| /OK3568_Linux_fs/kernel/drivers/watchdog/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
4 # Watchdog device configuration
7 menuconfig WATCHDOG config
8 bool "Watchdog Timer Support"
11 character special file /dev/watchdog with major number 10 and minor
12 number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
16 on-line as fast as possible after a lock-up. There's both a watchdog
18 reboot the machine) and a driver for hardware watchdog boards, which
21 <file:Documentation/watchdog/watchdog-api.rst> in the kernel source.
23 The watchdog is usually used together with the watchdog daemon
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| H A D | intel_scu_watchdog.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Intel_SCU 0.2: An Intel SCU IOH Based Watchdog Device
5 * - AF82MP20 PCH
7 * Copyright (C) 2009-2010 Intel Corporation. All rights reserved.
17 #include <linux/watchdog.h>
35 #include <asm/intel-mid.h>
48 "Watchdog timer margin"
56 "Default Watchdog timer setting"
61 /* After watchdog device is closed, check force_boot. If:
62 * force_boot == 0, then force boot on next watchdog interrupt after close,
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| H A D | via_wdt.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * VIA Chipset Watchdog Driver
8 * Timer code by Wim Van Sebroeck <wim@iguana.be>
10 * Caveat: PnP must be enabled in BIOS to allow full access to watchdog
11 * control registers. If not, the watchdog must be configured in BIOS manually.
21 #include <linux/timer.h>
22 #include <linux/watchdog.h>
26 #define VIA_WDT_CONF 0xec /* watchdog enable state */
29 #define VIA_WDT_CONF_ENABLE 0x01 /* 1: enable watchdog */
30 #define VIA_WDT_CONF_MMIO 0x02 /* 1: enable watchdog MMIO */
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| H A D | smsc37b787_wdt.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * SMsC 37B787 Watchdog Timer driver for Linux 2.6.x.x
9 * any of this software. This material is provided "AS-IS" in
12 * (C) Copyright 2003-2006 Sven Anders <anders@anduras.de>
15 * 2003 - Created version 1.0 for Linux 2.4.x.
16 * 2006 - Ported to Linux 2.6, added nowayout and MAGICCLOSE
21 * A Watchdog Timer (WDT) is a hardware circuit that can
26 * via the /dev/watchdog special device file that userspace is
28 * occurs, the driver will usually tell the hardware watchdog
29 * that everything is in order, and that the watchdog should wait
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| H A D | alim1535_wdt.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Watchdog for the 7101 PMU version found in the ALi M1535 chipsets
12 #include <linux/watchdog.h>
36 "Watchdog timeout in seconds. (0 < timeout < 18000, default="
42 "Watchdog cannot be stopped once started (default="
46 * ali_start - start watchdog countdown
48 * Starts the timer running providing the timer has a counter
67 * ali_stop - stop the timer countdown
69 * Stop the ALi watchdog countdown
87 * ali_keepalive - send a keepalive to the watchdog
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| H A D | pika_wdt.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * PIKA FPGA based Watchdog Timer
19 #include <linux/watchdog.h>
22 #include <linux/timer.h>
29 #define DRV_NAME "PIKA-WDT"
34 /* Timer heartbeat (500ms) */
41 MODULE_PARM_DESC(heartbeat, "Watchdog heartbeats in seconds. "
46 MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started "
51 unsigned long next_heartbeat; /* the next_heartbeat for the timer */
55 struct timer_list timer; /* The timer that pings the watchdog */ member
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| H A D | sc520_wdt.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * AMD Elan SC520 processor Watchdog Timer driver
9 * any of this software. This material is provided "AS-IS" in
13 * 9/27 - 2001 [Initial release]
16 * - Fixed formatting
17 * - Removed debug printks
18 * - Fixed SMP built kernel deadlock
19 * - Switched to private locks not lock_kernel
20 * - Used ioremap/writew/readw
21 * - Added NOWAYOUT support
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| H A D | at91sam9_wdt.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * Watchdog driver for Atmel AT91SAM9x processors.
