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/*
* dmabuf_container.c
*
* Copyright 2018 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "dmabuf-container"
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <string.h>
#include <sys/ioctl.h>
#include <log/log.h>
#include <hardware/exynos/ion.h>
#include <hardware/exynos/dmabuf_container.h>
struct dma_buf_merge {
int *dma_bufs;
int32_t count;
int32_t dmabuf_container;
uint32_t reserved[2];
};
#define DMA_BUF_BASE 'b'
#define DMA_BUF_IOCTL_MERGE _IOWR(DMA_BUF_BASE, 13, struct dma_buf_merge)
#define DMA_BUF_IOCTL_CONTAINER_SET_MASK _IOW(DMA_BUF_BASE, 14, __u32)
#define DMA_BUF_IOCTL_CONTAINER_GET_MASK _IOR(DMA_BUF_BASE, 14, __u32)
int dma_buf_merge(int base_fd, int src_fds[], int src_count)
{
struct dma_buf_merge data = {
.dma_bufs = src_fds,
.count = src_count,
};
if (src_count > MAX_BUFCON_SRC_BUFS) {
ALOGE("too many source buffers");
return -1;
}
if (ioctl(base_fd, DMA_BUF_IOCTL_MERGE, &data) < 0) {
ALOGE("failed to merge %d dma-bufs: %s", src_count, strerror(errno));
return -1;
}
return data.dmabuf_container;
}
int dmabuf_container_set_mask(int dmabuf, uint32_t mask)
{
if (ioctl(dmabuf, DMA_BUF_IOCTL_CONTAINER_SET_MASK, &mask) < 0) {
ALOGE("Failed to configure dma-buf container mask %#x: %s", mask, strerror(errno));
return -1;
}
return 0;
}
int dmabuf_container_get_mask(int dmabuf, uint32_t *mask)
{
if (ioctl(dmabuf, DMA_BUF_IOCTL_CONTAINER_GET_MASK, mask) < 0) {
ALOGE("Failed to retrieve dma-buf container mask: %s", strerror(errno));
return -1;
}
return 0;
}
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