sys/h/mbareg.h

/*      mbareg.h        4.15    81/05/03        */

/*
 * VAX MASSBUS adapter registers
 */

struct mba_regs
{
        int     mba_csr;                /* configuration register */
        int     mba_cr;                 /* control register */
        int     mba_sr;                 /* status register */
        int     mba_var;                /* virtual address register */
        int     mba_bcr;                /* byte count register */
        int     mba_dr;
        int     mba_pad1[250];
        struct mba_drv {                /* per drive registers */
                int     mbd_cs1;                /* control status */
                int     mbd_ds;                 /* drive status */
                int     mbd_er1;                /* error register */
                int     mbd_mr1;                /* maintenance register */
                int     mbd_as;                 /* attention status */
                int     mbd_da;                 /* desired address (disks) */
#define mbd_fc  mbd_da                          /* frame count (tapes) */
                int     mbd_dt;                 /* drive type */
                int     mbd_la;                 /* look ahead (disks) */
#define mbd_ck  mbd_la                          /* ??? (tapes) */
                int     mbd_sn;                 /* serial number */
                int     mbd_of;                 /* ??? */
#define mbd_tc  mbd_of                          /* ??? */
                int     mbd_fill[22];
        } mba_drv[8];
        struct  pte mba_map[256];       /* io space virtual map */
        int     mba_pad2[256*5];        /* to size of a nexus */
};

/*
 * Bits in mba_cr
 */
#define MBCR_INIT       0x1             /* init mba */
#define MBCR_IE         0x4             /* enable mba interrupts */

/*
 * Bits in mba_sr
 */
#define MBSR_DTBUSY     0x80000000      /* data transfer busy */
#define MBSR_NRCONF     0x40000000      /* no response confirmation */
#define MBSR_CRD        0x20000000      /* corrected read data */
#define MBSR_CBHUNG     0x00800000      /* control bus hung */
#define MBSR_PGE        0x00080000      /* programming error */
#define MBSR_NED        0x00040000      /* non-existant drive */
#define MBSR_MCPE       0x00020000      /* massbus control parity error */
#define MBSR_ATTN       0x00010000      /* attention from massbus */
#define MBSR_SPE        0x00004000      /* silo parity error */
#define MBSR_DTCMP      0x00002000      /* data transfer completed */
#define MBSR_DTABT      0x00001000      /* data transfer aborted */
#define MBSR_DLT        0x00000800      /* data late */
#define MBSR_WCKUP      0x00000400      /* write check upper */
#define MBSR_WCKLWR     0x00000200      /* write check lower */
#define MBSR_MXF        0x00000100      /* miss transfer error */
#define MBSR_MBEXC      0x00000080      /* massbus exception */
#define MBSR_MDPE       0x00000040      /* massbus data parity error */
#define MBSR_MAPPE      0x00000020      /* page frame map parity error */
#define MBSR_INVMAP     0x00000010      /* invalid map */
#define MBSR_ERRCONF    0x00000008      /* error confirmation */
#define MBSR_RDS        0x00000004      /* read data substitute */
#define MBSR_ISTIMO     0x00000002      /* interface sequence timeout */
#define MBSR_RDTIMO     0x00000001      /* read data timeout */

#define MBSR_BITS \
"\20\40DTBUSY\37NRCONF\36CRD\30CBHUNG\24PGE\23NED\22MCPE\21ATTN\
\17SPE\16DTCMP\15DTABT\14DLT\13WCKUP\12WCKLWR\11MXF\10MBEXC\7MDPE\
\6MAPPE\5INVMAP\4ERRCONF\3RDS\2ISTIMO\1RDTIMO"

#define MBSR_HARD       (MBSR_PGE|MBSR_ERRCONF|MBSR_ISTIMO|MBSR_RDTIMO)

#define MBSR_EBITS      (~(MBSR_DTBUSY|MBSR_CRD|MBSR_ATTN|MBSR_DTCMP))

#ifdef KERNEL
extern  char    mbsr_bits[];
#endif

/*
 * Commands for mbd_cs1
 */
#define MB_WCOM         0x30
#define MB_RCOM         0x38
#define MB_GO           0x1

/*
 * Bits in mbd_ds.
 */
#define MBDS_ERR        0x00004000      /* error in drive */
#define MBDS_MOL        0x00001000      /* medium on line */
#define MBDS_DPR        0x00000100      /* drive present */
#define MBDS_DRY        0x00000080      /* drive ready */

#define MBDS_DREADY     (MBDS_MOL|MBDS_DPR|MBDS_DRY)

/*
 * Bits in mbd_dt
 */
#define MBDT_NSA        0x8000          /* not sector addressible */
#define MBDT_TAP        0x4000          /* is a tape */
#define MBDT_MOH        0x2000          /* moving head */
#define MBDT_7CH        0x1000          /* 7 channel */
#define MBDT_DRQ        0x800           /* drive request required */
#define MBDT_SPR        0x400           /* slave present */

#define MBDT_TYPE       0x1ff
#define MBDT_MASK       (MBDT_NSA|MBDT_TAP|MBDT_TYPE)

/* type codes for disk drives */
#define MBDT_RP04       020
#define MBDT_RP05       021
#define MBDT_RP06       022
#define MBDT_RP07       042
#define MBDT_RM03       024
#define MBDT_RM05       027
#define MBDT_RM80       026

/* type codes for tape drives */
#define MBDT_TM03       050
#define MBDT_TE16       051
#define MBDT_TU45       052
#define MBDT_TU77       054
#define MBDT_TU78       0101            /* can't handle these (yet) */