1/*
2 * videobuf2-memops.h - generic memory handling routines for videobuf2
3 *
4 * Copyright (C) 2010 Samsung Electronics
5 *
6 * Author: Pawel Osciak <pawel@osciak.com>
7 *	   Marek Szyprowski <m.szyprowski@samsung.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation.
12 */
13
14#ifndef _MEDIA_VIDEOBUF2_MEMOPS_H
15#define _MEDIA_VIDEOBUF2_MEMOPS_H
16
17#include <media/videobuf2-core.h>
18
19/**
20 * vb2_vmarea_handler - common vma refcount tracking handler
21 * @refcount:	pointer to refcount entry in the buffer
22 * @put:	callback to function that decreases buffer refcount
23 * @arg:	argument for @put callback
24 */
25struct vb2_vmarea_handler {
26	atomic_t		*refcount;
27	void			(*put)(void *arg);
28	void			*arg;
29};
30
31extern const struct vm_operations_struct vb2_common_vm_ops;
32
33int vb2_get_contig_userptr(unsigned long vaddr, unsigned long size,
34			   struct vm_area_struct **res_vma, dma_addr_t *res_pa);
35
36struct vm_area_struct *vb2_get_vma(struct vm_area_struct *vma);
37void vb2_put_vma(struct vm_area_struct *vma);
38
39
40#endif
41