Commit a654e5ee authored by Huang Ying's avatar Huang Ying Committed by Len Brown
Browse files

ACPI, APEI, GHES: Add PCIe AER recovery support 



aer_recover_queue() is called when recoverable PCIe AER errors are
notified by firmware to do the recovery work.

Signed-off-by: default avatarHuang Ying <ying.huang@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 04c25997

drivers/acpi/apei/ghes.c

+23 −0
Original line number Diff line number Diff line
@@ -45,6 +45,8 @@ 
#include <linux/irq_work.h>

#include <linux/llist.h>

#include <linux/genalloc.h>

#include <linux/pci.h>

#include <linux/aer.h>

#include <acpi/apei.h>

#include <acpi/atomicio.h>

#include <acpi/hed.h>
@@ -476,6 +478,27 @@ static void ghes_do_proc(const struct acpi_hest_generic_status *estatus) 
			}

#endif

		}

#ifdef CONFIG_ACPI_APEI_PCIEAER

		else if (!uuid_le_cmp(*(uuid_le *)gdata->section_type,

				      CPER_SEC_PCIE)) {

			struct cper_sec_pcie *pcie_err;

			pcie_err = (struct cper_sec_pcie *)(gdata+1);

			if (sev == GHES_SEV_RECOVERABLE &&

			    sec_sev == GHES_SEV_RECOVERABLE &&

			    pcie_err->validation_bits & CPER_PCIE_VALID_DEVICE_ID &&

			    pcie_err->validation_bits & CPER_PCIE_VALID_AER_INFO) {

				unsigned int devfn;

				int aer_severity;

				devfn = PCI_DEVFN(pcie_err->device_id.device,

						  pcie_err->device_id.function);

				aer_severity = cper_severity_to_aer(sev);

				aer_recover_queue(pcie_err->device_id.segment,

						  pcie_err->device_id.bus,

						  devfn, aer_severity);

			}



		}

#endif

	}

}