blob: 53764577035f3f23d0e073991d368f99b8225479 [file] [log] [blame]
Douglas Thompsone27e3da2007-07-19 01:49:36 -07001/*
2 * file for managing the edac_device class of devices for EDAC
3 *
Douglas Thompson1c3631f2007-07-19 01:50:29 -07004 * (C) 2007 SoftwareBitMaker (http://www.softwarebitmaker.com)
5 *
Douglas Thompsone27e3da2007-07-19 01:49:36 -07006 * This file may be distributed under the terms of the
7 * GNU General Public License.
8 *
9 * Written Doug Thompson <norsk5@xmission.com>
10 *
11 */
12
Douglas Thompsone27e3da2007-07-19 01:49:36 -070013#include <linux/ctype.h>
Douglas Thompson1c3631f2007-07-19 01:50:29 -070014#include <linux/module.h>
Douglas Thompsone27e3da2007-07-19 01:49:36 -070015
16#include "edac_core.h"
17#include "edac_module.h"
18
Douglas Thompsone27e3da2007-07-19 01:49:36 -070019#define EDAC_DEVICE_SYMLINK "device"
20
21#define to_edacdev(k) container_of(k, struct edac_device_ctl_info, kobj)
22#define to_edacdev_attr(a) container_of(a, struct edacdev_attribute, attr)
23
Douglas Thompsone27e3da2007-07-19 01:49:36 -070024
25/*
26 * Set of edac_device_ctl_info attribute store/show functions
27 */
28
29/* 'log_ue' */
Douglas Thompson079708b2007-07-19 01:49:58 -070030static ssize_t edac_device_ctl_log_ue_show(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070031 *ctl_info, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070032{
Douglas Thompson079708b2007-07-19 01:49:58 -070033 return sprintf(data, "%u\n", ctl_info->log_ue);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070034}
35
Douglas Thompson079708b2007-07-19 01:49:58 -070036static ssize_t edac_device_ctl_log_ue_store(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070037 *ctl_info, const char *data,
38 size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070039{
40 /* if parameter is zero, turn off flag, if non-zero turn on flag */
Douglas Thompson079708b2007-07-19 01:49:58 -070041 ctl_info->log_ue = (simple_strtoul(data, NULL, 0) != 0);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070042
Douglas Thompson079708b2007-07-19 01:49:58 -070043 return count;
Douglas Thompsone27e3da2007-07-19 01:49:36 -070044}
45
46/* 'log_ce' */
Douglas Thompson079708b2007-07-19 01:49:58 -070047static ssize_t edac_device_ctl_log_ce_show(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070048 *ctl_info, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070049{
Douglas Thompson079708b2007-07-19 01:49:58 -070050 return sprintf(data, "%u\n", ctl_info->log_ce);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070051}
52
Douglas Thompson079708b2007-07-19 01:49:58 -070053static ssize_t edac_device_ctl_log_ce_store(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070054 *ctl_info, const char *data,
55 size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070056{
57 /* if parameter is zero, turn off flag, if non-zero turn on flag */
Douglas Thompson079708b2007-07-19 01:49:58 -070058 ctl_info->log_ce = (simple_strtoul(data, NULL, 0) != 0);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070059
Douglas Thompson079708b2007-07-19 01:49:58 -070060 return count;
Douglas Thompsone27e3da2007-07-19 01:49:36 -070061}
62
Douglas Thompsone27e3da2007-07-19 01:49:36 -070063/* 'panic_on_ue' */
Douglas Thompson079708b2007-07-19 01:49:58 -070064static ssize_t edac_device_ctl_panic_on_ue_show(struct edac_device_ctl_info
65 *ctl_info, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070066{
Douglas Thompson079708b2007-07-19 01:49:58 -070067 return sprintf(data, "%u\n", ctl_info->panic_on_ue);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070068}
69
Douglas Thompson079708b2007-07-19 01:49:58 -070070static ssize_t edac_device_ctl_panic_on_ue_store(struct edac_device_ctl_info
71 *ctl_info, const char *data,
72 size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070073{
74 /* if parameter is zero, turn off flag, if non-zero turn on flag */
Douglas Thompson079708b2007-07-19 01:49:58 -070075 ctl_info->panic_on_ue = (simple_strtoul(data, NULL, 0) != 0);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070076
77 return count;
78}
79
80/* 'poll_msec' show and store functions*/
Douglas Thompson079708b2007-07-19 01:49:58 -070081static ssize_t edac_device_ctl_poll_msec_show(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070082 *ctl_info, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070083{
Douglas Thompson079708b2007-07-19 01:49:58 -070084 return sprintf(data, "%u\n", ctl_info->poll_msec);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070085}
86
Douglas Thompson079708b2007-07-19 01:49:58 -070087static ssize_t edac_device_ctl_poll_msec_store(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070088 *ctl_info, const char *data,
89 size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070090{
91 unsigned long value;
92
93 /* get the value and enforce that it is non-zero, must be at least
94 * one millisecond for the delay period, between scans
95 * Then cancel last outstanding delay for the work request
96 * and set a new one.
