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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
| commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
| tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/media/pci/ivtv/ivtv-udma.h | |
| parent | Initial commit. (diff) | |
| download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip | |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/media/pci/ivtv/ivtv-udma.h')
| -rw-r--r-- | drivers/media/pci/ivtv/ivtv-udma.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/media/pci/ivtv/ivtv-udma.h b/drivers/media/pci/ivtv/ivtv-udma.h new file mode 100644 index 0000000000..12b9426b2d --- /dev/null +++ b/drivers/media/pci/ivtv/ivtv-udma.h @@ -0,0 +1,36 @@ +/* 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 |