411 lines
11 KiB
C
411 lines
11 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (C) 2016 Gvozden Nešković. All rights reserved.
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*/
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#include <sys/isa_defs.h>
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#if defined(__x86_64) && defined(HAVE_AVX2)
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#include <sys/types.h>
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#include <linux/simd_x86.h>
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#define __asm __asm__ __volatile__
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#define _REG_CNT(_0, _1, _2, _3, _4, _5, _6, _7, N, ...) N
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#define REG_CNT(r...) _REG_CNT(r, 8, 7, 6, 5, 4, 3, 2, 1)
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#define VR0_(REG, ...) "ymm"#REG
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#define VR1_(_1, REG, ...) "ymm"#REG
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#define VR2_(_1, _2, REG, ...) "ymm"#REG
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#define VR3_(_1, _2, _3, REG, ...) "ymm"#REG
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#define VR4_(_1, _2, _3, _4, REG, ...) "ymm"#REG
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#define VR5_(_1, _2, _3, _4, _5, REG, ...) "ymm"#REG
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#define VR6_(_1, _2, _3, _4, _5, _6, REG, ...) "ymm"#REG
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#define VR7_(_1, _2, _3, _4, _5, _6, _7, REG, ...) "ymm"#REG
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#define VR0(r...) VR0_(r)
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#define VR1(r...) VR1_(r)
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#define VR2(r...) VR2_(r, 1)
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#define VR3(r...) VR3_(r, 1, 2)
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#define VR4(r...) VR4_(r, 1, 2)
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#define VR5(r...) VR5_(r, 1, 2, 3)
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#define VR6(r...) VR6_(r, 1, 2, 3, 4)
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#define VR7(r...) VR7_(r, 1, 2, 3, 4, 5)
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#define R_01(REG1, REG2, ...) REG1, REG2
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#define _R_23(_0, _1, REG2, REG3, ...) REG2, REG3
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#define R_23(REG...) _R_23(REG, 1, 2, 3)
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#define ZFS_ASM_BUG() ASSERT(0)
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extern const uint8_t gf_clmul_mod_lt[4*256][16];
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#define ELEM_SIZE 32
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typedef struct v {
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uint8_t b[ELEM_SIZE] __attribute__((aligned(ELEM_SIZE)));
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} v_t;
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#define XOR_ACC(src, r...) \
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{ \
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switch (REG_CNT(r)) { \
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case 4: \
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__asm( \
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"vpxor 0x00(%[SRC]), %%" VR0(r)", %%" VR0(r) "\n" \
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"vpxor 0x20(%[SRC]), %%" VR1(r)", %%" VR1(r) "\n" \
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"vpxor 0x40(%[SRC]), %%" VR2(r)", %%" VR2(r) "\n" \
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"vpxor 0x60(%[SRC]), %%" VR3(r)", %%" VR3(r) "\n" \
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: : [SRC] "r" (src)); \
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break; \
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case 2: \
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__asm( \
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"vpxor 0x00(%[SRC]), %%" VR0(r)", %%" VR0(r) "\n" \
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"vpxor 0x20(%[SRC]), %%" VR1(r)", %%" VR1(r) "\n" \
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: : [SRC] "r" (src)); \
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break; \
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default: \
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ZFS_ASM_BUG(); \
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} \
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}
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#define XOR(r...) \
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{ \
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switch (REG_CNT(r)) { \
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case 8: \
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__asm( \
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"vpxor %" VR0(r) ", %" VR4(r)", %" VR4(r) "\n" \
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"vpxor %" VR1(r) ", %" VR5(r)", %" VR5(r) "\n" \
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"vpxor %" VR2(r) ", %" VR6(r)", %" VR6(r) "\n" \
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"vpxor %" VR3(r) ", %" VR7(r)", %" VR7(r)); \
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break; \
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case 4: \
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__asm( \
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"vpxor %" VR0(r) ", %" VR2(r)", %" VR2(r) "\n" \
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"vpxor %" VR1(r) ", %" VR3(r)", %" VR3(r)); \
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break; \
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default: \
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ZFS_ASM_BUG(); \
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} \
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}
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#define ZERO(r...) XOR(r, r)
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#define COPY(r...) \
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{ \
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switch (REG_CNT(r)) { \
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case 8: \
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__asm( \
