2 * edac_mc kernel module
3 * (C) 2005, 2006 Linux Networx (http://lnxi.com)
4 * This file may be distributed under the terms of the
5 * GNU General Public License.
7 * Written Doug Thompson <norsk5@xmission.com>
11 #include <linux/module.h>
12 #include <linux/sysdev.h>
13 #include <linux/ctype.h>
16 #include "edac_module.h"
18 /* MC EDAC Controls, setable by module parameter, and sysfs */
19 static int log_ue
= 1;
20 static int log_ce
= 1;
21 static int panic_on_ue
;
22 static int poll_msec
= 1000;
24 /* Getter functions for above */
35 int edac_get_panic_on_ue()
40 int edac_get_poll_msec()
45 /* Parameter declarations for above */
46 module_param(panic_on_ue
, int, 0644);
47 MODULE_PARM_DESC(panic_on_ue
, "Panic on uncorrected error: 0=off 1=on");
48 module_param(log_ue
, int, 0644);
49 MODULE_PARM_DESC(log_ue
, "Log uncorrectable error to console: 0=off 1=on");
50 module_param(log_ce
, int, 0644);
51 MODULE_PARM_DESC(log_ce
, "Log correctable error to console: 0=off 1=on");
52 module_param(poll_msec
, int, 0644);
53 MODULE_PARM_DESC(poll_msec
, "Polling period in milliseconds");
57 * various constants for Memory Controllers
59 static const char *mem_types
[] = {
60 [MEM_EMPTY
] = "Empty",
61 [MEM_RESERVED
] = "Reserved",
62 [MEM_UNKNOWN
] = "Unknown",
66 [MEM_SDR
] = "Unbuffered-SDR",
67 [MEM_RDR
] = "Registered-SDR",
68 [MEM_DDR
] = "Unbuffered-DDR",
69 [MEM_RDDR
] = "Registered-DDR",
73 static const char *dev_types
[] = {
74 [DEV_UNKNOWN
] = "Unknown",
84 static const char *edac_caps
[] = {
85 [EDAC_UNKNOWN
] = "Unknown",
87 [EDAC_RESERVED
] = "Reserved",
88 [EDAC_PARITY
] = "PARITY",
90 [EDAC_SECDED
] = "SECDED",
91 [EDAC_S2ECD2ED
] = "S2ECD2ED",
92 [EDAC_S4ECD4ED
] = "S4ECD4ED",
93 [EDAC_S8ECD8ED
] = "S8ECD8ED",
94 [EDAC_S16ECD16ED
] = "S16ECD16ED"
98 * sysfs object: /sys/devices/system/edac
99 * need to export to other files in this modules
101 struct sysdev_class edac_class
= {
102 set_kset_name("edac"),
106 * /sys/devices/system/edac/mc
108 static struct kobject edac_memctrl_kobj
;
110 /* We use these to wait for the reference counts on edac_memctrl_kobj and
111 * edac_pci_kobj to reach 0.
