af65d1ad41
Previously we did not save and restore the AER configuration on suspend/resume, so the configuration may be lost after resume. Save the AER configuration during suspend and restore it during resume. [bhelgaas: commit log] Link: https://lore.kernel.org/r/92EBB4272BF81E4089A7126EC1E7B28492C3B007@IRSMSX101.ger.corp.intel.com Signed-off-by: Mayurkumar Patel <mayurkumar.patel@intel.com> Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2006 Intel Corp.
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* Tom Long Nguyen (tom.l.nguyen@intel.com)
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* Zhang Yanmin (yanmin.zhang@intel.com)
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*/
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#ifndef _AER_H_
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#define _AER_H_
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#include <linux/errno.h>
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#include <linux/types.h>
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#define AER_NONFATAL 0
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#define AER_FATAL 1
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#define AER_CORRECTABLE 2
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#define DPC_FATAL 3
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struct pci_dev;
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struct aer_header_log_regs {
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unsigned int dw0;
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unsigned int dw1;
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unsigned int dw2;
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unsigned int dw3;
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};
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struct aer_capability_regs {
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u32 header;
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u32 uncor_status;
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u32 uncor_mask;
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u32 uncor_severity;
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u32 cor_status;
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u32 cor_mask;
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u32 cap_control;
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struct aer_header_log_regs header_log;
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u32 root_command;
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u32 root_status;
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u16 cor_err_source;
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u16 uncor_err_source;
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};
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#if defined(CONFIG_PCIEAER)
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/* PCIe port driver needs this function to enable AER */
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int pci_enable_pcie_error_reporting(struct pci_dev *dev);
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int pci_disable_pcie_error_reporting(struct pci_dev *dev);
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int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev);
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int pci_cleanup_aer_error_status_regs(struct pci_dev *dev);
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void pci_save_aer_state(struct pci_dev *dev);
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void pci_restore_aer_state(struct pci_dev *dev);
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#else
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static inline int pci_enable_pcie_error_reporting(struct pci_dev *dev)
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{
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return -EINVAL;
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}
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static inline int pci_disable_pcie_error_reporting(struct pci_dev *dev)
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{
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return -EINVAL;
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}
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static inline int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
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{
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return -EINVAL;
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}
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static inline int pci_cleanup_aer_error_status_regs(struct pci_dev *dev)
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{
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return -EINVAL;
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}
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static inline void pci_save_aer_state(struct pci_dev *dev) {}
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static inline void pci_restore_aer_state(struct pci_dev *dev) {}
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#endif
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void cper_print_aer(struct pci_dev *dev, int aer_severity,
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struct aer_capability_regs *aer);
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int cper_severity_to_aer(int cper_severity);
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void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn,
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int severity, struct aer_capability_regs *aer_regs);
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#endif //_AER_H_
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