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Diffstat (limited to 'sys/scsi/scsi_changer.h')
| -rw-r--r-- | sys/scsi/scsi_changer.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/sys/scsi/scsi_changer.h b/sys/scsi/scsi_changer.h new file mode 100644 index 00000000000..5161ce8e166 --- /dev/null +++ b/sys/scsi/scsi_changer.h @@ -0,0 +1,94 @@ +/* $NetBSD: scsi_changer.h,v 1.5 1994/12/28 19:42:59 mycroft Exp $ */ + +/* + * SCSI changer interface description + */ + +/* + * Written by Stefan Grefen (grefen@goofy.zdv.uni-mainz.de soon grefen@convex.com) + * based on the SCSI System by written Julian Elischer (julian@tfs.com) + * for TRW Financial Systems. + * + * TRW Financial Systems, in accordance with their agreement with Carnegie + * Mellon University, makes this software available to CMU to distribute + * or use in any manner that they see fit as long as this message is kept with + * the software. For this reason TFS also grants any other persons or + * organisations permission to use or modify this software. + * + * TFS supplies this software to be publicly redistributed + * on the understanding that TFS is not responsible for the correct + * functioning of this software in any circumstances. + * + * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992 + */ +#ifndef _SCSI_SCSI_CHANGER_H +#define _SCSI_SCSI_CHANGER_H 1 + +/* + * SCSI command format + */ +struct scsi_read_element_status { + u_char opcode; + u_char byte2; +#define SRES_ELEM_TYPE_CODE 0x0F +#define SRES_ELEM_VOLTAG 0x10 + u_char starting_element_addr[2]; + u_char number_of_elements[2]; + u_char resv1; + u_char allocation_length[3]; + u_char resv2; + u_char control; +}; +#define RE_ALL_ELEMENTS 0 +#define RE_MEDIUM_TRANSPORT_ELEMENT 1 +#define RE_STORAGE_ELEMENT 2 +#define RE_IMPORT_EXPORT 3 +#define RE_DATA_TRANSFER_ELEMENT 4 + +struct scsi_move_medium { + u_char opcode; + u_char byte2; + u_char transport_element_address[2]; + u_char source_address[2]; + u_char destination_address[2]; + u_char rsvd[2]; + u_char invert; + u_char control; +}; + +struct scsi_position_to_element { + u_char opcode; + u_char byte2; + u_char transport_element_address[2]; + u_char source_address[2]; + u_char rsvd[2]; + u_char invert; + u_char control; +}; + +/* + * Opcodes + */ +#define POSITION_TO_ELEMENT 0x2b +#define MOVE_MEDIUM 0xa5 +#define READ_ELEMENT_STATUS 0xb8 + +struct scsi_element_status_data { + u_char first_element_reported[2]; + u_char number_of_elements_reported[2]; + u_char rsvd; + u_char byte_count_of_report[3]; +}; + +struct element_status_page { + u_char element_type_code; + u_char flags; +#define ESP_AVOLTAG 0x40 +#define ESP_PVOLTAG 0x80 + u_char element_descriptor_length[2]; + u_char rsvd; + u_char byte_count_of_descriptor_data[3]; +}; + +#endif /* _SCSI_SCSI_CHANGER_H */ + |