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 1.6 2005/07/26 12:40:38 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                 error = ENXIO;
 326                 goto fail;
 327         }
 328
 329         sc->sc_st = rman_get_bustag(sc->mem);
 330         sc->sc_sh = rman_get_bushandle(sc->mem);
 331
 332         rid = 0;
 333         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE |
 334             RF_SHAREABLE);
 335         if (sc->irq == NULL) {
 336                 device_printf(dev, "could not allocate interrupt resource\n");
 337                 error = ENXIO;
 338                 goto fail;
 339         }
 340
 341         error = iwi_reset(sc);
 342         if (error != 0) {
 343                 device_printf(dev, "could not reset adapter\n");
 344                 goto fail;
 345         }
 346
 347         if (iwi_start_fw_monitor_thread(sc)) {
 348                 device_printf(dev, "could not start f/w reset thread\n");
 349                 error = ENXIO;
 350                 goto fail;
 351         }
 352
 353         error = iwi_dma_alloc(sc);
 354         if (error != 0) {
 355                 device_printf(dev, "could not allocate DMA resources\n");
 356                 goto fail;
 357         }
 358
 359         ic->ic_phytype = IEEE80211_T_OFDM;
 360         ic->ic_opmode  = IEEE80211_M_STA;
 361         ic->ic_state   = IEEE80211_S_INIT;
 362
 363         /* set device capabilities */
 364         ic->ic_caps = IEEE80211_C_IBSS | IEEE80211_C_PMGT | IEEE80211_C_WEP |
 365             IEEE80211_C_TXPMGT | IEEE80211_C_SHPREAMBLE;
 366
 367         /* read MAC address from EEPROM */
 368         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0);
 369         ic->ic_myaddr[0] = val >> 8;
 370         ic->ic_myaddr[1] = val & 0xff;
 371         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1);
 372         ic->ic_myaddr[2] = val >> 8;
 373         ic->ic_myaddr[3] = val & 0xff;
 374         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2);
 375         ic->ic_myaddr[4] = val >> 8;
 376         ic->ic_myaddr[5] = val & 0xff;
 377
 378         if (pci_get_device(dev) != 0x4220) {
 379                 /* set supported .11a rates */
 380                 ic->ic_sup_rates[IEEE80211_MODE_11A] = iwi_rateset_11a;
 381
 382                 /* set supported .11a channels */
 383                 for (i = 36; i <= 64; 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                 for (i = 149; i <= 165; i += 4) {
 389                         ic->ic_channels[i].ic_freq =
 390                             ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
 391                         ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
 392                 }
 393         }
 394
 395         /* set supported .11b and .11g rates */
 396         ic->ic_sup_rates[IEEE80211_MODE_11B] = iwi_rateset_11b;
 397         ic->ic_sup_rates[IEEE80211_MODE_11G] = iwi_rateset_11g;
 398
 399         /* set supported .11b and .11g channels (1 through 14) */
 400         for (i = 1; i <= 14; i++) {
 401                 ic->ic_channels[i].ic_freq =
 402                     ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 403                 ic->ic_channels[i].ic_flags =
 404                     IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM |
 405                     IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ;
 406         }
 407
 408         /* default to authmode OPEN */
 409         sc->authmode = IEEE80211_AUTH_OPEN;
 410
 411         /* IBSS channel undefined for now */
 412         ic->ic_ibss_chan = &ic->ic_channels[0];
 413
 414         ifp->if_softc = sc;
 415         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 416         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 417         ifp->if_init = iwi_init_locked;
 418         ifp->if_ioctl = iwi_ioctl;
 419         ifp->if_start = iwi_start;
 420         ifp->if_watchdog = iwi_watchdog;
 421         ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
 422         ifq_set_ready(&ifp->if_snd);
 423
 424         ieee80211_ifattach(ifp);
 425         /* override state transition machine */
 426         sc->sc_newstate = ic->ic_newstate;
 427         ic->ic_newstate = iwi_newstate;
 428         ieee80211_media_init(ifp, iwi_media_change, iwi_media_status);
 429
 430         bpfattach_dlt(ifp, DLT_IEEE802_11_RADIO,
 431             sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf);
 432
 433         sc->sc_rxtap_len = sizeof sc->sc_rxtapu;
 434         sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
 435         sc->sc_rxtap.wr_ihdr.it_present = htole32(IWI_RX_RADIOTAP_PRESENT);
 436
 437         sc->sc_txtap_len = sizeof sc->sc_txtapu;
 438         sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
 439         sc->sc_txtap.wt_ihdr.it_present = htole32(IWI_TX_RADIOTAP_PRESENT);
 440
 441         /*
 442          * Add sysctl knobs
 443          *
 444          * use -1 to indicate 'default / not set'
 445          */
 446
 447         sc->enable_bg_autodetect         = -1;
 448         sc->enable_bt_coexist            = -1;
 449         sc->enable_cts_to_self           = -1;
 450         sc->antenna_diversity            = -1;
 451         sc->enable_neg_best_first        = -1;
 452         sc->disable_unicast_decryption   = -1;
 453         sc->disable_multicast_decryption = -1;
 454
 455         sysctl_ctx_init(&sc->sysctl_ctx);
 456         sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
 457                                 SYSCTL_STATIC_CHILDREN(_hw),
 458                                 OID_AUTO,
 459                                 device_get_nameunit(dev),
 460                                 CTLFLAG_RD,
 461                                 0, "");
 462
 463         if (sc->sysctl_tree == NULL) {
 464                 device_printf(dev, "sysctl add node failed\n");
 465                 error = EIO;
 466                 goto fail2;
 467         }
 468
 469         SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
 470                        OID_AUTO, "debug", CTLFLAG_RW, &sc->debug_level, 0,
 471                       "Set driver debug level (0 = off)");
 472
 473         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 474                         SYSCTL_CHILDREN(sc->sysctl_tree),
 475                         OID_AUTO, "cts_to_self", CTLTYPE_INT|CTLFLAG_RW,
 476                         (void *)sc, 0, iwi_sysctl_cts_to_self, "I",
 477                         "Enable cts to self [0 = Off] [1 = On] [-1 = Auto]" );
 478
 479         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 480                         SYSCTL_CHILDREN(sc->sysctl_tree),
 481                         OID_AUTO, "antenna_diversity", CTLTYPE_INT|CTLFLAG_RW,
 482                         (void *)sc, 0, iwi_sysctl_antenna_diversity,
 483                         "I", "Set antenna diversity [0 = Both] "
 484                         "[1 = Antenna A] [3 = Antenna B] [-1 = Auto]" );
 485
 486         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 487                         SYSCTL_CHILDREN(sc->sysctl_tree),
 488                         OID_AUTO, "bluetooth_coexist", CTLTYPE_INT|CTLFLAG_RW,
 489                         (void *)sc, 0, iwi_sysctl_bt_coexist,
 490                         "I", "Enable bluetooth coexistence heuristics "
 491                         "[0 = Off] [1 = On] [-1 = Auto]" );
 492
 493         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 494                         SYSCTL_CHILDREN(sc->sysctl_tree),
 495                         OID_AUTO, "bg_autodetect", CTLTYPE_INT|CTLFLAG_RW,
 496                         (void *)sc, 0, iwi_sysctl_bg_autodetect,
 497                         "I", "Set b/g autodetect [0 = Off] [1 = On] [-1 = Auto]" );
 498
 499
 500         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 501                         SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "radio",
 502                         CTLTYPE_INT | CTLFLAG_RD, sc, 0, iwi_sysctl_radio, "I",
 503                         "Radio transmitter switch");
 504
 505         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 506                         SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "stats",
 507                         CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, iwi_sysctl_stats,
 508                         "S,iwi_dump_buffer", "statistics");
 509
 510         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 511                         SYSCTL_CHILDREN(sc->sysctl_tree),
 512                         OID_AUTO, "firmware_logs", CTLTYPE_INT|CTLFLAG_RW,
 513                         (void *)sc, 0, iwi_sysctl_dump_logs, "I", "Dump firmware logs");
 514
 515         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 516                         SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 517                         "neg_best_rates_first",
 518                         CTLTYPE_INT | CTLFLAG_RW, sc, 0,
 519                         iwi_sysctl_neg_best_rates_first, "I",
 520                          "Negotiate highest rates first.");
 521
