At long last, the MI wdc glue for the Amiga. Tested on my A4000, but not
on an A1200 yet. Configuration of wdc/atapi in GENERIC is currently commented out to prevent the suprise of an IDE drive changing from sd0 to wd0 (and the first real SCSI drive changing from sd1/sd1 to sd0).
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mhitch
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/* $NetBSD: wdc_amiga.c,v 1.1 2000/02/05 18:46:28 mhitch Exp $ */
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/*-
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* Copyright (c) 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 Michael L. Hitch.
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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/malloc.h>
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#include <sys/device.h>
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#include <machine/cpu.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <machine/bswap.h>
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#include <amiga/amiga/cia.h>
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#include <amiga/amiga/custom.h>
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#include <amiga/amiga/device.h>
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#include <amiga/amiga/gayle.h>
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#include <amiga/dev/zbusvar.h>
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#include <dev/ata/atavar.h>
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#include <dev/ic/wdcvar.h>
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struct wdc_amiga_softc {
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struct wdc_softc sc_wdcdev;
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struct channel_softc *wdc_chanptr;
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struct channel_softc wdc_channel;
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struct isr sc_isr;
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volatile u_char *sc_intreg;
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struct bus_space_tag iot;
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char sc_a1200;
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};
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int wdc_amiga_probe __P((struct device *, struct cfdata *, void *));
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void wdc_amiga_attach __P((struct device *, struct device *, void *));
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int wdc_amiga_intr __P((void *));
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struct cfattach wdc_amiga_ca = {
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sizeof(struct wdc_amiga_softc), wdc_amiga_probe, wdc_amiga_attach
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};
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int
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wdc_amiga_probe(parent, cfp, aux)
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struct device *parent;
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struct cfdata *cfp;
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void *aux;
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{
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if (!(is_a4000() && !is_a1200()) || !matchname(aux, "wdc"))
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return(0);
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return 1;
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}
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void
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wdc_amiga_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_amiga_softc *sc = (void *)self;
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printf("\n");
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if (is_a4000()) {
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sc->iot.base = (u_long)ztwomap(0xdd2020 + 2);
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sc->sc_intreg = (u_char *)ztwomap(0xdd2020 + 0x1000);
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} else {
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sc->iot.base = (u_long)ztwomap(0xda0000 + 2);
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sc->sc_a1200 = 1;
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sc->sc_intreg = &gayle.intreq;
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gayle_init();
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gayle.intena |= GAYLE_INT_IDE;
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}
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sc->iot.absm = &amiga_bus_stride_4swap;
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sc->wdc_channel.cmd_iot = sc->wdc_channel.ctl_iot = &sc->iot;
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if (bus_space_map(sc->wdc_channel.cmd_iot, 0, 0x40, 0,
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&sc->wdc_channel.cmd_ioh)) {
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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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return;
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}
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if (bus_space_subregion(sc->wdc_channel.cmd_iot,
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sc->wdc_channel.cmd_ioh, 0x406, 1, &sc->wdc_channel.ctl_ioh))
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return;
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sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16;
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sc->sc_wdcdev.PIO_cap = 0;
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sc->wdc_chanptr = &sc->wdc_channel;
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sc->sc_wdcdev.channels = &sc->wdc_chanptr;
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sc->sc_wdcdev.nchannels = 1;
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sc->wdc_channel.channel = 0;
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sc->wdc_channel.wdc = &sc->sc_wdcdev;
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sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue),
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M_DEVBUF, M_NOWAIT);
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if (sc->wdc_channel.ch_queue == NULL) {
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printf("%s: can't allocate memory for command queue",
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sc->sc_wdcdev.sc_dev.dv_xname);
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return;
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}
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sc->sc_isr.isr_intr = wdc_amiga_intr;
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sc->sc_isr.isr_arg = sc;
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sc->sc_isr.isr_ipl = 2;
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add_isr (&sc->sc_isr);
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wdcattach(&sc->wdc_channel);
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}
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int
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wdc_amiga_intr(arg)
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void *arg;
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{
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struct wdc_amiga_softc *sc = (struct wdc_amiga_softc *)arg;
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if ((*sc->sc_intreg & 0x80) == 0)
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return 0;
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wdcintr(&sc->wdc_channel);
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if (sc->sc_a1200)
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*sc->sc_intreg = 0x7c | (*sc->sc_intreg & 0x03);
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return(1);
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}
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