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Diffstat (limited to '')
| -rw-r--r-- | lib/raid6/loongarch.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/lib/raid6/loongarch.h b/lib/raid6/loongarch.h new file mode 100644 index 0000000000..acfc33ce70 --- /dev/null +++ b/lib/raid6/loongarch.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2023 WANG Xuerui <git@xen0n.name> + * + * raid6/loongarch.h + * + * Definitions common to LoongArch RAID-6 code only + */ + +#ifndef _LIB_RAID6_LOONGARCH_H +#define _LIB_RAID6_LOONGARCH_H + +#ifdef __KERNEL__ + +#include <asm/cpu-features.h> +#include <asm/fpu.h> + +#else /* for user-space testing */ + +#include <sys/auxv.h> + +/* have to supply these defines for glibc 2.37- and musl */ +#ifndef HWCAP_LOONGARCH_LSX +#define HWCAP_LOONGARCH_LSX (1 << 4) +#endif +#ifndef HWCAP_LOONGARCH_LASX +#define HWCAP_LOONGARCH_LASX (1 << 5) +#endif + +#define kernel_fpu_begin() +#define kernel_fpu_end() + +#define cpu_has_lsx (getauxval(AT_HWCAP) & HWCAP_LOONGARCH_LSX) +#define cpu_has_lasx (getauxval(AT_HWCAP) & HWCAP_LOONGARCH_LASX) + +#endif /* __KERNEL__ */ + +#endif /* _LIB_RAID6_LOONGARCH_H */ |