blob: 400de071cabc38fdc4b7e3575b0ed1ab5f44995f [file] [log] [blame]
Douglas Thompsone27e3da2007-07-19 01:49:36 -07001/*
2 * file for managing the edac_device class of devices for EDAC
3 *
Justin P. Mattock631dd1a2010-10-18 11:03:14 +02004 * (C) 2007 SoftwareBitMaker
Douglas Thompson1c3631f2007-07-19 01:50:29 -07005 *
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>
Borislav Petkov30e1f7a2010-09-02 17:26:48 +020016#include <linux/edac.h>
Douglas Thompsone27e3da2007-07-19 01:49:36 -070017
18#include "edac_core.h"
19#include "edac_module.h"
20
Douglas Thompsone27e3da2007-07-19 01:49:36 -070021#define EDAC_DEVICE_SYMLINK "device"
22
23#define to_edacdev(k) container_of(k, struct edac_device_ctl_info, kobj)
24#define to_edacdev_attr(a) container_of(a, struct edacdev_attribute, attr)
25
Douglas Thompsone27e3da2007-07-19 01:49:36 -070026
27/*
28 * Set of edac_device_ctl_info attribute store/show functions
29 */
30
31/* 'log_ue' */
Douglas Thompson079708b2007-07-19 01:49:58 -070032static ssize_t edac_device_ctl_log_ue_show(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070033 *ctl_info, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070034{
Douglas Thompson079708b2007-07-19 01:49:58 -070035 return sprintf(data, "%u\n", ctl_info->log_ue);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070036}
37
Douglas Thompson079708b2007-07-19 01:49:58 -070038static ssize_t edac_device_ctl_log_ue_store(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070039 *ctl_info, const char *data,
40 size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070041{
42 /* if parameter is zero, turn off flag, if non-zero turn on flag */
Douglas Thompson079708b2007-07-19 01:49:58 -070043 ctl_info->log_ue = (simple_strtoul(data, NULL, 0) != 0);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070044
Douglas Thompson079708b2007-07-19 01:49:58 -070045 return count;
Douglas Thompsone27e3da2007-07-19 01:49:36 -070046}
47
48/* 'log_ce' */
Douglas Thompson079708b2007-07-19 01:49:58 -070049static ssize_t edac_device_ctl_log_ce_show(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070050 *ctl_info, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070051{
Douglas Thompson079708b2007-07-19 01:49:58 -070052 return sprintf(data, "%u\n", ctl_info->log_ce);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070053}
54
Douglas Thompson079708b2007-07-19 01:49:58 -070055static ssize_t edac_device_ctl_log_ce_store(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070056 *ctl_info, const char *data,
57 size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070058{
59 /* if parameter is zero, turn off flag, if non-zero turn on flag */
Douglas Thompson079708b2007-07-19 01:49:58 -070060 ctl_info->log_ce = (simple_strtoul(data, NULL, 0) != 0);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070061
Douglas Thompson079708b2007-07-19 01:49:58 -070062 return count;
Douglas Thompsone27e3da2007-07-19 01:49:36 -070063}
64
Douglas Thompsone27e3da2007-07-19 01:49:36 -070065/* 'panic_on_ue' */
Douglas Thompson079708b2007-07-19 01:49:58 -070066static ssize_t edac_device_ctl_panic_on_ue_show(struct edac_device_ctl_info
67 *ctl_info, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070068{
Douglas Thompson079708b2007-07-19 01:49:58 -070069 return sprintf(data, "%u\n", ctl_info->panic_on_ue);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070070}
71
Douglas Thompson079708b2007-07-19 01:49:58 -070072static ssize_t edac_device_ctl_panic_on_ue_store(struct edac_device_ctl_info
73 *ctl_info, const char *data,
74 size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070075{
76 /* if parameter is zero, turn off flag, if non-zero turn on flag */
Douglas Thompson079708b2007-07-19 01:49:58 -070077 ctl_info->panic_on_ue = (simple_strtoul(data, NULL, 0) != 0);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070078
79 return count;
80}
81
82/* 'poll_msec' show and store functions*/
Douglas Thompson079708b2007-07-19 01:49:58 -070083static ssize_t edac_device_ctl_poll_msec_show(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070084 *ctl_info, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070085{
Douglas Thompson079708b2007-07-19 01:49:58 -070086 return sprintf(data, "%u\n", ctl_info->poll_msec);
Douglas Thompsone27e3da2007-07-19 01:49:36 -070087}
88
Douglas Thompson079708b2007-07-19 01:49:58 -070089static ssize_t edac_device_ctl_poll_msec_store(struct edac_device_ctl_info
Douglas Thompson052dfb42007-07-19 01:50:13 -070090 *ctl_info, const char *data,
91 size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -070092{
93 unsigned long value;
94
95 /* get the value and enforce that it is non-zero, must be at least
96 * one millisecond for the delay period, between scans
97 * Then cancel last outstanding delay for the work request
98 * and set a new one.
