FreeBSD/Linux Kernel Cross Reference
sys/pccard/skel.c

     /*
      * Loadable kernel module skeleton driver
      * 11 July 1995 Andrew McRae
      *
      *-------------------------------------------------------------------------
      *
      * Copyright (c) 1995 Andrew McRae.  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.
     * 3. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/param.h>
    #include <sys/systm.h>
    #include <sys/proc.h>
    #include <sys/conf.h>
    #include <sys/mount.h>
    #include <sys/sysent.h>
    #include <sys/exec.h>
    #include <sys/lkm.h>
    
    #include <i386/isa/isa_device.h>
    
    #include <sys/select.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <pccard/cardinfo.h>
    #include <pccard/driver.h>
    #include <pccard/slot.h>
    
    static int skelinit(struct pccard_devinfo *);           /* init device */
    static void skelunload(struct pccard_devinfo *);        /* Disable driver */
    static int skelintr(struct pccard_devinfo *);           /* Interrupt handler */
    
    PCCARD_MODULE(skel, skelinit, skelunload, skelintr, 0, net_imask);
    
    static int opened;      /* Rather minimal device state... */
            
    /*
     *      Skeleton driver entry points for PCCARD configuration.
     */
    /*
     *      Initialize the device.
     */
    static int
    skelinit(struct pccard_devinfo *devi)
    {
            int unit = devi->isahd.id_unit;
    
            if (opened & (1 << unit))
                    return(EBUSY);
            opened |= 1 << unit;
            printf("%s%d: init\n", devi->drv->name, unit);
            printf("%s%d: irq %d iobase 0x%x maddr 0x%x memlen %d\n",
                    devi->drv->name, unit, devi->isahd.id_irq,
                    devi->isahd.id_iobase, devi->isahd.id_maddr,
                    devi->isahd.id_msize);
            return(0);
    }
    /*
     *      The device entry is being removed. Shut it down,
     *      and turn off interrupts etc. Not called unless
     *      the device was successfully installed.
     */
    static void
    skelunload(struct pccard_devinfo *devi)
    {
            int unit = devi->isahd.id_unit;
    
            printf("%s%d: unload\n", devi->drv->name, unit);
            opened &= ~(1 << unit);
    }
    /*
     *      Interrupt handler.
     *      Returns true if the interrupt is for us.
     */
    static int
    skelintr(struct pccard_devinfo *devi)
    {
            return(0);
    }

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