This source file includes following definitions.
- edac_mc_get_log_ue
- edac_mc_get_log_ce
- edac_mc_get_panic_on_ue
- edac_mc_get_poll_msec
- edac_set_poll_msec
- csrow_ue_count_show
- csrow_ce_count_show
- csrow_size_show
- csrow_mem_type_show
- csrow_dev_type_show
- csrow_edac_mode_show
- channel_dimm_label_show
- channel_dimm_label_store
- channel_ce_count_show
- csrow_attr_release
- csrow_dev_is_visible
- nr_pages_per_csrow
- edac_create_csrow_object
- edac_create_csrow_objects
- edac_delete_csrow_objects
- dimmdev_location_show
- dimmdev_label_show
- dimmdev_label_store
- dimmdev_size_show
- dimmdev_mem_type_show
- dimmdev_dev_type_show
- dimmdev_edac_mode_show
- dimmdev_ce_count_show
- dimmdev_ue_count_show
- dimm_attr_release
- edac_create_dimm_object
- mci_reset_counters_store
- mci_sdram_scrub_rate_store
- mci_sdram_scrub_rate_show
- mci_ue_count_show
- mci_ce_count_show
- mci_ce_noinfo_show
- mci_ue_noinfo_show
- mci_seconds_show
- mci_ctl_name_show
- mci_size_mb_show
- mci_max_location_show
- mci_attr_is_visible
- mci_attr_release
- edac_create_sysfs_mci_device
- edac_remove_sysfs_mci_device
- edac_unregister_sysfs
- mc_attr_release
- edac_mc_sysfs_init
- edac_mc_sysfs_exit
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15 #include <linux/ctype.h>
16 #include <linux/slab.h>
17 #include <linux/edac.h>
18 #include <linux/bug.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/uaccess.h>
21
22 #include "edac_mc.h"
23 #include "edac_module.h"
24
25
26 static int edac_mc_log_ue = 1;
27 static int edac_mc_log_ce = 1;
28 static int edac_mc_panic_on_ue;
29 static unsigned int edac_mc_poll_msec = 1000;
30
31
32 int edac_mc_get_log_ue(void)
33 {
34 return edac_mc_log_ue;
35 }
36
37 int edac_mc_get_log_ce(void)
38 {
39 return edac_mc_log_ce;
40 }
41
42 int edac_mc_get_panic_on_ue(void)
43 {
44 return edac_mc_panic_on_ue;
45 }
46
47
48 unsigned int edac_mc_get_poll_msec(void)
49 {
50 return edac_mc_poll_msec;
51 }
52
53 static int edac_set_poll_msec(const char *val, const struct kernel_param *kp)
54 {
55 unsigned int i;
56 int ret;
57
58 if (!val)
59 return -EINVAL;
60
61 ret = kstrtouint(val, 0, &i);
62 if (ret)
63 return ret;
64
65 if (i < 1000)
66 return -EINVAL;
67
68 *((unsigned int *)kp->arg) = i;
69
70
71 edac_mc_reset_delay_period(i);
72
73 return 0;
74 }
75
76
77 module_param(edac_mc_panic_on_ue, int, 0644);
78 MODULE_PARM_DESC(edac_mc_panic_on_ue, "Panic on uncorrected error: 0=off 1=on");
79 module_param(edac_mc_log_ue, int, 0644);
80 MODULE_PARM_DESC(edac_mc_log_ue,
81 "Log uncorrectable error to console: 0=off 1=on");
82 module_param(edac_mc_log_ce, int, 0644);
83 MODULE_PARM_DESC(edac_mc_log_ce,
84 "Log correctable error to console: 0=off 1=on");
85 module_param_call(edac_mc_poll_msec, edac_set_poll_msec, param_get_uint,
86 &edac_mc_poll_msec, 0644);
87 MODULE_PARM_DESC(edac_mc_poll_msec, "Polling period in milliseconds");
88
89 static struct device *mci_pdev;
90
91
92
93
94 static const char * const dev_types[] = {
95 [DEV_UNKNOWN] = "Unknown",
96 [DEV_X1] = "x1",
97 [DEV_X2] = "x2",
98 [DEV_X4] = "x4",
99 [DEV_X8] = "x8",
100 [DEV_X16] = "x16",
101 [DEV_X32] = "x32",
102 [DEV_X64] = "x64"
103 };
104
105 static const char * const edac_caps[] = {
106 [EDAC_UNKNOWN] = "Unknown",
107 [EDAC_NONE] = "None",
108 [EDAC_RESERVED] = "Reserved",
109 [EDAC_PARITY] = "PARITY",
110 [EDAC_EC] = "EC",
111 [EDAC_SECDED] = "SECDED",
112 [EDAC_S2ECD2ED] = "S2ECD2ED",
113 [EDAC_S4ECD4ED] = "S4ECD4ED",
114 [EDAC_S8ECD8ED] = "S8ECD8ED",
