sys/arch/prep/isa/isabeep.c

   1 /*      $NetBSD: isabeep.c,v 1.8.26.1 2007/05/10 15:46:07 garbled 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@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 1.8.26.1 2007/05/10 15:46:07 garbled 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(struct device *, struct cfdata *, void *);
  50 void isabeepattach(struct device *, struct device *, void *);
  51
  52 CFATTACH_DECL(isabeep, sizeof(struct device),
  53     isabeepmatch, isabeepattach, NULL, NULL);
  54
  55 static int ppi_attached;
  56 static pcppi_tag_t ppicookie;
  57
  58 int
  59 isabeepmatch(struct device *parent, struct cfdata *match, void *aux)
  60 {
  61         return (!ppi_attached);
  62 }
  63
  64 void
  65 isabeepattach(struct device *parent, struct device *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 }