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linux-stable/lib/raid6/avx512.c
Thomas Gleixner dd165a658d treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 48 
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation inc 53 temple place ste 330 boston ma
  02111 1307 usa either version 2 of the license or at your option any
  later version incorporated herein by reference

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 13 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520170858.645641371@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:27:13 +02:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/* -*- linux-c -*- --------------------------------------------------------
*
* Copyright (C) 2016 Intel Corporation
*
* Author: Gayatri Kammela <gayatri.kammela@intel.com>
* Author: Megha Dey <megha.dey@linux.intel.com>
*
* Based on avx2.c: Copyright 2012 Yuanhan Liu All Rights Reserved
* Based on sse2.c: Copyright 2002 H. Peter Anvin - All Rights Reserved
*
* -----------------------------------------------------------------------
*/
/*
* AVX512 implementation of RAID-6 syndrome functions
*
*/
#ifdef CONFIG_AS_AVX512
#include <linux/raid/pq.h>
#include "x86.h"
static const struct raid6_avx512_constants {
u64 x1d[8];
} raid6_avx512_constants __aligned(512/8) = {
{ 0x1d1d1d1d1d1d1d1dULL, 0x1d1d1d1d1d1d1d1dULL,
0x1d1d1d1d1d1d1d1dULL, 0x1d1d1d1d1d1d1d1dULL,
0x1d1d1d1d1d1d1d1dULL, 0x1d1d1d1d1d1d1d1dULL,
0x1d1d1d1d1d1d1d1dULL, 0x1d1d1d1d1d1d1d1dULL,},
};
static int raid6_have_avx512(void)
{
return boot_cpu_has(X86_FEATURE_AVX2) &&
boot_cpu_has(X86_FEATURE_AVX) &&
boot_cpu_has(X86_FEATURE_AVX512F) &&
boot_cpu_has(X86_FEATURE_AVX512BW) &&
boot_cpu_has(X86_FEATURE_AVX512VL) &&
boot_cpu_has(X86_FEATURE_AVX512DQ);
}
static void raid6_avx5121_gen_syndrome(int disks, size_t bytes, void **ptrs)
{
u8 **dptr = (u8 **)ptrs;
u8 *p, *q;
int d, z, z0;
z0 = disks - 3; /* Highest data disk */
p = dptr[z0+1]; /* XOR parity */
q = dptr[z0+2]; /* RS syndrome */
kernel_fpu_begin();
asm volatile("vmovdqa64 %0,%%zmm0\n\t"
"vpxorq %%zmm1,%%zmm1,%%zmm1" /* Zero temp */
:
: "m" (raid6_avx512_constants.x1d[0]));
for (d = 0; d < bytes; d += 64) {
asm volatile("prefetchnta %0\n\t"
"vmovdqa64 %0,%%zmm2\n\t" /* P[0] */
"prefetchnta %1\n\t"
"vmovdqa64 %%zmm2,%%zmm4\n\t" /* Q[0] */
"vmovdqa64 %1,%%zmm6"
:
: "m" (dptr[z0][d]), "m" (dptr[z0-1][d]));
for (z = z0-2; z >= 0; z--) {
asm volatile("prefetchnta %0\n\t"
"vpcmpgtb %%zmm4,%%zmm1,%%k1\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm6,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm6,%%zmm4,%%zmm4\n\t"
"vmovdqa64 %0,%%zmm6"
