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authorLinus Torvalds <torvalds@linux-foundation.org>2008-08-27 14:37:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-08-27 14:37:28 -0700
commitee7cbabbd359b5d9a60de3d5f1693163e07987ca (patch)
tree29c3b01f8cdb26ccf69acaf5d0a64eefab87f7b3
parenta152db71d962f405f7e9be5c818bddf6d1be50a7 (diff)
parent3ccd3ec6d4a7750c49c4d2bbcc1d0e82cd4c8a7f (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: [WATCHDOG] removed unused #include <version.h> [WATCHDOG] at91rm9200_wdt.c: fix misleading indentation [WATCHDOG] mpc8xxx_wdt: fix modular build [WATCHDOG] hpwdt.c kdebug support [WATCHDOG] Add support for the IDT RC32434 watchdog [WATCHDOG] Add support for the built-int RDC R-321x SoC watchdog [WATHDOG] delete unused driver mpc8xx_wdt.c [WATCHDOG] Fix s3c2410_wdt driver coding style issues [WATCHDOG] Clean out header of s3c2410_wdt driver. [WATCHDOG] Fix NULL usage in s3c2410_wdt driver.
-rw-r--r--drivers/watchdog/Kconfig24
-rw-r--r--drivers/watchdog/Makefile3
-rw-r--r--drivers/watchdog/at91rm9200_wdt.c2
-rw-r--r--drivers/watchdog/hpwdt.c93
-rw-r--r--drivers/watchdog/mpc8xx_wdt.c170
-rw-r--r--drivers/watchdog/mpc8xxx_wdt.c11
-rw-r--r--drivers/watchdog/pc87413_wdt.c1
-rw-r--r--drivers/watchdog/rc32434_wdt.c344
-rw-r--r--drivers/watchdog/rdc321x_wdt.c285
-rw-r--r--drivers/watchdog/s3c2410_wdt.c16
10 files changed, 714 insertions, 235 deletions
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index db20542796bf..c51036716700 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -465,6 +465,16 @@ config PC87413_WDT
Most people will say N.
+config RDC321X_WDT
+ tristate "RDC R-321x SoC watchdog"
+ depends on X86_RDC321X
+ help
+ This is the driver for the built in hardware watchdog
+ in the RDC R-321x SoC.
+
+ To compile this driver as a module, choose M here: the
+ module will be called rdc321x_wdt.
+
config 60XX_WDT
tristate "SBC-60XX Watchdog Timer"
depends on X86
@@ -633,6 +643,16 @@ config SBC_EPX_C3_WATCHDOG
# MIPS Architecture
+config RC32434_WDT
+ tristate "IDT RC32434 SoC Watchdog Timer"
+ depends on MIKROTIK_RB532
+ help
+ Hardware driver for the IDT RC32434 SoC built-in
+ watchdog timer.
+
+ To compile this driver as a module, choose M here: the
+ module will be called rc32434_wdt.
+
config INDYDOG
tristate "Indy/I2 Hardware Watchdog"
depends on SGI_HAS_INDYDOG
@@ -692,10 +712,6 @@ config MPC5200_WDT
tristate "MPC5200 Watchdog Timer"
depends on PPC_MPC52xx
-config 8xx_WDT
- tristate "MPC8xx Watchdog Timer"
- depends on 8xx
-
config 8xxx_WDT
tristate "MPC8xxx Platform Watchdog Timer"
depends on PPC_8xx || PPC_83xx || PPC_86xx
diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
index ca3dc043d786..e0ef123fbdea 100644
--- a/drivers/watchdog/Makefile
+++ b/drivers/watchdog/Makefile
@@ -75,6 +75,7 @@ obj-$(CONFIG_HP_WATCHDOG) += hpwdt.o
obj-$(CONFIG_SC1200_WDT) += sc1200wdt.o
obj-$(CONFIG_SCx200_WDT) += scx200_wdt.o
obj-$(CONFIG_PC87413_WDT) += pc87413_wdt.o
+obj-$(CONFIG_RDC321X_WDT) += rdc321x_wdt.o
obj-$(CONFIG_60XX_WDT) += sbc60xxwdt.o
obj-$(CONFIG_SBC8360_WDT) += sbc8360.o
obj-$(CONFIG_SBC7240_WDT) += sbc7240_wdt.o
@@ -94,6 +95,7 @@ obj-$(CONFIG_SBC_EPX_C3_WATCHDOG) += sbc_epx_c3.o
# M68KNOMMU Architecture
# MIPS Architecture
+obj-$(CONFIG_RC32434_WDT) += rc32434_wdt.o
obj-$(CONFIG_INDYDOG) += indydog.o
obj-$(CONFIG_WDT_MTX1) += mtx-1_wdt.o
obj-$(CONFIG_WDT_RM9K_GPI) += rm9k_wdt.o
@@ -104,7 +106,6 @@ obj-$(CONFIG_TXX9_WDT) += txx9wdt.o
# PARISC Architecture
# POWERPC Architecture
-obj-$(CONFIG_8xx_WDT) += mpc8xx_wdt.o
obj-$(CONFIG_MPC5200_WDT) += mpc5200_wdt.o
obj-$(CONFIG_8xxx_WDT) += mpc8xxx_wdt.o
obj-$(CONFIG_MV64X60_WDT) += mv64x60_wdt.o
diff --git a/drivers/watchdog/at91rm9200_wdt.c b/drivers/watchdog/at91rm9200_wdt.c
index d061f0ad2d20..993e5f52afef 100644
--- a/drivers/watchdog/at91rm9200_wdt.c
+++ b/drivers/watchdog/at91rm9200_wdt.c
@@ -241,7 +241,7 @@ static int at91wdt_resume(struct platform_device *pdev)
{
if (at91wdt_busy)
at91_wdt_start();
- return 0;
+ return 0;
}
#else
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index d039d5f2fd1c..a3765e0be4a8 100644
