+++ /dev/null
-/*
- * Copyright (C) 2013 Andrea Mazzoleni
- *
- * 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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include "internal.h"
-
-#if defined(CONFIG_X86) && defined(CONFIG_SSE2)
-static const struct gfzconst16 {
- uint8_t poly[16];
- uint8_t half[16];
- uint8_t low7[16];
-} gfzconst16 __aligned(64) =
-{
- {
- 0x1d, 0x1d, 0x1d, 0x1d, 0x1d, 0x1d, 0x1d, 0x1d,
- 0x1d, 0x1d, 0x1d, 0x1d, 0x1d, 0x1d, 0x1d, 0x1d
- },
- {
- 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e,
- 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e
- },
- {
- 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f,
- 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f
- }
-};
-#endif
-
-#if defined(CONFIG_X86) && defined(CONFIG_SSE2)
-/*
- * GENz (triple parity with powers of 2^-1) SSE2 implementation
- */
-void raid_genz_sse2(int nd, size_t size, void **vv)
-{
- uint8_t **v = (uint8_t**)vv;
- uint8_t *p;
- uint8_t *q;
- uint8_t *r;
- int d, l;
- size_t i;
-
- l = nd - 1;
- p = v[nd];
- q = v[nd + 1];
- r = v[nd + 2];
-
- raid_sse_begin();
-
- asm volatile ("movdqa %0,%%xmm7" : : "m" (gfzconst16.poly[0]));
- asm volatile ("movdqa %0,%%xmm3" : : "m" (gfzconst16.half[0]));
- asm volatile ("movdqa %0,%%xmm6" : : "m" (gfzconst16.low7[0]));
-
- for (i = 0; i < size; i += 16) {
- asm volatile ("movdqa %0,%%xmm0" : : "m" (v[l][i]));
- asm volatile ("movdqa %xmm0,%xmm1");
- asm volatile ("movdqa %xmm0,%xmm2");
- for (d = l - 1; d >= 0; --d) {
- asm volatile ("pxor %xmm4,%xmm4");
- asm volatile ("pcmpgtb %xmm1,%xmm4");
- asm volatile ("paddb %xmm1,%xmm1");
- asm volatile ("pand %xmm7,%xmm4");
- asm volatile ("pxor %xmm4,%xmm1");
-
- asm volatile ("movdqa %xmm2,%xmm4");
- asm volatile ("pxor %xmm5,%xmm5");
- asm volatile ("psllw $7,%xmm4");
- asm volatile ("psrlw $1,%xmm2");
- asm volatile ("pcmpgtb %xmm4,%xmm5");
- asm volatile ("pand %xmm6,%xmm2");
- asm volatile ("pand %xmm3,%xmm5");
- asm volatile ("pxor %xmm5,%xmm2");
-
- asm volatile ("movdqa %0,%%xmm4" : : "m" (v[d][i]));
- asm volatile ("pxor %xmm4,%xmm0");
- asm volatile ("pxor %xmm4,%xmm1");
- asm volatile ("pxor %xmm4,%xmm2");
- }
- asm volatile ("movntdq %%xmm0,%0" : "=m" (p[i]));
- asm volatile ("movntdq %%xmm1,%0" : "=m" (q[i]));
- asm volatile ("movntdq %%xmm2,%0" : "=m" (r[i]));
- }
-
- raid_sse_end();
-}
-#endif
-
-#if defined(CONFIG_X86_64) && defined(CONFIG_SSE2)
-/*
- * GENz (triple parity with powers of 2^-1) SSE2 implementation
- *
- * Note that it uses 16 registers, meaning that x64 is required.
