sys/dev/netif/iwi/if_iwi.c

   1 /*
   2  * Copyright (c) 2004, 2005
   3  *      Damien Bergamini <damien.bergamini@free.fr>.
   4  * Copyright (c) 2004, 2005
   5  *      Andrew Atrens <atrens@nortelnetworks.com>.
   6  *
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice unmodified, this list of conditions, and the following
  14  *    disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  * $DragonFly: src/sys/dev/netif/iwi/if_iwi.c,v 1.2 2005/03/07 10:13:22 joerg Exp $
  32  */
  33
  34 #include "opt_inet.h"
  35
  36 #include <sys/cdefs.h>
  37
  38 /*-
  39  * Intel(R) PRO/Wireless 2200BG/2915ABG driver
  40  * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
  41  */
  42
  43 #include <sys/param.h>
  44 #include <sys/sysctl.h>
  45 #include <sys/sockio.h>
  46 #include <sys/mbuf.h>
  47 #include <sys/kernel.h>
  48 #include <sys/kthread.h>
  49 #include <sys/socket.h>
  50 #include <sys/systm.h>
  51 #include <sys/malloc.h>
  52 #include <sys/module.h>
  53 #include <sys/bus.h>
  54 #include <sys/endian.h>
  55 #include <sys/proc.h>
  56 #include <sys/ucred.h>
  57 #include <sys/thread2.h>
  58
  59 #include <machine/bus.h>
  60 #include <machine/resource.h>
  61 #include <machine/clock.h>
  62 #include <sys/rman.h>
  63
  64 #include <bus/pci/pcireg.h>
  65 #include <bus/pci/pcivar.h>
  66
  67 #include <net/bpf.h>
  68 #include <net/if.h>
  69 #include <net/if_arp.h>
  70 #include <net/ifq_var.h>
  71 #include <net/ethernet.h>
  72 #include <net/if_dl.h>
  73 #include <net/if_media.h>
  74 #include <net/if_types.h>
  75 #include <net/ifq_var.h>
  76
  77 #include <netinet/in.h>
  78 #include <netinet/in_systm.h>
  79 #include <netinet/in_var.h>
  80 #include <netinet/ip.h>
  81 #include <netinet/if_ether.h>
  82
  83 #ifdef IPX
  84 #include <netproto/ipx/ipx.h>
  85 #include <netproto/ipx/ipx_if.h>
  86 #endif
  87
  88 #include <netproto/802_11/ieee80211_var.h>
  89 #include <netproto/802_11/ieee80211_ioctl.h>
  90 #include <netproto/802_11/ieee80211_radiotap.h>
  91 #include <netproto/802_11/if_wavelan_ieee.h>
  92
  93 #include "if_iwireg.h"
  94 #include "if_iwivar.h"
  95
  96 #ifdef IWI_DEBUG
  97 #define DPRINTF(x)      if (sc->debug_level > 0) printf x
  98 #define DPRINTFN(n, x)  if (sc->debug_level >= (n)) printf x
  99
 100 #else
 101 #define DPRINTF(x)
 102 #define DPRINTFN(n, x)
 103 #endif
 104
 105 MODULE_DEPEND(iwi, pci,  1, 1, 1);
 106 MODULE_DEPEND(iwi, wlan, 1, 1, 1);
 107
 108 struct iwi_dump_buffer {
 109         u_int32_t buf[128];
 110 };
 111
 112 struct iwi_ident {
 113         u_int16_t       vendor;
 114         u_int16_t       device;
 115         const char      *name;
 116 };
 117
 118 static const struct iwi_ident iwi_ident_table[] = {
 119         { 0x8086, 0x4220, "Intel(R) PRO/Wireless 2200BG MiniPCI" },
 120         { 0x8086, 0x4223, "Intel(R) PRO/Wireless 2915ABG MiniPCI" },
 121         { 0x8086, 0x4224, "Intel(R) PRO/Wireless 2915ABG MiniPCI" },
 122
 123         { 0, 0, NULL }
 124 };
 125
 126 static const struct ieee80211_rateset iwi_rateset_11a =
 127         { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } };
 128
 129 static const struct ieee80211_rateset iwi_rateset_11b =
 130         { 4, { 2, 4, 11, 22 } };
 131
 132 static const struct ieee80211_rateset iwi_rateset_11g =
 133         { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } };
 134
 135 static int              iwi_dma_alloc(struct iwi_softc *);
 136 static void             iwi_release(struct iwi_softc *);
 137 static int              iwi_media_change(struct ifnet *);
 138 static void             iwi_media_status(struct ifnet *, struct ifmediareq *);
 139 static u_int16_t        iwi_read_prom_word(struct iwi_softc *, u_int8_t);
 140 static int              iwi_newstate(struct ieee80211com *,
 141                             enum ieee80211_state, int);
 142 static void             iwi_fix_channel(struct iwi_softc *, struct mbuf *);
 143 static void             iwi_frame_intr(struct iwi_softc *,
 144                             struct iwi_rx_buf *, int, struct iwi_frame *);
 145 static void             iwi_notification_intr(struct iwi_softc *,
 146                             struct iwi_notif *);
 147 static void             iwi_rx_intr(struct iwi_softc *);
 148 static void             iwi_tx_intr(struct iwi_softc *);
 149 static void             iwi_intr(void *);
 150 static void             iwi_dma_map_buf(void *, bus_dma_segment_t *, int,
 151                             bus_size_t, int);
 152 static void             iwi_dma_map_addr(void *, bus_dma_segment_t *, int, int);
 153 static int              iwi_cmd(struct iwi_softc *, u_int8_t, void *, u_int8_t,
 154                             int);
 155 static int              iwi_tx_start(struct ifnet *, struct mbuf *,
 156                             struct ieee80211_node *);
 157 static void             iwi_start(struct ifnet *);
 158 static void             iwi_watchdog(struct ifnet *);
 159 static int              iwi_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *cr);
 160 static void             iwi_stop_master(struct iwi_softc *);
 161 static int              iwi_reset(struct iwi_softc *);
 162 static int              iwi_load_ucode(struct iwi_softc *, void *, int);
 163 static int              iwi_load_firmware(struct iwi_softc *, void *, int);
 164 static int              iwi_cache_firmware(struct iwi_softc *, void *, int);
 165 static void             iwi_free_firmware(struct iwi_softc *);
 166 static int              iwi_config(struct iwi_softc *);
 167 static int              iwi_scan(struct iwi_softc *);
 168 static int              iwi_auth_and_assoc(struct iwi_softc *);
 169 static void             iwi_init(void *);
 170 static void             iwi_init_locked(void *);
 171 static void             iwi_stop(void *);
 172 static void             iwi_dump_fw_event_log(struct iwi_softc *sc);
 173 static void             iwi_dump_fw_error_log(struct iwi_softc *sc);
 174 static u_int8_t         iwi_find_station(struct iwi_softc *sc, u_int8_t *mac);
 175 static int8_t           iwi_cache_station(struct iwi_softc *sc, u_int8_t *mac);
 176 static int              iwi_adapter_config(struct iwi_softc *sc, int is_a, int cmd_wait);
 177
 178 static int              iwi_sysctl_bt_coexist(SYSCTL_HANDLER_ARGS);
 179 static int              iwi_sysctl_bg_autodetect(SYSCTL_HANDLER_ARGS);
 180 static int              iwi_sysctl_cts_to_self(SYSCTL_HANDLER_ARGS);
 181 static int              iwi_sysctl_antenna_diversity(SYSCTL_HANDLER_ARGS);
 182 static int              iwi_sysctl_radio(SYSCTL_HANDLER_ARGS);
 183 static int              iwi_sysctl_stats(SYSCTL_HANDLER_ARGS);
 184 static int              iwi_sysctl_dump_logs(SYSCTL_HANDLER_ARGS);
 185 static int              iwi_sysctl_neg_best_rates_first(SYSCTL_HANDLER_ARGS);
 186 static int              iwi_sysctl_disable_unicast_decryption(SYSCTL_HANDLER_ARGS);
 187 static int              iwi_sysctl_disable_multicast_decryption(SYSCTL_HANDLER_ARGS);
 188
 189 static __inline u_int8_t MEM_READ_1(struct iwi_softc *sc, u_int32_t addr)
 190 {
 191         CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
 192         return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA);
 193 }
 194
 195 static __inline u_int32_t MEM_READ_4(struct iwi_softc *sc, u_int32_t addr)
 196 {
 197         CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
 198         return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA);
 199 }
 200
 201 static int iwi_probe(device_t);
 202 static int iwi_attach(device_t);
 203 static int iwi_detach(device_t);
 204 static int iwi_shutdown(device_t);
 205 static int iwi_suspend(device_t);
 206 static int iwi_resume(device_t);
 207
 208 static device_method_t iwi_methods[] = {
 209         /* Device interface */
 210         DEVMETHOD(device_probe,         iwi_probe),
 211         DEVMETHOD(device_attach,        iwi_attach),
 212         DEVMETHOD(device_detach,        iwi_detach),
 213         DEVMETHOD(device_shutdown,      iwi_shutdown),
 214         DEVMETHOD(device_suspend,       iwi_suspend),
 215         DEVMETHOD(device_resume,        iwi_resume),
 216
 217         { 0, 0 }
 218 };
 219
 220 static driver_t iwi_driver = {
 221         "iwi",
 222         iwi_methods,
 223         sizeof (struct iwi_softc),
 224         0, /* baseclasses */
 225         0, /* refs */
 226         0  /* ops */
 227 };
 228
 229 static devclass_t iwi_devclass;
 230
 231 DRIVER_MODULE(iwi, pci, iwi_driver, iwi_devclass, 0, 0);
 232
 233 static int
 234 iwi_probe(device_t dev)
 235 {
 236         const struct iwi_ident *ident;
 237
 238         for (ident = iwi_ident_table; ident->name != NULL; ident++) {
 239                 if (pci_get_vendor(dev) == ident->vendor &&
 240                     pci_get_device(dev) == ident->device) {
 241                         device_set_desc(dev, ident->name);
 242                         return 0;
 243                 }
 244         }
 245         return ENXIO;
 246 }
 247
 248 static void
 249 iwi_fw_monitor(void *arg)
 250 {
 251         struct iwi_softc *sc = (struct iwi_softc *)arg;
 252         int error, boff;
 253         for ( ;; ) {
 254                 error = tsleep(IWI_FW_WAKE_MONITOR(sc), 0, "iwifwm", 0 );
 255                 if ( error == 0 ) {
 256                         if ( sc->flags & IWI_FLAG_EXIT ) {
 257                                 sc->flags &= ~( IWI_FLAG_EXIT );
 258                                 break;
 259                         } else if ( sc->flags & IWI_FLAG_RESET ) {
 260                                 device_printf(sc->sc_dev, "firmware reset\n");
 261                                 for ( boff = 1; sc->flags & IWI_FLAG_RESET ; boff++ ) {
 262                                         if ( sc->debug_level > 0 )
 263                                                 iwi_dump_fw_error_log(sc);
 264                                         iwi_init_locked(sc);
 265                                         if ((sc->flags & IWI_FLAG_FW_INITED))
 266                                                 sc->flags &= ~( IWI_FLAG_RESET );
 267                                         error = tsleep( IWI_FW_CMD_ACKED(sc), 0,
 268                                                        "iwirun", boff * hz );
 269                                 }
 270                         }
 271                 }
 272         }
 273         wakeup(IWI_FW_MON_EXIT(sc));
 274         kthread_exit();
 275 }
 276
 277 static int
 278 iwi_start_fw_monitor_thread( struct iwi_softc *sc )
 279 {
 280        if (kthread_create(iwi_fw_monitor, sc, &sc->event_thread,
 281                 "%s%d:fw-monitor", device_get_name(sc->sc_dev),
 282                 device_get_unit(sc->sc_dev))) {
 283                 device_printf (sc->sc_dev,
 284                    "unable to create firmware monitor thread.\n");
 285                 return -1;
 286         }
 287         return 0;
 288 }
 289
 290 /* Base Address Register */
 291 #define IWI_PCI_BAR0    0x10
 292
 293 static int
 294 iwi_attach(device_t dev)
 295 {
 296         struct iwi_softc *sc = device_get_softc(dev);
 297         struct ieee80211com *ic = &sc->sc_ic;
 298         struct ifnet *ifp = &ic->ic_if;
 299         u_int16_t val;
 300         int error, rid, i;
 301
 302         sc->sc_dev = dev;
 303
 304         IWI_LOCK_INIT( &sc->sc_lock );
 305         IWI_LOCK_INIT( &sc->sc_intrlock );
 306
 307         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 308                 device_printf(dev, "chip is in D%d power mode "
 309                     "-- setting to D0\n", pci_get_powerstate(dev));
 310                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 311         }
 312
 313         pci_write_config(dev, 0x41, 0, 1);
 314
 315         /* enable bus-mastering */
 316         pci_enable_busmaster(dev);
 317
 318         sc->num_stations = 0;
 319
 320         /* map the register window */
 321         rid = IWI_PCI_BAR0;
 322         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
 323         if (sc->mem == NULL) {
 324                 device_printf(dev, "could not allocate memory resource\n");
 325                 goto fail;
 326         }
 327
 328         sc->sc_st = rman_get_bustag(sc->mem);
 329         sc->sc_sh = rman_get_bushandle(sc->mem);
 330
 331         rid = 0;
 332         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE |
 333             RF_SHAREABLE);
 334         if (sc->irq == NULL) {
 335                 device_printf(dev, "could not allocate interrupt resource\n");
 336                 goto fail;
 337         }
 338
 339         if (iwi_reset(sc) != 0) {
 340                 device_printf(dev, "could not reset adapter\n");
 341                 goto fail;
 342         }
 343
 344         if (iwi_start_fw_monitor_thread(sc) ) {
 345                 device_printf(dev, "could not start f/w reset thread\n");
 346                 goto fail;
 347         }
 348
 349         if (iwi_dma_alloc(sc) != 0) {
 350                 device_printf(dev, "could not allocate DMA resources\n");
 351                 goto fail;
 352         }
 353
 354         ic->ic_phytype = IEEE80211_T_OFDM;
 355         ic->ic_opmode  = IEEE80211_M_STA;
 356         ic->ic_state   = IEEE80211_S_INIT;
 357
 358         /* set device capabilities */
 359         ic->ic_caps = IEEE80211_C_IBSS | IEEE80211_C_PMGT | IEEE80211_C_WEP |
 360             IEEE80211_C_TXPMGT | IEEE80211_C_SHPREAMBLE;
 361
 362         /* read MAC address from EEPROM */
 363         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0);
 364         ic->ic_myaddr[0] = val >> 8;
 365         ic->ic_myaddr[1] = val & 0xff;
 366         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1);
 367         ic->ic_myaddr[2] = val >> 8;
 368         ic->ic_myaddr[3] = val & 0xff;
 369         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2);
 370         ic->ic_myaddr[4] = val >> 8;
 371         ic->ic_myaddr[5] = val & 0xff;
 372
 373         if (pci_get_device(dev) != 0x4220) {
 374                 /* set supported .11a rates */
 375                 ic->ic_sup_rates[IEEE80211_MODE_11A] = iwi_rateset_11a;
 376
 377                 /* set supported .11a channels */
 378                 for (i = 36; i <= 64; i += 4) {
 379                         ic->ic_channels[i].ic_freq =
