Commit | Line | Data |
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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 | ||
e27e3dac DT |
38 | static inline void lock_device_list(void) |
39 | { | |
40 | down(&device_ctls_mutex); | |
41 | } | |
42 | ||
43 | static inline void unlock_device_list(void) | |
44 | { | |
45 | up(&device_ctls_mutex); | |
46 | } | |
47 | ||
e27e3dac DT |
48 | #ifdef CONFIG_EDAC_DEBUG |
49 | static void edac_device_dump_device(struct edac_device_ctl_info *edac_dev) | |
50 | { | |
079708b9 | 51 | debugf3("\tedac_dev = %p dev_idx=%d \n", edac_dev, edac_dev->dev_idx); |
e27e3dac DT |
52 | debugf4("\tedac_dev->edac_check = %p\n", edac_dev->edac_check); |
53 | debugf3("\tdev = %p\n", edac_dev->dev); | |
54 | debugf3("\tmod_name:ctl_name = %s:%s\n", | |
55 | edac_dev->mod_name, edac_dev->ctl_name); | |
56 | debugf3("\tpvt_info = %p\n\n", edac_dev->pvt_info); | |
57 | } | |
079708b9 | 58 | #endif /* CONFIG_EDAC_DEBUG */ |
e27e3dac DT |
59 | |
60 | /* | |
61 | * The alloc() and free() functions for the 'edac_device' control info | |
62 | * structure. A MC driver will allocate one of these for each edac_device | |
63 | * it is going to control/register with the EDAC CORE. | |
64 | */ | |
65 | struct edac_device_ctl_info *edac_device_alloc_ctl_info( | |
66 | unsigned sz_private, | |
67 | char *edac_device_name, | |
68 | unsigned nr_instances, | |
69 | char *edac_block_name, | |
70 | unsigned nr_blocks, | |
71 | unsigned offset_value, | |
079708b9 DT |
72 | struct edac_attrib_spec |
73 | *attrib_spec, | |
e27e3dac DT |
74 | unsigned nr_attribs) |
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_attrib *dev_attrib, *attrib_p, *attrib; | |
80 | unsigned total_size; | |
81 | unsigned count; | |
82 | unsigned instance, block, attr; | |
83 | void *pvt; | |
84 | ||
85 | debugf1("%s() instances=%d blocks=%d\n", | |
079708b9 | 86 | __func__, nr_instances, nr_blocks); |
e27e3dac DT |
87 | |
88 | /* Figure out the offsets of the various items from the start of an | |
89 | * ctl_info structure. We want the alignment of each item | |
90 | * to be at least as stringent as what the compiler would | |
91 | * provide if we could simply hardcode everything into a single struct. | |
92 | */ | |
079708b9 | 93 | dev_ctl = (struct edac_device_ctl_info *)0; |
e27e3dac DT |
94 | |
95 | /* Calc the 'end' offset past the ctl_info structure */ | |
96 | dev_inst = (struct edac_device_instance *) | |
079708b9 | 97 | edac_align_ptr(&dev_ctl[1], sizeof(*dev_inst)); |
e27e3dac DT |
98 | |
99 | /* Calc the 'end' offset past the instance array */ | |
100 | dev_blk = (struct edac_device_block *) | |
079708b9 | 101 | edac_align_ptr(&dev_inst[nr_instances], sizeof(*dev_blk)); |
e27e3dac DT |
102 | |
103 | /* Calc the 'end' offset past the dev_blk array */ | |
104 | count = nr_instances * nr_blocks; | |
105 | dev_attrib = (struct edac_attrib *) | |
079708b9 | 106 | edac_align_ptr(&dev_blk[count], sizeof(*dev_attrib)); |
e27e3dac DT |
107 | |
108 | /* Check for case of NO attributes specified */ | |
109 | if (nr_attribs > 0) | |
110 | count *= nr_attribs; | |
111 | ||
112 | /* Calc the 'end' offset past the attributes array */ | |
079708b9 DT |
113 | pvt = edac_align_ptr(&dev_attrib[count], sz_private); |
