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> | |
52490c8d | 23 | #include <linux/jiffies.h> |
e27e3dac DT |
24 | #include <linux/spinlock.h> |
25 | #include <linux/list.h> | |
26 | #include <linux/sysdev.h> | |
27 | #include <linux/ctype.h> | |
28 | #include <linux/workqueue.h> | |
29 | #include <asm/uaccess.h> | |
30 | #include <asm/page.h> | |
31 | ||
32 | #include "edac_core.h" | |
33 | #include "edac_module.h" | |
34 | ||
52490c8d | 35 | /* lock to memory controller's control array 'edac_device_list' */ |
e27e3dac DT |
36 | static DECLARE_MUTEX(device_ctls_mutex); |
37 | static struct list_head edac_device_list = LIST_HEAD_INIT(edac_device_list); | |
38 | ||
e27e3dac DT |
39 | #ifdef CONFIG_EDAC_DEBUG |
40 | static void edac_device_dump_device(struct edac_device_ctl_info *edac_dev) | |
41 | { | |
079708b9 | 42 | debugf3("\tedac_dev = %p dev_idx=%d \n", edac_dev, edac_dev->dev_idx); |
e27e3dac DT |
43 | debugf4("\tedac_dev->edac_check = %p\n", edac_dev->edac_check); |
44 | debugf3("\tdev = %p\n", edac_dev->dev); | |
45 | debugf3("\tmod_name:ctl_name = %s:%s\n", | |
46 | edac_dev->mod_name, edac_dev->ctl_name); | |
47 | debugf3("\tpvt_info = %p\n\n", edac_dev->pvt_info); | |
48 | } | |
079708b9 | 49 | #endif /* CONFIG_EDAC_DEBUG */ |
e27e3dac DT |
50 | |
51 | /* | |
52490c8d DT |
52 | * edac_device_alloc_ctl_info() |
53 | * Allocate a new edac device control info structure | |
54 | * | |
55 | * The control structure is allocated in complete chunk | |
56 | * from the OS. It is in turn sub allocated to the | |
57 | * various objects that compose the struture | |
58 | * | |
59 | * The structure has a 'nr_instance' array within itself. | |
60 | * Each instance represents a major component | |
61 | * Example: L1 cache and L2 cache are 2 instance components | |
62 | * | |
63 | * Within each instance is an array of 'nr_blocks' blockoffsets | |
e27e3dac DT |
64 | */ |
65 | struct edac_device_ctl_info *edac_device_alloc_ctl_info( | |
66 | unsigned sz_private, | |
52490c8d DT |
67 | char *edac_device_name, unsigned nr_instances, |
68 | char *edac_block_name, unsigned nr_blocks, | |
69 | unsigned offset_value, /* zero, 1, or other based offset */ | |
70 | struct edac_attrib_spec *attrib_spec, unsigned nr_attribs) | |
e27e3dac DT |
71 | { |
72 | struct edac_device_ctl_info *dev_ctl; | |
73 | struct edac_device_instance *dev_inst, *inst; | |
74 | struct edac_device_block *dev_blk, *blk_p, *blk; | |
75 | struct edac_attrib *dev_attrib, *attrib_p, *attrib; | |
76 | unsigned total_size; | |
77 | unsigned count; | |
78 | unsigned instance, block, attr; | |
79 | void *pvt; | |
80 | ||
81 | debugf1("%s() instances=%d blocks=%d\n", | |
079708b9 | 82 | __func__, nr_instances, nr_blocks); |
e27e3dac DT |
83 | |
84 | /* Figure out the offsets of the various items from the start of an | |
85 | * ctl_info structure. We want the alignment of each item | |
86 | * to be at least as stringent as what the compiler would | |
87 | * provide if we could simply hardcode everything into a single struct. | |
88 | */ | |
52490c8d | 89 | dev_ctl = (struct edac_device_ctl_info *)NULL; |
e27e3dac DT |
90 | |
91 | /* Calc the 'end' offset past the ctl_info structure */ | |
7391c6dc | 92 | dev_inst = edac_align_ptr(&dev_ctl[1], sizeof(*dev_inst)); |