99 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700100 value = simple_strtoul(data, NULL, 0);
101 edac_device_reset_delay_period(ctl_info, value);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700102
Douglas Thompson079708b2007-07-19 01:49:58 -0700103 return count;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700104}
105
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700106/* edac_device_ctl_info specific attribute structure */
107struct ctl_info_attribute {
Douglas Thompson079708b2007-07-19 01:49:58 -0700108 struct attribute attr;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700109 ssize_t(*show) (struct edac_device_ctl_info *, char *);
110 ssize_t(*store) (struct edac_device_ctl_info *, const char *, size_t);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700111};
112
113#define to_ctl_info(k) container_of(k, struct edac_device_ctl_info, kobj)
114#define to_ctl_info_attr(a) container_of(a,struct ctl_info_attribute,attr)
115
116/* Function to 'show' fields from the edac_dev 'ctl_info' structure */
117static ssize_t edac_dev_ctl_info_show(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700118 struct attribute *attr, char *buffer)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700119{
Douglas Thompson079708b2007-07-19 01:49:58 -0700120 struct edac_device_ctl_info *edac_dev = to_ctl_info(kobj);
121 struct ctl_info_attribute *ctl_info_attr = to_ctl_info_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700122
Douglas Thompson079708b2007-07-19 01:49:58 -0700123 if (ctl_info_attr->show)
124 return ctl_info_attr->show(edac_dev, buffer);
125 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700126}
127
128/* Function to 'store' fields into the edac_dev 'ctl_info' structure */
129static ssize_t edac_dev_ctl_info_store(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700130 struct attribute *attr,
131 const char *buffer, size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700132{
Douglas Thompson079708b2007-07-19 01:49:58 -0700133 struct edac_device_ctl_info *edac_dev = to_ctl_info(kobj);
134 struct ctl_info_attribute *ctl_info_attr = to_ctl_info_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700135
Douglas Thompson079708b2007-07-19 01:49:58 -0700136 if (ctl_info_attr->store)
137 return ctl_info_attr->store(edac_dev, buffer, count);
138 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700139}
140
141/* edac_dev file operations for an 'ctl_info' */
Emese Revfy52cf25d2010-01-19 02:58:23 +0100142static const struct sysfs_ops device_ctl_info_ops = {
Douglas Thompson079708b2007-07-19 01:49:58 -0700143 .show = edac_dev_ctl_info_show,
144 .store = edac_dev_ctl_info_store
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700145};
146
147#define CTL_INFO_ATTR(_name,_mode,_show,_store) \
148static struct ctl_info_attribute attr_ctl_info_##_name = { \
Douglas Thompson052dfb42007-07-19 01:50:13 -0700149 .attr = {.name = __stringify(_name), .mode = _mode }, \
150 .show = _show, \
151 .store = _store, \
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700152};
153
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700154/* Declare the various ctl_info attributes here and their respective ops */
Douglas Thompson079708b2007-07-19 01:49:58 -0700155CTL_INFO_ATTR(log_ue, S_IRUGO | S_IWUSR,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700156 edac_device_ctl_log_ue_show, edac_device_ctl_log_ue_store);
Douglas Thompson079708b2007-07-19 01:49:58 -0700157CTL_INFO_ATTR(log_ce, S_IRUGO | S_IWUSR,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700158 edac_device_ctl_log_ce_show, edac_device_ctl_log_ce_store);
Douglas Thompson079708b2007-07-19 01:49:58 -0700159CTL_INFO_ATTR(panic_on_ue, S_IRUGO | S_IWUSR,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700160 edac_device_ctl_panic_on_ue_show,
161 edac_device_ctl_panic_on_ue_store);
Douglas Thompson079708b2007-07-19 01:49:58 -0700162CTL_INFO_ATTR(poll_msec, S_IRUGO | S_IWUSR,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700163 edac_device_ctl_poll_msec_show, edac_device_ctl_poll_msec_store);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700164
165/* Base Attributes of the EDAC_DEVICE ECC object */
166static struct ctl_info_attribute *device_ctrl_attr[] = {
167 &attr_ctl_info_panic_on_ue,
168 &attr_ctl_info_log_ue,
169 &attr_ctl_info_log_ce,
170 &attr_ctl_info_poll_msec,
171 NULL,
172};
173
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700174/*
175 * edac_device_ctrl_master_release
176 *
177 * called when the reference count for the 'main' kobj
178 * for a edac_device control struct reaches zero
179 *
180 * Reference count model:
181 * One 'main' kobject for each control structure allocated.