115 [EDAC_S16ECD16ED] = "S16ECD16ED"
116 };
117
118 #ifdef CONFIG_EDAC_LEGACY_SYSFS
119
120
121
122
123 #define to_csrow(k) container_of(k, struct csrow_info, dev)
124
125
126
127
128
129 #define DEVICE_ATTR_LEGACY(_name, _mode, _show, _store) \
130 static struct device_attribute dev_attr_legacy_##_name = __ATTR(_name, _mode, _show, _store)
131
132 struct dev_ch_attribute {
133 struct device_attribute attr;
134 unsigned int channel;
135 };
136
137 #define DEVICE_CHANNEL(_name, _mode, _show, _store, _var) \
138 static struct dev_ch_attribute dev_attr_legacy_##_name = \
139 { __ATTR(_name, _mode, _show, _store), (_var) }
140
141 #define to_channel(k) (container_of(k, struct dev_ch_attribute, attr)->channel)
142
143
144 static ssize_t csrow_ue_count_show(struct device *dev,
145 struct device_attribute *mattr, char *data)
146 {
147 struct csrow_info *csrow = to_csrow(dev);
148
149 return sprintf(data, "%u\n", csrow->ue_count);
150 }
151
152 static ssize_t csrow_ce_count_show(struct device *dev,
153 struct device_attribute *mattr, char *data)
154 {
155 struct csrow_info *csrow = to_csrow(dev);
156
157 return sprintf(data, "%u\n", csrow->ce_count);
158 }
159
160 static ssize_t csrow_size_show(struct device *dev,
161 struct device_attribute *mattr, char *data)
162 {
163 struct csrow_info *csrow = to_csrow(dev);
164 int i;
165 u32 nr_pages = 0;
166
167 for (i = 0; i < csrow->nr_channels; i++)
168 nr_pages += csrow->channels[i]->dimm->nr_pages;
169 return sprintf(data, "%u\n", PAGES_TO_MiB(nr_pages));
170 }
171
172 static ssize_t csrow_mem_type_show(struct device *dev,
173 struct device_attribute *mattr, char *data)
174 {
175 struct csrow_info *csrow = to_csrow(dev);
176
177 return sprintf(data, "%s\n", edac_mem_types[csrow->channels[0]->dimm->mtype]);
178 }
179
180 static ssize_t csrow_dev_type_show(struct device *dev,
181 struct device_attribute *mattr, char *data)
182 {
183 struct csrow_info *csrow = to_csrow(dev);
184
185 return sprintf(data, "%s\n", dev_types[csrow->channels[0]->dimm->dtype]);
186 }
187
188 static ssize_t csrow_edac_mode_show(struct device *dev,
189 struct device_attribute *mattr,
190 char *data)
191 {
192 struct csrow_info *csrow = to_csrow(dev);
193
194 return sprintf(data, "%s\n", edac_caps[csrow->channels[0]->dimm->edac_mode]);
195 }
196
197
198 static ssize_t channel_dimm_label_show(struct device *dev,
199 struct device_attribute *mattr,
200 char *data)
201 {
202 struct csrow_info *csrow = to_csrow(dev);
203 unsigned int chan = to_channel(mattr);
204 struct rank_info *rank = csrow->channels[chan];
205
206
207 if (!rank->dimm->label[0])
208 return 0;
209
210 return snprintf(data, sizeof(rank->dimm->label) + 1, "%s\n",
211 rank->dimm->label);
212 }
213
214 static ssize_t channel_dimm_label_store(struct device *dev,
215 struct device_attribute *mattr,
216 const char *data, size_t count)
217 {
218 struct csrow_info *csrow = to_csrow(dev);
219 unsigned int chan = to_channel(mattr);
220 struct rank_info *rank = csrow->channels[chan];
221 size_t copy_count = count;
222
223 if (count == 0)
224 return -EINVAL;
225
226 if (data[count - 1] == '\0' || data[count - 1] == '\n')
227 copy_count -= 1;
228
229 if (copy_count == 0 || copy_count >= sizeof(rank->dimm->label))
230 return -EINVAL;
231
232 strncpy(rank->dimm->label, data, copy_count);
233 rank->dimm->label[copy_count] = '\0';
234
235 return count;
236 }
237
238
239 static ssize_t channel_ce_count_show(struct device *dev,
240 struct device_attribute *mattr, char *data)
241 {
242 struct csrow_info *csrow = to_csrow(dev);
