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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-08 10:04:20 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-08 10:04:20 -0800
commit21eb4fa1700112d1420d72e1de708af671a251c8 (patch)
tree3afd9f526da50108c27e05ac69826be5e7c2ad6e /drivers/char
parent0c0e8caf9fd6c9a49fb9fbdba14a8b7b4239adde (diff)
parentd003e7a1a569501cbe9a5ca14748177498c4893a (diff)
Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc
* master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc: (116 commits) [POWERPC] Add export of vgacon_remap_base [POWERPC] Remove bogus comment about page_is_ram [POWERPC] windfarm: don't die on suspend thread signal [POWERPC] Fix comment in kernel/irq.c [POWERPC] ppc: Fix booke watchdog initialization [POWERPC] PPC: Use ARRAY_SIZE macro when appropriate [POWERPC] Use ARRAY_SIZE macro when appropriate [POWERPC] Fix ppc64's writing to struct file_operations [POWERPC] ppc: use syslog macro for the printk log level [POWERPC] ppc: cs4218_tdm remove extra brace [POWERPC] Add mpc52xx/lite5200 PCI support [POWERPC] Only use H_BULK_REMOVE if the firmware supports it [POWERPC] Fixup error handling when emulating a floating point instruction [POWERPC] Enable interrupts if we are doing fp math emulation [POWERPC] Added kprobes support to ppc32 [POWERPC] Make pSeries use the H_BULK_REMOVE hypervisor call [POWERPC] Clear RI bit in MSR before restoring r13 when returning to userspace [POWERPC] Fix performance monitor exception [POWERPC] Compile fixes for arch/powerpc dcr code [POWERPC] Maple: use mmio nvram ...
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/Kconfig7
-rw-r--r--drivers/char/Makefile1
-rw-r--r--drivers/char/hvc_beat.c134
-rw-r--r--drivers/char/watchdog/booke_wdt.c20
4 files changed, 153 insertions, 9 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 9e43e39dc35..d08bb4ee130 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -610,6 +610,13 @@ config HVC_RTAS
help
IBM Console device driver which makes use of RTAS
+config HVC_BEAT
+ bool "Toshiba's Beat Hypervisor Console support"
+ depends on PPC_CELLEB
+ select HVC_DRIVER
+ help
+ Toshiba's Cell Reference Set Beat Console device driver
+
config HVCS
tristate "IBM Hypervisor Virtual Console Server support"
depends on PPC_PSERIES
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index fc110637ced..0326ca1a848 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -45,6 +45,7 @@ obj-$(CONFIG_RIO) += rio/ generic_serial.o
obj-$(CONFIG_HVC_CONSOLE) += hvc_vio.o hvsi.o
obj-$(CONFIG_HVC_ISERIES) += hvc_iseries.o
obj-$(CONFIG_HVC_RTAS) += hvc_rtas.o
+obj-$(CONFIG_HVC_BEAT) += hvc_beat.o
obj-$(CONFIG_HVC_DRIVER) += hvc_console.o
obj-$(CONFIG_RAW_DRIVER) += raw.o
obj-$(CONFIG_SGI_SNSC) += snsc.o snsc_event.o
diff --git a/drivers/char/hvc_beat.c b/drivers/char/hvc_beat.c
new file mode 100644
index 00000000000..6f019f19be7
--- /dev/null
+++ b/drivers/char/hvc_beat.c
@@ -0,0 +1,134 @@
+/*
+ * Beat hypervisor console driver
+ *
+ * (C) Copyright 2006 TOSHIBA CORPORATION
+ *
+ * This code is based on drivers/char/hvc_rtas.c:
+ * (C) Copyright IBM Corporation 2001-2005
+ * (C) Copyright Red Hat, Inc. 2005
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/string.h>
+#include <linux/console.h>
+#include <asm/prom.h>
+#include <asm/hvconsole.h>
+#include <asm/firmware.h>
+
+#include "hvc_console.h"