 522         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 523                         SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 524                         "disable_unicast_decrypt",
 525                         CTLTYPE_INT | CTLFLAG_RW, sc, 0,
 526                         iwi_sysctl_disable_unicast_decryption, "I",
 527                          "Disable unicast decryption.");
 528
 529         SYSCTL_ADD_PROC(&sc->sysctl_ctx,
 530                         SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
 531                         "disable_multicast_decrypt",
 532                         CTLTYPE_INT | CTLFLAG_RW, sc, 0,
 533                         iwi_sysctl_disable_multicast_decryption, "I",
 534                          "Disable multicast decryption.");
 535
 536         /*
 537          * Hook our interrupt after all initialization is complete
 538          */
 539         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 540                                iwi_intr, sc, &sc->sc_ih, NULL);
 541         if (error != 0) {
 542                 device_printf(dev, "could not set up interrupt\n");
 543                 goto fail2;
 544         }
 545
 546         return 0;
 547
 548 fail2:
 549         bpfdetach(ifp);
 550         ieee80211_ifdetach(ifp);
 551 fail:
 552         iwi_detach(dev);
 553         return error;
 554 }
 555
 556 static int
 557 iwi_detach(device_t dev)
 558 {
 559         struct iwi_softc *sc = device_get_softc(dev);
 560         struct ifnet *ifp = &sc->sc_ic.ic_if;
 561         IWI_LOCK_INFO;
 562         IWI_IPLLOCK_INFO;
 563
 564         sc->flags |= IWI_FLAG_EXIT;
 565         wakeup(IWI_FW_WAKE_MONITOR(sc)); /* Stop firmware monitor. */
 566
 567         tsleep(IWI_FW_MON_EXIT(sc), 0, "iwiexi", 10 * hz);
 568
 569         IWI_LOCK(sc);
 570         IWI_IPLLOCK(sc);
 571
 572         if (device_is_attached(dev)) {
 573                 iwi_stop(sc);
 574                 iwi_free_firmware(sc);
 575                 bpfdetach(ifp);
 576                 ieee80211_ifdetach(ifp);
 577         }
 578
 579         if (sc->sysctl_tree) {
 580                 crit_enter();
 581                 sysctl_ctx_free(&sc->sysctl_ctx);
 582                 crit_exit();
 583                 sc->sysctl_tree = 0;
 584         }
 585
 586         if (sc->sc_ih != NULL)
 587                 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 588
 589         IWI_IPLUNLOCK(sc);
 590         IWI_UNLOCK(sc);
 591
 592         if (sc->irq != NULL)
 593                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq);
 594
 595         if (sc->mem != NULL) {
 596                 bus_release_resource(dev, SYS_RES_MEMORY, IWI_PCI_BAR0,
 597                     sc->mem);
 598         }
 599
 600         iwi_release(sc);
 601
 602         IWI_LOCK_DESTROY(&(sc->sc_lock));
 603         IWI_LOCK_DESTROY(&(sc->sc_intrlock));
 604
 605         return 0;
 606 }
 607
 608 static int
 609 iwi_dma_alloc(struct iwi_softc *sc)
 610 {
 611         int i, error;
 612
 613         error = bus_dma_tag_create(NULL, /* parent */
 614                                    1, 0,
 615                                    BUS_SPACE_MAXADDR_32BIT,
 616                                    BUS_SPACE_MAXADDR,
 617                                    NULL, NULL,
 618                                    MAXBSIZE, 128,
 619                                    BUS_SPACE_MAXSIZE_32BIT,
 620                                    BUS_DMA_ALLOCNOW,
 621                                    &sc->iwi_parent_tag );
 622         if (error != 0) {
 623                 device_printf(sc->sc_dev, "could not create parent tag\n");
 624                 goto fail;
 625         }
 626         /*
 627          * Allocate and map Tx ring
 628          */
 629         error = bus_dma_tag_create(sc->iwi_parent_tag, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 630             BUS_SPACE_MAXADDR, NULL, NULL,
 631             sizeof (struct iwi_tx_desc) * IWI_TX_RING_SIZE, 1,
 632             sizeof (struct iwi_tx_desc) * IWI_TX_RING_SIZE,
 633             BUS_DMA_ALLOCNOW, &sc->tx_ring_dmat);
 634         if (error != 0) {
 635                 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
 636                 goto fail;
 637         }
 638
 639         error = bus_dmamem_alloc(sc->tx_ring_dmat,(void **) &sc->tx_desc,
 640             BUS_DMA_WAITOK | BUS_DMA_ZERO, &sc->tx_ring_map);
 641         if (error != 0) {
 642                 device_printf(sc->sc_dev,
 643                     "could not allocate tx ring DMA memory\n");
 644                 goto fail;
 645         }
 646
 647         error = bus_dmamap_load(sc->tx_ring_dmat, sc->tx_ring_map,
 648             sc->tx_desc, sizeof (struct iwi_tx_desc) * IWI_TX_RING_SIZE,
 649             iwi_dma_map_addr, &sc->tx_ring_pa, 0);
 650         if (error != 0) {
 651                 device_printf(sc->sc_dev, "could not load tx ring DMA map\n");
 652                 goto fail;
 653         }
 654
 655         /*
 656          * Allocate and map command ring
 657          */
 658         error = bus_dma_tag_create(sc->iwi_parent_tag, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 659             BUS_SPACE_MAXADDR, NULL, NULL,
 660             sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_SIZE, 1,
 661             sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_SIZE,
 662             BUS_DMA_ALLOCNOW,
 663             &sc->cmd_ring_dmat);
 664         if (error != 0) {
 665                 device_printf(sc->sc_dev,
 666                     "could not create command ring DMA tag\n");
 667                 goto fail;
 668         }
 669
 670         error = bus_dmamem_alloc(sc->cmd_ring_dmat, (void **)&sc->cmd_desc,
 671             BUS_DMA_WAITOK | BUS_DMA_ZERO, &sc->cmd_ring_map);
 672         if (error != 0) {
 673                 device_printf(sc->sc_dev,
 674                     "could not allocate command ring DMA memory\n");
 675                 goto fail;
 676         }
 677
 678         error = bus_dmamap_load(sc->cmd_ring_dmat, sc->cmd_ring_map,
 679             sc->cmd_desc, sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_SIZE,
 680             iwi_dma_map_addr, &sc->cmd_ring_pa, 0);
 681         if (error != 0) {
 682                 device_printf(sc->sc_dev,
 683                     "could not load command ring DMA map\n");
 684                 goto fail;
 685         }
 686
 687         /*
 688          * Allocate Tx buffers DMA maps
 689          */
 690         error = bus_dma_tag_create(sc->iwi_parent_tag, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 691             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IWI_MAX_NSEG, MCLBYTES,
 692             BUS_DMA_ALLOCNOW, &sc->tx_buf_dmat);
 693         if (error != 0) {
 694                 device_printf(sc->sc_dev, "could not create tx buf DMA tag\n");
 695                 goto fail;
 696         }
 697
 698         for (i = 0; i < IWI_TX_RING_SIZE; i++) {
 699                 error = bus_dmamap_create(sc->tx_buf_dmat, 0,
 700                     &sc->tx_buf[i].map);
 701                 if (error != 0) {
 702                         device_printf(sc->sc_dev,
 703                             "could not create tx buf DMA map");
 704                         goto fail;
 705                 }
 706         }
 707
 708         /*
 709          * Allocate and map Rx buffers
 710          */
 711         error = bus_dma_tag_create(sc->iwi_parent_tag, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 712             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES,
 713             BUS_DMA_ALLOCNOW, &sc->rx_buf_dmat);
 714         if (error != 0) {
 715                 device_printf(sc->sc_dev, "could not create rx buf DMA tag\n");
 716                 goto fail;
 717         }
 718
 719         for (i = 0; i < IWI_RX_RING_SIZE; i++) {
 720
 721                 error = bus_dmamap_create(sc->rx_buf_dmat, 0,
 722                     &sc->rx_buf[i].map);
 723                 if (error != 0) {
 724                         device_printf(sc->sc_dev,
 725                             "could not create rx buf DMA map");
 726                         goto fail;
 727                 }
 728
 729                 sc->rx_buf[i].m = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
 730                 if (sc->rx_buf[i].m == NULL) {
 731                         device_printf(sc->sc_dev,
 732                             "could not allocate rx mbuf\n");
 733                         error = ENOMEM;
 734                         goto fail;
 735                 }
 736
 737                 error = bus_dmamap_load(sc->rx_buf_dmat, sc->rx_buf[i].map,
 738                     mtod(sc->rx_buf[i].m, void *), MCLBYTES, iwi_dma_map_addr,
 739                     &sc->rx_buf[i].physaddr, 0);
 740                 if (error != 0) {
 741                         device_printf(sc->sc_dev,
 742                             "could not load rx buf DMA map");
 743                         goto fail;
 744                 }
 745         }
 746
 747         return 0;
 748
 749 fail:   iwi_release(sc);
 750         return error;
 751 }
 752
 753 static void
 754 iwi_release(struct iwi_softc *sc)