243 unsigned int chan = to_channel(mattr);
244 struct rank_info *rank = csrow->channels[chan];
245
246 return sprintf(data, "%u\n", rank->ce_count);
247 }
248
249
250 DEVICE_ATTR_LEGACY(size_mb, S_IRUGO, csrow_size_show, NULL);
251 DEVICE_ATTR_LEGACY(dev_type, S_IRUGO, csrow_dev_type_show, NULL);
252 DEVICE_ATTR_LEGACY(mem_type, S_IRUGO, csrow_mem_type_show, NULL);
253 DEVICE_ATTR_LEGACY(edac_mode, S_IRUGO, csrow_edac_mode_show, NULL);
254 DEVICE_ATTR_LEGACY(ue_count, S_IRUGO, csrow_ue_count_show, NULL);
255 DEVICE_ATTR_LEGACY(ce_count, S_IRUGO, csrow_ce_count_show, NULL);
256
257
258 static struct attribute *csrow_attrs[] = {
259 &dev_attr_legacy_dev_type.attr,
260 &dev_attr_legacy_mem_type.attr,
261 &dev_attr_legacy_edac_mode.attr,
262 &dev_attr_legacy_size_mb.attr,
263 &dev_attr_legacy_ue_count.attr,
264 &dev_attr_legacy_ce_count.attr,
265 NULL,
266 };
267
268 static const struct attribute_group csrow_attr_grp = {
269 .attrs = csrow_attrs,
270 };
271
272 static const struct attribute_group *csrow_attr_groups[] = {
273 &csrow_attr_grp,
274 NULL
275 };
276
277 static void csrow_attr_release(struct device *dev)
278 {
279
280 }
281
282 static const struct device_type csrow_attr_type = {
283 .groups = csrow_attr_groups,
284 .release = csrow_attr_release,
285 };
286
287
288
289
290
291 DEVICE_CHANNEL(ch0_dimm_label, S_IRUGO | S_IWUSR,
292 channel_dimm_label_show, channel_dimm_label_store, 0);
293 DEVICE_CHANNEL(ch1_dimm_label, S_IRUGO | S_IWUSR,
294 channel_dimm_label_show, channel_dimm_label_store, 1);
295 DEVICE_CHANNEL(ch2_dimm_label, S_IRUGO | S_IWUSR,
296 channel_dimm_label_show, channel_dimm_label_store, 2);
297 DEVICE_CHANNEL(ch3_dimm_label, S_IRUGO | S_IWUSR,
298 channel_dimm_label_show, channel_dimm_label_store, 3);
299 DEVICE_CHANNEL(ch4_dimm_label, S_IRUGO | S_IWUSR,
300 channel_dimm_label_show, channel_dimm_label_store, 4);
301 DEVICE_CHANNEL(ch5_dimm_label, S_IRUGO | S_IWUSR,
302 channel_dimm_label_show, channel_dimm_label_store, 5);
303 DEVICE_CHANNEL(ch6_dimm_label, S_IRUGO | S_IWUSR,
304 channel_dimm_label_show, channel_dimm_label_store, 6);
305 DEVICE_CHANNEL(ch7_dimm_label, S_IRUGO | S_IWUSR,
306 channel_dimm_label_show, channel_dimm_label_store, 7);
307
308
309 static struct attribute *dynamic_csrow_dimm_attr[] = {
310 &dev_attr_legacy_ch0_dimm_label.attr.attr,
311 &dev_attr_legacy_ch1_dimm_label.attr.attr,
312 &dev_attr_legacy_ch2_dimm_label.attr.attr,
313 &dev_attr_legacy_ch3_dimm_label.attr.attr,
314 &dev_attr_legacy_ch4_dimm_label.attr.attr,
315 &dev_attr_legacy_ch5_dimm_label.attr.attr,
316 &dev_attr_legacy_ch6_dimm_label.attr.attr,
317 &dev_attr_legacy_ch7_dimm_label.attr.attr,
318 NULL
319 };
320
321
322 DEVICE_CHANNEL(ch0_ce_count, S_IRUGO,
323 channel_ce_count_show, NULL, 0);
324 DEVICE_CHANNEL(ch1_ce_count, S_IRUGO,
325 channel_ce_count_show, NULL, 1);
326 DEVICE_CHANNEL(ch2_ce_count, S_IRUGO,
327 channel_ce_count_show, NULL, 2);
328 DEVICE_CHANNEL(ch3_ce_count, S_IRUGO,
329 channel_ce_count_show, NULL, 3);
330 DEVICE_CHANNEL(ch4_ce_count, S_IRUGO,
331 channel_ce_count_show, NULL, 4);
332 DEVICE_CHANNEL(ch5_ce_count, S_IRUGO,
333 channel_ce_count_show, NULL, 5);
334 DEVICE_CHANNEL(ch6_ce_count, S_IRUGO,
335 channel_ce_count_show, NULL, 6);
336 DEVICE_CHANNEL(ch7_ce_count, S_IRUGO,
337 channel_ce_count_show, NULL, 7);
338
339
340 static struct attribute *dynamic_csrow_ce_count_attr[] = {
341 &dev_attr_legacy_ch0_ce_count.attr.attr,
342 &dev_attr_legacy_ch1_ce_count.attr.attr,
343 &dev_attr_legacy_ch2_ce_count.attr.attr,
