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Add AltiVec RAID-Z 

Implements the RAID-Z function using AltiVec SIMD.
This is basically the NEON code translated to AltiVec.

Note that the 'fletcher' algorithm requires 64-bits
operations, and the initial implementations of AltiVec
(PPC74xx a.k.a. G4, PPC970 a.k.a. G5) only has up to
32-bits operations, so no 'fletcher'.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Romain Dolbeau <romain.dolbeau@european-processor-initiative.eu>
Closes #9539
This commit is contained in:
Romain Dolbeau 2020-01-23 20:01:24 +01:00 committed by Brian Behlendorf
parent 1a69856034
commit 35b07497c6
12 changed files with 5200 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
cmd/raidz_test/raidz_test.h
View File

@ -38,6 +38,7 @@ static const char *raidz_impl_names[] = {
"avx512bw",
"aarch64_neon",
"aarch64_neonx2",
"powerpc_altivec",
NULL
};

1
include/os/linux/kernel/linux/Makefile.am
View File

@ -10,6 +10,7 @@ KERNEL_H = \
$(top_srcdir)/include/os/linux/kernel/linux/simd.h \
$(top_srcdir)/include/os/linux/kernel/linux/simd_x86.h \
$(top_srcdir)/include/os/linux/kernel/linux/simd_aarch64.h \
$(top_srcdir)/include/os/linux/kernel/linux/simd_powerpc.h \
$(top_srcdir)/include/os/linux/kernel/linux/mod_compat.h \
$(top_srcdir)/include/os/linux/kernel/linux/page_compat.h \
$(top_srcdir)/include/os/linux/kernel/linux/compiler_compat.h

3
include/os/linux/kernel/linux/simd.h
View File

@ -30,6 +30,9 @@
#elif defined(__aarch64__)
#include <linux/simd_aarch64.h>
#elif defined(__powerpc__)
#include <linux/simd_powerpc.h>
#else
#define kfpu_allowed() 0

109
include/os/linux/kernel/linux/simd_powerpc.h Normal file
View File

@ -0,0 +1,109 @@
/*
* 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) 2019 Romain Dolbeau
* <romain.dolbeau@european-processor-initiative.eu>
*/
/*
* USER API:
*
* Kernel fpu methods:
* kfpu_allowed()
* kfpu_begin()
* kfpu_end()
* kfpu_init()
* kfpu_fini()
*
* SIMD support:
*
* Following functions should be called to determine whether CPU feature
* is supported. All functions are usable in kernel and user space.
* If a SIMD algorithm is using more than one instruction set
* all relevant feature test functions should be called.
*
* Supported features:
* zfs_altivec_available()
*/
#ifndef _LINUX_SIMD_POWERPC_H
#define _LINUX_SIMD_POWERPC_H
/* only for __powerpc__ */
#if defined(__powerpc__)
#include <linux/preempt.h>
#include <linux/export.h>
#include <linux/sched.h>
#include <asm/switch_to.h>
#include <sys/types.h>
#include <linux/version.h>
#define kfpu_allowed() 1
#define kfpu_begin() \
{ \
preempt_disable(); \
enable_kernel_altivec(); \
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)
#define kfpu_end() \
{ \
disable_kernel_altivec(); \
preempt_enable(); \
}
#else
/* seems that before 4.5 no-one bothered disabling ... */
#define kfpu_end() preempt_enable()
#endif
#define kfpu_init() 0
#define kfpu_fini() ((void) 0)
/*
* Check if AltiVec instruction set is available
*/
static inline boolean_t
zfs_altivec_available(void)
{
boolean_t res;
/* suggested by macallan at netbsd dot org */
#if defined(__powerpc64__)
u64 msr;
#else
u32 msr;
#endif
kfpu_begin();
__asm volatile("mfmsr %0" : "=r"(msr));
/*
* 64 bits -> need to check bit 38
* Power ISA Version 3.0B
* p944
* 32 bits -> Need to check bit 6
* AltiVec Technology Programming Environments Manual
* p49 (2-9)
* They are the same, as ppc counts 'backward' ...
*/
res = (msr & 0x2000000) != 0;
kfpu_end();
return (res);
}
#endif /* defined(__powerpc) */
#endif /* _LINUX_SIMD_POWERPC_H */

5
include/sys/vdev_raidz_impl.h
View File

@ -90,7 +90,7 @@ typedef boolean_t (*will_work_f)(void);
typedef void (*init_impl_f)(void);
typedef void (*fini_impl_f)(void);
#define RAIDZ_IMPL_NAME_MAX (16)
#define RAIDZ_IMPL_NAME_MAX (20)
typedef struct raidz_impl_ops {
init_impl_f init;
@ -152,6 +152,9 @@ extern const raidz_impl_ops_t vdev_raidz_avx512bw_impl;
extern const raidz_impl_ops_t vdev_raidz_aarch64_neon_impl;
extern const raidz_impl_ops_t vdev_raidz_aarch64_neonx2_impl;
#endif
#if defined(__powerpc__)
extern const raidz_impl_ops_t vdev_raidz_powerpc_altivec_impl;
#endif
/*
* Commonly used raidz_map helpers

