/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright 2014, Michael Ellerman, IBM Corp. */ #ifndef _SELFTESTS_POWERPC_PMU_EBB_EBB_H #define _SELFTESTS_POWERPC_PMU_EBB_EBB_H #include "../event.h" #include "../lib.h" #include "trace.h" #include "reg.h" #define PMC_INDEX(pmc) ((pmc)-1) #define NUM_PMC_VALUES 128 struct ebb_state { struct { u64 pmc_count[6]; volatile int ebb_count; int spurious; int negative; int no_overflow; } stats; bool pmc_enable[6]; struct trace_buffer *trace; }; extern struct ebb_state ebb_state; #define COUNTER_OVERFLOW 0x80000000ull static inline uint32_t pmc_sample_period(uint32_t value) { return COUNTER_OVERFLOW - value; } static inline void ebb_enable_pmc_counting(int pmc) { ebb_state.pmc_enable[PMC_INDEX(pmc)] = true; } bool ebb_check_count(int pmc, u64 sample_period, int fudge); void event_leader_ebb_init(struct event *e); void event_ebb_init(struct event *e); void event_bhrb_init(struct event *e, unsigned ifm); void setup_ebb_handler(void (*callee)(void)); void standard_ebb_callee(void); int ebb_event_enable(struct event *e); void ebb_global_enable(void); void ebb_global_disable(void); bool ebb_is_supported(void); void ebb_freeze_pmcs(void); void ebb_unfreeze_pmcs(void); void event_ebb_init(struct event *e); void event_leader_ebb_init(struct event *e); int count_pmc(int pmc, uint32_t sample_period); void dump_ebb_state(void); void dump_summary_ebb_state(void); void dump_ebb_hw_state(void); void clear_ebb_stats(void); void write_pmc(int pmc, u64 value); u64 read_pmc(int pmc); void reset_ebb_with_clear_mask(unsigned long mmcr0_clear_mask); void reset_ebb(void); int ebb_check_mmcr0(void); extern u64 sample_period; int core_busy_loop(void); int ebb_child(union pipe read_pipe, union pipe write_pipe); int catch_sigill(void (*func)(void)); void write_pmc1(void); #endif /* _SELFTESTS_POWERPC_PMU_EBB_EBB_H */