PCI AER: support Multiple Error Received and no error source id
[linux-2.6.git] / drivers / pci / pcie / aer / aerdrv_errprint.c
1 /*
2  * drivers/pci/pcie/aer/aerdrv_errprint.c
3  *
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
6  * for more details.
7  *
8  * Format error messages and print them to console.
9  *
10  * Copyright (C) 2006 Intel Corp.
11  *      Tom Long Nguyen (tom.l.nguyen@intel.com)
12  *      Zhang Yanmin (yanmin.zhang@intel.com)
13  *
14  */
15
16 #include <linux/module.h>
17 #include <linux/pci.h>
18 #include <linux/kernel.h>
19 #include <linux/errno.h>
20 #include <linux/pm.h>
21 #include <linux/suspend.h>
22
23 #include "aerdrv.h"
24
25 #define AER_AGENT_RECEIVER              0
26 #define AER_AGENT_REQUESTER             1
27 #define AER_AGENT_COMPLETER             2
28 #define AER_AGENT_TRANSMITTER           3
29
30 #define AER_AGENT_REQUESTER_MASK        (PCI_ERR_UNC_COMP_TIME| \
31                                         PCI_ERR_UNC_UNSUP)
32
33 #define AER_AGENT_COMPLETER_MASK        PCI_ERR_UNC_COMP_ABORT
34
35 #define AER_AGENT_TRANSMITTER_MASK(t, e) (e & (PCI_ERR_COR_REP_ROLL| \
36         ((t == AER_CORRECTABLE) ? PCI_ERR_COR_REP_TIMER: 0)))
37
38 #define AER_GET_AGENT(t, e)                                             \
39         ((e & AER_AGENT_COMPLETER_MASK) ? AER_AGENT_COMPLETER :         \
40         (e & AER_AGENT_REQUESTER_MASK) ? AER_AGENT_REQUESTER :          \
41         (AER_AGENT_TRANSMITTER_MASK(t, e)) ? AER_AGENT_TRANSMITTER :    \
42         AER_AGENT_RECEIVER)
43
44 #define AER_PHYSICAL_LAYER_ERROR_MASK   PCI_ERR_COR_RCVR
45 #define AER_DATA_LINK_LAYER_ERROR_MASK(t, e)    \
46                 (PCI_ERR_UNC_DLP|               \
47                 PCI_ERR_COR_BAD_TLP|            \
48                 PCI_ERR_COR_BAD_DLLP|           \
49                 PCI_ERR_COR_REP_ROLL|           \
50                 ((t == AER_CORRECTABLE) ?       \
51                 PCI_ERR_COR_REP_TIMER: 0))
52
53 #define AER_PHYSICAL_LAYER_ERROR        0
54 #define AER_DATA_LINK_LAYER_ERROR       1
55 #define AER_TRANSACTION_LAYER_ERROR     2
56
57 #define AER_GET_LAYER_ERROR(t, e)                               \
58         ((e & AER_PHYSICAL_LAYER_ERROR_MASK) ?                  \
59         AER_PHYSICAL_LAYER_ERROR :                              \
60         (e & AER_DATA_LINK_LAYER_ERROR_MASK(t, e)) ?            \
61                 AER_DATA_LINK_LAYER_ERROR :                     \
62                 AER_TRANSACTION_LAYER_ERROR)
63
64 /*
65  * AER error strings
66  */
67 static char* aer_error_severity_string[] = {
68         "Uncorrected (Non-Fatal)",
69         "Uncorrected (Fatal)",
70         "Corrected"
71 };
72
73 static char* aer_error_layer[] = {
74         "Physical Layer",
75         "Data Link Layer",
76         "Transaction Layer"
77 };
78 static char* aer_correctable_error_string[] = {
79         "Receiver Error        ",       /* Bit Position 0       */
80         NULL,
81         NULL,
82         NULL,
83         NULL,
84         NULL,
85         "Bad TLP               ",       /* Bit Position 6       */
86         "Bad DLLP              ",       /* Bit Position 7       */
87         "RELAY_NUM Rollover    ",       /* Bit Position 8       */
88         NULL,
89         NULL,
90         NULL,
91         "Replay Timer Timeout  ",       /* Bit Position 12      */
92         "Advisory Non-Fatal    ",       /* Bit Position 13      */
93         NULL,
94         NULL,
95         NULL,
96         NULL,
97         NULL,
98         NULL,
99         NULL,
100         NULL,
101         NULL,
102         NULL,
103         NULL,
104         NULL,
105         NULL,
106         NULL,
107         NULL,
108         NULL,
109         NULL,
110         NULL,
111 };
112
113 static char* aer_uncorrectable_error_string[] = {
114         NULL,
115         NULL,
116         NULL,
117         NULL,
118         "Data Link Protocol    ",       /* Bit Position 4       */
119         NULL,
120         NULL,
121         NULL,
122         NULL,
123         NULL,
124         NULL,
125         NULL,
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      */
135         NULL,
136         NULL,
137         NULL,
138         NULL,
139         NULL,
140         NULL,
141         NULL,
