/*
* file for managing the edac_device class of devices for EDAC
*
- * (C) 2007 SoftwareBitMaker(http://www.softwarebitmaker.com)
+ * (C) 2007 SoftwareBitMaker (http://www.softwarebitmaker.com)
+ *
* This file may be distributed under the terms of the
* GNU General Public License.
*
*
*/
-#include <linux/module.h>
-#include <linux/sysdev.h>
#include <linux/ctype.h>
+#include <linux/module.h>
+#include <linux/slab.h>
#include "edac_core.h"
#include "edac_module.h"
-
#define EDAC_DEVICE_SYMLINK "device"
#define to_edacdev(k) container_of(k, struct edac_device_ctl_info, kobj)
#define to_edacdev_attr(a) container_of(a, struct edacdev_attribute, attr)
-#ifdef DKT
-
-static ssize_t edac_dev_ue_count_show(struct edac_device_ctl_info *edac_dev,
- char *data)
-{
- return sprintf(data,"%d\n", edac_dev->ue_count);
-}
-
-static ssize_t edac_dev_ce_count_show(struct edac_device_ctl_info *edac_dev,
- char *data)
-{
- return sprintf(data,"%d\n", edac_dev->ce_count);
-}
-
-static ssize_t edac_dev_seconds_show(struct edac_device_ctl_info *edac_dev,
- char *data)
-{
- return sprintf(data,"%ld\n", (jiffies - edac_dev->start_time) / HZ);
-}
-
-static ssize_t edac_dev_ctl_name_show(struct edac_device_ctl_info *edac_dev,
- char *data)
-{
- return sprintf(data,"%s\n", edac_dev->ctl_name);
-}
-
-
-struct edacdev_attribute {
- struct attribute attr;
- ssize_t (*show)(struct edac_device_ctl_info *,char *);
- ssize_t (*store)(struct edac_device_ctl_info *, const char *,size_t);
-};
-
-
-/* EDAC DEVICE show/store functions for top most object */
-static ssize_t edacdev_show(struct kobject *kobj, struct attribute *attr,
- char *buffer)
-{
- struct edac_device_ctl_info *edac_dev = to_edacdev(kobj);
- struct edacdev_attribute * edacdev_attr = to_edacdev_attr(attr);
-
- if (edacdev_attr->show)
- return edacdev_attr->show(edac_dev, buffer);
-
- return -EIO;
-}
-
-static ssize_t edacdev_store(struct kobject *kobj, struct attribute *attr,
- const char *buffer, size_t count)
-{
- struct edac_device_ctl_info *edac_dev = to_edacdev(kobj);
- struct edacdev_attribute * edacdev_attr = to_edacdev_attr(attr);
-
- if (edacdev_attr->store)
- return edacdev_attr->store(edac_dev, buffer, count);
-
- return -EIO;
-}
-
-static struct sysfs_ops edac_dev_ops = {
- .show = edacdev_show,
- .store = edacdev_store
-};
-
-#define EDACDEV_ATTR(_name,_mode,_show,_store) \
-static struct edacdev_attribute edac_dev_attr_##_name = { \
- .attr = {.name = __stringify(_name), .mode = _mode }, \
- .show = _show, \
- .store = _store, \
-};
-
-/* default Control file */
-EDACDEV_ATTR(reset_counters,S_IWUSR,NULL,edac_dev_reset_counters_store);
-
-/* default Attribute files */
-EDACDEV_ATTR(mc_name,S_IRUGO,edac_dev_ctl_name_show,NULL);
-EDACDEV_ATTR(seconds_since_reset,S_IRUGO,edac_dev_seconds_show,NULL);
-EDACDEV_ATTR(ue_count,S_IRUGO,edac_dev_ue_count_show,NULL);
-EDACDEV_ATTR(ce_count,S_IRUGO,edac_dev_ce_count_show,NULL);
-
-
-static struct edacdev_attribute *edacdev_attr[] = {
- &edacdev_attr_reset_counters,
- &edacdev_attr_mc_name,
- &edacdev_attr_seconds_since_reset,
- &edacdev_attr_ue_count,
- &edacdev_attr_ce_count,
- NULL
-};
-
-/*
- * Release of a Edac Device controlling instance
- */
-static void edac_dev_instance_release(struct kobject *kobj)
-{
- struct edac_device_ctl_info *edac_dev;
-
- edac_dev = to_edacdev(kobj);
- debugf0("%s() idx=%d\n", __func__, edac_dev->dev_idx);
- complete(&edac_dev->kobj_complete);
-}
-
-static struct kobj_type ktype_device = {
- .release = edac_dev_instance_release,
- .sysfs_ops = &edacdev_ops,
- .default_attrs = (struct attribute **) edacdev_attr,
-};
-
-#endif
-
-/************************** edac_device sysfs code and data **************/
/*
* Set of edac_device_ctl_info attribute store/show functions
*/
/* 'log_ue' */
-static ssize_t edac_device_ctl_log_ue_show(
- struct edac_device_ctl_info *ctl_info, char *data)
+static ssize_t edac_device_ctl_log_ue_show(struct edac_device_ctl_info
+ *ctl_info, char *data)
{
- return sprintf(data,"%u\n", ctl_info->log_ue);
+ return sprintf(data, "%u\n", ctl_info->log_ue);
}
-static ssize_t edac_device_ctl_log_ue_store(
- struct edac_device_ctl_info *ctl_info,
- const char *data,size_t count)
+static ssize_t edac_device_ctl_log_ue_store(struct edac_device_ctl_info
+ *ctl_info, const char *data,
+ size_t count)
{
/* if parameter is zero, turn off flag, if non-zero turn on flag */
- ctl_info->log_ue = (simple_strtoul(data,NULL,0) != 0);
+ ctl_info->log_ue = (simple_strtoul(data, NULL, 0) != 0);
- return count;
+ return count;
}
/* 'log_ce' */
-static ssize_t edac_device_ctl_log_ce_show(
