/*
 * Copyright (c) 2011 Vojtech Horky, Jan Vesely
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * 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.
 */
/** @addtogroup usb
 * @{
 */
/** @file
 * @brief UHCI driver
 */
#include <driver.h>
#include <usb_iface.h>

#include <errno.h>

#include <usb/debug.h>

#include "iface.h"
#include "pci.h"
#include "root_hub.h"
#include "uhci.h"

#define NAME "uhci-hcd"

static int usb_iface_get_hc_handle(device_t *dev, devman_handle_t *handle)
{
	/* This shall be called only for the UHCI itself. */
	assert(dev->parent == NULL);

	*handle = dev->handle;
	return EOK;
}

static usb_iface_t hc_usb_iface = {
	.get_hc_handle = usb_iface_get_hc_handle
};

static device_ops_t uhci_ops = {
	.interfaces[USB_DEV_IFACE] = &hc_usb_iface,
	.interfaces[USBHC_DEV_IFACE] = &uhci_iface
};

static int uhci_add_device(device_t *device)
{
	assert(device);

	usb_log_info("uhci_add_device() called\n");
	device->ops = &uhci_ops;

	uintptr_t io_reg_base;
	size_t io_reg_size;
	int irq;

	int rc = pci_get_my_registers(device,
	    &io_reg_base, &io_reg_size, &irq);

	if (rc != EOK) {
		usb_log_error("Failed(%d) to get I/O registers addresses for device:.\n",
		    rc, device->handle);
		return rc;
	}

	usb_log_info("I/O regs at 0x%X (size %zu), IRQ %d.\n",
	    io_reg_base, io_reg_size, irq);

	uhci_t *uhci_hc = malloc(sizeof(uhci_t));
	if (!uhci_hc) {
		usb_log_error("Failed to allocaete memory for uhci hcd driver.\n");
		return ENOMEM;
	}

	int ret = uhci_init(uhci_hc, (void*)io_reg_base, io_reg_size);
	if (ret != EOK) {
		usb_log_error("Failed to init uhci-hcd.\n");
		return ret;
	}
	device_t *rh;
	ret = setup_root_hub(&rh, device);

	if (ret != EOK) {
		usb_log_error("Failed to setup uhci root hub.\n");
		/* TODO: destroy uhci here */
		return ret;
	}

	ret = child_device_register(rh, device);
	if (ret != EOK) {
		usb_log_error("Failed to register root hub.\n");
		/* TODO: destroy uhci here */
		return ret;
	}

	device->driver_data = uhci_hc;

	return EOK;
}

static driver_ops_t uhci_driver_ops = {
	.add_device = uhci_add_device,
};

static driver_t uhci_driver = {
	.name = NAME,
	.driver_ops = &uhci_driver_ops
};

int main(int argc, char *argv[])
{
	/*
	 * Do some global initializations.
	 */
	sleep(5);
	usb_log_enable(USB_LOG_LEVEL_INFO, NAME);

	return driver_main(&uhci_driver);
}
/**
 * @}
 */