Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/osfmk/ppc/hw_perfmon.h
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1 /* 2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * The contents of this file constitute Original Code as defined in and 7 * are subject to the Apple Public Source License Version 1.1 (the 8 * "License"). You may not use this file except in compliance with the 9 * License. Please obtain a copy of the License at 10 * http://www.apple.com/publicsource and read it before using this file. 11 * 12 * This Original Code and all software distributed under the License are 13 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER 14 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 15 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the 17 * License for the specific language governing rights and limitations 18 * under the License. 19 * 20 * @APPLE_LICENSE_HEADER_END@ 21 */ 22 #ifndef _HW_PERFMON_H_ 23 #define _HW_PERFMON_H_ 24 25 #ifndef __ppc__ 26 #error This file is only useful on PowerPC. 27 #endif 28 29 #define MAX_CPUPMC_COUNT 8 30 31 #define PMC_1 0 32 #define PMC_2 1 33 #define PMC_3 2 34 #define PMC_4 3 35 #define PMC_5 4 36 #define PMC_6 5 37 #define PMC_7 6 38 #define PMC_8 7 39 40 /* these actions can be combined and simultaneously performed with a single call to perfmon_control() */ 41 typedef enum { 42 PPC_PERFMON_CLEAR_COUNTERS = 0x0002, 43 PPC_PERFMON_START_COUNTERS = 0x0004, 44 PPC_PERFMON_STOP_COUNTERS = 0x0008, 45 PPC_PERFMON_READ_COUNTERS = 0x0010, 46 PPC_PERFMON_WRITE_COUNTERS = 0x0020 47 } perfmon_multi_action_t; 48 49 /* these actions can not be combined and each requires a separate call to perfmon_control() */ 50 typedef enum { 51 PPC_PERFMON_ENABLE = 0x00010000, 52 PPC_PERFMON_DISABLE = 0x00020000, 53 PPC_PERFMON_SET_EVENT = 0x00030000, 54 PPC_PERFMON_SET_THRESHOLD = 0x00040000, 55 PPC_PERFMON_SET_TBSEL = 0x00050000, 56 PPC_PERFMON_SET_EVENT_FUNC = 0x00060000, 57 PPC_PERFMON_ENABLE_PMI_BRKPT = 0x00070000 58 } perfmon_single_action_t; 59 60 /* used to select byte lane and speculative events (currently 970 only) */ 61 typedef enum { /* SPECSEL[0:1] TD_CP_DBGxSEL[0:1] TTM3SEL[0:1] TTM1SEL[0:1] TTM0SEL[0:1] */ 62 PPC_PERFMON_FUNC_FPU = 0, /* 00 00 00 00 00 */ 63 PPC_PERFMON_FUNC_ISU = 1, /* 00 00 00 00 01 */ 64 PPC_PERFMON_FUNC_IFU = 2, /* 00 00 00 00 10 */ 65 PPC_PERFMON_FUNC_VMX = 3, /* 00 00 00 00 11 */ 66 PPC_PERFMON_FUNC_IDU = 64, /* 00 01 00 00 00 */ 67 PPC_PERFMON_FUNC_GPS = 76, /* 00 01 00 11 00 */ 68 PPC_PERFMON_FUNC_LSU0 = 128, /* 00 10 00 00 00 */ 69 PPC_PERFMON_FUNC_LSU1A = 192, /* 00 11 00 00 00 */ 70 PPC_PERFMON_FUNC_LSU1B = 240, /* 00 11 11 00 00 */ 71 PPC_PERFMON_FUNC_SPECA = 256, /* 01 00 00 00 00 */ 72 PPC_PERFMON_FUNC_SPECB = 512, /* 10 00 00 00 00 */ 73 PPC_PERFMON_FUNC_SPECC = 768, /* 11 00 00 00 00 */ 74 } perfmon_functional_unit_t; 75 76 #ifdef MACH_KERNEL_PRIVATE 77 int perfmon_acquire_facility(task_t task); 78 int perfmon_release_facility(task_t task); 79 80 extern int perfmon_disable(thread_t thr_act); 81 extern int perfmon_init(void); 82 extern int perfmon_control(struct savearea *save); 83 extern int perfmon_handle_pmi(struct savearea *ssp); 84 85 /* perfmonFlags */ 86 #define PERFMONFLAG_BREAKPOINT_FOR_PMI 0x1 87 88 #endif /* MACH_KERNEL_PRIVATE */ 89 90 /* 91 * From user space: 92 * 93 * int perfmon_control(thread_t thread, perfmon_action_t action, int pmc, u_int32_t val, u_int64_t *pmcs); 94 * 95 * r3: thread 96 * r4: action 97 * r5: pmc 98 * r6: event/threshold/tbsel/count 99 * r7: pointer to space for PMC counts: uint64_t[MAX_CPUPMC_COUNT] 100 * 101 * perfmon_control(thread, PPC_PERFMON_CLEAR_COUNTERS, 0, 0, NULL); 102 * perfmon_control(thread, PPC_PERFMON_START_COUNTERS, 0, 0, NULL); 103 * perfmon_control(thread, PPC_PERFMON_STOP_COUNTERS, 0, 0, NULL); 104 * perfmon_control(thread, PPC_PERFMON_READ_COUNTERS, 0, 0, uint64_t *pmcs); 105 * perfmon_control(thread, PPC_PERFMON_WRITE_COUNTERS, 0, 0, uint64_t *pmcs); 106 * perfmon_control(thread, PPC_PERFMON_ENABLE, 0, 0, NULL); 107 * perfmon_control(thread, PPC_PERFMON_DISABLE, 0, 0, NULL); 108 * perfmon_control(thread, PPC_PERFMON_SET_EVENT, int pmc, int event, NULL); 109 * perfmon_control(thread, PPC_PERFMON_SET_THRESHOLD, 0, int threshold, NULL); 110 * perfmon_control(thread, PPC_PERFMON_SET_TBSEL, 0, int tbsel, NULL); 111 * perfmon_control(thread, PPC_PERFMON_SET_EVENT_FUNC, 0, perfmon_functional_unit_t func, NULL); 112 * perfmon_control(thread, PPC_PERFMON_ENABLE_PMI_BRKPT, 0, boolean_t enable, NULL); 113 * 114 */ 115 116 #endif /* _HW_PERFMON_H_ */
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