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"vmovdqa %" VR0(r) ", %" VR4(r) "\n" \
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"vmovdqa %" VR1(r) ", %" VR5(r) "\n" \
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"vmovdqa %" VR2(r) ", %" VR6(r) "\n" \
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"vmovdqa %" VR3(r) ", %" VR7(r)); \
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break; \
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case 4: \
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__asm( \
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"vmovdqa %" VR0(r) ", %" VR2(r) "\n" \
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"vmovdqa %" VR1(r) ", %" VR3(r)); \
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break; \
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default: \
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ZFS_ASM_BUG(); \
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} \
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}
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#define LOAD(src, r...) \
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{ \
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switch (REG_CNT(r)) { \
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case 4: \
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__asm( \
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"vmovdqa 0x00(%[SRC]), %%" VR0(r) "\n" \
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"vmovdqa 0x20(%[SRC]), %%" VR1(r) "\n" \
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"vmovdqa 0x40(%[SRC]), %%" VR2(r) "\n" \
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"vmovdqa 0x60(%[SRC]), %%" VR3(r) "\n" \
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: : [SRC] "r" (src)); \
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break; \
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case 2: \
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__asm( \
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"vmovdqa 0x00(%[SRC]), %%" VR0(r) "\n" \
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"vmovdqa 0x20(%[SRC]), %%" VR1(r) "\n" \
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: : [SRC] "r" (src)); \
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break; \
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default: \
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ZFS_ASM_BUG(); \
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} \
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}
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#define STORE(dst, r...) \
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{ \
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switch (REG_CNT(r)) { \
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case 4: \
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__asm( \
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"vmovdqa %%" VR0(r) ", 0x00(%[DST])\n" \
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"vmovdqa %%" VR1(r) ", 0x20(%[DST])\n" \
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"vmovdqa %%" VR2(r) ", 0x40(%[DST])\n" \
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"vmovdqa %%" VR3(r) ", 0x60(%[DST])\n" \
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: : [DST] "r" (dst)); \
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break; \
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case 2: \
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__asm( \
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"vmovdqa %%" VR0(r) ", 0x00(%[DST])\n" \
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"vmovdqa %%" VR1(r) ", 0x20(%[DST])\n" \
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: : [DST] "r" (dst)); \
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break; \
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default: \
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ZFS_ASM_BUG(); \
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} \
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}
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#define FLUSH() \
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{ \
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__asm("vzeroupper"); \
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}
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#define MUL2_SETUP() \
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{ \
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__asm("vmovq %0, %%xmm14" :: "r"(0x1d1d1d1d1d1d1d1d)); \
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__asm("vpbroadcastq %xmm14, %ymm14"); \
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__asm("vpxor %ymm15, %ymm15 ,%ymm15"); \
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}
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#define _MUL2(r...) \
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{ \
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switch (REG_CNT(r)) { \
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case 2: \
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__asm( \
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"vpcmpgtb %" VR0(r)", %ymm15, %ymm12\n" \
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"vpcmpgtb %" VR1(r)", %ymm15, %ymm13\n" \
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"vpaddb %" VR0(r)", %" VR0(r)", %" VR0(r) "\n" \
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"vpaddb %" VR1(r)", %" VR1(r)", %" VR1(r) "\n" \
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"vpand %ymm14, %ymm12, %ymm12\n" \
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"vpand %ymm14, %ymm13, %ymm13\n" \
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"vpxor %ymm12, %" VR0(r)", %" VR0(r) "\n" \
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"vpxor %ymm13, %" VR1(r)", %" VR1(r)); \
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break; \
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default: \
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ZFS_ASM_BUG(); \
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} \
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}
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#define MUL2(r...) \
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{ \
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switch (REG_CNT(r)) { \
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case 4: \
