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Douglas Thompson7c9281d2007-07-19 01:49:33 -07001/*
2 * edac_mc kernel module
Douglas Thompson42a8e392007-07-19 01:50:10 -07003 * (C) 2005-2007 Linux Networx (http://lnxi.com)
4 *
Douglas Thompson7c9281d2007-07-19 01:49:33 -07005 * This file may be distributed under the terms of the
6 * GNU General Public License.
7 *
Douglas Thompson42a8e392007-07-19 01:50:10 -07008 * Written Doug Thompson <norsk5@xmission.com> www.softwarebitmaker.com
Douglas Thompson7c9281d2007-07-19 01:49:33 -07009 *
Mauro Carvalho Chehab37e59f82014-02-07 08:03:07 -020010 * (c) 2012-2013 - Mauro Carvalho Chehab
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -030011 * The entire API were re-written, and ported to use struct device
12 *
Douglas Thompson7c9281d2007-07-19 01:49:33 -070013 */
14
Douglas Thompson7c9281d2007-07-19 01:49:33 -070015#include <linux/ctype.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090016#include <linux/slab.h>
Borislav Petkov30e1f7a2010-09-02 17:26:48 +020017#include <linux/edac.h>
Doug Thompson8096cfa2007-07-19 01:50:27 -070018#include <linux/bug.h>
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -030019#include <linux/pm_runtime.h>
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -030020#include <linux/uaccess.h>
Douglas Thompson7c9281d2007-07-19 01:49:33 -070021
Douglas Thompson20bcb7a2007-07-19 01:49:47 -070022#include "edac_core.h"
Douglas Thompson7c9281d2007-07-19 01:49:33 -070023#include "edac_module.h"
24
25/* MC EDAC Controls, setable by module parameter, and sysfs */
Dave Jiang4de78c62007-07-19 01:49:54 -070026static int edac_mc_log_ue = 1;
27static int edac_mc_log_ce = 1;
Douglas Thompsonf0440912007-07-19 01:50:19 -070028static int edac_mc_panic_on_ue;
Dave Jiang4de78c62007-07-19 01:49:54 -070029static int edac_mc_poll_msec = 1000;
Douglas Thompson7c9281d2007-07-19 01:49:33 -070030
31/* Getter functions for above */
Dave Jiang4de78c62007-07-19 01:49:54 -070032int edac_mc_get_log_ue(void)
Douglas Thompson7c9281d2007-07-19 01:49:33 -070033{
Dave Jiang4de78c62007-07-19 01:49:54 -070034 return edac_mc_log_ue;
Douglas Thompson7c9281d2007-07-19 01:49:33 -070035}
36
Dave Jiang4de78c62007-07-19 01:49:54 -070037int edac_mc_get_log_ce(void)
Douglas Thompson7c9281d2007-07-19 01:49:33 -070038{
Dave Jiang4de78c62007-07-19 01:49:54 -070039 return edac_mc_log_ce;
Douglas Thompson7c9281d2007-07-19 01:49:33 -070040}
41
Dave Jiang4de78c62007-07-19 01:49:54 -070042int edac_mc_get_panic_on_ue(void)
Douglas Thompson7c9281d2007-07-19 01:49:33 -070043{
Dave Jiang4de78c62007-07-19 01:49:54 -070044 return edac_mc_panic_on_ue;
Douglas Thompson7c9281d2007-07-19 01:49:33 -070045}
46
Dave Jiang81d87cb2007-07-19 01:49:52 -070047/* this is temporary */
48int edac_mc_get_poll_msec(void)
49{
Dave Jiang4de78c62007-07-19 01:49:54 -070050 return edac_mc_poll_msec;
Douglas Thompson7c9281d2007-07-19 01:49:33 -070051}
52
Arthur Jones096846e2008-07-25 01:49:09 -070053static int edac_set_poll_msec(const char *val, struct kernel_param *kp)
54{
Borislav Petkov9da21b12014-02-03 15:05:13 -050055 unsigned long l;
Arthur Jones096846e2008-07-25 01:49:09 -070056 int ret;
57
58 if (!val)
59 return -EINVAL;
60
Borislav Petkov9da21b12014-02-03 15:05:13 -050061 ret = kstrtoul(val, 0, &l);
Jingoo Hanc542b532013-07-19 16:07:21 +090062 if (ret)
63 return ret;
Borislav Petkov9da21b12014-02-03 15:05:13 -050064
65 if (l < 1000)
Arthur Jones096846e2008-07-25 01:49:09 -070066 return -EINVAL;
Borislav Petkov9da21b12014-02-03 15:05:13 -050067
68 *((unsigned long *)kp->arg) = l;
Arthur Jones096846e2008-07-25 01:49:09 -070069
70 /* notify edac_mc engine to reset the poll period */
71 edac_mc_reset_delay_period(l);
72
73 return 0;
74}
75
Douglas Thompson7c9281d2007-07-19 01:49:33 -070076/* Parameter declarations for above */
Dave Jiang4de78c62007-07-19 01:49:54 -070077module_param(edac_mc_panic_on_ue, int, 0644);
78MODULE_PARM_DESC(edac_mc_panic_on_ue, "Panic on uncorrected error: 0=off 1=on");
79module_param(edac_mc_log_ue, int, 0644);
80MODULE_PARM_DESC(edac_mc_log_ue,
Douglas Thompson079708b2007-07-19 01:49:58 -070081 "Log uncorrectable error to console: 0=off 1=on");
Dave Jiang4de78c62007-07-19 01:49:54 -070082module_param(edac_mc_log_ce, int, 0644);
83MODULE_PARM_DESC(edac_mc_log_ce,
Douglas Thompson079708b2007-07-19 01:49:58 -070084 "Log correctable error to console: 0=off 1=on");
Arthur Jones096846e2008-07-25 01:49:09 -070085module_param_call(edac_mc_poll_msec, edac_set_poll_msec, param_get_int,
86 &edac_mc_poll_msec, 0644);
Dave Jiang4de78c62007-07-19 01:49:54 -070087MODULE_PARM_DESC(edac_mc_poll_msec, "Polling period in milliseconds");
Douglas Thompson7c9281d2007-07-19 01:49:33 -070088
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -030089static struct device *mci_pdev;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -030090
Douglas Thompson7c9281d2007-07-19 01:49:33 -070091/*
92 * various constants for Memory Controllers
93 */
Borislav Petkov8b7719e2013-03-25 15:41:55 +010094static const char * const mem_types[] = {
Douglas Thompson7c9281d2007-07-19 01:49:33 -070095 [MEM_EMPTY] = "Empty",
96 [MEM_RESERVED] = "Reserved",
97 [MEM_UNKNOWN] = "Unknown",
98 [MEM_FPM] = "FPM",
99 [MEM_EDO] = "EDO",
100 [MEM_BEDO] = "BEDO",
101 [MEM_SDR] = "Unbuffered-SDR",
102 [MEM_RDR] = "Registered-SDR",
103 [MEM_DDR] = "Unbuffered-DDR",
104 [MEM_RDDR] = "Registered-DDR",
Dave Jiang1a9b85e2007-07-19 01:49:38 -0700105 [MEM_RMBS] = "RMBS",
106 [MEM_DDR2] = "Unbuffered-DDR2",
107 [MEM_FB_DDR2] = "FullyBuffered-DDR2",
Benjamin Herrenschmidt1d5f7262008-02-07 00:14:52 -0800108 [MEM_RDDR2] = "Registered-DDR2",
Yang Shib1cfebc2009-06-30 11:41:22 -0700109 [MEM_XDR] = "XDR",
110 [MEM_DDR3] = "Unbuffered-DDR3",
Aristeu Rozanski7b827832014-06-18 11:05:01 -0300111 [MEM_RDDR3] = "Registered-DDR3",
112 [MEM_DDR4] = "Unbuffered-DDR4",
113 [MEM_RDDR4] = "Registered-DDR4"
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700114};
115
Borislav Petkov8b7719e2013-03-25 15:41:55 +0100116static const char * const dev_types[] = {
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700117 [DEV_UNKNOWN] = "Unknown",
118 [DEV_X1] = "x1",
119 [DEV_X2] = "x2",
120 [DEV_X4] = "x4",
121 [DEV_X8] = "x8",
122 [DEV_X16] = "x16",
123 [DEV_X32] = "x32",
124 [DEV_X64] = "x64"
125};
126
Borislav Petkov8b7719e2013-03-25 15:41:55 +0100127static const char * const edac_caps[] = {
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700128 [EDAC_UNKNOWN] = "Unknown",
129 [EDAC_NONE] = "None",
130 [EDAC_RESERVED] = "Reserved",
131 [EDAC_PARITY] = "PARITY",
132 [EDAC_EC] = "EC",
133 [EDAC_SECDED] = "SECDED",
134 [EDAC_S2ECD2ED] = "S2ECD2ED",
135 [EDAC_S4ECD4ED] = "S4ECD4ED",
136 [EDAC_S8ECD8ED] = "S8ECD8ED",
137 [EDAC_S16ECD16ED] = "S16ECD16ED"
138};
139
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300140#ifdef CONFIG_EDAC_LEGACY_SYSFS
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300141/*
142 * EDAC sysfs CSROW data structures and methods
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700143 */
144
