1/*	$NetBSD: delay.c,v 1.1 2006/04/07 14:21:32 cherry Exp $	*/
2
3/*-
4 * Copyright (c) 2001 Doug Rabson
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30/* __FBSDID("$FreeBSD: src/sys/boot/efi/libefi/delay.c,v 1.3 2003/04/03 21:36:29 obrien Exp $"); */
31
32#include <efi.h>
33#include <efilib.h>
34
35void
36delay(int usecs)
37{
38	static EFI_EVENT ev = 0;
39	UINTN junk;
40
41	if (!ev) {
42		if (BS->CreateEvent(EVT_TIMER, TPL_APPLICATION, 0, 0, &ev)
43		    != EFI_SUCCESS)
44			return;
45	}
46
47	BS->SetTimer(ev, TimerRelative, usecs * 10);
48	BS->WaitForEvent(1, &ev, &junk);
49}
50