/arch/mn10300/include/asm/tlbflush.h

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35 · C++ Header · 80 lines · 48 code · 12 blank · 20 comment · 6 complexity · 1a4e2fb9c79abce250137d5ccb3a7a3b MD5 · raw file 

    

  1. /* MN10300 TLB flushing functions
    2. 

  2.  *
    3. 

  3.  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
    4. 

  4.  * Written by David Howells (dhowells@redhat.com)
    5. 

  5.  *
    6. 

  6.  * This program is free software; you can redistribute it and/or
    7. 

  7.  * modify it under the terms of the GNU General Public Licence
    8. 

  8.  * as published by the Free Software Foundation; either version
    9. 

  9.  * 2 of the Licence, or (at your option) any later version.
    10. 

  10.  */
    11. 

  11. #ifndef _ASM_TLBFLUSH_H
    12. 

  12. #define _ASM_TLBFLUSH_H
    13. 

  13. 

  14. #include <asm/processor.h>
    15. 

  15. 

  16. #define __flush_tlb()						\
    17. 

  17. do {								\
    18. 

  18. 	int w;							\
    19. 

  19. 	__asm__ __volatile__					\
    20. 

  20. 		("	mov %1,%0		\n"		\
    21. 

  21. 		 "	or %2,%0		\n"		\
    22. 

  22. 		 "	mov %0,%1		\n"		\
    23. 

  23. 		 : "=d"(w)					\
    24. 

  24. 		 : "m"(MMUCTR), "i"(MMUCTR_IIV|MMUCTR_DIV)	\
    25. 

  25. 		 : "cc", "memory"				\
    26. 

  26. 		 );						\
    27. 

  27. } while (0)
    28. 

  28. 

  29. #define __flush_tlb_all() __flush_tlb()
    30. 

  30. #define __flush_tlb_one(addr) __flush_tlb()
    31. 

  31. 

  32. 

  33. /*
    34. 

  34.  * TLB flushing:
    35. 

  35.  *
    36. 

  36.  *  - flush_tlb() flushes the current mm struct TLBs
    37. 

  37.  *  - flush_tlb_all() flushes all processes TLBs
    38. 

  38.  *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
    39. 

  39.  *  - flush_tlb_page(vma, vmaddr) flushes one page
    40. 

  40.  *  - flush_tlb_range(mm, start, end) flushes a range of pages
    41. 

  41.  *  - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
    42. 

  42.  */
    43. 

  43. #define flush_tlb_all()				\
    44. 

  44. do {						\
    45. 

  45. 	preempt_disable();			\
    46. 

  46. 	__flush_tlb_all();			\
    47. 

  47. 	preempt_enable();			\
    48. 

  48. } while (0)
    49. 

  49. 

  50. #define flush_tlb_mm(mm)			\
    51. 

  51. do {						\
    52. 

  52. 	preempt_disable();			\
    53. 

  53. 	__flush_tlb_all();			\
    54. 

  54. 	preempt_enable();			\
    55. 

  55. } while (0)
    56. 

  56. 

  57. #define flush_tlb_range(vma, start, end)			\
    58. 

  58. do {								\
    59. 

  59. 	unsigned long __s __attribute__((unused)) = (start);	\
    60. 

  60. 	unsigned long __e __attribute__((unused)) = (end);	\
    61. 

  61. 	preempt_disable();					\
    62. 

  62. 	__flush_tlb_all();					\
    63. 

  63. 	preempt_enable();					\
    64. 

  64. } while (0)
    65. 

  65. 

  66. 

  67. #define __flush_tlb_global()			flush_tlb_all()
    68. 

  68. #define flush_tlb()				flush_tlb_all()
    69. 

  69. #define flush_tlb_kernel_range(start, end)			\
    70. 

  70. do {								\
    71. 

  71. 	unsigned long __s __attribute__((unused)) = (start);	\
    72. 

  72. 	unsigned long __e __attribute__((unused)) = (end);	\
    73. 

  73. 	flush_tlb_all();					\
    74. 

  74. } while (0)
    75. 

  75. 

  76. extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr);
    77. 

  77. 

  78. #define flush_tlb_pgtables(mm, start, end)	do {} while (0)
    79. 

  79. 

  80. #endif /* _ASM_TLBFLUSH_H */
    81.