drivers/edac: add device sysfs attributes

Added new controls for the edac_device and edac_mc sysfs folder.
These can be initialized by the low level driver to provide misc
controls into the low level driver for its use

Signed-off-by: Douglas Thompson <dougthompson@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 50 insertions, 2 deletions

diff --git a/drivers/edac/edac_core.h b/drivers/edac/edac_core.h
index b955c58672e2..8c114572b722 100644
--- a/drivers/edac/edac_core.h
+++ b/drivers/edac/edac_core.h
@@ -326,6 +326,18 @@ struct csrow_info {
         struct channel_info *channels;
 };
 
+/* mcidev_sysfs_attribute structure
+ *      used for driver sysfs attributes and in mem_ctl_info
+ *      sysfs top level entries
+ */
+struct mcidev_sysfs_attribute {
+        struct attribute attr;
+        ssize_t (*show)(struct mem_ctl_info *,char *);
+        ssize_t (*store)(struct mem_ctl_info *, const char *,size_t);
+};
+
+/* MEMORY controller information structure
+ */
 struct mem_ctl_info {
         struct list_head link;  /* for global list of mem_ctl_info structs */
         unsigned long mtype_cap;        /* memory types supported by mc */
@@ -353,6 +365,7 @@ struct mem_ctl_info {
          */
         int (*get_sdram_scrub_rate) (struct mem_ctl_info * mci, u32 * bw);
 
+
         /* pointer to edac checking routine */
         void (*edac_check) (struct mem_ctl_info * mci);
 
@@ -394,6 +407,18 @@ struct mem_ctl_info {
         struct kobject edac_mci_kobj;
         struct completion kobj_complete;
 
+        /* Additional top controller level attributes, but specified
+         * by the low level driver.
+         *
+         * Set by the low level driver to provide attributes at the
+         * controller level, same level as 'ue_count' and 'ce_count' above.
+         * An array of structures, NULL terminated
+         *
+         * If attributes are desired, then set to array of attributes
+         * If no attributes are desired, leave NULL
+         */
+        struct mcidev_sysfs_attribute *mc_driver_sysfs_attributes;
+
         /* work struct for this MC */
         struct delayed_work work;
 
@@ -402,7 +427,7 @@ struct mem_ctl_info {
 };
 
 /*
- * The following are the structures to provide for a generice
+ * The following are the structures to provide for a generic
  * or abstract 'edac_device'. This set of structures and the
  * code that implements the APIs for the same, provide for
  * registering EDAC type devices which are NOT standard memory.
@@ -505,6 +530,16 @@ struct edac_device_instance {
         struct completion kobj_complete;
 };
 
+/* edac_dev_sysfs_attribute structure
+ *     used for driver sysfs attributes and in mem_ctl_info
+ *     sysfs top level entries
+ */
+struct edac_dev_sysfs_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);
+};
+
 /*
  * Abstract edac_device control info structure
  *
@@ -522,7 +557,20 @@ struct edac_device_ctl_info {
         unsigned poll_msec;     /* number of milliseconds to poll interval */
         unsigned long delay;    /* number of jiffies for poll_msec */
 
-        struct sysdev_class *edac_class;        /* pointer to class */
+        /* Additional top controller level attributes, but specified
+         * by the low level driver.
+         *
+         * Set by the low level driver to provide attributes at the
+         * controller level, same level as 'ue_count' and 'ce_count' above.
+         * An array of structures, NULL terminated
+         *
+         * If attributes are desired, then set to array of attributes
+         * If no attributes are desired, leave NULL
+         */
+        struct edac_dev_sysfs_attribute *sysfs_attributes;
+
+        /* pointer to main 'edac' class in sysfs */
+        struct sysdev_class *edac_class;
 
         /* the internal state of this controller instance */
         int op_state;