Add build system scaffolding and libc headers

1 files changed, 32 insertions, 0 deletions

diff --git a/include/arch/x86_64/linux/iio/buffer.h b/include/arch/x86_64/linux/iio/buffer.h
new file mode 100644
index 00000000..cc9da780
--- /dev/null
+++ b/include/arch/x86_64/linux/iio/buffer.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/* industrial I/O buffer definitions needed both in and out of kernel
+ */
+
+#ifndef _IIO_BUFFER_H_
+#define _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 /* _IIO_BUFFER_H_ */