diff options
Diffstat (limited to 'include/os/freebsd/spl/sys/simd_powerpc.h')
-rw-r--r-- | include/os/freebsd/spl/sys/simd_powerpc.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/include/os/freebsd/spl/sys/simd_powerpc.h b/include/os/freebsd/spl/sys/simd_powerpc.h new file mode 100644 index 000000000000..cf3c712c6af2 --- /dev/null +++ b/include/os/freebsd/spl/sys/simd_powerpc.h @@ -0,0 +1,86 @@ +/* + * Copyright (C) 2022 Tino Reichardt <milky-zfs@mcmilk.de> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +/* + * 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() + * zfs_vsx_available() + * zfs_isa207_available() + */ + +#ifndef _FREEBSD_SIMD_POWERPC_H +#define _FREEBSD_SIMD_POWERPC_H + +#include <sys/types.h> +#include <sys/cdefs.h> + +#include <machine/pcb.h> +#include <machine/cpu.h> + +#define kfpu_allowed() 0 +#define kfpu_initialize(tsk) do {} while (0) +#define kfpu_begin() do {} while (0) +#define kfpu_end() do {} while (0) +#define kfpu_init() (0) +#define kfpu_fini() do {} while (0) + +/* + * Check if Altivec is available + */ +static inline boolean_t +zfs_altivec_available(void) +{ + return ((cpu_features & PPC_FEATURE_HAS_ALTIVEC) != 0); +} + +/* + * Check if VSX is available + */ +static inline boolean_t +zfs_vsx_available(void) +{ + return ((cpu_features & PPC_FEATURE_HAS_VSX) != 0); +} + +/* + * Check if POWER ISA 2.07 is available (SHA2) + */ +static inline boolean_t +zfs_isa207_available(void) +{ + return ((cpu_features2 & PPC_FEATURE2_ARCH_2_07) != 0); +} + +#endif |