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-rw-r--r--drivers/crypto/Kconfig63
-rw-r--r--drivers/i2c/algos/i2c-algo-bit.c226
-rw-r--r--drivers/i2c/algos/i2c-algo-pcf.c85
-rw-r--r--drivers/i2c/busses/Kconfig33
-rw-r--r--drivers/i2c/busses/Makefile1
-rw-r--r--drivers/i2c/busses/i2c-amd756.c5
-rw-r--r--drivers/i2c/busses/i2c-au1550.c177
-rw-r--r--drivers/i2c/busses/i2c-au1550.h32
-rw-r--r--drivers/i2c/busses/i2c-bfin-twi.c3
-rw-r--r--drivers/i2c/busses/i2c-davinci.c1
-rw-r--r--drivers/i2c/busses/i2c-i801.c163
-rw-r--r--drivers/i2c/busses/i2c-ibm_iic.c191
-rw-r--r--drivers/i2c/busses/i2c-ibm_iic.h8
-rw-r--r--drivers/i2c/busses/i2c-iop3xx.c1
-rw-r--r--drivers/i2c/busses/i2c-ixp4xx.c178
-rw-r--r--drivers/i2c/busses/i2c-mpc.c29
-rw-r--r--drivers/i2c/busses/i2c-nforce2.c1
-rw-r--r--drivers/i2c/busses/i2c-omap.c2
-rw-r--r--drivers/i2c/busses/i2c-pasemi.c3
-rw-r--r--drivers/i2c/busses/i2c-piix4.c41
-rw-r--r--drivers/i2c/busses/i2c-pxa.c189
-rw-r--r--drivers/i2c/busses/i2c-sibyte.c29
-rw-r--r--drivers/i2c/busses/i2c-stub.c15
-rw-r--r--drivers/i2c/busses/i2c-viapro.c11
-rw-r--r--drivers/i2c/chips/Kconfig58
-rw-r--r--drivers/i2c/chips/Makefile4
-rw-r--r--drivers/i2c/chips/ds1337.c410
-rw-r--r--drivers/i2c/chips/ds1374.c267
-rw-r--r--drivers/i2c/chips/eeprom.c2
-rw-r--r--drivers/i2c/chips/isp1301_omap.c2
-rw-r--r--drivers/i2c/chips/m41t00.c413
-rw-r--r--drivers/i2c/chips/max6875.c2
-rw-r--r--drivers/i2c/chips/pcf8574.c8
-rw-r--r--drivers/i2c/chips/pcf8575.c214
-rw-r--r--drivers/i2c/chips/pcf8591.c2
-rw-r--r--drivers/i2c/chips/tps65010.c2
-rw-r--r--drivers/i2c/chips/tsl2550.c21
-rw-r--r--drivers/i2c/i2c-core.c352
-rw-r--r--drivers/i2c/i2c-dev.c29
-rw-r--r--drivers/ide/Kconfig50
-rw-r--r--drivers/ide/Makefile58
-rw-r--r--drivers/ide/arm/Makefile4
-rw-r--r--drivers/ide/arm/bast-ide.c2
-rw-r--r--drivers/ide/arm/icside.c23
-rw-r--r--drivers/ide/arm/ide_arm.c17
-rw-r--r--drivers/ide/arm/rapide.c33
-rw-r--r--drivers/ide/cris/Makefile2
-rw-r--r--drivers/ide/cris/ide-cris.c29
-rw-r--r--drivers/ide/h8300/Makefile2
-rw-r--r--drivers/ide/h8300/ide-h8300.c27
-rw-r--r--drivers/ide/ide-acpi.c2
-rw-r--r--drivers/ide/ide-disk.c57
-rw-r--r--drivers/ide/ide-dma.c98
-rw-r--r--drivers/ide/ide-generic.c8
-rw-r--r--drivers/ide/ide-io.c116
-rw-r--r--drivers/ide/ide-iops.c31
-rw-r--r--drivers/ide/ide-lib.c25
-rw-r--r--drivers/ide/ide-pnp.c24
-rw-r--r--drivers/ide/ide-probe.c175
-rw-r--r--drivers/ide/ide-proc.c12
-rw-r--r--drivers/ide/ide-scan-pci.c121
-rw-r--r--drivers/ide/ide-tape.c5
-rw-r--r--drivers/ide/ide-taskfile.c155
-rw-r--r--drivers/ide/ide.c197
-rw-r--r--drivers/ide/legacy/Makefile19
-rw-r--r--drivers/ide/legacy/ali14xx.c5
-rw-r--r--drivers/ide/legacy/buddha.c44
-rw-r--r--drivers/ide/legacy/dtc2278.c5
-rw-r--r--drivers/ide/legacy/falconide.c22
-rw-r--r--drivers/ide/legacy/gayle.c43
-rw-r--r--drivers/ide/legacy/ht6560b.c5
-rw-r--r--drivers/ide/legacy/ide-cs.c2
-rw-r--r--drivers/ide/legacy/ide_platform.c55
-rw-r--r--drivers/ide/legacy/macide.c52
-rw-r--r--drivers/ide/legacy/q40ide.c24
-rw-r--r--drivers/ide/legacy/qd65xx.c5
-rw-r--r--drivers/ide/legacy/umc8672.c5
-rw-r--r--drivers/ide/mips/au1xxx-ide.c36
-rw-r--r--drivers/ide/mips/swarm.c1
-rw-r--r--drivers/ide/pci/Makefile4
-rw-r--r--drivers/ide/pci/atiixp.c71
-rw-r--r--drivers/ide/pci/cmd640.c16
-rw-r--r--drivers/ide/pci/cmd64x.c114
-rw-r--r--drivers/ide/pci/cs5520.c19
-rw-r--r--drivers/ide/pci/cy82c693.c64
-rw-r--r--drivers/ide/pci/delkin_cb.c2
-rw-r--r--drivers/ide/pci/hpt366.c11
-rw-r--r--drivers/ide/pci/it821x.c37
-rw-r--r--drivers/ide/pci/pdc202xx_new.c11
-rw-r--r--drivers/ide/pci/pdc202xx_old.c11
-rw-r--r--drivers/ide/pci/sc1200.c6
-rw-r--r--drivers/ide/pci/serverworks.c25
-rw-r--r--drivers/ide/pci/sgiioc4.c49
-rw-r--r--drivers/ide/pci/siimage.c15
-rw-r--r--drivers/ide/pci/sl82c105.c89
-rw-r--r--drivers/ide/pci/trm290.c9
-rw-r--r--drivers/ide/ppc/Makefile3
-rw-r--r--drivers/ide/ppc/mpc8xx.c18
-rw-r--r--drivers/ide/ppc/pmac.c46
-rw-r--r--drivers/ide/setup-pci.c151
-rw-r--r--drivers/macintosh/mediabay.c3
-rw-r--r--drivers/macintosh/therm_windtunnel.c5
-rw-r--r--drivers/media/video/dpc7146.c19
-rw-r--r--drivers/media/video/ks0127.c1
-rw-r--r--drivers/media/video/mxb.c40
-rw-r--r--drivers/media/video/vino.c22
-rw-r--r--drivers/mfd/ucb1x00-assabet.c14
-rw-r--r--drivers/mmc/host/omap.c2
-rw-r--r--drivers/net/Kconfig2
-rw-r--r--drivers/rtc/rtc-ds1672.c2
-rw-r--r--drivers/rtc/rtc-isl1208.c2
-rw-r--r--drivers/rtc/rtc-max6900.c2
-rw-r--r--drivers/rtc/rtc-pcf8563.c2
-rw-r--r--drivers/rtc/rtc-pcf8583.c2
-rw-r--r--drivers/rtc/rtc-x1205.c2
-rw-r--r--drivers/s390/block/Makefile4
-rw-r--r--drivers/s390/block/dasd.c1690
-rw-r--r--drivers/s390/block/dasd_3370_erp.c84
-rw-r--r--drivers/s390/block/dasd_3990_erp.c360
-rw-r--r--drivers/s390/block/dasd_9336_erp.c41
-rw-r--r--drivers/s390/block/dasd_9343_erp.c21
-rw-r--r--drivers/s390/block/dasd_alias.c903
-rw-r--r--drivers/s390/block/dasd_devmap.c94
-rw-r--r--drivers/s390/block/dasd_diag.c107
-rw-r--r--drivers/s390/block/dasd_eckd.c789
-rw-r--r--drivers/s390/block/dasd_eckd.h125
-rw-r--r--drivers/s390/block/dasd_eer.c11
-rw-r--r--drivers/s390/block/dasd_erp.c25
-rw-r--r--drivers/s390/block/dasd_fba.c119
-rw-r--r--drivers/s390/block/dasd_genhd.c76
-rw-r--r--drivers/s390/block/dasd_int.h209
-rw-r--r--drivers/s390/block/dasd_ioctl.c172
-rw-r--r--drivers/s390/block/dasd_proc.c23
-rw-r--r--drivers/s390/block/dcssblk.c2
-rw-r--r--drivers/s390/char/Makefile2
-rw-r--r--drivers/s390/char/monwriter.c2
-rw-r--r--drivers/s390/char/raw3270.c4
-rw-r--r--drivers/s390/char/sclp.h4
-rw-r--r--drivers/s390/char/sclp_chp.c200
-rw-r--r--drivers/s390/char/sclp_cmd.c398
-rw-r--r--drivers/s390/char/sclp_cpi.c246
-rw-r--r--drivers/s390/char/sclp_cpi_sys.c400
-rw-r--r--drivers/s390/char/sclp_cpi_sys.h15
-rw-r--r--drivers/s390/char/sclp_info.c116
-rw-r--r--drivers/s390/char/sclp_rw.c2
-rw-r--r--drivers/s390/char/tape_3590.c2
-rw-r--r--drivers/s390/char/tape_core.c2
-rw-r--r--drivers/s390/char/tape_proc.c2
-rw-r--r--drivers/s390/char/vmlogrdr.c2
-rw-r--r--drivers/s390/char/vmur.c2
-rw-r--r--drivers/s390/char/zcore.c2
-rw-r--r--drivers/s390/cio/airq.c171
-rw-r--r--drivers/s390/cio/airq.h10
-rw-r--r--drivers/s390/cio/blacklist.c2
-rw-r--r--drivers/s390/cio/ccwgroup.c25
-rw-r--r--drivers/s390/cio/chsc.c121
-rw-r--r--drivers/s390/cio/cio.c106
-rw-r--r--drivers/s390/cio/cio.h89
-rw-r--r--drivers/s390/cio/cio_debug.h22
-rw-r--r--drivers/s390/cio/css.c198
-rw-r--r--drivers/s390/cio/css.h78
-rw-r--r--drivers/s390/cio/device.c157
-rw-r--r--drivers/s390/cio/device.h5
-rw-r--r--drivers/s390/cio/device_fsm.c124
-rw-r--r--drivers/s390/cio/device_id.c9
-rw-r--r--drivers/s390/cio/device_ops.c2
-rw-r--r--drivers/s390/cio/device_pgid.c6
-rw-r--r--drivers/s390/cio/device_status.c13
-rw-r--r--drivers/s390/cio/io_sch.h163
-rw-r--r--drivers/s390/cio/ioasm.h66
-rw-r--r--drivers/s390/cio/qdio.c38
-rw-r--r--drivers/s390/cio/qdio.h2
-rw-r--r--drivers/s390/net/claw.c2
-rw-r--r--drivers/s390/net/lcs.c2
-rw-r--r--drivers/s390/net/netiucv.c3
-rw-r--r--drivers/s390/net/qeth_proc.c4
-rw-r--r--drivers/s390/net/smsgiucv.c2
-rw-r--r--drivers/s390/scsi/zfcp_erp.c2
-rw-r--r--drivers/s390/scsi/zfcp_fsf.c10
-rw-r--r--drivers/s390/scsi/zfcp_qdio.c2
-rw-r--r--drivers/serial/21285.c2
-rw-r--r--drivers/serial/bfin_5xx.c6
-rw-r--r--drivers/usb/gadget/Kconfig2
-rw-r--r--drivers/usb/host/ohci-omap.c2
-rw-r--r--drivers/usb/host/ohci-pnx4008.c5
-rw-r--r--drivers/video/Kconfig2
-rw-r--r--drivers/video/atmel_lcdfb.c2
-rw-r--r--drivers/video/bf54x-lq043fb.c6
-rw-r--r--drivers/video/matrox/matroxfb_maven.c2
-rw-r--r--drivers/video/omap/lcd_h3.c2
-rw-r--r--drivers/w1/masters/ds2482.c2
191 files changed, 7100 insertions, 6383 deletions
diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index 8a70a9edabd..6b658d84d52 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -48,8 +48,6 @@ config CRYPTO_DEV_PADLOCK_SHA
If unsure say M. The compiled module will be
called padlock-sha.ko
-source "arch/s390/crypto/Kconfig"
-
config CRYPTO_DEV_GEODE
tristate "Support for the Geode LX AES engine"
depends on X86_32 && PCI
@@ -83,6 +81,67 @@ config ZCRYPT_MONOLITHIC
that contains all parts of the crypto device driver (ap bus,
request router and all the card drivers).
+config CRYPTO_SHA1_S390
+ tristate "SHA1 digest algorithm"
+ depends on S390
+ select CRYPTO_ALGAPI
+ help
+ This is the s390 hardware accelerated implementation of the
+ SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
+
+config CRYPTO_SHA256_S390
+ tristate "SHA256 digest algorithm"
+ depends on S390
+ select CRYPTO_ALGAPI
+ help
+ This is the s390 hardware accelerated implementation of the
+ SHA256 secure hash standard (DFIPS 180-2).
+
+ This version of SHA implements a 256 bit hash with 128 bits of
+ security against collision attacks.
+
+config CRYPTO_DES_S390
+ tristate "DES and Triple DES cipher algorithms"
+ depends on S390
+ select CRYPTO_ALGAPI
+ select CRYPTO_BLKCIPHER
+ help
+ This us the s390 hardware accelerated implementation of the
+ DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
+
+config CRYPTO_AES_S390
+ tristate "AES cipher algorithms"
+ depends on S390
+ select CRYPTO_ALGAPI
+ select CRYPTO_BLKCIPHER
+ help
+ This is the s390 hardware accelerated implementation of the
+ AES cipher algorithms (FIPS-197). AES uses the Rijndael
+ algorithm.
+
+ Rijndael appears to be consistently a very good performer in
+ both hardware and software across a wide range of computing
+ environments regardless of its use in feedback or non-feedback
+ modes. Its key setup time is excellent, and its key agility is
+ good. Rijndael's very low memory requirements make it very well
+ suited for restricted-space environments, in which it also
+ demonstrates excellent performance. Rijndael's operations are
+ among the easiest to defend against power and timing attacks.
+
+ On s390 the System z9-109 currently only supports the key size
+ of 128 bit.
+
+config S390_PRNG
+ tristate "Pseudo random number generator device driver"
+ depends on S390
+ default "m"
+ help
+ Select this option if you want to use the s390 pseudo random number
+ generator. The PRNG is part of the cryptographic processor functions
+ and uses triple-DES to generate secure random numbers like the
+ ANSI X9.17 standard. The PRNG is usable via the char device
+ /dev/prandom.
+
config CRYPTO_DEV_HIFN_795X
tristate "Driver HIFN 795x crypto accelerator chips"
select CRYPTO_DES
diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c
index a37cb6b8593..35812823787 100644
--- a/drivers/i2c/algos/i2c-algo-bit.c
+++ b/drivers/i2c/algos/i2c-algo-bit.c
@@ -1,7 +1,7 @@
-/* ------------------------------------------------------------------------- */
-/* i2c-algo-bit.c i2c driver algorithms for bit-shift adapters */
-/* ------------------------------------------------------------------------- */
-/* Copyright (C) 1995-2000 Simon G. Vogl
+/* -------------------------------------------------------------------------
+ * i2c-algo-bit.c i2c driver algorithms for bit-shift adapters
+ * -------------------------------------------------------------------------
+ * Copyright (C) 1995-2000 Simon G. Vogl
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -15,8 +15,8 @@
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-/* ------------------------------------------------------------------------- */
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * ------------------------------------------------------------------------- */
/* With some changes from Frodo Looijaard <frodol@dds.nl>, Kyösti Mälkki
<kmalkki@cc.hut.fi> and Jean Delvare <khali@linux-fr.org> */
@@ -60,26 +60,26 @@ MODULE_PARM_DESC(i2c_debug,
/* --- setting states on the bus with the right timing: --------------- */
-#define setsda(adap,val) adap->setsda(adap->data, val)
-#define setscl(adap,val) adap->setscl(adap->data, val)
-#define getsda(adap) adap->getsda(adap->data)
-#define getscl(adap) adap->getscl(adap->data)
+#define setsda(adap, val) adap->setsda(adap->data, val)
+#define setscl(adap, val) adap->setscl(adap->data, val)
+#define getsda(adap) adap->getsda(adap->data)
+#define getscl(adap) adap->getscl(adap->data)
static inline void sdalo(struct i2c_algo_bit_data *adap)
{
- setsda(adap,0);
+ setsda(adap, 0);
udelay((adap->udelay + 1) / 2);
}
static inline void sdahi(struct i2c_algo_bit_data *adap)
{
- setsda(adap,1);
+ setsda(adap, 1);
udelay((adap->udelay + 1) / 2);
}
static inline void scllo(struct i2c_algo_bit_data *adap)
{
- setscl(adap,0);
+ setscl(adap, 0);
udelay(adap->udelay / 2);
}
@@ -91,22 +91,21 @@ static int sclhi(struct i2c_algo_bit_data *adap)
{
unsigned long start;
- setscl(adap,1);
+ setscl(adap, 1);
/* Not all adapters have scl sense line... */
if (!adap->getscl)
goto done;
- start=jiffies;
- while (! getscl(adap) ) {
- /* the hw knows how to read the clock line,
- * so we wait until it actually gets high.
- * This is safer as some chips may hold it low
- * while they are processing data internally.
- */
- if (time_after_eq(jiffies, start+adap->timeout)) {
+ start = jiffies;
+ while (!getscl(adap)) {
+ /* This hw knows how to read the clock line, so we wait
+ * until it actually gets high. This is safer as some
+ * chips may hold it low ("clock stretching") while they
+ * are processing data internally.
+ */
+ if (time_after_eq(jiffies, start + adap->timeout))
return -ETIMEDOUT;
- }
cond_resched();
}
#ifdef DEBUG
@@ -118,11 +117,11 @@ static int sclhi(struct i2c_algo_bit_data *adap)
done:
udelay(adap->udelay);
return 0;
-}
+}
/* --- other auxiliary functions -------------------------------------- */
-static void i2c_start(struct i2c_algo_bit_data *adap)
+static void i2c_start(struct i2c_algo_bit_data *adap)
{
/* assert: scl, sda are high */
setsda(adap, 0);
@@ -130,7 +129,7 @@ static void i2c_start(struct i2c_algo_bit_data *adap)
scllo(adap);
}
-static void i2c_repstart(struct i2c_algo_bit_data *adap)
+static void i2c_repstart(struct i2c_algo_bit_data *adap)
{
/* assert: scl is low */
sdahi(adap);
@@ -141,18 +140,18 @@ static void i2c_repstart(struct i2c_algo_bit_data *adap)
}
-static void i2c_stop(struct i2c_algo_bit_data *adap)
+static void i2c_stop(struct i2c_algo_bit_data *adap)
{
/* assert: scl is low */
sdalo(adap);
- sclhi(adap);
+ sclhi(adap);
setsda(adap, 1);
udelay(adap->udelay);
}
-/* send a byte without start cond., look for arbitration,
+/* send a byte without start cond., look for arbitration,
check ackn. from slave */
/* returns:
* 1 if the device acknowledged
@@ -167,27 +166,33 @@ static int i2c_outb(struct i2c_adapter *i2c_adap, unsigned char c)
struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
/* assert: scl is low */
- for ( i=7 ; i>=0 ; i-- ) {
+ for (i = 7; i >= 0; i--) {
sb = (c >> i) & 1;
- setsda(adap,sb);
+ setsda(adap, sb);
udelay((adap->udelay + 1) / 2);
- if (sclhi(adap)<0) { /* timed out */
+ if (sclhi(adap) < 0) { /* timed out */
bit_dbg(1, &i2c_adap->dev, "i2c_outb: 0x%02x, "
"timeout at bit #%d\n", (int)c, i);
return -ETIMEDOUT;
- };
- /* do arbitration here:
- * if ( sb && ! getsda(adap) ) -> ouch! Get out of here.
+ }
+ /* FIXME do arbitration here:
+ * if (sb && !getsda(adap)) -> ouch! Get out of here.
+ *
+ * Report a unique code, so higher level code can retry
+ * the whole (combined) message and *NOT* issue STOP.
*/
scllo(adap);
}
sdahi(adap);
- if (sclhi(adap)<0){ /* timeout */
+ if (sclhi(adap) < 0) { /* timeout */
bit_dbg(1, &i2c_adap->dev, "i2c_outb: 0x%02x, "
"timeout at ack\n", (int)c);
return -ETIMEDOUT;
- };
- /* read ack: SDA should be pulled down by slave */
+ }
+
+ /* read ack: SDA should be pulled down by slave, or it may
+ * NAK (usually to report problems with the data we wrote).
+ */
ack = !getsda(adap); /* ack: sda is pulled low -> success */
bit_dbg(2, &i2c_adap->dev, "i2c_outb: 0x%02x %s\n", (int)c,
ack ? "A" : "NA");
@@ -198,24 +203,24 @@ static int i2c_outb(struct i2c_adapter *i2c_adap, unsigned char c)
}
-static int i2c_inb(struct i2c_adapter *i2c_adap)
+static int i2c_inb(struct i2c_adapter *i2c_adap)
{
/* read byte via i2c port, without start/stop sequence */
/* acknowledge is sent in i2c_read. */
int i;
- unsigned char indata=0;
+ unsigned char indata = 0;
struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
/* assert: scl is low */
sdahi(adap);
- for (i=0;i<8;i++) {
- if (sclhi(adap)<0) { /* timeout */
+ for (i = 0; i < 8; i++) {
+ if (sclhi(adap) < 0) { /* timeout */
bit_dbg(1, &i2c_adap->dev, "i2c_inb: timeout at bit "
"#%d\n", 7 - i);
return -ETIMEDOUT;
- };
+ }
indata *= 2;
- if ( getsda(adap) )
+ if (getsda(adap))
indata |= 0x01;
setscl(adap, 0);
udelay(i == 7 ? adap->udelay / 2 : adap->udelay);
@@ -228,66 +233,67 @@ static int i2c_inb(struct i2c_adapter *i2c_adap)
* Sanity check for the adapter hardware - check the reaction of
* the bus lines only if it seems to be idle.
*/
-static int test_bus(struct i2c_algo_bit_data *adap, char* name) {
- int scl,sda;
+static int test_bus(struct i2c_algo_bit_data *adap, char *name)
+{
+ int scl, sda;
- if (adap->getscl==NULL)
+ if (adap->getscl == NULL)
pr_info("%s: Testing SDA only, SCL is not readable\n", name);
- sda=getsda(adap);
- scl=(adap->getscl==NULL?1:getscl(adap));
- if (!scl || !sda ) {
+ sda = getsda(adap);
+ scl = (adap->getscl == NULL) ? 1 : getscl(adap);
+ if (!scl || !sda) {
printk(KERN_WARNING "%s: bus seems to be busy\n", name);
goto bailout;
}
sdalo(adap);
- sda=getsda(adap);
- scl=(adap->getscl==NULL?1:getscl(adap));
- if ( 0 != sda ) {
+ sda = getsda(adap);
+ scl = (adap->getscl == NULL) ? 1 : getscl(adap);
+ if (sda) {
printk(KERN_WARNING "%s: SDA stuck high!\n", name);
goto bailout;
}
- if ( 0 == scl ) {
+ if (!scl) {
printk(KERN_WARNING "%s: SCL unexpected low "
"while pulling SDA low!\n", name);
goto bailout;
- }
+ }
sdahi(adap);
- sda=getsda(adap);
- scl=(adap->getscl==NULL?1:getscl(adap));
- if ( 0 == sda ) {
+ sda = getsda(adap);
+ scl = (adap->getscl == NULL) ? 1 : getscl(adap);
+ if (!sda) {
printk(KERN_WARNING "%s: SDA stuck low!\n", name);
goto bailout;
}
- if ( 0 == scl ) {
+ if (!scl) {
printk(KERN_WARNING "%s: SCL unexpected low "
"while pulling SDA high!\n", name);
goto bailout;
}
scllo(adap);
- sda=getsda(adap);
- scl=(adap->getscl==NULL?0:getscl(adap));
- if ( 0 != scl ) {
+ sda = getsda(adap);
+ scl = (adap->getscl == NULL) ? 0 : getscl(adap);
+ if (scl) {
printk(KERN_WARNING "%s: SCL stuck high!\n", name);
goto bailout;
}
- if ( 0 == sda ) {
+ if (!sda) {
printk(KERN_WARNING "%s: SDA unexpected low "
"while pulling SCL low!\n", name);
goto bailout;
}
-
+
sclhi(adap);
- sda=getsda(adap);
- scl=(adap->getscl==NULL?1:getscl(adap));
- if ( 0 == scl ) {
+ sda = getsda(adap);
+ scl = (adap->getscl == NULL) ? 1 : getscl(adap);
+ if (!scl) {
printk(KERN_WARNING "%s: SCL stuck low!\n", name);
goto bailout;
}
- if ( 0 == sda ) {
+ if (!sda) {
printk(KERN_WARNING "%s: SDA unexpected low "
"while pulling SCL high!\n", name);
goto bailout;
@@ -314,9 +320,10 @@ static int try_address(struct i2c_adapter *i2c_adap,
unsigned char addr, int retries)
{
struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
- int i,ret = -1;
- for (i=0;i<=retries;i++) {
- ret = i2c_outb(i2c_adap,addr);
+ int i, ret = -1;
+
+ for (i = 0; i <= retries; i++) {
+ ret = i2c_outb(i2c_adap, addr);
if (ret == 1 || i == retries)
break;
bit_dbg(3, &i2c_adap->dev, "emitting stop condition\n");
@@ -338,20 +345,38 @@ static int sendbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
{
const unsigned char *temp = msg->buf;
int count = msg->len;
- unsigned short nak_ok = msg->flags & I2C_M_IGNORE_NAK;
+ unsigned short nak_ok = msg->flags & I2C_M_IGNORE_NAK;
int retval;
- int wrcount=0;
+ int wrcount = 0;
while (count > 0) {
retval = i2c_outb(i2c_adap, *temp);
- if ((retval>0) || (nak_ok && (retval==0))) { /* ok or ignored NAK */
- count--;
+
+ /* OK/ACK; or ignored NAK */
+ if ((retval > 0) || (nak_ok && (retval == 0))) {
+ count--;
temp++;
wrcount++;
- } else { /* arbitration or no acknowledge */
- dev_err(&i2c_adap->dev, "sendbytes: error - bailout.\n");
- return (retval<0)? retval : -EFAULT;
- /* got a better one ?? */
+
+ /* A slave NAKing the master means the slave didn't like
+ * something about the data it saw. For example, maybe
+ * the SMBus PEC was wrong.
+ */
+ } else if (retval == 0) {
+ dev_err(&i2c_adap->dev, "sendbytes: NAK bailout.\n");
+ return -EIO;
+
+ /* Timeout; or (someday) lost arbitration
+ *
+ * FIXME Lost ARB implies retrying the transaction from
+ * the first message, after the "winning" master issues
+ * its STOP. As a rule, upper layer code has no reason
+ * to know or care about this ... it is *NOT* an error.
+ */
+ } else {
+ dev_err(&i2c_adap->dev, "sendbytes: error %d\n",
+ retval);
+ return retval;
}
}
return wrcount;
@@ -376,14 +401,14 @@ static int acknak(struct i2c_adapter *i2c_adap, int is_ack)
static int readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
{
int inval;
- int rdcount=0; /* counts bytes read */
+ int rdcount = 0; /* counts bytes read */
unsigned char *temp = msg->buf;
int count = msg->len;
const unsigned flags = msg->flags;
while (count > 0) {
inval = i2c_inb(i2c_adap);
- if (inval>=0) {
+ if (inval >= 0) {
*temp = inval;
rdcount++;
} else { /* read timed out */
@@ -431,7 +456,7 @@ static int readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
* returns:
* 0 everything went okay, the chip ack'ed, or IGNORE_NAK flag was set
* -x an error occurred (like: -EREMOTEIO if the device did not answer, or
- * -ETIMEDOUT, for example if the lines are stuck...)
+ * -ETIMEDOUT, for example if the lines are stuck...)
*/
static int bit_doAddress(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
{
@@ -443,10 +468,10 @@ static int bit_doAddress(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
int ret, retries;
retries = nak_ok ? 0 : i2c_adap->retries;
-
- if ( (flags & I2C_M_TEN) ) {
+
+ if (flags & I2C_M_TEN) {
/* a ten bit address */
- addr = 0xf0 | (( msg->addr >> 7) & 0x03);
+ addr = 0xf0 | ((msg->addr >> 7) & 0x03);
bit_dbg(2, &i2c_adap->dev, "addr0: %d\n", addr);
/* try extended address code...*/
ret = try_address(i2c_adap, addr, retries);
@@ -456,33 +481,33 @@ static int bit_doAddress(struct i2c_adapter *i2c_adap, struct i2c_msg *msg)
return -EREMOTEIO;
}
/* the remaining 8 bit address */
- ret = i2c_outb(i2c_adap,msg->addr & 0x7f);
+ ret = i2c_outb(i2c_adap, msg->addr & 0x7f);
if ((ret != 1) && !nak_ok) {
/* the chip did not ack / xmission error occurred */
dev_err(&i2c_adap->dev, "died at 2nd address code\n");
return -EREMOTEIO;
}
- if ( flags & I2C_M_RD ) {
+ if (flags & I2C_M_RD) {
bit_dbg(3, &i2c_adap->dev, "emitting repeated "
"start condition\n");
i2c_repstart(adap);
/* okay, now switch into reading mode */
addr |= 0x01;
ret = try_address(i2c_adap, addr, retries);
- if ((ret!=1) && !nak_ok) {
+ if ((ret != 1) && !nak_ok) {
dev_err(&i2c_adap->dev,
"died at repeated address code\n");
return -EREMOTEIO;
}
}
} else { /* normal 7bit address */
- addr = ( msg->addr << 1 );
- if (flags & I2C_M_RD )
+ addr = msg->addr << 1;
+ if (flags & I2C_M_RD)
addr |= 1;
- if (flags & I2C_M_REV_DIR_ADDR )
+ if (flags & I2C_M_REV_DIR_ADDR)
addr ^= 1;
ret = try_address(i2c_adap, addr, retries);
- if ((ret!=1) && !nak_ok)
+ if ((ret != 1) && !nak_ok)
return -EREMOTEIO;
}
@@ -494,15 +519,14 @@ static int bit_xfer(struct i2c_adapter *i2c_adap,
{
struct i2c_msg *pmsg;
struct i2c_algo_bit_data *adap = i2c_adap->algo_data;
-
- int i,ret;
+ int i, ret;
unsigned short nak_ok;
bit_dbg(3, &i2c_adap->dev, "emitting start condition\n");
i2c_start(adap);
- for (i=0;i<num;i++) {
+ for (i = 0; i < num; i++) {
pmsg = &msgs[i];
- nak_ok = pmsg->flags & I2C_M_IGNORE_NAK;
+ nak_ok = pmsg->flags & I2C_M_IGNORE_NAK;
if (!(pmsg->flags & I2C_M_NOSTART)) {
if (i) {
bit_dbg(3, &i2c_adap->dev, "emitting "
@@ -517,7 +541,7 @@ static int bit_xfer(struct i2c_adapter *i2c_adap,
goto bailout;
}
}
- if (pmsg->flags & I2C_M_RD ) {
+ if (pmsg->flags & I2C_M_RD) {
/* read bytes into buffer*/
ret = readbytes(i2c_adap, pmsg);
if (ret >= 1)
@@ -551,7 +575,7 @@ bailout:
static u32 bit_func(struct i2c_adapter *adap)
{
- return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL |
+ return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL |
I2C_FUNC_SMBUS_READ_BLOCK_DATA |
I2C_FUNC_SMBUS_BLOCK_PROC_CALL |
I2C_FUNC_10BIT_ADDR | I2C_FUNC_PROTOCOL_MANGLING;
@@ -565,8 +589,8 @@ static const struct i2c_algorithm i2c_bit_algo = {
.functionality = bit_func,
};
-/*
- * registering functions to load algorithms at runtime
+/*
+ * registering functions to load algorithms at runtime
*/
static int i2c_bit_prepare_bus(struct i2c_adapter *adap)
{
@@ -574,7 +598,7 @@ static int i2c_bit_prepare_bus(struct i2c_adapter *adap)
if (bit_test) {
int ret = test_bus(bit_adap, adap->name);
- if (ret<0)
+ if (ret < 0)
return -ENODEV;
}
diff --git a/drivers/i2c/algos/i2c-algo-pcf.c b/drivers/i2c/algos/i2c-algo-pcf.c
index ab2e6f3498b..8907b019167 100644
--- a/drivers/i2c/algos/i2c-algo-pcf.c
+++ b/drivers/i2c/algos/i2c-algo-pcf.c
@@ -203,35 +203,6 @@ static int pcf_init_8584 (struct i2c_algo_pcf_data *adap)
/* ----- Utility functions
*/
-static inline int try_address(struct i2c_algo_pcf_data *adap,
- unsigned char addr, int retries)
-{
- int i, status, ret = -1;
- int wfp;
- for (i=0;i<retries;i++) {
- i2c_outb(adap, addr);
- i2c_start(adap);
- status = get_pcf(adap, 1);
- if ((wfp = wait_for_pin(adap, &status)) >= 0) {
- if ((status & I2C_PCF_LRB) == 0) {
- i2c_stop(adap);
- break; /* success! */
- }
- }
- if (wfp == -EINTR) {
- /* arbitration lost */
- udelay(adap->udelay);
- return -EINTR;
- }
- i2c_stop(adap);
- udelay(adap->udelay);
- }
- DEB2(if (i) printk(KERN_DEBUG "i2c-algo-pcf.o: needed %d retries for %d\n",i,
- addr));
- return ret;
-}
-
-
static int pcf_sendbytes(struct i2c_adapter *i2c_adap, const char *buf,
int count, int last)
{
@@ -321,47 +292,19 @@ static int pcf_readbytes(struct i2c_adapter *i2c_adap, char *buf,
}
-static inline int pcf_doAddress(struct i2c_algo_pcf_data *adap,
- struct i2c_msg *msg, int retries)
+static int pcf_doAddress(struct i2c_algo_pcf_data *adap,
+ struct i2c_msg *msg)
{
unsigned short flags = msg->flags;
unsigned char addr;
- int ret;
- if ( (flags & I2C_M_TEN) ) {
- /* a ten bit address */
- addr = 0xf0 | (( msg->addr >> 7) & 0x03);
- DEB2(printk(KERN_DEBUG "addr0: %d\n",addr));
- /* try extended address code...*/
- ret = try_address(adap, addr, retries);
- if (ret!=1) {
- printk(KERN_ERR "died at extended address code.\n");
- return -EREMOTEIO;
- }
- /* the remaining 8 bit address */
- i2c_outb(adap,msg->addr & 0x7f);
-/* Status check comes here */
- if (ret != 1) {
- printk(KERN_ERR "died at 2nd address code.\n");
- return -EREMOTEIO;
- }
- if ( flags & I2C_M_RD ) {
- i2c_repstart(adap);
- /* okay, now switch into reading mode */
- addr |= 0x01;
- ret = try_address(adap, addr, retries);
- if (ret!=1) {
- printk(KERN_ERR "died at extended address code.\n");
- return -EREMOTEIO;
- }
- }
- } else { /* normal 7bit address */
- addr = ( msg->addr << 1 );
- if (flags & I2C_M_RD )
- addr |= 1;
- if (flags & I2C_M_REV_DIR_ADDR )
- addr ^= 1;
- i2c_outb(adap, addr);
- }
+
+ addr = msg->addr << 1;
+ if (flags & I2C_M_RD)
+ addr |= 1;
+ if (flags & I2C_M_REV_DIR_ADDR)
+ addr ^= 1;
+ i2c_outb(adap, addr);
+
return 0;
}
@@ -390,7 +333,7 @@ static int pcf_xfer(struct i2c_adapter *i2c_adap,
pmsg->flags & I2C_M_RD ? "read" : "write",
pmsg->len, pmsg->addr, i + 1, num);)
- ret = pcf_doAddress(adap, pmsg, i2c_adap->retries);
+ ret = pcf_doAddress(adap, pmsg);
/* Send START */
if (i == 0) {
@@ -453,7 +396,7 @@ static int pcf_xfer(struct i2c_adapter *i2c_adap,
static u32 pcf_func(struct i2c_adapter *adap)
{
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL |
- I2C_FUNC_10BIT_ADDR | I2C_FUNC_PROTOCOL_MANGLING;
+ I2C_FUNC_PROTOCOL_MANGLING;
}
/* -----exported algorithm data: ------------------------------------- */
@@ -475,9 +418,7 @@ int i2c_pcf_add_bus(struct i2c_adapter *adap)
/* register new adapter to i2c module... */
adap->algo = &pcf_algo;
-
- adap->timeout = 100; /* default values, should */
- adap->retries = 3; /* be replaced by defines */
+ adap->timeout = 100;
if ((rval = pcf_init_8584(pcf_adap)))
return rval;
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index b148bf0ec6b..b61f56b6f31 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -182,7 +182,8 @@ config I2C_I801
will be called i2c-i801.
config I2C_I810
- tristate "Intel 810/815"
+ tristate "Intel 810/815 (DEPRECATED)"
+ default n
depends on PCI
select I2C_ALGOBIT
help
@@ -195,6 +196,8 @@ config I2C_I810
i815
i845G
+ This driver is deprecated in favor of the i810fb and intelfb drivers.
+
This driver can also be built as a module. If so, the module
will be called i2c-i810.
@@ -259,20 +262,6 @@ config I2C_IOP3XX
This driver can also be built as a module. If so, the module
will be called i2c-iop3xx.
-config I2C_IXP4XX
- tristate "IXP4xx GPIO-Based I2C Interface (DEPRECATED)"
- depends on ARCH_IXP4XX
- select I2C_ALGOBIT
- help
- Say Y here if you have an Intel IXP4xx(420,421,422,425) based
- system and are using GPIO lines for an I2C bus.
-
- This support is also available as a module. If so, the module
- will be called i2c-ixp4xx.
-
- This driver is deprecated and will be dropped soon. Use i2c-gpio
- instead.
-
config I2C_IXP2000
tristate "IXP2000 GPIO-Based I2C Interface (DEPRECATED)"
depends on ARCH_IXP2000
@@ -396,7 +385,8 @@ config I2C_PASEMI
Supports the PA Semi PWRficient on-chip SMBus interfaces.
config I2C_PROSAVAGE
- tristate "S3/VIA (Pro)Savage"
+ tristate "S3/VIA (Pro)Savage (DEPRECATED)"
+ default n
depends on PCI
select I2C_ALGOBIT
help
@@ -407,6 +397,8 @@ config I2C_PROSAVAGE
S3/VIA KM266/VT8375 aka ProSavage8
S3/VIA KM133/VT8365 aka Savage4
+ This driver is deprecated in favor of the savagefb driver.
+
This support is also available as a module. If so, the module
will be called i2c-prosavage.
@@ -418,13 +410,16 @@ config I2C_S3C2410
Samsung S3C2410 based System-on-Chip devices.
config I2C_SAVAGE4
- tristate "S3 Savage 4"
- depends on PCI && EXPERIMENTAL
+ tristate "S3 Savage 4 (DEPRECATED)"
+ default n
+ depends on PCI
select I2C_ALGOBIT
help
If you say yes to this option, support will be included for the
S3 Savage 4 I2C interface.
+ This driver is deprecated in favor of the savagefb driver.
+
This driver can also be built as a module. If so, the module
will be called i2c-savage4.
@@ -611,7 +606,7 @@ config I2C_VIAPRO
VT8231
VT8233/A
VT8235
- VT8237R/A
+ VT8237R/A/S
VT8251
CX700
diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
index 81d43c27cf9..ea7068f1eb6 100644
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@@ -20,7 +20,6 @@ obj-$(CONFIG_I2C_I810) += i2c-i810.o
obj-$(CONFIG_I2C_IBM_IIC) += i2c-ibm_iic.o
obj-$(CONFIG_I2C_IOP3XX) += i2c-iop3xx.o
obj-$(CONFIG_I2C_IXP2000) += i2c-ixp2000.o
-obj-$(CONFIG_I2C_IXP4XX) += i2c-ixp4xx.o
obj-$(CONFIG_I2C_POWERMAC) += i2c-powermac.o
obj-$(CONFIG_I2C_MPC) += i2c-mpc.o
obj-$(CONFIG_I2C_MV64XXX) += i2c-mv64xxx.o
diff --git a/drivers/i2c/busses/i2c-amd756.c b/drivers/i2c/busses/i2c-amd756.c
index 7490dc1771a..573abe44084 100644
--- a/drivers/i2c/busses/i2c-amd756.c
+++ b/drivers/i2c/busses/i2c-amd756.c
@@ -334,6 +334,10 @@ static int __devinit amd756_probe(struct pci_dev *pdev,
int error;
u8 temp;
+ /* driver_data might come from user-space, so check it */
+ if (id->driver_data > ARRAY_SIZE(chipname))
+ return -EINVAL;
+
if (amd756_ioport) {
dev_err(&pdev->dev, "Only one device supported "
"(you have a strange motherboard, btw)\n");
@@ -405,6 +409,7 @@ static struct pci_driver amd756_driver = {
.id_table = amd756_ids,
.probe = amd756_probe,
.remove = __devexit_p(amd756_remove),
+ .dynids.use_driver_data = 1,
};
static int __init amd756_init(void)
diff --git a/drivers/i2c/busses/i2c-au1550.c b/drivers/i2c/busses/i2c-au1550.c
index 2f684166c43..1953b26da56 100644
--- a/drivers/i2c/busses/i2c-au1550.c
+++ b/drivers/i2c/busses/i2c-au1550.c
@@ -30,14 +30,22 @@
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/i2c.h>
+#include <linux/slab.h>
#include <asm/mach-au1x00/au1xxx.h>
#include <asm/mach-au1x00/au1xxx_psc.h>
-#include "i2c-au1550.h"
+struct i2c_au1550_data {
+ u32 psc_base;
+ int xfer_timeout;
+ int ack_timeout;
+ struct i2c_adapter adap;
+ struct resource *ioarea;
+};
static int
wait_xfer_done(struct i2c_au1550_data *adap)
@@ -105,7 +113,7 @@ wait_master_done(struct i2c_au1550_data *adap)
}
static int
-do_address(struct i2c_au1550_data *adap, unsigned int addr, int rd)
+do_address(struct i2c_au1550_data *adap, unsigned int addr, int rd, int q)
{
volatile psc_smb_t *sp;
u32 stat;
@@ -134,6 +142,10 @@ do_address(struct i2c_au1550_data *adap, unsigned int addr, int rd)
if (rd)
addr |= 1;
+ /* zero-byte xfers stop immediately */
+ if (q)
+ addr |= PSC_SMBTXRX_STP;
+
/* Put byte into fifo, start up master.
*/
sp->psc_smbtxrx = addr;
@@ -142,7 +154,7 @@ do_address(struct i2c_au1550_data *adap, unsigned int addr, int rd)
au_sync();
if (wait_ack(adap))
return -EIO;
- return 0;
+ return (q) ? wait_master_done(adap) : 0;
}
static u32
@@ -262,7 +274,8 @@ au1550_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num)
for (i = 0; !err && i < num; i++) {
p = &msgs[i];
- err = do_address(adap, p->addr, p->flags & I2C_M_RD);
+ err = do_address(adap, p->addr, p->flags & I2C_M_RD,
+ (p->len == 0));
if (err || !p->len)
continue;
if (p->flags & I2C_M_RD)
@@ -294,18 +307,48 @@ static const struct i2c_algorithm au1550_algo = {
* Prior to calling us, the 50MHz clock frequency and routing
* must have been set up for the PSC indicated by the adapter.
*/
-int
-i2c_au1550_add_bus(struct i2c_adapter *i2c_adap)
+static int __devinit
+i2c_au1550_probe(struct platform_device *pdev)
{
- struct i2c_au1550_data *adap = i2c_adap->algo_data;
- volatile psc_smb_t *sp;
- u32 stat;
+ struct i2c_au1550_data *priv;
+ volatile psc_smb_t *sp;
+ struct resource *r;
+ u32 stat;
+ int ret;
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!r) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ priv = kzalloc(sizeof(struct i2c_au1550_data), GFP_KERNEL);
+ if (!priv) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ priv->ioarea = request_mem_region(r->start, r->end - r->start + 1,
+ pdev->name);
+ if (!priv->ioarea) {
+ ret = -EBUSY;
+ goto out_mem;
+ }
- i2c_adap->algo = &au1550_algo;
+ priv->psc_base = r->start;
+ priv->xfer_timeout = 200;
+ priv->ack_timeout = 200;
+
+ priv->adap.id = I2C_HW_AU1550_PSC;
+ priv->adap.nr = pdev->id;
+ priv->adap.algo = &au1550_algo;
+ priv->adap.algo_data = priv;
+ priv->adap.dev.parent = &pdev->dev;
+ strlcpy(priv->adap.name, "Au1xxx PSC I2C", sizeof(priv->adap.name));
/* Now, set up the PSC for SMBus PIO mode.
*/
- sp = (volatile psc_smb_t *)(adap->psc_base);
+ sp = (volatile psc_smb_t *)priv->psc_base;
sp->psc_ctrl = PSC_CTRL_DISABLE;
au_sync();
sp->psc_sel = PSC_SEL_PS_SMBUSMODE;
@@ -343,87 +386,87 @@ i2c_au1550_add_bus(struct i2c_adapter *i2c_adap)
au_sync();
} while ((stat & PSC_SMBSTAT_DR) == 0);
- return i2c_add_adapter(i2c_adap);
-}
+ ret = i2c_add_numbered_adapter(&priv->adap);
+ if (ret == 0) {
+ platform_set_drvdata(pdev, priv);
+ return 0;
+ }
+ /* disable the PSC */
+ sp->psc_smbcfg = 0;
+ sp->psc_ctrl = PSC_CTRL_DISABLE;
+ au_sync();
-int
-i2c_au1550_del_bus(struct i2c_adapter *adap)
+ release_resource(priv->ioarea);
+ kfree(priv->ioarea);
+out_mem:
+ kfree(priv);
+out:
+ return ret;
+}
+
+static int __devexit
+i2c_au1550_remove(struct platform_device *pdev)
{
- return i2c_del_adapter(adap);
+ struct i2c_au1550_data *priv = platform_get_drvdata(pdev);
+ volatile psc_smb_t *sp = (volatile psc_smb_t *)priv->psc_base;
+
+ platform_set_drvdata(pdev, NULL);
+ i2c_del_adapter(&priv->adap);
+ sp->psc_smbcfg = 0;
+ sp->psc_ctrl = PSC_CTRL_DISABLE;
+ au_sync();
+ release_resource(priv->ioarea);
+ kfree(priv->ioarea);
+ kfree(priv);
+ return 0;
}
static int
-pb1550_reg(struct i2c_client *client)
+i2c_au1550_suspend(struct platform_device *pdev, pm_message_t state)
{
+ struct i2c_au1550_data *priv = platform_get_drvdata(pdev);
+ volatile psc_smb_t *sp = (volatile psc_smb_t *)priv->psc_base;
+
+ sp->psc_ctrl = PSC_CTRL_SUSPEND;
+ au_sync();
return 0;
}
static int
-pb1550_unreg(struct i2c_client *client)
+i2c_au1550_resume(struct platform_device *pdev)
{
+ struct i2c_au1550_data *priv = platform_get_drvdata(pdev);
+ volatile psc_smb_t *sp = (volatile psc_smb_t *)priv->psc_base;
+
+ sp->psc_ctrl = PSC_CTRL_ENABLE;
+ au_sync();
+ while (!(sp->psc_smbstat & PSC_SMBSTAT_SR))
+ au_sync();
return 0;
}
-static struct i2c_au1550_data pb1550_i2c_info = {
- SMBUS_PSC_BASE, 200, 200
-};
-
-static struct i2c_adapter pb1550_board_adapter = {
- name: "pb1550 adapter",
- id: I2C_HW_AU1550_PSC,
- algo: NULL,
- algo_data: &pb1550_i2c_info,
- client_register: pb1550_reg,
- client_unregister: pb1550_unreg,
+static struct platform_driver au1xpsc_smbus_driver = {
+ .driver = {
+ .name = "au1xpsc_smbus",
+ .owner = THIS_MODULE,
+ },
+ .probe = i2c_au1550_probe,
+ .remove = __devexit_p(i2c_au1550_remove),
+ .suspend = i2c_au1550_suspend,
+ .resume = i2c_au1550_resume,
};
-/* BIG hack to support the control interface on the Wolfson WM8731
- * audio codec on the Pb1550 board. We get an address and two data
- * bytes to write, create an i2c message, and send it across the
- * i2c transfer function. We do this here because we have access to
- * the i2c adapter structure.
- */
-static struct i2c_msg wm_i2c_msg; /* We don't want this stuff on the stack */
-static u8 i2cbuf[2];
-
-int
-pb1550_wm_codec_write(u8 addr, u8 reg, u8 val)
-{
- wm_i2c_msg.addr = addr;
- wm_i2c_msg.flags = 0;
- wm_i2c_msg.buf = i2cbuf;
- wm_i2c_msg.len = 2;
- i2cbuf[0] = reg;
- i2cbuf[1] = val;
-
- return pb1550_board_adapter.algo->master_xfer(&pb1550_board_adapter, &wm_i2c_msg, 1);
-}
-
static int __init
i2c_au1550_init(void)
{
- printk(KERN_INFO "Au1550 I2C: ");
-
- /* This is where we would set up a 50MHz clock source
- * and routing. On the Pb1550, the SMBus is PSC2, which
- * uses a shared clock with USB. This has been already
- * configured by Yamon as a 48MHz clock, close enough
- * for our work.
- */
- if (i2c_au1550_add_bus(&pb1550_board_adapter) < 0) {
- printk("failed to initialize.\n");
- return -ENODEV;
- }
-
- printk("initialized.\n");
- return 0;
+ return platform_driver_register(&au1xpsc_smbus_driver);
}
static void __exit
i2c_au1550_exit(void)
{
- i2c_au1550_del_bus(&pb1550_board_adapter);
+ platform_driver_unregister(&au1xpsc_smbus_driver);
}
MODULE_AUTHOR("Dan Malek, Embedded Edge, LLC.");
diff --git a/drivers/i2c/busses/i2c-au1550.h b/drivers/i2c/busses/i2c-au1550.h
deleted file mode 100644
index fce15d161ae..00000000000
--- a/drivers/i2c/busses/i2c-au1550.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Copyright (C) 2004 Embedded Edge, LLC <dan@embeddededge.com>
- * 2.6 port by Matt Porter <mporter@kernel.crashing.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef I2C_AU1550_H
-#define I2C_AU1550_H
-
-struct i2c_au1550_data {
- u32 psc_base;
- int xfer_timeout;
- int ack_timeout;
-};
-
-int i2c_au1550_add_bus(struct i2c_adapter *);
-int i2c_au1550_del_bus(struct i2c_adapter *);
-
-#endif /* I2C_AU1550_H */
diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c
index 67224a424ab..7dbdaeb707a 100644
--- a/drivers/i2c/busses/i2c-bfin-twi.c
+++ b/drivers/i2c/busses/i2c-bfin-twi.c
@@ -550,6 +550,7 @@ static int i2c_bfin_twi_probe(struct platform_device *dev)
p_adap = &iface->adap;
p_adap->id = I2C_HW_BLACKFIN;
+ p_adap->nr = dev->id;
strlcpy(p_adap->name, dev->name, sizeof(p_adap->name));
p_adap->algo = &bfin_twi_algorithm;
p_adap->algo_data = iface;
@@ -576,7 +577,7 @@ static int i2c_bfin_twi_probe(struct platform_device *dev)
bfin_write_TWI_CONTROL(bfin_read_TWI_CONTROL() | TWI_ENA);
SSYNC();
- rc = i2c_add_adapter(p_adap);
+ rc = i2c_add_numbered_adapter(p_adap);
if (rc < 0)
free_irq(iface->irq, iface);
else
diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
index 67679882ebe..cce5a614758 100644
--- a/drivers/i2c/busses/i2c-davinci.c
+++ b/drivers/i2c/busses/i2c-davinci.c
@@ -510,7 +510,6 @@ static int davinci_i2c_probe(struct platform_device *pdev)
/* FIXME */
adap->timeout = 1;
- adap->retries = 1;
adap->nr = pdev->id;
r = i2c_add_numbered_adapter(adap);
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index ac27e5f84eb..aa9157913b9 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -4,6 +4,7 @@
Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>, and Mark D. Studebaker
<mdsxyz123@yahoo.com>
+ Copyright (C) 2007 Jean Delvare <khali@linux-fr.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -21,25 +22,34 @@
*/
/*
- SUPPORTED DEVICES PCI ID
- 82801AA 2413
- 82801AB 2423
- 82801BA 2443
- 82801CA/CAM 2483
- 82801DB 24C3 (HW PEC supported)
- 82801EB 24D3 (HW PEC supported)
- 6300ESB 25A4
- ICH6 266A
- ICH7 27DA
- ESB2 269B
- ICH8 283E
- ICH9 2930
- Tolapai 5032
- This driver supports several versions of Intel's I/O Controller Hubs (ICH).
- For SMBus support, they are similar to the PIIX4 and are part
- of Intel's '810' and other chipsets.
- See the file Documentation/i2c/busses/i2c-i801 for details.
- I2C Block Read and Process Call are not supported.
+ Supports the following Intel I/O Controller Hubs (ICH):
+
+ I/O Block I2C
+ region SMBus Block proc. block
+ Chip name PCI ID size PEC buffer call read
+ ----------------------------------------------------------------------
+ 82801AA (ICH) 0x2413 16 no no no no
+ 82801AB (ICH0) 0x2423 16 no no no no
+ 82801BA (ICH2) 0x2443 16 no no no no
+ 82801CA (ICH3) 0x2483 32 soft no no no
+ 82801DB (ICH4) 0x24c3 32 hard yes no no
+ 82801E (ICH5) 0x24d3 32 hard yes yes yes
+ 6300ESB 0x25a4 32 hard yes yes yes
+ 82801F (ICH6) 0x266a 32 hard yes yes yes
+ 6310ESB/6320ESB 0x269b 32 hard yes yes yes
+ 82801G (ICH7) 0x27da 32 hard yes yes yes
+ 82801H (ICH8) 0x283e 32 hard yes yes yes
+ 82801I (ICH9) 0x2930 32 hard yes yes yes
+ Tolapai 0x5032 32 hard yes ? ?
+
+ Features supported by this driver:
+ Software PEC no
+ Hardware PEC yes
+ Block buffer yes
+ Block process call transaction no
+ I2C block read transaction yes (doesn't use the block buffer)
+
+ See the file Documentation/i2c/busses/i2c-i801 for details.
*/
/* Note: we assume there can only be one I801, with one SMBus interface */
@@ -62,9 +72,9 @@
#define SMBHSTDAT0 (5 + i801_smba)
#define SMBHSTDAT1 (6 + i801_smba)
#define SMBBLKDAT (7 + i801_smba)
-#define SMBPEC (8 + i801_smba) /* ICH4 only */
-#define SMBAUXSTS (12 + i801_smba) /* ICH4 only */
-#define SMBAUXCTL (13 + i801_smba) /* ICH4 only */
+#define SMBPEC (8 + i801_smba) /* ICH3 and later */
+#define SMBAUXSTS (12 + i801_smba) /* ICH4 and later */
+#define SMBAUXCTL (13 + i801_smba) /* ICH4 and later */
/* PCI Address Constants */
#define SMBBAR 4
@@ -91,13 +101,13 @@
#define I801_BYTE 0x04
#define I801_BYTE_DATA 0x08
#define I801_WORD_DATA 0x0C
-#define I801_PROC_CALL 0x10 /* later chips only, unimplemented */
+#define I801_PROC_CALL 0x10 /* unimplemented */
#define I801_BLOCK_DATA 0x14
-#define I801_I2C_BLOCK_DATA 0x18 /* unimplemented */
+#define I801_I2C_BLOCK_DATA 0x18 /* ICH5 and later */
#define I801_BLOCK_LAST 0x34
-#define I801_I2C_BLOCK_LAST 0x38 /* unimplemented */
+#define I801_I2C_BLOCK_LAST 0x38 /* ICH5 and later */
#define I801_START 0x40
-#define I801_PEC_EN 0x80 /* ICH4 only */
+#define I801_PEC_EN 0x80 /* ICH3 and later */
/* I801 Hosts Status register bits */
#define SMBHSTSTS_BYTE_DONE 0x80
@@ -113,7 +123,12 @@ static unsigned long i801_smba;
static unsigned char i801_original_hstcfg;
static struct pci_driver i801_driver;
static struct pci_dev *I801_dev;
-static int isich4;
+
+#define FEATURE_SMBUS_PEC (1 << 0)
+#define FEATURE_BLOCK_BUFFER (1 << 1)
+#define FEATURE_BLOCK_PROC (1 << 2)
+#define FEATURE_I2C_BLOCK_READ (1 << 3)
+static unsigned int i801_features;
static int i801_transaction(int xact)
{
@@ -242,7 +257,8 @@ static int i801_block_transaction_by_block(union i2c_smbus_data *data,
}
static int i801_block_transaction_byte_by_byte(union i2c_smbus_data *data,
- char read_write, int hwpec)
+ char read_write, int command,
+ int hwpec)
{
int i, len;
int smbcmd;
@@ -259,16 +275,24 @@ static int i801_block_transaction_byte_by_byte(union i2c_smbus_data *data,
}
for (i = 1; i <= len; i++) {
- if (i == len && read_write == I2C_SMBUS_READ)
- smbcmd = I801_BLOCK_LAST;
- else
- smbcmd = I801_BLOCK_DATA;
+ if (i == len && read_write == I2C_SMBUS_READ) {
+ if (command == I2C_SMBUS_I2C_BLOCK_DATA)
+ smbcmd = I801_I2C_BLOCK_LAST;
+ else
+ smbcmd = I801_BLOCK_LAST;
+ } else {
+ if (command == I2C_SMBUS_I2C_BLOCK_DATA
+ && read_write == I2C_SMBUS_READ)
+ smbcmd = I801_I2C_BLOCK_DATA;
+ else
+ smbcmd = I801_BLOCK_DATA;
+ }
outb_p(smbcmd | ENABLE_INT9, SMBHSTCNT);
dev_dbg(&I801_dev->dev, "Block (pre %d): CNT=%02x, CMD=%02x, "
- "ADD=%02x, DAT0=%02x, BLKDAT=%02x\n", i,
+ "ADD=%02x, DAT0=%02x, DAT1=%02x, BLKDAT=%02x\n", i,
inb_p(SMBHSTCNT), inb_p(SMBHSTCMD), inb_p(SMBHSTADD),
- inb_p(SMBHSTDAT0), inb_p(SMBBLKDAT));
+ inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1), inb_p(SMBBLKDAT));
/* Make sure the SMBus host is ready to start transmitting */
temp = inb_p(SMBHSTSTS);
@@ -332,7 +356,8 @@ static int i801_block_transaction_byte_by_byte(union i2c_smbus_data *data,
dev_dbg(&I801_dev->dev, "Error: no response!\n");
}
- if (i == 1 && read_write == I2C_SMBUS_READ) {
+ if (i == 1 && read_write == I2C_SMBUS_READ
+ && command != I2C_SMBUS_I2C_BLOCK_DATA) {
len = inb_p(SMBHSTDAT0);
if (len < 1 || len > I2C_SMBUS_BLOCK_MAX)
return -1;
@@ -353,9 +378,9 @@ static int i801_block_transaction_byte_by_byte(union i2c_smbus_data *data,
temp);
}
dev_dbg(&I801_dev->dev, "Block (post %d): CNT=%02x, CMD=%02x, "
- "ADD=%02x, DAT0=%02x, BLKDAT=%02x\n", i,
+ "ADD=%02x, DAT0=%02x, DAT1=%02x, BLKDAT=%02x\n", i,
inb_p(SMBHSTCNT), inb_p(SMBHSTCMD), inb_p(SMBHSTADD),
- inb_p(SMBHSTDAT0), inb_p(SMBBLKDAT));
+ inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1), inb_p(SMBBLKDAT));
if (result < 0)
return result;
@@ -384,33 +409,38 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write,
pci_read_config_byte(I801_dev, SMBHSTCFG, &hostc);
pci_write_config_byte(I801_dev, SMBHSTCFG,
hostc | SMBHSTCFG_I2C_EN);
- } else {
+ } else if (!(i801_features & FEATURE_I2C_BLOCK_READ)) {
dev_err(&I801_dev->dev,
- "I2C_SMBUS_I2C_BLOCK_READ not DB!\n");
+ "I2C block read is unsupported!\n");
return -1;
}
}
- if (read_write == I2C_SMBUS_WRITE) {
+ if (read_write == I2C_SMBUS_WRITE
+ || command == I2C_SMBUS_I2C_BLOCK_DATA) {
if (data->block[0] < 1)
data->block[0] = 1;
if (data->block[0] > I2C_SMBUS_BLOCK_MAX)
data->block[0] = I2C_SMBUS_BLOCK_MAX;
} else {
- data->block[0] = 32; /* max for reads */
+ data->block[0] = 32; /* max for SMBus block reads */
}
- if (isich4 && i801_set_block_buffer_mode() == 0 )
+ if ((i801_features & FEATURE_BLOCK_BUFFER)
+ && !(command == I2C_SMBUS_I2C_BLOCK_DATA
+ && read_write == I2C_SMBUS_READ)
+ && i801_set_block_buffer_mode() == 0)
result = i801_block_transaction_by_block(data, read_write,
hwpec);
else
result = i801_block_transaction_byte_by_byte(data, read_write,
- hwpec);
+ command, hwpec);
if (result == 0 && hwpec)
i801_wait_hwpec();
- if (command == I2C_SMBUS_I2C_BLOCK_DATA) {
+ if (command == I2C_SMBUS_I2C_BLOCK_DATA
+ && read_write == I2C_SMBUS_WRITE) {
/* restore saved configuration register value */
pci_write_config_byte(I801_dev, SMBHSTCFG, hostc);
}
@@ -426,7 +456,7 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
int block = 0;
int ret, xact = 0;
- hwpec = isich4 && (flags & I2C_CLIENT_PEC)
+ hwpec = (i801_features & FEATURE_SMBUS_PEC) && (flags & I2C_CLIENT_PEC)
&& size != I2C_SMBUS_QUICK
&& size != I2C_SMBUS_I2C_BLOCK_DATA;
@@ -462,12 +492,23 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
xact = I801_WORD_DATA;
break;
case I2C_SMBUS_BLOCK_DATA:
- case I2C_SMBUS_I2C_BLOCK_DATA:
outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
SMBHSTADD);
outb_p(command, SMBHSTCMD);
block = 1;
break;
+ case I2C_SMBUS_I2C_BLOCK_DATA:
+ /* NB: page 240 of ICH5 datasheet shows that the R/#W
+ * bit should be cleared here, even when reading */
+ outb_p((addr & 0x7f) << 1, SMBHSTADD);
+ if (read_write == I2C_SMBUS_READ) {
+ /* NB: page 240 of ICH5 datasheet also shows
+ * that DATA1 is the cmd field when reading */
+ outb_p(command, SMBHSTDAT1);
+ } else
+ outb_p(command, SMBHSTCMD);
+ block = 1;
+ break;
case I2C_SMBUS_PROC_CALL:
default:
dev_err(&I801_dev->dev, "Unsupported transaction %d\n", size);
@@ -487,7 +528,7 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
/* Some BIOSes don't like it when PEC is enabled at reboot or resume
time, so we forcibly disable it after every transaction. Turn off
E32B for the same reason. */
- if (hwpec)
+ if (hwpec || block)
outb_p(inb_p(SMBAUXCTL) & ~(SMBAUXCTL_CRC | SMBAUXCTL_E32B),
SMBAUXCTL);
@@ -514,9 +555,11 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
static u32 i801_func(struct i2c_adapter *adapter)
{
return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
- I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
- I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
- | (isich4 ? I2C_FUNC_SMBUS_PEC : 0);
+ I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
+ I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK |
+ ((i801_features & FEATURE_SMBUS_PEC) ? I2C_FUNC_SMBUS_PEC : 0) |
+ ((i801_features & FEATURE_I2C_BLOCK_READ) ?
+ I2C_FUNC_SMBUS_READ_I2C_BLOCK : 0);
}
static const struct i2c_algorithm smbus_algorithm = {
@@ -556,8 +599,8 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
int err;
I801_dev = dev;
+ i801_features = 0;
switch (dev->device) {
- case PCI_DEVICE_ID_INTEL_82801DB_3:
case PCI_DEVICE_ID_INTEL_82801EB_3:
case PCI_DEVICE_ID_INTEL_ESB_4:
case PCI_DEVICE_ID_INTEL_ICH6_16:
@@ -565,11 +608,13 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
case PCI_DEVICE_ID_INTEL_ESB2_17:
case PCI_DEVICE_ID_INTEL_ICH8_5:
case PCI_DEVICE_ID_INTEL_ICH9_6:
+ i801_features |= FEATURE_I2C_BLOCK_READ;
+ /* fall through */
+ case PCI_DEVICE_ID_INTEL_82801DB_3:
case PCI_DEVICE_ID_INTEL_TOLAPAI_1:
- isich4 = 1;
+ i801_features |= FEATURE_SMBUS_PEC;
+ i801_features |= FEATURE_BLOCK_BUFFER;
break;
- default:
- isich4 = 0;
}
err = pci_enable_device(dev);
@@ -610,6 +655,11 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
else
dev_dbg(&dev->dev, "SMBus using PCI Interrupt\n");
+ /* Clear special mode bits */
+ if (i801_features & (FEATURE_SMBUS_PEC | FEATURE_BLOCK_BUFFER))
+ outb_p(inb_p(SMBAUXCTL) & ~(SMBAUXCTL_CRC | SMBAUXCTL_E32B),
+ SMBAUXCTL);
+
/* set up the sysfs linkage to our parent device */
i801_adapter.dev.parent = &dev->dev;
@@ -678,9 +728,8 @@ static void __exit i2c_i801_exit(void)
pci_unregister_driver(&i801_driver);
}
-MODULE_AUTHOR ("Frodo Looijaard <frodol@dds.nl>, "
- "Philip Edelbrock <phil@netroedge.com>, "
- "and Mark D. Studebaker <mdsxyz123@yahoo.com>");
+MODULE_AUTHOR("Mark D. Studebaker <mdsxyz123@yahoo.com>, "
+ "Jean Delvare <khali@linux-fr.org>");
MODULE_DESCRIPTION("I801 SMBus driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/busses/i2c-ibm_iic.c b/drivers/i2c/busses/i2c-ibm_iic.c
index 9b43ff7270d..7c7eb0cfece 100644
--- a/drivers/i2c/busses/i2c-ibm_iic.c
+++ b/drivers/i2c/busses/i2c-ibm_iic.c
@@ -6,7 +6,7 @@
* Copyright (c) 2003, 2004 Zultys Technologies.
* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
*
- * Based on original work by
+ * Based on original work by
* Ian DaSilva <idasilva@mvista.com>
* Armin Kuster <akuster@mvista.com>
* Matt Porter <mporter@mvista.com>
@@ -86,8 +86,8 @@ static void dump_iic_regs(const char* header, struct ibm_iic_private* dev)
KERN_DEBUG " sts = 0x%02x, extsts = 0x%02x\n"
KERN_DEBUG " clkdiv = 0x%02x, xfrcnt = 0x%02x\n"
KERN_DEBUG " xtcntlss = 0x%02x, directcntl = 0x%02x\n",
- in_8(&iic->cntl), in_8(&iic->mdcntl), in_8(&iic->sts),
- in_8(&iic->extsts), in_8(&iic->clkdiv), in_8(&iic->xfrcnt),
+ in_8(&iic->cntl), in_8(&iic->mdcntl), in_8(&iic->sts),
+ in_8(&iic->extsts), in_8(&iic->clkdiv), in_8(&iic->xfrcnt),
in_8(&iic->xtcntlss), in_8(&iic->directcntl));
}
# define DUMP_REGS(h,dev) dump_iic_regs((h),(dev))
@@ -125,7 +125,7 @@ static inline void iic_interrupt_mode(struct ibm_iic_private* dev, int enable)
{
out_8(&dev->vaddr->intmsk, enable ? INTRMSK_EIMTC : 0);
}
-
+
/*
* Initialize IIC interface.
*/
@@ -134,7 +134,7 @@ static void iic_dev_init(struct ibm_iic_private* dev)
volatile struct iic_regs __iomem *iic = dev->vaddr;
DBG("%d: init\n", dev->idx);
-
+
/* Clear master address */
out_8(&iic->lmadr, 0);
out_8(&iic->hmadr, 0);
@@ -160,7 +160,7 @@ static void iic_dev_init(struct ibm_iic_private* dev)
/* Clear control register */
out_8(&iic->cntl, 0);
-
+
/* Enable interrupts if possible */
iic_interrupt_mode(dev, dev->irq >= 0);
@@ -171,7 +171,7 @@ static void iic_dev_init(struct ibm_iic_private* dev)
DUMP_REGS("iic_init", dev);
}
-/*
+/*
* Reset IIC interface
*/
static void iic_dev_reset(struct ibm_iic_private* dev)
@@ -179,42 +179,42 @@ static void iic_dev_reset(struct ibm_iic_private* dev)
volatile struct iic_regs __iomem *iic = dev->vaddr;
int i;
u8 dc;
-
+
DBG("%d: soft reset\n", dev->idx);
DUMP_REGS("reset", dev);
-
+
/* Place chip in the reset state */
out_8(&iic->xtcntlss, XTCNTLSS_SRST);
-
+
/* Check if bus is free */
- dc = in_8(&iic->directcntl);
+ dc = in_8(&iic->directcntl);
if (!DIRCTNL_FREE(dc)){
DBG("%d: trying to regain bus control\n", dev->idx);
-
+
/* Try to set bus free state */
- out_8(&iic->directcntl, DIRCNTL_SDAC | DIRCNTL_SCC);
-
+ out_8(&iic->directcntl, DIRCNTL_SDAC | DIRCNTL_SCC);
+
/* Wait until we regain bus control */
for (i = 0; i < 100; ++i){
dc = in_8(&iic->directcntl);
if (DIRCTNL_FREE(dc))
break;
-
+
/* Toggle SCL line */
dc ^= DIRCNTL_SCC;
out_8(&iic->directcntl, dc);
udelay(10);
dc ^= DIRCNTL_SCC;
out_8(&iic->directcntl, dc);
-
+
/* be nice */
cond_resched();
}
}
-
+
/* Remove reset */
out_8(&iic->xtcntlss, 0);
-
+
/* Reinitialize interface */
iic_dev_init(dev);
}
@@ -324,14 +324,14 @@ static irqreturn_t iic_handler(int irq, void *dev_id)
{
struct ibm_iic_private* dev = (struct ibm_iic_private*)dev_id;
volatile struct iic_regs __iomem *iic = dev->vaddr;
-
- DBG2("%d: irq handler, STS = 0x%02x, EXTSTS = 0x%02x\n",
+
+ DBG2("%d: irq handler, STS = 0x%02x, EXTSTS = 0x%02x\n",
dev->idx, in_8(&iic->sts), in_8(&iic->extsts));
-
+
/* Acknowledge IRQ and wakeup iic_wait_for_tc */
out_8(&iic->sts, STS_IRQA | STS_SCMP);
wake_up_interruptible(&dev->wq);
-
+
return IRQ_HANDLED;
}
@@ -341,19 +341,19 @@ static irqreturn_t iic_handler(int irq, void *dev_id)
*/
static int iic_xfer_result(struct ibm_iic_private* dev)
{
- volatile struct iic_regs __iomem *iic = dev->vaddr;
-
+ volatile struct iic_regs __iomem *iic = dev->vaddr;
+
if (unlikely(in_8(&iic->sts) & STS_ERR)){
- DBG("%d: xfer error, EXTSTS = 0x%02x\n", dev->idx,
+ DBG("%d: xfer error, EXTSTS = 0x%02x\n", dev->idx,
in_8(&iic->extsts));
-
+
/* Clear errors and possible pending IRQs */
- out_8(&iic->extsts, EXTSTS_IRQP | EXTSTS_IRQD |
+ out_8(&iic->extsts, EXTSTS_IRQP | EXTSTS_IRQD |
EXTSTS_LA | EXTSTS_ICT | EXTSTS_XFRA);
-
+
/* Flush master data buffer */
out_8(&iic->mdcntl, in_8(&iic->mdcntl) | MDCNTL_FMDB);
-
+
/* Is bus free?
* If error happened during combined xfer
* IIC interface is usually stuck in some strange
@@ -376,11 +376,11 @@ static void iic_abort_xfer(struct ibm_iic_private* dev)
{
volatile struct iic_regs __iomem *iic = dev->vaddr;
unsigned long x;
-
+
DBG("%d: iic_abort_xfer\n", dev->idx);
-
+
out_8(&iic->cntl, CNTL_HMT);
-
+
/*
* Wait for the abort command to complete.
* It's not worth to be optimized, just poll (timeout >= 1 tick)
@@ -405,13 +405,13 @@ static void iic_abort_xfer(struct ibm_iic_private* dev)
* Returns the number of transferred bytes or error (<0)
*/
static int iic_wait_for_tc(struct ibm_iic_private* dev){
-
+
volatile struct iic_regs __iomem *iic = dev->vaddr;
int ret = 0;
-
+
if (dev->irq >= 0){
/* Interrupt mode */
- ret = wait_event_interruptible_timeout(dev->wq,
+ ret = wait_event_interruptible_timeout(dev->wq,
!(in_8(&iic->sts) & STS_PT), dev->adap.timeout * HZ);
if (unlikely(ret < 0))
@@ -424,37 +424,37 @@ static int iic_wait_for_tc(struct ibm_iic_private* dev){
else {
/* Polling mode */
unsigned long x = jiffies + dev->adap.timeout * HZ;
-
+
while (in_8(&iic->sts) & STS_PT){
if (unlikely(time_after(jiffies, x))){
DBG("%d: poll timeout\n", dev->idx);
ret = -ETIMEDOUT;
break;
}
-
+
if (unlikely(signal_pending(current))){
DBG("%d: poll interrupted\n", dev->idx);
ret = -ERESTARTSYS;
break;
}
schedule();
- }
+ }
}
-
+
if (unlikely(ret < 0))
iic_abort_xfer(dev);
else
ret = iic_xfer_result(dev);
-
+
DBG2("%d: iic_wait_for_tc -> %d\n", dev->idx, ret);
-
+
return ret;
}
/*
* Low level master transfer routine
*/
-static int iic_xfer_bytes(struct ibm_iic_private* dev, struct i2c_msg* pm,
+static int iic_xfer_bytes(struct ibm_iic_private* dev, struct i2c_msg* pm,
int combined_xfer)
{
volatile struct iic_regs __iomem *iic = dev->vaddr;
@@ -465,48 +465,48 @@ static int iic_xfer_bytes(struct ibm_iic_private* dev, struct i2c_msg* pm,
u8 cntl = (in_8(&iic->cntl) & CNTL_AMD) | CNTL_PT;
if (pm->flags & I2C_M_RD)
cntl |= CNTL_RW;
-
+
loops = (len + 3) / 4;
for (i = 0; i < loops; ++i, len -= 4){
int count = len > 4 ? 4 : len;
u8 cmd = cntl | ((count - 1) << CNTL_TCT_SHIFT);
-
+
if (!(cntl & CNTL_RW))
for (j = 0; j < count; ++j)
out_8((void __iomem *)&iic->mdbuf, *buf++);
-
+
if (i < loops - 1)
cmd |= CNTL_CHT;
else if (combined_xfer)
cmd |= CNTL_RPST;
-
+
DBG2("%d: xfer_bytes, %d, CNTL = 0x%02x\n", dev->idx, count, cmd);
-
+
/* Start transfer */
out_8(&iic->cntl, cmd);
-
+
/* Wait for completion */
ret = iic_wait_for_tc(dev);
if (unlikely(ret < 0))
break;
else if (unlikely(ret != count)){
- DBG("%d: xfer_bytes, requested %d, transfered %d\n",
+ DBG("%d: xfer_bytes, requested %d, transfered %d\n",
dev->idx, count, ret);
-
+
/* If it's not a last part of xfer, abort it */
if (combined_xfer || (i < loops - 1))
iic_abort_xfer(dev);
-
+
ret = -EREMOTEIO;
- break;
+ break;
}
-
+
if (cntl & CNTL_RW)
for (j = 0; j < count; ++j)
*buf++ = in_8((void __iomem *)&iic->mdbuf);
}
-
+
return ret > 0 ? 0 : ret;
}
@@ -517,10 +517,10 @@ static inline void iic_address(struct ibm_iic_private* dev, struct i2c_msg* msg)
{
volatile struct iic_regs __iomem *iic = dev->vaddr;
u16 addr = msg->addr;
-
- DBG2("%d: iic_address, 0x%03x (%d-bit)\n", dev->idx,
+
+ DBG2("%d: iic_address, 0x%03x (%d-bit)\n", dev->idx,
addr, msg->flags & I2C_M_TEN ? 10 : 7);
-
+
if (msg->flags & I2C_M_TEN){
out_8(&iic->cntl, CNTL_AMD);
out_8(&iic->lmadr, addr);
@@ -537,15 +537,15 @@ static inline int iic_invalid_address(const struct i2c_msg* p)
return (p->addr > 0x3ff) || (!(p->flags & I2C_M_TEN) && (p->addr > 0x7f));
}
-static inline int iic_address_neq(const struct i2c_msg* p1,
+static inline int iic_address_neq(const struct i2c_msg* p1,
const struct i2c_msg* p2)
{
- return (p1->addr != p2->addr)
+ return (p1->addr != p2->addr)
|| ((p1->flags & I2C_M_TEN) != (p2->flags & I2C_M_TEN));
-}
+}
/*
- * Generic master transfer entrypoint.
+ * Generic master transfer entrypoint.
* Returns the number of processed messages or error (<0)
*/
static int iic_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
@@ -553,20 +553,20 @@ static int iic_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
struct ibm_iic_private* dev = (struct ibm_iic_private*)(i2c_get_adapdata(adap));
volatile struct iic_regs __iomem *iic = dev->vaddr;
int i, ret = 0;
-
+
DBG2("%d: iic_xfer, %d msg(s)\n", dev->idx, num);
-
+
if (!num)
return 0;
-
+
/* Check the sanity of the passed messages.
* Uhh, generic i2c layer is more suitable place for such code...
*/
if (unlikely(iic_invalid_address(&msgs[0]))){
- DBG("%d: invalid address 0x%03x (%d-bit)\n", dev->idx,
+ DBG("%d: invalid address 0x%03x (%d-bit)\n", dev->idx,
msgs[0].addr, msgs[0].flags & I2C_M_TEN ? 10 : 7);
return -EINVAL;
- }
+ }
for (i = 0; i < num; ++i){
if (unlikely(msgs[i].len <= 0)){
if (num == 1 && !msgs[0].len){
@@ -576,7 +576,7 @@ static int iic_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
*/
return iic_smbus_quick(dev, &msgs[0]);
}
- DBG("%d: invalid len %d in msg[%d]\n", dev->idx,
+ DBG("%d: invalid len %d in msg[%d]\n", dev->idx,
msgs[i].len, i);
return -EINVAL;
}
@@ -585,34 +585,34 @@ static int iic_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
return -EINVAL;
}
}
-
+
/* Check bus state */
if (unlikely((in_8(&iic->extsts) & EXTSTS_BCS_MASK) != EXTSTS_BCS_FREE)){
DBG("%d: iic_xfer, bus is not free\n", dev->idx);
-
+
/* Usually it means something serious has happend.
* We *cannot* have unfinished previous transfer
* so it doesn't make any sense to try to stop it.
- * Probably we were not able to recover from the
+ * Probably we were not able to recover from the
* previous error.
* The only *reasonable* thing I can think of here
* is soft reset. --ebs
*/
iic_dev_reset(dev);
-
+
if ((in_8(&iic->extsts) & EXTSTS_BCS_MASK) != EXTSTS_BCS_FREE){
DBG("%d: iic_xfer, bus is still not free\n", dev->idx);
return -EREMOTEIO;
}
- }
+ }
else {
/* Flush master data buffer (just in case) */
out_8(&iic->mdcntl, in_8(&iic->mdcntl) | MDCNTL_FMDB);
}
-
+
/* Load slave address */
iic_address(dev, &msgs[0]);
-
+
/* Do real transfer */
for (i = 0; i < num && !ret; ++i)
ret = iic_xfer_bytes(dev, &msgs[i], i < num - 1);
@@ -648,7 +648,7 @@ static inline u8 iic_clckdiv(unsigned int opb)
/* Convert to MHz */
opb /= 1000000;
-
+
if (opb < 20 || opb > 150){
printk(KERN_CRIT "ibm-iic: invalid OPB clock frequency %u MHz\n",
opb);
@@ -666,7 +666,7 @@ static int __devinit iic_probe(struct ocp_device *ocp){
struct i2c_adapter* adap;
struct ocp_func_iic_data* iic_data = ocp->def->additions;
int ret;
-
+
if (!iic_data)
printk(KERN_WARNING"ibm-iic%d: missing additional data!\n",
ocp->def->index);
@@ -679,7 +679,7 @@ static int __devinit iic_probe(struct ocp_device *ocp){
dev->idx = ocp->def->index;
ocp_set_drvdata(ocp, dev);
-
+
if (!request_mem_region(ocp->def->paddr, sizeof(struct iic_regs),
"ibm_iic")) {
ret = -EBUSY;
@@ -692,7 +692,7 @@ static int __devinit iic_probe(struct ocp_device *ocp){
ret = -ENXIO;
goto fail2;
}
-
+
init_waitqueue_head(&dev->wq);
dev->irq = iic_force_poll ? -1 : ocp->def->irq;
@@ -702,29 +702,29 @@ static int __devinit iic_probe(struct ocp_device *ocp){
*/
iic_interrupt_mode(dev, 0);
if (request_irq(dev->irq, iic_handler, 0, "IBM IIC", dev)){
- printk(KERN_ERR "ibm-iic%d: request_irq %d failed\n",
+ printk(KERN_ERR "ibm-iic%d: request_irq %d failed\n",
dev->idx, dev->irq);
- /* Fallback to the polling mode */
+ /* Fallback to the polling mode */
dev->irq = -1;
}
}
-
+
if (dev->irq < 0)
- printk(KERN_WARNING "ibm-iic%d: using polling mode\n",
+ printk(KERN_WARNING "ibm-iic%d: using polling mode\n",
dev->idx);
-
+
/* Board specific settings */
dev->fast_mode = iic_force_fast ? 1 : (iic_data ? iic_data->fast_mode : 0);
-
- /* clckdiv is the same for *all* IIC interfaces,
+
+ /* clckdiv is the same for *all* IIC interfaces,
* but I'd rather make a copy than introduce another global. --ebs
*/
dev->clckdiv = iic_clckdiv(ocp_sys_info.opb_bus_freq);
DBG("%d: clckdiv = %d\n", dev->idx, dev->clckdiv);
-
+
/* Initialize IIC interface */
iic_dev_init(dev);
-
+
/* Register it with i2c layer */
adap = &dev->adap;
adap->dev.parent = &ocp->dev;
@@ -736,7 +736,6 @@ static int __devinit iic_probe(struct ocp_device *ocp){
adap->client_register = NULL;
adap->client_unregister = NULL;
adap->timeout = 1;
- adap->retries = 1;
/*
* If "dev->idx" is negative we consider it as zero.
@@ -750,24 +749,24 @@ static int __devinit iic_probe(struct ocp_device *ocp){
dev->idx);
goto fail;
}
-
+
printk(KERN_INFO "ibm-iic%d: using %s mode\n", dev->idx,
dev->fast_mode ? "fast (400 kHz)" : "standard (100 kHz)");
return 0;
-fail:
+fail:
if (dev->irq >= 0){
iic_interrupt_mode(dev, 0);
free_irq(dev->irq, dev);
- }
+ }
iounmap(dev->vaddr);
-fail2:
+fail2:
release_mem_region(ocp->def->paddr, sizeof(struct iic_regs));
fail1:
ocp_set_drvdata(ocp, NULL);
- kfree(dev);
+ kfree(dev);
return ret;
}
@@ -783,13 +782,13 @@ static void __devexit iic_remove(struct ocp_device *ocp)
dev->idx);
/* That's *very* bad, just shutdown IRQ ... */
if (dev->irq >= 0){
- iic_interrupt_mode(dev, 0);
+ iic_interrupt_mode(dev, 0);
free_irq(dev->irq, dev);
dev->irq = -1;
}
} else {
if (dev->irq >= 0){
- iic_interrupt_mode(dev, 0);
+ iic_interrupt_mode(dev, 0);
free_irq(dev->irq, dev);
}
iounmap(dev->vaddr);
@@ -798,7 +797,7 @@ static void __devexit iic_remove(struct ocp_device *ocp)
}
}
-static struct ocp_device_id ibm_iic_ids[] __devinitdata =
+static struct ocp_device_id ibm_iic_ids[] __devinitdata =
{
{ .vendor = OCP_VENDOR_IBM, .function = OCP_FUNC_IIC },
{ .vendor = OCP_VENDOR_INVALID }
diff --git a/drivers/i2c/busses/i2c-ibm_iic.h b/drivers/i2c/busses/i2c-ibm_iic.h
index 59d7b437f7f..fdaa48292cb 100644
--- a/drivers/i2c/busses/i2c-ibm_iic.h
+++ b/drivers/i2c/busses/i2c-ibm_iic.h
@@ -2,11 +2,11 @@
* drivers/i2c/busses/i2c-ibm_iic.h
*
* Support for the IIC peripheral on IBM PPC 4xx
- *
+ *
* Copyright (c) 2003 Zultys Technologies.
* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
*
- * Based on original work by
+ * Based on original work by
* Ian DaSilva <idasilva@mvista.com>
* Armin Kuster <akuster@mvista.com>
* Matt Porter <mporter@mvista.com>
@@ -22,7 +22,7 @@
#ifndef __I2C_IBM_IIC_H_
#define __I2C_IBM_IIC_H_
-#include <linux/i2c.h>
+#include <linux/i2c.h>
struct iic_regs {
u16 mdbuf;
@@ -58,7 +58,7 @@ struct ibm_iic_private {
#define CNTL_TCT_MASK 0x30
#define CNTL_TCT_SHIFT 4
#define CNTL_RPST 0x08
-#define CNTL_CHT 0x04
+#define CNTL_CHT 0x04
#define CNTL_RW 0x02
#define CNTL_PT 0x01
diff --git a/drivers/i2c/busses/i2c-iop3xx.c b/drivers/i2c/busses/i2c-iop3xx.c
index c70146e4c2c..ab41400c883 100644
--- a/drivers/i2c/busses/i2c-iop3xx.c
+++ b/drivers/i2c/busses/i2c-iop3xx.c
@@ -490,7 +490,6 @@ iop3xx_i2c_probe(struct platform_device *pdev)
* Default values...should these come in from board code?
*/
new_adapter->timeout = 100;
- new_adapter->retries = 3;
new_adapter->algo = &iop3xx_i2c_algo;
init_waitqueue_head(&adapter_data->waitq);
diff --git a/drivers/i2c/busses/i2c-ixp4xx.c b/drivers/i2c/busses/i2c-ixp4xx.c
deleted file mode 100644
index 069ed7f3b39..00000000000
--- a/drivers/i2c/busses/i2c-ixp4xx.c
+++ /dev/null
@@ -1,178 +0,0 @@
-/*
- * drivers/i2c/busses/i2c-ixp4xx.c
- *
- * Intel's IXP4xx XScale NPU chipsets (IXP420, 421, 422, 425) do not have
- * an on board I2C controller but provide 16 GPIO pins that are often
- * used to create an I2C bus. This driver provides an i2c_adapter
- * interface that plugs in under algo_bit and drives the GPIO pins
- * as instructed by the alogorithm driver.
- *
- * Author: Deepak Saxena <dsaxena@plexity.net>
- *
- * Copyright (c) 2003-2004 MontaVista Software Inc.
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- *
- * NOTE: Since different platforms will use different GPIO pins for
- * I2C, this driver uses an IXP4xx-specific platform_data
- * pointer to pass the GPIO numbers to the driver. This
- * allows us to support all the different IXP4xx platforms
- * w/o having to put #ifdefs in this driver.
- *
- * See arch/arm/mach-ixp4xx/ixdp425.c for an example of building a
- * device list and filling in the ixp4xx_i2c_pins data structure
- * that is passed as the platform_data to this driver.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/i2c-algo-bit.h>
-
-#include <asm/hardware.h> /* Pick up IXP4xx-specific bits */
-
-static inline int ixp4xx_scl_pin(void *data)
-{
- return ((struct ixp4xx_i2c_pins*)data)->scl_pin;
-}
-
-static inline int ixp4xx_sda_pin(void *data)
-{
- return ((struct ixp4xx_i2c_pins*)data)->sda_pin;
-}
-
-static void ixp4xx_bit_setscl(void *data, int val)
-{
- gpio_line_set(ixp4xx_scl_pin(data), 0);
- gpio_line_config(ixp4xx_scl_pin(data),
- val ? IXP4XX_GPIO_IN : IXP4XX_GPIO_OUT );
-}
-
-static void ixp4xx_bit_setsda(void *data, int val)
-{
- gpio_line_set(ixp4xx_sda_pin(data), 0);
- gpio_line_config(ixp4xx_sda_pin(data),
- val ? IXP4XX_GPIO_IN : IXP4XX_GPIO_OUT );
-}
-
-static int ixp4xx_bit_getscl(void *data)
-{
- int scl;
-
- gpio_line_config(ixp4xx_scl_pin(data), IXP4XX_GPIO_IN );
- gpio_line_get(ixp4xx_scl_pin(data), &scl);
-
- return scl;
-}
-
-static int ixp4xx_bit_getsda(void *data)
-{
- int sda;
-
- gpio_line_config(ixp4xx_sda_pin(data), IXP4XX_GPIO_IN );
- gpio_line_get(ixp4xx_sda_pin(data), &sda);
-
- return sda;
-}
-
-struct ixp4xx_i2c_data {
- struct ixp4xx_i2c_pins *gpio_pins;
- struct i2c_adapter adapter;
- struct i2c_algo_bit_data algo_data;
-};
-
-static int ixp4xx_i2c_remove(struct platform_device *plat_dev)
-{
- struct ixp4xx_i2c_data *drv_data = platform_get_drvdata(plat_dev);
-
- platform_set_drvdata(plat_dev, NULL);
-
- i2c_del_adapter(&drv_data->adapter);
-
- kfree(drv_data);
-
- return 0;
-}
-
-static int ixp4xx_i2c_probe(struct platform_device *plat_dev)
-{
- int err;
- struct ixp4xx_i2c_pins *gpio = plat_dev->dev.platform_data;
- struct ixp4xx_i2c_data *drv_data =
- kzalloc(sizeof(struct ixp4xx_i2c_data), GFP_KERNEL);
-
- if(!drv_data)
- return -ENOMEM;
-
- drv_data->gpio_pins = gpio;
-
- /*
- * We could make a lot of these structures static, but
- * certain platforms may have multiple GPIO-based I2C
- * buses for various device domains, so we need per-device
- * algo_data->data.
- */
- drv_data->algo_data.data = gpio;
- drv_data->algo_data.setsda = ixp4xx_bit_setsda;
- drv_data->algo_data.setscl = ixp4xx_bit_setscl;
- drv_data->algo_data.getsda = ixp4xx_bit_getsda;
- drv_data->algo_data.getscl = ixp4xx_bit_getscl;
- drv_data->algo_data.udelay = 10;
- drv_data->algo_data.timeout = 100;
-
- drv_data->adapter.id = I2C_HW_B_IXP4XX;
- drv_data->adapter.class = I2C_CLASS_HWMON;
- strlcpy(drv_data->adapter.name, plat_dev->dev.driver->name,
- sizeof(drv_data->adapter.name));
- drv_data->adapter.algo_data = &drv_data->algo_data;
-
- drv_data->adapter.dev.parent = &plat_dev->dev;
-
- gpio_line_config(gpio->scl_pin, IXP4XX_GPIO_IN);
- gpio_line_config(gpio->sda_pin, IXP4XX_GPIO_IN);
- gpio_line_set(gpio->scl_pin, 0);
- gpio_line_set(gpio->sda_pin, 0);
-
- err = i2c_bit_add_bus(&drv_data->adapter);
- if (err) {
- printk(KERN_ERR "ERROR: Could not install %s\n", plat_dev->dev.bus_id);
-
- kfree(drv_data);
- return err;
- }
-
- platform_set_drvdata(plat_dev, drv_data);
-
- return 0;
-}
-
-static struct platform_driver ixp4xx_i2c_driver = {
- .probe = ixp4xx_i2c_probe,
- .remove = ixp4xx_i2c_remove,
- .driver = {
- .name = "IXP4XX-I2C",
- .owner = THIS_MODULE,
- },
-};
-
-static int __init ixp4xx_i2c_init(void)
-{
- return platform_driver_register(&ixp4xx_i2c_driver);
-}
-
-static void __exit ixp4xx_i2c_exit(void)
-{
- platform_driver_unregister(&ixp4xx_i2c_driver);
-}
-
-module_init(ixp4xx_i2c_init);
-module_exit(ixp4xx_i2c_exit);
-
-MODULE_DESCRIPTION("GPIO-based I2C adapter for IXP4xx systems");
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Deepak Saxena <dsaxena@plexity.net>");
-
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
index d8de4ac88b7..bbe787b243b 100644
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c
@@ -180,7 +180,7 @@ static void mpc_i2c_stop(struct mpc_i2c *i2c)
static int mpc_write(struct mpc_i2c *i2c, int target,
const u8 * data, int length, int restart)
{
- int i;
+ int i, result;
unsigned timeout = i2c->adap.timeout;
u32 flags = restart ? CCR_RSTA : 0;
@@ -192,15 +192,17 @@ static int mpc_write(struct mpc_i2c *i2c, int target,
/* Write target byte */
writeb((target << 1), i2c->base + MPC_I2C_DR);
- if (i2c_wait(i2c, timeout, 1) < 0)
- return -1;
+ result = i2c_wait(i2c, timeout, 1);
+ if (result < 0)
+ return result;
for (i = 0; i < length; i++) {
/* Write data byte */
writeb(data[i], i2c->base + MPC_I2C_DR);
- if (i2c_wait(i2c, timeout, 1) < 0)
- return -1;
+ result = i2c_wait(i2c, timeout, 1);
+ if (result < 0)
+ return result;
}
return 0;
@@ -210,7 +212,7 @@ static int mpc_read(struct mpc_i2c *i2c, int target,
u8 * data, int length, int restart)
{
unsigned timeout = i2c->adap.timeout;
- int i;
+ int i, result;
u32 flags = restart ? CCR_RSTA : 0;
/* Start with MEN */
@@ -221,8 +223,9 @@ static int mpc_read(struct mpc_i2c *i2c, int target,
/* Write target address byte - this time with the read flag set */
writeb((target << 1) | 1, i2c->base + MPC_I2C_DR);
- if (i2c_wait(i2c, timeout, 1) < 0)
- return -1;
+ result = i2c_wait(i2c, timeout, 1);
+ if (result < 0)
+ return result;
if (length) {
if (length == 1)
@@ -234,8 +237,9 @@ static int mpc_read(struct mpc_i2c *i2c, int target,
}
for (i = 0; i < length; i++) {
- if (i2c_wait(i2c, timeout, 0) < 0)
- return -1;
+ result = i2c_wait(i2c, timeout, 0);
+ if (result < 0)
+ return result;
/* Generate txack on next to last byte */
if (i == length - 2)
@@ -309,7 +313,6 @@ static struct i2c_adapter mpc_ops = {
.algo = &mpc_algo,
.class = I2C_CLASS_HWMON,
.timeout = 1,
- .retries = 1
};
static int fsl_i2c_probe(struct platform_device *pdev)
@@ -321,9 +324,9 @@ static int fsl_i2c_probe(struct platform_device *pdev)
pdata = (struct fsl_i2c_platform_data *) pdev->dev.platform_data;
- if (!(i2c = kzalloc(sizeof(*i2c), GFP_KERNEL))) {
+ i2c = kzalloc(sizeof(*i2c), GFP_KERNEL);
+ if (!i2c)
return -ENOMEM;
- }
i2c->irq = platform_get_irq(pdev, 0);
if (i2c->irq < 0) {
diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c
index 1bf590c7416..3dac920e53e 100644
--- a/drivers/i2c/busses/i2c-nforce2.c
+++ b/drivers/i2c/busses/i2c-nforce2.c
@@ -351,6 +351,7 @@ static int __devinit nforce2_probe(struct pci_dev *dev, const struct pci_device_
pci_set_drvdata(dev, smbuses);
switch(dev->device) {
+ case PCI_DEVICE_ID_NVIDIA_NFORCE2_SMBUS:
case PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SMBUS:
case PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SMBUS:
smbuses[0].blockops = 1;
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index f2552b19ea6..da6639707ea 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -362,8 +362,6 @@ omap_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num)
omap_i2c_enable_clocks(dev);
- /* REVISIT: initialize and use adap->retries. This is an optional
- * feature */
if ((r = omap_i2c_wait_for_bb(dev)) < 0)
goto out;
diff --git a/drivers/i2c/busses/i2c-pasemi.c b/drivers/i2c/busses/i2c-pasemi.c
index ca18e0be490..1603c81e39d 100644
--- a/drivers/i2c/busses/i2c-pasemi.c
+++ b/drivers/i2c/busses/i2c-pasemi.c
@@ -368,6 +368,7 @@ static int __devinit pasemi_smb_probe(struct pci_dev *dev,
smbus->adapter.class = I2C_CLASS_HWMON;
smbus->adapter.algo = &smbus_algorithm;
smbus->adapter.algo_data = smbus;
+ smbus->adapter.nr = PCI_FUNC(dev->devfn);
/* set up the sysfs linkage to our parent device */
smbus->adapter.dev.parent = &dev->dev;
@@ -375,7 +376,7 @@ static int __devinit pasemi_smb_probe(struct pci_dev *dev,
reg_write(smbus, REG_CTL, (CTL_MTR | CTL_MRR |
(CLK_100K_DIV & CTL_CLK_M)));
- error = i2c_add_adapter(&smbus->adapter);
+ error = i2c_add_numbered_adapter(&smbus->adapter);
if (error)
goto out_release_region;
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index 167e4137ee2..9bbe96cef71 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -121,10 +121,6 @@ static int __devinit piix4_setup(struct pci_dev *PIIX4_dev,
{
unsigned char temp;
- /* match up the function */
- if (PCI_FUNC(PIIX4_dev->devfn) != id->driver_data)
- return -ENODEV;
-
dev_info(&PIIX4_dev->dev, "Found %s device\n", pci_name(PIIX4_dev));
/* Don't access SMBus on IBM systems which get corrupted eeproms */
@@ -389,28 +385,21 @@ static struct i2c_adapter piix4_adapter = {
};
static struct pci_device_id piix4_ids[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3),
- .driver_data = 3 },
- { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP200_SMBUS),
- .driver_data = 0 },
- { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP300_SMBUS),
- .driver_data = 0 },
- { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_SMBUS),
- .driver_data = 0 },
- { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS),
- .driver_data = 0 },
- { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_OSB4),
- .driver_data = 0 },
- { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5),
- .driver_data = 0 },
- { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB6),
- .driver_data = 0 },
- { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB),
- .driver_data = 0 },
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3),
- .driver_data = 3 },
- { PCI_DEVICE(PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_3),
- .driver_data = 0 },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3) },
+ { PCI_DEVICE(PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_3) },
+ { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP200_SMBUS) },
+ { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP300_SMBUS) },
+ { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_SMBUS) },
+ { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS) },
+ { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS,
+ PCI_DEVICE_ID_SERVERWORKS_OSB4) },
+ { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS,
+ PCI_DEVICE_ID_SERVERWORKS_CSB5) },
+ { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS,
+ PCI_DEVICE_ID_SERVERWORKS_CSB6) },
+ { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS,
+ PCI_DEVICE_ID_SERVERWORKS_HT1000SB) },
{ 0, }
};
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index 6426a61f8d4..2598d29fd7a 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -65,6 +65,7 @@ struct pxa_i2c {
unsigned long iosize;
int irq;
+ int use_pio;
};
#define _IBMR(i2c) ((i2c)->reg_base + 0)
@@ -163,6 +164,7 @@ static void i2c_pxa_show_state(struct pxa_i2c *i2c, int lno, const char *fname)
#define eedbg(lvl, x...) do { if ((lvl) < 1) { printk(KERN_DEBUG "" x); } } while(0)
static void i2c_pxa_master_complete(struct pxa_i2c *i2c, int ret);
+static irqreturn_t i2c_pxa_handler(int this_irq, void *dev_id);
static void i2c_pxa_scream_blue_murder(struct pxa_i2c *i2c, const char *why)
{
@@ -554,6 +556,71 @@ static inline void i2c_pxa_stop_message(struct pxa_i2c *i2c)
writel(icr, _ICR(i2c));
}
+static int i2c_pxa_pio_set_master(struct pxa_i2c *i2c)
+{
+ /* make timeout the same as for interrupt based functions */
+ long timeout = 2 * DEF_TIMEOUT;
+
+ /*
+ * Wait for the bus to become free.
+ */
+ while (timeout-- && readl(_ISR(i2c)) & (ISR_IBB | ISR_UB)) {
+ udelay(1000);
+ show_state(i2c);
+ }
+
+ if (timeout <= 0) {
+ show_state(i2c);
+ dev_err(&i2c->adap.dev,
+ "i2c_pxa: timeout waiting for bus free\n");
+ return I2C_RETRY;
+ }
+
+ /*
+ * Set master mode.