- struct edac_device_ctl_info *ctl_info,char *data)
+static ssize_t edac_device_ctl_log_ce_show(struct edac_device_ctl_info
+ *ctl_info, char *data)
{
- return sprintf(data,"%u\n", ctl_info->log_ce);
+ return sprintf(data, "%u\n", ctl_info->log_ce);
}
-static ssize_t edac_device_ctl_log_ce_store(
- struct edac_device_ctl_info *ctl_info,
- const char *data,size_t count)
+static ssize_t edac_device_ctl_log_ce_store(struct edac_device_ctl_info
+ *ctl_info, const char *data,
+ size_t count)
{
/* if parameter is zero, turn off flag, if non-zero turn on flag */
- ctl_info->log_ce = (simple_strtoul(data,NULL,0) != 0);
+ ctl_info->log_ce = (simple_strtoul(data, NULL, 0) != 0);
- return count;
+ return count;
}
-
/* 'panic_on_ue' */
-static ssize_t edac_device_ctl_panic_on_ue_show(
- struct edac_device_ctl_info *ctl_info, char *data)
+static ssize_t edac_device_ctl_panic_on_ue_show(struct edac_device_ctl_info
+ *ctl_info, char *data)
{
- return sprintf(data,"%u\n", ctl_info->panic_on_ue);
+ return sprintf(data, "%u\n", ctl_info->panic_on_ue);
}
-static ssize_t edac_device_ctl_panic_on_ue_store(
- struct edac_device_ctl_info *ctl_info,
- const char *data,size_t count)
+static ssize_t edac_device_ctl_panic_on_ue_store(struct edac_device_ctl_info
+ *ctl_info, const char *data,
+ size_t count)
{
/* if parameter is zero, turn off flag, if non-zero turn on flag */
- ctl_info->panic_on_ue = (simple_strtoul(data,NULL,0) != 0);
+ ctl_info->panic_on_ue = (simple_strtoul(data, NULL, 0) != 0);
return count;
}
/* 'poll_msec' show and store functions*/
-static ssize_t edac_device_ctl_poll_msec_show(
- struct edac_device_ctl_info *ctl_info, char *data)
+static ssize_t edac_device_ctl_poll_msec_show(struct edac_device_ctl_info
+ *ctl_info, char *data)
{
- return sprintf(data,"%u\n", ctl_info->poll_msec);
+ return sprintf(data, "%u\n", ctl_info->poll_msec);
}
-static ssize_t edac_device_ctl_poll_msec_store(
- struct edac_device_ctl_info *ctl_info,
- const char *data,size_t count)
+static ssize_t edac_device_ctl_poll_msec_store(struct edac_device_ctl_info
+ *ctl_info, const char *data,
+ size_t count)
{
unsigned long value;
* Then cancel last outstanding delay for the work request
* and set a new one.
*/
- value = simple_strtoul(data,NULL,0);
- edac_device_reset_delay_period(ctl_info,value);
+ value = simple_strtoul(data, NULL, 0);
+ edac_device_reset_delay_period(ctl_info, value);
- return count;
+ return count;
}
-
/* edac_device_ctl_info specific attribute structure */
struct ctl_info_attribute {
- struct attribute attr;
- ssize_t (*show)(struct edac_device_ctl_info *,char *);
- ssize_t (*store)(struct edac_device_ctl_info *,const char *,size_t);
+ struct attribute attr;
+ ssize_t(*show) (struct edac_device_ctl_info *, char *);
+ ssize_t(*store) (struct edac_device_ctl_info *, const char *, size_t);
};
#define to_ctl_info(k) container_of(k, struct edac_device_ctl_info, kobj)
/* Function to 'show' fields from the edac_dev 'ctl_info' structure */
static ssize_t edac_dev_ctl_info_show(struct kobject *kobj,
- struct attribute *attr,
- char *buffer)
+ struct attribute *attr, char *buffer)
{
- struct edac_device_ctl_info *edac_dev = to_ctl_info(kobj);
- struct ctl_info_attribute *ctl_info_attr = to_ctl_info_attr(attr);
+ struct edac_device_ctl_info *edac_dev = to_ctl_info(kobj);
+ struct ctl_info_attribute *ctl_info_attr = to_ctl_info_attr(attr);
- if (ctl_info_attr->show)
- return ctl_info_attr->show(edac_dev,buffer);
- return -EIO;
+ if (ctl_info_attr->show)
+ return ctl_info_attr->show(edac_dev, buffer);
+ return -EIO;
}
/* Function to 'store' fields into the edac_dev 'ctl_info' structure */
static ssize_t edac_dev_ctl_info_store(struct kobject *kobj,
- struct attribute *attr,
- const char *buffer, size_t count)
+ struct attribute *attr,
+ const char *buffer, size_t count)
{
- struct edac_device_ctl_info *edac_dev = to_ctl_info(kobj);
- struct ctl_info_attribute *ctl_info_attr = to_ctl_info_attr(attr);
+ struct edac_device_ctl_info *edac_dev = to_ctl_info(kobj);
+ struct ctl_info_attribute *ctl_info_attr = to_ctl_info_attr(attr);
- if (ctl_info_attr->store)
- return ctl_info_attr->store(edac_dev, buffer, count);
- return -EIO;
+ if (ctl_info_attr->store)
+ return ctl_info_attr->store(edac_dev, buffer, count);
+ return -EIO;
}
/* edac_dev file operations for an 'ctl_info' */
-static struct sysfs_ops device_ctl_info_ops = {
- .show = edac_dev_ctl_info_show,
- .store = edac_dev_ctl_info_store
+static const struct sysfs_ops device_ctl_info_ops = {
+ .show = edac_dev_ctl_info_show,
+ .store = edac_dev_ctl_info_store
};
