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gerrit-public.fairphone.software / kernel / msm-4.19 / 5c3950970b91df6a15db66ec4498bac9b12f4002 / . / include / scsi / scsi_eh.h
blob: 4942710ef720ea5716e8cc6ebf0df941e22500ba [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>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]7struct scsi_device;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]8struct Scsi_Host;
9
Tejun Heo041c5fc2006-01-23 13:09:36 +0900[diff] [blame]10extern void scsi_eh_finish_cmd(struct scsi_cmnd *scmd,
11 struct list_head *done_q);
12extern void scsi_eh_flush_done_q(struct list_head *done_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]13extern void scsi_report_bus_reset(struct Scsi_Host *, int);
14extern void scsi_report_device_reset(struct Scsi_Host *, int, int);
15extern int scsi_block_when_processing_errors(struct scsi_device *);
Hannes Reinecke4753cbc2014-10-24 14:26:52 +0200[diff] [blame]16extern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd,
17 struct scsi_sense_hdr *sshdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]18
Hannes Reinecke4753cbc2014-10-24 14:26:52 +0200[diff] [blame]19static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]20{
21 return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));
22}
23
24extern const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len,
25 int desc_type);
26
27extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
28 u64 * info_out);
FUJITA Tomonori3bc6a262008-03-25 09:26:49 +0900[diff] [blame]29
30extern void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq);
Hannes Reineckea1524f22015-03-27 16:46:37 +0100[diff] [blame]31extern void scsi_set_sense_information(u8 *buf, u64 info);
FUJITA Tomonori3bc6a262008-03-25 09:26:49 +0900[diff] [blame]32
Christoph Hellwig176aa9d2014-10-11 12:06:47 +0200[diff] [blame]33extern int scsi_ioctl_reset(struct scsi_device *, int __user *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]34
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]35struct scsi_eh_save {
Boaz Harrosh30b0c372007-12-13 13:47:40 +0200[diff] [blame]36 /* saved state */
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]37 int result;
38 enum dma_data_direction data_direction;
Alan Stern12265702008-07-21 10:25:52 -0400[diff] [blame]39 unsigned underflow;
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]40 unsigned char cmd_len;
Martin K. Petersendb007fc2008-07-17 04:28:31 -0400[diff] [blame]41 unsigned char prot_op;
Boaz Harrosh64a87b22008-04-30 11:19:47 +0300[diff] [blame]42 unsigned char *cmnd;
Boaz Harrosh30b0c372007-12-13 13:47:40 +0200[diff] [blame]43 struct scsi_data_buffer sdb;
Boaz Harrosh6f9a35e2007-12-13 13:50:53 +0200[diff] [blame]44 struct request *next_rq;
Boaz Harrosh30b0c372007-12-13 13:47:40 +0200[diff] [blame]45 /* new command support */
Boaz Harrosh64a87b22008-04-30 11:19:47 +0300[diff] [blame]46 unsigned char eh_cmnd[BLK_MAX_CDB];
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]47 struct scatterlist sense_sgl;
48};
49
50extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd,
51 struct scsi_eh_save *ses, unsigned char *cmnd,
52 int cmnd_size, unsigned sense_bytes);
53
54extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd,
55 struct scsi_eh_save *ses);
56
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]57#endif /* _SCSI_SCSI_EH_H */