177 lines
4.7 KiB
C
177 lines
4.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2015 Landon Fuller <landon@landonf.org>
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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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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR 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
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* IN 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
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* THE POSSIBILITY OF SUCH DAMAGES.
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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/kernel.h>
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#include <sys/bus.h>
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#include <sys/module.h>
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#include <dev/bhnd/bhnd_ids.h>
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#include <dev/bhnd/bhndb/bhndbvar.h>
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#include <dev/bhnd/bhndb/bhndb_hwdata.h>
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#include "bcmavar.h"
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#include "bcma_eromreg.h"
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#include "bcma_eromvar.h"
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/*
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* Supports attachment of bcma(4) bus devices via a bhndb bridge.
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*/
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static int
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bcma_bhndb_probe(device_t dev)
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{
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const struct bhnd_chipid *cid;
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int error;
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/* Defer to default probe implementation */
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if ((error = bcma_probe(dev)) > 0)
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return (error);
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/* Check bus type */
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cid = BHNDB_GET_CHIPID(device_get_parent(dev), dev);
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if (cid->chip_type != BHND_CHIPTYPE_BCMA)
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return (ENXIO);
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/* Set device description */
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bhnd_set_default_bus_desc(dev, cid);
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return (error);
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}
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static int
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bcma_bhndb_attach(device_t dev)
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{
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int error;
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/* Perform initial attach and enumerate our children. */
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if ((error = bcma_attach(dev)))
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goto failed;
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/* Delegate remainder to standard bhnd method implementation */
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if ((error = bhnd_generic_attach(dev)))
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goto failed;
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return (0);
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failed:
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device_delete_children(dev);
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return (error);
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}
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static int
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bcma_bhndb_suspend_child(device_t dev, device_t child)
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{
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struct bcma_devinfo *dinfo;
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int error;
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if (device_get_parent(child) != dev)
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BUS_SUSPEND_CHILD(device_get_parent(dev), child);
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if (device_is_suspended(child))
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return (EBUSY);
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dinfo = device_get_ivars(child);
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/* Suspend the child */
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if ((error = bhnd_generic_br_suspend_child(dev, child)))
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return (error);
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/* Suspend child's agent resource */
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if (dinfo->res_agent != NULL)
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BHNDB_SUSPEND_RESOURCE(device_get_parent(dev), dev,
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SYS_RES_MEMORY, dinfo->res_agent->res);
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return (0);
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}
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static int
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bcma_bhndb_resume_child(device_t dev, device_t child)
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{
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struct bcma_devinfo *dinfo;
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int error;
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if (device_get_parent(child) != dev)
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BUS_SUSPEND_CHILD(device_get_parent(dev), child);
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if (!device_is_suspended(child))
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return (EBUSY);
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dinfo = device_get_ivars(child);
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/* Resume child's agent resource */
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if (dinfo->res_agent != NULL) {
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error = BHNDB_RESUME_RESOURCE(device_get_parent(dev), dev,
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SYS_RES_MEMORY, dinfo->res_agent->res);
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if (error)
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return (error);
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}
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/* Resume the child */
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if ((error = bhnd_generic_br_resume_child(dev, child))) {
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/* On failure, re-suspend the agent resource */
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if (dinfo->res_agent != NULL) {
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BHNDB_SUSPEND_RESOURCE(device_get_parent(dev), dev,
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SYS_RES_MEMORY, dinfo->res_agent->res);
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}
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return (error);
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}
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return (0);
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}
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static device_method_t bcma_bhndb_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, bcma_bhndb_probe),
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DEVMETHOD(device_attach, bcma_bhndb_attach),
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/* Bus interface */
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DEVMETHOD(bus_suspend_child, bcma_bhndb_suspend_child),
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DEVMETHOD(bus_resume_child, bcma_bhndb_resume_child),
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DEVMETHOD_END
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};
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DEFINE_CLASS_2(bhnd, bcma_bhndb_driver, bcma_bhndb_methods,
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sizeof(struct bcma_softc), bhnd_bhndb_driver, bcma_driver);
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DRIVER_MODULE(bcma_bhndb, bhndb, bcma_bhndb_driver, bhnd_devclass, NULL, NULL);
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MODULE_VERSION(bcma_bhndb, 1);
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MODULE_DEPEND(bcma_bhndb, bcma, 1, 1, 1);
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MODULE_DEPEND(bcma_bhndb, bhnd, 1, 1, 1);
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MODULE_DEPEND(bcma_bhndb, bhndb, 1, 1, 1);
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