1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2006 Intel Corp. 4 * Tom Long Nguyen ([email protected]) 5 * Zhang Yanmin ([email protected]) 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_cleanup_aer_uncorrect_error_status(struct pci_dev *dev); 48 int pci_cleanup_aer_error_status_regs(struct pci_dev *dev); 49 void pci_save_aer_state(struct pci_dev *dev); 50 void pci_restore_aer_state(struct pci_dev *dev); 51 #else 52 static inline int pci_enable_pcie_error_reporting(struct pci_dev *dev) 53 { 54 return -EINVAL; 55 } 56 static inline int pci_disable_pcie_error_reporting(struct pci_dev *dev) 57 { 58 return -EINVAL; 59 } 60 static inline int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev) 61 { 62 return -EINVAL; 63 } 64 static inline int pci_cleanup_aer_error_status_regs(struct pci_dev *dev) 65 { 66 return -EINVAL; 67 } 68 static inline void pci_save_aer_state(struct pci_dev *dev) {} 69 static inline void pci_restore_aer_state(struct pci_dev *dev) {} 70 #endif 71 72 void cper_print_aer(struct pci_dev *dev, int aer_severity, 73 struct aer_capability_regs *aer); 74 int cper_severity_to_aer(int cper_severity); 75 void 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