#define CTL_INFO_ATTR(_name,_mode,_show,_store) \
static struct ctl_info_attribute attr_ctl_info_##_name = { \
- .attr = {.name = __stringify(_name), .mode = _mode }, \
- .show = _show, \
- .store = _store, \
+ .attr = {.name = __stringify(_name), .mode = _mode }, \
+ .show = _show, \
+ .store = _store, \
};
-
/* Declare the various ctl_info attributes here and their respective ops */
-CTL_INFO_ATTR(log_ue,S_IRUGO|S_IWUSR,
- edac_device_ctl_log_ue_show,
- edac_device_ctl_log_ue_store);
-CTL_INFO_ATTR(log_ce,S_IRUGO|S_IWUSR,
- edac_device_ctl_log_ce_show,
- edac_device_ctl_log_ce_store);
-CTL_INFO_ATTR(panic_on_ue,S_IRUGO|S_IWUSR,
- edac_device_ctl_panic_on_ue_show,
- edac_device_ctl_panic_on_ue_store);
-CTL_INFO_ATTR(poll_msec,S_IRUGO|S_IWUSR,
- edac_device_ctl_poll_msec_show,
- edac_device_ctl_poll_msec_store);
-
+CTL_INFO_ATTR(log_ue, S_IRUGO | S_IWUSR,
+ edac_device_ctl_log_ue_show, edac_device_ctl_log_ue_store);
+CTL_INFO_ATTR(log_ce, S_IRUGO | S_IWUSR,
+ edac_device_ctl_log_ce_show, edac_device_ctl_log_ce_store);
+CTL_INFO_ATTR(panic_on_ue, S_IRUGO | S_IWUSR,
+ edac_device_ctl_panic_on_ue_show,
+ edac_device_ctl_panic_on_ue_store);
+CTL_INFO_ATTR(poll_msec, S_IRUGO | S_IWUSR,
+ edac_device_ctl_poll_msec_show, edac_device_ctl_poll_msec_store);
/* Base Attributes of the EDAC_DEVICE ECC object */
static struct ctl_info_attribute *device_ctrl_attr[] = {
NULL,
};
-/* Main DEVICE kobject release() function */
+/*
+ * edac_device_ctrl_master_release
+ *
+ * called when the reference count for the 'main' kobj
+ * for a edac_device control struct reaches zero
+ *
+ * Reference count model:
+ * One 'main' kobject for each control structure allocated.
+ * That main kobj is initially set to one AND
+ * the reference count for the EDAC 'core' module is
+ * bumped by one, thus added 'keep in memory' dependency.
+ *
+ * Each new internal kobj (in instances and blocks) then
+ * bumps the 'main' kobject.
+ *
+ * When they are released their release functions decrement
+ * the 'main' kobj.
+ *
+ * When the main kobj reaches zero (0) then THIS function
+ * is called which then decrements the EDAC 'core' module.
+ * When the module reference count reaches zero then the
+ * module no longer has dependency on keeping the release
+ * function code in memory and module can be unloaded.
+ *
+ * This will support several control objects as well, each
+ * with its own 'main' kobj.
+ */
static void edac_device_ctrl_master_release(struct kobject *kobj)
{
- struct edac_device_ctl_info *edac_dev;
+ struct edac_device_ctl_info *edac_dev = to_edacdev(kobj);
- edac_dev = to_edacdev(kobj);
+ debugf4("%s() control index=%d\n", __func__, edac_dev->dev_idx);
- debugf1("%s()\n", __func__);
- complete(&edac_dev->kobj_complete);
+ /* decrement the EDAC CORE module ref count */
+ module_put(edac_dev->owner);
+
+ /* free the control struct containing the 'main' kobj
+ * passed in to this routine
+ */
+ kfree(edac_dev);
}
+/* ktype for the main (master) kobject */
static struct kobj_type ktype_device_ctrl = {
.release = edac_device_ctrl_master_release,
.sysfs_ops = &device_ctl_info_ops,
- .default_attrs = (struct attribute **) device_ctrl_attr,
+ .default_attrs = (struct attribute **)device_ctrl_attr,
};
-
-/**************** edac_device main kobj ctor/dtor code *********************/
-
/*
- * edac_device_register_main_kobj
+ * edac_device_register_sysfs_main_kobj
*
* perform the high level setup for the new edac_device instance
*
* Return: 0 SUCCESS
* !0 FAILURE
*/
-static int edac_device_register_main_kobj(
- struct edac_device_ctl_info *edac_dev)
+int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev)
{
- int err = 0;
struct sysdev_class *edac_class;
+ int err;
debugf1("%s()\n", __func__);
- /* get the /sys/devices/system/edac reference */
- edac_class = edac_get_edac_class();
- if (edac_class == NULL) {
- debugf1("%s() no edac_class error=%d\n", __func__, err);
- return err;
- }
+ /* get the /sys/devices/system/edac reference */
+ edac_class = edac_get_edac_class();
+ if (edac_class == NULL) {
+ debugf1("%s() no edac_class error\n", __func__);
+ err = -ENODEV;
+ goto err_out;
+ }
/* Point to the 'edac_class' this instance 'reports' to */
edac_dev->edac_class = edac_class;
/* Init the devices's kobject */
- memset(&edac_dev->kobj, 0, sizeof (struct kobject));
- edac_dev->kobj.ktype = &ktype_device_ctrl;
+ memset(&edac_dev->kobj, 0, sizeof(struct kobject));
- /* set this new device under the edac_class kobject */
- edac_dev->kobj.parent = &edac_class->kset.kobj;
+ /* Record which module 'owns' this control structure
+ * and bump the ref count of the module
