1 /*
2 Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
3 Copyright (C) 2004 Chris Kennedy <c@groovy.org>
4 Copyright (C) 2006-2007 Hans Verkuil <hverkuil@xs4all.nl>
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #ifndef IVTV_UDMA_H
22 #define IVTV_UDMA_H
23
24 /* User DMA functions */
25 void ivtv_udma_get_page_info(struct ivtv_dma_page_info *dma_page, unsigned long first, unsigned long size);
26 int ivtv_udma_fill_sg_list(struct ivtv_user_dma *dma, struct ivtv_dma_page_info *dma_page, int map_offset);
27 void ivtv_udma_fill_sg_array(struct ivtv_user_dma *dma, u32 buffer_offset, u32 buffer_offset_2, u32 split);
28 int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,
29 void __user *userbuf, int size_in_bytes);
30 void ivtv_udma_unmap(struct ivtv *itv);
31 void ivtv_udma_free(struct ivtv *itv);
32 void ivtv_udma_alloc(struct ivtv *itv);
33 void ivtv_udma_prepare(struct ivtv *itv);
34 void ivtv_udma_start(struct ivtv *itv);
35
36 static inline void ivtv_udma_sync_for_device(struct ivtv *itv)
37 {
38 pci_dma_sync_single_for_device(itv->pdev, itv->udma.SG_handle,
39 sizeof(itv->udma.SGarray), PCI_DMA_TODEVICE);
40 }
41
42 static inline void ivtv_udma_sync_for_cpu(struct ivtv *itv)
43 {
44 pci_dma_sync_single_for_cpu(itv->pdev, itv->udma.SG_handle,
45 sizeof(itv->udma.SGarray), PCI_DMA_TODEVICE);
46 }
47
48 #endif
49
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