| /* |
| * helper functions for vmalloc capture buffers |
| * |
| * The functions expect the hardware being able to scatter gather |
| * (i.e. the buffers are not linear in physical memory, but fragmented |
| * into PAGE_SIZE chunks). They also assume the driver does not need |
| * to touch the video data. |
| * |
| * (c) 2007 Mauro Carvalho Chehab, <mchehab@infradead.org> |
| * |
| * 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; either version 2 |
| */ |
| #ifndef _VIDEOBUF_VMALLOC_H |
| #define _VIDEOBUF_VMALLOC_H |
| |
| #include <media/videobuf-core.h> |
| |
| /* --------------------------------------------------------------------- */ |
| |
| struct videobuf_vmalloc_memory { |
| u32 magic; |
| |
| void *vaddr; |
| |
| /* remap_vmalloc_range seems to need to run |
| * after mmap() on some cases */ |
| struct vm_area_struct *vma; |
| }; |
| |
| void videobuf_queue_vmalloc_init(struct videobuf_queue *q, |
| const struct videobuf_queue_ops *ops, |
| struct device *dev, |
| spinlock_t *irqlock, |
| enum v4l2_buf_type type, |
| enum v4l2_field field, |
| unsigned int msize, |
| void *priv, |
| struct mutex *ext_lock); |
| |
| void *videobuf_to_vmalloc(struct videobuf_buffer *buf); |
| |
| void videobuf_vmalloc_free(struct videobuf_buffer *buf); |
| |
| #endif |