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gerrit-public.fairphone.software / kernel / msm-4.9 / bc0d0d093b379b0b379c429e3348498287c8a9ca / . / include / scsi / scsi_eh.h
blob: dbb8c640e26fc4fdb1762816b3c00f425df77c7c [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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]19
Hannes Reinecke4753cbc2014-10-24 14:26:52 +0200[diff] [blame]20static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]21{
22 return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));
23}
24
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]25extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
26 u64 * info_out);
FUJITA Tomonori3bc6a262008-03-25 09:26:49 +0900[diff] [blame]27
Christoph Hellwig176aa9d2014-10-11 12:06:47 +0200[diff] [blame]28extern int scsi_ioctl_reset(struct scsi_device *, int __user *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]29
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]30struct scsi_eh_save {
Boaz Harrosh30b0c372007-12-13 13:47:40 +0200[diff] [blame]31 /* saved state */
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]32 int result;
33 enum dma_data_direction data_direction;
Alan Stern12265702008-07-21 10:25:52 -0400[diff] [blame]34 unsigned underflow;
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]35 unsigned char cmd_len;
Martin K. Petersendb007fc2008-07-17 04:28:31 -0400[diff] [blame]36 unsigned char prot_op;
Boaz Harrosh64a87b22008-04-30 11:19:47 +0300[diff] [blame]37 unsigned char *cmnd;
Boaz Harrosh30b0c372007-12-13 13:47:40 +0200[diff] [blame]38 struct scsi_data_buffer sdb;
Boaz Harrosh6f9a35e2007-12-13 13:50:53 +0200[diff] [blame]39 struct request *next_rq;
Boaz Harrosh30b0c372007-12-13 13:47:40 +0200[diff] [blame]40 /* new command support */
Boaz Harrosh64a87b22008-04-30 11:19:47 +0300[diff] [blame]41 unsigned char eh_cmnd[BLK_MAX_CDB];
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]42 struct scatterlist sense_sgl;
43};
44
45extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd,
46 struct scsi_eh_save *ses, unsigned char *cmnd,
47 int cmnd_size, unsigned sense_bytes);
48
49extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd,
50 struct scsi_eh_save *ses);
51
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]52#endif /* _SCSI_SCSI_EH_H */