release/src-rt-6.x/linux/linux-2.6/include/asm-mips/mach-ip22/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 Ralf Baechle
   7  * Copyright (C) 2000, 2002  Maciej W. Rozycki
   8  * Copyright (C) 1990, 1999, 2000 Silicon Graphics, Inc.
   9  */
  10 #ifndef _ASM_MACH_IP22_SPACES_H
  11 #define _ASM_MACH_IP22_SPACES_H
  12
  13
  14 #ifdef CONFIG_32BIT
  15
  16 #define CAC_BASE                0x80000000
  17 #define IO_BASE                 0xa0000000
  18 #define UNCAC_BASE              0xa0000000
  19 #define MAP_BASE                0xc0000000
  20
  21 /*
  22  * This handles the memory map.
  23  * We handle pages at KSEG0 for kernels with 32 bit address space.
  24  */
  25 #define PAGE_OFFSET             0x80000000UL
  26
  27 /*
  28  * Memory above this physical address will be considered highmem.
  29  */
  30 #ifndef HIGHMEM_START
  31 #define HIGHMEM_START           0x20000000UL
  32 #endif
  33
  34 #endif /* CONFIG_32BIT */
  35
  36 #ifdef CONFIG_64BIT
  37 #define PAGE_OFFSET             0xffffffff80000000UL
  38
  39 #ifndef HIGHMEM_START
  40 #define HIGHMEM_START           (1UL << 59UL)
  41 #endif
  42
  43 #define CAC_BASE                0xffffffff80000000
  44 #define IO_BASE                 0xffffffffa0000000
  45 #define UNCAC_BASE              0xffffffffa0000000
  46 #define MAP_BASE                0xc000000000000000
  47
  48 #define TO_PHYS(x)              (             ((x) & TO_PHYS_MASK))
  49 #define TO_CAC(x)               (CAC_BASE   | ((x) & TO_PHYS_MASK))
  50 #define TO_UNCAC(x)             (UNCAC_BASE | ((x) & TO_PHYS_MASK))
  51
  52 #endif /* CONFIG_64BIT */
  53
  54 #endif /* __ASM_MACH_IP22_SPACES_H */