1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright (C) 2023 WANG Xuerui <git@xen0n.name> 4 * 5 * raid6/loongarch.h 6 * 7 * Definitions common to LoongArch RAID-6 code only 8 */ 9 10 #ifndef _LIB_RAID6_LOONGARCH_H 11 #define _LIB_RAID6_LOONGARCH_H 12 13 #ifdef __KERNEL__ 14 15 #include <asm/cpu-features.h> 16 #include <asm/fpu.h> 17 18 #else /* for user-space testing */ 19 20 #include <sys/auxv.h> 21 22 /* have to supply these defines for glibc 2.37- and musl */ 23 #ifndef HWCAP_LOONGARCH_LSX 24 #define HWCAP_LOONGARCH_LSX (1 << 4) 25 #endif 26 #ifndef HWCAP_LOONGARCH_LASX 27 #define HWCAP_LOONGARCH_LASX (1 << 5) 28 #endif 29 30 #define kernel_fpu_begin() 31 #define kernel_fpu_end() 32 33 #define cpu_has_lsx (getauxval(AT_HWCAP) & HWCAP_LOONGARCH_LSX) 34 #define cpu_has_lasx (getauxval(AT_HWCAP) & HWCAP_LOONGARCH_LASX) 35 36 #endif /* __KERNEL__ */ 37 38 #endif /* _LIB_RAID6_LOONGARCH_H */ 39
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