| /* |
| * 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); |
| |
| int vb2_mmap_pfn_range(struct vm_area_struct *vma, unsigned long paddr, |
| unsigned long size, |
| const struct vm_operations_struct *vm_ops, |
| void *priv); |
| |
| struct vm_area_struct *vb2_get_vma(struct vm_area_struct *vma); |
| void vb2_put_vma(struct vm_area_struct *vma); |
| |
| |
| #endif |
