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-rw-r--r--drivers/edac/Makefile4
-rw-r--r--drivers/edac/edac_core.h252
-rw-r--r--drivers/edac/edac_device.c669
-rw-r--r--drivers/edac/edac_device_sysfs.c837
-rw-r--r--drivers/edac/edac_mc.c8
-rw-r--r--drivers/edac/edac_mc_sysfs.c70
-rw-r--r--drivers/edac/edac_module.c147
-rw-r--r--drivers/edac/edac_module.h9
8 files changed, 1936 insertions, 60 deletions
diff --git a/drivers/edac/Makefile b/drivers/edac/Makefile
index 51f59aa84d30..1c67cc809218 100644
--- a/drivers/edac/Makefile
+++ b/drivers/edac/Makefile
@@ -10,9 +10,9 @@
10 10
11obj-$(CONFIG_EDAC_MM_EDAC) += edac_core.o 11obj-$(CONFIG_EDAC_MM_EDAC) += edac_core.o
12 12
13edac_core-objs := edac_mc.o edac_mc_sysfs.o edac_pci_sysfs.o 13edac_core-objs := edac_mc.o edac_device.o edac_mc_sysfs.o edac_pci_sysfs.o
14 14
15edac_core-objs += edac_module.o 15edac_core-objs += edac_module.o edac_device_sysfs.o
16 16
17obj-$(CONFIG_EDAC_AMD76X) += amd76x_edac.o 17obj-$(CONFIG_EDAC_AMD76X) += amd76x_edac.o
18obj-$(CONFIG_EDAC_E7XXX) += e7xxx_edac.o 18obj-$(CONFIG_EDAC_E7XXX) += e7xxx_edac.o
diff --git a/drivers/edac/edac_core.h b/drivers/edac/edac_core.h
index 397f144791ec..a3e4b97fe4fe 100644
--- a/drivers/edac/edac_core.h
+++ b/drivers/edac/edac_core.h
@@ -32,9 +32,14 @@
32#include <linux/completion.h> 32#include <linux/completion.h>
33#include <linux/kobject.h> 33#include <linux/kobject.h>
34#include <linux/platform_device.h> 34#include <linux/platform_device.h>
35#include <linux/sysdev.h>
36#include <linux/workqueue.h>
37#include <linux/version.h>
35 38
36#define EDAC_MC_LABEL_LEN 31 39#define EDAC_MC_LABEL_LEN 31
37#define MC_PROC_NAME_MAX_LEN 7 40#define EDAC_DEVICE_NAME_LEN 31
41#define EDAC_ATTRIB_VALUE_LEN 15
42#define MC_PROC_NAME_MAX_LEN 7
38 43
39#if PAGE_SHIFT < 20 44#if PAGE_SHIFT < 20
40#define PAGES_TO_MiB( pages ) ( ( pages ) >> ( 20 - PAGE_SHIFT ) ) 45#define PAGES_TO_MiB( pages ) ( ( pages ) >> ( 20 - PAGE_SHIFT ) )
@@ -51,6 +56,10 @@
51#define edac_mc_chipset_printk(mci, level, prefix, fmt, arg...) \ 56#define edac_mc_chipset_printk(mci, level, prefix, fmt, arg...) \
52 printk(level "EDAC " prefix " MC%d: " fmt, mci->mc_idx, ##arg) 57 printk(level "EDAC " prefix " MC%d: " fmt, mci->mc_idx, ##arg)
53 58
59/* edac_device printk */
60#define edac_device_printk(ctl, level, fmt, arg...) \
61 printk(level "EDAC DEVICE%d: " fmt, ctl->dev_idx, ##arg)
62
54/* prefixes for edac_printk() and edac_mc_printk() */ 63/* prefixes for edac_printk() and edac_mc_printk() */
55#define EDAC_MC "MC" 64#define EDAC_MC "MC"
56#define EDAC_PCI "PCI" 65#define EDAC_PCI "PCI"
@@ -62,7 +71,7 @@ extern int edac_debug_level;
62#define edac_debug_printk(level, fmt, arg...) \ 71#define edac_debug_printk(level, fmt, arg...) \
63 do { \ 72 do { \
64 if (level <= edac_debug_level) \ 73 if (level <= edac_debug_level) \
65 edac_printk(KERN_DEBUG, EDAC_DEBUG, fmt, ##arg); \ 74 edac_printk(KERN_EMERG, EDAC_DEBUG, fmt, ##arg); \
66 } while(0) 75 } while(0)
67 76
68#define debugf0( ... ) edac_debug_printk(0, __VA_ARGS__ ) 77#define debugf0( ... ) edac_debug_printk(0, __VA_ARGS__ )
@@ -195,6 +204,8 @@ enum scrub_type {
195 204
196/* FIXME - should have notify capabilities: NMI, LOG, PROC, etc */ 205/* FIXME - should have notify capabilities: NMI, LOG, PROC, etc */
197 206
207extern char * edac_align_ptr(void *ptr, unsigned size);
208
198/* 209/*
199 * There are several things to be aware of that aren't at all obvious: 210 * There are several things to be aware of that aren't at all obvious:
200 * 211 *
@@ -376,6 +387,231 @@ struct mem_ctl_info {
376 struct completion kobj_complete; 387 struct completion kobj_complete;
377}; 388};
378 389
390/*
391 * The following are the structures to provide for a generice
392 * or abstract 'edac_device'. This set of structures and the
393 * code that implements the APIs for the same, provide for
394 * registering EDAC type devices which are NOT standard memory.
395 *
396 * CPU caches (L1 and L2)
397 * DMA engines
398 * Core CPU swithces
399 * Fabric switch units
400 * PCIe interface controllers
401 * other EDAC/ECC type devices that can be monitored for
402 * errors, etc.
403 *
404 * It allows for a 2 level set of hiearchry. For example:
405 *
406 * cache could be composed of L1, L2 and L3 levels of cache.
407 * Each CPU core would have its own L1 cache, while sharing
408 * L2 and maybe L3 caches.
409 *
410 * View them arranged, via the sysfs presentation:
411 * /sys/devices/system/edac/..
412 *
413 * mc/ <existing memory device directory>
414 * cpu/cpu0/.. <L1 and L2 block directory>
415 * /L1-cache/ce_count
416 * /ue_count
417 * /L2-cache/ce_count
418 * /ue_count
419 * cpu/cpu1/.. <L1 and L2 block directory>
420 * /L1-cache/ce_count
421 * /ue_count
422 * /L2-cache/ce_count
423 * /ue_count
424 * ...
425 *
426 * the L1 and L2 directories would be "edac_device_block's"
427 */
428
429struct edac_device_counter {
430 u32 ue_count;
431 u32 ce_count;
432};
433
434#define INC_COUNTER(cnt) (cnt++)
435
436/*
437 * An array of these is passed to the alloc() function
438 * to specify attributes of the edac_block
439 */
440struct edac_attrib_spec {
441 char name[EDAC_DEVICE_NAME_LEN + 1];
442
443 int type;
444#define EDAC_ATTR_INT 0x01
445#define EDAC_ATTR_CHAR 0x02
446};
447
448
449/* Attribute control structure
450 * In this structure is a pointer to the driver's edac_attrib_spec
451 * The life of this pointer is inclusive in the life of the driver's
452 * life cycle.
453 */
454struct edac_attrib {
455 struct edac_device_block *block; /* Up Pointer */
456
457 struct edac_attrib_spec *spec; /* ptr to module spec entry */
458
459 union { /* actual value */
460 int edac_attrib_int_value;
461 char edac_attrib_char_value[EDAC_ATTRIB_VALUE_LEN + 1];
462 } edac_attrib_value;
463};
464
465/* device block control structure */
466struct edac_device_block {
467 struct edac_device_instance *instance; /* Up Pointer */
468 char name[EDAC_DEVICE_NAME_LEN + 1];
469
470 struct edac_device_counter counters; /* basic UE and CE counters */
471
472 int nr_attribs; /* how many attributes */
473 struct edac_attrib *attribs; /* this block's attributes */
474
475 /* edac sysfs device control */
476 struct kobject kobj;
477 struct completion kobj_complete;
478};
479
480/* device instance control structure */
481struct edac_device_instance {
482 struct edac_device_ctl_info *ctl; /* Up pointer */
483 char name[EDAC_DEVICE_NAME_LEN + 4];
484
485 struct edac_device_counter counters; /* instance counters */
486
487 u32 nr_blocks; /* how many blocks */
488 struct edac_device_block *blocks; /* block array */
489
490 /* edac sysfs device control */
491 struct kobject kobj;
492 struct completion kobj_complete;
493};
494
495
496/*
497 * Abstract edac_device control info structure
498 *
499 */
500struct edac_device_ctl_info {
501 /* for global list of edac_device_ctl_info structs */
502 struct list_head link;
503
504 int dev_idx;
505
506 /* Per instance controls for this edac_device */
507 int log_ue; /* boolean for logging UEs */
508 int log_ce; /* boolean for logging CEs */
509 int panic_on_ue; /* boolean for panic'ing on an UE */
510 unsigned poll_msec; /* number of milliseconds to poll interval */
511 unsigned long delay; /* number of jiffies for poll_msec */
512
513 struct sysdev_class *edac_class; /* pointer to class */
514
515 /* the internal state of this controller instance */
516 int op_state;
517#define OP_ALLOC 0x100
518#define OP_RUNNING_POLL 0x201
519#define OP_RUNNING_INTERRUPT 0x202
520#define OP_RUNNING_POLL_INTR 0x203
521#define OP_OFFLINE 0x300
522
523 /* work struct for this instance */
524#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20))
525 struct delayed_work work;
526#else
527 struct work_struct work;
528#endif
529
530 /* pointer to edac polling checking routine:
531 * If NOT NULL: points to polling check routine
532 * If NULL: Then assumes INTERRUPT operation, where
533 * MC driver will receive events
534 */
535 void (*edac_check) (struct edac_device_ctl_info * edac_dev);
536
537 struct device *dev; /* pointer to device structure */
538
539 const char *mod_name; /* module name */
540 const char *ctl_name; /* edac controller name */
541
542 void *pvt_info; /* pointer to 'private driver' info */
543
544 unsigned long start_time;/* edac_device load start time (jiffies)*/
545
546 /* these are for safe removal of mc devices from global list while
547 * NMI handlers may be traversing list
548 */
549 struct rcu_head rcu;
550 struct completion complete;
551
552 /* sysfs top name under 'edac' directory
553 * and instance name:
554 * cpu/cpu0/...
