xref: /src/sys/arch/amiga/dev/wdc_acafh.c

/*	$NetBSD: wdc_acafh.c,v 1.1 2013/12/22 02:21:51 rkujawa Exp $ */

/*-
 * Copyright (c) 2000, 2003, 2013 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Radoslaw Kujawa.
 *
 * 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.
 *
 * 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: wdc_acafh.c,v 1.1 2013/12/22 02:21:51 rkujawa Exp $");

#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <sys/bus.h>

#include <machine/cpu.h>
#include <machine/intr.h>
#include <sys/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 <amiga/dev/acafhvar.h>

#include <dev/ata/atavar.h>
#include <dev/ic/wdcvar.h>

struct wdc_acafh_softc {
	struct wdc_softc sc_wdcdev;
	struct	ata_channel *sc_chanlist[1];
	struct  ata_channel sc_channel;
	struct	ata_queue sc_chqueue;
	struct wdc_regs sc_wdc_regs;
	struct isr sc_isr;
	volatile u_char *sc_intreg;
	struct bus_space_tag cmd_iot;
	struct bus_space_tag ctl_iot;
	struct acafh_softc *aca_sc;
};

int	wdc_acafh_match(device_t, cfdata_t, void *);
void	wdc_acafh_attach(device_t, device_t, void *);
int	wdc_acafh_intr(void *);

CFATTACH_DECL_NEW(wdc_acafh, sizeof(struct wdc_acafh_softc),
    wdc_acafh_match, wdc_acafh_attach, NULL, NULL);

int
wdc_acafh_match(device_t parent, cfdata_t cfp, void *aux)
{
	struct acafhbus_attach_args *aap = aux;

	if (strcmp(aap->aaa_name, "wdc_acafh") != 0)
		return(0);
	return 1;
}

void
wdc_acafh_attach(device_t parent, device_t self, void *aux)
{
	struct wdc_acafh_softc *sc = device_private(self);
	struct wdc_regs *wdr;
	int i;

	aprint_normal("\n");
	gayle_init();

	sc->aca_sc = device_private(parent);

	sc->sc_wdcdev.sc_atac.atac_dev = self;
	sc->sc_wdcdev.regs = wdr = &sc->sc_wdc_regs;

	sc->cmd_iot.base = (u_long) ztwomap(0xda0000 + 2);
	gayle_init();
	sc->sc_intreg = &gayle.intreq;

	sc->cmd_iot.absm = sc->ctl_iot.absm = &amiga_bus_stride_4swap;
	wdr->cmd_iot = &sc->cmd_iot;
	wdr->ctl_iot = &sc->ctl_iot;

	if (bus_space_map(wdr->cmd_iot, 0, 0x40, 0,
			  &wdr->cmd_baseioh)) {
		aprint_error_dev(self, "couldn't map registers\n");
		return;
	}

	for (i = 0; i < WDC_NREG; i++) {
		if (bus_space_subregion(wdr->cmd_iot,
		    wdr->cmd_baseioh, i, i == 0 ? 4 : 1,
		    &wdr->cmd_iohs[i]) != 0) {

			bus_space_unmap(wdr->cmd_iot,
			    wdr->cmd_baseioh, 0x40);
			aprint_error_dev(self, "couldn't map registers\n");
			return;
		}
	}

	if (bus_space_subregion(wdr->cmd_iot,
	    wdr->cmd_baseioh, 0x406, 1, &wdr->ctl_ioh))
		return;

	sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16;
	sc->sc_wdcdev.sc_atac.atac_pio_cap = 0;
	sc->sc_chanlist[0] = &sc->sc_channel;
	sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist;
	sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
	sc->sc_wdcdev.wdc_maxdrives = 2;
	sc->sc_channel.ch_channel = 0;
	sc->sc_channel.ch_atac = &sc->sc_wdcdev.sc_atac;
	sc->sc_channel.ch_queue = &sc->sc_chqueue;

	wdc_init_shadow_regs(&sc->sc_channel);

	sc->sc_isr.isr_intr = wdc_acafh_intr;
	sc->sc_isr.isr_arg = sc;
	sc->sc_isr.isr_ipl = 2;
	add_isr (&sc->sc_isr);

	gayle.intena |= GAYLE_INT_IDE;

	wdcattach(&sc->sc_channel);
}

int
wdc_acafh_intr(void *arg)
{
	struct wdc_acafh_softc *sc = (struct wdc_acafh_softc *)arg;
	int ret = 0;
	u_char intreq = *sc->sc_intreg;

	if (intreq & GAYLE_INT_IDE) {
/*
		if (acafh_cf_intr_status(sc->aca_sc, 1) == 1)
			aprint_normal_dev(sc->aca_sc->sc_dev, "intr at slot 1\n");
		if (acafh_cf_intr_status(sc->aca_sc, 0) == 1)
			aprint_normal_dev(sc->aca_sc->sc_dev, "intr at slot 0\n");
*/
		ret = wdcintr(&sc->sc_channel);
		gayle.intreq = 0x7c | (intreq & 0x03);
	}

	return ret;
}