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300145#define to_csrow(k) container_of(k, struct csrow_info, dev)
146
147/*
148 * We need it to avoid namespace conflicts between the legacy API
149 * and the per-dimm/per-rank one
150 */
151#define DEVICE_ATTR_LEGACY(_name, _mode, _show, _store) \
Stephen Hemmingerfbe2d362013-02-21 21:44:17 -0800152 static struct device_attribute dev_attr_legacy_##_name = __ATTR(_name, _mode, _show, _store)
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300153
154struct dev_ch_attribute {
155 struct device_attribute attr;
156 int channel;
157};
158
159#define DEVICE_CHANNEL(_name, _mode, _show, _store, _var) \
Borislav Petkovf11135d2015-01-30 14:49:04 +0100160 static struct dev_ch_attribute dev_attr_legacy_##_name = \
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300161 { __ATTR(_name, _mode, _show, _store), (_var) }
162
163#define to_channel(k) (container_of(k, struct dev_ch_attribute, attr)->channel)
164
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700165/* Set of more default csrow<id> attribute show/store functions */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300166static ssize_t csrow_ue_count_show(struct device *dev,
167 struct device_attribute *mattr, char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700168{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300169 struct csrow_info *csrow = to_csrow(dev);
170
Douglas Thompson079708b2007-07-19 01:49:58 -0700171 return sprintf(data, "%u\n", csrow->ue_count);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700172}
173
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300174static ssize_t csrow_ce_count_show(struct device *dev,
175 struct device_attribute *mattr, char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700176{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300177 struct csrow_info *csrow = to_csrow(dev);
178
Douglas Thompson079708b2007-07-19 01:49:58 -0700179 return sprintf(data, "%u\n", csrow->ce_count);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700180}
181
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300182static ssize_t csrow_size_show(struct device *dev,
183 struct device_attribute *mattr, char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700184{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300185 struct csrow_info *csrow = to_csrow(dev);
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -0300186 int i;
187 u32 nr_pages = 0;
188
189 for (i = 0; i < csrow->nr_channels; i++)
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300190 nr_pages += csrow->channels[i]->dimm->nr_pages;
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -0300191 return sprintf(data, "%u\n", PAGES_TO_MiB(nr_pages));
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700192}
193
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300194static ssize_t csrow_mem_type_show(struct device *dev,
195 struct device_attribute *mattr, char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700196{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300197 struct csrow_info *csrow = to_csrow(dev);
198
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300199 return sprintf(data, "%s\n", mem_types[csrow->channels[0]->dimm->mtype]);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700200}
201
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300202static ssize_t csrow_dev_type_show(struct device *dev,
203 struct device_attribute *mattr, char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700204{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300205 struct csrow_info *csrow = to_csrow(dev);
206
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300207 return sprintf(data, "%s\n", dev_types[csrow->channels[0]->dimm->dtype]);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700208}
209
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300210static ssize_t csrow_edac_mode_show(struct device *dev,
211 struct device_attribute *mattr,
212 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700213{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300214 struct csrow_info *csrow = to_csrow(dev);
215
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300216 return sprintf(data, "%s\n", edac_caps[csrow->channels[0]->dimm->edac_mode]);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700217}
218
219/* show/store functions for DIMM Label attributes */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300220static ssize_t channel_dimm_label_show(struct device *dev,
221 struct device_attribute *mattr,
222 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700223{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300224 struct csrow_info *csrow = to_csrow(dev);
225 unsigned chan = to_channel(mattr);
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300226 struct rank_info *rank = csrow->channels[chan];
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300227
Arthur Jones124682c2008-07-25 01:49:12 -0700228 /* if field has not been initialized, there is nothing to send */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300229 if (!rank->dimm->label[0])
Arthur Jones124682c2008-07-25 01:49:12 -0700230 return 0;
231
232 return snprintf(data, EDAC_MC_LABEL_LEN, "%s\n",
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300233 rank->dimm->label);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700234}
235
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300236static ssize_t channel_dimm_label_store(struct device *dev,
237 struct device_attribute *mattr,
238 const char *data, size_t count)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700239{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300240 struct csrow_info *csrow = to_csrow(dev);
241 unsigned chan = to_channel(mattr);
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300242 struct rank_info *rank = csrow->channels[chan];
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300243
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700244 ssize_t max_size = 0;
245
Douglas Thompson079708b2007-07-19 01:49:58 -0700246 max_size = min((ssize_t) count, (ssize_t) EDAC_MC_LABEL_LEN - 1);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300247 strncpy(rank->dimm->label, data, max_size);
248 rank->dimm->label[max_size] = '\0';
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700249
250 return max_size;
251}
252
253/* show function for dynamic chX_ce_count attribute */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300254static ssize_t channel_ce_count_show(struct device *dev,
255 struct device_attribute *mattr, char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700256{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300257 struct csrow_info *csrow = to_csrow(dev);
258 unsigned chan = to_channel(mattr);
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300259 struct rank_info *rank = csrow->channels[chan];
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300260
261 return sprintf(data, "%u\n", rank->ce_count);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700262}
263