 755 {
 756         int i;
 757
 758         if (sc->tx_ring_dmat != NULL) {
 759                 if (sc->tx_desc != NULL) {
 760                         bus_dmamap_sync(sc->tx_ring_dmat, sc->tx_ring_map,
 761                             BUS_DMASYNC_POSTWRITE);
 762                         bus_dmamap_unload(sc->tx_ring_dmat, sc->tx_ring_map);
 763                         bus_dmamem_free(sc->tx_ring_dmat, sc->tx_desc,
 764                             sc->tx_ring_map);
 765                 }
 766                 bus_dma_tag_destroy(sc->tx_ring_dmat);
 767         }
 768
 769         if (sc->cmd_ring_dmat != NULL) {
 770                 if (sc->cmd_desc != NULL) {
 771                         bus_dmamap_sync(sc->cmd_ring_dmat, sc->cmd_ring_map,
 772                             BUS_DMASYNC_POSTWRITE);
 773                         bus_dmamap_unload(sc->cmd_ring_dmat, sc->cmd_ring_map);
 774                         bus_dmamem_free(sc->cmd_ring_dmat, sc->cmd_desc,
 775                             sc->cmd_ring_map);
 776                 }
 777                 bus_dma_tag_destroy(sc->cmd_ring_dmat);
 778         }
 779
 780         if (sc->tx_buf_dmat != NULL) {
 781                 for (i = 0; i < IWI_TX_RING_SIZE; i++) {
 782                         if (sc->tx_buf[i].m != NULL) {
 783                                 bus_dmamap_sync(sc->tx_buf_dmat,
 784                                     sc->tx_buf[i].map, BUS_DMASYNC_POSTWRITE);
 785                                 bus_dmamap_unload(sc->tx_buf_dmat,
 786                                     sc->tx_buf[i].map);
 787                                 m_freem(sc->tx_buf[i].m);
 788                         }
 789                         bus_dmamap_destroy(sc->tx_buf_dmat, sc->tx_buf[i].map);
 790                 }
 791                 bus_dma_tag_destroy(sc->tx_buf_dmat);
 792         }
 793
 794         if (sc->rx_buf_dmat != NULL) {
 795                 for (i = 0; i < IWI_RX_RING_SIZE; i++) {
 796                         if (sc->rx_buf[i].m != NULL) {
 797                                 bus_dmamap_sync(sc->rx_buf_dmat,
 798                                     sc->rx_buf[i].map, BUS_DMASYNC_POSTREAD);
 799                                 bus_dmamap_unload(sc->rx_buf_dmat,
 800                                     sc->rx_buf[i].map);
 801                                 m_freem(sc->rx_buf[i].m);
 802                         }
 803                         bus_dmamap_destroy(sc->rx_buf_dmat, sc->rx_buf[i].map);
 804                 }
 805                 bus_dma_tag_destroy(sc->rx_buf_dmat);
 806         }
 807         if ( sc->iwi_parent_tag != NULL ) {
 808                 bus_dma_tag_destroy(sc->iwi_parent_tag);
 809         }
 810 }
 811
 812 static int
 813 iwi_shutdown(device_t dev)
 814 {
 815         struct iwi_softc *sc = device_get_softc(dev);
 816         IWI_LOCK_INFO;
 817
 818         IWI_LOCK(sc);
 819
 820         iwi_stop(sc);
 821
 822         IWI_UNLOCK(sc);
 823
 824         return 0;
 825 }
 826
 827 static int
 828 iwi_suspend(device_t dev)
 829 {
 830         struct iwi_softc *sc = device_get_softc(dev);
 831
 832         IWI_LOCK_INFO;
 833
 834         IWI_LOCK(sc);
 835
 836         iwi_stop(sc);
 837
 838         IWI_UNLOCK(sc);
 839
 840         return 0;
 841 }
 842
 843 static int
 844 iwi_resume(device_t dev)
 845 {
 846         struct iwi_softc *sc = device_get_softc(dev);
 847         struct ifnet *ifp = &sc->sc_ic.ic_if;
 848         IWI_LOCK_INFO;
 849
 850         IWI_LOCK(sc);
 851
 852         pci_write_config(dev, 0x41, 0, 1);
 853
 854         if (ifp->if_flags & IFF_UP) {
 855                 ifp->if_init(ifp->if_softc);
 856                 if (ifp->if_flags & IFF_RUNNING)
 857                         ifp->if_start(ifp);
 858         }
 859
 860         IWI_UNLOCK(sc);
 861
 862         return 0;
 863 }
 864
 865 static int
 866 iwi_media_change(struct ifnet *ifp)
 867 {
 868         struct iwi_softc *sc = ifp->if_softc;
 869         int error = 0;
 870         IWI_LOCK_INFO;
 871
 872         IWI_LOCK(sc);
 873
 874         error = ieee80211_media_change(ifp);
 875         if (error != ENETRESET) {
 876                 IWI_UNLOCK(sc);
 877                 return error;
 878         }
 879         error = 0; /* clear ENETRESET */
 880
 881         if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)){
 882                 iwi_init(sc);
 883                 error = tsleep( IWI_FW_CMD_ACKED(sc), 0, "iwirun", hz );
 884         }
 885
 886
 887         IWI_UNLOCK(sc);
 888
 889         return error;
 890 }
 891
 892 static void
 893 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 894 {
 895         struct iwi_softc *sc = ifp->if_softc;
 896         struct ieee80211com *ic = &sc->sc_ic;
 897 #define N(a)    (sizeof (a) / sizeof (a[0]))
 898         static const struct {
 899                 u_int32_t       val;
 900                 int             rate;
 901         } rates[] = {
 902                 { IWI_RATE_DS1,      2 },
 903                 { IWI_RATE_DS2,      4 },
 904                 { IWI_RATE_DS5,     11 },
 905                 { IWI_RATE_DS11,    22 },
 906                 { IWI_RATE_OFDM6,   12 },
 907                 { IWI_RATE_OFDM9,   18 },
 908                 { IWI_RATE_OFDM12,  24 },
 909                 { IWI_RATE_OFDM18,  36 },
 910                 { IWI_RATE_OFDM24,  48 },
 911                 { IWI_RATE_OFDM36,  72 },
 912                 { IWI_RATE_OFDM48,  96 },
 913                 { IWI_RATE_OFDM54, 108 },
 914         };
 915         u_int32_t val, i;
 916         int rate;
 917
 918         imr->ifm_status = IFM_AVALID;
 919         imr->ifm_active = IFM_IEEE80211;
 920         if (ic->ic_state == IEEE80211_S_RUN)
 921                 imr->ifm_status |= IFM_ACTIVE;
 922
 923         /* read current transmission rate from adapter */
 924         val = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE);
 925
 926         /* convert rate to 802.11 rate */
 927         for (i = 0; i < N(rates) && rates[i].val != val ; i++);
 928         rate = (i < N(rates)) ? rates[i].rate : 0;
 929
 930         imr->ifm_active |= ieee80211_rate2media(ic, rate, ic->ic_curmode);
 931         switch (ic->ic_opmode) {
 932         case IEEE80211_M_STA:
 933                 break;
 934
 935         case IEEE80211_M_IBSS:
 936                 imr->ifm_active |= IFM_IEEE80211_ADHOC;
 937                 break;
 938
 939         case IEEE80211_M_MONITOR:
 940                 imr->ifm_active |= IFM_IEEE80211_MONITOR;
 941                 break;
 942
 943         case IEEE80211_M_AHDEMO:
 944         case IEEE80211_M_HOSTAP:
 945                 /* should not get there */
 946                 break;
 947         }
 948 #undef N
 949 }
 950
 951 static int
 952 iwi_disassociate( struct iwi_softc *sc  )
 953 {
 954         sc->assoc.type = 2; /* DISASSOCIATE */
 955         return iwi_cmd(sc, IWI_CMD_ASSOCIATE, &sc->assoc, sizeof sc->assoc, 0);
 956 }
 957
 958
 959 static int
 960 iwi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg __unused)
 961 {
 962         struct iwi_softc *sc = ic->ic_softc;
 963
 964         switch (nstate) {
 965         case IEEE80211_S_SCAN:
 966                 if ( sc->flags & IWI_FLAG_ASSOCIATED ) {
 967                         sc->flags &= ~( IWI_FLAG_ASSOCIATED );
 968                         iwi_disassociate(sc);
 969                         (void) tsleep( IWI_FW_DEASSOCIATED(sc),
 970                                         0, "iwisca", hz );
 971
 972                 }
 973                 if ( !(sc->flags & IWI_FLAG_SCANNING) &&
 974                      !(sc->flags & IWI_FLAG_RF_DISABLED) ) {
 975                         iwi_scan(sc);
 976                 }
 977                 break;
 978
 979         case IEEE80211_S_AUTH:
 980                 if ( sc->flags & IWI_FLAG_ASSOCIATED ) {
 981                         sc->flags &= ~( IWI_FLAG_ASSOCIATED );
 982                         iwi_disassociate(sc);
 983                         (void) tsleep( IWI_FW_DEASSOCIATED(sc), 0,
 984                                        "iwiaut", hz );
 985
 986                 }
 987                 if ( iwi_auth_and_assoc(sc) != 0 )
 988                         ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
 989                 break;
 990
 991         case IEEE80211_S_RUN:
 992                 if (sc->flags & IWI_FLAG_SCAN_COMPLETE) {
 993                         sc->flags &= ~(IWI_FLAG_SCAN_COMPLETE);
 994                         if (ic->ic_opmode == IEEE80211_M_IBSS ||
 995                             ic->ic_opmode == IEEE80211_M_MONITOR ) {
 996                                 /*
 997                                  * In IBSS mode, following an end_scan
 998                                  * the ieee80211 stack state machine transitions
 999                                  * straight to 'run' state. This is out of
1000                                  * step with the firmware which requires
1001                                  * an association first. Flip our state from
1002                                  * RUN back to AUTH to allow us to tell the
1003                                  * firmware to associate.
