209 lines
6.1 KiB
C
209 lines
6.1 KiB
C
/* $NetBSD: if_le_obio.c,v 1.27 2011/07/01 18:50:41 dyoung 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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*
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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 <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_le_obio.c,v 1.27 2011/07/01 18:50:41 dyoung Exp $");
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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 <uvm/uvm_extern.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 <sys/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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/*
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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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static int lematch_obio(device_t, cfdata_t, void *);
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static void leattach_obio(device_t, device_t, void *);
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CFATTACH_DECL_NEW(le_obio, sizeof(struct le_softc),
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lematch_obio, leattach_obio, NULL, NULL);
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static void lewrcsr(struct lance_softc *, uint16_t, uint16_t);
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static uint16_t lerdcsr(struct lance_softc *, uint16_t);
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static void
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lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
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{
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struct le_softc *lesc = (struct le_softc *)sc;
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bus_space_tag_t t = lesc->sc_bustag;
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bus_space_handle_t h = lesc->sc_reg;
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bus_space_write_2(t, h, LEREG1_RAP, port);
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bus_space_write_2(t, h, LEREG1_RDP, val);
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}
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static uint16_t
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lerdcsr(struct lance_softc *sc, uint16_t port)
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{
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struct le_softc *lesc = (struct le_softc *)sc;
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bus_space_tag_t t = lesc->sc_bustag;
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bus_space_handle_t h = lesc->sc_reg;
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bus_space_write_2(t, h, LEREG1_RAP, port);
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return (bus_space_read_2(t, h, LEREG1_RDP));
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}
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static int
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lematch_obio(device_t parent, cfdata_t cf, 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, 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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static void
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leattach_obio(device_t parent, device_t self, 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 = device_private(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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sc->sc_dev = self;
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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 (bus_space_map(oba->oba_bustag, oba->oba_paddr,
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2 * sizeof(uint16_t),
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0, &lesc->sc_reg) != 0) {
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aprint_error(": cannot map registers\n");
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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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aprint_error(": DMA map create error %d\n", 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, PAGE_SIZE, 0,
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&seg, 1, &rseg,
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BUS_DMA_NOWAIT | BUS_DMA_24BIT)) != 0) {
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aprint_error(": DMA memory allocation error %d\n", 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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(void **)&sc->sc_mem,
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BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) {
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aprint_error(": DMA memory map error %d\n", 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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aprint_error(": DMA buffer map load error %d\n", error);
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bus_dmamem_unmap(dmatag, (void *)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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prom_getether(0, 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,
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am7990_intr, sc);
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}
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