4 * Derived from ivtv-queue.h
6 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
24 #define CX18_DMA_UNMAPPED ((u32) -1)
26 /* cx18_buffer utility functions */
28 static inline void cx18_buf_sync_for_cpu(struct cx18_stream *s,
29 struct cx18_buffer *buf)
31 pci_dma_sync_single_for_cpu(s->cx->dev, buf->dma_handle,
35 static inline void cx18_buf_sync_for_device(struct cx18_stream *s,
36 struct cx18_buffer *buf)
38 pci_dma_sync_single_for_device(s->cx->dev, buf->dma_handle,
42 void cx18_buf_swap(struct cx18_buffer *buf);
44 /* cx18_queue utility functions */
45 void cx18_queue_init(struct cx18_queue *q);
46 void cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf,
47 struct cx18_queue *q);
48 struct cx18_buffer *cx18_dequeue(struct cx18_stream *s, struct cx18_queue *q);
49 struct cx18_buffer *cx18_queue_get_buf_irq(struct cx18_stream *s, u32 id,
51 void cx18_flush_queues(struct cx18_stream *s);
53 /* cx18_stream utility functions */
54 int cx18_stream_alloc(struct cx18_stream *s);
55 void cx18_stream_free(struct cx18_stream *s);