cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

dma.h (910B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef DMA_H
      3#define DMA_H
      4
      5#include <asm/glue-cache.h>
      6
      7#ifndef MULTI_CACHE
      8#define dmac_map_area			__glue(_CACHE,_dma_map_area)
      9#define dmac_unmap_area 		__glue(_CACHE,_dma_unmap_area)
     10
     11/*
     12 * These are private to the dma-mapping API.  Do not use directly.
     13 * Their sole purpose is to ensure that data held in the cache
     14 * is visible to DMA, or data written by DMA to system memory is
     15 * visible to the CPU.
     16 */
     17extern void dmac_map_area(const void *, size_t, int);
     18extern void dmac_unmap_area(const void *, size_t, int);
     19
     20#else
     21
     22/*
     23 * These are private to the dma-mapping API.  Do not use directly.
     24 * Their sole purpose is to ensure that data held in the cache
     25 * is visible to DMA, or data written by DMA to system memory is
     26 * visible to the CPU.
     27 */
     28#define dmac_map_area			cpu_cache.dma_map_area
     29#define dmac_unmap_area 		cpu_cache.dma_unmap_area
     30
     31#endif
     32
     33#endif