237 lines
5.7 KiB
C
237 lines
5.7 KiB
C
/*
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* drivers/pci/pcie/aer/aerdrv_errprint.c
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Format error messages and print them to console.
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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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*/
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/pm.h>
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#include <linux/suspend.h>
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#include "aerdrv.h"
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#define AER_AGENT_RECEIVER 0
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#define AER_AGENT_REQUESTER 1
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#define AER_AGENT_COMPLETER 2
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#define AER_AGENT_TRANSMITTER 3
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#define AER_AGENT_REQUESTER_MASK(t) ((t == AER_CORRECTABLE) ? \
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0 : (PCI_ERR_UNC_COMP_TIME|PCI_ERR_UNC_UNSUP))
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#define AER_AGENT_COMPLETER_MASK(t) ((t == AER_CORRECTABLE) ? \
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0 : PCI_ERR_UNC_COMP_ABORT)
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#define AER_AGENT_TRANSMITTER_MASK(t) ((t == AER_CORRECTABLE) ? \
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(PCI_ERR_COR_REP_ROLL|PCI_ERR_COR_REP_TIMER) : 0)
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#define AER_GET_AGENT(t, e) \
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((e & AER_AGENT_COMPLETER_MASK(t)) ? AER_AGENT_COMPLETER : \
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(e & AER_AGENT_REQUESTER_MASK(t)) ? AER_AGENT_REQUESTER : \
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(e & AER_AGENT_TRANSMITTER_MASK(t)) ? AER_AGENT_TRANSMITTER : \
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AER_AGENT_RECEIVER)
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#define AER_PHYSICAL_LAYER_ERROR 0
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#define AER_DATA_LINK_LAYER_ERROR 1
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#define AER_TRANSACTION_LAYER_ERROR 2
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#define AER_PHYSICAL_LAYER_ERROR_MASK(t) ((t == AER_CORRECTABLE) ? \
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PCI_ERR_COR_RCVR : 0)
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#define AER_DATA_LINK_LAYER_ERROR_MASK(t) ((t == AER_CORRECTABLE) ? \
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(PCI_ERR_COR_BAD_TLP| \
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PCI_ERR_COR_BAD_DLLP| \
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PCI_ERR_COR_REP_ROLL| \
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PCI_ERR_COR_REP_TIMER) : PCI_ERR_UNC_DLP)
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#define AER_GET_LAYER_ERROR(t, e) \
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((e & AER_PHYSICAL_LAYER_ERROR_MASK(t)) ? AER_PHYSICAL_LAYER_ERROR : \
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(e & AER_DATA_LINK_LAYER_ERROR_MASK(t)) ? AER_DATA_LINK_LAYER_ERROR : \
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AER_TRANSACTION_LAYER_ERROR)
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#define AER_PR(info, fmt, args...) \
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printk("%s" fmt, (info->severity == AER_CORRECTABLE) ? \
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KERN_WARNING : KERN_ERR, ## args)
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/*
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* AER error strings
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*/
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static char *aer_error_severity_string[] = {
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"Uncorrected (Non-Fatal)",
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"Uncorrected (Fatal)",
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"Corrected"
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};
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static char *aer_error_layer[] = {
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"Physical Layer",
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"Data Link Layer",
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"Transaction Layer"
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};
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static char *aer_correctable_error_string[] = {
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"Receiver Error ", /* Bit Position 0 */
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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"Bad TLP ", /* Bit Position 6 */
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"Bad DLLP ", /* Bit Position 7 */
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"RELAY_NUM Rollover ", /* Bit Position 8 */
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NULL,
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NULL,
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NULL,
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"Replay Timer Timeout ", /* Bit Position 12 */
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"Advisory Non-Fatal ", /* Bit Position 13 */
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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};
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static char *aer_uncorrectable_error_string[] = {
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NULL,
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NULL,
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NULL,
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NULL,
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"Data Link Protocol ", /* Bit Position 4 */
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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"Poisoned TLP ", /* Bit Position 12 */
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"Flow Control Protocol ", /* Bit Position 13 */
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"Completion Timeout ", /* Bit Position 14 */
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"Completer Abort ", /* Bit Position 15 */
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"Unexpected Completion ", /* Bit Position 16 */
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"Receiver Overflow ", /* Bit Position 17 */
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"Malformed TLP ", /* Bit Position 18 */
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"ECRC ", /* Bit Position 19 */
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"Unsupported Request ", /* Bit Position 20 */
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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};
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static char *aer_agent_string[] = {
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"Receiver ID",
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"Requester ID",
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"Completer ID",
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"Transmitter ID"
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};
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static char *aer_get_error_source_name(int severity,
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unsigned int status,
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char errmsg_buff[])
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{
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int i;
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char *errmsg = NULL;
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for (i = 0; i < 32; i++) {
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if (!(status & (1 << i)))
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continue;
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if (severity == AER_CORRECTABLE)
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errmsg = aer_correctable_error_string[i];
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else
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errmsg = aer_uncorrectable_error_string[i];
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if (!errmsg) {
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sprintf(errmsg_buff, "Unknown Error Bit %2d ", i);
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errmsg = errmsg_buff;
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}
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break;
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}
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return errmsg;
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}
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static DEFINE_SPINLOCK(logbuf_lock);
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static char errmsg_buff[100];
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void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
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{
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char *errmsg;
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int err_layer, agent;
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int id = ((dev->bus->number << 8) | dev->devfn);
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AER_PR(info, "+------ PCI-Express Device Error ------+\n");
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AER_PR(info, "Error Severity\t\t: %s\n",
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aer_error_severity_string[info->severity]);
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if (info->status == 0) {
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AER_PR(info, "PCIE Bus Error type\t: (Unaccessible)\n");
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AER_PR(info, "Unregistered Agent ID\t: %04x\n", id);
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} else {
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err_layer = AER_GET_LAYER_ERROR(info->severity, info->status);
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AER_PR(info, "PCIE Bus Error type\t: %s\n",
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aer_error_layer[err_layer]);
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spin_lock(&logbuf_lock);
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errmsg = aer_get_error_source_name(info->severity,
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info->status,
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errmsg_buff);
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AER_PR(info, "%s\t:\n", errmsg);
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spin_unlock(&logbuf_lock);
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agent = AER_GET_AGENT(info->severity, info->status);
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AER_PR(info, "%s\t\t: %04x\n", aer_agent_string[agent], id);
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AER_PR(info, "VendorID=%04xh, DeviceID=%04xh,"
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" Bus=%02xh, Device=%02xh, Function=%02xh\n",
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dev->vendor,
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dev->device,
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dev->bus->number,
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PCI_SLOT(dev->devfn),
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PCI_FUNC(dev->devfn));
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if (info->flags & AER_TLP_HEADER_VALID_FLAG) {
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unsigned char *tlp = (unsigned char *) &info->tlp;
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AER_PR(info, "TLP Header:\n");
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AER_PR(info, "%02x%02x%02x%02x %02x%02x%02x%02x"
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" %02x%02x%02x%02x %02x%02x%02x%02x\n",
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*(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp,
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*(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4),
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*(tlp + 11), *(tlp + 10), *(tlp + 9),
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*(tlp + 8), *(tlp + 15), *(tlp + 14),
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*(tlp + 13), *(tlp + 12));
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}
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}
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if (info->id && info->error_dev_num > 1 && info->id == id)
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AER_PR(info, "Error of this Agent(%04x) is reported first\n",
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id);
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}
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