1 #ifndef _SCSI_SCSI_EH_H 2 #define _SCSI_SCSI_EH_H 3 4 struct scsi_cmnd; 5 struct scsi_device; 6 struct scsi_request; 7 struct Scsi_Host; 8 9 /* 10 * This is a slightly modified SCSI sense "descriptor" format header. 11 * The addition is to allow the 0x70 and 0x71 response codes. The idea 12 * is to place the salient data from either "fixed" or "descriptor" sense 13 * format into one structure to ease application processing. 14 * 15 * The original sense buffer should be kept around for those cases 16 * in which more information is required (e.g. the LBA of a MEDIUM ERROR). 17 */ 18 struct scsi_sense_hdr { /* See SPC-3 section 4.5 */ 19 u8 response_code; /* permit: 0x0, 0x70, 0x71, 0x72, 0x73 */ 20 u8 sense_key; 21 u8 asc; 22 u8 ascq; 23 u8 byte4; 24 u8 byte5; 25 u8 byte6; 26 u8 additional_length; /* always 0 for fixed sense format */ 27 }; 28 29 30 extern void scsi_add_timer(struct scsi_cmnd *, int, 31 void (*)(struct scsi_cmnd *)); 32 extern int scsi_delete_timer(struct scsi_cmnd *); 33 extern void scsi_report_bus_reset(struct Scsi_Host *, int); 34 extern void scsi_report_device_reset(struct Scsi_Host *, int, int); 35 extern int scsi_block_when_processing_errors(struct scsi_device *); 36 extern int scsi_normalize_sense(const u8 *sense_buffer, int sb_len, 37 struct scsi_sense_hdr *sshdr); 38 extern int scsi_request_normalize_sense(struct scsi_request *sreq, 39 struct scsi_sense_hdr *sshdr); 40 extern int scsi_command_normalize_sense(struct scsi_cmnd *cmd, 41 struct scsi_sense_hdr *sshdr); 42 43 static inline int scsi_sense_is_deferred(struct scsi_sense_hdr *sshdr) 44 { 45 return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1)); 46 } 47 48 extern const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len, 49 int desc_type); 50 51 extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len, 52 u64 * info_out); 53 54 /* 55 * Reset request from external source 56 */ 57 #define SCSI_TRY_RESET_DEVICE 1 58 #define SCSI_TRY_RESET_BUS 2 59 #define SCSI_TRY_RESET_HOST 3 60 61 extern int scsi_reset_provider(struct scsi_device *, int); 62 63 #endif /* _SCSI_SCSI_EH_H */ 64