40
lib/libspl/include/sys/simd.h
View File

@ -437,6 +437,46 @@ zfs_avx512vbmi_available(void)
#define kfpu_begin() do {} while (0)
#define kfpu_end() do {} while (0)
#elif defined(__powerpc__)
#define kfpu_allowed() 1
#define kfpu_initialize(tsk) do {} while (0)
#define kfpu_begin() do {} while (0)
#define kfpu_end() do {} while (0)
/*
* Check if AltiVec instruction set is available
* No easy way beyond 'altivec works' :-(
*/
#include <signal.h>
#include <setjmp.h>
#ifdef __ALTIVEC__
static jmp_buf env;
static void sigillhandler(int x)
{
longjmp(env, 1);
}
#endif
static inline boolean_t
zfs_altivec_available(void)
{
boolean_t has_altivec = B_FALSE;
#ifdef __ALTIVEC__
sighandler_t savesig;
savesig = signal(SIGILL, sigillhandler);
if (setjmp(env)) {
signal(SIGILL, savesig);
has_altivec = B_FALSE;
} else {
__asm__ __volatile__("vor 0,0,0\n" : : : "v0");
signal(SIGILL, savesig);
has_altivec = B_TRUE;
}
#endif
return (has_altivec);
}
#else
#define kfpu_allowed() 0

6
lib/libzpool/Makefile.am
View File

@ -130,6 +130,7 @@ KERNEL_C = \
vdev_raidz_math_scalar.c \
vdev_raidz_math_sse2.c \
vdev_raidz_math_ssse3.c \
vdev_raidz_math_powerpc_altivec.c \
vdev_removal.c \
vdev_root.c \
vdev_trim.c \
@ -201,3 +202,8 @@ libzpool_la_LIBADD += $(ZLIB) -ldl
libzpool_la_LDFLAGS = -pthread -version-info 2:0:0
EXTRA_DIST = $(USER_C)
if TARGET_CPU_POWERPC
vdev_raidz_math_powerpc_altivec.$(OBJEXT): CFLAGS += -maltivec
vdev_raidz_math_powerpc_altivec.l$(OBJEXT): CFLAGS += -maltivec
endif

1
man/man5/zfs-module-parameters.5
View File

@ -3374,6 +3374,7 @@ Possible options are:
avx512bw - implementation using AVX512F & AVX512BW instruction sets (64bit x86 only)
aarch64_neon - implementation using NEON (Aarch64/64 bit ARMv8 only)
aarch64_neonx2 - implementation using NEON with more unrolling (Aarch64/64 bit ARMv8 only)
powerpc_altivec - implementation using Altivec (PowerPC only)
.sp
Default value: \fBfastest\fR.
.RE

7
module/zfs/Makefile.in
View File

@ -142,4 +142,11 @@ $(MODULE)-$(CONFIG_X86) += vdev_raidz_math_avx512bw.o
$(MODULE)-$(CONFIG_ARM64) += vdev_raidz_math_aarch64_neon.o
$(MODULE)-$(CONFIG_ARM64) += vdev_raidz_math_aarch64_neonx2.o
$(MODULE)-$(CONFIG_PPC) += vdev_raidz_math_powerpc_altivec.o
$(MODULE)-$(CONFIG_PPC64) += vdev_raidz_math_powerpc_altivec.o
ifeq ($(CONFIG_ALTIVEC),y)
$(obj)/vdev_raidz_math_powerpc_altivec.o: c_flags += -maltivec
endif
-include @abs_top_builddir@/module/os/linux/zfs/Makefile

3
module/zfs/vdev_raidz_math.c
View File

@ -67,6 +67,9 @@ const raidz_impl_ops_t *raidz_all_maths[] = {
&vdev_raidz_aarch64_neon_impl,
&vdev_raidz_aarch64_neonx2_impl,
#endif
#if defined(__powerpc__)
&vdev_raidz_powerpc_altivec_impl,
#endif
};
/* Indicate that benchmark has been completed */

4337
module/zfs/vdev_raidz_math_powerpc_altivec.c Normal file
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File diff suppressed because it is too large Load Diff