+ */
+ edac_dev->owner = THIS_MODULE;
- /* generate sysfs "..../edac/<name>" */
- debugf1("%s() set name of kobject to: %s\n",
- __func__, edac_dev->name);
- err = kobject_set_name(&edac_dev->kobj,"%s",edac_dev->name);
- if (err)
- return err;
- err = kobject_register(&edac_dev->kobj);
+ if (!try_module_get(edac_dev->owner)) {
+ err = -ENODEV;
+ goto err_out;
+ }
+
+ /* register */
+ err = kobject_init_and_add(&edac_dev->kobj, &ktype_device_ctrl,
+ &edac_class->kset.kobj,
+ "%s", edac_dev->name);
if (err) {
debugf1("%s()Failed to register '.../edac/%s'\n",
- __func__,edac_dev->name);
- return err;
+ __func__, edac_dev->name);
+ goto err_kobj_reg;
}
+ kobject_uevent(&edac_dev->kobj, KOBJ_ADD);
+
+ /* At this point, to 'free' the control struct,
+ * edac_device_unregister_sysfs_main_kobj() must be used
+ */
- debugf1("%s() Registered '.../edac/%s' kobject\n",
+ debugf4("%s() Registered '.../edac/%s' kobject\n",
__func__, edac_dev->name);
return 0;
+
+ /* Error exit stack */
+err_kobj_reg:
+ module_put(edac_dev->owner);
+
+err_out:
+ return err;
}
/*
- * edac_device_unregister_main_kobj:
+ * edac_device_unregister_sysfs_main_kobj:
* the '..../edac/<name>' kobject
*/
-static void edac_device_unregister_main_kobj(
- struct edac_device_ctl_info *edac_dev)
+void edac_device_unregister_sysfs_main_kobj(
+ struct edac_device_ctl_info *edac_dev)
{
debugf0("%s()\n", __func__);
- debugf1("%s() name of kobject is: %s\n",
+ debugf4("%s() name of kobject is: %s\n",
__func__, kobject_name(&edac_dev->kobj));
- init_completion(&edac_dev->kobj_complete);
-
/*
* Unregister the edac device's kobject and
- * wait for reference count to reach 0.
+ * allow for reference count to reach 0 at which point
+ * the callback will be called to:
+ * a) module_put() this module
+ * b) 'kfree' the memory
*/
- kobject_unregister(&edac_dev->kobj);
- wait_for_completion(&edac_dev->kobj_complete);
+ kobject_put(&edac_dev->kobj);
}
-
-/*************** edac_dev -> instance information ***********/
+/* edac_dev -> instance information */
/*
* Set of low-level instance attribute show functions
*/
-static ssize_t instance_ue_count_show(
- struct edac_device_instance *instance, char *data)
+static ssize_t instance_ue_count_show(struct edac_device_instance *instance,
+ char *data)
{
- return sprintf(data,"%u\n", instance->counters.ue_count);
+ return sprintf(data, "%u\n", instance->counters.ue_count);
}
-static ssize_t instance_ce_count_show(
- struct edac_device_instance *instance, char *data)
+static ssize_t instance_ce_count_show(struct edac_device_instance *instance,
+ char *data)
{
- return sprintf(data,"%u\n", instance->counters.ce_count);
+ return sprintf(data, "%u\n", instance->counters.ce_count);
}
-
-
#define to_instance(k) container_of(k, struct edac_device_instance, kobj)
#define to_instance_attr(a) container_of(a,struct instance_attribute,attr)
debugf1("%s()\n", __func__);
+ /* map from this kobj to the main control struct
+ * and then dec the main kobj count
+ */
instance = to_instance(kobj);
- complete(&instance->kobj_complete);
+ kobject_put(&instance->ctl->kobj);
}
-
/* instance specific attribute structure */
struct instance_attribute {
- struct attribute attr;
- ssize_t (*show)(struct edac_device_instance *,char *);
- ssize_t (*store)(struct edac_device_instance *,const char *,size_t);
+ struct attribute attr;
+ ssize_t(*show) (struct edac_device_instance *, char *);
+ ssize_t(*store) (struct edac_device_instance *, const char *, size_t);
};
-
/* Function to 'show' fields from the edac_dev 'instance' structure */
static ssize_t edac_dev_instance_show(struct kobject *kobj,
- struct attribute *attr,
- char *buffer)
+ struct attribute *attr, char *buffer)
{
- struct edac_device_instance *instance = to_instance(kobj);
- struct instance_attribute *instance_attr = to_instance_attr(attr);
+ struct edac_device_instance *instance = to_instance(kobj);
+ struct instance_attribute *instance_attr = to_instance_attr(attr);
- if (instance_attr->show)
- return instance_attr->show(instance,buffer);
- return -EIO;
+ if (instance_attr->show)
+ return instance_attr->show(instance, buffer);
+ return -EIO;
}
-
/* Function to 'store' fields into the edac_dev 'instance' structure */
static ssize_t edac_dev_instance_store(struct kobject *kobj,
- struct attribute *attr,
- const char *buffer, size_t count)
+ struct attribute *attr,
+ const char *buffer, size_t count)
{
- struct edac_device_instance *instance = to_instance(kobj);
- struct instance_attribute *instance_attr = to_instance_attr(attr);
+ struct edac_device_instance *instance = to_instance(kobj);