+ */
+ writel(readl(_ICR(i2c)) | ICR_SCLE, _ICR(i2c));
+
+ return 0;
+}
+
+static int i2c_pxa_do_pio_xfer(struct pxa_i2c *i2c,
+ struct i2c_msg *msg, int num)
+{
+ unsigned long timeout = 500000; /* 5 seconds */
+ int ret = 0;
+
+ ret = i2c_pxa_pio_set_master(i2c);
+ if (ret)
+ goto out;
+
+ i2c->msg = msg;
+ i2c->msg_num = num;
+ i2c->msg_idx = 0;
+ i2c->msg_ptr = 0;
+ i2c->irqlogidx = 0;
+
+ i2c_pxa_start_message(i2c);
+
+ while (timeout-- && i2c->msg_num > 0) {
+ i2c_pxa_handler(0, i2c);
+ udelay(10);
+ }
+
+ i2c_pxa_stop_message(i2c);
+
+ /*
+ * We place the return code in i2c->msg_idx.
+ */
+ ret = i2c->msg_idx;
+
+out:
+ if (timeout == 0)
+ i2c_pxa_scream_blue_murder(i2c, "timeout");
+
+ return ret;
+}
+
/*
* We are protected by the adapter bus mutex.
*/
@@ -610,6 +677,35 @@ static int i2c_pxa_do_xfer(struct pxa_i2c *i2c, struct i2c_msg *msg, int num)
return ret;
}
+static int i2c_pxa_pio_xfer(struct i2c_adapter *adap,
+ struct i2c_msg msgs[], int num)
+{
+ struct pxa_i2c *i2c = adap->algo_data;
+ int ret, i;
+
+ /* If the I2C controller is disabled we need to reset it
+ (probably due to a suspend/resume destroying state). We do
+ this here as we can then avoid worrying about resuming the
+ controller before its users. */
+ if (!(readl(_ICR(i2c)) & ICR_IUE))
+ i2c_pxa_reset(i2c);
+
+ for (i = adap->retries; i >= 0; i--) {
+ ret = i2c_pxa_do_pio_xfer(i2c, msgs, num);
+ if (ret != I2C_RETRY)
+ goto out;
+
+ if (i2c_debug)
+ dev_dbg(&adap->dev, "Retrying transmission\n");
+ udelay(100);
+ }
+ i2c_pxa_scream_blue_murder(i2c, "exhausted retries");
+ ret = -EREMOTEIO;
+ out:
+ i2c_pxa_set_slave(i2c, ret);
+ return ret;
+}
+
/*
* i2c_pxa_master_complete - complete the message and wake up.
*/
@@ -621,7 +717,8 @@ static void i2c_pxa_master_complete(struct pxa_i2c *i2c, int ret)
i2c->msg_num = 0;
if (ret)
i2c->msg_idx = ret;
- wake_up(&i2c->wait);
+ if (!i2c->use_pio)
+ wake_up(&i2c->wait);
}
static void i2c_pxa_irq_txempty(struct pxa_i2c *i2c, u32 isr)
@@ -840,6 +937,37 @@ static const struct i2c_algorithm i2c_pxa_algorithm = {
.functionality = i2c_pxa_functionality,
};
+static const struct i2c_algorithm i2c_pxa_pio_algorithm = {
+ .master_xfer = i2c_pxa_pio_xfer,
+ .functionality = i2c_pxa_functionality,
+};
+
+static void i2c_pxa_enable(struct platform_device *dev)
+{
+ if (cpu_is_pxa27x()) {
+ switch (dev->id) {
+ case 0:
+ pxa_gpio_mode(GPIO117_I2CSCL_MD);
+ pxa_gpio_mode(GPIO118_I2CSDA_MD);
+ break;
+ case 1:
+ local_irq_disable();
+ PCFR |= PCFR_PI2CEN;
+ local_irq_enable();
+ break;
+ }
+ }
+}
+
+static void i2c_pxa_disable(struct platform_device *dev)
+{
+ if (cpu_is_pxa27x() && dev->id == 1) {
+ local_irq_disable();
+ PCFR &= ~PCFR_PI2CEN;
+ local_irq_enable();
+ }
+}
+
#define res_len(r) ((r)->end - (r)->start + 1)
static int i2c_pxa_probe(struct platform_device *dev)
{
@@ -864,7 +992,6 @@ static int i2c_pxa_probe(struct platform_device *dev)
}
i2c->adap.owner = THIS_MODULE;
- i2c->adap.algo = &i2c_pxa_algorithm;
i2c->adap.retries = 5;
spin_lock_init(&i2c->lock);
@@ -899,34 +1026,28 @@ static int i2c_pxa_probe(struct platform_device *dev)
#endif
clk_enable(i2c->clk);
-#ifdef CONFIG_PXA27x
- switch (dev->id) {
- case 0:
- pxa_gpio_mode(GPIO117_I2CSCL_MD);
- pxa_gpio_mode(GPIO118_I2CSDA_MD);
- break;
- case 1:
- local_irq_disable();
- PCFR |= PCFR_PI2CEN;
- local_irq_enable();
- }
-#endif
+ i2c_pxa_enable(dev);
- ret = request_irq(irq, i2c_pxa_handler, IRQF_DISABLED,
- i2c->adap.name, i2c);
- if (ret)
- goto ereqirq;
+ if (plat) {
+ i2c->adap.class = plat->class;
+ i2c->use_pio = plat->use_pio;
+ }
+ if (i2c->use_pio) {
+ i2c->adap.algo = &i2c_pxa_pio_algorithm;
+ } else {
+ i2c->adap.algo = &i2c_pxa_algorithm;
+ ret = request_irq(irq, i2c_pxa_handler, IRQF_DISABLED,
+ i2c->adap.name, i2c);
+ if (ret)
+ goto ereqirq;
+ }
i2c_pxa_reset(i2c);
i2c->adap.algo_data = i2c;
i2c->adap.dev.parent = &dev->dev;
- if (plat) {
- i2c->adap.class = plat->class;
- }
-
/*
* If "dev->id" is negative we consider it as zero.
* The reason to do so is to avoid sysfs names that only make
@@ -952,17 +1073,11 @@ static int i2c_pxa_probe(struct platform_device *dev)
return 0;
eadapt:
- free_irq(irq, i2c);
+ if (!i2c->use_pio)
+ free_irq(irq, i2c);
ereqirq:
clk_disable(i2c->clk);
-
-#ifdef CONFIG_PXA27x
- if (dev->id == 1) {
- local_irq_disable();
- PCFR &= ~PCFR_PI2CEN;
- local_irq_enable();
- }
-#endif
+ i2c_pxa_disable(dev);
eremap:
clk_put(i2c->clk);
eclk:
@@ -979,18 +1094,12 @@ static int i2c_pxa_remove(struct platform_device *dev)
platform_set_drvdata(dev, NULL);
i2c_del_adapter(&i2c->adap);
- free_irq(i2c->irq, i2c);
+ if (!i2c->use_pio)
+ free_irq(i2c->irq, i2c);
clk_disable(i2c->clk);
clk_put(i2c->clk);
-
-#ifdef CONFIG_PXA27x
- if (dev->id == 1) {
- local_irq_disable();
- PCFR &= ~PCFR_PI2CEN;
- local_irq_enable();
- }
-#endif
+ i2c_pxa_disable(dev);
release_mem_region(i2c->iobase, i2c->iosize);
kfree(i2c);
diff --git a/drivers/i2c/busses/i2c-sibyte.c b/drivers/i2c/busses/i2c-sibyte.c
index 503a134ec80..8fbbdb4c2f3 100644
--- a/drivers/i2c/busses/i2c-sibyte.c
+++ b/drivers/i2c/busses/i2c-sibyte.c
@@ -36,14 +36,6 @@ struct i2c_algo_sibyte_data {
/* ----- global defines ----------------------------------------------- */
#define SMB_CSR(a,r) ((long)(a->reg_base + r))
-/* ----- global variables --------------------------------------------- */
-
-/* module parameters:
- */
-static int bit_scan; /* have a look at what's hanging 'round */
-module_param(bit_scan, int, 0);
-MODULE_PARM_DESC(bit_scan, "Scan for active chips on the bus");
-
static int smbus_xfer(struct i2c_adapter *i2c_adap, u16 addr,
unsigned short flags, char read_write,
@@ -140,9 +132,8 @@ static const struct i2c_algorithm i2c_sibyte_algo = {
/*
* registering functions to load algorithms at runtime
*/
-int i2c_sibyte_add_bus(struct i2c_adapter *i2c_adap, int speed)
+int __init i2c_sibyte_add_bus(struct i2c_adapter *i2c_adap, int speed)
{
- int i;
struct i2c_algo_sibyte_data *adap = i2c_adap->algo_data;
/* register new adapter to i2c module... */
@@ -152,24 +143,6 @@ int i2c_sibyte_add_bus(struct i2c_adapter *i2c_adap, int speed)
csr_out32(speed, SMB_CSR(adap,R_SMB_FREQ));
csr_out32(0, SMB_CSR(adap,R_SMB_CONTROL));
- /* scan bus */
- if (bit_scan) {
- union i2c_smbus_data data;
- int rc;
- printk(KERN_INFO " i2c-algo-sibyte.o: scanning bus %s.\n",
- i2c_adap->name);
- for (i = 0x00; i < 0x7f; i++) {
- /* XXXKW is this a realistic probe? */
- rc = smbus_xfer(i2c_adap, i, 0, I2C_SMBUS_READ, 0,
- I2C_SMBUS_BYTE_DATA, &data);
- if (!rc) {
- printk("(%02x)",i);
- } else
- printk(".");
- }
- printk("\n");
- }
-
return i2c_add_adapter(i2c_adap);
}
diff --git a/drivers/i2c/busses/i2c-stub.c b/drivers/i2c/busses/i2c-stub.c
index 84df29da1dd..c2a9f8c94f5 100644
--- a/drivers/i2c/busses/i2c-stub.c
+++ b/drivers/i2c/busses/i2c-stub.c
@@ -1,8 +1,8 @@
/*
- i2c-stub.c - Part of lm_sensors, Linux kernel modules for hardware
- monitoring
+ i2c-stub.c - I2C/SMBus chip emulator
Copyright (c) 2004 Mark M. Hoffman <mhoffman@lightlink.com>
+ Copyright (C) 2007 Jean Delvare <khali@linux-fr.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -37,8 +37,8 @@ MODULE_PARM_DESC(chip_addr,
struct stub_chip {
u8 pointer;
- u8 bytes[256];
- u16 words[256];
+ u16 words[256]; /* Byte operations use the LSB as per SMBus
+ specification */
};
static struct stub_chip *stub_chips;
@@ -75,7 +75,7 @@ static s32 stub_xfer(struct i2c_adapter * adap, u16 addr, unsigned short flags,
"wrote 0x%02x.\n",
addr, command);
} else {
- data->byte = chip->bytes[chip->pointer++];
+ data->byte = chip->words[chip->pointer++] & 0xff;
dev_dbg(&adap->dev, "smbus byte - addr 0x%02x, "
"read 0x%02x.\n",
addr, data->byte);
@@ -86,12 +86,13 @@ static s32 stub_xfer(struct i2c_adapter * adap, u16 addr, unsigned short flags,
case I2C_SMBUS_BYTE_DATA:
if (read_write == I2C_SMBUS_WRITE) {
- chip->bytes[command] = data->byte;
+ chip->words[command] &= 0xff00;
+ chip->words[command] |= data->byte;
dev_dbg(&adap->dev, "smbus byte data - addr 0x%02x, "
"wrote 0x%02x at 0x%02x.\n",
addr, data->byte, command);
} else {
- data->byte = chip->bytes[command];
+ data->byte = chip->words[command] & 0xff;
dev_dbg(&adap->dev, "smbus byte data - addr 0x%02x, "
"read 0x%02x at 0x%02x.\n",
addr, data->byte, command);
diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c
index c9ce77f13c0..77b13d027f8 100644
--- a/drivers/i2c/busses/i2c-viapro.c
+++ b/drivers/i2c/busses/i2c-viapro.c
@@ -4,7 +4,7 @@
Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>, Kyösti Mälkki <kmalkki@cc.hut.fi>,
Mark D. Studebaker <mdsxyz123@yahoo.com>
- Copyright (C) 2005 - 2007 Jean Delvare <khali@linux-fr.org>
+ Copyright (C) 2005 - 2008 Jean Delvare <khali@linux-fr.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -35,6 +35,7 @@
VT8235 0x3177 yes
VT8237R 0x3227 yes
VT8237A 0x3337 yes
+ VT8237S 0x3372 yes
VT8251 0x3287 yes
CX700 0x8324 yes
@@ -318,6 +319,10 @@ static int __devinit vt596_probe(struct pci_dev *pdev,
unsigned char temp;
int error = -ENODEV;
+ /* driver_data might come from user-space, so check it */
+ if (id->driver_data & 1 || id->driver_data > 0xff)
+ return -EINVAL;
+
/* Determine the address of the SMBus areas */
if (force_addr) {
vt596_smba = force_addr & 0xfff0;
@@ -389,6 +394,7 @@ found:
case PCI_DEVICE_ID_VIA_8251:
case PCI_DEVICE_ID_VIA_8237:
case PCI_DEVICE_ID_VIA_8237A:
+ case PCI_DEVICE_ID_VIA_8237S:
case PCI_DEVICE_ID_VIA_8235:
case PCI_DEVICE_ID_VIA_8233A:
case PCI_DEVICE_ID_VIA_8233_0:
@@ -440,6 +446,8 @@ static struct pci_device_id vt596_ids[] = {
.driver_data = SMBBA3 },
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A),
.driver_data = SMBBA3 },
+ { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237S),
+ .driver_data = SMBBA3 },
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231_4),
.driver_data = SMBBA1 },
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8251),
@@ -455,6 +463,7 @@ static struct pci_driver vt596_driver = {
.name = "vt596_smbus",
.id_table = vt596_ids,
.probe = vt596_probe,
+ .dynids.use_driver_data = 1,
};
static int __init i2c_vt596_init(void)
diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig
index 2e1c24f671c..bd7082c2443 100644
--- a/drivers/i2c/chips/Kconfig
+++ b/drivers/i2c/chips/Kconfig
@@ -4,32 +4,6 @@
menu "Miscellaneous I2C Chip support"
-config SENSORS_DS1337
- tristate "Dallas DS1337 and DS1339 Real Time Clock (DEPRECATED)"
- depends on EXPERIMENTAL
- help
- If you say yes here you get support for Dallas Semiconductor
- DS1337 and DS1339 real-time clock chips.
-
- This driver can also be built as a module. If so, the module
- will be called ds1337.
-
- This driver is deprecated and will be dropped soon. Use
- rtc-ds1307 instead.
-
-config SENSORS_DS1374
- tristate "Dallas DS1374 Real Time Clock (DEPRECATED)"
- depends on EXPERIMENTAL
- help
- If you say yes here you get support for Dallas Semiconductor
- DS1374 real-time clock chips.
-
- This driver can also be built as a module. If so, the module
- will be called ds1374.
-
- This driver is deprecated and will be dropped soon. Use
- rtc-ds1374 instead.
-
config DS1682
tristate "Dallas DS1682 Total Elapsed Time Recorder with Alarm"
depends on EXPERIMENTAL
@@ -57,7 +31,7 @@ config SENSORS_PCF8574
default n
help
If you say yes here you get support for Philips PCF8574 and
- PCF8574A chips.
+ PCF8574A chips. These chips are 8-bit I/O expanders for the I2C bus.
This driver can also be built as a module. If so, the module
will be called pcf8574.
@@ -65,6 +39,20 @@ config SENSORS_PCF8574
These devices are hard to detect and rarely found on mainstream
hardware. If unsure, say N.
+config PCF8575
+ tristate "Philips PCF8575"
+ default n
+ help
+ If you say yes here you get support for Philips PCF8575 chip.
+ This chip is a 16-bit I/O expander for the I2C bus. Several other
+ chip manufacturers sell equivalent chips, e.g. Texas Instruments.
+
+ This driver can also be built as a module. If so, the module
+ will be called pcf8575.
+
+ This device is hard to detect and is rarely found on mainstream
+ hardware. If unsure, say N.
+
config SENSORS_PCA9539
tristate "Philips PCA9539 16-bit I/O port"
depends on EXPERIMENTAL
@@ -100,12 +88,8 @@ config ISP1301_OMAP
This driver can also be built as a module. If so, the module
will be called isp1301_omap.
-# NOTE: This isn't really OMAP-specific, except for the current
-# interface location in <include/asm-arm/arch-omap/tps65010.h>
-# and having mostly OMAP-specific board support
config TPS65010
tristate "TPS6501x Power Management chips"
- depends on ARCH_OMAP
default y if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_OSK
help
If you say yes here you get support for the TPS6501x series of
@@ -116,18 +100,6 @@ config TPS65010
This driver can also be built as a module. If so, the module
will be called tps65010.
-config SENSORS_M41T00
- tristate "ST M41T00 RTC chip (DEPRECATED)"
- depends on PPC32
- help
- If you say yes here you get support for the ST M41T00 RTC chip.
-
- This driver can also be built as a module. If so, the module
- will be called m41t00.
-
- This driver is deprecated and will be dropped soon. Use
- rtc-ds1307 or rtc-m41t80 instead.
-
config SENSORS_MAX6875
tristate "Maxim MAX6875 Power supply supervisor"
depends on EXPERIMENTAL
diff --git a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile
index ca924e10595..501f00cea78 100644
--- a/drivers/i2c/chips/Makefile
+++ b/drivers/i2c/chips/Makefile
@@ -2,14 +2,12 @@
# Makefile for miscellaneous I2C chip drivers.
#
-obj-$(CONFIG_SENSORS_DS1337) += ds1337.o
-obj-$(CONFIG_SENSORS_DS1374) += ds1374.o
obj-$(CONFIG_DS1682) += ds1682.o
obj-$(CONFIG_SENSORS_EEPROM) += eeprom.o
obj-$(CONFIG_SENSORS_MAX6875) += max6875.o
-obj-$(CONFIG_SENSORS_M41T00) += m41t00.o
obj-$(CONFIG_SENSORS_PCA9539) += pca9539.o
obj-$(CONFIG_SENSORS_PCF8574) += pcf8574.o
+obj-$(CONFIG_PCF8575) += pcf8575.o
obj-$(CONFIG_SENSORS_PCF8591) += pcf8591.o
obj-$(CONFIG_ISP1301_OMAP) += isp1301_omap.o
obj-$(CONFIG_TPS65010) += tps65010.o
diff --git a/drivers/i2c/chips/ds1337.c b/drivers/i2c/chips/ds1337.c
deleted file mode 100644
index ec17d6b684a..00000000000
--- a/drivers/i2c/chips/ds1337.c
+++ /dev/null
@@ -1,410 +0,0 @@
-/*
- * linux/drivers/i2c/chips/ds1337.c
- *
- * Copyright (C) 2005 James Chapman <jchapman@katalix.com>
- *
- * based on linux/drivers/acorn/char/pcf8583.c
- * Copyright (C) 2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Driver for Dallas Semiconductor DS1337 and DS1339 real time clock chip
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/i2c.h>
-#include <linux/string.h>
-#include <linux/rtc.h> /* get the user-level API */
-#include <linux/bcd.h>
-#include <linux/list.h>
-
-/* Device registers */
-#define DS1337_REG_HOUR 2
-#define DS1337_REG_DAY 3
-#define DS1337_REG_DATE 4
-#define DS1337_REG_MONTH 5
-#define DS1337_REG_CONTROL 14
-#define DS1337_REG_STATUS 15
-
-/* FIXME - how do we export these interface constants? */
-#define DS1337_GET_DATE 0
-#define DS1337_SET_DATE 1
-
-/*
- * Functions declaration
- */
-static unsigned short normal_i2c[] = { 0x68, I2C_CLIENT_END };
-
-I2C_CLIENT_INSMOD_1(ds1337);
-
-static int ds1337_attach_adapter(struct i2c_adapter *adapter);
-static int ds1337_detect(struct i2c_adapter *adapter, int address, int kind);
-static void ds1337_init_client(struct i2c_client *client);
-static int ds1337_detach_client(struct i2c_client *client);
-static int ds1337_command(struct i2c_client *client, unsigned int cmd,
- void *arg);
-
-/*
- * Driver data (common to all clients)
- */
-static struct i2c_driver ds1337_driver = {
- .driver = {
- .name = "ds1337",
- },
- .attach_adapter = ds1337_attach_adapter,
- .detach_client = ds1337_detach_client,
- .command = ds1337_command,
-};
-
-/*
- * Client data (each client gets its own)
- */
-struct ds1337_data {
- struct i2c_client client;
- struct list_head list;
-};
-
-/*
- * Internal variables
- */
-static LIST_HEAD(ds1337_clients);
-
-static inline int ds1337_read(struct i2c_client *client, u8 reg, u8 *value)
-{
- s32 tmp = i2c_smbus_read_byte_data(client, reg);
-
- if (tmp < 0)
- return -EIO;
-
- *value = tmp;
-
- return 0;
-}
-
-/*
- * Chip access functions
- */
-static int ds1337_get_datetime(struct i2c_client *client, struct rtc_time *dt)
-{
- int result;
- u8 buf[7];
- u8 val;
- struct i2c_msg msg[2];
- u8 offs = 0;
-
- if (!dt) {
- dev_dbg(&client->dev, "%s: EINVAL: dt=NULL\n", __FUNCTION__);
- return -EINVAL;
- }
-
- msg[0].addr = client->addr;
- msg[0].flags = 0;
- msg[0].len = 1;
- msg[0].buf = &offs;
-
- msg[1].addr = client->addr;
- msg[1].flags = I2C_M_RD;
- msg[1].len = sizeof(buf);
- msg[1].buf = &buf[0];
-
- result = i2c_transfer(client->adapter, msg, 2);
-
- dev_dbg(&client->dev, "%s: [%d] %02x %02x %02x %02x %02x %02x %02x\n",
- __FUNCTION__, result, buf[0], buf[1], buf[2], buf[3],
- buf[4], buf[5], buf[6]);
-
- if (result == 2) {
- dt->tm_sec = BCD2BIN(buf[0]);
- dt->tm_min = BCD2BIN(buf[1]);
- val = buf[2] & 0x3f;
- dt->tm_hour = BCD2BIN(val);
- dt->tm_wday = BCD2BIN(buf[3]) - 1;
- dt->tm_mday = BCD2BIN(buf[4]);
- val = buf[5] & 0x7f;
- dt->tm_mon = BCD2BIN(val) - 1;
- dt->tm_year = BCD2BIN(buf[6]);
- if (buf[5] & 0x80)
- dt->tm_year += 100;
-
- dev_dbg(&client->dev, "%s: secs=%d, mins=%d, "
- "hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n",
- __FUNCTION__, dt->tm_sec, dt->tm_min,
- dt->tm_hour, dt->tm_mday,
- dt->tm_mon, dt->tm_year, dt->tm_wday);
-
- return 0;
- }
-
- dev_err(&client->dev, "error reading data! %d\n", result);
- return -EIO;
-}
-
-static int ds1337_set_datetime(struct i2c_client *client, struct rtc_time *dt)
-{
- int result;
- u8 buf[8];
- u8 val;
- struct i2c_msg msg[1];
-
- if (!dt) {
- dev_dbg(&client->dev, "%s: EINVAL: dt=NULL\n", __FUNCTION__);
- return -EINVAL;
- }
-
- dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, "
- "mday=%d, mon=%d, year=%d, wday=%d\n", __FUNCTION__,
- dt->tm_sec, dt->tm_min, dt->tm_hour,
- dt->tm_mday, dt->tm_mon, dt->tm_year, dt->tm_wday);
-
- buf[0] = 0; /* reg offset */
- buf[1] = BIN2BCD(dt->tm_sec);
- buf[2] = BIN2BCD(dt->tm_min);
- buf[3] = BIN2BCD(dt->tm_hour);
- buf[4] = BIN2BCD(dt->tm_wday + 1);
- buf[5] = BIN2BCD(dt->tm_mday);
- buf[6] = BIN2BCD(dt->tm_mon + 1);
- val = dt->tm_year;
- if (val >= 100) {
- val -= 100;
- buf[6] |= (1 << 7);
- }
- buf[7] = BIN2BCD(val);
-
- msg[0].addr = client->addr;
- msg[0].flags = 0;
- msg[0].len = sizeof(buf);
- msg[0].buf = &buf[0];
-
- result = i2c_transfer(client->adapter, msg, 1);
- if (result == 1)
- return 0;
-
- dev_err(&client->dev, "error writing data! %d\n", result);
- return -EIO;
-}
-
-static int ds1337_command(struct i2c_client *client, unsigned int cmd,
- void *arg)
-{
- dev_dbg(&client->dev, "%s: cmd=%d\n", __FUNCTION__, cmd);
-
- switch (cmd) {
- case DS1337_GET_DATE:
- return ds1337_get_datetime(client, arg);
-
- case DS1337_SET_DATE:
- return ds1337_set_datetime(client, arg);
-
- default:
- return -EINVAL;
- }
-}
-
-/*
- * Public API for access to specific device. Useful for low-level
- * RTC access from kernel code.
- */
-int ds1337_do_command(int bus, int cmd, void *arg)
-{
- struct list_head *walk;
- struct list_head *tmp;
- struct ds1337_data *data;
-
- list_for_each_safe(walk, tmp, &ds1337_clients) {
- data = list_entry(walk, struct ds1337_data, list);
- if (data->client.adapter->nr == bus)
- return ds1337_command(&data->client, cmd, arg);
- }
-
- return -ENODEV;
-}
-
-static int ds1337_attach_adapter(struct i2c_adapter *adapter)
-{
- return i2c_probe(adapter, &addr_data, ds1337_detect);
-}
-
-/*
- * The following function does more than just detection. If detection
- * succeeds, it also registers the new chip.
- */
-static int ds1337_detect(struct i2c_adapter *adapter, int address, int kind)
-{
- struct i2c_client *new_client;
- struct ds1337_data *data;
- int err = 0;
- const char *name = "";
-
- if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
- I2C_FUNC_I2C))
- goto exit;
-
- if (!(data = kzalloc(sizeof(struct ds1337_data), GFP_KERNEL))) {
- err = -ENOMEM;
- goto exit;
- }
- INIT_LIST_HEAD(&data->list);
-
- /* The common I2C client data is placed right before the
- * DS1337-specific data.
- */
- new_client = &data->client;
- i2c_set_clientdata(new_client, data);
- new_client->addr = address;
- new_client->adapter = adapter;
- new_client->driver = &ds1337_driver;
- new_client->flags = 0;
-
- /*
- * Now we do the remaining detection. A negative kind means that
- * the driver was loaded with no force parameter (default), so we
- * must both detect and identify the chip. A zero kind means that
- * the driver was loaded with the force parameter, the detection
- * step shall be skipped. A positive kind means that the driver
- * was loaded with the force parameter and a given kind of chip is
- * requested, so both the detection and the identification steps
- * are skipped.
- *
- * For detection, we read registers that are most likely to cause
- * detection failure, i.e. those that have more bits with fixed
- * or reserved values.
- */
-
- /* Default to an DS1337 if forced */
- if (kind == 0)
- kind = ds1337;
-
- if (kind < 0) { /* detection and identification */
- u8 data;
-
- /* Check that status register bits 6-2 are zero */
- if ((ds1337_read(new_client, DS1337_REG_STATUS, &data) < 0) ||
- (data & 0x7c))
- goto exit_free;
-
- /* Check for a valid day register value */
- if ((ds1337_read(new_client, DS1337_REG_DAY, &data) < 0) ||
- (data == 0) || (data & 0xf8))
- goto exit_free;
-
- /* Check for a valid date register value */
- if ((ds1337_read(new_client, DS1337_REG_DATE, &data) < 0) ||
- (data == 0) || (data & 0xc0) || ((data & 0x0f) > 9) ||
- (data >= 0x32))
- goto exit_free;
-
- /* Check for a valid month register value */
- if ((ds1337_read(new_client, DS1337_REG_MONTH, &data) < 0) ||
- (data == 0) || (data & 0x60) || ((data & 0x0f) > 9) ||
- ((data >= 0x13) && (data <= 0x19)))
- goto exit_free;
-
- /* Check that control register bits 6-5 are zero */
- if ((ds1337_read(new_client, DS1337_REG_CONTROL, &data) < 0) ||
- (data & 0x60))
- goto exit_free;
-
- kind = ds1337;
- }
-
- if (kind == ds1337)
- name = "ds1337";
-
- /* We can fill in the remaining client fields */
- strlcpy(new_client->name, name, I2C_NAME_SIZE);
-
- /* Tell the I2C layer a new client has arrived */
- if ((err = i2c_attach_client(new_client)))
- goto exit_free;
-
- /* Initialize the DS1337 chip */
- ds1337_init_client(new_client);
-
- /* Add client to local list */
- list_add(&data->list, &ds1337_clients);
-
- return 0;
-
-exit_free:
- kfree(data);
-exit:
- return err;
-}
-
-static void ds1337_init_client(struct i2c_client *client)
-{
- u8 status, control;
-
- /* On some boards, the RTC isn't configured by boot firmware.
- * Handle that case by starting/configuring the RTC now.
- */
- status = i2c_smbus_read_byte_data(client, DS1337_REG_STATUS);
- control = i2c_smbus_read_byte_data(client, DS1337_REG_CONTROL);
-
- if ((status & 0x80) || (control & 0x80)) {
- /* RTC not running */
- u8 buf[1+16]; /* First byte is interpreted as address */
- struct i2c_msg msg[1];
-
- dev_dbg(&client->dev, "%s: RTC not running!\n", __FUNCTION__);
-
- /* Initialize all, including STATUS and CONTROL to zero */
- memset(buf, 0, sizeof(buf));
-
- /* Write valid values in the date/time registers */
- buf[1+DS1337_REG_DAY] = 1;
- buf[1+DS1337_REG_DATE] = 1;
- buf[1+DS1337_REG_MONTH] = 1;
-
- msg[0].addr = client->addr;
- msg[0].flags = 0;
- msg[0].len = sizeof(buf);
- msg[0].buf = &buf[0];
-
- i2c_transfer(client->adapter, msg, 1);
- } else {
- /* Running: ensure that device is set in 24-hour mode */
- s32 val;
-
- val = i2c_smbus_read_byte_data(client, DS1337_REG_HOUR);
- if ((val >= 0) && (val & (1 << 6)))
- i2c_smbus_write_byte_data(client, DS1337_REG_HOUR,
- val & 0x3f);
- }
-}
-
-static int ds1337_detach_client(struct i2c_client *client)
-{
- int err;
- struct ds1337_data *data = i2c_get_clientdata(client);
-
- if ((err = i2c_detach_client(client)))
- return err;
-
- list_del(&data->list);
- kfree(data);
- return 0;
-}
-
-static int __init ds1337_init(void)
-{
- return i2c_add_driver(&ds1337_driver);
-}
-
-static void __exit ds1337_exit(void)
-{
- i2c_del_driver(&ds1337_driver);
-}
-
-MODULE_AUTHOR("James Chapman <jchapman@katalix.com>");
-MODULE_DESCRIPTION("DS1337 RTC driver");
-MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL_GPL(ds1337_do_command);
-
-module_init(ds1337_init);
-module_exit(ds1337_exit);
diff --git a/drivers/i2c/chips/ds1374.c b/drivers/i2c/chips/ds1374.c
deleted file mode 100644
index 8a2ff0c114d..00000000000
--- a/drivers/i2c/chips/ds1374.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/*
- * drivers/i2c/chips/ds1374.c
- *
- * I2C client/driver for the Maxim/Dallas DS1374 Real-Time Clock
- *
- * Author: Randy Vinson <rvinson@mvista.com>
- *
- * Based on the m41t00.c by Mark Greer <mgreer@mvista.com>
- *
- * 2005 (c) MontaVista Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-/*
- * This i2c client/driver wedges between the drivers/char/genrtc.c RTC
- * interface and the SMBus interface of the i2c subsystem.
- * It would be more efficient to use i2c msgs/i2c_transfer directly but, as
- * recommened in .../Documentation/i2c/writing-clients section
- * "Sending and receiving", using SMBus level communication is preferred.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/i2c.h>
-#include <linux/rtc.h>
-#include <linux/bcd.h>
-#include <linux/mutex.h>
-#include <linux/workqueue.h>
-
-#define DS1374_REG_TOD0 0x00
-#define DS1374_REG_TOD1 0x01
-#define DS1374_REG_TOD2 0x02
-#define DS1374_REG_TOD3 0x03
-#define DS1374_REG_WDALM0 0x04
-#define DS1374_REG_WDALM1 0x05
-#define DS1374_REG_WDALM2 0x06
-#define DS1374_REG_CR 0x07
-#define DS1374_REG_SR 0x08
-#define DS1374_REG_SR_OSF 0x80
-#define DS1374_REG_TCR 0x09
-
-#define DS1374_DRV_NAME "ds1374"
-
-static DEFINE_MUTEX(ds1374_mutex);
-
-static struct i2c_driver ds1374_driver;
-static struct i2c_client *save_client;
-
-static unsigned short ignore[] = { I2C_CLIENT_END };
-static unsigned short normal_addr[] = { 0x68, I2C_CLIENT_END };
-
-static struct i2c_client_address_data addr_data = {
- .normal_i2c = normal_addr,
- .probe = ignore,
- .ignore = ignore,
-};
-
-static ulong ds1374_read_rtc(void)
-{
- ulong time = 0;
- int reg = DS1374_REG_WDALM0;
-
- while (reg--) {
- s32 tmp;
- if ((tmp = i2c_smbus_read_byte_data(save_client, reg)) < 0) {
- dev_warn(&save_client->dev,
- "can't read from rtc chip\n");
- return 0;
- }
- time = (time << 8) | (tmp & 0xff);
- }
- return time;
-}
-
-static void ds1374_write_rtc(ulong time)
-{
- int reg;
-
- for (reg = DS1374_REG_TOD0; reg < DS1374_REG_WDALM0; reg++) {
- if (i2c_smbus_write_byte_data(save_client, reg, time & 0xff)
- < 0) {
- dev_warn(&save_client->dev,
- "can't write to rtc chip\n");
- break;
- }
- time = time >> 8;
- }
-}
-
-static void ds1374_check_rtc_status(void)
-{
- s32 tmp;
-
- tmp = i2c_smbus_read_byte_data(save_client, DS1374_REG_SR);
- if (tmp < 0) {
- dev_warn(&save_client->dev,
- "can't read status from rtc chip\n");
- return;
- }
- if (tmp & DS1374_REG_SR_OSF) {
- dev_warn(&save_client->dev,
- "oscillator discontinuity flagged, time unreliable\n");
- tmp &= ~DS1374_REG_SR_OSF;
- tmp = i2c_smbus_write_byte_data(save_client, DS1374_REG_SR,
- tmp & 0xff);
- if (tmp < 0)
- dev_warn(&save_client->dev,
- "can't clear discontinuity notification\n");
- }
-}
-
-ulong ds1374_get_rtc_time(void)
-{
- ulong t1, t2;
- int limit = 10; /* arbitrary retry limit */
-
- mutex_lock(&ds1374_mutex);
-
- /*
- * Since the reads are being performed one byte at a time using
- * the SMBus vs a 4-byte i2c transfer, there is a chance that a
- * carry will occur during the read. To detect this, 2 reads are
- * performed and compared.
- */
- do {
- t1 = ds1374_read_rtc();
- t2 = ds1374_read_rtc();
- } while (t1 != t2 && limit--);
-
- mutex_unlock(&ds1374_mutex);
-
- if (t1 != t2) {
- dev_warn(&save_client->dev,
- "can't get consistent time from rtc chip\n");
- t1 = 0;
- }
-
- return t1;
-}
-
-static ulong new_time;
-
-static void ds1374_set_work(struct work_struct *work)
-{
- ulong t1, t2;
- int limit = 10; /* arbitrary retry limit */
-
- t1 = new_time;
-
- mutex_lock(&ds1374_mutex);
-
- /*
- * Since the writes are being performed one byte at a time using
- * the SMBus vs a 4-byte i2c transfer, there is a chance that a
- * carry will occur during the write. To detect this, the write
- * value is read back and compared.
- */
- do {
- ds1374_write_rtc(t1);
- t2 = ds1374_read_rtc();
- } while (t1 != t2 && limit--);
-
- mutex_unlock(&ds1374_mutex);
-
- if (t1 != t2)
- dev_warn(&save_client->dev,
- "can't confirm time set from rtc chip\n");
-}
-
-static struct workqueue_struct *ds1374_workqueue;
-
-static DECLARE_WORK(ds1374_work, ds1374_set_work);
-
-int ds1374_set_rtc_time(ulong nowtime)
-{
- new_time = nowtime;
-
- if (in_interrupt())
- queue_work(ds1374_workqueue, &ds1374_work);
- else
- ds1374_set_work(NULL);
-
- return 0;
-}
-
-/*
- *****************************************************************************
- *
- * Driver Interface
- *
- *****************************************************************************
- */
-static int ds1374_probe(struct i2c_adapter *adap, int addr, int kind)
-{
- struct i2c_client *client;
- int rc;
-
- client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
- if (!client)
- return -ENOMEM;
-
- strncpy(client->name, DS1374_DRV_NAME, I2C_NAME_SIZE);
- client->addr = addr;
- client->adapter = adap;
- client->driver = &ds1374_driver;
-
- ds1374_workqueue = create_singlethread_workqueue("ds1374");
- if (!ds1374_workqueue) {
- kfree(client);
- return -ENOMEM; /* most expected reason */
- }
-
- if ((rc = i2c_attach_client(client)) != 0) {
- kfree(client);
- return rc;
- }
-
- save_client = client;
-
- ds1374_check_rtc_status();
-
- return 0;
-}
-
-static int ds1374_attach(struct i2c_adapter *adap)
-{
- return i2c_probe(adap, &addr_data, ds1374_probe);
-}
-
-static int ds1374_detach(struct i2c_client *client)
-{
- int rc;
-
- if ((rc = i2c_detach_client(client)) == 0) {
- kfree(i2c_get_clientdata(client));
- destroy_workqueue(ds1374_workqueue);
- }
- return rc;
-}
-
-static struct i2c_driver ds1374_driver = {
- .driver = {
- .name = DS1374_DRV_NAME,
- },
- .id = I2C_DRIVERID_DS1374,
- .attach_adapter = ds1374_attach,
- .detach_client = ds1374_detach,
-};
-
-static int __init ds1374_init(void)
-{
- return i2c_add_driver(&ds1374_driver);
-}
-
-static void __exit ds1374_exit(void)
-{
- i2c_del_driver(&ds1374_driver);
-}
-
-module_init(ds1374_init);
-module_exit(ds1374_exit);
-
-MODULE_AUTHOR("Randy Vinson <rvinson@mvista.com>");
-MODULE_DESCRIPTION("Maxim/Dallas DS1374 RTC I2C Client Driver");
-MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/chips/eeprom.c b/drivers/i2c/chips/eeprom.c
index 1a7eeebac50..fde297b21ad 100644
--- a/drivers/i2c/chips/eeprom.c
+++ b/drivers/i2c/chips/eeprom.c
@@ -35,7 +35,7 @@
#include <linux/mutex.h>
/* Addresses to scan */
-static unsigned short normal_i2c[] = { 0x50, 0x51, 0x52, 0x53, 0x54,
+static const unsigned short normal_i2c[] = { 0x50, 0x51, 0x52, 0x53, 0x54,
0x55, 0x56, 0x57, I2C_CLIENT_END };
/* Insmod parameters */
diff --git a/drivers/i2c/chips/isp1301_omap.c b/drivers/i2c/chips/isp1301_omap.c
index ebfbb2947ae..2a3160153f5 100644
--- a/drivers/i2c/chips/isp1301_omap.c
+++ b/drivers/i2c/chips/isp1301_omap.c
@@ -100,7 +100,7 @@ struct isp1301 {
#if defined(CONFIG_TPS65010) || defined(CONFIG_TPS65010_MODULE)
-#include <asm/arch/tps65010.h>
+#include <linux/i2c/tps65010.h>
#else
diff --git a/drivers/i2c/chips/m41t00.c b/drivers/i2c/chips/m41t00.c
deleted file mode 100644
index 3fcb646e207..00000000000
--- a/drivers/i2c/chips/m41t00.c
+++ /dev/null
@@ -1,413 +0,0 @@
-/*
- * I2C client/driver for the ST M41T00 family of i2c rtc chips.
- *
- * Author: Mark A. Greer <mgreer@mvista.com>
- *
- * 2005, 2006 (c) MontaVista Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-/*
- * This i2c client/driver wedges between the drivers/char/genrtc.c RTC
- * interface and the SMBus interface of the i2c subsystem.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/i2c.h>
-#include <linux/rtc.h>
-#include <linux/bcd.h>
-#include <linux/workqueue.h>
-#include <linux/platform_device.h>
-#include <linux/m41t00.h>
-#include <asm/time.h>
-#include <asm/rtc.h>
-
-static struct i2c_driver m41t00_driver;
-static struct i2c_client *save_client;
-
-static unsigned short ignore[] = { I2C_CLIENT_END };
-static unsigned short normal_addr[] = { I2C_CLIENT_END, I2C_CLIENT_END };
-
-static struct i2c_client_address_data addr_data = {
- .normal_i2c = normal_addr,
- .probe = ignore,
- .ignore = ignore,
-};
-
-struct m41t00_chip_info {
- u8 type;
- char *name;
- u8 read_limit;
- u8 sec; /* Offsets for chip regs */
- u8 min;
- u8 hour;
- u8 day;
- u8 mon;
- u8 year;
- u8 alarm_mon;
- u8 alarm_hour;
- u8 sqw;
- u8 sqw_freq;
-};
-
-static struct m41t00_chip_info m41t00_chip_info_tbl[] = {
- {
- .type = M41T00_TYPE_M41T00,
- .name = "m41t00",
- .read_limit = 5,
- .sec = 0,
- .min = 1,
- .hour = 2,
- .day = 4,
- .mon = 5,
- .year = 6,
- },
- {
- .type = M41T00_TYPE_M41T81,
- .name = "m41t81",
- .read_limit = 1,
- .sec = 1,
- .min = 2,
- .hour = 3,
- .day = 5,
- .mon = 6,
- .year = 7,
- .alarm_mon = 0xa,
- .alarm_hour = 0xc,
- .sqw = 0x13,
- },
- {
- .type = M41T00_TYPE_M41T85,
- .name = "m41t85",
- .read_limit = 1,
- .sec = 1,
- .min = 2,
- .hour = 3,
- .day = 5,
- .mon = 6,
- .year = 7,
- .alarm_mon = 0xa,
- .alarm_hour = 0xc,
- .sqw = 0x13,
- },
-};
-static struct m41t00_chip_info *m41t00_chip;
-
-ulong
-m41t00_get_rtc_time(void)
-{
- s32 sec, min, hour, day, mon, year;
- s32 sec1, min1, hour1, day1, mon1, year1;
- u8 reads = 0;
- u8 buf[8], msgbuf[1] = { 0 }; /* offset into rtc's regs */
- struct i2c_msg msgs[] = {
- {
- .addr = save_client->addr,
- .flags = 0,
- .len = 1,
- .buf = msgbuf,
- },
- {
- .addr = save_client->addr,
- .flags = I2C_M_RD,
- .len = 8,
- .buf = buf,
- },
- };
-
- sec = min = hour = day = mon = year = 0;
-
- do {
- if (i2c_transfer(save_client->adapter, msgs, 2) < 0)
- goto read_err;
-
- sec1 = sec;
- min1 = min;
- hour1 = hour;
- day1 = day;
- mon1 = mon;
- year1 = year;
-
- sec = buf[m41t00_chip->sec] & 0x7f;
- min = buf[m41t00_chip->min] & 0x7f;
- hour = buf[m41t00_chip->hour] & 0x3f;
- day = buf[m41t00_chip->day] & 0x3f;
- mon = buf[m41t00_chip->mon] & 0x1f;
- year = buf[m41t00_chip->year];
- } while ((++reads < m41t00_chip->read_limit) && ((sec != sec1)
- || (min != min1) || (hour != hour1) || (day != day1)
- || (mon != mon1) || (year != year1)));
-
- if ((m41t00_chip->read_limit > 1) && ((sec != sec1) || (min != min1)
- || (hour != hour1) || (day != day1) || (mon != mon1)
- || (year != year1)))
- goto read_err;
-
- sec = BCD2BIN(sec);
- min = BCD2BIN(min);
- hour = BCD2BIN(hour);
- day = BCD2BIN(day);
- mon = BCD2BIN(mon);
- year = BCD2BIN(year);
-
- year += 1900;
- if (year < 1970)
- year += 100;
-
- return mktime(year, mon, day, hour, min, sec);
-
-read_err:
- dev_err(&save_client->dev, "m41t00_get_rtc_time: Read error\n");
- return 0;
-}
-EXPORT_SYMBOL_GPL(m41t00_get_rtc_time);
-
-static void
-m41t00_set(void *arg)
-{
- struct rtc_time tm;
- int nowtime = *(int *)arg;
- s32 sec, min, hour, day, mon, year;
- u8 wbuf[9], *buf = &wbuf[1], msgbuf[1] = { 0 };
- struct i2c_msg msgs[] = {
- {
- .addr = save_client->addr,
- .flags = 0,
- .len = 1,
- .buf = msgbuf,
- },
- {
- .addr = save_client->addr,
- .flags = I2C_M_RD,
- .len = 8,
- .buf = buf,
- },
- };
-
- to_tm(nowtime, &tm);
- tm.tm_year = (tm.tm_year - 1900) % 100;
-
- sec = BIN2BCD(tm.tm_sec);
- min = BIN2BCD(tm.tm_min);
- hour = BIN2BCD(tm.tm_hour);
- day = BIN2BCD(tm.tm_mday);
- mon = BIN2BCD(tm.tm_mon);
- year = BIN2BCD(tm.tm_year);
-
- /* Read reg values into buf[0..7]/wbuf[1..8] */
- if (i2c_transfer(save_client->adapter, msgs, 2) < 0) {
- dev_err(&save_client->dev, "m41t00_set: Read error\n");
- return;
- }
-
- wbuf[0] = 0; /* offset into rtc's regs */
- buf[m41t00_chip->sec] = (buf[m41t00_chip->sec] & ~0x7f) | (sec & 0x7f);
- buf[m41t00_chip->min] = (buf[m41t00_chip->min] & ~0x7f) | (min & 0x7f);
- buf[m41t00_chip->hour] = (buf[m41t00_chip->hour] & ~0x3f) | (hour& 0x3f);
- buf[m41t00_chip->day] = (buf[m41t00_chip->day] & ~0x3f) | (day & 0x3f);
- buf[m41t00_chip->mon] = (buf[m41t00_chip->mon] & ~0x1f) | (mon & 0x1f);
- buf[m41t00_chip->year] = year;
-
- if (i2c_master_send(save_client, wbuf, 9) < 0)
- dev_err(&save_client->dev, "m41t00_set: Write error\n");
-}
-
-static ulong new_time;
-/* well, isn't this API just _lovely_? */
-static void
-m41t00_barf(struct work_struct *unusable)
-{
- m41t00_set(&new_time);
-}
-
-static struct workqueue_struct *m41t00_wq;
-static DECLARE_WORK(m41t00_work, m41t00_barf);
-
-int
-m41t00_set_rtc_time(ulong nowtime)
-{
- new_time = nowtime;
-
- if (in_interrupt())
- queue_work(m41t00_wq, &m41t00_work);
- else
- m41t00_set(&new_time);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(m41t00_set_rtc_time);
-
-/*
- *****************************************************************************
- *
- * platform_data Driver Interface
- *
- *****************************************************************************
- */
-static int __init
-m41t00_platform_probe(struct platform_device *pdev)
-{
- struct m41t00_platform_data *pdata;
- int i;
-
- if (pdev && (pdata = pdev->dev.platform_data)) {
- normal_addr[0] = pdata->i2c_addr;
-
- for (i=0; i<ARRAY_SIZE(m41t00_chip_info_tbl); i++)
- if (m41t00_chip_info_tbl[i].type == pdata->type) {
- m41t00_chip = &m41t00_chip_info_tbl[i];
- m41t00_chip->sqw_freq = pdata->sqw_freq;
- return 0;
- }
- }
- return -ENODEV;
-}
-
-static int __exit
-m41t00_platform_remove(struct platform_device *pdev)
-{
- return 0;
-}
-
-static struct platform_driver m41t00_platform_driver = {
- .probe = m41t00_platform_probe,
- .remove = m41t00_platform_remove,
- .driver = {
- .owner = THIS_MODULE,
- .name = M41T00_DRV_NAME,
- },
-};
-
-/*
- *****************************************************************************
- *
- * Driver Interface
- *
- *****************************************************************************
- */
-static int
-m41t00_probe(struct i2c_adapter *adap, int addr, int kind)
-{
- struct i2c_client *client;
- int rc;
-
- if (!i2c_check_functionality(adap, I2C_FUNC_I2C
- | I2C_FUNC_SMBUS_BYTE_DATA))
- return 0;
-
- client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
- if (!client)
- return -ENOMEM;
-
- strlcpy(client->name, m41t00_chip->name, I2C_NAME_SIZE);
- client->addr = addr;
- client->adapter = adap;
- client->driver = &m41t00_driver;
-
- if ((rc = i2c_attach_client(client)))
- goto attach_err;
-
- if (m41t00_chip->type != M41T00_TYPE_M41T00) {
- /* If asked, disable SQW, set SQW frequency & re-enable */
- if (m41t00_chip->sqw_freq)
- if (((rc = i2c_smbus_read_byte_data(client,
- m41t00_chip->alarm_mon)) < 0)
- || ((rc = i2c_smbus_write_byte_data(client,
- m41t00_chip->alarm_mon, rc & ~0x40)) <0)
- || ((rc = i2c_smbus_write_byte_data(client,
- m41t00_chip->sqw,
- m41t00_chip->sqw_freq)) < 0)
- || ((rc = i2c_smbus_write_byte_data(client,
- m41t00_chip->alarm_mon, rc | 0x40)) <0))
- goto sqw_err;
-
- /* Make sure HT (Halt Update) bit is cleared */
- if ((rc = i2c_smbus_read_byte_data(client,
- m41t00_chip->alarm_hour)) < 0)
- goto ht_err;
-
- if (rc & 0x40)
- if ((rc = i2c_smbus_write_byte_data(client,
- m41t00_chip->alarm_hour, rc & ~0x40))<0)
- goto ht_err;
- }
-
- /* Make sure ST (stop) bit is cleared */
- if ((rc = i2c_smbus_read_byte_data(client, m41t00_chip->sec)) < 0)
- goto st_err;
-
- if (rc & 0x80)
- if ((rc = i2c_smbus_write_byte_data(client, m41t00_chip->sec,
- rc & ~0x80)) < 0)
- goto st_err;
-
- m41t00_wq = create_singlethread_workqueue(m41t00_chip->name);
- save_client = client;
- return 0;
-
-st_err:
- dev_err(&client->dev, "m41t00_probe: Can't clear ST bit\n");
- goto attach_err;
-ht_err:
- dev_err(&client->dev, "m41t00_probe: Can't clear HT bit\n");
- goto attach_err;
-sqw_err:
- dev_err(&client->dev, "m41t00_probe: Can't set SQW Frequency\n");
-attach_err:
- kfree(client);
- return rc;
-}
-
-static int
-m41t00_attach(struct i2c_adapter *adap)
-{
- return i2c_probe(adap, &addr_data, m41t00_probe);
-}
-
-static int
-m41t00_detach(struct i2c_client *client)
-{
- int rc;
-
- if ((rc = i2c_detach_client(client)) == 0) {
- kfree(client);
- destroy_workqueue(m41t00_wq);
- }
- return rc;
-}
-
-static struct i2c_driver m41t00_driver = {
- .driver = {
- .name = M41T00_DRV_NAME,
- },
- .id = I2C_DRIVERID_STM41T00,
- .attach_adapter = m41t00_attach,
- .detach_client = m41t00_detach,
-};
-
-static int __init
-m41t00_init(void)
-{
- int rc;
-
- if (!(rc = platform_driver_register(&m41t00_platform_driver)))
- rc = i2c_add_driver(&m41t00_driver);
- return rc;
-}
-
-static void __exit
-m41t00_exit(void)
-{
- i2c_del_driver(&m41t00_driver);
- platform_driver_unregister(&m41t00_platform_driver);
-}
-
-module_init(m41t00_init);
-module_exit(m41t00_exit);
-
-MODULE_AUTHOR("Mark A. Greer <mgreer@mvista.com>");
-MODULE_DESCRIPTION("ST Microelectronics M41T00 RTC I2C Client Driver");
-MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/chips/max6875.c b/drivers/i2c/chips/max6875.c
index 64692f66637..fb7ea5637ec 100644
--- a/drivers/i2c/chips/max6875.c
+++ b/drivers/i2c/chips/max6875.c
@@ -34,7 +34,7 @@
#include <linux/mutex.h>
/* Do not scan - the MAX6875 access method will write to some EEPROM chips */
-static unsigned short normal_i2c[] = {I2C_CLIENT_END};
+static const unsigned short normal_i2c[] = { I2C_CLIENT_END };
/* Insmod parameters */
I2C_CLIENT_INSMOD_1(max6875);
diff --git a/drivers/i2c/chips/pcf8574.c b/drivers/i2c/chips/pcf8574.c
index 21c6dd69193..b3b830ccf20 100644
--- a/drivers/i2c/chips/pcf8574.c
+++ b/drivers/i2c/chips/pcf8574.c
@@ -41,9 +41,11 @@
#include <linux/i2c.h>
/* Addresses to scan */
-static unsigned short normal_i2c[] = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
- 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
- I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = {
+ 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
+ 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
+ I2C_CLIENT_END
+};
/* Insmod parameters */
I2C_CLIENT_INSMOD_2(pcf8574, pcf8574a);
diff --git a/drivers/i2c/chips/pcf8575.c b/drivers/i2c/chips/pcf8575.c
new file mode 100644
index 00000000000..3ea08ac0bfa
--- /dev/null
+++ b/drivers/i2c/chips/pcf8575.c
@@ -0,0 +1,214 @@
+/*
+ pcf8575.c
+
+ About the PCF8575 chip: the PCF8575 is a 16-bit I/O expander for the I2C bus
+ produced by a.o. Philips Semiconductors.
+
+ Copyright (C) 2006 Michael Hennerich, Analog Devices Inc.
+ <hennerich@blackfin.uclinux.org>
+ Based on pcf8574.c.
+
+ Copyright (c) 2007 Bart Van Assche <bart.vanassche@gmail.com>.
+ Ported this driver from ucLinux to the mainstream Linux kernel.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/slab.h> /* kzalloc() */
+#include <linux/sysfs.h> /* sysfs_create_group() */
+
+/* Addresses to scan */
+static const unsigned short normal_i2c[] = {
+ 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
+ I2C_CLIENT_END
+};
+
+/* Insmod parameters */
+I2C_CLIENT_INSMOD;
+
+
+/* Each client has this additional data */
+struct pcf8575_data {
+ struct i2c_client client;
+ int write; /* last written value, or error code */
+};
+
+static int pcf8575_attach_adapter(struct i2c_adapter *adapter);
+static int pcf8575_detect(struct i2c_adapter *adapter, int address, int kind);
+static int pcf8575_detach_client(struct i2c_client *client);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver pcf8575_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "pcf8575",
+ },
+ .attach_adapter = pcf8575_attach_adapter,
+ .detach_client = pcf8575_detach_client,
+};
+
+/* following are the sysfs callback functions */
+static ssize_t show_read(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ u16 val;
+ u8 iopin_state[2];
+
+ i2c_master_recv(client, iopin_state, 2);
+
+ val = iopin_state[0];
+ val |= iopin_state[1] << 8;
+
+ return sprintf(buf, "%u\n", val);
+}
+
+static DEVICE_ATTR(read, S_IRUGO, show_read, NULL);
+
+static ssize_t show_write(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct pcf8575_data *data = dev_get_drvdata(dev);
+ if (data->write < 0)
+ return data->write;
+ return sprintf(buf, "%d\n", data->write);
+}
+
+static ssize_t set_write(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct pcf8575_data *data = i2c_get_clientdata(client);
+ unsigned long val = simple_strtoul(buf, NULL, 10);
+ u8 iopin_state[2];
+
+ if (val > 0xffff)
+ return -EINVAL;
+
+ data->write = val;
+
+ iopin_state[0] = val & 0xFF;
+ iopin_state[1] = val >> 8;
+
+ i2c_master_send(client, iopin_state, 2);
+
+ return count;
+}
+
+static DEVICE_ATTR(write, S_IWUSR | S_IRUGO, show_write, set_write);
+
+static struct attribute *pcf8575_attributes[] = {
+ &dev_attr_read.attr,
+ &dev_attr_write.attr,
+ NULL
+};
+
+static const struct attribute_group pcf8575_attr_group = {
+ .attrs = pcf8575_attributes,
+};
+
+/*
+ * Real code
+ */
+
+static int pcf8575_attach_adapter(struct i2c_adapter *adapter)
+{
+ return i2c_probe(adapter, &addr_data, pcf8575_detect);
+}
+
+/* This function is called by i2c_probe */
+static int pcf8575_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+ struct i2c_client *client;
+ struct pcf8575_data *data;
+ int err = 0;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
+ goto exit;
+
+ /* OK. For now, we presume we have a valid client. We now create the
+ client structure, even though we cannot fill it completely yet. */
+ data = kzalloc(sizeof(struct pcf8575_data), GFP_KERNEL);
+ if (!data) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ client = &data->client;
+ i2c_set_clientdata(client, data);
+ client->addr = address;
+ client->adapter = adapter;
+ client->driver = &pcf8575_driver;
+ strlcpy(client->name, "pcf8575", I2C_NAME_SIZE);
+ data->write = -EAGAIN;
+
+ /* This is the place to detect whether the chip at the specified
+ address really is a PCF8575 chip. However, there is no method known
+ to detect whether an I2C chip is a PCF8575 or any other I2C chip. */
+
+ /* Tell the I2C layer a new client has arrived */
+ err = i2c_attach_client(client);
+ if (err)
+ goto exit_free;
+
+ /* Register sysfs hooks */
+ err = sysfs_create_group(&client->dev.kobj, &pcf8575_attr_group);
+ if (err)
+ goto exit_detach;
+
+ return 0;
+
+exit_detach:
+ i2c_detach_client(client);
+exit_free:
+ kfree(data);
+exit:
+ return err;
+}
+
+static int pcf8575_detach_client(struct i2c_client *client)
+{
+ int err;
+
+ sysfs_remove_group(&client->dev.kobj, &pcf8575_attr_group);
+
+ err = i2c_detach_client(client);
+ if (err)
+ return err;
+
+ kfree(i2c_get_clientdata(client));
+ return 0;
+}
+
+static int __init pcf8575_init(void)
+{
+ return i2c_add_driver(&pcf8575_driver);
+}
+
+static void __exit pcf8575_exit(void)
+{
+ i2c_del_driver(&pcf8575_driver);
+}
+
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>, "
+ "Bart Van Assche <bart.vanassche@gmail.com>");
+MODULE_DESCRIPTION("pcf8575 driver");
+MODULE_LICENSE("GPL");
+
+module_init(pcf8575_init);
+module_exit(pcf8575_exit);
diff --git a/drivers/i2c/chips/pcf8591.c b/drivers/i2c/chips/pcf8591.c
index 4dc36376eb3..865f4409c06 100644
--- a/drivers/i2c/chips/pcf8591.c
+++ b/drivers/i2c/chips/pcf8591.c
@@ -27,7 +27,7 @@
#include <linux/mutex.h>
/* Addresses to scan */
-static unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b, 0x4c,
+static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b, 0x4c,
0x4d, 0x4e, 0x4f, I2C_CLIENT_END };
/* Insmod parameters */
diff --git a/drivers/i2c/chips/tps65010.c b/drivers/i2c/chips/tps65010.c
index e320994b981..4154a910885 100644
--- a/drivers/i2c/chips/tps65010.c
+++ b/drivers/i2c/chips/tps65010.c
@@ -31,7 +31,7 @@
#include <linux/seq_file.h>
#include <linux/mutex.h>
-#include <asm/arch/tps65010.h>
+#include <linux/i2c/tps65010.h>
/*-------------------------------------------------------------------------*/
diff --git a/drivers/i2c/chips/tsl2550.c b/drivers/i2c/chips/tsl2550.c
index 3de4b19ba08..a10fd2791a6 100644
--- a/drivers/i2c/chips/tsl2550.c
+++ b/drivers/i2c/chips/tsl2550.c
@@ -432,11 +432,32 @@ static int __devexit tsl2550_remove(struct i2c_client *client)
return 0;
}
+#ifdef CONFIG_PM
+
+static int tsl2550_suspend(struct i2c_client *client, pm_message_t mesg)
+{
+ return tsl2550_set_power_state(client, 0);
+}
+
+static int tsl2550_resume(struct i2c_client *client)
+{
+ return tsl2550_set_power_state(client, 1);
+}
+
+#else
+
+#define tsl2550_suspend NULL
+#define tsl2550_resume NULL
+
+#endif /* CONFIG_PM */
+
static struct i2c_driver tsl2550_driver = {
.driver = {
.name = TSL2550_DRV_NAME,
.owner = THIS_MODULE,
},
+ .suspend = tsl2550_suspend,
+ .resume = tsl2550_resume,
.probe = tsl2550_probe,
.remove = __devexit_p(tsl2550_remove),
};
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index b5e13e405e7..96da22e9a5a 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -33,14 +33,15 @@
#include <linux/platform_device.h>
#include <linux/mutex.h>
#include <linux/completion.h>
+#include <linux/hardirq.h>
+#include <linux/irqflags.h>
#include <asm/uaccess.h>
+#include <asm/semaphore.h>
#include "i2c-core.h"
-static LIST_HEAD(adapters);
-static LIST_HEAD(drivers);
-static DEFINE_MUTEX(core_lists);
+static DEFINE_MUTEX(core_lock);
static DEFINE_IDR(i2c_adapter_idr);
#define is_newstyle_driver(d) ((d)->probe || (d)->remove)
@@ -198,6 +199,25 @@ static struct bus_type i2c_bus_type = {
.resume = i2c_device_resume,
};
+
+/**
+ * i2c_verify_client - return parameter as i2c_client, or NULL
+ * @dev: device, probably from some driver model iterator
+ *
+ * When traversing the driver model tree, perhaps using driver model
+ * iterators like @device_for_each_child(), you can't assume very much
+ * about the nodes you find. Use this function to avoid oopses caused
+ * by wrongly treating some non-I2C device as an i2c_client.
+ */
+struct i2c_client *i2c_verify_client(struct device *dev)
+{
+ return (dev->bus == &i2c_bus_type)
+ ? to_i2c_client(dev)
+ : NULL;
+}
+EXPORT_SYMBOL(i2c_verify_client);
+
+
/**
* i2c_new_device - instantiate an i2c device for use with a new style driver
* @adap: the adapter managing the device
@@ -276,6 +296,50 @@ void i2c_unregister_device(struct i2c_client *client)
EXPORT_SYMBOL_GPL(i2c_unregister_device);
+static int dummy_nop(struct i2c_client *client)
+{
+ return 0;
+}
+
+static struct i2c_driver dummy_driver = {
+ .driver.name = "dummy",
+ .probe = dummy_nop,
+ .remove = dummy_nop,
+};
+
+/**
+ * i2c_new_dummy - return a new i2c device bound to a dummy driver
+ * @adapter: the adapter managing the device
+ * @address: seven bit address to be used
+ * @type: optional label used for i2c_client.name
+ * Context: can sleep
+ *
+ * This returns an I2C client bound to the "dummy" driver, intended for use
+ * with devices that consume multiple addresses. Examples of such chips
+ * include various EEPROMS (like 24c04 and 24c08 models).
+ *
+ * These dummy devices have two main uses. First, most I2C and SMBus calls
+ * except i2c_transfer() need a client handle; the dummy will be that handle.
+ * And second, this prevents the specified address from being bound to a
+ * different driver.
+ *
+ * This returns the new i2c client, which should be saved for later use with
+ * i2c_unregister_device(); or NULL to indicate an error.
+ */
+struct i2c_client *
+i2c_new_dummy(struct i2c_adapter *adapter, u16 address, const char *type)
+{
+ struct i2c_board_info info = {
+ .driver_name = "dummy",
+ .addr = address,
+ };
+
+ if (type)
+ strlcpy(info.type, type, sizeof info.type);
+ return i2c_new_device(adapter, &info);
+}
+EXPORT_SYMBOL_GPL(i2c_new_dummy);
+
/* ------------------------------------------------------------------------- */
/* I2C bus adapters -- one roots each I2C or SMBUS segment */
@@ -320,18 +384,27 @@ static void i2c_scan_static_board_info(struct i2c_adapter *adapter)
mutex_unlock(&__i2c_board_lock);
}
+static int i2c_do_add_adapter(struct device_driver *d, void *data)
+{
+ struct i2c_driver *driver = to_i2c_driver(d);
+ struct i2c_adapter *adap = data;
+
+ if (driver->attach_adapter) {
+ /* We ignore the return code; if it fails, too bad */
+ driver->attach_adapter(adap);
+ }
+ return 0;
+}
+
static int i2c_register_adapter(struct i2c_adapter *adap)
{
- int res = 0;
- struct list_head *item;
- struct i2c_driver *driver;
+ int res = 0, dummy;
mutex_init(&adap->bus_lock);
mutex_init(&adap->clist_lock);
INIT_LIST_HEAD(&adap->clients);
- mutex_lock(&core_lists);
- list_add_tail(&adap->list, &adapters);
+ mutex_lock(&core_lock);
/* Add the adapter to the driver core.
* If the parent pointer is not set up,
@@ -356,19 +429,14 @@ static int i2c_register_adapter(struct i2c_adapter *adap)
i2c_scan_static_board_info(adap);
/* let legacy drivers scan this bus for matching devices */
- list_for_each(item,&drivers) {
- driver = list_entry(item, struct i2c_driver, list);
- if (driver->attach_adapter)
- /* We ignore the return code; if it fails, too bad */
- driver->attach_adapter(adap);
- }
+ dummy = bus_for_each_drv(&i2c_bus_type, NULL, adap,
+ i2c_do_add_adapter);
out_unlock:
- mutex_unlock(&core_lists);
+ mutex_unlock(&core_lock);
return res;
out_list:
- list_del(&adap->list);
idr_remove(&i2c_adapter_idr, adap->nr);
goto out_unlock;
}
@@ -394,11 +462,11 @@ retry:
if (idr_pre_get(&i2c_adapter_idr, GFP_KERNEL) == 0)
return -ENOMEM;
- mutex_lock(&core_lists);
+ mutex_lock(&core_lock);
/* "above" here means "above or equal to", sigh */
res = idr_get_new_above(&i2c_adapter_idr, adapter,
__i2c_first_dynamic_bus_num, &id);
- mutex_unlock(&core_lists);
+ mutex_unlock(&core_lock);
if (res < 0) {
if (res == -EAGAIN)
@@ -443,7 +511,7 @@ retry:
if (idr_pre_get(&i2c_adapter_idr, GFP_KERNEL) == 0)
return -ENOMEM;
- mutex_lock(&core_lists);
+ mutex_lock(&core_lock);
/* "above" here means "above or equal to", sigh;
* we need the "equal to" result to force the result
*/
@@ -452,7 +520,7 @@ retry:
status = -EBUSY;
idr_remove(&i2c_adapter_idr, id);
}
- mutex_unlock(&core_lists);
+ mutex_unlock(&core_lock);
if (status == -EAGAIN)
goto retry;
@@ -462,6 +530,21 @@ retry:
}
EXPORT_SYMBOL_GPL(i2c_add_numbered_adapter);
+static int i2c_do_del_adapter(struct device_driver *d, void *data)
+{
+ struct i2c_driver *driver = to_i2c_driver(d);
+ struct i2c_adapter *adapter = data;
+ int res;
+
+ if (!driver->detach_adapter)
+ return 0;
+ res = driver->detach_adapter(adapter);
+ if (res)
+ dev_err(&adapter->dev, "detach_adapter failed (%d) "
+ "for driver [%s]\n", res, driver->driver.name);
+ return res;
+}
+
/**
* i2c_del_adapter - unregister I2C adapter
* @adap: the adapter being unregistered
@@ -473,35 +556,24 @@ EXPORT_SYMBOL_GPL(i2c_add_numbered_adapter);
int i2c_del_adapter(struct i2c_adapter *adap)
{
struct list_head *item, *_n;
- struct i2c_adapter *adap_from_list;
- struct i2c_driver *driver;
struct i2c_client *client;
int res = 0;
- mutex_lock(&core_lists);
+ mutex_lock(&core_lock);
/* First make sure that this adapter was ever added */
- list_for_each_entry(adap_from_list, &adapters, list) {
- if (adap_from_list == adap)
- break;
- }
- if (adap_from_list != adap) {
+ if (idr_find(&i2c_adapter_idr, adap->nr) != adap) {
pr_debug("i2c-core: attempting to delete unregistered "
"adapter [%s]\n", adap->name);
res = -EINVAL;
goto out_unlock;
}
- list_for_each(item,&drivers) {
- driver = list_entry(item, struct i2c_driver, list);
- if (driver->detach_adapter)
- if ((res = driver->detach_adapter(adap))) {
- dev_err(&adap->dev, "detach_adapter failed "
- "for driver [%s]\n",
- driver->driver.name);
- goto out_unlock;
- }
- }
+ /* Tell drivers about this removal */
+ res = bus_for_each_drv(&i2c_bus_type, NULL, adap,
+ i2c_do_del_adapter);
+ if (res)
+ goto out_unlock;
/* detach any active clients. This must be done first, because
* it can fail; in which case we give up. */
@@ -529,7 +601,6 @@ int i2c_del_adapter(struct i2c_adapter *adap)
/* clean up the sysfs representation */
init_completion(&adap->dev_released);
device_unregister(&adap->dev);
- list_del(&adap->list);
/* wait for sysfs to drop all references */
wait_for_completion(&adap->dev_released);
@@ -540,7 +611,7 @@ int i2c_del_adapter(struct i2c_adapter *adap)
dev_dbg(&adap->dev, "adapter [%s] unregistered\n", adap->name);
out_unlock:
- mutex_unlock(&core_lists);
+ mutex_unlock(&core_lock);
return res;
}
EXPORT_SYMBOL(i2c_del_adapter);
@@ -583,21 +654,23 @@ int i2c_register_driver(struct module *owner, struct i2c_driver *driver)
if (res)
return res;
- mutex_lock(&core_lists);
+ mutex_lock(&core_lock);
- list_add_tail(&driver->list,&drivers);
pr_debug("i2c-core: driver [%s] registered\n", driver->driver.name);
/* legacy drivers scan i2c busses directly */
if (driver->attach_adapter) {
struct i2c_adapter *adapter;
- list_for_each_entry(adapter, &adapters, list) {
+ down(&i2c_adapter_class.sem);
+ list_for_each_entry(adapter, &i2c_adapter_class.devices,
+ dev.node) {
driver->attach_adapter(adapter);
}
+ up(&i2c_adapter_class.sem);
}
- mutex_unlock(&core_lists);
+ mutex_unlock(&core_lock);
return 0;
}
EXPORT_SYMBOL(i2c_register_driver);
@@ -609,11 +682,11 @@ EXPORT_SYMBOL(i2c_register_driver);
*/
void i2c_del_driver(struct i2c_driver *driver)
{
- struct list_head *item1, *item2, *_n;
+ struct list_head *item2, *_n;
struct i2c_client *client;
struct i2c_adapter *adap;
- mutex_lock(&core_lists);
+ mutex_lock(&core_lock);
/* new-style driver? */
if (is_newstyle_driver(driver))
@@ -623,8 +696,8 @@ void i2c_del_driver(struct i2c_driver *driver)
* attached. If so, detach them to be able to kill the driver
* afterwards.
*/
- list_for_each(item1,&adapters) {
- adap = list_entry(item1, struct i2c_adapter, list);
+ down(&i2c_adapter_class.sem);
+ list_for_each_entry(adap, &i2c_adapter_class.devices, dev.node) {
if (driver->detach_adapter) {
if (driver->detach_adapter(adap)) {
dev_err(&adap->dev, "detach_adapter failed "
@@ -648,40 +721,31 @@ void i2c_del_driver(struct i2c_driver *driver)
}
}
}
+ up(&i2c_adapter_class.sem);
unregister:
driver_unregister(&driver->driver);
- list_del(&driver->list);
pr_debug("i2c-core: driver [%s] unregistered\n", driver->driver.name);
- mutex_unlock(&core_lists);
+ mutex_unlock(&core_lock);
}
EXPORT_SYMBOL(i2c_del_driver);
/* ------------------------------------------------------------------------- */
-static int __i2c_check_addr(struct i2c_adapter *adapter, unsigned int addr)
+static int __i2c_check_addr(struct device *dev, void *addrp)
{
- struct list_head *item;
- struct i2c_client *client;
+ struct i2c_client *client = i2c_verify_client(dev);
+ int addr = *(int *)addrp;
- list_for_each(item,&adapter->clients) {
- client = list_entry(item, struct i2c_client, list);
- if (client->addr == addr)
- return -EBUSY;
- }
+ if (client && client->addr == addr)
+ return -EBUSY;
return 0;
}
static int i2c_check_addr(struct i2c_adapter *adapter, int addr)
{
- int rval;
-
- mutex_lock(&adapter->clist_lock);
- rval = __i2c_check_addr(adapter, addr);
- mutex_unlock(&adapter->clist_lock);
-
- return rval;
+ return device_for_each_child(&adapter->dev, &addr, __i2c_check_addr);
}
int i2c_attach_client(struct i2c_client *client)
@@ -689,15 +753,6 @@ int i2c_attach_client(struct i2c_client *client)
struct i2c_adapter *adapter = client->adapter;
int res = 0;
- mutex_lock(&adapter->clist_lock);
- if (__i2c_check_addr(client->adapter, client->addr)) {
- res = -EBUSY;
- goto out_unlock;
- }
- list_add_tail(&client->list,&adapter->clients);
-
- client->usage_count = 0;
-
client->dev.parent = &client->adapter->dev;
client->dev.bus = &i2c_bus_type;
@@ -712,13 +767,17 @@ int i2c_attach_client(struct i2c_client *client)
snprintf(&client->dev.bus_id[0], sizeof(client->dev.bus_id),
"%d-%04x", i2c_adapter_id(adapter), client->addr);
- dev_dbg(&adapter->dev, "client [%s] registered with bus id %s\n",
- client->name, client->dev.bus_id);
res = device_register(&client->dev);
if (res)
- goto out_list;
+ goto out_err;
+
+ mutex_lock(&adapter->clist_lock);
+ list_add_tail(&client->list, &adapter->clients);
mutex_unlock(&adapter->clist_lock);
+ dev_dbg(&adapter->dev, "client [%s] registered with bus id %s\n",
+ client->name, client->dev.bus_id);
+
if (adapter->client_register) {
if (adapter->client_register(client)) {
dev_dbg(&adapter->dev, "client_register "
@@ -729,12 +788,9 @@ int i2c_attach_client(struct i2c_client *client)
return 0;
-out_list:
- list_del(&client->list);
+out_err:
dev_err(&adapter->dev, "Failed to attach i2c client %s at 0x%02x "
"(%d)\n", client->name, client->addr, res);
-out_unlock:
- mutex_unlock(&adapter->clist_lock);
return res;
}
EXPORT_SYMBOL(i2c_attach_client);
@@ -744,12 +800,6 @@ int i2c_detach_client(struct i2c_client *client)
struct i2c_adapter *adapter = client->adapter;
int res = 0;
- if (client->usage_count > 0) {
- dev_warn(&client->dev, "Client [%s] still busy, "
- "can't detach\n", client->name);
- return -EBUSY;
- }
-
if (adapter->client_unregister) {
res = adapter->client_unregister(client);
if (res) {
@@ -762,9 +812,10 @@ int i2c_detach_client(struct i2c_client *client)
mutex_lock(&adapter->clist_lock);
list_del(&client->list);
+ mutex_unlock(&adapter->clist_lock);
+
init_completion(&client->released);
device_unregister(&client->dev);
- mutex_unlock(&adapter->clist_lock);
wait_for_completion(&client->released);
out:
@@ -772,72 +823,58 @@ int i2c_detach_client(struct i2c_client *client)
}
EXPORT_SYMBOL(i2c_detach_client);
-static int i2c_inc_use_client(struct i2c_client *client)
+/**
+ * i2c_use_client - increments the reference count of the i2c client structure
+ * @client: the client being referenced
+ *
+ * Each live reference to a client should be refcounted. The driver model does
+ * that automatically as part of driver binding, so that most drivers don't
+ * need to do this explicitly: they hold a reference until they're unbound
+ * from the device.
+ *
+ * A pointer to the client with the incremented reference counter is returned.
+ */
+struct i2c_client *i2c_use_client(struct i2c_client *client)
{
-
- if (!try_module_get(client->driver->driver.owner))
- return -ENODEV;
- if (!try_module_get(client->adapter->owner)) {
- module_put(client->driver->driver.owner);
- return -ENODEV;
- }
-
- return 0;
+ get_device(&client->dev);
+ return client;
}
+EXPORT_SYMBOL(i2c_use_client);
-static void i2c_dec_use_client(struct i2c_client *client)
+/**
+ * i2c_release_client - release a use of the i2c client structure
+ * @client: the client being no longer referenced
+ *
+ * Must be called when a user of a client is finished with it.
+ */
+void i2c_release_client(struct i2c_client *client)
{
- module_put(client->driver->driver.owner);
- module_put(client->adapter->owner);
+ put_device(&client->dev);
}
+EXPORT_SYMBOL(i2c_release_client);
-int i2c_use_client(struct i2c_client *client)
-{
- int ret;
-
- ret = i2c_inc_use_client(client);
- if (ret)
- return ret;
-
- client->usage_count++;
-
- return 0;
-}
-EXPORT_SYMBOL(i2c_use_client);
+struct i2c_cmd_arg {
+ unsigned cmd;
+ void *arg;
+};
-int i2c_release_client(struct i2c_client *client)
+static int i2c_cmd(struct device *dev, void *_arg)
{
- if (!client->usage_count) {
- pr_debug("i2c-core: %s used one too many times\n",
- __FUNCTION__);
- return -EPERM;
- }
-
- client->usage_count--;
- i2c_dec_use_client(client);
+ struct i2c_client *client = i2c_verify_client(dev);
+ struct i2c_cmd_arg *arg = _arg;
+ if (client && client->driver && client->driver->command)
+ client->driver->command(client, arg->cmd, arg->arg);
return 0;
}
-EXPORT_SYMBOL(i2c_release_client);
void i2c_clients_command(struct i2c_adapter *adap, unsigned int cmd, void *arg)
{
- struct list_head *item;
- struct i2c_client *client;
+ struct i2c_cmd_arg cmd_arg;
- mutex_lock(&adap->clist_lock);
- list_for_each(item,&adap->clients) {
- client = list_entry(item, struct i2c_client, list);
- if (!try_module_get(client->driver->driver.owner))
- continue;
- if (NULL != client->driver->command) {
- mutex_unlock(&adap->clist_lock);
- client->driver->command(client,cmd,arg);
- mutex_lock(&adap->clist_lock);
- }
- module_put(client->driver->driver.owner);
- }
- mutex_unlock(&adap->clist_lock);
+ cmd_arg.cmd = cmd;
+ cmd_arg.arg = arg;
+ device_for_each_child(&adap->dev, &cmd_arg, i2c_cmd);
}
EXPORT_SYMBOL(i2c_clients_command);
@@ -848,11 +885,24 @@ static int __init i2c_init(void)
retval = bus_register(&i2c_bus_type);
if (retval)
return retval;
- return class_register(&i2c_adapter_class);
+ retval = class_register(&i2c_adapter_class);
+ if (retval)
+ goto bus_err;
+ retval = i2c_add_driver(&dummy_driver);
+ if (retval)
+ goto class_err;
+ return 0;
+
+class_err:
+ class_unregister(&i2c_adapter_class);
+bus_err:
+ bus_unregister(&i2c_bus_type);
+ return retval;
}
static void __exit i2c_exit(void)
{
+ i2c_del_driver(&dummy_driver);
class_unregister(&i2c_adapter_class);
bus_unregister(&i2c_bus_type);
}
@@ -879,7 +929,15 @@ int i2c_transfer(struct i2c_adapter * adap, struct i2c_msg *msgs, int num)
}
#endif
- mutex_lock_nested(&adap->bus_lock, adap->level);
+ if (in_atomic() || irqs_disabled()) {
+ ret = mutex_trylock(&adap->bus_lock);
+ if (!ret)
+ /* I2C activity is ongoing. */
+ return -EAGAIN;
+ } else {
+ mutex_lock_nested(&adap->bus_lock, adap->level);
+ }
+
ret = adap->algo->master_xfer(adap,msgs,num);
mutex_unlock(&adap->bus_lock);
@@ -978,7 +1036,7 @@ static int i2c_probe_address(struct i2c_adapter *adapter, int addr, int kind,
}
int i2c_probe(struct i2c_adapter *adapter,
- struct i2c_client_address_data *address_data,
+ const struct i2c_client_address_data *address_data,
int (*found_proc) (struct i2c_adapter *, int, int))
{
int i, err;
@@ -987,7 +1045,7 @@ int i2c_probe(struct i2c_adapter *adapter,
/* Force entries are done first, and are not affected by ignore
entries */
if (address_data->forces) {
- unsigned short **forces = address_data->forces;
+ const unsigned short * const *forces = address_data->forces;
int kind;
for (kind = 0; forces[kind]; kind++) {
@@ -1085,7 +1143,6 @@ i2c_new_probed_device(struct i2c_adapter *adap,
return NULL;
}
- mutex_lock(&adap->clist_lock);
for (i = 0; addr_list[i] != I2C_CLIENT_END; i++) {
/* Check address validity */
if (addr_list[i] < 0x03 || addr_list[i] > 0x77) {
@@ -1095,7 +1152,7 @@ i2c_new_probed_device(struct i2c_adapter *adap,
}
/* Check address availability */
- if (__i2c_check_addr(adap, addr_list[i])) {
+ if (i2c_check_addr(adap, addr_list[i])) {
dev_dbg(&adap->dev, "Address 0x%02x already in "
"use, not probing\n", addr_list[i]);
continue;
@@ -1123,7 +1180,6 @@ i2c_new_probed_device(struct i2c_adapter *adap,
break;
}
}
- mutex_unlock(&adap->clist_lock);
if (addr_list[i] == I2C_CLIENT_END) {
dev_dbg(&adap->dev, "Probing failed, no device found\n");
@@ -1139,12 +1195,12 @@ struct i2c_adapter* i2c_get_adapter(int id)
{
struct i2c_adapter *adapter;
- mutex_lock(&core_lists);
+ mutex_lock(&core_lock);
adapter = (struct i2c_adapter *)idr_find(&i2c_adapter_idr, id);
if (adapter && !try_module_get(adapter->owner))
adapter = NULL;
- mutex_unlock(&core_lists);
+ mutex_unlock(&core_lock);
return adapter;
}
EXPORT_SYMBOL(i2c_get_adapter);
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index df540d5dfaf..393e679d9fa 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -182,27 +182,22 @@ static ssize_t i2cdev_write (struct file *file, const char __user *buf, size_t c
return ret;
}
+static int i2cdev_check(struct device *dev, void *addrp)
+{
+ struct i2c_client *client = i2c_verify_client(dev);
+
+ if (!client || client->addr != *(unsigned int *)addrp)
+ return 0;
+
+ return dev->driver ? -EBUSY : 0;
+}
+
/* This address checking function differs from the one in i2c-core
in that it considers an address with a registered device, but no
- bound driver, as NOT busy. */
+ driver bound to it, as NOT busy. */
static int i2cdev_check_addr(struct i2c_adapter *adapter, unsigned int addr)
{
- struct list_head *item;
- struct i2c_client *client;
- int res = 0;
-
- mutex_lock(&adapter->clist_lock);
- list_for_each(item, &adapter->clients) {
- client = list_entry(item, struct i2c_client, list);
- if (client->addr == addr) {
- if (client->driver)
- res = -EBUSY;
- break;
- }
- }
- mutex_unlock(&adapter->clist_lock);
-
- return res;
+ return device_for_each_child(&adapter->dev, &addr, i2cdev_check);
}
static int i2cdev_ioctl(struct inode *inode, struct file *file,
diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index ee01e273a53..64df55e20ab 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -325,7 +325,7 @@ config BLK_DEV_PLATFORM
If unsure, say N.
config BLK_DEV_CMD640
- bool "CMD640 chipset bugfix/support"
+ tristate "CMD640 chipset bugfix/support"
depends on X86
---help---
The CMD-Technologies CMD640 IDE chip is used on many common 486 and
@@ -359,9 +359,8 @@ config BLK_DEV_CMD640_ENHANCED
Otherwise say N.
config BLK_DEV_IDEPNP
- bool "PNP EIDE support"
+ tristate "PNP EIDE support"
depends on PNP
- select IDE_GENERIC
help
If you have a PnP (Plug and Play) compatible EIDE card and
would like the kernel to automatically detect and activate
@@ -375,7 +374,19 @@ config BLK_DEV_IDEPCI
bool
config IDEPCI_PCIBUS_ORDER
- def_bool BLK_DEV_IDE=y && BLK_DEV_IDEPCI
+ bool "Probe IDE PCI devices in the PCI bus order (DEPRECATED)"
+ depends on BLK_DEV_IDE=y && BLK_DEV_IDEPCI
+ default y
+ help
+ Probe IDE PCI devices in the order in which they appear on the
+ PCI bus (i.e. 00:1f.1 PCI device before 02:01.0 PCI device)
+ instead of the order in which IDE PCI host drivers are loaded.
+
+ Please note that this method of assuring stable naming of
+ IDE devices is unreliable and use other means for achieving
+ it (i.e. udev).
+
+ If in doubt, say N.
# TODO: split it on per host driver config options (or module parameters)
config BLK_DEV_OFFBOARD
@@ -789,7 +800,7 @@ config BLK_DEV_CELLEB
endif
config BLK_DEV_IDE_PMAC
- bool "Builtin PowerMac IDE support"
+ tristate "Builtin PowerMac IDE support"
depends on PPC_PMAC && IDE=y && BLK_DEV_IDE=y
help
This driver provides support for the built-in IDE controller on
@@ -843,8 +854,9 @@ config BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ
depends on BLK_DEV_IDE_AU1XXX
config IDE_ARM
- def_bool ARM && (ARCH_CLPS7500 || ARCH_RPC || ARCH_SHARK)
- select IDE_GENERIC
+ tristate "ARM IDE support"
+ depends on ARM && (ARCH_CLPS7500 || ARCH_RPC || ARCH_SHARK)
+ default y
config BLK_DEV_IDE_ICSIDE
tristate "ICS IDE interface support"
@@ -876,10 +888,9 @@ config BLK_DEV_IDE_BAST
Simtec BAST or the Thorcom VR1000
config ETRAX_IDE
- bool "ETRAX IDE support"
+ tristate "ETRAX IDE support"
depends on CRIS && BROKEN
select BLK_DEV_IDEDMA
- select IDE_GENERIC
help
Enables the ETRAX IDE driver.
@@ -911,17 +922,15 @@ config ETRAX_IDE_G27_RESET
endchoice
config IDE_H8300
- bool "H8300 IDE support"
+ tristate "H8300 IDE support"
depends on H8300
- select IDE_GENERIC
default y
help
Enables the H8300 IDE driver.
config BLK_DEV_GAYLE
- bool "Amiga Gayle IDE interface support"
+ tristate "Amiga Gayle IDE interface support"
depends on AMIGA
- select IDE_GENERIC
help
This is the IDE driver for the Amiga Gayle IDE interface. It supports
both the `A1200 style' and `A4000 style' of the Gayle IDE interface,
@@ -951,9 +960,8 @@ config BLK_DEV_IDEDOUBLER
runtime using the "ide=doubler" kernel boot parameter.
config BLK_DEV_BUDDHA
- bool "Buddha/Catweasel/X-Surf IDE interface support (EXPERIMENTAL)"
+ tristate "Buddha/Catweasel/X-Surf IDE interface support (EXPERIMENTAL)"
depends on ZORRO && EXPERIMENTAL
- select IDE_GENERIC
help
This is the IDE driver for the IDE interfaces on the Buddha,
Catweasel and X-Surf expansion boards. It supports up to two interfaces
@@ -964,9 +972,8 @@ config BLK_DEV_BUDDHA
to one of its IDE interfaces.
config BLK_DEV_FALCON_IDE
- bool "Falcon IDE interface support"
+ tristate "Falcon IDE interface support"
depends on ATARI
- select IDE_GENERIC
help
This is the IDE driver for the builtin IDE interface on the Atari
Falcon. Say Y if you have a Falcon and want to use IDE devices (hard
@@ -974,9 +981,8 @@ config BLK_DEV_FALCON_IDE
interface.
config BLK_DEV_MAC_IDE
- bool "Macintosh Quadra/Powerbook IDE interface support"
+ tristate "Macintosh Quadra/Powerbook IDE interface support"
depends on MAC
- select IDE_GENERIC
help
This is the IDE driver for the builtin IDE interface on some m68k
Macintosh models. It supports both the `Quadra style' (used in
@@ -988,18 +994,16 @@ config BLK_DEV_MAC_IDE
builtin IDE interface.
config BLK_DEV_Q40IDE
- bool "Q40/Q60 IDE interface support"
+ tristate "Q40/Q60 IDE interface support"
depends on Q40
- select IDE_GENERIC
help
Enable the on-board IDE controller in the Q40/Q60. This should
normally be on; disable it only if you are running a custom hard
drive subsystem through an expansion card.
config BLK_DEV_MPC8xx_IDE
- bool "MPC8xx IDE support"
+ tristate "MPC8xx IDE support"
depends on 8xx && (LWMON || IVMS8 || IVML24 || TQM8xxL) && IDE=y && BLK_DEV_IDE=y && !PPC_MERGE
- select IDE_GENERIC
help
This option provides support for IDE on Motorola MPC8xx Systems.
Please see 'Type of MPC8xx IDE interface' for details.
diff --git a/drivers/ide/Makefile b/drivers/ide/Makefile
index b181fc67205..0d2da89d15c 100644
--- a/drivers/ide/Makefile
+++ b/drivers/ide/Makefile
@@ -7,41 +7,37 @@
# Note : at this point, these files are compiled on all systems.
# In the future, some of these should be built conditionally.
#
-# First come modules that register themselves with the core
+# link order is important here
EXTRA_CFLAGS += -Idrivers/ide
-obj-$(CONFIG_BLK_DEV_IDE) += pci/
-
ide-core-y += ide.o ide-io.o ide-iops.o ide-lib.o ide-probe.o ide-taskfile.o
-ide-core-$(CONFIG_BLK_DEV_CMD640) += pci/cmd640.o
-
-# Core IDE code - must come before legacy
+# core IDE code
ide-core-$(CONFIG_BLK_DEV_IDEPCI) += setup-pci.o
ide-core-$(CONFIG_BLK_DEV_IDEDMA) += ide-dma.o
ide-core-$(CONFIG_IDE_PROC_FS) += ide-proc.o
-ide-core-$(CONFIG_BLK_DEV_IDEPNP) += ide-pnp.o
ide-core-$(CONFIG_BLK_DEV_IDEACPI) += ide-acpi.o
-# built-in only drivers from arm/
-ide-core-$(CONFIG_IDE_ARM) += arm/ide_arm.o
+obj-$(CONFIG_BLK_DEV_IDE) += ide-core.o
-# built-in only drivers from legacy/
-ide-core-$(CONFIG_BLK_DEV_BUDDHA) += legacy/buddha.o
-ide-core-$(CONFIG_BLK_DEV_FALCON_IDE) += legacy/falconide.o
-ide-core-$(CONFIG_BLK_DEV_GAYLE) += legacy/gayle.o
-ide-core-$(CONFIG_BLK_DEV_MAC_IDE) += legacy/macide.o
-ide-core-$(CONFIG_BLK_DEV_Q40IDE) += legacy/q40ide.o
+ifeq ($(CONFIG_IDE_ARM), y)
+ ide-arm-core-y += arm/ide_arm.o
+ obj-y += ide-arm-core.o
+endif
-# built-in only drivers from ppc/
-ide-core-$(CONFIG_BLK_DEV_MPC8xx_IDE) += ppc/mpc8xx.o
-ide-core-$(CONFIG_BLK_DEV_IDE_PMAC) += ppc/pmac.o
+obj-$(CONFIG_BLK_DEV_IDE) += legacy/ pci/
-# built-in only drivers from h8300/
-ide-core-$(CONFIG_IDE_H8300) += h8300/ide-h8300.o
+obj-$(CONFIG_IDEPCI_PCIBUS_ORDER) += ide-scan-pci.o
-obj-$(CONFIG_BLK_DEV_IDE) += ide-core.o
+ifeq ($(CONFIG_BLK_DEV_CMD640), y)
+ cmd640-core-y += pci/cmd640.o
+ obj-y += cmd640-core.o
+endif
+
+obj-$(CONFIG_BLK_DEV_IDE) += cris/ ppc/
+obj-$(CONFIG_BLK_DEV_IDEPNP) += ide-pnp.o
+obj-$(CONFIG_IDE_H8300) += h8300/
obj-$(CONFIG_IDE_GENERIC) += ide-generic.o
obj-$(CONFIG_BLK_DEV_IDEDISK) += ide-disk.o
@@ -49,6 +45,20 @@ obj-$(CONFIG_BLK_DEV_IDECD) += ide-cd.o
obj-$(CONFIG_BLK_DEV_IDETAPE) += ide-tape.o
obj-$(CONFIG_BLK_DEV_IDEFLOPPY) += ide-floppy.o
-obj-$(CONFIG_BLK_DEV_IDE) += legacy/ arm/ mips/
-obj-$(CONFIG_BLK_DEV_HD) += legacy/
-obj-$(CONFIG_ETRAX_IDE) += cris/
+ifeq ($(CONFIG_BLK_DEV_IDECS), y)
+ ide-cs-core-y += legacy/ide-cs.o
+ obj-y += ide-cs-core.o
+endif
+
+ifeq ($(CONFIG_BLK_DEV_PLATFORM), y)
+ ide-platform-core-y += legacy/ide_platform.o
+ obj-y += ide-platform-core.o
+endif
+
+obj-$(CONFIG_BLK_DEV_IDE) += arm/ mips/
+
+# old hd driver must be last
+ifeq ($(CONFIG_BLK_DEV_HD), y)
+ hd-core-y += legacy/hd.o
+ obj-y += hd-core.o
+endif
diff --git a/drivers/ide/arm/Makefile b/drivers/ide/arm/Makefile
index 6a78f0755f2..5f63ad21686 100644
--- a/drivers/ide/arm/Makefile
+++ b/drivers/ide/arm/Makefile
@@ -3,4 +3,8 @@ obj-$(CONFIG_BLK_DEV_IDE_ICSIDE) += icside.o
obj-$(CONFIG_BLK_DEV_IDE_RAPIDE) += rapide.o
obj-$(CONFIG_BLK_DEV_IDE_BAST) += bast-ide.o
+ifeq ($(CONFIG_IDE_ARM), m)
+ obj-m += ide_arm.o
+endif
+
EXTRA_CFLAGS := -Idrivers/ide
diff --git a/drivers/ide/arm/bast-ide.c b/drivers/ide/arm/bast-ide.c
index 48db6167bb9..45bf9c825f2 100644
--- a/drivers/ide/arm/bast-ide.c
+++ b/drivers/ide/arm/bast-ide.c
@@ -45,7 +45,7 @@ bastide_register(unsigned int base, unsigned int aux, int irq,
hw.io_ports[IDE_CONTROL_OFFSET] = aux + (6 * 0x20);
hw.irq = irq;
- ide_register_hw(&hw, NULL, 0, hwif);
+ ide_register_hw(&hw, NULL, hwif);
return 0;
}
diff --git a/drivers/ide/arm/icside.c b/drivers/ide/arm/icside.c
index 673402f4a29..8a5c7205b77 100644
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/arm/icside.c
@@ -287,26 +287,10 @@ static void icside_set_dma_mode(ide_drive_t *drive, const u8 xfer_mode)
ide_xfer_verbose(xfer_mode), 2000 / drive->drive_data);
}
-static void icside_dma_host_off(ide_drive_t *drive)
+static void icside_dma_host_set(ide_drive_t *drive, int on)
{
}
-static void icside_dma_off_quietly(ide_drive_t *drive)
-{
- drive->using_dma = 0;
-}
-
-static void icside_dma_host_on(ide_drive_t *drive)
-{
-}
-
-static int icside_dma_on(ide_drive_t *drive)
-{
- drive->using_dma = 1;
-
- return 0;
-}
-
static int icside_dma_end(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
@@ -422,10 +406,7 @@ static void icside_dma_init(ide_hwif_t *hwif)
hwif->dmatable_dma = 0;
hwif->set_dma_mode = icside_set_dma_mode;
- hwif->dma_host_off = icside_dma_host_off;
- hwif->dma_off_quietly = icside_dma_off_quietly;
- hwif->dma_host_on = icside_dma_host_on;
- hwif->ide_dma_on = icside_dma_on;
+ hwif->dma_host_set = icside_dma_host_set;
hwif->dma_setup = icside_dma_setup;
hwif->dma_exec_cmd = icside_dma_exec_cmd;
hwif->dma_start = icside_dma_start;
diff --git a/drivers/ide/arm/ide_arm.c b/drivers/ide/arm/ide_arm.c
index 8957cbadf5c..60f2497542c 100644
--- a/drivers/ide/arm/ide_arm.c
+++ b/drivers/ide/arm/ide_arm.c
@@ -24,12 +24,25 @@
# define IDE_ARM_IRQ IRQ_HARDDISK
#endif
-void __init ide_arm_init(void)
+static int __init ide_arm_init(void)
{
+ ide_hwif_t *hwif;
hw_regs_t hw;
+ u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
memset(&hw, 0, sizeof(hw));
ide_std_init_ports(&hw, IDE_ARM_IO, IDE_ARM_IO + 0x206);
hw.irq = IDE_ARM_IRQ;
- ide_register_hw(&hw, NULL, 1, NULL);
+
+ hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
+ if (hwif) {
+ ide_init_port_hw(hwif, &hw);
+ idx[0] = hwif->index;
+
+ ide_device_add(idx);
+ }
+
+ return 0;
}
+
+module_init(ide_arm_init);
diff --git a/drivers/ide/arm/rapide.c b/drivers/ide/arm/rapide.c
index 0775a3afef4..e6b56d1d48f 100644
--- a/drivers/ide/arm/rapide.c
+++ b/drivers/ide/arm/rapide.c
@@ -13,26 +13,18 @@
#include <asm/ecard.h>
-static ide_hwif_t *
-rapide_locate_hwif(void __iomem *base, void __iomem *ctrl, unsigned int sz, int irq)
+static void rapide_setup_ports(hw_regs_t *hw, void __iomem *base,
+ void __iomem *ctrl, unsigned int sz, int irq)
{
unsigned long port = (unsigned long)base;
- ide_hwif_t *hwif = ide_find_port(port);
int i;
- if (hwif == NULL)
- goto out;
-
for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
- hwif->io_ports[i] = port;
+ hw->io_ports[i] = port;
port += sz;
}
- hwif->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
- hwif->irq = irq;
- hwif->mmio = 1;
- default_hwif_mmiops(hwif);
-out:
- return hwif;
+ hw->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
+ hw->irq = irq;
}
static int __devinit
@@ -42,6 +34,7 @@ rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
void __iomem *base;
int ret;
u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+ hw_regs_t hw;
ret = ecard_request_resources(ec);
if (ret)
@@ -53,11 +46,17 @@ rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
goto release;
}
- hwif = rapide_locate_hwif(base, base + 0x818, 1 << 6, ec->irq);
+ hwif = ide_find_port((unsigned long)base);
if (hwif) {
- hwif->hwif_data = base;
- hwif->gendev.parent = &ec->dev;
- hwif->noprobe = 0;
+ memset(&hw, 0, sizeof(hw));
+ rapide_setup_ports(&hw, base, base + 0x818, 1 << 6, ec->irq);
+ hw.chipset = ide_generic;
+ hw.dev = &ec->dev;
+
+ ide_init_port_hw(hwif, &hw);
+
+ hwif->mmio = 1;
+ default_hwif_mmiops(hwif);
idx[0] = hwif->index;
diff --git a/drivers/ide/cris/Makefile b/drivers/ide/cris/Makefile
index 6176e8d6b2e..20b95960531 100644
--- a/drivers/ide/cris/Makefile
+++ b/drivers/ide/cris/Makefile
@@ -1,3 +1,3 @@
EXTRA_CFLAGS += -Idrivers/ide
-obj-y += ide-cris.o
+obj-$(CONFIG_IDE_ETRAX) += ide-cris.o
diff --git a/drivers/ide/cris/ide-cris.c b/drivers/ide/cris/ide-cris.c
index 325e608d9e6..8c3294c4d23 100644
--- a/drivers/ide/cris/ide-cris.c
+++ b/drivers/ide/cris/ide-cris.c
@@ -673,9 +673,8 @@ static void cris_ide_input_data (ide_drive_t *drive, void *, unsigned int);
static void cris_ide_output_data (ide_drive_t *drive, void *, unsigned int);
static void cris_atapi_input_bytes(ide_drive_t *drive, void *, unsigned int);
static void cris_atapi_output_bytes(ide_drive_t *drive, void *, unsigned int);
-static int cris_dma_on (ide_drive_t *drive);
-static void cris_dma_off(ide_drive_t *drive)
+static void cris_dma_host_set(ide_drive_t *drive, int on)
{
}
@@ -755,13 +754,11 @@ static void cris_set_dma_mode(ide_drive_t *drive, const u8 speed)
cris_ide_set_speed(TYPE_DMA, 0, strobe, hold);
}
-void __init
-init_e100_ide (void)
+static int __init init_e100_ide(void)
{
hw_regs_t hw;
- int ide_offsets[IDE_NR_PORTS];
- int h;
- int i;
+ int ide_offsets[IDE_NR_PORTS], h, i;
+ u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
printk("ide: ETRAX FS built-in ATA DMA controller\n");
@@ -778,9 +775,11 @@ init_e100_ide (void)
ide_offsets,
0, 0, cris_ide_ack_intr,
ide_default_irq(0));
- ide_register_hw(&hw, NULL, 1, &hwif);
+ hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
if (hwif == NULL)
continue;
+ ide_init_port_data(hwif, hwif->index);
+ ide_init_port_hw(hwif, &hw);
hwif->mmio = 1;
hwif->chipset = ide_etrax100;
hwif->set_pio_mode = &cris_set_pio_mode;
@@ -789,6 +788,7 @@ init_e100_ide (void)
hwif->ata_output_data = &cris_ide_output_data;
hwif->atapi_input_bytes = &cris_atapi_input_bytes;
hwif->atapi_output_bytes = &cris_atapi_output_bytes;
+ hwif->dma_host_set = &cris_dma_host_set;
hwif->ide_dma_end = &cris_dma_end;
hwif->dma_setup = &cris_dma_setup;
hwif->dma_exec_cmd = &cris_dma_exec_cmd;
@@ -799,9 +799,6 @@ init_e100_ide (void)
hwif->OUTBSYNC = &cris_ide_outbsync;
hwif->INB = &cris_ide_inb;
hwif->INW = &cris_ide_inw;
- hwif->dma_host_off = &cris_dma_off;
- hwif->dma_host_on = &cris_dma_on;
- hwif->dma_off_quietly = &cris_dma_off;
hwif->cbl = ATA_CBL_PATA40;
hwif->host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
hwif->pio_mask = ATA_PIO4,
@@ -809,6 +806,8 @@ init_e100_ide (void)
hwif->drives[1].autotune = 1;
hwif->ultra_mask = cris_ultra_mask;
hwif->mwdma_mask = 0x07; /* Multiword DMA 0-2 */
+
+ idx[h] = hwif->index;
}
/* Reset pulse */
@@ -821,14 +820,12 @@ init_e100_ide (void)
cris_ide_set_speed(TYPE_PIO, ATA_PIO4_SETUP, ATA_PIO4_STROBE, ATA_PIO4_HOLD);
cris_ide_set_speed(TYPE_DMA, 0, ATA_DMA2_STROBE, ATA_DMA2_HOLD);
cris_ide_set_speed(TYPE_UDMA, ATA_UDMA2_CYC, ATA_UDMA2_DVS, 0);
-}
-static int cris_dma_on (ide_drive_t *drive)
-{
+ ide_device_add(idx);
+
return 0;
}
-
static cris_dma_descr_type mydescr __attribute__ ((__aligned__(16)));
/*
@@ -1060,3 +1057,5 @@ static void cris_dma_start(ide_drive_t *drive)
LED_DISK_READ(1);
}
}
+
+module_init(init_e100_ide);
diff --git a/drivers/ide/h8300/Makefile b/drivers/ide/h8300/Makefile
new file mode 100644
index 00000000000..5eba16f423f
--- /dev/null
+++ b/drivers/ide/h8300/Makefile
@@ -0,0 +1,2 @@
+
+obj-$(CONFIG_IDE_H8300) += ide-h8300.o
diff --git a/drivers/ide/h8300/ide-h8300.c b/drivers/ide/h8300/ide-h8300.c
index 4a49b5c59ac..4f6d0191cf6 100644
--- a/drivers/ide/h8300/ide-h8300.c
+++ b/drivers/ide/h8300/ide-h8300.c
@@ -84,11 +84,12 @@ static inline void hwif_setup(ide_hwif_t *hwif)
hwif->INSL = NULL;
}
-void __init h8300_ide_init(void)
+static int __init h8300_ide_init(void)
{
hw_regs_t hw;
ide_hwif_t *hwif;
- int idx;
+ int index;
+ u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
if (!request_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8, "ide-h8300"))
goto out_busy;
@@ -100,16 +101,28 @@ void __init h8300_ide_init(void)
hw_setup(&hw);
/* register if */
- idx = ide_register_hw(&hw, NULL, 1, &hwif);
- if (idx == -1) {
+ hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
+ if (hwif == NULL) {
printk(KERN_ERR "ide-h8300: IDE I/F register failed\n");
- return;
+ return -ENOENT;
}
+ index = hwif->index;
+ ide_init_port_data(hwif, index);
+ ide_init_port_hw(hwif, &hw);
hwif_setup(hwif);
- printk(KERN_INFO "ide%d: H8/300 generic IDE interface\n", idx);
- return;
+ printk(KERN_INFO "ide%d: H8/300 generic IDE interface\n", index);
+
+ idx[0] = index;
+
+ ide_device_add(idx);
+
+ return 0;
out_busy:
printk(KERN_ERR "ide-h8300: IDE I/F resource already used.\n");
+
+ return -EBUSY;
}
+
+module_init(h8300_ide_init);
diff --git a/drivers/ide/ide-acpi.c b/drivers/ide/ide-acpi.c
index e0bb0cfa7bd..e888fc35b27 100644
--- a/drivers/ide/ide-acpi.c
+++ b/drivers/ide/ide-acpi.c
@@ -386,7 +386,7 @@ static int taskfile_load_raw(ide_drive_t *drive,
/* convert gtf to IDE Taskfile */
memcpy(&args.tf_array[7], &gtf->tfa, 7);
- args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
+ args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
if (ide_noacpitfs) {
DEBPRINT("_GTF execution disabled\n");
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index d8fdd865dea..717e114ced5 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -201,7 +201,7 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
memset(&task, 0, sizeof(task));
task.tf_flags = IDE_TFLAG_NO_SELECT_MASK; /* FIXME? */
- task.tf_flags |= (IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE);
+ task.tf_flags |= (IDE_TFLAG_TF | IDE_TFLAG_DEVICE);
if (drive->select.b.lba) {
if (lba48) {
@@ -219,13 +219,8 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
tf->lbal = (u8) block;
tf->lbam = (u8)(block >> 8);
tf->lbah = (u8)(block >> 16);
-#ifdef DEBUG
- printk("%s: 0x%02x%02x 0x%02x%02x%02x%02x%02x%02x\n",
- drive->name, tf->hob_nsect, tf->nsect,
- tf->hob_lbah, tf->hob_lbam, tf->hob_lbal,
- tf->lbah, tf->lbam, tf->lbal);
-#endif
- task.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_OUT_HOB);
+
+ task.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB);
} else {
tf->nsect = nsectors & 0xff;
tf->lbal = block;
@@ -319,9 +314,9 @@ static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48)
else
tf->command = WIN_READ_NATIVE_MAX;
tf->device = ATA_LBA;
- args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
+ args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
if (lba48)
- args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_OUT_HOB);
+ args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB);
/* submit command request */
ide_no_data_taskfile(drive, &args);
@@ -358,9 +353,9 @@ static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48)
tf->command = WIN_SET_MAX;
}
tf->device |= ATA_LBA;
- args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
+ args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
if (lba48)
- args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_OUT_HOB);
+ args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB);
/* submit command request */
ide_no_data_taskfile(drive, &args);
/* if OK, compute maximum address value */
@@ -500,7 +495,7 @@ static int smart_enable(ide_drive_t *drive)
tf->lbam = SMART_LCYL_PASS;
tf->lbah = SMART_HCYL_PASS;
tf->command = WIN_SMART;
- args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
+ args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
return ide_no_data_taskfile(drive, &args);
}
@@ -515,7 +510,7 @@ static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd)
tf->lbam = SMART_LCYL_PASS;
tf->lbah = SMART_HCYL_PASS;
tf->command = WIN_SMART;
- args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
+ args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
args.data_phase = TASKFILE_IN;
(void) smart_enable(drive);
return ide_raw_taskfile(drive, &args, buf, 1);
@@ -625,8 +620,10 @@ static int set_multcount(ide_drive_t *drive, int arg)
if (drive->special.b.set_multmode)
return -EBUSY;
+
ide_init_drive_cmd (&rq);
- rq.cmd_type = REQ_TYPE_ATA_CMD;
+ rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
+
drive->mult_req = arg;
drive->special.b.set_multmode = 1;
(void) ide_do_drive_cmd (drive, &rq, ide_wait);
@@ -694,7 +691,7 @@ static int write_cache(ide_drive_t *drive, int arg)
args.tf.feature = arg ?
