516 строки
14 KiB
C
516 строки
14 KiB
C
/*
|
|
* Defines, structures, APIs for edac_core module
|
|
*
|
|
* (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>
|
|
*
|
|
*/
|
|
|
|
#ifndef _EDAC_CORE_H_
|
|
#define _EDAC_CORE_H_
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/module.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/time.h>
|
|
#include <linux/nmi.h>
|
|
#include <linux/rcupdate.h>
|
|
#include <linux/completion.h>
|
|
#include <linux/kobject.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/edac.h>
|
|
|
|
#define EDAC_DEVICE_NAME_LEN 31
|
|
#define EDAC_ATTRIB_VALUE_LEN 15
|
|
|
|
#if PAGE_SHIFT < 20
|
|
#define PAGES_TO_MiB(pages) ((pages) >> (20 - PAGE_SHIFT))
|
|
#define MiB_TO_PAGES(mb) ((mb) << (20 - PAGE_SHIFT))
|
|
#else /* PAGE_SHIFT > 20 */
|
|
#define PAGES_TO_MiB(pages) ((pages) << (PAGE_SHIFT - 20))
|
|
#define MiB_TO_PAGES(mb) ((mb) >> (PAGE_SHIFT - 20))
|
|
#endif
|
|
|
|
#define edac_printk(level, prefix, fmt, arg...) \
|
|
printk(level "EDAC " prefix ": " fmt, ##arg)
|
|
|
|
#define edac_mc_printk(mci, level, fmt, arg...) \
|
|
printk(level "EDAC MC%d: " fmt, mci->mc_idx, ##arg)
|
|
|
|
#define edac_mc_chipset_printk(mci, level, prefix, fmt, arg...) \
|
|
printk(level "EDAC " prefix " MC%d: " fmt, mci->mc_idx, ##arg)
|
|
|
|
#define edac_device_printk(ctl, level, fmt, arg...) \
|
|
printk(level "EDAC DEVICE%d: " fmt, ctl->dev_idx, ##arg)
|
|
|
|
#define edac_pci_printk(ctl, level, fmt, arg...) \
|
|
printk(level "EDAC PCI%d: " fmt, ctl->pci_idx, ##arg)
|
|
|
|
/* prefixes for edac_printk() and edac_mc_printk() */
|
|
#define EDAC_MC "MC"
|
|
#define EDAC_PCI "PCI"
|
|
#define EDAC_DEBUG "DEBUG"
|
|
|
|
extern const char * const edac_mem_types[];
|
|
|
|
#ifdef CONFIG_EDAC_DEBUG
|
|
extern int edac_debug_level;
|
|
|
|
#define edac_dbg(level, fmt, ...) \
|
|
do { \
|
|
if (level <= edac_debug_level) \
|
|
edac_printk(KERN_DEBUG, EDAC_DEBUG, \
|
|
"%s: " fmt, __func__, ##__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#else /* !CONFIG_EDAC_DEBUG */
|
|
|
|
#define edac_dbg(level, fmt, ...) \
|
|
do { \
|
|
if (0) \
|
|
edac_printk(KERN_DEBUG, EDAC_DEBUG, \
|
|
"%s: " fmt, __func__, ##__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#endif /* !CONFIG_EDAC_DEBUG */
|
|
|
|
#define PCI_VEND_DEV(vend, dev) PCI_VENDOR_ID_ ## vend, \
|
|
PCI_DEVICE_ID_ ## vend ## _ ## dev
|
|
|
|
#define edac_dev_name(dev) (dev)->dev_name
|
|
|
|
/*
|
|
* 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);
|
|
|
|
#ifdef CONFIG_PCI
|
|
|
|
struct edac_pci_counter {
|
|
atomic_t pe_count;
|
|
atomic_t npe_count;
|
|
};
|
|
|
|
/*
|
|
* Abstract edac_pci control info structure
|
|
*
|
|
*/
|
|
struct edac_pci_ctl_info {
|
|
/* for global list of edac_pci_ctl_info structs */
|
|
struct list_head link;
|
|
|
|
int pci_idx;
|
|
|
|
struct bus_type *edac_subsys; /* pointer to subsystem */
|
|
|
|
/* 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_pci_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_pci load start time (jiffies) */
|
|
|
|
struct completion complete;
|
|
|
|
/* sysfs top name under 'edac' directory
|
|
* and instance name:
|
|
* cpu/cpu0/...
|
|
* cpu/cpu1/...
|
|
* cpu/cpu2/...
|
|
* ...
