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review.shift-gmbh.com / SHIFTPHONES / mainline / linux / dbd0b42350d5717786cb8257fbe5b528f3af9772 / . / include / scsi / scsi_eh.h
blob: 468094254b3cc589f1faf9e2ae89f95b4cde260d [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +0100[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2#ifndef _SCSI_SCSI_EH_H
3#define _SCSI_SCSI_EH_H
4
James Bottomley645a0c62007-10-15 21:07:17 -0400[diff] [blame]5#include <linux/scatterlist.h>
6
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]7#include <scsi/scsi_cmnd.h>
Sagi Grimberg7708c162015-07-08 17:58:52 +0300[diff] [blame]8#include <scsi/scsi_common.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]9struct scsi_device;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]10struct Scsi_Host;
11
Tejun Heo041c5fc2006-01-23 13:09:36 +0900[diff] [blame]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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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 *);
Hannes Reinecke4753cbc2014-10-24 14:26:52 +0200[diff] [blame]18extern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd,
19 struct scsi_sense_hdr *sshdr);
Bart Van Asscheb8e162f2021-04-15 15:08:11 -0700[diff] [blame]20extern enum scsi_disposition scsi_check_sense(struct scsi_cmnd *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]21
Hannes Reinecke4753cbc2014-10-24 14:26:52 +0200[diff] [blame]22static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]23{
24 return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));
25}
26
Damien Le Moal29087692017-04-24 16:51:12 +0900[diff] [blame]27extern bool 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
Christoph Hellwig176aa9d2014-10-11 12:06:47 +0200[diff] [blame]30extern int scsi_ioctl_reset(struct scsi_device *, int __user *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]31
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]32struct scsi_eh_save {
Boaz Harrosh30b0c372007-12-13 13:47:40 +0200[diff] [blame]33 /* saved state */
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]34 int result;
Damien Le Moal8f8fed02019-10-01 16:48:39 +0900[diff] [blame]35 unsigned int resid_len;
Hannes Reinecke8e8c9d02017-04-06 15:36:33 +0200[diff] [blame]36 int eh_eflags;
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]37 enum dma_data_direction data_direction;
Alan Stern12265702008-07-21 10:25:52 -0400[diff] [blame]38 unsigned underflow;
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]39 unsigned char cmd_len;
Martin K. Petersendb007fc2008-07-17 04:28:31 -0400[diff] [blame]40 unsigned char prot_op;
Boaz Harrosh64a87b22008-04-30 11:19:47 +0300[diff] [blame]41 unsigned char *cmnd;
Boaz Harrosh30b0c372007-12-13 13:47:40 +0200[diff] [blame]42 struct scsi_data_buffer sdb;
Boaz Harrosh30b0c372007-12-13 13:47:40 +0200[diff] [blame]43 /* new command support */
Boaz Harrosh64a87b22008-04-30 11:19:47 +0300[diff] [blame]44 unsigned char eh_cmnd[BLK_MAX_CDB];
Boaz Harroshe1c23462007-10-08 16:36:45 +0200[diff] [blame]45 struct scatterlist sense_sgl;
46};
47
48extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd,
49 struct scsi_eh_save *ses, unsigned char *cmnd,
50 int cmnd_size, unsigned sense_bytes);
51
52extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd,
53 struct scsi_eh_save *ses);
54
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]55#endif /* _SCSI_SCSI_EH_H */