summaryrefslogtreecommitdiff
path: root/arch/arm64/include/asm/hwcap.h
blob: 9a5498c2c8eeac5786883af84acc1c73d73d0b99 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2012 ARM Ltd.
 */
#ifndef __ASM_HWCAP_H
#define __ASM_HWCAP_H

#include <uapi/asm/hwcap.h>
#include <asm/cpufeature.h>

#define COMPAT_HWCAP_SWP	(1 << 0)
#define COMPAT_HWCAP_HALF	(1 << 1)
#define COMPAT_HWCAP_THUMB	(1 << 2)
#define COMPAT_HWCAP_26BIT	(1 << 3)
#define COMPAT_HWCAP_FAST_MULT	(1 << 4)
#define COMPAT_HWCAP_FPA	(1 << 5)
#define COMPAT_HWCAP_VFP	(1 << 6)
#define COMPAT_HWCAP_EDSP	(1 << 7)
#define COMPAT_HWCAP_JAVA	(1 << 8)
#define COMPAT_HWCAP_IWMMXT	(1 << 9)
#define COMPAT_HWCAP_CRUNCH	(1 << 10)
#define COMPAT_HWCAP_THUMBEE	(1 << 11)
#define COMPAT_HWCAP_NEON	(1 << 12)
#define COMPAT_HWCAP_VFPv3	(1 << 13)
#define COMPAT_HWCAP_VFPV3D16	(1 << 14)
#define COMPAT_HWCAP_TLS	(1 << 15)
#define COMPAT_HWCAP_VFPv4	(1 << 16)
#define COMPAT_HWCAP_IDIVA	(1 << 17)
#define COMPAT_HWCAP_IDIVT	(1 << 18)
#define COMPAT_HWCAP_IDIV	(COMPAT_HWCAP_IDIVA|COMPAT_HWCAP_IDIVT)
#define COMPAT_HWCAP_VFPD32	(1 << 19)
#define COMPAT_HWCAP_LPAE	(1 << 20)
#define COMPAT_HWCAP_EVTSTRM	(1 << 21)

#define COMPAT_HWCAP2_AES	(1 << 0)
#define COMPAT_HWCAP2_PMULL	(1 << 1)
#define COMPAT_HWCAP2_SHA1	(1 << 2)
#define COMPAT_HWCAP2_SHA2	(1 << 3)
#define COMPAT_HWCAP2_CRC32	(1 << 4)

#ifndef __ASSEMBLY__
#include <linux/log2.h>

/*
 * For userspace we represent hwcaps as a collection of HWCAP{,2}_x bitfields
 * as described in uapi/asm/hwcap.h. For the kernel we represent hwcaps as
 * natural numbers (in a single range of size MAX_CPU_FEATURES) defined here
 * with prefix KERNEL_HWCAP_ mapped to their HWCAP{,2}_x counterpart.
 *
 * Hwcaps should be set and tested within the kernel via the
 * cpu_{set,have}_named_feature(feature) where feature is the unique suffix
 * of KERNEL_HWCAP_{feature}.
 */
#define __khwcap_feature(x)		const_ilog2(HWCAP_ ## x)
#define KERNEL_HWCAP_FP			__khwcap_feature(FP)
#define KERNEL_HWCAP_ASIMD		__khwcap_feature(ASIMD)
#define KERNEL_HWCAP_EVTSTRM		__khwcap_feature(EVTSTRM)
#define KERNEL_HWCAP_AES		__khwcap_feature(AES)
#define KERNEL_HWCAP_PMULL		__khwcap_feature(PMULL)
#define KERNEL_HWCAP_SHA1		__khwcap_feature(SHA1)
#define KERNEL_HWCAP_SHA2		__khwcap_feature(SHA2)
#define KERNEL_HWCAP_CRC32		__khwcap_feature(CRC32)
#define KERNEL_HWCAP_ATOMICS		__khwcap_feature(ATOMICS)
#define KERNEL_HWCAP_FPHP		__khwcap_feature(FPHP)
#define KERNEL_HWCAP_ASIMDHP		__khwcap_feature(ASIMDHP)
#define KERNEL_HWCAP_CPUID		__khwcap_feature(CPUID)
#define KERNEL_HWCAP_ASIMDRDM		__khwcap_feature(ASIMDRDM)
#define KERNEL_HWCAP_JSCVT		__khwcap_feature(JSCVT)
#define KERNEL_HWCAP_FCMA		__khwcap_feature(FCMA)
#define KERNEL_HWCAP_LRCPC		__khwcap_feature(LRCPC)
#define KERNEL_HWCAP_DCPOP		__khwcap_feature(DCPOP)
#define KERNEL_HWCAP_SHA3		__khwcap_feature(SHA3)
#define KERNEL_HWCAP_SM3		__khwcap_feature(SM3)
#define KERNEL_HWCAP_SM4		__khwcap_feature(SM4)
#define KERNEL_HWCAP_ASIMDDP		__khwcap_feature(ASIMDDP)
#define KERNEL_HWCAP_SHA512		__khwcap_feature(SHA512)
#define KERNEL_HWCAP_SVE		__khwcap_feature(SVE)
#define KERNEL_HWCAP_ASIMDFHM		__khwcap_feature(ASIMDFHM)
#define KERNEL_HWCAP_DIT		__khwcap_feature(DIT)
#define KERNEL_HWCAP_USCAT		__khwcap_feature(USCAT)
#define KERNEL_HWCAP_ILRCPC		__khwcap_feature(ILRCPC)
#define KERNEL_HWCAP_FLAGM		__khwcap_feature(FLAGM)
#define KERNEL_HWCAP_SSBS		__khwcap_feature(SSBS)
#define KERNEL_HWCAP_SB			__khwcap_feature(SB)
#define KERNEL_HWCAP_PACA		__khwcap_feature(PACA)
#define KERNEL_HWCAP_PACG		__khwcap_feature(PACG)

