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> |
5a0e3ad6 | 13 | #include <linux/slab.h> |
8096cfaf | 14 | #include <linux/bug.h> |
7c9281d7 | 15 | |
20bcb7a8 | 16 | #include "edac_core.h" |
7c9281d7 DT |
17 | #include "edac_module.h" |
18 | ||
8096cfaf | 19 | |
7c9281d7 | 20 | /* MC EDAC Controls, setable by module parameter, and sysfs */ |
4de78c68 DJ |
21 | static int edac_mc_log_ue = 1; |
22 | static int edac_mc_log_ce = 1; | |
f044091c | 23 | static int edac_mc_panic_on_ue; |
4de78c68 | 24 | static int edac_mc_poll_msec = 1000; |
7c9281d7 DT |
25 | |
26 | /* Getter functions for above */ | |
4de78c68 | 27 | int edac_mc_get_log_ue(void) |
7c9281d7 | 28 | { |
4de78c68 | 29 | return edac_mc_log_ue; |
7c9281d7 DT |
30 | } |
31 | ||
4de78c68 | 32 | int edac_mc_get_log_ce(void) |
7c9281d7 | 33 | { |
4de78c68 | 34 | return edac_mc_log_ce; |
7c9281d7 DT |
35 | } |
36 | ||
4de78c68 | 37 | int edac_mc_get_panic_on_ue(void) |
7c9281d7 | 38 | { |
4de78c68 | 39 | return edac_mc_panic_on_ue; |
7c9281d7 DT |
40 | } |
41 | ||
81d87cb1 DJ |
42 | /* this is temporary */ |
43 | int edac_mc_get_poll_msec(void) | |
44 | { | |
4de78c68 | 45 | return edac_mc_poll_msec; |
7c9281d7 DT |
46 | } |
47 | ||
096846e2 AJ |
48 | static int edac_set_poll_msec(const char *val, struct kernel_param *kp) |
49 | { | |
50 | long l; | |
51 | int ret; | |
52 | ||
53 | if (!val) | |
54 | return -EINVAL; | |
55 | ||
56 | ret = strict_strtol(val, 0, &l); | |
57 | if (ret == -EINVAL || ((int)l != l)) | |
58 | return -EINVAL; | |
59 | *((int *)kp->arg) = l; | |
60 | ||
61 | /* notify edac_mc engine to reset the poll period */ | |
62 | edac_mc_reset_delay_period(l); | |
63 | ||
64 | return 0; | |
65 | } | |
66 | ||
7c9281d7 | 67 | /* Parameter declarations for above */ |
4de78c68 DJ |
68 | module_param(edac_mc_panic_on_ue, int, 0644); |
69 | MODULE_PARM_DESC(edac_mc_panic_on_ue, "Panic on uncorrected error: 0=off 1=on"); | |
70 | module_param(edac_mc_log_ue, int, 0644); | |
71 | MODULE_PARM_DESC(edac_mc_log_ue, | |
079708b9 | 72 | "Log uncorrectable error to console: 0=off 1=on"); |
4de78c68 DJ |
73 | module_param(edac_mc_log_ce, int, 0644); |
74 | MODULE_PARM_DESC(edac_mc_log_ce, | |
079708b9 | 75 | "Log correctable error to console: 0=off 1=on"); |
096846e2 AJ |
76 | module_param_call(edac_mc_poll_msec, edac_set_poll_msec, param_get_int, |
77 | &edac_mc_poll_msec, 0644); | |
4de78c68 | 78 | MODULE_PARM_DESC(edac_mc_poll_msec, "Polling period in milliseconds"); |
7c9281d7 | 79 | |
7c9281d7 DT |
80 | /* |
81 | * various constants for Memory Controllers | |
82 | */ | |
83 | static const char *mem_types[] = { | |
84 | [MEM_EMPTY] = "Empty", | |
85 | [MEM_RESERVED] = "Reserved", | |
86 | [MEM_UNKNOWN] = "Unknown", | |
87 | [MEM_FPM] = "FPM", | |
88 | [MEM_EDO] = "EDO", | |
89 | [MEM_BEDO] = "BEDO", | |
90 | [MEM_SDR] = "Unbuffered-SDR", | |
91 | [MEM_RDR] = "Registered-SDR", | |
92 | [MEM_DDR] = "Unbuffered-DDR", | |
93 | [MEM_RDDR] = "Registered-DDR", | |
1a9b85e6 DJ |
94 | [MEM_RMBS] = "RMBS", |
95 | [MEM_DDR2] = "Unbuffered-DDR2", | |
96 | [MEM_FB_DDR2] = "FullyBuffered-DDR2", | |
1d5f726c | 97 | [MEM_RDDR2] = "Registered-DDR2", |
b1cfebc9 YS |
98 | [MEM_XDR] = "XDR", |
99 | [MEM_DDR3] = "Unbuffered-DDR3", | |
100 | [MEM_RDDR3] = "Registered-DDR3" | |
7c9281d7 DT |
101 | }; |
102 | ||
103 | static const char *dev_types[] = { | |
104 | [DEV_UNKNOWN] = "Unknown", | |
105 | [DEV_X1] = "x1", | |
106 | [DEV_X2] = "x2", | |
107 | [DEV_X4] = "x4", | |
108 | [DEV_X8] = "x8", | |
109 | [DEV_X16] = "x16", | |
110 | [DEV_X32] = "x32", | |
111 | [DEV_X64] = "x64" | |
112 | }; | |
113 | ||
114 | static const char *edac_caps[] = { | |
115 | [EDAC_UNKNOWN] = "Unknown", | |
116 | [EDAC_NONE] = "None", | |
117 | [EDAC_RESERVED] = "Reserved", | |
118 | [EDAC_PARITY] = "PARITY", | |
119 | [EDAC_EC] = "EC", | |
120 | [EDAC_SECDED] = "SECDED", | |
121 | [EDAC_S2ECD2ED] = "S2ECD2ED", | |
122 | [EDAC_S4ECD4ED] = "S4ECD4ED", | |
123 | [EDAC_S8ECD8ED] = "S8ECD8ED", | |
124 | [EDAC_S16ECD16ED] = "S16ECD16ED" | |
125 | }; | |
126 | ||
7c9281d7 DT |
127 | /* EDAC sysfs CSROW data structures and methods |
128 | */ | |
129 | ||
130 | /* Set of more default csrow<id> attribute show/store functions */ | |
e27e3dac | 131 | static ssize_t csrow_ue_count_show(struct csrow_info *csrow, char *data, |
052dfb45 | 132 | int private) |
7c9281d7 | 133 | { |
079708b9 | 134 | return sprintf(data, "%u\n", csrow->ue_count); |
7c9281d7 DT |
135 | } |
136 | ||
e27e3dac | 137 | static ssize_t csrow_ce_count_show(struct csrow_info *csrow, char *data, |
052dfb45 | 138 | int private) |
7c9281d7 | 139 | { |
079708b9 | 140 | return sprintf(data, "%u\n", csrow->ce_count); |
7c9281d7 DT |
141 | } |
142 | ||
e27e3dac | 143 | static ssize_t csrow_size_show(struct csrow_info *csrow, char *data, |
052dfb45 | 144 | int private) |
7c9281d7 | 145 | { |
