/* SPDX-License-Identifier: GPL-2.0+ */ #ifndef _linux_ar7wdt_h_ #define _linux_ar7wdt_h_ #define MAX_WDT_NAME_LEN 64 #define MAX_WDT_APPLS 63 /*--- letzte Position ist fuer init-Ueberwachung reserviert ---*/ #if defined(CONFIG_GRX5) || defined(CONFIG_MACH_PUMA7) #define WDT_DEFAULT_TIME 2 #elif defined(CONFIG_LANTIQ) || \ defined(CONFIG_ATH79) || defined(CONFIG_ARCH_IPQ40XX) #define WDT_DEFAULT_TIME 5 #elif defined(CONFIG_MACH_PUMA6) || defined(CONFIG_MACH_PUMA7) || \ defined(CONFIG_X86) || defined(CONFIG_MACH_BCM963138) || \ defined(CONFIG_BCM963178) || defined(CONFIG_ARCH_AVALANCHE) #define WDT_DEFAULT_TIME 10 #else #define WDT_DEFAULT_TIME 20 #endif struct _ar7wdt_command_queue { unsigned int rd, wr; unsigned char cmd[8]; }; struct _ar7wdt_appl_data { char Name[MAX_WDT_NAME_LEN + 1]; unsigned int default_time; struct timer_list Timer; unsigned int *pf_owner; struct fasync_struct *fasync; wait_queue_head_t wait_queue; unsigned int wait_condition; unsigned long req_jiffies; unsigned long avg_trigger; unsigned long pagefaults; unsigned int crashflag; unsigned int crashlog_read_forbidden; /*--- falls dieses flag gesetzt, so darf der crash-log nicht lesbar sein ---*/ unsigned int is_announce; pid_t pid; }; struct _ar7wdt_data { DECLARE_BITMAP(mask, MAX_WDT_APPLS); DECLARE_BITMAP(triggered, MAX_WDT_APPLS); DECLARE_BITMAP(requested, MAX_WDT_APPLS); DECLARE_BITMAP(states, MAX_WDT_APPLS); /*--- timer schon einmal erfolglos abgelaufen ---*/ unsigned long last_hw_wd_trigger; struct _ar7wdt_appl_data appl[MAX_WDT_APPLS + 1]; }; #if IS_ENABLED(CONFIG_AVM_WATCHDOG) extern int AVM_WATCHDOG_register(int handle, char *name, int len); extern int AVM_WATCHDOG_announce(int handle, char *name, int len); extern int AVM_WATCHDOG_release(int handle, char *name, int len); extern int AVM_WATCHDOG_set_timeout(int handle, char *name, int len); extern int AVM_WATCHDOG_trigger(int handle, char *name, int len); extern int AVM_WATCHDOG_disable(int handle, char *name, int len); extern int AVM_WATCHDOG_read(int handle, char *name, int len); extern int AVM_WATCHDOG_init_start(int handle, char *name, int len); extern int AVM_WATCHDOG_init_done(int handle, char *name, int len); extern int AVM_WATCHDOG_reboot(int handle); extern int AVM_WATCHDOG_poll(int handle); extern void AVM_WATCHDOG_ungraceful_release(int handle); extern void AVM_WATCHDOG_emergency_retrigger(void); /** * \brief * Wird im TFFS aufgerufen, wenn die current-Applikation einen Crash-Log schreibt * \retval 0 current in wdt-List gefunden * * \note * siehe https://wiki.avm.de/display/BA/Crashreport+Sendestrategien */ extern int AVM_WATCHDOG_Crashlog_notify(void); /** * \brief * Wird im TFFS-Treiber beim Zugriff auf /proc/avm/log_cr/crash aufgerufen. * Checkt ob ein Crashlog erzeugt und die entsprechende Applikation anschliessend * noch keinen Watchdog getriggert hat. Dann ist sie vermutlich abgestuerzt. * Dies soll verhindern, dass ein Crash-Log abgeschickt wird, obwohl * eigentlich noch ein panic-Log wegen Watchdogueberwachung folgt (verhindere aufgetrennte CRV's). * \retval: 1 - sperre Zugriff auf das Log * * \note * siehe https://wiki.avm.de/display/BA/Crashreport+Sendestrategien */ int