182 * That main kobj is initially set to one AND
183 * the reference count for the EDAC 'core' module is
184 * bumped by one, thus added 'keep in memory' dependency.
185 *
186 * Each new internal kobj (in instances and blocks) then
187 * bumps the 'main' kobject.
188 *
189 * When they are released their release functions decrement
190 * the 'main' kobj.
191 *
192 * When the main kobj reaches zero (0) then THIS function
193 * is called which then decrements the EDAC 'core' module.
194 * When the module reference count reaches zero then the
195 * module no longer has dependency on keeping the release
196 * function code in memory and module can be unloaded.
197 *
198 * This will support several control objects as well, each
199 * with its own 'main' kobj.
200 */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700201static void edac_device_ctrl_master_release(struct kobject *kobj)
202{
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700203 struct edac_device_ctl_info *edac_dev = to_edacdev(kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700204
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700205 debugf4("%s() control index=%d\n", __func__, edac_dev->dev_idx);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700206
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700207 /* decrement the EDAC CORE module ref count */
208 module_put(edac_dev->owner);
209
210 /* free the control struct containing the 'main' kobj
211 * passed in to this routine
212 */
213 kfree(edac_dev);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700214}
215
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700216/* ktype for the main (master) kobject */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700217static struct kobj_type ktype_device_ctrl = {
218 .release = edac_device_ctrl_master_release,
219 .sysfs_ops = &device_ctl_info_ops,
Douglas Thompson079708b2007-07-19 01:49:58 -0700220 .default_attrs = (struct attribute **)device_ctrl_attr,
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700221};
222
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700223/*
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700224 * edac_device_register_sysfs_main_kobj
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700225 *
226 * perform the high level setup for the new edac_device instance
227 *
228 * Return: 0 SUCCESS
229 * !0 FAILURE
230 */
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700231int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700232{
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700233 struct sysdev_class *edac_class;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700234 int err;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700235
236 debugf1("%s()\n", __func__);
237
Douglas Thompson079708b2007-07-19 01:49:58 -0700238 /* get the /sys/devices/system/edac reference */
Borislav Petkov30e1f7a2010-09-02 17:26:48 +0200239 edac_class = edac_get_sysfs_class();
Douglas Thompson079708b2007-07-19 01:49:58 -0700240 if (edac_class == NULL) {
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700241 debugf1("%s() no edac_class error\n", __func__);
242 err = -ENODEV;
243 goto err_out;
Douglas Thompson079708b2007-07-19 01:49:58 -0700244 }
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700245
246 /* Point to the 'edac_class' this instance 'reports' to */
247 edac_dev->edac_class = edac_class;
248
249 /* Init the devices's kobject */
Douglas Thompson079708b2007-07-19 01:49:58 -0700250 memset(&edac_dev->kobj, 0, sizeof(struct kobject));
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700251
252 /* Record which module 'owns' this control structure
253 * and bump the ref count of the module
254 */
255 edac_dev->owner = THIS_MODULE;
256
257 if (!try_module_get(edac_dev->owner)) {
258 err = -ENODEV;
Borislav Petkov30e1f7a2010-09-02 17:26:48 +0200259 goto err_mod_get;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700260 }
261
262 /* register */
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400263 err = kobject_init_and_add(&edac_dev->kobj, &ktype_device_ctrl,
264 &edac_class->kset.kobj,
265 "%s", edac_dev->name);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700266 if (err) {
267 debugf1("%s()Failed to register '.../edac/%s'\n",
Douglas Thompson079708b2007-07-19 01:49:58 -0700268 __func__, edac_dev->name);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700269 goto err_kobj_reg;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700270 }
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400271 kobject_uevent(&edac_dev->kobj, KOBJ_ADD);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700272
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700273 /* At this point, to 'free' the control struct,
274 * edac_device_unregister_sysfs_main_kobj() must be used
275 */
276
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700277 debugf4("%s() Registered '.../edac/%s' kobject\n",
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700278 __func__, edac_dev->name);
279
280 return 0;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700281
282 /* Error exit stack */
283err_kobj_reg:
284 module_put(edac_dev->owner);
285
Borislav Petkov30e1f7a2010-09-02 17:26:48 +0200286err_mod_get:
287 edac_put_sysfs_class();
288
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700289err_out:
290 return err;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700291}
292
293/*
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700294 * edac_device_unregister_sysfs_main_kobj:
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700295 * the '..../edac/<name>' kobject
296 */
Borislav Petkov30e1f7a2010-09-02 17:26:48 +0200297void edac_device_unregister_sysfs_main_kobj(struct edac_device_ctl_info *dev)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700298{
299 debugf0("%s()\n", __func__);
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700300 debugf4("%s() name of kobject is: %s\n",
Borislav Petkov30e1f7a2010-09-02 17:26:48 +0200301 __func__, kobject_name(&dev->kobj));
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700302
