ca38cd4da4
methods so that MI drvers can depend on us doing the right thing instead of having to go around us and call MD code directly. See the FDT code for example (not for long though).
202 lines
6.3 KiB
C
202 lines
6.3 KiB
C
/*-
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* Copyright 1998 Massachusetts Institute of Technology
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose and without fee is hereby
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* granted, provided that both the above copyright notice and this
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* permission notice appear in all copies, that both the above
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* copyright notice and this permission notice appear in all
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* supporting documentation, and that the name of M.I.T. not be used
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* in advertising or publicity pertaining to distribution of the
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* software without specific, written prior permission. M.I.T. makes
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied
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* warranty.
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*
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* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
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* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
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* SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* 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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* Copyright 2001 by Thomas Moestl <tmm@FreeBSD.org>. 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 AUTHOR 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 AUTHOR 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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* from: FreeBSD: src/sys/i386/i386/nexus.c,v 1.43 2001/02/09
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/cons.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/rman.h>
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#include <machine/intr_machdep.h>
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/*
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* Device interface
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*/
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static int nexus_probe(device_t);
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static int nexus_attach(device_t);
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static int nexus_activate_resource(device_t, device_t, int, int,
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struct resource *);
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static int nexus_deactivate_resource(device_t, device_t, int, int,
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struct resource *);
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static int nexus_config_intr(device_t, int, enum intr_trigger,
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enum intr_polarity);
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static int nexus_setup_intr(device_t, device_t, struct resource *, int,
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driver_filter_t *, driver_intr_t *, void *, void **);
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static int nexus_teardown_intr(device_t, device_t, struct resource *,
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void *);
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static device_method_t nexus_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, nexus_probe),
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DEVMETHOD(device_attach, nexus_attach),
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DEVMETHOD(device_detach, bus_generic_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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/* Bus interface. Resource management is business of the children... */
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DEVMETHOD(bus_add_child, bus_generic_add_child),
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DEVMETHOD(bus_probe_nomatch, NULL),
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DEVMETHOD(bus_read_ivar, NULL),
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DEVMETHOD(bus_write_ivar, NULL),
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DEVMETHOD(bus_config_intr, nexus_config_intr),
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DEVMETHOD(bus_setup_intr, nexus_setup_intr),
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DEVMETHOD(bus_teardown_intr, nexus_teardown_intr),
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DEVMETHOD(bus_alloc_resource, NULL),
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DEVMETHOD(bus_activate_resource, nexus_activate_resource),
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DEVMETHOD(bus_deactivate_resource, nexus_deactivate_resource),
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DEVMETHOD(bus_release_resource, NULL),
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DEVMETHOD_END
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};
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static driver_t nexus_driver = {
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"nexus",
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nexus_methods
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};
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static devclass_t nexus_devclass;
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DRIVER_MODULE(nexus, root, nexus_driver, nexus_devclass, 0, 0);
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static int
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nexus_probe(device_t dev)
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{
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if (!bootverbose)
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device_quiet(dev);
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return (BUS_PROBE_DEFAULT);
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}
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static int
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nexus_attach(device_t dev)
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{
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bus_generic_probe(dev);
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bus_generic_attach(dev);
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return (0);
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}
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static int
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nexus_activate_resource(device_t bus, device_t child, int type, int rid,
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struct resource *res)
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{
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/* Not much to be done yet... */
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return (rman_activate_resource(res));
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}
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static int
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nexus_deactivate_resource(device_t bus, device_t child, int type, int rid,
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struct resource *res)
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{
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/* Not much to be done yet... */
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return (rman_deactivate_resource(res));
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}
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static int
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nexus_config_intr(device_t bus, int irq, enum intr_trigger trig,
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enum intr_polarity pol)
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{
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return (powerpc_config_intr(irq, trig, pol));
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}
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static int
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nexus_setup_intr(device_t bus, device_t child, struct resource *res, int flags,
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driver_filter_t *ifilt, driver_intr_t *ihand, void *arg, void **cookiep)
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{
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int error;
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*cookiep = NULL;
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/* somebody tried to setup an irq that failed to allocate! */
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if (res == NULL)
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return (EINVAL);
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if ((rman_get_flags(res) & RF_SHAREABLE) == 0)
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flags |= INTR_EXCL;
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/* We depend on rman_activate_resource() being idempotent. */
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error = rman_activate_resource(res);
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if (error)
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return (error);
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error = powerpc_setup_intr(device_get_nameunit(child),
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rman_get_start(res), ifilt, ihand, arg, flags, cookiep);
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return (error);
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}
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static int
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nexus_teardown_intr(device_t bus, device_t child, struct resource *res,
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void *cookie)
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{
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int error;
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if (res == NULL)
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return (EINVAL);
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error = powerpc_teardown_intr(cookie);
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return (error);
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}
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