2 * file for managing the edac_device class of devices for EDAC
4 * (C) 2007 SoftwareBitMaker (http://www.softwarebitmaker.com)
6 * This file may be distributed under the terms of the
7 * GNU General Public License.
9 * Written Doug Thompson <norsk5@xmission.com>
13 #include <linux/ctype.h>
14 #include <linux/module.h>
16 #include "edac_core.h"
17 #include "edac_module.h"
19 #define EDAC_DEVICE_SYMLINK "device"
21 #define to_edacdev(k) container_of(k, struct edac_device_ctl_info, kobj)
22 #define to_edacdev_attr(a) container_of(a, struct edacdev_attribute, attr)
26 * Set of edac_device_ctl_info attribute store/show functions
30 static ssize_t edac_device_ctl_log_ue_show(struct edac_device_ctl_info
31 *ctl_info, char *data)
33 return sprintf(data, "%u\n", ctl_info->log_ue);
36 static ssize_t edac_device_ctl_log_ue_store(struct edac_device_ctl_info
37 *ctl_info, const char *data,
40 /* if parameter is zero, turn off flag, if non-zero turn on flag */
41 ctl_info->log_ue = (simple_strtoul(data, NULL, 0) != 0);
47 static ssize_t edac_device_ctl_log_ce_show(struct edac_device_ctl_info
48 *ctl_info, char *data)
50 return sprintf(data, "%u\n", ctl_info->log_ce);
53 static ssize_t edac_device_ctl_log_ce_store(struct edac_device_ctl_info
54 *ctl_info, const char *data,
57 /* if parameter is zero, turn off flag, if non-zero turn on flag */
58 ctl_info->log_ce = (simple_strtoul(data, NULL, 0) != 0);
64 static ssize_t edac_device_ctl_panic_on_ue_show(struct edac_device_ctl_info
65 *ctl_info, char *data)
67 return sprintf(data, "%u\n", ctl_info->panic_on_ue);
70 static ssize_t edac_device_ctl_panic_on_ue_store(struct edac_device_ctl_info
71 *ctl_info, const char *data,
74 /* if parameter is zero, turn off flag, if non-zero turn on flag */
75 ctl_info->panic_on_ue = (simple_strtoul(data, NULL, 0) != 0);
80 /* 'poll_msec' show and store functions*/
81 static ssize_t edac_device_ctl_poll_msec_show(struct edac_device_ctl_info
82 *ctl_info, char *data)
84 return sprintf(data, "%u\n", ctl_info->poll_msec);
87 static ssize_t edac_device_ctl_poll_msec_store(struct edac_device_ctl_info
88 *ctl_info, const char *data,
93 /* get the value and enforce that it is non-zero, must be at least
94 * one millisecond for the delay period, between scans
95 * Then cancel last outstanding delay for the work request
98 value = simple_strtoul(data, NULL, 0);
99 edac_device_reset_delay_period(ctl_info, value);
104 /* edac_device_ctl_info specific attribute structure */
105 struct ctl_info_attribute {
106 struct attribute attr;
107 ssize_t(*show) (struct edac_device_ctl_info *, char *);
108 ssize_t(*store) (struct edac_device_ctl_info *, const char *, size_t);
111 #define to_ctl_info(k) container_of(k, struct edac_device_ctl_info, kobj)
112 #define to_ctl_info_attr(a) container_of(a,struct ctl_info_attribute,attr)
114 /* Function to 'show' fields from the edac_dev 'ctl_info' structure */
115 static ssize_t edac_dev_ctl_info_show(struct kobject *kobj,
116 struct attribute *attr, char *buffer)
118 struct edac_device_ctl_info *edac_dev = to_ctl_info(kobj);
119 struct ctl_info_attribute *ctl_info_attr = to_ctl_info_attr(attr);
121 if (ctl_info_attr->show)
122 return ctl_info_attr->show(edac_dev, buffer);
126 /* Function to 'store' fields into the edac_dev 'ctl_info' structure */
127 static ssize_t edac_dev_ctl_info_store(struct kobject *kobj,
128 struct attribute *attr,
129 const char *buffer, size_t count)
131 struct edac_device_ctl_info *edac_dev = to_ctl_info(kobj);
132 struct ctl_info_attribute *ctl_info_attr = to_ctl_info_attr(attr);
134 if (ctl_info_attr->store)
135 return ctl_info_attr->store(edac_dev, buffer, count);
139 /* edac_dev file operations for an 'ctl_info' */
140 static struct sysfs_ops device_ctl_info_ops = {
141 .show = edac_dev_ctl_info_show,
