1 /*- 2 * Copyright (c) 2003-2008 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 * $FreeBSD$ 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_piv.h> 44 #include <dev/hwpmc/hwpmc_tsc.h> 45 46 /* 47 * Intel processors implementing V2 and later of the Intel performance 48 * measurement architecture have PMCs of the following classes: TSC, 49 * IAF and IAP. 50 */ 51 #define PMC_MDEP_CLASS_INDEX_TSC 0 52 #define PMC_MDEP_CLASS_INDEX_K8 1 53 #define PMC_MDEP_CLASS_INDEX_P4 1 54 #define PMC_MDEP_CLASS_INDEX_IAF 1 55 #define PMC_MDEP_CLASS_INDEX_IAP 2 56 57 /* 58 * On the amd64 platform we support the following PMCs. 59 * 60 * TSC The timestamp counter 61 * K8 AMD Athlon64 and Opteron PMCs in 64 bit mode. 62 * PIV Intel P4/HTT and P4/EMT64 63 * IAP Intel Core/Core2/Atom CPUs in 64 bits mode. 64 * IAF Intel fixed-function PMCs in Core2 and later CPUs. 65 */ 66 67 union pmc_md_op_pmcallocate { 68 struct pmc_md_amd_op_pmcallocate pm_amd; 69 struct pmc_md_p4_op_pmcallocate pm_p4; 70 uint64_t __pad[4]; 71 }; 72 73 /* Logging */ 74 #define PMCLOG_READADDR PMCLOG_READ64 75 #define PMCLOG_EMITADDR PMCLOG_EMIT64 76 77 #ifdef _KERNEL 78 79 union pmc_md_pmc { 80 struct pmc_md_amd_pmc pm_amd; 81 struct pmc_md_p4_pmc pm_p4; 82 }; 83 84 #define PMC_TRAPFRAME_TO_PC(TF) ((TF)->tf_rip) 85 #define PMC_TRAPFRAME_TO_FP(TF) ((TF)->tf_rbp) 86 #define PMC_TRAPFRAME_TO_USER_SP(TF) ((TF)->tf_rsp) 87 #define PMC_TRAPFRAME_TO_KERNEL_SP(TF) ((TF)->tf_rsp) 88 89 #define PMC_AT_FUNCTION_PROLOGUE_PUSH_BP(I) \ 90 (((I) & 0xffffffff) == 0xe5894855) /* pushq %rbp; movq %rsp,%rbp */ 91 #define PMC_AT_FUNCTION_PROLOGUE_MOV_SP_BP(I) \ 92 (((I) & 0x00ffffff) == 0x00e58948) /* movq %rsp,%rbp */ 93 #define PMC_AT_FUNCTION_EPILOGUE_RET(I) \ 94 (((I) & 0xFF) == 0xC3) /* ret */ 95 96 #define PMC_IN_TRAP_HANDLER(PC) \ 97 ((PC) >= (uintptr_t) start_exceptions && \ 98 (PC) < (uintptr_t) end_exceptions) 99 100 #define PMC_IN_KERNEL_STACK(S,START,END) \ 101 ((S) >= (START) && (S) < (END)) 102 #define PMC_IN_KERNEL(va) (((va) >= DMAP_MIN_ADDRESS && \ 103 (va) < DMAP_MAX_ADDRESS) || ((va) >= VM_MIN_KERNEL_ADDRESS && \ 104 (va) < VM_MAX_KERNEL_ADDRESS)) 105 106 #define PMC_IN_USERSPACE(va) ((va) <= VM_MAXUSER_ADDRESS) 107 108 /* 109 * Prototypes 110 */ 111 112 void start_exceptions(void), end_exceptions(void); 113 void pmc_x86_lapic_enable_pmc_interrupt(void); 114 115 struct pmc_mdep *pmc_amd_initialize(void); 116 void pmc_amd_finalize(struct pmc_mdep *_md); 117 struct pmc_mdep *pmc_intel_initialize(void); 118 void pmc_intel_finalize(struct pmc_mdep *_md); 119 120 #endif /* _KERNEL */ 121 #endif /* _MACHINE_PMC_MDEP_H */ 122