688
module/zfs/vdev_raidz_math_powerpc_altivec_common.h Normal file
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@ -0,0 +1,688 @@
/*
* 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) 2019 Romain Dolbeau. All rights reserved.
* <romain.dolbeau@european-processor-initiative.eu>
*/
#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, ...) "%[w"#REG"]"
#define VR1_(_1, REG, ...) "%[w"#REG"]"
#define VR2_(_1, _2, REG, ...) "%[w"#REG"]"
#define VR3_(_1, _2, _3, REG, ...) "%[w"#REG"]"
#define VR4_(_1, _2, _3, _4, REG, ...) "%[w"#REG"]"
#define VR5_(_1, _2, _3, _4, _5, REG, ...) "%[w"#REG"]"
#define VR6_(_1, _2, _3, _4, _5, _6, REG, ...) "%[w"#REG"]"
#define VR7_(_1, _2, _3, _4, _5, _6, _7, REG, ...) "%[w"#REG"]"
/*
* Here we need registers not used otherwise.
* They will be used in unused ASM for the case
* with more registers than required... but GCC
* will still need to make sure the constraints
* are correct, and duplicate constraints are illegal
* ... and we use the "register" number as a name
*/
#define VR0(r...) VR0_(r)
#define VR1(r...) VR1_(r)
#define VR2(r...) VR2_(r, 36)
#define VR3(r...) VR3_(r, 36, 35)
#define VR4(r...) VR4_(r, 36, 35, 34, 33)
#define VR5(r...) VR5_(r, 36, 35, 34, 33, 32)
#define VR6(r...) VR6_(r, 36, 35, 34, 33, 32, 31)
#define VR7(r...) VR7_(r, 36, 35, 34, 33, 32, 31, 30)
#define VR(X) "%[w"#X"]"
#define RVR0_(REG, ...) [w##REG] "v" (w##REG)
#define RVR1_(_1, REG, ...) [w##REG] "v" (w##REG)
#define RVR2_(_1, _2, REG, ...) [w##REG] "v" (w##REG)
#define RVR3_(_1, _2, _3, REG, ...) [w##REG] "v" (w##REG)
#define RVR4_(_1, _2, _3, _4, REG, ...) [w##REG] "v" (w##REG)
#define RVR5_(_1, _2, _3, _4, _5, REG, ...) [w##REG] "v" (w##REG)
#define RVR6_(_1, _2, _3, _4, _5, _6, REG, ...) [w##REG] "v" (w##REG)
#define RVR7_(_1, _2, _3, _4, _5, _6, _7, REG, ...) [w##REG] "v" (w##REG)
#define RVR0(r...) RVR0_(r)
#define RVR1(r...) RVR1_(r)
#define RVR2(r...) RVR2_(r, 36)
#define RVR3(r...) RVR3_(r, 36, 35)
#define RVR4(r...) RVR4_(r, 36, 35, 34, 33)
#define RVR5(r...) RVR5_(r, 36, 35, 34, 33, 32)
#define RVR6(r...) RVR6_(r, 36, 35, 34, 33, 32, 31)
#define RVR7(r...) RVR7_(r, 36, 35, 34, 33, 32, 31, 30)
#define RVR(X) [w##X] "v" (w##X)
#define WVR0_(REG, ...) [w##REG] "=v" (w##REG)
#define WVR1_(_1, REG, ...) [w##REG] "=v" (w##REG)
#define WVR2_(_1, _2, REG, ...) [w##REG] "=v" (w##REG)
#define WVR3_(_1, _2, _3, REG, ...) [w##REG] "=v" (w##REG)
#define WVR4_(_1, _2, _3, _4, REG, ...) [w##REG] "=v" (w##REG)
#define WVR5_(_1, _2, _3, _4, _5, REG, ...) [w##REG] "=v" (w##REG)
#define WVR6_(_1, _2, _3, _4, _5, _6, REG, ...) [w##REG] "=v" (w##REG)
#define WVR7_(_1, _2, _3, _4, _5, _6, _7, REG, ...) [w##REG] "=v" (w##REG)
#define WVR0(r...) WVR0_(r)
#define WVR1(r...) WVR1_(r)
#define WVR2(r...) WVR2_(r, 36)
#define WVR3(r...) WVR3_(r, 36, 35)
#define WVR4(r...) WVR4_(r, 36, 35, 34, 33)
#define WVR5(r...) WVR5_(r, 36, 35, 34, 33, 32)
#define WVR6(r...) WVR6_(r, 36, 35, 34, 33, 32, 31)
#define WVR7(r...) WVR7_(r, 36, 35, 34, 33, 32, 31, 30)
#define WVR(X) [w##X] "=v" (w##X)
#define UVR0_(REG, ...) [w##REG] "+&v" (w##REG)
#define UVR1_(_1, REG, ...) [w##REG] "+&v" (w##REG)
#define UVR2_(_1, _2, REG, ...) [w##REG] "+&v" (w##REG)
#define UVR3_(_1, _2, _3, REG, ...) [w##REG] "+&v" (w##REG)
#define UVR4_(_1, _2, _3, _4, REG, ...) [w##REG] "+&v" (w##REG)
#define UVR5_(_1, _2, _3, _4, _5, REG, ...) [w##REG] "+&v" (w##REG)
