HelenOS sources

root/uspace/lib/c/generic/device/pio_window.c

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DEFINITIONS

This source file includes following definitions.
  1. pio_window_get

/*
 * Copyright (c) 2013 Jakub Jermar
 * 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 libc
 * @{
 */
/** @file
 */

#include <device/pio_window.h>
#include <errno.h>
#include <async.h>

errno_t pio_window_get(async_sess_t *sess, pio_window_t *pio_win)
{
        errno_t rc;

        async_exch_t *exch = async_exchange_begin(sess);
        if (!exch)
                return ENOMEM;

        rc = async_req_1_0(exch, DEV_IFACE_ID(PIO_WINDOW_DEV_IFACE),
            PIO_WINDOW_GET);
        if (rc != EOK) {
                async_exchange_end(exch);
                return rc;
        }

        rc = async_data_read_start(exch, pio_win, sizeof(*pio_win));
        async_exchange_end(exch);

        return rc;
}

/** @}
 */

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