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 33 /* Machine dependent interfaces */ 34 35 #ifndef _MACHINE_PMC_MDEP_H 36 #define _MACHINE_PMC_MDEP_H 1 37 38 #ifdef _KERNEL 39 struct pmc_mdep; 40 #endif 41 42 #include <dev/hwpmc/hwpmc_amd.h> 43 #include <dev/hwpmc/hwpmc_core.h> 44 #include <dev/hwpmc/hwpmc_tsc.h> 45 #include <dev/hwpmc/hwpmc_uncore.h> 46 47 /* 48 * Intel processors implementing V2 and later of the Intel performance 49 * measurement architecture have PMCs of the following classes: TSC, 50 * IAF, IAP, UCF and UCP. 51 */ 52 #define PMC_MDEP_CLASS_INDEX_TSC 1 53 #define PMC_MDEP_CLASS_INDEX_K8 2 54 #define PMC_MDEP_CLASS_INDEX_P4 2 55 #define PMC_MDEP_CLASS_INDEX_IAP 2 56 #define PMC_MDEP_CLASS_INDEX_IAF 3 57 #define PMC_MDEP_CLASS_INDEX_UCP 4 58 #define PMC_MDEP_CLASS_INDEX_UCF 5 59 60 /* 61 * On the amd64 platform we support the following PMCs. 62 * 63 * TSC The timestamp counter 64 * K8 AMD Athlon64 and Opteron PMCs in 64 bit mode. 65 * PIV Intel P4/HTT and P4/EMT64 66 * IAP Intel Core/Core2/Atom CPUs in 64 bits mode. 67 * IAF Intel fixed-function PMCs in Core2 and later CPUs. 68 * UCP Intel Uncore programmable PMCs. 69 * UCF Intel Uncore fixed-function PMCs. 70 */ 71 72 union pmc_md_op_pmcallocate { 73 struct pmc_md_amd_op_pmcallocate pm_amd; 74 struct pmc_md_iap_op_pmcallocate pm_iap; 75 struct pmc_md_ucf_op_pmcallocate pm_ucf; 76 struct pmc_md_ucp_op_pmcallocate pm_ucp; 77 uint64_t __pad[4]; 78 }; 79 80 /* Logging */ 81 #define PMCLOG_READADDR PMCLOG_READ64 82 #define PMCLOG_EMITADDR PMCLOG_EMIT64 83 84 #ifdef _KERNEL 85 86 union pmc_md_pmc { 87 struct pmc_md_amd_pmc pm_amd; 88 struct pmc_md_iaf_pmc pm_iaf; 89 struct pmc_md_iap_pmc pm_iap; 90 struct pmc_md_ucf_pmc pm_ucf; 91 struct pmc_md_ucp_pmc pm_ucp; 92 }; 93 94 #define PMC_TRAPFRAME_TO_PC(TF) ((TF)->tf_rip) 95 #define PMC_TRAPFRAME_TO_FP(TF) ((TF)->tf_rbp) 96 #define PMC_TRAPFRAME_TO_USER_SP(TF) ((TF)->tf_rsp) 97 #define PMC_TRAPFRAME_TO_KERNEL_SP(TF) ((TF)->tf_rsp) 98 99 #define PMC_AT_FUNCTION_PROLOGUE_PUSH_BP(I) \ 100 (((I) & 0xffffffff) == 0xe5894855) /* pushq %rbp; movq %rsp,%rbp */ 101 #define PMC_AT_FUNCTION_PROLOGUE_MOV_SP_BP(I) \ 102 (((I) & 0x00ffffff) == 0x00e58948) /* movq %rsp,%rbp */ 103 #define PMC_AT_FUNCTION_EPILOGUE_RET(I) \ 104 (((I) & 0xFF) == 0xC3) /* ret */ 105 106 #define PMC_IN_TRAP_HANDLER(PC) \ 107 ((PC) >= (uintptr_t) start_exceptions && \ 108 (PC) < (uintptr_t) end_exceptions) 109 110 #define PMC_IN_KERNEL_STACK(va) kstack_contains(curthread, (va), sizeof(va)) 111 #define PMC_IN_KERNEL(va) INKERNEL(va) 112 #define PMC_IN_USERSPACE(va) ((va) <= VM_MAXUSER_ADDRESS) 113 114 /* Build a fake kernel trapframe from current instruction pointer. */ 115 #define PMC_FAKE_TRAPFRAME(TF) \ 116 do { \ 117 (TF)->tf_cs = 0; (TF)->tf_rflags = 0; \ 118 __asm __volatile("movq %%rbp,%0" : "=r" ((TF)->tf_rbp)); \ 119 __asm __volatile("movq %%rsp,%0" : "=r" ((TF)->tf_rsp)); \ 120 __asm __volatile("call 1f \n\t1: pop %0" : "=r"((TF)->tf_rip)); \ 121 } while (0) 122 123 /* 124 * Prototypes 125 */ 126 127 void start_exceptions(void), end_exceptions(void); 128 129 struct pmc_mdep *pmc_amd_initialize(void); 130 void pmc_amd_finalize(struct pmc_mdep *_md); 131 struct pmc_mdep *pmc_intel_initialize(void); 132 void pmc_intel_finalize(struct pmc_mdep *_md); 133 134 #endif /* _KERNEL */ 135 #endif /* _MACHINE_PMC_MDEP_H */ 136