[mirror_ubuntu-bionic-kernel.git] / include / scsi / scsi_eh.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _SCSI_SCSI_EH_H
#define _SCSI_SCSI_EH_H

#include <linux/scatterlist.h>

#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_common.h>
struct scsi_device;
struct Scsi_Host;

extern void scsi_eh_finish_cmd(struct scsi_cmnd *scmd,
			       struct list_head *done_q);
extern void scsi_eh_flush_done_q(struct list_head *done_q);
extern void scsi_report_bus_reset(struct Scsi_Host *, int);
extern void scsi_report_device_reset(struct Scsi_Host *, int, int);
extern int scsi_block_when_processing_errors(struct scsi_device *);
extern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd,
					 struct scsi_sense_hdr *sshdr);
extern int scsi_check_sense(struct scsi_cmnd *);

static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr)
{
	return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));
}

extern bool scsi_get_sense_info_fld(const u8 *sense_buffer, int sb_len,
				    u64 *info_out);

extern int scsi_ioctl_reset(struct scsi_device *, int __user *);

struct scsi_eh_save {
	/* saved state */
	int result;
	unsigned int resid_len;
	int eh_eflags;
	enum dma_data_direction data_direction;
	unsigned underflow;
	unsigned char cmd_len;
	unsigned char prot_op;
	unsigned char *cmnd;
	struct scsi_data_buffer sdb;
	struct request *next_rq;
	/* new command support */
	unsigned char eh_cmnd[BLK_MAX_CDB];
	struct scatterlist sense_sgl;
};

extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd,
		struct scsi_eh_save *ses, unsigned char *cmnd,
		int cmnd_size, unsigned sense_bytes);

extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd,
		struct scsi_eh_save *ses);

#endif /* _SCSI_SCSI_EH_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef _SCSI_SCSI_EH_H
	3	#define _SCSI_SCSI_EH_H
	4
645a0c6c JB	5	#include <linux/scatterlist.h>
645a0c6c JB	6
e1c23468	7	#include <scsi/scsi_cmnd.h>
7708c165	8	#include <scsi/scsi_common.h>
1da177e4	9	struct scsi_device;
1da177e4 LT	10	struct Scsi_Host;
1da177e4 LT	11
041c5fc3 TH	12	extern void scsi_eh_finish_cmd(struct scsi_cmnd *scmd,
	13	struct list_head *done_q);
	14	extern void scsi_eh_flush_done_q(struct list_head *done_q);
1da177e4 LT	15	extern void scsi_report_bus_reset(struct Scsi_Host *, int);
	16	extern void scsi_report_device_reset(struct Scsi_Host *, int, int);
	17	extern int scsi_block_when_processing_errors(struct scsi_device *);
4753cbc0 HR	18	extern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd,
4753cbc0 HR	19	struct scsi_sense_hdr *sshdr);
3852e373	20	extern int scsi_check_sense(struct scsi_cmnd *);
1da177e4	21
4753cbc0	22	static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr)
1da177e4 LT	23	{
	24	return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));
	25	}
	26
2908769c DLM	27	extern bool scsi_get_sense_info_fld(const u8 *sense_buffer, int sb_len,
2908769c DLM	28	u64 *info_out);
3bc6a261	29
176aa9d6	30	extern int scsi_ioctl_reset(struct scsi_device , int __user );
1da177e4	31
e1c23468	32	struct scsi_eh_save {
30b0c37b	33	/* saved state */
e1c23468	34	int result;
15902810	35	unsigned int resid_len;
8e8c9d01	36	int eh_eflags;
e1c23468	37	enum dma_data_direction data_direction;
12265709	38	unsigned underflow;
e1c23468	39	unsigned char cmd_len;
db007fc5	40	unsigned char prot_op;
64a87b24	41	unsigned char *cmnd;
30b0c37b	42	struct scsi_data_buffer sdb;
6f9a35e2	43	struct request *next_rq;
30b0c37b	44	/* new command support */
64a87b24	45	unsigned char eh_cmnd[BLK_MAX_CDB];
e1c23468 BH	46	struct scatterlist sense_sgl;
	47	};
	48
	49	extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd,
	50	struct scsi_eh_save ses, unsigned char cmnd,
	51	int cmnd_size, unsigned sense_bytes);
	52
	53	extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd,
	54	struct scsi_eh_save *ses);
	55
1da177e4	56	#endif /* _SCSI_SCSI_EH_H */