/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* pmc.h
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* Copyright (C) 2004 David Gibson, IBM Corporation
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*/
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#ifndef _POWERPC_PMC_H
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#define _POWERPC_PMC_H
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#ifdef __KERNEL__
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#include <asm/ptrace.h>
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typedef void (*perf_irq_t)(struct pt_regs *);
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extern perf_irq_t perf_irq;
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int reserve_pmc_hardware(perf_irq_t new_perf_irq);
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void release_pmc_hardware(void);
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void ppc_enable_pmcs(void);
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#ifdef CONFIG_PPC_BOOK3S_64
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#include <asm/lppaca.h>
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#include <asm/firmware.h>
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static inline void ppc_set_pmu_inuse(int inuse)
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{
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#if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE)
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if (firmware_has_feature(FW_FEATURE_LPAR)) {
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#ifdef CONFIG_PPC_PSERIES
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get_lppaca()->pmcregs_in_use = inuse;
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#endif
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}
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#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
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get_paca()->pmcregs_in_use = inuse;
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#endif
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#endif
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}
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#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
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static inline int ppc_get_pmu_inuse(void)
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{
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return get_paca()->pmcregs_in_use;
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}
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#endif
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extern void power4_enable_pmcs(void);
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#else /* CONFIG_PPC64 */
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static inline void ppc_set_pmu_inuse(int inuse) { }
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#endif
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#endif /* __KERNEL__ */
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#endif /* _POWERPC_PMC_H */
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