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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note *//* industrial I/O buffer definitions needed both in and out of kernel */
#ifndef _UAPI_IIO_BUFFER_H_#define _UAPI_IIO_BUFFER_H_
#include <linux/types.h>
/* Flags for iio_dmabuf.flags */#define IIO_BUFFER_DMABUF_CYCLIC (1 << 0)#define IIO_BUFFER_DMABUF_SUPPORTED_FLAGS 0x00000001
/** * struct iio_dmabuf - Descriptor for a single IIO DMABUF object * @fd: file descriptor of the DMABUF object * @flags: one or more IIO_BUFFER_DMABUF_* flags * @bytes_used: number of bytes used in this DMABUF for the data transfer. * Should generally be set to the DMABUF's size. */struct iio_dmabuf { __u32 fd; __u32 flags; __u64 bytes_used;};
#define IIO_BUFFER_GET_FD_IOCTL _IOWR('i', 0x91, int)#define IIO_BUFFER_DMABUF_ATTACH_IOCTL _IOW('i', 0x92, int)#define IIO_BUFFER_DMABUF_DETACH_IOCTL _IOW('i', 0x93, int)#define IIO_BUFFER_DMABUF_ENQUEUE_IOCTL _IOW('i', 0x94, struct iio_dmabuf)
#endif /* _UAPI_IIO_BUFFER_H_ */