--- a/drivers/watchdog/hpwdt.c
+++ b/drivers/watchdog/hpwdt.c
@@ -116,6 +116,7 @@ static unsigned int reload; /* the computed soft_margin */
static int nowayout = WATCHDOG_NOWAYOUT;
static char expect_release;
static unsigned long hpwdt_is_open;
+static unsigned int allow_kdump;
static void __iomem *pci_mem_addr; /* the PCI-memory address */
static unsigned long __iomem *hpwdt_timer_reg;
@@ -221,19 +222,19 @@ static int __devinit cru_detect(unsigned long map_entry,
if (cmn_regs.u1.ral != 0) {
printk(KERN_WARNING
- "hpwdt: Call succeeded but with an error: 0x%x\n",
- cmn_regs.u1.ral);
+ "hpwdt: Call succeeded but with an error: 0x%x\n",
+ cmn_regs.u1.ral);
} else {
physical_bios_base = cmn_regs.u2.rebx;
physical_bios_offset = cmn_regs.u4.redx;
cru_length = cmn_regs.u3.recx;
cru_physical_address =
- physical_bios_base + physical_bios_offset;
+ physical_bios_base + physical_bios_offset;
/* If the values look OK, then map it in. */
if ((physical_bios_base + physical_bios_offset)) {
cru_rom_addr =
- ioremap(cru_physical_address, cru_length);
+ ioremap(cru_physical_address, cru_length);
if (cru_rom_addr)
retval = 0;
}
@@ -356,7 +357,6 @@ asm(".text \n\t"
"call *%r12 \n\t"
"pushfq \n\t"
"popq %r12 \n\t"
- "popfq \n\t"
"movl %eax, (%r9) \n\t"
"movl %ebx, 4(%r9) \n\t"
"movl %ecx, 8(%r9) \n\t"
@@ -390,10 +390,10 @@ static void __devinit dmi_find_cru(const struct dmi_header *dm)
smbios_cru64_ptr = (struct smbios_cru64_info *) dm;
if (smbios_cru64_ptr->signature == CRU_BIOS_SIGNATURE_VALUE) {
cru_physical_address =
- smbios_cru64_ptr->physical_address +
- smbios_cru64_ptr->double_offset;
+ smbios_cru64_ptr->physical_address +
+ smbios_cru64_ptr->double_offset;
cru_rom_addr = ioremap(cru_physical_address,
- smbios_cru64_ptr->double_length);
+ smbios_cru64_ptr->double_length);
}
}
}
@@ -405,7 +405,7 @@ static int __devinit detect_cru_service(void)
dmi_walk(dmi_find_cru);
/* if cru_rom_addr has been set then we found a CRU service */
- return ((cru_rom_addr != NULL) ? 0: -ENODEV);
+ return ((cru_rom_addr != NULL) ? 0 : -ENODEV);
}
/* ------------------------------------------------------------------------- */
@@ -413,34 +413,6 @@ static int __devinit detect_cru_service(void)
#endif
/*
- * NMI Handler
- */
-static int hpwdt_pretimeout(struct notifier_block *nb, unsigned long ulReason,
- void *data)
-{
- unsigned long rom_pl;
- static int die_nmi_called;
-
- if (ulReason != DIE_NMI && ulReason != DIE_NMI_IPI)
- return NOTIFY_OK;
-
- spin_lock_irqsave(&rom_lock, rom_pl);
- if (!die_nmi_called)
- asminline_call(&cmn_regs, cru_rom_addr);
- die_nmi_called = 1;
- spin_unlock_irqrestore(&rom_lock, rom_pl);
- if (cmn_regs.u1.ral == 0) {
- printk(KERN_WARNING "hpwdt: An NMI occurred, "
- "but unable to determine source.\n");
- } else {
- panic("An NMI occurred, please see the Integrated "
- "Management Log for details.\n");
- }
-
- return NOTIFY_STOP;
-}
-
-/*
* Watchdog operations
*/
static void hpwdt_start(void)
@@ -484,6 +456,36 @@ static int hpwdt_change_timer(int new_margin)
}
/*
+ * NMI Handler
+ */
+static int hpwdt_pretimeout(struct notifier_block *nb, unsigned long ulReason,
+ void *data)
+{
+ unsigned long rom_pl;
+ static int die_nmi_called;
+
+ if (ulReason != DIE_NMI && ulReason != DIE_NMI_IPI)
+ return NOTIFY_OK;
+
+ spin_lock_irqsave(&rom_lock, rom_pl);
+ if (!die_nmi_called)
+ asminline_call(&cmn_regs, cru_rom_addr);
+ die_nmi_called = 1;
+ spin_unlock_irqrestore(&rom_lock, rom_pl);
+ if (cmn_regs.u1.ral == 0) {
+ printk(KERN_WARNING "hpwdt: An NMI occurred, "
+ "but unable to determine source.\n");
+ } else {
+ if (allow_kdump)
+ hpwdt_stop();
+ panic("An NMI occurred, please see the Integrated "
+ "Management Log for details.\n");
+ }
+
+ return NOTIFY_STOP;
+}
+
+/*
* /dev/watchdog handling
*/
static int hpwdt_open(struct inode *inode, struct file *file)
@@ -625,17 +627,18 @@ static struct notifier_block die_notifier = {
*/
static int __devinit hpwdt_init_one(struct pci_dev *dev,
- const struct pci_device_id *ent)
+ const struct pci_device_id *ent)
{
int retval;
/*
* First let's find out if we are on an iLO2 server. We will
* not run on a legacy ASM box.