97 */
Douglas Thompson079708b2007-07-19 01:49:58 -070098 value = simple_strtoul(data, NULL, 0);
99 edac_device_reset_delay_period(ctl_info, value);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700100
Douglas Thompson079708b2007-07-19 01:49:58 -0700101 return count;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700102}
103
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700104/* edac_device_ctl_info specific attribute structure */
105struct ctl_info_attribute {
Douglas Thompson079708b2007-07-19 01:49:58 -0700106 struct attribute attr;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700107 ssize_t(*show) (struct edac_device_ctl_info *, char *);
108 ssize_t(*store) (struct edac_device_ctl_info *, const char *, size_t);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700109};
110
111#define to_ctl_info(k) container_of(k, struct edac_device_ctl_info, kobj)
112#define to_ctl_info_attr(a) container_of(a,struct ctl_info_attribute,attr)
113
114/* Function to 'show' fields from the edac_dev 'ctl_info' structure */
115static ssize_t edac_dev_ctl_info_show(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700116 struct attribute *attr, char *buffer)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700117{
Douglas Thompson079708b2007-07-19 01:49:58 -0700118 struct edac_device_ctl_info *edac_dev = to_ctl_info(kobj);
119 struct ctl_info_attribute *ctl_info_attr = to_ctl_info_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700120
Douglas Thompson079708b2007-07-19 01:49:58 -0700121 if (ctl_info_attr->show)
122 return ctl_info_attr->show(edac_dev, buffer);
123 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700124}
125
126/* Function to 'store' fields into the edac_dev 'ctl_info' structure */
127static ssize_t edac_dev_ctl_info_store(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700128 struct attribute *attr,
129 const char *buffer, size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700130{
Douglas Thompson079708b2007-07-19 01:49:58 -0700131 struct edac_device_ctl_info *edac_dev = to_ctl_info(kobj);
132 struct ctl_info_attribute *ctl_info_attr = to_ctl_info_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700133
Douglas Thompson079708b2007-07-19 01:49:58 -0700134 if (ctl_info_attr->store)
135 return ctl_info_attr->store(edac_dev, buffer, count);
136 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700137}
138
139/* edac_dev file operations for an 'ctl_info' */
140static struct sysfs_ops device_ctl_info_ops = {
Douglas Thompson079708b2007-07-19 01:49:58 -0700141 .show = edac_dev_ctl_info_show,
142 .store = edac_dev_ctl_info_store
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700143};
144
145#define CTL_INFO_ATTR(_name,_mode,_show,_store) \
146static struct ctl_info_attribute attr_ctl_info_##_name = { \
Douglas Thompson052dfb42007-07-19 01:50:13 -0700147 .attr = {.name = __stringify(_name), .mode = _mode }, \
148 .show = _show, \
149 .store = _store, \
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700150};
151
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700152/* Declare the various ctl_info attributes here and their respective ops */
Douglas Thompson079708b2007-07-19 01:49:58 -0700153CTL_INFO_ATTR(log_ue, S_IRUGO | S_IWUSR,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700154 edac_device_ctl_log_ue_show, edac_device_ctl_log_ue_store);
Douglas Thompson079708b2007-07-19 01:49:58 -0700155CTL_INFO_ATTR(log_ce, S_IRUGO | S_IWUSR,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700156 edac_device_ctl_log_ce_show, edac_device_ctl_log_ce_store);
Douglas Thompson079708b2007-07-19 01:49:58 -0700157CTL_INFO_ATTR(panic_on_ue, S_IRUGO | S_IWUSR,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700158 edac_device_ctl_panic_on_ue_show,
159 edac_device_ctl_panic_on_ue_store);
Douglas Thompson079708b2007-07-19 01:49:58 -0700160CTL_INFO_ATTR(poll_msec, S_IRUGO | S_IWUSR,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700161 edac_device_ctl_poll_msec_show, edac_device_ctl_poll_msec_store);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700162
163/* Base Attributes of the EDAC_DEVICE ECC object */
164static struct ctl_info_attribute *device_ctrl_attr[] = {
165 &attr_ctl_info_panic_on_ue,
166 &attr_ctl_info_log_ue,
167 &attr_ctl_info_log_ce,
168 &attr_ctl_info_poll_msec,
169 NULL,
170};
171
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700172/*
173 * edac_device_ctrl_master_release
174 *
175 * called when the reference count for the 'main' kobj
176 * for a edac_device control struct reaches zero
177 *
178 * Reference count model:
179 * One 'main' kobject for each control structure allocated.
