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author | Alistair Delva <adelva@google.com> | 2020-04-27 08:11:53 -0700 |
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committer | Alistair Delva <adelva@google.com> | 2020-04-27 08:11:55 -0700 |
commit | a2e4f6daae9bb4cf7b26c6ed4b859830cf18a812 (patch) | |
tree | 04559244bad106b2cd2015c3621632f271de4714 /gralloc/dma-heap.h | |
parent | c3571ac08c205983f9014a5808cbd2a98aea8f84 (diff) | |
download | hikey-a2e4f6daae9bb4cf7b26c6ed4b859830cf18a812.tar.gz |
hikey: Add dma-heap.h to fix build
Copy this file from the hikey960 gralloc for now. This should be added
to kernel-headers for supplementary UAPI in the future.
Bug: 154966466
Change-Id: Ib8e276939753c2def3812b616a615daef76d28c1
Diffstat (limited to 'gralloc/dma-heap.h')
-rw-r--r-- | gralloc/dma-heap.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/gralloc/dma-heap.h b/gralloc/dma-heap.h new file mode 100644 index 00000000..6f84fa08 --- /dev/null +++ b/gralloc/dma-heap.h @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * DMABUF Heaps Userspace API + * + * Copyright (C) 2011 Google, Inc. + * Copyright (C) 2019 Linaro Ltd. + */ +#ifndef _UAPI_LINUX_DMABUF_POOL_H +#define _UAPI_LINUX_DMABUF_POOL_H + +#include <linux/ioctl.h> +#include <linux/types.h> + +/** + * DOC: DMABUF Heaps Userspace API + */ + +/* Valid FD_FLAGS are O_CLOEXEC, O_RDONLY, O_WRONLY, O_RDWR */ +#define DMA_HEAP_VALID_FD_FLAGS (O_CLOEXEC | O_ACCMODE) + +/* Currently no heap flags */ +#define DMA_HEAP_VALID_HEAP_FLAGS (0) + +/** + * struct dma_heap_allocation_data - metadata passed from userspace for + * allocations + * @len: size of the allocation + * @fd: will be populated with a fd which provides the + * handle to the allocated dma-buf + * @fd_flags: file descriptor flags used when allocating + * @heap_flags: flags passed to heap + * + * Provided by userspace as an argument to the ioctl + */ +struct dma_heap_allocation_data { + __u64 len; + __u32 fd; + __u32 fd_flags; + __u64 heap_flags; +}; + +#define DMA_HEAP_IOC_MAGIC 'H' + +/** + * DOC: DMA_HEAP_IOCTL_ALLOC - allocate memory from pool + * + * Takes a dma_heap_allocation_data struct and returns it with the fd field + * populated with the dmabuf handle of the allocation. + */ +#define DMA_HEAP_IOCTL_ALLOC _IOWR(DMA_HEAP_IOC_MAGIC, 0x0,\ + struct dma_heap_allocation_data) + +#endif /* _UAPI_LINUX_DMABUF_POOL_H */ |