hwpmc_core.h revision 185363 
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 185363 2008-11-27 09:00:47Z jkoshy $
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};
50
51#define	IAP_EVSEL(C)	((C) & 0xFF)
52#define	IAP_UMASK(C)	((C) & 0xFF00)
53#define	IAP_USR		(1 << 16)
54#define	IAP_OS		(1 << 17)
55#define	IAP_EDGE	(1 << 18)
56#define	IAP_INT		(1 << 20)
57#define	IAP_ANY		(1 << 21)
58#define	IAP_EN		(1 << 22)
59#define	IAP_INV		(1 << 23)
60#define	IAP_CMASK(C)	(((C) & 0xFF) << 24)
61
62#ifdef	_KERNEL
63
64/*
65 * Fixed-function counters.
66 */
67#define	IAF_MASK				0xF
68
69#define	IAF_CTR0				0x309
70#define	IAF_CTR1				0x30A
71#define	IAF_CTR2				0x30B
72
73#define	IAF_OFFSET				32
74#define	IAF_CTRL				0x38D
75
76/*
77 * Programmable counters.
78 */
79#define	IAP_PMC0				0x0C1
80#define	IAP_PMC1				0x0C2
81
82#define	IAP_EVSEL0				0x186
83#define	IAP_EVSEL1				0x187
84
85/*
86 * Simplified programming interface in Intel Performance Architecture
87 * v2 and later.
88 */
89#define	IA_GLOBAL_STATUS			0x38E
90#define	IA_GLOBAL_CTRL				0x38F
91#define	IA_GLOBAL_OVF_CTRL			0x390
92
93#define	IA_GLOBAL_STATUS_FLAG_CONDCHG		(1ULL << 63)
94#define	IA_GLOBAL_STATUS_FLAG_OVFBUF		(1ULL << 62)
95
96struct pmc_md_iaf_pmc {
97	uint64_t	pm_iaf_ctrl;
98};
99
100struct pmc_md_iap_pmc {
101	uint32_t	pm_iap_evsel;
102};
103
104/*
105 * Prototypes.
106 */
107
108int	pmc_core_initialize(struct pmc_mdep *_md, int _maxcpu);
109void	pmc_core_finalize(struct pmc_mdep *_md);
110
111void	pmc_core_mark_started(int _cpu, int _pmc);
112
113int	pmc_iaf_initialize(struct pmc_mdep *_md, int _maxcpu, int _npmc, int _width);
114void	pmc_iaf_finalize(struct pmc_mdep *_md);
115
116int	pmc_iap_initialize(struct pmc_mdep *_md, int _maxcpu, int _npmc, int _width,
117	    int _flags);
118void	pmc_iap_finalize(struct pmc_mdep *_md);
119
120#endif	/* _KERNEL */
121#endif	/* _DEV_HWPMC_CORE_H */
122