180 * That main kobj is initially set to one AND
181 * the reference count for the EDAC 'core' module is
182 * bumped by one, thus added 'keep in memory' dependency.
183 *
184 * Each new internal kobj (in instances and blocks) then
185 * bumps the 'main' kobject.
186 *
187 * When they are released their release functions decrement
188 * the 'main' kobj.
189 *
190 * When the main kobj reaches zero (0) then THIS function
191 * is called which then decrements the EDAC 'core' module.
192 * When the module reference count reaches zero then the
193 * module no longer has dependency on keeping the release
194 * function code in memory and module can be unloaded.
195 *
196 * This will support several control objects as well, each
197 * with its own 'main' kobj.
198 */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700199static void edac_device_ctrl_master_release(struct kobject *kobj)
200{
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700201 struct edac_device_ctl_info *edac_dev = to_edacdev(kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700202
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700203 debugf4("%s() control index=%d\n", __func__, edac_dev->dev_idx);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700204
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700205 /* decrement the EDAC CORE module ref count */
206 module_put(edac_dev->owner);
207
208 /* free the control struct containing the 'main' kobj
209 * passed in to this routine
210 */
211 kfree(edac_dev);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700212}
213
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700214/* ktype for the main (master) kobject */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700215static struct kobj_type ktype_device_ctrl = {
216 .release = edac_device_ctrl_master_release,
217 .sysfs_ops = &device_ctl_info_ops,
Douglas Thompson079708b2007-07-19 01:49:58 -0700218 .default_attrs = (struct attribute **)device_ctrl_attr,
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700219};
220
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700221/*
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700222 * edac_device_register_sysfs_main_kobj
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700223 *
224 * perform the high level setup for the new edac_device instance
225 *
226 * Return: 0 SUCCESS
227 * !0 FAILURE
228 */
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700229int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700230{
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700231 struct sysdev_class *edac_class;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700232 int err;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700233
234 debugf1("%s()\n", __func__);
235
Douglas Thompson079708b2007-07-19 01:49:58 -0700236 /* get the /sys/devices/system/edac reference */
237 edac_class = edac_get_edac_class();
238 if (edac_class == NULL) {
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700239 debugf1("%s() no edac_class error\n", __func__);
240 err = -ENODEV;
241 goto err_out;
Douglas Thompson079708b2007-07-19 01:49:58 -0700242 }
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700243
244 /* Point to the 'edac_class' this instance 'reports' to */
245 edac_dev->edac_class = edac_class;
246
247 /* Init the devices's kobject */
Douglas Thompson079708b2007-07-19 01:49:58 -0700248 memset(&edac_dev->kobj, 0, sizeof(struct kobject));
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700249
250 /* Record which module 'owns' this control structure
251 * and bump the ref count of the module
252 */
253 edac_dev->owner = THIS_MODULE;
254
255 if (!try_module_get(edac_dev->owner)) {
256 err = -ENODEV;
257 goto err_out;
258 }
259
260 /* register */
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400261 err = kobject_init_and_add(&edac_dev->kobj, &ktype_device_ctrl,
262 &edac_class->kset.kobj,
263 "%s", edac_dev->name);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700264 if (err) {
265 debugf1("%s()Failed to register '.../edac/%s'\n",
Douglas Thompson079708b2007-07-19 01:49:58 -0700266 __func__, edac_dev->name);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700267 goto err_kobj_reg;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700268 }
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400269 kobject_uevent(&edac_dev->kobj, KOBJ_ADD);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700270
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700271 /* At this point, to 'free' the control struct,
272 * edac_device_unregister_sysfs_main_kobj() must be used
273 */
274
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700275 debugf4("%s() Registered '.../edac/%s' kobject\n",
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700276 __func__, edac_dev->name);
277
278 return 0;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700279
280 /* Error exit stack */
281err_kobj_reg:
282 module_put(edac_dev->owner);
283
284err_out:
285 return err;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700286}
287
288/*
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700289 * edac_device_unregister_sysfs_main_kobj:
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700290 * the '..../edac/<name>' kobject
291 */
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700292void edac_device_unregister_sysfs_main_kobj(
293 struct edac_device_ctl_info *edac_dev)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700294{
295 debugf0("%s()\n", __func__);
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700296 debugf4("%s() name of kobject is: %s\n",
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700297 __func__, kobject_name(&edac_dev->kobj));
298
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700299 /*
300 * Unregister the edac device's kobject and
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700301 * allow for reference count to reach 0 at which point
302 * the callback will be called to:
303 * a) module_put() this module
