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lance.h revision 1.1.2.2 
      1 /*	$NetBSD: lance.h,v 1.1.2.2 2013/01/23 00:05:54 yamt Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1982, 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  *
     31  * @(#)if_lereg.h	8.2 (Berkeley) 10/30/93
     32  */
     33 
     34 #define	LEMTU		1518
     35 #define	LEMINSIZE	60	/* should be 64 if mode DTCR is set */
     36 #define	LERBUF		8
     37 #define	LERBUFLOG2	3
     38 #define	LE_RLEN		(LERBUFLOG2 << 13)
     39 #define	LE_NEXTRMD(x)	(((x) + 1) & (LERBUF - 1))
     40 #define	LETBUF		1
     41 #define	LETBUFLOG2	0
     42 #define	LE_TLEN		(LETBUFLOG2 << 13)
     43 #define	LE_NEXTTMD(x)	(((x) + 1) & (LETBUF - 1))
     44 
     45 /* Local Area Network Controller for Ethernet (LANCE) registers */
     46 struct lereg {
     47 	volatile uint16_t	ler_rdp;	/* register data port */
     48 	volatile uint16_t	ler_rap;	/* register address port */
     49 };
     50 
     51 /*
     52  * lance memory
     53  */
     54 
     55 /* receive message descriptors. bits/hadr are byte order dependent. */
     56 struct	lermd_v {
     57 	volatile uint16_t rmd0;		/* low address of packet */
     58 #if BYTE_ORDER == BIG_ENDIAN
     59 	volatile uint8_t  rmd1_bits;	/* descriptor bits */
     60 	volatile uint8_t  rmd1_hadr;	/* high address of packet */
     61 #else
     62 	volatile uint8_t  rmd1_hadr;	/* high address of packet */
     63 	volatile uint8_t  rmd1_bits;	/* descriptor bits */
     64 #endif
     65 	volatile int16_t  rmd2;		/* buffer byte count */
     66 	volatile uint16_t rmd3;		/* message byte count */
     67 };
     68 
     69 /* transmit message descriptors */
     70 struct	letmd_v {
     71 	volatile uint16_t tmd0;		/* low address of packet */
     72 #if BYTE_ORDER == BIG_ENDIAN
     73 	volatile uint8_t  tmd1_bits;	/* descriptor bits */
     74 	volatile uint8_t  tmd1_hadr;	/* high address of packet */
     75 #else
     76 	volatile uint8_t  tmd1_hadr;	/* high address of packet */
     77 	volatile uint8_t  tmd1_bits;	/* descriptor bits */
     78 #endif
     79 	volatile int16_t  tmd2;		/* buffer byte count */
     80 	volatile uint16_t tmd3;		/* transmit error bits */
     81 };
     82 
     83 struct lemem {
     84 	/* initialization block */
     85 	volatile uint16_t	lem_mode;	/* mode */
     86 	volatile uint16_t	lem_padr[3];	/* physical address */
     87 	volatile uint16_t	lem_ladrf[4];	/* logical address filter */
     88 	volatile uint16_t	lem_rdra;	/* receive descriptor addr */
     89 	volatile uint16_t	lem_rlen;	/* rda high and ring size */
     90 	volatile uint16_t	lem_tdra;	/* transmit descriptor addr */
     91 	volatile uint16_t	lem_tlen;	/* tda high and ring size */
     92 	uint16_t		lem_pad0[4];
     93 	struct lermd_v		lem_rmd[LERBUF];
     94 	struct letmd_v		lem_tmd[LETBUF];
     95 	volatile uint8_t	lem_rbuf[LERBUF][LEMTU];
     96 	volatile uint8_t	lem_tbuf[LETBUF][LEMTU];
     97 };
     98 
     99 struct le_softc {
    100 	struct lereg *sc_reg;
    101 	struct lemem *sc_mem;
    102 	uint8_t sc_enaddr[6];
    103 	int sc_curtmd;
    104 	int sc_currmd;
    105 };
    106