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300264/* cwrow<id>/attribute files */
265DEVICE_ATTR_LEGACY(size_mb, S_IRUGO, csrow_size_show, NULL);
266DEVICE_ATTR_LEGACY(dev_type, S_IRUGO, csrow_dev_type_show, NULL);
267DEVICE_ATTR_LEGACY(mem_type, S_IRUGO, csrow_mem_type_show, NULL);
268DEVICE_ATTR_LEGACY(edac_mode, S_IRUGO, csrow_edac_mode_show, NULL);
269DEVICE_ATTR_LEGACY(ue_count, S_IRUGO, csrow_ue_count_show, NULL);
270DEVICE_ATTR_LEGACY(ce_count, S_IRUGO, csrow_ce_count_show, NULL);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700271
272/* default attributes of the CSROW<id> object */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300273static struct attribute *csrow_attrs[] = {
274 &dev_attr_legacy_dev_type.attr,
275 &dev_attr_legacy_mem_type.attr,
276 &dev_attr_legacy_edac_mode.attr,
277 &dev_attr_legacy_size_mb.attr,
278 &dev_attr_legacy_ue_count.attr,
279 &dev_attr_legacy_ce_count.attr,
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700280 NULL,
281};
282
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300283static struct attribute_group csrow_attr_grp = {
284 .attrs = csrow_attrs,
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700285};
286
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300287static const struct attribute_group *csrow_attr_groups[] = {
288 &csrow_attr_grp,
289 NULL
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700290};
291
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300292static void csrow_attr_release(struct device *dev)
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300293{
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300294 struct csrow_info *csrow = container_of(dev, struct csrow_info, dev);
295
Joe Perches956b9ba2012-04-29 17:08:39 -0300296 edac_dbg(1, "Releasing csrow device %s\n", dev_name(dev));
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300297 kfree(csrow);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300298}
299
300static struct device_type csrow_attr_type = {
301 .groups = csrow_attr_groups,
302 .release = csrow_attr_release,
303};
304
305/*
306 * possible dynamic channel DIMM Label attribute files
307 *
308 */
309
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300310DEVICE_CHANNEL(ch0_dimm_label, S_IRUGO | S_IWUSR,
311 channel_dimm_label_show, channel_dimm_label_store, 0);
312DEVICE_CHANNEL(ch1_dimm_label, S_IRUGO | S_IWUSR,
313 channel_dimm_label_show, channel_dimm_label_store, 1);
314DEVICE_CHANNEL(ch2_dimm_label, S_IRUGO | S_IWUSR,
315 channel_dimm_label_show, channel_dimm_label_store, 2);
316DEVICE_CHANNEL(ch3_dimm_label, S_IRUGO | S_IWUSR,
317 channel_dimm_label_show, channel_dimm_label_store, 3);
318DEVICE_CHANNEL(ch4_dimm_label, S_IRUGO | S_IWUSR,
319 channel_dimm_label_show, channel_dimm_label_store, 4);
320DEVICE_CHANNEL(ch5_dimm_label, S_IRUGO | S_IWUSR,
321 channel_dimm_label_show, channel_dimm_label_store, 5);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700322
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300323/* Total possible dynamic DIMM Label attribute file table */
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100324static struct attribute *dynamic_csrow_dimm_attr[] = {
325 &dev_attr_legacy_ch0_dimm_label.attr.attr,
326 &dev_attr_legacy_ch1_dimm_label.attr.attr,
327 &dev_attr_legacy_ch2_dimm_label.attr.attr,
328 &dev_attr_legacy_ch3_dimm_label.attr.attr,
329 &dev_attr_legacy_ch4_dimm_label.attr.attr,
330 &dev_attr_legacy_ch5_dimm_label.attr.attr,
331 NULL
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300332};
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700333
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300334/* possible dynamic channel ce_count attribute files */
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530335DEVICE_CHANNEL(ch0_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300336 channel_ce_count_show, NULL, 0);
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530337DEVICE_CHANNEL(ch1_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300338 channel_ce_count_show, NULL, 1);
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530339DEVICE_CHANNEL(ch2_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300340 channel_ce_count_show, NULL, 2);
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530341DEVICE_CHANNEL(ch3_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300342 channel_ce_count_show, NULL, 3);
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530343DEVICE_CHANNEL(ch4_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300344 channel_ce_count_show, NULL, 4);
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530345DEVICE_CHANNEL(ch5_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300346 channel_ce_count_show, NULL, 5);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700347
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300348/* Total possible dynamic ce_count attribute file table */
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100349static struct attribute *dynamic_csrow_ce_count_attr[] = {
350 &dev_attr_legacy_ch0_ce_count.attr.attr,
351 &dev_attr_legacy_ch1_ce_count.attr.attr,
352 &dev_attr_legacy_ch2_ce_count.attr.attr,
353 &dev_attr_legacy_ch3_ce_count.attr.attr,
354 &dev_attr_legacy_ch4_ce_count.attr.attr,
355 &dev_attr_legacy_ch5_ce_count.attr.attr,
356 NULL
357};
358
359static umode_t csrow_dev_is_visible(struct kobject *kobj,
360 struct attribute *attr, int idx)
361{
362 struct device *dev = kobj_to_dev(kobj);
363 struct csrow_info *csrow = container_of(dev, struct csrow_info, dev);
364
365 if (idx >= csrow->nr_channels)
366 return 0;
367 /* Only expose populated DIMMs */
368 if (!csrow->channels[idx]->dimm->nr_pages)
369 return 0;
370 return attr->mode;
371}
372
373
374static const struct attribute_group csrow_dev_dimm_group = {
375 .attrs = dynamic_csrow_dimm_attr,
376 .is_visible = csrow_dev_is_visible,
377};
378
379static const struct attribute_group csrow_dev_ce_count_group = {
380 .attrs = dynamic_csrow_ce_count_attr,
381 .is_visible = csrow_dev_is_visible,
382};
383
384static const struct attribute_group *csrow_dev_groups[] = {
385 &csrow_dev_dimm_group,
386 &csrow_dev_ce_count_group,
387 NULL
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700388};
389
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300390static inline int nr_pages_per_csrow(struct csrow_info *csrow)
391{
392 int chan, nr_pages = 0;
393
394 for (chan = 0; chan < csrow->nr_channels; chan++)
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300395 nr_pages += csrow->channels[chan]->dimm->nr_pages;
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300396
397 return nr_pages;
398}
399
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700400/* Create a CSROW object under specifed edac_mc_device */
Doug Thompson8096cfa2007-07-19 01:50:27 -0700401static int edac_create_csrow_object(struct mem_ctl_info *mci,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300402 struct csrow_info *csrow, int index)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700403{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300404 csrow->dev.type = &csrow_attr_type;
