2 * drivers/pci/pcie/aer/aerdrv_errprint.c
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
8 * Format error messages and print them to console.
10 * Copyright (C) 2006 Intel Corp.
11 * Tom Long Nguyen (tom.l.nguyen@intel.com)
12 * Zhang Yanmin (yanmin.zhang@intel.com)
16 #include <linux/module.h>
17 #include <linux/pci.h>
18 #include <linux/kernel.h>
19 #include <linux/errno.h>
21 #include <linux/suspend.h>
25 #define AER_AGENT_RECEIVER 0
26 #define AER_AGENT_REQUESTER 1
27 #define AER_AGENT_COMPLETER 2
28 #define AER_AGENT_TRANSMITTER 3
30 #define AER_AGENT_REQUESTER_MASK(t) ((t == AER_CORRECTABLE) ? \
31 0 : (PCI_ERR_UNC_COMP_TIME|PCI_ERR_UNC_UNSUP))
32 #define AER_AGENT_COMPLETER_MASK(t) ((t == AER_CORRECTABLE) ? \
33 0 : PCI_ERR_UNC_COMP_ABORT)
34 #define AER_AGENT_TRANSMITTER_MASK(t) ((t == AER_CORRECTABLE) ? \
35 (PCI_ERR_COR_REP_ROLL|PCI_ERR_COR_REP_TIMER) : 0)
37 #define AER_GET_AGENT(t, e) \
38 ((e & AER_AGENT_COMPLETER_MASK(t)) ? AER_AGENT_COMPLETER : \
39 (e & AER_AGENT_REQUESTER_MASK(t)) ? AER_AGENT_REQUESTER : \
40 (e & AER_AGENT_TRANSMITTER_MASK(t)) ? AER_AGENT_TRANSMITTER : \
43 #define AER_PHYSICAL_LAYER_ERROR 0
44 #define AER_DATA_LINK_LAYER_ERROR 1
45 #define AER_TRANSACTION_LAYER_ERROR 2
47 #define AER_PHYSICAL_LAYER_ERROR_MASK(t) ((t == AER_CORRECTABLE) ? \
49 #define AER_DATA_LINK_LAYER_ERROR_MASK(t) ((t == AER_CORRECTABLE) ? \
50 (PCI_ERR_COR_BAD_TLP| \
51 PCI_ERR_COR_BAD_DLLP| \
52 PCI_ERR_COR_REP_ROLL| \
53 PCI_ERR_COR_REP_TIMER) : PCI_ERR_UNC_DLP)
55 #define AER_GET_LAYER_ERROR(t, e) \
56 ((e & AER_PHYSICAL_LAYER_ERROR_MASK(t)) ? AER_PHYSICAL_LAYER_ERROR : \
57 (e & AER_DATA_LINK_LAYER_ERROR_MASK(t)) ? AER_DATA_LINK_LAYER_ERROR : \
58 AER_TRANSACTION_LAYER_ERROR)
60 #define AER_PR(info, fmt, args...) \
61 printk("%s" fmt, (info->severity == AER_CORRECTABLE) ? \
62 KERN_WARNING : KERN_ERR, ## args)
67 static char *aer_error_severity_string
[] = {
68 "Uncorrected (Non-Fatal)",
69 "Uncorrected (Fatal)",
73 static char *aer_error_layer
[] = {
78 static char *aer_correctable_error_string
[] = {
79 "Receiver Error ", /* Bit Position 0 */
85 "Bad TLP ", /* Bit Position 6 */
86 "Bad DLLP ", /* Bit Position 7 */
87 "RELAY_NUM Rollover ", /* Bit Position 8 */
91 "Replay Timer Timeout ", /* Bit Position 12 */
92 "Advisory Non-Fatal ", /* Bit Position 13 */
113 static char *aer_uncorrectable_error_string
[] = {
118 "Data Link Protocol ", /* Bit Position 4 */
126 "Poisoned TLP ", /* Bit Position 12 */
127 "Flow Control Protocol ", /* Bit Position 13 */
