arch/microblaze/include/asm/dma.h

   1 /*
   2  * Copyright (C) 2006 Atmark Techno, Inc.
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License. See the file "COPYING" in the main directory of this archive
   6  * for more details.
   7  */
   8
   9 #ifndef _ASM_MICROBLAZE_DMA_H
  10 #define _ASM_MICROBLAZE_DMA_H
  11
  12 #ifndef CONFIG_MMU
  13 /* we don't have dma address limit. define it as zero to be
  14  * unlimited. */
  15 #define MAX_DMA_ADDRESS         (0)
  16 #else
  17 /* Virtual address corresponding to last available physical memory address.  */
  18 #define MAX_DMA_ADDRESS (CONFIG_KERNEL_START + memory_size - 1)
  19 #endif
  20
  21 #endif /* _ASM_MICROBLAZE_DMA_H */