+ * So we only support the G5 ProLiant servers and higher.
*/
if (dev->subsystem_vendor != PCI_VENDOR_ID_HP) {
dev_warn(&dev->dev,
- "This server does not have an iLO2 ASIC.\n");
+ "This server does not have an iLO2 ASIC.\n");
return -ENODEV;
}
@@ -669,7 +672,7 @@ static int __devinit hpwdt_init_one(struct pci_dev *dev,
retval = detect_cru_service();
if (retval < 0) {
dev_warn(&dev->dev,
- "Unable to detect the %d Bit CRU Service.\n",
+ "Unable to detect the %d Bit CRU Service.\n",
HPWDT_ARCH);
goto error_get_cru;
}
@@ -684,7 +687,7 @@ static int __devinit hpwdt_init_one(struct pci_dev *dev,
retval = register_die_notifier(&die_notifier);
if (retval != 0) {
dev_warn(&dev->dev,
- "Unable to register a die notifier (err=%d).\n",
+ "Unable to register a die notifier (err=%d).\n",
retval);
goto error_die_notifier;
}
@@ -699,8 +702,9 @@ static int __devinit hpwdt_init_one(struct pci_dev *dev,
printk(KERN_INFO
"hp Watchdog Timer Driver: 1.00"
- ", timer margin: %d seconds( nowayout=%d).\n",
- soft_margin, nowayout);
+ ", timer margin: %d seconds (nowayout=%d)"
+ ", allow kernel dump: %s (default = 0/OFF).\n",
+ soft_margin, nowayout, (allow_kdump == 0) ? "OFF" : "ON");
return 0;
@@ -755,6 +759,9 @@ MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
module_param(soft_margin, int, 0);
MODULE_PARM_DESC(soft_margin, "Watchdog timeout in seconds");
+module_param(allow_kdump, int, 0);
+MODULE_PARM_DESC(allow_kdump, "Start a kernel dump after NMI occurs");
+
module_param(nowayout, int, 0);
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
diff --git a/drivers/watchdog/mpc8xx_wdt.c b/drivers/watchdog/mpc8xx_wdt.c
deleted file mode 100644
index 1336425acf20..000000000000
--- a/drivers/watchdog/mpc8xx_wdt.c
+++ /dev/null
@@ -1,170 +0,0 @@
-/*
- * mpc8xx_wdt.c - MPC8xx watchdog userspace interface
- *
- * Author: Florian Schirmer <jolt@tuxbox.org>
- *
- * 2002 (c) Florian Schirmer <jolt@tuxbox.org> This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-
-#include <linux/fs.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/miscdevice.h>
-#include <linux/module.h>
-#include <linux/watchdog.h>
-#include <asm/8xx_immap.h>
-#include <linux/uaccess.h>
-#include <linux/io.h>
-#include <syslib/m8xx_wdt.h>
-
-static unsigned long wdt_opened;
-static int wdt_status;
-static spinlock_t wdt_lock;
-
-static void mpc8xx_wdt_handler_disable(void)
-{
- volatile uint __iomem *piscr;
- piscr = (uint *)&((immap_t *)IMAP_ADDR)->im_sit.sit_piscr;
-
- if (!m8xx_has_internal_rtc)
- m8xx_wdt_stop_timer();
- else
- out_be32(piscr, in_be32(piscr) & ~(PISCR_PIE | PISCR_PTE));
- printk(KERN_NOTICE "mpc8xx_wdt: keep-alive handler deactivated\n");
-}
-
-static void mpc8xx_wdt_handler_enable(void)
-{
- volatile uint __iomem *piscr;
- piscr = (uint *)&((immap_t *)IMAP_ADDR)->im_sit.sit_piscr;
-
- if (!m8xx_has_internal_rtc)
- m8xx_wdt_install_timer();
- else
- out_be32(piscr, in_be32(piscr) | PISCR_PIE | PISCR_PTE);
- printk(KERN_NOTICE "mpc8xx_wdt: keep-alive handler activated\n");
-}
-
-static int mpc8xx_wdt_open(struct inode *inode, struct file *file)
-{
- if (test_and_set_bit(0, &wdt_opened))
- return -EBUSY;
- m8xx_wdt_reset();
- mpc8xx_wdt_handler_disable();
- return nonseekable_open(inode, file);
-}
-