079708b9 | 146 | return sprintf(data, "%u\n", PAGES_TO_MiB(csrow->nr_pages)); |
7c9281d7 DT |
147 | } |
148 | ||
e27e3dac | 149 | static ssize_t csrow_mem_type_show(struct csrow_info *csrow, char *data, |
052dfb45 | 150 | int private) |
7c9281d7 | 151 | { |
079708b9 | 152 | return sprintf(data, "%s\n", mem_types[csrow->mtype]); |
7c9281d7 DT |
153 | } |
154 | ||
e27e3dac | 155 | static ssize_t csrow_dev_type_show(struct csrow_info *csrow, char *data, |
052dfb45 | 156 | int private) |
7c9281d7 | 157 | { |
079708b9 | 158 | return sprintf(data, "%s\n", dev_types[csrow->dtype]); |
7c9281d7 DT |
159 | } |
160 | ||
e27e3dac | 161 | static ssize_t csrow_edac_mode_show(struct csrow_info *csrow, char *data, |
052dfb45 | 162 | int private) |
7c9281d7 | 163 | { |
079708b9 | 164 | return sprintf(data, "%s\n", edac_caps[csrow->edac_mode]); |
7c9281d7 DT |
165 | } |
166 | ||
167 | /* show/store functions for DIMM Label attributes */ | |
168 | static ssize_t channel_dimm_label_show(struct csrow_info *csrow, | |
052dfb45 | 169 | char *data, int channel) |
7c9281d7 | 170 | { |
124682c7 AJ |
171 | /* if field has not been initialized, there is nothing to send */ |
172 | if (!csrow->channels[channel].label[0]) | |
173 | return 0; | |
174 | ||
175 | return snprintf(data, EDAC_MC_LABEL_LEN, "%s\n", | |
7c9281d7 DT |
176 | csrow->channels[channel].label); |
177 | } | |
178 | ||
179 | static ssize_t channel_dimm_label_store(struct csrow_info *csrow, | |
079708b9 DT |
180 | const char *data, |
181 | size_t count, int channel) | |
7c9281d7 DT |
182 | { |
183 | ssize_t max_size = 0; | |
184 | ||
079708b9 | 185 | max_size = min((ssize_t) count, (ssize_t) EDAC_MC_LABEL_LEN - 1); |
7c9281d7 DT |
186 | strncpy(csrow->channels[channel].label, data, max_size); |
187 | csrow->channels[channel].label[max_size] = '\0'; | |
188 | ||
189 | return max_size; | |
190 | } | |
191 | ||
192 | /* show function for dynamic chX_ce_count attribute */ | |
193 | static ssize_t channel_ce_count_show(struct csrow_info *csrow, | |
052dfb45 | 194 | char *data, int channel) |
7c9281d7 DT |
195 | { |
196 | return sprintf(data, "%u\n", csrow->channels[channel].ce_count); | |
197 | } | |
198 | ||
199 | /* csrow specific attribute structure */ | |
200 | struct csrowdev_attribute { | |
201 | struct attribute attr; | |
079708b9 DT |
202 | ssize_t(*show) (struct csrow_info *, char *, int); |
203 | ssize_t(*store) (struct csrow_info *, const char *, size_t, int); | |
204 | int private; | |
7c9281d7 DT |
205 | }; |
206 | ||
207 | #define to_csrow(k) container_of(k, struct csrow_info, kobj) | |
208 | #define to_csrowdev_attr(a) container_of(a, struct csrowdev_attribute, attr) | |
209 | ||
210 | /* Set of show/store higher level functions for default csrow attributes */ | |
211 | static ssize_t csrowdev_show(struct kobject *kobj, | |
052dfb45 | 212 | struct attribute *attr, char *buffer) |
7c9281d7 DT |
213 | { |
214 | struct csrow_info *csrow = to_csrow(kobj); | |
215 | struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr); | |
216 | ||
217 | if (csrowdev_attr->show) | |
218 | return csrowdev_attr->show(csrow, | |
052dfb45 | 219 | buffer, csrowdev_attr->private); |
7c9281d7 DT |
220 | return -EIO; |
221 | } | |
222 | ||
223 | static ssize_t csrowdev_store(struct kobject *kobj, struct attribute *attr, | |
052dfb45 | 224 | const char *buffer, size_t count) |
7c9281d7 DT |
225 | { |
226 | struct csrow_info *csrow = to_csrow(kobj); | |
079708b9 | 227 | struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr); |
7c9281d7 DT |
228 | |
229 | if (csrowdev_attr->store) | |
230 | return csrowdev_attr->store(csrow, | |
052dfb45 DT |
231 | buffer, |
232 | count, csrowdev_attr->private); | |
7c9281d7 DT |
233 | return -EIO; |
234 | } | |
235 | ||
52cf25d0 | 236 | static const struct sysfs_ops csrowfs_ops = { |
079708b9 DT |
237 | .show = csrowdev_show, |
238 | .store = csrowdev_store | |
7c9281d7 DT |
239 | }; |
240 | ||
241 | #define CSROWDEV_ATTR(_name,_mode,_show,_store,_private) \ | |
242 | static struct csrowdev_attribute attr_##_name = { \ | |
243 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
244 | .show = _show, \ | |
245 | .store = _store, \ | |
246 | .private = _private, \ | |
247 | }; | |
248 | ||
249 | /* default cwrow<id>/attribute files */ | |
079708b9 DT |
250 | CSROWDEV_ATTR(size_mb, S_IRUGO, csrow_size_show, NULL, 0); |
251 | CSROWDEV_ATTR(dev_type, S_IRUGO, csrow_dev_type_show, NULL, 0); | |
252 | CSROWDEV_ATTR(mem_type, S_IRUGO, csrow_mem_type_show, NULL, 0); | |
253 | CSROWDEV_ATTR(edac_mode, S_IRUGO, csrow_edac_mode_show, NULL, 0); | |
254 | CSROWDEV_ATTR(ue_count, S_IRUGO, csrow_ue_count_show, NULL, 0); | |
255 | CSROWDEV_ATTR(ce_count, S_IRUGO, csrow_ce_count_show, NULL, 0); | |
7c9281d7 DT |
256 | |
257 | /* default attributes of the CSROW<id> object */ | |
258 | static struct csrowdev_attribute *default_csrow_attr[] = { | |
