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  * $FreeBSD$
   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/malloc.h>
   46 #include <sys/socket.h>
   47 #include <sys/systm.h>
   48 #include <sys/module.h>
   49 #include <sys/bus.h>
   50 
   51 #include <machine/bus.h>
   52 #include <machine/resource.h>
   53 #include <sys/rman.h>
   54 
   55 #include <dev/pci/pcireg.h>
   56 #include <dev/pci/pcivar.h>
   57 
   58 #include <net/if.h>
   59 #include <net/if_var.h>
   60 #include <net/if_arp.h>
   61 #include <net/ethernet.h>
   62 #include <net/if_media.h>
   63 #include <net/if_types.h>
   64 
   65 #include <net80211/ieee80211_var.h>
   66 #include <net80211/ieee80211_radiotap.h>
   67 
   68 #include <dev/wi/if_wavelan_ieee.h>
   69 #include <dev/wi/if_wireg.h>
   70 #include <dev/wi/if_wivar.h>
   71 
   72 static int wi_pci_probe(device_t);
   73 static int wi_pci_attach(device_t);
   74 static int wi_pci_suspend(device_t);
   75 static int wi_pci_resume(device_t);
   76 
   77 static device_method_t wi_pci_methods[] = {
   78         /* Device interface */
   79         DEVMETHOD(device_probe,         wi_pci_probe),
   80         DEVMETHOD(device_attach,        wi_pci_attach),
   81         DEVMETHOD(device_detach,        wi_detach),
   82         DEVMETHOD(device_shutdown,      wi_shutdown),
   83         DEVMETHOD(device_suspend,       wi_pci_suspend),
   84         DEVMETHOD(device_resume,        wi_pci_resume),
   85 
   86         { 0, 0 }
   87 };
   88 
   89 static driver_t wi_pci_driver = {
   90         "wi",
   91         wi_pci_methods,
   92         sizeof(struct wi_softc)
   93 };
   94 
   95 static struct {
   96         unsigned int vendor,device;
   97         int bus_type;
   98         char *desc;
   99 } pci_ids[] = {
  100         /* Sorted by description */
  101         {0x10b7, 0x7770, WI_BUS_PCI_PLX, "3Com Airconnect"},
  102         {0x16ab, 0x1101, WI_BUS_PCI_PLX, "GLPRISM2 WaveLAN"},
  103         {0x1260, 0x3872, WI_BUS_PCI_NATIVE, "Intersil Prism3"},
  104         {0x1260, 0x3873, WI_BUS_PCI_NATIVE, "Intersil Prism2.5"},
  105         {0x16ab, 0x1102, WI_BUS_PCI_PLX, "Linksys WDT11"},
  106         {0x1385, 0x4100, WI_BUS_PCI_PLX, "Netgear MA301"},
  107         {0x1638, 0x1100, WI_BUS_PCI_PLX, "PRISM2STA WaveLAN"},
  108         {0x111a, 0x1023, WI_BUS_PCI_PLX, "Siemens SpeedStream"},
  109         {0x10b5, 0x9050, WI_BUS_PCI_PLX, "SMC 2602W"},
  110         {0x16ec, 0x3685, WI_BUS_PCI_PLX, "US Robotics 2415"},
  111         {0x4033, 0x7001, WI_BUS_PCI_PLX, "Addtron AWA-100 PCI"},
  112         {0, 0, 0, NULL}
  113 };
  114 
  115 DRIVER_MODULE(wi, pci, wi_pci_driver, wi_devclass, 0, 0);
  116 MODULE_DEPEND(wi, pci, 1, 1, 1);
  117 MODULE_DEPEND(wi, wlan, 1, 1, 1);
  118 
  119 static int
  120 wi_pci_probe(dev)
  121         device_t        dev;
  122 {
  123         struct wi_softc         *sc;
  124         int i;
  125 
  126         sc = device_get_softc(dev);
  127         for(i=0; pci_ids[i].vendor != 0; i++) {
  128                 if ((pci_get_vendor(dev) == pci_ids[i].vendor) &&
  129                         (pci_get_device(dev) == pci_ids[i].device)) {
  130                         sc->wi_bus_type = pci_ids[i].bus_type;
  131                         device_set_desc(dev, pci_ids[i].desc);
  132                         return (BUS_PROBE_DEFAULT);
  133                 }
  134         }
  135         return(ENXIO);
  136 }
  137 
  138 static int
  139 wi_pci_attach(device_t dev)
  140 {
  141         struct wi_softc         *sc;
  142         u_int32_t               command;
  143         u_int16_t               reg;
  144         int                     error;
  145         int                     timeout;
  146 
  147         sc = device_get_softc(dev);
  148 
  149         if (sc->wi_bus_type != WI_BUS_PCI_NATIVE) {
  150                 error = wi_alloc(dev, WI_PCI_IORES);
  151                 if (error)
  152                         return (error);
  153 
  154                 /* Make sure interrupts are disabled. */
  155                 CSR_WRITE_2(sc, WI_INT_EN, 0);
  156                 CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF);
  157 
  158                 /* We have to do a magic PLX poke to enable interrupts */
  159                 sc->local_rid = WI_PCI_LOCALRES;
  160                 sc->local = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