142 .store = edac_dev_ctl_info_store
145 #define CTL_INFO_ATTR(_name,_mode,_show,_store) \
146 static struct ctl_info_attribute attr_ctl_info_##_name = { \
147 .attr = {.name = __stringify(_name), .mode = _mode }, \
152 /* Declare the various ctl_info attributes here and their respective ops */
153 CTL_INFO_ATTR(log_ue, S_IRUGO | S_IWUSR,
154 edac_device_ctl_log_ue_show, edac_device_ctl_log_ue_store);
155 CTL_INFO_ATTR(log_ce, S_IRUGO | S_IWUSR,
156 edac_device_ctl_log_ce_show, edac_device_ctl_log_ce_store);
157 CTL_INFO_ATTR(panic_on_ue, S_IRUGO | S_IWUSR,
158 edac_device_ctl_panic_on_ue_show,
159 edac_device_ctl_panic_on_ue_store);
160 CTL_INFO_ATTR(poll_msec, S_IRUGO | S_IWUSR,
161 edac_device_ctl_poll_msec_show, edac_device_ctl_poll_msec_store);
163 /* Base Attributes of the EDAC_DEVICE ECC object */
164 static struct ctl_info_attribute *device_ctrl_attr[] = {
165 &attr_ctl_info_panic_on_ue,
166 &attr_ctl_info_log_ue,
167 &attr_ctl_info_log_ce,
168 &attr_ctl_info_poll_msec,
173 * edac_device_ctrl_master_release
175 * called when the reference count for the 'main' kobj
176 * for a edac_device control struct reaches zero
178 * Reference count model:
179 * One 'main' kobject for each control structure allocated.
180 * That main kobj is initially set to one AND
181 * the reference count for the EDAC 'core' module is
182 * bumped by one, thus added 'keep in memory' dependency.
184 * Each new internal kobj (in instances and blocks) then
185 * bumps the 'main' kobject.
187 * When they are released their release functions decrement
190 * When the main kobj reaches zero (0) then THIS function
191 * is called which then decrements the EDAC 'core' module.
192 * When the module reference count reaches zero then the
193 * module no longer has dependency on keeping the release
194 * function code in memory and module can be unloaded.
196 * This will support several control objects as well, each
197 * with its own 'main' kobj.
199 static void edac_device_ctrl_master_release(struct kobject *kobj)
201 struct edac_device_ctl_info *edac_dev = to_edacdev(kobj);
203 debugf4("%s() control index=%d\n", __func__, edac_dev->dev_idx);
205 /* decrement the EDAC CORE module ref count */
206 module_put(edac_dev->owner);
208 /* free the control struct containing the 'main' kobj
209 * passed in to this routine
214 /* ktype for the main (master) kobject */
215 static struct kobj_type ktype_device_ctrl = {
216 .release = edac_device_ctrl_master_release,
217 .sysfs_ops = &device_ctl_info_ops,
218 .default_attrs = (struct attribute **)device_ctrl_attr,
222 * edac_device_register_sysfs_main_kobj
224 * perform the high level setup for the new edac_device instance
229 int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev)
231 struct sysdev_class *edac_class;
234 debugf1("%s()\n", __func__);
236 /* get the /sys/devices/system/edac reference */
237 edac_class = edac_get_edac_class();
238 if (edac_class == NULL) {
239 debugf1("%s() no edac_class error\n", __func__);
244 /* Point to the 'edac_class' this instance 'reports' to */
245 edac_dev->edac_class = edac_class;
247 /* Init the devices's kobject */
248 memset(&edac_dev->kobj, 0, sizeof(struct kobject));
250 /* Record which module 'owns' this control structure
251 * and bump the ref count of the module
253 edac_dev->owner = THIS_MODULE;
255 if (!try_module_get(edac_dev->owner)) {
261 err = kobject_init_and_add(&edac_dev->kobj, &ktype_device_ctrl,
262 &edac_class->kset.kobj,
263 "%s", edac_dev->name);
265 debugf1("%s()Failed to register '.../edac/%s'\n",
266 __func__, edac_dev->name);
269 kobject_uevent(&edac_dev->kobj, KOBJ_ADD);
271 /* At this point, to 'free' the control struct,
272 * edac_device_unregister_sysfs_main_kobj() must be used
275 debugf4("%s() Registered '.../edac/%s' kobject\n",
