xref: /src/sys/dev/podulebus/dtide.c

/* $NetBSD: dtide.c,v 1.3 2001/11/13 07:23:15 lukem Exp $ */

/*-
 * Copyright (c) 2000, 2001 Ben Harris
 * All rights reserved.
 *
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */
/* This file is part of NetBSD/arm26 -- a port of NetBSD to ARM2/3 machines. */
/*
 * dtide.c - Driver for the D.T. Software IDE interface.
 */

#include <sys/cdefs.h>
__RCSID("$NetBSD: dtide.c,v 1.3 2001/11/13 07:23:15 lukem Exp $");

#include <sys/param.h>

#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/systm.h>

#include <machine/bus.h>

#include <dev/podulebus/podulebus.h>
#include <dev/podulebus/podules.h>
#include <dev/podulebus/dtidereg.h>

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

struct dtide_softc {
	struct wdc_softc sc_wdc;
	struct channel_softc *sc_chp[DTIDE_NCHANNELS];/* pointers to sc_chan */
	struct channel_softc sc_chan[DTIDE_NCHANNELS];
	struct channel_queue sc_chq[DTIDE_NCHANNELS];
	bus_space_tag_t		sc_magict;
	bus_space_handle_t	sc_magich;
};

static int dtide_match(struct device *, struct cfdata *, void *);
static void dtide_attach(struct device *, struct device *, void *);

struct cfattach dtide_ca = {
	sizeof(struct dtide_softc), dtide_match, dtide_attach
};

static const int dtide_cmdoffsets[] = { DTIDE_CMDBASE0, DTIDE_CMDBASE1 };
static const int dtide_ctloffsets[] = { DTIDE_CTLBASE0, DTIDE_CTLBASE1 };

static int
dtide_match(struct device *parent, struct cfdata *cf, void *aux)
{
	struct podulebus_attach_args *pa = aux;

	return pa->pa_product == PODULE_DTSOFT_IDE;
}

static void
dtide_attach(struct device *parent, struct device *self, void *aux)
{
	struct podulebus_attach_args *pa = aux;
	struct dtide_softc *sc = (void *)self;
	int i;
	bus_space_tag_t bst;

	sc->sc_wdc.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_NOIRQ;
	sc->sc_wdc.PIO_cap = 0; /* XXX correct? */
	sc->sc_wdc.DMA_cap = 0; /* XXX correct? */
	sc->sc_wdc.UDMA_cap = 0;
	sc->sc_wdc.nchannels = DTIDE_NCHANNELS;
	sc->sc_wdc.channels = sc->sc_chp;
	sc->sc_magict = pa->pa_fast_t;
	bus_space_map(pa->pa_fast_t, pa->pa_fast_base + DTIDE_MAGICBASE, 0, 1,
	    &sc->sc_magich);
	podulebus_shift_tag(pa->pa_fast_t, DTIDE_REGSHIFT, &bst);
	printf("\n");
	for (i = 0; i < DTIDE_NCHANNELS; i++) {
		sc->sc_chp[i] = &sc->sc_chan[i];
		sc->sc_chan[i].channel = i;
		sc->sc_chan[i].wdc = &sc->sc_wdc;
		sc->sc_chan[i].cmd_iot = bst;
		sc->sc_chan[i].ctl_iot = bst;
		sc->sc_chan[i].ch_queue = &sc->sc_chq[i];
		bus_space_map(pa->pa_fast_t,
		    pa->pa_fast_base + dtide_cmdoffsets[i], 0, 8,
		    &sc->sc_chan[i].cmd_ioh);
		bus_space_map(pa->pa_fast_t,
		    pa->pa_fast_base + dtide_ctloffsets[i], 0, 8,
		    &sc->sc_chan[i].ctl_ioh);
		wdcattach(&sc->sc_chan[i]);
	}
}