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      1 /*	$NetBSD: enreg.h,v 1.2 2002/09/11 01:46:30 mycroft Exp $ */
      2 /*
      3  * Copyright (c) 1997 Rolf Grossmann
      4  * All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *      This product includes software developed by Rolf Grossmann.
     17  * 4. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /*
     33  * Ethernet chip description
     34  */
     35 
     36 struct en_regs {
     37     unsigned char txstat; /* 0 */
     38     unsigned char txmask; /* 1 */
     39     unsigned char rxstat; /* 2 */
     40     unsigned char rxmask; /* 3 */
     41     unsigned char txmode; /* 4 */
     42     unsigned char rxmode; /* 5 */
     43     unsigned char reset; /* 6 */
     44     char pad;
     45     unsigned char addr[6]; /* 8 to d - "physical" network address */
     46 };
     47 
     48 #define EN_TXS_READY     0x80 /* ready for packet */
     49 #define EN_TXS_BUSY      0x40 /* receive carrier detect */
     50 #define EN_TXS_TXRECV    0x20 /* transmission received */
     51 #define EN_TXS_SHORTED   0x10 /* possible coax short */
     52 #define EN_TXS_UNDERFLOW 0x08 /* underflow on xmit */
     53 #define EN_TXS_COLLERR   0x04 /* collision detected */
     54 #define EN_TXS_COLLERR16 0x02 /* 16th collision error */
     55 #define EN_TXS_PARERR    0x01 /* parity error in tx data */
     56 
     57 #define EN_TXM_READYIE     0x80 /* tx int on packet ready */
     58 #define EN_TXM_TXRXIE      0x20 /* tx int on transmit rec'd */
     59 #define EN_TXM_UNDERFLOWIE 0x08 /* tx int on underflow */
     60 #define EN_TXM_COLLIE      0x04 /* tx int on collision */
     61 #define EN_TXM_COLL16IE    0x02 /* tx int on 16th collision */
     62 #define EN_TXM_PARERRIE    0x01 /* tx int on parity error */
     63 
     64 /* same bits for rxstat and rxmask */
     65 #define EN_RX_OK       0x80 /* packet received ok */
     66 #define EN_RX_RESET    0x10 /* reset packet received */
     67 #define EN_RX_SHORT    0x08 /* < minimum length */
     68 #define EN_RX_ALIGNERR 0x04 /* alignment error */
     69 #define EN_RX_CRCERR   0x02 /* CRC error */
     70 #define EN_RX_OVERFLOW 0x01 /* receiver FIFO overflow */
     71 
     72 #define EN_TMD_COLLMASK   0xf0 /* collision count */
     73 #define EN_TMD_COLLSHIFT     4
     74 #define EN_TMD_PARIGNORE  0x08 /* ignore parity */
     75 #define EN_TMD_TURBO1	0x04
     76 #define EN_TMD_LB_DISABLE 0x02 /* loop back disabled */
     77 #define EN_TMD_DISCONTENT 0x01 /* disable contention (rx carrier) */
     78 
     79 #define EN_RMD_TEST         0x80 /* must be zero */
     80 #define EN_RMD_ADDRSIZE     0x10 /* reduces NODE match to 5 chars */
     81 #define EN_RMD_SHORTENABLE  0x08 /* "rx packets >= 10 bytes" - <? */
     82 #define EN_RMD_RESETENABLE  0x04 /* dunno, treat as MBZ */
     83 #define EN_RMD_WHATRECV     0x03 /* controls what packets are received */
     84 #define EN_RMD_RECV_PROMISC 0x03 /* all packets */
     85 #define EN_RMD_RECV_MULTI   0x02 /* accept broad/multicasts */
     86 #define EN_RMD_RECV_NORMAL  0x01 /* accept broad/limited multicasts */
     87 #define EN_RMD_RECV_NONE    0x00 /* accept no packets */
     88 
     89 #define EN_RST_RESET 0x80 /* reset interface */
     90 
     91 #define ENRX_EOP 0x80000000 /* end-of-packet flag */
     92 #define ENRX_BOP 0x40000000 /* beginning-of-packet flag */
     93 #define ENTX_EOP 0x80000000 /* end-of-packet flag */
     94 
     95