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 aer_header_log_regs {
  22         unsigned int dw0;
  23         unsigned int dw1;
  24         unsigned int dw2;
  25         unsigned int dw3;
  26 };
  27
  28 struct 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 */
  45 int pci_enable_pcie_error_reporting(struct pci_dev *dev);
  46 int pci_disable_pcie_error_reporting(struct pci_dev *dev);
  47 int pci_aer_clear_nonfatal_status(struct pci_dev *dev);
  48 void pci_save_aer_state(struct pci_dev *dev);
  49 void pci_restore_aer_state(struct pci_dev *dev);
  50 #else
  51 static inline int pci_enable_pcie_error_reporting(struct pci_dev *dev)
  52 {
  53         return -EINVAL;
  54 }
  55 static inline int pci_disable_pcie_error_reporting(struct pci_dev *dev)
  56 {
  57         return -EINVAL;
  58 }
  59 static inline int pci_aer_clear_nonfatal_status(struct pci_dev *dev)
  60 {
  61         return -EINVAL;
  62 }
  63 static inline void pci_save_aer_state(struct pci_dev *dev) {}
  64 static inline void pci_restore_aer_state(struct pci_dev *dev) {}
  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