210 lines
6.2 KiB
C
210 lines
6.2 KiB
C
/* $NetBSD: wdc_isapnp.c,v 1.26 2004/01/03 22:56:53 thorpej Exp $ */
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/*-
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* Copyright (c) 1998, 2003 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/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: wdc_isapnp.c,v 1.26 2004/01/03 22:56:53 thorpej 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 <sys/malloc.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/isapnp/isapnpreg.h>
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#include <dev/isapnp/isapnpvar.h>
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#include <dev/isapnp/isapnpdevs.h>
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#include <dev/ata/atavar.h>
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#include <dev/ic/wdcreg.h>
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#include <dev/ic/wdcvar.h>
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struct wdc_isapnp_softc {
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struct wdc_softc sc_wdcdev;
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struct wdc_channel *wdc_chanlist[1];
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struct wdc_channel wdc_channel;
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struct ata_queue wdc_chqueue;
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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_isapnp_probe __P((struct device *, struct cfdata *, void *));
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void wdc_isapnp_attach __P((struct device *, struct device *, void *));
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CFATTACH_DECL(wdc_isapnp, sizeof(struct wdc_isapnp_softc),
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wdc_isapnp_probe, wdc_isapnp_attach, NULL, NULL);
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#ifdef notyet
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static void wdc_isapnp_dma_setup __P((struct wdc_isapnp_softc *));
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static void wdc_isapnp_dma_start __P((void *, void *, size_t, int));
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static void wdc_isapnp_dma_finish __P((void *));
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#endif
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int
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wdc_isapnp_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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int pri, variant;
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pri = isapnp_devmatch(aux, &isapnp_wdc_devinfo, &variant);
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if (pri && variant > 0)
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pri = 0;
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return (pri);
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}
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void
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wdc_isapnp_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_isapnp_softc *sc = (void *)self;
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struct isapnp_attach_args *ipa = aux;
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int i;
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if (ipa->ipa_nio != 2 ||
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ipa->ipa_nmem != 0 ||
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ipa->ipa_nmem32 != 0 ||
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ipa->ipa_nirq != 1 ||
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ipa->ipa_ndrq > 1) {
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printf(": unexpected configuration\n");
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return;
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}
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if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) {
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printf(": couldn't map registers\n");
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return;
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}
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printf(": %s %s\n", ipa->ipa_devident, ipa->ipa_devclass);
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sc->wdc_channel.cmd_iot = ipa->ipa_iot;
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sc->wdc_channel.ctl_iot = ipa->ipa_iot;
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/*
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* An IDE controller can feed us the regions in any order. Pass
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* them along with the 8-byte region in sc_ad.ioh, and the other
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* (2 byte) region in auxioh.
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*/
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if (ipa->ipa_io[0].length == 8) {
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sc->wdc_channel.cmd_baseioh = ipa->ipa_io[0].h;
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sc->wdc_channel.ctl_ioh = ipa->ipa_io[1].h;
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} else {
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sc->wdc_channel.cmd_baseioh = ipa->ipa_io[1].h;
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sc->wdc_channel.ctl_ioh = ipa->ipa_io[0].h;
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}
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for (i = 0; i < WDC_NREG; i++) {
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if (bus_space_subregion(sc->wdc_channel.cmd_iot,
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sc->wdc_channel.cmd_baseioh, i, i == 0 ? 4 : 1,
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&sc->wdc_channel.cmd_iohs[i]) != 0) {
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printf(": couldn't subregion registers\n");
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return;
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}
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}
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sc->wdc_channel.data32iot = sc->wdc_channel.cmd_iot;
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sc->wdc_channel.data32ioh = sc->wdc_channel.cmd_iohs[0];
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sc->sc_ic = ipa->ipa_ic;
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sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num,
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ipa->ipa_irq[0].type, IPL_BIO, wdcintr, &sc->wdc_channel);
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#ifdef notyet
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if (ipa->ipa_ndrq > 0) {
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sc->sc_drq = ipa->ipa_drq[0].num;
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sc->sc_ad.cap |= WDC_CAPABILITY_DMA;
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sc->sc_ad.dma_start = &wdc_isapnp_dma_start;
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sc->sc_ad.dma_finish = &wdc_isapnp_dma_finish;
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wdc_isapnp_dma_setup(sc);
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}
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#endif
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sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32;
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sc->sc_wdcdev.PIO_cap = 0;
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sc->wdc_chanlist[0] = &sc->wdc_channel;
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sc->sc_wdcdev.channels = sc->wdc_chanlist;
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sc->sc_wdcdev.nchannels = 1;
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sc->wdc_channel.ch_channel = 0;
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sc->wdc_channel.ch_wdc = &sc->sc_wdcdev;
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sc->wdc_channel.ch_queue = &sc->wdc_chqueue;
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wdcattach(&sc->wdc_channel);
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}
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#ifdef notyet
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static void
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wdc_isapnp_dma_setup(sc)
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struct wdc_isapnp_softc *sc;
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{
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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_wdcdev.cap &= ~WDC_CAPABILITY_DMA;
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}
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}
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static void
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wdc_isapnp_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_isapnp_softc *sc = scv;
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isa_dmastart(sc->sc_ic, sc->sc_drq, buf, size, NULL,
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(read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND,
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BUS_DMA_NOWAIT);
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}
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static void
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wdc_isapnp_dma_finish(scv)
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void *scv;
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{
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struct wdc_isapnp_softc *sc = scv;
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isa_dmadone(sc->sc_ic, sc->sc_drq);
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}
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#endif
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