Commit | Line | Data |
---|---|---|
da9bb1d2 AC |
1 | /* |
2 | * edac_mc kernel module | |
3 | * (C) 2005 Linux Networx (http://lnxi.com) | |
4 | * This file may be distributed under the terms of the | |
5 | * GNU General Public License. | |
6 | * | |
7 | * Written by Thayne Harbaugh | |
8 | * Based on work by Dan Hollis <goemon at anime dot net> and others. | |
9 | * http://www.anime.net/~goemon/linux-ecc/ | |
10 | * | |
11 | * Modified by Dave Peterson and Doug Thompson | |
12 | * | |
13 | */ | |
14 | ||
15 | ||
16 | #include <linux/config.h> | |
da9bb1d2 AC |
17 | #include <linux/module.h> |
18 | #include <linux/proc_fs.h> | |
19 | #include <linux/kernel.h> | |
20 | #include <linux/types.h> | |
21 | #include <linux/smp.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/sysctl.h> | |
24 | #include <linux/highmem.h> | |
25 | #include <linux/timer.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/jiffies.h> | |
28 | #include <linux/spinlock.h> | |
29 | #include <linux/list.h> | |
30 | #include <linux/sysdev.h> | |
31 | #include <linux/ctype.h> | |
32 | ||
33 | #include <asm/uaccess.h> | |
34 | #include <asm/page.h> | |
35 | #include <asm/edac.h> | |
36 | ||
37 | #include "edac_mc.h" | |
38 | ||
39 | #define EDAC_MC_VERSION "edac_mc Ver: 2.0.0 " __DATE__ | |
40 | ||
ceb2ca9c DP |
41 | /* For now, disable the EDAC sysfs code. The sysfs interface that EDAC |
42 | * presents to user space needs more thought, and is likely to change | |
43 | * substantially. | |
44 | */ | |
45 | #define DISABLE_EDAC_SYSFS | |
46 | ||
da9bb1d2 AC |
47 | #ifdef CONFIG_EDAC_DEBUG |
48 | /* Values of 0 to 4 will generate output */ | |
49 | int edac_debug_level = 1; | |
50 | EXPORT_SYMBOL(edac_debug_level); | |
51 | #endif | |
52 | ||
53 | /* EDAC Controls, setable by module parameter, and sysfs */ | |
54 | static int log_ue = 1; | |
55 | static int log_ce = 1; | |
ceb2ca9c | 56 | static int panic_on_ue; |
da9bb1d2 AC |
57 | static int poll_msec = 1000; |
58 | ||
59 | static int check_pci_parity = 0; /* default YES check PCI parity */ | |
60 | static int panic_on_pci_parity; /* default no panic on PCI Parity */ | |
61 | static atomic_t pci_parity_count = ATOMIC_INIT(0); | |
62 | ||
63 | /* lock to memory controller's control array */ | |
64 | static DECLARE_MUTEX(mem_ctls_mutex); | |
65 | static struct list_head mc_devices = LIST_HEAD_INIT(mc_devices); | |
66 | ||
67 | /* Structure of the whitelist and blacklist arrays */ | |
68 | struct edac_pci_device_list { | |
69 | unsigned int vendor; /* Vendor ID */ | |
70 | unsigned int device; /* Deviice ID */ | |
71 | }; | |
72 | ||
73 | ||
74 | #define MAX_LISTED_PCI_DEVICES 32 | |
75 | ||
76 | /* List of PCI devices (vendor-id:device-id) that should be skipped */ | |
77 | static struct edac_pci_device_list pci_blacklist[MAX_LISTED_PCI_DEVICES]; | |
78 | static int pci_blacklist_count; | |
79 | ||
80 | /* List of PCI devices (vendor-id:device-id) that should be scanned */ | |
81 | static struct edac_pci_device_list pci_whitelist[MAX_LISTED_PCI_DEVICES]; | |
82 | static int pci_whitelist_count ; | |
83 | ||
84 | /* START sysfs data and methods */ | |
85 | ||
ceb2ca9c DP |
86 | #ifndef DISABLE_EDAC_SYSFS |
87 | ||
da9bb1d2 AC |
88 | static const char *mem_types[] = { |
89 | [MEM_EMPTY] = "Empty", | |
90 | [MEM_RESERVED] = "Reserved", | |
91 | [MEM_UNKNOWN] = "Unknown", | |
92 | [MEM_FPM] = "FPM", | |
93 | [MEM_EDO] = "EDO", | |
94 | [MEM_BEDO] = "BEDO", | |
95 | [MEM_SDR] = "Unbuffered-SDR", | |
96 | [MEM_RDR] = "Registered-SDR", | |
97 | [MEM_DDR] = "Unbuffered-DDR", | |
98 | [MEM_RDDR] = "Registered-DDR", | |
99 | [MEM_RMBS] = "RMBS" | |
100 | }; | |
101 | ||
102 | static const char *dev_types[] = { | |
103 | [DEV_UNKNOWN] = "Unknown", | |
104 | [DEV_X1] = "x1", | |
105 | [DEV_X2] = "x2", | |
106 | [DEV_X4] = "x4", | |
107 | [DEV_X8] = "x8", | |
108 | [DEV_X16] = "x16", | |
109 | [DEV_X32] = "x32", | |
110 | [DEV_X64] = "x64" | |
111 | }; | |
112 | ||
113 | static const char *edac_caps[] = { | |
114 | [EDAC_UNKNOWN] = "Unknown", | |
115 | [EDAC_NONE] = "None", | |
116 | [EDAC_RESERVED] = "Reserved", | |
117 | [EDAC_PARITY] = "PARITY", | |
118 | [EDAC_EC] = "EC", | |
119 | [EDAC_SECDED] = "SECDED", | |
120 | [EDAC_S2ECD2ED] = "S2ECD2ED", | |
121 | [EDAC_S4ECD4ED] = "S4ECD4ED", | |
122 | [EDAC_S8ECD8ED] = "S8ECD8ED", | |
123 | [EDAC_S16ECD16ED] = "S16ECD16ED" | |
124 | }; | |
125 | ||
126 | ||
127 | /* sysfs object: /sys/devices/system/edac */ | |
128 | static struct sysdev_class edac_class = { | |
129 | set_kset_name("edac"), | |
130 | }; | |
131 | ||
132 | /* sysfs objects: | |
133 | * /sys/devices/system/edac/mc | |
134 | * /sys/devices/system/edac/pci | |
135 | */ | |
136 | static struct kobject edac_memctrl_kobj; | |
137 | static struct kobject edac_pci_kobj; | |
138 | ||
139 | /* | |
140 | * /sys/devices/system/edac/mc; | |
141 | * data structures and methods | |
142 | */ | |
4136cabf | 143 | #if 0 |
da9bb1d2 AC |
144 | static ssize_t memctrl_string_show(void *ptr, char *buffer) |
145 | { | |
146 | char *value = (char*) ptr; | |
147 | return sprintf(buffer, "%s\n", value); | |
148 | } | |
4136cabf | 149 | #endif |
da9bb1d2 AC |
150 | |
151 | static ssize_t memctrl_int_show(void *ptr, char *buffer) | |
152 | { | |
153 | int *value = (int*) ptr; | |
154 | return sprintf(buffer, "%d\n", *value); | |
155 | } | |
156 | ||
157 | static ssize_t memctrl_int_store(void *ptr, const char *buffer, size_t count) | |
158 | { | |
159 | int *value = (int*) ptr; | |
160 | ||
161 | if (isdigit(*buffer)) | |
162 | *value = simple_strtoul(buffer, NULL, 0); | |
163 | ||
164 | return count; | |
165 | } | |
166 | ||
167 | struct memctrl_dev_attribute { | |
168 | struct attribute attr; | |
169 | void *value; | |
170 | ssize_t (*show)(void *,char *); | |
171 | ssize_t (*store)(void *, const char *, size_t); | |
172 | }; | |
173 | ||
174 | /* Set of show/store abstract level functions for memory control object */ | |
175 | static ssize_t | |
176 | memctrl_dev_show(struct kobject *kobj, struct attribute *attr, char *buffer) | |
177 | { | |
178 | struct memctrl_dev_attribute *memctrl_dev; | |
179 | memctrl_dev = (struct memctrl_dev_attribute*)attr; | |
180 | ||
181 | if (memctrl_dev->show) | |
182 | return memctrl_dev->show(memctrl_dev->value, buffer); | |
183 | return -EIO; | |
184 | } | |
185 | ||
186 | static ssize_t | |
187 | memctrl_dev_store(struct kobject *kobj, struct attribute *attr, | |
188 | const char *buffer, size_t count) | |
189 | { | |
190 | struct memctrl_dev_attribute *memctrl_dev; | |
191 | memctrl_dev = (struct memctrl_dev_attribute*)attr; | |
192 | ||
193 | if (memctrl_dev->store) | |
194 | return memctrl_dev->store(memctrl_dev->value, buffer, count); | |
195 | return -EIO; | |
196 | } | |
197 | ||
198 | static struct sysfs_ops memctrlfs_ops = { | |
199 | .show = memctrl_dev_show, | |
200 | .store = memctrl_dev_store | |
201 | }; | |
202 | ||
203 | #define MEMCTRL_ATTR(_name,_mode,_show,_store) \ | |
204 | struct memctrl_dev_attribute attr_##_name = { \ | |
205 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
206 | .value = &_name, \ | |
207 | .show = _show, \ | |
208 | .store = _store, \ | |
209 | }; | |
210 | ||
211 | #define MEMCTRL_STRING_ATTR(_name,_data,_mode,_show,_store) \ | |
212 | struct memctrl_dev_attribute attr_##_name = { \ | |
213 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
214 | .value = _data, \ | |
215 | .show = _show, \ | |
216 | .store = _store, \ | |
217 | }; | |
218 | ||
219 | /* cwrow<id> attribute f*/ | |
4136cabf | 220 | #if 0 |
da9bb1d2 | 221 | MEMCTRL_STRING_ATTR(mc_version,EDAC_MC_VERSION,S_IRUGO,memctrl_string_show,NULL); |
4136cabf | 222 | #endif |
da9bb1d2 AC |
223 | |
224 | /* csrow<id> control files */ | |
225 | MEMCTRL_ATTR(panic_on_ue,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store); | |
226 | MEMCTRL_ATTR(log_ue,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store); | |
227 | MEMCTRL_ATTR(log_ce,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store); | |
228 | MEMCTRL_ATTR(poll_msec,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store); | |
229 | ||
230 | ||
231 | /* Base Attributes of the memory ECC object */ | |
232 | static struct memctrl_dev_attribute *memctrl_attr[] = { | |
233 | &attr_panic_on_ue, | |
234 | &attr_log_ue, | |
235 | &attr_log_ce, | |
236 | &attr_poll_msec, | |
da9bb1d2 AC |
237 | NULL, |
238 | }; | |
239 | ||
240 | /* Main MC kobject release() function */ | |
241 | static void edac_memctrl_master_release(struct kobject *kobj) | |
242 | { | |
243 | debugf1("EDAC MC: " __FILE__ ": %s()\n", __func__); | |
244 | } | |
245 | ||
246 | static struct kobj_type ktype_memctrl = { | |
247 | .release = edac_memctrl_master_release, | |
248 | .sysfs_ops = &memctrlfs_ops, | |
249 | .default_attrs = (struct attribute **) memctrl_attr, | |
250 | }; | |
251 | ||
ceb2ca9c | 252 | #endif /* DISABLE_EDAC_SYSFS */ |
da9bb1d2 AC |
253 | |
254 | /* Initialize the main sysfs entries for edac: | |
255 | * /sys/devices/system/edac | |
256 | * | |
257 | * and children | |
258 | * | |
259 | * Return: 0 SUCCESS | |
260 | * !0 FAILURE | |
261 | */ | |
262 | static int edac_sysfs_memctrl_setup(void) | |
ceb2ca9c DP |
263 | #ifdef DISABLE_EDAC_SYSFS |
264 | { | |
265 | return 0; | |
266 | } | |
267 | #else | |
da9bb1d2 AC |
268 | { |
269 | int err=0; | |
270 | ||
271 | debugf1("MC: " __FILE__ ": %s()\n", __func__); | |
272 | ||
273 | /* create the /sys/devices/system/edac directory */ | |
274 | err = sysdev_class_register(&edac_class); | |
275 | if (!err) { | |
