1004cc378SMarek Szyprowski /* 2004cc378SMarek Szyprowski * videobuf2-memops.h - generic memory handling routines for videobuf2 3004cc378SMarek Szyprowski * 4004cc378SMarek Szyprowski * Copyright (C) 2010 Samsung Electronics 5004cc378SMarek Szyprowski * 695072084SPawel Osciak * Author: Pawel Osciak <pawel@osciak.com> 7004cc378SMarek Szyprowski * Marek Szyprowski <m.szyprowski@samsung.com> 8004cc378SMarek Szyprowski * 9004cc378SMarek Szyprowski * This program is free software; you can redistribute it and/or modify 10004cc378SMarek Szyprowski * it under the terms of the GNU General Public License as published by 11004cc378SMarek Szyprowski * the Free Software Foundation. 12004cc378SMarek Szyprowski */ 13004cc378SMarek Szyprowski 14004cc378SMarek Szyprowski #ifndef _MEDIA_VIDEOBUF2_MEMOPS_H 15004cc378SMarek Szyprowski #define _MEDIA_VIDEOBUF2_MEMOPS_H 16004cc378SMarek Szyprowski 17004cc378SMarek Szyprowski #include <media/videobuf2-core.h> 18004cc378SMarek Szyprowski 19004cc378SMarek Szyprowski /** 20b6836a6fSMauro Carvalho Chehab * struct vb2_vmarea_handler - common vma refcount tracking handler 21b6836a6fSMauro Carvalho Chehab * 22004cc378SMarek Szyprowski * @refcount: pointer to refcount entry in the buffer 23004cc378SMarek Szyprowski * @put: callback to function that decreases buffer refcount 24004cc378SMarek Szyprowski * @arg: argument for @put callback 25004cc378SMarek Szyprowski */ 26004cc378SMarek Szyprowski struct vb2_vmarea_handler { 27004cc378SMarek Szyprowski atomic_t *refcount; 28004cc378SMarek Szyprowski void (*put)(void *arg); 29004cc378SMarek Szyprowski void *arg; 30004cc378SMarek Szyprowski }; 31004cc378SMarek Szyprowski 32004cc378SMarek Szyprowski extern const struct vm_operations_struct vb2_common_vm_ops; 33004cc378SMarek Szyprowski 34004cc378SMarek Szyprowski int vb2_get_contig_userptr(unsigned long vaddr, unsigned long size, 35004cc378SMarek Szyprowski struct vm_area_struct **res_vma, dma_addr_t *res_pa); 36004cc378SMarek Szyprowski 37004cc378SMarek Szyprowski struct vm_area_struct *vb2_get_vma(struct vm_area_struct *vma); 38004cc378SMarek Szyprowski void vb2_put_vma(struct vm_area_struct *vma); 39004cc378SMarek Szyprowski 40004cc378SMarek Szyprowski 41004cc378SMarek Szyprowski #endif 42