1004                                  */
1005                                 ieee80211_new_state(ic, IEEE80211_S_AUTH, -1);
1006                         }
1007                 }
1008                 break;
1009
1010         case IEEE80211_S_ASSOC:
1011                 break;
1012         case IEEE80211_S_INIT:
1013                 sc->flags &= ~( IWI_FLAG_SCANNING | IWI_FLAG_ASSOCIATED );
1014                 break;
1015         }
1016
1017         ic->ic_state = nstate;
1018         return 0;
1019 }
1020
1021 /*
1022  * Read 16 bits at address 'addr' from the serial EEPROM.
1023  * DON'T PLAY WITH THIS CODE UNLESS YOU KNOW *EXACTLY* WHAT YOU'RE DOING!
1024  */
1025 static u_int16_t
1026 iwi_read_prom_word(struct iwi_softc *sc, u_int8_t addr)
1027 {
1028         u_int32_t tmp;
1029         u_int16_t val;
1030         int n;
1031
1032         /* Clock C once before the first command */
1033         IWI_EEPROM_CTL(sc, 0);
1034         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1035         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1036         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1037
1038         /* Write start bit (1) */
1039         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1040         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1041
1042         /* Write READ opcode (10) */
1043         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1044         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1045         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1046         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1047
1048         /* Write address A7-A0 */
1049         for (n = 7; n >= 0; n--) {
1050                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1051                     (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D));
1052                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1053                     (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C);
1054         }
1055
1056         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1057
1058         /* Read data Q15-Q0 */
1059         val = 0;
1060         for (n = 15; n >= 0; n--) {
1061                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1062                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1063                 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL);
1064                 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n;
1065         }
1066
1067         IWI_EEPROM_CTL(sc, 0);
1068
1069         /* Clear Chip Select and clock C */
1070         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1071         IWI_EEPROM_CTL(sc, 0);
1072         IWI_EEPROM_CTL(sc, IWI_EEPROM_C);
1073
1074         return be16toh(val);
1075 }
1076
1077 /*
1078  * XXX: Hack to set the current channel to the value advertised in beacons or
1079  * probe responses. Only used during AP detection.
1080  */
1081 static void
1082 iwi_fix_channel(struct iwi_softc *sc, struct mbuf *m)
1083 {
1084         struct ieee80211com *ic = &sc->sc_ic;
1085         struct ieee80211_frame *wh;
1086         u_int8_t subtype;
1087         u_int8_t *frm, *efrm;
1088
1089         wh = mtod(m, struct ieee80211_frame *);
1090
1091         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
1092                 return;
1093
1094         subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1095
1096         if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1097             subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1098                 return;
1099
1100         /*
1101          * Cache station entries from beacons and probes.
1102          */
1103         if ( iwi_find_station(sc, wh->i_addr2) == 0xff )
1104                 iwi_cache_station(sc, wh->i_addr2);
1105
1106         frm = (u_int8_t *)(wh + 1);
1107         efrm = mtod(m, u_int8_t *) + m->m_len;
1108
1109         frm += 12;      /* skip tstamp, bintval and capinfo fields */
1110 #if 0
1111         { /* XXX - debugging code */
1112                 u_int8_t *ptr;
1113                 u_int32_t cnt;
1114                 printf("Frame -->");
1115                 for ( ptr = frm, cnt = 0 ; ptr < efrm ; ptr++, cnt++ ) {
1116                         if ( cnt % 8 == 0 )
1117                                 printf("\n");
1118                         printf("0x%-2.2x ", *ptr);
1119                 }
1120                 printf("<-- End Frame\n");
1121         }
1122 #endif
1123
1124         while (frm < efrm) {
1125                 if (*frm == IEEE80211_ELEMID_DSPARMS)
1126 #if IEEE80211_CHAN_MAX < 255
1127                 if (frm[2] <= IEEE80211_CHAN_MAX)
1128 #endif
1129                         ic->ic_bss->ni_chan = &ic->ic_channels[frm[2]];
1130
1131                 frm += frm[1] + 2; /* advance to the next tag */
1132         }
1133 }
1134
1135 static void
1136 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_buf *buf, int i,
1137     struct iwi_frame *frame)
1138 {
1139         struct ieee80211com *ic = &sc->sc_ic;
1140         struct ifnet *ifp = &ic->ic_if;
1141         struct mbuf *m;
1142         struct ieee80211_frame *wh;
1143         struct ieee80211_node *ni;
1144         int error;
1145
1146         DPRINTFN(5, ("RX!DATA!%u!%u!%u\n", le16toh(frame->len), frame->chan,
1147             frame->rssi_dbm));
1148
1149         if (le16toh(frame->len) < sizeof (struct ieee80211_frame_min) ||
1150             le16toh(frame->len) > MCLBYTES) {
1151                 device_printf(sc->sc_dev, "bad frame length\n");
1152                 return;
1153         }
1154
1155         bus_dmamap_unload(sc->rx_buf_dmat, buf->map);
1156
1157         /* Finalize mbuf */
1158         m = buf->m;
1159         m->m_pkthdr.rcvif = ifp;
1160         m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) +
1161             sizeof (struct iwi_frame) + le16toh(frame->len);
1162
1163         m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame));
1164
1165         wh = mtod(m, struct ieee80211_frame *);
1166         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1167                 /*
1168                  * Hardware decrypts the frame itself but leaves the WEP bit
1169                  * set in the 802.11 header and don't remove the iv and crc
1170                  * fields
1171                  */
1172                 wh->i_fc[1] &= ~IEEE80211_FC1_WEP;
1173                 bcopy(wh, (char *)wh + IEEE80211_WEP_IVLEN +
1174                     IEEE80211_WEP_KIDLEN, sizeof (struct ieee80211_frame));
1175                 m_adj(m, IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN);
1176                 m_adj(m, -IEEE80211_WEP_CRCLEN);
1177                 wh = mtod(m, struct ieee80211_frame *);
1178         }
1179
1180         if (sc->sc_drvbpf != NULL) {
1181                 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap;
1182
1183                 tap->wr_flags = 0;
1184                 tap->wr_rate = frame->rate;
1185                 tap->wr_chan_freq =
1186                     htole16(ic->ic_channels[frame->chan].ic_freq);
1187                 tap->wr_chan_flags =
1188                     htole16(ic->ic_channels[frame->chan].ic_flags);
1189                 tap->wr_antsignal = frame->signal;
