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      1 /*	$NetBSD: isabeep.c,v 1.10 2011/06/06 16:42:18 matt Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995, 1996 Carnegie-Mellon University.
      5  * All rights reserved.
      6  *
      7  * Author: Chris G. Demetriou
      8  *
      9  * Permission to use, copy, modify and distribute this software and
     10  * its documentation is hereby granted, provided that both the copyright
     11  * notice and this permission notice appear in all copies of the
     12  * software, derivative works or modified versions, and any portions
     13  * thereof, and that both notices appear in supporting documentation.
     14  *
     15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18  *
     19  * Carnegie Mellon requests users of this software to return to
     20  *
     21  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22  *  School of Computer Science
     23  *  Carnegie Mellon University
     24  *  Pittsburgh PA 15213-3890
     25  *
     26  * any improvements or extensions that they make and grant Carnegie the
     27  * rights to redistribute these changes.
     28  */
     29 
     30 #include <sys/cdefs.h>
     31 __KERNEL_RCSID(0, "$NetBSD: isabeep.c,v 1.10 2011/06/06 16:42:18 matt Exp $");
     32 
     33 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     34 
     35 #include <sys/types.h>
     36 #include <sys/param.h>
     37 #include <sys/time.h>
     38 #include <sys/systm.h>
     39 #include <sys/errno.h>
     40 #include <sys/device.h>
     41 #include <uvm/uvm_extern.h>
     42 
     43 #include <dev/isa/isavar.h>
     44 
     45 #include "pcppi.h"
     46 #if NPCPPI > 0
     47 #include <dev/isa/pcppivar.h>
     48 
     49 int isabeepmatch(device_t, cfdata_t, void *);
     50 void isabeepattach(device_t, device_t, void *);
     51 
     52 CFATTACH_DECL_NEW(isabeep, 0,
     53     isabeepmatch, isabeepattach, NULL, NULL);
     54 
     55 static int ppi_attached;
     56 static pcppi_tag_t ppicookie;
     57 
     58 int
     59 isabeepmatch(device_t parent, cfdata_t match, void *aux)
     60 {
     61 	return (!ppi_attached);
     62 }
     63 
     64 void
     65 isabeepattach(device_t parent, device_t self, void *aux)
     66 {
     67 	aprint_normal("\n");
     68 
     69 	ppicookie = ((struct pcppi_attach_args *)aux)->pa_cookie;
     70 	ppi_attached = 1;
     71 }
     72 #endif
     73 
     74 void
     75 isabeep(int pitch, int period)
     76 {
     77 #if NPCPPI > 0
     78 	if (ppi_attached)
     79 		pcppi_bell(ppicookie, pitch, period, 0);
     80 #endif
     81 }
     82