304 * b) 'kfree' the memory
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700305 */
Greg Kroah-Hartmanc10997f2007-12-20 08:13:05 -0800306 kobject_put(&edac_dev->kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700307}
308
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700309/* edac_dev -> instance information */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700310
311/*
312 * Set of low-level instance attribute show functions
313 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700314static ssize_t instance_ue_count_show(struct edac_device_instance *instance,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700315 char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700316{
Douglas Thompson079708b2007-07-19 01:49:58 -0700317 return sprintf(data, "%u\n", instance->counters.ue_count);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700318}
319
Douglas Thompson079708b2007-07-19 01:49:58 -0700320static ssize_t instance_ce_count_show(struct edac_device_instance *instance,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700321 char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700322{
Douglas Thompson079708b2007-07-19 01:49:58 -0700323 return sprintf(data, "%u\n", instance->counters.ce_count);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700324}
325
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700326#define to_instance(k) container_of(k, struct edac_device_instance, kobj)
327#define to_instance_attr(a) container_of(a,struct instance_attribute,attr)
328
329/* DEVICE instance kobject release() function */
330static void edac_device_ctrl_instance_release(struct kobject *kobj)
331{
332 struct edac_device_instance *instance;
333
334 debugf1("%s()\n", __func__);
335
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700336 /* map from this kobj to the main control struct
337 * and then dec the main kobj count
338 */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700339 instance = to_instance(kobj);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700340 kobject_put(&instance->ctl->kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700341}
342
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700343/* instance specific attribute structure */
344struct instance_attribute {
Douglas Thompson079708b2007-07-19 01:49:58 -0700345 struct attribute attr;
Douglas Thompson52490c82007-07-19 01:50:20 -0700346 ssize_t(*show) (struct edac_device_instance *, char *);
347 ssize_t(*store) (struct edac_device_instance *, const char *, size_t);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700348};
349
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700350/* Function to 'show' fields from the edac_dev 'instance' structure */
351static ssize_t edac_dev_instance_show(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700352 struct attribute *attr, char *buffer)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700353{
Douglas Thompson079708b2007-07-19 01:49:58 -0700354 struct edac_device_instance *instance = to_instance(kobj);
355 struct instance_attribute *instance_attr = to_instance_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700356
Douglas Thompson079708b2007-07-19 01:49:58 -0700357 if (instance_attr->show)
358 return instance_attr->show(instance, buffer);
359 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700360}
361
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700362/* Function to 'store' fields into the edac_dev 'instance' structure */
363static ssize_t edac_dev_instance_store(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700364 struct attribute *attr,
365 const char *buffer, size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700366{
Douglas Thompson079708b2007-07-19 01:49:58 -0700367 struct edac_device_instance *instance = to_instance(kobj);
368 struct instance_attribute *instance_attr = to_instance_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700369
Douglas Thompson079708b2007-07-19 01:49:58 -0700370 if (instance_attr->store)
371 return instance_attr->store(instance, buffer, count);
372 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700373}
374
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700375/* edac_dev file operations for an 'instance' */
376static struct sysfs_ops device_instance_ops = {
Douglas Thompson079708b2007-07-19 01:49:58 -0700377 .show = edac_dev_instance_show,
378 .store = edac_dev_instance_store
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700379};
380
381#define INSTANCE_ATTR(_name,_mode,_show,_store) \
382static struct instance_attribute attr_instance_##_name = { \
Douglas Thompson052dfb42007-07-19 01:50:13 -0700383 .attr = {.name = __stringify(_name), .mode = _mode }, \
384 .show = _show, \
385 .store = _store, \
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700386};
387
388/*
389 * Define attributes visible for the edac_device instance object
390 * Each contains a pointer to a show and an optional set
391 * function pointer that does the low level output/input
392 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700393INSTANCE_ATTR(ce_count, S_IRUGO, instance_ce_count_show, NULL);
394INSTANCE_ATTR(ue_count, S_IRUGO, instance_ue_count_show, NULL);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700395
396/* list of edac_dev 'instance' attributes */
397static struct instance_attribute *device_instance_attr[] = {
398 &attr_instance_ce_count,
399 &attr_instance_ue_count,
400 NULL,
401};
402
403/* The 'ktype' for each edac_dev 'instance' */
404static struct kobj_type ktype_instance_ctrl = {
405 .release = edac_device_ctrl_instance_release,
406 .sysfs_ops = &device_instance_ops,
Douglas Thompson079708b2007-07-19 01:49:58 -0700407 .default_attrs = (struct attribute **)device_instance_attr,
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700408};
409
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700410/* edac_dev -> instance -> block information */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700411
