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/* RISC-V architecture probe interface
Copyright (C) 2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<https://www.gnu.org/licenses/>. */
#ifndef _SYS_HWPROBE_H
#define _SYS_HWPROBE_H 1
#include <features.h>
#include <stddef.h>
#ifdef __has_include
# if __has_include (<asm/hwprobe.h>)
# include <asm/hwprobe.h>
# endif
#endif
/* Define a (probably stale) version of the interface if the Linux headers
aren't present. */
#ifndef RISCV_HWPROBE_KEY_MVENDORID
struct riscv_hwprobe {
signed long long int key;
unsigned long long int value;
};
#define RISCV_HWPROBE_KEY_MVENDORID 0
#define RISCV_HWPROBE_KEY_MARCHID 1
#define RISCV_HWPROBE_KEY_MIMPID 2
#define RISCV_HWPROBE_KEY_BASE_BEHAVIOR 3
#define RISCV_HWPROBE_BASE_BEHAVIOR_IMA (1 << 0)
#define RISCV_HWPROBE_KEY_IMA_EXT_0 4
#define RISCV_HWPROBE_IMA_FD (1 << 0)
#define RISCV_HWPROBE_IMA_C (1 << 1)
#define RISCV_HWPROBE_IMA_V (1 << 2)
#define RISCV_HWPROBE_EXT_ZBA (1 << 3)
#define RISCV_HWPROBE_EXT_ZBB (1 << 4)
#define RISCV_HWPROBE_EXT_ZBS (1 << 5)
#define RISCV_HWPROBE_EXT_ZICBOZ (1 << 6)
#define RISCV_HWPROBE_KEY_CPUPERF_0 5
#define RISCV_HWPROBE_MISALIGNED_UNKNOWN (0 << 0)
#define RISCV_HWPROBE_MISALIGNED_EMULATED (1 << 0)
#define RISCV_HWPROBE_MISALIGNED_SLOW (2 << 0)
#define RISCV_HWPROBE_MISALIGNED_FAST (3 << 0)
#define RISCV_HWPROBE_MISALIGNED_UNSUPPORTED (4 << 0)
#define RISCV_HWPROBE_MISALIGNED_MASK (7 << 0)
#define RISCV_HWPROBE_KEY_ZICBOZ_BLOCK_SIZE 6
#endif /* RISCV_HWPROBE_KEY_MVENDORID */
__BEGIN_DECLS
extern int __riscv_hwprobe (struct riscv_hwprobe *__pairs, size_t __pair_count,
size_t __cpu_count, unsigned long int *__cpus,
unsigned int __flags)
__nonnull ((1)) __wur
__fortified_attr_access (__read_write__, 1, 2)
__fortified_attr_access (__read_only__, 4, 3);
__END_DECLS
#endif /* sys/hwprobe.h */
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