#define UVR6_(_1, _2, _3, _4, _5, _6, REG, ...) [w##REG] "+&v" (w##REG)
#define UVR7_(_1, _2, _3, _4, _5, _6, _7, REG, ...) [w##REG] "+&v" (w##REG)
#define UVR0(r...) UVR0_(r)
#define UVR1(r...) UVR1_(r)
#define UVR2(r...) UVR2_(r, 36)
#define UVR3(r...) UVR3_(r, 36, 35)
#define UVR4(r...) UVR4_(r, 36, 35, 34, 33)
#define UVR5(r...) UVR5_(r, 36, 35, 34, 33, 32)
#define UVR6(r...) UVR6_(r, 36, 35, 34, 33, 32, 31)
#define UVR7(r...) UVR7_(r, 36, 35, 34, 33, 32, 31, 30)
#define UVR(X) [w##X] "+&v" (w##X)
#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)
#define OFFSET(ptr, val) (((unsigned char *)(ptr))+val)
extern const uint8_t gf_clmul_mod_lt[4*256][16];
#define ELEM_SIZE 16
typedef struct v {
uint8_t b[ELEM_SIZE] __attribute__((aligned(ELEM_SIZE)));
} v_t;
#define XOR_ACC(src, r...) \
{ \
switch (REG_CNT(r)) { \
case 8: \
__asm( \
"lvx 21,0,%[SRC0]\n" \
"lvx 20,0,%[SRC1]\n" \
"lvx 19,0,%[SRC2]\n" \
"lvx 18,0,%[SRC3]\n" \
"vxor " VR0(r) "," VR0(r) ",21\n" \
"vxor " VR1(r) "," VR1(r) ",20\n" \
"vxor " VR2(r) "," VR2(r) ",19\n" \
"vxor " VR3(r) "," VR3(r) ",18\n" \
"lvx 21,0,%[SRC4]\n" \
"lvx 20,0,%[SRC5]\n" \
"lvx 19,0,%[SRC6]\n" \
"lvx 18,0,%[SRC7]\n" \
"vxor " VR4(r) "," VR4(r) ",21\n" \
"vxor " VR5(r) "," VR5(r) ",20\n" \
"vxor " VR6(r) "," VR6(r) ",19\n" \
"vxor " VR7(r) "," VR7(r) ",18\n" \
: UVR0(r), UVR1(r), UVR2(r), UVR3(r), \
UVR4(r), UVR5(r), UVR6(r), UVR7(r) \
: [SRC0] "r" ((OFFSET(src, 0))), \
[SRC1] "r" ((OFFSET(src, 16))), \
[SRC2] "r" ((OFFSET(src, 32))), \
[SRC3] "r" ((OFFSET(src, 48))), \
[SRC4] "r" ((OFFSET(src, 64))), \
[SRC5] "r" ((OFFSET(src, 80))), \
[SRC6] "r" ((OFFSET(src, 96))), \
[SRC7] "r" ((OFFSET(src, 112))) \
: "v18", "v19", "v20", "v21"); \
break; \
case 4: \
__asm( \
"lvx 21,0,%[SRC0]\n" \
"lvx 20,0,%[SRC1]\n" \
"lvx 19,0,%[SRC2]\n" \
"lvx 18,0,%[SRC3]\n" \
"vxor " VR0(r) "," VR0(r) ",21\n" \
"vxor " VR1(r) "," VR1(r) ",20\n" \
"vxor " VR2(r) "," VR2(r) ",19\n" \
"vxor " VR3(r) "," VR3(r) ",18\n" \
: UVR0(r), UVR1(r), UVR2(r), UVR3(r) \
: [SRC0] "r" ((OFFSET(src, 0))), \
[SRC1] "r" ((OFFSET(src, 16))), \
[SRC2] "r" ((OFFSET(src, 32))), \
[SRC3] "r" ((OFFSET(src, 48))) \
: "v18", "v19", "v20", "v21"); \
break; \
case 2: \
__asm( \
"lvx 21,0,%[SRC0]\n" \
"lvx 20,0,%[SRC1]\n" \
"vxor " VR0(r) "," VR0(r) ",21\n" \
"vxor " VR1(r) "," VR1(r) ",20\n" \
: UVR0(r), UVR1(r) \
: [SRC0] "r" ((OFFSET(src, 0))), \
[SRC1] "r" ((OFFSET(src, 16))) \
: "v20", "v21"); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define XOR(r...) \
{ \
switch (REG_CNT(r)) { \
case 8: \
__asm( \
"vxor " VR4(r) "," VR4(r) "," VR0(r) "\n" \
"vxor " VR5(r) "," VR5(r) "," VR1(r) "\n" \
"vxor " VR6(r) "," VR6(r) "," VR2(r) "\n" \
"vxor " VR7(r) "," VR7(r) "," VR3(r) "\n" \
: UVR4(r), UVR5(r), UVR6(r), UVR7(r) \
: RVR0(r), RVR1(r), RVR2(r), RVR3(r)); \
break; \
case 4: \
__asm( \
"vxor " VR2(r) "," VR2(r) "," VR0(r) "\n" \
"vxor " VR3(r) "," VR3(r) "," VR1(r) "\n" \
: UVR2(r), UVR3(r) \
: RVR0(r), RVR1(r)); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define ZERO(r...) \
{ \
switch (REG_CNT(r)) { \
case 8: \
__asm( \
"vxor " VR0(r) "," VR0(r) "," VR0(r) "\n" \
"vxor " VR1(r) "," VR1(r) "," VR1(r) "\n" \
"vxor " VR2(r) "," VR2(r) "," VR2(r) "\n" \
"vxor " VR3(r) "," VR3(r) "," VR3(r) "\n" \
"vxor " VR4(r) "," VR4(r) "," VR4(r) "\n" \
"vxor " VR5(r) "," VR5(r) "," VR5(r) "\n" \
"vxor " VR6(r) "," VR6(r) "," VR6(r) "\n" \
