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mirror_zfs/module/zfs/vdev_raidz_math_avx512bw.c
Matthew Macy 006e9a4088 OpenZFS restructuring - move platform specific headers 
Move platform specific Linux headers under include/os/linux/.
Update the build system accordingly to detect the platform.
This lays some of the initial groundwork to supporting building
for other platforms.

As part of this change it was necessary to create both a user
and kernel space sys/simd.h header which can be included in
either context.  No functional change, the source has been
refactored and the relevant #include's updated.

Reviewed-by: Jorgen Lundman <lundman@lundman.net>
Reviewed-by: Igor Kozhukhov <igor@dilos.org>
Signed-off-by: Matthew Macy <mmacy@FreeBSD.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #9198
2019-09-05 09:34:54 -07:00

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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (C) 2016 Romain Dolbeau. All rights reserved.
* Copyright (C) 2016 Gvozden Nešković. All rights reserved.
*/
#include <sys/isa_defs.h>
#if defined(__x86_64) && defined(HAVE_AVX512BW)
#include <sys/types.h>
#include <sys/simd.h>
#define __asm __asm__ __volatile__
#define _REG_CNT(_0, _1, _2, _3, _4, _5, _6, _7, N, ...) N
#define REG_CNT(r...) _REG_CNT(r, 8, 7, 6, 5, 4, 3, 2, 1)
#define VR0_(REG, ...) "zmm"#REG
#define VR1_(_1, REG, ...) "zmm"#REG
#define VR2_(_1, _2, REG, ...) "zmm"#REG
#define VR3_(_1, _2, _3, REG, ...) "zmm"#REG
#define VR4_(_1, _2, _3, _4, REG, ...) "zmm"#REG
#define VR5_(_1, _2, _3, _4, _5, REG, ...) "zmm"#REG
#define VR6_(_1, _2, _3, _4, _5, _6, REG, ...) "zmm"#REG
#define VR7_(_1, _2, _3, _4, _5, _6, _7, REG, ...) "zmm"#REG
#define VR0(r...) VR0_(r)
#define VR1(r...) VR1_(r)
#define VR2(r...) VR2_(r, 1)
#define VR3(r...) VR3_(r, 1, 2)
#define VR4(r...) VR4_(r, 1, 2)
#define VR5(r...) VR5_(r, 1, 2, 3)
#define VR6(r...) VR6_(r, 1, 2, 3, 4)
#define VR7(r...) VR7_(r, 1, 2, 3, 4, 5)
#define R_01(REG1, REG2, ...) REG1, REG2
#define _R_23(_0, _1, REG2, REG3, ...) REG2, REG3
#define R_23(REG...) _R_23(REG, 1, 2, 3)
#define ZFS_ASM_BUG() ASSERT(0)
extern const uint8_t gf_clmul_mod_lt[4*256][16];
#define ELEM_SIZE 64
typedef struct v {
uint8_t b[ELEM_SIZE] __attribute__((aligned(ELEM_SIZE)));
} v_t;
#define XOR_ACC(src, r...) \
{ \
switch (REG_CNT(r)) { \
case 4: \
__asm( \
"vpxorq 0x00(%[SRC]), %%" VR0(r)", %%" VR0(r) "\n" \
"vpxorq 0x40(%[SRC]), %%" VR1(r)", %%" VR1(r) "\n" \
"vpxorq 0x80(%[SRC]), %%" VR2(r)", %%" VR2(r) "\n" \
"vpxorq 0xc0(%[SRC]), %%" VR3(r)", %%" VR3(r) "\n" \
: : [SRC] "r" (src)); \
break; \
case 2: \
__asm( \
"vpxorq 0x00(%[SRC]), %%" VR0(r)", %%" VR0(r) "\n" \
"vpxorq 0x40(%[SRC]), %%" VR1(r)", %%" VR1(r) "\n" \
: : [SRC] "r" (src)); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define XOR(r...) \
{ \
switch (REG_CNT(r)) { \
case 8: \
__asm( \
"vpxorq %" VR0(r) ", %" VR4(r)", %" VR4(r) "\n" \
"vpxorq %" VR1(r) ", %" VR5(r)", %" VR5(r) "\n" \
"vpxorq %" VR2(r) ", %" VR6(r)", %" VR6(r) "\n" \
"vpxorq %" VR3(r) ", %" VR7(r)", %" VR7(r)); \
break; \
case 4: \
__asm( \
"vpxorq %" VR0(r) ", %" VR2(r)", %" VR2(r) "\n" \
"vpxorq %" VR1(r) ", %" VR3(r)", %" VR3(r)); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define ZERO(r...) XOR(r, r)
#define COPY(r...) \
{ \
switch (REG_CNT(r)) { \
case 8: \
__asm( \
"vmovdqa64 %" VR0(r) ", %" VR4(r) "\n" \
"vmovdqa64 %" VR1(r) ", %" VR5(r) "\n" \
"vmovdqa64 %" VR2(r) ", %" VR6(r) "\n" \
"vmovdqa64 %" VR3(r) ", %" VR7(r)); \
break; \
case 4: \
__asm( \
"vmovdqa64 %" VR0(r) ", %" VR2(r) "\n" \
"vmovdqa64 %" VR1(r) ", %" VR3(r)); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define LOAD(src, r...) \
{ \
switch (REG_CNT(r)) { \
case 4: \
__asm( \
"vmovdqa64 0x00(%[SRC]), %%" VR0(r) "\n" \