 380                             ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
 381                         ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
 382                 }
 383                 for (i = 149; i <= 165; i += 4) {
 384                         ic->ic_channels[i].ic_freq =
 385                             ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
 386                         ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
 387                 }
 388         }
 389
 390         /* set supported .11b and .11g rates */
 391         ic->ic_sup_rates[IEEE80211_MODE_11B] = iwi_rateset_11b;
 392         ic->ic_sup_rates[IEEE80211_MODE_11G] = iwi_rateset_11g;
 393
 394         /* set supported .11b and .11g channels (1 through 14) */
 395         for (i = 1; i <= 14; i++) {
 396                 ic->ic_channels[i].ic_freq =
 397                     ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 398                 ic->ic_channels[i].ic_flags =
 399                     IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM |
 400                     IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ;
 401         }
 402
 403         /* default to authmode OPEN */
 404         sc->authmode = IEEE80211_AUTH_OPEN;
 405
 406         /* IBSS channel undefined for now */
 407         ic->ic_ibss_chan = &ic->ic_channels[0];
 408
 409         ifp->if_softc = sc;
 410         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 411         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 412         ifp->if_init = iwi_init_locked;
 413         ifp->if_ioctl = iwi_ioctl;
 414         ifp->if_start = iwi_start;
 415         ifp->if_watchdog = iwi_watchdog;
 416         ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
 417         ifq_set_ready(&ifp->if_snd);
 418
 419         ieee80211_ifattach(ifp);
 420         /* override state transition machine */
 421         sc->sc_newstate = ic->ic_newstate;
 422         ic->ic_newstate = iwi_newstate;
 423         ieee80211_media_init(ifp, iwi_media_change, iwi_media_status);
 424
 425         bpfattach_dlt(ifp, DLT_IEEE802_11_RADIO,
 426             sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf);
 427
 428         sc->sc_rxtap_len = sizeof sc->sc_rxtapu;
 429         sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
 430         sc->sc_rxtap.wr_ihdr.it_present = htole32(IWI_RX_RADIOTAP_PRESENT);
 431
 432         sc->sc_txtap_len = sizeof sc->sc_txtapu;
 433         sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
 434         sc->sc_txtap.wt_ihdr.it_present = htole32(IWI_TX_RADIOTAP_PRESENT);
 435
 436         /*
 437          * Hook our interrupt after all initialization is complete
 438          */
 439         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 440             iwi_intr, sc, &sc->sc_ih);
 441         if (error != 0) {
 442                 device_printf(dev, "could not set up interrupt\n");
 443                 goto fail;
 444         }
 445
 446         /*
 447          * Add sysctl knobs
 448          *
 449          * use -1 to indicate 'default / not set'
 450          */
 451
 452         sc->enable_bg_autodetect         = -1;
 453         sc->enable_bt_coexist            = -1;
 454         sc->enable_cts_to_self           = -1;
 455         sc->antenna_diversity            = -1;
 456         sc->enable_neg_best_first        = -1;
 457         sc->disable_unicast_decryption   = -1;
 458         sc->disable_multicast_decryption = -1;
 459
 460         sysctl_ctx_init(&sc->sysctl_ctx);
 461         sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
 462                                 SYSCTL_STATIC_CHILDREN(_hw),
 463                                 OID_AUTO,
 464                                 device_get_nameunit(dev),
 465                                 CTLFLAG_RD,
 466                                 0, "");
 467
 468         if (sc->sysctl_tree == NULL) {
 469                 error = EIO;
 470                 goto fail;
 471         }
 472
 473         SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
 474                        OID_AUTO, "debug", CTLFLAG_RW, &sc->debug_level, 0,
 475                       "Set driver debug level (0 = off)");
 476
 477         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 478                         SYSCTL_CHILDREN(sc->sysctl_tree),
 479                         OID_AUTO, "cts_to_self", CTLTYPE_INT|CTLFLAG_RW,
 480                         (void *)sc, 0, iwi_sysctl_cts_to_self, "I",
 481                         "Enable cts to self [0 = Off] [1 = On] [-1 = Auto]" );
 482
 483         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 484                         SYSCTL_CHILDREN(sc->sysctl_tree),
 485                         OID_AUTO, "antenna_diversity", CTLTYPE_INT|CTLFLAG_RW,
 486                         (void *)sc, 0, iwi_sysctl_antenna_diversity,
 487                         "I", "Set antenna diversity [0 = Both] "
 488                         "[1 = Antenna A] [3 = Antenna B] [-1 = Auto]" );
 489
 490         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 491                         SYSCTL_CHILDREN(sc->sysctl_tree),
 492                         OID_AUTO, "bluetooth_coexist", CTLTYPE_INT|CTLFLAG_RW,
 493                         (void *)sc, 0, iwi_sysctl_bt_coexist,
 494                         "I", "Enable bluetooth coexistence heuristics "
 495                         "[0 = Off] [1 = On] [-1 = Auto]" );
 496
 497         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 498                         SYSCTL_CHILDREN(sc->sysctl_tree),
 499                         OID_AUTO, "bg_autodetect", CTLTYPE_INT|CTLFLAG_RW,
 500                         (void *)sc, 0, iwi_sysctl_bg_autodetect,
 501                         "I", "Set b/g autodetect [0 = Off] [1 = On] [-1 = Auto]" );
 502
 503
 504         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 505                         SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "radio",
 506                         CTLTYPE_INT | CTLFLAG_RD, sc, 0, iwi_sysctl_radio, "I",
 507                         "Radio transmitter switch");
 508
 509         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 510                         SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "stats",
 511                         CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, iwi_sysctl_stats,
 512                         "S,iwi_dump_buffer", "statistics");
 513
 514         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 515                         SYSCTL_CHILDREN(sc->sysctl_tree),
 516                         OID_AUTO, "firmware_logs", CTLTYPE_INT|CTLFLAG_RW,
 517                         (void *)sc, 0, iwi_sysctl_dump_logs, "I", "Dump firmware logs");
 518
 519         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 520                         SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 521                         "neg_best_rates_first",
 522                         CTLTYPE_INT | CTLFLAG_RW, sc, 0,
 523                         iwi_sysctl_neg_best_rates_first, "I",
 524                          "Negotiate highest rates first.");
 525
 526         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 527                         SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 528                         "disable_unicast_decrypt",
 529                         CTLTYPE_INT | CTLFLAG_RW, sc, 0,
 530                         iwi_sysctl_disable_unicast_decryption, "I",
 531                          "Disable unicast decryption.");
 532
 533         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 534                         SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 535                         "disable_multicast_decrypt",
 536                         CTLTYPE_INT | CTLFLAG_RW, sc, 0,
 537                         iwi_sysctl_disable_multicast_decryption, "I",
 538                          "Disable multicast decryption.");
 539
 540         return 0;
 541
 542 fail:   iwi_detach(dev);
 543         return ENXIO;
 544 }
 545
 546 static int
 547 iwi_detach(device_t dev)
 548 {
 549         struct iwi_softc *sc = device_get_softc(dev);
 550         struct ifnet *ifp = &sc->sc_ic.ic_if;
 551         IWI_LOCK_INFO;
 552         IWI_IPLLOCK_INFO;
 553
 554         sc->flags |= IWI_FLAG_EXIT;
 555         wakeup(IWI_FW_WAKE_MONITOR(sc)); /* Stop firmware monitor. */
 556
 557         (void) tsleep(IWI_FW_MON_EXIT(sc), 0, "iwiexi", 10 * hz );
 558
 559         IWI_LOCK(sc);
 560         IWI_IPLLOCK(sc);
 561
 562         iwi_stop(sc);
 563         iwi_free_firmware(sc);
 564
 565         if ( sc->sysctl_tree ) {
 566                 crit_enter();
 567                 sysctl_ctx_free(&sc->sysctl_ctx);
 568                 crit_exit();
 569                 sc->sysctl_tree = 0;
 570         }
 571
 572         IWI_IPLUNLOCK(sc);
 573         IWI_UNLOCK(sc);
 574
 575         bpfdetach(ifp);
 576
 577         ieee80211_ifdetach(ifp);
 578
 579         iwi_release(sc);
 580
 581         if (sc->irq != NULL) {
 582                 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 583                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq);
 584         }
 585
 586         if (sc->mem != NULL)
 587                 bus_release_resource(dev, SYS_RES_MEMORY, IWI_PCI_BAR0,
 588                     sc->mem);
 589
 590         IWI_LOCK_DESTROY(&(sc->sc_lock));
 591         IWI_LOCK_DESTROY(&(sc->sc_intrlock));
 592
 593         return 0;
 594 }
 595
 596 static int
 597 iwi_dma_alloc(struct iwi_softc *sc)
 598 {
 599         int i, error;
 600
 601         error = bus_dma_tag_create(NULL, /* parent */
 602                                    1, 0,
 603                                    BUS_SPACE_MAXADDR_32BIT,
 604                                    BUS_SPACE_MAXADDR,
 605                                    NULL, NULL,
 606                                    MAXBSIZE, 128,
 607                                    BUS_SPACE_MAXSIZE_32BIT,
 608                                    BUS_DMA_ALLOCNOW,
 609                                    &sc->iwi_parent_tag );
 610         if (error != 0) {
 611                 device_printf(sc->sc_dev, "could not create parent tag\n");
 612                 goto fail;
 613         }
 614         /*
 615          * Allocate and map Tx ring
 616          */
 617         error = bus_dma_tag_create(sc->iwi_parent_tag, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 618             BUS_SPACE_MAXADDR, NULL, NULL,
 619             sizeof (struct iwi_tx_desc) * IWI_TX_RING_SIZE, 1,
 620             sizeof (struct iwi_tx_desc) * IWI_TX_RING_SIZE,
 621             BUS_DMA_ALLOCNOW, &sc->tx_ring_dmat);
 622         if (error != 0) {
 623                 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
 624                 goto fail;
 625         }
 626
 627         error = bus_dmamem_alloc(sc->tx_ring_dmat,(void **) &sc->tx_desc,
 628             BUS_DMA_WAITOK | BUS_DMA_ZERO, &sc->tx_ring_map);
 629         if (error != 0) {
 630                 device_printf(sc->sc_dev,
 631                     "could not allocate tx ring DMA memory\n");
 632                 goto fail;
 633         }
 634
 635         error = bus_dmamap_load(sc->tx_ring_dmat, sc->tx_ring_map,
 636             sc->tx_desc, sizeof (struct iwi_tx_desc) * IWI_TX_RING_SIZE,
 637             iwi_dma_map_addr, &sc->tx_ring_pa, 0);
 638         if (error != 0) {
 639                 device_printf(sc->sc_dev, "could not load tx ring DMA map\n");
 640                 goto fail;
 641         }
 642
 643         /*
 644          * Allocate and map command ring
 645          */
 646         error = bus_dma_tag_create(sc->iwi_parent_tag, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 647             BUS_SPACE_MAXADDR, NULL, NULL,
 648             sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_SIZE, 1,
 649             sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_SIZE,
 650             BUS_DMA_ALLOCNOW,
 651             &sc->cmd_ring_dmat);
 652         if (error != 0) {
 653                 device_printf(sc->sc_dev,
 654                     "could not create command ring DMA tag\n");
 655                 goto fail;
 656         }
 657
 658         error = bus_dmamem_alloc(sc->cmd_ring_dmat, (void **)&sc->cmd_desc,
 659             BUS_DMA_WAITOK | BUS_DMA_ZERO, &sc->cmd_ring_map);
 660         if (error != 0) {
 661                 device_printf(sc->sc_dev,
 662                     "could not allocate command ring DMA memory\n");
 663                 goto fail;
 664         }
 665
 666         error = bus_dmamap_load(sc->cmd_ring_dmat, sc->cmd_ring_map,
 667             sc->cmd_desc, sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_SIZE,
 668             iwi_dma_map_addr, &sc->cmd_ring_pa, 0);
 669         if (error != 0) {
 670                 device_printf(sc->sc_dev,
 671                     "could not load command ring DMA map\n");
 672                 goto fail;
 673         }
 674
 675         /*
 676          * Allocate Tx buffers DMA maps
 677          */
 678         error = bus_dma_tag_create(sc->iwi_parent_tag, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 679             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IWI_MAX_NSEG, MCLBYTES,
 680             BUS_DMA_ALLOCNOW, &sc->tx_buf_dmat);
 681         if (error != 0) {
 682                 device_printf(sc->sc_dev, "could not create tx buf DMA tag\n");
 683                 goto fail;
 684         }
 685
 686         for (i = 0; i < IWI_TX_RING_SIZE; i++) {
 687                 error = bus_dmamap_create(sc->tx_buf_dmat, 0,
 688                     &sc->tx_buf[i].map);
 689                 if (error != 0) {
 690                         device_printf(sc->sc_dev,
 691                             "could not create tx buf DMA map");
 692                         goto fail;
 693                 }
 694         }
 695
 696         /*
 697          * Allocate and map Rx buffers
 698          */
 699         error = bus_dma_tag_create(sc->iwi_parent_tag, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 700             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES,
 701             BUS_DMA_ALLOCNOW, &sc->rx_buf_dmat);
 702         if (error != 0) {
