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_cleanup_aer_uncorrect_error_status(struct pci_dev *dev); 48int pci_cleanup_aer_error_status_regs(struct pci_dev *dev); 49void pci_save_aer_state(struct pci_dev *dev); 50void pci_restore_aer_state(struct pci_dev *dev); 51#else 52static inline int pci_enable_pcie_error_reporting(struct pci_dev *dev) 53{ 54 return -EINVAL; 55} 56static inline int pci_disable_pcie_error_reporting(struct pci_dev *dev) 57{ 58 return -EINVAL; 59} 60static inline int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev) 61{ 62 return -EINVAL; 63} 64static inline int pci_cleanup_aer_error_status_regs(struct pci_dev *dev) 65{ 66 return -EINVAL; 67} 68static inline void pci_save_aer_state(struct pci_dev *dev) {} 69static inline void pci_restore_aer_state(struct pci_dev *dev) {} 70#endif 71 72void cper_print_aer(struct pci_dev *dev, int aer_severity, 73 struct aer_capability_regs *aer); 74int cper_severity_to_aer(int cper_severity); 75void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn, 76 int severity, struct aer_capability_regs *aer_regs); 77#endif //_AER_H_ 78 79