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scsi_all.h revision 1.18 
      1 /*	$NetBSD: scsi_all.h,v 1.18 2001/05/14 20:35:28 bouyer 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_RESERVE      		0x16
     68 struct scsi_reserve {
     69 	u_int8_t opcode;
     70 	u_int8_t byte2;
     71 	u_int8_t unused[2];
     72 	u_int8_t length;
     73 	u_int8_t control;
     74 };
     75 
     76 #define	SCSI_RELEASE      		0x17
     77 struct scsi_release {
     78 	u_int8_t opcode;
     79 	u_int8_t byte2;
     80 	u_int8_t unused[2];
     81 	u_int8_t length;
     82 	u_int8_t control;
     83 };
     84 
     85 #define	SCSI_CHANGE_DEFINITION	0x40
     86 struct scsi_changedef {
     87 	u_int8_t opcode;
     88 	u_int8_t byte2;
     89 	u_int8_t unused1;
     90 	u_int8_t how;
     91 	u_int8_t unused[4];
     92 	u_int8_t datalen;
     93 	u_int8_t control;
     94 };
     95 #define	SC_SCSI_1 0x01
     96 #define	SC_SCSI_2 0x03
     97 
     98 /* block descriptor, for mode sense/mode select */
     99 struct scsi_blk_desc {
    100 	u_int8_t density;
    101 	u_int8_t nblocks[3];
    102 	u_int8_t reserved;
    103 	u_int8_t blklen[3];
    104 };
    105 
    106 /*
    107  * Status Byte
    108  */
    109 #define	SCSI_OK			0x00
    110 #define	SCSI_CHECK		0x02
    111 #define	SCSI_BUSY		0x08
    112 #define	SCSI_INTERM		0x10
    113 #define	SCSI_RESV_CONFLICT	0x18
    114 #define	SCSI_TERMINATED		0x22
    115 #define	SCSI_QUEUE_FULL		0x28
    116 #define	SCSI_ACA_ACTIVE		0x30
    117