| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com> |
| Copyright (C) 2004 Chris Kennedy <c@groovy.org> |
| Copyright (C) 2006-2007 Hans Verkuil <hverkuil@xs4all.nl> |
| |
| */ |
| |
| #ifndef IVTV_UDMA_H |
| #define IVTV_UDMA_H |
| |
| /* User DMA functions */ |
| void ivtv_udma_get_page_info(struct ivtv_dma_page_info *dma_page, unsigned long first, unsigned long size); |
| int ivtv_udma_fill_sg_list(struct ivtv_user_dma *dma, struct ivtv_dma_page_info *dma_page, int map_offset); |
| void ivtv_udma_fill_sg_array(struct ivtv_user_dma *dma, u32 buffer_offset, u32 buffer_offset_2, u32 split); |
| int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr, |
| void __user *userbuf, int size_in_bytes); |
| void ivtv_udma_unmap(struct ivtv *itv); |
| void ivtv_udma_free(struct ivtv *itv); |
| void ivtv_udma_alloc(struct ivtv *itv); |
| void ivtv_udma_prepare(struct ivtv *itv); |
| void ivtv_udma_start(struct ivtv *itv); |
| |
| static inline void ivtv_udma_sync_for_device(struct ivtv *itv) |
| { |
| dma_sync_single_for_device(&itv->pdev->dev, itv->udma.SG_handle, |
| sizeof(itv->udma.SGarray), DMA_TO_DEVICE); |
| } |
| |
| static inline void ivtv_udma_sync_for_cpu(struct ivtv *itv) |
| { |
| dma_sync_single_for_cpu(&itv->pdev->dev, itv->udma.SG_handle, |
| sizeof(itv->udma.SGarray), DMA_TO_DEVICE); |
| } |
| |
| #endif |
