b09803b5e5
Our goal is to handle ERR_FATAL errors similarly, whether they are reported via AER or via DPC. A previous commit changed AER so it handles ERR_FATAL by calling driver .remove() methods and resetting the Link. DPC already does that (although the Link reset is done automatically by hardware and happens before we call the driver .remove() methods). Restructure the DPC code so it calls the same pcie_do_fatal_recovery() interface used by AER. This makes it clearer that we want to use the same path. Implement the .reset_link() method used by pcie_do_fatal_recovery(). For DPC, the actual reset is done automatically by hardware, so we really only have to wait for the Link to be inactive, then release the Port from DPC. Signed-off-by: Oza Pawandeep <poza@codeaurora.org> [bhelgaas: changelog, DPC_FATAL is not a bitfield, can be sequential] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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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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#include <linux/errno.h>
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#include <linux/types.h>
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#define AER_NONFATAL 0
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#define AER_FATAL 1
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#define AER_CORRECTABLE 2
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#define DPC_FATAL 3
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struct pci_dev;
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struct aer_header_log_regs {
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unsigned int dw0;
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unsigned int dw1;
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unsigned int dw2;
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unsigned int dw3;
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};
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struct aer_capability_regs {
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u32 header;
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u32 uncor_status;
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u32 uncor_mask;
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u32 uncor_severity;
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u32 cor_status;
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u32 cor_mask;
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u32 cap_control;
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struct aer_header_log_regs header_log;
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u32 root_command;
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u32 root_status;
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u16 cor_err_source;
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u16 uncor_err_source;
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};
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#if defined(CONFIG_PCIEAER)
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/* PCIe port driver needs this function to enable AER */
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int pci_enable_pcie_error_reporting(struct pci_dev *dev);
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int pci_disable_pcie_error_reporting(struct pci_dev *dev);
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int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev);
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int pci_cleanup_aer_error_status_regs(struct pci_dev *dev);
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#else
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static inline int pci_enable_pcie_error_reporting(struct pci_dev *dev)
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{
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return -EINVAL;
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}
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static inline int pci_disable_pcie_error_reporting(struct pci_dev *dev)
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{
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return -EINVAL;
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}
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static inline int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
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{
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return -EINVAL;
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}
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static inline int pci_cleanup_aer_error_status_regs(struct pci_dev *dev)
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{
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return -EINVAL;
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}
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#endif
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void cper_print_aer(struct pci_dev *dev, int aer_severity,
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struct aer_capability_regs *aer);
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int cper_severity_to_aer(int cper_severity);
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void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn,
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int severity, struct aer_capability_regs *aer_regs);
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#endif //_AER_H_
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