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author <jgarzik@pretzel.yyz.us>2005-06-03 23:54:56 -0400
committerJeff Garzik <jgarzik@pobox.com>2005-06-03 23:54:56 -0400
commit73561695b2e77473e353a5ae63bab81ed5098d8e (patch)
treed039affaa54d38985e41566e4d62e0aa6a170287 /drivers/scsi
parent6f2f38128170814e151cfedf79532e19cd179567 (diff)
parent8be3de3fd8469154a2b3e18a4712032dac5b4a53 (diff)
Automatic merge of /spare/repo/linux-2.6/.git branch HEAD
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/ahci.c3
-rw-r--r--drivers/scsi/aic7xxx/aic7770_osm.c52
-rw-r--r--drivers/scsi/aic7xxx/aic79xx_osm.c2
-rw-r--r--drivers/scsi/aic7xxx/aic7xxx_osm.c1403
-rw-r--r--drivers/scsi/aic7xxx/aic7xxx_osm.h169
-rw-r--r--drivers/scsi/aic7xxx/aic7xxx_osm_pci.c11
-rw-r--r--drivers/scsi/aic7xxx/aic7xxx_proc.c13
-rw-r--r--drivers/scsi/aic7xxx/aiclib.c1
-rw-r--r--drivers/scsi/ata_piix.c18
-rw-r--r--drivers/scsi/ide-scsi.c86
-rw-r--r--drivers/scsi/libata-core.c510
-rw-r--r--drivers/scsi/libata-scsi.c7
-rw-r--r--drivers/scsi/libata.h2
-rw-r--r--drivers/scsi/qla2xxx/qla_os.c24
-rw-r--r--drivers/scsi/sata_nv.c2
-rw-r--r--drivers/scsi/sata_promise.c3
-rw-r--r--drivers/scsi/sata_qstor.c2
-rw-r--r--drivers/scsi/sata_sil.c2
-rw-r--r--drivers/scsi/sata_sis.c1
-rw-r--r--drivers/scsi/sata_svw.c3
-rw-r--r--drivers/scsi/sata_sx4.c2
-rw-r--r--drivers/scsi/sata_uli.c1
-rw-r--r--drivers/scsi/sata_via.c1
-rw-r--r--drivers/scsi/sata_vsc.c2
-rw-r--r--drivers/scsi/scsi_scan.c1
-rw-r--r--drivers/scsi/scsi_transport_spi.c188
26 files changed, 1073 insertions, 1436 deletions
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index da5bd33d982..fc5263c6b10 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -32,6 +32,7 @@
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
+#include <linux/dma-mapping.h>
#include "scsi.h"
#include <scsi/scsi_host.h>
#include <linux/libata.h>
@@ -289,6 +290,8 @@ static void ahci_host_stop(struct ata_host_set *host_set)
{
struct ahci_host_priv *hpriv = host_set->private_data;
kfree(hpriv);
+
+ ata_host_stop(host_set);
}
static int ahci_port_start(struct ata_port *ap)
diff --git a/drivers/scsi/aic7xxx/aic7770_osm.c b/drivers/scsi/aic7xxx/aic7770_osm.c
index c2b47f2bdff..682ca0b32b4 100644
--- a/drivers/scsi/aic7xxx/aic7770_osm.c
+++ b/drivers/scsi/aic7xxx/aic7770_osm.c
@@ -41,7 +41,6 @@
#include "aic7xxx_osm.h"
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
#include <linux/device.h>
#include <linux/eisa.h>
@@ -62,13 +61,6 @@ static struct eisa_driver aic7770_driver = {
};
typedef struct device *aic7770_dev_t;
-#else
-#define MINSLOT 1
-#define NUMSLOTS 16
-#define IDOFFSET 0x80
-
-typedef void *aic7770_dev_t;
-#endif
static int aic7770_linux_config(struct aic7770_identity *entry,
aic7770_dev_t dev, u_int eisaBase);
@@ -76,7 +68,6 @@ static int aic7770_linux_config(struct aic7770_identity *entry,
int
ahc_linux_eisa_init(void)
{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
struct eisa_device_id *eid;
struct aic7770_identity *id;
int i;
@@ -110,44 +101,6 @@ ahc_linux_eisa_init(void)
eid->sig[0] = 0;
return eisa_driver_register(&aic7770_driver);
-#else /* LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) */
- struct aic7770_identity *entry;
- u_int slot;
- u_int eisaBase;
- u_int i;
- int ret = -ENODEV;
-
- if (aic7xxx_probe_eisa_vl == 0)
- return ret;
-
- eisaBase = 0x1000 + AHC_EISA_SLOT_OFFSET;
- for (slot = 1; slot < NUMSLOTS; eisaBase+=0x1000, slot++) {
- uint32_t eisa_id;
- size_t id_size;
-
- if (request_region(eisaBase, AHC_EISA_IOSIZE, "aic7xxx") == 0)
- continue;
-
- eisa_id = 0;
- id_size = sizeof(eisa_id);
- for (i = 0; i < 4; i++) {
- /* VLcards require priming*/
- outb(0x80 + i, eisaBase + IDOFFSET);
- eisa_id |= inb(eisaBase + IDOFFSET + i)
- << ((id_size-i-1) * 8);
- }
- release_region(eisaBase, AHC_EISA_IOSIZE);
- if (eisa_id & 0x80000000)
- continue; /* no EISA card in slot */
-
- entry = aic7770_find_device(eisa_id);
- if (entry != NULL) {
- aic7770_linux_config(entry, NULL, eisaBase);
- ret = 0;
- }
- }
- return ret;
-#endif
}
void
@@ -187,11 +140,10 @@ aic7770_linux_config(struct aic7770_identity *entry, aic7770_dev_t dev,
ahc_free(ahc);
return (error);
}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
+
dev->driver_data = (void *)ahc;
if (aic7xxx_detect_complete)
error = ahc_linux_register_host(ahc, &aic7xxx_driver_template);
-#endif
return (error);
}
@@ -225,7 +177,6 @@ aic7770_map_int(struct ahc_softc *ahc, u_int irq)
return (-error);
}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
static int
aic7770_eisa_dev_probe(struct device *dev)
{
@@ -261,4 +212,3 @@ aic7770_eisa_dev_remove(struct device *dev)
return (0);
}
-#endif
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c
index 550c9921691..7c02b7dc709 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -2488,7 +2488,7 @@ ahd_linux_dv_thread(void *data)
sprintf(current->comm, "ahd_dv_%d", ahd->unit);
#else
daemonize("ahd_dv_%d", ahd->unit);
- current->flags |= PF_FREEZE;
+ current->flags |= PF_NOFREEZE;
#endif
unlock_kernel();
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index d978e4a3e97..c13e5632001 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -134,11 +134,6 @@ static struct scsi_transport_template *ahc_linux_transport_template = NULL;
#include "aiclib.c"
#include <linux/init.h> /* __setup */
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-#include "sd.h" /* For geometry detection */
-#endif
-
#include <linux/mm.h> /* For fetching system memory size */
#include <linux/blkdev.h> /* For block_size() */
#include <linux/delay.h> /* For ssleep/msleep */
@@ -148,11 +143,6 @@ static struct scsi_transport_template *ahc_linux_transport_template = NULL;
*/
spinlock_t ahc_list_spinlock;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-/* For dynamic sglist size calculation. */
-u_int ahc_linux_nseg;
-#endif
-
/*
* Set this to the delay in seconds after SCSI bus reset.
* Note, we honor this only for the initial bus reset.
@@ -436,15 +426,12 @@ static void ahc_linux_handle_scsi_status(struct ahc_softc *,
struct ahc_linux_device *,
struct scb *);
static void ahc_linux_queue_cmd_complete(struct ahc_softc *ahc,
- Scsi_Cmnd *cmd);
+ struct scsi_cmnd *cmd);
static void ahc_linux_sem_timeout(u_long arg);
static void ahc_linux_freeze_simq(struct ahc_softc *ahc);
static void ahc_linux_release_simq(u_long arg);
-static void ahc_linux_dev_timed_unfreeze(u_long arg);
-static int ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag);
+static int ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag);
static void ahc_linux_initialize_scsi_bus(struct ahc_softc *ahc);
-static void ahc_linux_size_nseg(void);
-static void ahc_linux_thread_run_complete_queue(struct ahc_softc *ahc);
static u_int ahc_linux_user_tagdepth(struct ahc_softc *ahc,
struct ahc_devinfo *devinfo);
static void ahc_linux_device_queue_depth(struct ahc_softc *ahc,
@@ -458,54 +445,27 @@ static struct ahc_linux_device* ahc_linux_alloc_device(struct ahc_softc*,
u_int);
static void ahc_linux_free_device(struct ahc_softc*,
struct ahc_linux_device*);
-static void ahc_linux_run_device_queue(struct ahc_softc*,
- struct ahc_linux_device*);
+static int ahc_linux_run_command(struct ahc_softc*,
+ struct ahc_linux_device *,
+ struct scsi_cmnd *);
static void ahc_linux_setup_tag_info_global(char *p);
static aic_option_callback_t ahc_linux_setup_tag_info;
static int aic7xxx_setup(char *s);
static int ahc_linux_next_unit(void);
-static void ahc_runq_tasklet(unsigned long data);
-static struct ahc_cmd *ahc_linux_run_complete_queue(struct ahc_softc *ahc);
/********************************* Inlines ************************************/
-static __inline void ahc_schedule_runq(struct ahc_softc *ahc);
static __inline struct ahc_linux_device*
ahc_linux_get_device(struct ahc_softc *ahc, u_int channel,
- u_int target, u_int lun, int alloc);
-static __inline void ahc_schedule_completeq(struct ahc_softc *ahc);
-static __inline void ahc_linux_check_device_queue(struct ahc_softc *ahc,
- struct ahc_linux_device *dev);
-static __inline struct ahc_linux_device *
- ahc_linux_next_device_to_run(struct ahc_softc *ahc);
-static __inline void ahc_linux_run_device_queues(struct ahc_softc *ahc);
+ u_int target, u_int lun);
static __inline void ahc_linux_unmap_scb(struct ahc_softc*, struct scb*);
static __inline int ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb,
struct ahc_dma_seg *sg,
dma_addr_t addr, bus_size_t len);
-static __inline void
-ahc_schedule_completeq(struct ahc_softc *ahc)
-{
- if ((ahc->platform_data->flags & AHC_RUN_CMPLT_Q_TIMER) == 0) {
- ahc->platform_data->flags |= AHC_RUN_CMPLT_Q_TIMER;
- ahc->platform_data->completeq_timer.expires = jiffies;
- add_timer(&ahc->platform_data->completeq_timer);
- }
-}
-
-/*
- * Must be called with our lock held.
- */
-static __inline void
-ahc_schedule_runq(struct ahc_softc *ahc)
-{
- tasklet_schedule(&ahc->platform_data->runq_tasklet);
-}
-
static __inline struct ahc_linux_device*
ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, u_int target,
- u_int lun, int alloc)
+ u_int lun)
{
struct ahc_linux_target *targ;
struct ahc_linux_device *dev;
@@ -515,102 +475,15 @@ ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, u_int target,
if (channel != 0)
target_offset += 8;
targ = ahc->platform_data->targets[target_offset];
- if (targ == NULL) {
- if (alloc != 0) {
- targ = ahc_linux_alloc_target(ahc, channel, target);
- if (targ == NULL)
- return (NULL);
- } else
- return (NULL);
- }
+ BUG_ON(targ == NULL);
dev = targ->devices[lun];
- if (dev == NULL && alloc != 0)
- dev = ahc_linux_alloc_device(ahc, targ, lun);
- return (dev);
-}
-
-#define AHC_LINUX_MAX_RETURNED_ERRORS 4
-static struct ahc_cmd *
-ahc_linux_run_complete_queue(struct ahc_softc *ahc)
-{
- struct ahc_cmd *acmd;
- u_long done_flags;
- int with_errors;
-
- with_errors = 0;
- ahc_done_lock(ahc, &done_flags);
- while ((acmd = TAILQ_FIRST(&ahc->platform_data->completeq)) != NULL) {
- Scsi_Cmnd *cmd;
-
- if (with_errors > AHC_LINUX_MAX_RETURNED_ERRORS) {
- /*
- * Linux uses stack recursion to requeue
- * commands that need to be retried. Avoid
- * blowing out the stack by "spoon feeding"
- * commands that completed with error back
- * the operating system in case they are going
- * to be retried. "ick"
- */
- ahc_schedule_completeq(ahc);
- break;
- }
- TAILQ_REMOVE(&ahc->platform_data->completeq,
- acmd, acmd_links.tqe);
- cmd = &acmd_scsi_cmd(acmd);
- cmd->host_scribble = NULL;
- if (ahc_cmd_get_transaction_status(cmd) != DID_OK
- || (cmd->result & 0xFF) != SCSI_STATUS_OK)
- with_errors++;
-
- cmd->scsi_done(cmd);
- }
- ahc_done_unlock(ahc, &done_flags);
- return (acmd);
-}
-
-static __inline void
-ahc_linux_check_device_queue(struct ahc_softc *ahc,
- struct ahc_linux_device *dev)
-{
- if ((dev->flags & AHC_DEV_FREEZE_TIL_EMPTY) != 0
- && dev->active == 0) {
- dev->flags &= ~AHC_DEV_FREEZE_TIL_EMPTY;
- dev->qfrozen--;
- }
-
- if (TAILQ_FIRST(&dev->busyq) == NULL
- || dev->openings == 0 || dev->qfrozen != 0)
- return;
-
- ahc_linux_run_device_queue(ahc, dev);
-}
-
-static __inline struct ahc_linux_device *
-ahc_linux_next_device_to_run(struct ahc_softc *ahc)
-{
-
- if ((ahc->flags & AHC_RESOURCE_SHORTAGE) != 0
- || (ahc->platform_data->qfrozen != 0))
- return (NULL);
- return (TAILQ_FIRST(&ahc->platform_data->device_runq));
-}
-
-static __inline void
-ahc_linux_run_device_queues(struct ahc_softc *ahc)
-{
- struct ahc_linux_device *dev;
-
- while ((dev = ahc_linux_next_device_to_run(ahc)) != NULL) {
- TAILQ_REMOVE(&ahc->platform_data->device_runq, dev, links);
- dev->flags &= ~AHC_DEV_ON_RUN_LIST;
- ahc_linux_check_device_queue(ahc, dev);
- }
+ return dev;
}
static __inline void
ahc_linux_unmap_scb(struct ahc_softc *ahc, struct scb *scb)
{
- Scsi_Cmnd *cmd;
+ struct scsi_cmnd *cmd;
cmd = scb->io_ctx;
ahc_sync_sglist(ahc, scb, BUS_DMASYNC_POSTWRITE);
@@ -650,109 +523,15 @@ ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb,
return (consumed);
}
-/************************ Host template entry points *************************/
-static int ahc_linux_detect(Scsi_Host_Template *);
-static int ahc_linux_queue(Scsi_Cmnd *, void (*)(Scsi_Cmnd *));
-static const char *ahc_linux_info(struct Scsi_Host *);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-static int ahc_linux_slave_alloc(Scsi_Device *);
-static int ahc_linux_slave_configure(Scsi_Device *);
-static void ahc_linux_slave_destroy(Scsi_Device *);
-#if defined(__i386__)
-static int ahc_linux_biosparam(struct scsi_device*,
- struct block_device*,
- sector_t, int[]);
-#endif
-#else
-static int ahc_linux_release(struct Scsi_Host *);
-static void ahc_linux_select_queue_depth(struct Scsi_Host *host,
- Scsi_Device *scsi_devs);
-#if defined(__i386__)
-static int ahc_linux_biosparam(Disk *, kdev_t, int[]);
-#endif
-#endif
-static int ahc_linux_bus_reset(Scsi_Cmnd *);
-static int ahc_linux_dev_reset(Scsi_Cmnd *);
-static int ahc_linux_abort(Scsi_Cmnd *);
-
-/*
- * Calculate a safe value for AHC_NSEG (as expressed through ahc_linux_nseg).
- *
- * In pre-2.5.X...
- * The midlayer allocates an S/G array dynamically when a command is issued
- * using SCSI malloc. This array, which is in an OS dependent format that
- * must later be copied to our private S/G list, is sized to house just the
- * number of segments needed for the current transfer. Since the code that
- * sizes the SCSI malloc pool does not take into consideration fragmentation
- * of the pool, executing transactions numbering just a fraction of our
- * concurrent transaction limit with list lengths aproaching AHC_NSEG will
- * quickly depleat the SCSI malloc pool of usable space. Unfortunately, the
- * mid-layer does not properly handle this scsi malloc failures for the S/G
- * array and the result can be a lockup of the I/O subsystem. We try to size
- * our S/G list so that it satisfies our drivers allocation requirements in
- * addition to avoiding fragmentation of the SCSI malloc pool.
- */
-static void
-ahc_linux_size_nseg(void)
-{
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- u_int cur_size;
- u_int best_size;
-
- /*
- * The SCSI allocator rounds to the nearest 512 bytes
- * an cannot allocate across a page boundary. Our algorithm
- * is to start at 1K of scsi malloc space per-command and
- * loop through all factors of the PAGE_SIZE and pick the best.
- */
- best_size = 0;
- for (cur_size = 1024; cur_size <= PAGE_SIZE; cur_size *= 2) {
- u_int nseg;
-
- nseg = cur_size / sizeof(struct scatterlist);
- if (nseg < AHC_LINUX_MIN_NSEG)
- continue;
-
- if (best_size == 0) {
- best_size = cur_size;
- ahc_linux_nseg = nseg;
- } else {
- u_int best_rem;
- u_int cur_rem;
-
- /*
- * Compare the traits of the current "best_size"
- * with the current size to determine if the
- * current size is a better size.
- */
- best_rem = best_size % sizeof(struct scatterlist);
- cur_rem = cur_size % sizeof(struct scatterlist);
- if (cur_rem < best_rem) {
- best_size = cur_size;
- ahc_linux_nseg = nseg;
- }
- }
- }
-#endif
-}
-
/*
* Try to detect an Adaptec 7XXX controller.
*/
static int
-ahc_linux_detect(Scsi_Host_Template *template)
+ahc_linux_detect(struct scsi_host_template *template)
{
struct ahc_softc *ahc;
int found = 0;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- /*
- * It is a bug that the upper layer takes
- * this lock just prior to calling us.
- */
- spin_unlock_irq(&io_request_lock);
-#endif
-
/*
* Sanity checking of Linux SCSI data structures so
* that some of our hacks^H^H^H^H^Hassumptions aren't
@@ -764,7 +543,6 @@ ahc_linux_detect(Scsi_Host_Template *template)
printf("ahc_linux_detect: Unable to attach\n");
return (0);
}
- ahc_linux_size_nseg();
/*
* If we've been passed any parameters, process them now.
*/
@@ -793,48 +571,11 @@ ahc_linux_detect(Scsi_Host_Template *template)
found++;
}
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- spin_lock_irq(&io_request_lock);
-#endif
aic7xxx_detect_complete++;
return (found);
}
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-/*
- * Free the passed in Scsi_Host memory structures prior to unloading the
- * module.
- */
-int
-ahc_linux_release(struct Scsi_Host * host)
-{
- struct ahc_softc *ahc;
- u_long l;
-
- ahc_list_lock(&l);
- if (host != NULL) {
-
- /*
- * We should be able to just perform
- * the free directly, but check our
- * list for extra sanity.