1190                 tap->wr_antnoise = frame->noise;
1191                 tap->wr_antenna = frame->antenna;
1192
1193                 bpf_ptap(sc->sc_drvbpf, m, tap, sc->sc_rxtap_len);
1194         }
1195
1196         if (ic->ic_state == IEEE80211_S_SCAN)
1197                 iwi_fix_channel(sc, m);
1198
1199         if (ic->ic_opmode != IEEE80211_M_STA) {
1200                 ni = ieee80211_find_node(ic, wh->i_addr2);
1201                 if (ni == NULL)
1202                         ni = ieee80211_ref_node(ic->ic_bss);
1203         } else
1204                 ni = ieee80211_ref_node(ic->ic_bss);
1205
1206         /* Send the frame to the upper layer */
1207         ieee80211_input(ifp, m, ni, IWI_RSSIDBM2RAW(frame->rssi_dbm), 0);
1208
1209         if (ni == ic->ic_bss)
1210                 ieee80211_unref_node(&ni);
1211         else
1212                 ieee80211_free_node(ic, ni);
1213
1214         buf->m = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
1215         if (buf->m == NULL) {
1216                 device_printf(sc->sc_dev, "could not allocate rx mbuf\n");
1217                 return;
1218         }
1219
1220         error = bus_dmamap_load(sc->rx_buf_dmat, buf->map, mtod(buf->m, void *),
1221             MCLBYTES, iwi_dma_map_addr, &buf->physaddr, 0);
1222         if (error != 0) {
1223                 device_printf(sc->sc_dev, "could not load rx buf DMA map\n");
1224                 m_freem(buf->m);
1225                 buf->m = NULL;
1226                 return;
1227         }
1228
1229         CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, buf->physaddr);
1230 }
1231
1232 static void
1233 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif)
1234 {
1235         struct ieee80211com *ic = &sc->sc_ic;
1236         struct ifnet *ifp = &ic->ic_if;
1237         struct iwi_notif_scan_channel *chan;
1238         struct iwi_notif_scan_complete *scan;
1239         struct iwi_notif_authentication *auth;
1240         struct iwi_notif_association *assoc;
1241
1242         switch (notif->type) {
1243         case IWI_NOTIF_TYPE_SCAN_CHANNEL:
1244                 chan = (struct iwi_notif_scan_channel *)(notif + 1);
1245
1246                 DPRINTFN(2, ("Scan channel (%u)\n", chan->nchan));
1247                 break;
1248
1249         case IWI_NOTIF_TYPE_SCAN_COMPLETE:
1250                 scan = (struct iwi_notif_scan_complete *)(notif + 1);
1251
1252                 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan,
1253                     scan->status));
1254
1255                 sc->flags &= ~(IWI_FLAG_SCANNING);
1256                 sc->flags |= IWI_FLAG_SCAN_COMPLETE;
1257
1258                 if ( sc->flags & IWI_FLAG_SCAN_ABORT ) {
1259                         sc->flags &= ~(IWI_FLAG_SCAN_ABORT);
1260                         wakeup(IWI_FW_SCAN_COMPLETED(sc));
1261                 } else {
1262                         ieee80211_end_scan(ifp);
1263                         wakeup(IWI_FW_SCAN_COMPLETED(sc));
1264                 }
1265                 break;
1266
1267         case IWI_NOTIF_TYPE_AUTHENTICATION:
1268                 auth = (struct iwi_notif_authentication *)(notif + 1);
1269
1270                 DPRINTFN(2, ("Authentication (%u)\n", auth->state));
1271
1272                 switch (auth->state) {
1273                 case IWI_AUTHENTICATED:
1274                         ieee80211_new_state(ic, IEEE80211_S_ASSOC, -1);
1275                         break;
1276
1277                 case IWI_DEAUTHENTICATED:
1278                         ieee80211_begin_scan(ifp);/* not necessary */
1279                         break;
1280
1281                 default:
1282                         device_printf(sc->sc_dev,
1283                             "unknown authentication state %u\n", auth->state);
1284                 }
1285                 break;
1286
1287         case IWI_NOTIF_TYPE_ASSOCIATION:
1288                 assoc = (struct iwi_notif_association *)(notif + 1);
1289
1290                 DPRINTFN(2, ("Association (%u, %u)\n", assoc->state,
1291                     assoc->status));
1292
1293                 switch (assoc->state) {
1294                 case IWI_ASSOCIATED:
1295                         sc->flags |= IWI_FLAG_ASSOCIATED;
1296                         ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
1297                         break;
1298
1299                 case IWI_DEASSOCIATED:
1300                         sc->flags &= ~(IWI_FLAG_ASSOCIATED);
1301                         wakeup(IWI_FW_DEASSOCIATED(sc));
1302                         ieee80211_begin_scan(ifp);/* probably not necessary */
1303                         break;
1304
1305                 default:
1306                         device_printf(sc->sc_dev,
1307                             "unknown association state %u\n", assoc->state);
1308                 }
1309                 break;
1310
1311         case IWI_NOTIF_TYPE_CALIBRATION:
1312                 DPRINTFN(5, ("Notification calib (%u)\n", notif->type));
1313                 break;
1314         case IWI_NOTIF_TYPE_BEACON:
1315                 DPRINTFN(5, ("Notification beacon (%u)\n", notif->type));
1316                 break;
1317         case IWI_NOTIF_TYPE_NOISE:
1318                 DPRINTFN(5, ("Notification noise (%u)\n", notif->type));
1319                 break;
1320
1321         default:
1322                 device_printf(sc->sc_dev, "unknown notification type %u\n",
1323                     notif->type);
1324         }
1325 }
1326
1327 static void
1328 iwi_rx_intr(struct iwi_softc *sc)
1329 {
1330         struct iwi_rx_buf *buf;
1331         struct iwi_hdr *hdr;
1332         u_int32_t r, i;
1333
1334         r = CSR_READ_4(sc, IWI_CSR_RX_READ_INDEX);
1335
1336         for (i = (sc->rx_cur + 1) % IWI_RX_RING_SIZE; i != r;
1337              i = (i + 1) % IWI_RX_RING_SIZE) {
1338
1339                 buf = &sc->rx_buf[i];
1340
1341                 bus_dmamap_sync(sc->rx_buf_dmat, buf->map,
1342                     BUS_DMASYNC_POSTREAD);
1343
1344                 hdr = mtod(buf->m, struct iwi_hdr *);
1345
1346                 switch (hdr->type) {
1347                 case IWI_HDR_TYPE_FRAME:
1348                         iwi_frame_intr(sc, buf, i,
1349                             (struct iwi_frame *)(hdr + 1));
1350                         break;
1351
1352                 case IWI_HDR_TYPE_NOTIF:
1353                         iwi_notification_intr(sc,
1354                             (struct iwi_notif *)(hdr + 1));
1355                         break;
1356
1357                 default:
1358                         device_printf(sc->sc_dev, "unknown hdr type %u\n",
1359                             hdr->type);
1360                 }
1361         }
1362
1363         /* Tell the firmware what we have processed */
1364         sc->rx_cur = (r == 0) ? IWI_RX_RING_SIZE - 1 : r - 1;
1365         CSR_WRITE_4(sc, IWI_CSR_RX_WRITE_INDEX, sc->rx_cur);
1366 }
1367
1368 static void
1369 iwi_tx_intr(struct iwi_softc *sc)
1370 {
1371         struct ieee80211com *ic = &sc->sc_ic;
1372         struct ifnet *ifp = &ic->ic_if;
1373         struct iwi_tx_buf *buf;
1374         u_int32_t r, i;
1375
1376         r = CSR_READ_4(sc, IWI_CSR_TX1_READ_INDEX);
1377 #if  notyet
1378         bus_dmamap_sync(sc->tx_ring_dmat, sc->tx_ring_map, BUS_DMASYNC_POSTWRITE);
