NetBSD/sys/arch/amiga/dev/wdc_amiga.c

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/* $NetBSD: wdc_amiga.c,v 1.6 2001/04/07 05:09:27 tron Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Michael L. Hitch.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <machine/cpu.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <machine/bswap.h>
#include <amiga/amiga/cia.h>
#include <amiga/amiga/custom.h>
#include <amiga/amiga/device.h>
#include <amiga/amiga/gayle.h>
#include <amiga/dev/zbusvar.h>
#include <dev/ata/atavar.h>
#include <dev/ic/wdcvar.h>
struct wdc_amiga_softc {
struct wdc_softc sc_wdcdev;
struct channel_softc *wdc_chanptr;
struct channel_softc wdc_channel;
struct isr sc_isr;
volatile u_char *sc_intreg;
struct bus_space_tag cmd_iot;
struct bus_space_tag ctl_iot;
char sc_a1200;
};
int wdc_amiga_probe __P((struct device *, struct cfdata *, void *));
void wdc_amiga_attach __P((struct device *, struct device *, void *));
int wdc_amiga_intr __P((void *));
struct cfattach wdc_amiga_ca = {
sizeof(struct wdc_amiga_softc), wdc_amiga_probe, wdc_amiga_attach
};
int
wdc_amiga_probe(parent, cfp, aux)
struct device *parent;
struct cfdata *cfp;
void *aux;
{
if ((!is_a4000() && !is_a1200()) || !matchname(aux, "wdc"))
return(0);
return 1;
}
void
wdc_amiga_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct wdc_amiga_softc *sc = (void *)self;
printf("\n");
if (is_a4000()) {
sc->cmd_iot.base = (u_long)ztwomap(0xdd2020 + 2);
sc->sc_intreg = (u_char *)ztwomap(0xdd2020 + 0x1000);
sc->sc_a1200 = 0;
} else {
sc->cmd_iot.base = (u_long) ztwomap(0xda0000 + 2);
sc->ctl_iot.base = (u_long) ztwomap(0xda4000);
gayle_init();
sc->sc_intreg = &gayle.intreq;
sc->sc_a1200 = 1;
}
sc->cmd_iot.absm = sc->ctl_iot.absm = &amiga_bus_stride_4swap;
sc->wdc_channel.cmd_iot = &sc->cmd_iot;
sc->wdc_channel.ctl_iot = &sc->ctl_iot;
if (bus_space_map(sc->wdc_channel.cmd_iot, 0, 0x40, 0,
&sc->wdc_channel.cmd_ioh)) {
printf("%s: couldn't map registers\n",
sc->sc_wdcdev.sc_dev.dv_xname);
return;
}
if (sc->sc_a1200)
sc->wdc_channel.ctl_ioh = sc->ctl_iot.base;
else if (bus_space_subregion(sc->wdc_channel.cmd_iot,
sc->wdc_channel.cmd_ioh, 0x406, 1, &sc->wdc_channel.ctl_ioh))
return;
sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16;
sc->sc_wdcdev.PIO_cap = 0;
sc->wdc_chanptr = &sc->wdc_channel;
sc->sc_wdcdev.channels = &sc->wdc_chanptr;
sc->sc_wdcdev.nchannels = 1;
sc->wdc_channel.channel = 0;
sc->wdc_channel.wdc = &sc->sc_wdcdev;
sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue),
M_DEVBUF, M_NOWAIT);
if (sc->wdc_channel.ch_queue == NULL) {
printf("%s: can't allocate memory for command queue",
sc->sc_wdcdev.sc_dev.dv_xname);
return;
}
sc->sc_isr.isr_intr = wdc_amiga_intr;
sc->sc_isr.isr_arg = sc;
sc->sc_isr.isr_ipl = 2;
add_isr (&sc->sc_isr);
if (sc->sc_a1200)
gayle.intena |= GAYLE_INT_IDE;
wdcattach(&sc->wdc_channel);
}
int
wdc_amiga_intr(arg)
void *arg;
{
struct wdc_amiga_softc *sc = (struct wdc_amiga_softc *)arg;
u_char intreq = *sc->sc_intreg;
int ret = 0;
if (intreq & GAYLE_INT_IDE) {
if (sc->sc_a1200)
gayle.intreq = 0x7c | (intreq & 0x03);
ret = wdcintr(&sc->wdc_channel);
}
return ret;
}