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 struct scsi_device; 8 struct Scsi_Host; 9 10 extern void scsi_eh_finish_cmd(struct scsi_cmnd *scmd, 11 struct list_head *done_q); 12 extern void scsi_eh_flush_done_q(struct list_head *done_q); 13 extern void scsi_report_bus_reset(struct Scsi_Host *, int); 14 extern void scsi_report_device_reset(struct Scsi_Host *, int, int); 15 extern int scsi_block_when_processing_errors(struct scsi_device *); 16 extern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd, 17 struct scsi_sense_hdr *sshdr); 18 19 static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr) 20 { 21 return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1)); 22 } 23 24 extern const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len, 25 int desc_type); 26 27 extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len, 28 u64 * info_out); 29 30 extern void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq); 31 32 extern int scsi_ioctl_reset(struct scsi_device *, int __user *); 33 34 struct scsi_eh_save { 35 /* saved state */ 36 int result; 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 struct request *next_rq; 44 /* new command support */ 45 unsigned char eh_cmnd[BLK_MAX_CDB]; 46 struct scatterlist sense_sgl; 47 }; 48 49 extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd, 50 struct scsi_eh_save *ses, unsigned char *cmnd, 51 int cmnd_size, unsigned sense_bytes); 52 53 extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd, 54 struct scsi_eh_save *ses); 55 56 #endif /* _SCSI_SCSI_EH_H */ 57