5 * Copyright (C) 2008 Renaud CERRATO r.cerrato@til-technologies.fr
10 * The Watchdog Timer Mode Register can be only written to once. If the
28 #include <linux/watchdog.h>
30 #include <linux/timer.h>
38 #define DRV_NAME "AT91SAM9 Watchdog"
41 readl_relaxed((wdt)->base + (field))
43 writel_relaxed((val), (wdt)->base + (field))
45 /* AT91SAM9 watchdog runs a 12bit counter @ 256Hz,
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| H A D | alim7101_wdt.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * ALi M7101 PMU Computer Watchdog Timer driver
6 * and the Cobalt kernel WDT timer driver by Tim Hockin
12 * drivers in that the driver will ping the watchdog by itself,
18 * Aug 23, 2004 - Added use_gpio module parameter for use on revision a1d PMUs
20 * -- Mike Waychison <michael.waychison@sun.com>
28 #include <linux/timer.h>
30 #include <linux/watchdog.h>
51 * If we reset the watchdog every ~250ms we should be safe. */
58 * char to /dev/watchdog every 30 seconds.
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| H A D | cpwd.c | 1 // SPDX-License-Identifier: GPL-2.0-only
2 /* cpwd.c - driver implementation for hardware watchdog
5 * This device supports both the generic Linux watchdog
6 * interface and Solaris-compatible ioctls as best it is
11 * timer interrupts. We use a timer to periodically
28 #include <linux/timer.h>
38 #include <asm/watchdog.h>
42 #define WD_OBPNAME "watchdog"
43 #define WD_BADMODEL "SUNW,501-5336"
60 #define WD_STAT_INIT 0x01 /* Watchdog timer is initialized */
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| H A D | sbc60xxwdt.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * 60xx Single Board Computer Watchdog Timer driver for Linux 2.2.x
8 * any of this software. This material is provided "AS-IS" in
13 * 12/4 - 2000 [Initial revision]
14 * 25/4 - 2000 Added /dev/watchdog support
15 * 09/5 - 2001 [smj@oro.net] fixed fop_write to "return 1"
17 * 12/4 - 2002 [rob@osinvestor.com] eliminate fop_read
28 * 09/8 - 2003 [wim@iguana.be] cleanup of trailing spaces
39 * *) The driver will ping the watchdog by itself, because this
50 #include <linux/timer.h>
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| H A D | pnx833x_wdt.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * PNX833x Hardware Watchdog Driver
8 * Heavily based upon - IndyDog 0.3
9 * A Hardware Watchdog Device for SGI IP22
25 #include <linux/watchdog.h>
29 #include <asm/mach-pnx833x/pnx833x.h>
32 #define WATCHDOG_COUNT_FREQUENCY 68000000U /* Watchdog counts at 68MHZ. */
51 MODULE_PARM_DESC(timeout, "Watchdog timeout in Mhz. (68Mhz clock), default="
56 MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
62 MODULE_PARM_DESC(start_enabled, "Watchdog is started on module insertion "
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| H A D | w83877f_wdt.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * W83877F Computer Watchdog Timer driver
9 * any of this software. This material is provided "AS-IS" in
14 * 4/19 - 2001 [Initial revision]
15 * 9/27 - 2001 Added spinlocking
16 * 4/12 - 2002 [rob@osinvestor.com] Eliminate extra comments
27 * 09/8 - 2003 [wim@iguana.be] cleanup of trailing spaces
35 * drivers in that the driver will ping the watchdog by itself,
46 #include <linux/timer.h>
49 #include <linux/watchdog.h>
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| H A D | it8712f_wdt.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * IT8712F "Smart Guardian" Watchdog support
5 * Copyright (c) 2006-2007 Jorge Boncompte - DTI2 <jorge@dti2.net>
9 * drivers/char/watchdog/scx200_wdt.c
11 * IT8712F EC-LPC I/O Preliminary Specification 0.8.2
12 * IT8712F EC-LPC I/O Preliminary Specification 0.9.3
16 * software is provided AS-IS with no warranties.
