Commit | Line | Data |
---|---|---|
7c9281d7 DT |
1 | /* |
2 | * edac_mc kernel module | |
42a8e397 DT |
3 | * (C) 2005-2007 Linux Networx (http://lnxi.com) |
4 | * | |
7c9281d7 DT |
5 | * This file may be distributed under the terms of the |
6 | * GNU General Public License. | |
7 | * | |
42a8e397 | 8 | * Written Doug Thompson <norsk5@xmission.com> www.softwarebitmaker.com |
7c9281d7 DT |
9 | * |
10 | */ | |
11 | ||
7c9281d7 | 12 | #include <linux/ctype.h> |
8096cfaf | 13 | #include <linux/bug.h> |
7c9281d7 | 14 | |
20bcb7a8 | 15 | #include "edac_core.h" |
7c9281d7 DT |
16 | #include "edac_module.h" |
17 | ||
8096cfaf | 18 | |
7c9281d7 | 19 | /* MC EDAC Controls, setable by module parameter, and sysfs */ |
4de78c68 DJ |
20 | static int edac_mc_log_ue = 1; |
21 | static int edac_mc_log_ce = 1; | |
f044091c | 22 | static int edac_mc_panic_on_ue; |
4de78c68 | 23 | static int edac_mc_poll_msec = 1000; |
7c9281d7 DT |
24 | |
25 | /* Getter functions for above */ | |
4de78c68 | 26 | int edac_mc_get_log_ue(void) |
7c9281d7 | 27 | { |
4de78c68 | 28 | return edac_mc_log_ue; |
7c9281d7 DT |
29 | } |
30 | ||
4de78c68 | 31 | int edac_mc_get_log_ce(void) |
7c9281d7 | 32 | { |
4de78c68 | 33 | return edac_mc_log_ce; |
7c9281d7 DT |
34 | } |
35 | ||
4de78c68 | 36 | int edac_mc_get_panic_on_ue(void) |
7c9281d7 | 37 | { |
4de78c68 | 38 | return edac_mc_panic_on_ue; |
7c9281d7 DT |
39 | } |
40 | ||
81d87cb1 DJ |
41 | /* this is temporary */ |
42 | int edac_mc_get_poll_msec(void) | |
43 | { | |
4de78c68 | 44 | return edac_mc_poll_msec; |
7c9281d7 DT |
45 | } |
46 | ||
47 | /* Parameter declarations for above */ | |
4de78c68 DJ |
48 | module_param(edac_mc_panic_on_ue, int, 0644); |
49 | MODULE_PARM_DESC(edac_mc_panic_on_ue, "Panic on uncorrected error: 0=off 1=on"); | |
50 | module_param(edac_mc_log_ue, int, 0644); | |
51 | MODULE_PARM_DESC(edac_mc_log_ue, | |
079708b9 | 52 | "Log uncorrectable error to console: 0=off 1=on"); |
4de78c68 DJ |
53 | module_param(edac_mc_log_ce, int, 0644); |
54 | MODULE_PARM_DESC(edac_mc_log_ce, | |
079708b9 | 55 | "Log correctable error to console: 0=off 1=on"); |
4de78c68 DJ |
56 | module_param(edac_mc_poll_msec, int, 0644); |
57 | MODULE_PARM_DESC(edac_mc_poll_msec, "Polling period in milliseconds"); | |
7c9281d7 | 58 | |
7c9281d7 DT |
59 | /* |
60 | * various constants for Memory Controllers | |
61 | */ | |
62 | static const char *mem_types[] = { | |
63 | [MEM_EMPTY] = "Empty", | |
64 | [MEM_RESERVED] = "Reserved", | |
65 | [MEM_UNKNOWN] = "Unknown", | |
66 | [MEM_FPM] = "FPM", | |
67 | [MEM_EDO] = "EDO", | |
68 | [MEM_BEDO] = "BEDO", | |
69 | [MEM_SDR] = "Unbuffered-SDR", | |
70 | [MEM_RDR] = "Registered-SDR", | |
71 | [MEM_DDR] = "Unbuffered-DDR", | |
72 | [MEM_RDDR] = "Registered-DDR", | |
1a9b85e6 DJ |
73 | [MEM_RMBS] = "RMBS", |
74 | [MEM_DDR2] = "Unbuffered-DDR2", | |
75 | [MEM_FB_DDR2] = "FullyBuffered-DDR2", | |
76 | [MEM_RDDR2] = "Registered-DDR2" | |
7c9281d7 DT |
77 | }; |
78 | ||
79 | static const char *dev_types[] = { | |
80 | [DEV_UNKNOWN] = "Unknown", | |
81 | [DEV_X1] = "x1", | |
82 | [DEV_X2] = "x2", | |
83 | [DEV_X4] = "x4", | |
84 | [DEV_X8] = "x8", | |
85 | [DEV_X16] = "x16", | |
86 | [DEV_X32] = "x32", | |
87 | [DEV_X64] = "x64" | |
88 | }; | |
89 | ||
90 | static const char *edac_caps[] = { | |
91 | [EDAC_UNKNOWN] = "Unknown", | |
92 | [EDAC_NONE] = "None", | |
93 | [EDAC_RESERVED] = "Reserved", | |
94 | [EDAC_PARITY] = "PARITY", | |
95 | [EDAC_EC] = "EC", | |
96 | [EDAC_SECDED] = "SECDED", | |
97 | [EDAC_S2ECD2ED] = "S2ECD2ED", | |
98 | [EDAC_S4ECD4ED] = "S4ECD4ED", | |
99 | [EDAC_S8ECD8ED] = "S8ECD8ED", | |
100 | [EDAC_S16ECD16ED] = "S16ECD16ED" | |
101 | }; | |
102 | ||
7c9281d7 | 103 | |
7c9281d7 DT |
104 | |
105 | /* | |
106 | * /sys/devices/system/edac/mc; | |
107 | * data structures and methods | |
108 | */ | |
109 | static ssize_t memctrl_int_show(void *ptr, char *buffer) | |
110 | { | |
079708b9 | 111 | int *value = (int *)ptr; |
7c9281d7 DT |
112 | return sprintf(buffer, "%u\n", *value); |
113 | } | |
114 | ||
115 | static ssize_t memctrl_int_store(void *ptr, const char *buffer, size_t count) | |
116 | { | |
079708b9 | 117 | int *value = (int *)ptr; |
7c9281d7 DT |
118 | |
119 | if (isdigit(*buffer)) | |
120 | *value = simple_strtoul(buffer, NULL, 0); | |
121 | ||
122 | return count; | |
123 | } | |
124 | ||
bce19683 DT |
125 | /* |
126 | * mc poll_msec time value | |
127 | */ | |
128 | static ssize_t poll_msec_int_store(void *ptr, const char *buffer, size_t count) | |
129 | { | |
130 | int *value = (int *)ptr; | |
131 | ||
132 | if (isdigit(*buffer)) { | |
133 | *value = simple_strtoul(buffer, NULL, 0); | |
134 | ||
135 | /* notify edac_mc engine to reset the poll period */ | |
136 | edac_mc_reset_delay_period(*value); | |
137 | } | |
138 | ||
139 | return count; | |
