watchdog: remove pnx83xx driver
Commit 625326ea9c ("MIPS: Remove PNX833x alias NXP_STB22x") removed
support for PNX833x, so it's time to remove watchdog driver, too.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20201106130508.103598-1-tsbogend@alpha.franken.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This commit is contained in:
Thomas Bogendoerfer
Wim Van Sebroeck
Родитель
7c7164f935
Коммит
4600736f05
|
|
@ -1698,16 +1698,6 @@ config WDT_MTX1
|
|||
Hardware driver for the MTX-1 boards. This is a watchdog timer that
|
||||
will reboot the machine after a 100 seconds timer expired.
|
||||
|
||||
config PNX833X_WDT
|
||||
tristate "PNX833x Hardware Watchdog"
|
||||
depends on SOC_PNX8335
|
||||
depends on BROKEN
|
||||
help
|
||||
Hardware driver for the PNX833x's watchdog. This is a
|
||||
watchdog timer that will reboot the machine after a programmable
|
||||
timer has expired and no process has written to /dev/watchdog during
|
||||
that time.
|
||||
|
||||
config SIBYTE_WDOG
|
||||
tristate "Sibyte SoC hardware watchdog"
|
||||
depends on CPU_SB1 || (MIPS && COMPILE_TEST)
|
||||
|
|
|
|||
|
|
@ -161,7 +161,6 @@ obj-$(CONFIG_RC32434_WDT) += rc32434_wdt.o
|
|||
obj-$(CONFIG_INDYDOG) += indydog.o
|
||||
obj-$(CONFIG_JZ4740_WDT) += jz4740_wdt.o
|
||||
obj-$(CONFIG_WDT_MTX1) += mtx-1_wdt.o
|
||||
obj-$(CONFIG_PNX833X_WDT) += pnx833x_wdt.o
|
||||
obj-$(CONFIG_SIBYTE_WDOG) += sb_wdog.o
|
||||
obj-$(CONFIG_AR7_WDT) += ar7_wdt.o
|
||||
obj-$(CONFIG_TXX9_WDT) += txx9wdt.o
|
||||
|
|
|
|||
|
|
@ -1,277 +0,0 @@
|
|||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
/*
|
||||
* PNX833x Hardware Watchdog Driver
|
||||
* Copyright 2008 NXP Semiconductors
|
||||
* Daniel Laird <daniel.j.laird@nxp.com>
|
||||
* Andre McCurdy <andre.mccurdy@nxp.com>
|
||||
*
|
||||
* Heavily based upon - IndyDog 0.3
|
||||
* A Hardware Watchdog Device for SGI IP22
|
||||
*
|
||||
* (c) Copyright 2002 Guido Guenther <agx@sigxcpu.org>, All Rights Reserved.
|
||||
*
|
||||
* based on softdog.c by Alan Cox <alan@redhat.com>
|
||||
*/
|
||||
|
||||
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/moduleparam.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/notifier.h>
|
||||
#include <linux/reboot.h>
|
||||
#include <linux/init.h>
|
||||
#include <asm/mach-pnx833x/pnx833x.h>
|
||||
|
||||
#define WATCHDOG_TIMEOUT 30 /* 30 sec Maximum timeout */
|
||||
#define WATCHDOG_COUNT_FREQUENCY 68000000U /* Watchdog counts at 68MHZ. */
|
||||
#define PNX_WATCHDOG_TIMEOUT (WATCHDOG_TIMEOUT * WATCHDOG_COUNT_FREQUENCY)
|
||||
#define PNX_TIMEOUT_VALUE 2040000000U
|
||||
|
||||
/** CONFIG block */
|
||||
#define PNX833X_CONFIG (0x07000U)
|
||||
#define PNX833X_CONFIG_CPU_WATCHDOG (0x54)
|
||||
#define PNX833X_CONFIG_CPU_WATCHDOG_COMPARE (0x58)
|
||||
#define PNX833X_CONFIG_CPU_COUNTERS_CONTROL (0x1c)
|
||||
|
||||
/** RESET block */
|
||||
#define PNX833X_RESET (0x08000U)
|
||||
#define PNX833X_RESET_CONFIG (0x08)
|
||||
|
||||
static int pnx833x_wdt_alive;
|
||||
|
||||
/* Set default timeout in MHZ.*/
|
||||
static int pnx833x_wdt_timeout = PNX_WATCHDOG_TIMEOUT;
|
||||
module_param(pnx833x_wdt_timeout, int, 0);
|
||||
MODULE_PARM_DESC(timeout, "Watchdog timeout in Mhz. (68Mhz clock), default="
|
||||
__MODULE_STRING(PNX_TIMEOUT_VALUE) "(30 seconds).");
|
||||
|
||||
static bool nowayout = WATCHDOG_NOWAYOUT;
