summaryrefslogtreecommitdiffstats
path: root/target/linux/x86-2.4/patches/002-wd1100.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/x86-2.4/patches/002-wd1100.patch')
-rw-r--r--target/linux/x86-2.4/patches/002-wd1100.patch417
1 files changed, 417 insertions, 0 deletions
diff --git a/target/linux/x86-2.4/patches/002-wd1100.patch b/target/linux/x86-2.4/patches/002-wd1100.patch
new file mode 100644
index 000000000..8cb2dbd04
--- /dev/null
+++ b/target/linux/x86-2.4/patches/002-wd1100.patch
@@ -0,0 +1,417 @@
+diff -Nur linux-2.4.29/drivers/char/Config.in linux-2.4.29_geode/drivers/char/Config.in
+--- linux-2.4.29/drivers/char/Config.in Sun Aug 8 01:26:04 2004
++++ linux-2.4.29_geode/drivers/char/Config.in Tue Feb 15 23:41:54 2005
+@@ -270,6 +270,7 @@
+ fi
+ fi
+ tristate ' ZF MachZ Watchdog' CONFIG_MACHZ_WDT
++ tristate ' Embedded NatSemi SC1x00 Watchdog' CONFIG_WD1100
+ if [ "$CONFIG_SGI_IP22" = "y" ]; then
+ dep_tristate ' Indy/I2 Hardware Watchdog' CONFIG_INDYDOG $CONFIG_SGI_IP22
+ fi
+diff -Nur linux-2.4.29/drivers/char/Makefile linux-2.4.29_geode/drivers/char/Makefile
+--- linux-2.4.29/drivers/char/Makefile Sun Aug 8 01:26:04 2004
++++ linux-2.4.29_geode/drivers/char/Makefile Tue Feb 15 23:41:54 2005
+@@ -302,6 +302,7 @@
+ obj-$(CONFIG_ACQUIRE_WDT) += acquirewdt.o
+ obj-$(CONFIG_ADVANTECH_WDT) += advantechwdt.o
+ obj-$(CONFIG_IB700_WDT) += ib700wdt.o
++obj-$(CONFIG_WD1100) += wd1100.o
+ obj-$(CONFIG_MIXCOMWD) += mixcomwd.o
+ obj-$(CONFIG_60XX_WDT) += sbc60xxwdt.o
+ obj-$(CONFIG_W83877F_WDT) += w83877f_wdt.o
+diff -Nur linux-2.4.29/drivers/char/wd1100.c linux-2.4.29_geode/drivers/char/wd1100.c
+--- linux-2.4.29/drivers/char/wd1100.c Thu Jan 1 01:00:00 1970
++++ linux-2.4.29_geode/drivers/char/wd1100.c Tue Feb 15 23:41:54 2005
+@@ -0,0 +1,391 @@
++/*
++ * National Semiconductor SC1x00 CPU watchdog driver
++ * Copyright (c) Inprimis Technologies 2002
++ *
++ * by Mark Grosberg <markg@inprimis.com>
++ * and Rolando Goldman <rolandog@inprimis.com>
++ *
++ * Minor changes by Kianusch Sayah Karadji <kianusch@sk-tech.net>
++ * ( Soekris net4801 Support, module-parameter )
++ *
++ * 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/spinlock.h>
++#include <linux/sysctl.h>
++#include <linux/pci.h>
++
++/*
++ * Since the SC1100 is an x86 clone, we don't even bother with
++ * allowing other architectures to compile us.
++ */
++#ifndef CONFIG_X86
++# error Sorry this driver is only for x86.