344 &dev_attr_legacy_ch3_ce_count.attr.attr,
345 &dev_attr_legacy_ch4_ce_count.attr.attr,
346 &dev_attr_legacy_ch5_ce_count.attr.attr,
347 &dev_attr_legacy_ch6_ce_count.attr.attr,
348 &dev_attr_legacy_ch7_ce_count.attr.attr,
349 NULL
350 };
351
352 static umode_t csrow_dev_is_visible(struct kobject *kobj,
353 struct attribute *attr, int idx)
354 {
355 struct device *dev = kobj_to_dev(kobj);
356 struct csrow_info *csrow = container_of(dev, struct csrow_info, dev);
357
358 if (idx >= csrow->nr_channels)
359 return 0;
360
361 if (idx >= ARRAY_SIZE(dynamic_csrow_ce_count_attr) - 1) {
362 WARN_ONCE(1, "idx: %d\n", idx);
363 return 0;
364 }
365
366
367 if (!csrow->channels[idx]->dimm->nr_pages)
368 return 0;
369
370 return attr->mode;
371 }
372
373
374 static const struct attribute_group csrow_dev_dimm_group = {
375 .attrs = dynamic_csrow_dimm_attr,
376 .is_visible = csrow_dev_is_visible,
377 };
378
379 static const struct attribute_group csrow_dev_ce_count_group = {
380 .attrs = dynamic_csrow_ce_count_attr,
381 .is_visible = csrow_dev_is_visible,
382 };
383
384 static const struct attribute_group *csrow_dev_groups[] = {
385 &csrow_dev_dimm_group,
386 &csrow_dev_ce_count_group,
387 NULL
388 };
389
390 static inline int nr_pages_per_csrow(struct csrow_info *csrow)
391 {
392 int chan, nr_pages = 0;
393
394 for (chan = 0; chan < csrow->nr_channels; chan++)
395 nr_pages += csrow->channels[chan]->dimm->nr_pages;
396
397 return nr_pages;
398 }
399
400
401 static int edac_create_csrow_object(struct mem_ctl_info *mci,
402 struct csrow_info *csrow, int index)
403 {
404 int err;
405
406 csrow->dev.type = &csrow_attr_type;
407 csrow->dev.groups = csrow_dev_groups;
408 device_initialize(&csrow->dev);
409 csrow->dev.parent = &mci->dev;
410 csrow->mci = mci;
411 dev_set_name(&csrow->dev, "csrow%d", index);
412 dev_set_drvdata(&csrow->dev, csrow);
413
414 err = device_add(&csrow->dev);
415 if (err) {
416 edac_dbg(1, "failure: create device %s\n", dev_name(&csrow->dev));
417 put_device(&csrow->dev);
418 return err;
419 }
420
421 edac_dbg(0, "device %s created\n", dev_name(&csrow->dev));
422
423 return 0;
424 }
425
426
427 static int edac_create_csrow_objects(struct mem_ctl_info *mci)
428 {
429 int err, i;
430 struct csrow_info *csrow;
431
432 for (i = 0; i < mci->nr_csrows; i++) {
433 csrow = mci->csrows[i];
434 if (!nr_pages_per_csrow(csrow))
435 continue;
436 err = edac_create_csrow_object(mci, mci->csrows[i], i);
437 if (err < 0)
438 goto error;
439 }
440 return 0;
441
442 error:
443 for (--i; i >= 0; i--) {
444 csrow = mci->csrows[i];
445 if (!nr_pages_per_csrow(csrow))
446 continue;
447 device_unregister(&mci->csrows[i]->dev);
448 }
449
450 return err;
451 }
452
453 static void edac_delete_csrow_objects(struct mem_ctl_info *mci)
454 {
455 int i;
456 struct csrow_info *csrow;
457
458 for (i = mci->nr_csrows - 1; i >= 0; i--) {
459 csrow = mci->csrows[i];
460 if (!nr_pages_per_csrow(csrow))
461 continue;
462 device_unregister(&mci->csrows[i]->dev);
463 }
464 }
465 #endif
466
467
468
469
470
471 #define to_dimm(k) container_of(k, struct dimm_info, dev)
472
473
474 static ssize_t dimmdev_location_show(struct device *dev,
475 struct device_attribute *mattr, char *data)
476 {
477 struct dimm_info *dimm = to_dimm(dev);
478
479 return edac_dimm_info_location(dimm, data, PAGE_SIZE);
480 }
481
482 static ssize_t dimmdev_label_show(struct device *dev,
483 struct device_attribute *mattr, char *data)
484 {
485 struct dimm_info *dimm = to_dimm(dev);
486
487
488 if (!dimm->label[0])