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700412#define to_block(k) container_of(k, struct edac_device_block, kobj)
413#define to_block_attr(a) \
414 container_of(a, struct edac_dev_sysfs_block_attribute, attr)
415
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700416/*
417 * Set of low-level block attribute show functions
418 */
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700419static ssize_t block_ue_count_show(struct kobject *kobj,
420 struct attribute *attr, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700421{
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700422 struct edac_device_block *block = to_block(kobj);
423
Douglas Thompson079708b2007-07-19 01:49:58 -0700424 return sprintf(data, "%u\n", block->counters.ue_count);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700425}
426
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700427static ssize_t block_ce_count_show(struct kobject *kobj,
428 struct attribute *attr, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700429{
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700430 struct edac_device_block *block = to_block(kobj);
431
Douglas Thompson079708b2007-07-19 01:49:58 -0700432 return sprintf(data, "%u\n", block->counters.ce_count);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700433}
434
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700435/* DEVICE block kobject release() function */
436static void edac_device_ctrl_block_release(struct kobject *kobj)
437{
438 struct edac_device_block *block;
439
440 debugf1("%s()\n", __func__);
441
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700442 /* get the container of the kobj */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700443 block = to_block(kobj);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700444
445 /* map from 'block kobj' to 'block->instance->controller->main_kobj'
446 * now 'release' the block kobject
447 */
448 kobject_put(&block->instance->ctl->kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700449}
450
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700451
452/* Function to 'show' fields from the edac_dev 'block' structure */
453static ssize_t edac_dev_block_show(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700454 struct attribute *attr, char *buffer)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700455{
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700456 struct edac_dev_sysfs_block_attribute *block_attr =
457 to_block_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700458
Douglas Thompson079708b2007-07-19 01:49:58 -0700459 if (block_attr->show)
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700460 return block_attr->show(kobj, attr, buffer);
Douglas Thompson079708b2007-07-19 01:49:58 -0700461 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700462}
463
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700464/* Function to 'store' fields into the edac_dev 'block' structure */
465static ssize_t edac_dev_block_store(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700466 struct attribute *attr,
467 const char *buffer, size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700468{
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700469 struct edac_dev_sysfs_block_attribute *block_attr;
470
471 block_attr = to_block_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700472
Douglas Thompson079708b2007-07-19 01:49:58 -0700473 if (block_attr->store)
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700474 return block_attr->store(kobj, attr, buffer, count);
Douglas Thompson079708b2007-07-19 01:49:58 -0700475 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700476}
477
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700478/* edac_dev file operations for a 'block' */
479static struct sysfs_ops device_block_ops = {
Douglas Thompson079708b2007-07-19 01:49:58 -0700480 .show = edac_dev_block_show,
481 .store = edac_dev_block_store
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700482};
483
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700484#define BLOCK_ATTR(_name,_mode,_show,_store) \
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700485static struct edac_dev_sysfs_block_attribute attr_block_##_name = { \
Douglas Thompson052dfb42007-07-19 01:50:13 -0700486 .attr = {.name = __stringify(_name), .mode = _mode }, \
487 .show = _show, \
488 .store = _store, \
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700489};
490
Douglas Thompson079708b2007-07-19 01:49:58 -0700491BLOCK_ATTR(ce_count, S_IRUGO, block_ce_count_show, NULL);
492BLOCK_ATTR(ue_count, S_IRUGO, block_ue_count_show, NULL);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700493
494/* list of edac_dev 'block' attributes */
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700495static struct edac_dev_sysfs_block_attribute *device_block_attr[] = {
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700496 &attr_block_ce_count,
497 &attr_block_ue_count,
498 NULL,
499};
500
501/* The 'ktype' for each edac_dev 'block' */
502static struct kobj_type ktype_block_ctrl = {
503 .release = edac_device_ctrl_block_release,
504 .sysfs_ops = &device_block_ops,
Douglas Thompson079708b2007-07-19 01:49:58 -0700505 .default_attrs = (struct attribute **)device_block_attr,
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700506};
507
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700508/* block ctor/dtor code */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700509
510/*
511 * edac_device_create_block
512 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700513static int edac_device_create_block(struct edac_device_ctl_info *edac_dev,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700514 struct edac_device_instance *instance,
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700515 struct edac_device_block *block)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700516{
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700517 int i;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700518 int err;
