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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",
111 [MEM_RDDR3] = "Registered-DDR3"
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700112};
113
Borislav Petkov8b7719e2013-03-25 15:41:55 +0100114static const char * const dev_types[] = {
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700115 [DEV_UNKNOWN] = "Unknown",
116 [DEV_X1] = "x1",
117 [DEV_X2] = "x2",
118 [DEV_X4] = "x4",
119 [DEV_X8] = "x8",
120 [DEV_X16] = "x16",
121 [DEV_X32] = "x32",
122 [DEV_X64] = "x64"
123};
124
Borislav Petkov8b7719e2013-03-25 15:41:55 +0100125static const char * const edac_caps[] = {
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700126 [EDAC_UNKNOWN] = "Unknown",
127 [EDAC_NONE] = "None",
128 [EDAC_RESERVED] = "Reserved",
129 [EDAC_PARITY] = "PARITY",
130 [EDAC_EC] = "EC",
131 [EDAC_SECDED] = "SECDED",
132 [EDAC_S2ECD2ED] = "S2ECD2ED",
133 [EDAC_S4ECD4ED] = "S4ECD4ED",
134 [EDAC_S8ECD8ED] = "S8ECD8ED",
135 [EDAC_S16ECD16ED] = "S16ECD16ED"
136};
137
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300138#ifdef CONFIG_EDAC_LEGACY_SYSFS
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300139/*
140 * EDAC sysfs CSROW data structures and methods
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700141 */
142
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300143#define to_csrow(k) container_of(k, struct csrow_info, dev)
144
145/*
146 * We need it to avoid namespace conflicts between the legacy API
147 * and the per-dimm/per-rank one
148 */
149#define DEVICE_ATTR_LEGACY(_name, _mode, _show, _store) \
Stephen Hemmingerfbe2d362013-02-21 21:44:17 -0800150 static struct device_attribute dev_attr_legacy_##_name = __ATTR(_name, _mode, _show, _store)
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300151
152struct dev_ch_attribute {
153 struct device_attribute attr;
154 int channel;
155};
156
157#define DEVICE_CHANNEL(_name, _mode, _show, _store, _var) \
158 struct dev_ch_attribute dev_attr_legacy_##_name = \
159 { __ATTR(_name, _mode, _show, _store), (_var) }
160
161#define to_channel(k) (container_of(k, struct dev_ch_attribute, attr)->channel)
162
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700163/* Set of more default csrow<id> attribute show/store functions */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300164static ssize_t csrow_ue_count_show(struct device *dev,
165 struct device_attribute *mattr, char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700166{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300167 struct csrow_info *csrow = to_csrow(dev);
168
Douglas Thompson079708b2007-07-19 01:49:58 -0700169 return sprintf(data, "%u\n", csrow->ue_count);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700170}
171
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300172static ssize_t csrow_ce_count_show(struct device *dev,
173 struct device_attribute *mattr, char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700174{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300175 struct csrow_info *csrow = to_csrow(dev);
176
Douglas Thompson079708b2007-07-19 01:49:58 -0700177 return sprintf(data, "%u\n", csrow->ce_count);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700178}
179
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300180static ssize_t csrow_size_show(struct device *dev,
181 struct device_attribute *mattr, char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700182{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300183 struct csrow_info *csrow = to_csrow(dev);
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -0300184 int i;
185 u32 nr_pages = 0;
186
187 for (i = 0; i < csrow->nr_channels; i++)
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300188 nr_pages += csrow->channels[i]->dimm->nr_pages;
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -0300189 return sprintf(data, "%u\n", PAGES_TO_MiB(nr_pages));
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700190}
191
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300192static ssize_t csrow_mem_type_show(struct device *dev,
193 struct device_attribute *mattr, char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700194{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300195 struct csrow_info *csrow = to_csrow(dev);
196
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300197 return sprintf(data, "%s\n", mem_types[csrow->channels[0]->dimm->mtype]);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700198}
199
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300200static ssize_t csrow_dev_type_show(struct device *dev,
201 struct device_attribute *mattr, char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700202{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300203 struct csrow_info *csrow = to_csrow(dev);
204
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300205 return sprintf(data, "%s\n", dev_types[csrow->channels[0]->dimm->dtype]);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700206}
207
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300208static ssize_t csrow_edac_mode_show(struct device *dev,
209 struct device_attribute *mattr,
210 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700211{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300212 struct csrow_info *csrow = to_csrow(dev);
213
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300214 return sprintf(data, "%s\n", edac_caps[csrow->channels[0]->dimm->edac_mode]);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700215}
216
217/* show/store functions for DIMM Label attributes */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300218static ssize_t channel_dimm_label_show(struct device *dev,
219 struct device_attribute *mattr,
220 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700221{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300222 struct csrow_info *csrow = to_csrow(dev);
223 unsigned chan = to_channel(mattr);
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300224 struct rank_info *rank = csrow->channels[chan];
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300225
Arthur Jones124682c2008-07-25 01:49:12 -0700226 /* if field has not been initialized, there is nothing to send */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300227 if (!rank->dimm->label[0])
Arthur Jones124682c2008-07-25 01:49:12 -0700228 return 0;
229
230 return snprintf(data, EDAC_MC_LABEL_LEN, "%s\n",
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300231 rank->dimm->label);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700232}