e27e3dac DT |
93 | |
94 | /* Calc the 'end' offset past the instance array */ | |
7391c6dc | 95 | dev_blk = edac_align_ptr(&dev_inst[nr_instances], sizeof(*dev_blk)); |
e27e3dac DT |
96 | |
97 | /* Calc the 'end' offset past the dev_blk array */ | |
98 | count = nr_instances * nr_blocks; | |
7391c6dc | 99 | dev_attrib = edac_align_ptr(&dev_blk[count], sizeof(*dev_attrib)); |
e27e3dac DT |
100 | |
101 | /* Check for case of NO attributes specified */ | |
102 | if (nr_attribs > 0) | |
103 | count *= nr_attribs; | |
104 | ||
105 | /* Calc the 'end' offset past the attributes array */ | |
079708b9 DT |
106 | pvt = edac_align_ptr(&dev_attrib[count], sz_private); |
107 | total_size = ((unsigned long)pvt) + sz_private; | |
e27e3dac DT |
108 | |
109 | /* Allocate the amount of memory for the set of control structures */ | |
52490c8d DT |
110 | dev_ctl = kzalloc(total_size, GFP_KERNEL); |
111 | if (dev_ctl == NULL) | |
e27e3dac DT |
112 | return NULL; |
113 | ||
114 | /* Adjust pointers so they point within the memory we just allocated | |
115 | * rather than an imaginary chunk of memory located at address 0. | |
116 | */ | |
117 | dev_inst = (struct edac_device_instance *) | |
052dfb45 | 118 | (((char *)dev_ctl) + ((unsigned long)dev_inst)); |
e27e3dac | 119 | dev_blk = (struct edac_device_block *) |
052dfb45 | 120 | (((char *)dev_ctl) + ((unsigned long)dev_blk)); |
e27e3dac | 121 | dev_attrib = (struct edac_attrib *) |
052dfb45 | 122 | (((char *)dev_ctl) + ((unsigned long)dev_attrib)); |
079708b9 | 123 | pvt = sz_private ? (((char *)dev_ctl) + ((unsigned long)pvt)) : NULL; |
e27e3dac | 124 | |
e27e3dac DT |
125 | dev_ctl->nr_instances = nr_instances; |
126 | dev_ctl->instances = dev_inst; | |
127 | dev_ctl->pvt_info = pvt; | |
128 | ||
52490c8d DT |
129 | /* Name of this edac device */ |
130 | snprintf(dev_ctl->name,sizeof(dev_ctl->name),"%s",edac_device_name); | |
e27e3dac DT |
131 | |
132 | /* Initialize every Instance */ | |
133 | for (instance = 0; instance < nr_instances; instance++) { | |
134 | inst = &dev_inst[instance]; | |
135 | inst->ctl = dev_ctl; | |
136 | inst->nr_blocks = nr_blocks; | |
137 | blk_p = &dev_blk[instance * nr_blocks]; | |
138 | inst->blocks = blk_p; | |
139 | ||
140 | /* name of this instance */ | |
141 | snprintf(inst->name, sizeof(inst->name), | |
079708b9 | 142 | "%s%u", edac_device_name, instance); |
e27e3dac DT |
143 | |
144 | /* Initialize every block in each instance */ | |
079708b9 | 145 | for (block = 0; block < nr_blocks; block++) { |
e27e3dac DT |
146 | blk = &blk_p[block]; |
147 | blk->instance = inst; | |
148 | blk->nr_attribs = nr_attribs; | |
149 | attrib_p = &dev_attrib[block * nr_attribs]; | |
150 | blk->attribs = attrib_p; | |
151 | snprintf(blk->name, sizeof(blk->name), | |
d391a7b8 | 152 | "%s%d", edac_block_name, block+offset_value); |
e27e3dac DT |
153 | |
154 | debugf1("%s() instance=%d block=%d name=%s\n", | |
079708b9 | 155 | __func__, instance, block, blk->name); |
e27e3dac DT |
156 | |
157 | if (attrib_spec != NULL) { | |
158 | /* when there is an attrib_spec passed int then | |
159 | * Initialize every attrib of each block | |
160 | */ | |
161 | for (attr = 0; attr < nr_attribs; attr++) { | |
