FreeBSD/Linux Kernel Cross Reference
sys/dev/pdq/if_fpa.c

     /*-
      * Copyright (c) 1995, 1996 Matt Thomas <matt@3am-software.com>
      * 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. 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/cdefs.h>
    __FBSDID("$FreeBSD: releng/10.0/sys/dev/pdq/if_fpa.c 199542 2009-11-19 19:25:47Z jhb $");
    
    /*
     * DEC PDQ FDDI Controller; code for BSD derived operating systems
     *
     *   This module supports the DEC DEFPA PCI FDDI Controller
     */
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/socket.h>
    
    #include <sys/module.h>
    #include <sys/bus.h>
    
    #include <machine/bus.h>
    #include <machine/resource.h>
    #include <sys/rman.h> 
    
    #include <net/if.h>
    #include <net/if_media.h> 
    #include <net/fddi.h>
    
    #include <dev/pci/pcivar.h>
    #include <dev/pci/pcireg.h>
    
    #include <dev/pdq/pdq_freebsd.h>
    #include <dev/pdq/pdqreg.h>
    
    #define DEC_VENDORID            0x1011
    #define DEFPA_CHIPID            0x000F
    
    #define DEFPA_LATENCY   0x88
    
    #define PCI_CFLT        0x0C    /* Configuration Latency */
    #define PCI_CBMA        0x10    /* Configuration Base Memory Address */
    #define PCI_CBIO        0x14    /* Configuration Base I/O Address */
    
    static int      pdq_pci_probe           (device_t);
    static int      pdq_pci_attach          (device_t);
    static int      pdq_pci_detach          (device_t);
    static int      pdq_pci_shutdown        (device_t);
    static void     pdq_pci_ifintr          (void *);
    
    static void
    pdq_pci_ifintr(void *arg)
    {
        pdq_softc_t *sc;
    
        sc = arg;
    
        PDQ_LOCK(sc);
        (void) pdq_interrupt(sc->sc_pdq);
        PDQ_UNLOCK(sc);
    
        return;
    }
    
    /*
     * This is the PCI configuration support.
     */
    static int
    pdq_pci_probe(device_t dev)
    {
        if (pci_get_vendor(dev) == DEC_VENDORID &&
                pci_get_device(dev) == DEFPA_CHIPID) {
            device_set_desc(dev, "Digital DEFPA PCI FDDI Controller");
            return (BUS_PROBE_DEFAULT);
        }
    
        return (ENXIO);
   }
   
   static int
   pdq_pci_attach(device_t dev)
   {
       pdq_softc_t *sc;
       u_int32_t command;
       int error;
   
       sc = device_get_softc(dev);
   
       sc->dev = dev;
   
       /*
        * Map control/status registers.
        */
       pci_enable_busmaster(dev);
   
       command = pci_read_config(dev, PCIR_LATTIMER, 1);
       if (command < DEFPA_LATENCY) {
           command = DEFPA_LATENCY;
           pci_write_config(dev, PCIR_LATTIMER, command, 1);
       }
   
       sc->mem_rid = PCI_CBMA;
       sc->mem_type = SYS_RES_MEMORY;
       sc->mem = bus_alloc_resource_any(dev, sc->mem_type, &sc->mem_rid,
                                        RF_ACTIVE);
       if (!sc->mem) {
           device_printf(dev, "Unable to allocate I/O space resource.\n");
           error = ENXIO;
           goto bad;
       }
       sc->mem_bsh = rman_get_bushandle(sc->mem);
       sc->mem_bst = rman_get_bustag(sc->mem);
   
       sc->irq_rid = 0;
       sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
                                        RF_SHAREABLE | RF_ACTIVE);
       if (!sc->irq) {
           device_printf(dev, "Unable to allocate interrupt resource.\n");
           error = ENXIO;
           goto bad;
       }
   
       error = pdq_ifattach(sc, sc->sc_pdq->pdq_hwaddr.lanaddr_bytes, PDQ_DEFPA);
       if (error)
           goto bad;
       
       error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, NULL,
                              pdq_pci_ifintr, sc, &sc->irq_ih);
       if (error) {
           device_printf(dev, "Failed to setup interrupt handler.\n");
           pdq_ifdetach(sc);
           return (error);
       }
   
   
       return (0);
   bad:
       pdq_free(dev);
       return (error);
   }
   
   static int
   pdq_pci_detach (dev)
       device_t    dev;
   {
       pdq_softc_t *sc;
   
       sc = device_get_softc(dev);
       pdq_ifdetach(sc);
   
       return (0);
   }
   
   static int
   pdq_pci_shutdown(device_t dev)
   {
       pdq_softc_t *sc;
   
       sc = device_get_softc(dev);
       PDQ_LOCK(sc);
       pdq_hwreset(sc->sc_pdq);
       PDQ_UNLOCK(sc);
   
       return (0);
   }
   
   static device_method_t pdq_pci_methods[] = {
       /* Device interface */
       DEVMETHOD(device_probe,     pdq_pci_probe),
       DEVMETHOD(device_attach,    pdq_pci_attach),
       DEVMETHOD(device_detach,    pdq_pci_detach),
       DEVMETHOD(device_shutdown,  pdq_pci_shutdown),
   
       { 0, 0 }
   };
   
   static driver_t pdq_pci_driver = {
       "fpa",
       pdq_pci_methods,
       sizeof(pdq_softc_t),
   };
   
   DRIVER_MODULE(fpa, pci, pdq_pci_driver, pdq_devclass, 0, 0);
   MODULE_DEPEND(fpa, pci, 1, 1, 1);
   MODULE_DEPEND(fpa, fddi, 1, 1, 1);

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