VIASIO(4) - Device Drivers Manual # VIASIO(4) - Device Drivers Manual
NAME # viasio - VIA VT1211 LPC Super I/O
SYNOPSIS # viasio* at isa? port 0x2e flags 0x0000 viasio* at isa? port 0x4e flags 0x0000
DESCRIPTION # The viasio driver provides support for the VIA VT1211 LPC Super I/O IC. The hardware monitoring and watchdog timer functions are currently supported.
The hardware monitor provides hardware monitoring capabilities to be used with the sysctl(8) interface.
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WATCHDOG(4) - Device Drivers Manual # WATCHDOG(4) - Device Drivers Manual
NAME # watchdog - hardware timers/counters for quick crash recovery
DESCRIPTION # Hardware watchdog timers are devices that reboot the machine when it hangs. The kernel continually resets the watchdog clock on a regular basis. Thus, if the kernel halts, the clock will time out and reset the machine. Watchdog timers may be configured to be reset from userland to cause a reboot if process scheduling fails; see watchdogd(8) for further information.
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WATCHDOGD(8) - System Manager’s Manual # WATCHDOGD(8) - System Manager’s Manual
NAME # watchdogd - watchdog timer retrigger daemon
SYNOPSIS # watchdogd [-dnq] [-i interval] [-p period]
DESCRIPTION # watchdogd is a daemon to activate and periodically retrigger the watchdog(4) timer device from userland. watchdogd is designed to work in high load environments, where other methods (such as a shell script invoking sysctl(8)) would involve too much overhead.
The basic premise is that after every interval seconds, watchdogd resets the hardware timer to period.
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WDT(4) - Device Drivers Manual (i386) # WDT(4) - Device Drivers Manual (i386)
NAME # wdt - ICS PCI-WDT500/501 watchdog timer device
SYNOPSIS # wdt0 at pci?
DESCRIPTION # The wdt driver provides support for the Industrial Computer Source PCI-WDT500 and PCI-WDT501 boards.
For PCI-WDT500 boards, basic watchdog timer functionality is supported. For PCI-WDT501 boards, the onboard buzzer will sound when the watchdog counter expires. The sensors are not yet supported.
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