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700303 /*
304 * Unregister the edac device's kobject and
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700305 * allow for reference count to reach 0 at which point
306 * the callback will be called to:
307 * a) module_put() this module
308 * b) 'kfree' the memory
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700309 */
Borislav Petkov30e1f7a2010-09-02 17:26:48 +0200310 kobject_put(&dev->kobj);
311 edac_put_sysfs_class();
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700312}
313
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700314/* edac_dev -> instance information */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700315
316/*
317 * Set of low-level instance attribute show functions
318 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700319static ssize_t instance_ue_count_show(struct edac_device_instance *instance,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700320 char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700321{
Douglas Thompson079708b2007-07-19 01:49:58 -0700322 return sprintf(data, "%u\n", instance->counters.ue_count);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700323}
324
Douglas Thompson079708b2007-07-19 01:49:58 -0700325static ssize_t instance_ce_count_show(struct edac_device_instance *instance,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700326 char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700327{
Douglas Thompson079708b2007-07-19 01:49:58 -0700328 return sprintf(data, "%u\n", instance->counters.ce_count);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700329}
330
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700331#define to_instance(k) container_of(k, struct edac_device_instance, kobj)
332#define to_instance_attr(a) container_of(a,struct instance_attribute,attr)
333
334/* DEVICE instance kobject release() function */
335static void edac_device_ctrl_instance_release(struct kobject *kobj)
336{
337 struct edac_device_instance *instance;
338
339 debugf1("%s()\n", __func__);
340
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700341 /* map from this kobj to the main control struct
342 * and then dec the main kobj count
343 */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700344 instance = to_instance(kobj);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700345 kobject_put(&instance->ctl->kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700346}
347
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700348/* instance specific attribute structure */
349struct instance_attribute {
Douglas Thompson079708b2007-07-19 01:49:58 -0700350 struct attribute attr;
Douglas Thompson52490c82007-07-19 01:50:20 -0700351 ssize_t(*show) (struct edac_device_instance *, char *);
352 ssize_t(*store) (struct edac_device_instance *, const char *, size_t);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700353};
354
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700355/* Function to 'show' fields from the edac_dev 'instance' structure */
356static ssize_t edac_dev_instance_show(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700357 struct attribute *attr, char *buffer)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700358{
Douglas Thompson079708b2007-07-19 01:49:58 -0700359 struct edac_device_instance *instance = to_instance(kobj);
360 struct instance_attribute *instance_attr = to_instance_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700361
Douglas Thompson079708b2007-07-19 01:49:58 -0700362 if (instance_attr->show)
363 return instance_attr->show(instance, buffer);
364 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700365}
366
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700367/* Function to 'store' fields into the edac_dev 'instance' structure */
368static ssize_t edac_dev_instance_store(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700369 struct attribute *attr,
370 const char *buffer, size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700371{
Douglas Thompson079708b2007-07-19 01:49:58 -0700372 struct edac_device_instance *instance = to_instance(kobj);
373 struct instance_attribute *instance_attr = to_instance_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700374
Douglas Thompson079708b2007-07-19 01:49:58 -0700375 if (instance_attr->store)
376 return instance_attr->store(instance, buffer, count);
377 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700378}
379
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700380/* edac_dev file operations for an 'instance' */
Emese Revfy52cf25d2010-01-19 02:58:23 +0100381static const struct sysfs_ops device_instance_ops = {
Douglas Thompson079708b2007-07-19 01:49:58 -0700382 .show = edac_dev_instance_show,
383 .store = edac_dev_instance_store
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700384};
385
386#define INSTANCE_ATTR(_name,_mode,_show,_store) \
387static struct instance_attribute attr_instance_##_name = { \
Douglas Thompson052dfb42007-07-19 01:50:13 -0700388 .attr = {.name = __stringify(_name), .mode = _mode }, \
389 .show = _show, \
390 .store = _store, \
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700391};
392
393/*
394 * Define attributes visible for the edac_device instance object
395 * Each contains a pointer to a show and an optional set
396 * function pointer that does the low level output/input
397 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700398INSTANCE_ATTR(ce_count, S_IRUGO, instance_ce_count_show, NULL);
399INSTANCE_ATTR(ue_count, S_IRUGO, instance_ue_count_show, NULL);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700400
401/* list of edac_dev 'instance' attributes */
402static struct instance_attribute *device_instance_attr[] = {
403 &attr_instance_ce_count,
404 &attr_instance_ue_count,
405 NULL,
406};
407
408/* The 'ktype' for each edac_dev 'instance' */
409static struct kobj_type ktype_instance_ctrl = {
410 .release = edac_device_ctrl_instance_release,
411 .sysfs_ops = &device_instance_ops,
Douglas Thompson079708b2007-07-19 01:49:58 -0700412 .default_attrs = (struct attribute **)device_instance_attr,