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700519 struct edac_dev_sysfs_block_attribute *sysfs_attrib;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700520 struct kobject *main_kobj;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700521
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700522 debugf4("%s() Instance '%s' inst_p=%p block '%s' block_p=%p\n",
523 __func__, instance->name, instance, block->name, block);
524 debugf4("%s() block kobj=%p block kobj->parent=%p\n",
525 __func__, &block->kobj, &block->kobj.parent);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700526
527 /* init this block's kobject */
Douglas Thompson079708b2007-07-19 01:49:58 -0700528 memset(&block->kobj, 0, sizeof(struct kobject));
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700529
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700530 /* bump the main kobject's reference count for this controller
531 * and this instance is dependant on the main
532 */
533 main_kobj = kobject_get(&edac_dev->kobj);
534 if (!main_kobj) {
535 err = -ENODEV;
536 goto err_out;
537 }
538
539 /* Add this block's kobject */
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400540 err = kobject_init_and_add(&block->kobj, &ktype_block_ctrl,
541 &instance->kobj,
542 "%s", block->name);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700543 if (err) {
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700544 debugf1("%s() Failed to register instance '%s'\n",
Douglas Thompson079708b2007-07-19 01:49:58 -0700545 __func__, block->name);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700546 kobject_put(main_kobj);
547 err = -ENODEV;
548 goto err_out;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700549 }
550
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700551 /* If there are driver level block attributes, then added them
552 * to the block kobject
553 */
554 sysfs_attrib = block->block_attributes;
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700555 if (sysfs_attrib && block->nr_attribs) {
556 for (i = 0; i < block->nr_attribs; i++, sysfs_attrib++) {
557
558 debugf4("%s() creating block attrib='%s' "
559 "attrib->%p to kobj=%p\n",
560 __func__,
561 sysfs_attrib->attr.name,
562 sysfs_attrib, &block->kobj);
563
564 /* Create each block_attribute file */
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700565 err = sysfs_create_file(&block->kobj,
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700566 &sysfs_attrib->attr);
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700567 if (err)
568 goto err_on_attrib;
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700569 }
570 }
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400571 kobject_uevent(&block->kobj, KOBJ_ADD);
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700572
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700573 return 0;
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700574
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700575 /* Error unwind stack */
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700576err_on_attrib:
Greg Kroah-Hartmanc10997f2007-12-20 08:13:05 -0800577 kobject_put(&block->kobj);
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700578
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700579err_out:
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700580 return err;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700581}
582
583/*
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700584 * edac_device_delete_block(edac_dev,block);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700585 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700586static void edac_device_delete_block(struct edac_device_ctl_info *edac_dev,
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700587 struct edac_device_block *block)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700588{
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700589 struct edac_dev_sysfs_block_attribute *sysfs_attrib;
590 int i;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700591
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700592 /* if this block has 'attributes' then we need to iterate over the list
593 * and 'remove' the attributes on this block
594 */
595 sysfs_attrib = block->block_attributes;
596 if (sysfs_attrib && block->nr_attribs) {
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700597 for (i = 0; i < block->nr_attribs; i++, sysfs_attrib++) {
598
599 /* remove each block_attrib file */
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700600 sysfs_remove_file(&block->kobj,
601 (struct attribute *) sysfs_attrib);
602 }
603 }
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700604
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700605 /* unregister this block's kobject, SEE:
606 * edac_device_ctrl_block_release() callback operation
607 */
Greg Kroah-Hartmanc10997f2007-12-20 08:13:05 -0800608 kobject_put(&block->kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700609}
610
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700611/* instance ctor/dtor code */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700612
613/*
614 * edac_device_create_instance
615 * create just one instance of an edac_device 'instance'
616 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700617static int edac_device_create_instance(struct edac_device_ctl_info *edac_dev,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700618 int idx)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700619{
620 int i, j;
621 int err;
622 struct edac_device_instance *instance;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700623 struct kobject *main_kobj;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700624
625 instance = &edac_dev->instances[idx];
626
627 /* Init the instance's kobject */
Douglas Thompson079708b2007-07-19 01:49:58 -0700628 memset(&instance->kobj, 0, sizeof(struct kobject));
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700629