555 * cpu/cpu1/...
556 * cpu/cpu2/...
557 * ...
558 */
559 char name[EDAC_DEVICE_NAME_LEN + 1];
560
561 /* Number of instances supported on this control structure
562 * and the array of those instances
563 */
564 u32 nr_instances;
565 struct edac_device_instance *instances;
566
567 /* Event counters for the this whole EDAC Device */
568 struct edac_device_counter counters;
569
570 /* edac sysfs device control for the 'name'
571 * device this structure controls
572 */
573 struct kobject kobj;
574 struct completion kobj_complete;
575};
576
577/* To get from the instance's wq to the beginning of the ctl structure */
578#define to_edac_device_ctl_work(w) \
579 container_of(w,struct edac_device_ctl_info,work)
580
581/* Function to calc the number of delay jiffies from poll_msec */
582static inline void edac_device_calc_delay(
583 struct edac_device_ctl_info *edac_dev)
584{
585 /* convert from msec to jiffies */
586 edac_dev->delay = edac_dev->poll_msec * HZ / 1000;
587}
588
589/*
590 * The alloc() and free() functions for the 'edac_device' control info
591 * structure. A MC driver will allocate one of these for each edac_device
592 * it is going to control/register with the EDAC CORE.
593 */
594extern struct edac_device_ctl_info *edac_device_alloc_ctl_info(
595 unsigned sizeof_private,
596 char *edac_device_name,
597 unsigned nr_instances,
598 char *edac_block_name,
599 unsigned nr_blocks,
600 unsigned offset_value,
601 struct edac_attrib_spec *attrib_spec,
602 unsigned nr_attribs
603);
604
605/* The offset value can be:
606 * -1 indicating no offset value
607 * 0 for zero-based block numbers
608 * 1 for 1-based block number
609 * other for other-based block number
610 */
611#define BLOCK_OFFSET_VALUE_OFF ((unsigned) -1)
612
613extern void edac_device_free_ctl_info( struct edac_device_ctl_info *ctl_info);
614
379#ifdef CONFIG_PCI 615#ifdef CONFIG_PCI
380 616
381/* write all or some bits in a byte-register*/ 617/* write all or some bits in a byte-register*/
@@ -466,13 +702,17 @@ extern void edac_mc_handle_fbd_ce(struct mem_ctl_info *mci,
466 char *msg); 702 char *msg);
467 703
468/* 704/*
469 * This kmalloc's and initializes all the structures. 705 * edac_device APIs
470 * Can't be used if all structures don't have the same lifetime.
471 */ 706 */
472extern struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows, 707extern struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows,
473 unsigned nr_chans); 708 unsigned nr_chans);
474
475/* Free an mc previously allocated by edac_mc_alloc() */
476extern void edac_mc_free(struct mem_ctl_info *mci); 709extern void edac_mc_free(struct mem_ctl_info *mci);
710extern int edac_device_add_device(struct edac_device_ctl_info *edac_dev, int edac_idx);
711extern struct edac_device_ctl_info * edac_device_del_device(struct device *dev);
712extern void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev,
713 int inst_nr, int block_nr, const char *msg);
714extern void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
715 int inst_nr, int block_nr, const char *msg);
716
477 717
478#endif /* _EDAC_CORE_H_ */ 718#endif /* _EDAC_CORE_H_ */
diff --git a/drivers/edac/edac_device.c b/drivers/edac/edac_device.c
new file mode 100644
index 000000000000..c579c498cc75
--- /dev/null
+++ b/drivers/edac/edac_device.c
@@ -0,0 +1,669 @@
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 */
35static DECLARE_MUTEX(device_ctls_mutex);
36static struct list_head edac_device_list = LIST_HEAD_INIT(edac_device_list);
37
38
39static inline void lock_device_list(void)
40{
41 down(&device_ctls_mutex);
42}
43
44static inline void unlock_device_list(void)
45{
46 up(&device_ctls_mutex);
47}
48
49
50#ifdef CONFIG_EDAC_DEBUG
51static void edac_device_dump_device(struct edac_device_ctl_info *edac_dev)
52{
53 debugf3("\tedac_dev = %p dev_idx=%d \n", edac_dev,edac_dev->dev_idx);
54 debugf4("\tedac_dev->edac_check = %p\n", edac_dev->edac_check);
55 debugf3("\tdev = %p\n", edac_dev->dev);
56 debugf3("\tmod_name:ctl_name = %s:%s\n",
57 edac_dev->mod_name, edac_dev->ctl_name);
58 debugf3("\tpvt_info = %p\n\n", edac_dev->pvt_info);
59}
60#endif /* CONFIG_EDAC_DEBUG */
61
62/*
63 * The alloc() and free() functions for the 'edac_device' control info
64 * structure. A MC driver will allocate one of these for each edac_device
65 * it is going to control/register with the EDAC CORE.
66 */
67struct edac_device_ctl_info *edac_device_alloc_ctl_info(
68 unsigned sz_private,
69 char *edac_device_name,
70 unsigned nr_instances,
71 char *edac_block_name,
72 unsigned nr_blocks,
73 unsigned offset_value,
74 struct edac_attrib_spec *attrib_spec,
75 unsigned nr_attribs)
76{
77 struct edac_device_ctl_info *dev_ctl;
78 struct edac_device_instance *dev_inst, *inst;
79 struct edac_device_block *dev_blk, *blk_p, *blk;
80 struct edac_attrib *dev_attrib, *attrib_p, *attrib;
81 unsigned total_size;
82 unsigned count;
83 unsigned instance, block, attr;
84 void *pvt;
85
86 debugf1("%s() instances=%d blocks=%d\n",
87 __func__,nr_instances,nr_blocks);
88
89 /* Figure out the offsets of the various items from the start of an
90 * ctl_info structure. We want the alignment of each item
91 * to be at least as stringent as what the compiler would
92 * provide if we could simply hardcode everything into a single struct.
93 */
94 dev_ctl = (struct edac_device_ctl_info *) 0;
95
96 /* Calc the 'end' offset past the ctl_info structure */
97 dev_inst = (struct edac_device_instance *)
98 edac_align_ptr(&dev_ctl[1],sizeof(*dev_inst));
99
100 /* Calc the 'end' offset past the instance array */
101 dev_blk = (struct edac_device_block *)
102 edac_align_ptr(&dev_inst[nr_instances],sizeof(*dev_blk));
103
104 /* Calc the 'end' offset past the dev_blk array */
105 count = nr_instances * nr_blocks;
106 dev_attrib = (struct edac_attrib *)
107 edac_align_ptr(&dev_blk[count],sizeof(*dev_attrib));
108
109 /* Check for case of NO attributes specified */
110 if (nr_attribs > 0)
111 count *= nr_attribs;
112
113 /* Calc the 'end' offset past the attributes array */
114 pvt = edac_align_ptr(&dev_attrib[count],sz_private);
115 total_size = ((unsigned long) pvt) + sz_private;
116
117 /* Allocate the amount of memory for the set of control structures */
118 if ((dev_ctl = kmalloc(total_size, GFP_KERNEL)) == NULL)
119 return NULL;
120
121 /* Adjust pointers so they point within the memory we just allocated
122 * rather than an imaginary chunk of memory located at address 0.
123 */
124 dev_inst = (struct edac_device_instance *)
125 (((char *) dev_ctl) + ((unsigned long) dev_inst));
126 dev_blk = (struct edac_device_block *)
127 (((char *) dev_ctl) + ((unsigned long) dev_blk));
128 dev_attrib = (struct edac_attrib *)
129 (((char *) dev_ctl) + ((unsigned long) dev_attrib));
130 pvt = sz_private ?
131 (((char *) dev_ctl) + ((unsigned long) pvt)) : NULL;
132
133 memset(dev_ctl, 0, total_size); /* clear all fields */
134 dev_ctl->nr_instances = nr_instances;
135 dev_ctl->instances = dev_inst;
136 dev_ctl->pvt_info = pvt;
137
138 /* Name of this edac device, ensure null terminated */
139 snprintf(dev_ctl->name,sizeof(dev_ctl->name),"%s", edac_device_name);
140 dev_ctl->name[sizeof(dev_ctl->name)-1] = '\0';
141
142 /* Initialize every Instance */
143 for (instance = 0; instance < nr_instances; instance++) {
144 inst = &dev_inst[instance];
145 inst->ctl = dev_ctl;
146 inst->nr_blocks = nr_blocks;
147 blk_p = &dev_blk[instance * nr_blocks];
148 inst->blocks = blk_p;
149
150 /* name of this instance */
151 snprintf(inst->name, sizeof(inst->name),
152 "%s%u", edac_device_name, instance);
153 inst->name[sizeof(inst->name)-1] = '\0';
154
155 /* Initialize every block in each instance */
156 for ( block = 0;
157 block < nr_blocks;
158 block++) {
159 blk = &blk_p[block];
160 blk->instance = inst;
161 blk->nr_attribs = nr_attribs;
162 attrib_p = &dev_attrib[block * nr_attribs];
163 blk->attribs = attrib_p;
164 snprintf(blk->name, sizeof(blk->name),
165 "%s%d", edac_block_name,block+1);
166 blk->name[sizeof(blk->name)-1] = '\0';
167
168 debugf1("%s() instance=%d block=%d name=%s\n",
169 __func__, instance,block,blk->name);
170
171 if (attrib_spec != NULL) {
172 /* when there is an attrib_spec passed int then
173 * Initialize every attrib of each block
174 */
175 for (attr = 0; attr < nr_attribs; attr++) {
176 attrib = &attrib_p[attr];
177 attrib->block = blk;
178
179 /* Link each attribute to the caller's
180 * spec entry, for name and type
181 */
182 attrib->spec = &attrib_spec[attr];
183 }
184 }
185 }
186 }
187
188 /* Mark this instance as merely ALLOCATED */
189 dev_ctl->op_state = OP_ALLOC;
190
191 return dev_ctl;
192}
193EXPORT_SYMBOL_GPL(edac_device_alloc_ctl_info);
194
195/*
196 * edac_device_free_ctl_info()
197 * frees the memory allocated by the edac_device_alloc_ctl_info()
198 * function
199 */
200void edac_device_free_ctl_info( struct edac_device_ctl_info *ctl_info) {
201 kfree(ctl_info);
202}
203EXPORT_SYMBOL_GPL(edac_device_free_ctl_info);
204
205
206
207/*
208 * find_edac_device_by_dev
209 * scans the edac_device list for a specific 'struct device *'
210 */
211static struct edac_device_ctl_info *
212find_edac_device_by_dev(struct device *dev)
213{
214 struct edac_device_ctl_info *edac_dev;
215 struct list_head *item;
216
217 debugf3("%s()\n", __func__);
218
219 list_for_each(item, &edac_device_list) {
220 edac_dev = list_entry(item, struct edac_device_ctl_info, link);
221
222 if (edac_dev->dev == dev)
223 return edac_dev;
224 }
225
226 return NULL;
227}
228
229/*
230 * add_edac_dev_to_global_list
231 * Before calling this function, caller must
232 * assign a unique value to edac_dev->dev_idx.