162 | attrib = &attrib_p[attr]; | |
163 | attrib->block = blk; | |
164 | ||
165 | /* Link each attribute to the caller's | |
166 | * spec entry, for name and type | |
079708b9 | 167 | */ |
e27e3dac DT |
168 | attrib->spec = &attrib_spec[attr]; |
169 | } | |
170 | } | |
171 | } | |
172 | } | |
173 | ||
174 | /* Mark this instance as merely ALLOCATED */ | |
175 | dev_ctl->op_state = OP_ALLOC; | |
176 | ||
177 | return dev_ctl; | |
178 | } | |
179 | EXPORT_SYMBOL_GPL(edac_device_alloc_ctl_info); | |
180 | ||
181 | /* | |
182 | * edac_device_free_ctl_info() | |
183 | * frees the memory allocated by the edac_device_alloc_ctl_info() | |
184 | * function | |
185 | */ | |
079708b9 DT |
186 | void edac_device_free_ctl_info(struct edac_device_ctl_info *ctl_info) |
187 | { | |
e27e3dac DT |
188 | kfree(ctl_info); |
189 | } | |
079708b9 | 190 | EXPORT_SYMBOL_GPL(edac_device_free_ctl_info); |
e27e3dac DT |
191 | |
192 | /* | |
193 | * find_edac_device_by_dev | |
194 | * scans the edac_device list for a specific 'struct device *' | |
52490c8d DT |
195 | * |
196 | * lock to be held prior to call: device_ctls_mutex | |
197 | * | |
198 | * Return: | |
199 | * pointer to control structure managing 'dev' | |
200 | * NULL if not found on list | |
e27e3dac | 201 | */ |
079708b9 | 202 | static struct edac_device_ctl_info *find_edac_device_by_dev(struct device *dev) |
e27e3dac DT |
203 | { |
204 | struct edac_device_ctl_info *edac_dev; | |
205 | struct list_head *item; | |
206 | ||
207 | debugf3("%s()\n", __func__); | |
208 | ||
209 | list_for_each(item, &edac_device_list) { | |
210 | edac_dev = list_entry(item, struct edac_device_ctl_info, link); | |
211 | ||
212 | if (edac_dev->dev == dev) | |
213 | return edac_dev; | |
214 | } | |
215 | ||
216 | return NULL; | |
217 | } | |
218 | ||
219 | /* | |
220 | * add_edac_dev_to_global_list | |
221 | * Before calling this function, caller must | |
222 | * assign a unique value to edac_dev->dev_idx. | |
52490c8d DT |
223 | * |
224 | * lock to be held prior to call: device_ctls_mutex | |
225 | * | |
e27e3dac DT |
226 | * Return: |
227 | * 0 on success | |
228 | * 1 on failure. | |
229 | */ | |
079708b9 | 230 | static int add_edac_dev_to_global_list(struct edac_device_ctl_info *edac_dev) |
e27e3dac DT |
231 | { |
232 | struct list_head *item, *insert_before; | |
233 | struct edac_device_ctl_info *rover; | |
234 | ||
235 | insert_before = &edac_device_list; | |
236 | ||
237 | /* Determine if already on the list */ | |
52490c8d DT |
238 | rover = find_edac_device_by_dev(edac_dev->dev); |
239 | if (unlikely(rover != NULL)) | |
e27e3dac DT |
240 | goto fail0; |
241 | ||
242 | /* Insert in ascending order by 'dev_idx', so find position */ | |
243 | list_for_each(item, &edac_device_list) { | |
244 | rover = list_entry(item, struct edac_device_ctl_info, link); | |
245 | ||
246 | if (rover->dev_idx >= edac_dev->dev_idx) { | |
247 | if (unlikely(rover->dev_idx == edac_dev->dev_idx)) | |
248 | goto fail1; | |
249 | ||
250 | insert_before = item; | |
251 | break; | |
252 | } | |
253 | } | |
254 | ||
255 | list_add_tail_rcu(&edac_dev->link, insert_before); | |
256 | return 0; | |
257 | ||
052dfb45 | 258 | fail0: |
e27e3dac | 259 | edac_printk(KERN_WARNING, EDAC_MC, |
052dfb45 DT |