- */
- ahc = ahc_find_softc(*(struct ahc_softc **)host->hostdata);
- if (ahc != NULL) {
- u_long s;
-
- ahc_lock(ahc, &s);
- ahc_intr_enable(ahc, FALSE);
- ahc_unlock(ahc, &s);
- ahc_free(ahc);
- }
- }
- ahc_list_unlock(&l);
- return (0);
-}
-#endif
-
/*
* Return a string describing the driver.
*/
@@ -867,11 +608,10 @@ ahc_linux_info(struct Scsi_Host *host)
* Queue an SCB to the controller.
*/
static int
-ahc_linux_queue(Scsi_Cmnd * cmd, void (*scsi_done) (Scsi_Cmnd *))
+ahc_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *))
{
struct ahc_softc *ahc;
struct ahc_linux_device *dev;
- u_long flags;
ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
@@ -880,205 +620,152 @@ ahc_linux_queue(Scsi_Cmnd * cmd, void (*scsi_done) (Scsi_Cmnd *))
*/
cmd->scsi_done = scsi_done;
- ahc_midlayer_entrypoint_lock(ahc, &flags);
-
/*
* Close the race of a command that was in the process of
* being queued to us just as our simq was frozen. Let
* DV commands through so long as we are only frozen to
* perform DV.
*/
- if (ahc->platform_data->qfrozen != 0) {
+ if (ahc->platform_data->qfrozen != 0)
+ return SCSI_MLQUEUE_HOST_BUSY;
- ahc_cmd_set_transaction_status(cmd, CAM_REQUEUE_REQ);
- ahc_linux_queue_cmd_complete(ahc, cmd);
- ahc_schedule_completeq(ahc);
- ahc_midlayer_entrypoint_unlock(ahc, &flags);
- return (0);
- }
dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id,
- cmd->device->lun, /*alloc*/TRUE);
- if (dev == NULL) {
- ahc_cmd_set_transaction_status(cmd, CAM_RESRC_UNAVAIL);
- ahc_linux_queue_cmd_complete(ahc, cmd);
- ahc_schedule_completeq(ahc);
- ahc_midlayer_entrypoint_unlock(ahc, &flags);
- printf("%s: aic7xxx_linux_queue - Unable to allocate device!\n",
- ahc_name(ahc));
- return (0);
- }
+ cmd->device->lun);
+ BUG_ON(dev == NULL);
+
cmd->result = CAM_REQ_INPROG << 16;
- TAILQ_INSERT_TAIL(&dev->busyq, (struct ahc_cmd *)cmd, acmd_links.tqe);
- if ((dev->flags & AHC_DEV_ON_RUN_LIST) == 0) {
- TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, dev, links);
- dev->flags |= AHC_DEV_ON_RUN_LIST;
- ahc_linux_run_device_queues(ahc);
- }
- ahc_midlayer_entrypoint_unlock(ahc, &flags);
- return (0);
+
+ return ahc_linux_run_command(ahc, dev, cmd);
}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
static int
-ahc_linux_slave_alloc(Scsi_Device *device)
+ahc_linux_slave_alloc(struct scsi_device *device)
{
struct ahc_softc *ahc;
+ struct ahc_linux_target *targ;
+ struct scsi_target *starget = device->sdev_target;
+ struct ahc_linux_device *dev;
+ unsigned int target_offset;
+ unsigned long flags;
+ int retval = -ENOMEM;
+
+ target_offset = starget->id;
+ if (starget->channel != 0)
+ target_offset += 8;
ahc = *((struct ahc_softc **)device->host->hostdata);
if (bootverbose)
printf("%s: Slave Alloc %d\n", ahc_name(ahc), device->id);
- return (0);
+ ahc_lock(ahc, &flags);
+ targ = ahc->platform_data->targets[target_offset];
+ if (targ == NULL) {
+ struct seeprom_config *sc;
+
+ targ = ahc_linux_alloc_target(ahc, starget->channel,
+ starget->id);
+ sc = ahc->seep_config;
+ if (targ == NULL)
+ goto out;
+
+ if (sc) {
+ unsigned short scsirate;
+ struct ahc_devinfo devinfo;
+ struct ahc_initiator_tinfo *tinfo;
+ struct ahc_tmode_tstate *tstate;
+ char channel = starget->channel + 'A';
+ unsigned int our_id = ahc->our_id;
+
+ if (starget->channel)
+ our_id = ahc->our_id_b;
+
+ if ((ahc->features & AHC_ULTRA2) != 0) {
+ scsirate = sc->device_flags[target_offset] & CFXFER;
+ } else {
+ scsirate = (sc->device_flags[target_offset] & CFXFER) << 4;
+ if (sc->device_flags[target_offset] & CFSYNCH)
+ scsirate |= SOFS;
+ }
+ if (sc->device_flags[target_offset] & CFWIDEB) {
+ scsirate |= WIDEXFER;
+ spi_max_width(starget) = 1;
+ } else
+ spi_max_width(starget) = 0;
+ spi_min_period(starget) =
+ ahc_find_period(ahc, scsirate, AHC_SYNCRATE_DT);
+ tinfo = ahc_fetch_transinfo(ahc, channel, ahc->our_id,
+ targ->target, &tstate);
+ ahc_compile_devinfo(&devinfo, our_id, targ->target,
+ CAM_LUN_WILDCARD, channel,
+ ROLE_INITIATOR);
+ ahc_set_syncrate(ahc, &devinfo, NULL, 0, 0, 0,
+ AHC_TRANS_GOAL, /*paused*/FALSE);
+ ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
+ AHC_TRANS_GOAL, /*paused*/FALSE);
+ }
+
+ }
+ dev = targ->devices[device->lun];
+ if (dev == NULL) {
+ dev = ahc_linux_alloc_device(ahc, targ, device->lun);
+ if (dev == NULL)
+ goto out;
+ }
+ retval = 0;
+
+ out:
+ ahc_unlock(ahc, &flags);
+ return retval;
}
static int
-ahc_linux_slave_configure(Scsi_Device *device)
+ahc_linux_slave_configure(struct scsi_device *device)
{
struct ahc_softc *ahc;
struct ahc_linux_device *dev;
- u_long flags;
ahc = *((struct ahc_softc **)device->host->hostdata);
+
if (bootverbose)
printf("%s: Slave Configure %d\n", ahc_name(ahc), device->id);
- ahc_midlayer_entrypoint_lock(ahc, &flags);
- /*
- * Since Linux has attached to the device, configure
- * it so we don't free and allocate the device
- * structure on every command.
- */
- dev = ahc_linux_get_device(ahc, device->channel,
- device->id, device->lun,
- /*alloc*/TRUE);
- if (dev != NULL) {
- dev->flags &= ~AHC_DEV_UNCONFIGURED;
- dev->scsi_device = device;
- ahc_linux_device_queue_depth(ahc, dev);
- }
- ahc_midlayer_entrypoint_unlock(ahc, &flags);
+
+ dev = ahc_linux_get_device(ahc, device->channel, device->id,
+ device->lun);
+ dev->scsi_device = device;
+ ahc_linux_device_queue_depth(ahc, dev);
/* Initial Domain Validation */
if (!spi_initial_dv(device->sdev_target))
spi_dv_device(device);
- return (0);
+ return 0;
}
static void
-ahc_linux_slave_destroy(Scsi_Device *device)
+ahc_linux_slave_destroy(struct scsi_device *device)
{
struct ahc_softc *ahc;
struct ahc_linux_device *dev;
- u_long flags;
ahc = *((struct ahc_softc **)device->host->hostdata);
if (bootverbose)
printf("%s: Slave Destroy %d\n", ahc_name(ahc), device->id);
- ahc_midlayer_entrypoint_lock(ahc, &flags);
dev = ahc_linux_get_device(ahc, device->channel,
- device->id, device->lun,
- /*alloc*/FALSE);
- /*
- * Filter out "silly" deletions of real devices by only
- * deleting devices that have had slave_configure()
- * called on them. All other devices that have not
- * been configured will automatically be deleted by
- * the refcounting process.
- */
- if (dev != NULL
- && (dev->flags & AHC_DEV_SLAVE_CONFIGURED) != 0) {
- dev->flags |= AHC_DEV_UNCONFIGURED;
- if (TAILQ_EMPTY(&dev->busyq)
- && dev->active == 0
- && (dev->flags & AHC_DEV_TIMER_ACTIVE) == 0)
- ahc_linux_free_device(ahc, dev);
- }
- ahc_midlayer_entrypoint_unlock(ahc, &flags);
-}
-#else
-/*
- * Sets the queue depth for each SCSI device hanging
- * off the input host adapter.
- */
-static void
-ahc_linux_select_queue_depth(struct Scsi_Host *host, Scsi_Device *scsi_devs)
-{
- Scsi_Device *device;
- Scsi_Device *ldev;
- struct ahc_softc *ahc;
- u_long flags;
+ device->id, device->lun);
- ahc = *((struct ahc_softc **)host->hostdata);
- ahc_lock(ahc, &flags);
- for (device = scsi_devs; device != NULL; device = device->next) {
+ BUG_ON(dev->active);
- /*
- * Watch out for duplicate devices. This works around
- * some quirks in how the SCSI scanning code does its
- * device management.
- */
- for (ldev = scsi_devs; ldev != device; ldev = ldev->next) {
- if (ldev->host == device->host
- && ldev->channel == device->channel
- && ldev->id == device->id
- && ldev->lun == device->lun)
- break;
- }
- /* Skip duplicate. */
- if (ldev != device)
- continue;
-
- if (device->host == host) {
- struct ahc_linux_device *dev;
-
- /*
- * Since Linux has attached to the device, configure
- * it so we don't free and allocate the device
- * structure on every command.
- */
- dev = ahc_linux_get_device(ahc, device->channel,
- device->id, device->lun,
- /*alloc*/TRUE);
- if (dev != NULL) {
- dev->flags &= ~AHC_DEV_UNCONFIGURED;
- dev->scsi_device = device;
- ahc_linux_device_queue_depth(ahc, dev);
- device->queue_depth = dev->openings
- + dev->active;
- if ((dev->flags & (AHC_DEV_Q_BASIC
- | AHC_DEV_Q_TAGGED)) == 0) {
- /*
- * We allow the OS to queue 2 untagged
- * transactions to us at any time even
- * though we can only execute them
- * serially on the controller/device.
- * This should remove some latency.
- */
- device->queue_depth = 2;
- }
- }
- }
- }
- ahc_unlock(ahc, &flags);
+ ahc_linux_free_device(ahc, dev);
}
-#endif
#if defined(__i386__)
/*
* Return the disk geometry for the given SCSI device.
*/
static int
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
ahc_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
sector_t capacity, int geom[])
{
uint8_t *bh;
-#else
-ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
-{
- struct scsi_device *sdev = disk->device;
- u_long capacity = disk->capacity;
- struct buffer_head *bh;
-#endif
int heads;
int sectors;
int cylinders;
@@ -1090,22 +777,11 @@ ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
ahc = *((struct ahc_softc **)sdev->host->hostdata);
channel = sdev->channel;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
bh = scsi_bios_ptable(bdev);
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,17)
- bh = bread(MKDEV(MAJOR(dev), MINOR(dev) & ~0xf), 0, block_size(dev));
-#else
- bh = bread(MKDEV(MAJOR(dev), MINOR(dev) & ~0xf), 0, 1024);
-#endif
-
if (bh) {
ret = scsi_partsize(bh, capacity,
&geom[2], &geom[0], &geom[1]);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
kfree(bh);
-#else
- brelse(bh);
-#endif
if (ret != -1)
return (ret);
}
@@ -1135,7 +811,7 @@ ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
* Abort the current SCSI command(s).
*/
static int
-ahc_linux_abort(Scsi_Cmnd *cmd)
+ahc_linux_abort(struct scsi_cmnd *cmd)
{
int error;
@@ -1149,7 +825,7 @@ ahc_linux_abort(Scsi_Cmnd *cmd)
* Attempt to send a target reset message to the device that timed out.
*/
static int
-ahc_linux_dev_reset(Scsi_Cmnd *cmd)
+ahc_linux_dev_reset(struct scsi_cmnd *cmd)
{
int error;
@@ -1163,18 +839,14 @@ ahc_linux_dev_reset(Scsi_Cmnd *cmd)
* Reset the SCSI bus.
*/
static int
-ahc_linux_bus_reset(Scsi_Cmnd *cmd)
+ahc_linux_bus_reset(struct scsi_cmnd *cmd)
{
struct ahc_softc *ahc;
- u_long s;
int found;
ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
- ahc_midlayer_entrypoint_lock(ahc, &s);
found = ahc_reset_channel(ahc, cmd->device->channel + 'A',
/*initiate reset*/TRUE);
- ahc_linux_run_complete_queue(ahc);
- ahc_midlayer_entrypoint_unlock(ahc, &s);
if (bootverbose)
printf("%s: SCSI bus reset delivered. "
@@ -1183,7 +855,7 @@ ahc_linux_bus_reset(Scsi_Cmnd *cmd)
return SUCCESS;
}
-Scsi_Host_Template aic7xxx_driver_template = {
+struct scsi_host_template aic7xxx_driver_template = {
.module = THIS_MODULE,
.name = "aic7xxx",
.proc_info = ahc_linux_proc_info,
@@ -1206,33 +878,6 @@ Scsi_Host_Template aic7xxx_driver_template = {
/**************************** Tasklet Handler *********************************/
-/*
- * In 2.4.X and above, this routine is called from a tasklet,
- * so we must re-acquire our lock prior to executing this code.
- * In all prior kernels, ahc_schedule_runq() calls this routine
- * directly and ahc_schedule_runq() is called with our lock held.
- */
-static void
-ahc_runq_tasklet(unsigned long data)
-{
- struct ahc_softc* ahc;
- struct ahc_linux_device *dev;
- u_long flags;
-
- ahc = (struct ahc_softc *)data;
- ahc_lock(ahc, &flags);
- while ((dev = ahc_linux_next_device_to_run(ahc)) != NULL) {
-
- TAILQ_REMOVE(&ahc->platform_data->device_runq, dev, links);
- dev->flags &= ~AHC_DEV_ON_RUN_LIST;
- ahc_linux_check_device_queue(ahc, dev);
- /* Yeild to our interrupt handler */
- ahc_unlock(ahc, &flags);
- ahc_lock(ahc, &flags);
- }
- ahc_unlock(ahc, &flags);
-}
-
/******************************** Macros **************************************/
#define BUILD_SCSIID(ahc, cmd) \
((((cmd)->device->id << TID_SHIFT) & TID) \
@@ -1278,37 +923,11 @@ int
ahc_dmamem_alloc(struct ahc_softc *ahc, bus_dma_tag_t dmat, void** vaddr,
int flags, bus_dmamap_t *mapp)
{
- bus_dmamap_t map;
-
- map = malloc(sizeof(*map), M_DEVBUF, M_NOWAIT);
- if (map == NULL)
- return (ENOMEM);
- /*
- * Although we can dma data above 4GB, our
- * "consistent" memory is below 4GB for
- * space efficiency reasons (only need a 4byte
- * address). For this reason, we have to reset
- * our dma mask when doing allocations.
- */
- if (ahc->dev_softc != NULL)
- if (pci_set_dma_mask(ahc->dev_softc, 0xFFFFFFFF)) {
- printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
- kfree(map);
- return (ENODEV);
- }
*vaddr = pci_alloc_consistent(ahc->dev_softc,
- dmat->maxsize, &map->bus_addr);
- if (ahc->dev_softc != NULL)
- if (pci_set_dma_mask(ahc->dev_softc,
- ahc->platform_data->hw_dma_mask)) {
- printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
- kfree(map);
- return (ENODEV);
- }
+ dmat->maxsize, mapp);
if (*vaddr == NULL)
- return (ENOMEM);
- *mapp = map;
- return(0);
+ return ENOMEM;
+ return 0;
}
void
@@ -1316,7 +935,7 @@ ahc_dmamem_free(struct ahc_softc *ahc, bus_dma_tag_t dmat,
void* vaddr, bus_dmamap_t map)
{
pci_free_consistent(ahc->dev_softc, dmat->maxsize,
- vaddr, map->bus_addr);
+ vaddr, map);
}
int
@@ -1330,7 +949,7 @@ ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map,
*/
bus_dma_segment_t stack_sg;
- stack_sg.ds_addr = map->bus_addr;
+ stack_sg.ds_addr = map;
stack_sg.ds_len = dmat->maxsize;
cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
return (0);
@@ -1339,12 +958,6 @@ ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map,
void
ahc_dmamap_destroy(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map)
{
- /*
- * The map may is NULL in our < 2.3.X implementation.
- * Now it's 2.6.5, but just in case...
- */
- BUG_ON(map == NULL);
- free(map, M_DEVBUF);
}
int
@@ -1550,7 +1163,7 @@ __setup("aic7xxx=", aic7xxx_setup);
uint32_t aic7xxx_verbose;
int
-ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template)
+ahc_linux_register_host(struct ahc_softc *ahc, struct scsi_host_template *template)
{
char buf[80];
struct Scsi_Host *host;
@@ -1564,11 +1177,7 @@ ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template)
*((struct ahc_softc **)host->hostdata) = ahc;
ahc_lock(ahc, &s);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
scsi_assign_lock(host, &ahc->platform_data->spin_lock);
-#elif AHC_SCSI_HAS_HOST_LOCK != 0
- host->lock = &ahc->platform_data->spin_lock;
-#endif
ahc->platform_data->host = host;
host->can_queue = AHC_MAX_QUEUE;
host->cmd_per_lun = 2;
@@ -1587,19 +1196,14 @@ ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template)
ahc_set_name(ahc, new_name);
}
host->unique_id = ahc->unit;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- scsi_set_pci_device(host, ahc->dev_softc);
-#endif
ahc_linux_initialize_scsi_bus(ahc);
ahc_intr_enable(ahc, TRUE);
ahc_unlock(ahc, &s);
host->transportt = ahc_linux_transport_template;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
scsi_add_host(host, (ahc->dev_softc ? &ahc->dev_softc->dev : NULL)); /* XXX handle failure */
scsi_scan_host(host);
-#endif
return (0);
}
@@ -1717,19 +1321,9 @@ ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg)
if (ahc->platform_data == NULL)
return (ENOMEM);
memset(ahc->platform_data, 0, sizeof(struct ahc_platform_data));
- TAILQ_INIT(&ahc->platform_data->completeq);
- TAILQ_INIT(&ahc->platform_data->device_runq);
ahc->platform_data->irq = AHC_LINUX_NOIRQ;
- ahc->platform_data->hw_dma_mask = 0xFFFFFFFF;
ahc_lockinit(ahc);
- ahc_done_lockinit(ahc);
- init_timer(&ahc->platform_data->completeq_timer);
- ahc->platform_data->completeq_timer.data = (u_long)ahc;
- ahc->platform_data->completeq_timer.function =
- (ahc_linux_callback_t *)ahc_linux_thread_run_complete_queue;
init_MUTEX_LOCKED(&ahc->platform_data->eh_sem);
- tasklet_init(&ahc->platform_data->runq_tasklet, ahc_runq_tasklet,
- (unsigned long)ahc);
ahc->seltime = (aic7xxx_seltime & 0x3) << 4;
ahc->seltime_b = (aic7xxx_seltime & 0x3) << 4;
if (aic7xxx_pci_parity == 0)
@@ -1746,12 +1340,8 @@ ahc_platform_free(struct ahc_softc *ahc)
int i, j;
if (ahc->platform_data != NULL) {
- del_timer_sync(&ahc->platform_data->completeq_timer);
- tasklet_kill(&ahc->platform_data->runq_tasklet);
if (ahc->platform_data->host != NULL) {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
scsi_remove_host(ahc->platform_data->host);
-#endif
scsi_host_put(ahc->platform_data->host);
}
@@ -1787,16 +1377,7 @@ ahc_platform_free(struct ahc_softc *ahc)
release_mem_region(ahc->platform_data->mem_busaddr,
0x1000);
}
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- /*
- * In 2.4 we detach from the scsi midlayer before the PCI
- * layer invokes our remove callback. No per-instance
- * detach is provided, so we must reach inside the PCI
- * subsystem's internals and detach our driver manually.
