c0e6859eb0
user manual: 1.config: enable MMC_SDHCI_OF_K1X_PANIC 2.config: CONFIG_PSTORE_BLK_BLKDEV,eg:/dev/mmcblk0p7 3.partiton:add pstore partiton test cmd: 1. mount -t pstore pstore /sys/fs/pstore 2. echo c > /proc/sysrq-trigger Change-Id: I88fbe8faedc5ccdffece72e2813e9d173dda9d65 Signed-off-by: lijuan <juan.li@spacemit.com>
82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
|
|
#ifndef __PSTORE_BLK_H_
|
|
#define __PSTORE_BLK_H_
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/pstore.h>
|
|
#include <linux/pstore_zone.h>
|
|
|
|
/**
|
|
* struct pstore_device_info - back-end pstore/blk driver structure.
|
|
*
|
|
* @flags: Refer to macro starting with PSTORE_FLAGS defined in
|
|
* linux/pstore.h. It means what front-ends this device support.
|
|
* Zero means all backends for compatible.
|
|
* @zone: The struct pstore_zone_info details.
|
|
*
|
|
*/
|
|
struct pstore_device_info {
|
|
unsigned int flags;
|
|
struct pstore_zone_info zone;
|
|
};
|
|
|
|
int register_pstore_device(struct pstore_device_info *dev);
|
|
void unregister_pstore_device(struct pstore_device_info *dev);
|
|
|
|
/**
|
|
* struct pstore_blk_config - the pstore_blk backend configuration
|
|
*
|
|
* @device: Name of the desired block device
|
|
* @max_reason: Maximum kmsg dump reason to store to block device
|
|
* @kmsg_size: Total size of for kmsg dumps
|
|
* @pmsg_size: Total size of the pmsg storage area
|
|
* @console_size: Total size of the console storage area
|
|
* @ftrace_size: Total size for ftrace logging data (for all CPUs)
|
|
*/
|
|
struct pstore_blk_config {
|
|
char device[80];
|
|
enum kmsg_dump_reason max_reason;
|
|
unsigned long kmsg_size;
|
|
unsigned long pmsg_size;
|
|
unsigned long console_size;
|
|
unsigned long ftrace_size;
|
|
};
|
|
|
|
#ifdef CONFIG_MMC_SDHCI_OF_K1X_PANIC
|
|
struct bdev_info {
|
|
struct block_device *bdev;
|
|
dev_t devt;
|
|
sector_t nr_sects;
|
|
sector_t start_sect;
|
|
};
|
|
#endif
|
|
/**
|
|
* pstore_blk_get_config - get a copy of the pstore_blk backend configuration
|
|
*
|
|
* @info: The sturct pstore_blk_config to be filled in
|
|
*
|
|
* Failure returns negative error code, and success returns 0.
|
|
*/
|
|
int pstore_blk_get_config(struct pstore_blk_config *info);
|
|
enum pstore_blk_notifier_type {
|
|
PSTORE_BLK_BACKEND_REGISTER = 1,
|
|
PSTORE_BLK_BACKEND_PANIC_DRV_REGISTER,
|
|
PSTORE_BLK_BACKEND_UNREGISTER,
|
|
PSTORE_BLK_BACKEND_PANIC_DRV_UNREGISTER,
|
|
};
|
|
|
|
typedef int (*pstore_blk_notifier_fn_t)(enum pstore_blk_notifier_type type,
|
|
struct pstore_device_info *dev);
|
|
struct pstore_blk_notifier {
|
|
struct notifier_block nb;
|
|
pstore_blk_notifier_fn_t notifier_call;
|
|
};
|
|
|
|
extern int register_pstore_device(struct pstore_device_info *dev);
|
|
extern void unregister_pstore_device(struct pstore_device_info *dev);
|
|
|
|
extern int register_pstore_blk_panic_notifier(struct pstore_blk_notifier *pbn);
|
|
extern void unregister_pstore_blk_panic_notifier(struct pstore_blk_notifier *nb);
|
|
#endif
|