2 * Copyright 2014, Michael Ellerman, IBM Corp.
3 * Licensed under GPLv2.
6 #ifndef _SELFTESTS_POWERPC_PMU_EBB_EBB_H
7 #define _SELFTESTS_POWERPC_PMU_EBB_EBB_H
14 #define PMC_INDEX(pmc) ((pmc)-1)
16 #define NUM_PMC_VALUES 128
22 volatile int ebb_count
;
29 struct trace_buffer
*trace
;
32 extern struct ebb_state ebb_state
;
34 #define COUNTER_OVERFLOW 0x80000000ull
36 static inline uint32_t pmc_sample_period(uint32_t value
)
38 return COUNTER_OVERFLOW
- value
;
41 static inline void ebb_enable_pmc_counting(int pmc
)
43 ebb_state
.pmc_enable
[PMC_INDEX(pmc
)] = true;
46 bool ebb_check_count(int pmc
, u64 sample_period
, int fudge
);
47 void event_leader_ebb_init(struct event
*e
);
48 void event_ebb_init(struct event
*e
);
49 void event_bhrb_init(struct event
*e
, unsigned ifm
);
50 void setup_ebb_handler(void (*callee
)(void));
51 void standard_ebb_callee(void);
52 int ebb_event_enable(struct event
*e
);
53 void ebb_global_enable(void);
54 void ebb_global_disable(void);
55 bool ebb_is_supported(void);
56 void ebb_freeze_pmcs(void);
57 void ebb_unfreeze_pmcs(void);
58 void event_ebb_init(struct event
*e
);
59 void event_leader_ebb_init(struct event
*e
);
60 int count_pmc(int pmc
, uint32_t sample_period
);
61 void dump_ebb_state(void);
62 void dump_summary_ebb_state(void);
63 void dump_ebb_hw_state(void);
64 void clear_ebb_stats(void);
65 void write_pmc(int pmc
, u64 value
);
66 u64
read_pmc(int pmc
);
67 void reset_ebb_with_clear_mask(unsigned long mmcr0_clear_mask
);
69 int ebb_check_mmcr0(void);
71 extern u64 sample_period
;
73 int core_busy_loop(void);
74 int ebb_child(union pipe read_pipe
, union pipe write_pipe
);
75 int catch_sigill(void (*func
)(void));
76 void write_pmc1(void);
78 #endif /* _SELFTESTS_POWERPC_PMU_EBB_EBB_H */
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