source: mainline/uspace/drv/uhci-rhd/main.c@ f20f9e2

/*
 * 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 <ddf/driver.h>
#include <devman.h>
#include <device/hw_res.h>
#include <usb_iface.h>
#include <usb/ddfiface.h>

#include <errno.h>

#include <usb/debug.h>

#include "root_hub.h"

#define NAME "uhci-rhd"
static int hc_get_my_registers(ddf_dev_t *dev,
    uintptr_t *io_reg_address, size_t *io_reg_size);

static int usb_iface_get_hc_handle(ddf_fun_t *fun, devman_handle_t *handle)
{
        assert(fun);
        assert(fun->driver_data);
        assert(handle);

        *handle = ((uhci_root_hub_t*)fun->driver_data)->hc_handle;

        return EOK;
}

static usb_iface_t uhci_rh_usb_iface = {
        .get_hc_handle = usb_iface_get_hc_handle,
        .get_address = usb_iface_get_address_hub_impl
};

static ddf_dev_ops_t uhci_rh_ops = {
        .interfaces[USB_DEV_IFACE] = &uhci_rh_usb_iface,
};

static int uhci_rh_add_device(ddf_dev_t *device)
{
        if (!device)
                return ENOTSUP;

        usb_log_debug2("%s called device %d\n", __FUNCTION__, device->handle);

        //device->ops = &uhci_rh_ops;
        (void) uhci_rh_ops;

        uhci_root_hub_t *rh = malloc(sizeof(uhci_root_hub_t));
        if (!rh) {
                usb_log_error("Failed to allocate memory for driver instance.\n");
                return ENOMEM;
        }

        uintptr_t io_regs = 0;
        size_t io_size = 0;

        int ret = hc_get_my_registers(device, &io_regs, &io_size);
        assert(ret == EOK);

        /* TODO: verify values from hc */
        usb_log_info("I/O regs at 0x%X (size %zu).\n", io_regs, io_size);
        ret = uhci_root_hub_init(rh, (void*)io_regs, io_size, device);
        if (ret != EOK) {
                usb_log_error("Failed(%d) to initialize driver instance.\n", ret);
                free(rh);
                return ret;
        }

        device->driver_data = rh;
        usb_log_info("Sucessfully initialized driver instance for device:%d.\n",
            device->handle);
        return EOK;
}

static driver_ops_t uhci_rh_driver_ops = {
        .add_device = uhci_rh_add_device,
};

static driver_t uhci_rh_driver = {
        .name = NAME,
        .driver_ops = &uhci_rh_driver_ops
};
/*----------------------------------------------------------------------------*/
int main(int argc, char *argv[])
{
        usb_log_enable(USB_LOG_LEVEL_INFO, NAME);
        return ddf_driver_main(&uhci_rh_driver);
}
/*----------------------------------------------------------------------------*/
int hc_get_my_registers(ddf_dev_t *dev,
    uintptr_t *io_reg_address, size_t *io_reg_size)
{
        assert(dev != NULL);

        int parent_phone = devman_parent_device_connect(dev->handle,
            IPC_FLAG_BLOCKING);
        if (parent_phone < 0) {
                return parent_phone;
        }

        int rc;

        hw_resource_list_t hw_resources;
        rc = hw_res_get_resource_list(parent_phone, &hw_resources);
        if (rc != EOK) {
                goto leave;
        }

        uintptr_t io_address = 0;
        size_t io_size = 0;
        bool io_found = false;

        size_t i;
        for (i = 0; i < hw_resources.count; i++) {
                hw_resource_t *res = &hw_resources.resources[i];
                switch (res->type) {
                        case IO_RANGE:
                                io_address = (uintptr_t)
                                    res->res.io_range.address;
                                io_size = res->res.io_range.size;
                                io_found = true;
                                break;
                        default:
                                break;
                }
        }

        if (!io_found) {
                rc = ENOENT;
                goto leave;
        }

        if (io_reg_address != NULL) {
                *io_reg_address = io_address;
        }
        if (io_reg_size != NULL) {
                *io_reg_size = io_size;
        }
        rc = EOK;
leave:
        async_hangup(parent_phone);

        return rc;
}
/**
 * @}
 */