- */
- if (ahc->dev_softc != NULL)
- ahc->dev_softc->driver = NULL;
-#endif
+
free(ahc->platform_data, M_DEVBUF);
}
}
@@ -1820,7 +1401,7 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
dev = ahc_linux_get_device(ahc, devinfo->channel - 'A',
devinfo->target,
- devinfo->lun, /*alloc*/FALSE);
+ devinfo->lun);
if (dev == NULL)
return;
was_queuing = dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED);
@@ -1873,7 +1454,6 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
dev->maxtags = 0;
dev->openings = 1 - dev->active;
}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
if (dev->scsi_device != NULL) {
switch ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED))) {
case AHC_DEV_Q_BASIC:
@@ -1899,90 +1479,13 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
break;
}
}
-#endif
}
int
ahc_platform_abort_scbs(struct ahc_softc *ahc, int target, char channel,
int lun, u_int tag, role_t role, uint32_t status)
{
- int chan;
- int maxchan;
- int targ;
- int maxtarg;
- int clun;
- int maxlun;
- int count;
-
- if (tag != SCB_LIST_NULL)
- return (0);
-
- chan = 0;
- if (channel != ALL_CHANNELS) {
- chan = channel - 'A';
- maxchan = chan + 1;
- } else {
- maxchan = (ahc->features & AHC_TWIN) ? 2 : 1;
- }
- targ = 0;
- if (target != CAM_TARGET_WILDCARD) {
- targ = target;
- maxtarg = targ + 1;
- } else {
- maxtarg = (ahc->features & AHC_WIDE) ? 16 : 8;
- }
- clun = 0;
- if (lun != CAM_LUN_WILDCARD) {
- clun = lun;
- maxlun = clun + 1;
- } else {
- maxlun = AHC_NUM_LUNS;
- }
-
- count = 0;
- for (; chan < maxchan; chan++) {
-
- for (; targ < maxtarg; targ++) {
-
- for (; clun < maxlun; clun++) {
- struct ahc_linux_device *dev;
- struct ahc_busyq *busyq;
- struct ahc_cmd *acmd;
-
- dev = ahc_linux_get_device(ahc, chan,
- targ, clun,
- /*alloc*/FALSE);
- if (dev == NULL)
- continue;
-
- busyq = &dev->busyq;
- while ((acmd = TAILQ_FIRST(busyq)) != NULL) {
- Scsi_Cmnd *cmd;
-
- cmd = &acmd_scsi_cmd(acmd);
- TAILQ_REMOVE(busyq, acmd,
- acmd_links.tqe);
- count++;
- cmd->result = status << 16;
- ahc_linux_queue_cmd_complete(ahc, cmd);
- }
- }
- }
- }
-
- return (count);
-}
-
-static void
-ahc_linux_thread_run_complete_queue(struct ahc_softc *ahc)
-{
- u_long flags;
-
- ahc_lock(ahc, &flags);
- del_timer(&ahc->platform_data->completeq_timer);
- ahc->platform_data->flags &= ~AHC_RUN_CMPLT_Q_TIMER;
- ahc_linux_run_complete_queue(ahc);
- ahc_unlock(ahc, &flags);
+ return 0;
}
static u_int
@@ -2045,213 +1548,200 @@ ahc_linux_device_queue_depth(struct ahc_softc *ahc,
}
}
-static void
-ahc_linux_run_device_queue(struct ahc_softc *ahc, struct ahc_linux_device *dev)
+static int
+ahc_linux_run_command(struct ahc_softc *ahc, struct ahc_linux_device *dev,
+ struct scsi_cmnd *cmd)
{
- struct ahc_cmd *acmd;
- struct scsi_cmnd *cmd;
struct scb *scb;
struct hardware_scb *hscb;
struct ahc_initiator_tinfo *tinfo;
struct ahc_tmode_tstate *tstate;
uint16_t mask;
+ struct scb_tailq *untagged_q = NULL;
- if ((dev->flags & AHC_DEV_ON_RUN_LIST) != 0)
- panic("running device on run list");
+ /*
+ * Schedule us to run later. The only reason we are not
+ * running is because the whole controller Q is frozen.
+ */
+ if (ahc->platform_data->qfrozen != 0)
+ return SCSI_MLQUEUE_HOST_BUSY;
- while ((acmd = TAILQ_FIRST(&dev->busyq)) != NULL
- && dev->openings > 0 && dev->qfrozen == 0) {
+ /*
+ * We only allow one untagged transaction
+ * per target in the initiator role unless
+ * we are storing a full busy target *lun*
+ * table in SCB space.
+ */
+ if (!blk_rq_tagged(cmd->request)
+ && (ahc->features & AHC_SCB_BTT) == 0) {
+ int target_offset;
- /*
- * Schedule us to run later. The only reason we are not
- * running is because the whole controller Q is frozen.
- */
- if (ahc->platform_data->qfrozen != 0) {
- TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq,
- dev, links);
- dev->flags |= AHC_DEV_ON_RUN_LIST;
- return;
- }
- /*
- * Get an scb to use.
- */
- if ((scb = ahc_get_scb(ahc)) == NULL) {
- TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq,
- dev, links);
- dev->flags |= AHC_DEV_ON_RUN_LIST;
- ahc->flags |= AHC_RESOURCE_SHORTAGE;
- return;
- }
- TAILQ_REMOVE(&dev->busyq, acmd, acmd_links.tqe);
- cmd = &acmd_scsi_cmd(acmd);
- scb->io_ctx = cmd;
- scb->platform_data->dev = dev;
- hscb = scb->hscb;
- cmd->host_scribble = (char *)scb;
+ target_offset = cmd->device->id + cmd->device->channel * 8;
+ untagged_q = &(ahc->untagged_queues[target_offset]);
+ if (!TAILQ_EMPTY(untagged_q))
+ /* if we're already executing an untagged command
+ * we're busy to another */
+ return SCSI_MLQUEUE_DEVICE_BUSY;
+ }
- /*
- * Fill out basics of the HSCB.
- */
- hscb->control = 0;
- hscb->scsiid = BUILD_SCSIID(ahc, cmd);
- hscb->lun = cmd->device->lun;
- mask = SCB_GET_TARGET_MASK(ahc, scb);
- tinfo = ahc_fetch_transinfo(ahc, SCB_GET_CHANNEL(ahc, scb),
- SCB_GET_OUR_ID(scb),
- SCB_GET_TARGET(ahc, scb), &tstate);
- hscb->scsirate = tinfo->scsirate;
- hscb->scsioffset = tinfo->curr.offset;
- if ((tstate->ultraenb & mask) != 0)
- hscb->control |= ULTRAENB;
-
- if ((ahc->user_discenable & mask) != 0)
- hscb->control |= DISCENB;
-
- if ((tstate->auto_negotiate & mask) != 0) {
- scb->flags |= SCB_AUTO_NEGOTIATE;
- scb->hscb->control |= MK_MESSAGE;
- }
+ /*
+ * Get an scb to use.
+ */
+ if ((scb = ahc_get_scb(ahc)) == NULL) {
+ ahc->flags |= AHC_RESOURCE_SHORTAGE;
+ return SCSI_MLQUEUE_HOST_BUSY;
+ }
- if ((dev->flags & (AHC_DEV_Q_TAGGED|AHC_DEV_Q_BASIC)) != 0) {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- int msg_bytes;
- uint8_t tag_msgs[2];
+ scb->io_ctx = cmd;
+ scb->platform_data->dev = dev;
+ hscb = scb->hscb;
+ cmd->host_scribble = (char *)scb;
- msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
- if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
- hscb->control |= tag_msgs[0];
- if (tag_msgs[0] == MSG_ORDERED_TASK)
- dev->commands_since_idle_or_otag = 0;
- } else
-#endif
- if (dev->commands_since_idle_or_otag == AHC_OTAG_THRESH
- && (dev->flags & AHC_DEV_Q_TAGGED) != 0) {
- hscb->control |= MSG_ORDERED_TASK;
+ /*
+ * Fill out basics of the HSCB.
+ */
+ hscb->control = 0;
+ hscb->scsiid = BUILD_SCSIID(ahc, cmd);
+ hscb->lun = cmd->device->lun;
+ mask = SCB_GET_TARGET_MASK(ahc, scb);
+ tinfo = ahc_fetch_transinfo(ahc, SCB_GET_CHANNEL(ahc, scb),
+ SCB_GET_OUR_ID(scb),
+ SCB_GET_TARGET(ahc, scb), &tstate);
+ hscb->scsirate = tinfo->scsirate;
+ hscb->scsioffset = tinfo->curr.offset;
+ if ((tstate->ultraenb & mask) != 0)
+ hscb->control |= ULTRAENB;
+
+ if ((ahc->user_discenable & mask) != 0)
+ hscb->control |= DISCENB;
+
+ if ((tstate->auto_negotiate & mask) != 0) {
+ scb->flags |= SCB_AUTO_NEGOTIATE;
+ scb->hscb->control |= MK_MESSAGE;
+ }
+
+ if ((dev->flags & (AHC_DEV_Q_TAGGED|AHC_DEV_Q_BASIC)) != 0) {
+ int msg_bytes;
+ uint8_t tag_msgs[2];
+
+ msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
+ if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
+ hscb->control |= tag_msgs[0];
+ if (tag_msgs[0] == MSG_ORDERED_TASK)
dev->commands_since_idle_or_otag = 0;
- } else {
- hscb->control |= MSG_SIMPLE_TASK;
- }
- }
-
- hscb->cdb_len = cmd->cmd_len;
- if (hscb->cdb_len <= 12) {
- memcpy(hscb->shared_data.cdb, cmd->cmnd, hscb->cdb_len);
+ } else if (dev->commands_since_idle_or_otag == AHC_OTAG_THRESH
+ && (dev->flags & AHC_DEV_Q_TAGGED) != 0) {
+ hscb->control |= MSG_ORDERED_TASK;
+ dev->commands_since_idle_or_otag = 0;
} else {
- memcpy(hscb->cdb32, cmd->cmnd, hscb->cdb_len);
- scb->flags |= SCB_CDB32_PTR;
+ hscb->control |= MSG_SIMPLE_TASK;
}
+ }
- scb->platform_data->xfer_len = 0;
- ahc_set_residual(scb, 0);
- ahc_set_sense_residual(scb, 0);
- scb->sg_count = 0;
- if (cmd->use_sg != 0) {
- struct ahc_dma_seg *sg;
- struct scatterlist *cur_seg;
- struct scatterlist *end_seg;
- int nseg;
-
- cur_seg = (struct scatterlist *)cmd->request_buffer;
- nseg = pci_map_sg(ahc->dev_softc, cur_seg, cmd->use_sg,
- cmd->sc_data_direction);
- end_seg = cur_seg + nseg;
- /* Copy the segments into the SG list. */
- sg = scb->sg_list;
- /*
- * The sg_count may be larger than nseg if
- * a transfer crosses a 32bit page.
- */
- while (cur_seg < end_seg) {
- dma_addr_t addr;
- bus_size_t len;
- int consumed;
-
- addr = sg_dma_address(cur_seg);
- len = sg_dma_len(cur_seg);
- consumed = ahc_linux_map_seg(ahc, scb,
- sg, addr, len);
- sg += consumed;
- scb->sg_count += consumed;
- cur_seg++;
- }
- sg--;
- sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
-
- /*
- * Reset the sg list pointer.
- */
- scb->hscb->sgptr =
- ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
+ hscb->cdb_len = cmd->cmd_len;
+ if (hscb->cdb_len <= 12) {
+ memcpy(hscb->shared_data.cdb, cmd->cmnd, hscb->cdb_len);
+ } else {
+ memcpy(hscb->cdb32, cmd->cmnd, hscb->cdb_len);
+ scb->flags |= SCB_CDB32_PTR;
+ }
- /*
- * Copy the first SG into the "current"
- * data pointer area.
- */
- scb->hscb->dataptr = scb->sg_list->addr;
- scb->hscb->datacnt = scb->sg_list->len;
- } else if (cmd->request_bufflen != 0) {
- struct ahc_dma_seg *sg;
+ scb->platform_data->xfer_len = 0;
+ ahc_set_residual(scb, 0);
+ ahc_set_sense_residual(scb, 0);
+ scb->sg_count = 0;
+ if (cmd->use_sg != 0) {
+ struct ahc_dma_seg *sg;
+ struct scatterlist *cur_seg;
+ struct scatterlist *end_seg;
+ int nseg;
+
+ cur_seg = (struct scatterlist *)cmd->request_buffer;
+ nseg = pci_map_sg(ahc->dev_softc, cur_seg, cmd->use_sg,
+ cmd->sc_data_direction);
+ end_seg = cur_seg + nseg;
+ /* Copy the segments into the SG list. */
+ sg = scb->sg_list;
+ /*
+ * The sg_count may be larger than nseg if
+ * a transfer crosses a 32bit page.
+ */
+ while (cur_seg < end_seg) {
dma_addr_t addr;
-
- sg = scb->sg_list;
- addr = pci_map_single(ahc->dev_softc,
- cmd->request_buffer,
- cmd->request_bufflen,
- cmd->sc_data_direction);
- scb->platform_data->buf_busaddr = addr;
- scb->sg_count = ahc_linux_map_seg(ahc, scb,
- sg, addr,
- cmd->request_bufflen);
- sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
-
- /*
- * Reset the sg list pointer.
- */
- scb->hscb->sgptr =
- ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
-
- /*
- * Copy the first SG into the "current"
- * data pointer area.
- */
- scb->hscb->dataptr = sg->addr;
- scb->hscb->datacnt = sg->len;
- } else {
- scb->hscb->sgptr = ahc_htole32(SG_LIST_NULL);
- scb->hscb->dataptr = 0;
- scb->hscb->datacnt = 0;
- scb->sg_count = 0;
+ bus_size_t len;
+ int consumed;
+
+ addr = sg_dma_address(cur_seg);
+ len = sg_dma_len(cur_seg);
+ consumed = ahc_linux_map_seg(ahc, scb,
+ sg, addr, len);
+ sg += consumed;
+ scb->sg_count += consumed;
+ cur_seg++;
}
+ sg--;
+ sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
- ahc_sync_sglist(ahc, scb, BUS_DMASYNC_PREWRITE);
- LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
- dev->openings--;
- dev->active++;
- dev->commands_issued++;
- if ((dev->flags & AHC_DEV_PERIODIC_OTAG) != 0)
- dev->commands_since_idle_or_otag++;
+ /*
+ * Reset the sg list pointer.
+ */
+ scb->hscb->sgptr =
+ ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
+
+ /*
+ * Copy the first SG into the "current"
+ * data pointer area.
+ */
+ scb->hscb->dataptr = scb->sg_list->addr;
+ scb->hscb->datacnt = scb->sg_list->len;
+ } else if (cmd->request_bufflen != 0) {
+ struct ahc_dma_seg *sg;
+ dma_addr_t addr;
+
+ sg = scb->sg_list;
+ addr = pci_map_single(ahc->dev_softc,
+ cmd->request_buffer,
+ cmd->request_bufflen,
+ cmd->sc_data_direction);
+ scb->platform_data->buf_busaddr = addr;
+ scb->sg_count = ahc_linux_map_seg(ahc, scb,
+ sg, addr,
+ cmd->request_bufflen);
+ sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
/*
- * We only allow one untagged transaction
- * per target in the initiator role unless
- * we are storing a full busy target *lun*
- * table in SCB space.
+ * Reset the sg list pointer.
*/
- if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0
- && (ahc->features & AHC_SCB_BTT) == 0) {
- struct scb_tailq *untagged_q;
- int target_offset;
-
- target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
- untagged_q = &(ahc->untagged_queues[target_offset]);
- TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
- scb->flags |= SCB_UNTAGGEDQ;
- if (TAILQ_FIRST(untagged_q) != scb)
- continue;
- }
- scb->flags |= SCB_ACTIVE;
- ahc_queue_scb(ahc, scb);
+ scb->hscb->sgptr =
+ ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
+
+ /*
+ * Copy the first SG into the "current"
+ * data pointer area.
+ */
+ scb->hscb->dataptr = sg->addr;
+ scb->hscb->datacnt = sg->len;
+ } else {
+ scb->hscb->sgptr = ahc_htole32(SG_LIST_NULL);
+ scb->hscb->dataptr = 0;
+ scb->hscb->datacnt = 0;
+ scb->sg_count = 0;
}
+
+ LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
+ dev->openings--;
+ dev->active++;
+ dev->commands_issued++;
+ if ((dev->flags & AHC_DEV_PERIODIC_OTAG) != 0)
+ dev->commands_since_idle_or_otag++;
+
+ scb->flags |= SCB_ACTIVE;
+ if (untagged_q) {
+ TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
+ scb->flags |= SCB_UNTAGGEDQ;
+ }
+ ahc_queue_scb(ahc, scb);
+ return 0;
}
/*
@@ -2267,9 +1757,6 @@ ahc_linux_isr(int irq, void *dev_id, struct pt_regs * regs)
ahc = (struct ahc_softc *) dev_id;
ahc_lock(ahc, &flags);
ours = ahc_intr(ahc);
- if (ahc_linux_next_device_to_run(ahc) != NULL)
- ahc_schedule_runq(ahc);
- ahc_linux_run_complete_queue(ahc);
ahc_unlock(ahc, &flags);
return IRQ_RETVAL(ours);
}
@@ -2278,8 +1765,6 @@ void
ahc_platform_flushwork(struct ahc_softc *ahc)
{
- while (ahc_linux_run_complete_queue(ahc) != NULL)
- ;
}
static struct ahc_linux_target*
@@ -2348,9 +1833,6 @@ ahc_linux_alloc_device(struct ahc_softc *ahc,
if (dev == NULL)
return (NULL);
memset(dev, 0, sizeof(*dev));
- init_timer(&dev->timer);
- TAILQ_INIT(&dev->busyq);
- dev->flags = AHC_DEV_UNCONFIGURED;
dev->lun = lun;
dev->target = targ;
@@ -2373,7 +1855,7 @@ ahc_linux_alloc_device(struct ahc_softc *ahc,
}
static void
-__ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
+ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
{
struct ahc_linux_target *targ;
@@ -2385,13 +1867,6 @@ __ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
ahc_linux_free_target(ahc, targ);
}
-static void
-ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
-{
- del_timer_sync(&dev->timer);
- __ahc_linux_free_device(ahc, dev);
-}
-
void
ahc_send_async(struct ahc_softc *ahc, char channel,
u_int target, u_int lun, ac_code code, void *arg)
@@ -2463,28 +1938,9 @@ ahc_send_async(struct ahc_softc *ahc, char channel,
}
case AC_SENT_BDR:
{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
WARN_ON(lun != CAM_LUN_WILDCARD);
scsi_report_device_reset(ahc->platform_data->host,
channel - 'A', target);
-#else
- Scsi_Device *scsi_dev;
-
- /*
- * Find the SCSI device associated with this
- * request and indicate that a UA is expected.
