arch/arm64/include/asm/cpucaps.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #ifndef __ASM_CPUCAPS_H
   4 #define __ASM_CPUCAPS_H
   5
   6 #include <asm/cpucap-defs.h>
   7
   8 #ifndef __ASSEMBLY__
   9 #include <linux/types.h>
  10 /*
  11  * Check whether a cpucap is possible at compiletime.
  12  */
  13 static __always_inline bool
  14 cpucap_is_possible(const unsigned int cap)
  15 {
  16         compiletime_assert(__builtin_constant_p(cap),
  17                            "cap must be a constant");
  18         compiletime_assert(cap < ARM64_NCAPS,
  19                            "cap must be < ARM64_NCAPS");
  20
  21         switch (cap) {
  22         case ARM64_HAS_PAN:
  23                 return IS_ENABLED(CONFIG_ARM64_PAN);
  24         case ARM64_HAS_EPAN:
  25                 return IS_ENABLED(CONFIG_ARM64_EPAN);
  26         case ARM64_SVE:
  27                 return IS_ENABLED(CONFIG_ARM64_SVE);
  28         case ARM64_SME:
  29         case ARM64_SME2:
  30         case ARM64_SME_FA64:
  31                 return IS_ENABLED(CONFIG_ARM64_SME);
  32         case ARM64_HAS_CNP:
  33                 return IS_ENABLED(CONFIG_ARM64_CNP);
  34         case ARM64_HAS_ADDRESS_AUTH:
  35         case ARM64_HAS_GENERIC_AUTH:
  36                 return IS_ENABLED(CONFIG_ARM64_PTR_AUTH);
  37         case ARM64_HAS_GIC_PRIO_MASKING:
  38                 return IS_ENABLED(CONFIG_ARM64_PSEUDO_NMI);
  39         case ARM64_MTE:
  40                 return IS_ENABLED(CONFIG_ARM64_MTE);
  41         case ARM64_BTI:
  42                 return IS_ENABLED(CONFIG_ARM64_BTI);
  43         case ARM64_HAS_TLB_RANGE:
  44                 return IS_ENABLED(CONFIG_ARM64_TLB_RANGE);
  45         case ARM64_UNMAP_KERNEL_AT_EL0:
  46                 return IS_ENABLED(CONFIG_UNMAP_KERNEL_AT_EL0);
  47         case ARM64_WORKAROUND_843419:
  48                 return IS_ENABLED(CONFIG_ARM64_ERRATUM_843419);
  49         case ARM64_WORKAROUND_1742098:
  50                 return IS_ENABLED(CONFIG_ARM64_ERRATUM_1742098);
  51         case ARM64_WORKAROUND_2645198:
  52                 return IS_ENABLED(CONFIG_ARM64_ERRATUM_2645198);
  53         case ARM64_WORKAROUND_2658417:
  54                 return IS_ENABLED(CONFIG_ARM64_ERRATUM_2658417);
  55         case ARM64_WORKAROUND_CAVIUM_23154:
  56                 return IS_ENABLED(CONFIG_CAVIUM_ERRATUM_23154);
  57         case ARM64_WORKAROUND_NVIDIA_CARMEL_CNP:
  58                 return IS_ENABLED(CONFIG_NVIDIA_CARMEL_CNP_ERRATUM);
  59         case ARM64_WORKAROUND_REPEAT_TLBI:
  60                 return IS_ENABLED(CONFIG_ARM64_WORKAROUND_REPEAT_TLBI);
  61         }
  62
  63         return true;
  64 }
  65 #endif /* __ASSEMBLY__ */
  66
  67 #endif /* __ASM_CPUCAPS_H */