projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 87b9ad07 MCC |
1 | /* |
| 2 | * helper functions for vmalloc capture buffers | |
| 3 | * | |
| 5d6aaf50 | 4 | * The functions expect the hardware being able to scatter gather |
| 87b9ad07 MCC |
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, <[email protected]> | |
| 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 | */ | |
| 59d34489 MCC |
15 | #ifndef _VIDEOBUF_VMALLOC_H |
| 16 | #define _VIDEOBUF_VMALLOC_H | |
| 87b9ad07 MCC |
17 | |
| 18 | #include <media/videobuf-core.h> | |
| 19 | ||
| 20 | /* --------------------------------------------------------------------- */ | |
| 21 | ||
| 7a02264c | 22 | struct videobuf_vmalloc_memory { |
| 87b9ad07 MCC |
23 | u32 magic; |
| 24 | ||
| 87b9ad07 MCC |
25 | void *vmalloc; |
| 26 | ||
| 7a02264c PO |
27 | /* remap_vmalloc_range seems to need to run |
| 28 | * after mmap() on some cases */ | |
| 87b9ad07 MCC |
29 | struct vm_area_struct *vma; |
| 30 | }; | |
| 31 | ||
| 7a02264c | 32 | void videobuf_queue_vmalloc_init(struct videobuf_queue *q, |
| 38a54f35 | 33 | const struct videobuf_queue_ops *ops, |
| f8b0bca1 | 34 | struct device *dev, |
| 87b9ad07 MCC |
35 | spinlock_t *irqlock, |
| 36 | enum v4l2_buf_type type, | |
| 37 | enum v4l2_field field, | |
| 38 | unsigned int msize, | |
| 39 | void *priv); | |
| 40 | ||
| 7a02264c | 41 | void *videobuf_to_vmalloc(struct videobuf_buffer *buf); |
| 87b9ad07 | 42 | |
| 7a02264c | 43 | void videobuf_vmalloc_free(struct videobuf_buffer *buf); |
| 59d34489 MCC |
44 | |
| 45 | #endif |