521 lines
14 KiB
C
521 lines
14 KiB
C
/* $NetBSD: wsbell.c,v 1.14 2022/03/31 19:30:17 pgoyette Exp $ */
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/*-
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* Copyright (c) 2017 Nathanial Sloss <nathanialsloss@yahoo.com.au>
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* All rights reserved.
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*
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* Copyright (c) 2006 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Julio M. Merino Vidal.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ms.c 8.1 (Berkeley) 6/11/93
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*/
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/*
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* Keyboard Bell driver.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: wsbell.c,v 1.14 2022/03/31 19:30:17 pgoyette Exp $");
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#if defined(_KERNEL_OPT)
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#include "wsmux.h"
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#endif
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/ioctl.h>
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#include <sys/poll.h>
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#include <sys/fcntl.h>
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#include <sys/kernel.h>
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#include <sys/condvar.h>
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#include <sys/mutex.h>
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#include <sys/kauth.h>
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#include <sys/kthread.h>
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#include <sys/proc.h>
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#include <sys/syslog.h>
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#include <sys/systm.h>
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#include <sys/tty.h>
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#include <sys/signalvar.h>
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#include <sys/device.h>
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#include <sys/vnode.h>
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#include <sys/callout.h>
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#include <sys/module.h>
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#include <dev/wscons/wsconsio.h>
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#include <dev/wscons/wsbellvar.h>
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#include <dev/wscons/wsbellmuxvar.h>
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#include <dev/wscons/wsbelldata.h>
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#include <dev/spkrio.h>
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#include "ioconf.h"
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#if defined(WSMUX_DEBUG) && NWSMUX > 0
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#define DPRINTF(x) if (wsmuxdebug) printf x
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#define DPRINTFN(n,x) if (wsmuxdebug > (n)) printf x
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extern int wsmuxdebug;
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#else
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#define DPRINTF(x)
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#define DPRINTFN(n,x)
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#endif
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static void bell_thread(void *);
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static inline void spkr_audio_play(struct wsbell_softc *, u_int, u_int, u_int);
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static int wsbell_match(device_t, cfdata_t, void *);
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static void wsbell_attach(device_t, device_t, void *);
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static int wsbell_detach(device_t, int);
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static int wsbell_activate(device_t, enum devact);
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#if NWSMUX > 0
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static int wsbell_mux_open(struct wsevsrc *, struct wseventvar *);
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static int wsbell_mux_close(struct wsevsrc *);
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static int wsbelldoopen(struct wsbell_softc *, struct wseventvar *);
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static int wsbelldoioctl(device_t, u_long, void *, int, struct lwp *);
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static int wsbell_do_ioctl(struct wsbell_softc *, u_long, void *,
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int, struct lwp *);
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#endif
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CFATTACH_DECL_NEW(wsbell, sizeof (struct wsbell_softc),
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wsbell_match, wsbell_attach, wsbell_detach, wsbell_activate);
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extern dev_type_open(spkropen);
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extern dev_type_close(spkrclose);
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extern dev_type_ioctl(spkrioctl);
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const struct cdevsw wsbell_cdevsw = {
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.d_open = noopen,
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.d_close = noclose,
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.d_read = noread,
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.d_write = nowrite,
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.d_ioctl = noioctl,
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.d_stop = nostop,
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.d_tty = notty,
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.d_poll = nopoll,
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.d_mmap = nommap,
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.d_kqfilter = nokqfilter,
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.d_discard = nodiscard,
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.d_flag = D_OTHER
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};
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#if NWSMUX > 0
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struct wssrcops wsbell_srcops = {
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WSMUX_BELL,
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wsbell_mux_open, wsbell_mux_close, wsbelldoioctl, wsbelldoioctl, NULL
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};
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#endif
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int
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wsbell_match(device_t parent, cfdata_t match, void *aux)
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{
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return (1);
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}
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void
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wsbell_attach(device_t parent, device_t self, void *aux)
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{
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struct wsbell_softc *sc = device_private(self);
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struct wsbelldev_attach_args *ap = aux;
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#if NWSMUX > 0
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int mux, error;
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#endif
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sc->sc_base.me_dv = self;
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sc->sc_accesscookie = ap->accesscookie;
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sc->sc_dying = false;
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sc->sc_spkr = device_unit(parent);
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sc->sc_bell_data = wskbd_default_bell_data;