276 __func__, edac_dev->name);
280 /* Error exit stack */
282 module_put(edac_dev->owner);
289 * edac_device_unregister_sysfs_main_kobj:
290 * the '..../edac/<name>' kobject
292 void edac_device_unregister_sysfs_main_kobj(
293 struct edac_device_ctl_info *edac_dev)
295 debugf0("%s()\n", __func__);
296 debugf4("%s() name of kobject is: %s\n",
297 __func__, kobject_name(&edac_dev->kobj));
300 * Unregister the edac device's kobject and
301 * allow for reference count to reach 0 at which point
302 * the callback will be called to:
303 * a) module_put() this module
304 * b) 'kfree' the memory
306 kobject_put(&edac_dev->kobj);
309 /* edac_dev -> instance information */
312 * Set of low-level instance attribute show functions
314 static ssize_t instance_ue_count_show(struct edac_device_instance *instance,
317 return sprintf(data, "%u\n", instance->counters.ue_count);
320 static ssize_t instance_ce_count_show(struct edac_device_instance *instance,
323 return sprintf(data, "%u\n", instance->counters.ce_count);
326 #define to_instance(k) container_of(k, struct edac_device_instance, kobj)
327 #define to_instance_attr(a) container_of(a,struct instance_attribute,attr)
329 /* DEVICE instance kobject release() function */
330 static void edac_device_ctrl_instance_release(struct kobject *kobj)
332 struct edac_device_instance *instance;
334 debugf1("%s()\n", __func__);
336 /* map from this kobj to the main control struct
337 * and then dec the main kobj count
339 instance = to_instance(kobj);
340 kobject_put(&instance->ctl->kobj);
343 /* instance specific attribute structure */
344 struct instance_attribute {
345 struct attribute attr;
346 ssize_t(*show) (struct edac_device_instance *, char *);
347 ssize_t(*store) (struct edac_device_instance *, const char *, size_t);
350 /* Function to 'show' fields from the edac_dev 'instance' structure */
351 static ssize_t edac_dev_instance_show(struct kobject *kobj,
352 struct attribute *attr, char *buffer)
354 struct edac_device_instance *instance = to_instance(kobj);
355 struct instance_attribute *instance_attr = to_instance_attr(attr);
357 if (instance_attr->show)
358 return instance_attr->show(instance, buffer);
362 /* Function to 'store' fields into the edac_dev 'instance' structure */
363 static ssize_t edac_dev_instance_store(struct kobject *kobj,
364 struct attribute *attr,
365 const char *buffer, size_t count)
367 struct edac_device_instance *instance = to_instance(kobj);
368 struct instance_attribute *instance_attr = to_instance_attr(attr);
370 if (instance_attr->store)
371 return instance_attr->store(instance, buffer, count);
375 /* edac_dev file operations for an 'instance' */
376 static struct sysfs_ops device_instance_ops = {
377 .show = edac_dev_instance_show,
378 .store = edac_dev_instance_store
381 #define INSTANCE_ATTR(_name,_mode,_show,_store) \
382 static struct instance_attribute attr_instance_##_name = { \
383 .attr = {.name = __stringify(_name), .mode = _mode }, \
389 * Define attributes visible for the edac_device instance object
390 * Each contains a pointer to a show and an optional set
391 * function pointer that does the low level output/input
393 INSTANCE_ATTR(ce_count, S_IRUGO, instance_ce_count_show, NULL);
394 INSTANCE_ATTR(ue_count, S_IRUGO, instance_ue_count_show, NULL);
396 /* list of edac_dev 'instance' attributes */
397 static struct instance_attribute *device_instance_attr[] = {
398 &attr_instance_ce_count,
399 &attr_instance_ue_count,
403 /* The 'ktype' for each edac_dev 'instance' */
404 static struct kobj_type ktype_instance_ctrl = {
405 .release = edac_device_ctrl_instance_release,
406 .sysfs_ops = &device_instance_ops,
407 .default_attrs = (struct attribute **)device_instance_attr,
410 /* edac_dev -> instance -> block information */