Borislav Petkov88d84ac2013-07-19 12:28:25 +0200405 csrow->dev.bus = mci->bus;
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100406 csrow->dev.groups = csrow_dev_groups;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300407 device_initialize(&csrow->dev);
408 csrow->dev.parent = &mci->dev;
Borislav Petkov921a6892012-09-13 18:46:39 +0200409 csrow->mci = mci;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300410 dev_set_name(&csrow->dev, "csrow%d", index);
411 dev_set_drvdata(&csrow->dev, csrow);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700412
Joe Perches956b9ba2012-04-29 17:08:39 -0300413 edac_dbg(0, "creating (virtual) csrow node %s\n",
414 dev_name(&csrow->dev));
Doug Thompson8096cfa2007-07-19 01:50:27 -0700415
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100416 return device_add(&csrow->dev);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700417}
418
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300419/* Create a CSROW object under specifed edac_mc_device */
420static int edac_create_csrow_objects(struct mem_ctl_info *mci)
421{
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100422 int err, i;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300423 struct csrow_info *csrow;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700424
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300425 for (i = 0; i < mci->nr_csrows; i++) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300426 csrow = mci->csrows[i];
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300427 if (!nr_pages_per_csrow(csrow))
428 continue;
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300429 err = edac_create_csrow_object(mci, mci->csrows[i], i);
Mauro Carvalho Chehab3d958822013-02-15 07:51:25 -0300430 if (err < 0) {
431 edac_dbg(1,
432 "failure: create csrow objects for csrow %d\n",
433 i);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300434 goto error;
Mauro Carvalho Chehab3d958822013-02-15 07:51:25 -0300435 }
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300436 }
437 return 0;
438
439error:
440 for (--i; i >= 0; i--) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300441 csrow = mci->csrows[i];
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300442 if (!nr_pages_per_csrow(csrow))
443 continue;
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300444 put_device(&mci->csrows[i]->dev);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300445 }
446
447 return err;
448}
449
450static void edac_delete_csrow_objects(struct mem_ctl_info *mci)
451{
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100452 int i;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300453 struct csrow_info *csrow;
454
455 for (i = mci->nr_csrows - 1; i >= 0; i--) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300456 csrow = mci->csrows[i];
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300457 if (!nr_pages_per_csrow(csrow))
458 continue;
Lans Zhang44d22e22012-12-24 14:01:34 +0100459 device_unregister(&mci->csrows[i]->dev);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300460 }
461}
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300462#endif
463
464/*
465 * Per-dimm (or per-rank) devices
466 */
467
468#define to_dimm(k) container_of(k, struct dimm_info, dev)
469
470/* show/store functions for DIMM Label attributes */
471static ssize_t dimmdev_location_show(struct device *dev,
472 struct device_attribute *mattr, char *data)
473{
474 struct dimm_info *dimm = to_dimm(dev);
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300475
Mauro Carvalho Chehab6e84d352012-04-30 10:24:43 -0300476 return edac_dimm_info_location(dimm, data, PAGE_SIZE);
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300477}
478
479static ssize_t dimmdev_label_show(struct device *dev,
480 struct device_attribute *mattr, char *data)
481{
482 struct dimm_info *dimm = to_dimm(dev);
483
484 /* if field has not been initialized, there is nothing to send */
485 if (!dimm->label[0])
486 return 0;
487
488 return snprintf(data, EDAC_MC_LABEL_LEN, "%s\n", dimm->label);
489}
490
491static ssize_t dimmdev_label_store(struct device *dev,
492 struct device_attribute *mattr,
493 const char *data,
494 size_t count)
495{
496 struct dimm_info *dimm = to_dimm(dev);
497
498 ssize_t max_size = 0;
499
500 max_size = min((ssize_t) count, (ssize_t) EDAC_MC_LABEL_LEN - 1);
501 strncpy(dimm->label, data, max_size);
502 dimm->label[max_size] = '\0';
503
504 return max_size;
505}
506
507static ssize_t dimmdev_size_show(struct device *dev,
508 struct device_attribute *mattr, char *data)
509{
510 struct dimm_info *dimm = to_dimm(dev);
511
512 return sprintf(data, "%u\n", PAGES_TO_MiB(dimm->nr_pages));
513}
514
515static ssize_t dimmdev_mem_type_show(struct device *dev,
516 struct device_attribute *mattr, char *data)
517{
518 struct dimm_info *dimm = to_dimm(dev);
519
520 return sprintf(data, "%s\n", mem_types[dimm->mtype]);
521}
522
523static ssize_t dimmdev_dev_type_show(struct device *dev,
524 struct device_attribute *mattr, char *data)
525{
526 struct dimm_info *dimm = to_dimm(dev);
527
528 return sprintf(data, "%s\n", dev_types[dimm->dtype]);
529}
530
531static ssize_t dimmdev_edac_mode_show(struct device *dev,
532 struct device_attribute *mattr,
533 char *data)
534{
535 struct dimm_info *dimm = to_dimm(dev);
536
537 return sprintf(data, "%s\n", edac_caps[dimm->edac_mode]);
538}
539
540/* dimm/rank attribute files */
541static DEVICE_ATTR(dimm_label, S_IRUGO | S_IWUSR,
542 dimmdev_label_show, dimmdev_label_store);
543static DEVICE_ATTR(dimm_location, S_IRUGO, dimmdev_location_show, NULL);
544static DEVICE_ATTR(size, S_IRUGO, dimmdev_size_show, NULL);
545static DEVICE_ATTR(dimm_mem_type, S_IRUGO, dimmdev_mem_type_show, NULL);
546static DEVICE_ATTR(dimm_dev_type, S_IRUGO, dimmdev_dev_type_show, NULL);
547static DEVICE_ATTR(dimm_edac_mode, S_IRUGO, dimmdev_edac_mode_show, NULL);
548
549/* attributes of the dimm<id>/rank<id> object */
550static struct attribute *dimm_attrs[] = {
551 &dev_attr_dimm_label.attr,
552 &dev_attr_dimm_location.attr,
553 &dev_attr_size.attr,
554 &dev_attr_dimm_mem_type.attr,
555 &dev_attr_dimm_dev_type.attr,
556 &dev_attr_dimm_edac_mode.attr,
557 NULL,
558};
559
560static struct attribute_group dimm_attr_grp = {
561 .attrs = dimm_attrs,
562};
563
564static const struct attribute_group *dimm_attr_groups[] = {
565 &dimm_attr_grp,
566 NULL
567};
568
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300569static void dimm_attr_release(struct device *dev)
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300570{
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300571 struct dimm_info *dimm = container_of(dev, struct dimm_info, dev);
572
Joe Perches956b9ba2012-04-29 17:08:39 -0300573 edac_dbg(1, "Releasing dimm device %s\n", dev_name(dev));
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300574 kfree(dimm);
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300575}
576
577static struct device_type dimm_attr_type = {
578 .groups = dimm_attr_groups,
579 .release = dimm_attr_release,
