cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ivtv-udma.h (1317B)

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