140 | } | |
141 | ||
7c9281d7 | 142 | |
7c9281d7 DT |
143 | /* EDAC sysfs CSROW data structures and methods |
144 | */ | |
145 | ||
146 | /* Set of more default csrow<id> attribute show/store functions */ | |
e27e3dac | 147 | static ssize_t csrow_ue_count_show(struct csrow_info *csrow, char *data, |
052dfb45 | 148 | int private) |
7c9281d7 | 149 | { |
079708b9 | 150 | return sprintf(data, "%u\n", csrow->ue_count); |
7c9281d7 DT |
151 | } |
152 | ||
e27e3dac | 153 | static ssize_t csrow_ce_count_show(struct csrow_info *csrow, char *data, |
052dfb45 | 154 | int private) |
7c9281d7 | 155 | { |
079708b9 | 156 | return sprintf(data, "%u\n", csrow->ce_count); |
7c9281d7 DT |
157 | } |
158 | ||
e27e3dac | 159 | static ssize_t csrow_size_show(struct csrow_info *csrow, char *data, |
052dfb45 | 160 | int private) |
7c9281d7 | 161 | { |
079708b9 | 162 | return sprintf(data, "%u\n", PAGES_TO_MiB(csrow->nr_pages)); |
7c9281d7 DT |
163 | } |
164 | ||
e27e3dac | 165 | static ssize_t csrow_mem_type_show(struct csrow_info *csrow, char *data, |
052dfb45 | 166 | int private) |
7c9281d7 | 167 | { |
079708b9 | 168 | return sprintf(data, "%s\n", mem_types[csrow->mtype]); |
7c9281d7 DT |
169 | } |
170 | ||
e27e3dac | 171 | static ssize_t csrow_dev_type_show(struct csrow_info *csrow, char *data, |
052dfb45 | 172 | int private) |
7c9281d7 | 173 | { |
079708b9 | 174 | return sprintf(data, "%s\n", dev_types[csrow->dtype]); |
7c9281d7 DT |
175 | } |
176 | ||
e27e3dac | 177 | static ssize_t csrow_edac_mode_show(struct csrow_info *csrow, char *data, |
052dfb45 | 178 | int private) |
7c9281d7 | 179 | { |
079708b9 | 180 | return sprintf(data, "%s\n", edac_caps[csrow->edac_mode]); |
7c9281d7 DT |
181 | } |
182 | ||
183 | /* show/store functions for DIMM Label attributes */ | |
184 | static ssize_t channel_dimm_label_show(struct csrow_info *csrow, | |
052dfb45 | 185 | char *data, int channel) |
7c9281d7 | 186 | { |
079708b9 | 187 | return snprintf(data, EDAC_MC_LABEL_LEN, "%s", |
7c9281d7 DT |
188 | csrow->channels[channel].label); |
189 | } | |
190 | ||
191 | static ssize_t channel_dimm_label_store(struct csrow_info *csrow, | |
079708b9 DT |
192 | const char *data, |
193 | size_t count, int channel) | |
7c9281d7 DT |
194 | { |
195 | ssize_t max_size = 0; | |
196 | ||
079708b9 | 197 | max_size = min((ssize_t) count, (ssize_t) EDAC_MC_LABEL_LEN - 1); |
7c9281d7 DT |
198 | strncpy(csrow->channels[channel].label, data, max_size); |
199 | csrow->channels[channel].label[max_size] = '\0'; | |
200 | ||
201 | return max_size; | |
202 | } | |
203 | ||
204 | /* show function for dynamic chX_ce_count attribute */ | |
205 | static ssize_t channel_ce_count_show(struct csrow_info *csrow, | |
052dfb45 | 206 | char *data, int channel) |
7c9281d7 DT |
207 | { |
208 | return sprintf(data, "%u\n", csrow->channels[channel].ce_count); | |
209 | } | |
210 | ||
211 | /* csrow specific attribute structure */ | |
212 | struct csrowdev_attribute { | |
213 | struct attribute attr; | |
079708b9 DT |
214 | ssize_t(*show) (struct csrow_info *, char *, int); |
215 | ssize_t(*store) (struct csrow_info *, const char *, size_t, int); | |
216 | int private; | |
7c9281d7 DT |
217 | }; |
218 | ||
219 | #define to_csrow(k) container_of(k, struct csrow_info, kobj) | |
220 | #define to_csrowdev_attr(a) container_of(a, struct csrowdev_attribute, attr) | |
221 | ||
222 | /* Set of show/store higher level functions for default csrow attributes */ | |
223 | static ssize_t csrowdev_show(struct kobject *kobj, | |
052dfb45 | 224 | struct attribute *attr, char *buffer) |
7c9281d7 DT |
225 | { |
226 | struct csrow_info *csrow = to_csrow(kobj); | |
227 | struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr); | |
228 | ||
229 | if (csrowdev_attr->show) | |
230 | return csrowdev_attr->show(csrow, | |
052dfb45 | 231 | buffer, csrowdev_attr->private); |
7c9281d7 DT |
232 | return -EIO; |
233 | } | |
234 | ||
235 | static ssize_t csrowdev_store(struct kobject *kobj, struct attribute *attr, | |
052dfb45 | 236 | const char *buffer, size_t count) |
7c9281d7 DT |
237 | { |
238 | struct csrow_info *csrow = to_csrow(kobj); | |
079708b9 | 239 | struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr); |
7c9281d7 DT |
240 | |
241 | if (csrowdev_attr->store) | |
242 | return csrowdev_attr->store(csrow, | |
052dfb45 DT |
243 | buffer, |
244 | count, csrowdev_attr->private); | |
7c9281d7 DT |
245 | return -EIO; |
246 | } | |
247 | ||
248 | static struct sysfs_ops csrowfs_ops = { | |
079708b9 DT |
249 | .show = csrowdev_show, |
250 | .store = csrowdev_store | |
7c9281d7 DT |
251 | }; |
252 | ||
253 | #define CSROWDEV_ATTR(_name,_mode,_show,_store,_private) \ | |
254 | static struct csrowdev_attribute attr_##_name = { \ | |
255 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
256 | .show = _show, \ | |