113 static struct completion edac_memctrl_kobj_complete
;
116 * /sys/devices/system/edac/mc;
117 * data structures and methods
119 static ssize_t
memctrl_int_show(void *ptr
, char *buffer
)
121 int *value
= (int*) ptr
;
122 return sprintf(buffer
, "%u\n", *value
);
125 static ssize_t
memctrl_int_store(void *ptr
, const char *buffer
, size_t count
)
127 int *value
= (int*) ptr
;
129 if (isdigit(*buffer
))
130 *value
= simple_strtoul(buffer
, NULL
, 0);
135 struct memctrl_dev_attribute
{
136 struct attribute attr
;
138 ssize_t (*show
)(void *,char *);
139 ssize_t (*store
)(void *, const char *, size_t);
142 /* Set of show/store abstract level functions for memory control object */
143 static ssize_t
memctrl_dev_show(struct kobject
*kobj
,
144 struct attribute
*attr
, char *buffer
)
146 struct memctrl_dev_attribute
*memctrl_dev
;
147 memctrl_dev
= (struct memctrl_dev_attribute
*)attr
;
149 if (memctrl_dev
->show
)
150 return memctrl_dev
->show(memctrl_dev
->value
, buffer
);
155 static ssize_t
memctrl_dev_store(struct kobject
*kobj
, struct attribute
*attr
,
156 const char *buffer
, size_t count
)
158 struct memctrl_dev_attribute
*memctrl_dev
;
159 memctrl_dev
= (struct memctrl_dev_attribute
*)attr
;
161 if (memctrl_dev
->store
)
162 return memctrl_dev
->store(memctrl_dev
->value
, buffer
, count
);
167 static struct sysfs_ops memctrlfs_ops
= {
168 .show
= memctrl_dev_show
,
169 .store
= memctrl_dev_store
172 #define MEMCTRL_ATTR(_name,_mode,_show,_store) \
173 static struct memctrl_dev_attribute attr_##_name = { \
174 .attr = {.name = __stringify(_name), .mode = _mode }, \
180 #define MEMCTRL_STRING_ATTR(_name,_data,_mode,_show,_store) \
181 static struct memctrl_dev_attribute attr_##_name = { \
182 .attr = {.name = __stringify(_name), .mode = _mode }, \
188 /* csrow<id> control files */
189 MEMCTRL_ATTR(panic_on_ue
,S_IRUGO
|S_IWUSR
,memctrl_int_show
,memctrl_int_store
);
190 MEMCTRL_ATTR(log_ue
,S_IRUGO
|S_IWUSR
,memctrl_int_show
,memctrl_int_store
);
191 MEMCTRL_ATTR(log_ce
,S_IRUGO
|S_IWUSR
,memctrl_int_show
,memctrl_int_store
);
192 MEMCTRL_ATTR(poll_msec
,S_IRUGO
|S_IWUSR
,memctrl_int_show
,memctrl_int_store
);
194 /* Base Attributes of the memory ECC object */
195 static struct memctrl_dev_attribute
*memctrl_attr
[] = {
203 /* Main MC kobject release() function */
204 static void edac_memctrl_master_release(struct kobject
*kobj
)
206 debugf1("%s()\n", __func__
);
207 complete(&edac_memctrl_kobj_complete
);
210 static struct kobj_type ktype_memctrl
= {
211 .release
= edac_memctrl_master_release
,
212 .sysfs_ops
= &memctrlfs_ops
,
213 .default_attrs
= (struct attribute
**) memctrl_attr
,
216 /* Initialize the main sysfs entries for edac:
217 * /sys/devices/system/edac
224 int edac_sysfs_memctrl_setup(void)
228 debugf1("%s()\n", __func__
);
230 /* create the /sys/devices/system/edac directory */
231 err
= sysdev_class_register(&edac_class
);
234 debugf1("%s() error=%d\n", __func__
, err
);
238 /* Init the MC's kobject */
239 memset(&edac_memctrl_kobj
, 0, sizeof (edac_memctrl_kobj
));
240 edac_memctrl_kobj
.parent
= &edac_class
.kset
.kobj
;
241 edac_memctrl_kobj
.ktype
= &ktype_memctrl
;
243 /* generate sysfs "..../edac/mc" */
244 err
= kobject_set_name(&edac_memctrl_kobj
,"mc");
249 /* FIXME: maybe new sysdev_create_subdir() */
250 err
= kobject_register(&edac_memctrl_kobj
);
253 debugf1("Failed to register '.../edac/mc'\n");
257 debugf1("Registered '.../edac/mc' kobject\n");
262 sysdev_class_unregister(&edac_class
);
268 * the '..../edac/mc' kobject followed by '..../edac' itself
270 void edac_sysfs_memctrl_teardown(void)
272 debugf0("MC: " __FILE__
": %s()\n", __func__
);
274 /* Unregister the MC's kobject and wait for reference count to reach 0.
