sys/dev/netif/rtw/if_rtw_pci.c

   1 /*
   2  * Copyright (c) 2006 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Sepherosa Ziehau <sepherosa@gmail.com>
   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  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $NetBSD: if_rtw_pci.c,v 1.4 2005/12/04 17:44:02 christos Exp $
  35  * $DragonFly: src/sys/dev/netif/rtw/if_rtw_pci.c,v 1.5 2008/01/15 09:01:13 sephe Exp $
  36  */
  37
  38 /*
  39  * Copyright (c) 1998, 1999, 2000, 2002 The NetBSD Foundation, Inc.
  40  * All rights reserved.
  41  *
  42  * This code is derived from software contributed to The NetBSD Foundation
  43  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
  44  * NASA Ames Research Center; Charles M. Hannum; and David Young.
  45  *
  46  * Redistribution and use in source and binary forms, with or without
  47  * modification, are permitted provided that the following conditions
  48  * are met:
  49  * 1. Redistributions of source code must retain the above copyright
  50  *    notice, this list of conditions and the following disclaimer.
  51  * 2. Redistributions in binary form must reproduce the above copyright
  52  *    notice, this list of conditions and the following disclaimer in the
  53  *    documentation and/or other materials provided with the distribution.
  54  * 3. All advertising materials mentioning features or use of this software
  55  *    must display the following acknowledgement:
  56  *      This product includes software developed by the NetBSD
  57  *      Foundation, Inc. and its contributors.
  58  * 4. Neither the name of The NetBSD Foundation nor the names of its
  59  *    contributors may be used to endorse or promote products derived
  60  *    from this software without specific prior written permission.
  61  *
  62  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  63  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  64  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  65  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  66  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  67  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  68  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  69  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  70  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  71  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  72  * POSSIBILITY OF SUCH DAMAGE.
  73  */
  74
  75 /*
  76  * PCI bus front-end for the Realtek RTL8180 802.11 MAC/BBP chip.
  77  */
  78
  79 #include <sys/param.h>
  80 #include <sys/kernel.h>
  81 #include <sys/bus.h>
  82 #include <sys/rman.h>
  83 #include <sys/socket.h>
  84
  85 #include <bus/pci/pcivar.h>
  86 #include <bus/pci/pcireg.h>
  87 #include <bus/pci/pcidevs.h>
  88
  89 #include <net/if.h>
  90 #include <net/if_arp.h>
  91 #include <net/if_media.h>
  92
  93 #include <netproto/802_11/ieee80211_var.h>
  94 #include <netproto/802_11/ieee80211_radiotap.h>
  95 #include <netproto/802_11/wlan_ratectl/onoe/ieee80211_onoe_param.h>
  96
  97 #include <dev/netif/rtw/rtwreg.h>
  98 #include <dev/netif/rtw/sa2400reg.h>
  99 #include <dev/netif/rtw/rtwvar.h>
 100
 101 /*
 102  * PCI configuration space registers
 103  */
 104 #define RTW_PCI_IOBA            0x10    /* i/o mapped base */
 105 #define RTW_PCI_MMBA            0x14    /* memory mapped base */
 106
 107 static const struct rtw_pci_reg {
 108         int     reg_type;
 109         int     reg_rid;
 110 } rtw_pci_regs[] = {
 111         /* Prefer IO memory over IO port */
 112         { SYS_RES_MEMORY, RTW_PCI_MMBA },
 113         { SYS_RES_IOPORT, RTW_PCI_IOBA }
 114 };
 115
 116 static const struct rtw_pci_product {
 117         uint16_t        app_vendor;     /* PCI vendor ID */
 118         uint16_t        app_product;    /* PCI product ID */
 119         const char      *app_product_name;
 120 } rtw_pci_products[] = {
 121         { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8180,
 122           "Realtek RTL8180 802.11 MAC/BBP" },
 123         { PCI_VENDOR_BELKIN, PCI_PRODUCT_BELKIN_F5D6001,
 124           "Belkin F5D6001" },
 125
 126         { 0, 0, NULL }
 127 };
 128
 129 static int      rtw_pci_probe(device_t);
 130 static int      rtw_pci_attach(device_t);
 131 static int      rtw_pci_detach(device_t);
 132 static int      rtw_pci_shutdown(device_t);
 133
 134 static device_method_t rtw_pci_methods[] = {
 135         DEVMETHOD(device_probe,         rtw_pci_probe),