-static int mpc8xx_wdt_release(struct inode *inode, struct file *file)
-{
- m8xx_wdt_reset();
-#if !defined(CONFIG_WATCHDOG_NOWAYOUT)
- mpc8xx_wdt_handler_enable();
-#endif
- clear_bit(0, &wdt_opened);
- return 0;
-}
-
-static ssize_t mpc8xx_wdt_write(struct file *file, const char *data,
- size_t len, loff_t *ppos)
-{
- if (len) {
- spin_lock(&wdt_lock);
- m8xx_wdt_reset();
- spin_unlock(&wdt_lock);
- }
- return len;
-}
-
-static long mpc8xx_wdt_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- int timeout;
- static struct watchdog_info info = {
- .options = WDIOF_KEEPALIVEPING,
- .firmware_version = 0,
- .identity = "MPC8xx watchdog",
- };
-
- switch (cmd) {
- case WDIOC_GETSUPPORT:
- if (copy_to_user((void *)arg, &info, sizeof(info)))
- return -EFAULT;
- break;
-
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- if (put_user(wdt_status, (int *)arg))
- return -EFAULT;
- wdt_status &= ~WDIOF_KEEPALIVEPING;
- break;
-
- case WDIOC_GETTEMP:
- return -EOPNOTSUPP;
-
- case WDIOC_SETOPTIONS:
- return -EOPNOTSUPP;
-
- case WDIOC_KEEPALIVE:
- spin_lock(&wdt_lock);
- m8xx_wdt_reset();
- wdt_status |= WDIOF_KEEPALIVEPING;
- spin_unlock(&wdt_lock);
- break;
-
- case WDIOC_SETTIMEOUT:
- return -EOPNOTSUPP;
-
- case WDIOC_GETTIMEOUT:
- spin_lock(&wdt_lock);
- timeout = m8xx_wdt_get_timeout();
- spin_unlock(&wdt_lock);
- if (put_user(timeout, (int *)arg))
- return -EFAULT;
- break;
-
- default:
- return -ENOTTY;
- }
-
- return 0;
-}
-
-static const struct file_operations mpc8xx_wdt_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = mpc8xx_wdt_write,
- .unlocked_ioctl = mpc8xx_wdt_ioctl,
- .open = mpc8xx_wdt_open,
- .release = mpc8xx_wdt_release,
-};
-
-static struct miscdevice mpc8xx_wdt_miscdev = {
- .minor = WATCHDOG_MINOR,
- .name = "watchdog",
- .fops = &mpc8xx_wdt_fops,
-};
-
-static int __init mpc8xx_wdt_init(void)
-{
- spin_lock_init(&wdt_lock);
- return misc_register(&mpc8xx_wdt_miscdev);
-}
-
-static void __exit mpc8xx_wdt_exit(void)
-{
- misc_deregister(&mpc8xx_wdt_miscdev);
-
- m8xx_wdt_reset();
- mpc8xx_wdt_handler_enable();
-}
-
-module_init(mpc8xx_wdt_init);
-module_exit(mpc8xx_wdt_exit);
-
-MODULE_AUTHOR("Florian Schirmer <jolt@tuxbox.org>");
-MODULE_DESCRIPTION("MPC8xx watchdog driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
diff --git a/drivers/watchdog/mpc8xxx_wdt.c b/drivers/watchdog/mpc8xxx_wdt.c
index f2094960e662..38c588ee694f 100644
--- a/drivers/watchdog/mpc8xxx_wdt.c
+++ b/drivers/watchdog/mpc8xxx_wdt.c
@@ -48,6 +48,7 @@ struct mpc8xxx_wdt_type {
};
static struct mpc8xxx_wdt __iomem *wd_base;
+static int mpc8xxx_wdt_init_late(void);
static u16 timeout = 0xffff;
module_param(timeout, ushort, 0);
@@ -213,6 +214,12 @@ static int __devinit mpc8xxx_wdt_probe(struct of_device *ofdev,
else
timeout_sec = timeout / freq;
+#ifdef MODULE
+ ret = mpc8xxx_wdt_init_late();
+ if (ret)
+ goto err_unmap;
+#endif
+
pr_info("WDT driver for MPC8xxx initialized. mode:%s timeout=%d "
"(%d seconds)\n", reset ? "reset" : "interrupt", timeout,
timeout_sec);
@@ -280,7 +287,7 @@ static struct of_platform_driver mpc8xxx_wdt_driver = {
* very early to start pinging the watchdog (misc devices are not yet
* available), and later module_init() just registers the misc device.
