268 lines
6.9 KiB
C
268 lines
6.9 KiB
C
/* $NetBSD: if_le.c,v 1.5 2002/10/02 05:38:10 thorpej Exp $ */
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/*-
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* Copyright (c) 1996, 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Adam Glass, Gordon W. Ross and Wayne Knowles
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "opt_inet.h"
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#include "bpfilter.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/syslog.h>
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#include <sys/socket.h>
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#include <sys/device.h>
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#include <net/if.h>
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#include <net/if_ether.h>
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#include <net/if_media.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_inarp.h>
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#endif
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#include <machine/cpu.h>
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#include <machine/mainboard.h>
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#include <machine/autoconf.h>
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#include <machine/bus.h>
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#include <dev/ic/lancereg.h>
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#include <dev/ic/lancevar.h>
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#include <dev/ic/am7990reg.h>
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#include <dev/ic/am7990var.h>
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/*
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* LANCE registers.
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*/
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#define LEREG1_RDP 2 /* Offset to LANCE data register */
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#define LEREG1_RAP 6 /* Offset to LANCE address register */
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/*
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* Ethernet software status per interface.
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* The real stuff is in dev/ic/am7990var.h
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*/
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struct le_softc {
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struct am7990_softc sc_am7990; /* glue to MI code */
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bus_space_tag_t sc_bustag;
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bus_dma_tag_t sc_dmatag;
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bus_space_handle_t sc_reg; /* LANCE registers */
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bus_dmamap_t sc_dmamap;
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struct evcnt sc_intrcnt; /* Interrupt event counter */
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};
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static int le_match __P((struct device *, struct cfdata *, void *));
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static void le_attach __P((struct device *, struct device *, void *));
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CFATTACH_DECL(le, sizeof(struct le_softc),
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le_match, le_attach, NULL, NULL);
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#if defined(_KERNEL_OPT)
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#include "opt_ddb.h"
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#endif
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#ifdef DDB
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#define integrate
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#define hide
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#else
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#define integrate static __inline
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#define hide static
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#endif
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int le_intr __P((void *));
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hide void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t));
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hide u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t));
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hide void
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lewrcsr(sc, port, val)
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struct lance_softc *sc;
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u_int16_t port, val;
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{
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struct le_softc *lesc = (struct le_softc *)sc;
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bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port);
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bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val);
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}
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hide u_int16_t
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lerdcsr(sc, port)
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struct lance_softc *sc;
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u_int16_t port;
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{
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struct le_softc *lesc = (struct le_softc *)sc;
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bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port);
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return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP));
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}
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int
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le_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct confargs *ca = aux;
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int addr;
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if (strcmp(ca->ca_name, "le"))
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return 0;
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switch(cf->cf_unit) {
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case 0:
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addr = LANCE_PORT;
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break;
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default:
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return 0;
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}
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if (badaddr((void *)addr, 1))
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return 0;
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return 1;
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}
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#define LE_MEMSIZE (32*1024)
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void
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le_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct le_softc *lesc = (struct le_softc *)self;
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struct lance_softc *sc = &lesc->sc_am7990.lsc;
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struct confargs *ca = aux;
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bus_dma_tag_t dmat;
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bus_dma_segment_t seg;
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int rseg;
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/*struct confargs *ca = aux;*/
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u_char *id;
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int i;
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caddr_t kvaddr;
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switch (sc->sc_dev.dv_unit) {
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case 0:
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id = (u_char *)(ETHER_ID);
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break;
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default:
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panic("le_attach");
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}
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lesc->sc_bustag = ca->ca_bustag;
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dmat = lesc->sc_dmatag = ca->ca_dmatag;
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if (bus_space_map(ca->ca_bustag, ca->ca_addr,
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8, /* size */
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BUS_SPACE_MAP_LINEAR,
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&lesc->sc_reg) != 0) {
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printf(": cannot map registers\n");
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return;
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}
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/*
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* Allocate a physically contiguous DMA area for the chip.
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*/
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if (bus_dmamem_alloc(dmat, LE_MEMSIZE, 0, 0, &seg, 1,
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&rseg, BUS_DMA_NOWAIT)) {
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printf(": can't allocate DMA area\n");
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return;
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}
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/* Map pages into kernel memory */
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if (bus_dmamem_map(dmat, &seg, rseg, LE_MEMSIZE,
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&kvaddr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
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printf(": can't map DMA area\n");
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bus_dmamem_free(dmat, &seg, rseg);
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return;
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}
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/* Build DMA map so we can get physical address */
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if (bus_dmamap_create(dmat, LE_MEMSIZE, 1, LE_MEMSIZE,
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0, BUS_DMA_NOWAIT, &lesc->sc_dmamap)) {
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printf(": can't create DMA map\n");
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goto bad;
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}
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if (bus_dmamap_load(dmat, lesc->sc_dmamap, kvaddr, LE_MEMSIZE,
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NULL, BUS_DMA_NOWAIT)) {
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printf(": can't load DMA map\n");
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goto bad;
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}
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sc->sc_memsize = LE_MEMSIZE; /* 16K Buffer space*/
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sc->sc_mem = (void *) MIPS_PHYS_TO_KSEG1(kvaddr);
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sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr;
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sc->sc_conf3 = LE_C3_BSWP;
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/* Copy Ethernet hardware address from NVRAM */
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for (i=0; i < 6; i++)
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sc->sc_enaddr[i] = id[i*4+3]; /* XXX */
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sc->sc_copytodesc = lance_copytobuf_contig;
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sc->sc_copyfromdesc = lance_copyfrombuf_contig;
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sc->sc_copytobuf = lance_copytobuf_contig;
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sc->sc_copyfrombuf = lance_copyfrombuf_contig;
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sc->sc_zerobuf = lance_zerobuf_contig;
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sc->sc_rdcsr = lerdcsr;
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sc->sc_wrcsr = lewrcsr;
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sc->sc_hwinit = NULL;
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evcnt_attach_dynamic(&lesc->sc_intrcnt, EVCNT_TYPE_INTR, NULL,
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self->dv_xname, "intr");
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bus_intr_establish(lesc->sc_bustag, SYS_INTR_ETHER, 0, 0,
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le_intr, lesc);
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am7990_config(&lesc->sc_am7990);
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return;
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bad:
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bus_dmamem_unmap(dmat, kvaddr, LE_MEMSIZE);
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bus_dmamem_free(dmat, &seg, rseg);
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}
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int
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le_intr(arg)
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void *arg;
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{
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struct le_softc *lesc = arg;
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lesc->sc_intrcnt.ev_count++;
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return am7990_intr(&lesc->sc_am7990);
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}
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