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spkr_pcppi.c revision 1.9.6.2
      1  1.9.6.2  skrll /*	$NetBSD: spkr_pcppi.c,v 1.9.6.2 2017/02/05 13:40:28 skrll Exp $	*/
      2  1.9.6.2  skrll 
      3  1.9.6.2  skrll /*
      4  1.9.6.2  skrll  * Copyright (c) 1990 Eric S. Raymond (esr (at) snark.thyrsus.com)
      5  1.9.6.2  skrll  * Copyright (c) 1990 Andrew A. Chernov (ache (at) astral.msk.su)
      6  1.9.6.2  skrll  * Copyright (c) 1990 Lennart Augustsson (lennart (at) augustsson.net)
      7  1.9.6.2  skrll  * All rights reserved.
      8  1.9.6.2  skrll  *
      9  1.9.6.2  skrll  * Redistribution and use in source and binary forms, with or without
     10  1.9.6.2  skrll  * modification, are permitted provided that the following conditions
     11  1.9.6.2  skrll  * are met:
     12  1.9.6.2  skrll  * 1. Redistributions of source code must retain the above copyright
     13  1.9.6.2  skrll  *    notice, this list of conditions and the following disclaimer.
     14  1.9.6.2  skrll  * 2. Redistributions in binary form must reproduce the above copyright
     15  1.9.6.2  skrll  *    notice, this list of conditions and the following disclaimer in the
     16  1.9.6.2  skrll  *    documentation and/or other materials provided with the distribution.
     17  1.9.6.2  skrll  * 3. All advertising materials mentioning features or use of this software
     18  1.9.6.2  skrll  *    must display the following acknowledgement:
     19  1.9.6.2  skrll  *	This product includes software developed by Eric S. Raymond
     20  1.9.6.2  skrll  * 4. The name of the author may not be used to endorse or promote products
     21  1.9.6.2  skrll  *    derived from this software without specific prior written permission.
     22  1.9.6.2  skrll  *
     23  1.9.6.2  skrll  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     24  1.9.6.2  skrll  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     25  1.9.6.2  skrll  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     26  1.9.6.2  skrll  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
     27  1.9.6.2  skrll  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     28  1.9.6.2  skrll  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     29  1.9.6.2  skrll  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  1.9.6.2  skrll  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     31  1.9.6.2  skrll  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     32  1.9.6.2  skrll  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     33  1.9.6.2  skrll  * POSSIBILITY OF SUCH DAMAGE.
     34  1.9.6.2  skrll  */
     35  1.9.6.2  skrll 
     36  1.9.6.2  skrll /*
     37  1.9.6.2  skrll  * spkr.c -- device driver for console speaker on 80386
     38  1.9.6.2  skrll  *
     39  1.9.6.2  skrll  * v1.1 by Eric S. Raymond (esr (at) snark.thyrsus.com) Feb 1990
     40  1.9.6.2  skrll  *      modified for 386bsd by Andrew A. Chernov <ache (at) astral.msk.su>
     41  1.9.6.2  skrll  *      386bsd only clean version, all SYSV stuff removed
     42  1.9.6.2  skrll  *      use hz value from param.c
     43  1.9.6.2  skrll  */
     44  1.9.6.2  skrll 
     45  1.9.6.2  skrll #include <sys/cdefs.h>
     46  1.9.6.2  skrll __KERNEL_RCSID(0, "$NetBSD: spkr_pcppi.c,v 1.9.6.2 2017/02/05 13:40:28 skrll Exp $");
     47  1.9.6.2  skrll 
     48  1.9.6.2  skrll #include <sys/param.h>
     49  1.9.6.2  skrll #include <sys/systm.h>
     50  1.9.6.2  skrll #include <sys/kernel.h>
     51  1.9.6.2  skrll #include <sys/errno.h>
     52  1.9.6.2  skrll #include <sys/device.h>
     53  1.9.6.2  skrll #include <sys/malloc.h>
     54  1.9.6.2  skrll #include <sys/uio.h>
     55  1.9.6.2  skrll #include <sys/proc.h>
     56  1.9.6.2  skrll #include <sys/ioctl.h>
     57  1.9.6.2  skrll #include <sys/conf.h>
     58  1.9.6.2  skrll 
     59  1.9.6.2  skrll #include <sys/bus.h>
     60  1.9.6.2  skrll 
