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e27e3dac DT |
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/spinlock.h> | |
24 | #include <linux/list.h> | |
25 | #include <linux/sysdev.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 to memory controller's control array */ | |
35 | static DECLARE_MUTEX(device_ctls_mutex); | |
36 | static struct list_head edac_device_list = LIST_HEAD_INIT(edac_device_list); | |
37 | ||
38 | ||
39 | static inline void lock_device_list(void) | |
40 | { | |
41 | down(&device_ctls_mutex); | |
42 | } | |
43 | ||
44 | static inline void unlock_device_list(void) | |
45 | { | |
46 | up(&device_ctls_mutex); | |
47 | } | |
48 | ||
49 | ||
50 | #ifdef CONFIG_EDAC_DEBUG | |
51 | static void edac_device_dump_device(struct edac_device_ctl_info *edac_dev) | |
52 | { | |
53 | debugf3("\tedac_dev = %p dev_idx=%d \n", edac_dev,edac_dev->dev_idx); | |
54 | debugf4("\tedac_dev->edac_check = %p\n", edac_dev->edac_check); | |
55 | debugf3("\tdev = %p\n", edac_dev->dev); | |
56 | debugf3("\tmod_name:ctl_name = %s:%s\n", | |
57 | edac_dev->mod_name, edac_dev->ctl_name); | |
58 | debugf3("\tpvt_info = %p\n\n", edac_dev->pvt_info); | |
59 | } | |
60 | #endif /* CONFIG_EDAC_DEBUG */ | |
61 | ||
62 | /* | |
63 | * The alloc() and free() functions for the 'edac_device' control info | |
64 | * structure. A MC driver will allocate one of these for each edac_device | |
65 | * it is going to control/register with the EDAC CORE. | |
66 | */ | |
67 | struct edac_device_ctl_info *edac_device_alloc_ctl_info( | |
68 | unsigned sz_private, | |
69 | char *edac_device_name, | |
70 | unsigned nr_instances, | |
71 | char *edac_block_name, | |
72 | unsigned nr_blocks, | |
73 | unsigned offset_value, | |
74 | struct edac_attrib_spec *attrib_spec, | |
75 | unsigned nr_attribs) | |
76 | { | |
77 | struct edac_device_ctl_info *dev_ctl; | |
78 | struct edac_device_instance *dev_inst, *inst; | |
79 | struct edac_device_block *dev_blk, *blk_p, *blk; | |
80 | struct edac_attrib *dev_attrib, *attrib_p, *attrib; | |
81 | unsigned total_size; | |
82 | unsigned count; | |
83 | unsigned instance, block, attr; | |
84 | void *pvt; | |
85 | ||
86 | debugf1("%s() instances=%d blocks=%d\n", | |
87 | __func__,nr_instances,nr_blocks); | |
88 | ||
89 | /* Figure out the offsets of the various items from the start of an | |
90 | * ctl_info structure. We want the alignment of each item | |
91 | * to be at least as stringent as what the compiler would | |
92 | * provide if we could simply hardcode everything into a single struct. | |
93 | */ | |
94 | dev_ctl = (struct edac_device_ctl_info *) 0; | |
95 | ||
96 | /* Calc the 'end' offset past the ctl_info structure */ | |
97 | dev_inst = (struct edac_device_instance *) | |
98 | edac_align_ptr(&dev_ctl[1],sizeof(*dev_inst)); | |
99 | ||
100 | /* Calc the 'end' offset past the instance array */ | |
101 | dev_blk = (struct edac_device_block *) | |
102 | edac_align_ptr(&dev_inst[nr_instances],sizeof(*dev_blk)); | |
103 | ||
104 | /* Calc the 'end' offset past the dev_blk array */ | |
105 | count = nr_instances * nr_blocks; | |
106 | dev_attrib = (struct edac_attrib *) | |
107 | edac_align_ptr(&dev_blk[count],sizeof(*dev_attrib)); | |
