v4.19.13 snapshot.
diff --git a/include/linux/aer.h b/include/linux/aer.h
new file mode 100644
index 0000000..514bffa
--- /dev/null
+++ b/include/linux/aer.h
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2006 Intel Corp.
+ * Tom Long Nguyen (tom.l.nguyen@intel.com)
+ * Zhang Yanmin (yanmin.zhang@intel.com)
+ */
+
+#ifndef _AER_H_
+#define _AER_H_
+
+#include <linux/errno.h>
+#include <linux/types.h>
+
+#define AER_NONFATAL 0
+#define AER_FATAL 1
+#define AER_CORRECTABLE 2
+#define DPC_FATAL 3
+
+struct pci_dev;
+
+struct aer_header_log_regs {
+ unsigned int dw0;
+ unsigned int dw1;
+ unsigned int dw2;
+ unsigned int dw3;
+};
+
+struct aer_capability_regs {
+ u32 header;
+ u32 uncor_status;
+ u32 uncor_mask;
+ u32 uncor_severity;
+ u32 cor_status;
+ u32 cor_mask;
+ u32 cap_control;
+ struct aer_header_log_regs header_log;
+ u32 root_command;
+ u32 root_status;
+ u16 cor_err_source;
+ u16 uncor_err_source;
+};
+
+#if defined(CONFIG_PCIEAER)
+/* PCIe port driver needs this function to enable AER */
+int pci_enable_pcie_error_reporting(struct pci_dev *dev);
+int pci_disable_pcie_error_reporting(struct pci_dev *dev);
+int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev);
+int pci_cleanup_aer_error_status_regs(struct pci_dev *dev);
+#else
+static inline int pci_enable_pcie_error_reporting(struct pci_dev *dev)
+{
+ return -EINVAL;
+}
+static inline int pci_disable_pcie_error_reporting(struct pci_dev *dev)
+{
+ return -EINVAL;
+}
+static inline int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
+{
+ return -EINVAL;
+}
+static inline int pci_cleanup_aer_error_status_regs(struct pci_dev *dev)
+{
+ return -EINVAL;
+}
+#endif
+
+void cper_print_aer(struct pci_dev *dev, int aer_severity,
+ struct aer_capability_regs *aer);
+int cper_severity_to_aer(int cper_severity);
+void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn,
+ int severity, struct aer_capability_regs *aer_regs);
+#endif //_AER_H_
+