 703                 device_printf(sc->sc_dev, "could not create rx buf DMA tag\n");
 704                 goto fail;
 705         }
 706
 707         for (i = 0; i < IWI_RX_RING_SIZE; i++) {
 708
 709                 error = bus_dmamap_create(sc->rx_buf_dmat, 0,
 710                     &sc->rx_buf[i].map);
 711                 if (error != 0) {
 712                         device_printf(sc->sc_dev,
 713                             "could not create rx buf DMA map");
 714                         goto fail;
 715                 }
 716
 717                 sc->rx_buf[i].m = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
 718                 if (sc->rx_buf[i].m == NULL) {
 719                         device_printf(sc->sc_dev,
 720                             "could not allocate rx mbuf\n");
 721                         error = ENOMEM;
 722                         goto fail;
 723                 }
 724
 725                 error = bus_dmamap_load(sc->rx_buf_dmat, sc->rx_buf[i].map,
 726                     mtod(sc->rx_buf[i].m, void *), MCLBYTES, iwi_dma_map_addr,
 727                     &sc->rx_buf[i].physaddr, 0);
 728                 if (error != 0) {
 729                         device_printf(sc->sc_dev,
 730                             "could not load rx buf DMA map");
 731                         goto fail;
 732                 }
 733         }
 734
 735         return 0;
 736
 737 fail:   iwi_release(sc);
 738         return error;
 739 }
 740
 741 static void
 742 iwi_release(struct iwi_softc *sc)
 743 {
 744         int i;
 745
 746         if (sc->tx_ring_dmat != NULL) {
 747                 if (sc->tx_desc != NULL) {
 748                         bus_dmamap_sync(sc->tx_ring_dmat, sc->tx_ring_map,
 749                             BUS_DMASYNC_POSTWRITE);
 750                         bus_dmamap_unload(sc->tx_ring_dmat, sc->tx_ring_map);
 751                         bus_dmamem_free(sc->tx_ring_dmat, sc->tx_desc,
 752                             sc->tx_ring_map);
 753                 }
 754                 bus_dma_tag_destroy(sc->tx_ring_dmat);
 755         }
 756
 757         if (sc->cmd_ring_dmat != NULL) {
 758                 if (sc->cmd_desc != NULL) {
 759                         bus_dmamap_sync(sc->cmd_ring_dmat, sc->cmd_ring_map,
 760                             BUS_DMASYNC_POSTWRITE);
 761                         bus_dmamap_unload(sc->cmd_ring_dmat, sc->cmd_ring_map);
 762                         bus_dmamem_free(sc->cmd_ring_dmat, sc->cmd_desc,
 763                             sc->cmd_ring_map);
 764                 }
 765                 bus_dma_tag_destroy(sc->cmd_ring_dmat);
 766         }
 767
 768         if (sc->tx_buf_dmat != NULL) {
 769                 for (i = 0; i < IWI_TX_RING_SIZE; i++) {
 770                         if (sc->tx_buf[i].m != NULL) {
 771                                 bus_dmamap_sync(sc->tx_buf_dmat,
 772                                     sc->tx_buf[i].map, BUS_DMASYNC_POSTWRITE);
 773                                 bus_dmamap_unload(sc->tx_buf_dmat,
 774                                     sc->tx_buf[i].map);
 775                                 m_freem(sc->tx_buf[i].m);
 776                         }
 777                         bus_dmamap_destroy(sc->tx_buf_dmat, sc->tx_buf[i].map);
 778                 }
 779                 bus_dma_tag_destroy(sc->tx_buf_dmat);
 780         }
 781
 782         if (sc->rx_buf_dmat != NULL) {
 783                 for (i = 0; i < IWI_RX_RING_SIZE; i++) {
 784                         if (sc->rx_buf[i].m != NULL) {
 785                                 bus_dmamap_sync(sc->rx_buf_dmat,
 786                                     sc->rx_buf[i].map, BUS_DMASYNC_POSTREAD);
 787                                 bus_dmamap_unload(sc->rx_buf_dmat,
 788                                     sc->rx_buf[i].map);
 789                                 m_freem(sc->rx_buf[i].m);
 790                         }
 791                         bus_dmamap_destroy(sc->rx_buf_dmat, sc->rx_buf[i].map);
 792                 }
 793                 bus_dma_tag_destroy(sc->rx_buf_dmat);
 794         }
 795         if ( sc->iwi_parent_tag != NULL ) {
 796                 bus_dma_tag_destroy(sc->iwi_parent_tag);
 797         }
 798 }
 799
 800 static int
 801 iwi_shutdown(device_t dev)
 802 {
 803         struct iwi_softc *sc = device_get_softc(dev);
 804         IWI_LOCK_INFO;
 805
 806         IWI_LOCK(sc);
 807
 808         iwi_stop(sc);
 809
 810         IWI_UNLOCK(sc);
 811
 812         return 0;
 813 }
 814
 815 static int
 816 iwi_suspend(device_t dev)
 817 {
 818         struct iwi_softc *sc = device_get_softc(dev);
 819
 820         IWI_LOCK_INFO;
 821
 822         IWI_LOCK(sc);
 823
 824         iwi_stop(sc);
 825
 826         IWI_UNLOCK(sc);
 827
 828         return 0;
 829 }
 830
 831 static int
 832 iwi_resume(device_t dev)
 833 {
 834         struct iwi_softc *sc = device_get_softc(dev);
 835         struct ifnet *ifp = &sc->sc_ic.ic_if;
 836         IWI_LOCK_INFO;
 837
 838         IWI_LOCK(sc);
 839
 840         pci_write_config(dev, 0x41, 0, 1);
 841
 842         if (ifp->if_flags & IFF_UP) {
 843                 ifp->if_init(ifp->if_softc);
 844                 if (ifp->if_flags & IFF_RUNNING)
 845                         ifp->if_start(ifp);
 846         }
 847
 848         IWI_UNLOCK(sc);
 849
 850         return 0;
 851 }
 852
 853 static int
 854 iwi_media_change(struct ifnet *ifp)
 855 {
 856         struct iwi_softc *sc = ifp->if_softc;
 857         int error = 0;
 858         IWI_LOCK_INFO;
 859
 860         IWI_LOCK(sc);
 861
 862         error = ieee80211_media_change(ifp);
 863         if (error != ENETRESET) {
 864                 IWI_UNLOCK(sc);
 865                 return error;
 866         }
 867         error = 0; /* clear ENETRESET */
 868
 869         if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)){
 870                 iwi_init(sc);
 871                 error = tsleep( IWI_FW_CMD_ACKED(sc), 0, "iwirun", hz );
 872         }
 873
 874
 875         IWI_UNLOCK(sc);
 876
 877         return error;
 878 }
 879
 880 static void
 881 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 882 {
 883         struct iwi_softc *sc = ifp->if_softc;
 884         struct ieee80211com *ic = &sc->sc_ic;
 885 #define N(a)    (sizeof (a) / sizeof (a[0]))
 886         static const struct {
 887                 u_int32_t       val;
 888                 int             rate;
 889         } rates[] = {
 890                 { IWI_RATE_DS1,      2 },
 891                 { IWI_RATE_DS2,      4 },
 892                 { IWI_RATE_DS5,     11 },
 893                 { IWI_RATE_DS11,    22 },
 894                 { IWI_RATE_OFDM6,   12 },
 895                 { IWI_RATE_OFDM9,   18 },
 896                 { IWI_RATE_OFDM12,  24 },
 897                 { IWI_RATE_OFDM18,  36 },
 898                 { IWI_RATE_OFDM24,  48 },
 899                 { IWI_RATE_OFDM36,  72 },
 900                 { IWI_RATE_OFDM48,  96 },
 901                 { IWI_RATE_OFDM54, 108 },
 902         };
 903         u_int32_t val, i;
 904         int rate;
 905
 906         imr->ifm_status = IFM_AVALID;
 907         imr->ifm_active = IFM_IEEE80211;
 908         if (ic->ic_state == IEEE80211_S_RUN)
 909                 imr->ifm_status |= IFM_ACTIVE;
 910
 911         /* read current transmission rate from adapter */
 912         val = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE);
 913
 914         /* convert rate to 802.11 rate */
 915         for (i = 0; i < N(rates) && rates[i].val != val ; i++);
 916         rate = (i < N(rates)) ? rates[i].rate : 0;
 917
 918         imr->ifm_active |= ieee80211_rate2media(ic, rate, ic->ic_curmode);
 919         switch (ic->ic_opmode) {
 920         case IEEE80211_M_STA:
 921                 break;
 922
 923         case IEEE80211_M_IBSS:
 924                 imr->ifm_active |= IFM_IEEE80211_ADHOC;
 925                 break;
 926
 927         case IEEE80211_M_MONITOR:
 928                 imr->ifm_active |= IFM_IEEE80211_MONITOR;
 929                 break;
 930
 931         case IEEE80211_M_AHDEMO:
 932         case IEEE80211_M_HOSTAP:
 933                 /* should not get there */
 934                 break;
 935         }
 936 #undef N
 937 }
 938
 939 static int
 940 iwi_disassociate( struct iwi_softc *sc  )
 941 {
 942         sc->assoc.type = 2; /* DISASSOCIATE */
 943         return iwi_cmd(sc, IWI_CMD_ASSOCIATE, &sc->assoc, sizeof sc->assoc, 0);
 944 }
 945
 946
 947 static int
 948 iwi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg __unused)
 949 {
 950         struct iwi_softc *sc = ic->ic_softc;
 951
 952         switch (nstate) {
 953         case IEEE80211_S_SCAN:
 954                 if ( sc->flags & IWI_FLAG_ASSOCIATED ) {
 955                         sc->flags &= ~( IWI_FLAG_ASSOCIATED );
 956                         iwi_disassociate(sc);
 957                         (void) tsleep( IWI_FW_DEASSOCIATED(sc),
 958                                         0, "iwisca", hz );
 959
 960                 }
 961                 if ( !(sc->flags & IWI_FLAG_SCANNING) &&
 962                      !(sc->flags & IWI_FLAG_RF_DISABLED) ) {
 963                         iwi_scan(sc);
 964                 }
 965                 break;
 966
 967         case IEEE80211_S_AUTH:
 968                 if ( sc->flags & IWI_FLAG_ASSOCIATED ) {
 969                         sc->flags &= ~( IWI_FLAG_ASSOCIATED );
 970                         iwi_disassociate(sc);
 971                         (void) tsleep( IWI_FW_DEASSOCIATED(sc), 0,
 972                                        "iwiaut", hz );
 973
 974                 }
 975                 if ( iwi_auth_and_assoc(sc) != 0 )
 976                         ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
 977                 break;
 978
 979         case IEEE80211_S_RUN:
 980                 if (sc->flags & IWI_FLAG_SCAN_COMPLETE) {
 981                         sc->flags &= ~(IWI_FLAG_SCAN_COMPLETE);
 982                         if (ic->ic_opmode == IEEE80211_M_IBSS ||
 983                             ic->ic_opmode == IEEE80211_M_MONITOR ) {
 984                                 /*
 985                                  * In IBSS mode, following an end_scan
 986                                  * the ieee80211 stack state machine transitions
 987                                  * straight to 'run' state. This is out of
 988                                  * step with the firmware which requires
 989                                  * an association first. Flip our state from
 990                                  * RUN back to AUTH to allow us to tell the
 991                                  * firmware to associate.
 992                                  */
 993                                 ieee80211_new_state(ic, IEEE80211_S_AUTH, -1);
 994                         }
 995                 }
 996                 break;
 997
 998         case IEEE80211_S_ASSOC:
 999                 break;
1000         case IEEE80211_S_INIT:
1001                 sc->flags &= ~( IWI_FLAG_SCANNING | IWI_FLAG_ASSOCIATED );
1002                 break;
1003         }
1004
1005         ic->ic_state = nstate;
1006         return 0;
1007 }
1008
1009 /*
1010  * Read 16 bits at address 'addr' from the serial EEPROM.
1011  * DON'T PLAY WITH THIS CODE UNLESS YOU KNOW *EXACTLY* WHAT YOU'RE DOING!
1012  */
1013 static u_int16_t
1014 iwi_read_prom_word(struct iwi_softc *sc, u_int8_t addr)
1015 {
1016         u_int32_t tmp;
1017         u_int16_t val;
1018         int n;
1019
1020         /* Clock C once before the first command */
1021         IWI_EEPROM_CTL(sc, 0);
1022         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1023         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1024         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1025
1026         /* Write start bit (1) */
1027         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1028         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1029
1030         /* Write READ opcode (10) */
1031         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1032         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1033         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1034         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1035
1036         /* Write address A7-A0 */
1037         for (n = 7; n >= 0; n--) {
1038                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1039                     (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D));
1040                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1041                     (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C);
1042         }
1043
1044         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1045
1046         /* Read data Q15-Q0 */
1047         val = 0;
1048         for (n = 15; n >= 0; n--) {
1049                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1050                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1051                 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL);
1052                 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n;
1053         }
1054
1055         IWI_EEPROM_CTL(sc, 0);
1056
1057         /* Clear Chip Select and clock C */
1058         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1059         IWI_EEPROM_CTL(sc, 0);
1060         IWI_EEPROM_CTL(sc, IWI_EEPROM_C);
1061
1062         return be16toh(val);
1063 }
1064
1065 /*
1066  * XXX: Hack to set the current channel to the value advertised in beacons or
1067  * probe responses. Only used during AP detection.
1068  */
1069 static void
1070 iwi_fix_channel(struct iwi_softc *sc, struct mbuf *m)
1071 {
1072         struct ieee80211com *ic = &sc->sc_ic;
1073         struct ieee80211_frame *wh;
1074         u_int8_t subtype;
1075         u_int8_t *frm, *efrm;
1076
1077         wh = mtod(m, struct ieee80211_frame *);
1078
1079         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
1080                 return;
1081
1082         subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1083
1084         if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1085             subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1086                 return;
1087
1088         /*
1089          * Cache station entries from beacons and probes.