489 return 0;
490
491 return snprintf(data, sizeof(dimm->label) + 1, "%s\n", dimm->label);
492 }
493
494 static ssize_t dimmdev_label_store(struct device *dev,
495 struct device_attribute *mattr,
496 const char *data,
497 size_t count)
498 {
499 struct dimm_info *dimm = to_dimm(dev);
500 size_t copy_count = count;
501
502 if (count == 0)
503 return -EINVAL;
504
505 if (data[count - 1] == '\0' || data[count - 1] == '\n')
506 copy_count -= 1;
507
508 if (copy_count == 0 || copy_count >= sizeof(dimm->label))
509 return -EINVAL;
510
511 strncpy(dimm->label, data, copy_count);
512 dimm->label[copy_count] = '\0';
513
514 return count;
515 }
516
517 static ssize_t dimmdev_size_show(struct device *dev,
518 struct device_attribute *mattr, char *data)
519 {
520 struct dimm_info *dimm = to_dimm(dev);
521
522 return sprintf(data, "%u\n", PAGES_TO_MiB(dimm->nr_pages));
523 }
524
525 static ssize_t dimmdev_mem_type_show(struct device *dev,
526 struct device_attribute *mattr, char *data)
527 {
528 struct dimm_info *dimm = to_dimm(dev);
529
530 return sprintf(data, "%s\n", edac_mem_types[dimm->mtype]);
531 }
532
533 static ssize_t dimmdev_dev_type_show(struct device *dev,
534 struct device_attribute *mattr, char *data)
535 {
536 struct dimm_info *dimm = to_dimm(dev);
537
538 return sprintf(data, "%s\n", dev_types[dimm->dtype]);
539 }
540
541 static ssize_t dimmdev_edac_mode_show(struct device *dev,
542 struct device_attribute *mattr,
543 char *data)
544 {
545 struct dimm_info *dimm = to_dimm(dev);
546
547 return sprintf(data, "%s\n", edac_caps[dimm->edac_mode]);
548 }
549
550 static ssize_t dimmdev_ce_count_show(struct device *dev,
551 struct device_attribute *mattr,
552 char *data)
553 {
554 struct dimm_info *dimm = to_dimm(dev);
555 u32 count;
556 int off;
557
558 off = EDAC_DIMM_OFF(dimm->mci->layers,
559 dimm->mci->n_layers,
560 dimm->location[0],
561 dimm->location[1],
562 dimm->location[2]);
563 count = dimm->mci->ce_per_layer[dimm->mci->n_layers-1][off];
564 return sprintf(data, "%u\n", count);
565 }
566
567 static ssize_t dimmdev_ue_count_show(struct device *dev,
568 struct device_attribute *mattr,
569 char *data)
570 {
571 struct dimm_info *dimm = to_dimm(dev);
572 u32 count;
573 int off;
574
575 off = EDAC_DIMM_OFF(dimm->mci->layers,
576 dimm->mci->n_layers,
577 dimm->location[0],
578 dimm->location[1],
579 dimm->location[2]);
580 count = dimm->mci->ue_per_layer[dimm->mci->n_layers-1][off];
581 return sprintf(data, "%u\n", count);
582 }
583
584
585 static DEVICE_ATTR(dimm_label, S_IRUGO | S_IWUSR,
586 dimmdev_label_show, dimmdev_label_store);
587 static DEVICE_ATTR(dimm_location, S_IRUGO, dimmdev_location_show, NULL);
588 static DEVICE_ATTR(size, S_IRUGO, dimmdev_size_show, NULL);
589 static DEVICE_ATTR(dimm_mem_type, S_IRUGO, dimmdev_mem_type_show, NULL);
590 static DEVICE_ATTR(dimm_dev_type, S_IRUGO, dimmdev_dev_type_show, NULL);
591 static DEVICE_ATTR(dimm_edac_mode, S_IRUGO, dimmdev_edac_mode_show, NULL);
592 static DEVICE_ATTR(dimm_ce_count, S_IRUGO, dimmdev_ce_count_show, NULL);
593 static DEVICE_ATTR(dimm_ue_count, S_IRUGO, dimmdev_ue_count_show, NULL);
594
595
596 static struct attribute *dimm_attrs[] = {
597 &dev_attr_dimm_label.attr,
598 &dev_attr_dimm_location.attr,
599 &dev_attr_size.attr,
600 &dev_attr_dimm_mem_type.attr,
601 &dev_attr_dimm_dev_type.attr,
602 &dev_attr_dimm_edac_mode.attr,
603 &dev_attr_dimm_ce_count.attr,
604 &dev_attr_dimm_ue_count.attr,
605 NULL,
606 };
607
608 static const struct attribute_group dimm_attr_grp = {
609 .attrs = dimm_attrs,
