diff options
Diffstat (limited to 'drivers/edac')
| -rw-r--r-- | drivers/edac/edac_core.h | 238 | ||||
| -rw-r--r-- | drivers/edac/edac_device.c | 21 | ||||
| -rw-r--r-- | drivers/edac/edac_device.h | 269 | ||||
| -rw-r--r-- | drivers/edac/edac_device_sysfs.c | 4 |
4 files changed, 281 insertions, 251 deletions
diff --git a/drivers/edac/edac_core.h b/drivers/edac/edac_core.h index 8c7cca2d6e40..3e11d9d85462 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 a97900333e2d..046ab7794fc2 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 000000000000..eb1204408529 --- /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 93da1a45c716..0e7ea3591b78 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" |