blob: 070968178a24a80703708dd50ba363301ad71aac [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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090015#include <linux/slab.h>
Douglas Thompsone27e3da2007-07-19 01:49:36 -070016
17#include "edac_core.h"
18#include "edac_module.h"
19
Douglas Thompsone27e3da2007-07-19 01:49:36 -070020#define EDAC_DEVICE_SYMLINK "device"
21
22#define to_edacdev(k) container_of(k, struct edac_device_ctl_info, kobj)
23#define to_edacdev_attr(a) container_of(a, struct edacdev_attribute, attr)
24
Douglas Thompsone27e3da2007-07-19 01:49:36 -070025
26/*
27 * Set of edac_device_ctl_info attribute store/show functions
28 */
29
30/* 'log_ue' */
Douglas Thompson079708b2007-07-19 01:49:58 -070031static ssize_t edac_device_ctl_log_ue_show(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070032 *ctl_info, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070033{
Douglas Thompson079708b2007-07-19 01:49:58 -070034 return sprintf(data, "%u\n", ctl_info->log_ue);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070035}
36
Douglas Thompson079708b2007-07-19 01:49:58 -070037static ssize_t edac_device_ctl_log_ue_store(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070038 *ctl_info, const char *data,
39 size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070040{
41 /* if parameter is zero, turn off flag, if non-zero turn on flag */
Douglas Thompson079708b2007-07-19 01:49:58 -070042 ctl_info->log_ue = (simple_strtoul(data, NULL, 0) != 0);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070043
Douglas Thompson079708b2007-07-19 01:49:58 -070044 return count;
Douglas Thompsone27e3da2007-07-19 01:49:36 -070045}
46
47/* 'log_ce' */
Douglas Thompson079708b2007-07-19 01:49:58 -070048static ssize_t edac_device_ctl_log_ce_show(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070049 *ctl_info, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070050{
Douglas Thompson079708b2007-07-19 01:49:58 -070051 return sprintf(data, "%u\n", ctl_info->log_ce);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070052}
53
Douglas Thompson079708b2007-07-19 01:49:58 -070054static ssize_t edac_device_ctl_log_ce_store(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070055 *ctl_info, const char *data,
56 size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070057{
58 /* if parameter is zero, turn off flag, if non-zero turn on flag */
Douglas Thompson079708b2007-07-19 01:49:58 -070059 ctl_info->log_ce = (simple_strtoul(data, NULL, 0) != 0);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070060
Douglas Thompson079708b2007-07-19 01:49:58 -070061 return count;
Douglas Thompsone27e3da2007-07-19 01:49:36 -070062}
63
Douglas Thompsone27e3da2007-07-19 01:49:36 -070064/* 'panic_on_ue' */
Douglas Thompson079708b2007-07-19 01:49:58 -070065static ssize_t edac_device_ctl_panic_on_ue_show(struct edac_device_ctl_info
66 *ctl_info, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070067{
Douglas Thompson079708b2007-07-19 01:49:58 -070068 return sprintf(data, "%u\n", ctl_info->panic_on_ue);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070069}
70
Douglas Thompson079708b2007-07-19 01:49:58 -070071static ssize_t edac_device_ctl_panic_on_ue_store(struct edac_device_ctl_info
72 *ctl_info, const char *data,
73 size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070074{
75 /* if parameter is zero, turn off flag, if non-zero turn on flag */
Douglas Thompson079708b2007-07-19 01:49:58 -070076 ctl_info->panic_on_ue = (simple_strtoul(data, NULL, 0) != 0);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070077
78 return count;
79}
80
81/* 'poll_msec' show and store functions*/
Douglas Thompson079708b2007-07-19 01:49:58 -070082static ssize_t edac_device_ctl_poll_msec_show(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070083 *ctl_info, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070084{
Douglas Thompson079708b2007-07-19 01:49:58 -070085 return sprintf(data, "%u\n", ctl_info->poll_msec);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070086}
87
Douglas Thompson079708b2007-07-19 01:49:58 -070088static ssize_t edac_device_ctl_poll_msec_store(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070089 *ctl_info, const char *data,
90 size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070091{
92 unsigned long value;
93
94 /* get the value and enforce that it is non-zero, must be at least
95 * one millisecond for the delay period, between scans
96 * Then cancel last outstanding delay for the work request
97 * and set a new one.
