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authorZhang, Yanmin <yanmin.zhang@intel.com>2006-07-31 11:21:33 +0400
committerGreg Kroah-Hartman <gregkh@suse.de>2006-09-27 04:43:53 +0400
commit6c2b374d74857e892080ee726184ec1d15e7d4e4 (patch)
treec107532c288bcede80e45ebc3e46292bfaf0cea2 /include/linux/pcieport_if.h
parent48408157ebf5b2c6dc1e04ba5d258012f6a7f356 (diff)
downloadlinux-6c2b374d74857e892080ee726184ec1d15e7d4e4.tar.xz
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 'include/linux/pcieport_if.h')
-rw-r--r--include/linux/pcieport_if.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/pcieport_if.h b/include/linux/pcieport_if.h
index b44e01a70914..6cd91e3f9820 100644
--- a/include/linux/pcieport_if.h
+++ b/include/linux/pcieport_if.h
@@ -62,6 +62,12 @@ struct pcie_port_service_driver {
int (*suspend) (struct pcie_device *dev, pm_message_t state);
int (*resume) (struct pcie_device *dev);
+ /* Service Error Recovery Handler */
+ struct pci_error_handlers *err_handler;
+
+ /* Link Reset Capability - AER service driver specific */
+ pci_ers_result_t (*reset_link) (struct pci_dev *dev);
+
const struct pcie_port_service_id *id_table;
struct device_driver driver;
};