*/
-static int __init mpc8xxx_wdt_init_late(void)
+static int mpc8xxx_wdt_init_late(void)
{
int ret;
@@ -295,7 +302,9 @@ static int __init mpc8xxx_wdt_init_late(void)
}
return 0;
}
+#ifndef MODULE
module_init(mpc8xxx_wdt_init_late);
+#endif
static int __init mpc8xxx_wdt_init(void)
{
diff --git a/drivers/watchdog/pc87413_wdt.c b/drivers/watchdog/pc87413_wdt.c
index e91ada72da1d..484c215e9f3f 100644
--- a/drivers/watchdog/pc87413_wdt.c
+++ b/drivers/watchdog/pc87413_wdt.c
@@ -30,7 +30,6 @@
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/moduleparam.h>
-#include <linux/version.h>
#include <linux/io.h>
#include <linux/uaccess.h>
diff --git a/drivers/watchdog/rc32434_wdt.c b/drivers/watchdog/rc32434_wdt.c
new file mode 100644
index 000000000000..6756bcb009ed
--- /dev/null
+++ b/drivers/watchdog/rc32434_wdt.c
@@ -0,0 +1,344 @@
+/*
+ * IDT Interprise 79RC32434 watchdog driver
+ *
+ * Copyright (C) 2006, Ondrej Zajicek <santiago@crfreenet.org>
+ * Copyright (C) 2008, Florian Fainelli <florian@openwrt.org>
+ *
+ * based on
+ * SoftDog 0.05: A Software Watchdog Device
+ *
+ * (c) Copyright 1996 Alan Cox <alan@redhat.com>, All Rights Reserved.
+ *
+ * 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.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/miscdevice.h>
+#include <linux/watchdog.h>
+#include <linux/reboot.h>
+#include <linux/smp_lock.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/uaccess.h>
+
+#include <asm/bootinfo.h>
+#include <asm/time.h>
+#include <asm/mach-rc32434/integ.h>
+
+#define MAX_TIMEOUT 20
+#define RC32434_WDT_INTERVAL (15 * HZ)
+
+#define VERSION "0.2"
+
+static struct {
+ struct completion stop;
+ int running;
+ struct timer_list timer;
+ int queue;
+ int default_ticks;
+ unsigned long inuse;
+} rc32434_wdt_device;
+
+static struct integ __iomem *wdt_reg;
+static int ticks = 100 * HZ;
+
+static int expect_close;
+static int timeout;
+
+static int nowayout = WATCHDOG_NOWAYOUT;
+module_param(nowayout, int, 0);
+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+
+
+static void rc32434_wdt_start(void)
+{
+ u32 val;
+
+ if (!rc32434_wdt_device.inuse) {
+ writel(0, &wdt_reg->wtcount);
+
+ val = RC32434_ERR_WRE;
+ writel(readl(&wdt_reg->errcs) | val, &wdt_reg->errcs);
+
+ val = RC32434_WTC_EN;
+ writel(readl(&wdt_reg->wtc) | val, &wdt_reg->wtc);
+ }
+ rc32434_wdt_device.running++;
+}
+
+static void rc32434_wdt_stop(void)
+{
+ u32 val;
+
+ if (rc32434_wdt_device.running) {
+
+ val = ~RC32434_WTC_EN;
+ writel(readl(&wdt_reg->wtc) & val, &wdt_reg->wtc);
+
+ val = ~RC32434_ERR_WRE;
+ writel(readl(&wdt_reg->errcs) & val, &wdt_reg->errcs);
+
+ rc32434_wdt_device.running = 0;
+ }
+}
+
+static void rc32434_wdt_set(int new_timeout)
+{
+ u32 cmp = new_timeout * HZ;
+ u32 state, val;
+
+ timeout = new_timeout;
+ /*
+ * store and disable WTC
+ */
+ state = (u32)(readl(&wdt_reg->wtc) & RC32434_WTC_EN);
+ val = ~RC32434_WTC_EN;
+ writel(readl(&wdt_reg->wtc) & val, &wdt_reg->wtc);
+
+ writel(0, &wdt_reg->wtcount);
+ writel(cmp, &wdt_reg->wtcompare);
+
+ /*
+ * restore WTC
+ */
+
+ writel(readl(&wdt_reg->wtc) | state, &wdt_reg);
+}
+
+static void rc32434_wdt_reset(void)
+{
+ ticks = rc32434_wdt_device.default_ticks;
+}
+
+static void rc32434_wdt_update(unsigned long unused)
+{
+ if (rc32434_wdt_device.running)
+ ticks--;
+
+ writel(0, &wdt_reg->wtcount);
+
+ if (rc32434_wdt_device.queue && ticks)
+ mod_timer(&rc32434_wdt_device.timer,
+ jiffies + RC32434_WDT_INTERVAL);
+ else
+ complete(&rc32434_wdt_device.stop);
+}
+
+static int rc32434_wdt_open(struct inode *inode, struct file *file)
+{
+ if (test_and_set_bit(0, &rc32434_wdt_device.inuse))
+ return -EBUSY;
+
+ if (nowayout)
+ __module_get(THIS_MODULE);
+
+ return nonseekable_open(inode, file);
+}
+
+static int rc32434_wdt_release(struct inode *inode, struct file *file)
+{
+ if (expect_close && nowayout == 0) {
+ rc32434_wdt_stop();