1090          */
1091         if ( iwi_find_station(sc, wh->i_addr2) == 0xff )
1092                 iwi_cache_station(sc, wh->i_addr2);
1093
1094         frm = (u_int8_t *)(wh + 1);
1095         efrm = mtod(m, u_int8_t *) + m->m_len;
1096
1097         frm += 12;      /* skip tstamp, bintval and capinfo fields */
1098 #if 0
1099         { /* XXX - debugging code */
1100                 u_int8_t *ptr;
1101                 u_int32_t cnt;
1102                 printf("Frame -->");
1103                 for ( ptr = frm, cnt = 0 ; ptr < efrm ; ptr++, cnt++ ) {
1104                         if ( cnt % 8 == 0 )
1105                                 printf("\n");
1106                         printf("0x%-2.2x ", *ptr);
1107                 }
1108                 printf("<-- End Frame\n");
1109         }
1110 #endif
1111
1112         while (frm < efrm) {
1113                 if (*frm == IEEE80211_ELEMID_DSPARMS)
1114 #if IEEE80211_CHAN_MAX < 255
1115                 if (frm[2] <= IEEE80211_CHAN_MAX)
1116 #endif
1117                         ic->ic_bss->ni_chan = &ic->ic_channels[frm[2]];
1118
1119                 frm += frm[1] + 2; /* advance to the next tag */
1120         }
1121 }
1122
1123 static void
1124 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_buf *buf, int i,
1125     struct iwi_frame *frame)
1126 {
1127         struct ieee80211com *ic = &sc->sc_ic;
1128         struct ifnet *ifp = &ic->ic_if;
1129         struct mbuf *m;
1130         struct ieee80211_frame *wh;
1131         struct ieee80211_node *ni;
1132         int error;
1133
1134         DPRINTFN(5, ("RX!DATA!%u!%u!%u\n", le16toh(frame->len), frame->chan,
1135             frame->rssi_dbm));
1136
1137         if (le16toh(frame->len) < sizeof (struct ieee80211_frame_min) ||
1138             le16toh(frame->len) > MCLBYTES) {
1139                 device_printf(sc->sc_dev, "bad frame length\n");
1140                 return;
1141         }
1142
1143         bus_dmamap_unload(sc->rx_buf_dmat, buf->map);
1144
1145         /* Finalize mbuf */
1146         m = buf->m;
1147         m->m_pkthdr.rcvif = ifp;
1148         m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) +
1149             sizeof (struct iwi_frame) + le16toh(frame->len);
1150
1151         m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame));
1152
1153         wh = mtod(m, struct ieee80211_frame *);
1154         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1155                 /*
1156                  * Hardware decrypts the frame itself but leaves the WEP bit
1157                  * set in the 802.11 header and don't remove the iv and crc
1158                  * fields
1159                  */
1160                 wh->i_fc[1] &= ~IEEE80211_FC1_WEP;
1161                 bcopy(wh, (char *)wh + IEEE80211_WEP_IVLEN +
1162                     IEEE80211_WEP_KIDLEN, sizeof (struct ieee80211_frame));
1163                 m_adj(m, IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN);
1164                 m_adj(m, -IEEE80211_WEP_CRCLEN);
1165                 wh = mtod(m, struct ieee80211_frame *);
1166         }
1167
1168         if (sc->sc_drvbpf != NULL) {
1169                 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap;
1170
1171                 tap->wr_flags = 0;
1172                 tap->wr_rate = frame->rate;
1173                 tap->wr_chan_freq =
1174                     htole16(ic->ic_channels[frame->chan].ic_freq);
1175                 tap->wr_chan_flags =
1176                     htole16(ic->ic_channels[frame->chan].ic_flags);
1177                 tap->wr_antsignal = frame->signal;
1178                 tap->wr_antnoise = frame->noise;
1179                 tap->wr_antenna = frame->antenna;
1180
1181                 bpf_ptap(sc->sc_drvbpf, m, tap, sc->sc_rxtap_len);
1182         }
1183
1184         if (ic->ic_state == IEEE80211_S_SCAN)
1185                 iwi_fix_channel(sc, m);
1186
1187         if (ic->ic_opmode != IEEE80211_M_STA) {
1188                 ni = ieee80211_find_node(ic, wh->i_addr2);
1189                 if (ni == NULL)
1190                         ni = ieee80211_ref_node(ic->ic_bss);
1191         } else
1192                 ni = ieee80211_ref_node(ic->ic_bss);
1193
1194         /* Send the frame to the upper layer */
1195         ieee80211_input(ifp, m, ni, IWI_RSSIDBM2RAW(frame->rssi_dbm), 0);
1196
1197         if (ni == ic->ic_bss)
1198                 ieee80211_unref_node(&ni);
1199         else
1200                 ieee80211_free_node(ic, ni);
1201
1202         buf->m = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
1203         if (buf->m == NULL) {
1204                 device_printf(sc->sc_dev, "could not allocate rx mbuf\n");
1205                 return;
1206         }
1207
1208         error = bus_dmamap_load(sc->rx_buf_dmat, buf->map, mtod(buf->m, void *),
1209             MCLBYTES, iwi_dma_map_addr, &buf->physaddr, 0);
1210         if (error != 0) {
1211                 device_printf(sc->sc_dev, "could not load rx buf DMA map\n");
1212                 m_freem(buf->m);
1213                 buf->m = NULL;
1214                 return;
1215         }
1216
1217         CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, buf->physaddr);
1218 }
1219
1220 static void
1221 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif)
1222 {
1223         struct ieee80211com *ic = &sc->sc_ic;
1224         struct ifnet *ifp = &ic->ic_if;
1225         struct iwi_notif_scan_channel *chan;
1226         struct iwi_notif_scan_complete *scan;
1227         struct iwi_notif_authentication *auth;
1228         struct iwi_notif_association *assoc;
1229
1230         switch (notif->type) {
1231         case IWI_NOTIF_TYPE_SCAN_CHANNEL:
1232                 chan = (struct iwi_notif_scan_channel *)(notif + 1);
1233
1234                 DPRINTFN(2, ("Scan channel (%u)\n", chan->nchan));
1235                 break;
1236
1237         case IWI_NOTIF_TYPE_SCAN_COMPLETE:
1238                 scan = (struct iwi_notif_scan_complete *)(notif + 1);
1239
1240                 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan,
1241                     scan->status));
1242
1243                 sc->flags &= ~(IWI_FLAG_SCANNING);
1244                 sc->flags |= IWI_FLAG_SCAN_COMPLETE;
1245
1246                 if ( sc->flags & IWI_FLAG_SCAN_ABORT ) {
1247                         sc->flags &= ~(IWI_FLAG_SCAN_ABORT);
1248                         wakeup(IWI_FW_SCAN_COMPLETED(sc));
1249                 } else {
1250                         ieee80211_end_scan(ifp);
1251                         wakeup(IWI_FW_SCAN_COMPLETED(sc));
1252                 }
1253                 break;
1254
1255         case IWI_NOTIF_TYPE_AUTHENTICATION:
1256                 auth = (struct iwi_notif_authentication *)(notif + 1);
1257
1258                 DPRINTFN(2, ("Authentication (%u)\n", auth->state));
1259
1260                 switch (auth->state) {
1261                 case IWI_AUTHENTICATED:
1262                         ieee80211_new_state(ic, IEEE80211_S_ASSOC, -1);
1263                         break;
1264
1265                 case IWI_DEAUTHENTICATED:
1266                         ieee80211_begin_scan(ifp);/* not necessary */
1267                         break;
1268
1269                 default:
1270                         device_printf(sc->sc_dev,
1271                             "unknown authentication state %u\n", auth->state);
1272                 }
1273                 break;
1274
1275         case IWI_NOTIF_TYPE_ASSOCIATION:
1276                 assoc = (struct iwi_notif_association *)(notif + 1);
1277
1278                 DPRINTFN(2, ("Association (%u, %u)\n", assoc->state,
1279                     assoc->status));
1280
1281                 switch (assoc->state) {
1282                 case IWI_ASSOCIATED:
1283                         sc->flags |= IWI_FLAG_ASSOCIATED;
1284                         ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
1285                         break;
1286
1287                 case IWI_DEASSOCIATED:
1288                         sc->flags &= ~(IWI_FLAG_ASSOCIATED);
1289                         wakeup(IWI_FW_DEASSOCIATED(sc));
1290                         ieee80211_begin_scan(ifp);/* probably not necessary */
1291                         break;
1292
1293                 default:
1294                         device_printf(sc->sc_dev,
1295                             "unknown association state %u\n", assoc->state);
1296                 }
1297                 break;
1298
1299         case IWI_NOTIF_TYPE_CALIBRATION:
1300                 DPRINTFN(5, ("Notification calib (%u)\n", notif->type));
1301                 break;
1302         case IWI_NOTIF_TYPE_BEACON:
1303                 DPRINTFN(5, ("Notification beacon (%u)\n", notif->type));
1304                 break;
1305         case IWI_NOTIF_TYPE_NOISE:
1306                 DPRINTFN(5, ("Notification noise (%u)\n", notif->type));
1307                 break;
1308
1309         default:
1310                 device_printf(sc->sc_dev, "unknown notification type %u\n",
1311                     notif->type);
1312         }
1313 }
1314
1315 static void
1316 iwi_rx_intr(struct iwi_softc *sc)
1317 {
1318         struct iwi_rx_buf *buf;
1319         struct iwi_hdr *hdr;
1320         u_int32_t r, i;
1321
1322         r = CSR_READ_4(sc, IWI_CSR_RX_READ_INDEX);
1323
1324         for (i = (sc->rx_cur + 1) % IWI_RX_RING_SIZE; i != r;
1325              i = (i + 1) % IWI_RX_RING_SIZE) {
1326
1327                 buf = &sc->rx_buf[i];
1328
1329                 bus_dmamap_sync(sc->rx_buf_dmat, buf->map,
1330                     BUS_DMASYNC_POSTREAD);
1331
1332                 hdr = mtod(buf->m, struct iwi_hdr *);
1333
1334                 switch (hdr->type) {
1335                 case IWI_HDR_TYPE_FRAME:
1336                         iwi_frame_intr(sc, buf, i,
1337                             (struct iwi_frame *)(hdr + 1));
1338                         break;
1339
1340                 case IWI_HDR_TYPE_NOTIF:
1341                         iwi_notification_intr(sc,
1342                             (struct iwi_notif *)(hdr + 1));
1343                         break;
1344
1345                 default:
1346                         device_printf(sc->sc_dev, "unknown hdr type %u\n",
1347                             hdr->type);
1348                 }
1349         }
1350
1351         /* Tell the firmware what we have processed */
1352         sc->rx_cur = (r == 0) ? IWI_RX_RING_SIZE - 1 : r - 1;
1353         CSR_WRITE_4(sc, IWI_CSR_RX_WRITE_INDEX, sc->rx_cur);
1354 }
1355
1356 static void
1357 iwi_tx_intr(struct iwi_softc *sc)
1358 {
1359         struct ieee80211com *ic = &sc->sc_ic;
1360         struct ifnet *ifp = &ic->ic_if;
1361         struct iwi_tx_buf *buf;
1362         u_int32_t r, i;
1363
1364         r = CSR_READ_4(sc, IWI_CSR_TX1_READ_INDEX);
1365 #if  notyet
1366         bus_dmamap_sync(sc->tx_ring_dmat, sc->tx_ring_map, BUS_DMASYNC_POSTWRITE);
1367 #endif
1368
1369         for (i = (sc->tx_old + 1) % IWI_TX_RING_SIZE; i != r;
1370              i = (i + 1) % IWI_TX_RING_SIZE) {
1371
1372                 buf = &sc->tx_buf[i];
1373
1374                 bus_dmamap_sync(sc->tx_buf_dmat, buf->map,
1375                     BUS_DMASYNC_POSTWRITE);
1376                 bus_dmamap_unload(sc->tx_buf_dmat, buf->map);
1377                 m_freem(buf->m);
1378                 buf->m = NULL;
1379                 if (buf->ni != ic->ic_bss)
1380                         ieee80211_free_node(ic, buf->ni);
1381                 buf->ni = NULL;
1382
1383                 sc->tx_queued--;
1384
1385                 /* kill watchdog timer */
1386                 sc->sc_tx_timer = 0;
1387         }
1388
1389         /* Remember what the firmware has processed */
1390         sc->tx_old = (r == 0) ? IWI_TX_RING_SIZE - 1 : r - 1;
1391
1392         /* Call start() since some buffer descriptors have been released */
1393         ifp->if_flags &= ~IFF_OACTIVE;
1394         (*ifp->if_start)(ifp);
1395 }
1396
1397 static void
1398 iwi_intr(void *arg)
1399 {
1400         struct iwi_softc *sc = arg;
1401         struct ieee80211com *ic = &sc->sc_ic;
1402         struct ifnet *ifp = &ic->ic_if;
1403         u_int32_t r;
1404         IWI_LOCK_INFO;
1405         IWI_IPLLOCK_INFO;
1406
1407         IWI_IPLLOCK(sc);
1408
1409         if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) {
1410                 IWI_IPLUNLOCK(sc);
1411                 return;
1412         }
1413
1414         /* Disable interrupts */
1415         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0);
1416
1417         DPRINTFN(8, ("INTR!0x%08x\n", r));
1418
1419         sc->flags &= ~(IWI_FLAG_RF_DISABLED);
1420
1421         if ( r & IWI_INTR_FATAL_ERROR ) {
1422                 if ( !(sc->flags & (IWI_FLAG_RESET | IWI_FLAG_EXIT))) {
1423                         sc->flags |= IWI_FLAG_RESET;
1424                         wakeup(IWI_FW_WAKE_MONITOR(sc));
1425                 }
1426         }
1427
1428         if (r & IWI_INTR_PARITY_ERROR) {
1429                         device_printf(sc->sc_dev, "fatal error\n");
1430                         sc->sc_ic.ic_if.if_flags &= ~IFF_UP;
1431                         IWI_LOCK(sc);
1432                         iwi_stop(sc);
1433                         IWI_UNLOCK(sc);
1434         }
1435
1436         if (r & IWI_INTR_FW_INITED) {
1437                 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR)))
1438                         wakeup(IWI_FW_INITIALIZED(sc));
1439         }
1440
1441         if (r & IWI_INTR_RADIO_OFF) {
1442                 DPRINTF(("radio transmitter off\n"));
1443                 sc->sc_ic.ic_if.if_flags &= ~IFF_UP;
1444                 IWI_LOCK(sc);
1445                 iwi_stop(sc);
1446                 IWI_UNLOCK(sc);
1447                 sc->flags |= IWI_FLAG_RF_DISABLED;
1448         }
1449
1450         if (r & IWI_INTR_RX_TRANSFER)
1451                 iwi_rx_intr(sc);
1452
1453         if (r & IWI_INTR_CMD_TRANSFER)
1454                 wakeup(IWI_FW_CMD_ACKED(sc));
1455
1456         if (r & IWI_INTR_TX1_TRANSFER)
1457                 iwi_tx_intr(sc);
1458
1459         if (r & ~(IWI_HANDLED_INTR_MASK))
1460                 device_printf(sc->sc_dev,
1461                               "unhandled interrupt(s) INTR!0x%08x\n",
1462                               r & ~(IWI_HANDLED_INTR_MASK));
1463
1464         /* Acknowledge interrupts */
1465         CSR_WRITE_4(sc, IWI_CSR_INTR, r);
1466
1467         /* Re-enable interrupts */
1468         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK);
1469
1470         IWI_IPLUNLOCK(sc);
1471
1472         if ((ifp->if_flags & IFF_RUNNING) && !ifq_is_empty(&ifp->if_snd))
1473                 iwi_start(ifp);
1474 }
1475
1476 struct iwi_dma_mapping {
1477         bus_dma_segment_t segs[IWI_MAX_NSEG];
1478         int nseg;
1479         bus_size_t mapsize;
1480 };
1481
1482 static void
1483 iwi_dma_map_buf(void *arg, bus_dma_segment_t *segs, int nseg,
1484     bus_size_t mapsize, int error)
1485 {
1486         struct iwi_dma_mapping *map = arg;
1487
1488         if (error != 0)
1489                 return;
1490
1491         KASSERT(nseg <= IWI_MAX_NSEG, ("too many DMA segments %d", nseg));
1492
1493         bcopy(segs, map->segs, nseg * sizeof (bus_dma_segment_t));