257 | .store = _store, \ | |
258 | .private = _private, \ | |
259 | }; | |
260 | ||
261 | /* default cwrow<id>/attribute files */ | |
079708b9 DT |
262 | CSROWDEV_ATTR(size_mb, S_IRUGO, csrow_size_show, NULL, 0); |
263 | CSROWDEV_ATTR(dev_type, S_IRUGO, csrow_dev_type_show, NULL, 0); | |
264 | CSROWDEV_ATTR(mem_type, S_IRUGO, csrow_mem_type_show, NULL, 0); | |
265 | CSROWDEV_ATTR(edac_mode, S_IRUGO, csrow_edac_mode_show, NULL, 0); | |
266 | CSROWDEV_ATTR(ue_count, S_IRUGO, csrow_ue_count_show, NULL, 0); | |
267 | CSROWDEV_ATTR(ce_count, S_IRUGO, csrow_ce_count_show, NULL, 0); | |
7c9281d7 DT |
268 | |
269 | /* default attributes of the CSROW<id> object */ | |
270 | static struct csrowdev_attribute *default_csrow_attr[] = { | |
271 | &attr_dev_type, | |
272 | &attr_mem_type, | |
273 | &attr_edac_mode, | |
274 | &attr_size_mb, | |
275 | &attr_ue_count, | |
276 | &attr_ce_count, | |
277 | NULL, | |
278 | }; | |
279 | ||
7c9281d7 | 280 | /* possible dynamic channel DIMM Label attribute files */ |
079708b9 | 281 | CSROWDEV_ATTR(ch0_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 282 | channel_dimm_label_show, channel_dimm_label_store, 0); |
079708b9 | 283 | CSROWDEV_ATTR(ch1_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 284 | channel_dimm_label_show, channel_dimm_label_store, 1); |
079708b9 | 285 | CSROWDEV_ATTR(ch2_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 286 | channel_dimm_label_show, channel_dimm_label_store, 2); |
079708b9 | 287 | CSROWDEV_ATTR(ch3_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 288 | channel_dimm_label_show, channel_dimm_label_store, 3); |
079708b9 | 289 | CSROWDEV_ATTR(ch4_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 290 | channel_dimm_label_show, channel_dimm_label_store, 4); |
079708b9 | 291 | CSROWDEV_ATTR(ch5_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 292 | channel_dimm_label_show, channel_dimm_label_store, 5); |
7c9281d7 DT |
293 | |
294 | /* Total possible dynamic DIMM Label attribute file table */ | |
295 | static struct csrowdev_attribute *dynamic_csrow_dimm_attr[] = { | |
079708b9 DT |
296 | &attr_ch0_dimm_label, |
297 | &attr_ch1_dimm_label, | |
298 | &attr_ch2_dimm_label, | |
299 | &attr_ch3_dimm_label, | |
300 | &attr_ch4_dimm_label, | |
301 | &attr_ch5_dimm_label | |
7c9281d7 DT |
302 | }; |
303 | ||
304 | /* possible dynamic channel ce_count attribute files */ | |
079708b9 DT |
305 | CSROWDEV_ATTR(ch0_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 0); |
306 | CSROWDEV_ATTR(ch1_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 1); | |
307 | CSROWDEV_ATTR(ch2_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 2); | |
308 | CSROWDEV_ATTR(ch3_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 3); | |
309 | CSROWDEV_ATTR(ch4_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 4); | |
310 | CSROWDEV_ATTR(ch5_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 5); | |
7c9281d7 DT |
311 | |
312 | /* Total possible dynamic ce_count attribute file table */ | |
313 | static struct csrowdev_attribute *dynamic_csrow_ce_count_attr[] = { | |
079708b9 DT |
314 | &attr_ch0_ce_count, |
315 | &attr_ch1_ce_count, | |
316 | &attr_ch2_ce_count, | |
317 | &attr_ch3_ce_count, | |
318 | &attr_ch4_ce_count, | |
319 | &attr_ch5_ce_count | |
7c9281d7 DT |
320 | }; |
321 | ||
7c9281d7 DT |
322 | #define EDAC_NR_CHANNELS 6 |
323 | ||
324 | /* Create dynamic CHANNEL files, indexed by 'chan', under specifed CSROW */ | |
325 | static int edac_create_channel_files(struct kobject *kobj, int chan) | |
326 | { | |
079708b9 | 327 | int err = -ENODEV; |
7c9281d7 DT |
328 | |
329 | if (chan >= EDAC_NR_CHANNELS) | |
330 | return err; | |
331 | ||
332 | /* create the DIMM label attribute file */ | |
333 | err = sysfs_create_file(kobj, | |
079708b9 DT |
334 | (struct attribute *) |
335 | dynamic_csrow_dimm_attr[chan]); | |
7c9281d7 DT |
336 | |
337 | if (!err) { | |
338 | /* create the CE Count attribute file */ | |
339 | err = sysfs_create_file(kobj, | |
079708b9 DT |
340 | (struct attribute *) |
341 | dynamic_csrow_ce_count_attr[chan]); | |
7c9281d7 | 342 | } else { |
e27e3dac DT |
343 | debugf1("%s() dimm labels and ce_count files created", |
344 | __func__); | |
7c9281d7 DT |
345 | } |
346 | ||
347 | return err; | |
348 | } | |
349 | ||
350 | /* No memory to release for this kobj */ | |
351 | static void edac_csrow_instance_release(struct kobject *kobj) | |
352 | { | |
8096cfaf | 353 | struct mem_ctl_info *mci; |
7c9281d7 DT |
354 | struct csrow_info *cs; |
355 | ||
8096cfaf DT |
356 | debugf1("%s()\n", __func__); |
357 | ||
7c9281d7 | 358 | cs = container_of(kobj, struct csrow_info, kobj); |
8096cfaf DT |
359 | mci = cs->mci; |
360 | ||
361 | kobject_put(&mci->edac_mci_kobj); | |
7c9281d7 DT |
362 | } |
363 | ||
364 | /* the kobj_type instance for a CSROW */ | |