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700413};
414
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700415/* edac_dev -> instance -> block information */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700416
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700417#define to_block(k) container_of(k, struct edac_device_block, kobj)
418#define to_block_attr(a) \
419 container_of(a, struct edac_dev_sysfs_block_attribute, attr)
420
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700421/*
422 * Set of low-level block attribute show functions
423 */
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700424static ssize_t block_ue_count_show(struct kobject *kobj,
425 struct attribute *attr, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700426{
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700427 struct edac_device_block *block = to_block(kobj);
428
Douglas Thompson079708b2007-07-19 01:49:58 -0700429 return sprintf(data, "%u\n", block->counters.ue_count);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700430}
431
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700432static ssize_t block_ce_count_show(struct kobject *kobj,
433 struct attribute *attr, char *data)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700434{
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700435 struct edac_device_block *block = to_block(kobj);
436
Douglas Thompson079708b2007-07-19 01:49:58 -0700437 return sprintf(data, "%u\n", block->counters.ce_count);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700438}
439
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700440/* DEVICE block kobject release() function */
441static void edac_device_ctrl_block_release(struct kobject *kobj)
442{
443 struct edac_device_block *block;
444
445 debugf1("%s()\n", __func__);
446
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700447 /* get the container of the kobj */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700448 block = to_block(kobj);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700449
450 /* map from 'block kobj' to 'block->instance->controller->main_kobj'
451 * now 'release' the block kobject
452 */
453 kobject_put(&block->instance->ctl->kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700454}
455
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700456
457/* Function to 'show' fields from the edac_dev 'block' structure */
458static ssize_t edac_dev_block_show(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700459 struct attribute *attr, char *buffer)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700460{
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700461 struct edac_dev_sysfs_block_attribute *block_attr =
462 to_block_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700463
Douglas Thompson079708b2007-07-19 01:49:58 -0700464 if (block_attr->show)
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700465 return block_attr->show(kobj, attr, buffer);
Douglas Thompson079708b2007-07-19 01:49:58 -0700466 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700467}
468
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700469/* Function to 'store' fields into the edac_dev 'block' structure */
470static ssize_t edac_dev_block_store(struct kobject *kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700471 struct attribute *attr,
472 const char *buffer, size_t count)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700473{
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700474 struct edac_dev_sysfs_block_attribute *block_attr;
475
476 block_attr = to_block_attr(attr);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700477
Douglas Thompson079708b2007-07-19 01:49:58 -0700478 if (block_attr->store)
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700479 return block_attr->store(kobj, attr, buffer, count);
Douglas Thompson079708b2007-07-19 01:49:58 -0700480 return -EIO;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700481}
482
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700483/* edac_dev file operations for a 'block' */
Emese Revfy52cf25d2010-01-19 02:58:23 +0100484static const struct sysfs_ops device_block_ops = {
Douglas Thompson079708b2007-07-19 01:49:58 -0700485 .show = edac_dev_block_show,
486 .store = edac_dev_block_store
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700487};
488
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700489#define BLOCK_ATTR(_name,_mode,_show,_store) \
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700490static struct edac_dev_sysfs_block_attribute attr_block_##_name = { \
Douglas Thompson052dfb42007-07-19 01:50:13 -0700491 .attr = {.name = __stringify(_name), .mode = _mode }, \
492 .show = _show, \
493 .store = _store, \
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700494};
495
Douglas Thompson079708b2007-07-19 01:49:58 -0700496BLOCK_ATTR(ce_count, S_IRUGO, block_ce_count_show, NULL);
497BLOCK_ATTR(ue_count, S_IRUGO, block_ue_count_show, NULL);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700498
499/* list of edac_dev 'block' attributes */
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700500static struct edac_dev_sysfs_block_attribute *device_block_attr[] = {
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700501 &attr_block_ce_count,
502 &attr_block_ue_count,
503 NULL,
504};
505
506/* The 'ktype' for each edac_dev 'block' */
507static struct kobj_type ktype_block_ctrl = {
508 .release = edac_device_ctrl_block_release,
509 .sysfs_ops = &device_block_ops,
Douglas Thompson079708b2007-07-19 01:49:58 -0700510 .default_attrs = (struct attribute **)device_block_attr,
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700511};
512
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700513/* block ctor/dtor code */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700514
515/*
516 * edac_device_create_block
517 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700518static int edac_device_create_block(struct edac_device_ctl_info *edac_dev,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700519 struct edac_device_instance *instance,
