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Linux kernel mirror (for testing)
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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 * __restrict p1,
20 const unsigned long * __restrict p2)
21{
22 kernel_neon_begin();
23 xor_block_inner_neon.do_2(bytes, p1, p2);
24 kernel_neon_end();
25}
26
27static void
28xor_neon_3(unsigned long bytes, unsigned long * __restrict p1,
29 const unsigned long * __restrict p2,
30 const unsigned long * __restrict p3)
31{
32 kernel_neon_begin();
33 xor_block_inner_neon.do_3(bytes, p1, p2, p3);
34 kernel_neon_end();
35}
36
37static void
38xor_neon_4(unsigned long bytes, unsigned long * __restrict p1,
39 const unsigned long * __restrict p2,
40 const unsigned long * __restrict p3,
41 const unsigned long * __restrict p4)
42{
43 kernel_neon_begin();
44 xor_block_inner_neon.do_4(bytes, p1, p2, p3, p4);
45 kernel_neon_end();
46}
47
48static void
49xor_neon_5(unsigned long bytes, unsigned long * __restrict p1,
50 const unsigned long * __restrict p2,
51 const unsigned long * __restrict p3,
52 const unsigned long * __restrict p4,
53 const unsigned long * __restrict p5)
54{
55 kernel_neon_begin();
56 xor_block_inner_neon.do_5(bytes, p1, p2, p3, p4, p5);
57 kernel_neon_end();
58}
59
60static struct xor_block_template xor_block_arm64 = {
61 .name = "arm64_neon",
62 .do_2 = xor_neon_2,
63 .do_3 = xor_neon_3,
64 .do_4 = xor_neon_4,
65 .do_5 = xor_neon_5
66};
67#undef XOR_TRY_TEMPLATES
68#define XOR_TRY_TEMPLATES \
69 do { \
70 xor_speed(&xor_block_8regs); \
71 xor_speed(&xor_block_32regs); \
72 if (cpu_has_neon()) { \
73 xor_speed(&xor_block_arm64);\
74 } \
75 } while (0)
76
77#endif /* ! CONFIG_KERNEL_MODE_NEON */