/* $NetBSD: ohci.c,v 1.5 2002/10/02 15:52:24 thorpej Exp $ */

/*
 * Copyright 2002 Wasabi Systems, Inc.
 * All rights reserved.
 *
 * Written by Simon Burge for Wasabi Systems, Inc.
 *
 * 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 for the NetBSD Project by
 *      Wasabi Systems, Inc.
 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
 *    or promote products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
 * 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/param.h>
#include <sys/systm.h>
#include <sys/device.h>

#include <machine/bus.h>

#include <mips/alchemy/include/aureg.h>
#include <mips/alchemy/include/aubusvar.h>

#include <evbmips/alchemy/pb1000reg.h>
#include <evbmips/alchemy/pb1000_obiovar.h>

#include <dev/usb/usb.h>   
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdivar.h>
#include <dev/usb/usb_mem.h>

#include <dev/usb/ohcireg.h>
#include <dev/usb/ohcivar.h>


static int	ohci_aubus_match(struct device *, struct cfdata *, void *);
static void	ohci_aubus_attach(struct device *, struct device *, void *);

struct  ohci_aubus_softc {
	struct device sc_dev;			/* device information */
	ohci_softc_t	sc;
	bus_space_tag_t	sc_st;			/* bus space tag */
	bus_space_handle_t sc_ohci_aubus_sh;	/* USBH space handle */
	void		*sc_ih;			/* interrupt vector */
};

CFATTACH_DECL(ohci_aubus, sizeof (struct device),
    ohci_aubus_match, ohci_aubus_attach, NULL, NULL);

int
ohci_aubus_match(struct device *parent, struct cfdata *match, void *aux)
{
	struct aubus_attach_args *aa = aux;

	if (strcmp(aa->aa_name, match->cf_name) == 0)
		return (1);

	return (0);
}

/*
 * mips/alchemy/include/aureg.h:
 * USBH_BASE
 * USBH_ENABLE
 *   UE_RD
 *   UE_CE
 *   UE_E
 *   UE_C
 *   UE_BE
 * USBH_SIZE
 */

void
ohci_aubus_attach(struct device *parent, struct device *self, void *aux)
{
	struct ohci_aubus_softc *sc = (struct ohci_aubus_softc *)self;
	struct aubus_attach_args *aa = aux;
	usbd_status r;
	uint32_t x;
	char *devname = sc->sc.sc_bus.bdev.dv_xname;

	sc->sc_st = aa->aa_st;
	r = 0;

	if (bus_space_map(sc->sc_st, aa->aa_addrs[0], USBH_SIZE, 0,
	    &sc->sc_ohci_aubus_sh)) {
		printf("%s: Unable to map USBH registers\n",
			sc->sc_dev.dv_xname);
		return;
	}
	/*
	 * Enable the USB Host controller here.
	 * As per 7.2 in the Au1500 manual:
	 *
	 *  (1) Set CE bit to enable clocks.
	 *  (2) Set E to enable OHCI, C for coherency.
	 *  (3) Clear HCFS in OHCI_CONTROL.
	 *  (4) Wait for RD bit to be set.
	 */
	x = bus_space_read_4(sc->sc_st, sc->sc_ohci_aubus_sh, 0);
	bus_space_write_4(sc->sc_st, sc->sc_ohci_aubus_sh, 0, (x|UE_CE));
	x |= (UE_CE|UE_E|UE_C);
	bus_space_write_4(sc->sc_st, sc->sc_ohci_aubus_sh, 0, x);
	bus_space_write_4(sc->sc_st, sc->sc_ohci_aubus_sh, OHCI_CONTROL, 0);
	for (x = 10000; x; x--) {
		if (bus_space_read_4(sc->sc_st, sc->sc_ohci_aubus_sh, 0)&UE_RD)
			break;
		delay(100);
	}
printf("%x\n", x);
	if (x)
{
		printf("rd set. Calling ohci_init\n");
		r = ohci_init(&sc->sc);
		printf("out of ohci_init. %x\n", r);
}
	if (r != USBD_NORMAL_COMPLETION) {
		printf("%s: init failed, error=%d\n", devname, r);
		return;
	}

	printf(": Au1X00 OHCI\n");
}