142         NULL,
143         NULL,
144         NULL,
145         NULL,
146 };
147
148 static char* aer_agent_string[] = {
149         "Receiver ID",
150         "Requester ID",
151         "Completer ID",
152         "Transmitter ID"
153 };
154
155 static char * aer_get_error_source_name(int severity,
156                         unsigned int status,
157                         char errmsg_buff[])
158 {
159         int i;
160         char * errmsg = NULL;
161
162         for (i = 0; i < 32; i++) {
163                 if (!(status & (1 << i)))
164                         continue;
165
166                 if (severity == AER_CORRECTABLE)
167                         errmsg = aer_correctable_error_string[i];
168                 else
169                         errmsg = aer_uncorrectable_error_string[i];
170
171                 if (!errmsg) {
172                         sprintf(errmsg_buff, "Unknown Error Bit %2d  ", i);
173                         errmsg = errmsg_buff;
174                 }
175
176                 break;
177         }
178
179         return errmsg;
180 }
181
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)
185 {
186         char * errmsg;
187         int err_layer, agent;
188         char * loglevel;
189
190         if (info->severity == AER_CORRECTABLE)
191                 loglevel = KERN_WARNING;
192         else
193                 loglevel = KERN_ERR;
194
195         printk("%s+------ PCI-Express Device Error ------+\n", loglevel);
196         printk("%sError Severity\t\t: %s\n", loglevel,
197                 aer_error_severity_string[info->severity]);
198
199         if ( info->status == 0) {
200                 printk("%sPCIE Bus Error type\t: (Unaccessible)\n", loglevel);
201                 printk("%sUnaccessible Received\t: %s\n", loglevel,
202                         info->flags & AER_MULTI_ERROR_VALID_FLAG ?
203                                 "Multiple" : "First");
204                 printk("%sUnregistered Agent ID\t: %04x\n", loglevel,
205                         (dev->bus->number << 8) | dev->devfn);
206         } else {
207                 err_layer = AER_GET_LAYER_ERROR(info->severity, info->status);
208                 printk("%sPCIE Bus Error type\t: %s\n", loglevel,
209                         aer_error_layer[err_layer]);
210
211                 spin_lock(&logbuf_lock);
212                 errmsg = aer_get_error_source_name(info->severity,
213                                 info->status,
214                                 errmsg_buff);
215                 printk("%s%s\t: %s\n", loglevel, errmsg,
216                         info->flags & AER_MULTI_ERROR_VALID_FLAG ?
217                                 "Multiple" : "First");
218                 spin_unlock(&logbuf_lock);
219
220                 agent = AER_GET_AGENT(info->severity, info->status);
221                 printk("%s%s\t\t: %04x\n", loglevel,
222                         aer_agent_string[agent],
223                         (dev->bus->number << 8) | dev->devfn);
224
225                 printk("%sVendorID=%04xh, DeviceID=%04xh,"
226                         " Bus=%02xh, Device=%02xh, Function=%02xh\n",
227                         loglevel,
228                         dev->vendor,
229                         dev->device,
230                         dev->bus->number,
231                         PCI_SLOT(dev->devfn),
232                         PCI_FUNC(dev->devfn));
233
234                 if (info->flags & AER_TLP_HEADER_VALID_FLAG) {
235                         unsigned char *tlp = (unsigned char *) &info->tlp;
236                         printk("%sTLP Header:\n", loglevel);
237                         printk("%s%02x%02x%02x%02x %02x%02x%02x%02x"
238                                 " %02x%02x%02x%02x %02x%02x%02x%02x\n",
239                                 loglevel,
240                                 *(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp,
241                                 *(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4),
242                                 *(tlp + 11), *(tlp + 10), *(tlp + 9),
243                                 *(tlp + 8), *(tlp + 15), *(tlp + 14),
244                                 *(tlp + 13), *(tlp + 12));
245                 }
246         }
247 }
248