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delay.c revision 1.1.2.3 
      1  1.1.2.3  yamt /*	$NetBSD: delay.c,v 1.1.2.3 2006/05/24 10:56:57 yamt Exp $	*/
      2  1.1.2.2  yamt 
      3  1.1.2.2  yamt /*-
      4  1.1.2.2  yamt  * Copyright (c) 2001 Doug Rabson
      5  1.1.2.2  yamt  * All rights reserved.
      6  1.1.2.2  yamt  *
      7  1.1.2.2  yamt  * Redistribution and use in source and binary forms, with or without
      8  1.1.2.2  yamt  * modification, are permitted provided that the following conditions
      9  1.1.2.2  yamt  * are met:
     10  1.1.2.2  yamt  * 1. Redistributions of source code must retain the above copyright
     11  1.1.2.2  yamt  *    notice, this list of conditions and the following disclaimer.
     12  1.1.2.2  yamt  * 2. Redistributions in binary form must reproduce the above copyright
     13  1.1.2.2  yamt  *    notice, this list of conditions and the following disclaimer in the
     14  1.1.2.2  yamt  *    documentation and/or other materials provided with the distribution.
     15  1.1.2.2  yamt  *
     16  1.1.2.2  yamt  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  1.1.2.2  yamt  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  1.1.2.2  yamt  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  1.1.2.2  yamt  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  1.1.2.2  yamt  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  1.1.2.2  yamt  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  1.1.2.2  yamt  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  1.1.2.2  yamt  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  1.1.2.2  yamt  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  1.1.2.2  yamt  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  1.1.2.2  yamt  * SUCH DAMAGE.
     27  1.1.2.2  yamt  */
     28  1.1.2.2  yamt 
     29  1.1.2.2  yamt #include <sys/cdefs.h>
     30  1.1.2.3  yamt /* __FBSDID("$FreeBSD: src/sys/boot/efi/libefi/delay.c,v 1.3 2003/04/03 21:36:29 obrien Exp $"); */
     31  1.1.2.2  yamt 
     32  1.1.2.2  yamt #include <efi.h>
     33  1.1.2.2  yamt #include <efilib.h>
     34  1.1.2.2  yamt 
     35  1.1.2.2  yamt void
     36  1.1.2.2  yamt delay(int usecs)
     37  1.1.2.2  yamt {
     38  1.1.2.2  yamt 	static EFI_EVENT ev = 0;
     39  1.1.2.2  yamt 	UINTN junk;
     40  1.1.2.2  yamt 
     41  1.1.2.2  yamt 	if (!ev) {
     42  1.1.2.2  yamt 		if (BS->CreateEvent(EVT_TIMER, TPL_APPLICATION, 0, 0, &ev)
     43  1.1.2.2  yamt 		    != EFI_SUCCESS)
     44  1.1.2.2  yamt 			return;
     45  1.1.2.2  yamt 	}
     46  1.1.2.2  yamt 
     47  1.1.2.2  yamt 	BS->SetTimer(ev, TimerRelative, usecs * 10);
     48  1.1.2.2  yamt 	BS->WaitForEvent(1, &ev, &junk);
     49  1.1.2.2  yamt }
     50