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700520 struct edac_device_block *block)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700521{
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700522 int i;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700523 int err;
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700524 struct edac_dev_sysfs_block_attribute *sysfs_attrib;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700525 struct kobject *main_kobj;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700526
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700527 debugf4("%s() Instance '%s' inst_p=%p block '%s' block_p=%p\n",
528 __func__, instance->name, instance, block->name, block);
529 debugf4("%s() block kobj=%p block kobj->parent=%p\n",
530 __func__, &block->kobj, &block->kobj.parent);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700531
532 /* init this block's kobject */
Douglas Thompson079708b2007-07-19 01:49:58 -0700533 memset(&block->kobj, 0, sizeof(struct kobject));
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700534
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700535 /* bump the main kobject's reference count for this controller
536 * and this instance is dependant on the main
537 */
538 main_kobj = kobject_get(&edac_dev->kobj);
539 if (!main_kobj) {
540 err = -ENODEV;
541 goto err_out;
542 }
543
544 /* Add this block's kobject */
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400545 err = kobject_init_and_add(&block->kobj, &ktype_block_ctrl,
546 &instance->kobj,
547 "%s", block->name);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700548 if (err) {
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700549 debugf1("%s() Failed to register instance '%s'\n",
Douglas Thompson079708b2007-07-19 01:49:58 -0700550 __func__, block->name);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700551 kobject_put(main_kobj);
552 err = -ENODEV;
553 goto err_out;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700554 }
555
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700556 /* If there are driver level block attributes, then added them
557 * to the block kobject
558 */
559 sysfs_attrib = block->block_attributes;
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700560 if (sysfs_attrib && block->nr_attribs) {
561 for (i = 0; i < block->nr_attribs; i++, sysfs_attrib++) {
562
563 debugf4("%s() creating block attrib='%s' "
564 "attrib->%p to kobj=%p\n",
565 __func__,
566 sysfs_attrib->attr.name,
567 sysfs_attrib, &block->kobj);
568
569 /* Create each block_attribute file */
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700570 err = sysfs_create_file(&block->kobj,
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700571 &sysfs_attrib->attr);
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700572 if (err)
573 goto err_on_attrib;
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700574 }
575 }
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400576 kobject_uevent(&block->kobj, KOBJ_ADD);
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700577
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700578 return 0;
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700579
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700580 /* Error unwind stack */
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700581err_on_attrib:
Greg Kroah-Hartmanc10997f2007-12-20 08:13:05 -0800582 kobject_put(&block->kobj);
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700583
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700584err_out:
Douglas Thompsonfd309a9d2007-07-19 01:50:25 -0700585 return err;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700586}
587
588/*
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700589 * edac_device_delete_block(edac_dev,block);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700590 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700591static void edac_device_delete_block(struct edac_device_ctl_info *edac_dev,
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700592 struct edac_device_block *block)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700593{
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700594 struct edac_dev_sysfs_block_attribute *sysfs_attrib;
595 int i;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700596
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700597 /* if this block has 'attributes' then we need to iterate over the list
598 * and 'remove' the attributes on this block
599 */
600 sysfs_attrib = block->block_attributes;
601 if (sysfs_attrib && block->nr_attribs) {
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700602 for (i = 0; i < block->nr_attribs; i++, sysfs_attrib++) {
603
604 /* remove each block_attrib file */
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700605 sysfs_remove_file(&block->kobj,
606 (struct attribute *) sysfs_attrib);
607 }
608 }
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700609
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700610 /* unregister this block's kobject, SEE:
611 * edac_device_ctrl_block_release() callback operation
612 */
Greg Kroah-Hartmanc10997f2007-12-20 08:13:05 -0800613 kobject_put(&block->kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700614}
615
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700616/* instance ctor/dtor code */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700617
618/*
619 * edac_device_create_instance
620 * create just one instance of an edac_device 'instance'
621 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700622static int edac_device_create_instance(struct edac_device_ctl_info *edac_dev,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700623 int idx)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700624{
625 int i, j;
626 int err;
627 struct edac_device_instance *instance;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700628 struct kobject *main_kobj;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700629
630 instance = &edac_dev->instances[idx];
631