98 */
Douglas Thompson079708b2007-07-19 01:49:58 -070099 value = simple_strtoul(data, NULL, 0);
100 edac_device_reset_delay_period(ctl_info, value);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700101
Douglas Thompson079708b2007-07-19 01:49:58 -0700102 return count;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700103}
104
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700105/* edac_device_ctl_info specific attribute structure */
106struct ctl_info_attribute {
Douglas Thompson079708b2007-07-19 01:49:58 -0700107 struct attribute attr;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700108 ssize_t(*show) (struct edac_device_ctl_info *, char *);
109 ssize_t(*store) (struct edac_device_ctl_info *, const char *, size_t);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700110};
111
112#define to_ctl_info(k) container_of(k, struct edac_device_ctl_info, kobj)
113#define to_ctl_info_attr(a) container_of(a,struct ctl_info_attribute,attr)
114
115/* Function to 'show' fields from the edac_dev 'ctl_info' structure */
116static ssize_t edac_dev_ctl_info_show(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700117 struct attribute *attr, char *buffer)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700118{
Douglas Thompson079708b2007-07-19 01:49:58 -0700119 struct edac_device_ctl_info *edac_dev = to_ctl_info(kobj);
120 struct ctl_info_attribute *ctl_info_attr = to_ctl_info_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700121
Douglas Thompson079708b2007-07-19 01:49:58 -0700122 if (ctl_info_attr->show)
123 return ctl_info_attr->show(edac_dev, buffer);
124 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700125}
126
127/* Function to 'store' fields into the edac_dev 'ctl_info' structure */
128static ssize_t edac_dev_ctl_info_store(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700129 struct attribute *attr,
130 const char *buffer, size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700131{
Douglas Thompson079708b2007-07-19 01:49:58 -0700132 struct edac_device_ctl_info *edac_dev = to_ctl_info(kobj);
133 struct ctl_info_attribute *ctl_info_attr = to_ctl_info_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700134
Douglas Thompson079708b2007-07-19 01:49:58 -0700135 if (ctl_info_attr->store)
136 return ctl_info_attr->store(edac_dev, buffer, count);
137 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700138}
139
140/* edac_dev file operations for an 'ctl_info' */
Emese Revfy52cf25d2010-01-19 02:58:23 +0100141static const struct sysfs_ops device_ctl_info_ops = {
Douglas Thompson079708b2007-07-19 01:49:58 -0700142 .show = edac_dev_ctl_info_show,
143 .store = edac_dev_ctl_info_store
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700144};
145
146#define CTL_INFO_ATTR(_name,_mode,_show,_store) \
147static struct ctl_info_attribute attr_ctl_info_##_name = { \
Douglas Thompson052dfb42007-07-19 01:50:13 -0700148 .attr = {.name = __stringify(_name), .mode = _mode }, \
149 .show = _show, \
150 .store = _store, \
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700151};
152
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700153/* Declare the various ctl_info attributes here and their respective ops */
Douglas Thompson079708b2007-07-19 01:49:58 -0700154CTL_INFO_ATTR(log_ue, S_IRUGO | S_IWUSR,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700155 edac_device_ctl_log_ue_show, edac_device_ctl_log_ue_store);
Douglas Thompson079708b2007-07-19 01:49:58 -0700156CTL_INFO_ATTR(log_ce, S_IRUGO | S_IWUSR,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700157 edac_device_ctl_log_ce_show, edac_device_ctl_log_ce_store);
Douglas Thompson079708b2007-07-19 01:49:58 -0700158CTL_INFO_ATTR(panic_on_ue, S_IRUGO | S_IWUSR,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700159 edac_device_ctl_panic_on_ue_show,
160 edac_device_ctl_panic_on_ue_store);
Douglas Thompson079708b2007-07-19 01:49:58 -0700161CTL_INFO_ATTR(poll_msec, S_IRUGO | S_IWUSR,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700162 edac_device_ctl_poll_msec_show, edac_device_ctl_poll_msec_store);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700163
164/* Base Attributes of the EDAC_DEVICE ECC object */
165static struct ctl_info_attribute *device_ctrl_attr[] = {
166 &attr_ctl_info_panic_on_ue,
167 &attr_ctl_info_log_ue,
168 &attr_ctl_info_log_ce,
169 &attr_ctl_info_poll_msec,
170 NULL,
171};
172
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700173/*
174 * edac_device_ctrl_master_release
175 *
176 * called when the reference count for the 'main' kobj
177 * for a edac_device control struct reaches zero
178 *
179 * Reference count model:
180 * One 'main' kobject for each control structure allocated.
181 * That main kobj is initially set to one AND
182 * the reference count for the EDAC 'core' module is
183 * bumped by one, thus added 'keep in memory' dependency.
184 *
185 * Each new internal kobj (in instances and blocks) then
186 * bumps the 'main' kobject.
187 *
188 * When they are released their release functions decrement
189 * the 'main' kobj.
190 *
191 * When the main kobj reaches zero (0) then THIS function
192 * is called which then decrements the EDAC 'core' module.