260 | "%s (%s) %s %s already assigned %d\n", |
261 | rover->dev->bus_id, dev_name(rover), | |
262 | rover->mod_name, rover->ctl_name, rover->dev_idx); | |
e27e3dac DT |
263 | return 1; |
264 | ||
052dfb45 | 265 | fail1: |
e27e3dac | 266 | edac_printk(KERN_WARNING, EDAC_MC, |
052dfb45 DT |
267 | "bug in low-level driver: attempt to assign\n" |
268 | " duplicate dev_idx %d in %s()\n", rover->dev_idx, | |
269 | __func__); | |
e27e3dac DT |
270 | return 1; |
271 | } | |
272 | ||
273 | /* | |
274 | * complete_edac_device_list_del | |
52490c8d DT |
275 | * |
276 | * callback function when reference count is zero | |
e27e3dac DT |
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 | |
52490c8d DT |
289 | * |
290 | * remove the RCU, setup for a callback call, then wait for the | |
291 | * callback to occur | |
e27e3dac | 292 | */ |
079708b9 | 293 | static void del_edac_device_from_global_list(struct edac_device_ctl_info |
052dfb45 | 294 | *edac_device) |
e27e3dac DT |
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 | */ | |
079708b9 | 311 | struct edac_device_ctl_info *edac_device_find(int idx) |
e27e3dac DT |
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 | } | |
52490c8d | 331 | EXPORT_SYMBOL_GPL(edac_device_find); |
e27e3dac DT |
332 | |
333 | /* | |
81d87cb1 | 334 | * edac_device_workq_function |
e27e3dac DT |
335 | * performs the operation scheduled by a workq request |
336 | */ | |
81d87cb1 | 337 | static void edac_device_workq_function(struct work_struct *work_req) |
e27e3dac | 338 | { |
079708b9 DT |
339 | struct delayed_work *d_work = (struct delayed_work *)work_req; |
340 | struct edac_device_ctl_info *edac_dev = to_edac_device_ctl_work(d_work); | |
e27e3dac DT |
341 | |
342 | //debugf0("%s() here and running\n", __func__); | |
52490c8d | 343 | down(&device_ctls_mutex); |
e27e3dac DT |
344 | |
345 | /* Only poll controllers that are running polled and have a check */ | |
346 | if ((edac_dev->op_state == OP_RUNNING_POLL) && | |
052dfb45 DT |
347 | (edac_dev->edac_check != NULL)) { |
348 | edac_dev->edac_check(edac_dev); | |
e27e3dac DT |
349 | } |
350 | ||
52490c8d | 351 | up(&device_ctls_mutex); |
e27e3dac DT |
352 | |
353 | /* Reschedule */ | |
079708b9 | 354 | queue_delayed_work(edac_workqueue, &edac_dev->work, edac_dev->delay); |
e27e3dac DT |
355 | } |
356 | ||
357 | /* | |
81d87cb1 | 358 | * edac_device_workq_setup |
e27e3dac DT |
359 | * initialize a workq item for this edac_device instance |
360 | * passing in the new delay period in msec | |
361 | */ | |
81d87cb1 | 362 | void edac_device_workq_setup(struct edac_device_ctl_info *edac_dev, |
052dfb45 | 363 | unsigned msec) |
e27e3dac DT |
364 | { |
365 | debugf0("%s()\n", __func__); | |
366 | ||
367 | edac_dev->poll_msec = msec; | |
52490c8d | 368 | edac_dev->delay = msecs_to_jiffies(msec); /* Calc delay jiffies */ |
e27e3dac | 369 | |
81d87cb1 | 370 | INIT_DELAYED_WORK(&edac_dev->work, edac_device_workq_function); |
81d87cb1 | 371 | queue_delayed_work(edac_workqueue, &edac_dev->work, edac_dev->delay); |
e27e3dac DT |
372 | } |
373 | ||
374 | /* | |
81d87cb1 | 375 | * edac_device_workq_teardown |
e27e3dac DT |
376 | * stop the workq processing on this edac_dev |
377 | */ | |