233 * Return:
234 * 0 on success
235 * 1 on failure.
236 */
237static int add_edac_dev_to_global_list (struct edac_device_ctl_info *edac_dev)
238{
239 struct list_head *item, *insert_before;
240 struct edac_device_ctl_info *rover;
241
242 insert_before = &edac_device_list;
243
244 /* Determine if already on the list */
245 if (unlikely((rover = find_edac_device_by_dev(edac_dev->dev)) != NULL))
246 goto fail0;
247
248 /* Insert in ascending order by 'dev_idx', so find position */
249 list_for_each(item, &edac_device_list) {
250 rover = list_entry(item, struct edac_device_ctl_info, link);
251
252 if (rover->dev_idx >= edac_dev->dev_idx) {
253 if (unlikely(rover->dev_idx == edac_dev->dev_idx))
254 goto fail1;
255
256 insert_before = item;
257 break;
258 }
259 }
260
261 list_add_tail_rcu(&edac_dev->link, insert_before);
262 return 0;
263
264fail0:
265 edac_printk(KERN_WARNING, EDAC_MC,
266 "%s (%s) %s %s already assigned %d\n",
267 rover->dev->bus_id, dev_name(rover->dev),
268 rover->mod_name, rover->ctl_name, rover->dev_idx);
269 return 1;
270
271fail1:
272 edac_printk(KERN_WARNING, EDAC_MC,
273 "bug in low-level driver: attempt to assign\n"
274 " duplicate dev_idx %d in %s()\n", rover->dev_idx, __func__);
275 return 1;
276}
277
278/*
279 * complete_edac_device_list_del
280 */
281static void complete_edac_device_list_del(struct rcu_head *head)
282{
283 struct edac_device_ctl_info *edac_dev;
284
285 edac_dev = container_of(head, struct edac_device_ctl_info, rcu);
286 INIT_LIST_HEAD(&edac_dev->link);
287 complete(&edac_dev->complete);
288}
289
290/*
291 * del_edac_device_from_global_list
292 */
293static void del_edac_device_from_global_list(
294 struct edac_device_ctl_info *edac_device)
295{
296 list_del_rcu(&edac_device->link);
297 init_completion(&edac_device->complete);
298 call_rcu(&edac_device->rcu, complete_edac_device_list_del);
299 wait_for_completion(&edac_device->complete);
300}
301
302/**
303 * edac_device_find
304 * Search for a edac_device_ctl_info structure whose index is 'idx'.
305 *
306 * If found, return a pointer to the structure.
307 * Else return NULL.
308 *
309 * Caller must hold device_ctls_mutex.
310 */
311struct edac_device_ctl_info * edac_device_find(int idx)
312{
313 struct list_head *item;
314 struct edac_device_ctl_info *edac_dev;
315
316 /* Iterate over list, looking for exact match of ID */
317 list_for_each(item, &edac_device_list) {
318 edac_dev = list_entry(item, struct edac_device_ctl_info, link);
319
320 if (edac_dev->dev_idx >= idx) {
321 if (edac_dev->dev_idx == idx)
322 return edac_dev;
323
324 /* not on list, so terminate early */
325 break;
326 }
327 }
328
329 return NULL;
330}
331EXPORT_SYMBOL(edac_device_find);
332
333
334/*
335 * edac_workq_function
336 * performs the operation scheduled by a workq request
337 */
338#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20))
339static void edac_workq_function(struct work_struct *work_req)
340{
341 struct delayed_work *d_work = (struct delayed_work*) work_req;
342 struct edac_device_ctl_info *edac_dev =
343 to_edac_device_ctl_work(d_work);
344#else
345static void edac_workq_function(void *ptr)
346{
347 struct edac_device_ctl_info *edac_dev =
348 (struct edac_device_ctl_info *) ptr;
349#endif
350
351 //debugf0("%s() here and running\n", __func__);
352 lock_device_list();
353
354 /* Only poll controllers that are running polled and have a check */
355 if ((edac_dev->op_state == OP_RUNNING_POLL) &&
356 (edac_dev->edac_check != NULL)) {
357 edac_dev->edac_check(edac_dev);
358 }
359
360 unlock_device_list();
361
362 /* Reschedule */
363 queue_delayed_work(edac_workqueue,&edac_dev->work, edac_dev->delay);
364}
365
366/*
367 * edac_workq_setup
368 * initialize a workq item for this edac_device instance
369 * passing in the new delay period in msec
370 */
371void edac_workq_setup(struct edac_device_ctl_info *edac_dev, unsigned msec)
372{
373 debugf0("%s()\n", __func__);
374
375 edac_dev->poll_msec = msec;
376 edac_device_calc_delay(edac_dev); /* Calc delay jiffies */
377
378#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20))
379 INIT_DELAYED_WORK(&edac_dev->work,edac_workq_function);
380#else
381 INIT_WORK(&edac_dev->work,edac_workq_function,edac_dev);
382#endif
383 queue_delayed_work(edac_workqueue,&edac_dev->work, edac_dev->delay);
384}
385
386/*
387 * edac_workq_teardown
388 * stop the workq processing on this edac_dev
389 */
390void edac_workq_teardown(struct edac_device_ctl_info *edac_dev)
391{
392 int status;
393
394 status = cancel_delayed_work(&edac_dev->work);
395 if (status == 0) {
396 /* workq instance might be running, wait for it */
397 flush_workqueue(edac_workqueue);
398 }
399}
400
401/*
402 * edac_device_reset_delay_period
403 */
404
405void edac_device_reset_delay_period(
406 struct edac_device_ctl_info *edac_dev,
407 unsigned long value)
408{
409 lock_device_list();
410
411 /* cancel the current workq request */
412 edac_workq_teardown(edac_dev);
413
414 /* restart the workq request, with new delay value */
415 edac_workq_setup(edac_dev, value);
416
417 unlock_device_list();
418}
419
420/*
421 * edac_op_state_toString(edac_dev)
422 */
423static char *edac_op_state_toString(struct edac_device_ctl_info *edac_dev)
424{
425 int opstate = edac_dev->op_state;
426
427 if (opstate == OP_RUNNING_POLL)
428 return "POLLED";
429 else if (opstate == OP_RUNNING_INTERRUPT)
430 return "INTERRUPT";
431 else if (opstate == OP_RUNNING_POLL_INTR)
432 return "POLL-INTR";
433 else if (opstate == OP_ALLOC)
434 return "ALLOC";
435 else if (opstate == OP_OFFLINE)
436 return "OFFLINE";
437
438 return "UNKNOWN";
439}
440
441/**
442 * edac_device_add_device: Insert the 'edac_dev' structure into the
443 * edac_device global list and create sysfs entries associated with
444 * edac_device structure.
445 * @edac_device: pointer to the edac_device structure to be added to the list
446 * @edac_idx: A unique numeric identifier to be assigned to the
447 * 'edac_device' structure.
448 *
449 * Return:
450 * 0 Success
451 * !0 Failure
452 */
453int edac_device_add_device(struct edac_device_ctl_info *edac_dev, int edac_idx)
454{
455 debugf0("%s()\n", __func__);
456
457 edac_dev->dev_idx = edac_idx;
458#ifdef CONFIG_EDAC_DEBUG
459 if (edac_debug_level >= 3)
460 edac_device_dump_device(edac_dev);
461#endif
462 lock_device_list();
463
464 if (add_edac_dev_to_global_list(edac_dev))
465 goto fail0;
466
467 /* set load time so that error rate can be tracked */
468 edac_dev->start_time = jiffies;
469
470 /* create this instance's sysfs entries */
471 if (edac_device_create_sysfs(edac_dev)) {
472 edac_device_printk(edac_dev, KERN_WARNING,
473 "failed to create sysfs device\n");
474 goto fail1;
475 }
476
477 /* If there IS a check routine, then we are running POLLED */
478 if (edac_dev->edac_check != NULL) {
479 /* This instance is NOW RUNNING */
480 edac_dev->op_state = OP_RUNNING_POLL;
481
482 /* enable workq processing on this instance, default = 1000 msec */
483 edac_workq_setup(edac_dev, 1000);
484 } else {
485 edac_dev->op_state = OP_RUNNING_INTERRUPT;
486 }
487
488
489 /* Report action taken */
490 edac_device_printk(edac_dev, KERN_INFO,
491 "Giving out device to module '%s' controller '%s': DEV '%s' (%s)\n",
492 edac_dev->mod_name,
493 edac_dev->ctl_name,
494 dev_name(edac_dev->dev),
495 edac_op_state_toString(edac_dev)
496 );
497
498 unlock_device_list();
499 return 0;
500
501fail1:
502 /* Some error, so remove the entry from the lsit */
503 del_edac_device_from_global_list(edac_dev);
504
505fail0:
506 unlock_device_list();
507 return 1;
508}
509EXPORT_SYMBOL_GPL(edac_device_add_device);
510
511/**
512 * edac_device_del_device:
513 * Remove sysfs entries for specified edac_device structure and
514 * then remove edac_device structure from global list
515 *
516 * @pdev:
517 * Pointer to 'struct device' representing edac_device
518 * structure to remove.
519 *
520 * Return:
521 * Pointer to removed edac_device structure,
522 * OR NULL if device not found.