193 * When the module reference count reaches zero then the
194 * module no longer has dependency on keeping the release
195 * function code in memory and module can be unloaded.
196 *
197 * This will support several control objects as well, each
198 * with its own 'main' kobj.
199 */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700200static void edac_device_ctrl_master_release(struct kobject *kobj)
201{
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700202 struct edac_device_ctl_info *edac_dev = to_edacdev(kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700203
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700204 debugf4("%s() control index=%d\n", __func__, edac_dev->dev_idx);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700205
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700206 /* decrement the EDAC CORE module ref count */
207 module_put(edac_dev->owner);
208
209 /* free the control struct containing the 'main' kobj
210 * passed in to this routine
211 */
212 kfree(edac_dev);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700213}
214
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700215/* ktype for the main (master) kobject */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700216static struct kobj_type ktype_device_ctrl = {
217 .release = edac_device_ctrl_master_release,
218 .sysfs_ops = &device_ctl_info_ops,
Douglas Thompson079708b2007-07-19 01:49:58 -0700219 .default_attrs = (struct attribute **)device_ctrl_attr,
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700220};
221
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700222/*
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700223 * edac_device_register_sysfs_main_kobj
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700224 *
225 * perform the high level setup for the new edac_device instance
226 *
227 * Return: 0 SUCCESS
228 * !0 FAILURE
229 */
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700230int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700231{
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700232 struct sysdev_class *edac_class;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700233 int err;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700234
235 debugf1("%s()\n", __func__);
236
Douglas Thompson079708b2007-07-19 01:49:58 -0700237 /* get the /sys/devices/system/edac reference */
238 edac_class = edac_get_edac_class();
239 if (edac_class == NULL) {
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700240 debugf1("%s() no edac_class error\n", __func__);
241 err = -ENODEV;
242 goto err_out;
Douglas Thompson079708b2007-07-19 01:49:58 -0700243 }
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700244
245 /* Point to the 'edac_class' this instance 'reports' to */
246 edac_dev->edac_class = edac_class;
247
248 /* Init the devices's kobject */
Douglas Thompson079708b2007-07-19 01:49:58 -0700249 memset(&edac_dev->kobj, 0, sizeof(struct kobject));
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700250
251 /* Record which module 'owns' this control structure
252 * and bump the ref count of the module
253 */
254 edac_dev->owner = THIS_MODULE;
255
256 if (!try_module_get(edac_dev->owner)) {
257 err = -ENODEV;
258 goto err_out;
259 }
260
261 /* register */
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400262 err = kobject_init_and_add(&edac_dev->kobj, &ktype_device_ctrl,
263 &edac_class->kset.kobj,
264 "%s", edac_dev->name);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700265 if (err) {
266 debugf1("%s()Failed to register '.../edac/%s'\n",
Douglas Thompson079708b2007-07-19 01:49:58 -0700267 __func__, edac_dev->name);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700268 goto err_kobj_reg;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700269 }
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400270 kobject_uevent(&edac_dev->kobj, KOBJ_ADD);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700271
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700272 /* At this point, to 'free' the control struct,
273 * edac_device_unregister_sysfs_main_kobj() must be used
274 */
275
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700276 debugf4("%s() Registered '.../edac/%s' kobject\n",
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700277 __func__, edac_dev->name);
278
279 return 0;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700280
281 /* Error exit stack */
282err_kobj_reg:
283 module_put(edac_dev->owner);
284
285err_out:
286 return err;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700287}
288
289/*
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700290 * edac_device_unregister_sysfs_main_kobj:
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700291 * the '..../edac/<name>' kobject
292 */
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700293void edac_device_unregister_sysfs_main_kobj(
294 struct edac_device_ctl_info *edac_dev)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700295{
296 debugf0("%s()\n", __func__);
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700297 debugf4("%s() name of kobject is: %s\n",
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700298 __func__, kobject_name(&edac_dev->kobj));
299
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700300 /*
301 * Unregister the edac device's kobject and
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700302 * allow for reference count to reach 0 at which point
303 * the callback will be called to:
304 * a) module_put() this module
305 * b) 'kfree' the memory
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700306 */
Greg Kroah-Hartmanc10997f2007-12-20 08:13:05 -0800307 kobject_put(&edac_dev->kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700308}
309
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700310/* edac_dev -> instance information */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700311
312/*