108 | ||
109 | /* Check for case of NO attributes specified */ | |
110 | if (nr_attribs > 0) | |
111 | count *= nr_attribs; | |
112 | ||
113 | /* Calc the 'end' offset past the attributes array */ | |
114 | pvt = edac_align_ptr(&dev_attrib[count],sz_private); | |
115 | total_size = ((unsigned long) pvt) + sz_private; | |
116 | ||
117 | /* Allocate the amount of memory for the set of control structures */ | |
118 | if ((dev_ctl = kmalloc(total_size, GFP_KERNEL)) == NULL) | |
119 | return NULL; | |
120 | ||
121 | /* Adjust pointers so they point within the memory we just allocated | |
122 | * rather than an imaginary chunk of memory located at address 0. | |
123 | */ | |
124 | dev_inst = (struct edac_device_instance *) | |
125 | (((char *) dev_ctl) + ((unsigned long) dev_inst)); | |
126 | dev_blk = (struct edac_device_block *) | |
127 | (((char *) dev_ctl) + ((unsigned long) dev_blk)); | |
128 | dev_attrib = (struct edac_attrib *) | |
129 | (((char *) dev_ctl) + ((unsigned long) dev_attrib)); | |
130 | pvt = sz_private ? | |
131 | (((char *) dev_ctl) + ((unsigned long) pvt)) : NULL; | |
132 | ||
133 | memset(dev_ctl, 0, total_size); /* clear all fields */ | |
134 | dev_ctl->nr_instances = nr_instances; | |
135 | dev_ctl->instances = dev_inst; | |
136 | dev_ctl->pvt_info = pvt; | |
137 | ||
138 | /* Name of this edac device, ensure null terminated */ | |
139 | snprintf(dev_ctl->name,sizeof(dev_ctl->name),"%s", edac_device_name); | |
140 | dev_ctl->name[sizeof(dev_ctl->name)-1] = '\0'; | |
141 | ||
142 | /* Initialize every Instance */ | |
143 | for (instance = 0; instance < nr_instances; instance++) { | |
144 | inst = &dev_inst[instance]; | |
145 | inst->ctl = dev_ctl; | |
146 | inst->nr_blocks = nr_blocks; | |
147 | blk_p = &dev_blk[instance * nr_blocks]; | |
148 | inst->blocks = blk_p; | |
149 | ||
150 | /* name of this instance */ | |
151 | snprintf(inst->name, sizeof(inst->name), | |
152 | "%s%u", edac_device_name, instance); | |
153 | inst->name[sizeof(inst->name)-1] = '\0'; | |
154 | ||
155 | /* Initialize every block in each instance */ | |
156 | for ( block = 0; | |
157 | block < nr_blocks; | |
158 | block++) { | |
159 | blk = &blk_p[block]; | |
160 | blk->instance = inst; | |
161 | blk->nr_attribs = nr_attribs; | |
162 | attrib_p = &dev_attrib[block * nr_attribs]; | |
163 | blk->attribs = attrib_p; | |
164 | snprintf(blk->name, sizeof(blk->name), | |
165 | "%s%d", edac_block_name,block+1); | |
166 | blk->name[sizeof(blk->name)-1] = '\0'; | |
167 | ||
168 | debugf1("%s() instance=%d block=%d name=%s\n", | |
169 | __func__, instance,block,blk->name); | |
170 | ||
171 | if (attrib_spec != NULL) { | |
172 | /* when there is an attrib_spec passed int then | |
173 | * Initialize every attrib of each block | |
174 | */ | |
175 | for (attr = 0; attr < nr_attribs; attr++) { | |
176 | attrib = &attrib_p[attr]; | |
177 | attrib->block = blk; | |
178 | ||
179 | /* Link each attribute to the caller's | |
180 | * spec entry, for name and type | |
181 | */ | |
182 | attrib->spec = &attrib_spec[attr]; | |
183 | } | |
184 | } | |
185 | } | |
186 | } | |
187 | ||
188 | /* Mark this instance as merely ALLOCATED */ | |
189 | dev_ctl->op_state = OP_ALLOC; | |