SETFEATURES_EN_WCACHE : SETFEATURES_DIS_WCACHE;
args.tf.command = WIN_SETFEATURES;
- args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
+ args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
err = ide_no_data_taskfile(drive, &args);
if (err == 0)
drive->wcache = arg;
@@ -714,7 +711,7 @@ static int do_idedisk_flushcache (ide_drive_t *drive)
args.tf.command = WIN_FLUSH_CACHE_EXT;
else
args.tf.command = WIN_FLUSH_CACHE;
- args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
+ args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
return ide_no_data_taskfile(drive, &args);
}
@@ -729,7 +726,7 @@ static int set_acoustic (ide_drive_t *drive, int arg)
args.tf.feature = arg ? SETFEATURES_EN_AAM : SETFEATURES_DIS_AAM;
args.tf.nsect = arg;
args.tf.command = WIN_SETFEATURES;
- args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
+ args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
ide_no_data_taskfile(drive, &args);
drive->acoustic = arg;
return 0;
@@ -766,7 +763,6 @@ static void idedisk_add_settings(ide_drive_t *drive)
ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL);
ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL);
ide_add_setting(drive, "address", SETTING_RW, TYPE_BYTE, 0, 2, 1, 1, &drive->addressing, set_lba_addressing);
- ide_add_setting(drive, "bswap", SETTING_READ, TYPE_BYTE, 0, 1, 1, 1, &drive->bswap, NULL);
ide_add_setting(drive, "multcount", SETTING_RW, TYPE_BYTE, 0, id->max_multsect, 1, 1, &drive->mult_count, set_multcount);
ide_add_setting(drive, "nowerr", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->nowerr, set_nowerr);
ide_add_setting(drive, "lun", SETTING_RW, TYPE_INT, 0, 7, 1, 1, &drive->lun, NULL);
@@ -975,6 +971,17 @@ static ide_driver_t idedisk_driver = {
#endif
};
+static int idedisk_set_doorlock(ide_drive_t *drive, int on)
+{
+ ide_task_t task;
+
+ memset(&task, 0, sizeof(task));
+ task.tf.command = on ? WIN_DOORLOCK : WIN_DOORUNLOCK;
+ task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
+
+ return ide_no_data_taskfile(drive, &task);
+}
+
static int idedisk_open(struct inode *inode, struct file *filp)
{
struct gendisk *disk = inode->i_bdev->bd_disk;
@@ -989,17 +996,13 @@ static int idedisk_open(struct inode *inode, struct file *filp)
idkp->openers++;
if (drive->removable && idkp->openers == 1) {
- ide_task_t args;
- memset(&args, 0, sizeof(ide_task_t));
- args.tf.command = WIN_DOORLOCK;
- args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
check_disk_change(inode->i_bdev);
/*
* Ignore the return code from door_lock,
* since the open() has already succeeded,
* and the door_lock is irrelevant at this point.
*/
- if (drive->doorlocking && ide_no_data_taskfile(drive, &args))
+ if (drive->doorlocking && idedisk_set_doorlock(drive, 1))
drive->doorlocking = 0;
}
return 0;
@@ -1015,11 +1018,7 @@ static int idedisk_release(struct inode *inode, struct file *filp)
ide_cacheflush_p(drive);
if (drive->removable && idkp->openers == 1) {
- ide_task_t args;
- memset(&args, 0, sizeof(ide_task_t));
- args.tf.command = WIN_DOORUNLOCK;
- args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
- if (drive->doorlocking && ide_no_data_taskfile(drive, &args))
+ if (drive->doorlocking && idedisk_set_doorlock(drive, 0))
drive->doorlocking = 0;
}
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index 18c78ad2b31..5bf32038dc4 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -153,13 +153,7 @@ ide_startstop_t ide_dma_intr (ide_drive_t *drive)
if (!dma_stat) {
struct request *rq = HWGROUP(drive)->rq;
- if (rq->rq_disk) {
- ide_driver_t *drv;
-
- drv = *(ide_driver_t **)rq->rq_disk->private_data;
- drv->end_request(drive, 1, rq->nr_sectors);
- } else
- ide_end_request(drive, 1, rq->nr_sectors);
+ task_end_request(drive, rq, stat);
return ide_stopped;
}
printk(KERN_ERR "%s: dma_intr: bad DMA status (dma_stat=%x)\n",
@@ -408,23 +402,29 @@ static int dma_timer_expiry (ide_drive_t *drive)
}
/**
- * ide_dma_host_off - Generic DMA kill
+ * ide_dma_host_set - Enable/disable DMA on a host
* @drive: drive to control
*
- * Perform the generic IDE controller DMA off operation. This
- * works for most IDE bus mastering controllers
+ * Enable/disable DMA on an IDE controller following generic
+ * bus-mastering IDE controller behaviour.
*/
-void ide_dma_host_off(ide_drive_t *drive)
+void ide_dma_host_set(ide_drive_t *drive, int on)
{
ide_hwif_t *hwif = HWIF(drive);
u8 unit = (drive->select.b.unit & 0x01);
u8 dma_stat = hwif->INB(hwif->dma_status);
- hwif->OUTB((dma_stat & ~(1<<(5+unit))), hwif->dma_status);
+ if (on)
+ dma_stat |= (1 << (5 + unit));
+ else
+ dma_stat &= ~(1 << (5 + unit));
+
+ hwif->OUTB(dma_stat, hwif->dma_status);
}
-EXPORT_SYMBOL(ide_dma_host_off);
+EXPORT_SYMBOL_GPL(ide_dma_host_set);
+#endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
/**
* ide_dma_off_quietly - Generic DMA kill
@@ -438,11 +438,10 @@ void ide_dma_off_quietly(ide_drive_t *drive)
drive->using_dma = 0;
ide_toggle_bounce(drive, 0);
- drive->hwif->dma_host_off(drive);
+ drive->hwif->dma_host_set(drive, 0);
}
EXPORT_SYMBOL(ide_dma_off_quietly);
-#endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
/**
* ide_dma_off - disable DMA on a device
@@ -455,52 +454,29 @@ EXPORT_SYMBOL(ide_dma_off_quietly);
void ide_dma_off(ide_drive_t *drive)
{
printk(KERN_INFO "%s: DMA disabled\n", drive->name);
- drive->hwif->dma_off_quietly(drive);
+ ide_dma_off_quietly(drive);
}
EXPORT_SYMBOL(ide_dma_off);
-#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
-/**
- * ide_dma_host_on - Enable DMA on a host
- * @drive: drive to enable for DMA
- *
- * Enable DMA on an IDE controller following generic bus mastering
- * IDE controller behaviour
- */
-
-void ide_dma_host_on(ide_drive_t *drive)
-{
- if (drive->using_dma) {
- ide_hwif_t *hwif = HWIF(drive);
- u8 unit = (drive->select.b.unit & 0x01);
- u8 dma_stat = hwif->INB(hwif->dma_status);
-
- hwif->OUTB((dma_stat|(1<<(5+unit))), hwif->dma_status);
- }
-}
-
-EXPORT_SYMBOL(ide_dma_host_on);
-
/**
- * __ide_dma_on - Enable DMA on a device
+ * ide_dma_on - Enable DMA on a device
* @drive: drive to enable DMA on
*
* Enable IDE DMA for a device on this IDE controller.
*/
-
-int __ide_dma_on (ide_drive_t *drive)
+
+void ide_dma_on(ide_drive_t *drive)
{
drive->using_dma = 1;
ide_toggle_bounce(drive, 1);
- drive->hwif->dma_host_on(drive);
-
- return 0;
+ drive->hwif->dma_host_set(drive, 1);
}
-EXPORT_SYMBOL(__ide_dma_on);
+EXPORT_SYMBOL(ide_dma_on);
+#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
/**
* ide_dma_setup - begin a DMA phase
* @drive: target device
@@ -755,6 +731,7 @@ EXPORT_SYMBOL_GPL(ide_find_dma_mode);
static int ide_tune_dma(ide_drive_t *drive)
{
+ ide_hwif_t *hwif = drive->hwif;
u8 speed;
if (noautodma || drive->nodma || (drive->id->capability & 1) == 0)
@@ -767,15 +744,21 @@ static int ide_tune_dma(ide_drive_t *drive)
if (ide_id_dma_bug(drive))
return 0;
- if (drive->hwif->host_flags & IDE_HFLAG_TRUST_BIOS_FOR_DMA)
+ if (hwif->host_flags & IDE_HFLAG_TRUST_BIOS_FOR_DMA)
return config_drive_for_dma(drive);
speed = ide_max_dma_mode(drive);
- if (!speed)
- return 0;
+ if (!speed) {
+ /* is this really correct/needed? */
+ if ((hwif->host_flags & IDE_HFLAG_CY82C693) &&
+ ide_dma_good_drive(drive))
+ return 1;
+ else
+ return 0;
+ }
- if (drive->hwif->host_flags & IDE_HFLAG_NO_SET_MODE)
+ if (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)
return 0;
if (ide_set_dma_mode(drive, speed))
@@ -820,7 +803,6 @@ err_out:
int ide_set_dma(ide_drive_t *drive)
{
- ide_hwif_t *hwif = drive->hwif;
int rc;
/*
@@ -829,13 +811,15 @@ int ide_set_dma(ide_drive_t *drive)
* things, if not checked and cleared.
* PARANOIA!!!
*/
- hwif->dma_off_quietly(drive);
+ ide_dma_off_quietly(drive);
rc = ide_dma_check(drive);
if (rc)
return rc;
- return hwif->ide_dma_on(drive);
+ ide_dma_on(drive);
+
+ return 0;
}
#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
@@ -972,14 +956,8 @@ void ide_setup_dma(ide_hwif_t *hwif, unsigned long base, unsigned num_ports)
if (!(hwif->dma_prdtable))
hwif->dma_prdtable = (hwif->dma_base + 4);
- if (!hwif->dma_off_quietly)
- hwif->dma_off_quietly = &ide_dma_off_quietly;
- if (!hwif->dma_host_off)
- hwif->dma_host_off = &ide_dma_host_off;
- if (!hwif->ide_dma_on)
- hwif->ide_dma_on = &__ide_dma_on;
- if (!hwif->dma_host_on)
- hwif->dma_host_on = &ide_dma_host_on;
+ if (!hwif->dma_host_set)
+ hwif->dma_host_set = &ide_dma_host_set;
if (!hwif->dma_setup)
hwif->dma_setup = &ide_dma_setup;
if (!hwif->dma_exec_cmd)
diff --git a/drivers/ide/ide-generic.c b/drivers/ide/ide-generic.c
index 0f72b98d727..bb30c29f6ec 100644
--- a/drivers/ide/ide-generic.c
+++ b/drivers/ide/ide-generic.c
@@ -14,10 +14,16 @@
static int __init ide_generic_init(void)
{
+ u8 idx[MAX_HWIFS];
+ int i;
+
if (ide_hwifs[0].io_ports[IDE_DATA_OFFSET])
ide_get_lock(NULL, NULL); /* for atari only */
- (void)ideprobe_init();
+ for (i = 0; i < MAX_HWIFS; i++)
+ idx[i] = ide_hwifs[i].present ? 0xff : i;
+
+ ide_device_add_all(idx);
if (ide_hwifs[0].io_ports[IDE_DATA_OFFSET])
ide_release_lock(); /* for atari only */
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 2711b5a6962..6f8f544392a 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -75,7 +75,7 @@ static int __ide_end_request(ide_drive_t *drive, struct request *rq,
*/
if (drive->state == DMA_PIO_RETRY && drive->retry_pio <= 3) {
drive->state = 0;
- HWGROUP(drive)->hwif->ide_dma_on(drive);
+ ide_dma_on(drive);
}
if (!end_that_request_chunk(rq, uptodate, nr_bytes)) {
@@ -219,7 +219,7 @@ static ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *
* we could be smarter and check for current xfer_speed
* in struct drive etc...
*/
- if (drive->hwif->ide_dma_on == NULL)
+ if (drive->hwif->dma_host_set == NULL)
break;
/*
* TODO: respect ->using_dma setting
@@ -231,7 +231,7 @@ static ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *
return ide_stopped;
out_do_tf:
- args->tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
+ args->tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
args->data_phase = TASKFILE_NO_DATA;
return do_rw_taskfile(drive, args);
}
@@ -354,7 +354,6 @@ void ide_tf_read(ide_drive_t *drive, ide_task_t *task)
void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err)
{
- ide_hwif_t *hwif = HWIF(drive);
unsigned long flags;
struct request *rq;
@@ -362,17 +361,7 @@ void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err)
rq = HWGROUP(drive)->rq;
spin_unlock_irqrestore(&ide_lock, flags);
- if (rq->cmd_type == REQ_TYPE_ATA_CMD) {
- u8 *args = (u8 *) rq->buffer;
- if (rq->errors == 0)
- rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
-
- if (args) {
- args[0] = stat;
- args[1] = err;
- args[2] = hwif->INB(IDE_NSECTOR_REG);
- }
- } else if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
+ if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
ide_task_t *args = (ide_task_t *) rq->special;
if (rq->errors == 0)
rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
@@ -383,10 +372,6 @@ void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err)
tf->error = err;
tf->status = stat;
- args->tf_flags |= (IDE_TFLAG_IN_TF|IDE_TFLAG_IN_DEVICE);
- if (args->tf_flags & IDE_TFLAG_LBA48)
- args->tf_flags |= IDE_TFLAG_IN_HOB;
-
ide_tf_read(drive, args);
}
} else if (blk_pm_request(rq)) {
@@ -626,42 +611,6 @@ ide_startstop_t ide_abort(ide_drive_t *drive, const char *msg)
return __ide_abort(drive, rq);
}
-/**
- * drive_cmd_intr - drive command completion interrupt
- * @drive: drive the completion interrupt occurred on
- *
- * drive_cmd_intr() is invoked on completion of a special DRIVE_CMD.
- * We do any necessary data reading and then wait for the drive to
- * go non busy. At that point we may read the error data and complete
- * the request
- */
-
-static ide_startstop_t drive_cmd_intr (ide_drive_t *drive)
-{
- struct request *rq = HWGROUP(drive)->rq;
- ide_hwif_t *hwif = HWIF(drive);
- u8 *args = (u8 *) rq->buffer;
- u8 stat = hwif->INB(IDE_STATUS_REG);
- int retries = 10;
-
- local_irq_enable_in_hardirq();
- if (rq->cmd_type == REQ_TYPE_ATA_CMD &&
- (stat & DRQ_STAT) && args && args[3]) {
- u8 io_32bit = drive->io_32bit;
- drive->io_32bit = 0;
- hwif->ata_input_data(drive, &args[4], args[3] * SECTOR_WORDS);
- drive->io_32bit = io_32bit;
- while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--)
- udelay(100);
- }
-
- if (!OK_STAT(stat, READY_STAT, BAD_STAT))
- return ide_error(drive, "drive_cmd", stat);
- /* calls ide_end_drive_cmd */
- ide_end_drive_cmd(drive, stat, hwif->INB(IDE_ERROR_REG));
- return ide_stopped;
-}
-
static void ide_tf_set_specify_cmd(ide_drive_t *drive, struct ide_taskfile *tf)
{
tf->nsect = drive->sect;
@@ -710,7 +659,7 @@ static ide_startstop_t ide_disk_special(ide_drive_t *drive)
return ide_stopped;
}
- args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE |
+ args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE |
IDE_TFLAG_CUSTOM_HANDLER;
do_rw_taskfile(drive, &args);
@@ -787,7 +736,7 @@ static ide_startstop_t do_special (ide_drive_t *drive)
if (hwif->host_flags & IDE_HFLAG_SET_PIO_MODE_KEEP_DMA) {
if (keep_dma)
- hwif->ide_dma_on(drive);
+ ide_dma_on(drive);
}
}
@@ -847,16 +796,9 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
struct request *rq)
{
ide_hwif_t *hwif = HWIF(drive);
- u8 *args = rq->buffer;
- ide_task_t ltask;
- struct ide_taskfile *tf = &ltask.tf;
-
- if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
- ide_task_t *task = rq->special;
-
- if (task == NULL)
- goto done;
+ ide_task_t *task = rq->special;
+ if (task) {
hwif->data_phase = task->data_phase;
switch (hwif->data_phase) {
@@ -873,33 +815,6 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
return do_rw_taskfile(drive, task);
}
- if (args == NULL)
- goto done;
-
- memset(&ltask, 0, sizeof(ltask));
- if (rq->cmd_type == REQ_TYPE_ATA_CMD) {
-#ifdef DEBUG
- printk("%s: DRIVE_CMD\n", drive->name);
-#endif
- tf->feature = args[2];
- if (args[0] == WIN_SMART) {
- tf->nsect = args[3];
- tf->lbal = args[1];
- tf->lbam = 0x4f;
- tf->lbah = 0xc2;
- ltask.tf_flags = IDE_TFLAG_OUT_TF;
- } else {
- tf->nsect = args[1];
- ltask.tf_flags = IDE_TFLAG_OUT_FEATURE |
- IDE_TFLAG_OUT_NSECT;
- }
- }
- tf->command = args[0];
- ide_tf_load(drive, &ltask);
- ide_execute_command(drive, args[0], &drive_cmd_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
-
-done:
/*
* NULL is actually a valid way of waiting for
* all current requests to be flushed from the queue.
@@ -939,8 +854,7 @@ static void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
if (rc)
printk(KERN_WARNING "%s: bus not ready on wakeup\n", drive->name);
SELECT_DRIVE(drive);
- if (IDE_CONTROL_REG)
- HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
+ ide_set_irq(drive, 1);
rc = ide_wait_not_busy(HWIF(drive), 100000);
if (rc)
printk(KERN_WARNING "%s: drive not ready on wakeup\n", drive->name);
@@ -1004,8 +918,7 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
if (drive->current_speed == 0xff)
ide_config_drive_speed(drive, drive->desired_speed);
- if (rq->cmd_type == REQ_TYPE_ATA_CMD ||
- rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
+ if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
return execute_drive_cmd(drive, rq);
else if (blk_pm_request(rq)) {
struct request_pm_state *pm = rq->data;
@@ -1213,15 +1126,13 @@ static void ide_do_request (ide_hwgroup_t *hwgroup, int masked_irq)
}
again:
hwif = HWIF(drive);
- if (hwgroup->hwif->sharing_irq &&
- hwif != hwgroup->hwif &&
- hwif->io_ports[IDE_CONTROL_OFFSET]) {
+ if (hwgroup->hwif->sharing_irq && hwif != hwgroup->hwif) {
/*
* set nIEN for previous hwif, drives in the
* quirk_list may not like intr setups/cleanups
*/
if (drive->quirk_list != 1)
- hwif->OUTB(drive->ctl | 2, IDE_CONTROL_REG);
+ ide_set_irq(drive, 0);
}
hwgroup->hwif = hwif;
hwgroup->drive = drive;
@@ -1334,7 +1245,7 @@ static ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error)
*/
drive->retry_pio++;
drive->state = DMA_PIO_RETRY;
- hwif->dma_off_quietly(drive);
+ ide_dma_off_quietly(drive);
/*
* un-busy drive etc (hwgroup->busy is cleared on return) and
@@ -1679,7 +1590,6 @@ irqreturn_t ide_intr (int irq, void *dev_id)
void ide_init_drive_cmd (struct request *rq)
{
memset(rq, 0, sizeof(*rq));
- rq->cmd_type = REQ_TYPE_ATA_CMD;
rq->ref_count = 1;
}
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index c97c0719ddf..e2a7e95e163 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -619,7 +619,7 @@ no_80w:
int ide_ata66_check (ide_drive_t *drive, ide_task_t *args)
{
if (args->tf.command == WIN_SETFEATURES &&
- args->tf.lbal > XFER_UDMA_2 &&
+ args->tf.nsect > XFER_UDMA_2 &&
args->tf.feature == SETFEATURES_XFER) {
if (eighty_ninty_three(drive) == 0) {
printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot "
@@ -639,7 +639,7 @@ int ide_ata66_check (ide_drive_t *drive, ide_task_t *args)
int set_transfer (ide_drive_t *drive, ide_task_t *args)
{
if (args->tf.command == WIN_SETFEATURES &&
- args->tf.lbal >= XFER_SW_DMA_0 &&
+ args->tf.nsect >= XFER_SW_DMA_0 &&
args->tf.feature == SETFEATURES_XFER &&
(drive->id->dma_ultra ||
drive->id->dma_mword ||
@@ -688,8 +688,7 @@ int ide_driveid_update(ide_drive_t *drive)
*/
SELECT_MASK(drive, 1);
- if (IDE_CONTROL_REG)
- hwif->OUTB(drive->ctl,IDE_CONTROL_REG);
+ ide_set_irq(drive, 1);
msleep(50);
hwif->OUTB(WIN_IDENTIFY, IDE_COMMAND_REG);
timeout = jiffies + WAIT_WORSTCASE;
@@ -742,8 +741,8 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
// msleep(50);
#ifdef CONFIG_BLK_DEV_IDEDMA
- if (hwif->ide_dma_on) /* check if host supports DMA */
- hwif->dma_host_off(drive);
+ if (hwif->dma_host_set) /* check if host supports DMA */
+ hwif->dma_host_set(drive, 0);
#endif
/* Skip setting PIO flow-control modes on pre-EIDE drives */
@@ -772,13 +771,12 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
SELECT_DRIVE(drive);
SELECT_MASK(drive, 0);
udelay(1);
- if (IDE_CONTROL_REG)
- hwif->OUTB(drive->ctl | 2, IDE_CONTROL_REG);
+ ide_set_irq(drive, 0);
hwif->OUTB(speed, IDE_NSECTOR_REG);
hwif->OUTB(SETFEATURES_XFER, IDE_FEATURE_REG);
hwif->OUTBSYNC(drive, WIN_SETFEATURES, IDE_COMMAND_REG);
- if ((IDE_CONTROL_REG) && (drive->quirk_list == 2))
- hwif->OUTB(drive->ctl, IDE_CONTROL_REG);
+ if (drive->quirk_list == 2)
+ ide_set_irq(drive, 1);
error = __ide_wait_stat(drive, drive->ready_stat,
BUSY_STAT|DRQ_STAT|ERR_STAT,
@@ -799,10 +797,11 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
skip:
#ifdef CONFIG_BLK_DEV_IDEDMA
- if (speed >= XFER_SW_DMA_0)
- hwif->dma_host_on(drive);
- else if (hwif->ide_dma_on) /* check if host supports DMA */
- hwif->dma_off_quietly(drive);
+ if ((speed >= XFER_SW_DMA_0 || (hwif->host_flags & IDE_HFLAG_VDMA)) &&
+ drive->using_dma)
+ hwif->dma_host_set(drive, 1);
+ else if (hwif->dma_host_set) /* check if host supports DMA */
+ ide_dma_off_quietly(drive);
#endif
switch(speed) {
@@ -1012,10 +1011,10 @@ static void check_dma_crc(ide_drive_t *drive)
{
#ifdef CONFIG_BLK_DEV_IDEDMA
if (drive->crc_count) {
- drive->hwif->dma_off_quietly(drive);
+ ide_dma_off_quietly(drive);
ide_set_xfer_rate(drive, ide_auto_reduce_xfer(drive));
if (drive->current_speed >= XFER_SW_DMA_0)
- (void) HWIF(drive)->ide_dma_on(drive);
+ ide_dma_on(drive);
} else
ide_dma_off(drive);
#endif
diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index a3bd8e8ed6b..9b44fbdfe41 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -454,8 +454,7 @@ int ide_set_xfer_rate(ide_drive_t *drive, u8 rate)
static void ide_dump_opcode(ide_drive_t *drive)
{
struct request *rq;
- u8 opcode = 0;
- int found = 0;
+ ide_task_t *task = NULL;
spin_lock(&ide_lock);
rq = NULL;
@@ -464,25 +463,15 @@ static void ide_dump_opcode(ide_drive_t *drive)
spin_unlock(&ide_lock);
if (!rq)
return;
- if (rq->cmd_type == REQ_TYPE_ATA_CMD) {
- char *args = rq->buffer;
- if (args) {
- opcode = args[0];
- found = 1;
- }
- } else if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
- ide_task_t *args = rq->special;
- if (args) {
- opcode = args->tf.command;
- found = 1;
- }
- }
+
+ if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
+ task = rq->special;
printk("ide: failed opcode was: ");
- if (!found)
- printk("unknown\n");
+ if (task == NULL)
+ printk(KERN_CONT "unknown\n");
else
- printk("0x%02x\n", opcode);
+ printk(KERN_CONT "0x%02x\n", task->tf.command);
}
u64 ide_get_lba_addr(struct ide_taskfile *tf, int lba48)
diff --git a/drivers/ide/ide-pnp.c b/drivers/ide/ide-pnp.c
index e245521af7b..cbbb0f75be9 100644
--- a/drivers/ide/ide-pnp.c
+++ b/drivers/ide/ide-pnp.c
@@ -31,7 +31,6 @@ static int idepnp_probe(struct pnp_dev * dev, const struct pnp_device_id *dev_id
{
hw_regs_t hw;
ide_hwif_t *hwif;
- int index;
if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
return -1;
@@ -41,11 +40,19 @@ static int idepnp_probe(struct pnp_dev * dev, const struct pnp_device_id *dev_id
pnp_port_start(dev, 1));
hw.irq = pnp_irq(dev, 0);
- index = ide_register_hw(&hw, NULL, 1, &hwif);
+ hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
+ if (hwif) {
+ u8 index = hwif->index;
+ u8 idx[4] = { index, 0xff, 0xff, 0xff };
+
+ ide_init_port_data(hwif, index);
+ ide_init_port_hw(hwif, &hw);
- if (index != -1) {
- printk(KERN_INFO "ide%d: generic PnP IDE interface\n", index);
+ printk(KERN_INFO "ide%d: generic PnP IDE interface\n", index);
pnp_set_drvdata(dev,hwif);
+
+ ide_device_add(idx);
+
return 0;
}
@@ -68,12 +75,15 @@ static struct pnp_driver idepnp_driver = {
.remove = idepnp_remove,
};
-void __init pnpide_init(void)
+static int __init pnpide_init(void)
{
- pnp_register_driver(&idepnp_driver);
+ return pnp_register_driver(&idepnp_driver);
}
-void __exit pnpide_exit(void)
+static void __exit pnpide_exit(void)
{
pnp_unregister_driver(&idepnp_driver);
}
+
+module_init(pnpide_init);
+module_exit(pnpide_exit);
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 0379d1f697c..edf650b20c6 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -235,9 +235,6 @@ static inline void do_identify (ide_drive_t *drive, u8 cmd)
drive->media = ide_disk;
printk("%s DISK drive\n", (id->config == 0x848a) ? "CFA" : "ATA" );
- if (hwif->quirkproc)
- drive->quirk_list = hwif->quirkproc(drive);
-
return;
err_misc:
@@ -353,22 +350,19 @@ static int try_to_identify (ide_drive_t *drive, u8 cmd)
* the irq handler isn't expecting.
*/
if (IDE_CONTROL_REG) {
- u8 ctl = drive->ctl | 2;
if (!hwif->irq) {
autoprobe = 1;
cookie = probe_irq_on();
- /* enable device irq */
- ctl &= ~2;
}
- hwif->OUTB(ctl, IDE_CONTROL_REG);
+ ide_set_irq(drive, autoprobe);
}
retval = actual_try_to_identify(drive, cmd);
if (autoprobe) {
int irq;
- /* mask device irq */
- hwif->OUTB(drive->ctl|2, IDE_CONTROL_REG);
+
+ ide_set_irq(drive, 0);
/* clear drive IRQ */
(void) hwif->INB(IDE_STATUS_REG);
udelay(5);
@@ -388,6 +382,20 @@ static int try_to_identify (ide_drive_t *drive, u8 cmd)
return retval;
}
+static int ide_busy_sleep(ide_hwif_t *hwif)
+{
+ unsigned long timeout = jiffies + WAIT_WORSTCASE;
+ u8 stat;
+
+ do {
+ msleep(50);
+ stat = hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);
+ if ((stat & BUSY_STAT) == 0)
+ return 0;
+ } while (time_before(jiffies, timeout));
+
+ return 1;
+}
/**
* do_probe - probe an IDE device
@@ -456,7 +464,6 @@ static int do_probe (ide_drive_t *drive, u8 cmd)
if ((rc == 1 && cmd == WIN_PIDENTIFY) &&
((drive->autotune == IDE_TUNE_DEFAULT) ||
(drive->autotune == IDE_TUNE_AUTO))) {
- unsigned long timeout;
printk("%s: no response (status = 0x%02x), "
"resetting drive\n", drive->name,
hwif->INB(IDE_STATUS_REG));
@@ -464,10 +471,7 @@ static int do_probe (ide_drive_t *drive, u8 cmd)
hwif->OUTB(drive->select.all, IDE_SELECT_REG);
msleep(50);
hwif->OUTB(WIN_SRST, IDE_COMMAND_REG);
- timeout = jiffies;
- while (((hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) &&
- time_before(jiffies, timeout + WAIT_WORSTCASE))
- msleep(50);
+ (void)ide_busy_sleep(hwif);
rc = try_to_identify(drive, cmd);
}
if (rc == 1)
@@ -495,20 +499,16 @@ static int do_probe (ide_drive_t *drive, u8 cmd)
static void enable_nest (ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
- unsigned long timeout;
printk("%s: enabling %s -- ", hwif->name, drive->id->model);
SELECT_DRIVE(drive);
msleep(50);
hwif->OUTB(EXABYTE_ENABLE_NEST, IDE_COMMAND_REG);
- timeout = jiffies + WAIT_WORSTCASE;
- do {
- if (time_after(jiffies, timeout)) {
- printk("failed (timeout)\n");
- return;
- }
- msleep(50);
- } while ((hwif->INB(IDE_STATUS_REG)) & BUSY_STAT);
+
+ if (ide_busy_sleep(hwif)) {
+ printk(KERN_CONT "failed (timeout)\n");
+ return;
+ }
msleep(50);
@@ -656,8 +656,7 @@ static int wait_hwif_ready(ide_hwif_t *hwif)
/* Ignore disks that we will not probe for later. */
if (!drive->noprobe || drive->present) {
SELECT_DRIVE(drive);
- if (IDE_CONTROL_REG)
- hwif->OUTB(drive->ctl, IDE_CONTROL_REG);
+ ide_set_irq(drive, 1);
mdelay(2);
rc = ide_wait_not_busy(hwif, 35000);
if (rc)
@@ -676,19 +675,18 @@ out:
/**
* ide_undecoded_slave - look for bad CF adapters
- * @hwif: interface
+ * @drive1: drive
*
* Analyse the drives on the interface and attempt to decide if we
* have the same drive viewed twice. This occurs with crap CF adapters
* and PCMCIA sometimes.
*/
-void ide_undecoded_slave(ide_hwif_t *hwif)
+void ide_undecoded_slave(ide_drive_t *drive1)
{
- ide_drive_t *drive0 = &hwif->drives[0];
- ide_drive_t *drive1 = &hwif->drives[1];
+ ide_drive_t *drive0 = &drive1->hwif->drives[0];
- if (drive0->present == 0 || drive1->present == 0)
+ if ((drive1->dn & 1) == 0 || drive0->present == 0)
return;
/* If the models don't match they are not the same product */
@@ -791,18 +789,11 @@ static void probe_hwif(ide_hwif_t *hwif)
}
}
if (hwif->io_ports[IDE_CONTROL_OFFSET] && hwif->reset) {
- unsigned long timeout = jiffies + WAIT_WORSTCASE;
- u8 stat;
-
printk(KERN_WARNING "%s: reset\n", hwif->name);
hwif->OUTB(12, hwif->io_ports[IDE_CONTROL_OFFSET]);
udelay(10);
hwif->OUTB(8, hwif->io_ports[IDE_CONTROL_OFFSET]);
- do {
- msleep(50);
- stat = hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);
- } while ((stat & BUSY_STAT) && time_after(timeout, jiffies));
-
+ (void)ide_busy_sleep(hwif);
}
local_irq_restore(flags);
/*
@@ -817,8 +808,12 @@ static void probe_hwif(ide_hwif_t *hwif)
return;
}
- if (hwif->fixup)
- hwif->fixup(hwif);
+ for (unit = 0; unit < MAX_DRIVES; unit++) {
+ ide_drive_t *drive = &hwif->drives[unit];
+
+ if (drive->present && hwif->quirkproc)
+ hwif->quirkproc(drive);
+ }
for (unit = 0; unit < MAX_DRIVES; ++unit) {
ide_drive_t *drive = &hwif->drives[unit];
@@ -833,7 +828,7 @@ static void probe_hwif(ide_hwif_t *hwif)
drive->nice1 = 1;
- if (hwif->ide_dma_on)
+ if (hwif->dma_host_set)
ide_set_dma(drive);
}
}
@@ -848,25 +843,6 @@ static void probe_hwif(ide_hwif_t *hwif)
}
}
-static int hwif_init(ide_hwif_t *hwif);
-static void hwif_register_devices(ide_hwif_t *hwif);
-
-static int probe_hwif_init(ide_hwif_t *hwif)
-{
- probe_hwif(hwif);
-
- if (!hwif_init(hwif)) {
- printk(KERN_INFO "%s: failed to initialize IDE interface\n",
- hwif->name);
- return -1;
- }
-
- if (hwif->present)
- hwif_register_devices(hwif);
-
- return 0;
-}
-
#if MAX_HWIFS > 1
/*
* save_match() is used to simplify logic in init_irq() below.
@@ -1359,54 +1335,63 @@ static void hwif_register_devices(ide_hwif_t *hwif)
}
}
-int ideprobe_init (void)
+int ide_device_add_all(u8 *idx)
{
- unsigned int index;
- int probe[MAX_HWIFS];
-
- memset(probe, 0, MAX_HWIFS * sizeof(int));
- for (index = 0; index < MAX_HWIFS; ++index)
- probe[index] = !ide_hwifs[index].present;
-
- for (index = 0; index < MAX_HWIFS; ++index)
- if (probe[index])
- probe_hwif(&ide_hwifs[index]);
- for (index = 0; index < MAX_HWIFS; ++index)
- if (probe[index])
- hwif_init(&ide_hwifs[index]);
- for (index = 0; index < MAX_HWIFS; ++index) {
- if (probe[index]) {
- ide_hwif_t *hwif = &ide_hwifs[index];
- if (!hwif->present)
- continue;
- if (hwif->chipset == ide_unknown || hwif->chipset == ide_forced)
- hwif->chipset = ide_generic;
- hwif_register_devices(hwif);
+ ide_hwif_t *hwif;
+ int i, rc = 0;
+
+ for (i = 0; i < MAX_HWIFS; i++) {
+ if (idx[i] == 0xff)
+ continue;
+
+ probe_hwif(&ide_hwifs[idx[i]]);
+ }
+
+ for (i = 0; i < MAX_HWIFS; i++) {
+ if (idx[i] == 0xff)
+ continue;
+
+ hwif = &ide_hwifs[idx[i]];
+
+ if (hwif_init(hwif) == 0) {
+ printk(KERN_INFO "%s: failed to initialize IDE "
+ "interface\n", hwif->name);
+ rc = -1;
+ continue;
}
}
- for (index = 0; index < MAX_HWIFS; ++index)
- if (probe[index])
- ide_proc_register_port(&ide_hwifs[index]);
- return 0;
-}
-EXPORT_SYMBOL_GPL(ideprobe_init);
+ for (i = 0; i < MAX_HWIFS; i++) {
+ if (idx[i] == 0xff)
+ continue;
-int ide_device_add(u8 idx[4])
-{
- int i, rc = 0;
+ hwif = &ide_hwifs[idx[i]];
- for (i = 0; i < 4; i++) {
- if (idx[i] != 0xff)
- rc |= probe_hwif_init(&ide_hwifs[idx[i]]);
+ if (hwif->present) {
+ if (hwif->chipset == ide_unknown ||
+ hwif->chipset == ide_forced)
+ hwif->chipset = ide_generic;
+ hwif_register_devices(hwif);
+ }
}
- for (i = 0; i < 4; i++) {
+ for (i = 0; i < MAX_HWIFS; i++) {
if (idx[i] != 0xff)
ide_proc_register_port(&ide_hwifs[idx[i]]);
}
return rc;
}
+EXPORT_SYMBOL_GPL(ide_device_add_all);
+
+int ide_device_add(u8 idx[4])
+{
+ u8 idx_all[MAX_HWIFS];
+ int i;
+ for (i = 0; i < MAX_HWIFS; i++)
+ idx_all[i] = (i < 4) ? idx[i] : 0xff;
+
+ return ide_device_add_all(idx_all);
+}
EXPORT_SYMBOL_GPL(ide_device_add);
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index a4007d30da5..aa663e7f46f 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -346,14 +346,20 @@ static int ide_write_setting(ide_drive_t *drive, ide_settings_t *setting, int va
static int set_xfer_rate (ide_drive_t *drive, int arg)
{
+ ide_task_t task;
int err;
if (arg < 0 || arg > 70)
return -EINVAL;
- err = ide_wait_cmd(drive,
- WIN_SETFEATURES, (u8) arg,
- SETFEATURES_XFER, 0, NULL);
+ memset(&task, 0, sizeof(task));
+ task.tf.command = WIN_SETFEATURES;
+ task.tf.feature = SETFEATURES_XFER;
+ task.tf.nsect = (u8)arg;
+ task.tf_flags = IDE_TFLAG_OUT_FEATURE | IDE_TFLAG_OUT_NSECT |
+ IDE_TFLAG_IN_NSECT;
+
+ err = ide_no_data_taskfile(drive, &task);
if (!err && arg) {
ide_set_xfer_rate(drive, (u8) arg);
diff --git a/drivers/ide/ide-scan-pci.c b/drivers/ide/ide-scan-pci.c
new file mode 100644
index 00000000000..7ffa332d77c
--- /dev/null
+++ b/drivers/ide/ide-scan-pci.c
@@ -0,0 +1,121 @@
+/*
+ * support for probing IDE PCI devices in the PCI bus order
+ *
+ * Copyright (c) 1998-2000 Andre Hedrick <andre@linux-ide.org>
+ * Copyright (c) 1995-1998 Mark Lord
+ *
+ * May be copied or modified under the terms of the GNU General Public License
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/ide.h>
+
+/*
+ * Module interfaces
+ */
+
+static int pre_init = 1; /* Before first ordered IDE scan */
+static LIST_HEAD(ide_pci_drivers);
+
+/*
+ * __ide_pci_register_driver - attach IDE driver
+ * @driver: pci driver
+ * @module: owner module of the driver
+ *
+ * Registers a driver with the IDE layer. The IDE layer arranges that
+ * boot time setup is done in the expected device order and then
+ * hands the controllers off to the core PCI code to do the rest of
+ * the work.
+ *
+ * Returns are the same as for pci_register_driver
+ */
+
+int __ide_pci_register_driver(struct pci_driver *driver, struct module *module,
+ const char *mod_name)
+{
+ if (!pre_init)
+ return __pci_register_driver(driver, module, mod_name);
+ driver->driver.owner = module;
+ list_add_tail(&driver->node, &ide_pci_drivers);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(__ide_pci_register_driver);
+
+/**
+ * ide_scan_pcidev - find an IDE driver for a device
+ * @dev: PCI device to check
+ *
+ * Look for an IDE driver to handle the device we are considering.
+ * This is only used during boot up to get the ordering correct. After
+ * boot up the pci layer takes over the job.
+ */
+
+static int __init ide_scan_pcidev(struct pci_dev *dev)
+{
+ struct list_head *l;
+ struct pci_driver *d;
+
+ list_for_each(l, &ide_pci_drivers) {
+ d = list_entry(l, struct pci_driver, node);
+ if (d->id_table) {
+ const struct pci_device_id *id =
+ pci_match_id(d->id_table, dev);
+
+ if (id != NULL && d->probe(dev, id) >= 0) {
+ dev->driver = d;
+ pci_dev_get(dev);
+ return 1;
+ }
+ }
+ }
+ return 0;
+}
+
+/**
+ * ide_scan_pcibus - perform the initial IDE driver scan
+ *
+ * Perform the initial bus rather than driver ordered scan of the
+ * PCI drivers. After this all IDE pci handling becomes standard
+ * module ordering not traditionally ordered.
+ */
+
+int __init ide_scan_pcibus(void)
+{
+ struct pci_dev *dev = NULL;
+ struct pci_driver *d;
+ struct list_head *l, *n;
+
+ pre_init = 0;
+ if (!ide_scan_direction)
+ while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)))
+ ide_scan_pcidev(dev);
+ else
+ while ((dev = pci_get_device_reverse(PCI_ANY_ID, PCI_ANY_ID,
+ dev)))
+ ide_scan_pcidev(dev);
+
+ /*
+ * Hand the drivers over to the PCI layer now we
+ * are post init.
+ */
+
+ list_for_each_safe(l, n, &ide_pci_drivers) {
+ list_del(l);
+ d = list_entry(l, struct pci_driver, node);
+ if (__pci_register_driver(d, d->driver.owner,
+ d->driver.mod_name))
+ printk(KERN_ERR "%s: failed to register %s driver\n",
+ __FUNCTION__, d->driver.mod_name);
+ }
+
+ return 0;
+}
+
+static int __init ide_scan_pci(void)
+{
+ return ide_scan_pcibus();
+}
+
+module_init(ide_scan_pci);
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 3cbca3f4628..d71a584f076 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -1690,6 +1690,11 @@ static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects)
if (error)
tape->failed_pc = NULL;
+ if (!blk_special_request(rq)) {
+ ide_end_request(drive, uptodate, nr_sects);
+ return 0;
+ }
+
spin_lock_irqsave(&tape->spinlock, flags);
/* The request was a pipelined data transfer request */
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 2d63ea9ee61..5eb6fa15dc4 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -35,34 +35,6 @@
#include <asm/uaccess.h>
#include <asm/io.h>
-static void ata_bswap_data (void *buffer, int wcount)
-{
- u16 *p = buffer;
-
- while (wcount--) {
- *p = *p << 8 | *p >> 8; p++;
- *p = *p << 8 | *p >> 8; p++;
- }
-}
-
-static void taskfile_input_data(ide_drive_t *drive, void *buffer, u32 wcount)
-{
- HWIF(drive)->ata_input_data(drive, buffer, wcount);
- if (drive->bswap)
- ata_bswap_data(buffer, wcount);
-}
-
-static void taskfile_output_data(ide_drive_t *drive, void *buffer, u32 wcount)
-{
- if (drive->bswap) {
- ata_bswap_data(buffer, wcount);
- HWIF(drive)->ata_output_data(drive, buffer, wcount);
- ata_bswap_data(buffer, wcount);
- } else {
- HWIF(drive)->ata_output_data(drive, buffer, wcount);
- }
-}
-
void ide_tf_load(ide_drive_t *drive, ide_task_t *task)
{
ide_hwif_t *hwif = drive->hwif;
@@ -77,10 +49,13 @@ void ide_tf_load(ide_drive_t *drive, ide_task_t *task)
"lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n",
drive->name, tf->feature, tf->nsect, tf->lbal,
tf->lbam, tf->lbah, tf->device, tf->command);
+ printk("%s: hob: nsect 0x%02x lbal 0x%02x "
+ "lbam 0x%02x lbah 0x%02x\n",
+ drive->name, tf->hob_nsect, tf->hob_lbal,
+ tf->hob_lbam, tf->hob_lbah);
#endif
- if (IDE_CONTROL_REG)
- hwif->OUTB(drive->ctl, IDE_CONTROL_REG); /* clear nIEN */
+ ide_set_irq(drive, 1);
if ((task->tf_flags & IDE_TFLAG_NO_SELECT_MASK) == 0)
SELECT_MASK(drive, 0);
@@ -124,7 +99,7 @@ int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf)
args.tf.command = WIN_IDENTIFY;
else
args.tf.command = WIN_PIDENTIFY;
- args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
+ args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
args.data_phase = TASKFILE_IN;
return ide_raw_taskfile(drive, &args, buf, 1);
}
@@ -285,7 +260,7 @@ static ide_startstop_t task_no_data_intr(ide_drive_t *drive)
return ide_stopped;
}
-static u8 wait_drive_not_busy(ide_drive_t *drive)
+u8 wait_drive_not_busy(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
int retries;
@@ -293,8 +268,7 @@ static u8 wait_drive_not_busy(ide_drive_t *drive)
/*
* Last sector was transfered, wait until drive is ready.
- * This can take up to 10 usec, but we will wait max 1 ms
- * (drive_cmd_intr() waits that long).
+ * This can take up to 10 usec, but we will wait max 1 ms.
*/
for (retries = 0; retries < 100; retries++) {
if ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT)
@@ -349,9 +323,9 @@ static void ide_pio_sector(ide_drive_t *drive, unsigned int write)
/* do the actual data transfer */
if (write)
- taskfile_output_data(drive, buf, SECTOR_WORDS);
+ hwif->ata_output_data(drive, buf, SECTOR_WORDS);
else
- taskfile_input_data(drive, buf, SECTOR_WORDS);
+ hwif->ata_input_data(drive, buf, SECTOR_WORDS);
kunmap_atomic(buf, KM_BIO_SRC_IRQ);
#ifdef CONFIG_HIGHMEM
@@ -371,9 +345,18 @@ static void ide_pio_multi(ide_drive_t *drive, unsigned int write)
static void ide_pio_datablock(ide_drive_t *drive, struct request *rq,
unsigned int write)
{
+ u8 saved_io_32bit = drive->io_32bit;
+
if (rq->bio) /* fs request */
rq->errors = 0;
+ if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
+ ide_task_t *task = rq->special;
+
+ if (task->tf_flags & IDE_TFLAG_IO_16BIT)
+ drive->io_32bit = 0;
+ }
+
touch_softlockup_watchdog();
switch (drive->hwif->data_phase) {
@@ -385,6 +368,8 @@ static void ide_pio_datablock(ide_drive_t *drive, struct request *rq,
ide_pio_sector(drive, write);
break;
}
+
+ drive->io_32bit = saved_io_32bit;
}
static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq,
@@ -422,27 +407,22 @@ static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq,
return ide_error(drive, s, stat);
}
-static void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat)
+void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat)
{
- HWIF(drive)->cursg = NULL;
-
if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
- ide_task_t *task = rq->special;
+ u8 err = drive->hwif->INB(IDE_ERROR_REG);
- if (task->tf_flags & IDE_TFLAG_FLAGGED) {
- u8 err = drive->hwif->INB(IDE_ERROR_REG);
- ide_end_drive_cmd(drive, stat, err);
- return;
- }
+ ide_end_drive_cmd(drive, stat, err);
+ return;
}
if (rq->rq_disk) {
ide_driver_t *drv;
drv = *(ide_driver_t **)rq->rq_disk->private_data;;
- drv->end_request(drive, 1, rq->hard_nr_sectors);
+ drv->end_request(drive, 1, rq->nr_sectors);
} else
- ide_end_request(drive, 1, rq->hard_nr_sectors);
+ ide_end_request(drive, 1, rq->nr_sectors);
}
/*
@@ -455,7 +435,7 @@ static ide_startstop_t task_in_intr(ide_drive_t *drive)
u8 stat = hwif->INB(IDE_STATUS_REG);
/* new way for dealing with premature shared PCI interrupts */
- if (!OK_STAT(stat, DATA_READY, BAD_R_STAT)) {
+ if (!OK_STAT(stat, DRQ_STAT, BAD_R_STAT)) {
if (stat & (ERR_STAT | DRQ_STAT))
return task_error(drive, rq, __FUNCTION__, stat);
/* No data yet, so wait for another IRQ. */
@@ -468,7 +448,7 @@ static ide_startstop_t task_in_intr(ide_drive_t *drive)
/* If it was the last datablock check status and finish transfer. */
if (!hwif->nleft) {
stat = wait_drive_not_busy(drive);
- if (!OK_STAT(stat, 0, BAD_R_STAT))
+ if (!OK_STAT(stat, 0, BAD_STAT))
return task_error(drive, rq, __FUNCTION__, stat);
task_end_request(drive, rq, stat);
return ide_stopped;
@@ -512,7 +492,7 @@ static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq)
{
ide_startstop_t startstop;
- if (ide_wait_stat(&startstop, drive, DATA_READY,
+ if (ide_wait_stat(&startstop, drive, DRQ_STAT,
drive->bad_wstat, WAIT_DRQ)) {
printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n",
drive->name,
@@ -580,7 +560,6 @@ int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
unsigned int taskin = 0;
unsigned int taskout = 0;
u16 nsect = 0;
- u8 io_32bit = drive->io_32bit;
char __user *buf = (char __user *)arg;
// printk("IDE Taskfile ...\n");
@@ -633,9 +612,10 @@ int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
args.data_phase = req_task->data_phase;
- args.tf_flags = IDE_TFLAG_OUT_DEVICE;
+ args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE |
+ IDE_TFLAG_IN_TF;
if (drive->addressing == 1)
- args.tf_flags |= IDE_TFLAG_LBA48;
+ args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB);
if (req_task->out_flags.all) {
args.tf_flags |= IDE_TFLAG_FLAGGED;
@@ -671,7 +651,6 @@ int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
if (req_task->in_flags.b.data)
args.tf_flags |= IDE_TFLAG_IN_DATA;
- drive->io_32bit = 0;
switch(req_task->data_phase) {
case TASKFILE_MULTI_OUT:
if (!drive->mult_count) {
@@ -767,41 +746,24 @@ abort:
// printk("IDE Taskfile ioctl ended. rc = %i\n", err);
- drive->io_32bit = io_32bit;
-
return err;
}
#endif
-int ide_wait_cmd (ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature, u8 sectors, u8 *buf)
-{
- struct request rq;
- u8 buffer[4];
-
- if (!buf)
- buf = buffer;
- memset(buf, 0, 4 + SECTOR_WORDS * 4 * sectors);
- ide_init_drive_cmd(&rq);
- rq.buffer = buf;
- *buf++ = cmd;
- *buf++ = nsect;
- *buf++ = feature;
- *buf++ = sectors;
- return ide_do_drive_cmd(drive, &rq, ide_wait);
-}
-
int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
{
- int err = 0;
- u8 args[4], *argbuf = args;
- u8 xfer_rate = 0;
- int argsize = 4;
+ u8 *buf = NULL;
+ int bufsize = 0, err = 0;
+ u8 args[4], xfer_rate = 0;
ide_task_t tfargs;
struct ide_taskfile *tf = &tfargs.tf;
if (NULL == (void *) arg) {
struct request rq;
+
ide_init_drive_cmd(&rq);
+ rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
+
return ide_do_drive_cmd(drive, &rq, ide_wait);
}
@@ -810,23 +772,39 @@ int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
memset(&tfargs, 0, sizeof(ide_task_t));
tf->feature = args[2];
- tf->nsect = args[3];
- tf->lbal = args[1];
+ if (args[0] == WIN_SMART) {
+ tf->nsect = args[3];
+ tf->lbal = args[1];
+ tf->lbam = 0x4f;
+ tf->lbah = 0xc2;
+ tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT;
+ } else {
+ tf->nsect = args[1];
+ tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE |
+ IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT;
+ }
tf->command = args[0];
+ tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA;
if (args[3]) {
- argsize = 4 + (SECTOR_WORDS * 4 * args[3]);
- argbuf = kzalloc(argsize, GFP_KERNEL);
- if (argbuf == NULL)
+ tfargs.tf_flags |= IDE_TFLAG_IO_16BIT;
+ bufsize = SECTOR_WORDS * 4 * args[3];
+ buf = kzalloc(bufsize, GFP_KERNEL);
+ if (buf == NULL)
return -ENOMEM;
}
+
if (set_transfer(drive, &tfargs)) {
xfer_rate = args[1];
if (ide_ata66_check(drive, &tfargs))
goto abort;
}
- err = ide_wait_cmd(drive, args[0], args[1], args[2], args[3], argbuf);
+ err = ide_raw_taskfile(drive, &tfargs, buf, args[3]);
+
+ args[0] = tf->status;
+ args[1] = tf->error;
+ args[2] = tf->nsect;
if (!err && xfer_rate) {
/* active-retuning-calls future */
@@ -834,10 +812,13 @@ int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
ide_driveid_update(drive);
}
abort:
- if (copy_to_user((void __user *)arg, argbuf, argsize))
+ if (copy_to_user((void __user *)arg, &args, 4))
err = -EFAULT;
- if (argsize > 4)
- kfree(argbuf);
+ if (buf) {
+ if (copy_to_user((void __user *)(arg + 4), buf, bufsize))
+ err = -EFAULT;
+ kfree(buf);
+ }
return err;
}
@@ -854,7 +835,7 @@ int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
memset(&task, 0, sizeof(task));
memcpy(&task.tf_array[7], &args[1], 6);
task.tf.command = args[0];
- task.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
+ task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
err = ide_no_data_taskfile(drive, &task);
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index c6d4f630e18..97894abd9eb 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -95,7 +95,7 @@ DEFINE_MUTEX(ide_cfg_mtx);
__cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock);
#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
-static int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */
+int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */
#endif
int noautodma = 0;
@@ -116,7 +116,7 @@ EXPORT_SYMBOL(ide_hwifs);
/*
* Do not even *think* about calling this!
*/
-static void init_hwif_data(ide_hwif_t *hwif, unsigned int index)
+void ide_init_port_data(ide_hwif_t *hwif, unsigned int index)
{
unsigned int unit;
@@ -159,6 +159,7 @@ static void init_hwif_data(ide_hwif_t *hwif, unsigned int index)
init_completion(&drive->gendev_rel_comp);
}
}
+EXPORT_SYMBOL_GPL(ide_init_port_data);
static void init_hwif_default(ide_hwif_t *hwif, unsigned int index)
{
@@ -177,8 +178,6 @@ static void init_hwif_default(ide_hwif_t *hwif, unsigned int index)
#endif
}
-extern void ide_arm_init(void);
-
/*
* init_ide_data() sets reasonable default values into all fields
* of all instances of the hwifs and drives, but only on the first call.
@@ -210,16 +209,13 @@ static void __init init_ide_data (void)
/* Initialise all interface structures */
for (index = 0; index < MAX_HWIFS; ++index) {
hwif = &ide_hwifs[index];
- init_hwif_data(hwif, index);
+ ide_init_port_data(hwif, index);
init_hwif_default(hwif, index);
#if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI)
hwif->irq =
ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]);
#endif
}
-#ifdef CONFIG_IDE_ARM
- ide_arm_init();
-#endif
}
/**
@@ -414,8 +410,6 @@ static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
hwif->cds = tmp_hwif->cds;
#endif
- hwif->fixup = tmp_hwif->fixup;
-
hwif->set_pio_mode = tmp_hwif->set_pio_mode;
hwif->set_dma_mode = tmp_hwif->set_dma_mode;
hwif->mdma_filter = tmp_hwif->mdma_filter;
@@ -433,16 +427,13 @@ static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes;
hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes;
+ hwif->dma_host_set = tmp_hwif->dma_host_set;
hwif->dma_setup = tmp_hwif->dma_setup;
hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd;
hwif->dma_start = tmp_hwif->dma_start;
hwif->ide_dma_end = tmp_hwif->ide_dma_end;
- hwif->ide_dma_on = tmp_hwif->ide_dma_on;
- hwif->dma_off_quietly = tmp_hwif->dma_off_quietly;
hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq;
hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq;
- hwif->dma_host_on = tmp_hwif->dma_host_on;
- hwif->dma_host_off = tmp_hwif->dma_host_off;
hwif->dma_lost_irq = tmp_hwif->dma_lost_irq;
hwif->dma_timeout = tmp_hwif->dma_timeout;
@@ -614,7 +605,7 @@ void ide_unregister(unsigned int index)
tmp_hwif = *hwif;
/* restore hwif data to pristine status */
- init_hwif_data(hwif, index);
+ ide_init_port_data(hwif, index);
init_hwif_default(hwif, index);
ide_hwif_restore(hwif, &tmp_hwif);
@@ -680,24 +671,34 @@ void ide_setup_ports ( hw_regs_t *hw,
*/
}
+void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw)
+{
+ memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports));
+ hwif->irq = hw->irq;
+ hwif->noprobe = 0;
+ hwif->chipset = hw->chipset;
+ hwif->gendev.parent = hw->dev;
+ hwif->ack_intr = hw->ack_intr;
+}
+EXPORT_SYMBOL_GPL(ide_init_port_hw);
+
/**
* ide_register_hw - register IDE interface
* @hw: hardware registers
- * @fixup: fixup function
- * @initializing: set while initializing built-in drivers
+ * @quirkproc: quirkproc function
* @hwifp: pointer to returned hwif
*
* Register an IDE interface, specifying exactly the registers etc.
- * Set init=1 iff calling before probes have taken place.
*
* Returns -1 on error.
*/
-int ide_register_hw(hw_regs_t *hw, void (*fixup)(ide_hwif_t *),
- int initializing, ide_hwif_t **hwifp)
+int ide_register_hw(hw_regs_t *hw, void (*quirkproc)(ide_drive_t *),
+ ide_hwif_t **hwifp)
{
int index, retry = 1;
ide_hwif_t *hwif;
+ u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
do {
for (index = 0; index < MAX_HWIFS; ++index) {
@@ -709,8 +710,7 @@ int ide_register_hw(hw_regs_t *hw, void (*fixup)(ide_hwif_t *),
hwif = &ide_hwifs[index];
if (hwif->hold)
continue;
- if ((!hwif->present && !hwif->mate && !initializing) ||
- (!hwif->io_ports[IDE_DATA_OFFSET] && initializing))
+ if (!hwif->present && hwif->mate == NULL)
goto found;
}
for (index = 0; index < MAX_HWIFS; index++)
@@ -721,29 +721,23 @@ found:
if (hwif->present)
ide_unregister(index);
else if (!hwif->hold) {
- init_hwif_data(hwif, index);
+ ide_init_port_data(hwif, index);
init_hwif_default(hwif, index);
}
if (hwif->present)
return -1;
- memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports));
- hwif->irq = hw->irq;
- hwif->noprobe = 0;
- hwif->fixup = fixup;
- hwif->chipset = hw->chipset;
- hwif->gendev.parent = hw->dev;
- hwif->ack_intr = hw->ack_intr;
- if (initializing == 0) {
- u8 idx[4] = { index, 0xff, 0xff, 0xff };
+ ide_init_port_hw(hwif, hw);
+ hwif->quirkproc = quirkproc;
- ide_device_add(idx);
- }
+ idx[0] = index;
+
+ ide_device_add(idx);
if (hwifp)
*hwifp = hwif;
- return (initializing || hwif->present) ? index : -1;
+ return hwif->present ? index : -1;
}
EXPORT_SYMBOL(ide_register_hw);
@@ -836,7 +830,7 @@ int set_using_dma(ide_drive_t *drive, int arg)
if (!drive->id || !(drive->id->capability & 1))
goto out;
- if (hwif->ide_dma_on == NULL)
+ if (hwif->dma_host_set == NULL)
goto out;
err = -EBUSY;
@@ -884,7 +878,10 @@ int set_pio_mode(ide_drive_t *drive, int arg)
if (drive->special.b.set_tune)
return -EBUSY;
+
ide_init_drive_cmd(&rq);
+ rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
+
drive->tune_req = (u8) arg;
drive->special.b.set_tune = 1;
(void) ide_do_drive_cmd(drive, &rq, ide_wait);
@@ -1066,7 +1063,7 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device
ide_init_hwif_ports(&hw, (unsigned long) args[0],
(unsigned long) args[1], NULL);
hw.irq = args[2];
- if (ide_register_hw(&hw, NULL, 0, NULL) == -1)
+ if (ide_register_hw(&hw, NULL, NULL) == -1)
return -EIO;
return 0;
}
@@ -1227,26 +1224,12 @@ static int __init match_parm (char *s, const char *keywords[], int vals[], int m
return 0; /* zero = nothing matched */
}
-#ifdef CONFIG_BLK_DEV_ALI14XX
extern int probe_ali14xx;
-extern int ali14xx_init(void);
-#endif
-#ifdef CONFIG_BLK_DEV_UMC8672
extern int probe_umc8672;
-extern int umc8672_init(void);
-#endif
-#ifdef CONFIG_BLK_DEV_DTC2278
extern int probe_dtc2278;
-extern int dtc2278_init(void);
-#endif
-#ifdef CONFIG_BLK_DEV_HT6560B
extern int probe_ht6560b;
-extern int ht6560b_init(void);
-#endif
-#ifdef CONFIG_BLK_DEV_QD65XX
extern int probe_qd65xx;
-extern int qd65xx_init(void);
-#endif
+extern int cmd640_vlb;
static int __initdata is_chipset_set[MAX_HWIFS];
@@ -1323,7 +1306,7 @@ static int __init ide_setup(char *s)
if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
const char *hd_words[] = {
"none", "noprobe", "nowerr", "cdrom", "nodma",
- "autotune", "noautotune", "minus8", "swapdata", "bswap",
+ "autotune", "noautotune", "-8", "-9", "-10",
"noflush", "remap", "remap63", "scsi", NULL };
unit = s[2] - 'a';
hw = unit / MAX_DRIVES;
@@ -1359,10 +1342,6 @@ static int __init ide_setup(char *s)
case -7: /* "noautotune" */
drive->autotune = IDE_TUNE_NOAUTO;
goto obsolete_option;
- case -9: /* "swapdata" */
- case -10: /* "bswap" */
- drive->bswap = 1;
- goto done;
case -11: /* noflush */
drive->noflush = 1;
goto done;
@@ -1462,11 +1441,8 @@ static int __init ide_setup(char *s)
#endif
#ifdef CONFIG_BLK_DEV_CMD640
case -14: /* "cmd640_vlb" */
- {
- extern int cmd640_vlb; /* flag for cmd640.c */
cmd640_vlb = 1;
goto done;
- }
#endif
#ifdef CONFIG_BLK_DEV_HT6560B
case -13: /* "ht6560b" */
@@ -1556,79 +1532,6 @@ done:
return 1;
}
-extern void __init pnpide_init(void);
-extern void __exit pnpide_exit(void);
-extern void __init h8300_ide_init(void);
-
-/*
- * probe_for_hwifs() finds/initializes "known" IDE interfaces
- */
-static void __init probe_for_hwifs (void)
-{
-#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
- ide_scan_pcibus(ide_scan_direction);
-#endif
-
-#ifdef CONFIG_ETRAX_IDE
- {
- extern void init_e100_ide(void);
- init_e100_ide();
- }
-#endif /* CONFIG_ETRAX_IDE */
-#ifdef CONFIG_BLK_DEV_CMD640
- {
- extern void ide_probe_for_cmd640x(void);
- ide_probe_for_cmd640x();
- }
-#endif /* CONFIG_BLK_DEV_CMD640 */
-#ifdef CONFIG_BLK_DEV_IDE_PMAC
- {
- extern int pmac_ide_probe(void);
- (void)pmac_ide_probe();
- }
-#endif /* CONFIG_BLK_DEV_IDE_PMAC */
-#ifdef CONFIG_BLK_DEV_GAYLE
- {
- extern void gayle_init(void);
- gayle_init();
- }
-#endif /* CONFIG_BLK_DEV_GAYLE */
-#ifdef CONFIG_BLK_DEV_FALCON_IDE
- {
- extern void falconide_init(void);
- falconide_init();
- }
-#endif /* CONFIG_BLK_DEV_FALCON_IDE */
-#ifdef CONFIG_BLK_DEV_MAC_IDE
- {
- extern void macide_init(void);
- macide_init();
- }
-#endif /* CONFIG_BLK_DEV_MAC_IDE */
-#ifdef CONFIG_BLK_DEV_Q40IDE
- {
- extern void q40ide_init(void);
- q40ide_init();
- }
-#endif /* CONFIG_BLK_DEV_Q40IDE */
-#ifdef CONFIG_BLK_DEV_BUDDHA
- {
- extern void buddha_init(void);
- buddha_init();
- }
-#endif /* CONFIG_BLK_DEV_BUDDHA */
-#ifdef CONFIG_BLK_DEV_IDEPNP
- pnpide_init();
-#endif
-#ifdef CONFIG_H8300
- h8300_ide_init();
-#endif
-}
-
-/*
- * Probe module
- */
-
EXPORT_SYMBOL(ide_lock);
static int ide_bus_match(struct device *dev, struct device_driver *drv)
@@ -1775,30 +1678,6 @@ static int __init ide_init(void)
proc_ide_create();
-#ifdef CONFIG_BLK_DEV_ALI14XX
- if (probe_ali14xx)
- (void)ali14xx_init();
-#endif
-#ifdef CONFIG_BLK_DEV_UMC8672
- if (probe_umc8672)
- (void)umc8672_init();
-#endif
-#ifdef CONFIG_BLK_DEV_DTC2278
- if (probe_dtc2278)
- (void)dtc2278_init();
-#endif
-#ifdef CONFIG_BLK_DEV_HT6560B
- if (probe_ht6560b)
- (void)ht6560b_init();
-#endif
-#ifdef CONFIG_BLK_DEV_QD65XX
- if (probe_qd65xx)
- (void)qd65xx_init();
-#endif
-
- /* Probe for special PCI and other "known" interface chipsets. */
- probe_for_hwifs();
-
return 0;
}
@@ -1834,10 +1713,6 @@ void __exit cleanup_module (void)
for (index = 0; index < MAX_HWIFS; ++index)
ide_unregister(index);
-#ifdef CONFIG_BLK_DEV_IDEPNP
- pnpide_exit();
-#endif
-
proc_ide_destroy();
bus_unregister(&ide_bus_type);
diff --git a/drivers/ide/legacy/Makefile b/drivers/ide/legacy/Makefile
index 409822349f1..7043ec7d1e0 100644
--- a/drivers/ide/legacy/Makefile
+++ b/drivers/ide/legacy/Makefile
@@ -1,15 +1,24 @@
+# link order is important here
+
obj-$(CONFIG_BLK_DEV_ALI14XX) += ali14xx.o
+obj-$(CONFIG_BLK_DEV_UMC8672) += umc8672.o
obj-$(CONFIG_BLK_DEV_DTC2278) += dtc2278.o
obj-$(CONFIG_BLK_DEV_HT6560B) += ht6560b.o
obj-$(CONFIG_BLK_DEV_QD65XX) += qd65xx.o
-obj-$(CONFIG_BLK_DEV_UMC8672) += umc8672.o
-obj-$(CONFIG_BLK_DEV_IDECS) += ide-cs.o
+obj-$(CONFIG_BLK_DEV_GAYLE) += gayle.o
+obj-$(CONFIG_BLK_DEV_FALCON_IDE) += falconide.o
+obj-$(CONFIG_BLK_DEV_MAC_IDE) += macide.o
+obj-$(CONFIG_BLK_DEV_Q40IDE) += q40ide.o
+obj-$(CONFIG_BLK_DEV_BUDDHA) += buddha.o
-obj-$(CONFIG_BLK_DEV_PLATFORM) += ide_platform.o
+ifeq ($(CONFIG_BLK_DEV_IDECS), m)
+ obj-m += ide-cs.o
+endif
-# Last of all
-obj-$(CONFIG_BLK_DEV_HD) += hd.o
+ifeq ($(CONFIG_BLK_DEV_PLATFORM), m)
+ obj-m += ide_platform.o
+endif
EXTRA_CFLAGS := -Idrivers/ide
diff --git a/drivers/ide/legacy/ali14xx.c b/drivers/ide/legacy/ali14xx.c
index 38c3a6d63f3..5ec0be4cbad 100644
--- a/drivers/ide/legacy/ali14xx.c
+++ b/drivers/ide/legacy/ali14xx.c
@@ -231,8 +231,7 @@ int probe_ali14xx = 0;
module_param_named(probe, probe_ali14xx, bool, 0);
MODULE_PARM_DESC(probe, "probe for ALI M14xx chipsets");
-/* Can be called directly from ide.c. */
-int __init ali14xx_init(void)
+static int __init ali14xx_init(void)
{
if (probe_ali14xx == 0)
goto out;
@@ -248,9 +247,7 @@ out:
return -ENODEV;
}
-#ifdef MODULE
module_init(ali14xx_init);
-#endif
MODULE_AUTHOR("see local file");
MODULE_DESCRIPTION("support of ALI 14XX IDE chipsets");
diff --git a/drivers/ide/legacy/buddha.c b/drivers/ide/legacy/buddha.c
index 4a0be251a05..74d28e058f5 100644
--- a/drivers/ide/legacy/buddha.c
+++ b/drivers/ide/legacy/buddha.c
@@ -112,6 +112,7 @@ typedef enum BuddhaType_Enum {
BOARD_BUDDHA, BOARD_CATWEASEL, BOARD_XSURF
} BuddhaType;
+static const char *buddha_board_name[] = { "Buddha", "Catweasel", "X-Surf" };
/*
* Check and acknowledge the interrupt status
@@ -143,11 +144,11 @@ static int xsurf_ack_intr(ide_hwif_t *hwif)
* Probe for a Buddha or Catweasel IDE interface
*/
-void __init buddha_init(void)
+static int __init buddha_init(void)
{
hw_regs_t hw;
ide_hwif_t *hwif;
- int i, index;
+ int i;
struct zorro_dev *z = NULL;
u_long buddha_board = 0;
@@ -156,6 +157,8 @@ void __init buddha_init(void)
while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
unsigned long board;
+ u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+
if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_BUDDHA) {
buddha_num_hwifs = BUDDHA_NUM_HWIFS;
type=BOARD_BUDDHA;
@@ -195,7 +198,10 @@ fail_base2:
/* X-Surf doesn't have this. IRQs are always on */
if (type != BOARD_XSURF)
z_writeb(0, buddha_board+BUDDHA_IRQ_MR);
-
+
+ printk(KERN_INFO "ide: %s IDE controller\n",
+ buddha_board_name[type]);
+
for(i=0;i<buddha_num_hwifs;i++) {
if(type != BOARD_XSURF) {
ide_setup_ports(&hw, (buddha_board+buddha_bases[i]),
@@ -213,23 +219,23 @@ fail_base2:
IRQ_AMIGA_PORTS);
}
- index = ide_register_hw(&hw, NULL, 1, &hwif);
- if (index != -1) {
+ hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
+ if (hwif) {
+ u8 index = hwif->index;
+
+ ide_init_port_data(hwif, index);
+ ide_init_port_hw(hwif, &hw);
+
hwif->mmio = 1;
- printk("ide%d: ", index);
- switch(type) {
- case BOARD_BUDDHA:
- printk("Buddha");
- break;
- case BOARD_CATWEASEL:
- printk("Catweasel");
- break;
- case BOARD_XSURF:
- printk("X-Surf");
- break;
- }
- printk(" IDE interface\n");
- }
+
+ idx[i] = index;
+ }
}
+
+ ide_device_add(idx);
}
+
+ return 0;
}
+
+module_init(buddha_init);
diff --git a/drivers/ide/legacy/dtc2278.c b/drivers/ide/legacy/dtc2278.c
index 24a845d45bd..13eee6da280 100644
--- a/drivers/ide/legacy/dtc2278.c
+++ b/drivers/ide/legacy/dtc2278.c
@@ -150,8 +150,7 @@ int probe_dtc2278 = 0;
module_param_named(probe, probe_dtc2278, bool, 0);
MODULE_PARM_DESC(probe, "probe for DTC2278xx chipsets");
-/* Can be called directly from ide.c. */
-int __init dtc2278_init(void)
+static int __init dtc2278_init(void)
{
if (probe_dtc2278 == 0)
return -ENODEV;
@@ -163,9 +162,7 @@ int __init dtc2278_init(void)
return 0;
}
-#ifdef MODULE
module_init(dtc2278_init);
-#endif
MODULE_AUTHOR("See Local File");
MODULE_DESCRIPTION("support of DTC-2278 VLB IDE chipsets");
diff --git a/drivers/ide/legacy/falconide.c b/drivers/ide/legacy/falconide.c
index 7d7936f1b90..2860956bdcb 100644
--- a/drivers/ide/legacy/falconide.c
+++ b/drivers/ide/legacy/falconide.c
@@ -62,19 +62,31 @@ EXPORT_SYMBOL(falconide_intr_lock);
* Probe for a Falcon IDE interface
*/
-void __init falconide_init(void)
+static int __init falconide_init(void)
{
if (MACH_IS_ATARI && ATARIHW_PRESENT(IDE)) {
hw_regs_t hw;
- int index;
+
+ printk(KERN_INFO "ide: Falcon IDE controller\n");
ide_setup_ports(&hw, ATA_HD_BASE, falconide_offsets,
0, 0, NULL,
// falconide_iops,
IRQ_MFP_IDE);
- index = ide_register_hw(&hw, NULL, 1, NULL);
- if (index != -1)
- printk("ide%d: Falcon IDE interface\n", index);
+ hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
+ if (hwif) {
+ u8 index = hwif->index;
+ u8 idx[4] = { index, 0xff, 0xff, 0xff };
+
+ ide_init_port_data(hwif, index);
+ ide_init_port_hw(hwif, &hw);
+
+ ide_device_add(idx);
+ }
}
+
+ return 0;
}
+
+module_init(falconide_init);
diff --git a/drivers/ide/legacy/gayle.c b/drivers/ide/legacy/gayle.c
index 53331ee1e95..492fa047efc 100644
--- a/drivers/ide/legacy/gayle.c
+++ b/drivers/ide/legacy/gayle.c
@@ -110,12 +110,13 @@ static int gayle_ack_intr_a1200(ide_hwif_t *hwif)
* Probe for a Gayle IDE interface (and optionally for an IDE doubler)
*/
-void __init gayle_init(void)
+static int __init gayle_init(void)
{
int a4000, i;
+ u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
if (!MACH_IS_AMIGA)
- return;
+ return -ENODEV;
if ((a4000 = AMIGAHW_PRESENT(A4000_IDE)) || AMIGAHW_PRESENT(A1200_IDE))
goto found;
@@ -125,15 +126,21 @@ void __init gayle_init(void)
NULL))
goto found;
#endif
- return;
+ return -ENODEV;
found:
+ printk(KERN_INFO "ide: Gayle IDE controller (A%d style%s)\n",
+ a4000 ? 4000 : 1200,
+#ifdef CONFIG_BLK_DEV_IDEDOUBLER
+ ide_doubler ? ", IDE doubler" :
+#endif
+ "");
+
for (i = 0; i < GAYLE_NUM_PROBE_HWIFS; i++) {
unsigned long base, ctrlport, irqport;
ide_ack_intr_t *ack_intr;
hw_regs_t hw;
ide_hwif_t *hwif;
- int index;
unsigned long phys_base, res_start, res_n;
if (a4000) {
@@ -165,21 +172,23 @@ found:
// &gayle_iops,
IRQ_AMIGA_PORTS);
- index = ide_register_hw(&hw, NULL, 1, &hwif);
- if (index != -1) {
+ hwif = ide_find_port(base);
+ if (hwif) {
+ u8 index = hwif->index;
+
+ ide_init_port_data(hwif, index);
+ ide_init_port_hw(hwif, &hw);
+
hwif->mmio = 1;
- switch (i) {
- case 0:
- printk("ide%d: Gayle IDE interface (A%d style)\n", index,
- a4000 ? 4000 : 1200);
- break;
-#ifdef CONFIG_BLK_DEV_IDEDOUBLER
- case 1:
- printk("ide%d: IDE doubler\n", index);
- break;
-#endif /* CONFIG_BLK_DEV_IDEDOUBLER */
- }
+
+ idx[i] = index;
} else
release_mem_region(res_start, res_n);
}
+
+ ide_device_add(idx);
+
+ return 0;
}
+
+module_init(gayle_init);
diff --git a/drivers/ide/legacy/ht6560b.c b/drivers/ide/legacy/ht6560b.c
index a4245d13f11..8da5031a6d0 100644
--- a/drivers/ide/legacy/ht6560b.c
+++ b/drivers/ide/legacy/ht6560b.c
@@ -307,8 +307,7 @@ int probe_ht6560b = 0;
module_param_named(probe, probe_ht6560b, bool, 0);
MODULE_PARM_DESC(probe, "probe for HT6560B chipset");
-/* Can be called directly from ide.c. */
-int __init ht6560b_init(void)
+static int __init ht6560b_init(void)
{
ide_hwif_t *hwif, *mate;
static u8 idx[4] = { 0, 1, 0xff, 0xff };
@@ -369,9 +368,7 @@ release_region:
return -ENODEV;
}
-#ifdef MODULE
module_init(ht6560b_init);
-#endif
MODULE_AUTHOR("See Local File");
MODULE_DESCRIPTION("HT-6560B EIDE-controller support");
diff --git a/drivers/ide/legacy/ide-cs.c b/drivers/ide/legacy/ide-cs.c
index 03715c05866..f4ea15b3296 100644
--- a/drivers/ide/legacy/ide-cs.c
+++ b/drivers/ide/legacy/ide-cs.c
@@ -153,7 +153,7 @@ static int idecs_register(unsigned long io, unsigned long ctl, unsigned long irq
hw.irq = irq;
hw.chipset = ide_pci;
hw.dev = &handle->dev;
- return ide_register_hw(&hw, &ide_undecoded_slave, 0, NULL);
+ return ide_register_hw(&hw, &ide_undecoded_slave, NULL);
}
/*======================================================================
diff --git a/drivers/ide/legacy/ide_platform.c b/drivers/ide/legacy/ide_platform.c
index 7bb79f53dac..69a0fb0e564 100644
--- a/drivers/ide/legacy/ide_platform.c
+++ b/drivers/ide/legacy/ide_platform.c
@@ -28,39 +28,27 @@ static struct {
int index;
} hwif_prop;
-static ide_hwif_t *__devinit plat_ide_locate_hwif(void __iomem *base,
- void __iomem *ctrl, struct pata_platform_info *pdata, int irq,
- int mmio)
+static void __devinit plat_ide_setup_ports(hw_regs_t *hw,
+ void __iomem *base,
+ void __iomem *ctrl,
+ struct pata_platform_info *pdata,
+ int irq)
{
unsigned long port = (unsigned long)base;
- ide_hwif_t *hwif = ide_find_port(port);
int i;
- if (hwif == NULL)
- goto out;
-
- hwif->io_ports[IDE_DATA_OFFSET] = port;
+ hw->io_ports[IDE_DATA_OFFSET] = port;
port += (1 << pdata->ioport_shift);
for (i = IDE_ERROR_OFFSET; i <= IDE_STATUS_OFFSET;
i++, port += (1 << pdata->ioport_shift))
- hwif->io_ports[i] = port;
-
- hwif->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
+ hw->io_ports[i] = port;
- hwif->irq = irq;
+ hw->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
- hwif->chipset = ide_generic;
+ hw->irq = irq;
- if (mmio) {
- hwif->mmio = 1;
- default_hwif_mmiops(hwif);
- }
-
- hwif_prop.hwif = hwif;
- hwif_prop.index = hwif->index;
-out:
- return hwif;
+ hw->chipset = ide_generic;
}
static int __devinit plat_ide_probe(struct platform_device *pdev)
@@ -71,6 +59,7 @@ static int __devinit plat_ide_probe(struct platform_device *pdev)
u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
int ret = 0;
int mmio = 0;
+ hw_regs_t hw;
pdata = pdev->dev.platform_data;
@@ -106,15 +95,27 @@ static int __devinit plat_ide_probe(struct platform_device *pdev)
res_alt->start, res_alt->end - res_alt->start + 1);
}
- hwif = plat_ide_locate_hwif(hwif_prop.plat_ide_mapbase,
- hwif_prop.plat_ide_alt_mapbase, pdata, res_irq->start, mmio);
-
+ hwif = ide_find_port((unsigned long)hwif_prop.plat_ide_mapbase);
if (!hwif) {
ret = -ENODEV;
goto out;
}
- hwif->gendev.parent = &pdev->dev;
- hwif->noprobe = 0;
+
+ memset(&hw, 0, sizeof(hw));
+ plat_ide_setup_ports(&hw, hwif_prop.plat_ide_mapbase,
+ hwif_prop.plat_ide_alt_mapbase,
+ pdata, res_irq->start);
+ hw.dev = &pdev->dev;
+
+ ide_init_port_hw(hwif, &hw);
+
+ if (mmio) {
+ hwif->mmio = 1;
+ default_hwif_mmiops(hwif);
+ }
+
+ hwif_prop.hwif = hwif;
+ hwif_prop.index = hwif->index;
idx[0] = hwif->index;
diff --git a/drivers/ide/legacy/macide.c b/drivers/ide/legacy/macide.c
index 5c6aa77c237..782d4c76c0e 100644
--- a/drivers/ide/legacy/macide.c
+++ b/drivers/ide/legacy/macide.c
@@ -77,15 +77,17 @@ int macide_ack_intr(ide_hwif_t* hwif)
return 0;
}
+static const char *mac_ide_name[] =
+ { "Quadra", "Powerbook", "Powerbook Baboon" };
+
/*
* Probe for a Macintosh IDE interface
*/
-void __init macide_init(void)
+static int __init macide_init(void)
{
hw_regs_t hw;
ide_hwif_t *hwif;
- int index = -1;
switch (macintosh_config->ide_type) {
case MAC_IDE_QUADRA:
@@ -93,48 +95,50 @@ void __init macide_init(void)
0, 0, macide_ack_intr,
// quadra_ide_iops,
IRQ_NUBUS_F);
- index = ide_register_hw(&hw, NULL, 1, &hwif);
break;
case MAC_IDE_PB:
ide_setup_ports(&hw, IDE_BASE, macide_offsets,
0, 0, macide_ack_intr,
// macide_pb_iops,
IRQ_NUBUS_C);
- index = ide_register_hw(&hw, NULL, 1, &hwif);
break;
case MAC_IDE_BABOON:
ide_setup_ports(&hw, BABOON_BASE, macide_offsets,
0, 0, NULL,
// macide_baboon_iops,
IRQ_BABOON_1);
- index = ide_register_hw(&hw, NULL, 1, &hwif);
- if (index == -1) break;
- if (macintosh_config->ident == MAC_MODEL_PB190) {
+ break;
+ default:
+ return -ENODEV;
+ }
+
+ printk(KERN_INFO "ide: Macintosh %s IDE controller\n",
+ mac_ide_name[macintosh_config->ide_type - 1]);
+ hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
+ if (hwif) {
+ u8 index = hwif->index;
+ u8 idx[4] = { index, 0xff, 0xff, 0xff };
+
+ ide_init_port_data(hwif, index);
+ ide_init_port_hw(hwif, &hw);
+
+ if (macintosh_config->ide_type == MAC_IDE_BABOON &&
+ macintosh_config->ident == MAC_MODEL_PB190) {
/* Fix breakage in ide-disk.c: drive capacity */
/* is not initialized for drives without a */
/* hardware ID, and we can't get that without */
/* probing the drive which freezes a 190. */
-
- ide_drive_t *drive = &ide_hwifs[index].drives[0];
+ ide_drive_t *drive = &hwif->drives[0];
drive->capacity64 = drive->cyl*drive->head*drive->sect;
-
}
- break;
-
- default:
- return;
- }
- if (index != -1) {
hwif->mmio = 1;
- if (macintosh_config->ide_type == MAC_IDE_QUADRA)
- printk(KERN_INFO "ide%d: Macintosh Quadra IDE interface\n", index);
- else if (macintosh_config->ide_type == MAC_IDE_PB)
- printk(KERN_INFO "ide%d: Macintosh Powerbook IDE interface\n", index);
- else if (macintosh_config->ide_type == MAC_IDE_BABOON)
- printk(KERN_INFO "ide%d: Macintosh Powerbook Baboon IDE interface\n", index);
- else
- printk(KERN_INFO "ide%d: Unknown Macintosh IDE interface\n", index);
+
+ ide_device_add(idx);
}
+
+ return 0;
}
+
+module_init(macide_init);
diff --git a/drivers/ide/legacy/q40ide.c b/drivers/ide/legacy/q40ide.c
index 6ea46a6723e..f5329730df9 100644
--- a/drivers/ide/legacy/q40ide.c
+++ b/drivers/ide/legacy/q40ide.c
@@ -111,15 +111,17 @@ static const char *q40_ide_names[Q40IDE_NUM_HWIFS]={
* Probe for Q40 IDE interfaces
*/
-void __init q40ide_init(void)
+static int __init q40ide_init(void)
{
int i;
ide_hwif_t *hwif;
- int index;
const char *name;
+ u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
if (!MACH_IS_Q40)
- return ;
+ return -ENODEV;
+
+ printk(KERN_INFO "ide: Q40 IDE controller\n");
for (i = 0; i < Q40IDE_NUM_HWIFS; i++) {
hw_regs_t hw;
@@ -141,10 +143,20 @@ void __init q40ide_init(void)
0, NULL,
// m68kide_iops,
q40ide_default_irq(pcide_bases[i]));
- index = ide_register_hw(&hw, NULL, 1, &hwif);
- // **FIXME**
- if (index != -1)
+
+ hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
+ if (hwif) {
+ ide_init_port_data(hwif, hwif->index);
+ ide_init_port_hw(hwif, &hw);
hwif->mmio = 1;
+
+ idx[i] = hwif->index;
+ }
}
+
+ ide_device_add(idx);
+
+ return 0;
}
+module_init(q40ide_init);
diff --git a/drivers/ide/legacy/qd65xx.c b/drivers/ide/legacy/qd65xx.c
index 912e73853fa..2bac4c1a653 100644
--- a/drivers/ide/legacy/qd65xx.c
+++ b/drivers/ide/legacy/qd65xx.c
@@ -478,8 +478,7 @@ int probe_qd65xx = 0;
module_param_named(probe, probe_qd65xx, bool, 0);
MODULE_PARM_DESC(probe, "probe for QD65xx chipsets");
-/* Can be called directly from ide.c. */
-int __init qd65xx_init(void)
+static int __init qd65xx_init(void)
{
if (probe_qd65xx == 0)
return -ENODEV;
@@ -492,9 +491,7 @@ int __init qd65xx_init(void)
return 0;
}
-#ifdef MODULE
module_init(qd65xx_init);
-#endif
MODULE_AUTHOR("Samuel Thibault");
MODULE_DESCRIPTION("support of qd65xx vlb ide chipset");
diff --git a/drivers/ide/legacy/umc8672.c b/drivers/ide/legacy/umc8672.c
index 79577b91687..a1ae1ae6699 100644
--- a/drivers/ide/legacy/umc8672.c
+++ b/drivers/ide/legacy/umc8672.c
@@ -169,8 +169,7 @@ int probe_umc8672 = 0;
module_param_named(probe, probe_umc8672, bool, 0);
MODULE_PARM_DESC(probe, "probe for UMC8672 chipset");
-/* Can be called directly from ide.c. */
-int __init umc8672_init(void)
+static int __init umc8672_init(void)
{
if (probe_umc8672 == 0)
goto out;
@@ -181,9 +180,7 @@ out:
return -ENODEV;;
}
-#ifdef MODULE
module_init(umc8672_init);
-#endif
MODULE_AUTHOR("Wolfram Podien");
MODULE_DESCRIPTION("Support for UMC 8672 IDE chipset");
diff --git a/drivers/ide/mips/au1xxx-ide.c b/drivers/ide/mips/au1xxx-ide.c
index a4d0d4ca73d..2d3e5115b83 100644
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -395,26 +395,10 @@ static int auide_dma_test_irq(ide_drive_t *drive)
return 0;
}
-static void auide_dma_host_on(ide_drive_t *drive)
+static void auide_dma_host_set(ide_drive_t *drive, int on)
{
}
-static int auide_dma_on(ide_drive_t *drive)
-{
- drive->using_dma = 1;
-
- return 0;
-}
-
-static void auide_dma_host_off(ide_drive_t *drive)
-{
-}
-
-static void auide_dma_off_quietly(ide_drive_t *drive)
-{
- drive->using_dma = 0;
-}
-
static void auide_dma_lost_irq(ide_drive_t *drive)
{
printk(KERN_ERR "%s: IRQ lost\n", drive->name);
@@ -641,12 +625,13 @@ static int au_ide_probe(struct device *dev)
/* FIXME: This might possibly break PCMCIA IDE devices */
hwif = &ide_hwifs[pdev->id];
- hwif->irq = ahwif->irq;
- hwif->chipset = ide_au1xxx;
memset(&hw, 0, sizeof(hw));
auide_setup_ports(&hw, ahwif);
- memcpy(hwif->io_ports, hw.io_ports, sizeof(hwif->io_ports));
+ hw.irq = ahwif->irq;
+ hw.chipset = ide_au1xxx;
+
+ ide_init_port_hw(hwif, &hw);
hwif->ultra_mask = 0x0; /* Disable Ultra DMA */
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
@@ -660,7 +645,6 @@ static int au_ide_probe(struct device *dev)
hwif->pio_mask = ATA_PIO4;
hwif->host_flags = IDE_HFLAG_POST_SET_MODE;
- hwif->noprobe = 0;
hwif->drives[0].unmask = 1;
hwif->drives[1].unmask = 1;
@@ -682,29 +666,25 @@ static int au_ide_probe(struct device *dev)
hwif->set_dma_mode = &auide_set_dma_mode;
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
- hwif->dma_off_quietly = &auide_dma_off_quietly;
hwif->dma_timeout = &auide_dma_timeout;
hwif->mdma_filter = &auide_mdma_filter;
+ hwif->dma_host_set = &auide_dma_host_set;
hwif->dma_exec_cmd = &auide_dma_exec_cmd;
hwif->dma_start = &auide_dma_start;
hwif->ide_dma_end = &auide_dma_end;
hwif->dma_setup = &auide_dma_setup;
hwif->ide_dma_test_irq = &auide_dma_test_irq;
- hwif->dma_host_off = &auide_dma_host_off;
- hwif->dma_host_on = &auide_dma_host_on;
hwif->dma_lost_irq = &auide_dma_lost_irq;
- hwif->ide_dma_on = &auide_dma_on;
-#else /* !CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */
+#endif
hwif->channel = 0;
- hwif->hold = 1;
hwif->select_data = 0; /* no chipset-specific code */
hwif->config_data = 0; /* no chipset-specific code */
hwif->drives[0].autotune = 1; /* 1=autotune, 2=noautotune, 0=default */
hwif->drives[1].autotune = 1;
-#endif
+
hwif->drives[0].no_io_32bit = 1;
hwif->drives[1].no_io_32bit = 1;
diff --git a/drivers/ide/mips/swarm.c b/drivers/ide/mips/swarm.c
index 521edd41b57..8b3959dfa2b 100644
--- a/drivers/ide/mips/swarm.c
+++ b/drivers/ide/mips/swarm.c
@@ -117,6 +117,7 @@ static int __devinit swarm_ide_probe(struct device *dev)
default_hwif_mmiops(hwif);
/* Prevent resource map manipulation. */
hwif->mmio = 1;
+ hwif->chipset = ide_generic;
hwif->noprobe = 0;
for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
diff --git a/drivers/ide/pci/Makefile b/drivers/ide/pci/Makefile
index 95d1ea8f1f1..94803253e8a 100644
--- a/drivers/ide/pci/Makefile
+++ b/drivers/ide/pci/Makefile
@@ -36,4 +36,8 @@ obj-$(CONFIG_BLK_DEV_VIA82CXXX) += via82cxxx.o
# Must appear at the end of the block
obj-$(CONFIG_BLK_DEV_GENERIC) += generic.o
+ifeq ($(CONFIG_BLK_DEV_CMD640), m)
+ obj-m += cmd640.o
+endif
+
EXTRA_CFLAGS := -Idrivers/ide
diff --git a/drivers/ide/pci/atiixp.c b/drivers/ide/pci/atiixp.c
index 5ae26564fb7..491871984aa 100644
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/pci/atiixp.c
@@ -1,5 +1,5 @@
/*
- * linux/drivers/ide/pci/atiixp.c Version 0.03 Aug 3 2007
+ * linux/drivers/ide/pci/atiixp.c Version 0.05 Nov 9 2007
*
* Copyright (C) 2003 ATI Inc. <hyu@ati.com>
* Copyright (C) 2004,2007 Bartlomiej Zolnierkiewicz
@@ -43,47 +43,8 @@ static atiixp_ide_timing mdma_timing[] = {
{ 0x02, 0x00 },
};
-static int save_mdma_mode[4];
-
static DEFINE_SPINLOCK(atiixp_lock);
-static void atiixp_dma_host_on(ide_drive_t *drive)
-{
- struct pci_dev *dev = drive->hwif->pci_dev;
- unsigned long flags;
- u16 tmp16;
-
- spin_lock_irqsave(&atiixp_lock, flags);
-
- pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &tmp16);
- if (save_mdma_mode[drive->dn])
- tmp16 &= ~(1 << drive->dn);
- else
- tmp16 |= (1 << drive->dn);
- pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, tmp16);
-
- spin_unlock_irqrestore(&atiixp_lock, flags);
-
- ide_dma_host_on(drive);
-}
-
-static void atiixp_dma_host_off(ide_drive_t *drive)
-{
- struct pci_dev *dev = drive->hwif->pci_dev;
- unsigned long flags;
- u16 tmp16;
-
- spin_lock_irqsave(&atiixp_lock, flags);
-
- pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &tmp16);
- tmp16 &= ~(1 << drive->dn);
- pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, tmp16);
-
- spin_unlock_irqrestore(&atiixp_lock, flags);
-
- ide_dma_host_off(drive);
-}
-
/**
* atiixp_set_pio_mode - set host controller for PIO mode
* @drive: drive
@@ -132,26 +93,33 @@ static void atiixp_set_dma_mode(ide_drive_t *drive, const u8 speed)
int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8;
u32 tmp32;
u16 tmp16;
+ u16 udma_ctl = 0;
spin_lock_irqsave(&atiixp_lock, flags);
- save_mdma_mode[drive->dn] = 0;
+ pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &udma_ctl);
+
if (speed >= XFER_UDMA_0) {
pci_read_config_word(dev, ATIIXP_IDE_UDMA_MODE, &tmp16);
tmp16 &= ~(0x07 << (drive->dn * 4));
tmp16 |= ((speed & 0x07) << (drive->dn * 4));
pci_write_config_word(dev, ATIIXP_IDE_UDMA_MODE, tmp16);
- } else {
- if ((speed >= XFER_MW_DMA_0) && (speed <= XFER_MW_DMA_2)) {
- save_mdma_mode[drive->dn] = speed;
- pci_read_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, &tmp32);
- tmp32 &= ~(0xff << timing_shift);
- tmp32 |= (mdma_timing[speed & 0x03].recover_width << timing_shift) |
- (mdma_timing[speed & 0x03].command_width << (timing_shift + 4));
- pci_write_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, tmp32);
- }
+
+ udma_ctl |= (1 << drive->dn);
+ } else if (speed >= XFER_MW_DMA_0) {
+ u8 i = speed & 0x03;
+
+ pci_read_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, &tmp32);
+ tmp32 &= ~(0xff << timing_shift);
+ tmp32 |= (mdma_timing[i].recover_width << timing_shift) |
+ (mdma_timing[i].command_width << (timing_shift + 4));
+ pci_write_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, tmp32);
+
+ udma_ctl &= ~(1 << drive->dn);
}
+ pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, udma_ctl);
+
spin_unlock_irqrestore(&atiixp_lock, flags);
}
@@ -181,9 +149,6 @@ static void __devinit init_hwif_atiixp(ide_hwif_t *hwif)
hwif->cbl = ATA_CBL_PATA80;
else
hwif->cbl = ATA_CBL_PATA40;
-
- hwif->dma_host_on = &atiixp_dma_host_on;
- hwif->dma_host_off = &atiixp_dma_host_off;
}
static const struct ide_port_info atiixp_pci_info[] __devinitdata = {
diff --git a/drivers/ide/pci/cmd640.c b/drivers/ide/pci/cmd640.c
index 4aa48104e0c..da3565e0071 100644
--- a/drivers/ide/pci/cmd640.c
+++ b/drivers/ide/pci/cmd640.c
@@ -706,9 +706,9 @@ static int pci_conf2(void)
}
/*
- * Probe for a cmd640 chipset, and initialize it if found. Called from ide.c
+ * Probe for a cmd640 chipset, and initialize it if found.