114 | total_size = ((unsigned long)pvt) + sz_private; | |
e27e3dac DT |
115 | |
116 | /* Allocate the amount of memory for the set of control structures */ | |
117 | if ((dev_ctl = kmalloc(total_size, GFP_KERNEL)) == NULL) | |
118 | return NULL; | |
119 | ||
120 | /* Adjust pointers so they point within the memory we just allocated | |
121 | * rather than an imaginary chunk of memory located at address 0. | |
122 | */ | |
123 | dev_inst = (struct edac_device_instance *) | |
079708b9 | 124 | (((char *)dev_ctl) + ((unsigned long)dev_inst)); |
e27e3dac | 125 | dev_blk = (struct edac_device_block *) |
079708b9 | 126 | (((char *)dev_ctl) + ((unsigned long)dev_blk)); |
e27e3dac | 127 | dev_attrib = (struct edac_attrib *) |
079708b9 DT |
128 | (((char *)dev_ctl) + ((unsigned long)dev_attrib)); |
129 | pvt = sz_private ? (((char *)dev_ctl) + ((unsigned long)pvt)) : NULL; | |
e27e3dac | 130 | |
079708b9 | 131 | memset(dev_ctl, 0, total_size); /* clear all fields */ |
e27e3dac DT |
132 | dev_ctl->nr_instances = nr_instances; |
133 | dev_ctl->instances = dev_inst; | |
134 | dev_ctl->pvt_info = pvt; | |
135 | ||
136 | /* Name of this edac device, ensure null terminated */ | |
079708b9 DT |
137 | snprintf(dev_ctl->name, sizeof(dev_ctl->name), "%s", edac_device_name); |
138 | dev_ctl->name[sizeof(dev_ctl->name) - 1] = '\0'; | |
e27e3dac DT |
139 | |
140 | /* Initialize every Instance */ | |
141 | for (instance = 0; instance < nr_instances; instance++) { | |
142 | inst = &dev_inst[instance]; | |
143 | inst->ctl = dev_ctl; | |
144 | inst->nr_blocks = nr_blocks; | |
145 | blk_p = &dev_blk[instance * nr_blocks]; | |
146 | inst->blocks = blk_p; | |
147 | ||
148 | /* name of this instance */ | |
149 | snprintf(inst->name, sizeof(inst->name), | |
079708b9 DT |
150 | "%s%u", edac_device_name, instance); |
151 | inst->name[sizeof(inst->name) - 1] = '\0'; | |
e27e3dac DT |
152 | |
153 | /* Initialize every block in each instance */ | |
079708b9 | 154 | for (block = 0; block < nr_blocks; block++) { |
e27e3dac DT |
155 | blk = &blk_p[block]; |
156 | blk->instance = inst; | |
157 | blk->nr_attribs = nr_attribs; | |
158 | attrib_p = &dev_attrib[block * nr_attribs]; | |
159 | blk->attribs = attrib_p; | |
160 | snprintf(blk->name, sizeof(blk->name), | |
079708b9 DT |
161 | "%s%d", edac_block_name, block + 1); |
162 | blk->name[sizeof(blk->name) - 1] = '\0'; | |
e27e3dac DT |
163 | |
164 | debugf1("%s() instance=%d block=%d name=%s\n", | |
079708b9 | 165 | __func__, instance, block, blk->name); |
e27e3dac DT |
166 | |
167 | if (attrib_spec != NULL) { | |
168 | /* when there is an attrib_spec passed int then | |
169 | * Initialize every attrib of each block | |
170 | */ | |
171 | for (attr = 0; attr < nr_attribs; attr++) { | |
172 | attrib = &attrib_p[attr]; | |
173 | attrib->block = blk; | |
174 | ||
175 | /* Link each attribute to the caller's | |
176 | * spec entry, for name and type | |
079708b9 | 177 | */ |
e27e3dac DT |
178 | attrib->spec = &attrib_spec[attr]; |
179 | } | |
180 | } | |
181 | } | |
182 | } | |
183 | ||
184 | /* Mark this instance as merely ALLOCATED */ | |
185 | dev_ctl->op_state = OP_ALLOC; | |
186 | ||
187 | return dev_ctl; | |
188 | } | |
079708b9 | 189 | |
e27e3dac DT |
