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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
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700310#define EDAC_NR_CHANNELS 6
311
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300312DEVICE_CHANNEL(ch0_dimm_label, S_IRUGO | S_IWUSR,
313 channel_dimm_label_show, channel_dimm_label_store, 0);
314DEVICE_CHANNEL(ch1_dimm_label, S_IRUGO | S_IWUSR,
315 channel_dimm_label_show, channel_dimm_label_store, 1);
316DEVICE_CHANNEL(ch2_dimm_label, S_IRUGO | S_IWUSR,
317 channel_dimm_label_show, channel_dimm_label_store, 2);
318DEVICE_CHANNEL(ch3_dimm_label, S_IRUGO | S_IWUSR,
319 channel_dimm_label_show, channel_dimm_label_store, 3);
320DEVICE_CHANNEL(ch4_dimm_label, S_IRUGO | S_IWUSR,
321 channel_dimm_label_show, channel_dimm_label_store, 4);
322DEVICE_CHANNEL(ch5_dimm_label, S_IRUGO | S_IWUSR,
323 channel_dimm_label_show, channel_dimm_label_store, 5);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700324
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300325/* Total possible dynamic DIMM Label attribute file table */
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100326static struct attribute *dynamic_csrow_dimm_attr[] = {
327 &dev_attr_legacy_ch0_dimm_label.attr.attr,
328 &dev_attr_legacy_ch1_dimm_label.attr.attr,
329 &dev_attr_legacy_ch2_dimm_label.attr.attr,
330 &dev_attr_legacy_ch3_dimm_label.attr.attr,
331 &dev_attr_legacy_ch4_dimm_label.attr.attr,
332 &dev_attr_legacy_ch5_dimm_label.attr.attr,
333 NULL
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300334};
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700335
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300336/* possible dynamic channel ce_count attribute files */
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530337DEVICE_CHANNEL(ch0_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300338 channel_ce_count_show, NULL, 0);
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530339DEVICE_CHANNEL(ch1_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300340 channel_ce_count_show, NULL, 1);
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530341DEVICE_CHANNEL(ch2_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300342 channel_ce_count_show, NULL, 2);
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530343DEVICE_CHANNEL(ch3_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300344 channel_ce_count_show, NULL, 3);
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530345DEVICE_CHANNEL(ch4_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300346 channel_ce_count_show, NULL, 4);
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530347DEVICE_CHANNEL(ch5_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300348 channel_ce_count_show, NULL, 5);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700349
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300350/* Total possible dynamic ce_count attribute file table */
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100351static struct attribute *dynamic_csrow_ce_count_attr[] = {
352 &dev_attr_legacy_ch0_ce_count.attr.attr,
353 &dev_attr_legacy_ch1_ce_count.attr.attr,
354 &dev_attr_legacy_ch2_ce_count.attr.attr,
355 &dev_attr_legacy_ch3_ce_count.attr.attr,
356 &dev_attr_legacy_ch4_ce_count.attr.attr,
357 &dev_attr_legacy_ch5_ce_count.attr.attr,
358 NULL
359};
360
361static umode_t csrow_dev_is_visible(struct kobject *kobj,
362 struct attribute *attr, int idx)
363{
364 struct device *dev = kobj_to_dev(kobj);
365 struct csrow_info *csrow = container_of(dev, struct csrow_info, dev);
366
367 if (idx >= csrow->nr_channels)
368 return 0;
369 /* Only expose populated DIMMs */
370 if (!csrow->channels[idx]->dimm->nr_pages)
371 return 0;
372 return attr->mode;
373}
374
375
376static const struct attribute_group csrow_dev_dimm_group = {
377 .attrs = dynamic_csrow_dimm_attr,
378 .is_visible = csrow_dev_is_visible,
379};
380
381static const struct attribute_group csrow_dev_ce_count_group = {
382 .attrs = dynamic_csrow_ce_count_attr,
383 .is_visible = csrow_dev_is_visible,
384};
385
386static const struct attribute_group *csrow_dev_groups[] = {
387 &csrow_dev_dimm_group,
388 &csrow_dev_ce_count_group,
389 NULL
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700390};
391
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300392static inline int nr_pages_per_csrow(struct csrow_info *csrow)
393{
394 int chan, nr_pages = 0;
395
396 for (chan = 0; chan < csrow->nr_channels; chan++)
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300397 nr_pages += csrow->channels[chan]->dimm->nr_pages;
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300398
399 return nr_pages;
400}
401
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700402/* Create a CSROW object under specifed edac_mc_device */
Doug Thompson8096cfa2007-07-19 01:50:27 -0700403static int edac_create_csrow_object(struct mem_ctl_info *mci,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300404 struct csrow_info *csrow, int index)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700405{
Jim Snow50043e22014-11-18 14:51:08 +0100406 if (csrow->nr_channels > EDAC_NR_CHANNELS)