1494         map->nseg = nseg;
1495         map->mapsize = mapsize;
1496 }
1497
1498 static void
1499 iwi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg __unused, int error)
1500 {
1501         if (error != 0) {
1502                 printf("iwi: fatal DMA mapping error !!!\n");
1503                 return;
1504         }
1505
1506         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1507
1508         *(bus_addr_t *)arg = segs[0].ds_addr;
1509 }
1510
1511 static int
1512 iwi_cmd(struct iwi_softc *sc, u_int8_t type, void *data, u_int8_t len,
1513     int async)
1514 {
1515         struct iwi_cmd_desc *desc;
1516
1517         DPRINTFN(2, ("TX!CMD!%u!%u\n", type, len));
1518
1519         desc = &sc->cmd_desc[sc->cmd_cur];
1520         desc->hdr.type = IWI_HDR_TYPE_COMMAND;
1521         desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1522         desc->type = type;
1523         desc->len = len;
1524         bcopy(data, desc->data, len);
1525
1526         bus_dmamap_sync(sc->cmd_ring_dmat, sc->cmd_ring_map,
1527             BUS_DMASYNC_PREWRITE);
1528
1529         sc->cmd_cur = (sc->cmd_cur + 1) % IWI_CMD_RING_SIZE;
1530         CSR_WRITE_4(sc, IWI_CSR_CMD_WRITE_INDEX, sc->cmd_cur);
1531
1532         return async ? 0 : tsleep( IWI_FW_CMD_ACKED(sc), 0, "iwicmd", hz);
1533 }
1534
1535 static int
1536 iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni)
1537 {
1538         struct iwi_softc *sc = ifp->if_softc;
1539         struct ieee80211com *ic = &sc->sc_ic;
1540         struct ieee80211_frame *wh;
1541         struct iwi_tx_buf *buf;
1542         struct iwi_tx_desc *desc;
1543         struct iwi_dma_mapping map;
1544         struct mbuf *mnew;
1545         u_int32_t id = 0;
1546         int error, i;
1547         IWI_IPLLOCK_INFO; /* XXX still need old ipl locking mech. here */
1548         IWI_IPLLOCK(sc);
1549
1550         if (sc->sc_drvbpf != NULL) {
1551                 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap;
1552
1553                 tap->wt_flags = 0;
1554                 tap->wt_chan_freq = htole16(ic->ic_bss->ni_chan->ic_freq);
1555                 tap->wt_chan_flags = htole16(ic->ic_bss->ni_chan->ic_flags);
1556
1557                 bpf_ptap(sc->sc_drvbpf, m0, tap, sc->sc_txtap_len);
1558         }
1559
1560         buf = &sc->tx_buf[sc->tx_cur];
1561         desc = &sc->tx_desc[sc->tx_cur];
1562
1563         wh = mtod(m0, struct ieee80211_frame *);
1564
1565         if ( (id = iwi_find_station( sc, wh->i_addr1 ) ) == 0xff )
1566                 id = iwi_cache_station( sc, wh->i_addr1 );
1567
1568         bzero( desc, sizeof (struct iwi_tx_desc) );
1569         desc->station_number = id;
1570
1571         /* trim IEEE802.11 header */
1572         m_adj(m0, sizeof (struct ieee80211_frame));
1573
1574         error = bus_dmamap_load_mbuf(sc->tx_buf_dmat, buf->map, m0,
1575             iwi_dma_map_buf, &map, BUS_DMA_NOWAIT);
1576         if (error != 0 && error != EFBIG) {
1577                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1578                     error);
1579                 m_freem(m0);
1580                 IWI_IPLUNLOCK(sc);
1581                 return error;
1582         }
1583         if (error != 0) {
1584                 mnew = m_defrag(m0, MB_DONTWAIT);
1585                 if (mnew == NULL) {
1586                         device_printf(sc->sc_dev,
1587                             "could not defragment mbuf\n");
1588                         m_freem(m0);
1589                         IWI_IPLUNLOCK(sc);
1590                         return ENOBUFS;
1591                 }
1592                 m0 = mnew;
1593
1594                 error = bus_dmamap_load_mbuf(sc->tx_buf_dmat, buf->map, m0,
1595                     iwi_dma_map_buf, &map, BUS_DMA_NOWAIT);
1596                 if (error != 0) {
1597                         device_printf(sc->sc_dev,
1598                             "could not map mbuf (error %d)\n", error);
1599                         m_freem(m0);
1600                         IWI_IPLUNLOCK(sc);
1601                         return error;
1602                 }
1603         }
1604
1605         buf->m = m0;
1606         buf->ni = ni;
1607
1608         desc->hdr.type = IWI_HDR_TYPE_DATA;
1609         desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1610         desc->cmd = IWI_DATA_CMD_TX;
1611         desc->len = htole16(m0->m_pkthdr.len);
1612         desc->flags = 0;
1613         if (ic->ic_opmode == IEEE80211_M_IBSS) {
1614                 if (!IEEE80211_IS_MULTICAST(wh->i_addr1))
1615                         desc->flags |= IWI_DATA_FLAG_NEED_ACK;
1616         } else if (!IEEE80211_IS_MULTICAST(wh->i_addr3))
1617                 desc->flags |= IWI_DATA_FLAG_NEED_ACK;
1618
1619         if (ic->ic_flags & IEEE80211_F_WEPON) {
1620                 wh->i_fc[1] |= IEEE80211_FC1_WEP;
1621                 desc->wep_txkey = ic->ic_wep_txkey;
1622         } else
1623                 desc->flags |= IWI_DATA_FLAG_NO_WEP;
1624
1625         if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
1626                 desc->flags |= IWI_DATA_FLAG_SHPREAMBLE;
1627
1628         bcopy(wh, &desc->wh, sizeof (struct ieee80211_frame));
1629         desc->nseg = htole32(map.nseg);
1630         for (i = 0; i < map.nseg; i++) {
1631                 desc->seg_addr[i] = htole32(map.segs[i].ds_addr);
1632                 desc->seg_len[i]  = htole32(map.segs[i].ds_len);
1633         }
1634
1635         bus_dmamap_sync(sc->tx_buf_dmat, buf->map, BUS_DMASYNC_PREWRITE);
1636         bus_dmamap_sync(sc->tx_ring_dmat, sc->tx_ring_map,
1637             BUS_DMASYNC_PREWRITE);
1638
1639         DPRINTFN(5, ("TX!DATA!%u!%u\n", desc->len, desc->nseg));
1640
1641         /* Inform firmware about this new packet */
1642         sc->tx_queued++;
1643         sc->tx_cur = (sc->tx_cur + 1) % IWI_TX_RING_SIZE;
1644         CSR_WRITE_4(sc, IWI_CSR_TX1_WRITE_INDEX, sc->tx_cur);
1645
1646         IWI_IPLUNLOCK(sc);
1647         return 0;
1648 }
1649
1650 static void
1651 iwi_start(struct ifnet *ifp)
1652 {
1653         struct iwi_softc *sc = ifp->if_softc;
1654         struct ieee80211com *ic = &sc->sc_ic;
1655         struct mbuf *m0;
1656         struct ieee80211_node *ni;
1657
1658         if (ic->ic_state != IEEE80211_S_RUN) {
1659                 return;
1660         }
1661
1662         for (;;) {
1663                 m0 = ifq_poll(&ifp->if_snd);
1664                 if (m0 == NULL)
1665                         break;
1666
1667                 if (sc->tx_queued >= IWI_TX_RING_SIZE - 4) {
1668                         ifp->if_flags |= IFF_OACTIVE;
1669                         break;
1670                 }
1671
1672                 m0 = ifq_dequeue(&ifp->if_snd);
1673
1674 #if NBPFILTER > 0
1675                 BPF_MTAP(ifp, m0);
1676 #endif
1677
1678                 m0 = ieee80211_encap(ifp, m0, &ni);
1679                 if (m0 == NULL)
1680                         continue;
1681
1682                 if (ic->ic_rawbpf != NULL)
1683                         bpf_mtap(ic->ic_rawbpf, m0);
1684
1685                 if (iwi_tx_start(ifp, m0, ni) != 0) {
1686                         if (ni != NULL && ni != ic->ic_bss)
1687                                 ieee80211_free_node(ic, ni);
1688                         break;
1689                 }
1690
1691                 /* start watchdog timer */
1692                 sc->sc_tx_timer = 5;
1693                 ifp->if_timer = 1;
1694         }
1695
1696 }
1697
1698 static void
1699 iwi_watchdog(struct ifnet *ifp)
1700 {
1701         struct iwi_softc *sc = ifp->if_softc;
1702
1703         ifp->if_timer = 0;
1704
1705         if (sc->sc_tx_timer > 0) {
1706                 if (--sc->sc_tx_timer == 0) {
1707                         if_printf(ifp, "device timeout\n");
1708                         wakeup(IWI_FW_WAKE_MONITOR(sc));
1709                         return;
1710                 }
1711                 ifp->if_timer = 1;
1712         }
1713
1714         ieee80211_watchdog(ifp);
1715 }
1716
1717
1718 static int
1719 iwi_wi_ioctl_get(struct ifnet *ifp, caddr_t data)
1720 {
1721         struct wi_req           wreq;
1722         struct ifreq            *ifr;
1723         struct iwi_softc        *sc;
1724         int                     error;
1725
1726         sc = ifp->if_softc;
1727         ifr = (struct ifreq *)data;
1728         error = copyin(ifr->ifr_data, &wreq, sizeof(wreq));
1729         if (error)
1730                 return (error);
1731
1732         switch (wreq.wi_type) {
1733         case WI_RID_READ_APS:
1734                 ieee80211_begin_scan(ifp);
1735                 (void) tsleep(IWI_FW_SCAN_COMPLETED(sc),
1736                         PPAUSE|PCATCH, "ssidscan", hz * 2);
1737                 ieee80211_end_scan(ifp);
1738                 break;
1739         default:
1740                 error = ENOTTY;
1741                 break;
1742         }
1743         return (error);
1744 }
1745
1746
1747
1748
1749 static int
1750 iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
1751 {
1752         struct iwi_softc *sc = ifp->if_softc;
1753         struct ifreq *ifr;
1754         struct ieee80211req *ireq;
1755         struct ifaddr *ifa;
1756         int error = 0;
1757         IWI_LOCK_INFO;
1758
1759         IWI_LOCK(sc);
1760
1761         switch (cmd) {
1762        case SIOCSIFADDR:
1763                 /*
1764                  * Handle this here instead of in net80211_ioctl.c
1765                  * so that we can lock (IWI_LOCK) the call to
1766                  * iwi_init().
1767                  */
1768                 ifa = (struct ifaddr *) data;
1769                 switch (ifa->ifa_addr->sa_family) {
1770 #ifdef INET
1771                 case AF_INET:
1772                         if ((ifp->if_flags & IFF_UP) == 0) {
1773                                 ifp->if_flags |= IFF_UP;
1774                                 ifp->if_init(ifp->if_softc);
1775                         }
1776                         arp_ifinit(ifp, ifa);
1777                         break;
1778 #endif
1779 #ifdef IPX
1780 #warning "IPX support has not been tested"
1781                 /*
1782                  * XXX - This code is probably wrong,
1783                  *       but has been copied many times.
1784                  */
1785                 case AF_IPX: {
1786                         struct ipx_addr *ina = &(IA_SIPX(ifa)->sipx_addr);
1787                         struct arpcom *ac = (struct arpcom *)ifp;
1788
1789                         if (ipx_nullhost(*ina))
1790                                 ina->x_host = *(union ipx_host *) ac->ac_enaddr;
1791                         else
1792                                 bcopy((caddr_t) ina->x_host.c_host,
1793                                       (caddr_t) ac->ac_enaddr,
1794                                       sizeof(ac->ac_enaddr));
1795                         /* fall thru... */
1796                 }
1797 #endif
1798                 default:
1799                         if ((ifp->if_flags & IFF_UP) == 0) {
1800                                 ifp->if_flags |= IFF_UP;
1801                                 ifp->if_init(ifp->if_softc);
1802                         }
1803                         break;
1804                 }
1805                 break;
1806
1807         case SIOCSIFFLAGS:
1808                 if (ifp->if_flags & IFF_UP) {
1809                         if (!(ifp->if_flags & IFF_RUNNING)) {
1810                                 iwi_init(sc);
1811                                 error = tsleep(IWI_FW_CMD_ACKED(sc), 0,
1812                                                  "iwirun", hz);
1813                         }
1814                 } else {
1815                         if (ifp->if_flags & IFF_RUNNING) {
1816                                 iwi_stop(sc);
1817                         }
1818                 }
1819                 break;
1820
1821         case SIOCSLOADFW:
1822         case SIOCSLOADIBSSFW:
1823                 /* only super-user can do that! */
1824                 if ((error = suser(curthread)) != 0)
1825                         break;
1826
1827                 ifr = (struct ifreq *)data;
1828                 error = iwi_cache_firmware(sc, ifr->ifr_data,
1829                                 (cmd == SIOCSLOADIBSSFW) ? 1 : 0);
1830                 break;
1831
1832         case SIOCSKILLFW:
1833                 /* only super-user can do that! */
1834                 if ((error = suser(curthread)) != 0)
1835                         break;
1836
1837                 ifp->if_flags &= ~IFF_UP;
1838                 iwi_stop(sc);
1839                 iwi_free_firmware(sc);
1840                 break;
1841
1842         case SIOCG80211:
1843                 ireq = (struct ieee80211req *)data;
1844                 switch (ireq->i_type) {
1845                 case IEEE80211_IOC_AUTHMODE:
1846                         ireq->i_val = sc->authmode;
1847                         break;
1848
1849                 default:
1850                         error = ieee80211_ioctl(ifp, cmd, data, cr);
1851                 }
1852                 break;
1853
1854         case SIOCS80211:
1855                 /* only super-user can do that! */
1856                 if ((error = suser(curthread)) != 0)
1857                         break;
1858
1859                 ireq = (struct ieee80211req *)data;
1860                 switch (ireq->i_type) {
1861                 case IEEE80211_IOC_AUTHMODE:
1862                         sc->authmode = ireq->i_val;
1863                         break;
1864
1865                 default:
1866                         error = ieee80211_ioctl(ifp, cmd, data, cr);
1867                 }
1868                 break;
1869         case SIOCGIFGENERIC:
1870                 if (sc->flags & IWI_FLAG_FW_INITED) {
1871                         error = iwi_wi_ioctl_get(ifp, data);
1872                         if (! error)
1873                                 error = ieee80211_ioctl(ifp, cmd, data, cr);
1874                 } else
1875                         error = ENOTTY;
1876                 if (error != ENOTTY)
1877                         break;
1878
1879         default:
1880                 error = ieee80211_ioctl(ifp, cmd, data, cr);
1881         }
1882
1883         if (error == ENETRESET) {
1884                 error = 0;
1885                 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
1886                     (IFF_UP | IFF_RUNNING)) {
1887                         iwi_init(sc);
1888                         error = tsleep(IWI_FW_CMD_ACKED(sc), 0, "iwirun", hz);
1889                 }
1890         }
1891
1892         IWI_UNLOCK(sc);
1893
1894         return error;
1895 }
1896
1897 static int
1898 iwi_abort_scan( struct iwi_softc *sc  )
1899 {
1900         sc->flags |= IWI_FLAG_SCAN_ABORT;
1901         return iwi_cmd(sc, IWI_CMD_SCAN_ABORT, NULL, 0, 1);
1902 }
1903
1904 static void
1905 iwi_stop_master(struct iwi_softc *sc)
1906 {
1907         int ntries;
1908
1909         /*
1910          * If the master is busy scanning, we will occasionally
1911          * timeout waiting for it (the master) to stop. Make the
1912          * 'stopping' process more robust by ceasing all scans
1913          * prior to asking for the stop.