190 | EXPORT_SYMBOL_GPL(edac_device_alloc_ctl_info); |
191 | ||
192 | /* | |
193 | * edac_device_free_ctl_info() | |
194 | * frees the memory allocated by the edac_device_alloc_ctl_info() | |
195 | * function | |
196 | */ | |
079708b9 DT |
197 | void edac_device_free_ctl_info(struct edac_device_ctl_info *ctl_info) |
198 | { | |
e27e3dac DT |
199 | kfree(ctl_info); |
200 | } | |
e27e3dac | 201 | |
079708b9 | 202 | EXPORT_SYMBOL_GPL(edac_device_free_ctl_info); |
e27e3dac DT |
203 | |
204 | /* | |
205 | * find_edac_device_by_dev | |
206 | * scans the edac_device list for a specific 'struct device *' | |
207 | */ | |
079708b9 | 208 | static struct edac_device_ctl_info *find_edac_device_by_dev(struct device *dev) |
e27e3dac DT |
209 | { |
210 | struct edac_device_ctl_info *edac_dev; | |
211 | struct list_head *item; | |
212 | ||
213 | debugf3("%s()\n", __func__); | |
214 | ||
215 | list_for_each(item, &edac_device_list) { | |
216 | edac_dev = list_entry(item, struct edac_device_ctl_info, link); | |
217 | ||
218 | if (edac_dev->dev == dev) | |
219 | return edac_dev; | |
220 | } | |
221 | ||
222 | return NULL; | |
223 | } | |
224 | ||
225 | /* | |
226 | * add_edac_dev_to_global_list | |
227 | * Before calling this function, caller must | |
228 | * assign a unique value to edac_dev->dev_idx. | |
229 | * Return: | |
230 | * 0 on success | |
231 | * 1 on failure. | |
232 | */ | |
079708b9 | 233 | static int add_edac_dev_to_global_list(struct edac_device_ctl_info *edac_dev) |
e27e3dac DT |
234 | { |
235 | struct list_head *item, *insert_before; | |
236 | struct edac_device_ctl_info *rover; | |
237 | ||
238 | insert_before = &edac_device_list; | |
239 | ||
240 | /* Determine if already on the list */ | |
241 | if (unlikely((rover = find_edac_device_by_dev(edac_dev->dev)) != NULL)) | |
242 | goto fail0; | |
243 | ||
244 | /* Insert in ascending order by 'dev_idx', so find position */ | |
245 | list_for_each(item, &edac_device_list) { | |
246 | rover = list_entry(item, struct edac_device_ctl_info, link); | |
247 | ||
248 | if (rover->dev_idx >= edac_dev->dev_idx) { | |
249 | if (unlikely(rover->dev_idx == edac_dev->dev_idx)) | |
250 | goto fail1; | |
251 | ||
252 | insert_before = item; | |
253 | break; | |
254 | } | |
255 | } | |
256 | ||
257 | list_add_tail_rcu(&edac_dev->link, insert_before); | |
258 | return 0; | |
259 | ||
079708b9 | 260 | fail0: |
e27e3dac | 261 | edac_printk(KERN_WARNING, EDAC_MC, |
079708b9 DT |
262 | "%s (%s) %s %s already assigned %d\n", |
263 | rover->dev->bus_id, dev_name(rover), | |
264 | rover->mod_name, rover->ctl_name, rover->dev_idx); | |
e27e3dac DT |
265 | return 1; |
266 | ||
079708b9 | 267 | fail1: |
e27e3dac | 268 | edac_printk(KERN_WARNING, EDAC_MC, |
079708b9 DT |
269 | "bug in low-level driver: attempt to assign\n" |
270 | " duplicate dev_idx %d in %s()\n", rover->dev_idx, | |
271 | __func__); | |
e27e3dac DT |
272 | return 1; |
273 | } | |
274 | ||
275 | /* | |
276 | * complete_edac_device_list_del | |
277 | */ | |
278 | static void complete_edac_device_list_del(struct rcu_head *head) | |
279 | { | |
280 | struct edac_device_ctl_info *edac_dev; | |
281 | ||
282 | edac_dev = container_of(head, struct edac_device_ctl_info, rcu); | |
283 | INIT_LIST_HEAD(&edac_dev->link); | |
