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3752e453 ME |
1 | /* |
2 | * Copyright 2014, Michael Ellerman, IBM Corp. | |
3 | * Licensed under GPLv2. | |
4 | */ | |
5 | ||
6 | #ifndef _SELFTESTS_POWERPC_PMU_EBB_EBB_H | |
7 | #define _SELFTESTS_POWERPC_PMU_EBB_EBB_H | |
8 | ||
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 128 | |
17 | ||
18 | struct ebb_state | |
19 | { | |
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 | ||
32 | extern struct ebb_state ebb_state; | |
33 | ||
34 | #define COUNTER_OVERFLOW 0x80000000ull | |
35 | ||
36 | static inline uint32_t pmc_sample_period(uint32_t value) | |
37 | { | |
38 | return COUNTER_OVERFLOW - value; | |
39 | } | |
40 | ||
41 | static inline void ebb_enable_pmc_counting(int pmc) | |
42 | { | |
43 | ebb_state.pmc_enable[PMC_INDEX(pmc)] = true; | |
44 | } | |
45 | ||
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); | |
39fcfb91 | 55 | bool ebb_is_supported(void); |
3752e453 ME |
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); | |
68 | void reset_ebb(void); | |
69 | int ebb_check_mmcr0(void); | |
70 | ||
71 | extern u64 sample_period; | |
72 | ||
73 | int core_busy_loop(void); | |
3752e453 ME |
74 | int ebb_child(union pipe read_pipe, union pipe write_pipe); |
75 | int catch_sigill(void (*func)(void)); | |
76 | void write_pmc1(void); | |
77 | ||
78 | #endif /* _SELFTESTS_POWERPC_PMU_EBB_EBB_H */ |