91 lines
2.2 KiB
C
91 lines
2.2 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 https://opensource.org/licenses/CDDL-1.0.
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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) 2022 Tino Reichardt <milky-zfs@mcmilk.de>
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*/
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/*
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* USER API:
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*
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* Kernel fpu methods:
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* kfpu_allowed()
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* kfpu_begin()
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* kfpu_end()
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* kfpu_init()
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* kfpu_fini()
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*
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* SIMD support:
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*
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* Following functions should be called to determine whether CPU feature
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* is supported. All functions are usable in kernel and user space.
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* If a SIMD algorithm is using more than one instruction set
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* all relevant feature test functions should be called.
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*
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* Supported features:
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* zfs_altivec_available()
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* zfs_vsx_available()
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* zfs_isa207_available()
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*/
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#ifndef _FREEBSD_SIMD_POWERPC_H
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#define _FREEBSD_SIMD_POWERPC_H
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#include <sys/types.h>
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#include <sys/cdefs.h>
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#include <machine/pcb.h>
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#include <powerpc/cpu.h>
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#define kfpu_allowed() 1
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#define kfpu_initialize(tsk) do {} while (0)
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#define kfpu_begin() do {} while (0)
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#define kfpu_end() do {} while (0)
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#define kfpu_init() (0)
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#define kfpu_fini() do {} while (0)
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/*
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* Check if Altivec is available
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*/
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static inline boolean_t
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zfs_altivec_available(void)
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{
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return ((cpu_features & PPC_FEATURE_HAS_ALTIVEC) != 0);
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}
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/*
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* Check if VSX is available
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*/
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static inline boolean_t
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zfs_vsx_available(void)
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{
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return ((cpu_features & PPC_FEATURE_HAS_VSX) != 0);
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}
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/*
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* Check if POWER ISA 2.07 is available (SHA2)
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*/
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static inline boolean_t
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zfs_isa207_available(void)
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{
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return ((cpu_features2 & PPC_FEATURE2_ARCH_2_07) != 0);
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}
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