git.sur5r.net Git - u-boot/blob - arch/nds32/include/asm/dma-mapping.h

   1 /*
   2  * Copyright (C) 2013 Andes Technology Corporation
   3  * Ken Kuo, Andes Technology Corporation <ken_kuo@andestech.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7 #ifndef __ASM_NDS_DMA_MAPPING_H
   8 #define __ASM_NDS_DMA_MAPPING_H
   9
  10 #include <linux/dma-direction.h>
  11
  12 static void *dma_alloc_coherent(size_t len, unsigned long *handle)
  13 {
  14         *handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len);
  15         return (void *)*handle;
  16 }
  17
  18 static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
  19                                            enum dma_data_direction dir)
  20 {
  21         return (unsigned long)vaddr;
  22 }
  23
  24 static inline void dma_unmap_single(volatile void *vaddr, size_t len,
  25                                     unsigned long paddr)
  26 {
  27 }
  28
  29 #endif /* __ASM_NDS_DMA_MAPPING_H */