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_MUL2(R_01(r)); \
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_MUL2(R_23(r)); \
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break; \
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case 2: \
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_MUL2(r); \
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break; \
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default: \
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ZFS_ASM_BUG(); \
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} \
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}
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#define MUL4(r...) \
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{ \
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MUL2(r); \
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MUL2(r); \
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}
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#define _0f "ymm15"
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#define _as "ymm14"
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#define _bs "ymm13"
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#define _ltmod "ymm12"
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#define _ltmul "ymm11"
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#define _ta "ymm10"
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#define _tb "ymm15"
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static const uint8_t __attribute__((aligned(32))) _mul_mask = 0x0F;
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#define _MULx2(c, r...) \
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{ \
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switch (REG_CNT(r)) { \
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case 2: \
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__asm( \
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"vpbroadcastb (%[mask]), %%" _0f "\n" \
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/* upper bits */ \
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"vbroadcasti128 0x00(%[lt]), %%" _ltmod "\n" \
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"vbroadcasti128 0x10(%[lt]), %%" _ltmul "\n" \
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\
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"vpsraw $0x4, %%" VR0(r) ", %%"_as "\n" \
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"vpsraw $0x4, %%" VR1(r) ", %%"_bs "\n" \
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"vpand %%" _0f ", %%" VR0(r) ", %%" VR0(r) "\n" \
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"vpand %%" _0f ", %%" VR1(r) ", %%" VR1(r) "\n" \
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"vpand %%" _0f ", %%" _as ", %%" _as "\n" \
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"vpand %%" _0f ", %%" _bs ", %%" _bs "\n" \
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\
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"vpshufb %%" _as ", %%" _ltmod ", %%" _ta "\n" \
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"vpshufb %%" _bs ", %%" _ltmod ", %%" _tb "\n" \
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"vpshufb %%" _as ", %%" _ltmul ", %%" _as "\n" \
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"vpshufb %%" _bs ", %%" _ltmul ", %%" _bs "\n" \
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/* lower bits */ \
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"vbroadcasti128 0x20(%[lt]), %%" _ltmod "\n" \
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"vbroadcasti128 0x30(%[lt]), %%" _ltmul "\n" \
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\
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"vpxor %%" _ta ", %%" _as ", %%" _as "\n" \
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"vpxor %%" _tb ", %%" _bs ", %%" _bs "\n" \
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\
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"vpshufb %%" VR0(r) ", %%" _ltmod ", %%" _ta "\n" \
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"vpshufb %%" VR1(r) ", %%" _ltmod ", %%" _tb "\n" \
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"vpshufb %%" VR0(r) ", %%" _ltmul ", %%" VR0(r) "\n"\
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"vpshufb %%" VR1(r) ", %%" _ltmul ", %%" VR1(r) "\n"\
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\
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"vpxor %%" _ta ", %%" VR0(r) ", %%" VR0(r) "\n" \
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"vpxor %%" _as ", %%" VR0(r) ", %%" VR0(r) "\n" \
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"vpxor %%" _tb ", %%" VR1(r) ", %%" VR1(r) "\n" \
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"vpxor %%" _bs ", %%" VR1(r) ", %%" VR1(r) "\n" \
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: : [mask] "r" (&_mul_mask), \
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[lt] "r" (gf_clmul_mod_lt[4*(c)])); \
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break; \
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default: \
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ZFS_ASM_BUG(); \
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} \
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}
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#define MUL(c, r...) \
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{ \
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switch (REG_CNT(r)) { \
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case 4: \
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_MULx2(c, R_01(r)); \
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_MULx2(c, R_23(r)); \
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break; \
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case 2: \
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_MULx2(c, R_01(r)); \
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break; \
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default: \
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ZFS_ASM_BUG(); \
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} \
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}
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#define raidz_math_begin() kfpu_begin()
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#define raidz_math_end() \
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{ \
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FLUSH(); \
