if_wi_pci.c

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    1 /*
    2  * Copyright (c) 1997, 1998, 1999
    3  *      Bill Paul <wpaul@ctr.columbia.edu>.  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. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by Bill Paul.
   16  * 4. Neither the name of the author nor the names of any co-contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
   24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   30  * THE POSSIBILITY OF SUCH DAMAGE.
   31  *
   32  * $FreeBSD: releng/5.0/sys/dev/wi/if_wi_pci.c 98220 2002-06-14 15:32:01Z nsayer $
   33  */
   34 
   35 /*
   36  * Lucent WaveLAN/IEEE 802.11 PCMCIA driver for FreeBSD.
   37  *
   38  * Written by Bill Paul <wpaul@ctr.columbia.edu>
   39  * Electrical Engineering Department
   40  * Columbia University, New York City
   41  */
   42 
   43 #include <sys/param.h>
   44 #include <sys/kernel.h>
   45 #include <sys/socket.h>
   46 #include <sys/systm.h>
   47 #include <sys/module.h>
   48 #include <sys/bus.h>
   49 
   50 #include <machine/bus.h>
   51 #include <machine/resource.h>
   52 #include <machine/clock.h>
   53 #include <sys/rman.h>
   54 
   55 #include <pci/pcireg.h>
   56 #include <pci/pcivar.h>
   57 
   58 #include <net/if.h>
   59 #include <net/if_arp.h>
   60 #include <net/ethernet.h>
   61 #include <net/if_media.h>
   62 #include <net/if_types.h>
   63 #include <net/if_ieee80211.h>
   64 
   65 #include <dev/wi/if_wavelan_ieee.h>
   66 #include <dev/wi/wi_hostap.h>
   67 #include <dev/wi/if_wivar.h>
   68 #include <dev/wi/if_wireg.h>
   69 
   70 static int wi_pci_probe(device_t);
   71 static int wi_pci_attach(device_t);
   72 
   73 static device_method_t wi_pci_methods[] = {
   74         /* Device interface */
   75         DEVMETHOD(device_probe,         wi_pci_probe),
   76         DEVMETHOD(device_attach,        wi_pci_attach),
   77         DEVMETHOD(device_detach,        wi_generic_detach),
   78         DEVMETHOD(device_shutdown,      wi_shutdown),
   79 
   80         { 0, 0 }
   81 };
   82 
   83 static driver_t wi_pci_driver = {
   84         "wi",
   85         wi_pci_methods,
   86         sizeof(struct wi_softc)
   87 };
   88 
   89 static struct {
   90         unsigned int vendor,device;
   91         int bus_type;
   92         char *desc;
   93 } pci_ids[] = {
   94         /* Sorted by description */
   95         {0x10b7, 0x7770, WI_BUS_PCI_PLX, "3Com Airconnect"},
   96         {0x16ab, 0x1101, WI_BUS_PCI_PLX, "GLPRISM2 WaveLAN"},
   97         {0x1260, 0x3873, WI_BUS_PCI_NATIVE, "Intersil Prism2.5"},
   98         {0x16ab, 0x1102, WI_BUS_PCI_PLX, "Linksys WDT11"},
   99         {0x1385, 0x4100, WI_BUS_PCI_PLX, "Netgear MA301"},
  100         {0x1638, 0x1100, WI_BUS_PCI_PLX, "PRISM2STA WaveLAN"},
  101         {0x111a, 0x1023, WI_BUS_PCI_PLX, "Siemens SpeedStream"},
  102         {0x16ec, 0x3685, WI_BUS_PCI_PLX, "US Robotics 2415"},
  103         {0, 0, 0, NULL}
  104 };
  105 
  106 DRIVER_MODULE(if_wi, pci, wi_pci_driver, wi_devclass, 0, 0);
  107 
  108 static int
  109 wi_pci_probe(dev)
  110         device_t        dev;
  111 {
  112         struct wi_softc         *sc;
  113         int i;
  114 
  115         sc = device_get_softc(dev);
  116         for(i=0; pci_ids[i].vendor != 0; i++) {
  117                 if ((pci_get_vendor(dev) == pci_ids[i].vendor) &&
  118                         (pci_get_device(dev) == pci_ids[i].device)) {
  119                         sc->wi_bus_type = pci_ids[i].bus_type;
  120                         device_set_desc(dev, pci_ids[i].desc);
  121                         return (0);
  122                 }
  123         }
  124         return(ENXIO);
  125 }
  126 
  127 static int
  128 wi_pci_attach(device_t dev)
  129 {
  130         struct wi_softc         *sc;
  131         u_int32_t               command, wanted;
  132         u_int16_t               reg;
  133         int                     error;
  134         int                     timeout;
  135 
  136         sc = device_get_softc(dev);
  137 
  138         command = pci_read_config(dev, PCIR_COMMAND, 4);
  139         wanted = PCIM_CMD_PORTEN|PCIM_CMD_MEMEN;
  140         command |= wanted;
  141         pci_write_config(dev, PCIR_COMMAND, command, 4);
  142         command = pci_read_config(dev, PCIR_COMMAND, 4);
  143         if ((command & wanted) != wanted) {