233
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300234static ssize_t channel_dimm_label_store(struct device *dev,
235 struct device_attribute *mattr,
236 const char *data, size_t count)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700237{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300238 struct csrow_info *csrow = to_csrow(dev);
239 unsigned chan = to_channel(mattr);
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300240 struct rank_info *rank = csrow->channels[chan];
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300241
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700242 ssize_t max_size = 0;
243
Douglas Thompson079708b2007-07-19 01:49:58 -0700244 max_size = min((ssize_t) count, (ssize_t) EDAC_MC_LABEL_LEN - 1);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300245 strncpy(rank->dimm->label, data, max_size);
246 rank->dimm->label[max_size] = '\0';
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700247
248 return max_size;
249}
250
251/* show function for dynamic chX_ce_count attribute */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300252static ssize_t channel_ce_count_show(struct device *dev,
253 struct device_attribute *mattr, char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700254{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300255 struct csrow_info *csrow = to_csrow(dev);
256 unsigned chan = to_channel(mattr);
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300257 struct rank_info *rank = csrow->channels[chan];
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300258
259 return sprintf(data, "%u\n", rank->ce_count);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700260}
261
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300262/* cwrow<id>/attribute files */
263DEVICE_ATTR_LEGACY(size_mb, S_IRUGO, csrow_size_show, NULL);
264DEVICE_ATTR_LEGACY(dev_type, S_IRUGO, csrow_dev_type_show, NULL);
265DEVICE_ATTR_LEGACY(mem_type, S_IRUGO, csrow_mem_type_show, NULL);
266DEVICE_ATTR_LEGACY(edac_mode, S_IRUGO, csrow_edac_mode_show, NULL);
267DEVICE_ATTR_LEGACY(ue_count, S_IRUGO, csrow_ue_count_show, NULL);
268DEVICE_ATTR_LEGACY(ce_count, S_IRUGO, csrow_ce_count_show, NULL);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700269
270/* default attributes of the CSROW<id> object */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300271static struct attribute *csrow_attrs[] = {
272 &dev_attr_legacy_dev_type.attr,
273 &dev_attr_legacy_mem_type.attr,
274 &dev_attr_legacy_edac_mode.attr,
275 &dev_attr_legacy_size_mb.attr,
276 &dev_attr_legacy_ue_count.attr,
277 &dev_attr_legacy_ce_count.attr,
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700278 NULL,
279};
280
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300281static struct attribute_group csrow_attr_grp = {
282 .attrs = csrow_attrs,
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700283};
284
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300285static const struct attribute_group *csrow_attr_groups[] = {
286 &csrow_attr_grp,
287 NULL
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700288};
289
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300290static void csrow_attr_release(struct device *dev)
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300291{
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300292 struct csrow_info *csrow = container_of(dev, struct csrow_info, dev);
293
Joe Perches956b9ba2012-04-29 17:08:39 -0300294 edac_dbg(1, "Releasing csrow device %s\n", dev_name(dev));
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300295 kfree(csrow);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300296}
297
298static struct device_type csrow_attr_type = {
299 .groups = csrow_attr_groups,
300 .release = csrow_attr_release,
301};
302
303/*
304 * possible dynamic channel DIMM Label attribute files
305 *
306 */
307
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700308#define EDAC_NR_CHANNELS 6
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 */
324static struct device_attribute *dynamic_csrow_dimm_attr[] = {
325 &dev_attr_legacy_ch0_dimm_label.attr,
326 &dev_attr_legacy_ch1_dimm_label.attr,
327 &dev_attr_legacy_ch2_dimm_label.attr,
328 &dev_attr_legacy_ch3_dimm_label.attr,
329 &dev_attr_legacy_ch4_dimm_label.attr,
330 &dev_attr_legacy_ch5_dimm_label.attr
331};
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700332
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300333/* possible dynamic channel ce_count attribute files */
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530334DEVICE_CHANNEL(ch0_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300335 channel_ce_count_show, NULL, 0);
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530336DEVICE_CHANNEL(ch1_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300337 channel_ce_count_show, NULL, 1);
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530338DEVICE_CHANNEL(ch2_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300339 channel_ce_count_show, NULL, 2);
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530340DEVICE_CHANNEL(ch3_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300341 channel_ce_count_show, NULL, 3);
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530342DEVICE_CHANNEL(ch4_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300343 channel_ce_count_show, NULL, 4);
Srivatsa S. Bhatc8c64d12013-04-30 15:17:16 +0530344DEVICE_CHANNEL(ch5_ce_count, S_IRUGO,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300345 channel_ce_count_show, NULL, 5);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700346
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300347/* Total possible dynamic ce_count attribute file table */
348static struct device_attribute *dynamic_csrow_ce_count_attr[] = {
349 &dev_attr_legacy_ch0_ce_count.attr,
350 &dev_attr_legacy_ch1_ce_count.attr,
351 &dev_attr_legacy_ch2_ce_count.attr,
352 &dev_attr_legacy_ch3_ce_count.attr,
353 &dev_attr_legacy_ch4_ce_count.attr,
354 &dev_attr_legacy_ch5_ce_count.attr
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700355};
356
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300357static inline int nr_pages_per_csrow(struct csrow_info *csrow)
358{
359 int chan, nr_pages = 0;
360
361 for (chan = 0; chan < csrow->nr_channels; chan++)
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300362 nr_pages += csrow->channels[chan]->dimm->nr_pages;
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300363
