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Text File  |  1999-09-17  |  2KB  |  53 lines
  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 */
  53.