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: releng/8.2/sys/i386/include/pmc_mdep.h 206701 2010-04-16 15:43:24Z fabient $
31 */
32
33 #ifndef _MACHINE_PMC_MDEP_H
34 #define _MACHINE_PMC_MDEP_H 1
35
36 #ifdef _KERNEL
37 struct 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 0
70 #define PMC_MDEP_CLASS_INDEX_K7 1
71 #define PMC_MDEP_CLASS_INDEX_K8 1
72 #define PMC_MDEP_CLASS_INDEX_P4 1
73 #define PMC_MDEP_CLASS_INDEX_P5 1
74 #define PMC_MDEP_CLASS_INDEX_P6 1
75 #define PMC_MDEP_CLASS_INDEX_IAP 1
76 #define PMC_MDEP_CLASS_INDEX_IAF 2
77 #define PMC_MDEP_CLASS_INDEX_UCP 3
78 #define PMC_MDEP_CLASS_INDEX_UCF 4
79
80 /*
81 * Architecture specific extensions to <sys/pmc.h> structures.
82 */
83
84 union pmc_md_op_pmcallocate {
85 struct pmc_md_amd_op_pmcallocate pm_amd;
86 struct pmc_md_iaf_op_pmcallocate pm_iaf;
87 struct pmc_md_iap_op_pmcallocate pm_iap;
88 struct pmc_md_ucf_op_pmcallocate pm_ucf;
89 struct pmc_md_ucp_op_pmcallocate pm_ucp;
90 struct pmc_md_p4_op_pmcallocate pm_p4;
91 struct pmc_md_pentium_op_pmcallocate pm_pentium;
92 struct pmc_md_ppro_op_pmcallocate pm_ppro;
93 uint64_t __pad[4];
94 };
95
96 /* Logging */
97 #define PMCLOG_READADDR PMCLOG_READ32
98 #define PMCLOG_EMITADDR PMCLOG_EMIT32
99
100 #ifdef _KERNEL
101
102 /* MD extension for 'struct pmc' */
103 union pmc_md_pmc {
104 struct pmc_md_amd_pmc pm_amd;
105 struct pmc_md_iaf_pmc pm_iaf;
106 struct pmc_md_iap_pmc pm_iap;
107 struct pmc_md_ucf_pmc pm_ucf;
108 struct pmc_md_ucp_pmc pm_ucp;
109 struct pmc_md_p4_pmc pm_p4;
110 struct pmc_md_pentium_pmc pm_pentium;
111 struct pmc_md_ppro_pmc pm_ppro;
112 };
113
114 struct pmc;
115 struct pmc_mdep;
116
117 #define PMC_TRAPFRAME_TO_PC(TF) ((TF)->tf_eip)
118 #define PMC_TRAPFRAME_TO_FP(TF) ((TF)->tf_ebp)
119
120 /*
121 * The layout of the stack frame on entry into the NMI handler depends on
122 * whether a privilege level change (and consequent stack switch) was
123 * required for entry.
124 *
125 * When processing an interrupt when in user mode, the processor switches
126 * stacks, and saves the user mode stack pointer on the kernel stack. The
127 * user mode stack pointer is then available to the interrupt handler
128 * at frame->tf_esp.
129 *
130 * When processing an interrupt while in kernel mode, the processor
131 * continues to use the existing (kernel) stack. Therefore we determine
132 * the stack pointer for the interrupted kernel procedure by adding an
133 * offset to the current frame pointer.
134 */
135
136 #define PMC_TRAPFRAME_TO_USER_SP(TF) ((TF)->tf_esp)
137 #define PMC_TRAPFRAME_TO_KERNEL_SP(TF) ((uintptr_t) &((TF)->tf_esp))
138
139 #define PMC_IN_KERNEL_STACK(S,START,END) \
140 ((S) >= (START) && (S) < (END))
141 #define PMC_IN_KERNEL(va) (((va) >= USRSTACK) && \
142 ((va) < VM_MAX_KERNEL_ADDRESS))
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 /*
158 * Prototypes
159 */
160
161 void start_exceptions(void), end_exceptions(void);
162
163 struct pmc_mdep *pmc_amd_initialize(void);
164 void pmc_amd_finalize(struct pmc_mdep *_md);
165 struct pmc_mdep *pmc_intel_initialize(void);
166 void pmc_intel_finalize(struct pmc_mdep *_md);
167
168 #endif /* _KERNEL */
169 #endif /* _MACHINE_PMC_MDEP_H */
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