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linux
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arch
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arm64
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include
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asm
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cpucaps.h

cpucaps.h 2.0 KB
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  1. /* SPDX-License-Identifier: GPL-2.0-only */
    2. 

  2. 

  3. #ifndef __ASM_CPUCAPS_H
    4. 

  4. #define __ASM_CPUCAPS_H
    5. 

  5. 

  6. #include <asm/cpucap-defs.h>
    7. 

  7. 

  8. #ifndef __ASSEMBLY__
    9. 

  9. #include <linux/types.h>
    10. 

  10. /*
    11. 

  11.  * Check whether a cpucap is possible at compiletime.
    12. 

  12.  */
    13. 

  13. static __always_inline bool
    14. 

  14. cpucap_is_possible(const unsigned int cap)
    15. 

  15. {
    16. 

  16. 	compiletime_assert(__builtin_constant_p(cap),
    17. 

  17. 			   "cap must be a constant");
    18. 

  18. 	compiletime_assert(cap < ARM64_NCAPS,
    19. 

  19. 			   "cap must be < ARM64_NCAPS");
    20. 

  20. 

  21. 	switch (cap) {
    22. 

  22. 	case ARM64_HAS_PAN:
    23. 

  23. 		return IS_ENABLED(CONFIG_ARM64_PAN);
    24. 

  24. 	case ARM64_HAS_EPAN:
    25. 

  25. 		return IS_ENABLED(CONFIG_ARM64_EPAN);
    26. 

  26. 	case ARM64_SVE:
    27. 

  27. 		return IS_ENABLED(CONFIG_ARM64_SVE);
    28. 

  28. 	case ARM64_SME:
    29. 

  29. 	case ARM64_SME2:
    30. 

  30. 	case ARM64_SME_FA64:
    31. 

  31. 		return IS_ENABLED(CONFIG_ARM64_SME);
    32. 

  32. 	case ARM64_HAS_CNP:
    33. 

  33. 		return IS_ENABLED(CONFIG_ARM64_CNP);
    34. 

  34. 	case ARM64_HAS_ADDRESS_AUTH:
    35. 

  35. 	case ARM64_HAS_GENERIC_AUTH:
    36. 

  36. 		return IS_ENABLED(CONFIG_ARM64_PTR_AUTH);
    37. 

  37. 	case ARM64_HAS_GIC_PRIO_MASKING:
    38. 

  38. 		return IS_ENABLED(CONFIG_ARM64_PSEUDO_NMI);
    39. 

  39. 	case ARM64_MTE:
    40. 

  40. 		return IS_ENABLED(CONFIG_ARM64_MTE);
    41. 

  41. 	case ARM64_BTI:
    42. 

  42. 		return IS_ENABLED(CONFIG_ARM64_BTI);
    43. 

  43. 	case ARM64_HAS_TLB_RANGE:
    44. 

  44. 		return IS_ENABLED(CONFIG_ARM64_TLB_RANGE);
    45. 

  45. 	case ARM64_UNMAP_KERNEL_AT_EL0:
    46. 

  46. 		return IS_ENABLED(CONFIG_UNMAP_KERNEL_AT_EL0);
    47. 

  47. 	case ARM64_WORKAROUND_843419:
    48. 

  48. 		return IS_ENABLED(CONFIG_ARM64_ERRATUM_843419);
    49. 

  49. 	case ARM64_WORKAROUND_1742098:
    50. 

  50. 		return IS_ENABLED(CONFIG_ARM64_ERRATUM_1742098);
    51. 

  51. 	case ARM64_WORKAROUND_2645198:
    52. 

  52. 		return IS_ENABLED(CONFIG_ARM64_ERRATUM_2645198);
    53. 

  53. 	case ARM64_WORKAROUND_2658417:
    54. 

  54. 		return IS_ENABLED(CONFIG_ARM64_ERRATUM_2658417);
    55. 

  55. 	case ARM64_WORKAROUND_CAVIUM_23154:
    56. 

  56. 		return IS_ENABLED(CONFIG_CAVIUM_ERRATUM_23154);
    57. 

  57. 	case ARM64_WORKAROUND_NVIDIA_CARMEL_CNP:
    58. 

  58. 		return IS_ENABLED(CONFIG_NVIDIA_CARMEL_CNP_ERRATUM);
    59. 

  59. 	case ARM64_WORKAROUND_REPEAT_TLBI:
    60. 

  60. 		return IS_ENABLED(CONFIG_ARM64_WORKAROUND_REPEAT_TLBI);
    61. 

  61. 	case ARM64_WORKAROUND_SPECULATIVE_SSBS:
    62. 

  62. 		return IS_ENABLED(CONFIG_ARM64_ERRATUM_3194386);
    63. 

  63. 	}
    64. 

  64. 

  65. 	return true;
    66. 

  66. }
    67. 

  67. #endif /* __ASSEMBLY__ */
    68. 

  68. 

  69. #endif /* __ASM_CPUCAPS_H */
    70.