240 lines
6.9 KiB
C
240 lines
6.9 KiB
C
/* $NetBSD: if_le_obio.c,v 1.12 2001/05/30 12:28:50 mrg Exp $ */
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/*-
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* Copyright (c) 1997, 1998 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 Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace
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* Simulation Facility, NASA Ames Research Center; Paul Kranenburg.
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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/device.h>
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#include <sys/malloc.h>
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#include <sys/socket.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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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <machine/autoconf.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 0 /* Register Data port */
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#define LEREG1_RAP 2 /* Register Address port */
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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_dmamap_t sc_dmamap;
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bus_space_handle_t sc_reg; /* LANCE registers */
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};
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#define MEMSIZE 0x4000 /* LANCE memory size */
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int lematch_obio __P((struct device *, struct cfdata *, void *));
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void leattach_obio __P((struct device *, struct device *, void *));
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/*
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* Media types supported.
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*/
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static int lemedia[] = {
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IFM_ETHER|IFM_10_T,
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};
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#define NLEMEDIA (sizeof(lemedia) / sizeof(lemedia[0]))
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struct cfattach le_obio_ca = {
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sizeof(struct le_softc), lematch_obio, leattach_obio
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};
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extern struct cfdriver le_cd;
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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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static void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t));
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static u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t));
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static 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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static 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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lematch_obio(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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union obio_attach_args *uoba = aux;
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struct obio4_attach_args *oba;
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if (uoba->uoba_isobio4 == 0)
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return (0);
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oba = &uoba->uoba_oba4;
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return (bus_space_probe(oba->oba_bustag, 0, oba->oba_paddr,
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2, /* probe size */
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0, /* offset */
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0, /* flags */
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NULL, NULL));
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}
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void
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leattach_obio(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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union obio_attach_args *uoba = aux;
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struct obio4_attach_args *oba = &uoba->uoba_oba4;
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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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bus_dma_segment_t seg;
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bus_dma_tag_t dmatag;
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int rseg;
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int error;
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/* XXX the following declarations should be elsewhere */
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extern void myetheraddr __P((u_char *));
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lesc->sc_bustag = oba->oba_bustag;
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lesc->sc_dmatag = dmatag = oba->oba_dmatag;
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if (obio_bus_map(oba->oba_bustag, oba->oba_paddr,
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0, 2 * sizeof(u_int16_t),
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0, 0,
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&lesc->sc_reg) != 0) {
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printf("%s @ obio: cannot map registers\n", self->dv_xname);
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return;
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}
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/* Get a DMA handle */
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if ((error = bus_dmamap_create(dmatag, MEMSIZE, 1, MEMSIZE, 0,
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BUS_DMA_NOWAIT|BUS_DMA_24BIT,
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&lesc->sc_dmamap)) != 0) {
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printf("%s: DMA map create error %d\n",
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self->dv_xname, error);
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return;
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}
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/* Allocate DMA buffer */
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if ((error = bus_dmamem_alloc(dmatag, MEMSIZE, NBPG, 0,
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&seg, 1, &rseg,
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BUS_DMA_NOWAIT | BUS_DMA_24BIT)) != 0) {
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printf("%s: DMA memory allocation error %d\n",
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self->dv_xname, error);
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return;
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}
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/* Map DMA buffer into kernel space */
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if ((error = bus_dmamem_map(dmatag, &seg, rseg, MEMSIZE,
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(caddr_t *)&sc->sc_mem,
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BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) {
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printf("%s: DMA memory map error %d\n", self->dv_xname, error);
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bus_dmamem_free(lesc->sc_dmatag, &seg, rseg);
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return;
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}
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/* Load DMA buffer */
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if ((error = bus_dmamap_load(dmatag, lesc->sc_dmamap,
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sc->sc_mem, MEMSIZE, NULL,
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BUS_DMA_NOWAIT)) != 0) {
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printf("%s: DMA buffer map load error %d\n",
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self->dv_xname, error);
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bus_dmamem_unmap(dmatag, (caddr_t)sc->sc_mem, MEMSIZE);
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bus_dmamem_free(dmatag, &seg, rseg);
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return;
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}
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sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr & 0xffffff;
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sc->sc_memsize = MEMSIZE;
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sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON;
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sc->sc_supmedia = lemedia;
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sc->sc_nsupmedia = NLEMEDIA;
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sc->sc_defaultmedia = lemedia[0];
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myetheraddr(sc->sc_enaddr);
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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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am7990_config(&lesc->sc_am7990);
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/* Install interrupt */
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(void)bus_intr_establish(lesc->sc_bustag, oba->oba_pri, IPL_NET, 0,
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am7990_intr, sc);
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}
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