364 return nr_pages;
365}
366
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700367/* Create a CSROW object under specifed edac_mc_device */
Doug Thompson8096cfa2007-07-19 01:50:27 -0700368static int edac_create_csrow_object(struct mem_ctl_info *mci,
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300369 struct csrow_info *csrow, int index)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700370{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300371 int err, chan;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700372
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300373 if (csrow->nr_channels >= EDAC_NR_CHANNELS)
374 return -ENODEV;
Doug Thompson8096cfa2007-07-19 01:50:27 -0700375
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300376 csrow->dev.type = &csrow_attr_type;
Borislav Petkov88d84ac2013-07-19 12:28:25 +0200377 csrow->dev.bus = mci->bus;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300378 device_initialize(&csrow->dev);
379 csrow->dev.parent = &mci->dev;
Borislav Petkov921a6892012-09-13 18:46:39 +0200380 csrow->mci = mci;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300381 dev_set_name(&csrow->dev, "csrow%d", index);
382 dev_set_drvdata(&csrow->dev, csrow);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700383
Joe Perches956b9ba2012-04-29 17:08:39 -0300384 edac_dbg(0, "creating (virtual) csrow node %s\n",
385 dev_name(&csrow->dev));
Doug Thompson8096cfa2007-07-19 01:50:27 -0700386
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300387 err = device_add(&csrow->dev);
388 if (err < 0)
389 return err;
Doug Thompson8096cfa2007-07-19 01:50:27 -0700390
Doug Thompson8096cfa2007-07-19 01:50:27 -0700391 for (chan = 0; chan < csrow->nr_channels; chan++) {
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300392 /* Only expose populated DIMMs */
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300393 if (!csrow->channels[chan]->dimm->nr_pages)
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300394 continue;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300395 err = device_create_file(&csrow->dev,
396 dynamic_csrow_dimm_attr[chan]);
397 if (err < 0)
398 goto error;
399 err = device_create_file(&csrow->dev,
400 dynamic_csrow_ce_count_attr[chan]);
401 if (err < 0) {
402 device_remove_file(&csrow->dev,
403 dynamic_csrow_dimm_attr[chan]);
404 goto error;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700405 }
406 }
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300407
Doug Thompson8096cfa2007-07-19 01:50:27 -0700408 return 0;
409
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300410error:
411 for (--chan; chan >= 0; chan--) {
412 device_remove_file(&csrow->dev,
413 dynamic_csrow_dimm_attr[chan]);
414 device_remove_file(&csrow->dev,
415 dynamic_csrow_ce_count_attr[chan]);
416 }
417 put_device(&csrow->dev);
Doug Thompson8096cfa2007-07-19 01:50:27 -0700418
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700419 return err;
420}
421
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300422/* Create a CSROW object under specifed edac_mc_device */
423static int edac_create_csrow_objects(struct mem_ctl_info *mci)
424{
425 int err, i, chan;
426 struct csrow_info *csrow;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700427
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300428 for (i = 0; i < mci->nr_csrows; i++) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300429 csrow = mci->csrows[i];
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300430 if (!nr_pages_per_csrow(csrow))
431 continue;
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300432 err = edac_create_csrow_object(mci, mci->csrows[i], i);
Mauro Carvalho Chehab3d958822013-02-15 07:51:25 -0300433 if (err < 0) {
434 edac_dbg(1,
435 "failure: create csrow objects for csrow %d\n",
436 i);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300437 goto error;
Mauro Carvalho Chehab3d958822013-02-15 07:51:25 -0300438 }
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300439 }
440 return 0;
441
442error:
443 for (--i; i >= 0; i--) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300444 csrow = mci->csrows[i];
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300445 if (!nr_pages_per_csrow(csrow))
446 continue;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300447 for (chan = csrow->nr_channels - 1; chan >= 0; chan--) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300448 if (!csrow->channels[chan]->dimm->nr_pages)
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300449 continue;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300450 device_remove_file(&csrow->dev,
451 dynamic_csrow_dimm_attr[chan]);
452 device_remove_file(&csrow->dev,
453 dynamic_csrow_ce_count_attr[chan]);
454 }
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300455 put_device(&mci->csrows[i]->dev);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300456 }
457
458 return err;
459}
460
461static void edac_delete_csrow_objects(struct mem_ctl_info *mci)
462{
463 int i, chan;
464 struct csrow_info *csrow;
465
466 for (i = mci->nr_csrows - 1; i >= 0; i--) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300467 csrow = mci->csrows[i];
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300468 if (!nr_pages_per_csrow(csrow))
469 continue;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300470 for (chan = csrow->nr_channels - 1; chan >= 0; chan--) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300471 if (!csrow->channels[chan]->dimm->nr_pages)
Mauro Carvalho Chehabe39f4ea2012-03-29 12:20:22 -0300472 continue;
Joe Perches956b9ba2012-04-29 17:08:39 -0300473 edac_dbg(1, "Removing csrow %d channel %d sysfs nodes\n",
474 i, chan);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300475 device_remove_file(&csrow->dev,
476 dynamic_csrow_dimm_attr[chan]);
477 device_remove_file(&csrow->dev,
478 dynamic_csrow_ce_count_attr[chan]);
479 }
Lans Zhang44d22e22012-12-24 14:01:34 +0100480 device_unregister(&mci->csrows[i]->dev);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300481 }
482}
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300483#endif
484
485/*
486 * Per-dimm (or per-rank) devices
487 */
488
489#define to_dimm(k) container_of(k, struct dimm_info, dev)
490
491/* show/store functions for DIMM Label attributes */
492static ssize_t dimmdev_location_show(struct device *dev,
493 struct device_attribute *mattr, char *data)
494{
495 struct dimm_info *dimm = to_dimm(dev);
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300496
