projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 87b9ad07 MCC |
1 | /* |
| 2 | * helper functions for vmalloc capture buffers | |
| 3 | * | |
| 4 | * The functions expect the hardware being able to scatter gatter | |
| 5 | * (i.e. the buffers are not linear in physical memory, but fragmented | |
| 6 | * into PAGE_SIZE chunks). They also assume the driver does not need | |
| 7 | * to touch the video data. | |
| 8 | * | |
| 9 | * (c) 2007 Mauro Carvalho Chehab, <mchehab@infradead.org> | |
| 10 | * | |
| 11 | * This program is free software; you can redistribute it and/or modify | |
| 12 | * it under the terms of the GNU General Public License as published by | |
| 13 | * the Free Software Foundation; either version 2 | |
| 14 | */ | |
| 15 | ||
| 16 | #include <media/videobuf-core.h> | |
| 17 | ||
| 18 | /* --------------------------------------------------------------------- */ | |
| 19 | ||
| 384b835a | 20 | struct videobuf_vmalloc_memory |
| 87b9ad07 MCC |
21 | { |
| 22 | u32 magic; | |
| 23 | ||
| 87b9ad07 MCC |
24 | void *vmalloc; |
| 25 | ||
| 26 | /* remap_vmalloc_range seems to need to run after mmap() on some cases */ | |
| 27 | struct vm_area_struct *vma; | |
| 28 | }; | |
| 29 | ||
| 30 | void videobuf_queue_vmalloc_init(struct videobuf_queue* q, | |
| 31 | struct videobuf_queue_ops *ops, | |
| 32 | void *dev, | |
| 33 | spinlock_t *irqlock, | |
| 34 | enum v4l2_buf_type type, | |
| 35 | enum v4l2_field field, | |
| 36 | unsigned int msize, | |
| 37 | void *priv); | |
| 38 | ||
| 39 | void *videobuf_to_vmalloc (struct videobuf_buffer *buf); | |
| 40 | ||
| 41 | void videobuf_vmalloc_free (struct videobuf_buffer *buf); |