Commit | Line | Data |
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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> |
30e1f7a8 | 14 | #include <linux/edac.h> |
8096cfaf | 15 | #include <linux/bug.h> |
7c9281d7 | 16 | |
20bcb7a8 | 17 | #include "edac_core.h" |
7c9281d7 DT |
18 | #include "edac_module.h" |
19 | ||
8096cfaf | 20 | |
7c9281d7 | 21 | /* MC EDAC Controls, setable by module parameter, and sysfs */ |
4de78c68 DJ |
22 | static int edac_mc_log_ue = 1; |
23 | static int edac_mc_log_ce = 1; | |
f044091c | 24 | static int edac_mc_panic_on_ue; |
4de78c68 | 25 | static int edac_mc_poll_msec = 1000; |
7c9281d7 DT |
26 | |
27 | /* Getter functions for above */ | |
4de78c68 | 28 | int edac_mc_get_log_ue(void) |
7c9281d7 | 29 | { |
4de78c68 | 30 | return edac_mc_log_ue; |
7c9281d7 DT |
31 | } |
32 | ||
4de78c68 | 33 | int edac_mc_get_log_ce(void) |
7c9281d7 | 34 | { |
4de78c68 | 35 | return edac_mc_log_ce; |
7c9281d7 DT |
36 | } |
37 | ||
4de78c68 | 38 | int edac_mc_get_panic_on_ue(void) |
7c9281d7 | 39 | { |
4de78c68 | 40 | return edac_mc_panic_on_ue; |
7c9281d7 DT |
41 | } |
42 | ||
81d87cb1 DJ |
43 | /* this is temporary */ |
44 | int edac_mc_get_poll_msec(void) | |
45 | { | |
4de78c68 | 46 | return edac_mc_poll_msec; |
7c9281d7 DT |
47 | } |
48 | ||
096846e2 AJ |
49 | static int edac_set_poll_msec(const char *val, struct kernel_param *kp) |
50 | { | |
51 | long l; | |
52 | int ret; | |
53 | ||
54 | if (!val) | |
55 | return -EINVAL; | |
56 | ||
57 | ret = strict_strtol(val, 0, &l); | |
58 | if (ret == -EINVAL || ((int)l != l)) | |
59 | return -EINVAL; | |
60 | *((int *)kp->arg) = l; | |
61 | ||
62 | /* notify edac_mc engine to reset the poll period */ | |
63 | edac_mc_reset_delay_period(l); | |
64 | ||
65 | return 0; | |
66 | } | |
67 | ||
7c9281d7 | 68 | /* Parameter declarations for above */ |
4de78c68 DJ |
69 | module_param(edac_mc_panic_on_ue, int, 0644); |
70 | MODULE_PARM_DESC(edac_mc_panic_on_ue, "Panic on uncorrected error: 0=off 1=on"); | |
71 | module_param(edac_mc_log_ue, int, 0644); | |
72 | MODULE_PARM_DESC(edac_mc_log_ue, | |
079708b9 | 73 | "Log uncorrectable error to console: 0=off 1=on"); |
4de78c68 DJ |
74 | module_param(edac_mc_log_ce, int, 0644); |
75 | MODULE_PARM_DESC(edac_mc_log_ce, | |
079708b9 | 76 | "Log correctable error to console: 0=off 1=on"); |
096846e2 AJ |
77 | module_param_call(edac_mc_poll_msec, edac_set_poll_msec, param_get_int, |
78 | &edac_mc_poll_msec, 0644); | |
4de78c68 | 79 | MODULE_PARM_DESC(edac_mc_poll_msec, "Polling period in milliseconds"); |
7c9281d7 | 80 | |
7c9281d7 DT |
81 | /* |
82 | * various constants for Memory Controllers | |
83 | */ | |
84 | static const char *mem_types[] = { | |
85 | [MEM_EMPTY] = "Empty", | |
86 | [MEM_RESERVED] = "Reserved", | |
87 | [MEM_UNKNOWN] = "Unknown", | |
88 | [MEM_FPM] = "FPM", | |
89 | [MEM_EDO] = "EDO", | |
90 | [MEM_BEDO] = "BEDO", | |
91 | [MEM_SDR] = "Unbuffered-SDR", | |
92 | [MEM_RDR] = "Registered-SDR", | |
93 | [MEM_DDR] = "Unbuffered-DDR", | |
94 | [MEM_RDDR] = "Registered-DDR", | |
1a9b85e6 DJ |
95 | [MEM_RMBS] = "RMBS", |
96 | [MEM_DDR2] = "Unbuffered-DDR2", | |
97 | [MEM_FB_DDR2] = "FullyBuffered-DDR2", | |
1d5f726c | 98 | [MEM_RDDR2] = "Registered-DDR2", |
b1cfebc9 YS |
99 | [MEM_XDR] = "XDR", |
100 | [MEM_DDR3] = "Unbuffered-DDR3", | |
101 | [MEM_RDDR3] = "Registered-DDR3" | |
7c9281d7 DT |
102 | }; |
103 | ||
104 | static const char *dev_types[] = { | |
105 | [DEV_UNKNOWN] = "Unknown", | |
106 | [DEV_X1] = "x1", | |
107 | [DEV_X2] = "x2", | |
108 | [DEV_X4] = "x4", | |
109 | [DEV_X8] = "x8", | |
110 | [DEV_X16] = "x16", | |
111 | [DEV_X32] = "x32", | |
112 | [DEV_X64] = "x64" | |
113 | }; | |
114 | ||
115 | static const char *edac_caps[] = { | |
116 | [EDAC_UNKNOWN] = "Unknown", | |
117 | [EDAC_NONE] = "None", | |
118 | [EDAC_RESERVED] = "Reserved", | |
119 | [EDAC_PARITY] = "PARITY", | |
120 | [EDAC_EC] = "EC", | |
121 | [EDAC_SECDED] = "SECDED", | |
122 | [EDAC_S2ECD2ED] = "S2ECD2ED", | |
123 | [EDAC_S4ECD4ED] = "S4ECD4ED", | |
124 | [EDAC_S8ECD8ED] = "S8ECD8ED", | |
125 | [EDAC_S16ECD16ED] = "S16ECD16ED" | |
126 | }; | |
127 | ||
7c9281d7 DT |
128 | /* EDAC sysfs CSROW data structures and methods |
129 | */ | |
130 | ||
131 | /* Set of more default csrow<id> attribute show/store functions */ | |
e27e3dac | 132 | static ssize_t csrow_ue_count_show(struct csrow_info *csrow, char *data, |
052dfb45 | 133 | int private) |
7c9281d7 | 134 | { |
079708b9 | 135 | return sprintf(data, "%u\n", csrow->ue_count); |
7c9281d7 DT |
136 | } |
137 | ||
e27e3dac | 138 | static ssize_t csrow_ce_count_show(struct csrow_info *csrow, char *data, |
052dfb45 | 139 | int private) |
7c9281d7 | 140 | { |
079708b9 | 141 | return sprintf(data, "%u\n", csrow->ce_count); |
7c9281d7 DT |
142 | } |
143 | ||
e27e3dac | 144 | static ssize_t csrow_size_show(struct csrow_info *csrow, char *data, |
052dfb45 | 145 | int private) |
7c9281d7 | 146 | { |
079708b9 | 147 | return sprintf(data, "%u\n", PAGES_TO_MiB(csrow->nr_pages)); |
7c9281d7 DT |
148 | } |
149 | ||
