1/*- 2 * Copyright (c) 2003-2005,2008 Joseph Koshy 3 * Copyright (c) 2007 The FreeBSD Foundation 4 * All rights reserved. 5 * 6 * Portions of this software were developed by A. Joseph Koshy under 7 * sponsorship from the FreeBSD Foundation and Google, 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 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD: stable/11/sys/i386/include/pmc_mdep.h 339769 2018-10-26 06:12:56Z mmacy $ 31 */ 32 33#ifndef _MACHINE_PMC_MDEP_H 34#define _MACHINE_PMC_MDEP_H 1 35 36#ifdef _KERNEL 37struct pmc_mdep; 38#endif 39 40/* 41 * On the i386 platform we support the following PMCs. 42 * 43 * TSC The timestamp counter 44 * K7 AMD Athlon XP/MP and other 32 bit processors. 45 * K8 AMD Athlon64 and Opteron PMCs in 32 bit mode. 46 * PIV Intel P4/HTT and P4/EMT64 47 * PPRO Intel Pentium Pro, Pentium-II, Pentium-III, Celeron and 48 * Pentium-M processors 49 * PENTIUM Intel Pentium MMX. 50 * IAP Intel Core/Core2/Atom programmable PMCs. 51 * IAF Intel fixed-function PMCs. 52 * UCP Intel Uncore programmable PMCs. 53 * UCF Intel Uncore fixed-function PMCs. 54 */ 55 56#include <dev/hwpmc/hwpmc_amd.h> /* K7 and K8 */ 57#include <dev/hwpmc/hwpmc_core.h> 58#include <dev/hwpmc/hwpmc_piv.h> 59#include <dev/hwpmc/hwpmc_ppro.h> 60#include <dev/hwpmc/hwpmc_pentium.h> 61#include <dev/hwpmc/hwpmc_tsc.h> 62#include <dev/hwpmc/hwpmc_uncore.h> 63 64/* 65 * Intel processors implementing V2 and later of the Intel performance 66 * measurement architecture have PMCs of the following classes: TSC, 67 * IAF, IAP, UCF and UCP. 68 */ 69#define PMC_MDEP_CLASS_INDEX_TSC 1 70#define PMC_MDEP_CLASS_INDEX_K7 2 71#define PMC_MDEP_CLASS_INDEX_K8 2 72#define PMC_MDEP_CLASS_INDEX_F17H 2 73#define PMC_MDEP_CLASS_INDEX_P4 2 74#define PMC_MDEP_CLASS_INDEX_P5 2 75#define PMC_MDEP_CLASS_INDEX_P6 2 76#define PMC_MDEP_CLASS_INDEX_IAP 2 77#define PMC_MDEP_CLASS_INDEX_IAF 3 78#define PMC_MDEP_CLASS_INDEX_UCP 4 79#define PMC_MDEP_CLASS_INDEX_UCF 5 80 81/* 82 * Architecture specific extensions to <sys/pmc.h> structures. 83 */ 84 85union pmc_md_op_pmcallocate { 86 struct pmc_md_amd_op_pmcallocate pm_amd; 87 struct pmc_md_iaf_op_pmcallocate pm_iaf; 88 struct pmc_md_iap_op_pmcallocate pm_iap; 89 struct pmc_md_ucf_op_pmcallocate pm_ucf; 90 struct pmc_md_ucp_op_pmcallocate pm_ucp; 91 struct pmc_md_p4_op_pmcallocate pm_p4; 92 struct pmc_md_pentium_op_pmcallocate pm_pentium; 93 struct pmc_md_ppro_op_pmcallocate pm_ppro; 94 uint64_t __pad[4]; 95}; 96 97/* Logging */ 98#define PMCLOG_READADDR PMCLOG_READ32 99#define PMCLOG_EMITADDR PMCLOG_EMIT32 100 101#ifdef _KERNEL 102 103/* MD extension for 'struct pmc' */ 104union pmc_md_pmc { 105 struct pmc_md_amd_pmc pm_amd; 106 struct pmc_md_iaf_pmc pm_iaf; 107 struct pmc_md_iap_pmc pm_iap; 108 struct pmc_md_ucf_pmc pm_ucf; 109 struct pmc_md_ucp_pmc pm_ucp; 110 struct pmc_md_p4_pmc pm_p4; 111 struct pmc_md_pentium_pmc pm_pentium; 112 struct pmc_md_ppro_pmc pm_ppro; 113}; 114 115struct pmc; 116struct pmc_mdep; 117 118#define PMC_TRAPFRAME_TO_PC(TF) ((TF)->tf_eip) 119#define PMC_TRAPFRAME_TO_FP(TF) ((TF)->tf_ebp) 120 121/* 122 * The layout of the stack frame on entry into the NMI handler depends on 123 * whether a privilege level change (and consequent stack switch) was 124 * required for entry. 125 * 126 * When processing an interrupt when in user mode, the processor switches 127 * stacks, and saves the user mode stack pointer on the kernel stack. The 128 * user mode stack pointer is then available to the interrupt handler 129 * at frame->tf_esp. 130 * 131 * When processing an interrupt while in kernel mode, the processor 132 * continues to use the existing (kernel) stack. Therefore we determine 133 * the stack pointer for the interrupted kernel procedure by adding an 134 * offset to the current frame pointer. 135 */ 136 137#define PMC_TRAPFRAME_TO_USER_SP(TF) ((TF)->tf_esp) 138#define PMC_TRAPFRAME_TO_KERNEL_SP(TF) ((uintptr_t) &((TF)->tf_esp)) 139 140#define PMC_IN_KERNEL_STACK(S,START,END) \ 141 ((S) >= (START) && (S) < (END)) 142#define PMC_IN_KERNEL(va) INKERNEL(va) 143 144#define PMC_IN_USERSPACE(va) ((va) <= VM_MAXUSER_ADDRESS) 145 146#define PMC_IN_TRAP_HANDLER(PC) \ 147 ((PC) >= (uintptr_t) start_exceptions && \ 148 (PC) < (uintptr_t) end_exceptions) 149 150#define PMC_AT_FUNCTION_PROLOGUE_PUSH_BP(I) \ 151 (((I) & 0x00ffffff) == 0xe58955) /* pushl %ebp; movl %esp,%ebp */ 152#define PMC_AT_FUNCTION_PROLOGUE_MOV_SP_BP(I) \ 153 (((I) & 0x0000ffff) == 0xe589) /* movl %esp,%ebp */ 154#define PMC_AT_FUNCTION_EPILOGUE_RET(I) \ 155 (((I) & 0xFF) == 0xC3) /* ret */ 156 157/* Build a fake kernel trapframe from current instruction pointer. */ 158#define PMC_FAKE_TRAPFRAME(TF) \ 159 do { \ 160 (TF)->tf_cs = 0; (TF)->tf_eflags = 0; \ 161 __asm __volatile("movl %%ebp,%0" : "=r" ((TF)->tf_ebp)); \ 162 __asm __volatile("movl %%esp,%0" : "=r" ((TF)->tf_esp)); \ 163 __asm __volatile("call 1f \n\t1: pop %0" : "=r"((TF)->tf_eip)); \ 164 } while (0) 165 166/* 167 * Prototypes 168 */ 169 170void start_exceptions(void), end_exceptions(void); 171 172struct pmc_mdep *pmc_amd_initialize(void); 173void pmc_amd_finalize(struct pmc_mdep *_md); 174struct pmc_mdep *pmc_intel_initialize(void); 175void pmc_intel_finalize(struct pmc_mdep *_md); 176 177#endif /* _KERNEL */ 178#endif /* _MACHINE_PMC_MDEP_H */ 179