313 * Set of low-level instance attribute show functions
314 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700315static ssize_t instance_ue_count_show(struct edac_device_instance *instance,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700316 char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700317{
Douglas Thompson079708b2007-07-19 01:49:58 -0700318 return sprintf(data, "%u\n", instance->counters.ue_count);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700319}
320
Douglas Thompson079708b2007-07-19 01:49:58 -0700321static ssize_t instance_ce_count_show(struct edac_device_instance *instance,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700322 char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700323{
Douglas Thompson079708b2007-07-19 01:49:58 -0700324 return sprintf(data, "%u\n", instance->counters.ce_count);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700325}
326
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700327#define to_instance(k) container_of(k, struct edac_device_instance, kobj)
328#define to_instance_attr(a) container_of(a,struct instance_attribute,attr)
329
330/* DEVICE instance kobject release() function */
331static void edac_device_ctrl_instance_release(struct kobject *kobj)
332{
333 struct edac_device_instance *instance;
334
335 debugf1("%s()\n", __func__);
336
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700337 /* map from this kobj to the main control struct
338 * and then dec the main kobj count
339 */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700340 instance = to_instance(kobj);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700341 kobject_put(&instance->ctl->kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700342}
343
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700344/* instance specific attribute structure */
345struct instance_attribute {
Douglas Thompson079708b2007-07-19 01:49:58 -0700346 struct attribute attr;
Douglas Thompson52490c82007-07-19 01:50:20 -0700347 ssize_t(*show) (struct edac_device_instance *, char *);
348 ssize_t(*store) (struct edac_device_instance *, const char *, size_t);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700349};
350
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700351/* Function to 'show' fields from the edac_dev 'instance' structure */
352static ssize_t edac_dev_instance_show(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700353 struct attribute *attr, char *buffer)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700354{
Douglas Thompson079708b2007-07-19 01:49:58 -0700355 struct edac_device_instance *instance = to_instance(kobj);
356 struct instance_attribute *instance_attr = to_instance_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700357
Douglas Thompson079708b2007-07-19 01:49:58 -0700358 if (instance_attr->show)
359 return instance_attr->show(instance, buffer);
360 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700361}
362
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700363/* Function to 'store' fields into the edac_dev 'instance' structure */
364static ssize_t edac_dev_instance_store(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700365 struct attribute *attr,
366 const char *buffer, size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700367{
Douglas Thompson079708b2007-07-19 01:49:58 -0700368 struct edac_device_instance *instance = to_instance(kobj);
369 struct instance_attribute *instance_attr = to_instance_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700370
Douglas Thompson079708b2007-07-19 01:49:58 -0700371 if (instance_attr->store)
372 return instance_attr->store(instance, buffer, count);
373 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700374}
375
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700376/* edac_dev file operations for an 'instance' */
Emese Revfy52cf25d2010-01-19 02:58:23 +0100377static const struct sysfs_ops device_instance_ops = {
Douglas Thompson079708b2007-07-19 01:49:58 -0700378 .show = edac_dev_instance_show,
379 .store = edac_dev_instance_store
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700380};
381
382#define INSTANCE_ATTR(_name,_mode,_show,_store) \
383static struct instance_attribute attr_instance_##_name = { \
Douglas Thompson052dfb42007-07-19 01:50:13 -0700384 .attr = {.name = __stringify(_name), .mode = _mode }, \
385 .show = _show, \
386 .store = _store, \
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700387};
388
389/*
390 * Define attributes visible for the edac_device instance object
391 * Each contains a pointer to a show and an optional set
392 * function pointer that does the low level output/input
393 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700394INSTANCE_ATTR(ce_count, S_IRUGO, instance_ce_count_show, NULL);
395INSTANCE_ATTR(ue_count, S_IRUGO, instance_ue_count_show, NULL);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700396
397/* list of edac_dev 'instance' attributes */
398static struct instance_attribute *device_instance_attr[] = {
399 &attr_instance_ce_count,
400 &attr_instance_ue_count,
401 NULL,
402};
403
404/* The 'ktype' for each edac_dev 'instance' */
405static struct kobj_type ktype_instance_ctrl = {
406 .release = edac_device_ctrl_instance_release,
407 .sysfs_ops = &device_instance_ops,
Douglas Thompson079708b2007-07-19 01:49:58 -0700408 .default_attrs = (struct attribute **)device_instance_attr,
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700409};
410
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700411/* edac_dev -> instance -> block information */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700412
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700413#define to_block(k) container_of(k, struct edac_device_block, kobj)
414#define to_block_attr(a) \
415 container_of(a, struct edac_dev_sysfs_block_attribute, attr)
416
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700417/*
418 * Set of low-level block attribute show functions