:
: "m" (dptr[z][d]));
}
asm volatile("vpcmpgtb %%zmm4,%%zmm1,%%k1\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm6,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm6,%%zmm4,%%zmm4\n\t"
"vmovntdq %%zmm2,%0\n\t"
"vpxorq %%zmm2,%%zmm2,%%zmm2\n\t"
"vmovntdq %%zmm4,%1\n\t"
"vpxorq %%zmm4,%%zmm4,%%zmm4"
:
: "m" (p[d]), "m" (q[d]));
}
asm volatile("sfence" : : : "memory");
kernel_fpu_end();
}
static void raid6_avx5121_xor_syndrome(int disks, int start, int stop,
size_t bytes, void **ptrs)
{
u8 **dptr = (u8 **)ptrs;
u8 *p, *q;
int d, z, z0;
z0 = stop; /* P/Q right side optimization */
p = dptr[disks-2]; /* XOR parity */
q = dptr[disks-1]; /* RS syndrome */
kernel_fpu_begin();
asm volatile("vmovdqa64 %0,%%zmm0"
: : "m" (raid6_avx512_constants.x1d[0]));
for (d = 0 ; d < bytes ; d += 64) {
asm volatile("vmovdqa64 %0,%%zmm4\n\t"
"vmovdqa64 %1,%%zmm2\n\t"
"vpxorq %%zmm4,%%zmm2,%%zmm2"
:
: "m" (dptr[z0][d]), "m" (p[d]));
/* P/Q data pages */
for (z = z0-1 ; z >= start ; z--) {
asm volatile("vpxorq %%zmm5,%%zmm5,%%zmm5\n\t"
"vpcmpgtb %%zmm4,%%zmm5,%%k1\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vmovdqa64 %0,%%zmm5\n\t"
"vpxorq %%zmm5,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4"
:
: "m" (dptr[z][d]));
}
/* P/Q left side optimization */
for (z = start-1 ; z >= 0 ; z--) {
asm volatile("vpxorq %%zmm5,%%zmm5,%%zmm5\n\t"
"vpcmpgtb %%zmm4,%%zmm5,%%k1\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4"
:
: );
}
asm volatile("vpxorq %0,%%zmm4,%%zmm4\n\t"
/* Don't use movntdq for r/w memory area < cache line */
"vmovdqa64 %%zmm4,%0\n\t"
"vmovdqa64 %%zmm2,%1"
:
: "m" (q[d]), "m" (p[d]));
}
asm volatile("sfence" : : : "memory");
kernel_fpu_end();
}
const struct raid6_calls raid6_avx512x1 = {
raid6_avx5121_gen_syndrome,
raid6_avx5121_xor_syndrome,
raid6_have_avx512,
"avx512x1",
1 /* Has cache hints */
};
/*
* Unrolled-by-2 AVX512 implementation
*/
static void raid6_avx5122_gen_syndrome(int disks, size_t bytes, void **ptrs)
{
u8 **dptr = (u8 **)ptrs;
u8 *p, *q;
int d, z, z0;
z0 = disks - 3; /* Highest data disk */
p = dptr[z0+1]; /* XOR parity */
q = dptr[z0+2]; /* RS syndrome */
kernel_fpu_begin();
asm volatile("vmovdqa64 %0,%%zmm0\n\t"
"vpxorq %%zmm1,%%zmm1,%%zmm1" /* Zero temp */
:
: "m" (raid6_avx512_constants.x1d[0]));
/* We uniformly assume a single prefetch covers at least 64 bytes */
for (d = 0; d < bytes; d += 128) {
asm volatile("prefetchnta %0\n\t"
"prefetchnta %1\n\t"
"vmovdqa64 %0,%%zmm2\n\t" /* P[0] */
"vmovdqa64 %1,%%zmm3\n\t" /* P[1] */
"vmovdqa64 %%zmm2,%%zmm4\n\t" /* Q[0] */
"vmovdqa64 %%zmm3,%%zmm6" /* Q[1] */
:
: "m" (dptr[z0][d]), "m" (dptr[z0][d+64]));
