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1 | |
2 | /* |
3 | * edac_device.c |
4 | * (C) 2007 www.douglaskthompson.com |
5 | * |
6 | * This file may be distributed under the terms of the |
7 | * GNU General Public License. |
8 | * |
9 | * Written by Doug Thompson <norsk5@xmission.com> |
10 | * |
11 | * edac_device API implementation |
12 | * 19 Jan 2007 |
13 | */ |
14 | |
15 | #include <linux/module.h> |
16 | #include <linux/types.h> |
17 | #include <linux/smp.h> |
18 | #include <linux/init.h> |
19 | #include <linux/sysctl.h> |
20 | #include <linux/highmem.h> |
21 | #include <linux/timer.h> |
22 | #include <linux/slab.h> |
23 | #include <linux/jiffies.h> |
24 | #include <linux/spinlock.h> |
25 | #include <linux/list.h> |
26 | #include <linux/ctype.h> |
27 | #include <linux/workqueue.h> |
28 | #include <asm/uaccess.h> |
29 | #include <asm/page.h> |
30 | |
31 | #include "edac_core.h" |
32 | #include "edac_module.h" |
33 | |
34 | /* lock for the list: 'edac_device_list', manipulation of this list |
35 | * is protected by the 'device_ctls_mutex' lock |
36 | */ |
37 | static DEFINE_MUTEX(device_ctls_mutex); |
38 | static LIST_HEAD(edac_device_list); |
39 | |
40 | #ifdef CONFIG_EDAC_DEBUG |
41 | static void edac_device_dump_device(struct edac_device_ctl_info *edac_dev) |
42 | { |
43 | edac_dbg(3, "\tedac_dev = %p dev_idx=%d\n", |
44 | edac_dev, edac_dev->dev_idx); |
45 | edac_dbg(4, "\tedac_dev->edac_check = %p\n", edac_dev->edac_check); |
46 | edac_dbg(3, "\tdev = %p\n", edac_dev->dev); |
47 | edac_dbg(3, "\tmod_name:ctl_name = %s:%s\n", |
48 | edac_dev->mod_name, edac_dev->ctl_name); |
49 | edac_dbg(3, "\tpvt_info = %p\n\n", edac_dev->pvt_info); |
50 | } |
51 | #endif /* CONFIG_EDAC_DEBUG */ |
52 | |
53 | |
54 | /* |
55 | * edac_device_alloc_ctl_info() |
56 | * Allocate a new edac device control info structure |
57 | * |
58 | * The control structure is allocated in complete chunk |
59 | * from the OS. It is in turn sub allocated to the |
60 | * various objects that compose the structure |
61 | * |
62 | * The structure has a 'nr_instance' array within itself. |
63 | * Each instance represents a major component |
64 | * Example: L1 cache and L2 cache are 2 instance components |
65 | * |
66 | * Within each instance is an array of 'nr_blocks' blockoffsets |
67 | */ |
68 | struct edac_device_ctl_info *edac_device_alloc_ctl_info( |
69 | unsigned sz_private, |
70 | char *edac_device_name, unsigned nr_instances, |
71 | char *edac_block_name, unsigned nr_blocks, |
72 | unsigned offset_value, /* zero, 1, or other based offset */ |
73 | struct edac_dev_sysfs_block_attribute *attrib_spec, unsigned nr_attrib, |
74 | int device_index) |
75 | { |
76 | struct edac_device_ctl_info *dev_ctl; |
77 | struct edac_device_instance *dev_inst, *inst; |
78 | struct edac_device_block *dev_blk, *blk_p, *blk; |
79 | struct edac_dev_sysfs_block_attribute *dev_attrib, *attrib_p, *attrib; |
80 | unsigned total_size; |
81 | unsigned count; |
82 | unsigned instance, block, attr; |
83 | void *pvt, *p; |
84 | int err; |
85 | |
86 | edac_dbg(4, "instances=%d blocks=%d\n", nr_instances, nr_blocks); |
87 | |
88 | /* Calculate the size of memory we need to allocate AND |
89 | * determine the offsets of the various item arrays |
90 | * (instance,block,attrib) from the start of an allocated structure. |
91 | * We want the alignment of each item (instance,block,attrib) |
92 | * to be at least as stringent as what the compiler would |
93 | * provide if we could simply hardcode everything into a single struct. |
94 | */ |
