LXR linux/include/scsi/scsi

   1#ifndef _SCSI_SCSI_EH_H
   2#define _SCSI_SCSI_EH_H
   3
   4#include <linux/scatterlist.h>
   5
   6#include <scsi/scsi_cmnd.h>
   7#include <scsi/scsi_common.h>
   8struct scsi_device;
   9struct Scsi_Host;
  10
  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);
  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 *);
  17extern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd,
  18                                         struct scsi_sense_hdr *sshdr);
  19
  20static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr)
  21{
  22        return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));
  23}
  24
  25extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
  26                                   u64 * info_out);
  27
  28extern int scsi_ioctl_reset(struct scsi_device *, int __user *);
  29
  30struct scsi_eh_save {
  31        /* saved state */
  32        int result;
  33        enum dma_data_direction data_direction;
  34        unsigned underflow;
  35        unsigned char cmd_len;
  36        unsigned char prot_op;
  37        unsigned char *cmnd;
  38        struct scsi_data_buffer sdb;
  39        struct request *next_rq;
  40        /* new command support */
  41        unsigned char eh_cmnd[BLK_MAX_CDB];
  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
  52#endif /* _SCSI_SCSI_EH_H */
  53