580};
581
582/* Create a DIMM object under specifed memory controller device */
583static int edac_create_dimm_object(struct mem_ctl_info *mci,
584 struct dimm_info *dimm,
585 int index)
586{
587 int err;
588 dimm->mci = mci;
589
590 dimm->dev.type = &dimm_attr_type;
Borislav Petkov88d84ac2013-07-19 12:28:25 +0200591 dimm->dev.bus = mci->bus;
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300592 device_initialize(&dimm->dev);
593
594 dimm->dev.parent = &mci->dev;
Mauro Carvalho Chehab9713fae2013-03-11 09:28:48 -0300595 if (mci->csbased)
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300596 dev_set_name(&dimm->dev, "rank%d", index);
597 else
598 dev_set_name(&dimm->dev, "dimm%d", index);
599 dev_set_drvdata(&dimm->dev, dimm);
600 pm_runtime_forbid(&mci->dev);
601
602 err = device_add(&dimm->dev);
603
Joe Perches956b9ba2012-04-29 17:08:39 -0300604 edac_dbg(0, "creating rank/dimm device %s\n", dev_name(&dimm->dev));
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300605
606 return err;
607}
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300608
609/*
610 * Memory controller device
611 */
612
613#define to_mci(k) container_of(k, struct mem_ctl_info, dev)
614
615static ssize_t mci_reset_counters_store(struct device *dev,
616 struct device_attribute *mattr,
Douglas Thompson079708b2007-07-19 01:49:58 -0700617 const char *data, size_t count)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700618{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300619 struct mem_ctl_info *mci = to_mci(dev);
620 int cnt, row, chan, i;
Mauro Carvalho Chehab5926ff52012-02-09 11:05:20 -0300621 mci->ue_mc = 0;
622 mci->ce_mc = 0;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300623 mci->ue_noinfo_count = 0;
624 mci->ce_noinfo_count = 0;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700625
626 for (row = 0; row < mci->nr_csrows; row++) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300627 struct csrow_info *ri = mci->csrows[row];
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700628
629 ri->ue_count = 0;
630 ri->ce_count = 0;
631
632 for (chan = 0; chan < ri->nr_channels; chan++)
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300633 ri->channels[chan]->ce_count = 0;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700634 }
635
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300636 cnt = 1;
637 for (i = 0; i < mci->n_layers; i++) {
638 cnt *= mci->layers[i].size;
639 memset(mci->ce_per_layer[i], 0, cnt * sizeof(u32));
640 memset(mci->ue_per_layer[i], 0, cnt * sizeof(u32));
641 }
642
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700643 mci->start_time = jiffies;
644 return count;
645}
646
Borislav Petkov39094442010-11-24 19:52:09 +0100647/* Memory scrubbing interface:
648 *
649 * A MC driver can limit the scrubbing bandwidth based on the CPU type.
650 * Therefore, ->set_sdram_scrub_rate should be made to return the actual
651 * bandwidth that is accepted or 0 when scrubbing is to be disabled.
652 *
653 * Negative value still means that an error has occurred while setting
654 * the scrub rate.
655 */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300656static ssize_t mci_sdram_scrub_rate_store(struct device *dev,
657 struct device_attribute *mattr,
Borislav Petkoveba042a2010-05-25 18:21:07 +0200658 const char *data, size_t count)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700659{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300660 struct mem_ctl_info *mci = to_mci(dev);
Borislav Petkoveba042a2010-05-25 18:21:07 +0200661 unsigned long bandwidth = 0;
Borislav Petkov39094442010-11-24 19:52:09 +0100662 int new_bw = 0;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700663
Jingoo Hanc7f62fc2013-06-01 16:08:22 +0900664 if (kstrtoul(data, 10, &bandwidth) < 0)
Borislav Petkoveba042a2010-05-25 18:21:07 +0200665 return -EINVAL;
666
Borislav Petkov39094442010-11-24 19:52:09 +0100667 new_bw = mci->set_sdram_scrub_rate(mci, bandwidth);
Markus Trippelsdorf49496032011-04-20 14:28:45 -0400668 if (new_bw < 0) {
669 edac_printk(KERN_WARNING, EDAC_MC,
670 "Error setting scrub rate to: %lu\n", bandwidth);
671 return -EINVAL;
Borislav Petkoveba042a2010-05-25 18:21:07 +0200672 }
Borislav Petkov39094442010-11-24 19:52:09 +0100673
Markus Trippelsdorf49496032011-04-20 14:28:45 -0400674 return count;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700675}
676
Borislav Petkov39094442010-11-24 19:52:09 +0100677/*
678 * ->get_sdram_scrub_rate() return value semantics same as above.
679 */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300680static ssize_t mci_sdram_scrub_rate_show(struct device *dev,
681 struct device_attribute *mattr,
682 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700683{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300684 struct mem_ctl_info *mci = to_mci(dev);
Borislav Petkov39094442010-11-24 19:52:09 +0100685 int bandwidth = 0;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700686
Borislav Petkov39094442010-11-24 19:52:09 +0100687 bandwidth = mci->get_sdram_scrub_rate(mci);
688 if (bandwidth < 0) {
689 edac_printk(KERN_DEBUG, EDAC_MC, "Error reading scrub rate\n");
690 return bandwidth;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700691 }
Borislav Petkoveba042a2010-05-25 18:21:07 +0200692
Borislav Petkov39094442010-11-24 19:52:09 +0100693 return sprintf(data, "%d\n", bandwidth);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700694}
695
696/* default attribute files for the MCI object */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300697static ssize_t mci_ue_count_show(struct device *dev,
698 struct device_attribute *mattr,
699 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700700{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300701 struct mem_ctl_info *mci = to_mci(dev);
702
Mauro Carvalho Chehab5926ff52012-02-09 11:05:20 -0300703 return sprintf(data, "%d\n", mci->ue_mc);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700704}
705
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300706static ssize_t mci_ce_count_show(struct device *dev,
707 struct device_attribute *mattr,
708 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700709{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300710 struct mem_ctl_info *mci = to_mci(dev);
711
Mauro Carvalho Chehab5926ff52012-02-09 11:05:20 -0300712 return sprintf(data, "%d\n", mci->ce_mc);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700713}
714
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300715static ssize_t mci_ce_noinfo_show(struct device *dev,
716 struct device_attribute *mattr,
717 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700718{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300719 struct mem_ctl_info *mci = to_mci(dev);
720
Douglas Thompson079708b2007-07-19 01:49:58 -0700721 return sprintf(data, "%d\n", mci->ce_noinfo_count);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700722}
723
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300724static ssize_t mci_ue_noinfo_show(struct device *dev,
725 struct device_attribute *mattr,