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300407 return -ENODEV;
Doug Thompson8096cfa2007-07-19 01:50:27 -0700408
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300409 csrow->dev.type = &csrow_attr_type;
Borislav Petkov88d84ac2013-07-19 12:28:25 +0200410 csrow->dev.bus = mci->bus;
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100411 csrow->dev.groups = csrow_dev_groups;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300412 device_initialize(&csrow->dev);
413 csrow->dev.parent = &mci->dev;
Borislav Petkov921a6892012-09-13 18:46:39 +0200414 csrow->mci = mci;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300415 dev_set_name(&csrow->dev, "csrow%d", index);
416 dev_set_drvdata(&csrow->dev, csrow);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700417
Joe Perches956b9ba2012-04-29 17:08:39 -0300418 edac_dbg(0, "creating (virtual) csrow node %s\n",
419 dev_name(&csrow->dev));
Doug Thompson8096cfa2007-07-19 01:50:27 -0700420
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100421 return device_add(&csrow->dev);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700422}
423
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300424/* Create a CSROW object under specifed edac_mc_device */
425static int edac_create_csrow_objects(struct mem_ctl_info *mci)
426{
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100427 int err, i;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300428 struct csrow_info *csrow;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700429
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300430 for (i = 0; i < mci->nr_csrows; i++) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300431 csrow = mci->csrows[i];
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300432 if (!nr_pages_per_csrow(csrow))
433 continue;
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300434 err = edac_create_csrow_object(mci, mci->csrows[i], i);
Mauro Carvalho Chehab3d958822013-02-15 07:51:25 -0300435 if (err < 0) {
436 edac_dbg(1,
437 "failure: create csrow objects for csrow %d\n",
438 i);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300439 goto error;
Mauro Carvalho Chehab3d958822013-02-15 07:51:25 -0300440 }
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300441 }
442 return 0;
443
444error:
445 for (--i; i >= 0; i--) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300446 csrow = mci->csrows[i];
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300447 if (!nr_pages_per_csrow(csrow))
448 continue;
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300449 put_device(&mci->csrows[i]->dev);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300450 }
451
452 return err;
453}
454
455static void edac_delete_csrow_objects(struct mem_ctl_info *mci)
456{
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100457 int i;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300458 struct csrow_info *csrow;
459
460 for (i = mci->nr_csrows - 1; i >= 0; i--) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300461 csrow = mci->csrows[i];
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300462 if (!nr_pages_per_csrow(csrow))
463 continue;
Lans Zhang44d22e22012-12-24 14:01:34 +0100464 device_unregister(&mci->csrows[i]->dev);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300465 }
466}
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300467#endif
468
469/*
470 * Per-dimm (or per-rank) devices
471 */
472
473#define to_dimm(k) container_of(k, struct dimm_info, dev)
474
475/* show/store functions for DIMM Label attributes */
476static ssize_t dimmdev_location_show(struct device *dev,
477 struct device_attribute *mattr, char *data)
478{
479 struct dimm_info *dimm = to_dimm(dev);
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300480
Mauro Carvalho Chehab6e84d352012-04-30 10:24:43 -0300481 return edac_dimm_info_location(dimm, data, PAGE_SIZE);
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300482}
483
484static ssize_t dimmdev_label_show(struct device *dev,
485 struct device_attribute *mattr, char *data)
486{
487 struct dimm_info *dimm = to_dimm(dev);
488
489 /* if field has not been initialized, there is nothing to send */
490 if (!dimm->label[0])
491 return 0;
492
493 return snprintf(data, EDAC_MC_LABEL_LEN, "%s\n", dimm->label);
494}
495
496static ssize_t dimmdev_label_store(struct device *dev,
497 struct device_attribute *mattr,
498 const char *data,
499 size_t count)
500{
501 struct dimm_info *dimm = to_dimm(dev);
502
503 ssize_t max_size = 0;
504
505 max_size = min((ssize_t) count, (ssize_t) EDAC_MC_LABEL_LEN - 1);
506 strncpy(dimm->label, data, max_size);
507 dimm->label[max_size] = '\0';
508
509 return max_size;
510}
511
512static ssize_t dimmdev_size_show(struct device *dev,
513 struct device_attribute *mattr, char *data)
514{
515 struct dimm_info *dimm = to_dimm(dev);
516
517 return sprintf(data, "%u\n", PAGES_TO_MiB(dimm->nr_pages));
518}
519
520static ssize_t dimmdev_mem_type_show(struct device *dev,
521 struct device_attribute *mattr, char *data)
522{
523 struct dimm_info *dimm = to_dimm(dev);
524
525 return sprintf(data, "%s\n", mem_types[dimm->mtype]);
