linux/lib/raid6/sse2.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* -*- linux-c -*- ------------------------------------------------------- *
 *
 *   Copyright 2002 H. Peter Anvin - All Rights Reserved
 *
 * ----------------------------------------------------------------------- */

/*
 * raid6/sse2.c
 *
 * SSE-2 implementation of RAID-6 syndrome functions
 *
 */

#include <linux/raid/pq.h>
#include "x86.h"

static const struct raid6_sse_constants { … } raid6_sse_constants  __attribute__((aligned(16))) = …;

static int raid6_have_sse2(void)
{ … }

/*
 * Plain SSE2 implementation
 */
static void raid6_sse21_gen_syndrome(int disks, size_t bytes, void **ptrs)
{ … }


static void raid6_sse21_xor_syndrome(int disks, int start, int stop,
				     size_t bytes, void **ptrs)
{ … }

const struct raid6_calls raid6_sse2x1 = …;

/*
 * Unrolled-by-2 SSE2 implementation
 */
static void raid6_sse22_gen_syndrome(int disks, size_t bytes, void **ptrs)
{ … }

static void raid6_sse22_xor_syndrome(int disks, int start, int stop,
				     size_t bytes, void **ptrs)
{ … }

const struct raid6_calls raid6_sse2x2 = …;

#ifdef CONFIG_X86_64

/*
 * Unrolled-by-4 SSE2 implementation
 */
static void raid6_sse24_gen_syndrome(int disks, size_t bytes, void **ptrs)
{ … }

static void raid6_sse24_xor_syndrome(int disks, int start, int stop,
				     size_t bytes, void **ptrs)
{ … }


const struct raid6_calls raid6_sse2x4 = …;

#endif /* CONFIG_X86_64 */