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#if NWSMUX > 0
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sc->sc_base.me_ops = &wsbell_srcops;
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mux = device_cfdata(self)->wsbelldevcf_mux;
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if (mux >= 0) {
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error = wsmux_attach_sc(wsmux_getmux(mux), &sc->sc_base);
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if (error)
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aprint_error(" attach error=%d", error);
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else
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aprint_normal(" mux %d", mux);
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}
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#else
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if (device_cfdata(self)->wsbelldevcf_mux >= 0)
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aprint_normal(" (mux ignored)");
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#endif
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aprint_naive("\n");
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aprint_normal("\n");
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if (!pmf_device_register(self, NULL, NULL))
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aprint_error_dev(self, "couldn't establish power handler\n");
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mutex_init(&sc->sc_bellock, MUTEX_DEFAULT, IPL_SCHED);
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cv_init(&sc->sc_bellcv, "bellcv");
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kthread_create(PRI_BIO, KTHREAD_MPSAFE | KTHREAD_MUSTJOIN, NULL,
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bell_thread, sc, &sc->sc_bellthread, "%s", device_xname(self));
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}
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int
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wsbell_activate(device_t self, enum devact act)
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{
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struct wsbell_softc *sc = device_private(self);
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if (act == DVACT_DEACTIVATE)
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sc->sc_dying = true;
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return (0);
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}
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int
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wsbell_detach(device_t self, int flags)
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{
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struct wsbell_softc *sc = device_private(self);
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struct wseventvar *evar;
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int maj, mn;
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int s;
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#if NWSMUX > 0
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/* Tell parent mux we're leaving. */
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if (sc->sc_base.me_parent != NULL) {
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DPRINTF(("wsbell_detach:\n"));
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wsmux_detach_sc(&sc->sc_base);
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}
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#endif
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/* If we're open ... */
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evar = sc->sc_base.me_evp;
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if (evar != NULL && evar->io != NULL) {
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s = spltty();
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if (--sc->sc_refcnt >= 0) {
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struct wscons_event event;
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/* Wake everyone by generating a dummy event. */
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event.type = 0;
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event.value = 0;
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if (wsevent_inject(evar, &event, 1) != 0)
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wsevent_wakeup(evar);
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/* Wait for processes to go away. */
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if (tsleep(sc, PZERO, "wsmdet", hz * 60))
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printf("wsbell_detach: %s didn't detach\n",
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device_xname(self));
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}
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splx(s);
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}
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/* locate the major number */
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maj = cdevsw_lookup_major(&wsbell_cdevsw);
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/* Nuke the vnodes for any open instances (calls close). */
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mn = device_unit(self);
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vdevgone(maj, mn, mn, VCHR);
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mutex_enter(&sc->sc_bellock);
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sc->sc_dying = true;
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cv_broadcast(&sc->sc_bellcv);
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mutex_exit(&sc->sc_bellock);
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kthread_join(sc->sc_bellthread);
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cv_destroy(&sc->sc_bellcv);
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mutex_destroy(&sc->sc_bellock);
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return (0);
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}
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#if NWSMUX > 0
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int
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wsbelldoopen(struct wsbell_softc *sc, struct wseventvar *evp)
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{
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return (0);
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}
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/* A wrapper around the ioctl() workhorse to make reference counting easy. */
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int
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wsbelldoioctl(device_t dv, u_long cmd, void *data, int flag,
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struct lwp *l)
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{
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struct wsbell_softc *sc = device_private(dv);
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int error;
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sc->sc_refcnt++;
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error = wsbell_do_ioctl(sc, cmd, data, flag, l);
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if (--sc->sc_refcnt < 0)
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wakeup(sc);
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return (error);
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}
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int
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wsbell_do_ioctl(struct wsbell_softc *sc, u_long cmd, void *data,
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int flag, struct lwp *l)
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{
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struct wskbd_bell_data *ubdp, *kbdp;
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int error;
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if (sc->sc_dying == true)
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return (EIO);
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/*
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* Try the wsbell specific ioctls.
