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include
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asm-m68knommu
/
cacheflush.h

cacheflush.h 2.2 KB
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  1. #ifndef _M68KNOMMU_CACHEFLUSH_H
    2. 

  2. #define _M68KNOMMU_CACHEFLUSH_H
    3. 

  3. 

  4. /*
    5. 

  5.  * (C) Copyright 2000-2002, Greg Ungerer <gerg@snapgear.com>
    6. 

  6.  */
    7. 

  7. #include <linux/mm.h>
    8. 

  8. 

  9. #define flush_cache_all()			__flush_cache_all()
    10. 

  10. #define flush_cache_mm(mm)			do { } while (0)
    11. 

  11. #define flush_cache_range(vma, start, end)	do { } while (0)
    12. 

  12. #define flush_cache_page(vma, vmaddr, pfn)	do { } while (0)
    13. 

  13. #define flush_dcache_range(start,len)		do { } while (0)
    14. 

  14. #define flush_dcache_page(page)			do { } while (0)
    15. 

  15. #define flush_dcache_mmap_lock(mapping)		do { } while (0)
    16. 

  16. #define flush_dcache_mmap_unlock(mapping)	do { } while (0)
    17. 

  17. #define flush_icache_range(start,len)		__flush_cache_all()
    18. 

  18. #define flush_icache_page(vma,pg)		do { } while (0)
    19. 

  19. #define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
    20. 

  20. #define flush_cache_vmap(start, end)		flush_cache_all()
    21. 

  21. #define flush_cache_vunmap(start, end)		flush_cache_all()
    22. 

  22. 

  23. #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
    24. 

  24. 	memcpy(dst, src, len)
    25. 

  25. #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
    26. 

  26. 	memcpy(dst, src, len)
    27. 

  27. 

  28. extern inline void __flush_cache_all(void)
    29. 

  29. {
    30. 

  30. #ifdef CONFIG_M5407
    31. 

  31. 	/*
    32. 

  32. 	 *	Use cpushl to push and invalidate all cache lines.
    33. 

  33. 	 *	Gas doesn't seem to know how to generate the ColdFire
    34. 

  34. 	 *	cpushl instruction... Oh well, bit stuff it for now.
    35. 

  35. 	 */
    36. 

  36. 	__asm__ __volatile__ (
    37. 

  37. 		"nop\n\t"
    38. 

  38. 		"clrl	%%d0\n\t"
    39. 

  39. 		"1:\n\t"
    40. 

  40. 		"movel	%%d0,%%a0\n\t"
    41. 

  41. 		"2:\n\t"
    42. 

  42. 		".word	0xf468\n\t"
    43. 

  43. 		"addl	#0x10,%%a0\n\t"
    44. 

  44. 		"cmpl	#0x00000800,%%a0\n\t"
    45. 

  45. 		"blt	2b\n\t"
    46. 

  46. 		"addql	#1,%%d0\n\t"
    47. 

  47. 		"cmpil	#4,%%d0\n\t"
    48. 

  48. 		"bne	1b\n\t"
    49. 

  49. 		"movel	#0xb6088500,%%d0\n\t"
    50. 

  50. 		"movec	%%d0,%%CACR\n\t"
    51. 

  51. 		: : : "d0", "a0" );
    52. 

  52. #endif /* CONFIG_M5407 */
    53. 

  53. #ifdef CONFIG_M5272
    54. 

  54. 	__asm__ __volatile__ (
    55. 

  55.         	"movel	#0x01000000, %%d0\n\t"
    56. 

  56.         	"movec	%%d0, %%CACR\n\t"
    57. 

  57. 		"nop\n\t"
    58. 

  58.         	"movel	#0x80000100, %%d0\n\t"
    59. 

  59.         	"movec	%%d0, %%CACR\n\t"
    60. 

  60. 		"nop\n\t"
    61. 

  61. 		: : : "d0" );
    62. 

  62. #endif /* CONFIG_M5272 */
    63. 

  63. #if 0 /* CONFIG_M5249 */
    64. 

  64. 	__asm__ __volatile__ (
    65. 

  65.         	"movel	#0x01000000, %%d0\n\t"
    66. 

  66.         	"movec	%%d0, %%CACR\n\t"
    67. 

  67. 		"nop\n\t"
    68. 

  68.         	"movel	#0xa0000200, %%d0\n\t"
    69. 

  69.         	"movec	%%d0, %%CACR\n\t"
    70. 

  70. 		"nop\n\t"
    71. 

  71. 		: : : "d0" );
    72. 

  72. #endif /* CONFIG_M5249 */
    73. 

  73. }
    74. 

  74. 

  75. #endif /* _M68KNOMMU_CACHEFLUSH_H */
    76.