128 "Completion Timeout ", /* Bit Position 14 */
129 "Completer Abort ", /* Bit Position 15 */
130 "Unexpected Completion ", /* Bit Position 16 */
131 "Receiver Overflow ", /* Bit Position 17 */
132 "Malformed TLP ", /* Bit Position 18 */
133 "ECRC ", /* Bit Position 19 */
134 "Unsupported Request ", /* Bit Position 20 */
148 static char *aer_agent_string
[] = {
155 static char *aer_get_error_source_name(int severity
,
162 for (i
= 0; i
< 32; i
++) {
163 if (!(status
& (1 << i
)))
166 if (severity
== AER_CORRECTABLE
)
167 errmsg
= aer_correctable_error_string
[i
];
169 errmsg
= aer_uncorrectable_error_string
[i
];
172 sprintf(errmsg_buff
, "Unknown Error Bit %2d ", i
);
173 errmsg
= errmsg_buff
;
182 static DEFINE_SPINLOCK(logbuf_lock
);
183 static char errmsg_buff
[100];
184 void aer_print_error(struct pci_dev
*dev
, struct aer_err_info
*info
)
187 int err_layer
, agent
;
189 AER_PR(info
, "+------ PCI-Express Device Error ------+\n");
190 AER_PR(info
, "Error Severity\t\t: %s\n",
191 aer_error_severity_string
[info
->severity
]);
193 if (info
->status
== 0) {
194 AER_PR(info
, "PCIE Bus Error type\t: (Unaccessible)\n");
195 AER_PR(info
, "Unaccessible Received\t: %s\n",
196 info
->flags
& AER_MULTI_ERROR_VALID_FLAG
?
197 "Multiple" : "First");
198 AER_PR(info
, "Unregistered Agent ID\t: %04x\n",
199 (dev
->bus
->number
<< 8) | dev
->devfn
);
201 err_layer
= AER_GET_LAYER_ERROR(info
->severity
, info
->status
);
202 AER_PR(info
, "PCIE Bus Error type\t: %s\n",
203 aer_error_layer
[err_layer
]);
205 spin_lock(&logbuf_lock
);
206 errmsg
= aer_get_error_source_name(info
->severity
,
209 AER_PR(info
, "%s\t: %s\n", errmsg
,
210 info
->flags
& AER_MULTI_ERROR_VALID_FLAG
?
211 "Multiple" : "First");
212 spin_unlock(&logbuf_lock
);
214 agent
= AER_GET_AGENT(info
->severity
, info
->status
);
215 AER_PR(info
, "%s\t\t: %04x\n",
216 aer_agent_string
[agent
],
217 (dev
->bus
->number
<< 8) | dev
->devfn
);
219 AER_PR(info
, "VendorID=%04xh, DeviceID=%04xh,"
220 " Bus=%02xh, Device=%02xh, Function=%02xh\n",
224 PCI_SLOT(dev
->devfn
),
225 PCI_FUNC(dev
->devfn
));
227 if (info
->flags
& AER_TLP_HEADER_VALID_FLAG
) {
228 unsigned char *tlp
= (unsigned char *) &info
->tlp
;
229 AER_PR(info
, "TLP Header:\n");
230 AER_PR(info
, "%02x%02x%02x%02x %02x%02x%02x%02x"
231 " %02x%02x%02x%02x %02x%02x%02x%02x\n",
232 *(tlp
+ 3), *(tlp
+ 2), *(tlp
+ 1), *tlp
,
233 *(tlp
+ 7), *(tlp
+ 6), *(tlp
+ 5), *(tlp
+ 4),
234 *(tlp
+ 11), *(tlp
+ 10), *(tlp
+ 9),
235 *(tlp
+ 8), *(tlp
+ 15), *(tlp
+ 14),
236 *(tlp
+ 13), *(tlp
+ 12));