Mauro Carvalho Chehab6e84d352012-04-30 10:24:43 -0300497 return edac_dimm_info_location(dimm, data, PAGE_SIZE);
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300498}
499
500static ssize_t dimmdev_label_show(struct device *dev,
501 struct device_attribute *mattr, char *data)
502{
503 struct dimm_info *dimm = to_dimm(dev);
504
505 /* if field has not been initialized, there is nothing to send */
506 if (!dimm->label[0])
507 return 0;
508
509 return snprintf(data, EDAC_MC_LABEL_LEN, "%s\n", dimm->label);
510}
511
512static ssize_t dimmdev_label_store(struct device *dev,
513 struct device_attribute *mattr,
514 const char *data,
515 size_t count)
516{
517 struct dimm_info *dimm = to_dimm(dev);
518
519 ssize_t max_size = 0;
520
521 max_size = min((ssize_t) count, (ssize_t) EDAC_MC_LABEL_LEN - 1);
522 strncpy(dimm->label, data, max_size);
523 dimm->label[max_size] = '\0';
524
525 return max_size;
526}
527
528static ssize_t dimmdev_size_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, "%u\n", PAGES_TO_MiB(dimm->nr_pages));
534}
535
536static ssize_t dimmdev_mem_type_show(struct device *dev,
537 struct device_attribute *mattr, char *data)
538{
539 struct dimm_info *dimm = to_dimm(dev);
540
541 return sprintf(data, "%s\n", mem_types[dimm->mtype]);
542}
543
544static ssize_t dimmdev_dev_type_show(struct device *dev,
545 struct device_attribute *mattr, char *data)
546{
547 struct dimm_info *dimm = to_dimm(dev);
548
549 return sprintf(data, "%s\n", dev_types[dimm->dtype]);
550}
551
552static ssize_t dimmdev_edac_mode_show(struct device *dev,
553 struct device_attribute *mattr,
554 char *data)
555{
556 struct dimm_info *dimm = to_dimm(dev);
557
558 return sprintf(data, "%s\n", edac_caps[dimm->edac_mode]);
559}
560
561/* dimm/rank attribute files */
562static DEVICE_ATTR(dimm_label, S_IRUGO | S_IWUSR,
563 dimmdev_label_show, dimmdev_label_store);
564static DEVICE_ATTR(dimm_location, S_IRUGO, dimmdev_location_show, NULL);
565static DEVICE_ATTR(size, S_IRUGO, dimmdev_size_show, NULL);
566static DEVICE_ATTR(dimm_mem_type, S_IRUGO, dimmdev_mem_type_show, NULL);
567static DEVICE_ATTR(dimm_dev_type, S_IRUGO, dimmdev_dev_type_show, NULL);
568static DEVICE_ATTR(dimm_edac_mode, S_IRUGO, dimmdev_edac_mode_show, NULL);
569
570/* attributes of the dimm<id>/rank<id> object */
571static struct attribute *dimm_attrs[] = {
572 &dev_attr_dimm_label.attr,
573 &dev_attr_dimm_location.attr,
574 &dev_attr_size.attr,
575 &dev_attr_dimm_mem_type.attr,
576 &dev_attr_dimm_dev_type.attr,
577 &dev_attr_dimm_edac_mode.attr,
578 NULL,
579};
580
581static struct attribute_group dimm_attr_grp = {
582 .attrs = dimm_attrs,
583};
584
585static const struct attribute_group *dimm_attr_groups[] = {
586 &dimm_attr_grp,
587 NULL
588};
589
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300590static void dimm_attr_release(struct device *dev)
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300591{
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300592 struct dimm_info *dimm = container_of(dev, struct dimm_info, dev);
593
Joe Perches956b9ba2012-04-29 17:08:39 -0300594 edac_dbg(1, "Releasing dimm device %s\n", dev_name(dev));
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300595 kfree(dimm);
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300596}
597
598static struct device_type dimm_attr_type = {
599 .groups = dimm_attr_groups,
600 .release = dimm_attr_release,
601};
602
603/* Create a DIMM object under specifed memory controller device */
604static int edac_create_dimm_object(struct mem_ctl_info *mci,
605 struct dimm_info *dimm,
606 int index)
607{
608 int err;
609 dimm->mci = mci;
610
611 dimm->dev.type = &dimm_attr_type;
Borislav Petkov88d84ac2013-07-19 12:28:25 +0200612 dimm->dev.bus = mci->bus;
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300613 device_initialize(&dimm->dev);
614
615 dimm->dev.parent = &mci->dev;
Mauro Carvalho Chehab9713fae2013-03-11 09:28:48 -0300616 if (mci->csbased)
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300617 dev_set_name(&dimm->dev, "rank%d", index);
618 else
619 dev_set_name(&dimm->dev, "dimm%d", index);
620 dev_set_drvdata(&dimm->dev, dimm);
621 pm_runtime_forbid(&mci->dev);
622
623 err = device_add(&dimm->dev);
624
Joe Perches956b9ba2012-04-29 17:08:39 -0300625 edac_dbg(0, "creating rank/dimm device %s\n", dev_name(&dimm->dev));
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -0300626
627 return err;
628}
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300629
630/*
631 * Memory controller device
632 */
633
634#define to_mci(k) container_of(k, struct mem_ctl_info, dev)
635
636static ssize_t mci_reset_counters_store(struct device *dev,
637 struct device_attribute *mattr,
Douglas Thompson079708b2007-07-19 01:49:58 -0700638 const char *data, size_t count)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700639{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300640 struct mem_ctl_info *mci = to_mci(dev);
641 int cnt, row, chan, i;
Mauro Carvalho Chehab5926ff52012-02-09 11:05:20 -0300642 mci->ue_mc = 0;
643 mci->ce_mc = 0;
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300644 mci->ue_noinfo_count = 0;
645 mci->ce_noinfo_count = 0;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700646
647 for (row = 0; row < mci->nr_csrows; row++) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300648 struct csrow_info *ri = mci->csrows[row];
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700649
650 ri->ue_count = 0;
651 ri->ce_count = 0;
652
653 for (chan = 0; chan < ri->nr_channels; chan++)
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300654 ri->channels[chan]->ce_count = 0;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700655 }
656
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300657 cnt = 1;
658 for (i = 0; i < mci->n_layers; i++) {
659 cnt *= mci->layers[i].size;
660 memset(mci->ce_per_layer[i], 0, cnt * sizeof(u32));
661 memset(mci->ue_per_layer[i], 0, cnt * sizeof(u32));
662 }
663
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700664 mci->start_time = jiffies;
665 return count;
666}
667
Borislav Petkov39094442010-11-24 19:52:09 +0100668/* Memory scrubbing interface:
669 *
670 * A MC driver can limit the scrubbing bandwidth based on the CPU type.
671 * Therefore, ->set_sdram_scrub_rate should be made to return the actual
672 * bandwidth that is accepted or 0 when scrubbing is to be disabled.
673 *
674 * Negative value still means that an error has occurred while setting
675 * the scrub rate.