  144                 device_printf(dev, "wi_pci_attach() failed to enable pci!\n");
  145                 return (ENXIO);
  146         }
  147 
  148         if (sc->wi_bus_type != WI_BUS_PCI_NATIVE) {
  149                 error = wi_alloc(dev, WI_PCI_IORES);
  150                 if (error)
  151                         return (error);
  152 
  153                 /* Make sure interrupts are disabled. */
  154                 CSR_WRITE_2(sc, WI_INT_EN, 0);
  155                 CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF);
  156 
  157                 /* We have to do a magic PLX poke to enable interrupts */
  158                 sc->local_rid = WI_PCI_LOCALRES;
  159                 sc->local = bus_alloc_resource(dev, SYS_RES_IOPORT,
  160                     &sc->local_rid, 0, ~0, 1, RF_ACTIVE);
  161                 sc->wi_localtag = rman_get_bustag(sc->local);
  162                 sc->wi_localhandle = rman_get_bushandle(sc->local);
  163                 command = bus_space_read_4(sc->wi_localtag, sc->wi_localhandle,
  164                     WI_LOCAL_INTCSR);
  165                 command |= WI_LOCAL_INTEN;
  166                 bus_space_write_4(sc->wi_localtag, sc->wi_localhandle,
  167                     WI_LOCAL_INTCSR, command);
  168                 bus_release_resource(dev, SYS_RES_IOPORT, sc->local_rid,
  169                     sc->local);
  170                 sc->local = NULL;
  171 
  172                 sc->mem_rid = WI_PCI_MEMRES;
  173                 sc->mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->mem_rid,
  174                                         0, ~0, 1, RF_ACTIVE);
  175                 if (sc->mem == NULL) {
  176                         device_printf(dev, "couldn't allocate memory\n");
  177                         wi_free(dev);
  178                         return (ENXIO);
  179                 }
  180                 sc->wi_bmemtag = rman_get_bustag(sc->mem);
  181                 sc->wi_bmemhandle = rman_get_bushandle(sc->mem);
  182 
  183                 /*
  184                  * From Linux driver:
  185                  * Write COR to enable PC card
  186                  * This is a subset of the protocol that the pccard bus code
  187                  * would do.
  188                  */
  189                 CSM_WRITE_1(sc, WI_COR_OFFSET, WI_COR_VALUE); 
  190                 reg = CSM_READ_1(sc, WI_COR_OFFSET);
  191                 if (reg != WI_COR_VALUE) {
  192                         device_printf(dev, "CSM_READ_1(WI_COR_OFFSET) "
  193                             "wanted %d, got %d\n", WI_COR_VALUE, reg);
  194                         wi_free(dev);
  195                         return (ENXIO);
  196                 }
  197         } else {
  198                 error = wi_alloc(dev, WI_PCI_LMEMRES);
  199                 if (error)
  200                         return (error);
  201 
  202                 CSR_WRITE_2(sc, WI_HFA384X_PCICOR_OFF, 0x0080);
  203                 DELAY(250000);
  204 
  205                 CSR_WRITE_2(sc, WI_HFA384X_PCICOR_OFF, 0x0000);
  206                 DELAY(500000);
  207 
  208                 timeout=2000000;
  209                 while ((--timeout > 0) &&
  210                     (CSR_READ_2(sc, WI_COMMAND) & WI_CMD_BUSY))
  211                         DELAY(10);
  212 
  213                 if (timeout == 0) {
  214                         device_printf(dev, "couldn't reset prism2.5 core.\n");
  215                         wi_free(dev);
  216                         return(ENXIO);
  217                 }
  218         }
  219 
  220         CSR_WRITE_2(sc, WI_HFA384X_SWSUPPORT0_OFF, WI_PRISM2STA_MAGIC);
  221         reg = CSR_READ_2(sc, WI_HFA384X_SWSUPPORT0_OFF);
  222         if (reg != WI_PRISM2STA_MAGIC) {
  223                 device_printf(dev,
  224                     "CSR_READ_2(WI_HFA384X_SWSUPPORT0_OFF) "
  225                     "wanted %d, got %d\n", WI_PRISM2STA_MAGIC, reg);
  226                 wi_free(dev);
  227                 return (ENXIO);
  228         }
  229 
  230         error = wi_generic_attach(dev);
  231         if (error != 0)
  232                 return (error);
  233 
  234         return (0);
  235 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/wi/if_wi_pci.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/wi/if_wi_pci.c