95 | p = NULL; |
96 | dev_ctl = edac_align_ptr(&p, sizeof(*dev_ctl), 1); |
97 | |
98 | /* Calc the 'end' offset past end of ONE ctl_info structure |
99 | * which will become the start of the 'instance' array |
100 | */ |
101 | dev_inst = edac_align_ptr(&p, sizeof(*dev_inst), nr_instances); |
102 | |
103 | /* Calc the 'end' offset past the instance array within the ctl_info |
104 | * which will become the start of the block array |
105 | */ |
106 | count = nr_instances * nr_blocks; |
107 | dev_blk = edac_align_ptr(&p, sizeof(*dev_blk), count); |
108 | |
109 | /* Calc the 'end' offset past the dev_blk array |
110 | * which will become the start of the attrib array, if any. |
111 | */ |
112 | /* calc how many nr_attrib we need */ |
113 | if (nr_attrib > 0) |
114 | count *= nr_attrib; |
115 | dev_attrib = edac_align_ptr(&p, sizeof(*dev_attrib), count); |
116 | |
117 | /* Calc the 'end' offset past the attributes array */ |
118 | pvt = edac_align_ptr(&p, sz_private, 1); |
119 | |
120 | /* 'pvt' now points to where the private data area is. |
121 | * At this point 'pvt' (like dev_inst,dev_blk and dev_attrib) |
122 | * is baselined at ZERO |
123 | */ |
124 | total_size = ((unsigned long)pvt) + sz_private; |
125 | |
126 | /* Allocate the amount of memory for the set of control structures */ |
127 | dev_ctl = kzalloc(total_size, GFP_KERNEL); |
128 | if (dev_ctl == NULL) |
129 | return NULL; |
130 | |
131 | /* Adjust pointers so they point within the actual memory we |
132 | * just allocated rather than an imaginary chunk of memory |
133 | * located at address 0. |
134 | * 'dev_ctl' points to REAL memory, while the others are |
135 | * ZERO based and thus need to be adjusted to point within |
136 | * the allocated memory. |
137 | */ |
138 | dev_inst = (struct edac_device_instance *) |
139 | (((char *)dev_ctl) + ((unsigned long)dev_inst)); |
140 | dev_blk = (struct edac_device_block *) |
141 | (((char *)dev_ctl) + ((unsigned long)dev_blk)); |
142 | dev_attrib = (struct edac_dev_sysfs_block_attribute *) |
143 | (((char *)dev_ctl) + ((unsigned long)dev_attrib)); |
144 | pvt = sz_private ? (((char *)dev_ctl) + ((unsigned long)pvt)) : NULL; |
145 | |
146 | /* Begin storing the information into the control info structure */ |
147 | dev_ctl->dev_idx = device_index; |
148 | dev_ctl->nr_instances = nr_instances; |
149 | dev_ctl->instances = dev_inst; |
150 | dev_ctl->pvt_info = pvt; |
151 | |
152 | /* Default logging of CEs and UEs */ |
153 | dev_ctl->log_ce = 1; |
154 | dev_ctl->log_ue = 1; |
155 | |
156 | /* Name of this edac device */ |
157 | snprintf(dev_ctl->name,sizeof(dev_ctl->name),"%s",edac_device_name); |
158 | |
159 | edac_dbg(4, "edac_dev=%p next after end=%p\n", |
160 | dev_ctl, pvt + sz_private); |
161 | |
162 | /* Initialize every Instance */ |
163 | for (instance = 0; instance < nr_instances; instance++) { |
164 | inst = &dev_inst[instance]; |
165 | inst->ctl = dev_ctl; |
166 | inst->nr_blocks = nr_blocks; |
167 | blk_p = &dev_blk[instance * nr_blocks]; |
168 | inst->blocks = blk_p; |
169 | |
170 | /* name of this instance */ |
171 | snprintf(inst->name, sizeof(inst->name), |
172 | "%s%u", edac_device_name, instance); |
173 | |
174 | /* Initialize every block in each instance */ |
175 | for (block = 0; block < nr_blocks; block++) { |
176 | blk = &blk_p[block]; |
177 | blk->instance = inst; |
178 | snprintf(blk->name, sizeof(blk->name), |
179 | "%s%d", edac_block_name, block+offset_value); |
180 | |
181 | edac_dbg(4, "instance=%d inst_p=%p block=#%d block_p=%p name='%s'\n", |
