1 /* $NetBSD: spkr_pcppi.c,v 1.11 2017/06/14 05:01:35 pgoyette Exp $ */ 2 3 /* 4 * Copyright (c) 1990 Eric S. Raymond (esr@snark.thyrsus.com) 5 * Copyright (c) 1990 Andrew A. Chernov (ache@astral.msk.su) 6 * Copyright (c) 1990 Lennart Augustsson (lennart@augustsson.net) 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Eric S. Raymond 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 25 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 26 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 31 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 32 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 /* 37 * spkr.c -- device driver for console speaker on 80386 38 * 39 * v1.1 by Eric S. Raymond (esr@snark.thyrsus.com) Feb 1990 40 * modified for 386bsd by Andrew A. Chernov <ache@astral.msk.su> 41 * 386bsd only clean version, all SYSV stuff removed 42 * use hz value from param.c 43 */ 44 45 #include <sys/cdefs.h> 46 __KERNEL_RCSID(0, "$NetBSD: spkr_pcppi.c,v 1.11 2017/06/14 05:01:35 pgoyette Exp $"); 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/errno.h> 52 #include <sys/device.h> 53 #include <sys/malloc.h> 54 #include <sys/uio.h> 55 #include <sys/proc.h> 56 #include <sys/ioctl.h> 57 #include <sys/conf.h> 58 59 #include <sys/bus.h> 60 61 #include <dev/isa/pcppivar.h> 62 63 #include <dev/spkrvar.h> 64 #include <dev/spkrio.h> 65 66 struct spkr_pcppi_softc { 67 struct spkr_softc sc_spkr; 68 pcppi_tag_t sc_pcppicookie; 69 void (*sc_bell_func)(pcppi_tag_t, int, int, int); 70 }; 71 72 static int spkr_pcppi_probe(device_t, cfdata_t, void *); 73 static void spkr_pcppi_attach(device_t, device_t, void *); 74 static int spkr_pcppi_detach(device_t, int); 75 static int spkr_pcppi_rescan(device_t, const char *, const int *); 76 static void spkr_pcppi_childdet(device_t, device_t); 77 78 CFATTACH_DECL3_NEW(spkr_pcppi, sizeof(struct spkr_pcppi_softc), 79 spkr_pcppi_probe, spkr_pcppi_attach, spkr_pcppi_detach, NULL, 80 spkr_pcppi_rescan, spkr_pcppi_childdet, 0); 81 82 #define SPKRPRI (PZERO - 1) 83 84 /* emit tone of frequency hz for given number of ticks */ 85 static void 86 spkr_pcppi_tone(device_t self, u_int xhz, u_int ticks) 87 { 88 #ifdef SPKRDEBUG 89 aprint_debug_dev(self, "%s: %u %u\n", __func__, xhz, ticks); 90 #endif /* SPKRDEBUG */ 91 struct spkr_pcppi_softc *sc = device_private(self); 92 (*sc->sc_bell_func)(sc->sc_pcppicookie, xhz, ticks, PCPPI_BELL_SLEEP); 93 } 94 95 /* rest for given number of ticks */ 96 static void 97 spkr_pcppi_rest(device_t self, int ticks) 98 { 99 /* 100 * Set timeout to endrest function, then give up the timeslice. 101 * This is so other processes can execute while the rest is being 102 * waited out. 103 */ 104 #ifdef SPKRDEBUG 105 aprint_debug_dev(self, "%s: %d\n", __func__, ticks); 106 #endif /* SPKRDEBUG */ 107 if (ticks > 0) 108 tsleep(self, SPKRPRI | PCATCH, device_xname(self), ticks); 109 } 110 111 static int 112 spkr_pcppi_probe(device_t parent, cfdata_t cf, void *aux) 113 { 114 return 1; 115 } 116 117 static void 118 spkr_pcppi_attach(device_t parent, device_t self, void *aux) 119 { 120 struct pcppi_attach_args *pa = aux; 121 struct spkr_pcppi_softc *sc = device_private(self); 122 123 aprint_naive("\n"); 124 aprint_normal(": PC Speaker\n"); 125 126 sc->sc_pcppicookie = pa->pa_cookie; 127 sc->sc_bell_func = pa->pa_bell_func; 128 spkr_attach(self, spkr_pcppi_tone, spkr_pcppi_rest); 129 if (!pmf_device_register(self, NULL, NULL)) 130 aprint_error_dev(self, "couldn't establish power handler\n"); 131 } 132 133 static int 134 spkr_pcppi_detach(device_t self, int flags) 135 { 136 struct spkr_pcppi_softc *sc = device_private(self); 137 int error; 138 139 if ((error = spkr_detach(self, flags)) != 0) 140 return error; 141 142 sc->sc_pcppicookie = NULL; 143 pmf_device_deregister(self); 144 return 0; 145 } 146 147 static int 148 spkr_pcppi_rescan(device_t self, const char *iattr, const int *locators) 149 { 150 151 return spkr_rescan(self, iattr, locators); 152 } 153 154 static void 155 spkr_pcppi_childdet(device_t self, device_t child) 156 { 157 158 spkr_childdet(self, child); 159 } 160