/arch/arm64/include/asm/hwcap.h

https://gitlab.com/dieselnutjob/linux-next · C Header · 134 lines · 106 code · 10 blank · 18 comment · 0 complexity · 100f3be4a287ece8bb945acec19644d4 MD5 · raw file 

    

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

  2. /*
    3. 

  3.  * Copyright (C) 2012 ARM Ltd.
    4. 

  4.  */
    5. 

  5. #ifndef __ASM_HWCAP_H
    6. 

  6. #define __ASM_HWCAP_H
    7. 

  7. 

  8. #include <uapi/asm/hwcap.h>
    9. 

  9. #include <asm/cpufeature.h>
    10. 

  10. 

  11. #define COMPAT_HWCAP_SWP	(1 << 0)
    12. 

  12. #define COMPAT_HWCAP_HALF	(1 << 1)
    13. 

  13. #define COMPAT_HWCAP_THUMB	(1 << 2)
    14. 

  14. #define COMPAT_HWCAP_26BIT	(1 << 3)
    15. 

  15. #define COMPAT_HWCAP_FAST_MULT	(1 << 4)
    16. 

  16. #define COMPAT_HWCAP_FPA	(1 << 5)
    17. 

  17. #define COMPAT_HWCAP_VFP	(1 << 6)
    18. 

  18. #define COMPAT_HWCAP_EDSP	(1 << 7)
    19. 

  19. #define COMPAT_HWCAP_JAVA	(1 << 8)
    20. 

  20. #define COMPAT_HWCAP_IWMMXT	(1 << 9)
    21. 

  21. #define COMPAT_HWCAP_CRUNCH	(1 << 10) /* Obsolete */
    22. 

  22. #define COMPAT_HWCAP_THUMBEE	(1 << 11)
    23. 

  23. #define COMPAT_HWCAP_NEON	(1 << 12)
    24. 

  24. #define COMPAT_HWCAP_VFPv3	(1 << 13)
    25. 

  25. #define COMPAT_HWCAP_VFPV3D16	(1 << 14)
    26. 

  26. #define COMPAT_HWCAP_TLS	(1 << 15)
    27. 

  27. #define COMPAT_HWCAP_VFPv4	(1 << 16)
    28. 

  28. #define COMPAT_HWCAP_IDIVA	(1 << 17)
    29. 

  29. #define COMPAT_HWCAP_IDIVT	(1 << 18)
    30. 

  30. #define COMPAT_HWCAP_IDIV	(COMPAT_HWCAP_IDIVA|COMPAT_HWCAP_IDIVT)
    31. 

  31. #define COMPAT_HWCAP_VFPD32	(1 << 19)
    32. 

  32. #define COMPAT_HWCAP_LPAE	(1 << 20)
    33. 

  33. #define COMPAT_HWCAP_EVTSTRM	(1 << 21)
    34. 

  34. 

  35. #define COMPAT_HWCAP2_AES	(1 << 0)
    36. 

  36. #define COMPAT_HWCAP2_PMULL	(1 << 1)
    37. 

  37. #define COMPAT_HWCAP2_SHA1	(1 << 2)
    38. 

  38. #define COMPAT_HWCAP2_SHA2	(1 << 3)
    39. 

  39. #define COMPAT_HWCAP2_CRC32	(1 << 4)
    40. 

  40. 

  41. #ifndef __ASSEMBLY__
    42. 

  42. #include <linux/log2.h>
    43. 

  43. 

  44. /*
    45. 

  45.  * For userspace we represent hwcaps as a collection of HWCAP{,2}_x bitfields
    46. 

  46.  * as described in uapi/asm/hwcap.h. For the kernel we represent hwcaps as
    47. 

  47.  * natural numbers (in a single range of size MAX_CPU_FEATURES) defined here
    48. 

  48.  * with prefix KERNEL_HWCAP_ mapped to their HWCAP{,2}_x counterpart.
    49. 

  49.  *
    50. 

  50.  * Hwcaps should be set and tested within the kernel via the
    51. 

  51.  * cpu_{set,have}_named_feature(feature) where feature is the unique suffix
    52. 

  52.  * of KERNEL_HWCAP_{feature}.
    53. 

  53.  */
    54. 

  54. #define __khwcap_feature(x)		const_ilog2(HWCAP_ ## x)
    55. 

  55. #define KERNEL_HWCAP_FP			__khwcap_feature(FP)
    56. 

  56. #define KERNEL_HWCAP_ASIMD		__khwcap_feature(ASIMD)
    57. 

  57. #define KERNEL_HWCAP_EVTSTRM		__khwcap_feature(EVTSTRM)
    58. 

  58. #define KERNEL_HWCAP_AES		__khwcap_feature(AES)
    59. 

  59. #define KERNEL_HWCAP_PMULL		__khwcap_feature(PMULL)
    60. 

  60. #define KERNEL_HWCAP_SHA1		__khwcap_feature(SHA1)
    61. 

  61. #define KERNEL_HWCAP_SHA2		__khwcap_feature(SHA2)
    62. 

  62. #define KERNEL_HWCAP_CRC32		__khwcap_feature(CRC32)
    63. 

  63. #define KERNEL_HWCAP_ATOMICS		__khwcap_feature(ATOMICS)
    64. 

  64. #define KERNEL_HWCAP_FPHP		__khwcap_feature(FPHP)
    65. 

  65. #define KERNEL_HWCAP_ASIMDHP		__khwcap_feature(ASIMDHP)
    66. 

  66. #define KERNEL_HWCAP_CPUID		__khwcap_feature(CPUID)
    67. 

  67. #define KERNEL_HWCAP_ASIMDRDM		__khwcap_feature(ASIMDRDM)
    68. 

  68. #define KERNEL_HWCAP_JSCVT		__khwcap_feature(JSCVT)
    69. 

