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include
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asm-sh
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tlb_64.h

tlb_64.h 2.1 KB
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  1. /*
    2. 

  2.  * include/asm-sh/tlb_64.h
    3. 

  3.  *
    4. 

  4.  * Copyright (C) 2003  Paul Mundt
    5. 

  5.  *
    6. 

  6.  * This file is subject to the terms and conditions of the GNU General Public
    7. 

  7.  * License.  See the file "COPYING" in the main directory of this archive
    8. 

  8.  * for more details.
    9. 

  9.  */
    10. 

  10. #ifndef __ASM_SH_TLB_64_H
    11. 

  11. #define __ASM_SH_TLB_64_H
    12. 

  12. 

  13. /* ITLB defines */
    14. 

  14. #define ITLB_FIXED	0x00000000	/* First fixed ITLB, see head.S */
    15. 

  15. #define ITLB_LAST_VAR_UNRESTRICTED	0x000003F0	/* Last ITLB */
    16. 

  16. 

  17. /* DTLB defines */
    18. 

  18. #define DTLB_FIXED	0x00800000	/* First fixed DTLB, see head.S */
    19. 

  19. #define DTLB_LAST_VAR_UNRESTRICTED	0x008003F0	/* Last DTLB */
    20. 

  20. 

  21. #ifndef __ASSEMBLY__
    22. 

  22. 

  23. /**
    24. 

  24.  * for_each_dtlb_entry
    25. 

  25.  *
    26. 

  26.  * @tlb:	TLB entry
    27. 

  27.  *
    28. 

  28.  * Iterate over free (non-wired) DTLB entries
    29. 

  29.  */
    30. 

  30. #define for_each_dtlb_entry(tlb)		\
    31. 

  31. 	for (tlb  = cpu_data->dtlb.first;	\
    32. 

  32. 	     tlb <= cpu_data->dtlb.last;	\
    33. 

  33. 	     tlb += cpu_data->dtlb.step)
    34. 

  34. 

  35. /**
    36. 

  36.  * for_each_itlb_entry
    37. 

  37.  *
    38. 

  38.  * @tlb:	TLB entry
    39. 

  39.  *
    40. 

  40.  * Iterate over free (non-wired) ITLB entries
    41. 

  41.  */
    42. 

  42. #define for_each_itlb_entry(tlb)		\
    43. 

  43. 	for (tlb  = cpu_data->itlb.first;	\
    44. 

  44. 	     tlb <= cpu_data->itlb.last;	\
    45. 

  45. 	     tlb += cpu_data->itlb.step)
    46. 

  46. 

  47. /**
    48. 

  48.  * __flush_tlb_slot
    49. 

  49.  *
    50. 

  50.  * @slot:	Address of TLB slot.
    51. 

  51.  *
    52. 

  52.  * Flushes TLB slot @slot.
    53. 

  53.  */
    54. 

  54. static inline void __flush_tlb_slot(unsigned long long slot)
    55. 

  55. {
    56. 

  56. 	__asm__ __volatile__ ("putcfg %0, 0, r63\n" : : "r" (slot));
    57. 

  57. }
    58. 

  58. 

  59. #ifdef CONFIG_MMU
    60. 

  60. /* arch/sh64/mm/tlb.c */
    61. 

  61. int sh64_tlb_init(void);
    62. 

  62. unsigned long long sh64_next_free_dtlb_entry(void);
    63. 

  63. unsigned long long sh64_get_wired_dtlb_entry(void);
    64. 

  64. int sh64_put_wired_dtlb_entry(unsigned long long entry);
    65. 

  65. void sh64_setup_tlb_slot(unsigned long long config_addr, unsigned long eaddr,
    66. 

  66. 			 unsigned long asid, unsigned long paddr);
    67. 

  67. void sh64_teardown_tlb_slot(unsigned long long config_addr);
    68. 

  68. #else
    69. 

  69. #define sh64_tlb_init()					do { } while (0)
    70. 

  70. #define sh64_next_free_dtlb_entry()			(0)
    71. 

  71. #define sh64_get_wired_dtlb_entry()			(0)
    72. 

  72. #define sh64_put_wired_dtlb_entry(entry)		do { } while (0)
    73. 

  73. #define sh64_setup_tlb_slot(conf, virt, asid, phys)	do { } while (0)
    74. 

  74. #define sh64_teardown_tlb_slot(addr)			do { } while (0)
    75. 

  75. #endif /* CONFIG_MMU */
    76. 

  76. #endif /* __ASSEMBLY__ */
    77. 

  77. #endif /* __ASM_SH_TLB_64_H */
    78.