--- /dev/null
+/*
+ * drivers/pci/pcie/aer/aerdrv_errprint.c
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Format error messages and print them to console.
+ *
+ * Copyright (C) 2006 Intel Corp.
+ * Tom Long Nguyen (tom.l.nguyen@intel.com)
+ * Zhang Yanmin (yanmin.zhang@intel.com)
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/pm.h>
+#include <linux/suspend.h>
+#include <linux/cper.h>
+
+#include "aerdrv.h"
+#include <ras/ras_event.h>
+
+#define AER_AGENT_RECEIVER 0
+#define AER_AGENT_REQUESTER 1
+#define AER_AGENT_COMPLETER 2
+#define AER_AGENT_TRANSMITTER 3
+
+#define AER_AGENT_REQUESTER_MASK(t) ((t == AER_CORRECTABLE) ? \
+ 0 : (PCI_ERR_UNC_COMP_TIME|PCI_ERR_UNC_UNSUP))
+#define AER_AGENT_COMPLETER_MASK(t) ((t == AER_CORRECTABLE) ? \
+ 0 : PCI_ERR_UNC_COMP_ABORT)
+#define AER_AGENT_TRANSMITTER_MASK(t) ((t == AER_CORRECTABLE) ? \
+ (PCI_ERR_COR_REP_ROLL|PCI_ERR_COR_REP_TIMER) : 0)
+
+#define AER_GET_AGENT(t, e) \
+ ((e & AER_AGENT_COMPLETER_MASK(t)) ? AER_AGENT_COMPLETER : \
+ (e & AER_AGENT_REQUESTER_MASK(t)) ? AER_AGENT_REQUESTER : \
+ (e & AER_AGENT_TRANSMITTER_MASK(t)) ? AER_AGENT_TRANSMITTER : \
+ AER_AGENT_RECEIVER)
+
+#define AER_PHYSICAL_LAYER_ERROR 0
+#define AER_DATA_LINK_LAYER_ERROR 1
+#define AER_TRANSACTION_LAYER_ERROR 2
+
+#define AER_PHYSICAL_LAYER_ERROR_MASK(t) ((t == AER_CORRECTABLE) ? \
+ PCI_ERR_COR_RCVR : 0)
+#define AER_DATA_LINK_LAYER_ERROR_MASK(t) ((t == AER_CORRECTABLE) ? \
+ (PCI_ERR_COR_BAD_TLP| \
+ PCI_ERR_COR_BAD_DLLP| \
+ PCI_ERR_COR_REP_ROLL| \
+ PCI_ERR_COR_REP_TIMER) : PCI_ERR_UNC_DLP)
+
+#define AER_GET_LAYER_ERROR(t, e) \
+ ((e & AER_PHYSICAL_LAYER_ERROR_MASK(t)) ? AER_PHYSICAL_LAYER_ERROR : \
+ (e & AER_DATA_LINK_LAYER_ERROR_MASK(t)) ? AER_DATA_LINK_LAYER_ERROR : \
+ AER_TRANSACTION_LAYER_ERROR)
+
+/*
+ * AER error strings
+ */
+static const char *aer_error_severity_string[] = {
+ "Uncorrected (Non-Fatal)",
+ "Uncorrected (Fatal)",
+ "Corrected"
+};
+
+static const char *aer_error_layer[] = {
+ "Physical Layer",
+ "Data Link Layer",
+ "Transaction Layer"
+};
+
+static const char *aer_correctable_error_string[] = {
+ "Receiver Error", /* Bit Position 0 */
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ "Bad TLP", /* Bit Position 6 */
+ "Bad DLLP", /* Bit Position 7 */
+ "RELAY_NUM Rollover", /* Bit Position 8 */
+ NULL,
+ NULL,
+ NULL,
+ "Replay Timer Timeout", /* Bit Position 12 */
+ "Advisory Non-Fatal", /* Bit Position 13 */
+ "Corrected Internal Error", /* Bit Position 14 */
+ "Header Log Overflow", /* Bit Position 15 */
+};
+
+static const char *aer_uncorrectable_error_string[] = {
+ "Undefined", /* Bit Position 0 */
+ NULL,
+ NULL,
+ NULL,
+ "Data Link Protocol", /* Bit Position 4 */
+ "Surprise Down Error", /* Bit Position 5 */
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ "Poisoned TLP", /* Bit Position 12 */
+ "Flow Control Protocol", /* Bit Position 13 */
+ "Completion Timeout", /* Bit Position 14 */
+ "Completer Abort", /* Bit Position 15 */
+ "Unexpected Completion", /* Bit Position 16 */
+ "Receiver Overflow", /* Bit Position 17 */
+ "Malformed TLP", /* Bit Position 18 */
+ "ECRC", /* Bit Position 19 */
+ "Unsupported Request", /* Bit Position 20 */
+ "ACS Violation", /* Bit Position 21 */
+ "Uncorrectable Internal Error", /* Bit Position 22 */
+ "MC Blocked TLP", /* Bit Position 23 */
+ "AtomicOp Egress Blocked", /* Bit Position 24 */
+ "TLP Prefix Blocked Error", /* Bit Position 25 */
+};
+
+static const char *aer_agent_string[] = {
+ "Receiver ID",
+ "Requester ID",
+ "Completer ID",
+ "Transmitter ID"
+};
+
+static void __print_tlp_header(struct pci_dev *dev,
+ struct aer_header_log_regs *t)
+{
+ dev_err(&dev->dev, " TLP Header: %08x %08x %08x %08x\n",
+ t->dw0, t->dw1, t->dw2, t->dw3);
+}
+
+static void __aer_print_error(struct pci_dev *dev,
+ struct aer_err_info *info)
+{
+ int i, status;
+ const char *errmsg = NULL;
+ status = (info->status & ~info->mask);
+
+ for (i = 0; i < 32; i++) {
+ if (!(status & (1 << i)))
+ continue;
+
+ if (info->severity == AER_CORRECTABLE)
+ errmsg = i < ARRAY_SIZE(aer_correctable_error_string) ?