676 */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300677static ssize_t mci_sdram_scrub_rate_store(struct device *dev,
678 struct device_attribute *mattr,
Borislav Petkoveba042a2010-05-25 18:21:07 +0200679 const char *data, size_t count)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700680{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300681 struct mem_ctl_info *mci = to_mci(dev);
Borislav Petkoveba042a2010-05-25 18:21:07 +0200682 unsigned long bandwidth = 0;
Borislav Petkov39094442010-11-24 19:52:09 +0100683 int new_bw = 0;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700684
Jingoo Hanc7f62fc2013-06-01 16:08:22 +0900685 if (kstrtoul(data, 10, &bandwidth) < 0)
Borislav Petkoveba042a2010-05-25 18:21:07 +0200686 return -EINVAL;
687
Borislav Petkov39094442010-11-24 19:52:09 +0100688 new_bw = mci->set_sdram_scrub_rate(mci, bandwidth);
Markus Trippelsdorf49496032011-04-20 14:28:45 -0400689 if (new_bw < 0) {
690 edac_printk(KERN_WARNING, EDAC_MC,
691 "Error setting scrub rate to: %lu\n", bandwidth);
692 return -EINVAL;
Borislav Petkoveba042a2010-05-25 18:21:07 +0200693 }
Borislav Petkov39094442010-11-24 19:52:09 +0100694
Markus Trippelsdorf49496032011-04-20 14:28:45 -0400695 return count;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700696}
697
Borislav Petkov39094442010-11-24 19:52:09 +0100698/*
699 * ->get_sdram_scrub_rate() return value semantics same as above.
700 */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300701static ssize_t mci_sdram_scrub_rate_show(struct device *dev,
702 struct device_attribute *mattr,
703 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700704{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300705 struct mem_ctl_info *mci = to_mci(dev);
Borislav Petkov39094442010-11-24 19:52:09 +0100706 int bandwidth = 0;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700707
Borislav Petkov39094442010-11-24 19:52:09 +0100708 bandwidth = mci->get_sdram_scrub_rate(mci);
709 if (bandwidth < 0) {
710 edac_printk(KERN_DEBUG, EDAC_MC, "Error reading scrub rate\n");
711 return bandwidth;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700712 }
Borislav Petkoveba042a2010-05-25 18:21:07 +0200713
Borislav Petkov39094442010-11-24 19:52:09 +0100714 return sprintf(data, "%d\n", bandwidth);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700715}
716
717/* default attribute files for the MCI object */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300718static ssize_t mci_ue_count_show(struct device *dev,
719 struct device_attribute *mattr,
720 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700721{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300722 struct mem_ctl_info *mci = to_mci(dev);
723
Mauro Carvalho Chehab5926ff52012-02-09 11:05:20 -0300724 return sprintf(data, "%d\n", mci->ue_mc);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700725}
726
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300727static ssize_t mci_ce_count_show(struct device *dev,
728 struct device_attribute *mattr,
729 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700730{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300731 struct mem_ctl_info *mci = to_mci(dev);
732
Mauro Carvalho Chehab5926ff52012-02-09 11:05:20 -0300733 return sprintf(data, "%d\n", mci->ce_mc);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700734}
735
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300736static ssize_t mci_ce_noinfo_show(struct device *dev,
737 struct device_attribute *mattr,
738 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700739{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300740 struct mem_ctl_info *mci = to_mci(dev);
741
Douglas Thompson079708b2007-07-19 01:49:58 -0700742 return sprintf(data, "%d\n", mci->ce_noinfo_count);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700743}
744
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300745static ssize_t mci_ue_noinfo_show(struct device *dev,
746 struct device_attribute *mattr,
747 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700748{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300749 struct mem_ctl_info *mci = to_mci(dev);
750
Douglas Thompson079708b2007-07-19 01:49:58 -0700751 return sprintf(data, "%d\n", mci->ue_noinfo_count);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700752}
753
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300754static ssize_t mci_seconds_show(struct device *dev,
755 struct device_attribute *mattr,
756 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700757{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300758 struct mem_ctl_info *mci = to_mci(dev);
759
Douglas Thompson079708b2007-07-19 01:49:58 -0700760 return sprintf(data, "%ld\n", (jiffies - mci->start_time) / HZ);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700761}
762
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300763static ssize_t mci_ctl_name_show(struct device *dev,
764 struct device_attribute *mattr,
765 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700766{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300767 struct mem_ctl_info *mci = to_mci(dev);
768
Douglas Thompson079708b2007-07-19 01:49:58 -0700769 return sprintf(data, "%s\n", mci->ctl_name);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700770}
771
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300772static ssize_t mci_size_mb_show(struct device *dev,
773 struct device_attribute *mattr,
774 char *data)
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700775{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300776 struct mem_ctl_info *mci = to_mci(dev);
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -0300777 int total_pages = 0, csrow_idx, j;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700778
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -0300779 for (csrow_idx = 0; csrow_idx < mci->nr_csrows; csrow_idx++) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300780 struct csrow_info *csrow = mci->csrows[csrow_idx];
