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author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-23 09:20:46 +0300 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-23 09:20:46 +0300 |
commit | 2e6e33bab6e1996a5dec9108fb467b52b841e7a8 (patch) | |
tree | 6b98b15c2fe7899cdeb2453589cdee00f7853492 /Documentation/powerpc/eeh-pci-error-recovery.txt | |
parent | b7ad6d75028d021362221d9b2db19fcff995c3f8 (diff) | |
parent | b88a0b1d5560cf1959c1565617e460a45c688a08 (diff) | |
download | linux-2e6e33bab6e1996a5dec9108fb467b52b841e7a8.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (78 commits)
[PATCH] powerpc: Add FSL SEC node to documentation
[PATCH] macintosh: tidy-up driver_register() return values
[PATCH] powerpc: tidy-up of_register_driver()/driver_register() return values
[PATCH] powerpc: via-pmu warning fix
[PATCH] macintosh: cleanup the use of i2c headers
[PATCH] powerpc: dont allow old RTC to be selected
[PATCH] powerpc: make powerbook_sleep_grackle static
[PATCH] powerpc: Fix warning in add_memory
[PATCH] powerpc: update mailing list addresses
[PATCH] powerpc: Remove calculation of io hole
[PATCH] powerpc: iseries: Add bootargs to /chosen
[PATCH] powerpc: iseries: Add /system-id, /model and /compatible
[PATCH] powerpc: Add strne2a() to convert a string from EBCDIC to ASCII
[PATCH] powerpc: iseries: Make more stuff static in platforms/iseries/mf.c
[PATCH] powerpc: iseries: Remove pointless iSeries_(restart|power_off|halt)
[PATCH] powerpc: iseries: mf related cleanups
[PATCH] powerpc: Replace platform_is_lpar() with a firmware feature
[PATCH] powerpc: trivial: Cleanup whitespace in cputable.h
[PATCH] powerpc: Remove unused iommu_off logic from pSeries_init_early()
[PATCH] powerpc: Unconfuse htab_bolt_mapping() callers
...
Diffstat (limited to 'Documentation/powerpc/eeh-pci-error-recovery.txt')
-rw-r--r-- | Documentation/powerpc/eeh-pci-error-recovery.txt | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/Documentation/powerpc/eeh-pci-error-recovery.txt b/Documentation/powerpc/eeh-pci-error-recovery.txt index 67a11a36270c..3764dd4b12cb 100644 --- a/Documentation/powerpc/eeh-pci-error-recovery.txt +++ b/Documentation/powerpc/eeh-pci-error-recovery.txt @@ -121,7 +121,7 @@ accomplished. EEH must be enabled in the PHB's very early during the boot process, and if a PCI slot is hot-plugged. The former is performed by -eeh_init() in arch/ppc64/kernel/eeh.c, and the later by +eeh_init() in arch/powerpc/platforms/pseries/eeh.c, and the later by drivers/pci/hotplug/pSeries_pci.c calling in to the eeh.c code. EEH must be enabled before a PCI scan of the device can proceed. Current Power5 hardware will not work unless EEH is enabled; @@ -133,7 +133,7 @@ error. Given an arbitrary address, the routine pci_get_device_by_addr() will find the pci device associated with that address (if any). -The default include/asm-ppc64/io.h macros readb(), inb(), insb(), +The default include/asm-powerpc/io.h macros readb(), inb(), insb(), etc. include a check to see if the i/o read returned all-0xff's. If so, these make a call to eeh_dn_check_failure(), which in turn asks the firmware if the all-ff's value is the sign of a true EEH @@ -143,11 +143,12 @@ seen in /proc/ppc64/eeh (subject to change). Normally, almost all of these occur during boot, when the PCI bus is scanned, where a large number of 0xff reads are part of the bus scan procedure. -If a frozen slot is detected, code in arch/ppc64/kernel/eeh.c will -print a stack trace to syslog (/var/log/messages). This stack trace -has proven to be very useful to device-driver authors for finding -out at what point the EEH error was detected, as the error itself -usually occurs slightly beforehand. +If a frozen slot is detected, code in +arch/powerpc/platforms/pseries/eeh.c will print a stack trace to +syslog (/var/log/messages). This stack trace has proven to be very +useful to device-driver authors for finding out at what point the EEH +error was detected, as the error itself usually occurs slightly +beforehand. Next, it uses the Linux kernel notifier chain/work queue mechanism to allow any interested parties to find out about the failure. Device |