190 | ||
191 | return dev_ctl; | |
192 | } | |
193 | EXPORT_SYMBOL_GPL(edac_device_alloc_ctl_info); | |
194 | ||
195 | /* | |
196 | * edac_device_free_ctl_info() | |
197 | * frees the memory allocated by the edac_device_alloc_ctl_info() | |
198 | * function | |
199 | */ | |
200 | void edac_device_free_ctl_info( struct edac_device_ctl_info *ctl_info) { | |
201 | kfree(ctl_info); | |
202 | } | |
203 | EXPORT_SYMBOL_GPL(edac_device_free_ctl_info); | |
204 | ||
205 | ||
206 | ||
207 | /* | |
208 | * find_edac_device_by_dev | |
209 | * scans the edac_device list for a specific 'struct device *' | |
210 | */ | |
211 | static struct edac_device_ctl_info * | |
212 | find_edac_device_by_dev(struct device *dev) | |
213 | { | |
214 | struct edac_device_ctl_info *edac_dev; | |
215 | struct list_head *item; | |
216 | ||
217 | debugf3("%s()\n", __func__); | |
218 | ||
219 | list_for_each(item, &edac_device_list) { | |
220 | edac_dev = list_entry(item, struct edac_device_ctl_info, link); | |
221 | ||
222 | if (edac_dev->dev == dev) | |
223 | return edac_dev; | |
224 | } | |
225 | ||
226 | return NULL; | |
227 | } | |
228 | ||
229 | /* | |
230 | * add_edac_dev_to_global_list | |
231 | * Before calling this function, caller must | |
232 | * assign a unique value to edac_dev->dev_idx. | |
233 | * Return: | |
234 | * 0 on success | |
235 | * 1 on failure. | |
236 | */ | |
237 | static int add_edac_dev_to_global_list (struct edac_device_ctl_info *edac_dev) | |
238 | { | |
239 | struct list_head *item, *insert_before; | |
240 | struct edac_device_ctl_info *rover; | |
241 | ||
242 | insert_before = &edac_device_list; | |
243 | ||
244 | /* Determine if already on the list */ | |
245 | if (unlikely((rover = find_edac_device_by_dev(edac_dev->dev)) != NULL)) | |
246 | goto fail0; | |
247 | ||
248 | /* Insert in ascending order by 'dev_idx', so find position */ | |
249 | list_for_each(item, &edac_device_list) { | |
250 | rover = list_entry(item, struct edac_device_ctl_info, link); | |
251 | ||
252 | if (rover->dev_idx >= edac_dev->dev_idx) { | |
253 | if (unlikely(rover->dev_idx == edac_dev->dev_idx)) | |
254 | goto fail1; | |
255 | ||
256 | insert_before = item; | |
257 | break; | |
258 | } | |
259 | } | |
260 | ||
261 | list_add_tail_rcu(&edac_dev->link, insert_before); | |
262 | return 0; | |
263 | ||
264 | fail0: | |
265 | edac_printk(KERN_WARNING, EDAC_MC, | |
266 | "%s (%s) %s %s already assigned %d\n", | |
c4192705 | 267 | rover->dev->bus_id, dev_name(rover), |
e27e3dac DT |
268 | rover->mod_name, rover->ctl_name, rover->dev_idx); |
269 | return 1; | |
270 | ||
271 | fail1: | |
272 | edac_printk(KERN_WARNING, EDAC_MC, | |
273 | "bug in low-level driver: attempt to assign\n" | |
274 | " duplicate dev_idx %d in %s()\n", rover->dev_idx, __func__); | |
275 | return 1; | |
276 | } | |
277 | ||
278 | /* | |
279 | * complete_edac_device_list_del | |
280 | */ | |
281 | static void complete_edac_device_list_del(struct rcu_head *head) | |
282 | { | |
283 | struct edac_device_ctl_info *edac_dev; | |
284 | ||
285 | edac_dev = container_of(head, struct edac_device_ctl_info, rcu); | |
286 | INIT_LIST_HEAD(&edac_dev->link); | |
287 | complete(&edac_dev->complete); | |
