scsi_all.h

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    1 /*      $NetBSD: scsi_all.h,v 1.19 2003/01/06 21:02:18 matt Exp $       */
    2 
    3 /*
    4  * SCSI-specific interface description.
    5  */
    6 
    7 /*
    8  * Largely written by Julian Elischer (julian@tfs.com)
    9  * for TRW Financial Systems.
   10  *
   11  * TRW Financial Systems, in accordance with their agreement with Carnegie
   12  * Mellon University, makes this software available to CMU to distribute
   13  * or use in any manner that they see fit as long as this message is kept with
   14  * the software. For this reason TFS also grants any other persons or
   15  * organisations permission to use or modify this software.
   16  *
   17  * TFS supplies this software to be publicly redistributed
   18  * on the understanding that TFS is not responsible for the correct
   19  * functioning of this software in any circumstances.
   20  *
   21  * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
   22  */
   23 
   24 #ifndef _DEV_SCSIPI_SCSI_ALL_H_
   25 #define _DEV_SCSIPI_SCSI_ALL_H_
   26 
   27 /*
   28  * SCSI command format
   29  */
   30 
   31 /*
   32  * Define dome bits that are in ALL (or a lot of) scsi commands
   33  */
   34 #define SCSI_CTL_LINK           0x01
   35 #define SCSI_CTL_FLAG           0x02
   36 #define SCSI_CTL_VENDOR         0xC0
   37 
   38 
   39 /*
   40  * Some old SCSI devices need the LUN to be set in the top 3 bits of the
   41  * second byte of the CDB.
   42  */
   43 #define SCSI_CMD_LUN_MASK       0xe0
   44 #define SCSI_CMD_LUN_SHIFT      5
   45 
   46 /*
   47  * XXX
   48  * Actually some SCSI driver expects this structure to be 12 bytes, so
   49  * don't change it unless you really know what you are doing
   50  */
   51 
   52 struct scsi_generic {
   53         u_int8_t opcode;
   54         u_int8_t bytes[11];
   55 };
   56 
   57 /* XXX Is this a command ? What's its opcode ? */
   58 struct scsi_send_diag {
   59         u_int8_t opcode;
   60         u_int8_t byte2;
   61 #define SSD_UOL         0x01
   62 #define SSD_DOL         0x02
   63 #define SSD_SELFTEST    0x04
   64 #define SSD_PF          0x10
   65         u_int8_t unused[1];
   66         u_int8_t paramlen[2];
   67         u_int8_t control;
   68 };
   69 
   70 #define SCSI_RESERVE                    0x16
   71 struct scsi_reserve {
   72         u_int8_t opcode;
   73         u_int8_t byte2;
   74         u_int8_t unused[2];
   75         u_int8_t length;
   76         u_int8_t control;
   77 };
   78 
   79 #define SCSI_RELEASE                    0x17
   80 struct scsi_release {
   81         u_int8_t opcode;
   82         u_int8_t byte2;
   83         u_int8_t unused[2];
   84         u_int8_t length;
   85         u_int8_t control;
   86 };
   87 
   88 #define SCSI_CHANGE_DEFINITION  0x40
   89 struct scsi_changedef {
   90         u_int8_t opcode;
   91         u_int8_t byte2;
   92         u_int8_t unused1;
   93         u_int8_t how;
   94         u_int8_t unused[4];
   95         u_int8_t datalen;
   96         u_int8_t control;
   97 };
   98 #define SC_SCSI_1 0x01
   99 #define SC_SCSI_2 0x03
  100 
  101 /* block descriptor, for mode sense/mode select */
  102 struct scsi_blk_desc {
  103         u_int8_t density;
  104         u_int8_t nblocks[3];
  105         u_int8_t reserved;
  106         u_int8_t blklen[3];
  107 };
  108 
  109 /*
  110  * Status Byte
  111  */
  112 #define SCSI_OK                 0x00
  113 #define SCSI_CHECK              0x02
  114 #define SCSI_BUSY               0x08
  115 #define SCSI_INTERM             0x10
  116 #define SCSI_RESV_CONFLICT      0x18
  117 #define SCSI_TERMINATED         0x22
  118 #define SCSI_QUEUE_FULL         0x28
  119 #define SCSI_ACA_ACTIVE         0x30
  120 
  121 #endif /* _DEV_SCSIPI_SCSI_ALL_H_ */

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sys/dev/scsipi/scsi_all.h