/*      $NetBSD: if_lereg.h,v 1.5 2021/12/05 03:04:41 msaitoh Exp $ */

/*-
* Copyright (c) 1982, 1992, 1993
*      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       8.2 (Berkeley) 10/30/93
*/

#define LEMTU           1518
#define LEMINSIZE       60      /* should be 64 if mode DTCR is set */
#define LERBUF          8
#define LERBUFLOG2      3
#define LE_RLEN         (LERBUFLOG2 << 13)
#define LETBUF          1
#define LETBUFLOG2      0
#define LE_TLEN         (LETBUFLOG2 << 13)

/* Local Area Network Controller for Ethernet (LANCE) registers */
struct lereg1 {
       volatile u_short        ler1_rdp;       /* register data port */
       volatile u_short        ler1_rap;       /* register address port */
};

/* register addresses */
#define LE_CSR0         0               /* Control and status register */
#define LE_CSR1         1               /* low address of init block */
#define LE_CSR2         2               /* high address of init block */
#define LE_CSR3         3               /* Bus master and control */

/* Control and status register 0 (csr0) */
#define LE_C0_ERR       0x8000          /* error summary */
#define LE_C0_BABL      0x4000          /* transmitter timeout error */
#define LE_C0_CERR      0x2000          /* collision */
#define LE_C0_MISS      0x1000          /* missed a packet */
#define LE_C0_MERR      0x0800          /* memory error */
#define LE_C0_RINT      0x0400          /* receiver interrupt */
#define LE_C0_TINT      0x0200          /* transmitter interrupt */
#define LE_C0_IDON      0x0100          /* initialization done */
#define LE_C0_INTR      0x0080          /* interrupt condition */
#define LE_C0_INEA      0x0040          /* interrupt enable */
#define LE_C0_RXON      0x0020          /* receiver on */
#define LE_C0_TXON      0x0010          /* transmitter on */
#define LE_C0_TDMD      0x0008          /* transmit demand */
#define LE_C0_STOP      0x0004          /* disable all external activity */
#define LE_C0_STRT      0x0002          /* enable external activity */
#define LE_C0_INIT      0x0001          /* begin initialization */

#define LE_C0_BITS \
   "\20\20ERR\17BABL\16CERR\15MISS\14MERR\13RINT\
\12TINT\11IDON\10INTR\07INEA\06RXON\05TXON\04TDMD\03STOP\02STRT\01INIT"

/* Control and status register 3 (csr3) */
#define LE_C3_BSWP      0x4             /* byte swap */
#define LE_C3_ACON      0x2             /* ALE control, eh? */
#define LE_C3_BCON      0x1             /* byte control */
/*
* Current size is 13,758 bytes with 8 x 1518 receive buffers and
* 1 x 1518 transmit buffer.
*/
struct lereg2 {
       /* initialization block */
       volatile u_short        ler2_mode;              /* mode */
       volatile u_char ler2_padr[6];           /* physical address */
#ifdef new_code
       volatile u_short        ler2_ladrf[4];  /* logical address filter */
#else
       volatile u_long ler2_ladrf0;            /* logical address filter */
       volatile u_long ler2_ladrf1;            /* logical address filter */
#endif
       volatile u_short        ler2_rdra;      /* receive descriptor addr */
       volatile u_short        ler2_rlen;      /* rda high and ring size */
       volatile u_short        ler2_tdra;      /* transmit descriptor addr */
       volatile u_short        ler2_tlen;      /* tda high and ring size */
       /* receive message descriptors. bits/hadr are byte order dependent. */
       struct  lermd {
               volatile u_short        rmd0;   /* low address of packet */
               volatile u_char rmd1_bits;      /* descriptor bits */
               volatile u_char rmd1_hadr;      /* high address of packet */
               volatile short  rmd2;           /* buffer byte count */
               volatile u_short        rmd3;   /* message byte count */
       } ler2_rmd[LERBUF];
       /* transmit message descriptors */
       struct  letmd {
               volatile u_short        tmd0;   /* low address of packet */
               volatile u_char tmd1_bits;      /* descriptor bits */
               volatile u_char tmd1_hadr;      /* high address of packet */
               volatile short  tmd2;           /* buffer byte count */
               volatile u_short tmd3;          /* transmit error bits */
       } ler2_tmd[LETBUF];
       volatile char   ler2_rbuf[LERBUF][LEMTU];
       volatile char   ler2_tbuf[LETBUF][LEMTU];
};

/* Initialization block (mode) */
#define LE_MODE_PROM    0x8000          /* promiscuous mode */
/*                      0x7f80             reserved, must be zero */
#define LE_MODE_INTL    0x0040          /* internal loopback */
#define LE_MODE_DRTY    0x0020          /* disable retry */
#define LE_MODE_COLL    0x0010          /* force a collision */
#define LE_MODE_DTCR    0x0008          /* disable transmit CRC */
#define LE_MODE_LOOP    0x0004          /* loopback mode */
#define LE_MODE_DTX     0x0002          /* disable transmitter */
#define LE_MODE_DRX     0x0001          /* disable receiver */
#define LE_MODE_NORMAL  0               /* none of the above */


/* Receive message descriptor 1 (rmd1_bits) */
#define LE_R1_OWN       0x80            /* LANCE owns the packet */
#define LE_R1_ERR       0x40            /* error summary */
#define LE_R1_FRAM      0x20            /* framing error */
#define LE_R1_OFLO      0x10            /* overflow error */
#define LE_R1_CRC       0x08            /* CRC error */
#define LE_R1_BUFF      0x04            /* buffer error */
#define LE_R1_STP       0x02            /* start of packet */
#define LE_R1_ENP       0x01            /* end of packet */

#define LE_R1_BITS \
   "\20\10OWN\7ERR\6FRAM\5OFLO\4CRC\3BUFF\2STP\1ENP"

/* Transmit message descriptor 1 (tmd1_bits) */
#define LE_T1_OWN       0x80            /* LANCE owns the packet */
#define LE_T1_ERR       0x40            /* error summary */
#define LE_T1_MORE      0x10            /* multiple collisions */
#define LE_T1_ONE       0x08            /* single collision */
#define LE_T1_DEF       0x04            /* defferred transmit */
#define LE_T1_STP       0x02            /* start of packet */
#define LE_T1_ENP       0x01            /* end of packet */

#define LE_T1_BITS \
   "\20\10OWN\7ERR\6RES\5MORE\4ONE\3DEF\2STP\1ENP"

/* Transmit message descriptor 3 (tmd3) */
#define LE_T3_BUFF      0x8000          /* buffer error */
#define LE_T3_UFLO      0x4000          /* underflow error */
#define LE_T3_LCOL      0x1000          /* late collision */
#define LE_T3_LCAR      0x0800          /* loss of carrier */
#define LE_T3_RTRY      0x0400          /* retry error */
#define LE_T3_TDR_MASK  0x03ff          /* time domain reflectometry counter */

#define LE_XMD2_ONES    0xf000

#define LE_T3_BITS \
   "\20\20BUFF\17UFLO\16RES\15LCOL\14LCAR\13RTRY"


#define LE_ADDR_LOW_MASK (0xffff)

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