1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2012 ARM Ltd. 4 */ 5 #ifndef __ASM_HWCAP_H 6 #define __ASM_HWCAP_H 7 8 #include <uapi/asm/hwcap.h> 9 #include <asm/cpufeature.h> 10 11 #define COMPAT_HWCAP_HALF (1 << 1) 12 #define COMPAT_HWCAP_THUMB (1 << 2) 13 #define COMPAT_HWCAP_FAST_MULT (1 << 4) 14 #define COMPAT_HWCAP_VFP (1 << 6) 15 #define COMPAT_HWCAP_EDSP (1 << 7) 16 #define COMPAT_HWCAP_NEON (1 << 12) 17 #define COMPAT_HWCAP_VFPv3 (1 << 13) 18 #define COMPAT_HWCAP_TLS (1 << 15) 19 #define COMPAT_HWCAP_VFPv4 (1 << 16) 20 #define COMPAT_HWCAP_IDIVA (1 << 17) 21 #define COMPAT_HWCAP_IDIVT (1 << 18) 22 #define COMPAT_HWCAP_IDIV (COMPAT_HWCAP_IDIVA|COMPAT_HWCAP_IDIVT) 23 #define COMPAT_HWCAP_LPAE (1 << 20) 24 #define COMPAT_HWCAP_EVTSTRM (1 << 21) 25 26 #define COMPAT_HWCAP2_AES (1 << 0) 27 #define COMPAT_HWCAP2_PMULL (1 << 1) 28 #define COMPAT_HWCAP2_SHA1 (1 << 2) 29 #define COMPAT_HWCAP2_SHA2 (1 << 3) 30 #define COMPAT_HWCAP2_CRC32 (1 << 4) 31 32 #ifndef __ASSEMBLY__ 33 #include <linux/log2.h> 34 35 /* 36 * For userspace we represent hwcaps as a collection of HWCAP{,2}_x bitfields 37 * as described in uapi/asm/hwcap.h. For the kernel we represent hwcaps as 38 * natural numbers (in a single range of size MAX_CPU_FEATURES) defined here 39 * with prefix KERNEL_HWCAP_ mapped to their HWCAP{,2}_x counterpart. 40 * 41 * Hwcaps should be set and tested within the kernel via the 42 * cpu_{set,have}_named_feature(feature) where feature is the unique suffix 43 * of KERNEL_HWCAP_{feature}. 44 */ 45 #define __khwcap_feature(x) const_ilog2(HWCAP_ ## x) 46 #define KERNEL_HWCAP_FP __khwcap_feature(FP) 47 #define KERNEL_HWCAP_ASIMD __khwcap_feature(ASIMD) 48 #define KERNEL_HWCAP_EVTSTRM __khwcap_feature(EVTSTRM) 49 #define KERNEL_HWCAP_AES __khwcap_feature(AES) 50 #define KERNEL_HWCAP_PMULL __khwcap_feature(PMULL) 51 #define KERNEL_HWCAP_SHA1 __khwcap_feature(SHA1) 52 #define KERNEL_HWCAP_SHA2 __khwcap_feature(SHA2) 53 #define KERNEL_HWCAP_CRC32 __khwcap_feature(CRC32) 54 #define KERNEL_HWCAP_ATOMICS __khwcap_feature(ATOMICS) 55 #define KERNEL_HWCAP_FPHP __khwcap_feature(FPHP) 56 #define KERNEL_HWCAP_ASIMDHP __khwcap_feature(ASIMDHP) 57 #define KERNEL_HWCAP_CPUID __khwcap_feature(CPUID) 58 #define KERNEL_HWCAP_ASIMDRDM __khwcap_feature(ASIMDRDM) 59 #define KERNEL_HWCAP_JSCVT __khwcap_feature(JSCVT) 60 #define KERNEL_HWCAP_FCMA __khwcap_feature(FCMA) 61 #define KERNEL_HWCAP_LRCPC __khwcap_feature(LRCPC) 62 #define KERNEL_HWCAP_DCPOP __khwcap_feature(DCPOP) 63 #define KERNEL_HWCAP_SHA3 __khwcap_feature(SHA3) 64 #define KERNEL_HWCAP_SM3 __khwcap_feature(SM3) 65 #define KERNEL_HWCAP_SM4 __khwcap_feature(SM4) 66 #define KERNEL_HWCAP_ASIMDDP __khwcap_feature(ASIMDDP) 67 #define KERNEL_HWCAP_SHA512 __khwcap_feature(SHA512) 68 #define KERNEL_HWCAP_SVE __khwcap_feature(SVE) 69 #define KERNEL_HWCAP_ASIMDFHM __khwcap_feature(ASIMDFHM) 70 #define KERNEL_HWCAP_DIT __khwcap_feature(DIT) 71 #define KERNEL_HWCAP_USCAT __khwcap_feature(USCAT) 72 #define KERNEL_HWCAP_ILRCPC __khwcap_feature(ILRCPC) 73 #define KERNEL_HWCAP_FLAGM __khwcap_feature(FLAGM) 74 #define KERNEL_HWCAP_SSBS __khwcap_feature(SSBS) 75 #define KERNEL_HWCAP_SB __khwcap_feature(SB) 76 #define KERNEL_HWCAP_PACA __khwcap_feature(PACA) 77 #define KERNEL_HWCAP_PACG __khwcap_feature(PACG) 78 79 #define __khwcap2_feature(x) (const_ilog2(HWCAP2_ ## x) + 32) 80 #define KERNEL_HWCAP_DCPODP __khwcap2_feature(DCPODP) 81 #define KERNEL_HWCAP_SVE2 __khwcap2_feature(SVE2) 82 #define KERNEL_HWCAP_SVEAES __khwcap2_feature(SVEAES) 83 #define KERNEL_HWCAP_SVEPMULL __khwcap2_feature(SVEPMULL) 84 #define KERNEL_HWCAP_SVEBITPERM __khwcap2_feature(SVEBITPERM) 85 #define KERNEL_HWCAP_SVESHA3 __khwcap2_feature(SVESHA3) 86 #define KERNEL_HWCAP_SVESM4 __khwcap2_feature(SVESM4) 87 #define KERNEL_HWCAP_FLAGM2 __khwcap2_feature(FLAGM2) 88 #define KERNEL_HWCAP_FRINT __khwcap2_feature(FRINT) 89 #define KERNEL_HWCAP_SVEI8MM __khwcap2_feature(SVEI8MM) 90 #define KERNEL_HWCAP_SVEF32MM __khwcap2_feature(SVEF32MM) 91 #define KERNEL_HWCAP_SVEF64MM __khwcap2_feature(SVEF64MM) 92 #define KERNEL_HWCAP_SVEBF16 __khwcap2_feature(SVEBF16) 93 #define KERNEL_HWCAP_I8MM __khwcap2_feature(I8MM) 94 #define KERNEL_HWCAP_BF16 __khwcap2_feature(BF16) 95 #define KERNEL_HWCAP_DGH __khwcap2_feature(DGH) 96 #define KERNEL_HWCAP_RNG __khwcap2_feature(RNG) 97 #define KERNEL_HWCAP_BTI __khwcap2_feature(BTI) 98 /* reserved for KERNEL_HWCAP_MTE __khwcap2_feature(MTE) */ 99 100 /* 101 * This yields a mask that user programs can use to figure out what 102 * instruction set this cpu supports. 103 */ 104 #define ELF_HWCAP cpu_get_elf_hwcap() 105 #define ELF_HWCAP2 cpu_get_elf_hwcap2() 106 107 #ifdef CONFIG_COMPAT 108 #define COMPAT_ELF_HWCAP (compat_elf_hwcap) 109 #define COMPAT_ELF_HWCAP2 (compat_elf_hwcap2) 110 extern unsigned int compat_elf_hwcap, compat_elf_hwcap2; 111 #endif 112 113 enum { 114 CAP_HWCAP = 1, 115 #ifdef CONFIG_COMPAT 116 CAP_COMPAT_HWCAP, 117 CAP_COMPAT_HWCAP2, 118 #endif 119 }; 120 121 #endif 122 #endif 123