FreeBSD/Linux Kernel Cross Reference
sys/dev/scsipi/scsipi_disk.h

     /*      $NetBSD: scsipi_disk.h,v 1.9 2003/09/17 23:33:43 mycroft Exp $  */
     
     /*
      * SCSI and SCSI-like interfaces description
      */
     
     /*
      * Some lines of this file come from a file of the name "scsi.h"
      * distributed by OSF as part of mach2.5,
     *  so the following disclaimer has been kept.
     *
     * Copyright 1990 by Open Software Foundation,
     * Grenoble, FRANCE
     *
     *              All Rights Reserved
     *
     *   Permission to use, copy, modify, and distribute this software and
     * its documentation for any purpose and without fee is hereby granted,
     * provided that the above copyright notice appears in all copies and
     * that both the copyright notice and this permission notice appear in
     * supporting documentation, and that the name of OSF or Open Software
     * Foundation not be used in advertising or publicity pertaining to
     * distribution of the software without specific, written prior
     * permission.
     *
     *   OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
     * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
     * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
     * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
     * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
     * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
     * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     */
    
    /*
     * Largely written by 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 _DEV_SCSIPI_SCSIPI_DISK_H_
    #define _DEV_SCSIPI_SCSIPI_DISK_H_
    
    /*
     * SCSI command format
     */
    
    #define READ_BIG                0x28
    #define WRITE_BIG               0x2a
    struct scsipi_rw_big {
            u_int8_t opcode;
            u_int8_t byte2;
    #define SRWB_RELADDR    0x01
    #define SRWB_FUA        0x08    /* force unit access */
    #define SRWB_DPO        0x10    /* disable page out */
            u_int8_t addr[4];
            u_int8_t reserved;
            u_int8_t length[2];
            u_int8_t control;
    } __attribute__((packed));
    
    #define READ_CAPACITY           0x25
    struct scsipi_read_capacity {
            u_int8_t opcode;
            u_int8_t byte2;
            u_int8_t addr[4];
            u_int8_t unused[3];
            u_int8_t control;
    } __attribute__((packed));
    
    /* DATAs definitions for the above commands */
    
    struct scsipi_read_cap_data {
            u_int8_t addr[4];
            u_int8_t length[4];
    } __attribute__((packed));
    
    #define READ_FORMAT_CAPACITIES  0x23
    struct scsipi_read_format_capacities {
            u_int8_t opcode;
            u_int8_t byte2;
            u_int8_t reserved1[5];
            u_int8_t length[2];
            u_int8_t reserved2[3];
    } __attribute__((packed));
    
    struct scsipi_capacity_list_header {
            u_int8_t reserved[3];
           u_int8_t length;
   } __attribute__((packed));
   
   struct scsipi_capacity_descriptor {
           u_int8_t nblks[4];
           u_int8_t byte5;
           u_int8_t blklen[3];
   } __attribute__((packed));
   
   /* codes only valid in the current/maximum capacity descriptor */
   #define SCSIPI_CAP_DESC_CODE_MASK               0x3
   #define SCSIPI_CAP_DESC_CODE_RESERVED           0x0
   #define SCSIPI_CAP_DESC_CODE_UNFORMATTED        0x1
   #define SCSIPI_CAP_DESC_CODE_FORMATTED          0x2
   #define SCSIPI_CAP_DESC_CODE_NONE               0x3
   
   #endif /* _DEV_SCSIPI_SCSIPI_DISK_H_ */

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