276 init_completion(&edac_memctrl_kobj_complete
);
277 kobject_unregister(&edac_memctrl_kobj
);
278 wait_for_completion(&edac_memctrl_kobj_complete
);
280 /* Unregister the 'edac' object */
281 sysdev_class_unregister(&edac_class
);
285 /* EDAC sysfs CSROW data structures and methods
288 /* Set of more default csrow<id> attribute show/store functions */
289 static ssize_t
csrow_ue_count_show(struct csrow_info
*csrow
, char *data
, int private)
291 return sprintf(data
,"%u\n", csrow
->ue_count
);
294 static ssize_t
csrow_ce_count_show(struct csrow_info
*csrow
, char *data
, int private)
296 return sprintf(data
,"%u\n", csrow
->ce_count
);
299 static ssize_t
csrow_size_show(struct csrow_info
*csrow
, char *data
, int private)
301 return sprintf(data
,"%u\n", PAGES_TO_MiB(csrow
->nr_pages
));
304 static ssize_t
csrow_mem_type_show(struct csrow_info
*csrow
, char *data
, int private)
306 return sprintf(data
,"%s\n", mem_types
[csrow
->mtype
]);
309 static ssize_t
csrow_dev_type_show(struct csrow_info
*csrow
, char *data
, int private)
311 return sprintf(data
,"%s\n", dev_types
[csrow
->dtype
]);
314 static ssize_t
csrow_edac_mode_show(struct csrow_info
*csrow
, char *data
, int private)
316 return sprintf(data
,"%s\n", edac_caps
[csrow
->edac_mode
]);
319 /* show/store functions for DIMM Label attributes */
320 static ssize_t
channel_dimm_label_show(struct csrow_info
*csrow
,
321 char *data
, int channel
)
323 return snprintf(data
, EDAC_MC_LABEL_LEN
,"%s",
324 csrow
->channels
[channel
].label
);
327 static ssize_t
channel_dimm_label_store(struct csrow_info
*csrow
,
332 ssize_t max_size
= 0;
334 max_size
= min((ssize_t
)count
,(ssize_t
)EDAC_MC_LABEL_LEN
-1);
335 strncpy(csrow
->channels
[channel
].label
, data
, max_size
);
336 csrow
->channels
[channel
].label
[max_size
] = '\0';
341 /* show function for dynamic chX_ce_count attribute */
342 static ssize_t
channel_ce_count_show(struct csrow_info
*csrow
,
346 return sprintf(data
, "%u\n", csrow
->channels
[channel
].ce_count
);
349 /* csrow specific attribute structure */
350 struct csrowdev_attribute
{
351 struct attribute attr
;
352 ssize_t (*show
)(struct csrow_info
*,char *,int);
353 ssize_t (*store
)(struct csrow_info
*, const char *,size_t,int);
357 #define to_csrow(k) container_of(k, struct csrow_info, kobj)
358 #define to_csrowdev_attr(a) container_of(a, struct csrowdev_attribute, attr)
360 /* Set of show/store higher level functions for default csrow attributes */
361 static ssize_t
csrowdev_show(struct kobject
*kobj
,
362 struct attribute
*attr
,
365 struct csrow_info
*csrow
= to_csrow(kobj
);
366 struct csrowdev_attribute
*csrowdev_attr
= to_csrowdev_attr(attr
);
368 if (csrowdev_attr
->show
)
369 return csrowdev_attr
->show(csrow
,
371 csrowdev_attr
->private);
375 static ssize_t
csrowdev_store(struct kobject
*kobj
, struct attribute
*attr
,
376 const char *buffer
, size_t count
)
378 struct csrow_info
*csrow
= to_csrow(kobj
);
379 struct csrowdev_attribute
* csrowdev_attr
= to_csrowdev_attr(attr
);
381 if (csrowdev_attr
->store
)
