sys/scsi/scsi_all.h

/*
 * SCSI general  interface description
 */

/*
 * 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
 *
 *      $Id$
 */

/*
 * SCSI command format
 */

/*
 * Define dome bits that are in ALL (or a lot of) scsi commands
 */
#define SCSI_CTL_LINK   0x01
#define SCSI_CTL_FLAG   0x02
#define SCSI_CTL_VENDOR 0xC0
#define SCSI_CMD_LUN    0xA0            /*these two should not be needed*/
#define SCSI_CMD_LUN_SHIFT      5       /* LUN in the cmd is no longer SCSI */


struct scsi_generic
{
        u_char  opcode;
        u_char  bytes[11];
};

struct scsi_test_unit_ready
{
        u_char  op_code;
        u_char  byte2;
        u_char  unused[3];
        u_char  control;
};

struct scsi_send_diag
{
        u_char  op_code;
        u_char  byte2;
#define SSD_UOL         0x01
#define SSD_DOL         0x02
#define SSD_SELFTEST    0x04
#define SSD_PF          0x10
        u_char  unused[1];
        u_char  paramlen[2];
        u_char  control;
};

struct scsi_sense
{
        u_char  op_code;
        u_char  byte2;
        u_char  unused[2];
        u_char  length;
        u_char  control;
};

struct scsi_inquiry
{
        u_char  op_code;
        u_char  byte2;
        u_char  unused[2];
        u_char  length;
        u_char  control;
};

struct scsi_mode_sense
{
        u_char  op_code;
        u_char  byte2;
#define SMS_DBD                         0x08
        u_char  page;
#define SMS_PAGE_CODE                   0x3F
#define SMS_PAGE_CTRL                   0xC0
#define SMS_PAGE_CTRL_CURRENT           0x00
#define SMS_PAGE_CTRL_CHANGEABLE        0x40
#define SMS_PAGE_CTRL_DEFAULT           0x80
#define SMS_PAGE_CTRL_SAVED             0xC0
        u_char  unused;
        u_char  length;
        u_char  control;
};

struct scsi_mode_sense_big
{
        u_char  op_code;
        u_char  byte2;  /* same bits as small version */
        u_char  page;           /* same bits as small version */
        u_char  unused[4];
        u_char  length[2];
        u_char  control;
};

struct scsi_mode_select
{
        u_char  op_code;
        u_char  byte2;
#define SMS_SP  0x01
#define SMS_PF  0x10
        u_char  unused[2];
        u_char  length;
        u_char  control;
};

struct scsi_mode_select_big
{
        u_char  op_code;
        u_char  byte2;  /* same bits as small version */
        u_char  unused[5];
        u_char  length[2];
        u_char  control;
};

struct scsi_reserve
{
        u_char  op_code;
        u_char  byte2;
        u_char  unused[2];
        u_char  length;
        u_char  control;
};

struct scsi_release
{
        u_char  op_code;
        u_char  byte2;
        u_char  unused[2];
        u_char  length;
        u_char  control;
};

struct scsi_prevent
{
        u_char  op_code;
        u_char  byte2;
        u_char  unused[2];
        u_char  how;
        u_char  control;
};
#define PR_PREVENT 0x01
#define PR_ALLOW   0x00

/*
 * Opcodes
 */

#define TEST_UNIT_READY         0x00
#define REQUEST_SENSE           0x03
#define INQUIRY                 0x12
#define MODE_SELECT             0x15
#define MODE_SENSE              0x1a
#define START_STOP              0x1b
#define RESERVE                 0x16
#define RELEASE                 0x17
#define PREVENT_ALLOW           0x1e
#define POSITION_TO_ELEMENT     0x2b
#define MODE_SENSE_BIG          0x54
#define MODE_SELECT_BIG         0x55
#define MOVE_MEDIUM             0xa5
#define READ_ELEMENT_STATUS     0xb8


/*
 * sense data format
 */
#define T_DIRECT        0
#define T_SEQUENTIAL    1
#define T_PRINTER       2
#define T_PROCESSOR     3
#define T_WORM          4
#define T_READONLY      5
#define T_SCANNER       6
#define T_OPTICAL       7
#define T_NODEVICE      0x1F

#define T_CHANGER       8
#define T_COMM          9

#define T_REMOV         1
#define T_FIXED         0

struct scsi_inquiry_data
{
        u_char  device;
#define SID_TYPE        0x1F
#define SID_QUAL        0xE0
#define SID_QUAL_LU_OK  0x00
#define SID_QUAL_LU_OFFLINE     0x20
#define SID_QUAL_RSVD   0x40
#define SID_QUAL_BAD_LU 0x60
        u_char  dev_qual2;
#define SID_QUAL2       0x7F
#define SID_REMOVABLE   0x80
        u_char  version;
#define SID_ANSII       0x07
#define SID_ECMA        0x38
#define SID_ISO         0xC0
        u_char  response_format;
        u_char  additional_length;
        u_char  unused[2];
        u_char  flags;
#define SID_SftRe       0x01
#define SID_CmdQue      0x02
#define SID_Linked      0x08
#define SID_Sync        0x10
#define SID_WBus16      0x20
#define SID_WBus32      0x40
#define SID_RelAdr      0x80
        char    vendor[8];
        char    product[16];
        char    revision[4];
        u_char  extra[8];
};


struct  scsi_sense_data
{
        u_char  error_code;     /* same bits as new version */
        union
        {
                struct
                {
                        u_char  blockhi;
                        u_char  blockmed;
                        u_char  blocklow;
                } unextended;
                struct
                {
                        u_char  segment;
                        u_char  flags;  /* same bits as new version */
                        u_char  info[4];
                        u_char  extra_len;
                        /* allocate enough room to hold new stuff
                        ( by increasing 16 to 26 below) */
                        u_char  extra_bytes[26];
                } extended;
        }ext;
};
struct  scsi_sense_data_new
{
        u_char  error_code;
#define SSD_ERRCODE             0x7F
#define SSD_ERRCODE_VALID       0x80
        union
        {
                struct  /* this is depreciated, the standard says "DON'T"*/
                {
                        u_char  blockhi;
                        u_char  blockmed;
                        u_char  blocklow;
                } unextended;
                struct
                {
                        u_char  segment;
                        u_char  flags;
#define SSD_KEY         0x0F
#define SSD_ILI         0x20
#define SSD_EOM         0x40
#define SSD_FILEMARK    0x80
                        u_char  info[4];
                        u_char  extra_len;
                        u_char  cmd_spec_info[4];
                        u_char  add_sense_code;
                        u_char  add_sense_code_qual;
                        u_char  fru;
                        u_char  sense_key_spec_1;
#define SSD_SCS_VALID           0x80
                        u_char  sense_key_spec_2;
                        u_char  sense_key_spec_3;
                        u_char  extra_bytes[16];
                } extended;
        }ext;
};

struct  blk_desc
{
        u_char  density;
        u_char  nblocks[3];
        u_char  reserved;
        u_char  blklen[3];
};

struct scsi_mode_header
{
        u_char  data_length;    /* Sense data length */
        u_char  medium_type;
        u_char  dev_spec;
        u_char  blk_desc_len;
};

struct scsi_mode_header_big
{
        u_char  data_length[2]; /* Sense data length */
        u_char  medium_type;
        u_char  dev_spec;
        u_char  unused[2];
        u_char  blk_desc_len[2];
};


/*
 * Status Byte
 */
#define SCSI_OK         0x00
#define SCSI_CHECK              0x02
#define SCSI_BUSY               0x08
#define SCSI_INTERM             0x10