193 lines
5.5 KiB
C
193 lines
5.5 KiB
C
/* $NetBSD: wdc_isa.c,v 1.9 1998/08/15 10:10:52 mycroft Exp $ */
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/*-
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* Copyright (c) 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 and by Onno van der Linden.
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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 <sys/types.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 <machine/bus.h>
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#include <machine/intr.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/isadmavar.h>
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#include <dev/ic/wdcvar.h>
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#define WDC_ISA_REG_NPORTS 8
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#define WDC_ISA_AUXREG_OFFSET 0x206
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#define WDC_ISA_AUXREG_NPORTS 1 /* XXX "fdc" owns ports 0x3f7/0x377 */
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/*
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* XXX This code currently doesn't even try to allow 32-bit data port use.
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*/
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struct wdc_isa_softc {
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struct wdc_softc sc_wdcdev;
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struct wdc_attachment_data sc_ad;
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isa_chipset_tag_t sc_ic;
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void *sc_ih;
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int sc_drq;
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};
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int wdc_isa_probe __P((struct device *, struct cfdata *, void *));
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void wdc_isa_attach __P((struct device *, struct device *, void *));
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struct cfattach wdc_isa_ca = {
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sizeof(struct wdc_isa_softc), wdc_isa_probe, wdc_isa_attach
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};
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static void wdc_isa_dma_setup __P((void *));
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static void wdc_isa_dma_start __P((void *, void *, size_t, int));
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static void wdc_isa_dma_finish __P((void *));
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int
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wdc_isa_probe(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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#if 0 /* XXX memset */
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struct wdc_attachment_data ad = { 0 };
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#else /* XXX memset */
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struct wdc_attachment_data ad;
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#endif /* XXX memset */
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struct isa_attach_args *ia = aux;
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int result = 0;
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#if 0 /* XXX memset */
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#else /* XXX memset */
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bzero(&ad, sizeof ad);
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#endif /* XXX memset */
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ad.iot = ia->ia_iot;
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if (bus_space_map(ad.iot, ia->ia_iobase, WDC_ISA_REG_NPORTS, 0,
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&ad.ioh))
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goto out;
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ad.auxiot = ia->ia_iot;
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if (bus_space_map(ad.auxiot, ia->ia_iobase + WDC_ISA_AUXREG_OFFSET,
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WDC_ISA_AUXREG_NPORTS, 0, &ad.auxioh))
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goto outunmap;
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result = wdcprobe(&ad);
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if (result) {
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ia->ia_iosize = WDC_ISA_REG_NPORTS;
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ia->ia_msize = 0;
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}
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bus_space_unmap(ad.auxiot, ad.auxioh, WDC_ISA_AUXREG_NPORTS);
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outunmap:
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bus_space_unmap(ad.iot, ad.ioh, WDC_ISA_REG_NPORTS);
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out:
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return (result);
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}
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void
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wdc_isa_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 wdc_isa_softc *sc = (void *)self;
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struct isa_attach_args *ia = aux;
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printf("\n");
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sc->sc_ad.iot = ia->ia_iot;
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sc->sc_ad.auxiot = ia->ia_iot;
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sc->sc_ic = ia->ia_ic;
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if (bus_space_map(sc->sc_ad.iot, ia->ia_iobase, WDC_ISA_REG_NPORTS, 0,
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&sc->sc_ad.ioh) ||
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bus_space_map(sc->sc_ad.auxiot,
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ia->ia_iobase + WDC_ISA_AUXREG_OFFSET, WDC_ISA_AUXREG_NPORTS,
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0, &sc->sc_ad.auxioh)) {
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printf("%s: couldn't map registers\n",
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sc->sc_wdcdev.sc_dev.dv_xname);
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}
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sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
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IPL_BIO, wdcintr, sc);
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if (ia->ia_drq != DRQUNK) {
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sc->sc_drq = ia->ia_drq;
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sc->sc_ad.cap |= WDC_CAPABILITY_DMA;
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sc->sc_ad.dma_arg = sc;
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sc->sc_ad.dma_setup = &wdc_isa_dma_setup;
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sc->sc_ad.dma_start = &wdc_isa_dma_start;
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sc->sc_ad.dma_finish = &wdc_isa_dma_finish;
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}
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wdcattach(&sc->sc_wdcdev, &sc->sc_ad);
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}
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static void
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wdc_isa_dma_setup(scv)
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void *scv;
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{
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struct wdc_isa_softc *sc = scv;
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if (isa_dmamap_create(sc->sc_ic, sc->sc_drq,
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MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) {
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printf("%s: can't create map for drq %d\n",
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sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq);
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sc->sc_ad.cap &= ~WDC_CAPABILITY_DMA;
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}
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}
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static void
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wdc_isa_dma_start(scv, buf, size, read)
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void *scv, *buf;
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size_t size;
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int read;
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{
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struct wdc_isa_softc *sc = scv;
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isa_dmastart(sc->sc_ic, sc->sc_drq, buf,
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size, NULL, read ? DMAMODE_READ : DMAMODE_WRITE,
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BUS_DMA_NOWAIT);
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}
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static void
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wdc_isa_dma_finish(scv)
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void *scv;
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{
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struct wdc_isa_softc *sc = scv;
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isa_dmadone(sc->sc_ic, sc->sc_drq);
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}
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