526}
527
528static ssize_t dimmdev_dev_type_show(struct device *dev,
529 struct device_attribute *mattr, char *data)
530{
531 struct dimm_info *dimm = to_dimm(dev);
532
533 return sprintf(data, "%s\n", dev_types[dimm->dtype]);
534}
535
536static ssize_t dimmdev_edac_mode_show(struct device *dev,
537 struct device_attribute *mattr,
538 char *data)
539{
540 struct dimm_info *dimm = to_dimm(dev);
541
542 return sprintf(data, "%s\n", edac_caps[dimm->edac_mode]);
543}
544
545/* dimm/rank attribute files */
546static DEVICE_ATTR(dimm_label, S_IRUGO | S_IWUSR,
547 dimmdev_label_show, dimmdev_label_store);
548static DEVICE_ATTR(dimm_location, S_IRUGO, dimmdev_location_show, NULL);
549static DEVICE_ATTR(size, S_IRUGO, dimmdev_size_show, NULL);
550static DEVICE_ATTR(dimm_mem_type, S_IRUGO, dimmdev_mem_type_show, NULL);
551static DEVICE_ATTR(dimm_dev_type, S_IRUGO, dimmdev_dev_type_show, NULL);
552static DEVICE_ATTR(dimm_edac_mode, S_IRUGO, dimmdev_edac_mode_show, NULL);
553
554/* attributes of the dimm<id>/rank<id> object */
555static struct attribute *dimm_attrs[] = {
556 &dev_attr_dimm_label.attr,
557 &dev_attr_dimm_location.attr,
558 &dev_attr_size.attr,
559 &dev_attr_dimm_mem_type.attr,
560 &dev_attr_dimm_dev_type.attr,
561 &dev_attr_dimm_edac_mode.attr,
562 NULL,
563};
564
565static struct attribute_group dimm_attr_grp = {
566 .attrs = dimm_attrs,
567};
568
569static const struct attribute_group *dimm_attr_groups[] = {
570 &dimm_attr_grp,
571 NULL
572};
573
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300574static void dimm_attr_release(struct device *dev)
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300575{
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300576 struct dimm_info *dimm = container_of(dev, struct dimm_info, dev);
577
Joe Perches956b9ba2012-04-29 17:08:39 -0300578 edac_dbg(1, "Releasing dimm device %s\n", dev_name(dev));
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300579 kfree(dimm);
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300580}
581
582static struct device_type dimm_attr_type = {
583 .groups = dimm_attr_groups,
584 .release = dimm_attr_release,
585};
586
587/* Create a DIMM object under specifed memory controller device */
588static int edac_create_dimm_object(struct mem_ctl_info *mci,
589 struct dimm_info *dimm,
590 int index)
591{
592 int err;
593 dimm->mci = mci;
594
595 dimm->dev.type = &dimm_attr_type;
Borislav Petkov88d84ac2013-07-19 12:28:25 +0200596 dimm->dev.bus = mci->bus;
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300597 device_initialize(&dimm->dev);
598
599 dimm->dev.parent = &mci->dev;
Mauro Carvalho Chehab9713fae2013-03-11 09:28:48 -0300600 if (mci->csbased)
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300601 dev_set_name(&dimm->dev, "rank%d", index);
602 else
603 dev_set_name(&dimm->dev, "dimm%d", index);
604 dev_set_drvdata(&dimm->dev, dimm);
605 pm_runtime_forbid(&mci->dev);
606
607 err = device_add(&dimm->dev);
608
Joe Perches956b9ba2012-04-29 17:08:39 -0300609 edac_dbg(0, "creating rank/dimm device %s\n", dev_name(&dimm->dev));
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300610
611 return err;
612}
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300613
614/*
615 * Memory controller device
616 */
617
618#define to_mci(k) container_of(k, struct mem_ctl_info, dev)
619
620static ssize_t mci_reset_counters_store(struct device *dev,
621 struct device_attribute *mattr,
Douglas Thompson079708b2007-07-19 01:49:58 -0700622 const char *data, size_t count)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700623{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300624 struct mem_ctl_info *mci = to_mci(dev);
625 int cnt, row, chan, i;
Mauro Carvalho Chehab5926ff52012-02-09 11:05:20 -0300626 mci->ue_mc = 0;
627 mci->ce_mc = 0;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300628 mci->ue_noinfo_count = 0;
629 mci->ce_noinfo_count = 0;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700630
631 for (row = 0; row < mci->nr_csrows; row++) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300632 struct csrow_info *ri = mci->csrows[row];
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700633
634 ri->ue_count = 0;
635 ri->ce_count = 0;
636
637 for (chan = 0; chan < ri->nr_channels; chan++)
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300638 ri->channels[chan]->ce_count = 0;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700639 }
640
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300641 cnt = 1;
642 for (i = 0; i < mci->n_layers; i++) {
643 cnt *= mci->layers[i].size;
644 memset(mci->ce_per_layer[i], 0, cnt * sizeof(u32));
645 memset(mci->ue_per_layer[i], 0, cnt * sizeof(u32));
646 }
647
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700648 mci->start_time = jiffies;
649 return count;
650}
651
Borislav Petkov39094442010-11-24 19:52:09 +0100652/* Memory scrubbing interface:
653 *
654 * A MC driver can limit the scrubbing bandwidth based on the CPU type.
655 * Therefore, ->set_sdram_scrub_rate should be made to return the actual
656 * bandwidth that is accepted or 0 when scrubbing is to be disabled.