  69. #define KERNEL_HWCAP_FCMA		__khwcap_feature(FCMA)
    70. 

  70. #define KERNEL_HWCAP_LRCPC		__khwcap_feature(LRCPC)
    71. 

  71. #define KERNEL_HWCAP_DCPOP		__khwcap_feature(DCPOP)
    72. 

  72. #define KERNEL_HWCAP_SHA3		__khwcap_feature(SHA3)
    73. 

  73. #define KERNEL_HWCAP_SM3		__khwcap_feature(SM3)
    74. 

  74. #define KERNEL_HWCAP_SM4		__khwcap_feature(SM4)
    75. 

  75. #define KERNEL_HWCAP_ASIMDDP		__khwcap_feature(ASIMDDP)
    76. 

  76. #define KERNEL_HWCAP_SHA512		__khwcap_feature(SHA512)
    77. 

  77. #define KERNEL_HWCAP_SVE		__khwcap_feature(SVE)
    78. 

  78. #define KERNEL_HWCAP_ASIMDFHM		__khwcap_feature(ASIMDFHM)
    79. 

  79. #define KERNEL_HWCAP_DIT		__khwcap_feature(DIT)
    80. 

  80. #define KERNEL_HWCAP_USCAT		__khwcap_feature(USCAT)
    81. 

  81. #define KERNEL_HWCAP_ILRCPC		__khwcap_feature(ILRCPC)
    82. 

  82. #define KERNEL_HWCAP_FLAGM		__khwcap_feature(FLAGM)
    83. 

  83. #define KERNEL_HWCAP_SSBS		__khwcap_feature(SSBS)
    84. 

  84. #define KERNEL_HWCAP_SB			__khwcap_feature(SB)
    85. 

  85. #define KERNEL_HWCAP_PACA		__khwcap_feature(PACA)
    86. 

  86. #define KERNEL_HWCAP_PACG		__khwcap_feature(PACG)
    87. 

  87. 

  88. #define __khwcap2_feature(x)		(const_ilog2(HWCAP2_ ## x) + 32)
    89. 

  89. #define KERNEL_HWCAP_DCPODP		__khwcap2_feature(DCPODP)
    90. 

  90. #define KERNEL_HWCAP_SVE2		__khwcap2_feature(SVE2)
    91. 

  91. #define KERNEL_HWCAP_SVEAES		__khwcap2_feature(SVEAES)
    92. 

  92. #define KERNEL_HWCAP_SVEPMULL		__khwcap2_feature(SVEPMULL)
    93. 

  93. #define KERNEL_HWCAP_SVEBITPERM		__khwcap2_feature(SVEBITPERM)
    94. 

  94. #define KERNEL_HWCAP_SVESHA3		__khwcap2_feature(SVESHA3)
    95. 

  95. #define KERNEL_HWCAP_SVESM4		__khwcap2_feature(SVESM4)
    96. 

  96. #define KERNEL_HWCAP_FLAGM2		__khwcap2_feature(FLAGM2)
    97. 

  97. #define KERNEL_HWCAP_FRINT		__khwcap2_feature(FRINT)
    98. 

  98. #define KERNEL_HWCAP_SVEI8MM		__khwcap2_feature(SVEI8MM)
    99. 

  99. #define KERNEL_HWCAP_SVEF32MM		__khwcap2_feature(SVEF32MM)
    100. 

  100. #define KERNEL_HWCAP_SVEF64MM		__khwcap2_feature(SVEF64MM)
    101. 

  101. #define KERNEL_HWCAP_SVEBF16		__khwcap2_feature(SVEBF16)
    102. 

  102. #define KERNEL_HWCAP_I8MM		__khwcap2_feature(I8MM)
    103. 

  103. #define KERNEL_HWCAP_BF16		__khwcap2_feature(BF16)
    104. 

  104. #define KERNEL_HWCAP_DGH		__khwcap2_feature(DGH)
    105. 

  105. #define KERNEL_HWCAP_RNG		__khwcap2_feature(RNG)
    106. 

  106. #define KERNEL_HWCAP_BTI		__khwcap2_feature(BTI)
    107. 

  107. #define KERNEL_HWCAP_MTE		__khwcap2_feature(MTE)
    108. 

  108. #define KERNEL_HWCAP_ECV		__khwcap2_feature(ECV)
    109. 

  109. #define KERNEL_HWCAP_AFP		__khwcap2_feature(AFP)
    110. 

  110. #define KERNEL_HWCAP_RPRES		__khwcap2_feature(RPRES)
    111. 

  111. 

  112. /*
    113. 

  113.  * This yields a mask that user programs can use to figure out what
    114. 

  114.  * instruction set this cpu supports.
    115. 

  115.  */
    116. 

  116. #define ELF_HWCAP		cpu_get_elf_hwcap()
    117. 

  117. #define ELF_HWCAP2		cpu_get_elf_hwcap2()
    118. 

  118. 

  119. #ifdef CONFIG_COMPAT
    120. 

  120. #define COMPAT_ELF_HWCAP	(compat_elf_hwcap)
    121. 

  121. #define COMPAT_ELF_HWCAP2	(compat_elf_hwcap2)
    122. 

  122. extern unsigned int compat_elf_hwcap, compat_elf_hwcap2;
    123. 

  123. #endif
    124. 

  124. 

  125. enum {
    126. 

  126. 	CAP_HWCAP = 1,
    127. 

  127. #ifdef CONFIG_COMPAT
    128. 

  128. 	CAP_COMPAT_HWCAP,
    129. 

  129. 	CAP_COMPAT_HWCAP2,
    130. 

  130. #endif
    131. 

  131. };
    132. 

  132. 

  133. #endif
    134. 

  134. #endif
    135.