81d87cb1 | 378 | void edac_device_workq_teardown(struct edac_device_ctl_info *edac_dev) |
e27e3dac DT |
379 | { |
380 | int status; | |
381 | ||
382 | status = cancel_delayed_work(&edac_dev->work); | |
383 | if (status == 0) { | |
384 | /* workq instance might be running, wait for it */ | |
385 | flush_workqueue(edac_workqueue); | |
386 | } | |
387 | } | |
388 | ||
389 | /* | |
390 | * edac_device_reset_delay_period | |
391 | */ | |
392 | ||
079708b9 | 393 | void edac_device_reset_delay_period(struct edac_device_ctl_info *edac_dev, |
052dfb45 | 394 | unsigned long value) |
e27e3dac | 395 | { |
52490c8d | 396 | down(&device_ctls_mutex); |
e27e3dac DT |
397 | |
398 | /* cancel the current workq request */ | |
81d87cb1 | 399 | edac_device_workq_teardown(edac_dev); |
e27e3dac DT |
400 | |
401 | /* restart the workq request, with new delay value */ | |
81d87cb1 | 402 | edac_device_workq_setup(edac_dev, value); |
e27e3dac | 403 | |
52490c8d | 404 | up(&device_ctls_mutex); |
e27e3dac DT |
405 | } |
406 | ||
e27e3dac DT |
407 | /** |
408 | * edac_device_add_device: Insert the 'edac_dev' structure into the | |
409 | * edac_device global list and create sysfs entries associated with | |
410 | * edac_device structure. | |
411 | * @edac_device: pointer to the edac_device structure to be added to the list | |
412 | * @edac_idx: A unique numeric identifier to be assigned to the | |
413 | * 'edac_device' structure. | |
414 | * | |
415 | * Return: | |
416 | * 0 Success | |
417 | * !0 Failure | |
418 | */ | |
419 | int edac_device_add_device(struct edac_device_ctl_info *edac_dev, int edac_idx) | |
420 | { | |
421 | debugf0("%s()\n", __func__); | |
422 | ||
423 | edac_dev->dev_idx = edac_idx; | |
424 | #ifdef CONFIG_EDAC_DEBUG | |
425 | if (edac_debug_level >= 3) | |
426 | edac_device_dump_device(edac_dev); | |
427 | #endif | |
52490c8d | 428 | down(&device_ctls_mutex); |
e27e3dac DT |
429 | |
430 | if (add_edac_dev_to_global_list(edac_dev)) | |
431 | goto fail0; | |
432 | ||
433 | /* set load time so that error rate can be tracked */ | |
434 | edac_dev->start_time = jiffies; | |
435 | ||
436 | /* create this instance's sysfs entries */ | |
437 | if (edac_device_create_sysfs(edac_dev)) { | |
438 | edac_device_printk(edac_dev, KERN_WARNING, | |
052dfb45 | 439 | "failed to create sysfs device\n"); |
e27e3dac DT |
440 | goto fail1; |
441 | } | |
442 | ||
443 | /* If there IS a check routine, then we are running POLLED */ | |
444 | if (edac_dev->edac_check != NULL) { | |
445 | /* This instance is NOW RUNNING */ | |
446 | edac_dev->op_state = OP_RUNNING_POLL; | |
447 | ||
81d87cb1 DJ |
448 | /* |
449 | * enable workq processing on this instance, | |
450 | * default = 1000 msec | |
451 | */ | |
452 | edac_device_workq_setup(edac_dev, 1000); | |
e27e3dac DT |
453 | } else { |
454 | edac_dev->op_state = OP_RUNNING_INTERRUPT; | |
455 | } | |
456 | ||
e27e3dac DT |
457 | /* Report action taken */ |
458 | edac_device_printk(edac_dev, KERN_INFO, | |
052dfb45 DT |
459 | "Giving out device to module '%s' controller " |
460 | "'%s': DEV '%s' (%s)\n", | |
461 | edac_dev->mod_name, | |
462 | edac_dev->ctl_name, | |
463 | dev_name(edac_dev), | |
464 | edac_op_state_toString(edac_dev->op_state)); | |
e27e3dac | 465 | |
52490c8d | 466 | up(&device_ctls_mutex); |