365 | static struct kobj_type ktype_csrow = { | |
366 | .release = edac_csrow_instance_release, | |
367 | .sysfs_ops = &csrowfs_ops, | |
079708b9 | 368 | .default_attrs = (struct attribute **)default_csrow_attr, |
7c9281d7 DT |
369 | }; |
370 | ||
371 | /* Create a CSROW object under specifed edac_mc_device */ | |
8096cfaf DT |
372 | static int edac_create_csrow_object(struct mem_ctl_info *mci, |
373 | struct csrow_info *csrow, int index) | |
7c9281d7 | 374 | { |
8096cfaf DT |
375 | struct kobject *kobj_mci = &mci->edac_mci_kobj; |
376 | struct kobject *kobj; | |
7c9281d7 | 377 | int chan; |
8096cfaf | 378 | int err; |
7c9281d7 DT |
379 | |
380 | /* generate ..../edac/mc/mc<id>/csrow<index> */ | |
8096cfaf DT |
381 | memset(&csrow->kobj, 0, sizeof(csrow->kobj)); |
382 | csrow->mci = mci; /* include container up link */ | |
383 | csrow->kobj.parent = kobj_mci; | |
7c9281d7 DT |
384 | csrow->kobj.ktype = &ktype_csrow; |
385 | ||
386 | /* name this instance of csrow<id> */ | |
079708b9 | 387 | err = kobject_set_name(&csrow->kobj, "csrow%d", index); |
7c9281d7 | 388 | if (err) |
8096cfaf DT |
389 | goto err_out; |
390 | ||
391 | /* bump the mci instance's kobject's ref count */ | |
392 | kobj = kobject_get(&mci->edac_mci_kobj); | |
393 | if (!kobj) { | |
394 | err = -ENODEV; | |
395 | goto err_out; | |
396 | } | |
7c9281d7 DT |
397 | |
398 | /* Instanstiate the csrow object */ | |
399 | err = kobject_register(&csrow->kobj); | |
8096cfaf DT |
400 | if (err) |
401 | goto err_release_top_kobj; | |
402 | ||
403 | /* At this point, to release a csrow kobj, one must | |
404 | * call the kobject_unregister and allow that tear down | |
405 | * to work the releasing | |
406 | */ | |
407 | ||
408 | /* Create the dyanmic attribute files on this csrow, | |
409 | * namely, the DIMM labels and the channel ce_count | |
410 | */ | |
411 | for (chan = 0; chan < csrow->nr_channels; chan++) { | |
412 | err = edac_create_channel_files(&csrow->kobj, chan); | |
413 | if (err) { | |
414 | /* special case the unregister here */ | |
415 | kobject_unregister(&csrow->kobj); | |
416 | goto err_out; | |
7c9281d7 DT |
417 | } |
418 | } | |
419 | ||
8096cfaf DT |
420 | return 0; |
421 | ||
422 | /* error unwind stack */ | |
423 | err_release_top_kobj: | |
424 | kobject_put(&mci->edac_mci_kobj); | |
425 | ||
426 | err_out: | |
7c9281d7 DT |
427 | return err; |
428 | } | |
429 | ||
430 | /* default sysfs methods and data structures for the main MCI kobject */ | |
431 | ||
432 | static ssize_t mci_reset_counters_store(struct mem_ctl_info *mci, | |
079708b9 | 433 | const char *data, size_t count) |
7c9281d7 DT |
434 | { |
435 | int row, chan; | |
436 | ||
437 | mci->ue_noinfo_count = 0; | |
438 | mci->ce_noinfo_count = 0; | |
439 | mci->ue_count = 0; | |
440 | mci->ce_count = 0; | |
441 | ||
442 | for (row = 0; row < mci->nr_csrows; row++) { | |
443 | struct csrow_info *ri = &mci->csrows[row]; | |
444 | ||
445 | ri->ue_count = 0; | |
446 | ri->ce_count = 0; | |
447 | ||
448 | for (chan = 0; chan < ri->nr_channels; chan++) | |
449 | ri->channels[chan].ce_count = 0; | |
450 | } | |
451 | ||
452 | mci->start_time = jiffies; | |
453 | return count; | |
454 | } | |
455 | ||
456 | /* memory scrubbing */ | |
457 | static ssize_t mci_sdram_scrub_rate_store(struct mem_ctl_info *mci, | |
052dfb45 | 458 | const char *data, size_t count) |
7c9281d7 DT |
459 | { |
460 | u32 bandwidth = -1; | |
461 | ||
462 | if (mci->set_sdram_scrub_rate) { | |
463 | ||
464 | memctrl_int_store(&bandwidth, data, count); | |
465 | ||
079708b9 | 466 | if (!(*mci->set_sdram_scrub_rate) (mci, &bandwidth)) { |
7c9281d7 | 467 | edac_printk(KERN_DEBUG, EDAC_MC, |
052dfb45 DT |
468 | "Scrub rate set successfully, applied: %d\n", |
469 | bandwidth); | |
7c9281d7 DT |
470 | } else { |
471 | /* FIXME: error codes maybe? */ | |
472 | edac_printk(KERN_DEBUG, EDAC_MC, | |
052dfb45 DT |
473 | "Scrub rate set FAILED, could not apply: %d\n", |
474 | bandwidth); | |
7c9281d7 DT |
475 | } |
476 | } else { | |
477 | /* FIXME: produce "not implemented" ERROR for user-side. */ | |
478 | edac_printk(KERN_WARNING, EDAC_MC, | |
052dfb45 | 479 | "Memory scrubbing 'set'control is not implemented!\n"); |
7c9281d7 DT |
480 | } |
481 | return count; | |
482 | } | |
483 | ||
484 | static ssize_t mci_sdram_scrub_rate_show(struct mem_ctl_info *mci, char *data) | |
485 | { | |
486 | u32 bandwidth = -1; | |
487 | ||
488 | if (mci->get_sdram_scrub_rate) { | |
079708b9 | 489 | if (!(*mci->get_sdram_scrub_rate) (mci, &bandwidth)) { |
7c9281d7 | 490 | edac_printk(KERN_DEBUG, EDAC_MC, |
052dfb45 DT |
491 | "Scrub rate successfully, fetched: %d\n", |
492 | bandwidth); | |
7c9281d7 DT |
493 | } else { |
494 | /* FIXME: error codes maybe? */ | |
495 | edac_printk(KERN_DEBUG, EDAC_MC, | |
052dfb45 DT |
