18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-or-later */
28c2ecf20Sopenharmony_ci/*
38c2ecf20Sopenharmony_ci * pmc.h
48c2ecf20Sopenharmony_ci * Copyright (C) 2004  David Gibson, IBM Corporation
58c2ecf20Sopenharmony_ci */
68c2ecf20Sopenharmony_ci#ifndef _POWERPC_PMC_H
78c2ecf20Sopenharmony_ci#define _POWERPC_PMC_H
88c2ecf20Sopenharmony_ci#ifdef __KERNEL__
98c2ecf20Sopenharmony_ci
108c2ecf20Sopenharmony_ci#include <asm/ptrace.h>
118c2ecf20Sopenharmony_ci
128c2ecf20Sopenharmony_citypedef void (*perf_irq_t)(struct pt_regs *);
138c2ecf20Sopenharmony_ciextern perf_irq_t perf_irq;
148c2ecf20Sopenharmony_ci
158c2ecf20Sopenharmony_ciint reserve_pmc_hardware(perf_irq_t new_perf_irq);
168c2ecf20Sopenharmony_civoid release_pmc_hardware(void);
178c2ecf20Sopenharmony_civoid ppc_enable_pmcs(void);
188c2ecf20Sopenharmony_ci
198c2ecf20Sopenharmony_ci#ifdef CONFIG_PPC_BOOK3S_64
208c2ecf20Sopenharmony_ci#include <asm/lppaca.h>
218c2ecf20Sopenharmony_ci#include <asm/firmware.h>
228c2ecf20Sopenharmony_ci
238c2ecf20Sopenharmony_cistatic inline void ppc_set_pmu_inuse(int inuse)
248c2ecf20Sopenharmony_ci{
258c2ecf20Sopenharmony_ci#if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE)
268c2ecf20Sopenharmony_ci	if (firmware_has_feature(FW_FEATURE_LPAR)) {
278c2ecf20Sopenharmony_ci#ifdef CONFIG_PPC_PSERIES
288c2ecf20Sopenharmony_ci		get_lppaca()->pmcregs_in_use = inuse;
298c2ecf20Sopenharmony_ci#endif
308c2ecf20Sopenharmony_ci	}
318c2ecf20Sopenharmony_ci#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
328c2ecf20Sopenharmony_ci	get_paca()->pmcregs_in_use = inuse;
338c2ecf20Sopenharmony_ci#endif
348c2ecf20Sopenharmony_ci#endif
358c2ecf20Sopenharmony_ci}
368c2ecf20Sopenharmony_ci
378c2ecf20Sopenharmony_ci#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
388c2ecf20Sopenharmony_cistatic inline int ppc_get_pmu_inuse(void)
398c2ecf20Sopenharmony_ci{
408c2ecf20Sopenharmony_ci	return get_paca()->pmcregs_in_use;
418c2ecf20Sopenharmony_ci}
428c2ecf20Sopenharmony_ci#endif
438c2ecf20Sopenharmony_ci
448c2ecf20Sopenharmony_ciextern void power4_enable_pmcs(void);
458c2ecf20Sopenharmony_ci
468c2ecf20Sopenharmony_ci#else /* CONFIG_PPC64 */
478c2ecf20Sopenharmony_ci
488c2ecf20Sopenharmony_cistatic inline void ppc_set_pmu_inuse(int inuse) { }
498c2ecf20Sopenharmony_ci
508c2ecf20Sopenharmony_ci#endif
518c2ecf20Sopenharmony_ci
528c2ecf20Sopenharmony_ci#endif /* __KERNEL__ */
538c2ecf20Sopenharmony_ci#endif /* _POWERPC_PMC_H */
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