1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2012 ARM Ltd.
4 */
5#ifndef __ASM_HWCAP_H
6#define __ASM_HWCAP_H
7
8#include <uapi/asm/hwcap.h>
9#include <asm/cpufeature.h>
10
11#define COMPAT_HWCAP_SWP	(1 << 0)
12#define COMPAT_HWCAP_HALF	(1 << 1)
13#define COMPAT_HWCAP_THUMB	(1 << 2)
14#define COMPAT_HWCAP_26BIT	(1 << 3)
15#define COMPAT_HWCAP_FAST_MULT	(1 << 4)
16#define COMPAT_HWCAP_FPA	(1 << 5)
17#define COMPAT_HWCAP_VFP	(1 << 6)
18#define COMPAT_HWCAP_EDSP	(1 << 7)
19#define COMPAT_HWCAP_JAVA	(1 << 8)
20#define COMPAT_HWCAP_IWMMXT	(1 << 9)
21#define COMPAT_HWCAP_CRUNCH	(1 << 10)
22#define COMPAT_HWCAP_THUMBEE	(1 << 11)
23#define COMPAT_HWCAP_NEON	(1 << 12)
24#define COMPAT_HWCAP_VFPv3	(1 << 13)
25#define COMPAT_HWCAP_VFPV3D16	(1 << 14)
26#define COMPAT_HWCAP_TLS	(1 << 15)
27#define COMPAT_HWCAP_VFPv4	(1 << 16)
28#define COMPAT_HWCAP_IDIVA	(1 << 17)
29#define COMPAT_HWCAP_IDIVT	(1 << 18)
30#define COMPAT_HWCAP_IDIV	(COMPAT_HWCAP_IDIVA|COMPAT_HWCAP_IDIVT)
31#define COMPAT_HWCAP_VFPD32	(1 << 19)
32#define COMPAT_HWCAP_LPAE	(1 << 20)
33#define COMPAT_HWCAP_EVTSTRM	(1 << 21)
34
35#define COMPAT_HWCAP2_AES	(1 << 0)
36#define COMPAT_HWCAP2_PMULL	(1 << 1)
37#define COMPAT_HWCAP2_SHA1	(1 << 2)
38#define COMPAT_HWCAP2_SHA2	(1 << 3)
39#define COMPAT_HWCAP2_CRC32	(1 << 4)
40
41#ifndef __ASSEMBLY__
42#include <linux/log2.h>
43
44/*
45 * For userspace we represent hwcaps as a collection of HWCAP{,2}_x bitfields
46 * as described in uapi/asm/hwcap.h. For the kernel we represent hwcaps as
47 * natural numbers (in a single range of size MAX_CPU_FEATURES) defined here
48 * with prefix KERNEL_HWCAP_ mapped to their HWCAP{,2}_x counterpart.
49 *
50 * Hwcaps should be set and tested within the kernel via the
51 * cpu_{set,have}_named_feature(feature) where feature is the unique suffix
52 * of KERNEL_HWCAP_{feature}.
53 */
54#define __khwcap_feature(x)		const_ilog2(HWCAP_ ## x)
55#define KERNEL_HWCAP_FP			__khwcap_feature(FP)
56#define KERNEL_HWCAP_ASIMD		__khwcap_feature(ASIMD)
57#define KERNEL_HWCAP_EVTSTRM		__khwcap_feature(EVTSTRM)
58#define KERNEL_HWCAP_AES		__khwcap_feature(AES)
59#define KERNEL_HWCAP_PMULL		__khwcap_feature(PMULL)
60#define KERNEL_HWCAP_SHA1		__khwcap_feature(SHA1)
61#define KERNEL_HWCAP_SHA2		__khwcap_feature(SHA2)
62#define KERNEL_HWCAP_CRC32		__khwcap_feature(CRC32)
63#define KERNEL_HWCAP_ATOMICS		__khwcap_feature(ATOMICS)
64#define KERNEL_HWCAP_FPHP		__khwcap_feature(FPHP)
65#define KERNEL_HWCAP_ASIMDHP		__khwcap_feature(ASIMDHP)
66#define KERNEL_HWCAP_CPUID		__khwcap_feature(CPUID)
67#define KERNEL_HWCAP_ASIMDRDM		__khwcap_feature(ASIMDRDM)
68#define KERNEL_HWCAP_JSCVT		__khwcap_feature(JSCVT)
69#define KERNEL_HWCAP_FCMA		__khwcap_feature(FCMA)
