include/asm-arm/arch-ixp4xx/memory.h

   1 /*
   2  * linux/include/asm-arm/arch-ixp4xx/memory.h
   3  *
   4  * Copyright (c) 2001-2004 MontaVista Software, Inc.
   5  */
   6
   7 #ifndef __ASM_ARCH_MEMORY_H
   8 #define __ASM_ARCH_MEMORY_H
   9
  10 #include <asm/sizes.h>
  11
  12 /*
  13  * Physical DRAM offset.
  14  */
  15 #define PHYS_OFFSET     UL(0x00000000)
  16
  17 #if !defined(__ASSEMBLY__) && defined(CONFIG_PCI)
  18
  19 #ifdef CONFIG_PCI
  20 void ixp4xx_adjust_zones(int node, unsigned long *size, unsigned long *holes);
  21
  22 #define arch_adjust_zones(node, size, holes) \
  23         ixp4xx_adjust_zones(node, size, holes)
  24 #endif
  25
  26 #define ISA_DMA_THRESHOLD (SZ_64M - 1)
  27
  28 #endif
  29
  30 /*
  31  * Virtual view <-> DMA view memory address translations
  32  * virt_to_bus: Used to translate the virtual address to an
  33  *              address suitable to be passed to set_dma_addr
  34  * bus_to_virt: Used to convert an address for DMA operations
  35  *              to an address that the kernel can use.
  36  *
  37  * These are dummies for now.
  38  */
  39 #define __virt_to_bus(x)         __virt_to_phys(x)
  40 #define __bus_to_virt(x)         __phys_to_virt(x)
  41
  42 #endif