xref: /linux/arch/riscv/include/uapi/asm/hwprobe.h (revision 5b179fe052334ea81c9f1841bf782bb0878b61d2)

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * Copyright 2023 Rivos, Inc
 */

#ifndef _UAPI_ASM_HWPROBE_H
#define _UAPI_ASM_HWPROBE_H

#include <linux/types.h>

/*
 * Interface for probing hardware capabilities from userspace, see
 * Documentation/arch/riscv/hwprobe.rst for more information.
 */
struct riscv_hwprobe {
	__s64 key;
	__u64 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_EXT_ZBC		(1 << 7)
#define		RISCV_HWPROBE_EXT_ZBKB		(1 << 8)
#define		RISCV_HWPROBE_EXT_ZBKC		(1 << 9)
#define		RISCV_HWPROBE_EXT_ZBKX		(1 << 10)
#define		RISCV_HWPROBE_EXT_ZKND		(1 << 11)
#define		RISCV_HWPROBE_EXT_ZKNE		(1 << 12)
#define		RISCV_HWPROBE_EXT_ZKNH		(1 << 13)
#define		RISCV_HWPROBE_EXT_ZKSED		(1 << 14)
#define		RISCV_HWPROBE_EXT_ZKSH		(1 << 15)
#define		RISCV_HWPROBE_EXT_ZKT		(1 << 16)
#define		RISCV_HWPROBE_EXT_ZVBB		(1 << 17)
#define		RISCV_HWPROBE_EXT_ZVBC		(1 << 18)
#define		RISCV_HWPROBE_EXT_ZVKB		(1 << 19)
#define		RISCV_HWPROBE_EXT_ZVKG		(1 << 20)
#define		RISCV_HWPROBE_EXT_ZVKNED	(1 << 21)
#define		RISCV_HWPROBE_EXT_ZVKNHA	(1 << 22)
#define		RISCV_HWPROBE_EXT_ZVKNHB	(1 << 23)
#define		RISCV_HWPROBE_EXT_ZVKSED	(1 << 24)
#define		RISCV_HWPROBE_EXT_ZVKSH		(1 << 25)
#define		RISCV_HWPROBE_EXT_ZVKT		(1 << 26)
#define		RISCV_HWPROBE_EXT_ZFH		(1 << 27)
#define		RISCV_HWPROBE_EXT_ZFHMIN	(1 << 28)
#define		RISCV_HWPROBE_EXT_ZIHINTNTL	(1 << 29)
#define		RISCV_HWPROBE_EXT_ZVFH		(1 << 30)
#define		RISCV_HWPROBE_EXT_ZVFHMIN	(1ULL << 31)
#define		RISCV_HWPROBE_EXT_ZFA		(1ULL << 32)
#define		RISCV_HWPROBE_EXT_ZTSO		(1ULL << 33)
#define		RISCV_HWPROBE_EXT_ZACAS		(1ULL << 34)
#define		RISCV_HWPROBE_EXT_ZICOND	(1ULL << 35)
#define		RISCV_HWPROBE_EXT_ZIHINTPAUSE	(1ULL << 36)
#define		RISCV_HWPROBE_EXT_ZVE32X	(1ULL << 37)
#define		RISCV_HWPROBE_EXT_ZVE32F	(1ULL << 38)
#define		RISCV_HWPROBE_EXT_ZVE64X	(1ULL << 39)
#define		RISCV_HWPROBE_EXT_ZVE64F	(1ULL << 40)
#define		RISCV_HWPROBE_EXT_ZVE64D	(1ULL << 41)
#define		RISCV_HWPROBE_EXT_ZIMOP		(1ULL << 42)
#define		RISCV_HWPROBE_EXT_ZCA		(1ULL << 43)
#define		RISCV_HWPROBE_EXT_ZCB		(1ULL << 44)
#define		RISCV_HWPROBE_EXT_ZCD		(1ULL << 45)
#define		RISCV_HWPROBE_EXT_ZCF		(1ULL << 46)
#define		RISCV_HWPROBE_EXT_ZCMOP		(1ULL << 47)
#define		RISCV_HWPROBE_EXT_ZAWRS		(1ULL << 48)
#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
#define RISCV_HWPROBE_KEY_HIGHEST_VIRT_ADDRESS	7
#define RISCV_HWPROBE_KEY_TIME_CSR_FREQ	8
#define RISCV_HWPROBE_KEY_MISALIGNED_SCALAR_PERF	9
#define		RISCV_HWPROBE_MISALIGNED_SCALAR_UNKNOWN		0
#define		RISCV_HWPROBE_MISALIGNED_SCALAR_EMULATED	1
#define		RISCV_HWPROBE_MISALIGNED_SCALAR_SLOW		2
#define		RISCV_HWPROBE_MISALIGNED_SCALAR_FAST		3
#define		RISCV_HWPROBE_MISALIGNED_SCALAR_UNSUPPORTED	4
/* Increase RISCV_HWPROBE_MAX_KEY when adding items. */

/* Flags */
#define RISCV_HWPROBE_WHICH_CPUS	(1 << 0)

#endif