#define __khwcap2_feature(x)		(const_ilog2(HWCAP2_ ## x) + 32)
#define KERNEL_HWCAP_DCPODP		__khwcap2_feature(DCPODP)
#define KERNEL_HWCAP_SVE2		__khwcap2_feature(SVE2)
#define KERNEL_HWCAP_SVEAES		__khwcap2_feature(SVEAES)
#define KERNEL_HWCAP_SVEPMULL		__khwcap2_feature(SVEPMULL)
#define KERNEL_HWCAP_SVEBITPERM		__khwcap2_feature(SVEBITPERM)
#define KERNEL_HWCAP_SVESHA3		__khwcap2_feature(SVESHA3)
#define KERNEL_HWCAP_SVESM4		__khwcap2_feature(SVESM4)
#define KERNEL_HWCAP_FLAGM2		__khwcap2_feature(FLAGM2)
#define KERNEL_HWCAP_FRINT		__khwcap2_feature(FRINT)
#define KERNEL_HWCAP_SVEI8MM		__khwcap2_feature(SVEI8MM)
#define KERNEL_HWCAP_SVEF32MM		__khwcap2_feature(SVEF32MM)
#define KERNEL_HWCAP_SVEF64MM		__khwcap2_feature(SVEF64MM)
#define KERNEL_HWCAP_SVEBF16		__khwcap2_feature(SVEBF16)
#define KERNEL_HWCAP_I8MM		__khwcap2_feature(I8MM)
#define KERNEL_HWCAP_BF16		__khwcap2_feature(BF16)
#define KERNEL_HWCAP_DGH		__khwcap2_feature(DGH)
#define KERNEL_HWCAP_RNG		__khwcap2_feature(RNG)
#define KERNEL_HWCAP_BTI		__khwcap2_feature(BTI)
#define KERNEL_HWCAP_MTE		__khwcap2_feature(MTE)

/*
 * This yields a mask that user programs can use to figure out what
 * instruction set this cpu supports.
 */
#define ELF_HWCAP		cpu_get_elf_hwcap()
#define ELF_HWCAP2		cpu_get_elf_hwcap2()

#ifdef CONFIG_COMPAT
#define COMPAT_ELF_HWCAP	(compat_elf_hwcap)
#define COMPAT_ELF_HWCAP2	(compat_elf_hwcap2)
extern unsigned int compat_elf_hwcap, compat_elf_hwcap2;
#endif

enum {
	CAP_HWCAP = 1,
#ifdef CONFIG_COMPAT
	CAP_COMPAT_HWCAP,
	CAP_COMPAT_HWCAP2,
#endif
};

#endif
#endif