+ aer_correctable_error_string[i] : NULL;
+ else
+ errmsg = i < ARRAY_SIZE(aer_uncorrectable_error_string) ?
+ aer_uncorrectable_error_string[i] : NULL;
+
+ if (errmsg)
+ dev_err(&dev->dev, " [%2d] %-22s%s\n", i, errmsg,
+ info->first_error == i ? " (First)" : "");
+ else
+ dev_err(&dev->dev, " [%2d] Unknown Error Bit%s\n",
+ i, info->first_error == i ? " (First)" : "");
+ }
+}
+
+void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
+{
+ int layer, agent;
+ int id = ((dev->bus->number << 8) | dev->devfn);
+
+ if (!info->status) {
+ dev_err(&dev->dev, "PCIe Bus Error: severity=%s, type=Unaccessible, id=%04x(Unregistered Agent ID)\n",
+ aer_error_severity_string[info->severity], id);
+ goto out;
+ }
+
+ layer = AER_GET_LAYER_ERROR(info->severity, info->status);
+ agent = AER_GET_AGENT(info->severity, info->status);
+
+ dev_err(&dev->dev, "PCIe Bus Error: severity=%s, type=%s, id=%04x(%s)\n",
+ aer_error_severity_string[info->severity],
+ aer_error_layer[layer], id, aer_agent_string[agent]);
+
+ dev_err(&dev->dev, " device [%04x:%04x] error status/mask=%08x/%08x\n",
+ dev->vendor, dev->device,
+ info->status, info->mask);
+
+ __aer_print_error(dev, info);
+
+ if (info->tlp_header_valid)
+ __print_tlp_header(dev, &info->tlp);
+
+out:
+ if (info->id && info->error_dev_num > 1 && info->id == id)
+ dev_err(&dev->dev, " Error of this Agent(%04x) is reported first\n", id);
+
+ trace_aer_event(dev_name(&dev->dev), (info->status & ~info->mask),
+ info->severity);
+}
+
+void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info)
+{
+ dev_info(&dev->dev, "AER: %s%s error received: id=%04x\n",
+ info->multi_error_valid ? "Multiple " : "",
+ aer_error_severity_string[info->severity], info->id);
+}
+
+#ifdef CONFIG_ACPI_APEI_PCIEAER
+int cper_severity_to_aer(int cper_severity)
+{
+ switch (cper_severity) {
+ case CPER_SEV_RECOVERABLE:
+ return AER_NONFATAL;
+ case CPER_SEV_FATAL:
+ return AER_FATAL;
+ default:
+ return AER_CORRECTABLE;
+ }
+}
+EXPORT_SYMBOL_GPL(cper_severity_to_aer);
+
+void cper_print_aer(struct pci_dev *dev, int cper_severity,
+ struct aer_capability_regs *aer)
+{
+ int aer_severity, layer, agent, status_strs_size, tlp_header_valid = 0;
+ u32 status, mask;
+ const char **status_strs;
+
+ aer_severity = cper_severity_to_aer(cper_severity);
+
+ if (aer_severity == AER_CORRECTABLE) {
+ status = aer->cor_status;
+ mask = aer->cor_mask;
+ status_strs = aer_correctable_error_string;
+ status_strs_size = ARRAY_SIZE(aer_correctable_error_string);
+ } else {
+ status = aer->uncor_status;
+ mask = aer->uncor_mask;
+ status_strs = aer_uncorrectable_error_string;
+ status_strs_size = ARRAY_SIZE(aer_uncorrectable_error_string);
+ tlp_header_valid = status & AER_LOG_TLP_MASKS;
+ }
+
+ layer = AER_GET_LAYER_ERROR(aer_severity, status);
+ agent = AER_GET_AGENT(aer_severity, status);
+
+ dev_err(&dev->dev, "aer_status: 0x%08x, aer_mask: 0x%08x\n", status, mask);
+ cper_print_bits("", status, status_strs, status_strs_size);
+ dev_err(&dev->dev, "aer_layer=%s, aer_agent=%s\n",
+ aer_error_layer[layer], aer_agent_string[agent]);
+
+ if (aer_severity != AER_CORRECTABLE)
+ dev_err(&dev->dev, "aer_uncor_severity: 0x%08x\n",
+ aer->uncor_severity);
+
+ if (tlp_header_valid)
+ __print_tlp_header(dev, &aer->header_log);
+
+ trace_aer_event(dev_name(&dev->dev), (status & ~mask),
+ aer_severity);
+}
+#endif
Code Review / kvmfornfv.git / blobdiff