+ printk(KERN_INFO KBUILD_MODNAME ": disabling watchdog timer\n");
+ module_put(THIS_MODULE);
+ } else
+ printk(KERN_CRIT KBUILD_MODNAME
+ ": device closed unexpectedly. WDT will not stop !\n");
+
+ clear_bit(0, &rc32434_wdt_device.inuse);
+ return 0;
+}
+
+static ssize_t rc32434_wdt_write(struct file *file, const char *data,
+ size_t len, loff_t *ppos)
+{
+ if (len) {
+ if (!nowayout) {
+ size_t i;
+
+ /* In case it was set long ago */
+ expect_close = 0;
+
+ for (i = 0; i != len; i++) {
+ char c;
+ if (get_user(c, data + i))
+ return -EFAULT;
+ if (c == 'V')
+ expect_close = 1;
+ }
+ }
+ rc32434_wdt_update(0);
+ return len;
+ }
+ return 0;
+}
+
+static int rc32434_wdt_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ void __user *argp = (void __user *)arg;
+ int new_timeout;
+ unsigned int value;
+ static struct watchdog_info ident = {
+ .options = WDIOF_SETTIMEOUT |
+ WDIOF_KEEPALIVEPING |
+ WDIOF_MAGICCLOSE,
+ .identity = "RC32434_WDT Watchdog",
+ };
+ switch (cmd) {
+ case WDIOC_KEEPALIVE:
+ rc32434_wdt_reset();
+ break;
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ value = readl(&wdt_reg->wtcount);
+ if (copy_to_user(argp, &value, sizeof(int)))
+ return -EFAULT;
+ break;
+ case WDIOC_GETSUPPORT:
+ if (copy_to_user(argp, &ident, sizeof(ident)))
+ return -EFAULT;
+ break;
+ case WDIOC_SETOPTIONS:
+ if (copy_from_user(&value, argp, sizeof(int)))
+ return -EFAULT;
+ switch (value) {
+ case WDIOS_ENABLECARD:
+ rc32434_wdt_start();
+ break;
+ case WDIOS_DISABLECARD:
+ rc32434_wdt_stop();
+ default:
+ return -EINVAL;
+ }
+ break;
+ case WDIOC_SETTIMEOUT:
+ if (copy_from_user(&new_timeout, argp, sizeof(int)))
+ return -EFAULT;
+ if (new_timeout < 1)
+ return -EINVAL;
+ if (new_timeout > MAX_TIMEOUT)
+ return -EINVAL;
+ rc32434_wdt_set(new_timeout);
+ case WDIOC_GETTIMEOUT:
+ return copy_to_user(argp, &timeout, sizeof(int));
+ default:
+ return -ENOTTY;
+ }
+
+ return 0;
+}
+
+static struct file_operations rc32434_wdt_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = rc32434_wdt_write,
+ .ioctl = rc32434_wdt_ioctl,
+ .open = rc32434_wdt_open,
+ .release = rc32434_wdt_release,
+};
+
+static struct miscdevice rc32434_wdt_miscdev = {
+ .minor = WATCHDOG_MINOR,
+ .name = "watchdog",
+ .fops = &rc32434_wdt_fops,
+};
+
+static char banner[] = KERN_INFO KBUILD_MODNAME
+ ": Watchdog Timer version " VERSION ", timer margin: %d sec\n";
+
+static int rc32434_wdt_probe(struct platform_device *pdev)
+{
+ int ret;
+ struct resource *r;
+
+ r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rb500_wdt_res");
+ if (!r) {
+ printk(KERN_ERR KBUILD_MODNAME
+ "failed to retrieve resources\n");
+ return -ENODEV;
+ }
+
+ wdt_reg = ioremap_nocache(r->start, r->end - r->start);
+ if (!wdt_reg) {
+ printk(KERN_ERR KBUILD_MODNAME
+ "failed to remap I/O resources\n");
+ return -ENXIO;
+ }
+
+ ret = misc_register(&rc32434_wdt_miscdev);
+
+ if (ret < 0) {
+ printk(KERN_ERR KBUILD_MODNAME
+ "failed to register watchdog device\n");
+ goto unmap;
+ }
+
+ init_completion(&rc32434_wdt_device.stop);
+ rc32434_wdt_device.queue = 0;
+
+ clear_bit(0, &rc32434_wdt_device.inuse);
+
+ setup_timer(&rc32434_wdt_device.timer, rc32434_wdt_update, 0L);
+
+ rc32434_wdt_device.default_ticks = ticks;
+
+ rc32434_wdt_start();
+
+ printk(banner, timeout);
+
+ return 0;
+
+unmap:
+ iounmap(wdt_reg);
+ return ret;
+}
+
+static int rc32434_wdt_remove(struct platform_device *pdev)
+{
+ if (rc32434_wdt_device.queue) {
+ rc32434_wdt_device.queue = 0;
+ wait_for_completion(&rc32434_wdt_device.stop);
+ }
+ misc_deregister(&rc32434_wdt_miscdev);
+
+ iounmap(wdt_reg);
+
+ return 0;
+}
+
+static struct platform_driver rc32434_wdt = {
+ .probe = rc32434_wdt_probe,
+ .remove = rc32434_wdt_remove,
+ .driver = {
+ .name = "rc32434_wdt",
+ }
+};
+
+static int __init rc32434_wdt_init(void)
+{
+ return platform_driver_register(&rc32434_wdt);
+}
+
+static void __exit rc32434_wdt_exit(void)
+{