182 | instance, inst, block, blk, blk->name); |
183 | |
184 | /* if there are NO attributes OR no attribute pointer |
185 | * then continue on to next block iteration |
186 | */ |
187 | if ((nr_attrib == 0) || (attrib_spec == NULL)) |
188 | continue; |
189 | |
190 | /* setup the attribute array for this block */ |
191 | blk->nr_attribs = nr_attrib; |
192 | attrib_p = &dev_attrib[block*nr_instances*nr_attrib]; |
193 | blk->block_attributes = attrib_p; |
194 | |
195 | edac_dbg(4, "THIS BLOCK_ATTRIB=%p\n", |
196 | blk->block_attributes); |
197 | |
198 | /* Initialize every user specified attribute in this |
199 | * block with the data the caller passed in |
200 | * Each block gets its own copy of pointers, |
201 | * and its unique 'value' |
202 | */ |
203 | for (attr = 0; attr < nr_attrib; attr++) { |
204 | attrib = &attrib_p[attr]; |
205 | |
206 | /* populate the unique per attrib |
207 | * with the code pointers and info |
208 | */ |
209 | attrib->attr = attrib_spec[attr].attr; |
210 | attrib->show = attrib_spec[attr].show; |
211 | attrib->store = attrib_spec[attr].store; |
212 | |
213 | attrib->block = blk; /* up link */ |
214 | |
215 | edac_dbg(4, "alloc-attrib=%p attrib_name='%s' attrib-spec=%p spec-name=%s\n", |
216 | attrib, attrib->attr.name, |
217 | &attrib_spec[attr], |
218 | attrib_spec[attr].attr.name |
219 | ); |
220 | } |
221 | } |
222 | } |
223 | |
224 | /* Mark this instance as merely ALLOCATED */ |
225 | dev_ctl->op_state = OP_ALLOC; |
226 | |
227 | /* |
228 | * Initialize the 'root' kobj for the edac_device controller |
229 | */ |
230 | err = edac_device_register_sysfs_main_kobj(dev_ctl); |
231 | if (err) { |
232 | kfree(dev_ctl); |
233 | return NULL; |
234 | } |
235 | |
236 | /* at this point, the root kobj is valid, and in order to |
237 | * 'free' the object, then the function: |
238 | * edac_device_unregister_sysfs_main_kobj() must be called |
239 | * which will perform kobj unregistration and the actual free |
240 | * will occur during the kobject callback operation |
241 | */ |
242 | |
243 | return dev_ctl; |
244 | } |
245 | EXPORT_SYMBOL_GPL(edac_device_alloc_ctl_info); |
246 | |
247 | /* |
248 | * edac_device_free_ctl_info() |
249 | * frees the memory allocated by the edac_device_alloc_ctl_info() |
250 | * function |
251 | */ |
252 | void edac_device_free_ctl_info(struct edac_device_ctl_info *ctl_info) |
253 | { |
254 | edac_device_unregister_sysfs_main_kobj(ctl_info); |
255 | } |
256 | EXPORT_SYMBOL_GPL(edac_device_free_ctl_info); |
257 | |
258 | /* |
259 | * find_edac_device_by_dev |
260 | * scans the edac_device list for a specific 'struct device *' |
261 | * |
262 | * lock to be held prior to call: device_ctls_mutex |
263 | * |
264 | * Return: |
265 | * pointer to control structure managing 'dev' |
266 | * NULL if not found on list |
267 | */ |
268 | static struct edac_device_ctl_info *find_edac_device_by_dev(struct device *dev) |
269 | { |
270 | struct edac_device_ctl_info *edac_dev; |
271 | struct list_head *item; |
272 | |
273 | edac_dbg(0, "\n"); |
274 | |
275 | list_for_each(item, &edac_device_list) { |
276 | edac_dev = list_entry(item, struct edac_device_ctl_info, link); |
277 | |
278 | if (edac_dev->dev == dev) |
279 | return edac_dev; |
280 | } |
281 | |
282 | return NULL; |
283 | } |
284 | |
285 | /* |
286 | * add_edac_dev_to_global_list |
287 | * Before calling this function, caller must |
288 | * assign a unique value to edac_dev->dev_idx. |
289 | * |
290 | * lock to be held prior to call: device_ctls_mutex |
291 | * |
292 | * Return: |
293 | * 0 on success |