- */
- for (scsi_dev = ahc->platform_data->host->host_queue;
- scsi_dev != NULL; scsi_dev = scsi_dev->next) {
- if (channel - 'A' == scsi_dev->channel
- && target == scsi_dev->id
- && (lun == CAM_LUN_WILDCARD
- || lun == scsi_dev->lun)) {
- scsi_dev->was_reset = 1;
- scsi_dev->expecting_cc_ua = 1;
- }
- }
-#endif
break;
}
case AC_BUS_RESET:
@@ -2504,7 +1960,7 @@ ahc_send_async(struct ahc_softc *ahc, char channel,
void
ahc_done(struct ahc_softc *ahc, struct scb *scb)
{
- Scsi_Cmnd *cmd;
+ struct scsi_cmnd *cmd;
struct ahc_linux_device *dev;
LIST_REMOVE(scb, pending_links);
@@ -2515,7 +1971,7 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
untagged_q = &(ahc->untagged_queues[target_offset]);
TAILQ_REMOVE(untagged_q, scb, links.tqe);
- ahc_run_untagged_queue(ahc, untagged_q);
+ BUG_ON(!TAILQ_EMPTY(untagged_q));
}
if ((scb->flags & SCB_ACTIVE) == 0) {
@@ -2583,8 +2039,6 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
}
} else if (ahc_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) {
ahc_linux_handle_scsi_status(ahc, dev, scb);
- } else if (ahc_get_transaction_status(scb) == CAM_SEL_TIMEOUT) {
- dev->flags |= AHC_DEV_UNCONFIGURED;
}
if (dev->openings == 1
@@ -2606,16 +2060,6 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
if (dev->active == 0)
dev->commands_since_idle_or_otag = 0;
- if (TAILQ_EMPTY(&dev->busyq)) {
- if ((dev->flags & AHC_DEV_UNCONFIGURED) != 0
- && dev->active == 0
- && (dev->flags & AHC_DEV_TIMER_ACTIVE) == 0)
- ahc_linux_free_device(ahc, dev);
- } else if ((dev->flags & AHC_DEV_ON_RUN_LIST) == 0) {
- TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, dev, links);
- dev->flags |= AHC_DEV_ON_RUN_LIST;
- }
-
if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
printf("Recovery SCB completes\n");
if (ahc_get_transaction_status(scb) == CAM_BDR_SENT
@@ -2659,7 +2103,7 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc,
case SCSI_STATUS_CHECK_COND:
case SCSI_STATUS_CMD_TERMINATED:
{
- Scsi_Cmnd *cmd;
+ struct scsi_cmnd *cmd;
/*
* Copy sense information to the OS's cmd
@@ -2754,52 +2198,15 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc,
ahc_platform_set_tags(ahc, &devinfo,
(dev->flags & AHC_DEV_Q_BASIC)
? AHC_QUEUE_BASIC : AHC_QUEUE_TAGGED);
- /* FALLTHROUGH */
- }
- case SCSI_STATUS_BUSY:
- {
- /*
- * Set a short timer to defer sending commands for
- * a bit since Linux will not delay in this case.
- */
- if ((dev->flags & AHC_DEV_TIMER_ACTIVE) != 0) {
- printf("%s:%c:%d: Device Timer still active during "
- "busy processing\n", ahc_name(ahc),
- dev->target->channel, dev->target->target);
- break;
- }
- dev->flags |= AHC_DEV_TIMER_ACTIVE;
- dev->qfrozen++;
- init_timer(&dev->timer);
- dev->timer.data = (u_long)dev;
- dev->timer.expires = jiffies + (HZ/2);
- dev->timer.function = ahc_linux_dev_timed_unfreeze;
- add_timer(&dev->timer);
break;
}
}
}
static void
-ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd)
+ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, struct scsi_cmnd *cmd)
{
/*
- * Typically, the complete queue has very few entries
- * queued to it before the queue is emptied by
- * ahc_linux_run_complete_queue, so sorting the entries
- * by generation number should be inexpensive.
- * We perform the sort so that commands that complete
- * with an error are retuned in the order origionally
- * queued to the controller so that any subsequent retries
- * are performed in order. The underlying ahc routines do
- * not guarantee the order that aborted commands will be
- * returned to us.
- */
- struct ahc_completeq *completeq;
- struct ahc_cmd *list_cmd;
- struct ahc_cmd *acmd;
-
- /*
* Map CAM error codes into Linux Error codes. We
* avoid the conversion so that the DV code has the
* full error information available when making
@@ -2852,26 +2259,7 @@ ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd)
new_status = DID_ERROR;
break;
case CAM_REQUEUE_REQ:
- /*
- * If we want the request requeued, make sure there
- * are sufficent retries. In the old scsi error code,
- * we used to be able to specify a result code that
- * bypassed the retry count. Now we must use this
- * hack. We also "fake" a check condition with
- * a sense code of ABORTED COMMAND. This seems to
- * evoke a retry even if this command is being sent
- * via the eh thread. Ick! Ick! Ick!
- */
- if (cmd->retries > 0)
- cmd->retries--;
- new_status = DID_OK;
- ahc_cmd_set_scsi_status(cmd, SCSI_STATUS_CHECK_COND);
- cmd->result |= (DRIVER_SENSE << 24);
- memset(cmd->sense_buffer, 0,
- sizeof(cmd->sense_buffer));
- cmd->sense_buffer[0] = SSD_ERRCODE_VALID
- | SSD_CURRENT_ERROR;
- cmd->sense_buffer[2] = SSD_KEY_ABORTED_COMMAND;
+ new_status = DID_REQUEUE;
break;
default:
/* We should never get here */
@@ -2882,17 +2270,7 @@ ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd)
ahc_cmd_set_transaction_status(cmd, new_status);
}
- completeq = &ahc->platform_data->completeq;
- list_cmd = TAILQ_FIRST(completeq);
- acmd = (struct ahc_cmd *)cmd;
- while (list_cmd != NULL
- && acmd_scsi_cmd(list_cmd).serial_number
- < acmd_scsi_cmd(acmd).serial_number)
- list_cmd = TAILQ_NEXT(list_cmd, acmd_links.tqe);
- if (list_cmd != NULL)
- TAILQ_INSERT_BEFORE(list_cmd, acmd, acmd_links.tqe);
- else
- TAILQ_INSERT_TAIL(completeq, acmd, acmd_links.tqe);
+ cmd->scsi_done(cmd);
}
static void
@@ -2940,7 +2318,6 @@ ahc_linux_release_simq(u_long arg)
ahc->platform_data->qfrozen--;
if (ahc->platform_data->qfrozen == 0)
unblock_reqs = 1;
- ahc_schedule_runq(ahc);
ahc_unlock(ahc, &s);
/*
* There is still a race here. The mid-layer
@@ -2952,37 +2329,12 @@ ahc_linux_release_simq(u_long arg)
scsi_unblock_requests(ahc->platform_data->host);
}
-static void
-ahc_linux_dev_timed_unfreeze(u_long arg)
-{
- struct ahc_linux_device *dev;
- struct ahc_softc *ahc;
- u_long s;
-
- dev = (struct ahc_linux_device *)arg;
- ahc = dev->target->ahc;
- ahc_lock(ahc, &s);
- dev->flags &= ~AHC_DEV_TIMER_ACTIVE;
- if (dev->qfrozen > 0)
- dev->qfrozen--;
- if (dev->qfrozen == 0
- && (dev->flags & AHC_DEV_ON_RUN_LIST) == 0)
- ahc_linux_run_device_queue(ahc, dev);
- if (TAILQ_EMPTY(&dev->busyq)
- && dev->active == 0)
- __ahc_linux_free_device(ahc, dev);
- ahc_unlock(ahc, &s);
-}
-
static int
-ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
+ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag)
{
struct ahc_softc *ahc;
- struct ahc_cmd *acmd;
- struct ahc_cmd *list_acmd;
struct ahc_linux_device *dev;
struct scb *pending_scb;
- u_long s;
u_int saved_scbptr;
u_int active_scb_index;
u_int last_phase;
@@ -2998,7 +2350,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
paused = FALSE;
wait = FALSE;
ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
- acmd = (struct ahc_cmd *)cmd;
printf("%s:%d:%d:%d: Attempting to queue a%s message\n",
ahc_name(ahc), cmd->device->channel,
@@ -3011,22 +2362,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
printf("\n");
/*
- * In all versions of Linux, we have to work around
- * a major flaw in how the mid-layer is locked down
- * if we are to sleep successfully in our error handler
- * while allowing our interrupt handler to run. Since
- * the midlayer acquires either the io_request_lock or
- * our lock prior to calling us, we must use the
- * spin_unlock_irq() method for unlocking our lock.
- * This will force interrupts to be enabled on the
- * current CPU. Since the EH thread should not have
- * been running with CPU interrupts disabled other than
- * by acquiring either the io_request_lock or our own
- * lock, this *should* be safe.
- */
- ahc_midlayer_entrypoint_lock(ahc, &s);
-
- /*
* First determine if we currently own this command.
* Start by searching the device queue. If not found
* there, check the pending_scb list. If not found
@@ -3034,7 +2369,7 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
* command, return success.
*/
dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id,
- cmd->device->lun, /*alloc*/FALSE);
+ cmd->device->lun);
if (dev == NULL) {
/*
@@ -3048,24 +2383,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
goto no_cmd;
}
- TAILQ_FOREACH(list_acmd, &dev->busyq, acmd_links.tqe) {
- if (list_acmd == acmd)
- break;
- }
-
- if (list_acmd != NULL) {
- printf("%s:%d:%d:%d: Command found on device queue\n",
- ahc_name(ahc), cmd->device->channel, cmd->device->id,
- cmd->device->lun);
- if (flag == SCB_ABORT) {
- TAILQ_REMOVE(&dev->busyq, list_acmd, acmd_links.tqe);
- cmd->result = DID_ABORT << 16;
- ahc_linux_queue_cmd_complete(ahc, cmd);
- retval = SUCCESS;
- goto done;
- }
- }
-
if ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED)) == 0
&& ahc_search_untagged_queues(ahc, cmd, cmd->device->id,
cmd->device->channel + 'A',
@@ -3299,53 +2616,42 @@ done:
}
spin_lock_irq(&ahc->platform_data->spin_lock);
}
- ahc_schedule_runq(ahc);
- ahc_linux_run_complete_queue(ahc);
- ahc_midlayer_entrypoint_unlock(ahc, &s);
return (retval);
}
void
ahc_platform_dump_card_state(struct ahc_softc *ahc)
{
- struct ahc_linux_device *dev;
- int channel;
- int maxchannel;
- int target;
- int maxtarget;
- int lun;
- int i;
-
- maxchannel = (ahc->features & AHC_TWIN) ? 1 : 0;
- maxtarget = (ahc->features & AHC_WIDE) ? 15 : 7;
- for (channel = 0; channel <= maxchannel; channel++) {
+}
- for (target = 0; target <=maxtarget; target++) {
+static void ahc_linux_exit(void);
- for (lun = 0; lun < AHC_NUM_LUNS; lun++) {
- struct ahc_cmd *acmd;
+static void ahc_linux_get_width(struct scsi_target *starget)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
+ struct ahc_tmode_tstate *tstate;
+ struct ahc_initiator_tinfo *tinfo
+ = ahc_fetch_transinfo(ahc,
+ starget->channel + 'A',
+ shost->this_id, starget->id, &tstate);
+ spi_width(starget) = tinfo->curr.width;
+}
- dev = ahc_linux_get_device(ahc, channel, target,
- lun, /*alloc*/FALSE);
- if (dev == NULL)
- continue;
+static void ahc_linux_set_width(struct scsi_target *starget, int width)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
+ struct ahc_devinfo devinfo;
+ unsigned long flags;
- printf("DevQ(%d:%d:%d): ",
- channel, target, lun);
- i = 0;
- TAILQ_FOREACH(acmd, &dev->busyq,
- acmd_links.tqe) {
- if (i++ > AHC_SCB_MAX)
- break;
- }
- printf("%d waiting\n", i);
- }
- }
- }
+ ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ ahc_lock(ahc, &flags);
+ ahc_set_width(ahc, &devinfo, width, AHC_TRANS_GOAL, FALSE);
+ ahc_unlock(ahc, &flags);
}
-static void ahc_linux_exit(void);
-
static void ahc_linux_get_period(struct scsi_target *starget)
{
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
@@ -3376,8 +2682,21 @@ static void ahc_linux_set_period(struct scsi_target *starget, int period)
if (offset == 0)
offset = MAX_OFFSET;
+ if (period < 9)
+ period = 9; /* 12.5ns is our minimum */
+ if (period == 9)
+ ppr_options |= MSG_EXT_PPR_DT_REQ;
+
ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
starget->channel + 'A', ROLE_INITIATOR);
+
+ /* all PPR requests apart from QAS require wide transfers */
+ if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) {
+ ahc_linux_get_width(starget);
+ if (spi_width(starget) == 0)
+ ppr_options &= MSG_EXT_PPR_QAS_REQ;
+ }
+
syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
ahc_lock(ahc, &flags);
ahc_set_syncrate(ahc, &devinfo, syncrate, period, offset,
@@ -3425,32 +2744,6 @@ static void ahc_linux_set_offset(struct scsi_target *starget, int offset)
ahc_unlock(ahc, &flags);
}
-static void ahc_linux_get_width(struct scsi_target *starget)
-{
- struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
- struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
- struct ahc_tmode_tstate *tstate;
- struct ahc_initiator_tinfo *tinfo
- = ahc_fetch_transinfo(ahc,
- starget->channel + 'A',
- shost->this_id, starget->id, &tstate);
- spi_width(starget) = tinfo->curr.width;
-}
-
-static void ahc_linux_set_width(struct scsi_target *starget, int width)
-{
- struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
- struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
- struct ahc_devinfo devinfo;
- unsigned long flags;
-
- ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
- starget->channel + 'A', ROLE_INITIATOR);
- ahc_lock(ahc, &flags);
- ahc_set_width(ahc, &devinfo, width, AHC_TRANS_GOAL, FALSE);
- ahc_unlock(ahc, &flags);
-}
-
static void ahc_linux_get_dt(struct scsi_target *starget)
{
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
@@ -3479,10 +2772,15 @@ static void ahc_linux_set_dt(struct scsi_target *starget, int dt)
unsigned long flags;
struct ahc_syncrate *syncrate;
+ if (dt) {
+ period = 9; /* 12.5ns is the only period valid for DT */
+ ppr_options |= MSG_EXT_PPR_DT_REQ;
+ } else if (period == 9)
+ period = 10; /* if resetting DT, period must be >= 25ns */
+
ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
starget->channel + 'A', ROLE_INITIATOR);
- syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,
- dt ? AHC_SYNCRATE_DT : AHC_SYNCRATE_ULTRA2);
+ syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,AHC_SYNCRATE_DT);
ahc_lock(ahc, &flags);
ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset,
ppr_options, AHC_TRANS_GOAL, FALSE);
@@ -3514,7 +2812,6 @@ static void ahc_linux_set_qas(struct scsi_target *starget, int qas)
unsigned int ppr_options = tinfo->curr.ppr_options
& ~MSG_EXT_PPR_QAS_REQ;
unsigned int period = tinfo->curr.period;
- unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
unsigned long flags;
struct ahc_syncrate *syncrate;
@@ -3523,8 +2820,7 @@ static void ahc_linux_set_qas(struct scsi_target *starget, int qas)
ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
starget->channel + 'A', ROLE_INITIATOR);
- syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,
- dt ? AHC_SYNCRATE_DT : AHC_SYNCRATE_ULTRA2);
+ syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
ahc_lock(ahc, &flags);
ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset,
ppr_options, AHC_TRANS_GOAL, FALSE);
@@ -3556,7 +2852,6 @@ static void ahc_linux_set_iu(struct scsi_target *starget, int iu)
unsigned int ppr_options = tinfo->curr.ppr_options
& ~MSG_EXT_PPR_IU_REQ;
unsigned int period = tinfo->curr.period;
- unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
unsigned long flags;
struct ahc_syncrate *syncrate;
@@ -3565,8 +2860,7 @@ static void ahc_linux_set_iu(struct scsi_target *starget, int iu)
ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
starget->channel + 'A', ROLE_INITIATOR);
- syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,
- dt ? AHC_SYNCRATE_DT : AHC_SYNCRATE_ULTRA2);
+ syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
ahc_lock(ahc, &flags);
ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset,
ppr_options, AHC_TRANS_GOAL, FALSE);
@@ -3599,7 +2893,6 @@ static struct spi_function_template ahc_linux_transport_functions = {
static int __init
ahc_linux_init(void)
{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
ahc_linux_transport_template = spi_attach_transport(&ahc_linux_transport_functions);
if (!ahc_linux_transport_template)
return -ENODEV;
@@ -3608,29 +2901,11 @@ ahc_linux_init(void)
spi_release_transport(ahc_linux_transport_template);
ahc_linux_exit();
return -ENODEV;
-#else
- scsi_register_module(MODULE_SCSI_HA, &aic7xxx_driver_template);
- if (aic7xxx_driver_template.present == 0) {
- scsi_unregister_module(MODULE_SCSI_HA,
- &aic7xxx_driver_template);
- return (-ENODEV);
- }
-
- return (0);
-#endif
}
static void
ahc_linux_exit(void)
{
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- /*
- * In 2.4 we have to unregister from the PCI core _after_
- * unregistering from the scsi midlayer to avoid dangling
- * references.
- */
- scsi_unregister_module(MODULE_SCSI_HA, &aic7xxx_driver_template);
-#endif
ahc_linux_pci_exit();
ahc_linux_eisa_exit();
spi_release_transport(ahc_linux_transport_template);
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.h b/drivers/scsi/aic7xxx/aic7xxx_osm.h
index ed9027bd8a4..30c200d5bcd 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.h
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.h
@@ -59,6 +59,7 @@
#ifndef _AIC7XXX_LINUX_H_
#define _AIC7XXX_LINUX_H_
+#include <linux/config.h>
#include <linux/types.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
@@ -66,18 +67,21 @@
#include <linux/pci.h>
#include <linux/smp_lock.h>
#include <linux/version.h>
+#include <linux/interrupt.h>
#include <linux/module.h>
+#include <linux/slab.h>
#include <asm/byteorder.h>
#include <asm/io.h>
-#include <linux/interrupt.h> /* For tasklet support. */
-#include <linux/config.h>
-#include <linux/slab.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_eh.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_tcq.h>
/* Core SCSI definitions */
#define AIC_LIB_PREFIX ahc
-#include "scsi.h"
-#include <scsi/scsi_host.h>
/* Name space conflict with BSD queue macros */
#ifdef LIST_HEAD
@@ -106,7 +110,7 @@
/************************* Forward Declarations *******************************/
struct ahc_softc;
typedef struct pci_dev *ahc_dev_softc_t;
-typedef Scsi_Cmnd *ahc_io_ctx_t;
+typedef struct scsi_cmnd *ahc_io_ctx_t;
/******************************* Byte Order ***********************************/
#define ahc_htobe16(x) cpu_to_be16(x)
@@ -144,7 +148,7 @@ typedef Scsi_Cmnd *ahc_io_ctx_t;
extern u_int aic7xxx_no_probe;
extern u_int aic7xxx_allow_memio;
extern int aic7xxx_detect_complete;
-extern Scsi_Host_Template aic7xxx_driver_template;
+extern struct scsi_host_template aic7xxx_driver_template;
/***************************** Bus Space/DMA **********************************/
@@ -174,11 +178,7 @@ struct ahc_linux_dma_tag
};
typedef struct ahc_linux_dma_tag* bus_dma_tag_t;
-struct ahc_linux_dmamap
-{
- dma_addr_t bus_addr;
-};
-typedef struct ahc_linux_dmamap* bus_dmamap_t;
+typedef dma_addr_t bus_dmamap_t;
typedef int bus_dma_filter_t(void*, dma_addr_t);
typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int);
@@ -281,12 +281,6 @@ ahc_scb_timer_reset(struct scb *scb, u_int usec)
/***************************** SMP support ************************************/
#include <linux/spinlock.h>
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) || defined(SCSI_HAS_HOST_LOCK))
-#define AHC_SCSI_HAS_HOST_LOCK 1
-#else
-#define AHC_SCSI_HAS_HOST_LOCK 0
-#endif
-
#define AIC7XXX_DRIVER_VERSION "6.2.36"
/**************************** Front End Queues ********************************/
@@ -328,20 +322,15 @@ struct ahc_cmd {
*/
TAILQ_HEAD(ahc_busyq, ahc_cmd);
typedef enum {
- AHC_DEV_UNCONFIGURED = 0x01,
AHC_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */
- AHC_DEV_TIMER_ACTIVE = 0x04, /* Our timer is active */
- AHC_DEV_ON_RUN_LIST = 0x08, /* Queued to be run later */
AHC_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */
AHC_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */
AHC_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */
- AHC_DEV_SLAVE_CONFIGURED = 0x80 /* slave_configure() has been called */
} ahc_linux_dev_flags;
struct ahc_linux_target;
struct ahc_linux_device {
TAILQ_ENTRY(ahc_linux_device) links;
- struct ahc_busyq busyq;
/*
* The number of transactions currently
@@ -382,11 +371,6 @@ struct ahc_linux_device {
ahc_linux_dev_flags flags;
/*
- * Per device timer.