419 */
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700420static ssize_t block_ue_count_show(struct kobject *kobj,
421 struct attribute *attr, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700422{
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700423 struct edac_device_block *block = to_block(kobj);
424
Douglas Thompson079708b2007-07-19 01:49:58 -0700425 return sprintf(data, "%u\n", block->counters.ue_count);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700426}
427
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700428static ssize_t block_ce_count_show(struct kobject *kobj,
429 struct attribute *attr, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700430{
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700431 struct edac_device_block *block = to_block(kobj);
432
Douglas Thompson079708b2007-07-19 01:49:58 -0700433 return sprintf(data, "%u\n", block->counters.ce_count);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700434}
435
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700436/* DEVICE block kobject release() function */
437static void edac_device_ctrl_block_release(struct kobject *kobj)
438{
439 struct edac_device_block *block;
440
441 debugf1("%s()\n", __func__);
442
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700443 /* get the container of the kobj */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700444 block = to_block(kobj);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700445
446 /* map from 'block kobj' to 'block->instance->controller->main_kobj'
447 * now 'release' the block kobject
448 */
449 kobject_put(&block->instance->ctl->kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700450}
451
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700452
453/* Function to 'show' fields from the edac_dev 'block' structure */
454static ssize_t edac_dev_block_show(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700455 struct attribute *attr, char *buffer)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700456{
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700457 struct edac_dev_sysfs_block_attribute *block_attr =
458 to_block_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700459
Douglas Thompson079708b2007-07-19 01:49:58 -0700460 if (block_attr->show)
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700461 return block_attr->show(kobj, attr, buffer);
Douglas Thompson079708b2007-07-19 01:49:58 -0700462 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700463}
464
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700465/* Function to 'store' fields into the edac_dev 'block' structure */
466static ssize_t edac_dev_block_store(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700467 struct attribute *attr,
468 const char *buffer, size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700469{
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700470 struct edac_dev_sysfs_block_attribute *block_attr;
471
472 block_attr = to_block_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700473
Douglas Thompson079708b2007-07-19 01:49:58 -0700474 if (block_attr->store)
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700475 return block_attr->store(kobj, attr, buffer, count);
Douglas Thompson079708b2007-07-19 01:49:58 -0700476 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700477}
478
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700479/* edac_dev file operations for a 'block' */
Emese Revfy52cf25d2010-01-19 02:58:23 +0100480static const struct sysfs_ops device_block_ops = {
Douglas Thompson079708b2007-07-19 01:49:58 -0700481 .show = edac_dev_block_show,
482 .store = edac_dev_block_store
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700483};
484
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700485#define BLOCK_ATTR(_name,_mode,_show,_store) \
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700486static struct edac_dev_sysfs_block_attribute attr_block_##_name = { \
Douglas Thompson052dfb42007-07-19 01:50:13 -0700487 .attr = {.name = __stringify(_name), .mode = _mode }, \
488 .show = _show, \
489 .store = _store, \
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700490};
491
Douglas Thompson079708b2007-07-19 01:49:58 -0700492BLOCK_ATTR(ce_count, S_IRUGO, block_ce_count_show, NULL);
493BLOCK_ATTR(ue_count, S_IRUGO, block_ue_count_show, NULL);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700494
495/* list of edac_dev 'block' attributes */
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700496static struct edac_dev_sysfs_block_attribute *device_block_attr[] = {
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700497 &attr_block_ce_count,
498 &attr_block_ue_count,
499 NULL,
500};
501
502/* The 'ktype' for each edac_dev 'block' */
503static struct kobj_type ktype_block_ctrl = {
504 .release = edac_device_ctrl_block_release,
505 .sysfs_ops = &device_block_ops,
Douglas Thompson079708b2007-07-19 01:49:58 -0700506 .default_attrs = (struct attribute **)device_block_attr,
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700507};
508
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700509/* block ctor/dtor code */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700510
511/*
512 * edac_device_create_block
513 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700514static int edac_device_create_block(struct edac_device_ctl_info *edac_dev,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700515 struct edac_device_instance *instance,
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700516 struct edac_device_block *block)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700517{
Douglas Thompsonfd309a92007-07-19 01:50:25 -0700518 int i;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700519 int err;
Douglas Thompsonfd309a92007-07-19 01:50:25 -0700520 struct edac_dev_sysfs_block_attribute *sysfs_attrib;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700521 struct kobject *main_kobj;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700522