259 | &attr_dev_type, | |
260 | &attr_mem_type, | |
261 | &attr_edac_mode, | |
262 | &attr_size_mb, | |
263 | &attr_ue_count, | |
264 | &attr_ce_count, | |
265 | NULL, | |
266 | }; | |
267 | ||
7c9281d7 | 268 | /* possible dynamic channel DIMM Label attribute files */ |
079708b9 | 269 | CSROWDEV_ATTR(ch0_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 270 | channel_dimm_label_show, channel_dimm_label_store, 0); |
079708b9 | 271 | CSROWDEV_ATTR(ch1_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 272 | channel_dimm_label_show, channel_dimm_label_store, 1); |
079708b9 | 273 | CSROWDEV_ATTR(ch2_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 274 | channel_dimm_label_show, channel_dimm_label_store, 2); |
079708b9 | 275 | CSROWDEV_ATTR(ch3_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 276 | channel_dimm_label_show, channel_dimm_label_store, 3); |
079708b9 | 277 | CSROWDEV_ATTR(ch4_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 278 | channel_dimm_label_show, channel_dimm_label_store, 4); |
079708b9 | 279 | CSROWDEV_ATTR(ch5_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 280 | channel_dimm_label_show, channel_dimm_label_store, 5); |
7c9281d7 DT |
281 | |
282 | /* Total possible dynamic DIMM Label attribute file table */ | |
283 | static struct csrowdev_attribute *dynamic_csrow_dimm_attr[] = { | |
079708b9 DT |
284 | &attr_ch0_dimm_label, |
285 | &attr_ch1_dimm_label, | |
286 | &attr_ch2_dimm_label, | |
287 | &attr_ch3_dimm_label, | |
288 | &attr_ch4_dimm_label, | |
289 | &attr_ch5_dimm_label | |
7c9281d7 DT |
290 | }; |
291 | ||
292 | /* possible dynamic channel ce_count attribute files */ | |
079708b9 DT |
293 | CSROWDEV_ATTR(ch0_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 0); |
294 | CSROWDEV_ATTR(ch1_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 1); | |
295 | CSROWDEV_ATTR(ch2_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 2); | |
296 | CSROWDEV_ATTR(ch3_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 3); | |
297 | CSROWDEV_ATTR(ch4_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 4); | |
298 | CSROWDEV_ATTR(ch5_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 5); | |
7c9281d7 DT |
299 | |
300 | /* Total possible dynamic ce_count attribute file table */ | |
301 | static struct csrowdev_attribute *dynamic_csrow_ce_count_attr[] = { | |
079708b9 DT |
302 | &attr_ch0_ce_count, |
303 | &attr_ch1_ce_count, | |
304 | &attr_ch2_ce_count, | |
305 | &attr_ch3_ce_count, | |
306 | &attr_ch4_ce_count, | |
307 | &attr_ch5_ce_count | |
7c9281d7 DT |
308 | }; |
309 | ||
7c9281d7 DT |
310 | #define EDAC_NR_CHANNELS 6 |
311 | ||
312 | /* Create dynamic CHANNEL files, indexed by 'chan', under specifed CSROW */ | |
313 | static int edac_create_channel_files(struct kobject *kobj, int chan) | |
314 | { | |
079708b9 | 315 | int err = -ENODEV; |
7c9281d7 DT |
316 | |
317 | if (chan >= EDAC_NR_CHANNELS) | |
318 | return err; | |
319 | ||
320 | /* create the DIMM label attribute file */ | |
321 | err = sysfs_create_file(kobj, | |
079708b9 DT |
322 | (struct attribute *) |
323 | dynamic_csrow_dimm_attr[chan]); | |
7c9281d7 DT |
324 | |
325 | if (!err) { | |
326 | /* create the CE Count attribute file */ | |
327 | err = sysfs_create_file(kobj, | |
079708b9 DT |
328 | (struct attribute *) |
329 | dynamic_csrow_ce_count_attr[chan]); | |
7c9281d7 | 330 | } else { |
e27e3dac DT |
331 | debugf1("%s() dimm labels and ce_count files created", |
332 | __func__); | |
7c9281d7 DT |
333 | } |
334 | ||
335 | return err; | |
336 | } | |
337 | ||
338 | /* No memory to release for this kobj */ | |
339 | static void edac_csrow_instance_release(struct kobject *kobj) | |
340 | { | |
8096cfaf | 341 | struct mem_ctl_info *mci; |
7c9281d7 DT |
342 | struct csrow_info *cs; |
343 | ||
8096cfaf DT |
344 | debugf1("%s()\n", __func__); |
345 | ||
7c9281d7 | 346 | cs = container_of(kobj, struct csrow_info, kobj); |
8096cfaf DT |
347 | mci = cs->mci; |
348 | ||
349 | kobject_put(&mci->edac_mci_kobj); | |
7c9281d7 DT |
350 | } |
351 | ||
352 | /* the kobj_type instance for a CSROW */ | |
353 | static struct kobj_type ktype_csrow = { | |
354 | .release = edac_csrow_instance_release, | |
355 | .sysfs_ops = &csrowfs_ops, | |
079708b9 | 356 | .default_attrs = (struct attribute **)default_csrow_attr, |
7c9281d7 DT |
357 | }; |
358 | ||
359 | /* Create a CSROW object under specifed edac_mc_device */ | |
8096cfaf DT |
360 | static int edac_create_csrow_object(struct mem_ctl_info *mci, |
361 | struct csrow_info *csrow, int index) | |
7c9281d7 | 362 | { |
8096cfaf DT |
363 | struct kobject *kobj_mci = &mci->edac_mci_kobj; |
364 | struct kobject *kobj; | |
7c9281d7 | 365 | int chan; |
8096cfaf | 366 | int err; |
7c9281d7 DT |
367 | |
368 | /* generate ..../edac/mc/mc<id>/csrow<index> */ | |
8096cfaf DT |
369 | memset(&csrow->kobj, 0, sizeof(csrow->kobj)); |