- */
-void raid_genz_sse2ext(int nd, size_t size, void **vv)
-{
- uint8_t **v = (uint8_t**)vv;
- uint8_t *p;
- uint8_t *q;
- uint8_t *r;
- int d, l;
- size_t i;
-
- l = nd - 1;
- p = v[nd];
- q = v[nd + 1];
- r = v[nd + 2];
-
- raid_sse_begin();
-
- asm volatile ("movdqa %0,%%xmm7" : : "m" (gfzconst16.poly[0]));
- asm volatile ("movdqa %0,%%xmm3" : : "m" (gfzconst16.half[0]));
- asm volatile ("movdqa %0,%%xmm11" : : "m" (gfzconst16.low7[0]));
-
- for (i = 0; i < size; i += 32) {
- asm volatile ("movdqa %0,%%xmm0" : : "m" (v[l][i]));
- asm volatile ("movdqa %0,%%xmm8" : : "m" (v[l][i + 16]));
- asm volatile ("movdqa %xmm0,%xmm1");
- asm volatile ("movdqa %xmm8,%xmm9");
- asm volatile ("movdqa %xmm0,%xmm2");
- asm volatile ("movdqa %xmm8,%xmm10");
- for (d = l - 1; d >= 0; --d) {
- asm volatile ("movdqa %xmm2,%xmm6");
- asm volatile ("movdqa %xmm10,%xmm14");
- asm volatile ("pxor %xmm4,%xmm4");
- asm volatile ("pxor %xmm12,%xmm12");
- asm volatile ("pxor %xmm5,%xmm5");
- asm volatile ("pxor %xmm13,%xmm13");
- asm volatile ("psllw $7,%xmm6");
- asm volatile ("psllw $7,%xmm14");
- asm volatile ("psrlw $1,%xmm2");
- asm volatile ("psrlw $1,%xmm10");
- asm volatile ("pcmpgtb %xmm1,%xmm4");
- asm volatile ("pcmpgtb %xmm9,%xmm12");
- asm volatile ("pcmpgtb %xmm6,%xmm5");
- asm volatile ("pcmpgtb %xmm14,%xmm13");
- asm volatile ("paddb %xmm1,%xmm1");
- asm volatile ("paddb %xmm9,%xmm9");
- asm volatile ("pand %xmm11,%xmm2");
- asm volatile ("pand %xmm11,%xmm10");
- asm volatile ("pand %xmm7,%xmm4");
- asm volatile ("pand %xmm7,%xmm12");
- asm volatile ("pand %xmm3,%xmm5");
- asm volatile ("pand %xmm3,%xmm13");
- asm volatile ("pxor %xmm4,%xmm1");
- asm volatile ("pxor %xmm12,%xmm9");
- asm volatile ("pxor %xmm5,%xmm2");
- asm volatile ("pxor %xmm13,%xmm10");
-
- asm volatile ("movdqa %0,%%xmm4" : : "m" (v[d][i]));
- asm volatile ("movdqa %0,%%xmm12" : : "m" (v[d][i + 16]));
- asm volatile ("pxor %xmm4,%xmm0");
- asm volatile ("pxor %xmm4,%xmm1");
- asm volatile ("pxor %xmm4,%xmm2");
- asm volatile ("pxor %xmm12,%xmm8");
- asm volatile ("pxor %xmm12,%xmm9");
- asm volatile ("pxor %xmm12,%xmm10");
- }
- asm volatile ("movntdq %%xmm0,%0" : "=m" (p[i]));
- asm volatile ("movntdq %%xmm8,%0" : "=m" (p[i + 16]));
- asm volatile ("movntdq %%xmm1,%0" : "=m" (q[i]));
- asm volatile ("movntdq %%xmm9,%0" : "=m" (q[i + 16]));
- asm volatile ("movntdq %%xmm2,%0" : "=m" (r[i]));
- asm volatile ("movntdq %%xmm10,%0" : "=m" (r[i + 16]));
- }
-
- raid_sse_end();
-}
-#endif
-
-#if defined(CONFIG_X86_64) && defined(CONFIG_AVX2)
-/*
- * GENz (triple parity with powers of 2^-1) AVX2 implementation
- *
- * Note that it uses 16 registers, meaning that x64 is required.