412 #define to_block(k) container_of(k, struct edac_device_block, kobj)
413 #define to_block_attr(a) \
414 container_of(a, struct edac_dev_sysfs_block_attribute, attr)
417 * Set of low-level block attribute show functions
419 static ssize_t block_ue_count_show(struct kobject *kobj,
420 struct attribute *attr, char *data)
422 struct edac_device_block *block = to_block(kobj);
424 return sprintf(data, "%u\n", block->counters.ue_count);
427 static ssize_t block_ce_count_show(struct kobject *kobj,
428 struct attribute *attr, char *data)
430 struct edac_device_block *block = to_block(kobj);
432 return sprintf(data, "%u\n", block->counters.ce_count);
435 /* DEVICE block kobject release() function */
436 static void edac_device_ctrl_block_release(struct kobject *kobj)
438 struct edac_device_block *block;
440 debugf1("%s()\n", __func__);
442 /* get the container of the kobj */
443 block = to_block(kobj);
445 /* map from 'block kobj' to 'block->instance->controller->main_kobj'
446 * now 'release' the block kobject
448 kobject_put(&block->instance->ctl->kobj);
452 /* Function to 'show' fields from the edac_dev 'block' structure */
453 static ssize_t edac_dev_block_show(struct kobject *kobj,
454 struct attribute *attr, char *buffer)
456 struct edac_dev_sysfs_block_attribute *block_attr =
459 if (block_attr->show)
460 return block_attr->show(kobj, attr, buffer);
464 /* Function to 'store' fields into the edac_dev 'block' structure */
465 static ssize_t edac_dev_block_store(struct kobject *kobj,
466 struct attribute *attr,
467 const char *buffer, size_t count)
469 struct edac_dev_sysfs_block_attribute *block_attr;
471 block_attr = to_block_attr(attr);
473 if (block_attr->store)
474 return block_attr->store(kobj, attr, buffer, count);
478 /* edac_dev file operations for a 'block' */
479 static struct sysfs_ops device_block_ops = {
480 .show = edac_dev_block_show,
481 .store = edac_dev_block_store
484 #define BLOCK_ATTR(_name,_mode,_show,_store) \
485 static struct edac_dev_sysfs_block_attribute attr_block_##_name = { \
486 .attr = {.name = __stringify(_name), .mode = _mode }, \
491 BLOCK_ATTR(ce_count, S_IRUGO, block_ce_count_show, NULL);
492 BLOCK_ATTR(ue_count, S_IRUGO, block_ue_count_show, NULL);
494 /* list of edac_dev 'block' attributes */
495 static struct edac_dev_sysfs_block_attribute *device_block_attr[] = {
496 &attr_block_ce_count,
497 &attr_block_ue_count,
501 /* The 'ktype' for each edac_dev 'block' */
502 static struct kobj_type ktype_block_ctrl = {
503 .release = edac_device_ctrl_block_release,
504 .sysfs_ops = &device_block_ops,
505 .default_attrs = (struct attribute **)device_block_attr,
508 /* block ctor/dtor code */
511 * edac_device_create_block
513 static int edac_device_create_block(struct edac_device_ctl_info *edac_dev,
514 struct edac_device_instance *instance,
515 struct edac_device_block *block)
519 struct edac_dev_sysfs_block_attribute *sysfs_attrib;
520 struct kobject *main_kobj;
522 debugf4("%s() Instance '%s' inst_p=%p block '%s' block_p=%p\n",
523 __func__, instance->name, instance, block->name, block);
524 debugf4("%s() block kobj=%p block kobj->parent=%p\n",
525 __func__, &block->kobj, &block->kobj.parent);
527 /* init this block's kobject */
528 memset(&block->kobj, 0, sizeof(struct kobject));
530 /* bump the main kobject's reference count for this controller
531 * and this instance is dependant on the main
533 main_kobj = kobject_get(&edac_dev->kobj);
539 /* Add this block's kobject */
540 err = kobject_init_and_add(&block->kobj, &ktype_block_ctrl,
544 debugf1("%s() Failed to register instance '%s'\n",
545 __func__, block->name);
546 kobject_put(main_kobj);
551 /* If there are driver level block attributes, then added them
552 * to the block kobject
554 sysfs_attrib = block->block_attributes;