370 | csrow->mci = mci; /* include container up link */ | |
8096cfaf DT |
371 | |
372 | /* bump the mci instance's kobject's ref count */ | |
373 | kobj = kobject_get(&mci->edac_mci_kobj); | |
374 | if (!kobj) { | |
375 | err = -ENODEV; | |
376 | goto err_out; | |
377 | } | |
7c9281d7 DT |
378 | |
379 | /* Instanstiate the csrow object */ | |
b2ed215a GKH |
380 | err = kobject_init_and_add(&csrow->kobj, &ktype_csrow, kobj_mci, |
381 | "csrow%d", index); | |
8096cfaf DT |
382 | if (err) |
383 | goto err_release_top_kobj; | |
384 | ||
385 | /* At this point, to release a csrow kobj, one must | |
c10997f6 | 386 | * call the kobject_put and allow that tear down |
8096cfaf DT |
387 | * to work the releasing |
388 | */ | |
389 | ||
390 | /* Create the dyanmic attribute files on this csrow, | |
391 | * namely, the DIMM labels and the channel ce_count | |
392 | */ | |
393 | for (chan = 0; chan < csrow->nr_channels; chan++) { | |
394 | err = edac_create_channel_files(&csrow->kobj, chan); | |
395 | if (err) { | |
396 | /* special case the unregister here */ | |
c10997f6 | 397 | kobject_put(&csrow->kobj); |
8096cfaf | 398 | goto err_out; |
7c9281d7 DT |
399 | } |
400 | } | |
b2ed215a | 401 | kobject_uevent(&csrow->kobj, KOBJ_ADD); |
8096cfaf DT |
402 | return 0; |
403 | ||
404 | /* error unwind stack */ | |
405 | err_release_top_kobj: | |
406 | kobject_put(&mci->edac_mci_kobj); | |
407 | ||
408 | err_out: | |
7c9281d7 DT |
409 | return err; |
410 | } | |
411 | ||
412 | /* default sysfs methods and data structures for the main MCI kobject */ | |
413 | ||
414 | static ssize_t mci_reset_counters_store(struct mem_ctl_info *mci, | |
079708b9 | 415 | const char *data, size_t count) |
7c9281d7 DT |
416 | { |
417 | int row, chan; | |
418 | ||
419 | mci->ue_noinfo_count = 0; | |
420 | mci->ce_noinfo_count = 0; | |
421 | mci->ue_count = 0; | |
422 | mci->ce_count = 0; | |
423 | ||
424 | for (row = 0; row < mci->nr_csrows; row++) { | |
425 | struct csrow_info *ri = &mci->csrows[row]; | |
426 | ||
427 | ri->ue_count = 0; | |
428 | ri->ce_count = 0; | |
429 | ||
430 | for (chan = 0; chan < ri->nr_channels; chan++) | |
431 | ri->channels[chan].ce_count = 0; | |
432 | } | |
433 | ||
434 | mci->start_time = jiffies; | |
435 | return count; | |
436 | } | |
437 | ||
438 | /* memory scrubbing */ | |
439 | static ssize_t mci_sdram_scrub_rate_store(struct mem_ctl_info *mci, | |
eba042a8 | 440 | const char *data, size_t count) |
7c9281d7 | 441 | { |
eba042a8 BP |
442 | unsigned long bandwidth = 0; |
443 | int err; | |
7c9281d7 | 444 | |
eba042a8 BP |
445 | if (!mci->set_sdram_scrub_rate) { |
446 | edac_printk(KERN_WARNING, EDAC_MC, | |
447 | "Memory scrub rate setting not implemented!\n"); | |
448 | return -EINVAL; | |
449 | } | |
7c9281d7 | 450 | |
eba042a8 BP |
451 | if (strict_strtoul(data, 10, &bandwidth) < 0) |
452 | return -EINVAL; | |
7c9281d7 | 453 | |
eba042a8 BP |
454 | err = mci->set_sdram_scrub_rate(mci, (u32)bandwidth); |
455 | if (err) { | |
456 | edac_printk(KERN_DEBUG, EDAC_MC, | |
457 | "Failed setting scrub rate to %lu\n", bandwidth); | |
458 | return -EINVAL; | |
459 | } | |
460 | else { | |
461 | edac_printk(KERN_DEBUG, EDAC_MC, | |
462 | "Scrub rate set to: %lu\n", bandwidth); | |
463 | return count; | |
7c9281d7 | 464 | } |
7c9281d7 DT |
465 | } |
466 | ||
467 | static ssize_t mci_sdram_scrub_rate_show(struct mem_ctl_info *mci, char *data) | |
468 | { | |
eba042a8 BP |
469 | u32 bandwidth = 0; |
470 | int err; | |
471 | ||
472 | if (!mci->get_sdram_scrub_rate) { | |
7c9281d7 | 473 | edac_printk(KERN_WARNING, EDAC_MC, |
eba042a8 BP |
474 | "Memory scrub rate reading not implemented\n"); |
475 | return -EINVAL; | |
476 | } | |
477 | ||
478 | err = mci->get_sdram_scrub_rate(mci, &bandwidth); | |
479 | if (err) { | |
480 | edac_printk(KERN_DEBUG, EDAC_MC, "Error reading scrub rate\n"); | |
481 | return err; | |
482 | } | |
483 | else { | |
484 | edac_printk(KERN_DEBUG, EDAC_MC, | |
485 | "Read scrub rate: %d\n", bandwidth); | |
486 | return sprintf(data, "%d\n", bandwidth); | |
7c9281d7 | 487 | } |
7c9281d7 DT |
488 | } |
489 | ||
490 | /* default attribute files for the MCI object */ | |
491 | static ssize_t mci_ue_count_show(struct mem_ctl_info *mci, char *data) | |
492 | { | |
079708b9 | 493 | return sprintf(data, "%d\n", mci->ue_count); |
7c9281d7 DT |
494 | } |
495 | ||
496 | static ssize_t mci_ce_count_show(struct mem_ctl_info *mci, char *data) | |
497 | { | |
079708b9 | 498 | return sprintf(data, "%d\n", mci->ce_count); |
7c9281d7 DT |
499 | } |
500 | ||
501 | static ssize_t mci_ce_noinfo_show(struct mem_ctl_info *mci, char *data) | |
502 | { | |
079708b9 | 503 | return sprintf(data, "%d\n", mci->ce_noinfo_count); |
7c9281d7 DT |
504 | } |
505 | ||
506 | static ssize_t mci_ue_noinfo_show(struct mem_ctl_info *mci, char *data) | |
507 | { | |
079708b9 | 508 | return sprintf(data, "%d\n", mci->ue_noinfo_count); |