*/
-int __init ide_probe_for_cmd640x (void)
+static int __init cmd640x_init(void)
{
#ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
int second_port_toggled = 0;
@@ -717,6 +717,7 @@ int __init ide_probe_for_cmd640x (void)
const char *bus_type, *port2;
unsigned int index;
u8 b, cfr;
+ u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
if (cmd640_vlb && probe_for_cmd640_vlb()) {
bus_type = "VLB";
@@ -769,6 +770,8 @@ int __init ide_probe_for_cmd640x (void)
cmd_hwif0->set_pio_mode = &cmd640_set_pio_mode;
#endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
+ idx[0] = cmd_hwif0->index;
+
/*
* Ensure compatibility by always using the slowest timings
* for access to the drive's command register block,
@@ -826,6 +829,8 @@ int __init ide_probe_for_cmd640x (void)
cmd_hwif1->pio_mask = ATA_PIO5;
cmd_hwif1->set_pio_mode = &cmd640_set_pio_mode;
#endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
+
+ idx[1] = cmd_hwif1->index;
}
printk(KERN_INFO "%s: %sserialized, secondary interface %s\n", cmd_hwif1->name,
cmd_hwif0->serialized ? "" : "not ", port2);
@@ -872,6 +877,13 @@ int __init ide_probe_for_cmd640x (void)
#ifdef CMD640_DUMP_REGS
cmd640_dump_regs();
#endif
+
+ ide_device_add(idx);
+
return 1;
}
+module_param_named(probe_vlb, cmd640_vlb, bool, 0);
+MODULE_PARM_DESC(probe_vlb, "probe for VLB version of CMD640 chipset");
+
+module_init(cmd640x_init);
diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c
index 0b1e9479f01..cd4eb9def15 100644
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -1,5 +1,5 @@
/*
- * linux/drivers/ide/pci/cmd64x.c Version 1.52 Dec 24, 2007
+ * linux/drivers/ide/pci/cmd64x.c Version 1.53 Dec 24, 2007
*
* cmd64x.c: Enable interrupts at initialization time on Ultra/PCI machines.
* Due to massive hardware bugs, UltraDMA is only supported
@@ -22,8 +22,6 @@
#include <asm/io.h>
-#define DISPLAY_CMD64X_TIMINGS
-
#define CMD_DEBUG 0
#if CMD_DEBUG
@@ -37,11 +35,6 @@
*/
#define CFR 0x50
#define CFR_INTR_CH0 0x04
-#define CNTRL 0x51
-#define CNTRL_ENA_1ST 0x04
-#define CNTRL_ENA_2ND 0x08
-#define CNTRL_DIS_RA0 0x40
-#define CNTRL_DIS_RA1 0x80
#define CMDTIM 0x52
#define ARTTIM0 0x53
@@ -60,108 +53,13 @@
#define MRDMODE 0x71
#define MRDMODE_INTR_CH0 0x04
#define MRDMODE_INTR_CH1 0x08
-#define MRDMODE_BLK_CH0 0x10
-#define MRDMODE_BLK_CH1 0x20
-#define BMIDESR0 0x72
#define UDIDETCR0 0x73
#define DTPR0 0x74
#define BMIDECR1 0x78
#define BMIDECSR 0x79
-#define BMIDESR1 0x7A
#define UDIDETCR1 0x7B
#define DTPR1 0x7C
-#if defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
-#include <linux/stat.h>
-#include <linux/proc_fs.h>
-
-static u8 cmd64x_proc = 0;
-
-#define CMD_MAX_DEVS 5
-
-static struct pci_dev *cmd_devs[CMD_MAX_DEVS];
-static int n_cmd_devs;
-
-static char * print_cmd64x_get_info (char *buf, struct pci_dev *dev, int index)
-{
- char *p = buf;
- u8 reg72 = 0, reg73 = 0; /* primary */
- u8 reg7a = 0, reg7b = 0; /* secondary */
- u8 reg50 = 1, reg51 = 1, reg57 = 0, reg71 = 0; /* extra */
-
- p += sprintf(p, "\nController: %d\n", index);
- p += sprintf(p, "PCI-%x Chipset.\n", dev->device);
-
- (void) pci_read_config_byte(dev, CFR, &reg50);
- (void) pci_read_config_byte(dev, CNTRL, &reg51);
- (void) pci_read_config_byte(dev, ARTTIM23, &reg57);
- (void) pci_read_config_byte(dev, MRDMODE, &reg71);
- (void) pci_read_config_byte(dev, BMIDESR0, &reg72);
- (void) pci_read_config_byte(dev, UDIDETCR0, &reg73);
- (void) pci_read_config_byte(dev, BMIDESR1, &reg7a);
- (void) pci_read_config_byte(dev, UDIDETCR1, &reg7b);
-
- /* PCI0643/6 originally didn't have the primary channel enable bit */
- if ((dev->device == PCI_DEVICE_ID_CMD_643) ||
- (dev->device == PCI_DEVICE_ID_CMD_646 && dev->revision < 3))
- reg51 |= CNTRL_ENA_1ST;
-
- p += sprintf(p, "---------------- Primary Channel "
- "---------------- Secondary Channel ------------\n");
- p += sprintf(p, " %s %s\n",
- (reg51 & CNTRL_ENA_1ST) ? "enabled " : "disabled",
- (reg51 & CNTRL_ENA_2ND) ? "enabled " : "disabled");
- p += sprintf(p, "---------------- drive0 --------- drive1 "
- "-------- drive0 --------- drive1 ------\n");
- p += sprintf(p, "DMA enabled: %s %s"
- " %s %s\n",
- (reg72 & 0x20) ? "yes" : "no ", (reg72 & 0x40) ? "yes" : "no ",
- (reg7a & 0x20) ? "yes" : "no ", (reg7a & 0x40) ? "yes" : "no ");
- p += sprintf(p, "UltraDMA mode: %s (%c) %s (%c)",
- ( reg73 & 0x01) ? " on" : "off",
- ((reg73 & 0x30) == 0x30) ? ((reg73 & 0x04) ? '3' : '0') :
- ((reg73 & 0x30) == 0x20) ? ((reg73 & 0x04) ? '3' : '1') :
- ((reg73 & 0x30) == 0x10) ? ((reg73 & 0x04) ? '4' : '2') :
- ((reg73 & 0x30) == 0x00) ? ((reg73 & 0x04) ? '5' : '2') : '?',
- ( reg73 & 0x02) ? " on" : "off",
- ((reg73 & 0xC0) == 0xC0) ? ((reg73 & 0x08) ? '3' : '0') :
- ((reg73 & 0xC0) == 0x80) ? ((reg73 & 0x08) ? '3' : '1') :
- ((reg73 & 0xC0) == 0x40) ? ((reg73 & 0x08) ? '4' : '2') :
- ((reg73 & 0xC0) == 0x00) ? ((reg73 & 0x08) ? '5' : '2') : '?');
- p += sprintf(p, " %s (%c) %s (%c)\n",
- ( reg7b & 0x01) ? " on" : "off",
- ((reg7b & 0x30) == 0x30) ? ((reg7b & 0x04) ? '3' : '0') :
- ((reg7b & 0x30) == 0x20) ? ((reg7b & 0x04) ? '3' : '1') :
- ((reg7b & 0x30) == 0x10) ? ((reg7b & 0x04) ? '4' : '2') :
- ((reg7b & 0x30) == 0x00) ? ((reg7b & 0x04) ? '5' : '2') : '?',
- ( reg7b & 0x02) ? " on" : "off",
- ((reg7b & 0xC0) == 0xC0) ? ((reg7b & 0x08) ? '3' : '0') :
- ((reg7b & 0xC0) == 0x80) ? ((reg7b & 0x08) ? '3' : '1') :
- ((reg7b & 0xC0) == 0x40) ? ((reg7b & 0x08) ? '4' : '2') :
- ((reg7b & 0xC0) == 0x00) ? ((reg7b & 0x08) ? '5' : '2') : '?');
- p += sprintf(p, "Interrupt: %s, %s %s, %s\n",
- (reg71 & MRDMODE_BLK_CH0 ) ? "blocked" : "enabled",
- (reg50 & CFR_INTR_CH0 ) ? "pending" : "clear ",
- (reg71 & MRDMODE_BLK_CH1 ) ? "blocked" : "enabled",
- (reg57 & ARTTIM23_INTR_CH1) ? "pending" : "clear ");
-
- return (char *)p;
-}
-
-static int cmd64x_get_info (char *buffer, char **addr, off_t offset, int count)
-{
- char *p = buffer;
- int i;
-
- for (i = 0; i < n_cmd_devs; i++) {
- struct pci_dev *dev = cmd_devs[i];
- p = print_cmd64x_get_info(p, dev, i);
- }
- return p-buffer; /* => must be less than 4k! */
-}
-
-#endif /* defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_IDE_PROC_FS) */
-
static u8 quantize_timing(int timing, int quant)
{
return (timing + quant - 1) / quant;
@@ -472,16 +370,6 @@ static unsigned int __devinit init_chipset_cmd64x(struct pci_dev *dev, const cha
mrdmode &= ~0x30;
(void) pci_write_config_byte(dev, MRDMODE, (mrdmode | 0x02));
-#if defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
-
- cmd_devs[n_cmd_devs++] = dev;
-
- if (!cmd64x_proc) {
- cmd64x_proc = 1;
- ide_pci_create_host_proc("cmd64x", cmd64x_get_info);
- }
-#endif /* DISPLAY_CMD64X_TIMINGS && CONFIG_IDE_PROC_FS */
-
return 0;
}
diff --git a/drivers/ide/pci/cs5520.c b/drivers/ide/pci/cs5520.c
index d1a91bcb5b2..6ec00b8d7ec 100644
--- a/drivers/ide/pci/cs5520.c
+++ b/drivers/ide/pci/cs5520.c
@@ -71,7 +71,6 @@ static void cs5520_set_pio_mode(ide_drive_t *drive, const u8 pio)
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *pdev = hwif->pci_dev;
int controller = drive->dn > 1 ? 1 : 0;
- u8 reg;
/* FIXME: if DMA = 1 do we need to set the DMA bit here ? */
@@ -91,11 +90,6 @@ static void cs5520_set_pio_mode(ide_drive_t *drive, const u8 pio)
pci_write_config_byte(pdev, 0x66 + 4*controller + (drive->dn&1),
(cs5520_pio_clocks[pio].recovery << 4) |
(cs5520_pio_clocks[pio].assert));
-
- /* Set the DMA enable/disable flag */
- reg = inb(hwif->dma_base + 0x02 + 8*controller);
- reg |= 1<<((drive->dn&1)+5);
- outb(reg, hwif->dma_base + 0x02 + 8*controller);
}
static void cs5520_set_dma_mode(ide_drive_t *drive, const u8 speed)
@@ -109,13 +103,14 @@ static void cs5520_set_dma_mode(ide_drive_t *drive, const u8 speed)
* We wrap the DMA activate to set the vdma flag. This is needed
* so that the IDE DMA layer issues PIO not DMA commands over the
* DMA channel
+ *
+ * ATAPI is harder so disable it for now using IDE_HFLAG_NO_ATAPI_DMA
*/
-
-static int cs5520_dma_on(ide_drive_t *drive)
+
+static void cs5520_dma_host_set(ide_drive_t *drive, int on)
{
- /* ATAPI is harder so leave it for now */
- drive->vdma = 1;
- return 0;
+ drive->vdma = on;
+ ide_dma_host_set(drive, on);
}
static void __devinit init_hwif_cs5520(ide_hwif_t *hwif)
@@ -126,7 +121,7 @@ static void __devinit init_hwif_cs5520(ide_hwif_t *hwif)
if (hwif->dma_base == 0)
return;
- hwif->ide_dma_on = &cs5520_dma_on;
+ hwif->dma_host_set = &cs5520_dma_host_set;
}
#define DECLARE_CS_DEV(name_str) \
diff --git a/drivers/ide/pci/cy82c693.c b/drivers/ide/pci/cy82c693.c
index 1cd4e9cb052..3ec4c659a37 100644
--- a/drivers/ide/pci/cy82c693.c
+++ b/drivers/ide/pci/cy82c693.c
@@ -1,5 +1,5 @@
/*
- * linux/drivers/ide/pci/cy82c693.c Version 0.42 Oct 23, 2007
+ * linux/drivers/ide/pci/cy82c693.c Version 0.44 Nov 8, 2007
*
* Copyright (C) 1998-2000 Andreas S. Krebs (akrebs@altavista.net), Maintainer
* Copyright (C) 1998-2002 Andre Hedrick <andre@linux-ide.org>, Integrator
@@ -176,17 +176,12 @@ static void compute_clocks (u8 pio, pio_clocks_t *p_pclk)
* set DMA mode a specific channel for CY82C693
*/
-static void cy82c693_dma_enable (ide_drive_t *drive, int mode, int single)
+static void cy82c693_set_dma_mode(ide_drive_t *drive, const u8 mode)
{
- u8 index = 0, data = 0;
+ ide_hwif_t *hwif = drive->hwif;
+ u8 single = (mode & 0x10) >> 4, index = 0, data = 0;
- if (mode>2) /* make sure we set a valid mode */
- mode = 2;
-
- if (mode > drive->id->tDMA) /* to be absolutly sure we have a valid mode */
- mode = drive->id->tDMA;
-
- index = (HWIF(drive)->channel==0) ? CY82_INDEX_CHANNEL0 : CY82_INDEX_CHANNEL1;
+ index = hwif->channel ? CY82_INDEX_CHANNEL1 : CY82_INDEX_CHANNEL0;
#if CY82C693_DEBUG_LOGS
/* for debug let's show the previous values */
@@ -199,7 +194,7 @@ static void cy82c693_dma_enable (ide_drive_t *drive, int mode, int single)
(data&0x3), ((data>>2)&1));
#endif /* CY82C693_DEBUG_LOGS */
- data = (u8)mode|(u8)(single<<2);
+ data = (mode & 3) | (single << 2);
outb(index, CY82_INDEX_PORT);
outb(data, CY82_DATA_PORT);
@@ -207,7 +202,7 @@ static void cy82c693_dma_enable (ide_drive_t *drive, int mode, int single)
#if CY82C693_DEBUG_INFO
printk(KERN_INFO "%s (ch=%d, dev=%d): set DMA mode to %d (single=%d)\n",
drive->name, HWIF(drive)->channel, drive->select.b.unit,
- mode, single);
+ mode & 3, single);
#endif /* CY82C693_DEBUG_INFO */
/*
@@ -230,39 +225,6 @@ static void cy82c693_dma_enable (ide_drive_t *drive, int mode, int single)
#endif /* CY82C693_DEBUG_INFO */
}
-/*
- * used to set DMA mode for CY82C693 (single and multi modes)
- */
-static int cy82c693_ide_dma_on (ide_drive_t *drive)
-{
- struct hd_driveid *id = drive->id;
-
-#if CY82C693_DEBUG_INFO
- printk (KERN_INFO "dma_on: %s\n", drive->name);
-#endif /* CY82C693_DEBUG_INFO */
-
- if (id != NULL) {
- /* Enable DMA on any drive that has DMA
- * (multi or single) enabled
- */
- if (id->field_valid & 2) { /* regular DMA */
- int mmode, smode;
-
- mmode = id->dma_mword & (id->dma_mword >> 8);
- smode = id->dma_1word & (id->dma_1word >> 8);
-
- if (mmode != 0) {
- /* enable multi */
- cy82c693_dma_enable(drive, (mmode >> 1), 0);
- } else if (smode != 0) {
- /* enable single */
- cy82c693_dma_enable(drive, (smode >> 1), 1);
- }
- }
- }
- return __ide_dma_on(drive);
-}
-
static void cy82c693_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
ide_hwif_t *hwif = HWIF(drive);
@@ -429,11 +391,7 @@ static unsigned int __devinit init_chipset_cy82c693(struct pci_dev *dev, const c
static void __devinit init_hwif_cy82c693(ide_hwif_t *hwif)
{
hwif->set_pio_mode = &cy82c693_set_pio_mode;
-
- if (hwif->dma_base == 0)
- return;
-
- hwif->ide_dma_on = &cy82c693_ide_dma_on;
+ hwif->set_dma_mode = &cy82c693_set_dma_mode;
}
static void __devinit init_iops_cy82c693(ide_hwif_t *hwif)
@@ -454,11 +412,11 @@ static const struct ide_port_info cy82c693_chipset __devinitdata = {
.init_iops = init_iops_cy82c693,
.init_hwif = init_hwif_cy82c693,
.chipset = ide_cy82c693,
- .host_flags = IDE_HFLAG_SINGLE | IDE_HFLAG_TRUST_BIOS_FOR_DMA |
+ .host_flags = IDE_HFLAG_SINGLE | IDE_HFLAG_CY82C693 |
IDE_HFLAG_BOOTABLE,
.pio_mask = ATA_PIO4,
- .swdma_mask = ATA_SWDMA2_ONLY,
- .mwdma_mask = ATA_MWDMA2_ONLY,
+ .swdma_mask = ATA_SWDMA2,
+ .mwdma_mask = ATA_MWDMA2,
};
static int __devinit cy82c693_init_one(struct pci_dev *dev, const struct pci_device_id *id)
diff --git a/drivers/ide/pci/delkin_cb.c b/drivers/ide/pci/delkin_cb.c
index 83829081640..26aa492071b 100644
--- a/drivers/ide/pci/delkin_cb.c
+++ b/drivers/ide/pci/delkin_cb.c
@@ -80,7 +80,7 @@ delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
hw.irq = dev->irq;
hw.chipset = ide_pci; /* this enables IRQ sharing */
- rc = ide_register_hw(&hw, &ide_undecoded_slave, 0, &hwif);
+ rc = ide_register_hw(&hw, &ide_undecoded_slave, &hwif);
if (rc < 0) {
printk(KERN_ERR "delkin_cb: ide_register_hw failed (%d)\n", rc);
pci_disable_device(dev);
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index 3777fb8c804..12685939a81 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -725,15 +725,18 @@ static void hpt3xx_set_pio_mode(ide_drive_t *drive, const u8 pio)
hpt3xx_set_mode(drive, XFER_PIO_0 + pio);
}
-static int hpt3xx_quirkproc(ide_drive_t *drive)
+static void hpt3xx_quirkproc(ide_drive_t *drive)
{
struct hd_driveid *id = drive->id;
const char **list = quirk_drives;
while (*list)
- if (strstr(id->model, *list++))
- return 1;
- return 0;
+ if (strstr(id->model, *list++)) {
+ drive->quirk_list = 1;
+ return;
+ }
+
+ drive->quirk_list = 0;
}
static void hpt3xx_maskproc(ide_drive_t *drive, int mask)
diff --git a/drivers/ide/pci/it821x.c b/drivers/ide/pci/it821x.c
index 99b7d763b6c..e610a5340fd 100644
--- a/drivers/ide/pci/it821x.c
+++ b/drivers/ide/pci/it821x.c
@@ -431,33 +431,29 @@ static u8 __devinit ata66_it821x(ide_hwif_t *hwif)
}
/**
- * it821x_fixup - post init callback
- * @hwif: interface
+ * it821x_quirkproc - post init callback
+ * @drive: drive
*
- * This callback is run after the drives have been probed but
+ * This callback is run after the drive has been probed but
* before anything gets attached. It allows drivers to do any
* final tuning that is needed, or fixups to work around bugs.
*/
-static void __devinit it821x_fixups(ide_hwif_t *hwif)
+static void __devinit it821x_quirkproc(ide_drive_t *drive)
{
- struct it821x_dev *itdev = ide_get_hwifdata(hwif);
- int i;
+ struct it821x_dev *itdev = ide_get_hwifdata(drive->hwif);
+ struct hd_driveid *id = drive->id;
+ u16 *idbits = (u16 *)drive->id;
- if(!itdev->smart) {
+ if (!itdev->smart) {
/*
* If we are in pass through mode then not much
* needs to be done, but we do bother to clear the
* IRQ mask as we may well be in PIO (eg rev 0x10)
* for now and we know unmasking is safe on this chipset.
*/
- for (i = 0; i < 2; i++) {
- ide_drive_t *drive = &hwif->drives[i];
- if(drive->present)
- drive->unmask = 1;
- }
- return;
- }
+ drive->unmask = 1;
+ } else {
/*
* Perform fixups on smart mode. We need to "lose" some
* capabilities the firmware lacks but does not filter, and
@@ -465,16 +461,6 @@ static void __devinit it821x_fixups(ide_hwif_t *hwif)
* in RAID mode.
*/
- for(i = 0; i < 2; i++) {
- ide_drive_t *drive = &hwif->drives[i];
- struct hd_driveid *id;
- u16 *idbits;
-
- if(!drive->present)
- continue;
- id = drive->id;
- idbits = (u16 *)drive->id;
-
/* Check for RAID v native */
if(strstr(id->model, "Integrated Technology Express")) {
/* In raid mode the ident block is slightly buggy
@@ -537,6 +523,8 @@ static void __devinit init_hwif_it821x(ide_hwif_t *hwif)
struct it821x_dev *idev = kzalloc(sizeof(struct it821x_dev), GFP_KERNEL);
u8 conf;
+ hwif->quirkproc = &it821x_quirkproc;
+
if (idev == NULL) {
printk(KERN_ERR "it821x: out of memory, falling back to legacy behaviour.\n");
return;
@@ -633,7 +621,6 @@ static unsigned int __devinit init_chipset_it821x(struct pci_dev *dev, const cha
.name = name_str, \
.init_chipset = init_chipset_it821x, \
.init_hwif = init_hwif_it821x, \
- .fixup = it821x_fixups, \
.host_flags = IDE_HFLAG_BOOTABLE, \
.pio_mask = ATA_PIO4, \
}
diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index ef4a99b99d1..89d2363a1eb 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -203,14 +203,17 @@ static u8 pdcnew_cable_detect(ide_hwif_t *hwif)
return ATA_CBL_PATA80;
}
-static int pdcnew_quirkproc(ide_drive_t *drive)
+static void pdcnew_quirkproc(ide_drive_t *drive)
{
const char **list, *model = drive->id->model;
for (list = pdc_quirk_drives; *list != NULL; list++)
- if (strstr(model, *list) != NULL)
- return 2;
- return 0;
+ if (strstr(model, *list) != NULL) {
+ drive->quirk_list = 2;
+ return;
+ }
+
+ drive->quirk_list = 0;
}
static void pdcnew_reset(ide_drive_t *drive)
diff --git a/drivers/ide/pci/pdc202xx_old.c b/drivers/ide/pci/pdc202xx_old.c
index 67b2781e221..3a1e081fe39 100644
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -176,14 +176,17 @@ static void pdc_old_disable_66MHz_clock(ide_hwif_t *hwif)
outb(clock & ~(hwif->channel ? 0x08 : 0x02), clock_reg);
}
-static int pdc202xx_quirkproc (ide_drive_t *drive)
+static void pdc202xx_quirkproc(ide_drive_t *drive)
{
const char **list, *model = drive->id->model;
for (list = pdc_quirk_drives; *list != NULL; list++)
- if (strstr(model, *list) != NULL)
- return 2;
- return 0;
+ if (strstr(model, *list) != NULL) {
+ drive->quirk_list = 2;
+ return;
+ }
+
+ drive->quirk_list = 0;
}
static void pdc202xx_old_ide_dma_start(ide_drive_t *drive)
diff --git a/drivers/ide/pci/sc1200.c b/drivers/ide/pci/sc1200.c
index fef20bd4aa7..32fdf53379f 100644
--- a/drivers/ide/pci/sc1200.c
+++ b/drivers/ide/pci/sc1200.c
@@ -220,9 +220,9 @@ static void sc1200_set_pio_mode(ide_drive_t *drive, const u8 pio)
}
if (mode != -1) {
printk("SC1200: %s: changing (U)DMA mode\n", drive->name);
- hwif->dma_off_quietly(drive);
- if (ide_set_dma_mode(drive, mode) == 0)
- hwif->dma_host_on(drive);
+ ide_dma_off_quietly(drive);
+ if (ide_set_dma_mode(drive, mode) == 0 && drive->using_dma)
+ hwif->dma_host_set(drive, 1);
return;
}
diff --git a/drivers/ide/pci/serverworks.c b/drivers/ide/pci/serverworks.c
index e9bd269547b..877c09bf482 100644
--- a/drivers/ide/pci/serverworks.c
+++ b/drivers/ide/pci/serverworks.c
@@ -164,25 +164,12 @@ static void svwks_set_dma_mode(ide_drive_t *drive, const u8 speed)
ultra_timing &= ~(0x0F << (4*unit));
ultra_enable &= ~(0x01 << drive->dn);
- switch(speed) {
- case XFER_MW_DMA_2:
- case XFER_MW_DMA_1:
- case XFER_MW_DMA_0:
- dma_timing |= dma_modes[speed - XFER_MW_DMA_0];
- break;
-
- case XFER_UDMA_5:
- case XFER_UDMA_4:
- case XFER_UDMA_3:
- case XFER_UDMA_2:
- case XFER_UDMA_1:
- case XFER_UDMA_0:
- dma_timing |= dma_modes[2];
- ultra_timing |= ((udma_modes[speed - XFER_UDMA_0]) << (4*unit));
- ultra_enable |= (0x01 << drive->dn);
- default:
- break;
- }
+ if (speed >= XFER_UDMA_0) {
+ dma_timing |= dma_modes[2];
+ ultra_timing |= (udma_modes[speed - XFER_UDMA_0] << (4 * unit));
+ ultra_enable |= (0x01 << drive->dn);
+ } else if (speed >= XFER_MW_DMA_0)
+ dma_timing |= dma_modes[speed - XFER_MW_DMA_0];
pci_write_config_byte(dev, drive_pci2[drive->dn], dma_timing);
pci_write_config_byte(dev, (0x56|hwif->channel), ultra_timing);
diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/pci/sgiioc4.c
index 7e9dade5648..9e0be7d5498 100644
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -277,21 +277,6 @@ sgiioc4_ide_dma_end(ide_drive_t * drive)
return dma_stat;
}
-static int
-sgiioc4_ide_dma_on(ide_drive_t * drive)
-{
- drive->using_dma = 1;
-
- return 0;
-}
-
-static void sgiioc4_dma_off_quietly(ide_drive_t *drive)
-{
- drive->using_dma = 0;
-
- drive->hwif->dma_host_off(drive);
-}
-
static void sgiioc4_set_dma_mode(ide_drive_t *drive, const u8 speed)
{
}
@@ -303,13 +288,10 @@ sgiioc4_ide_dma_test_irq(ide_drive_t * drive)
return sgiioc4_checkirq(HWIF(drive));
}
-static void sgiioc4_dma_host_on(ide_drive_t * drive)
-{
-}
-
-static void sgiioc4_dma_host_off(ide_drive_t * drive)
+static void sgiioc4_dma_host_set(ide_drive_t *drive, int on)
{
- sgiioc4_clearirq(drive);
+ if (!on)
+ sgiioc4_clearirq(drive);
}
static void
@@ -593,14 +575,11 @@ ide_init_sgiioc4(ide_hwif_t * hwif)
hwif->mwdma_mask = ATA_MWDMA2_ONLY;
+ hwif->dma_host_set = &sgiioc4_dma_host_set;
hwif->dma_setup = &sgiioc4_ide_dma_setup;
hwif->dma_start = &sgiioc4_ide_dma_start;
hwif->ide_dma_end = &sgiioc4_ide_dma_end;
- hwif->ide_dma_on = &sgiioc4_ide_dma_on;
- hwif->dma_off_quietly = &sgiioc4_dma_off_quietly;
hwif->ide_dma_test_irq = &sgiioc4_ide_dma_test_irq;
- hwif->dma_host_on = &sgiioc4_dma_host_on;
- hwif->dma_host_off = &sgiioc4_dma_host_off;
hwif->dma_lost_irq = &sgiioc4_dma_lost_irq;
hwif->dma_timeout = &ide_dma_timeout;
}
@@ -614,6 +593,7 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev)
ide_hwif_t *hwif;
int h;
u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+ hw_regs_t hw;
/*
* Find an empty HWIF; if none available, return -ENOMEM.
@@ -653,21 +633,16 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev)
return -ENOMEM;
}
- if (hwif->io_ports[IDE_DATA_OFFSET] != cmd_base) {
- hw_regs_t hw;
-
- /* Initialize the IO registers */
- memset(&hw, 0, sizeof(hw));
- sgiioc4_init_hwif_ports(&hw, cmd_base, ctl, irqport);
- memcpy(hwif->io_ports, hw.io_ports, sizeof(hwif->io_ports));
- hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
- }
+ /* Initialize the IO registers */
+ memset(&hw, 0, sizeof(hw));
+ sgiioc4_init_hwif_ports(&hw, cmd_base, ctl, irqport);
+ hw.irq = dev->irq;
+ hw.chipset = ide_pci;
+ hw.dev = &dev->dev;
+ ide_init_port_hw(hwif, &hw);
- hwif->irq = dev->irq;
- hwif->chipset = ide_pci;
hwif->pci_dev = dev;
hwif->channel = 0; /* Single Channel chip */
- hwif->gendev.parent = &dev->dev;/* setup proper ancestral information */
/* The IOC4 uses MMIO rather than Port IO. */
default_hwif_mmiops(hwif);
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index 7b45eaf5afd..908f37b4e0e 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -713,9 +713,6 @@ static int is_dev_seagate_sata(ide_drive_t *drive)
const char *s = &drive->id->model[0];
unsigned len;
- if (!drive->present)
- return 0;
-
len = strnlen(s, sizeof(drive->id->model));
if ((len > 4) && (!memcmp(s, "ST", 2))) {
@@ -730,18 +727,20 @@ static int is_dev_seagate_sata(ide_drive_t *drive)
}
/**
- * siimage_fixup - post probe fixups
- * @hwif: interface to fix up
+ * sil_quirkproc - post probe fixups
+ * @drive: drive
*
* Called after drive probe we use this to decide whether the
* Seagate fixup must be applied. This used to be in init_iops but
* that can occur before we know what drives are present.
*/
-static void __devinit siimage_fixup(ide_hwif_t *hwif)
+static void __devinit sil_quirkproc(ide_drive_t *drive)
{
+ ide_hwif_t *hwif = drive->hwif;
+
/* Try and raise the rqsize */
- if (!is_sata(hwif) || !is_dev_seagate_sata(&hwif->drives[0]))
+ if (!is_sata(hwif) || !is_dev_seagate_sata(drive))
hwif->rqsize = 128;
}
@@ -804,6 +803,7 @@ static void __devinit init_hwif_siimage(ide_hwif_t *hwif)
hwif->set_pio_mode = &sil_set_pio_mode;
hwif->set_dma_mode = &sil_set_dma_mode;
+ hwif->quirkproc = &sil_quirkproc;
if (sata) {
static int first = 1;
@@ -842,7 +842,6 @@ static void __devinit init_hwif_siimage(ide_hwif_t *hwif)
.init_chipset = init_chipset_siimage, \
.init_iops = init_iops_siimage, \
.init_hwif = init_hwif_siimage, \
- .fixup = siimage_fixup, \
.host_flags = IDE_HFLAG_BOOTABLE, \
.pio_mask = ATA_PIO4, \
.mwdma_mask = ATA_MWDMA2, \
diff --git a/drivers/ide/pci/sl82c105.c b/drivers/ide/pci/sl82c105.c
index 069f104fdce..c7a125b66c2 100644
--- a/drivers/ide/pci/sl82c105.c
+++ b/drivers/ide/pci/sl82c105.c
@@ -13,6 +13,7 @@
* -- Benjamin Herrenschmidt (01/11/03) benh@kernel.crashing.org
*
* Copyright (C) 2006-2007 MontaVista Software, Inc. <source@mvista.com>
+ * Copyright (C) 2007 Bartlomiej Zolnierkiewicz
*/
#include <linux/types.h>
@@ -90,14 +91,8 @@ static void sl82c105_set_pio_mode(ide_drive_t *drive, const u8 pio)
drive->drive_data &= 0xffff0000;
drive->drive_data |= drv_ctrl;
- if (!drive->using_dma) {
- /*
- * If we are actually using MW DMA, then we can not
- * reprogram the interface drive control register.
- */
- pci_write_config_word(dev, reg, drv_ctrl);
- pci_read_config_word (dev, reg, &drv_ctrl);
- }
+ pci_write_config_word(dev, reg, drv_ctrl);
+ pci_read_config_word (dev, reg, &drv_ctrl);
printk(KERN_DEBUG "%s: selected %s (%dns) (%04X)\n", drive->name,
ide_xfer_verbose(pio + XFER_PIO_0),
@@ -123,17 +118,6 @@ static void sl82c105_set_dma_mode(ide_drive_t *drive, const u8 speed)
*/
drive->drive_data &= 0x0000ffff;
drive->drive_data |= (unsigned long)drv_ctrl << 16;
-
- /*
- * If we are already using DMA, we just reprogram
- * the drive control register.
- */
- if (drive->using_dma) {
- struct pci_dev *dev = HWIF(drive)->pci_dev;
- int reg = 0x44 + drive->dn * 4;
-
- pci_write_config_word(dev, reg, drv_ctrl);
- }
}
/*
@@ -201,6 +185,11 @@ static void sl82c105_dma_start(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
+ int reg = 0x44 + drive->dn * 4;
+
+ DBG(("%s(drive:%s)\n", __FUNCTION__, drive->name));
+
+ pci_write_config_word(dev, reg, drive->drive_data >> 16);
sl82c105_reset_host(dev);
ide_dma_start(drive);
@@ -214,64 +203,24 @@ static void sl82c105_dma_timeout(ide_drive_t *drive)
ide_dma_timeout(drive);
}
-static int sl82c105_ide_dma_on(ide_drive_t *drive)
-{
- struct pci_dev *dev = HWIF(drive)->pci_dev;
- int rc, reg = 0x44 + drive->dn * 4;
-
- DBG(("sl82c105_ide_dma_on(drive:%s)\n", drive->name));
-
- rc = __ide_dma_on(drive);
- if (rc == 0) {
- pci_write_config_word(dev, reg, drive->drive_data >> 16);
-
- printk(KERN_INFO "%s: DMA enabled\n", drive->name);
- }
- return rc;
-}
-
-static void sl82c105_dma_off_quietly(ide_drive_t *drive)
+static int sl82c105_dma_end(ide_drive_t *drive)
{
struct pci_dev *dev = HWIF(drive)->pci_dev;
int reg = 0x44 + drive->dn * 4;
+ int ret;
- DBG(("sl82c105_dma_off_quietly(drive:%s)\n", drive->name));
+ DBG(("%s(drive:%s)\n", __FUNCTION__, drive->name));
- pci_write_config_word(dev, reg, drive->drive_data);
+ ret = __ide_dma_end(drive);
- ide_dma_off_quietly(drive);
-}
+ pci_write_config_word(dev, reg, drive->drive_data);
-/*
- * Ok, that is nasty, but we must make sure the DMA timings
- * won't be used for a PIO access. The solution here is
- * to make sure the 16 bits mode is diabled on the channel
- * when DMA is enabled, thus causing the chip to use PIO0
- * timings for those operations.
- */
-static void sl82c105_selectproc(ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
- u32 val, old, mask;
-
- //DBG(("sl82c105_selectproc(drive:%s)\n", drive->name));
-
- mask = hwif->channel ? CTRL_P1F16 : CTRL_P0F16;
- old = val = (u32)pci_get_drvdata(dev);
- if (drive->using_dma)
- val &= ~mask;
- else
- val |= mask;
- if (old != val) {
- pci_write_config_dword(dev, 0x40, val);
- pci_set_drvdata(dev, (void *)val);
- }
+ return ret;
}
/*
* ATA reset will clear the 16 bits mode in the control
- * register, we need to update our cache
+ * register, we need to reprogram it
*/
static void sl82c105_resetproc(ide_drive_t *drive)
{
@@ -281,7 +230,8 @@ static void sl82c105_resetproc(ide_drive_t *drive)
DBG(("sl82c105_resetproc(drive:%s)\n", drive->name));
pci_read_config_dword(dev, 0x40, &val);
- pci_set_drvdata(dev, (void *)val);
+ val |= (CTRL_P1F16 | CTRL_P0F16);
+ pci_write_config_dword(dev, 0x40, val);
}
/*
@@ -334,7 +284,6 @@ static unsigned int __devinit init_chipset_sl82c105(struct pci_dev *dev, const c
pci_read_config_dword(dev, 0x40, &val);
val |= CTRL_P0EN | CTRL_P0F16 | CTRL_P1F16;
pci_write_config_dword(dev, 0x40, val);
- pci_set_drvdata(dev, (void *)val);
return dev->irq;
}
@@ -350,7 +299,6 @@ static void __devinit init_hwif_sl82c105(ide_hwif_t *hwif)
hwif->set_pio_mode = &sl82c105_set_pio_mode;
hwif->set_dma_mode = &sl82c105_set_dma_mode;
- hwif->selectproc = &sl82c105_selectproc;
hwif->resetproc = &sl82c105_resetproc;
if (!hwif->dma_base)
@@ -369,10 +317,9 @@ static void __devinit init_hwif_sl82c105(ide_hwif_t *hwif)
hwif->mwdma_mask = ATA_MWDMA2;
- hwif->ide_dma_on = &sl82c105_ide_dma_on;
- hwif->dma_off_quietly = &sl82c105_dma_off_quietly;
hwif->dma_lost_irq = &sl82c105_dma_lost_irq;
hwif->dma_start = &sl82c105_dma_start;
+ hwif->ide_dma_end = &sl82c105_dma_end;
hwif->dma_timeout = &sl82c105_dma_timeout;
if (hwif->mate)
diff --git a/drivers/ide/pci/trm290.c b/drivers/ide/pci/trm290.c
index 0151d7fdfb8..04cd893e1ab 100644
--- a/drivers/ide/pci/trm290.c
+++ b/drivers/ide/pci/trm290.c
@@ -241,11 +241,7 @@ static int trm290_ide_dma_test_irq (ide_drive_t *drive)
return (status == 0x00ff);
}
-static void trm290_dma_host_on(ide_drive_t *drive)
-{
-}
-
-static void trm290_dma_host_off(ide_drive_t *drive)
+static void trm290_dma_host_set(ide_drive_t *drive, int on)
{
}
@@ -289,8 +285,7 @@ static void __devinit init_hwif_trm290(ide_hwif_t *hwif)
ide_setup_dma(hwif, (hwif->config_data + 4) ^ (hwif->channel ? 0x0080 : 0x0000), 3);
- hwif->dma_host_off = &trm290_dma_host_off;
- hwif->dma_host_on = &trm290_dma_host_on;
+ hwif->dma_host_set = &trm290_dma_host_set;
hwif->dma_setup = &trm290_dma_setup;
hwif->dma_exec_cmd = &trm290_dma_exec_cmd;
hwif->dma_start = &trm290_dma_start;
diff --git a/drivers/ide/ppc/Makefile b/drivers/ide/ppc/Makefile
new file mode 100644
index 00000000000..65af5848b28
--- /dev/null
+++ b/drivers/ide/ppc/Makefile
@@ -0,0 +1,3 @@
+
+obj-$(CONFIG_BLK_DEV_IDE_PMAC) += pmac.o
+obj-$(CONFIG_BLK_DEV_MPC8xx_IDE) += mpc8xx.o
diff --git a/drivers/ide/ppc/mpc8xx.c b/drivers/ide/ppc/mpc8xx.c
index 5f0da35ab5a..3fd5d45b5e0 100644
--- a/drivers/ide/ppc/mpc8xx.c
+++ b/drivers/ide/ppc/mpc8xx.c
@@ -838,3 +838,21 @@ void m8xx_ide_init(void)
ppc_ide_md.default_io_base = m8xx_ide_default_io_base;
ppc_ide_md.ide_init_hwif = m8xx_ide_init_hwif_ports;
}
+
+static int __init mpc8xx_ide_probe(void)
+{
+ u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+
+#ifdef IDE0_BASE_OFFSET
+ idx[0] = 0;
+#ifdef IDE1_BASE_OFFSET
+ idx[1] = 1;
+#endif
+#endif
+
+ ide_device_add(idx);
+
+ return 0;
+}
+
+module_init(mpc8xx_ide_probe);
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index 3dce80092ff..736d12c8e68 100644
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -1012,12 +1012,11 @@ pmac_ide_do_resume(ide_hwif_t *hwif)
* rare machines unfortunately, but it's better this way.
*/
static int
-pmac_ide_setup_device(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
+pmac_ide_setup_device(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif, hw_regs_t *hw)
{
struct device_node *np = pmif->node;
const int *bidp;
u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
- hw_regs_t hw;
pmif->cable_80 = 0;
pmif->broken_dma = pmif->broken_dma_warn = 0;
@@ -1103,11 +1102,9 @@ pmac_ide_setup_device(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
/* Tell common code _not_ to mess with resources */
hwif->mmio = 1;
hwif->hwif_data = pmif;
- memset(&hw, 0, sizeof(hw));
- pmac_ide_init_hwif_ports(&hw, pmif->regbase, 0, &hwif->irq);
- memcpy(hwif->io_ports, hw.io_ports, sizeof(hwif->io_ports));
- hwif->chipset = ide_pmac;
- hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET] || pmif->mediabay;
+ hw->chipset = ide_pmac;
+ ide_init_port_hw(hwif, hw);
+ hwif->noprobe = pmif->mediabay;
hwif->hold = pmif->mediabay;
hwif->cbl = pmif->cable_80 ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
hwif->drives[0].unmask = 1;
@@ -1136,8 +1133,6 @@ pmac_ide_setup_device(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
hwif->noprobe = 0;
#endif /* CONFIG_PMAC_MEDIABAY */
- hwif->sg_max_nents = MAX_DCMDS;
-
#ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
/* has a DBDMA controller channel */
if (pmif->dma_regs)
@@ -1163,6 +1158,7 @@ pmac_ide_macio_attach(struct macio_dev *mdev, const struct of_device_id *match)
ide_hwif_t *hwif;
pmac_ide_hwif_t *pmif;
int i, rc;
+ hw_regs_t hw;
i = 0;
while (i < MAX_HWIFS && (ide_hwifs[i].io_ports[IDE_DATA_OFFSET] != 0
@@ -1205,7 +1201,6 @@ pmac_ide_macio_attach(struct macio_dev *mdev, const struct of_device_id *match)
regbase = (unsigned long) base;
hwif->pci_dev = mdev->bus->pdev;
- hwif->gendev.parent = &mdev->ofdev.dev;
pmif->mdev = mdev;
pmif->node = mdev->ofdev.node;
@@ -1223,7 +1218,12 @@ pmac_ide_macio_attach(struct macio_dev *mdev, const struct of_device_id *match)
#endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
dev_set_drvdata(&mdev->ofdev.dev, hwif);
- rc = pmac_ide_setup_device(pmif, hwif);
+ memset(&hw, 0, sizeof(hw));
+ pmac_ide_init_hwif_ports(&hw, pmif->regbase, 0, NULL);
+ hw.irq = irq;
+ hw.dev = &mdev->ofdev.dev;
+
+ rc = pmac_ide_setup_device(pmif, hwif, &hw);
if (rc != 0) {
/* The inteface is released to the common IDE layer */
dev_set_drvdata(&mdev->ofdev.dev, NULL);
@@ -1282,6 +1282,7 @@ pmac_ide_pci_attach(struct pci_dev *pdev, const struct pci_device_id *id)
void __iomem *base;
unsigned long rbase, rlen;
int i, rc;
+ hw_regs_t hw;
np = pci_device_to_OF_node(pdev);
if (np == NULL) {
@@ -1315,7 +1316,6 @@ pmac_ide_pci_attach(struct pci_dev *pdev, const struct pci_device_id *id)
}
hwif->pci_dev = pdev;
- hwif->gendev.parent = &pdev->dev;
pmif->mdev = NULL;
pmif->node = np;
@@ -1332,7 +1332,12 @@ pmac_ide_pci_attach(struct pci_dev *pdev, const struct pci_device_id *id)
pci_set_drvdata(pdev, hwif);
- rc = pmac_ide_setup_device(pmif, hwif);
+ memset(&hw, 0, sizeof(hw));
+ pmac_ide_init_hwif_ports(&hw, pmif->regbase, 0, NULL);
+ hw.irq = pdev->irq;
+ hw.dev = &pdev->dev;
+
+ rc = pmac_ide_setup_device(pmif, hwif, &hw);
if (rc != 0) {
/* The inteface is released to the common IDE layer */
pci_set_drvdata(pdev, NULL);
@@ -1698,11 +1703,7 @@ pmac_ide_dma_test_irq (ide_drive_t *drive)
return 1;
}
-static void pmac_ide_dma_host_off(ide_drive_t *drive)
-{
-}
-
-static void pmac_ide_dma_host_on(ide_drive_t *drive)
+static void pmac_ide_dma_host_set(ide_drive_t *drive, int on)
{
}
@@ -1748,15 +1749,14 @@ pmac_ide_setup_dma(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
return;
}
- hwif->dma_off_quietly = &ide_dma_off_quietly;
- hwif->ide_dma_on = &__ide_dma_on;
+ hwif->sg_max_nents = MAX_DCMDS;
+
+ hwif->dma_host_set = &pmac_ide_dma_host_set;
hwif->dma_setup = &pmac_ide_dma_setup;
hwif->dma_exec_cmd = &pmac_ide_dma_exec_cmd;
hwif->dma_start = &pmac_ide_dma_start;
hwif->ide_dma_end = &pmac_ide_dma_end;
hwif->ide_dma_test_irq = &pmac_ide_dma_test_irq;
- hwif->dma_host_off = &pmac_ide_dma_host_off;
- hwif->dma_host_on = &pmac_ide_dma_host_on;
hwif->dma_timeout = &ide_dma_timeout;
hwif->dma_lost_irq = &pmac_ide_dma_lost_irq;
@@ -1786,3 +1786,5 @@ pmac_ide_setup_dma(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
}
#endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
+
+module_init(pmac_ide_probe);
diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c
index d2cd5a3d38f..676c66e7288 100644
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -165,13 +165,17 @@ static unsigned long ide_get_or_set_dma_base(const struct ide_port_info *d, ide_
dma_base = pci_resource_start(dev, baridx);
- if (dma_base == 0)
+ if (dma_base == 0) {
printk(KERN_ERR "%s: DMA base is invalid\n", d->name);
+ return 0;
+ }
}
- if ((d->host_flags & IDE_HFLAG_CS5520) == 0 && dma_base) {
+ if (hwif->channel)
+ dma_base += 8;
+
+ if ((d->host_flags & IDE_HFLAG_CS5520) == 0) {
u8 simplex_stat = 0;
- dma_base += hwif->channel ? 8 : 0;
switch(dev->device) {
case PCI_DEVICE_ID_AL_M5219:
@@ -359,6 +363,8 @@ static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev, const struct ide_port
unsigned long ctl = 0, base = 0;
ide_hwif_t *hwif;
u8 bootable = (d->host_flags & IDE_HFLAG_BOOTABLE) ? 1 : 0;
+ u8 oldnoprobe = 0;
+ struct hw_regs_s hw;
if ((d->host_flags & IDE_HFLAG_ISA_PORTS) == 0) {
/* Possibly we should fail if these checks report true */
@@ -381,26 +387,25 @@ static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev, const struct ide_port
}
if ((hwif = ide_match_hwif(base, bootable, d->name)) == NULL)
return NULL; /* no room in ide_hwifs[] */
- if (hwif->io_ports[IDE_DATA_OFFSET] != base ||
- hwif->io_ports[IDE_CONTROL_OFFSET] != (ctl | 2)) {
- hw_regs_t hw;
-
- memset(&hw, 0, sizeof(hw));
-#ifndef CONFIG_IDE_ARCH_OBSOLETE_INIT
- ide_std_init_ports(&hw, base, ctl | 2);
-#else
- ide_init_hwif_ports(&hw, base, ctl | 2, NULL);
-#endif
- memcpy(hwif->io_ports, hw.io_ports, sizeof(hwif->io_ports));
- hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
- }
- hwif->chipset = d->chipset ? d->chipset : ide_pci;
+
+ memset(&hw, 0, sizeof(hw));
+ hw.irq = hwif->irq ? hwif->irq : irq;
+ hw.dev = &dev->dev;
+ hw.chipset = d->chipset ? d->chipset : ide_pci;
+ ide_std_init_ports(&hw, base, ctl | 2);
+
+ if (hwif->io_ports[IDE_DATA_OFFSET] == base &&
+ hwif->io_ports[IDE_CONTROL_OFFSET] == (ctl | 2))
+ oldnoprobe = hwif->noprobe;
+
+ ide_init_port_hw(hwif, &hw);
+
+ hwif->noprobe = oldnoprobe;
+
hwif->pci_dev = dev;
hwif->cds = d;
hwif->channel = port;
- if (!hwif->irq)
- hwif->irq = irq;
if (mate) {
hwif->mate = mate;
mate->mate = hwif;
@@ -535,12 +540,8 @@ void ide_pci_setup_ports(struct pci_dev *dev, const struct ide_port_info *d, int
if ((hwif = ide_hwif_configure(dev, d, mate, port, pciirq)) == NULL)
continue;
- /* setup proper ancestral information */
- hwif->gendev.parent = &dev->dev;
-
*(idx + port) = hwif->index;
-
if (d->init_iops)
d->init_iops(hwif);
@@ -551,8 +552,6 @@ void ide_pci_setup_ports(struct pci_dev *dev, const struct ide_port_info *d, int
(d->host_flags & IDE_HFLAG_FORCE_LEGACY_IRQS))
hwif->irq = port ? 15 : 14;
- hwif->fixup = d->fixup;
-
hwif->host_flags = d->host_flags;
hwif->pio_mask = d->pio_mask;
@@ -699,105 +698,3 @@ out:
}
EXPORT_SYMBOL_GPL(ide_setup_pci_devices);
-
-#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
-/*
- * Module interfaces
- */
-
-static int pre_init = 1; /* Before first ordered IDE scan */
-static LIST_HEAD(ide_pci_drivers);
-
-/*
- * __ide_pci_register_driver - attach IDE driver
- * @driver: pci driver
- * @module: owner module of the driver
- *
- * Registers a driver with the IDE layer. The IDE layer arranges that
- * boot time setup is done in the expected device order and then
- * hands the controllers off to the core PCI code to do the rest of
- * the work.
- *
- * Returns are the same as for pci_register_driver
- */
-
-int __ide_pci_register_driver(struct pci_driver *driver, struct module *module,
- const char *mod_name)
-{
- if (!pre_init)
- return __pci_register_driver(driver, module, mod_name);
- driver->driver.owner = module;
- list_add_tail(&driver->node, &ide_pci_drivers);
- return 0;
-}
-EXPORT_SYMBOL_GPL(__ide_pci_register_driver);
-
-/**
- * ide_scan_pcidev - find an IDE driver for a device
- * @dev: PCI device to check
- *
- * Look for an IDE driver to handle the device we are considering.
- * This is only used during boot up to get the ordering correct. After
- * boot up the pci layer takes over the job.
- */
-
-static int __init ide_scan_pcidev(struct pci_dev *dev)
-{
- struct list_head *l;
- struct pci_driver *d;
-
- list_for_each(l, &ide_pci_drivers) {
- d = list_entry(l, struct pci_driver, node);
- if (d->id_table) {
- const struct pci_device_id *id =
- pci_match_id(d->id_table, dev);
-
- if (id != NULL && d->probe(dev, id) >= 0) {
- dev->driver = d;
- pci_dev_get(dev);
- return 1;
- }
- }
- }
- return 0;
-}
-
-/**
- * ide_scan_pcibus - perform the initial IDE driver scan
- * @scan_direction: set for reverse order scanning
- *
- * Perform the initial bus rather than driver ordered scan of the
- * PCI drivers. After this all IDE pci handling becomes standard
- * module ordering not traditionally ordered.
- */
-
-void __init ide_scan_pcibus (int scan_direction)
-{
- struct pci_dev *dev = NULL;
- struct pci_driver *d;
- struct list_head *l, *n;
-
- pre_init = 0;
- if (!scan_direction)
- while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)))
- ide_scan_pcidev(dev);
- else
- while ((dev = pci_get_device_reverse(PCI_ANY_ID, PCI_ANY_ID,
- dev)))
- ide_scan_pcidev(dev);
-
- /*
- * Hand the drivers over to the PCI layer now we
- * are post init.
- */
-
- list_for_each_safe(l, n, &ide_pci_drivers) {
- list_del(l);
- d = list_entry(l, struct pci_driver, node);
- if (__pci_register_driver(d, d->driver.owner,
- d->driver.mod_name))
- printk(KERN_ERR "%s: failed to register %s driver\n",
- __FUNCTION__, d->driver.mod_name);
- }
-}
-#endif
diff --git a/drivers/macintosh/mediabay.c b/drivers/macintosh/mediabay.c
index 48d647abea4..eaba4a9b231 100644
--- a/drivers/macintosh/mediabay.c
+++ b/drivers/macintosh/mediabay.c
@@ -563,7 +563,8 @@ static void media_bay_step(int i)
ide_init_hwif_ports(&hw, (unsigned long) bay->cd_base, (unsigned long) 0, NULL);
hw.irq = bay->cd_irq;
hw.chipset = ide_pmac;
- bay->cd_index = ide_register_hw(&hw, NULL, 0, NULL);
+ bay->cd_index =
+ ide_register_hw(&hw, NULL, NULL);
pmu_resume();
}
if (bay->cd_index == -1) {
diff --git a/drivers/macintosh/therm_windtunnel.c b/drivers/macintosh/therm_windtunnel.c
index 5452da1bb1a..b66da74caa5 100644
--- a/drivers/macintosh/therm_windtunnel.c
+++ b/drivers/macintosh/therm_windtunnel.c
@@ -47,12 +47,10 @@
#define LOG_TEMP 0 /* continously log temperature */
-#define I2C_DRIVERID_G4FAN 0x9001 /* fixme */
-
static int do_probe( struct i2c_adapter *adapter, int addr, int kind);
/* scan 0x48-0x4f (DS1775) and 0x2c-2x2f (ADM1030) */
-static unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b,
+static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b,
0x4c, 0x4d, 0x4e, 0x4f,
0x2c, 0x2d, 0x2e, 0x2f,
I2C_CLIENT_END };
@@ -357,7 +355,6 @@ static struct i2c_driver g4fan_driver = {
.driver = {
.name = "therm_windtunnel",
},
- .id = I2C_DRIVERID_G4FAN,
.attach_adapter = do_attach,
.detach_client = do_detach,
};
diff --git a/drivers/media/video/dpc7146.c b/drivers/media/video/dpc7146.c
index 255dae30370..566e479e262 100644
--- a/drivers/media/video/dpc7146.c
+++ b/drivers/media/video/dpc7146.c
@@ -87,11 +87,24 @@ struct dpc
int cur_input; /* current input */
};
+static int dpc_check_clients(struct device *dev, void *data)
+{
+ struct dpc* dpc = data;
+ struct i2c_client *client = i2c_verify_client(dev);
+
+ if( !client )
+ return 0;
+
+ if( I2C_SAA7111A == client->addr )
+ dpc->saa7111a = client;
+
+ return 0;
+}
+
/* fixme: add vbi stuff here */
static int dpc_probe(struct saa7146_dev* dev)
{
struct dpc* dpc = NULL;
- struct i2c_client *client;
dpc = kzalloc(sizeof(struct dpc), GFP_KERNEL);
if( NULL == dpc ) {
@@ -115,9 +128,7 @@ static int dpc_probe(struct saa7146_dev* dev)
}
/* loop through all i2c-devices on the bus and look who is there */
- list_for_each_entry(client, &dpc->i2c_adapter.clients, list)
- if( I2C_SAA7111A == client->addr )
- dpc->saa7111a = client;
+ device_for_each_child(&dpc->i2c_adapter.dev, dpc, dpc_check_clients);
/* check if all devices are present */
if( 0 == dpc->saa7111a ) {
diff --git a/drivers/media/video/ks0127.c b/drivers/media/video/ks0127.c
index b6cd21e6dab..4895540be19 100644
--- a/drivers/media/video/ks0127.c
+++ b/drivers/media/video/ks0127.c
@@ -764,7 +764,6 @@ static struct i2c_client ks0127_client_tmpl =
.addr = 0,
.adapter = NULL,
.driver = &i2c_driver_ks0127,
- .usage_count = 0
};
static int ks0127_found_proc(struct i2c_adapter *adapter, int addr, int kind)
diff --git a/drivers/media/video/mxb.c b/drivers/media/video/mxb.c
index 98ad3092a07..add6d0d680b 100644
--- a/drivers/media/video/mxb.c
+++ b/drivers/media/video/mxb.c
@@ -149,10 +149,33 @@ struct mxb
static struct saa7146_extension extension;
+static int mxb_check_clients(struct device *dev, void *data)
+{
+ struct mxb* mxb = data;
+ struct i2c_client *client = i2c_verify_client(dev);
+
+ if( !client )
+ return 0;
+
+ if( I2C_ADDR_TEA6420_1 == client->addr )
+ mxb->tea6420_1 = client;
+ if( I2C_ADDR_TEA6420_2 == client->addr )
+ mxb->tea6420_2 = client;
+ if( I2C_TEA6415C_2 == client->addr )
+ mxb->tea6415c = client;
+ if( I2C_ADDR_TDA9840 == client->addr )
+ mxb->tda9840 = client;
+ if( I2C_SAA7111 == client->addr )
+ mxb->saa7111a = client;
+ if( 0x60 == client->addr )
+ mxb->tuner = client;
+
+ return 0;
+}
+
static int mxb_probe(struct saa7146_dev* dev)
{
struct mxb* mxb = NULL;
- struct i2c_client *client;
int result;
if ((result = request_module("saa7111")) < 0) {
@@ -195,20 +218,7 @@ static int mxb_probe(struct saa7146_dev* dev)
}
/* loop through all i2c-devices on the bus and look who is there */
- list_for_each_entry(client, &mxb->i2c_adapter.clients, list) {
- if( I2C_ADDR_TEA6420_1 == client->addr )
- mxb->tea6420_1 = client;
- if( I2C_ADDR_TEA6420_2 == client->addr )
- mxb->tea6420_2 = client;
- if( I2C_TEA6415C_2 == client->addr )
- mxb->tea6415c = client;
- if( I2C_ADDR_TDA9840 == client->addr )
- mxb->tda9840 = client;
- if( I2C_SAA7111 == client->addr )
- mxb->saa7111a = client;
- if( 0x60 == client->addr )
- mxb->tuner = client;
- }
+ device_for_each_child(&mxb->i2c_adapter.dev, mxb, mxb_check_clients);
/* check if all devices are present */
if( 0 == mxb->tea6420_1 || 0 == mxb->tea6420_2 || 0 == mxb->tea6415c
diff --git a/drivers/media/video/vino.c b/drivers/media/video/vino.c
index 9a03dc82c6c..5bb75294b5a 100644
--- a/drivers/media/video/vino.c
+++ b/drivers/media/video/vino.c
@@ -2589,11 +2589,7 @@ static int vino_acquire_input(struct vino_channel_settings *vcs)
/* First try D1 and then SAA7191 */
if (vino_drvdata->camera.driver
&& (vino_drvdata->camera.owner == VINO_NO_CHANNEL)) {
- if (i2c_use_client(vino_drvdata->camera.driver)) {
- ret = -ENODEV;
- goto out;
- }
-
+ i2c_use_client(vino_drvdata->camera.driver);
vino_drvdata->camera.owner = vcs->channel;
vcs->input = VINO_INPUT_D1;
vcs->data_norm = VINO_DATA_NORM_D1;
@@ -2602,11 +2598,7 @@ static int vino_acquire_input(struct vino_channel_settings *vcs)
int input, data_norm;
int saa7191_input;
- if (i2c_use_client(vino_drvdata->decoder.driver)) {
- ret = -ENODEV;
- goto out;
- }
-
+ i2c_use_client(vino_drvdata->decoder.driver);
input = VINO_INPUT_COMPOSITE;
saa7191_input = vino_get_saa7191_input(input);
@@ -2688,10 +2680,7 @@ static int vino_set_input(struct vino_channel_settings *vcs, int input)
}
if (vino_drvdata->decoder.owner == VINO_NO_CHANNEL) {
- if (i2c_use_client(vino_drvdata->decoder.driver)) {
- ret = -ENODEV;
- goto out;
- }
+ i2c_use_client(vino_drvdata->decoder.driver);
vino_drvdata->decoder.owner = vcs->channel;
}
@@ -2759,10 +2748,7 @@ static int vino_set_input(struct vino_channel_settings *vcs, int input)
}
if (vino_drvdata->camera.owner == VINO_NO_CHANNEL) {
- if (i2c_use_client(vino_drvdata->camera.driver)) {
- ret = -ENODEV;
- goto out;
- }
+ i2c_use_client(vino_drvdata->camera.driver);
vino_drvdata->camera.owner = vcs->channel;
}
diff --git a/drivers/mfd/ucb1x00-assabet.c b/drivers/mfd/ucb1x00-assabet.c
index b7c8e781386..61aeaf79640 100644
--- a/drivers/mfd/ucb1x00-assabet.c
+++ b/drivers/mfd/ucb1x00-assabet.c
@@ -20,7 +20,7 @@
#include "ucb1x00.h"
#define UCB1X00_ATTR(name,input)\
-static ssize_t name##_show(struct device *dev, struct device_attribute *attr,
+static ssize_t name##_show(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct ucb1x00 *ucb = classdev_to_ucb1x00(dev); \
@@ -38,17 +38,17 @@ UCB1X00_ATTR(batt_temp, UCB_ADC_INP_AD2);
static int ucb1x00_assabet_add(struct ucb1x00_dev *dev)
{
- device_create_file(&dev->ucb->dev, &device_attr_vbatt);
- device_create_file(&dev->ucb->dev, &device_attr_vcharger);
- device_create_file(&dev->ucb->dev, &device_attr_batt_temp);
+ device_create_file(&dev->ucb->dev, &dev_attr_vbatt);
+ device_create_file(&dev->ucb->dev, &dev_attr_vcharger);
+ device_create_file(&dev->ucb->dev, &dev_attr_batt_temp);
return 0;
}
static void ucb1x00_assabet_remove(struct ucb1x00_dev *dev)
{
- device_remove_file(&dev->ucb->cdev, &device_attr_batt_temp);
- device_remove_file(&dev->ucb->cdev, &device_attr_vcharger);
- device_remove_file(&dev->ucb->cdev, &device_attr_vbatt);
+ device_remove_file(&dev->ucb->dev, &dev_attr_batt_temp);
+ device_remove_file(&dev->ucb->dev, &dev_attr_vcharger);
+ device_remove_file(&dev->ucb->dev, &dev_attr_vbatt);
}
static struct ucb1x00_driver ucb1x00_assabet_driver = {
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 971e18b91f4..c9dfeb15b48 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -25,6 +25,7 @@
#include <linux/mmc/card.h>
#include <linux/clk.h>
#include <linux/scatterlist.h>
+#include <linux/i2c/tps65010.h>
#include <asm/io.h>
#include <asm/irq.h>
@@ -35,7 +36,6 @@
#include <asm/arch/dma.h>
#include <asm/arch/mux.h>
#include <asm/arch/fpga.h>
-#include <asm/arch/tps65010.h>
#define OMAP_MMC_REG_CMD 0x00
#define OMAP_MMC_REG_ARGL 0x04
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 9af05a2f4af..a6728661c41 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -212,7 +212,7 @@ config MII
config MACB
tristate "Atmel MACB support"
- depends on AVR32 || ARCH_AT91SAM9260 || ARCH_AT91SAM9263
+ depends on AVR32 || ARCH_AT91SAM9260 || ARCH_AT91SAM9263 || ARCH_AT91CAP9
select PHYLIB
help
The Atmel MACB ethernet interface is found on many AT32 and AT91
diff --git a/drivers/rtc/rtc-ds1672.c b/drivers/rtc/rtc-ds1672.c
index dfef1637bfb..e0900ca678e 100644
--- a/drivers/rtc/rtc-ds1672.c
+++ b/drivers/rtc/rtc-ds1672.c
@@ -16,7 +16,7 @@
#define DRV_VERSION "0.3"
/* Addresses to scan: none. This chip cannot be detected. */
-static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { I2C_CLIENT_END };
/* Insmod parameters */
I2C_CLIENT_INSMOD;
diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c
index 1c743641b73..725b0c73c33 100644
--- a/drivers/rtc/rtc-isl1208.c
+++ b/drivers/rtc/rtc-isl1208.c
@@ -61,7 +61,7 @@
/* i2c configuration */
#define ISL1208_I2C_ADDR 0xde
-static unsigned short normal_i2c[] = {
+static const unsigned short normal_i2c[] = {
ISL1208_I2C_ADDR>>1, I2C_CLIENT_END
};
I2C_CLIENT_INSMOD; /* defines addr_data */
diff --git a/drivers/rtc/rtc-max6900.c b/drivers/rtc/rtc-max6900.c
index a1cd448639c..7683412970c 100644
--- a/drivers/rtc/rtc-max6900.c
+++ b/drivers/rtc/rtc-max6900.c
@@ -54,7 +54,7 @@
#define MAX6900_I2C_ADDR 0xa0
-static unsigned short normal_i2c[] = {
+static const unsigned short normal_i2c[] = {
MAX6900_I2C_ADDR >> 1,
I2C_CLIENT_END
};
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index 0242d803ebe..b3317fcc16c 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -25,7 +25,7 @@
* located at 0x51 will pass the validation routine due to
* the way the registers are implemented.
*/
-static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { I2C_CLIENT_END };
/* Module parameters */
I2C_CLIENT_INSMOD;
diff --git a/drivers/rtc/rtc-pcf8583.c b/drivers/rtc/rtc-pcf8583.c
index 556d0e7da35..c973ba94c42 100644
--- a/drivers/rtc/rtc-pcf8583.c
+++ b/drivers/rtc/rtc-pcf8583.c
@@ -40,7 +40,7 @@ struct pcf8583 {
#define CTRL_ALARM 0x02
#define CTRL_TIMER 0x01
-static unsigned short normal_i2c[] = { 0x50, I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { 0x50, I2C_CLIENT_END };
/* Module parameters */
I2C_CLIENT_INSMOD;
diff --git a/drivers/rtc/rtc-x1205.c b/drivers/rtc/rtc-x1205.c
index b3fae357ca4..b90fb1866ce 100644
--- a/drivers/rtc/rtc-x1205.c
+++ b/drivers/rtc/rtc-x1205.c
@@ -32,7 +32,7 @@
* unknown chips, the user must explicitly set the probe parameter.
*/
-static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { I2C_CLIENT_END };
/* Insmod parameters */
I2C_CLIENT_INSMOD;
diff --git a/drivers/s390/block/Makefile b/drivers/s390/block/Makefile
index be9f22d52fd..0a89e080b38 100644
--- a/drivers/s390/block/Makefile
+++ b/drivers/s390/block/Makefile
@@ -2,8 +2,8 @@
# S/390 block devices
#
-dasd_eckd_mod-objs := dasd_eckd.o dasd_3990_erp.o dasd_9343_erp.o
-dasd_fba_mod-objs := dasd_fba.o dasd_3370_erp.o dasd_9336_erp.o
+dasd_eckd_mod-objs := dasd_eckd.o dasd_3990_erp.o dasd_alias.o
+dasd_fba_mod-objs := dasd_fba.o
dasd_diag_mod-objs := dasd_diag.o
dasd_mod-objs := dasd.o dasd_ioctl.o dasd_proc.o dasd_devmap.o \
dasd_genhd.o dasd_erp.o
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index e6bfce690ca..1db15f3e5d2 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -48,13 +48,15 @@ MODULE_LICENSE("GPL");
/*
* SECTION: prototypes for static functions of dasd.c
*/
-static int dasd_alloc_queue(struct dasd_device * device);
-static void dasd_setup_queue(struct dasd_device * device);
-static void dasd_free_queue(struct dasd_device * device);
-static void dasd_flush_request_queue(struct dasd_device *);
-static int dasd_flush_ccw_queue(struct dasd_device *, int);
-static void dasd_tasklet(struct dasd_device *);
+static int dasd_alloc_queue(struct dasd_block *);
+static void dasd_setup_queue(struct dasd_block *);
+static void dasd_free_queue(struct dasd_block *);
+static void dasd_flush_request_queue(struct dasd_block *);
+static int dasd_flush_block_queue(struct dasd_block *);
+static void dasd_device_tasklet(struct dasd_device *);
+static void dasd_block_tasklet(struct dasd_block *);
static void do_kick_device(struct work_struct *);
+static void dasd_return_cqr_cb(struct dasd_ccw_req *, void *);
/*
* SECTION: Operations on the device structure.
@@ -65,26 +67,23 @@ static wait_queue_head_t dasd_flush_wq;
/*
* Allocate memory for a new device structure.
*/
-struct dasd_device *
-dasd_alloc_device(void)
+struct dasd_device *dasd_alloc_device(void)
{
struct dasd_device *device;
- device = kzalloc(sizeof (struct dasd_device), GFP_ATOMIC);
- if (device == NULL)
+ device = kzalloc(sizeof(struct dasd_device), GFP_ATOMIC);
+ if (!device)
return ERR_PTR(-ENOMEM);
- /* open_count = 0 means device online but not in use */
- atomic_set(&device->open_count, -1);
/* Get two pages for normal block device operations. */
device->ccw_mem = (void *) __get_free_pages(GFP_ATOMIC | GFP_DMA, 1);
- if (device->ccw_mem == NULL) {
+ if (!device->ccw_mem) {
kfree(device);
return ERR_PTR(-ENOMEM);
}
/* Get one page for error recovery. */
device->erp_mem = (void *) get_zeroed_page(GFP_ATOMIC | GFP_DMA);
- if (device->erp_mem == NULL) {
+ if (!device->erp_mem) {
free_pages((unsigned long) device->ccw_mem, 1);
kfree(device);
return ERR_PTR(-ENOMEM);
@@ -93,10 +92,9 @@ dasd_alloc_device(void)
dasd_init_chunklist(&device->ccw_chunks, device->ccw_mem, PAGE_SIZE*2);
dasd_init_chunklist(&device->erp_chunks, device->erp_mem, PAGE_SIZE);
spin_lock_init(&device->mem_lock);
- spin_lock_init(&device->request_queue_lock);
- atomic_set (&device->tasklet_scheduled, 0);
+ atomic_set(&device->tasklet_scheduled, 0);
tasklet_init(&device->tasklet,
- (void (*)(unsigned long)) dasd_tasklet,
+ (void (*)(unsigned long)) dasd_device_tasklet,
(unsigned long) device);
INIT_LIST_HEAD(&device->ccw_queue);
init_timer(&device->timer);
@@ -110,8 +108,7 @@ dasd_alloc_device(void)
/*
* Free memory of a device structure.
*/
-void
-dasd_free_device(struct dasd_device *device)
+void dasd_free_device(struct dasd_device *device)
{
kfree(device->private);
free_page((unsigned long) device->erp_mem);
@@ -120,10 +117,42 @@ dasd_free_device(struct dasd_device *device)
}
/*
+ * Allocate memory for a new device structure.
+ */
+struct dasd_block *dasd_alloc_block(void)
+{
+ struct dasd_block *block;
+
+ block = kzalloc(sizeof(*block), GFP_ATOMIC);
+ if (!block)
+ return ERR_PTR(-ENOMEM);
+ /* open_count = 0 means device online but not in use */
+ atomic_set(&block->open_count, -1);
+
+ spin_lock_init(&block->request_queue_lock);
+ atomic_set(&block->tasklet_scheduled, 0);
+ tasklet_init(&block->tasklet,
+ (void (*)(unsigned long)) dasd_block_tasklet,
+ (unsigned long) block);
+ INIT_LIST_HEAD(&block->ccw_queue);
+ spin_lock_init(&block->queue_lock);
+ init_timer(&block->timer);
+
+ return block;
+}
+
+/*
+ * Free memory of a device structure.
+ */
+void dasd_free_block(struct dasd_block *block)
+{
+ kfree(block);
+}
+
+/*
* Make a new device known to the system.
*/
-static int
-dasd_state_new_to_known(struct dasd_device *device)
+static int dasd_state_new_to_known(struct dasd_device *device)
{
int rc;
@@ -133,12 +162,13 @@ dasd_state_new_to_known(struct dasd_device *device)
*/
dasd_get_device(device);
- rc = dasd_alloc_queue(device);
- if (rc) {
- dasd_put_device(device);
- return rc;
+ if (device->block) {
+ rc = dasd_alloc_queue(device->block);
+ if (rc) {
+ dasd_put_device(device);
+ return rc;
+ }
}
-
device->state = DASD_STATE_KNOWN;
return 0;
}
@@ -146,21 +176,24 @@ dasd_state_new_to_known(struct dasd_device *device)
/*
* Let the system forget about a device.
*/
-static int
-dasd_state_known_to_new(struct dasd_device * device)
+static int dasd_state_known_to_new(struct dasd_device *device)
{
/* Disable extended error reporting for this device. */
dasd_eer_disable(device);
/* Forget the discipline information. */
- if (device->discipline)
+ if (device->discipline) {
+ if (device->discipline->uncheck_device)
+ device->discipline->uncheck_device(device);
module_put(device->discipline->owner);
+ }
device->discipline = NULL;
if (device->base_discipline)
module_put(device->base_discipline->owner);
device->base_discipline = NULL;
device->state = DASD_STATE_NEW;
- dasd_free_queue(device);
+ if (device->block)
+ dasd_free_queue(device->block);
/* Give up reference we took in dasd_state_new_to_known. */
dasd_put_device(device);
@@ -170,19 +203,19 @@ dasd_state_known_to_new(struct dasd_device * device)
/*
* Request the irq line for the device.
*/
-static int
-dasd_state_known_to_basic(struct dasd_device * device)
+static int dasd_state_known_to_basic(struct dasd_device *device)
{
int rc;
/* Allocate and register gendisk structure. */
- rc = dasd_gendisk_alloc(device);
- if (rc)
- return rc;
-
+ if (device->block) {
+ rc = dasd_gendisk_alloc(device->block);
+ if (rc)
+ return rc;
+ }
/* register 'device' debug area, used for all DBF_DEV_XXX calls */
- device->debug_area = debug_register(device->cdev->dev.bus_id, 1, 2,
- 8 * sizeof (long));
+ device->debug_area = debug_register(device->cdev->dev.bus_id, 1, 1,
+ 8 * sizeof(long));
debug_register_view(device->debug_area, &debug_sprintf_view);
debug_set_level(device->debug_area, DBF_WARNING);
DBF_DEV_EVENT(DBF_EMERG, device, "%s", "debug area created");
@@ -194,16 +227,17 @@ dasd_state_known_to_basic(struct dasd_device * device)
/*
* Release the irq line for the device. Terminate any running i/o.
*/
-static int
-dasd_state_basic_to_known(struct dasd_device * device)
+static int dasd_state_basic_to_known(struct dasd_device *device)
{
int rc;
-
- dasd_gendisk_free(device);
- rc = dasd_flush_ccw_queue(device, 1);
+ if (device->block) {
+ dasd_gendisk_free(device->block);
+ dasd_block_clear_timer(device->block);
+ }
+ rc = dasd_flush_device_queue(device);
if (rc)
return rc;
- dasd_clear_timer(device);
+ dasd_device_clear_timer(device);
DBF_DEV_EVENT(DBF_EMERG, device, "%p debug area deleted", device);
if (device->debug_area != NULL) {
@@ -228,26 +262,32 @@ dasd_state_basic_to_known(struct dasd_device * device)
* In case the analysis returns an error, the device setup is stopped
* (a fake disk was already added to allow formatting).
*/
-static int
-dasd_state_basic_to_ready(struct dasd_device * device)
+static int dasd_state_basic_to_ready(struct dasd_device *device)
{
int rc;
+ struct dasd_block *block;
rc = 0;
- if (device->discipline->do_analysis != NULL)
- rc = device->discipline->do_analysis(device);
- if (rc) {
- if (rc != -EAGAIN)
- device->state = DASD_STATE_UNFMT;
- return rc;
- }
+ block = device->block;
/* make disk known with correct capacity */
- dasd_setup_queue(device);
- set_capacity(device->gdp, device->blocks << device->s2b_shift);
- device->state = DASD_STATE_READY;
- rc = dasd_scan_partitions(device);
- if (rc)
- device->state = DASD_STATE_BASIC;
+ if (block) {
+ if (block->base->discipline->do_analysis != NULL)
+ rc = block->base->discipline->do_analysis(block);
+ if (rc) {
+ if (rc != -EAGAIN)
+ device->state = DASD_STATE_UNFMT;
+ return rc;
+ }
+ dasd_setup_queue(block);
+ set_capacity(block->gdp,
+ block->blocks << block->s2b_shift);
+ device->state = DASD_STATE_READY;
+ rc = dasd_scan_partitions(block);
+ if (rc)
+ device->state = DASD_STATE_BASIC;
+ } else {
+ device->state = DASD_STATE_READY;
+ }
return rc;
}
@@ -256,28 +296,31 @@ dasd_state_basic_to_ready(struct dasd_device * device)
* Forget format information. Check if the target level is basic
* and if it is create fake disk for formatting.
*/
-static int
-dasd_state_ready_to_basic(struct dasd_device * device)
+static int dasd_state_ready_to_basic(struct dasd_device *device)
{
int rc;
- rc = dasd_flush_ccw_queue(device, 0);
- if (rc)
- return rc;
- dasd_destroy_partitions(device);
- dasd_flush_request_queue(device);
- device->blocks = 0;
- device->bp_block = 0;
- device->s2b_shift = 0;
device->state = DASD_STATE_BASIC;
+ if (device->block) {
+ struct dasd_block *block = device->block;
+ rc = dasd_flush_block_queue(block);
+ if (rc) {
+ device->state = DASD_STATE_READY;
+ return rc;
+ }
+ dasd_destroy_partitions(block);
+ dasd_flush_request_queue(block);
+ block->blocks = 0;
+ block->bp_block = 0;
+ block->s2b_shift = 0;
+ }
return 0;
}
/*
* Back to basic.
*/
-static int
-dasd_state_unfmt_to_basic(struct dasd_device * device)
+static int dasd_state_unfmt_to_basic(struct dasd_device *device)
{
device->state = DASD_STATE_BASIC;
return 0;
@@ -291,17 +334,31 @@ dasd_state_unfmt_to_basic(struct dasd_device * device)
static int
dasd_state_ready_to_online(struct dasd_device * device)
{
+ int rc;
+
+ if (device->discipline->ready_to_online) {
+ rc = device->discipline->ready_to_online(device);
+ if (rc)
+ return rc;
+ }
device->state = DASD_STATE_ONLINE;
- dasd_schedule_bh(device);
+ if (device->block)
+ dasd_schedule_block_bh(device->block);
return 0;
}
/*
* Stop the requeueing of requests again.
*/
-static int
-dasd_state_online_to_ready(struct dasd_device * device)
+static int dasd_state_online_to_ready(struct dasd_device *device)
{
+ int rc;
+
+ if (device->discipline->online_to_ready) {
+ rc = device->discipline->online_to_ready(device);
+ if (rc)
+ return rc;
+ }
device->state = DASD_STATE_READY;
return 0;
}
@@ -309,8 +366,7 @@ dasd_state_online_to_ready(struct dasd_device * device)
/*
* Device startup state changes.
*/
-static int
-dasd_increase_state(struct dasd_device *device)
+static int dasd_increase_state(struct dasd_device *device)
{
int rc;
@@ -345,8 +401,7 @@ dasd_increase_state(struct dasd_device *device)
/*
* Device shutdown state changes.
*/
-static int
-dasd_decrease_state(struct dasd_device *device)
+static int dasd_decrease_state(struct dasd_device *device)
{
int rc;
@@ -381,8 +436,7 @@ dasd_decrease_state(struct dasd_device *device)
/*
* This is the main startup/shutdown routine.
*/
-static void
-dasd_change_state(struct dasd_device *device)
+static void dasd_change_state(struct dasd_device *device)
{
int rc;
@@ -409,17 +463,15 @@ dasd_change_state(struct dasd_device *device)
* dasd_kick_device will schedule a call do do_kick_device to the kernel
* event daemon.
*/
-static void
-do_kick_device(struct work_struct *work)
+static void do_kick_device(struct work_struct *work)
{
struct dasd_device *device = container_of(work, struct dasd_device, kick_work);
dasd_change_state(device);
- dasd_schedule_bh(device);
+ dasd_schedule_device_bh(device);
dasd_put_device(device);
}
-void
-dasd_kick_device(struct dasd_device *device)
+void dasd_kick_device(struct dasd_device *device)
{
dasd_get_device(device);
/* queue call to dasd_kick_device to the kernel event daemon. */
@@ -429,8 +481,7 @@ dasd_kick_device(struct dasd_device *device)
/*
* Set the target state for a device and starts the state change.
*/
-void
-dasd_set_target_state(struct dasd_device *device, int target)
+void dasd_set_target_state(struct dasd_device *device, int target)
{
/* If we are in probeonly mode stop at DASD_STATE_READY. */
if (dasd_probeonly && target > DASD_STATE_READY)
@@ -447,14 +498,12 @@ dasd_set_target_state(struct dasd_device *device, int target)
/*
* Enable devices with device numbers in [from..to].
*/
-static inline int
-_wait_for_device(struct dasd_device *device)
+static inline int _wait_for_device(struct dasd_device *device)
{
return (device->state == device->target);
}
-void
-dasd_enable_device(struct dasd_device *device)
+void dasd_enable_device(struct dasd_device *device)
{
dasd_set_target_state(device, DASD_STATE_ONLINE);
if (device->state <= DASD_STATE_KNOWN)
@@ -475,20 +524,20 @@ unsigned int dasd_profile_level = DASD_PROFILE_OFF;
/*
* Increments counter in global and local profiling structures.
*/
-#define dasd_profile_counter(value, counter, device) \
+#define dasd_profile_counter(value, counter, block) \
{ \
int index; \
for (index = 0; index < 31 && value >> (2+index); index++); \
dasd_global_profile.counter[index]++; \
- device->profile.counter[index]++; \
+ block->profile.counter[index]++; \
}
/*
* Add profiling information for cqr before execution.
*/
-static void
-dasd_profile_start(struct dasd_device *device, struct dasd_ccw_req * cqr,
- struct request *req)
+static void dasd_profile_start(struct dasd_block *block,
+ struct dasd_ccw_req *cqr,
+ struct request *req)
{
struct list_head *l;
unsigned int counter;
@@ -498,19 +547,19 @@ dasd_profile_start(struct dasd_device *device, struct dasd_ccw_req * cqr,
/* count the length of the chanq for statistics */
counter = 0;
- list_for_each(l, &device->ccw_queue)
+ list_for_each(l, &block->ccw_queue)
if (++counter >= 31)
break;
dasd_global_profile.dasd_io_nr_req[counter]++;
- device->profile.dasd_io_nr_req[counter]++;
+ block->profile.dasd_io_nr_req[counter]++;
}
/*
* Add profiling information for cqr after execution.
*/
-static void
-dasd_profile_end(struct dasd_device *device, struct dasd_ccw_req * cqr,
- struct request *req)
+static void dasd_profile_end(struct dasd_block *block,
+ struct dasd_ccw_req *cqr,
+ struct request *req)
{
long strtime, irqtime, endtime, tottime; /* in microseconds */
long tottimeps, sectors;
@@ -532,27 +581,27 @@ dasd_profile_end(struct dasd_device *device, struct dasd_ccw_req * cqr,
if (!dasd_global_profile.dasd_io_reqs)
memset(&dasd_global_profile, 0,
- sizeof (struct dasd_profile_info_t));
+ sizeof(struct dasd_profile_info_t));
dasd_global_profile.dasd_io_reqs++;
dasd_global_profile.dasd_io_sects += sectors;
- if (!device->profile.dasd_io_reqs)
- memset(&device->profile, 0,
- sizeof (struct dasd_profile_info_t));
- device->profile.dasd_io_reqs++;
- device->profile.dasd_io_sects += sectors;
+ if (!block->profile.dasd_io_reqs)
+ memset(&block->profile, 0,
+ sizeof(struct dasd_profile_info_t));
+ block->profile.dasd_io_reqs++;
+ block->profile.dasd_io_sects += sectors;
- dasd_profile_counter(sectors, dasd_io_secs, device);
- dasd_profile_counter(tottime, dasd_io_times, device);
- dasd_profile_counter(tottimeps, dasd_io_timps, device);
- dasd_profile_counter(strtime, dasd_io_time1, device);
- dasd_profile_counter(irqtime, dasd_io_time2, device);
- dasd_profile_counter(irqtime / sectors, dasd_io_time2ps, device);
- dasd_profile_counter(endtime, dasd_io_time3, device);
+ dasd_profile_counter(sectors, dasd_io_secs, block);
+ dasd_profile_counter(tottime, dasd_io_times, block);
+ dasd_profile_counter(tottimeps, dasd_io_timps, block);
+ dasd_profile_counter(strtime, dasd_io_time1, block);
+ dasd_profile_counter(irqtime, dasd_io_time2, block);
+ dasd_profile_counter(irqtime / sectors, dasd_io_time2ps, block);
+ dasd_profile_counter(endtime, dasd_io_time3, block);
}
#else
-#define dasd_profile_start(device, cqr, req) do {} while (0)
-#define dasd_profile_end(device, cqr, req) do {} while (0)
+#define dasd_profile_start(block, cqr, req) do {} while (0)
+#define dasd_profile_end(block, cqr, req) do {} while (0)
#endif /* CONFIG_DASD_PROFILE */
/*
@@ -562,9 +611,9 @@ dasd_profile_end(struct dasd_device *device, struct dasd_ccw_req * cqr,
* memory and 2) dasd_smalloc_request uses the static ccw memory
* that gets allocated for each device.
*/
-struct dasd_ccw_req *
-dasd_kmalloc_request(char *magic, int cplength, int datasize,
- struct dasd_device * device)
+struct dasd_ccw_req *dasd_kmalloc_request(char *magic, int cplength,
+ int datasize,
+ struct dasd_device *device)
{
struct dasd_ccw_req *cqr;
@@ -600,9 +649,9 @@ dasd_kmalloc_request(char *magic, int cplength, int datasize,
return cqr;
}
-struct dasd_ccw_req *
-dasd_smalloc_request(char *magic, int cplength, int datasize,
- struct dasd_device * device)
+struct dasd_ccw_req *dasd_smalloc_request(char *magic, int cplength,
+ int datasize,
+ struct dasd_device *device)
{
unsigned long flags;
struct dasd_ccw_req *cqr;
@@ -649,8 +698,7 @@ dasd_smalloc_request(char *magic, int cplength, int datasize,
* idal lists that might have been created by dasd_set_cda and the
* struct dasd_ccw_req itself.
*/
-void
-dasd_kfree_request(struct dasd_ccw_req * cqr, struct dasd_device * device)
+void dasd_kfree_request(struct dasd_ccw_req *cqr, struct dasd_device *device)
{
#ifdef CONFIG_64BIT
struct ccw1 *ccw;
@@ -667,8 +715,7 @@ dasd_kfree_request(struct dasd_ccw_req * cqr, struct dasd_device * device)
dasd_put_device(device);
}
-void
-dasd_sfree_request(struct dasd_ccw_req * cqr, struct dasd_device * device)
+void dasd_sfree_request(struct dasd_ccw_req *cqr, struct dasd_device *device)
{
unsigned long flags;
@@ -681,14 +728,13 @@ dasd_sfree_request(struct dasd_ccw_req * cqr, struct dasd_device * device)
/*
* Check discipline magic in cqr.
*/
-static inline int
-dasd_check_cqr(struct dasd_ccw_req *cqr)
+static inline int dasd_check_cqr(struct dasd_ccw_req *cqr)
{
struct dasd_device *device;
if (cqr == NULL)
return -EINVAL;
- device = cqr->device;
+ device = cqr->startdev;
if (strncmp((char *) &cqr->magic, device->discipline->ebcname, 4)) {
DEV_MESSAGE(KERN_WARNING, device,
" dasd_ccw_req 0x%08x magic doesn't match"
@@ -706,8 +752,7 @@ dasd_check_cqr(struct dasd_ccw_req *cqr)
* ccw_device_clear can fail if the i/o subsystem
* is in a bad mood.
*/
-int
-dasd_term_IO(struct dasd_ccw_req * cqr)
+int dasd_term_IO(struct dasd_ccw_req *cqr)
{
struct dasd_device *device;
int retries, rc;
@@ -717,13 +762,13 @@ dasd_term_IO(struct dasd_ccw_req * cqr)
if (rc)
return rc;
retries = 0;
- device = (struct dasd_device *) cqr->device;
+ device = (struct dasd_device *) cqr->startdev;
while ((retries < 5) && (cqr->status == DASD_CQR_IN_IO)) {
rc = ccw_device_clear(device->cdev, (long) cqr);
switch (rc) {
case 0: /* termination successful */
cqr->retries--;
- cqr->status = DASD_CQR_CLEAR;
+ cqr->status = DASD_CQR_CLEAR_PENDING;
cqr->stopclk = get_clock();
cqr->starttime = 0;
DBF_DEV_EVENT(DBF_DEBUG, device,
@@ -753,7 +798,7 @@ dasd_term_IO(struct dasd_ccw_req * cqr)
}
retries++;
}
- dasd_schedule_bh(device);
+ dasd_schedule_device_bh(device);
return rc;
}
@@ -761,8 +806,7 @@ dasd_term_IO(struct dasd_ccw_req * cqr)
* Start the i/o. This start_IO can fail if the channel is really busy.
* In that case set up a timer to start the request later.
*/
-int
-dasd_start_IO(struct dasd_ccw_req * cqr)
+int dasd_start_IO(struct dasd_ccw_req *cqr)
{
struct dasd_device *device;
int rc;
@@ -771,12 +815,12 @@ dasd_start_IO(struct dasd_ccw_req * cqr)
rc = dasd_check_cqr(cqr);
if (rc)
return rc;
- device = (struct dasd_device *) cqr->device;
+ device = (struct dasd_device *) cqr->startdev;
if (cqr->retries < 0) {
DEV_MESSAGE(KERN_DEBUG, device,
"start_IO: request %p (%02x/%i) - no retry left.",
cqr, cqr->status, cqr->retries);
- cqr->status = DASD_CQR_FAILED;
+ cqr->status = DASD_CQR_ERROR;
return -EIO;
}
cqr->startclk = get_clock();
@@ -833,8 +877,7 @@ dasd_start_IO(struct dasd_ccw_req * cqr)
* The head of the ccw queue will have status DASD_CQR_IN_IO for 1),
* DASD_CQR_QUEUED for 2) and 3).
*/
-static void
-dasd_timeout_device(unsigned long ptr)
+static void dasd_device_timeout(unsigned long ptr)
{
unsigned long flags;
struct dasd_device *device;
@@ -844,14 +887,13 @@ dasd_timeout_device(unsigned long ptr)
/* re-activate request queue */
device->stopped &= ~DASD_STOPPED_PENDING;
spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
- dasd_schedule_bh(device);
+ dasd_schedule_device_bh(device);
}
/*
* Setup timeout for a device in jiffies.
*/
-void
-dasd_set_timer(struct dasd_device *device, int expires)
+void dasd_device_set_timer(struct dasd_device *device, int expires)
{
if (expires == 0) {
if (timer_pending(&device->timer))
@@ -862,7 +904,7 @@ dasd_set_timer(struct dasd_device *device, int expires)
if (mod_timer(&device->timer, jiffies + expires))
return;
}
- device->timer.function = dasd_timeout_device;
+ device->timer.function = dasd_device_timeout;
device->timer.data = (unsigned long) device;
device->timer.expires = jiffies + expires;
add_timer(&device->timer);
@@ -871,15 +913,14 @@ dasd_set_timer(struct dasd_device *device, int expires)
/*
* Clear timeout for a device.
*/
-void
-dasd_clear_timer(struct dasd_device *device)
+void dasd_device_clear_timer(struct dasd_device *device)
{
if (timer_pending(&device->timer))
del_timer(&device->timer);
}
-static void
-dasd_handle_killed_request(struct ccw_device *cdev, unsigned long intparm)
+static void dasd_handle_killed_request(struct ccw_device *cdev,
+ unsigned long intparm)
{
struct dasd_ccw_req *cqr;
struct dasd_device *device;
@@ -893,7 +934,7 @@ dasd_handle_killed_request(struct ccw_device *cdev, unsigned long intparm)
return;
}
- device = (struct dasd_device *) cqr->device;
+ device = (struct dasd_device *) cqr->startdev;
if (device == NULL ||
device != dasd_device_from_cdev_locked(cdev) ||
strncmp(device->discipline->ebcname, (char *) &cqr->magic, 4)) {
@@ -905,46 +946,32 @@ dasd_handle_killed_request(struct ccw_device *cdev, unsigned long intparm)
/* Schedule request to be retried. */
cqr->status = DASD_CQR_QUEUED;
- dasd_clear_timer(device);
- dasd_schedule_bh(device);
+ dasd_device_clear_timer(device);
+ dasd_schedule_device_bh(device);
dasd_put_device(device);
}
-static void
-dasd_handle_state_change_pending(struct dasd_device *device)
+void dasd_generic_handle_state_change(struct dasd_device *device)
{
- struct dasd_ccw_req *cqr;
- struct list_head *l, *n;
-
/* First of all start sense subsystem status request. */
dasd_eer_snss(device);
device->stopped &= ~DASD_STOPPED_PENDING;
-
- /* restart all 'running' IO on queue */
- list_for_each_safe(l, n, &device->ccw_queue) {
- cqr = list_entry(l, struct dasd_ccw_req, list);
- if (cqr->status == DASD_CQR_IN_IO) {
- cqr->status = DASD_CQR_QUEUED;
- }
- }
- dasd_clear_timer(device);
- dasd_schedule_bh(device);
+ dasd_schedule_device_bh(device);
+ if (device->block)
+ dasd_schedule_block_bh(device->block);
}
/*
* Interrupt handler for "normal" ssch-io based dasd devices.
*/
-void
-dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
- struct irb *irb)
+void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
+ struct irb *irb)
{
struct dasd_ccw_req *cqr, *next;
struct dasd_device *device;
unsigned long long now;
int expires;
- dasd_era_t era;
- char mask;
if (IS_ERR(irb)) {
switch (PTR_ERR(irb)) {
@@ -969,29 +996,25 @@ dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
cdev->dev.bus_id, ((irb->scsw.cstat<<8)|irb->scsw.dstat),
(unsigned int) intparm);
- /* first of all check for state change pending interrupt */
- mask = DEV_STAT_ATTENTION | DEV_STAT_DEV_END | DEV_STAT_UNIT_EXCEP;
- if ((irb->scsw.dstat & mask) == mask) {
+ /* check for unsolicited interrupts */
+ cqr = (struct dasd_ccw_req *) intparm;
+ if (!cqr || ((irb->scsw.cc == 1) &&
+ (irb->scsw.fctl & SCSW_FCTL_START_FUNC) &&
+ (irb->scsw.stctl & SCSW_STCTL_STATUS_PEND)) ) {
+ if (cqr && cqr->status == DASD_CQR_IN_IO)
+ cqr->status = DASD_CQR_QUEUED;
device = dasd_device_from_cdev_locked(cdev);
if (!IS_ERR(device)) {
- dasd_handle_state_change_pending(device);
+ dasd_device_clear_timer(device);
+ device->discipline->handle_unsolicited_interrupt(device,
+ irb);
dasd_put_device(device);
}
return;
}
- cqr = (struct dasd_ccw_req *) intparm;
-
- /* check for unsolicited interrupts */
- if (cqr == NULL) {
- MESSAGE(KERN_DEBUG,
- "unsolicited interrupt received: bus_id %s",
- cdev->dev.bus_id);
- return;
- }
-
- device = (struct dasd_device *) cqr->device;
- if (device == NULL ||
+ device = (struct dasd_device *) cqr->startdev;
+ if (!device ||
strncmp(device->discipline->ebcname, (char *) &cqr->magic, 4)) {
MESSAGE(KERN_DEBUG, "invalid device in request: bus_id %s",
cdev->dev.bus_id);
@@ -999,12 +1022,12 @@ dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
}
/* Check for clear pending */
- if (cqr->status == DASD_CQR_CLEAR &&
+ if (cqr->status == DASD_CQR_CLEAR_PENDING &&
irb->scsw.fctl & SCSW_FCTL_CLEAR_FUNC) {
- cqr->status = DASD_CQR_QUEUED;
- dasd_clear_timer(device);
+ cqr->status = DASD_CQR_CLEARED;
+ dasd_device_clear_timer(device);
wake_up(&dasd_flush_wq);
- dasd_schedule_bh(device);
+ dasd_schedule_device_bh(device);
return;
}
@@ -1017,277 +1040,170 @@ dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
}
DBF_DEV_EVENT(DBF_DEBUG, device, "Int: CS/DS 0x%04x for cqr %p",
((irb->scsw.cstat << 8) | irb->scsw.dstat), cqr);
-
- /* Find out the appropriate era_action. */
- if (irb->scsw.fctl & SCSW_FCTL_HALT_FUNC)
- era = dasd_era_fatal;
- else if (irb->scsw.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END) &&
- irb->scsw.cstat == 0 &&
- !irb->esw.esw0.erw.cons)
- era = dasd_era_none;
- else if (irb->esw.esw0.erw.cons)
- era = device->discipline->examine_error(cqr, irb);
- else
- era = dasd_era_recover;
-
- DBF_DEV_EVENT(DBF_DEBUG, device, "era_code %d", era);
+ next = NULL;
expires = 0;
- if (era == dasd_era_none) {
- cqr->status = DASD_CQR_DONE;
+ if (irb->scsw.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END) &&
+ irb->scsw.cstat == 0 && !irb->esw.esw0.erw.cons) {
+ /* request was completed successfully */
+ cqr->status = DASD_CQR_SUCCESS;
cqr->stopclk = now;
/* Start first request on queue if possible -> fast_io. */
- if (cqr->list.next != &device->ccw_queue) {
- next = list_entry(cqr->list.next,
- struct dasd_ccw_req, list);
- if ((next->status == DASD_CQR_QUEUED) &&
- (!device->stopped)) {
- if (device->discipline->start_IO(next) == 0)
- expires = next->expires;
- else
- DEV_MESSAGE(KERN_DEBUG, device, "%s",
- "Interrupt fastpath "
- "failed!");
- }
+ if (cqr->devlist.next != &device->ccw_queue) {
+ next = list_entry(cqr->devlist.next,
+ struct dasd_ccw_req, devlist);
}
- } else { /* error */
- memcpy(&cqr->irb, irb, sizeof (struct irb));
+ } else { /* error */
+ memcpy(&cqr->irb, irb, sizeof(struct irb));
if (device->features & DASD_FEATURE_ERPLOG) {
- /* dump sense data */
dasd_log_sense(cqr, irb);
}
- switch (era) {
- case dasd_era_fatal:
- cqr->status = DASD_CQR_FAILED;
- cqr->stopclk = now;
- break;
- case dasd_era_recover:
+ /* If we have no sense data, or we just don't want complex ERP
+ * for this request, but if we have retries left, then just
+ * reset this request and retry it in the fastpath
+ */
+ if (!(cqr->irb.esw.esw0.erw.cons &&
+ test_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags)) &&
+ cqr->retries > 0) {
+ DEV_MESSAGE(KERN_DEBUG, device,
+ "default ERP in fastpath (%i retries left)",
+ cqr->retries);
+ cqr->lpm = LPM_ANYPATH;
+ cqr->status = DASD_CQR_QUEUED;
+ next = cqr;
+ } else
cqr->status = DASD_CQR_ERROR;
- break;
- default:
- BUG();
- }
+ }
+ if (next && (next->status == DASD_CQR_QUEUED) &&
+ (!device->stopped)) {
+ if (device->discipline->start_IO(next) == 0)
+ expires = next->expires;
+ else
+ DEV_MESSAGE(KERN_DEBUG, device, "%s",
+ "Interrupt fastpath "
+ "failed!");
}
if (expires != 0)
- dasd_set_timer(device, expires);
+ dasd_device_set_timer(device, expires);
else
- dasd_clear_timer(device);
- dasd_schedule_bh(device);
+ dasd_device_clear_timer(device);
+ dasd_schedule_device_bh(device);
}
/*
- * posts the buffer_cache about a finalized request
+ * If we have an error on a dasd_block layer request then we cancel
+ * and return all further requests from the same dasd_block as well.
*/
-static inline void
-dasd_end_request(struct request *req, int uptodate)
+static void __dasd_device_recovery(struct dasd_device *device,
+ struct dasd_ccw_req *ref_cqr)
{
- if (end_that_request_first(req, uptodate, req->hard_nr_sectors))
- BUG();
- add_disk_randomness(req->rq_disk);
- end_that_request_last(req, uptodate);
-}
+ struct list_head *l, *n;
+ struct dasd_ccw_req *cqr;
-/*
- * Process finished error recovery ccw.
- */
-static inline void
-__dasd_process_erp(struct dasd_device *device, struct dasd_ccw_req *cqr)
-{
- dasd_erp_fn_t erp_fn;
+ /*
+ * only requeue request that came from the dasd_block layer
+ */
+ if (!ref_cqr->block)
+ return;
- if (cqr->status == DASD_CQR_DONE)
- DBF_DEV_EVENT(DBF_NOTICE, device, "%s", "ERP successful");
- else
- DEV_MESSAGE(KERN_ERR, device, "%s", "ERP unsuccessful");
- erp_fn = device->discipline->erp_postaction(cqr);
- erp_fn(cqr);
-}
+ list_for_each_safe(l, n, &device->ccw_queue) {
+ cqr = list_entry(l, struct dasd_ccw_req, devlist);
+ if (cqr->status == DASD_CQR_QUEUED &&
+ ref_cqr->block == cqr->block) {
+ cqr->status = DASD_CQR_CLEARED;
+ }
+ }
+};
/*
- * Process ccw request queue.
+ * Remove those ccw requests from the queue that need to be returned
+ * to the upper layer.
