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author | Zhang, Yanmin <yanmin.zhang@intel.com> | 2006-07-31 15:21:33 +0800 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-09-26 17:43:53 -0700 |
commit | 6c2b374d74857e892080ee726184ec1d15e7d4e4 (patch) | |
tree | c107532c288bcede80e45ebc3e46292bfaf0cea2 /lib | |
parent | 48408157ebf5b2c6dc1e04ba5d258012f6a7f356 (diff) |
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>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions