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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Copyright 2014, Michael Ellerman, IBM Corp.4 */5 6#ifndef _SELFTESTS_POWERPC_PMU_EBB_EBB_H7#define _SELFTESTS_POWERPC_PMU_EBB_EBB_H8 9#include "../event.h"10#include "../lib.h"11#include "trace.h"12#include "reg.h"13 14#define PMC_INDEX(pmc) ((pmc)-1)15 16#define NUM_PMC_VALUES 12817 18struct ebb_state19{20 struct {21 u64 pmc_count[6];22 volatile int ebb_count;23 int spurious;24 int negative;25 int no_overflow;26 } stats;27 28 bool pmc_enable[6];29 struct trace_buffer *trace;30};31 32extern struct ebb_state ebb_state;33 34#define COUNTER_OVERFLOW 0x80000000ull35 36static inline uint32_t pmc_sample_period(uint32_t value)37{38 return COUNTER_OVERFLOW - value;39}40 41static inline void ebb_enable_pmc_counting(int pmc)42{43 ebb_state.pmc_enable[PMC_INDEX(pmc)] = true;44}45 46bool ebb_check_count(int pmc, u64 sample_period, int fudge);47void event_leader_ebb_init(struct event *e);48void event_ebb_init(struct event *e);49void event_bhrb_init(struct event *e, unsigned ifm);50void setup_ebb_handler(void (*callee)(void));51void standard_ebb_callee(void);52int ebb_event_enable(struct event *e);53void ebb_global_enable(void);54void ebb_global_disable(void);55bool ebb_is_supported(void);56void ebb_freeze_pmcs(void);57void ebb_unfreeze_pmcs(void);58int count_pmc(int pmc, uint32_t sample_period);59void dump_ebb_state(void);60void dump_summary_ebb_state(void);61void dump_ebb_hw_state(void);62void clear_ebb_stats(void);63void write_pmc(int pmc, u64 value);64u64 read_pmc(int pmc);65void reset_ebb_with_clear_mask(unsigned long mmcr0_clear_mask);66void reset_ebb(void);67int ebb_check_mmcr0(void);68 69extern u64 sample_period;70 71int core_busy_loop(void);72int ebb_child(union pipe read_pipe, union pipe write_pipe);73int catch_sigill(void (*func)(void));74void write_pmc1(void);75 76#endif /* _SELFTESTS_POWERPC_PMU_EBB_EBB_H */77