*/
-static void
-__dasd_process_ccw_queue(struct dasd_device * device,
- struct list_head *final_queue)
+static void __dasd_device_process_ccw_queue(struct dasd_device *device,
+ struct list_head *final_queue)
{
struct list_head *l, *n;
struct dasd_ccw_req *cqr;
- dasd_erp_fn_t erp_fn;
-restart:
/* Process request with final status. */
list_for_each_safe(l, n, &device->ccw_queue) {
- cqr = list_entry(l, struct dasd_ccw_req, list);
+ cqr = list_entry(l, struct dasd_ccw_req, devlist);
+
/* Stop list processing at the first non-final request. */
- if (cqr->status != DASD_CQR_DONE &&
- cqr->status != DASD_CQR_FAILED &&
- cqr->status != DASD_CQR_ERROR)
+ if (cqr->status == DASD_CQR_QUEUED ||
+ cqr->status == DASD_CQR_IN_IO ||
+ cqr->status == DASD_CQR_CLEAR_PENDING)
break;
- /* Process requests with DASD_CQR_ERROR */
if (cqr->status == DASD_CQR_ERROR) {
- if (cqr->irb.scsw.fctl & SCSW_FCTL_HALT_FUNC) {
- cqr->status = DASD_CQR_FAILED;
- cqr->stopclk = get_clock();
- } else {
- if (cqr->irb.esw.esw0.erw.cons &&
- test_bit(DASD_CQR_FLAGS_USE_ERP,
- &cqr->flags)) {
- erp_fn = device->discipline->
- erp_action(cqr);
- erp_fn(cqr);
- } else
- dasd_default_erp_action(cqr);
- }
- goto restart;
- }
-
- /* First of all call extended error reporting. */
- if (dasd_eer_enabled(device) &&
- cqr->status == DASD_CQR_FAILED) {
- dasd_eer_write(device, cqr, DASD_EER_FATALERROR);
-
- /* restart request */
- cqr->status = DASD_CQR_QUEUED;
- cqr->retries = 255;
- device->stopped |= DASD_STOPPED_QUIESCE;
- goto restart;
+ __dasd_device_recovery(device, cqr);
}
-
- /* Process finished ERP request. */
- if (cqr->refers) {
- __dasd_process_erp(device, cqr);
- goto restart;
- }
-
/* Rechain finished requests to final queue */
- cqr->endclk = get_clock();
- list_move_tail(&cqr->list, final_queue);
+ list_move_tail(&cqr->devlist, final_queue);
}
}
-static void
-dasd_end_request_cb(struct dasd_ccw_req * cqr, void *data)
-{
- struct request *req;
- struct dasd_device *device;
- int status;
-
- req = (struct request *) data;
- device = cqr->device;
- dasd_profile_end(device, cqr, req);
- status = cqr->device->discipline->free_cp(cqr,req);
- spin_lock_irq(&device->request_queue_lock);
- dasd_end_request(req, status);
- spin_unlock_irq(&device->request_queue_lock);
-}
-
-
/*
- * Fetch requests from the block device queue.
+ * the cqrs from the final queue are returned to the upper layer
+ * by setting a dasd_block state and calling the callback function
*/
-static void
-__dasd_process_blk_queue(struct dasd_device * device)
+static void __dasd_device_process_final_queue(struct dasd_device *device,
+ struct list_head *final_queue)
{
- struct request_queue *queue;
- struct request *req;
+ struct list_head *l, *n;
struct dasd_ccw_req *cqr;
- int nr_queued;
-
- queue = device->request_queue;
- /* No queue ? Then there is nothing to do. */
- if (queue == NULL)
- return;
-
- /*
- * We requeue request from the block device queue to the ccw
- * queue only in two states. In state DASD_STATE_READY the
- * partition detection is done and we need to requeue requests
- * for that. State DASD_STATE_ONLINE is normal block device
- * operation.
- */
- if (device->state != DASD_STATE_READY &&
- device->state != DASD_STATE_ONLINE)
- return;
- nr_queued = 0;
- /* Now we try to fetch requests from the request queue */
- list_for_each_entry(cqr, &device->ccw_queue, list)
- if (cqr->status == DASD_CQR_QUEUED)
- nr_queued++;
- while (!blk_queue_plugged(queue) &&
- elv_next_request(queue) &&
- nr_queued < DASD_CHANQ_MAX_SIZE) {
- req = elv_next_request(queue);
- if (device->features & DASD_FEATURE_READONLY &&
- rq_data_dir(req) == WRITE) {
- DBF_DEV_EVENT(DBF_ERR, device,
- "Rejecting write request %p",
- req);
- blkdev_dequeue_request(req);
- dasd_end_request(req, 0);
- continue;
- }
- if (device->stopped & DASD_STOPPED_DC_EIO) {
- blkdev_dequeue_request(req);
- dasd_end_request(req, 0);
- continue;
- }
- cqr = device->discipline->build_cp(device, req);
- if (IS_ERR(cqr)) {
- if (PTR_ERR(cqr) == -ENOMEM)
- break; /* terminate request queue loop */
- if (PTR_ERR(cqr) == -EAGAIN) {
- /*
- * The current request cannot be build right
- * now, we have to try later. If this request
- * is the head-of-queue we stop the device
- * for 1/2 second.
- */
- if (!list_empty(&device->ccw_queue))
- break;
- device->stopped |= DASD_STOPPED_PENDING;
- dasd_set_timer(device, HZ/2);
- break;
- }
- DBF_DEV_EVENT(DBF_ERR, device,
- "CCW creation failed (rc=%ld) "
- "on request %p",
- PTR_ERR(cqr), req);
- blkdev_dequeue_request(req);
- dasd_end_request(req, 0);
- continue;
+ list_for_each_safe(l, n, final_queue) {
+ cqr = list_entry(l, struct dasd_ccw_req, devlist);
+ list_del_init(&cqr->devlist);
+ if (cqr->block)
+ spin_lock_bh(&cqr->block->queue_lock);
+ switch (cqr->status) {
+ case DASD_CQR_SUCCESS:
+ cqr->status = DASD_CQR_DONE;
+ break;
+ case DASD_CQR_ERROR:
+ cqr->status = DASD_CQR_NEED_ERP;
+ break;
+ case DASD_CQR_CLEARED:
+ cqr->status = DASD_CQR_TERMINATED;
+ break;
+ default:
+ DEV_MESSAGE(KERN_ERR, device,
+ "wrong cqr status in __dasd_process_final_queue "
+ "for cqr %p, status %x",
+ cqr, cqr->status);
+ BUG();
}
- cqr->callback = dasd_end_request_cb;
- cqr->callback_data = (void *) req;
- cqr->status = DASD_CQR_QUEUED;
- blkdev_dequeue_request(req);
- list_add_tail(&cqr->list, &device->ccw_queue);
- dasd_profile_start(device, cqr, req);
- nr_queued++;
+ if (cqr->block)
+ spin_unlock_bh(&cqr->block->queue_lock);
+ if (cqr->callback != NULL)
+ (cqr->callback)(cqr, cqr->callback_data);
}
}
+
+
/*
* Take a look at the first request on the ccw queue and check
* if it reached its expire time. If so, terminate the IO.
*/
-static void
-__dasd_check_expire(struct dasd_device * device)
+static void __dasd_device_check_expire(struct dasd_device *device)
{
struct dasd_ccw_req *cqr;
if (list_empty(&device->ccw_queue))
return;
- cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, list);
+ cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist);
if ((cqr->status == DASD_CQR_IN_IO && cqr->expires != 0) &&
(time_after_eq(jiffies, cqr->expires + cqr->starttime))) {
if (device->discipline->term_IO(cqr) != 0) {
/* Hmpf, try again in 5 sec */
- dasd_set_timer(device, 5*HZ);
DEV_MESSAGE(KERN_ERR, device,
"internal error - timeout (%is) expired "
"for cqr %p, termination failed, "
"retrying in 5s",
(cqr->expires/HZ), cqr);
+ cqr->expires += 5*HZ;
+ dasd_device_set_timer(device, 5*HZ);
} else {
DEV_MESSAGE(KERN_ERR, device,
"internal error - timeout (%is) expired "
@@ -1301,77 +1217,53 @@ __dasd_check_expire(struct dasd_device * device)
* Take a look at the first request on the ccw queue and check
* if it needs to be started.
*/
-static void
-__dasd_start_head(struct dasd_device * device)
+static void __dasd_device_start_head(struct dasd_device *device)
{
struct dasd_ccw_req *cqr;
int rc;
if (list_empty(&device->ccw_queue))
return;
- cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, list);
+ cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist);
if (cqr->status != DASD_CQR_QUEUED)
return;
- /* Non-temporary stop condition will trigger fail fast */
- if (device->stopped & ~DASD_STOPPED_PENDING &&
- test_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags) &&
- (!dasd_eer_enabled(device))) {
- cqr->status = DASD_CQR_FAILED;
- dasd_schedule_bh(device);
+ /* when device is stopped, return request to previous layer */
+ if (device->stopped) {
+ cqr->status = DASD_CQR_CLEARED;
+ dasd_schedule_device_bh(device);
return;
}
- /* Don't try to start requests if device is stopped */
- if (device->stopped)
- return;
rc = device->discipline->start_IO(cqr);
if (rc == 0)
- dasd_set_timer(device, cqr->expires);
+ dasd_device_set_timer(device, cqr->expires);
else if (rc == -EACCES) {
- dasd_schedule_bh(device);
+ dasd_schedule_device_bh(device);
} else
/* Hmpf, try again in 1/2 sec */
- dasd_set_timer(device, 50);
-}
-
-static inline int
-_wait_for_clear(struct dasd_ccw_req *cqr)
-{
- return (cqr->status == DASD_CQR_QUEUED);
+ dasd_device_set_timer(device, 50);
}
/*
- * Remove all requests from the ccw queue (all = '1') or only block device
- * requests in case all = '0'.
- * Take care of the erp-chain (chained via cqr->refers) and remove either
- * the whole erp-chain or none of the erp-requests.
- * If a request is currently running, term_IO is called and the request
- * is re-queued. Prior to removing the terminated request we need to wait
- * for the clear-interrupt.
- * In case termination is not possible we stop processing and just finishing
- * the already moved requests.
+ * Go through all request on the dasd_device request queue,
+ * terminate them on the cdev if necessary, and return them to the
+ * submitting layer via callback.
+ * Note:
+ * Make sure that all 'submitting layers' still exist when
+ * this function is called!. In other words, when 'device' is a base
+ * device then all block layer requests must have been removed before
+ * via dasd_flush_block_queue.
*/
-static int
-dasd_flush_ccw_queue(struct dasd_device * device, int all)
+int dasd_flush_device_queue(struct dasd_device *device)
{
- struct dasd_ccw_req *cqr, *orig, *n;
- int rc, i;
-
+ struct dasd_ccw_req *cqr, *n;
+ int rc;
struct list_head flush_queue;
INIT_LIST_HEAD(&flush_queue);
spin_lock_irq(get_ccwdev_lock(device->cdev));
rc = 0;
-restart:
- list_for_each_entry_safe(cqr, n, &device->ccw_queue, list) {
- /* get original request of erp request-chain */
- for (orig = cqr; orig->refers != NULL; orig = orig->refers);
-
- /* Flush all request or only block device requests? */
- if (all == 0 && cqr->callback != dasd_end_request_cb &&
- orig->callback != dasd_end_request_cb) {
- continue;
- }
+ list_for_each_entry_safe(cqr, n, &device->ccw_queue, devlist) {
/* Check status and move request to flush_queue */
switch (cqr->status) {
case DASD_CQR_IN_IO:
@@ -1387,90 +1279,60 @@ restart:
}
break;
case DASD_CQR_QUEUED:
- case DASD_CQR_ERROR:
- /* set request to FAILED */
cqr->stopclk = get_clock();
- cqr->status = DASD_CQR_FAILED;
+ cqr->status = DASD_CQR_CLEARED;
break;
- default: /* do not touch the others */
+ default: /* no need to modify the others */
break;
}
- /* Rechain request (including erp chain) */
- for (i = 0; cqr != NULL; cqr = cqr->refers, i++) {
- cqr->endclk = get_clock();
- list_move_tail(&cqr->list, &flush_queue);
- }
- if (i > 1)
- /* moved more than one request - need to restart */
- goto restart;
+ list_move_tail(&cqr->devlist, &flush_queue);
}
-
finished:
spin_unlock_irq(get_ccwdev_lock(device->cdev));
- /* Now call the callback function of flushed requests */
-restart_cb:
- list_for_each_entry_safe(cqr, n, &flush_queue, list) {
- if (cqr->status == DASD_CQR_CLEAR) {
- /* wait for clear interrupt! */
- wait_event(dasd_flush_wq, _wait_for_clear(cqr));
- cqr->status = DASD_CQR_FAILED;
- }
- /* Process finished ERP request. */
- if (cqr->refers) {
- __dasd_process_erp(device, cqr);
- /* restart list_for_xx loop since dasd_process_erp
- * might remove multiple elements */
- goto restart_cb;
- }
- /* call the callback function */
- cqr->endclk = get_clock();
- if (cqr->callback != NULL)
- (cqr->callback)(cqr, cqr->callback_data);
- }
+ /*
+ * After this point all requests must be in state CLEAR_PENDING,
+ * CLEARED, SUCCESS or ERROR. Now wait for CLEAR_PENDING to become
+ * one of the others.
+ */
+ list_for_each_entry_safe(cqr, n, &flush_queue, devlist)
+ wait_event(dasd_flush_wq,
+ (cqr->status != DASD_CQR_CLEAR_PENDING));
+ /*
+ * Now set each request back to TERMINATED, DONE or NEED_ERP
+ * and call the callback function of flushed requests
+ */
+ __dasd_device_process_final_queue(device, &flush_queue);
return rc;
}
/*
* Acquire the device lock and process queues for the device.
*/
-static void
-dasd_tasklet(struct dasd_device * device)
+static void dasd_device_tasklet(struct dasd_device *device)
{
struct list_head final_queue;
- struct list_head *l, *n;
- struct dasd_ccw_req *cqr;
atomic_set (&device->tasklet_scheduled, 0);
INIT_LIST_HEAD(&final_queue);
spin_lock_irq(get_ccwdev_lock(device->cdev));
/* Check expire time of first request on the ccw queue. */
- __dasd_check_expire(device);
- /* Finish off requests on ccw queue */
- __dasd_process_ccw_queue(device, &final_queue);
+ __dasd_device_check_expire(device);
+ /* find final requests on ccw queue */
+ __dasd_device_process_ccw_queue(device, &final_queue);
spin_unlock_irq(get_ccwdev_lock(device->cdev));
/* Now call the callback function of requests with final status */
- list_for_each_safe(l, n, &final_queue) {
- cqr = list_entry(l, struct dasd_ccw_req, list);
- list_del_init(&cqr->list);
- if (cqr->callback != NULL)
- (cqr->callback)(cqr, cqr->callback_data);
- }
- spin_lock_irq(&device->request_queue_lock);
- spin_lock(get_ccwdev_lock(device->cdev));
- /* Get new request from the block device request queue */
- __dasd_process_blk_queue(device);
+ __dasd_device_process_final_queue(device, &final_queue);
+ spin_lock_irq(get_ccwdev_lock(device->cdev));
/* Now check if the head of the ccw queue needs to be started. */
- __dasd_start_head(device);
- spin_unlock(get_ccwdev_lock(device->cdev));
- spin_unlock_irq(&device->request_queue_lock);
+ __dasd_device_start_head(device);
+ spin_unlock_irq(get_ccwdev_lock(device->cdev));
dasd_put_device(device);
}
/*
* Schedules a call to dasd_tasklet over the device tasklet.
*/
-void
-dasd_schedule_bh(struct dasd_device * device)
+void dasd_schedule_device_bh(struct dasd_device *device)
{
/* Protect against rescheduling. */
if (atomic_cmpxchg (&device->tasklet_scheduled, 0, 1) != 0)
@@ -1480,160 +1342,109 @@ dasd_schedule_bh(struct dasd_device * device)
}
/*
- * Queue a request to the head of the ccw_queue. Start the I/O if
- * possible.
+ * Queue a request to the head of the device ccw_queue.
+ * Start the I/O if possible.
*/
-void
-dasd_add_request_head(struct dasd_ccw_req *req)
+void dasd_add_request_head(struct dasd_ccw_req *cqr)
{
struct dasd_device *device;
unsigned long flags;
- device = req->device;
+ device = cqr->startdev;
spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
- req->status = DASD_CQR_QUEUED;
- req->device = device;
- list_add(&req->list, &device->ccw_queue);
+ cqr->status = DASD_CQR_QUEUED;
+ list_add(&cqr->devlist, &device->ccw_queue);
/* let the bh start the request to keep them in order */
- dasd_schedule_bh(device);
+ dasd_schedule_device_bh(device);
spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
}
/*
- * Queue a request to the tail of the ccw_queue. Start the I/O if
- * possible.
+ * Queue a request to the tail of the device ccw_queue.
+ * Start the I/O if possible.
*/
-void
-dasd_add_request_tail(struct dasd_ccw_req *req)
+void dasd_add_request_tail(struct dasd_ccw_req *cqr)
{
struct dasd_device *device;
unsigned long flags;
- device = req->device;
+ device = cqr->startdev;
spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
- req->status = DASD_CQR_QUEUED;
- req->device = device;
- list_add_tail(&req->list, &device->ccw_queue);
+ cqr->status = DASD_CQR_QUEUED;
+ list_add_tail(&cqr->devlist, &device->ccw_queue);
/* let the bh start the request to keep them in order */
- dasd_schedule_bh(device);
+ dasd_schedule_device_bh(device);
spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
}
/*
- * Wakeup callback.
+ * Wakeup helper for the 'sleep_on' functions.
*/
-static void
-dasd_wakeup_cb(struct dasd_ccw_req *cqr, void *data)
+static void dasd_wakeup_cb(struct dasd_ccw_req *cqr, void *data)
{
wake_up((wait_queue_head_t *) data);
}
-static inline int
-_wait_for_wakeup(struct dasd_ccw_req *cqr)
+static inline int _wait_for_wakeup(struct dasd_ccw_req *cqr)
{
struct dasd_device *device;
int rc;
- device = cqr->device;
+ device = cqr->startdev;
spin_lock_irq(get_ccwdev_lock(device->cdev));
rc = ((cqr->status == DASD_CQR_DONE ||
- cqr->status == DASD_CQR_FAILED) &&
- list_empty(&cqr->list));
+ cqr->status == DASD_CQR_NEED_ERP ||
+ cqr->status == DASD_CQR_TERMINATED) &&
+ list_empty(&cqr->devlist));
spin_unlock_irq(get_ccwdev_lock(device->cdev));
return rc;
}
/*
- * Attempts to start a special ccw queue and waits for its completion.
+ * Queue a request to the tail of the device ccw_queue and wait for
+ * it's completion.
*/
-int
-dasd_sleep_on(struct dasd_ccw_req * cqr)
+int dasd_sleep_on(struct dasd_ccw_req *cqr)
{
wait_queue_head_t wait_q;
struct dasd_device *device;
int rc;
- device = cqr->device;
- spin_lock_irq(get_ccwdev_lock(device->cdev));
+ device = cqr->startdev;
init_waitqueue_head (&wait_q);
cqr->callback = dasd_wakeup_cb;
cqr->callback_data = (void *) &wait_q;
- cqr->status = DASD_CQR_QUEUED;
- list_add_tail(&cqr->list, &device->ccw_queue);
-
- /* let the bh start the request to keep them in order */
- dasd_schedule_bh(device);
-
- spin_unlock_irq(get_ccwdev_lock(device->cdev));
-
+ dasd_add_request_tail(cqr);
wait_event(wait_q, _wait_for_wakeup(cqr));
/* Request status is either done or failed. */
- rc = (cqr->status == DASD_CQR_FAILED) ? -EIO : 0;
+ rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO;
return rc;
}
/*
- * Attempts to start a special ccw queue and wait interruptible
- * for its completion.
+ * Queue a request to the tail of the device ccw_queue and wait
+ * interruptible for it's completion.
*/
-int
-dasd_sleep_on_interruptible(struct dasd_ccw_req * cqr)
+int dasd_sleep_on_interruptible(struct dasd_ccw_req *cqr)
{
wait_queue_head_t wait_q;
struct dasd_device *device;
- int rc, finished;
-
- device = cqr->device;
- spin_lock_irq(get_ccwdev_lock(device->cdev));
+ int rc;
+ device = cqr->startdev;
init_waitqueue_head (&wait_q);
cqr->callback = dasd_wakeup_cb;
cqr->callback_data = (void *) &wait_q;
- cqr->status = DASD_CQR_QUEUED;
- list_add_tail(&cqr->list, &device->ccw_queue);
-
- /* let the bh start the request to keep them in order */
- dasd_schedule_bh(device);
- spin_unlock_irq(get_ccwdev_lock(device->cdev));
-
- finished = 0;
- while (!finished) {
- rc = wait_event_interruptible(wait_q, _wait_for_wakeup(cqr));
- if (rc != -ERESTARTSYS) {
- /* Request is final (done or failed) */
- rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO;
- break;
- }
- spin_lock_irq(get_ccwdev_lock(device->cdev));
- switch (cqr->status) {
- case DASD_CQR_IN_IO:
- /* terminate runnig cqr */
- if (device->discipline->term_IO) {
- cqr->retries = -1;
- device->discipline->term_IO(cqr);
- /* wait (non-interruptible) for final status
- * because signal ist still pending */
- spin_unlock_irq(get_ccwdev_lock(device->cdev));
- wait_event(wait_q, _wait_for_wakeup(cqr));
- spin_lock_irq(get_ccwdev_lock(device->cdev));
- rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO;
- finished = 1;
- }
- break;
- case DASD_CQR_QUEUED:
- /* request */
- list_del_init(&cqr->list);
- rc = -EIO;
- finished = 1;
- break;
- default:
- /* cqr with 'non-interruptable' status - just wait */
- break;
- }
- spin_unlock_irq(get_ccwdev_lock(device->cdev));
+ dasd_add_request_tail(cqr);
+ rc = wait_event_interruptible(wait_q, _wait_for_wakeup(cqr));
+ if (rc == -ERESTARTSYS) {
+ dasd_cancel_req(cqr);
+ /* wait (non-interruptible) for final status */
+ wait_event(wait_q, _wait_for_wakeup(cqr));
}
+ rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO;
return rc;
}
@@ -1643,25 +1454,23 @@ dasd_sleep_on_interruptible(struct dasd_ccw_req * cqr)
* and be put back to status queued, before the special request is added
* to the head of the queue. Then the special request is waited on normally.
*/
-static inline int
-_dasd_term_running_cqr(struct dasd_device *device)
+static inline int _dasd_term_running_cqr(struct dasd_device *device)
{
struct dasd_ccw_req *cqr;
if (list_empty(&device->ccw_queue))
return 0;
- cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, list);
+ cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, devlist);
return device->discipline->term_IO(cqr);
}
-int
-dasd_sleep_on_immediatly(struct dasd_ccw_req * cqr)
+int dasd_sleep_on_immediatly(struct dasd_ccw_req *cqr)
{
wait_queue_head_t wait_q;
struct dasd_device *device;
int rc;
- device = cqr->device;
+ device = cqr->startdev;
spin_lock_irq(get_ccwdev_lock(device->cdev));
rc = _dasd_term_running_cqr(device);
if (rc) {
@@ -1673,17 +1482,17 @@ dasd_sleep_on_immediatly(struct dasd_ccw_req * cqr)
cqr->callback = dasd_wakeup_cb;
cqr->callback_data = (void *) &wait_q;
cqr->status = DASD_CQR_QUEUED;
- list_add(&cqr->list, &device->ccw_queue);
+ list_add(&cqr->devlist, &device->ccw_queue);
/* let the bh start the request to keep them in order */
- dasd_schedule_bh(device);
+ dasd_schedule_device_bh(device);
spin_unlock_irq(get_ccwdev_lock(device->cdev));
wait_event(wait_q, _wait_for_wakeup(cqr));
/* Request status is either done or failed. */
- rc = (cqr->status == DASD_CQR_FAILED) ? -EIO : 0;
+ rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO;
return rc;
}
@@ -1692,11 +1501,14 @@ dasd_sleep_on_immediatly(struct dasd_ccw_req * cqr)
* This is useful to timeout requests. The request will be
* terminated if it is currently in i/o.
* Returns 1 if the request has been terminated.
+ * 0 if there was no need to terminate the request (not started yet)
+ * negative error code if termination failed
+ * Cancellation of a request is an asynchronous operation! The calling
+ * function has to wait until the request is properly returned via callback.
*/
-int
-dasd_cancel_req(struct dasd_ccw_req *cqr)
+int dasd_cancel_req(struct dasd_ccw_req *cqr)
{
- struct dasd_device *device = cqr->device;
+ struct dasd_device *device = cqr->startdev;
unsigned long flags;
int rc;
@@ -1704,74 +1516,453 @@ dasd_cancel_req(struct dasd_ccw_req *cqr)
spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
switch (cqr->status) {
case DASD_CQR_QUEUED:
- /* request was not started - just set to failed */
- cqr->status = DASD_CQR_FAILED;
+ /* request was not started - just set to cleared */
+ cqr->status = DASD_CQR_CLEARED;
break;
case DASD_CQR_IN_IO:
/* request in IO - terminate IO and release again */
- if (device->discipline->term_IO(cqr) != 0)
- /* what to do if unable to terminate ??????
- e.g. not _IN_IO */
- cqr->status = DASD_CQR_FAILED;
- cqr->stopclk = get_clock();
- rc = 1;
+ rc = device->discipline->term_IO(cqr);
+ if (rc) {
+ DEV_MESSAGE(KERN_ERR, device,
+ "dasd_cancel_req is unable "
+ " to terminate request %p, rc = %d",
+ cqr, rc);
+ } else {
+ cqr->stopclk = get_clock();
+ rc = 1;
+ }
break;
- case DASD_CQR_DONE:
- case DASD_CQR_FAILED:
- /* already finished - do nothing */
+ default: /* already finished or clear pending - do nothing */
break;
- default:
- DEV_MESSAGE(KERN_ALERT, device,
- "invalid status %02x in request",
- cqr->status);
+ }
+ spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
+ dasd_schedule_device_bh(device);
+ return rc;
+}
+
+
+/*
+ * SECTION: Operations of the dasd_block layer.
+ */
+
+/*
+ * Timeout function for dasd_block. This is used when the block layer
+ * is waiting for something that may not come reliably, (e.g. a state
+ * change interrupt)
+ */
+static void dasd_block_timeout(unsigned long ptr)
+{
+ unsigned long flags;
+ struct dasd_block *block;
+
+ block = (struct dasd_block *) ptr;
+ spin_lock_irqsave(get_ccwdev_lock(block->base->cdev), flags);
+ /* re-activate request queue */
+ block->base->stopped &= ~DASD_STOPPED_PENDING;
+ spin_unlock_irqrestore(get_ccwdev_lock(block->base->cdev), flags);
+ dasd_schedule_block_bh(block);
+}
+
+/*
+ * Setup timeout for a dasd_block in jiffies.
+ */
+void dasd_block_set_timer(struct dasd_block *block, int expires)
+{
+ if (expires == 0) {
+ if (timer_pending(&block->timer))
+ del_timer(&block->timer);
+ return;
+ }
+ if (timer_pending(&block->timer)) {
+ if (mod_timer(&block->timer, jiffies + expires))
+ return;
+ }
+ block->timer.function = dasd_block_timeout;
+ block->timer.data = (unsigned long) block;
+ block->timer.expires = jiffies + expires;
+ add_timer(&block->timer);
+}
+
+/*
+ * Clear timeout for a dasd_block.
+ */
+void dasd_block_clear_timer(struct dasd_block *block)
+{
+ if (timer_pending(&block->timer))
+ del_timer(&block->timer);
+}
+
+/*
+ * posts the buffer_cache about a finalized request
+ */
+static inline void dasd_end_request(struct request *req, int uptodate)
+{
+ if (end_that_request_first(req, uptodate, req->hard_nr_sectors))
BUG();
+ add_disk_randomness(req->rq_disk);
+ end_that_request_last(req, uptodate);
+}
+
+/*
+ * Process finished error recovery ccw.
+ */
+static inline void __dasd_block_process_erp(struct dasd_block *block,
+ struct dasd_ccw_req *cqr)
+{
+ dasd_erp_fn_t erp_fn;
+ struct dasd_device *device = block->base;
+ if (cqr->status == DASD_CQR_DONE)
+ DBF_DEV_EVENT(DBF_NOTICE, device, "%s", "ERP successful");
+ else
+ DEV_MESSAGE(KERN_ERR, device, "%s", "ERP unsuccessful");
+ erp_fn = device->discipline->erp_postaction(cqr);
+ erp_fn(cqr);
+}
+
+/*
+ * Fetch requests from the block device queue.
+ */
+static void __dasd_process_request_queue(struct dasd_block *block)
+{
+ struct request_queue *queue;
+ struct request *req;
+ struct dasd_ccw_req *cqr;
+ struct dasd_device *basedev;
+ unsigned long flags;
+ queue = block->request_queue;
+ basedev = block->base;
+ /* No queue ? Then there is nothing to do. */
+ if (queue == NULL)
+ return;
+
+ /*
+ * We requeue request from the block device queue to the ccw
+ * queue only in two states. In state DASD_STATE_READY the
+ * partition detection is done and we need to requeue requests
+ * for that. State DASD_STATE_ONLINE is normal block device
+ * operation.
+ */
+ if (basedev->state < DASD_STATE_READY)
+ return;
+ /* Now we try to fetch requests from the request queue */
+ while (!blk_queue_plugged(queue) &&
+ elv_next_request(queue)) {
+
+ req = elv_next_request(queue);
+
+ if (basedev->features & DASD_FEATURE_READONLY &&
+ rq_data_dir(req) == WRITE) {
+ DBF_DEV_EVENT(DBF_ERR, basedev,
+ "Rejecting write request %p",
+ req);
+ blkdev_dequeue_request(req);
+ dasd_end_request(req, 0);
+ continue;
+ }
+ cqr = basedev->discipline->build_cp(basedev, block, req);
+ if (IS_ERR(cqr)) {
+ if (PTR_ERR(cqr) == -EBUSY)
+ break; /* normal end condition */
+ if (PTR_ERR(cqr) == -ENOMEM)
+ break; /* terminate request queue loop */
+ if (PTR_ERR(cqr) == -EAGAIN) {
+ /*
+ * The current request cannot be build right
+ * now, we have to try later. If this request
+ * is the head-of-queue we stop the device
+ * for 1/2 second.
+ */
+ if (!list_empty(&block->ccw_queue))
+ break;
+ spin_lock_irqsave(get_ccwdev_lock(basedev->cdev), flags);
+ basedev->stopped |= DASD_STOPPED_PENDING;
+ spin_unlock_irqrestore(get_ccwdev_lock(basedev->cdev), flags);
+ dasd_block_set_timer(block, HZ/2);
+ break;
+ }
+ DBF_DEV_EVENT(DBF_ERR, basedev,
+ "CCW creation failed (rc=%ld) "
+ "on request %p",
+ PTR_ERR(cqr), req);
+ blkdev_dequeue_request(req);
+ dasd_end_request(req, 0);
+ continue;
+ }
+ /*
+ * Note: callback is set to dasd_return_cqr_cb in
+ * __dasd_block_start_head to cover erp requests as well
+ */
+ cqr->callback_data = (void *) req;
+ cqr->status = DASD_CQR_FILLED;
+ blkdev_dequeue_request(req);
+ list_add_tail(&cqr->blocklist, &block->ccw_queue);
+ dasd_profile_start(block, cqr, req);
+ }
+}
+
+static void __dasd_cleanup_cqr(struct dasd_ccw_req *cqr)
+{
+ struct request *req;
+ int status;
+
+ req = (struct request *) cqr->callback_data;
+ dasd_profile_end(cqr->block, cqr, req);
+ status = cqr->memdev->discipline->free_cp(cqr, req);
+ dasd_end_request(req, status);
+}
+
+/*
+ * Process ccw request queue.
+ */
+static void __dasd_process_block_ccw_queue(struct dasd_block *block,
+ struct list_head *final_queue)
+{
+ struct list_head *l, *n;
+ struct dasd_ccw_req *cqr;
+ dasd_erp_fn_t erp_fn;
+ unsigned long flags;
+ struct dasd_device *base = block->base;
+
+restart:
+ /* Process request with final status. */
+ list_for_each_safe(l, n, &block->ccw_queue) {
+ cqr = list_entry(l, struct dasd_ccw_req, blocklist);
+ if (cqr->status != DASD_CQR_DONE &&
+ cqr->status != DASD_CQR_FAILED &&
+ cqr->status != DASD_CQR_NEED_ERP &&
+ cqr->status != DASD_CQR_TERMINATED)
+ continue;
+
+ if (cqr->status == DASD_CQR_TERMINATED) {
+ base->discipline->handle_terminated_request(cqr);
+ goto restart;
+ }
+
+ /* Process requests that may be recovered */
+ if (cqr->status == DASD_CQR_NEED_ERP) {
+ if (cqr->irb.esw.esw0.erw.cons &&
+ test_bit(DASD_CQR_FLAGS_USE_ERP,
+ &cqr->flags)) {
+ erp_fn = base->discipline->erp_action(cqr);
+ erp_fn(cqr);
+ }
+ goto restart;
+ }
+
+ /* First of all call extended error reporting. */
+ if (dasd_eer_enabled(base) &&
+ cqr->status == DASD_CQR_FAILED) {
+ dasd_eer_write(base, cqr, DASD_EER_FATALERROR);
+
+ /* restart request */
+ cqr->status = DASD_CQR_FILLED;
+ cqr->retries = 255;
+ spin_lock_irqsave(get_ccwdev_lock(base->cdev), flags);
+ base->stopped |= DASD_STOPPED_QUIESCE;
+ spin_unlock_irqrestore(get_ccwdev_lock(base->cdev),
+ flags);
+ goto restart;
+ }
+
+ /* Process finished ERP request. */
+ if (cqr->refers) {
+ __dasd_block_process_erp(block, cqr);
+ goto restart;
+ }
+
+ /* Rechain finished requests to final queue */
+ cqr->endclk = get_clock();
+ list_move_tail(&cqr->blocklist, final_queue);
+ }
+}
+
+static void dasd_return_cqr_cb(struct dasd_ccw_req *cqr, void *data)
+{
+ dasd_schedule_block_bh(cqr->block);
+}
+
+static void __dasd_block_start_head(struct dasd_block *block)
+{
+ struct dasd_ccw_req *cqr;
+
+ if (list_empty(&block->ccw_queue))
+ return;
+ /* We allways begin with the first requests on the queue, as some
+ * of previously started requests have to be enqueued on a
+ * dasd_device again for error recovery.
+ */
+ list_for_each_entry(cqr, &block->ccw_queue, blocklist) {
+ if (cqr->status != DASD_CQR_FILLED)
+ continue;
+ /* Non-temporary stop condition will trigger fail fast */
+ if (block->base->stopped & ~DASD_STOPPED_PENDING &&
+ test_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags) &&
+ (!dasd_eer_enabled(block->base))) {
+ cqr->status = DASD_CQR_FAILED;
+ dasd_schedule_block_bh(block);
+ continue;
+ }
+ /* Don't try to start requests if device is stopped */
+ if (block->base->stopped)
+ return;
+
+ /* just a fail safe check, should not happen */
+ if (!cqr->startdev)
+ cqr->startdev = block->base;
+
+ /* make sure that the requests we submit find their way back */
+ cqr->callback = dasd_return_cqr_cb;
+
+ dasd_add_request_tail(cqr);
+ }
+}
+
+/*
+ * Central dasd_block layer routine. Takes requests from the generic
+ * block layer request queue, creates ccw requests, enqueues them on
+ * a dasd_device and processes ccw requests that have been returned.
+ */
+static void dasd_block_tasklet(struct dasd_block *block)
+{
+ struct list_head final_queue;
+ struct list_head *l, *n;
+ struct dasd_ccw_req *cqr;
+
+ atomic_set(&block->tasklet_scheduled, 0);
+ INIT_LIST_HEAD(&final_queue);
+ spin_lock(&block->queue_lock);
+ /* Finish off requests on ccw queue */
+ __dasd_process_block_ccw_queue(block, &final_queue);
+ spin_unlock(&block->queue_lock);
+ /* Now call the callback function of requests with final status */
+ spin_lock_irq(&block->request_queue_lock);
+ list_for_each_safe(l, n, &final_queue) {
+ cqr = list_entry(l, struct dasd_ccw_req, blocklist);
+ list_del_init(&cqr->blocklist);
+ __dasd_cleanup_cqr(cqr);
+ }
+ spin_lock(&block->queue_lock);
+ /* Get new request from the block device request queue */
+ __dasd_process_request_queue(block);
+ /* Now check if the head of the ccw queue needs to be started. */
+ __dasd_block_start_head(block);
+ spin_unlock(&block->queue_lock);
+ spin_unlock_irq(&block->request_queue_lock);
+ dasd_put_device(block->base);
+}
+
+static void _dasd_wake_block_flush_cb(struct dasd_ccw_req *cqr, void *data)
+{
+ wake_up(&dasd_flush_wq);
+}
+
+/*
+ * Go through all request on the dasd_block request queue, cancel them
+ * on the respective dasd_device, and return them to the generic
+ * block layer.
+ */
+static int dasd_flush_block_queue(struct dasd_block *block)
+{
+ struct dasd_ccw_req *cqr, *n;
+ int rc, i;
+ struct list_head flush_queue;
+
+ INIT_LIST_HEAD(&flush_queue);
+ spin_lock_bh(&block->queue_lock);
+ rc = 0;
+restart:
+ list_for_each_entry_safe(cqr, n, &block->ccw_queue, blocklist) {
+ /* if this request currently owned by a dasd_device cancel it */
+ if (cqr->status >= DASD_CQR_QUEUED)
+ rc = dasd_cancel_req(cqr);
+ if (rc < 0)
+ break;
+ /* Rechain request (including erp chain) so it won't be
+ * touched by the dasd_block_tasklet anymore.
+ * Replace the callback so we notice when the request
+ * is returned from the dasd_device layer.
+ */
+ cqr->callback = _dasd_wake_block_flush_cb;
+ for (i = 0; cqr != NULL; cqr = cqr->refers, i++)
+ list_move_tail(&cqr->blocklist, &flush_queue);
+ if (i > 1)
+ /* moved more than one request - need to restart */
+ goto restart;
+ }
+ spin_unlock_bh(&block->queue_lock);
+ /* Now call the callback function of flushed requests */
+restart_cb:
+ list_for_each_entry_safe(cqr, n, &flush_queue, blocklist) {
+ wait_event(dasd_flush_wq, (cqr->status < DASD_CQR_QUEUED));
+ /* Process finished ERP request. */
+ if (cqr->refers) {
+ __dasd_block_process_erp(block, cqr);
+ /* restart list_for_xx loop since dasd_process_erp
+ * might remove multiple elements */
+ goto restart_cb;
+ }
+ /* call the callback function */
+ cqr->endclk = get_clock();
+ list_del_init(&cqr->blocklist);
+ __dasd_cleanup_cqr(cqr);
}
- spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
- dasd_schedule_bh(device);
return rc;
}
/*
- * SECTION: Block device operations (request queue, partitions, open, release).
+ * Schedules a call to dasd_tasklet over the device tasklet.
+ */
+void dasd_schedule_block_bh(struct dasd_block *block)
+{
+ /* Protect against rescheduling. */
+ if (atomic_cmpxchg(&block->tasklet_scheduled, 0, 1) != 0)
+ return;
+ /* life cycle of block is bound to it's base device */
+ dasd_get_device(block->base);
+ tasklet_hi_schedule(&block->tasklet);
+}
+
+
+/*
+ * SECTION: external block device operations
+ * (request queue handling, open, release, etc.)
*/
/*
* Dasd request queue function. Called from ll_rw_blk.c
*/
-static void
-do_dasd_request(struct request_queue * queue)
+static void do_dasd_request(struct request_queue *queue)
{
- struct dasd_device *device;
+ struct dasd_block *block;
- device = (struct dasd_device *) queue->queuedata;
- spin_lock(get_ccwdev_lock(device->cdev));
+ block = queue->queuedata;
+ spin_lock(&block->queue_lock);
/* Get new request from the block device request queue */
- __dasd_process_blk_queue(device);
+ __dasd_process_request_queue(block);
/* Now check if the head of the ccw queue needs to be started. */
- __dasd_start_head(device);
- spin_unlock(get_ccwdev_lock(device->cdev));
+ __dasd_block_start_head(block);
+ spin_unlock(&block->queue_lock);
}
/*
* Allocate and initialize request queue and default I/O scheduler.
*/
-static int
-dasd_alloc_queue(struct dasd_device * device)
+static int dasd_alloc_queue(struct dasd_block *block)
{
int rc;
- device->request_queue = blk_init_queue(do_dasd_request,
- &device->request_queue_lock);
- if (device->request_queue == NULL)
+ block->request_queue = blk_init_queue(do_dasd_request,
+ &block->request_queue_lock);
+ if (block->request_queue == NULL)
return -ENOMEM;
- device->request_queue->queuedata = device;
+ block->request_queue->queuedata = block;
- elevator_exit(device->request_queue->elevator);
- rc = elevator_init(device->request_queue, "deadline");
+ elevator_exit(block->request_queue->elevator);
+ rc = elevator_init(block->request_queue, "deadline");
if (rc) {
- blk_cleanup_queue(device->request_queue);
+ blk_cleanup_queue(block->request_queue);
return rc;
}
return 0;
@@ -1780,79 +1971,76 @@ dasd_alloc_queue(struct dasd_device * device)
/*
* Allocate and initialize request queue.
*/
-static void
-dasd_setup_queue(struct dasd_device * device)
+static void dasd_setup_queue(struct dasd_block *block)
{
int max;
- blk_queue_hardsect_size(device->request_queue, device->bp_block);
- max = device->discipline->max_blocks << device->s2b_shift;
- blk_queue_max_sectors(device->request_queue, max);
- blk_queue_max_phys_segments(device->request_queue, -1L);
- blk_queue_max_hw_segments(device->request_queue, -1L);
- blk_queue_max_segment_size(device->request_queue, -1L);
- blk_queue_segment_boundary(device->request_queue, -1L);
- blk_queue_ordered(device->request_queue, QUEUE_ORDERED_TAG, NULL);
+ blk_queue_hardsect_size(block->request_queue, block->bp_block);
+ max = block->base->discipline->max_blocks << block->s2b_shift;
+ blk_queue_max_sectors(block->request_queue, max);
+ blk_queue_max_phys_segments(block->request_queue, -1L);
+ blk_queue_max_hw_segments(block->request_queue, -1L);
+ blk_queue_max_segment_size(block->request_queue, -1L);
+ blk_queue_segment_boundary(block->request_queue, -1L);
+ blk_queue_ordered(block->request_queue, QUEUE_ORDERED_DRAIN, NULL);
}
/*
* Deactivate and free request queue.
*/
-static void
-dasd_free_queue(struct dasd_device * device)
+static void dasd_free_queue(struct dasd_block *block)
{
- if (device->request_queue) {
- blk_cleanup_queue(device->request_queue);
- device->request_queue = NULL;
+ if (block->request_queue) {
+ blk_cleanup_queue(block->request_queue);
+ block->request_queue = NULL;
}
}
/*
* Flush request on the request queue.
*/
-static void
-dasd_flush_request_queue(struct dasd_device * device)
+static void dasd_flush_request_queue(struct dasd_block *block)
{
struct request *req;
- if (!device->request_queue)
+ if (!block->request_queue)
return;
- spin_lock_irq(&device->request_queue_lock);
- while ((req = elv_next_request(device->request_queue))) {
+ spin_lock_irq(&block->request_queue_lock);
+ while ((req = elv_next_request(block->request_queue))) {
blkdev_dequeue_request(req);
dasd_end_request(req, 0);
}
- spin_unlock_irq(&device->request_queue_lock);
+ spin_unlock_irq(&block->request_queue_lock);
}
-static int
-dasd_open(struct inode *inp, struct file *filp)
+static int dasd_open(struct inode *inp, struct file *filp)
{
struct gendisk *disk = inp->i_bdev->bd_disk;
- struct dasd_device *device = disk->private_data;
+ struct dasd_block *block = disk->private_data;
+ struct dasd_device *base = block->base;
int rc;
- atomic_inc(&device->open_count);
- if (test_bit(DASD_FLAG_OFFLINE, &device->flags)) {
+ atomic_inc(&block->open_count);
+ if (test_bit(DASD_FLAG_OFFLINE, &base->flags)) {
rc = -ENODEV;
goto unlock;
}
- if (!try_module_get(device->discipline->owner)) {
+ if (!try_module_get(base->discipline->owner)) {
rc = -EINVAL;
goto unlock;
}
if (dasd_probeonly) {
- DEV_MESSAGE(KERN_INFO, device, "%s",
+ DEV_MESSAGE(KERN_INFO, base, "%s",
"No access to device due to probeonly mode");
rc = -EPERM;
goto out;
}
- if (device->state <= DASD_STATE_BASIC) {
- DBF_DEV_EVENT(DBF_ERR, device, " %s",
+ if (base->state <= DASD_STATE_BASIC) {
+ DBF_DEV_EVENT(DBF_ERR, base, " %s",
" Cannot open unrecognized device");
rc = -ENODEV;
goto out;
@@ -1861,41 +2049,41 @@ dasd_open(struct inode *inp, struct file *filp)
return 0;
out:
- module_put(device->discipline->owner);
+ module_put(base->discipline->owner);
unlock:
- atomic_dec(&device->open_count);
+ atomic_dec(&block->open_count);
return rc;
}
-static int
-dasd_release(struct inode *inp, struct file *filp)
+static int dasd_release(struct inode *inp, struct file *filp)
{
struct gendisk *disk = inp->i_bdev->bd_disk;
- struct dasd_device *device = disk->private_data;
+ struct dasd_block *block = disk->private_data;
- atomic_dec(&device->open_count);
- module_put(device->discipline->owner);
+ atomic_dec(&block->open_count);
+ module_put(block->base->discipline->owner);
return 0;
}
/*
* Return disk geometry.
*/
-static int
-dasd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
+static int dasd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
{
- struct dasd_device *device;
+ struct dasd_block *block;
+ struct dasd_device *base;
- device = bdev->bd_disk->private_data;
- if (!device)
+ block = bdev->bd_disk->private_data;
+ base = block->base;
+ if (!block)
return -ENODEV;
- if (!device->discipline ||
- !device->discipline->fill_geometry)
+ if (!base->discipline ||
+ !base->discipline->fill_geometry)
return -EINVAL;
- device->discipline->fill_geometry(device, geo);
- geo->start = get_start_sect(bdev) >> device->s2b_shift;
+ base->discipline->fill_geometry(block, geo);
+ geo->start = get_start_sect(bdev) >> block->s2b_shift;
return 0;
}
@@ -1909,6 +2097,9 @@ dasd_device_operations = {
.getgeo = dasd_getgeo,
};
+/*******************************************************************************
+ * end of block device operations
+ */
static void
dasd_exit(void)
@@ -1937,9 +2128,8 @@ dasd_exit(void)
* Initial attempt at a probe function. this can be simplified once
* the other detection code is gone.
*/
-int
-dasd_generic_probe (struct ccw_device *cdev,
- struct dasd_discipline *discipline)
+int dasd_generic_probe(struct ccw_device *cdev,
+ struct dasd_discipline *discipline)
{
int ret;
@@ -1969,19 +2159,20 @@ dasd_generic_probe (struct ccw_device *cdev,
ret = ccw_device_set_online(cdev);
if (ret)
printk(KERN_WARNING
- "dasd_generic_probe: could not initially online "
- "ccw-device %s\n", cdev->dev.bus_id);
- return ret;
+ "dasd_generic_probe: could not initially "
+ "online ccw-device %s; return code: %d\n",
+ cdev->dev.bus_id, ret);
+ return 0;
}
/*
* This will one day be called from a global not_oper handler.
* It is also used by driver_unregister during module unload.
*/
-void
-dasd_generic_remove (struct ccw_device *cdev)
+void dasd_generic_remove(struct ccw_device *cdev)
{
struct dasd_device *device;
+ struct dasd_block *block;
cdev->handler = NULL;
@@ -2001,7 +2192,15 @@ dasd_generic_remove (struct ccw_device *cdev)
*/
dasd_set_target_state(device, DASD_STATE_NEW);
/* dasd_delete_device destroys the device reference. */
+ block = device->block;
+ device->block = NULL;
dasd_delete_device(device);
+ /*
+ * life cycle of block is bound to device, so delete it after
+ * device was safely removed
+ */
+ if (block)
+ dasd_free_block(block);
}
/*
@@ -2009,10 +2208,8 @@ dasd_generic_remove (struct ccw_device *cdev)
* the device is detected for the first time and is supposed to be used
* or the user has started activation through sysfs.
*/
-int
-dasd_generic_set_online (struct ccw_device *cdev,
- struct dasd_discipline *base_discipline)
-
+int dasd_generic_set_online(struct ccw_device *cdev,
+ struct dasd_discipline *base_discipline)
{
struct dasd_discipline *discipline;
struct dasd_device *device;
@@ -2048,6 +2245,7 @@ dasd_generic_set_online (struct ccw_device *cdev,
device->base_discipline = base_discipline;
device->discipline = discipline;
+ /* check_device will allocate block device if necessary */
rc = discipline->check_device(device);
if (rc) {
printk (KERN_WARNING
@@ -2067,6 +2265,8 @@ dasd_generic_set_online (struct ccw_device *cdev,
cdev->dev.bus_id);
rc = -ENODEV;
dasd_set_target_state(device, DASD_STATE_NEW);
+ if (device->block)
+ dasd_free_block(device->block);
dasd_delete_device(device);
} else
pr_debug("dasd_generic device %s found\n",
@@ -2081,10 +2281,10 @@ dasd_generic_set_online (struct ccw_device *cdev,
return rc;
}
-int
-dasd_generic_set_offline (struct ccw_device *cdev)
+int dasd_generic_set_offline(struct ccw_device *cdev)
{
struct dasd_device *device;
+ struct dasd_block *block;
int max_count, open_count;
device = dasd_device_from_cdev(cdev);
@@ -2101,30 +2301,39 @@ dasd_generic_set_offline (struct ccw_device *cdev)
* the blkdev_get in dasd_scan_partitions. We are only interested
* in the other openers.
*/
- max_count = device->bdev ? 0 : -1;
- open_count = (int) atomic_read(&device->open_count);
- if (open_count > max_count) {
- if (open_count > 0)
- printk (KERN_WARNING "Can't offline dasd device with "
- "open count = %i.\n",
- open_count);
- else
- printk (KERN_WARNING "%s",
- "Can't offline dasd device due to internal "
- "use\n");
- clear_bit(DASD_FLAG_OFFLINE, &device->flags);
- dasd_put_device(device);
- return -EBUSY;
+ if (device->block) {
+ struct dasd_block *block = device->block;
+ max_count = block->bdev ? 0 : -1;
+ open_count = (int) atomic_read(&block->open_count);
+ if (open_count > max_count) {
+ if (open_count > 0)
+ printk(KERN_WARNING "Can't offline dasd "
+ "device with open count = %i.\n",
+ open_count);
+ else
+ printk(KERN_WARNING "%s",
+ "Can't offline dasd device due "
+ "to internal use\n");
+ clear_bit(DASD_FLAG_OFFLINE, &device->flags);
+ dasd_put_device(device);
+ return -EBUSY;
+ }
}
dasd_set_target_state(device, DASD_STATE_NEW);
/* dasd_delete_device destroys the device reference. */
+ block = device->block;
+ device->block = NULL;
dasd_delete_device(device);
-
+ /*
+ * life cycle of block is bound to device, so delete it after
+ * device was safely removed
+ */
+ if (block)
+ dasd_free_block(block);
return 0;
}
-int
-dasd_generic_notify(struct ccw_device *cdev, int event)
+int dasd_generic_notify(struct ccw_device *cdev, int event)
{
struct dasd_device *device;
struct dasd_ccw_req *cqr;
@@ -2145,27 +2354,22 @@ dasd_generic_notify(struct ccw_device *cdev, int event)
if (device->state < DASD_STATE_BASIC)
break;
/* Device is active. We want to keep it. */
- if (test_bit(DASD_FLAG_DSC_ERROR, &device->flags)) {
- list_for_each_entry(cqr, &device->ccw_queue, list)
- if (cqr->status == DASD_CQR_IN_IO)
- cqr->status = DASD_CQR_FAILED;
- device->stopped |= DASD_STOPPED_DC_EIO;
- } else {
- list_for_each_entry(cqr, &device->ccw_queue, list)
- if (cqr->status == DASD_CQR_IN_IO) {
- cqr->status = DASD_CQR_QUEUED;
- cqr->retries++;
- }
- device->stopped |= DASD_STOPPED_DC_WAIT;
- dasd_set_timer(device, 0);
- }
- dasd_schedule_bh(device);
+ list_for_each_entry(cqr, &device->ccw_queue, devlist)
+ if (cqr->status == DASD_CQR_IN_IO) {
+ cqr->status = DASD_CQR_QUEUED;
+ cqr->retries++;
+ }
+ device->stopped |= DASD_STOPPED_DC_WAIT;
+ dasd_device_clear_timer(device);
+ dasd_schedule_device_bh(device);
ret = 1;
break;
case CIO_OPER:
/* FIXME: add a sanity check. */
- device->stopped &= ~(DASD_STOPPED_DC_WAIT|DASD_STOPPED_DC_EIO);
- dasd_schedule_bh(device);
+ device->stopped &= ~DASD_STOPPED_DC_WAIT;
+ dasd_schedule_device_bh(device);
+ if (device->block)
+ dasd_schedule_block_bh(device->block);
ret = 1;
break;
}
@@ -2195,7 +2399,8 @@ static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device,
ccw->cda = (__u32)(addr_t)rdc_buffer;
ccw->count = rdc_buffer_size;
- cqr->device = device;
+ cqr->startdev = device;
+ cqr->memdev = device;
cqr->expires = 10*HZ;
clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
cqr->retries = 2;
@@ -2217,13 +2422,12 @@ int dasd_generic_read_dev_chars(struct dasd_device *device, char *magic,
return PTR_ERR(cqr);
ret = dasd_sleep_on(cqr);
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
return ret;
}
EXPORT_SYMBOL_GPL(dasd_generic_read_dev_chars);
-static int __init
-dasd_init(void)
+static int __init dasd_init(void)
{
int rc;
@@ -2231,7 +2435,7 @@ dasd_init(void)
init_waitqueue_head(&dasd_flush_wq);
/* register 'common' DASD debug area, used for all DBF_XXX calls */
- dasd_debug_area = debug_register("dasd", 1, 2, 8 * sizeof (long));
+ dasd_debug_area = debug_register("dasd", 1, 1, 8 * sizeof(long));
if (dasd_debug_area == NULL) {
rc = -ENOMEM;
goto failed;
@@ -2277,15 +2481,18 @@ EXPORT_SYMBOL(dasd_diag_discipline_pointer);
EXPORT_SYMBOL(dasd_add_request_head);
EXPORT_SYMBOL(dasd_add_request_tail);
EXPORT_SYMBOL(dasd_cancel_req);
-EXPORT_SYMBOL(dasd_clear_timer);
+EXPORT_SYMBOL(dasd_device_clear_timer);
+EXPORT_SYMBOL(dasd_block_clear_timer);
EXPORT_SYMBOL(dasd_enable_device);
EXPORT_SYMBOL(dasd_int_handler);
EXPORT_SYMBOL(dasd_kfree_request);
EXPORT_SYMBOL(dasd_kick_device);
EXPORT_SYMBOL(dasd_kmalloc_request);
-EXPORT_SYMBOL(dasd_schedule_bh);
+EXPORT_SYMBOL(dasd_schedule_device_bh);
+EXPORT_SYMBOL(dasd_schedule_block_bh);
EXPORT_SYMBOL(dasd_set_target_state);
-EXPORT_SYMBOL(dasd_set_timer);
+EXPORT_SYMBOL(dasd_device_set_timer);
+EXPORT_SYMBOL(dasd_block_set_timer);
EXPORT_SYMBOL(dasd_sfree_request);
EXPORT_SYMBOL(dasd_sleep_on);
EXPORT_SYMBOL(dasd_sleep_on_immediatly);
@@ -2299,4 +2506,7 @@ EXPORT_SYMBOL_GPL(dasd_generic_remove);
EXPORT_SYMBOL_GPL(dasd_generic_notify);
EXPORT_SYMBOL_GPL(dasd_generic_set_online);
EXPORT_SYMBOL_GPL(dasd_generic_set_offline);
-
+EXPORT_SYMBOL_GPL(dasd_generic_handle_state_change);
+EXPORT_SYMBOL_GPL(dasd_flush_device_queue);
+EXPORT_SYMBOL_GPL(dasd_alloc_block);
+EXPORT_SYMBOL_GPL(dasd_free_block);
diff --git a/drivers/s390/block/dasd_3370_erp.c b/drivers/s390/block/dasd_3370_erp.c
deleted file mode 100644
index 1ddab8991d9..00000000000
--- a/drivers/s390/block/dasd_3370_erp.c
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * File...........: linux/drivers/s390/block/dasd_3370_erp.c
- * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
- * Bugreports.to..: <Linux390@de.ibm.com>
- * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2000
- *
- */
-
-#define PRINTK_HEADER "dasd_erp(3370)"
-
-#include "dasd_int.h"
-
-
-/*
- * DASD_3370_ERP_EXAMINE
- *
- * DESCRIPTION
- * Checks only for fatal/no/recover error.
- * A detailed examination of the sense data is done later outside
- * the interrupt handler.
- *
- * The logic is based on the 'IBM 3880 Storage Control Reference' manual
- * 'Chapter 7. 3370 Sense Data'.
- *
- * RETURN VALUES
- * dasd_era_none no error
- * dasd_era_fatal for all fatal (unrecoverable errors)
- * dasd_era_recover for all others.
- */
-dasd_era_t
-dasd_3370_erp_examine(struct dasd_ccw_req * cqr, struct irb * irb)
-{
- char *sense = irb->ecw;
-
- /* check for successful execution first */
- if (irb->scsw.cstat == 0x00 &&
- irb->scsw.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END))
- return dasd_era_none;
- if (sense[0] & 0x80) { /* CMD reject */
- return dasd_era_fatal;
- }
- if (sense[0] & 0x40) { /* Drive offline */
- return dasd_era_recover;
- }
- if (sense[0] & 0x20) { /* Bus out parity */
- return dasd_era_recover;
- }
- if (sense[0] & 0x10) { /* equipment check */
- if (sense[1] & 0x80) {
- return dasd_era_fatal;
- }
- return dasd_era_recover;
- }
- if (sense[0] & 0x08) { /* data check */
- if (sense[1] & 0x80) {
- return dasd_era_fatal;
- }
- return dasd_era_recover;
- }
- if (sense[0] & 0x04) { /* overrun */
- if (sense[1] & 0x80) {
- return dasd_era_fatal;
- }
- return dasd_era_recover;
- }
- if (sense[1] & 0x40) { /* invalid blocksize */
- return dasd_era_fatal;
- }
- if (sense[1] & 0x04) { /* file protected */
- return dasd_era_recover;
- }
- if (sense[1] & 0x01) { /* operation incomplete */
- return dasd_era_recover;
- }
- if (sense[2] & 0x80) { /* check data erroor */
- return dasd_era_recover;
- }
- if (sense[2] & 0x10) { /* Env. data present */
- return dasd_era_recover;
- }
- /* examine the 24 byte sense data */
- return dasd_era_recover;
-
-} /* END dasd_3370_erp_examine */
diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c
index 5b7385e430e..c361ab69ec0 100644
--- a/drivers/s390/block/dasd_3990_erp.c
+++ b/drivers/s390/block/dasd_3990_erp.c
@@ -26,158 +26,6 @@ struct DCTL_data {
/*
*****************************************************************************
- * SECTION ERP EXAMINATION
- *****************************************************************************
- */
-
-/*
- * DASD_3990_ERP_EXAMINE_24
- *
- * DESCRIPTION
- * Checks only for fatal (unrecoverable) error.
- * A detailed examination of the sense data is done later outside
- * the interrupt handler.
- *
- * Each bit configuration leading to an action code 2 (Exit with
- * programming error or unusual condition indication)
- * are handled as fatal errors.
- *
- * All other configurations are handled as recoverable errors.
- *
- * RETURN VALUES
- * dasd_era_fatal for all fatal (unrecoverable errors)
- * dasd_era_recover for all others.
- */
-static dasd_era_t
-dasd_3990_erp_examine_24(struct dasd_ccw_req * cqr, char *sense)
-{
-
- struct dasd_device *device = cqr->device;
-
- /* check for 'Command Reject' */
- if ((sense[0] & SNS0_CMD_REJECT) &&
- (!(sense[2] & SNS2_ENV_DATA_PRESENT))) {
-
- DEV_MESSAGE(KERN_ERR, device, "%s",
- "EXAMINE 24: Command Reject detected - "
- "fatal error");
-
- return dasd_era_fatal;
- }
-
- /* check for 'Invalid Track Format' */
- if ((sense[1] & SNS1_INV_TRACK_FORMAT) &&
- (!(sense[2] & SNS2_ENV_DATA_PRESENT))) {
-
- DEV_MESSAGE(KERN_ERR, device, "%s",
- "EXAMINE 24: Invalid Track Format detected "
- "- fatal error");
-
- return dasd_era_fatal;
- }
-
- /* check for 'No Record Found' */
- if (sense[1] & SNS1_NO_REC_FOUND) {
-
- /* FIXME: fatal error ?!? */
- DEV_MESSAGE(KERN_ERR, device,
- "EXAMINE 24: No Record Found detected %s",
- device->state <= DASD_STATE_BASIC ?
- " " : "- fatal error");
-
- return dasd_era_fatal;
- }
-
- /* return recoverable for all others */
- return dasd_era_recover;
-} /* END dasd_3990_erp_examine_24 */
-
-/*
- * DASD_3990_ERP_EXAMINE_32
- *
- * DESCRIPTION
- * Checks only for fatal/no/recoverable error.
- * A detailed examination of the sense data is done later outside
- * the interrupt handler.
- *
- * RETURN VALUES
- * dasd_era_none no error
- * dasd_era_fatal for all fatal (unrecoverable errors)
- * dasd_era_recover for recoverable others.
- */
-static dasd_era_t
-dasd_3990_erp_examine_32(struct dasd_ccw_req * cqr, char *sense)
-{
-
- struct dasd_device *device = cqr->device;
-
- switch (sense[25]) {
- case 0x00:
- return dasd_era_none;
-
- case 0x01:
- DEV_MESSAGE(KERN_ERR, device, "%s", "EXAMINE 32: fatal error");
-
- return dasd_era_fatal;
-
- default:
-
- return dasd_era_recover;
- }
-
-} /* end dasd_3990_erp_examine_32 */
-
-/*
- * DASD_3990_ERP_EXAMINE
- *
- * DESCRIPTION
- * Checks only for fatal/no/recover error.
- * A detailed examination of the sense data is done later outside
- * the interrupt handler.
- *
- * The logic is based on the 'IBM 3990 Storage Control Reference' manual
- * 'Chapter 7. Error Recovery Procedures'.
- *
- * RETURN VALUES
- * dasd_era_none no error
- * dasd_era_fatal for all fatal (unrecoverable errors)
- * dasd_era_recover for all others.
- */
-dasd_era_t
-dasd_3990_erp_examine(struct dasd_ccw_req * cqr, struct irb * irb)
-{
-
- char *sense = irb->ecw;
- dasd_era_t era = dasd_era_recover;
- struct dasd_device *device = cqr->device;
-
- /* check for successful execution first */
- if (irb->scsw.cstat == 0x00 &&
- irb->scsw.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END))
- return dasd_era_none;
-
- /* distinguish between 24 and 32 byte sense data */
- if (sense[27] & DASD_SENSE_BIT_0) {
-
- era = dasd_3990_erp_examine_24(cqr, sense);
-
- } else {
-
- era = dasd_3990_erp_examine_32(cqr, sense);
-
- }
-
- /* log the erp chain if fatal error occurred */
- if ((era == dasd_era_fatal) && (device->state >= DASD_STATE_READY)) {
- dasd_log_sense(cqr, irb);
- }
-
- return era;
-
-} /* END dasd_3990_erp_examine */
-
-/*
- *****************************************************************************
* SECTION ERP HANDLING
*****************************************************************************
*/
@@ -206,7 +54,7 @@ dasd_3990_erp_cleanup(struct dasd_ccw_req * erp, char final_status)
{
struct dasd_ccw_req *cqr = erp->refers;
- dasd_free_erp_request(erp, erp->device);
+ dasd_free_erp_request(erp, erp->memdev);
cqr->status = final_status;
return cqr;
@@ -224,15 +72,17 @@ static void
dasd_3990_erp_block_queue(struct dasd_ccw_req * erp, int expires)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
+ unsigned long flags;
DEV_MESSAGE(KERN_INFO, device,
"blocking request queue for %is", expires/HZ);
+ spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
device->stopped |= DASD_STOPPED_PENDING;
- erp->status = DASD_CQR_QUEUED;
-
- dasd_set_timer(device, expires);
+ spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
+ erp->status = DASD_CQR_FILLED;
+ dasd_block_set_timer(device->block, expires);
}
/*
@@ -251,7 +101,7 @@ static struct dasd_ccw_req *
dasd_3990_erp_int_req(struct dasd_ccw_req * erp)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
/* first time set initial retry counter and erp_function */
/* and retry once without blocking queue */
@@ -292,11 +142,14 @@ dasd_3990_erp_int_req(struct dasd_ccw_req * erp)
static void
dasd_3990_erp_alternate_path(struct dasd_ccw_req * erp)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
__u8 opm;
+ unsigned long flags;
/* try alternate valid path */
+ spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
opm = ccw_device_get_path_mask(device->cdev);
+ spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
//FIXME: start with get_opm ?
if (erp->lpm == 0)
erp->lpm = LPM_ANYPATH & ~(erp->irb.esw.esw0.sublog.lpum);
@@ -309,9 +162,8 @@ dasd_3990_erp_alternate_path(struct dasd_ccw_req * erp)
"try alternate lpm=%x (lpum=%x / opm=%x)",
erp->lpm, erp->irb.esw.esw0.sublog.lpum, opm);
- /* reset status to queued to handle the request again... */
- if (erp->status > DASD_CQR_QUEUED)
- erp->status = DASD_CQR_QUEUED;
+ /* reset status to submit the request again... */
+ erp->status = DASD_CQR_FILLED;
erp->retries = 1;
} else {
DEV_MESSAGE(KERN_ERR, device,
@@ -320,8 +172,7 @@ dasd_3990_erp_alternate_path(struct dasd_ccw_req * erp)
erp->irb.esw.esw0.sublog.lpum, opm);
/* post request with permanent error */
- if (erp->status > DASD_CQR_QUEUED)
- erp->status = DASD_CQR_FAILED;
+ erp->status = DASD_CQR_FAILED;
}
} /* end dasd_3990_erp_alternate_path */
@@ -344,14 +195,14 @@ static struct dasd_ccw_req *
dasd_3990_erp_DCTL(struct dasd_ccw_req * erp, char modifier)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
struct DCTL_data *DCTL_data;
struct ccw1 *ccw;
struct dasd_ccw_req *dctl_cqr;
dctl_cqr = dasd_alloc_erp_request((char *) &erp->magic, 1,
- sizeof (struct DCTL_data),
- erp->device);
+ sizeof(struct DCTL_data),
+ device);
if (IS_ERR(dctl_cqr)) {
DEV_MESSAGE(KERN_ERR, device, "%s",
"Unable to allocate DCTL-CQR");
@@ -365,13 +216,14 @@ dasd_3990_erp_DCTL(struct dasd_ccw_req * erp, char modifier)
DCTL_data->modifier = modifier;
ccw = dctl_cqr->cpaddr;
- memset(ccw, 0, sizeof (struct ccw1));
+ memset(ccw, 0, sizeof(struct ccw1));
ccw->cmd_code = CCW_CMD_DCTL;
ccw->count = 4;
ccw->cda = (__u32)(addr_t) DCTL_data;
dctl_cqr->function = dasd_3990_erp_DCTL;
dctl_cqr->refers = erp;
- dctl_cqr->device = erp->device;
+ dctl_cqr->startdev = device;
+ dctl_cqr->memdev = device;
dctl_cqr->magic = erp->magic;
dctl_cqr->expires = 5 * 60 * HZ;
dctl_cqr->retries = 2;
@@ -435,7 +287,7 @@ static struct dasd_ccw_req *
dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
/* first time set initial retry counter and erp_function */
/* and retry once without waiting for state change pending */
@@ -472,7 +324,7 @@ dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense)
"redriving request immediately, "
"%d retries left",
erp->retries);
- erp->status = DASD_CQR_QUEUED;
+ erp->status = DASD_CQR_FILLED;
}
}
@@ -530,7 +382,7 @@ static void
dasd_3990_handle_env_data(struct dasd_ccw_req * erp, char *sense)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
char msg_format = (sense[7] & 0xF0);
char msg_no = (sense[7] & 0x0F);
@@ -1157,7 +1009,7 @@ static struct dasd_ccw_req *
dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
erp->function = dasd_3990_erp_com_rej;
@@ -1198,7 +1050,7 @@ static struct dasd_ccw_req *
dasd_3990_erp_bus_out(struct dasd_ccw_req * erp)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
/* first time set initial retry counter and erp_function */
/* and retry once without blocking queue */
@@ -1237,7 +1089,7 @@ static struct dasd_ccw_req *
dasd_3990_erp_equip_check(struct dasd_ccw_req * erp, char *sense)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
erp->function = dasd_3990_erp_equip_check;
@@ -1279,7 +1131,6 @@ dasd_3990_erp_equip_check(struct dasd_ccw_req * erp, char *sense)
erp = dasd_3990_erp_action_5(erp);
}
-
return erp;
} /* end dasd_3990_erp_equip_check */
@@ -1299,7 +1150,7 @@ static struct dasd_ccw_req *
dasd_3990_erp_data_check(struct dasd_ccw_req * erp, char *sense)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
erp->function = dasd_3990_erp_data_check;
@@ -1358,7 +1209,7 @@ static struct dasd_ccw_req *
dasd_3990_erp_overrun(struct dasd_ccw_req * erp, char *sense)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
erp->function = dasd_3990_erp_overrun;
@@ -1387,7 +1238,7 @@ static struct dasd_ccw_req *
dasd_3990_erp_inv_format(struct dasd_ccw_req * erp, char *sense)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
erp->function = dasd_3990_erp_inv_format;
@@ -1403,8 +1254,7 @@ dasd_3990_erp_inv_format(struct dasd_ccw_req * erp, char *sense)
} else {
DEV_MESSAGE(KERN_ERR, device, "%s",
- "Invalid Track Format - Fatal error should have "
- "been handled within the interrupt handler");
+ "Invalid Track Format - Fatal error");
erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
}
@@ -1428,7 +1278,7 @@ static struct dasd_ccw_req *
dasd_3990_erp_EOC(struct dasd_ccw_req * default_erp, char *sense)
{
- struct dasd_device *device = default_erp->device;
+ struct dasd_device *device = default_erp->startdev;
DEV_MESSAGE(KERN_ERR, device, "%s",
"End-of-Cylinder - must never happen");
@@ -1453,7 +1303,7 @@ static struct dasd_ccw_req *
dasd_3990_erp_env_data(struct dasd_ccw_req * erp, char *sense)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
erp->function = dasd_3990_erp_env_data;
@@ -1463,11 +1313,9 @@ dasd_3990_erp_env_data(struct dasd_ccw_req * erp, char *sense)
/* don't retry on disabled interface */
if (sense[7] != 0x0F) {
-
erp = dasd_3990_erp_action_4(erp, sense);
} else {
-
- erp = dasd_3990_erp_cleanup(erp, DASD_CQR_IN_IO);
+ erp->status = DASD_CQR_FILLED;
}
return erp;
@@ -1490,11 +1338,10 @@ static struct dasd_ccw_req *
dasd_3990_erp_no_rec(struct dasd_ccw_req * default_erp, char *sense)
{
- struct dasd_device *device = default_erp->device;
+ struct dasd_device *device = default_erp->startdev;
DEV_MESSAGE(KERN_ERR, device, "%s",
- "No Record Found - Fatal error should "
- "have been handled within the interrupt handler");
+ "No Record Found - Fatal error ");
return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED);
@@ -1517,7 +1364,7 @@ static struct dasd_ccw_req *
dasd_3990_erp_file_prot(struct dasd_ccw_req * erp)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
DEV_MESSAGE(KERN_ERR, device, "%s", "File Protected");
@@ -1526,6 +1373,43 @@ dasd_3990_erp_file_prot(struct dasd_ccw_req * erp)
} /* end dasd_3990_erp_file_prot */
/*
+ * DASD_3990_ERP_INSPECT_ALIAS
+ *
+ * DESCRIPTION
+ * Checks if the original request was started on an alias device.
+ * If yes, it modifies the original and the erp request so that
+ * the erp request can be started on a base device.
+ *
+ * PARAMETER
+ * erp pointer to the currently created default ERP
+ *
+ * RETURN VALUES
+ * erp pointer to the modified ERP, or NULL
+ */
+
+static struct dasd_ccw_req *dasd_3990_erp_inspect_alias(
+ struct dasd_ccw_req *erp)
+{
+ struct dasd_ccw_req *cqr = erp->refers;
+
+ if (cqr->block &&
+ (cqr->block->base != cqr->startdev)) {
+ if (cqr->startdev->features & DASD_FEATURE_ERPLOG) {
+ DEV_MESSAGE(KERN_ERR, cqr->startdev,
+ "ERP on alias device for request %p,"
+ " recover on base device %s", cqr,
+ cqr->block->base->cdev->dev.bus_id);
+ }
+ dasd_eckd_reset_ccw_to_base_io(cqr);
+ erp->startdev = cqr->block->base;
+ erp->function = dasd_3990_erp_inspect_alias;
+ return erp;
+ } else
+ return NULL;
+}
+
+
+/*
* DASD_3990_ERP_INSPECT_24
*
* DESCRIPTION
@@ -1623,7 +1507,7 @@ static struct dasd_ccw_req *
dasd_3990_erp_action_10_32(struct dasd_ccw_req * erp, char *sense)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
erp->retries = 256;
erp->function = dasd_3990_erp_action_10_32;
@@ -1657,13 +1541,14 @@ static struct dasd_ccw_req *
dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense)
{
- struct dasd_device *device = default_erp->device;
+ struct dasd_device *device = default_erp->startdev;
__u32 cpa = 0;
struct dasd_ccw_req *cqr;
struct dasd_ccw_req *erp;
struct DE_eckd_data *DE_data;
+ struct PFX_eckd_data *PFX_data;
char *LO_data; /* LO_eckd_data_t */
- struct ccw1 *ccw;
+ struct ccw1 *ccw, *oldccw;
DEV_MESSAGE(KERN_DEBUG, device, "%s",
"Write not finished because of unexpected condition");
@@ -1702,8 +1587,8 @@ dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense)
/* Build new ERP request including DE/LO */
erp = dasd_alloc_erp_request((char *) &cqr->magic,
2 + 1,/* DE/LO + TIC */
- sizeof (struct DE_eckd_data) +
- sizeof (struct LO_eckd_data), device);
+ sizeof(struct DE_eckd_data) +
+ sizeof(struct LO_eckd_data), device);
if (IS_ERR(erp)) {
DEV_MESSAGE(KERN_ERR, device, "%s", "Unable to allocate ERP");
@@ -1712,10 +1597,16 @@ dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense)
/* use original DE */
DE_data = erp->data;
- memcpy(DE_data, cqr->data, sizeof (struct DE_eckd_data));
+ oldccw = cqr->cpaddr;
+ if (oldccw->cmd_code == DASD_ECKD_CCW_PFX) {
+ PFX_data = cqr->data;
+ memcpy(DE_data, &PFX_data->define_extend,
+ sizeof(struct DE_eckd_data));
+ } else
+ memcpy(DE_data, cqr->data, sizeof(struct DE_eckd_data));
/* create LO */
- LO_data = erp->data + sizeof (struct DE_eckd_data);
+ LO_data = erp->data + sizeof(struct DE_eckd_data);
if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) {
@@ -1748,7 +1639,7 @@ dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense)
/* create DE ccw */
ccw = erp->cpaddr;
- memset(ccw, 0, sizeof (struct ccw1));
+ memset(ccw, 0, sizeof(struct ccw1));
ccw->cmd_code = DASD_ECKD_CCW_DEFINE_EXTENT;
ccw->flags = CCW_FLAG_CC;
ccw->count = 16;
@@ -1756,7 +1647,7 @@ dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense)
/* create LO ccw */
ccw++;
- memset(ccw, 0, sizeof (struct ccw1));
+ memset(ccw, 0, sizeof(struct ccw1));
ccw->cmd_code = DASD_ECKD_CCW_LOCATE_RECORD;
ccw->flags = CCW_FLAG_CC;
ccw->count = 16;
@@ -1770,7 +1661,8 @@ dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense)
/* fill erp related fields */
erp->function = dasd_3990_erp_action_1B_32;
erp->refers = default_erp->refers;
- erp->device = device;
+ erp->startdev = device;
+ erp->memdev = device;
erp->magic = default_erp->magic;
erp->expires = 0;
erp->retries = 256;
@@ -1803,7 +1695,7 @@ static struct dasd_ccw_req *
dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense)
{
- struct dasd_device *device = previous_erp->device;
+ struct dasd_device *device = previous_erp->startdev;
__u32 cpa = 0;
struct dasd_ccw_req *cqr;
struct dasd_ccw_req *erp;
@@ -1827,7 +1719,7 @@ dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense)
DEV_MESSAGE(KERN_DEBUG, device, "%s",
"Imprecise ending is set - just retry");
- previous_erp->status = DASD_CQR_QUEUED;
+ previous_erp->status = DASD_CQR_FILLED;
return previous_erp;
}
@@ -1850,7 +1742,7 @@ dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense)
erp = previous_erp;
/* update the LO with the new returned sense data */
- LO_data = erp->data + sizeof (struct DE_eckd_data);
+ LO_data = erp->data + sizeof(struct DE_eckd_data);
if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) {
@@ -1889,7 +1781,7 @@ dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense)
ccw++; /* addr of TIC ccw */
ccw->cda = cpa;
- erp->status = DASD_CQR_QUEUED;
+ erp->status = DASD_CQR_FILLED;
return erp;
@@ -1968,9 +1860,7 @@ dasd_3990_erp_compound_path(struct dasd_ccw_req * erp, char *sense)
* try further actions. */
erp->lpm = 0;
-
- erp->status = DASD_CQR_ERROR;
-
+ erp->status = DASD_CQR_NEED_ERP;
}
}
@@ -2047,7 +1937,7 @@ dasd_3990_erp_compound_config(struct dasd_ccw_req * erp, char *sense)
if ((sense[25] & DASD_SENSE_BIT_1) && (sense[26] & DASD_SENSE_BIT_2)) {
/* set to suspended duplex state then restart */
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
DEV_MESSAGE(KERN_ERR, device, "%s",
"Set device to suspended duplex state should be "
@@ -2081,28 +1971,26 @@ dasd_3990_erp_compound(struct dasd_ccw_req * erp, char *sense)
{
if ((erp->function == dasd_3990_erp_compound_retry) &&
- (erp->status == DASD_CQR_ERROR)) {
+ (erp->status == DASD_CQR_NEED_ERP)) {
dasd_3990_erp_compound_path(erp, sense);
}
if ((erp->function == dasd_3990_erp_compound_path) &&
- (erp->status == DASD_CQR_ERROR)) {
+ (erp->status == DASD_CQR_NEED_ERP)) {
erp = dasd_3990_erp_compound_code(erp, sense);
}
if ((erp->function == dasd_3990_erp_compound_code) &&
- (erp->status == DASD_CQR_ERROR)) {
+ (erp->status == DASD_CQR_NEED_ERP)) {
dasd_3990_erp_compound_config(erp, sense);
}
/* if no compound action ERP specified, the request failed */
- if (erp->status == DASD_CQR_ERROR) {
-
+ if (erp->status == DASD_CQR_NEED_ERP)
erp->status = DASD_CQR_FAILED;
- }
return erp;
@@ -2127,7 +2015,7 @@ static struct dasd_ccw_req *
dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
erp->function = dasd_3990_erp_inspect_32;
@@ -2149,8 +2037,7 @@ dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense)
case 0x01: /* fatal error */
DEV_MESSAGE(KERN_ERR, device, "%s",
- "Fatal error should have been "
- "handled within the interrupt handler");
+ "Retry not recommended - Fatal error");
erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
break;
@@ -2253,6 +2140,11 @@ dasd_3990_erp_inspect(struct dasd_ccw_req * erp)
/* already set up new ERP ! */
char *sense = erp->refers->irb.ecw;
+ /* if this problem occured on an alias retry on base */
+ erp_new = dasd_3990_erp_inspect_alias(erp);
+ if (erp_new)
+ return erp_new;
+
/* distinguish between 24 and 32 byte sense data */
if (sense[27] & DASD_SENSE_BIT_0) {
@@ -2287,13 +2179,13 @@ static struct dasd_ccw_req *
dasd_3990_erp_add_erp(struct dasd_ccw_req * cqr)
{
- struct dasd_device *device = cqr->device;
+ struct dasd_device *device = cqr->startdev;
struct ccw1 *ccw;
/* allocate additional request block */
struct dasd_ccw_req *erp;
- erp = dasd_alloc_erp_request((char *) &cqr->magic, 2, 0, cqr->device);
+ erp = dasd_alloc_erp_request((char *) &cqr->magic, 2, 0, device);
if (IS_ERR(erp)) {
if (cqr->retries <= 0) {
DEV_MESSAGE(KERN_ERR, device, "%s",
@@ -2305,7 +2197,7 @@ dasd_3990_erp_add_erp(struct dasd_ccw_req * cqr)
"Unable to allocate ERP request "
"(%i retries left)",
cqr->retries);
- dasd_set_timer(device, (HZ << 3));
+ dasd_block_set_timer(device->block, (HZ << 3));
}
return cqr;
}
@@ -2319,7 +2211,9 @@ dasd_3990_erp_add_erp(struct dasd_ccw_req * cqr)
ccw->cda = (long)(cqr->cpaddr);
erp->function = dasd_3990_erp_add_erp;
erp->refers = cqr;
- erp->device = cqr->device;
+ erp->startdev = device;
+ erp->memdev = device;
+ erp->block = cqr->block;
erp->magic = cqr->magic;
erp->expires = 0;
erp->retries = 256;
@@ -2466,7 +2360,7 @@ static struct dasd_ccw_req *
dasd_3990_erp_further_erp(struct dasd_ccw_req *erp)
{
- struct dasd_device *device = erp->device;
+ struct dasd_device *device = erp->startdev;
char *sense = erp->irb.ecw;
/* check for 24 byte sense ERP */
@@ -2557,7 +2451,7 @@ dasd_3990_erp_handle_match_erp(struct dasd_ccw_req *erp_head,
struct dasd_ccw_req *erp)
{
- struct dasd_device *device = erp_head->device;
+ struct dasd_device *device = erp_head->startdev;
struct dasd_ccw_req *erp_done = erp_head; /* finished req */
struct dasd_ccw_req *erp_free = NULL; /* req to be freed */
@@ -2569,13 +2463,13 @@ dasd_3990_erp_handle_match_erp(struct dasd_ccw_req *erp_head,
"original request was lost\n");
/* remove the request from the device queue */
- list_del(&erp_done->list);
+ list_del(&erp_done->blocklist);
erp_free = erp_done;
erp_done = erp_done->refers;
/* free the finished erp request */
- dasd_free_erp_request(erp_free, erp_free->device);
+ dasd_free_erp_request(erp_free, erp_free->memdev);
} /* end while */
@@ -2603,7 +2497,7 @@ dasd_3990_erp_handle_match_erp(struct dasd_ccw_req *erp_head,
erp->retries, erp);
/* handle the request again... */
- erp->status = DASD_CQR_QUEUED;
+ erp->status = DASD_CQR_FILLED;
}
} else {
@@ -2620,7 +2514,7 @@ dasd_3990_erp_handle_match_erp(struct dasd_ccw_req *erp_head,
* DASD_3990_ERP_ACTION
*
* DESCRIPTION
- * controll routine for 3990 erp actions.
+ * control routine for 3990 erp actions.
* Has to be called with the queue lock (namely the s390_irq_lock) acquired.
*
* PARAMETER
@@ -2636,9 +2530,8 @@ dasd_3990_erp_handle_match_erp(struct dasd_ccw_req *erp_head,
struct dasd_ccw_req *
dasd_3990_erp_action(struct dasd_ccw_req * cqr)
{
-
struct dasd_ccw_req *erp = NULL;
- struct dasd_device *device = cqr->device;
+ struct dasd_device *device = cqr->startdev;
struct dasd_ccw_req *temp_erp = NULL;
if (device->features & DASD_FEATURE_ERPLOG) {
@@ -2704,10 +2597,11 @@ dasd_3990_erp_action(struct dasd_ccw_req * cqr)
}
}
- /* enqueue added ERP request */
- if (erp->status == DASD_CQR_FILLED) {
- erp->status = DASD_CQR_QUEUED;
- list_add(&erp->list, &device->ccw_queue);
+ /* enqueue ERP request if it's a new one */
+ if (list_empty(&erp->blocklist)) {
+ cqr->status = DASD_CQR_IN_ERP;
+ /* add erp request before the cqr */
+ list_add_tail(&erp->blocklist, &cqr->blocklist);
}
return erp;
diff --git a/drivers/s390/block/dasd_9336_erp.c b/drivers/s390/block/dasd_9336_erp.c
deleted file mode 100644
index 6e082688475..00000000000
--- a/drivers/s390/block/dasd_9336_erp.c
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * File...........: linux/drivers/s390/block/dasd_9336_erp.c
- * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
- * Bugreports.to..: <Linux390@de.ibm.com>
- * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2000
- *
- */
-
-#define PRINTK_HEADER "dasd_erp(9336)"
-
-#include "dasd_int.h"
-
-
-/*
- * DASD_9336_ERP_EXAMINE
- *
- * DESCRIPTION
- * Checks only for fatal/no/recover error.
- * A detailed examination of the sense data is done later outside
- * the interrupt handler.
- *
- * The logic is based on the 'IBM 3880 Storage Control Reference' manual
- * 'Chapter 7. 9336 Sense Data'.
- *
- * RETURN VALUES
- * dasd_era_none no error
- * dasd_era_fatal for all fatal (unrecoverable errors)
- * dasd_era_recover for all others.
- */
-dasd_era_t
-dasd_9336_erp_examine(struct dasd_ccw_req * cqr, struct irb * irb)
-{
- /* check for successful execution first */
- if (irb->scsw.cstat == 0x00 &&
- irb->scsw.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END))
- return dasd_era_none;
-
- /* examine the 24 byte sense data */
- return dasd_era_recover;
-
-} /* END dasd_9336_erp_examine */
diff --git a/drivers/s390/block/dasd_9343_erp.c b/drivers/s390/block/dasd_9343_erp.c
deleted file mode 100644
index ddecb9808ed..00000000000
--- a/drivers/s390/block/dasd_9343_erp.c
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * File...........: linux/drivers/s390/block/dasd_9345_erp.c
- * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
- * Bugreports.to..: <Linux390@de.ibm.com>
- * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2000
- *
- */
-
-#define PRINTK_HEADER "dasd_erp(9343)"
-
-#include "dasd_int.h"
-
-dasd_era_t
-dasd_9343_erp_examine(struct dasd_ccw_req * cqr, struct irb * irb)
-{
- if (irb->scsw.cstat == 0x00 &&
- irb->scsw.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END))
- return dasd_era_none;
-
- return dasd_era_recover;
-}
diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c
new file mode 100644
index 00000000000..3a40bee9d35
--- /dev/null
+++ b/drivers/s390/block/dasd_alias.c
@@ -0,0 +1,903 @@
+/*
+ * PAV alias management for the DASD ECKD discipline
+ *
+ * Copyright IBM Corporation, 2007
+ * Author(s): Stefan Weinhuber <wein@de.ibm.com>
+ */
+
+#include <linux/list.h>
+#include <asm/ebcdic.h>
+#include "dasd_int.h"
+#include "dasd_eckd.h"
+
+#ifdef PRINTK_HEADER
+#undef PRINTK_HEADER
+#endif /* PRINTK_HEADER */
+#define PRINTK_HEADER "dasd(eckd):"
+
+
+/*
+ * General concept of alias management:
+ * - PAV and DASD alias management is specific to the eckd discipline.
+ * - A device is connected to an lcu as long as the device exists.
+ * dasd_alias_make_device_known_to_lcu will be called wenn the
+ * device is checked by the eckd discipline and
+ * dasd_alias_disconnect_device_from_lcu will be called
+ * before the device is deleted.
+ * - The dasd_alias_add_device / dasd_alias_remove_device
+ * functions mark the point when a device is 'ready for service'.
+ * - A summary unit check is a rare occasion, but it is mandatory to
+ * support it. It requires some complex recovery actions before the
+ * devices can be used again (see dasd_alias_handle_summary_unit_check).
+ * - dasd_alias_get_start_dev will find an alias device that can be used
+ * instead of the base device and does some (very simple) load balancing.
+ * This is the function that gets called for each I/O, so when improving
+ * something, this function should get faster or better, the rest has just
+ * to be correct.
+ */
+
+
+static void summary_unit_check_handling_work(struct work_struct *);
+static void lcu_update_work(struct work_struct *);
+static int _schedule_lcu_update(struct alias_lcu *, struct dasd_device *);
+
+static struct alias_root aliastree = {
+ .serverlist = LIST_HEAD_INIT(aliastree.serverlist),
+ .lock = __SPIN_LOCK_UNLOCKED(aliastree.lock),
+};
+
+static struct alias_server *_find_server(struct dasd_uid *uid)
+{
+ struct alias_server *pos;
+ list_for_each_entry(pos, &aliastree.serverlist, server) {
+ if (!strncmp(pos->uid.vendor, uid->vendor,
+ sizeof(uid->vendor))
+ && !strncmp(pos->uid.serial, uid->serial,
+ sizeof(uid->serial)))
+ return pos;
+ };
+ return NULL;
+}
+
+static struct alias_lcu *_find_lcu(struct alias_server *server,
+ struct dasd_uid *uid)
+{
+ struct alias_lcu *pos;
+ list_for_each_entry(pos, &server->lculist, lcu) {
+ if (pos->uid.ssid == uid->ssid)
+ return pos;
+ };
+ return NULL;
+}
+
+static struct alias_pav_group *_find_group(struct alias_lcu *lcu,
+ struct dasd_uid *uid)
+{
+ struct alias_pav_group *pos;
+ __u8 search_unit_addr;
+
+ /* for hyper pav there is only one group */
+ if (lcu->pav == HYPER_PAV) {
+ if (list_empty(&lcu->grouplist))
+ return NULL;
+ else
+ return list_first_entry(&lcu->grouplist,
+ struct alias_pav_group, group);
+ }
+
+ /* for base pav we have to find the group that matches the base */
+ if (uid->type == UA_BASE_DEVICE)
+ search_unit_addr = uid->real_unit_addr;
+ else
+ search_unit_addr = uid->base_unit_addr;
+ list_for_each_entry(pos, &lcu->grouplist, group) {
+ if (pos->uid.base_unit_addr == search_unit_addr)
+ return pos;
+ };
+ return NULL;
+}
+
+static struct alias_server *_allocate_server(struct dasd_uid *uid)
+{
+ struct alias_server *server;
+
+ server = kzalloc(sizeof(*server), GFP_KERNEL);
+ if (!server)
+ return ERR_PTR(-ENOMEM);
+ memcpy(server->uid.vendor, uid->vendor, sizeof(uid->vendor));
+ memcpy(server->uid.serial, uid->serial, sizeof(uid->serial));
+ INIT_LIST_HEAD(&server->server);
+ INIT_LIST_HEAD(&server->lculist);
+ return server;
+}
+
+static void _free_server(struct alias_server *server)
+{
+ kfree(server);
+}
+
+static struct alias_lcu *_allocate_lcu(struct dasd_uid *uid)
+{
+ struct alias_lcu *lcu;
+
+ lcu = kzalloc(sizeof(*lcu), GFP_KERNEL);
+ if (!lcu)
+ return ERR_PTR(-ENOMEM);
+ lcu->uac = kzalloc(sizeof(*(lcu->uac)), GFP_KERNEL | GFP_DMA);
+ if (!lcu->uac)
+ goto out_err1;
+ lcu->rsu_cqr = kzalloc(sizeof(*lcu->rsu_cqr), GFP_KERNEL | GFP_DMA);
+ if (!lcu->rsu_cqr)
+ goto out_err2;
+ lcu->rsu_cqr->cpaddr = kzalloc(sizeof(struct ccw1),
+ GFP_KERNEL | GFP_DMA);
+ if (!lcu->rsu_cqr->cpaddr)
+ goto out_err3;
+ lcu->rsu_cqr->data = kzalloc(16, GFP_KERNEL | GFP_DMA);
+ if (!lcu->rsu_cqr->data)
+ goto out_err4;
+
+ memcpy(lcu->uid.vendor, uid->vendor, sizeof(uid->vendor));
+ memcpy(lcu->uid.serial, uid->serial, sizeof(uid->serial));
+ lcu->uid.ssid = uid->ssid;
+ lcu->pav = NO_PAV;
+ lcu->flags = NEED_UAC_UPDATE | UPDATE_PENDING;
+ INIT_LIST_HEAD(&lcu->lcu);
+ INIT_LIST_HEAD(&lcu->inactive_devices);
+ INIT_LIST_HEAD(&lcu->active_devices);
+ INIT_LIST_HEAD(&lcu->grouplist);
+ INIT_WORK(&lcu->suc_data.worker, summary_unit_check_handling_work);
+ INIT_DELAYED_WORK(&lcu->ruac_data.dwork, lcu_update_work);
+ spin_lock_init(&lcu->lock);
+ return lcu;
+
+out_err4:
+ kfree(lcu->rsu_cqr->cpaddr);
+out_err3:
+ kfree(lcu->rsu_cqr);
+out_err2:
+ kfree(lcu->uac);
+out_err1:
+ kfree(lcu);
+ return ERR_PTR(-ENOMEM);
+}
+
+static void _free_lcu(struct alias_lcu *lcu)
+{
+ kfree(lcu->rsu_cqr->data);
+ kfree(lcu->rsu_cqr->cpaddr);
+ kfree(lcu->rsu_cqr);
+ kfree(lcu->uac);
+ kfree(lcu);
+}
+
+/*
+ * This is the function that will allocate all the server and lcu data,
+ * so this function must be called first for a new device.
+ * If the return value is 1, the lcu was already known before, if it
+ * is 0, this is a new lcu.
+ * Negative return code indicates that something went wrong (e.g. -ENOMEM)
+ */
+int dasd_alias_make_device_known_to_lcu(struct dasd_device *device)
+{
+ struct dasd_eckd_private *private;
+ unsigned long flags;
+ struct alias_server *server, *newserver;
+ struct alias_lcu *lcu, *newlcu;
+ int is_lcu_known;
+ struct dasd_uid *uid;
+
+ private = (struct dasd_eckd_private *) device->private;
+ uid = &private->uid;
+ spin_lock_irqsave(&aliastree.lock, flags);
+ is_lcu_known = 1;
+ server = _find_server(uid);
+ if (!server) {
+ spin_unlock_irqrestore(&aliastree.lock, flags);
+ newserver = _allocate_server(uid);
+ if (IS_ERR(newserver))
+ return PTR_ERR(newserver);
+ spin_lock_irqsave(&aliastree.lock, flags);
+ server = _find_server(uid);
+ if (!server) {
+ list_add(&newserver->server, &aliastree.serverlist);
+ server = newserver;
+ is_lcu_known = 0;
+ } else {
+ /* someone was faster */
+ _free_server(newserver);
+ }
+ }
+
+ lcu = _find_lcu(server, uid);
+ if (!lcu) {
+ spin_unlock_irqrestore(&aliastree.lock, flags);
+ newlcu = _allocate_lcu(uid);
+ if (IS_ERR(newlcu))
+ return PTR_ERR(lcu);
+ spin_lock_irqsave(&aliastree.lock, flags);
+ lcu = _find_lcu(server, uid);
+ if (!lcu) {
+ list_add(&newlcu->lcu, &server->lculist);
+ lcu = newlcu;
+ is_lcu_known = 0;
+ } else {
+ /* someone was faster */
+ _free_lcu(newlcu);
+ }
+ is_lcu_known = 0;
+ }
+ spin_lock(&lcu->lock);
+ list_add(&device->alias_list, &lcu->inactive_devices);
+ private->lcu = lcu;
+ spin_unlock(&lcu->lock);
+ spin_unlock_irqrestore(&aliastree.lock, flags);
+
+ return is_lcu_known;
+}
+
+/*
+ * This function removes a device from the scope of alias management.
+ * The complicated part is to make sure that it is not in use by
+ * any of the workers. If necessary cancel the work.
+ */
+void dasd_alias_disconnect_device_from_lcu(struct dasd_device *device)
+{
+ struct dasd_eckd_private *private;
+ unsigned long flags;
+ struct alias_lcu *lcu;
+ struct alias_server *server;
+ int was_pending;
+
+ private = (struct dasd_eckd_private *) device->private;
+ lcu = private->lcu;
+ spin_lock_irqsave(&lcu->lock, flags);
+ list_del_init(&device->alias_list);
+ /* make sure that the workers don't use this device */
+ if (device == lcu->suc_data.device) {
+ spin_unlock_irqrestore(&lcu->lock, flags);
+ cancel_work_sync(&lcu->suc_data.worker);
+ spin_lock_irqsave(&lcu->lock, flags);
+ if (device == lcu->suc_data.device)
+ lcu->suc_data.device = NULL;
+ }
+ was_pending = 0;
+ if (device == lcu->ruac_data.device) {
+ spin_unlock_irqrestore(&lcu->lock, flags);
+ was_pending = 1;
+ cancel_delayed_work_sync(&lcu->ruac_data.dwork);
+ spin_lock_irqsave(&lcu->lock, flags);
+ if (device == lcu->ruac_data.device)
+ lcu->ruac_data.device = NULL;
+ }
+ private->lcu = NULL;
+ spin_unlock_irqrestore(&lcu->lock, flags);
+
+ spin_lock_irqsave(&aliastree.lock, flags);
+ spin_lock(&lcu->lock);
+ if (list_empty(&lcu->grouplist) &&
+ list_empty(&lcu->active_devices) &&
+ list_empty(&lcu->inactive_devices)) {
+ list_del(&lcu->lcu);
+ spin_unlock(&lcu->lock);
+ _free_lcu(lcu);
+ lcu = NULL;
+ } else {
+ if (was_pending)
+ _schedule_lcu_update(lcu, NULL);
+ spin_unlock(&lcu->lock);
+ }
+ server = _find_server(&private->uid);
+ if (server && list_empty(&server->lculist)) {
+ list_del(&server->server);
+ _free_server(server);
+ }
+ spin_unlock_irqrestore(&aliastree.lock, flags);
+}
+
+/*
+ * This function assumes that the unit address configuration stored
+ * in the lcu is up to date and will update the device uid before
+ * adding it to a pav group.
