if_wi_pci.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-4-Clause
    3  *
    4  * Copyright (c) 1997, 1998, 1999
    5  *      Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. All advertising materials mentioning features or use of this software
   16  *    must display the following acknowledgement:
   17  *      This product includes software developed by Bill Paul.
   18  * 4. Neither the name of the author nor the names of any co-contributors
   19  *    may be used to endorse or promote products derived from this software
   20  *    without specific prior written permission.
   21  *
   22  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
   23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   25  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
   26  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   32  * THE POSSIBILITY OF SUCH DAMAGE.
   33  *
   34  * $FreeBSD: releng/12.0/sys/dev/wi/if_wi_pci.c 325966 2017-11-18 14:26:50Z pfg $
   35  */
   36 
   37 /*
   38  * Lucent WaveLAN/IEEE 802.11 PCMCIA driver for FreeBSD.
   39  *
   40  * Written by Bill Paul <wpaul@ctr.columbia.edu>
   41  * Electrical Engineering Department
   42  * Columbia University, New York City
   43  */
   44 
   45 #include <sys/param.h>
   46 #include <sys/kernel.h>
   47 #include <sys/malloc.h>
   48 #include <sys/socket.h>
   49 #include <sys/systm.h>
   50 #include <sys/module.h>
   51 #include <sys/bus.h>
   52 
   53 #include <machine/bus.h>
   54 #include <machine/resource.h>
   55 #include <sys/rman.h>
   56 
   57 #include <dev/pci/pcireg.h>
   58 #include <dev/pci/pcivar.h>
   59 
   60 #include <net/if.h>
   61 #include <net/if_var.h>
   62 #include <net/if_arp.h>
   63 #include <net/ethernet.h>
   64 #include <net/if_media.h>
   65 #include <net/if_types.h>
   66 
   67 #include <net80211/ieee80211_var.h>
   68 #include <net80211/ieee80211_radiotap.h>
   69 
   70 #include <dev/wi/if_wavelan_ieee.h>
   71 #include <dev/wi/if_wireg.h>
   72 #include <dev/wi/if_wivar.h>
   73 
   74 static int wi_pci_probe(device_t);
   75 static int wi_pci_attach(device_t);
   76 static int wi_pci_suspend(device_t);
   77 static int wi_pci_resume(device_t);
   78 
   79 static device_method_t wi_pci_methods[] = {
   80         /* Device interface */
   81         DEVMETHOD(device_probe,         wi_pci_probe),
   82         DEVMETHOD(device_attach,        wi_pci_attach),
   83         DEVMETHOD(device_detach,        wi_detach),
   84         DEVMETHOD(device_shutdown,      wi_shutdown),
   85         DEVMETHOD(device_suspend,       wi_pci_suspend),
   86         DEVMETHOD(device_resume,        wi_pci_resume),
   87 
   88         { 0, 0 }
   89 };
   90 
   91 static driver_t wi_pci_driver = {
   92         "wi",
   93         wi_pci_methods,
   94         sizeof(struct wi_softc)
   95 };
   96 
   97 static struct {
   98         unsigned int vendor,device;
   99         int bus_type;
  100         char *desc;
  101 } pci_ids[] = {
  102         /* Sorted by description */
  103         {0x10b7, 0x7770, WI_BUS_PCI_PLX, "3Com Airconnect"},
  104         {0x16ab, 0x1101, WI_BUS_PCI_PLX, "GLPRISM2 WaveLAN"},
  105         {0x1260, 0x3872, WI_BUS_PCI_NATIVE, "Intersil Prism3"},
  106         {0x1260, 0x3873, WI_BUS_PCI_NATIVE, "Intersil Prism2.5"},
  107         {0x16ab, 0x1102, WI_BUS_PCI_PLX, "Linksys WDT11"},
  108         {0x1385, 0x4100, WI_BUS_PCI_PLX, "Netgear MA301"},
  109         {0x1638, 0x1100, WI_BUS_PCI_PLX, "PRISM2STA WaveLAN"},
  110         {0x111a, 0x1023, WI_BUS_PCI_PLX, "Siemens SpeedStream"},
  111         {0x10b5, 0x9050, WI_BUS_PCI_PLX, "SMC 2602W"},
  112         {0x16ec, 0x3685, WI_BUS_PCI_PLX, "US Robotics 2415"},
  113         {0x4033, 0x7001, WI_BUS_PCI_PLX, "Addtron AWA-100 PCI"},
  114         {0, 0, 0, NULL}
  115 };
  116 
  117 DRIVER_MODULE(wi, pci, wi_pci_driver, wi_devclass, 0, 0);
  118 MODULE_DEPEND(wi, pci, 1, 1, 1);
  119 MODULE_DEPEND(wi, wlan, 1, 1, 1);
  120 
  121 static int
  122 wi_pci_probe(dev)
  123         device_t        dev;
  124 {
  125         struct wi_softc         *sc;
  126         int i;
  127 
  128         sc = device_get_softc(dev);
  129         for(i=0; pci_ids[i].vendor != 0; i++) {
  130                 if ((pci_get_vendor(dev) == pci_ids[i].vendor) &&
  131                         (pci_get_device(dev) == pci_ids[i].device)) {
  132                         sc->wi_bus_type = pci_ids[i].bus_type;
  133                         device_set_desc(dev, pci_ids[i].desc);
  134                         return (BUS_PROBE_DEFAULT);
  135                 }
  136         }
  137         return(ENXIO);
  138 }
  139 
  140 static int
  141 wi_pci_attach(device_t dev)
  142 {
  143         struct wi_softc         *sc;
  144         u_int32_t               command;
  145         u_int16_t               reg;
  146         int                     error;
  147         int                     timeout;
  148 
  149         sc = device_get_softc(dev);
  150 