25 #include <linux/watchdog.h>
37 MODULE_AUTHOR("Jorge Boncompte - DTI2 <jorge@dti2.net>");
38 MODULE_DESCRIPTION("IT8712F Watchdog Driver");
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| H A D | sb_wdog.c | 2 * Watchdog driver for SiByte SB1 SoCs
16 * It is a simple timer, and there is an interrupt that is raised the
17 * first time the timer expires. The second time it expires, the chip
26 * The timer takes 23 bits of a 64 bit register (?) as a count value,
30 * This watchdog borrows some user semantics from the softdog driver,
31 * in that if you close the fd, it leaves the watchdog running, unless
33 * the watchdog when you close the fd like some other drivers.
35 * Based on various other watchdog drivers, which are probably all
55 #include <linux/watchdog.h>
66 * set the initial count value of a timer
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| H A D | sp5100_tco.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * sp5100_tco : TCO timer driver for sp5100 chipsets
13 * AMD Publication 45482 "AMD SB800-Series Southbridges Register
16 * for AMD Family 16h Models 00h-0Fh Processors"
19 * for AMD Family 16h Models 30h-3Fh Processors"
20 * AMD Publication 55570-B1-PUB "Processor Programming Reference (PPR)
23 * AMD Publication 55772-A1-PUB "Processor Programming Reference (PPR)
42 #include <linux/watchdog.h>
46 #define TCO_DRIVER_NAME "sp5100-tco"
60 /* the watchdog platform device */
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| H A D | sa1100_wdt.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * Watchdog driver for the SA11x0/PXA2xx
10 * "AS-IS" and at no charge.
26 #include <linux/watchdog.h>
34 #include <mach/regs-ost.h>
51 return -EBUSY; in sa1100dog_open()
53 /* Activate SA1100 Watchdog timer */ in sa1100dog_open()
62 * The watchdog cannot be disabled.
65 * clearing OIER[E3] would prevent the watchdog timing out but this
70 pr_crit("Device closed - timer will not stop\n"); in sa1100dog_release()
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| H A D | lpc18xx_wdt.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * NXP LPC18xx Watchdog Timer (WDT)
8 * -----
9 * The Watchdog consists of a fixed divide-by-4 clock pre-scaler and a 24-bit
18 #include <linux/watchdog.h>
35 /* Clock pre-scaler */
43 MODULE_PARM_DESC(heartbeat, "Watchdog heartbeats in seconds (default="
48 MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
57 struct timer_list timer; member
70 spin_lock_irqsave(&lpc18xx_wdt->lock, flags); in lpc18xx_wdt_feed()
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| /OK3568_Linux_fs/kernel/Documentation/watchdog/ |
| H A D | watchdog-kernel-api.rst | 2 The Linux WatchDog Timer Driver Core kernel API
5 Last reviewed: 12-Feb-2013
10 ------------
11 This document does not describe what a WatchDog Timer (WDT) Driver or Device is.
13 with a WatchDog Timer. If you want to know this then please read the following
14 file: Documentation/watchdog/watchdog-api.rst .
17 WatchDog Timer Drivers that want to use the WatchDog Timer Driver Core
20 a watchdog timer driver then only needs to provide the different routines
21 (operations) that control the watchdog timer (WDT).
24 -------
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| H A D | hpwdt.rst | 2 HPE iLO NMI Watchdog Driver
11 The HPE iLO NMI Watchdog driver is a kernel module that provides basic
12 watchdog functionality and handler for the iLO "Generate NMI to System"
18 Watchdog functionality is enabled like any other common watchdog driver. That
19 is, an application needs to be started that kicks off the watchdog timer. A
20 basic application exists in tools/testing/selftests/watchdog/ named
21 watchdog-test.c. Simply compile the C file and kick it off. If the system
22 gets into a bad state and hangs, the HPE ProLiant iLO timer register will
29 soft_margin allows the user to set the watchdog timer value.
