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Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

dma-heap.h (1397B)

    

  1. /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  2. /*
  3.  * DMABUF Heaps Userspace API
  4.  *
  5.  * Copyright (C) 2011 Google, Inc.
  6.  * Copyright (C) 2019 Linaro Ltd.
  7.  */
  8. #ifndef _LINUX_DMABUF_POOL_H
  9. #define _LINUX_DMABUF_POOL_H
  11. #include <linux/ioctl.h>
  12. #include <linux/types.h>
  14. /**
  15.  * DOC: DMABUF Heaps Userspace API
  16.  */
  18. /* Valid FD_FLAGS are O_CLOEXEC, O_RDONLY, O_WRONLY, O_RDWR */
  19. #define DMA_HEAP_VALID_FD_FLAGS (O_CLOEXEC | O_ACCMODE)
  21. /* Currently no heap flags */
  22. #define DMA_HEAP_VALID_HEAP_FLAGS (0ULL)
  24. /**
  25.  * struct dma_heap_allocation_data - metadata passed from userspace for
  26.  *                                      allocations
  27.  * @len:		size of the allocation
  28.  * @fd:			will be populated with a fd which provides the
  29.  *			handle to the allocated dma-buf
  30.  * @fd_flags:		file descriptor flags used when allocating
  31.  * @heap_flags:		flags passed to heap
  32.  *
  33.  * Provided by userspace as an argument to the ioctl
  34.  */
  35. struct dma_heap_allocation_data {
  36. 	__u64 len;
  37. 	__u32 fd;
  38. 	__u32 fd_flags;
  39. 	__u64 heap_flags;
  40. };
  42. #define DMA_HEAP_IOC_MAGIC		'H'
  44. /**
  45.  * DOC: DMA_HEAP_IOCTL_ALLOC - allocate memory from pool
  46.  *
  47.  * Takes a dma_heap_allocation_data struct and returns it with the fd field
  48.  * populated with the dmabuf handle of the allocation.
  49.  */
  50. #define DMA_HEAP_IOCTL_ALLOC	_IOWR(DMA_HEAP_IOC_MAGIC, 0x0,\
  51. 				      struct dma_heap_allocation_data)
  53. #endif /* _LINUX_DMABUF_POOL_H */