1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _SCSI_SCSI_EH_H
3#define _SCSI_SCSI_EH_H
4
5#include <linux/scatterlist.h>
6
7#include <scsi/scsi_cmnd.h>
8#include <scsi/scsi_common.h>
9struct scsi_device;
10struct Scsi_Host;
11
12extern void scsi_eh_finish_cmd(struct scsi_cmnd *scmd,
13 struct list_head *done_q);
14extern void scsi_eh_flush_done_q(struct list_head *done_q);
15extern void scsi_report_bus_reset(struct Scsi_Host *, int);
16extern void scsi_report_device_reset(struct Scsi_Host *, int, int);
17extern int scsi_block_when_processing_errors(struct scsi_device *);
18extern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd,
19 struct scsi_sense_hdr *sshdr);
20extern int scsi_check_sense(struct scsi_cmnd *);
21
22static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr)
23{
24 return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));
25}
26
27extern bool scsi_get_sense_info_fld(const u8 *sense_buffer, int sb_len,
28 u64 *info_out);
29
30extern int scsi_ioctl_reset(struct scsi_device *, int __user *);
31
32struct scsi_eh_save {
33 /* saved state */
34 int result;
35 int eh_eflags;
36 enum dma_data_direction data_direction;
37 unsigned underflow;
38 unsigned char cmd_len;
39 unsigned char prot_op;
40 unsigned char *cmnd;
41 struct scsi_data_buffer sdb;
42 /* new command support */
43 unsigned char eh_cmnd[BLK_MAX_CDB];
44 struct scatterlist sense_sgl;
45};
46
47extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd,
48 struct scsi_eh_save *ses, unsigned char *cmnd,
49 int cmnd_size, unsigned sense_bytes);
50
51extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd,
52 struct scsi_eh_save *ses);
53
54#endif /* _SCSI_SCSI_EH_H */
55