496 | "Scrub rate fetch FAILED, got: %d\n", |
497 | bandwidth); | |
7c9281d7 DT |
498 | } |
499 | } else { | |
500 | /* FIXME: produce "not implemented" ERROR for user-side. */ | |
501 | edac_printk(KERN_WARNING, EDAC_MC, | |
052dfb45 | 502 | "Memory scrubbing 'get' control is not implemented\n"); |
7c9281d7 DT |
503 | } |
504 | return sprintf(data, "%d\n", bandwidth); | |
505 | } | |
506 | ||
507 | /* default attribute files for the MCI object */ | |
508 | static ssize_t mci_ue_count_show(struct mem_ctl_info *mci, char *data) | |
509 | { | |
079708b9 | 510 | return sprintf(data, "%d\n", mci->ue_count); |
7c9281d7 DT |
511 | } |
512 | ||
513 | static ssize_t mci_ce_count_show(struct mem_ctl_info *mci, char *data) | |
514 | { | |
079708b9 | 515 | return sprintf(data, "%d\n", mci->ce_count); |
7c9281d7 DT |
516 | } |
517 | ||
518 | static ssize_t mci_ce_noinfo_show(struct mem_ctl_info *mci, char *data) | |
519 | { | |
079708b9 | 520 | return sprintf(data, "%d\n", mci->ce_noinfo_count); |
7c9281d7 DT |
521 | } |
522 | ||
523 | static ssize_t mci_ue_noinfo_show(struct mem_ctl_info *mci, char *data) | |
524 | { | |
079708b9 | 525 | return sprintf(data, "%d\n", mci->ue_noinfo_count); |
7c9281d7 DT |
526 | } |
527 | ||
528 | static ssize_t mci_seconds_show(struct mem_ctl_info *mci, char *data) | |
529 | { | |
079708b9 | 530 | return sprintf(data, "%ld\n", (jiffies - mci->start_time) / HZ); |
7c9281d7 DT |
531 | } |
532 | ||
533 | static ssize_t mci_ctl_name_show(struct mem_ctl_info *mci, char *data) | |
534 | { | |
079708b9 | 535 | return sprintf(data, "%s\n", mci->ctl_name); |
7c9281d7 DT |
536 | } |
537 | ||
538 | static ssize_t mci_size_mb_show(struct mem_ctl_info *mci, char *data) | |
539 | { | |
540 | int total_pages, csrow_idx; | |
541 | ||
542 | for (total_pages = csrow_idx = 0; csrow_idx < mci->nr_csrows; | |
052dfb45 | 543 | csrow_idx++) { |
7c9281d7 DT |
544 | struct csrow_info *csrow = &mci->csrows[csrow_idx]; |
545 | ||
546 | if (!csrow->nr_pages) | |
547 | continue; | |
548 | ||
549 | total_pages += csrow->nr_pages; | |
550 | } | |
551 | ||
079708b9 | 552 | return sprintf(data, "%u\n", PAGES_TO_MiB(total_pages)); |
7c9281d7 DT |
553 | } |
554 | ||
7c9281d7 | 555 | #define to_mci(k) container_of(k, struct mem_ctl_info, edac_mci_kobj) |
42a8e397 | 556 | #define to_mcidev_attr(a) container_of(a,struct mcidev_sysfs_attribute,attr) |
7c9281d7 DT |
557 | |
558 | /* MCI show/store functions for top most object */ | |
559 | static ssize_t mcidev_show(struct kobject *kobj, struct attribute *attr, | |
052dfb45 | 560 | char *buffer) |
7c9281d7 DT |
561 | { |
562 | struct mem_ctl_info *mem_ctl_info = to_mci(kobj); | |
42a8e397 | 563 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); |
7c9281d7 DT |
564 | |
565 | if (mcidev_attr->show) | |
566 | return mcidev_attr->show(mem_ctl_info, buffer); | |
567 | ||
568 | return -EIO; | |
569 | } | |
570 | ||
571 | static ssize_t mcidev_store(struct kobject *kobj, struct attribute *attr, | |
052dfb45 | 572 | const char *buffer, size_t count) |
7c9281d7 DT |
573 | { |
574 | struct mem_ctl_info *mem_ctl_info = to_mci(kobj); | |
42a8e397 | 575 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); |
7c9281d7 DT |
576 | |
577 | if (mcidev_attr->store) | |
578 | return mcidev_attr->store(mem_ctl_info, buffer, count); | |
579 | ||
580 | return -EIO; | |
581 | } | |
582 | ||
8096cfaf | 583 | /* Intermediate show/store table */ |
7c9281d7 DT |
584 | static struct sysfs_ops mci_ops = { |
585 | .show = mcidev_show, | |
586 | .store = mcidev_store | |
587 | }; | |
588 | ||
589 | #define MCIDEV_ATTR(_name,_mode,_show,_store) \ | |
42a8e397 | 590 | static struct mcidev_sysfs_attribute mci_attr_##_name = { \ |
7c9281d7 DT |
591 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
592 | .show = _show, \ | |
593 | .store = _store, \ | |
594 | }; | |
595 | ||
596 | /* default Control file */ | |
079708b9 | 597 | MCIDEV_ATTR(reset_counters, S_IWUSR, NULL, mci_reset_counters_store); |
7c9281d7 DT |
598 | |
599 | /* default Attribute files */ | |
079708b9 DT |
600 | MCIDEV_ATTR(mc_name, S_IRUGO, mci_ctl_name_show, NULL); |
601 | MCIDEV_ATTR(size_mb, S_IRUGO, mci_size_mb_show, NULL); | |
602 | MCIDEV_ATTR(seconds_since_reset, S_IRUGO, mci_seconds_show, NULL); | |
603 | MCIDEV_ATTR(ue_noinfo_count, S_IRUGO, mci_ue_noinfo_show, NULL); | |
604 | MCIDEV_ATTR(ce_noinfo_count, S_IRUGO, mci_ce_noinfo_show, NULL); | |
605 | MCIDEV_ATTR(ue_count, S_IRUGO, mci_ue_count_show, NULL); | |
606 | MCIDEV_ATTR(ce_count, S_IRUGO, mci_ce_count_show, NULL); | |
7c9281d7 DT |
607 | |
608 | /* memory scrubber attribute file */ | |
079708b9 | 609 | MCIDEV_ATTR(sdram_scrub_rate, S_IRUGO | S_IWUSR, mci_sdram_scrub_rate_show, |
052dfb45 | 610 | mci_sdram_scrub_rate_store); |
7c9281d7 | 611 | |
42a8e397 | 612 | static struct mcidev_sysfs_attribute *mci_attr[] = { |
