linux/Documentation/PCI
Hidetoshi Seto 89713422a7 PCI: aerdrv: introduce default_downstream_reset_link
I noticed that when I inject a fatal error to an endpoint via
aer-inject, aer_root_reset() is called as reset_link for a
downstream port at upstream of the endpoint:

  pcieport 0000:00:06.0: AER: Uncorrected (Fatal) error received: id=5401
   :
  pcieport 0000:52:02.0: Root Port link has been reset

It externally appears to be working, but internally issues some
accesses to PCI_ERR_ROOT_COMMAND/STATUS registers that is for
root port so not available on downstream port.

This patch introduces default_downstream_reset_link that is
a version of aer_root_reset() with no accesses to root port's
register. It is used for downstream ports that has no reset_link
function its specific.

This patch also updates related description in pcieaer-howto.txt.
Some minor fixes are included.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-05-11 12:01:38 -07:00
..
00-INDEX
MSI-HOWTO.txt PCI MSI: Add example request loop to MSI-HOWTO.txt 2009-03-20 11:35:04 -07:00
pci-error-recovery.txt PCI: document PCIe fundamental reset interfaces 2009-09-09 13:29:38 -07:00
pci-iov-howto.txt PCI: manual for SR-IOV user and driver developer 2009-03-20 10:48:33 -07:00
pci.txt
pcieaer-howto.txt PCI: aerdrv: introduce default_downstream_reset_link 2010-05-11 12:01:38 -07:00
PCIEBUS-HOWTO.txt