e27e3dac | 150 | static ssize_t csrow_mem_type_show(struct csrow_info *csrow, char *data, |
052dfb45 | 151 | int private) |
7c9281d7 | 152 | { |
079708b9 | 153 | return sprintf(data, "%s\n", mem_types[csrow->mtype]); |
7c9281d7 DT |
154 | } |
155 | ||
e27e3dac | 156 | static ssize_t csrow_dev_type_show(struct csrow_info *csrow, char *data, |
052dfb45 | 157 | int private) |
7c9281d7 | 158 | { |
079708b9 | 159 | return sprintf(data, "%s\n", dev_types[csrow->dtype]); |
7c9281d7 DT |
160 | } |
161 | ||
e27e3dac | 162 | static ssize_t csrow_edac_mode_show(struct csrow_info *csrow, char *data, |
052dfb45 | 163 | int private) |
7c9281d7 | 164 | { |
079708b9 | 165 | return sprintf(data, "%s\n", edac_caps[csrow->edac_mode]); |
7c9281d7 DT |
166 | } |
167 | ||
168 | /* show/store functions for DIMM Label attributes */ | |
169 | static ssize_t channel_dimm_label_show(struct csrow_info *csrow, | |
052dfb45 | 170 | char *data, int channel) |
7c9281d7 | 171 | { |
124682c7 AJ |
172 | /* if field has not been initialized, there is nothing to send */ |
173 | if (!csrow->channels[channel].label[0]) | |
174 | return 0; | |
175 | ||
176 | return snprintf(data, EDAC_MC_LABEL_LEN, "%s\n", | |
7c9281d7 DT |
177 | csrow->channels[channel].label); |
178 | } | |
179 | ||
180 | static ssize_t channel_dimm_label_store(struct csrow_info *csrow, | |
079708b9 DT |
181 | const char *data, |
182 | size_t count, int channel) | |
7c9281d7 DT |
183 | { |
184 | ssize_t max_size = 0; | |
185 | ||
079708b9 | 186 | max_size = min((ssize_t) count, (ssize_t) EDAC_MC_LABEL_LEN - 1); |
7c9281d7 DT |
187 | strncpy(csrow->channels[channel].label, data, max_size); |
188 | csrow->channels[channel].label[max_size] = '\0'; | |
189 | ||
190 | return max_size; | |
191 | } | |
192 | ||
193 | /* show function for dynamic chX_ce_count attribute */ | |
194 | static ssize_t channel_ce_count_show(struct csrow_info *csrow, | |
052dfb45 | 195 | char *data, int channel) |
7c9281d7 DT |
196 | { |
197 | return sprintf(data, "%u\n", csrow->channels[channel].ce_count); | |
198 | } | |
199 | ||
200 | /* csrow specific attribute structure */ | |
201 | struct csrowdev_attribute { | |
202 | struct attribute attr; | |
079708b9 DT |
203 | ssize_t(*show) (struct csrow_info *, char *, int); |
204 | ssize_t(*store) (struct csrow_info *, const char *, size_t, int); | |
205 | int private; | |
7c9281d7 DT |
206 | }; |
207 | ||
208 | #define to_csrow(k) container_of(k, struct csrow_info, kobj) | |
209 | #define to_csrowdev_attr(a) container_of(a, struct csrowdev_attribute, attr) | |
210 | ||
211 | /* Set of show/store higher level functions for default csrow attributes */ | |
212 | static ssize_t csrowdev_show(struct kobject *kobj, | |
052dfb45 | 213 | struct attribute *attr, char *buffer) |
7c9281d7 DT |
214 | { |
215 | struct csrow_info *csrow = to_csrow(kobj); | |
216 | struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr); | |
217 | ||
218 | if (csrowdev_attr->show) | |
219 | return csrowdev_attr->show(csrow, | |
052dfb45 | 220 | buffer, csrowdev_attr->private); |
7c9281d7 DT |
221 | return -EIO; |
222 | } | |
223 | ||
224 | static ssize_t csrowdev_store(struct kobject *kobj, struct attribute *attr, | |
052dfb45 | 225 | const char *buffer, size_t count) |
7c9281d7 DT |
226 | { |
227 | struct csrow_info *csrow = to_csrow(kobj); | |
079708b9 | 228 | struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr); |
7c9281d7 DT |
229 | |
230 | if (csrowdev_attr->store) | |
231 | return csrowdev_attr->store(csrow, | |
052dfb45 DT |
232 | buffer, |
233 | count, csrowdev_attr->private); | |
7c9281d7 DT |
234 | return -EIO; |
235 | } | |
236 | ||
52cf25d0 | 237 | static const struct sysfs_ops csrowfs_ops = { |
079708b9 DT |
238 | .show = csrowdev_show, |
239 | .store = csrowdev_store | |
7c9281d7 DT |
240 | }; |
241 | ||
242 | #define CSROWDEV_ATTR(_name,_mode,_show,_store,_private) \ | |
243 | static struct csrowdev_attribute attr_##_name = { \ | |
244 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
245 | .show = _show, \ | |
246 | .store = _store, \ | |
247 | .private = _private, \ | |
248 | }; | |
249 | ||
250 | /* default cwrow<id>/attribute files */ | |
079708b9 DT |
251 | CSROWDEV_ATTR(size_mb, S_IRUGO, csrow_size_show, NULL, 0); |
252 | CSROWDEV_ATTR(dev_type, S_IRUGO, csrow_dev_type_show, NULL, 0); | |
253 | CSROWDEV_ATTR(mem_type, S_IRUGO, csrow_mem_type_show, NULL, 0); | |
254 | CSROWDEV_ATTR(edac_mode, S_IRUGO, csrow_edac_mode_show, NULL, 0); | |
255 | CSROWDEV_ATTR(ue_count, S_IRUGO, csrow_ue_count_show, NULL, 0); | |
256 | CSROWDEV_ATTR(ce_count, S_IRUGO, csrow_ce_count_show, NULL, 0); | |
7c9281d7 DT |
257 | |
258 | /* default attributes of the CSROW<id> object */ | |
259 | static struct csrowdev_attribute *default_csrow_attr[] = { | |
260 | &attr_dev_type, | |
261 | &attr_mem_type, | |
262 | &attr_edac_mode, | |
263 | &attr_size_mb, | |
264 | &attr_ue_count, | |
265 | &attr_ce_count, | |
266 | NULL, | |
267 | }; | |
268 | ||
7c9281d7 | 269 | /* possible dynamic channel DIMM Label attribute files */ |
