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