++#endif
++
++#include <asm/system.h>
++#include <asm/io.h>
++#include <asm/uaccess.h>
++#include <asm/processor.h>
++
++/* #define DEBUG_WD1100 */
++
++static int proc_wd_timeout(ctl_table *ctl,
++ int write,
++ struct file *file,
++ void *buffer,
++ size_t *lenp);
++static int proc_wd_graceful(ctl_table *ctl,
++ int write,
++ struct file *file,
++ void *buffer,
++ size_t *lenp);
++
++/* Register definitions */
++
++#define SC1100_F5_VENDOR_ID 0x100B
++#define SC1100_F5_DEVICE_ID 0x0515
++
++#define CPU_WDTO_REG 0x00 /* watchdog time out, 16 bit register */
++#define CPU_WDCNFG_REG 0x02 /* watchdog config , 16 bit register */
++#define CPU_WDSTS_REG 0x04 /* watchdog status , 8 bit register */
++
++/* Default timeout: 4 seconds (changeable via sysctl) */
++static unsigned int sysctl_wd_timeout = 0;
++static unsigned int sysctl_wd_graceful = 0;
++
++static unsigned int timeout = 4;
++static unsigned int graceful = 1;
++
++MODULE_PARM (timeout, "i");
++MODULE_PARM (graceful, "i");
++
++static int in_use = 0;
++static unsigned short cpu_base;
++static spinlock_t wd_lock;
++
++/**************************************************************************/
++
++/* XXX To-do: DEV_WATCHDOG must be in include/linux/sysctl.h */
++enum
++{ DEV_WATCHDOG = 6 };
++
++enum
++{
++ DEV_WD_TIMEOUT = 1,
++ DEV_WD_GRACEFUL = 2
++};
++
++static struct ctl_table_header *wd_table_header;
++
++static ctl_table wd_table[] = {
++ {
++ DEV_WD_TIMEOUT, "timeout",
++ &sysctl_wd_timeout, sizeof(int), 0644, NULL, &proc_wd_timeout
++ },
++
++ {
++ DEV_WD_GRACEFUL, "graceful",
++ &sysctl_wd_graceful, sizeof(int), 0644, NULL, &proc_wd_graceful
++ },
++
++ {0}
++};
++
++static ctl_table wd_dir_table[] = {
++ {DEV_WATCHDOG, "wd", NULL, 0, 0555, wd_table},
++ {0}
++};
++
++static ctl_table wd_root_table[] = {
++ {CTL_DEV, "dev", NULL, 0, 0555, wd_dir_table},
++ {0}
++};
++
++static int proc_wd_timeout(ctl_table *ctl,
++ int write,
++ struct file *file,
++ void *buffer,
++ size_t *lenp)
++{
++ int rc;
++
++ rc = proc_dointvec(ctl, write, file, buffer, lenp);
++ if (write && (rc == 0))
++ {
++ /* Clamp to limits. */
++ if (sysctl_wd_timeout < 1)
++ sysctl_wd_timeout = 1;
++ else if (sysctl_wd_timeout > 65535)
++ sysctl_wd_timeout = 65535;
++ }
++
++ return (rc);
++}
++
++static int proc_wd_graceful(ctl_table *ctl,
++ int write,
++ struct file *file,
++ void *buffer,
++ size_t *lenp)
++{
++ int rc;
++
++ rc = proc_dointvec(ctl, write, file, buffer, lenp);
++ if (write && (rc == 0))
++ {
++ /* Clamp to true/false. */
++ if (sysctl_wd_graceful)
++ sysctl_wd_graceful = 1;
++ }
++
++ return (rc);
++}
++
++/**************************************************************************/
++
++static __inline__ void reset_wd(void)
++{
++ outw(sysctl_wd_timeout * 8, cpu_base + CPU_WDTO_REG);
++}
++
++static int reboot_reason(void)
++{
++ static int result;
++ static int fetched = 0;
++
++ if (!fetched)
++ {
++ unsigned char sr;
++
++ sr = inb(cpu_base + CPU_WDSTS_REG);
++ outb(sr | 1, cpu_base + CPU_WDSTS_REG);
++
++ fetched = 1;
++ }
++
++ return (result);
++}
++
++static struct watchdog_info wd_info =
++{
++ 0, /* Options */
++ 0, /* Firmware version */
++ "NSC SC1x00 WD"
++};
++
++static int wd_ioctl(struct inode *inode,
++ struct file *file,
++ unsigned int cmd,
++ unsigned long arg)
++{
++ int i;
++
++ switch (cmd)
++ {
++ default:
++ return (-ENOTTY);
++
++ case WDIOC_GETSUPPORT:
++ i = verify_area(VERIFY_WRITE, (void *)arg, sizeof(struct watchdog_info));
++ if (i)
++ return (i);
++ else
++ return copy_to_user((struct watchdog_info *)arg,
++ &wd_info,
++ sizeof(wd_info));
++ break;
++
++ case WDIOC_KEEPALIVE:
++ reset_wd();
++ return (0);
++
++ case WDIOC_GETBOOTSTATUS:
++ i = reboot_reason();
++ return (put_user(i, (int *)arg));
++
++ case WDIOC_GETSTATUS:
++ i = inw(cpu_base + CPU_WDTO_REG) / 8;
++ return (put_user(i, (int *)arg));
++ }
++}
++
++static int wd_open(struct inode *inode,
++ struct file *file)
++{
++ spin_lock(&wd_lock);
++ if (in_use)
++ {
++ spin_unlock(&wd_lock);
++ return (-EBUSY);
++ }
++ else
++ in_use++;
++
++ spin_unlock(&wd_lock);
++
++ MOD_INC_USE_COUNT;
++
++ /*
++ * Configure the chip to do a reset if the timer goes to 0.