+ */
+static int _add_device_to_lcu(struct alias_lcu *lcu,
+ struct dasd_device *device)
+{
+
+ struct dasd_eckd_private *private;
+ struct alias_pav_group *group;
+ struct dasd_uid *uid;
+
+ private = (struct dasd_eckd_private *) device->private;
+ uid = &private->uid;
+ uid->type = lcu->uac->unit[uid->real_unit_addr].ua_type;
+ uid->base_unit_addr = lcu->uac->unit[uid->real_unit_addr].base_ua;
+ dasd_set_uid(device->cdev, &private->uid);
+
+ /* if we have no PAV anyway, we don't need to bother with PAV groups */
+ if (lcu->pav == NO_PAV) {
+ list_move(&device->alias_list, &lcu->active_devices);
+ return 0;
+ }
+
+ group = _find_group(lcu, uid);
+ if (!group) {
+ group = kzalloc(sizeof(*group), GFP_ATOMIC);
+ if (!group)
+ return -ENOMEM;
+ memcpy(group->uid.vendor, uid->vendor, sizeof(uid->vendor));
+ memcpy(group->uid.serial, uid->serial, sizeof(uid->serial));
+ group->uid.ssid = uid->ssid;
+ if (uid->type == UA_BASE_DEVICE)
+ group->uid.base_unit_addr = uid->real_unit_addr;
+ else
+ group->uid.base_unit_addr = uid->base_unit_addr;
+ INIT_LIST_HEAD(&group->group);
+ INIT_LIST_HEAD(&group->baselist);
+ INIT_LIST_HEAD(&group->aliaslist);
+ list_add(&group->group, &lcu->grouplist);
+ }
+ if (uid->type == UA_BASE_DEVICE)
+ list_move(&device->alias_list, &group->baselist);
+ else
+ list_move(&device->alias_list, &group->aliaslist);
+ private->pavgroup = group;
+ return 0;
+};
+
+static void _remove_device_from_lcu(struct alias_lcu *lcu,
+ struct dasd_device *device)
+{
+ struct dasd_eckd_private *private;
+ struct alias_pav_group *group;
+
+ private = (struct dasd_eckd_private *) device->private;
+ list_move(&device->alias_list, &lcu->inactive_devices);
+ group = private->pavgroup;
+ if (!group)
+ return;
+ private->pavgroup = NULL;
+ if (list_empty(&group->baselist) && list_empty(&group->aliaslist)) {
+ list_del(&group->group);
+ kfree(group);
+ return;
+ }
+ if (group->next == device)
+ group->next = NULL;
+};
+
+static int read_unit_address_configuration(struct dasd_device *device,
+ struct alias_lcu *lcu)
+{
+ struct dasd_psf_prssd_data *prssdp;
+ struct dasd_ccw_req *cqr;
+ struct ccw1 *ccw;
+ int rc;
+ unsigned long flags;
+
+ cqr = dasd_kmalloc_request("ECKD",
+ 1 /* PSF */ + 1 /* RSSD */ ,
+ (sizeof(struct dasd_psf_prssd_data)),
+ device);
+ if (IS_ERR(cqr))
+ return PTR_ERR(cqr);
+ cqr->startdev = device;
+ cqr->memdev = device;
+ clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
+ cqr->retries = 10;
+ cqr->expires = 20 * HZ;
+
+ /* Prepare for Read Subsystem Data */
+ prssdp = (struct dasd_psf_prssd_data *) cqr->data;
+ memset(prssdp, 0, sizeof(struct dasd_psf_prssd_data));
+ prssdp->order = PSF_ORDER_PRSSD;
+ prssdp->suborder = 0x0e; /* Read unit address configuration */
+ /* all other bytes of prssdp must be zero */
+
+ ccw = cqr->cpaddr;
+ ccw->cmd_code = DASD_ECKD_CCW_PSF;
+ ccw->count = sizeof(struct dasd_psf_prssd_data);
+ ccw->flags |= CCW_FLAG_CC;
+ ccw->cda = (__u32)(addr_t) prssdp;
+
+ /* Read Subsystem Data - feature codes */
+ memset(lcu->uac, 0, sizeof(*(lcu->uac)));
+
+ ccw++;
+ ccw->cmd_code = DASD_ECKD_CCW_RSSD;
+ ccw->count = sizeof(*(lcu->uac));
+ ccw->cda = (__u32)(addr_t) lcu->uac;
+
+ cqr->buildclk = get_clock();
+ cqr->status = DASD_CQR_FILLED;
+
+ /* need to unset flag here to detect race with summary unit check */
+ spin_lock_irqsave(&lcu->lock, flags);
+ lcu->flags &= ~NEED_UAC_UPDATE;
+ spin_unlock_irqrestore(&lcu->lock, flags);
+
+ do {
+ rc = dasd_sleep_on(cqr);
+ } while (rc && (cqr->retries > 0));
+ if (rc) {
+ spin_lock_irqsave(&lcu->lock, flags);
+ lcu->flags |= NEED_UAC_UPDATE;
+ spin_unlock_irqrestore(&lcu->lock, flags);
+ }
+ dasd_kfree_request(cqr, cqr->memdev);
+ return rc;
+}
+
+static int _lcu_update(struct dasd_device *refdev, struct alias_lcu *lcu)
+{
+ unsigned long flags;
+ struct alias_pav_group *pavgroup, *tempgroup;
+ struct dasd_device *device, *tempdev;
+ int i, rc;
+ struct dasd_eckd_private *private;
+
+ spin_lock_irqsave(&lcu->lock, flags);
+ list_for_each_entry_safe(pavgroup, tempgroup, &lcu->grouplist, group) {
+ list_for_each_entry_safe(device, tempdev, &pavgroup->baselist,
+ alias_list) {
+ list_move(&device->alias_list, &lcu->active_devices);
+ private = (struct dasd_eckd_private *) device->private;
+ private->pavgroup = NULL;
+ }
+ list_for_each_entry_safe(device, tempdev, &pavgroup->aliaslist,
+ alias_list) {
+ list_move(&device->alias_list, &lcu->active_devices);
+ private = (struct dasd_eckd_private *) device->private;
+ private->pavgroup = NULL;
+ }
+ list_del(&pavgroup->group);
+ kfree(pavgroup);
+ }
+ spin_unlock_irqrestore(&lcu->lock, flags);
+
+ rc = read_unit_address_configuration(refdev, lcu);
+ if (rc)
+ return rc;
+
+ spin_lock_irqsave(&lcu->lock, flags);
+ lcu->pav = NO_PAV;
+ for (i = 0; i < MAX_DEVICES_PER_LCU; ++i) {
+ switch (lcu->uac->unit[i].ua_type) {
+ case UA_BASE_PAV_ALIAS:
+ lcu->pav = BASE_PAV;
+ break;
+ case UA_HYPER_PAV_ALIAS:
+ lcu->pav = HYPER_PAV;
+ break;
+ }
+ if (lcu->pav != NO_PAV)
+ break;
+ }
+
+ list_for_each_entry_safe(device, tempdev, &lcu->active_devices,
+ alias_list) {
+ _add_device_to_lcu(lcu, device);
+ }
+ spin_unlock_irqrestore(&lcu->lock, flags);
+ return 0;
+}
+
+static void lcu_update_work(struct work_struct *work)
+{
+ struct alias_lcu *lcu;
+ struct read_uac_work_data *ruac_data;
+ struct dasd_device *device;
+ unsigned long flags;
+ int rc;
+
+ ruac_data = container_of(work, struct read_uac_work_data, dwork.work);
+ lcu = container_of(ruac_data, struct alias_lcu, ruac_data);
+ device = ruac_data->device;
+ rc = _lcu_update(device, lcu);
+ /*
+ * Need to check flags again, as there could have been another
+ * prepare_update or a new device a new device while we were still
+ * processing the data
+ */
+ spin_lock_irqsave(&lcu->lock, flags);
+ if (rc || (lcu->flags & NEED_UAC_UPDATE)) {
+ DEV_MESSAGE(KERN_WARNING, device, "could not update"
+ " alias data in lcu (rc = %d), retry later", rc);
+ schedule_delayed_work(&lcu->ruac_data.dwork, 30*HZ);
+ } else {
+ lcu->ruac_data.device = NULL;
+ lcu->flags &= ~UPDATE_PENDING;
+ }
+ spin_unlock_irqrestore(&lcu->lock, flags);
+}
+
+static int _schedule_lcu_update(struct alias_lcu *lcu,
+ struct dasd_device *device)
+{
+ struct dasd_device *usedev = NULL;
+ struct alias_pav_group *group;
+
+ lcu->flags |= NEED_UAC_UPDATE;
+ if (lcu->ruac_data.device) {
+ /* already scheduled or running */
+ return 0;
+ }
+ if (device && !list_empty(&device->alias_list))
+ usedev = device;
+
+ if (!usedev && !list_empty(&lcu->grouplist)) {
+ group = list_first_entry(&lcu->grouplist,
+ struct alias_pav_group, group);
+ if (!list_empty(&group->baselist))
+ usedev = list_first_entry(&group->baselist,
+ struct dasd_device,
+ alias_list);
+ else if (!list_empty(&group->aliaslist))
+ usedev = list_first_entry(&group->aliaslist,
+ struct dasd_device,
+ alias_list);
+ }
+ if (!usedev && !list_empty(&lcu->active_devices)) {
+ usedev = list_first_entry(&lcu->active_devices,
+ struct dasd_device, alias_list);
+ }
+ /*
+ * if we haven't found a proper device yet, give up for now, the next
+ * device that will be set active will trigger an lcu update
+ */
+ if (!usedev)
+ return -EINVAL;
+ lcu->ruac_data.device = usedev;
+ schedule_delayed_work(&lcu->ruac_data.dwork, 0);
+ return 0;
+}
+
+int dasd_alias_add_device(struct dasd_device *device)
+{
+ struct dasd_eckd_private *private;
+ struct alias_lcu *lcu;
+ unsigned long flags;
+ int rc;
+
+ private = (struct dasd_eckd_private *) device->private;
+ lcu = private->lcu;
+ rc = 0;
+ spin_lock_irqsave(&lcu->lock, flags);
+ if (!(lcu->flags & UPDATE_PENDING)) {
+ rc = _add_device_to_lcu(lcu, device);
+ if (rc)
+ lcu->flags |= UPDATE_PENDING;
+ }
+ if (lcu->flags & UPDATE_PENDING) {
+ list_move(&device->alias_list, &lcu->active_devices);
+ _schedule_lcu_update(lcu, device);
+ }
+ spin_unlock_irqrestore(&lcu->lock, flags);
+ return rc;
+}
+
+int dasd_alias_remove_device(struct dasd_device *device)
+{
+ struct dasd_eckd_private *private;
+ struct alias_lcu *lcu;
+ unsigned long flags;
+
+ private = (struct dasd_eckd_private *) device->private;
+ lcu = private->lcu;
+ spin_lock_irqsave(&lcu->lock, flags);
+ _remove_device_from_lcu(lcu, device);
+ spin_unlock_irqrestore(&lcu->lock, flags);
+ return 0;
+}
+
+struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *base_device)
+{
+
+ struct dasd_device *alias_device;
+ struct alias_pav_group *group;
+ struct alias_lcu *lcu;
+ struct dasd_eckd_private *private, *alias_priv;
+ unsigned long flags;
+
+ private = (struct dasd_eckd_private *) base_device->private;
+ group = private->pavgroup;
+ lcu = private->lcu;
+ if (!group || !lcu)
+ return NULL;
+ if (lcu->pav == NO_PAV ||
+ lcu->flags & (NEED_UAC_UPDATE | UPDATE_PENDING))
+ return NULL;
+
+ spin_lock_irqsave(&lcu->lock, flags);
+ alias_device = group->next;
+ if (!alias_device) {
+ if (list_empty(&group->aliaslist)) {
+ spin_unlock_irqrestore(&lcu->lock, flags);
+ return NULL;
+ } else {
+ alias_device = list_first_entry(&group->aliaslist,
+ struct dasd_device,
+ alias_list);
+ }
+ }
+ if (list_is_last(&alias_device->alias_list, &group->aliaslist))
+ group->next = list_first_entry(&group->aliaslist,
+ struct dasd_device, alias_list);
+ else
+ group->next = list_first_entry(&alias_device->alias_list,
+ struct dasd_device, alias_list);
+ spin_unlock_irqrestore(&lcu->lock, flags);
+ alias_priv = (struct dasd_eckd_private *) alias_device->private;
+ if ((alias_priv->count < private->count) && !alias_device->stopped)
+ return alias_device;
+ else
+ return NULL;
+}
+
+/*
+ * Summary unit check handling depends on the way alias devices
+ * are handled so it is done here rather then in dasd_eckd.c
+ */
+static int reset_summary_unit_check(struct alias_lcu *lcu,
+ struct dasd_device *device,
+ char reason)
+{
+ struct dasd_ccw_req *cqr;
+ int rc = 0;
+
+ cqr = lcu->rsu_cqr;
+ strncpy((char *) &cqr->magic, "ECKD", 4);
+ ASCEBC((char *) &cqr->magic, 4);
+ cqr->cpaddr->cmd_code = DASD_ECKD_CCW_RSCK;
+ cqr->cpaddr->flags = 0 ;
+ cqr->cpaddr->count = 16;
+ cqr->cpaddr->cda = (__u32)(addr_t) cqr->data;
+ ((char *)cqr->data)[0] = reason;
+
+ clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
+ cqr->retries = 255; /* set retry counter to enable basic ERP */
+ cqr->startdev = device;
+ cqr->memdev = device;
+ cqr->block = NULL;
+ cqr->expires = 5 * HZ;
+ cqr->buildclk = get_clock();
+ cqr->status = DASD_CQR_FILLED;
+
+ rc = dasd_sleep_on_immediatly(cqr);
+ return rc;
+}
+
+static void _restart_all_base_devices_on_lcu(struct alias_lcu *lcu)
+{
+ struct alias_pav_group *pavgroup;
+ struct dasd_device *device;
+ struct dasd_eckd_private *private;
+
+ /* active and inactive list can contain alias as well as base devices */
+ list_for_each_entry(device, &lcu->active_devices, alias_list) {
+ private = (struct dasd_eckd_private *) device->private;
+ if (private->uid.type != UA_BASE_DEVICE)
+ continue;
+ dasd_schedule_block_bh(device->block);
+ dasd_schedule_device_bh(device);
+ }
+ list_for_each_entry(device, &lcu->inactive_devices, alias_list) {
+ private = (struct dasd_eckd_private *) device->private;
+ if (private->uid.type != UA_BASE_DEVICE)
+ continue;
+ dasd_schedule_block_bh(device->block);
+ dasd_schedule_device_bh(device);
+ }
+ list_for_each_entry(pavgroup, &lcu->grouplist, group) {
+ list_for_each_entry(device, &pavgroup->baselist, alias_list) {
+ dasd_schedule_block_bh(device->block);
+ dasd_schedule_device_bh(device);
+ }
+ }
+}
+
+static void flush_all_alias_devices_on_lcu(struct alias_lcu *lcu)
+{
+ struct alias_pav_group *pavgroup;
+ struct dasd_device *device, *temp;
+ struct dasd_eckd_private *private;
+ int rc;
+ unsigned long flags;
+ LIST_HEAD(active);
+
+ /*
+ * Problem here ist that dasd_flush_device_queue may wait
+ * for termination of a request to complete. We can't keep
+ * the lcu lock during that time, so we must assume that
+ * the lists may have changed.
+ * Idea: first gather all active alias devices in a separate list,
+ * then flush the first element of this list unlocked, and afterwards
+ * check if it is still on the list before moving it to the
+ * active_devices list.
+ */
+
+ spin_lock_irqsave(&lcu->lock, flags);
+ list_for_each_entry_safe(device, temp, &lcu->active_devices,
+ alias_list) {
+ private = (struct dasd_eckd_private *) device->private;
+ if (private->uid.type == UA_BASE_DEVICE)
+ continue;
+ list_move(&device->alias_list, &active);
+ }
+
+ list_for_each_entry(pavgroup, &lcu->grouplist, group) {
+ list_splice_init(&pavgroup->aliaslist, &active);
+ }
+ while (!list_empty(&active)) {
+ device = list_first_entry(&active, struct dasd_device,
+ alias_list);
+ spin_unlock_irqrestore(&lcu->lock, flags);
+ rc = dasd_flush_device_queue(device);
+ spin_lock_irqsave(&lcu->lock, flags);
+ /*
+ * only move device around if it wasn't moved away while we
+ * were waiting for the flush
+ */
+ if (device == list_first_entry(&active,
+ struct dasd_device, alias_list))
+ list_move(&device->alias_list, &lcu->active_devices);
+ }
+ spin_unlock_irqrestore(&lcu->lock, flags);
+}
+
+/*
+ * This function is called in interrupt context, so the
+ * cdev lock for device is already locked!
+ */
+static void _stop_all_devices_on_lcu(struct alias_lcu *lcu,
+ struct dasd_device *device)
+{
+ struct alias_pav_group *pavgroup;
+ struct dasd_device *pos;
+
+ list_for_each_entry(pos, &lcu->active_devices, alias_list) {
+ if (pos != device)
+ spin_lock(get_ccwdev_lock(pos->cdev));
+ pos->stopped |= DASD_STOPPED_SU;
+ if (pos != device)
+ spin_unlock(get_ccwdev_lock(pos->cdev));
+ }
+ list_for_each_entry(pos, &lcu->inactive_devices, alias_list) {
+ if (pos != device)
+ spin_lock(get_ccwdev_lock(pos->cdev));
+ pos->stopped |= DASD_STOPPED_SU;
+ if (pos != device)
+ spin_unlock(get_ccwdev_lock(pos->cdev));
+ }
+ list_for_each_entry(pavgroup, &lcu->grouplist, group) {
+ list_for_each_entry(pos, &pavgroup->baselist, alias_list) {
+ if (pos != device)
+ spin_lock(get_ccwdev_lock(pos->cdev));
+ pos->stopped |= DASD_STOPPED_SU;
+ if (pos != device)
+ spin_unlock(get_ccwdev_lock(pos->cdev));
+ }
+ list_for_each_entry(pos, &pavgroup->aliaslist, alias_list) {
+ if (pos != device)
+ spin_lock(get_ccwdev_lock(pos->cdev));
+ pos->stopped |= DASD_STOPPED_SU;
+ if (pos != device)
+ spin_unlock(get_ccwdev_lock(pos->cdev));
+ }
+ }
+}
+
+static void _unstop_all_devices_on_lcu(struct alias_lcu *lcu)
+{
+ struct alias_pav_group *pavgroup;
+ struct dasd_device *device;
+ unsigned long flags;
+
+ list_for_each_entry(device, &lcu->active_devices, alias_list) {
+ spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
+ device->stopped &= ~DASD_STOPPED_SU;
+ spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
+ }
+
+ list_for_each_entry(device, &lcu->inactive_devices, alias_list) {
+ spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
+ device->stopped &= ~DASD_STOPPED_SU;
+ spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
+ }
+
+ list_for_each_entry(pavgroup, &lcu->grouplist, group) {
+ list_for_each_entry(device, &pavgroup->baselist, alias_list) {
+ spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
+ device->stopped &= ~DASD_STOPPED_SU;
+ spin_unlock_irqrestore(get_ccwdev_lock(device->cdev),
+ flags);
+ }
+ list_for_each_entry(device, &pavgroup->aliaslist, alias_list) {
+ spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
+ device->stopped &= ~DASD_STOPPED_SU;
+ spin_unlock_irqrestore(get_ccwdev_lock(device->cdev),
+ flags);
+ }
+ }
+}
+
+static void summary_unit_check_handling_work(struct work_struct *work)
+{
+ struct alias_lcu *lcu;
+ struct summary_unit_check_work_data *suc_data;
+ unsigned long flags;
+ struct dasd_device *device;
+
+ suc_data = container_of(work, struct summary_unit_check_work_data,
+ worker);
+ lcu = container_of(suc_data, struct alias_lcu, suc_data);
+ device = suc_data->device;
+
+ /* 1. flush alias devices */
+ flush_all_alias_devices_on_lcu(lcu);
+
+ /* 2. reset summary unit check */
+ spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
+ device->stopped &= ~(DASD_STOPPED_SU | DASD_STOPPED_PENDING);
+ spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
+ reset_summary_unit_check(lcu, device, suc_data->reason);
+
+ spin_lock_irqsave(&lcu->lock, flags);
+ _unstop_all_devices_on_lcu(lcu);
+ _restart_all_base_devices_on_lcu(lcu);
+ /* 3. read new alias configuration */
+ _schedule_lcu_update(lcu, device);
+ lcu->suc_data.device = NULL;
+ spin_unlock_irqrestore(&lcu->lock, flags);
+}
+
+/*
+ * note: this will be called from int handler context (cdev locked)
+ */
+void dasd_alias_handle_summary_unit_check(struct dasd_device *device,
+ struct irb *irb)
+{
+ struct alias_lcu *lcu;
+ char reason;
+ struct dasd_eckd_private *private;
+
+ private = (struct dasd_eckd_private *) device->private;
+
+ reason = irb->ecw[8];
+ DEV_MESSAGE(KERN_WARNING, device, "%s %x",
+ "eckd handle summary unit check: reason", reason);
+
+ lcu = private->lcu;
+ if (!lcu) {
+ DEV_MESSAGE(KERN_WARNING, device, "%s",
+ "device not ready to handle summary"
+ " unit check (no lcu structure)");
+ return;
+ }
+ spin_lock(&lcu->lock);
+ _stop_all_devices_on_lcu(lcu, device);
+ /* prepare for lcu_update */
+ private->lcu->flags |= NEED_UAC_UPDATE | UPDATE_PENDING;
+ /* If this device is about to be removed just return and wait for
+ * the next interrupt on a different device
+ */
+ if (list_empty(&device->alias_list)) {
+ DEV_MESSAGE(KERN_WARNING, device, "%s",
+ "device is in offline processing,"
+ " don't do summary unit check handling");
+ spin_unlock(&lcu->lock);
+ return;
+ }
+ if (lcu->suc_data.device) {
+ /* already scheduled or running */
+ DEV_MESSAGE(KERN_WARNING, device, "%s",
+ "previous instance of summary unit check worker"
+ " still pending");
+ spin_unlock(&lcu->lock);
+ return ;
+ }
+ lcu->suc_data.reason = reason;
+ lcu->suc_data.device = device;
+ spin_unlock(&lcu->lock);
+ schedule_work(&lcu->suc_data.worker);
+};
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index 0c67258fb9e..f4fb4025734 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -49,22 +49,6 @@ struct dasd_devmap {
};
/*
- * dasd_server_ssid_map contains a globally unique storage server subsystem ID.
- * dasd_server_ssid_list contains the list of all subsystem IDs accessed by
- * the DASD device driver.
- */
-struct dasd_server_ssid_map {
- struct list_head list;
- struct system_id {
- char vendor[4];
- char serial[15];
- __u16 ssid;
- } sid;
-};
-
-static struct list_head dasd_server_ssid_list;
-
-/*
* Parameter parsing functions for dasd= parameter. The syntax is:
* <devno> : (0x)?[0-9a-fA-F]+
* <busid> : [0-0a-f]\.[0-9a-f]\.(0x)?[0-9a-fA-F]+
@@ -721,8 +705,9 @@ dasd_ro_store(struct device *dev, struct device_attribute *attr,
devmap->features &= ~DASD_FEATURE_READONLY;
if (devmap->device)
devmap->device->features = devmap->features;
- if (devmap->device && devmap->device->gdp)
- set_disk_ro(devmap->device->gdp, val);
+ if (devmap->device && devmap->device->block
+ && devmap->device->block->gdp)
+ set_disk_ro(devmap->device->block->gdp, val);
spin_unlock(&dasd_devmap_lock);
return count;
}
@@ -893,12 +878,16 @@ dasd_alias_show(struct device *dev, struct device_attribute *attr, char *buf)
devmap = dasd_find_busid(dev->bus_id);
spin_lock(&dasd_devmap_lock);
- if (!IS_ERR(devmap))
- alias = devmap->uid.alias;
+ if (IS_ERR(devmap) || strlen(devmap->uid.vendor) == 0) {
+ spin_unlock(&dasd_devmap_lock);
+ return sprintf(buf, "0\n");
+ }
+ if (devmap->uid.type == UA_BASE_PAV_ALIAS ||
+ devmap->uid.type == UA_HYPER_PAV_ALIAS)
+ alias = 1;
else
alias = 0;
spin_unlock(&dasd_devmap_lock);
-
return sprintf(buf, alias ? "1\n" : "0\n");
}
@@ -930,19 +919,36 @@ static ssize_t
dasd_uid_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct dasd_devmap *devmap;
- char uid[UID_STRLEN];
+ char uid_string[UID_STRLEN];
+ char ua_string[3];
+ struct dasd_uid *uid;
devmap = dasd_find_busid(dev->bus_id);
spin_lock(&dasd_devmap_lock);
- if (!IS_ERR(devmap) && strlen(devmap->uid.vendor) > 0)
- snprintf(uid, sizeof(uid), "%s.%s.%04x.%02x",
- devmap->uid.vendor, devmap->uid.serial,
- devmap->uid.ssid, devmap->uid.unit_addr);
- else
- uid[0] = 0;
+ if (IS_ERR(devmap) || strlen(devmap->uid.vendor) == 0) {
+ spin_unlock(&dasd_devmap_lock);
+ return sprintf(buf, "\n");
+ }
+ uid = &devmap->uid;
+ switch (uid->type) {
+ case UA_BASE_DEVICE:
+ sprintf(ua_string, "%02x", uid->real_unit_addr);
+ break;
+ case UA_BASE_PAV_ALIAS:
+ sprintf(ua_string, "%02x", uid->base_unit_addr);
+ break;
+ case UA_HYPER_PAV_ALIAS:
+ sprintf(ua_string, "xx");
+ break;
+ default:
+ /* should not happen, treat like base device */
+ sprintf(ua_string, "%02x", uid->real_unit_addr);
+ break;
+ }
+ snprintf(uid_string, sizeof(uid_string), "%s.%s.%04x.%s",
+ uid->vendor, uid->serial, uid->ssid, ua_string);
spin_unlock(&dasd_devmap_lock);
-
- return snprintf(buf, PAGE_SIZE, "%s\n", uid);
+ return snprintf(buf, PAGE_SIZE, "%s\n", uid_string);
}
static DEVICE_ATTR(uid, 0444, dasd_uid_show, NULL);
@@ -1040,39 +1046,16 @@ int
dasd_set_uid(struct ccw_device *cdev, struct dasd_uid *uid)
{
struct dasd_devmap *devmap;
- struct dasd_server_ssid_map *srv, *tmp;
devmap = dasd_find_busid(cdev->dev.bus_id);
if (IS_ERR(devmap))
return PTR_ERR(devmap);
- /* generate entry for server_ssid_map */
- srv = (struct dasd_server_ssid_map *)
- kzalloc(sizeof(struct dasd_server_ssid_map), GFP_KERNEL);
- if (!srv)
- return -ENOMEM;
- strncpy(srv->sid.vendor, uid->vendor, sizeof(srv->sid.vendor) - 1);
- strncpy(srv->sid.serial, uid->serial, sizeof(srv->sid.serial) - 1);
- srv->sid.ssid = uid->ssid;
-
- /* server is already contained ? */
spin_lock(&dasd_devmap_lock);
devmap->uid = *uid;
- list_for_each_entry(tmp, &dasd_server_ssid_list, list) {
- if (!memcmp(&srv->sid, &tmp->sid,
- sizeof(struct system_id))) {
- kfree(srv);
- srv = NULL;
- break;
- }
- }
-
- /* add servermap to serverlist */
- if (srv)
- list_add(&srv->list, &dasd_server_ssid_list);
spin_unlock(&dasd_devmap_lock);
- return (srv ? 1 : 0);
+ return 0;
}
EXPORT_SYMBOL_GPL(dasd_set_uid);
@@ -1138,9 +1121,6 @@ dasd_devmap_init(void)
dasd_max_devindex = 0;
for (i = 0; i < 256; i++)
INIT_LIST_HEAD(&dasd_hashlists[i]);
-
- /* Initialize servermap structure. */
- INIT_LIST_HEAD(&dasd_server_ssid_list);
return 0;
}
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c
index 571320ab9e1..d91df38ee4f 100644
--- a/drivers/s390/block/dasd_diag.c
+++ b/drivers/s390/block/dasd_diag.c
@@ -142,7 +142,7 @@ dasd_diag_erp(struct dasd_device *device)
int rc;
mdsk_term_io(device);
- rc = mdsk_init_io(device, device->bp_block, 0, NULL);
+ rc = mdsk_init_io(device, device->block->bp_block, 0, NULL);
if (rc)
DEV_MESSAGE(KERN_WARNING, device, "DIAG ERP unsuccessful, "
"rc=%d", rc);
@@ -158,11 +158,11 @@ dasd_start_diag(struct dasd_ccw_req * cqr)
struct dasd_diag_req *dreq;
int rc;
- device = cqr->device;
+ device = cqr->startdev;
if (cqr->retries < 0) {
DEV_MESSAGE(KERN_WARNING, device, "DIAG start_IO: request %p "
"- no retry left)", cqr);
- cqr->status = DASD_CQR_FAILED;
+ cqr->status = DASD_CQR_ERROR;
return -EIO;
}
private = (struct dasd_diag_private *) device->private;
@@ -184,7 +184,7 @@ dasd_start_diag(struct dasd_ccw_req * cqr)
switch (rc) {
case 0: /* Synchronous I/O finished successfully */
cqr->stopclk = get_clock();
- cqr->status = DASD_CQR_DONE;
+ cqr->status = DASD_CQR_SUCCESS;
/* Indicate to calling function that only a dasd_schedule_bh()
and no timer is needed */
rc = -EACCES;
@@ -209,12 +209,12 @@ dasd_diag_term_IO(struct dasd_ccw_req * cqr)
{
struct dasd_device *device;
- device = cqr->device;
+ device = cqr->startdev;
mdsk_term_io(device);
- mdsk_init_io(device, device->bp_block, 0, NULL);
- cqr->status = DASD_CQR_CLEAR;
+ mdsk_init_io(device, device->block->bp_block, 0, NULL);
+ cqr->status = DASD_CQR_CLEAR_PENDING;
cqr->stopclk = get_clock();
- dasd_schedule_bh(device);
+ dasd_schedule_device_bh(device);
return 0;
}
@@ -247,7 +247,7 @@ dasd_ext_handler(__u16 code)
return;
}
cqr = (struct dasd_ccw_req *) ip;
- device = (struct dasd_device *) cqr->device;
+ device = (struct dasd_device *) cqr->startdev;
if (strncmp(device->discipline->ebcname, (char *) &cqr->magic, 4)) {
DEV_MESSAGE(KERN_WARNING, device,
" magic number of dasd_ccw_req 0x%08X doesn't"
@@ -260,10 +260,10 @@ dasd_ext_handler(__u16 code)
spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
/* Check for a pending clear operation */
- if (cqr->status == DASD_CQR_CLEAR) {
- cqr->status = DASD_CQR_QUEUED;
- dasd_clear_timer(device);
- dasd_schedule_bh(device);
+ if (cqr->status == DASD_CQR_CLEAR_PENDING) {
+ cqr->status = DASD_CQR_CLEARED;
+ dasd_device_clear_timer(device);
+ dasd_schedule_device_bh(device);
spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
return;
}
@@ -272,11 +272,11 @@ dasd_ext_handler(__u16 code)
expires = 0;
if (status == 0) {
- cqr->status = DASD_CQR_DONE;
+ cqr->status = DASD_CQR_SUCCESS;
/* Start first request on queue if possible -> fast_io. */
if (!list_empty(&device->ccw_queue)) {
next = list_entry(device->ccw_queue.next,
- struct dasd_ccw_req, list);
+ struct dasd_ccw_req, devlist);
if (next->status == DASD_CQR_QUEUED) {
rc = dasd_start_diag(next);
if (rc == 0)
@@ -296,10 +296,10 @@ dasd_ext_handler(__u16 code)
}
if (expires != 0)
- dasd_set_timer(device, expires);
+ dasd_device_set_timer(device, expires);
else
- dasd_clear_timer(device);
- dasd_schedule_bh(device);
+ dasd_device_clear_timer(device);
+ dasd_schedule_device_bh(device);
spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
}
@@ -309,6 +309,7 @@ dasd_ext_handler(__u16 code)
static int
dasd_diag_check_device(struct dasd_device *device)
{
+ struct dasd_block *block;
struct dasd_diag_private *private;
struct dasd_diag_characteristics *rdc_data;
struct dasd_diag_bio bio;
@@ -328,6 +329,16 @@ dasd_diag_check_device(struct dasd_device *device)
ccw_device_get_id(device->cdev, &private->dev_id);
device->private = (void *) private;
}
+ block = dasd_alloc_block();
+ if (IS_ERR(block)) {
+ DEV_MESSAGE(KERN_WARNING, device, "%s",
+ "could not allocate dasd block structure");
+ kfree(device->private);
+ return PTR_ERR(block);
+ }
+ device->block = block;
+ block->base = device;
+
/* Read Device Characteristics */
rdc_data = (void *) &(private->rdc_data);
rdc_data->dev_nr = private->dev_id.devno;
@@ -409,14 +420,14 @@ dasd_diag_check_device(struct dasd_device *device)
sizeof(DASD_DIAG_CMS1)) == 0) {
/* get formatted blocksize from label block */
bsize = (unsigned int) label->block_size;
- device->blocks = (unsigned long) label->block_count;
+ block->blocks = (unsigned long) label->block_count;
} else
- device->blocks = end_block;
- device->bp_block = bsize;
- device->s2b_shift = 0; /* bits to shift 512 to get a block */
+ block->blocks = end_block;
+ block->bp_block = bsize;
+ block->s2b_shift = 0; /* bits to shift 512 to get a block */
for (sb = 512; sb < bsize; sb = sb << 1)
- device->s2b_shift++;
- rc = mdsk_init_io(device, device->bp_block, 0, NULL);
+ block->s2b_shift++;
+ rc = mdsk_init_io(device, block->bp_block, 0, NULL);
if (rc) {
DEV_MESSAGE(KERN_WARNING, device, "DIAG initialization "
"failed (rc=%d)", rc);
@@ -424,9 +435,9 @@ dasd_diag_check_device(struct dasd_device *device)
} else {
DEV_MESSAGE(KERN_INFO, device,
"(%ld B/blk): %ldkB",
- (unsigned long) device->bp_block,
- (unsigned long) (device->blocks <<
- device->s2b_shift) >> 1);
+ (unsigned long) block->bp_block,
+ (unsigned long) (block->blocks <<
+ block->s2b_shift) >> 1);
}
out:
free_page((long) label);
@@ -436,22 +447,16 @@ out:
/* Fill in virtual disk geometry for device. Return zero on success, non-zero
* otherwise. */
static int
-dasd_diag_fill_geometry(struct dasd_device *device, struct hd_geometry *geo)
+dasd_diag_fill_geometry(struct dasd_block *block, struct hd_geometry *geo)
{
- if (dasd_check_blocksize(device->bp_block) != 0)
+ if (dasd_check_blocksize(block->bp_block) != 0)
return -EINVAL;
- geo->cylinders = (device->blocks << device->s2b_shift) >> 10;
+ geo->cylinders = (block->blocks << block->s2b_shift) >> 10;
geo->heads = 16;
- geo->sectors = 128 >> device->s2b_shift;
+ geo->sectors = 128 >> block->s2b_shift;
return 0;
}
-static dasd_era_t
-dasd_diag_examine_error(struct dasd_ccw_req * cqr, struct irb * stat)
-{
- return dasd_era_fatal;
-}
-
static dasd_erp_fn_t
dasd_diag_erp_action(struct dasd_ccw_req * cqr)
{
@@ -466,8 +471,9 @@ dasd_diag_erp_postaction(struct dasd_ccw_req * cqr)
/* Create DASD request from block device request. Return pointer to new
* request on success, ERR_PTR otherwise. */
-static struct dasd_ccw_req *
-dasd_diag_build_cp(struct dasd_device * device, struct request *req)
+static struct dasd_ccw_req *dasd_diag_build_cp(struct dasd_device *memdev,
+ struct dasd_block *block,
+ struct request *req)
{
struct dasd_ccw_req *cqr;
struct dasd_diag_req *dreq;
@@ -486,17 +492,17 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req)
rw_cmd = MDSK_WRITE_REQ;
else
return ERR_PTR(-EINVAL);
- blksize = device->bp_block;
+ blksize = block->bp_block;
/* Calculate record id of first and last block. */
- first_rec = req->sector >> device->s2b_shift;
- last_rec = (req->sector + req->nr_sectors - 1) >> device->s2b_shift;
+ first_rec = req->sector >> block->s2b_shift;
+ last_rec = (req->sector + req->nr_sectors - 1) >> block->s2b_shift;
/* Check struct bio and count the number of blocks for the request. */
count = 0;
rq_for_each_segment(bv, req, iter) {
if (bv->bv_len & (blksize - 1))
/* Fba can only do full blocks. */
return ERR_PTR(-EINVAL);
- count += bv->bv_len >> (device->s2b_shift + 9);
+ count += bv->bv_len >> (block->s2b_shift + 9);
}
/* Paranoia. */
if (count != last_rec - first_rec + 1)
@@ -505,7 +511,7 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req)
datasize = sizeof(struct dasd_diag_req) +
count*sizeof(struct dasd_diag_bio);
cqr = dasd_smalloc_request(dasd_diag_discipline.name, 0,
- datasize, device);
+ datasize, memdev);
if (IS_ERR(cqr))
return cqr;
@@ -529,7 +535,9 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req)
cqr->buildclk = get_clock();
if (req->cmd_flags & REQ_FAILFAST)
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
- cqr->device = device;
+ cqr->startdev = memdev;
+ cqr->memdev = memdev;
+ cqr->block = block;
cqr->expires = DIAG_TIMEOUT;
cqr->status = DASD_CQR_FILLED;
return cqr;
@@ -543,10 +551,15 @@ dasd_diag_free_cp(struct dasd_ccw_req *cqr, struct request *req)
int status;
status = cqr->status == DASD_CQR_DONE;
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
return status;
}
+static void dasd_diag_handle_terminated_request(struct dasd_ccw_req *cqr)
+{
+ cqr->status = DASD_CQR_FILLED;
+};
+
/* Fill in IOCTL data for device. */
static int
dasd_diag_fill_info(struct dasd_device * device,
@@ -583,7 +596,7 @@ static struct dasd_discipline dasd_diag_discipline = {
.fill_geometry = dasd_diag_fill_geometry,
.start_IO = dasd_start_diag,
.term_IO = dasd_diag_term_IO,
- .examine_error = dasd_diag_examine_error,
+ .handle_terminated_request = dasd_diag_handle_terminated_request,
.erp_action = dasd_diag_erp_action,
.erp_postaction = dasd_diag_erp_postaction,
.build_cp = dasd_diag_build_cp,
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 44adf8496bd..61f16937c1e 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -52,16 +52,6 @@ MODULE_LICENSE("GPL");
static struct dasd_discipline dasd_eckd_discipline;
-struct dasd_eckd_private {
- struct dasd_eckd_characteristics rdc_data;
- struct dasd_eckd_confdata conf_data;
- struct dasd_eckd_path path_data;
- struct eckd_count count_area[5];
- int init_cqr_status;
- int uses_cdl;
- struct attrib_data_t attrib; /* e.g. cache operations */
-};
-
/* The ccw bus type uses this table to find devices that it sends to
* dasd_eckd_probe */
static struct ccw_device_id dasd_eckd_ids[] = {
@@ -188,7 +178,7 @@ check_XRC (struct ccw1 *de_ccw,
if (rc == -ENOSYS || rc == -EACCES)
rc = 0;
- de_ccw->count = sizeof (struct DE_eckd_data);
+ de_ccw->count = sizeof(struct DE_eckd_data);
de_ccw->flags |= CCW_FLAG_SLI;
return rc;
}
@@ -208,7 +198,7 @@ define_extent(struct ccw1 * ccw, struct DE_eckd_data * data, int trk,
ccw->count = 16;
ccw->cda = (__u32) __pa(data);
- memset(data, 0, sizeof (struct DE_eckd_data));
+ memset(data, 0, sizeof(struct DE_eckd_data));
switch (cmd) {
case DASD_ECKD_CCW_READ_HOME_ADDRESS:
case DASD_ECKD_CCW_READ_RECORD_ZERO:
@@ -280,6 +270,132 @@ define_extent(struct ccw1 * ccw, struct DE_eckd_data * data, int trk,
return rc;
}
+static int check_XRC_on_prefix(struct PFX_eckd_data *pfxdata,
+ struct dasd_device *device)
+{
+ struct dasd_eckd_private *private;
+ int rc;
+
+ private = (struct dasd_eckd_private *) device->private;
+ if (!private->rdc_data.facilities.XRC_supported)
+ return 0;
+
+ /* switch on System Time Stamp - needed for XRC Support */
+ pfxdata->define_extend.ga_extended |= 0x08; /* 'Time Stamp Valid' */
+ pfxdata->define_extend.ga_extended |= 0x02; /* 'Extended Parameter' */
+ pfxdata->validity.time_stamp = 1; /* 'Time Stamp Valid' */
+
+ rc = get_sync_clock(&pfxdata->define_extend.ep_sys_time);
+ /* Ignore return code if sync clock is switched off. */
+ if (rc == -ENOSYS || rc == -EACCES)
+ rc = 0;
+ return rc;
+}
+
+static int prefix(struct ccw1 *ccw, struct PFX_eckd_data *pfxdata, int trk,
+ int totrk, int cmd, struct dasd_device *basedev,
+ struct dasd_device *startdev)
+{
+ struct dasd_eckd_private *basepriv, *startpriv;
+ struct DE_eckd_data *data;
+ struct ch_t geo, beg, end;
+ int rc = 0;
+
+ basepriv = (struct dasd_eckd_private *) basedev->private;
+ startpriv = (struct dasd_eckd_private *) startdev->private;
+ data = &pfxdata->define_extend;
+
+ ccw->cmd_code = DASD_ECKD_CCW_PFX;
+ ccw->flags = 0;
+ ccw->count = sizeof(*pfxdata);
+ ccw->cda = (__u32) __pa(pfxdata);
+
+ memset(pfxdata, 0, sizeof(*pfxdata));
+ /* prefix data */
+ pfxdata->format = 0;
+ pfxdata->base_address = basepriv->conf_data.ned1.unit_addr;
+ pfxdata->base_lss = basepriv->conf_data.ned1.ID;
+ pfxdata->validity.define_extend = 1;
+
+ /* private uid is kept up to date, conf_data may be outdated */
+ if (startpriv->uid.type != UA_BASE_DEVICE) {
+ pfxdata->validity.verify_base = 1;
+ if (startpriv->uid.type == UA_HYPER_PAV_ALIAS)
+ pfxdata->validity.hyper_pav = 1;
+ }
+
+ /* define extend data (mostly)*/
+ switch (cmd) {
+ case DASD_ECKD_CCW_READ_HOME_ADDRESS:
+ case DASD_ECKD_CCW_READ_RECORD_ZERO:
+ case DASD_ECKD_CCW_READ:
+ case DASD_ECKD_CCW_READ_MT:
+ case DASD_ECKD_CCW_READ_CKD:
+ case DASD_ECKD_CCW_READ_CKD_MT:
+ case DASD_ECKD_CCW_READ_KD:
+ case DASD_ECKD_CCW_READ_KD_MT:
+ case DASD_ECKD_CCW_READ_COUNT:
+ data->mask.perm = 0x1;
+ data->attributes.operation = basepriv->attrib.operation;
+ break;
+ case DASD_ECKD_CCW_WRITE:
+ case DASD_ECKD_CCW_WRITE_MT:
+ case DASD_ECKD_CCW_WRITE_KD:
+ case DASD_ECKD_CCW_WRITE_KD_MT:
+ data->mask.perm = 0x02;
+ data->attributes.operation = basepriv->attrib.operation;
+ rc = check_XRC_on_prefix(pfxdata, basedev);
+ break;
+ case DASD_ECKD_CCW_WRITE_CKD:
+ case DASD_ECKD_CCW_WRITE_CKD_MT:
+ data->attributes.operation = DASD_BYPASS_CACHE;
+ rc = check_XRC_on_prefix(pfxdata, basedev);
+ break;
+ case DASD_ECKD_CCW_ERASE:
+ case DASD_ECKD_CCW_WRITE_HOME_ADDRESS:
+ case DASD_ECKD_CCW_WRITE_RECORD_ZERO:
+ data->mask.perm = 0x3;
+ data->mask.auth = 0x1;
+ data->attributes.operation = DASD_BYPASS_CACHE;
+ rc = check_XRC_on_prefix(pfxdata, basedev);
+ break;
+ default:
+ DEV_MESSAGE(KERN_ERR, basedev, "unknown opcode 0x%x", cmd);
+ break;
+ }
+
+ data->attributes.mode = 0x3; /* ECKD */
+
+ if ((basepriv->rdc_data.cu_type == 0x2105 ||
+ basepriv->rdc_data.cu_type == 0x2107 ||
+ basepriv->rdc_data.cu_type == 0x1750)
+ && !(basepriv->uses_cdl && trk < 2))
+ data->ga_extended |= 0x40; /* Regular Data Format Mode */
+
+ geo.cyl = basepriv->rdc_data.no_cyl;
+ geo.head = basepriv->rdc_data.trk_per_cyl;
+ beg.cyl = trk / geo.head;
+ beg.head = trk % geo.head;
+ end.cyl = totrk / geo.head;
+ end.head = totrk % geo.head;
+
+ /* check for sequential prestage - enhance cylinder range */
+ if (data->attributes.operation == DASD_SEQ_PRESTAGE ||
+ data->attributes.operation == DASD_SEQ_ACCESS) {
+
+ if (end.cyl + basepriv->attrib.nr_cyl < geo.cyl)
+ end.cyl += basepriv->attrib.nr_cyl;
+ else
+ end.cyl = (geo.cyl - 1);
+ }
+
+ data->beg_ext.cyl = beg.cyl;
+ data->beg_ext.head = beg.head;
+ data->end_ext.cyl = end.cyl;
+ data->end_ext.head = end.head;
+ return rc;
+}
+
static void
locate_record(struct ccw1 *ccw, struct LO_eckd_data *data, int trk,
int rec_on_trk, int no_rec, int cmd,
@@ -300,7 +416,7 @@ locate_record(struct ccw1 *ccw, struct LO_eckd_data *data, int trk,
ccw->count = 16;
ccw->cda = (__u32) __pa(data);
- memset(data, 0, sizeof (struct LO_eckd_data));
+ memset(data, 0, sizeof(struct LO_eckd_data));
sector = 0;
if (rec_on_trk) {
switch (private->rdc_data.dev_type) {
@@ -441,12 +557,15 @@ dasd_eckd_generate_uid(struct dasd_device *device, struct dasd_uid *uid)
sizeof(uid->serial) - 1);
EBCASC(uid->serial, sizeof(uid->serial) - 1);
uid->ssid = confdata->neq.subsystemID;
- if (confdata->ned2.sneq.flags == 0x40) {
- uid->alias = 1;
- uid->unit_addr = confdata->ned2.sneq.base_unit_addr;
- } else
- uid->unit_addr = confdata->ned1.unit_addr;
-
+ uid->real_unit_addr = confdata->ned1.unit_addr;
+ if (confdata->ned2.sneq.flags == 0x40 &&
+ confdata->ned2.sneq.format == 0x0001) {
+ uid->type = confdata->ned2.sneq.sua_flags;
+ if (uid->type == UA_BASE_PAV_ALIAS)
+ uid->base_unit_addr = confdata->ned2.sneq.base_unit_addr;
+ } else {
+ uid->type = UA_BASE_DEVICE;
+ }
return 0;
}
@@ -470,7 +589,9 @@ static struct dasd_ccw_req *dasd_eckd_build_rcd_lpm(struct dasd_device *device,
ccw->cda = (__u32)(addr_t)rcd_buffer;
ccw->count = ciw->count;
- cqr->device = device;
+ cqr->startdev = device;
+ cqr->memdev = device;
+ cqr->block = NULL;
cqr->expires = 10*HZ;
cqr->lpm = lpm;
clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
@@ -511,7 +632,7 @@ static int dasd_eckd_read_conf_lpm(struct dasd_device *device,
/*
* on success we update the user input parms
*/
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
if (ret)
goto out_error;
@@ -557,19 +678,19 @@ dasd_eckd_read_conf(struct dasd_device *device)
"data retrieved");
continue; /* no error */
}
- if (conf_len != sizeof (struct dasd_eckd_confdata)) {
+ if (conf_len != sizeof(struct dasd_eckd_confdata)) {
MESSAGE(KERN_WARNING,
"sizes of configuration data mismatch"
"%d (read) vs %ld (expected)",
conf_len,
- sizeof (struct dasd_eckd_confdata));
+ sizeof(struct dasd_eckd_confdata));
kfree(conf_data);
continue; /* no error */
}
/* save first valid configuration data */
if (!conf_data_saved){
memcpy(&private->conf_data, conf_data,
- sizeof (struct dasd_eckd_confdata));
+ sizeof(struct dasd_eckd_confdata));
conf_data_saved++;
}
switch (((char *)conf_data)[242] & 0x07){
@@ -586,39 +707,104 @@ dasd_eckd_read_conf(struct dasd_device *device)
return 0;
}
+static int dasd_eckd_read_features(struct dasd_device *device)
+{
+ struct dasd_psf_prssd_data *prssdp;
+ struct dasd_rssd_features *features;
+ struct dasd_ccw_req *cqr;
+ struct ccw1 *ccw;
+ int rc;
+ struct dasd_eckd_private *private;
+
+ private = (struct dasd_eckd_private *) device->private;
+ cqr = dasd_smalloc_request(dasd_eckd_discipline.name,
+ 1 /* PSF */ + 1 /* RSSD */ ,
+ (sizeof(struct dasd_psf_prssd_data) +
+ sizeof(struct dasd_rssd_features)),
+ device);
+ if (IS_ERR(cqr)) {
+ DEV_MESSAGE(KERN_WARNING, device, "%s",
+ "Could not allocate initialization request");
+ return PTR_ERR(cqr);
+ }
+ cqr->startdev = device;
+ cqr->memdev = device;
+ cqr->block = NULL;
+ clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
+ cqr->retries = 5;
+ cqr->expires = 10 * HZ;
+
+ /* Prepare for Read Subsystem Data */
+ prssdp = (struct dasd_psf_prssd_data *) cqr->data;
+ memset(prssdp, 0, sizeof(struct dasd_psf_prssd_data));
+ prssdp->order = PSF_ORDER_PRSSD;
+ prssdp->suborder = 0x41; /* Read Feature Codes */
+ /* all other bytes of prssdp must be zero */
+
+ ccw = cqr->cpaddr;
+ ccw->cmd_code = DASD_ECKD_CCW_PSF;
+ ccw->count = sizeof(struct dasd_psf_prssd_data);
+ ccw->flags |= CCW_FLAG_CC;
+ ccw->cda = (__u32)(addr_t) prssdp;
+
+ /* Read Subsystem Data - feature codes */
+ features = (struct dasd_rssd_features *) (prssdp + 1);
+ memset(features, 0, sizeof(struct dasd_rssd_features));
+
+ ccw++;
+ ccw->cmd_code = DASD_ECKD_CCW_RSSD;
+ ccw->count = sizeof(struct dasd_rssd_features);
+ ccw->cda = (__u32)(addr_t) features;
+
+ cqr->buildclk = get_clock();
+ cqr->status = DASD_CQR_FILLED;
+ rc = dasd_sleep_on(cqr);
+ if (rc == 0) {
+ prssdp = (struct dasd_psf_prssd_data *) cqr->data;
+ features = (struct dasd_rssd_features *) (prssdp + 1);
+ memcpy(&private->features, features,
+ sizeof(struct dasd_rssd_features));
+ }
+ dasd_sfree_request(cqr, cqr->memdev);
+ return rc;
+}
+
+
/*
* Build CP for Perform Subsystem Function - SSC.
*/
-static struct dasd_ccw_req *
-dasd_eckd_build_psf_ssc(struct dasd_device *device)
+static struct dasd_ccw_req *dasd_eckd_build_psf_ssc(struct dasd_device *device)
{
- struct dasd_ccw_req *cqr;
- struct dasd_psf_ssc_data *psf_ssc_data;
- struct ccw1 *ccw;
+ struct dasd_ccw_req *cqr;
+ struct dasd_psf_ssc_data *psf_ssc_data;
+ struct ccw1 *ccw;
- cqr = dasd_smalloc_request("ECKD", 1 /* PSF */ ,
+ cqr = dasd_smalloc_request("ECKD", 1 /* PSF */ ,
sizeof(struct dasd_psf_ssc_data),
device);
- if (IS_ERR(cqr)) {
- DEV_MESSAGE(KERN_WARNING, device, "%s",
+ if (IS_ERR(cqr)) {
+ DEV_MESSAGE(KERN_WARNING, device, "%s",
"Could not allocate PSF-SSC request");
- return cqr;
- }
- psf_ssc_data = (struct dasd_psf_ssc_data *)cqr->data;
- psf_ssc_data->order = PSF_ORDER_SSC;
- psf_ssc_data->suborder = 0x08;
-
- ccw = cqr->cpaddr;
- ccw->cmd_code = DASD_ECKD_CCW_PSF;
- ccw->cda = (__u32)(addr_t)psf_ssc_data;
- ccw->count = 66;
-
- cqr->device = device;
- cqr->expires = 10*HZ;
- cqr->buildclk = get_clock();
- cqr->status = DASD_CQR_FILLED;
- return cqr;
+ return cqr;
+ }
+ psf_ssc_data = (struct dasd_psf_ssc_data *)cqr->data;
+ psf_ssc_data->order = PSF_ORDER_SSC;
+ psf_ssc_data->suborder = 0x88;
+ psf_ssc_data->reserved[0] = 0x88;
+
+ ccw = cqr->cpaddr;
+ ccw->cmd_code = DASD_ECKD_CCW_PSF;
+ ccw->cda = (__u32)(addr_t)psf_ssc_data;
+ ccw->count = 66;
+
+ cqr->startdev = device;
+ cqr->memdev = device;
+ cqr->block = NULL;
+ cqr->expires = 10*HZ;
+ cqr->buildclk = get_clock();
+ cqr->status = DASD_CQR_FILLED;
+ return cqr;
}
/*
@@ -629,28 +815,28 @@ dasd_eckd_build_psf_ssc(struct dasd_device *device)
static int
dasd_eckd_psf_ssc(struct dasd_device *device)
{
- struct dasd_ccw_req *cqr;
- int rc;
-
- cqr = dasd_eckd_build_psf_ssc(device);
- if (IS_ERR(cqr))
- return PTR_ERR(cqr);
-
- rc = dasd_sleep_on(cqr);
- if (!rc)
- /* trigger CIO to reprobe devices */
- css_schedule_reprobe();
- dasd_sfree_request(cqr, cqr->device);
- return rc;
+ struct dasd_ccw_req *cqr;
+ int rc;
+
+ cqr = dasd_eckd_build_psf_ssc(device);
+ if (IS_ERR(cqr))
+ return PTR_ERR(cqr);
+
+ rc = dasd_sleep_on(cqr);
+ if (!rc)
+ /* trigger CIO to reprobe devices */
+ css_schedule_reprobe();
+ dasd_sfree_request(cqr, cqr->memdev);
+ return rc;
}
/*
* Valide storage server of current device.
*/
-static int
-dasd_eckd_validate_server(struct dasd_device *device, struct dasd_uid *uid)
+static int dasd_eckd_validate_server(struct dasd_device *device)
{
int rc;
+ struct dasd_eckd_private *private;
/* Currently PAV is the only reason to 'validate' server on LPAR */
if (dasd_nopav || MACHINE_IS_VM)
@@ -659,9 +845,11 @@ dasd_eckd_validate_server(struct dasd_device *device, struct dasd_uid *uid)
rc = dasd_eckd_psf_ssc(device);
/* may be requested feature is not available on server,
* therefore just report error and go ahead */
+ private = (struct dasd_eckd_private *) device->private;
DEV_MESSAGE(KERN_INFO, device,
"PSF-SSC on storage subsystem %s.%s.%04x returned rc=%d",
- uid->vendor, uid->serial, uid->ssid, rc);
+ private->uid.vendor, private->uid.serial,
+ private->uid.ssid, rc);
/* RE-Read Configuration Data */
return dasd_eckd_read_conf(device);
}
@@ -674,9 +862,9 @@ static int
dasd_eckd_check_characteristics(struct dasd_device *device)
{
struct dasd_eckd_private *private;
- struct dasd_uid uid;
+ struct dasd_block *block;
void *rdc_data;
- int rc;
+ int is_known, rc;
private = (struct dasd_eckd_private *) device->private;
if (private == NULL) {
@@ -699,27 +887,54 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
/* Read Configuration Data */
rc = dasd_eckd_read_conf(device);
if (rc)
- return rc;
+ goto out_err1;
/* Generate device unique id and register in devmap */
- rc = dasd_eckd_generate_uid(device, &uid);
+ rc = dasd_eckd_generate_uid(device, &private->uid);
if (rc)
- return rc;
- rc = dasd_set_uid(device->cdev, &uid);
- if (rc == 1) /* new server found */
- rc = dasd_eckd_validate_server(device, &uid);
+ goto out_err1;
+ dasd_set_uid(device->cdev, &private->uid);
+
+ if (private->uid.type == UA_BASE_DEVICE) {
+ block = dasd_alloc_block();
+ if (IS_ERR(block)) {
+ DEV_MESSAGE(KERN_WARNING, device, "%s",
+ "could not allocate dasd block structure");
+ rc = PTR_ERR(block);
+ goto out_err1;
+ }
+ device->block = block;
+ block->base = device;
+ }
+
+ /* register lcu with alias handling, enable PAV if this is a new lcu */
+ is_known = dasd_alias_make_device_known_to_lcu(device);
+ if (is_known < 0) {
+ rc = is_known;
+ goto out_err2;
+ }
+ if (!is_known) {
+ /* new lcu found */
+ rc = dasd_eckd_validate_server(device); /* will switch pav on */
+ if (rc)
+ goto out_err3;
+ }
+
+ /* Read Feature Codes */
+ rc = dasd_eckd_read_features(device);
if (rc)
- return rc;
+ goto out_err3;
/* Read Device Characteristics */
rdc_data = (void *) &(private->rdc_data);
memset(rdc_data, 0, sizeof(rdc_data));
rc = dasd_generic_read_dev_chars(device, "ECKD", &rdc_data, 64);
- if (rc)
+ if (rc) {
DEV_MESSAGE(KERN_WARNING, device,
"Read device characteristics returned "
"rc=%d", rc);
-
+ goto out_err3;
+ }
DEV_MESSAGE(KERN_INFO, device,
"%04X/%02X(CU:%04X/%02X) Cyl:%d Head:%d Sec:%d",
private->rdc_data.dev_type,
@@ -729,9 +944,24 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
private->rdc_data.no_cyl,
private->rdc_data.trk_per_cyl,
private->rdc_data.sec_per_trk);
+ return 0;
+
+out_err3:
+ dasd_alias_disconnect_device_from_lcu(device);
+out_err2:
+ dasd_free_block(device->block);
+ device->block = NULL;
+out_err1:
+ kfree(device->private);
+ device->private = NULL;
return rc;
}
+static void dasd_eckd_uncheck_device(struct dasd_device *device)
+{
+ dasd_alias_disconnect_device_from_lcu(device);
+}
+
static struct dasd_ccw_req *
dasd_eckd_analysis_ccw(struct dasd_device *device)
{
@@ -755,7 +985,7 @@ dasd_eckd_analysis_ccw(struct dasd_device *device)
/* Define extent for the first 3 tracks. */
define_extent(ccw++, cqr->data, 0, 2,
DASD_ECKD_CCW_READ_COUNT, device);
- LO_data = cqr->data + sizeof (struct DE_eckd_data);
+ LO_data = cqr->data + sizeof(struct DE_eckd_data);
/* Locate record for the first 4 records on track 0. */
ccw[-1].flags |= CCW_FLAG_CC;
locate_record(ccw++, LO_data++, 0, 0, 4,
@@ -783,7 +1013,9 @@ dasd_eckd_analysis_ccw(struct dasd_device *device)
ccw->count = 8;
ccw->cda = (__u32)(addr_t) count_data;
- cqr->device = device;
+ cqr->block = NULL;
+ cqr->startdev = device;
+ cqr->memdev = device;
cqr->retries = 0;
cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
@@ -803,7 +1035,7 @@ dasd_eckd_analysis_callback(struct dasd_ccw_req *init_cqr, void *data)
struct dasd_eckd_private *private;
struct dasd_device *device;
- device = init_cqr->device;
+ device = init_cqr->startdev;
private = (struct dasd_eckd_private *) device->private;
private->init_cqr_status = init_cqr->status;
dasd_sfree_request(init_cqr, device);
@@ -811,13 +1043,13 @@ dasd_eckd_analysis_callback(struct dasd_ccw_req *init_cqr, void *data)
}
static int
-dasd_eckd_start_analysis(struct dasd_device *device)
+dasd_eckd_start_analysis(struct dasd_block *block)
{
struct dasd_eckd_private *private;
struct dasd_ccw_req *init_cqr;
- private = (struct dasd_eckd_private *) device->private;
- init_cqr = dasd_eckd_analysis_ccw(device);
+ private = (struct dasd_eckd_private *) block->base->private;
+ init_cqr = dasd_eckd_analysis_ccw(block->base);
if (IS_ERR(init_cqr))
return PTR_ERR(init_cqr);
init_cqr->callback = dasd_eckd_analysis_callback;
@@ -828,13 +1060,15 @@ dasd_eckd_start_analysis(struct dasd_device *device)
}
static int
-dasd_eckd_end_analysis(struct dasd_device *device)
+dasd_eckd_end_analysis(struct dasd_block *block)
{
+ struct dasd_device *device;
struct dasd_eckd_private *private;
struct eckd_count *count_area;
unsigned int sb, blk_per_trk;
int status, i;
+ device = block->base;
private = (struct dasd_eckd_private *) device->private;
status = private->init_cqr_status;
private->init_cqr_status = -1;
@@ -846,7 +1080,7 @@ dasd_eckd_end_analysis(struct dasd_device *device)
private->uses_cdl = 1;
/* Calculate number of blocks/records per track. */
- blk_per_trk = recs_per_track(&private->rdc_data, 0, device->bp_block);
+ blk_per_trk = recs_per_track(&private->rdc_data, 0, block->bp_block);
/* Check Track 0 for Compatible Disk Layout */
count_area = NULL;
for (i = 0; i < 3; i++) {
@@ -876,56 +1110,65 @@ dasd_eckd_end_analysis(struct dasd_device *device)
if (count_area != NULL && count_area->kl == 0) {
/* we found notthing violating our disk layout */
if (dasd_check_blocksize(count_area->dl) == 0)
- device->bp_block = count_area->dl;
+ block->bp_block = count_area->dl;
}
- if (device->bp_block == 0) {
+ if (block->bp_block == 0) {
DEV_MESSAGE(KERN_WARNING, device, "%s",
"Volume has incompatible disk layout");
return -EMEDIUMTYPE;
}
- device->s2b_shift = 0; /* bits to shift 512 to get a block */
- for (sb = 512; sb < device->bp_block; sb = sb << 1)
- device->s2b_shift++;
+ block->s2b_shift = 0; /* bits to shift 512 to get a block */
+ for (sb = 512; sb < block->bp_block; sb = sb << 1)
+ block->s2b_shift++;
- blk_per_trk = recs_per_track(&private->rdc_data, 0, device->bp_block);
- device->blocks = (private->rdc_data.no_cyl *
+ blk_per_trk = recs_per_track(&private->rdc_data, 0, block->bp_block);
+ block->blocks = (private->rdc_data.no_cyl *
private->rdc_data.trk_per_cyl *
blk_per_trk);
DEV_MESSAGE(KERN_INFO, device,
"(%dkB blks): %dkB at %dkB/trk %s",
- (device->bp_block >> 10),
+ (block->bp_block >> 10),
((private->rdc_data.no_cyl *
private->rdc_data.trk_per_cyl *
- blk_per_trk * (device->bp_block >> 9)) >> 1),
- ((blk_per_trk * device->bp_block) >> 10),
+ blk_per_trk * (block->bp_block >> 9)) >> 1),
+ ((blk_per_trk * block->bp_block) >> 10),
private->uses_cdl ?
"compatible disk layout" : "linux disk layout");
return 0;
}
-static int
-dasd_eckd_do_analysis(struct dasd_device *device)
+static int dasd_eckd_do_analysis(struct dasd_block *block)
{
struct dasd_eckd_private *private;
- private = (struct dasd_eckd_private *) device->private;
+ private = (struct dasd_eckd_private *) block->base->private;
if (private->init_cqr_status < 0)
- return dasd_eckd_start_analysis(device);
+ return dasd_eckd_start_analysis(block);
else
- return dasd_eckd_end_analysis(device);
+ return dasd_eckd_end_analysis(block);
}
+static int dasd_eckd_ready_to_online(struct dasd_device *device)
+{
+ return dasd_alias_add_device(device);
+};
+
+static int dasd_eckd_online_to_ready(struct dasd_device *device)
+{
+ return dasd_alias_remove_device(device);
+};
+
static int
-dasd_eckd_fill_geometry(struct dasd_device *device, struct hd_geometry *geo)
+dasd_eckd_fill_geometry(struct dasd_block *block, struct hd_geometry *geo)
{
struct dasd_eckd_private *private;
- private = (struct dasd_eckd_private *) device->private;
- if (dasd_check_blocksize(device->bp_block) == 0) {
+ private = (struct dasd_eckd_private *) block->base->private;
+ if (dasd_check_blocksize(block->bp_block) == 0) {
geo->sectors = recs_per_track(&private->rdc_data,
- 0, device->bp_block);
+ 0, block->bp_block);
}
geo->cylinders = private->rdc_data.no_cyl;
geo->heads = private->rdc_data.trk_per_cyl;
@@ -1037,7 +1280,7 @@ dasd_eckd_format_device(struct dasd_device * device,
locate_record(ccw++, (struct LO_eckd_data *) data,
fdata->start_unit, 0, rpt + 1,
DASD_ECKD_CCW_WRITE_RECORD_ZERO, device,
- device->bp_block);
+ device->block->bp_block);
data += sizeof(struct LO_eckd_data);
break;
case 0x04: /* Invalidate track. */
@@ -1110,43 +1353,28 @@ dasd_eckd_format_device(struct dasd_device * device,
ccw++;
}
}
- fcp->device = device;
- fcp->retries = 2; /* set retry counter to enable ERP */
+ fcp->startdev = device;
+ fcp->memdev = device;
+ clear_bit(DASD_CQR_FLAGS_USE_ERP, &fcp->flags);
+ fcp->retries = 5; /* set retry counter to enable default ERP */
fcp->buildclk = get_clock();
fcp->status = DASD_CQR_FILLED;
return fcp;
}
-static dasd_era_t
-dasd_eckd_examine_error(struct dasd_ccw_req * cqr, struct irb * irb)
+static void dasd_eckd_handle_terminated_request(struct dasd_ccw_req *cqr)
{
- struct dasd_device *device = (struct dasd_device *) cqr->device;
- struct ccw_device *cdev = device->cdev;
-
- if (irb->scsw.cstat == 0x00 &&
- irb->scsw.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END))
- return dasd_era_none;
-
- switch (cdev->id.cu_type) {
- case 0x3990:
- case 0x2105:
- case 0x2107:
- case 0x1750:
- return dasd_3990_erp_examine(cqr, irb);
- case 0x9343:
- return dasd_9343_erp_examine(cqr, irb);
- case 0x3880:
- default:
- DEV_MESSAGE(KERN_WARNING, device, "%s",
- "default (unknown CU type) - RECOVERABLE return");
- return dasd_era_recover;
+ cqr->status = DASD_CQR_FILLED;
+ if (cqr->block && (cqr->startdev != cqr->block->base)) {
+ dasd_eckd_reset_ccw_to_base_io(cqr);
+ cqr->startdev = cqr->block->base;
}
-}
+};
static dasd_erp_fn_t
dasd_eckd_erp_action(struct dasd_ccw_req * cqr)
{
- struct dasd_device *device = (struct dasd_device *) cqr->device;
+ struct dasd_device *device = (struct dasd_device *) cqr->startdev;
struct ccw_device *cdev = device->cdev;
switch (cdev->id.cu_type) {
@@ -1168,8 +1396,37 @@ dasd_eckd_erp_postaction(struct dasd_ccw_req * cqr)
return dasd_default_erp_postaction;
}
-static struct dasd_ccw_req *
-dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
+
+static void dasd_eckd_handle_unsolicited_interrupt(struct dasd_device *device,
+ struct irb *irb)
+{
+ char mask;
+
+ /* first of all check for state change pending interrupt */
+ mask = DEV_STAT_ATTENTION | DEV_STAT_DEV_END | DEV_STAT_UNIT_EXCEP;
+ if ((irb->scsw.dstat & mask) == mask) {
+ dasd_generic_handle_state_change(device);
+ return;
+ }
+
+ /* summary unit check */
+ if ((irb->scsw.dstat & DEV_STAT_UNIT_CHECK) && irb->ecw[7] == 0x0D) {
+ dasd_alias_handle_summary_unit_check(device, irb);
+ return;
+ }
+
+ /* just report other unsolicited interrupts */
+ DEV_MESSAGE(KERN_DEBUG, device, "%s",
+ "unsolicited interrupt received");
+ device->discipline->dump_sense(device, NULL, irb);
+ dasd_schedule_device_bh(device);
+
+ return;
+};
+
+static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev,
+ struct dasd_block *block,
+ struct request *req)
{
struct dasd_eckd_private *private;
unsigned long *idaws;
@@ -1185,8 +1442,11 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
sector_t first_trk, last_trk;
unsigned int first_offs, last_offs;
unsigned char cmd, rcmd;
+ int use_prefix;
+ struct dasd_device *basedev;
- private = (struct dasd_eckd_private *) device->private;
+ basedev = block->base;
+ private = (struct dasd_eckd_private *) basedev->private;
if (rq_data_dir(req) == READ)
cmd = DASD_ECKD_CCW_READ_MT;
else if (rq_data_dir(req) == WRITE)
@@ -1194,13 +1454,13 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
else
return ERR_PTR(-EINVAL);
/* Calculate number of blocks/records per track. */
- blksize = device->bp_block;
+ blksize = block->bp_block;
blk_per_trk = recs_per_track(&private->rdc_data, 0, blksize);
/* Calculate record id of first and last block. */
- first_rec = first_trk = req->sector >> device->s2b_shift;
+ first_rec = first_trk = req->sector >> block->s2b_shift;
first_offs = sector_div(first_trk, blk_per_trk);
last_rec = last_trk =
- (req->sector + req->nr_sectors - 1) >> device->s2b_shift;
+ (req->sector + req->nr_sectors - 1) >> block->s2b_shift;
last_offs = sector_div(last_trk, blk_per_trk);
/* Check struct bio and count the number of blocks for the request. */
count = 0;
@@ -1209,20 +1469,33 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
if (bv->bv_len & (blksize - 1))
/* Eckd can only do full blocks. */
return ERR_PTR(-EINVAL);
- count += bv->bv_len >> (device->s2b_shift + 9);
+ count += bv->bv_len >> (block->s2b_shift + 9);
#if defined(CONFIG_64BIT)
if (idal_is_needed (page_address(bv->bv_page), bv->bv_len))
- cidaw += bv->bv_len >> (device->s2b_shift + 9);
+ cidaw += bv->bv_len >> (block->s2b_shift + 9);
#endif
}
/* Paranoia. */
if (count != last_rec - first_rec + 1)
return ERR_PTR(-EINVAL);
- /* 1x define extent + 1x locate record + number of blocks */
- cplength = 2 + count;
- /* 1x define extent + 1x locate record + cidaws*sizeof(long) */
- datasize = sizeof(struct DE_eckd_data) + sizeof(struct LO_eckd_data) +
- cidaw * sizeof(unsigned long);
+
+ /* use the prefix command if available */
+ use_prefix = private->features.feature[8] & 0x01;
+ if (use_prefix) {
+ /* 1x prefix + number of blocks */
+ cplength = 2 + count;
+ /* 1x prefix + cidaws*sizeof(long) */
+ datasize = sizeof(struct PFX_eckd_data) +
+ sizeof(struct LO_eckd_data) +
+ cidaw * sizeof(unsigned long);
+ } else {
+ /* 1x define extent + 1x locate record + number of blocks */
+ cplength = 2 + count;
+ /* 1x define extent + 1x locate record + cidaws*sizeof(long) */
+ datasize = sizeof(struct DE_eckd_data) +
+ sizeof(struct LO_eckd_data) +
+ cidaw * sizeof(unsigned long);
+ }
/* Find out the number of additional locate record ccws for cdl. */
if (private->uses_cdl && first_rec < 2*blk_per_trk) {
if (last_rec >= 2*blk_per_trk)
@@ -1232,26 +1505,42 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
}
/* Allocate the ccw request. */
cqr = dasd_smalloc_request(dasd_eckd_discipline.name,
- cplength, datasize, device);
+ cplength, datasize, startdev);
if (IS_ERR(cqr))
return cqr;
ccw = cqr->cpaddr;
- /* First ccw is define extent. */
- if (define_extent(ccw++, cqr->data, first_trk,
- last_trk, cmd, device) == -EAGAIN) {
- /* Clock not in sync and XRC is enabled. Try again later. */
- dasd_sfree_request(cqr, device);
- return ERR_PTR(-EAGAIN);
+ /* First ccw is define extent or prefix. */
+ if (use_prefix) {
+ if (prefix(ccw++, cqr->data, first_trk,
+ last_trk, cmd, basedev, startdev) == -EAGAIN) {
+ /* Clock not in sync and XRC is enabled.
+ * Try again later.
+ */
+ dasd_sfree_request(cqr, startdev);
+ return ERR_PTR(-EAGAIN);
+ }
+ idaws = (unsigned long *) (cqr->data +
+ sizeof(struct PFX_eckd_data));
+ } else {
+ if (define_extent(ccw++, cqr->data, first_trk,
+ last_trk, cmd, startdev) == -EAGAIN) {
+ /* Clock not in sync and XRC is enabled.
+ * Try again later.
+ */
+ dasd_sfree_request(cqr, startdev);
+ return ERR_PTR(-EAGAIN);
+ }
+ idaws = (unsigned long *) (cqr->data +
+ sizeof(struct DE_eckd_data));
}
/* Build locate_record+read/write/ccws. */
- idaws = (unsigned long *) (cqr->data + sizeof(struct DE_eckd_data));
LO_data = (struct LO_eckd_data *) (idaws + cidaw);
recid = first_rec;
if (private->uses_cdl == 0 || recid > 2*blk_per_trk) {
/* Only standard blocks so there is just one locate record. */
ccw[-1].flags |= CCW_FLAG_CC;
locate_record(ccw++, LO_data++, first_trk, first_offs + 1,
- last_rec - recid + 1, cmd, device, blksize);
+ last_rec - recid + 1, cmd, basedev, blksize);
}
rq_for_each_segment(bv, req, iter) {
dst = page_address(bv->bv_page) + bv->bv_offset;
@@ -1281,7 +1570,7 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
ccw[-1].flags |= CCW_FLAG_CC;
locate_record(ccw++, LO_data++,
trkid, recoffs + 1,
- 1, rcmd, device, count);
+ 1, rcmd, basedev, count);
}
/* Locate record for standard blocks ? */
if (private->uses_cdl && recid == 2*blk_per_trk) {
@@ -1289,7 +1578,7 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
locate_record(ccw++, LO_data++,
trkid, recoffs + 1,
last_rec - recid + 1,
- cmd, device, count);
+ cmd, basedev, count);
}
/* Read/write ccw. */
ccw[-1].flags |= CCW_FLAG_CC;
@@ -1310,7 +1599,9 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
}
if (req->cmd_flags & REQ_FAILFAST)
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
- cqr->device = device;
+ cqr->startdev = startdev;
+ cqr->memdev = startdev;
+ cqr->block = block;
cqr->expires = 5 * 60 * HZ; /* 5 minutes */
cqr->lpm = private->path_data.ppm;
cqr->retries = 256;
@@ -1333,10 +1624,10 @@ dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req)
if (!dasd_page_cache)
goto out;
- private = (struct dasd_eckd_private *) cqr->device->private;
- blksize = cqr->device->bp_block;
+ private = (struct dasd_eckd_private *) cqr->block->base->private;
+ blksize = cqr->block->bp_block;
blk_per_trk = recs_per_track(&private->rdc_data, 0, blksize);
- recid = req->sector >> cqr->device->s2b_shift;
+ recid = req->sector >> cqr->block->s2b_shift;
ccw = cqr->cpaddr;
/* Skip over define extent & locate record. */
ccw++;
@@ -1367,10 +1658,71 @@ dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req)
}
out:
status = cqr->status == DASD_CQR_DONE;
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
return status;
}
+/*
+ * Modify ccw chain in cqr so it can be started on a base device.
+ *
+ * Note that this is not enough to restart the cqr!
+ * Either reset cqr->startdev as well (summary unit check handling)
+ * or restart via separate cqr (as in ERP handling).
+ */
+void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *cqr)
+{
+ struct ccw1 *ccw;
+ struct PFX_eckd_data *pfxdata;
+
+ ccw = cqr->cpaddr;
+ pfxdata = cqr->data;
+
+ if (ccw->cmd_code == DASD_ECKD_CCW_PFX) {
+ pfxdata->validity.verify_base = 0;
+ pfxdata->validity.hyper_pav = 0;
+ }
+}
+
+#define DASD_ECKD_CHANQ_MAX_SIZE 4
+
+static struct dasd_ccw_req *dasd_eckd_build_alias_cp(struct dasd_device *base,
+ struct dasd_block *block,
+ struct request *req)
+{
+ struct dasd_eckd_private *private;
+ struct dasd_device *startdev;
+ unsigned long flags;
+ struct dasd_ccw_req *cqr;
+
+ startdev = dasd_alias_get_start_dev(base);
+ if (!startdev)
+ startdev = base;
+ private = (struct dasd_eckd_private *) startdev->private;
+ if (private->count >= DASD_ECKD_CHANQ_MAX_SIZE)
+ return ERR_PTR(-EBUSY);
+
+ spin_lock_irqsave(get_ccwdev_lock(startdev->cdev), flags);
+ private->count++;
+ cqr = dasd_eckd_build_cp(startdev, block, req);
+ if (IS_ERR(cqr))
+ private->count--;
+ spin_unlock_irqrestore(get_ccwdev_lock(startdev->cdev), flags);
+ return cqr;
+}
+
+static int dasd_eckd_free_alias_cp(struct dasd_ccw_req *cqr,
+ struct request *req)
+{
+ struct dasd_eckd_private *private;
+ unsigned long flags;
+
+ spin_lock_irqsave(get_ccwdev_lock(cqr->memdev->cdev), flags);
+ private = (struct dasd_eckd_private *) cqr->memdev->private;
+ private->count--;
+ spin_unlock_irqrestore(get_ccwdev_lock(cqr->memdev->cdev), flags);
+ return dasd_eckd_free_cp(cqr, req);
+}
+
static int
dasd_eckd_fill_info(struct dasd_device * device,
struct dasd_information2_t * info)
@@ -1384,9 +1736,9 @@ dasd_eckd_fill_info(struct dasd_device * device,
info->characteristics_size = sizeof(struct dasd_eckd_characteristics);
memcpy(info->characteristics, &private->rdc_data,
sizeof(struct dasd_eckd_characteristics));
- info->confdata_size = sizeof (struct dasd_eckd_confdata);
+ info->confdata_size = sizeof(struct dasd_eckd_confdata);
memcpy(info->configuration_data, &private->conf_data,
- sizeof (struct dasd_eckd_confdata));
+ sizeof(struct dasd_eckd_confdata));
return 0;
}
@@ -1419,7 +1771,8 @@ dasd_eckd_release(struct dasd_device *device)
cqr->cpaddr->flags |= CCW_FLAG_SLI;
cqr->cpaddr->count = 32;
cqr->cpaddr->cda = (__u32)(addr_t) cqr->data;
- cqr->device = device;
+ cqr->startdev = device;
+ cqr->memdev = device;
clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
cqr->retries = 2; /* set retry counter to enable basic ERP */
@@ -1429,7 +1782,7 @@ dasd_eckd_release(struct dasd_device *device)
rc = dasd_sleep_on_immediatly(cqr);
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
return rc;
}
@@ -1459,7 +1812,8 @@ dasd_eckd_reserve(struct dasd_device *device)
cqr->cpaddr->flags |= CCW_FLAG_SLI;
cqr->cpaddr->count = 32;
cqr->cpaddr->cda = (__u32)(addr_t) cqr->data;
- cqr->device = device;
+ cqr->startdev = device;
+ cqr->memdev = device;
clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
cqr->retries = 2; /* set retry counter to enable basic ERP */
@@ -1469,7 +1823,7 @@ dasd_eckd_reserve(struct dasd_device *device)
rc = dasd_sleep_on_immediatly(cqr);
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
return rc;
}
@@ -1498,7 +1852,8 @@ dasd_eckd_steal_lock(struct dasd_device *device)
cqr->cpaddr->flags |= CCW_FLAG_SLI;
cqr->cpaddr->count = 32;
cqr->cpaddr->cda = (__u32)(addr_t) cqr->data;
- cqr->device = device;
+ cqr->startdev = device;
+ cqr->memdev = device;
clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
cqr->retries = 2; /* set retry counter to enable basic ERP */
@@ -1508,7 +1863,7 @@ dasd_eckd_steal_lock(struct dasd_device *device)
rc = dasd_sleep_on_immediatly(cqr);
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
return rc;
}
@@ -1526,52 +1881,52 @@ dasd_eckd_performance(struct dasd_device *device, void __user *argp)
cqr = dasd_smalloc_request(dasd_eckd_discipline.name,
1 /* PSF */ + 1 /* RSSD */ ,
- (sizeof (struct dasd_psf_prssd_data) +
- sizeof (struct dasd_rssd_perf_stats_t)),
+ (sizeof(struct dasd_psf_prssd_data) +
+ sizeof(struct dasd_rssd_perf_stats_t)),
device);
if (IS_ERR(cqr)) {
DEV_MESSAGE(KERN_WARNING, device, "%s",
"Could not allocate initialization request");
return PTR_ERR(cqr);
}
- cqr->device = device;
+ cqr->startdev = device;
+ cqr->memdev = device;
cqr->retries = 0;
cqr->expires = 10 * HZ;
/* Prepare for Read Subsystem Data */
prssdp = (struct dasd_psf_prssd_data *) cqr->data;
- memset(prssdp, 0, sizeof (struct dasd_psf_prssd_data));
+ memset(prssdp, 0, sizeof(struct dasd_psf_prssd_data));
prssdp->order = PSF_ORDER_PRSSD;
- prssdp->suborder = 0x01; /* Perfomance Statistics */
+ prssdp->suborder = 0x01; /* Performance Statistics */
prssdp->varies[1] = 0x01; /* Perf Statistics for the Subsystem */
ccw = cqr->cpaddr;
ccw->cmd_code = DASD_ECKD_CCW_PSF;
- ccw->count = sizeof (struct dasd_psf_prssd_data);
+ ccw->count = sizeof(struct dasd_psf_prssd_data);
ccw->flags |= CCW_FLAG_CC;
ccw->cda = (__u32)(addr_t) prssdp;
/* Read Subsystem Data - Performance Statistics */
stats = (struct dasd_rssd_perf_stats_t *) (prssdp + 1);
- memset(stats, 0, sizeof (struct dasd_rssd_perf_stats_t));
+ memset(stats, 0, sizeof(struct dasd_rssd_perf_stats_t));
ccw++;
ccw->cmd_code = DASD_ECKD_CCW_RSSD;
- ccw->count = sizeof (struct dasd_rssd_perf_stats_t);
+ ccw->count = sizeof(struct dasd_rssd_perf_stats_t);
ccw->cda = (__u32)(addr_t) stats;
cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
rc = dasd_sleep_on(cqr);
if (rc == 0) {
- /* Prepare for Read Subsystem Data */
prssdp = (struct dasd_psf_prssd_data *) cqr->data;
stats = (struct dasd_rssd_perf_stats_t *) (prssdp + 1);
if (copy_to_user(argp, stats,
sizeof(struct dasd_rssd_perf_stats_t)))
rc = -EFAULT;
}
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
return rc;
}
@@ -1594,7 +1949,7 @@ dasd_eckd_get_attrib(struct dasd_device *device, void __user *argp)
rc = 0;
if (copy_to_user(argp, (long *) &attrib,
- sizeof (struct attrib_data_t)))
+ sizeof(struct attrib_data_t)))
rc = -EFAULT;
return rc;
@@ -1627,8 +1982,10 @@ dasd_eckd_set_attrib(struct dasd_device *device, void __user *argp)
}
static int
-dasd_eckd_ioctl(struct dasd_device *device, unsigned int cmd, void __user *argp)
+dasd_eckd_ioctl(struct dasd_block *block, unsigned int cmd, void __user *argp)
{
+ struct dasd_device *device = block->base;
+
switch (cmd) {
case BIODASDGATTR:
return dasd_eckd_get_attrib(device, argp);
@@ -1685,9 +2042,8 @@ dasd_eckd_dump_ccw_range(struct ccw1 *from, struct ccw1 *to, char *page)
* Print sense data and related channel program.
* Parts are printed because printk buffer is only 1024 bytes.
*/
-static void
-dasd_eckd_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req,
- struct irb *irb)
+static void dasd_eckd_dump_sense(struct dasd_device *device,
+ struct dasd_ccw_req *req, struct irb *irb)
{
char *page;
struct ccw1 *first, *last, *fail, *from, *to;
@@ -1743,37 +2099,40 @@ dasd_eckd_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req,
}
printk("%s", page);
- /* dump the Channel Program (max 140 Bytes per line) */
- /* Count CCW and print first CCWs (maximum 1024 % 140 = 7) */
- first = req->cpaddr;
- for (last = first; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++);
- to = min(first + 6, last);
- len = sprintf(page, KERN_ERR PRINTK_HEADER
- " Related CP in req: %p\n", req);
- dasd_eckd_dump_ccw_range(first, to, page + len);
- printk("%s", page);
+ if (req) {
+ /* req == NULL for unsolicited interrupts */
+ /* dump the Channel Program (max 140 Bytes per line) */
+ /* Count CCW and print first CCWs (maximum 1024 % 140 = 7) */
+ first = req->cpaddr;
+ for (last = first; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++);
+ to = min(first + 6, last);
+ len = sprintf(page, KERN_ERR PRINTK_HEADER
+ " Related CP in req: %p\n", req);
+ dasd_eckd_dump_ccw_range(first, to, page + len);
+ printk("%s", page);
- /* print failing CCW area (maximum 4) */
- /* scsw->cda is either valid or zero */
- len = 0;
- from = ++to;
- fail = (struct ccw1 *)(addr_t) irb->scsw.cpa; /* failing CCW */
- if (from < fail - 2) {
- from = fail - 2; /* there is a gap - print header */
- len += sprintf(page, KERN_ERR PRINTK_HEADER "......\n");
- }
- to = min(fail + 1, last);
- len += dasd_eckd_dump_ccw_range(from, to, page + len);
-
- /* print last CCWs (maximum 2) */
- from = max(from, ++to);
- if (from < last - 1) {
- from = last - 1; /* there is a gap - print header */
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n");
+ /* print failing CCW area (maximum 4) */
+ /* scsw->cda is either valid or zero */
+ len = 0;
+ from = ++to;
+ fail = (struct ccw1 *)(addr_t) irb->scsw.cpa; /* failing CCW */
+ if (from < fail - 2) {
+ from = fail - 2; /* there is a gap - print header */
+ len += sprintf(page, KERN_ERR PRINTK_HEADER "......\n");
+ }
+ to = min(fail + 1, last);
+ len += dasd_eckd_dump_ccw_range(from, to, page + len);
+
+ /* print last CCWs (maximum 2) */
+ from = max(from, ++to);
+ if (from < last - 1) {
+ from = last - 1; /* there is a gap - print header */
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n");
+ }
+ len += dasd_eckd_dump_ccw_range(from, last, page + len);
+ if (len > 0)
+ printk("%s", page);
}
- len += dasd_eckd_dump_ccw_range(from, last, page + len);
- if (len > 0)
- printk("%s", page);
free_page((unsigned long) page);
}
@@ -1796,16 +2155,20 @@ static struct dasd_discipline dasd_eckd_discipline = {
.ebcname = "ECKD",
.max_blocks = 240,
.check_device = dasd_eckd_check_characteristics,
+ .uncheck_device = dasd_eckd_uncheck_device,
.do_analysis = dasd_eckd_do_analysis,
+ .ready_to_online = dasd_eckd_ready_to_online,
+ .online_to_ready = dasd_eckd_online_to_ready,
.fill_geometry = dasd_eckd_fill_geometry,
.start_IO = dasd_start_IO,
.term_IO = dasd_term_IO,
+ .handle_terminated_request = dasd_eckd_handle_terminated_request,
.format_device = dasd_eckd_format_device,
- .examine_error = dasd_eckd_examine_error,
.erp_action = dasd_eckd_erp_action,
.erp_postaction = dasd_eckd_erp_postaction,
- .build_cp = dasd_eckd_build_cp,
- .free_cp = dasd_eckd_free_cp,
+ .handle_unsolicited_interrupt = dasd_eckd_handle_unsolicited_interrupt,
+ .build_cp = dasd_eckd_build_alias_cp,
+ .free_cp = dasd_eckd_free_alias_cp,
.dump_sense = dasd_eckd_dump_sense,
.fill_info = dasd_eckd_fill_info,
.ioctl = dasd_eckd_ioctl,
diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index 712ff165013..fc2509c939b 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -39,6 +39,8 @@
#define DASD_ECKD_CCW_READ_CKD_MT 0x9e
#define DASD_ECKD_CCW_WRITE_CKD_MT 0x9d
#define DASD_ECKD_CCW_RESERVE 0xB4
+#define DASD_ECKD_CCW_PFX 0xE7
+#define DASD_ECKD_CCW_RSCK 0xF9
/*
* Perform Subsystem Function / Sub-Orders
@@ -137,6 +139,25 @@ struct LO_eckd_data {
__u16 length;
} __attribute__ ((packed));
+/* Prefix data for format 0x00 and 0x01 */
+struct PFX_eckd_data {
+ unsigned char format;
+ struct {
+ unsigned char define_extend:1;
+ unsigned char time_stamp:1;
+ unsigned char verify_base:1;
+ unsigned char hyper_pav:1;
+ unsigned char reserved:4;
+ } __attribute__ ((packed)) validity;
+ __u8 base_address;
+ __u8 aux;
+ __u8 base_lss;
+ __u8 reserved[7];
+ struct DE_eckd_data define_extend;
+ struct LO_eckd_data locate_record;
+ __u8 LO_extended_data[4];
+} __attribute__ ((packed));
+
struct dasd_eckd_characteristics {
__u16 cu_type;
struct {
@@ -254,7 +275,9 @@ struct dasd_eckd_confdata {
} __attribute__ ((packed)) ned;
struct {
unsigned char flags; /* byte 0 */
- unsigned char res2[7]; /* byte 1- 7 */
+ unsigned char res1; /* byte 1 */
+ __u16 format; /* byte 2-3 */
+ unsigned char res2[4]; /* byte 4-7 */
unsigned char sua_flags; /* byte 8 */
__u8 base_unit_addr; /* byte 9 */
unsigned char res3[22]; /* byte 10-31 */
@@ -343,6 +366,11 @@ struct dasd_eckd_path {
__u8 npm;
};
+struct dasd_rssd_features {
+ char feature[256];
+} __attribute__((packed));
+
+
/*
* Perform Subsystem Function - Prepare for Read Subsystem Data
*/
@@ -365,4 +393,99 @@ struct dasd_psf_ssc_data {
unsigned char reserved[59];
} __attribute__((packed));
+
+/*
+ * some structures and definitions for alias handling
+ */
+struct dasd_unit_address_configuration {
+ struct {
+ char ua_type;
+ char base_ua;
+ } unit[256];
+} __attribute__((packed));
+
+
+#define MAX_DEVICES_PER_LCU 256
+
+/* flags on the LCU */
+#define NEED_UAC_UPDATE 0x01
+#define UPDATE_PENDING 0x02
+
+enum pavtype {NO_PAV, BASE_PAV, HYPER_PAV};
+
+
+struct alias_root {
+ struct list_head serverlist;
+ spinlock_t lock;
+};
+
+struct alias_server {
+ struct list_head server;
+ struct dasd_uid uid;
+ struct list_head lculist;
+};
+
+struct summary_unit_check_work_data {
+ char reason;
+ struct dasd_device *device;
+ struct work_struct worker;
+};
+
+struct read_uac_work_data {
+ struct dasd_device *device;
+ struct delayed_work dwork;
+};
+
+struct alias_lcu {
+ struct list_head lcu;
+ struct dasd_uid uid;
+ enum pavtype pav;
+ char flags;
+ spinlock_t lock;
+ struct list_head grouplist;
+ struct list_head active_devices;
+ struct list_head inactive_devices;
+ struct dasd_unit_address_configuration *uac;
+ struct summary_unit_check_work_data suc_data;
+ struct read_uac_work_data ruac_data;
+ struct dasd_ccw_req *rsu_cqr;
+};
+
+struct alias_pav_group {
+ struct list_head group;
+ struct dasd_uid uid;
+ struct alias_lcu *lcu;
+ struct list_head baselist;
+ struct list_head aliaslist;
+ struct dasd_device *next;
+};
+
+
+struct dasd_eckd_private {
+ struct dasd_eckd_characteristics rdc_data;
+ struct dasd_eckd_confdata conf_data;
+ struct dasd_eckd_path path_data;
+ struct eckd_count count_area[5];
+ int init_cqr_status;
+ int uses_cdl;
+ struct attrib_data_t attrib; /* e.g. cache operations */
+ struct dasd_rssd_features features;
+
+ /* alias managemnet */
+ struct dasd_uid uid;
+ struct alias_pav_group *pavgroup;
+ struct alias_lcu *lcu;
+ int count;
+};
+
+
+
+int dasd_alias_make_device_known_to_lcu(struct dasd_device *);
+void dasd_alias_disconnect_device_from_lcu(struct dasd_device *);
+int dasd_alias_add_device(struct dasd_device *);
+int dasd_alias_remove_device(struct dasd_device *);
+struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *);
+void dasd_alias_handle_summary_unit_check(struct dasd_device *, struct irb *);
+void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *);
+
#endif /* DASD_ECKD_H */
diff --git a/drivers/s390/block/dasd_eer.c b/drivers/s390/block/dasd_eer.c
index 0c081a664ee..6e53ab606e9 100644
--- a/drivers/s390/block/dasd_eer.c
+++ b/drivers/s390/block/dasd_eer.c
@@ -336,7 +336,7 @@ static void dasd_eer_write_snss_trigger(struct dasd_device *device,
unsigned long flags;
struct eerbuffer *eerb;
- snss_rc = (cqr->status == DASD_CQR_FAILED) ? -EIO : 0;
+ snss_rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO;
if (snss_rc)
data_size = 0;
else
@@ -404,10 +404,11 @@ void dasd_eer_snss(struct dasd_device *device)
set_bit(DASD_FLAG_EER_SNSS, &device->flags);
return;
}
+ /* cdev is already locked, can't use dasd_add_request_head */
clear_bit(DASD_FLAG_EER_SNSS, &device->flags);
cqr->status = DASD_CQR_QUEUED;
- list_add(&cqr->list, &device->ccw_queue);
- dasd_schedule_bh(device);
+ list_add(&cqr->devlist, &device->ccw_queue);
+ dasd_schedule_device_bh(device);
}
/*
@@ -415,7 +416,7 @@ void dasd_eer_snss(struct dasd_device *device)
*/
static void dasd_eer_snss_cb(struct dasd_ccw_req *cqr, void *data)
{
- struct dasd_device *device = cqr->device;
+ struct dasd_device *device = cqr->startdev;
unsigned long flags;
dasd_eer_write(device, cqr, DASD_EER_STATECHANGE);
@@ -458,7 +459,7 @@ int dasd_eer_enable(struct dasd_device *device)
if (!cqr)
return -ENOMEM;
- cqr->device = device;
+ cqr->startdev = device;
cqr->retries = 255;
cqr->expires = 10 * HZ;
clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
diff --git a/drivers/s390/block/dasd_erp.c b/drivers/s390/block/dasd_erp.c
index caa5d91420f..8f10000851a 100644
--- a/drivers/s390/block/dasd_erp.c
+++ b/drivers/s390/block/dasd_erp.c
@@ -46,6 +46,8 @@ dasd_alloc_erp_request(char *magic, int cplength, int datasize,
if (cqr == NULL)
return ERR_PTR(-ENOMEM);
memset(cqr, 0, sizeof(struct dasd_ccw_req));
+ INIT_LIST_HEAD(&cqr->devlist);
+ INIT_LIST_HEAD(&cqr->blocklist);
data = (char *) cqr + ((sizeof(struct dasd_ccw_req) + 7L) & -8L);
cqr->cpaddr = NULL;
if (cplength > 0) {
@@ -66,7 +68,7 @@ dasd_alloc_erp_request(char *magic, int cplength, int datasize,
}
void
-dasd_free_erp_request(struct dasd_ccw_req * cqr, struct dasd_device * device)
+dasd_free_erp_request(struct dasd_ccw_req *cqr, struct dasd_device * device)
{
unsigned long flags;
@@ -81,11 +83,11 @@ dasd_free_erp_request(struct dasd_ccw_req * cqr, struct dasd_device * device)
* dasd_default_erp_action just retries the current cqr
*/
struct dasd_ccw_req *
-dasd_default_erp_action(struct dasd_ccw_req * cqr)
+dasd_default_erp_action(struct dasd_ccw_req *cqr)
{
struct dasd_device *device;
- device = cqr->device;
+ device = cqr->startdev;
/* just retry - there is nothing to save ... I got no sense data.... */
if (cqr->retries > 0) {
@@ -93,12 +95,12 @@ dasd_default_erp_action(struct dasd_ccw_req * cqr)
"default ERP called (%i retries left)",
cqr->retries);
cqr->lpm = LPM_ANYPATH;
- cqr->status = DASD_CQR_QUEUED;
+ cqr->status = DASD_CQR_FILLED;
} else {
DEV_MESSAGE (KERN_WARNING, device, "%s",
"default ERP called (NO retry left)");
cqr->status = DASD_CQR_FAILED;
- cqr->stopclk = get_clock ();
+ cqr->stopclk = get_clock();
}
return cqr;
} /* end dasd_default_erp_action */
@@ -117,15 +119,12 @@ dasd_default_erp_action(struct dasd_ccw_req * cqr)
* RETURN VALUES
* cqr pointer to the original CQR
*/
-struct dasd_ccw_req *
-dasd_default_erp_postaction(struct dasd_ccw_req * cqr)
+struct dasd_ccw_req *dasd_default_erp_postaction(struct dasd_ccw_req *cqr)
{
- struct dasd_device *device;
int success;
BUG_ON(cqr->refers == NULL || cqr->function == NULL);
- device = cqr->device;
success = cqr->status == DASD_CQR_DONE;
/* free all ERPs - but NOT the original cqr */
@@ -133,10 +132,10 @@ dasd_default_erp_postaction(struct dasd_ccw_req * cqr)
struct dasd_ccw_req *refers;
refers = cqr->refers;
- /* remove the request from the device queue */
- list_del(&cqr->list);
+ /* remove the request from the block queue */
+ list_del(&cqr->blocklist);
/* free the finished erp request */
- dasd_free_erp_request(cqr, device);
+ dasd_free_erp_request(cqr, cqr->memdev);
cqr = refers;
}
@@ -157,7 +156,7 @@ dasd_log_sense(struct dasd_ccw_req *cqr, struct irb *irb)
{
struct dasd_device *device;
- device = cqr->device;
+ device = cqr->startdev;
/* dump sense data */
if (device->discipline && device->discipline->dump_sense)
device->discipline->dump_sense(device, cqr, irb);
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index 1d95822e0b8..d13ea05089a 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -117,6 +117,7 @@ locate_record(struct ccw1 * ccw, struct LO_fba_data *data, int rw,
static int
dasd_fba_check_characteristics(struct dasd_device *device)
{
+ struct dasd_block *block;
struct dasd_fba_private *private;
struct ccw_device *cdev = device->cdev;
void *rdc_data;
@@ -133,6 +134,16 @@ dasd_fba_check_characteristics(struct dasd_device *device)
}
device->private = (void *) private;
}
+ block = dasd_alloc_block();
+ if (IS_ERR(block)) {
+ DEV_MESSAGE(KERN_WARNING, device, "%s",
+ "could not allocate dasd block structure");
+ kfree(device->private);
+ return PTR_ERR(block);
+ }
+ device->block = block;
+ block->base = device;
+
/* Read Device Characteristics */
rdc_data = (void *) &(private->rdc_data);
rc = dasd_generic_read_dev_chars(device, "FBA ", &rdc_data, 32);
@@ -155,60 +166,37 @@ dasd_fba_check_characteristics(struct dasd_device *device)
return 0;
}
-static int
-dasd_fba_do_analysis(struct dasd_device *device)
+static int dasd_fba_do_analysis(struct dasd_block *block)
{
struct dasd_fba_private *private;
int sb, rc;
- private = (struct dasd_fba_private *) device->private;
+ private = (struct dasd_fba_private *) block->base->private;
rc = dasd_check_blocksize(private->rdc_data.blk_size);
if (rc) {
- DEV_MESSAGE(KERN_INFO, device, "unknown blocksize %d",
+ DEV_MESSAGE(KERN_INFO, block->base, "unknown blocksize %d",
private->rdc_data.blk_size);
return rc;
}
- device->blocks = private->rdc_data.blk_bdsa;
- device->bp_block = private->rdc_data.blk_size;
- device->s2b_shift = 0; /* bits to shift 512 to get a block */
+ block->blocks = private->rdc_data.blk_bdsa;
+ block->bp_block = private->rdc_data.blk_size;
+ block->s2b_shift = 0; /* bits to shift 512 to get a block */
for (sb = 512; sb < private->rdc_data.blk_size; sb = sb << 1)
- device->s2b_shift++;
+ block->s2b_shift++;
return 0;
}
-static int
-dasd_fba_fill_geometry(struct dasd_device *device, struct hd_geometry *geo)
+static int dasd_fba_fill_geometry(struct dasd_block *block,
+ struct hd_geometry *geo)
{
- if (dasd_check_blocksize(device->bp_block) != 0)
+ if (dasd_check_blocksize(block->bp_block) != 0)
return -EINVAL;
- geo->cylinders = (device->blocks << device->s2b_shift) >> 10;
+ geo->cylinders = (block->blocks << block->s2b_shift) >> 10;
geo->heads = 16;
- geo->sectors = 128 >> device->s2b_shift;
+ geo->sectors = 128 >> block->s2b_shift;
return 0;
}
-static dasd_era_t
-dasd_fba_examine_error(struct dasd_ccw_req * cqr, struct irb * irb)
-{
- struct dasd_device *device;
- struct ccw_device *cdev;
-
- device = (struct dasd_device *) cqr->device;
- if (irb->scsw.cstat == 0x00 &&
- irb->scsw.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END))
- return dasd_era_none;
-
- cdev = device->cdev;
- switch (cdev->id.dev_type) {
- case 0x3370:
- return dasd_3370_erp_examine(cqr, irb);
- case 0x9336:
- return dasd_9336_erp_examine(cqr, irb);
- default:
- return dasd_era_recover;
- }
-}
-
static dasd_erp_fn_t
dasd_fba_erp_action(struct dasd_ccw_req * cqr)
{
@@ -221,13 +209,34 @@ dasd_fba_erp_postaction(struct dasd_ccw_req * cqr)
if (cqr->function == dasd_default_erp_action)
return dasd_default_erp_postaction;
- DEV_MESSAGE(KERN_WARNING, cqr->device, "unknown ERP action %p",
+ DEV_MESSAGE(KERN_WARNING, cqr->startdev, "unknown ERP action %p",
cqr->function);
return NULL;
}
-static struct dasd_ccw_req *
-dasd_fba_build_cp(struct dasd_device * device, struct request *req)
+static void dasd_fba_handle_unsolicited_interrupt(struct dasd_device *device,
+ struct irb *irb)
+{
+ char mask;
+
+ /* first of all check for state change pending interrupt */
+ mask = DEV_STAT_ATTENTION | DEV_STAT_DEV_END | DEV_STAT_UNIT_EXCEP;
+ if ((irb->scsw.dstat & mask) == mask) {
+ dasd_generic_handle_state_change(device);
+ return;
+ }
+
+ /* check for unsolicited interrupts */
+ DEV_MESSAGE(KERN_DEBUG, device, "%s",
+ "unsolicited interrupt received");
+ device->discipline->dump_sense(device, NULL, irb);
+ dasd_schedule_device_bh(device);
+ return;
+};
+
+static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev,
+ struct dasd_block *block,
+ struct request *req)
{
struct dasd_fba_private *private;
unsigned long *idaws;
@@ -242,17 +251,17 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req)
unsigned int blksize, off;
unsigned char cmd;
- private = (struct dasd_fba_private *) device->private;
+ private = (struct dasd_fba_private *) block->base->private;
if (rq_data_dir(req) == READ) {
cmd = DASD_FBA_CCW_READ;
} else if (rq_data_dir(req) == WRITE) {
cmd = DASD_FBA_CCW_WRITE;
} else
return ERR_PTR(-EINVAL);
- blksize = device->bp_block;
+ blksize = block->bp_block;
/* Calculate record id of first and last block. */
- first_rec = req->sector >> device->s2b_shift;
- last_rec = (req->sector + req->nr_sectors - 1) >> device->s2b_shift;
+ first_rec = req->sector >> block->s2b_shift;
+ last_rec = (req->sector + req->nr_sectors - 1) >> block->s2b_shift;
/* Check struct bio and count the number of blocks for the request. */
count = 0;
cidaw = 0;
@@ -260,7 +269,7 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req)
if (bv->bv_len & (blksize - 1))
/* Fba can only do full blocks. */
return ERR_PTR(-EINVAL);
- count += bv->bv_len >> (device->s2b_shift + 9);
+ count += bv->bv_len >> (block->s2b_shift + 9);
#if defined(CONFIG_64BIT)
if (idal_is_needed (page_address(bv->bv_page), bv->bv_len))
cidaw += bv->bv_len / blksize;
@@ -284,13 +293,13 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req)
}
/* Allocate the ccw request. */
cqr = dasd_smalloc_request(dasd_fba_discipline.name,
- cplength, datasize, device);
+ cplength, datasize, memdev);
if (IS_ERR(cqr))
return cqr;
ccw = cqr->cpaddr;
/* First ccw is define extent. */
define_extent(ccw++, cqr->data, rq_data_dir(req),
- device->bp_block, req->sector, req->nr_sectors);
+ block->bp_block, req->sector, req->nr_sectors);
/* Build locate_record + read/write ccws. */
idaws = (unsigned long *) (cqr->data + sizeof(struct DE_fba_data));
LO_data = (struct LO_fba_data *) (idaws + cidaw);
@@ -326,7 +335,7 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req)
ccw[-1].flags |= CCW_FLAG_CC;
}
ccw->cmd_code = cmd;
- ccw->count = device->bp_block;
+ ccw->count = block->bp_block;
if (idal_is_needed(dst, blksize)) {
ccw->cda = (__u32)(addr_t) idaws;
ccw->flags = CCW_FLAG_IDA;
@@ -342,7 +351,9 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req)
}
if (req->cmd_flags & REQ_FAILFAST)
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
- cqr->device = device;
+ cqr->startdev = memdev;
+ cqr->memdev = memdev;
+ cqr->block = block;
cqr->expires = 5 * 60 * HZ; /* 5 minutes */
cqr->retries = 32;
cqr->buildclk = get_clock();
@@ -363,8 +374,8 @@ dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req)
if (!dasd_page_cache)
goto out;
- private = (struct dasd_fba_private *) cqr->device->private;
- blksize = cqr->device->bp_block;
+ private = (struct dasd_fba_private *) cqr->block->base->private;
+ blksize = cqr->block->bp_block;
ccw = cqr->cpaddr;
/* Skip over define extent & locate record. */
ccw++;
@@ -394,10 +405,15 @@ dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req)
}
out:
status = cqr->status == DASD_CQR_DONE;
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
return status;
}
+static void dasd_fba_handle_terminated_request(struct dasd_ccw_req *cqr)
+{
+ cqr->status = DASD_CQR_FILLED;
+};
+
static int
dasd_fba_fill_info(struct dasd_device * device,
struct dasd_information2_t * info)
@@ -546,9 +562,10 @@ static struct dasd_discipline dasd_fba_discipline = {
.fill_geometry = dasd_fba_fill_geometry,
.start_IO = dasd_start_IO,
.term_IO = dasd_term_IO,
- .examine_error = dasd_fba_examine_error,
+ .handle_terminated_request = dasd_fba_handle_terminated_request,
.erp_action = dasd_fba_erp_action,
.erp_postaction = dasd_fba_erp_postaction,
+ .handle_unsolicited_interrupt = dasd_fba_handle_unsolicited_interrupt,
.build_cp = dasd_fba_build_cp,
.free_cp = dasd_fba_free_cp,
.dump_sense = dasd_fba_dump_sense,
diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c
index 47ba4462708..aee6565aaf9 100644
--- a/drivers/s390/block/dasd_genhd.c
+++ b/drivers/s390/block/dasd_genhd.c
@@ -25,14 +25,15 @@
/*
* Allocate and register gendisk structure for device.