726 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700727{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300728 struct mem_ctl_info *mci = to_mci(dev);
729
Douglas Thompson079708b2007-07-19 01:49:58 -0700730 return sprintf(data, "%d\n", mci->ue_noinfo_count);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700731}
732
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300733static ssize_t mci_seconds_show(struct device *dev,
734 struct device_attribute *mattr,
735 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700736{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300737 struct mem_ctl_info *mci = to_mci(dev);
738
Douglas Thompson079708b2007-07-19 01:49:58 -0700739 return sprintf(data, "%ld\n", (jiffies - mci->start_time) / HZ);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700740}
741
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300742static ssize_t mci_ctl_name_show(struct device *dev,
743 struct device_attribute *mattr,
744 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700745{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300746 struct mem_ctl_info *mci = to_mci(dev);
747
Douglas Thompson079708b2007-07-19 01:49:58 -0700748 return sprintf(data, "%s\n", mci->ctl_name);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700749}
750
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300751static ssize_t mci_size_mb_show(struct device *dev,
752 struct device_attribute *mattr,
753 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700754{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300755 struct mem_ctl_info *mci = to_mci(dev);
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -0300756 int total_pages = 0, csrow_idx, j;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700757
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -0300758 for (csrow_idx = 0; csrow_idx < mci->nr_csrows; csrow_idx++) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300759 struct csrow_info *csrow = mci->csrows[csrow_idx];
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700760
Mauro Carvalho Chehab1eef1282013-03-11 09:07:46 -0300761 for (j = 0; j < csrow->nr_channels; j++) {
762 struct dimm_info *dimm = csrow->channels[j]->dimm;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700763
Mauro Carvalho Chehab1eef1282013-03-11 09:07:46 -0300764 total_pages += dimm->nr_pages;
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -0300765 }
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700766 }
767
Douglas Thompson079708b2007-07-19 01:49:58 -0700768 return sprintf(data, "%u\n", PAGES_TO_MiB(total_pages));
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700769}
770
Mauro Carvalho Chehab8ad6c782012-03-21 17:13:24 -0300771static ssize_t mci_max_location_show(struct device *dev,
772 struct device_attribute *mattr,
773 char *data)
774{
775 struct mem_ctl_info *mci = to_mci(dev);
776 int i;
777 char *p = data;
778
779 for (i = 0; i < mci->n_layers; i++) {
780 p += sprintf(p, "%s %d ",
781 edac_layer_name[mci->layers[i].type],
782 mci->layers[i].size - 1);
783 }
784
785 return p - data;
786}
787
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300788#ifdef CONFIG_EDAC_DEBUG
789static ssize_t edac_fake_inject_write(struct file *file,
790 const char __user *data,
791 size_t count, loff_t *ppos)
792{
793 struct device *dev = file->private_data;
794 struct mem_ctl_info *mci = to_mci(dev);
795 static enum hw_event_mc_err_type type;
Mauro Carvalho Chehab38ced282012-06-12 10:55:57 -0300796 u16 errcount = mci->fake_inject_count;
797
798 if (!errcount)
799 errcount = 1;
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300800
801 type = mci->fake_inject_ue ? HW_EVENT_ERR_UNCORRECTED
802 : HW_EVENT_ERR_CORRECTED;
803
804 printk(KERN_DEBUG
Mauro Carvalho Chehab38ced282012-06-12 10:55:57 -0300805 "Generating %d %s fake error%s to %d.%d.%d to test core handling. NOTE: this won't test the driver-specific decoding logic.\n",
806 errcount,
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300807 (type == HW_EVENT_ERR_UNCORRECTED) ? "UE" : "CE",
Mauro Carvalho Chehab38ced282012-06-12 10:55:57 -0300808 errcount > 1 ? "s" : "",
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300809 mci->fake_inject_layer[0],
810 mci->fake_inject_layer[1],
811 mci->fake_inject_layer[2]
812 );
Mauro Carvalho Chehab38ced282012-06-12 10:55:57 -0300813 edac_mc_handle_error(type, mci, errcount, 0, 0, 0,
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300814 mci->fake_inject_layer[0],
815 mci->fake_inject_layer[1],
816 mci->fake_inject_layer[2],
Mauro Carvalho Chehab03f7eae2012-06-04 11:29:25 -0300817 "FAKE ERROR", "for EDAC testing only");
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300818
819 return count;
820}
821
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300822static const struct file_operations debug_fake_inject_fops = {
Wei Yongjundb7312a2012-10-17 16:32:01 +0800823 .open = simple_open,
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300824 .write = edac_fake_inject_write,
825 .llseek = generic_file_llseek,
826};
827#endif
828
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700829/* default Control file */
Borislav Petkovf11135d2015-01-30 14:49:04 +0100830static DEVICE_ATTR(reset_counters, S_IWUSR, NULL, mci_reset_counters_store);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700831
832/* default Attribute files */
Borislav Petkovf11135d2015-01-30 14:49:04 +0100833static DEVICE_ATTR(mc_name, S_IRUGO, mci_ctl_name_show, NULL);
834static DEVICE_ATTR(size_mb, S_IRUGO, mci_size_mb_show, NULL);
835static DEVICE_ATTR(seconds_since_reset, S_IRUGO, mci_seconds_show, NULL);
836static DEVICE_ATTR(ue_noinfo_count, S_IRUGO, mci_ue_noinfo_show, NULL);
837static DEVICE_ATTR(ce_noinfo_count, S_IRUGO, mci_ce_noinfo_show, NULL);
838static DEVICE_ATTR(ue_count, S_IRUGO, mci_ue_count_show, NULL);
839static DEVICE_ATTR(ce_count, S_IRUGO, mci_ce_count_show, NULL);
840static DEVICE_ATTR(max_location, S_IRUGO, mci_max_location_show, NULL);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700841
842/* memory scrubber attribute file */
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100843DEVICE_ATTR(sdram_scrub_rate, 0, mci_sdram_scrub_rate_show,
844 mci_sdram_scrub_rate_store); /* umode set later in is_visible */
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700845
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300846static struct attribute *mci_attrs[] = {
847 &dev_attr_reset_counters.attr,
848 &dev_attr_mc_name.attr,
849 &dev_attr_size_mb.attr,
850 &dev_attr_seconds_since_reset.attr,
851 &dev_attr_ue_noinfo_count.attr,
852 &dev_attr_ce_noinfo_count.attr,
853 &dev_attr_ue_count.attr,
854 &dev_attr_ce_count.attr,
Mauro Carvalho Chehab8ad6c782012-03-21 17:13:24 -0300855 &dev_attr_max_location.attr,
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100856 &dev_attr_sdram_scrub_rate.attr,
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700857 NULL
858};
859
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100860static umode_t mci_attr_is_visible(struct kobject *kobj,
