hwpmc_core.h revision 206089 
1/*-
2 * Copyright (c) 2008 Joseph Koshy
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/dev/hwpmc/hwpmc_core.h 206089 2010-04-02 13:23:49Z fabient $
27 */
28
29#ifndef _DEV_HWPMC_CORE_H_
30#define	_DEV_HWPMC_CORE_H_ 1
31
32/*
33 * Fixed-function PMCs.
34 */
35struct pmc_md_iaf_op_pmcallocate {
36	uint16_t	pm_iaf_flags;	/* additional flags */
37};
38
39#define	IAF_OS		0x1
40#define	IAF_USR		0x2
41#define	IAF_ANY		0x4
42#define	IAF_PMI		0x8
43
44/*
45 * Programmable PMCs.
46 */
47struct pmc_md_iap_op_pmcallocate {
48	uint32_t	pm_iap_config;
49	uint32_t	pm_iap_rsp;
50};
51
52#define	IAP_EVSEL(C)	((C) & 0xFF)
53#define	IAP_UMASK(C)	((C) & 0xFF00)
54#define	IAP_USR		(1 << 16)
55#define	IAP_OS		(1 << 17)
56#define	IAP_EDGE	(1 << 18)
57#define	IAP_INT		(1 << 20)
58#define	IAP_ANY		(1 << 21)
59#define	IAP_EN		(1 << 22)
60#define	IAP_INV		(1 << 23)
61#define	IAP_CMASK(C)	(((C) & 0xFF) << 24)
62
63#define	IA_OFFCORE_RSP_MASK	0xF7FF
64
65#ifdef	_KERNEL
66
67/*
68 * Fixed-function counters.
69 */
70#define	IAF_MASK				0xF
71
72#define	IAF_CTR0				0x309
73#define	IAF_CTR1				0x30A
74#define	IAF_CTR2				0x30B
75
76#define	IAF_OFFSET				32
77#define	IAF_CTRL				0x38D
78
79/*
80 * Programmable counters.
81 */
82
83#define	IAP_PMC0				0x0C1
84#define	IAP_EVSEL0				0x186
85
86/*
87 * Simplified programming interface in Intel Performance Architecture
88 * v2 and later.
89 */
90
91#define	IA_GLOBAL_STATUS			0x38E
92#define	IA_GLOBAL_CTRL				0x38F
93#define	IA_GLOBAL_OVF_CTRL			0x390
94
95#define	IA_GLOBAL_STATUS_FLAG_CONDCHG		(1ULL << 63)
96#define	IA_GLOBAL_STATUS_FLAG_OVFBUF		(1ULL << 62)
97
98/*
99 * Offcore response configuration.
100 */
101#define	IA_OFFCORE_RSP0				0x1A6
102#define	IA_OFFCORE_RSP1				0x1A7
103
104struct pmc_md_iaf_pmc {
105	uint64_t	pm_iaf_ctrl;
106};
107
108struct pmc_md_iap_pmc {
109	uint32_t	pm_iap_evsel;
110	uint32_t	pm_iap_rsp;
111};
112
113/*
114 * Prototypes.
115 */
116
117int	pmc_core_initialize(struct pmc_mdep *_md, int _maxcpu);
118void	pmc_core_finalize(struct pmc_mdep *_md);
119
120void	pmc_core_mark_started(int _cpu, int _pmc);
121
122int	pmc_iaf_initialize(struct pmc_mdep *_md, int _maxcpu, int _npmc, int _width);
123void	pmc_iaf_finalize(struct pmc_mdep *_md);
124
125int	pmc_iap_initialize(struct pmc_mdep *_md, int _maxcpu, int _npmc, int _width,
126	    int _flags);
127void	pmc_iap_finalize(struct pmc_mdep *_md);
128
129#endif	/* _KERNEL */
130#endif	/* _DEV_HWPMC_CORE_H */
131