"vxor " VR7(r) "," VR7(r) "," VR7(r) "\n" \
: WVR0(r), WVR1(r), WVR2(r), WVR3(r), \
WVR4(r), WVR5(r), WVR6(r), WVR7(r)); \
break; \
case 4: \
__asm( \
"vxor " VR0(r) "," VR0(r) "," VR0(r) "\n" \
"vxor " VR1(r) "," VR1(r) "," VR1(r) "\n" \
"vxor " VR2(r) "," VR2(r) "," VR2(r) "\n" \
"vxor " VR3(r) "," VR3(r) "," VR3(r) "\n" \
: WVR0(r), WVR1(r), WVR2(r), WVR3(r)); \
break; \
case 2: \
__asm( \
"vxor " VR0(r) "," VR0(r) "," VR0(r) "\n" \
"vxor " VR1(r) "," VR1(r) "," VR1(r) "\n" \
: WVR0(r), WVR1(r)); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define COPY(r...) \
{ \
switch (REG_CNT(r)) { \
case 8: \
__asm( \
"vor " VR4(r) "," VR0(r) "," VR0(r) "\n" \
"vor " VR5(r) "," VR1(r) "," VR1(r) "\n" \
"vor " VR6(r) "," VR2(r) "," VR2(r) "\n" \
"vor " VR7(r) "," VR3(r) "," VR3(r) "\n" \
: WVR4(r), WVR5(r), WVR6(r), WVR7(r) \
: RVR0(r), RVR1(r), RVR2(r), RVR3(r)); \
break; \
case 4: \
__asm( \
"vor " VR2(r) "," VR0(r) "," VR0(r) "\n" \
"vor " VR3(r) "," VR1(r) "," VR1(r) "\n" \
: WVR2(r), WVR3(r) \
: RVR0(r), RVR1(r)); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define LOAD(src, r...) \
{ \
switch (REG_CNT(r)) { \
case 8: \
__asm( \
"lvx " VR0(r) " ,0,%[SRC0]\n" \
"lvx " VR1(r) " ,0,%[SRC1]\n" \
"lvx " VR2(r) " ,0,%[SRC2]\n" \
"lvx " VR3(r) " ,0,%[SRC3]\n" \
"lvx " VR4(r) " ,0,%[SRC4]\n" \
"lvx " VR5(r) " ,0,%[SRC5]\n" \
"lvx " VR6(r) " ,0,%[SRC6]\n" \
"lvx " VR7(r) " ,0,%[SRC7]\n" \
: WVR0(r), WVR1(r), WVR2(r), WVR3(r), \
WVR4(r), WVR5(r), WVR6(r), WVR7(r) \
: [SRC0] "r" ((OFFSET(src, 0))), \
[SRC1] "r" ((OFFSET(src, 16))), \
[SRC2] "r" ((OFFSET(src, 32))), \
[SRC3] "r" ((OFFSET(src, 48))), \
[SRC4] "r" ((OFFSET(src, 64))), \
[SRC5] "r" ((OFFSET(src, 80))), \
[SRC6] "r" ((OFFSET(src, 96))), \
[SRC7] "r" ((OFFSET(src, 112)))); \
break; \
case 4: \
__asm( \
"lvx " VR0(r) " ,0,%[SRC0]\n" \
"lvx " VR1(r) " ,0,%[SRC1]\n" \
"lvx " VR2(r) " ,0,%[SRC2]\n" \
"lvx " VR3(r) " ,0,%[SRC3]\n" \
: WVR0(r), WVR1(r), WVR2(r), WVR3(r) \
: [SRC0] "r" ((OFFSET(src, 0))), \
[SRC1] "r" ((OFFSET(src, 16))), \
[SRC2] "r" ((OFFSET(src, 32))), \
[SRC3] "r" ((OFFSET(src, 48)))); \
break; \
case 2: \
__asm( \
"lvx " VR0(r) " ,0,%[SRC0]\n" \
"lvx " VR1(r) " ,0,%[SRC1]\n" \
: WVR0(r), WVR1(r) \
: [SRC0] "r" ((OFFSET(src, 0))), \
[SRC1] "r" ((OFFSET(src, 16)))); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define STORE(dst, r...) \
{ \
switch (REG_CNT(r)) { \
case 8: \
__asm( \
"stvx " VR0(r) " ,0,%[DST0]\n" \
"stvx " VR1(r) " ,0,%[DST1]\n" \
"stvx " VR2(r) " ,0,%[DST2]\n" \
"stvx " VR3(r) " ,0,%[DST3]\n" \
"stvx " VR4(r) " ,0,%[DST4]\n" \
"stvx " VR5(r) " ,0,%[DST5]\n" \
"stvx " VR6(r) " ,0,%[DST6]\n" \
"stvx " VR7(r) " ,0,%[DST7]\n" \
: : [DST0] "r" ((OFFSET(dst, 0))), \
[DST1] "r" ((OFFSET(dst, 16))), \
[DST2] "r" ((OFFSET(dst, 32))), \
[DST3] "r" ((OFFSET(dst, 48))), \
[DST4] "r" ((OFFSET(dst, 64))), \
[DST5] "r" ((OFFSET(dst, 80))), \
[DST6] "r" ((OFFSET(dst, 96))), \
[DST7] "r" ((OFFSET(dst, 112))), \
RVR0(r), RVR1(r), RVR2(r), RVR3(r), \
RVR4(r), RVR5(r), RVR6(r), RVR7(r) \
: "memory"); \
break; \
case 4: \
__asm( \
"stvx " VR0(r) " ,0,%[DST0]\n" \
"stvx " VR1(r) " ,0,%[DST1]\n" \
"stvx " VR2(r) " ,0,%[DST2]\n" \
"stvx " VR3(r) " ,0,%[DST3]\n" \
: : [DST0] "r" ((OFFSET(dst, 0))), \
[DST1] "r" ((OFFSET(dst, 16))), \
[DST2] "r" ((OFFSET(dst, 32))), \
[DST3] "r" ((OFFSET(dst, 48))), \
RVR0(r), RVR1(r), RVR2(r), RVR3(r) \
: "memory"); \
break; \
case 2: \