294 | * 1 on failure. |
295 | */ |
296 | static int add_edac_dev_to_global_list(struct edac_device_ctl_info *edac_dev) |
297 | { |
298 | struct list_head *item, *insert_before; |
299 | struct edac_device_ctl_info *rover; |
300 | |
301 | insert_before = &edac_device_list; |
302 | |
303 | /* Determine if already on the list */ |
304 | rover = find_edac_device_by_dev(edac_dev->dev); |
305 | if (unlikely(rover != NULL)) |
306 | goto fail0; |
307 | |
308 | /* Insert in ascending order by 'dev_idx', so find position */ |
309 | list_for_each(item, &edac_device_list) { |
310 | rover = list_entry(item, struct edac_device_ctl_info, link); |
311 | |
312 | if (rover->dev_idx >= edac_dev->dev_idx) { |
313 | if (unlikely(rover->dev_idx == edac_dev->dev_idx)) |
314 | goto fail1; |
315 | |
316 | insert_before = item; |
317 | break; |
318 | } |
319 | } |
320 | |
321 | list_add_tail_rcu(&edac_dev->link, insert_before); |
322 | return 0; |
323 | |
324 | fail0: |
325 | edac_printk(KERN_WARNING, EDAC_MC, |
326 | "%s (%s) %s %s already assigned %d\n", |
327 | dev_name(rover->dev), edac_dev_name(rover), |
328 | rover->mod_name, rover->ctl_name, rover->dev_idx); |
329 | return 1; |
330 | |
331 | fail1: |
332 | edac_printk(KERN_WARNING, EDAC_MC, |
333 | "bug in low-level driver: attempt to assign\n" |
334 | " duplicate dev_idx %d in %s()\n", rover->dev_idx, |
335 | __func__); |
336 | return 1; |
337 | } |
338 | |
339 | /* |
340 | * del_edac_device_from_global_list |
341 | */ |
342 | static void del_edac_device_from_global_list(struct edac_device_ctl_info |
343 | *edac_device) |
344 | { |
345 | list_del_rcu(&edac_device->link); |
346 | |
347 | /* these are for safe removal of devices from global list while |
348 | * NMI handlers may be traversing list |
349 | */ |
350 | synchronize_rcu(); |
351 | INIT_LIST_HEAD(&edac_device->link); |
352 | } |
353 | |
354 | /* |
355 | * edac_device_workq_function |
356 | * performs the operation scheduled by a workq request |
357 | * |
358 | * this workq is embedded within an edac_device_ctl_info |
359 | * structure, that needs to be polled for possible error events. |
360 | * |
361 | * This operation is to acquire the list mutex lock |
362 | * (thus preventing insertation or deletion) |
363 | * and then call the device's poll function IFF this device is |
364 | * running polled and there is a poll function defined. |
365 | */ |
366 | static void edac_device_workq_function(struct work_struct *work_req) |
367 | { |
368 | struct delayed_work *d_work = to_delayed_work(work_req); |
369 | struct edac_device_ctl_info *edac_dev = to_edac_device_ctl_work(d_work); |
370 | |
371 | mutex_lock(&device_ctls_mutex); |
372 | |
373 | /* If we are being removed, bail out immediately */ |
374 | if (edac_dev->op_state == OP_OFFLINE) { |
375 | mutex_unlock(&device_ctls_mutex); |
376 | return; |
377 | } |
378 | |
379 | /* Only poll controllers that are running polled and have a check */ |
380 | if ((edac_dev->op_state == OP_RUNNING_POLL) && |
381 | (edac_dev->edac_check != NULL)) { |
382 | edac_dev->edac_check(edac_dev); |
383 | } |
384 | |
385 | mutex_unlock(&device_ctls_mutex); |
386 | |
387 | /* Reschedule the workq for the next time period to start again |
388 | * if the number of msec is for 1 sec, then adjust to the next |
389 | * whole one second to save timers firing all over the period |
390 | * between integral seconds |
391 | */ |
392 | if (edac_dev->poll_msec == 1000) |
393 | queue_delayed_work(edac_workqueue, &edac_dev->work, |
394 | round_jiffies_relative(edac_dev->delay)); |
395 | else |
