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oasis-root

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

buffer.h (985B)

    

  1. /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  2. /* industrial I/O buffer definitions needed both in and out of kernel
  3.  */
  5. #ifndef _IIO_BUFFER_H_
  6. #define _IIO_BUFFER_H_
  8. #include <linux/types.h>
  10. /* Flags for iio_dmabuf.flags */
  11. #define IIO_BUFFER_DMABUF_CYCLIC		(1 << 0)
  12. #define IIO_BUFFER_DMABUF_SUPPORTED_FLAGS	0x00000001
  14. /**
  15.  * struct iio_dmabuf - Descriptor for a single IIO DMABUF object
  16.  * @fd:		file descriptor of the DMABUF object
  17.  * @flags:	one or more IIO_BUFFER_DMABUF_* flags
  18.  * @bytes_used:	number of bytes used in this DMABUF for the data transfer.
  19.  *		Should generally be set to the DMABUF's size.
  20.  */
  21. struct iio_dmabuf {
  22. 	__u32 fd;
  23. 	__u32 flags;
  24. 	__u64 bytes_used;
  25. };
  27. #define IIO_BUFFER_GET_FD_IOCTL			_IOWR('i', 0x91, int)
  28. #define IIO_BUFFER_DMABUF_ATTACH_IOCTL		_IOW('i', 0x92, int)
  29. #define IIO_BUFFER_DMABUF_DETACH_IOCTL		_IOW('i', 0x93, int)
  30. #define IIO_BUFFER_DMABUF_ENQUEUE_IOCTL		_IOW('i', 0x94, struct iio_dmabuf)
  32. #endif /* _IIO_BUFFER_H_ */