LXR linux/include/linux/aer.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Copyright (C) 2006 Intel Corp.
   4 *     Tom Long Nguyen (tom.l.nguyen@intel.com)
   5 *     Zhang Yanmin (yanmin.zhang@intel.com)
   6 */
   7
   8#ifndef _AER_H_
   9#define _AER_H_
  10
  11#include <linux/errno.h>
  12#include <linux/types.h>
  13
  14#define AER_NONFATAL                    0
  15#define AER_FATAL                       1
  16#define AER_CORRECTABLE                 2
  17#define DPC_FATAL                       3
  18
  19struct pci_dev;
  20
  21struct aer_header_log_regs {
  22        unsigned int dw0;
  23        unsigned int dw1;
  24        unsigned int dw2;
  25        unsigned int dw3;
  26};
  27
  28struct aer_capability_regs {
  29        u32 header;
  30        u32 uncor_status;
  31        u32 uncor_mask;
  32        u32 uncor_severity;
  33        u32 cor_status;
  34        u32 cor_mask;
  35        u32 cap_control;
  36        struct aer_header_log_regs header_log;
  37        u32 root_command;
  38        u32 root_status;
  39        u16 cor_err_source;
  40        u16 uncor_err_source;
  41};
  42
  43#if defined(CONFIG_PCIEAER)
  44/* PCIe port driver needs this function to enable AER */
  45int pci_enable_pcie_error_reporting(struct pci_dev *dev);
  46int pci_disable_pcie_error_reporting(struct pci_dev *dev);
  47int pci_aer_clear_nonfatal_status(struct pci_dev *dev);
  48void pci_save_aer_state(struct pci_dev *dev);
  49void pci_restore_aer_state(struct pci_dev *dev);
  50#else
  51static inline int pci_enable_pcie_error_reporting(struct pci_dev *dev)
  52{
  53        return -EINVAL;
  54}
  55static inline int pci_disable_pcie_error_reporting(struct pci_dev *dev)
  56{
  57        return -EINVAL;
  58}
  59static inline int pci_aer_clear_nonfatal_status(struct pci_dev *dev)
  60{
  61        return -EINVAL;
  62}
  63static inline void pci_save_aer_state(struct pci_dev *dev) {}
  64static inline void pci_restore_aer_state(struct pci_dev *dev) {}
  65#endif
  66
  67void cper_print_aer(struct pci_dev *dev, int aer_severity,
  68                    struct aer_capability_regs *aer);
  69int cper_severity_to_aer(int cper_severity);
  70void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn,
  71                       int severity, struct aer_capability_regs *aer_regs);
  72#endif //_AER_H_
  73
  74