276 | /* Init the MC's kobject */ | |
277 | memset(&edac_memctrl_kobj, 0, sizeof (edac_memctrl_kobj)); | |
278 | kobject_init(&edac_memctrl_kobj); | |
279 | ||
280 | edac_memctrl_kobj.parent = &edac_class.kset.kobj; | |
281 | edac_memctrl_kobj.ktype = &ktype_memctrl; | |
282 | ||
283 | /* generate sysfs "..../edac/mc" */ | |
284 | err = kobject_set_name(&edac_memctrl_kobj,"mc"); | |
285 | if (!err) { | |
286 | /* FIXME: maybe new sysdev_create_subdir() */ | |
287 | err = kobject_register(&edac_memctrl_kobj); | |
288 | if (err) { | |
289 | debugf1("Failed to register '.../edac/mc'\n"); | |
290 | } else { | |
291 | debugf1("Registered '.../edac/mc' kobject\n"); | |
292 | } | |
293 | } | |
294 | } else { | |
295 | debugf1(KERN_WARNING "__FILE__ %s() error=%d\n", __func__,err); | |
296 | } | |
297 | ||
298 | return err; | |
299 | } | |
ceb2ca9c | 300 | #endif /* DISABLE_EDAC_SYSFS */ |
da9bb1d2 AC |
301 | |
302 | /* | |
303 | * MC teardown: | |
304 | * the '..../edac/mc' kobject followed by '..../edac' itself | |
305 | */ | |
306 | static void edac_sysfs_memctrl_teardown(void) | |
307 | { | |
ceb2ca9c | 308 | #ifndef DISABLE_EDAC_SYSFS |
da9bb1d2 AC |
309 | debugf0("MC: " __FILE__ ": %s()\n", __func__); |
310 | ||
311 | /* Unregister the MC's kobject */ | |
312 | kobject_unregister(&edac_memctrl_kobj); | |
313 | ||
314 | /* release the master edac mc kobject */ | |
315 | kobject_put(&edac_memctrl_kobj); | |
316 | ||
317 | /* Unregister the 'edac' object */ | |
318 | sysdev_class_unregister(&edac_class); | |
ceb2ca9c | 319 | #endif /* DISABLE_EDAC_SYSFS */ |
da9bb1d2 AC |
320 | } |
321 | ||
ceb2ca9c DP |
322 | #ifndef DISABLE_EDAC_SYSFS |
323 | ||
da9bb1d2 AC |
324 | /* |
325 | * /sys/devices/system/edac/pci; | |
326 | * data structures and methods | |
327 | */ | |
328 | ||
329 | struct list_control { | |
330 | struct edac_pci_device_list *list; | |
331 | int *count; | |
332 | }; | |
333 | ||
4136cabf AV |
334 | |
335 | #if 0 | |
da9bb1d2 AC |
336 | /* Output the list as: vendor_id:device:id<,vendor_id:device_id> */ |
337 | static ssize_t edac_pci_list_string_show(void *ptr, char *buffer) | |
338 | { | |
339 | struct list_control *listctl; | |
340 | struct edac_pci_device_list *list; | |
341 | char *p = buffer; | |
342 | int len=0; | |
343 | int i; | |
344 | ||
345 | listctl = ptr; | |
346 | list = listctl->list; | |
347 | ||
348 | for (i = 0; i < *(listctl->count); i++, list++ ) { | |
349 | if (len > 0) | |
350 | len += snprintf(p + len, (PAGE_SIZE-len), ","); | |
351 | ||
352 | len += snprintf(p + len, | |
353 | (PAGE_SIZE-len), | |
354 | "%x:%x", | |
355 | list->vendor,list->device); | |
356 | } | |
357 | ||
358 | len += snprintf(p + len,(PAGE_SIZE-len), "\n"); | |
359 | ||
360 | return (ssize_t) len; | |
361 | } | |
362 | ||
363 | /** | |
364 | * | |
365 | * Scan string from **s to **e looking for one 'vendor:device' tuple | |
366 | * where each field is a hex value | |
367 | * | |
368 | * return 0 if an entry is NOT found | |
369 | * return 1 if an entry is found | |
370 | * fill in *vendor_id and *device_id with values found | |
371 | * | |
372 | * In both cases, make sure *s has been moved forward toward *e | |
373 | */ | |
374 | static int parse_one_device(const char **s,const char **e, | |
375 | unsigned int *vendor_id, unsigned int *device_id) | |
376 | { | |
377 | const char *runner, *p; | |
378 | ||
379 | /* if null byte, we are done */ | |
380 | if (!**s) { | |
381 | (*s)++; /* keep *s moving */ | |
382 | return 0; | |
383 | } | |
384 | ||
385 | /* skip over newlines & whitespace */ | |
386 | if ((**s == '\n') || isspace(**s)) { | |
387 | (*s)++; | |
388 | return 0; | |
389 | } | |
390 | ||
391 | if (!isxdigit(**s)) { | |
392 | (*s)++; | |
393 | return 0; | |
394 | } | |
395 | ||
396 | /* parse vendor_id */ | |
397 | runner = *s; | |
398 | while (runner < *e) { | |
399 | /* scan for vendor:device delimiter */ | |
400 | if (*runner == ':') { | |
401 | *vendor_id = simple_strtol((char*) *s, (char**) &p, 16); | |
402 | runner = p + 1; | |
403 | break; | |
404 | } | |
405 | runner++; | |
406 | } | |
407 | ||
408 | if (!isxdigit(*runner)) { | |
409 | *s = ++runner; | |
410 | return 0; | |
411 | } | |
412 | ||
413 | /* parse device_id */ | |
414 | if (runner < *e) { | |
415 | *device_id = simple_strtol((char*)runner, (char**)&p, 16); | |
416 | runner = p; | |
417 | } | |
418 | ||
419 | *s = runner; | |
420 | ||
421 | return 1; | |
422 | } | |
423 | ||
424 | static ssize_t edac_pci_list_string_store(void *ptr, const char *buffer, | |
425 | size_t count) | |
426 | { | |
427 | struct list_control *listctl; | |
428 | struct edac_pci_device_list *list; | |
429 | unsigned int vendor_id, device_id; | |
430 | const char *s, *e; | |
431 | int *index; | |
432 | ||
433 | s = (char*)buffer; | |
434 | e = s + count; | |
435 | ||
436 | listctl = ptr; | |
437 | list = listctl->list; | |
438 | index = listctl->count; | |
439 | ||
440 | *index = 0; | |
441 | while (*index < MAX_LISTED_PCI_DEVICES) { | |
442 | ||
443 | if (parse_one_device(&s,&e,&vendor_id,&device_id)) { | |
444 | list[ *index ].vendor = vendor_id; | |
445 | list[ *index ].device = device_id; | |
446 | (*index)++; | |
447 | } | |
448 | ||
449 | /* check for all data consume */ | |
450 | if (s >= e) | |
451 | break; | |
452 | } | |
453 | ||
454 | return count; | |
455 | } | |
456 | ||
4136cabf | 457 | #endif |
da9bb1d2 AC |
458 | static ssize_t edac_pci_int_show(void *ptr, char *buffer) |
459 | { | |
460 | int *value = ptr; | |
461 | return sprintf(buffer,"%d\n",*value); | |
462 | } | |
463 | ||
464 | static ssize_t edac_pci_int_store(void *ptr, const char *buffer, size_t count) | |
465 | { | |
466 | int *value = ptr; | |
467 | ||
468 | if (isdigit(*buffer)) | |
469 | *value = simple_strtoul(buffer,NULL,0); | |
470 | ||
471 | return count; | |
472 | } | |
473 | ||
474 | struct edac_pci_dev_attribute { | |
475 | struct attribute attr; | |
476 | void *value; | |
477 | ssize_t (*show)(void *,char *); | |
478 | ssize_t (*store)(void *, const char *,size_t); | |
479 | }; | |
480 | ||
481 | /* Set of show/store abstract level functions for PCI Parity object */ | |
482 | static ssize_t edac_pci_dev_show(struct kobject *kobj, struct attribute *attr, | |
483 | char *buffer) | |
484 | { | |
485 | struct edac_pci_dev_attribute *edac_pci_dev; | |
486 | edac_pci_dev= (struct edac_pci_dev_attribute*)attr; | |
487 | ||
488 | if (edac_pci_dev->show) | |
489 | return edac_pci_dev->show(edac_pci_dev->value, buffer); | |
490 | return -EIO; | |
491 | } | |
492 | ||
493 | static ssize_t edac_pci_dev_store(struct kobject *kobj, struct attribute *attr, | |
494 | const char *buffer, size_t count) | |
495 | { | |
496 | struct edac_pci_dev_attribute *edac_pci_dev; | |
497 | edac_pci_dev= (struct edac_pci_dev_attribute*)attr; | |
498 | ||
499 | if (edac_pci_dev->show) | |
500 | return edac_pci_dev->store(edac_pci_dev->value, buffer, count); | |
501 | return -EIO; | |
502 | } | |
503 | ||
504 | static struct sysfs_ops edac_pci_sysfs_ops = { | |
505 | .show = edac_pci_dev_show, | |
506 | .store = edac_pci_dev_store | |
507 | }; | |
508 | ||
509 | ||
510 | #define EDAC_PCI_ATTR(_name,_mode,_show,_store) \ | |
511 | struct edac_pci_dev_attribute edac_pci_attr_##_name = { \ | |
512 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
513 | .value = &_name, \ | |
514 | .show = _show, \ | |
515 | .store = _store, \ | |
516 | }; | |
517 | ||
518 | #define EDAC_PCI_STRING_ATTR(_name,_data,_mode,_show,_store) \ | |
519 | struct edac_pci_dev_attribute edac_pci_attr_##_name = { \ | |
520 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
521 | .value = _data, \ | |
522 | .show = _show, \ | |
523 | .store = _store, \ | |
524 | }; | |
525 | ||
4136cabf | 526 | #if 0 |
da9bb1d2 AC |
527 | static struct list_control pci_whitelist_control = { |
528 | .list = pci_whitelist, | |
529 | .count = &pci_whitelist_count | |
530 | }; | |
531 | ||
532 | static struct list_control pci_blacklist_control = { | |
533 | .list = pci_blacklist, | |
534 | .count = &pci_blacklist_count | |
535 | }; | |
536 | ||
537 | /* whitelist attribute */ | |
538 | EDAC_PCI_STRING_ATTR(pci_parity_whitelist, | |
539 | &pci_whitelist_control, | |
540 | S_IRUGO|S_IWUSR, | |
541 | edac_pci_list_string_show, | |
542 | edac_pci_list_string_store); | |
543 | ||
544 | EDAC_PCI_STRING_ATTR(pci_parity_blacklist, | |
545 | &pci_blacklist_control, | |
546 | S_IRUGO|S_IWUSR, | |
547 | edac_pci_list_string_show, | |
548 | edac_pci_list_string_store); | |
4136cabf | 549 | #endif |
da9bb1d2 AC |
550 | |
551 | /* PCI Parity control files */ | |
552 | EDAC_PCI_ATTR(check_pci_parity,S_IRUGO|S_IWUSR,edac_pci_int_show,edac_pci_int_store); | |
553 | EDAC_PCI_ATTR(panic_on_pci_parity,S_IRUGO|S_IWUSR,edac_pci_int_show,edac_pci_int_store); | |
554 | EDAC_PCI_ATTR(pci_parity_count,S_IRUGO,edac_pci_int_show,NULL); | |
555 | ||
556 | /* Base Attributes of the memory ECC object */ | |
557 | static struct edac_pci_dev_attribute *edac_pci_attr[] = { | |
558 | &edac_pci_attr_check_pci_parity, | |
559 | &edac_pci_attr_panic_on_pci_parity, | |
560 | &edac_pci_attr_pci_parity_count, | |
da9bb1d2 AC |
561 | NULL, |
562 | }; | |
563 | ||
564 | /* No memory to release */ | |
565 | static void edac_pci_release(struct kobject *kobj) | |
566 | { | |
567 | debugf1("EDAC PCI: " __FILE__ ": %s()\n", __func__); | |
568 | } | |
569 | ||
570 | static struct kobj_type ktype_edac_pci = { | |
571 | .release = edac_pci_release, | |
572 | .sysfs_ops = &edac_pci_sysfs_ops, | |
573 | .default_attrs = (struct attribute **) edac_pci_attr, | |