079708b9 | 270 | CSROWDEV_ATTR(ch0_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 271 | channel_dimm_label_show, channel_dimm_label_store, 0); |
079708b9 | 272 | CSROWDEV_ATTR(ch1_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 273 | channel_dimm_label_show, channel_dimm_label_store, 1); |
079708b9 | 274 | CSROWDEV_ATTR(ch2_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 275 | channel_dimm_label_show, channel_dimm_label_store, 2); |
079708b9 | 276 | CSROWDEV_ATTR(ch3_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 277 | channel_dimm_label_show, channel_dimm_label_store, 3); |
079708b9 | 278 | CSROWDEV_ATTR(ch4_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 279 | channel_dimm_label_show, channel_dimm_label_store, 4); |
079708b9 | 280 | CSROWDEV_ATTR(ch5_dimm_label, S_IRUGO | S_IWUSR, |
052dfb45 | 281 | channel_dimm_label_show, channel_dimm_label_store, 5); |
7c9281d7 DT |
282 | |
283 | /* Total possible dynamic DIMM Label attribute file table */ | |
284 | static struct csrowdev_attribute *dynamic_csrow_dimm_attr[] = { | |
079708b9 DT |
285 | &attr_ch0_dimm_label, |
286 | &attr_ch1_dimm_label, | |
287 | &attr_ch2_dimm_label, | |
288 | &attr_ch3_dimm_label, | |
289 | &attr_ch4_dimm_label, | |
290 | &attr_ch5_dimm_label | |
7c9281d7 DT |
291 | }; |
292 | ||
293 | /* possible dynamic channel ce_count attribute files */ | |
079708b9 DT |
294 | CSROWDEV_ATTR(ch0_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 0); |
295 | CSROWDEV_ATTR(ch1_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 1); | |
296 | CSROWDEV_ATTR(ch2_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 2); | |
297 | CSROWDEV_ATTR(ch3_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 3); | |
298 | CSROWDEV_ATTR(ch4_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 4); | |
299 | CSROWDEV_ATTR(ch5_ce_count, S_IRUGO | S_IWUSR, channel_ce_count_show, NULL, 5); | |
7c9281d7 DT |
300 | |
301 | /* Total possible dynamic ce_count attribute file table */ | |
302 | static struct csrowdev_attribute *dynamic_csrow_ce_count_attr[] = { | |
079708b9 DT |
303 | &attr_ch0_ce_count, |
304 | &attr_ch1_ce_count, | |
305 | &attr_ch2_ce_count, | |
306 | &attr_ch3_ce_count, | |
307 | &attr_ch4_ce_count, | |
308 | &attr_ch5_ce_count | |
7c9281d7 DT |
309 | }; |
310 | ||
7c9281d7 DT |
311 | #define EDAC_NR_CHANNELS 6 |
312 | ||
313 | /* Create dynamic CHANNEL files, indexed by 'chan', under specifed CSROW */ | |
314 | static int edac_create_channel_files(struct kobject *kobj, int chan) | |
315 | { | |
079708b9 | 316 | int err = -ENODEV; |
7c9281d7 DT |
317 | |
318 | if (chan >= EDAC_NR_CHANNELS) | |
319 | return err; | |
320 | ||
321 | /* create the DIMM label attribute file */ | |
322 | err = sysfs_create_file(kobj, | |
079708b9 DT |
323 | (struct attribute *) |
324 | dynamic_csrow_dimm_attr[chan]); | |
7c9281d7 DT |
325 | |
326 | if (!err) { | |
327 | /* create the CE Count attribute file */ | |
328 | err = sysfs_create_file(kobj, | |
079708b9 DT |
329 | (struct attribute *) |
330 | dynamic_csrow_ce_count_attr[chan]); | |
7c9281d7 | 331 | } else { |
e27e3dac DT |
332 | debugf1("%s() dimm labels and ce_count files created", |
333 | __func__); | |
7c9281d7 DT |
334 | } |
335 | ||
336 | return err; | |
337 | } | |
338 | ||
339 | /* No memory to release for this kobj */ | |
340 | static void edac_csrow_instance_release(struct kobject *kobj) | |
341 | { | |
8096cfaf | 342 | struct mem_ctl_info *mci; |
7c9281d7 DT |
343 | struct csrow_info *cs; |
344 | ||
8096cfaf DT |
345 | debugf1("%s()\n", __func__); |
346 | ||
7c9281d7 | 347 | cs = container_of(kobj, struct csrow_info, kobj); |
8096cfaf DT |
348 | mci = cs->mci; |
349 | ||
350 | kobject_put(&mci->edac_mci_kobj); | |
7c9281d7 DT |
351 | } |
352 | ||
353 | /* the kobj_type instance for a CSROW */ | |
354 | static struct kobj_type ktype_csrow = { | |
355 | .release = edac_csrow_instance_release, | |
356 | .sysfs_ops = &csrowfs_ops, | |
079708b9 | 357 | .default_attrs = (struct attribute **)default_csrow_attr, |
7c9281d7 DT |
358 | }; |
359 | ||
360 | /* Create a CSROW object under specifed edac_mc_device */ | |
8096cfaf DT |
361 | static int edac_create_csrow_object(struct mem_ctl_info *mci, |
362 | struct csrow_info *csrow, int index) | |
7c9281d7 | 363 | { |
8096cfaf DT |
364 | struct kobject *kobj_mci = &mci->edac_mci_kobj; |
365 | struct kobject *kobj; | |
7c9281d7 | 366 | int chan; |
8096cfaf | 367 | int err; |
7c9281d7 DT |
368 | |
369 | /* generate ..../edac/mc/mc<id>/csrow<index> */ | |
8096cfaf DT |
370 | memset(&csrow->kobj, 0, sizeof(csrow->kobj)); |
371 | csrow->mci = mci; /* include container up link */ | |
8096cfaf DT |
372 | |
373 | /* bump the mci instance's kobject's ref count */ | |
374 | kobj = kobject_get(&mci->edac_mci_kobj); | |
375 | if (!kobj) { | |
376 | err = -ENODEV; | |
377 | goto err_out; | |
378 | } | |
7c9281d7 DT |
379 | |
380 | /* Instanstiate the csrow object */ | |
b2ed215a GKH |
381 | err = kobject_init_and_add(&csrow->kobj, &ktype_csrow, kobj_mci, |
382 | "csrow%d", index); | |
8096cfaf DT |
383 | if (err) |
