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