  151         if (sc->wi_bus_type != WI_BUS_PCI_NATIVE) {
  152                 error = wi_alloc(dev, WI_PCI_IORES);
  153                 if (error)
  154                         return (error);
  155 
  156                 /* Make sure interrupts are disabled. */
  157                 CSR_WRITE_2(sc, WI_INT_EN, 0);
  158                 CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF);
  159 
  160                 /* We have to do a magic PLX poke to enable interrupts */
  161                 sc->local_rid = WI_PCI_LOCALRES;
  162                 sc->local = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
  163                     &sc->local_rid, RF_ACTIVE);
  164                 sc->wi_localtag = rman_get_bustag(sc->local);
  165                 sc->wi_localhandle = rman_get_bushandle(sc->local);
  166                 command = bus_space_read_4(sc->wi_localtag, sc->wi_localhandle,
  167                     WI_LOCAL_INTCSR);
  168                 command |= WI_LOCAL_INTEN;
  169                 bus_space_write_4(sc->wi_localtag, sc->wi_localhandle,
  170                     WI_LOCAL_INTCSR, command);
  171                 bus_release_resource(dev, SYS_RES_IOPORT, sc->local_rid,
  172                     sc->local);
  173                 sc->local = NULL;
  174 
  175                 sc->mem_rid = WI_PCI_MEMRES;
  176                 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
  177                                         &sc->mem_rid, RF_ACTIVE);
  178                 if (sc->mem == NULL) {
  179                         device_printf(dev, "couldn't allocate memory\n");
  180                         wi_free(dev);
  181                         return (ENXIO);
  182                 }
  183                 sc->wi_bmemtag = rman_get_bustag(sc->mem);
  184                 sc->wi_bmemhandle = rman_get_bushandle(sc->mem);
  185 
  186                 /*
  187                  * Write COR to enable PC card
  188                  * This is a subset of the protocol that the pccard bus code
  189                  * would do.  In theory, we should parse the CIS to find the
  190                  * COR offset.  In practice, the COR_OFFSET is always 0x3e0.
  191                  */
  192                 CSM_WRITE_1(sc, WI_COR_OFFSET, WI_COR_VALUE); 
  193                 reg = CSM_READ_1(sc, WI_COR_OFFSET);
  194                 if (reg != WI_COR_VALUE) {
  195                         device_printf(dev, "CSM_READ_1(WI_COR_OFFSET) "
  196                             "wanted %d, got %d\n", WI_COR_VALUE, reg);
  197                         wi_free(dev);
  198                         return (ENXIO);
  199                 }
  200         } else {
  201                 error = wi_alloc(dev, WI_PCI_LMEMRES);
  202                 if (error)
  203                         return (error);
  204 
  205                 CSR_WRITE_2(sc, WI_PCICOR_OFF, WI_PCICOR_RESET);
  206                 DELAY(250000);
  207 
  208                 CSR_WRITE_2(sc, WI_PCICOR_OFF, 0x0000);
  209                 DELAY(500000);
  210 
  211                 timeout=2000000;
  212                 while ((--timeout > 0) &&
  213                     (CSR_READ_2(sc, WI_COMMAND) & WI_CMD_BUSY))
  214                         DELAY(10);
  215 
  216                 if (timeout == 0) {
  217                         device_printf(dev, "couldn't reset prism pci core.\n");
  218                         wi_free(dev);
  219                         return(ENXIO);
  220                 }
  221         }
  222 
  223         CSR_WRITE_2(sc, WI_HFA384X_SWSUPPORT0_OFF, WI_PRISM2STA_MAGIC);
  224         reg = CSR_READ_2(sc, WI_HFA384X_SWSUPPORT0_OFF);
  225         if (reg != WI_PRISM2STA_MAGIC) {
  226                 device_printf(dev,
  227                     "CSR_READ_2(WI_HFA384X_SWSUPPORT0_OFF) "
  228                     "wanted %d, got %d\n", WI_PRISM2STA_MAGIC, reg);
  229                 wi_free(dev);
  230                 return (ENXIO);
  231         }
  232 
  233         error = wi_attach(dev);
  234         if (error != 0)
  235                 wi_free(dev);
  236         return (error);
  237 }
  238 
  239 static int
  240 wi_pci_suspend(device_t dev)
  241 {
  242         struct wi_softc *sc = device_get_softc(dev);
  243 
  244         WI_LOCK(sc);
  245         wi_stop(sc, 1);
  246         WI_UNLOCK(sc);
  247         
  248         return (0);
  249 }
  250 
  251 static int
  252 wi_pci_resume(device_t dev)
  253 {
  254         struct wi_softc *sc = device_get_softc(dev);
  255         struct ieee80211com *ic = &sc->sc_ic;
  256 
  257         WI_LOCK(sc);
  258         if (sc->wi_bus_type != WI_BUS_PCI_NATIVE) {
  259                 WI_UNLOCK(sc);
  260                 return (0);
  261         }
  262         if (ic->ic_nrunning > 0)
  263                 wi_init(sc);
  264         WI_UNLOCK(sc);
  265         return (0);
  266 }
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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
