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 11 MODULE_DESCRIPTION("NEON accelerated XOR implementation"); 12 MODULE_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 31 struct 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 }; 38 EXPORT_SYMBOL(xor_block_neon_inner); 39