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 */
54
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