/*      $OpenBSD: wdsreg.h,v 1.5 2011/06/29 12:17:40 tedu Exp $ */

typedef u_int8_t physaddr[3];
typedef u_int8_t physlen[3];
#define ltophys _lto3b
#define phystol _3btol

/* WD7000 registers */
#define WDS_STAT                0       /* read */
#define WDS_IRQSTAT             1       /* read */

#define WDS_CMD                 0       /* write */
#define WDS_IRQACK              1       /* write */
#define WDS_HCR                 2       /* write */

#define WDS_IO_PORTS            8       /* size in I/O-space */

/* WDS_STAT (read) defs */
#define WDSS_IRQ                0x80
#define WDSS_RDY                0x40
#define WDSS_REJ                0x20
#define WDSS_INIT               0x10

/* WDS_IRQSTAT (read) defs */
#define WDSI_MASK               0xc0
#define WDSI_ERR                0x00
#define WDSI_MFREE              0x80
#define WDSI_MSVC               0xc0

/* WDS_CMD (write) defs */
#define WDSC_NOOP               0x00
#define WDSC_INIT               0x01
#define WDSC_DISUNSOL           0x02
#define WDSC_ENAUNSOL           0x03
#define WDSC_IRQMFREE           0x04
#define WDSC_SCSIRESETSOFT      0x05
#define WDSC_SCSIRESETHARD      0x06
#define WDSC_MSTART(m)          (0x80 + (m))
#define WDSC_MMSTART(m)         (0xc0 + (m))

/* WDS_HCR (write) defs */
#define WDSH_IRQEN              0x08
#define WDSH_DRQEN              0x04
#define WDSH_SCSIRESET          0x02
#define WDSH_ASCRESET           0x01

#define WDS_NSEG        17

struct wds_scat_gath {
        physlen seg_len;
        physaddr seg_addr;
};

struct wds_cmd {
        u_int8_t opcode;
        u_int8_t targ;
        struct scsi_generic scb;
        u_int8_t stat;
        u_int8_t venderr;
        physlen len;
        physaddr data;
        physaddr link;
        u_int8_t write;
        u_int8_t xx[6];
};

struct wds_scb {
        struct wds_cmd cmd;
        struct wds_cmd sense;

        struct wds_scat_gath scat_gath[WDS_NSEG];
        struct scsi_sense_data sense_data;
        /*----------------------------------------------------------------*/
#define SCB_PHYS_SIZE ((int)&((struct wds_scb *)0)->chain)

        TAILQ_ENTRY(wds_scb) chain;
        struct wds_scb *nexthash;
        long hashkey;
        struct scsi_xfer *xs;
        int flags;
#define SCB_ALLOC       0x01
#define SCB_ABORT       0x02
#ifdef WDSDIAG
#define SCB_SENDING     0x04
#endif
#define SCB_POLLED      0x08
#define SCB_SENSE       0x10
#define SCB_DONE        0x20    /* for internal commands only */
#define SCB_BUFFER      0x40
        int timeout;

        struct wds_buf *buf;
};

#define WDSX_SCSICMD            0x00
#define WDSX_SCSISG             0x01
#define WDSX_OPEN_RCVBUF        0x80
#define WDSX_RCV_CMD            0x81
#define WDSX_RCV_DATA           0x82
#define WDSX_RCV_DATASTAT       0x83
#define WDSX_SND_DATA           0x84
#define WDSX_SND_DATASTAT       0x85
#define WDSX_SND_CMDSTAT        0x86
#define WDSX_READINIT           0x88
#define WDSX_READSCSIID         0x89
#define WDSX_SETUNSOLIRQMASK    0x8a
#define WDSX_GETUNSOLIRQMASK    0x8b
#define WDSX_GETFIRMREV         0x8c
#define WDSX_EXECDIAG           0x8d
#define WDSX_SETEXECPARM        0x8e
#define WDSX_GETEXECPARM        0x8f

struct wds_mbx_out {
        u_int8_t cmd;
        physaddr scb_addr;
};

struct wds_mbx_in {
        u_int8_t stat;
        physaddr scb_addr;
};

/*
 * mbo.cmd values
 */
#define WDS_MBO_FREE            0x0     /* MBO entry is free */
#define WDS_MBO_START           0x1     /* MBO activate entry */

/*
 * mbi.stat values
 */
#define WDS_MBI_FREE            0x00    /* MBI entry is free */
#define WDS_MBI_OK              0x01    /* completed without error */
#define WDS_MBI_OKERR           0x02    /* completed with error */
#define WDS_MBI_ETIME           0x04
#define WDS_MBI_ERESET          0x05
#define WDS_MBI_ETARCMD         0x06
#define WDS_MBI_ERESEL          0x80
#define WDS_MBI_ESEL            0x81
#define WDS_MBI_EABORT          0x82
#define WDS_MBI_ESRESET         0x83
#define WDS_MBI_EHRESET         0x84

struct wds_setup {
        u_int8_t opcode;
        u_int8_t scsi_id;
        u_int8_t buson_t;
        u_int8_t busoff_t;
        u_int8_t xx;
        physaddr mbaddr;
        u_int8_t nomb;
        u_int8_t nimb;
};