diff options
Diffstat (limited to 'arch/arm64/include/asm/hwcap.h')
| -rw-r--r-- | arch/arm64/include/asm/hwcap.h | 60 |
1 files changed, 58 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/hwcap.h b/arch/arm64/include/asm/hwcap.h index 400b80b49595..b4bfb6672168 100644 --- a/arch/arm64/include/asm/hwcap.h +++ b/arch/arm64/include/asm/hwcap.h @@ -17,6 +17,7 @@ #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) @@ -40,11 +41,67 @@ #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) + /* * This yields a mask that user programs can use to figure out what * instruction set this cpu supports. */ -#define ELF_HWCAP (elf_hwcap) +#define ELF_HWCAP cpu_get_elf_hwcap() +#define ELF_HWCAP2 cpu_get_elf_hwcap2() #ifdef CONFIG_COMPAT #define COMPAT_ELF_HWCAP (compat_elf_hwcap) @@ -60,6 +117,5 @@ enum { #endif }; -extern unsigned long elf_hwcap; #endif #endif |