+ platform_driver_unregister(&rc32434_wdt);
+}
+
+module_init(rc32434_wdt_init);
+module_exit(rc32434_wdt_exit);
+
+MODULE_AUTHOR("Ondrej Zajicek <santiago@crfreenet.org>,"
+ "Florian Fainelli <florian@openwrt.org>");
+MODULE_DESCRIPTION("Driver for the IDT RC32434 SoC watchdog");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
diff --git a/drivers/watchdog/rdc321x_wdt.c b/drivers/watchdog/rdc321x_wdt.c
new file mode 100644
index 000000000000..9108efa73e7d
--- /dev/null
+++ b/drivers/watchdog/rdc321x_wdt.c
@@ -0,0 +1,285 @@
+/*
+ * RDC321x watchdog driver
+ *
+ * Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
+ *
+ * This driver is highly inspired from the cpu5_wdt driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/miscdevice.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/timer.h>
+#include <linux/completion.h>
+#include <linux/jiffies.h>
+#include <linux/platform_device.h>
+#include <linux/watchdog.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+
+#include <asm/mach-rdc321x/rdc321x_defs.h>
+
+#define RDC_WDT_MASK 0x80000000 /* Mask */
+#define RDC_WDT_EN 0x00800000 /* Enable bit */
+#define RDC_WDT_WTI 0x00200000 /* Generate CPU reset/NMI/WDT on timeout */
+#define RDC_WDT_RST 0x00100000 /* Reset bit */
+#define RDC_WDT_WIF 0x00040000 /* WDT IRQ Flag */
+#define RDC_WDT_IRT 0x00000100 /* IRQ Routing table */
+#define RDC_WDT_CNT 0x00000001 /* WDT count */
+
+#define RDC_CLS_TMR 0x80003844 /* Clear timer */
+
+#define RDC_WDT_INTERVAL (HZ/10+1)
+
+static int ticks = 1000;
+
+/* some device data */
+
+static struct {
+ struct completion stop;
+ int running;
+ struct timer_list timer;
+ int queue;
+ int default_ticks;
+ unsigned long inuse;
+ spinlock_t lock;
+} rdc321x_wdt_device;
+
+/* generic helper functions */
+
+static void rdc321x_wdt_trigger(unsigned long unused)
+{
+ unsigned long flags;
+
+ if (rdc321x_wdt_device.running)
+ ticks--;
+
+ /* keep watchdog alive */
+ spin_lock_irqsave(&rdc321x_wdt_device.lock, flags);
+ outl(RDC_WDT_EN | inl(RDC3210_CFGREG_DATA),
+ RDC3210_CFGREG_DATA);
+ spin_unlock_irqrestore(&rdc321x_wdt_device.lock, flags);
+
+ /* requeue?? */
+ if (rdc321x_wdt_device.queue && ticks)
+ mod_timer(&rdc321x_wdt_device.timer,
+ jiffies + RDC_WDT_INTERVAL);
+ else {
+ /* ticks doesn't matter anyway */
+ complete(&rdc321x_wdt_device.stop);
+ }
+
+}
+
+static void rdc321x_wdt_reset(void)
+{
+ ticks = rdc321x_wdt_device.default_ticks;
+}
+
+static void rdc321x_wdt_start(void)
+{
+ unsigned long flags;
+
+ if (!rdc321x_wdt_device.queue) {
+ rdc321x_wdt_device.queue = 1;
+
+ /* Clear the timer */
+ spin_lock_irqsave(&rdc321x_wdt_device.lock, flags);
+ outl(RDC_CLS_TMR, RDC3210_CFGREG_ADDR);
+
+ /* Enable watchdog and set the timeout to 81.92 us */
+ outl(RDC_WDT_EN | RDC_WDT_CNT, RDC3210_CFGREG_DATA);
+ spin_unlock_irqrestore(&rdc321x_wdt_device.lock, flags);
+
+ mod_timer(&rdc321x_wdt_device.timer,
+ jiffies + RDC_WDT_INTERVAL);
+ }
+
+ /* if process dies, counter is not decremented */
+ rdc321x_wdt_device.running++;
+}
+
+static int rdc321x_wdt_stop(void)
+{
+ if (rdc321x_wdt_device.running)
+ rdc321x_wdt_device.running = 0;
+
+ ticks = rdc321x_wdt_device.default_ticks;
+
+ return -EIO;
+}
+
+/* filesystem operations */
+static int rdc321x_wdt_open(struct inode *inode, struct file *file)
+{
+ if (test_and_set_bit(0, &rdc321x_wdt_device.inuse))
+ return -EBUSY;
+
+ return nonseekable_open(inode, file);
+}
+
+static int rdc321x_wdt_release(struct inode *inode, struct file *file)
+{
+ clear_bit(0, &rdc321x_wdt_device.inuse);
+ return 0;
+}
+
+static int rdc321x_wdt_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ void __user *argp = (void __user *)arg;
+ unsigned int value;
+ static struct watchdog_info ident = {
+ .options = WDIOF_CARDRESET,
+ .identity = "RDC321x WDT",
+ };
+ unsigned long flags;
+
+ switch (cmd) {
+ case WDIOC_KEEPALIVE:
+ rdc321x_wdt_reset();
+ break;
+ case WDIOC_GETSTATUS:
