edac: move EDAC device definitions to drivers/edac/edac_device.h

The edac_core.h header contain data structures and function
definitions for both EDAC MC and EDAC device.

Let's move the devices ones to a separate header file, as part
of a header reorganization.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

4 files changed, 281 insertions, 251 deletions

diff --git a/drivers/edac/edac_core.h b/drivers/edac/edac_core.h
index 8c7cca2..3e11d9d 100644
--- a/drivers/edac/edac_core.h
+++ b/drivers/edac/edac_core.h
@@ -36,6 +36,7 @@
 #include <linux/edac.h>
 
 #include "edac_pci.h"
+#include "edac_device.h"
 
 #if PAGE_SHIFT < 20
 #define PAGES_TO_MiB(pages)	((pages) >> (20 - PAGE_SHIFT))
@@ -95,231 +96,6 @@ do {									\
 
 #define to_mci(k) container_of(k, struct mem_ctl_info, dev)
 
-/*
- * 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.
- *
- * CPU caches (L1 and L2)
- * DMA engines
- * Core CPU switches
- * Fabric switch units
- * PCIe interface controllers
- * other EDAC/ECC type devices that can be monitored for
- * errors, etc.
- *
- * It allows for a 2 level set of hierarchy. For example:
- *
- * cache could be composed of L1, L2 and L3 levels of cache.
- * Each CPU core would have its own L1 cache, while sharing
- * L2 and maybe L3 caches.
- *
- * View them arranged, via the sysfs presentation:
- * /sys/devices/system/edac/..
- *
- *	mc/		<existing memory device directory>
- *	cpu/cpu0/..	<L1 and L2 block directory>
- *		/L1-cache/ce_count
- *			 /ue_count
- *		/L2-cache/ce_count
- *			 /ue_count
- *	cpu/cpu1/..	<L1 and L2 block directory>
- *		/L1-cache/ce_count
- *			 /ue_count
- *		/L2-cache/ce_count
- *			 /ue_count
- *	...
- *
- *	the L1 and L2 directories would be "edac_device_block's"
- */
-
-struct edac_device_counter {
-	u32 ue_count;
-	u32 ce_count;
-};
-
-/* forward reference */
-struct edac_device_ctl_info;
-struct edac_device_block;
-
-/* edac_dev_sysfs_attribute structure
- *	used for driver sysfs attributes in mem_ctl_info
- *	for extra controls and attributes:
- *		like high level error Injection controls
- */
-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);
-};
-
-/* edac_dev_sysfs_block_attribute structure
- *
- *	used in leaf 'block' nodes for adding controls/attributes
- *
- *	each block in each instance of the containing control structure
- *	can have an array of the following. The show and store functions
- *	will be filled in with the show/store function in the
- *	low level driver.
- *
- *	The 'value' field will be the actual value field used for
- *	counting
- */
-struct edac_dev_sysfs_block_attribute {
-	struct attribute attr;
-	ssize_t (*show)(struct kobject *, struct attribute *, char *);
-	ssize_t (*store)(struct kobject *, struct attribute *,
-			const char *, size_t);
-	struct edac_device_block *block;
-
-	unsigned int value;
-};
-
-/* device block control structure */
-struct edac_device_block {
-	struct edac_device_instance *instance;	/* Up Pointer */
-	char name[EDAC_DEVICE_NAME_LEN + 1];
-
-	struct edac_device_counter counters;	/* basic UE and CE counters */
-
-	int nr_attribs;		/* how many attributes */
-
-	/* this block's attributes, could be NULL */
-	struct edac_dev_sysfs_block_attribute *block_attributes;
-
-	/* edac sysfs device control */
-	struct kobject kobj;
-};
-
-/* device instance control structure */
-struct edac_device_instance {
-	struct edac_device_ctl_info *ctl;	/* Up pointer */
-	char name[EDAC_DEVICE_NAME_LEN + 4];
-
-	struct edac_device_counter counters;	/* instance counters */
-
-	u32 nr_blocks;		/* how many blocks */
-	struct edac_device_block *blocks;	/* block array */
-
-	/* edac sysfs device control */
-	struct kobject kobj;
-};
-
-
-/*
- * Abstract edac_device control info structure
- *
- */
-struct edac_device_ctl_info {
-	/* for global list of edac_device_ctl_info structs */
-	struct list_head link;
-
-	struct module *owner;	/* Module owner of this control struct */
-
-	int dev_idx;
-
-	/* Per instance controls for this edac_device */
-	int log_ue;		/* boolean for logging UEs */
-	int log_ce;		/* boolean for logging CEs */
-	int panic_on_ue;	/* boolean for panic'ing on an UE */
-	unsigned poll_msec;	/* number of milliseconds to poll interval */
-	unsigned long delay;	/* number of jiffies for poll_msec */
-
-	/* 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' subsys in sysfs */
-	struct bus_type *edac_subsys;
-
-	/* the internal state of this controller instance */
-	int op_state;
-	/* work struct for this instance */
-	struct delayed_work work;
-
-	/* pointer to edac polling checking routine:
-	 *      If NOT NULL: points to polling check routine
-	 *      If NULL: Then assumes INTERRUPT operation, where
-	 *              MC driver will receive events
-	 */
-	void (*edac_check) (struct edac_device_ctl_info * edac_dev);
-
-	struct device *dev;	/* pointer to device structure */
-
-	const char *mod_name;	/* module name */
-	const char *ctl_name;	/* edac controller  name */
-	const char *dev_name;	/* pci/platform/etc... name */
-
-	void *pvt_info;		/* pointer to 'private driver' info */
-
-	unsigned long start_time;	/* edac_device load start time (jiffies) */
-
-	struct completion removal_complete;
-
-	/* sysfs top name under 'edac' directory
-	 * and instance name:
-	 *      cpu/cpu0/...
-	 *      cpu/cpu1/...
-	 *      cpu/cpu2/...
-	 *      ...
-	 */
-	char name[EDAC_DEVICE_NAME_LEN + 1];
-
-	/* Number of instances supported on this control structure
-	 * and the array of those instances
-	 */
-	u32 nr_instances;
-	struct edac_device_instance *instances;
-
-	/* Event counters for the this whole EDAC Device */
-	struct edac_device_counter counters;
-
-	/* edac sysfs device control for the 'name'
-	 * device this structure controls
-	 */
-	struct kobject kobj;
-};
-
-/* To get from the instance's wq to the beginning of the ctl structure */
-#define to_edac_mem_ctl_work(w) \
-		container_of(w, struct mem_ctl_info, work)
-
-#define to_edac_device_ctl_work(w) \
-		container_of(w,struct edac_device_ctl_info,work)
-
-/*
- * The alloc() and free() functions for the 'edac_device' control info
- * structure. A MC driver will allocate one of these for each edac_device
- * it is going to control/register with the EDAC CORE.
- */
-extern struct edac_device_ctl_info *edac_device_alloc_ctl_info(
-		unsigned sizeof_private,
-		char *edac_device_name, unsigned nr_instances,
-		char *edac_block_name, unsigned nr_blocks,
-		unsigned offset_value,
-		struct edac_dev_sysfs_block_attribute *block_attributes,
-		unsigned nr_attribs,
-		int device_index);
-
-/* The offset value can be:
- *	-1 indicating no offset value
- *	0 for zero-based block numbers
- *	1 for 1-based block number
- *	other for other-based block number
- */
-#define	BLOCK_OFFSET_VALUE_OFF	((unsigned) -1)
-
-extern void edac_device_free_ctl_info(struct edac_device_ctl_info *ctl_info);
-
 struct mem_ctl_info *edac_mc_alloc(unsigned mc_num,
 				   unsigned n_layers,
 				   struct edac_mc_layer *layers,
@@ -351,18 +127,6 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type,
 			  const char *other_detail);
 
