FreeBSD/Linux Kernel Cross Reference
sys/dev/iicbus/iicoc_pci.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2003-2012 Broadcom Corporation
      * 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.
     * 2. Redistributions in binary form must reproduce the above copyright notice,
     *    this list of conditions and the following disclaimer in the documentation
     *    and/or other materials provided with the distribution.
     *
     * 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 MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/bus.h>
    #include <sys/lock.h>
    #include <sys/mutex.h>
    #include <sys/rman.h>
    
    #include <dev/iicbus/iicbus.h>
    #include <dev/iicbus/iiconf.h>
    
    #include <dev/pci/pcireg.h>
    #include <dev/pci/pcivar.h>
    
    #include "iicbus_if.h"
    #include "iicoc.h"
    
    static int
    iicoc_detach(device_t dev)
    {
            struct iicoc_softc *sc;
    
            sc = device_get_softc(dev);
            device_delete_children(dev);
            bus_generic_detach(dev);
            bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem_res);
            mtx_destroy(&sc->sc_mtx);
    
            return (0);
    }
    
    /*
     * We add all the devices which we know about.
     * The generic attach routine will attach them if they are alive.
     */
    static int
    iicoc_attach(device_t dev)
    {
            struct iicoc_softc *sc;
    
            sc = device_get_softc(dev);
    
            sc->dev = dev;
            mtx_init(&sc->sc_mtx, "iicoc", "iicoc", MTX_DEF);
            sc->mem_rid = 0;
            sc->mem_res = bus_alloc_resource_anywhere(dev,
                SYS_RES_MEMORY, &sc->mem_rid, 0x100, RF_ACTIVE);
    
            if (sc->mem_res == NULL) {
                    device_printf(dev, "Could not allocate bus resource.\n");
                    return (-1);
            }
            iicoc_init(dev);
            sc->iicbus = device_add_child(dev, "iicbus", -1);
            if (sc->iicbus == NULL) {
                    device_printf(dev, "Could not allocate iicbus instance.\n");
                    bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid,
                        sc->mem_res);
                    mtx_destroy(&sc->sc_mtx);
                    return (-1);
            }
            bus_generic_attach(dev);
    
            return (0);
    }
    
    static int
   iicoc_probe(device_t dev)
   {
           struct iicoc_softc *sc;
   
           sc = device_get_softc(dev);
           if ((pci_get_vendor(dev) == 0x184e) &&
               (pci_get_device(dev) == 0x1011)) {
                   sc->clockfreq = XLP_I2C_CLKFREQ;
                   sc->i2cfreq = XLP_I2C_FREQ;
                   sc->reg_shift = 2;
                   device_set_desc(dev, "Netlogic XLP I2C Controller");
                   return (BUS_PROBE_DEFAULT);
           }
           return (ENXIO);
   }
   
   static device_method_t iicoc_methods[] = {
           /* device interface */
           DEVMETHOD(device_probe, iicoc_probe),
           DEVMETHOD(device_attach, iicoc_attach),
           DEVMETHOD(device_detach, iicoc_detach),
   
           /* iicbus interface */
           DEVMETHOD(iicbus_callback, iicbus_null_callback),
           DEVMETHOD(iicbus_repeated_start, iicoc_iicbus_repeated_start),
           DEVMETHOD(iicbus_start, iicoc_iicbus_start),
           DEVMETHOD(iicbus_stop, iicoc_iicbus_stop),
           DEVMETHOD(iicbus_reset, iicoc_iicbus_reset),
           DEVMETHOD(iicbus_write, iicoc_iicbus_write),
           DEVMETHOD(iicbus_read, iicoc_iicbus_read),
           DEVMETHOD(iicbus_transfer, iicbus_transfer_gen),
   
           DEVMETHOD_END
   };
   
   static driver_t iicoc_driver = {
           "iicoc",
           iicoc_methods,
           sizeof(struct iicoc_softc),
   };
   
   DRIVER_MODULE(iicoc, pci, iicoc_driver, 0, 0);

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