1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
|
/*
* 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 */
};
static const 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 */
};
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)
{
unsigned char *tlp = (unsigned char *)&t;
dev_err(&dev->dev, " TLP Header:"
" %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));
}
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
|
