1 /* $NetBSD: sysbeep_isa.c,v 1.11 2012/10/27 17:17:38 chs Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Mark Brinicombe of Causality Limited. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: sysbeep_isa.c,v 1.11 2012/10/27 17:17:38 chs Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 #include <dev/isa/isavar.h> 39 40 #include <dev/isa/pcppivar.h> 41 42 /* Prototypes */ 43 int sysbeep_isa_match(device_t, cfdata_t, void *); 44 void sysbeep_isa_attach(device_t, device_t, void *); 45 void sysbeep_isa(int, int); 46 47 /* device attach structure */ 48 CFATTACH_DECL_NEW(sysbeep_isa, 0, 49 sysbeep_isa_match, sysbeep_isa_attach, NULL, NULL); 50 51 static int ppi_attached; 52 static pcppi_tag_t ppicookie; 53 54 int 55 sysbeep_isa_match(device_t parent, cfdata_t match, void *aux) 56 { 57 return (!ppi_attached); 58 } 59 60 void 61 sysbeep_isa_attach(device_t parent, device_t self, void *aux) 62 { 63 aprint_normal("\n"); 64 65 ppicookie = ((struct pcppi_attach_args *)aux)->pa_cookie; 66 ppi_attached = 1; 67 } 68 69 void 70 sysbeep(int pitch, int period) 71 { 72 if (ppi_attached) 73 pcppi_bell(ppicookie, pitch, period, 0); 74 } 75