861 struct attribute *attr, int idx)
862{
863 struct device *dev = kobj_to_dev(kobj);
864 struct mem_ctl_info *mci = to_mci(dev);
865 umode_t mode = 0;
866
867 if (attr != &dev_attr_sdram_scrub_rate.attr)
868 return attr->mode;
869 if (mci->get_sdram_scrub_rate)
870 mode |= S_IRUGO;
871 if (mci->set_sdram_scrub_rate)
872 mode |= S_IWUSR;
873 return mode;
874}
875
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300876static struct attribute_group mci_attr_grp = {
877 .attrs = mci_attrs,
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100878 .is_visible = mci_attr_is_visible,
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700879};
880
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300881static const struct attribute_group *mci_attr_groups[] = {
882 &mci_attr_grp,
883 NULL
Mauro Carvalho Chehabcc301b32009-09-24 16:23:42 -0300884};
885
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300886static void mci_attr_release(struct device *dev)
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300887{
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300888 struct mem_ctl_info *mci = container_of(dev, struct mem_ctl_info, dev);
889
Joe Perches956b9ba2012-04-29 17:08:39 -0300890 edac_dbg(1, "Releasing csrow device %s\n", dev_name(dev));
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300891 kfree(mci);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300892}
893
894static struct device_type mci_attr_type = {
895 .groups = mci_attr_groups,
896 .release = mci_attr_release,
Mauro Carvalho Chehabcc301b32009-09-24 16:23:42 -0300897};
898
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300899#ifdef CONFIG_EDAC_DEBUG
Rob Herringe7930ba2012-06-11 21:32:12 -0500900static struct dentry *edac_debugfs;
901
902int __init edac_debugfs_init(void)
903{
904 edac_debugfs = debugfs_create_dir("edac", NULL);
905 if (IS_ERR(edac_debugfs)) {
906 edac_debugfs = NULL;
907 return -ENOMEM;
908 }
909 return 0;
910}
911
Alexey Khoroshilovc6b97bc2015-02-05 22:12:42 -0800912void edac_debugfs_exit(void)
Rob Herringe7930ba2012-06-11 21:32:12 -0500913{
914 debugfs_remove(edac_debugfs);
915}
916
Rashika Kheria95285932013-12-14 19:30:11 +0530917static int edac_create_debug_nodes(struct mem_ctl_info *mci)
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300918{
919 struct dentry *d, *parent;
920 char name[80];
921 int i;
922
Rob Herringe7930ba2012-06-11 21:32:12 -0500923 if (!edac_debugfs)
924 return -ENODEV;
925
926 d = debugfs_create_dir(mci->dev.kobj.name, edac_debugfs);
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300927 if (!d)
928 return -ENOMEM;
929 parent = d;
930
931 for (i = 0; i < mci->n_layers; i++) {
932 sprintf(name, "fake_inject_%s",
933 edac_layer_name[mci->layers[i].type]);
934 d = debugfs_create_u8(name, S_IRUGO | S_IWUSR, parent,
935 &mci->fake_inject_layer[i]);
936 if (!d)
937 goto nomem;
938 }
939
940 d = debugfs_create_bool("fake_inject_ue", S_IRUGO | S_IWUSR, parent,
941 &mci->fake_inject_ue);
942 if (!d)
943 goto nomem;
944
Mauro Carvalho Chehab38ced282012-06-12 10:55:57 -0300945 d = debugfs_create_u16("fake_inject_count", S_IRUGO | S_IWUSR, parent,
946 &mci->fake_inject_count);
947 if (!d)
948 goto nomem;
949
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300950 d = debugfs_create_file("fake_inject", S_IWUSR, parent,
951 &mci->dev,
952 &debug_fake_inject_fops);
953 if (!d)
954 goto nomem;
955
Rob Herringe7930ba2012-06-11 21:32:12 -0500956 mci->debugfs = parent;
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300957 return 0;
958nomem:
959 debugfs_remove(mci->debugfs);
960 return -ENOMEM;
961}
962#endif
963
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700964/*
965 * Create a new Memory Controller kobject instance,
966 * mc<id> under the 'mc' directory
967 *
968 * Return:
969 * 0 Success
970 * !0 Failure
971 */
Takashi Iwai4e8d2302015-02-04 11:48:52 +0100972int edac_create_sysfs_mci_device(struct mem_ctl_info *mci,
973 const struct attribute_group **groups)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700974{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300975 int i, err;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700976
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300977 /*
978 * The memory controller needs its own bus, in order to avoid
979 * namespace conflicts at /sys/bus/edac.
Douglas Thompson42a8e392007-07-19 01:50:10 -0700980 */
Borislav Petkov88d84ac2013-07-19 12:28:25 +0200981 mci->bus->name = kasprintf(GFP_KERNEL, "mc%d", mci->mc_idx);
982 if (!mci->bus->name)
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300983 return -ENOMEM;
Borislav Petkov88d84ac2013-07-19 12:28:25 +0200984
985 edac_dbg(0, "creating bus %s\n", mci->bus->name);
986
987 err = bus_register(mci->bus);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300988 if (err < 0)
Junjie Mao1bf19502015-01-29 09:13:55 +0800989 goto fail_free_name;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300990
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300991 /* get the /sys/devices/system/edac subsys reference */
992 mci->dev.type = &mci_attr_type;
993 device_initialize(&mci->dev);
994
995 mci->dev.parent = mci_pdev;
Borislav Petkov88d84ac2013-07-19 12:28:25 +0200996 mci->dev.bus = mci->bus;
Takashi Iwai4e8d2302015-02-04 11:48:52 +0100997 mci->dev.groups = groups;
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300998 dev_set_name(&mci->dev, "mc%d", mci->mc_idx);
999 dev_set_drvdata(&mci->dev, mci);
1000 pm_runtime_forbid(&mci->dev);
1001
Joe Perches956b9ba2012-04-29 17:08:39 -03001002 edac_dbg(0, "creating device %s\n", dev_name(&mci->dev));
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001003 err = device_add(&mci->dev);
1004 if (err < 0) {
Mauro Carvalho Chehab3d958822013-02-15 07:51:25 -03001005 edac_dbg(1, "failure: create device %s\n", dev_name(&mci->dev));
Junjie Mao1bf19502015-01-29 09:13:55 +08001006 goto fail_unregister_bus;
Douglas Thompson42a8e392007-07-19 01:50:10 -07001007 }
1008
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001009 /*
1010 * Create the dimm/rank devices
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001011 */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001012 for (i = 0; i < mci->tot_dimms; i++) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001013 struct dimm_info *dimm = mci->dimms[i];
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001014 /* Only expose populated DIMMs */
Junjie Mao1bf19502015-01-29 09:13:55 +08001015 if (!dimm->nr_pages)
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001016 continue;
Junjie Mao1bf19502015-01-29 09:13:55 +08001017
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001018#ifdef CONFIG_EDAC_DEBUG
Joe Perches956b9ba2012-04-29 17:08:39 -03001019 edac_dbg(1, "creating dimm%d, located at ", i);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001020 if (edac_debug_level >= 1) {
1021 int lay;
1022 for (lay = 0; lay < mci->n_layers; lay++)
1023 printk(KERN_CONT "%s %d ",
1024 edac_layer_name[mci->layers[lay].type],
1025 dimm->location[lay]);
1026 printk(KERN_CONT "\n");
