usr/src/sys/tahoe/vba/vxreg.h

/*      vxreg.h 1.4     86/01/23        */

/*
 * Vioc hardware interface structure.
 */
struct  vxdevice {
        char    v_vioc;         /*  0 type of interrupt + vioc busy flag */
        char    v_hdwre;        /*  1 trap, reset, or hard interrupt */
        char    v_vcbsy;        /*  2 command busy (set by host) */
        char    v_vcid;         /*  3 command identifier */
        short   v_vcp[2];       /*  4 command pointer (sent by host) */
        short   v_unused;       /*  8 unused */
        short   v_rspoff;       /*  a offset into vblock for response buf */
        char    v_ustat;        /*  c status */
        char    v_uqual;        /*  d interrupt qualifier */
        char    v_usdata[0x3E]; /*  e unsolicited interrupt data */
        short   v_maxxmt;       /* 4C max xmit block size */
        short   v_maxsilo;      /* 4E max silo size */
        char    v_ident;        /* 50 identifies type of vioc */
        char    v_fault;        /* 51 denotes fault or ready after reset */
        short   v_dcd;          /* 52 bit mask for carr detect by port */
        short   v_cts;          /* 54 bit mask for cts by port */
        short   v_dsr;          /* 56 bit mask for dsr by port */
        short   v_secrec;       /* 58 bit mask for secondary receive */
        short   v_badport;      /* 5a bit mask of failed ports */
        char    v_portyp[16];   /* 5c type of each port */
};

/* control bits for v_vioc and v_hdwre */
#define V_RESET 0x1             /* cause a vioc reset */
#define V_TRP   0x2             /* cause a vioc trap */
#define V_INTR  0x4             /* cause a vioc interrupt */
#define V_ERR   0x80            /* generic error flag */
#define V_BSY   0x80            /* generic busy flag */
#define V_UNBSY 0x80            /* not busy for unsolicited interrupt */

/* command identifier codes */
#define VXC_LIDENT      0x0000          /* load ident, set int vectors */
#define VXC_XMITDTA     0x0200          /* transmit */
#define VXC_XMITIMM     0x0400          /* xmit immediate */
#define VXC_FDTATOX     0x0300          /* flush data */
#define VXC_LPARAX      0x0600          /* load params */
#define VXC_SNDBRKX     0x0C00          /* send break to port */
#define VXC_MDMCTL      0x1000          /* auto modem control */
/* bisync specific command identifiers */
#define VXC_LPARAX1     0x060a
#define VXC_MDMCTL1     0x1004
#define VXC_HUNTMD1     0x0804

/* vioc types returned during config */
#define VXT_VIOCBOP     0x05            /* vioc-bop */
#define VXT_PVIOCX      0x0A            /* old connector panel vioc-x */
#define VXT_VIOCX       0x0B            /* new connector panel vioc-x */
#define VXT_VIOCB       0x0C            /* vioc-bisync */
#define VXT_NEW         0x10            /* new type bit (or'd in) */

#define VX_BISYNC       0x1             /* bisync flag indicator for bscport */

/* v_fault status values */
#define VXF_READY       0x55            /* no err in vioc self-initializaton */

/* modem control flags */
#define VMOD_ON         1
#define VMOD_OFF        0

#define V_ENAB  0002                    /* auto + DTR */
#define V_DISAB 0000                    /* auto + disable DTR */

#define BRK_CHR 040                     /* break character */
#define DCD_ON  020                     /* */
#define DCD_OFF 010                     /* */
#define CTS_ON  004                     /* */
#define DSR_ON  0200                    /* modem signal states for bisync */
#define DSR_OFF 0100
#define DSR_CHG (DSR_ON|DSR_OFF)

#define VX_SILO 0x800                   /* offset to base of silo */

/* input status bits returned in silo */
#define VX_PE   0x40                    /* parity error */
#define VX_FE   0x80                    /* framing error */
#define VX_RO   0xc0                    /* receiver overrun */

#define VRESPLEN        12
#define VCMDLEN         64
#define VC_IQLEN        64              /* Interrupt circular queue length */
#define NVCXBUFS        16*3            /* 3 bufs per port per viocx */
#define VC_CMDBUFL      NVCXBUFS        /* circular cmd (to exec) queue len*/

struct  vcmds {
        int     v_cmdsem;               /* # cmds waiting for itrque */
        int     v_curcnt;               /* # cmds in itrque and executing */
        caddr_t v_curcmd[VCMDLEN];      /* pointers to cmds being executed */
        int     v_fill;                 /* circular fill index */
        int     v_empty;                /* circular empty index */
        caddr_t cmdbuf[VC_CMDBUFL];     /* circular cmd (to exec) queue */
        int     v_itrfill;              /* circular intr issue queue fill */
        int     v_itrempt;              /* circular intr issue queue empty */
        short   v_itrqueu[VC_IQLEN];    /* circular intr issue queue */
};

struct  vxcmd {
        struct  vxcmd *c_fwd;
        short   cmd;
        char    par[58];                /* pad to 64 total size */
};

struct  vxmit {
        char    line;
        char    bcount;
        char    ostream[6];
};

#define SSPEED  13                      /* standard speed 9600 bps */