1de2a73134
corresponding attimer(4) resource is not perpetually busy: now it is possible to detach and to reattach pcppi(4). Make attimer(4)'s device-detachment hook return EBUSY if pcppi(4) is still attached, so that pcppi(4) cannot end up with a dangling pointer to attimer(4).
44 lines
1.8 KiB
C
44 lines
1.8 KiB
C
/* $NetBSD: attimervar.h,v 1.7 2009/04/07 22:30:09 dyoung Exp $ */
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/*
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* Copyright (c) 2005 The NetBSD Foundation.
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* 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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*
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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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struct attimer_softc {
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device_t sc_dev;
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uint32_t sc_flags;
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#define ATT_ATTACHED 0x01
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#define ATT_CONFIGURED 0x02
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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bus_size_t sc_size;
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};
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void attimer_attach(struct attimer_softc *);
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int attimer_detach(device_t, int);
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device_t attimer_attach_speaker(void);
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void attimer_detach_speaker(device_t);
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void attimer_set_pitch(device_t, int);
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