7c9281d7 DT |
613 | &mci_attr_reset_counters, |
614 | &mci_attr_mc_name, | |
615 | &mci_attr_size_mb, | |
616 | &mci_attr_seconds_since_reset, | |
617 | &mci_attr_ue_noinfo_count, | |
618 | &mci_attr_ce_noinfo_count, | |
619 | &mci_attr_ue_count, | |
620 | &mci_attr_ce_count, | |
621 | &mci_attr_sdram_scrub_rate, | |
622 | NULL | |
623 | }; | |
624 | ||
8096cfaf | 625 | |
7c9281d7 DT |
626 | /* |
627 | * Release of a MC controlling instance | |
8096cfaf DT |
628 | * |
629 | * each MC control instance has the following resources upon entry: | |
630 | * a) a ref count on the top memctl kobj | |
631 | * b) a ref count on this module | |
632 | * | |
633 | * this function must decrement those ref counts and then | |
634 | * issue a free on the instance's memory | |
7c9281d7 | 635 | */ |
8096cfaf | 636 | static void edac_mci_control_release(struct kobject *kobj) |
7c9281d7 DT |
637 | { |
638 | struct mem_ctl_info *mci; | |
639 | ||
640 | mci = to_mci(kobj); | |
8096cfaf DT |
641 | |
642 | debugf0("%s() mci instance idx=%d releasing\n", __func__, mci->mc_idx); | |
643 | ||
644 | /* decrement the module ref count */ | |
645 | module_put(mci->owner); | |
646 | ||
647 | /* free the mci instance memory here */ | |
648 | kfree(mci); | |
7c9281d7 DT |
649 | } |
650 | ||
651 | static struct kobj_type ktype_mci = { | |
8096cfaf | 652 | .release = edac_mci_control_release, |
7c9281d7 | 653 | .sysfs_ops = &mci_ops, |
079708b9 | 654 | .default_attrs = (struct attribute **)mci_attr, |
7c9281d7 DT |
655 | }; |
656 | ||
8096cfaf DT |
657 | /* show/store, tables, etc for the MC kset */ |
658 | ||
659 | ||
660 | struct memctrl_dev_attribute { | |
661 | struct attribute attr; | |
662 | void *value; | |
663 | ssize_t(*show) (void *, char *); | |
664 | ssize_t(*store) (void *, const char *, size_t); | |
665 | }; | |
666 | ||
667 | /* Set of show/store abstract level functions for memory control object */ | |
668 | static ssize_t memctrl_dev_show(struct kobject *kobj, | |
669 | struct attribute *attr, char *buffer) | |
670 | { | |
671 | struct memctrl_dev_attribute *memctrl_dev; | |
672 | memctrl_dev = (struct memctrl_dev_attribute *)attr; | |
673 | ||
674 | if (memctrl_dev->show) | |
675 | return memctrl_dev->show(memctrl_dev->value, buffer); | |
676 | ||
677 | return -EIO; | |
678 | } | |
679 | ||
680 | static ssize_t memctrl_dev_store(struct kobject *kobj, struct attribute *attr, | |
681 | const char *buffer, size_t count) | |
682 | { | |
683 | struct memctrl_dev_attribute *memctrl_dev; | |
684 | memctrl_dev = (struct memctrl_dev_attribute *)attr; | |
685 | ||
686 | if (memctrl_dev->store) | |
687 | return memctrl_dev->store(memctrl_dev->value, buffer, count); | |
688 | ||
689 | return -EIO; | |
690 | } | |
691 | ||
692 | static struct sysfs_ops memctrlfs_ops = { | |
693 | .show = memctrl_dev_show, | |
694 | .store = memctrl_dev_store | |
695 | }; | |
696 | ||
697 | #define MEMCTRL_ATTR(_name, _mode, _show, _store) \ | |
698 | static struct memctrl_dev_attribute attr_##_name = { \ | |
699 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
700 | .value = &_name, \ | |
701 | .show = _show, \ | |
702 | .store = _store, \ | |
703 | }; | |
704 | ||
705 | #define MEMCTRL_STRING_ATTR(_name, _data, _mode, _show, _store) \ | |
706 | static struct memctrl_dev_attribute attr_##_name = { \ | |
707 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
708 | .value = _data, \ | |
709 | .show = _show, \ | |
710 | .store = _store, \ | |
711 | }; | |
712 | ||
713 | /* csrow<id> control files */ | |
714 | MEMCTRL_ATTR(edac_mc_panic_on_ue, | |
715 | S_IRUGO | S_IWUSR, memctrl_int_show, memctrl_int_store); | |
716 | ||
717 | MEMCTRL_ATTR(edac_mc_log_ue, | |
718 | S_IRUGO | S_IWUSR, memctrl_int_show, memctrl_int_store); | |
719 | ||
720 | MEMCTRL_ATTR(edac_mc_log_ce, | |
721 | S_IRUGO | S_IWUSR, memctrl_int_show, memctrl_int_store); | |
722 | ||
723 | MEMCTRL_ATTR(edac_mc_poll_msec, | |
bce19683 | 724 | S_IRUGO | S_IWUSR, memctrl_int_show, poll_msec_int_store); |
8096cfaf DT |
725 | |
726 | /* Base Attributes of the memory ECC object */ | |
727 | static struct memctrl_dev_attribute *memctrl_attr[] = { | |
728 | &attr_edac_mc_panic_on_ue, | |
729 | &attr_edac_mc_log_ue, | |
730 | &attr_edac_mc_log_ce, | |
731 | &attr_edac_mc_poll_msec, | |
732 | NULL, | |
733 | }; | |
734 | ||
735 | ||
736 | /* the ktype for the mc_kset internal kobj */ | |
737 | static struct kobj_type ktype_mc_set_attribs = { | |
738 | .sysfs_ops = &memctrlfs_ops, | |
739 | .default_attrs = (struct attribute **)memctrl_attr, | |
740 | }; | |
741 | ||
742 | /* EDAC memory controller sysfs kset: | |
743 | * /sys/devices/system/edac/mc | |
744 | */ | |
745 | static struct kset mc_kset = { | |
34980ca8 | 746 | .kobj = {.ktype = &ktype_mc_set_attribs }, |
8096cfaf DT |