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700523 debugf4("%s() Instance '%s' inst_p=%p block '%s' block_p=%p\n",
524 __func__, instance->name, instance, block->name, block);
525 debugf4("%s() block kobj=%p block kobj->parent=%p\n",
526 __func__, &block->kobj, &block->kobj.parent);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700527
528 /* init this block's kobject */
Douglas Thompson079708b2007-07-19 01:49:58 -0700529 memset(&block->kobj, 0, sizeof(struct kobject));
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700530
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700531 /* bump the main kobject's reference count for this controller
532 * and this instance is dependant on the main
533 */
534 main_kobj = kobject_get(&edac_dev->kobj);
535 if (!main_kobj) {
536 err = -ENODEV;
537 goto err_out;
538 }
539
540 /* Add this block's kobject */
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400541 err = kobject_init_and_add(&block->kobj, &ktype_block_ctrl,
542 &instance->kobj,
543 "%s", block->name);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700544 if (err) {
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700545 debugf1("%s() Failed to register instance '%s'\n",
Douglas Thompson079708b2007-07-19 01:49:58 -0700546 __func__, block->name);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700547 kobject_put(main_kobj);
548 err = -ENODEV;
549 goto err_out;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700550 }
551
Douglas Thompsonfd309a92007-07-19 01:50:25 -0700552 /* If there are driver level block attributes, then added them
553 * to the block kobject
554 */
555 sysfs_attrib = block->block_attributes;
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700556 if (sysfs_attrib && block->nr_attribs) {
557 for (i = 0; i < block->nr_attribs; i++, sysfs_attrib++) {
558
559 debugf4("%s() creating block attrib='%s' "
560 "attrib->%p to kobj=%p\n",
561 __func__,
562 sysfs_attrib->attr.name,
563 sysfs_attrib, &block->kobj);
564
565 /* Create each block_attribute file */
Douglas Thompsonfd309a92007-07-19 01:50:25 -0700566 err = sysfs_create_file(&block->kobj,
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700567 &sysfs_attrib->attr);
Douglas Thompsonfd309a92007-07-19 01:50:25 -0700568 if (err)
569 goto err_on_attrib;
Douglas Thompsonfd309a92007-07-19 01:50:25 -0700570 }
571 }
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400572 kobject_uevent(&block->kobj, KOBJ_ADD);
Douglas Thompsonfd309a92007-07-19 01:50:25 -0700573
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700574 return 0;
Douglas Thompsonfd309a92007-07-19 01:50:25 -0700575
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700576 /* Error unwind stack */
Douglas Thompsonfd309a92007-07-19 01:50:25 -0700577err_on_attrib:
Greg Kroah-Hartmanc10997f2007-12-20 08:13:05 -0800578 kobject_put(&block->kobj);
Douglas Thompsonfd309a92007-07-19 01:50:25 -0700579
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700580err_out:
Douglas Thompsonfd309a92007-07-19 01:50:25 -0700581 return err;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700582}
583
584/*
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700585 * edac_device_delete_block(edac_dev,block);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700586 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700587static void edac_device_delete_block(struct edac_device_ctl_info *edac_dev,
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700588 struct edac_device_block *block)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700589{
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700590 struct edac_dev_sysfs_block_attribute *sysfs_attrib;
591 int i;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700592
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700593 /* if this block has 'attributes' then we need to iterate over the list
594 * and 'remove' the attributes on this block
595 */
596 sysfs_attrib = block->block_attributes;
597 if (sysfs_attrib && block->nr_attribs) {
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700598 for (i = 0; i < block->nr_attribs; i++, sysfs_attrib++) {
599
600 /* remove each block_attrib file */
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700601 sysfs_remove_file(&block->kobj,
602 (struct attribute *) sysfs_attrib);
603 }
604 }
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700605
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700606 /* unregister this block's kobject, SEE:
607 * edac_device_ctrl_block_release() callback operation
608 */
Greg Kroah-Hartmanc10997f2007-12-20 08:13:05 -0800609 kobject_put(&block->kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700610}
611
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700612/* instance ctor/dtor code */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700613
614/*
615 * edac_device_create_instance
616 * create just one instance of an edac_device 'instance'
617 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700618static int edac_device_create_instance(struct edac_device_ctl_info *edac_dev,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700619 int idx)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700620{
621 int i, j;
622 int err;
623 struct edac_device_instance *instance;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700624 struct kobject *main_kobj;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700625
626 instance = &edac_dev->instances[idx];
627
628 /* Init the instance's kobject */
Douglas Thompson079708b2007-07-19 01:49:58 -0700629 memset(&instance->kobj, 0, sizeof(struct kobject));
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700630
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700631 instance->ctl = edac_dev;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700632
