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if_le.c revision 1.3.6.2
      1 /*	$NetBSD: if_le.c,v 1.3.6.2 1997/03/06 13:26:28 is Exp $	*/
      2 
      3 #define LEDEBUG	 1		/* debug-level: 0 or 1 */
      4 /* #define LE_CHIP_IS_POKEY	/* does VS2000 need this ??? */
      5 
      6 /*-
      7  * Copyright (c) 1995 Charles M. Hannum.  All rights reserved.
      8  * Copyright (c) 1992, 1993
      9  *	The Regents of the University of California.  All rights reserved.
     10  *
     11  * This code is derived from software contributed to Berkeley by
     12  * Ralph Campbell and Rick Macklem.
     13  *
     14  * Redistribution and use in source and binary forms, with or without
     15  * modification, are permitted provided that the following conditions
     16  * are met:
     17  * 1. Redistributions of source code must retain the above copyright
     18  *    notice, this list of conditions and the following disclaimer.
     19  * 2. Redistributions in binary form must reproduce the above copyright
     20  *    notice, this list of conditions and the following disclaimer in the
     21  *    documentation and/or other materials provided with the distribution.
     22  * 3. All advertising materials mentioning features or use of this software
     23  *    must display the following acknowledgement:
     24  *	This product includes software developed by the University of
     25  *	California, Berkeley and its contributors.
     26  * 4. Neither the name of the University nor the names of its contributors
     27  *    may be used to endorse or promote products derived from this software
     28  *    without specific prior written permission.
     29  *
     30  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     31  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     32  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     33  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     34  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     35  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     36  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     37  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     38  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     39  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     40  * SUCH DAMAGE.
     41  *
     42  *	@(#)if_le.c	8.2 (Berkeley) 11/16/93
     43  */
     44 
     45 #include "bpfilter.h"
     46 
     47 #include <sys/param.h>
     48 #include <sys/syslog.h>
     49 #include <sys/socket.h>
     50 #include <sys/device.h>
     51 
     52 #include <net/if.h>
     53 #include <net/if_ether.h>
     54 
     55 #if INET
     56 #include <netinet/in.h>
     57 #include <netinet/if_ether.h>
     58 #endif
     59 
     60 /*
     61  * This would be nice, but it's not yet there...
     62  *
     63  * #include <machine/autoconf.h>
     64  */
     65 
     66 #include <machine/pte.h>
     67 #include <machine/cpu.h>
     68 #include <machine/mtpr.h>
     69 #include <machine/uvax.h>
     70 #include <machine/ka410.h>
     71 #include <machine/vsbus.h>
     72 
     73 #include <dev/ic/am7990reg.h>
     74 #define LE_NEED_BUF_CONTIG
     75 #include <dev/ic/am7990var.h>
     76 
     77 #include <dev/tc/if_levar.h>
     78 
     79 #define xdebug(x)
     80 
     81 #ifdef LE_CHIP_IS_POKEY
     82 /*
     83  * access LANCE registers and double-check their contents
     84  */
     85 #define wbflush()	/* do nothing */
     86 void lewritereg();
     87 #define LERDWR(cntl, src, dst)	{ (dst) = (src); wbflush(); }
     88 #define LEWREG(src, dst)	lewritereg(&(dst), (src))
     89 #endif
     90 
     91 #define LE_IOSIZE 64*1024	/* 64K of real-mem are reserved and already */
     92 extern void *le_iomem;		/* mapped into virt-mem by cpu_steal_pages */
     93 extern u_long le_ioaddr;	/* le_iomem is virt, le_ioaddr is phys */
     94 
     95 #define LE_SOFTC(unit)	le_cd.cd_devs[unit]
     96 #define LE_DELAY(x)	DELAY(x)
     97 
     98 int lematch __P((struct device *, void *, void *));
     99 void leattach __P((struct device *, struct device *, void *));
    100 
    101 int leintr __P((void *sc));
    102 
    103 struct cfattach le_ca = {
    104 	sizeof(struct le_softc), lematch, leattach
    105 };
    106 
    107 hide void lewrcsr __P ((struct am7990_softc *, u_int16_t, u_int16_t));
    108 hide u_int16_t lerdcsr __P ((struct am7990_softc *, u_int16_t));
    109 
    110 hide void
    111 lewrcsr(sc, port, val)
    112 	struct am7990_softc *sc;
    113 	u_int16_t port, val;
    114 {
    115 	struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
    116 
    117 #ifdef LE_CHIP_IS_POKEY
    118 	LEWREG(port, ler1->ler1_rap);
    119 	LERDWR(port, val, ler1->ler1_rdp);
    120 #else
    121 	ler1->ler1_rap = port;
    122 	ler1->ler1_rdp = val;
    123 #endif
    124 }
    125 
    126 hide u_int16_t
    127 lerdcsr(sc, port)
    128 	struct am7990_softc *sc;
    129 	u_int16_t port;
    130 {
    131 	struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
    132 	u_int16_t val;
    133 
    134 #ifdef LE_CHIP_IS_POKEY
    135 	LEWREG(port, ler1->ler1_rap);
    136 	LERDWR(0, ler1->ler1_rdp, val);
    137 #else
    138 	ler1->ler1_rap = port;
    139 	val = ler1->ler1_rdp;
    140 #endif
    141 	return (val);
    142 }
    143 
    144 integrate void
    145 lehwinit(sc)
    146 	struct am7990_softc *sc;
    147 {
    148 }
    149 
    150 int
    151 lematch(parent, match, aux)
    152 	struct device *parent;
    153 	void *match, *aux;
    154 {
    155 	struct cfdata *cf = match;
    156 	struct confargs *ca = aux;
    157 
    158 	/*
    159 	 * There could/should be more checks, but for now...
