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) /* Obsolete */ 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 #define COMPAT_HWCAP_FPHP (1 << 22) 35 #define COMPAT_HWCAP_ASIMDHP (1 << 23) 36 #define COMPAT_HWCAP_ASIMDDP (1 << 24) 37 #define COMPAT_HWCAP_ASIMDFHM (1 << 25) 38 #define COMPAT_HWCAP_ASIMDBF16 (1 << 26) 39 #define COMPAT_HWCAP_I8MM (1 << 27) 40 41 #define COMPAT_HWCAP2_AES (1 << 0) 42 #define COMPAT_HWCAP2_PMULL (1 << 1) 43 #define COMPAT_HWCAP2_SHA1 (1 << 2) 44 #define COMPAT_HWCAP2_SHA2 (1 << 3) 45 #define COMPAT_HWCAP2_CRC32 (1 << 4) 46 #define COMPAT_HWCAP2_SB (1 << 5) 47 #define COMPAT_HWCAP2_SSBS (1 << 6) 48 49 #ifndef __ASSEMBLER__ 50 #include <linux/log2.h> 51 52 /* 53 * For userspace we represent hwcaps as a collection of HWCAP{,2}_x bitfields 54 * as described in uapi/asm/hwcap.h. For the kernel we represent hwcaps as 55 * natural numbers (in a single range of size MAX_CPU_FEATURES) defined here 56 * with prefix KERNEL_HWCAP_ mapped to their HWCAP{,2}_x counterpart. 57 * 58 * Hwcaps should be set and tested within the kernel via the 59 * cpu_{set,have}_named_feature(feature) where feature is the unique suffix 60 * of KERNEL_HWCAP_{feature}. 61 */ 62 #define __khwcap_feature(x) const_ilog2(HWCAP_ ## x) 63 #define __khwcap2_feature(x) (const_ilog2(HWCAP2_ ## x) + 64) 64 #define __khwcap3_feature(x) (const_ilog2(HWCAP3_ ## x) + 128) 65 66 #include "asm/kernel-hwcap.h" 67 68 /* 69 * This yields a mask that user programs can use to figure out what 70 * instruction set this cpu supports. 71 */ 72 #define ELF_HWCAP cpu_get_elf_hwcap() 73 #define ELF_HWCAP2 cpu_get_elf_hwcap2() 74 #define ELF_HWCAP3 cpu_get_elf_hwcap3() 75 76 #ifdef CONFIG_COMPAT 77 #define COMPAT_ELF_HWCAP (compat_elf_hwcap) 78 #define COMPAT_ELF_HWCAP2 (compat_elf_hwcap2) 79 #define COMPAT_ELF_HWCAP3 (compat_elf_hwcap3) 80 extern unsigned int compat_elf_hwcap, compat_elf_hwcap2, compat_elf_hwcap3; 81 #endif 82 83 enum { 84 CAP_HWCAP = 1, 85 #ifdef CONFIG_COMPAT 86 CAP_COMPAT_HWCAP, 87 CAP_COMPAT_HWCAP2, 88 #endif 89 }; 90 91 #endif 92 #endif 93