747 | }; |
748 | ||
749 | ||
750 | /* | |
751 | * edac_mc_register_sysfs_main_kobj | |
752 | * | |
753 | * setups and registers the main kobject for each mci | |
754 | */ | |
755 | int edac_mc_register_sysfs_main_kobj(struct mem_ctl_info *mci) | |
756 | { | |
757 | struct kobject *kobj_mci; | |
758 | int err; | |
759 | ||
760 | debugf1("%s()\n", __func__); | |
761 | ||
762 | kobj_mci = &mci->edac_mci_kobj; | |
763 | ||
764 | /* Init the mci's kobject */ | |
765 | memset(kobj_mci, 0, sizeof(*kobj_mci)); | |
766 | ||
767 | /* this instance become part of the mc_kset */ | |
768 | kobj_mci->kset = &mc_kset; | |
3514faca | 769 | kobj_mci->ktype = &ktype_mci; |
8096cfaf DT |
770 | |
771 | /* set the name of the mc<id> object */ | |
772 | err = kobject_set_name(kobj_mci, "mc%d", mci->mc_idx); | |
773 | if (err) | |
774 | goto fail_out; | |
775 | ||
776 | /* Record which module 'owns' this control structure | |
777 | * and bump the ref count of the module | |
778 | */ | |
779 | mci->owner = THIS_MODULE; | |
780 | ||
781 | /* bump ref count on this module */ | |
782 | if (!try_module_get(mci->owner)) { | |
783 | err = -ENODEV; | |
784 | goto fail_out; | |
785 | } | |
786 | ||
787 | /* register the mc<id> kobject to the mc_kset */ | |
788 | err = kobject_register(kobj_mci); | |
789 | if (err) { | |
790 | debugf1("%s()Failed to register '.../edac/mc%d'\n", | |
791 | __func__, mci->mc_idx); | |
792 | goto kobj_reg_fail; | |
793 | } | |
794 | ||
795 | /* At this point, to 'free' the control struct, | |
796 | * edac_mc_unregister_sysfs_main_kobj() must be used | |
797 | */ | |
798 | ||
799 | debugf1("%s() Registered '.../edac/mc%d' kobject\n", | |
800 | __func__, mci->mc_idx); | |
801 | ||
802 | return 0; | |
803 | ||
804 | /* Error exit stack */ | |
805 | ||
806 | kobj_reg_fail: | |
807 | module_put(mci->owner); | |
808 | ||
809 | fail_out: | |
810 | return err; | |
811 | } | |
812 | ||
813 | /* | |
814 | * edac_mc_register_sysfs_main_kobj | |
815 | * | |
816 | * tears down and the main mci kobject from the mc_kset | |
817 | */ | |
818 | void edac_mc_unregister_sysfs_main_kobj(struct mem_ctl_info *mci) | |
819 | { | |
820 | /* delete the kobj from the mc_kset */ | |
821 | kobject_unregister(&mci->edac_mci_kobj); | |
822 | } | |
823 | ||
7c9281d7 DT |
824 | #define EDAC_DEVICE_SYMLINK "device" |
825 | ||
42a8e397 | 826 | /* |
8096cfaf | 827 | * edac_create_mci_instance_attributes |
42a8e397 DT |
828 | * create MC driver specific attributes at the topmost level |
829 | * directory of this mci instance. | |
830 | */ | |
8096cfaf | 831 | static int edac_create_mci_instance_attributes(struct mem_ctl_info *mci) |
42a8e397 DT |
832 | { |
833 | int err; | |
834 | struct mcidev_sysfs_attribute *sysfs_attrib; | |
835 | ||
836 | /* point to the start of the array and iterate over it | |
837 | * adding each attribute listed to this mci instance's kobject | |
838 | */ | |
839 | sysfs_attrib = mci->mc_driver_sysfs_attributes; | |
840 | ||
8096cfaf | 841 | while (sysfs_attrib && sysfs_attrib->attr.name) { |
42a8e397 DT |
842 | err = sysfs_create_file(&mci->edac_mci_kobj, |
843 | (struct attribute*) sysfs_attrib); | |
844 | if (err) { | |
845 | return err; | |
846 | } | |
847 | ||
848 | sysfs_attrib++; | |
849 | } | |
850 | ||
851 | return 0; | |
852 | } | |
853 | ||
8096cfaf DT |
854 | /* |
855 | * edac_remove_mci_instance_attributes | |
856 | * remove MC driver specific attributes at the topmost level | |
857 | * directory of this mci instance. | |
858 | */ | |
859 | static void edac_remove_mci_instance_attributes(struct mem_ctl_info *mci) | |
860 | { | |
861 | struct mcidev_sysfs_attribute *sysfs_attrib; | |
862 | ||
863 | /* point to the start of the array and iterate over it | |
864 | * adding each attribute listed to this mci instance's kobject | |
865 | */ | |
866 | sysfs_attrib = mci->mc_driver_sysfs_attributes; | |
867 | ||
868 | /* loop if there are attributes and until we hit a NULL entry */ | |
869 | while (sysfs_attrib && sysfs_attrib->attr.name) { | |
870 | sysfs_remove_file(&mci->edac_mci_kobj, | |
871 | (struct attribute *) sysfs_attrib); | |
872 | sysfs_attrib++; | |
873 | } | |
874 | } | |
875 | ||
876 | ||
7c9281d7 DT |
877 | /* |
878 | * Create a new Memory Controller kobject instance, | |
879 | * mc<id> under the 'mc' directory | |
880 | * | |
881 | * Return: | |
882 | * 0 Success | |
883 | * !0 Failure | |
884 | */ | |
885 | int edac_create_sysfs_mci_device(struct mem_ctl_info *mci) | |
886 | { | |
887 | int i; | |
888 | int err; | |
889 | struct csrow_info *csrow; | |
8096cfaf | 890 | struct kobject *kobj_mci = &mci->edac_mci_kobj; |
7c9281d7 DT |
891 | |
892 | debugf0("%s() idx=%d\n", __func__, mci->mc_idx); | |
7c9281d7 DT |
893 | |
894 | /* create a symlink for the device */ | |
8096cfaf | 895 | err = sysfs_create_link(kobj_mci, &mci->dev->kobj, |
