8a962f23f2
the original ad-audiomp branch notes: Add MP locking to the audio drivers. Making the audio drivers MP safe is necessary before efforts can be made to make the VM system MP safe. The are two locks per device instance, an ISR lock and a character device lock. The ISR lock replaces calls to splaudio()/splx(), and will be held across calls to device methods which were called at splaudio() before (e.g. trigger_output). The character device lock is held across calls to nearly all of the methods, excluding some only used for initialization, e.g. get_locks. Welcome to 5.99.57.
121 lines
3.3 KiB
C
121 lines
3.3 KiB
C
/* $NetBSD: joy_acpi.c,v 1.11 2011/11/23 23:07:31 jmcneill Exp $ */
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/*
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* Copyright (c) 2002 Jared D. McNeill <jmcneill@invisible.ca>
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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. 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,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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/*
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* ACPI joy(4) attachment based in lpt_acpi.c by Jared D. McNeill.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: joy_acpi.c,v 1.11 2011/11/23 23:07:31 jmcneill Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <dev/acpi/acpivar.h>
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#include <dev/ic/joyvar.h>
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static int joy_acpi_match(device_t, cfdata_t, void *);
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static void joy_acpi_attach(device_t, device_t, void *);
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struct joy_acpi_softc {
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struct joy_softc sc_joy;
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kmutex_t sc_lock;
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};
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CFATTACH_DECL_NEW(joy_acpi, sizeof(struct joy_acpi_softc), joy_acpi_match,
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joy_acpi_attach, NULL, NULL);
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/*
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* Supported device IDs
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*/
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static const char * const joy_acpi_ids[] = {
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"PNPB02F", /* Joystick/Game port */
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NULL
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};
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/*
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* joy_acpi_match: autoconf(9) match routine
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*/
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static int
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joy_acpi_match(device_t parent, cfdata_t match, void *aux)
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{
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struct acpi_attach_args *aa = aux;
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if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
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return 0;
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return acpi_match_hid(aa->aa_node->ad_devinfo, joy_acpi_ids);
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}
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/*
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* joy_acpi_attach: autoconf(9) attach routine
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*/
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static void
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joy_acpi_attach(device_t parent, device_t self, void *aux)
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{
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struct joy_acpi_softc *asc = device_private(self);
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struct joy_softc *sc = &asc->sc_joy;
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struct acpi_attach_args *aa = aux;
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struct acpi_resources res;
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struct acpi_io *io;
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ACPI_STATUS rv;
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sc->sc_dev = self;
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/* parse resources */
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rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
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&res, &acpi_resource_parse_ops_default);
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if (ACPI_FAILURE(rv))
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return;
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/* find our i/o registers */
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io = acpi_res_io(&res, 0);
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if (io == NULL) {
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aprint_error_dev(self,
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"unable to find i/o register resource\n");
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goto out;
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}
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sc->sc_iot = aa->aa_iot;
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if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length,
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0, &sc->sc_ioh)) {
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aprint_error_dev(self, "can't map i/o space\n");
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goto out;
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}
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mutex_init(&asc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
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sc->sc_lock = &asc->sc_lock;
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joyattach(sc);
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out:
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acpi_resource_cleanup(&res);
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}
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