+ struct instance_attribute *instance_attr = to_instance_attr(attr);
- if (instance_attr->store)
- return instance_attr->store(instance, buffer, count);
- return -EIO;
+ if (instance_attr->store)
+ return instance_attr->store(instance, buffer, count);
+ return -EIO;
}
-
-
/* edac_dev file operations for an 'instance' */
-static struct sysfs_ops device_instance_ops = {
- .show = edac_dev_instance_show,
- .store = edac_dev_instance_store
+static const struct sysfs_ops device_instance_ops = {
+ .show = edac_dev_instance_show,
+ .store = edac_dev_instance_store
};
#define INSTANCE_ATTR(_name,_mode,_show,_store) \
static struct instance_attribute attr_instance_##_name = { \
- .attr = {.name = __stringify(_name), .mode = _mode }, \
- .show = _show, \
- .store = _store, \
+ .attr = {.name = __stringify(_name), .mode = _mode }, \
+ .show = _show, \
+ .store = _store, \
};
/*
* Each contains a pointer to a show and an optional set
* function pointer that does the low level output/input
*/
-INSTANCE_ATTR(ce_count,S_IRUGO,instance_ce_count_show,NULL);
-INSTANCE_ATTR(ue_count,S_IRUGO,instance_ue_count_show,NULL);
+INSTANCE_ATTR(ce_count, S_IRUGO, instance_ce_count_show, NULL);
+INSTANCE_ATTR(ue_count, S_IRUGO, instance_ue_count_show, NULL);
/* list of edac_dev 'instance' attributes */
static struct instance_attribute *device_instance_attr[] = {
static struct kobj_type ktype_instance_ctrl = {
.release = edac_device_ctrl_instance_release,
.sysfs_ops = &device_instance_ops,
- .default_attrs = (struct attribute **) device_instance_attr,
+ .default_attrs = (struct attribute **)device_instance_attr,
};
+/* edac_dev -> instance -> block information */
-/*************** edac_dev -> instance -> block information *********/
+#define to_block(k) container_of(k, struct edac_device_block, kobj)
+#define to_block_attr(a) \
+ container_of(a, struct edac_dev_sysfs_block_attribute, attr)
/*
* Set of low-level block attribute show functions
*/
-static ssize_t block_ue_count_show(
- struct edac_device_block *block, char *data)
+static ssize_t block_ue_count_show(struct kobject *kobj,
+ struct attribute *attr, char *data)
{
- return sprintf(data,"%u\n", block->counters.ue_count);
-}
+ struct edac_device_block *block = to_block(kobj);
-static ssize_t block_ce_count_show(
- struct edac_device_block *block, char *data)
-{
- return sprintf(data,"%u\n", block->counters.ce_count);
+ return sprintf(data, "%u\n", block->counters.ue_count);
}
+static ssize_t block_ce_count_show(struct kobject *kobj,
+ struct attribute *attr, char *data)
+{
+ struct edac_device_block *block = to_block(kobj);
-
-#define to_block(k) container_of(k, struct edac_device_block, kobj)
-#define to_block_attr(a) container_of(a,struct block_attribute,attr)
+ return sprintf(data, "%u\n", block->counters.ce_count);
+}
/* DEVICE block kobject release() function */
static void edac_device_ctrl_block_release(struct kobject *kobj)
debugf1("%s()\n", __func__);
+ /* get the container of the kobj */
block = to_block(kobj);
- complete(&block->kobj_complete);
+
+ /* map from 'block kobj' to 'block->instance->controller->main_kobj'
+ * now 'release' the block kobject
+ */
+ kobject_put(&block->instance->ctl->kobj);
}
-/* block specific attribute structure */
-struct block_attribute {
- struct attribute attr;
- ssize_t (*show)(struct edac_device_block *,char *);
- ssize_t (*store)(struct edac_device_block *,const char *,size_t);
-};
/* Function to 'show' fields from the edac_dev 'block' structure */
static ssize_t edac_dev_block_show(struct kobject *kobj,
- struct attribute *attr,
- char *buffer)
+ struct attribute *attr, char *buffer)
{
- struct edac_device_block *block = to_block(kobj);
- struct block_attribute *block_attr = to_block_attr(attr);
+ struct edac_dev_sysfs_block_attribute *block_attr =
+ to_block_attr(attr);
- if (block_attr->show)
- return block_attr->show(block,buffer);
- return -EIO;
+ if (block_attr->show)
+ return block_attr->show(kobj, attr, buffer);
+ return -EIO;
}
-
/* Function to 'store' fields into the edac_dev 'block' structure */
static ssize_t edac_dev_block_store(struct kobject *kobj,
- struct attribute *attr,
- const char *buffer, size_t count)
+ struct attribute *attr,
+ const char *buffer, size_t count)
{
- struct edac_device_block *block = to_block(kobj);
- struct block_attribute *block_attr = to_block_attr(attr);
+ struct edac_dev_sysfs_block_attribute *block_attr;
- if (block_attr->store)
- return block_attr->store(block, buffer, count);
- return -EIO;
-}
+ block_attr = to_block_attr(attr);
+ if (block_attr->store)
