/* $OpenBSD: if_le_dec.c,v 1.3 1997/11/07 08:07:47 niklas Exp $ */ /* $NetBSD: if_le_dec.c,v 1.3 1996/10/13 01:38:38 christos Exp $ */ /*- * Copyright (c) 1995 Charles M. Hannum. All rights reserved. * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Ralph Campbell and Rick Macklem. * * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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_le.c 8.2 (Berkeley) 11/16/93 */ #include "bpfilter.h" #include <sys/param.h> #include <sys/systm.h> #include <sys/mbuf.h> #include <sys/syslog.h> #include <sys/socket.h> #include <sys/device.h> #include <net/if.h> #ifdef INET #include <netinet/in.h> #include <netinet/if_ether.h> #endif #include <dev/ic/am7990reg.h> #include <dev/ic/am7990var.h> #include <dev/tc/if_levar.h> #include <dev/tc/tcvar.h> /* access LANCE registers */ void le_dec_writereg __P((volatile u_short *regptr, u_short val)); #define LERDWR(cntl, src, dst) { (dst) = (src); tc_mb(); } #define LEWREG(src, dst) le_dec_writereg(&(dst), (src)) hide void le_dec_wrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t)); hide u_int16_t le_dec_rdcsr __P((struct am7990_softc *, u_int16_t)); void dec_le_common_attach(sc, eap) struct am7990_softc *sc; u_char *eap; { int i; sc->sc_rdcsr = le_dec_rdcsr; sc->sc_wrcsr = le_dec_wrcsr; sc->sc_hwinit = NULL; sc->sc_conf3 = 0; sc->sc_addr = 0; sc->sc_memsize = 65536; /* * Get the ethernet address out of rom */ for (i = 0; i < sizeof(sc->sc_arpcom.ac_enaddr); i++) { sc->sc_arpcom.ac_enaddr[i] = *eap; eap += 4; } am7990_config(sc); } hide void le_dec_wrcsr(sc, port, val) struct am7990_softc *sc; u_int16_t port, val; { struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1; LEWREG(port, ler1->ler1_rap); LERDWR(port, val, ler1->ler1_rdp); } hide u_int16_t le_dec_rdcsr(sc, port) struct am7990_softc *sc; u_int16_t port; { struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1; u_int16_t val; LEWREG(port, ler1->ler1_rap); LERDWR(0, ler1->ler1_rdp, val); return (val); } /* * Write a lance register port, reading it back to ensure success. This seems * to be necessary during initialization, since the chip appears to be a bit * pokey sometimes. */ void le_dec_writereg(regptr, val) register volatile u_short *regptr; register u_short val; { register int i = 0; while (*regptr != val) { *regptr = val; tc_mb(); if (++i > 10000) { printf("le: Reg did not settle (to x%x): x%x\n", val, *regptr); return; } DELAY(100); } } /* * Routines for accessing the transmit and receive buffers are provided * by am7990.c, because of the LE_NEED_BUF_* macros defined above. * Unfortunately, CPU addressing of these buffers is done in one of * 3 ways: * - contiguous (for the 3max and turbochannel option card) * - gap2, which means shorts (2 bytes) interspersed with short (2 byte) * spaces (for the pmax) * - gap16, which means 16bytes interspersed with 16byte spaces * for buffers which must begin on a 32byte boundary (for 3min, maxine, * and alpha) * The buffer offset is the logical byte offset, assuming contiguous storage. */