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scsi_all.h revision 1.16 
      1 /*	$NetBSD: scsi_all.h,v 1.16 2000/11/29 12:49:56 wiz Exp $	*/
      2 
      3 /*
      4  * SCSI-specific interface description.
      5  */
      6 
      7 /*
      8  * Largely written by Julian Elischer (julian (at) 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 (at) tfs.com) Sept 1992
     22  */
     23 
     24 /*
     25  * SCSI command format
     26  */
     27 
     28 /*
     29  * Define dome bits that are in ALL (or a lot of) scsi commands
     30  */
     31 #define	SCSI_CTL_LINK		0x01
     32 #define	SCSI_CTL_FLAG		0x02
     33 #define	SCSI_CTL_VENDOR		0xC0
     34 
     35 
     36 /*
     37  * Some old SCSI devices need the LUN to be set in the top 3 bits of the
     38  * second byte of the CDB.
     39  */
     40 #define	SCSI_CMD_LUN_MASK	0xe0
     41 #define	SCSI_CMD_LUN_SHIFT	5
     42 
     43 /*
     44  * XXX
     45  * Actually some SCSI driver expects this structure to be 12 bytes, so
     46  * don't change it unless you really know what you are doing
     47  */
     48 
     49 struct scsi_generic {
     50 	u_int8_t opcode;
     51 	u_int8_t bytes[11];
     52 };
     53 
     54 /* XXX Is this a command ? What's its opcode ? */
     55 struct scsi_send_diag {
     56 	u_int8_t opcode;
     57 	u_int8_t byte2;
     58 #define	SSD_UOL		0x01
     59 #define	SSD_DOL		0x02
     60 #define	SSD_SELFTEST	0x04
     61 #define	SSD_PF		0x10
     62 	u_int8_t unused[1];
     63 	u_int8_t paramlen[2];
     64 	u_int8_t control;
     65 };
     66 
     67 #define	SCSI_MODE_SENSE		0x1a
     68 struct scsi_mode_sense {
     69 	u_int8_t opcode;
     70 	u_int8_t byte2;
     71 #define	SMS_DBD				0x08
     72 	u_int8_t page;
     73 #define	SMS_PAGE_CODE 			0x3F
     74 #define	SMS_PAGE_CTRL 			0xC0
     75 #define	SMS_PAGE_CTRL_CURRENT 		0x00
     76 #define	SMS_PAGE_CTRL_CHANGEABLE 	0x40
     77 #define	SMS_PAGE_CTRL_DEFAULT 		0x80
     78 #define	SMS_PAGE_CTRL_SAVED 		0xC0
     79 	u_int8_t unused;
     80 	u_int8_t length;
     81 	u_int8_t control;
     82 };
     83 
     84 #define	SCSI_MODE_SENSE_BIG		0x54
     85 struct scsi_mode_sense_big {
     86 	u_int8_t opcode;
     87 	u_int8_t byte2;		/* same bits as small version */
     88 	u_int8_t page; 		/* same bits as small version */
     89 	u_int8_t unused[4];
     90 	u_int8_t length[2];
     91 	u_int8_t control;
     92 };
     93 
     94 #define	SCSI_MODE_SELECT		0x15
     95 struct scsi_mode_select {
     96 	u_int8_t opcode;
     97 	u_int8_t byte2;
     98 #define	SMS_SP	0x01
     99 #define	SMS_PF	0x10
    100 	u_int8_t unused[2];
    101 	u_int8_t length;
    102 	u_int8_t control;
    103 };
    104 
    105 #define	SCSI_MODE_SELECT_BIG		0x55
    106 struct scsi_mode_select_big {
    107 	u_int8_t opcode;
    108 	u_int8_t byte2;		/* same bits as small version */
    109 	u_int8_t unused[5];
    110 	u_int8_t length[2];
    111 	u_int8_t control;
    112 };
    113 
    114 #define	SCSI_RESERVE      		0x16
    115 struct scsi_reserve {
    116 	u_int8_t opcode;
    117 	u_int8_t byte2;
    118 	u_int8_t unused[2];
    119 	u_int8_t length;
    120 	u_int8_t control;
    121 };
    122 
    123 #define	SCSI_RELEASE      		0x17
    124 struct scsi_release {
    125 	u_int8_t opcode;
    126 	u_int8_t byte2;
    127 	u_int8_t unused[2];
    128 	u_int8_t length;
    129 	u_int8_t control;
    130 };
    131 
    132 #define	SCSI_CHANGE_DEFINITION	0x40
    133 struct scsi_changedef {
    134 	u_int8_t opcode;
    135 	u_int8_t byte2;
    136 	u_int8_t unused1;
    137 	u_int8_t how;
    138 	u_int8_t unused[4];
    139 	u_int8_t datalen;
    140 	u_int8_t control;
    141 };
    142 #define	SC_SCSI_1 0x01
    143 #define	SC_SCSI_2 0x03
    144 
    145 struct scsi_blk_desc {
    146 	u_int8_t density;
    147 	u_int8_t nblocks[3];
    148 	u_int8_t reserved;
    149 	u_int8_t blklen[3];
    150 };
    151 
    152 struct scsi_mode_header {
    153 	u_int8_t data_length;	/* Sense data length */
    154 	u_int8_t medium_type;
    155 	u_int8_t dev_spec;
    156 	u_int8_t blk_desc_len;
    157 };
    158 
    159 struct scsi_mode_header_big {
    160 	u_int8_t data_length[2];	/* Sense data length */
    161 	u_int8_t medium_type;
    162 	u_int8_t dev_spec;
    163 	u_int8_t unused[2];
    164 	u_int8_t blk_desc_len[2];
    165 };
    166 
    167 
    168 /*
    169  * Status Byte
    170  */
    171 #define	SCSI_OK			0x00
    172 #define	SCSI_CHECK		0x02
    173 #define	SCSI_BUSY		0x08
    174 #define	SCSI_INTERM		0x10
    175 #define	SCSI_RESV_CONFLICT	0x18
    176 #define	SCSI_TERMINATED		0x22
    177 #define	SCSI_QUEUE_FULL		0x28
    178 #define	SCSI_ACA_ACTIVE		0x30
    179