include/asm/hwcap.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * Copyright (C) 2012 ARM Ltd.
0004  */
0005 #ifndef __ASM_HWCAP_H
0006 #define __ASM_HWCAP_H
0007
0008 #include <uapi/asm/hwcap.h>
0009 #include <asm/cpufeature.h>
0010
0011 #define COMPAT_HWCAP_SWP    (1 << 0)
0012 #define COMPAT_HWCAP_HALF   (1 << 1)
0013 #define COMPAT_HWCAP_THUMB  (1 << 2)
0014 #define COMPAT_HWCAP_26BIT  (1 << 3)
0015 #define COMPAT_HWCAP_FAST_MULT  (1 << 4)
0016 #define COMPAT_HWCAP_FPA    (1 << 5)
0017 #define COMPAT_HWCAP_VFP    (1 << 6)
0018 #define COMPAT_HWCAP_EDSP   (1 << 7)
0019 #define COMPAT_HWCAP_JAVA   (1 << 8)
0020 #define COMPAT_HWCAP_IWMMXT (1 << 9)
0021 #define COMPAT_HWCAP_CRUNCH (1 << 10) /* Obsolete */
0022 #define COMPAT_HWCAP_THUMBEE    (1 << 11)
0023 #define COMPAT_HWCAP_NEON   (1 << 12)
0024 #define COMPAT_HWCAP_VFPv3  (1 << 13)
0025 #define COMPAT_HWCAP_VFPV3D16   (1 << 14)
0026 #define COMPAT_HWCAP_TLS    (1 << 15)
0027 #define COMPAT_HWCAP_VFPv4  (1 << 16)
0028 #define COMPAT_HWCAP_IDIVA  (1 << 17)
0029 #define COMPAT_HWCAP_IDIVT  (1 << 18)
0030 #define COMPAT_HWCAP_IDIV   (COMPAT_HWCAP_IDIVA|COMPAT_HWCAP_IDIVT)
0031 #define COMPAT_HWCAP_VFPD32 (1 << 19)
0032 #define COMPAT_HWCAP_LPAE   (1 << 20)
0033 #define COMPAT_HWCAP_EVTSTRM    (1 << 21)
0034
0035 #define COMPAT_HWCAP2_AES   (1 << 0)
0036 #define COMPAT_HWCAP2_PMULL (1 << 1)
0037 #define COMPAT_HWCAP2_SHA1  (1 << 2)
0038 #define COMPAT_HWCAP2_SHA2  (1 << 3)
0039 #define COMPAT_HWCAP2_CRC32 (1 << 4)
0040
0041 #ifndef __ASSEMBLY__
0042 #include <linux/log2.h>
0043
0044 /*
0045  * For userspace we represent hwcaps as a collection of HWCAP{,2}_x bitfields
0046  * as described in uapi/asm/hwcap.h. For the kernel we represent hwcaps as
0047  * natural numbers (in a single range of size MAX_CPU_FEATURES) defined here
0048  * with prefix KERNEL_HWCAP_ mapped to their HWCAP{,2}_x counterpart.
0049  *
0050  * Hwcaps should be set and tested within the kernel via the
0051  * cpu_{set,have}_named_feature(feature) where feature is the unique suffix
0052  * of KERNEL_HWCAP_{feature}.
0053  */
0054 #define __khwcap_feature(x)     const_ilog2(HWCAP_ ## x)
0055 #define KERNEL_HWCAP_FP         __khwcap_feature(FP)
0056 #define KERNEL_HWCAP_ASIMD      __khwcap_feature(ASIMD)
0057 #define KERNEL_HWCAP_EVTSTRM        __khwcap_feature(EVTSTRM)
0058 #define KERNEL_HWCAP_AES        __khwcap_feature(AES)
0059 #define KERNEL_HWCAP_PMULL      __khwcap_feature(PMULL)
0060 #define KERNEL_HWCAP_SHA1       __khwcap_feature(SHA1)
0061 #define KERNEL_HWCAP_SHA2       __khwcap_feature(SHA2)
0062 #define KERNEL_HWCAP_CRC32      __khwcap_feature(CRC32)
0063 #define KERNEL_HWCAP_ATOMICS        __khwcap_feature(ATOMICS)
0064 #define KERNEL_HWCAP_FPHP       __khwcap_feature(FPHP)
0065 #define KERNEL_HWCAP_ASIMDHP        __khwcap_feature(ASIMDHP)
0066 #define KERNEL_HWCAP_CPUID      __khwcap_feature(CPUID)
0067 #define KERNEL_HWCAP_ASIMDRDM       __khwcap_feature(ASIMDRDM)
0068 #define KERNEL_HWCAP_JSCVT      __khwcap_feature(JSCVT)
0069 #define KERNEL_HWCAP_FCMA       __khwcap_feature(FCMA)
0070 #define KERNEL_HWCAP_LRCPC      __khwcap_feature(LRCPC)
0071 #define KERNEL_HWCAP_DCPOP      __khwcap_feature(DCPOP)
0072 #define KERNEL_HWCAP_SHA3       __khwcap_feature(SHA3)
0073 #define KERNEL_HWCAP_SM3        __khwcap_feature(SM3)
0074 #define KERNEL_HWCAP_SM4        __khwcap_feature(SM4)
0075 #define KERNEL_HWCAP_ASIMDDP        __khwcap_feature(ASIMDDP)