- */
- struct timer_list timer;
-
- /*
* The high limit for the tags variable.
*/
u_int maxtags;
@@ -419,7 +403,7 @@ struct ahc_linux_device {
#define AHC_OTAG_THRESH 500
int lun;
- Scsi_Device *scsi_device;
+ struct scsi_device *scsi_device;
struct ahc_linux_target *target;
};
@@ -439,32 +423,16 @@ struct ahc_linux_target {
* manner and are allocated below 4GB, the number of S/G segments is
* unrestricted.
*/
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-/*
- * We dynamically adjust the number of segments in pre-2.5 kernels to
- * avoid fragmentation issues in the SCSI mid-layer's private memory
- * allocator. See aic7xxx_osm.c ahc_linux_size_nseg() for details.
- */
-extern u_int ahc_linux_nseg;
-#define AHC_NSEG ahc_linux_nseg
-#define AHC_LINUX_MIN_NSEG 64
-#else
#define AHC_NSEG 128
-#endif
/*
* Per-SCB OSM storage.
*/
-typedef enum {
- AHC_UP_EH_SEMAPHORE = 0x1
-} ahc_linux_scb_flags;
-
struct scb_platform_data {
struct ahc_linux_device *dev;
dma_addr_t buf_busaddr;
uint32_t xfer_len;
uint32_t sense_resid; /* Auto-Sense residual */
- ahc_linux_scb_flags flags;
};
/*
@@ -473,39 +441,24 @@ struct scb_platform_data {
* alignment restrictions of the various platforms supported by
* this driver.
*/
-typedef enum {
- AHC_RUN_CMPLT_Q_TIMER = 0x10
-} ahc_linux_softc_flags;
-
-TAILQ_HEAD(ahc_completeq, ahc_cmd);
-
struct ahc_platform_data {
/*
* Fields accessed from interrupt context.
*/
struct ahc_linux_target *targets[AHC_NUM_TARGETS];
- TAILQ_HEAD(, ahc_linux_device) device_runq;
- struct ahc_completeq completeq;
spinlock_t spin_lock;
- struct tasklet_struct runq_tasklet;
u_int qfrozen;
- pid_t dv_pid;
- struct timer_list completeq_timer;
struct timer_list reset_timer;
struct semaphore eh_sem;
- struct semaphore dv_sem;
- struct semaphore dv_cmd_sem; /* XXX This needs to be in
- * the target struct
- */
- struct scsi_device *dv_scsi_dev;
struct Scsi_Host *host; /* pointer to scsi host */
#define AHC_LINUX_NOIRQ ((uint32_t)~0)
uint32_t irq; /* IRQ for this adapter */
uint32_t bios_address;
uint32_t mem_busaddr; /* Mem Base Addr */
- uint64_t hw_dma_mask;
- ahc_linux_softc_flags flags;
+
+#define AHC_UP_EH_SEMAPHORE 0x1
+ uint32_t flags;
};
/************************** OS Utility Wrappers *******************************/
@@ -594,7 +547,7 @@ ahc_insb(struct ahc_softc * ahc, long port, uint8_t *array, int count)
/**************************** Initialization **********************************/
int ahc_linux_register_host(struct ahc_softc *,
- Scsi_Host_Template *);
+ struct scsi_host_template *);
uint64_t ahc_linux_get_memsize(void);
@@ -615,17 +568,6 @@ static __inline void ahc_lockinit(struct ahc_softc *);
static __inline void ahc_lock(struct ahc_softc *, unsigned long *flags);
static __inline void ahc_unlock(struct ahc_softc *, unsigned long *flags);
-/* Lock acquisition and release of the above lock in midlayer entry points. */
-static __inline void ahc_midlayer_entrypoint_lock(struct ahc_softc *,
- unsigned long *flags);
-static __inline void ahc_midlayer_entrypoint_unlock(struct ahc_softc *,
- unsigned long *flags);
-
-/* Lock held during command compeletion to the upper layer */
-static __inline void ahc_done_lockinit(struct ahc_softc *);
-static __inline void ahc_done_lock(struct ahc_softc *, unsigned long *flags);
-static __inline void ahc_done_unlock(struct ahc_softc *, unsigned long *flags);
-
/* Lock held during ahc_list manipulation and ahc softc frees */
extern spinlock_t ahc_list_spinlock;
static __inline void ahc_list_lockinit(void);
@@ -651,57 +593,6 @@ ahc_unlock(struct ahc_softc *ahc, unsigned long *flags)
}
static __inline void
-ahc_midlayer_entrypoint_lock(struct ahc_softc *ahc, unsigned long *flags)
-{
- /*
- * In 2.5.X and some 2.4.X versions, the midlayer takes our
- * lock just before calling us, so we avoid locking again.
- * For other kernel versions, the io_request_lock is taken
- * just before our entry point is called. In this case, we
- * trade the io_request_lock for our per-softc lock.
- */
-#if AHC_SCSI_HAS_HOST_LOCK == 0
- spin_unlock(&io_request_lock);
- spin_lock(&ahc->platform_data->spin_lock);
-#endif
-}
-
-static __inline void
-ahc_midlayer_entrypoint_unlock(struct ahc_softc *ahc, unsigned long *flags)
-{
-#if AHC_SCSI_HAS_HOST_LOCK == 0
- spin_unlock(&ahc->platform_data->spin_lock);
- spin_lock(&io_request_lock);
-#endif
-}
-
-static __inline void
-ahc_done_lockinit(struct ahc_softc *ahc)
-{
- /*
- * In 2.5.X, our own lock is held during completions.
- * In previous versions, the io_request_lock is used.
- * In either case, we can't initialize this lock again.
- */
-}
-
-static __inline void
-ahc_done_lock(struct ahc_softc *ahc, unsigned long *flags)
-{
-#if AHC_SCSI_HAS_HOST_LOCK == 0
- spin_lock_irqsave(&io_request_lock, *flags);
-#endif
-}
-
-static __inline void
-ahc_done_unlock(struct ahc_softc *ahc, unsigned long *flags)
-{
-#if AHC_SCSI_HAS_HOST_LOCK == 0
- spin_unlock_irqrestore(&io_request_lock, *flags);
-#endif
-}
-
-static __inline void
ahc_list_lockinit(void)
{
spin_lock_init(&ahc_list_spinlock);
@@ -767,12 +658,6 @@ typedef enum
} ahc_power_state;
/**************************** VL/EISA Routines ********************************/
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) \
- && (defined(__i386__) || defined(__alpha__)) \
- && (!defined(CONFIG_EISA)))
-#define CONFIG_EISA
-#endif
-
#ifdef CONFIG_EISA
extern uint32_t aic7xxx_probe_eisa_vl;
int ahc_linux_eisa_init(void);
@@ -888,22 +773,18 @@ ahc_flush_device_writes(struct ahc_softc *ahc)
}
/**************************** Proc FS Support *********************************/
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-int ahc_linux_proc_info(char *, char **, off_t, int, int, int);
-#else
int ahc_linux_proc_info(struct Scsi_Host *, char *, char **,
off_t, int, int);
-#endif
/*************************** Domain Validation ********************************/
/*********************** Transaction Access Wrappers *************************/
-static __inline void ahc_cmd_set_transaction_status(Scsi_Cmnd *, uint32_t);
+static __inline void ahc_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t);
static __inline void ahc_set_transaction_status(struct scb *, uint32_t);
-static __inline void ahc_cmd_set_scsi_status(Scsi_Cmnd *, uint32_t);
+static __inline void ahc_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t);
static __inline void ahc_set_scsi_status(struct scb *, uint32_t);
-static __inline uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd *cmd);
+static __inline uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd);
static __inline uint32_t ahc_get_transaction_status(struct scb *);
-static __inline uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd *cmd);
+static __inline uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd);
static __inline uint32_t ahc_get_scsi_status(struct scb *);
static __inline void ahc_set_transaction_tag(struct scb *, int, u_int);
static __inline u_long ahc_get_transfer_length(struct scb *);
@@ -922,7 +803,7 @@ static __inline void ahc_platform_scb_free(struct ahc_softc *ahc,
static __inline void ahc_freeze_scb(struct scb *scb);
static __inline
-void ahc_cmd_set_transaction_status(Scsi_Cmnd *cmd, uint32_t status)
+void ahc_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
{
cmd->result &= ~(CAM_STATUS_MASK << 16);
cmd->result |= status << 16;
@@ -935,7 +816,7 @@ void ahc_set_transaction_status(struct scb *scb, uint32_t status)
}
static __inline
-void ahc_cmd_set_scsi_status(Scsi_Cmnd *cmd, uint32_t status)
+void ahc_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
{
cmd->result &= ~0xFFFF;
cmd->result |= status;
@@ -948,7 +829,7 @@ void ahc_set_scsi_status(struct scb *scb, uint32_t status)
}
static __inline
-uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd *cmd)
+uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd)
{
return ((cmd->result >> 16) & CAM_STATUS_MASK);
}
@@ -960,7 +841,7 @@ uint32_t ahc_get_transaction_status(struct scb *scb)
}
static __inline
-uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd *cmd)
+uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd)
{
return (cmd->result & 0xFFFF);
}
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
index 6f6674aa31e..2a0ebce83e7 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
@@ -221,13 +221,11 @@ ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
&& ahc_linux_get_memsize() > 0x80000000
&& pci_set_dma_mask(pdev, mask_39bit) == 0) {
ahc->flags |= AHC_39BIT_ADDRESSING;
- ahc->platform_data->hw_dma_mask = mask_39bit;
} else {
if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
return (-ENODEV);
}
- ahc->platform_data->hw_dma_mask = DMA_32BIT_MASK;
}
ahc->dev_softc = pci;
error = ahc_pci_config(ahc, entry);
@@ -236,15 +234,8 @@ ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
return (-error);
}
pci_set_drvdata(pdev, ahc);
- if (aic7xxx_detect_complete) {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
+ if (aic7xxx_detect_complete)
ahc_linux_register_host(ahc, &aic7xxx_driver_template);
-#else
- printf("aic7xxx: ignoring PCI device found after "
- "initialization\n");
- return (-ENODEV);
-#endif
- }
return (0);
}
diff --git a/drivers/scsi/aic7xxx/aic7xxx_proc.c b/drivers/scsi/aic7xxx/aic7xxx_proc.c
index 85e80eecc9d..5fece859fbd 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_proc.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_proc.c
@@ -289,13 +289,8 @@ done:
* Return information to handle /proc support for the driver.
*/
int
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-ahc_linux_proc_info(char *buffer, char **start, off_t offset,
- int length, int hostno, int inout)
-#else
ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
off_t offset, int length, int inout)
-#endif
{
struct ahc_softc *ahc;
struct info_str info;
@@ -307,15 +302,7 @@ ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
retval = -EINVAL;
ahc_list_lock(&s);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- TAILQ_FOREACH(ahc, &ahc_tailq, links) {
- if (ahc->platform_data->host->host_no == hostno)
- break;
- }
-#else
ahc = ahc_find_softc(*(struct ahc_softc **)shost->hostdata);
-#endif
-
if (ahc == NULL)
goto done;
diff --git a/drivers/scsi/aic7xxx/aiclib.c b/drivers/scsi/aic7xxx/aiclib.c
index 79bfd9efd8e..7c5a6db0e67 100644
--- a/drivers/scsi/aic7xxx/aiclib.c
+++ b/drivers/scsi/aic7xxx/aiclib.c
@@ -35,7 +35,6 @@
#include <linux/version.h>
/* Core SCSI definitions */
-#include "scsi.h"
#include <scsi/scsi_host.h>
#include "aiclib.h"
#include "cam.h"
diff --git a/drivers/scsi/ata_piix.c b/drivers/scsi/ata_piix.c
index 3867f91ef8c..3be54643925 100644
--- a/drivers/scsi/ata_piix.c
+++ b/drivers/scsi/ata_piix.c
@@ -153,6 +153,7 @@ static struct ata_port_operations piix_pata_ops = {
.port_start = ata_port_start,
.port_stop = ata_port_stop,
+ .host_stop = ata_host_stop,
};
static struct ata_port_operations piix_sata_ops = {
@@ -180,6 +181,7 @@ static struct ata_port_operations piix_sata_ops = {
.port_start = ata_port_start,
.port_stop = ata_port_stop,
+ .host_stop = ata_host_stop,
};
static struct ata_port_info piix_port_info[] = {
@@ -663,15 +665,6 @@ static int piix_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
return ata_pci_init_one(pdev, port_info, n_ports);
}
-/**
- * piix_init -
- *
- * LOCKING:
- *
- * RETURNS:
- *
- */
-
static int __init piix_init(void)
{
int rc;
@@ -687,13 +680,6 @@ static int __init piix_init(void)
return 0;
}
-/**
- * piix_exit -
- *
- * LOCKING:
- *
- */
-
static void __exit piix_exit(void)
{
pci_unregister_driver(&piix_pci_driver);
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 2e2486b035d..83f062ed908 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -179,8 +179,18 @@ static void idescsi_input_buffers (ide_drive_t *drive, idescsi_pc_t *pc, unsigne
return;
}
count = min(pc->sg->length - pc->b_count, bcount);
- buf = page_address(pc->sg->page) + pc->sg->offset;
- drive->hwif->atapi_input_bytes(drive, buf + pc->b_count, count);
+ if (PageHighMem(pc->sg->page)) {
+ unsigned long flags;
+
+ local_irq_save(flags);
+ buf = kmap_atomic(pc->sg->page, KM_IRQ0) + pc->sg->offset;
+ drive->hwif->atapi_input_bytes(drive, buf + pc->b_count, count);
+ kunmap_atomic(buf - pc->sg->offset, KM_IRQ0);
+ local_irq_restore(flags);
+ } else {
+ buf = page_address(pc->sg->page) + pc->sg->offset;
+ drive->hwif->atapi_input_bytes(drive, buf + pc->b_count, count);
+ }
bcount -= count; pc->b_count += count;
if (pc->b_count == pc->sg->length) {
pc->sg++;
@@ -201,8 +211,18 @@ static void idescsi_output_buffers (ide_drive_t *drive, idescsi_pc_t *pc, unsign
return;
}
count = min(pc->sg->length - pc->b_count, bcount);
- buf = page_address(pc->sg->page) + pc->sg->offset;
- drive->hwif->atapi_output_bytes(drive, buf + pc->b_count, count);
+ if (PageHighMem(pc->sg->page)) {
+ unsigned long flags;
+
+ local_irq_save(flags);
+ buf = kmap_atomic(pc->sg->page, KM_IRQ0) + pc->sg->offset;
+ drive->hwif->atapi_output_bytes(drive, buf + pc->b_count, count);
+ kunmap_atomic(buf - pc->sg->offset, KM_IRQ0);
+ local_irq_restore(flags);
+ } else {
+ buf = page_address(pc->sg->page) + pc->sg->offset;
+ drive->hwif->atapi_output_bytes(drive, buf + pc->b_count, count);
+ }
bcount -= count; pc->b_count += count;
if (pc->b_count == pc->sg->length) {
pc->sg++;
@@ -713,7 +733,6 @@ static void idescsi_add_settings(ide_drive_t *drive)
*/
static void idescsi_setup (ide_drive_t *drive, idescsi_scsi_t *scsi)
{
- DRIVER(drive)->busy++;
if (drive->id && (drive->id->config & 0x0060) == 0x20)
set_bit (IDESCSI_DRQ_INTERRUPT, &scsi->flags);
set_bit(IDESCSI_TRANSFORM, &scsi->transform);
@@ -722,17 +741,16 @@ static void idescsi_setup (ide_drive_t *drive, idescsi_scsi_t *scsi)
set_bit(IDESCSI_LOG_CMD, &scsi->log);
#endif /* IDESCSI_DEBUG_LOG */
idescsi_add_settings(drive);
- DRIVER(drive)->busy--;
}
-static int idescsi_cleanup (ide_drive_t *drive)
+static int ide_scsi_remove(struct device *dev)
{
+ ide_drive_t *drive = to_ide_device(dev);
struct Scsi_Host *scsihost = drive->driver_data;
struct ide_scsi_obj *scsi = scsihost_to_idescsi(scsihost);
struct gendisk *g = scsi->disk;
- if (ide_unregister_subdriver(drive))
- return 1;
+ ide_unregister_subdriver(drive, scsi->driver);
ide_unregister_region(g);
@@ -746,7 +764,7 @@ static int idescsi_cleanup (ide_drive_t *drive)
return 0;
}
-static int idescsi_attach(ide_drive_t *drive);
+static int ide_scsi_probe(struct device *);
#ifdef CONFIG_PROC_FS
static ide_proc_entry_t idescsi_proc[] = {
@@ -757,24 +775,22 @@ static ide_proc_entry_t idescsi_proc[] = {
# define idescsi_proc NULL
#endif
-/*
- * IDE subdriver functions, registered with ide.c
- */
static ide_driver_t idescsi_driver = {
.owner = THIS_MODULE,
- .name = "ide-scsi",
+ .gen_driver = {
+ .name = "ide-scsi",
+ .bus = &ide_bus_type,
+ .probe = ide_scsi_probe,
+ .remove = ide_scsi_remove,
+ },
.version = IDESCSI_VERSION,
.media = ide_scsi,
- .busy = 0,
.supports_dsc_overlap = 0,
.proc = idescsi_proc,
- .attach = idescsi_attach,
- .cleanup = idescsi_cleanup,
.do_request = idescsi_do_request,
.end_request = idescsi_end_request,
.error = idescsi_atapi_error,
.abort = idescsi_atapi_abort,
- .drives = LIST_HEAD_INIT(idescsi_driver.drives),
};
static int idescsi_ide_open(struct inode *inode, struct file *filp)
@@ -821,8 +837,6 @@ static struct block_device_operations idescsi_ops = {
.ioctl = idescsi_ide_ioctl,
};
-static int idescsi_attach(ide_drive_t *drive);
-
static int idescsi_slave_configure(struct scsi_device * sdp)
{
/* Configure detected device */
@@ -1095,8 +1109,9 @@ static struct scsi_host_template idescsi_template = {
.proc_name = "ide-scsi",
};
-static int idescsi_attach(ide_drive_t *drive)
+static int ide_scsi_probe(struct device *dev)
{
+ ide_drive_t *drive = to_ide_device(dev);
idescsi_scsi_t *idescsi;
struct Scsi_Host *host;
struct gendisk *g;
@@ -1112,7 +1127,7 @@ static int idescsi_attach(ide_drive_t *drive)
!drive->present ||
drive->media == ide_disk ||
!(host = scsi_host_alloc(&idescsi_template,sizeof(idescsi_scsi_t))))
- return 1;
+ return -ENODEV;
g = alloc_disk(1 << PARTN_BITS);
if (!g)
@@ -1138,20 +1153,19 @@ static int idescsi_attach(ide_drive_t *drive)
idescsi->host = host;
idescsi->disk = g;
g->private_data = &idescsi->driver;
- err = ide_register_subdriver(drive, &idescsi_driver);
+ ide_register_subdriver(drive, &idescsi_driver);
+ err = 0;
+ idescsi_setup(drive, idescsi);
+ g->fops = &idescsi_ops;
+ ide_register_region(g);
+ err = scsi_add_host(host, &drive->gendev);
if (!err) {
- idescsi_setup (drive, idescsi);
- g->fops = &idescsi_ops;
- ide_register_region(g);
- err = scsi_add_host(host, &drive->gendev);
- if (!err) {
- scsi_scan_host(host);
- return 0;
- }
- /* fall through on error */
- ide_unregister_region(g);
- ide_unregister_subdriver(drive);
+ scsi_scan_host(host);
+ return 0;
}
+ /* fall through on error */
+ ide_unregister_region(g);
+ ide_unregister_subdriver(drive, &idescsi_driver);
put_disk(g);
out_host_put:
@@ -1161,12 +1175,12 @@ out_host_put:
static int __init init_idescsi_module(void)
{
- return ide_register_driver(&idescsi_driver);
+ return driver_register(&idescsi_driver.gen_driver);
}
static void __exit exit_idescsi_module(void)
{
- ide_unregister_driver(&idescsi_driver);
+ driver_unregister(&idescsi_driver.gen_driver);
}
module_init(init_idescsi_module);
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 8b5a3f00083..84c4770e5bb 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -186,6 +186,28 @@ static void ata_tf_load_mmio(struct ata_port *ap, struct ata_taskfile *tf)
ata_wait_idle(ap);
}
+
+/**
+ * ata_tf_load - send taskfile registers to host controller
+ * @ap: Port to which output is sent
+ * @tf: ATA taskfile register set
+ *
+ * Outputs ATA taskfile to standard ATA host controller using MMIO
+ * or PIO as indicated by the ATA_FLAG_MMIO flag.