555 if (sysfs_attrib && block->nr_attribs) {
556 for (i = 0; i < block->nr_attribs; i++, sysfs_attrib++) {
558 debugf4("%s() creating block attrib='%s' "
559 "attrib->%p to kobj=%p\n",
561 sysfs_attrib->attr.name,
562 sysfs_attrib, &block->kobj);
564 /* Create each block_attribute file */
565 err = sysfs_create_file(&block->kobj,
566 &sysfs_attrib->attr);
571 kobject_uevent(&block->kobj, KOBJ_ADD);
575 /* Error unwind stack */
577 kobject_put(&block->kobj);
584 * edac_device_delete_block(edac_dev,block);
586 static void edac_device_delete_block(struct edac_device_ctl_info *edac_dev,
587 struct edac_device_block *block)
589 struct edac_dev_sysfs_block_attribute *sysfs_attrib;
592 /* if this block has 'attributes' then we need to iterate over the list
593 * and 'remove' the attributes on this block
595 sysfs_attrib = block->block_attributes;
596 if (sysfs_attrib && block->nr_attribs) {
597 for (i = 0; i < block->nr_attribs; i++, sysfs_attrib++) {
599 /* remove each block_attrib file */
600 sysfs_remove_file(&block->kobj,
601 (struct attribute *) sysfs_attrib);
605 /* unregister this block's kobject, SEE:
606 * edac_device_ctrl_block_release() callback operation
608 kobject_put(&block->kobj);
611 /* instance ctor/dtor code */
614 * edac_device_create_instance
615 * create just one instance of an edac_device 'instance'
617 static int edac_device_create_instance(struct edac_device_ctl_info *edac_dev,
622 struct edac_device_instance *instance;
623 struct kobject *main_kobj;
625 instance = &edac_dev->instances[idx];
627 /* Init the instance's kobject */
628 memset(&instance->kobj, 0, sizeof(struct kobject));
630 instance->ctl = edac_dev;
632 /* bump the main kobject's reference count for this controller
633 * and this instance is dependant on the main
635 main_kobj = kobject_get(&edac_dev->kobj);
641 /* Formally register this instance's kobject under the edac_device */
642 err = kobject_init_and_add(&instance->kobj, &ktype_instance_ctrl,
643 &edac_dev->kobj, "%s", instance->name);
645 debugf2("%s() Failed to register instance '%s'\n",
646 __func__, instance->name);
647 kobject_put(main_kobj);
651 debugf4("%s() now register '%d' blocks for instance %d\n",
652 __func__, instance->nr_blocks, idx);
654 /* register all blocks of this instance */
655 for (i = 0; i < instance->nr_blocks; i++) {
656 err = edac_device_create_block(edac_dev, instance,
657 &instance->blocks[i]);
659 /* If any fail, remove all previous ones */
660 for (j = 0; j < i; j++)
661 edac_device_delete_block(edac_dev,
662 &instance->blocks[j]);
663 goto err_release_instance_kobj;
666 kobject_uevent(&instance->kobj, KOBJ_ADD);
668 debugf4("%s() Registered instance %d '%s' kobject\n",
669 __func__, idx, instance->name);
673 /* error unwind stack */
674 err_release_instance_kobj:
675 kobject_put(&instance->kobj);
682 * edac_device_remove_instance
683 * remove an edac_device instance
685 static void edac_device_delete_instance(struct edac_device_ctl_info *edac_dev,
688 struct edac_device_instance *instance;
691 instance = &edac_dev->instances[idx];
693 /* unregister all blocks in this instance */
694 for (i = 0; i < instance->nr_blocks; i++)
695 edac_device_delete_block(edac_dev, &instance->blocks[i]);
697 /* unregister this instance's kobject, SEE:
698 * edac_device_ctrl_instance_release() for callback operation
700 kobject_put(&instance->kobj);
704 * edac_device_create_instances
705 * create the first level of 'instances' for this device
706 * (ie 'cache' might have 'cache0', 'cache1', 'cache2', etc
708 static int edac_device_create_instances(struct edac_device_ctl_info *edac_dev)
713 debugf0("%s()\n", __func__);
715 /* iterate over creation of the instances */
716 for (i = 0; i < edac_dev->nr_instances; i++) {
717 err = edac_device_create_instance(edac_dev, i);