574 | }; | |
575 | ||
ceb2ca9c DP |
576 | #endif /* DISABLE_EDAC_SYSFS */ |
577 | ||
da9bb1d2 AC |
578 | /** |
579 | * edac_sysfs_pci_setup() | |
580 | * | |
581 | */ | |
582 | static int edac_sysfs_pci_setup(void) | |
ceb2ca9c DP |
583 | #ifdef DISABLE_EDAC_SYSFS |
584 | { | |
585 | return 0; | |
586 | } | |
587 | #else | |
da9bb1d2 AC |
588 | { |
589 | int err; | |
590 | ||
591 | debugf1("MC: " __FILE__ ": %s()\n", __func__); | |
592 | ||
593 | memset(&edac_pci_kobj, 0, sizeof(edac_pci_kobj)); | |
594 | ||
595 | kobject_init(&edac_pci_kobj); | |
596 | edac_pci_kobj.parent = &edac_class.kset.kobj; | |
597 | edac_pci_kobj.ktype = &ktype_edac_pci; | |
598 | ||
599 | err = kobject_set_name(&edac_pci_kobj, "pci"); | |
600 | if (!err) { | |
601 | /* Instanstiate the csrow object */ | |
602 | /* FIXME: maybe new sysdev_create_subdir() */ | |
603 | err = kobject_register(&edac_pci_kobj); | |
604 | if (err) | |
605 | debugf1("Failed to register '.../edac/pci'\n"); | |
606 | else | |
607 | debugf1("Registered '.../edac/pci' kobject\n"); | |
608 | } | |
609 | return err; | |
610 | } | |
ceb2ca9c | 611 | #endif /* DISABLE_EDAC_SYSFS */ |
da9bb1d2 AC |
612 | |
613 | static void edac_sysfs_pci_teardown(void) | |
614 | { | |
ceb2ca9c | 615 | #ifndef DISABLE_EDAC_SYSFS |
da9bb1d2 AC |
616 | debugf0("MC: " __FILE__ ": %s()\n", __func__); |
617 | ||
618 | kobject_unregister(&edac_pci_kobj); | |
619 | kobject_put(&edac_pci_kobj); | |
ceb2ca9c | 620 | #endif |
da9bb1d2 AC |
621 | } |
622 | ||
ceb2ca9c DP |
623 | #ifndef DISABLE_EDAC_SYSFS |
624 | ||
da9bb1d2 AC |
625 | /* EDAC sysfs CSROW data structures and methods */ |
626 | ||
627 | /* Set of more detailed csrow<id> attribute show/store functions */ | |
628 | static ssize_t csrow_ch0_dimm_label_show(struct csrow_info *csrow, char *data) | |
629 | { | |
630 | ssize_t size = 0; | |
631 | ||
632 | if (csrow->nr_channels > 0) { | |
633 | size = snprintf(data, EDAC_MC_LABEL_LEN,"%s\n", | |
634 | csrow->channels[0].label); | |
635 | } | |
636 | return size; | |
637 | } | |
638 | ||
639 | static ssize_t csrow_ch1_dimm_label_show(struct csrow_info *csrow, char *data) | |
640 | { | |
641 | ssize_t size = 0; | |
642 | ||
643 | if (csrow->nr_channels > 0) { | |
644 | size = snprintf(data, EDAC_MC_LABEL_LEN, "%s\n", | |
645 | csrow->channels[1].label); | |
646 | } | |
647 | return size; | |
648 | } | |
649 | ||
650 | static ssize_t csrow_ch0_dimm_label_store(struct csrow_info *csrow, | |
651 | const char *data, size_t size) | |
652 | { | |
653 | ssize_t max_size = 0; | |
654 | ||
655 | if (csrow->nr_channels > 0) { | |
656 | max_size = min((ssize_t)size,(ssize_t)EDAC_MC_LABEL_LEN-1); | |
657 | strncpy(csrow->channels[0].label, data, max_size); | |
658 | csrow->channels[0].label[max_size] = '\0'; | |
659 | } | |
660 | return size; | |
661 | } | |
662 | ||
663 | static ssize_t csrow_ch1_dimm_label_store(struct csrow_info *csrow, | |
664 | const char *data, size_t size) | |
665 | { | |
666 | ssize_t max_size = 0; | |
667 | ||
668 | if (csrow->nr_channels > 1) { | |
669 | max_size = min((ssize_t)size,(ssize_t)EDAC_MC_LABEL_LEN-1); | |
670 | strncpy(csrow->channels[1].label, data, max_size); | |
671 | csrow->channels[1].label[max_size] = '\0'; | |
672 | } | |
673 | return max_size; | |
674 | } | |
675 | ||
676 | static ssize_t csrow_ue_count_show(struct csrow_info *csrow, char *data) | |
677 | { | |
678 | return sprintf(data,"%u\n", csrow->ue_count); | |
679 | } | |
680 | ||
681 | static ssize_t csrow_ce_count_show(struct csrow_info *csrow, char *data) | |
682 | { | |
683 | return sprintf(data,"%u\n", csrow->ce_count); | |
684 | } | |
685 | ||
686 | static ssize_t csrow_ch0_ce_count_show(struct csrow_info *csrow, char *data) | |
687 | { | |
688 | ssize_t size = 0; | |
689 | ||
690 | if (csrow->nr_channels > 0) { | |
691 | size = sprintf(data,"%u\n", csrow->channels[0].ce_count); | |
692 | } | |
693 | return size; | |
694 | } | |
695 | ||
696 | static ssize_t csrow_ch1_ce_count_show(struct csrow_info *csrow, char *data) | |
697 | { | |
698 | ssize_t size = 0; | |
699 | ||
700 | if (csrow->nr_channels > 1) { | |
701 | size = sprintf(data,"%u\n", csrow->channels[1].ce_count); | |
702 | } | |
703 | return size; | |
704 | } | |
705 | ||
706 | static ssize_t csrow_size_show(struct csrow_info *csrow, char *data) | |
707 | { | |
708 | return sprintf(data,"%u\n", PAGES_TO_MiB(csrow->nr_pages)); | |
709 | } | |
710 | ||
711 | static ssize_t csrow_mem_type_show(struct csrow_info *csrow, char *data) | |
712 | { | |
713 | return sprintf(data,"%s\n", mem_types[csrow->mtype]); | |
714 | } | |
715 | ||
716 | static ssize_t csrow_dev_type_show(struct csrow_info *csrow, char *data) | |
717 | { | |
718 | return sprintf(data,"%s\n", dev_types[csrow->dtype]); | |
719 | } | |
720 | ||
721 | static ssize_t csrow_edac_mode_show(struct csrow_info *csrow, char *data) | |
722 | { | |
723 | return sprintf(data,"%s\n", edac_caps[csrow->edac_mode]); | |
724 | } | |
725 | ||
726 | struct csrowdev_attribute { | |
727 | struct attribute attr; | |
728 | ssize_t (*show)(struct csrow_info *,char *); | |
729 | ssize_t (*store)(struct csrow_info *, const char *,size_t); | |
730 | }; | |
731 | ||
732 | #define to_csrow(k) container_of(k, struct csrow_info, kobj) | |
733 | #define to_csrowdev_attr(a) container_of(a, struct csrowdev_attribute, attr) | |
734 | ||
735 | /* Set of show/store higher level functions for csrow objects */ | |
736 | static ssize_t csrowdev_show(struct kobject *kobj, struct attribute *attr, | |
737 | char *buffer) | |
738 | { | |
739 | struct csrow_info *csrow = to_csrow(kobj); | |
740 | struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr); | |
741 | ||
742 | if (csrowdev_attr->show) | |
743 | return csrowdev_attr->show(csrow, buffer); | |
744 | return -EIO; | |
745 | } | |
746 | ||
747 | static ssize_t csrowdev_store(struct kobject *kobj, struct attribute *attr, | |
748 | const char *buffer, size_t count) | |
749 | { | |
750 | struct csrow_info *csrow = to_csrow(kobj); | |
751 | struct csrowdev_attribute * csrowdev_attr = to_csrowdev_attr(attr); | |
752 | ||
753 | if (csrowdev_attr->store) | |
754 | return csrowdev_attr->store(csrow, buffer, count); | |
755 | return -EIO; | |
756 | } | |
757 | ||
758 | static struct sysfs_ops csrowfs_ops = { | |
759 | .show = csrowdev_show, | |
760 | .store = csrowdev_store | |
761 | }; | |
762 | ||
763 | #define CSROWDEV_ATTR(_name,_mode,_show,_store) \ | |
764 | struct csrowdev_attribute attr_##_name = { \ | |
765 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
766 | .show = _show, \ | |
767 | .store = _store, \ | |
768 | }; | |
769 | ||
770 | /* cwrow<id>/attribute files */ | |
771 | CSROWDEV_ATTR(size_mb,S_IRUGO,csrow_size_show,NULL); | |
772 | CSROWDEV_ATTR(dev_type,S_IRUGO,csrow_dev_type_show,NULL); | |
773 | CSROWDEV_ATTR(mem_type,S_IRUGO,csrow_mem_type_show,NULL); | |
774 | CSROWDEV_ATTR(edac_mode,S_IRUGO,csrow_edac_mode_show,NULL); | |
775 | CSROWDEV_ATTR(ue_count,S_IRUGO,csrow_ue_count_show,NULL); | |
776 | CSROWDEV_ATTR(ce_count,S_IRUGO,csrow_ce_count_show,NULL); | |
777 | CSROWDEV_ATTR(ch0_ce_count,S_IRUGO,csrow_ch0_ce_count_show,NULL); | |
778 | CSROWDEV_ATTR(ch1_ce_count,S_IRUGO,csrow_ch1_ce_count_show,NULL); | |
779 | ||
780 | /* control/attribute files */ | |
781 | CSROWDEV_ATTR(ch0_dimm_label,S_IRUGO|S_IWUSR, | |
782 | csrow_ch0_dimm_label_show, | |
783 | csrow_ch0_dimm_label_store); | |
784 | CSROWDEV_ATTR(ch1_dimm_label,S_IRUGO|S_IWUSR, | |
785 | csrow_ch1_dimm_label_show, | |
786 | csrow_ch1_dimm_label_store); | |
787 | ||
788 | ||
789 | /* Attributes of the CSROW<id> object */ | |
790 | static struct csrowdev_attribute *csrow_attr[] = { | |
791 | &attr_dev_type, | |
792 | &attr_mem_type, | |
793 | &attr_edac_mode, | |
794 | &attr_size_mb, | |
795 | &attr_ue_count, | |
796 | &attr_ce_count, | |
797 | &attr_ch0_ce_count, | |
798 | &attr_ch1_ce_count, | |
799 | &attr_ch0_dimm_label, | |
800 | &attr_ch1_dimm_label, | |
801 | NULL, | |
802 | }; | |
803 | ||
804 | ||
805 | /* No memory to release */ | |
806 | static void edac_csrow_instance_release(struct kobject *kobj) | |
807 | { | |
808 | debugf1("EDAC MC: " __FILE__ ": %s()\n", __func__); | |
809 | } | |
810 | ||
811 | static struct kobj_type ktype_csrow = { | |
812 | .release = edac_csrow_instance_release, | |
813 | .sysfs_ops = &csrowfs_ops, | |
814 | .default_attrs = (struct attribute **) csrow_attr, | |
815 | }; | |
816 | ||
817 | /* Create a CSROW object under specifed edac_mc_device */ | |
818 | static int edac_create_csrow_object(struct kobject *edac_mci_kobj, | |
819 | struct csrow_info *csrow, int index ) | |
820 | { | |
821 | int err = 0; | |
822 | ||
823 | debugf0("MC: " __FILE__ ": %s()\n", __func__); | |
824 | ||
825 | memset(&csrow->kobj, 0, sizeof(csrow->kobj)); | |
826 | ||
827 | /* generate ..../edac/mc/mc<id>/csrow<index> */ | |
828 | ||
829 | kobject_init(&csrow->kobj); | |
830 | csrow->kobj.parent = edac_mci_kobj; | |
831 | csrow->kobj.ktype = &ktype_csrow; | |
832 | ||
833 | /* name this instance of csrow<id> */ | |
834 | err = kobject_set_name(&csrow->kobj,"csrow%d",index); | |
835 | if (!err) { | |
836 | /* Instanstiate the csrow object */ | |
837 | err = kobject_register(&csrow->kobj); | |
838 | if (err) | |
839 | debugf0("Failed to register CSROW%d\n",index); | |
840 | else | |
841 | debugf0("Registered CSROW%d\n",index); | |
842 | } | |
843 | ||
844 | return err; | |
845 | } | |
846 | ||
847 | /* sysfs data structures and methods for the MCI kobjects */ | |
848 | ||
