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 17c139990eSJunghak Sung #include <media/videobuf2-v4l2.h> 1821fb0cb7SJan Kara #include <linux/mm.h> 196c4bb65dSElena Reshetova #include <linux/refcount.h> 20004cc378SMarek Szyprowski 21004cc378SMarek Szyprowski /** 229fbe71b4SMauro Carvalho Chehab * struct vb2_vmarea_handler - common vma refcount tracking handler. 23b6836a6fSMauro Carvalho Chehab * 249fbe71b4SMauro Carvalho Chehab * @refcount: pointer to &refcount_t entry in the buffer. 259fbe71b4SMauro Carvalho Chehab * @put: callback to function that decreases buffer refcount. 269fbe71b4SMauro Carvalho Chehab * @arg: argument for @put callback. 27004cc378SMarek Szyprowski */ 28004cc378SMarek Szyprowski struct vb2_vmarea_handler { 296c4bb65dSElena Reshetova refcount_t *refcount; 30004cc378SMarek Szyprowski void (*put)(void *arg); 31004cc378SMarek Szyprowski void *arg; 32004cc378SMarek Szyprowski }; 33004cc378SMarek Szyprowski 34004cc378SMarek Szyprowski extern const struct vm_operations_struct vb2_common_vm_ops; 35004cc378SMarek Szyprowski 3621fb0cb7SJan Kara struct frame_vector *vb2_create_framevec(unsigned long start, 37*e2fc6eddSHans Verkuil unsigned long length, 38*e2fc6eddSHans Verkuil bool write); 3921fb0cb7SJan Kara void vb2_destroy_framevec(struct frame_vector *vec); 40004cc378SMarek Szyprowski 41004cc378SMarek Szyprowski #endif 42