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700630 instance->ctl = edac_dev;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700631
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700632 /* bump the main kobject's reference count for this controller
633 * and this instance is dependant on the main
634 */
635 main_kobj = kobject_get(&edac_dev->kobj);
636 if (!main_kobj) {
637 err = -ENODEV;
638 goto err_out;
639 }
640
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400641 /* Formally register this instance's kobject under the edac_device */
642 err = kobject_init_and_add(&instance->kobj, &ktype_instance_ctrl,
643 &edac_dev->kobj, "%s", instance->name);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700644 if (err != 0) {
645 debugf2("%s() Failed to register instance '%s'\n",
Douglas Thompson079708b2007-07-19 01:49:58 -0700646 __func__, instance->name);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700647 kobject_put(main_kobj);
648 goto err_out;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700649 }
650
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700651 debugf4("%s() now register '%d' blocks for instance %d\n",
Douglas Thompson079708b2007-07-19 01:49:58 -0700652 __func__, instance->nr_blocks, idx);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700653
654 /* register all blocks of this instance */
Douglas Thompson079708b2007-07-19 01:49:58 -0700655 for (i = 0; i < instance->nr_blocks; i++) {
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700656 err = edac_device_create_block(edac_dev, instance,
657 &instance->blocks[i]);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700658 if (err) {
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700659 /* If any fail, remove all previous ones */
Douglas Thompson52490c82007-07-19 01:50:20 -0700660 for (j = 0; j < i; j++)
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700661 edac_device_delete_block(edac_dev,
662 &instance->blocks[j]);
663 goto err_release_instance_kobj;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700664 }
665 }
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400666 kobject_uevent(&instance->kobj, KOBJ_ADD);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700667
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700668 debugf4("%s() Registered instance %d '%s' kobject\n",
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700669 __func__, idx, instance->name);
670
671 return 0;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700672
673 /* error unwind stack */
674err_release_instance_kobj:
Greg Kroah-Hartmanc10997f2007-12-20 08:13:05 -0800675 kobject_put(&instance->kobj);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700676
677err_out:
678 return err;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700679}
680
681/*
682 * edac_device_remove_instance
683 * remove an edac_device instance
684 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700685static void edac_device_delete_instance(struct edac_device_ctl_info *edac_dev,
686 int idx)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700687{
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700688 struct edac_device_instance *instance;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700689 int i;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700690
691 instance = &edac_dev->instances[idx];
692
693 /* unregister all blocks in this instance */
Douglas Thompson52490c82007-07-19 01:50:20 -0700694 for (i = 0; i < instance->nr_blocks; i++)
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700695 edac_device_delete_block(edac_dev, &instance->blocks[i]);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700696
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700697 /* unregister this instance's kobject, SEE:
698 * edac_device_ctrl_instance_release() for callback operation
699 */
Greg Kroah-Hartmanc10997f2007-12-20 08:13:05 -0800700 kobject_put(&instance->kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700701}
702
703/*
704 * edac_device_create_instances
705 * create the first level of 'instances' for this device
706 * (ie 'cache' might have 'cache0', 'cache1', 'cache2', etc
707 */
708static int edac_device_create_instances(struct edac_device_ctl_info *edac_dev)
709{
710 int i, j;
711 int err;
712
713 debugf0("%s()\n", __func__);
714
715 /* iterate over creation of the instances */
Douglas Thompson079708b2007-07-19 01:49:58 -0700716 for (i = 0; i < edac_dev->nr_instances; i++) {
717 err = edac_device_create_instance(edac_dev, i);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700718 if (err) {
719 /* unwind previous instances on error */
Douglas Thompson52490c82007-07-19 01:50:20 -0700720 for (j = 0; j < i; j++)
Douglas Thompson079708b2007-07-19 01:49:58 -0700721 edac_device_delete_instance(edac_dev, j);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700722 return err;
723 }
724 }
725
726 return 0;
727}
728
729/*
730 * edac_device_delete_instances(edac_dev);
731 * unregister all the kobjects of the instances
732 */
733static void edac_device_delete_instances(struct edac_device_ctl_info *edac_dev)
734{
735 int i;
736
737 /* iterate over creation of the instances */
Douglas Thompson52490c82007-07-19 01:50:20 -0700738 for (i = 0; i < edac_dev->nr_instances; i++)
Douglas Thompson079708b2007-07-19 01:49:58 -0700739 edac_device_delete_instance(edac_dev, i);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700740}
741
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700742/* edac_dev sysfs ctor/dtor code */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700743
744/*
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700745 * edac_device_add_main_sysfs_attributes
Douglas Thompson42a8e392007-07-19 01:50:10 -0700746 * add some attributes to this instance's main kobject
747 */
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700748static int edac_device_add_main_sysfs_attributes(
Douglas Thompson42a8e392007-07-19 01:50:10 -0700749 struct edac_device_ctl_info *edac_dev)
750{