|
|
*/
|
|
char name[EDAC_DEVICE_NAME_LEN + 1];
|
|
|
|
/* Event counters for the this whole EDAC Device */
|
|
struct edac_pci_counter counters;
|
|
|
|
/* edac sysfs device control for the 'name'
|
|
* device this structure controls
|
|
*/
|
|
struct kobject kobj;
|
|
struct completion kobj_complete;
|
|
};
|
|
|
|
#define to_edac_pci_ctl_work(w) \
|
|
container_of(w, struct edac_pci_ctl_info,work)
|
|
|
|
/* write all or some bits in a byte-register*/
|
|
static inline void pci_write_bits8(struct pci_dev *pdev, int offset, u8 value,
|
|
u8 mask)
|
|
{
|
|
if (mask != 0xff) {
|
|
u8 buf;
|
|
|
|
pci_read_config_byte(pdev, offset, &buf);
|
|
value &= mask;
|
|
buf &= ~mask;
|
|
value |= buf;
|
|
}
|
|
|
|
pci_write_config_byte(pdev, offset, value);
|
|
}
|
|
|
|
/* write all or some bits in a word-register*/
|
|
static inline void pci_write_bits16(struct pci_dev *pdev, int offset,
|
|
u16 value, u16 mask)
|
|
{
|
|
if (mask != 0xffff) {
|
|
u16 buf;
|
|
|
|
pci_read_config_word(pdev, offset, &buf);
|
|
value &= mask;
|
|
buf &= ~mask;
|
|
value |= buf;
|
|
}
|
|
|
|
pci_write_config_word(pdev, offset, value);
|
|
}
|
|
|
|
/*
|
|
* pci_write_bits32
|
|
*
|
|
* edac local routine to do pci_write_config_dword, but adds
|
|
* a mask parameter. If mask is all ones, ignore the mask.
|
|
* Otherwise utilize the mask to isolate specified bits
|
|
*
|
|
* write all or some bits in a dword-register
|
|
*/
|
|
static inline void pci_write_bits32(struct pci_dev *pdev, int offset,
|
|
u32 value, u32 mask)
|
|
{
|
|
if (mask != 0xffffffff) {
|
|
u32 buf;
|
|
|
|
pci_read_config_dword(pdev, offset, &buf);
|
|
value &= mask;
|
|
buf &= ~mask;
|
|
value |= buf;
|
|
}
|
|
|
|
pci_write_config_dword(pdev, offset, value);
|
|
}
|
|
|
|
#endif /* CONFIG_PCI */
|
|
|
|
struct mem_ctl_info *edac_mc_alloc(unsigned mc_num,
|
|
unsigned n_layers,
|
|
struct edac_mc_layer *layers,
|
|
unsigned sz_pvt);
|
|
extern int edac_mc_add_mc_with_groups(struct mem_ctl_info *mci,
|
|
const struct attribute_group **groups);
|
|
#define edac_mc_add_mc(mci) edac_mc_add_mc_with_groups(mci, NULL)
|
|
extern void edac_mc_free(struct mem_ctl_info *mci);
|
|
extern struct mem_ctl_info *edac_mc_find(int idx);
|
|
extern struct mem_ctl_info *find_mci_by_dev(struct device *dev);
|
|
extern struct mem_ctl_info *edac_mc_del_mc(struct device *dev);
|
|
extern int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci,
|
|
unsigned long page);
|
|
|
|
void edac_raw_mc_handle_error(const enum hw_event_mc_err_type type,
|
|
struct mem_ctl_info *mci,
|
|
struct edac_raw_error_desc *e);
|
|
|
|
void edac_mc_handle_error(const enum hw_event_mc_err_type type,
|
|
struct mem_ctl_info *mci,
|
|
const u16 error_count,
|
|
const unsigned long page_frame_number,
|
|
const unsigned long offset_in_page,
|
|
const unsigned long syndrome,
|
|
const int top_layer,
|
|
const int mid_layer,
|
|
const int low_layer,
|
|
const char *msg,
|
|
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_pci APIs
|
|
*/
|
|
extern struct edac_pci_ctl_info *edac_pci_alloc_ctl_info(unsigned int sz_pvt,
|
|
const char *edac_pci_name);
|
|
|
|
extern void edac_pci_free_ctl_info(struct edac_pci_ctl_info *pci);
|
|
|
|
extern void edac_pci_reset_delay_period(struct edac_pci_ctl_info *pci,
|
|
unsigned long value);
|
|
|
|
extern int edac_pci_alloc_index(void);
|
|
extern int edac_pci_add_device(struct edac_pci_ctl_info *pci, int edac_idx);
|
|
extern struct edac_pci_ctl_info *edac_pci_del_device(struct device *dev);
|
|
|
|
extern struct edac_pci_ctl_info *edac_pci_create_generic_ctl(
|
|
struct device *dev,
|
|
const char *mod_name);
|
|
|
|
extern void edac_pci_release_generic_ctl(struct edac_pci_ctl_info *pci);
|
|
extern int edac_pci_create_sysfs(struct edac_pci_ctl_info *pci);
|
|
extern void edac_pci_remove_sysfs(struct edac_pci_ctl_info *pci);
|
|
|
|
/*
|
|
* edac misc APIs
|
|
*/
|
|
extern char *edac_op_state_to_string(int op_state);
|
|
|
|
#endif /* _EDAC_CORE_H_ */
|