videobuf2-memops.h (bf61c8840efe60fd8f91446860b63338fb424158) videobuf2-memops.h (21fb0cb7ec65a40b9f5f7cda59eba0eb2ae76473)
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>
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#include <linux/mm.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 {

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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
19
20/**
21 * vb2_vmarea_handler - common vma refcount tracking handler
22 * @refcount: pointer to refcount entry in the buffer
23 * @put: callback to function that decreases buffer refcount
24 * @arg: argument for @put callback
25 */
26struct vb2_vmarea_handler {

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32extern const struct vm_operations_struct vb2_common_vm_ops;
33
34int vb2_get_contig_userptr(unsigned long vaddr, unsigned long size,
35 struct vm_area_struct **res_vma, dma_addr_t *res_pa);
36
37struct vm_area_struct *vb2_get_vma(struct vm_area_struct *vma);
38void vb2_put_vma(struct vm_area_struct *vma);
39
40struct frame_vector *vb2_create_framevec(unsigned long start,
41 unsigned long length,
42 bool write);
43void vb2_destroy_framevec(struct frame_vector *vec);
39
40#endif
44
45#endif