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700633 /* bump the main kobject's reference count for this controller
634 * and this instance is dependant on the main
635 */
636 main_kobj = kobject_get(&edac_dev->kobj);
637 if (!main_kobj) {
638 err = -ENODEV;
639 goto err_out;
640 }
641
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400642 /* Formally register this instance's kobject under the edac_device */
643 err = kobject_init_and_add(&instance->kobj, &ktype_instance_ctrl,
644 &edac_dev->kobj, "%s", instance->name);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700645 if (err != 0) {
646 debugf2("%s() Failed to register instance '%s'\n",
Douglas Thompson079708b2007-07-19 01:49:58 -0700647 __func__, instance->name);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700648 kobject_put(main_kobj);
649 goto err_out;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700650 }
651
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700652 debugf4("%s() now register '%d' blocks for instance %d\n",
Douglas Thompson079708b2007-07-19 01:49:58 -0700653 __func__, instance->nr_blocks, idx);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700654
655 /* register all blocks of this instance */
Douglas Thompson079708b2007-07-19 01:49:58 -0700656 for (i = 0; i < instance->nr_blocks; i++) {
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700657 err = edac_device_create_block(edac_dev, instance,
658 &instance->blocks[i]);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700659 if (err) {
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700660 /* If any fail, remove all previous ones */
Douglas Thompson52490c82007-07-19 01:50:20 -0700661 for (j = 0; j < i; j++)
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700662 edac_device_delete_block(edac_dev,
663 &instance->blocks[j]);
664 goto err_release_instance_kobj;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700665 }
666 }
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400667 kobject_uevent(&instance->kobj, KOBJ_ADD);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700668
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700669 debugf4("%s() Registered instance %d '%s' kobject\n",
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700670 __func__, idx, instance->name);
671
672 return 0;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700673
674 /* error unwind stack */
675err_release_instance_kobj:
Greg Kroah-Hartmanc10997f2007-12-20 08:13:05 -0800676 kobject_put(&instance->kobj);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700677
678err_out:
679 return err;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700680}
681
682/*
683 * edac_device_remove_instance
684 * remove an edac_device instance
685 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700686static void edac_device_delete_instance(struct edac_device_ctl_info *edac_dev,
687 int idx)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700688{
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700689 struct edac_device_instance *instance;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700690 int i;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700691
692 instance = &edac_dev->instances[idx];
693
694 /* unregister all blocks in this instance */
Douglas Thompson52490c82007-07-19 01:50:20 -0700695 for (i = 0; i < instance->nr_blocks; i++)
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700696 edac_device_delete_block(edac_dev, &instance->blocks[i]);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700697
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700698 /* unregister this instance's kobject, SEE:
699 * edac_device_ctrl_instance_release() for callback operation
700 */
Greg Kroah-Hartmanc10997f2007-12-20 08:13:05 -0800701 kobject_put(&instance->kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700702}
703
704/*
705 * edac_device_create_instances
706 * create the first level of 'instances' for this device
707 * (ie 'cache' might have 'cache0', 'cache1', 'cache2', etc
708 */
709static int edac_device_create_instances(struct edac_device_ctl_info *edac_dev)
710{
711 int i, j;
712 int err;
713
714 debugf0("%s()\n", __func__);
715
716 /* iterate over creation of the instances */
Douglas Thompson079708b2007-07-19 01:49:58 -0700717 for (i = 0; i < edac_dev->nr_instances; i++) {
718 err = edac_device_create_instance(edac_dev, i);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700719 if (err) {
720 /* unwind previous instances on error */
Douglas Thompson52490c82007-07-19 01:50:20 -0700721 for (j = 0; j < i; j++)
Douglas Thompson079708b2007-07-19 01:49:58 -0700722 edac_device_delete_instance(edac_dev, j);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700723 return err;
724 }
725 }
726
727 return 0;
728}
729
730/*
731 * edac_device_delete_instances(edac_dev);
732 * unregister all the kobjects of the instances
733 */
734static void edac_device_delete_instances(struct edac_device_ctl_info *edac_dev)
735{
736 int i;
737
738 /* iterate over creation of the instances */
Douglas Thompson52490c82007-07-19 01:50:20 -0700739 for (i = 0; i < edac_dev->nr_instances; i++)
Douglas Thompson079708b2007-07-19 01:49:58 -0700740 edac_device_delete_instance(edac_dev, i);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700741}
742
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700743/* edac_dev sysfs ctor/dtor code */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700744
745/*
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700746 * edac_device_add_main_sysfs_attributes
Douglas Thompson42a8e392007-07-19 01:50:10 -0700747 * add some attributes to this instance's main kobject
748 */
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700749static int edac_device_add_main_sysfs_attributes(
Douglas Thompson42a8e392007-07-19 01:50:10 -0700750 struct edac_device_ctl_info *edac_dev)
751{