849 | static ssize_t mci_reset_counters_store(struct mem_ctl_info *mci, | |
850 | const char *data, size_t count ) | |
851 | { | |
852 | int row, chan; | |
853 | ||
854 | mci->ue_noinfo_count = 0; | |
855 | mci->ce_noinfo_count = 0; | |
856 | mci->ue_count = 0; | |
857 | mci->ce_count = 0; | |
858 | for (row = 0; row < mci->nr_csrows; row++) { | |
859 | struct csrow_info *ri = &mci->csrows[row]; | |
860 | ||
861 | ri->ue_count = 0; | |
862 | ri->ce_count = 0; | |
863 | for (chan = 0; chan < ri->nr_channels; chan++) | |
864 | ri->channels[chan].ce_count = 0; | |
865 | } | |
866 | mci->start_time = jiffies; | |
867 | ||
868 | return count; | |
869 | } | |
870 | ||
871 | static ssize_t mci_ue_count_show(struct mem_ctl_info *mci, char *data) | |
872 | { | |
873 | return sprintf(data,"%d\n", mci->ue_count); | |
874 | } | |
875 | ||
876 | static ssize_t mci_ce_count_show(struct mem_ctl_info *mci, char *data) | |
877 | { | |
878 | return sprintf(data,"%d\n", mci->ce_count); | |
879 | } | |
880 | ||
881 | static ssize_t mci_ce_noinfo_show(struct mem_ctl_info *mci, char *data) | |
882 | { | |
883 | return sprintf(data,"%d\n", mci->ce_noinfo_count); | |
884 | } | |
885 | ||
886 | static ssize_t mci_ue_noinfo_show(struct mem_ctl_info *mci, char *data) | |
887 | { | |
888 | return sprintf(data,"%d\n", mci->ue_noinfo_count); | |
889 | } | |
890 | ||
891 | static ssize_t mci_seconds_show(struct mem_ctl_info *mci, char *data) | |
892 | { | |
893 | return sprintf(data,"%ld\n", (jiffies - mci->start_time) / HZ); | |
894 | } | |
895 | ||
896 | static ssize_t mci_mod_name_show(struct mem_ctl_info *mci, char *data) | |
897 | { | |
898 | return sprintf(data,"%s %s\n", mci->mod_name, mci->mod_ver); | |
899 | } | |
900 | ||
901 | static ssize_t mci_ctl_name_show(struct mem_ctl_info *mci, char *data) | |
902 | { | |
903 | return sprintf(data,"%s\n", mci->ctl_name); | |
904 | } | |
905 | ||
906 | static int mci_output_edac_cap(char *buf, unsigned long edac_cap) | |
907 | { | |
908 | char *p = buf; | |
909 | int bit_idx; | |
910 | ||
911 | for (bit_idx = 0; bit_idx < 8 * sizeof(edac_cap); bit_idx++) { | |
912 | if ((edac_cap >> bit_idx) & 0x1) | |
913 | p += sprintf(p, "%s ", edac_caps[bit_idx]); | |
914 | } | |
915 | ||
916 | return p - buf; | |
917 | } | |
918 | ||
919 | static ssize_t mci_edac_capability_show(struct mem_ctl_info *mci, char *data) | |
920 | { | |
921 | char *p = data; | |
922 | ||
923 | p += mci_output_edac_cap(p,mci->edac_ctl_cap); | |
924 | p += sprintf(p, "\n"); | |
925 | ||
926 | return p - data; | |
927 | } | |
928 | ||
929 | static ssize_t mci_edac_current_capability_show(struct mem_ctl_info *mci, | |
930 | char *data) | |
931 | { | |
932 | char *p = data; | |
933 | ||
934 | p += mci_output_edac_cap(p,mci->edac_cap); | |
935 | p += sprintf(p, "\n"); | |
936 | ||
937 | return p - data; | |
938 | } | |
939 | ||
940 | static int mci_output_mtype_cap(char *buf, unsigned long mtype_cap) | |
941 | { | |
942 | char *p = buf; | |
943 | int bit_idx; | |
944 | ||
945 | for (bit_idx = 0; bit_idx < 8 * sizeof(mtype_cap); bit_idx++) { | |
946 | if ((mtype_cap >> bit_idx) & 0x1) | |
947 | p += sprintf(p, "%s ", mem_types[bit_idx]); | |
948 | } | |
949 | ||
950 | return p - buf; | |
951 | } | |
952 | ||
953 | static ssize_t mci_supported_mem_type_show(struct mem_ctl_info *mci, char *data) | |
954 | { | |
955 | char *p = data; | |
956 | ||
957 | p += mci_output_mtype_cap(p,mci->mtype_cap); | |
958 | p += sprintf(p, "\n"); | |
959 | ||
960 | return p - data; | |
961 | } | |
962 | ||
963 | static ssize_t mci_size_mb_show(struct mem_ctl_info *mci, char *data) | |
964 | { | |
965 | int total_pages, csrow_idx; | |
966 | ||
967 | for (total_pages = csrow_idx = 0; csrow_idx < mci->nr_csrows; | |
968 | csrow_idx++) { | |
969 | struct csrow_info *csrow = &mci->csrows[csrow_idx]; | |
970 | ||
971 | if (!csrow->nr_pages) | |
972 | continue; | |
973 | total_pages += csrow->nr_pages; | |
974 | } | |
975 | ||
976 | return sprintf(data,"%u\n", PAGES_TO_MiB(total_pages)); | |
977 | } | |
978 | ||
979 | struct mcidev_attribute { | |
980 | struct attribute attr; | |
981 | ssize_t (*show)(struct mem_ctl_info *,char *); | |
982 | ssize_t (*store)(struct mem_ctl_info *, const char *,size_t); | |
983 | }; | |
984 | ||
985 | #define to_mci(k) container_of(k, struct mem_ctl_info, edac_mci_kobj) | |
986 | #define to_mcidev_attr(a) container_of(a, struct mcidev_attribute, attr) | |
987 | ||
988 | static ssize_t mcidev_show(struct kobject *kobj, struct attribute *attr, | |
989 | char *buffer) | |
990 | { | |
991 | struct mem_ctl_info *mem_ctl_info = to_mci(kobj); | |
992 | struct mcidev_attribute * mcidev_attr = to_mcidev_attr(attr); | |
993 | ||
994 | if (mcidev_attr->show) | |
995 | return mcidev_attr->show(mem_ctl_info, buffer); | |
996 | return -EIO; | |
997 | } | |
998 | ||
999 | static ssize_t mcidev_store(struct kobject *kobj, struct attribute *attr, | |
1000 | const char *buffer, size_t count) | |
1001 | { | |
1002 | struct mem_ctl_info *mem_ctl_info = to_mci(kobj); | |
1003 | struct mcidev_attribute * mcidev_attr = to_mcidev_attr(attr); | |
1004 | ||
1005 | if (mcidev_attr->store) | |
1006 | return mcidev_attr->store(mem_ctl_info, buffer, count); | |
1007 | return -EIO; | |
1008 | } | |
1009 | ||
1010 | static struct sysfs_ops mci_ops = { | |
1011 | .show = mcidev_show, | |
1012 | .store = mcidev_store | |
1013 | }; | |
1014 | ||
1015 | #define MCIDEV_ATTR(_name,_mode,_show,_store) \ | |
1016 | struct mcidev_attribute mci_attr_##_name = { \ | |
1017 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
1018 | .show = _show, \ | |
1019 | .store = _store, \ | |
1020 | }; | |
1021 | ||
1022 | /* Control file */ | |
1023 | MCIDEV_ATTR(reset_counters,S_IWUSR,NULL,mci_reset_counters_store); | |
1024 | ||
1025 | /* Attribute files */ | |
1026 | MCIDEV_ATTR(mc_name,S_IRUGO,mci_ctl_name_show,NULL); | |
1027 | MCIDEV_ATTR(module_name,S_IRUGO,mci_mod_name_show,NULL); | |
1028 | MCIDEV_ATTR(edac_capability,S_IRUGO,mci_edac_capability_show,NULL); | |
1029 | MCIDEV_ATTR(size_mb,S_IRUGO,mci_size_mb_show,NULL); | |
1030 | MCIDEV_ATTR(seconds_since_reset,S_IRUGO,mci_seconds_show,NULL); | |
1031 | MCIDEV_ATTR(ue_noinfo_count,S_IRUGO,mci_ue_noinfo_show,NULL); | |
1032 | MCIDEV_ATTR(ce_noinfo_count,S_IRUGO,mci_ce_noinfo_show,NULL); | |
1033 | MCIDEV_ATTR(ue_count,S_IRUGO,mci_ue_count_show,NULL); | |
1034 | MCIDEV_ATTR(ce_count,S_IRUGO,mci_ce_count_show,NULL); | |
1035 | MCIDEV_ATTR(edac_current_capability,S_IRUGO, | |
1036 | mci_edac_current_capability_show,NULL); | |
1037 | MCIDEV_ATTR(supported_mem_type,S_IRUGO, | |
1038 | mci_supported_mem_type_show,NULL); | |
1039 | ||
1040 | ||
1041 | static struct mcidev_attribute *mci_attr[] = { | |
1042 | &mci_attr_reset_counters, | |
1043 | &mci_attr_module_name, | |
1044 | &mci_attr_mc_name, | |
1045 | &mci_attr_edac_capability, | |
1046 | &mci_attr_edac_current_capability, | |
1047 | &mci_attr_supported_mem_type, | |
1048 | &mci_attr_size_mb, | |
1049 | &mci_attr_seconds_since_reset, | |
1050 | &mci_attr_ue_noinfo_count, | |
1051 | &mci_attr_ce_noinfo_count, | |
1052 | &mci_attr_ue_count, | |
1053 | &mci_attr_ce_count, | |
1054 | NULL | |
1055 | }; | |
1056 | ||
1057 | ||
1058 | /* | |
1059 | * Release of a MC controlling instance | |
1060 | */ | |
1061 | static void edac_mci_instance_release(struct kobject *kobj) | |
1062 | { | |
1063 | struct mem_ctl_info *mci; | |
1064 | mci = container_of(kobj,struct mem_ctl_info,edac_mci_kobj); | |
1065 | ||
1066 | debugf0("MC: " __FILE__ ": %s() idx=%d calling kfree\n", | |
1067 | __func__, mci->mc_idx); | |
1068 | ||
1069 | kfree(mci); | |
1070 | } | |
1071 | ||
1072 | static struct kobj_type ktype_mci = { | |
1073 | .release = edac_mci_instance_release, | |
1074 | .sysfs_ops = &mci_ops, | |
1075 | .default_attrs = (struct attribute **) mci_attr, | |
1076 | }; | |
1077 | ||
ceb2ca9c DP |
1078 | #endif /* DISABLE_EDAC_SYSFS */ |
1079 | ||
da9bb1d2 AC |
1080 | #define EDAC_DEVICE_SYMLINK "device" |
1081 | ||
1082 | /* | |
1083 | * Create a new Memory Controller kobject instance, | |
1084 | * mc<id> under the 'mc' directory | |
1085 | * | |
1086 | * Return: | |
1087 | * 0 Success | |
1088 | * !0 Failure | |
1089 | */ | |
1090 | static int edac_create_sysfs_mci_device(struct mem_ctl_info *mci) | |
ceb2ca9c DP |
1091 | #ifdef DISABLE_EDAC_SYSFS |
1092 | { | |
1093 | return 0; | |
1094 | } | |
1095 | #else | |
da9bb1d2 AC |
1096 | { |
1097 | int i; | |
1098 | int err; | |
1099 | struct csrow_info *csrow; | |
1100 | struct kobject *edac_mci_kobj=&mci->edac_mci_kobj; | |
1101 | ||
1102 | debugf0("MC: " __FILE__ ": %s() idx=%d\n", __func__, mci->mc_idx); | |
1103 | ||
1104 | memset(edac_mci_kobj, 0, sizeof(*edac_mci_kobj)); | |
1105 | kobject_init(edac_mci_kobj); | |
1106 | ||
1107 | /* set the name of the mc<id> object */ | |
1108 | err = kobject_set_name(edac_mci_kobj,"mc%d",mci->mc_idx); | |
1109 | if (err) | |
1110 | return err; | |
1111 | ||
1112 | /* link to our parent the '..../edac/mc' object */ | |
1113 | edac_mci_kobj->parent = &edac_memctrl_kobj; | |
1114 | edac_mci_kobj->ktype = &ktype_mci; | |
1115 | ||
1116 | /* register the mc<id> kobject */ | |
1117 | err = kobject_register(edac_mci_kobj); | |
1118 | if (err) | |
1119 | return err; | |
1120 | ||
1121 | /* create a symlink for the device */ | |
1122 | err = sysfs_create_link(edac_mci_kobj, &mci->pdev->dev.kobj, | |
1123 | EDAC_DEVICE_SYMLINK); | |
1124 | if (err) { | |
1125 | kobject_unregister(edac_mci_kobj); | |
1126 | return err; | |
1127 | } | |
1128 | ||
1129 | /* Make directories for each CSROW object | |