632 /* Init the instance's kobject */
Douglas Thompson079708b2007-07-19 01:49:58 -0700633 memset(&instance->kobj, 0, sizeof(struct kobject));
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700634
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700635 instance->ctl = edac_dev;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700636
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700637 /* bump the main kobject's reference count for this controller
638 * and this instance is dependant on the main
639 */
640 main_kobj = kobject_get(&edac_dev->kobj);
641 if (!main_kobj) {
642 err = -ENODEV;
643 goto err_out;
644 }
645
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400646 /* Formally register this instance's kobject under the edac_device */
647 err = kobject_init_and_add(&instance->kobj, &ktype_instance_ctrl,
648 &edac_dev->kobj, "%s", instance->name);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700649 if (err != 0) {
650 debugf2("%s() Failed to register instance '%s'\n",
Douglas Thompson079708b2007-07-19 01:49:58 -0700651 __func__, instance->name);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700652 kobject_put(main_kobj);
653 goto err_out;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700654 }
655
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700656 debugf4("%s() now register '%d' blocks for instance %d\n",
Douglas Thompson079708b2007-07-19 01:49:58 -0700657 __func__, instance->nr_blocks, idx);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700658
659 /* register all blocks of this instance */
Douglas Thompson079708b2007-07-19 01:49:58 -0700660 for (i = 0; i < instance->nr_blocks; i++) {
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700661 err = edac_device_create_block(edac_dev, instance,
662 &instance->blocks[i]);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700663 if (err) {
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700664 /* If any fail, remove all previous ones */
Douglas Thompson52490c82007-07-19 01:50:20 -0700665 for (j = 0; j < i; j++)
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700666 edac_device_delete_block(edac_dev,
667 &instance->blocks[j]);
668 goto err_release_instance_kobj;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700669 }
670 }
Greg Kroah-Hartmanb2ed2152007-12-17 15:54:39 -0400671 kobject_uevent(&instance->kobj, KOBJ_ADD);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700672
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700673 debugf4("%s() Registered instance %d '%s' kobject\n",
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700674 __func__, idx, instance->name);
675
676 return 0;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700677
678 /* error unwind stack */
679err_release_instance_kobj:
Greg Kroah-Hartmanc10997f2007-12-20 08:13:05 -0800680 kobject_put(&instance->kobj);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700681
682err_out:
683 return err;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700684}
685
686/*
687 * edac_device_remove_instance
688 * remove an edac_device instance
689 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700690static void edac_device_delete_instance(struct edac_device_ctl_info *edac_dev,
691 int idx)
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700692{
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700693 struct edac_device_instance *instance;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700694 int i;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700695
696 instance = &edac_dev->instances[idx];
697
698 /* unregister all blocks in this instance */
Douglas Thompson52490c82007-07-19 01:50:20 -0700699 for (i = 0; i < instance->nr_blocks; i++)
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700700 edac_device_delete_block(edac_dev, &instance->blocks[i]);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700701
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700702 /* unregister this instance's kobject, SEE:
703 * edac_device_ctrl_instance_release() for callback operation
704 */
Greg Kroah-Hartmanc10997f2007-12-20 08:13:05 -0800705 kobject_put(&instance->kobj);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700706}
707
708/*
709 * edac_device_create_instances
710 * create the first level of 'instances' for this device
711 * (ie 'cache' might have 'cache0', 'cache1', 'cache2', etc
712 */
713static int edac_device_create_instances(struct edac_device_ctl_info *edac_dev)
714{
715 int i, j;
716 int err;
717
718 debugf0("%s()\n", __func__);
719
720 /* iterate over creation of the instances */
Douglas Thompson079708b2007-07-19 01:49:58 -0700721 for (i = 0; i < edac_dev->nr_instances; i++) {
722 err = edac_device_create_instance(edac_dev, i);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700723 if (err) {
724 /* unwind previous instances on error */
Douglas Thompson52490c82007-07-19 01:50:20 -0700725 for (j = 0; j < i; j++)
Douglas Thompson079708b2007-07-19 01:49:58 -0700726 edac_device_delete_instance(edac_dev, j);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700727 return err;
728 }
729 }
730
731 return 0;
732}
733
734/*
735 * edac_device_delete_instances(edac_dev);
736 * unregister all the kobjects of the instances
737 */
738static void edac_device_delete_instances(struct edac_device_ctl_info *edac_dev)
739{
740 int i;
741
742 /* iterate over creation of the instances */
Douglas Thompson52490c82007-07-19 01:50:20 -0700743 for (i = 0; i < edac_dev->nr_instances; i++)
Douglas Thompson079708b2007-07-19 01:49:58 -0700744 edac_device_delete_instance(edac_dev, i);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700745}
746
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700747/* edac_dev sysfs ctor/dtor code */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700748
749/*
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700750 * edac_device_add_main_sysfs_attributes
Douglas Thompson42a8e392007-07-19 01:50:10 -0700751 * add some attributes to this instance's main kobject
752 */
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700753static int edac_device_add_main_sysfs_attributes(
