Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
35 lines
521 B
C
35 lines
521 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2024 ARM Limited
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*
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* Common helper functions for SVE and SME functionality.
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*/
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#ifndef __SVE_HELPERS_H__
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#define __SVE_HELPERS_H__
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#include <stdbool.h>
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#define VLS_USE_SVE false
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#define VLS_USE_SME true
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extern unsigned int vls[];
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extern unsigned int nvls;
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int sve_fill_vls(bool use_sme, int min_vls);
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static inline uint64_t get_svcr(void)
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{
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uint64_t val;
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asm volatile (
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"mrs %0, S3_3_C4_C2_2\n"
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: "=r"(val)
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:
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: "cc");
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return val;
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}
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#endif
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