include/asm-mips/mach-ip32/spaces.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) 1994 - 1999, 2000, 03, 04, 05 Ralf Baechle (ralf@linux-mips.org)
   7  * Copyright (C) 2000, 2002  Maciej W. Rozycki
   8  * Copyright (C) 1990, 1999, 2000 Silicon Graphics, Inc.
   9  */
  10 #ifndef _ASM_MACH_IP32_SPACES_H
  11 #define _ASM_MACH_IP32_SPACES_H
  12
  13 /*
  14  * Memory above this physical address will be considered highmem.
  15  * Fixme: 59 bits is a fictive number and makes assumptions about processors
  16  * in the distant future.  Nobody will care for a few years :-)
  17  */
  18 #ifndef HIGHMEM_START
  19 #define HIGHMEM_START           (1UL << 59UL)
  20 #endif
  21
  22 #define CAC_BASE                0x9800000000000000
  23 #define IO_BASE                 0x9000000000000000
  24 #define UNCAC_BASE              0x9000000000000000
  25 #define MAP_BASE                0xc000000000000000
  26
  27 #define TO_PHYS(x)              (             ((x) & TO_PHYS_MASK))
  28 #define TO_CAC(x)               (CAC_BASE   | ((x) & TO_PHYS_MASK))
  29 #define TO_UNCAC(x)             (UNCAC_BASE | ((x) & TO_PHYS_MASK))
  30
  31 /*
  32  * This handles the memory map.
  33  */
  34 #define PAGE_OFFSET             CAC_BASE
  35
  36 #endif /* __ASM_MACH_IP32_SPACES_H */