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arch
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mips
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mm
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page-funcs.S

page-funcs.S 1.4 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.  * Micro-assembler generated clear_page/copy_page functions.
    7. 

  7.  *
    8. 

  8.  * Copyright (C) 2012  MIPS Technologies, Inc.
    9. 

  9.  * Copyright (C) 2012  Ralf Baechle <[email protected]>
    10. 

  10.  */
    11. 

  11. #include <asm/asm.h>
    12. 

  12. #include <asm/export.h>
    13. 

  13. #include <asm/regdef.h>
    14. 

  14. 

  15. #ifdef CONFIG_SIBYTE_DMA_PAGEOPS
    16. 

  16. #define cpu_clear_page_function_name	clear_page_cpu
    17. 

  17. #define cpu_copy_page_function_name	copy_page_cpu
    18. 

  18. #else
    19. 

  19. #define cpu_clear_page_function_name	clear_page
    20. 

  20. #define cpu_copy_page_function_name	copy_page
    21. 

  21. #endif
    22. 

  22. 

  23. /*
    24. 

  24.  * Maximum sizes:
    25. 

  25.  *
    26. 

  26.  * R4000 128 bytes S-cache:		0x058 bytes
    27. 

  27.  * R4600 v1.7:				0x05c bytes
    28. 

  28.  * R4600 v2.0:				0x060 bytes
    29. 

  29.  * With prefetching, 16 word strides	0x120 bytes
    30. 

  30.  */
    31. 

  31. EXPORT(__clear_page_start)
    32. 

  32. LEAF(cpu_clear_page_function_name)
    33. 

  33. EXPORT_SYMBOL(cpu_clear_page_function_name)
    34. 

  34. 1:	j	1b		/* Dummy, will be replaced. */
    35. 

  35. 	.space 288
    36. 

  36. END(cpu_clear_page_function_name)
    37. 

  37. EXPORT(__clear_page_end)
    38. 

  38. 

  39. /*
    40. 

  40.  * Maximum sizes:
    41. 

  41.  *
    42. 

  42.  * R4000 128 bytes S-cache:		0x11c bytes
    43. 

  43.  * R4600 v1.7:				0x080 bytes
    44. 

  44.  * R4600 v2.0:				0x07c bytes
    45. 

  45.  * With prefetching, 16 word strides	0x540 bytes
    46. 

  46.  */
    47. 

  47. EXPORT(__copy_page_start)
    48. 

  48. LEAF(cpu_copy_page_function_name)
    49. 

  49. EXPORT_SYMBOL(cpu_copy_page_function_name)
    50. 

  50. 1:	j	1b		/* Dummy, will be replaced. */
    51. 

  51. 	.space 1344
    52. 

  52. END(cpu_copy_page_function_name)
    53. 

  53. EXPORT(__copy_page_end)
    54.