/* $NetBSD: ehci_hollywood.c,v 1.4 2024/10/13 16:21:37 jmcneill Exp $ */

/*-
* Copyright (c) 2024 Jared McNeill <[email protected]>
* 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.
*
* 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.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ehci_hollywood.c,v 1.4 2024/10/13 16:21:37 jmcneill Exp $");

#include <sys/param.h>
#include <sys/bus.h>
#include <sys/device.h>
#include <sys/systm.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/ehcireg.h>
#include <dev/usb/ehcivar.h>

#include <machine/wii.h>
#include "hollywood.h"

#define USB_CHICKENBITS         0x0d0400cc
#define  EHCI_INTR_ENABLE       0x00008000

extern struct powerpc_bus_dma_tag wii_mem2_bus_dma_tag;

static int      ehci_hollywood_match(device_t, cfdata_t, void *);
static void     ehci_hollywood_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(ehci_hollywood, sizeof(struct ehci_softc),
       ehci_hollywood_match, ehci_hollywood_attach, NULL, NULL);

static int
ehci_hollywood_match(device_t parent, cfdata_t cf, void *aux)
{
       return 1;
}

static void
ehci_hollywood_attach(device_t parent, device_t self, void *aux)
{
       struct hollywood_attach_args *haa = aux;
       struct ehci_softc *sc = device_private(self);
       int error;

       sc->sc_dev = self;
       sc->sc_bus.ub_hcpriv = sc;
       sc->sc_bus.ub_dmatag = &wii_mem2_bus_dma_tag;
       sc->sc_bus.ub_revision = USBREV_2_0;
       sc->sc_flags = EHCIF_32BIT_ACCESS;
       sc->sc_ncomp = 2;
       sc->sc_size = 0x100;
       sc->iot = haa->haa_bst;
       if (bus_space_map(sc->iot, haa->haa_addr, sc->sc_size, 0, &sc->ioh)) {
               aprint_error(": couldn't map registers\n");
               return;
       }

       aprint_naive("\n");
       aprint_normal(": EHCI\n");

       hollywood_claim_device(self, IOPEHCEN);

       sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH);
       EOWRITE4(sc, EHCI_USBINTR, 0);

       out32(USB_CHICKENBITS, in32(USB_CHICKENBITS) | EHCI_INTR_ENABLE);

       hollywood_intr_establish(haa->haa_irq, IPL_USB, ehci_intr, sc,
           device_xname(self));

       error = ehci_init(sc);
       if (error != 0) {
               aprint_error_dev(self, "init failed, error = %d\n", error);
               return;
       }

       sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint,
           CFARGS_NONE);
}