for (z = z0-1; z >= 0; z--) {
asm volatile("prefetchnta %0\n\t"
"prefetchnta %1\n\t"
"vpcmpgtb %%zmm4,%%zmm1,%%k1\n\t"
"vpcmpgtb %%zmm6,%%zmm1,%%k2\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpmovm2b %%k2,%%zmm7\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpaddb %%zmm6,%%zmm6,%%zmm6\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpandq %%zmm0,%%zmm7,%%zmm7\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6\n\t"
"vmovdqa64 %0,%%zmm5\n\t"
"vmovdqa64 %1,%%zmm7\n\t"
"vpxorq %%zmm5,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm7,%%zmm3,%%zmm3\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6"
:
: "m" (dptr[z][d]), "m" (dptr[z][d+64]));
}
asm volatile("vmovntdq %%zmm2,%0\n\t"
"vmovntdq %%zmm3,%1\n\t"
"vmovntdq %%zmm4,%2\n\t"
"vmovntdq %%zmm6,%3"
:
: "m" (p[d]), "m" (p[d+64]), "m" (q[d]),
"m" (q[d+64]));
}
asm volatile("sfence" : : : "memory");
kernel_fpu_end();
}
static void raid6_avx5122_xor_syndrome(int disks, int start, int stop,
size_t bytes, void **ptrs)
{
u8 **dptr = (u8 **)ptrs;
u8 *p, *q;
int d, z, z0;
z0 = stop; /* P/Q right side optimization */
p = dptr[disks-2]; /* XOR parity */
q = dptr[disks-1]; /* RS syndrome */
kernel_fpu_begin();
asm volatile("vmovdqa64 %0,%%zmm0"
: : "m" (raid6_avx512_constants.x1d[0]));
for (d = 0 ; d < bytes ; d += 128) {
asm volatile("vmovdqa64 %0,%%zmm4\n\t"
"vmovdqa64 %1,%%zmm6\n\t"
"vmovdqa64 %2,%%zmm2\n\t"
"vmovdqa64 %3,%%zmm3\n\t"
"vpxorq %%zmm4,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm6,%%zmm3,%%zmm3"
:
: "m" (dptr[z0][d]), "m" (dptr[z0][d+64]),
"m" (p[d]), "m" (p[d+64]));
/* P/Q data pages */
for (z = z0-1 ; z >= start ; z--) {
asm volatile("vpxorq %%zmm5,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm7,%%zmm7,%%zmm7\n\t"
"vpcmpgtb %%zmm4,%%zmm5,%%k1\n\t"
"vpcmpgtb %%zmm6,%%zmm7,%%k2\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpmovm2b %%k2,%%zmm7\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpaddb %%zmm6,%%zmm6,%%zmm6\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpandq %%zmm0,%%zmm7,%%zmm7\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6\n\t"
"vmovdqa64 %0,%%zmm5\n\t"
"vmovdqa64 %1,%%zmm7\n\t"
"vpxorq %%zmm5,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm7,%%zmm3,%%zmm3\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6"
:
: "m" (dptr[z][d]), "m" (dptr[z][d+64]));
}
/* P/Q left side optimization */
for (z = start-1 ; z >= 0 ; z--) {
asm volatile("vpxorq %%zmm5,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm7,%%zmm7,%%zmm7\n\t"
"vpcmpgtb %%zmm4,%%zmm5,%%k1\n\t"
