release/src-rt-6.x.4708/linux/linux-2.6.36/arch/avr32/include/asm/addrspace.h

   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 */