*/
-int
-dasd_gendisk_alloc(struct dasd_device *device)
+int dasd_gendisk_alloc(struct dasd_block *block)
{
struct gendisk *gdp;
+ struct dasd_device *base;
int len;
/* Make sure the minor for this device exists. */
- if (device->devindex >= DASD_PER_MAJOR)
+ base = block->base;
+ if (base->devindex >= DASD_PER_MAJOR)
return -EBUSY;
gdp = alloc_disk(1 << DASD_PARTN_BITS);
@@ -41,9 +42,9 @@ dasd_gendisk_alloc(struct dasd_device *device)
/* Initialize gendisk structure. */
gdp->major = DASD_MAJOR;
- gdp->first_minor = device->devindex << DASD_PARTN_BITS;
+ gdp->first_minor = base->devindex << DASD_PARTN_BITS;
gdp->fops = &dasd_device_operations;
- gdp->driverfs_dev = &device->cdev->dev;
+ gdp->driverfs_dev = &base->cdev->dev;
/*
* Set device name.
@@ -53,53 +54,51 @@ dasd_gendisk_alloc(struct dasd_device *device)
* dasdaaaa - dasdzzzz : 456976 devices, added up = 475252
*/
len = sprintf(gdp->disk_name, "dasd");
- if (device->devindex > 25) {
- if (device->devindex > 701) {
- if (device->devindex > 18277)
+ if (base->devindex > 25) {
+ if (base->devindex > 701) {
+ if (base->devindex > 18277)
len += sprintf(gdp->disk_name + len, "%c",
- 'a'+(((device->devindex-18278)
+ 'a'+(((base->devindex-18278)
/17576)%26));
len += sprintf(gdp->disk_name + len, "%c",
- 'a'+(((device->devindex-702)/676)%26));
+ 'a'+(((base->devindex-702)/676)%26));
}
len += sprintf(gdp->disk_name + len, "%c",
- 'a'+(((device->devindex-26)/26)%26));
+ 'a'+(((base->devindex-26)/26)%26));
}
- len += sprintf(gdp->disk_name + len, "%c", 'a'+(device->devindex%26));
+ len += sprintf(gdp->disk_name + len, "%c", 'a'+(base->devindex%26));
- if (device->features & DASD_FEATURE_READONLY)
+ if (block->base->features & DASD_FEATURE_READONLY)
set_disk_ro(gdp, 1);
- gdp->private_data = device;
- gdp->queue = device->request_queue;
- device->gdp = gdp;
- set_capacity(device->gdp, 0);
- add_disk(device->gdp);
+ gdp->private_data = block;
+ gdp->queue = block->request_queue;
+ block->gdp = gdp;
+ set_capacity(block->gdp, 0);
+ add_disk(block->gdp);
return 0;
}
/*
* Unregister and free gendisk structure for device.
*/
-void
-dasd_gendisk_free(struct dasd_device *device)
+void dasd_gendisk_free(struct dasd_block *block)
{
- if (device->gdp) {
- del_gendisk(device->gdp);
- device->gdp->queue = NULL;
- put_disk(device->gdp);
- device->gdp = NULL;
+ if (block->gdp) {
+ del_gendisk(block->gdp);
+ block->gdp->queue = NULL;
+ put_disk(block->gdp);
+ block->gdp = NULL;
}
}
/*
* Trigger a partition detection.
*/
-int
-dasd_scan_partitions(struct dasd_device * device)
+int dasd_scan_partitions(struct dasd_block *block)
{
struct block_device *bdev;
- bdev = bdget_disk(device->gdp, 0);
+ bdev = bdget_disk(block->gdp, 0);
if (!bdev || blkdev_get(bdev, FMODE_READ, 1) < 0)
return -ENODEV;
/*
@@ -117,7 +116,7 @@ dasd_scan_partitions(struct dasd_device * device)
* is why the assignment to device->bdev is done AFTER
* the BLKRRPART ioctl.
*/
- device->bdev = bdev;
+ block->bdev = bdev;
return 0;
}
@@ -125,8 +124,7 @@ dasd_scan_partitions(struct dasd_device * device)
* Remove all inodes in the system for a device, delete the
* partitions and make device unusable by setting its size to zero.
*/
-void
-dasd_destroy_partitions(struct dasd_device * device)
+void dasd_destroy_partitions(struct dasd_block *block)
{
/* The two structs have 168/176 byte on 31/64 bit. */
struct blkpg_partition bpart;
@@ -137,8 +135,8 @@ dasd_destroy_partitions(struct dasd_device * device)
* Get the bdev pointer from the device structure and clear
* device->bdev to lower the offline open_count limit again.
*/
- bdev = device->bdev;
- device->bdev = NULL;
+ bdev = block->bdev;
+ block->bdev = NULL;
/*
* See fs/partition/check.c:delete_partition
@@ -149,17 +147,16 @@ dasd_destroy_partitions(struct dasd_device * device)
memset(&barg, 0, sizeof(struct blkpg_ioctl_arg));
barg.data = (void __force __user *) &bpart;
barg.op = BLKPG_DEL_PARTITION;
- for (bpart.pno = device->gdp->minors - 1; bpart.pno > 0; bpart.pno--)
+ for (bpart.pno = block->gdp->minors - 1; bpart.pno > 0; bpart.pno--)
ioctl_by_bdev(bdev, BLKPG, (unsigned long) &barg);
- invalidate_partition(device->gdp, 0);
+ invalidate_partition(block->gdp, 0);
/* Matching blkdev_put to the blkdev_get in dasd_scan_partitions. */
blkdev_put(bdev);
- set_capacity(device->gdp, 0);
+ set_capacity(block->gdp, 0);
}
-int
-dasd_gendisk_init(void)
+int dasd_gendisk_init(void)
{
int rc;
@@ -174,8 +171,7 @@ dasd_gendisk_init(void)
return 0;
}
-void
-dasd_gendisk_exit(void)
+void dasd_gendisk_exit(void)
{
unregister_blkdev(DASD_MAJOR, "dasd");
}
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index d427daeef51..44b2984dfbe 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -64,13 +64,7 @@
* SECTION: Type definitions
*/
struct dasd_device;
-
-typedef enum {
- dasd_era_fatal = -1, /* no chance to recover */
- dasd_era_none = 0, /* don't recover, everything alright */
- dasd_era_msg = 1, /* don't recover, just report... */
- dasd_era_recover = 2 /* recovery action recommended */
-} dasd_era_t;
+struct dasd_block;
/* BIT DEFINITIONS FOR SENSE DATA */
#define DASD_SENSE_BIT_0 0x80
@@ -151,19 +145,22 @@ do { \
struct dasd_ccw_req {
unsigned int magic; /* Eye catcher */
- struct list_head list; /* list_head for request queueing. */
+ struct list_head devlist; /* for dasd_device request queue */
+ struct list_head blocklist; /* for dasd_block request queue */
/* Where to execute what... */
- struct dasd_device *device; /* device the request is for */
+ struct dasd_block *block; /* the originating block device */
+ struct dasd_device *memdev; /* the device used to allocate this */
+ struct dasd_device *startdev; /* device the request is started on */
struct ccw1 *cpaddr; /* address of channel program */
- char status; /* status of this request */
+ char status; /* status of this request */
short retries; /* A retry counter */
unsigned long flags; /* flags of this request */
/* ... and how */
unsigned long starttime; /* jiffies time of request start */
int expires; /* expiration period in jiffies */
- char lpm; /* logical path mask */
+ char lpm; /* logical path mask */
void *data; /* pointer to data area */
/* these are important for recovering erroneous requests */
@@ -178,20 +175,27 @@ struct dasd_ccw_req {
unsigned long long endclk; /* TOD-clock of request termination */
/* Callback that is called after reaching final status. */
- void (*callback)(struct dasd_ccw_req *, void *data);
- void *callback_data;
+ void (*callback)(struct dasd_ccw_req *, void *data);
+ void *callback_data;
};
/*
* dasd_ccw_req -> status can be:
*/
-#define DASD_CQR_FILLED 0x00 /* request is ready to be processed */
-#define DASD_CQR_QUEUED 0x01 /* request is queued to be processed */
-#define DASD_CQR_IN_IO 0x02 /* request is currently in IO */
-#define DASD_CQR_DONE 0x03 /* request is completed successfully */
-#define DASD_CQR_ERROR 0x04 /* request is completed with error */
-#define DASD_CQR_FAILED 0x05 /* request is finally failed */
-#define DASD_CQR_CLEAR 0x06 /* request is clear pending */
+#define DASD_CQR_FILLED 0x00 /* request is ready to be processed */
+#define DASD_CQR_DONE 0x01 /* request is completed successfully */
+#define DASD_CQR_NEED_ERP 0x02 /* request needs recovery action */
+#define DASD_CQR_IN_ERP 0x03 /* request is in recovery */
+#define DASD_CQR_FAILED 0x04 /* request is finally failed */
+#define DASD_CQR_TERMINATED 0x05 /* request was stopped by driver */
+
+#define DASD_CQR_QUEUED 0x80 /* request is queued to be processed */
+#define DASD_CQR_IN_IO 0x81 /* request is currently in IO */
+#define DASD_CQR_ERROR 0x82 /* request is completed with error */
+#define DASD_CQR_CLEAR_PENDING 0x83 /* request is clear pending */
+#define DASD_CQR_CLEARED 0x84 /* request was cleared */
+#define DASD_CQR_SUCCESS 0x85 /* request was successfull */
+
/* per dasd_ccw_req flags */
#define DASD_CQR_FLAGS_USE_ERP 0 /* use ERP for this request */
@@ -214,52 +218,71 @@ struct dasd_discipline {
struct list_head list; /* used for list of disciplines */
- /*
- * Device recognition functions. check_device is used to verify
- * the sense data and the information returned by read device
- * characteristics. It returns 0 if the discipline can be used
- * for the device in question.
- * do_analysis is used in the step from device state "basic" to
- * state "accept". It returns 0 if the device can be made ready,
- * it returns -EMEDIUMTYPE if the device can't be made ready or
- * -EAGAIN if do_analysis started a ccw that needs to complete
- * before the analysis may be repeated.
- */
- int (*check_device)(struct dasd_device *);
- int (*do_analysis) (struct dasd_device *);
-
- /*
- * Device operation functions. build_cp creates a ccw chain for
- * a block device request, start_io starts the request and
- * term_IO cancels it (e.g. in case of a timeout). format_device
- * returns a ccw chain to be used to format the device.
- */
+ /*
+ * Device recognition functions. check_device is used to verify
+ * the sense data and the information returned by read device
+ * characteristics. It returns 0 if the discipline can be used
+ * for the device in question. uncheck_device is called during
+ * device shutdown to deregister a device from its discipline.
+ */
+ int (*check_device) (struct dasd_device *);
+ void (*uncheck_device) (struct dasd_device *);
+
+ /*
+ * do_analysis is used in the step from device state "basic" to
+ * state "accept". It returns 0 if the device can be made ready,
+ * it returns -EMEDIUMTYPE if the device can't be made ready or
+ * -EAGAIN if do_analysis started a ccw that needs to complete
+ * before the analysis may be repeated.
+ */
+ int (*do_analysis) (struct dasd_block *);
+
+ /*
+ * Last things to do when a device is set online, and first things
+ * when it is set offline.
+ */
+ int (*ready_to_online) (struct dasd_device *);
+ int (*online_to_ready) (struct dasd_device *);
+
+ /*
+ * Device operation functions. build_cp creates a ccw chain for
+ * a block device request, start_io starts the request and
+ * term_IO cancels it (e.g. in case of a timeout). format_device
+ * returns a ccw chain to be used to format the device.
+ * handle_terminated_request allows to examine a cqr and prepare
+ * it for retry.
+ */
struct dasd_ccw_req *(*build_cp) (struct dasd_device *,
+ struct dasd_block *,
struct request *);
int (*start_IO) (struct dasd_ccw_req *);
int (*term_IO) (struct dasd_ccw_req *);
+ void (*handle_terminated_request) (struct dasd_ccw_req *);
struct dasd_ccw_req *(*format_device) (struct dasd_device *,
struct format_data_t *);
int (*free_cp) (struct dasd_ccw_req *, struct request *);
- /*
- * Error recovery functions. examine_error() returns a value that
- * indicates what to do for an error condition. If examine_error()
+
+ /*
+ * Error recovery functions. examine_error() returns a value that
+ * indicates what to do for an error condition. If examine_error()
* returns 'dasd_era_recover' erp_action() is called to create a
- * special error recovery ccw. erp_postaction() is called after
- * an error recovery ccw has finished its execution. dump_sense
- * is called for every error condition to print the sense data
- * to the console.
- */
- dasd_era_t(*examine_error) (struct dasd_ccw_req *, struct irb *);
+ * special error recovery ccw. erp_postaction() is called after
+ * an error recovery ccw has finished its execution. dump_sense
+ * is called for every error condition to print the sense data
+ * to the console.
+ */
dasd_erp_fn_t(*erp_action) (struct dasd_ccw_req *);
dasd_erp_fn_t(*erp_postaction) (struct dasd_ccw_req *);
void (*dump_sense) (struct dasd_device *, struct dasd_ccw_req *,
struct irb *);
+ void (*handle_unsolicited_interrupt) (struct dasd_device *,
+ struct irb *);
+
/* i/o control functions. */
- int (*fill_geometry) (struct dasd_device *, struct hd_geometry *);
+ int (*fill_geometry) (struct dasd_block *, struct hd_geometry *);
int (*fill_info) (struct dasd_device *, struct dasd_information2_t *);
- int (*ioctl) (struct dasd_device *, unsigned int, void __user *);
+ int (*ioctl) (struct dasd_block *, unsigned int, void __user *);
};
extern struct dasd_discipline *dasd_diag_discipline_pointer;
@@ -267,12 +290,18 @@ extern struct dasd_discipline *dasd_diag_discipline_pointer;
/*
* Unique identifier for dasd device.
*/
+#define UA_NOT_CONFIGURED 0x00
+#define UA_BASE_DEVICE 0x01
+#define UA_BASE_PAV_ALIAS 0x02
+#define UA_HYPER_PAV_ALIAS 0x03
+
struct dasd_uid {
- __u8 alias;
+ __u8 type;
char vendor[4];
char serial[15];
__u16 ssid;
- __u8 unit_addr;
+ __u8 real_unit_addr;
+ __u8 base_unit_addr;
};
/*
@@ -293,14 +322,9 @@ struct dasd_uid {
struct dasd_device {
/* Block device stuff. */
- struct gendisk *gdp;
- struct request_queue *request_queue;
- spinlock_t request_queue_lock;
- struct block_device *bdev;
+ struct dasd_block *block;
+
unsigned int devindex;
- unsigned long blocks; /* size of volume in blocks */
- unsigned int bp_block; /* bytes per block */
- unsigned int s2b_shift; /* log2 (bp_block/512) */
unsigned long flags; /* per device flags */
unsigned short features; /* copy of devmap-features (read-only!) */
@@ -316,9 +340,8 @@ struct dasd_device {
int state, target;
int stopped; /* device (ccw_device_start) was stopped */
- /* Open and reference count. */
+ /* reference count. */
atomic_t ref_count;
- atomic_t open_count;
/* ccw queue and memory for static ccw/erp buffers. */
struct list_head ccw_queue;
@@ -337,20 +360,45 @@ struct dasd_device {
struct ccw_device *cdev;
+ /* hook for alias management */
+ struct list_head alias_list;
+};
+
+struct dasd_block {
+ /* Block device stuff. */
+ struct gendisk *gdp;
+ struct request_queue *request_queue;
+ spinlock_t request_queue_lock;
+ struct block_device *bdev;
+ atomic_t open_count;
+
+ unsigned long blocks; /* size of volume in blocks */
+ unsigned int bp_block; /* bytes per block */
+ unsigned int s2b_shift; /* log2 (bp_block/512) */
+
+ struct dasd_device *base;
+ struct list_head ccw_queue;
+ spinlock_t queue_lock;
+
+ atomic_t tasklet_scheduled;
+ struct tasklet_struct tasklet;
+ struct timer_list timer;
+
#ifdef CONFIG_DASD_PROFILE
struct dasd_profile_info_t profile;
#endif
};
+
+
/* reasons why device (ccw_device_start) was stopped */
#define DASD_STOPPED_NOT_ACC 1 /* not accessible */
#define DASD_STOPPED_QUIESCE 2 /* Quiesced */
#define DASD_STOPPED_PENDING 4 /* long busy */
#define DASD_STOPPED_DC_WAIT 8 /* disconnected, wait */
-#define DASD_STOPPED_DC_EIO 16 /* disconnected, return -EIO */
+#define DASD_STOPPED_SU 16 /* summary unit check handling */
/* per device flags */
-#define DASD_FLAG_DSC_ERROR 2 /* return -EIO when disconnected */
#define DASD_FLAG_OFFLINE 3 /* device is in offline processing */
#define DASD_FLAG_EER_SNSS 4 /* A SNSS is required */
#define DASD_FLAG_EER_IN_USE 5 /* A SNSS request is running */
@@ -489,6 +537,9 @@ dasd_kmalloc_set_cda(struct ccw1 *ccw, void *cda, struct dasd_device *device)
struct dasd_device *dasd_alloc_device(void);
void dasd_free_device(struct dasd_device *);
+struct dasd_block *dasd_alloc_block(void);
+void dasd_free_block(struct dasd_block *);
+
void dasd_enable_device(struct dasd_device *);
void dasd_set_target_state(struct dasd_device *, int);
void dasd_kick_device(struct dasd_device *);
@@ -497,18 +548,23 @@ void dasd_add_request_head(struct dasd_ccw_req *);
void dasd_add_request_tail(struct dasd_ccw_req *);
int dasd_start_IO(struct dasd_ccw_req *);
int dasd_term_IO(struct dasd_ccw_req *);
-void dasd_schedule_bh(struct dasd_device *);
+void dasd_schedule_device_bh(struct dasd_device *);
+void dasd_schedule_block_bh(struct dasd_block *);
int dasd_sleep_on(struct dasd_ccw_req *);
int dasd_sleep_on_immediatly(struct dasd_ccw_req *);
int dasd_sleep_on_interruptible(struct dasd_ccw_req *);
-void dasd_set_timer(struct dasd_device *, int);
-void dasd_clear_timer(struct dasd_device *);
+void dasd_device_set_timer(struct dasd_device *, int);
+void dasd_device_clear_timer(struct dasd_device *);
+void dasd_block_set_timer(struct dasd_block *, int);
+void dasd_block_clear_timer(struct dasd_block *);
int dasd_cancel_req(struct dasd_ccw_req *);
+int dasd_flush_device_queue(struct dasd_device *);
int dasd_generic_probe (struct ccw_device *, struct dasd_discipline *);
void dasd_generic_remove (struct ccw_device *cdev);
int dasd_generic_set_online(struct ccw_device *, struct dasd_discipline *);
int dasd_generic_set_offline (struct ccw_device *cdev);
int dasd_generic_notify(struct ccw_device *, int);
+void dasd_generic_handle_state_change(struct dasd_device *);
int dasd_generic_read_dev_chars(struct dasd_device *, char *, void **, int);
@@ -542,10 +598,10 @@ int dasd_busid_known(char *);
/* externals in dasd_gendisk.c */
int dasd_gendisk_init(void);
void dasd_gendisk_exit(void);
-int dasd_gendisk_alloc(struct dasd_device *);
-void dasd_gendisk_free(struct dasd_device *);
-int dasd_scan_partitions(struct dasd_device *);
-void dasd_destroy_partitions(struct dasd_device *);
+int dasd_gendisk_alloc(struct dasd_block *);
+void dasd_gendisk_free(struct dasd_block *);
+int dasd_scan_partitions(struct dasd_block *);
+void dasd_destroy_partitions(struct dasd_block *);
/* externals in dasd_ioctl.c */
int dasd_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
@@ -563,20 +619,9 @@ struct dasd_ccw_req *dasd_alloc_erp_request(char *, int, int,
void dasd_free_erp_request(struct dasd_ccw_req *, struct dasd_device *);
void dasd_log_sense(struct dasd_ccw_req *, struct irb *);
-/* externals in dasd_3370_erp.c */
-dasd_era_t dasd_3370_erp_examine(struct dasd_ccw_req *, struct irb *);
-
/* externals in dasd_3990_erp.c */
-dasd_era_t dasd_3990_erp_examine(struct dasd_ccw_req *, struct irb *);
struct dasd_ccw_req *dasd_3990_erp_action(struct dasd_ccw_req *);
-/* externals in dasd_9336_erp.c */
-dasd_era_t dasd_9336_erp_examine(struct dasd_ccw_req *, struct irb *);
-
-/* externals in dasd_9336_erp.c */
-dasd_era_t dasd_9343_erp_examine(struct dasd_ccw_req *, struct irb *);
-struct dasd_ccw_req *dasd_9343_erp_action(struct dasd_ccw_req *);
-
/* externals in dasd_eer.c */
#ifdef CONFIG_DASD_EER
int dasd_eer_init(void);
diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c
index 672eb0a3dd0..91a64630cb0 100644
--- a/drivers/s390/block/dasd_ioctl.c
+++ b/drivers/s390/block/dasd_ioctl.c
@@ -38,15 +38,15 @@ dasd_ioctl_api_version(void __user *argp)
static int
dasd_ioctl_enable(struct block_device *bdev)
{
- struct dasd_device *device = bdev->bd_disk->private_data;
+ struct dasd_block *block = bdev->bd_disk->private_data;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
- dasd_enable_device(device);
+ dasd_enable_device(block->base);
/* Formatting the dasd device can change the capacity. */
mutex_lock(&bdev->bd_mutex);
- i_size_write(bdev->bd_inode, (loff_t)get_capacity(device->gdp) << 9);
+ i_size_write(bdev->bd_inode, (loff_t)get_capacity(block->gdp) << 9);
mutex_unlock(&bdev->bd_mutex);
return 0;
}
@@ -58,7 +58,7 @@ dasd_ioctl_enable(struct block_device *bdev)
static int
dasd_ioctl_disable(struct block_device *bdev)
{
- struct dasd_device *device = bdev->bd_disk->private_data;
+ struct dasd_block *block = bdev->bd_disk->private_data;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
@@ -71,7 +71,7 @@ dasd_ioctl_disable(struct block_device *bdev)
* using the BIODASDFMT ioctl. Therefore the correct state for the
* device is DASD_STATE_BASIC that allows to do basic i/o.
*/
- dasd_set_target_state(device, DASD_STATE_BASIC);
+ dasd_set_target_state(block->base, DASD_STATE_BASIC);
/*
* Set i_size to zero, since read, write, etc. check against this
* value.
@@ -85,19 +85,19 @@ dasd_ioctl_disable(struct block_device *bdev)
/*
* Quiesce device.
*/
-static int
-dasd_ioctl_quiesce(struct dasd_device *device)
+static int dasd_ioctl_quiesce(struct dasd_block *block)
{
unsigned long flags;
+ struct dasd_device *base;
+ base = block->base;
if (!capable (CAP_SYS_ADMIN))
return -EACCES;
- DEV_MESSAGE (KERN_DEBUG, device, "%s",
- "Quiesce IO on device");
- spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
- device->stopped |= DASD_STOPPED_QUIESCE;
- spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
+ DEV_MESSAGE(KERN_DEBUG, base, "%s", "Quiesce IO on device");
+ spin_lock_irqsave(get_ccwdev_lock(base->cdev), flags);
+ base->stopped |= DASD_STOPPED_QUIESCE;
+ spin_unlock_irqrestore(get_ccwdev_lock(base->cdev), flags);
return 0;
}
@@ -105,22 +105,21 @@ dasd_ioctl_quiesce(struct dasd_device *device)
/*
* Quiesce device.
*/
-static int
-dasd_ioctl_resume(struct dasd_device *device)
+static int dasd_ioctl_resume(struct dasd_block *block)
{
unsigned long flags;
+ struct dasd_device *base;
+ base = block->base;
if (!capable (CAP_SYS_ADMIN))
return -EACCES;
- DEV_MESSAGE (KERN_DEBUG, device, "%s",
- "resume IO on device");
-
- spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
- device->stopped &= ~DASD_STOPPED_QUIESCE;
- spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
+ DEV_MESSAGE(KERN_DEBUG, base, "%s", "resume IO on device");
+ spin_lock_irqsave(get_ccwdev_lock(base->cdev), flags);
+ base->stopped &= ~DASD_STOPPED_QUIESCE;
+ spin_unlock_irqrestore(get_ccwdev_lock(base->cdev), flags);
- dasd_schedule_bh (device);
+ dasd_schedule_block_bh(block);
return 0;
}
@@ -130,22 +129,23 @@ dasd_ioctl_resume(struct dasd_device *device)
* commands to format a single unit of the device. In terms of the ECKD
* devices this means CCWs are generated to format a single track.
*/
-static int
-dasd_format(struct dasd_device * device, struct format_data_t * fdata)
+static int dasd_format(struct dasd_block *block, struct format_data_t *fdata)
{
struct dasd_ccw_req *cqr;
+ struct dasd_device *base;
int rc;
- if (device->discipline->format_device == NULL)
+ base = block->base;
+ if (base->discipline->format_device == NULL)
return -EPERM;
- if (device->state != DASD_STATE_BASIC) {
- DEV_MESSAGE(KERN_WARNING, device, "%s",
+ if (base->state != DASD_STATE_BASIC) {
+ DEV_MESSAGE(KERN_WARNING, base, "%s",
"dasd_format: device is not disabled! ");
return -EBUSY;
}
- DBF_DEV_EVENT(DBF_NOTICE, device,
+ DBF_DEV_EVENT(DBF_NOTICE, base,
"formatting units %d to %d (%d B blocks) flags %d",
fdata->start_unit,
fdata->stop_unit, fdata->blksize, fdata->intensity);
@@ -156,20 +156,20 @@ dasd_format(struct dasd_device * device, struct format_data_t * fdata)
* enabling the device later.
*/
if (fdata->start_unit == 0) {
- struct block_device *bdev = bdget_disk(device->gdp, 0);
+ struct block_device *bdev = bdget_disk(block->gdp, 0);
bdev->bd_inode->i_blkbits = blksize_bits(fdata->blksize);
bdput(bdev);
}
while (fdata->start_unit <= fdata->stop_unit) {
- cqr = device->discipline->format_device(device, fdata);
+ cqr = base->discipline->format_device(base, fdata);
if (IS_ERR(cqr))
return PTR_ERR(cqr);
rc = dasd_sleep_on_interruptible(cqr);
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
if (rc) {
if (rc != -ERESTARTSYS)
- DEV_MESSAGE(KERN_ERR, device,
+ DEV_MESSAGE(KERN_ERR, base,
" Formatting of unit %d failed "
"with rc = %d",
fdata->start_unit, rc);
@@ -186,7 +186,7 @@ dasd_format(struct dasd_device * device, struct format_data_t * fdata)
static int
dasd_ioctl_format(struct block_device *bdev, void __user *argp)
{
- struct dasd_device *device = bdev->bd_disk->private_data;
+ struct dasd_block *block = bdev->bd_disk->private_data;
struct format_data_t fdata;
if (!capable(CAP_SYS_ADMIN))
@@ -194,51 +194,47 @@ dasd_ioctl_format(struct block_device *bdev, void __user *argp)
if (!argp)
return -EINVAL;
- if (device->features & DASD_FEATURE_READONLY)
+ if (block->base->features & DASD_FEATURE_READONLY)
return -EROFS;
if (copy_from_user(&fdata, argp, sizeof(struct format_data_t)))
return -EFAULT;
if (bdev != bdev->bd_contains) {
- DEV_MESSAGE(KERN_WARNING, device, "%s",
+ DEV_MESSAGE(KERN_WARNING, block->base, "%s",
"Cannot low-level format a partition");
return -EINVAL;
}
- return dasd_format(device, &fdata);
+ return dasd_format(block, &fdata);
}
#ifdef CONFIG_DASD_PROFILE
/*
* Reset device profile information
*/
-static int
-dasd_ioctl_reset_profile(struct dasd_device *device)
+static int dasd_ioctl_reset_profile(struct dasd_block *block)
{
- memset(&device->profile, 0, sizeof (struct dasd_profile_info_t));
+ memset(&block->profile, 0, sizeof(struct dasd_profile_info_t));
return 0;
}
/*
* Return device profile information
*/
-static int
-dasd_ioctl_read_profile(struct dasd_device *device, void __user *argp)
+static int dasd_ioctl_read_profile(struct dasd_block *block, void __user *argp)
{
if (dasd_profile_level == DASD_PROFILE_OFF)
return -EIO;
- if (copy_to_user(argp, &device->profile,
- sizeof (struct dasd_profile_info_t)))
+ if (copy_to_user(argp, &block->profile,
+ sizeof(struct dasd_profile_info_t)))
return -EFAULT;
return 0;
}
#else
-static int
-dasd_ioctl_reset_profile(struct dasd_device *device)
+static int dasd_ioctl_reset_profile(struct dasd_block *block)
{
return -ENOSYS;
}
-static int
-dasd_ioctl_read_profile(struct dasd_device *device, void __user *argp)
+static int dasd_ioctl_read_profile(struct dasd_block *block, void __user *argp)
{
return -ENOSYS;
}
@@ -247,87 +243,88 @@ dasd_ioctl_read_profile(struct dasd_device *device, void __user *argp)
/*
* Return dasd information. Used for BIODASDINFO and BIODASDINFO2.
*/
-static int
-dasd_ioctl_information(struct dasd_device *device,
- unsigned int cmd, void __user *argp)
+static int dasd_ioctl_information(struct dasd_block *block,
+ unsigned int cmd, void __user *argp)
{
struct dasd_information2_t *dasd_info;
unsigned long flags;
int rc;
+ struct dasd_device *base;
struct ccw_device *cdev;
struct ccw_dev_id dev_id;
- if (!device->discipline->fill_info)
+ base = block->base;
+ if (!base->discipline->fill_info)
return -EINVAL;
dasd_info = kzalloc(sizeof(struct dasd_information2_t), GFP_KERNEL);
if (dasd_info == NULL)
return -ENOMEM;
- rc = device->discipline->fill_info(device, dasd_info);
+ rc = base->discipline->fill_info(base, dasd_info);
if (rc) {
kfree(dasd_info);
return rc;
}
- cdev = device->cdev;
+ cdev = base->cdev;
ccw_device_get_id(cdev, &dev_id);
dasd_info->devno = dev_id.devno;
- dasd_info->schid = _ccw_device_get_subchannel_number(device->cdev);
+ dasd_info->schid = _ccw_device_get_subchannel_number(base->cdev);
dasd_info->cu_type = cdev->id.cu_type;
dasd_info->cu_model = cdev->id.cu_model;
dasd_info->dev_type = cdev->id.dev_type;
dasd_info->dev_model = cdev->id.dev_model;
- dasd_info->status = device->state;
+ dasd_info->status = base->state;
/*
* The open_count is increased for every opener, that includes
* the blkdev_get in dasd_scan_partitions.
* This must be hidden from user-space.
*/
- dasd_info->open_count = atomic_read(&device->open_count);
- if (!device->bdev)
+ dasd_info->open_count = atomic_read(&block->open_count);
+ if (!block->bdev)
dasd_info->open_count++;
/*
* check if device is really formatted
* LDL / CDL was returned by 'fill_info'
*/
- if ((device->state < DASD_STATE_READY) ||
- (dasd_check_blocksize(device->bp_block)))
+ if ((base->state < DASD_STATE_READY) ||
+ (dasd_check_blocksize(block->bp_block)))
dasd_info->format = DASD_FORMAT_NONE;
dasd_info->features |=
- ((device->features & DASD_FEATURE_READONLY) != 0);
+ ((base->features & DASD_FEATURE_READONLY) != 0);
- if (device->discipline)
- memcpy(dasd_info->type, device->discipline->name, 4);
+ if (base->discipline)
+ memcpy(dasd_info->type, base->discipline->name, 4);
else
memcpy(dasd_info->type, "none", 4);
- if (device->request_queue->request_fn) {
+ if (block->request_queue->request_fn) {
struct list_head *l;
#ifdef DASD_EXTENDED_PROFILING
{
struct list_head *l;
- spin_lock_irqsave(&device->lock, flags);
- list_for_each(l, &device->request_queue->queue_head)
+ spin_lock_irqsave(&block->lock, flags);
+ list_for_each(l, &block->request_queue->queue_head)
dasd_info->req_queue_len++;
- spin_unlock_irqrestore(&device->lock, flags);
+ spin_unlock_irqrestore(&block->lock, flags);
}
#endif /* DASD_EXTENDED_PROFILING */
- spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
- list_for_each(l, &device->ccw_queue)
+ spin_lock_irqsave(get_ccwdev_lock(base->cdev), flags);
+ list_for_each(l, &base->ccw_queue)
dasd_info->chanq_len++;
- spin_unlock_irqrestore(get_ccwdev_lock(device->cdev),
+ spin_unlock_irqrestore(get_ccwdev_lock(base->cdev),
flags);
}
rc = 0;
if (copy_to_user(argp, dasd_info,
((cmd == (unsigned int) BIODASDINFO2) ?
- sizeof (struct dasd_information2_t) :
- sizeof (struct dasd_information_t))))
+ sizeof(struct dasd_information2_t) :
+ sizeof(struct dasd_information_t))))
rc = -EFAULT;
kfree(dasd_info);
return rc;
@@ -339,7 +336,7 @@ dasd_ioctl_information(struct dasd_device *device,
static int
dasd_ioctl_set_ro(struct block_device *bdev, void __user *argp)
{
- struct dasd_device *device = bdev->bd_disk->private_data;
+ struct dasd_block *block = bdev->bd_disk->private_data;
int intval;
if (!capable(CAP_SYS_ADMIN))
@@ -351,11 +348,10 @@ dasd_ioctl_set_ro(struct block_device *bdev, void __user *argp)
return -EFAULT;
set_disk_ro(bdev->bd_disk, intval);
- return dasd_set_feature(device->cdev, DASD_FEATURE_READONLY, intval);
+ return dasd_set_feature(block->base->cdev, DASD_FEATURE_READONLY, intval);
}
-static int
-dasd_ioctl_readall_cmb(struct dasd_device *device, unsigned int cmd,
+static int dasd_ioctl_readall_cmb(struct dasd_block *block, unsigned int cmd,
unsigned long arg)
{
struct cmbdata __user *argp = (void __user *) arg;
@@ -363,7 +359,7 @@ dasd_ioctl_readall_cmb(struct dasd_device *device, unsigned int cmd,
struct cmbdata data;
int ret;
- ret = cmf_readall(device->cdev, &data);
+ ret = cmf_readall(block->base->cdev, &data);
if (!ret && copy_to_user(argp, &data, min(size, sizeof(*argp))))
return -EFAULT;
return ret;
@@ -374,10 +370,10 @@ dasd_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct block_device *bdev = inode->i_bdev;
- struct dasd_device *device = bdev->bd_disk->private_data;
+ struct dasd_block *block = bdev->bd_disk->private_data;
void __user *argp = (void __user *)arg;
- if (!device)
+ if (!block)
return -ENODEV;
if ((_IOC_DIR(cmd) != _IOC_NONE) && !arg) {
@@ -391,33 +387,33 @@ dasd_ioctl(struct inode *inode, struct file *file,
case BIODASDENABLE:
return dasd_ioctl_enable(bdev);
case BIODASDQUIESCE:
- return dasd_ioctl_quiesce(device);
+ return dasd_ioctl_quiesce(block);
case BIODASDRESUME:
- return dasd_ioctl_resume(device);
+ return dasd_ioctl_resume(block);
case BIODASDFMT:
return dasd_ioctl_format(bdev, argp);
case BIODASDINFO:
- return dasd_ioctl_information(device, cmd, argp);
+ return dasd_ioctl_information(block, cmd, argp);
case BIODASDINFO2:
- return dasd_ioctl_information(device, cmd, argp);
+ return dasd_ioctl_information(block, cmd, argp);
case BIODASDPRRD:
- return dasd_ioctl_read_profile(device, argp);
+ return dasd_ioctl_read_profile(block, argp);
case BIODASDPRRST:
- return dasd_ioctl_reset_profile(device);
+ return dasd_ioctl_reset_profile(block);
case BLKROSET:
return dasd_ioctl_set_ro(bdev, argp);
case DASDAPIVER:
return dasd_ioctl_api_version(argp);
case BIODASDCMFENABLE:
- return enable_cmf(device->cdev);
+ return enable_cmf(block->base->cdev);
case BIODASDCMFDISABLE:
- return disable_cmf(device->cdev);
+ return disable_cmf(block->base->cdev);
case BIODASDREADALLCMB:
- return dasd_ioctl_readall_cmb(device, cmd, arg);
+ return dasd_ioctl_readall_cmb(block, cmd, arg);
default:
/* if the discipline has an ioctl method try it. */
- if (device->discipline->ioctl) {
- int rval = device->discipline->ioctl(device, cmd, argp);
+ if (block->base->discipline->ioctl) {
+ int rval = block->base->discipline->ioctl(block, cmd, argp);
if (rval != -ENOIOCTLCMD)
return rval;
}
diff --git a/drivers/s390/block/dasd_proc.c b/drivers/s390/block/dasd_proc.c
index ac7e8ef504c..28a86f07004 100644
--- a/drivers/s390/block/dasd_proc.c
+++ b/drivers/s390/block/dasd_proc.c
@@ -54,11 +54,16 @@ static int
dasd_devices_show(struct seq_file *m, void *v)
{
struct dasd_device *device;
+ struct dasd_block *block;
char *substr;
device = dasd_device_from_devindex((unsigned long) v - 1);
if (IS_ERR(device))
return 0;
+ if (device->block)
+ block = device->block;
+ else
+ return 0;
/* Print device number. */
seq_printf(m, "%s", device->cdev->dev.bus_id);
/* Print discipline string. */
@@ -67,14 +72,14 @@ dasd_devices_show(struct seq_file *m, void *v)
else
seq_printf(m, "(none)");
/* Print kdev. */
- if (device->gdp)
+ if (block->gdp)
seq_printf(m, " at (%3d:%6d)",
- device->gdp->major, device->gdp->first_minor);
+ block->gdp->major, block->gdp->first_minor);
else
seq_printf(m, " at (???:??????)");
/* Print device name. */
- if (device->gdp)
- seq_printf(m, " is %-8s", device->gdp->disk_name);
+ if (block->gdp)
+ seq_printf(m, " is %-8s", block->gdp->disk_name);
else
seq_printf(m, " is ????????");
/* Print devices features. */
@@ -100,14 +105,14 @@ dasd_devices_show(struct seq_file *m, void *v)
case DASD_STATE_READY:
case DASD_STATE_ONLINE:
seq_printf(m, "active ");
- if (dasd_check_blocksize(device->bp_block))
+ if (dasd_check_blocksize(block->bp_block))
seq_printf(m, "n/f ");
else
seq_printf(m,
"at blocksize: %d, %ld blocks, %ld MB",
- device->bp_block, device->blocks,
- ((device->bp_block >> 9) *
- device->blocks) >> 11);
+ block->bp_block, block->blocks,
+ ((block->bp_block >> 9) *
+ block->blocks) >> 11);
break;
default:
seq_printf(m, "no stat");
@@ -137,7 +142,7 @@ static void dasd_devices_stop(struct seq_file *m, void *v)
{
}
-static struct seq_operations dasd_devices_seq_ops = {
+static const struct seq_operations dasd_devices_seq_ops = {
.start = dasd_devices_start,
.next = dasd_devices_next,
.stop = dasd_devices_stop,
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 15a5789b773..7779bfce1c3 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -82,7 +82,7 @@ struct dcssblk_dev_info {
struct request_queue *dcssblk_queue;
};
-static struct list_head dcssblk_devices = LIST_HEAD_INIT(dcssblk_devices);
+static LIST_HEAD(dcssblk_devices);
static struct rw_semaphore dcssblk_devices_sem;
/*
diff --git a/drivers/s390/char/Makefile b/drivers/s390/char/Makefile
index 130de19916f..7e73e39a174 100644
--- a/drivers/s390/char/Makefile
+++ b/drivers/s390/char/Makefile
@@ -3,7 +3,7 @@
#
obj-y += ctrlchar.o keyboard.o defkeymap.o sclp.o sclp_rw.o sclp_quiesce.o \
- sclp_info.o sclp_config.o sclp_chp.o
+ sclp_cmd.o sclp_config.o sclp_cpi_sys.o
obj-$(CONFIG_TN3270) += raw3270.o
obj-$(CONFIG_TN3270_CONSOLE) += con3270.o
diff --git a/drivers/s390/char/monwriter.c b/drivers/s390/char/monwriter.c
index 20442fbf934..a86c0534cd4 100644
--- a/drivers/s390/char/monwriter.c
+++ b/drivers/s390/char/monwriter.c
@@ -295,7 +295,7 @@ module_init(mon_init);
module_exit(mon_exit);
module_param_named(max_bufs, mon_max_bufs, int, 0644);
-MODULE_PARM_DESC(max_bufs, "Maximum number of sample monitor data buffers"
+MODULE_PARM_DESC(max_bufs, "Maximum number of sample monitor data buffers "
"that can be active at one time");
MODULE_AUTHOR("Melissa Howland <Melissa.Howland@us.ibm.com>");
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index 8d1c64a24de..0d98f1ff2ed 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -66,7 +66,7 @@ struct raw3270 {
static DEFINE_MUTEX(raw3270_mutex);
/* List of 3270 devices. */
-static struct list_head raw3270_devices = LIST_HEAD_INIT(raw3270_devices);
+static LIST_HEAD(raw3270_devices);
/*
* Flag to indicate if the driver has been registered. Some operations
@@ -1210,7 +1210,7 @@ struct raw3270_notifier {
void (*notifier)(int, int);
};
-static struct list_head raw3270_notifier = LIST_HEAD_INIT(raw3270_notifier);
+static LIST_HEAD(raw3270_notifier);
int raw3270_register_notifier(void (*notifier)(int, int))
{
diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h
index c7318a12585..aa8186d18ae 100644
--- a/drivers/s390/char/sclp.h
+++ b/drivers/s390/char/sclp.h
@@ -56,8 +56,6 @@ typedef unsigned int sclp_cmdw_t;
#define SCLP_CMDW_READ_EVENT_DATA 0x00770005
#define SCLP_CMDW_WRITE_EVENT_DATA 0x00760005
#define SCLP_CMDW_WRITE_EVENT_MASK 0x00780005
-#define SCLP_CMDW_READ_SCP_INFO 0x00020001
-#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001
#define GDS_ID_MDSMU 0x1310
#define GDS_ID_MDSROUTEINFO 0x1311
@@ -83,6 +81,8 @@ extern u64 sclp_facilities;
#define SCLP_HAS_CHP_INFO (sclp_facilities & 0x8000000000000000ULL)
#define SCLP_HAS_CHP_RECONFIG (sclp_facilities & 0x2000000000000000ULL)
+#define SCLP_HAS_CPU_INFO (sclp_facilities & 0x0800000000000000ULL)
+#define SCLP_HAS_CPU_RECONFIG (sclp_facilities & 0x0400000000000000ULL)
struct gds_subvector {
u8 length;
diff --git a/drivers/s390/char/sclp_chp.c b/drivers/s390/char/sclp_chp.c
deleted file mode 100644
index c68f5e7e63a..00000000000
--- a/drivers/s390/char/sclp_chp.c
+++ /dev/null
@@ -1,200 +0,0 @@
-/*
- * drivers/s390/char/sclp_chp.c
- *
- * Copyright IBM Corp. 2007
- * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
- */
-
-#include <linux/types.h>
-#include <linux/gfp.h>
-#include <linux/errno.h>
-#include <linux/completion.h>
-#include <asm/sclp.h>
-#include <asm/chpid.h>
-
-#include "sclp.h"
-
-#define TAG "sclp_chp: "
-
-#define SCLP_CMDW_CONFIGURE_CHANNEL_PATH 0x000f0001
-#define SCLP_CMDW_DECONFIGURE_CHANNEL_PATH 0x000e0001
-#define SCLP_CMDW_READ_CHANNEL_PATH_INFORMATION 0x00030001
-
-static inline sclp_cmdw_t get_configure_cmdw(struct chp_id chpid)
-{
- return SCLP_CMDW_CONFIGURE_CHANNEL_PATH | chpid.id << 8;
-}
-
-static inline sclp_cmdw_t get_deconfigure_cmdw(struct chp_id chpid)
-{
- return SCLP_CMDW_DECONFIGURE_CHANNEL_PATH | chpid.id << 8;
-}
-
-static void chp_callback(struct sclp_req *req, void *data)
-{
- struct completion *completion = data;
-
- complete(completion);
-}
-
-struct chp_cfg_sccb {
- struct sccb_header header;
- u8 ccm;
- u8 reserved[6];
- u8 cssid;
-} __attribute__((packed));
-
-struct chp_cfg_data {
- struct chp_cfg_sccb sccb;
- struct sclp_req req;
- struct completion completion;
-} __attribute__((packed));
-
-static int do_configure(sclp_cmdw_t cmd)
-{
- struct chp_cfg_data *data;
- int rc;
-
- if (!SCLP_HAS_CHP_RECONFIG)
- return -EOPNOTSUPP;
- /* Prepare sccb. */
- data = (struct chp_cfg_data *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
- if (!data)
- return -ENOMEM;
- data->sccb.header.length = sizeof(struct chp_cfg_sccb);
- data->req.command = cmd;
- data->req.sccb = &(data->sccb);
- data->req.status = SCLP_REQ_FILLED;
- data->req.callback = chp_callback;
- data->req.callback_data = &(data->completion);
- init_completion(&data->completion);
-
- /* Perform sclp request. */
- rc = sclp_add_request(&(data->req));
- if (rc)
- goto out;
- wait_for_completion(&data->completion);
-
- /* Check response .*/
- if (data->req.status != SCLP_REQ_DONE) {
- printk(KERN_WARNING TAG "configure channel-path request failed "
- "(status=0x%02x)\n", data->req.status);
- rc = -EIO;
- goto out;
- }
- switch (data->sccb.header.response_code) {
- case 0x0020:
- case 0x0120:
- case 0x0440:
- case 0x0450:
- break;
- default:
- printk(KERN_WARNING TAG "configure channel-path failed "
- "(cmd=0x%08x, response=0x%04x)\n", cmd,
- data->sccb.header.response_code);
- rc = -EIO;
- break;
- }
-out:
- free_page((unsigned long) data);
-
- return rc;
-}
-
-/**
- * sclp_chp_configure - perform configure channel-path sclp command
- * @chpid: channel-path ID
- *
- * Perform configure channel-path command sclp command for specified chpid.
- * Return 0 after command successfully finished, non-zero otherwise.
- */
-int sclp_chp_configure(struct chp_id chpid)
-{
- return do_configure(get_configure_cmdw(chpid));
-}
-
-/**
- * sclp_chp_deconfigure - perform deconfigure channel-path sclp command
- * @chpid: channel-path ID
- *
- * Perform deconfigure channel-path command sclp command for specified chpid
- * and wait for completion. On success return 0. Return non-zero otherwise.
- */
-int sclp_chp_deconfigure(struct chp_id chpid)
-{
- return do_configure(get_deconfigure_cmdw(chpid));
-}
-
-struct chp_info_sccb {
- struct sccb_header header;
- u8 recognized[SCLP_CHP_INFO_MASK_SIZE];
- u8 standby[SCLP_CHP_INFO_MASK_SIZE];
- u8 configured[SCLP_CHP_INFO_MASK_SIZE];
- u8 ccm;
- u8 reserved[6];
- u8 cssid;
-} __attribute__((packed));
-
-struct chp_info_data {
- struct chp_info_sccb sccb;
- struct sclp_req req;
- struct completion completion;
-} __attribute__((packed));
-
-/**
- * sclp_chp_read_info - perform read channel-path information sclp command
- * @info: resulting channel-path information data
- *
- * Perform read channel-path information sclp command and wait for completion.
- * On success, store channel-path information in @info and return 0. Return
- * non-zero otherwise.
- */
-int sclp_chp_read_info(struct sclp_chp_info *info)
-{
- struct chp_info_data *data;
- int rc;
-
- if (!SCLP_HAS_CHP_INFO)
- return -EOPNOTSUPP;
- /* Prepare sccb. */
- data = (struct chp_info_data *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
- if (!data)
- return -ENOMEM;
- data->sccb.header.length = sizeof(struct chp_info_sccb);
- data->req.command = SCLP_CMDW_READ_CHANNEL_PATH_INFORMATION;
- data->req.sccb = &(data->sccb);
- data->req.status = SCLP_REQ_FILLED;
- data->req.callback = chp_callback;
- data->req.callback_data = &(data->completion);
- init_completion(&data->completion);
-
- /* Perform sclp request. */
- rc = sclp_add_request(&(data->req));
- if (rc)
- goto out;
- wait_for_completion(&data->completion);
-
- /* Check response .*/
- if (data->req.status != SCLP_REQ_DONE) {
- printk(KERN_WARNING TAG "read channel-path info request failed "
- "(status=0x%02x)\n", data->req.status);
- rc = -EIO;
- goto out;
- }
- if (data->sccb.header.response_code != 0x0010) {
- printk(KERN_WARNING TAG "read channel-path info failed "
- "(response=0x%04x)\n", data->sccb.header.response_code);
- rc = -EIO;
- goto out;
- }
- memcpy(info->recognized, data->sccb.recognized,
- SCLP_CHP_INFO_MASK_SIZE);
- memcpy(info->standby, data->sccb.standby,
- SCLP_CHP_INFO_MASK_SIZE);
- memcpy(info->configured, data->sccb.configured,
- SCLP_CHP_INFO_MASK_SIZE);
-out:
- free_page((unsigned long) data);
-
- return rc;
-}
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
new file mode 100644
index 00000000000..b5c23396f8f
--- /dev/null
+++ b/drivers/s390/char/sclp_cmd.c
@@ -0,0 +1,398 @@
+/*
+ * drivers/s390/char/sclp_cmd.c
+ *
+ * Copyright IBM Corp. 2007
+ * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>,
+ * Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
+ */
+
+#include <linux/completion.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <asm/chpid.h>
+#include <asm/sclp.h>
+#include "sclp.h"
+
+#define TAG "sclp_cmd: "
+
+#define SCLP_CMDW_READ_SCP_INFO 0x00020001
+#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001
+
+struct read_info_sccb {
+ struct sccb_header header; /* 0-7 */
+ u16 rnmax; /* 8-9 */
+ u8 rnsize; /* 10 */
+ u8 _reserved0[24 - 11]; /* 11-15 */
+ u8 loadparm[8]; /* 24-31 */
+ u8 _reserved1[48 - 32]; /* 32-47 */
+ u64 facilities; /* 48-55 */
+ u8 _reserved2[84 - 56]; /* 56-83 */
+ u8 fac84; /* 84 */
+ u8 _reserved3[91 - 85]; /* 85-90 */
+ u8 flags; /* 91 */
+ u8 _reserved4[100 - 92]; /* 92-99 */
+ u32 rnsize2; /* 100-103 */
+ u64 rnmax2; /* 104-111 */
+ u8 _reserved5[4096 - 112]; /* 112-4095 */
+} __attribute__((packed, aligned(PAGE_SIZE)));
+
+static struct read_info_sccb __initdata early_read_info_sccb;
+static int __initdata early_read_info_sccb_valid;
+
+u64 sclp_facilities;
+static u8 sclp_fac84;
+
+static int __init sclp_cmd_sync_early(sclp_cmdw_t cmd, void *sccb)
+{
+ int rc;
+
+ __ctl_set_bit(0, 9);
+ rc = sclp_service_call(cmd, sccb);
+ if (rc)
+ goto out;
+ __load_psw_mask(PSW_BASE_BITS | PSW_MASK_EXT |
+ PSW_MASK_WAIT | PSW_DEFAULT_KEY);
+ local_irq_disable();
+out:
+ /* Contents of the sccb might have changed. */
+ barrier();
+ __ctl_clear_bit(0, 9);
+ return rc;
+}
+
+void __init sclp_read_info_early(void)
+{
+ int rc;
+ int i;
+ struct read_info_sccb *sccb;
+ sclp_cmdw_t commands[] = {SCLP_CMDW_READ_SCP_INFO_FORCED,
+ SCLP_CMDW_READ_SCP_INFO};
+
+ sccb = &early_read_info_sccb;
+ for (i = 0; i < ARRAY_SIZE(commands); i++) {
+ do {
+ memset(sccb, 0, sizeof(*sccb));
+ sccb->header.length = sizeof(*sccb);
+ sccb->header.control_mask[2] = 0x80;
+ rc = sclp_cmd_sync_early(commands[i], sccb);
+ } while (rc == -EBUSY);
+
+ if (rc)
+ break;
+ if (sccb->header.response_code == 0x10) {
+ early_read_info_sccb_valid = 1;
+ break;
+ }
+ if (sccb->header.response_code != 0x1f0)
+ break;
+ }
+}
+
+void __init sclp_facilities_detect(void)
+{
+ if (!early_read_info_sccb_valid)
+ return;
+ sclp_facilities = early_read_info_sccb.facilities;
+ sclp_fac84 = early_read_info_sccb.fac84;
+}
+
+unsigned long long __init sclp_memory_detect(void)
+{
+ unsigned long long memsize;
+ struct read_info_sccb *sccb;
+
+ if (!early_read_info_sccb_valid)
+ return 0;
+ sccb = &early_read_info_sccb;
+ if (sccb->rnsize)
+ memsize = sccb->rnsize << 20;
+ else
+ memsize = sccb->rnsize2 << 20;
+ if (sccb->rnmax)
+ memsize *= sccb->rnmax;
+ else
+ memsize *= sccb->rnmax2;
+ return memsize;
+}
+
+/*
+ * This function will be called after sclp_memory_detect(), which gets called
+ * early from early.c code. Therefore the sccb should have valid contents.
+ */
+void __init sclp_get_ipl_info(struct sclp_ipl_info *info)
+{
+ struct read_info_sccb *sccb;
+
+ if (!early_read_info_sccb_valid)
+ return;
+ sccb = &early_read_info_sccb;
+ info->is_valid = 1;
+ if (sccb->flags & 0x2)
+ info->has_dump = 1;
+ memcpy(&info->loadparm, &sccb->loadparm, LOADPARM_LEN);
+}
+
+static void sclp_sync_callback(struct sclp_req *req, void *data)
+{
+ struct completion *completion = data;
+
+ complete(completion);
+}
+
+static int do_sync_request(sclp_cmdw_t cmd, void *sccb)
+{
+ struct completion completion;
+ struct sclp_req *request;
+ int rc;
+
+ request = kzalloc(sizeof(*request), GFP_KERNEL);
+ if (!request)
+ return -ENOMEM;
+ request->command = cmd;
+ request->sccb = sccb;
+ request->status = SCLP_REQ_FILLED;
+ request->callback = sclp_sync_callback;
+ request->callback_data = &completion;
+ init_completion(&completion);
+
+ /* Perform sclp request. */
+ rc = sclp_add_request(request);
+ if (rc)
+ goto out;
+ wait_for_completion(&completion);
+
+ /* Check response. */
+ if (request->status != SCLP_REQ_DONE) {
+ printk(KERN_WARNING TAG "sync request failed "
+ "(cmd=0x%08x, status=0x%02x)\n", cmd, request->status);
+ rc = -EIO;
+ }
+out:
+ kfree(request);
+ return rc;
+}
+
+/*
+ * CPU configuration related functions.
+ */
+
+#define SCLP_CMDW_READ_CPU_INFO 0x00010001
+#define SCLP_CMDW_CONFIGURE_CPU 0x00110001
+#define SCLP_CMDW_DECONFIGURE_CPU 0x00100001
+
+struct read_cpu_info_sccb {
+ struct sccb_header header;
+ u16 nr_configured;
+ u16 offset_configured;
+ u16 nr_standby;
+ u16 offset_standby;
+ u8 reserved[4096 - 16];
+} __attribute__((packed, aligned(PAGE_SIZE)));
+
+static void sclp_fill_cpu_info(struct sclp_cpu_info *info,
+ struct read_cpu_info_sccb *sccb)
+{
+ char *page = (char *) sccb;
+
+ memset(info, 0, sizeof(*info));
+ info->configured = sccb->nr_configured;
+ info->standby = sccb->nr_standby;
+ info->combined = sccb->nr_configured + sccb->nr_standby;
+ info->has_cpu_type = sclp_fac84 & 0x1;
+ memcpy(&info->cpu, page + sccb->offset_configured,
+ info->combined * sizeof(struct sclp_cpu_entry));
+}
+
+int sclp_get_cpu_info(struct sclp_cpu_info *info)
+{
+ int rc;
+ struct read_cpu_info_sccb *sccb;
+
+ if (!SCLP_HAS_CPU_INFO)
+ return -EOPNOTSUPP;
+ sccb = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ if (!sccb)
+ return -ENOMEM;
+ sccb->header.length = sizeof(*sccb);
+ rc = do_sync_request(SCLP_CMDW_READ_CPU_INFO, sccb);
+ if (rc)
+ goto out;
+ if (sccb->header.response_code != 0x0010) {
+ printk(KERN_WARNING TAG "readcpuinfo failed "
+ "(response=0x%04x)\n", sccb->header.response_code);
+ rc = -EIO;
+ goto out;
+ }
+ sclp_fill_cpu_info(info, sccb);
+out:
+ free_page((unsigned long) sccb);
+ return rc;
+}
+
+struct cpu_configure_sccb {
+ struct sccb_header header;
+} __attribute__((packed, aligned(8)));
+
+static int do_cpu_configure(sclp_cmdw_t cmd)
+{
+ struct cpu_configure_sccb *sccb;
+ int rc;
+
+ if (!SCLP_HAS_CPU_RECONFIG)
+ return -EOPNOTSUPP;
+ /*
+ * This is not going to cross a page boundary since we force
+ * kmalloc to have a minimum alignment of 8 bytes on s390.
+ */
+ sccb = kzalloc(sizeof(*sccb), GFP_KERNEL | GFP_DMA);
+ if (!sccb)
+ return -ENOMEM;
+ sccb->header.length = sizeof(*sccb);
+ rc = do_sync_request(cmd, sccb);
+ if (rc)
+ goto out;
+ switch (sccb->header.response_code) {
+ case 0x0020:
+ case 0x0120:
+ break;
+ default:
+ printk(KERN_WARNING TAG "configure cpu failed (cmd=0x%08x, "
+ "response=0x%04x)\n", cmd, sccb->header.response_code);
+ rc = -EIO;
+ break;
+ }
+out:
+ kfree(sccb);
+ return rc;
+}
+
+int sclp_cpu_configure(u8 cpu)
+{
+ return do_cpu_configure(SCLP_CMDW_CONFIGURE_CPU | cpu << 8);
+}
+
+int sclp_cpu_deconfigure(u8 cpu)
+{
+ return do_cpu_configure(SCLP_CMDW_DECONFIGURE_CPU | cpu << 8);
+}
+
+/*
+ * Channel path configuration related functions.
+ */
+
+#define SCLP_CMDW_CONFIGURE_CHPATH 0x000f0001
+#define SCLP_CMDW_DECONFIGURE_CHPATH 0x000e0001
+#define SCLP_CMDW_READ_CHPATH_INFORMATION 0x00030001
+
+struct chp_cfg_sccb {
+ struct sccb_header header;
+ u8 ccm;
+ u8 reserved[6];
+ u8 cssid;
+} __attribute__((packed));
+
+static int do_chp_configure(sclp_cmdw_t cmd)
+{
+ struct chp_cfg_sccb *sccb;
+ int rc;
+
+ if (!SCLP_HAS_CHP_RECONFIG)
+ return -EOPNOTSUPP;
+ /* Prepare sccb. */
+ sccb = (struct chp_cfg_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ if (!sccb)
+ return -ENOMEM;
+ sccb->header.length = sizeof(*sccb);
+ rc = do_sync_request(cmd, sccb);
+ if (rc)
+ goto out;
+ switch (sccb->header.response_code) {
+ case 0x0020:
+ case 0x0120:
+ case 0x0440:
+ case 0x0450:
+ break;
+ default:
+ printk(KERN_WARNING TAG "configure channel-path failed "
+ "(cmd=0x%08x, response=0x%04x)\n", cmd,
+ sccb->header.response_code);
+ rc = -EIO;
+ break;
+ }
+out:
+ free_page((unsigned long) sccb);
+ return rc;
+}
+
+/**
+ * sclp_chp_configure - perform configure channel-path sclp command
+ * @chpid: channel-path ID
+ *
+ * Perform configure channel-path command sclp command for specified chpid.
+ * Return 0 after command successfully finished, non-zero otherwise.
+ */
+int sclp_chp_configure(struct chp_id chpid)
+{
+ return do_chp_configure(SCLP_CMDW_CONFIGURE_CHPATH | chpid.id << 8);
+}
+
+/**
+ * sclp_chp_deconfigure - perform deconfigure channel-path sclp command
+ * @chpid: channel-path ID
+ *
+ * Perform deconfigure channel-path command sclp command for specified chpid
+ * and wait for completion. On success return 0. Return non-zero otherwise.
+ */
+int sclp_chp_deconfigure(struct chp_id chpid)
+{
+ return do_chp_configure(SCLP_CMDW_DECONFIGURE_CHPATH | chpid.id << 8);
+}
+
+struct chp_info_sccb {
+ struct sccb_header header;
+ u8 recognized[SCLP_CHP_INFO_MASK_SIZE];
+ u8 standby[SCLP_CHP_INFO_MASK_SIZE];
+ u8 configured[SCLP_CHP_INFO_MASK_SIZE];
+ u8 ccm;
+ u8 reserved[6];
+ u8 cssid;
+} __attribute__((packed));
+
+/**
+ * sclp_chp_read_info - perform read channel-path information sclp command
+ * @info: resulting channel-path information data
+ *
+ * Perform read channel-path information sclp command and wait for completion.
+ * On success, store channel-path information in @info and return 0. Return
+ * non-zero otherwise.
+ */
+int sclp_chp_read_info(struct sclp_chp_info *info)
+{
+ struct chp_info_sccb *sccb;
+ int rc;
+
+ if (!SCLP_HAS_CHP_INFO)
+ return -EOPNOTSUPP;
+ /* Prepare sccb. */
+ sccb = (struct chp_info_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ if (!sccb)
+ return -ENOMEM;
+ sccb->header.length = sizeof(*sccb);
+ rc = do_sync_request(SCLP_CMDW_READ_CHPATH_INFORMATION, sccb);
+ if (rc)
+ goto out;
+ if (sccb->header.response_code != 0x0010) {
+ printk(KERN_WARNING TAG "read channel-path info failed "
+ "(response=0x%04x)\n", sccb->header.response_code);
+ rc = -EIO;
+ goto out;
+ }
+ memcpy(info->recognized, sccb->recognized, SCLP_CHP_INFO_MASK_SIZE);
+ memcpy(info->standby, sccb->standby, SCLP_CHP_INFO_MASK_SIZE);
+ memcpy(info->configured, sccb->configured, SCLP_CHP_INFO_MASK_SIZE);
+out:
+ free_page((unsigned long) sccb);
+ return rc;
+}
diff --git a/drivers/s390/char/sclp_cpi.c b/drivers/s390/char/sclp_cpi.c
index 82a13d9fdfe..5716487b8c9 100644
--- a/drivers/s390/char/sclp_cpi.c
+++ b/drivers/s390/char/sclp_cpi.c
@@ -1,255 +1,41 @@
/*
- * Author: Martin Peschke <mpeschke@de.ibm.com>
- * Copyright (C) 2001 IBM Entwicklung GmbH, IBM Corporation
+ * drivers/s390/char/sclp_cpi.c
+ * SCLP control programm identification
*
- * SCLP Control-Program Identification.
+ * Copyright IBM Corp. 2001, 2007
+ * Author(s): Martin Peschke <mpeschke@de.ibm.com>
+ * Michael Ernst <mernst@de.ibm.com>
*/
-#include <linux/version.h>
#include <linux/kmod.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
-#include <linux/init.h>
-#include <linux/timer.h>
-#include <linux/string.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <asm/ebcdic.h>
-#include <asm/semaphore.h>
-
-#include "sclp.h"
-#include "sclp_rw.h"
-
-#define CPI_LENGTH_SYSTEM_TYPE 8
-#define CPI_LENGTH_SYSTEM_NAME 8
-#define CPI_LENGTH_SYSPLEX_NAME 8
-
-struct cpi_evbuf {
- struct evbuf_header header;
- u8 id_format;
- u8 reserved0;
- u8 system_type[CPI_LENGTH_SYSTEM_TYPE];
- u64 reserved1;
- u8 system_name[CPI_LENGTH_SYSTEM_NAME];
- u64 reserved2;
- u64 system_level;
- u64 reserved3;
- u8 sysplex_name[CPI_LENGTH_SYSPLEX_NAME];
- u8 reserved4[16];
-} __attribute__((packed));
-
-struct cpi_sccb {
- struct sccb_header header;
- struct cpi_evbuf cpi_evbuf;
-} __attribute__((packed));
-
-/* Event type structure for write message and write priority message */
-static struct sclp_register sclp_cpi_event =
-{
- .send_mask = EVTYP_CTLPROGIDENT_MASK
-};
+#include <linux/version.h>
+#include "sclp_cpi_sys.h"
MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Identify this operating system instance "
+ "to the System z hardware");
+MODULE_AUTHOR("Martin Peschke <mpeschke@de.ibm.com>, "
+ "Michael Ernst <mernst@de.ibm.com>");
-MODULE_AUTHOR(
- "Martin Peschke, IBM Deutschland Entwicklung GmbH "
- "<mpeschke@de.ibm.com>");
-
-MODULE_DESCRIPTION(
- "identify this operating system instance to the S/390 "
- "or zSeries hardware");
+static char *system_name = "";
+static char *sysplex_name = "";
-static char *system_name = NULL;
module_param(system_name, charp, 0);
MODULE_PARM_DESC(system_name, "e.g. hostname - max. 8 characters");
-
-static char *sysplex_name = NULL;
-#ifdef ALLOW_SYSPLEX_NAME
module_param(sysplex_name, charp, 0);
MODULE_PARM_DESC(sysplex_name, "if applicable - max. 8 characters");
-#endif
-
-/* use default value for this field (as well as for system level) */
-static char *system_type = "LINUX";
-static int
-cpi_check_parms(void)
+static int __init cpi_module_init(void)
{
- /* reject if no system type specified */
- if (!system_type) {
- printk("cpi: bug: no system type specified\n");
- return -EINVAL;
- }
-
- /* reject if system type larger than 8 characters */
- if (strlen(system_type) > CPI_LENGTH_SYSTEM_NAME) {
- printk("cpi: bug: system type has length of %li characters - "
- "only %i characters supported\n",
- strlen(system_type), CPI_LENGTH_SYSTEM_TYPE);
- return -EINVAL;
- }
-
- /* reject if no system name specified */
- if (!system_name) {
- printk("cpi: no system name specified\n");
- return -EINVAL;
- }
-
- /* reject if system name larger than 8 characters */
- if (strlen(system_name) > CPI_LENGTH_SYSTEM_NAME) {
- printk("cpi: system name has length of %li characters - "
- "only %i characters supported\n",
- strlen(system_name), CPI_LENGTH_SYSTEM_NAME);
- return -EINVAL;
- }
-
- /* reject if specified sysplex name larger than 8 characters */
- if (sysplex_name && strlen(sysplex_name) > CPI_LENGTH_SYSPLEX_NAME) {
- printk("cpi: sysplex name has length of %li characters"
- " - only %i characters supported\n",
- strlen(sysplex_name), CPI_LENGTH_SYSPLEX_NAME);
- return -EINVAL;
- }
- return 0;
+ return sclp_cpi_set_data(system_name, sysplex_name, "LINUX",
+ LINUX_VERSION_CODE);
}
-static void
-cpi_callback(struct sclp_req *req, void *data)
-{
- struct semaphore *sem;
-
- sem = (struct semaphore *) data;
- up(sem);
-}
-
-static struct sclp_req *
-cpi_prepare_req(void)
-{
- struct sclp_req *req;
- struct cpi_sccb *sccb;
- struct cpi_evbuf *evb;
-
- req = kmalloc(sizeof(struct sclp_req), GFP_KERNEL);
- if (req == NULL)
- return ERR_PTR(-ENOMEM);
- sccb = (struct cpi_sccb *) __get_free_page(GFP_KERNEL | GFP_DMA);
- if (sccb == NULL) {
- kfree(req);
- return ERR_PTR(-ENOMEM);
- }
- memset(sccb, 0, sizeof(struct cpi_sccb));
-
- /* setup SCCB for Control-Program Identification */
- sccb->header.length = sizeof(struct cpi_sccb);
- sccb->cpi_evbuf.header.length = sizeof(struct cpi_evbuf);
- sccb->cpi_evbuf.header.type = 0x0B;
- evb = &sccb->cpi_evbuf;
-
- /* set system type */
- memset(evb->system_type, ' ', CPI_LENGTH_SYSTEM_TYPE);
- memcpy(evb->system_type, system_type, strlen(system_type));
- sclp_ascebc_str(evb->system_type, CPI_LENGTH_SYSTEM_TYPE);
- EBC_TOUPPER(evb->system_type, CPI_LENGTH_SYSTEM_TYPE);
-
- /* set system name */
- memset(evb->system_name, ' ', CPI_LENGTH_SYSTEM_NAME);
- memcpy(evb->system_name, system_name, strlen(system_name));
- sclp_ascebc_str(evb->system_name, CPI_LENGTH_SYSTEM_NAME);
- EBC_TOUPPER(evb->system_name, CPI_LENGTH_SYSTEM_NAME);
-
- /* set system level */
- evb->system_level = LINUX_VERSION_CODE;
-
- /* set sysplex name */
- if (sysplex_name) {
- memset(evb->sysplex_name, ' ', CPI_LENGTH_SYSPLEX_NAME);
- memcpy(evb->sysplex_name, sysplex_name, strlen(sysplex_name));
- sclp_ascebc_str(evb->sysplex_name, CPI_LENGTH_SYSPLEX_NAME);
- EBC_TOUPPER(evb->sysplex_name, CPI_LENGTH_SYSPLEX_NAME);
- }
-
- /* prepare request data structure presented to SCLP driver */
- req->command = SCLP_CMDW_WRITE_EVENT_DATA;
- req->sccb = sccb;
- req->status = SCLP_REQ_FILLED;
- req->callback = cpi_callback;
- return req;
-}
-
-static void
-cpi_free_req(struct sclp_req *req)
-{
- free_page((unsigned long) req->sccb);
- kfree(req);
-}
-
-static int __init
-cpi_module_init(void)
-{
- struct semaphore sem;
- struct sclp_req *req;
- int rc;
-
- rc = cpi_check_parms();
- if (rc)
- return rc;
-
- rc = sclp_register(&sclp_cpi_event);
- if (rc) {
- /* could not register sclp event. Die. */
- printk(KERN_WARNING "cpi: could not register to hardware "
- "console.\n");
- return -EINVAL;
- }
- if (!(sclp_cpi_event.sclp_send_mask & EVTYP_CTLPROGIDENT_MASK)) {
- printk(KERN_WARNING "cpi: no control program identification "
- "support\n");
- sclp_unregister(&sclp_cpi_event);
- return -EOPNOTSUPP;
- }
-
- req = cpi_prepare_req();
- if (IS_ERR(req)) {
- printk(KERN_WARNING "cpi: couldn't allocate request\n");
- sclp_unregister(&sclp_cpi_event);
- return PTR_ERR(req);
- }
-
- /* Prepare semaphore */
- sema_init(&sem, 0);
- req->callback_data = &sem;
- /* Add request to sclp queue */
- rc = sclp_add_request(req);
- if (rc) {
- printk(KERN_WARNING "cpi: could not start request\n");
- cpi_free_req(req);
- sclp_unregister(&sclp_cpi_event);
- return rc;
- }
- /* make "insmod" sleep until callback arrives */
- down(&sem);
-
- rc = ((struct cpi_sccb *) req->sccb)->header.response_code;
- if (rc != 0x0020) {
- printk(KERN_WARNING "cpi: failed with response code 0x%x\n",
- rc);
- rc = -ECOMM;
- } else
- rc = 0;
-
- cpi_free_req(req);
- sclp_unregister(&sclp_cpi_event);
-
- return rc;
-}
-
-
static void __exit cpi_module_exit(void)
{
}
-
-/* declare driver module init/cleanup functions */
module_init(cpi_module_init);
module_exit(cpi_module_exit);
-
diff --git a/drivers/s390/char/sclp_cpi_sys.c b/drivers/s390/char/sclp_cpi_sys.c
new file mode 100644
index 00000000000..41617032afd
--- /dev/null
+++ b/drivers/s390/char/sclp_cpi_sys.c
@@ -0,0 +1,400 @@
+/*
+ * drivers/s390/char/sclp_cpi_sys.c
+ * SCLP control program identification sysfs interface
+ *
+ * Copyright IBM Corp. 2001, 2007
+ * Author(s): Martin Peschke <mpeschke@de.ibm.com>
+ * Michael Ernst <mernst@de.ibm.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/stat.h>
+#include <linux/device.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <linux/kmod.h>
+#include <linux/timer.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/completion.h>
+#include <asm/ebcdic.h>
+#include <asm/sclp.h>
+#include "sclp.h"
+#include "sclp_rw.h"
+#include "sclp_cpi_sys.h"
+
+#define CPI_LENGTH_NAME 8
+#define CPI_LENGTH_LEVEL 16
+
+struct cpi_evbuf {
+ struct evbuf_header header;
+ u8 id_format;
+ u8 reserved0;
+ u8 system_type[CPI_LENGTH_NAME];
+ u64 reserved1;
+ u8 system_name[CPI_LENGTH_NAME];
+ u64 reserved2;
+ u64 system_level;
+ u64 reserved3;
+ u8 sysplex_name[CPI_LENGTH_NAME];
+ u8 reserved4[16];
+} __attribute__((packed));
+
+struct cpi_sccb {
+ struct sccb_header header;
+ struct cpi_evbuf cpi_evbuf;
+} __attribute__((packed));
+
+static struct sclp_register sclp_cpi_event = {
+ .send_mask = EVTYP_CTLPROGIDENT_MASK,
+};
+
+static char system_name[CPI_LENGTH_NAME + 1];
+static char sysplex_name[CPI_LENGTH_NAME + 1];
+static char system_type[CPI_LENGTH_NAME + 1];
+static u64 system_level;
+
+static void set_data(char *field, char *data)
+{
+ memset(field, ' ', CPI_LENGTH_NAME);
+ memcpy(field, data, strlen(data));
+ sclp_ascebc_str(field, CPI_LENGTH_NAME);
+}
+
+static void cpi_callback(struct sclp_req *req, void *data)
+{
+ struct completion *completion = data;
+
+ complete(completion);
+}
+
+static struct sclp_req *cpi_prepare_req(void)
+{
+ struct sclp_req *req;
+ struct cpi_sccb *sccb;
+ struct cpi_evbuf *evb;
+
+ req = kzalloc(sizeof(struct sclp_req), GFP_KERNEL);
+ if (!req)
+ return ERR_PTR(-ENOMEM);
+ sccb = (struct cpi_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ if (!sccb) {
+ kfree(req);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ /* setup SCCB for Control-Program Identification */
+ sccb->header.length = sizeof(struct cpi_sccb);
+ sccb->cpi_evbuf.header.length = sizeof(struct cpi_evbuf);
+ sccb->cpi_evbuf.header.type = 0x0b;
+ evb = &sccb->cpi_evbuf;
+
+ /* set system type */
+ set_data(evb->system_type, system_type);
+
+ /* set system name */
+ set_data(evb->system_name, system_name);
+
+ /* set sytem level */
+ evb->system_level = system_level;
+
+ /* set sysplex name */
+ set_data(evb->sysplex_name, sysplex_name);
+
+ /* prepare request data structure presented to SCLP driver */
+ req->command = SCLP_CMDW_WRITE_EVENT_DATA;
+ req->sccb = sccb;
+ req->status = SCLP_REQ_FILLED;
+ req->callback = cpi_callback;
+ return req;
+}
+
+static void cpi_free_req(struct sclp_req *req)
+{
+ free_page((unsigned long) req->sccb);
+ kfree(req);
+}
+
+static int cpi_req(void)
+{
+ struct completion completion;
+ struct sclp_req *req;
+ int rc;
+ int response;
+
+ rc = sclp_register(&sclp_cpi_event);
+ if (rc) {
+ printk(KERN_WARNING "cpi: could not register "
+ "to hardware console.\n");
+ goto out;
+ }
+ if (!(sclp_cpi_event.sclp_send_mask & EVTYP_CTLPROGIDENT_MASK)) {
+ printk(KERN_WARNING "cpi: no control program "
+ "identification support\n");
+ rc = -EOPNOTSUPP;
+ goto out_unregister;
+ }
+
+ req = cpi_prepare_req();
+ if (IS_ERR(req)) {
+ printk(KERN_WARNING "cpi: could not allocate request\n");
+ rc = PTR_ERR(req);
+ goto out_unregister;
+ }
+
+ init_completion(&completion);
+ req->callback_data = &completion;
+
+ /* Add request to sclp queue */
+ rc = sclp_add_request(req);
+ if (rc) {
+ printk(KERN_WARNING "cpi: could not start request\n");
+ goto out_free_req;
+ }
+
+ wait_for_completion(&completion);
+
+ if (req->status != SCLP_REQ_DONE) {
+ printk(KERN_WARNING "cpi: request failed (status=0x%02x)\n",
+ req->status);
+ rc = -EIO;
+ goto out_free_req;
+ }
+
+ response = ((struct cpi_sccb *) req->sccb)->header.response_code;
+ if (response != 0x0020) {
+ printk(KERN_WARNING "cpi: failed with "
+ "response code 0x%x\n", response);
+ rc = -EIO;
+ }
+
+out_free_req:
+ cpi_free_req(req);
+
+out_unregister:
+ sclp_unregister(&sclp_cpi_event);
+
+out:
+ return rc;
+}
+
+static int check_string(const char *attr, const char *str)
+{
+ size_t len;
+ size_t i;
+
+ len = strlen(str);
+
+ if ((len > 0) && (str[len - 1] == '\n'))
+ len--;
+
+ if (len > CPI_LENGTH_NAME)
+ return -EINVAL;
+
+ for (i = 0; i < len ; i++) {
+ if (isalpha(str[i]) || isdigit(str[i]) ||
+ strchr("$@# ", str[i]))
+ continue;
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void set_string(char *attr, const char *value)
+{
+ size_t len;
+ size_t i;
+
+ len = strlen(value);
+
+ if ((len > 0) && (value[len - 1] == '\n'))
+ len--;
+
+ for (i = 0; i < CPI_LENGTH_NAME; i++) {
+ if (i < len)
+ attr[i] = toupper(value[i]);
+ else
+ attr[i] = ' ';
+ }
+}
+
+static ssize_t system_name_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%s\n", system_name);
+}
+
+static ssize_t system_name_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ int rc;
+
+ rc = check_string("system_name", buf);
+ if (rc)
+ return rc;
+
+ set_string(system_name, buf);
+
+ return len;
+}
+
+static struct kobj_attribute system_name_attr =
+ __ATTR(system_name, 0644, system_name_show, system_name_store);
+
+static ssize_t sysplex_name_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%s\n", sysplex_name);
+}
+
+static ssize_t sysplex_name_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ int rc;
+
+ rc = check_string("sysplex_name", buf);
+ if (rc)
+ return rc;
+
+ set_string(sysplex_name, buf);
+
+ return len;
+}
+
+static struct kobj_attribute sysplex_name_attr =
+ __ATTR(sysplex_name, 0644, sysplex_name_show, sysplex_name_store);
+
+static ssize_t system_type_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%s\n", system_type);
+}
+
+static ssize_t system_type_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ int rc;
+
+ rc = check_string("system_type", buf);
+ if (rc)
+ return rc;
+
+ set_string(system_type, buf);
+
+ return len;
+}
+
+static struct kobj_attribute system_type_attr =
+ __ATTR(system_type, 0644, system_type_show, system_type_store);
+
+static ssize_t system_level_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *page)
+{
+ unsigned long long level = system_level;
+
+ return snprintf(page, PAGE_SIZE, "%#018llx\n", level);
+}
+
+static ssize_t system_level_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ unsigned long long level;
+ char *endp;
+
+ level = simple_strtoull(buf, &endp, 16);
+
+ if (endp == buf)
+ return -EINVAL;
+ if (*endp == '\n')
+ endp++;
+ if (*endp)
+ return -EINVAL;
+
+ system_level = level;
+
+ return len;
+}
+
+static struct kobj_attribute system_level_attr =
+ __ATTR(system_level, 0644, system_level_show, system_level_store);
+
+static ssize_t set_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t len)
+{
+ int rc;
+
+ rc = cpi_req();
+ if (rc)
+ return rc;
+
+ return len;
+}
+
+static struct kobj_attribute set_attr = __ATTR(set, 0200, NULL, set_store);
+
+static struct attribute *cpi_attrs[] = {
+ &system_name_attr.attr,
+ &sysplex_name_attr.attr,
+ &system_type_attr.attr,
+ &system_level_attr.attr,
+ &set_attr.attr,
+ NULL,
+};
+
+static struct attribute_group cpi_attr_group = {
+ .attrs = cpi_attrs,
+};
+
+static struct kset *cpi_kset;
+
+int sclp_cpi_set_data(const char *system, const char *sysplex, const char *type,
+ const u64 level)
+{
+ int rc;
+
+ rc = check_string("system_name", system);
+ if (rc)
+ return rc;
+ rc = check_string("sysplex_name", sysplex);
+ if (rc)
+ return rc;
+ rc = check_string("system_type", type);
+ if (rc)
+ return rc;
+
+ set_string(system_name, system);
+ set_string(sysplex_name, sysplex);
+ set_string(system_type, type);
+ system_level = level;
+
+ return cpi_req();
+}
+EXPORT_SYMBOL(sclp_cpi_set_data);
+
+static int __init cpi_init(void)
+{
+ int rc;
+
+ cpi_kset = kset_create_and_add("cpi", NULL, firmware_kobj);
+ if (!cpi_kset)
+ return -ENOMEM;
+
+ rc = sysfs_create_group(&cpi_kset->kobj, &cpi_attr_group);
+ if (rc)
+ kset_unregister(cpi_kset);
+
+ return rc;
+}
+
+__initcall(cpi_init);
diff --git a/drivers/s390/char/sclp_cpi_sys.h b/drivers/s390/char/sclp_cpi_sys.h
new file mode 100644
index 00000000000..deef3e6ff49
--- /dev/null
+++ b/drivers/s390/char/sclp_cpi_sys.h
@@ -0,0 +1,15 @@
+/*
+ * drivers/s390/char/sclp_cpi_sys.h
+ * SCLP control program identification sysfs interface
+ *
+ * Copyright IBM Corp. 2007
+ * Author(s): Michael Ernst <mernst@de.ibm.com>
+ */
+
+#ifndef __SCLP_CPI_SYS_H__
+#define __SCLP_CPI_SYS_H__
+
+int sclp_cpi_set_data(const char *system, const char *sysplex,
+ const char *type, u64 level);
+
+#endif /* __SCLP_CPI_SYS_H__ */
diff --git a/drivers/s390/char/sclp_info.c b/drivers/s390/char/sclp_info.c
deleted file mode 100644
index a1136e05275..00000000000
--- a/drivers/s390/char/sclp_info.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * drivers/s390/char/sclp_info.c
- *
- * Copyright IBM Corp. 2007
- * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
- */
-
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <asm/sclp.h>
-#include "sclp.h"
-
-struct sclp_readinfo_sccb {
- struct sccb_header header; /* 0-7 */
- u16 rnmax; /* 8-9 */
- u8 rnsize; /* 10 */
- u8 _reserved0[24 - 11]; /* 11-23 */
- u8 loadparm[8]; /* 24-31 */
- u8 _reserved1[48 - 32]; /* 32-47 */
- u64 facilities; /* 48-55 */
- u8 _reserved2[91 - 56]; /* 56-90 */
- u8 flags; /* 91 */
- u8 _reserved3[100 - 92]; /* 92-99 */
- u32 rnsize2; /* 100-103 */
- u64 rnmax2; /* 104-111 */
- u8 _reserved4[4096 - 112]; /* 112-4095 */
-} __attribute__((packed, aligned(4096)));
-
-static struct sclp_readinfo_sccb __initdata early_readinfo_sccb;
-static int __initdata early_readinfo_sccb_valid;
-
-u64 sclp_facilities;
-
-void __init sclp_readinfo_early(void)
-{
- int ret;
- int i;
- struct sclp_readinfo_sccb *sccb;
- sclp_cmdw_t commands[] = {SCLP_CMDW_READ_SCP_INFO_FORCED,
- SCLP_CMDW_READ_SCP_INFO};
-
- /* Enable service signal subclass mask. */
- __ctl_set_bit(0, 9);
- sccb = &early_readinfo_sccb;
- for (i = 0; i < ARRAY_SIZE(commands); i++) {
- do {
- memset(sccb, 0, sizeof(*sccb));
- sccb->header.length = sizeof(*sccb);
- sccb->header.control_mask[2] = 0x80;
- ret = sclp_service_call(commands[i], sccb);
- } while (ret == -EBUSY);
-
- if (ret)
- break;
- __load_psw_mask(PSW_BASE_BITS | PSW_MASK_EXT |
- PSW_MASK_WAIT | PSW_DEFAULT_KEY);
- local_irq_disable();
- /*
- * Contents of the sccb might have changed
- * therefore a barrier is needed.
- */
- barrier();
- if (sccb->header.response_code == 0x10) {
- early_readinfo_sccb_valid = 1;
- break;
- }
- if (sccb->header.response_code != 0x1f0)
- break;
- }
- /* Disable service signal subclass mask again. */
- __ctl_clear_bit(0, 9);
-}
-
-void __init sclp_facilities_detect(void)
-{
- if (!early_readinfo_sccb_valid)
- return;
- sclp_facilities = early_readinfo_sccb.facilities;
-}
-
-unsigned long long __init sclp_memory_detect(void)
-{
- unsigned long long memsize;
- struct sclp_readinfo_sccb *sccb;
-
- if (!early_readinfo_sccb_valid)
- return 0;
- sccb = &early_readinfo_sccb;
- if (sccb->rnsize)
- memsize = sccb->rnsize << 20;
- else
- memsize = sccb->rnsize2 << 20;
- if (sccb->rnmax)
- memsize *= sccb->rnmax;
- else
- memsize *= sccb->rnmax2;
- return memsize;
-}
-
-/*
- * This function will be called after sclp_memory_detect(), which gets called
- * early from early.c code. Therefore the sccb should have valid contents.
- */
-void __init sclp_get_ipl_info(struct sclp_ipl_info *info)
-{
- struct sclp_readinfo_sccb *sccb;
-
- if (!early_readinfo_sccb_valid)
- return;
- sccb = &early_readinfo_sccb;
- info->is_valid = 1;
- if (sccb->flags & 0x2)
- info->has_dump = 1;
- memcpy(&info->loadparm, &sccb->loadparm, LOADPARM_LEN);
-}
diff --git a/drivers/s390/char/sclp_rw.c b/drivers/s390/char/sclp_rw.c
index d6b06ab8118..ad7195d3de0 100644
--- a/drivers/s390/char/sclp_rw.c
+++ b/drivers/s390/char/sclp_rw.c
@@ -76,7 +76,7 @@ sclp_make_buffer(void *page, unsigned short columns, unsigned short htab)
}
/*
- * Return a pointer to the orignal page that has been used to create
+ * Return a pointer to the original page that has been used to create
* the buffer.
*/
void *
diff --git a/drivers/s390/char/tape_3590.c b/drivers/s390/char/tape_3590.c
index da25f8e2415..8246ef3ab09 100644
--- a/drivers/s390/char/tape_3590.c
+++ b/drivers/s390/char/tape_3590.c
@@ -1495,7 +1495,7 @@ tape_3590_unit_check(struct tape_device *device, struct tape_request *request,
device->cdev->dev.bus_id);
return tape_3590_erp_basic(device, request, irb, -EPERM);
case 0x8013:
- PRINT_WARN("(%s): Another host has priviliged access to the "
+ PRINT_WARN("(%s): Another host has privileged access to the "
"tape device\n", device->cdev->dev.bus_id);
PRINT_WARN("(%s): To solve the problem unload the current "
"cartridge!\n", device->cdev->dev.bus_id);
diff --git a/drivers/s390/char/tape_core.c b/drivers/s390/char/tape_core.c
index 2fae6338ee1..7ad8cf15764 100644
--- a/drivers/s390/char/tape_core.c
+++ b/drivers/s390/char/tape_core.c
@@ -37,7 +37,7 @@ static void tape_long_busy_timeout(unsigned long data);
* we can assign the devices to minor numbers of the same major
* The list is protected by the rwlock
*/
-static struct list_head tape_device_list = LIST_HEAD_INIT(tape_device_list);
+static LIST_HEAD(tape_device_list);
static DEFINE_RWLOCK(tape_device_lock);
/*
diff --git a/drivers/s390/char/tape_proc.c b/drivers/s390/char/tape_proc.c
index cea49f001f8..c9b96d51b28 100644
--- a/drivers/s390/char/tape_proc.c
+++ b/drivers/s390/char/tape_proc.c
@@ -97,7 +97,7 @@ static void tape_proc_stop(struct seq_file *m, void *v)
{
}
-static struct seq_operations tape_proc_seq = {
+static const struct seq_operations tape_proc_seq = {
.start = tape_proc_start,
.next = tape_proc_next,
.stop = tape_proc_stop,
diff --git a/drivers/s390/char/vmlogrdr.c b/drivers/s390/char/vmlogrdr.c
index e0c4c508e12..d364e0bfae1 100644
--- a/drivers/s390/char/vmlogrdr.c
+++ b/drivers/s390/char/vmlogrdr.c
@@ -683,7 +683,7 @@ static int vmlogrdr_register_driver(void)
/* Register with iucv driver */
ret = iucv_register(&vmlogrdr_iucv_handler, 1);
if (ret) {
- printk (KERN_ERR "vmlogrdr: failed to register with"
+ printk (KERN_ERR "vmlogrdr: failed to register with "
"iucv driver\n");
goto out;
}
diff --git a/drivers/s390/char/vmur.c b/drivers/s390/char/vmur.c
index d70a6e65bf1..7689b500a10 100644
--- a/drivers/s390/char/vmur.c
+++ b/drivers/s390/char/vmur.c
@@ -759,7 +759,7 @@ static loff_t ur_llseek(struct file *file, loff_t offset, int whence)
return newpos;
}
-static struct file_operations ur_fops = {
+static const struct file_operations ur_fops = {
.owner = THIS_MODULE,
.open = ur_open,
.release = ur_release,
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c
index 7073daf7798..f523501e6e6 100644
--- a/drivers/s390/char/zcore.c
+++ b/drivers/s390/char/zcore.c
@@ -470,7 +470,7 @@ static loff_t zcore_lseek(struct file *file, loff_t offset, int orig)
return rc;
}
-static struct file_operations zcore_fops = {
+static const struct file_operations zcore_fops = {
.owner = THIS_MODULE,
.llseek = zcore_lseek,
.read = zcore_read,
diff --git a/drivers/s390/cio/airq.c b/drivers/s390/cio/airq.c
index 5287631fbfc..b7a07a86629 100644
--- a/drivers/s390/cio/airq.c
+++ b/drivers/s390/cio/airq.c
@@ -1,12 +1,12 @@
/*
* drivers/s390/cio/airq.c
- * S/390 common I/O routines -- support for adapter interruptions
+ * Support for adapter interruptions
*
- * Copyright (C) 1999-2002 IBM Deutschland Entwicklung GmbH,
- * IBM Corporation
- * Author(s): Ingo Adlung (adlung@de.ibm.com)
- * Cornelia Huck (cornelia.huck@de.ibm.com)
- * Arnd Bergmann (arndb@de.ibm.com)
+ * Copyright IBM Corp. 1999,2007
+ * Author(s): Ingo Adlung <adlung@de.ibm.com>
+ * Cornelia Huck <cornelia.huck@de.ibm.com>
+ * Arnd Bergmann <arndb@de.ibm.com>
+ * Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
*/
#include <linux/init.h>
@@ -14,72 +14,131 @@
#include <linux/slab.h>
#include <linux/rcupdate.h>
+#include <asm/airq.h>
+
+#include "cio.h"
#include "cio_debug.h"
-#include "airq.h"
-static adapter_int_handler_t adapter_handler;
+#define NR_AIRQS 32
+#define NR_AIRQS_PER_WORD sizeof(unsigned long)
+#define NR_AIRQ_WORDS (NR_AIRQS / NR_AIRQS_PER_WORD)
-/*
- * register for adapter interrupts
- *
- * With HiperSockets the zSeries architecture provides for
- * means of adapter interrups, pseudo I/O interrupts that are
- * not tied to an I/O subchannel, but to an adapter. However,
- * it doesn't disclose the info how to enable/disable them, but
- * to recognize them only. Perhaps we should consider them
- * being shared interrupts, and thus build a linked list
- * of adapter handlers ... to be evaluated ...
- */
-int
-s390_register_adapter_interrupt (adapter_int_handler_t handler)
-{
- int ret;
- char dbf_txt[15];
+union indicator_t {
+ unsigned long word[NR_AIRQ_WORDS];
+ unsigned char byte[NR_AIRQS];
+} __attribute__((packed));
- CIO_TRACE_EVENT (4, "rgaint");
+struct airq_t {
+ adapter_int_handler_t handler;
+ void *drv_data;
+};
- if (handler == NULL)
- ret = -EINVAL;
- else
- ret = (cmpxchg(&adapter_handler, NULL, handler) ? -EBUSY : 0);
- if (!ret)
- synchronize_sched(); /* Allow interrupts to complete. */
+static union indicator_t indicators;
+static struct airq_t *airqs[NR_AIRQS];
- sprintf (dbf_txt, "ret:%d", ret);
- CIO_TRACE_EVENT (4, dbf_txt);
+static int register_airq(struct airq_t *airq)
+{
+ int i;
- return ret;
+ for (i = 0; i < NR_AIRQS; i++)
+ if (!cmpxchg(&airqs[i], NULL, airq))
+ return i;
+ return -ENOMEM;
}
-int
-s390_unregister_adapter_interrupt (adapter_int_handler_t handler)
+/**
+ * s390_register_adapter_interrupt() - register adapter interrupt handler
+ * @handler: adapter handler to be registered
+ * @drv_data: driver data passed with each call to the handler
+ *
+ * Returns:
+ * Pointer to the indicator to be used on success
+ * ERR_PTR() if registration failed
+ */
+void *s390_register_adapter_interrupt(adapter_int_handler_t handler,
+ void *drv_data)
{
+ struct airq_t *airq;
+ char dbf_txt[16];
int ret;
- char dbf_txt[15];
- CIO_TRACE_EVENT (4, "urgaint");
-
- if (handler == NULL)
- ret = -EINVAL;
- else {
- adapter_handler = NULL;
- synchronize_sched(); /* Allow interrupts to complete. */
- ret = 0;
+ airq = kmalloc(sizeof(struct airq_t), GFP_KERNEL);
+ if (!airq) {
+ ret = -ENOMEM;
+ goto out;
}
- sprintf (dbf_txt, "ret:%d", ret);
- CIO_TRACE_EVENT (4, dbf_txt);
-
- return ret;
+ airq->handler = handler;
+ airq->drv_data = drv_data;
+ ret = register_airq(airq);
+ if (ret < 0)
+ kfree(airq);
+out:
+ snprintf(dbf_txt, sizeof(dbf_txt), "rairq:%d", ret);
+ CIO_TRACE_EVENT(4, dbf_txt);
+ if (ret < 0)
+ return ERR_PTR(ret);
+ else
+ return &indicators.byte[ret];
}
+EXPORT_SYMBOL(s390_register_adapter_interrupt);
-void
-do_adapter_IO (void)
+/**
+ * s390_unregister_adapter_interrupt - unregister adapter interrupt handler
+ * @ind: indicator for which the handler is to be unregistered
+ */
+void s390_unregister_adapter_interrupt(void *ind)
{
- CIO_TRACE_EVENT (6, "doaio");
+ struct airq_t *airq;
+ char dbf_txt[16];
+ int i;
- if (adapter_handler)
- (*adapter_handler) ();
+ i = (int) ((addr_t) ind) - ((addr_t) &indicators.byte[0]);
+ snprintf(dbf_txt, sizeof(dbf_txt), "urairq:%d", i);
+ CIO_TRACE_EVENT(4, dbf_txt);
+ indicators.byte[i] = 0;
+ airq = xchg(&airqs[i], NULL);
+ /*
+ * Allow interrupts to complete. This will ensure that the airq handle
+ * is no longer referenced by any interrupt handler.
+ */
+ synchronize_sched();
+ kfree(airq);
}
+EXPORT_SYMBOL(s390_unregister_adapter_interrupt);
+
+#define INDICATOR_MASK (0xffUL << ((NR_AIRQS_PER_WORD - 1) * 8))
-EXPORT_SYMBOL (s390_register_adapter_interrupt);
-EXPORT_SYMBOL (s390_unregister_adapter_interrupt);
+void do_adapter_IO(void)
+{
+ int w;
+ int i;
+ unsigned long word;
+ struct airq_t *airq;
+
+ /*
+ * Access indicator array in word-sized chunks to minimize storage
+ * fetch operations.
+ */
+ for (w = 0; w < NR_AIRQ_WORDS; w++) {
+ word = indicators.word[w];
+ i = w * NR_AIRQS_PER_WORD;
+ /*
+ * Check bytes within word for active indicators.
+ */
+ while (word) {
+ if (word & INDICATOR_MASK) {
+ airq = airqs[i];
+ if (likely(airq))
+ airq->handler(&indicators.byte[i],
+ airq->drv_data);
+ else
+ /*
+ * Reset ill-behaved indicator.