719 /* unwind previous instances on error */
720 for (j = 0; j < i; j++)
721 edac_device_delete_instance(edac_dev, j);
730 * edac_device_delete_instances(edac_dev);
731 * unregister all the kobjects of the instances
733 static void edac_device_delete_instances(struct edac_device_ctl_info *edac_dev)
737 /* iterate over creation of the instances */
738 for (i = 0; i < edac_dev->nr_instances; i++)
739 edac_device_delete_instance(edac_dev, i);
742 /* edac_dev sysfs ctor/dtor code */
745 * edac_device_add_main_sysfs_attributes
746 * add some attributes to this instance's main kobject
748 static int edac_device_add_main_sysfs_attributes(
749 struct edac_device_ctl_info *edac_dev)
751 struct edac_dev_sysfs_attribute *sysfs_attrib;
754 sysfs_attrib = edac_dev->sysfs_attributes;
756 /* iterate over the array and create an attribute for each
759 while (sysfs_attrib->attr.name != NULL) {
760 err = sysfs_create_file(&edac_dev->kobj,
761 (struct attribute*) sysfs_attrib);
774 * edac_device_remove_main_sysfs_attributes
775 * remove any attributes to this instance's main kobject
777 static void edac_device_remove_main_sysfs_attributes(
778 struct edac_device_ctl_info *edac_dev)
780 struct edac_dev_sysfs_attribute *sysfs_attrib;
782 /* if there are main attributes, defined, remove them. First,
783 * point to the start of the array and iterate over it
784 * removing each attribute listed from this device's instance's kobject
786 sysfs_attrib = edac_dev->sysfs_attributes;
788 while (sysfs_attrib->attr.name != NULL) {
789 sysfs_remove_file(&edac_dev->kobj,
790 (struct attribute *) sysfs_attrib);
797 * edac_device_create_sysfs() Constructor
799 * accept a created edac_device control structure
800 * and 'export' it to sysfs. The 'main' kobj should already have been
801 * created. 'instance' and 'block' kobjects should be registered
802 * along with any 'block' attributes from the low driver. In addition,
803 * the main attributes (if any) are connected to the main kobject of
804 * the control structure.
810 int edac_device_create_sysfs(struct edac_device_ctl_info *edac_dev)
813 struct kobject *edac_kobj = &edac_dev->kobj;
815 debugf0("%s() idx=%d\n", __func__, edac_dev->dev_idx);
817 /* go create any main attributes callers wants */
818 err = edac_device_add_main_sysfs_attributes(edac_dev);
820 debugf0("%s() failed to add sysfs attribs\n", __func__);
824 /* create a symlink from the edac device
825 * to the platform 'device' being used for this
827 err = sysfs_create_link(edac_kobj,
828 &edac_dev->dev->kobj, EDAC_DEVICE_SYMLINK);
830 debugf0("%s() sysfs_create_link() returned err= %d\n",
832 goto err_remove_main_attribs;
835 /* Create the first level instance directories
836 * In turn, the nested blocks beneath the instances will
837 * be registered as well
839 err = edac_device_create_instances(edac_dev);
841 debugf0("%s() edac_device_create_instances() "
842 "returned err= %d\n", __func__, err);
843 goto err_remove_link;
847 debugf4("%s() create-instances done, idx=%d\n",
848 __func__, edac_dev->dev_idx);
852 /* Error unwind stack */
854 /* remove the sym link */
855 sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK);
857 err_remove_main_attribs:
858 edac_device_remove_main_sysfs_attributes(edac_dev);
865 * edac_device_remove_sysfs() destructor
867 * given an edac_device struct, tear down the kobject resources
869 void edac_device_remove_sysfs(struct edac_device_ctl_info *edac_dev)
871 debugf0("%s()\n", __func__);
873 /* remove any main attributes for this device */
874 edac_device_remove_main_sysfs_attributes(edac_dev);
876 /* remove the device sym link */
877 sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK);
879 /* walk the instance/block kobject tree, deconstructing it */
880 edac_device_delete_instances(edac_dev);