1130 | * under the mc<id> kobject | |
1131 | */ | |
1132 | for (i = 0; i < mci->nr_csrows; i++) { | |
1133 | ||
1134 | csrow = &mci->csrows[i]; | |
1135 | ||
1136 | /* Only expose populated CSROWs */ | |
1137 | if (csrow->nr_pages > 0) { | |
1138 | err = edac_create_csrow_object(edac_mci_kobj,csrow,i); | |
1139 | if (err) | |
1140 | goto fail; | |
1141 | } | |
1142 | } | |
1143 | ||
1144 | /* Mark this MCI instance as having sysfs entries */ | |
1145 | mci->sysfs_active = MCI_SYSFS_ACTIVE; | |
1146 | ||
1147 | return 0; | |
1148 | ||
1149 | ||
1150 | /* CSROW error: backout what has already been registered, */ | |
1151 | fail: | |
1152 | for ( i--; i >= 0; i--) { | |
1153 | if (csrow->nr_pages > 0) { | |
1154 | kobject_unregister(&mci->csrows[i].kobj); | |
1155 | kobject_put(&mci->csrows[i].kobj); | |
1156 | } | |
1157 | } | |
1158 | ||
1159 | kobject_unregister(edac_mci_kobj); | |
1160 | kobject_put(edac_mci_kobj); | |
1161 | ||
1162 | return err; | |
1163 | } | |
ceb2ca9c | 1164 | #endif /* DISABLE_EDAC_SYSFS */ |
da9bb1d2 AC |
1165 | |
1166 | /* | |
1167 | * remove a Memory Controller instance | |
1168 | */ | |
1169 | static void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) | |
1170 | { | |
ceb2ca9c | 1171 | #ifndef DISABLE_EDAC_SYSFS |
da9bb1d2 AC |
1172 | int i; |
1173 | ||
1174 | debugf0("MC: " __FILE__ ": %s()\n", __func__); | |
1175 | ||
1176 | /* remove all csrow kobjects */ | |
1177 | for (i = 0; i < mci->nr_csrows; i++) { | |
1178 | if (mci->csrows[i].nr_pages > 0) { | |
1179 | kobject_unregister(&mci->csrows[i].kobj); | |
1180 | kobject_put(&mci->csrows[i].kobj); | |
1181 | } | |
1182 | } | |
1183 | ||
1184 | sysfs_remove_link(&mci->edac_mci_kobj, EDAC_DEVICE_SYMLINK); | |
1185 | ||
1186 | kobject_unregister(&mci->edac_mci_kobj); | |
1187 | kobject_put(&mci->edac_mci_kobj); | |
ceb2ca9c | 1188 | #endif /* DISABLE_EDAC_SYSFS */ |
da9bb1d2 AC |
1189 | } |
1190 | ||
1191 | /* END OF sysfs data and methods */ | |
1192 | ||
1193 | #ifdef CONFIG_EDAC_DEBUG | |
1194 | ||
1195 | EXPORT_SYMBOL(edac_mc_dump_channel); | |
1196 | ||
1197 | void edac_mc_dump_channel(struct channel_info *chan) | |
1198 | { | |
1199 | debugf4("\tchannel = %p\n", chan); | |
1200 | debugf4("\tchannel->chan_idx = %d\n", chan->chan_idx); | |
1201 | debugf4("\tchannel->ce_count = %d\n", chan->ce_count); | |
1202 | debugf4("\tchannel->label = '%s'\n", chan->label); | |
1203 | debugf4("\tchannel->csrow = %p\n\n", chan->csrow); | |
1204 | } | |
1205 | ||
1206 | ||
1207 | EXPORT_SYMBOL(edac_mc_dump_csrow); | |
1208 | ||
1209 | void edac_mc_dump_csrow(struct csrow_info *csrow) | |
1210 | { | |
1211 | debugf4("\tcsrow = %p\n", csrow); | |
1212 | debugf4("\tcsrow->csrow_idx = %d\n", csrow->csrow_idx); | |
1213 | debugf4("\tcsrow->first_page = 0x%lx\n", | |
1214 | csrow->first_page); | |
1215 | debugf4("\tcsrow->last_page = 0x%lx\n", csrow->last_page); | |
1216 | debugf4("\tcsrow->page_mask = 0x%lx\n", csrow->page_mask); | |
1217 | debugf4("\tcsrow->nr_pages = 0x%x\n", csrow->nr_pages); | |
1218 | debugf4("\tcsrow->nr_channels = %d\n", | |
1219 | csrow->nr_channels); | |
1220 | debugf4("\tcsrow->channels = %p\n", csrow->channels); | |
1221 | debugf4("\tcsrow->mci = %p\n\n", csrow->mci); | |
1222 | } | |
1223 | ||
1224 | ||
1225 | EXPORT_SYMBOL(edac_mc_dump_mci); | |
1226 | ||
1227 | void edac_mc_dump_mci(struct mem_ctl_info *mci) | |
1228 | { | |
1229 | debugf3("\tmci = %p\n", mci); | |
1230 | debugf3("\tmci->mtype_cap = %lx\n", mci->mtype_cap); | |
1231 | debugf3("\tmci->edac_ctl_cap = %lx\n", mci->edac_ctl_cap); | |
1232 | debugf3("\tmci->edac_cap = %lx\n", mci->edac_cap); | |
1233 | debugf4("\tmci->edac_check = %p\n", mci->edac_check); | |
1234 | debugf3("\tmci->nr_csrows = %d, csrows = %p\n", | |
1235 | mci->nr_csrows, mci->csrows); | |
1236 | debugf3("\tpdev = %p\n", mci->pdev); | |
1237 | debugf3("\tmod_name:ctl_name = %s:%s\n", | |
1238 | mci->mod_name, mci->ctl_name); | |
1239 | debugf3("\tpvt_info = %p\n\n", mci->pvt_info); | |
1240 | } | |
1241 | ||
1242 | ||
1243 | #endif /* CONFIG_EDAC_DEBUG */ | |
1244 | ||
1245 | /* 'ptr' points to a possibly unaligned item X such that sizeof(X) is 'size'. | |
1246 | * Adjust 'ptr' so that its alignment is at least as stringent as what the | |
1247 | * compiler would provide for X and return the aligned result. | |
1248 | * | |
1249 | * If 'size' is a constant, the compiler will optimize this whole function | |
1250 | * down to either a no-op or the addition of a constant to the value of 'ptr'. | |
1251 | */ | |
1252 | static inline char * align_ptr (void *ptr, unsigned size) | |
1253 | { | |
1254 | unsigned align, r; | |
1255 | ||
1256 | /* Here we assume that the alignment of a "long long" is the most | |
1257 | * stringent alignment that the compiler will ever provide by default. | |
1258 | * As far as I know, this is a reasonable assumption. | |
1259 | */ | |
1260 | if (size > sizeof(long)) | |
1261 | align = sizeof(long long); | |
1262 | else if (size > sizeof(int)) | |
1263 | align = sizeof(long); | |
1264 | else if (size > sizeof(short)) | |
1265 | align = sizeof(int); | |
1266 | else if (size > sizeof(char)) | |
1267 | align = sizeof(short); | |
1268 | else | |
1269 | return (char *) ptr; | |
1270 | ||
1271 | r = size % align; | |
1272 | ||
1273 | if (r == 0) | |
1274 | return (char *) ptr; | |
1275 | ||
1276 | return (char *) (((unsigned long) ptr) + align - r); | |
1277 | } | |
1278 | ||
1279 | ||
1280 | EXPORT_SYMBOL(edac_mc_alloc); | |
1281 | ||
1282 | /** | |
1283 | * edac_mc_alloc: Allocate a struct mem_ctl_info structure | |
1284 | * @size_pvt: size of private storage needed | |
1285 | * @nr_csrows: Number of CWROWS needed for this MC | |
1286 | * @nr_chans: Number of channels for the MC | |
1287 | * | |
1288 | * Everything is kmalloc'ed as one big chunk - more efficient. | |
1289 | * Only can be used if all structures have the same lifetime - otherwise | |
1290 | * you have to allocate and initialize your own structures. | |
1291 | * | |
1292 | * Use edac_mc_free() to free mc structures allocated by this function. | |
1293 | * | |
1294 | * Returns: | |
1295 | * NULL allocation failed | |
1296 | * struct mem_ctl_info pointer | |
1297 | */ | |
1298 | struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows, | |
1299 | unsigned nr_chans) | |
1300 | { | |
1301 | struct mem_ctl_info *mci; | |
1302 | struct csrow_info *csi, *csrow; | |
1303 | struct channel_info *chi, *chp, *chan; | |
1304 | void *pvt; | |
1305 | unsigned size; | |
1306 | int row, chn; | |
1307 | ||
1308 | /* Figure out the offsets of the various items from the start of an mc | |
1309 | * structure. We want the alignment of each item to be at least as | |
1310 | * stringent as what the compiler would provide if we could simply | |
1311 | * hardcode everything into a single struct. | |
1312 | */ | |
1313 | mci = (struct mem_ctl_info *) 0; | |
1314 | csi = (struct csrow_info *)align_ptr(&mci[1], sizeof(*csi)); | |
1315 | chi = (struct channel_info *) | |
1316 | align_ptr(&csi[nr_csrows], sizeof(*chi)); | |
1317 | pvt = align_ptr(&chi[nr_chans * nr_csrows], sz_pvt); | |
1318 | size = ((unsigned long) pvt) + sz_pvt; | |
1319 | ||
1320 | if ((mci = kmalloc(size, GFP_KERNEL)) == NULL) | |
1321 | return NULL; | |
1322 | ||
1323 | /* Adjust pointers so they point within the memory we just allocated | |
1324 | * rather than an imaginary chunk of memory located at address 0. | |
1325 | */ | |
1326 | csi = (struct csrow_info *) (((char *) mci) + ((unsigned long) csi)); | |
1327 | chi = (struct channel_info *) (((char *) mci) + ((unsigned long) chi)); | |
1328 | pvt = sz_pvt ? (((char *) mci) + ((unsigned long) pvt)) : NULL; | |
1329 | ||
1330 | memset(mci, 0, size); /* clear all fields */ | |
1331 | ||
1332 | mci->csrows = csi; | |
1333 | mci->pvt_info = pvt; | |
1334 | mci->nr_csrows = nr_csrows; | |
1335 | ||
1336 | for (row = 0; row < nr_csrows; row++) { | |
1337 | csrow = &csi[row]; | |
1338 | csrow->csrow_idx = row; | |
1339 | csrow->mci = mci; | |
1340 | csrow->nr_channels = nr_chans; | |
1341 | chp = &chi[row * nr_chans]; | |
1342 | csrow->channels = chp; | |
1343 | ||
1344 | for (chn = 0; chn < nr_chans; chn++) { | |
1345 | chan = &chp[chn]; | |
1346 | chan->chan_idx = chn; | |
1347 | chan->csrow = csrow; | |
1348 | } | |
1349 | } | |
1350 | ||
1351 | return mci; | |
1352 | } | |
1353 | ||
1354 | ||
1355 | EXPORT_SYMBOL(edac_mc_free); | |
1356 | ||
1357 | /** | |
1358 | * edac_mc_free: Free a previously allocated 'mci' structure | |
1359 | * @mci: pointer to a struct mem_ctl_info structure | |
1360 | * | |
1361 | * Free up a previously allocated mci structure | |
1362 | * A MCI structure can be in 2 states after being allocated | |
1363 | * by edac_mc_alloc(). | |
1364 | * 1) Allocated in a MC driver's probe, but not yet committed | |
1365 | * 2) Allocated and committed, by a call to edac_mc_add_mc() | |
1366 | * edac_mc_add_mc() is the function that adds the sysfs entries | |
1367 | * thus, this free function must determine which state the 'mci' | |
1368 | * structure is in, then either free it directly or | |
1369 | * perform kobject cleanup by calling edac_remove_sysfs_mci_device(). | |
1370 | * | |
1371 | * VOID Return | |
1372 | */ | |
1373 | void edac_mc_free(struct mem_ctl_info *mci) | |
1374 | { | |
1375 | /* only if sysfs entries for this mci instance exist | |
1376 | * do we remove them and defer the actual kfree via | |
1377 | * the kobject 'release()' callback. | |
1378 | * | |
1379 | * Otherwise, do a straight kfree now. | |
