| | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| | 2 | /* |
| | 3 | * pmc.h |
| | 4 | * Copyright (C) 2004 David Gibson, IBM Corporation |
| | 5 | */ |
| | 6 | #ifndef _POWERPC_PMC_H |
| | 7 | #define _POWERPC_PMC_H |
| | 8 | #ifdef __KERNEL__ |
| | 9 | |
| | 10 | #include <asm/ptrace.h> |
| | 11 | |
| | 12 | typedef void (*perf_irq_t)(struct pt_regs *); |
| | 13 | extern perf_irq_t perf_irq; |
| | 14 | |
| | 15 | int reserve_pmc_hardware(perf_irq_t new_perf_irq); |
| | 16 | void release_pmc_hardware(void); |
| | 17 | void ppc_enable_pmcs(void); |
| | 18 | |
| | 19 | #ifdef CONFIG_PPC_BOOK3S_64 |
| | 20 | #include <asm/lppaca.h> |
| | 21 | #include <asm/firmware.h> |
| | 22 | |
| | 23 | static inline void ppc_set_pmu_inuse(int inuse) |
| | 24 | { |
| | 25 | #if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE) |
| | 26 | if (firmware_has_feature(FW_FEATURE_LPAR)) { |
| | 27 | #ifdef CONFIG_PPC_PSERIES |
| | 28 | get_lppaca()->pmcregs_in_use = inuse; |
| | 29 | #endif |
| | 30 | } |
| | 31 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE |
| | 32 | get_paca()->pmcregs_in_use = inuse; |
| | 33 | #endif |
| | 34 | #endif |
| | 35 | } |
| | 36 | |
| | 37 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE |
| | 38 | static inline int ppc_get_pmu_inuse(void) |
| | 39 | { |
| | 40 | return get_paca()->pmcregs_in_use; |
| | 41 | } |
| | 42 | #endif |
| | 43 | |
| | 44 | extern void power4_enable_pmcs(void); |
| | 45 | |
| | 46 | #else /* CONFIG_PPC64 */ |
| | 47 | |
| | 48 | static inline void ppc_set_pmu_inuse(int inuse) { } |
| | 49 | |
| | 50 | #endif |
| | 51 | |
| | 52 | #endif /* __KERNEL__ */ |
| | 53 | #endif /* _POWERPC_PMC_H */ |
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