LXR uboot/arch/arm/include/asm/dma-mapping.h

   1/*
   2 * (C) Copyright 2007
   3 * Stelian Pop <stelian@popies.net>
   4 * Lead Tech Design <www.leadtechdesign.com>
   5 *
   6 * SPDX-License-Identifier:     GPL-2.0+
   7 */
   8#ifndef __ASM_ARM_DMA_MAPPING_H
   9#define __ASM_ARM_DMA_MAPPING_H
  10
  11#include <linux/dma-direction.h>
  12
  13#define dma_mapping_error(x, y) 0
  14
  15static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
  16{
  17        *handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len);
  18        return (void *)*handle;
  19}
  20
  21static inline void dma_free_coherent(void *addr)
  22{
  23        free(addr);
  24}
  25
  26static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
  27                                           enum dma_data_direction dir)
  28{
  29        return (unsigned long)vaddr;
  30}
  31
  32static inline void dma_unmap_single(volatile void *vaddr, size_t len,
  33                                    unsigned long paddr)
  34{
  35}
  36
  37#endif /* __ASM_ARM_DMA_MAPPING_H */
  38