1379 #endif
1380
1381         for (i = (sc->tx_old + 1) % IWI_TX_RING_SIZE; i != r;
1382              i = (i + 1) % IWI_TX_RING_SIZE) {
1383
1384                 buf = &sc->tx_buf[i];
1385
1386                 bus_dmamap_sync(sc->tx_buf_dmat, buf->map,
1387                     BUS_DMASYNC_POSTWRITE);
1388                 bus_dmamap_unload(sc->tx_buf_dmat, buf->map);
1389                 m_freem(buf->m);
1390                 buf->m = NULL;
1391                 if (buf->ni != ic->ic_bss)
1392                         ieee80211_free_node(ic, buf->ni);
1393                 buf->ni = NULL;
1394
1395                 sc->tx_queued--;
1396
1397                 /* kill watchdog timer */
1398                 sc->sc_tx_timer = 0;
1399         }
1400
1401         /* Remember what the firmware has processed */
1402         sc->tx_old = (r == 0) ? IWI_TX_RING_SIZE - 1 : r - 1;
1403
1404         /* Call start() since some buffer descriptors have been released */
1405         ifp->if_flags &= ~IFF_OACTIVE;
1406         (*ifp->if_start)(ifp);
1407 }
1408
1409 static void
1410 iwi_intr(void *arg)
1411 {
1412         struct iwi_softc *sc = arg;
1413         struct ieee80211com *ic = &sc->sc_ic;
1414         struct ifnet *ifp = &ic->ic_if;
1415         u_int32_t r;
1416         IWI_LOCK_INFO;
1417         IWI_IPLLOCK_INFO;
1418
1419         IWI_IPLLOCK(sc);
1420
1421         if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) {
1422                 IWI_IPLUNLOCK(sc);
1423                 return;
1424         }
1425
1426         /* Disable interrupts */
1427         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0);
1428
1429         DPRINTFN(8, ("INTR!0x%08x\n", r));
1430
1431         sc->flags &= ~(IWI_FLAG_RF_DISABLED);
1432
1433         if ( r & IWI_INTR_FATAL_ERROR ) {
1434                 if ( !(sc->flags & (IWI_FLAG_RESET | IWI_FLAG_EXIT))) {
1435                         sc->flags |= IWI_FLAG_RESET;
1436                         wakeup(IWI_FW_WAKE_MONITOR(sc));
1437                 }
1438         }
1439
1440         if (r & IWI_INTR_PARITY_ERROR) {
1441                         device_printf(sc->sc_dev, "fatal error\n");
1442                         sc->sc_ic.ic_if.if_flags &= ~IFF_UP;
1443                         IWI_LOCK(sc);
1444                         iwi_stop(sc);
1445                         IWI_UNLOCK(sc);
1446         }
1447
1448         if (r & IWI_INTR_FW_INITED) {
1449                 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR)))
1450                         wakeup(IWI_FW_INITIALIZED(sc));
1451         }
1452
1453         if (r & IWI_INTR_RADIO_OFF) {
1454                 DPRINTF(("radio transmitter off\n"));
1455                 sc->sc_ic.ic_if.if_flags &= ~IFF_UP;
1456                 IWI_LOCK(sc);
1457                 iwi_stop(sc);
1458                 IWI_UNLOCK(sc);
1459                 sc->flags |= IWI_FLAG_RF_DISABLED;
1460         }
1461
1462         if (r & IWI_INTR_RX_TRANSFER)
1463                 iwi_rx_intr(sc);
1464
1465         if (r & IWI_INTR_CMD_TRANSFER)
1466                 wakeup(IWI_FW_CMD_ACKED(sc));
1467
1468         if (r & IWI_INTR_TX1_TRANSFER)
1469                 iwi_tx_intr(sc);
1470
1471         if (r & ~(IWI_HANDLED_INTR_MASK))
1472                 device_printf(sc->sc_dev,
1473                               "unhandled interrupt(s) INTR!0x%08x\n",
1474                               r & ~(IWI_HANDLED_INTR_MASK));
1475
1476         /* Acknowledge interrupts */
1477         CSR_WRITE_4(sc, IWI_CSR_INTR, r);
1478
1479         /* Re-enable interrupts */
1480         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK);
1481
1482         IWI_IPLUNLOCK(sc);
1483
1484         if ((ifp->if_flags & IFF_RUNNING) && !ifq_is_empty(&ifp->if_snd))
1485                 iwi_start(ifp);
1486 }
1487
1488 struct iwi_dma_mapping {
1489         bus_dma_segment_t segs[IWI_MAX_NSEG];
1490         int nseg;
1491         bus_size_t mapsize;
1492 };
1493
1494 static void
1495 iwi_dma_map_buf(void *arg, bus_dma_segment_t *segs, int nseg,
1496     bus_size_t mapsize, int error)
1497 {
1498         struct iwi_dma_mapping *map = arg;
1499
1500         if (error != 0)
1501                 return;
1502
1503         KASSERT(nseg <= IWI_MAX_NSEG, ("too many DMA segments %d", nseg));
1504
1505         bcopy(segs, map->segs, nseg * sizeof (bus_dma_segment_t));
1506         map->nseg = nseg;
1507         map->mapsize = mapsize;
1508 }
1509
1510 static void
1511 iwi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg __unused, int error)
1512 {
1513         if (error != 0) {
1514                 printf("iwi: fatal DMA mapping error !!!\n");
1515                 return;
1516         }
1517
1518         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1519
1520         *(bus_addr_t *)arg = segs[0].ds_addr;
1521 }
1522
1523 static int
1524 iwi_cmd(struct iwi_softc *sc, u_int8_t type, void *data, u_int8_t len,
1525     int async)
1526 {
1527         struct iwi_cmd_desc *desc;
1528
1529         DPRINTFN(2, ("TX!CMD!%u!%u\n", type, len));
1530
1531         desc = &sc->cmd_desc[sc->cmd_cur];
1532         desc->hdr.type = IWI_HDR_TYPE_COMMAND;
1533         desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1534         desc->type = type;
1535         desc->len = len;
1536         bcopy(data, desc->data, len);
1537
1538         bus_dmamap_sync(sc->cmd_ring_dmat, sc->cmd_ring_map,
1539             BUS_DMASYNC_PREWRITE);
1540
1541         sc->cmd_cur = (sc->cmd_cur + 1) % IWI_CMD_RING_SIZE;
1542         CSR_WRITE_4(sc, IWI_CSR_CMD_WRITE_INDEX, sc->cmd_cur);
1543
1544         return async ? 0 : tsleep( IWI_FW_CMD_ACKED(sc), 0, "iwicmd", hz);
1545 }
1546
1547 static int
1548 iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni)
1549 {
1550         struct iwi_softc *sc = ifp->if_softc;
1551         struct ieee80211com *ic = &sc->sc_ic;
1552         struct ieee80211_frame *wh;
1553         struct iwi_tx_buf *buf;
1554         struct iwi_tx_desc *desc;
1555         struct iwi_dma_mapping map;
1556         struct mbuf *mnew;
1557         u_int32_t id = 0;
1558         int error, i;
1559         IWI_IPLLOCK_INFO; /* XXX still need old ipl locking mech. here */
1560         IWI_IPLLOCK(sc);
1561
1562         if (sc->sc_drvbpf != NULL) {
1563                 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap;
1564
1565                 tap->wt_flags = 0;
1566                 tap->wt_chan_freq = htole16(ic->ic_bss->ni_chan->ic_freq);
1567                 tap->wt_chan_flags = htole16(ic->ic_bss->ni_chan->ic_flags);
1568
1569                 bpf_ptap(sc->sc_drvbpf, m0, tap, sc->sc_txtap_len);
1570         }
1571
1572         buf = &sc->tx_buf[sc->tx_cur];
1573         desc = &sc->tx_desc[sc->tx_cur];
1574
1575         wh = mtod(m0, struct ieee80211_frame *);
1576
1577         if ( (id = iwi_find_station( sc, wh->i_addr1 ) ) == 0xff )
1578                 id = iwi_cache_station( sc, wh->i_addr1 );
1579
1580         bzero( desc, sizeof (struct iwi_tx_desc) );
1581         desc->station_number = id;
1582
1583         /* trim IEEE802.11 header */
1584         m_adj(m0, sizeof (struct ieee80211_frame));
1585
1586         error = bus_dmamap_load_mbuf(sc->tx_buf_dmat, buf->map, m0,
1587             iwi_dma_map_buf, &map, BUS_DMA_NOWAIT);