"vpcmpgtb %%zmm6,%%zmm7,%%k2\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpmovm2b %%k2,%%zmm7\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpaddb %%zmm6,%%zmm6,%%zmm6\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpandq %%zmm0,%%zmm7,%%zmm7\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6"
:
: );
}
asm volatile("vpxorq %0,%%zmm4,%%zmm4\n\t"
"vpxorq %1,%%zmm6,%%zmm6\n\t"
/* Don't use movntdq for r/w
* memory area < cache line
*/
"vmovdqa64 %%zmm4,%0\n\t"
"vmovdqa64 %%zmm6,%1\n\t"
"vmovdqa64 %%zmm2,%2\n\t"
"vmovdqa64 %%zmm3,%3"
:
: "m" (q[d]), "m" (q[d+64]), "m" (p[d]),
"m" (p[d+64]));
}
asm volatile("sfence" : : : "memory");
kernel_fpu_end();
}
const struct raid6_calls raid6_avx512x2 = {
raid6_avx5122_gen_syndrome,
raid6_avx5122_xor_syndrome,
raid6_have_avx512,
"avx512x2",
1 /* Has cache hints */
};
#ifdef CONFIG_X86_64
/*
* Unrolled-by-4 AVX2 implementation
*/
static void raid6_avx5124_gen_syndrome(int disks, size_t bytes, void **ptrs)
{
u8 **dptr = (u8 **)ptrs;
u8 *p, *q;
int d, z, z0;
z0 = disks - 3; /* Highest data disk */
p = dptr[z0+1]; /* XOR parity */
q = dptr[z0+2]; /* RS syndrome */
kernel_fpu_begin();
asm volatile("vmovdqa64 %0,%%zmm0\n\t"
"vpxorq %%zmm1,%%zmm1,%%zmm1\n\t" /* Zero temp */
"vpxorq %%zmm2,%%zmm2,%%zmm2\n\t" /* P[0] */
"vpxorq %%zmm3,%%zmm3,%%zmm3\n\t" /* P[1] */
"vpxorq %%zmm4,%%zmm4,%%zmm4\n\t" /* Q[0] */
"vpxorq %%zmm6,%%zmm6,%%zmm6\n\t" /* Q[1] */
"vpxorq %%zmm10,%%zmm10,%%zmm10\n\t" /* P[2] */
"vpxorq %%zmm11,%%zmm11,%%zmm11\n\t" /* P[3] */
"vpxorq %%zmm12,%%zmm12,%%zmm12\n\t" /* Q[2] */
"vpxorq %%zmm14,%%zmm14,%%zmm14" /* Q[3] */
:
: "m" (raid6_avx512_constants.x1d[0]));
for (d = 0; d < bytes; d += 256) {
for (z = z0; z >= 0; z--) {
asm volatile("prefetchnta %0\n\t"
"prefetchnta %1\n\t"
"prefetchnta %2\n\t"
"prefetchnta %3\n\t"
"vpcmpgtb %%zmm4,%%zmm1,%%k1\n\t"
"vpcmpgtb %%zmm6,%%zmm1,%%k2\n\t"
"vpcmpgtb %%zmm12,%%zmm1,%%k3\n\t"
"vpcmpgtb %%zmm14,%%zmm1,%%k4\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpmovm2b %%k2,%%zmm7\n\t"
"vpmovm2b %%k3,%%zmm13\n\t"
"vpmovm2b %%k4,%%zmm15\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpaddb %%zmm6,%%zmm6,%%zmm6\n\t"
"vpaddb %%zmm12,%%zmm12,%%zmm12\n\t"
"vpaddb %%zmm14,%%zmm14,%%zmm14\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpandq %%zmm0,%%zmm7,%%zmm7\n\t"
"vpandq %%zmm0,%%zmm13,%%zmm13\n\t"
"vpandq %%zmm0,%%zmm15,%%zmm15\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6\n\t"
"vpxorq %%zmm13,%%zmm12,%%zmm12\n\t"
"vpxorq %%zmm15,%%zmm14,%%zmm14\n\t"
"vmovdqa64 %0,%%zmm5\n\t"
"vmovdqa64 %1,%%zmm7\n\t"
"vmovdqa64 %2,%%zmm13\n\t"
"vmovdqa64 %3,%%zmm15\n\t"