1380 | */ | |
1381 | if (mci->sysfs_active == MCI_SYSFS_ACTIVE) | |
1382 | edac_remove_sysfs_mci_device(mci); | |
1383 | else | |
1384 | kfree(mci); | |
1385 | } | |
1386 | ||
1387 | ||
1388 | ||
1389 | EXPORT_SYMBOL(edac_mc_find_mci_by_pdev); | |
1390 | ||
1391 | struct mem_ctl_info *edac_mc_find_mci_by_pdev(struct pci_dev *pdev) | |
1392 | { | |
1393 | struct mem_ctl_info *mci; | |
1394 | struct list_head *item; | |
1395 | ||
1396 | debugf3("MC: " __FILE__ ": %s()\n", __func__); | |
1397 | ||
1398 | list_for_each(item, &mc_devices) { | |
1399 | mci = list_entry(item, struct mem_ctl_info, link); | |
1400 | ||
1401 | if (mci->pdev == pdev) | |
1402 | return mci; | |
1403 | } | |
1404 | ||
1405 | return NULL; | |
1406 | } | |
1407 | ||
1408 | static int add_mc_to_global_list (struct mem_ctl_info *mci) | |
1409 | { | |
1410 | struct list_head *item, *insert_before; | |
1411 | struct mem_ctl_info *p; | |
1412 | int i; | |
1413 | ||
1414 | if (list_empty(&mc_devices)) { | |
1415 | mci->mc_idx = 0; | |
1416 | insert_before = &mc_devices; | |
1417 | } else { | |
1418 | if (edac_mc_find_mci_by_pdev(mci->pdev)) { | |
1419 | printk(KERN_WARNING | |
1420 | "EDAC MC: %s (%s) %s %s already assigned %d\n", | |
1421 | mci->pdev->dev.bus_id, pci_name(mci->pdev), | |
1422 | mci->mod_name, mci->ctl_name, mci->mc_idx); | |
1423 | return 1; | |
1424 | } | |
1425 | ||
1426 | insert_before = NULL; | |
1427 | i = 0; | |
1428 | ||
1429 | list_for_each(item, &mc_devices) { | |
1430 | p = list_entry(item, struct mem_ctl_info, link); | |
1431 | ||
1432 | if (p->mc_idx != i) { | |
1433 | insert_before = item; | |
1434 | break; | |
1435 | } | |
1436 | ||
1437 | i++; | |
1438 | } | |
1439 | ||
1440 | mci->mc_idx = i; | |
1441 | ||
1442 | if (insert_before == NULL) | |
1443 | insert_before = &mc_devices; | |
1444 | } | |
1445 | ||
1446 | list_add_tail_rcu(&mci->link, insert_before); | |
1447 | return 0; | |
1448 | } | |
1449 | ||
1450 | ||
1451 | ||
1452 | EXPORT_SYMBOL(edac_mc_add_mc); | |
1453 | ||
1454 | /** | |
1455 | * edac_mc_add_mc: Insert the 'mci' structure into the mci global list | |
1456 | * @mci: pointer to the mci structure to be added to the list | |
1457 | * | |
1458 | * Return: | |
1459 | * 0 Success | |
1460 | * !0 Failure | |
1461 | */ | |
1462 | ||
1463 | /* FIXME - should a warning be printed if no error detection? correction? */ | |
1464 | int edac_mc_add_mc(struct mem_ctl_info *mci) | |
1465 | { | |
1466 | int rc = 1; | |
1467 | ||
1468 | debugf0("MC: " __FILE__ ": %s()\n", __func__); | |
1469 | #ifdef CONFIG_EDAC_DEBUG | |
1470 | if (edac_debug_level >= 3) | |
1471 | edac_mc_dump_mci(mci); | |
1472 | if (edac_debug_level >= 4) { | |
1473 | int i; | |
1474 | ||
1475 | for (i = 0; i < mci->nr_csrows; i++) { | |
1476 | int j; | |
1477 | edac_mc_dump_csrow(&mci->csrows[i]); | |
1478 | for (j = 0; j < mci->csrows[i].nr_channels; j++) | |
1479 | edac_mc_dump_channel(&mci->csrows[i]. | |
1480 | channels[j]); | |
1481 | } | |
1482 | } | |
1483 | #endif | |
1484 | down(&mem_ctls_mutex); | |
1485 | ||
1486 | if (add_mc_to_global_list(mci)) | |
1487 | goto finish; | |
1488 | ||
1489 | /* set load time so that error rate can be tracked */ | |
1490 | mci->start_time = jiffies; | |
1491 | ||
1492 | if (edac_create_sysfs_mci_device(mci)) { | |
1493 | printk(KERN_WARNING | |
1494 | "EDAC MC%d: failed to create sysfs device\n", | |
1495 | mci->mc_idx); | |
1496 | /* FIXME - should there be an error code and unwind? */ | |
1497 | goto finish; | |
1498 | } | |
1499 | ||
1500 | /* Report action taken */ | |
1501 | printk(KERN_INFO | |
1502 | "EDAC MC%d: Giving out device to %s %s: PCI %s\n", | |
1503 | mci->mc_idx, mci->mod_name, mci->ctl_name, | |
1504 | pci_name(mci->pdev)); | |
1505 | ||
1506 | ||
1507 | rc = 0; | |
1508 | ||
1509 | finish: | |
1510 | up(&mem_ctls_mutex); | |
1511 | return rc; | |
1512 | } | |
1513 | ||
1514 | ||
1515 | ||
1516 | static void complete_mc_list_del (struct rcu_head *head) | |
1517 | { | |
1518 | struct mem_ctl_info *mci; | |
1519 | ||
1520 | mci = container_of(head, struct mem_ctl_info, rcu); | |
1521 | INIT_LIST_HEAD(&mci->link); | |
1522 | complete(&mci->complete); | |
1523 | } | |
1524 | ||
1525 | static void del_mc_from_global_list (struct mem_ctl_info *mci) | |
1526 | { | |
1527 | list_del_rcu(&mci->link); | |
1528 | init_completion(&mci->complete); | |
1529 | call_rcu(&mci->rcu, complete_mc_list_del); | |
1530 | wait_for_completion(&mci->complete); | |
1531 | } | |
1532 | ||
1533 | EXPORT_SYMBOL(edac_mc_del_mc); | |
1534 | ||
1535 | /** | |
1536 | * edac_mc_del_mc: Remove the specified mci structure from global list | |
1537 | * @mci: Pointer to struct mem_ctl_info structure | |
1538 | * | |
1539 | * Returns: | |
1540 | * 0 Success | |
1541 | * 1 Failure | |
1542 | */ | |
1543 | int edac_mc_del_mc(struct mem_ctl_info *mci) | |
1544 | { | |
1545 | int rc = 1; | |
1546 | ||
1547 | debugf0("MC%d: " __FILE__ ": %s()\n", mci->mc_idx, __func__); | |
1548 | down(&mem_ctls_mutex); | |
1549 | del_mc_from_global_list(mci); | |
1550 | printk(KERN_INFO | |
1551 | "EDAC MC%d: Removed device %d for %s %s: PCI %s\n", | |
1552 | mci->mc_idx, mci->mc_idx, mci->mod_name, mci->ctl_name, | |
1553 | pci_name(mci->pdev)); | |
1554 | rc = 0; | |
1555 | up(&mem_ctls_mutex); | |
1556 | ||
1557 | return rc; | |
1558 | } | |
1559 | ||
1560 | ||
1561 | EXPORT_SYMBOL(edac_mc_scrub_block); | |
1562 | ||
1563 | void edac_mc_scrub_block(unsigned long page, unsigned long offset, | |
1564 | u32 size) | |
1565 | { | |
1566 | struct page *pg; | |
1567 | void *virt_addr; | |
1568 | unsigned long flags = 0; | |
1569 | ||
1570 | debugf3("MC: " __FILE__ ": %s()\n", __func__); | |
1571 | ||
1572 | /* ECC error page was not in our memory. Ignore it. */ | |
1573 | if(!pfn_valid(page)) | |
1574 | return; | |
1575 | ||
1576 | /* Find the actual page structure then map it and fix */ | |
1577 | pg = pfn_to_page(page); | |
1578 | ||
1579 | if (PageHighMem(pg)) | |
1580 | local_irq_save(flags); | |
1581 | ||
1582 | virt_addr = kmap_atomic(pg, KM_BOUNCE_READ); | |
1583 | ||
1584 | /* Perform architecture specific atomic scrub operation */ | |
1585 | atomic_scrub(virt_addr + offset, size); | |
1586 | ||
1587 | /* Unmap and complete */ | |
1588 | kunmap_atomic(virt_addr, KM_BOUNCE_READ); | |
1589 | ||
1590 | if (PageHighMem(pg)) | |
1591 | local_irq_restore(flags); | |
1592 | } | |
1593 | ||
1594 | ||
1595 | /* FIXME - should return -1 */ | |
1596 | EXPORT_SYMBOL(edac_mc_find_csrow_by_page); | |
1597 | ||
1598 | int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci, | |
1599 | unsigned long page) | |
1600 | { | |
1601 | struct csrow_info *csrows = mci->csrows; | |
1602 | int row, i; | |
1603 | ||
1604 | debugf1("MC%d: " __FILE__ ": %s(): 0x%lx\n", mci->mc_idx, __func__, | |
1605 | page); | |
1606 | row = -1; | |
1607 | ||
1608 | for (i = 0; i < mci->nr_csrows; i++) { | |
1609 | struct csrow_info *csrow = &csrows[i]; | |
1610 | ||
1611 | if (csrow->nr_pages == 0) | |
1612 | continue; | |
1613 | ||
1614 | debugf3("MC%d: " __FILE__ | |
1615 | ": %s(): first(0x%lx) page(0x%lx)" | |
1616 | " last(0x%lx) mask(0x%lx)\n", mci->mc_idx, | |
1617 | __func__, csrow->first_page, page, | |
1618 | csrow->last_page, csrow->page_mask); | |
1619 | ||
1620 | if ((page >= csrow->first_page) && | |
1621 | (page <= csrow->last_page) && | |
1622 | ((page & csrow->page_mask) == | |
1623 | (csrow->first_page & csrow->page_mask))) { | |
1624 | row = i; | |
1625 | break; | |
1626 | } | |
1627 | } | |
1628 | ||
1629 | if (row == -1) | |
1630 | printk(KERN_ERR | |
1631 | "EDAC MC%d: could not look up page error address %lx\n", | |
1632 | mci->mc_idx, (unsigned long) page); | |
1633 | ||
1634 | return row; | |
1635 | } | |
1636 | ||
1637 | ||
1638 | EXPORT_SYMBOL(edac_mc_handle_ce); | |
1639 | ||
1640 | /* FIXME - setable log (warning/emerg) levels */ | |
1641 | /* FIXME - integrate with evlog: http://evlog.sourceforge.net/ */ | |
1642 | void edac_mc_handle_ce(struct mem_ctl_info *mci, | |
1643 | unsigned long page_frame_number, | |
1644 | unsigned long offset_in_page, | |
1645 | unsigned long syndrome, int row, int channel, | |
1646 | const char *msg) | |
1647 | { | |
1648 | unsigned long remapped_page; | |
1649 | ||
1650 | debugf3("MC%d: " __FILE__ ": %s()\n", mci->mc_idx, __func__); | |
1651 | ||
1652 | /* FIXME - maybe make panic on INTERNAL ERROR an option */ | |
1653 | if (row >= mci->nr_csrows || row < 0) { | |
1654 | /* something is wrong */ | |
1655 | printk(KERN_ERR | |
1656 | "EDAC MC%d: INTERNAL ERROR: row out of range (%d >= %d)\n", | |
1657 | mci->mc_idx, row, mci->nr_csrows); | |
1658 | edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR"); | |
1659 | return; | |
1660 | } | |
1661 | if (channel >= mci->csrows[row].nr_channels || channel < 0) { | |
1662 | /* something is wrong */ | |
1663 | printk(KERN_ERR | |
1664 | "EDAC MC%d: INTERNAL ERROR: channel out of range " | |
1665 | "(%d >= %d)\n", | |
1666 | mci->mc_idx, channel, mci->csrows[row].nr_channels); | |
1667 | edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR"); | |
1668 | return; | |
1669 | } | |
1670 | ||
1671 | if (log_ce) | |
1672 | /* FIXME - put in DIMM location */ | |
1673 | printk(KERN_WARNING | |
1674 | "EDAC MC%d: CE page 0x%lx, offset 0x%lx," | |
1675 | " grain %d, syndrome 0x%lx, row %d, channel %d," | |
1676 | " label \"%s\": %s\n", mci->mc_idx, | |
1677 | page_frame_number, offset_in_page, | |
1678 | mci->csrows[row].grain, syndrome, row, channel, | |
1679 | mci->csrows[row].channels[channel].label, msg); | |
1680 | ||