|
||||
module_param(nowayout, bool, 0);
|
||||
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
|
||||
__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
|
||||
|
||||
#define START_DEFAULT 1
|
||||
static int start_enabled = START_DEFAULT;
|
||||
module_param(start_enabled, int, 0);
|
||||
MODULE_PARM_DESC(start_enabled, "Watchdog is started on module insertion "
|
||||
"(default=" __MODULE_STRING(START_DEFAULT) ")");
|
||||
|
||||
static void pnx833x_wdt_start(void)
|
||||
{
|
||||
/* Enable watchdog causing reset. */
|
||||
PNX833X_REG(PNX833X_RESET + PNX833X_RESET_CONFIG) |= 0x1;
|
||||
/* Set timeout.*/
|
||||
PNX833X_REG(PNX833X_CONFIG +
|
||||
PNX833X_CONFIG_CPU_WATCHDOG_COMPARE) = pnx833x_wdt_timeout;
|
||||
/* Enable watchdog. */
|
||||
PNX833X_REG(PNX833X_CONFIG +
|
||||
PNX833X_CONFIG_CPU_COUNTERS_CONTROL) |= 0x1;
|
||||
|
||||
pr_info("Started watchdog timer\n");
|
||||
}
|
||||
|
||||
static void pnx833x_wdt_stop(void)
|
||||
{
|
||||
/* Disable watchdog causing reset. */
|
||||
PNX833X_REG(PNX833X_RESET + PNX833X_CONFIG) &= 0xFFFFFFFE;
|
||||
/* Disable watchdog.*/
|
||||
PNX833X_REG(PNX833X_CONFIG +
|
||||
PNX833X_CONFIG_CPU_COUNTERS_CONTROL) &= 0xFFFFFFFE;
|
||||
|
||||
pr_info("Stopped watchdog timer\n");
|
||||
}
|
||||
|
||||
static void pnx833x_wdt_ping(void)
|
||||
{
|
||||
PNX833X_REG(PNX833X_CONFIG +
|
||||
PNX833X_CONFIG_CPU_WATCHDOG_COMPARE) = pnx833x_wdt_timeout;
|
||||
}
|
||||
|
||||
/*
|
||||
* Allow only one person to hold it open
|
||||
*/
|
||||
static int pnx833x_wdt_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
if (test_and_set_bit(0, &pnx833x_wdt_alive))
|
||||
return -EBUSY;
|
||||
|
||||
if (nowayout)
|
||||
__module_get(THIS_MODULE);
|
||||
|
||||
/* Activate timer */
|
||||
if (!start_enabled)
|
||||
pnx833x_wdt_start();
|
||||
|
||||
pnx833x_wdt_ping();
|
||||
|
||||
pr_info("Started watchdog timer\n");
|
||||
|
||||
return stream_open(inode, file);
|
||||
}
|
||||
|
||||
static int pnx833x_wdt_release(struct inode *inode, struct file *file)
|
||||
{
|
||||
/* Shut off the timer.
|
||||
* Lock it in if it's a module and we defined ...NOWAYOUT */
|
||||
if (!nowayout)
|
||||
pnx833x_wdt_stop(); /* Turn the WDT off */
|
||||
|
||||
clear_bit(0, &pnx833x_wdt_alive);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static ssize_t pnx833x_wdt_write(struct file *file, const char *data, size_t len, loff_t *ppos)
|
||||
{
|
||||
/* Refresh the timer. */
|
||||
if (len)
|
||||
pnx833x_wdt_ping();
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
static long pnx833x_wdt_ioctl(struct file *file, unsigned int cmd,
|
||||
unsigned long arg)
|
||||
{
|
||||
int options, new_timeout = 0;
|
||||
uint32_t timeout, timeout_left = 0;
|
||||
|
||||
static const struct watchdog_info ident = {
|
||||
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT,
|
||||
.firmware_version = 0,
|
||||
.identity = "Hardware Watchdog for PNX833x",
|
||||
};
|
||||
|
||||
switch (cmd) {
|
||||
default:
|
||||
return -ENOTTY;
|
||||
|
||||
case WDIOC_GETSUPPORT:
|
||||
if (copy_to_user((struct watchdog_info *)arg,
|
||||
&ident, sizeof(ident)))
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
|
||||
case WDIOC_GETSTATUS:
|
||||
case WDIOC_GETBOOTSTATUS:
|
||||
return put_user(0, (int *)arg);
|
||||
|
||||
case WDIOC_SETOPTIONS:
|
||||