1588         if (error != 0 && error != EFBIG) {
1589                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1590                     error);
1591                 m_freem(m0);
1592                 IWI_IPLUNLOCK(sc);
1593                 return error;
1594         }
1595         if (error != 0) {
1596                 mnew = m_defrag(m0, MB_DONTWAIT);
1597                 if (mnew == NULL) {
1598                         device_printf(sc->sc_dev,
1599                             "could not defragment mbuf\n");
1600                         m_freem(m0);
1601                         IWI_IPLUNLOCK(sc);
1602                         return ENOBUFS;
1603                 }
1604                 m0 = mnew;
1605
1606                 error = bus_dmamap_load_mbuf(sc->tx_buf_dmat, buf->map, m0,
1607                     iwi_dma_map_buf, &map, BUS_DMA_NOWAIT);
1608                 if (error != 0) {
1609                         device_printf(sc->sc_dev,
1610                             "could not map mbuf (error %d)\n", error);
1611                         m_freem(m0);
1612                         IWI_IPLUNLOCK(sc);
1613                         return error;
1614                 }
1615         }
1616
1617         buf->m = m0;
1618         buf->ni = ni;
1619
1620         desc->hdr.type = IWI_HDR_TYPE_DATA;
1621         desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1622         desc->cmd = IWI_DATA_CMD_TX;
1623         desc->len = htole16(m0->m_pkthdr.len);
1624         desc->flags = 0;
1625         if (ic->ic_opmode == IEEE80211_M_IBSS) {
1626                 if (!IEEE80211_IS_MULTICAST(wh->i_addr1))
1627                         desc->flags |= IWI_DATA_FLAG_NEED_ACK;
1628         } else if (!IEEE80211_IS_MULTICAST(wh->i_addr3))
1629                 desc->flags |= IWI_DATA_FLAG_NEED_ACK;
1630
1631         if (ic->ic_flags & IEEE80211_F_WEPON) {
1632                 wh->i_fc[1] |= IEEE80211_FC1_WEP;
1633                 desc->wep_txkey = ic->ic_wep_txkey;
1634         } else
1635                 desc->flags |= IWI_DATA_FLAG_NO_WEP;
1636
1637         if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
1638                 desc->flags |= IWI_DATA_FLAG_SHPREAMBLE;
1639
1640         bcopy(wh, &desc->wh, sizeof (struct ieee80211_frame));
1641         desc->nseg = htole32(map.nseg);
1642         for (i = 0; i < map.nseg; i++) {
1643                 desc->seg_addr[i] = htole32(map.segs[i].ds_addr);
1644                 desc->seg_len[i]  = htole32(map.segs[i].ds_len);
1645         }
1646
1647         bus_dmamap_sync(sc->tx_buf_dmat, buf->map, BUS_DMASYNC_PREWRITE);
1648         bus_dmamap_sync(sc->tx_ring_dmat, sc->tx_ring_map,
1649             BUS_DMASYNC_PREWRITE);
1650
1651         DPRINTFN(5, ("TX!DATA!%u!%u\n", desc->len, desc->nseg));
1652
1653         /* Inform firmware about this new packet */
1654         sc->tx_queued++;
1655         sc->tx_cur = (sc->tx_cur + 1) % IWI_TX_RING_SIZE;
1656         CSR_WRITE_4(sc, IWI_CSR_TX1_WRITE_INDEX, sc->tx_cur);
1657
1658         IWI_IPLUNLOCK(sc);
1659         return 0;
1660 }
1661
1662 static void
1663 iwi_start(struct ifnet *ifp)
1664 {
1665         struct iwi_softc *sc = ifp->if_softc;
1666         struct ieee80211com *ic = &sc->sc_ic;
1667         struct mbuf *m0;
1668         struct ieee80211_node *ni;
1669
1670         if (ic->ic_state != IEEE80211_S_RUN) {
1671                 return;
1672         }
1673
1674         for (;;) {
1675                 m0 = ifq_poll(&ifp->if_snd);
1676                 if (m0 == NULL)
1677                         break;
1678
1679                 if (sc->tx_queued >= IWI_TX_RING_SIZE - 4) {
1680                         ifp->if_flags |= IFF_OACTIVE;
1681                         break;
1682                 }
1683
1684                 m0 = ifq_dequeue(&ifp->if_snd);
1685
1686                 BPF_MTAP(ifp, m0);
1687
1688                 m0 = ieee80211_encap(ifp, m0, &ni);
1689                 if (m0 == NULL)
1690                         continue;
1691
1692                 if (ic->ic_rawbpf != NULL)
1693                         bpf_mtap(ic->ic_rawbpf, m0);
1694
1695                 if (iwi_tx_start(ifp, m0, ni) != 0) {
1696                         if (ni != NULL && ni != ic->ic_bss)
1697                                 ieee80211_free_node(ic, ni);
1698                         break;
1699                 }
1700
1701                 /* start watchdog timer */
1702                 sc->sc_tx_timer = 5;
1703                 ifp->if_timer = 1;
1704         }
1705
1706 }
1707
1708 static void
1709 iwi_watchdog(struct ifnet *ifp)
1710 {
1711         struct iwi_softc *sc = ifp->if_softc;
1712
1713         ifp->if_timer = 0;
1714
1715         if (sc->sc_tx_timer > 0) {
1716                 if (--sc->sc_tx_timer == 0) {
1717                         if_printf(ifp, "device timeout\n");
1718                         wakeup(IWI_FW_WAKE_MONITOR(sc));
1719                         return;
1720                 }
1721                 ifp->if_timer = 1;
1722         }
1723
1724         ieee80211_watchdog(ifp);
1725 }
1726
1727
1728 static int
1729 iwi_wi_ioctl_get(struct ifnet *ifp, caddr_t data)
1730 {
1731         struct wi_req           wreq;
1732         struct ifreq            *ifr;
1733         struct iwi_softc        *sc;
1734         int                     error;
1735
1736         sc = ifp->if_softc;
1737         ifr = (struct ifreq *)data;
1738         error = copyin(ifr->ifr_data, &wreq, sizeof(wreq));
1739         if (error)
1740                 return (error);
1741
1742         switch (wreq.wi_type) {
1743         case WI_RID_READ_APS:
1744                 ieee80211_begin_scan(ifp);
1745                 (void) tsleep(IWI_FW_SCAN_COMPLETED(sc),
1746                         PCATCH, "ssidscan", hz * 2);
1747                 ieee80211_end_scan(ifp);
1748                 break;
1749         default:
1750                 error = ENOTTY;
1751                 break;
1752         }
1753         return (error);
1754 }
1755
1756
1757
1758
1759 static int
1760 iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
1761 {
1762         struct iwi_softc *sc = ifp->if_softc;
1763         struct ifreq *ifr;
1764         struct ieee80211req *ireq;
1765         struct ifaddr *ifa;
1766         int error = 0;
1767         IWI_LOCK_INFO;
1768
1769         IWI_LOCK(sc);
1770
1771         switch (cmd) {
1772        case SIOCSIFADDR:
1773                 /*
1774                  * Handle this here instead of in net80211_ioctl.c
1775                  * so that we can lock (IWI_LOCK) the call to
1776                  * iwi_init().
1777                  */
1778                 ifa = (struct ifaddr *) data;
1779                 switch (ifa->ifa_addr->sa_family) {
1780 #ifdef INET
1781                 case AF_INET:
1782                         if ((ifp->if_flags & IFF_UP) == 0) {
1783                                 ifp->if_flags |= IFF_UP;
1784                                 ifp->if_init(ifp->if_softc);
1785                         }
1786                         arp_ifinit(ifp, ifa);
1787                         break;
1788 #endif
1789 #ifdef IPX
1790 #warning "IPX support has not been tested"
1791                 /*
1792                  * XXX - This code is probably wrong,
1793                  *       but has been copied many times.