1681 | mci->ce_count++; | |
1682 | mci->csrows[row].ce_count++; | |
1683 | mci->csrows[row].channels[channel].ce_count++; | |
1684 | ||
1685 | if (mci->scrub_mode & SCRUB_SW_SRC) { | |
1686 | /* | |
1687 | * Some MC's can remap memory so that it is still available | |
1688 | * at a different address when PCI devices map into memory. | |
1689 | * MC's that can't do this lose the memory where PCI devices | |
1690 | * are mapped. This mapping is MC dependant and so we call | |
1691 | * back into the MC driver for it to map the MC page to | |
1692 | * a physical (CPU) page which can then be mapped to a virtual | |
1693 | * page - which can then be scrubbed. | |
1694 | */ | |
1695 | remapped_page = mci->ctl_page_to_phys ? | |
1696 | mci->ctl_page_to_phys(mci, page_frame_number) : | |
1697 | page_frame_number; | |
1698 | ||
1699 | edac_mc_scrub_block(remapped_page, offset_in_page, | |
1700 | mci->csrows[row].grain); | |
1701 | } | |
1702 | } | |
1703 | ||
1704 | ||
1705 | EXPORT_SYMBOL(edac_mc_handle_ce_no_info); | |
1706 | ||
1707 | void edac_mc_handle_ce_no_info(struct mem_ctl_info *mci, | |
1708 | const char *msg) | |
1709 | { | |
1710 | if (log_ce) | |
1711 | printk(KERN_WARNING | |
1712 | "EDAC MC%d: CE - no information available: %s\n", | |
1713 | mci->mc_idx, msg); | |
1714 | mci->ce_noinfo_count++; | |
1715 | mci->ce_count++; | |
1716 | } | |
1717 | ||
1718 | ||
1719 | EXPORT_SYMBOL(edac_mc_handle_ue); | |
1720 | ||
1721 | void edac_mc_handle_ue(struct mem_ctl_info *mci, | |
1722 | unsigned long page_frame_number, | |
1723 | unsigned long offset_in_page, int row, | |
1724 | const char *msg) | |
1725 | { | |
1726 | int len = EDAC_MC_LABEL_LEN * 4; | |
1727 | char labels[len + 1]; | |
1728 | char *pos = labels; | |
1729 | int chan; | |
1730 | int chars; | |
1731 | ||
1732 | debugf3("MC%d: " __FILE__ ": %s()\n", mci->mc_idx, __func__); | |
1733 | ||
1734 | /* FIXME - maybe make panic on INTERNAL ERROR an option */ | |
1735 | if (row >= mci->nr_csrows || row < 0) { | |
1736 | /* something is wrong */ | |
1737 | printk(KERN_ERR | |
1738 | "EDAC MC%d: INTERNAL ERROR: row out of range (%d >= %d)\n", | |
1739 | mci->mc_idx, row, mci->nr_csrows); | |
1740 | edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR"); | |
1741 | return; | |
1742 | } | |
1743 | ||
1744 | chars = snprintf(pos, len + 1, "%s", | |
1745 | mci->csrows[row].channels[0].label); | |
1746 | len -= chars; | |
1747 | pos += chars; | |
1748 | for (chan = 1; (chan < mci->csrows[row].nr_channels) && (len > 0); | |
1749 | chan++) { | |
1750 | chars = snprintf(pos, len + 1, ":%s", | |
1751 | mci->csrows[row].channels[chan].label); | |
1752 | len -= chars; | |
1753 | pos += chars; | |
1754 | } | |
1755 | ||
1756 | if (log_ue) | |
1757 | printk(KERN_EMERG | |
1758 | "EDAC MC%d: UE page 0x%lx, offset 0x%lx, grain %d, row %d," | |
1759 | " labels \"%s\": %s\n", mci->mc_idx, | |
1760 | page_frame_number, offset_in_page, | |
1761 | mci->csrows[row].grain, row, labels, msg); | |
1762 | ||
1763 | if (panic_on_ue) | |
1764 | panic | |
1765 | ("EDAC MC%d: UE page 0x%lx, offset 0x%lx, grain %d, row %d," | |
1766 | " labels \"%s\": %s\n", mci->mc_idx, | |
1767 | page_frame_number, offset_in_page, | |
1768 | mci->csrows[row].grain, row, labels, msg); | |
1769 | ||
1770 | mci->ue_count++; | |
1771 | mci->csrows[row].ue_count++; | |
1772 | } | |
1773 | ||
1774 | ||
1775 | EXPORT_SYMBOL(edac_mc_handle_ue_no_info); | |
1776 | ||
1777 | void edac_mc_handle_ue_no_info(struct mem_ctl_info *mci, | |
1778 | const char *msg) | |
1779 | { | |
1780 | if (panic_on_ue) | |
1781 | panic("EDAC MC%d: Uncorrected Error", mci->mc_idx); | |
1782 | ||
1783 | if (log_ue) | |
1784 | printk(KERN_WARNING | |
1785 | "EDAC MC%d: UE - no information available: %s\n", | |
1786 | mci->mc_idx, msg); | |
1787 | mci->ue_noinfo_count++; | |
1788 | mci->ue_count++; | |
1789 | } | |
1790 | ||
1791 | ||
1792 | #ifdef CONFIG_PCI | |
1793 | ||
1794 | static u16 get_pci_parity_status(struct pci_dev *dev, int secondary) | |
1795 | { | |
1796 | int where; | |
1797 | u16 status; | |
1798 | ||
1799 | where = secondary ? PCI_SEC_STATUS : PCI_STATUS; | |
1800 | pci_read_config_word(dev, where, &status); | |
1801 | ||
1802 | /* If we get back 0xFFFF then we must suspect that the card has been pulled but | |
1803 | the Linux PCI layer has not yet finished cleaning up. We don't want to report | |
1804 | on such devices */ | |
1805 | ||
1806 | if (status == 0xFFFF) { | |
1807 | u32 sanity; | |
1808 | pci_read_config_dword(dev, 0, &sanity); | |
1809 | if (sanity == 0xFFFFFFFF) | |
1810 | return 0; | |
1811 | } | |
1812 | status &= PCI_STATUS_DETECTED_PARITY | PCI_STATUS_SIG_SYSTEM_ERROR | | |
1813 | PCI_STATUS_PARITY; | |
1814 | ||
1815 | if (status) | |
1816 | /* reset only the bits we are interested in */ | |
1817 | pci_write_config_word(dev, where, status); | |
1818 | ||
1819 | return status; | |
1820 | } | |
1821 | ||
1822 | typedef void (*pci_parity_check_fn_t) (struct pci_dev *dev); | |
1823 | ||
1824 | /* Clear any PCI parity errors logged by this device. */ | |
1825 | static void edac_pci_dev_parity_clear( struct pci_dev *dev ) | |
1826 | { | |
1827 | u8 header_type; | |
1828 | ||
1829 | get_pci_parity_status(dev, 0); | |
1830 | ||
1831 | /* read the device TYPE, looking for bridges */ | |
1832 | pci_read_config_byte(dev, PCI_HEADER_TYPE, &header_type); | |
1833 | ||
1834 | if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) | |
1835 | get_pci_parity_status(dev, 1); | |
1836 | } | |
1837 | ||
1838 | /* | |
1839 | * PCI Parity polling | |
1840 | * | |
1841 | */ | |
1842 | static void edac_pci_dev_parity_test(struct pci_dev *dev) | |
1843 | { | |
1844 | u16 status; | |
1845 | u8 header_type; | |
1846 | ||
1847 | /* read the STATUS register on this device | |
1848 | */ | |
1849 | status = get_pci_parity_status(dev, 0); | |
1850 | ||
1851 | debugf2("PCI STATUS= 0x%04x %s\n", status, dev->dev.bus_id ); | |
1852 | ||
1853 | /* check the status reg for errors */ | |
1854 | if (status) { | |
1855 | if (status & (PCI_STATUS_SIG_SYSTEM_ERROR)) | |
1856 | printk(KERN_CRIT | |
1857 | "EDAC PCI- " | |
1858 | "Signaled System Error on %s\n", | |
1859 | pci_name (dev)); | |
1860 | ||
1861 | if (status & (PCI_STATUS_PARITY)) { | |
1862 | printk(KERN_CRIT | |
1863 | "EDAC PCI- " | |
1864 | "Master Data Parity Error on %s\n", | |
1865 | pci_name (dev)); | |
1866 | ||
1867 | atomic_inc(&pci_parity_count); | |
1868 | } | |
1869 | ||
1870 | if (status & (PCI_STATUS_DETECTED_PARITY)) { | |
1871 | printk(KERN_CRIT | |
1872 | "EDAC PCI- " | |
1873 | "Detected Parity Error on %s\n", | |
1874 | pci_name (dev)); | |
1875 | ||
1876 | atomic_inc(&pci_parity_count); | |
1877 | } | |
1878 | } | |
1879 | ||
1880 | /* read the device TYPE, looking for bridges */ | |
1881 | pci_read_config_byte(dev, PCI_HEADER_TYPE, &header_type); | |
1882 | ||
1883 | debugf2("PCI HEADER TYPE= 0x%02x %s\n", header_type, dev->dev.bus_id ); | |
1884 | ||
1885 | if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { | |
1886 | /* On bridges, need to examine secondary status register */ | |
1887 | status = get_pci_parity_status(dev, 1); | |
1888 | ||
1889 | debugf2("PCI SEC_STATUS= 0x%04x %s\n", | |
1890 | status, dev->dev.bus_id ); | |
1891 | ||
1892 | /* check the secondary status reg for errors */ | |
1893 | if (status) { | |
1894 | if (status & (PCI_STATUS_SIG_SYSTEM_ERROR)) | |
1895 | printk(KERN_CRIT | |
1896 | "EDAC PCI-Bridge- " | |
1897 | "Signaled System Error on %s\n", | |
1898 | pci_name (dev)); | |
1899 | ||
1900 | if (status & (PCI_STATUS_PARITY)) { | |
1901 | printk(KERN_CRIT | |
1902 | "EDAC PCI-Bridge- " | |
1903 | "Master Data Parity Error on %s\n", | |
1904 | pci_name (dev)); | |
1905 | ||
1906 | atomic_inc(&pci_parity_count); | |
1907 | } | |
1908 | ||
1909 | if (status & (PCI_STATUS_DETECTED_PARITY)) { | |
1910 | printk(KERN_CRIT | |
1911 | "EDAC PCI-Bridge- " | |
1912 | "Detected Parity Error on %s\n", | |
1913 | pci_name (dev)); | |
1914 | ||
1915 | atomic_inc(&pci_parity_count); | |
1916 | } | |
1917 | } | |
1918 | } | |
1919 | } | |
1920 | ||
1921 | /* | |
1922 | * check_dev_on_list: Scan for a PCI device on a white/black list | |
1923 | * @list: an EDAC &edac_pci_device_list white/black list pointer | |
1924 | * @free_index: index of next free entry on the list | |
1925 | * @pci_dev: PCI Device pointer | |
1926 | * | |
1927 | * see if list contains the device. | |
1928 | * | |
1929 | * Returns: 0 not found | |
1930 | * 1 found on list | |
1931 | */ | |
1932 | static int check_dev_on_list(struct edac_pci_device_list *list, int free_index, | |
1933 | struct pci_dev *dev) | |
1934 | { | |
1935 | int i; | |
1936 | int rc = 0; /* Assume not found */ | |
1937 | unsigned short vendor=dev->vendor; | |
1938 | unsigned short device=dev->device; | |
1939 | ||
1940 | /* Scan the list, looking for a vendor/device match | |
1941 | */ | |
1942 | for (i = 0; i < free_index; i++, list++ ) { | |
1943 | if ( (list->vendor == vendor ) && | |
1944 | (list->device == device )) { | |
1945 | rc = 1; | |
1946 | break; | |
1947 | } | |
1948 | } | |
1949 | ||
1950 | return rc; | |
1951 | } | |
1952 | ||
1953 | /* | |
1954 | * pci_dev parity list iterator | |
1955 | * Scan the PCI device list for one iteration, looking for SERRORs | |
1956 | * Master Parity ERRORS or Parity ERRORs on primary or secondary devices | |
1957 | */ | |
1958 | static inline void edac_pci_dev_parity_iterator(pci_parity_check_fn_t fn) | |
1959 | { | |
1960 | struct pci_dev *dev=NULL; | |
1961 | ||
