Red Hat Bugzilla – Bug 228623
FR: i8xx_tco support for Intel 6300ESB Watchdog timer
Last modified: 2013-03-06 00:59:48 EST
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Description of problem:
This feature request is about adding support for 8086:25ab PCI device (Intel 6300ESB Watchdog Timer) to i8xx_tco module. I found simple patch for that, applied it and recompiled the kernel. It works. The patch is at http://marc.theaimsgroup.com/?l=linux-kernel&m=110711973917746&w=2
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. modprobe i8xx_tco on any Intel 6300ESB mobo (Tyan S2198 in my case)
FATAL: Error inserting i8xx_tco (...): No such device
Kernel module loads and /dev/watchdog gets created
ok i've added just the PCI id to this driver, can you please try the test
kernels at: http://people.redhat.com/~jbaron/bz228623/ and let me know how they
Installed kernel-2.6.9-49.watch.1.EL and loaded "modprobe i8xx_tco" on Tyan
S2198 mobo. Dmesg reports:
"i8xx TCO timer: initialized (0x0460). heartbeat=30 sec (nowayout=0)"
Ran "echo '1' >/dev/watchdog; while ((1)); do date; sleep 1; done"
Hardware reset happens in 60 seconds, not in 30 as I expected. Maybe it takes 2
missing heartbeats? In any case, thanks, it works for me.
This request was evaluated by Red Hat Kernel Team for inclusion in a Red
Hat Enterprise Linux maintenance release, and has moved to bugzilla
committed in stream U6 build 55.10. A test kernel with this patch is available
added to RHEL4.6 release notes under "Kernel-Related Updates":
Intel 6300ESB Watchdog timer is now supported
please advise if any revisions are necessary. thanks!
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.