1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright 2014, Michael Ellerman, IBM Corp. 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun #ifndef _SELFTESTS_POWERPC_PMU_EBB_EBB_H 7*4882a593Smuzhiyun #define _SELFTESTS_POWERPC_PMU_EBB_EBB_H 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include "../event.h" 10*4882a593Smuzhiyun #include "../lib.h" 11*4882a593Smuzhiyun #include "trace.h" 12*4882a593Smuzhiyun #include "reg.h" 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun #define PMC_INDEX(pmc) ((pmc)-1) 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun #define NUM_PMC_VALUES 128 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun struct ebb_state 19*4882a593Smuzhiyun { 20*4882a593Smuzhiyun struct { 21*4882a593Smuzhiyun u64 pmc_count[6]; 22*4882a593Smuzhiyun volatile int ebb_count; 23*4882a593Smuzhiyun int spurious; 24*4882a593Smuzhiyun int negative; 25*4882a593Smuzhiyun int no_overflow; 26*4882a593Smuzhiyun } stats; 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun bool pmc_enable[6]; 29*4882a593Smuzhiyun struct trace_buffer *trace; 30*4882a593Smuzhiyun }; 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun extern struct ebb_state ebb_state; 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun #define COUNTER_OVERFLOW 0x80000000ull 35*4882a593Smuzhiyun pmc_sample_period(uint32_t value)36*4882a593Smuzhiyunstatic inline uint32_t pmc_sample_period(uint32_t value) 37*4882a593Smuzhiyun { 38*4882a593Smuzhiyun return COUNTER_OVERFLOW - value; 39*4882a593Smuzhiyun } 40*4882a593Smuzhiyun ebb_enable_pmc_counting(int pmc)41*4882a593Smuzhiyunstatic inline void ebb_enable_pmc_counting(int pmc) 42*4882a593Smuzhiyun { 43*4882a593Smuzhiyun ebb_state.pmc_enable[PMC_INDEX(pmc)] = true; 44*4882a593Smuzhiyun } 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun bool ebb_check_count(int pmc, u64 sample_period, int fudge); 47*4882a593Smuzhiyun void event_leader_ebb_init(struct event *e); 48*4882a593Smuzhiyun void event_ebb_init(struct event *e); 49*4882a593Smuzhiyun void event_bhrb_init(struct event *e, unsigned ifm); 50*4882a593Smuzhiyun void setup_ebb_handler(void (*callee)(void)); 51*4882a593Smuzhiyun void standard_ebb_callee(void); 52*4882a593Smuzhiyun int ebb_event_enable(struct event *e); 53*4882a593Smuzhiyun void ebb_global_enable(void); 54*4882a593Smuzhiyun void ebb_global_disable(void); 55*4882a593Smuzhiyun bool ebb_is_supported(void); 56*4882a593Smuzhiyun void ebb_freeze_pmcs(void); 57*4882a593Smuzhiyun void ebb_unfreeze_pmcs(void); 58*4882a593Smuzhiyun void event_ebb_init(struct event *e); 59*4882a593Smuzhiyun void event_leader_ebb_init(struct event *e); 60*4882a593Smuzhiyun int count_pmc(int pmc, uint32_t sample_period); 61*4882a593Smuzhiyun void dump_ebb_state(void); 62*4882a593Smuzhiyun void dump_summary_ebb_state(void); 63*4882a593Smuzhiyun void dump_ebb_hw_state(void); 64*4882a593Smuzhiyun void clear_ebb_stats(void); 65*4882a593Smuzhiyun void write_pmc(int pmc, u64 value); 66*4882a593Smuzhiyun u64 read_pmc(int pmc); 67*4882a593Smuzhiyun void reset_ebb_with_clear_mask(unsigned long mmcr0_clear_mask); 68*4882a593Smuzhiyun void reset_ebb(void); 69*4882a593Smuzhiyun int ebb_check_mmcr0(void); 70*4882a593Smuzhiyun 71*4882a593Smuzhiyun extern u64 sample_period; 72*4882a593Smuzhiyun 73*4882a593Smuzhiyun int core_busy_loop(void); 74*4882a593Smuzhiyun int ebb_child(union pipe read_pipe, union pipe write_pipe); 75*4882a593Smuzhiyun int catch_sigill(void (*func)(void)); 76*4882a593Smuzhiyun void write_pmc1(void); 77*4882a593Smuzhiyun 78*4882a593Smuzhiyun #endif /* _SELFTESTS_POWERPC_PMU_EBB_EBB_H */ 79