1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * pmc.h 4*4882a593Smuzhiyun * Copyright (C) 2004 David Gibson, IBM Corporation 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun #ifndef _POWERPC_PMC_H 7*4882a593Smuzhiyun #define _POWERPC_PMC_H 8*4882a593Smuzhiyun #ifdef __KERNEL__ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #include <asm/ptrace.h> 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun typedef void (*perf_irq_t)(struct pt_regs *); 13*4882a593Smuzhiyun extern perf_irq_t perf_irq; 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun int reserve_pmc_hardware(perf_irq_t new_perf_irq); 16*4882a593Smuzhiyun void release_pmc_hardware(void); 17*4882a593Smuzhiyun void ppc_enable_pmcs(void); 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun #ifdef CONFIG_PPC_BOOK3S_64 20*4882a593Smuzhiyun #include <asm/lppaca.h> 21*4882a593Smuzhiyun #include <asm/firmware.h> 22*4882a593Smuzhiyun ppc_set_pmu_inuse(int inuse)23*4882a593Smuzhiyunstatic inline void ppc_set_pmu_inuse(int inuse) 24*4882a593Smuzhiyun { 25*4882a593Smuzhiyun #if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE) 26*4882a593Smuzhiyun if (firmware_has_feature(FW_FEATURE_LPAR)) { 27*4882a593Smuzhiyun #ifdef CONFIG_PPC_PSERIES 28*4882a593Smuzhiyun get_lppaca()->pmcregs_in_use = inuse; 29*4882a593Smuzhiyun #endif 30*4882a593Smuzhiyun } 31*4882a593Smuzhiyun #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 32*4882a593Smuzhiyun get_paca()->pmcregs_in_use = inuse; 33*4882a593Smuzhiyun #endif 34*4882a593Smuzhiyun #endif 35*4882a593Smuzhiyun } 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE ppc_get_pmu_inuse(void)38*4882a593Smuzhiyunstatic inline int ppc_get_pmu_inuse(void) 39*4882a593Smuzhiyun { 40*4882a593Smuzhiyun return get_paca()->pmcregs_in_use; 41*4882a593Smuzhiyun } 42*4882a593Smuzhiyun #endif 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun extern void power4_enable_pmcs(void); 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun #else /* CONFIG_PPC64 */ 47*4882a593Smuzhiyun ppc_set_pmu_inuse(int inuse)48*4882a593Smuzhiyunstatic inline void ppc_set_pmu_inuse(int inuse) { } 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun #endif 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun #endif /* __KERNEL__ */ 53*4882a593Smuzhiyun #endif /* _POWERPC_PMC_H */ 54