/*      $NetBSD: if_lereg.h,v 1.6 2012/07/26 17:15:22 tsutsui Exp $     */

/*
* Copyright (c) 1982, 1990 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*      @(#)if_lereg.h  7.1 (Berkeley) 5/8/90
*/

#define LEID            21

#define NTBUF   2
#define TLEN    1
#define NRBUF   8
#define RLEN    3
#define BUFSIZE 1518

#define vu_char         volatile u_char
#define vu_short        volatile u_short

/*
* LANCE registers.
*/
struct lereg0 {
       u_char  ler0_pad0;
       vu_char ler0_id;        /* ID */
       u_char  ler0_pad1;
       vu_char ler0_status;    /* interrupt enable/status */
};

/*
* Control and status bits -- lereg0
*/
#define LE_IE           0x80            /* interrupt enable */
#define LE_IR           0x40            /* interrupt requested */
#define LE_LOCK         0x08            /* lock status register */
#define LE_ACK          0x04            /* ack of lock */
#define LE_JAB          0x02            /* loss of tx clock (???) */
#define LE_IPL(x)       ((((x) >> 4) & 0x3) + 3)

struct lereg1 {
       vu_short        ler1_rdp;       /* data port */
       vu_short        ler1_rap;       /* register select port */
};

/*
* Control and status bits -- lereg1
*/
#define LE_SERR         0x8000
#define LE_BABL         0x4000
#define LE_CERR         0x2000
#define LE_MISS         0x1000
#define LE_MERR         0x0800
#define LE_RINT         0x0400
#define LE_TINT         0x0200
#define LE_IDON         0x0100
#define LE_INTR         0x0080
#define LE_INEA         0x0040
#define LE_RXON         0x0020
#define LE_TXON         0x0010
#define LE_TDMD         0x0008
#define LE_STOP         0x0004
#define LE_STRT         0x0002
#define LE_INIT         0x0001

#define LE_BSWP         0x0004
#define LE_ACON         0x0002
#define LE_BCON         0x0001

/*
* Overlayed on 16K dual-port RAM.
* Current size is 15,284 bytes with 8 x 1518 receive buffers and
* 2 x 1518 transmit buffers.
*/

/*
* LANCE initialization block
*/
struct init_block {
       u_short mode;           /* mode register */
       u_char padr[6];         /* ethernet address */
       u_long ladrf[2];        /* logical address filter (multicast) */
       u_short rdra;           /* low order pointer to receive ring */
       u_short rlen;           /* high order pointer and no. rings */
       u_short tdra;           /* low order pointer to transmit ring */
       u_short tlen;           /* high order pointer and no rings */
} __attribute__((__packed__));

/*
* Mode bits -- init_block
*/
#define LE_PROM         0x8000          /* promiscuous */
#define LE_INTL         0x0040          /* internal loopback */
#define LE_DRTY         0x0020          /* disable retry */
#define LE_COLL         0x0010          /* force collision */
#define LE_DTCR         0x0008          /* disable transmit crc */
#define LE_LOOP         0x0004          /* loopback */
#define LE_DTX          0x0002          /* disable transmitter */
#define LE_DRX          0x0001          /* disable receiver */
#define LE_NORMAL       0x0000

/*
* Message descriptor
*/
struct mds {
       u_short addr;
       u_short flags;
       u_short bcnt;
       u_short mcnt;
} __attribute__((__packed__));

/* Message descriptor flags */
#define LE_OWN          0x8000          /* owner bit, 0=host, 1=LANCE */
#define LE_ERR          0x4000          /* error */
#define LE_STP          0x0200          /* start of packet */
#define LE_ENP          0x0100          /* end of packet */

/* Receive ring status flags */
#define LE_FRAM         0x2000          /* framing error error */
#define LE_OFLO         0x1000          /* silo overflow */
#define LE_CRC          0x0800          /* CRC error */
#define LE_RBUFF        0x0400          /* buffer error */

/* Transmit ring status flags */
#define LE_MORE         0x1000          /* more than 1 retry */
#define LE_ONE          0x0800          /* one retry */
#define LE_DEF          0x0400          /* deferred transmit */

/* Transmit errors */
#define LE_TBUFF        0x8000          /* buffer error */
#define LE_UFLO         0x4000          /* silo underflow */
#define LE_LCOL         0x1000          /* late collision */
#define LE_LCAR         0x0800          /* loss of carrier */
#define LE_RTRY         0x0400          /* tried 16 times */