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gerrit-public.fairphone.software / kernel / msm-4.19 / 27bc344014289a298a9fad4b828fcf61daa60aff / . / include / scsi / scsi_eh.h
blob: 64d30d80dadb5f91ba73f2b020ede8d1e11e7ded [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1#ifndef _SCSI_SCSI_EH_H
2#define _SCSI_SCSI_EH_H
3
James Bottomley645a0c62007-10-15 21:07:17 -0400[diff] [blame]4#include <linux/scatterlist.h>
5
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]6#include <scsi/scsi_cmnd.h>
Sagi Grimberg7708c162015-07-08 17:58:52 +0300[diff] [blame]7#include <scsi/scsi_common.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]8struct scsi_device;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]9struct Scsi_Host;
10
Tejun Heo041c5fc2006-01-23 13:09:36 +0900[diff] [blame]11extern void scsi_eh_finish_cmd(struct scsi_cmnd *scmd,
12 struct list_head *done_q);
13extern void scsi_eh_flush_done_q(struct list_head *done_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]14extern void scsi_report_bus_reset(struct Scsi_Host *, int);
15extern void scsi_report_device_reset(struct Scsi_Host *, int, int);
16extern int scsi_block_when_processing_errors(struct scsi_device *);
Hannes Reinecke4753cbc2014-10-24 14:26:52 +0200[diff] [blame]17extern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd,
18 struct scsi_sense_hdr *sshdr);
Hannes Reinecke3852e372016-04-04 11:44:01 +0200[diff] [blame]19extern int scsi_check_sense(struct scsi_cmnd *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]20
Hannes Reinecke4753cbc2014-10-24 14:26:52 +0200[diff] [blame]21static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]22{
23 return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));
24}
25
Damien Le Moal29087692017-04-24 16:51:12 +0900[diff] [blame]26extern bool scsi_get_sense_info_fld(const u8 *sense_buffer, int sb_len,
27 u64 *info_out);
FUJITA Tomonori3bc6a262008-03-25 09:26:49 +0900[diff] [blame]28
Christoph Hellwig176aa9d2014-10-11 12:06:47 +0200[diff] [blame]29extern int scsi_ioctl_reset(struct scsi_device *, int __user *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]30
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]31struct scsi_eh_save {
Boaz Harrosh30b0c372007-12-13 13:47:40 +0200[diff] [blame]32 /* saved state */
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]33 int result;
Hannes Reinecke8e8c9d02017-04-06 15:36:33 +0200[diff] [blame]34 int eh_eflags;
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]35 enum dma_data_direction data_direction;
Alan Stern12265702008-07-21 10:25:52 -0400[diff] [blame]36 unsigned underflow;
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]37 unsigned char cmd_len;
Martin K. Petersendb007fc2008-07-17 04:28:31 -0400[diff] [blame]38 unsigned char prot_op;
Boaz Harrosh64a87b22008-04-30 11:19:47 +0300[diff] [blame]39 unsigned char *cmnd;
Boaz Harrosh30b0c372007-12-13 13:47:40 +0200[diff] [blame]40 struct scsi_data_buffer sdb;
Boaz Harrosh6f9a35e2007-12-13 13:50:53 +0200[diff] [blame]41 struct request *next_rq;
Boaz Harrosh30b0c372007-12-13 13:47:40 +0200[diff] [blame]42 /* new command support */
Boaz Harrosh64a87b22008-04-30 11:19:47 +0300[diff] [blame]43 unsigned char eh_cmnd[BLK_MAX_CDB];
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]54#endif /* _SCSI_SCSI_EH_H */