Douglas Thompson42a8e392007-07-19 01:50:10 -0700754 struct edac_device_ctl_info *edac_dev)
755{
Douglas Thompson052dfb42007-07-19 01:50:13 -0700756 struct edac_dev_sysfs_attribute *sysfs_attrib;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700757 int err = 0;
Douglas Thompson42a8e392007-07-19 01:50:10 -0700758
Douglas Thompson052dfb42007-07-19 01:50:13 -0700759 sysfs_attrib = edac_dev->sysfs_attributes;
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700760 if (sysfs_attrib) {
761 /* iterate over the array and create an attribute for each
762 * entry in the list
763 */
764 while (sysfs_attrib->attr.name != NULL) {
765 err = sysfs_create_file(&edac_dev->kobj,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700766 (struct attribute*) sysfs_attrib);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700767 if (err)
768 goto err_out;
Douglas Thompson42a8e392007-07-19 01:50:10 -0700769
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700770 sysfs_attrib++;
771 }
Douglas Thompson052dfb42007-07-19 01:50:13 -0700772 }
Douglas Thompson42a8e392007-07-19 01:50:10 -0700773
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700774err_out:
775 return err;
776}
777
778/*
779 * edac_device_remove_main_sysfs_attributes
780 * remove any attributes to this instance's main kobject
781 */
782static void edac_device_remove_main_sysfs_attributes(
783 struct edac_device_ctl_info *edac_dev)
784{
785 struct edac_dev_sysfs_attribute *sysfs_attrib;
786
787 /* if there are main attributes, defined, remove them. First,
788 * point to the start of the array and iterate over it
789 * removing each attribute listed from this device's instance's kobject
790 */
791 sysfs_attrib = edac_dev->sysfs_attributes;
792 if (sysfs_attrib) {
793 while (sysfs_attrib->attr.name != NULL) {
794 sysfs_remove_file(&edac_dev->kobj,
795 (struct attribute *) sysfs_attrib);
796 sysfs_attrib++;
797 }
798 }
Douglas Thompson42a8e392007-07-19 01:50:10 -0700799}
800
801/*
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700802 * edac_device_create_sysfs() Constructor
803 *
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700804 * accept a created edac_device control structure
805 * and 'export' it to sysfs. The 'main' kobj should already have been
806 * created. 'instance' and 'block' kobjects should be registered
807 * along with any 'block' attributes from the low driver. In addition,
808 * the main attributes (if any) are connected to the main kobject of
809 * the control structure.
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700810 *
811 * Return:
812 * 0 Success
813 * !0 Failure
814 */
815int edac_device_create_sysfs(struct edac_device_ctl_info *edac_dev)
816{
817 int err;
Douglas Thompson079708b2007-07-19 01:49:58 -0700818 struct kobject *edac_kobj = &edac_dev->kobj;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700819
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700820 debugf0("%s() idx=%d\n", __func__, edac_dev->dev_idx);
821
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700822 /* go create any main attributes callers wants */
823 err = edac_device_add_main_sysfs_attributes(edac_dev);
824 if (err) {
825 debugf0("%s() failed to add sysfs attribs\n", __func__);
826 goto err_out;
Douglas Thompson42a8e392007-07-19 01:50:10 -0700827 }
828
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700829 /* create a symlink from the edac device
830 * to the platform 'device' being used for this
831 */
832 err = sysfs_create_link(edac_kobj,
Douglas Thompson079708b2007-07-19 01:49:58 -0700833 &edac_dev->dev->kobj, EDAC_DEVICE_SYMLINK);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700834 if (err) {
835 debugf0("%s() sysfs_create_link() returned err= %d\n",
836 __func__, err);
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700837 goto err_remove_main_attribs;
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700838 }
839
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700840 /* Create the first level instance directories
841 * In turn, the nested blocks beneath the instances will
842 * be registered as well
843 */
844 err = edac_device_create_instances(edac_dev);
845 if (err) {
846 debugf0("%s() edac_device_create_instances() "
847 "returned err= %d\n", __func__, err);
848 goto err_remove_link;
849 }
850
851
Doug Thompsonb2a4ac02007-07-19 01:50:33 -0700852 debugf4("%s() create-instances done, idx=%d\n",
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700853 __func__, edac_dev->dev_idx);
854
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700855 return 0;
856
857 /* Error unwind stack */
Douglas Thompson42a8e392007-07-19 01:50:10 -0700858err_remove_link:
859 /* remove the sym link */
860 sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700861
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700862err_remove_main_attribs:
863 edac_device_remove_main_sysfs_attributes(edac_dev);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700864
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700865err_out:
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700866 return err;
867}
868
869/*
870 * edac_device_remove_sysfs() destructor
871 *
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700872 * given an edac_device struct, tear down the kobject resources
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700873 */
874void edac_device_remove_sysfs(struct edac_device_ctl_info *edac_dev)
875{
876 debugf0("%s()\n", __func__);
877
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700878 /* remove any main attributes for this device */
879 edac_device_remove_main_sysfs_attributes(edac_dev);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700880
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700881 /* remove the device sym link */
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700882 sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK);
883
Douglas Thompson1c3631f2007-07-19 01:50:29 -0700884 /* walk the instance/block kobject tree, deconstructing it */
885 edac_device_delete_instances(edac_dev);
Douglas Thompsone27e3da2007-07-19 01:49:36 -0700886}