384 | goto err_release_top_kobj; | |
385 | ||
386 | /* At this point, to release a csrow kobj, one must | |
c10997f6 | 387 | * call the kobject_put and allow that tear down |
8096cfaf DT |
388 | * to work the releasing |
389 | */ | |
390 | ||
391 | /* Create the dyanmic attribute files on this csrow, | |
392 | * namely, the DIMM labels and the channel ce_count | |
393 | */ | |
394 | for (chan = 0; chan < csrow->nr_channels; chan++) { | |
395 | err = edac_create_channel_files(&csrow->kobj, chan); | |
396 | if (err) { | |
397 | /* special case the unregister here */ | |
c10997f6 | 398 | kobject_put(&csrow->kobj); |
8096cfaf | 399 | goto err_out; |
7c9281d7 DT |
400 | } |
401 | } | |
b2ed215a | 402 | kobject_uevent(&csrow->kobj, KOBJ_ADD); |
8096cfaf DT |
403 | return 0; |
404 | ||
405 | /* error unwind stack */ | |
406 | err_release_top_kobj: | |
407 | kobject_put(&mci->edac_mci_kobj); | |
408 | ||
409 | err_out: | |
7c9281d7 DT |
410 | return err; |
411 | } | |
412 | ||
413 | /* default sysfs methods and data structures for the main MCI kobject */ | |
414 | ||
415 | static ssize_t mci_reset_counters_store(struct mem_ctl_info *mci, | |
079708b9 | 416 | const char *data, size_t count) |
7c9281d7 DT |
417 | { |
418 | int row, chan; | |
419 | ||
420 | mci->ue_noinfo_count = 0; | |
421 | mci->ce_noinfo_count = 0; | |
422 | mci->ue_count = 0; | |
423 | mci->ce_count = 0; | |
424 | ||
425 | for (row = 0; row < mci->nr_csrows; row++) { | |
426 | struct csrow_info *ri = &mci->csrows[row]; | |
427 | ||
428 | ri->ue_count = 0; | |
429 | ri->ce_count = 0; | |
430 | ||
431 | for (chan = 0; chan < ri->nr_channels; chan++) | |
432 | ri->channels[chan].ce_count = 0; | |
433 | } | |
434 | ||
435 | mci->start_time = jiffies; | |
436 | return count; | |
437 | } | |
438 | ||
39094443 BP |
439 | /* Memory scrubbing interface: |
440 | * | |
441 | * A MC driver can limit the scrubbing bandwidth based on the CPU type. | |
442 | * Therefore, ->set_sdram_scrub_rate should be made to return the actual | |
443 | * bandwidth that is accepted or 0 when scrubbing is to be disabled. | |
444 | * | |
445 | * Negative value still means that an error has occurred while setting | |
446 | * the scrub rate. | |
447 | */ | |
7c9281d7 | 448 | static ssize_t mci_sdram_scrub_rate_store(struct mem_ctl_info *mci, |
eba042a8 | 449 | const char *data, size_t count) |
7c9281d7 | 450 | { |
eba042a8 | 451 | unsigned long bandwidth = 0; |
39094443 | 452 | int new_bw = 0; |
7c9281d7 | 453 | |
39094443 | 454 | if (!mci->set_sdram_scrub_rate) |
eba042a8 | 455 | return -EINVAL; |
7c9281d7 | 456 | |
eba042a8 BP |
457 | if (strict_strtoul(data, 10, &bandwidth) < 0) |
458 | return -EINVAL; | |
7c9281d7 | 459 | |
39094443 | 460 | new_bw = mci->set_sdram_scrub_rate(mci, bandwidth); |
4949603a MT |
461 | if (new_bw < 0) { |
462 | edac_printk(KERN_WARNING, EDAC_MC, | |
463 | "Error setting scrub rate to: %lu\n", bandwidth); | |
464 | return -EINVAL; | |
7c9281d7 | 465 | } |
39094443 | 466 | |
4949603a | 467 | return count; |
7c9281d7 DT |
468 | } |
469 | ||
39094443 BP |
470 | /* |
471 | * ->get_sdram_scrub_rate() return value semantics same as above. | |
472 | */ | |
7c9281d7 DT |
473 | static ssize_t mci_sdram_scrub_rate_show(struct mem_ctl_info *mci, char *data) |
474 | { | |
39094443 | 475 | int bandwidth = 0; |
eba042a8 | 476 | |
39094443 | 477 | if (!mci->get_sdram_scrub_rate) |
eba042a8 | 478 | return -EINVAL; |
eba042a8 | 479 | |
39094443 BP |
480 | bandwidth = mci->get_sdram_scrub_rate(mci); |
481 | if (bandwidth < 0) { | |
eba042a8 | 482 | edac_printk(KERN_DEBUG, EDAC_MC, "Error reading scrub rate\n"); |
39094443 | 483 | return bandwidth; |
7c9281d7 | 484 | } |
39094443 | 485 | |
39094443 | 486 | return sprintf(data, "%d\n", bandwidth); |
7c9281d7 DT |
487 | } |
488 | ||
489 | /* default attribute files for the MCI object */ | |
490 | static ssize_t mci_ue_count_show(struct mem_ctl_info *mci, char *data) | |
491 | { | |
079708b9 | 492 | return sprintf(data, "%d\n", mci->ue_count); |
7c9281d7 DT |
493 | } |
494 | ||
495 | static ssize_t mci_ce_count_show(struct mem_ctl_info *mci, char *data) | |
496 | { | |
079708b9 | 497 | return sprintf(data, "%d\n", mci->ce_count); |
7c9281d7 DT |
498 | } |
499 | ||
500 | static ssize_t mci_ce_noinfo_show(struct mem_ctl_info *mci, char *data) | |
501 | { | |
079708b9 | 502 | return sprintf(data, "%d\n", mci->ce_noinfo_count); |
7c9281d7 DT |
503 | } |
504 | ||
505 | static ssize_t mci_ue_noinfo_show(struct mem_ctl_info *mci, char *data) | |
506 | { | |
079708b9 | 507 | return sprintf(data, "%d\n", mci->ue_noinfo_count); |
7c9281d7 DT |
508 | } |
509 | ||
510 | static ssize_t mci_seconds_show(struct mem_ctl_info *mci, char *data) | |
511 | { | |
079708b9 | 512 | return sprintf(data, "%ld\n", (jiffies - mci->start_time) / HZ); |
7c9281d7 DT |
513 | } |
514 | ||
515 | static ssize_t mci_ctl_name_show(struct mem_ctl_info *mci, char *data) | |
516 | { | |
079708b9 | 517 | return sprintf(data, "%s\n", mci->ctl_name); |
7c9281d7 DT |
518 | } |
519 | ||
