| /* |
| * Copyright 2014, Michael Ellerman, IBM Corp. |
| * Licensed under GPLv2. |
| */ |
| |
| #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); |
| 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 */ |