18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-only */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * Copyright 2014, Michael Ellerman, IBM Corp. 48c2ecf20Sopenharmony_ci */ 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci#ifndef _SELFTESTS_POWERPC_PMU_EBB_EBB_H 78c2ecf20Sopenharmony_ci#define _SELFTESTS_POWERPC_PMU_EBB_EBB_H 88c2ecf20Sopenharmony_ci 98c2ecf20Sopenharmony_ci#include "../event.h" 108c2ecf20Sopenharmony_ci#include "../lib.h" 118c2ecf20Sopenharmony_ci#include "trace.h" 128c2ecf20Sopenharmony_ci#include "reg.h" 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_ci#define PMC_INDEX(pmc) ((pmc)-1) 158c2ecf20Sopenharmony_ci 168c2ecf20Sopenharmony_ci#define NUM_PMC_VALUES 128 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_cistruct ebb_state 198c2ecf20Sopenharmony_ci{ 208c2ecf20Sopenharmony_ci struct { 218c2ecf20Sopenharmony_ci u64 pmc_count[6]; 228c2ecf20Sopenharmony_ci volatile int ebb_count; 238c2ecf20Sopenharmony_ci int spurious; 248c2ecf20Sopenharmony_ci int negative; 258c2ecf20Sopenharmony_ci int no_overflow; 268c2ecf20Sopenharmony_ci } stats; 278c2ecf20Sopenharmony_ci 288c2ecf20Sopenharmony_ci bool pmc_enable[6]; 298c2ecf20Sopenharmony_ci struct trace_buffer *trace; 308c2ecf20Sopenharmony_ci}; 318c2ecf20Sopenharmony_ci 328c2ecf20Sopenharmony_ciextern struct ebb_state ebb_state; 338c2ecf20Sopenharmony_ci 348c2ecf20Sopenharmony_ci#define COUNTER_OVERFLOW 0x80000000ull 358c2ecf20Sopenharmony_ci 368c2ecf20Sopenharmony_cistatic inline uint32_t pmc_sample_period(uint32_t value) 378c2ecf20Sopenharmony_ci{ 388c2ecf20Sopenharmony_ci return COUNTER_OVERFLOW - value; 398c2ecf20Sopenharmony_ci} 408c2ecf20Sopenharmony_ci 418c2ecf20Sopenharmony_cistatic inline void ebb_enable_pmc_counting(int pmc) 428c2ecf20Sopenharmony_ci{ 438c2ecf20Sopenharmony_ci ebb_state.pmc_enable[PMC_INDEX(pmc)] = true; 448c2ecf20Sopenharmony_ci} 458c2ecf20Sopenharmony_ci 468c2ecf20Sopenharmony_cibool ebb_check_count(int pmc, u64 sample_period, int fudge); 478c2ecf20Sopenharmony_civoid event_leader_ebb_init(struct event *e); 488c2ecf20Sopenharmony_civoid event_ebb_init(struct event *e); 498c2ecf20Sopenharmony_civoid event_bhrb_init(struct event *e, unsigned ifm); 508c2ecf20Sopenharmony_civoid setup_ebb_handler(void (*callee)(void)); 518c2ecf20Sopenharmony_civoid standard_ebb_callee(void); 528c2ecf20Sopenharmony_ciint ebb_event_enable(struct event *e); 538c2ecf20Sopenharmony_civoid ebb_global_enable(void); 548c2ecf20Sopenharmony_civoid ebb_global_disable(void); 558c2ecf20Sopenharmony_cibool ebb_is_supported(void); 568c2ecf20Sopenharmony_civoid ebb_freeze_pmcs(void); 578c2ecf20Sopenharmony_civoid ebb_unfreeze_pmcs(void); 588c2ecf20Sopenharmony_civoid event_ebb_init(struct event *e); 598c2ecf20Sopenharmony_civoid event_leader_ebb_init(struct event *e); 608c2ecf20Sopenharmony_ciint count_pmc(int pmc, uint32_t sample_period); 618c2ecf20Sopenharmony_civoid dump_ebb_state(void); 628c2ecf20Sopenharmony_civoid dump_summary_ebb_state(void); 638c2ecf20Sopenharmony_civoid dump_ebb_hw_state(void); 648c2ecf20Sopenharmony_civoid clear_ebb_stats(void); 658c2ecf20Sopenharmony_civoid write_pmc(int pmc, u64 value); 668c2ecf20Sopenharmony_ciu64 read_pmc(int pmc); 678c2ecf20Sopenharmony_civoid reset_ebb_with_clear_mask(unsigned long mmcr0_clear_mask); 688c2ecf20Sopenharmony_civoid reset_ebb(void); 698c2ecf20Sopenharmony_ciint ebb_check_mmcr0(void); 708c2ecf20Sopenharmony_ci 718c2ecf20Sopenharmony_ciextern u64 sample_period; 728c2ecf20Sopenharmony_ci 738c2ecf20Sopenharmony_ciint core_busy_loop(void); 748c2ecf20Sopenharmony_ciint ebb_child(union pipe read_pipe, union pipe write_pipe); 758c2ecf20Sopenharmony_ciint catch_sigill(void (*func)(void)); 768c2ecf20Sopenharmony_civoid write_pmc1(void); 778c2ecf20Sopenharmony_ci 788c2ecf20Sopenharmony_ci#endif /* _SELFTESTS_POWERPC_PMU_EBB_EBB_H */ 79