382 return csrowdev_attr
->store(csrow
,
385 csrowdev_attr
->private);
389 static struct sysfs_ops csrowfs_ops
= {
390 .show
= csrowdev_show
,
391 .store
= csrowdev_store
394 #define CSROWDEV_ATTR(_name,_mode,_show,_store,_private) \
395 static struct csrowdev_attribute attr_##_name = { \
396 .attr = {.name = __stringify(_name), .mode = _mode }, \
399 .private = _private, \
402 /* default cwrow<id>/attribute files */
403 CSROWDEV_ATTR(size_mb
,S_IRUGO
,csrow_size_show
,NULL
,0);
404 CSROWDEV_ATTR(dev_type
,S_IRUGO
,csrow_dev_type_show
,NULL
,0);
405 CSROWDEV_ATTR(mem_type
,S_IRUGO
,csrow_mem_type_show
,NULL
,0);
406 CSROWDEV_ATTR(edac_mode
,S_IRUGO
,csrow_edac_mode_show
,NULL
,0);
407 CSROWDEV_ATTR(ue_count
,S_IRUGO
,csrow_ue_count_show
,NULL
,0);
408 CSROWDEV_ATTR(ce_count
,S_IRUGO
,csrow_ce_count_show
,NULL
,0);
410 /* default attributes of the CSROW<id> object */
411 static struct csrowdev_attribute
*default_csrow_attr
[] = {
422 /* possible dynamic channel DIMM Label attribute files */
423 CSROWDEV_ATTR(ch0_dimm_label
,S_IRUGO
|S_IWUSR
,
424 channel_dimm_label_show
,
425 channel_dimm_label_store
,
427 CSROWDEV_ATTR(ch1_dimm_label
,S_IRUGO
|S_IWUSR
,
428 channel_dimm_label_show
,
429 channel_dimm_label_store
,
431 CSROWDEV_ATTR(ch2_dimm_label
,S_IRUGO
|S_IWUSR
,
432 channel_dimm_label_show
,
433 channel_dimm_label_store
,
435 CSROWDEV_ATTR(ch3_dimm_label
,S_IRUGO
|S_IWUSR
,
436 channel_dimm_label_show
,
437 channel_dimm_label_store
,
439 CSROWDEV_ATTR(ch4_dimm_label
,S_IRUGO
|S_IWUSR
,
440 channel_dimm_label_show
,
441 channel_dimm_label_store
,
443 CSROWDEV_ATTR(ch5_dimm_label
,S_IRUGO
|S_IWUSR
,
444 channel_dimm_label_show
,
445 channel_dimm_label_store
,
448 /* Total possible dynamic DIMM Label attribute file table */
449 static struct csrowdev_attribute
*dynamic_csrow_dimm_attr
[] = {
450 &attr_ch0_dimm_label
,
451 &attr_ch1_dimm_label
,
452 &attr_ch2_dimm_label
,
453 &attr_ch3_dimm_label
,
454 &attr_ch4_dimm_label
,
458 /* possible dynamic channel ce_count attribute files */
459 CSROWDEV_ATTR(ch0_ce_count
,S_IRUGO
|S_IWUSR
,
460 channel_ce_count_show
,
463 CSROWDEV_ATTR(ch1_ce_count
,S_IRUGO
|S_IWUSR
,
464 channel_ce_count_show
,
467 CSROWDEV_ATTR(ch2_ce_count
,S_IRUGO
|S_IWUSR
,
468 channel_ce_count_show
,
471 CSROWDEV_ATTR(ch3_ce_count
,S_IRUGO
|S_IWUSR
,
472 channel_ce_count_show
,
475 CSROWDEV_ATTR(ch4_ce_count
,S_IRUGO
|S_IWUSR
,
476 channel_ce_count_show
,
479 CSROWDEV_ATTR(ch5_ce_count
,S_IRUGO
|S_IWUSR
,
480 channel_ce_count_show
,
484 /* Total possible dynamic ce_count attribute file table */
485 static struct csrowdev_attribute
*dynamic_csrow_ce_count_attr
[] = {
495 #define EDAC_NR_CHANNELS 6
497 /* Create dynamic CHANNEL files, indexed by 'chan', under specifed CSROW */
498 static int edac_create_channel_files(struct kobject
*kobj
, int chan
)
502 if (chan
>= EDAC_NR_CHANNELS
)
505 /* create the DIMM label attribute file */
506 err
= sysfs_create_file(kobj
,
507 (struct attribute
*) dynamic_csrow_dimm_attr
[chan
]);
510 /* create the CE Count attribute file */
511 err
= sysfs_create_file(kobj
