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) /* Obsolete */
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) + 64)
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 #define KERNEL_HWCAP_MTE3		__khwcap2_feature(MTE3)
112 #define KERNEL_HWCAP_SME		__khwcap2_feature(SME)
113 #define KERNEL_HWCAP_SME_I16I64		__khwcap2_feature(SME_I16I64)
114 #define KERNEL_HWCAP_SME_F64F64		__khwcap2_feature(SME_F64F64)
115 #define KERNEL_HWCAP_SME_I8I32		__khwcap2_feature(SME_I8I32)
116 #define KERNEL_HWCAP_SME_F16F32		__khwcap2_feature(SME_F16F32)
117 #define KERNEL_HWCAP_SME_B16F32		__khwcap2_feature(SME_B16F32)
118 #define KERNEL_HWCAP_SME_F32F32		__khwcap2_feature(SME_F32F32)
119 #define KERNEL_HWCAP_SME_FA64		__khwcap2_feature(SME_FA64)
120 #define KERNEL_HWCAP_WFXT		__khwcap2_feature(WFXT)
121 #define KERNEL_HWCAP_EBF16		__khwcap2_feature(EBF16)
122 #define KERNEL_HWCAP_SVE_EBF16		__khwcap2_feature(SVE_EBF16)
123 
124 /*
125  * This yields a mask that user programs can use to figure out what
126  * instruction set this cpu supports.
127  */
128 #define ELF_HWCAP		cpu_get_elf_hwcap()
129 #define ELF_HWCAP2		cpu_get_elf_hwcap2()
130 
131 #ifdef CONFIG_COMPAT
132 #define COMPAT_ELF_HWCAP	(compat_elf_hwcap)
133 #define COMPAT_ELF_HWCAP2	(compat_elf_hwcap2)
134 extern unsigned int compat_elf_hwcap, compat_elf_hwcap2;
135 #endif
136 
137 enum {
138 	CAP_HWCAP = 1,
139 #ifdef CONFIG_COMPAT
140 	CAP_COMPAT_HWCAP,
141 	CAP_COMPAT_HWCAP2,
142 #endif
143 };
144 
145 #endif
146 #endif
147