1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
4*4882a593Smuzhiyun Copyright (C) 2004 Chris Kennedy <c@groovy.org>
5*4882a593Smuzhiyun Copyright (C) 2006-2007 Hans Verkuil <hverkuil@xs4all.nl>
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #ifndef IVTV_UDMA_H
10*4882a593Smuzhiyun #define IVTV_UDMA_H
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun /* User DMA functions */
13*4882a593Smuzhiyun void ivtv_udma_get_page_info(struct ivtv_dma_page_info *dma_page, unsigned long first, unsigned long size);
14*4882a593Smuzhiyun int ivtv_udma_fill_sg_list(struct ivtv_user_dma *dma, struct ivtv_dma_page_info *dma_page, int map_offset);
15*4882a593Smuzhiyun void ivtv_udma_fill_sg_array(struct ivtv_user_dma *dma, u32 buffer_offset, u32 buffer_offset_2, u32 split);
16*4882a593Smuzhiyun int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,
17*4882a593Smuzhiyun void __user *userbuf, int size_in_bytes);
18*4882a593Smuzhiyun void ivtv_udma_unmap(struct ivtv *itv);
19*4882a593Smuzhiyun void ivtv_udma_free(struct ivtv *itv);
20*4882a593Smuzhiyun void ivtv_udma_alloc(struct ivtv *itv);
21*4882a593Smuzhiyun void ivtv_udma_prepare(struct ivtv *itv);
22*4882a593Smuzhiyun void ivtv_udma_start(struct ivtv *itv);
23*4882a593Smuzhiyun
ivtv_udma_sync_for_device(struct ivtv * itv)24*4882a593Smuzhiyun static inline void ivtv_udma_sync_for_device(struct ivtv *itv)
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun pci_dma_sync_single_for_device(itv->pdev, itv->udma.SG_handle,
27*4882a593Smuzhiyun sizeof(itv->udma.SGarray), PCI_DMA_TODEVICE);
28*4882a593Smuzhiyun }
29*4882a593Smuzhiyun
ivtv_udma_sync_for_cpu(struct ivtv * itv)30*4882a593Smuzhiyun static inline void ivtv_udma_sync_for_cpu(struct ivtv *itv)
31*4882a593Smuzhiyun {
32*4882a593Smuzhiyun pci_dma_sync_single_for_cpu(itv->pdev, itv->udma.SG_handle,
33*4882a593Smuzhiyun sizeof(itv->udma.SGarray), PCI_DMA_TODEVICE);
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun #endif
37