0076 #define KERNEL_HWCAP_SHA512     __khwcap_feature(SHA512)
0077 #define KERNEL_HWCAP_SVE        __khwcap_feature(SVE)
0078 #define KERNEL_HWCAP_ASIMDFHM       __khwcap_feature(ASIMDFHM)
0079 #define KERNEL_HWCAP_DIT        __khwcap_feature(DIT)
0080 #define KERNEL_HWCAP_USCAT      __khwcap_feature(USCAT)
0081 #define KERNEL_HWCAP_ILRCPC     __khwcap_feature(ILRCPC)
0082 #define KERNEL_HWCAP_FLAGM      __khwcap_feature(FLAGM)
0083 #define KERNEL_HWCAP_SSBS       __khwcap_feature(SSBS)
0084 #define KERNEL_HWCAP_SB         __khwcap_feature(SB)
0085 #define KERNEL_HWCAP_PACA       __khwcap_feature(PACA)
0086 #define KERNEL_HWCAP_PACG       __khwcap_feature(PACG)
0087
0088 #define __khwcap2_feature(x)        (const_ilog2(HWCAP2_ ## x) + 64)
0089 #define KERNEL_HWCAP_DCPODP     __khwcap2_feature(DCPODP)
0090 #define KERNEL_HWCAP_SVE2       __khwcap2_feature(SVE2)
0091 #define KERNEL_HWCAP_SVEAES     __khwcap2_feature(SVEAES)
0092 #define KERNEL_HWCAP_SVEPMULL       __khwcap2_feature(SVEPMULL)
0093 #define KERNEL_HWCAP_SVEBITPERM     __khwcap2_feature(SVEBITPERM)
0094 #define KERNEL_HWCAP_SVESHA3        __khwcap2_feature(SVESHA3)
0095 #define KERNEL_HWCAP_SVESM4     __khwcap2_feature(SVESM4)
0096 #define KERNEL_HWCAP_FLAGM2     __khwcap2_feature(FLAGM2)
0097 #define KERNEL_HWCAP_FRINT      __khwcap2_feature(FRINT)
0098 #define KERNEL_HWCAP_SVEI8MM        __khwcap2_feature(SVEI8MM)
0099 #define KERNEL_HWCAP_SVEF32MM       __khwcap2_feature(SVEF32MM)
0100 #define KERNEL_HWCAP_SVEF64MM       __khwcap2_feature(SVEF64MM)
0101 #define KERNEL_HWCAP_SVEBF16        __khwcap2_feature(SVEBF16)
0102 #define KERNEL_HWCAP_I8MM       __khwcap2_feature(I8MM)
0103 #define KERNEL_HWCAP_BF16       __khwcap2_feature(BF16)
0104 #define KERNEL_HWCAP_DGH        __khwcap2_feature(DGH)
0105 #define KERNEL_HWCAP_RNG        __khwcap2_feature(RNG)
0106 #define KERNEL_HWCAP_BTI        __khwcap2_feature(BTI)
0107 #define KERNEL_HWCAP_MTE        __khwcap2_feature(MTE)
0108 #define KERNEL_HWCAP_ECV        __khwcap2_feature(ECV)
0109 #define KERNEL_HWCAP_AFP        __khwcap2_feature(AFP)
0110 #define KERNEL_HWCAP_RPRES      __khwcap2_feature(RPRES)
0111 #define KERNEL_HWCAP_MTE3       __khwcap2_feature(MTE3)
0112 #define KERNEL_HWCAP_SME        __khwcap2_feature(SME)
0113 #define KERNEL_HWCAP_SME_I16I64     __khwcap2_feature(SME_I16I64)
0114 #define KERNEL_HWCAP_SME_F64F64     __khwcap2_feature(SME_F64F64)
0115 #define KERNEL_HWCAP_SME_I8I32      __khwcap2_feature(SME_I8I32)
0116 #define KERNEL_HWCAP_SME_F16F32     __khwcap2_feature(SME_F16F32)
0117 #define KERNEL_HWCAP_SME_B16F32     __khwcap2_feature(SME_B16F32)
0118 #define KERNEL_HWCAP_SME_F32F32     __khwcap2_feature(SME_F32F32)
0119 #define KERNEL_HWCAP_SME_FA64       __khwcap2_feature(SME_FA64)
0120 #define KERNEL_HWCAP_WFXT       __khwcap2_feature(WFXT)
0121 #define KERNEL_HWCAP_EBF16      __khwcap2_feature(EBF16)
0122
0123 /*
0124  * This yields a mask that user programs can use to figure out what
0125  * instruction set this cpu supports.
0126  */
0127 #define ELF_HWCAP       cpu_get_elf_hwcap()
0128 #define ELF_HWCAP2      cpu_get_elf_hwcap2()
0129
0130 #ifdef CONFIG_COMPAT
0131 #define COMPAT_ELF_HWCAP    (compat_elf_hwcap)
0132 #define COMPAT_ELF_HWCAP2   (compat_elf_hwcap2)
0133 extern unsigned int compat_elf_hwcap, compat_elf_hwcap2;
0134 #endif
0135
0136 enum {
0137     CAP_HWCAP = 1,
0138 #ifdef CONFIG_COMPAT
0139     CAP_COMPAT_HWCAP,
0140     CAP_COMPAT_HWCAP2,
0141 #endif
0142 };
0143
0144 #endif
0145 #endif