+ /* Read the value from the DATA register */
+ spin_lock_irqsave(&rdc321x_wdt_device.lock, flags);
+ value = inl(RDC3210_CFGREG_DATA);
+ spin_unlock_irqrestore(&rdc321x_wdt_device.lock, flags);
+ if (copy_to_user(argp, &value, sizeof(int)))
+ return -EFAULT;
+ break;
+ case WDIOC_GETSUPPORT:
+ if (copy_to_user(argp, &ident, sizeof(ident)))
+ return -EFAULT;
+ break;
+ case WDIOC_SETOPTIONS:
+ if (copy_from_user(&value, argp, sizeof(int)))
+ return -EFAULT;
+ switch (value) {
+ case WDIOS_ENABLECARD:
+ rdc321x_wdt_start();
+ break;
+ case WDIOS_DISABLECARD:
+ return rdc321x_wdt_stop();
+ default:
+ return -EINVAL;
+ }
+ break;
+ default:
+ return -ENOTTY;
+ }
+ return 0;
+}
+
+static ssize_t rdc321x_wdt_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ if (!count)
+ return -EIO;
+
+ rdc321x_wdt_reset();
+
+ return count;
+}
+
+static const struct file_operations rdc321x_wdt_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .ioctl = rdc321x_wdt_ioctl,
+ .open = rdc321x_wdt_open,
+ .write = rdc321x_wdt_write,
+ .release = rdc321x_wdt_release,
+};
+
+static struct miscdevice rdc321x_wdt_misc = {
+ .minor = WATCHDOG_MINOR,
+ .name = "watchdog",
+ .fops = &rdc321x_wdt_fops,
+};
+
+static int __devinit rdc321x_wdt_probe(struct platform_device *pdev)
+{
+ int err;
+
+ err = misc_register(&rdc321x_wdt_misc);
+ if (err < 0) {
+ printk(KERN_ERR PFX "watchdog misc_register failed\n");
+ return err;
+ }
+
+ spin_lock_init(&rdc321x_wdt_device.lock);
+
+ /* Reset the watchdog */
+ outl(RDC_WDT_RST, RDC3210_CFGREG_DATA);
+
+ init_completion(&rdc321x_wdt_device.stop);
+ rdc321x_wdt_device.queue = 0;
+
+ clear_bit(0, &rdc321x_wdt_device.inuse);
+
+ setup_timer(&rdc321x_wdt_device.timer, rdc321x_wdt_trigger, 0);
+
+ rdc321x_wdt_device.default_ticks = ticks;
+
+ printk(KERN_INFO PFX "watchdog init success\n");
+
+ return 0;
+}
+
+static int rdc321x_wdt_remove(struct platform_device *pdev)
+{
+ if (rdc321x_wdt_device.queue) {
+ rdc321x_wdt_device.queue = 0;
+ wait_for_completion(&rdc321x_wdt_device.stop);
+ }
+
+ misc_deregister(&rdc321x_wdt_misc);
+
+ return 0;
+}
+
+static struct platform_driver rdc321x_wdt_driver = {
+ .probe = rdc321x_wdt_probe,
+ .remove = rdc321x_wdt_remove,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "rdc321x-wdt",
+ },
+};
+
+static int __init rdc321x_wdt_init(void)
+{
+ return platform_driver_register(&rdc321x_wdt_driver);
+}
+
+static void __exit rdc321x_wdt_exit(void)
+{
+ platform_driver_unregister(&rdc321x_wdt_driver);
+}
+
+module_init(rdc321x_wdt_init);
+module_exit(rdc321x_wdt_exit);
+
+MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
+MODULE_DESCRIPTION("RDC321x watchdog driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c
index 22715e3be5e7..86d42801de45 100644
--- a/drivers/watchdog/s3c2410_wdt.c
+++ b/drivers/watchdog/s3c2410_wdt.c
@@ -21,18 +21,6 @@
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Changelog:
- * 05-Oct-2004 BJD Added semaphore init to stop crashes on open
- * Fixed tmr_count / wdt_count confusion
- * Added configurable debug
- *
- * 11-Jan-2005 BJD Fixed divide-by-2 in timeout code
- *
- * 25-Jan-2005 DA Added suspend/resume support
- * Replaced reboot notifier with .shutdown method
- *
- * 10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA
*/
#include <linux/module.h>
@@ -365,7 +353,7 @@ static int s3c2410wdt_probe(struct platform_device *pdev)
return -ENOENT;
}
- size = (res->end-res->start)+1;
+ size = (res->end - res->start) + 1;
wdt_mem = request_mem_region(res->start, size, pdev->name);
if (wdt_mem == NULL) {
dev_err(dev, "failed to get memory region\n");
@@ -374,7 +362,7 @@ static int s3c2410wdt_probe(struct platform_device *pdev)
}
wdt_base = ioremap(res->start, size);
- if (wdt_base == 0) {
+ if (wdt_base == NULL) {
dev_err(dev, "failed to ioremap() region\n");
ret = -EINVAL;
goto err_req;

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