| /* SPDX-License-Identifier: GPL-2.0-only */ | |
| /* | |
| * Copyright (C) 2012 ARM Ltd. | |
| */ | |
| #ifndef __ASM_HWCAP_H | |
| #define __ASM_HWCAP_H | |
| #include <uapi/asm/hwcap.h> | |
| #include <asm/cpufeature.h> | |
| #define COMPAT_HWCAP_SWP (1 << 0) | |
| #define COMPAT_HWCAP_HALF (1 << 1) | |
| #define COMPAT_HWCAP_THUMB (1 << 2) | |
| #define COMPAT_HWCAP_26BIT (1 << 3) | |
| #define COMPAT_HWCAP_FAST_MULT (1 << 4) | |
| #define COMPAT_HWCAP_FPA (1 << 5) | |
| #define COMPAT_HWCAP_VFP (1 << 6) | |
| #define COMPAT_HWCAP_EDSP (1 << 7) | |
| #define COMPAT_HWCAP_JAVA (1 << 8) | |
| #define COMPAT_HWCAP_IWMMXT (1 << 9) | |
| #define COMPAT_HWCAP_CRUNCH (1 << 10) /* Obsolete */ | |
| #define COMPAT_HWCAP_THUMBEE (1 << 11) | |
| #define COMPAT_HWCAP_NEON (1 << 12) | |
| #define COMPAT_HWCAP_VFPv3 (1 << 13) | |
| #define COMPAT_HWCAP_VFPV3D16 (1 << 14) | |
| #define COMPAT_HWCAP_TLS (1 << 15) | |
| #define COMPAT_HWCAP_VFPv4 (1 << 16) | |
| #define COMPAT_HWCAP_IDIVA (1 << 17) | |
| #define COMPAT_HWCAP_IDIVT (1 << 18) | |
| #define COMPAT_HWCAP_IDIV (COMPAT_HWCAP_IDIVA|COMPAT_HWCAP_IDIVT) | |
| #define COMPAT_HWCAP_VFPD32 (1 << 19) | |
| #define COMPAT_HWCAP_LPAE (1 << 20) | |
| #define COMPAT_HWCAP_EVTSTRM (1 << 21) | |
| #define COMPAT_HWCAP_FPHP (1 << 22) | |
| #define COMPAT_HWCAP_ASIMDHP (1 << 23) | |
| #define COMPAT_HWCAP_ASIMDDP (1 << 24) | |
| #define COMPAT_HWCAP_ASIMDFHM (1 << 25) | |
| #define COMPAT_HWCAP_ASIMDBF16 (1 << 26) | |
| #define COMPAT_HWCAP_I8MM (1 << 27) | |
| #define COMPAT_HWCAP2_AES (1 << 0) | |
| #define COMPAT_HWCAP2_PMULL (1 << 1) | |
| #define COMPAT_HWCAP2_SHA1 (1 << 2) | |
| #define COMPAT_HWCAP2_SHA2 (1 << 3) | |
| #define COMPAT_HWCAP2_CRC32 (1 << 4) | |
| #define COMPAT_HWCAP2_SB (1 << 5) | |
| #define COMPAT_HWCAP2_SSBS (1 << 6) | |
| #ifndef __ASSEMBLER__ | |
| #include <linux/log2.h> | |
| /* | |
| * For userspace we represent hwcaps as a collection of HWCAP{,2}_x bitfields | |
| * as described in uapi/asm/hwcap.h. For the kernel we represent hwcaps as | |
| * natural numbers (in a single range of size MAX_CPU_FEATURES) defined here | |
| * with prefix KERNEL_HWCAP_ mapped to their HWCAP{,2}_x counterpart. | |
| * | |
| * Hwcaps should be set and tested within the kernel via the | |
| * cpu_{set,have}_named_feature(feature) where feature is the unique suffix | |
| * of KERNEL_HWCAP_{feature}. | |
| */ | |
| #define __khwcap_feature(x) const_ilog2(HWCAP_ ## x) | |
| #define __khwcap2_feature(x) (const_ilog2(HWCAP2_ ## x) + 64) | |
| #define __khwcap3_feature(x) (const_ilog2(HWCAP3_ ## x) + 128) | |
| #include "asm/kernel-hwcap.h" | |
| /* | |
| * This yields a mask that user programs can use to figure out what | |
| * instruction set this cpu supports. | |
| */ | |
| #define ELF_HWCAP cpu_get_elf_hwcap() | |
| #define ELF_HWCAP2 cpu_get_elf_hwcap2() | |
| #define ELF_HWCAP3 cpu_get_elf_hwcap3() | |
| #ifdef CONFIG_COMPAT | |
| #define COMPAT_ELF_HWCAP (compat_elf_hwcap) | |
| #define COMPAT_ELF_HWCAP2 (compat_elf_hwcap2) | |
| #define COMPAT_ELF_HWCAP3 (compat_elf_hwcap3) | |
| extern unsigned int compat_elf_hwcap, compat_elf_hwcap2, compat_elf_hwcap3; | |
| #endif | |
| enum { | |
| CAP_HWCAP = 1, | |
| #ifdef CONFIG_COMPAT | |
| CAP_COMPAT_HWCAP, | |
| CAP_COMPAT_HWCAP2, | |
| #endif | |
| }; | |
| #endif | |
| #endif |