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*/
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switch (cmd) {
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case WSKBDIO_SETBELL:
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if ((flag & FWRITE) == 0)
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return (EACCES);
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kbdp = &sc->sc_bell_data;
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setbell:
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ubdp = (struct wskbd_bell_data *)data;
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SETBELL(kbdp, ubdp, kbdp);
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return (0);
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case WSKBDIO_GETBELL:
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kbdp = &sc->sc_bell_data;
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getbell:
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ubdp = (struct wskbd_bell_data *)data;
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SETBELL(ubdp, kbdp, kbdp);
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return (0);
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case WSKBDIO_SETDEFAULTBELL:
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if ((error = kauth_authorize_device(l->l_cred,
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KAUTH_DEVICE_WSCONS_KEYBOARD_BELL, NULL, NULL,
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NULL, NULL)) != 0)
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return (error);
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kbdp = &wskbd_default_bell_data;
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goto setbell;
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case WSKBDIO_GETDEFAULTBELL:
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kbdp = &wskbd_default_bell_data;
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goto getbell;
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case WSKBDIO_BELL:
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if ((flag & FWRITE) == 0)
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return (EACCES);
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spkr_audio_play(sc, sc->sc_bell_data.pitch,
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sc->sc_bell_data.period, sc->sc_bell_data.volume);
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return 0;
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case WSKBDIO_COMPLEXBELL:
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if ((flag & FWRITE) == 0)
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return (EACCES);
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if (data == NULL)
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return 0;
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ubdp = (struct wskbd_bell_data *)data;
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SETBELL(ubdp, ubdp, &sc->sc_bell_data);
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spkr_audio_play(sc, ubdp->pitch, ubdp->period, ubdp->volume);
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return 0;
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}
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return (EPASSTHROUGH);
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}
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#endif
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static void
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bell_thread(void *arg)
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{
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struct wsbell_softc *sc = arg;
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struct vbell_args *vb = &sc->sc_bell_args;
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tone_t tone;
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u_int vol;
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for (;;) {
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mutex_enter(&sc->sc_bellock);
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cv_wait_sig(&sc->sc_bellcv, &sc->sc_bellock);
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if (sc->sc_dying == true) {
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mutex_exit(&sc->sc_bellock);
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kthread_exit(0);
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}
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tone.frequency = vb->pitch;
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/*
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* period (derived from wskbd) is in msec.
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* duration (derived from spkr) is in units of 10msec.
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*/
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tone.duration = vb->period / 10;
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vol = vb->volume;
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mutex_exit(&sc->sc_bellock);
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if (spkropen(sc->sc_spkr, FWRITE, 0, NULL) != 0)
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continue;
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spkrioctl(sc->sc_spkr, SPKRSETVOL, &vol, 0, curlwp);
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spkrioctl(sc->sc_spkr, SPKRTONE, &tone, 0, curlwp);
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spkrclose(sc->sc_spkr, FWRITE, 0, curlwp);
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}
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}
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static inline void
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spkr_audio_play(struct wsbell_softc *sc, u_int pitch, u_int period, u_int volume)
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{
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mutex_enter(&sc->sc_bellock);
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sc->sc_bell_args.pitch = pitch;
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sc->sc_bell_args.period = period;
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sc->sc_bell_args.volume = volume;
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cv_broadcast(&sc->sc_bellcv);
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mutex_exit(&sc->sc_bellock);
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}
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#if NWSMUX > 0
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int
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wsbell_mux_open(struct wsevsrc *me, struct wseventvar *evp)
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{
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struct wsbell_softc *sc = (struct wsbell_softc *)me;
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if (sc->sc_base.me_evp != NULL)
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return (EBUSY);
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return wsbelldoopen(sc, evp);
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}
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int
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wsbell_mux_close(struct wsevsrc *me)
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{
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struct wsbell_softc *sc = (struct wsbell_softc *)me;
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sc->sc_base.me_evp = NULL;
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return (0);
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}
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#endif /* NWSMUX > 0 */
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MODULE(MODULE_CLASS_DRIVER, wsbell, "spkr");
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#ifdef _MODULE
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int wsbell_bmajor = -1, wsbell_cmajor = -1;
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#include "ioconf.c"
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#endif
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static int
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wsbell_modcmd(modcmd_t cmd, void *arg)
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{
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int error = 0;
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switch (cmd) {
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case MODULE_CMD_INIT:
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#ifdef _MODULE
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error = devsw_attach("wsbell", NULL, &wsbell_bmajor,
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&wsbell_cdevsw, &wsbell_cmajor);
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if (error)
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break;
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error = config_init_component(cfdriver_ioconf_wsbell,
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cfattach_ioconf_wsbell, cfdata_ioconf_wsbell);
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if (error)
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devsw_detach(NULL, &wsbell_cdevsw);
|
|
#endif
|
|
break;
|
|
|
|
case MODULE_CMD_FINI:
|
|
#ifdef _MODULE
|
|
error = config_fini_component(cfdriver_ioconf_wsbell,
|
|
cfattach_ioconf_wsbell, cfdata_ioconf_wsbell);
|
|
if (error == 0)
|
|
devsw_detach(NULL, &wsbell_cdevsw);
|
|
#endif
|
|
break;
|
|
|
|
default:
|
|
error = ENOTTY;
|
|
break;
|
|
}
|
|
|
|
return error;
|
|
}
|