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77 lines
2.5 KiB
C
77 lines
2.5 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
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/* See the end of this file for copyright, licensing, and warranty information. */
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#include <ardix/device.h>
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#include <ardix/dma.h>
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#include <ardix/kent.h>
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#include <ardix/malloc.h>
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#include <ardix/types.h>
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#include <ardix/util.h>
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#include <stddef.h>
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static void dmabuf_destroy(struct kent *kent)
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{
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struct dmabuf *buf = container_of(kent, struct dmabuf, kent);
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free(buf);
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}
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static struct kent_ops dma_kent_ops = {
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.destroy = &dmabuf_destroy,
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};
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struct dmabuf *dmabuf_create(struct device *dev, size_t len)
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{
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int err = 0;
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struct dmabuf *buf = malloc(sizeof(*buf) + len);
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if (buf == NULL)
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return NULL;
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buf->kent.operations = &dma_kent_ops;
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err = kent_init(&dev->kent, &buf->kent);
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if (err != 0) {
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free(buf);
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return NULL;
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}
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buf->len = len;
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return buf;
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}
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void dmabuf_get(struct dmabuf *buf)
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{
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kent_get(&buf->kent);
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}
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void dmabuf_put(struct dmabuf *buf)
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{
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kent_put(&buf->kent);
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}
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/*
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* Copyright (c) 2021 Felix Kopp <sandtler@sandtler.club>
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted
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* provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its contributors may be
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* used to endorse or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
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* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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