linux/arch/avr32/include/asm/addrspace.h
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   1/*
   2 * Defitions for the address spaces of the AVR32 CPUs. Heavily based on
   3 * include/asm-sh/addrspace.h
   4 *
   5 * Copyright (C) 2004-2006 Atmel Corporation
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 */
  11#ifndef __ASM_AVR32_ADDRSPACE_H
  12#define __ASM_AVR32_ADDRSPACE_H
  13
  14#ifdef CONFIG_MMU
  15
  16/* Memory segments when segmentation is enabled */
  17#define P0SEG           0x00000000
  18#define P1SEG           0x80000000
  19#define P2SEG           0xa0000000
  20#define P3SEG           0xc0000000
  21#define P4SEG           0xe0000000
  22
  23/* Returns the privileged segment base of a given address */
  24#define PXSEG(a)        (((unsigned long)(a)) & 0xe0000000)
  25
  26/* Returns the physical address of a PnSEG (n=1,2) address */
  27#define PHYSADDR(a)     (((unsigned long)(a)) & 0x1fffffff)
  28
  29/*
  30 * Map an address to a certain privileged segment
  31 */
  32#define P1SEGADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) \
  33                                      | P1SEG))
  34#define P2SEGADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) \
  35                                      | P2SEG))
  36#define P3SEGADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) \
  37                                      | P3SEG))
  38#define P4SEGADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) \
  39                                      | P4SEG))
  40
  41#endif /* CONFIG_MMU */
  42
  43#endif /* __ASM_AVR32_ADDRSPACE_H */
  44