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