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kfpu_end(); \
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}
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#define SYN_STRIDE 4
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#define ZERO_STRIDE 4
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#define ZERO_DEFINE() {}
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#define ZERO_D 0, 1, 2, 3
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#define COPY_STRIDE 4
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#define COPY_DEFINE() {}
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#define COPY_D 0, 1, 2, 3
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#define ADD_STRIDE 4
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#define ADD_DEFINE() {}
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#define ADD_D 0, 1, 2, 3
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#define MUL_STRIDE 4
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#define MUL_DEFINE() {}
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#define MUL_D 0, 1, 2, 3
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#define GEN_P_STRIDE 4
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#define GEN_P_DEFINE() {}
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#define GEN_P_P 0, 1, 2, 3
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#define GEN_PQ_STRIDE 4
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#define GEN_PQ_DEFINE() {}
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#define GEN_PQ_D 0, 1, 2, 3
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#define GEN_PQ_C 4, 5, 6, 7
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#define GEN_PQR_STRIDE 4
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#define GEN_PQR_DEFINE() {}
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#define GEN_PQR_D 0, 1, 2, 3
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#define GEN_PQR_C 4, 5, 6, 7
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#define SYN_Q_DEFINE() {}
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#define SYN_Q_D 0, 1, 2, 3
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#define SYN_Q_X 4, 5, 6, 7
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#define SYN_R_DEFINE() {}
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#define SYN_R_D 0, 1, 2, 3
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#define SYN_R_X 4, 5, 6, 7
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#define SYN_PQ_DEFINE() {}
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#define SYN_PQ_D 0, 1, 2, 3
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#define SYN_PQ_X 4, 5, 6, 7
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#define REC_PQ_STRIDE 2
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#define REC_PQ_DEFINE() {}
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#define REC_PQ_X 0, 1
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#define REC_PQ_Y 2, 3
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#define REC_PQ_T 4, 5
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#define SYN_PR_DEFINE() {}
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#define SYN_PR_D 0, 1, 2, 3
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#define SYN_PR_X 4, 5, 6, 7
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#define REC_PR_STRIDE 2
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#define REC_PR_DEFINE() {}
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#define REC_PR_X 0, 1
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#define REC_PR_Y 2, 3
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#define REC_PR_T 4, 5
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#define SYN_QR_DEFINE() {}
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#define SYN_QR_D 0, 1, 2, 3
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#define SYN_QR_X 4, 5, 6, 7
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#define REC_QR_STRIDE 2
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#define REC_QR_DEFINE() {}
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#define REC_QR_X 0, 1
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#define REC_QR_Y 2, 3
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#define REC_QR_T 4, 5
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#define SYN_PQR_DEFINE() {}
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#define SYN_PQR_D 0, 1, 2, 3
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#define SYN_PQR_X 4, 5, 6, 7
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#define REC_PQR_STRIDE 2
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#define REC_PQR_DEFINE() {}
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#define REC_PQR_X 0, 1
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#define REC_PQR_Y 2, 3
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#define REC_PQR_Z 4, 5
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#define REC_PQR_XS 6, 7
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#define REC_PQR_YS 8, 9
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#include <sys/vdev_raidz_impl.h>
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#include "vdev_raidz_math_impl.h"
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DEFINE_GEN_METHODS(avx2);
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DEFINE_REC_METHODS(avx2);
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static boolean_t
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raidz_will_avx2_work(void)
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{
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return (zfs_avx_available() && zfs_avx2_available());
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}
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const raidz_impl_ops_t vdev_raidz_avx2_impl = {
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.init = NULL,
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.fini = NULL,
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.gen = RAIDZ_GEN_METHODS(avx2),
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.rec = RAIDZ_REC_METHODS(avx2),
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.is_supported = &raidz_will_avx2_work,
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.name = "avx2"
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};
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#endif /* defined(__x86_64) && defined(HAVE_AVX2) */
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