/* * 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	(PCI_ERR_UNC_COMP_TIME|	\					PCI_ERR_UNC_UNSUP)#define AER_AGENT_COMPLETER_MASK	PCI_ERR_UNC_COMP_ABORT#define AER_AGENT_TRANSMITTER_MASK(t, e) (e & (PCI_ERR_COR_REP_ROLL| \	((t == AER_CORRECTABLE) ? PCI_ERR_COR_REP_TIMER: 0)))#define AER_GET_AGENT(t, e)						\	((e & AER_AGENT_COMPLETER_MASK) ? AER_AGENT_COMPLETER :		\	(e & AER_AGENT_REQUESTER_MASK) ? AER_AGENT_REQUESTER :		\	(AER_AGENT_TRANSMITTER_MASK(t, e)) ? AER_AGENT_TRANSMITTER :	\	AER_AGENT_RECEIVER)#define AER_PHYSICAL_LAYER_ERROR_MASK	PCI_ERR_COR_RCVR#define AER_DATA_LINK_LAYER_ERROR_MASK(t, e)	\		(PCI_ERR_UNC_DLP|		\		PCI_ERR_COR_BAD_TLP| 		\		PCI_ERR_COR_BAD_DLLP|		\		PCI_ERR_COR_REP_ROLL| 		\		((t == AER_CORRECTABLE) ?	\		PCI_ERR_COR_REP_TIMER: 0))#define AER_PHYSICAL_LAYER_ERROR	0#define AER_DATA_LINK_LAYER_ERROR	1#define AER_TRANSACTION_LAYER_ERROR	2#define AER_GET_LAYER_ERROR(t, e)				\	((e & AER_PHYSICAL_LAYER_ERROR_MASK) ?			\	AER_PHYSICAL_LAYER_ERROR :				\	(e & AER_DATA_LINK_LAYER_ERROR_MASK(t, e)) ?		\		AER_DATA_LINK_LAYER_ERROR : 			\		AER_TRANSACTION_LAYER_ERROR)/* * 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;	char * loglevel;	if (info->severity == AER_CORRECTABLE)		loglevel = KERN_WARNING;	else		loglevel = KERN_ERR;	printk("%s+------ PCI-Express Device Error ------+\n", loglevel);	printk("%sError Severity\t\t: %s\n", loglevel,		aer_error_severity_string[info->severity]);	if ( info->status == 0) {		printk("%sPCIE Bus Error type\t: (Unaccessible)\n", loglevel);		printk("%sUnaccessible Received\t: %s\n", loglevel,			info->flags & AER_MULTI_ERROR_VALID_FLAG ?				"Multiple" : "First");		printk("%sUnregistered Agent ID\t: %04x\n", loglevel,			(dev->bus->number << 8) | dev->devfn);	} else {		err_layer = AER_GET_LAYER_ERROR(info->severity, info->status);		printk("%sPCIE Bus Error type\t: %s\n", loglevel,			aer_error_layer[err_layer]);		spin_lock(&logbuf_lock);		errmsg = aer_get_error_source_name(info->severity,				info->status,				errmsg_buff);		printk("%s%s\t: %s\n", loglevel, errmsg,			info->flags & AER_MULTI_ERROR_VALID_FLAG ?				"Multiple" : "First");		spin_unlock(&logbuf_lock);		agent = AER_GET_AGENT(info->severity, info->status);		printk("%s%s\t\t: %04x\n", loglevel,			aer_agent_string[agent],			(dev->bus->number << 8) | dev->devfn);		printk("%sVendorID=%04xh, DeviceID=%04xh,"			" Bus=%02xh, Device=%02xh, Function=%02xh\n",			loglevel,			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;			printk("%sTLB Header:\n", loglevel);			printk("%s%02x%02x%02x%02x %02x%02x%02x%02x"				" %02x%02x%02x%02x %02x%02x%02x%02x\n",				loglevel,				*(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));		}	}}