+ * Writes the control, feature, nsect, lbal, lbam, and lbah registers.
+ * Optionally (ATA_TFLAG_LBA48) writes hob_feature, hob_nsect,
+ * hob_lbal, hob_lbam, and hob_lbah.
+ *
+ * This function waits for idle (!BUSY and !DRQ) after writing
+ * registers. If the control register has a new value, this
+ * function also waits for idle after writing control and before
+ * writing the remaining registers.
+ *
+ * May be used as the tf_load() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
void ata_tf_load(struct ata_port *ap, struct ata_taskfile *tf)
{
if (ap->flags & ATA_FLAG_MMIO)
@@ -195,11 +217,11 @@ void ata_tf_load(struct ata_port *ap, struct ata_taskfile *tf)
}
/**
- * ata_exec_command - issue ATA command to host controller
+ * ata_exec_command_pio - issue ATA command to host controller
* @ap: port to which command is being issued
* @tf: ATA taskfile register set
*
- * Issues PIO/MMIO write to ATA command register, with proper
+ * Issues PIO write to ATA command register, with proper
* synchronization with interrupt handler / other threads.
*
* LOCKING:
@@ -235,6 +257,18 @@ static void ata_exec_command_mmio(struct ata_port *ap, struct ata_taskfile *tf)
ata_pause(ap);
}
+
+/**
+ * ata_exec_command - issue ATA command to host controller
+ * @ap: port to which command is being issued
+ * @tf: ATA taskfile register set
+ *
+ * Issues PIO/MMIO write to ATA command register, with proper
+ * synchronization with interrupt handler / other threads.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
void ata_exec_command(struct ata_port *ap, struct ata_taskfile *tf)
{
if (ap->flags & ATA_FLAG_MMIO)
@@ -305,7 +339,7 @@ void ata_tf_to_host_nolock(struct ata_port *ap, struct ata_taskfile *tf)
}
/**
- * ata_tf_read - input device's ATA taskfile shadow registers
+ * ata_tf_read_pio - input device's ATA taskfile shadow registers
* @ap: Port from which input is read
* @tf: ATA taskfile register set for storing input
*
@@ -368,6 +402,23 @@ static void ata_tf_read_mmio(struct ata_port *ap, struct ata_taskfile *tf)
}
}
+
+/**
+ * ata_tf_read - input device's ATA taskfile shadow registers
+ * @ap: Port from which input is read
+ * @tf: ATA taskfile register set for storing input
+ *
+ * Reads ATA taskfile registers for currently-selected device
+ * into @tf.
+ *
+ * Reads nsect, lbal, lbam, lbah, and device. If ATA_TFLAG_LBA48
+ * is set, also reads the hob registers.
+ *
+ * May be used as the tf_read() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
{
if (ap->flags & ATA_FLAG_MMIO)
@@ -381,7 +432,7 @@ void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
* @ap: port where the device is
*
* Reads ATA taskfile status register for currently-selected device
- * and return it's value. This also clears pending interrupts
+ * and return its value. This also clears pending interrupts
* from this device
*
* LOCKING:
@@ -397,7 +448,7 @@ static u8 ata_check_status_pio(struct ata_port *ap)
* @ap: port where the device is
*
* Reads ATA taskfile status register for currently-selected device
- * via MMIO and return it's value. This also clears pending interrupts
+ * via MMIO and return its value. This also clears pending interrupts
* from this device
*
* LOCKING:
@@ -408,6 +459,20 @@ static u8 ata_check_status_mmio(struct ata_port *ap)
return readb((void __iomem *) ap->ioaddr.status_addr);
}
+
+/**
+ * ata_check_status - Read device status reg & clear interrupt
+ * @ap: port where the device is
+ *
+ * Reads ATA taskfile status register for currently-selected device
+ * and return its value. This also clears pending interrupts
+ * from this device
+ *
+ * May be used as the check_status() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
u8 ata_check_status(struct ata_port *ap)
{
if (ap->flags & ATA_FLAG_MMIO)
@@ -415,6 +480,20 @@ u8 ata_check_status(struct ata_port *ap)
return ata_check_status_pio(ap);
}
+
+/**
+ * ata_altstatus - Read device alternate status reg
+ * @ap: port where the device is
+ *
+ * Reads ATA taskfile alternate status register for
+ * currently-selected device and return its value.
+ *
+ * Note: may NOT be used as the check_altstatus() entry in
+ * ata_port_operations.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
u8 ata_altstatus(struct ata_port *ap)
{
if (ap->ops->check_altstatus)
@@ -425,6 +504,20 @@ u8 ata_altstatus(struct ata_port *ap)
return inb(ap->ioaddr.altstatus_addr);
}
+
+/**
+ * ata_chk_err - Read device error reg
+ * @ap: port where the device is
+ *
+ * Reads ATA taskfile error register for
+ * currently-selected device and return its value.
+ *
+ * Note: may NOT be used as the check_err() entry in
+ * ata_port_operations.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
u8 ata_chk_err(struct ata_port *ap)
{
if (ap->ops->check_err)
@@ -873,10 +966,24 @@ void ata_dev_id_string(u16 *id, unsigned char *s,
}
}
+
+/**
+ * ata_noop_dev_select - Select device 0/1 on ATA bus
+ * @ap: ATA channel to manipulate
+ * @device: ATA device (numbered from zero) to select
+ *
+ * This function performs no actual function.
+ *
+ * May be used as the dev_select() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * caller.
+ */
void ata_noop_dev_select (struct ata_port *ap, unsigned int device)
{
}
+
/**
* ata_std_dev_select - Select device 0/1 on ATA bus
* @ap: ATA channel to manipulate
@@ -884,7 +991,9 @@ void ata_noop_dev_select (struct ata_port *ap, unsigned int device)
*
* Use the method defined in the ATA specification to
* make either device 0, or device 1, active on the
- * ATA channel.
+ * ATA channel. Works with both PIO and MMIO.
+ *
+ * May be used as the dev_select() entry in ata_port_operations.
*
* LOCKING:
* caller.
@@ -1221,7 +1330,12 @@ void ata_dev_config(struct ata_port *ap, unsigned int i)
* ata_bus_probe - Reset and probe ATA bus
* @ap: Bus to probe
*
+ * Master ATA bus probing function. Initiates a hardware-dependent
+ * bus reset, then attempts to identify any devices found on
+ * the bus.
+ *
* LOCKING:
+ * PCI/etc. bus probe sem.
*
* RETURNS:
* Zero on success, non-zero on error.
@@ -1259,10 +1373,14 @@ err_out:
}
/**
- * ata_port_probe -
- * @ap:
+ * ata_port_probe - Mark port as enabled
+ * @ap: Port for which we indicate enablement
*
- * LOCKING:
+ * Modify @ap data structure such that the system
+ * thinks that the entire port is enabled.
+ *
+ * LOCKING: host_set lock, or some other form of
+ * serialization.
*/
void ata_port_probe(struct ata_port *ap)
@@ -1271,10 +1389,15 @@ void ata_port_probe(struct ata_port *ap)
}
/**
- * __sata_phy_reset -
- * @ap:
+ * __sata_phy_reset - Wake/reset a low-level SATA PHY
+ * @ap: SATA port associated with target SATA PHY.
+ *
+ * This function issues commands to standard SATA Sxxx
+ * PHY registers, to wake up the phy (and device), and
+ * clear any reset condition.
*
* LOCKING:
+ * PCI/etc. bus probe sem.
*
*/
void __sata_phy_reset(struct ata_port *ap)
@@ -1283,11 +1406,11 @@ void __sata_phy_reset(struct ata_port *ap)
unsigned long timeout = jiffies + (HZ * 5);
if (ap->flags & ATA_FLAG_SATA_RESET) {
- scr_write(ap, SCR_CONTROL, 0x301); /* issue phy wake/reset */
- scr_read(ap, SCR_STATUS); /* dummy read; flush */
+ /* issue phy wake/reset */
+ scr_write_flush(ap, SCR_CONTROL, 0x301);
udelay(400); /* FIXME: a guess */
}
- scr_write(ap, SCR_CONTROL, 0x300); /* issue phy wake/clear reset */
+ scr_write_flush(ap, SCR_CONTROL, 0x300); /* phy wake/clear reset */
/* wait for phy to become ready, if necessary */
do {
@@ -1319,10 +1442,14 @@ void __sata_phy_reset(struct ata_port *ap)
}
/**
- * __sata_phy_reset -
- * @ap:
+ * sata_phy_reset - Reset SATA bus.
+ * @ap: SATA port associated with target SATA PHY.
+ *
+ * This function resets the SATA bus, and then probes
+ * the bus for devices.
*
* LOCKING:
+ * PCI/etc. bus probe sem.
*
*/
void sata_phy_reset(struct ata_port *ap)
@@ -1334,10 +1461,16 @@ void sata_phy_reset(struct ata_port *ap)
}
/**
- * ata_port_disable -
- * @ap:
+ * ata_port_disable - Disable port.
+ * @ap: Port to be disabled.
*
- * LOCKING:
+ * Modify @ap data structure such that the system
+ * thinks that the entire port is disabled, and should
+ * never attempt to probe or communicate with devices
+ * on this port.
+ *
+ * LOCKING: host_set lock, or some other form of
+ * serialization.
*/
void ata_port_disable(struct ata_port *ap)
@@ -1446,7 +1579,10 @@ static void ata_host_set_dma(struct ata_port *ap, u8 xfer_mode,
* ata_set_mode - Program timings and issue SET FEATURES - XFER
* @ap: port on which timings will be programmed
*
+ * Set ATA device disk transfer mode (PIO3, UDMA6, etc.).
+ *
* LOCKING:
+ * PCI/etc. bus probe sem.
*
*/
static void ata_set_mode(struct ata_port *ap)
@@ -1497,7 +1633,10 @@ err_out:
* @tmout_pat: impatience timeout
* @tmout: overall timeout
*
- * LOCKING:
+ * Sleep until ATA Status register bit BSY clears,
+ * or a timeout occurs.
+ *
+ * LOCKING: None.
*
*/
@@ -1583,10 +1722,14 @@ static void ata_bus_post_reset(struct ata_port *ap, unsigned int devmask)
}
/**
- * ata_bus_edd -
- * @ap:
+ * ata_bus_edd - Issue EXECUTE DEVICE DIAGNOSTIC command.
+ * @ap: Port to reset and probe
+ *
+ * Use the EXECUTE DEVICE DIAGNOSTIC command to reset and
+ * probe the bus. Not often used these days.
*
* LOCKING:
+ * PCI/etc. bus probe sem.
*
*/
@@ -1663,8 +1806,8 @@ static unsigned int ata_bus_softreset(struct ata_port *ap,
* the device is ATA or ATAPI.
*
* LOCKING:
- * Inherited from caller. Some functions called by this function
- * obtain the host_set lock.
+ * PCI/etc. bus probe sem.
+ * Obtains host_set lock.
*
* SIDE EFFECTS:
* Sets ATA_FLAG_PORT_DISABLED if bus reset fails.
@@ -1906,7 +2049,11 @@ static int fgb(u32 bitmap)
* @xfer_mode_out: (output) SET FEATURES - XFER MODE code
* @xfer_shift_out: (output) bit shift that selects this mode
*
+ * Based on host and device capabilities, determine the
+ * maximum transfer mode that is amenable to all.
+ *
* LOCKING:
+ * PCI/etc. bus probe sem.
*
* RETURNS:
* Zero on success, negative on error.
@@ -1939,7 +2086,11 @@ static int ata_choose_xfer_mode(struct ata_port *ap,
* @ap: Port associated with device @dev
* @dev: Device to which command will be sent
*
+ * Issue SET FEATURES - XFER MODE command to device @dev
+ * on port @ap.
+ *
* LOCKING:
+ * PCI/etc. bus probe sem.
*/
static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev)
@@ -1977,10 +2128,13 @@ static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev)
}
/**
- * ata_sg_clean -
- * @qc:
+ * ata_sg_clean - Unmap DMA memory associated with command
+ * @qc: Command containing DMA memory to be released
+ *
+ * Unmap all mapped DMA memory associated with this command.
*
* LOCKING:
+ * spin_lock_irqsave(host_set lock)
*/
static void ata_sg_clean(struct ata_queued_cmd *qc)
@@ -2011,7 +2165,11 @@ static void ata_sg_clean(struct ata_queued_cmd *qc)
* ata_fill_sg - Fill PCI IDE PRD table
* @qc: Metadata associated with taskfile to be transferred
*
+ * Fill PCI IDE PRD (scatter-gather) table with segments
+ * associated with the current disk command.
+ *
* LOCKING:
+ * spin_lock_irqsave(host_set lock)
*
*/
static void ata_fill_sg(struct ata_queued_cmd *qc)
@@ -2058,7 +2216,13 @@ static void ata_fill_sg(struct ata_queued_cmd *qc)
* ata_check_atapi_dma - Check whether ATAPI DMA can be supported
* @qc: Metadata associated with taskfile to check
*
+ * Allow low-level driver to filter ATA PACKET commands, returning
+ * a status indicating whether or not it is OK to use DMA for the
+ * supplied PACKET command.
+ *
* LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ *
* RETURNS: 0 when ATAPI DMA can be used
* nonzero otherwise
*/
@@ -2076,6 +2240,8 @@ int ata_check_atapi_dma(struct ata_queued_cmd *qc)
* ata_qc_prep - Prepare taskfile for submission
* @qc: Metadata associated with taskfile to be prepared
*
+ * Prepare ATA taskfile for submission.
+ *
* LOCKING:
* spin_lock_irqsave(host_set lock)
*/
@@ -2087,6 +2253,32 @@ void ata_qc_prep(struct ata_queued_cmd *qc)
ata_fill_sg(qc);
}
+/**
+ * ata_sg_init_one - Associate command with memory buffer
+ * @qc: Command to be associated
+ * @buf: Memory buffer
+ * @buflen: Length of memory buffer, in bytes.
+ *
+ * Initialize the data-related elements of queued_cmd @qc
+ * to point to a single memory buffer, @buf of byte length @buflen.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
+
+
+
+/**
+ * ata_sg_init_one - Prepare a one-entry scatter-gather list.
+ * @qc: Queued command
+ * @buf: transfer buffer
+ * @buflen: length of buf
+ *
+ * Builds a single-entry scatter-gather list to initiate a
+ * transfer utilizing the specified buffer.
+ *
+ * LOCKING:
+ */
void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen)
{
struct scatterlist *sg;
@@ -2101,9 +2293,35 @@ void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen)
sg = qc->sg;
sg->page = virt_to_page(buf);
sg->offset = (unsigned long) buf & ~PAGE_MASK;
- sg_dma_len(sg) = buflen;
+ sg->length = buflen;
}
+/**
+ * ata_sg_init - Associate command with scatter-gather table.
+ * @qc: Command to be associated
+ * @sg: Scatter-gather table.
+ * @n_elem: Number of elements in s/g table.
+ *
+ * Initialize the data-related elements of queued_cmd @qc
+ * to point to a scatter-gather table @sg, containing @n_elem
+ * elements.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
+
+
+/**
+ * ata_sg_init - Assign a scatter gather list to a queued command
+ * @qc: Queued command
+ * @sg: Scatter-gather list
+ * @n_elem: length of sg list
+ *
+ * Attaches a scatter-gather list to a queued command.
+ *
+ * LOCKING:
+ */
+
void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
unsigned int n_elem)
{
@@ -2113,14 +2331,16 @@ void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
}
/**
- * ata_sg_setup_one -
- * @qc:
+ * ata_sg_setup_one - DMA-map the memory buffer associated with a command.
+ * @qc: Command with memory buffer to be mapped.
+ *
+ * DMA-map the memory buffer associated with queued_cmd @qc.
*
* LOCKING:
* spin_lock_irqsave(host_set lock)
*
* RETURNS:
- *
+ * Zero on success, negative on error.
*/
static int ata_sg_setup_one(struct ata_queued_cmd *qc)
@@ -2131,11 +2351,12 @@ static int ata_sg_setup_one(struct ata_queued_cmd *qc)
dma_addr_t dma_address;
dma_address = dma_map_single(ap->host_set->dev, qc->buf_virt,
- sg_dma_len(sg), dir);
+ sg->length, dir);
if (dma_mapping_error(dma_address))
return -1;
sg_dma_address(sg) = dma_address;
+ sg_dma_len(sg) = sg->length;
DPRINTK("mapped buffer of %d bytes for %s\n", sg_dma_len(sg),
qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");
@@ -2144,13 +2365,16 @@ static int ata_sg_setup_one(struct ata_queued_cmd *qc)
}
/**
- * ata_sg_setup -
- * @qc:
+ * ata_sg_setup - DMA-map the scatter-gather table associated with a command.
