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