usr/src/sys/vax/if/if_vv.h

/*      if_vv.h 4.3     83/02/20        */
/*
 * Local network header for V2LNI Ring
 * This is arbitrated by "V2LNI-PEOPLE@MIT-MC"
 * (aka Joel N. Chiappa)
 */

#define NEW_BROADCAST           /* new plas for broadcast problem */

struct vv_header {
         /* the first two fields are required by the hardware */
        u_char  vh_dhost;       /* destination address */
        u_char  vh_shost;       /* source address */
        /* the next three fields are the local network header */
        u_char  vh_version;     /* header version */
        u_char  vh_type;        /* packet type => protocol number */
        short   vh_info;        /* protocol-specific information */
};

#define RING_VERSION    2       /* current version of v2lni header */

/*
 * Packet types (protocol numbers) in v2lni header
 */
#define RING_IP         1
#define RING_IPTrailer  2
#define RING_IPNTrailer 16
#define RING_WHOAMI     0xa5    /* insure some bit transitions */

#ifdef NEW_BROADCAST
#define VV_BROADCAST    0xff    /* hardware-defined broadcast address */
#else
#define VV_BROADCAST    0x00    /* hardware-defined broadcast address */
#endif

/*
 * Proteon V2LNI Hardware definitions
 * register bit definitions - new style
 */
#define VV_ENB  01              /* Enable Operation */
#define VV_DEN  02              /* Enable DMA */
#define VV_HEN  04              /* Host Relay Enable (Rcv) */
#define VV_CPB  04              /* Clear Packet Buffer (Xmit) */
#define VV_STE  010             /* Self Test Enable (Rcv) */
#define VV_UT1  010             /* Unused (Xmit) */
#define VV_LPB  020             /* Modem Disable (Rcv) */
#define VV_INR  020             /* Initialize Ring (Xmit) */
#define VV_RST  040             /* Reset */
#define VV_IEN  0100            /* Interrupt Enable */
#define VV_RDY  0200            /* Done */
#define VV_DPR  0400            /* Data Present (Rcv) */
#define VV_RFS  0400            /* Refused (Xmit) */
#define VV_NXM  01000           /* Non Existent Memory */
#define VV_OVR  02000           /* Overrun */
#define VV_ODB  04000           /* Odd Byte (Achtung, mein Fuehrer) (Rcv) */
#define VV_UT2  04000           /* Unused (Xmit) */
#define VV_LDE  010000          /* Link Data Error (Rcv) */
#define VV_OPT  010000          /* Output Timeout (Xmit) */
#define VV_NOK  020000          /* Ring Not OK */
#define VV_BDF  040000          /* Bad Format in Operation */
#define VV_NIR  0100000         /* Not in Ring */

#define VVXERR  (VV_NXM|VV_OVR|VV_OPT|VV_BDF)   /* Xmit errs */
#define VVRERR  (VV_NXM|VV_OVR|VV_ODB|VV_BDF)   /* Rcv errs */
#define VVFE    (VV_NXM|VV_OVR)                 /* Fatal errors */

#define VV_IBITS \
"\10\20NIR\17BDF\16NOK\15LDE\14ODB\13OVR\12NXM\11DPR\10RDY\7IEN\6RST\5LPB\4STE\3HEN\2DEN\1ENB"

#define VV_OBITS \
"\10\20NIR\17BDF\16NOK\15OPT\13OVR\12NXM\11RFS\10RDY\7IEN\6RST\5INR\3HEN\2DEN\1ENB"

/* device registers */
struct vvreg {
        short   vvicsr;         /* input csr */
        u_short vviwc;          /* input word count */
        u_short vviba;          /* input addr lo */
        u_short vviea;          /* input addr hi */
        short   vvocsr;         /* output csr */
        u_short vvowc;          /* output word count */
        u_short vvoba;          /* output addr lo */
        u_short vvoea;          /* output addr hi */
};

#define VVRETRY 7