xref: /openbmc/linux/arch/arm64/include/asm/hwcap.h (revision c900529f3d9161bfde5cca0754f83b4d3c3e0220)
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  #define COMPAT_HWCAP_FPHP	(1 << 22)
35  #define COMPAT_HWCAP_ASIMDHP	(1 << 23)
36  #define COMPAT_HWCAP_ASIMDDP	(1 << 24)
37  #define COMPAT_HWCAP_ASIMDFHM	(1 << 25)
38  #define COMPAT_HWCAP_ASIMDBF16	(1 << 26)
39  #define COMPAT_HWCAP_I8MM	(1 << 27)
40  
41  #define COMPAT_HWCAP2_AES	(1 << 0)
42  #define COMPAT_HWCAP2_PMULL	(1 << 1)
43  #define COMPAT_HWCAP2_SHA1	(1 << 2)
44  #define COMPAT_HWCAP2_SHA2	(1 << 3)
45  #define COMPAT_HWCAP2_CRC32	(1 << 4)
46  #define COMPAT_HWCAP2_SB	(1 << 5)
47  #define COMPAT_HWCAP2_SSBS	(1 << 6)
48  
49  #ifndef __ASSEMBLY__
50  #include <linux/log2.h>
51  
52  /*
53   * For userspace we represent hwcaps as a collection of HWCAP{,2}_x bitfields
54   * as described in uapi/asm/hwcap.h. For the kernel we represent hwcaps as
55   * natural numbers (in a single range of size MAX_CPU_FEATURES) defined here
56   * with prefix KERNEL_HWCAP_ mapped to their HWCAP{,2}_x counterpart.
57   *
58   * Hwcaps should be set and tested within the kernel via the
59   * cpu_{set,have}_named_feature(feature) where feature is the unique suffix
60   * of KERNEL_HWCAP_{feature}.
61   */
62  #define __khwcap_feature(x)		const_ilog2(HWCAP_ ## x)
63  #define KERNEL_HWCAP_FP			__khwcap_feature(FP)
64  #define KERNEL_HWCAP_ASIMD		__khwcap_feature(ASIMD)
65  #define KERNEL_HWCAP_EVTSTRM		__khwcap_feature(EVTSTRM)
66  #define KERNEL_HWCAP_AES		__khwcap_feature(AES)
67  #define KERNEL_HWCAP_PMULL		__khwcap_feature(PMULL)
68  #define KERNEL_HWCAP_SHA1		__khwcap_feature(SHA1)
69  #define KERNEL_HWCAP_SHA2		__khwcap_feature(SHA2)
70  #define KERNEL_HWCAP_CRC32		__khwcap_feature(CRC32)
71  #define KERNEL_HWCAP_ATOMICS		__khwcap_feature(ATOMICS)
72  #define KERNEL_HWCAP_FPHP		__khwcap_feature(FPHP)
73  #define KERNEL_HWCAP_ASIMDHP		__khwcap_feature(ASIMDHP)
74  #define KERNEL_HWCAP_CPUID		__khwcap_feature(CPUID)
75  #define KERNEL_HWCAP_ASIMDRDM		__khwcap_feature(ASIMDRDM)
76  #define KERNEL_HWCAP_JSCVT		__khwcap_feature(JSCVT)
77  #define KERNEL_HWCAP_FCMA		__khwcap_feature(FCMA)
78  #define KERNEL_HWCAP_LRCPC		__khwcap_feature(LRCPC)
79  #define KERNEL_HWCAP_DCPOP		__khwcap_feature(DCPOP)
80  #define KERNEL_HWCAP_SHA3		__khwcap_feature(SHA3)
81  #define KERNEL_HWCAP_SM3		__khwcap_feature(SM3)
82  #define KERNEL_HWCAP_SM4		__khwcap_feature(SM4)
83  #define KERNEL_HWCAP_ASIMDDP		__khwcap_feature(ASIMDDP)
84  #define KERNEL_HWCAP_SHA512		__khwcap_feature(SHA512)
85  #define KERNEL_HWCAP_SVE		__khwcap_feature(SVE)
86  #define KERNEL_HWCAP_ASIMDFHM		__khwcap_feature(ASIMDFHM)
87  #define KERNEL_HWCAP_DIT		__khwcap_feature(DIT)
88  #define KERNEL_HWCAP_USCAT		__khwcap_feature(USCAT)
89  #define KERNEL_HWCAP_ILRCPC		__khwcap_feature(ILRCPC)
90  #define KERNEL_HWCAP_FLAGM		__khwcap_feature(FLAGM)
91  #define KERNEL_HWCAP_SSBS		__khwcap_feature(SSBS)
92  #define KERNEL_HWCAP_SB			__khwcap_feature(SB)
93  #define KERNEL_HWCAP_PACA		__khwcap_feature(PACA)
94  #define KERNEL_HWCAP_PACG		__khwcap_feature(PACG)
95  
96  #define __khwcap2_feature(x)		(const_ilog2(HWCAP2_ ## x) + 64)
97  #define KERNEL_HWCAP_DCPODP		__khwcap2_feature(DCPODP)