+ */
+ indicators.byte[i] = 0;
+ }
+ word <<= 8;
+ i++;
+ }
+ }
+}
diff --git a/drivers/s390/cio/airq.h b/drivers/s390/cio/airq.h
deleted file mode 100644
index 7d6be3fdcd6..00000000000
--- a/drivers/s390/cio/airq.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifndef S390_AINTERRUPT_H
-#define S390_AINTERRUPT_H
-
-typedef int (*adapter_int_handler_t)(void);
-
-extern int s390_register_adapter_interrupt(adapter_int_handler_t handler);
-extern int s390_unregister_adapter_interrupt(adapter_int_handler_t handler);
-extern void do_adapter_IO (void);
-
-#endif
diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c
index bd5f16f80bf..e8597ec9224 100644
--- a/drivers/s390/cio/blacklist.c
+++ b/drivers/s390/cio/blacklist.c
@@ -348,7 +348,7 @@ cio_ignore_write(struct file *file, const char __user *user_buf,
return user_len;
}
-static struct seq_operations cio_ignore_proc_seq_ops = {
+static const struct seq_operations cio_ignore_proc_seq_ops = {
.start = cio_ignore_proc_seq_start,
.stop = cio_ignore_proc_seq_stop,
.next = cio_ignore_proc_seq_next,
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index 5baa517c3b6..3964056a9a4 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -35,8 +35,8 @@ ccwgroup_bus_match (struct device * dev, struct device_driver * drv)
struct ccwgroup_device *gdev;
struct ccwgroup_driver *gdrv;
- gdev = container_of(dev, struct ccwgroup_device, dev);
- gdrv = container_of(drv, struct ccwgroup_driver, driver);
+ gdev = to_ccwgroupdev(dev);
+ gdrv = to_ccwgroupdrv(drv);
if (gdev->creator_id == gdrv->driver_id)
return 1;
@@ -75,8 +75,10 @@ static void ccwgroup_ungroup_callback(struct device *dev)
struct ccwgroup_device *gdev = to_ccwgroupdev(dev);
mutex_lock(&gdev->reg_mutex);
- __ccwgroup_remove_symlinks(gdev);
- device_unregister(dev);
+ if (device_is_registered(&gdev->dev)) {
+ __ccwgroup_remove_symlinks(gdev);
+ device_unregister(dev);
+ }
mutex_unlock(&gdev->reg_mutex);
}
@@ -111,7 +113,7 @@ ccwgroup_release (struct device *dev)
gdev = to_ccwgroupdev(dev);
for (i = 0; i < gdev->count; i++) {
- gdev->cdev[i]->dev.driver_data = NULL;
+ dev_set_drvdata(&gdev->cdev[i]->dev, NULL);
put_device(&gdev->cdev[i]->dev);
}
kfree(gdev);
@@ -196,11 +198,11 @@ int ccwgroup_create(struct device *root, unsigned int creator_id,
goto error;
}
/* Don't allow a device to belong to more than one group. */
- if (gdev->cdev[i]->dev.driver_data) {
+ if (dev_get_drvdata(&gdev->cdev[i]->dev)) {
rc = -EINVAL;
goto error;
}
- gdev->cdev[i]->dev.driver_data = gdev;
+ dev_set_drvdata(&gdev->cdev[i]->dev, gdev);
}
gdev->creator_id = creator_id;
@@ -234,8 +236,8 @@ int ccwgroup_create(struct device *root, unsigned int creator_id,
error:
for (i = 0; i < argc; i++)
if (gdev->cdev[i]) {
- if (gdev->cdev[i]->dev.driver_data == gdev)
- gdev->cdev[i]->dev.driver_data = NULL;
+ if (dev_get_drvdata(&gdev->cdev[i]->dev) == gdev)
+ dev_set_drvdata(&gdev->cdev[i]->dev, NULL);
put_device(&gdev->cdev[i]->dev);
}
mutex_unlock(&gdev->reg_mutex);
@@ -408,6 +410,7 @@ int ccwgroup_driver_register(struct ccwgroup_driver *cdriver)
/* register our new driver with the core */
cdriver->driver.bus = &ccwgroup_bus_type;
cdriver->driver.name = cdriver->name;
+ cdriver->driver.owner = cdriver->owner;
return driver_register(&cdriver->driver);
}
@@ -463,8 +466,8 @@ __ccwgroup_get_gdev_by_cdev(struct ccw_device *cdev)
{
struct ccwgroup_device *gdev;
- if (cdev->dev.driver_data) {
- gdev = (struct ccwgroup_device *)cdev->dev.driver_data;
+ gdev = dev_get_drvdata(&cdev->dev);
+ if (gdev) {
if (get_device(&gdev->dev)) {
mutex_lock(&gdev->reg_mutex);
if (device_is_registered(&gdev->dev))
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 597c0c76a2a..e7ba16a74ef 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -89,7 +89,8 @@ int chsc_get_ssd_info(struct subchannel_id schid, struct chsc_ssd_info *ssd)
/* Copy data */
ret = 0;
memset(ssd, 0, sizeof(struct chsc_ssd_info));
- if ((ssd_area->st != 0) && (ssd_area->st != 2))
+ if ((ssd_area->st != SUBCHANNEL_TYPE_IO) &&
+ (ssd_area->st != SUBCHANNEL_TYPE_MSG))
goto out_free;
ssd->path_mask = ssd_area->path_mask;
ssd->fla_valid_mask = ssd_area->fla_valid_mask;
@@ -132,20 +133,16 @@ static void terminate_internal_io(struct subchannel *sch)
device_set_intretry(sch);
/* Call handler. */
if (sch->driver && sch->driver->termination)
- sch->driver->termination(&sch->dev);
+ sch->driver->termination(sch);
}
-static int
-s390_subchannel_remove_chpid(struct device *dev, void *data)
+static int s390_subchannel_remove_chpid(struct subchannel *sch, void *data)
{
int j;
int mask;
- struct subchannel *sch;
- struct chp_id *chpid;
+ struct chp_id *chpid = data;
struct schib schib;
- sch = to_subchannel(dev);
- chpid = data;
for (j = 0; j < 8; j++) {
mask = 0x80 >> j;
if ((sch->schib.pmcw.pim & mask) &&
@@ -158,7 +155,7 @@ s390_subchannel_remove_chpid(struct device *dev, void *data)
spin_lock_irq(sch->lock);
stsch(sch->schid, &schib);
- if (!schib.pmcw.dnv)
+ if (!css_sch_is_valid(&schib))
goto out_unreg;
memcpy(&sch->schib, &schib, sizeof(struct schib));
/* Check for single path devices. */
@@ -172,12 +169,12 @@ s390_subchannel_remove_chpid(struct device *dev, void *data)
terminate_internal_io(sch);
/* Re-start path verification. */
if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
}
} else {
/* trigger path verification. */
if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
else if (sch->lpm == mask)
goto out_unreg;
}
@@ -201,12 +198,10 @@ void chsc_chp_offline(struct chp_id chpid)
if (chp_get_status(chpid) <= 0)
return;
- bus_for_each_dev(&css_bus_type, NULL, &chpid,
- s390_subchannel_remove_chpid);
+ for_each_subchannel_staged(s390_subchannel_remove_chpid, NULL, &chpid);
}
-static int
-s390_process_res_acc_new_sch(struct subchannel_id schid)
+static int s390_process_res_acc_new_sch(struct subchannel_id schid, void *data)
{
struct schib schib;
/*
@@ -252,18 +247,10 @@ static int get_res_chpid_mask(struct chsc_ssd_info *ssd,
return 0;
}
-static int
-__s390_process_res_acc(struct subchannel_id schid, void *data)
+static int __s390_process_res_acc(struct subchannel *sch, void *data)
{
int chp_mask, old_lpm;
- struct res_acc_data *res_data;
- struct subchannel *sch;
-
- res_data = data;
- sch = get_subchannel_by_schid(schid);
- if (!sch)
- /* Check if a subchannel is newly available. */
- return s390_process_res_acc_new_sch(schid);
+ struct res_acc_data *res_data = data;
spin_lock_irq(sch->lock);
chp_mask = get_res_chpid_mask(&sch->ssd_info, res_data);
@@ -279,10 +266,10 @@ __s390_process_res_acc(struct subchannel_id schid, void *data)
if (!old_lpm && sch->lpm)
device_trigger_reprobe(sch);
else if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
out:
spin_unlock_irq(sch->lock);
- put_device(&sch->dev);
+
return 0;
}
@@ -305,7 +292,8 @@ static void s390_process_res_acc (struct res_acc_data *res_data)
* The more information we have (info), the less scanning
* will we have to do.
*/
- for_each_subchannel(__s390_process_res_acc, res_data);
+ for_each_subchannel_staged(__s390_process_res_acc,
+ s390_process_res_acc_new_sch, res_data);
}
static int
@@ -499,8 +487,7 @@ void chsc_process_crw(void)
} while (sei_area->flags & 0x80);
}
-static int
-__chp_add_new_sch(struct subchannel_id schid)
+static int __chp_add_new_sch(struct subchannel_id schid, void *data)
{
struct schib schib;
@@ -514,45 +501,37 @@ __chp_add_new_sch(struct subchannel_id schid)
}
-static int
-__chp_add(struct subchannel_id schid, void *data)
+static int __chp_add(struct subchannel *sch, void *data)
{
int i, mask;
- struct chp_id *chpid;
- struct subchannel *sch;
-
- chpid = data;
- sch = get_subchannel_by_schid(schid);
- if (!sch)
- /* Check if the subchannel is now available. */
- return __chp_add_new_sch(schid);
+ struct chp_id *chpid = data;
+
spin_lock_irq(sch->lock);
for (i=0; i<8; i++) {
mask = 0x80 >> i;
if ((sch->schib.pmcw.pim & mask) &&
- (sch->schib.pmcw.chpid[i] == chpid->id)) {
- if (stsch(sch->schid, &sch->schib) != 0) {
- /* Endgame. */
- spin_unlock_irq(sch->lock);
- return -ENXIO;
- }
+ (sch->schib.pmcw.chpid[i] == chpid->id))
break;
- }
}
if (i==8) {
spin_unlock_irq(sch->lock);
return 0;
}
+ if (stsch(sch->schid, &sch->schib)) {
+ spin_unlock_irq(sch->lock);
+ css_schedule_eval(sch->schid);
+ return 0;
+ }
sch->lpm = ((sch->schib.pmcw.pim &
sch->schib.pmcw.pam &
sch->schib.pmcw.pom)
| mask) & sch->opm;
if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
spin_unlock_irq(sch->lock);
- put_device(&sch->dev);
+
return 0;
}
@@ -564,7 +543,8 @@ void chsc_chp_online(struct chp_id chpid)
CIO_TRACE_EVENT(2, dbf_txt);
if (chp_get_status(chpid) != 0)
- for_each_subchannel(__chp_add, &chpid);
+ for_each_subchannel_staged(__chp_add, __chp_add_new_sch,
+ &chpid);
}
static void __s390_subchannel_vary_chpid(struct subchannel *sch,
@@ -589,7 +569,7 @@ static void __s390_subchannel_vary_chpid(struct subchannel *sch,
if (!old_lpm)
device_trigger_reprobe(sch);
else if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
break;
}
sch->opm &= ~mask;
@@ -603,37 +583,29 @@ static void __s390_subchannel_vary_chpid(struct subchannel *sch,
terminate_internal_io(sch);
/* Re-start path verification. */
if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
}
} else if (!sch->lpm) {
if (device_trigger_verify(sch) != 0)
css_schedule_eval(sch->schid);
} else if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
break;
}
spin_unlock_irqrestore(sch->lock, flags);
}
-static int s390_subchannel_vary_chpid_off(struct device *dev, void *data)
+static int s390_subchannel_vary_chpid_off(struct subchannel *sch, void *data)
{
- struct subchannel *sch;
- struct chp_id *chpid;
-
- sch = to_subchannel(dev);
- chpid = data;
+ struct chp_id *chpid = data;
__s390_subchannel_vary_chpid(sch, *chpid, 0);
return 0;
}
-static int s390_subchannel_vary_chpid_on(struct device *dev, void *data)
+static int s390_subchannel_vary_chpid_on(struct subchannel *sch, void *data)
{
- struct subchannel *sch;
- struct chp_id *chpid;
-
- sch = to_subchannel(dev);
- chpid = data;
+ struct chp_id *chpid = data;
__s390_subchannel_vary_chpid(sch, *chpid, 1);
return 0;
@@ -643,13 +615,7 @@ static int
__s390_vary_chpid_on(struct subchannel_id schid, void *data)
{
struct schib schib;
- struct subchannel *sch;
- sch = get_subchannel_by_schid(schid);
- if (sch) {
- put_device(&sch->dev);
- return 0;
- }
if (stsch_err(schid, &schib))
/* We're through */
return -ENXIO;
@@ -669,12 +635,13 @@ int chsc_chp_vary(struct chp_id chpid, int on)
* Redo PathVerification on the devices the chpid connects to
*/
- bus_for_each_dev(&css_bus_type, NULL, &chpid, on ?
- s390_subchannel_vary_chpid_on :
- s390_subchannel_vary_chpid_off);
if (on)
- /* Scan for new devices on varied on path. */
- for_each_subchannel(__s390_vary_chpid_on, NULL);
+ for_each_subchannel_staged(s390_subchannel_vary_chpid_on,
+ __s390_vary_chpid_on, &chpid);
+ else
+ for_each_subchannel_staged(s390_subchannel_vary_chpid_off,
+ NULL, &chpid);
+
return 0;
}
@@ -1075,7 +1042,7 @@ chsc_determine_css_characteristics(void)
scsc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
if (!scsc_area) {
- CIO_MSG_EVENT(0, "Was not able to determine available"
+ CIO_MSG_EVENT(0, "Was not able to determine available "
"CHSCs due to no memory.\n");
return -ENOMEM;
}
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 46905345159..60590a12d52 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -23,11 +23,12 @@
#include <asm/reset.h>
#include <asm/ipl.h>
#include <asm/chpid.h>
-#include "airq.h"
+#include <asm/airq.h>
#include "cio.h"
#include "css.h"
#include "chsc.h"
#include "ioasm.h"
+#include "io_sch.h"
#include "blacklist.h"
#include "cio_debug.h"
#include "chp.h"
@@ -56,39 +57,37 @@ __setup ("cio_msg=", cio_setup);
/*
* Function: cio_debug_init
- * Initializes three debug logs (under /proc/s390dbf) for common I/O:
- * - cio_msg logs the messages which are printk'ed when CONFIG_DEBUG_IO is on
+ * Initializes three debug logs for common I/O:
+ * - cio_msg logs generic cio messages
* - cio_trace logs the calling of different functions
- * - cio_crw logs the messages which are printk'ed when CONFIG_DEBUG_CRW is on
- * debug levels depend on CONFIG_DEBUG_IO resp. CONFIG_DEBUG_CRW
+ * - cio_crw logs machine check related cio messages
*/
-static int __init
-cio_debug_init (void)
+static int __init cio_debug_init(void)
{
- cio_debug_msg_id = debug_register ("cio_msg", 16, 4, 16*sizeof (long));
+ cio_debug_msg_id = debug_register("cio_msg", 16, 1, 16 * sizeof(long));
if (!cio_debug_msg_id)
goto out_unregister;
- debug_register_view (cio_debug_msg_id, &debug_sprintf_view);
- debug_set_level (cio_debug_msg_id, 2);
- cio_debug_trace_id = debug_register ("cio_trace", 16, 4, 16);
+ debug_register_view(cio_debug_msg_id, &debug_sprintf_view);
+ debug_set_level(cio_debug_msg_id, 2);
+ cio_debug_trace_id = debug_register("cio_trace", 16, 1, 16);
if (!cio_debug_trace_id)
goto out_unregister;
- debug_register_view (cio_debug_trace_id, &debug_hex_ascii_view);
- debug_set_level (cio_debug_trace_id, 2);
- cio_debug_crw_id = debug_register ("cio_crw", 4, 4, 16*sizeof (long));
+ debug_register_view(cio_debug_trace_id, &debug_hex_ascii_view);
+ debug_set_level(cio_debug_trace_id, 2);
+ cio_debug_crw_id = debug_register("cio_crw", 16, 1, 16 * sizeof(long));
if (!cio_debug_crw_id)
goto out_unregister;
- debug_register_view (cio_debug_crw_id, &debug_sprintf_view);
- debug_set_level (cio_debug_crw_id, 2);
+ debug_register_view(cio_debug_crw_id, &debug_sprintf_view);
+ debug_set_level(cio_debug_crw_id, 4);
return 0;
out_unregister:
if (cio_debug_msg_id)
- debug_unregister (cio_debug_msg_id);
+ debug_unregister(cio_debug_msg_id);
if (cio_debug_trace_id)
- debug_unregister (cio_debug_trace_id);
+ debug_unregister(cio_debug_trace_id);
if (cio_debug_crw_id)
- debug_unregister (cio_debug_crw_id);
+ debug_unregister(cio_debug_crw_id);
printk(KERN_WARNING"cio: could not initialize debugging\n");
return -1;
}
@@ -147,7 +146,7 @@ cio_tpi(void)
spin_lock(sch->lock);
memcpy (&sch->schib.scsw, &irb->scsw, sizeof (struct scsw));
if (sch->driver && sch->driver->irq)
- sch->driver->irq(&sch->dev);
+ sch->driver->irq(sch);
spin_unlock(sch->lock);
irq_exit ();
_local_bh_enable();
@@ -184,33 +183,35 @@ cio_start_key (struct subchannel *sch, /* subchannel structure */
{
char dbf_txt[15];
int ccode;
+ struct orb *orb;
- CIO_TRACE_EVENT (4, "stIO");
- CIO_TRACE_EVENT (4, sch->dev.bus_id);
+ CIO_TRACE_EVENT(4, "stIO");
+ CIO_TRACE_EVENT(4, sch->dev.bus_id);
+ orb = &to_io_private(sch)->orb;
/* sch is always under 2G. */
- sch->orb.intparm = (__u32)(unsigned long)sch;
- sch->orb.fmt = 1;
+ orb->intparm = (u32)(addr_t)sch;
+ orb->fmt = 1;
- sch->orb.pfch = sch->options.prefetch == 0;
- sch->orb.spnd = sch->options.suspend;
- sch->orb.ssic = sch->options.suspend && sch->options.inter;
- sch->orb.lpm = (lpm != 0) ? lpm : sch->lpm;
+ orb->pfch = sch->options.prefetch == 0;
+ orb->spnd = sch->options.suspend;
+ orb->ssic = sch->options.suspend && sch->options.inter;
+ orb->lpm = (lpm != 0) ? lpm : sch->lpm;
#ifdef CONFIG_64BIT
/*
* for 64 bit we always support 64 bit IDAWs with 4k page size only
*/
- sch->orb.c64 = 1;
- sch->orb.i2k = 0;
+ orb->c64 = 1;
+ orb->i2k = 0;
#endif
- sch->orb.key = key >> 4;
+ orb->key = key >> 4;
/* issue "Start Subchannel" */
- sch->orb.cpa = (__u32) __pa (cpa);
- ccode = ssch (sch->schid, &sch->orb);
+ orb->cpa = (__u32) __pa(cpa);
+ ccode = ssch(sch->schid, orb);
/* process condition code */
- sprintf (dbf_txt, "ccode:%d", ccode);
- CIO_TRACE_EVENT (4, dbf_txt);
+ sprintf(dbf_txt, "ccode:%d", ccode);
+ CIO_TRACE_EVENT(4, dbf_txt);
switch (ccode) {
case 0:
@@ -405,8 +406,8 @@ cio_modify (struct subchannel *sch)
/*
* Enable subchannel.
*/
-int
-cio_enable_subchannel (struct subchannel *sch, unsigned int isc)
+int cio_enable_subchannel(struct subchannel *sch, unsigned int isc,
+ u32 intparm)
{
char dbf_txt[15];
int ccode;
@@ -425,7 +426,7 @@ cio_enable_subchannel (struct subchannel *sch, unsigned int isc)
for (retry = 5, ret = 0; retry > 0; retry--) {
sch->schib.pmcw.ena = 1;
sch->schib.pmcw.isc = isc;
- sch->schib.pmcw.intparm = (__u32)(unsigned long)sch;
+ sch->schib.pmcw.intparm = intparm;
ret = cio_modify(sch);
if (ret == -ENODEV)
break;
@@ -567,7 +568,7 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid)
*/
if (sch->st != 0) {
CIO_DEBUG(KERN_INFO, 0,
- "cio: Subchannel 0.%x.%04x reports "
+ "Subchannel 0.%x.%04x reports "
"non-I/O subchannel type %04X\n",
sch->schid.ssid, sch->schid.sch_no, sch->st);
/* We stop here for non-io subchannels. */
@@ -576,11 +577,11 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid)
}
/* Initialization for io subchannels. */
- if (!sch->schib.pmcw.dnv) {
- /* io subchannel but device number is invalid. */
+ if (!css_sch_is_valid(&sch->schib)) {
err = -ENODEV;
goto out;
}
+
/* Devno is valid. */
if (is_blacklisted (sch->schid.ssid, sch->schib.pmcw.dev)) {
/*
@@ -600,7 +601,7 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid)
sch->lpm = sch->schib.pmcw.pam & sch->opm;
CIO_DEBUG(KERN_INFO, 0,
- "cio: Detected device %04x on subchannel 0.%x.%04X"
+ "Detected device %04x on subchannel 0.%x.%04X"
" - PIM = %02X, PAM = %02X, POM = %02X\n",
sch->schib.pmcw.dev, sch->schid.ssid,
sch->schid.sch_no, sch->schib.pmcw.pim,
@@ -680,7 +681,7 @@ do_IRQ (struct pt_regs *regs)
sizeof (irb->scsw));
/* Call interrupt handler if there is one. */
if (sch->driver && sch->driver->irq)
- sch->driver->irq(&sch->dev);
+ sch->driver->irq(sch);
}
if (sch)
spin_unlock(sch->lock);
@@ -698,8 +699,14 @@ do_IRQ (struct pt_regs *regs)
#ifdef CONFIG_CCW_CONSOLE
static struct subchannel console_subchannel;
+static struct io_subchannel_private console_priv;
static int console_subchannel_in_use;
+void *cio_get_console_priv(void)
+{
+ return &console_priv;
+}
+
/*
* busy wait for the next interrupt on the console
*/
@@ -738,9 +745,9 @@ cio_test_for_console(struct subchannel_id schid, void *data)
{
if (stsch_err(schid, &console_subchannel.schib) != 0)
return -ENXIO;
- if (console_subchannel.schib.pmcw.dnv &&
- console_subchannel.schib.pmcw.dev ==
- console_devno) {
+ if ((console_subchannel.schib.pmcw.st == SUBCHANNEL_TYPE_IO) &&
+ console_subchannel.schib.pmcw.dnv &&
+ (console_subchannel.schib.pmcw.dev == console_devno)) {
console_irq = schid.sch_no;
return 1; /* found */
}
@@ -758,6 +765,7 @@ cio_get_console_sch_no(void)
/* VM provided us with the irq number of the console. */
schid.sch_no = console_irq;
if (stsch(schid, &console_subchannel.schib) != 0 ||
+ (console_subchannel.schib.pmcw.st != SUBCHANNEL_TYPE_IO) ||
!console_subchannel.schib.pmcw.dnv)
return -1;
console_devno = console_subchannel.schib.pmcw.dev;
@@ -804,7 +812,7 @@ cio_probe_console(void)
ctl_set_bit(6, 24);
console_subchannel.schib.pmcw.isc = 7;
console_subchannel.schib.pmcw.intparm =
- (__u32)(unsigned long)&console_subchannel;
+ (u32)(addr_t)&console_subchannel;
ret = cio_modify(&console_subchannel);
if (ret) {
console_subchannel_in_use = 0;
@@ -1022,7 +1030,7 @@ static int __reipl_subchannel_match(struct subchannel_id schid, void *data)
if (stsch_reset(schid, &schib))
return -ENXIO;
- if (schib.pmcw.dnv &&
+ if ((schib.pmcw.st == SUBCHANNEL_TYPE_IO) && schib.pmcw.dnv &&
(schib.pmcw.dev == match_id->devid.devno) &&
(schid.ssid == match_id->devid.ssid)) {
match_id->schid = schid;
@@ -1068,6 +1076,8 @@ int __init cio_get_iplinfo(struct cio_iplinfo *iplinfo)
return -ENODEV;
if (stsch(schid, &schib))
return -ENODEV;
+ if (schib.pmcw.st != SUBCHANNEL_TYPE_IO)
+ return -ENODEV;
if (!schib.pmcw.dnv)
return -ENODEV;
iplinfo->devno = schib.pmcw.dev;
diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h
index 7446c39951a..52afa4c784d 100644
--- a/drivers/s390/cio/cio.h
+++ b/drivers/s390/cio/cio.h
@@ -11,32 +11,32 @@
* path management control word
*/
struct pmcw {
- __u32 intparm; /* interruption parameter */
- __u32 qf : 1; /* qdio facility */
- __u32 res0 : 1; /* reserved zeros */
- __u32 isc : 3; /* interruption sublass */
- __u32 res5 : 3; /* reserved zeros */
- __u32 ena : 1; /* enabled */
- __u32 lm : 2; /* limit mode */
- __u32 mme : 2; /* measurement-mode enable */
- __u32 mp : 1; /* multipath mode */
- __u32 tf : 1; /* timing facility */
- __u32 dnv : 1; /* device number valid */
- __u32 dev : 16; /* device number */
- __u8 lpm; /* logical path mask */
- __u8 pnom; /* path not operational mask */
- __u8 lpum; /* last path used mask */
- __u8 pim; /* path installed mask */
- __u16 mbi; /* measurement-block index */
- __u8 pom; /* path operational mask */
- __u8 pam; /* path available mask */
- __u8 chpid[8]; /* CHPID 0-7 (if available) */
- __u32 unused1 : 8; /* reserved zeros */
- __u32 st : 3; /* subchannel type */
- __u32 unused2 : 18; /* reserved zeros */
- __u32 mbfc : 1; /* measurement block format control */
- __u32 xmwme : 1; /* extended measurement word mode enable */
- __u32 csense : 1; /* concurrent sense; can be enabled ...*/
+ u32 intparm; /* interruption parameter */
+ u32 qf : 1; /* qdio facility */
+ u32 res0 : 1; /* reserved zeros */
+ u32 isc : 3; /* interruption sublass */
+ u32 res5 : 3; /* reserved zeros */
+ u32 ena : 1; /* enabled */
+ u32 lm : 2; /* limit mode */
+ u32 mme : 2; /* measurement-mode enable */
+ u32 mp : 1; /* multipath mode */
+ u32 tf : 1; /* timing facility */
+ u32 dnv : 1; /* device number valid */
+ u32 dev : 16; /* device number */
+ u8 lpm; /* logical path mask */
+ u8 pnom; /* path not operational mask */
+ u8 lpum; /* last path used mask */
+ u8 pim; /* path installed mask */
+ u16 mbi; /* measurement-block index */
+ u8 pom; /* path operational mask */
+ u8 pam; /* path available mask */
+ u8 chpid[8]; /* CHPID 0-7 (if available) */
+ u32 unused1 : 8; /* reserved zeros */
+ u32 st : 3; /* subchannel type */
+ u32 unused2 : 18; /* reserved zeros */
+ u32 mbfc : 1; /* measurement block format control */
+ u32 xmwme : 1; /* extended measurement word mode enable */
+ u32 csense : 1; /* concurrent sense; can be enabled ...*/
/* ... per MSCH, however, if facility */
/* ... is not installed, this results */
/* ... in an operand exception. */
@@ -52,31 +52,6 @@ struct schib {
__u8 mda[4]; /* model dependent area */
} __attribute__ ((packed,aligned(4)));
-/*
- * operation request block
- */
-struct orb {
- __u32 intparm; /* interruption parameter */
- __u32 key : 4; /* flags, like key, suspend control, etc. */
- __u32 spnd : 1; /* suspend control */
- __u32 res1 : 1; /* reserved */
- __u32 mod : 1; /* modification control */
- __u32 sync : 1; /* synchronize control */
- __u32 fmt : 1; /* format control */
- __u32 pfch : 1; /* prefetch control */
- __u32 isic : 1; /* initial-status-interruption control */
- __u32 alcc : 1; /* address-limit-checking control */
- __u32 ssic : 1; /* suppress-suspended-interr. control */
- __u32 res2 : 1; /* reserved */
- __u32 c64 : 1; /* IDAW/QDIO 64 bit control */
- __u32 i2k : 1; /* IDAW 2/4kB block size control */
- __u32 lpm : 8; /* logical path mask */
- __u32 ils : 1; /* incorrect length */
- __u32 zero : 6; /* reserved zeros */
- __u32 orbx : 1; /* ORB extension control */
- __u32 cpa; /* channel program address */
-} __attribute__ ((packed,aligned(4)));
-
/* subchannel data structure used by I/O subroutines */
struct subchannel {
struct subchannel_id schid;
@@ -85,7 +60,7 @@ struct subchannel {
enum {
SUBCHANNEL_TYPE_IO = 0,
SUBCHANNEL_TYPE_CHSC = 1,
- SUBCHANNEL_TYPE_MESSAGE = 2,
+ SUBCHANNEL_TYPE_MSG = 2,
SUBCHANNEL_TYPE_ADM = 3,
} st; /* subchannel type */
@@ -99,11 +74,10 @@ struct subchannel {
__u8 lpm; /* logical path mask */
__u8 opm; /* operational path mask */
struct schib schib; /* subchannel information block */
- struct orb orb; /* operation request block */
- struct ccw1 sense_ccw; /* static ccw for sense command */
struct chsc_ssd_info ssd_info; /* subchannel description */
struct device dev; /* entry in device tree */
struct css_driver *driver;
+ void *private; /* private per subchannel type data */
} __attribute__ ((aligned(8)));
#define IO_INTERRUPT_TYPE 0 /* I/O interrupt type */
@@ -111,7 +85,7 @@ struct subchannel {
#define to_subchannel(n) container_of(n, struct subchannel, dev)
extern int cio_validate_subchannel (struct subchannel *, struct subchannel_id);
-extern int cio_enable_subchannel (struct subchannel *, unsigned int);
+extern int cio_enable_subchannel(struct subchannel *, unsigned int, u32);
extern int cio_disable_subchannel (struct subchannel *);
extern int cio_cancel (struct subchannel *);
extern int cio_clear (struct subchannel *);
@@ -125,6 +99,7 @@ extern int cio_get_options (struct subchannel *);
extern int cio_modify (struct subchannel *);
int cio_create_sch_lock(struct subchannel *);
+void do_adapter_IO(void);
/* Use with care. */
#ifdef CONFIG_CCW_CONSOLE
@@ -133,10 +108,12 @@ extern void cio_release_console(void);
extern int cio_is_console(struct subchannel_id);
extern struct subchannel *cio_get_console_subchannel(void);
extern spinlock_t * cio_get_console_lock(void);
+extern void *cio_get_console_priv(void);
#else
#define cio_is_console(schid) 0
#define cio_get_console_subchannel() NULL
-#define cio_get_console_lock() NULL;
+#define cio_get_console_lock() NULL
+#define cio_get_console_priv() NULL
#endif
extern int cio_show_msg;
diff --git a/drivers/s390/cio/cio_debug.h b/drivers/s390/cio/cio_debug.h
index c9bf8989930..d7429ef6c66 100644
--- a/drivers/s390/cio/cio_debug.h
+++ b/drivers/s390/cio/cio_debug.h
@@ -8,20 +8,19 @@ extern debug_info_t *cio_debug_msg_id;
extern debug_info_t *cio_debug_trace_id;
extern debug_info_t *cio_debug_crw_id;
-#define CIO_TRACE_EVENT(imp, txt) do { \
+#define CIO_TRACE_EVENT(imp, txt) do { \
debug_text_event(cio_debug_trace_id, imp, txt); \
} while (0)
-#define CIO_MSG_EVENT(imp, args...) do { \
- debug_sprintf_event(cio_debug_msg_id, imp , ##args); \
+#define CIO_MSG_EVENT(imp, args...) do { \
+ debug_sprintf_event(cio_debug_msg_id, imp , ##args); \
} while (0)
-#define CIO_CRW_EVENT(imp, args...) do { \
- debug_sprintf_event(cio_debug_crw_id, imp , ##args); \
+#define CIO_CRW_EVENT(imp, args...) do { \
+ debug_sprintf_event(cio_debug_crw_id, imp , ##args); \
} while (0)
-static inline void
-CIO_HEX_EVENT(int level, void *data, int length)
+static inline void CIO_HEX_EVENT(int level, void *data, int length)
{
if (unlikely(!cio_debug_trace_id))
return;
@@ -32,9 +31,10 @@ CIO_HEX_EVENT(int level, void *data, int length)
}
}
-#define CIO_DEBUG(printk_level,event_level,msg...) ({ \
- if (cio_show_msg) printk(printk_level msg); \
- CIO_MSG_EVENT (event_level, msg); \
-})
+#define CIO_DEBUG(printk_level, event_level, msg...) do { \
+ if (cio_show_msg) \
+ printk(printk_level "cio: " msg); \
+ CIO_MSG_EVENT(event_level, msg); \
+ } while (0)
#endif
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index c3df2cd009a..3b45bbe6cce 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -51,6 +51,62 @@ for_each_subchannel(int(*fn)(struct subchannel_id, void *), void *data)
return ret;
}
+struct cb_data {
+ void *data;
+ struct idset *set;
+ int (*fn_known_sch)(struct subchannel *, void *);
+ int (*fn_unknown_sch)(struct subchannel_id, void *);
+};
+
+static int call_fn_known_sch(struct device *dev, void *data)
+{
+ struct subchannel *sch = to_subchannel(dev);
+ struct cb_data *cb = data;
+ int rc = 0;
+
+ idset_sch_del(cb->set, sch->schid);
+ if (cb->fn_known_sch)
+ rc = cb->fn_known_sch(sch, cb->data);
+ return rc;
+}
+
+static int call_fn_unknown_sch(struct subchannel_id schid, void *data)
+{
+ struct cb_data *cb = data;
+ int rc = 0;
+
+ if (idset_sch_contains(cb->set, schid))
+ rc = cb->fn_unknown_sch(schid, cb->data);
+ return rc;
+}
+
+int for_each_subchannel_staged(int (*fn_known)(struct subchannel *, void *),
+ int (*fn_unknown)(struct subchannel_id,
+ void *), void *data)
+{
+ struct cb_data cb;
+ int rc;
+
+ cb.set = idset_sch_new();
+ if (!cb.set)
+ return -ENOMEM;
+ idset_fill(cb.set);
+ cb.data = data;
+ cb.fn_known_sch = fn_known;
+ cb.fn_unknown_sch = fn_unknown;
+ /* Process registered subchannels. */
+ rc = bus_for_each_dev(&css_bus_type, NULL, &cb, call_fn_known_sch);
+ if (rc)
+ goto out;
+ /* Process unregistered subchannels. */
+ if (fn_unknown)
+ rc = for_each_subchannel(call_fn_unknown_sch, &cb);
+out:
+ idset_free(cb.set);
+
+ return rc;
+}
+
static struct subchannel *
css_alloc_subchannel(struct subchannel_id schid)
{
@@ -77,7 +133,7 @@ css_alloc_subchannel(struct subchannel_id schid)
* This is fine even on 64bit since the subchannel is always located
* under 2G.
*/
- sch->schib.pmcw.intparm = (__u32)(unsigned long)sch;
+ sch->schib.pmcw.intparm = (u32)(addr_t)sch;
ret = cio_modify(sch);
if (ret) {
kfree(sch->lock);
@@ -237,11 +293,25 @@ get_subchannel_by_schid(struct subchannel_id schid)
return dev ? to_subchannel(dev) : NULL;
}
+/**
+ * css_sch_is_valid() - check if a subchannel is valid
+ * @schib: subchannel information block for the subchannel
+ */
+int css_sch_is_valid(struct schib *schib)
+{
+ if ((schib->pmcw.st == SUBCHANNEL_TYPE_IO) && !schib->pmcw.dnv)
+ return 0;
+ return 1;
+}
+EXPORT_SYMBOL_GPL(css_sch_is_valid);
+
static int css_get_subchannel_status(struct subchannel *sch)
{
struct schib schib;
- if (stsch(sch->schid, &schib) || !schib.pmcw.dnv)
+ if (stsch(sch->schid, &schib))
+ return CIO_GONE;
+ if (!css_sch_is_valid(&schib))
return CIO_GONE;
if (sch->schib.pmcw.dnv && (schib.pmcw.dev != sch->schib.pmcw.dev))
return CIO_REVALIDATE;
@@ -293,7 +363,7 @@ static int css_evaluate_known_subchannel(struct subchannel *sch, int slow)
action = UNREGISTER;
if (sch->driver && sch->driver->notify) {
spin_unlock_irqrestore(sch->lock, flags);
- ret = sch->driver->notify(&sch->dev, event);
+ ret = sch->driver->notify(sch, event);
spin_lock_irqsave(sch->lock, flags);
if (ret)
action = NONE;
@@ -349,7 +419,7 @@ static int css_evaluate_new_subchannel(struct subchannel_id schid, int slow)
/* Will be done on the slow path. */
return -EAGAIN;
}
- if (stsch_err(schid, &schib) || !schib.pmcw.dnv) {
+ if (stsch_err(schid, &schib) || !css_sch_is_valid(&schib)) {
/* Unusable - ignore. */
return 0;
}
@@ -388,20 +458,56 @@ static int __init slow_subchannel_init(void)
return 0;
}
-static void css_slow_path_func(struct work_struct *unused)
+static int slow_eval_known_fn(struct subchannel *sch, void *data)
{
- struct subchannel_id schid;
+ int eval;
+ int rc;
- CIO_TRACE_EVENT(4, "slowpath");
spin_lock_irq(&slow_subchannel_lock);
- init_subchannel_id(&schid);
- while (idset_sch_get_first(slow_subchannel_set, &schid)) {
- idset_sch_del(slow_subchannel_set, schid);
- spin_unlock_irq(&slow_subchannel_lock);
- css_evaluate_subchannel(schid, 1);
- spin_lock_irq(&slow_subchannel_lock);
+ eval = idset_sch_contains(slow_subchannel_set, sch->schid);
+ idset_sch_del(slow_subchannel_set, sch->schid);
+ spin_unlock_irq(&slow_subchannel_lock);
+ if (eval) {
+ rc = css_evaluate_known_subchannel(sch, 1);
+ if (rc == -EAGAIN)
+ css_schedule_eval(sch->schid);
}
+ return 0;
+}
+
+static int slow_eval_unknown_fn(struct subchannel_id schid, void *data)
+{
+ int eval;
+ int rc = 0;
+
+ spin_lock_irq(&slow_subchannel_lock);
+ eval = idset_sch_contains(slow_subchannel_set, schid);
+ idset_sch_del(slow_subchannel_set, schid);
spin_unlock_irq(&slow_subchannel_lock);
+ if (eval) {
+ rc = css_evaluate_new_subchannel(schid, 1);
+ switch (rc) {
+ case -EAGAIN:
+ css_schedule_eval(schid);
+ rc = 0;
+ break;
+ case -ENXIO:
+ case -ENOMEM:
+ case -EIO:
+ /* These should abort looping */
+ break;
+ default:
+ rc = 0;
+ }
+ }
+ return rc;
+}
+
+static void css_slow_path_func(struct work_struct *unused)
+{
+ CIO_TRACE_EVENT(4, "slowpath");
+ for_each_subchannel_staged(slow_eval_known_fn, slow_eval_unknown_fn,
+ NULL);
}
static DECLARE_WORK(slow_path_work, css_slow_path_func);
@@ -430,7 +536,6 @@ void css_schedule_eval_all(void)
/* Reprobe subchannel if unregistered. */
static int reprobe_subchannel(struct subchannel_id schid, void *data)
{
- struct subchannel *sch;
int ret;
CIO_MSG_EVENT(6, "cio: reprobe 0.%x.%04x\n",
@@ -438,13 +543,6 @@ static int reprobe_subchannel(struct subchannel_id schid, void *data)
if (need_reprobe)
return -EAGAIN;
- sch = get_subchannel_by_schid(schid);
- if (sch) {
- /* Already known. */
- put_device(&sch->dev);
- return 0;
- }
-
ret = css_probe_device(schid);
switch (ret) {
case 0:
@@ -472,7 +570,7 @@ static void reprobe_all(struct work_struct *unused)
/* Make sure initial subchannel scan is done. */
wait_event(ccw_device_init_wq,
atomic_read(&ccw_device_init_count) == 0);
- ret = for_each_subchannel(reprobe_subchannel, NULL);
+ ret = for_each_subchannel_staged(NULL, reprobe_subchannel, NULL);
CIO_MSG_EVENT(2, "reprobe done (rc=%d, need_reprobe=%d)\n", ret,
need_reprobe);
@@ -787,8 +885,8 @@ int sch_is_pseudo_sch(struct subchannel *sch)
static int
css_bus_match (struct device *dev, struct device_driver *drv)
{
- struct subchannel *sch = container_of (dev, struct subchannel, dev);
- struct css_driver *driver = container_of (drv, struct css_driver, drv);
+ struct subchannel *sch = to_subchannel(dev);
+ struct css_driver *driver = to_cssdriver(drv);
if (sch->st == driver->subchannel_type)
return 1;
@@ -796,32 +894,36 @@ css_bus_match (struct device *dev, struct device_driver *drv)
return 0;
}
-static int
-css_probe (struct device *dev)
+static int css_probe(struct device *dev)
{
struct subchannel *sch;
+ int ret;
sch = to_subchannel(dev);
- sch->driver = container_of (dev->driver, struct css_driver, drv);
- return (sch->driver->probe ? sch->driver->probe(sch) : 0);
+ sch->driver = to_cssdriver(dev->driver);
+ ret = sch->driver->probe ? sch->driver->probe(sch) : 0;
+ if (ret)
+ sch->driver = NULL;
+ return ret;
}
-static int
-css_remove (struct device *dev)
+static int css_remove(struct device *dev)
{
struct subchannel *sch;
+ int ret;
sch = to_subchannel(dev);
- return (sch->driver->remove ? sch->driver->remove(sch) : 0);
+ ret = sch->driver->remove ? sch->driver->remove(sch) : 0;
+ sch->driver = NULL;
+ return ret;
}
-static void
-css_shutdown (struct device *dev)
+static void css_shutdown(struct device *dev)
{
struct subchannel *sch;
sch = to_subchannel(dev);
- if (sch->driver->shutdown)
+ if (sch->driver && sch->driver->shutdown)
sch->driver->shutdown(sch);
}
@@ -833,6 +935,34 @@ struct bus_type css_bus_type = {
.shutdown = css_shutdown,
};
+/**
+ * css_driver_register - register a css driver
+ * @cdrv: css driver to register
+ *
+ * This is mainly a wrapper around driver_register that sets name
+ * and bus_type in the embedded struct device_driver correctly.
+ */
+int css_driver_register(struct css_driver *cdrv)
+{
+ cdrv->drv.name = cdrv->name;
+ cdrv->drv.bus = &css_bus_type;
+ cdrv->drv.owner = cdrv->owner;
+ return driver_register(&cdrv->drv);
+}
+EXPORT_SYMBOL_GPL(css_driver_register);
+
+/**
+ * css_driver_unregister - unregister a css driver
+ * @cdrv: css driver to unregister
+ *
+ * This is a wrapper around driver_unregister.
+ */
+void css_driver_unregister(struct css_driver *cdrv)
+{
+ driver_unregister(&cdrv->drv);
+}
+EXPORT_SYMBOL_GPL(css_driver_unregister);
+
subsys_initcall(init_channel_subsystem);
MODULE_LICENSE("GPL");
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index 81215ef3243..b7055452355 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -58,64 +58,6 @@ struct pgid {
__u32 tod_high; /* high word TOD clock */
} __attribute__ ((packed));
-#define MAX_CIWS 8
-
-/*
- * sense-id response buffer layout
- */
-struct senseid {
- /* common part */
- __u8 reserved; /* always 0x'FF' */
- __u16 cu_type; /* control unit type */
- __u8 cu_model; /* control unit model */
- __u16 dev_type; /* device type */
- __u8 dev_model; /* device model */
- __u8 unused; /* padding byte */
- /* extended part */
- struct ciw ciw[MAX_CIWS]; /* variable # of CIWs */
-} __attribute__ ((packed,aligned(4)));
-
-struct ccw_device_private {
- struct ccw_device *cdev;
- struct subchannel *sch;
- int state; /* device state */
- atomic_t onoff;
- unsigned long registered;
- struct ccw_dev_id dev_id; /* device id */
- struct subchannel_id schid; /* subchannel number */
- __u8 imask; /* lpm mask for SNID/SID/SPGID */
- int iretry; /* retry counter SNID/SID/SPGID */
- struct {
- unsigned int fast:1; /* post with "channel end" */
- unsigned int repall:1; /* report every interrupt status */
- unsigned int pgroup:1; /* do path grouping */
- unsigned int force:1; /* allow forced online */
- } __attribute__ ((packed)) options;
- struct {
- unsigned int pgid_single:1; /* use single path for Set PGID */
- unsigned int esid:1; /* Ext. SenseID supported by HW */
- unsigned int dosense:1; /* delayed SENSE required */
- unsigned int doverify:1; /* delayed path verification */
- unsigned int donotify:1; /* call notify function */
- unsigned int recog_done:1; /* dev. recog. complete */
- unsigned int fake_irb:1; /* deliver faked irb */
- unsigned int intretry:1; /* retry internal operation */
- } __attribute__((packed)) flags;
- unsigned long intparm; /* user interruption parameter */
- struct qdio_irq *qdio_data;
- struct irb irb; /* device status */
- struct senseid senseid; /* SenseID info */
- struct pgid pgid[8]; /* path group IDs per chpid*/
- struct ccw1 iccws[2]; /* ccws for SNID/SID/SPGID commands */
- struct work_struct kick_work;
- wait_queue_head_t wait_q;
- struct timer_list timer;
- void *cmb; /* measurement information */
- struct list_head cmb_list; /* list of measured devices */
- u64 cmb_start_time; /* clock value of cmb reset */
- void *cmb_wait; /* deferred cmb enable/disable */
-};
-
/*
* A css driver handles all subchannels of one type.
* Currently, we only care about I/O subchannels (type 0), these
@@ -123,25 +65,35 @@ struct ccw_device_private {
*/
struct subchannel;
struct css_driver {
+ struct module *owner;
unsigned int subchannel_type;
struct device_driver drv;
- void (*irq)(struct device *);
- int (*notify)(struct device *, int);
- void (*verify)(struct device *);
- void (*termination)(struct device *);
+ void (*irq)(struct subchannel *);
+ int (*notify)(struct subchannel *, int);
+ void (*verify)(struct subchannel *);
+ void (*termination)(struct subchannel *);
int (*probe)(struct subchannel *);
int (*remove)(struct subchannel *);
void (*shutdown)(struct subchannel *);
+ const char *name;
};
+#define to_cssdriver(n) container_of(n, struct css_driver, drv)
+
/*
* all css_drivers have the css_bus_type
*/
extern struct bus_type css_bus_type;
+extern int css_driver_register(struct css_driver *);
+extern void css_driver_unregister(struct css_driver *);
+
extern void css_sch_device_unregister(struct subchannel *);
extern struct subchannel * get_subchannel_by_schid(struct subchannel_id);
extern int css_init_done;
+int for_each_subchannel_staged(int (*fn_known)(struct subchannel *, void *),
+ int (*fn_unknown)(struct subchannel_id,
+ void *), void *data);
extern int for_each_subchannel(int(*fn)(struct subchannel_id, void *), void *);
extern void css_process_crw(int, int);
extern void css_reiterate_subchannels(void);
@@ -188,6 +140,8 @@ void css_schedule_eval(struct subchannel_id schid);
void css_schedule_eval_all(void);
int sch_is_pseudo_sch(struct subchannel *);
+struct schib;
+int css_sch_is_valid(struct schib *);
extern struct workqueue_struct *slow_path_wq;
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 74f6b539974..d35dc3f25d0 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -17,6 +17,7 @@
#include <linux/list.h>
#include <linux/device.h>
#include <linux/workqueue.h>
+#include <linux/timer.h>
#include <asm/ccwdev.h>
#include <asm/cio.h>
@@ -28,6 +29,12 @@
#include "css.h"
#include "device.h"
#include "ioasm.h"
+#include "io_sch.h"
+
+static struct timer_list recovery_timer;
+static spinlock_t recovery_lock;
+static int recovery_phase;
+static const unsigned long recovery_delay[] = { 3, 30, 300 };
/******************* bus type handling ***********************/
@@ -115,19 +122,18 @@ static int ccw_uevent(struct device *dev, struct kobj_uevent_env *env)
struct bus_type ccw_bus_type;
-static int io_subchannel_probe (struct subchannel *);
-static int io_subchannel_remove (struct subchannel *);
-static int io_subchannel_notify(struct device *, int);
-static void io_subchannel_verify(struct device *);
-static void io_subchannel_ioterm(struct device *);
+static void io_subchannel_irq(struct subchannel *);
+static int io_subchannel_probe(struct subchannel *);
+static int io_subchannel_remove(struct subchannel *);
+static int io_subchannel_notify(struct subchannel *, int);
+static void io_subchannel_verify(struct subchannel *);
+static void io_subchannel_ioterm(struct subchannel *);
static void io_subchannel_shutdown(struct subchannel *);
static struct css_driver io_subchannel_driver = {
+ .owner = THIS_MODULE,
.subchannel_type = SUBCHANNEL_TYPE_IO,
- .drv = {
- .name = "io_subchannel",
- .bus = &css_bus_type,
- },
+ .name = "io_subchannel",
.irq = io_subchannel_irq,
.notify = io_subchannel_notify,
.verify = io_subchannel_verify,
@@ -142,6 +148,8 @@ struct workqueue_struct *ccw_device_notify_work;
wait_queue_head_t ccw_device_init_wq;
atomic_t ccw_device_init_count;
+static void recovery_func(unsigned long data);
+
static int __init
init_ccw_bus_type (void)
{
@@ -149,6 +157,7 @@ init_ccw_bus_type (void)
init_waitqueue_head(&ccw_device_init_wq);
atomic_set(&ccw_device_init_count, 0);
+ setup_timer(&recovery_timer, recovery_func, 0);
ccw_device_work = create_singlethread_workqueue("cio");
if (!ccw_device_work)
@@ -166,7 +175,8 @@ init_ccw_bus_type (void)
if ((ret = bus_register (&ccw_bus_type)))
goto out_err;
- if ((ret = driver_register(&io_subchannel_driver.drv)))
+ ret = css_driver_register(&io_subchannel_driver);
+ if (ret)
goto out_err;
wait_event(ccw_device_init_wq,
@@ -186,7 +196,7 @@ out_err:
static void __exit
cleanup_ccw_bus_type (void)
{
- driver_unregister(&io_subchannel_driver.drv);
+ css_driver_unregister(&io_subchannel_driver);
bus_unregister(&ccw_bus_type);
destroy_workqueue(ccw_device_notify_work);
destroy_workqueue(ccw_device_work);
@@ -773,7 +783,7 @@ static void sch_attach_device(struct subchannel *sch,
{
css_update_ssd_info(sch);
spin_lock_irq(sch->lock);
- sch->dev.driver_data = cdev;
+ sch_set_cdev(sch, cdev);
cdev->private->schid = sch->schid;
cdev->ccwlock = sch->lock;
device_trigger_reprobe(sch);
@@ -795,7 +805,7 @@ static void sch_attach_disconnected_device(struct subchannel *sch,
put_device(&other_sch->dev);
return;
}
- other_sch->dev.driver_data = NULL;
+ sch_set_cdev(other_sch, NULL);
/* No need to keep a subchannel without ccw device around. */
css_sch_device_unregister(other_sch);
put_device(&other_sch->dev);
@@ -831,12 +841,12 @@ static void sch_create_and_recog_new_device(struct subchannel *sch)
return;
}
spin_lock_irq(sch->lock);
- sch->dev.driver_data = cdev;
+ sch_set_cdev(sch, cdev);
spin_unlock_irq(sch->lock);
/* Start recognition for the new ccw device. */
if (io_subchannel_recog(cdev, sch)) {
spin_lock_irq(sch->lock);
- sch->dev.driver_data = NULL;
+ sch_set_cdev(sch, NULL);
spin_unlock_irq(sch->lock);
if (cdev->dev.release)
cdev->dev.release(&cdev->dev);
@@ -940,7 +950,7 @@ io_subchannel_register(struct work_struct *work)
cdev->private->dev_id.devno, ret);
put_device(&cdev->dev);
spin_lock_irqsave(sch->lock, flags);
- sch->dev.driver_data = NULL;
+ sch_set_cdev(sch, NULL);
spin_unlock_irqrestore(sch->lock, flags);
kfree (cdev->private);
kfree (cdev);
@@ -1022,7 +1032,7 @@ io_subchannel_recog(struct ccw_device *cdev, struct subchannel *sch)
int rc;
struct ccw_device_private *priv;
- sch->dev.driver_data = cdev;
+ sch_set_cdev(sch, cdev);
sch->driver = &io_subchannel_driver;
cdev->ccwlock = sch->lock;
@@ -1082,7 +1092,7 @@ static void ccw_device_move_to_sch(struct work_struct *work)
}
if (former_parent) {
spin_lock_irq(former_parent->lock);
- former_parent->dev.driver_data = NULL;
+ sch_set_cdev(former_parent, NULL);
spin_unlock_irq(former_parent->lock);
css_sch_device_unregister(former_parent);
/* Reset intparm to zeroes. */
@@ -1096,6 +1106,18 @@ out:
put_device(&cdev->dev);
}
+static void io_subchannel_irq(struct subchannel *sch)
+{
+ struct ccw_device *cdev;
+
+ cdev = sch_get_cdev(sch);
+
+ CIO_TRACE_EVENT(3, "IRQ");
+ CIO_TRACE_EVENT(3, sch->dev.bus_id);
+ if (cdev)
+ dev_fsm_event(cdev, DEV_EVENT_INTERRUPT);
+}
+
static int
io_subchannel_probe (struct subchannel *sch)
{
@@ -1104,13 +1126,13 @@ io_subchannel_probe (struct subchannel *sch)
unsigned long flags;
struct ccw_dev_id dev_id;
- if (sch->dev.driver_data) {
+ cdev = sch_get_cdev(sch);
+ if (cdev) {
/*
* This subchannel already has an associated ccw_device.
* Register it and exit. This happens for all early
* device, e.g. the console.
*/
- cdev = sch->dev.driver_data;
cdev->dev.groups = ccwdev_attr_groups;
device_initialize(&cdev->dev);
ccw_device_register(cdev);
@@ -1132,6 +1154,11 @@ io_subchannel_probe (struct subchannel *sch)
*/
dev_id.devno = sch->schib.pmcw.dev;
dev_id.ssid = sch->schid.ssid;
+ /* Allocate I/O subchannel private data. */
+ sch->private = kzalloc(sizeof(struct io_subchannel_private),
+ GFP_KERNEL | GFP_DMA);
+ if (!sch->private)
+ return -ENOMEM;
cdev = get_disc_ccwdev_by_dev_id(&dev_id, NULL);
if (!cdev)
cdev = get_orphaned_ccwdev_by_dev_id(to_css(sch->dev.parent),
@@ -1149,16 +1176,18 @@ io_subchannel_probe (struct subchannel *sch)
return 0;
}
cdev = io_subchannel_create_ccwdev(sch);
- if (IS_ERR(cdev))
+ if (IS_ERR(cdev)) {
+ kfree(sch->private);
return PTR_ERR(cdev);
-
+ }
rc = io_subchannel_recog(cdev, sch);
if (rc) {
spin_lock_irqsave(sch->lock, flags);
- sch->dev.driver_data = NULL;
+ sch_set_cdev(sch, NULL);
spin_unlock_irqrestore(sch->lock, flags);
if (cdev->dev.release)
cdev->dev.release(&cdev->dev);
+ kfree(sch->private);
}
return rc;
@@ -1170,25 +1199,25 @@ io_subchannel_remove (struct subchannel *sch)
struct ccw_device *cdev;
unsigned long flags;
- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return 0;
- cdev = sch->dev.driver_data;
/* Set ccw device to not operational and drop reference. */
spin_lock_irqsave(cdev->ccwlock, flags);
- sch->dev.driver_data = NULL;
+ sch_set_cdev(sch, NULL);
cdev->private->state = DEV_STATE_NOT_OPER;
spin_unlock_irqrestore(cdev->ccwlock, flags);
ccw_device_unregister(cdev);
put_device(&cdev->dev);
+ kfree(sch->private);
return 0;
}
-static int
-io_subchannel_notify(struct device *dev, int event)
+static int io_subchannel_notify(struct subchannel *sch, int event)
{
struct ccw_device *cdev;
- cdev = dev->driver_data;
+ cdev = sch_get_cdev(sch);
if (!cdev)
return 0;
if (!cdev->drv)
@@ -1198,22 +1227,20 @@ io_subchannel_notify(struct device *dev, int event)
return cdev->drv->notify ? cdev->drv->notify(cdev, event) : 0;
}
-static void
-io_subchannel_verify(struct device *dev)
+static void io_subchannel_verify(struct subchannel *sch)
{
struct ccw_device *cdev;
- cdev = dev->driver_data;
+ cdev = sch_get_cdev(sch);
if (cdev)
dev_fsm_event(cdev, DEV_EVENT_VERIFY);
}
-static void
-io_subchannel_ioterm(struct device *dev)
+static void io_subchannel_ioterm(struct subchannel *sch)
{
struct ccw_device *cdev;
- cdev = dev->driver_data;
+ cdev = sch_get_cdev(sch);
if (!cdev)
return;
/* Internal I/O will be retried by the interrupt handler. */
@@ -1231,7 +1258,7 @@ io_subchannel_shutdown(struct subchannel *sch)
struct ccw_device *cdev;
int ret;
- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);
if (cio_is_console(sch->schid))
return;
@@ -1271,6 +1298,9 @@ ccw_device_console_enable (struct ccw_device *cdev, struct subchannel *sch)
{
int rc;
+ /* Attach subchannel private data. */
+ sch->private = cio_get_console_priv();
+ memset(sch->private, 0, sizeof(struct io_subchannel_private));
/* Initialize the ccw_device structure. */
cdev->dev.parent= &sch->dev;
rc = io_subchannel_recog(cdev, sch);
@@ -1456,6 +1486,7 @@ int ccw_driver_register(struct ccw_driver *cdriver)
drv->bus = &ccw_bus_type;
drv->name = cdriver->name;
+ drv->owner = cdriver->owner;
return driver_register(drv);
}
@@ -1481,6 +1512,60 @@ ccw_device_get_subchannel_id(struct ccw_device *cdev)
return sch->schid;
}
+static int recovery_check(struct device *dev, void *data)
+{
+ struct ccw_device *cdev = to_ccwdev(dev);
+ int *redo = data;
+
+ spin_lock_irq(cdev->ccwlock);
+ switch (cdev->private->state) {
+ case DEV_STATE_DISCONNECTED:
+ CIO_MSG_EVENT(3, "recovery: trigger 0.%x.%04x\n",
+ cdev->private->dev_id.ssid,
+ cdev->private->dev_id.devno);
+ dev_fsm_event(cdev, DEV_EVENT_VERIFY);
+ *redo = 1;
+ break;
+ case DEV_STATE_DISCONNECTED_SENSE_ID:
+ *redo = 1;
+ break;
+ }
+ spin_unlock_irq(cdev->ccwlock);
+
+ return 0;
+}
+
+static void recovery_func(unsigned long data)
+{
+ int redo = 0;
+
+ bus_for_each_dev(&ccw_bus_type, NULL, &redo, recovery_check);
+ if (redo) {
+ spin_lock_irq(&recovery_lock);
+ if (!timer_pending(&recovery_timer)) {
+ if (recovery_phase < ARRAY_SIZE(recovery_delay) - 1)
+ recovery_phase++;
+ mod_timer(&recovery_timer, jiffies +
+ recovery_delay[recovery_phase] * HZ);
+ }
+ spin_unlock_irq(&recovery_lock);
+ } else
+ CIO_MSG_EVENT(2, "recovery: end\n");
+}
+
+void ccw_device_schedule_recovery(void)
+{
+ unsigned long flags;
+
+ CIO_MSG_EVENT(2, "recovery: schedule\n");
+ spin_lock_irqsave(&recovery_lock, flags);
+ if (!timer_pending(&recovery_timer) || (recovery_phase != 0)) {
+ recovery_phase = 0;
+ mod_timer(&recovery_timer, jiffies + recovery_delay[0] * HZ);
+ }
+ spin_unlock_irqrestore(&recovery_lock, flags);
+}
+
MODULE_LICENSE("GPL");
EXPORT_SYMBOL(ccw_device_set_online);
EXPORT_SYMBOL(ccw_device_set_offline);
diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h
index 0d408960043..d40a2ffaa00 100644
--- a/drivers/s390/cio/device.h
+++ b/drivers/s390/cio/device.h
@@ -5,6 +5,8 @@
#include <asm/atomic.h>
#include <linux/wait.h>
+#include "io_sch.h"
+
/*
* states of the device statemachine
*/
@@ -74,7 +76,6 @@ extern struct workqueue_struct *ccw_device_notify_work;
extern wait_queue_head_t ccw_device_init_wq;
extern atomic_t ccw_device_init_count;
-void io_subchannel_irq (struct device *pdev);
void io_subchannel_recog_done(struct ccw_device *cdev);
int ccw_device_cancel_halt_clear(struct ccw_device *);
@@ -87,6 +88,8 @@ int ccw_device_recognition(struct ccw_device *);
int ccw_device_online(struct ccw_device *);
int ccw_device_offline(struct ccw_device *);
+void ccw_device_schedule_recovery(void);
+
/* Function prototypes for device status and basic sense stuff. */
void ccw_device_accumulate_irb(struct ccw_device *, struct irb *);
void ccw_device_accumulate_basic_sense(struct ccw_device *, struct irb *);
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index bfad421cda6..4b92c84fb43 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -25,14 +25,16 @@
#include "ioasm.h"
#include "chp.h"
+static int timeout_log_enabled;
+
int
device_is_online(struct subchannel *sch)
{
struct ccw_device *cdev;
- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return 0;
- cdev = sch->dev.driver_data;
return (cdev->private->state == DEV_STATE_ONLINE);
}
@@ -41,9 +43,9 @@ device_is_disconnected(struct subchannel *sch)
{
struct ccw_device *cdev;
- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return 0;
- cdev = sch->dev.driver_data;
return (cdev->private->state == DEV_STATE_DISCONNECTED ||
cdev->private->state == DEV_STATE_DISCONNECTED_SENSE_ID);
}
@@ -53,19 +55,21 @@ device_set_disconnected(struct subchannel *sch)
{
struct ccw_device *cdev;
- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return;
- cdev = sch->dev.driver_data;
ccw_device_set_timeout(cdev, 0);
cdev->private->flags.fake_irb = 0;
cdev->private->state = DEV_STATE_DISCONNECTED;
+ if (cdev->online)
+ ccw_device_schedule_recovery();
}
void device_set_intretry(struct subchannel *sch)
{
struct ccw_device *cdev;
- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);
if (!cdev)
return;
cdev->private->flags.intretry = 1;
@@ -75,13 +79,62 @@ int device_trigger_verify(struct subchannel *sch)
{
struct ccw_device *cdev;
- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);
if (!cdev || !cdev->online)
return -EINVAL;
dev_fsm_event(cdev, DEV_EVENT_VERIFY);
return 0;
}
+static int __init ccw_timeout_log_setup(char *unused)
+{
+ timeout_log_enabled = 1;
+ return 1;
+}
+
+__setup("ccw_timeout_log", ccw_timeout_log_setup);
+
+static void ccw_timeout_log(struct ccw_device *cdev)
+{
+ struct schib schib;
+ struct subchannel *sch;
+ struct io_subchannel_private *private;
+ int cc;
+
+ sch = to_subchannel(cdev->dev.parent);
+ private = to_io_private(sch);
+ cc = stsch(sch->schid, &schib);
+
+ printk(KERN_WARNING "cio: ccw device timeout occurred at %llx, "
+ "device information:\n", get_clock());
+ printk(KERN_WARNING "cio: orb:\n");
+ print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1,
+ &private->orb, sizeof(private->orb), 0);
+ printk(KERN_WARNING "cio: ccw device bus id: %s\n", cdev->dev.bus_id);
+ printk(KERN_WARNING "cio: subchannel bus id: %s\n", sch->dev.bus_id);
+ printk(KERN_WARNING "cio: subchannel lpm: %02x, opm: %02x, "
+ "vpm: %02x\n", sch->lpm, sch->opm, sch->vpm);
+
+ if ((void *)(addr_t)private->orb.cpa == &private->sense_ccw ||
+ (void *)(addr_t)private->orb.cpa == cdev->private->iccws)
+ printk(KERN_WARNING "cio: last channel program (intern):\n");
+ else
+ printk(KERN_WARNING "cio: last channel program:\n");
+
+ print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1,
+ (void *)(addr_t)private->orb.cpa,
+ sizeof(struct ccw1), 0);
+ printk(KERN_WARNING "cio: ccw device state: %d\n",
+ cdev->private->state);
+ printk(KERN_WARNING "cio: store subchannel returned: cc=%d\n", cc);
+ printk(KERN_WARNING "cio: schib:\n");
+ print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1,
+ &schib, sizeof(schib), 0);
+ printk(KERN_WARNING "cio: ccw device flags:\n");
+ print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1,
+ &cdev->private->flags, sizeof(cdev->private->flags), 0);
+}
+
/*
* Timeout function. It just triggers a DEV_EVENT_TIMEOUT.
*/
@@ -92,6 +145,8 @@ ccw_device_timeout(unsigned long data)
cdev = (struct ccw_device *) data;
spin_lock_irq(cdev->ccwlock);
+ if (timeout_log_enabled)
+ ccw_timeout_log(cdev);
dev_fsm_event(cdev, DEV_EVENT_TIMEOUT);
spin_unlock_irq(cdev->ccwlock);
}
@@ -122,9 +177,9 @@ device_kill_pending_timer(struct subchannel *sch)
{
struct ccw_device *cdev;
- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return;
- cdev = sch->dev.driver_data;
ccw_device_set_timeout(cdev, 0);
}
@@ -268,7 +323,7 @@ ccw_device_recog_done(struct ccw_device *cdev, int state)
switch (state) {
case DEV_STATE_NOT_OPER:
CIO_DEBUG(KERN_WARNING, 2,
- "cio: SenseID : unknown device %04x on subchannel "
+ "SenseID : unknown device %04x on subchannel "
"0.%x.%04x\n", cdev->private->dev_id.devno,
sch->schid.ssid, sch->schid.sch_no);
break;
@@ -294,7 +349,7 @@ ccw_device_recog_done(struct ccw_device *cdev, int state)
}
/* Issue device info message. */
CIO_DEBUG(KERN_INFO, 2,
- "cio: SenseID : device 0.%x.%04x reports: "
+ "SenseID : device 0.%x.%04x reports: "
"CU Type/Mod = %04X/%02X, Dev Type/Mod = "
"%04X/%02X\n",
cdev->private->dev_id.ssid,
@@ -304,7 +359,7 @@ ccw_device_recog_done(struct ccw_device *cdev, int state)
break;
case DEV_STATE_BOXED:
CIO_DEBUG(KERN_WARNING, 2,
- "cio: SenseID : boxed device %04x on subchannel "
+ "SenseID : boxed device %04x on subchannel "
"0.%x.%04x\n", cdev->private->dev_id.devno,
sch->schid.ssid, sch->schid.sch_no);
break;
@@ -349,7 +404,7 @@ ccw_device_oper_notify(struct work_struct *work)
sch = to_subchannel(cdev->dev.parent);
if (sch->driver && sch->driver->notify) {
spin_unlock_irqrestore(cdev->ccwlock, flags);
- ret = sch->driver->notify(&sch->dev, CIO_OPER);
+ ret = sch->driver->notify(sch, CIO_OPER);
spin_lock_irqsave(cdev->ccwlock, flags);
} else
ret = 0;
@@ -389,7 +444,7 @@ ccw_device_done(struct ccw_device *cdev, int state)
if (state == DEV_STATE_BOXED)
CIO_DEBUG(KERN_WARNING, 2,
- "cio: Boxed device %04x on subchannel %04x\n",
+ "Boxed device %04x on subchannel %04x\n",
cdev->private->dev_id.devno, sch->schid.sch_no);
if (cdev->private->flags.donotify) {
@@ -500,7 +555,8 @@ ccw_device_recognition(struct ccw_device *cdev)
(cdev->private->state != DEV_STATE_BOXED))
return -EINVAL;
sch = to_subchannel(cdev->dev.parent);
- ret = cio_enable_subchannel(sch, sch->schib.pmcw.isc);
+ ret = cio_enable_subchannel(sch, sch->schib.pmcw.isc,
+ (u32)(addr_t)sch);
if (ret != 0)
/* Couldn't enable the subchannel for i/o. Sick device. */
return ret;
@@ -587,9 +643,10 @@ ccw_device_verify_done(struct ccw_device *cdev, int err)
default:
/* Reset oper notify indication after verify error. */
cdev->private->flags.donotify = 0;
- if (cdev->online)
+ if (cdev->online) {
+ ccw_device_set_timeout(cdev, 0);
dev_fsm_event(cdev, DEV_EVENT_NOTOPER);
- else
+ } else
ccw_device_done(cdev, DEV_STATE_NOT_OPER);
break;
}
@@ -610,7 +667,8 @@ ccw_device_online(struct ccw_device *cdev)
sch = to_subchannel(cdev->dev.parent);
if (css_init_done && !get_device(&cdev->dev))
return -ENODEV;
- ret = cio_enable_subchannel(sch, sch->schib.pmcw.isc);
+ ret = cio_enable_subchannel(sch, sch->schib.pmcw.isc,
+ (u32)(addr_t)sch);
if (ret != 0) {
/* Couldn't enable the subchannel for i/o. Sick device. */
if (ret == -ENODEV)
@@ -937,7 +995,7 @@ void device_kill_io(struct subchannel *sch)
int ret;
struct ccw_device *cdev;
- cdev = sch->dev.driver_data;
+ cdev = sch_get_cdev(sch);
ret = ccw_device_cancel_halt_clear(cdev);
if (ret == -EBUSY) {
ccw_device_set_timeout(cdev, 3*HZ);
@@ -990,7 +1048,8 @@ ccw_device_start_id(struct ccw_device *cdev, enum dev_event dev_event)
struct subchannel *sch;
sch = to_subchannel(cdev->dev.parent);
- if (cio_enable_subchannel(sch, sch->schib.pmcw.isc) != 0)
+ if (cio_enable_subchannel(sch, sch->schib.pmcw.isc,
+ (u32)(addr_t)sch) != 0)
/* Couldn't enable the subchannel for i/o. Sick device. */
return;
@@ -1006,9 +1065,9 @@ device_trigger_reprobe(struct subchannel *sch)
{
struct ccw_device *cdev;
- if (!sch->dev.driver_data)
+ cdev = sch_get_cdev(sch);
+ if (!cdev)
return;
- cdev = sch->dev.driver_data;
if (cdev->private->state != DEV_STATE_DISCONNECTED)
return;
@@ -1028,7 +1087,7 @@ device_trigger_reprobe(struct subchannel *sch)
sch->schib.pmcw.ena = 0;
if ((sch->lpm & (sch->lpm - 1)) != 0)
sch->schib.pmcw.mp = 1;
- sch->schib.pmcw.intparm = (__u32)(unsigned long)sch;
+ sch->schib.pmcw.intparm = (u32)(addr_t)sch;
/* We should also udate ssd info, but this has to wait. */
/* Check if this is another device which appeared on the same sch. */
if (sch->schib.pmcw.dev != cdev->private->dev_id.devno) {
@@ -1223,21 +1282,4 @@ fsm_func_t *dev_jumptable[NR_DEV_STATES][NR_DEV_EVENTS] = {
},
};
-/*
- * io_subchannel_irq is called for "real" interrupts or for status
- * pending conditions on msch.
- */
-void
-io_subchannel_irq (struct device *pdev)
-{
- struct ccw_device *cdev;
-
- cdev = to_subchannel(pdev)->dev.driver_data;
-
- CIO_TRACE_EVENT (3, "IRQ");
- CIO_TRACE_EVENT (3, pdev->bus_id);
- if (cdev)
- dev_fsm_event(cdev, DEV_EVENT_INTERRUPT);
-}
-
EXPORT_SYMBOL_GPL(ccw_device_set_timeout);
diff --git a/drivers/s390/cio/device_id.c b/drivers/s390/cio/device_id.c
index 156f3f9786b..918b8b89cf9 100644
--- a/drivers/s390/cio/device_id.c
+++ b/drivers/s390/cio/device_id.c
@@ -24,6 +24,7 @@
#include "css.h"
#include "device.h"
#include "ioasm.h"
+#include "io_sch.h"
/*
* Input :
@@ -219,11 +220,13 @@ ccw_device_check_sense_id(struct ccw_device *cdev)
return -EAGAIN;
}
if (irb->scsw.cc == 3) {
- if ((sch->orb.lpm &
- sch->schib.pmcw.pim & sch->schib.pmcw.pam) != 0)
+ u8 lpm;
+
+ lpm = to_io_private(sch)->orb.lpm;
+ if ((lpm & sch->schib.pmcw.pim & sch->schib.pmcw.pam) != 0)
CIO_MSG_EVENT(2, "SenseID : path %02X for device %04x "
"on subchannel 0.%x.%04x is "
- "'not operational'\n", sch->orb.lpm,
+ "'not operational'\n", lpm,
cdev->private->dev_id.devno,
sch->schid.ssid, sch->schid.sch_no);
return -EACCES;
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index 7fd2dadc329..49b58eb0fab 100644
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -501,7 +501,7 @@ ccw_device_stlck(struct ccw_device *cdev)
return -ENOMEM;
}
spin_lock_irqsave(sch->lock, flags);
- ret = cio_enable_subchannel(sch, 3);
+ ret = cio_enable_subchannel(sch, 3, (u32)(addr_t)sch);
if (ret)
goto out_unlock;
/*
diff --git a/drivers/s390/cio/device_pgid.c b/drivers/s390/cio/device_pgid.c
index cb1879a9681..c52449a1f9f 100644
--- a/drivers/s390/cio/device_pgid.c
+++ b/drivers/s390/cio/device_pgid.c
@@ -22,6 +22,7 @@
#include "css.h"
#include "device.h"
#include "ioasm.h"
+#include "io_sch.h"
/*
* Helper function called from interrupt context to decide whether an
@@ -155,10 +156,13 @@ __ccw_device_check_sense_pgid(struct ccw_device *cdev)
return -EAGAIN;
}
if (irb->scsw.cc == 3) {
+ u8 lpm;
+
+ lpm = to_io_private(sch)->orb.lpm;
CIO_MSG_EVENT(2, "SNID - Device %04x on Subchannel 0.%x.%04x,"
" lpm %02X, became 'not operational'\n",
cdev->private->dev_id.devno, sch->schid.ssid,
- sch->schid.sch_no, sch->orb.lpm);
+ sch->schid.sch_no, lpm);
return -EACCES;
}
i = 8 - ffs(cdev->private->imask);
diff --git a/drivers/s390/cio/device_status.c b/drivers/s390/cio/device_status.c
index aa96e675259..ebe0848cfe3 100644
--- a/drivers/s390/cio/device_status.c
+++ b/drivers/s390/cio/device_status.c
@@ -20,6 +20,7 @@
#include "css.h"
#include "device.h"
#include "ioasm.h"
+#include "io_sch.h"
/*
* Check for any kind of channel or interface control check but don't
@@ -310,6 +311,7 @@ int
ccw_device_do_sense(struct ccw_device *cdev, struct irb *irb)
{
struct subchannel *sch;
+ struct ccw1 *sense_ccw;
sch = to_subchannel(cdev->dev.parent);
@@ -326,15 +328,16 @@ ccw_device_do_sense(struct ccw_device *cdev, struct irb *irb)
/*
* We have ending status but no sense information. Do a basic sense.
*/
- sch->sense_ccw.cmd_code = CCW_CMD_BASIC_SENSE;
- sch->sense_ccw.cda = (__u32) __pa(cdev->private->irb.ecw);
- sch->sense_ccw.count = SENSE_MAX_COUNT;
- sch->sense_ccw.flags = CCW_FLAG_SLI;
+ sense_ccw = &to_io_private(sch)->sense_ccw;
+ sense_ccw->cmd_code = CCW_CMD_BASIC_SENSE;
+ sense_ccw->cda = (__u32) __pa(cdev->private->irb.ecw);
+ sense_ccw->count = SENSE_MAX_COUNT;
+ sense_ccw->flags = CCW_FLAG_SLI;
/* Reset internal retry indication. */
cdev->private->flags.intretry = 0;
- return cio_start (sch, &sch->sense_ccw, 0xff);
+ return cio_start(sch, sense_ccw, 0xff);
}
/*
diff --git a/drivers/s390/cio/io_sch.h b/drivers/s390/cio/io_sch.h
new file mode 100644
index 00000000000..8c613160bfc
--- /dev/null
+++ b/drivers/s390/cio/io_sch.h
@@ -0,0 +1,163 @@
+#ifndef S390_IO_SCH_H
+#define S390_IO_SCH_H
+
+#include "schid.h"
+
+/*
+ * operation request block
+ */
+struct orb {
+ u32 intparm; /* interruption parameter */
+ u32 key : 4; /* flags, like key, suspend control, etc. */
+ u32 spnd : 1; /* suspend control */
+ u32 res1 : 1; /* reserved */
+ u32 mod : 1; /* modification control */
+ u32 sync : 1; /* synchronize control */
+ u32 fmt : 1; /* format control */
+ u32 pfch : 1; /* prefetch control */
+ u32 isic : 1; /* initial-status-interruption control */
+ u32 alcc : 1; /* address-limit-checking control */
+ u32 ssic : 1; /* suppress-suspended-interr. control */
+ u32 res2 : 1; /* reserved */
+ u32 c64 : 1; /* IDAW/QDIO 64 bit control */
+ u32 i2k : 1; /* IDAW 2/4kB block size control */
+ u32 lpm : 8; /* logical path mask */
+ u32 ils : 1; /* incorrect length */
+ u32 zero : 6; /* reserved zeros */
+ u32 orbx : 1; /* ORB extension control */
+ u32 cpa; /* channel program address */
+} __attribute__ ((packed, aligned(4)));
+
+struct io_subchannel_private {
+ struct orb orb; /* operation request block */
+ struct ccw1 sense_ccw; /* static ccw for sense command */
+} __attribute__ ((aligned(8)));
+
+#define to_io_private(n) ((struct io_subchannel_private *)n->private)
+#define sch_get_cdev(n) (dev_get_drvdata(&n->dev))
+#define sch_set_cdev(n, c) (dev_set_drvdata(&n->dev, c))
+
+#define MAX_CIWS 8
+
+/*
+ * sense-id response buffer layout
+ */
+struct senseid {
+ /* common part */
+ u8 reserved; /* always 0x'FF' */
+ u16 cu_type; /* control unit type */
+ u8 cu_model; /* control unit model */
+ u16 dev_type; /* device type */
+ u8 dev_model; /* device model */
+ u8 unused; /* padding byte */
+ /* extended part */
+ struct ciw ciw[MAX_CIWS]; /* variable # of CIWs */
+} __attribute__ ((packed, aligned(4)));
+
+struct ccw_device_private {
+ struct ccw_device *cdev;
+ struct subchannel *sch;
+ int state; /* device state */
+ atomic_t onoff;
+ unsigned long registered;
+ struct ccw_dev_id dev_id; /* device id */
+ struct subchannel_id schid; /* subchannel number */
+ u8 imask; /* lpm mask for SNID/SID/SPGID */
+ int iretry; /* retry counter SNID/SID/SPGID */
+ struct {
+ unsigned int fast:1; /* post with "channel end" */
+ unsigned int repall:1; /* report every interrupt status */
+ unsigned int pgroup:1; /* do path grouping */
+ unsigned int force:1; /* allow forced online */
+ } __attribute__ ((packed)) options;
+ struct {
+ unsigned int pgid_single:1; /* use single path for Set PGID */
+ unsigned int esid:1; /* Ext. SenseID supported by HW */
+ unsigned int dosense:1; /* delayed SENSE required */
+ unsigned int doverify:1; /* delayed path verification */
+ unsigned int donotify:1; /* call notify function */
+ unsigned int recog_done:1; /* dev. recog. complete */
+ unsigned int fake_irb:1; /* deliver faked irb */
+ unsigned int intretry:1; /* retry internal operation */
+ } __attribute__((packed)) flags;
+ unsigned long intparm; /* user interruption parameter */
+ struct qdio_irq *qdio_data;
+ struct irb irb; /* device status */
+ struct senseid senseid; /* SenseID info */
+ struct pgid pgid[8]; /* path group IDs per chpid*/
+ struct ccw1 iccws[2]; /* ccws for SNID/SID/SPGID commands */
+ struct work_struct kick_work;
+ wait_queue_head_t wait_q;
+ struct timer_list timer;
+ void *cmb; /* measurement information */
+ struct list_head cmb_list; /* list of measured devices */
+ u64 cmb_start_time; /* clock value of cmb reset */
+ void *cmb_wait; /* deferred cmb enable/disable */
+};
+
+static inline int ssch(struct subchannel_id schid, volatile struct orb *addr)
+{
+ register struct subchannel_id reg1 asm("1") = schid;
+ int ccode;
+
+ asm volatile(
+ " ssch 0(%2)\n"
+ " ipm %0\n"
+ " srl %0,28"
+ : "=d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc");
+ return ccode;
+}
+
+static inline int rsch(struct subchannel_id schid)
+{
+ register struct subchannel_id reg1 asm("1") = schid;
+ int ccode;
+
+ asm volatile(
+ " rsch\n"
+ " ipm %0\n"
+ " srl %0,28"
+ : "=d" (ccode) : "d" (reg1) : "cc");
+ return ccode;
+}
+
+static inline int csch(struct subchannel_id schid)
+{
+ register struct subchannel_id reg1 asm("1") = schid;
+ int ccode;
+
+ asm volatile(
+ " csch\n"
+ " ipm %0\n"
+ " srl %0,28"
+ : "=d" (ccode) : "d" (reg1) : "cc");
+ return ccode;
+}
+
+static inline int hsch(struct subchannel_id schid)
+{
+ register struct subchannel_id reg1 asm("1") = schid;
+ int ccode;
+
+ asm volatile(
+ " hsch\n"
+ " ipm %0\n"
+ " srl %0,28"
+ : "=d" (ccode) : "d" (reg1) : "cc");
+ return ccode;
+}
+
+static inline int xsch(struct subchannel_id schid)
+{
+ register struct subchannel_id reg1 asm("1") = schid;
+ int ccode;
+
+ asm volatile(
+ " .insn rre,0xb2760000,%1,0\n"
+ " ipm %0\n"
+ " srl %0,28"
+ : "=d" (ccode) : "d" (reg1) : "cc");
+ return ccode;
+}
+
+#endif
diff --git a/drivers/s390/cio/ioasm.h b/drivers/s390/cio/ioasm.h
index 7153dd95908..652ea3625f9 100644
--- a/drivers/s390/cio/ioasm.h
+++ b/drivers/s390/cio/ioasm.h
@@ -109,72 +109,6 @@ static inline int tpi( volatile struct tpi_info *addr)
return ccode;
}
-static inline int ssch(struct subchannel_id schid,
- volatile struct orb *addr)
-{
- register struct subchannel_id reg1 asm ("1") = schid;
- int ccode;
-
- asm volatile(
- " ssch 0(%2)\n"
- " ipm %0\n"
- " srl %0,28"
- : "=d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc");
- return ccode;
-}
-
-static inline int rsch(struct subchannel_id schid)
-{
- register struct subchannel_id reg1 asm ("1") = schid;
- int ccode;
-
- asm volatile(
- " rsch\n"
- " ipm %0\n"
- " srl %0,28"
- : "=d" (ccode) : "d" (reg1) : "cc");
- return ccode;
-}
-
-static inline int csch(struct subchannel_id schid)
-{
- register struct subchannel_id reg1 asm ("1") = schid;
- int ccode;
-
- asm volatile(
- " csch\n"
- " ipm %0\n"
- " srl %0,28"
- : "=d" (ccode) : "d" (reg1) : "cc");
- return ccode;
-}
-
-static inline int hsch(struct subchannel_id schid)
-{
- register struct subchannel_id reg1 asm ("1") = schid;
- int ccode;
-
- asm volatile(
- " hsch\n"
- " ipm %0\n"
- " srl %0,28"
- : "=d" (ccode) : "d" (reg1) : "cc");
- return ccode;
-}
-
-static inline int xsch(struct subchannel_id schid)
-{
- register struct subchannel_id reg1 asm ("1") = schid;
- int ccode;
-
- asm volatile(
- " .insn rre,0xb2760000,%1,0\n"
- " ipm %0\n"
- " srl %0,28"
- : "=d" (ccode) : "d" (reg1) : "cc");
- return ccode;
-}
-
static inline int chsc(void *chsc_area)
{
typedef struct { char _[4096]; } addr_type;
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index 40a3208c7cf..e2a781b6b21 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -48,11 +48,11 @@
#include <asm/debug.h>
#include <asm/s390_rdev.h>
#include <asm/qdio.h>
+#include <asm/airq.h>
#include "cio.h"
#include "css.h"
#include "device.h"
-#include "airq.h"
#include "qdio.h"
#include "ioasm.h"
#include "chsc.h"
@@ -96,7 +96,7 @@ static debug_info_t *qdio_dbf_slsb_in;
static volatile struct qdio_q *tiq_list=NULL; /* volatile as it could change
during a while loop */
static DEFINE_SPINLOCK(ttiq_list_lock);
-static int register_thinint_result;
+static void *tiqdio_ind;
static void tiqdio_tl(unsigned long);
static DECLARE_TASKLET(tiqdio_tasklet,tiqdio_tl,0);
@@ -399,7 +399,7 @@ qdio_get_indicator(void)
{
int i;
- for (i=1;i<INDICATORS_PER_CACHELINE;i++)
+ for (i = 0; i < INDICATORS_PER_CACHELINE; i++)
if (!indicator_used[i]) {
indicator_used[i]=1;
return indicators+i;
@@ -1408,8 +1408,7 @@ __tiqdio_inbound_processing(struct qdio_q *q, int spare_ind_was_set)
if (q->hydra_gives_outbound_pcis) {
if (!q->siga_sync_done_on_thinints) {
SYNC_MEMORY_ALL;
- } else if ((!q->siga_sync_done_on_outb_tis)&&
- (q->hydra_gives_outbound_pcis)) {
+ } else if (!q->siga_sync_done_on_outb_tis) {
SYNC_MEMORY_ALL_OUTB;
}
} else {
@@ -1911,8 +1910,7 @@ qdio_fill_thresholds(struct qdio_irq *irq_ptr,
}
}
-static int
-tiqdio_thinint_handler(void)
+static void tiqdio_thinint_handler(void *ind, void *drv_data)
{
QDIO_DBF_TEXT4(0,trace,"thin_int");
@@ -1925,7 +1923,6 @@ tiqdio_thinint_handler(void)
tiqdio_clear_global_summary();
tiqdio_inbound_checks();
- return 0;
}
static void
@@ -2445,7 +2442,7 @@ tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
real_addr_dev_st_chg_ind=0;
} else {
real_addr_local_summary_bit=
- virt_to_phys((volatile void *)indicators);
+ virt_to_phys((volatile void *)tiqdio_ind);
real_addr_dev_st_chg_ind=
virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind);
}
@@ -3740,23 +3737,25 @@ static void
tiqdio_register_thinints(void)
{
char dbf_text[20];
- register_thinint_result=
- s390_register_adapter_interrupt(&tiqdio_thinint_handler);
- if (register_thinint_result) {
- sprintf(dbf_text,"regthn%x",(register_thinint_result&0xff));
+
+ tiqdio_ind =
+ s390_register_adapter_interrupt(&tiqdio_thinint_handler, NULL);
+ if (IS_ERR(tiqdio_ind)) {
+ sprintf(dbf_text, "regthn%lx", PTR_ERR(tiqdio_ind));
QDIO_DBF_TEXT0(0,setup,dbf_text);
QDIO_PRINT_ERR("failed to register adapter handler " \
- "(rc=%i).\nAdapter interrupts might " \
+ "(rc=%li).\nAdapter interrupts might " \
"not work. Continuing.\n",
- register_thinint_result);
+ PTR_ERR(tiqdio_ind));
+ tiqdio_ind = NULL;
}
}
static void
tiqdio_unregister_thinints(void)
{
- if (!register_thinint_result)
- s390_unregister_adapter_interrupt(&tiqdio_thinint_handler);
+ if (tiqdio_ind)
+ s390_unregister_adapter_interrupt(tiqdio_ind);
}
static int
@@ -3768,8 +3767,8 @@ qdio_get_qdio_memory(void)
for (i=1;i<INDICATORS_PER_CACHELINE;i++)
indicator_used[i]=0;
indicators = kzalloc(sizeof(__u32)*(INDICATORS_PER_CACHELINE),
- GFP_KERNEL);
- if (!indicators)
+ GFP_KERNEL);
+ if (!indicators)
return -ENOMEM;
return 0;
}
@@ -3780,7 +3779,6 @@ qdio_release_qdio_memory(void)
kfree(indicators);
}
-
static void
qdio_unregister_dbf_views(void)
{
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index 6d7aad18f6f..37870e4e938 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -57,7 +57,7 @@
of the queue to 0 */
#define QDIO_ESTABLISH_TIMEOUT (1*HZ)
-#define QDIO_ACTIVATE_TIMEOUT ((5*HZ)>>10)
+#define QDIO_ACTIVATE_TIMEOUT (5*HZ)
#define QDIO_CLEANUP_CLEAR_TIMEOUT (20*HZ)
#define QDIO_CLEANUP_HALT_TIMEOUT (10*HZ)
#define QDIO_FORCE_CHECK_TIMEOUT (10*HZ)
diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c
index 3561982749e..c3076217871 100644
--- a/drivers/s390/net/claw.c
+++ b/drivers/s390/net/claw.c
@@ -2416,7 +2416,7 @@ init_ccw_bk(struct net_device *dev)
privptr->p_buff_pages_perwrite);
#endif
if (p_buff==NULL) {
- printk(KERN_INFO "%s:%s __get_free_pages"
+ printk(KERN_INFO "%s:%s __get_free_pages "
"for writes buf failed : get is for %d pages\n",
dev->name,
__FUNCTION__,
diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c
index 0fd663b23d7..7bfe8d707a3 100644
--- a/drivers/s390/net/lcs.c
+++ b/drivers/s390/net/lcs.c
@@ -1115,7 +1115,7 @@ list_modified:
rc = lcs_send_setipm(card, ipm);
spin_lock_irqsave(&card->ipm_lock, flags);
if (rc) {
- PRINT_INFO("Adding multicast address failed."
+ PRINT_INFO("Adding multicast address failed. "
"Table possibly full!\n");
/* store ipm in failed list -> will be added
* to ipm_list again, so a retry will be done
diff --git a/drivers/s390/net/netiucv.c b/drivers/s390/net/netiucv.c
index d6e93f15440..f3d893cfe61 100644
--- a/drivers/s390/net/netiucv.c
+++ b/drivers/s390/net/netiucv.c
@@ -198,8 +198,7 @@ struct iucv_connection {
/**
* Linked list of all connection structs.
*/
-static struct list_head iucv_connection_list =
- LIST_HEAD_INIT(iucv_connection_list);
+static LIST_HEAD(iucv_connection_list);
static DEFINE_RWLOCK(iucv_connection_rwlock);
/**
diff --git a/drivers/s390/net/qeth_proc.c b/drivers/s390/net/qeth_proc.c
index f1ff165a5e0..46ecd03a597 100644
--- a/drivers/s390/net/qeth_proc.c
+++ b/drivers/s390/net/qeth_proc.c
@@ -146,7 +146,7 @@ qeth_procfile_seq_show(struct seq_file *s, void *it)
return 0;
}
-static struct seq_operations qeth_procfile_seq_ops = {
+static const struct seq_operations qeth_procfile_seq_ops = {
.start = qeth_procfile_seq_start,
.stop = qeth_procfile_seq_stop,
.next = qeth_procfile_seq_next,
@@ -264,7 +264,7 @@ qeth_perf_procfile_seq_show(struct seq_file *s, void *it)
return 0;
}
-static struct seq_operations qeth_perf_procfile_seq_ops = {
+static const struct seq_operations qeth_perf_procfile_seq_ops = {
.start = qeth_procfile_seq_start,
.stop = qeth_procfile_seq_stop,
.next = qeth_procfile_seq_next,
diff --git a/drivers/s390/net/smsgiucv.c b/drivers/s390/net/smsgiucv.c
index 47bb47b4858..8735a415a11 100644
--- a/drivers/s390/net/smsgiucv.c
+++ b/drivers/s390/net/smsgiucv.c
@@ -42,7 +42,7 @@ MODULE_DESCRIPTION ("Linux for S/390 IUCV special message driver");
static struct iucv_path *smsg_path;
static DEFINE_SPINLOCK(smsg_list_lock);
-static struct list_head smsg_list = LIST_HEAD_INIT(smsg_list);
+static LIST_HEAD(smsg_list);
static int smsg_path_pending(struct iucv_path *, u8 ipvmid[8], u8 ipuser[16]);
static void smsg_message_pending(struct iucv_path *, struct iucv_message *);
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index 4f86c0e1296..2dc8110ebf7 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -1286,7 +1286,7 @@ zfcp_erp_strategy_do_action(struct zfcp_erp_action *erp_action)
* note: no lock in subsequent strategy routines
* (this allows these routine to call schedule, e.g.
* kmalloc with such flags or qdio_initialize & friends)
- * Note: in case of timeout, the seperate strategies will fail
+ * Note: in case of timeout, the separate strategies will fail
* anyhow. No need for a special action. Even worse, a nameserver
* failure would not wake up waiting ports without the call.
*/
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index fe57941ab55..e45f85f7c7e 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -502,7 +502,7 @@ zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *fsf_req)
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_SQ_NO_RECOM:
- ZFCP_LOG_NORMAL("bug: No recommendation could be given for a"
+ ZFCP_LOG_NORMAL("bug: No recommendation could be given for a "
"problem on the adapter %s "
"Stopping all operations on this adapter. ",
zfcp_get_busid_by_adapter(fsf_req->adapter));
@@ -813,7 +813,7 @@ zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *fsf_req)
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
if (!port || (port->d_id != (status_buffer->d_id & ZFCP_DID_MASK))) {
- ZFCP_LOG_NORMAL("bug: Reopen port indication received for"
+ ZFCP_LOG_NORMAL("bug: Reopen port indication received for "
"nonexisting port with d_id 0x%06x on "
"adapter %s. Ignored.\n",
status_buffer->d_id & ZFCP_DID_MASK,
@@ -2281,7 +2281,7 @@ zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
&lock_flags, &fsf_req);
if (retval) {
ZFCP_LOG_INFO("error: Out of resources. Could not create an "
- "exchange port data request for"
+ "exchange port data request for "
"the adapter %s.\n",
zfcp_get_busid_by_adapter(adapter));
write_unlock_irqrestore(&adapter->request_queue.queue_lock,
@@ -2340,7 +2340,7 @@ zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter,
0, NULL, &lock_flags, &fsf_req);
if (retval) {
ZFCP_LOG_INFO("error: Out of resources. Could not create an "
- "exchange port data request for"
+ "exchange port data request for "
"the adapter %s.\n",
zfcp_get_busid_by_adapter(adapter));
write_unlock_irqrestore(&adapter->request_queue.queue_lock,
@@ -4725,7 +4725,7 @@ zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags,
/* allocate new FSF request */
fsf_req = zfcp_fsf_req_alloc(pool, req_flags);
if (unlikely(NULL == fsf_req)) {
- ZFCP_LOG_DEBUG("error: Could not put an FSF request into"
+ ZFCP_LOG_DEBUG("error: Could not put an FSF request into "
"the outbound (send) queue.\n");
ret = -ENOMEM;
goto failed_fsf_req;
diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c
index 51d92b196ee..22fdc17e0d0 100644
--- a/drivers/s390/scsi/zfcp_qdio.c
+++ b/drivers/s390/scsi/zfcp_qdio.c
@@ -529,7 +529,7 @@ zfcp_qdio_sbals_wipe(struct zfcp_fsf_req *fsf_req)
/**
- * zfcp_qdio_sbale_fill - set address and lenght in current SBALE
+ * zfcp_qdio_sbale_fill - set address and length in current SBALE
* on request_queue
*/
static void
diff --git a/drivers/serial/21285.c b/drivers/serial/21285.c
index facb6785561..6a48dfa1efe 100644
--- a/drivers/serial/21285.c
+++ b/drivers/serial/21285.c
@@ -277,6 +277,8 @@ serial21285_set_termios(struct uart_port *port, struct ktermios *termios,
if (termios->c_iflag & INPCK)
port->read_status_mask |= RXSTAT_FRAME | RXSTAT_PARITY;
+ tty_encode_baud_rate(tty, baud, baud);
+
/*
* Which character status flags should we ignore?
*/
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 6f475b60986..ac2a3ef28d5 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -442,7 +442,8 @@ static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart)
set_bfin_dma_config(DIR_READ, DMA_FLOW_STOP,
INTR_ON_BUF,
DIMENSION_LINEAR,
- DATA_SIZE_8));
+ DATA_SIZE_8,
+ DMA_SYNC_RESTART));
set_dma_start_addr(uart->tx_dma_channel, (unsigned long)(xmit->buf+xmit->tail));
set_dma_x_count(uart->tx_dma_channel, uart->tx_count);
set_dma_x_modify(uart->tx_dma_channel, 1);
@@ -689,7 +690,8 @@ static int bfin_serial_startup(struct uart_port *port)
set_dma_config(uart->rx_dma_channel,
set_bfin_dma_config(DIR_WRITE, DMA_FLOW_AUTO,
INTR_ON_ROW, DIMENSION_2D,
- DATA_SIZE_8));
+ DATA_SIZE_8,
+ DMA_SYNC_RESTART));
set_dma_x_count(uart->rx_dma_channel, DMA_RX_XCOUNT);
set_dma_x_modify(uart->rx_dma_channel, 1);
set_dma_y_count(uart->rx_dma_channel, DMA_RX_YCOUNT);
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index f81d08d6538..77a3759d6fc 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -308,7 +308,7 @@ config USB_S3C2410_DEBUG
config USB_GADGET_AT91
boolean "AT91 USB Device Port"
- depends on ARCH_AT91 && !ARCH_AT91SAM9RL
+ depends on ARCH_AT91 && !ARCH_AT91SAM9RL && !ARCH_AT91CAP9
select USB_GADGET_SELECTED
help
Many Atmel AT91 processors (such as the AT91RM2000) have a
diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
index 5cfa3d1c441..74e1f4be10b 100644
--- a/drivers/usb/host/ohci-omap.c
+++ b/drivers/usb/host/ohci-omap.c
@@ -47,7 +47,7 @@
#endif
#ifdef CONFIG_TPS65010
-#include <asm/arch/tps65010.h>
+#include <linux/i2c/tps65010.h>
#else
#define LOW 0
diff --git a/drivers/usb/host/ohci-pnx4008.c b/drivers/usb/host/ohci-pnx4008.c
index ca2a6abbc11..6c52c66b659 100644
--- a/drivers/usb/host/ohci-pnx4008.c
+++ b/drivers/usb/host/ohci-pnx4008.c
@@ -112,9 +112,9 @@ static int isp1301_detach(struct i2c_client *client);
static int isp1301_command(struct i2c_client *client, unsigned int cmd,
void *arg);
-static unsigned short normal_i2c[] =
+static const unsigned short normal_i2c[] =
{ ISP1301_I2C_ADDR, ISP1301_I2C_ADDR + 1, I2C_CLIENT_END };
-static unsigned short dummy_i2c_addrlist[] = { I2C_CLIENT_END };
+static const unsigned short dummy_i2c_addrlist[] = { I2C_CLIENT_END };
static struct i2c_client_address_data addr_data = {
.normal_i2c = normal_i2c,
@@ -123,7 +123,6 @@ static struct i2c_client_address_data addr_data = {
};
struct i2c_driver isp1301_driver = {
- .id = I2C_DRIVERID_I2CDEV, /* Fake Id */
.class = I2C_CLASS_HWMON,
.attach_adapter = isp1301_probe,
.detach_client = isp1301_detach,
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 5b3dbcfcda4..758435f8a6f 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -889,7 +889,7 @@ config FB_S1D13XXX
config FB_ATMEL
tristate "AT91/AT32 LCD Controller support"
- depends on FB && (ARCH_AT91SAM9261 || ARCH_AT91SAM9263 || AVR32)
+ depends on FB && (ARCH_AT91SAM9261 || ARCH_AT91SAM9263 || ARCH_AT91SAM9RL || ARCH_AT91CAP9 || AVR32)
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index 7c30cc8df71..f8e71114750 100644
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c
@@ -30,7 +30,7 @@
#define ATMEL_LCDC_CVAL_DEFAULT 0xc8
#define ATMEL_LCDC_DMA_BURST_LEN 8
-#if defined(CONFIG_ARCH_AT91SAM9263)
+#if defined(CONFIG_ARCH_AT91SAM9263) || defined(CONFIG_ARCH_AT91CAP9)
#define ATMEL_LCDC_FIFO_SIZE 2048
#else
#define ATMEL_LCDC_FIFO_SIZE 512
diff --git a/drivers/video/bf54x-lq043fb.c b/drivers/video/bf54x-lq043fb.c
index 74d11c31898..c8e7427a0bc 100644
--- a/drivers/video/bf54x-lq043fb.c
+++ b/drivers/video/bf54x-lq043fb.c
@@ -224,7 +224,8 @@ static int config_dma(struct bfin_bf54xfb_info *fbi)
set_dma_config(CH_EPPI0,
set_bfin_dma_config(DIR_READ, DMA_FLOW_AUTO,
INTR_DISABLE, DIMENSION_2D,
- DATA_SIZE_32));
+ DATA_SIZE_32,
+ DMA_NOSYNC_KEEP_DMA_BUF));
set_dma_x_count(CH_EPPI0, (LCD_X_RES * LCD_BPP) / DMA_BUS_SIZE);
set_dma_x_modify(CH_EPPI0, DMA_BUS_SIZE / 8);
set_dma_y_count(CH_EPPI0, LCD_Y_RES);
@@ -263,8 +264,7 @@ static int request_ports(struct bfin_bf54xfb_info *fbi)
}
}
- gpio_direction_output(disp);
- gpio_set_value(disp, 1);
+ gpio_direction_output(disp, 1);
return 0;
}
diff --git a/drivers/video/matrox/matroxfb_maven.c b/drivers/video/matrox/matroxfb_maven.c
index 49cd53e46c0..0cd58f84fb4 100644
--- a/drivers/video/matrox/matroxfb_maven.c
+++ b/drivers/video/matrox/matroxfb_maven.c
@@ -1232,7 +1232,7 @@ static int maven_shutdown_client(struct i2c_client* clnt) {
return 0;
}
-static unsigned short normal_i2c[] = { MAVEN_I2CID, I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { MAVEN_I2CID, I2C_CLIENT_END };
I2C_CLIENT_INSMOD;
static struct i2c_driver maven_driver;
diff --git a/drivers/video/omap/lcd_h3.c b/drivers/video/omap/lcd_h3.c
index c604d935c18..31e978349a8 100644
--- a/drivers/video/omap/lcd_h3.c
+++ b/drivers/video/omap/lcd_h3.c
@@ -21,9 +21,9 @@
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/i2c/tps65010.h>
#include <asm/arch/gpio.h>
-#include <asm/arch/tps65010.h>
#include <asm/arch/omapfb.h>
#define MODULE_NAME "omapfb-lcd_h3"
diff --git a/drivers/w1/masters/ds2482.c b/drivers/w1/masters/ds2482.c
index d93eb626b2f..0fd5820d5c6 100644
--- a/drivers/w1/masters/ds2482.c
+++ b/drivers/w1/masters/ds2482.c
@@ -29,7 +29,7 @@
* However, the chip cannot be detected without doing an i2c write,
* so use the force module parameter.
*/
-static unsigned short normal_i2c[] = {I2C_CLIENT_END};
+static const unsigned short normal_i2c[] = { I2C_CLIENT_END };
/**
* Insmod parameters