include/linux/aer.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * Copyright (C) 2006 Intel Corp.
0004  *     Tom Long Nguyen (tom.l.nguyen@intel.com)
0005  *     Zhang Yanmin (yanmin.zhang@intel.com)
0006  */
0007
0008 #ifndef _AER_H_
0009 #define _AER_H_
0010
0011 #include <linux/errno.h>
0012 #include <linux/types.h>
0013
0014 #define AER_NONFATAL            0
0015 #define AER_FATAL           1
0016 #define AER_CORRECTABLE         2
0017 #define DPC_FATAL           3
0018
0019 struct pci_dev;
0020
0021 struct aer_header_log_regs {
0022     unsigned int dw0;
0023     unsigned int dw1;
0024     unsigned int dw2;
0025     unsigned int dw3;
0026 };
0027
0028 struct aer_capability_regs {
0029     u32 header;
0030     u32 uncor_status;
0031     u32 uncor_mask;
0032     u32 uncor_severity;
0033     u32 cor_status;
0034     u32 cor_mask;
0035     u32 cap_control;
0036     struct aer_header_log_regs header_log;
0037     u32 root_command;
0038     u32 root_status;
0039     u16 cor_err_source;
0040     u16 uncor_err_source;
0041 };
0042
0043 #if defined(CONFIG_PCIEAER)
0044 /* PCIe port driver needs this function to enable AER */
0045 int pci_enable_pcie_error_reporting(struct pci_dev *dev);
0046 int pci_disable_pcie_error_reporting(struct pci_dev *dev);
0047 int pci_aer_clear_nonfatal_status(struct pci_dev *dev);
0048 void pci_save_aer_state(struct pci_dev *dev);
0049 void pci_restore_aer_state(struct pci_dev *dev);
0050 #else
0051 static inline int pci_enable_pcie_error_reporting(struct pci_dev *dev)
0052 {
0053     return -EINVAL;
0054 }
0055 static inline int pci_disable_pcie_error_reporting(struct pci_dev *dev)
0056 {
0057     return -EINVAL;
0058 }
0059 static inline int pci_aer_clear_nonfatal_status(struct pci_dev *dev)
0060 {
0061     return -EINVAL;
0062 }
0063 static inline void pci_save_aer_state(struct pci_dev *dev) {}
0064 static inline void pci_restore_aer_state(struct pci_dev *dev) {}
0065 #endif
0066
0067 void cper_print_aer(struct pci_dev *dev, int aer_severity,
0068             struct aer_capability_regs *aer);
0069 int cper_severity_to_aer(int cper_severity);
0070 void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn,
0071                int severity, struct aer_capability_regs *aer_regs);
0072 #endif //_AER_H_
0073