288 | } | |
289 | ||
290 | /* | |
291 | * del_edac_device_from_global_list | |
292 | */ | |
293 | static void del_edac_device_from_global_list( | |
294 | struct edac_device_ctl_info *edac_device) | |
295 | { | |
296 | list_del_rcu(&edac_device->link); | |
297 | init_completion(&edac_device->complete); | |
298 | call_rcu(&edac_device->rcu, complete_edac_device_list_del); | |
299 | wait_for_completion(&edac_device->complete); | |
300 | } | |
301 | ||
302 | /** | |
303 | * edac_device_find | |
304 | * Search for a edac_device_ctl_info structure whose index is 'idx'. | |
305 | * | |
306 | * If found, return a pointer to the structure. | |
307 | * Else return NULL. | |
308 | * | |
309 | * Caller must hold device_ctls_mutex. | |
310 | */ | |
311 | struct edac_device_ctl_info * edac_device_find(int idx) | |
312 | { | |
313 | struct list_head *item; | |
314 | struct edac_device_ctl_info *edac_dev; | |
315 | ||
316 | /* Iterate over list, looking for exact match of ID */ | |
317 | list_for_each(item, &edac_device_list) { | |
318 | edac_dev = list_entry(item, struct edac_device_ctl_info, link); | |
319 | ||
320 | if (edac_dev->dev_idx >= idx) { | |
321 | if (edac_dev->dev_idx == idx) | |
322 | return edac_dev; | |
323 | ||
324 | /* not on list, so terminate early */ | |
325 | break; | |
326 | } | |
327 | } | |
328 | ||
329 | return NULL; | |
330 | } | |
331 | EXPORT_SYMBOL(edac_device_find); | |
332 | ||
333 | ||
334 | /* | |
81d87cb1 | 335 | * edac_device_workq_function |
e27e3dac DT |
336 | * performs the operation scheduled by a workq request |
337 | */ | |
338 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)) | |
81d87cb1 | 339 | static void edac_device_workq_function(struct work_struct *work_req) |
e27e3dac DT |
340 | { |
341 | struct delayed_work *d_work = (struct delayed_work*) work_req; | |
342 | struct edac_device_ctl_info *edac_dev = | |
343 | to_edac_device_ctl_work(d_work); | |
344 | #else | |
81d87cb1 | 345 | static void edac_device_workq_function(void *ptr) |
e27e3dac DT |
346 | { |
347 | struct edac_device_ctl_info *edac_dev = | |
348 | (struct edac_device_ctl_info *) ptr; | |
349 | #endif | |
350 | ||
351 | //debugf0("%s() here and running\n", __func__); | |
352 | lock_device_list(); | |
353 | ||
354 | /* Only poll controllers that are running polled and have a check */ | |
355 | if ((edac_dev->op_state == OP_RUNNING_POLL) && | |
356 | (edac_dev->edac_check != NULL)) { | |
357 | edac_dev->edac_check(edac_dev); | |
358 | } | |
359 | ||
360 | unlock_device_list(); | |
361 | ||
362 | /* Reschedule */ | |
363 | queue_delayed_work(edac_workqueue,&edac_dev->work, edac_dev->delay); | |
364 | } | |
365 | ||
366 | /* | |
81d87cb1 | 367 | * edac_device_workq_setup |
e27e3dac DT |
368 | * initialize a workq item for this edac_device instance |
369 | * passing in the new delay period in msec | |
370 | */ | |
81d87cb1 DJ |
371 | void edac_device_workq_setup(struct edac_device_ctl_info *edac_dev, |
372 | unsigned msec) | |
e27e3dac DT |
373 | { |
374 | debugf0("%s()\n", __func__); | |
375 | ||
376 | edac_dev->poll_msec = msec; | |
81d87cb1 | 377 | edac_calc_delay(edac_dev); /* Calc delay jiffies */ |
e27e3dac DT |
378 | |
