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
  18 struct pci_dev;
  19
  20 struct aer_header_log_regs {
  21         unsigned int dw0;
  22         unsigned int dw1;
  23         unsigned int dw2;
  24         unsigned int dw3;
  25 };
  26
  27 struct aer_capability_regs {
  28         u32 header;
  29         u32 uncor_status;
  30         u32 uncor_mask;
  31         u32 uncor_severity;
  32         u32 cor_status;
  33         u32 cor_mask;
  34         u32 cap_control;
  35         struct aer_header_log_regs header_log;
  36         u32 root_command;
  37         u32 root_status;
  38         u16 cor_err_source;
  39         u16 uncor_err_source;
  40 };
  41
  42 #if defined(CONFIG_PCIEAER)
  43 /* PCIe port driver needs this function to enable AER */
  44 int pci_enable_pcie_error_reporting(struct pci_dev *dev);
  45 int pci_disable_pcie_error_reporting(struct pci_dev *dev);
  46 int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev);
  47 int pci_cleanup_aer_error_status_regs(struct pci_dev *dev);
  48 #else
  49 static inline int pci_enable_pcie_error_reporting(struct pci_dev *dev)
  50 {
  51         return -EINVAL;
  52 }
  53 static inline int pci_disable_pcie_error_reporting(struct pci_dev *dev)
  54 {
  55         return -EINVAL;
  56 }
  57 static inline int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
  58 {
  59         return -EINVAL;
  60 }
  61 static inline int pci_cleanup_aer_error_status_regs(struct pci_dev *dev)
  62 {
  63         return -EINVAL;
  64 }
  65 #endif
  66
  67 void cper_print_aer(struct pci_dev *dev, int aer_severity,
  68                     struct aer_capability_regs *aer);
  69 int cper_severity_to_aer(int cper_severity);
  70 void 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