1962 | /* request for kernel access to the next PCI device, if any, | |
1963 | * and while we are looking at it have its reference count | |
1964 | * bumped until we are done with it | |
1965 | */ | |
1966 | while((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { | |
1967 | ||
1968 | /* if whitelist exists then it has priority, so only scan those | |
1969 | * devices on the whitelist | |
1970 | */ | |
1971 | if (pci_whitelist_count > 0 ) { | |
1972 | if (check_dev_on_list(pci_whitelist, | |
1973 | pci_whitelist_count, dev)) | |
1974 | fn(dev); | |
1975 | } else { | |
1976 | /* | |
1977 | * if no whitelist, then check if this devices is | |
1978 | * blacklisted | |
1979 | */ | |
1980 | if (!check_dev_on_list(pci_blacklist, | |
1981 | pci_blacklist_count, dev)) | |
1982 | fn(dev); | |
1983 | } | |
1984 | } | |
1985 | } | |
1986 | ||
1987 | static void do_pci_parity_check(void) | |
1988 | { | |
1989 | unsigned long flags; | |
1990 | int before_count; | |
1991 | ||
1992 | debugf3("MC: " __FILE__ ": %s()\n", __func__); | |
1993 | ||
1994 | if (!check_pci_parity) | |
1995 | return; | |
1996 | ||
1997 | before_count = atomic_read(&pci_parity_count); | |
1998 | ||
1999 | /* scan all PCI devices looking for a Parity Error on devices and | |
2000 | * bridges | |
2001 | */ | |
2002 | local_irq_save(flags); | |
2003 | edac_pci_dev_parity_iterator(edac_pci_dev_parity_test); | |
2004 | local_irq_restore(flags); | |
2005 | ||
2006 | /* Only if operator has selected panic on PCI Error */ | |
2007 | if (panic_on_pci_parity) { | |
2008 | /* If the count is different 'after' from 'before' */ | |
2009 | if (before_count != atomic_read(&pci_parity_count)) | |
2010 | panic("EDAC: PCI Parity Error"); | |
2011 | } | |
2012 | } | |
2013 | ||
2014 | ||
2015 | static inline void clear_pci_parity_errors(void) | |
2016 | { | |
2017 | /* Clear any PCI bus parity errors that devices initially have logged | |
2018 | * in their registers. | |
2019 | */ | |
2020 | edac_pci_dev_parity_iterator(edac_pci_dev_parity_clear); | |
2021 | } | |
2022 | ||
2023 | ||
2024 | #else /* CONFIG_PCI */ | |
2025 | ||
2026 | ||
2027 | static inline void do_pci_parity_check(void) | |
2028 | { | |
2029 | /* no-op */ | |
2030 | } | |
2031 | ||
2032 | ||
2033 | static inline void clear_pci_parity_errors(void) | |
2034 | { | |
2035 | /* no-op */ | |
2036 | } | |
2037 | ||
2038 | ||
2039 | #endif /* CONFIG_PCI */ | |
2040 | ||
2041 | /* | |
2042 | * Iterate over all MC instances and check for ECC, et al, errors | |
2043 | */ | |
2044 | static inline void check_mc_devices (void) | |
2045 | { | |
2046 | unsigned long flags; | |
2047 | struct list_head *item; | |
2048 | struct mem_ctl_info *mci; | |
2049 | ||
2050 | debugf3("MC: " __FILE__ ": %s()\n", __func__); | |
2051 | ||
2052 | /* during poll, have interrupts off */ | |
2053 | local_irq_save(flags); | |
2054 | ||
2055 | list_for_each(item, &mc_devices) { | |
2056 | mci = list_entry(item, struct mem_ctl_info, link); | |
2057 | ||
2058 | if (mci->edac_check != NULL) | |
2059 | mci->edac_check(mci); | |
2060 | } | |
2061 | ||
2062 | local_irq_restore(flags); | |
2063 | } | |
2064 | ||
2065 | ||
2066 | /* | |
2067 | * Check MC status every poll_msec. | |
2068 | * Check PCI status every poll_msec as well. | |
2069 | * | |
2070 | * This where the work gets done for edac. | |
2071 | * | |
2072 | * SMP safe, doesn't use NMI, and auto-rate-limits. | |
2073 | */ | |
2074 | static void do_edac_check(void) | |
2075 | { | |
2076 | ||
2077 | debugf3("MC: " __FILE__ ": %s()\n", __func__); | |
2078 | ||
2079 | check_mc_devices(); | |
2080 | ||
2081 | do_pci_parity_check(); | |
2082 | } | |
2083 | ||
2084 | ||
2085 | /* | |
2086 | * EDAC thread state information | |
2087 | */ | |
2088 | struct bs_thread_info | |
2089 | { | |
2090 | struct task_struct *task; | |
2091 | struct completion *event; | |
2092 | char *name; | |
2093 | void (*run)(void); | |
2094 | }; | |
2095 | ||
2096 | static struct bs_thread_info bs_thread; | |
2097 | ||
2098 | /* | |
2099 | * edac_kernel_thread | |
2100 | * This the kernel thread that processes edac operations | |
2101 | * in a normal thread environment | |
2102 | */ | |
2103 | static int edac_kernel_thread(void *arg) | |
2104 | { | |
2105 | struct bs_thread_info *thread = (struct bs_thread_info *) arg; | |
2106 | ||
2107 | /* detach thread */ | |
2108 | daemonize(thread->name); | |
2109 | ||
2110 | current->exit_signal = SIGCHLD; | |
2111 | allow_signal(SIGKILL); | |
2112 | thread->task = current; | |
2113 | ||
2114 | /* indicate to starting task we have started */ | |
2115 | complete(thread->event); | |
2116 | ||
2117 | /* loop forever, until we are told to stop */ | |
2118 | while(thread->run != NULL) { | |
2119 | void (*run)(void); | |
2120 | ||
2121 | /* call the function to check the memory controllers */ | |
2122 | run = thread->run; | |
2123 | if (run) | |
2124 | run(); | |
2125 | ||
2126 | if (signal_pending(current)) | |
2127 | flush_signals(current); | |
2128 | ||
2129 | /* ensure we are interruptable */ | |
2130 | set_current_state(TASK_INTERRUPTIBLE); | |
2131 | ||
2132 | /* goto sleep for the interval */ | |
2133 | schedule_timeout((HZ * poll_msec) / 1000); | |
2134 | try_to_freeze(); | |
2135 | } | |
2136 | ||
2137 | /* notify waiter that we are exiting */ | |
2138 | complete(thread->event); | |
2139 | ||
2140 | return 0; | |
2141 | } | |
2142 | ||
2143 | /* | |
2144 | * edac_mc_init | |
2145 | * module initialization entry point | |
2146 | */ | |
2147 | static int __init edac_mc_init(void) | |
2148 | { | |
2149 | int ret; | |
2150 | struct completion event; | |
2151 | ||
2152 | printk(KERN_INFO "MC: " __FILE__ " version " EDAC_MC_VERSION "\n"); | |
2153 | ||
2154 | /* | |
2155 | * Harvest and clear any boot/initialization PCI parity errors | |
2156 | * | |
2157 | * FIXME: This only clears errors logged by devices present at time of | |
2158 | * module initialization. We should also do an initial clear | |
2159 | * of each newly hotplugged device. | |
2160 | */ | |
2161 | clear_pci_parity_errors(); | |
2162 | ||
2163 | /* perform check for first time to harvest boot leftovers */ | |
2164 | do_edac_check(); | |
2165 | ||
2166 | /* Create the MC sysfs entires */ | |
2167 | if (edac_sysfs_memctrl_setup()) { | |
2168 | printk(KERN_ERR "EDAC MC: Error initializing sysfs code\n"); | |
2169 | return -ENODEV; | |
2170 | } | |
2171 | ||
2172 | /* Create the PCI parity sysfs entries */ | |
2173 | if (edac_sysfs_pci_setup()) { | |
2174 | edac_sysfs_memctrl_teardown(); | |
2175 | printk(KERN_ERR "EDAC PCI: Error initializing sysfs code\n"); | |
2176 | return -ENODEV; | |
2177 | } | |
2178 | ||
2179 | /* Create our kernel thread */ | |
2180 | init_completion(&event); | |
2181 | bs_thread.event = &event; | |
2182 | bs_thread.name = "kedac"; | |
2183 | bs_thread.run = do_edac_check; | |
2184 | ||
2185 | /* create our kernel thread */ | |
2186 | ret = kernel_thread(edac_kernel_thread, &bs_thread, CLONE_KERNEL); | |
2187 | if (ret < 0) { | |
2188 | /* remove the sysfs entries */ | |
2189 | edac_sysfs_memctrl_teardown(); | |
2190 | edac_sysfs_pci_teardown(); | |
2191 | return -ENOMEM; | |
2192 | } | |
2193 | ||
2194 | /* wait for our kernel theard ack that it is up and running */ | |
2195 | wait_for_completion(&event); | |
2196 | ||
2197 | return 0; | |
2198 | } | |
2199 | ||
2200 | ||
2201 | /* | |
2202 | * edac_mc_exit() | |
2203 | * module exit/termination functioni | |
2204 | */ | |
2205 | static void __exit edac_mc_exit(void) | |
2206 | { | |
2207 | struct completion event; | |
2208 | ||
2209 | debugf0("MC: " __FILE__ ": %s()\n", __func__); | |
2210 | ||
2211 | init_completion(&event); | |
2212 | bs_thread.event = &event; | |
2213 | ||
2214 | /* As soon as ->run is set to NULL, the task could disappear, | |
2215 | * so we need to hold tasklist_lock until we have sent the signal | |
2216 | */ | |
2217 | read_lock(&tasklist_lock); | |
2218 | bs_thread.run = NULL; | |
2219 | send_sig(SIGKILL, bs_thread.task, 1); | |
2220 | read_unlock(&tasklist_lock); | |
2221 | wait_for_completion(&event); | |
2222 | ||
2223 | /* tear down the sysfs device */ | |
2224 | edac_sysfs_memctrl_teardown(); | |
2225 | edac_sysfs_pci_teardown(); | |
2226 | } | |
2227 | ||
2228 | ||
2229 | ||
2230 | ||
2231 | module_init(edac_mc_init); | |
2232 | module_exit(edac_mc_exit); | |
2233 | ||
2234 | MODULE_LICENSE("GPL"); | |
2235 | MODULE_AUTHOR("Linux Networx (http://lnxi.com) Thayne Harbaugh et al\n" | |
2236 | "Based on.work by Dan Hollis et al"); | |
2237 | MODULE_DESCRIPTION("Core library routines for MC reporting"); | |
2238 | ||
2239 | module_param(panic_on_ue, int, 0644); | |
2240 | MODULE_PARM_DESC(panic_on_ue, "Panic on uncorrected error: 0=off 1=on"); | |
2241 | module_param(check_pci_parity, int, 0644); | |
2242 | MODULE_PARM_DESC(check_pci_parity, "Check for PCI bus parity errors: 0=off 1=on"); | |
2243 | module_param(panic_on_pci_parity, int, 0644); | |
2244 | MODULE_PARM_DESC(panic_on_pci_parity, "Panic on PCI Bus Parity error: 0=off 1=on"); | |
2245 | module_param(log_ue, int, 0644); | |
2246 | MODULE_PARM_DESC(log_ue, "Log uncorrectable error to console: 0=off 1=on"); | |
2247 | module_param(log_ce, int, 0644); | |
2248 | MODULE_PARM_DESC(log_ce, "Log correctable error to console: 0=off 1=on"); | |
2249 | module_param(poll_msec, int, 0644); | |
2250 | MODULE_PARM_DESC(poll_msec, "Polling period in milliseconds"); | |
2251 | #ifdef CONFIG_EDAC_DEBUG | |
2252 | module_param(edac_debug_level, int, 0644); | |
2253 | MODULE_PARM_DESC(edac_debug_level, "Debug level"); | |
2254 | #endif |