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700781
Mauro Carvalho Chehab1eef1282013-03-11 09:07:46 -0300782 for (j = 0; j < csrow->nr_channels; j++) {
783 struct dimm_info *dimm = csrow->channels[j]->dimm;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700784
Mauro Carvalho Chehab1eef1282013-03-11 09:07:46 -0300785 total_pages += dimm->nr_pages;
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -0300786 }
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700787 }
788
Douglas Thompson079708b2007-07-19 01:49:58 -0700789 return sprintf(data, "%u\n", PAGES_TO_MiB(total_pages));
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700790}
791
Mauro Carvalho Chehab8ad6c782012-03-21 17:13:24 -0300792static ssize_t mci_max_location_show(struct device *dev,
793 struct device_attribute *mattr,
794 char *data)
795{
796 struct mem_ctl_info *mci = to_mci(dev);
797 int i;
798 char *p = data;
799
800 for (i = 0; i < mci->n_layers; i++) {
801 p += sprintf(p, "%s %d ",
802 edac_layer_name[mci->layers[i].type],
803 mci->layers[i].size - 1);
804 }
805
806 return p - data;
807}
808
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300809#ifdef CONFIG_EDAC_DEBUG
810static ssize_t edac_fake_inject_write(struct file *file,
811 const char __user *data,
812 size_t count, loff_t *ppos)
813{
814 struct device *dev = file->private_data;
815 struct mem_ctl_info *mci = to_mci(dev);
816 static enum hw_event_mc_err_type type;
Mauro Carvalho Chehab38ced282012-06-12 10:55:57 -0300817 u16 errcount = mci->fake_inject_count;
818
819 if (!errcount)
820 errcount = 1;
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300821
822 type = mci->fake_inject_ue ? HW_EVENT_ERR_UNCORRECTED
823 : HW_EVENT_ERR_CORRECTED;
824
825 printk(KERN_DEBUG
Mauro Carvalho Chehab38ced282012-06-12 10:55:57 -0300826 "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",
827 errcount,
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300828 (type == HW_EVENT_ERR_UNCORRECTED) ? "UE" : "CE",
Mauro Carvalho Chehab38ced282012-06-12 10:55:57 -0300829 errcount > 1 ? "s" : "",
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300830 mci->fake_inject_layer[0],
831 mci->fake_inject_layer[1],
832 mci->fake_inject_layer[2]
833 );
Mauro Carvalho Chehab38ced282012-06-12 10:55:57 -0300834 edac_mc_handle_error(type, mci, errcount, 0, 0, 0,
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300835 mci->fake_inject_layer[0],
836 mci->fake_inject_layer[1],
837 mci->fake_inject_layer[2],
Mauro Carvalho Chehab03f7eae2012-06-04 11:29:25 -0300838 "FAKE ERROR", "for EDAC testing only");
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300839
840 return count;
841}
842
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300843static const struct file_operations debug_fake_inject_fops = {
Wei Yongjundb7312a2012-10-17 16:32:01 +0800844 .open = simple_open,
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300845 .write = edac_fake_inject_write,
846 .llseek = generic_file_llseek,
847};
848#endif
849
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700850/* default Control file */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300851DEVICE_ATTR(reset_counters, S_IWUSR, NULL, mci_reset_counters_store);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700852
853/* default Attribute files */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300854DEVICE_ATTR(mc_name, S_IRUGO, mci_ctl_name_show, NULL);
855DEVICE_ATTR(size_mb, S_IRUGO, mci_size_mb_show, NULL);
856DEVICE_ATTR(seconds_since_reset, S_IRUGO, mci_seconds_show, NULL);
857DEVICE_ATTR(ue_noinfo_count, S_IRUGO, mci_ue_noinfo_show, NULL);
858DEVICE_ATTR(ce_noinfo_count, S_IRUGO, mci_ce_noinfo_show, NULL);
859DEVICE_ATTR(ue_count, S_IRUGO, mci_ue_count_show, NULL);
860DEVICE_ATTR(ce_count, S_IRUGO, mci_ce_count_show, NULL);
Mauro Carvalho Chehab8ad6c782012-03-21 17:13:24 -0300861DEVICE_ATTR(max_location, S_IRUGO, mci_max_location_show, NULL);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700862
863/* memory scrubber attribute file */
Mauro Carvalho Chehabe7100472013-02-19 08:04:55 -0300864DEVICE_ATTR(sdram_scrub_rate, 0, NULL, NULL);
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700865
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300866static struct attribute *mci_attrs[] = {
867 &dev_attr_reset_counters.attr,
868 &dev_attr_mc_name.attr,
869 &dev_attr_size_mb.attr,
870 &dev_attr_seconds_since_reset.attr,
871 &dev_attr_ue_noinfo_count.attr,
872 &dev_attr_ce_noinfo_count.attr,
873 &dev_attr_ue_count.attr,
874 &dev_attr_ce_count.attr,
Mauro Carvalho Chehab8ad6c782012-03-21 17:13:24 -0300875 &dev_attr_max_location.attr,
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700876 NULL
877};
878
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300879static struct attribute_group mci_attr_grp = {
880 .attrs = mci_attrs,
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700881};
882
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300883static const struct attribute_group *mci_attr_groups[] = {
884 &mci_attr_grp,
885 NULL
Mauro Carvalho Chehabcc301b32009-09-24 16:23:42 -0300886};
887
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300888static void mci_attr_release(struct device *dev)
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300889{
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300890 struct mem_ctl_info *mci = container_of(dev, struct mem_ctl_info, dev);
891
Joe Perches956b9ba2012-04-29 17:08:39 -0300892 edac_dbg(1, "Releasing csrow device %s\n", dev_name(dev));
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300893 kfree(mci);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300894}
895
896static struct device_type mci_attr_type = {
897 .groups = mci_attr_groups,
898 .release = mci_attr_release,
Mauro Carvalho Chehabcc301b32009-09-24 16:23:42 -0300899};
900