__asm( \
"stvx " VR0(r) " ,0,%[DST0]\n" \
"stvx " VR1(r) " ,0,%[DST1]\n" \
: : [DST0] "r" ((OFFSET(dst, 0))), \
[DST1] "r" ((OFFSET(dst, 16))), \
RVR0(r), RVR1(r) : "memory"); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
/*
* Unfortunately cannot use the macro, because GCC
* will try to use the macro name and not value
* later on...
* Kept as a reference to what a numbered variable is
*/
#define _00 "17"
#define _1d "16"
#define _temp0 "19"
#define _temp1 "18"
#define MUL2_SETUP() \
{ \
__asm( \
"vspltisb " VR(16) ",14\n" \
"vspltisb " VR(17) ",15\n" \
"vaddubm " VR(16) "," VR(17) "," VR(16) "\n" \
"vxor " VR(17) "," VR(17) "," VR(17) "\n" \
: WVR(16), WVR(17)); \
}
#define MUL2(r...) \
{ \
switch (REG_CNT(r)) { \
case 4: \
__asm( \
"vcmpgtsb 19," VR(17) "," VR0(r) "\n" \
"vcmpgtsb 18," VR(17) "," VR1(r) "\n" \
"vcmpgtsb 21," VR(17) "," VR2(r) "\n" \
"vcmpgtsb 20," VR(17) "," VR3(r) "\n" \
"vand 19,19," VR(16) "\n" \
"vand 18,18," VR(16) "\n" \
"vand 21,21," VR(16) "\n" \
"vand 20,20," VR(16) "\n" \
"vaddubm " VR0(r) "," VR0(r) "," VR0(r) "\n" \
"vaddubm " VR1(r) "," VR1(r) "," VR1(r) "\n" \
"vaddubm " VR2(r) "," VR2(r) "," VR2(r) "\n" \
"vaddubm " VR3(r) "," VR3(r) "," VR3(r) "\n" \
"vxor " VR0(r) ",19," VR0(r) "\n" \
"vxor " VR1(r) ",18," VR1(r) "\n" \
"vxor " VR2(r) ",21," VR2(r) "\n" \
"vxor " VR3(r) ",20," VR3(r) "\n" \
: UVR0(r), UVR1(r), UVR2(r), UVR3(r) \
: RVR(17), RVR(16) \
: "v18", "v19", "v20", "v21"); \
break; \
case 2: \
__asm( \
"vcmpgtsb 19," VR(17) "," VR0(r) "\n" \
"vcmpgtsb 18," VR(17) "," VR1(r) "\n" \
"vand 19,19," VR(16) "\n" \
"vand 18,18," VR(16) "\n" \
"vaddubm " VR0(r) "," VR0(r) "," VR0(r) "\n" \
"vaddubm " VR1(r) "," VR1(r) "," VR1(r) "\n" \
"vxor " VR0(r) ",19," VR0(r) "\n" \
"vxor " VR1(r) ",18," VR1(r) "\n" \
: UVR0(r), UVR1(r) \
: RVR(17), RVR(16) \
: "v18", "v19"); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define MUL4(r...) \
{ \
MUL2(r); \
MUL2(r); \
}
/*
* Unfortunately cannot use the macro, because GCC
* will try to use the macro name and not value
* later on...
* Kept as a reference to what a register is
* (here we're using actual registers for the
* clobbered ones)
*/
#define _0f "15"
#define _a_save "14"
#define _b_save "13"
#define _lt_mod_a "12"
#define _lt_clmul_a "11"
#define _lt_mod_b "10"
#define _lt_clmul_b "15"
#define _MULx2(c, r...) \
{ \
switch (REG_CNT(r)) { \
case 2: \
__asm( \
/* lts for upper part */ \
"vspltisb 15,15\n" \
"lvx 10,0,%[lt0]\n" \
"lvx 11,0,%[lt1]\n" \
/* upper part */ \
"vand 14," VR0(r) ",15\n" \
"vand 13," VR1(r) ",15\n" \
"vspltisb 15,4\n" \
"vsrab " VR0(r) "," VR0(r) ",15\n" \
"vsrab " VR1(r) "," VR1(r) ",15\n" \
\
"vperm 12,10,10," VR0(r) "\n" \
"vperm 10,10,10," VR1(r) "\n" \
"vperm 15,11,11," VR0(r) "\n" \
"vperm 11,11,11," VR1(r) "\n" \
\
"vxor " VR0(r) ",15,12\n" \
"vxor " VR1(r) ",11,10\n" \
/* lts for lower part */ \
"lvx 10,0,%[lt2]\n" \
"lvx 15,0,%[lt3]\n" \
/* lower part */ \
"vperm 12,10,10,14\n" \
"vperm 10,10,10,13\n" \
"vperm 11,15,15,14\n" \
"vperm 15,15,15,13\n" \
\
"vxor " VR0(r) "," VR0(r) ",12\n" \
"vxor " VR1(r) "," VR1(r) ",10\n" \
"vxor " VR0(r) "," VR0(r) ",11\n" \
"vxor " VR1(r) "," VR1(r) ",15\n" \
: UVR0(r), UVR1(r) \
: [lt0] "r" (&(gf_clmul_mod_lt[4*(c)+0][0])), \
[lt1] "r" (&(gf_clmul_mod_lt[4*(c)+1][0])), \
[lt2] "r" (&(gf_clmul_mod_lt[4*(c)+2][0])), \
[lt3] "r" (&(gf_clmul_mod_lt[4*(c)+3][0])) \
: "v10", "v11", "v12", "v13", "v14", "v15"); \