Douglas Thompson052dfb42007-07-19 01:50:13 -0700752 struct edac_dev_sysfs_attribute *sysfs_attrib;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700753 int err = 0;
Douglas Thompson42a8e392007-07-19 01:50:10 -0700754
Douglas Thompson052dfb42007-07-19 01:50:13 -0700755 sysfs_attrib = edac_dev->sysfs_attributes;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700756 if (sysfs_attrib) {
757 /* iterate over the array and create an attribute for each
758 * entry in the list
759 */
760 while (sysfs_attrib->attr.name != NULL) {
761 err = sysfs_create_file(&edac_dev->kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700762 (struct attribute*) sysfs_attrib);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700763 if (err)
764 goto err_out;
Douglas Thompson42a8e392007-07-19 01:50:10 -0700765
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700766 sysfs_attrib++;
767 }
Douglas Thompson052dfb42007-07-19 01:50:13 -0700768 }
Douglas Thompson42a8e392007-07-19 01:50:10 -0700769
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700770err_out:
771 return err;
772}
773
774/*
775 * edac_device_remove_main_sysfs_attributes
776 * remove any attributes to this instance's main kobject
777 */
778static void edac_device_remove_main_sysfs_attributes(
779 struct edac_device_ctl_info *edac_dev)
780{
781 struct edac_dev_sysfs_attribute *sysfs_attrib;
782
783 /* if there are main attributes, defined, remove them. First,
784 * point to the start of the array and iterate over it
785 * removing each attribute listed from this device's instance's kobject
786 */
787 sysfs_attrib = edac_dev->sysfs_attributes;
788 if (sysfs_attrib) {
789 while (sysfs_attrib->attr.name != NULL) {
790 sysfs_remove_file(&edac_dev->kobj,
791 (struct attribute *) sysfs_attrib);
792 sysfs_attrib++;
793 }
794 }
Douglas Thompson42a8e392007-07-19 01:50:10 -0700795}
796
797/*
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700798 * edac_device_create_sysfs() Constructor
799 *
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700800 * accept a created edac_device control structure
801 * and 'export' it to sysfs. The 'main' kobj should already have been
802 * created. 'instance' and 'block' kobjects should be registered
803 * along with any 'block' attributes from the low driver. In addition,
804 * the main attributes (if any) are connected to the main kobject of
805 * the control structure.
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700806 *
807 * Return:
808 * 0 Success
809 * !0 Failure
810 */
811int edac_device_create_sysfs(struct edac_device_ctl_info *edac_dev)
812{
813 int err;
Douglas Thompson079708b2007-07-19 01:49:58 -0700814 struct kobject *edac_kobj = &edac_dev->kobj;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700815
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700816 debugf0("%s() idx=%d\n", __func__, edac_dev->dev_idx);
817
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700818 /* go create any main attributes callers wants */
819 err = edac_device_add_main_sysfs_attributes(edac_dev);
820 if (err) {
821 debugf0("%s() failed to add sysfs attribs\n", __func__);
822 goto err_out;
Douglas Thompson42a8e392007-07-19 01:50:10 -0700823 }
824
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700825 /* create a symlink from the edac device
826 * to the platform 'device' being used for this
827 */
828 err = sysfs_create_link(edac_kobj,
Douglas Thompson079708b2007-07-19 01:49:58 -0700829 &edac_dev->dev->kobj, EDAC_DEVICE_SYMLINK);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700830 if (err) {
831 debugf0("%s() sysfs_create_link() returned err= %d\n",
832 __func__, err);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700833 goto err_remove_main_attribs;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700834 }
835
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700836 /* Create the first level instance directories
837 * In turn, the nested blocks beneath the instances will
838 * be registered as well
839 */
840 err = edac_device_create_instances(edac_dev);
841 if (err) {
842 debugf0("%s() edac_device_create_instances() "
843 "returned err= %d\n", __func__, err);
844 goto err_remove_link;
845 }
846
847
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700848 debugf4("%s() create-instances done, idx=%d\n",
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700849 __func__, edac_dev->dev_idx);
850
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700851 return 0;
852
853 /* Error unwind stack */
Douglas Thompson42a8e392007-07-19 01:50:10 -0700854err_remove_link:
855 /* remove the sym link */
856 sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700857
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700858err_remove_main_attribs:
859 edac_device_remove_main_sysfs_attributes(edac_dev);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700860
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700861err_out:
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700862 return err;
863}
864
865/*
866 * edac_device_remove_sysfs() destructor
867 *
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700868 * given an edac_device struct, tear down the kobject resources
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700869 */
870void edac_device_remove_sysfs(struct edac_device_ctl_info *edac_dev)
871{
872 debugf0("%s()\n", __func__);
873
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700874 /* remove any main attributes for this device */
875 edac_device_remove_main_sysfs_attributes(edac_dev);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700876
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700877 /* remove the device sym link */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700878 sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK);
879
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700880 /* walk the instance/block kobject tree, deconstructing it */
881 edac_device_delete_instances(edac_dev);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700882}