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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/loongarch/include/asm/cpu-features.h
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/* SPDX-License-Identifier: GPL-2.0 */

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/*

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 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited

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 *

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 * Derived from MIPS:

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 * Copyright (C) 2003, 2004 Ralf Baechle

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 * Copyright (C) 2004  Maciej W. Rozycki

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 */

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#ifndef __ASM_CPU_FEATURES_H

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#define __ASM_CPU_FEATURES_H

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#include <asm/cpu.h>

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#include <asm/cpu-info.h>

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#define cpu_opt(opt)			(cpu_data[0].options & (opt))

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#define cpu_has(feat)			(cpu_data[0].options & BIT_ULL(feat))

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#define cpu_has_loongarch		(cpu_has_loongarch32 | cpu_has_loongarch64)

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#define cpu_has_loongarch32		(cpu_data[0].isa_level & LOONGARCH_CPU_ISA_32BIT)

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#define cpu_has_loongarch64		(cpu_data[0].isa_level & LOONGARCH_CPU_ISA_64BIT)

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#ifdef CONFIG_32BIT

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# define cpu_has_64bits			(cpu_data[0].isa_level & LOONGARCH_CPU_ISA_64BIT)

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# define cpu_vabits			31

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# define cpu_pabits			31

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#endif

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#ifdef CONFIG_64BIT

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# define cpu_has_64bits			1

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# define cpu_vabits			cpu_data[0].vabits

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# define cpu_pabits			cpu_data[0].pabits

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# define __NEED_ADDRBITS_PROBE

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#endif

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/*

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 * SMP assumption: Options of CPU 0 are a superset of all processors.

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 * This is true for all known LoongArch systems.

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 */

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#define cpu_has_cpucfg		cpu_opt(LOONGARCH_CPU_CPUCFG)

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#define cpu_has_lam		cpu_opt(LOONGARCH_CPU_LAM)

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#define cpu_has_ual		cpu_opt(LOONGARCH_CPU_UAL)

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#define cpu_has_fpu		cpu_opt(LOONGARCH_CPU_FPU)

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#define cpu_has_lsx		cpu_opt(LOONGARCH_CPU_LSX)

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#define cpu_has_lasx		cpu_opt(LOONGARCH_CPU_LASX)

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#define cpu_has_crc32		cpu_opt(LOONGARCH_CPU_CRC32)

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#define cpu_has_complex		cpu_opt(LOONGARCH_CPU_COMPLEX)

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#define cpu_has_crypto		cpu_opt(LOONGARCH_CPU_CRYPTO)

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#define cpu_has_lvz		cpu_opt(LOONGARCH_CPU_LVZ)

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#define cpu_has_lbt_x86		cpu_opt(LOONGARCH_CPU_LBT_X86)

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#define cpu_has_lbt_arm		cpu_opt(LOONGARCH_CPU_LBT_ARM)

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#define cpu_has_lbt_mips	cpu_opt(LOONGARCH_CPU_LBT_MIPS)

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#define cpu_has_lbt		(cpu_has_lbt_x86|cpu_has_lbt_arm|cpu_has_lbt_mips)

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#define cpu_has_csr		cpu_opt(LOONGARCH_CPU_CSR)

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#define cpu_has_iocsr		cpu_opt(LOONGARCH_CPU_IOCSR)

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#define cpu_has_tlb		cpu_opt(LOONGARCH_CPU_TLB)

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#define cpu_has_watch		cpu_opt(LOONGARCH_CPU_WATCH)

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#define cpu_has_vint		cpu_opt(LOONGARCH_CPU_VINT)

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#define cpu_has_csripi		cpu_opt(LOONGARCH_CPU_CSRIPI)

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#define cpu_has_extioi		cpu_opt(LOONGARCH_CPU_EXTIOI)

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#define cpu_has_prefetch	cpu_opt(LOONGARCH_CPU_PREFETCH)

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#define cpu_has_pmp		cpu_opt(LOONGARCH_CPU_PMP)

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#define cpu_has_perf		cpu_opt(LOONGARCH_CPU_PMP)

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#define cpu_has_scalefreq	cpu_opt(LOONGARCH_CPU_SCALEFREQ)

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#define cpu_has_flatmode	cpu_opt(LOONGARCH_CPU_FLATMODE)

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#define cpu_has_eiodecode	cpu_opt(LOONGARCH_CPU_EIODECODE)

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#define cpu_has_guestid		cpu_opt(LOONGARCH_CPU_GUESTID)

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#define cpu_has_hypervisor	cpu_opt(LOONGARCH_CPU_HYPERVISOR)

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#define cpu_has_ptw		cpu_opt(LOONGARCH_CPU_PTW)

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#define cpu_has_lspw		cpu_opt(LOONGARCH_CPU_LSPW)

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#define cpu_has_avecint		cpu_opt(LOONGARCH_CPU_AVECINT)

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#endif /* __ASM_CPU_FEATURES_H */

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