523 */
524struct edac_device_ctl_info * edac_device_del_device(struct device *dev)
525{
526 struct edac_device_ctl_info *edac_dev;
527
528 debugf0("MC: %s()\n", __func__);
529
530 lock_device_list();
531
532 if ((edac_dev = find_edac_device_by_dev(dev)) == NULL) {
533 unlock_device_list();
534 return NULL;
535 }
536
537 /* mark this instance as OFFLINE */
538 edac_dev->op_state = OP_OFFLINE;
539
540 /* clear workq processing on this instance */
541 edac_workq_teardown(edac_dev);
542
543 /* Tear down the sysfs entries for this instance */
544 edac_device_remove_sysfs(edac_dev);
545
546 /* deregister from global list */
547 del_edac_device_from_global_list(edac_dev);
548
549 unlock_device_list();
550
551 edac_printk(KERN_INFO, EDAC_MC,
552 "Removed device %d for %s %s: DEV %s\n",
553 edac_dev->dev_idx,
554 edac_dev->mod_name,
555 edac_dev->ctl_name,
556 dev_name(edac_dev->dev));
557
558 return edac_dev;
559}
560EXPORT_SYMBOL_GPL(edac_device_del_device);
561
562
563static inline int edac_device_get_log_ce(struct edac_device_ctl_info *edac_dev)
564{
565 return edac_dev->log_ce;
566}
567
568static inline int edac_device_get_log_ue(struct edac_device_ctl_info *edac_dev)
569{
570 return edac_dev->log_ue;
571}
572
573static inline int edac_device_get_panic_on_ue(
574 struct edac_device_ctl_info *edac_dev)
575{
576 return edac_dev->panic_on_ue;
577}
578
579/*
580 * edac_device_handle_ce
581 * perform a common output and handling of an 'edac_dev' CE event
582 */
583void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
584 int inst_nr, int block_nr, const char *msg)
585{
586 struct edac_device_instance *instance;
587 struct edac_device_block *block = NULL;
588
589 if ((inst_nr >= edac_dev->nr_instances) || (inst_nr < 0)) {
590 edac_device_printk(edac_dev, KERN_ERR,
591 "INTERNAL ERROR: 'instance' out of range "
592 "(%d >= %d)\n", inst_nr, edac_dev->nr_instances);
593 return;
594 }
595
596 instance = edac_dev->instances + inst_nr;
597
598 if ((block_nr >= instance->nr_blocks) || (block_nr < 0)) {
599 edac_device_printk(edac_dev, KERN_ERR,
600 "INTERNAL ERROR: instance %d 'block' out of range "
601 "(%d >= %d)\n", inst_nr, block_nr, instance->nr_blocks);
602 return;
603 }
604
605 if (instance->nr_blocks > 0) {
606 block = instance->blocks + block_nr;
607 block->counters.ce_count++;
608 }
609
610 /* Propogate the count up the 'totals' tree */
611 instance->counters.ce_count++;
612 edac_dev->counters.ce_count++;
613
614 if (edac_device_get_log_ce(edac_dev))
615 edac_device_printk(edac_dev, KERN_WARNING,
616 "CE ctl: %s, instance: %s, block: %s: %s\n",
617 edac_dev->ctl_name, instance->name,
618 block ? block->name : "N/A", msg);
619}
620EXPORT_SYMBOL_GPL(edac_device_handle_ce);
621
622/*
623 * edac_device_handle_ue
624 * perform a common output and handling of an 'edac_dev' UE event
625 */
626void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev,
627 int inst_nr, int block_nr, const char *msg)
628{
629 struct edac_device_instance *instance;
630 struct edac_device_block *block = NULL;
631
632 if ((inst_nr >= edac_dev->nr_instances) || (inst_nr < 0)) {
633 edac_device_printk(edac_dev, KERN_ERR,
634 "INTERNAL ERROR: 'instance' out of range "
635 "(%d >= %d)\n", inst_nr, edac_dev->nr_instances);
636 return;
637 }
638
639 instance = edac_dev->instances + inst_nr;
640
641 if ((block_nr >= instance->nr_blocks) || (block_nr < 0)) {
642 edac_device_printk(edac_dev, KERN_ERR,
643 "INTERNAL ERROR: instance %d 'block' out of range "
644 "(%d >= %d)\n", inst_nr, block_nr, instance->nr_blocks);
645 return;
646 }
647
648 if (instance->nr_blocks > 0) {
649 block = instance->blocks + block_nr;
650 block->counters.ue_count++;
651 }
652
653 /* Propogate the count up the 'totals' tree */
654 instance->counters.ue_count++;
655 edac_dev->counters.ue_count++;
656
657 if (edac_device_get_log_ue(edac_dev))
658 edac_device_printk(edac_dev, KERN_EMERG,
659 "UE ctl: %s, instance: %s, block: %s: %s\n",
660 edac_dev->ctl_name, instance->name,
661 block ? block->name : "N/A", msg);
662
663 if (edac_device_get_panic_on_ue(edac_dev))
664 panic("EDAC %s: UE instance: %s, block %s: %s\n",
665 edac_dev->ctl_name, instance->name,
666 block ? block->name : "N/A", msg);
667}
668EXPORT_SYMBOL_GPL(edac_device_handle_ue);
669
diff --git a/drivers/edac/edac_device_sysfs.c b/drivers/edac/edac_device_sysfs.c
new file mode 100644
index 000000000000..afb190502646
--- /dev/null
+++ b/drivers/edac/edac_device_sysfs.c
@@ -0,0 +1,837 @@
1/*
2 * file for managing the edac_device class of devices for EDAC
3 *
4 * (C) 2007 SoftwareBitMaker(http://www.softwarebitmaker.com)
5 * This file may be distributed under the terms of the
6 * GNU General Public License.
7 *
8 * Written Doug Thompson <norsk5@xmission.com>
9 *
10 */
11
12#include <linux/module.h>
13#include <linux/sysdev.h>
14#include <linux/ctype.h>
15
16#include "edac_core.h"
17#include "edac_module.h"
18
19
20#define EDAC_DEVICE_SYMLINK "device"
21
22#define to_edacdev(k) container_of(k, struct edac_device_ctl_info, kobj)
23#define to_edacdev_attr(a) container_of(a, struct edacdev_attribute, attr)
24
25#ifdef DKT
26
27static ssize_t edac_dev_ue_count_show(struct edac_device_ctl_info *edac_dev,
28 char *data)
29{
30 return sprintf(data,"%d\n", edac_dev->ue_count);
31}
32
33static ssize_t edac_dev_ce_count_show(struct edac_device_ctl_info *edac_dev,
34 char *data)
35{
36 return sprintf(data,"%d\n", edac_dev->ce_count);
37}
38
39static ssize_t edac_dev_seconds_show(struct edac_device_ctl_info *edac_dev,
40 char *data)
41{
42 return sprintf(data,"%ld\n", (jiffies - edac_dev->start_time) / HZ);
43}
44
45static ssize_t edac_dev_ctl_name_show(struct edac_device_ctl_info *edac_dev,
46 char *data)
47{
48 return sprintf(data,"%s\n", edac_dev->ctl_name);
49}
50
51
52struct edacdev_attribute {
53 struct attribute attr;
54 ssize_t (*show)(struct edac_device_ctl_info *,char *);
55 ssize_t (*store)(struct edac_device_ctl_info *, const char *,size_t);
56};
57
58
59/* EDAC DEVICE show/store functions for top most object */
60static ssize_t edacdev_show(struct kobject *kobj, struct attribute *attr,
61 char *buffer)
62{
63 struct edac_device_ctl_info *edac_dev = to_edacdev(kobj);
64 struct edacdev_attribute * edacdev_attr = to_edacdev_attr(attr);
65
66 if (edacdev_attr->show)
67 return edacdev_attr->show(edac_dev, buffer);
68
69 return -EIO;
70}
71
72static ssize_t edacdev_store(struct kobject *kobj, struct attribute *attr,
73 const char *buffer, size_t count)
74{
75 struct edac_device_ctl_info *edac_dev = to_edacdev(kobj);
76 struct edacdev_attribute * edacdev_attr = to_edacdev_attr(attr);
77
78 if (edacdev_attr->store)
79 return edacdev_attr->store(edac_dev, buffer, count);
80
81 return -EIO;
82}
83
84static struct sysfs_ops edac_dev_ops = {
85 .show = edacdev_show,
86 .store = edacdev_store
87};
88
89#define EDACDEV_ATTR(_name,_mode,_show,_store) \
90static struct edacdev_attribute edac_dev_attr_##_name = { \
91 .attr = {.name = __stringify(_name), .mode = _mode }, \
92 .show = _show, \
93 .store = _store, \
94};
95
96/* default Control file */
97EDACDEV_ATTR(reset_counters,S_IWUSR,NULL,edac_dev_reset_counters_store);
98
99/* default Attribute files */
100EDACDEV_ATTR(mc_name,S_IRUGO,edac_dev_ctl_name_show,NULL);
101EDACDEV_ATTR(seconds_since_reset,S_IRUGO,edac_dev_seconds_show,NULL);
102EDACDEV_ATTR(ue_count,S_IRUGO,edac_dev_ue_count_show,NULL);
103EDACDEV_ATTR(ce_count,S_IRUGO,edac_dev_ce_count_show,NULL);
104
105
106static struct edacdev_attribute *edacdev_attr[] = {
107 &edacdev_attr_reset_counters,
108 &edacdev_attr_mc_name,
109 &edacdev_attr_seconds_since_reset,
110 &edacdev_attr_ue_count,
111 &edacdev_attr_ce_count,
112 NULL
113};
114
115/*
116 * Release of a Edac Device controlling instance
117 */
118static void edac_dev_instance_release(struct kobject *kobj)
119{
120 struct edac_device_ctl_info *edac_dev;
121
122 edac_dev = to_edacdev(kobj);
123 debugf0("%s() idx=%d\n", __func__, edac_dev->dev_idx);
124 complete(&edac_dev->kobj_complete);
125}
126
127static struct kobj_type ktype_device = {
128 .release = edac_dev_instance_release,
129 .sysfs_ops = &edacdev_ops,
130 .default_attrs = (struct attribute **) edacdev_attr,
131};
132
133#endif
134
135/************************** edac_device sysfs code and data **************/
136
137/*
138 * Set of edac_device_ctl_info attribute store/show functions
139 */
140
141/* 'log_ue' */
142static ssize_t edac_device_ctl_log_ue_show(
143 struct edac_device_ctl_info *ctl_info, char *data)
144{
145 return sprintf(data,"%u\n", ctl_info->log_ue);
146}
147
148static ssize_t edac_device_ctl_log_ue_store(
149 struct edac_device_ctl_info *ctl_info,
150 const char *data,size_t count)
151{
152 /* if parameter is zero, turn off flag, if non-zero turn on flag */
153 ctl_info->log_ue = (simple_strtoul(data,NULL,0) != 0);
154
155 return count;
156}
157
158/* 'log_ce' */
159static ssize_t edac_device_ctl_log_ce_show(
160 struct edac_device_ctl_info *ctl_info,char *data)
161{
162 return sprintf(data,"%u\n", ctl_info->log_ce);
163}
164
165static ssize_t edac_device_ctl_log_ce_store(
166 struct edac_device_ctl_info *ctl_info,
167 const char *data,size_t count)
168{
169 /* if parameter is zero, turn off flag, if non-zero turn on flag */
170 ctl_info->log_ce = (simple_strtoul(data,NULL,0) != 0);
171
172 return count;
173}
174
175
176/* 'panic_on_ue' */
177static ssize_t edac_device_ctl_panic_on_ue_show(
178 struct edac_device_ctl_info *ctl_info, char *data)
179{
180 return sprintf(data,"%u\n", ctl_info->panic_on_ue);
181}
182
183static ssize_t edac_device_ctl_panic_on_ue_store(
184 struct edac_device_ctl_info *ctl_info,
185 const char *data,size_t count)
186{
187 /* if parameter is zero, turn off flag, if non-zero turn on flag */
188 ctl_info->panic_on_ue = (simple_strtoul(data,NULL,0) != 0);
189
190 return count;
191}
192
193/* 'poll_msec' show and store functions*/
194static ssize_t edac_device_ctl_poll_msec_show(
195 struct edac_device_ctl_info *ctl_info, char *data)
196{
197 return sprintf(data,"%u\n", ctl_info->poll_msec);
198}
199
200static ssize_t edac_device_ctl_poll_msec_store(
201 struct edac_device_ctl_info *ctl_info,
202 const char *data,size_t count)
203{
204 unsigned long value;
205
206 /* get the value and enforce that it is non-zero, must be at least
207 * one millisecond for the delay period, between scans
208 * Then cancel last outstanding delay for the work request
209 * and set a new one.
