1 /* 2 * Copyright (C) 2012 ARM Ltd. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 #ifndef __ASM_HWCAP_H 17 #define __ASM_HWCAP_H 18 19 #include <uapi/asm/hwcap.h> 20 #include <asm/cpufeature.h> 21 22 #define COMPAT_HWCAP_HALF (1 << 1) 23 #define COMPAT_HWCAP_THUMB (1 << 2) 24 #define COMPAT_HWCAP_FAST_MULT (1 << 4) 25 #define COMPAT_HWCAP_VFP (1 << 6) 26 #define COMPAT_HWCAP_EDSP (1 << 7) 27 #define COMPAT_HWCAP_NEON (1 << 12) 28 #define COMPAT_HWCAP_VFPv3 (1 << 13) 29 #define COMPAT_HWCAP_TLS (1 << 15) 30 #define COMPAT_HWCAP_VFPv4 (1 << 16) 31 #define COMPAT_HWCAP_IDIVA (1 << 17) 32 #define COMPAT_HWCAP_IDIVT (1 << 18) 33 #define COMPAT_HWCAP_IDIV (COMPAT_HWCAP_IDIVA|COMPAT_HWCAP_IDIVT) 34 #define COMPAT_HWCAP_LPAE (1 << 20) 35 #define COMPAT_HWCAP_EVTSTRM (1 << 21) 36 37 #define COMPAT_HWCAP2_AES (1 << 0) 38 #define COMPAT_HWCAP2_PMULL (1 << 1) 39 #define COMPAT_HWCAP2_SHA1 (1 << 2) 40 #define COMPAT_HWCAP2_SHA2 (1 << 3) 41 #define COMPAT_HWCAP2_CRC32 (1 << 4) 42 43 #ifndef __ASSEMBLY__ 44 #include <linux/log2.h> 45 46 /* 47 * For userspace we represent hwcaps as a collection of HWCAP{,2}_x bitfields 48 * as described in uapi/asm/hwcap.h. For the kernel we represent hwcaps as 49 * natural numbers (in a single range of size MAX_CPU_FEATURES) defined here 50 * with prefix KERNEL_HWCAP_ mapped to their HWCAP{,2}_x counterpart. 51 * 52 * Hwcaps should be set and tested within the kernel via the 53 * cpu_{set,have}_named_feature(feature) where feature is the unique suffix 54 * of KERNEL_HWCAP_{feature}. 55 */ 56 #define __khwcap_feature(x) const_ilog2(HWCAP_ ## x) 57 #define KERNEL_HWCAP_FP __khwcap_feature(FP) 58 #define KERNEL_HWCAP_ASIMD __khwcap_feature(ASIMD) 59 #define KERNEL_HWCAP_EVTSTRM __khwcap_feature(EVTSTRM) 60 #define KERNEL_HWCAP_AES __khwcap_feature(AES) 61 #define KERNEL_HWCAP_PMULL __khwcap_feature(PMULL) 62 #define KERNEL_HWCAP_SHA1 __khwcap_feature(SHA1) 63 #define KERNEL_HWCAP_SHA2 __khwcap_feature(SHA2) 64 #define KERNEL_HWCAP_CRC32 __khwcap_feature(CRC32) 65 #define KERNEL_HWCAP_ATOMICS __khwcap_feature(ATOMICS) 66 #define KERNEL_HWCAP_FPHP __khwcap_feature(FPHP) 67 #define KERNEL_HWCAP_ASIMDHP __khwcap_feature(ASIMDHP) 68 #define KERNEL_HWCAP_CPUID __khwcap_feature(CPUID) 69 #define KERNEL_HWCAP_ASIMDRDM __khwcap_feature(ASIMDRDM) 70 #define KERNEL_HWCAP_JSCVT __khwcap_feature(JSCVT) 71 #define KERNEL_HWCAP_FCMA __khwcap_feature(FCMA) 72 #define KERNEL_HWCAP_LRCPC __khwcap_feature(LRCPC) 73 #define KERNEL_HWCAP_DCPOP __khwcap_feature(DCPOP) 74 #define KERNEL_HWCAP_SHA3 __khwcap_feature(SHA3) 75 #define KERNEL_HWCAP_SM3 __khwcap_feature(SM3) 76 #define KERNEL_HWCAP_SM4 __khwcap_feature(SM4) 77 #define KERNEL_HWCAP_ASIMDDP __khwcap_feature(ASIMDDP) 78 #define KERNEL_HWCAP_SHA512 __khwcap_feature(SHA512) 79 #define KERNEL_HWCAP_SVE __khwcap_feature(SVE) 80 #define KERNEL_HWCAP_ASIMDFHM __khwcap_feature(ASIMDFHM) 81 #define KERNEL_HWCAP_DIT __khwcap_feature(DIT) 82 #define KERNEL_HWCAP_USCAT __khwcap_feature(USCAT) 83 #define KERNEL_HWCAP_ILRCPC __khwcap_feature(ILRCPC) 84 #define KERNEL_HWCAP_FLAGM __khwcap_feature(FLAGM) 85 #define KERNEL_HWCAP_SSBS __khwcap_feature(SSBS) 86 #define KERNEL_HWCAP_SB __khwcap_feature(SB) 87 #define KERNEL_HWCAP_PACA __khwcap_feature(PACA) 88 #define KERNEL_HWCAP_PACG __khwcap_feature(PACG) 89 90 #define __khwcap2_feature(x) (const_ilog2(HWCAP2_ ## x) + 32) 91 #define KERNEL_HWCAP_DCPODP __khwcap2_feature(DCPODP) 92 #define KERNEL_HWCAP_SVE2 __khwcap2_feature(SVE2) 93 #define KERNEL_HWCAP_SVEAES __khwcap2_feature(SVEAES) 94 #define KERNEL_HWCAP_SVEPMULL __khwcap2_feature(SVEPMULL) 95 #define KERNEL_HWCAP_SVEBITPERM __khwcap2_feature(SVEBITPERM) 96 #define KERNEL_HWCAP_SVESHA3 __khwcap2_feature(SVESHA3) 97 #define KERNEL_HWCAP_SVESM4 __khwcap2_feature(SVESM4) 98 99 /* 100 * This yields a mask that user programs can use to figure out what 101 * instruction set this cpu supports. 102 */ 103 #define ELF_HWCAP cpu_get_elf_hwcap() 104 #define ELF_HWCAP2 cpu_get_elf_hwcap2() 105 106 #ifdef CONFIG_COMPAT 107 #define COMPAT_ELF_HWCAP (compat_elf_hwcap) 108 #define COMPAT_ELF_HWCAP2 (compat_elf_hwcap2) 109 extern unsigned int compat_elf_hwcap, compat_elf_hwcap2; 110 #endif 111 112 enum { 113 CAP_HWCAP = 1, 114 #ifdef CONFIG_COMPAT 115 CAP_COMPAT_HWCAP, 116 CAP_COMPAT_HWCAP2, 117 #endif 118 }; 119 120 #endif 121 #endif 122