7c9281d7 DT |
509 | } |
510 | ||
511 | static ssize_t mci_seconds_show(struct mem_ctl_info *mci, char *data) | |
512 | { | |
079708b9 | 513 | return sprintf(data, "%ld\n", (jiffies - mci->start_time) / HZ); |
7c9281d7 DT |
514 | } |
515 | ||
516 | static ssize_t mci_ctl_name_show(struct mem_ctl_info *mci, char *data) | |
517 | { | |
079708b9 | 518 | return sprintf(data, "%s\n", mci->ctl_name); |
7c9281d7 DT |
519 | } |
520 | ||
521 | static ssize_t mci_size_mb_show(struct mem_ctl_info *mci, char *data) | |
522 | { | |
523 | int total_pages, csrow_idx; | |
524 | ||
525 | for (total_pages = csrow_idx = 0; csrow_idx < mci->nr_csrows; | |
052dfb45 | 526 | csrow_idx++) { |
7c9281d7 DT |
527 | struct csrow_info *csrow = &mci->csrows[csrow_idx]; |
528 | ||
529 | if (!csrow->nr_pages) | |
530 | continue; | |
531 | ||
532 | total_pages += csrow->nr_pages; | |
533 | } | |
534 | ||
079708b9 | 535 | return sprintf(data, "%u\n", PAGES_TO_MiB(total_pages)); |
7c9281d7 DT |
536 | } |
537 | ||
7c9281d7 | 538 | #define to_mci(k) container_of(k, struct mem_ctl_info, edac_mci_kobj) |
42a8e397 | 539 | #define to_mcidev_attr(a) container_of(a,struct mcidev_sysfs_attribute,attr) |
7c9281d7 DT |
540 | |
541 | /* MCI show/store functions for top most object */ | |
542 | static ssize_t mcidev_show(struct kobject *kobj, struct attribute *attr, | |
052dfb45 | 543 | char *buffer) |
7c9281d7 DT |
544 | { |
545 | struct mem_ctl_info *mem_ctl_info = to_mci(kobj); | |
42a8e397 | 546 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); |
7c9281d7 | 547 | |
cc301b3a MCC |
548 | debugf1("%s() mem_ctl_info %p\n", __func__, mem_ctl_info); |
549 | ||
7c9281d7 DT |
550 | if (mcidev_attr->show) |
551 | return mcidev_attr->show(mem_ctl_info, buffer); | |
552 | ||
553 | return -EIO; | |
554 | } | |
555 | ||
556 | static ssize_t mcidev_store(struct kobject *kobj, struct attribute *attr, | |
052dfb45 | 557 | const char *buffer, size_t count) |
7c9281d7 DT |
558 | { |
559 | struct mem_ctl_info *mem_ctl_info = to_mci(kobj); | |
42a8e397 | 560 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); |
7c9281d7 | 561 | |
cc301b3a MCC |
562 | debugf1("%s() mem_ctl_info %p\n", __func__, mem_ctl_info); |
563 | ||
7c9281d7 DT |
564 | if (mcidev_attr->store) |
565 | return mcidev_attr->store(mem_ctl_info, buffer, count); | |
566 | ||
567 | return -EIO; | |
568 | } | |
569 | ||
8096cfaf | 570 | /* Intermediate show/store table */ |
52cf25d0 | 571 | static const struct sysfs_ops mci_ops = { |
7c9281d7 DT |
572 | .show = mcidev_show, |
573 | .store = mcidev_store | |
574 | }; | |
575 | ||
576 | #define MCIDEV_ATTR(_name,_mode,_show,_store) \ | |
42a8e397 | 577 | static struct mcidev_sysfs_attribute mci_attr_##_name = { \ |
7c9281d7 DT |
578 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
579 | .show = _show, \ | |
580 | .store = _store, \ | |
581 | }; | |
582 | ||
583 | /* default Control file */ | |
079708b9 | 584 | MCIDEV_ATTR(reset_counters, S_IWUSR, NULL, mci_reset_counters_store); |
7c9281d7 DT |
585 | |
586 | /* default Attribute files */ | |
079708b9 DT |
587 | MCIDEV_ATTR(mc_name, S_IRUGO, mci_ctl_name_show, NULL); |
588 | MCIDEV_ATTR(size_mb, S_IRUGO, mci_size_mb_show, NULL); | |
589 | MCIDEV_ATTR(seconds_since_reset, S_IRUGO, mci_seconds_show, NULL); | |
590 | MCIDEV_ATTR(ue_noinfo_count, S_IRUGO, mci_ue_noinfo_show, NULL); | |
591 | MCIDEV_ATTR(ce_noinfo_count, S_IRUGO, mci_ce_noinfo_show, NULL); | |
592 | MCIDEV_ATTR(ue_count, S_IRUGO, mci_ue_count_show, NULL); | |
593 | MCIDEV_ATTR(ce_count, S_IRUGO, mci_ce_count_show, NULL); | |
7c9281d7 DT |
594 | |
595 | /* memory scrubber attribute file */ | |
079708b9 | 596 | MCIDEV_ATTR(sdram_scrub_rate, S_IRUGO | S_IWUSR, mci_sdram_scrub_rate_show, |
052dfb45 | 597 | mci_sdram_scrub_rate_store); |
7c9281d7 | 598 | |
42a8e397 | 599 | static struct mcidev_sysfs_attribute *mci_attr[] = { |
7c9281d7 DT |
600 | &mci_attr_reset_counters, |
601 | &mci_attr_mc_name, | |
602 | &mci_attr_size_mb, | |
603 | &mci_attr_seconds_since_reset, | |
604 | &mci_attr_ue_noinfo_count, | |
605 | &mci_attr_ce_noinfo_count, | |
606 | &mci_attr_ue_count, | |
607 | &mci_attr_ce_count, | |
608 | &mci_attr_sdram_scrub_rate, | |
609 | NULL | |
610 | }; | |
611 | ||
8096cfaf | 612 | |
7c9281d7 DT |
613 | /* |
614 | * Release of a MC controlling instance | |
8096cfaf DT |
615 | * |
616 | * each MC control instance has the following resources upon entry: | |
617 | * a) a ref count on the top memctl kobj | |
618 | * b) a ref count on this module | |
619 | * | |
620 | * this function must decrement those ref counts and then | |
621 | * issue a free on the instance's memory | |
7c9281d7 | 622 | */ |
8096cfaf | 623 | static void edac_mci_control_release(struct kobject *kobj) |
7c9281d7 DT |
624 | { |
625 | struct mem_ctl_info *mci; | |
626 | ||
627 | mci = to_mci(kobj); | |
8096cfaf DT |
628 | |
