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/*
* 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 "aerdrv.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)
#define AER_PR(info, fmt, args...) \
printk("%s" fmt, (info->severity == AER_CORRECTABLE) ? \
KERN_WARNING : KERN_ERR, ## args)
/*
* AER error strings
*/
static char *aer_error_severity_string[] = {
"Uncorrected (Non-Fatal)",
"Uncorrected (Fatal)",
"Corrected"
};
static char *aer_error_layer[] = {
"Physical Layer",
"Data Link Layer",
"Transaction Layer"
};
static 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 */
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
};
static char *aer_uncorrectable_error_string[] = {
NULL,
NULL,
NULL,
NULL,
"Data Link Protocol ", /* Bit Position 4 */
NULL,
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 */
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
};
static char *aer_agent_string[] = {
"Receiver ID",
"Requester ID",
"Completer ID",
"Transmitter ID"
};
static char *aer_get_error_source_name(int severity,
unsigned int status,
char errmsg_buff[])
{
int i;
char *errmsg = NULL;
for (i = 0; i < 32; i++) {
if (!(status & (1 << i)))
continue;
if (severity == AER_CORRECTABLE)
errmsg = aer_correctable_error_string[i];
else
errmsg = aer_uncorrectable_error_string[i];
if (!errmsg) {
sprintf(errmsg_buff, "Unknown Error Bit %2d ", i);
errmsg = errmsg_buff;
}
break;
}
return errmsg;
}
static DEFINE_SPINLOCK(logbuf_lock);
static char errmsg_buff[100];
void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
{
char *errmsg;
int err_layer, agent;
int id = ((dev->bus->number << 8) | dev->devfn);
AER_PR(info, "+------ PCI-Express Device Error ------+\n");
AER_PR(info, "Error Severity\t\t: %s\n",
aer_error_severity_string[info->severity]);
if (info->status == 0) {
AER_PR(info, "PCIE Bus Error type\t: (Unaccessible)\n");
AER_PR(info, "Unregistered Agent ID\t: %04x\n", id);
} else {
err_layer = AER_GET_LAYER_ERROR(info->severity, info->status);
AER_PR(info, "PCIE Bus Error type\t: %s\n",
aer_error_layer[err_layer]);
spin_lock(&logbuf_lock);
errmsg = aer_get_error_source_name(info->severity,
info->status,
errmsg_buff);
AER_PR(info, "%s\t:\n", errmsg);
spin_unlock(&logbuf_lock);
agent = AER_GET_AGENT(info->severity, info->status);
AER_PR(info, "%s\t\t: %04x\n", aer_agent_string[agent], id);
AER_PR(info, "VendorID=%04xh, DeviceID=%04xh,"
" Bus=%02xh, Device=%02xh, Function=%02xh\n",
dev->vendor,
dev->device,
dev->bus->number,
PCI_SLOT(dev->devfn),
PCI_FUNC(dev->devfn));
if (info->flags & AER_TLP_HEADER_VALID_FLAG) {
unsigned char *tlp = (unsigned char *) &info->tlp;
AER_PR(info, "TLP Header:\n");
AER_PR(info, "%02x%02x%02x%02x %02x%02x%02x%02x"
" %02x%02x%02x%02x %02x%02x%02x%02x\n",
*(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp,
*(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4),
*(tlp + 11), *(tlp + 10), *(tlp + 9),
*(tlp + 8), *(tlp + 15), *(tlp + 14),
*(tlp + 13), *(tlp + 12));
}
}
if (info->id && info->error_dev_num > 1 && info->id == id)
AER_PR(info, "Error of this Agent(%04x) is reported first\n",
id);
}
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