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/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 <dev/pci/pcireg.h>
   56 #include <dev/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 
   64 #include <net80211/ieee80211_var.h>
   65 #include <net80211/ieee80211_radiotap.h>
   66 
   67 #include <dev/wi/if_wavelan_ieee.h>
   68 #include <dev/wi/if_wireg.h>
   69 #include <dev/wi/if_wivar.h>
   70 
   71 static int wi_pci_probe(device_t);
   72 static int wi_pci_attach(device_t);
   73 static int wi_pci_suspend(device_t);
   74 static int wi_pci_resume(device_t);
   75 
   76 static device_method_t wi_pci_methods[] = {
   77         /* Device interface */
   78         DEVMETHOD(device_probe,         wi_pci_probe),
   79         DEVMETHOD(device_attach,        wi_pci_attach),
   80         DEVMETHOD(device_detach,        wi_detach),
   81         DEVMETHOD(device_shutdown,      wi_shutdown),
   82         DEVMETHOD(device_suspend,       wi_pci_suspend),
   83         DEVMETHOD(device_resume,        wi_pci_resume),
   84 
   85         { 0, 0 }
   86 };
   87 
   88 static driver_t wi_pci_driver = {
   89         "wi",
   90         wi_pci_methods,
   91         sizeof(struct wi_softc)
   92 };
   93 
   94 static struct {
   95         unsigned int vendor,device;
   96         int bus_type;
   97         char *desc;
   98 } pci_ids[] = {
   99         /* Sorted by description */
  100         {0x10b7, 0x7770, WI_BUS_PCI_PLX, "3Com Airconnect"},
  101         {0x16ab, 0x1101, WI_BUS_PCI_PLX, "GLPRISM2 WaveLAN"},
  102         {0x1260, 0x3872, WI_BUS_PCI_NATIVE, "Intersil Prism3"},
  103         {0x1260, 0x3873, WI_BUS_PCI_NATIVE, "Intersil Prism2.5"},
  104         {0x16ab, 0x1102, WI_BUS_PCI_PLX, "Linksys WDT11"},
  105         {0x1385, 0x4100, WI_BUS_PCI_PLX, "Netgear MA301"},
  106         {0x1638, 0x1100, WI_BUS_PCI_PLX, "PRISM2STA WaveLAN"},
  107         {0x111a, 0x1023, WI_BUS_PCI_PLX, "Siemens SpeedStream"},
  108         {0x10b5, 0x9050, WI_BUS_PCI_PLX, "SMC 2602W"},
  109         {0x16ec, 0x3685, WI_BUS_PCI_PLX, "US Robotics 2415"},
  110         {0x4033, 0x7001, WI_BUS_PCI_PLX, "Addtron AWA-100 PCI"},
  111         {0, 0, 0, NULL}
  112 };
  113 
  114 DRIVER_MODULE(wi, pci, wi_pci_driver, wi_devclass, 0, 0);
  115 MODULE_DEPEND(wi, pci, 1, 1, 1);
  116 MODULE_DEPEND(wi, wlan, 1, 1, 1);
  117 
  118 static int
  119 wi_pci_probe(dev)
  120         device_t        dev;
  121 {
  122         struct wi_softc         *sc;
  123         int i;
  124 
  125         sc = device_get_softc(dev);
  126         for(i=0; pci_ids[i].vendor != 0; i++) {
  127                 if ((pci_get_vendor(dev) == pci_ids[i].vendor) &&
  128                         (pci_get_device(dev) == pci_ids[i].device)) {
  129                         sc->wi_bus_type = pci_ids[i].bus_type;
  130                         device_set_desc(dev, pci_ids[i].desc);
  131                         return (BUS_PROBE_DEFAULT);
  132                 }
  133         }
  134         return(ENXIO);
  135 }
  136 
  137 static int
  138 wi_pci_attach(device_t dev)
  139 {
  140         struct wi_softc         *sc;
  141         u_int32_t               command, wanted;
  142         u_int16_t               reg;
  143         int                     error;
  144         int                     timeout;
  145 
  146         sc = device_get_softc(dev);
  147 
  148         command = pci_read_config(dev, PCIR_COMMAND, 4);
  149         wanted = PCIM_CMD_PORTEN|PCIM_CMD_MEMEN;
  150         command |= wanted;
  151         pci_write_config(dev, PCIR_COMMAND, command, 4);
  152         command = pci_read_config(dev, PCIR_COMMAND, 4);
  153         if ((command & wanted) != wanted) {
  154                 device_printf(dev, "wi_pci_attach() failed to enable pci!\n");
  155                 return (ENXIO);
  156         }
  157 
  158         if (sc->wi_bus_type != WI_BUS_PCI_NATIVE) {
  159                 error = wi_alloc(dev, WI_PCI_IORES);
  160                 if (error)
  161                         return (error);
  162 
  163                 /* Make sure interrupts are disabled. */
  164                 CSR_WRITE_2(sc, WI_INT_EN, 0);
  165                 CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF);
  166 
  167                 /* We have to do a magic PLX poke to enable interrupts */
  168                 sc->local_rid = WI_PCI_LOCALRES;
  169                 sc->local = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
