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
  19 struct pci_dev;
  20
  21 struct pcie_tlp_log {
  22         u32 dw[4];
  23 };
  24
  25 struct aer_capability_regs {
  26         u32 header;
  27         u32 uncor_status;
  28         u32 uncor_mask;
  29         u32 uncor_severity;
  30         u32 cor_status;
  31         u32 cor_mask;
  32         u32 cap_control;
  33         struct pcie_tlp_log header_log;
  34         u32 root_command;
  35         u32 root_status;
  36         u16 cor_err_source;
  37         u16 uncor_err_source;
  38 };
  39
  40 int pcie_read_tlp_log(struct pci_dev *dev, int where, struct pcie_tlp_log *log);
  41
  42 #if defined(CONFIG_PCIEAER)
  43 int pci_aer_clear_nonfatal_status(struct pci_dev *dev);
  44 int pcie_aer_is_native(struct pci_dev *dev);
  45 #else
  46 static inline int pci_aer_clear_nonfatal_status(struct pci_dev *dev)
  47 {
  48         return -EINVAL;
  49 }
  50 static inline int pcie_aer_is_native(struct pci_dev *dev) { return 0; }
  51 #endif
  52
  53 void pci_print_aer(struct pci_dev *dev, int aer_severity,
  54                     struct aer_capability_regs *aer);
  55 int cper_severity_to_aer(int cper_severity);
  56 void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn,
  57                        int severity, struct aer_capability_regs *aer_regs);
  58 #endif //_AER_H_
  59