if (get_user(options, (int *)arg))
|
||||
return -EFAULT;
|
||||
|
||||
if (options & WDIOS_DISABLECARD)
|
||||
pnx833x_wdt_stop();
|
||||
|
||||
if (options & WDIOS_ENABLECARD)
|
||||
pnx833x_wdt_start();
|
||||
|
||||
return 0;
|
||||
|
||||
case WDIOC_KEEPALIVE:
|
||||
pnx833x_wdt_ping();
|
||||
return 0;
|
||||
|
||||
case WDIOC_SETTIMEOUT:
|
||||
{
|
||||
if (get_user(new_timeout, (int *)arg))
|
||||
return -EFAULT;
|
||||
|
||||
pnx833x_wdt_timeout = new_timeout;
|
||||
PNX833X_REG(PNX833X_CONFIG +
|
||||
PNX833X_CONFIG_CPU_WATCHDOG_COMPARE) = new_timeout;
|
||||
return put_user(new_timeout, (int *)arg);
|
||||
}
|
||||
|
||||
case WDIOC_GETTIMEOUT:
|
||||
timeout = PNX833X_REG(PNX833X_CONFIG +
|
||||
PNX833X_CONFIG_CPU_WATCHDOG_COMPARE);
|
||||
return put_user(timeout, (int *)arg);
|
||||
|
||||
case WDIOC_GETTIMELEFT:
|
||||
timeout_left = PNX833X_REG(PNX833X_CONFIG +
|
||||
PNX833X_CONFIG_CPU_WATCHDOG);
|
||||
return put_user(timeout_left, (int *)arg);
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
static int pnx833x_wdt_notify_sys(struct notifier_block *this,
|
||||
unsigned long code, void *unused)
|
||||
{
|
||||
if (code == SYS_DOWN || code == SYS_HALT)
|
||||
pnx833x_wdt_stop(); /* Turn the WDT off */
|
||||
|
||||
return NOTIFY_DONE;
|
||||
}
|
||||
|
||||
static const struct file_operations pnx833x_wdt_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.llseek = no_llseek,
|
||||
.write = pnx833x_wdt_write,
|
||||
.unlocked_ioctl = pnx833x_wdt_ioctl,
|
||||
.compat_ioctl = compat_ptr_ioctl,
|
||||
.open = pnx833x_wdt_open,
|
||||
.release = pnx833x_wdt_release,
|
||||
};
|
||||
|
||||
static struct miscdevice pnx833x_wdt_miscdev = {
|
||||
.minor = WATCHDOG_MINOR,
|
||||
.name = "watchdog",
|
||||
.fops = &pnx833x_wdt_fops,
|
||||
};
|
||||
|
||||
static struct notifier_block pnx833x_wdt_notifier = {
|
||||
.notifier_call = pnx833x_wdt_notify_sys,
|
||||
};
|
||||
|
||||
static int __init watchdog_init(void)
|
||||
{
|
||||
int ret, cause;
|
||||
|
||||
/* Lets check the reason for the reset.*/
|
||||
cause = PNX833X_REG(PNX833X_RESET);
|
||||
/*If bit 31 is set then watchdog was cause of reset.*/
|
||||
if (cause & 0x80000000) {
|
||||
pr_info("The system was previously reset due to the watchdog firing - please investigate...\n");
|
||||
}
|
||||
|
||||
ret = register_reboot_notifier(&pnx833x_wdt_notifier);
|
||||
if (ret) {
|
||||
pr_err("cannot register reboot notifier (err=%d)\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = misc_register(&pnx833x_wdt_miscdev);
|
||||
if (ret) {
|
||||
pr_err("cannot register miscdev on minor=%d (err=%d)\n",
|
||||
WATCHDOG_MINOR, ret);
|
||||
unregister_reboot_notifier(&pnx833x_wdt_notifier);
|
||||
return ret;
|
||||
}
|
||||
|
||||
pr_info("Hardware Watchdog Timer for PNX833x: Version 0.1\n");
|
||||
|
||||
if (start_enabled)
|
||||
pnx833x_wdt_start();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __exit watchdog_exit(void)
|
||||
{
|
||||
misc_deregister(&pnx833x_wdt_miscdev);
|
||||
unregister_reboot_notifier(&pnx833x_wdt_notifier);
|
||||
}
|
||||
|
||||
module_init(watchdog_init);
|
||||
module_exit(watchdog_exit);
|
||||
|
||||
MODULE_AUTHOR("Daniel Laird/Andre McCurdy");
|
||||
MODULE_DESCRIPTION("Hardware Watchdog Device for PNX833x");
|
||||
MODULE_LICENSE("GPL");
|
||||
Загрузка…
Ссылка в новой задаче