,
512 (struct attribute
*) dynamic_csrow_ce_count_attr
[chan
]);
514 debugf1("%s() dimm labels and ce_count files created", __func__
);
520 /* No memory to release for this kobj */
521 static void edac_csrow_instance_release(struct kobject
*kobj
)
523 struct csrow_info
*cs
;
525 cs
= container_of(kobj
, struct csrow_info
, kobj
);
526 complete(&cs
->kobj_complete
);
529 /* the kobj_type instance for a CSROW */
530 static struct kobj_type ktype_csrow
= {
531 .release
= edac_csrow_instance_release
,
532 .sysfs_ops
= &csrowfs_ops
,
533 .default_attrs
= (struct attribute
**) default_csrow_attr
,
536 /* Create a CSROW object under specifed edac_mc_device */
537 static int edac_create_csrow_object(
538 struct kobject
*edac_mci_kobj
,
539 struct csrow_info
*csrow
,
545 memset(&csrow
->kobj
, 0, sizeof(csrow
->kobj
));
547 /* generate ..../edac/mc/mc<id>/csrow<index> */
549 csrow
->kobj
.parent
= edac_mci_kobj
;
550 csrow
->kobj
.ktype
= &ktype_csrow
;
552 /* name this instance of csrow<id> */
553 err
= kobject_set_name(&csrow
->kobj
,"csrow%d",index
);
557 /* Instanstiate the csrow object */
558 err
= kobject_register(&csrow
->kobj
);
560 /* Create the dyanmic attribute files on this csrow,
561 * namely, the DIMM labels and the channel ce_count
563 for (chan
= 0; chan
< csrow
->nr_channels
; chan
++) {
564 err
= edac_create_channel_files(&csrow
->kobj
,chan
);
574 /* default sysfs methods and data structures for the main MCI kobject */
576 static ssize_t
mci_reset_counters_store(struct mem_ctl_info
*mci
,
577 const char *data
, size_t count
)
581 mci
->ue_noinfo_count
= 0;
582 mci
->ce_noinfo_count
= 0;
586 for (row
= 0; row
< mci
->nr_csrows
; row
++) {
587 struct csrow_info
*ri
= &mci
->csrows
[row
];
592 for (chan
= 0; chan
< ri
->nr_channels
; chan
++)
593 ri
->channels
[chan
].ce_count
= 0;
596 mci
->start_time
= jiffies
;
600 /* memory scrubbing */
601 static ssize_t
mci_sdram_scrub_rate_store(struct mem_ctl_info
*mci
,
602 const char *data
, size_t count
)
606 if (mci
->set_sdram_scrub_rate
) {
608 memctrl_int_store(&bandwidth
, data
, count
);
610 if (!(*mci
->set_sdram_scrub_rate
)(mci
, &bandwidth
)) {
611 edac_printk(KERN_DEBUG
, EDAC_MC
,
612 "Scrub rate set successfully, applied: %d\n",
615 /* FIXME: error codes maybe? */
616 edac_printk(KERN_DEBUG
, EDAC_MC
,
617 "Scrub rate set FAILED, could not apply: %d\n",
621 /* FIXME: produce "not implemented" ERROR for user-side. */
622 edac_printk(KERN_WARNING
, EDAC_MC
,
623 "Memory scrubbing 'set'control is not implemented!\n");
628 static ssize_t
mci_sdram_scrub_rate_show(struct mem_ctl_info
*mci
, char *data
)
632 if (mci
->get_sdram_scrub_rate
) {
633 if (!(*mci
->get_sdram_scrub_rate
)(mci
, &bandwidth
)) {
634 edac_printk(KERN_DEBUG
, EDAC_MC
,
635 "Scrub rate successfully, fetched: %d\n",
638 /* FIXME: error codes maybe? */
639 edac_printk(KERN_DEBUG
, EDAC_MC
,
640 "Scrub rate fetch FAILED, got: %d\n",
644 /* FIXME: produce "not implemented" ERROR for user-side. */
645 edac_printk(KERN_WARNING
, EDAC_MC
,
