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