657 *
658 * Negative value still means that an error has occurred while setting
659 * the scrub rate.
660 */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300661static ssize_t mci_sdram_scrub_rate_store(struct device *dev,
662 struct device_attribute *mattr,
Borislav Petkoveba042a2010-05-25 18:21:07 +0200663 const char *data, size_t count)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700664{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300665 struct mem_ctl_info *mci = to_mci(dev);
Borislav Petkoveba042a2010-05-25 18:21:07 +0200666 unsigned long bandwidth = 0;
Borislav Petkov39094442010-11-24 19:52:09 +0100667 int new_bw = 0;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700668
Jingoo Hanc7f62fc2013-06-01 16:08:22 +0900669 if (kstrtoul(data, 10, &bandwidth) < 0)
Borislav Petkoveba042a2010-05-25 18:21:07 +0200670 return -EINVAL;
671
Borislav Petkov39094442010-11-24 19:52:09 +0100672 new_bw = mci->set_sdram_scrub_rate(mci, bandwidth);
Markus Trippelsdorf49496032011-04-20 14:28:45 -0400673 if (new_bw < 0) {
674 edac_printk(KERN_WARNING, EDAC_MC,
675 "Error setting scrub rate to: %lu\n", bandwidth);
676 return -EINVAL;
Borislav Petkoveba042a2010-05-25 18:21:07 +0200677 }
Borislav Petkov39094442010-11-24 19:52:09 +0100678
Markus Trippelsdorf49496032011-04-20 14:28:45 -0400679 return count;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700680}
681
Borislav Petkov39094442010-11-24 19:52:09 +0100682/*
683 * ->get_sdram_scrub_rate() return value semantics same as above.
684 */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300685static ssize_t mci_sdram_scrub_rate_show(struct device *dev,
686 struct device_attribute *mattr,
687 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700688{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300689 struct mem_ctl_info *mci = to_mci(dev);
Borislav Petkov39094442010-11-24 19:52:09 +0100690 int bandwidth = 0;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700691
Borislav Petkov39094442010-11-24 19:52:09 +0100692 bandwidth = mci->get_sdram_scrub_rate(mci);
693 if (bandwidth < 0) {
694 edac_printk(KERN_DEBUG, EDAC_MC, "Error reading scrub rate\n");
695 return bandwidth;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700696 }
Borislav Petkoveba042a2010-05-25 18:21:07 +0200697
Borislav Petkov39094442010-11-24 19:52:09 +0100698 return sprintf(data, "%d\n", bandwidth);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700699}
700
701/* default attribute files for the MCI object */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300702static ssize_t mci_ue_count_show(struct device *dev,
703 struct device_attribute *mattr,
704 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700705{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300706 struct mem_ctl_info *mci = to_mci(dev);
707
Mauro Carvalho Chehab5926ff52012-02-09 11:05:20 -0300708 return sprintf(data, "%d\n", mci->ue_mc);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700709}
710
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300711static ssize_t mci_ce_count_show(struct device *dev,
712 struct device_attribute *mattr,
713 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700714{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300715 struct mem_ctl_info *mci = to_mci(dev);
716
Mauro Carvalho Chehab5926ff52012-02-09 11:05:20 -0300717 return sprintf(data, "%d\n", mci->ce_mc);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700718}
719
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300720static ssize_t mci_ce_noinfo_show(struct device *dev,
721 struct device_attribute *mattr,
722 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700723{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300724 struct mem_ctl_info *mci = to_mci(dev);
725
Douglas Thompson079708b2007-07-19 01:49:58 -0700726 return sprintf(data, "%d\n", mci->ce_noinfo_count);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700727}
728
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300729static ssize_t mci_ue_noinfo_show(struct device *dev,
730 struct device_attribute *mattr,
731 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700732{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300733 struct mem_ctl_info *mci = to_mci(dev);
734
Douglas Thompson079708b2007-07-19 01:49:58 -0700735 return sprintf(data, "%d\n", mci->ue_noinfo_count);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700736}
737
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300738static ssize_t mci_seconds_show(struct device *dev,
739 struct device_attribute *mattr,
740 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700741{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300742 struct mem_ctl_info *mci = to_mci(dev);
743
Douglas Thompson079708b2007-07-19 01:49:58 -0700744 return sprintf(data, "%ld\n", (jiffies - mci->start_time) / HZ);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700745}
746
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300747static ssize_t mci_ctl_name_show(struct device *dev,
748 struct device_attribute *mattr,
