/*

 * showreset.c - getting the PAL reset values for the PMCs

 *

 * Copyright (c) 2002-2006 Hewlett-Packard Development Company, L.P.

 * Contributed by Stephane Eranian <eranian@hpl.hp.com>

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies

 * of the Software, and to permit persons to whom the Software is furnished to do so,

 * subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in all

 * copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,

 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A

 * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF

 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE

 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 *

 * This file is part of libpfm, a performance monitoring support library for

 * applications on Linux/ia64.

 */

#include <sys/types.h>

#include <stdio.h>

#include <stdlib.h>

#include <stdarg.h>

#include <errno.h>

#include <unistd.h>

#include <string.h>

#include <perfmon/perfmon.h>

#include <perfmon/pfmlib.h>

#define NUM_PMCS PFMLIB_MAX_PMCS

#define NUM_PMDS PFMLIB_MAX_PMDS

static void fatal_error(char *fmt,...) __attribute__((noreturn));

static void

fatal_error(char *fmt, ...)

{

	va_list ap;

	va_start(ap, fmt);

	vfprintf(stderr, fmt, ap);

	va_end(ap);

	exit(1);

}

int

main(int argc, char **argv)

{

	unsigned int i, cnum = 0;

	pfarg_reg_t pc[NUM_PMCS];

	pfmlib_regmask_t impl_pmcs;

	unsigned int num_pmcs;

	/*

	 * Initialize pfm library (required before we can use it)

	 */

	if (pfm_initialize() != PFMLIB_SUCCESS) {

		printf("Can't initialize library\n");

		exit(1);

	}

	memset(&impl_pmcs, 0, sizeof(impl_pmcs));

	memset(pc, 0, sizeof(pc));

	pfm_get_impl_pmcs(&impl_pmcs);

	pfm_get_num_pmcs(&num_pmcs);

	for(i=0; num_pmcs ; i++) {

		if (pfm_regmask_isset(&impl_pmcs, i) == 0) continue;

		pc[cnum++].reg_num = i;

		num_pmcs--;

	}

	if (perfmonctl(0, PFM_GET_PMC_RESET_VAL, pc, cnum) == -1 ) {

		if (errno == ENOSYS) {

			fatal_error("Your kernel does not have performance monitoring support!\n");

		}

		fatal_error("cannot get reset values: %s\n", strerror(errno));

	}

	for (i=0; i < cnum; i++) {

		printf("PMC%u 0x%lx\n", pc[i].reg_num, pc[i].reg_value);

	}

	return 0;

}