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
16 extern struct xor_block_template const xor_block_inner_neon;
17
18 static void
19 xor_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
27 static void
28 xor_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
37 static void
38 xor_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
48 static void
49 xor_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
60 static 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 */
78
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.