rpmsg_queue.h

/*
 * Copyright (c) 2014, Mentor Graphics Corporation
 * Copyright (c) 2015 Xilinx, Inc.
 * Copyright (c) 2016 Freescale Semiconductor, Inc.
 * Copyright 2016 NXP
 * All rights reserved.
 *
 * 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.
 * 3. Neither the name of the copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
 */

#ifndef _RPMSG_QUEUE_H
#define _RPMSG_QUEUE_H

#include "rpmsg_lite.h"


typedef void *rpmsg_queue_handle;

/* RL_API_HAS_ZEROCOPY has to be enabled for RPMsg Queue to work */
#if defined(RL_API_HAS_ZEROCOPY) && (RL_API_HAS_ZEROCOPY == 1)

/*******************************************************************************
 * API
 ******************************************************************************/

/* Exported API functions */

#if defined(__cplusplus)
extern "C" {
#endif

int rpmsg_queue_rx_cb(void *payload, int payload_len, unsigned long src, void *priv);

rpmsg_queue_handle rpmsg_queue_create(struct rpmsg_lite_instance *rpmsg_lite_dev);

int rpmsg_queue_destroy(struct rpmsg_lite_instance *rpmsg_lite_dev, rpmsg_queue_handle q);

int rpmsg_queue_recv(struct rpmsg_lite_instance *rpmsg_lite_dev,
                     rpmsg_queue_handle q,
                     unsigned long *src,
                     char *data,
                     int maxlen,
                     int *len,
                     unsigned long timeout);

int rpmsg_queue_recv_nocopy(struct rpmsg_lite_instance *rpmsg_lite_dev,
                            rpmsg_queue_handle q,
                            unsigned long *src,
                            char **data,
                            int *len,
                            unsigned long timeout);

int rpmsg_queue_nocopy_free(struct rpmsg_lite_instance *rpmsg_lite_dev, void *data);

int rpmsg_queue_get_current_size(rpmsg_queue_handle q);


#if defined(__cplusplus)
}
#endif

#endif /* RL_API_HAS_ZEROCOPY */

#endif /* _RPMSG_QUEUE_H */