     61  1.9.6.2  skrll #include <dev/isa/pcppivar.h>
     62  1.9.6.2  skrll 
     63  1.9.6.2  skrll #include <dev/spkrvar.h>
     64  1.9.6.2  skrll #include <dev/spkrio.h>
     65  1.9.6.2  skrll 
     66  1.9.6.2  skrll struct spkr_pcppi_softc {
     67  1.9.6.2  skrll 	struct spkr_softc sc_spkr;
     68  1.9.6.2  skrll 	pcppi_tag_t sc_pcppicookie;
     69  1.9.6.2  skrll };
     70  1.9.6.2  skrll 
     71  1.9.6.2  skrll static int spkr_pcppi_probe(device_t, cfdata_t, void *);
     72  1.9.6.2  skrll static void spkr_pcppi_attach(device_t, device_t, void *);
     73  1.9.6.2  skrll static int spkr_pcppi_detach(device_t, int);
     74  1.9.6.2  skrll 
     75  1.9.6.2  skrll CFATTACH_DECL_NEW(spkr_pcppi, sizeof(struct spkr_pcppi_softc),
     76  1.9.6.2  skrll     spkr_pcppi_probe, spkr_pcppi_attach, spkr_pcppi_detach, NULL);
     77  1.9.6.2  skrll 
     78  1.9.6.2  skrll #define SPKRPRI (PZERO - 1)
     79  1.9.6.2  skrll 
     80  1.9.6.2  skrll /* emit tone of frequency hz for given number of ticks */
     81  1.9.6.2  skrll static void
     82  1.9.6.2  skrll spkr_pcppi_tone(device_t self, u_int xhz, u_int ticks)
     83  1.9.6.2  skrll {
     84  1.9.6.2  skrll #ifdef SPKRDEBUG
     85  1.9.6.2  skrll 	aprint_debug_dev(self, "%s: %u %u\n", __func__, xhz, ticks);
     86  1.9.6.2  skrll #endif /* SPKRDEBUG */
     87  1.9.6.2  skrll 	struct spkr_pcppi_softc *sc = device_private(self);
     88  1.9.6.2  skrll 	pcppi_bell(sc->sc_pcppicookie, xhz, ticks, PCPPI_BELL_SLEEP);
     89  1.9.6.2  skrll }
     90  1.9.6.2  skrll 
     91  1.9.6.2  skrll /* rest for given number of ticks */
     92  1.9.6.2  skrll static void
     93  1.9.6.2  skrll spkr_pcppi_rest(device_t self, int ticks)
     94  1.9.6.2  skrll {
     95  1.9.6.2  skrll 	/*
     96  1.9.6.2  skrll 	 * Set timeout to endrest function, then give up the timeslice.
     97  1.9.6.2  skrll 	 * This is so other processes can execute while the rest is being
     98  1.9.6.2  skrll 	 * waited out.
     99  1.9.6.2  skrll 	 */
    100  1.9.6.2  skrll #ifdef SPKRDEBUG
    101  1.9.6.2  skrll 	aprint_debug_dev(self, "%s: %d\n", __func__, ticks);
    102  1.9.6.2  skrll #endif /* SPKRDEBUG */
    103  1.9.6.2  skrll 	if (ticks > 0)
    104  1.9.6.2  skrll 		tsleep(self, SPKRPRI | PCATCH, device_xname(self), ticks);
    105  1.9.6.2  skrll }
    106  1.9.6.2  skrll 
    107  1.9.6.2  skrll static int
    108  1.9.6.2  skrll spkr_pcppi_probe(device_t parent, cfdata_t cf, void *aux)
    109  1.9.6.2  skrll {
    110  1.9.6.2  skrll 	return 1;
    111  1.9.6.2  skrll }
    112  1.9.6.2  skrll 
    113  1.9.6.2  skrll static void
    114  1.9.6.2  skrll spkr_pcppi_attach(device_t parent, device_t self, void *aux)
    115  1.9.6.2  skrll {
    116  1.9.6.2  skrll 	struct pcppi_attach_args *pa = aux;
    117  1.9.6.2  skrll 	struct spkr_pcppi_softc *sc = device_private(self);
    118  1.9.6.2  skrll 
    119  1.9.6.2  skrll 	aprint_naive("\n");
    120  1.9.6.2  skrll 	aprint_normal(": PC Speaker\n");
    121  1.9.6.2  skrll 
    122  1.9.6.2  skrll 	sc->sc_pcppicookie = pa->pa_cookie;
    123  1.9.6.2  skrll 	spkr_attach(self, spkr_pcppi_tone, spkr_pcppi_rest);
    124  1.9.6.2  skrll 	if (!pmf_device_register(self, NULL, NULL))
    125  1.9.6.2  skrll 		aprint_error_dev(self, "couldn't establish power handler\n");
    126  1.9.6.2  skrll }
    127  1.9.6.2  skrll 
    128  1.9.6.2  skrll static int
    129  1.9.6.2  skrll spkr_pcppi_detach(device_t self, int flags)
    130  1.9.6.2  skrll {
    131  1.9.6.2  skrll 	struct spkr_pcppi_softc *sc = device_private(self);
    132  1.9.6.2  skrll 	int error;
    133  1.9.6.2  skrll 
    134  1.9.6.2  skrll 	if ((error = spkr_detach(self, flags)) != 0)
    135  1.9.6.2  skrll 		return error;
    136  1.9.6.2  skrll 
    137  1.9.6.2  skrll 	sc->sc_pcppicookie = NULL;
    138  1.9.6.2  skrll 	pmf_device_deregister(self);
    139  1.9.6.2  skrll 	return 0;
    140  1.9.6.2  skrll }
    141