749 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700750{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300751 struct mem_ctl_info *mci = to_mci(dev);
752
Douglas Thompson079708b2007-07-19 01:49:58 -0700753 return sprintf(data, "%s\n", mci->ctl_name);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700754}
755
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300756static ssize_t mci_size_mb_show(struct device *dev,
757 struct device_attribute *mattr,
758 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700759{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300760 struct mem_ctl_info *mci = to_mci(dev);
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -0300761 int total_pages = 0, csrow_idx, j;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700762
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -0300763 for (csrow_idx = 0; csrow_idx < mci->nr_csrows; csrow_idx++) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300764 struct csrow_info *csrow = mci->csrows[csrow_idx];
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700765
Mauro Carvalho Chehab1eef1282013-03-11 09:07:46 -0300766 for (j = 0; j < csrow->nr_channels; j++) {
767 struct dimm_info *dimm = csrow->channels[j]->dimm;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700768
Mauro Carvalho Chehab1eef1282013-03-11 09:07:46 -0300769 total_pages += dimm->nr_pages;
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -0300770 }
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700771 }
772
Douglas Thompson079708b2007-07-19 01:49:58 -0700773 return sprintf(data, "%u\n", PAGES_TO_MiB(total_pages));
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700774}
775
Mauro Carvalho Chehab8ad6c782012-03-21 17:13:24 -0300776static ssize_t mci_max_location_show(struct device *dev,
777 struct device_attribute *mattr,
778 char *data)
779{
780 struct mem_ctl_info *mci = to_mci(dev);
781 int i;
782 char *p = data;
783
784 for (i = 0; i < mci->n_layers; i++) {
785 p += sprintf(p, "%s %d ",
786 edac_layer_name[mci->layers[i].type],
787 mci->layers[i].size - 1);
788 }
789
790 return p - data;
791}
792
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300793#ifdef CONFIG_EDAC_DEBUG
794static ssize_t edac_fake_inject_write(struct file *file,
795 const char __user *data,
796 size_t count, loff_t *ppos)
797{
798 struct device *dev = file->private_data;
799 struct mem_ctl_info *mci = to_mci(dev);
800 static enum hw_event_mc_err_type type;
Mauro Carvalho Chehab38ced282012-06-12 10:55:57 -0300801 u16 errcount = mci->fake_inject_count;
802
803 if (!errcount)
804 errcount = 1;
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300805
806 type = mci->fake_inject_ue ? HW_EVENT_ERR_UNCORRECTED
807 : HW_EVENT_ERR_CORRECTED;
808
809 printk(KERN_DEBUG
Mauro Carvalho Chehab38ced282012-06-12 10:55:57 -0300810 "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",
811 errcount,
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300812 (type == HW_EVENT_ERR_UNCORRECTED) ? "UE" : "CE",
Mauro Carvalho Chehab38ced282012-06-12 10:55:57 -0300813 errcount > 1 ? "s" : "",
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]
817 );
Mauro Carvalho Chehab38ced282012-06-12 10:55:57 -0300818 edac_mc_handle_error(type, mci, errcount, 0, 0, 0,
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300819 mci->fake_inject_layer[0],
820 mci->fake_inject_layer[1],
821 mci->fake_inject_layer[2],
Mauro Carvalho Chehab03f7eae2012-06-04 11:29:25 -0300822 "FAKE ERROR", "for EDAC testing only");
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300823
824 return count;
825}
826
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300827static const struct file_operations debug_fake_inject_fops = {
Wei Yongjundb7312a2012-10-17 16:32:01 +0800828 .open = simple_open,
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300829 .write = edac_fake_inject_write,
830 .llseek = generic_file_llseek,
831};
832#endif
833
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700834/* default Control file */
Borislav Petkovf11135d2015-01-30 14:49:04 +0100835static DEVICE_ATTR(reset_counters, S_IWUSR, NULL, mci_reset_counters_store);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700836
837/* default Attribute files */
Borislav Petkovf11135d2015-01-30 14:49:04 +0100838static DEVICE_ATTR(mc_name, S_IRUGO, mci_ctl_name_show, NULL);
839static DEVICE_ATTR(size_mb, S_IRUGO, mci_size_mb_show, NULL);
840static DEVICE_ATTR(seconds_since_reset, S_IRUGO, mci_seconds_show, NULL);
841static DEVICE_ATTR(ue_noinfo_count, S_IRUGO, mci_ue_noinfo_show, NULL);
842static DEVICE_ATTR(ce_noinfo_count, S_IRUGO, mci_ce_noinfo_show, NULL);
843static DEVICE_ATTR(ue_count, S_IRUGO, mci_ue_count_show, NULL);
844static DEVICE_ATTR(ce_count, S_IRUGO, mci_ce_count_show, NULL);
845static DEVICE_ATTR(max_location, S_IRUGO, mci_max_location_show, NULL);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700846
847/* memory scrubber attribute file */
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100848DEVICE_ATTR(sdram_scrub_rate, 0, mci_sdram_scrub_rate_show,
849 mci_sdram_scrub_rate_store); /* umode set later in is_visible */
