arch/loongarch/include/asm/xor.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (C) 2023 WANG Xuerui <git@xen0n.name>
   4  */
   5 #ifndef _ASM_LOONGARCH_XOR_H
   6 #define _ASM_LOONGARCH_XOR_H
   7
   8 #include <asm/cpu-features.h>
   9 #include <asm/xor_simd.h>
  10
  11 #ifdef CONFIG_CPU_HAS_LSX
  12 static struct xor_block_template xor_block_lsx = {
  13         .name = "lsx",
  14         .do_2 = xor_lsx_2,
  15         .do_3 = xor_lsx_3,
  16         .do_4 = xor_lsx_4,
  17         .do_5 = xor_lsx_5,
  18 };
  19
  20 #define XOR_SPEED_LSX()                                 \
  21         do {                                            \
  22                 if (cpu_has_lsx)                        \
  23                         xor_speed(&xor_block_lsx);      \
  24         } while (0)
  25 #else /* CONFIG_CPU_HAS_LSX */
  26 #define XOR_SPEED_LSX()
  27 #endif /* CONFIG_CPU_HAS_LSX */
  28
  29 #ifdef CONFIG_CPU_HAS_LASX
  30 static struct xor_block_template xor_block_lasx = {
  31         .name = "lasx",
  32         .do_2 = xor_lasx_2,
  33         .do_3 = xor_lasx_3,
  34         .do_4 = xor_lasx_4,
  35         .do_5 = xor_lasx_5,
  36 };
  37
  38 #define XOR_SPEED_LASX()                                        \
  39         do {                                                    \
  40                 if (cpu_has_lasx)                               \
  41                         xor_speed(&xor_block_lasx);             \
  42         } while (0)
  43 #else /* CONFIG_CPU_HAS_LASX */
  44 #define XOR_SPEED_LASX()
  45 #endif /* CONFIG_CPU_HAS_LASX */
  46
  47 /*
  48  * For grins, also test the generic routines.
  49  *
  50  * More importantly: it cannot be ruled out at this point of time, that some
  51  * future (maybe reduced) models could run the vector algorithms slower than
  52  * the scalar ones, maybe for errata or micro-op reasons. It may be
  53  * appropriate to revisit this after one or two more uarch generations.
  54  */
  55 #include <asm-generic/xor.h>
  56
  57 #undef XOR_TRY_TEMPLATES
  58 #define XOR_TRY_TEMPLATES                               \
  59 do {                                                    \
  60         xor_speed(&xor_block_8regs);                    \
  61         xor_speed(&xor_block_8regs_p);                  \
  62         xor_speed(&xor_block_32regs);                   \
  63         xor_speed(&xor_block_32regs_p);                 \
  64         XOR_SPEED_LSX();                                \
  65         XOR_SPEED_LASX();                               \
  66 } while (0)
  67
  68 #endif /* _ASM_LOONGARCH_XOR_H */