include/asm-mips/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) 1996 by Ralf Baechle
   7  *
   8  * Defitions for the address spaces of the MIPS CPUs.
   9  */
  10 #ifndef __ASM_MIPS_ADDRSPACE_H
  11 #define __ASM_MIPS_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 /*
  23  * Returns the kernel segment base of a given address
  24  */
  25 #define KSEGX(a)                (((unsigned long)(a)) & 0xe0000000)
  26
  27 /*
  28  * Returns the physical address of a KSEG0/KSEG1 address
  29  */
  30 #define PHYSADDR(a)             (((unsigned long)(a)) & 0x1fffffff)
  31
  32 /*
  33  * Map an address to a certain kernel segment
  34  */
  35 #define KSEG0ADDR(a)            ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG0))
  36 #define KSEG1ADDR(a)            ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG1))
  37 #define KSEG2ADDR(a)            ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG2))
  38 #define KSEG3ADDR(a)            ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG3))
  39
  40 /*
  41  * Memory segments (64bit kernel mode addresses)
  42  */
  43 #define XKUSEG                  0x0000000000000000
  44 #define XKSSEG                  0x4000000000000000
  45 #define XKPHYS                  0x8000000000000000
  46 #define XKSEG                   0xc000000000000000
  47 #define CKSEG0                  0xffffffff80000000
  48 #define CKSEG1                  0xffffffffa0000000
  49 #define CKSSEG                  0xffffffffc0000000
  50 #define CKSEG3                  0xffffffffe0000000
  51
  52 #endif /* __ASM_MIPS_ADDRSPACE_H */