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scsipi_disk.h revision 1.6 
      1 /*	$NetBSD: scsipi_disk.h,v 1.6 2001/09/02 20:17:04 thorpej Exp $	*/
      2 
      3 /*
      4  * SCSI and SCSI-like interfaces description
      5  */
      6 
      7 /*
      8  * Some lines of this file come from a file of the name "scsi.h"
      9  * distributed by OSF as part of mach2.5,
     10  *  so the following disclaimer has been kept.
     11  *
     12  * Copyright 1990 by Open Software Foundation,
     13  * Grenoble, FRANCE
     14  *
     15  * 		All Rights Reserved
     16  *
     17  *   Permission to use, copy, modify, and distribute this software and
     18  * its documentation for any purpose and without fee is hereby granted,
     19  * provided that the above copyright notice appears in all copies and
     20  * that both the copyright notice and this permission notice appear in
     21  * supporting documentation, and that the name of OSF or Open Software
     22  * Foundation not be used in advertising or publicity pertaining to
     23  * distribution of the software without specific, written prior
     24  * permission.
     25  *
     26  *   OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
     27  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
     28  * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
     29  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
     30  * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
     31  * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
     32  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     33  */
     34 
     35 /*
     36  * Largely written by Julian Elischer (julian (at) tfs.com)
     37  * for TRW Financial Systems.
     38  *
     39  * TRW Financial Systems, in accordance with their agreement with Carnegie
     40  * Mellon University, makes this software available to CMU to distribute
     41  * or use in any manner that they see fit as long as this message is kept with
     42  * the software. For this reason TFS also grants any other persons or
     43  * organisations permission to use or modify this software.
     44  *
     45  * TFS supplies this software to be publicly redistributed
     46  * on the understanding that TFS is not responsible for the correct
     47  * functioning of this software in any circumstances.
     48  *
     49  * Ported to run under 386BSD by Julian Elischer (julian (at) tfs.com) Sept 1992
     50  */
     51 
     52 /*
     53  * SCSI command format
     54  */
     55 
     56 #define	READ_BIG		0x28
     57 #define WRITE_BIG		0x2a
     58 struct scsipi_rw_big {
     59 	u_int8_t opcode;
     60 	u_int8_t byte2;
     61 #define	SRWB_RELADDR	0x01
     62 #define	SRWB_FUA	0x08	/* force unit access */
     63 #define	SRWB_DPO	0x10	/* disable page out */
     64 	u_int8_t addr[4];
     65 	u_int8_t reserved;
     66 	u_int8_t length[2];
     67 	u_int8_t control;
     68 };
     69 
     70 #define	READ_CAPACITY		0x25
     71 struct scsipi_read_capacity {
     72 	u_int8_t opcode;
     73 	u_int8_t byte2;
     74 	u_int8_t addr[4];
     75 	u_int8_t unused[3];
     76 	u_int8_t control;
     77 };
     78 
     79 #define START_STOP		0x1b
     80 struct scsipi_start_stop {
     81 	u_int8_t opcode;
     82 	u_int8_t byte2;
     83 	u_int8_t unused[2];
     84 	u_int8_t how;
     85 #define	SSS_STOP		0x00
     86 #define	SSS_START		0x01
     87 #define	SSS_LOEJ		0x02
     88 	u_int8_t control;
     89 };
     90 
     91 
     92 /* DATAs definitions for the above commands */
     93 
     94 struct scsipi_read_cap_data {
     95 	u_int8_t addr[4];
     96 	u_int8_t length[4];
     97 };
     98