520 | static ssize_t mci_size_mb_show(struct mem_ctl_info *mci, char *data) | |
521 | { | |
522 | int total_pages, csrow_idx; | |
523 | ||
524 | for (total_pages = csrow_idx = 0; csrow_idx < mci->nr_csrows; | |
052dfb45 | 525 | csrow_idx++) { |
7c9281d7 DT |
526 | struct csrow_info *csrow = &mci->csrows[csrow_idx]; |
527 | ||
528 | if (!csrow->nr_pages) | |
529 | continue; | |
530 | ||
531 | total_pages += csrow->nr_pages; | |
532 | } | |
533 | ||
079708b9 | 534 | return sprintf(data, "%u\n", PAGES_TO_MiB(total_pages)); |
7c9281d7 DT |
535 | } |
536 | ||
7c9281d7 | 537 | #define to_mci(k) container_of(k, struct mem_ctl_info, edac_mci_kobj) |
42a8e397 | 538 | #define to_mcidev_attr(a) container_of(a,struct mcidev_sysfs_attribute,attr) |
7c9281d7 DT |
539 | |
540 | /* MCI show/store functions for top most object */ | |
541 | static ssize_t mcidev_show(struct kobject *kobj, struct attribute *attr, | |
052dfb45 | 542 | char *buffer) |
7c9281d7 DT |
543 | { |
544 | struct mem_ctl_info *mem_ctl_info = to_mci(kobj); | |
42a8e397 | 545 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); |
7c9281d7 | 546 | |
cc301b3a MCC |
547 | debugf1("%s() mem_ctl_info %p\n", __func__, mem_ctl_info); |
548 | ||
7c9281d7 DT |
549 | if (mcidev_attr->show) |
550 | return mcidev_attr->show(mem_ctl_info, buffer); | |
551 | ||
552 | return -EIO; | |
553 | } | |
554 | ||
555 | static ssize_t mcidev_store(struct kobject *kobj, struct attribute *attr, | |
052dfb45 | 556 | const char *buffer, size_t count) |
7c9281d7 DT |
557 | { |
558 | struct mem_ctl_info *mem_ctl_info = to_mci(kobj); | |
42a8e397 | 559 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); |
7c9281d7 | 560 | |
cc301b3a MCC |
561 | debugf1("%s() mem_ctl_info %p\n", __func__, mem_ctl_info); |
562 | ||
7c9281d7 DT |
563 | if (mcidev_attr->store) |
564 | return mcidev_attr->store(mem_ctl_info, buffer, count); | |
565 | ||
566 | return -EIO; | |
567 | } | |
568 | ||
8096cfaf | 569 | /* Intermediate show/store table */ |
52cf25d0 | 570 | static const struct sysfs_ops mci_ops = { |
7c9281d7 DT |
571 | .show = mcidev_show, |
572 | .store = mcidev_store | |
573 | }; | |
574 | ||
575 | #define MCIDEV_ATTR(_name,_mode,_show,_store) \ | |
42a8e397 | 576 | static struct mcidev_sysfs_attribute mci_attr_##_name = { \ |
7c9281d7 DT |
577 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
578 | .show = _show, \ | |
579 | .store = _store, \ | |
580 | }; | |
581 | ||
582 | /* default Control file */ | |
079708b9 | 583 | MCIDEV_ATTR(reset_counters, S_IWUSR, NULL, mci_reset_counters_store); |
7c9281d7 DT |
584 | |
585 | /* default Attribute files */ | |
079708b9 DT |
586 | MCIDEV_ATTR(mc_name, S_IRUGO, mci_ctl_name_show, NULL); |
587 | MCIDEV_ATTR(size_mb, S_IRUGO, mci_size_mb_show, NULL); | |
588 | MCIDEV_ATTR(seconds_since_reset, S_IRUGO, mci_seconds_show, NULL); | |
589 | MCIDEV_ATTR(ue_noinfo_count, S_IRUGO, mci_ue_noinfo_show, NULL); | |
590 | MCIDEV_ATTR(ce_noinfo_count, S_IRUGO, mci_ce_noinfo_show, NULL); | |
591 | MCIDEV_ATTR(ue_count, S_IRUGO, mci_ue_count_show, NULL); | |
592 | MCIDEV_ATTR(ce_count, S_IRUGO, mci_ce_count_show, NULL); | |
7c9281d7 DT |
593 | |
594 | /* memory scrubber attribute file */ | |
079708b9 | 595 | MCIDEV_ATTR(sdram_scrub_rate, S_IRUGO | S_IWUSR, mci_sdram_scrub_rate_show, |
052dfb45 | 596 | mci_sdram_scrub_rate_store); |
7c9281d7 | 597 | |
42a8e397 | 598 | static struct mcidev_sysfs_attribute *mci_attr[] = { |
7c9281d7 DT |
599 | &mci_attr_reset_counters, |
600 | &mci_attr_mc_name, | |
601 | &mci_attr_size_mb, | |
602 | &mci_attr_seconds_since_reset, | |
603 | &mci_attr_ue_noinfo_count, | |
604 | &mci_attr_ce_noinfo_count, | |
605 | &mci_attr_ue_count, | |
606 | &mci_attr_ce_count, | |
607 | &mci_attr_sdram_scrub_rate, | |
608 | NULL | |
609 | }; | |
610 | ||
8096cfaf | 611 | |
7c9281d7 DT |
612 | /* |
613 | * Release of a MC controlling instance | |
8096cfaf DT |
614 | * |
615 | * each MC control instance has the following resources upon entry: | |
616 | * a) a ref count on the top memctl kobj | |
617 | * b) a ref count on this module | |
618 | * | |
619 | * this function must decrement those ref counts and then | |
620 | * issue a free on the instance's memory | |
7c9281d7 | 621 | */ |
8096cfaf | 622 | static void edac_mci_control_release(struct kobject *kobj) |
7c9281d7 DT |
623 | { |
624 | struct mem_ctl_info *mci; | |
625 | ||
626 | mci = to_mci(kobj); | |
8096cfaf DT |
627 | |
628 | debugf0("%s() mci instance idx=%d releasing\n", __func__, mci->mc_idx); | |
629 | ||
630 | /* decrement the module ref count */ | |
631 | module_put(mci->owner); | |
7c9281d7 DT |
632 | } |
633 | ||
634 | static struct kobj_type ktype_mci = { | |
8096cfaf | 635 | .release = edac_mci_control_release, |
7c9281d7 | 636 | .sysfs_ops = &mci_ops, |
079708b9 | 637 | .default_attrs = (struct attribute **)mci_attr, |
7c9281d7 DT |
638 | }; |
639 | ||
8096cfaf DT |
640 | /* EDAC memory controller sysfs kset: |
641 | * /sys/devices/system/edac/mc | |
642 | */ | |
f9fc82ad | 643 | static struct kset *mc_kset; |
8096cfaf DT |
644 | |
645 | /* | |