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700850
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300851static struct attribute *mci_attrs[] = {
852 &dev_attr_reset_counters.attr,
853 &dev_attr_mc_name.attr,
854 &dev_attr_size_mb.attr,
855 &dev_attr_seconds_since_reset.attr,
856 &dev_attr_ue_noinfo_count.attr,
857 &dev_attr_ce_noinfo_count.attr,
858 &dev_attr_ue_count.attr,
859 &dev_attr_ce_count.attr,
Mauro Carvalho Chehab8ad6c782012-03-21 17:13:24 -0300860 &dev_attr_max_location.attr,
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100861 &dev_attr_sdram_scrub_rate.attr,
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700862 NULL
863};
864
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100865static umode_t mci_attr_is_visible(struct kobject *kobj,
866 struct attribute *attr, int idx)
867{
868 struct device *dev = kobj_to_dev(kobj);
869 struct mem_ctl_info *mci = to_mci(dev);
870 umode_t mode = 0;
871
872 if (attr != &dev_attr_sdram_scrub_rate.attr)
873 return attr->mode;
874 if (mci->get_sdram_scrub_rate)
875 mode |= S_IRUGO;
876 if (mci->set_sdram_scrub_rate)
877 mode |= S_IWUSR;
878 return mode;
879}
880
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300881static struct attribute_group mci_attr_grp = {
882 .attrs = mci_attrs,
Takashi Iwai2c1946b2015-02-04 11:48:51 +0100883 .is_visible = mci_attr_is_visible,
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700884};
885
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300886static const struct attribute_group *mci_attr_groups[] = {
887 &mci_attr_grp,
888 NULL
Mauro Carvalho Chehabcc301b32009-09-24 16:23:42 -0300889};
890
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300891static void mci_attr_release(struct device *dev)
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300892{
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300893 struct mem_ctl_info *mci = container_of(dev, struct mem_ctl_info, dev);
894
Joe Perches956b9ba2012-04-29 17:08:39 -0300895 edac_dbg(1, "Releasing csrow device %s\n", dev_name(dev));
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300896 kfree(mci);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300897}
898
899static struct device_type mci_attr_type = {
900 .groups = mci_attr_groups,
901 .release = mci_attr_release,
Mauro Carvalho Chehabcc301b32009-09-24 16:23:42 -0300902};
903
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300904#ifdef CONFIG_EDAC_DEBUG
Rob Herringe7930ba2012-06-11 21:32:12 -0500905static struct dentry *edac_debugfs;
906
907int __init edac_debugfs_init(void)
908{
909 edac_debugfs = debugfs_create_dir("edac", NULL);
910 if (IS_ERR(edac_debugfs)) {
911 edac_debugfs = NULL;
912 return -ENOMEM;
913 }
914 return 0;
915}
916
Alexey Khoroshilovc6b97bc2015-02-05 22:12:42 -0800917void edac_debugfs_exit(void)
Rob Herringe7930ba2012-06-11 21:32:12 -0500918{
919 debugfs_remove(edac_debugfs);
920}
921
Rashika Kheria95285932013-12-14 19:30:11 +0530922static int edac_create_debug_nodes(struct mem_ctl_info *mci)
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300923{
924 struct dentry *d, *parent;
925 char name[80];
926 int i;
927
Rob Herringe7930ba2012-06-11 21:32:12 -0500928 if (!edac_debugfs)
929 return -ENODEV;
930
931 d = debugfs_create_dir(mci->dev.kobj.name, edac_debugfs);
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300932 if (!d)
933 return -ENOMEM;
934 parent = d;
935
936 for (i = 0; i < mci->n_layers; i++) {
937 sprintf(name, "fake_inject_%s",
938 edac_layer_name[mci->layers[i].type]);
939 d = debugfs_create_u8(name, S_IRUGO | S_IWUSR, parent,
940 &mci->fake_inject_layer[i]);
941 if (!d)
942 goto nomem;
943 }
944
945 d = debugfs_create_bool("fake_inject_ue", S_IRUGO | S_IWUSR, parent,
946 &mci->fake_inject_ue);
947 if (!d)
948 goto nomem;
949
Mauro Carvalho Chehab38ced282012-06-12 10:55:57 -0300950 d = debugfs_create_u16("fake_inject_count", S_IRUGO | S_IWUSR, parent,
951 &mci->fake_inject_count);
952 if (!d)
953 goto nomem;
954
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300955 d = debugfs_create_file("fake_inject", S_IWUSR, parent,
956 &mci->dev,
957 &debug_fake_inject_fops);
958 if (!d)
959 goto nomem;
960
Rob Herringe7930ba2012-06-11 21:32:12 -0500961 mci->debugfs = parent;
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300962 return 0;
963nomem:
964 debugfs_remove(mci->debugfs);
965 return -ENOMEM;
966}
967#endif
968
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700969/*
970 * Create a new Memory Controller kobject instance,
971 * mc<id> under the 'mc' directory
972 *
973 * Return:
974 * 0 Success
975 * !0 Failure
976 */
Takashi Iwai4e8d2302015-02-04 11:48:52 +0100977int edac_create_sysfs_mci_device(struct mem_ctl_info *mci,
978 const struct attribute_group **groups)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700979{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300980 int i, err;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700981
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300982 /*
983 * The memory controller needs its own bus, in order to avoid
984 * namespace conflicts at /sys/bus/edac.
