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