LXR linux/arch/arm64/include/asm/xor.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * arch/arm64/include/asm/xor.h
   4 *
   5 * Authors: Jackie Liu <liuyun01@kylinos.cn>
   6 * Copyright (C) 2018,Tianjin KYLIN Information Technology Co., Ltd.
   7 */
   8
   9#include <linux/hardirq.h>
  10#include <asm-generic/xor.h>
  11#include <asm/hwcap.h>
  12#include <asm/neon.h>
  13
  14#ifdef CONFIG_KERNEL_MODE_NEON
  15
  16extern struct xor_block_template const xor_block_inner_neon;
  17
  18static void
  19xor_neon_2(unsigned long bytes, unsigned long *p1, unsigned long *p2)
  20{
  21        kernel_neon_begin();
  22        xor_block_inner_neon.do_2(bytes, p1, p2);
  23        kernel_neon_end();
  24}
  25
  26static void
  27xor_neon_3(unsigned long bytes, unsigned long *p1, unsigned long *p2,
  28                unsigned long *p3)
  29{
  30        kernel_neon_begin();
  31        xor_block_inner_neon.do_3(bytes, p1, p2, p3);
  32        kernel_neon_end();
  33}
  34
  35static void
  36xor_neon_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,
  37                unsigned long *p3, unsigned long *p4)
  38{
  39        kernel_neon_begin();
  40        xor_block_inner_neon.do_4(bytes, p1, p2, p3, p4);
  41        kernel_neon_end();
  42}
  43
  44static void
  45xor_neon_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
  46                unsigned long *p3, unsigned long *p4, unsigned long *p5)
  47{
  48        kernel_neon_begin();
  49        xor_block_inner_neon.do_5(bytes, p1, p2, p3, p4, p5);
  50        kernel_neon_end();
  51}
  52
  53static struct xor_block_template xor_block_arm64 = {
  54        .name   = "arm64_neon",
  55        .do_2   = xor_neon_2,
  56        .do_3   = xor_neon_3,
  57        .do_4   = xor_neon_4,
  58        .do_5   = xor_neon_5
  59};
  60#undef XOR_TRY_TEMPLATES
  61#define XOR_TRY_TEMPLATES           \
  62        do {        \
  63                xor_speed(&xor_block_8regs);    \
  64                xor_speed(&xor_block_32regs);    \
  65                if (cpu_has_neon()) { \
  66                        xor_speed(&xor_block_arm64);\
  67                } \
  68        } while (0)
  69
  70#endif /* ! CONFIG_KERNEL_MODE_NEON */
  71