646 | * edac_mc_register_sysfs_main_kobj | |
647 | * | |
648 | * setups and registers the main kobject for each mci | |
649 | */ | |
650 | int edac_mc_register_sysfs_main_kobj(struct mem_ctl_info *mci) | |
651 | { | |
652 | struct kobject *kobj_mci; | |
653 | int err; | |
654 | ||
655 | debugf1("%s()\n", __func__); | |
656 | ||
657 | kobj_mci = &mci->edac_mci_kobj; | |
658 | ||
659 | /* Init the mci's kobject */ | |
660 | memset(kobj_mci, 0, sizeof(*kobj_mci)); | |
661 | ||
8096cfaf DT |
662 | /* Record which module 'owns' this control structure |
663 | * and bump the ref count of the module | |
664 | */ | |
665 | mci->owner = THIS_MODULE; | |
666 | ||
667 | /* bump ref count on this module */ | |
668 | if (!try_module_get(mci->owner)) { | |
669 | err = -ENODEV; | |
670 | goto fail_out; | |
671 | } | |
672 | ||
b2ed215a | 673 | /* this instance become part of the mc_kset */ |
f9fc82ad | 674 | kobj_mci->kset = mc_kset; |
b2ed215a | 675 | |
8096cfaf | 676 | /* register the mc<id> kobject to the mc_kset */ |
b2ed215a GKH |
677 | err = kobject_init_and_add(kobj_mci, &ktype_mci, NULL, |
678 | "mc%d", mci->mc_idx); | |
8096cfaf DT |
679 | if (err) { |
680 | debugf1("%s()Failed to register '.../edac/mc%d'\n", | |
681 | __func__, mci->mc_idx); | |
682 | goto kobj_reg_fail; | |
683 | } | |
b2ed215a | 684 | kobject_uevent(kobj_mci, KOBJ_ADD); |
8096cfaf DT |
685 | |
686 | /* At this point, to 'free' the control struct, | |
687 | * edac_mc_unregister_sysfs_main_kobj() must be used | |
688 | */ | |
689 | ||
690 | debugf1("%s() Registered '.../edac/mc%d' kobject\n", | |
691 | __func__, mci->mc_idx); | |
692 | ||
693 | return 0; | |
694 | ||
695 | /* Error exit stack */ | |
696 | ||
697 | kobj_reg_fail: | |
698 | module_put(mci->owner); | |
699 | ||
700 | fail_out: | |
701 | return err; | |
702 | } | |
703 | ||
704 | /* | |
705 | * edac_mc_register_sysfs_main_kobj | |
706 | * | |
707 | * tears down and the main mci kobject from the mc_kset | |
708 | */ | |
709 | void edac_mc_unregister_sysfs_main_kobj(struct mem_ctl_info *mci) | |
710 | { | |
bbc560ae MCC |
711 | debugf1("%s()\n", __func__); |
712 | ||
8096cfaf | 713 | /* delete the kobj from the mc_kset */ |
c10997f6 | 714 | kobject_put(&mci->edac_mci_kobj); |
8096cfaf DT |
715 | } |
716 | ||
7c9281d7 DT |
717 | #define EDAC_DEVICE_SYMLINK "device" |
718 | ||
b968759e | 719 | #define grp_to_mci(k) (container_of(k, struct mcidev_sysfs_group_kobj, kobj)->mci) |
cc301b3a MCC |
720 | |
721 | /* MCI show/store functions for top most object */ | |
722 | static ssize_t inst_grp_show(struct kobject *kobj, struct attribute *attr, | |
723 | char *buffer) | |
724 | { | |
725 | struct mem_ctl_info *mem_ctl_info = grp_to_mci(kobj); | |
726 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); | |
727 | ||
728 | debugf1("%s() mem_ctl_info %p\n", __func__, mem_ctl_info); | |
729 | ||
730 | if (mcidev_attr->show) | |
731 | return mcidev_attr->show(mem_ctl_info, buffer); | |
732 | ||
733 | return -EIO; | |
734 | } | |
735 | ||
736 | static ssize_t inst_grp_store(struct kobject *kobj, struct attribute *attr, | |
737 | const char *buffer, size_t count) | |
738 | { | |
739 | struct mem_ctl_info *mem_ctl_info = grp_to_mci(kobj); | |
740 | struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr); | |
741 | ||
742 | debugf1("%s() mem_ctl_info %p\n", __func__, mem_ctl_info); | |
743 | ||
744 | if (mcidev_attr->store) | |
745 | return mcidev_attr->store(mem_ctl_info, buffer, count); | |
746 | ||
747 | return -EIO; | |
748 | } | |
749 | ||
750 | /* No memory to release for this kobj */ | |
751 | static void edac_inst_grp_release(struct kobject *kobj) | |
752 | { | |
b968759e | 753 | struct mcidev_sysfs_group_kobj *grp; |
cc301b3a MCC |
754 | struct mem_ctl_info *mci; |
755 | ||
756 | debugf1("%s()\n", __func__); | |
757 | ||
b968759e | 758 | grp = container_of(kobj, struct mcidev_sysfs_group_kobj, kobj); |
cc301b3a | 759 | mci = grp->mci; |
cc301b3a MCC |
760 | } |
761 | ||
762 | /* Intermediate show/store table */ | |
763 | static struct sysfs_ops inst_grp_ops = { | |
764 | .show = inst_grp_show, | |
765 | .store = inst_grp_store | |
766 | }; | |
767 | ||
768 | /* the kobj_type instance for a instance group */ | |
769 | static struct kobj_type ktype_inst_grp = { | |
770 | .release = edac_inst_grp_release, | |
771 | .sysfs_ops = &inst_grp_ops, | |
cc301b3a MCC |
772 | }; |
773 | ||
774 | ||
42a8e397 | 775 | /* |
8096cfaf | 776 | * edac_create_mci_instance_attributes |
9fa2fc2e MCC |
777 | * create MC driver specific attributes bellow an specified kobj |
778 | * This routine calls itself recursively, in order to create an entire | |
779 | * object tree. | |
42a8e397 | 780 | */ |
cc301b3a | 781 | static int edac_create_mci_instance_attributes(struct mem_ctl_info *mci, |
1288c18f | 782 | const struct mcidev_sysfs_attribute *sysfs_attrib, |
9fa2fc2e | 783 | struct kobject *kobj) |
42a8e397 DT |
784 | { |
785 | int err; | |
42a8e397 | 786 | |
b6a280bb | 787 | debugf4("%s()\n", __func__); |
cc301b3a | 788 | |
9fa2fc2e | 789 | while (sysfs_attrib) { |
