arch/riscv/include/asm/cpufeature.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright 2022-2023 Rivos, Inc
 */

#ifndef _ASM_CPUFEATURE_H
#define _ASM_CPUFEATURE_H

#include <linux/bitmap.h>
#include <asm/hwcap.h>

/*
 * These are probed via a device_initcall(), via either the SBI or directly
 * from the corresponding CSRs.
 */
struct riscv_cpuinfo {
	unsigned long mvendorid;
	unsigned long marchid;
	unsigned long mimpid;
};

struct riscv_isainfo {
	DECLARE_BITMAP(isa, RISCV_ISA_EXT_MAX);
};

DECLARE_PER_CPU(struct riscv_cpuinfo, riscv_cpuinfo);

DECLARE_PER_CPU(long, misaligned_access_speed);

/* Per-cpu ISA extensions. */
extern struct riscv_isainfo hart_isa[NR_CPUS];

void check_unaligned_access(int cpu);
void riscv_user_isa_enable(void);

#endif