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300901#ifdef CONFIG_EDAC_DEBUG
Rob Herringe7930ba2012-06-11 21:32:12 -0500902static struct dentry *edac_debugfs;
903
904int __init edac_debugfs_init(void)
905{
906 edac_debugfs = debugfs_create_dir("edac", NULL);
907 if (IS_ERR(edac_debugfs)) {
908 edac_debugfs = NULL;
909 return -ENOMEM;
910 }
911 return 0;
912}
913
914void __exit edac_debugfs_exit(void)
915{
916 debugfs_remove(edac_debugfs);
917}
918
Rashika Kheria95285932013-12-14 19:30:11 +0530919static int edac_create_debug_nodes(struct mem_ctl_info *mci)
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300920{
921 struct dentry *d, *parent;
922 char name[80];
923 int i;
924
Rob Herringe7930ba2012-06-11 21:32:12 -0500925 if (!edac_debugfs)
926 return -ENODEV;
927
928 d = debugfs_create_dir(mci->dev.kobj.name, edac_debugfs);
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300929 if (!d)
930 return -ENOMEM;
931 parent = d;
932
933 for (i = 0; i < mci->n_layers; i++) {
934 sprintf(name, "fake_inject_%s",
935 edac_layer_name[mci->layers[i].type]);
936 d = debugfs_create_u8(name, S_IRUGO | S_IWUSR, parent,
937 &mci->fake_inject_layer[i]);
938 if (!d)
939 goto nomem;
940 }
941
942 d = debugfs_create_bool("fake_inject_ue", S_IRUGO | S_IWUSR, parent,
943 &mci->fake_inject_ue);
944 if (!d)
945 goto nomem;
946
Mauro Carvalho Chehab38ced282012-06-12 10:55:57 -0300947 d = debugfs_create_u16("fake_inject_count", S_IRUGO | S_IWUSR, parent,
948 &mci->fake_inject_count);
949 if (!d)
950 goto nomem;
951
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300952 d = debugfs_create_file("fake_inject", S_IWUSR, parent,
953 &mci->dev,
954 &debug_fake_inject_fops);
955 if (!d)
956 goto nomem;
957
Rob Herringe7930ba2012-06-11 21:32:12 -0500958 mci->debugfs = parent;
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -0300959 return 0;
960nomem:
961 debugfs_remove(mci->debugfs);
962 return -ENOMEM;
963}
964#endif
965
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700966/*
967 * Create a new Memory Controller kobject instance,
968 * mc<id> under the 'mc' directory
969 *
970 * Return:
971 * 0 Success
972 * !0 Failure
973 */
974int edac_create_sysfs_mci_device(struct mem_ctl_info *mci)
975{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300976 int i, err;
Douglas Thompson7c9281d2007-07-19 01:49:33 -0700977
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300978 /*
979 * The memory controller needs its own bus, in order to avoid
980 * namespace conflicts at /sys/bus/edac.
Douglas Thompson42a8e392007-07-19 01:50:10 -0700981 */
Borislav Petkov88d84ac2013-07-19 12:28:25 +0200982 mci->bus->name = kasprintf(GFP_KERNEL, "mc%d", mci->mc_idx);
983 if (!mci->bus->name)
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300984 return -ENOMEM;
Borislav Petkov88d84ac2013-07-19 12:28:25 +0200985
986 edac_dbg(0, "creating bus %s\n", mci->bus->name);
987
988 err = bus_register(mci->bus);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -0300989 if (err < 0)
990 return err;
991
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -0300992 /* get the /sys/devices/system/edac subsys reference */
993 mci->dev.type = &mci_attr_type;
994 device_initialize(&mci->dev);
995
996 mci->dev.parent = mci_pdev;
Borislav Petkov88d84ac2013-07-19 12:28:25 +0200997 mci->dev.bus = mci->bus;
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));
Borislav Petkov88d84ac2013-07-19 12:28:25 +02001006 bus_unregister(mci->bus);
1007 kfree(mci->bus->name);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001008 return err;
Douglas Thompson42a8e392007-07-19 01:50:10 -07001009 }
1010
Mauro Carvalho Chehabe7100472013-02-19 08:04:55 -03001011 if (mci->set_sdram_scrub_rate || mci->get_sdram_scrub_rate) {
1012 if (mci->get_sdram_scrub_rate) {
1013 dev_attr_sdram_scrub_rate.attr.mode |= S_IRUGO;
1014 dev_attr_sdram_scrub_rate.show = &mci_sdram_scrub_rate_show;
1015 }
1016 if (mci->set_sdram_scrub_rate) {
1017 dev_attr_sdram_scrub_rate.attr.mode |= S_IWUSR;
1018 dev_attr_sdram_scrub_rate.store = &mci_sdram_scrub_rate_store;
1019 }
1020 err = device_create_file(&mci->dev,
1021 &dev_attr_sdram_scrub_rate);
1022 if (err) {
1023 edac_dbg(1, "failure: create sdram_scrub_rate\n");
1024 goto fail2;
1025 }
1026 }
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001027 /*
1028 * Create the dimm/rank devices
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001029 */
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001030 for (i = 0; i < mci->tot_dimms; i++) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001031 struct dimm_info *dimm = mci->dimms[i];
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001032 /* Only expose populated DIMMs */
1033 if (dimm->nr_pages == 0)
1034 continue;
1035#ifdef CONFIG_EDAC_DEBUG
Joe Perches956b9ba2012-04-29 17:08:39 -03001036 edac_dbg(1, "creating dimm%d, located at ", i);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001037 if (edac_debug_level >= 1) {
1038 int lay;
1039 for (lay = 0; lay < mci->n_layers; lay++)
1040 printk(KERN_CONT "%s %d ",
1041 edac_layer_name[mci->layers[lay].type],
1042 dimm->location[lay]);
1043 printk(KERN_CONT "\n");
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001044 }
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001045#endif
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001046 err = edac_create_dimm_object(mci, dimm, i);
1047 if (err) {
Joe Perches956b9ba2012-04-29 17:08:39 -03001048 edac_dbg(1, "failure: create dimm %d obj\n", i);
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001049 goto fail;
1050 }
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001051 }
1052
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001053#ifdef CONFIG_EDAC_LEGACY_SYSFS
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001054 err = edac_create_csrow_objects(mci);
1055 if (err < 0)
1056 goto fail;
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001057#endif
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001058