b6a280bb | 790 | debugf4("%s() sysfs_attrib = %p\n",__func__, sysfs_attrib); |
9fa2fc2e | 791 | if (sysfs_attrib->grp) { |
b968759e MCC |
792 | struct mcidev_sysfs_group_kobj *grp_kobj; |
793 | ||
794 | grp_kobj = kzalloc(sizeof(*grp_kobj), GFP_KERNEL); | |
795 | if (!grp_kobj) | |
796 | return -ENOMEM; | |
797 | ||
b968759e MCC |
798 | grp_kobj->grp = sysfs_attrib->grp; |
799 | grp_kobj->mci = mci; | |
6fe1108f | 800 | list_add_tail(&grp_kobj->list, &mci->grp_kobj_list); |
c419d921 | 801 | |
cc301b3a MCC |
802 | debugf0("%s() grp %s, mci %p\n", __func__, |
803 | sysfs_attrib->grp->name, mci); | |
804 | ||
b968759e MCC |
805 | err = kobject_init_and_add(&grp_kobj->kobj, |
806 | &ktype_inst_grp, | |
c419d921 | 807 | &mci->edac_mci_kobj, |
9fa2fc2e | 808 | sysfs_attrib->grp->name); |
6fe1108f MCC |
809 | if (err < 0) { |
810 | printk(KERN_ERR "kobject_init_and_add failed: %d\n", err); | |
9fa2fc2e | 811 | return err; |
6fe1108f | 812 | } |
cc301b3a | 813 | err = edac_create_mci_instance_attributes(mci, |
b968759e MCC |
814 | grp_kobj->grp->mcidev_attr, |
815 | &grp_kobj->kobj); | |
cc301b3a | 816 | |
6fe1108f | 817 | if (err < 0) |
9fa2fc2e MCC |
818 | return err; |
819 | } else if (sysfs_attrib->attr.name) { | |
b6a280bb | 820 | debugf4("%s() file %s\n", __func__, |
9fa2fc2e MCC |
821 | sysfs_attrib->attr.name); |
822 | ||
823 | err = sysfs_create_file(kobj, &sysfs_attrib->attr); | |
6fe1108f MCC |
824 | if (err < 0) { |
825 | printk(KERN_ERR "sysfs_create_file failed: %d\n", err); | |
826 | return err; | |
827 | } | |
9fa2fc2e MCC |
828 | } else |
829 | break; | |
42a8e397 | 830 | |
42a8e397 DT |
831 | sysfs_attrib++; |
832 | } | |
833 | ||
834 | return 0; | |
835 | } | |
836 | ||
8096cfaf DT |
837 | /* |
838 | * edac_remove_mci_instance_attributes | |
839 | * remove MC driver specific attributes at the topmost level | |
840 | * directory of this mci instance. | |
841 | */ | |
b968759e | 842 | static void edac_remove_mci_instance_attributes(struct mem_ctl_info *mci, |
1288c18f | 843 | const struct mcidev_sysfs_attribute *sysfs_attrib, |
b968759e | 844 | struct kobject *kobj, int count) |
8096cfaf | 845 | { |
b968759e MCC |
846 | struct mcidev_sysfs_group_kobj *grp_kobj, *tmp; |
847 | ||
cc301b3a MCC |
848 | debugf1("%s()\n", __func__); |
849 | ||
b968759e MCC |
850 | /* |
851 | * loop if there are attributes and until we hit a NULL entry | |
25985edc | 852 | * Remove first all the attributes |
b968759e | 853 | */ |
9fa2fc2e | 854 | while (sysfs_attrib) { |
b6a280bb | 855 | debugf4("%s() sysfs_attrib = %p\n",__func__, sysfs_attrib); |
9fa2fc2e | 856 | if (sysfs_attrib->grp) { |
b6a280bb | 857 | debugf4("%s() seeking for group %s\n", |
6fe1108f MCC |
858 | __func__, sysfs_attrib->grp->name); |
859 | list_for_each_entry(grp_kobj, | |
860 | &mci->grp_kobj_list, list) { | |
b6a280bb | 861 | debugf4("%s() grp_kobj->grp = %p\n",__func__, grp_kobj->grp); |
6fe1108f | 862 | if (grp_kobj->grp == sysfs_attrib->grp) { |
b968759e MCC |
863 | edac_remove_mci_instance_attributes(mci, |
864 | grp_kobj->grp->mcidev_attr, | |
865 | &grp_kobj->kobj, count + 1); | |
b6a280bb | 866 | debugf4("%s() group %s\n", __func__, |
6fe1108f MCC |
867 | sysfs_attrib->grp->name); |
868 | kobject_put(&grp_kobj->kobj); | |
869 | } | |
870 | } | |
b6a280bb | 871 | debugf4("%s() end of seeking for group %s\n", |
6fe1108f | 872 | __func__, sysfs_attrib->grp->name); |
b968759e | 873 | } else if (sysfs_attrib->attr.name) { |
b6a280bb | 874 | debugf4("%s() file %s\n", __func__, |
9fa2fc2e MCC |
875 | sysfs_attrib->attr.name); |
876 | sysfs_remove_file(kobj, &sysfs_attrib->attr); | |
877 | } else | |
878 | break; | |
8096cfaf DT |
879 | sysfs_attrib++; |
880 | } | |
b968759e | 881 | |
6fe1108f MCC |
882 | /* Remove the group objects */ |
883 | if (count) | |
884 | return; | |
885 | list_for_each_entry_safe(grp_kobj, tmp, | |
886 | &mci->grp_kobj_list, list) { | |
887 | list_del(&grp_kobj->list); | |
888 | kfree(grp_kobj); | |
889 | } | |
8096cfaf DT |
890 | } |
891 | ||
892 | ||
7c9281d7 DT |
893 | /* |
894 | * Create a new Memory Controller kobject instance, | |
895 | * mc<id> under the 'mc' directory | |
896 | * | |
897 | * Return: | |
898 | * 0 Success | |
899 | * !0 Failure | |
900 | */ | |
901 | int edac_create_sysfs_mci_device(struct mem_ctl_info *mci) | |
902 | { | |
903 | int i; | |
904 | int err; | |
905 | struct csrow_info *csrow; | |
8096cfaf | 906 | struct kobject *kobj_mci = &mci->edac_mci_kobj; |
7c9281d7 DT |
907 | |
908 | debugf0("%s() idx=%d\n", __func__, mci->mc_idx); | |
7c9281d7 | 909 | |
b968759e MCC |
910 | INIT_LIST_HEAD(&mci->grp_kobj_list); |
911 | ||
7c9281d7 | 912 | /* create a symlink for the device */ |
8096cfaf | 913 | err = sysfs_create_link(kobj_mci, &mci->dev->kobj, |
7c9281d7 | 914 | EDAC_DEVICE_SYMLINK); |
8096cfaf DT |
915 | if (err) { |
916 | debugf1("%s() failure to create symlink\n", __func__); | |
7c9281d7 | 917 | goto fail0; |
8096cfaf | 918 | } |
7c9281d7 | 919 | |
42a8e397 DT |
920 | /* If the low level driver desires some attributes, |
921 | * then create them now for the driver. | |
