37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
#ifndef __WATCHDOG_H__
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#define __WATCHDOG_H__
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#include "kernel.h"
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#include "arch_watchdog.h"
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extern int watchdog_enabled; /* if set to non-zero the watch dog is enabled */
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extern unsigned watchdog_local_timer_ticks; /* is timer still ticking? */
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/*
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* as the implementation is not only architecture dependent but like in x86 case
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* very much model specific, we need to keep a collection of methods that
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* implement it in runtime after the correct arch/model was detected
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*/
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typedef void (* arch_watchdog_method_t)(int);
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struct arch_watchdog {
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arch_watchdog_method_t init; /* initial setup */
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arch_watchdog_method_t reinit; /* reinitialization after a tick */
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unsigned resetval;
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};
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extern struct arch_watchdog *watchdog;
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/* let the arch code do whatever it needs to setup the watchdog */
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int arch_watchdog_init(void);
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/* if the watchdog detects lockup, let the arch code to handle it */
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void arch_watchdog_lockup(const struct nmi_frame * frame);
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/* generic NMI handler. Takes one agument which points to where the arch
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* specific low level handler dumped CPU information and can be inspected by the
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* arch specific code of the watchdog implementaion */
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void nmi_watchdog_handler(struct nmi_frame * frame);
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#endif /* __WATCHDOG_H__ */
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