"vmovdqa64 0x40(%[SRC]), %%" VR1(r) "\n" \
"vmovdqa64 0x80(%[SRC]), %%" VR2(r) "\n" \
"vmovdqa64 0xc0(%[SRC]), %%" VR3(r) "\n" \
: : [SRC] "r" (src)); \
break; \
case 2: \
__asm( \
"vmovdqa64 0x00(%[SRC]), %%" VR0(r) "\n" \
"vmovdqa64 0x40(%[SRC]), %%" VR1(r) "\n" \
: : [SRC] "r" (src)); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define STORE(dst, r...) \
{ \
switch (REG_CNT(r)) { \
case 4: \
__asm( \
"vmovdqa64 %%" VR0(r) ", 0x00(%[DST])\n" \
"vmovdqa64 %%" VR1(r) ", 0x40(%[DST])\n" \
"vmovdqa64 %%" VR2(r) ", 0x80(%[DST])\n" \
"vmovdqa64 %%" VR3(r) ", 0xc0(%[DST])\n" \
: : [DST] "r" (dst)); \
break; \
case 2: \
__asm( \
"vmovdqa64 %%" VR0(r) ", 0x00(%[DST])\n" \
"vmovdqa64 %%" VR1(r) ", 0x40(%[DST])\n" \
: : [DST] "r" (dst)); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define MUL2_SETUP() \
{ \
__asm("vmovq %0, %%xmm22" :: "r"(0x1d1d1d1d1d1d1d1d)); \
__asm("vpbroadcastq %xmm22, %zmm22"); \
__asm("vpxord %zmm23, %zmm23 ,%zmm23"); \
}
#define _MUL2(r...) \
{ \
switch (REG_CNT(r)) { \
case 2: \
__asm( \
"vpcmpb $1, %zmm23, %" VR0(r)", %k1\n" \
"vpcmpb $1, %zmm23, %" VR1(r)", %k2\n" \
"vpaddb %" VR0(r)", %" VR0(r)", %" VR0(r) "\n" \
"vpaddb %" VR1(r)", %" VR1(r)", %" VR1(r) "\n" \
"vpxord %zmm22, %" VR0(r)", %zmm12\n" \
"vpxord %zmm22, %" VR1(r)", %zmm13\n" \
"vmovdqu8 %zmm12, %" VR0(r) "{%k1}\n" \
"vmovdqu8 %zmm13, %" VR1(r) "{%k2}"); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define MUL2(r...) \
{ \
switch (REG_CNT(r)) { \
case 4: \
_MUL2(R_01(r)); \
_MUL2(R_23(r)); \
break; \
case 2: \
_MUL2(r); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define MUL4(r...) \
{ \
MUL2(r); \
MUL2(r); \
}
#define _0f "zmm15"
#define _as "zmm14"
#define _bs "zmm13"
#define _ltmod "zmm12"
#define _ltmul "zmm11"
#define _ta "zmm10"
#define _tb "zmm15"
static const uint8_t __attribute__((aligned(64))) _mul_mask = 0x0F;
#define _MULx2(c, r...) \
{ \
switch (REG_CNT(r)) { \
case 2: \
__asm( \
"vpbroadcastb (%[mask]), %%" _0f "\n" \
/* upper bits */ \
"vbroadcasti32x4 0x00(%[lt]), %%" _ltmod "\n" \
"vbroadcasti32x4 0x10(%[lt]), %%" _ltmul "\n" \
\
"vpsraw $0x4, %%" VR0(r) ", %%"_as "\n" \
"vpsraw $0x4, %%" VR1(r) ", %%"_bs "\n" \
"vpandq %%" _0f ", %%" VR0(r) ", %%" VR0(r) "\n" \
"vpandq %%" _0f ", %%" VR1(r) ", %%" VR1(r) "\n" \
"vpandq %%" _0f ", %%" _as ", %%" _as "\n" \
"vpandq %%" _0f ", %%" _bs ", %%" _bs "\n" \
\
"vpshufb %%" _as ", %%" _ltmod ", %%" _ta "\n" \
"vpshufb %%" _bs ", %%" _ltmod ", %%" _tb "\n" \
"vpshufb %%" _as ", %%" _ltmul ", %%" _as "\n" \
"vpshufb %%" _bs ", %%" _ltmul ", %%" _bs "\n" \
/* lower bits */ \
"vbroadcasti32x4 0x20(%[lt]), %%" _ltmod "\n" \
"vbroadcasti32x4 0x30(%[lt]), %%" _ltmul "\n" \
\
"vpxorq %%" _ta ", %%" _as ", %%" _as "\n" \
"vpxorq %%" _tb ", %%" _bs ", %%" _bs "\n" \
\
"vpshufb %%" VR0(r) ", %%" _ltmod ", %%" _ta "\n" \
"vpshufb %%" VR1(r) ", %%" _ltmod ", %%" _tb "\n" \
"vpshufb %%" VR0(r) ", %%" _ltmul ", %%" VR0(r) "\n"\
"vpshufb %%" VR1(r) ", %%" _ltmul ", %%" VR1(r) "\n"\
\
"vpxorq %%" _ta ", %%" VR0(r) ", %%" VR0(r) "\n" \
"vpxorq %%" _as ", %%" VR0(r) ", %%" VR0(r) "\n" \
"vpxorq %%" _tb ", %%" VR1(r) ", %%" VR1(r) "\n" \
"vpxorq %%" _bs ", %%" VR1(r) ", %%" VR1(r) "\n" \
: : [mask] "r" (&_mul_mask), \
[lt] "r" (gf_clmul_mod_lt[4*(c)])); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define MUL(c, r...) \
{ \
switch (REG_CNT(r)) { \
case 4: \
_MULx2(c, R_01(r)); \
_MULx2(c, R_23(r)); \
break; \
case 2: \
_MULx2(c, R_01(r)); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define raidz_math_begin() kfpu_begin()
#define raidz_math_end() kfpu_end()
/*
* ZERO, COPY, and MUL operations are already 2x unrolled, which means that
* the stride of these operations for avx512 must not exceed 4. Otherwise, a
* single step would exceed 512B block size.