1914          */
1915         if ( ( sc->flags & IWI_FLAG_SCANNING ) &&
1916              !( sc->flags & IWI_FLAG_RF_DISABLED ) ) {
1917                 iwi_abort_scan(sc);
1918                 if (( sc->flags & IWI_FLAG_SCAN_ABORT ) &&
1919                     !( sc->flags & IWI_FLAG_RF_DISABLED )) {
1920                         (void) tsleep(IWI_FW_SCAN_COMPLETED(sc), 0,
1921                                          "iwiabr", hz);
1922                 }
1923         }
1924         /* Disable interrupts */
1925
1926         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0);
1927
1928         CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER);
1929         for (ntries = 0; ntries < 5; ntries++) {
1930                 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
1931                         break;
1932                 DELAY(10);
1933         }
1934         if (ntries == 5 && sc->debug_level > 0)
1935                 device_printf(sc->sc_dev, "timeout waiting for master\n");
1936
1937         CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) |
1938             IWI_RST_PRINCETON_RESET);
1939
1940         sc->flags &= ~IWI_FLAG_FW_INITED;
1941 }
1942
1943 static int
1944 iwi_reset(struct iwi_softc *sc)
1945 {
1946         int i, ntries;
1947
1948         iwi_stop_master(sc);
1949
1950         /* Move adapter to D0 state */
1951         CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) |
1952             IWI_CTL_INIT);
1953
1954         /* Initialize Phase-Locked Level  (PLL) */
1955         CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST);
1956
1957         /* Wait for clock stabilization */
1958         for (ntries = 0; ntries < 1000; ntries++) {
1959                 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY)
1960                         break;
1961                 DELAY(200);
1962         }
1963         if (ntries == 1000) {
1964                 return EIO;
1965         }
1966
1967         CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) |
1968             IWI_RST_SW_RESET);
1969
1970         DELAY(10);
1971
1972         CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) |
1973             IWI_CTL_INIT);
1974
1975
1976         /* Clear NIC memory */
1977         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0);
1978
1979         for (i = 0; i < 0xc000; i++) {
1980                 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
1981         }
1982
1983         sc->num_stations = 0;
1984         return 0;
1985 }
1986
1987 static int
1988 iwi_load_ucode(struct iwi_softc *sc, void *uc, int size)
1989 {
1990         u_int16_t *w;
1991         int ntries, i;
1992
1993         CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) |
1994             IWI_RST_STOP_MASTER);
1995         for (ntries = 0; ntries < 5; ntries++) {
1996                 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
1997                         break;
1998                 DELAY(10);
1999         }
2000         if (ntries == 5) {
2001                 device_printf(sc->sc_dev, "timeout waiting for master\n");
2002                 return EIO;
2003         }
2004
2005         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
2006         DELAY(5000);
2007         CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) &
2008             ~IWI_RST_PRINCETON_RESET);
2009         DELAY(5000);
2010         MEM_WRITE_4(sc, 0x3000e0, 0);
2011         DELAY(1000);
2012         MEM_WRITE_4(sc, 0x300004, 1);
2013         DELAY(1000);
2014         MEM_WRITE_4(sc, 0x300004, 0);
2015         DELAY(1000);
2016         MEM_WRITE_1(sc, 0x200000, 0x00);
2017         MEM_WRITE_1(sc, 0x200000, 0x40);
2018         DELAY(1000);
2019
2020         /* Adapter is buggy, we must set the address for each word */
2021         for (w = uc; size > 0; w++, size -= 2)
2022                 MEM_WRITE_2(sc, 0x200010, *w);
2023
2024         MEM_WRITE_1(sc, 0x200000, 0x00);
2025         MEM_WRITE_1(sc, 0x200000, 0x80);
2026
2027         /* Wait until we get a response in the uc queue */
2028         for (ntries = 0; ntries < 100; ntries++) {
2029                 if (MEM_READ_1(sc, 0x200000) & 1)
2030                         break;
2031                 DELAY(100);
2032         }
2033         if (ntries == 100) {
2034                 device_printf(sc->sc_dev,
2035                     "timeout waiting for ucode to initialize\n");
2036                 return EIO;
2037         }
2038
2039         /* Empty the uc queue or the firmware will not initialize properly */
2040         for (i = 0; i < 7; i++)
2041                 MEM_READ_4(sc, 0x200004);
2042
2043         MEM_WRITE_1(sc, 0x200000, 0x00);
2044
2045         return 0;
2046 }
2047
2048 /* macro to handle unaligned little endian data in firmware image */
2049 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2050 static int
2051 iwi_load_firmware(struct iwi_softc *sc, void *fw, int size)
2052 {
2053         bus_dma_tag_t dmat;
2054         bus_dmamap_t map;
2055         bus_addr_t physaddr;
2056         void *virtaddr;
2057         u_char *p, *end;
2058         u_int32_t sentinel, ctl, src, dst, sum, len, mlen;
2059         int ntries, error = 0;
2060
2061         sc->flags &= ~(IWI_FLAG_FW_INITED);
2062
2063         /* Allocate DMA memory for storing firmware image */
2064         error = bus_dma_tag_create(sc->iwi_parent_tag, 1, 0, BUS_SPACE_MAXADDR_32BIT,
2065             BUS_SPACE_MAXADDR, NULL, NULL, size, 1, size, BUS_DMA_ALLOCNOW, &dmat);
2066         if (error != 0) {
2067                 device_printf(sc->sc_dev,
2068                     "could not create firmware DMA tag\n");
2069                 goto fail1;
2070         }
2071
2072         /*
2073          * We cannot map fw directly because of some hardware constraints on
2074          * the mapping address.
2075          */
2076         error = bus_dmamem_alloc(dmat, &virtaddr, BUS_DMA_WAITOK, &map);
2077         if (error != 0) {
2078                 device_printf(sc->sc_dev,
2079                     "could not allocate firmware DMA memory\n");
2080                 goto fail2;
2081         }
2082
2083         error = bus_dmamap_load(dmat, map, virtaddr, size, iwi_dma_map_addr,
2084             &physaddr, 0);
2085         if (error != 0) {
2086                 device_printf(sc->sc_dev, "could not load firmware DMA map\n");
2087                 goto fail3;
2088         }
2089
2090         /* Copy firmware image to DMA memory */
2091         bcopy(fw, virtaddr, size);
2092
2093         /* Make sure the adapter will get up-to-date values */
2094         bus_dmamap_sync(dmat, map, BUS_DMASYNC_PREWRITE);
2095
2096         /* Tell the adapter where the command blocks are stored */
2097         MEM_WRITE_4(sc, 0x3000a0, 0x27000);
2098
2099         /*
2100          * Store command blocks into adapter's internal memory using register
2101          * indirections. The adapter will read the firmware image through DMA
2102          * using information stored in command blocks.
2103          */
2104         src = physaddr;
2105         p = virtaddr;
2106         end = p + size;
2107         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000);
2108
2109         while (p < end) {
2110                 dst = GETLE32(p); p += 4; src += 4;
2111                 len = GETLE32(p); p += 4; src += 4;
2112                 p += len;
2113
2114                 while (len > 0) {
2115                         mlen = min(len, IWI_CB_MAXDATALEN);
2116
2117                         ctl = IWI_CB_DEFAULT_CTL | mlen;
2118                         sum = ctl ^ src ^ dst;
2119
2120                         /* Write a command block */
2121                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl);
2122                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src);
2123                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst);
2124                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum);
2125
2126                         src += mlen;
2127                         dst += mlen;
2128                         len -= mlen;
2129                 }
2130         }
2131
2132         /* Write a fictive final command block (sentinel) */
2133         sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR);
2134         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2135
2136         CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) &
2137             ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER));
2138
2139         /* Tell the adapter to start processing command blocks */
2140         MEM_WRITE_4(sc, 0x3000a4, 0x540100);
2141
2142         /* Wait until the adapter has processed all command blocks */
2143         for (ntries = 0; ntries < 400; ntries++) {
2144                 if (MEM_READ_4(sc, 0x3000d0) >= sentinel)
2145                         break;
2146                 DELAY(100);
2147         }
2148         if (ntries == 400) {
2149                 device_printf(sc->sc_dev,
2150                     "timeout processing command blocks\n");
2151                 error = EIO;
2152                 goto fail4;
2153         }
2154
2155
2156         /* We're done with command blocks processing */
2157         MEM_WRITE_4(sc, 0x3000a4, 0x540c00);
2158
2159         /* Allow interrupts so we know when the firmware is inited */
2160         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK);
2161
2162         /* Tell the adapter to initialize the firmware */
2163         CSR_WRITE_4(sc, IWI_CSR_RST, 0);
2164         CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) |
2165             IWI_CTL_ALLOW_STANDBY);
2166
2167         /* Wait at most one second for firmware initialization to complete */
2168         if ((error = tsleep(IWI_FW_INITIALIZED(sc), 0, "iwiini", hz)) != 0) {
2169                 device_printf(sc->sc_dev, "timeout waiting for firmware "
2170                     "initialization to complete\n");
2171                 goto fail4;
2172         }
2173
2174 fail4:  bus_dmamap_sync(dmat, map, BUS_DMASYNC_POSTWRITE);
2175         bus_dmamap_unload(dmat, map);
2176 fail3:  bus_dmamem_free(dmat, virtaddr, map);
2177 fail2:  bus_dma_tag_destroy(dmat);
2178 fail1:
2179         return error;
2180 }
2181
2182 /*
2183  * Store firmware into kernel memory so we can download it when we need to,
2184  * e.g when the adapter wakes up from suspend mode.
2185  */
2186 static int
2187 iwi_cache_firmware(struct iwi_softc *sc, void *data, int is_ibss)
2188 {
2189         struct iwi_firmware *kfw = &sc->fw;
2190         struct iwi_firmware ufw;
2191         int error;
2192
2193         iwi_free_firmware(sc);
2194
2195         /*
2196          * mutex(9): no mutexes should be held across functions which access
2197          * memory in userspace, such as copyin(9) [...]
2198          */
2199
2200         if ((error = copyin(data, &ufw, sizeof ufw)) != 0)
2201                 goto fail1;
2202
2203         kfw->boot_size  = ufw.boot_size;
2204         kfw->ucode_size = ufw.ucode_size;
2205         kfw->main_size  = ufw.main_size;
2206
2207         kfw->boot = malloc(kfw->boot_size, M_DEVBUF, M_WAITOK);
2208         if (kfw->boot == NULL) {
2209                 error = ENOMEM;
2210                 goto fail1;
2211         }
2212
2213         kfw->ucode = malloc(kfw->ucode_size, M_DEVBUF, M_WAITOK);
2214         if (kfw->ucode == NULL) {
2215                 error = ENOMEM;
2216                 goto fail2;
2217         }
2218
2219         kfw->main = malloc(kfw->main_size, M_DEVBUF, M_WAITOK);
2220         if (kfw->main == NULL) {
2221                 error = ENOMEM;
2222                 goto fail3;
2223         }
2224
2225         if ((error = copyin(ufw.boot, kfw->boot, kfw->boot_size)) != 0)
2226                 goto fail4;
2227
2228         if ((error = copyin(ufw.ucode, kfw->ucode, kfw->ucode_size)) != 0)
2229                 goto fail4;
2230
2231         if ((error = copyin(ufw.main, kfw->main, kfw->main_size)) != 0)
2232                 goto fail4;
2233
2234         DPRINTF(("Firmware cached: boot %u, ucode %u, main %u\n",
2235             kfw->boot_size, kfw->ucode_size, kfw->main_size));
2236
2237
2238         sc->flags |= IWI_FLAG_FW_CACHED;
2239         sc->flags |= is_ibss ? IWI_FLAG_FW_IBSS : 0;
2240         return 0;
2241
2242 fail4:  free(kfw->boot, M_DEVBUF);
2243 fail3:  free(kfw->ucode, M_DEVBUF);
2244 fail2:  free(kfw->main, M_DEVBUF);
2245 fail1:
2246
2247         return error;
2248 }
2249
2250 static void
2251 iwi_free_firmware(struct iwi_softc *sc)
2252 {
2253         if (!(sc->flags & IWI_FLAG_FW_CACHED))
2254                 return;
2255
2256         free(sc->fw.boot, M_DEVBUF);
2257         free(sc->fw.ucode, M_DEVBUF);
2258         free(sc->fw.main, M_DEVBUF);
2259
2260         sc->flags &= ~( IWI_FLAG_FW_CACHED | IWI_FLAG_FW_IBSS );
2261 }
2262
2263 static int
2264 iwi_adapter_config(struct iwi_softc *sc, int is_a, int cmd_wait)
2265 {
2266         struct iwi_configuration config;
2267
2268         bzero(&config, sizeof config);
2269         config.enable_multicast = 1;
2270         config.noise_reported = 1;
2271
2272         config.bg_autodetect =
2273                 ( !(is_a) &&
2274                   ( sc->enable_bg_autodetect != 0 ) ) ? 1 : 0;  /* default: on  */
2275
2276         config.bluetooth_coexistence =
2277                 ( sc->enable_bt_coexist != 0 ) ? 1 : 0;         /* default: on  */
2278
2279         config.enable_cts_to_self =
2280                 ( sc->enable_cts_to_self > 0 ) ? 1 : 0;         /* default: off */
2281
2282         if (sc->antenna_diversity > 0 ) {                       /* default: BOTH */
2283                 switch( sc->antenna_diversity ) {
2284                         case 1: case 3:
2285                                 config.antenna_diversity = sc->antenna_diversity;
2286                 }
2287         }
2288
2289         config.disable_unicast_decryption =
2290                 ( sc->disable_unicast_decryption != 0 ) ? 1 : 0; /* default: on */
2291
2292         config.disable_multicast_decryption =
2293                 ( sc->disable_multicast_decryption != 0 ) ? 1 : 0;/* default: on */
2294
2295
2296         if ( sc->debug_level > 0 ) {
2297                 printf("config.bluetooth_coexistence = %d\n",
2298                          config.bluetooth_coexistence );
2299                 printf("config.bg_autodetect = %d\n",
2300                          config.bg_autodetect );
2301                 printf("config.enable_cts_to_self = %d\n",
2302                          config.enable_cts_to_self );
2303                 printf("config.antenna_diversity = %d\n",
2304                          config.antenna_diversity );
2305                 printf("config.disable_unicast_decryption = %d\n",
2306                          config.disable_unicast_decryption );
2307                 printf("config.disable_multicast_decryption = %d\n",
2308                          config.disable_multicast_decryption );
2309                 printf("config.neg_best_rates_first = %d\n",
2310                          sc->enable_neg_best_first );
2311         }
2312
2313         return iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config,
2314                  sizeof config, cmd_wait );
2315 }
2316
2317 static int
2318 iwi_config(struct iwi_softc *sc)
2319 {
2320         struct ieee80211com *ic = &sc->sc_ic;
2321         struct ifnet *ifp = &ic->ic_if;
2322         struct iwi_rateset rs;
2323         struct iwi_txpower power;
2324         struct ieee80211_wepkey *k;
2325         struct iwi_wep_key wepkey;
2326         u_int32_t data;
2327         int error, i;
2328
2329         IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp));
2330         DPRINTF(("Setting MAC address to %6D\n", ic->ic_myaddr, ":"));
2331         error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, ic->ic_myaddr,
2332             IEEE80211_ADDR_LEN, 0);
2333         if (error != 0)
2334                 return error;
2335
2336         DPRINTF(("Configuring adapter\n"));
2337         if ((error = iwi_adapter_config(sc, 1, 0)) != 0)
2338                 return error;
2339
2340         data = htole32(IWI_POWER_MODE_CAM);
2341         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2342         error = iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data, 0);
2343         if (error != 0)
2344                 return error;
2345
2346         data = htole32(ic->ic_rtsthreshold);
2347         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2348         error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data, 0);
2349         if (error != 0)
2350                 return error;
2351
2352         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2353                 power.mode = IWI_MODE_11B;
2354                 power.nchan = 11;
2355                 for (i = 0; i < 11; i++) {
2356                         power.chan[i].chan = i + 1;
2357                         power.chan[i].power = IWI_TXPOWER_MAX;
2358                 }
2359                 DPRINTF(("Setting .11b channels tx power\n"));
2360                 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power,
2361                     0);
2362                 if (error != 0)
2363                         return error;
2364
2365                 power.mode = IWI_MODE_11G;
2366                 DPRINTF(("Setting .11g channels tx power\n"));
2367                 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power,
2368                     0);
2369                 if (error != 0)
2370                         return error;
2371         }
2372
2373         rs.mode = IWI_MODE_11G;
2374         rs.type = IWI_RATESET_TYPE_SUPPORTED;
2375         rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates;
2376         bcopy(ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates, rs.rates,
2377             rs.nrates);
2378         DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates));
2379         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0);
2380         if (error != 0)
2381                 return error;
2382
2383         rs.mode = IWI_MODE_11A;
2384         rs.type = IWI_RATESET_TYPE_SUPPORTED;
2385         rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates;
2386         bcopy(ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates, rs.rates,
2387             rs.nrates);
2388         DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates));
2389         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0);
2390         if (error != 0)
2391                 return error;
2392
2393         data = htole32(arc4random());
2394         DPRINTF(("Setting initialization vector to %u\n", le32toh(data)));
2395         error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data, 0);
2396         if (error != 0)
2397                 return error;
2398
2399         if (ic->ic_flags & IEEE80211_F_WEPON) {
2400                 k = ic->ic_nw_keys;
2401                 for (i = 0; i < IEEE80211_WEP_NKID; i++, k++) {
2402                         wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY;
2403                         wepkey.idx = i;
2404                         wepkey.len = k->wk_len;
2405                         bzero(wepkey.key, sizeof wepkey.key);
2406                         bcopy(k->wk_key, wepkey.key, k->wk_len);
2407                         DPRINTF(("Setting wep key index %u len %u\n",
2408                             wepkey.idx, wepkey.len));
2409                         error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey,
2410                             sizeof wepkey, 0);
2411                         if (error != 0)
2412                                 return error;
2413                 }
2414         }
2415
2416         /* Enable adapter */
2417         DPRINTF(("Enabling adapter\n"));
2418         return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0, 0);
2419 }
2420
2421 static int
2422 iwi_scan(struct iwi_softc *sc)
2423 {
2424         struct ieee80211com *ic = &sc->sc_ic;
2425         struct iwi_scan scan;
2426         u_int8_t *p;
2427         int i, count;
2428         int do_5ghz_scan = 0;
2429
2430         sc->scan_counter++; /* track the number of scans started */
2431
2432         sc->flags |= IWI_FLAG_SCANNING;
2433
2434         bzero(&scan, sizeof scan);
2435
2436         /*
2437          * Alternate two broadcast scans with
2438          * two broadcast/direct scans.
