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 /* 20 * AER and DPC capabilities TLP Logging register sizes (PCIe r6.2, sec 7.8.4 21 * & 7.9.14). 22 */ 23 #define PCIE_STD_NUM_TLP_HEADERLOG 4 24 #define PCIE_STD_MAX_TLP_PREFIXLOG 4 25 #define PCIE_STD_MAX_TLP_HEADERLOG (PCIE_STD_NUM_TLP_HEADERLOG + 10) 26 27 struct pci_dev; 28 29 struct pcie_tlp_log { 30 union { 31 u32 dw[PCIE_STD_MAX_TLP_HEADERLOG]; 32 struct { 33 u32 _do_not_use[PCIE_STD_NUM_TLP_HEADERLOG]; 34 u32 prefix[PCIE_STD_MAX_TLP_PREFIXLOG]; 35 }; 36 }; 37 u8 header_len; /* Length of the Logged TLP Header in DWORDs */ 38 bool flit; /* TLP was logged when in Flit mode */ 39 }; 40 41 struct aer_capability_regs { 42 u32 header; 43 u32 uncor_status; 44 u32 uncor_mask; 45 u32 uncor_severity; 46 u32 cor_status; 47 u32 cor_mask; 48 u32 cap_control; 49 struct pcie_tlp_log header_log; 50 u32 root_command; 51 u32 root_status; 52 u16 cor_err_source; 53 u16 uncor_err_source; 54 }; 55 56 #if defined(CONFIG_PCIEAER) 57 int pci_aer_clear_nonfatal_status(struct pci_dev *dev); 58 int pcie_aer_is_native(struct pci_dev *dev); 59 void pci_aer_unmask_internal_errors(struct pci_dev *dev); 60 #else pci_aer_clear_nonfatal_status(struct pci_dev * dev)61static inline int pci_aer_clear_nonfatal_status(struct pci_dev *dev) 62 { 63 return -EINVAL; 64 } pcie_aer_is_native(struct pci_dev * dev)65static inline int pcie_aer_is_native(struct pci_dev *dev) { return 0; } pci_aer_unmask_internal_errors(struct pci_dev * dev)66static inline void pci_aer_unmask_internal_errors(struct pci_dev *dev) { } 67 #endif 68 69 void pci_print_aer(struct pci_dev *dev, int aer_severity, 70 struct aer_capability_regs *aer); 71 int cper_severity_to_aer(int cper_severity); 72 void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn, 73 int severity, struct aer_capability_regs *aer_regs); 74 #endif //_AER_H_ 75 76