break; \
default: \
ZFS_ASM_BUG(); \
} \
}
#define MUL(c, r...) \
{ \
switch (REG_CNT(r)) { \
case 4: \
_MULx2(c, R_23(r)); \
_MULx2(c, R_01(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()
/* Overkill... */
#if 0 // defined(_KERNEL)
#define GEN_X_DEFINE_0_3() \
register unsigned char w0 asm("0") __attribute__((vector_size(16))); \
register unsigned char w1 asm("1") __attribute__((vector_size(16))); \
register unsigned char w2 asm("2") __attribute__((vector_size(16))); \
register unsigned char w3 asm("3") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_4_5() \
register unsigned char w4 asm("4") __attribute__((vector_size(16))); \
register unsigned char w5 asm("5") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_6_7() \
register unsigned char w6 asm("6") __attribute__((vector_size(16))); \
register unsigned char w7 asm("7") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_8_9() \
register unsigned char w8 asm("8") __attribute__((vector_size(16))); \
register unsigned char w9 asm("9") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_10_11() \
register unsigned char w10 asm("10") __attribute__((vector_size(16))); \
register unsigned char w11 asm("11") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_12_15() \
register unsigned char w12 asm("12") __attribute__((vector_size(16))); \
register unsigned char w13 asm("13") __attribute__((vector_size(16))); \
register unsigned char w14 asm("14") __attribute__((vector_size(16))); \
register unsigned char w15 asm("15") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_16() \
register unsigned char w16 asm("16") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_17() \
register unsigned char w17 asm("17") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_18_21() \
register unsigned char w18 asm("18") __attribute__((vector_size(16))); \
register unsigned char w19 asm("19") __attribute__((vector_size(16))); \
register unsigned char w20 asm("20") __attribute__((vector_size(16))); \
register unsigned char w21 asm("21") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_22_23() \
register unsigned char w22 asm("22") __attribute__((vector_size(16))); \
register unsigned char w23 asm("23") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_24_27() \
register unsigned char w24 asm("24") __attribute__((vector_size(16))); \
register unsigned char w25 asm("25") __attribute__((vector_size(16))); \
register unsigned char w26 asm("26") __attribute__((vector_size(16))); \
register unsigned char w27 asm("27") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_28_30() \
register unsigned char w28 asm("28") __attribute__((vector_size(16))); \
register unsigned char w29 asm("29") __attribute__((vector_size(16))); \
register unsigned char w30 asm("30") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_31() \
register unsigned char w31 asm("31") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_32() \
register unsigned char w32 asm("31") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_33_36() \
register unsigned char w33 asm("31") __attribute__((vector_size(16))); \
register unsigned char w34 asm("31") __attribute__((vector_size(16))); \
register unsigned char w35 asm("31") __attribute__((vector_size(16))); \
register unsigned char w36 asm("31") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_37_38() \