e27e3dac DT |
467 | return 0; |
468 | ||
052dfb45 | 469 | fail1: |
e27e3dac DT |
470 | /* Some error, so remove the entry from the lsit */ |
471 | del_edac_device_from_global_list(edac_dev); | |
472 | ||
052dfb45 | 473 | fail0: |
52490c8d | 474 | up(&device_ctls_mutex); |
e27e3dac DT |
475 | return 1; |
476 | } | |
477 | EXPORT_SYMBOL_GPL(edac_device_add_device); | |
478 | ||
479 | /** | |
480 | * edac_device_del_device: | |
481 | * Remove sysfs entries for specified edac_device structure and | |
482 | * then remove edac_device structure from global list | |
483 | * | |
484 | * @pdev: | |
485 | * Pointer to 'struct device' representing edac_device | |
486 | * structure to remove. | |
487 | * | |
488 | * Return: | |
489 | * Pointer to removed edac_device structure, | |
490 | * OR NULL if device not found. | |
491 | */ | |
079708b9 | 492 | struct edac_device_ctl_info *edac_device_del_device(struct device *dev) |
e27e3dac DT |
493 | { |
494 | struct edac_device_ctl_info *edac_dev; | |
495 | ||
496 | debugf0("MC: %s()\n", __func__); | |
497 | ||
52490c8d | 498 | down(&device_ctls_mutex); |
e27e3dac | 499 | |
52490c8d DT |
500 | /* Find the structure on the list, if not there, then leave */ |
501 | edac_dev = find_edac_device_by_dev(dev); | |
502 | if (edac_dev == NULL) { | |
503 | up(&device_ctls_mutex); | |
e27e3dac DT |
504 | return NULL; |
505 | } | |
506 | ||
507 | /* mark this instance as OFFLINE */ | |
508 | edac_dev->op_state = OP_OFFLINE; | |
509 | ||
510 | /* clear workq processing on this instance */ | |
81d87cb1 | 511 | edac_device_workq_teardown(edac_dev); |
e27e3dac DT |
512 | |
513 | /* Tear down the sysfs entries for this instance */ | |
514 | edac_device_remove_sysfs(edac_dev); | |
515 | ||
516 | /* deregister from global list */ | |
517 | del_edac_device_from_global_list(edac_dev); | |
518 | ||
52490c8d | 519 | up(&device_ctls_mutex); |
e27e3dac DT |
520 | |
521 | edac_printk(KERN_INFO, EDAC_MC, | |
052dfb45 DT |
522 | "Removed device %d for %s %s: DEV %s\n", |
523 | edac_dev->dev_idx, | |
524 | edac_dev->mod_name, edac_dev->ctl_name, dev_name(edac_dev)); | |
e27e3dac DT |
525 | |
526 | return edac_dev; | |
527 | } | |
079708b9 | 528 | EXPORT_SYMBOL_GPL(edac_device_del_device); |
e27e3dac DT |
529 | |
530 | static inline int edac_device_get_log_ce(struct edac_device_ctl_info *edac_dev) | |
531 | { | |
532 | return edac_dev->log_ce; | |
533 | } | |
534 | ||
535 | static inline int edac_device_get_log_ue(struct edac_device_ctl_info *edac_dev) | |
536 | { | |
537 | return edac_dev->log_ue; | |
538 | } | |
539 | ||
079708b9 | 540 | static inline int edac_device_get_panic_on_ue(struct edac_device_ctl_info |
052dfb45 | 541 | *edac_dev) |
e27e3dac DT |
542 | { |
543 | return edac_dev->panic_on_ue; | |
544 | } | |
545 | ||
546 | /* | |
547 | * edac_device_handle_ce | |
548 | * perform a common output and handling of an 'edac_dev' CE event | |
549 | */ | |
550 | void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev, | |
052dfb45 | 551 | int inst_nr, int block_nr, const char *msg) |
e27e3dac DT |
552 | { |
553 | struct edac_device_instance *instance; | |
554 | struct edac_device_block *block = NULL; | |
555 | ||
556 | if ((inst_nr >= edac_dev->nr_instances) || (inst_nr < 0)) { | |