210 */
211 value = simple_strtoul(data,NULL,0);
212 edac_device_reset_delay_period(ctl_info,value);
213
214 return count;
215}
216
217
218/* edac_device_ctl_info specific attribute structure */
219struct ctl_info_attribute {
220 struct attribute attr;
221 ssize_t (*show)(struct edac_device_ctl_info *,char *);
222 ssize_t (*store)(struct edac_device_ctl_info *,const char *,size_t);
223};
224
225#define to_ctl_info(k) container_of(k, struct edac_device_ctl_info, kobj)
226#define to_ctl_info_attr(a) container_of(a,struct ctl_info_attribute,attr)
227
228/* Function to 'show' fields from the edac_dev 'ctl_info' structure */
229static ssize_t edac_dev_ctl_info_show(struct kobject *kobj,
230 struct attribute *attr,
231 char *buffer)
232{
233 struct edac_device_ctl_info *edac_dev = to_ctl_info(kobj);
234 struct ctl_info_attribute *ctl_info_attr = to_ctl_info_attr(attr);
235
236 if (ctl_info_attr->show)
237 return ctl_info_attr->show(edac_dev,buffer);
238 return -EIO;
239}
240
241/* Function to 'store' fields into the edac_dev 'ctl_info' structure */
242static ssize_t edac_dev_ctl_info_store(struct kobject *kobj,
243 struct attribute *attr,
244 const char *buffer, size_t count)
245{
246 struct edac_device_ctl_info *edac_dev = to_ctl_info(kobj);
247 struct ctl_info_attribute *ctl_info_attr = to_ctl_info_attr(attr);
248
249 if (ctl_info_attr->store)
250 return ctl_info_attr->store(edac_dev, buffer, count);
251 return -EIO;
252}
253
254/* edac_dev file operations for an 'ctl_info' */
255static struct sysfs_ops device_ctl_info_ops = {
256 .show = edac_dev_ctl_info_show,
257 .store = edac_dev_ctl_info_store
258};
259
260#define CTL_INFO_ATTR(_name,_mode,_show,_store) \
261static struct ctl_info_attribute attr_ctl_info_##_name = { \
262 .attr = {.name = __stringify(_name), .mode = _mode }, \
263 .show = _show, \
264 .store = _store, \
265};
266
267
268/* Declare the various ctl_info attributes here and their respective ops */
269CTL_INFO_ATTR(log_ue,S_IRUGO|S_IWUSR,
270 edac_device_ctl_log_ue_show,
271 edac_device_ctl_log_ue_store);
272CTL_INFO_ATTR(log_ce,S_IRUGO|S_IWUSR,
273 edac_device_ctl_log_ce_show,
274 edac_device_ctl_log_ce_store);
275CTL_INFO_ATTR(panic_on_ue,S_IRUGO|S_IWUSR,
276 edac_device_ctl_panic_on_ue_show,
277 edac_device_ctl_panic_on_ue_store);
278CTL_INFO_ATTR(poll_msec,S_IRUGO|S_IWUSR,
279 edac_device_ctl_poll_msec_show,
280 edac_device_ctl_poll_msec_store);
281
282
283/* Base Attributes of the EDAC_DEVICE ECC object */
284static struct ctl_info_attribute *device_ctrl_attr[] = {
285 &attr_ctl_info_panic_on_ue,
286 &attr_ctl_info_log_ue,
287 &attr_ctl_info_log_ce,
288 &attr_ctl_info_poll_msec,
289 NULL,
290};
291
292/* Main DEVICE kobject release() function */
293static void edac_device_ctrl_master_release(struct kobject *kobj)
294{
295 struct edac_device_ctl_info *edac_dev;
296
297 edac_dev = to_edacdev(kobj);
298
299 debugf1("%s()\n", __func__);
300 complete(&edac_dev->kobj_complete);
301}
302
303static struct kobj_type ktype_device_ctrl = {
304 .release = edac_device_ctrl_master_release,
305 .sysfs_ops = &device_ctl_info_ops,
306 .default_attrs = (struct attribute **) device_ctrl_attr,
307};
308
309
310/**************** edac_device main kobj ctor/dtor code *********************/
311
312/*
313 * edac_device_register_main_kobj
314 *
315 * perform the high level setup for the new edac_device instance
316 *
317 * Return: 0 SUCCESS
318 * !0 FAILURE
319 */
320static int edac_device_register_main_kobj(
321 struct edac_device_ctl_info *edac_dev)
322{
323 int err = 0;
324 struct sysdev_class *edac_class;
325
326 debugf1("%s()\n", __func__);
327
328 /* get the /sys/devices/system/edac reference */
329 edac_class = edac_get_edac_class();
330 if (edac_class == NULL) {
331 debugf1("%s() no edac_class error=%d\n", __func__, err);
332 return err;
333 }
334
335 /* Point to the 'edac_class' this instance 'reports' to */
336 edac_dev->edac_class = edac_class;
337
338 /* Init the devices's kobject */
339 memset(&edac_dev->kobj, 0, sizeof (struct kobject));
340 edac_dev->kobj.ktype = &ktype_device_ctrl;
341
342 /* set this new device under the edac_class kobject */
343 edac_dev->kobj.parent = &edac_class->kset.kobj;
344
345 /* generate sysfs "..../edac/<name>" */
346 debugf1("%s() set name of kobject to: %s\n",
347 __func__, edac_dev->name);
348 err = kobject_set_name(&edac_dev->kobj,"%s",edac_dev->name);
349 if (err)
350 return err;
351 err = kobject_register(&edac_dev->kobj);
352 if (err) {
353 debugf1("%s()Failed to register '.../edac/%s'\n",
354 __func__,edac_dev->name);
355 return err;
356 }
357
358 debugf1("%s() Registered '.../edac/%s' kobject\n",
359 __func__, edac_dev->name);
360
361 return 0;
362}
363
364/*
365 * edac_device_unregister_main_kobj:
366 * the '..../edac/<name>' kobject
367 */
368static void edac_device_unregister_main_kobj(
369 struct edac_device_ctl_info *edac_dev)
370{
371 debugf0("%s()\n", __func__);
372 debugf1("%s() name of kobject is: %s\n",
373 __func__, kobject_name(&edac_dev->kobj));
374
375 init_completion(&edac_dev->kobj_complete);
376
377 /*
378 * Unregister the edac device's kobject and
379 * wait for reference count to reach 0.