379 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)) | |
81d87cb1 | 380 | INIT_DELAYED_WORK(&edac_dev->work, edac_device_workq_function); |
e27e3dac | 381 | #else |
81d87cb1 | 382 | INIT_WORK(&edac_dev->work, edac_device_workq_function, edac_dev); |
e27e3dac | 383 | #endif |
81d87cb1 | 384 | queue_delayed_work(edac_workqueue, &edac_dev->work, edac_dev->delay); |
e27e3dac DT |
385 | } |
386 | ||
387 | /* | |
81d87cb1 | 388 | * edac_device_workq_teardown |
e27e3dac DT |
389 | * stop the workq processing on this edac_dev |
390 | */ | |
81d87cb1 | 391 | void edac_device_workq_teardown(struct edac_device_ctl_info *edac_dev) |
e27e3dac DT |
392 | { |
393 | int status; | |
394 | ||
395 | status = cancel_delayed_work(&edac_dev->work); | |
396 | if (status == 0) { | |
397 | /* workq instance might be running, wait for it */ | |
398 | flush_workqueue(edac_workqueue); | |
399 | } | |
400 | } | |
401 | ||
402 | /* | |
403 | * edac_device_reset_delay_period | |
404 | */ | |
405 | ||
406 | void edac_device_reset_delay_period( | |
407 | struct edac_device_ctl_info *edac_dev, | |
408 | unsigned long value) | |
409 | { | |
410 | lock_device_list(); | |
411 | ||
412 | /* cancel the current workq request */ | |
81d87cb1 | 413 | edac_device_workq_teardown(edac_dev); |
e27e3dac DT |
414 | |
415 | /* restart the workq request, with new delay value */ | |
81d87cb1 | 416 | edac_device_workq_setup(edac_dev, value); |
e27e3dac DT |
417 | |
418 | unlock_device_list(); | |
419 | } | |
420 | ||
e27e3dac DT |
421 | /** |
422 | * edac_device_add_device: Insert the 'edac_dev' structure into the | |
423 | * edac_device global list and create sysfs entries associated with | |
424 | * edac_device structure. | |
425 | * @edac_device: pointer to the edac_device structure to be added to the list | |
426 | * @edac_idx: A unique numeric identifier to be assigned to the | |
427 | * 'edac_device' structure. | |
428 | * | |
429 | * Return: | |
430 | * 0 Success | |
431 | * !0 Failure | |
432 | */ | |
433 | int edac_device_add_device(struct edac_device_ctl_info *edac_dev, int edac_idx) | |
434 | { | |
435 | debugf0("%s()\n", __func__); | |
436 | ||
437 | edac_dev->dev_idx = edac_idx; | |
438 | #ifdef CONFIG_EDAC_DEBUG | |
439 | if (edac_debug_level >= 3) | |
440 | edac_device_dump_device(edac_dev); | |
441 | #endif | |
442 | lock_device_list(); | |
443 | ||
444 | if (add_edac_dev_to_global_list(edac_dev)) | |
445 | goto fail0; | |
446 | ||
447 | /* set load time so that error rate can be tracked */ | |
448 | edac_dev->start_time = jiffies; | |
449 | ||
450 | /* create this instance's sysfs entries */ | |
451 | if (edac_device_create_sysfs(edac_dev)) { | |
452 | edac_device_printk(edac_dev, KERN_WARNING, | |
453 | "failed to create sysfs device\n"); | |
454 | goto fail1; | |
455 | } | |
456 | ||
457 | /* If there IS a check routine, then we are running POLLED */ | |
458 | if (edac_dev->edac_check != NULL) { | |
459 | /* This instance is NOW RUNNING */ | |
460 | edac_dev->op_state = OP_RUNNING_POLL; | |
461 | ||
81d87cb1 DJ |
462 | /* |
463 | * enable workq processing on this instance, | |
464 | * default = 1000 msec | |
465 | */ | |
466 | edac_device_workq_setup(edac_dev, 1000); | |
e27e3dac DT |
467 | } else { |