32 pretimeout allows the user to set the watchdog pretimeout value.
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| /OK3568_Linux_fs/kernel/drivers/gpu/arm/bifrost/hwcnt/ |
| H A D | mali_kbase_hwcnt_watchdog_if.h | 1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
4 * (C) COPYRIGHT 2021-2022 ARM Limited. All rights reserved.
18 * http://www.gnu.org/licenses/gpl-2.0.html.
23 * Virtual interface for hardware counter watchdog.
32 * Opaque structure of information used to create a watchdog timer interface.
37 * typedef kbase_hwcnt_watchdog_callback_fn - Callback function when watchdog timer is done
44 * typedef kbase_hwcnt_watchdog_enable_fn - Enable watchdog timer
46 * @timer: Non-NULL pointer to a watchdog timer interface context
47 * @period_ms: Period in milliseconds of the watchdog timer
48 * @callback: Non-NULL pointer to a watchdog callback function
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| /OK3568_Linux_fs/kernel/drivers/gpu/arm/bifrost/hwcnt/backend/ |
| H A D | mali_kbase_hwcnt_backend_jm_watchdog.c | 1 // SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
4 * (C) COPYRIGHT 2021-2022 ARM Limited. All rights reserved.
18 * http://www.gnu.org/licenses/gpl-2.0.html.
32 /* Backend watch dog timer interval in milliseconds: 18 seconds. */
35 /* Backend watch dog timer interval in milliseconds: 1 second. */
40 * IDLE_BUFFER_EMPTY -> USER_DUMPING_BUFFER_EMPTY on dump_request.
41 * IDLE_BUFFER_EMPTY -> TIMER_DUMPING after
45 * IDLE_BUFFER_FULL -> USER_DUMPING_BUFFER_FULL on dump_request.
46 * IDLE_BUFFER_FULL -> TIMER_DUMPING after
50 * IDLE_BUFFER_FULL -> IDLE_BUFFER_EMPTY on dump_disable, upon discarding undumped
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| /OK3568_Linux_fs/kernel/Documentation/devicetree/bindings/timer/ |
| H A D | arm,twd.txt | 1 * ARM Timer Watchdog
3 ARM 11MP, Cortex-A5 and Cortex-A9 are often associated with a per-core
4 Timer-Watchdog (aka TWD), which provides both a per-cpu local timer
5 and watchdog.
7 The TWD is usually attached to a GIC to deliver its two per-processor
10 ** Timer node required properties:
12 - compatible : Should be one of:
13 "arm,cortex-a9-twd-timer"
14 "arm,cortex-a5-twd-timer"
15 "arm,arm11mp-twd-timer"
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| /OK3568_Linux_fs/kernel/Documentation/devicetree/bindings/watchdog/ |
| H A D | snps,dw-wdt.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/watchdog/snps,dw-wdt.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Synopsys Designware Watchdog Timer
10 - $ref: "watchdog.yaml#"
13 - Jamie Iles <jamie@jamieiles.com>
17 const: snps,dw-wdt
23 description: DW Watchdog pre-timeout interrupt
29 - description: Watchdog timer reference clock
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| /OK3568_Linux_fs/kernel/arch/sparc/include/uapi/asm/ |
| H A D | watchdog.h | 1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
4 * watchdog - Driver interface for the hardware watchdog timers
14 #include <linux/watchdog.h>
16 /* Solaris compatibility ioctls--
17 * Ref. <linux/watchdog.h> for standard linux watchdog ioctls
19 #define WIOCSTART _IO (WATCHDOG_IOCTL_BASE, 10) /* Start Timer */
20 #define WIOCSTOP _IO (WATCHDOG_IOCTL_BASE, 11) /* Stop Timer */
21 #define WIOCGSTAT _IOR(WATCHDOG_IOCTL_BASE, 12, int)/* Get Timer Status */
25 #define WD_FREERUN 0x01 /* timer is running, interrupts disabled */
26 #define WD_EXPIRED 0x02 /* timer has expired */
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