arch/nios2/include/asm/dma-mapping.h

   1 /*
   2  * Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
   3  * Copyright (C) 2009 Wind River Systems Inc
   4  *
   5  * This file is subject to the terms and conditions of the GNU General
   6  * Public License.  See the file COPYING in the main directory of this
   7  * archive for more details.
   8  */
   9
  10 #ifndef _ASM_NIOS2_DMA_MAPPING_H
  11 #define _ASM_NIOS2_DMA_MAPPING_H
  12
  13 extern const struct dma_map_ops nios2_dma_ops;
  14
  15 static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
  16 {
  17         return &nios2_dma_ops;
  18 }
  19
  20 /*
  21  * dma_alloc_attrs() always returns non-cacheable memory, so there's no need to
  22  * do any flushing here.
  23  */
  24 static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
  25                                   enum dma_data_direction direction)
  26 {
  27 }
  28
  29 #endif /* _ASM_NIOS2_DMA_MAPPING_H */