396 | queue_delayed_work(edac_workqueue, &edac_dev->work, |
397 | edac_dev->delay); |
398 | } |
399 | |
400 | /* |
401 | * edac_device_workq_setup |
402 | * initialize a workq item for this edac_device instance |
403 | * passing in the new delay period in msec |
404 | */ |
405 | void edac_device_workq_setup(struct edac_device_ctl_info *edac_dev, |
406 | unsigned msec) |
407 | { |
408 | edac_dbg(0, "\n"); |
409 | |
410 | /* take the arg 'msec' and set it into the control structure |
411 | * to used in the time period calculation |
412 | * then calc the number of jiffies that represents |
413 | */ |
414 | edac_dev->poll_msec = msec; |
415 | edac_dev->delay = msecs_to_jiffies(msec); |
416 | |
417 | INIT_DELAYED_WORK(&edac_dev->work, edac_device_workq_function); |
418 | |
419 | /* optimize here for the 1 second case, which will be normal value, to |
420 | * fire ON the 1 second time event. This helps reduce all sorts of |
421 | * timers firing on sub-second basis, while they are happy |
422 | * to fire together on the 1 second exactly |
423 | */ |
424 | if (edac_dev->poll_msec == 1000) |
425 | queue_delayed_work(edac_workqueue, &edac_dev->work, |
426 | round_jiffies_relative(edac_dev->delay)); |
427 | else |
428 | queue_delayed_work(edac_workqueue, &edac_dev->work, |
429 | edac_dev->delay); |
430 | } |
431 | |
432 | /* |
433 | * edac_device_workq_teardown |
434 | * stop the workq processing on this edac_dev |
435 | */ |
436 | void edac_device_workq_teardown(struct edac_device_ctl_info *edac_dev) |
437 | { |
438 | int status; |
439 | |
440 | status = cancel_delayed_work(&edac_dev->work); |
441 | if (status == 0) { |
442 | /* workq instance might be running, wait for it */ |
443 | flush_workqueue(edac_workqueue); |
444 | } |
445 | } |
446 | |
447 | /* |
448 | * edac_device_reset_delay_period |
449 | * |
450 | * need to stop any outstanding workq queued up at this time |
451 | * because we will be resetting the sleep time. |
452 | * Then restart the workq on the new delay |
453 | */ |
454 | void edac_device_reset_delay_period(struct edac_device_ctl_info *edac_dev, |
455 | unsigned long value) |
456 | { |
457 | /* cancel the current workq request, without the mutex lock */ |
458 | edac_device_workq_teardown(edac_dev); |
459 | |
460 | /* acquire the mutex before doing the workq setup */ |
461 | mutex_lock(&device_ctls_mutex); |
462 | |
463 | /* restart the workq request, with new delay value */ |
464 | edac_device_workq_setup(edac_dev, value); |
465 | |
466 | mutex_unlock(&device_ctls_mutex); |
467 | } |
468 | |
469 | /* |
470 | * edac_device_alloc_index: Allocate a unique device index number |
471 | * |
472 | * Return: |
473 | * allocated index number |
474 | */ |
475 | int edac_device_alloc_index(void) |
476 | { |
477 | static atomic_t device_indexes = ATOMIC_INIT(0); |
478 | |
479 | return atomic_inc_return(&device_indexes) - 1; |
480 | } |
481 | EXPORT_SYMBOL_GPL(edac_device_alloc_index); |
482 | |
483 | /** |
484 | * edac_device_add_device: Insert the 'edac_dev' structure into the |
485 | * edac_device global list and create sysfs entries associated with |
486 | * edac_device structure. |
487 | * @edac_device: pointer to the edac_device structure to be added to the list |
488 | * 'edac_device' structure. |
489 | * |
490 | * Return: |
491 | * 0 Success |
492 | * !0 Failure |
493 | */ |
494 | int edac_device_add_device(struct edac_device_ctl_info *edac_dev) |
495 | { |
496 | edac_dbg(0, "\n"); |
497 | |
498 | #ifdef CONFIG_EDAC_DEBUG |
499 | if (edac_debug_level >= 3) |
