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-rw-r--r--lib/raid6/loongarch.h38
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diff --git a/lib/raid6/loongarch.h b/lib/raid6/loongarch.h
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+/* 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 */