1 /* $NetBSD: pmc.h,v 1.5 2005/12/11 12:25:20 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Allen Briggs for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #ifndef _SYS_PMC_H_ 39 #define _SYS_PMC_H_ 40 41 struct pmc_counter_cfg { 42 pmc_evid_t event_id; /* What event to configure */ 43 pmc_ctr_t reset_value; /* Value to set counter to */ 44 uint32_t flags; /* PMC_FLAG_* */ 45 }; 46 47 #if defined(_KERNEL) 48 49 /* 50 * The following functions are defined in machine/pmc.h as either 51 * functions or macros. 52 * 53 * int pmc_get_num_counters(void); 54 * int pmc_get_counter_type(int ctr); 55 * 56 * void pmc_save_context(struct proc *p); 57 * void pmc_restore_context(struct proc *p); 58 * void pmc_process_exit(struct proc *p); 59 * 60 * int pmc_enable_counter(struct proc *p, int ctr); 61 * int pmc_disable_counter(struct proc *p, int ctr); 62 * int pmc_counter_isrunning(struct proc *p, int ctr); 63 * int pmc_counter_isconfigured(struct proc *p, int ctr); 64 * 65 * int pmc_configure_counter(struct proc *p, int ctr, pmc_counter_cfg *cfg); 66 * 67 * int pmc_get_counter_value(struct proc *p, int ctr, int flags, 68 * uint64_t *pval); 69 * 70 * int pmc_accumulate(struct proc *p_parent, struct proc *p_exiting); 71 * 72 * int pmc_alloc_kernel_counter(int ctr, struct pmc_counter_cfg *cfg); 73 * int pmc_free_kernel_counter(int ctr); 74 * 75 * int pmc_start_profiling(int ctr, struct pmc_counter_cfg *cfg); 76 * int pmc_stop_profiling(int ctr); 77 * 78 * int PMC_ENABLED(struct proc *p); 79 */ 80 81 #define PMC_VALUE_FLAGS_CHILDREN 0x00000001 82 83 #endif /* _KERNEL */ 84 85 #include <machine/pmc.h> 86 87 #define PMC_OP_START 1 88 #define PMC_OP_STOP 2 89 #define PMC_OP_CONFIGURE 3 90 #define PMC_OP_PROFSTART 4 91 #define PMC_OP_PROFSTOP 5 92 int pmc_control(int ctr, int operation, void *args); 93 94 #define PMC_INFO_NCOUNTERS 1 95 #define PMC_INFO_CPUCTR_TYPE 2 96 #define PMC_INFO_COUNTER_VALUE 3 97 #define PMC_INFO_ACCUMULATED_COUNTER_VALUE 4 98 int pmc_get_info(int ctr, int request, void *data); 99 100 #endif /* !_SYS_PMC_H_ */ 101