]>
git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - include/media/videobuf-vmalloc.h
2 * helper functions for vmalloc capture buffers
4 * The functions expect the hardware being able to scatter gather
5 * (i.e. the buffers are not linear in physical memory, but fragmented
6 * into PAGE_SIZE chunks). They also assume the driver does not need
7 * to touch the video data.
9 * (c) 2007 Mauro Carvalho Chehab, <mchehab@kernel.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2
15 #ifndef _VIDEOBUF_VMALLOC_H
16 #define _VIDEOBUF_VMALLOC_H
18 #include <media/videobuf-core.h>
20 /* --------------------------------------------------------------------- */
22 struct videobuf_vmalloc_memory
{
27 /* remap_vmalloc_range seems to need to run
28 * after mmap() on some cases */
29 struct vm_area_struct
*vma
;
32 void videobuf_queue_vmalloc_init(struct videobuf_queue
*q
,
33 const struct videobuf_queue_ops
*ops
,
36 enum v4l2_buf_type type
,
37 enum v4l2_field field
,
40 struct mutex
*ext_lock
);
42 void *videobuf_to_vmalloc(struct videobuf_buffer
*buf
);
44 void videobuf_vmalloc_free(struct videobuf_buffer
*buf
);