Douglas Thompson42a8e392007-07-19 01:50:10 -0700985 */
Borislav Petkov88d84ac2013-07-19 12:28:25 +0200986 mci->bus->name = kasprintf(GFP_KERNEL, "mc%d", mci->mc_idx);
987 if (!mci->bus->name)
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300988 return -ENOMEM;
Borislav Petkov88d84ac2013-07-19 12:28:25 +0200989
990 edac_dbg(0, "creating bus %s\n", mci->bus->name);
991
992 err = bus_register(mci->bus);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300993 if (err < 0)
Junjie Mao1bf19502015-01-29 09:13:55 +0800994 goto fail_free_name;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300995
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300996 /* get the /sys/devices/system/edac subsys reference */
997 mci->dev.type = &mci_attr_type;
998 device_initialize(&mci->dev);
999
1000 mci->dev.parent = mci_pdev;
Borislav Petkov88d84ac2013-07-19 12:28:25 +02001001 mci->dev.bus = mci->bus;
Takashi Iwai4e8d2302015-02-04 11:48:52 +01001002 mci->dev.groups = groups;
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001003 dev_set_name(&mci->dev, "mc%d", mci->mc_idx);
1004 dev_set_drvdata(&mci->dev, mci);
1005 pm_runtime_forbid(&mci->dev);
1006
Joe Perches956b9ba2012-04-29 17:08:39 -03001007 edac_dbg(0, "creating device %s\n", dev_name(&mci->dev));
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001008 err = device_add(&mci->dev);
1009 if (err < 0) {
Mauro Carvalho Chehab3d958822013-02-15 07:51:25 -03001010 edac_dbg(1, "failure: create device %s\n", dev_name(&mci->dev));
Junjie Mao1bf19502015-01-29 09:13:55 +08001011 goto fail_unregister_bus;
Douglas Thompson42a8e392007-07-19 01:50:10 -07001012 }
1013
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001014 /*
1015 * Create the dimm/rank devices
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001016 */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001017 for (i = 0; i < mci->tot_dimms; i++) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001018 struct dimm_info *dimm = mci->dimms[i];
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001019 /* Only expose populated DIMMs */
Junjie Mao1bf19502015-01-29 09:13:55 +08001020 if (!dimm->nr_pages)
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001021 continue;
Junjie Mao1bf19502015-01-29 09:13:55 +08001022
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001023#ifdef CONFIG_EDAC_DEBUG
Joe Perches956b9ba2012-04-29 17:08:39 -03001024 edac_dbg(1, "creating dimm%d, located at ", i);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001025 if (edac_debug_level >= 1) {
1026 int lay;
1027 for (lay = 0; lay < mci->n_layers; lay++)
1028 printk(KERN_CONT "%s %d ",
1029 edac_layer_name[mci->layers[lay].type],
1030 dimm->location[lay]);
1031 printk(KERN_CONT "\n");
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001032 }
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001033#endif
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001034 err = edac_create_dimm_object(mci, dimm, i);
1035 if (err) {
Joe Perches956b9ba2012-04-29 17:08:39 -03001036 edac_dbg(1, "failure: create dimm %d obj\n", i);
Junjie Mao1bf19502015-01-29 09:13:55 +08001037 goto fail_unregister_dimm;
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001038 }
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001039 }
1040
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001041#ifdef CONFIG_EDAC_LEGACY_SYSFS
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001042 err = edac_create_csrow_objects(mci);
1043 if (err < 0)
Junjie Mao1bf19502015-01-29 09:13:55 +08001044 goto fail_unregister_dimm;
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001045#endif
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001046
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -03001047#ifdef CONFIG_EDAC_DEBUG
1048 edac_create_debug_nodes(mci);
1049#endif
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001050 return 0;
1051
Junjie Mao1bf19502015-01-29 09:13:55 +08001052fail_unregister_dimm:
Douglas Thompson079708b2007-07-19 01:49:58 -07001053 for (i--; i >= 0; i--) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001054 struct dimm_info *dimm = mci->dimms[i];
Junjie Mao1bf19502015-01-29 09:13:55 +08001055 if (!dimm->nr_pages)
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001056 continue;
Junjie Mao1bf19502015-01-29 09:13:55 +08001057
Lans Zhang44d22e22012-12-24 14:01:34 +01001058 device_unregister(&dimm->dev);
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001059 }
Lans Zhang44d22e22012-12-24 14:01:34 +01001060 device_unregister(&mci->dev);
Junjie Mao1bf19502015-01-29 09:13:55 +08001061fail_unregister_bus:
Borislav Petkov88d84ac2013-07-19 12:28:25 +02001062 bus_unregister(mci->bus);
Junjie Mao1bf19502015-01-29 09:13:55 +08001063fail_free_name:
Borislav Petkov88d84ac2013-07-19 12:28:25 +02001064 kfree(mci->bus->name);
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001065 return err;
1066}
1067
