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 */ 25void ivtv_udma_get_page_info(struct ivtv_dma_page_info *dma_page, unsigned long first, unsigned long size); 26int ivtv_udma_fill_sg_list(struct ivtv_user_dma *dma, struct ivtv_dma_page_info *dma_page, int map_offset); 27void ivtv_udma_fill_sg_array(struct ivtv_user_dma *dma, u32 buffer_offset, u32 buffer_offset_2, u32 split); 28int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr, 29 void __user *userbuf, int size_in_bytes); 30void ivtv_udma_unmap(struct ivtv *itv); 31void ivtv_udma_free(struct ivtv *itv); 32void ivtv_udma_alloc(struct ivtv *itv); 33void ivtv_udma_prepare(struct ivtv *itv); 34void ivtv_udma_start(struct ivtv *itv); 35 36static 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 42static 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