    160 	 */
    161 	if (strcmp(ca->ca_name, "le") &&
    162 	    strcmp(ca->ca_name, "am7990") &&
    163 	    strcmp(ca->ca_name, "AM7990"))
    164 		return (0);
    165 
    166 	return (1);
    167 }
    168 
    169 /*
    170  *
    171  */
    172 void
    173 leattach(parent, self, aux)
    174 	struct device *parent, *self;
    175 	void *aux;
    176 {
    177 	register struct le_softc *sc = (void *)self;
    178 	struct confargs *ca = aux;
    179 	u_char *cp;	/* pointer to MAC address */
    180 	int i;
    181 
    182 	sc->sc_r1  = (void*)uvax_phys2virt(ca->ca_ioaddr);
    183 
    184 	sc->sc_am7990.sc_conf3 = 0;
    185 	sc->sc_am7990.sc_mem = le_iomem;
    186 	sc->sc_am7990.sc_addr = le_ioaddr;
    187 	sc->sc_am7990.sc_memsize = LE_IOSIZE;
    188 	sc->sc_am7990.sc_wrcsr = lewrcsr;
    189 	sc->sc_am7990.sc_rdcsr = lerdcsr;
    190 	sc->sc_am7990.sc_hwinit = lehwinit;
    191 	sc->sc_am7990.sc_nocarrier = NULL;
    192 
    193 	xdebug(("leattach: mem=%x, addr=%x, size=%x (%d)\n",
    194 	    sc->sc_am7990.sc_mem, sc->sc_am7990.sc_addr,
    195 	    sc->sc_am7990.sc_memsize, sc->sc_am7990.sc_memsize));
    196 
    197 	sc->sc_am7990.sc_copytodesc = am7990_copytobuf_contig;
    198 	sc->sc_am7990.sc_copyfromdesc = am7990_copyfrombuf_contig;
    199 	sc->sc_am7990.sc_copytobuf = am7990_copytobuf_contig;
    200 	sc->sc_am7990.sc_copyfrombuf = am7990_copyfrombuf_contig;
    201 	sc->sc_am7990.sc_zerobuf = am7990_zerobuf_contig;
    202 
    203 	/*
    204 	 * Get the ethernet address out of rom
    205 	 */
    206 	for (i = 0; i < sizeof(sc->sc_am7990.sc_enaddr); i++) {
    207 		int *eaddr = (void*)uvax_phys2virt(ca->ca_enaddr);
    208 		sc->sc_am7990.sc_enaddr[i] = (u_char)eaddr[i];
    209 	}
    210 
    211 	bcopy(self->dv_xname, sc->sc_am7990.sc_ethercom.ec_if.if_xname,
    212 	    IFNAMSIZ);
    213 	am7990_config(&sc->sc_am7990);
    214 
    215 #ifdef LEDEBUG
    216 	sc->sc_am7990.sc_debug = LEDEBUG;
    217 #endif
    218 
    219 	vsbus_intr_register(ca, am7990_intr, &sc->sc_am7990);
    220 	vsbus_intr_enable(ca);
    221 }
    222 
    223 #ifdef LE_CHIP_IS_POKEY
    224 /*
    225  * Write a lance register port, reading it back to ensure success. This seems
    226  * to be necessary during initialization, since the chip appears to be a bit
    227  * pokey sometimes.
    228  */
    229 void
    230 lewritereg(regptr, val)
    231 	register volatile u_short *regptr;
    232 	register u_short val;
    233 {
    234 	register int i = 0;
    235 
    236 	while (*regptr != val) {
    237 		*regptr = val;
    238 		wbflush();
    239 		if (++i > 10000) {
    240 			printf("le: Reg did not settle (to x%x): x%x\n", val,
    241 			    *regptr);
    242 			return;
    243 		}
    244 		DELAY(100);
    245 	}
    246 }
    247 #endif
    248