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/5.2/sys/dev/pdq/if_fpa.c 121816 2003-10-31 18:32:15Z brooks $");
   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_memio.h>
   45 #include <machine/bus_pio.h>
   46 #include <machine/bus.h>
   47 #include <machine/resource.h>
   48 #include <sys/rman.h> 
   49 
   50 #include <net/if.h>
   51 #include <net/if_arp.h>
   52 #include <net/if_media.h> 
   53 #include <net/fddi.h>
   54 
   55 #include <dev/pci/pcivar.h>
   56 #include <dev/pci/pcireg.h>
   57 
   58 #include <dev/pdq/pdq_freebsd.h>
   59 #include <dev/pdq/pdqreg.h>
   60 
   61 #define DEC_VENDORID            0x1011
   62 #define DEFPA_CHIPID            0x000F
   63 
   64 #define DEFPA_LATENCY   0x88
   65 
   66 #define PCI_CFLT        0x0C    /* Configuration Latency */
   67 #define PCI_CBMA        0x10    /* Configuration Base Memory Address */
   68 #define PCI_CBIO        0x14    /* Configuration Base I/O Address */
   69 
   70 static int      pdq_pci_probe           (device_t);
   71 static int      pdq_pci_attach          (device_t);
   72 static int      pdq_pci_detach          (device_t);
   73 static void     pdq_pci_shutdown        (device_t);
   74 static void     pdq_pci_ifintr          (void *);
   75 
   76 static void
   77 pdq_pci_ifintr(void *arg)
   78 {
   79     device_t dev;
   80     pdq_softc_t *sc;
   81 
   82     dev = (device_t)arg;
   83     sc = device_get_softc(dev);
   84 
   85     PDQ_LOCK(sc);
   86     (void) pdq_interrupt(sc->sc_pdq);
   87     PDQ_UNLOCK(sc);
   88 
   89     return;
   90 }
   91 
   92 /*
   93  * This is the PCI configuration support.
   94  */
   95 static int
   96 pdq_pci_probe(device_t dev)
   97 {
   98     if (pci_get_vendor(dev) == DEC_VENDORID &&
   99             pci_get_device(dev) == DEFPA_CHIPID) {
  100         device_set_desc(dev, "Digital DEFPA PCI FDDI Controller");
  101         return (0);
  102     }
  103 
  104     return (ENXIO);
  105 }
  106 
  107 static int
  108 pdq_pci_attach(device_t dev)
  109 {
  110     pdq_softc_t *sc;
  111     struct ifnet *ifp;
  112     u_int32_t command;
  113     int error;
  114 
  115     sc = device_get_softc(dev);
  116     ifp = &sc->arpcom.ac_if;
  117 
  118     sc->dev = dev;
  119 
  120     /*
  121      * Map control/status registers.
  122      */
  123     pci_enable_busmaster(dev);
  124 
  125     command = pci_read_config(dev, PCIR_LATTIMER, 1);
  126     if (command < DEFPA_LATENCY) {
  127         command = DEFPA_LATENCY;
  128         pci_write_config(dev, PCIR_LATTIMER, command, 1);
  129     }
  130 
  131     sc->mem_rid = PCI_CBMA;
  132     sc->mem_type = SYS_RES_MEMORY;
  133     sc->mem = bus_alloc_resource(dev, sc->mem_type, &sc->mem_rid,
  134                                  0, ~0, 1, RF_ACTIVE);
  135     if (!sc->mem) {
  136         device_printf(dev, "Unable to allocate I/O space resource.\n");
  137         error = ENXIO;
  138         goto bad;
  139     }
  140     sc->mem_bsh = rman_get_bushandle(sc->mem);
  141     sc->mem_bst = rman_get_bustag(sc->mem);
  142 
  143     sc->irq_rid = 0;
  144     sc->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->irq_rid,
  145                                  0, ~0, 1, RF_SHAREABLE | RF_ACTIVE);
  146     if (!sc->irq) {
  147         device_printf(dev, "Unable to allocate interrupt resource.\n");
  148         error = ENXIO;
  149         goto bad;
  150     }
  151 
  152     if_initname(ifp, device_get_name(dev), device_get_unit(dev));
  153 
  154     sc->sc_pdq = pdq_initialize(sc->mem_bst, sc->mem_bsh,
  155                                 ifp->if_xname, -1,
  156                                 (void *)sc, PDQ_DEFPA);
  157     if (sc->sc_pdq == NULL) {
  158         device_printf(dev, "Initialization failed.\n");
  159         error = ENXIO;
  160         goto bad;
  161     }
  162 
  163     error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET,
  164                            pdq_pci_ifintr, dev, &sc->irq_ih);
  165     if (error) {
  166         device_printf(dev, "Failed to setup interrupt handler.\n");
  167         error = ENXIO;
  168         goto bad;
  169     }
  170 
  171     bcopy((caddr_t) sc->sc_pdq->pdq_hwaddr.lanaddr_bytes,
  172           (caddr_t) sc->arpcom.ac_enaddr, FDDI_ADDR_LEN);
  173     pdq_ifattach(sc);
  174 
  175     return (0);
  176 bad:
  177     pdq_free(dev);
  178     return (error);
  179 }
  180 
  181 static int
  182 pdq_pci_detach (dev)
  183     device_t    dev;
  184 {
  185     pdq_softc_t *sc;
  186 
  187     sc = device_get_softc(dev);
  188     pdq_ifdetach(sc);
  189 
  190     return (0);
  191 }
  192 
  193 static void
  194 pdq_pci_shutdown(device_t dev)
  195 {
  196     pdq_softc_t *sc;
  197 
  198     sc = device_get_softc(dev);
  199     pdq_hwreset(sc->sc_pdq);
  200 
  201     return;
  202 }
  203 
  204 static device_method_t pdq_pci_methods[] = {
  205     /* Device interface */
  206     DEVMETHOD(device_probe,     pdq_pci_probe),
  207     DEVMETHOD(device_attach,    pdq_pci_attach),
  208     DEVMETHOD(device_detach,    pdq_pci_detach),
  209     DEVMETHOD(device_shutdown,  pdq_pci_shutdown),
  210 
  211     { 0, 0 }
  212 };
  213 
  214 static driver_t pdq_pci_driver = {
  215     "fpa",
  216     pdq_pci_methods,
  217     sizeof(pdq_softc_t),
  218 };
  219 
  220 DRIVER_MODULE(fpa, pci, pdq_pci_driver, pdq_devclass, 0, 0);
  221 MODULE_DEPEND(fpa, pci, 1, 1, 1);
  222 MODULE_DEPEND(fpa, fddi, 1, 1, 1);

Cache object: 2ebec1176dff5d083e7349a15fab97a9


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