/* $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");
}