500 | edac_device_dump_device(edac_dev); |
501 | #endif |
502 | mutex_lock(&device_ctls_mutex); |
503 | |
504 | if (add_edac_dev_to_global_list(edac_dev)) |
505 | goto fail0; |
506 | |
507 | /* set load time so that error rate can be tracked */ |
508 | edac_dev->start_time = jiffies; |
509 | |
510 | /* create this instance's sysfs entries */ |
511 | if (edac_device_create_sysfs(edac_dev)) { |
512 | edac_device_printk(edac_dev, KERN_WARNING, |
513 | "failed to create sysfs device\n"); |
514 | goto fail1; |
515 | } |
516 | |
517 | /* If there IS a check routine, then we are running POLLED */ |
518 | if (edac_dev->edac_check != NULL) { |
519 | /* This instance is NOW RUNNING */ |
520 | edac_dev->op_state = OP_RUNNING_POLL; |
521 | |
522 | /* |
523 | * enable workq processing on this instance, |
524 | * default = 1000 msec |
525 | */ |
526 | edac_device_workq_setup(edac_dev, 1000); |
527 | } else { |
528 | edac_dev->op_state = OP_RUNNING_INTERRUPT; |
529 | } |
530 | |
531 | /* Report action taken */ |
532 | edac_device_printk(edac_dev, KERN_INFO, |
533 | "Giving out device to module '%s' controller " |
534 | "'%s': DEV '%s' (%s)\n", |
535 | edac_dev->mod_name, |
536 | edac_dev->ctl_name, |
537 | edac_dev_name(edac_dev), |
538 | edac_op_state_to_string(edac_dev->op_state)); |
539 | |
540 | mutex_unlock(&device_ctls_mutex); |
541 | return 0; |
542 | |
543 | fail1: |
544 | /* Some error, so remove the entry from the lsit */ |
545 | del_edac_device_from_global_list(edac_dev); |
546 | |
547 | fail0: |
548 | mutex_unlock(&device_ctls_mutex); |
549 | return 1; |
550 | } |
551 | EXPORT_SYMBOL_GPL(edac_device_add_device); |
552 | |
553 | /** |
554 | * edac_device_del_device: |
555 | * Remove sysfs entries for specified edac_device structure and |
556 | * then remove edac_device structure from global list |
557 | * |
558 | * @dev: |
559 | * Pointer to 'struct device' representing edac_device |
560 | * structure to remove. |
561 | * |
562 | * Return: |
563 | * Pointer to removed edac_device structure, |
564 | * OR NULL if device not found. |
565 | */ |
566 | struct edac_device_ctl_info *edac_device_del_device(struct device *dev) |
567 | { |
568 | struct edac_device_ctl_info *edac_dev; |
569 | |
570 | edac_dbg(0, "\n"); |
571 | |
572 | mutex_lock(&device_ctls_mutex); |
573 | |
574 | /* Find the structure on the list, if not there, then leave */ |
575 | edac_dev = find_edac_device_by_dev(dev); |
576 | if (edac_dev == NULL) { |
577 | mutex_unlock(&device_ctls_mutex); |
578 | return NULL; |
579 | } |
580 | |
581 | /* mark this instance as OFFLINE */ |
582 | edac_dev->op_state = OP_OFFLINE; |
583 | |
584 | /* deregister from global list */ |
585 | del_edac_device_from_global_list(edac_dev); |
586 | |
587 | mutex_unlock(&device_ctls_mutex); |
588 | |
589 | /* clear workq processing on this instance */ |
590 | edac_device_workq_teardown(edac_dev); |
591 | |
592 | /* Tear down the sysfs entries for this instance */ |
593 | edac_device_remove_sysfs(edac_dev); |
594 | |
595 | edac_printk(KERN_INFO, EDAC_MC, |
596 | "Removed device %d for %s %s: DEV %s\n", |
597 | edac_dev->dev_idx, |
598 | edac_dev->mod_name, edac_dev->ctl_name, edac_dev_name(edac_dev)); |
599 | |
600 | return edac_dev; |
601 | } |
602 | EXPORT_SYMBOL_GPL(edac_device_del_device); |
603 | |
604 | static inline int edac_device_get_log_ce(struct edac_device_ctl_info *edac_dev) |
605 | { |
606 | return edac_dev->log_ce; |
607 | } |
608 | |
609 | static inline int edac_device_get_log_ue(struct edac_device_ctl_info *edac_dev) |
610 | { |
611 | return edac_dev->log_ue; |
