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/* $NetBSD: tprof.h,v 1.7 2022/12/01 00:32:52 ryo Exp $ */
/*-
* Copyright (c)2008,2009,2010 YAMAMOTO Takashi,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _DEV_TPROF_TPROF_H_
#define _DEV_TPROF_TPROF_H_
/*
* definitions used by backend drivers
*/
#include <sys/types.h>
#include <dev/tprof/tprof_types.h>
struct tprof_backend_softc_counter {
tprof_param_t ctr_param;
u_int ctr_bitwidth;
uint64_t ctr_counter_val;
uint64_t ctr_counter_reset_val;
};
typedef struct tprof_backend_softc {
u_int sc_ncounters;
tprof_countermask_t sc_ctr_running_mask;/* start/stop */
tprof_countermask_t sc_ctr_configured_mask; /* configured */
tprof_countermask_t sc_ctr_ovf_mask; /* overflow intr required */
tprof_countermask_t sc_ctr_prof_mask; /* profiled */
percpu_t *sc_ctr_offset_percpu;
size_t sc_ctr_offset_percpu_size;
struct tprof_backend_softc_counter sc_count[TPROF_MAXCOUNTERS];
} tprof_backend_softc_t;
typedef struct tprof_backend_ops {
uint32_t (*tbo_ident)(void);
u_int (*tbo_ncounters)(void);
u_int (*tbo_counter_bitwidth)(u_int);
uint64_t (*tbo_counter_read)(u_int);
uint64_t (*tbo_counter_estimate_freq)(u_int);
int (*tbo_valid_event)(u_int, const tprof_param_t *);
void (*tbo_configure_event)(u_int, const tprof_param_t *);
void (*tbo_start)(tprof_countermask_t);
void (*tbo_stop)(tprof_countermask_t);
int (*tbo_establish)(tprof_backend_softc_t *);
void (*tbo_disestablish)(tprof_backend_softc_t *);
} tprof_backend_ops_t;
#define TPROF_BACKEND_VERSION 4
int tprof_backend_register(const char *, const tprof_backend_ops_t *, int);
int tprof_backend_unregister(const char *);
typedef struct {
uintptr_t tfi_pc; /* program counter */
u_int tfi_counter; /* counter. 0..(TPROF_MAXCOUNTERS-1) */
bool tfi_inkernel; /* if tfi_pc is in the kernel address space */
} tprof_frame_info_t;
void tprof_sample(void *, const tprof_frame_info_t *);
#endif /* _DEV_TPROF_TPROF_H_ */
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