| // 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 */ |