284 | complete(&edac_dev->complete); | |
285 | } | |
286 | ||
287 | /* | |
288 | * del_edac_device_from_global_list | |
289 | */ | |
079708b9 DT |
290 | static void del_edac_device_from_global_list(struct edac_device_ctl_info |
291 | *edac_device) | |
e27e3dac DT |
292 | { |
293 | list_del_rcu(&edac_device->link); | |
294 | init_completion(&edac_device->complete); | |
295 | call_rcu(&edac_device->rcu, complete_edac_device_list_del); | |
296 | wait_for_completion(&edac_device->complete); | |
297 | } | |
298 | ||
299 | /** | |
300 | * edac_device_find | |
301 | * Search for a edac_device_ctl_info structure whose index is 'idx'. | |
302 | * | |
303 | * If found, return a pointer to the structure. | |
304 | * Else return NULL. | |
305 | * | |
306 | * Caller must hold device_ctls_mutex. | |
307 | */ | |
079708b9 | 308 | struct edac_device_ctl_info *edac_device_find(int idx) |
e27e3dac DT |
309 | { |
310 | struct list_head *item; | |
311 | struct edac_device_ctl_info *edac_dev; | |
312 | ||
313 | /* Iterate over list, looking for exact match of ID */ | |
314 | list_for_each(item, &edac_device_list) { | |
315 | edac_dev = list_entry(item, struct edac_device_ctl_info, link); | |
316 | ||
317 | if (edac_dev->dev_idx >= idx) { | |
318 | if (edac_dev->dev_idx == idx) | |
319 | return edac_dev; | |
320 | ||
321 | /* not on list, so terminate early */ | |
322 | break; | |
323 | } | |
324 | } | |
325 | ||
326 | return NULL; | |
327 | } | |
e27e3dac | 328 | |
079708b9 | 329 | EXPORT_SYMBOL(edac_device_find); |
e27e3dac DT |
330 | |
331 | /* | |
81d87cb1 | 332 | * edac_device_workq_function |
e27e3dac DT |
333 | * performs the operation scheduled by a workq request |
334 | */ | |
81d87cb1 | 335 | static void edac_device_workq_function(struct work_struct *work_req) |
e27e3dac | 336 | { |
079708b9 DT |
337 | struct delayed_work *d_work = (struct delayed_work *)work_req; |
338 | struct edac_device_ctl_info *edac_dev = to_edac_device_ctl_work(d_work); | |
e27e3dac DT |
339 | |
340 | //debugf0("%s() here and running\n", __func__); | |
341 | lock_device_list(); | |
342 | ||
343 | /* Only poll controllers that are running polled and have a check */ | |
344 | if ((edac_dev->op_state == OP_RUNNING_POLL) && | |
079708b9 | 345 | (edac_dev->edac_check != NULL)) { |
e27e3dac DT |
346 | edac_dev->edac_check(edac_dev); |
347 | } | |
348 | ||
349 | unlock_device_list(); | |
350 | ||
351 | /* Reschedule */ | |
079708b9 | 352 | queue_delayed_work(edac_workqueue, &edac_dev->work, edac_dev->delay); |
e27e3dac DT |
353 | } |
354 | ||
355 | /* | |
81d87cb1 | 356 | * edac_device_workq_setup |
e27e3dac DT |
357 | * initialize a workq item for this edac_device instance |
358 | * passing in the new delay period in msec | |
359 | */ | |
81d87cb1 | 360 | void edac_device_workq_setup(struct edac_device_ctl_info *edac_dev, |
079708b9 | 361 | unsigned msec) |
e27e3dac DT |
362 | { |
363 | debugf0("%s()\n", __func__); | |
364 | ||
365 | edac_dev->poll_msec = msec; | |
81d87cb1 | 366 | edac_calc_delay(edac_dev); /* Calc delay jiffies */ |
e27e3dac | 367 | |
81d87cb1 | 368 | INIT_DELAYED_WORK(&edac_dev->work, edac_device_workq_function); |
81d87cb1 | 369 | queue_delayed_work(edac_workqueue, &edac_dev->work, edac_dev->delay); |