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -03001059#ifdef CONFIG_EDAC_DEBUG
1060 edac_create_debug_nodes(mci);
1061#endif
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001062 return 0;
1063
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001064fail:
Douglas Thompson079708b2007-07-19 01:49:58 -07001065 for (i--; i >= 0; i--) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001066 struct dimm_info *dimm = mci->dimms[i];
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001067 if (dimm->nr_pages == 0)
1068 continue;
Lans Zhang44d22e22012-12-24 14:01:34 +01001069 device_unregister(&dimm->dev);
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001070 }
Mauro Carvalho Chehabe7100472013-02-19 08:04:55 -03001071fail2:
Lans Zhang44d22e22012-12-24 14:01:34 +01001072 device_unregister(&mci->dev);
Borislav Petkov88d84ac2013-07-19 12:28:25 +02001073 bus_unregister(mci->bus);
1074 kfree(mci->bus->name);
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001075 return err;
1076}
1077
1078/*
1079 * remove a Memory Controller instance
1080 */
1081void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci)
1082{
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001083 int i;
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001084
Joe Perches956b9ba2012-04-29 17:08:39 -03001085 edac_dbg(0, "\n");
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001086
Mauro Carvalho Chehab452a6bf2012-03-26 09:35:11 -03001087#ifdef CONFIG_EDAC_DEBUG
1088 debugfs_remove(mci->debugfs);
1089#endif
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001090#ifdef CONFIG_EDAC_LEGACY_SYSFS
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001091 edac_delete_csrow_objects(mci);
Mauro Carvalho Chehab19974712012-03-21 17:06:53 -03001092#endif
Mauro Carvalho Chehaba895bf82012-01-28 09:09:38 -03001093
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001094 for (i = 0; i < mci->tot_dimms; i++) {
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001095 struct dimm_info *dimm = mci->dimms[i];
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001096 if (dimm->nr_pages == 0)
1097 continue;
Joe Perches956b9ba2012-04-29 17:08:39 -03001098 edac_dbg(0, "removing device %s\n", dev_name(&dimm->dev));
Lans Zhang44d22e22012-12-24 14:01:34 +01001099 device_unregister(&dimm->dev);
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001100 }
Douglas Thompson7c9281d2007-07-19 01:49:33 -07001101}
Doug Thompson8096cfa2007-07-19 01:50:27 -07001102
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001103void edac_unregister_sysfs(struct mem_ctl_info *mci)
Doug Thompson8096cfa2007-07-19 01:50:27 -07001104{
Joe Perches956b9ba2012-04-29 17:08:39 -03001105 edac_dbg(1, "Unregistering device %s\n", dev_name(&mci->dev));
Lans Zhang44d22e22012-12-24 14:01:34 +01001106 device_unregister(&mci->dev);
Borislav Petkov88d84ac2013-07-19 12:28:25 +02001107 bus_unregister(mci->bus);
1108 kfree(mci->bus->name);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001109}
Doug Thompson8096cfa2007-07-19 01:50:27 -07001110
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001111static void mc_attr_release(struct device *dev)
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001112{
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001113 /*
1114 * There's no container structure here, as this is just the mci
1115 * parent device, used to create the /sys/devices/mc sysfs node.
1116 * So, there are no attributes on it.
1117 */
Joe Perches956b9ba2012-04-29 17:08:39 -03001118 edac_dbg(1, "Releasing device %s\n", dev_name(dev));
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001119 kfree(dev);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001120}
1121
1122static struct device_type mc_attr_type = {
1123 .release = mc_attr_release,
1124};
1125/*
1126 * Init/exit code for the module. Basically, creates/removes /sys/class/rc
1127 */
1128int __init edac_mc_sysfs_init(void)
1129{
1130 struct bus_type *edac_subsys;
1131 int err;
Doug Thompson8096cfa2007-07-19 01:50:27 -07001132
Kay Sieversfe5ff8b2011-12-14 15:21:07 -08001133 /* get the /sys/devices/system/edac subsys reference */
1134 edac_subsys = edac_get_sysfs_subsys();
1135 if (edac_subsys == NULL) {
Joe Perches956b9ba2012-04-29 17:08:39 -03001136 edac_dbg(1, "no edac_subsys\n");
Denis Kirjanov2d56b102012-10-25 19:42:58 +04001137 err = -EINVAL;
1138 goto out;
Doug Thompson8096cfa2007-07-19 01:50:27 -07001139 }
1140
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001141 mci_pdev = kzalloc(sizeof(*mci_pdev), GFP_KERNEL);
Denis Kirjanov2d56b102012-10-25 19:42:58 +04001142 if (!mci_pdev) {
1143 err = -ENOMEM;
1144 goto out_put_sysfs;
1145 }
Doug Thompson8096cfa2007-07-19 01:50:27 -07001146
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001147 mci_pdev->bus = edac_subsys;
1148 mci_pdev->type = &mc_attr_type;
1149 device_initialize(mci_pdev);
1150 dev_set_name(mci_pdev, "mc");
1151
1152 err = device_add(mci_pdev);
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001153 if (err < 0)
Denis Kirjanov2d56b102012-10-25 19:42:58 +04001154 goto out_dev_free;
Doug Thompson8096cfa2007-07-19 01:50:27 -07001155
Joe Perches956b9ba2012-04-29 17:08:39 -03001156 edac_dbg(0, "device %s created\n", dev_name(mci_pdev));
Mauro Carvalho Chehabde3910eb2012-04-24 15:05:43 -03001157
Doug Thompson8096cfa2007-07-19 01:50:27 -07001158 return 0;
Denis Kirjanov2d56b102012-10-25 19:42:58 +04001159
1160 out_dev_free:
1161 kfree(mci_pdev);
1162 out_put_sysfs:
1163 edac_put_sysfs_subsys();
1164 out:
1165 return err;
Doug Thompson8096cfa2007-07-19 01:50:27 -07001166}
1167
Mauro Carvalho Chehab7a623c02012-04-16 16:41:11 -03001168void __exit edac_mc_sysfs_exit(void)
Doug Thompson8096cfa2007-07-19 01:50:27 -07001169{
Lans Zhang44d22e22012-12-24 14:01:34 +01001170 device_unregister(mci_pdev);
Kay Sieversfe5ff8b2011-12-14 15:21:07 -08001171 edac_put_sysfs_subsys();
Doug Thompson8096cfa2007-07-19 01:50:27 -07001172}