++ * Set the clock divisor to 4096.
++ */
++
++ outw(0xfc, cpu_base + CPU_WDCNFG_REG);
++
++ /* Start the watchdog: It won't run until we write the TO reg. */
++ reset_wd();
++
++ return (0);
++}
++
++static int wd_release(struct inode *inode,
++ struct file *file)
++{
++ spin_lock(&wd_lock);
++
++ in_use = 0;
++
++ /*
++ * If graceful shutdown is not set, then don't bother to stop the
++ * watchdog timer. This handles the scenario where the user process
++ * that is poking the watchdog gets terminated due to some error
++ * (say a SEGV or some VM condition).
++ *
++ * In that case, the kernel would happily close the descriptor for
++ * us and leave us in a state where we aren't watching the dog...
++ *
++ * To work around this, the "graceful" sysctl prevents reset of the
++ * watchdog on close.
++ */
++ if (sysctl_wd_graceful)
++ outw(0, cpu_base + CPU_WDCNFG_REG);
++
++ spin_unlock(&wd_lock);
++ MOD_DEC_USE_COUNT;
++
++ return (0);
++}
++
++static ssize_t wd_write(struct file *file,
++ const char *data,
++ size_t len,
++ loff_t *ppos)
++{
++ /* Device is non-seekable. */
++ if (ppos != &file->f_pos)
++ return (-ESPIPE);
++
++ if (len > 0)
++ reset_wd();
++
++ return (len);
++}
++
++static struct file_operations wd_fops=
++{
++ owner: THIS_MODULE,
++ write: wd_write,
++ ioctl: wd_ioctl,
++ open: wd_open,
++ release: wd_release,
++};
++
++static struct miscdevice sc1x00wd_miscdev=
++{
++ WATCHDOG_MINOR,
++ "watchdog",
++ &wd_fops
++};
++
++static int __init wd_init(void)
++{
++ int ret;
++ struct pci_dev *dev;
++ unsigned int cw;
++
++ if (timeout < 1)
++ timeout = 1;
++ else if (timeout > 65535)
++ timeout = 65535;
++
++ if (graceful != 0)
++ graceful = 1;
++
++ sysctl_wd_timeout=timeout;
++ sysctl_wd_graceful=graceful;
++
++ if ((strcmp(boot_cpu_data.x86_vendor_id, "Geode by NSC") != 0)
++ || ((boot_cpu_data.x86_model != 4) && boot_cpu_data.x86_model != 9))
++ {
++ printk(KERN_WARNING "wd1100.c: This is not an SC1100 processor!\n");
++ return (0);
++ }
++
++ /* get the CONFIG BLOCK ADDRESS from scratch pad register */
++ dev = pci_find_device(SC1100_F5_VENDOR_ID,SC1100_F5_DEVICE_ID,0);
++ if (dev == NULL)
++ {
++ printk(KERN_ERR "wd1100.c: Can not find bridge device.\n");
++ return (0);
++ }
++
++ pci_read_config_dword(dev, 0x64, &cw);
++ cpu_base = (unsigned short )cw;
++
++#ifdef DEBUG_WD1100
++ printk("wd1100.c: CPU base = 0x%X\n", (unsigned int )cpu_base);
++#endif
++
++ printk(KERN_INFO "SC1x00 Watchdog driver by Inprimis Technolgies.\n");
++ /*
++ * We must call reboot_reason() to reset the flag in the WD.
++ *
++ * Even though it is available as an ioctl(), we call it during
++ * module initialization to perform the clear. You can take out
++ * the printk(), but don't take out the call to reboot_reason().
++ */
++ if (reboot_reason())
++ printk(KERN_INFO "Last reboot was by watchdog!\n");
++
++ spin_lock_init(&wd_lock);
++
++ ret = misc_register(&sc1x00wd_miscdev);
++ if (ret)
++ printk(KERN_ERR "wd1100.c: Can't register device.\n");
++ else
++ {
++ wd_table_header = register_sysctl_table(wd_root_table, 1);
++ if (wd_table_header == NULL)
++ printk(KERN_ERR "wd1100.c: Can't register sysctl.\n");
++ }
++
++ return 0;
++}
++
++static void __exit wd_exit(void)
++{
++ if (wd_table_header != NULL)
++ unregister_sysctl_table(wd_table_header);
++
++ misc_deregister(&sc1x00wd_miscdev);
++}
++
++EXPORT_NO_SYMBOLS;
++
++module_init(wd_init);
++module_exit(wd_exit);
++
++MODULE_LICENSE("GPL");
++
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-02 17:49:00 +0000