380 */
381 kobject_unregister(&edac_dev->kobj);
382 wait_for_completion(&edac_dev->kobj_complete);
383}
384
385
386/*************** edac_dev -> instance information ***********/
387
388/*
389 * Set of low-level instance attribute show functions
390 */
391static ssize_t instance_ue_count_show(
392 struct edac_device_instance *instance, char *data)
393{
394 return sprintf(data,"%u\n", instance->counters.ue_count);
395}
396
397static ssize_t instance_ce_count_show(
398 struct edac_device_instance *instance, char *data)
399{
400 return sprintf(data,"%u\n", instance->counters.ce_count);
401}
402
403
404
405#define to_instance(k) container_of(k, struct edac_device_instance, kobj)
406#define to_instance_attr(a) container_of(a,struct instance_attribute,attr)
407
408/* DEVICE instance kobject release() function */
409static void edac_device_ctrl_instance_release(struct kobject *kobj)
410{
411 struct edac_device_instance *instance;
412
413 debugf1("%s()\n", __func__);
414
415 instance = to_instance(kobj);
416 complete(&instance->kobj_complete);
417}
418
419
420/* instance specific attribute structure */
421struct instance_attribute {
422 struct attribute attr;
423 ssize_t (*show)(struct edac_device_instance *,char *);
424 ssize_t (*store)(struct edac_device_instance *,const char *,size_t);
425};
426
427
428/* Function to 'show' fields from the edac_dev 'instance' structure */
429static ssize_t edac_dev_instance_show(struct kobject *kobj,
430 struct attribute *attr,
431 char *buffer)
432{
433 struct edac_device_instance *instance = to_instance(kobj);
434 struct instance_attribute *instance_attr = to_instance_attr(attr);
435
436 if (instance_attr->show)
437 return instance_attr->show(instance,buffer);
438 return -EIO;
439}
440
441
442/* Function to 'store' fields into the edac_dev 'instance' structure */
443static ssize_t edac_dev_instance_store(struct kobject *kobj,
444 struct attribute *attr,
445 const char *buffer, size_t count)
446{
447 struct edac_device_instance *instance = to_instance(kobj);
448 struct instance_attribute *instance_attr = to_instance_attr(attr);
449
450 if (instance_attr->store)
451 return instance_attr->store(instance, buffer, count);
452 return -EIO;
453}
454
455
456
457/* edac_dev file operations for an 'instance' */
458static struct sysfs_ops device_instance_ops = {
459 .show = edac_dev_instance_show,
460 .store = edac_dev_instance_store
461};
462
463#define INSTANCE_ATTR(_name,_mode,_show,_store) \
464static struct instance_attribute attr_instance_##_name = { \
465 .attr = {.name = __stringify(_name), .mode = _mode }, \
466 .show = _show, \
467 .store = _store, \
468};
469
470/*
471 * Define attributes visible for the edac_device instance object
472 * Each contains a pointer to a show and an optional set
473 * function pointer that does the low level output/input
474 */
475INSTANCE_ATTR(ce_count,S_IRUGO,instance_ce_count_show,NULL);
476INSTANCE_ATTR(ue_count,S_IRUGO,instance_ue_count_show,NULL);
477
478/* list of edac_dev 'instance' attributes */
479static struct instance_attribute *device_instance_attr[] = {
480 &attr_instance_ce_count,
481 &attr_instance_ue_count,
482 NULL,
483};
484
485/* The 'ktype' for each edac_dev 'instance' */
486static struct kobj_type ktype_instance_ctrl = {
487 .release = edac_device_ctrl_instance_release,
488 .sysfs_ops = &device_instance_ops,
489 .default_attrs = (struct attribute **) device_instance_attr,
490};
491
492
493/*************** edac_dev -> instance -> block information *********/
494
495/*
496 * Set of low-level block attribute show functions
497 */
498static ssize_t block_ue_count_show(
499 struct edac_device_block *block, char *data)
500{
501 return sprintf(data,"%u\n", block->counters.ue_count);
502}
503
504static ssize_t block_ce_count_show(
505 struct edac_device_block *block, char *data)
506{
507 return sprintf(data,"%u\n", block->counters.ce_count);
508}
509
510
511
512#define to_block(k) container_of(k, struct edac_device_block, kobj)
513#define to_block_attr(a) container_of(a,struct block_attribute,attr)
514
515/* DEVICE block kobject release() function */
516static void edac_device_ctrl_block_release(struct kobject *kobj)
517{
518 struct edac_device_block *block;
519
520 debugf1("%s()\n", __func__);
521
522 block = to_block(kobj);
523 complete(&block->kobj_complete);
524}
525
526/* block specific attribute structure */
527struct block_attribute {
528 struct attribute attr;
529 ssize_t (*show)(struct edac_device_block *,char *);
530 ssize_t (*store)(struct edac_device_block *,const char *,size_t);
531};
532
533/* Function to 'show' fields from the edac_dev 'block' structure */
534static ssize_t edac_dev_block_show(struct kobject *kobj,
535 struct attribute *attr,
536 char *buffer)
537{
538 struct edac_device_block *block = to_block(kobj);
539 struct block_attribute *block_attr = to_block_attr(attr);
540
541 if (block_attr->show)
542 return block_attr->show(block,buffer);
543 return -EIO;
544}
545
546
547/* Function to 'store' fields into the edac_dev 'block' structure */
548static ssize_t edac_dev_block_store(struct kobject *kobj,
549 struct attribute *attr,
550 const char *buffer, size_t count)
551{
552 struct edac_device_block *block = to_block(kobj);
553 struct block_attribute *block_attr = to_block_attr(attr);
554
555 if (block_attr->store)
556 return block_attr->store(block, buffer, count);
557 return -EIO;
558}
559
560
561/* edac_dev file operations for a 'block' */
562static struct sysfs_ops device_block_ops = {
563 .show = edac_dev_block_show,
564 .store = edac_dev_block_store
565};
566
567
568#define BLOCK_ATTR(_name,_mode,_show,_store) \
569static struct block_attribute attr_block_##_name = { \
570 .attr = {.name = __stringify(_name), .mode = _mode }, \
571 .show = _show, \
572 .store = _store, \
573};
574
575BLOCK_ATTR(ce_count,S_IRUGO,block_ce_count_show,NULL);
576BLOCK_ATTR(ue_count,S_IRUGO,block_ue_count_show,NULL);
577
578
579/* list of edac_dev 'block' attributes */
580static struct block_attribute *device_block_attr[] = {
581 &attr_block_ce_count,
582 &attr_block_ue_count,
583 NULL,
584};
585
586/* The 'ktype' for each edac_dev 'block' */
587static struct kobj_type ktype_block_ctrl = {
588 .release = edac_device_ctrl_block_release,
589 .sysfs_ops = &device_block_ops,
590 .default_attrs = (struct attribute **) device_block_attr,
591};
592
593
594/************** block ctor/dtor code ************/
595
596/*
597 * edac_device_create_block
598 */
599static int edac_device_create_block(
600 struct edac_device_ctl_info *edac_dev,
601 struct edac_device_instance *instance,
602 int idx)
603{
604 int err;
605 struct edac_device_block *block;
606
607 block = &instance->blocks[idx];
608
609 debugf1("%s() Instance '%s' block[%d] '%s'\n",
610 __func__,instance->name, idx, block->name);
611
612 /* init this block's kobject */
613 memset(&block->kobj, 0, sizeof (struct kobject));
614 block->kobj.parent = &instance->kobj;
615 block->kobj.ktype = &ktype_block_ctrl;
616
617 err = kobject_set_name(&block->kobj,"%s",block->name);
618 if (err)
619 return err;
620
621 err = kobject_register(&block->kobj);
622 if (err) {
623 debugf1("%s()Failed to register instance '%s'\n",
624 __func__,block->name);
625 return err;
626 }
627
628 return 0;
629}
630
631/*
632 * edac_device_delete_block(edac_dev,j);
633 */
634static void edac_device_delete_block(
635 struct edac_device_ctl_info *edac_dev,
636 struct edac_device_instance *instance,
637 int idx)
638{
639 struct edac_device_block *block;
640
641 block = &instance->blocks[idx];
642
643 /* unregister this block's kobject */
644 init_completion(&block->kobj_complete);
645 kobject_unregister(&block->kobj);
646 wait_for_completion(&block->kobj_complete);
647}
648
649/************** instance ctor/dtor code ************/
650
651/*
652 * edac_device_create_instance
653 * create just one instance of an edac_device 'instance'
654 */
655static int edac_device_create_instance(
656 struct edac_device_ctl_info *edac_dev, int idx)
657{
658 int i, j;
659 int err;
660 struct edac_device_instance *instance;
661
662 instance = &edac_dev->instances[idx];
663
664 /* Init the instance's kobject */
665 memset(&instance->kobj, 0, sizeof (struct kobject));
666
667 /* set this new device under the edac_device main kobject */
668 instance->kobj.parent = &edac_dev->kobj;
669 instance->kobj.ktype = &ktype_instance_ctrl;
670
671 err = kobject_set_name(&instance->kobj,"%s",instance->name);
672 if (err)
673 return err;
674
675 err = kobject_register(&instance->kobj);
676 if (err != 0) {
677 debugf2("%s() Failed to register instance '%s'\n",
678 __func__,instance->name);
679 return err;
680 }
681
682 debugf1("%s() now register '%d' blocks for instance %d\n",
683 __func__,instance->nr_blocks,idx);
684
685 /* register all blocks of this instance */
686 for (i = 0; i < instance->nr_blocks; i++ ) {
687 err = edac_device_create_block(edac_dev,instance,i);
688 if (err) {
689 for (j = 0; j < i; j++) {
690 edac_device_delete_block(edac_dev,instance,j);
691 }
692 return err;
693 }
694 }
695
696 debugf1("%s() Registered instance %d '%s' kobject\n",
697 __func__, idx, instance->name);
698
699 return 0;
700}
701
702/*
703 * edac_device_remove_instance
704 * remove an edac_device instance
705 */
706static void edac_device_delete_instance(
707 struct edac_device_ctl_info *edac_dev, int idx)
708{
709 int i;
710 struct edac_device_instance *instance;
711
712 instance = &edac_dev->instances[idx];
713
714 /* unregister all blocks in this instance */
715 for (i = 0; i < instance->nr_blocks; i++) {
716 edac_device_delete_block(edac_dev,instance,i);
717 }
718
719 /* unregister this instance's kobject */
720 init_completion(&instance->kobj_complete);
721 kobject_unregister(&instance->kobj);
722 wait_for_completion(&instance->kobj_complete);
723}
724
725/*
726 * edac_device_create_instances
727 * create the first level of 'instances' for this device
728 * (ie 'cache' might have 'cache0', 'cache1', 'cache2', etc
729 */
730static int edac_device_create_instances(struct edac_device_ctl_info *edac_dev)
731{
732 int i, j;
733 int err;
734
735 debugf0("%s()\n", __func__);
736
737 /* iterate over creation of the instances */
738 for (i = 0; i < edac_dev->nr_instances; i++ ) {
739 err = edac_device_create_instance(edac_dev,i);
740 if (err) {
741 /* unwind previous instances on error */
742 for (j = 0; j < i; j++) {
743 edac_device_delete_instance(edac_dev,j);
744 }
745 return err;
746 }
747 }
748
749 return 0;
750}
751
752/*
753 * edac_device_delete_instances(edac_dev);
754 * unregister all the kobjects of the instances
755 */
756static void edac_device_delete_instances(struct edac_device_ctl_info *edac_dev)
757{
758 int i;
759
760 /* iterate over creation of the instances */
761 for (i = 0; i < edac_dev->nr_instances; i++ ) {
762 edac_device_delete_instance(edac_dev,i);
763 }
764}
765
766/******************* edac_dev sysfs ctor/dtor code *************/
767
768/*
769 * edac_device_create_sysfs() Constructor
770 *
771 * Create a new edac_device kobject instance,
772 *
773 * Return:
774 * 0 Success
775 * !0 Failure
776 */
777int edac_device_create_sysfs(struct edac_device_ctl_info *edac_dev)
778{
779 int err;
780 struct kobject *edac_kobj=&edac_dev->kobj;
781
782 /* register this instance's main kobj with the edac class kobj */
783 err = edac_device_register_main_kobj(edac_dev);
784 if (err)
785 return err;
786
787 debugf0("%s() idx=%d\n", __func__, edac_dev->dev_idx);
788
789 /* create a symlink from the edac device
790 * to the platform 'device' being used for this
791 */
792 err = sysfs_create_link(edac_kobj,
793 &edac_dev->dev->kobj,
794 EDAC_DEVICE_SYMLINK);
795 if (err) {
796 debugf0("%s() sysfs_create_link() returned err= %d\n",
797 __func__, err);
798 return err;
799 }
800
801 debugf0("%s() calling create-instances, idx=%d\n",
802 __func__, edac_dev->dev_idx);
803
804 /* Create the first level instance directories */
805 err = edac_device_create_instances(edac_dev);
806 if (err) {
807 goto error0;
808 }
809
810 return 0;
811
812 /* Error unwind stack */
813
814error0:
815 edac_device_unregister_main_kobj(edac_dev);
816
817 return err;
818}
819
820/*
821 * edac_device_remove_sysfs() destructor
822 *
823 * remove a edac_device instance
824 */
825void edac_device_remove_sysfs(struct edac_device_ctl_info *edac_dev)
826{
827 debugf0("%s()\n", __func__);
828
829 edac_device_delete_instances(edac_dev);
830
831 /* remove the sym link */
832 sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK);
833
834 /* unregister the instance's main kobj */
835 edac_device_unregister_main_kobj(edac_dev);
836}
837
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index 3be5b7fe79cd..1f22d8cad6f7 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -88,7 +88,7 @@ static void edac_mc_dump_mci(struct mem_ctl_info *mci)
88 * If 'size' is a constant, the compiler will optimize this whole function 88 * If 'size' is a constant, the compiler will optimize this whole function
89 * down to either a no-op or the addition of a constant to the value of 'ptr'. 89 * down to either a no-op or the addition of a constant to the value of 'ptr'.