1068/*
1069 * remove a Memory Controller instance
1070 */
1071void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci)
1072{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001073 int i;
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001074
Joe Perches956b9ba2012-04-29 17:08:39 -03001075 edac_dbg(0, "\n");
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001076
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -03001077#ifdef CONFIG_EDAC_DEBUG
1078 debugfs_remove(mci->debugfs);
1079#endif
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001080#ifdef CONFIG_EDAC_LEGACY_SYSFS
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001081 edac_delete_csrow_objects(mci);
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001082#endif
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -03001083
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001084 for (i = 0; i < mci->tot_dimms; i++) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001085 struct dimm_info *dimm = mci->dimms[i];
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001086 if (dimm->nr_pages == 0)
1087 continue;
Joe Perches956b9ba2012-04-29 17:08:39 -03001088 edac_dbg(0, "removing device %s\n", dev_name(&dimm->dev));
Lans Zhang44d22e22012-12-24 14:01:34 +01001089 device_unregister(&dimm->dev);
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001090 }
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001091}
Doug Thompson8096cfa2007-07-19 01:50:27 -07001092
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001093void edac_unregister_sysfs(struct mem_ctl_info *mci)
Doug Thompson8096cfa2007-07-19 01:50:27 -07001094{
Joe Perches956b9ba2012-04-29 17:08:39 -03001095 edac_dbg(1, "Unregistering device %s\n", dev_name(&mci->dev));
Lans Zhang44d22e22012-12-24 14:01:34 +01001096 device_unregister(&mci->dev);
Borislav Petkov88d84ac2013-07-19 12:28:25 +02001097 bus_unregister(mci->bus);
1098 kfree(mci->bus->name);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001099}
Doug Thompson8096cfa2007-07-19 01:50:27 -07001100
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001101static void mc_attr_release(struct device *dev)
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001102{
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001103 /*
1104 * There's no container structure here, as this is just the mci
1105 * parent device, used to create the /sys/devices/mc sysfs node.
1106 * So, there are no attributes on it.
1107 */
Joe Perches956b9ba2012-04-29 17:08:39 -03001108 edac_dbg(1, "Releasing device %s\n", dev_name(dev));
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001109 kfree(dev);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001110}
1111
1112static struct device_type mc_attr_type = {
1113 .release = mc_attr_release,
1114};
1115/*
1116 * Init/exit code for the module. Basically, creates/removes /sys/class/rc
1117 */
1118int __init edac_mc_sysfs_init(void)
1119{
1120 struct bus_type *edac_subsys;
1121 int err;
Doug Thompson8096cfa2007-07-19 01:50:27 -07001122
Kay Sieversfe5ff8b2011-12-14 15:21:07 -08001123 /* get the /sys/devices/system/edac subsys reference */
1124 edac_subsys = edac_get_sysfs_subsys();
1125 if (edac_subsys == NULL) {
Joe Perches956b9ba2012-04-29 17:08:39 -03001126 edac_dbg(1, "no edac_subsys\n");
Denis Kirjanov2d56b102012-10-25 19:42:58 +04001127 err = -EINVAL;
1128 goto out;
Doug Thompson8096cfa2007-07-19 01:50:27 -07001129 }
1130
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001131 mci_pdev = kzalloc(sizeof(*mci_pdev), GFP_KERNEL);
Denis Kirjanov2d56b102012-10-25 19:42:58 +04001132 if (!mci_pdev) {
1133 err = -ENOMEM;
1134 goto out_put_sysfs;
1135 }
Doug Thompson8096cfa2007-07-19 01:50:27 -07001136
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001137 mci_pdev->bus = edac_subsys;
1138 mci_pdev->type = &mc_attr_type;
1139 device_initialize(mci_pdev);
1140 dev_set_name(mci_pdev, "mc");
1141
1142 err = device_add(mci_pdev);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001143 if (err < 0)
Denis Kirjanov2d56b102012-10-25 19:42:58 +04001144 goto out_dev_free;
Doug Thompson8096cfa2007-07-19 01:50:27 -07001145
Joe Perches956b9ba2012-04-29 17:08:39 -03001146 edac_dbg(0, "device %s created\n", dev_name(mci_pdev));
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001147
Doug Thompson8096cfa2007-07-19 01:50:27 -07001148 return 0;
Denis Kirjanov2d56b102012-10-25 19:42:58 +04001149
1150 out_dev_free:
1151 kfree(mci_pdev);
1152 out_put_sysfs:
1153 edac_put_sysfs_subsys();
1154 out:
1155 return err;
Doug Thompson8096cfa2007-07-19 01:50:27 -07001156}
1157
Alexey Khoroshilovc6b97bc2015-02-05 22:12:42 -08001158void edac_mc_sysfs_exit(void)
Doug Thompson8096cfa2007-07-19 01:50:27 -07001159{
Lans Zhang44d22e22012-12-24 14:01:34 +01001160 device_unregister(mci_pdev);
Kay Sieversfe5ff8b2011-12-14 15:21:07 -08001161 edac_put_sysfs_subsys();
Doug Thompson8096cfa2007-07-19 01:50:27 -07001162}