612 | } |
613 | |
614 | static inline int edac_device_get_panic_on_ue(struct edac_device_ctl_info |
615 | *edac_dev) |
616 | { |
617 | return edac_dev->panic_on_ue; |
618 | } |
619 | |
620 | /* |
621 | * edac_device_handle_ce |
622 | * perform a common output and handling of an 'edac_dev' CE event |
623 | */ |
624 | void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev, |
625 | int inst_nr, int block_nr, const char *msg) |
626 | { |
627 | struct edac_device_instance *instance; |
628 | struct edac_device_block *block = NULL; |
629 | |
630 | if ((inst_nr >= edac_dev->nr_instances) || (inst_nr < 0)) { |
631 | edac_device_printk(edac_dev, KERN_ERR, |
632 | "INTERNAL ERROR: 'instance' out of range " |
633 | "(%d >= %d)\n", inst_nr, |
634 | edac_dev->nr_instances); |
635 | return; |
636 | } |
637 | |
638 | instance = edac_dev->instances + inst_nr; |
639 | |
640 | if ((block_nr >= instance->nr_blocks) || (block_nr < 0)) { |
641 | edac_device_printk(edac_dev, KERN_ERR, |
642 | "INTERNAL ERROR: instance %d 'block' " |
643 | "out of range (%d >= %d)\n", |
644 | inst_nr, block_nr, |
645 | instance->nr_blocks); |
646 | return; |
647 | } |
648 | |
649 | if (instance->nr_blocks > 0) { |
650 | block = instance->blocks + block_nr; |
651 | block->counters.ce_count++; |
652 | } |
653 | |
654 | /* Propagate the count up the 'totals' tree */ |
655 | instance->counters.ce_count++; |
656 | edac_dev->counters.ce_count++; |
657 | |
658 | if (edac_device_get_log_ce(edac_dev)) |
659 | edac_device_printk(edac_dev, KERN_WARNING, |
660 | "CE: %s instance: %s block: %s '%s'\n", |
661 | edac_dev->ctl_name, instance->name, |
662 | block ? block->name : "N/A", msg); |
663 | } |
664 | EXPORT_SYMBOL_GPL(edac_device_handle_ce); |
665 | |
666 | /* |
667 | * edac_device_handle_ue |
668 | * perform a common output and handling of an 'edac_dev' UE event |
669 | */ |
670 | void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev, |
671 | int inst_nr, int block_nr, const char *msg) |
672 | { |
673 | struct edac_device_instance *instance; |
674 | struct edac_device_block *block = NULL; |
675 | |
676 | if ((inst_nr >= edac_dev->nr_instances) || (inst_nr < 0)) { |
677 | edac_device_printk(edac_dev, KERN_ERR, |
678 | "INTERNAL ERROR: 'instance' out of range " |
679 | "(%d >= %d)\n", inst_nr, |
680 | edac_dev->nr_instances); |
681 | return; |
682 | } |
683 | |
684 | instance = edac_dev->instances + inst_nr; |
685 | |
686 | if ((block_nr >= instance->nr_blocks) || (block_nr < 0)) { |
687 | edac_device_printk(edac_dev, KERN_ERR, |
688 | "INTERNAL ERROR: instance %d 'block' " |
689 | "out of range (%d >= %d)\n", |
690 | inst_nr, block_nr, |
691 | instance->nr_blocks); |
692 | return; |
693 | } |
694 | |
695 | if (instance->nr_blocks > 0) { |
696 | block = instance->blocks + block_nr; |
697 | block->counters.ue_count++; |
698 | } |
699 | |
700 | /* Propagate the count up the 'totals' tree */ |
701 | instance->counters.ue_count++; |
702 | edac_dev->counters.ue_count++; |
703 | |
704 | if (edac_device_get_log_ue(edac_dev)) |
705 | edac_device_printk(edac_dev, KERN_EMERG, |
706 | "UE: %s instance: %s block: %s '%s'\n", |
707 | edac_dev->ctl_name, instance->name, |
708 | block ? block->name : "N/A", msg); |
709 | |
710 | if (edac_device_get_panic_on_ue(edac_dev)) |
711 | panic("EDAC %s: UE instance: %s block %s '%s'\n", |
712 | edac_dev->ctl_name, instance->name, |
713 | block ? block->name : "N/A", msg); |
714 | } |
715 | EXPORT_SYMBOL_GPL(edac_device_handle_ue); |
716 |
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