 136         DEVMETHOD(device_attach,        rtw_pci_attach),
 137         DEVMETHOD(device_detach,        rtw_pci_detach),
 138         DEVMETHOD(device_shutdown,      rtw_pci_shutdown),
 139 #if 0
 140         DEVMETHOD(device_suspend,       rtw_pci_suspend),
 141         DEVMETHOD(device_resume,        rtw_pci_resume),
 142 #endif
 143         { 0, 0 }
 144 };
 145
 146 static driver_t rtw_pci_driver = {
 147         "rtw",
 148         rtw_pci_methods,
 149         sizeof(struct rtw_softc)
 150 };
 151
 152 DRIVER_MODULE(rtw, pci, rtw_pci_driver, rtw_devclass, 0, 0);
 153 DRIVER_MODULE(rtw, cardbus, rtw_pci_driver, rtw_devclass, 0, 0);
 154
 155 MODULE_DEPEND(rtw, wlan, 1, 1, 1);
 156 MODULE_DEPEND(rtw, wlan_ratectl_onoe, 1, 1, 1);
 157 MODULE_DEPEND(rtw, pci, 1, 1, 1);
 158 MODULE_DEPEND(rtw, cardbus, 1, 1, 1);
 159
 160 static int
 161 rtw_pci_probe(device_t dev)
 162 {
 163         const struct rtw_pci_product *app;
 164         uint16_t vid, did;
 165
 166         vid = pci_get_vendor(dev);
 167         did = pci_get_device(dev);
 168         for (app = rtw_pci_products; app->app_product_name != NULL; app++) {
 169                 if (vid == app->app_vendor && did == app->app_product) {
 170                         device_set_desc(dev, app->app_product_name);
 171                         return 0;
 172                 }
 173         }
 174         return ENXIO;
 175 }
 176
 177 static int
 178 rtw_pci_attach(device_t dev)
 179 {
 180         struct rtw_softc *sc = device_get_softc(dev);
 181         struct rtw_regs *regs = &sc->sc_regs;
 182         int i, error;
 183
 184         /*
 185          * No power management hooks.
 186          * XXX Maybe we should add some!
 187          */
 188         sc->sc_flags |= RTW_F_ENABLED;
 189
 190         sc->sc_rev = pci_get_revid(dev);
 191
 192 #ifndef BURN_BRIDGES
 193         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 194                 uint32_t mem, port, irq;
 195
 196                 mem = pci_read_config(dev, RTW_PCI_MMBA, 4);
 197                 port = pci_read_config(dev, RTW_PCI_IOBA, 4);
 198                 irq = pci_read_config(dev, PCIR_INTLINE, 4);
 199
 200                 device_printf(dev, "chip is in D%d power mode "
 201                     "-- setting to D0\n", pci_get_powerstate(dev));
 202
 203                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 204
 205                 pci_write_config(dev, RTW_PCI_MMBA, mem, 4);
 206                 pci_write_config(dev, RTW_PCI_IOBA, port, 4);
 207                 pci_write_config(dev, PCIR_INTLINE, irq, 4);
 208         }
 209 #endif  /* !BURN_BRIDGES */
 210
 211         /* Enable PCI bus master */
 212         pci_enable_busmaster(dev);
 213
 214         /* Allocate IO memory/port */
 215 #define N(arr)  sizeof(arr) / sizeof(arr[0])
 216         for (i = 0; i < N(rtw_pci_regs); ++i) {
 217                 regs->r_rid = rtw_pci_regs[i].reg_rid;
 218                 regs->r_type = rtw_pci_regs[i].reg_type;
 219                 regs->r_res = bus_alloc_resource_any(dev, regs->r_type,
 220                                                      &regs->r_rid, RF_ACTIVE);
 221                 if (regs->r_res != NULL)
 222                         break;
 223         }
 224 #undef N
 225         if (regs->r_res == NULL) {
 226                 device_printf(dev, "can't allocate IO mem/port\n");
 227                 return ENXIO;
 228         }
 229         regs->r_bh = rman_get_bushandle(regs->r_res);
 230         regs->r_bt = rman_get_bustag(regs->r_res);
 231
 232         error = rtw_attach(dev);
 233         if (error)
 234                 rtw_pci_detach(dev);
 235         return error;
 236 }
 237
 238 static int
 239 rtw_pci_detach(device_t dev)
 240 {
 241         struct rtw_softc *sc = device_get_softc(dev);
 242         struct rtw_regs *regs = &sc->sc_regs;
 243
 244         if (device_is_attached(dev))
 245                 rtw_detach(dev);
 246
 247         if (regs->r_res != NULL) {
 248                 bus_release_resource(dev, regs->r_type, regs->r_rid,
 249                                      regs->r_res);
 250         }
 251         return 0;
 252 }
 253
 254 static int
 255 rtw_pci_shutdown(device_t dev)
 256 {
 257         struct rtw_softc *sc = device_get_softc(dev);
 258         struct ifnet *ifp = &sc->sc_ic.ic_if;
 259
 260         lwkt_serialize_enter(ifp->if_serializer);
 261         rtw_stop(sc, 1);
 262         lwkt_serialize_exit(ifp->if_serializer);
 263         return 0;
 264 }