/*-
 *   BSD LICENSE
 *
 *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
 *   All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following conditions
 *   are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Intel Corporation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
 *   OWNER 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.
 */

#include <unistd.h>
#include <sys/sysctl.h>

#include <rte_log.h>
#include <rte_eal.h>
#include <rte_lcore.h>
#include <rte_common.h>
#include <rte_debug.h>

#include "eal_private.h"
#include "eal_thread.h"

/* No topology information available on FreeBSD including NUMA info */
unsigned
eal_cpu_core_id(__rte_unused unsigned lcore_id)
{
	return 0;
}

static int
eal_get_ncpus(void)
{
	static int ncpu = -1;
	int mib[2] = {CTL_HW, HW_NCPU};
	size_t len = sizeof(ncpu);

	if (ncpu < 0) {
		sysctl(mib, 2, &ncpu, &len, NULL, 0);
		RTE_LOG(INFO, EAL, "Sysctl reports %d cpus\n", ncpu);
	}
	return ncpu;
}

unsigned
eal_cpu_socket_id(__rte_unused unsigned cpu_id)
{
	return 0;
}

/* Check if a cpu is present by the presence of the
 * cpu information for it.
 */
int
eal_cpu_detected(unsigned lcore_id)
{
	const unsigned ncpus = eal_get_ncpus();
	return lcore_id < ncpus;
}