468 | edac_dev->op_state = OP_RUNNING_INTERRUPT; | |
469 | } | |
470 | ||
471 | ||
472 | /* Report action taken */ | |
473 | edac_device_printk(edac_dev, KERN_INFO, | |
474 | "Giving out device to module '%s' controller '%s': DEV '%s' (%s)\n", | |
475 | edac_dev->mod_name, | |
476 | edac_dev->ctl_name, | |
c4192705 | 477 | dev_name(edac_dev), |
91b99041 | 478 | edac_op_state_toString(edac_dev->op_state) |
e27e3dac DT |
479 | ); |
480 | ||
481 | unlock_device_list(); | |
482 | return 0; | |
483 | ||
484 | fail1: | |
485 | /* Some error, so remove the entry from the lsit */ | |
486 | del_edac_device_from_global_list(edac_dev); | |
487 | ||
488 | fail0: | |
489 | unlock_device_list(); | |
490 | return 1; | |
491 | } | |
492 | EXPORT_SYMBOL_GPL(edac_device_add_device); | |
493 | ||
494 | /** | |
495 | * edac_device_del_device: | |
496 | * Remove sysfs entries for specified edac_device structure and | |
497 | * then remove edac_device structure from global list | |
498 | * | |
499 | * @pdev: | |
500 | * Pointer to 'struct device' representing edac_device | |
501 | * structure to remove. | |
502 | * | |
503 | * Return: | |
504 | * Pointer to removed edac_device structure, | |
505 | * OR NULL if device not found. | |
506 | */ | |
507 | struct edac_device_ctl_info * edac_device_del_device(struct device *dev) | |
508 | { | |
509 | struct edac_device_ctl_info *edac_dev; | |
510 | ||
511 | debugf0("MC: %s()\n", __func__); | |
512 | ||
513 | lock_device_list(); | |
514 | ||
515 | if ((edac_dev = find_edac_device_by_dev(dev)) == NULL) { | |
516 | unlock_device_list(); | |
517 | return NULL; | |
518 | } | |
519 | ||
520 | /* mark this instance as OFFLINE */ | |
521 | edac_dev->op_state = OP_OFFLINE; | |
522 | ||
523 | /* clear workq processing on this instance */ | |
81d87cb1 | 524 | edac_device_workq_teardown(edac_dev); |
e27e3dac DT |
525 | |
526 | /* Tear down the sysfs entries for this instance */ | |
527 | edac_device_remove_sysfs(edac_dev); | |
528 | ||
529 | /* deregister from global list */ | |
530 | del_edac_device_from_global_list(edac_dev); | |
531 | ||
532 | unlock_device_list(); | |
533 | ||
534 | edac_printk(KERN_INFO, EDAC_MC, | |
535 | "Removed device %d for %s %s: DEV %s\n", | |
536 | edac_dev->dev_idx, | |
537 | edac_dev->mod_name, | |
538 | edac_dev->ctl_name, | |
c4192705 | 539 | dev_name(edac_dev)); |
e27e3dac DT |
540 | |
541 | return edac_dev; | |
542 | } | |
543 | EXPORT_SYMBOL_GPL(edac_device_del_device); | |
544 | ||
545 | ||
546 | static inline int edac_device_get_log_ce(struct edac_device_ctl_info *edac_dev) | |
547 | { | |
548 | return edac_dev->log_ce; | |
549 | } | |
550 | ||
551 | static inline int edac_device_get_log_ue(struct edac_device_ctl_info *edac_dev) | |
552 | { | |
553 | return edac_dev->log_ue; | |
554 | } | |
555 | ||
556 | static inline int edac_device_get_panic_on_ue( | |
557 | struct edac_device_ctl_info *edac_dev) | |
558 | { | |
559 | return edac_dev->panic_on_ue; | |
560 | } | |
561 | ||
562 | /* | |
563 | * edac_device_handle_ce | |
564 | * perform a common output and handling of an 'edac_dev' CE event | |
565 | */ | |
566 | void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev, | |