90 */ 90 */
91static inline char * align_ptr(void *ptr, unsigned size) 91char * edac_align_ptr(void *ptr, unsigned size)
92{ 92{
93 unsigned align, r; 93 unsigned align, r;
94 94
@@ -147,10 +147,10 @@ struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows,
147 * hardcode everything into a single struct. 147 * hardcode everything into a single struct.
148 */ 148 */
149 mci = (struct mem_ctl_info *) 0; 149 mci = (struct mem_ctl_info *) 0;
150 csi = (struct csrow_info *)align_ptr(&mci[1], sizeof(*csi)); 150 csi = (struct csrow_info *)edac_align_ptr(&mci[1], sizeof(*csi));
151 chi = (struct channel_info *) 151 chi = (struct channel_info *)
152 align_ptr(&csi[nr_csrows], sizeof(*chi)); 152 edac_align_ptr(&csi[nr_csrows], sizeof(*chi));
153 pvt = align_ptr(&chi[nr_chans * nr_csrows], sz_pvt); 153 pvt = edac_align_ptr(&chi[nr_chans * nr_csrows], sz_pvt);
154 size = ((unsigned long) pvt) + sz_pvt; 154 size = ((unsigned long) pvt) + sz_pvt;
155 155
156 if ((mci = kmalloc(size, GFP_KERNEL)) == NULL) 156 if ((mci = kmalloc(size, GFP_KERNEL)) == NULL)
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 4a5e335f61d3..35bcf926017f 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -94,14 +94,6 @@ static const char *edac_caps[] = {
94 [EDAC_S16ECD16ED] = "S16ECD16ED" 94 [EDAC_S16ECD16ED] = "S16ECD16ED"
95}; 95};
96 96
97/*
98 * sysfs object: /sys/devices/system/edac
99 * need to export to other files in this modules
100 */
101struct sysdev_class edac_class = {
102 set_kset_name("edac"),
103};
104
105/* sysfs object: 97/* sysfs object:
106 * /sys/devices/system/edac/mc 98 * /sys/devices/system/edac/mc
107 */ 99 */
@@ -224,43 +216,38 @@ static struct kobj_type ktype_memctrl = {
224int edac_sysfs_memctrl_setup(void) 216int edac_sysfs_memctrl_setup(void)
225{ 217{
226 int err = 0; 218 int err = 0;
219 struct sysdev_class *edac_class;
227 220
228 debugf1("%s()\n", __func__); 221 debugf1("%s()\n", __func__);
229 222
230 /* create the /sys/devices/system/edac directory */ 223 /* get the /sys/devices/system/edac class reference */
231 err = sysdev_class_register(&edac_class); 224 edac_class = edac_get_edac_class();
232 225 if (edac_class == NULL) {
233 if (err) { 226 debugf1("%s() no edac_class error=%d\n", __func__, err);
234 debugf1("%s() error=%d\n", __func__, err);
235 return err; 227 return err;
236 } 228 }
237 229
238 /* Init the MC's kobject */ 230 /* Init the MC's kobject */
239 memset(&edac_memctrl_kobj, 0, sizeof (edac_memctrl_kobj)); 231 memset(&edac_memctrl_kobj, 0, sizeof (edac_memctrl_kobj));
240 edac_memctrl_kobj.parent = &edac_class.kset.kobj; 232 edac_memctrl_kobj.parent = &edac_class->kset.kobj;
241 edac_memctrl_kobj.ktype = &ktype_memctrl; 233 edac_memctrl_kobj.ktype = &ktype_memctrl;
242 234
243 /* generate sysfs "..../edac/mc" */ 235 /* generate sysfs "..../edac/mc" */
244 err = kobject_set_name(&edac_memctrl_kobj,"mc"); 236 err = kobject_set_name(&edac_memctrl_kobj,"mc");
245 237 if (err) {
246 if (err) 238 debugf1("%s() Failed to set name '.../edac/mc'\n", __func__ );
247 goto fail; 239 return err;
240 }
248 241
249 /* FIXME: maybe new sysdev_create_subdir() */ 242 /* FIXME: maybe new sysdev_create_subdir() */
250 err = kobject_register(&edac_memctrl_kobj); 243 err = kobject_register(&edac_memctrl_kobj);
251
252 if (err) { 244 if (err) {
253 debugf1("Failed to register '.../edac/mc'\n"); 245 debugf1("%s() Failed to register '.../edac/mc'\n", __func__ );
254 goto fail; 246 return err;
255 } 247 }
256 248
257 debugf1("Registered '.../edac/mc' kobject\n"); 249 debugf1("%s() Registered '.../edac/mc' kobject\n",__func__);
258
259 return 0; 250 return 0;
260
261fail:
262 sysdev_class_unregister(&edac_class);
263 return err;
264} 251}
265 252
266/* 253/*
@@ -276,9 +263,6 @@ void edac_sysfs_memctrl_teardown(void)
276 init_completion(&edac_memctrl_kobj_complete); 263 init_completion(&edac_memctrl_kobj_complete);
277 kobject_unregister(&edac_memctrl_kobj); 264 kobject_unregister(&edac_memctrl_kobj);
278 wait_for_completion(&edac_memctrl_kobj_complete); 265 wait_for_completion(&edac_memctrl_kobj_complete);
279
280 /* Unregister the 'edac' object */
281 sysdev_class_unregister(&edac_class);
282} 266}
283 267
284 268
@@ -286,32 +270,38 @@ void edac_sysfs_memctrl_teardown(void)
286 */ 270 */
287 271
288/* Set of more default csrow<id> attribute show/store functions */ 272/* Set of more default csrow<id> attribute show/store functions */
289static ssize_t csrow_ue_count_show(struct csrow_info *csrow, char *data, int private) 273static ssize_t csrow_ue_count_show(struct csrow_info *csrow, char *data,
274 int private)
290{ 275{
291 return sprintf(data,"%u\n", csrow->ue_count); 276 return sprintf(data,"%u\n", csrow->ue_count);
292} 277}
293 278
294static ssize_t csrow_ce_count_show(struct csrow_info *csrow, char *data, int private) 279static ssize_t csrow_ce_count_show(struct csrow_info *csrow, char *data,
280 int private)
295{ 281{
296 return sprintf(data,"%u\n", csrow->ce_count); 282 return sprintf(data,"%u\n", csrow->ce_count);
297} 283}
298 284
299static ssize_t csrow_size_show(struct csrow_info *csrow, char *data, int private) 285static ssize_t csrow_size_show(struct csrow_info *csrow, char *data,
286 int private)
300{ 287{
301 return sprintf(data,"%u\n", PAGES_TO_MiB(csrow->nr_pages)); 288 return sprintf(data,"%u\n", PAGES_TO_MiB(csrow->nr_pages));
302} 289}
303 290
304static ssize_t csrow_mem_type_show(struct csrow_info *csrow, char *data, int private) 291static ssize_t csrow_mem_type_show(struct csrow_info *csrow, char *data,
292 int private)
305{ 293{
306 return sprintf(data,"%s\n", mem_types[csrow->mtype]); 294 return sprintf(data,"%s\n", mem_types[csrow->mtype]);
307} 295}
308 296
309static ssize_t csrow_dev_type_show(struct csrow_info *csrow, char *data, int private) 297static ssize_t csrow_dev_type_show(struct csrow_info *csrow, char *data,
298 int private)
310{ 299{
311 return sprintf(data,"%s\n", dev_types[csrow->dtype]); 300 return sprintf(data,"%s\n", dev_types[csrow->dtype]);
312} 301}
313 302
314static ssize_t csrow_edac_mode_show(struct csrow_info *csrow, char *data, int private) 303static ssize_t csrow_edac_mode_show(struct csrow_info *csrow, char *data,
304 int private)
315{ 305{
316 return sprintf(data,"%s\n", edac_caps[csrow->edac_mode]); 306 return sprintf(data,"%s\n", edac_caps[csrow->edac_mode]);
317} 307}
@@ -509,9 +499,10 @@ static int edac_create_channel_files(struct kobject *kobj, int chan)
509 if (!err) { 499 if (!err) {
510 /* create the CE Count attribute file */ 500 /* create the CE Count attribute file */
511 err = sysfs_create_file(kobj, 501 err = sysfs_create_file(kobj,
512 (struct attribute *) dynamic_csrow_ce_count_attr[chan]); 502 (struct attribute *)dynamic_csrow_ce_count_attr[chan]);
513 } else { 503 } else {
514 debugf1("%s() dimm labels and ce_count files created", __func__); 504 debugf1("%s() dimm labels and ce_count files created",
505 __func__);
515 } 506 }
516 507
517 return err; 508 return err;
@@ -643,7 +634,7 @@ static ssize_t mci_sdram_scrub_rate_show(struct mem_ctl_info *mci, char *data)
643 } else { 634 } else {
644 /* FIXME: produce "not implemented" ERROR for user-side. */ 635 /* FIXME: produce "not implemented" ERROR for user-side. */
645 edac_printk(KERN_WARNING, EDAC_MC, 636 edac_printk(KERN_WARNING, EDAC_MC,
646 "Memory scrubbing 'get' control is not implemented!\n"); 637 "Memory scrubbing 'get' control is not implemented\n");
647 } 638 }
648 return sprintf(data, "%d\n", bandwidth); 639 return sprintf(data, "%d\n", bandwidth);