 /*
- * edac_device APIs
- */
-extern int edac_device_add_device(struct edac_device_ctl_info *edac_dev);
-extern struct edac_device_ctl_info *edac_device_del_device(struct device *dev);
-extern void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev,
-				int inst_nr, int block_nr, const char *msg);
-extern void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
-				int inst_nr, int block_nr, const char *msg);
-extern int edac_device_alloc_index(void);
-extern const char *edac_layer_name[];
-
-/*
  * edac misc APIs
  */
 extern char *edac_op_state_to_string(int op_state);
diff --git a/drivers/edac/edac_device.c b/drivers/edac/edac_device.c
index a979003..046ab77 100644
--- a/drivers/edac/edac_device.c
+++ b/drivers/edac/edac_device.c
@@ -12,23 +12,20 @@
  * 19 Jan 2007
  */
 
+#include <asm/page.h>
+#include <asm/uaccess.h>
+#include <linux/ctype.h>
+#include <linux/highmem.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
 #include <linux/module.h>
-#include <linux/types.h>
+#include <linux/slab.h>
 #include <linux/smp.h>
-#include <linux/init.h>
+#include <linux/spinlock.h>
 #include <linux/sysctl.h>
-#include <linux/highmem.h>
 #include <linux/timer.h>
-#include <linux/slab.h>
-#include <linux/jiffies.h>
-#include <linux/spinlock.h>
-#include <linux/list.h>
-#include <linux/ctype.h>
-#include <linux/workqueue.h>
-#include <asm/uaccess.h>
-#include <asm/page.h>
 
-#include "edac_core.h"
+#include "edac_device.h"
 #include "edac_module.h"
 
