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Annotation of Net2/arch/vax/if/if_enreg.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  * 3. All advertising materials mentioning features or use of this software
        !            14:  *    must display the following acknowledgement:
        !            15:  *     This product includes software developed by the University of
        !            16:  *     California, Berkeley and its contributors.
        !            17:  * 4. Neither the name of the University nor the names of its contributors
        !            18:  *    may be used to endorse or promote products derived from this software
        !            19:  *    without specific prior written permission.
        !            20:  *
        !            21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            31:  * SUCH DAMAGE.
        !            32:  *
        !            33:  *     @(#)if_enreg.h  7.3 (Berkeley) 6/28/90
        !            34:  */
        !            35: 
        !            36: /*
        !            37:  * Xerox experimental ethernet registers.
        !            38:  *
        !            39:  * N.B.: status register and device address are read/write,
        !            40:  * device address is read-only, rest are WRITE ONLY!
        !            41:  */
        !            42: struct endevice {
        !            43:        short   en_owc;         /* output word count (10 bits) */
        !            44:        short   en_oba;         /* output buffer address */
        !            45:        short   en_ostat;       /* output control and status */
        !            46:        short   en_odelay;      /* output start delay, 25usec units  */
        !            47:        short   en_iwc;         /* input word count */
        !            48:        short   en_iba;         /* input buffer address */
        !            49:        short   en_istat;       /* input csr */
        !            50:        short   en_addr;        /* ~device address (low 8 bits) */
        !            51: };
        !            52: 
        !            53: /*
        !            54:  * Control and status bits.
        !            55:  */
        !            56: #define EN_IERROR      0x8000          /* CRC error, buf ovflo or overrun */
        !            57: #define        EN_OERROR       0x8000          /* collision or output underrun */
        !            58: #define EN_OPDONE      0x0080          /* previous operation completed */
        !            59: #define EN_IEN         0x0040          /* enable interrupt when DONE */
        !            60: #define        EN_PROMISCUOUS  0x0002          /* promiscuous, input any packet */
        !            61: #define EN_GO          0x0001          /* start op bit */
        !            62: 
        !            63: #define        EN_BITS "\10\20ERR\10OPDONE\7IEN\2PROM\1GO"
        !            64: 
        !            65: #define        spl_enet()      spl5()

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