"vpxorq %%zmm5,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm7,%%zmm3,%%zmm3\n\t"
"vpxorq %%zmm13,%%zmm10,%%zmm10\n\t"
"vpxorq %%zmm15,%%zmm11,%%zmm11\n"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6\n\t"
"vpxorq %%zmm13,%%zmm12,%%zmm12\n\t"
"vpxorq %%zmm15,%%zmm14,%%zmm14"
:
: "m" (dptr[z][d]), "m" (dptr[z][d+64]),
"m" (dptr[z][d+128]), "m" (dptr[z][d+192]));
}
asm volatile("vmovntdq %%zmm2,%0\n\t"
"vpxorq %%zmm2,%%zmm2,%%zmm2\n\t"
"vmovntdq %%zmm3,%1\n\t"
"vpxorq %%zmm3,%%zmm3,%%zmm3\n\t"
"vmovntdq %%zmm10,%2\n\t"
"vpxorq %%zmm10,%%zmm10,%%zmm10\n\t"
"vmovntdq %%zmm11,%3\n\t"
"vpxorq %%zmm11,%%zmm11,%%zmm11\n\t"
"vmovntdq %%zmm4,%4\n\t"
"vpxorq %%zmm4,%%zmm4,%%zmm4\n\t"
"vmovntdq %%zmm6,%5\n\t"
"vpxorq %%zmm6,%%zmm6,%%zmm6\n\t"
"vmovntdq %%zmm12,%6\n\t"
"vpxorq %%zmm12,%%zmm12,%%zmm12\n\t"
"vmovntdq %%zmm14,%7\n\t"
"vpxorq %%zmm14,%%zmm14,%%zmm14"
:
: "m" (p[d]), "m" (p[d+64]), "m" (p[d+128]),
"m" (p[d+192]), "m" (q[d]), "m" (q[d+64]),
"m" (q[d+128]), "m" (q[d+192]));
}
asm volatile("sfence" : : : "memory");
kernel_fpu_end();
}
static void raid6_avx5124_xor_syndrome(int disks, int start, int stop,
size_t bytes, void **ptrs)
{
u8 **dptr = (u8 **)ptrs;
u8 *p, *q;
int d, z, z0;
z0 = stop; /* P/Q right side optimization */
p = dptr[disks-2]; /* XOR parity */
q = dptr[disks-1]; /* RS syndrome */
kernel_fpu_begin();
asm volatile("vmovdqa64 %0,%%zmm0"
:: "m" (raid6_avx512_constants.x1d[0]));
for (d = 0 ; d < bytes ; d += 256) {
asm volatile("vmovdqa64 %0,%%zmm4\n\t"
"vmovdqa64 %1,%%zmm6\n\t"
"vmovdqa64 %2,%%zmm12\n\t"
"vmovdqa64 %3,%%zmm14\n\t"
"vmovdqa64 %4,%%zmm2\n\t"
"vmovdqa64 %5,%%zmm3\n\t"
"vmovdqa64 %6,%%zmm10\n\t"
"vmovdqa64 %7,%%zmm11\n\t"
"vpxorq %%zmm4,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm6,%%zmm3,%%zmm3\n\t"
"vpxorq %%zmm12,%%zmm10,%%zmm10\n\t"
"vpxorq %%zmm14,%%zmm11,%%zmm11"
:
: "m" (dptr[z0][d]), "m" (dptr[z0][d+64]),
"m" (dptr[z0][d+128]), "m" (dptr[z0][d+192]),
"m" (p[d]), "m" (p[d+64]), "m" (p[d+128]),
"m" (p[d+192]));
/* P/Q data pages */
for (z = z0-1 ; z >= start ; z--) {
asm volatile("vpxorq %%zmm5,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm7,%%zmm7,%%zmm7\n\t"
"vpxorq %%zmm13,%%zmm13,%%zmm13\n\t"
"vpxorq %%zmm15,%%zmm15,%%zmm15\n\t"
"prefetchnta %0\n\t"
"prefetchnta %2\n\t"
"vpcmpgtb %%zmm4,%%zmm5,%%k1\n\t"
"vpcmpgtb %%zmm6,%%zmm7,%%k2\n\t"
"vpcmpgtb %%zmm12,%%zmm13,%%k3\n\t"
"vpcmpgtb %%zmm14,%%zmm15,%%k4\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpmovm2b %%k2,%%zmm7\n\t"
"vpmovm2b %%k3,%%zmm13\n\t"
"vpmovm2b %%k4,%%zmm15\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpaddb %%zmm6,%%zmm6,%%zmm6\n\t"
"vpaddb %%zmm12,%%zmm12,%%zmm12\n\t"