e27e3dac DT |
370 | } |
371 | ||
372 | /* | |
81d87cb1 | 373 | * edac_device_workq_teardown |
e27e3dac DT |
374 | * stop the workq processing on this edac_dev |
375 | */ | |
81d87cb1 | 376 | void edac_device_workq_teardown(struct edac_device_ctl_info *edac_dev) |
e27e3dac DT |
377 | { |
378 | int status; | |
379 | ||
380 | status = cancel_delayed_work(&edac_dev->work); | |
381 | if (status == 0) { | |
382 | /* workq instance might be running, wait for it */ | |
383 | flush_workqueue(edac_workqueue); | |
384 | } | |
385 | } | |
386 | ||
387 | /* | |
388 | * edac_device_reset_delay_period | |
389 | */ | |
390 | ||
079708b9 DT |
391 | void edac_device_reset_delay_period(struct edac_device_ctl_info *edac_dev, |
392 | unsigned long value) | |
e27e3dac DT |
393 | { |
394 | lock_device_list(); | |
395 | ||
396 | /* cancel the current workq request */ | |
81d87cb1 | 397 | edac_device_workq_teardown(edac_dev); |
e27e3dac DT |
398 | |
399 | /* restart the workq request, with new delay value */ | |
81d87cb1 | 400 | edac_device_workq_setup(edac_dev, value); |
e27e3dac DT |
401 | |
402 | unlock_device_list(); | |
403 | } | |
404 | ||
e27e3dac DT |
405 | /** |
406 | * edac_device_add_device: Insert the 'edac_dev' structure into the | |
407 | * edac_device global list and create sysfs entries associated with | |
408 | * edac_device structure. | |
409 | * @edac_device: pointer to the edac_device structure to be added to the list | |
410 | * @edac_idx: A unique numeric identifier to be assigned to the | |
411 | * 'edac_device' structure. | |
412 | * | |
413 | * Return: | |
414 | * 0 Success | |
415 | * !0 Failure | |
416 | */ | |
417 | int edac_device_add_device(struct edac_device_ctl_info *edac_dev, int edac_idx) | |
418 | { | |
419 | debugf0("%s()\n", __func__); | |
420 | ||
421 | edac_dev->dev_idx = edac_idx; | |
422 | #ifdef CONFIG_EDAC_DEBUG | |
423 | if (edac_debug_level >= 3) | |
424 | edac_device_dump_device(edac_dev); | |
425 | #endif | |
426 | lock_device_list(); | |
427 | ||
428 | if (add_edac_dev_to_global_list(edac_dev)) | |
429 | goto fail0; | |
430 | ||
431 | /* set load time so that error rate can be tracked */ | |
432 | edac_dev->start_time = jiffies; | |
433 | ||
434 | /* create this instance's sysfs entries */ | |
435 | if (edac_device_create_sysfs(edac_dev)) { | |
436 | edac_device_printk(edac_dev, KERN_WARNING, | |
079708b9 | 437 | "failed to create sysfs device\n"); |
e27e3dac DT |
438 | goto fail1; |
439 | } | |
440 | ||
441 | /* If there IS a check routine, then we are running POLLED */ | |
442 | if (edac_dev->edac_check != NULL) { | |
443 | /* This instance is NOW RUNNING */ | |
444 | edac_dev->op_state = OP_RUNNING_POLL; | |
445 | ||
81d87cb1 DJ |
446 | /* |
447 | * enable workq processing on this instance, | |
448 | * default = 1000 msec | |
449 | */ | |
450 | edac_device_workq_setup(edac_dev, 1000); | |
e27e3dac DT |
451 | } else { |
452 | edac_dev->op_state = OP_RUNNING_INTERRUPT; | |
453 | } | |
454 | ||
e27e3dac DT |
455 | /* Report action taken */ |
456 | edac_device_printk(edac_dev, KERN_INFO, | |
079708b9 DT |
457 | "Giving out device to module '%s' controller '%s': DEV '%s' (%s)\n", |
458 | edac_dev->mod_name, | |
459 | edac_dev->ctl_name, | |
460 | dev_name(edac_dev), | |
