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/*
* Copyright (C) 2023 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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 COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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.
*/
#pragma once
#if __riscv
/**
* @file sys/hwprobe.h
* @brief RISC-V hardware probing.
*/
#include <sys/cdefs.h>
#include <sys/types.h>
/* Pull in struct riscv_hwprobe and corresponding constants. */
#include <asm/hwprobe.h>
__BEGIN_DECLS
/**
* [__riscv_hwprobe(2)](https://docs.kernel.org/riscv/hwprobe.html)
* queries hardware characteristics.
*
* A `__cpu_count` of 0 and null `__cpus` means "all online cpus".
*
* Returns 0 on success and returns an error number on failure.
*/
int __riscv_hwprobe(struct riscv_hwprobe* _Nonnull __pairs, size_t __pair_count, size_t __cpu_count, unsigned long* _Nullable __cpus, unsigned __flags);
/**
* The type of the second argument passed to riscv64 ifunc resolvers.
* This argument allows riscv64 ifunc resolvers to call __riscv_hwprobe()
* without worrying about whether that relocation is resolved before
* the ifunc resolver is called.
*/
typedef int (*__riscv_hwprobe_t)(struct riscv_hwprobe* _Nonnull __pairs, size_t __pair_count, size_t __cpu_count, unsigned long* _Nullable __cpus, unsigned __flags);
__END_DECLS
#endif
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