FreeBSD/Linux Kernel Cross Reference
sys/dev/bhnd/bhndb/bhndb_pci_sprom.c

     /*-
      * Copyright (c) 2015-2016 Landon Fuller <landon@landonf.org>
      * 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 <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    /*
     * BHNDB PCI SPROM driver.
     * 
     * Provides support for early PCI bridge cores that vend SPROM CSRs
     * via PCI configuration space.
     */
    
    #include <sys/param.h>
    #include <sys/kernel.h>
    #include <sys/bus.h>
    #include <sys/limits.h>
    #include <sys/malloc.h>
    #include <sys/module.h>
    #include <sys/systm.h>
    
    #include <dev/pci/pcireg.h>
    #include <dev/pci/pcivar.h>
    
    #include <dev/bhnd/bhnd.h>
    #include <dev/bhnd/cores/pci/bhnd_pci_hostbvar.h>
    #include <dev/bhnd/nvram/bhnd_spromvar.h>
    
    #include "bhnd_nvram_if.h"
    
    #include "bhndb_pcireg.h"
    #include "bhndb_pcivar.h"
    
    static int
    bhndb_pci_sprom_probe(device_t dev)
    {
            device_t        bridge;
            int             error;
    
            /* Our parent must be a PCI-BHND bridge */
            bridge = device_get_parent(dev);
            if (device_get_driver(bridge) != &bhndb_pci_driver)
                    return (ENXIO);
    
            /* Defer to default driver implementation */
            if ((error = bhnd_sprom_probe(dev)) > 0)
                    return (error);
    
            return (BUS_PROBE_NOWILDCARD);
    }
    
    static device_method_t bhndb_pci_sprom_methods[] = {
            /* Device interface */
            DEVMETHOD(device_probe,                 bhndb_pci_sprom_probe),
            DEVMETHOD_END
    };
    
    DEFINE_CLASS_1(bhnd_nvram, bhndb_pci_sprom_driver, bhndb_pci_sprom_methods, sizeof(struct bhnd_sprom_softc), bhnd_sprom_driver);
    
    DRIVER_MODULE(bhndb_pci_sprom, bhndb, bhndb_pci_sprom_driver, NULL, NULL);
    MODULE_DEPEND(bhndb_pci_sprom, bhnd, 1, 1, 1);
    MODULE_DEPEND(bhndb_pci_sprom, bhnd_sprom, 1, 1, 1);
    MODULE_VERSION(bhndb_pci_sprom, 1);

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