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scsi_all.h revision 1.16.2.2 
      1 /*	$NetBSD: scsi_all.h,v 1.16.2.2 2003/01/07 21:34:48 thorpej 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 #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_ */
    122