6c2b374d74
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>
24 lines
798 B
C
24 lines
798 B
C
/*
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* Copyright (C) 2006 Intel Corp.
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* Tom Long Nguyen (tom.l.nguyen@intel.com)
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* Zhang Yanmin (yanmin.zhang@intel.com)
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*/
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#ifndef _AER_H_
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#define _AER_H_
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#if defined(CONFIG_PCIEAER)
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/* pci-e port driver needs this function to enable aer */
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extern int pci_enable_pcie_error_reporting(struct pci_dev *dev);
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extern int pci_find_aer_capability(struct pci_dev *dev);
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extern int pci_disable_pcie_error_reporting(struct pci_dev *dev);
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extern int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev);
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#else
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#define pci_enable_pcie_error_reporting(dev) do { } while (0)
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#define pci_find_aer_capability(dev) do { } while (0)
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#define pci_disable_pcie_error_reporting(dev) do { } while (0)
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#define pci_cleanup_aer_uncorrect_error_status(dev) do { } while (0)
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#endif
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#endif //_AER_H_
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