- */
-void raid_genz_avx2ext(int nd, size_t size, void **vv)
-{
- uint8_t **v = (uint8_t**)vv;
- uint8_t *p;
- uint8_t *q;
- uint8_t *r;
- int d, l;
- size_t i;
-
- l = nd - 1;
- p = v[nd];
- q = v[nd + 1];
- r = v[nd + 2];
-
- raid_avx_begin();
-
- asm volatile ("vbroadcasti128 %0,%%ymm7" : : "m" (gfzconst16.poly[0]));
- asm volatile ("vbroadcasti128 %0,%%ymm3" : : "m" (gfzconst16.half[0]));
- asm volatile ("vbroadcasti128 %0,%%ymm11" : : "m" (gfzconst16.low7[0]));
- asm volatile ("vpxor %ymm15,%ymm15,%ymm15");
-
- for (i = 0; i < size; i += 64) {
- asm volatile ("vmovdqa %0,%%ymm0" : : "m" (v[l][i]));
- asm volatile ("vmovdqa %0,%%ymm8" : : "m" (v[l][i + 32]));
- asm volatile ("vmovdqa %ymm0,%ymm1");
- asm volatile ("vmovdqa %ymm8,%ymm9");
- asm volatile ("vmovdqa %ymm0,%ymm2");
- asm volatile ("vmovdqa %ymm8,%ymm10");
- for (d = l - 1; d >= 0; --d) {
- asm volatile ("vpsllw $7,%ymm2,%ymm6");
- asm volatile ("vpsllw $7,%ymm10,%ymm14");
- asm volatile ("vpsrlw $1,%ymm2,%ymm2");
- asm volatile ("vpsrlw $1,%ymm10,%ymm10");
- asm volatile ("vpcmpgtb %ymm1,%ymm15,%ymm4");
- asm volatile ("vpcmpgtb %ymm9,%ymm15,%ymm12");
- asm volatile ("vpcmpgtb %ymm6,%ymm15,%ymm5");
- asm volatile ("vpcmpgtb %ymm14,%ymm15,%ymm13");
- asm volatile ("vpaddb %ymm1,%ymm1,%ymm1");
- asm volatile ("vpaddb %ymm9,%ymm9,%ymm9");
- asm volatile ("vpand %ymm11,%ymm2,%ymm2");
- asm volatile ("vpand %ymm11,%ymm10,%ymm10");
- asm volatile ("vpand %ymm7,%ymm4,%ymm4");
- asm volatile ("vpand %ymm7,%ymm12,%ymm12");
- asm volatile ("vpand %ymm3,%ymm5,%ymm5");
- asm volatile ("vpand %ymm3,%ymm13,%ymm13");
- asm volatile ("vpxor %ymm4,%ymm1,%ymm1");
- asm volatile ("vpxor %ymm12,%ymm9,%ymm9");
- asm volatile ("vpxor %ymm5,%ymm2,%ymm2");
- asm volatile ("vpxor %ymm13,%ymm10,%ymm10");
-
- asm volatile ("vmovdqa %0,%%ymm4" : : "m" (v[d][i]));
- asm volatile ("vmovdqa %0,%%ymm12" : : "m" (v[d][i + 32]));
- asm volatile ("vpxor %ymm4,%ymm0,%ymm0");
- asm volatile ("vpxor %ymm4,%ymm1,%ymm1");
- asm volatile ("vpxor %ymm4,%ymm2,%ymm2");
- asm volatile ("vpxor %ymm12,%ymm8,%ymm8");
- asm volatile ("vpxor %ymm12,%ymm9,%ymm9");
- asm volatile ("vpxor %ymm12,%ymm10,%ymm10");
- }
- asm volatile ("vmovntdq %%ymm0,%0" : "=m" (p[i]));
- asm volatile ("vmovntdq %%ymm8,%0" : "=m" (p[i + 32]));
- asm volatile ("vmovntdq %%ymm1,%0" : "=m" (q[i]));
- asm volatile ("vmovntdq %%ymm9,%0" : "=m" (q[i + 32]));
- asm volatile ("vmovntdq %%ymm2,%0" : "=m" (r[i]));
- asm volatile ("vmovntdq %%ymm10,%0" : "=m" (r[i + 32]));
- }
-
- raid_avx_end();
-}
-#endif
-
projects / bcachefs-tools-debian / blobdiff