649} 640}
@@ -755,7 +746,8 @@ MCIDEV_ATTR(ue_count,S_IRUGO,mci_ue_count_show,NULL);
755MCIDEV_ATTR(ce_count,S_IRUGO,mci_ce_count_show,NULL); 746MCIDEV_ATTR(ce_count,S_IRUGO,mci_ce_count_show,NULL);
756 747
757/* memory scrubber attribute file */ 748/* memory scrubber attribute file */
758MCIDEV_ATTR(sdram_scrub_rate,S_IRUGO|S_IWUSR,mci_sdram_scrub_rate_show,mci_sdram_scrub_rate_store); 749MCIDEV_ATTR(sdram_scrub_rate,S_IRUGO|S_IWUSR,mci_sdram_scrub_rate_show,\
750 mci_sdram_scrub_rate_store);
759 751
760static struct mcidev_attribute *mci_attr[] = { 752static struct mcidev_attribute *mci_attr[] = {
761 &mci_attr_reset_counters, 753 &mci_attr_reset_counters,
diff --git a/drivers/edac/edac_module.c b/drivers/edac/edac_module.c
index 8db0471a9476..3cd3a236821c 100644
--- a/drivers/edac/edac_module.c
+++ b/drivers/edac/edac_module.c
@@ -13,8 +13,77 @@ int edac_debug_level = 1;
13EXPORT_SYMBOL_GPL(edac_debug_level); 13EXPORT_SYMBOL_GPL(edac_debug_level);
14#endif 14#endif
15 15
16/* scope is to module level only */
17struct workqueue_struct *edac_workqueue;
18
19/* private to this file */
16static struct task_struct *edac_thread; 20static struct task_struct *edac_thread;
17 21
22
23/*
24 * sysfs object: /sys/devices/system/edac
25 * need to export to other files in this modules
26 */
27static struct sysdev_class edac_class = {
28 set_kset_name("edac"),
29};
30static int edac_class_valid = 0;
31
32/*
33 * edac_get_edac_class()
34 *
35 * return pointer to the edac class of 'edac'
36 */
37struct sysdev_class *edac_get_edac_class(void)
38{
39 struct sysdev_class *classptr=NULL;
40
41 if (edac_class_valid)
42 classptr = &edac_class;
43
44 return classptr;
45}
46
47/*
48 * edac_register_sysfs_edac_name()
49 *
50 * register the 'edac' into /sys/devices/system
51 *
52 * return:
53 * 0 success
54 * !0 error
55 */
56static int edac_register_sysfs_edac_name(void)
57{
58 int err;
59
60 /* create the /sys/devices/system/edac directory */
61 err = sysdev_class_register(&edac_class);
62
63 if (err) {
64 debugf1("%s() error=%d\n", __func__, err);
65 return err;
66 }
67
68 edac_class_valid = 1;
69 return 0;
70}
71
72/*
73 * sysdev_class_unregister()
74 *
75 * unregister the 'edac' from /sys/devices/system
76 */
77static void edac_unregister_sysfs_edac_name(void)
78{
79 /* only if currently registered, then unregister it */
80 if (edac_class_valid)
81 sysdev_class_unregister(&edac_class);
82
83 edac_class_valid = 0;
84}
85
86
18/* 87/*
19 * Check MC status every edac_get_poll_msec(). 88 * Check MC status every edac_get_poll_msec().
20 * Check PCI status every edac_get_poll_msec() as well. 89 * Check PCI status every edac_get_poll_msec() as well.
@@ -53,11 +122,40 @@ static int edac_kernel_thread(void *arg)
53} 122}
54 123
55/* 124/*
125 * edac_workqueue_setup
126 * initialize the edac work queue for polling operations
127 */
128static int edac_workqueue_setup(void)
129{
130 edac_workqueue = create_singlethread_workqueue("edac-poller");
131 if (edac_workqueue == NULL)
132 return -ENODEV;
133 else
134 return 0;
135}
136
137/*
138 * edac_workqueue_teardown
139 * teardown the edac workqueue
140 */
141static void edac_workqueue_teardown(void)
142{
143 if (edac_workqueue) {
144 flush_workqueue(edac_workqueue);
145 destroy_workqueue(edac_workqueue);
146 edac_workqueue = NULL;
147 }
148}
149
150
151/*
56 * edac_init 152 * edac_init
57 * module initialization entry point 153 * module initialization entry point
58 */ 154 */
59static int __init edac_init(void) 155static int __init edac_init(void)
60{ 156{
157 int err = 0;
158
61 edac_printk(KERN_INFO, EDAC_MC, EDAC_MC_VERSION "\n"); 159 edac_printk(KERN_INFO, EDAC_MC, EDAC_MC_VERSION "\n");
62 160
63 /* 161 /*
@@ -69,32 +167,61 @@ static int __init edac_init(void)
69 */ 167 */
70 edac_pci_clear_parity_errors(); 168 edac_pci_clear_parity_errors();
71 169
72 /* Create the MC sysfs entries */ 170 /*
171 * perform the registration of the /sys/devices/system/edac object
172 */
173 if (edac_register_sysfs_edac_name()) {
174 edac_printk(KERN_ERR, EDAC_MC,
175 "Error initializing 'edac' kobject\n");
176 err = -ENODEV;
177 goto error;
178 }
179
180 /* Create the MC sysfs entries, must be first
181 */
73 if (edac_sysfs_memctrl_setup()) { 182 if (edac_sysfs_memctrl_setup()) {
74 edac_printk(KERN_ERR, EDAC_MC, 183 edac_printk(KERN_ERR, EDAC_MC,
75 "Error initializing sysfs code\n"); 184 "Error initializing sysfs code\n");
76 return -ENODEV; 185 err = -ENODEV;
186 goto error_sysfs;
77 } 187 }
78 188
79 /* Create the PCI parity sysfs entries */ 189 /* Create the PCI parity sysfs entries */
80 if (edac_sysfs_pci_setup()) { 190 if (edac_sysfs_pci_setup()) {
81 edac_sysfs_memctrl_teardown();
82 edac_printk(KERN_ERR, EDAC_MC, 191 edac_printk(KERN_ERR, EDAC_MC,
83 "PCI: Error initializing sysfs code\n"); 192 "PCI: Error initializing sysfs code\n");
84 return -ENODEV; 193 err = -ENODEV;
194 goto error_mem;
195 }
196
197 /* Setup/Initialize the edac_device system */
198 err = edac_workqueue_setup();
199 if (err) {
200 edac_printk(KERN_ERR, EDAC_MC, "init WorkQueue failure\n");
201 goto error_pci;
85 } 202 }
86 203
87 /* create our kernel thread */ 204 /* create our kernel thread */
88 edac_thread = kthread_run(edac_kernel_thread, NULL, "kedac"); 205 edac_thread = kthread_run(edac_kernel_thread, NULL, "kedac");
89 206
90 if (IS_ERR(edac_thread)) { 207 if (IS_ERR(edac_thread)) {
91 /* remove the sysfs entries */ 208 err = PTR_ERR(edac_thread);
92 edac_sysfs_memctrl_teardown(); 209 goto error_work;
93 edac_sysfs_pci_teardown();
94 return PTR_ERR(edac_thread);
95 } 210 }
96 211
97 return 0; 212 return 0;
213
214 /* Error teardown stack */
215error_work:
216 edac_workqueue_teardown();
217error_pci:
218 edac_sysfs_pci_teardown();
219error_mem:
220 edac_sysfs_memctrl_teardown();
221error_sysfs:
222 edac_unregister_sysfs_edac_name();
223error:
224 return err;
98} 225}
99 226
100/* 227/*
@@ -106,9 +233,11 @@ static void __exit edac_exit(void)
106 debugf0("%s()\n", __func__); 233 debugf0("%s()\n", __func__);
107 kthread_stop(edac_thread); 234 kthread_stop(edac_thread);
108 235
109 /* tear down the sysfs device */ 236 /* tear down the various subsystems*/
237 edac_workqueue_teardown();
110 edac_sysfs_memctrl_teardown(); 238 edac_sysfs_memctrl_teardown();
111 edac_sysfs_pci_teardown(); 239 edac_sysfs_pci_teardown();
240 edac_unregister_sysfs_edac_name();
112} 241}
113 242
114/* 243/*
diff --git a/drivers/edac/edac_module.h b/drivers/edac/edac_module.h
index 69c77f85bcd4..2758d03c3e03 100644
--- a/drivers/edac/edac_module.h
+++ b/drivers/edac/edac_module.h
@@ -33,6 +33,15 @@ extern int edac_device_create_sysfs(struct edac_device_ctl_info *edac_dev);
33extern void edac_device_remove_sysfs(struct edac_device_ctl_info *edac_dev); 33extern void edac_device_remove_sysfs(struct edac_device_ctl_info *edac_dev);
34extern struct sysdev_class *edac_get_edac_class(void); 34extern struct sysdev_class *edac_get_edac_class(void);
35 35
36/* edac core workqueue: single CPU mode */
37extern struct workqueue_struct *edac_workqueue;
38extern void edac_workq_setup(struct edac_device_ctl_info *edac_dev,
39 unsigned msec);
40extern void edac_workq_teardown(struct edac_device_ctl_info *edac_dev);
41extern void edac_device_reset_delay_period(
42 struct edac_device_ctl_info *edac_dev,
43 unsigned long value);
44
36 45
37/* 46/*
38 * EDAC PCI functions 47 * EDAC PCI functions
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-08 18:26:11 -0400