include/asm-m32r/addrspace.h

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