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 74