2439          */
2440         if ( sc->scan_counter & 2 ) {
2441                 scan.type = IWI_SCAN_TYPE_BROADCAST_AND_DIRECT;
2442                 scan.intval = htole16(100);
2443         } else {
2444                 scan.type = IWI_SCAN_TYPE_BROADCAST;
2445                 scan.intval = htole16(40);
2446         }
2447
2448         p = scan.channels;
2449
2450         /*
2451          * If we have .11a capable adapter, and
2452          *      - we are in .11a mode, or
2453          *      - we are in auto mode and this is an odd numbered scan
2454          * then do a 5GHz scan, otherwise do a 2GHz scan.
2455          */
2456         if ( ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates > 0 ) {
2457                 if (( ic->ic_curmode == IEEE80211_MODE_11A ) ||
2458                     (( ic->ic_curmode == IEEE80211_MODE_AUTO ) &&
2459                      ( sc->scan_counter & 1)))
2460                         do_5ghz_scan = 1;
2461         }
2462         count = 0;
2463         if ( do_5ghz_scan ) {
2464                 DPRINTF(("Scanning 5GHz band\n"));
2465                 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) {
2466                         if (IEEE80211_IS_CHAN_5GHZ(&ic->ic_channels[i]) &&
2467                                         isset(ic->ic_chan_active, i)) {
2468                                 *++p = i;
2469                                 count++;
2470                         }
2471                 }
2472                 *(p - count) = IWI_CHAN_5GHZ | count;
2473         } else {
2474                 DPRINTF(("Scanning 2GHz band\n"));
2475                 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) {
2476                         if (IEEE80211_IS_CHAN_2GHZ(&ic->ic_channels[i]) &&
2477                                         isset(ic->ic_chan_active, i)) {
2478                                 *++p = i;
2479                                 count++;
2480                         }
2481                 }
2482                 *(p - count) = IWI_CHAN_2GHZ | count;
2483         }
2484         return iwi_cmd(sc, IWI_CMD_SCAN, &scan, sizeof scan, 1);
2485 }
2486
2487 static int
2488 iwi_auth_and_assoc(struct iwi_softc *sc)
2489 {
2490         struct ieee80211com *ic = &sc->sc_ic;
2491         struct ifnet *ifp = &ic->ic_if;
2492         struct ieee80211_node *ni = ic->ic_bss;
2493         struct iwi_rateset rs;
2494         u_int32_t data;
2495         int error, x;
2496
2497         if ( ( sc->flags & IWI_FLAG_FW_IBSS ) &&
2498              !( ni->ni_capinfo & IEEE80211_CAPINFO_IBSS ) ) {
2499                 return -1; /* IBSS F/W requires network ibss capability */
2500         }
2501
2502         DPRINTF(("Configuring adapter\n"));
2503         if ((error = iwi_adapter_config(sc,
2504                 IEEE80211_IS_CHAN_5GHZ(ni->ni_chan), 1)) != 0)
2505                         return error;
2506
2507 #ifdef IWI_DEBUG
2508         if (sc->debug_level > 0) {
2509                 printf("Setting ESSID to ");
2510                 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
2511                 printf("\n");
2512         }
2513 #endif
2514         error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen, 1);
2515         if (error != 0)
2516                 return error;
2517
2518         /* the rate set has already been "negotiated" */
2519         rs.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A :
2520             IWI_MODE_11G;
2521         rs.type = IWI_RATESET_TYPE_NEGOTIATED;
2522         rs.nrates = ni->ni_rates.rs_nrates;
2523         if ( sc->enable_neg_best_first != 1 ) {
2524                 bcopy(ni->ni_rates.rs_rates, rs.rates, rs.nrates);
2525         } else {
2526                 for ( x = 0 ; x < rs.nrates; x++ ) {
2527                         /*
2528                          * Present the firmware with the most favourable
2529                          * of the negotiated rates first.
2530                          */
2531                         rs.rates[rs.nrates-x-1] = ni->ni_rates.rs_rates[x];
2532                 }
2533         }
2534
2535         if ( sc->debug_level > 0 ) {
2536                 printf("Setting negotiated rates (%u) : ", rs.nrates);
2537                 for ( x = 0 ; x < rs.nrates; x++ ) {
2538                         printf("%d ", rs.rates[x]);
2539                 }
2540                 printf("\n");
2541         }
2542
2543         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 1);
2544         if (error != 0)
2545                 return error;
2546
2547         data = htole32(ni->ni_rssi);
2548         DPRINTF(("Setting sensitivity to %d\n", (int8_t)ni->ni_rssi));
2549         error = iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &data, sizeof data, 1);
2550         if (error != 0)
2551                 return error;
2552
2553         bzero(&sc->assoc, sizeof sc->assoc);
2554         sc->assoc.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A :
2555             IWI_MODE_11G;
2556         sc->assoc.chan = ieee80211_chan2ieee(ic, ni->ni_chan);
2557         if (sc->authmode == IEEE80211_AUTH_SHARED)
2558                 sc->assoc.auth = (ic->ic_wep_txkey << 4) | IWI_AUTH_SHARED;
2559         bcopy(ni->ni_tstamp, sc->assoc.tstamp, 8);
2560         sc->assoc.capinfo = htole16(ni->ni_capinfo);
2561         sc->assoc.lintval = htole16(ic->ic_lintval);
2562         sc->assoc.intval = htole16(ni->ni_intval);
2563         IEEE80211_ADDR_COPY(sc->assoc.bssid, ni->ni_bssid);
2564         if ( ic->ic_opmode == IEEE80211_M_IBSS )
2565                 IEEE80211_ADDR_COPY(sc->assoc.dst, ifp->if_broadcastaddr);
2566         else
2567                 IEEE80211_ADDR_COPY(sc->assoc.dst, ni->ni_bssid);
2568
2569         DPRINTF(("Trying to associate to %6D channel %u auth %u\n",
2570             sc->assoc.bssid, ":", sc->assoc.chan, sc->assoc.auth));
2571         return iwi_cmd(sc, IWI_CMD_ASSOCIATE, &sc->assoc, sizeof sc->assoc, 1);
2572 }
2573
2574 static void
2575 iwi_init(void *priv)
2576 {
2577         struct iwi_softc *sc = priv;
2578         struct ieee80211com *ic = &sc->sc_ic;
2579         struct ifnet *ifp = &ic->ic_if;
2580         struct iwi_firmware *fw = &sc->fw;
2581         int i;
2582
2583         /* exit immediately if firmware has not been ioctl'd */
2584         if (!(sc->flags & IWI_FLAG_FW_CACHED)) {
2585                 ifp->if_flags &= ~IFF_UP;
2586                 return;
2587         }
2588
2589         iwi_stop(sc);
2590
2591         if (iwi_reset(sc) != 0) {
2592                 device_printf(sc->sc_dev, "could not reset adapter\n");
2593                 goto fail;
2594         }
2595
2596         if (iwi_load_firmware(sc, fw->boot, fw->boot_size) != 0) {
2597                 device_printf(sc->sc_dev, "could not load boot firmware\n");
2598                 goto fail;
2599         }
2600
2601         if (iwi_load_ucode(sc, fw->ucode, fw->ucode_size) != 0) {
2602                 device_printf(sc->sc_dev, "could not load microcode\n");
2603                 goto fail;
2604         }
2605
2606         iwi_stop_master(sc);
2607
2608         sc->tx_cur = 0;
2609         sc->tx_queued = 0;
2610         sc->tx_old = IWI_TX_RING_SIZE - 1;
2611         sc->cmd_cur = 0;
2612         sc->rx_cur = IWI_RX_RING_SIZE - 1;
2613
2614         CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmd_ring_pa);
2615         CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, IWI_CMD_RING_SIZE);
2616         CSR_WRITE_4(sc, IWI_CSR_CMD_READ_INDEX, 0);
2617         CSR_WRITE_4(sc, IWI_CSR_CMD_WRITE_INDEX, sc->cmd_cur);
2618
2619         CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->tx_ring_pa);
2620         CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, IWI_TX_RING_SIZE);
2621         CSR_WRITE_4(sc, IWI_CSR_TX1_READ_INDEX, 0);
2622         CSR_WRITE_4(sc, IWI_CSR_TX1_WRITE_INDEX, sc->tx_cur);
2623
2624         CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->tx_ring_pa);
2625         CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, IWI_TX_RING_SIZE);
2626         CSR_WRITE_4(sc, IWI_CSR_TX2_READ_INDEX, 0);
2627         CSR_WRITE_4(sc, IWI_CSR_TX2_WRITE_INDEX, 0);
2628
2629         CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->tx_ring_pa);
2630         CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, IWI_TX_RING_SIZE);
2631         CSR_WRITE_4(sc, IWI_CSR_TX3_READ_INDEX, 0);
2632         CSR_WRITE_4(sc, IWI_CSR_TX3_WRITE_INDEX, 0);
2633
2634         CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->tx_ring_pa);
2635         CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, IWI_TX_RING_SIZE);
2636         CSR_WRITE_4(sc, IWI_CSR_TX4_READ_INDEX, 0);
2637         CSR_WRITE_4(sc, IWI_CSR_TX4_WRITE_INDEX, 0);
2638
2639         for (i = 0; i < IWI_RX_RING_SIZE; i++)
2640                 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4,
2641                     sc->rx_buf[i].physaddr);
2642
2643         /*
2644          * Kick Rx
2645          */
2646         CSR_WRITE_4(sc, IWI_CSR_RX_WRITE_INDEX, sc->rx_cur);
2647         CSR_WRITE_4(sc, IWI_CSR_RX_READ_INDEX, 0);
2648
2649         if (iwi_load_firmware(sc, fw->main, fw->main_size) != 0) {
2650                 device_printf(sc->sc_dev, "could not load main firmware\n");
2651                 goto fail;
2652         }
2653
2654         /*
2655          * Force the opmode based on what firmware is loaded. This
2656          * stops folks from killing the firmware by asking it to
2657          * do something it doesn't support.
