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mips
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include
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asm
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sn0
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arch.h

arch.h 2.0 KB
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  1. /*
    2. 

  2.  * This file is subject to the terms and conditions of the GNU General Public
    3. 

  3.  * License.  See the file "COPYING" in the main directory of this archive
    4. 

  4.  * for more details.
    5. 

  5.  *
    6. 

  6.  * SGI IP27 specific setup.
    7. 

  7.  *
    8. 

  8.  * Copyright (C) 1995 - 1997, 1999 Silcon Graphics, Inc.
    9. 

  9.  * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)
    10. 

  10.  */
    11. 

  11. #ifndef _ASM_SN_SN0_ARCH_H
    12. 

  12. #define _ASM_SN_SN0_ARCH_H
    13. 

  13. 

  14. 

  15. #ifndef SN0XXL  /* 128 cpu SMP max */
    16. 

  16. /*
    17. 

  17.  * This is the maximum number of nodes that can be part of a kernel.
    18. 

  18.  * Effectively, it's the maximum number of compact node ids (cnodeid_t).
    19. 

  19.  */
    20. 

  20. #define MAX_COMPACT_NODES       64
    21. 

  21. 

  22. /*
    23. 

  23.  * MAXCPUS refers to the maximum number of CPUs in a single kernel.
    24. 

  24.  * This is not necessarily the same as MAXNODES * CPUS_PER_NODE
    25. 

  25.  */
    26. 

  26. #define MAXCPUS                 128
    27. 

  27. 

  28. #else /* SN0XXL system */
    29. 

  29. 

  30. #define MAX_COMPACT_NODES       128
    31. 

  31. #define MAXCPUS                 256
    32. 

  32. 

  33. #endif /* SN0XXL */
    34. 

  34. 

  35. /*
    36. 

  36.  * This is the maximum number of NASIDS that can be present in a system.
    37. 

  37.  * (Highest NASID plus one.)
    38. 

  38.  */
    39. 

  39. #define MAX_NASIDS		256
    40. 

  40. 

  41. /*
    42. 

  42.  * MAX_REGIONS refers to the maximum number of hardware partitioned regions.
    43. 

  43.  */
    44. 

  44. #define	MAX_REGIONS		64
    45. 

  45. #define MAX_NONPREMIUM_REGIONS  16
    46. 

  46. #define MAX_PREMIUM_REGIONS     MAX_REGIONS
    47. 

  47. 

  48. /*
    49. 

  49.  * MAX_PARITIONS refers to the maximum number of logically defined
    50. 

  50.  * partitions the system can support.
    51. 

  51.  */
    52. 

  52. #define MAX_PARTITIONS		MAX_REGIONS
    53. 

  53. 

  54. #define NASID_MASK_BYTES	((MAX_NASIDS + 7) / 8)
    55. 

  55. 

  56. /*
    57. 

  57.  * Slot constants for SN0
    58. 

  58.  */
    59. 

  59. #ifdef CONFIG_SGI_SN_N_MODE
    60. 

  60. #define MAX_MEM_SLOTS   16                      /* max slots per node */
    61. 

  61. #else /* !CONFIG_SGI_SN_N_MODE, assume CONFIG_SGI_SN_M_MODE */
    62. 

  62. #define MAX_MEM_SLOTS   32                      /* max slots per node */
    63. 

  63. #endif /* CONFIG_SGI_SN_M_MODE */
    64. 

  64. 

  65. #define SLOT_SHIFT      	(27)
    66. 

  66. #define SLOT_MIN_MEM_SIZE	(32*1024*1024)
    67. 

  67. 

  68. #define CPUS_PER_NODE		2	/* CPUs on a single hub */
    69. 

  69. #define CPUS_PER_NODE_SHFT	1	/* Bits to shift in the node number */
    70. 

  70. #define CPUS_PER_SUBNODE	2	/* CPUs on a single hub PI */
    71. 

  71. 

  72. #endif /* _ASM_SN_SN0_ARCH_H */
    73.