  161                     &sc->local_rid, RF_ACTIVE);
  162                 sc->wi_localtag = rman_get_bustag(sc->local);
  163                 sc->wi_localhandle = rman_get_bushandle(sc->local);
  164                 command = bus_space_read_4(sc->wi_localtag, sc->wi_localhandle,
  165                     WI_LOCAL_INTCSR);
  166                 command |= WI_LOCAL_INTEN;
  167                 bus_space_write_4(sc->wi_localtag, sc->wi_localhandle,
  168                     WI_LOCAL_INTCSR, command);
  169                 bus_release_resource(dev, SYS_RES_IOPORT, sc->local_rid,
  170                     sc->local);
  171                 sc->local = NULL;
  172 
  173                 sc->mem_rid = WI_PCI_MEMRES;
  174                 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
  175                                         &sc->mem_rid, RF_ACTIVE);
  176                 if (sc->mem == NULL) {
  177                         device_printf(dev, "couldn't allocate memory\n");
  178                         wi_free(dev);
  179                         return (ENXIO);
  180                 }
  181                 sc->wi_bmemtag = rman_get_bustag(sc->mem);
  182                 sc->wi_bmemhandle = rman_get_bushandle(sc->mem);
  183 
  184                 /*
  185                  * Write COR to enable PC card
  186                  * This is a subset of the protocol that the pccard bus code
  187                  * would do.  In theory, we should parse the CIS to find the
  188                  * COR offset.  In practice, the COR_OFFSET is always 0x3e0.
  189                  */
  190                 CSM_WRITE_1(sc, WI_COR_OFFSET, WI_COR_VALUE); 
  191                 reg = CSM_READ_1(sc, WI_COR_OFFSET);
  192                 if (reg != WI_COR_VALUE) {
  193                         device_printf(dev, "CSM_READ_1(WI_COR_OFFSET) "
  194                             "wanted %d, got %d\n", WI_COR_VALUE, reg);
  195                         wi_free(dev);
  196                         return (ENXIO);
  197                 }
  198         } else {
  199                 error = wi_alloc(dev, WI_PCI_LMEMRES);
  200                 if (error)
  201                         return (error);
  202 
  203                 CSR_WRITE_2(sc, WI_PCICOR_OFF, WI_PCICOR_RESET);
  204                 DELAY(250000);
  205 
  206                 CSR_WRITE_2(sc, WI_PCICOR_OFF, 0x0000);
  207                 DELAY(500000);
  208 
  209                 timeout=2000000;
  210                 while ((--timeout > 0) &&
  211                     (CSR_READ_2(sc, WI_COMMAND) & WI_CMD_BUSY))
  212                         DELAY(10);
  213 
  214                 if (timeout == 0) {
  215                         device_printf(dev, "couldn't reset prism pci core.\n");
  216                         wi_free(dev);
  217                         return(ENXIO);
  218                 }
  219         }
  220 
  221         CSR_WRITE_2(sc, WI_HFA384X_SWSUPPORT0_OFF, WI_PRISM2STA_MAGIC);
  222         reg = CSR_READ_2(sc, WI_HFA384X_SWSUPPORT0_OFF);
  223         if (reg != WI_PRISM2STA_MAGIC) {
  224                 device_printf(dev,
  225                     "CSR_READ_2(WI_HFA384X_SWSUPPORT0_OFF) "
  226                     "wanted %d, got %d\n", WI_PRISM2STA_MAGIC, reg);
  227                 wi_free(dev);
  228                 return (ENXIO);
  229         }
  230 
  231         error = wi_attach(dev);
  232         if (error != 0)
  233                 wi_free(dev);
  234         return (error);
  235 }
  236 
  237 static int
  238 wi_pci_suspend(device_t dev)
  239 {
  240         struct wi_softc *sc = device_get_softc(dev);
  241 
  242         WI_LOCK(sc);
  243         wi_stop(sc, 1);
  244         WI_UNLOCK(sc);
  245         
  246         return (0);
  247 }
  248 
  249 static int
  250 wi_pci_resume(device_t dev)
  251 {
  252         struct wi_softc *sc = device_get_softc(dev);
  253         struct ieee80211com *ic = &sc->sc_ic;
  254 
  255         WI_LOCK(sc);
  256         if (sc->wi_bus_type != WI_BUS_PCI_NATIVE) {
  257                 WI_UNLOCK(sc);
  258                 return (0);
  259         }
  260         if (ic->ic_nrunning > 0)
  261                 wi_init(sc);
  262         WI_UNLOCK(sc);
  263         return (0);
  264 }

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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