*/
#define SYN_STRIDE 4
#define ZERO_STRIDE 4
#define ZERO_DEFINE() {}
#define ZERO_D 0, 1, 2, 3
#define COPY_STRIDE 4
#define COPY_DEFINE() {}
#define COPY_D 0, 1, 2, 3
#define ADD_STRIDE 4
#define ADD_DEFINE() {}
#define ADD_D 0, 1, 2, 3
#define MUL_STRIDE 4
#define MUL_DEFINE() {}
#define MUL_D 0, 1, 2, 3
#define GEN_P_STRIDE 4
#define GEN_P_DEFINE() {}
#define GEN_P_P 0, 1, 2, 3
#define GEN_PQ_STRIDE 4
#define GEN_PQ_DEFINE() {}
#define GEN_PQ_D 0, 1, 2, 3
#define GEN_PQ_C 4, 5, 6, 7
#define GEN_PQR_STRIDE 4
#define GEN_PQR_DEFINE() {}
#define GEN_PQR_D 0, 1, 2, 3
#define GEN_PQR_C 4, 5, 6, 7
#define SYN_Q_DEFINE() {}
#define SYN_Q_D 0, 1, 2, 3
#define SYN_Q_X 4, 5, 6, 7
#define SYN_R_DEFINE() {}
#define SYN_R_D 0, 1, 2, 3
#define SYN_R_X 4, 5, 6, 7
#define SYN_PQ_DEFINE() {}
#define SYN_PQ_D 0, 1, 2, 3
#define SYN_PQ_X 4, 5, 6, 7
#define REC_PQ_STRIDE 2
#define REC_PQ_DEFINE() {}
#define REC_PQ_X 0, 1
#define REC_PQ_Y 2, 3
#define REC_PQ_T 4, 5
#define SYN_PR_DEFINE() {}
#define SYN_PR_D 0, 1, 2, 3
#define SYN_PR_X 4, 5, 6, 7
#define REC_PR_STRIDE 2
#define REC_PR_DEFINE() {}
#define REC_PR_X 0, 1
#define REC_PR_Y 2, 3
#define REC_PR_T 4, 5
#define SYN_QR_DEFINE() {}
#define SYN_QR_D 0, 1, 2, 3
#define SYN_QR_X 4, 5, 6, 7
#define REC_QR_STRIDE 2
#define REC_QR_DEFINE() {}
#define REC_QR_X 0, 1
#define REC_QR_Y 2, 3
#define REC_QR_T 4, 5
#define SYN_PQR_DEFINE() {}
#define SYN_PQR_D 0, 1, 2, 3
#define SYN_PQR_X 4, 5, 6, 7
#define REC_PQR_STRIDE 2
#define REC_PQR_DEFINE() {}
#define REC_PQR_X 0, 1
#define REC_PQR_Y 2, 3
#define REC_PQR_Z 4, 5
#define REC_PQR_XS 6, 7
#define REC_PQR_YS 8, 9
#include <sys/vdev_raidz_impl.h>
#include "vdev_raidz_math_impl.h"
DEFINE_GEN_METHODS(avx512bw);
DEFINE_REC_METHODS(avx512bw);
static boolean_t
raidz_will_avx512bw_work(void)
{
return (kfpu_allowed() && zfs_avx_available() &&
zfs_avx512f_available() && zfs_avx512bw_available());
}
const raidz_impl_ops_t vdev_raidz_avx512bw_impl = {
.init = NULL,
.fini = NULL,
.gen = RAIDZ_GEN_METHODS(avx512bw),
.rec = RAIDZ_REC_METHODS(avx512bw),
.is_supported = &raidz_will_avx512bw_work,
.name = "avx512bw"
};
#endif /* defined(__x86_64) && defined(HAVE_AVX512BW) */
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