+ return block_attr->store(kobj, attr, buffer, count);
+ return -EIO;
+}
/* edac_dev file operations for a 'block' */
-static struct sysfs_ops device_block_ops = {
- .show = edac_dev_block_show,
- .store = edac_dev_block_store
+static const struct sysfs_ops device_block_ops = {
+ .show = edac_dev_block_show,
+ .store = edac_dev_block_store
};
-
#define BLOCK_ATTR(_name,_mode,_show,_store) \
-static struct block_attribute attr_block_##_name = { \
- .attr = {.name = __stringify(_name), .mode = _mode }, \
- .show = _show, \
- .store = _store, \
+static struct edac_dev_sysfs_block_attribute attr_block_##_name = { \
+ .attr = {.name = __stringify(_name), .mode = _mode }, \
+ .show = _show, \
+ .store = _store, \
};
-BLOCK_ATTR(ce_count,S_IRUGO,block_ce_count_show,NULL);
-BLOCK_ATTR(ue_count,S_IRUGO,block_ue_count_show,NULL);
-
+BLOCK_ATTR(ce_count, S_IRUGO, block_ce_count_show, NULL);
+BLOCK_ATTR(ue_count, S_IRUGO, block_ue_count_show, NULL);
/* list of edac_dev 'block' attributes */
-static struct block_attribute *device_block_attr[] = {
+static struct edac_dev_sysfs_block_attribute *device_block_attr[] = {
&attr_block_ce_count,
&attr_block_ue_count,
NULL,
static struct kobj_type ktype_block_ctrl = {
.release = edac_device_ctrl_block_release,
.sysfs_ops = &device_block_ops,
- .default_attrs = (struct attribute **) device_block_attr,
+ .default_attrs = (struct attribute **)device_block_attr,
};
-
-/************** block ctor/dtor code ************/
+/* block ctor/dtor code */
/*
* edac_device_create_block
*/
-static int edac_device_create_block(
- struct edac_device_ctl_info *edac_dev,
- struct edac_device_instance *instance,
- int idx)
+static int edac_device_create_block(struct edac_device_ctl_info *edac_dev,
+ struct edac_device_instance *instance,
+ struct edac_device_block *block)
{
+ int i;
int err;
- struct edac_device_block *block;
-
- block = &instance->blocks[idx];
+ struct edac_dev_sysfs_block_attribute *sysfs_attrib;
+ struct kobject *main_kobj;
- debugf1("%s() Instance '%s' block[%d] '%s'\n",
- __func__,instance->name, idx, block->name);
+ debugf4("%s() Instance '%s' inst_p=%p block '%s' block_p=%p\n",
+ __func__, instance->name, instance, block->name, block);
+ debugf4("%s() block kobj=%p block kobj->parent=%p\n",
+ __func__, &block->kobj, &block->kobj.parent);
/* init this block's kobject */
- memset(&block->kobj, 0, sizeof (struct kobject));
- block->kobj.parent = &instance->kobj;
- block->kobj.ktype = &ktype_block_ctrl;
+ memset(&block->kobj, 0, sizeof(struct kobject));
- err = kobject_set_name(&block->kobj,"%s",block->name);
- if (err)
- return err;
+ /* bump the main kobject's reference count for this controller
+ * and this instance is dependant on the main
+ */
+ main_kobj = kobject_get(&edac_dev->kobj);
+ if (!main_kobj) {
+ err = -ENODEV;
+ goto err_out;
+ }
- err = kobject_register(&block->kobj);
+ /* Add this block's kobject */
+ err = kobject_init_and_add(&block->kobj, &ktype_block_ctrl,
+ &instance->kobj,
+ "%s", block->name);
if (err) {
- debugf1("%s()Failed to register instance '%s'\n",
- __func__,block->name);
- return err;
+ debugf1("%s() Failed to register instance '%s'\n",
+ __func__, block->name);
+ kobject_put(main_kobj);
+ err = -ENODEV;
+ goto err_out;
+ }
+
+ /* If there are driver level block attributes, then added them
+ * to the block kobject
+ */
+ sysfs_attrib = block->block_attributes;
+ if (sysfs_attrib && block->nr_attribs) {
+ for (i = 0; i < block->nr_attribs; i++, sysfs_attrib++) {
+
+ debugf4("%s() creating block attrib='%s' "
+ "attrib->%p to kobj=%p\n",
+ __func__,
+ sysfs_attrib->attr.name,
+ sysfs_attrib, &block->kobj);
+
+ /* Create each block_attribute file */
+ err = sysfs_create_file(&block->kobj,
+ &sysfs_attrib->attr);
+ if (err)
+ goto err_on_attrib;
+ }
}
+ kobject_uevent(&block->kobj, KOBJ_ADD);
return 0;
+
+ /* Error unwind stack */
+err_on_attrib:
+ kobject_put(&block->kobj);
+
+err_out:
+ return err;
}
/*
- * edac_device_delete_block(edac_dev,j);
+ * edac_device_delete_block(edac_dev,block);
*/
-static void edac_device_delete_block(
- struct edac_device_ctl_info *edac_dev,
- struct edac_device_instance *instance,
- int idx)
+static void edac_device_delete_block(struct edac_device_ctl_info *edac_dev,
+ struct edac_device_block *block)
{
- struct edac_device_block *block;
+ struct edac_dev_sysfs_block_attribute *sysfs_attrib;
+ int i;
- block = &instance->blocks[idx];
+ /* if this block has 'attributes' then we need to iterate over the list
+ * and 'remove' the attributes on this block
+ */
+ sysfs_attrib = block->block_attributes;