567 | int inst_nr, int block_nr, const char *msg) | |
568 | { | |
569 | struct edac_device_instance *instance; | |
570 | struct edac_device_block *block = NULL; | |
571 | ||
572 | if ((inst_nr >= edac_dev->nr_instances) || (inst_nr < 0)) { | |
573 | edac_device_printk(edac_dev, KERN_ERR, | |
574 | "INTERNAL ERROR: 'instance' out of range " | |
575 | "(%d >= %d)\n", inst_nr, edac_dev->nr_instances); | |
576 | return; | |
577 | } | |
578 | ||
579 | instance = edac_dev->instances + inst_nr; | |
580 | ||
581 | if ((block_nr >= instance->nr_blocks) || (block_nr < 0)) { | |
582 | edac_device_printk(edac_dev, KERN_ERR, | |
583 | "INTERNAL ERROR: instance %d 'block' out of range " | |
584 | "(%d >= %d)\n", inst_nr, block_nr, instance->nr_blocks); | |
585 | return; | |
586 | } | |
587 | ||
588 | if (instance->nr_blocks > 0) { | |
589 | block = instance->blocks + block_nr; | |
590 | block->counters.ce_count++; | |
591 | } | |
592 | ||
593 | /* Propogate the count up the 'totals' tree */ | |
594 | instance->counters.ce_count++; | |
595 | edac_dev->counters.ce_count++; | |
596 | ||
597 | if (edac_device_get_log_ce(edac_dev)) | |
598 | edac_device_printk(edac_dev, KERN_WARNING, | |
599 | "CE ctl: %s, instance: %s, block: %s: %s\n", | |
600 | edac_dev->ctl_name, instance->name, | |
601 | block ? block->name : "N/A", msg); | |
602 | } | |
603 | EXPORT_SYMBOL_GPL(edac_device_handle_ce); | |
604 | ||
605 | /* | |
606 | * edac_device_handle_ue | |
607 | * perform a common output and handling of an 'edac_dev' UE event | |
608 | */ | |
609 | void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev, | |
610 | int inst_nr, int block_nr, const char *msg) | |
611 | { | |
612 | struct edac_device_instance *instance; | |
613 | struct edac_device_block *block = NULL; | |
614 | ||
615 | if ((inst_nr >= edac_dev->nr_instances) || (inst_nr < 0)) { | |
616 | edac_device_printk(edac_dev, KERN_ERR, | |
617 | "INTERNAL ERROR: 'instance' out of range " | |
618 | "(%d >= %d)\n", inst_nr, edac_dev->nr_instances); | |
619 | return; | |
620 | } | |
621 | ||
622 | instance = edac_dev->instances + inst_nr; | |
623 | ||
624 | if ((block_nr >= instance->nr_blocks) || (block_nr < 0)) { | |
625 | edac_device_printk(edac_dev, KERN_ERR, | |
626 | "INTERNAL ERROR: instance %d 'block' out of range " | |
627 | "(%d >= %d)\n", inst_nr, block_nr, instance->nr_blocks); | |
628 | return; | |
629 | } | |
630 | ||
631 | if (instance->nr_blocks > 0) { | |
632 | block = instance->blocks + block_nr; | |
633 | block->counters.ue_count++; | |
634 | } | |
635 | ||
636 | /* Propogate the count up the 'totals' tree */ | |
637 | instance->counters.ue_count++; | |
638 | edac_dev->counters.ue_count++; | |
639 | ||
640 | if (edac_device_get_log_ue(edac_dev)) | |
641 | edac_device_printk(edac_dev, KERN_EMERG, | |
642 | "UE ctl: %s, instance: %s, block: %s: %s\n", | |
643 | edac_dev->ctl_name, instance->name, | |
644 | block ? block->name : "N/A", msg); | |
645 | ||
646 | if (edac_device_get_panic_on_ue(edac_dev)) | |
647 | panic("EDAC %s: UE instance: %s, block %s: %s\n", | |
648 | edac_dev->ctl_name, instance->name, | |
649 | block ? block->name : "N/A", msg); | |
650 | } | |
651 | EXPORT_SYMBOL_GPL(edac_device_handle_ue); | |
652 |