1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
4  *
5  * Derived from MIPS:
6  * Copyright (C) 2003, 2004 Ralf Baechle
7  * Copyright (C) 2004  Maciej W. Rozycki
8  */
9 #ifndef __ASM_CPU_FEATURES_H
10 #define __ASM_CPU_FEATURES_H
11 
12 #include <asm/cpu.h>
13 #include <asm/cpu-info.h>
14 
15 #define cpu_opt(opt)			(cpu_data[0].options & (opt))
16 #define cpu_has(feat)			(cpu_data[0].options & BIT_ULL(feat))
17 
18 #define cpu_has_loongarch		(cpu_has_loongarch32 | cpu_has_loongarch64)
19 #define cpu_has_loongarch32		(cpu_data[0].isa_level & LOONGARCH_CPU_ISA_32BIT)
20 #define cpu_has_loongarch64		(cpu_data[0].isa_level & LOONGARCH_CPU_ISA_64BIT)
21 
22 #ifdef CONFIG_32BIT
23 # define cpu_has_64bits			(cpu_data[0].isa_level & LOONGARCH_CPU_ISA_64BIT)
24 # define cpu_vabits			31
25 # define cpu_pabits			31
26 #endif
27 
28 #ifdef CONFIG_64BIT
29 # define cpu_has_64bits			1
30 # define cpu_vabits			cpu_data[0].vabits
31 # define cpu_pabits			cpu_data[0].pabits
32 # define __NEED_ADDRBITS_PROBE
33 #endif
34 
35 /*
36  * SMP assumption: Options of CPU 0 are a superset of all processors.
37  * This is true for all known LoongArch systems.
38  */
39 #define cpu_has_cpucfg		cpu_opt(LOONGARCH_CPU_CPUCFG)
40 #define cpu_has_lam		cpu_opt(LOONGARCH_CPU_LAM)
41 #define cpu_has_ual		cpu_opt(LOONGARCH_CPU_UAL)
42 #define cpu_has_fpu		cpu_opt(LOONGARCH_CPU_FPU)
43 #define cpu_has_lsx		cpu_opt(LOONGARCH_CPU_LSX)
44 #define cpu_has_lasx		cpu_opt(LOONGARCH_CPU_LASX)
45 #define cpu_has_crc32		cpu_opt(LOONGARCH_CPU_CRC32)
46 #define cpu_has_complex		cpu_opt(LOONGARCH_CPU_COMPLEX)
47 #define cpu_has_crypto		cpu_opt(LOONGARCH_CPU_CRYPTO)
48 #define cpu_has_lvz		cpu_opt(LOONGARCH_CPU_LVZ)
49 #define cpu_has_lbt_x86		cpu_opt(LOONGARCH_CPU_LBT_X86)
50 #define cpu_has_lbt_arm		cpu_opt(LOONGARCH_CPU_LBT_ARM)
51 #define cpu_has_lbt_mips	cpu_opt(LOONGARCH_CPU_LBT_MIPS)
52 #define cpu_has_lbt		(cpu_has_lbt_x86|cpu_has_lbt_arm|cpu_has_lbt_mips)
53 #define cpu_has_csr		cpu_opt(LOONGARCH_CPU_CSR)
54 #define cpu_has_tlb		cpu_opt(LOONGARCH_CPU_TLB)
55 #define cpu_has_watch		cpu_opt(LOONGARCH_CPU_WATCH)
56 #define cpu_has_vint		cpu_opt(LOONGARCH_CPU_VINT)
57 #define cpu_has_csripi		cpu_opt(LOONGARCH_CPU_CSRIPI)
58 #define cpu_has_extioi		cpu_opt(LOONGARCH_CPU_EXTIOI)
59 #define cpu_has_prefetch	cpu_opt(LOONGARCH_CPU_PREFETCH)
60 #define cpu_has_pmp		cpu_opt(LOONGARCH_CPU_PMP)
61 #define cpu_has_perf		cpu_opt(LOONGARCH_CPU_PMP)
62 #define cpu_has_scalefreq	cpu_opt(LOONGARCH_CPU_SCALEFREQ)
63 #define cpu_has_flatmode	cpu_opt(LOONGARCH_CPU_FLATMODE)
64 #define cpu_has_eiodecode	cpu_opt(LOONGARCH_CPU_EIODECODE)
65 #define cpu_has_guestid		cpu_opt(LOONGARCH_CPU_GUESTID)
66 #define cpu_has_hypervisor	cpu_opt(LOONGARCH_CPU_HYPERVISOR)
67 #define cpu_has_ptw		cpu_opt(LOONGARCH_CPU_PTW)
68 
69 #endif /* __ASM_CPU_FEATURES_H */
70