610 };
611
612 static const struct attribute_group *dimm_attr_groups[] = {
613 &dimm_attr_grp,
614 NULL
615 };
616
617 static void dimm_attr_release(struct device *dev)
618 {
619
620 }
621
622 static const struct device_type dimm_attr_type = {
623 .groups = dimm_attr_groups,
624 .release = dimm_attr_release,
625 };
626
627
628 static int edac_create_dimm_object(struct mem_ctl_info *mci,
629 struct dimm_info *dimm,
630 int index)
631 {
632 int err;
633 dimm->mci = mci;
634
635 dimm->dev.type = &dimm_attr_type;
636 device_initialize(&dimm->dev);
637
638 dimm->dev.parent = &mci->dev;
639 if (mci->csbased)
640 dev_set_name(&dimm->dev, "rank%d", index);
641 else
642 dev_set_name(&dimm->dev, "dimm%d", index);
643 dev_set_drvdata(&dimm->dev, dimm);
644 pm_runtime_forbid(&mci->dev);
645
646 err = device_add(&dimm->dev);
647 if (err) {
648 edac_dbg(1, "failure: create device %s\n", dev_name(&dimm->dev));
649 put_device(&dimm->dev);
650 return err;
651 }
652
653 if (IS_ENABLED(CONFIG_EDAC_DEBUG)) {
654 char location[80];
655
656 edac_dimm_info_location(dimm, location, sizeof(location));
657 edac_dbg(0, "device %s created at location %s\n",
658 dev_name(&dimm->dev), location);
659 }
660
661 return 0;
662 }
663
664
665
666
667
668 #define to_mci(k) container_of(k, struct mem_ctl_info, dev)
669
670 static ssize_t mci_reset_counters_store(struct device *dev,
671 struct device_attribute *mattr,
672 const char *data, size_t count)
673 {
674 struct mem_ctl_info *mci = to_mci(dev);
675 int cnt, row, chan, i;
676 mci->ue_mc = 0;
677 mci->ce_mc = 0;
678 mci->ue_noinfo_count = 0;
679 mci->ce_noinfo_count = 0;
680
681 for (row = 0; row < mci->nr_csrows; row++) {
682 struct csrow_info *ri = mci->csrows[row];
683
684 ri->ue_count = 0;
685 ri->ce_count = 0;
686
687 for (chan = 0; chan < ri->nr_channels; chan++)
688 ri->channels[chan]->ce_count = 0;
689 }
690
691 cnt = 1;
692 for (i = 0; i < mci->n_layers; i++) {
693 cnt *= mci->layers[i].size;
694 memset(mci->ce_per_layer[i], 0, cnt * sizeof(u32));
695 memset(mci->ue_per_layer[i], 0, cnt * sizeof(u32));
696 }
697
698 mci->start_time = jiffies;
699 return count;
700 }
701
702
703
704
705
706
707
708
709
710
711 static ssize_t mci_sdram_scrub_rate_store(struct device *dev,
712 struct device_attribute *mattr,
713 const char *data, size_t count)
714 {
715 struct mem_ctl_info *mci = to_mci(dev);
716 unsigned long bandwidth = 0;
717 int new_bw = 0;
718
719 if (kstrtoul(data, 10, &bandwidth) < 0)
720 return -EINVAL;
721
722 new_bw = mci->set_sdram_scrub_rate(mci, bandwidth);
723 if (new_bw < 0) {
724 edac_printk(KERN_WARNING, EDAC_MC,
725 "Error setting scrub rate to: %lu\n", bandwidth);
726 return -EINVAL;
727 }
728
729 return count;
730 }
731
732
733
734
735 static ssize_t mci_sdram_scrub_rate_show(struct device *dev,
736 struct device_attribute *mattr,
737 char *data)
738 {
739 struct mem_ctl_info *mci = to_mci(dev);
740 int bandwidth = 0;
741
742 bandwidth = mci->get_sdram_scrub_rate(mci);
743 if (bandwidth < 0) {
744 edac_printk(KERN_DEBUG, EDAC_MC, "Error reading scrub rate\n");
745 return bandwidth;
746 }
747
748 return sprintf(data, "%d\n", bandwidth);
749 }
750
751
752 static ssize_t mci_ue_count_show(struct device *dev,
753 struct device_attribute *mattr,
754 char *data)
755 {
756 struct mem_ctl_info *mci = to_mci(dev);
757
758 return sprintf(data, "%d\n", mci->ue_mc);
759 }
760
761 static ssize_t mci_ce_count_show(struct device *dev,
762 struct device_attribute *mattr,
763 char *data)
764 {
765 struct mem_ctl_info *mci = to_mci(dev);