629 | debugf0("%s() mci instance idx=%d releasing\n", __func__, mci->mc_idx); | |
630 | ||
631 | /* decrement the module ref count */ | |
632 | module_put(mci->owner); | |
633 | ||
634 | /* free the mci instance memory here */ | |
635 | kfree(mci); | |
7c9281d7 DT |
636 | } |
637 | ||
638 | static struct kobj_type ktype_mci = { | |
8096cfaf | 639 | .release = edac_mci_control_release, |
7c9281d7 | 640 | .sysfs_ops = &mci_ops, |
079708b9 | 641 | .default_attrs = (struct attribute **)mci_attr, |
7c9281d7 DT |
642 | }; |
643 | ||
8096cfaf DT |
644 | /* EDAC memory controller sysfs kset: |
645 | * /sys/devices/system/edac/mc | |
646 | */ | |
f9fc82ad | 647 | static struct kset *mc_kset; |
8096cfaf DT |
648 | |
649 | /* | |
650 | * edac_mc_register_sysfs_main_kobj | |
651 | * | |
652 | * setups and registers the main kobject for each mci | |
653 | */ | |
654 | int edac_mc_register_sysfs_main_kobj(struct mem_ctl_info *mci) | |
655 | { | |
656 | struct kobject *kobj_mci; | |
657 | int err; | |
658 | ||
659 | debugf1("%s()\n", __func__); | |
660 | ||
661 | kobj_mci = &mci->edac_mci_kobj; | |
662 | ||
663 | /* Init the mci's kobject */ | |
664 | memset(kobj_mci, 0, sizeof(*kobj_mci)); | |
665 | ||
8096cfaf DT |
666 | /* Record which module 'owns' this control structure |
667 | * and bump the ref count of the module | |
668 | */ | |
669 | mci->owner = THIS_MODULE; | |
670 | ||
671 | /* bump ref count on this module */ | |
672 | if (!try_module_get(mci->owner)) { | |
673 | err = -ENODEV; | |
674 | goto fail_out; | |
675 | } | |
676 | ||
b2ed215a | 677 | /* this instance become part of the mc_kset */ |
f9fc82ad | 678 | kobj_mci->kset = mc_kset; |
b2ed215a | 679 | |
8096cfaf | 680 | /* register the mc<id> kobject to the mc_kset */ |
b2ed215a GKH |
681 | err = kobject_init_and_add(kobj_mci, &ktype_mci, NULL, |
682 | "mc%d", mci->mc_idx); | |
8096cfaf DT |
683 | if (err) { |
684 | debugf1("%s()Failed to register '.../edac/mc%d'\n", | |
685 | __func__, mci->mc_idx); | |
686 | goto kobj_reg_fail; | |
687 | } | |
b2ed215a | 688 | kobject_uevent(kobj_mci, KOBJ_ADD); |
8096cfaf DT |
689 | |
690 | /* At this point, to 'free' the control struct, | |
691 | * edac_mc_unregister_sysfs_main_kobj() must be used | |
692 | */ | |
693 | ||
694 | debugf1("%s() Registered '.../edac/mc%d' kobject\n", | |
695 | __func__, mci->mc_idx); | |
696 | ||
697 | return 0; | |
698 | ||
699 | /* Error exit stack */ | |
700 | ||
701 | kobj_reg_fail: | |
702 | module_put(mci->owner); | |
703 | ||
704 | fail_out: | |
705 | return err; | |
706 | } | |
707 | ||
708 | /* | |
709 | * edac_mc_register_sysfs_main_kobj | |
710 | * | |
711 | * tears down and the main mci kobject from the mc_kset | |
712 | */ | |
713 | void edac_mc_unregister_sysfs_main_kobj(struct mem_ctl_info *mci) | |
714 | { | |
715 | /* delete the kobj from the mc_kset */ | |
c10997f6 | 716 | kobject_put(&mci->edac_mci_kobj); |
8096cfaf DT |
717 | } |
718 | ||
7c9281d7 DT |
719 | #define EDAC_DEVICE_SYMLINK "device" |
720 | ||
b968759e | 721 | #define grp_to_mci(k) (container_of(k, struct mcidev_sysfs_group_kobj, kobj)->mci) |
cc301b3a MCC |
722 | |
723 | /* MCI show/store functions for top most object */ | |
724 | static ssize_t inst_grp_show(struct kobject *kobj, struct attribute *attr, | |
725 | char *buffer) | |
726 | { | |
727 | struct mem_ctl_info *mem_ctl_info = grp_to_mci(kobj); | |
728 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); | |
729 | ||
730 | debugf1("%s() mem_ctl_info %p\n", __func__, mem_ctl_info); | |
731 | ||
732 | if (mcidev_attr->show) | |
733 | return mcidev_attr->show(mem_ctl_info, buffer); | |
734 | ||
735 | return -EIO; | |
736 | } | |
737 | ||
738 | static ssize_t inst_grp_store(struct kobject *kobj, struct attribute *attr, | |
739 | const char *buffer, size_t count) | |
740 | { | |
741 | struct mem_ctl_info *mem_ctl_info = grp_to_mci(kobj); | |
742 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); | |
743 | ||
744 | debugf1("%s() mem_ctl_info %p\n", __func__, mem_ctl_info); | |
745 | ||
746 | if (mcidev_attr->store) | |
747 | return mcidev_attr->store(mem_ctl_info, buffer, count); | |
748 | ||
749 | return -EIO; | |
750 | } | |
751 | ||
752 | /* No memory to release for this kobj */ | |
753 | static void edac_inst_grp_release(struct kobject *kobj) | |
754 | { | |
b968759e | 755 | struct mcidev_sysfs_group_kobj *grp; |
cc301b3a MCC |
756 | struct mem_ctl_info *mci; |
757 | ||
758 | debugf1("%s()\n", __func__); | |
759 | ||
b968759e | 760 | grp = container_of(kobj, struct mcidev_sysfs_group_kobj, kobj); |
cc301b3a MCC |
761 | mci = grp->mci; |
762 | ||
763 | kobject_put(&mci->edac_mci_kobj); | |
764 | } | |
765 | ||
766 | /* Intermediate show/store table */ | |
767 | static struct sysfs_ops inst_grp_ops = { | |
768 | .show = inst_grp_show, | |
769 | .store = inst_grp_store | |
770 | }; | |
771 | ||