7c9281d7 | 896 | EDAC_DEVICE_SYMLINK); |
8096cfaf DT |
897 | if (err) { |
898 | debugf1("%s() failure to create symlink\n", __func__); | |
7c9281d7 | 899 | goto fail0; |
8096cfaf | 900 | } |
7c9281d7 | 901 | |
42a8e397 DT |
902 | /* If the low level driver desires some attributes, |
903 | * then create them now for the driver. | |
904 | */ | |
905 | if (mci->mc_driver_sysfs_attributes) { | |
8096cfaf DT |
906 | err = edac_create_mci_instance_attributes(mci); |
907 | if (err) { | |
908 | debugf1("%s() failure to create mci attributes\n", | |
909 | __func__); | |
42a8e397 | 910 | goto fail0; |
8096cfaf | 911 | } |
42a8e397 DT |
912 | } |
913 | ||
8096cfaf | 914 | /* Make directories for each CSROW object under the mc<id> kobject |
7c9281d7 DT |
915 | */ |
916 | for (i = 0; i < mci->nr_csrows; i++) { | |
917 | csrow = &mci->csrows[i]; | |
918 | ||
919 | /* Only expose populated CSROWs */ | |
920 | if (csrow->nr_pages > 0) { | |
8096cfaf DT |
921 | err = edac_create_csrow_object(mci, csrow, i); |
922 | if (err) { | |
923 | debugf1("%s() failure: create csrow %d obj\n", | |
924 | __func__, i); | |
7c9281d7 | 925 | goto fail1; |
8096cfaf | 926 | } |
7c9281d7 DT |
927 | } |
928 | } | |
929 | ||
930 | return 0; | |
931 | ||
932 | /* CSROW error: backout what has already been registered, */ | |
052dfb45 | 933 | fail1: |
079708b9 | 934 | for (i--; i >= 0; i--) { |
7c9281d7 | 935 | if (csrow->nr_pages > 0) { |
7c9281d7 | 936 | kobject_unregister(&mci->csrows[i].kobj); |
7c9281d7 DT |
937 | } |
938 | } | |
939 | ||
8096cfaf DT |
940 | /* remove the mci instance's attributes, if any */ |
941 | edac_remove_mci_instance_attributes(mci); | |
942 | ||
943 | /* remove the symlink */ | |
944 | sysfs_remove_link(kobj_mci, EDAC_DEVICE_SYMLINK); | |
945 | ||
052dfb45 | 946 | fail0: |
7c9281d7 DT |
947 | return err; |
948 | } | |
949 | ||
950 | /* | |
951 | * remove a Memory Controller instance | |
952 | */ | |
953 | void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) | |
954 | { | |
955 | int i; | |
956 | ||
957 | debugf0("%s()\n", __func__); | |
958 | ||
959 | /* remove all csrow kobjects */ | |
960 | for (i = 0; i < mci->nr_csrows; i++) { | |
961 | if (mci->csrows[i].nr_pages > 0) { | |
8096cfaf | 962 | debugf0("%s() unreg csrow-%d\n", __func__, i); |
7c9281d7 | 963 | kobject_unregister(&mci->csrows[i].kobj); |
7c9281d7 DT |
964 | } |
965 | } | |
966 | ||
8096cfaf DT |
967 | debugf0("%s() remove_link\n", __func__); |
968 | ||
969 | /* remove the symlink */ | |
7c9281d7 | 970 | sysfs_remove_link(&mci->edac_mci_kobj, EDAC_DEVICE_SYMLINK); |
8096cfaf DT |
971 | |
972 | debugf0("%s() remove_mci_instance\n", __func__); | |
973 | ||
974 | /* remove this mci instance's attribtes */ | |
975 | edac_remove_mci_instance_attributes(mci); | |
976 | ||
977 | debugf0("%s() unregister this mci kobj\n", __func__); | |
978 | ||
979 | /* unregister this instance's kobject */ | |
7c9281d7 | 980 | kobject_unregister(&mci->edac_mci_kobj); |
7c9281d7 | 981 | } |
8096cfaf DT |
982 | |
983 | ||
984 | ||
985 | ||
986 | /* | |
987 | * edac_setup_sysfs_mc_kset(void) | |
988 | * | |
989 | * Initialize the mc_kset for the 'mc' entry | |
990 | * This requires creating the top 'mc' directory with a kset | |
991 | * and its controls/attributes. | |
992 | * | |
993 | * To this 'mc' kset, instance 'mci' will be grouped as children. | |
994 | * | |
995 | * Return: 0 SUCCESS | |
996 | * !0 FAILURE error code | |
997 | */ | |
998 | int edac_sysfs_setup_mc_kset(void) | |
999 | { | |
1000 | int err = 0; | |
1001 | struct sysdev_class *edac_class; | |
1002 | ||
1003 | debugf1("%s()\n", __func__); | |
1004 | ||
1005 | /* get the /sys/devices/system/edac class reference */ | |
1006 | edac_class = edac_get_edac_class(); | |
1007 | if (edac_class == NULL) { | |
1008 | debugf1("%s() no edac_class error=%d\n", __func__, err); | |
1009 | goto fail_out; | |
1010 | } | |
1011 | ||
1012 | /* Init the MC's kobject */ | |
34980ca8 | 1013 | kobject_set_name(&mc_kset.kobj, "mc"); |
8096cfaf DT |
1014 | mc_kset.kobj.parent = &edac_class->kset.kobj; |
1015 | ||
1016 | /* register the mc_kset */ | |
1017 | err = kset_register(&mc_kset); | |
1018 | if (err) { | |
1019 | debugf1("%s() Failed to register '.../edac/mc'\n", __func__); | |
1020 | goto fail_out; | |
1021 | } | |
1022 | ||
1023 | debugf1("%s() Registered '.../edac/mc' kobject\n", __func__); | |
1024 | ||
1025 | return 0; | |
1026 | ||
1027 | ||
1028 | /* error unwind stack */ | |
1029 | fail_out: | |
1030 | return err; | |
1031 | } | |
1032 | ||
1033 | /* | |
1034 | * edac_sysfs_teardown_mc_kset | |
1035 | * | |
1036 | * deconstruct the mc_ket for memory controllers | |
1037 | */ | |
1038 | void edac_sysfs_teardown_mc_kset(void) | |
1039 | { | |
1040 | kset_unregister(&mc_kset); | |
1041 | } | |
1042 |