freebsd-dev/sys/dev/hwpmc/hwpmc_mips24k.h
George V. Neville-Neil 660df75e8b Add support for hwpmc(4) on the MIPS 24K, 32 bit, embedded processor.
Add macros for properly accessing coprocessor 0 registers that
support performance counters.

Reviewed by:	jkoshy rpaulo fabien imp
MFC after:	1 month
2010-03-03 15:05:58 +00:00

62 lines
2.5 KiB
C

/*-
* Copyright (c) 2010 George V. Neville-Neil <gnn@freebsd.org>
* 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.
*
* $FreeBSD$
*/
#ifndef _DEV_HWPMC_MIPS24K_H_
#define _DEV_HWPMC_MIPS24K_H_
#define MIPS24K_PMC_CAPS (PMC_CAP_INTERRUPT | PMC_CAP_USER | \
PMC_CAP_SYSTEM | PMC_CAP_EDGE | \
PMC_CAP_THRESHOLD | PMC_CAP_READ | \
PMC_CAP_WRITE | PMC_CAP_INVERT | \
PMC_CAP_QUALIFIER)
#define MIPS24K_PMC_USER_ENABLE 0x08 /* Count in USER mode */
#define MIPS24K_PMC_SUPER_ENABLE 0x04 /* Count in SUPERVISOR mode */
#define MIPS24K_PMC_KERNEL_ENABLE 0x02 /* Count in KERNEL mode */
#define MIPS24K_PMC_ENABLE (MIPS24K_PMC_USER_ENABLE | \
MIPS24K_PMC_SUPER_ENABLE | \
MIPS24K_PMC_KERNEL_ENABLE)
#define MIPS24K_RELOAD_COUNT_TO_PERFCTR_VALUE(R) (-(R))
#define MIPS24K_PERFCTR_VALUE_TO_RELOAD_COUNT(P) (-(P))
#define MIPS24K_PMC_SELECT 0x4 /* Which bit position the event starts at. */
#define MIPS24K_PMC_OFFSET 2 /* Control registers are 0, 2, 4, etc. */
#define MIPS24K_PMC_MORE 0x800000 /* Test for more PMCs (bit 31) */
#ifdef _KERNEL
/* MD extension for 'struct pmc' */
struct pmc_md_mips24k_pmc {
uint32_t pm_mips24k_evsel;
};
#endif /* _KERNEL */
#endif /* _DEV_HWPMC_MIPS_H_ */