766
767 return sprintf(data, "%d\n", mci->ce_mc);
768 }
769
770 static ssize_t mci_ce_noinfo_show(struct device *dev,
771 struct device_attribute *mattr,
772 char *data)
773 {
774 struct mem_ctl_info *mci = to_mci(dev);
775
776 return sprintf(data, "%d\n", mci->ce_noinfo_count);
777 }
778
779 static ssize_t mci_ue_noinfo_show(struct device *dev,
780 struct device_attribute *mattr,
781 char *data)
782 {
783 struct mem_ctl_info *mci = to_mci(dev);
784
785 return sprintf(data, "%d\n", mci->ue_noinfo_count);
786 }
787
788 static ssize_t mci_seconds_show(struct device *dev,
789 struct device_attribute *mattr,
790 char *data)
791 {
792 struct mem_ctl_info *mci = to_mci(dev);
793
794 return sprintf(data, "%ld\n", (jiffies - mci->start_time) / HZ);
795 }
796
797 static ssize_t mci_ctl_name_show(struct device *dev,
798 struct device_attribute *mattr,
799 char *data)
800 {
801 struct mem_ctl_info *mci = to_mci(dev);
802
803 return sprintf(data, "%s\n", mci->ctl_name);
804 }
805
806 static ssize_t mci_size_mb_show(struct device *dev,
807 struct device_attribute *mattr,
808 char *data)
809 {
810 struct mem_ctl_info *mci = to_mci(dev);
811 int total_pages = 0, csrow_idx, j;
812
813 for (csrow_idx = 0; csrow_idx < mci->nr_csrows; csrow_idx++) {
814 struct csrow_info *csrow = mci->csrows[csrow_idx];
815
816 for (j = 0; j < csrow->nr_channels; j++) {
817 struct dimm_info *dimm = csrow->channels[j]->dimm;
818
819 total_pages += dimm->nr_pages;
820 }
821 }
822
823 return sprintf(data, "%u\n", PAGES_TO_MiB(total_pages));
824 }
825
826 static ssize_t mci_max_location_show(struct device *dev,
827 struct device_attribute *mattr,
828 char *data)
829 {
830 struct mem_ctl_info *mci = to_mci(dev);
831 int i;
832 char *p = data;
833
834 for (i = 0; i < mci->n_layers; i++) {
835 p += sprintf(p, "%s %d ",
836 edac_layer_name[mci->layers[i].type],
837 mci->layers[i].size - 1);
838 }
839
840 return p - data;
841 }
842
843
844 static DEVICE_ATTR(reset_counters, S_IWUSR, NULL, mci_reset_counters_store);
845
846
847 static DEVICE_ATTR(mc_name, S_IRUGO, mci_ctl_name_show, NULL);
848 static DEVICE_ATTR(size_mb, S_IRUGO, mci_size_mb_show, NULL);
849 static DEVICE_ATTR(seconds_since_reset, S_IRUGO, mci_seconds_show, NULL);
850 static DEVICE_ATTR(ue_noinfo_count, S_IRUGO, mci_ue_noinfo_show, NULL);
851 static DEVICE_ATTR(ce_noinfo_count, S_IRUGO, mci_ce_noinfo_show, NULL);
852 static DEVICE_ATTR(ue_count, S_IRUGO, mci_ue_count_show, NULL);
853 static DEVICE_ATTR(ce_count, S_IRUGO, mci_ce_count_show, NULL);
854 static DEVICE_ATTR(max_location, S_IRUGO, mci_max_location_show, NULL);
855
856
857 static DEVICE_ATTR(sdram_scrub_rate, 0, mci_sdram_scrub_rate_show,
858 mci_sdram_scrub_rate_store);
859
860 static struct attribute *mci_attrs[] = {
861 &dev_attr_reset_counters.attr,
862 &dev_attr_mc_name.attr,
863 &dev_attr_size_mb.attr,
864 &dev_attr_seconds_since_reset.attr,
865 &dev_attr_ue_noinfo_count.attr,
866 &dev_attr_ce_noinfo_count.attr,
867 &dev_attr_ue_count.attr,
868 &dev_attr_ce_count.attr,
869 &dev_attr_max_location.attr,
870 &dev_attr_sdram_scrub_rate.attr,
871 NULL
872 };
873
874 static umode_t mci_attr_is_visible(struct kobject *kobj,
875 struct attribute *attr, int idx)
876 {
877 struct device *dev = kobj_to_dev(kobj);
878 struct mem_ctl_info *mci = to_mci(dev);
879 umode_t mode = 0;
880
881 if (attr != &dev_attr_sdram_scrub_rate.attr)
882 return attr->mode;
883 if (mci->get_sdram_scrub_rate)
884 mode |= S_IRUGO;
885 if (mci->set_sdram_scrub_rate)
886 mode |= S_IWUSR;
