freebsd-dev/sys/dev/hwpmc/hwpmc_xscale.h
Rui Paulo 0ce207d2af Intel XScale hwpmc(4) support.
This brings hwpmc(4) support for 2nd and 3rd generation XScale cores.
Right now it's enabled by default to make sure we test this a bit.
When the time comes it can be disabled by default.
Tested on Gateworks boards.

A man page is coming.

Obtained from:	//depot/user/rpaulo/xscalepmc/...
2009-12-23 23:16:54 +00:00

74 lines
2.9 KiB
C

/*-
* Copyright (c) 2009 Rui Paulo <rpaulo@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_XSCALE_H_
#define _DEV_HWPMC_XSCALE_H_
#define XSCALE_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 XSCALE_PMNC_ENABLE 0x01 /* Enable all Counters */
#define XSCALE_PMNC_PMNRESET 0x02 /* Performance Counter Reset */
#define XSCALE_PMNC_CCNTRESET 0x04 /* Clock Counter Reset */
#define XSCALE_PMNC_CCNTDIV 0x08 /* Clock Counter Divider */
/* IXP425 only -- first generation */
#define XSCALE_PMNC_EVT0_MASK 0x00ff000
#define XSCALE_PMNC_EVT1_MASK 0xff00000
#define XSCALE_INTEN_CCNT 0x01 /* Enable Clock Counter Int. */
#define XSCALE_INTEN_PMN0 0x02 /* Enable PMN0 Interrupts */
#define XSCALE_INTEN_PMN1 0x04 /* Enable PMN1 Interrupts */
#define XSCALE_INTEN_PMN2 0x08 /* Enable PMN2 Interrupts */
#define XSCALE_INTEN_PMN3 0x10 /* Enable PMN3 Interrupts */
#define XSCALE_EVTSEL_EVT0_MASK 0x000000ff
#define XSCALE_EVTSEL_EVT1_MASK 0x0000ff00
#define XSCALE_EVTSEL_EVT2_MASK 0x00ff0000
#define XSCALE_EVTSEL_EVT3_MASK 0xff000000
#define XSCALE_FLAG_CCNT_OVERFLOW 0x01
#define XSCALE_FLAG_PMN0_OVERFLOW 0x02
#define XSCALE_FLAG_PMN1_OVERFLOW 0x04
#define XSCALE_FLAG_PMN2_OVERFLOW 0x08
#define XSCALE_FLAG_PMN3_OVERFLOW 0x10
#define XSCALE_RELOAD_COUNT_TO_PERFCTR_VALUE(R) (-(R))
#define XSCALE_PERFCTR_VALUE_TO_RELOAD_COUNT(P) (-(P))
#ifdef _KERNEL
/* MD extension for 'struct pmc' */
struct pmc_md_xscale_pmc {
uint32_t pm_xscale_evsel;
};
#endif /* _KERNEL */
#endif /* _DEV_HWPMC_XSCALE_H_ */