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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * linux/arch/arm/lib/xor-neon.c
4 *
5 * Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org>
6 */
7
8#include <linux/raid/xor.h>
9#include <linux/module.h>
10
11MODULE_DESCRIPTION("NEON accelerated XOR implementation");
12MODULE_LICENSE("GPL");
13
14#ifndef __ARM_NEON__
15#error You should compile this file with '-march=armv7-a -mfloat-abi=softfp -mfpu=neon'
16#endif
17
18/*
19 * Pull in the reference implementations while instructing GCC (through
20 * -ftree-vectorize) to attempt to exploit implicit parallelism and emit
21 * NEON instructions. Clang does this by default at O2 so no pragma is
22 * needed.
23 */
24#ifdef CONFIG_CC_IS_GCC
25#pragma GCC optimize "tree-vectorize"
26#endif
27
28#pragma GCC diagnostic ignored "-Wunused-variable"
29#include <asm-generic/xor.h>
30
31struct xor_block_template const xor_block_neon_inner = {
32 .name = "__inner_neon__",
33 .do_2 = xor_8regs_2,
34 .do_3 = xor_8regs_3,
35 .do_4 = xor_8regs_4,
36 .do_5 = xor_8regs_5,
37};
38EXPORT_SYMBOL(xor_block_neon_inner);