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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/include/scsi/scsi_eh.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#ifndef _SCSI_SCSI_EH_H

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#define _SCSI_SCSI_EH_H

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#include <linux/scatterlist.h>

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#include <scsi/scsi_cmnd.h>

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#include <scsi/scsi_common.h>

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struct scsi_device;

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struct Scsi_Host;

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extern void scsi_eh_finish_cmd(struct scsi_cmnd *scmd,

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			       struct list_head *done_q);

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extern void scsi_eh_flush_done_q(struct list_head *done_q);

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extern void scsi_report_bus_reset(struct Scsi_Host *, int);

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extern void scsi_report_device_reset(struct Scsi_Host *, int, int);

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extern int scsi_block_when_processing_errors(struct scsi_device *);

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extern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd,

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					 struct scsi_sense_hdr *sshdr);

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extern enum scsi_disposition scsi_check_sense(struct scsi_cmnd *);

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static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr)

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{

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	return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));

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}

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extern bool scsi_get_sense_info_fld(const u8 *sense_buffer, int sb_len,

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				    u64 *info_out);

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extern int scsi_ioctl_reset(struct scsi_device *, int __user *);

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struct scsi_eh_save {

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	/* saved state */

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	int result;

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	unsigned int resid_len;

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	int eh_eflags;

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	enum dma_data_direction data_direction;

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	unsigned underflow;

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	unsigned char cmd_len;

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	unsigned char prot_op;

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	unsigned char cmnd[32];

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	struct scsi_data_buffer sdb;

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	struct scatterlist sense_sgl;

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};

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extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd,

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		struct scsi_eh_save *ses, unsigned char *cmnd,

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		int cmnd_size, unsigned sense_bytes);

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extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd,

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		struct scsi_eh_save *ses);

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#endif /* _SCSI_SCSI_EH_H */

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