+ if (sysfs_attrib && block->nr_attribs) {
+ for (i = 0; i < block->nr_attribs; i++, sysfs_attrib++) {
+
+ /* remove each block_attrib file */
+ sysfs_remove_file(&block->kobj,
+ (struct attribute *) sysfs_attrib);
+ }
+ }
- /* unregister this block's kobject */
- init_completion(&block->kobj_complete);
- kobject_unregister(&block->kobj);
- wait_for_completion(&block->kobj_complete);
+ /* unregister this block's kobject, SEE:
+ * edac_device_ctrl_block_release() callback operation
+ */
+ kobject_put(&block->kobj);
}
-/************** instance ctor/dtor code ************/
+/* instance ctor/dtor code */
/*
* edac_device_create_instance
* create just one instance of an edac_device 'instance'
*/
-static int edac_device_create_instance(
- struct edac_device_ctl_info *edac_dev, int idx)
+static int edac_device_create_instance(struct edac_device_ctl_info *edac_dev,
+ int idx)
{
int i, j;
int err;
struct edac_device_instance *instance;
+ struct kobject *main_kobj;
instance = &edac_dev->instances[idx];
/* Init the instance's kobject */
- memset(&instance->kobj, 0, sizeof (struct kobject));
+ memset(&instance->kobj, 0, sizeof(struct kobject));
- /* set this new device under the edac_device main kobject */
- instance->kobj.parent = &edac_dev->kobj;
- instance->kobj.ktype = &ktype_instance_ctrl;
+ instance->ctl = edac_dev;
- err = kobject_set_name(&instance->kobj,"%s",instance->name);
- if (err)
- return err;
+ /* bump the main kobject's reference count for this controller
+ * and this instance is dependant on the main
+ */
+ main_kobj = kobject_get(&edac_dev->kobj);
+ if (!main_kobj) {
+ err = -ENODEV;
+ goto err_out;
+ }
- err = kobject_register(&instance->kobj);
+ /* Formally register this instance's kobject under the edac_device */
+ err = kobject_init_and_add(&instance->kobj, &ktype_instance_ctrl,
+ &edac_dev->kobj, "%s", instance->name);
if (err != 0) {
debugf2("%s() Failed to register instance '%s'\n",
- __func__,instance->name);
- return err;
+ __func__, instance->name);
+ kobject_put(main_kobj);
+ goto err_out;
}
- debugf1("%s() now register '%d' blocks for instance %d\n",
- __func__,instance->nr_blocks,idx);
+ debugf4("%s() now register '%d' blocks for instance %d\n",
+ __func__, instance->nr_blocks, idx);
/* register all blocks of this instance */
- for (i = 0; i < instance->nr_blocks; i++ ) {
- err = edac_device_create_block(edac_dev,instance,i);
+ for (i = 0; i < instance->nr_blocks; i++) {
+ err = edac_device_create_block(edac_dev, instance,
+ &instance->blocks[i]);
if (err) {
- for (j = 0; j < i; j++) {
- edac_device_delete_block(edac_dev,instance,j);
- }
- return err;
+ /* If any fail, remove all previous ones */
+ for (j = 0; j < i; j++)
+ edac_device_delete_block(edac_dev,
+ &instance->blocks[j]);
+ goto err_release_instance_kobj;
}
}
+ kobject_uevent(&instance->kobj, KOBJ_ADD);
- debugf1("%s() Registered instance %d '%s' kobject\n",
+ debugf4("%s() Registered instance %d '%s' kobject\n",
__func__, idx, instance->name);
return 0;
+
+ /* error unwind stack */
+err_release_instance_kobj:
+ kobject_put(&instance->kobj);
+
+err_out:
+ return err;
}
/*
* edac_device_remove_instance
* remove an edac_device instance
*/
-static void edac_device_delete_instance(
- struct edac_device_ctl_info *edac_dev, int idx)
+static void edac_device_delete_instance(struct edac_device_ctl_info *edac_dev,
+ int idx)
{
- int i;
struct edac_device_instance *instance;
+ int i;
instance = &edac_dev->instances[idx];
/* unregister all blocks in this instance */
- for (i = 0; i < instance->nr_blocks; i++) {
- edac_device_delete_block(edac_dev,instance,i);
- }
+ for (i = 0; i < instance->nr_blocks; i++)
+ edac_device_delete_block(edac_dev, &instance->blocks[i]);
- /* unregister this instance's kobject */
- init_completion(&instance->kobj_complete);
- kobject_unregister(&instance->kobj);
- wait_for_completion(&instance->kobj_complete);
+ /* unregister this instance's kobject, SEE:
+ * edac_device_ctrl_instance_release() for callback operation
+ */
+ kobject_put(&instance->kobj);
}
/*
debugf0("%s()\n", __func__);
/* iterate over creation of the instances */
- for (i = 0; i < edac_dev->nr_instances; i++ ) {
- err = edac_device_create_instance(edac_dev,i);
+ for (i = 0; i < edac_dev->nr_instances; i++) {
+ err = edac_device_create_instance(edac_dev, i);
if (err) {
/* unwind previous instances on error */
- for (j = 0; j < i; j++) {
- edac_device_delete_instance(edac_dev,j);
- }
+ for (j = 0; j < i; j++)
+ edac_device_delete_instance(edac_dev, j);
return err;
}
}
int i;
/* iterate over creation of the instances */
- for (i = 0; i < edac_dev->nr_instances; i++ ) {
