kernel/2.6.29.6-aldebaran-rt/include/asm-m32r/addrspace.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2001 by Hiroyuki Kondo
   7  *
   8  * Defitions for the address spaces of the M32R CPUs.
   9  */
  10 #ifndef __ASM_M32R_ADDRSPACE_H
  11 #define __ASM_M32R_ADDRSPACE_H
  12
  13 /*
  14  * Memory segments (32bit kernel mode addresses)
  15  */
  16 #define KUSEG                   0x00000000
  17 #define KSEG0                   0x80000000
  18 #define KSEG1                   0xa0000000
  19 #define KSEG2                   0xc0000000
  20 #define KSEG3                   0xe0000000
  21
  22 #define K0BASE  KSEG0
  23
  24 /*
  25  * Returns the kernel segment base of a given address
  26  */
  27 #ifndef __ASSEMBLY__
  28 #define KSEGX(a)                (((unsigned long)(a)) & 0xe0000000)
  29 #else
  30 #define KSEGX(a)                ((a) & 0xe0000000)
  31 #endif
  32
  33 /*
  34  * Returns the physical address of a KSEG0/KSEG1 address
  35  */
  36 #ifndef __ASSEMBLY__
  37 #define PHYSADDR(a)             (((unsigned long)(a)) & 0x1fffffff)
  38 #else
  39 #define PHYSADDR(a)             ((a) & 0x1fffffff)
  40 #endif
  41
  42 /*
  43  * Map an address to a certain kernel segment
  44  */
  45 #ifndef __ASSEMBLY__
  46 #define KSEG0ADDR(a)            ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG0))
  47 #define KSEG1ADDR(a)            ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG1))
  48 #define KSEG2ADDR(a)            ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG2))
  49 #define KSEG3ADDR(a)            ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG3))
  50 #else
  51 #define KSEG0ADDR(a)            (((a) & 0x1fffffff) | KSEG0)
  52 #define KSEG1ADDR(a)            (((a) & 0x1fffffff) | KSEG1)
  53 #define KSEG2ADDR(a)            (((a) & 0x1fffffff) | KSEG2)
  54 #define KSEG3ADDR(a)            (((a) & 0x1fffffff) | KSEG3)
  55 #endif
  56
  57 #endif /* __ASM_M32R_ADDRSPACE_H */