+
+extern int64_t beat_get_term_char(uint64_t, uint64_t *, uint64_t *, uint64_t *);
+extern int64_t beat_put_term_char(uint64_t, uint64_t, uint64_t, uint64_t);
+
+struct hvc_struct *hvc_beat_dev = NULL;
+
+/* bug: only one queue is available regardless of vtermno */
+static int hvc_beat_get_chars(uint32_t vtermno, char *buf, int cnt)
+{
+ static unsigned char q[sizeof(unsigned long) * 2]
+ __attribute__((aligned(sizeof(unsigned long))));
+ static int qlen = 0;
+ unsigned long got;
+
+again:
+ if (qlen) {
+ if (qlen > cnt) {
+ memcpy(buf, q, cnt);
+ qlen -= cnt;
+ memmove(q + cnt, q, qlen);
+ return cnt;
+ } else { /* qlen <= cnt */
+ int r;
+
+ memcpy(buf, q, qlen);
+ r = qlen;
+ qlen = 0;
+ return r;
+ }
+ }
+ if (beat_get_term_char(vtermno, &got,
+ ((unsigned long *)q), ((unsigned long *)q) + 1) == 0) {
+ qlen = got;
+ goto again;
+ }
+ return 0;
+}
+
+static int hvc_beat_put_chars(uint32_t vtermno, const char *buf, int cnt)
+{
+ unsigned long kb[2];
+ int rest, nlen;
+
+ for (rest = cnt; rest > 0; rest -= nlen) {
+ nlen = (rest > 16) ? 16 : rest;
+ memcpy(kb, buf, nlen);
+ beat_put_term_char(vtermno, rest, kb[0], kb[1]);
+ rest -= nlen;
+ }
+ return cnt;
+}
+
+static struct hv_ops hvc_beat_get_put_ops = {
+ .get_chars = hvc_beat_get_chars,
+ .put_chars = hvc_beat_put_chars,
+};
+
+static int hvc_beat_useit = 1;
+
+static int hvc_beat_config(char *p)
+{
+ hvc_beat_useit = simple_strtoul(p, NULL, 0);
+ return 0;
+}
+
+static int hvc_beat_console_init(void)
+{
+ if (hvc_beat_useit && machine_is_compatible("Beat")) {
+ hvc_instantiate(0, 0, &hvc_beat_get_put_ops);
+ }
+ return 0;
+}
+
+/* temp */
+static int hvc_beat_init(void)
+{
+ struct hvc_struct *hp;
+
+ if (!firmware_has_feature(FW_FEATURE_BEAT))
+ return -ENODEV;
+
+ hp = hvc_alloc(0, NO_IRQ, &hvc_beat_get_put_ops, 16);
+ if (IS_ERR(hp))
+ return PTR_ERR(hp);
+ hvc_beat_dev = hp;
+ return 0;
+}
+
+static void __exit hvc_beat_exit(void)
+{
+ if (hvc_beat_dev)
+ hvc_remove(hvc_beat_dev);
+}
+
+module_init(hvc_beat_init);
+module_exit(hvc_beat_exit);
+
+__setup("hvc_beat=", hvc_beat_config);
+
+console_initcall(hvc_beat_console_init);
diff --git a/drivers/char/watchdog/booke_wdt.c b/drivers/char/watchdog/booke_wdt.c
index 488902231cc..0e23f29f71a 100644
--- a/drivers/char/watchdog/booke_wdt.c
+++ b/drivers/char/watchdog/booke_wdt.c
@@ -35,7 +35,7 @@
#ifdef CONFIG_FSL_BOOKE
#define WDT_PERIOD_DEFAULT 63 /* Ex. wdt_period=28 bus=333Mhz , reset=~40sec */
#else
-#define WDT_PERIOD_DEFAULT 4 /* Refer to the PPC40x and PPC4xx manuals */
+#define WDT_PERIOD_DEFAULT 3 /* Refer to the PPC40x and PPC4xx manuals */
#endif /* for timing information */
u32 booke_wdt_enabled = 0;
@@ -48,12 +48,22 @@ u32 booke_wdt_period = WDT_PERIOD_DEFAULT;
#endif
/*
+ * booke_wdt_ping:
+ */
+static __inline__ void booke_wdt_ping(void)
+{
+ mtspr(SPRN_TSR, TSR_ENW|TSR_WIS);
+}
+
+/*
* booke_wdt_enable:
*/
static __inline__ void booke_wdt_enable(void)
{
u32 val;
+ /* clear status before enabling watchdog */
+ booke_wdt_ping();
val = mfspr(SPRN_TCR);
val |= (TCR_WIE|TCR_WRC(WRC_CHIP)|WDTP(booke_wdt_period));
@@ -61,14 +71,6 @@ static __inline__ void booke_wdt_enable(void)
}
/*
- * booke_wdt_ping:
- */
-static __inline__ void booke_wdt_ping(void)
-{
- mtspr(SPRN_TSR, TSR_ENW|TSR_WIS);
-}
-
-/*
* booke_wdt_write:
*/
static ssize_t booke_wdt_write (struct file *file, const char __user *buf,