register unsigned char w37 asm("31") __attribute__((vector_size(16))); \
register unsigned char w38 asm("31") __attribute__((vector_size(16)));
#define GEN_X_DEFINE_ALL() \
GEN_X_DEFINE_0_3() \
GEN_X_DEFINE_4_5() \
GEN_X_DEFINE_6_7() \
GEN_X_DEFINE_8_9() \
GEN_X_DEFINE_10_11() \
GEN_X_DEFINE_12_15() \
GEN_X_DEFINE_16() \
GEN_X_DEFINE_17() \
GEN_X_DEFINE_18_21() \
GEN_X_DEFINE_22_23() \
GEN_X_DEFINE_24_27() \
GEN_X_DEFINE_28_30() \
GEN_X_DEFINE_31() \
GEN_X_DEFINE_32() \
GEN_X_DEFINE_33_36() \
GEN_X_DEFINE_37_38()
#else
#define GEN_X_DEFINE_0_3() \
unsigned char w0 __attribute__((vector_size(16))); \
unsigned char w1 __attribute__((vector_size(16))); \
unsigned char w2 __attribute__((vector_size(16))); \
unsigned char w3 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_4_5() \
unsigned char w4 __attribute__((vector_size(16))); \
unsigned char w5 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_6_7() \
unsigned char w6 __attribute__((vector_size(16))); \
unsigned char w7 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_8_9() \
unsigned char w8 __attribute__((vector_size(16))); \
unsigned char w9 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_10_11() \
unsigned char w10 __attribute__((vector_size(16))); \
unsigned char w11 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_12_15() \
unsigned char w12 __attribute__((vector_size(16))); \
unsigned char w13 __attribute__((vector_size(16))); \
unsigned char w14 __attribute__((vector_size(16))); \
unsigned char w15 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_16() \
unsigned char w16 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_17() \
unsigned char w17 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_18_21() \
unsigned char w18 __attribute__((vector_size(16))); \
unsigned char w19 __attribute__((vector_size(16))); \
unsigned char w20 __attribute__((vector_size(16))); \
unsigned char w21 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_22_23() \
unsigned char w22 __attribute__((vector_size(16))); \
unsigned char w23 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_24_27() \
unsigned char w24 __attribute__((vector_size(16))); \
unsigned char w25 __attribute__((vector_size(16))); \
unsigned char w26 __attribute__((vector_size(16))); \
unsigned char w27 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_28_30() \
unsigned char w28 __attribute__((vector_size(16))); \
unsigned char w29 __attribute__((vector_size(16))); \
unsigned char w30 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_31() \
unsigned char w31 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_32() \
unsigned char w32 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_33_36() \
unsigned char w33 __attribute__((vector_size(16))); \
unsigned char w34 __attribute__((vector_size(16))); \
unsigned char w35 __attribute__((vector_size(16))); \
unsigned char w36 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_37_38() \
unsigned char w37 __attribute__((vector_size(16))); \
unsigned char w38 __attribute__((vector_size(16)));
#define GEN_X_DEFINE_ALL() \
GEN_X_DEFINE_0_3() \
GEN_X_DEFINE_4_5() \
GEN_X_DEFINE_6_7() \
GEN_X_DEFINE_8_9() \
GEN_X_DEFINE_10_11() \
GEN_X_DEFINE_12_15() \
GEN_X_DEFINE_16() \
GEN_X_DEFINE_17() \
GEN_X_DEFINE_18_21() \
GEN_X_DEFINE_22_23() \
GEN_X_DEFINE_24_27() \
GEN_X_DEFINE_28_30() \
GEN_X_DEFINE_31() \
GEN_X_DEFINE_32() \
GEN_X_DEFINE_33_36() \
GEN_X_DEFINE_37_38()
#endif