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

/*      if_enreg.h      4.2     81/11/07        */

/*
 * Xerox experimental ethernet registers.
 *
 * N.B.: status register and device address are read/write,
 * device address is read-only, rest are WRITE ONLY!
 */
struct endevice {
        short   en_owc;         /* output word count (10 bits) */
        short   en_oba;         /* output buffer address */
        short   en_ostat;       /* output control and status */
        short   en_odelay;      /* output start delay, 25usec units  */
        short   en_iwc;         /* input word count */
        short   en_iba;         /* input buffer address */
        short   en_istat;       /* input csr */
        short   en_addr;        /* ~device address (low 8 bits) */
};

/*
 * Control and status bits.
 */
#define EN_IERROR       0x8000          /* CRC error, buf ovflo or overrun */
#define EN_OERROR       0x8000          /* collision or output underrun */
#define EN_OPDONE       0x0080          /* previous operation completed */
#define EN_IEN          0x0040          /* enable interrupt when DONE */
#define EN_PROMISCUOUS  0x0002          /* promiscuous, input any packet */
#define EN_GO           0x0001          /* start op bit */

#define EN_BITS "\10\20ERR\10OPDONE\7IEN\2PROM\1GO"

#define spl_enet()      spl5()