- edac_device_delete_instance(edac_dev,i);
+ for (i = 0; i < edac_dev->nr_instances; i++)
+ edac_device_delete_instance(edac_dev, i);
+}
+
+/* edac_dev sysfs ctor/dtor code */
+
+/*
+ * edac_device_add_main_sysfs_attributes
+ * add some attributes to this instance's main kobject
+ */
+static int edac_device_add_main_sysfs_attributes(
+ struct edac_device_ctl_info *edac_dev)
+{
+ struct edac_dev_sysfs_attribute *sysfs_attrib;
+ int err = 0;
+
+ sysfs_attrib = edac_dev->sysfs_attributes;
+ if (sysfs_attrib) {
+ /* iterate over the array and create an attribute for each
+ * entry in the list
+ */
+ while (sysfs_attrib->attr.name != NULL) {
+ err = sysfs_create_file(&edac_dev->kobj,
+ (struct attribute*) sysfs_attrib);
+ if (err)
+ goto err_out;
+
+ sysfs_attrib++;
+ }
}
+
+err_out:
+ return err;
}
-/******************* edac_dev sysfs ctor/dtor code *************/
+/*
+ * edac_device_remove_main_sysfs_attributes
+ * remove any attributes to this instance's main kobject
+ */
+static void edac_device_remove_main_sysfs_attributes(
+ struct edac_device_ctl_info *edac_dev)
+{
+ struct edac_dev_sysfs_attribute *sysfs_attrib;
+
+ /* if there are main attributes, defined, remove them. First,
+ * point to the start of the array and iterate over it
+ * removing each attribute listed from this device's instance's kobject
+ */
+ sysfs_attrib = edac_dev->sysfs_attributes;
+ if (sysfs_attrib) {
+ while (sysfs_attrib->attr.name != NULL) {
+ sysfs_remove_file(&edac_dev->kobj,
+ (struct attribute *) sysfs_attrib);
+ sysfs_attrib++;
+ }
+ }
+}
/*
* edac_device_create_sysfs() Constructor
*
- * Create a new edac_device kobject instance,
+ * accept a created edac_device control structure
+ * and 'export' it to sysfs. The 'main' kobj should already have been
+ * created. 'instance' and 'block' kobjects should be registered
+ * along with any 'block' attributes from the low driver. In addition,
+ * the main attributes (if any) are connected to the main kobject of
+ * the control structure.
*
* Return:
* 0 Success
int edac_device_create_sysfs(struct edac_device_ctl_info *edac_dev)
{
int err;
- struct kobject *edac_kobj=&edac_dev->kobj;
-
- /* register this instance's main kobj with the edac class kobj */
- err = edac_device_register_main_kobj(edac_dev);
- if (err)
- return err;
+ struct kobject *edac_kobj = &edac_dev->kobj;
debugf0("%s() idx=%d\n", __func__, edac_dev->dev_idx);
+ /* go create any main attributes callers wants */
+ err = edac_device_add_main_sysfs_attributes(edac_dev);
+ if (err) {
+ debugf0("%s() failed to add sysfs attribs\n", __func__);
+ goto err_out;
+ }
+
/* create a symlink from the edac device
* to the platform 'device' being used for this
*/
err = sysfs_create_link(edac_kobj,
- &edac_dev->dev->kobj,
- EDAC_DEVICE_SYMLINK);
+ &edac_dev->dev->kobj, EDAC_DEVICE_SYMLINK);
if (err) {
debugf0("%s() sysfs_create_link() returned err= %d\n",
__func__, err);
- return err;
+ goto err_remove_main_attribs;
}
- debugf0("%s() calling create-instances, idx=%d\n",
- __func__, edac_dev->dev_idx);
-
- /* Create the first level instance directories */
+ /* Create the first level instance directories
+ * In turn, the nested blocks beneath the instances will
+ * be registered as well
+ */
err = edac_device_create_instances(edac_dev);
if (err) {
- goto error0;
+ debugf0("%s() edac_device_create_instances() "
+ "returned err= %d\n", __func__, err);
+ goto err_remove_link;
}
+
+ debugf4("%s() create-instances done, idx=%d\n",
+ __func__, edac_dev->dev_idx);
+
return 0;
/* Error unwind stack */
+err_remove_link:
+ /* remove the sym link */
+ sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK);
-error0:
- edac_device_unregister_main_kobj(edac_dev);
+err_remove_main_attribs:
+ edac_device_remove_main_sysfs_attributes(edac_dev);
+err_out:
return err;
}
/*
* edac_device_remove_sysfs() destructor
*
- * remove a edac_device instance
+ * given an edac_device struct, tear down the kobject resources
*/
void edac_device_remove_sysfs(struct edac_device_ctl_info *edac_dev)
{
debugf0("%s()\n", __func__);
- edac_device_delete_instances(edac_dev);
+ /* remove any main attributes for this device */
+ edac_device_remove_main_sysfs_attributes(edac_dev);
- /* remove the sym link */
+ /* remove the device sym link */
sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK);
- /* unregister the instance's main kobj */
- edac_device_unregister_main_kobj(edac_dev);
+ /* walk the instance/block kobject tree, deconstructing it */
+ edac_device_delete_instances(edac_dev);
}
-
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff