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_SWP (1 << 0) 12#define COMPAT_HWCAP_HALF (1 << 1) 13#define COMPAT_HWCAP_THUMB (1 << 2) 14#define COMPAT_HWCAP_26BIT (1 << 3) 15#define COMPAT_HWCAP_FAST_MULT (1 << 4) 16#define COMPAT_HWCAP_FPA (1 << 5) 17#define COMPAT_HWCAP_VFP (1 << 6) 18#define COMPAT_HWCAP_EDSP (1 << 7) 19#define COMPAT_HWCAP_JAVA (1 << 8) 20#define COMPAT_HWCAP_IWMMXT (1 << 9) 21#define COMPAT_HWCAP_CRUNCH (1 << 10) 22#define COMPAT_HWCAP_THUMBEE (1 << 11) 23#define COMPAT_HWCAP_NEON (1 << 12) 24#define COMPAT_HWCAP_VFPv3 (1 << 13) 25#define COMPAT_HWCAP_VFPV3D16 (1 << 14) 26#define COMPAT_HWCAP_TLS (1 << 15) 27#define COMPAT_HWCAP_VFPv4 (1 << 16) 28#define COMPAT_HWCAP_IDIVA (1 << 17) 29#define COMPAT_HWCAP_IDIVT (1 << 18) 30#define COMPAT_HWCAP_IDIV (COMPAT_HWCAP_IDIVA|COMPAT_HWCAP_IDIVT) 31#define COMPAT_HWCAP_VFPD32 (1 << 19) 32#define COMPAT_HWCAP_LPAE (1 << 20) 33#define COMPAT_HWCAP_EVTSTRM (1 << 21) 34 35#define COMPAT_HWCAP2_AES (1 << 0) 36#define COMPAT_HWCAP2_PMULL (1 << 1) 37#define COMPAT_HWCAP2_SHA1 (1 << 2) 38#define COMPAT_HWCAP2_SHA2 (1 << 3) 39#define COMPAT_HWCAP2_CRC32 (1 << 4) 40 41#ifndef __ASSEMBLY__ 42#include <linux/log2.h> 43 44/* 45 * For userspace we represent hwcaps as a collection of HWCAP{,2}_x bitfields 46 * as described in uapi/asm/hwcap.h. For the kernel we represent hwcaps as 47 * natural numbers (in a single range of size MAX_CPU_FEATURES) defined here 48 * with prefix KERNEL_HWCAP_ mapped to their HWCAP{,2}_x counterpart. 49 * 50 * Hwcaps should be set and tested within the kernel via the 51 * cpu_{set,have}_named_feature(feature) where feature is the unique suffix 52 * of KERNEL_HWCAP_{feature}. 53 */ 54#define __khwcap_feature(x) const_ilog2(HWCAP_ ## x) 55#define KERNEL_HWCAP_FP __khwcap_feature(FP) 56#define KERNEL_HWCAP_ASIMD __khwcap_feature(ASIMD) 57#define KERNEL_HWCAP_EVTSTRM __khwcap_feature(EVTSTRM) 58#define KERNEL_HWCAP_AES __khwcap_feature(AES) 59#define KERNEL_HWCAP_PMULL __khwcap_feature(PMULL) 60#define KERNEL_HWCAP_SHA1 __khwcap_feature(SHA1) 61#define KERNEL_HWCAP_SHA2 __khwcap_feature(SHA2) 62#define KERNEL_HWCAP_CRC32 __khwcap_feature(CRC32) 63#define KERNEL_HWCAP_ATOMICS __khwcap_feature(ATOMICS) 64#define KERNEL_HWCAP_FPHP __khwcap_feature(FPHP) 65#define KERNEL_HWCAP_ASIMDHP __khwcap_feature(ASIMDHP) 66#define KERNEL_HWCAP_CPUID __khwcap_feature(CPUID) 67#define KERNEL_HWCAP_ASIMDRDM __khwcap_feature(ASIMDRDM) 68#define KERNEL_HWCAP_JSCVT __khwcap_feature(JSCVT) 69#define KERNEL_HWCAP_FCMA __khwcap_feature(FCMA) 70#define KERNEL_HWCAP_LRCPC __khwcap_feature(LRCPC) 71#define KERNEL_HWCAP_DCPOP __khwcap_feature(DCPOP) 72#define KERNEL_HWCAP_SHA3 __khwcap_feature(SHA3) 73#define KERNEL_HWCAP_SM3 __khwcap_feature(SM3) 74#define KERNEL_HWCAP_SM4 __khwcap_feature(SM4) 75#define KERNEL_HWCAP_ASIMDDP __khwcap_feature(ASIMDDP) 76#define KERNEL_HWCAP_SHA512 __khwcap_feature(SHA512) 77#define KERNEL_HWCAP_SVE __khwcap_feature(SVE) 78#define KERNEL_HWCAP_ASIMDFHM __khwcap_feature(ASIMDFHM) 79#define KERNEL_HWCAP_DIT __khwcap_feature(DIT) 80#define KERNEL_HWCAP_USCAT __khwcap_feature(USCAT) 81#define KERNEL_HWCAP_ILRCPC __khwcap_feature(ILRCPC) 82#define KERNEL_HWCAP_FLAGM __khwcap_feature(FLAGM) 83#define KERNEL_HWCAP_SSBS __khwcap_feature(SSBS) 84#define KERNEL_HWCAP_SB __khwcap_feature(SB) 85#define KERNEL_HWCAP_PACA __khwcap_feature(PACA) 86#define KERNEL_HWCAP_PACG __khwcap_feature(PACG) 87 88#define __khwcap2_feature(x) (const_ilog2(HWCAP2_ ## x) + 32) 89#define KERNEL_HWCAP_DCPODP __khwcap2_feature(DCPODP) 90#define KERNEL_HWCAP_SVE2 __khwcap2_feature(SVE2) 91#define KERNEL_HWCAP_SVEAES __khwcap2_feature(SVEAES) 92#define KERNEL_HWCAP_SVEPMULL __khwcap2_feature(SVEPMULL) 93#define KERNEL_HWCAP_SVEBITPERM __khwcap2_feature(SVEBITPERM) 94#define KERNEL_HWCAP_SVESHA3 __khwcap2_feature(SVESHA3) 95#define KERNEL_HWCAP_SVESM4 __khwcap2_feature(SVESM4) 96#define KERNEL_HWCAP_FLAGM2 __khwcap2_feature(FLAGM2) 97#define KERNEL_HWCAP_FRINT __khwcap2_feature(FRINT) 98#define KERNEL_HWCAP_SVEI8MM __khwcap2_feature(SVEI8MM) 99#define KERNEL_HWCAP_SVEF32MM __khwcap2_feature(SVEF32MM) 100#define KERNEL_HWCAP_SVEF64MM __khwcap2_feature(SVEF64MM) 101#define KERNEL_HWCAP_SVEBF16 __khwcap2_feature(SVEBF16) 102#define KERNEL_HWCAP_I8MM __khwcap2_feature(I8MM) 103#define KERNEL_HWCAP_BF16 __khwcap2_feature(BF16) 104#define KERNEL_HWCAP_DGH __khwcap2_feature(DGH) 105#define KERNEL_HWCAP_RNG __khwcap2_feature(RNG) 106#define KERNEL_HWCAP_BTI __khwcap2_feature(BTI) 107#define KERNEL_HWCAP_MTE __khwcap2_feature(MTE) 108 109/* 110 * This yields a mask that user programs can use to figure out what 111 * instruction set this cpu supports. 112 */ 113#define ELF_HWCAP cpu_get_elf_hwcap() 114#define ELF_HWCAP2 cpu_get_elf_hwcap2() 115 116#ifdef CONFIG_COMPAT 117#define COMPAT_ELF_HWCAP (compat_elf_hwcap) 118#define COMPAT_ELF_HWCAP2 (compat_elf_hwcap2) 119extern unsigned int compat_elf_hwcap, compat_elf_hwcap2; 120#endif 121 122enum { 123 CAP_HWCAP = 1, 124#ifdef CONFIG_COMPAT 125 CAP_COMPAT_HWCAP, 126 CAP_COMPAT_HWCAP2, 127#endif 128}; 129 130#endif 131#endif 132