]> err.no Git - linux-2.6/commit
PCI-Express AER implemetation: AER core and aerdriver
authorZhang, Yanmin <yanmin.zhang@intel.com>
Mon, 31 Jul 2006 07:21:33 +0000 (15:21 +0800)
committerGreg Kroah-Hartman <gregkh@suse.de>
Wed, 27 Sep 2006 00:43:53 +0000 (17:43 -0700)
commit6c2b374d74857e892080ee726184ec1d15e7d4e4
treec107532c288bcede80e45ebc3e46292bfaf0cea2
parent48408157ebf5b2c6dc1e04ba5d258012f6a7f356
PCI-Express AER implemetation: AER core and aerdriver

Patch 3 implements the core part of PCI-Express AER and aerdrv
port service driver.

When a root port service device is probed, the aerdrv will call
request_irq to register irq handler for AER error interrupt.

When a device sends an PCI-Express error message to the root port,
the root port will trigger an interrupt, by either MSI or IO-APIC,
then kernel would run the irq handler. The handler collects root
error status register and schedules a work. The work will call
the core part to process the error based on its type
(Correctable/non-fatal/fatal).

As for Correctable errors, the patch chooses to just clear the correctable
error status register of the device.

As for the non-fatal error, the patch follows generic PCI error handler
rules to call the error callback functions of the endpoint's driver. If
the device is a bridge, the patch chooses to broadcast the error to
downstream devices.

As for the fatal error, the patch resets the pci-express link and
follows generic PCI error handler rules to call the error callback
functions of the endpoint's driver. If the device is a bridge, the patch
chooses to broadcast the error to downstream devices.

Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/pci/pcie/Kconfig
drivers/pci/pcie/Makefile
drivers/pci/pcie/aer/Kconfig [new file with mode: 0644]
drivers/pci/pcie/aer/Makefile [new file with mode: 0644]
drivers/pci/pcie/aer/aerdrv.c [new file with mode: 0644]
drivers/pci/pcie/aer/aerdrv.h [new file with mode: 0644]
drivers/pci/pcie/aer/aerdrv_acpi.c [new file with mode: 0644]
drivers/pci/pcie/aer/aerdrv_core.c [new file with mode: 0644]
drivers/pci/pcie/aer/aerdrv_errprint.c [new file with mode: 0644]
include/linux/aer.h [new file with mode: 0644]
include/linux/pcieport_if.h