The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*-
    2  * Copyright (c) 1995, 1996 Matt Thomas <matt@3am-software.com>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. The name of the author may not be used to endorse or promote products
   11  *    derived from this software without specific prior written permission
   12  *
   13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   16  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   18  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   19  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   20  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   22  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   23  *
   24  *
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/9.0/sys/dev/pdq/if_fpa.c 199542 2009-11-19 19:25:47Z jhb $");
   29 
   30 /*
   31  * DEC PDQ FDDI Controller; code for BSD derived operating systems
   32  *
   33  *   This module supports the DEC DEFPA PCI FDDI Controller
   34  */
   35 
   36 #include <sys/param.h>
   37 #include <sys/systm.h>
   38 #include <sys/kernel.h>
   39 #include <sys/socket.h>
   40 
   41 #include <sys/module.h>
   42 #include <sys/bus.h>
   43 
   44 #include <machine/bus.h>
   45 #include <machine/resource.h>
   46 #include <sys/rman.h> 
   47 
   48 #include <net/if.h>
   49 #include <net/if_media.h> 
   50 #include <net/fddi.h>
   51 
   52 #include <dev/pci/pcivar.h>
   53 #include <dev/pci/pcireg.h>
   54 
   55 #include <dev/pdq/pdq_freebsd.h>
   56 #include <dev/pdq/pdqreg.h>
   57 
   58 #define DEC_VENDORID            0x1011
   59 #define DEFPA_CHIPID            0x000F
   60 
   61 #define DEFPA_LATENCY   0x88
   62 
   63 #define PCI_CFLT        0x0C    /* Configuration Latency */
   64 #define PCI_CBMA        0x10    /* Configuration Base Memory Address */
   65 #define PCI_CBIO        0x14    /* Configuration Base I/O Address */
   66 
   67 static int      pdq_pci_probe           (device_t);
   68 static int      pdq_pci_attach          (device_t);
   69 static int      pdq_pci_detach          (device_t);
   70 static int      pdq_pci_shutdown        (device_t);
   71 static void     pdq_pci_ifintr          (void *);
   72 
   73 static void
   74 pdq_pci_ifintr(void *arg)
   75 {
   76     pdq_softc_t *sc;
   77 
   78     sc = arg;
   79 
   80     PDQ_LOCK(sc);
   81     (void) pdq_interrupt(sc->sc_pdq);
   82     PDQ_UNLOCK(sc);
   83 
   84     return;
   85 }
   86 
   87 /*
   88  * This is the PCI configuration support.
   89  */
   90 static int
   91 pdq_pci_probe(device_t dev)
   92 {
   93     if (pci_get_vendor(dev) == DEC_VENDORID &&
   94             pci_get_device(dev) == DEFPA_CHIPID) {
   95         device_set_desc(dev, "Digital DEFPA PCI FDDI Controller");
   96         return (BUS_PROBE_DEFAULT);
   97     }
   98 
   99     return (ENXIO);
  100 }
  101 
  102 static int
  103 pdq_pci_attach(device_t dev)
  104 {
  105     pdq_softc_t *sc;
  106     u_int32_t command;
  107     int error;
  108 
  109     sc = device_get_softc(dev);
  110 
  111     sc->dev = dev;
  112 
  113     /*
  114      * Map control/status registers.
  115      */
  116     pci_enable_busmaster(dev);
  117 
  118     command = pci_read_config(dev, PCIR_LATTIMER, 1);
  119     if (command < DEFPA_LATENCY) {
  120         command = DEFPA_LATENCY;
  121         pci_write_config(dev, PCIR_LATTIMER, command, 1);
  122     }
  123 
  124     sc->mem_rid = PCI_CBMA;
  125     sc->mem_type = SYS_RES_MEMORY;
  126     sc->mem = bus_alloc_resource_any(dev, sc->mem_type, &sc->mem_rid,
  127                                      RF_ACTIVE);
  128     if (!sc->mem) {
  129         device_printf(dev, "Unable to allocate I/O space resource.\n");
  130         error = ENXIO;
  131         goto bad;
  132     }
  133     sc->mem_bsh = rman_get_bushandle(sc->mem);
  134     sc->mem_bst = rman_get_bustag(sc->mem);
  135 
  136     sc->irq_rid = 0;
  137     sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
  138                                      RF_SHAREABLE | RF_ACTIVE);
  139     if (!sc->irq) {
  140         device_printf(dev, "Unable to allocate interrupt resource.\n");
  141         error = ENXIO;
  142         goto bad;
  143     }
  144 
  145     error = pdq_ifattach(sc, sc->sc_pdq->pdq_hwaddr.lanaddr_bytes, PDQ_DEFPA);
  146     if (error)
  147         goto bad;
  148     
  149     error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, NULL,
  150                            pdq_pci_ifintr, sc, &sc->irq_ih);
  151     if (error) {
  152         device_printf(dev, "Failed to setup interrupt handler.\n");
  153         pdq_ifdetach(sc);
  154         return (error);
  155     }
  156 
  157 
  158     return (0);
  159 bad:
  160     pdq_free(dev);
  161     return (error);
  162 }
  163 
  164 static int
  165 pdq_pci_detach (dev)
  166     device_t    dev;
  167 {
  168     pdq_softc_t *sc;
  169 
  170     sc = device_get_softc(dev);
  171     pdq_ifdetach(sc);
  172 
  173     return (0);
  174 }
  175 
  176 static int
  177 pdq_pci_shutdown(device_t dev)
  178 {
  179     pdq_softc_t *sc;
  180 
  181     sc = device_get_softc(dev);
  182     PDQ_LOCK(sc);
  183     pdq_hwreset(sc->sc_pdq);
  184     PDQ_UNLOCK(sc);
  185 
  186     return (0);
  187 }
  188 
  189 static device_method_t pdq_pci_methods[] = {
  190     /* Device interface */
  191     DEVMETHOD(device_probe,     pdq_pci_probe),
  192     DEVMETHOD(device_attach,    pdq_pci_attach),
  193     DEVMETHOD(device_detach,    pdq_pci_detach),
  194     DEVMETHOD(device_shutdown,  pdq_pci_shutdown),
  195 
  196     { 0, 0 }
  197 };
  198 
  199 static driver_t pdq_pci_driver = {
  200     "fpa",
  201     pdq_pci_methods,
  202     sizeof(pdq_softc_t),
  203 };
  204 
  205 DRIVER_MODULE(fpa, pci, pdq_pci_driver, pdq_devclass, 0, 0);
  206 MODULE_DEPEND(fpa, pci, 1, 1, 1);
  207 MODULE_DEPEND(fpa, fddi, 1, 1, 1);

Cache object: ad257b4f92d9f6754e4794c887a48df3


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