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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internals.h (1248B)

      1/* SPDX-License-Identifier: GPL-2.0+ */
      2/*
      3 * Copyright (C) 2018 Exceet Electronics GmbH
      4 * Copyright (C) 2018 Bootlin
      5 *
      6 * Author: Boris Brezillon <boris.brezillon@bootlin.com>
      7 *
      8 * Helpers needed by the spi or spi-mem logic. Should not be used outside of
      9 * spi-mem.c and spi.c.
     10 */
     11
     12#ifndef __LINUX_SPI_INTERNALS_H
     13#define __LINUX_SPI_INTERNALS_H
     14
     15#include <linux/device.h>
     16#include <linux/dma-direction.h>
     17#include <linux/scatterlist.h>
     18#include <linux/spi/spi.h>
     19
     20void spi_flush_queue(struct spi_controller *ctrl);
     21
     22#ifdef CONFIG_HAS_DMA
     23int spi_map_buf(struct spi_controller *ctlr, struct device *dev,
     24		struct sg_table *sgt, void *buf, size_t len,
     25		enum dma_data_direction dir);
     26void spi_unmap_buf(struct spi_controller *ctlr, struct device *dev,
     27		   struct sg_table *sgt, enum dma_data_direction dir);
     28#else /* !CONFIG_HAS_DMA */
     29static inline int spi_map_buf(struct spi_controller *ctlr, struct device *dev,
     30			      struct sg_table *sgt, void *buf, size_t len,
     31			      enum dma_data_direction dir)
     32{
     33	return -EINVAL;
     34}
     35
     36static inline void spi_unmap_buf(struct spi_controller *ctlr,
     37				 struct device *dev, struct sg_table *sgt,
     38				 enum dma_data_direction dir)
     39{
     40}
     41#endif /* CONFIG_HAS_DMA */
     42
     43#endif /* __LINUX_SPI_INTERNALS_H */