461 | edac_op_state_toString(edac_dev->op_state) | |
462 | ); | |
e27e3dac DT |
463 | |
464 | unlock_device_list(); | |
465 | return 0; | |
466 | ||
079708b9 | 467 | fail1: |
e27e3dac DT |
468 | /* Some error, so remove the entry from the lsit */ |
469 | del_edac_device_from_global_list(edac_dev); | |
470 | ||
079708b9 | 471 | fail0: |
e27e3dac DT |
472 | unlock_device_list(); |
473 | return 1; | |
474 | } | |
079708b9 | 475 | |
e27e3dac DT |
476 | EXPORT_SYMBOL_GPL(edac_device_add_device); |
477 | ||
478 | /** | |
479 | * edac_device_del_device: | |
480 | * Remove sysfs entries for specified edac_device structure and | |
481 | * then remove edac_device structure from global list | |
482 | * | |
483 | * @pdev: | |
484 | * Pointer to 'struct device' representing edac_device | |
485 | * structure to remove. | |
486 | * | |
487 | * Return: | |
488 | * Pointer to removed edac_device structure, | |
489 | * OR NULL if device not found. | |
490 | */ | |
079708b9 | 491 | struct edac_device_ctl_info *edac_device_del_device(struct device *dev) |
e27e3dac DT |
492 | { |
493 | struct edac_device_ctl_info *edac_dev; | |
494 | ||
495 | debugf0("MC: %s()\n", __func__); | |
496 | ||
497 | lock_device_list(); | |
498 | ||
499 | if ((edac_dev = find_edac_device_by_dev(dev)) == NULL) { | |
500 | unlock_device_list(); | |
501 | return NULL; | |
502 | } | |
503 | ||
504 | /* mark this instance as OFFLINE */ | |
505 | edac_dev->op_state = OP_OFFLINE; | |
506 | ||
507 | /* clear workq processing on this instance */ | |
81d87cb1 | 508 | edac_device_workq_teardown(edac_dev); |
e27e3dac DT |
509 | |
510 | /* Tear down the sysfs entries for this instance */ | |
511 | edac_device_remove_sysfs(edac_dev); | |
512 | ||
513 | /* deregister from global list */ | |
514 | del_edac_device_from_global_list(edac_dev); | |
515 | ||
516 | unlock_device_list(); | |
517 | ||
518 | edac_printk(KERN_INFO, EDAC_MC, | |
079708b9 DT |
519 | "Removed device %d for %s %s: DEV %s\n", |
520 | edac_dev->dev_idx, | |
521 | edac_dev->mod_name, edac_dev->ctl_name, dev_name(edac_dev)); | |
e27e3dac DT |
522 | |
523 | return edac_dev; | |
524 | } | |
e27e3dac | 525 | |
079708b9 | 526 | EXPORT_SYMBOL_GPL(edac_device_del_device); |
e27e3dac DT |
527 | |
528 | static inline int edac_device_get_log_ce(struct edac_device_ctl_info *edac_dev) | |
529 | { | |
530 | return edac_dev->log_ce; | |
531 | } | |
532 | ||
533 | static inline int edac_device_get_log_ue(struct edac_device_ctl_info *edac_dev) | |
534 | { | |
535 | return edac_dev->log_ue; | |
536 | } | |
537 | ||
079708b9 DT |
538 | static inline int edac_device_get_panic_on_ue(struct edac_device_ctl_info |
539 | *edac_dev) | |
e27e3dac DT |
540 | { |
541 | return edac_dev->panic_on_ue; | |
542 | } | |
543 | ||
544 | /* | |
545 | * edac_device_handle_ce | |
546 | * perform a common output and handling of an 'edac_dev' CE event | |
547 | */ | |
548 | void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev, | |
079708b9 | 549 | int inst_nr, int block_nr, const char *msg) |
e27e3dac DT |
550 | { |
551 | struct edac_device_instance *instance; | |
552 | struct edac_device_block *block = NULL; | |
553 | ||
554 | if ((inst_nr >= edac_dev->nr_instances) || (inst_nr < 0)) { | |