"vpaddb %%Zmm14,%%zmm14,%%zmm14\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpandq %%zmm0,%%zmm7,%%zmm7\n\t"
"vpandq %%zmm0,%%zmm13,%%zmm13\n\t"
"vpandq %%zmm0,%%zmm15,%%zmm15\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6\n\t"
"vpxorq %%zmm13,%%zmm12,%%zmm12\n\t"
"vpxorq %%zmm15,%%zmm14,%%zmm14\n\t"
"vmovdqa64 %0,%%zmm5\n\t"
"vmovdqa64 %1,%%zmm7\n\t"
"vmovdqa64 %2,%%zmm13\n\t"
"vmovdqa64 %3,%%zmm15\n\t"
"vpxorq %%zmm5,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm7,%%zmm3,%%zmm3\n\t"
"vpxorq %%zmm13,%%zmm10,%%zmm10\n\t"
"vpxorq %%zmm15,%%zmm11,%%zmm11\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6\n\t"
"vpxorq %%zmm13,%%zmm12,%%zmm12\n\t"
"vpxorq %%zmm15,%%zmm14,%%zmm14"
:
: "m" (dptr[z][d]), "m" (dptr[z][d+64]),
"m" (dptr[z][d+128]),
"m" (dptr[z][d+192]));
}
asm volatile("prefetchnta %0\n\t"
"prefetchnta %1\n\t"
:
: "m" (q[d]), "m" (q[d+128]));
/* P/Q left side optimization */
for (z = start-1 ; z >= 0 ; z--) {
asm volatile("vpxorq %%zmm5,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm7,%%zmm7,%%zmm7\n\t"
"vpxorq %%zmm13,%%zmm13,%%zmm13\n\t"
"vpxorq %%zmm15,%%zmm15,%%zmm15\n\t"
"vpcmpgtb %%zmm4,%%zmm5,%%k1\n\t"
"vpcmpgtb %%zmm6,%%zmm7,%%k2\n\t"
"vpcmpgtb %%zmm12,%%zmm13,%%k3\n\t"
"vpcmpgtb %%zmm14,%%zmm15,%%k4\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpmovm2b %%k2,%%zmm7\n\t"
"vpmovm2b %%k3,%%zmm13\n\t"
"vpmovm2b %%k4,%%zmm15\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpaddb %%zmm6,%%zmm6,%%zmm6\n\t"
"vpaddb %%zmm12,%%zmm12,%%zmm12\n\t"
"vpaddb %%zmm14,%%zmm14,%%zmm14\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpandq %%zmm0,%%zmm7,%%zmm7\n\t"
"vpandq %%zmm0,%%zmm13,%%zmm13\n\t"
"vpandq %%zmm0,%%zmm15,%%zmm15\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6\n\t"
"vpxorq %%zmm13,%%zmm12,%%zmm12\n\t"
"vpxorq %%zmm15,%%zmm14,%%zmm14"
:
: );
}
asm volatile("vmovntdq %%zmm2,%0\n\t"
"vmovntdq %%zmm3,%1\n\t"
"vmovntdq %%zmm10,%2\n\t"
"vmovntdq %%zmm11,%3\n\t"
"vpxorq %4,%%zmm4,%%zmm4\n\t"
"vpxorq %5,%%zmm6,%%zmm6\n\t"
"vpxorq %6,%%zmm12,%%zmm12\n\t"
"vpxorq %7,%%zmm14,%%zmm14\n\t"
"vmovntdq %%zmm4,%4\n\t"
"vmovntdq %%zmm6,%5\n\t"
"vmovntdq %%zmm12,%6\n\t"
"vmovntdq %%zmm14,%7"
:
: "m" (p[d]), "m" (p[d+64]), "m" (p[d+128]),
"m" (p[d+192]), "m" (q[d]), "m" (q[d+64]),
"m" (q[d+128]), "m" (q[d+192]));
}
asm volatile("sfence" : : : "memory");
kernel_fpu_end();
}
const struct raid6_calls raid6_avx512x4 = {
raid6_avx5124_gen_syndrome,
raid6_avx5124_xor_syndrome,
raid6_have_avx512,
"avx512x4",
1 /* Has cache hints */
};
#endif
#endif /* CONFIG_AS_AVX512 */
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