lib/raid6/loongarch.h

   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 */