555 | edac_device_printk(edac_dev, KERN_ERR, | |
079708b9 DT |
556 | "INTERNAL ERROR: 'instance' out of range " |
557 | "(%d >= %d)\n", inst_nr, | |
558 | edac_dev->nr_instances); | |
e27e3dac DT |
559 | return; |
560 | } | |
561 | ||
562 | instance = edac_dev->instances + inst_nr; | |
563 | ||
564 | if ((block_nr >= instance->nr_blocks) || (block_nr < 0)) { | |
565 | edac_device_printk(edac_dev, KERN_ERR, | |
079708b9 DT |
566 | "INTERNAL ERROR: instance %d 'block' out of range " |
567 | "(%d >= %d)\n", inst_nr, block_nr, | |
568 | instance->nr_blocks); | |
e27e3dac DT |
569 | return; |
570 | } | |
571 | ||
572 | if (instance->nr_blocks > 0) { | |
573 | block = instance->blocks + block_nr; | |
574 | block->counters.ce_count++; | |
575 | } | |
576 | ||
577 | /* Propogate the count up the 'totals' tree */ | |
578 | instance->counters.ce_count++; | |
579 | edac_dev->counters.ce_count++; | |
580 | ||
581 | if (edac_device_get_log_ce(edac_dev)) | |
582 | edac_device_printk(edac_dev, KERN_WARNING, | |
079708b9 DT |
583 | "CE ctl: %s, instance: %s, block: %s: %s\n", |
584 | edac_dev->ctl_name, instance->name, | |
585 | block ? block->name : "N/A", msg); | |
e27e3dac | 586 | } |
079708b9 | 587 | |
e27e3dac DT |
588 | EXPORT_SYMBOL_GPL(edac_device_handle_ce); |
589 | ||
590 | /* | |
591 | * edac_device_handle_ue | |
592 | * perform a common output and handling of an 'edac_dev' UE event | |
593 | */ | |
594 | void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev, | |
079708b9 | 595 | int inst_nr, int block_nr, const char *msg) |
e27e3dac DT |
596 | { |
597 | struct edac_device_instance *instance; | |
598 | struct edac_device_block *block = NULL; | |
599 | ||
600 | if ((inst_nr >= edac_dev->nr_instances) || (inst_nr < 0)) { | |
601 | edac_device_printk(edac_dev, KERN_ERR, | |
079708b9 DT |
602 | "INTERNAL ERROR: 'instance' out of range " |
603 | "(%d >= %d)\n", inst_nr, | |
604 | edac_dev->nr_instances); | |
e27e3dac DT |
605 | return; |
606 | } | |
607 | ||
608 | instance = edac_dev->instances + inst_nr; | |
609 | ||
610 | if ((block_nr >= instance->nr_blocks) || (block_nr < 0)) { | |
611 | edac_device_printk(edac_dev, KERN_ERR, | |
079708b9 DT |
612 | "INTERNAL ERROR: instance %d 'block' out of range " |
613 | "(%d >= %d)\n", inst_nr, block_nr, | |
614 | instance->nr_blocks); | |
e27e3dac DT |
615 | return; |
616 | } | |
617 | ||
618 | if (instance->nr_blocks > 0) { | |
619 | block = instance->blocks + block_nr; | |
620 | block->counters.ue_count++; | |
621 | } | |
622 | ||
623 | /* Propogate the count up the 'totals' tree */ | |
624 | instance->counters.ue_count++; | |
625 | edac_dev->counters.ue_count++; | |
626 | ||
627 | if (edac_device_get_log_ue(edac_dev)) | |
628 | edac_device_printk(edac_dev, KERN_EMERG, | |
079708b9 DT |
629 | "UE ctl: %s, instance: %s, block: %s: %s\n", |
630 | edac_dev->ctl_name, instance->name, | |
631 | block ? block->name : "N/A", msg); | |
e27e3dac DT |
632 | |
633 | if (edac_device_get_panic_on_ue(edac_dev)) | |
634 | panic("EDAC %s: UE instance: %s, block %s: %s\n", | |
079708b9 DT |
635 | edac_dev->ctl_name, instance->name, |
636 | block ? block->name : "N/A", msg); | |
e27e3dac | 637 | } |
e27e3dac | 638 | |
079708b9 | 639 | EXPORT_SYMBOL_GPL(edac_device_handle_ue); |