/*- * Copyright (c) 2015 Landon Fuller * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any * redistribution must be conditioned upon including a substantially * similar Disclaimer requirement for further binary redistribution. * * NO WARRANTY * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGES. */ #include __FBSDID("$FreeBSD: head/sys/dev/bhnd/bcma/bcma_bhndb.c 299996 2016-05-17 00:23:46Z adrian $"); #include #include #include #include #include #include #include #include "bcmavar.h" #include "bcma_eromreg.h" #include "bcma_eromvar.h" /* * Supports attachment of bcma(4) bus devices via a bhndb bridge. */ static int bcma_bhndb_probe(device_t dev) { const struct bhnd_chipid *cid; /* Check bus type */ cid = BHNDB_GET_CHIPID(device_get_parent(dev), dev); if (cid->chip_type != BHND_CHIPTYPE_BCMA) return (ENXIO); /* Delegate to default probe implementation */ return (bcma_probe(dev)); } static int bcma_bhndb_attach(device_t dev) { struct bcma_softc *sc; const struct bhnd_chipid *cid; struct resource *erom_res; int error; int rid; sc = device_get_softc(dev); /* Map the EROM resource and enumerate our children. */ cid = BHNDB_GET_CHIPID(device_get_parent(dev), dev); rid = 0; erom_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, cid->enum_addr, cid->enum_addr + BCMA_EROM_TABLE_SIZE, BCMA_EROM_TABLE_SIZE, RF_ACTIVE); if (erom_res == NULL) { device_printf(dev, "failed to allocate EROM resource\n"); return (ENXIO); } error = bcma_add_children(dev, erom_res, BCMA_EROM_TABLE_START); /* Clean up */ bus_release_resource(dev, SYS_RES_MEMORY, rid, erom_res); if (error) return (error); /* Initialize full bridge configuration */ error = BHNDB_INIT_FULL_CONFIG(device_get_parent(dev), dev, bhndb_bcma_priority_table); if (error) return (error); /* Ask our parent bridge to find the corresponding bridge core */ sc->hostb_dev = BHNDB_FIND_HOSTB_DEVICE(device_get_parent(dev), dev); /* Call our superclass' implementation */ return (bcma_attach(dev)); } static int bcma_bhndb_suspend_child(device_t dev, device_t child) { struct bcma_devinfo *dinfo; int error; if (device_get_parent(child) != dev) BUS_SUSPEND_CHILD(device_get_parent(dev), child); if (device_is_suspended(child)) return (EBUSY); dinfo = device_get_ivars(child); /* Suspend the child */ if ((error = bhnd_generic_br_suspend_child(dev, child))) return (error); /* Suspend child's agent resource */ if (dinfo->res_agent != NULL) BHNDB_SUSPEND_RESOURCE(device_get_parent(dev), dev, SYS_RES_MEMORY, dinfo->res_agent->res); return (0); } static int bcma_bhndb_resume_child(device_t dev, device_t child) { struct bcma_devinfo *dinfo; int error; if (device_get_parent(child) != dev) BUS_SUSPEND_CHILD(device_get_parent(dev), child); if (!device_is_suspended(child)) return (EBUSY); dinfo = device_get_ivars(child); /* Resume child's agent resource */ if (dinfo->res_agent != NULL) { error = BHNDB_RESUME_RESOURCE(device_get_parent(dev), dev, SYS_RES_MEMORY, dinfo->res_agent->res); if (error) return (error); } /* Resume the child */ if ((error = bhnd_generic_br_resume_child(dev, child))) { /* On failure, re-suspend the agent resource */ if (dinfo->res_agent != NULL) { BHNDB_SUSPEND_RESOURCE(device_get_parent(dev), dev, SYS_RES_MEMORY, dinfo->res_agent->res); } return (error); } return (0); } static int bcma_bhndb_read_board_info(device_t dev, device_t child, struct bhnd_board_info *info) { int error; /* Initialize with NVRAM-derived values */ if ((error = bhnd_bus_generic_read_board_info(dev, child, info))) return (error); /* Let the bridge fill in any additional data */ return (BHNDB_POPULATE_BOARD_INFO(device_get_parent(dev), dev, info)); } static device_method_t bcma_bhndb_methods[] = { /* Device interface */ DEVMETHOD(device_probe, bcma_bhndb_probe), DEVMETHOD(device_attach, bcma_bhndb_attach), /* Bus interface */ DEVMETHOD(bus_suspend_child, bcma_bhndb_suspend_child), DEVMETHOD(bus_resume_child, bcma_bhndb_resume_child), /* BHND interface */ DEVMETHOD(bhnd_bus_read_board_info, bcma_bhndb_read_board_info), DEVMETHOD_END }; DEFINE_CLASS_1(bhnd, bcma_bhndb_driver, bcma_bhndb_methods, sizeof(struct bcma_softc), bcma_driver); DRIVER_MODULE(bcma_bhndb, bhndb, bcma_bhndb_driver, bhnd_devclass, NULL, NULL); MODULE_VERSION(bcma_bhndb, 1); MODULE_DEPEND(bcma_bhndb, bcma, 1, 1, 1); MODULE_DEPEND(bcma_bhndb, bhnd, 1, 1, 1); MODULE_DEPEND(bcma_bhndb, bhndb, 1, 1, 1);