/*      $NetBSD: rmixl_ehci.c,v 1.8 2021/08/07 16:18:59 thorpej Exp $   */

/*-
* Copyright (c) 1998, 1999, 2000, 2002, 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Herb Peyerl of Middle Digital 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.
*
* 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: rmixl_ehci.c,v 1.8 2021/08/07 16:18:59 thorpej Exp $");

#include "locators.h"

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

#include <sys/bus.h>

#include <mips/rmi/rmixlreg.h>
#include <mips/rmi/rmixlvar.h>
#include <mips/rmi/rmixl_intr.h>
#include <mips/rmi/rmixl_usbivar.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>


static int      rmixl_ehci_match(device_t, cfdata_t, void *);
static void     rmixl_ehci_attach(device_t, device_t, void *);


CFATTACH_DECL_NEW(rmixl_ehci, sizeof (ehci_softc_t),
   rmixl_ehci_match, rmixl_ehci_attach, NULL, NULL);

int
rmixl_ehci_match(device_t parent, cfdata_t match, void *aux)
{
       struct rmixl_usbi_attach_args *usbi = aux;

       if (usbi->usbi_addr == (RMIXL_IO_DEV_USB_A + RMIXL_USB_HOST_EHCI_BASE))
               return rmixl_probe_4((volatile uint32_t *)
                       RMIXL_IOREG_VADDR(usbi->usbi_addr));

       return 0;
}

void
rmixl_ehci_attach(device_t parent, device_t self, void *aux)
{
       ehci_softc_t * const sc = device_private(self);
       rmixl_usbi_softc_t * const psc = device_private(parent);
       struct rmixl_usbi_attach_args * const usbi = aux;
       void *ih = NULL;
       uint32_t r;

       /* check state of IO_AD9 signal latched in GPIO Reset Config reg */
       r = RMIXL_IOREG_READ(RMIXL_IO_DEV_GPIO + RMIXL_GPIO_RESET_CFG);
       if ((r & RMIXL_GPIO_RESET_CFG_USB_DEV) == 0) {
               aprint_error_dev(self,
                       "IO_AD9 selects Device mode, abort Host attach\n");
               return;
       }

       sc->sc_dev = self;
       sc->sc_bus.ub_hcpriv = sc;
       sc->iot = usbi->usbi_el_bst;
       sc->sc_size = usbi->usbi_size;
       sc->sc_bus.ub_dmatag = usbi->usbi_dmat;
       sc->sc_bus.ub_revision = USBREV_1_0;

       /*
        * Grab the companion OHCI devices from our parent.
        */
       if (psc->sc_ohci_devs[1] != NULL) {
               sc->sc_comps[0] = psc->sc_ohci_devs[0];
               sc->sc_comps[1] = psc->sc_ohci_devs[1];
               sc->sc_ncomp = 2;
       } else {
               sc->sc_comps[0] = psc->sc_ohci_devs[0];
               sc->sc_ncomp = 1;
       }

       if (bus_space_map(sc->iot, usbi->usbi_addr, sc->sc_size, 0, &sc->ioh)) {
               aprint_error_dev(self, "unable to map registers\n");
               return;
       }

       /* get offset to operational regs */
       sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH);

       /* Disable EHCI interrupts */
       EOWRITE4(sc, EHCI_USBINTR, 0);

       /* establish interrupt */
       if (usbi->usbi_intr != RMIXL_USBICF_INTR_DEFAULT) {
               ih = rmixl_usbi_intr_establish(device_private(parent),
                       usbi->usbi_intr, ehci_intr, sc);
               if (ih == NULL)
                       panic("%s: couldn't establish interrupt",
                               device_xname(self));
       }

       int err = ehci_init(sc);
       if (err) {
               aprint_error_dev(self, "init failed, error=%d\n", err);
               if (ih != NULL)
                       rmixl_intr_disestablish(ih);
               return;
       }

       /* Attach USB device */
       sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint, CFARGS_NONE);
}