1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2003-2008 Joseph Koshy 5 * Copyright (c) 2007 The FreeBSD Foundation 6 * All rights reserved. 7 * 8 * Portions of this software were developed by A. Joseph Koshy under 9 * sponsorship from the FreeBSD Foundation and Google, Inc. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD$ 33 */ 34 35 /* Machine dependent interfaces */ 36 37 #ifndef _MACHINE_PMC_MDEP_H 38 #define _MACHINE_PMC_MDEP_H 1 39 40 #ifdef _KERNEL 41 struct pmc_mdep; 42 #endif 43 44 #include <dev/hwpmc/hwpmc_amd.h> 45 #include <dev/hwpmc/hwpmc_core.h> 46 #include <dev/hwpmc/hwpmc_tsc.h> 47 #include <dev/hwpmc/hwpmc_uncore.h> 48 49 /* 50 * Intel processors implementing V2 and later of the Intel performance 51 * measurement architecture have PMCs of the following classes: TSC, 52 * IAF, IAP, UCF and UCP. 53 */ 54 #define PMC_MDEP_CLASS_INDEX_TSC 1 55 #define PMC_MDEP_CLASS_INDEX_K8 2 56 #define PMC_MDEP_CLASS_INDEX_P4 2 57 #define PMC_MDEP_CLASS_INDEX_IAP 2 58 #define PMC_MDEP_CLASS_INDEX_IAF 3 59 #define PMC_MDEP_CLASS_INDEX_UCP 4 60 #define PMC_MDEP_CLASS_INDEX_UCF 5 61 62 /* 63 * On the amd64 platform we support the following PMCs. 64 * 65 * TSC The timestamp counter 66 * K8 AMD Athlon64 and Opteron PMCs in 64 bit mode. 67 * PIV Intel P4/HTT and P4/EMT64 68 * IAP Intel Core/Core2/Atom CPUs in 64 bits mode. 69 * IAF Intel fixed-function PMCs in Core2 and later CPUs. 70 * UCP Intel Uncore programmable PMCs. 71 * UCF Intel Uncore fixed-function PMCs. 72 */ 73 74 union pmc_md_op_pmcallocate { 75 struct pmc_md_amd_op_pmcallocate pm_amd; 76 struct pmc_md_iap_op_pmcallocate pm_iap; 77 struct pmc_md_ucf_op_pmcallocate pm_ucf; 78 struct pmc_md_ucp_op_pmcallocate pm_ucp; 79 uint64_t __pad[4]; 80 }; 81 82 /* Logging */ 83 #define PMCLOG_READADDR PMCLOG_READ64 84 #define PMCLOG_EMITADDR PMCLOG_EMIT64 85 86 #ifdef _KERNEL 87 88 union pmc_md_pmc { 89 struct pmc_md_amd_pmc pm_amd; 90 struct pmc_md_iaf_pmc pm_iaf; 91 struct pmc_md_iap_pmc pm_iap; 92 struct pmc_md_ucf_pmc pm_ucf; 93 struct pmc_md_ucp_pmc pm_ucp; 94 }; 95 96 #define PMC_TRAPFRAME_TO_PC(TF) ((TF)->tf_rip) 97 #define PMC_TRAPFRAME_TO_FP(TF) ((TF)->tf_rbp) 98 #define PMC_TRAPFRAME_TO_USER_SP(TF) ((TF)->tf_rsp) 99 #define PMC_TRAPFRAME_TO_KERNEL_SP(TF) ((TF)->tf_rsp) 100 101 #define PMC_AT_FUNCTION_PROLOGUE_PUSH_BP(I) \ 102 (((I) & 0xffffffff) == 0xe5894855) /* pushq %rbp; movq %rsp,%rbp */ 103 #define PMC_AT_FUNCTION_PROLOGUE_MOV_SP_BP(I) \ 104 (((I) & 0x00ffffff) == 0x00e58948) /* movq %rsp,%rbp */ 105 #define PMC_AT_FUNCTION_EPILOGUE_RET(I) \ 106 (((I) & 0xFF) == 0xC3) /* ret */ 107 108 #define PMC_IN_TRAP_HANDLER(PC) \ 109 ((PC) >= (uintptr_t) start_exceptions && \ 110 (PC) < (uintptr_t) end_exceptions) 111 112 #define PMC_IN_KERNEL_STACK(va) kstack_contains(curthread, (va), sizeof(va)) 113 #define PMC_IN_KERNEL(va) INKERNEL(va) 114 #define PMC_IN_USERSPACE(va) ((va) <= VM_MAXUSER_ADDRESS) 115 116 /* Build a fake kernel trapframe from current instruction pointer. */ 117 #define PMC_FAKE_TRAPFRAME(TF) \ 118 do { \ 119 (TF)->tf_cs = 0; (TF)->tf_rflags = 0; \ 120 __asm __volatile("movq %%rbp,%0" : "=r" ((TF)->tf_rbp)); \ 121 __asm __volatile("movq %%rsp,%0" : "=r" ((TF)->tf_rsp)); \ 122 __asm __volatile("call 1f \n\t1: pop %0" : "=r"((TF)->tf_rip)); \ 123 } while (0) 124 125 /* 126 * Prototypes 127 */ 128 129 void start_exceptions(void), end_exceptions(void); 130 131 struct pmc_mdep *pmc_amd_initialize(void); 132 void pmc_amd_finalize(struct pmc_mdep *_md); 133 struct pmc_mdep *pmc_intel_initialize(void); 134 void pmc_intel_finalize(struct pmc_mdep *_md); 135 136 #endif /* _KERNEL */ 137 #endif /* _MACHINE_PMC_MDEP_H */ 138