/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 1998 The NetBSD Foundation, Inc.
 * Copyright (c) 2010, Aleksandr Rybalko <ray@ddteam.net>
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Lennart Augustsson (augustss@carlstedt.se) at
 * Carlstedt Research & Technology.
 *
 * 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>
/*
 * USB Open Host Controller driver.
 *
 * OHCI spec: http://www.intel.com/design/usb/ohci11d.pdf
 */

/* The low level controller code for OHCI has been split into
 * SIBA probes and OHCI specific code. This was done to facilitate the
 * sharing of code between *BSD's
 */

#include <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/rman.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/linker_set.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.h>

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

#include <dev/usb/usb_core.h>
#include <dev/usb/usb_busdma.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/usb_util.h>

#include <dev/usb/usb_controller.h>
#include <dev/usb/usb_bus.h>
#include <dev/usb/controller/ohci.h>
#include <dev/usb/controller/ohcireg.h>

static device_probe_t bhnd_ohci_probe;
static device_attach_t bhnd_ohci_attach;
static device_detach_t bhnd_ohci_detach;

static int
bhnd_ohci_probe(device_t self)
{
	device_set_desc(self, "Broadcom OHCI");
	return (0);
}

static int
bhnd_ohci_attach(device_t self)
{
	ohci_softc_t	*sc;
	int		 rid;
	int		 err;

	sc = device_get_softc(self);
	/* initialise some bus fields */
	sc->sc_bus.parent = self;
	sc->sc_bus.devices = sc->sc_devices;
	sc->sc_bus.devices_max = OHCI_MAX_DEVICES;
	sc->sc_bus.dma_bits = 32;

	/* get all DMA memory */
	if (usb_bus_mem_alloc_all(&sc->sc_bus, USB_GET_DMA_TAG(self),
	    &ohci_iterate_hw_softc)) {
		return (ENOMEM);
	}
	sc->sc_dev = self;

	rid = 0;
	sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
	    RF_ACTIVE);
	if (!sc->sc_io_res) {
		device_printf(self, "Could not map memory\n");
		goto error;
	}
	sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
	sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
	sc->sc_io_size = rman_get_size(sc->sc_io_res);

	rid = 0;
	sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
	    RF_SHAREABLE | RF_ACTIVE);
	if (sc->sc_irq_res == NULL) {
		device_printf(self, "Could not allocate irq\n");
		goto error;
	}
	sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
	if (!sc->sc_bus.bdev) {
		device_printf(self, "Could not add USB device\n");
		goto error;
	}
	device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);

	strlcpy(sc->sc_vendor, "Broadcom", sizeof(sc->sc_vendor));

	err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
	    NULL, (driver_intr_t *)ohci_interrupt, sc, &sc->sc_intr_hdl);

	if (err) {
		device_printf(self, "Could not setup irq, %d\n", err);
		sc->sc_intr_hdl = NULL;
		goto error;
	}
	err = ohci_init(sc);
	if (!err) {
		err = device_probe_and_attach(sc->sc_bus.bdev);
	}
	if (err) {
		device_printf(self, "USB init failed\n");
		goto error;
	}
	return (0);

error:
	bhnd_ohci_detach(self);
	return (ENXIO);
}

static int
bhnd_ohci_detach(device_t self)
{
	ohci_softc_t	*sc;

	sc = device_get_softc(self);

	/* during module unload there are lots of children leftover */
	device_delete_children(self);

	if (sc->sc_irq_res && sc->sc_intr_hdl) {
		/*
		 * only call ohci_detach() after ohci_init()
		 */
		ohci_detach(sc);

		int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);

		if (err) {
			/* XXX or should we panic? */
			device_printf(self, "Could not tear down irq, %d\n",
			    err);
		}
		sc->sc_intr_hdl = NULL;
	}
	if (sc->sc_irq_res) {
		bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res);
		sc->sc_irq_res = NULL;
	}
	if (sc->sc_io_res) {
		bus_release_resource(self, SYS_RES_MEMORY, 0,
		    sc->sc_io_res);
		sc->sc_io_res = NULL;
	}
	usb_bus_mem_free_all(&sc->sc_bus, &ohci_iterate_hw_softc);

	return (0);
}

static device_method_t bhnd_ohci_methods[] = {
	/* Device interface */
	DEVMETHOD(device_probe,		bhnd_ohci_probe),
	DEVMETHOD(device_attach,	bhnd_ohci_attach),
	DEVMETHOD(device_detach,	bhnd_ohci_detach),
	DEVMETHOD(device_suspend,	bus_generic_suspend),
	DEVMETHOD(device_resume,	bus_generic_resume),
	DEVMETHOD(device_shutdown,	bus_generic_shutdown),

	DEVMETHOD_END
};

static driver_t ohci_driver = {
	.name = "ohci",
	.methods = bhnd_ohci_methods,
	.size = sizeof(struct ohci_softc),
};

DRIVER_MODULE(ohci, bhnd_usb, ohci_driver, 0, 0);
MODULE_DEPEND(ohci, usb, 1, 1, 1);