922 | */ | |
923 | if (mci->mc_driver_sysfs_attributes) { | |
cc301b3a | 924 | err = edac_create_mci_instance_attributes(mci, |
9fa2fc2e MCC |
925 | mci->mc_driver_sysfs_attributes, |
926 | &mci->edac_mci_kobj); | |
8096cfaf DT |
927 | if (err) { |
928 | debugf1("%s() failure to create mci attributes\n", | |
929 | __func__); | |
42a8e397 | 930 | goto fail0; |
8096cfaf | 931 | } |
42a8e397 DT |
932 | } |
933 | ||
8096cfaf | 934 | /* Make directories for each CSROW object under the mc<id> kobject |
7c9281d7 DT |
935 | */ |
936 | for (i = 0; i < mci->nr_csrows; i++) { | |
937 | csrow = &mci->csrows[i]; | |
938 | ||
939 | /* Only expose populated CSROWs */ | |
940 | if (csrow->nr_pages > 0) { | |
8096cfaf DT |
941 | err = edac_create_csrow_object(mci, csrow, i); |
942 | if (err) { | |
943 | debugf1("%s() failure: create csrow %d obj\n", | |
944 | __func__, i); | |
7c9281d7 | 945 | goto fail1; |
8096cfaf | 946 | } |
7c9281d7 DT |
947 | } |
948 | } | |
949 | ||
950 | return 0; | |
951 | ||
952 | /* CSROW error: backout what has already been registered, */ | |
052dfb45 | 953 | fail1: |
079708b9 | 954 | for (i--; i >= 0; i--) { |
7c9281d7 | 955 | if (csrow->nr_pages > 0) { |
c10997f6 | 956 | kobject_put(&mci->csrows[i].kobj); |
7c9281d7 DT |
957 | } |
958 | } | |
959 | ||
8096cfaf | 960 | /* remove the mci instance's attributes, if any */ |
b968759e MCC |
961 | edac_remove_mci_instance_attributes(mci, |
962 | mci->mc_driver_sysfs_attributes, &mci->edac_mci_kobj, 0); | |
8096cfaf DT |
963 | |
964 | /* remove the symlink */ | |
965 | sysfs_remove_link(kobj_mci, EDAC_DEVICE_SYMLINK); | |
966 | ||
052dfb45 | 967 | fail0: |
7c9281d7 DT |
968 | return err; |
969 | } | |
970 | ||
971 | /* | |
972 | * remove a Memory Controller instance | |
973 | */ | |
974 | void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) | |
975 | { | |
976 | int i; | |
977 | ||
978 | debugf0("%s()\n", __func__); | |
979 | ||
980 | /* remove all csrow kobjects */ | |
b6a280bb | 981 | debugf4("%s() unregister this mci kobj\n", __func__); |
7c9281d7 DT |
982 | for (i = 0; i < mci->nr_csrows; i++) { |
983 | if (mci->csrows[i].nr_pages > 0) { | |
8096cfaf | 984 | debugf0("%s() unreg csrow-%d\n", __func__, i); |
c10997f6 | 985 | kobject_put(&mci->csrows[i].kobj); |
7c9281d7 DT |
986 | } |
987 | } | |
988 | ||
6fe1108f MCC |
989 | /* remove this mci instance's attribtes */ |
990 | if (mci->mc_driver_sysfs_attributes) { | |
b6a280bb | 991 | debugf4("%s() unregister mci private attributes\n", __func__); |
6fe1108f MCC |
992 | edac_remove_mci_instance_attributes(mci, |
993 | mci->mc_driver_sysfs_attributes, | |
994 | &mci->edac_mci_kobj, 0); | |
995 | } | |
8096cfaf DT |
996 | |
997 | /* remove the symlink */ | |
b6a280bb | 998 | debugf4("%s() remove_link\n", __func__); |
7c9281d7 | 999 | sysfs_remove_link(&mci->edac_mci_kobj, EDAC_DEVICE_SYMLINK); |
8096cfaf | 1000 | |
8096cfaf | 1001 | /* unregister this instance's kobject */ |
b6a280bb | 1002 | debugf4("%s() remove_mci_instance\n", __func__); |
c10997f6 | 1003 | kobject_put(&mci->edac_mci_kobj); |
7c9281d7 | 1004 | } |
8096cfaf DT |
1005 | |
1006 | ||
1007 | ||
1008 | ||
1009 | /* | |
1010 | * edac_setup_sysfs_mc_kset(void) | |
1011 | * | |
1012 | * Initialize the mc_kset for the 'mc' entry | |
1013 | * This requires creating the top 'mc' directory with a kset | |
1014 | * and its controls/attributes. | |
1015 | * | |
1016 | * To this 'mc' kset, instance 'mci' will be grouped as children. | |
1017 | * | |
1018 | * Return: 0 SUCCESS | |
1019 | * !0 FAILURE error code | |
1020 | */ | |
1021 | int edac_sysfs_setup_mc_kset(void) | |
1022 | { | |
ca755e0a | 1023 | int err = -EINVAL; |
fe5ff8b8 | 1024 | struct bus_type *edac_subsys; |
8096cfaf DT |
1025 | |
1026 | debugf1("%s()\n", __func__); | |
1027 | ||
fe5ff8b8 KS |
1028 | /* get the /sys/devices/system/edac subsys reference */ |
1029 | edac_subsys = edac_get_sysfs_subsys(); | |
1030 | if (edac_subsys == NULL) { | |
1031 | debugf1("%s() no edac_subsys error=%d\n", __func__, err); | |
8096cfaf DT |
1032 | goto fail_out; |
1033 | } | |
1034 | ||
1035 | /* Init the MC's kobject */ | |
fe5ff8b8 | 1036 | mc_kset = kset_create_and_add("mc", NULL, &edac_subsys->dev_root->kobj); |
f9fc82ad AJ |
1037 | if (!mc_kset) { |
1038 | err = -ENOMEM; | |
8096cfaf | 1039 | debugf1("%s() Failed to register '.../edac/mc'\n", __func__); |
30e1f7a8 | 1040 | goto fail_kset; |
8096cfaf DT |
1041 | } |
1042 | ||
1043 | debugf1("%s() Registered '.../edac/mc' kobject\n", __func__); | |
1044 | ||
1045 | return 0; | |
1046 | ||
30e1f7a8 | 1047 | fail_kset: |
fe5ff8b8 | 1048 | edac_put_sysfs_subsys(); |
8096cfaf | 1049 | |
8096cfaf DT |
1050 | fail_out: |
1051 | return err; | |
1052 | } | |
1053 | ||
1054 | /* | |
1055 | * edac_sysfs_teardown_mc_kset | |
1056 | * | |
1057 | * deconstruct the mc_ket for memory controllers | |
1058 | */ | |
1059 | void edac_sysfs_teardown_mc_kset(void) | |
1060 | { | |
f9fc82ad | 1061 | kset_unregister(mc_kset); |
fe5ff8b8 | 1062 | edac_put_sysfs_subsys(); |
8096cfaf DT |
1063 | } |
1064 |