646 "Memory scrubbing 'get' control is not implemented!\n");
648 return sprintf(data
, "%d\n", bandwidth
);
651 /* default attribute files for the MCI object */
652 static ssize_t
mci_ue_count_show(struct mem_ctl_info
*mci
, char *data
)
654 return sprintf(data
,"%d\n", mci
->ue_count
);
657 static ssize_t
mci_ce_count_show(struct mem_ctl_info
*mci
, char *data
)
659 return sprintf(data
,"%d\n", mci
->ce_count
);
662 static ssize_t
mci_ce_noinfo_show(struct mem_ctl_info
*mci
, char *data
)
664 return sprintf(data
,"%d\n", mci
->ce_noinfo_count
);
667 static ssize_t
mci_ue_noinfo_show(struct mem_ctl_info
*mci
, char *data
)
669 return sprintf(data
,"%d\n", mci
->ue_noinfo_count
);
672 static ssize_t
mci_seconds_show(struct mem_ctl_info
*mci
, char *data
)
674 return sprintf(data
,"%ld\n", (jiffies
- mci
->start_time
) / HZ
);
677 static ssize_t
mci_ctl_name_show(struct mem_ctl_info
*mci
, char *data
)
679 return sprintf(data
,"%s\n", mci
->ctl_name
);
682 static ssize_t
mci_size_mb_show(struct mem_ctl_info
*mci
, char *data
)
684 int total_pages
, csrow_idx
;
686 for (total_pages
= csrow_idx
= 0; csrow_idx
< mci
->nr_csrows
;
688 struct csrow_info
*csrow
= &mci
->csrows
[csrow_idx
];
690 if (!csrow
->nr_pages
)
693 total_pages
+= csrow
->nr_pages
;
696 return sprintf(data
,"%u\n", PAGES_TO_MiB(total_pages
));
699 struct mcidev_attribute
{
700 struct attribute attr
;
701 ssize_t (*show
)(struct mem_ctl_info
*,char *);
702 ssize_t (*store
)(struct mem_ctl_info
*, const char *,size_t);
705 #define to_mci(k) container_of(k, struct mem_ctl_info, edac_mci_kobj)
706 #define to_mcidev_attr(a) container_of(a, struct mcidev_attribute, attr)
708 /* MCI show/store functions for top most object */
709 static ssize_t
mcidev_show(struct kobject
*kobj
, struct attribute
*attr
,
712 struct mem_ctl_info
*mem_ctl_info
= to_mci(kobj
);
713 struct mcidev_attribute
* mcidev_attr
= to_mcidev_attr(attr
);
715 if (mcidev_attr
->show
)
716 return mcidev_attr
->show(mem_ctl_info
, buffer
);
721 static ssize_t
mcidev_store(struct kobject
*kobj
, struct attribute
*attr
,
722 const char *buffer
, size_t count
)
724 struct mem_ctl_info
*mem_ctl_info
= to_mci(kobj
);
725 struct mcidev_attribute
* mcidev_attr
= to_mcidev_attr(attr
);
727 if (mcidev_attr
->store
)
728 return mcidev_attr
->store(mem_ctl_info
, buffer
, count
);
733 static struct sysfs_ops mci_ops
= {
735 .store
= mcidev_store
738 #define MCIDEV_ATTR(_name,_mode,_show,_store) \
739 static struct mcidev_attribute mci_attr_##_name = { \
740 .attr = {.name = __stringify(_name), .mode = _mode }, \
745 /* default Control file */
746 MCIDEV_ATTR(reset_counters
,S_IWUSR
,NULL
,mci_reset_counters_store
);
748 /* default Attribute files */
749 MCIDEV_ATTR(mc_name
,S_IRUGO
,mci_ctl_name_show
,NULL
);
750 MCIDEV_ATTR(size_mb
,S_IRUGO
,mci_size_mb_show
,NULL
);
751 MCIDEV_ATTR(seconds_since_reset
,S_IRUGO
,mci_seconds_show
,NULL
);
752 MCIDEV_ATTR(ue_noinfo_count
,S_IRUGO
,mci_ue_noinfo_show
,NULL
);
753 MCIDEV_ATTR(ce_noinfo_count
,S_IRUGO
,mci_ce_noinfo_show
,NULL
);
754 MCIDEV_ATTR(ue_count
,S_IRUGO