772 | /* the kobj_type instance for a instance group */ | |
773 | static struct kobj_type ktype_inst_grp = { | |
774 | .release = edac_inst_grp_release, | |
775 | .sysfs_ops = &inst_grp_ops, | |
cc301b3a MCC |
776 | }; |
777 | ||
778 | ||
42a8e397 | 779 | /* |
8096cfaf | 780 | * edac_create_mci_instance_attributes |
9fa2fc2e MCC |
781 | * create MC driver specific attributes bellow an specified kobj |
782 | * This routine calls itself recursively, in order to create an entire | |
783 | * object tree. | |
42a8e397 | 784 | */ |
cc301b3a | 785 | static int edac_create_mci_instance_attributes(struct mem_ctl_info *mci, |
9fa2fc2e MCC |
786 | struct mcidev_sysfs_attribute *sysfs_attrib, |
787 | struct kobject *kobj) | |
42a8e397 DT |
788 | { |
789 | int err; | |
42a8e397 | 790 | |
cc301b3a MCC |
791 | debugf1("%s()\n", __func__); |
792 | ||
9fa2fc2e MCC |
793 | while (sysfs_attrib) { |
794 | if (sysfs_attrib->grp) { | |
b968759e MCC |
795 | struct mcidev_sysfs_group_kobj *grp_kobj; |
796 | ||
797 | grp_kobj = kzalloc(sizeof(*grp_kobj), GFP_KERNEL); | |
798 | if (!grp_kobj) | |
799 | return -ENOMEM; | |
800 | ||
801 | list_add_tail(&grp_kobj->list, &mci->grp_kobj_list); | |
802 | ||
803 | grp_kobj->grp = sysfs_attrib->grp; | |
804 | grp_kobj->mci = mci; | |
c419d921 | 805 | |
cc301b3a MCC |
806 | debugf0("%s() grp %s, mci %p\n", __func__, |
807 | sysfs_attrib->grp->name, mci); | |
808 | ||
b968759e MCC |
809 | err = kobject_init_and_add(&grp_kobj->kobj, |
810 | &ktype_inst_grp, | |
c419d921 | 811 | &mci->edac_mci_kobj, |
9fa2fc2e MCC |
812 | sysfs_attrib->grp->name); |
813 | if (err) | |
814 | return err; | |
815 | ||
cc301b3a | 816 | err = edac_create_mci_instance_attributes(mci, |
b968759e MCC |
817 | grp_kobj->grp->mcidev_attr, |
818 | &grp_kobj->kobj); | |
cc301b3a | 819 | |
9fa2fc2e MCC |
820 | if (err) |
821 | return err; | |
822 | } else if (sysfs_attrib->attr.name) { | |
823 | debugf0("%s() file %s\n", __func__, | |
824 | sysfs_attrib->attr.name); | |
825 | ||
826 | err = sysfs_create_file(kobj, &sysfs_attrib->attr); | |
827 | } else | |
828 | break; | |
42a8e397 | 829 | |
42a8e397 DT |
830 | if (err) { |
831 | return err; | |
832 | } | |
42a8e397 DT |
833 | sysfs_attrib++; |
834 | } | |
835 | ||
836 | return 0; | |
837 | } | |
838 | ||
8096cfaf DT |
839 | /* |
840 | * edac_remove_mci_instance_attributes | |
841 | * remove MC driver specific attributes at the topmost level | |
842 | * directory of this mci instance. | |
843 | */ | |
b968759e | 844 | static void edac_remove_mci_instance_attributes(struct mem_ctl_info *mci, |
9fa2fc2e | 845 | struct mcidev_sysfs_attribute *sysfs_attrib, |
b968759e | 846 | struct kobject *kobj, int count) |
8096cfaf | 847 | { |
b968759e MCC |
848 | struct mcidev_sysfs_group_kobj *grp_kobj, *tmp; |
849 | ||
cc301b3a MCC |
850 | debugf1("%s()\n", __func__); |
851 | ||
b968759e MCC |
852 | /* |
853 | * loop if there are attributes and until we hit a NULL entry | |
854 | * Remove first all the atributes | |
855 | */ | |
9fa2fc2e MCC |
856 | while (sysfs_attrib) { |
857 | if (sysfs_attrib->grp) { | |
b968759e MCC |
858 | list_for_each_entry(grp_kobj, &mci->grp_kobj_list, |
859 | list) | |
860 | if (grp_kobj->grp == sysfs_attrib->grp) | |
861 | edac_remove_mci_instance_attributes(mci, | |
862 | grp_kobj->grp->mcidev_attr, | |
863 | &grp_kobj->kobj, count + 1); | |
864 | } else if (sysfs_attrib->attr.name) { | |
9fa2fc2e MCC |
865 | debugf0("%s() file %s\n", __func__, |
866 | sysfs_attrib->attr.name); | |
867 | sysfs_remove_file(kobj, &sysfs_attrib->attr); | |
868 | } else | |
869 | break; | |
8096cfaf DT |
870 | sysfs_attrib++; |
871 | } | |
b968759e MCC |
872 | |
873 | /* | |
874 | * Now that all attributes got removed, it is save to remove all groups | |
875 | */ | |
876 | if (!count) | |
877 | list_for_each_entry_safe(grp_kobj, tmp, &mci->grp_kobj_list, | |
878 | list) { | |
879 | debugf0("%s() grp %s\n", __func__, grp_kobj->grp->name); | |
880 | kobject_put(&grp_kobj->kobj); | |
881 | } | |
8096cfaf DT |
882 | } |
883 | ||
884 | ||
7c9281d7 DT |
885 | /* |
886 | * Create a new Memory Controller kobject instance, | |
887 | * mc<id> under the 'mc' directory | |
888 | * | |
889 | * Return: | |
890 | * 0 Success | |
891 | * !0 Failure | |
892 | */ | |
893 | int edac_create_sysfs_mci_device(struct mem_ctl_info *mci) | |
894 | { | |
895 | int i; | |
896 | int err; | |
897 | struct csrow_info *csrow; | |
8096cfaf | 898 | struct kobject *kobj_mci = &mci->edac_mci_kobj; |
7c9281d7 DT |
899 | |
900 | debugf0("%s() idx=%d\n", __func__, mci->mc_idx); | |
7c9281d7 | 901 | |
b968759e MCC |
902 | INIT_LIST_HEAD(&mci->grp_kobj_list); |
903 | ||
7c9281d7 | 904 | /* create a symlink for the device */ |
8096cfaf | 905 | err = sysfs_create_link(kobj_mci, &mci->dev->kobj, |
7c9281d7 | 906 | EDAC_DEVICE_SYMLINK); |
8096cfaf DT |
907 | if (err) { |
908 | debugf1("%s() failure to create symlink\n", __func__); | |