557 | edac_device_printk(edac_dev, KERN_ERR, | |
052dfb45 DT |
558 | "INTERNAL ERROR: 'instance' out of range " |
559 | "(%d >= %d)\n", inst_nr, | |
560 | edac_dev->nr_instances); | |
e27e3dac DT |
561 | return; |
562 | } | |
563 | ||
564 | instance = edac_dev->instances + inst_nr; | |
565 | ||
566 | if ((block_nr >= instance->nr_blocks) || (block_nr < 0)) { | |
567 | edac_device_printk(edac_dev, KERN_ERR, | |
052dfb45 DT |
568 | "INTERNAL ERROR: instance %d 'block' " |
569 | "out of range (%d >= %d)\n", | |
570 | inst_nr, block_nr, | |
571 | instance->nr_blocks); | |
e27e3dac DT |
572 | return; |
573 | } | |
574 | ||
575 | if (instance->nr_blocks > 0) { | |
576 | block = instance->blocks + block_nr; | |
577 | block->counters.ce_count++; | |
578 | } | |
579 | ||
580 | /* Propogate the count up the 'totals' tree */ | |
581 | instance->counters.ce_count++; | |
582 | edac_dev->counters.ce_count++; | |
583 | ||
584 | if (edac_device_get_log_ce(edac_dev)) | |
585 | edac_device_printk(edac_dev, KERN_WARNING, | |
052dfb45 DT |
586 | "CE: %s instance: %s block: %s '%s'\n", |
587 | edac_dev->ctl_name, instance->name, | |
588 | block ? block->name : "N/A", msg); | |
e27e3dac DT |
589 | } |
590 | EXPORT_SYMBOL_GPL(edac_device_handle_ce); | |
591 | ||
592 | /* | |
593 | * edac_device_handle_ue | |
594 | * perform a common output and handling of an 'edac_dev' UE event | |
595 | */ | |
596 | void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev, | |
052dfb45 | 597 | int inst_nr, int block_nr, const char *msg) |
e27e3dac DT |
598 | { |
599 | struct edac_device_instance *instance; | |
600 | struct edac_device_block *block = NULL; | |
601 | ||
602 | if ((inst_nr >= edac_dev->nr_instances) || (inst_nr < 0)) { | |
603 | edac_device_printk(edac_dev, KERN_ERR, | |
052dfb45 DT |
604 | "INTERNAL ERROR: 'instance' out of range " |
605 | "(%d >= %d)\n", inst_nr, | |
606 | edac_dev->nr_instances); | |
e27e3dac DT |
607 | return; |
608 | } | |
609 | ||
610 | instance = edac_dev->instances + inst_nr; | |
611 | ||
612 | if ((block_nr >= instance->nr_blocks) || (block_nr < 0)) { | |
613 | edac_device_printk(edac_dev, KERN_ERR, | |
052dfb45 DT |
614 | "INTERNAL ERROR: instance %d 'block' " |
615 | "out of range (%d >= %d)\n", | |
616 | inst_nr, block_nr, | |
617 | instance->nr_blocks); | |
e27e3dac DT |
618 | return; |
619 | } | |
620 | ||
621 | if (instance->nr_blocks > 0) { | |
622 | block = instance->blocks + block_nr; | |
623 | block->counters.ue_count++; | |
624 | } | |
625 | ||
626 | /* Propogate the count up the 'totals' tree */ | |
627 | instance->counters.ue_count++; | |
628 | edac_dev->counters.ue_count++; | |
629 | ||
630 | if (edac_device_get_log_ue(edac_dev)) | |
631 | edac_device_printk(edac_dev, KERN_EMERG, | |
052dfb45 DT |
632 | "UE: %s instance: %s block: %s '%s'\n", |
633 | edac_dev->ctl_name, instance->name, | |
634 | block ? block->name : "N/A", msg); | |
e27e3dac DT |
635 | |
636 | if (edac_device_get_panic_on_ue(edac_dev)) | |
d391a7b8 | 637 | panic("EDAC %s: UE instance: %s block %s '%s'\n", |
052dfb45 DT |
638 | edac_dev->ctl_name, instance->name, |
639 | block ? block->name : "N/A", msg); | |
e27e3dac | 640 | } |
079708b9 | 641 | EXPORT_SYMBOL_GPL(edac_device_handle_ue); |