2658          */
2659         if ( ic->ic_opmode != IEEE80211_M_MONITOR ) {
2660                 ic->ic_opmode = ( sc->flags & IWI_FLAG_FW_IBSS )
2661                         ? IEEE80211_M_IBSS : IEEE80211_M_STA;
2662         }
2663
2664         sc->flags |= IWI_FLAG_FW_INITED;
2665
2666         sc->flags &= ~( IWI_FLAG_SCANNING |
2667                         IWI_FLAG_SCAN_COMPLETE |
2668                         IWI_FLAG_SCAN_ABORT |
2669                         IWI_FLAG_ASSOCIATED );
2670
2671         if (iwi_config(sc) != 0) {
2672                 device_printf(sc->sc_dev, "device configuration failed\n");
2673                 goto fail;
2674         }
2675
2676         if ( ic->ic_opmode != IEEE80211_M_MONITOR ) {
2677                 ieee80211_begin_scan(ifp);
2678                 ifp->if_flags &= ~IFF_OACTIVE;
2679                 ifp->if_flags |= IFF_RUNNING;
2680         } else {
2681                 ieee80211_begin_scan(ifp);
2682                 ifp->if_flags &= ~IFF_OACTIVE;
2683                 ifp->if_flags |= IFF_RUNNING;
2684         }
2685
2686         return;
2687
2688 fail:
2689         if ( !(sc->flags & IWI_FLAG_RESET) )
2690                 ifp->if_flags &= ~IFF_UP;
2691         iwi_stop(sc);
2692 }
2693
2694 static void
2695 iwi_init_locked(void *priv)
2696 {
2697         struct iwi_softc *sc = priv;
2698         IWI_LOCK_INFO;
2699         IWI_LOCK(sc);
2700         iwi_init(sc);
2701         IWI_UNLOCK(sc);
2702 }
2703
2704 static void
2705 iwi_stop(void *priv)
2706 {
2707         struct iwi_softc *sc = priv;
2708         struct ieee80211com *ic = &sc->sc_ic;
2709         struct ifnet *ifp = &ic->ic_if;
2710         struct iwi_tx_buf *buf;
2711         int i;
2712
2713         iwi_stop_master(sc);
2714         CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SW_RESET);
2715
2716         /*
2717          * Release Tx buffers
2718          */
2719         for (i = 0; i < IWI_TX_RING_SIZE; i++) {
2720                 buf = &sc->tx_buf[i];
2721
2722                 if (buf->m != NULL) {
2723                         bus_dmamap_sync(sc->tx_buf_dmat, buf->map,
2724                             BUS_DMASYNC_POSTWRITE);
2725                         bus_dmamap_unload(sc->tx_buf_dmat, buf->map);
2726                         m_freem(buf->m);
2727                         buf->m = NULL;
2728
2729                         if (buf->ni != NULL) {
2730                                 if (buf->ni != ic->ic_bss)
2731                                         ieee80211_free_node(ic, buf->ni);
2732                                 buf->ni = NULL;
2733                         }
2734                 }
2735         }
2736
2737         ifp->if_timer = 0;
2738         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
2739
2740         ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
2741 }
2742
2743 static int8_t
2744 iwi_cache_station(struct iwi_softc *sc, u_int8_t *mac)
2745 {
2746         int i, x, base, elemsize = sizeof(struct iwi_fw_station);
2747         for (i = 0; i < sc->num_stations; i++)
2748                 if (!memcmp(sc->stations[i], mac, IEEE80211_ADDR_LEN))
2749                         break;
2750         if (i == IWI_FW_MAX_STATIONS)
2751                 return 0xff;
2752         memcpy(sc->stations[i], mac, IEEE80211_ADDR_LEN);
2753         for (x = 0, base = IWI_STATION_TABLE + (i * elemsize) ;
2754              x < IEEE80211_ADDR_LEN ; x++ ) {
2755                 CSR_WRITE_1(sc, base + x, mac[x]);
2756         }
2757         if ( (i + 1) > sc->num_stations )
2758                 sc->num_stations++;
2759         return i;
2760 }
2761
2762 static u_int8_t
2763 iwi_find_station(struct iwi_softc *sc, u_int8_t *mac)
2764 {
2765         u_int8_t i;
2766         for (i = 0; i < sc->num_stations; i++)
2767                 if (!memcmp(sc->stations[i], mac, IEEE80211_ADDR_LEN))
2768                         return i;
2769         return 0xff;
2770 }
2771
2772 static const char *
2773 iwi_error_desc(u_int32_t val)
2774 {
2775         switch (val) {
2776         case IWI_FW_ERROR_OK:
2777                 return "OK";
2778         case IWI_FW_ERROR_FAIL:
2779                 return "FAIL";
2780         case IWI_FW_ERROR_MEMORY_UNDERFLOW:
2781                 return "MEMORY_UNDERFLOW";
2782         case IWI_FW_ERROR_MEMORY_OVERFLOW:
2783                 return "MEMORY_OVERFLOW";
2784         case IWI_FW_ERROR_BAD_PARAM:
2785                 return "BAD_PARAMETER";
2786         case IWI_FW_ERROR_BAD_CHECKSUM:
2787                 return "BAD_CHECKSUM";
2788         case IWI_FW_ERROR_NMI_INTERRUPT:
2789                 return "NMI_INTERRUPT";
2790         case IWI_FW_ERROR_BAD_DATABASE:
2791                 return "BAD_DATABASE";
2792         case IWI_FW_ERROR_ALLOC_FAIL:
2793                 return "ALLOC_FAIL";
2794         case IWI_FW_ERROR_DMA_UNDERRUN:
2795                 return "DMA_UNDERRUN";
2796         case IWI_FW_ERROR_DMA_STATUS:
2797                 return "DMA_STATUS";
2798         case IWI_FW_ERROR_DINOSTATUS_ERROR:
2799                 return "DINOSTATUS_ERROR";
2800         case IWI_FW_ERROR_EEPROMSTATUS_ERROR:
2801                 return "EEPROMSTATUS_ERROR";
2802         case IWI_FW_ERROR_SYSASSERT:
2803                 return "SYSASSERT";
2804         case IWI_FW_ERROR_FATAL_ERROR:
2805                 return "FATAL";
2806         default:
2807                 return "UNKNOWN_ERROR";
2808         }
2809 }
2810
2811 static void
2812 iwi_dump_fw_event_log(struct iwi_softc *sc)
2813 {
2814         u_int32_t ev, time, data, i, count, base;
2815         base = CSR_READ_4(sc, IWI_FW_EVENT_LOG);
2816         count = MEM_READ_4(sc, base);
2817         if ( count > 0 && (sc->flags & IWI_FLAG_FW_INITED) ) {
2818                 printf("Reading %d event log entries from base address 0x%x.\n",
2819                         count,  base);
2820                 if (IWI_FW_EVENT_START_OFFSET <= count * IWI_FW_EVENT_ELEM_SIZE)
2821                         device_printf(sc->sc_dev,"Start IWI Event Log Dump:\n");
2822                 for (i = IWI_FW_EVENT_START_OFFSET;
2823                                 i <= count * IWI_FW_EVENT_ELEM_SIZE;
2824                                 i += IWI_FW_EVENT_ELEM_SIZE) {
2825                         ev = MEM_READ_4(sc, base + i);
2826                         time  = MEM_READ_4(sc, base + i + 1 * sizeof(u_int32_t));
2827                         data  = MEM_READ_4(sc, base + i + 2 * sizeof(u_int32_t));
2828                         printf("%d %8p %8.8d\n", time, (void *) data, ev);
2829                 }
2830         } else {
2831                 printf("There are no entries in the firmware event log.\n");
2832         }
2833 }
2834
2835 static void
2836 iwi_dump_fw_error_log(struct iwi_softc *sc)
2837 {
2838         u_int32_t i = 0;
2839         int32_t count, base;
2840         base = CSR_READ_4(sc, IWI_FW_ERROR_LOG);
2841         count = MEM_READ_4(sc, base);
2842         if ( count > 0 && (sc->flags & IWI_FLAG_FW_INITED) ) {
2843                 printf("Reading %d error log entries "
2844                     "from base address 0x%p.\n", count,  (void *)base);
2845                 for ( i = IWI_FW_ERROR_START_OFFSET;
2846                         i <= count * IWI_FW_EVENT_ELEM_SIZE;
2847                         i += IWI_FW_ERROR_ELEM_SIZE ) {
2848                         u_int32_t elems;
2849                         printf("%15.15s",
2850                             iwi_error_desc(MEM_READ_4(sc, base + i)));
2851                         printf(" time(%8.8d)", MEM_READ_4(sc, base + i + 4));
2852                         for ( elems = 2 ; elems < 7 ; elems++ ) {
2853                                 printf(" %8p", (void *)
2854                                     MEM_READ_4(sc, base + i + (4 * elems)));
2855                         }
2856                         printf("\n");
2857                 }
2858         }
2859 }
2860
2861 static int
2862 iwi_sysctl_cts_to_self(SYSCTL_HANDLER_ARGS)
2863 {
2864         struct iwi_softc *sc = (void *)arg1;
2865         int cts_to_self = sc->enable_cts_to_self;
2866         int error = sysctl_handle_int(oidp, &cts_to_self, 0, req);
2867
2868         (void)arg2; /* silence WARNS == 6 */
2869
2870         if ( !error && req->newptr && cts_to_self != sc->enable_cts_to_self ) {
2871                 switch ( cts_to_self ) {
2872                         case -1: case 0: case 1:
2873                                 sc->enable_cts_to_self = cts_to_self;
2874                                 error = iwi_adapter_config(sc, 0, 0);
2875                         break;
2876                 }
2877         }
2878         return error;
2879 }
2880
2881
2882 static int
2883 iwi_sysctl_antenna_diversity(SYSCTL_HANDLER_ARGS)
2884 {
2885         struct iwi_softc *sc = (void *)arg1;
2886         int antenna_diversity = sc->antenna_diversity;
2887         int error = sysctl_handle_int(oidp, &antenna_diversity, 0, req);
2888
2889         (void)arg2; /* silence WARNS == 6 */
2890
2891         if ( !error && req->newptr && antenna_diversity != sc->antenna_diversity ) {
2892                 switch ( antenna_diversity ) {
2893                         case 1: case 3: case 0: case -1:
2894                                 sc->antenna_diversity = antenna_diversity;
2895                                 error = iwi_adapter_config(sc, 0, 0);
2896                         break;
2897                 }
2898         }
2899         return error;
2900 }
2901
2902 static int
2903 iwi_sysctl_bg_autodetect(SYSCTL_HANDLER_ARGS)
2904 {
2905         struct iwi_softc *sc = (void *)arg1;
2906         int bg_autodetect = sc->enable_bg_autodetect;
2907         int error = sysctl_handle_int(oidp, &bg_autodetect, 0, req);
2908
2909         (void)arg2; /* silence WARNS == 6 */
2910
2911         if ( !error && req->newptr && bg_autodetect != sc->enable_bg_autodetect ) {
2912                 switch ( bg_autodetect ) {
2913                         case 1: case 0: case -1:
2914                                 sc->enable_bg_autodetect = bg_autodetect;
2915                                 error = iwi_adapter_config(sc, 0, 0);
2916                         break;
2917                 }
2918         }
2919         return error;
2920 }
2921
2922 static int
2923 iwi_sysctl_bt_coexist(SYSCTL_HANDLER_ARGS)
2924 {
2925         struct iwi_softc *sc = (void *)arg1;
2926         int bt_coexist = sc->enable_bt_coexist;
2927         int error = sysctl_handle_int(oidp, &bt_coexist, 0, req);
2928
2929         (void)arg2; /* silence WARNS == 6 */
2930
2931         if ( !error && req->newptr && bt_coexist != sc->enable_bt_coexist ) {
2932                 switch ( bt_coexist ) {
2933                         case 1: case 0: case -1:
2934                                 sc->enable_bt_coexist = bt_coexist;
2935                                 error = iwi_adapter_config(sc, 0, 0);
2936                         break;
2937                 }
2938         }
2939         return error;
2940 }
2941
2942 static int
2943 iwi_sysctl_dump_logs(SYSCTL_HANDLER_ARGS)
2944 {
2945         struct iwi_softc *sc = arg1;
2946         int result = -1;
2947         int error = sysctl_handle_int(oidp, &result, 0, req);
2948
2949         (void)arg2; /* silence WARNS == 6 */
2950
2951         if (!error && req->newptr && result == 1) {
2952                 iwi_dump_fw_event_log(sc);
2953                 iwi_dump_fw_error_log(sc);
2954         }
2955         return error;
2956 }
2957
2958 static int
2959 iwi_sysctl_stats(SYSCTL_HANDLER_ARGS)
2960 {
2961         struct iwi_softc *sc = arg1;
2962         u_int32_t size;
2963         struct iwi_dump_buffer dump;
2964
2965         (void)arg2; /* silence WARNS == 6 */
2966         (void)oidp; /* silence WARNS == 6 */
2967
2968         if (!(sc->flags & IWI_FLAG_FW_INITED)) {
2969                 bzero(dump.buf, sizeof dump.buf);
2970                 return SYSCTL_OUT(req, &dump, sizeof dump);
2971         }
2972
2973         size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1);
2974         CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &dump.buf[1], size);
2975
2976         return SYSCTL_OUT(req, &dump, sizeof dump);
2977 }
2978
2979 static int
2980 iwi_sysctl_radio(SYSCTL_HANDLER_ARGS)
2981 {
2982         struct iwi_softc *sc = arg1;
2983         int val;
2984
2985         (void)arg2; /* silence WARNS == 6 */
2986         (void)oidp; /* silence WARNS == 6 */
2987
2988         val = (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) ? 1 : 0;
2989         return SYSCTL_OUT(req, &val, sizeof val);
2990 }
2991
2992 static int
2993 iwi_sysctl_neg_best_rates_first(SYSCTL_HANDLER_ARGS)
2994 {
2995         struct iwi_softc *sc = arg1;
2996         int best_first = sc->enable_neg_best_first;
2997         int error = sysctl_handle_int(oidp, &best_first, 0, req);
2998
2999         (void)arg2; /* silence WARNS == 6 */
3000         (void)oidp; /* silence WARNS == 6 */
3001
3002         if ( !error && req->newptr && best_first != sc->enable_neg_best_first ) {
3003                 switch ( best_first ) {
3004                         case 1: case 0: case -1:
3005                                 sc->enable_neg_best_first = best_first;
3006                         break;
3007                 }
3008         }
3009         return error;
3010 }
3011
3012 static int
3013 iwi_sysctl_disable_unicast_decryption(SYSCTL_HANDLER_ARGS)
3014 {
3015         struct iwi_softc *sc = arg1;
3016         int disable_uni = sc->disable_unicast_decryption;
3017         int error = sysctl_handle_int(oidp, &disable_uni, 0, req);
3018
3019         (void)arg2; /* silence WARNS == 6 */
3020         (void)oidp; /* silence WARNS == 6 */
3021
3022         if (!error && req->newptr && disable_uni != sc->disable_unicast_decryption) {
3023                 switch ( disable_uni ) {
3024                         case 1: case 0: case -1:
3025                                 sc->disable_unicast_decryption = disable_uni;
3026                         break;
3027                 }
3028         }
3029         return error;
3030 }
3031
3032 static int
3033 iwi_sysctl_disable_multicast_decryption(SYSCTL_HANDLER_ARGS)
3034 {
3035         struct iwi_softc *sc = arg1;
3036         int disable_mul = sc->disable_multicast_decryption;
3037         int error = sysctl_handle_int(oidp, &disable_mul, 0, req);
3038
3039         (void)arg2; /* silence WARNS == 6 */
3040         (void)oidp; /* silence WARNS == 6 */
3041
3042         if (!error && req->newptr && disable_mul!=sc->disable_multicast_decryption){
3043                 switch ( disable_mul ) {
3044                         case 1: case 0: case -1:
3045                                 sc->disable_multicast_decryption = disable_mul;
3046                         break;
3047                 }
3048         }
3049         return error;
3050 }
3051
3052