AVM_WATCHDOG_Crashlog_read_forbidden(void); /** */ extern void AVM_WATCHDOG_init(void); extern void AVM_WATCHDOG_deinit(void); extern void AVM_WATCHDOG_OOM_init(void); extern struct fasync_struct **AVM_WATCHDOG_get_fasync_ptr(int handle); extern wait_queue_head_t *AVM_WATCHDOG_get_wait_queue(int handle); extern int AVM_WATCHDOG_wait_event_interruptible(int handle); extern int ar7wdt_no_reboot; /** */ void ar7wdt_hw_trigger(void); void ar7wdt_hw_reboot(void); void ar7wdt_hw_deinit(void); void ar7wdt_hw_init(void); int ar7wdt_hw_is_wdt_running(void); void ar7wdt_hw_secure_wdt_disable(void); #if defined(CONFIG_AVM_FASTIRQ) /** * der (pseudo-)nmi-handler ueber fastirq */ int register_nmi_notifier(struct notifier_block *nb); #endif /*--- #if defined(CONFIG_AVM_FASTIRQ) ---*/ #define ATH_GET_NMI_MODE int ath_get_nmi_mode(void); #else /* #if IS_ENABLED(CONFIG_AVM_WATCHDOG) */ static inline int AVM_WATCHDOG_register(int handle, char *name, int len) { return -ENODEV; } static inline int AVM_WATCHDOG_announce(int handle, char *name, int len) { return -ENODEV; } static inline int AVM_WATCHDOG_release(int handle, char *name, int len) { return -ENODEV; } static inline int AVM_WATCHDOG_set_timeout(int handle, char *name, int len) { return -ENODEV; } static inline int AVM_WATCHDOG_trigger(int handle, char *name, int len) { return -ENODEV; } static inline int AVM_WATCHDOG_disable(int handle, char *name, int len) { return -ENODEV; } static inline int AVM_WATCHDOG_read(int handle, char *name, int len) { return -ENODEV; } static inline int AVM_WATCHDOG_init_start(int handle, char *name, int len) { return -ENODEV; } static inline int AVM_WATCHDOG_init_done(int handle, char *name, int len) { return -ENODEV; } static inline int AVM_WATCHDOG_reboot(int handle) { return -ENODEV; } static inline int AVM_WATCHDOG_poll(int handle) { return -ENODEV; } static inline void AVM_WATCHDOG_ungraceful_release(int handle) {} static inline void AVM_WATCHDOG_emergency_retrigger(void) {} static inline int AVM_WATCHDOG_Crashlog_notify(void) { return -ENODEV; } static inline int AVM_WATCHDOG_Crashlog_read_forbidden(void) { return 0; } static inline void AVM_WATCHDOG_init(void) {} static inline void AVM_WATCHDOG_deinit(void) {} static inline void AVM_WATCHDOG_OOM_init(void) {} static inline struct fasync_struct **AVM_WATCHDOG_get_fasync_ptr(int handle) { return NULL; } static inline wait_queue_head_t *AVM_WATCHDOG_get_wait_queue(int handle) { return NULL; } static inline int AVM_WATCHDOG_wait_event_interruptible(int handle) { return -ENODEV; } #define ar7wdt_no_reboot 2 static inline void ar7wdt_hw_trigger(void) {} static inline void ar7wdt_hw_reboot(void) {} static inline void ar7wdt_hw_deinit(void) {} static inline void ar7wdt_hw_init(void) {} static inline int ar7wdt_hw_is_wdt_running(void) { return 0; } static inline void ar7wdt_hw_secure_wdt_disable(void) {} #if defined(CONFIG_AVM_FASTIRQ) static inline int register_nmi_notifier(struct notifier_block *nb) { return -ENODEV; } #endif /*--- #if defined(CONFIG_AVM_FASTIRQ) ---*/ #define ATH_GET_NMI_MODE static inline int ath_get_nmi_mode(void) { return 0; } #endif /* #if IS_ENABLED(CONFIG_AVM_WATCHDOG) */ #endif /*--- #ifndef _linux_ar7wdt_h_ ---*/