887 return mode;
888 }
889
890 static const struct attribute_group mci_attr_grp = {
891 .attrs = mci_attrs,
892 .is_visible = mci_attr_is_visible,
893 };
894
895 static const struct attribute_group *mci_attr_groups[] = {
896 &mci_attr_grp,
897 NULL
898 };
899
900 static void mci_attr_release(struct device *dev)
901 {
902
903 }
904
905 static const struct device_type mci_attr_type = {
906 .groups = mci_attr_groups,
907 .release = mci_attr_release,
908 };
909
910
911
912
913
914
915
916
917
918 int edac_create_sysfs_mci_device(struct mem_ctl_info *mci,
919 const struct attribute_group **groups)
920 {
921 int i, err;
922
923
924 mci->dev.type = &mci_attr_type;
925 device_initialize(&mci->dev);
926
927 mci->dev.parent = mci_pdev;
928 mci->dev.groups = groups;
929 dev_set_name(&mci->dev, "mc%d", mci->mc_idx);
930 dev_set_drvdata(&mci->dev, mci);
931 pm_runtime_forbid(&mci->dev);
932
933 err = device_add(&mci->dev);
934 if (err < 0) {
935 edac_dbg(1, "failure: create device %s\n", dev_name(&mci->dev));
936 put_device(&mci->dev);
937 return err;
938 }
939
940 edac_dbg(0, "device %s created\n", dev_name(&mci->dev));
941
942
943
944
945 for (i = 0; i < mci->tot_dimms; i++) {
946 struct dimm_info *dimm = mci->dimms[i];
947
948 if (!dimm->nr_pages)
949 continue;
950
951 err = edac_create_dimm_object(mci, dimm, i);
952 if (err)
953 goto fail_unregister_dimm;
954 }
955
956 #ifdef CONFIG_EDAC_LEGACY_SYSFS
957 err = edac_create_csrow_objects(mci);
958 if (err < 0)
959 goto fail_unregister_dimm;
960 #endif
961
962 edac_create_debugfs_nodes(mci);
963 return 0;
964
965 fail_unregister_dimm:
966 for (i--; i >= 0; i--) {
967 struct dimm_info *dimm = mci->dimms[i];
968 if (!dimm->nr_pages)
969 continue;
970
971 device_unregister(&dimm->dev);
972 }
973 device_unregister(&mci->dev);
974
975 return err;
976 }
977
978
979
980
981 void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci)
982 {
983 int i;
984
985 edac_dbg(0, "\n");
986
987 #ifdef CONFIG_EDAC_DEBUG
988 edac_debugfs_remove_recursive(mci->debugfs);
989 #endif
990 #ifdef CONFIG_EDAC_LEGACY_SYSFS
991 edac_delete_csrow_objects(mci);
992 #endif
993
994 for (i = 0; i < mci->tot_dimms; i++) {
995 struct dimm_info *dimm = mci->dimms[i];
996 if (dimm->nr_pages == 0)
997 continue;
998 edac_dbg(1, "unregistering device %s\n", dev_name(&dimm->dev));
999 device_unregister(&dimm->dev);
1000 }
1001 }
1002
1003 void edac_unregister_sysfs(struct mem_ctl_info *mci)
1004 {
1005 edac_dbg(1, "unregistering device %s\n", dev_name(&mci->dev));
1006 device_unregister(&mci->dev);
1007 }
1008
1009 static void mc_attr_release(struct device *dev)
1010 {
1011
1012
1013
1014
1015
1016 edac_dbg(1, "device %s released\n", dev_name(dev));
1017 kfree(dev);
1018 }
1019
1020 static const struct device_type mc_attr_type = {
1021 .release = mc_attr_release,
1022 };
1023
1024
1025
1026 int __init edac_mc_sysfs_init(void)
1027 {
1028 int err;
1029
1030 mci_pdev = kzalloc(sizeof(*mci_pdev), GFP_KERNEL);
1031 if (!mci_pdev)
1032 return -ENOMEM;
1033
1034 mci_pdev->bus = edac_get_sysfs_subsys();
1035 mci_pdev->type = &mc_attr_type;
1036 device_initialize(mci_pdev);
1037 dev_set_name(mci_pdev, "mc");
1038
1039 err = device_add(mci_pdev);
1040 if (err < 0) {
1041 edac_dbg(1, "failure: create device %s\n", dev_name(mci_pdev));
1042 put_device(mci_pdev);
1043 return err;
1044 }
1045
1046 edac_dbg(0, "device %s created\n", dev_name(mci_pdev));
1047
1048 return 0;
1049 }
1050
1051 void edac_mc_sysfs_exit(void)
1052 {
1053 device_unregister(mci_pdev);
1054 }