 /* lock for the list: 'edac_device_list', manipulation of this list
diff --git a/drivers/edac/edac_device.h b/drivers/edac/edac_device.h
new file mode 100644
index 0000000..eb12044
--- /dev/null
+++ b/drivers/edac/edac_device.h
@@ -0,0 +1,269 @@
+/*
+ * Defines, structures, APIs for edac_device
+ *
+ * (C) 2007 Linux Networx (http://lnxi.com)
+ * This file may be distributed under the terms of the
+ * GNU General Public License.
+ *
+ * Written by Thayne Harbaugh
+ * Based on work by Dan Hollis <goemon at anime dot net> and others.
+ *	http://www.anime.net/~goemon/linux-ecc/
+ *
+ * NMI handling support added by
+ *     Dave Peterson <dsp@llnl.gov> <dave_peterson@pobox.com>
+ *
+ * Refactored for multi-source files:
+ *	Doug Thompson <norsk5@xmission.com>
+ *
+ * Please look at Documentation/driver-api/edac.rst for more info about
+ * EDAC core structs and functions.
+ */
+
+#ifndef _EDAC_DEVICE_H_
+#define _EDAC_DEVICE_H_
+
+#include <linux/completion.h>
+#include <linux/device.h>
+#include <linux/edac.h>
+#include <linux/kobject.h>
+#include <linux/list.h>
+#include <linux/types.h>
+#include <linux/sysfs.h>
+#include <linux/workqueue.h>
+
+
+/*
+ * 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.
+ *
+ * CPU caches (L1 and L2)
+ * DMA engines
+ * Core CPU switches
+ * Fabric switch units
+ * PCIe interface controllers
+ * other EDAC/ECC type devices that can be monitored for
+ * errors, etc.
+ *
+ * It allows for a 2 level set of hierarchy. For example:
+ *
+ * cache could be composed of L1, L2 and L3 levels of cache.
+ * Each CPU core would have its own L1 cache, while sharing
+ * L2 and maybe L3 caches.
+ *
+ * View them arranged, via the sysfs presentation:
+ * /sys/devices/system/edac/..
+ *
+ *	mc/		<existing memory device directory>
+ *	cpu/cpu0/..	<L1 and L2 block directory>
+ *		/L1-cache/ce_count
+ *			 /ue_count
+ *		/L2-cache/ce_count
+ *			 /ue_count
+ *	cpu/cpu1/..	<L1 and L2 block directory>
+ *		/L1-cache/ce_count
+ *			 /ue_count
+ *		/L2-cache/ce_count
+ *			 /ue_count
+ *	...
+ *
+ *	the L1 and L2 directories would be "edac_device_block's"
+ */
+
+struct edac_device_counter {
+	u32 ue_count;
+	u32 ce_count;
+};
+
+/* forward reference */
+struct edac_device_ctl_info;
+struct edac_device_block;
+
+/* edac_dev_sysfs_attribute structure
+ *	used for driver sysfs attributes in mem_ctl_info
+ *	for extra controls and attributes:
+ *		like high level error Injection controls
+ */
+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);
+};
+
+/* edac_dev_sysfs_block_attribute structure
+ *
+ *	used in leaf 'block' nodes for adding controls/attributes
+ *
+ *	each block in each instance of the containing control structure
+ *	can have an array of the following. The show and store functions
+ *	will be filled in with the show/store function in the
+ *	low level driver.
+ *
+ *	The 'value' field will be the actual value field used for
+ *	counting
+ */
+struct edac_dev_sysfs_block_attribute {
+	struct attribute attr;
+	ssize_t (*show)(struct kobject *, struct attribute *, char *);
+	ssize_t (*store)(struct kobject *, struct attribute *,
+			const char *, size_t);
+	struct edac_device_block *block;
+
+	unsigned int value;
+};
+
+/* device block control structure */
+struct edac_device_block {
+	struct edac_device_instance *instance;	/* Up Pointer */
+	char name[EDAC_DEVICE_NAME_LEN + 1];
+
+	struct edac_device_counter counters;	/* basic UE and CE counters */
+
+	int nr_attribs;		/* how many attributes */
+
+	/* this block's attributes, could be NULL */
+	struct edac_dev_sysfs_block_attribute *block_attributes;
+
+	/* edac sysfs device control */
+	struct kobject kobj;
+};
+
+/* device instance control structure */
+struct edac_device_instance {
+	struct edac_device_ctl_info *ctl;	/* Up pointer */
+	char name[EDAC_DEVICE_NAME_LEN + 4];
+
+	struct edac_device_counter counters;	/* instance counters */
+
+	u32 nr_blocks;		/* how many blocks */
+	struct edac_device_block *blocks;	/* block array */
+
+	/* edac sysfs device control */
+	struct kobject kobj;
+};
+
+
+/*
+ * Abstract edac_device control info structure
+ *
+ */
+struct edac_device_ctl_info {