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001027 }
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001028#endif
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001029 err = edac_create_dimm_object(mci, dimm, i);
1030 if (err) {
Joe Perches956b9ba2012-04-29 17:08:39 -03001031 edac_dbg(1, "failure: create dimm %d obj\n", i);
Junjie Mao1bf19502015-01-29 09:13:55 +08001032 goto fail_unregister_dimm;
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001033 }
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001034 }
1035
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001036#ifdef CONFIG_EDAC_LEGACY_SYSFS
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001037 err = edac_create_csrow_objects(mci);
1038 if (err < 0)
Junjie Mao1bf19502015-01-29 09:13:55 +08001039 goto fail_unregister_dimm;
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001040#endif
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001041
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -03001042#ifdef CONFIG_EDAC_DEBUG
1043 edac_create_debug_nodes(mci);
1044#endif
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001045 return 0;
1046
Junjie Mao1bf19502015-01-29 09:13:55 +08001047fail_unregister_dimm:
Douglas Thompson079708b2007-07-19 01:49:58 -07001048 for (i--; i >= 0; i--) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001049 struct dimm_info *dimm = mci->dimms[i];
Junjie Mao1bf19502015-01-29 09:13:55 +08001050 if (!dimm->nr_pages)
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001051 continue;
Junjie Mao1bf19502015-01-29 09:13:55 +08001052
Lans Zhang44d22e22012-12-24 14:01:34 +01001053 device_unregister(&dimm->dev);
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001054 }
Lans Zhang44d22e22012-12-24 14:01:34 +01001055 device_unregister(&mci->dev);
Junjie Mao1bf19502015-01-29 09:13:55 +08001056fail_unregister_bus:
Borislav Petkov88d84ac2013-07-19 12:28:25 +02001057 bus_unregister(mci->bus);
Junjie Mao1bf19502015-01-29 09:13:55 +08001058fail_free_name:
Borislav Petkov88d84ac2013-07-19 12:28:25 +02001059 kfree(mci->bus->name);
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001060 return err;
1061}
1062
1063/*
1064 * remove a Memory Controller instance
1065 */
1066void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci)
1067{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001068 int i;
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001069
Joe Perches956b9ba2012-04-29 17:08:39 -03001070 edac_dbg(0, "\n");
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001071
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -03001072#ifdef CONFIG_EDAC_DEBUG
1073 debugfs_remove(mci->debugfs);
1074#endif
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001075#ifdef CONFIG_EDAC_LEGACY_SYSFS
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001076 edac_delete_csrow_objects(mci);
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001077#endif
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -03001078
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001079 for (i = 0; i < mci->tot_dimms; i++) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001080 struct dimm_info *dimm = mci->dimms[i];
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001081 if (dimm->nr_pages == 0)
1082 continue;
Joe Perches956b9ba2012-04-29 17:08:39 -03001083 edac_dbg(0, "removing device %s\n", dev_name(&dimm->dev));
Lans Zhang44d22e22012-12-24 14:01:34 +01001084 device_unregister(&dimm->dev);
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001085 }
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001086}
Doug Thompson8096cfa2007-07-19 01:50:27 -07001087
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001088void edac_unregister_sysfs(struct mem_ctl_info *mci)
Doug Thompson8096cfa2007-07-19 01:50:27 -07001089{
Joe Perches956b9ba2012-04-29 17:08:39 -03001090 edac_dbg(1, "Unregistering device %s\n", dev_name(&mci->dev));
Lans Zhang44d22e22012-12-24 14:01:34 +01001091 device_unregister(&mci->dev);
Borislav Petkov88d84ac2013-07-19 12:28:25 +02001092 bus_unregister(mci->bus);
1093 kfree(mci->bus->name);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001094}
Doug Thompson8096cfa2007-07-19 01:50:27 -07001095
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001096static void mc_attr_release(struct device *dev)
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001097{
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001098 /*
1099 * There's no container structure here, as this is just the mci
1100 * parent device, used to create the /sys/devices/mc sysfs node.
1101 * So, there are no attributes on it.
1102 */
Joe Perches956b9ba2012-04-29 17:08:39 -03001103 edac_dbg(1, "Releasing device %s\n", dev_name(dev));
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001104 kfree(dev);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001105}
1106
1107static struct device_type mc_attr_type = {
1108 .release = mc_attr_release,
1109};
1110/*
1111 * Init/exit code for the module. Basically, creates/removes /sys/class/rc
1112 */
1113int __init edac_mc_sysfs_init(void)
1114{
1115 struct bus_type *edac_subsys;
1116 int err;
Doug Thompson8096cfa2007-07-19 01:50:27 -07001117
Kay Sieversfe5ff8b2011-12-14 15:21:07 -08001118 /* get the /sys/devices/system/edac subsys reference */
1119 edac_subsys = edac_get_sysfs_subsys();
1120 if (edac_subsys == NULL) {
Joe Perches956b9ba2012-04-29 17:08:39 -03001121 edac_dbg(1, "no edac_subsys\n");
Denis Kirjanov2d56b102012-10-25 19:42:58 +04001122 err = -EINVAL;
1123 goto out;
Doug Thompson8096cfa2007-07-19 01:50:27 -07001124 }
1125
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001126 mci_pdev = kzalloc(sizeof(*mci_pdev), GFP_KERNEL);
Denis Kirjanov2d56b102012-10-25 19:42:58 +04001127 if (!mci_pdev) {
1128 err = -ENOMEM;
1129 goto out_put_sysfs;
1130 }
Doug Thompson8096cfa2007-07-19 01:50:27 -07001131
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001132 mci_pdev->bus = edac_subsys;
1133 mci_pdev->type = &mc_attr_type;
1134 device_initialize(mci_pdev);
1135 dev_set_name(mci_pdev, "mc");
1136
1137 err = device_add(mci_pdev);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001138 if (err < 0)
Denis Kirjanov2d56b102012-10-25 19:42:58 +04001139 goto out_dev_free;
Doug Thompson8096cfa2007-07-19 01:50:27 -07001140
Joe Perches956b9ba2012-04-29 17:08:39 -03001141 edac_dbg(0, "device %s created\n", dev_name(mci_pdev));
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001142
Doug Thompson8096cfa2007-07-19 01:50:27 -07001143 return 0;
Denis Kirjanov2d56b102012-10-25 19:42:58 +04001144
1145 out_dev_free:
1146 kfree(mci_pdev);
1147 out_put_sysfs:
1148 edac_put_sysfs_subsys();
1149 out:
1150 return err;
Doug Thompson8096cfa2007-07-19 01:50:27 -07001151}
1152
Alexey Khoroshilovc6b97bc2015-02-05 22:12:42 -08001153void edac_mc_sysfs_exit(void)
Doug Thompson8096cfa2007-07-19 01:50:27 -07001154{
Lans Zhang44d22e22012-12-24 14:01:34 +01001155 device_unregister(mci_pdev);
Kay Sieversfe5ff8b2011-12-14 15:21:07 -08001156 edac_put_sysfs_subsys();
Doug Thompson8096cfa2007-07-19 01:50:27 -07001157}