70#define KERNEL_HWCAP_LRCPC		__khwcap_feature(LRCPC)
71#define KERNEL_HWCAP_DCPOP		__khwcap_feature(DCPOP)
72#define KERNEL_HWCAP_SHA3		__khwcap_feature(SHA3)
73#define KERNEL_HWCAP_SM3		__khwcap_feature(SM3)
74#define KERNEL_HWCAP_SM4		__khwcap_feature(SM4)
75#define KERNEL_HWCAP_ASIMDDP		__khwcap_feature(ASIMDDP)
76#define KERNEL_HWCAP_SHA512		__khwcap_feature(SHA512)
77#define KERNEL_HWCAP_SVE		__khwcap_feature(SVE)
78#define KERNEL_HWCAP_ASIMDFHM		__khwcap_feature(ASIMDFHM)
79#define KERNEL_HWCAP_DIT		__khwcap_feature(DIT)
80#define KERNEL_HWCAP_USCAT		__khwcap_feature(USCAT)
81#define KERNEL_HWCAP_ILRCPC		__khwcap_feature(ILRCPC)
82#define KERNEL_HWCAP_FLAGM		__khwcap_feature(FLAGM)
83#define KERNEL_HWCAP_SSBS		__khwcap_feature(SSBS)
84#define KERNEL_HWCAP_SB			__khwcap_feature(SB)
85#define KERNEL_HWCAP_PACA		__khwcap_feature(PACA)
86#define KERNEL_HWCAP_PACG		__khwcap_feature(PACG)
87
88#define __khwcap2_feature(x)		(const_ilog2(HWCAP2_ ## x) + 32)
89#define KERNEL_HWCAP_DCPODP		__khwcap2_feature(DCPODP)
90#define KERNEL_HWCAP_SVE2		__khwcap2_feature(SVE2)
91#define KERNEL_HWCAP_SVEAES		__khwcap2_feature(SVEAES)
92#define KERNEL_HWCAP_SVEPMULL		__khwcap2_feature(SVEPMULL)
93#define KERNEL_HWCAP_SVEBITPERM		__khwcap2_feature(SVEBITPERM)
94#define KERNEL_HWCAP_SVESHA3		__khwcap2_feature(SVESHA3)
95#define KERNEL_HWCAP_SVESM4		__khwcap2_feature(SVESM4)
96#define KERNEL_HWCAP_FLAGM2		__khwcap2_feature(FLAGM2)
97#define KERNEL_HWCAP_FRINT		__khwcap2_feature(FRINT)
98#define KERNEL_HWCAP_SVEI8MM		__khwcap2_feature(SVEI8MM)
99#define KERNEL_HWCAP_SVEF32MM		__khwcap2_feature(SVEF32MM)
100#define KERNEL_HWCAP_SVEF64MM		__khwcap2_feature(SVEF64MM)
101#define KERNEL_HWCAP_SVEBF16		__khwcap2_feature(SVEBF16)
102#define KERNEL_HWCAP_I8MM		__khwcap2_feature(I8MM)
103#define KERNEL_HWCAP_BF16		__khwcap2_feature(BF16)
104#define KERNEL_HWCAP_DGH		__khwcap2_feature(DGH)
105#define KERNEL_HWCAP_RNG		__khwcap2_feature(RNG)
106#define KERNEL_HWCAP_BTI		__khwcap2_feature(BTI)
107#define KERNEL_HWCAP_MTE		__khwcap2_feature(MTE)
108#define KERNEL_HWCAP_ECV		__khwcap2_feature(ECV)
109#define KERNEL_HWCAP_AFP		__khwcap2_feature(AFP)
110#define KERNEL_HWCAP_RPRES		__khwcap2_feature(RPRES)
111
112/*
113 * This yields a mask that user programs can use to figure out what
114 * instruction set this cpu supports.
115 */
116#define ELF_HWCAP		cpu_get_elf_hwcap()
117#define ELF_HWCAP2		cpu_get_elf_hwcap2()
118
119#ifdef CONFIG_COMPAT
120#define COMPAT_ELF_HWCAP	(compat_elf_hwcap)
121#define COMPAT_ELF_HWCAP2	(compat_elf_hwcap2)
122extern unsigned int compat_elf_hwcap, compat_elf_hwcap2;
123#endif
124
125enum {
126	CAP_HWCAP = 1,
127#ifdef CONFIG_COMPAT
128	CAP_COMPAT_HWCAP,
129	CAP_COMPAT_HWCAP2,
130#endif
131};
132
133#endif
134#endif
135