+	/* for global list of edac_device_ctl_info structs */
+	struct list_head link;
+
+	struct module *owner;	/* Module owner of this control struct */
+
+	int dev_idx;
+
+	/* Per instance controls for this edac_device */
+	int log_ue;		/* boolean for logging UEs */
+	int log_ce;		/* boolean for logging CEs */
+	int panic_on_ue;	/* boolean for panic'ing on an UE */
+	unsigned poll_msec;	/* number of milliseconds to poll interval */
+	unsigned long delay;	/* number of jiffies for poll_msec */
+
+	/* 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' subsys in sysfs */
+	struct bus_type *edac_subsys;
+
+	/* the internal state of this controller instance */
+	int op_state;
+	/* work struct for this instance */
+	struct delayed_work work;
+
+	/* pointer to edac polling checking routine:
+	 *      If NOT NULL: points to polling check routine
+	 *      If NULL: Then assumes INTERRUPT operation, where
+	 *              MC driver will receive events
+	 */
+	void (*edac_check) (struct edac_device_ctl_info * edac_dev);
+
+	struct device *dev;	/* pointer to device structure */
+
+	const char *mod_name;	/* module name */
+	const char *ctl_name;	/* edac controller  name */
+	const char *dev_name;	/* pci/platform/etc... name */
+
+	void *pvt_info;		/* pointer to 'private driver' info */
+
+	unsigned long start_time;	/* edac_device load start time (jiffies) */
+
+	struct completion removal_complete;
+
+	/* sysfs top name under 'edac' directory
+	 * and instance name:
+	 *      cpu/cpu0/...
+	 *      cpu/cpu1/...
+	 *      cpu/cpu2/...
+	 *      ...
+	 */
+	char name[EDAC_DEVICE_NAME_LEN + 1];
+
+	/* Number of instances supported on this control structure
+	 * and the array of those instances
+	 */
+	u32 nr_instances;
+	struct edac_device_instance *instances;
+
+	/* Event counters for the this whole EDAC Device */
+	struct edac_device_counter counters;
+
+	/* edac sysfs device control for the 'name'
+	 * device this structure controls
+	 */
+	struct kobject kobj;
+};
+
+/* To get from the instance's wq to the beginning of the ctl structure */
+#define to_edac_mem_ctl_work(w) \
+		container_of(w, struct mem_ctl_info, work)
+
+#define to_edac_device_ctl_work(w) \
+		container_of(w,struct edac_device_ctl_info,work)
+
+/*
+ * The alloc() and free() functions for the 'edac_device' control info
+ * structure. A MC driver will allocate one of these for each edac_device
+ * it is going to control/register with the EDAC CORE.
+ */
+extern struct edac_device_ctl_info *edac_device_alloc_ctl_info(
+		unsigned sizeof_private,
+		char *edac_device_name, unsigned nr_instances,
+		char *edac_block_name, unsigned nr_blocks,
+		unsigned offset_value,
+		struct edac_dev_sysfs_block_attribute *block_attributes,
+		unsigned nr_attribs,
+		int device_index);
+
+/* The offset value can be:
+ *	-1 indicating no offset value
+ *	0 for zero-based block numbers
+ *	1 for 1-based block number
+ *	other for other-based block number
+ */
+#define	BLOCK_OFFSET_VALUE_OFF	((unsigned) -1)
+
+extern void edac_device_free_ctl_info(struct edac_device_ctl_info *ctl_info);
+
+extern int edac_device_add_device(struct edac_device_ctl_info *edac_dev);
+extern struct edac_device_ctl_info *edac_device_del_device(struct device *dev);
+extern void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev,
+				int inst_nr, int block_nr, const char *msg);
+extern void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
+				int inst_nr, int block_nr, const char *msg);
+extern int edac_device_alloc_index(void);
+extern const char *edac_layer_name[];
+
+#endif
diff --git a/drivers/edac/edac_device_sysfs.c b/drivers/edac/edac_device_sysfs.c
index 93da1a4..0e7ea35 100644
--- a/drivers/edac/edac_device_sysfs.c
+++ b/drivers/edac/edac_device_sysfs.c
@@ -1,7 +1,7 @@
 /*
  * file for managing the edac_device subsystem of devices for EDAC
  *
- * (C) 2007 SoftwareBitMaker 
+ * (C) 2007 SoftwareBitMaker
  *
  * This file may be distributed under the terms of the
  * GNU General Public License.
@@ -15,7 +15,7 @@
 #include <linux/slab.h>
 #include <linux/edac.h>
 
-#include "edac_core.h"
+#include "edac_device.h"
 #include "edac_module.h"
 
 #define EDAC_DEVICE_SYMLINK	"device"