+ * @qc: Command with scatter-gather table to be mapped.
+ *
+ * DMA-map the scatter-gather table associated with queued_cmd @qc.
*
* LOCKING:
* spin_lock_irqsave(host_set lock)
*
* RETURNS:
+ * Zero on success, negative on error.
*
*/
@@ -2180,6 +2404,7 @@ static int ata_sg_setup(struct ata_queued_cmd *qc)
* @ap:
*
* LOCKING:
+ * None. (executing in kernel thread context)
*
* RETURNS:
*
@@ -2227,6 +2452,7 @@ static unsigned long ata_pio_poll(struct ata_port *ap)
* @ap:
*
* LOCKING:
+ * None. (executing in kernel thread context)
*/
static void ata_pio_complete (struct ata_port *ap)
@@ -2269,6 +2495,18 @@ static void ata_pio_complete (struct ata_port *ap)
ata_qc_complete(qc, drv_stat);
}
+
+/**
+ * swap_buf_le16 -
+ * @buf: Buffer to swap
+ * @buf_words: Number of 16-bit words in buffer.
+ *
+ * Swap halves of 16-bit words if needed to convert from
+ * little-endian byte order to native cpu byte order, or
+ * vice-versa.
+ *
+ * LOCKING:
+ */
void swap_buf_le16(u16 *buf, unsigned int buf_words)
{
#ifdef __BIG_ENDIAN
@@ -2340,7 +2578,7 @@ static void ata_pio_sector(struct ata_queued_cmd *qc)
qc->cursect++;
qc->cursg_ofs++;
- if ((qc->cursg_ofs * ATA_SECT_SIZE) == sg_dma_len(&sg[qc->cursg])) {
+ if ((qc->cursg_ofs * ATA_SECT_SIZE) == (&sg[qc->cursg])->length) {
qc->cursg++;
qc->cursg_ofs = 0;
}
@@ -2377,7 +2615,7 @@ next_page:
page = nth_page(page, (offset >> PAGE_SHIFT));
offset %= PAGE_SIZE;
- count = min(sg_dma_len(sg) - qc->cursg_ofs, bytes);
+ count = min(sg->length - qc->cursg_ofs, bytes);
/* don't cross page boundaries */
count = min(count, (unsigned int)PAGE_SIZE - offset);
@@ -2388,7 +2626,7 @@ next_page:
qc->curbytes += count;
qc->cursg_ofs += count;
- if (qc->cursg_ofs == sg_dma_len(sg)) {
+ if (qc->cursg_ofs == sg->length) {
qc->cursg++;
qc->cursg_ofs = 0;
}
@@ -2401,7 +2639,7 @@ next_page:
kunmap(page);
if (bytes) {
- if (qc->cursg_ofs < sg_dma_len(sg))
+ if (qc->cursg_ofs < sg->length)
goto next_page;
goto next_sg;
}
@@ -2444,6 +2682,7 @@ err_out:
* @ap:
*
* LOCKING:
+ * None. (executing in kernel thread context)
*/
static void ata_pio_block(struct ata_port *ap)
@@ -2569,7 +2808,7 @@ static void atapi_request_sense(struct ata_port *ap, struct ata_device *dev,
ata_sg_init_one(qc, cmd->sense_buffer, sizeof(cmd->sense_buffer));
qc->dma_dir = DMA_FROM_DEVICE;
- memset(&qc->cdb, 0, sizeof(ap->cdb_len));
+ memset(&qc->cdb, 0, ap->cdb_len);
qc->cdb[0] = REQUEST_SENSE;
qc->cdb[4] = SCSI_SENSE_BUFFERSIZE;
@@ -2612,6 +2851,7 @@ static void atapi_request_sense(struct ata_port *ap, struct ata_device *dev,
* transaction completed successfully.
*
* LOCKING:
+ * Inherited from SCSI layer (none, can sleep)
*/
static void ata_qc_timeout(struct ata_queued_cmd *qc)
@@ -2721,6 +2961,7 @@ out:
* @dev: Device from whom we request an available command structure
*
* LOCKING:
+ * None.
*/
static struct ata_queued_cmd *ata_qc_new(struct ata_port *ap)
@@ -2746,6 +2987,7 @@ static struct ata_queued_cmd *ata_qc_new(struct ata_port *ap)
* @dev: Device from whom we request an available command structure
*
* LOCKING:
+ * None.
*/
struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
@@ -2810,6 +3052,7 @@ static void __ata_qc_complete(struct ata_queued_cmd *qc)
* in case something prevents using it.
*
* LOCKING:
+ * spin_lock_irqsave(host_set lock)
*
*/
void ata_qc_free(struct ata_queued_cmd *qc)
@@ -2823,9 +3066,13 @@ void ata_qc_free(struct ata_queued_cmd *qc)
/**
* ata_qc_complete - Complete an active ATA command
* @qc: Command to complete
- * @drv_stat: ATA status register contents
+ * @drv_stat: ATA Status register contents
+ *
+ * Indicate to the mid and upper layers that an ATA
+ * command has completed, with either an ok or not-ok status.
*
* LOCKING:
+ * spin_lock_irqsave(host_set lock)
*
*/
@@ -2841,6 +3088,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat)
/* call completion callback */
rc = qc->complete_fn(qc, drv_stat);
+ qc->flags &= ~ATA_QCFLAG_ACTIVE;
/* if callback indicates not to complete command (non-zero),
* return immediately
@@ -2920,6 +3168,7 @@ err_out:
return -1;
}
+
/**
* ata_qc_issue_prot - issue taskfile to device in proto-dependent manner
* @qc: command to issue to device
@@ -2929,6 +3178,8 @@ err_out:
* classes called "protocols", and issuing each type of protocol
* is slightly different.
*
+ * May be used as the qc_issue() entry in ata_port_operations.
+ *
* LOCKING:
* spin_lock_irqsave(host_set lock)
*
@@ -2986,7 +3237,7 @@ int ata_qc_issue_prot(struct ata_queued_cmd *qc)
}
/**
- * ata_bmdma_setup - Set up PCI IDE BMDMA transaction
+ * ata_bmdma_setup_mmio - Set up PCI IDE BMDMA transaction
* @qc: Info associated with this ATA transaction.
*
* LOCKING:
@@ -3093,6 +3344,18 @@ static void ata_bmdma_start_pio (struct ata_queued_cmd *qc)
ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
}
+
+/**
+ * ata_bmdma_start - Start a PCI IDE BMDMA transaction
+ * @qc: Info associated with this ATA transaction.
+ *
+ * Writes the ATA_DMA_START flag to the DMA command register.
+ *
+ * May be used as the bmdma_start() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
void ata_bmdma_start(struct ata_queued_cmd *qc)
{
if (qc->ap->flags & ATA_FLAG_MMIO)
@@ -3101,6 +3364,20 @@ void ata_bmdma_start(struct ata_queued_cmd *qc)
ata_bmdma_start_pio(qc);
}
+
+/**
+ * ata_bmdma_setup - Set up PCI IDE BMDMA transaction
+ * @qc: Info associated with this ATA transaction.
+ *
+ * Writes address of PRD table to device's PRD Table Address
+ * register, sets the DMA control register, and calls
+ * ops->exec_command() to start the transfer.
+ *
+ * May be used as the bmdma_setup() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
void ata_bmdma_setup(struct ata_queued_cmd *qc)
{
if (qc->ap->flags & ATA_FLAG_MMIO)
@@ -3109,6 +3386,19 @@ void ata_bmdma_setup(struct ata_queued_cmd *qc)
ata_bmdma_setup_pio(qc);
}
+
+/**
+ * ata_bmdma_irq_clear - Clear PCI IDE BMDMA interrupt.
+ * @ap: Port associated with this ATA transaction.
+ *
+ * Clear interrupt and error flags in DMA status register.
+ *
+ * May be used as the irq_clear() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
+
void ata_bmdma_irq_clear(struct ata_port *ap)
{
if (ap->flags & ATA_FLAG_MMIO) {
@@ -3121,6 +3411,19 @@ void ata_bmdma_irq_clear(struct ata_port *ap)
}
+
+/**
+ * ata_bmdma_status - Read PCI IDE BMDMA status
+ * @ap: Port associated with this ATA transaction.
+ *
+ * Read and return BMDMA status register.
+ *
+ * May be used as the bmdma_status() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
+
u8 ata_bmdma_status(struct ata_port *ap)
{
u8 host_stat;
@@ -3132,6 +3435,19 @@ u8 ata_bmdma_status(struct ata_port *ap)
return host_stat;
}
+
+/**
+ * ata_bmdma_stop - Stop PCI IDE BMDMA transfer
+ * @ap: Port associated with this ATA transaction.
+ *
+ * Clears the ATA_DMA_START flag in the dma control register
+ *
+ * May be used as the bmdma_stop() entry in ata_port_operations.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
+
void ata_bmdma_stop(struct ata_port *ap)
{
if (ap->flags & ATA_FLAG_MMIO) {
@@ -3231,13 +3547,18 @@ idle_irq:
/**
* ata_interrupt - Default ATA host interrupt handler
- * @irq: irq line
- * @dev_instance: pointer to our host information structure
+ * @irq: irq line (unused)
+ * @dev_instance: pointer to our ata_host_set information structure
* @regs: unused
*
+ * Default interrupt handler for PCI IDE devices. Calls
+ * ata_host_intr() for each port that is not disabled.
+ *
* LOCKING:
+ * Obtains host_set lock during operation.
*
* RETURNS:
+ * IRQ_NONE or IRQ_HANDLED.
*
*/
@@ -3259,7 +3580,8 @@ irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs)
struct ata_queued_cmd *qc;
qc = ata_qc_from_tag(ap, ap->active_tag);
- if (qc && (!(qc->tf.ctl & ATA_NIEN)))
+ if (qc && (!(qc->tf.ctl & ATA_NIEN)) &&
+ (qc->flags & ATA_QCFLAG_ACTIVE))
handled |= ata_host_intr(ap, qc);
}
}
@@ -3329,6 +3651,19 @@ err_out:
ata_qc_complete(qc, ATA_ERR);
}
+
+/**
+ * ata_port_start - Set port up for dma.
+ * @ap: Port to initialize
+ *
+ * Called just after data structures for each port are
+ * initialized. Allocates space for PRD table.
+ *
+ * May be used as the port_start() entry in ata_port_operations.
+ *
+ * LOCKING:
+ */
+
int ata_port_start (struct ata_port *ap)
{
struct device *dev = ap->host_set->dev;
@@ -3342,6 +3677,18 @@ int ata_port_start (struct ata_port *ap)
return 0;
}
+
+/**
+ * ata_port_stop - Undo ata_port_start()
+ * @ap: Port to shut down
+ *
+ * Frees the PRD table.
+ *
+ * May be used as the port_stop() entry in ata_port_operations.
+ *
+ * LOCKING:
+ */
+
void ata_port_stop (struct ata_port *ap)
{
struct device *dev = ap->host_set->dev;
@@ -3349,6 +3696,13 @@ void ata_port_stop (struct ata_port *ap)
dma_free_coherent(dev, ATA_PRD_TBL_SZ, ap->prd, ap->prd_dma);
}
+void ata_host_stop (struct ata_host_set *host_set)
+{
+ if (host_set->mmio_base)
+ iounmap(host_set->mmio_base);
+}
+
+
/**
* ata_host_remove - Unregister SCSI host structure with upper layers
* @ap: Port to unregister
@@ -3377,7 +3731,11 @@ static void ata_host_remove(struct ata_port *ap, unsigned int do_unregister)
* @ent: Probe information provided by low-level driver
* @port_no: Port number associated with this ata_port
*
+ * Initialize a new ata_port structure, and its associated
+ * scsi_host.
+ *
* LOCKING:
+ * Inherited from caller.
*
*/
@@ -3432,9 +3790,13 @@ static void ata_host_init(struct ata_port *ap, struct Scsi_Host *host,
* @host_set: Collections of ports to which we add
* @port_no: Port number associated with this host
*
+ * Attach low-level ATA driver to system.
+ *
* LOCKING:
+ * PCI/etc. bus probe sem.
*
* RETURNS:
+ * New ata_port on success, for NULL on error.
*
*/
@@ -3467,12 +3829,22 @@ err_out:
}
/**
- * ata_device_add -
- * @ent:
+ * ata_device_add - Register hardware device with ATA and SCSI layers
+ * @ent: Probe information describing hardware device to be registered
+ *
+ * This function processes the information provided in the probe
+ * information struct @ent, allocates the necessary ATA and SCSI
+ * host information structures, initializes them, and registers
+ * everything with requisite kernel subsystems.
+ *
+ * This function requests irqs, probes the ATA bus, and probes
+ * the SCSI bus.
*
* LOCKING:
+ * PCI/etc. bus probe sem.
*
* RETURNS:
+ * Number of ports registered. Zero on error (no ports registered).
*
*/
@@ -3624,7 +3996,15 @@ int ata_scsi_release(struct Scsi_Host *host)
/**
* ata_std_ports - initialize ioaddr with standard port offsets.
* @ioaddr: IO address structure to be initialized
+ *
+ * Utility function which initializes data_addr, error_addr,
+ * feature_addr, nsect_addr, lbal_addr, lbam_addr, lbah_addr,
+ * device_addr, status_addr, and command_addr to standard offsets
+ * relative to cmd_addr.
+ *
+ * Does not set ctl_addr, altstatus_addr, bmdma_addr, or scr_addr.
*/
+
void ata_std_ports(struct ata_ioports *ioaddr)
{
ioaddr->data_addr = ioaddr->cmd_addr + ATA_REG_DATA;
@@ -3666,6 +4046,20 @@ ata_probe_ent_alloc(struct device *dev, struct ata_port_info *port)
return probe_ent;
}
+
+
+/**
+ * ata_pci_init_native_mode - Initialize native-mode driver
+ * @pdev: pci device to be initialized
+ * @port: array[2] of pointers to port info structures.
+ *
+ * Utility function which allocates and initializes an
+ * ata_probe_ent structure for a standard dual-port
+ * PIO-based IDE controller. The returned ata_probe_ent
+ * structure can be passed to ata_device_add(). The returned
+ * ata_probe_ent structure should then be freed with kfree().
+ */
+
#ifdef CONFIG_PCI
struct ata_probe_ent *
ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port)
@@ -3747,10 +4141,19 @@ ata_pci_init_legacy_mode(struct pci_dev *pdev, struct ata_port_info **port,
* @port_info: Information from low-level host driver
* @n_ports: Number of ports attached to host controller
*
+ * This is a helper function which can be called from a driver's
+ * xxx_init_one() probe function if the hardware uses traditional
+ * IDE taskfile registers.
+ *
+ * This function calls pci_enable_device(), reserves its register
+ * regions, sets the dma mask, enables bus master mode, and calls
+ * ata_device_add()
+ *
* LOCKING:
* Inherited from PCI layer (may sleep).
*
* RETURNS:
+ * Zero on success, negative on errno-based value on error.
*
*/
@@ -3905,10 +4308,6 @@ void ata_pci_remove_one (struct pci_dev *pdev)
}
free_irq(host_set->irq, host_set);
- if (host_set->ops->host_stop)
- host_set->ops->host_stop(host_set);
- if (host_set->mmio_base)
- iounmap(host_set->mmio_base);
for (i = 0; i < host_set->n_ports; i++) {
ap = host_set->ports[i];
@@ -3927,6 +4326,9 @@ void ata_pci_remove_one (struct pci_dev *pdev)
scsi_host_put(ap->host);
}
+ if (host_set->ops->host_stop)
+ host_set->ops->host_stop(host_set);
+
kfree(host_set);
pci_release_regions(pdev);
@@ -3970,15 +4372,6 @@ int pci_test_config_bits(struct pci_dev *pdev, struct pci_bits *bits)
#endif /* CONFIG_PCI */
-/**
- * ata_init -
- *
- * LOCKING:
- *
- * RETURNS:
- *
- */
-
static int __init ata_init(void)
{
ata_wq = create_workqueue("ata");
@@ -4024,6 +4417,7 @@ EXPORT_SYMBOL_GPL(ata_chk_err);
EXPORT_SYMBOL_GPL(ata_exec_command);
EXPORT_SYMBOL_GPL(ata_port_start);
EXPORT_SYMBOL_GPL(ata_port_stop);
+EXPORT_SYMBOL_GPL(ata_host_stop);
EXPORT_SYMBOL_GPL(ata_interrupt);
EXPORT_SYMBOL_GPL(ata_qc_prep);
EXPORT_SYMBOL_GPL(ata_bmdma_setup);
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 4c96df060c3..7a4adc4c8f0 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -347,7 +347,10 @@ int ata_scsi_slave_config(struct scsi_device *sdev)
*/
if ((dev->flags & ATA_DFLAG_LBA48) &&
((dev->flags & ATA_DFLAG_LOCK_SECTORS) == 0)) {
- sdev->host->max_sectors = 2048;
+ /*
+ * do not overwrite sdev->host->max_sectors, since
+ * other drives on this host may not support LBA48
+ */
blk_queue_max_sectors(sdev->request_queue, 2048);
}
}
@@ -944,7 +947,7 @@ unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf,
}
/**
- * ata_scsiop_noop -
+ * ata_scsiop_noop - Command handler that simply returns success.
* @args: device IDENTIFY data / SCSI command of interest.