,mci_ue_count_show
,NULL
);
755 MCIDEV_ATTR(ce_count
,S_IRUGO
,mci_ce_count_show
,NULL
);
757 /* memory scrubber attribute file */
758 MCIDEV_ATTR(sdram_scrub_rate
,S_IRUGO
|S_IWUSR
,mci_sdram_scrub_rate_show
,mci_sdram_scrub_rate_store
);
760 static struct mcidev_attribute
*mci_attr
[] = {
761 &mci_attr_reset_counters
,
764 &mci_attr_seconds_since_reset
,
765 &mci_attr_ue_noinfo_count
,
766 &mci_attr_ce_noinfo_count
,
769 &mci_attr_sdram_scrub_rate
,
774 * Release of a MC controlling instance
776 static void edac_mci_instance_release(struct kobject
*kobj
)
778 struct mem_ctl_info
*mci
;
781 debugf0("%s() idx=%d\n", __func__
, mci
->mc_idx
);
782 complete(&mci
->kobj_complete
);
785 static struct kobj_type ktype_mci
= {
786 .release
= edac_mci_instance_release
,
787 .sysfs_ops
= &mci_ops
,
788 .default_attrs
= (struct attribute
**) mci_attr
,
792 #define EDAC_DEVICE_SYMLINK "device"
795 * Create a new Memory Controller kobject instance,
796 * mc<id> under the 'mc' directory
802 int edac_create_sysfs_mci_device(struct mem_ctl_info
*mci
)
806 struct csrow_info
*csrow
;
807 struct kobject
*edac_mci_kobj
=&mci
->edac_mci_kobj
;
809 debugf0("%s() idx=%d\n", __func__
, mci
->mc_idx
);
810 memset(edac_mci_kobj
, 0, sizeof(*edac_mci_kobj
));
812 /* set the name of the mc<id> object */
813 err
= kobject_set_name(edac_mci_kobj
,"mc%d",mci
->mc_idx
);
817 /* link to our parent the '..../edac/mc' object */
818 edac_mci_kobj
->parent
= &edac_memctrl_kobj
;
819 edac_mci_kobj
->ktype
= &ktype_mci
;
821 /* register the mc<id> kobject */
822 err
= kobject_register(edac_mci_kobj
);
826 /* create a symlink for the device */
827 err
= sysfs_create_link(edac_mci_kobj
, &mci
->dev
->kobj
,
828 EDAC_DEVICE_SYMLINK
);
832 /* Make directories for each CSROW object
833 * under the mc<id> kobject
835 for (i
= 0; i
< mci
->nr_csrows
; i
++) {
836 csrow
= &mci
->csrows
[i
];
838 /* Only expose populated CSROWs */
839 if (csrow
->nr_pages
> 0) {
840 err
= edac_create_csrow_object(edac_mci_kobj
,csrow
,i
);
848 /* CSROW error: backout what has already been registered, */
850 for ( i
--; i
>= 0; i
--) {
851 if (csrow
->nr_pages
> 0) {
852 init_completion(&csrow
->kobj_complete
);
853 kobject_unregister(&mci
->csrows
[i
].kobj
);
854 wait_for_completion(&csrow
->kobj_complete
);
859 init_completion(&mci
->kobj_complete
);
860 kobject_unregister(edac_mci_kobj
);
861 wait_for_completion(&mci
->kobj_complete
);
866 * remove a Memory Controller instance
868 void edac_remove_sysfs_mci_device(struct mem_ctl_info
*mci
)
872 debugf0("%s()\n", __func__
);
874 /* remove all csrow kobjects */
875 for (i
= 0; i
< mci
->nr_csrows
; i
++) {
876 if (mci
->csrows
[i
].nr_pages
> 0) {
877 init_completion(&mci
->csrows
[i
].kobj_complete
);
878 kobject_unregister(&mci
->csrows
[i
].kobj
);
879 wait_for_completion(&mci
->csrows
[i
].kobj_complete
);
883 sysfs_remove_link(&mci
->edac_mci_kobj
, EDAC_DEVICE_SYMLINK
);
884 init_completion(&mci
->kobj_complete
);
885 kobject_unregister(&mci
->edac_mci_kobj
);
886 wait_for_completion(&mci
->kobj_complete
);