LXR linux/include/scsi/scsi

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _SCSI_SCSI_EH_H
   3#define _SCSI_SCSI_EH_H
   4
   5#include <linux/scatterlist.h>
   6
   7#include <scsi/scsi_cmnd.h>
   8#include <scsi/scsi_common.h>
   9struct scsi_device;
  10struct Scsi_Host;
  11
  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);
  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 *);
  18extern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd,
  19                                         struct scsi_sense_hdr *sshdr);
  20extern enum scsi_disposition scsi_check_sense(struct scsi_cmnd *);
  21
  22static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr)
  23{
  24        return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));
  25}
  26
  27extern bool scsi_get_sense_info_fld(const u8 *sense_buffer, int sb_len,
  28                                    u64 *info_out);
  29
  30extern int scsi_ioctl_reset(struct scsi_device *, int __user *);
  31
  32struct scsi_eh_save {
  33        /* saved state */
  34        int result;
  35        unsigned int resid_len;
  36        int eh_eflags;
  37        enum dma_data_direction data_direction;
  38        unsigned underflow;
  39        unsigned char cmd_len;
  40        unsigned char prot_op;
  41        unsigned char *cmnd;
  42        struct scsi_data_buffer sdb;
  43        /* new command support */
  44        unsigned char eh_cmnd[BLK_MAX_CDB];
  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
  55#endif /* _SCSI_SCSI_EH_H */
  56