* @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
* @buflen: Response buffer length.
diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h
index 6518226b8f8..d90430bbb0d 100644
--- a/drivers/scsi/libata.h
+++ b/drivers/scsi/libata.h
@@ -26,7 +26,7 @@
#define __LIBATA_H__
#define DRV_NAME "libata"
-#define DRV_VERSION "1.10" /* must be exactly four chars */
+#define DRV_VERSION "1.11" /* must be exactly four chars */
struct ata_scsi_args {
u16 *id;
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 579448222d6..3c97aa45772 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -507,6 +507,7 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
int ret, i;
unsigned int id, lun;
unsigned long serial;
+ unsigned long flags;
if (!CMD_SP(cmd))
return FAILED;
@@ -519,7 +520,7 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
/* Check active list for command command. */
spin_unlock_irq(ha->host->host_lock);
- spin_lock(&ha->hardware_lock);
+ spin_lock_irqsave(&ha->hardware_lock, flags);
for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
sp = ha->outstanding_cmds[i];
@@ -534,7 +535,7 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
sp->state));
DEBUG3(qla2x00_print_scsi_cmd(cmd);)
- spin_unlock(&ha->hardware_lock);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (qla2x00_abort_command(ha, sp)) {
DEBUG2(printk("%s(%ld): abort_command "
"mbx failed.\n", __func__, ha->host_no));
@@ -543,20 +544,19 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
"mbx success.\n", __func__, ha->host_no));
ret = SUCCESS;
}
- spin_lock(&ha->hardware_lock);
+ spin_lock_irqsave(&ha->hardware_lock, flags);
break;
}
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
/* Wait for the command to be returned. */
if (ret == SUCCESS) {
- spin_unlock(&ha->hardware_lock);
if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
qla_printk(KERN_ERR, ha,
"scsi(%ld:%d:%d): Abort handler timed out -- %lx "
"%x.\n", ha->host_no, id, lun, serial, ret);
}
- spin_lock(&ha->hardware_lock);
}
spin_lock_irq(ha->host->host_lock);
@@ -588,6 +588,7 @@ qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
int status;
srb_t *sp;
struct scsi_cmnd *cmd;
+ unsigned long flags;
status = 0;
@@ -596,11 +597,11 @@ qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
* array
*/
for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
- spin_lock(&ha->hardware_lock);
+ spin_lock_irqsave(&ha->hardware_lock, flags);
sp = ha->outstanding_cmds[cnt];
if (sp) {
cmd = sp->cmd;
- spin_unlock(&ha->hardware_lock);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (cmd->device->id == t) {
if (!qla2x00_eh_wait_on_command(ha, cmd)) {
status = 1;
@@ -608,7 +609,7 @@ qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
}
}
} else {
- spin_unlock(&ha->hardware_lock);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
}
return (status);
@@ -740,6 +741,7 @@ qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
int status;
srb_t *sp;
struct scsi_cmnd *cmd;
+ unsigned long flags;
status = 1;
@@ -748,17 +750,17 @@ qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
* array
*/
for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
- spin_lock(&ha->hardware_lock);
+ spin_lock_irqsave(&ha->hardware_lock, flags);
sp = ha->outstanding_cmds[cnt];
if (sp) {
cmd = sp->cmd;
- spin_unlock(&ha->hardware_lock);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
status = qla2x00_eh_wait_on_command(ha, cmd);
if (status == 0)
break;
}
else {
- spin_unlock(&ha->hardware_lock);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
}
return (status);
diff --git a/drivers/scsi/sata_nv.c b/drivers/scsi/sata_nv.c
index 69009f853a4..b0403ccd8a2 100644
--- a/drivers/scsi/sata_nv.c
+++ b/drivers/scsi/sata_nv.c
@@ -329,6 +329,8 @@ static void nv_host_stop (struct ata_host_set *host_set)
host->host_desc->disable_hotplug(host_set);
kfree(host);
+
+ ata_host_stop(host_set);
}
static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
diff --git a/drivers/scsi/sata_promise.c b/drivers/scsi/sata_promise.c
index 19a13e3590f..b18c90582e6 100644
--- a/drivers/scsi/sata_promise.c
+++ b/drivers/scsi/sata_promise.c
@@ -122,6 +122,7 @@ static struct ata_port_operations pdc_ata_ops = {
.scr_write = pdc_sata_scr_write,
.port_start = pdc_port_start,
.port_stop = pdc_port_stop,
+ .host_stop = ata_host_stop,
};
static struct ata_port_info pdc_port_info[] = {
@@ -151,6 +152,8 @@ static struct ata_port_info pdc_port_info[] = {
static struct pci_device_id pdc_ata_pci_tbl[] = {
{ PCI_VENDOR_ID_PROMISE, 0x3371, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
board_2037x },
+ { PCI_VENDOR_ID_PROMISE, 0x3571, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ board_2037x },
{ PCI_VENDOR_ID_PROMISE, 0x3373, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
board_2037x },
{ PCI_VENDOR_ID_PROMISE, 0x3375, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
diff --git a/drivers/scsi/sata_qstor.c b/drivers/scsi/sata_qstor.c
index dfd36210471..1383e8a28d7 100644
--- a/drivers/scsi/sata_qstor.c
+++ b/drivers/scsi/sata_qstor.c
@@ -536,6 +536,8 @@ static void qs_host_stop(struct ata_host_set *host_set)
writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */
writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */
+
+ ata_host_stop(host_set);
}
static void qs_host_init(unsigned int chip_id, struct ata_probe_ent *pe)
diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c
index f0489dc302a..238580d244e 100644
--- a/drivers/scsi/sata_sil.c
+++ b/drivers/scsi/sata_sil.c
@@ -82,6 +82,7 @@ static struct pci_device_id sil_pci_tbl[] = {
{ 0x1095, 0x3114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3114 },
{ 0x1002, 0x436e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
{ 0x1002, 0x4379, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
+ { 0x1002, 0x437a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
{ } /* terminate list */
};
@@ -160,6 +161,7 @@ static struct ata_port_operations sil_ops = {
.scr_write = sil_scr_write,
.port_start = ata_port_start,
.port_stop = ata_port_stop,
+ .host_stop = ata_host_stop,
};
static struct ata_port_info sil_port_info[] = {
diff --git a/drivers/scsi/sata_sis.c b/drivers/scsi/sata_sis.c
index 5105ddd0844..e418b89c6b9 100644
--- a/drivers/scsi/sata_sis.c
+++ b/drivers/scsi/sata_sis.c
@@ -114,6 +114,7 @@ static struct ata_port_operations sis_ops = {
.scr_write = sis_scr_write,
.port_start = ata_port_start,
.port_stop = ata_port_stop,
+ .host_stop = ata_host_stop,
};
static struct ata_port_info sis_port_info = {
diff --git a/drivers/scsi/sata_svw.c b/drivers/scsi/sata_svw.c
index 8d1a5d25c05..edef1fa969f 100644
--- a/drivers/scsi/sata_svw.c
+++ b/drivers/scsi/sata_svw.c
@@ -313,6 +313,7 @@ static struct ata_port_operations k2_sata_ops = {
.scr_write = k2_sata_scr_write,
.port_start = ata_port_start,
.port_stop = ata_port_stop,
+ .host_stop = ata_host_stop,
};
static void k2_sata_setup_port(struct ata_ioports *port, unsigned long base)
@@ -395,7 +396,7 @@ static int k2_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *e
/* Clear a magic bit in SCR1 according to Darwin, those help
* some funky seagate drives (though so far, those were already
- * set by the firmware on the machines I had access to
+ * set by the firmware on the machines I had access to)
*/
writel(readl(mmio_base + K2_SATA_SICR1_OFFSET) & ~0x00040000,
mmio_base + K2_SATA_SICR1_OFFSET);
diff --git a/drivers/scsi/sata_sx4.c b/drivers/scsi/sata_sx4.c
index 70118650c46..140cea05de3 100644
--- a/drivers/scsi/sata_sx4.c
+++ b/drivers/scsi/sata_sx4.c
@@ -245,6 +245,8 @@ static void pdc20621_host_stop(struct ata_host_set *host_set)
iounmap(dimm_mmio);
kfree(hpriv);
+
+ ata_host_stop(host_set);
}
static int pdc_port_start(struct ata_port *ap)
diff --git a/drivers/scsi/sata_uli.c b/drivers/scsi/sata_uli.c
index 0bff4f475f2..a71fb54eebd 100644
--- a/drivers/scsi/sata_uli.c
+++ b/drivers/scsi/sata_uli.c
@@ -113,6 +113,7 @@ static struct ata_port_operations uli_ops = {
.port_start = ata_port_start,
.port_stop = ata_port_stop,
+ .host_stop = ata_host_stop,
};
static struct ata_port_info uli_port_info = {
diff --git a/drivers/scsi/sata_via.c b/drivers/scsi/sata_via.c
index 3a783066727..f43183c19a1 100644
--- a/drivers/scsi/sata_via.c
+++ b/drivers/scsi/sata_via.c
@@ -134,6 +134,7 @@ static struct ata_port_operations svia_sata_ops = {
.port_start = ata_port_start,
.port_stop = ata_port_stop,
+ .host_stop = ata_host_stop,
};
static struct ata_port_info svia_port_info = {
diff --git a/drivers/scsi/sata_vsc.c b/drivers/scsi/sata_vsc.c
index 2c28f0ad73c..c5e09dc6f3d 100644
--- a/drivers/scsi/sata_vsc.c
+++ b/drivers/scsi/sata_vsc.c
@@ -21,6 +21,7 @@
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
#include "scsi.h"
#include <scsi/scsi_host.h>
#include <linux/libata.h>
@@ -230,6 +231,7 @@ static struct ata_port_operations vsc_sata_ops = {
.scr_write = vsc_sata_scr_write,
.port_start = ata_port_start,
.port_stop = ata_port_stop,
+ .host_stop = ata_host_stop,
};
static void __devinit vsc_sata_setup_port(struct ata_ioports *port, unsigned long base)
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index cca772624ae..8d0d302844a 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -1197,6 +1197,7 @@ struct scsi_device *__scsi_add_device(struct Scsi_Host *shost, uint channel,
if (!starget)
return ERR_PTR(-ENOMEM);
+ get_device(&starget->dev);
down(&shost->scan_mutex);
res = scsi_probe_and_add_lun(starget, lun, NULL, &sdev, 1, hostdata);
if (res != SCSI_SCAN_LUN_PRESENT)
diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c
index 28966d05435..67c6cc40ce1 100644
--- a/drivers/scsi/scsi_transport_spi.c
+++ b/drivers/scsi/scsi_transport_spi.c
@@ -35,7 +35,7 @@
#define SPI_PRINTK(x, l, f, a...) dev_printk(l, &(x)->dev, f , ##a)
-#define SPI_NUM_ATTRS 10 /* increase this if you add attributes */
+#define SPI_NUM_ATTRS 13 /* increase this if you add attributes */
#define SPI_OTHER_ATTRS 1 /* Increase this if you add "always
* on" attributes */
#define SPI_HOST_ATTRS 1
@@ -219,8 +219,11 @@ static int spi_setup_transport_attrs(struct device *dev)
struct scsi_target *starget = to_scsi_target(dev);
spi_period(starget) = -1; /* illegal value */
+ spi_min_period(starget) = 0;
spi_offset(starget) = 0; /* async */
+ spi_max_offset(starget) = 255;
spi_width(starget) = 0; /* narrow */
+ spi_max_width(starget) = 1;
spi_iu(starget) = 0; /* no IU */
spi_dt(starget) = 0; /* ST */
spi_qas(starget) = 0;
@@ -235,6 +238,34 @@ static int spi_setup_transport_attrs(struct device *dev)
return 0;
}
+#define spi_transport_show_simple(field, format_string) \
+ \
+static ssize_t \
+show_spi_transport_##field(struct class_device *cdev, char *buf) \
+{ \
+ struct scsi_target *starget = transport_class_to_starget(cdev); \
+ struct spi_transport_attrs *tp; \
+ \
+ tp = (struct spi_transport_attrs *)&starget->starget_data; \
+ return snprintf(buf, 20, format_string, tp->field); \
+}
+
+#define spi_transport_store_simple(field, format_string) \
+ \
+static ssize_t \
+store_spi_transport_##field(struct class_device *cdev, const char *buf, \
+ size_t count) \
+{ \
+ int val; \
+ struct scsi_target *starget = transport_class_to_starget(cdev); \
+ struct spi_transport_attrs *tp; \
+ \
+ tp = (struct spi_transport_attrs *)&starget->starget_data; \
+ val = simple_strtoul(buf, NULL, 0); \
+ tp->field = val; \
+ return count; \
+}
+
#define spi_transport_show_function(field, format_string) \
\
static ssize_t \
@@ -261,6 +292,25 @@ store_spi_transport_##field(struct class_device *cdev, const char *buf, \
struct spi_internal *i = to_spi_internal(shost->transportt); \
\
val = simple_strtoul(buf, NULL, 0); \
+ i->f->set_##field(starget, val); \
+ return count; \
+}
+
+#define spi_transport_store_max(field, format_string) \
+static ssize_t \
+store_spi_transport_##field(struct class_device *cdev, const char *buf, \
+ size_t count) \
+{ \
+ int val; \
+ struct scsi_target *starget = transport_class_to_starget(cdev); \
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \
+ struct spi_internal *i = to_spi_internal(shost->transportt); \
+ struct spi_transport_attrs *tp \
+ = (struct spi_transport_attrs *)&starget->starget_data; \
+ \
+ val = simple_strtoul(buf, NULL, 0); \
+ if (val > tp->max_##field) \
+ val = tp->max_##field; \
i->f->set_##field(starget, val); \
return count; \
}
@@ -272,9 +322,24 @@ static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR, \
show_spi_transport_##field, \
store_spi_transport_##field);
+#define spi_transport_simple_attr(field, format_string) \
+ spi_transport_show_simple(field, format_string) \
+ spi_transport_store_simple(field, format_string) \
+static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR, \
+ show_spi_transport_##field, \
+ store_spi_transport_##field);
+
+#define spi_transport_max_attr(field, format_string) \
+ spi_transport_show_function(field, format_string) \
+ spi_transport_store_max(field, format_string) \
+ spi_transport_simple_attr(max_##field, format_string) \
+static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR, \
+ show_spi_transport_##field, \
+ store_spi_transport_##field);
+
/* The Parallel SCSI Tranport Attributes: */
-spi_transport_rd_attr(offset, "%d\n");
-spi_transport_rd_attr(width, "%d\n");
+spi_transport_max_attr(offset, "%d\n");
+spi_transport_max_attr(width, "%d\n");
spi_transport_rd_attr(iu, "%d\n");
spi_transport_rd_attr(dt, "%d\n");
spi_transport_rd_attr(qas, "%d\n");
@@ -300,26 +365,18 @@ static CLASS_DEVICE_ATTR(revalidate, S_IWUSR, NULL, store_spi_revalidate);
/* Translate the period into ns according to the current spec
* for SDTR/PPR messages */
-static ssize_t show_spi_transport_period(struct class_device *cdev, char *buf)
-
+static ssize_t
+show_spi_transport_period_helper(struct class_device *cdev, char *buf,
+ int period)
{
- struct scsi_target *starget = transport_class_to_starget(cdev);
- struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
- struct spi_transport_attrs *tp;
int len, picosec;
- struct spi_internal *i = to_spi_internal(shost->transportt);
-
- tp = (struct spi_transport_attrs *)&starget->starget_data;
-
- if (i->f->get_period)
- i->f->get_period(starget);
- if (tp->period < 0 || tp->period > 0xff) {
+ if (period < 0 || period > 0xff) {
picosec = -1;
- } else if (tp->period <= SPI_STATIC_PPR) {
- picosec = ppr_to_ps[tp->period];
+ } else if (period <= SPI_STATIC_PPR) {
+ picosec = ppr_to_ps[period];
} else {
- picosec = tp->period * 4000;
+ picosec = period * 4000;
}
if (picosec == -1) {
@@ -334,12 +391,9 @@ static ssize_t show_spi_transport_period(struct class_device *cdev, char *buf)
}
static ssize_t
-store_spi_transport_period(struct class_device *cdev, const char *buf,
- size_t count)
+store_spi_transport_period_helper(struct class_device *cdev, const char *buf,
+ size_t count, int *periodp)
{
- struct scsi_target *starget = transport_class_to_starget(cdev);
- struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
- struct spi_internal *i = to_spi_internal(shost->transportt);
int j, picosec, period = -1;
char *endp;
@@ -368,15 +422,79 @@ store_spi_transport_period(struct class_device *cdev, const char *buf,
if (period > 0xff)
period = 0xff;
- i->f->set_period(starget, period);
+ *periodp = period;
return count;
}
+static ssize_t
+show_spi_transport_period(struct class_device *cdev, char *buf)
+{
+ struct scsi_target *starget = transport_class_to_starget(cdev);
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct spi_internal *i = to_spi_internal(shost->transportt);
+ struct spi_transport_attrs *tp =
+ (struct spi_transport_attrs *)&starget->starget_data;
+
+ if (i->f->get_period)
+ i->f->get_period(starget);
+
+ return show_spi_transport_period_helper(cdev, buf, tp->period);
+}
+
+static ssize_t
+store_spi_transport_period(struct class_device *cdev, const char *buf,
+ size_t count)
+{
+ struct scsi_target *starget = transport_class_to_starget(cdev);
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct spi_internal *i = to_spi_internal(shost->transportt);
+ struct spi_transport_attrs *tp =
+ (struct spi_transport_attrs *)&starget->starget_data;
+ int period, retval;
+
+ retval = store_spi_transport_period_helper(cdev, buf, count, &period);
+
+ if (period < tp->min_period)
+ period = tp->min_period;
+
+ i->f->set_period(starget, period);
+
+ return retval;
+}
+
static CLASS_DEVICE_ATTR(period, S_IRUGO | S_IWUSR,
show_spi_transport_period,
store_spi_transport_period);
+static ssize_t
+show_spi_transport_min_period(struct class_device *cdev, char *buf)
+{
+ struct scsi_target *starget = transport_class_to_starget(cdev);
+ struct spi_transport_attrs *tp =
+ (struct spi_transport_attrs *)&starget->starget_data;
+
+ return show_spi_transport_period_helper(cdev, buf, tp->min_period);
+}
+
+static ssize_t
+store_spi_transport_min_period(struct class_device *cdev, const char *buf,
+ size_t count)
+{
+ struct scsi_target *starget = transport_class_to_starget(cdev);
+ struct spi_transport_attrs *tp =
+ (struct spi_transport_attrs *)&starget->starget_data;
+
+ return store_spi_transport_period_helper(cdev, buf, count,
+ &tp->min_period);
+}
+
+
+static CLASS_DEVICE_ATTR(min_period, S_IRUGO | S_IWUSR,
+ show_spi_transport_min_period,
+ store_spi_transport_min_period);
+
+
static ssize_t show_spi_host_signalling(struct class_device *cdev, char *buf)
{
struct Scsi_Host *shost = transport_class_to_shost(cdev);
@@ -642,6 +760,7 @@ spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
{
struct spi_internal *i = to_spi_internal(sreq->sr_host->transportt);
struct scsi_device *sdev = sreq->sr_device;
+ struct scsi_target *starget = sdev->sdev_target;
int len = sdev->inquiry_len;
/* first set us up for narrow async */
DV_SET(offset, 0);
@@ -655,9 +774,11 @@ spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
}
/* test width */
- if (i->f->set_width && sdev->wdtr) {
+ if (i->f->set_width && spi_max_width(starget) && sdev->wdtr) {
i->f->set_width(sdev->sdev_target, 1);
+ printk("WIDTH IS %d\n", spi_max_width(starget));
+
if (spi_dv_device_compare_inquiry(sreq, buffer,
buffer + len,
DV_LOOPS)
@@ -684,8 +805,8 @@ spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
retry:
/* now set up to the maximum */
- DV_SET(offset, 255);
- DV_SET(period, 1);
+ DV_SET(offset, spi_max_offset(starget));
+ DV_SET(period, spi_min_period(starget));
if (len == 0) {
SPI_PRINTK(sdev->sdev_target, KERN_INFO, "Domain Validation skipping write tests\n");
@@ -892,6 +1013,16 @@ EXPORT_SYMBOL(spi_display_xfer_agreement);
if (i->f->show_##field) \
count++
+#define SETUP_RELATED_ATTRIBUTE(field, rel_field) \
+ i->private_attrs[count] = class_device_attr_##field; \
+ if (!i->f->set_##rel_field) { \
+ i->private_attrs[count].attr.mode = S_IRUGO; \
+ i->private_attrs[count].store = NULL; \
+ } \
+ i->attrs[count] = &i->private_attrs[count]; \
+ if (i->f->show_##rel_field) \
+ count++
+
#define SETUP_HOST_ATTRIBUTE(field) \
i->private_host_attrs[count] = class_device_attr_##field; \
if (!i->f->set_##field) { \
@@ -975,8 +1106,11 @@ spi_attach_transport(struct spi_function_template *ft)
i->f = ft;
SETUP_ATTRIBUTE(period);
+ SETUP_RELATED_ATTRIBUTE(min_period, period);
SETUP_ATTRIBUTE(offset);
+ SETUP_RELATED_ATTRIBUTE(max_offset, offset);
SETUP_ATTRIBUTE(width);
+ SETUP_RELATED_ATTRIBUTE(max_width, width);
SETUP_ATTRIBUTE(iu);
SETUP_ATTRIBUTE(dt);
SETUP_ATTRIBUTE(qas);