  170                     &sc->local_rid, RF_ACTIVE);
  171                 sc->wi_localtag = rman_get_bustag(sc->local);
  172                 sc->wi_localhandle = rman_get_bushandle(sc->local);
  173                 command = bus_space_read_4(sc->wi_localtag, sc->wi_localhandle,
  174                     WI_LOCAL_INTCSR);
  175                 command |= WI_LOCAL_INTEN;
  176                 bus_space_write_4(sc->wi_localtag, sc->wi_localhandle,
  177                     WI_LOCAL_INTCSR, command);
  178                 bus_release_resource(dev, SYS_RES_IOPORT, sc->local_rid,
  179                     sc->local);
  180                 sc->local = NULL;
  181 
  182                 sc->mem_rid = WI_PCI_MEMRES;
  183                 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
  184                                         &sc->mem_rid, RF_ACTIVE);
  185                 if (sc->mem == NULL) {
  186                         device_printf(dev, "couldn't allocate memory\n");
  187                         wi_free(dev);
  188                         return (ENXIO);
  189                 }
  190                 sc->wi_bmemtag = rman_get_bustag(sc->mem);
  191                 sc->wi_bmemhandle = rman_get_bushandle(sc->mem);
  192 
  193                 /*
  194                  * From Linux driver:
  195                  * Write COR to enable PC card
  196                  * This is a subset of the protocol that the pccard bus code
  197                  * would do.
  198                  */
  199                 CSM_WRITE_1(sc, WI_COR_OFFSET, WI_COR_VALUE); 
  200                 reg = CSM_READ_1(sc, WI_COR_OFFSET);
  201                 if (reg != WI_COR_VALUE) {
  202                         device_printf(dev, "CSM_READ_1(WI_COR_OFFSET) "
  203                             "wanted %d, got %d\n", WI_COR_VALUE, reg);
  204                         wi_free(dev);
  205                         return (ENXIO);
  206                 }
  207         } else {
  208                 error = wi_alloc(dev, WI_PCI_LMEMRES);
  209                 if (error)
  210                         return (error);
  211 
  212                 CSR_WRITE_2(sc, WI_HFA384X_PCICOR_OFF, 0x0080);
  213                 DELAY(250000);
  214 
  215                 CSR_WRITE_2(sc, WI_HFA384X_PCICOR_OFF, 0x0000);
  216                 DELAY(500000);
  217 
  218                 timeout=2000000;
  219                 while ((--timeout > 0) &&
  220                     (CSR_READ_2(sc, WI_COMMAND) & WI_CMD_BUSY))
  221                         DELAY(10);
  222 
  223                 if (timeout == 0) {
  224                         device_printf(dev, "couldn't reset prism2.5 core.\n");
  225                         wi_free(dev);
  226                         return(ENXIO);
  227                 }
  228         }
  229 
  230         CSR_WRITE_2(sc, WI_HFA384X_SWSUPPORT0_OFF, WI_PRISM2STA_MAGIC);
  231         reg = CSR_READ_2(sc, WI_HFA384X_SWSUPPORT0_OFF);
  232         if (reg != WI_PRISM2STA_MAGIC) {
  233                 device_printf(dev,
  234                     "CSR_READ_2(WI_HFA384X_SWSUPPORT0_OFF) "
  235                     "wanted %d, got %d\n", WI_PRISM2STA_MAGIC, reg);
  236                 wi_free(dev);
  237                 return (ENXIO);
  238         }
  239 
  240         error = wi_attach(dev);
  241         if (error != 0)
  242                 wi_free(dev);
  243         return (error);
  244 }
  245 
  246 static int
  247 wi_pci_suspend(device_t dev)
  248 {
  249         struct wi_softc *sc = device_get_softc(dev);
  250         struct ieee80211com *ic = &sc->sc_ic;
  251         struct ifnet *ifp = ic->ic_ifp;
  252 
  253         wi_stop(ifp, 1);
  254         
  255         return (0);
  256 }
  257 
  258 static int
  259 wi_pci_resume(device_t dev)
  260 {
  261         struct wi_softc *sc = device_get_softc(dev);
  262         struct ieee80211com *ic = &sc->sc_ic;
  263         struct ifnet *ifp = ic->ic_ifp;
  264 
  265         if (sc->wi_bus_type != WI_BUS_PCI_NATIVE)
  266                 return (0);
  267 
  268         if (ifp->if_flags & IFF_UP) {
  269                 ifp->if_init(ifp->if_softc);
  270                 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
  271                         ifp->if_start(ifp);
  272         }
  273 
  274         return (0);
  275 }
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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