98  #define KERNEL_HWCAP_SVE2		__khwcap2_feature(SVE2)
99  #define KERNEL_HWCAP_SVEAES		__khwcap2_feature(SVEAES)
100  #define KERNEL_HWCAP_SVEPMULL		__khwcap2_feature(SVEPMULL)
101  #define KERNEL_HWCAP_SVEBITPERM		__khwcap2_feature(SVEBITPERM)
102  #define KERNEL_HWCAP_SVESHA3		__khwcap2_feature(SVESHA3)
103  #define KERNEL_HWCAP_SVESM4		__khwcap2_feature(SVESM4)
104  #define KERNEL_HWCAP_FLAGM2		__khwcap2_feature(FLAGM2)
105  #define KERNEL_HWCAP_FRINT		__khwcap2_feature(FRINT)
106  #define KERNEL_HWCAP_SVEI8MM		__khwcap2_feature(SVEI8MM)
107  #define KERNEL_HWCAP_SVEF32MM		__khwcap2_feature(SVEF32MM)
108  #define KERNEL_HWCAP_SVEF64MM		__khwcap2_feature(SVEF64MM)
109  #define KERNEL_HWCAP_SVEBF16		__khwcap2_feature(SVEBF16)
110  #define KERNEL_HWCAP_I8MM		__khwcap2_feature(I8MM)
111  #define KERNEL_HWCAP_BF16		__khwcap2_feature(BF16)
112  #define KERNEL_HWCAP_DGH		__khwcap2_feature(DGH)
113  #define KERNEL_HWCAP_RNG		__khwcap2_feature(RNG)
114  #define KERNEL_HWCAP_BTI		__khwcap2_feature(BTI)
115  #define KERNEL_HWCAP_MTE		__khwcap2_feature(MTE)
116  #define KERNEL_HWCAP_ECV		__khwcap2_feature(ECV)
117  #define KERNEL_HWCAP_AFP		__khwcap2_feature(AFP)
118  #define KERNEL_HWCAP_RPRES		__khwcap2_feature(RPRES)
119  #define KERNEL_HWCAP_MTE3		__khwcap2_feature(MTE3)
120  #define KERNEL_HWCAP_SME		__khwcap2_feature(SME)
121  #define KERNEL_HWCAP_SME_I16I64		__khwcap2_feature(SME_I16I64)
122  #define KERNEL_HWCAP_SME_F64F64		__khwcap2_feature(SME_F64F64)
123  #define KERNEL_HWCAP_SME_I8I32		__khwcap2_feature(SME_I8I32)
124  #define KERNEL_HWCAP_SME_F16F32		__khwcap2_feature(SME_F16F32)
125  #define KERNEL_HWCAP_SME_B16F32		__khwcap2_feature(SME_B16F32)
126  #define KERNEL_HWCAP_SME_F32F32		__khwcap2_feature(SME_F32F32)
127  #define KERNEL_HWCAP_SME_FA64		__khwcap2_feature(SME_FA64)
128  #define KERNEL_HWCAP_WFXT		__khwcap2_feature(WFXT)
129  #define KERNEL_HWCAP_EBF16		__khwcap2_feature(EBF16)
130  #define KERNEL_HWCAP_SVE_EBF16		__khwcap2_feature(SVE_EBF16)
131  #define KERNEL_HWCAP_CSSC		__khwcap2_feature(CSSC)
132  #define KERNEL_HWCAP_RPRFM		__khwcap2_feature(RPRFM)
133  #define KERNEL_HWCAP_SVE2P1		__khwcap2_feature(SVE2P1)
134  #define KERNEL_HWCAP_SME2		__khwcap2_feature(SME2)
135  #define KERNEL_HWCAP_SME2P1		__khwcap2_feature(SME2P1)
136  #define KERNEL_HWCAP_SME_I16I32		__khwcap2_feature(SME_I16I32)
137  #define KERNEL_HWCAP_SME_BI32I32	__khwcap2_feature(SME_BI32I32)
138  #define KERNEL_HWCAP_SME_B16B16		__khwcap2_feature(SME_B16B16)
139  #define KERNEL_HWCAP_SME_F16F16		__khwcap2_feature(SME_F16F16)
140  #define KERNEL_HWCAP_MOPS		__khwcap2_feature(MOPS)
141  #define KERNEL_HWCAP_HBC		__khwcap2_feature(HBC)
142  
143  /*
144   * This yields a mask that user programs can use to figure out what
145   * instruction set this cpu supports.
146   */
147  #define ELF_HWCAP		cpu_get_elf_hwcap()
148  #define ELF_HWCAP2		cpu_get_elf_hwcap2()
149  
150  #ifdef CONFIG_COMPAT
151  #define COMPAT_ELF_HWCAP	(compat_elf_hwcap)
152  #define COMPAT_ELF_HWCAP2	(compat_elf_hwcap2)
153  extern unsigned int compat_elf_hwcap, compat_elf_hwcap2;
154  #endif
155  
156  enum {
157  	CAP_HWCAP = 1,
158  #ifdef CONFIG_COMPAT
159  	CAP_COMPAT_HWCAP,
160  	CAP_COMPAT_HWCAP2,
161  #endif
162  };
163  
164  #endif
165  #endif
166