| /* 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_HALF (1 << 1) |
| #define COMPAT_HWCAP_THUMB (1 << 2) |
| #define COMPAT_HWCAP_FAST_MULT (1 << 4) |
| #define COMPAT_HWCAP_VFP (1 << 6) |
| #define COMPAT_HWCAP_EDSP (1 << 7) |
| #define COMPAT_HWCAP_NEON (1 << 12) |
| #define COMPAT_HWCAP_VFPv3 (1 << 13) |
| #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_LPAE (1 << 20) |
| #define COMPAT_HWCAP_EVTSTRM (1 << 21) |
| |
| #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) |
| |
| #ifndef __ASSEMBLY__ |
| #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 KERNEL_HWCAP_FP __khwcap_feature(FP) |
| #define KERNEL_HWCAP_ASIMD __khwcap_feature(ASIMD) |
| #define KERNEL_HWCAP_EVTSTRM __khwcap_feature(EVTSTRM) |
| #define KERNEL_HWCAP_AES __khwcap_feature(AES) |
| #define KERNEL_HWCAP_PMULL __khwcap_feature(PMULL) |
| #define KERNEL_HWCAP_SHA1 __khwcap_feature(SHA1) |
| #define KERNEL_HWCAP_SHA2 __khwcap_feature(SHA2) |
| #define KERNEL_HWCAP_CRC32 __khwcap_feature(CRC32) |
| #define KERNEL_HWCAP_ATOMICS __khwcap_feature(ATOMICS) |
| #define KERNEL_HWCAP_FPHP __khwcap_feature(FPHP) |
| #define KERNEL_HWCAP_ASIMDHP __khwcap_feature(ASIMDHP) |
| #define KERNEL_HWCAP_CPUID __khwcap_feature(CPUID) |
| #define KERNEL_HWCAP_ASIMDRDM __khwcap_feature(ASIMDRDM) |
| #define KERNEL_HWCAP_JSCVT __khwcap_feature(JSCVT) |
| #define KERNEL_HWCAP_FCMA __khwcap_feature(FCMA) |
| #define KERNEL_HWCAP_LRCPC __khwcap_feature(LRCPC) |
| #define KERNEL_HWCAP_DCPOP __khwcap_feature(DCPOP) |
| #define KERNEL_HWCAP_SHA3 __khwcap_feature(SHA3) |
| #define KERNEL_HWCAP_SM3 __khwcap_feature(SM3) |
| #define KERNEL_HWCAP_SM4 __khwcap_feature(SM4) |
| #define KERNEL_HWCAP_ASIMDDP __khwcap_feature(ASIMDDP) |
| #define KERNEL_HWCAP_SHA512 __khwcap_feature(SHA512) |
| #define KERNEL_HWCAP_SVE __khwcap_feature(SVE) |
| #define KERNEL_HWCAP_ASIMDFHM __khwcap_feature(ASIMDFHM) |
| #define KERNEL_HWCAP_DIT __khwcap_feature(DIT) |
| #define KERNEL_HWCAP_USCAT __khwcap_feature(USCAT) |
| #define KERNEL_HWCAP_ILRCPC __khwcap_feature(ILRCPC) |
| #define KERNEL_HWCAP_FLAGM __khwcap_feature(FLAGM) |
| #define KERNEL_HWCAP_SSBS __khwcap_feature(SSBS) |
| #define KERNEL_HWCAP_SB __khwcap_feature(SB) |
| #define KERNEL_HWCAP_PACA __khwcap_feature(PACA) |
| #define KERNEL_HWCAP_PACG __khwcap_feature(PACG) |
| |
| #define __khwcap2_feature(x) (const_ilog2(HWCAP2_ ## x) + 32) |
| #define KERNEL_HWCAP_DCPODP __khwcap2_feature(DCPODP) |
| #define KERNEL_HWCAP_SVE2 __khwcap2_feature(SVE2) |
| #define KERNEL_HWCAP_SVEAES __khwcap2_feature(SVEAES) |
| #define KERNEL_HWCAP_SVEPMULL __khwcap2_feature(SVEPMULL) |
| #define KERNEL_HWCAP_SVEBITPERM __khwcap2_feature(SVEBITPERM) |
| #define KERNEL_HWCAP_SVESHA3 __khwcap2_feature(SVESHA3) |
| #define KERNEL_HWCAP_SVESM4 __khwcap2_feature(SVESM4) |
| #define KERNEL_HWCAP_FLAGM2 __khwcap2_feature(FLAGM2) |
| #define KERNEL_HWCAP_FRINT __khwcap2_feature(FRINT) |
| #define KERNEL_HWCAP_SVEI8MM __khwcap2_feature(SVEI8MM) |
| #define KERNEL_HWCAP_SVEF32MM __khwcap2_feature(SVEF32MM) |
| #define KERNEL_HWCAP_SVEF64MM __khwcap2_feature(SVEF64MM) |
| #define KERNEL_HWCAP_SVEBF16 __khwcap2_feature(SVEBF16) |
| #define KERNEL_HWCAP_I8MM __khwcap2_feature(I8MM) |
| #define KERNEL_HWCAP_BF16 __khwcap2_feature(BF16) |
| #define KERNEL_HWCAP_DGH __khwcap2_feature(DGH) |
| #define KERNEL_HWCAP_RNG __khwcap2_feature(RNG) |
| #define KERNEL_HWCAP_BTI __khwcap2_feature(BTI) |
| /* reserved for KERNEL_HWCAP_MTE __khwcap2_feature(MTE) */ |
| |
| /* |
| * 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() |
| |
| #ifdef CONFIG_COMPAT |
| #define COMPAT_ELF_HWCAP (compat_elf_hwcap) |
| #define COMPAT_ELF_HWCAP2 (compat_elf_hwcap2) |
| extern unsigned int compat_elf_hwcap, compat_elf_hwcap2; |
| #endif |
| |
| enum { |
| CAP_HWCAP = 1, |
| #ifdef CONFIG_COMPAT |
| CAP_COMPAT_HWCAP, |
| CAP_COMPAT_HWCAP2, |
| #endif |
| }; |
| |
| #endif |
| #endif |