7c9281d7 | 909 | goto fail0; |
8096cfaf | 910 | } |
7c9281d7 | 911 | |
42a8e397 DT |
912 | /* If the low level driver desires some attributes, |
913 | * then create them now for the driver. | |
914 | */ | |
915 | if (mci->mc_driver_sysfs_attributes) { | |
cc301b3a | 916 | err = edac_create_mci_instance_attributes(mci, |
9fa2fc2e MCC |
917 | mci->mc_driver_sysfs_attributes, |
918 | &mci->edac_mci_kobj); | |
8096cfaf DT |
919 | if (err) { |
920 | debugf1("%s() failure to create mci attributes\n", | |
921 | __func__); | |
42a8e397 | 922 | goto fail0; |
8096cfaf | 923 | } |
42a8e397 DT |
924 | } |
925 | ||
8096cfaf | 926 | /* Make directories for each CSROW object under the mc<id> kobject |
7c9281d7 DT |
927 | */ |
928 | for (i = 0; i < mci->nr_csrows; i++) { | |
929 | csrow = &mci->csrows[i]; | |
930 | ||
931 | /* Only expose populated CSROWs */ | |
932 | if (csrow->nr_pages > 0) { | |
8096cfaf DT |
933 | err = edac_create_csrow_object(mci, csrow, i); |
934 | if (err) { | |
935 | debugf1("%s() failure: create csrow %d obj\n", | |
936 | __func__, i); | |
7c9281d7 | 937 | goto fail1; |
8096cfaf | 938 | } |
7c9281d7 DT |
939 | } |
940 | } | |
941 | ||
942 | return 0; | |
943 | ||
944 | /* CSROW error: backout what has already been registered, */ | |
052dfb45 | 945 | fail1: |
079708b9 | 946 | for (i--; i >= 0; i--) { |
7c9281d7 | 947 | if (csrow->nr_pages > 0) { |
c10997f6 | 948 | kobject_put(&mci->csrows[i].kobj); |
7c9281d7 DT |
949 | } |
950 | } | |
951 | ||
8096cfaf | 952 | /* remove the mci instance's attributes, if any */ |
b968759e MCC |
953 | edac_remove_mci_instance_attributes(mci, |
954 | mci->mc_driver_sysfs_attributes, &mci->edac_mci_kobj, 0); | |
8096cfaf DT |
955 | |
956 | /* remove the symlink */ | |
957 | sysfs_remove_link(kobj_mci, EDAC_DEVICE_SYMLINK); | |
958 | ||
052dfb45 | 959 | fail0: |
7c9281d7 DT |
960 | return err; |
961 | } | |
962 | ||
963 | /* | |
964 | * remove a Memory Controller instance | |
965 | */ | |
966 | void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) | |
967 | { | |
968 | int i; | |
969 | ||
970 | debugf0("%s()\n", __func__); | |
971 | ||
972 | /* remove all csrow kobjects */ | |
973 | for (i = 0; i < mci->nr_csrows; i++) { | |
974 | if (mci->csrows[i].nr_pages > 0) { | |
8096cfaf | 975 | debugf0("%s() unreg csrow-%d\n", __func__, i); |
c10997f6 | 976 | kobject_put(&mci->csrows[i].kobj); |
7c9281d7 DT |
977 | } |
978 | } | |
979 | ||
8096cfaf DT |
980 | debugf0("%s() remove_link\n", __func__); |
981 | ||
982 | /* remove the symlink */ | |
7c9281d7 | 983 | sysfs_remove_link(&mci->edac_mci_kobj, EDAC_DEVICE_SYMLINK); |
8096cfaf DT |
984 | |
985 | debugf0("%s() remove_mci_instance\n", __func__); | |
986 | ||
987 | /* remove this mci instance's attribtes */ | |
b968759e MCC |
988 | edac_remove_mci_instance_attributes(mci, |
989 | mci->mc_driver_sysfs_attributes, | |
990 | &mci->edac_mci_kobj, 0); | |
8096cfaf DT |
991 | debugf0("%s() unregister this mci kobj\n", __func__); |
992 | ||
993 | /* unregister this instance's kobject */ | |
c10997f6 | 994 | kobject_put(&mci->edac_mci_kobj); |
7c9281d7 | 995 | } |
8096cfaf DT |
996 | |
997 | ||
998 | ||
999 | ||
1000 | /* | |
1001 | * edac_setup_sysfs_mc_kset(void) | |
1002 | * | |
1003 | * Initialize the mc_kset for the 'mc' entry | |
1004 | * This requires creating the top 'mc' directory with a kset | |
1005 | * and its controls/attributes. | |
1006 | * | |
1007 | * To this 'mc' kset, instance 'mci' will be grouped as children. | |
1008 | * | |
1009 | * Return: 0 SUCCESS | |
1010 | * !0 FAILURE error code | |
1011 | */ | |
1012 | int edac_sysfs_setup_mc_kset(void) | |
1013 | { | |
1014 | int err = 0; | |
1015 | struct sysdev_class *edac_class; | |
1016 | ||
1017 | debugf1("%s()\n", __func__); | |
1018 | ||
1019 | /* get the /sys/devices/system/edac class reference */ | |
1020 | edac_class = edac_get_edac_class(); | |
1021 | if (edac_class == NULL) { | |
1022 | debugf1("%s() no edac_class error=%d\n", __func__, err); | |
1023 | goto fail_out; | |
1024 | } | |
1025 | ||
1026 | /* Init the MC's kobject */ | |
f9fc82ad AJ |
1027 | mc_kset = kset_create_and_add("mc", NULL, &edac_class->kset.kobj); |
1028 | if (!mc_kset) { | |
1029 | err = -ENOMEM; | |
8096cfaf DT |
1030 | debugf1("%s() Failed to register '.../edac/mc'\n", __func__); |
1031 | goto fail_out; | |
1032 | } | |
1033 | ||
1034 | debugf1("%s() Registered '.../edac/mc' kobject\n", __func__); | |
1035 | ||
1036 | return 0; | |
1037 | ||
1038 | ||
1039 | /* error unwind stack */ | |
1040 | fail_out: | |
1041 | return err; | |
1042 | } | |
1043 | ||
1044 | /* | |
1045 | * edac_sysfs_teardown_mc_kset | |
1046 | * | |
1047 | * deconstruct the mc_ket for memory controllers | |
1048 | */ | |
1049 | void edac_sysfs_teardown_mc_kset(void) | |
1050 | { | |
f9fc82ad | 1051 | kset_unregister(mc_kset); |
8096cfaf DT |
1052 | } |
1053 |