1/*
2 * Copyright (C) 2002-2003 Hewlett-Packard Co
3 *               Stephane Eranian <eranian@hpl.hp.com>
4 *
5 * This file implements the default sampling buffer format
6 * for Linux/ia64 perfmon subsystem.
7 */
8#ifndef __PERFMON_DEFAULT_SMPL_H__
9#define __PERFMON_DEFAULT_SMPL_H__ 1
10
11#define PFM_DEFAULT_SMPL_UUID { \
12		0x4d, 0x72, 0xbe, 0xc0, 0x06, 0x64, 0x41, 0x43, 0x82, 0xb4, 0xd3, 0xfd, 0x27, 0x24, 0x3c, 0x97}
13
14/*
15 * format specific parameters (passed at context creation)
16 */
17typedef struct {
18	unsigned long buf_size;		/* size of the buffer in bytes */
19	unsigned int  flags;		/* buffer specific flags */
20	unsigned int  res1;		/* for future use */
21	unsigned long reserved[2];	/* for future use */
22} pfm_default_smpl_arg_t;
23
24/*
25 * combined context+format specific structure. Can be passed
26 * to PFM_CONTEXT_CREATE
27 */
28typedef struct {
29	pfarg_context_t		ctx_arg;
30	pfm_default_smpl_arg_t	buf_arg;
31} pfm_default_smpl_ctx_arg_t;
32
33/*
34 * This header is at the beginning of the sampling buffer returned to the user.
35 * It is directly followed by the first record.
36 */
37typedef struct {
38	unsigned long	hdr_count;		/* how many valid entries */
39	unsigned long	hdr_cur_offs;		/* current offset from top of buffer */
40	unsigned long	hdr_reserved2;		/* reserved for future use */
41
42	unsigned long	hdr_overflows;		/* how many times the buffer overflowed */
43	unsigned long   hdr_buf_size;		/* how many bytes in the buffer */
44
45	unsigned int	hdr_version;		/* contains perfmon version (smpl format diffs) */
46	unsigned int	hdr_reserved1;		/* for future use */
47	unsigned long	hdr_reserved[10];	/* for future use */
48} pfm_default_smpl_hdr_t;
49
50/*
51 * Entry header in the sampling buffer.  The header is directly followed
52 * with the values of the PMD registers of interest saved in increasing
53 * index order: PMD4, PMD5, and so on. How many PMDs are present depends
54 * on how the session was programmed.
55 *
56 * In the case where multiple counters overflow at the same time, multiple
57 * entries are written consecutively.
58 *
59 * last_reset_value member indicates the initial value of the overflowed PMD.
60 */
61typedef struct {
62        int             pid;                    /* thread id (for NPTL, this is gettid()) */
63        unsigned char   reserved1[3];           /* reserved for future use */
64        unsigned char   ovfl_pmd;               /* index of overflowed PMD */
65
66        unsigned long   last_reset_val;         /* initial value of overflowed PMD */
67        unsigned long   ip;                     /* where did the overflow interrupt happened  */
68        unsigned long   tstamp;                 /* ar.itc when entering perfmon intr. handler */
69
70        unsigned short  cpu;                    /* cpu on which the overfow occured */
71        unsigned short  set;                    /* event set active when overflow ocurred   */
72        int    		tgid;              	/* thread group id (for NPTL, this is getpid()) */
73} pfm_default_smpl_entry_t;
74
75#define PFM_DEFAULT_MAX_PMDS		64 /* how many pmds supported by data structures (sizeof(unsigned long) */
76#define PFM_DEFAULT_MAX_ENTRY_SIZE	(sizeof(pfm_default_smpl_entry_t)+(sizeof(unsigned long)*PFM_DEFAULT_MAX_PMDS))
77#define PFM_DEFAULT_SMPL_MIN_BUF_SIZE	(sizeof(pfm_default_smpl_hdr_t)+PFM_DEFAULT_MAX_ENTRY_SIZE)
78
79#define PFM_DEFAULT_SMPL_VERSION_MAJ	2U
80#define PFM_DEFAULT_SMPL_VERSION_MIN	0U
81#define PFM_DEFAULT_SMPL_VERSION	(((PFM_DEFAULT_SMPL_VERSION_MAJ&0xffff)<<16)|(PFM_DEFAULT_SMPL_VERSION_MIN & 0xffff))
82
83#endif /* __PERFMON_DEFAULT_SMPL_H__ */
84