hw_res.c

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/*
 * Copyright (c) 2010 Lenka Trochtova
 * 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.
 */

#include <device/hw_res.h>
#include <errno.h>
#include <async.h>
#include <malloc.h>

int hw_res_get_resource_list(int dev_phone, hw_resource_list_t *hw_resources)
{
        sysarg_t count = 0;

        int rc = async_req_1_1(dev_phone, DEV_IFACE_ID(HW_RES_DEV_IFACE),
            HW_RES_GET_RESOURCE_LIST, &count);

        hw_resources->count = count;
        if (rc != EOK)
                return rc;
        
        size_t size = count * sizeof(hw_resource_t);
        hw_resources->resources = (hw_resource_t *)malloc(size);
        if (!hw_resources->resources)
                return ENOMEM;
        
        rc = async_data_read_start(dev_phone, hw_resources->resources, size);
        if (rc != EOK) {
                free(hw_resources->resources);
                hw_resources->resources = NULL;
                return rc;
        }
        
        return EOK;
}

bool hw_res_enable_interrupt(int dev_phone)
{
        int rc = async_req_1_0(dev_phone, DEV_IFACE_ID(HW_RES_DEV_IFACE),
            HW_RES_ENABLE_INTERRUPT);

        return rc == EOK;
}

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