Douglas Thompson052dfb42007-07-19 01:50:13 -0700751 struct edac_dev_sysfs_attribute *sysfs_attrib;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700752 int err = 0;
Douglas Thompson42a8e392007-07-19 01:50:10 -0700753
Douglas Thompson052dfb42007-07-19 01:50:13 -0700754 sysfs_attrib = edac_dev->sysfs_attributes;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700755 if (sysfs_attrib) {
756 /* iterate over the array and create an attribute for each
757 * entry in the list
758 */
759 while (sysfs_attrib->attr.name != NULL) {
760 err = sysfs_create_file(&edac_dev->kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700761 (struct attribute*) sysfs_attrib);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700762 if (err)
763 goto err_out;
Douglas Thompson42a8e392007-07-19 01:50:10 -0700764
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700765 sysfs_attrib++;
766 }
Douglas Thompson052dfb42007-07-19 01:50:13 -0700767 }
Douglas Thompson42a8e392007-07-19 01:50:10 -0700768
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700769err_out:
770 return err;
771}
772
773/*
774 * edac_device_remove_main_sysfs_attributes
775 * remove any attributes to this instance's main kobject
776 */
777static void edac_device_remove_main_sysfs_attributes(
778 struct edac_device_ctl_info *edac_dev)
779{
780 struct edac_dev_sysfs_attribute *sysfs_attrib;
781
782 /* if there are main attributes, defined, remove them. First,
783 * point to the start of the array and iterate over it
784 * removing each attribute listed from this device's instance's kobject
785 */
786 sysfs_attrib = edac_dev->sysfs_attributes;
787 if (sysfs_attrib) {
788 while (sysfs_attrib->attr.name != NULL) {
789 sysfs_remove_file(&edac_dev->kobj,
790 (struct attribute *) sysfs_attrib);
791 sysfs_attrib++;
792 }
793 }
Douglas Thompson42a8e392007-07-19 01:50:10 -0700794}
795
796/*
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700797 * edac_device_create_sysfs() Constructor
798 *
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700799 * accept a created edac_device control structure
800 * and 'export' it to sysfs. The 'main' kobj should already have been
801 * created. 'instance' and 'block' kobjects should be registered
802 * along with any 'block' attributes from the low driver. In addition,
803 * the main attributes (if any) are connected to the main kobject of
804 * the control structure.
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700805 *
806 * Return:
807 * 0 Success
808 * !0 Failure
809 */
810int edac_device_create_sysfs(struct edac_device_ctl_info *edac_dev)
811{
812 int err;
Douglas Thompson079708b2007-07-19 01:49:58 -0700813 struct kobject *edac_kobj = &edac_dev->kobj;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700814
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700815 debugf0("%s() idx=%d\n", __func__, edac_dev->dev_idx);
816
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700817 /* go create any main attributes callers wants */
818 err = edac_device_add_main_sysfs_attributes(edac_dev);
819 if (err) {
820 debugf0("%s() failed to add sysfs attribs\n", __func__);
821 goto err_out;
Douglas Thompson42a8e392007-07-19 01:50:10 -0700822 }
823
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700824 /* create a symlink from the edac device
825 * to the platform 'device' being used for this
826 */
827 err = sysfs_create_link(edac_kobj,
Douglas Thompson079708b2007-07-19 01:49:58 -0700828 &edac_dev->dev->kobj, EDAC_DEVICE_SYMLINK);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700829 if (err) {
830 debugf0("%s() sysfs_create_link() returned err= %d\n",
831 __func__, err);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700832 goto err_remove_main_attribs;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700833 }
834
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700835 /* Create the first level instance directories
836 * In turn, the nested blocks beneath the instances will
837 * be registered as well
838 */
839 err = edac_device_create_instances(edac_dev);
840 if (err) {
841 debugf0("%s() edac_device_create_instances() "
842 "returned err= %d\n", __func__, err);
843 goto err_remove_link;
844 }
845
846
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700847 debugf4("%s() create-instances done, idx=%d\n",
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700848 __func__, edac_dev->dev_idx);
849
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700850 return 0;
851
852 /* Error unwind stack */
Douglas Thompson42a8e392007-07-19 01:50:10 -0700853err_remove_link:
854 /* remove the sym link */
855 sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700856
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700857err_remove_main_attribs:
858 edac_device_remove_main_sysfs_attributes(edac_dev);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700859
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700860err_out:
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700861 return err;
862}
863
864/*
865 * edac_device_remove_sysfs() destructor
866 *
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700867 * given an edac_device struct, tear down the kobject resources
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700868 */
869void edac_device_remove_sysfs(struct edac_device_ctl_info *edac_dev)
870{
871 debugf0("%s()\n", __func__);
872
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700873 /* remove any main attributes for this device */
874 edac_device_remove_main_sysfs_attributes(edac_dev);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700875
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700876 /* remove the device sym link */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700877 sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK);
878
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700879 /* walk the instance/block kobject tree, deconstructing it */
880 edac_device_delete_instances(edac_dev);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700881}