1794                  */
1795                 case AF_IPX: {
1796                         struct ipx_addr *ina = &(IA_SIPX(ifa)->sipx_addr);
1797                         struct arpcom *ac = (struct arpcom *)ifp;
1798
1799                         if (ipx_nullhost(*ina))
1800                                 ina->x_host = *(union ipx_host *) ac->ac_enaddr;
1801                         else
1802                                 bcopy((caddr_t) ina->x_host.c_host,
1803                                       (caddr_t) ac->ac_enaddr,
1804                                       sizeof(ac->ac_enaddr));
1805                         /* fall thru... */
1806                 }
1807 #endif
1808                 default:
1809                         if ((ifp->if_flags & IFF_UP) == 0) {
1810                                 ifp->if_flags |= IFF_UP;
1811                                 ifp->if_init(ifp->if_softc);
1812                         }
1813                         break;
1814                 }
1815                 break;
1816
1817         case SIOCSIFFLAGS:
1818                 if (ifp->if_flags & IFF_UP) {
1819                         if (!(ifp->if_flags & IFF_RUNNING)) {
1820                                 iwi_init(sc);
1821                                 error = tsleep(IWI_FW_CMD_ACKED(sc), 0,
1822                                                  "iwirun", hz);
1823                         }
1824                 } else {
1825                         if (ifp->if_flags & IFF_RUNNING) {
1826                                 iwi_stop(sc);
1827                         }
1828                 }
1829                 break;
1830
1831         case SIOCSLOADFW:
1832         case SIOCSLOADIBSSFW:
1833                 /* only super-user can do that! */
1834                 if ((error = suser(curthread)) != 0)
1835                         break;
1836
1837                 ifr = (struct ifreq *)data;
1838                 error = iwi_cache_firmware(sc, ifr->ifr_data,
1839                                 (cmd == SIOCSLOADIBSSFW) ? 1 : 0);
1840                 break;
1841
1842         case SIOCSKILLFW:
1843                 /* only super-user can do that! */
1844                 if ((error = suser(curthread)) != 0)
1845                         break;
1846
1847                 ifp->if_flags &= ~IFF_UP;
1848                 iwi_stop(sc);
1849                 iwi_free_firmware(sc);
1850                 break;
1851
1852         case SIOCG80211:
1853                 ireq = (struct ieee80211req *)data;
1854                 switch (ireq->i_type) {
1855                 case IEEE80211_IOC_AUTHMODE:
1856                         ireq->i_val = sc->authmode;
1857                         break;
1858
1859                 default:
1860                         error = ieee80211_ioctl(ifp, cmd, data, cr);
1861                 }
1862                 break;
1863
1864         case SIOCS80211:
1865                 /* only super-user can do that! */
1866                 if ((error = suser(curthread)) != 0)
1867                         break;
1868
1869                 ireq = (struct ieee80211req *)data;
1870                 switch (ireq->i_type) {
1871                 case IEEE80211_IOC_AUTHMODE:
1872                         sc->authmode = ireq->i_val;
1873                         break;
1874
1875                 default:
1876                         error = ieee80211_ioctl(ifp, cmd, data, cr);
1877                 }
1878                 break;
1879         case SIOCGIFGENERIC:
1880                 if (sc->flags & IWI_FLAG_FW_INITED) {
1881                         error = iwi_wi_ioctl_get(ifp, data);
1882                         if (! error)
1883                                 error = ieee80211_ioctl(ifp, cmd, data, cr);
1884                 } else
1885                         error = ENOTTY;
1886                 if (error != ENOTTY)
1887                         break;
1888
1889         default:
1890                 error = ieee80211_ioctl(ifp, cmd, data, cr);
1891         }
1892
1893         if (error == ENETRESET) {
1894                 error = 0;
1895                 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
1896                     (IFF_UP | IFF_RUNNING)) {
1897                         iwi_init(sc);
1898                         error = tsleep(IWI_FW_CMD_ACKED(sc), 0, "iwirun", hz);
1899                 }
1900         }
1901
1902         IWI_UNLOCK(sc);
1903
1904         return error;
1905 }
1906
1907 static int
1908 iwi_abort_scan( struct iwi_softc *sc  )
1909 {
1910         sc->flags |= IWI_FLAG_SCAN_ABORT;
1911         return iwi_cmd(sc, IWI_CMD_SCAN_ABORT, NULL, 0, 1);
1912 }
1913
1914 static void
1915 iwi_stop_master(struct iwi_softc *sc)
1916 {
1917         int ntries;
1918
1919         /*
1920          * If the master is busy scanning, we will occasionally
1921          * timeout waiting for it (the master) to stop. Make the
1922          * 'stopping' process more robust by ceasing all scans
1923          * prior to asking for the stop.
1924          */
1925         if ( ( sc->flags & IWI_FLAG_SCANNING ) &&
1926              !( sc->flags & IWI_FLAG_RF_DISABLED ) ) {
1927                 iwi_abort_scan(sc);
1928                 if (( sc->flags & IWI_FLAG_SCAN_ABORT ) &&
1929                     !( sc->flags & IWI_FLAG_RF_DISABLED )) {
1930                         (void) tsleep(IWI_FW_SCAN_COMPLETED(sc), 0,
1931                                          "iwiabr", hz);
1932                 }
1933         }
1934         /* Disable interrupts */
1935
1936         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0);
1937
1938         CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER);
1939         for (ntries = 0; ntries < 5; ntries++) {
1940                 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
1941                         break;
1942                 DELAY(10);
1943         }
1944         if (ntries == 5 && sc->debug_level > 0)
1945                 device_printf(sc->sc_dev, "timeout waiting for master\n");
1946
1947         CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) |
1948             IWI_RST_PRINCETON_RESET);
1949
1950         sc->flags &= ~IWI_FLAG_FW_INITED;
1951 }
1952
1953 static int
1954 iwi_reset(struct iwi_softc *sc)
1955 {
1956         int i, ntries;
1957
1958         iwi_stop_master(sc);
1959
1960         /* Move adapter to D0 state */
1961         CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) |
1962             IWI_CTL_INIT);
1963
1964         /* Initialize Phase-Locked Level  (PLL) */
1965         CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST);
1966
1967         /* Wait for clock stabilization */
1968         for (ntries = 0; ntries < 1000; ntries++) {
1969                 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY)
1970                         break;
1971                 DELAY(200);
1972         }
1973         if (ntries == 1000) {
1974                 return EIO;
1975         }
1976
1977         CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) |
1978             IWI_RST_SW_RESET);
1979
1980         DELAY(10);
1981
1982         CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) |
1983             IWI_CTL_INIT);
1984
1985
1986         /* Clear NIC memory */
1987         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0);
1988
1989         for (i = 0; i < 0xc000; i++) {
1990                 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
1991         }
1992
1993         sc->num_stations = 0;
1994         return 0;
1995 }
1996
1997 static int
1998 iwi_load_ucode(struct iwi_softc *sc, void *uc, int size)
1999 {
2000         u_int16_t *w;
2001         int ntries, i;
2002
2003         CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) |
2004             IWI_RST_STOP_MASTER);
2005         for (ntries = 0; ntries < 5; ntries++) {
2006                 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2007                         break;
2008                 DELAY(10);
2009         }
2010         if (ntries == 5) {
2011                 device_printf(sc->sc_dev, "timeout waiting for master\n");
2012                 return EIO;
2013         }
2014
2015         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
2016         DELAY(5000);
2017         CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) &
2018             ~IWI_RST_PRINCETON_RESET);
2019         DELAY(5000);
2020         MEM_WRITE_4(sc, 0x3000e0, 0);
2021         DELAY(1000);
2022         MEM_WRITE_4(sc, 0x300004, 1);
2023         DELAY(1000);
2024         MEM_WRITE_4(sc, 0x300004, 0);
2025         DELAY(1000);
2026         MEM_WRITE_1(sc, 0x200000, 0x00);
2027         MEM_WRITE_1(sc, 0x200000, 0x40);
2028         DELAY(1000);
2029
2030         /* Adapter is buggy, we must set the address for each word */
2031         for (w = uc; size > 0; w++, size -= 2)
2032                 MEM_WRITE_2(sc, 0x200010, *w);
2033
2034         MEM_WRITE_1(sc, 0x200000, 0x00);
2035         MEM_WRITE_1(sc, 0x200000, 0x80);
2036
2037         /* Wait until we get a response in the uc queue */
2038         for (ntries = 0; ntries < 100; ntries++) {
2039                 if (MEM_READ_1(sc, 0x200000) & 1)
2040                         break;
2041                 DELAY(100);
2042         }
2043         if (ntries == 100) {
2044                 device_printf(sc->sc_dev,
2045                     "timeout waiting for ucode to initialize\n");
2046                 return EIO;
2047         }
2048
2049         /* Empty the uc queue or the firmware will not initialize properly */
2050         for (i = 0; i < 7; i++)
2051                 MEM_READ_4(sc, 0x200004);
2052
2053         MEM_WRITE_1(sc, 0x200000, 0x00);
2054
2055         return 0;
2056 }
2057
2058 /* macro to handle unaligned little endian data in firmware image */
2059 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2060 static int
2061 iwi_load_firmware(struct iwi_softc *sc, void *fw, int size)
2062 {
2063         bus_dma_tag_t dmat;
2064         bus_dmamap_t map;
2065         bus_addr_t physaddr;
2066         void *virtaddr;
2067         u_char *p, *end;
2068         u_int32_t sentinel, ctl, src, dst, sum, len, mlen;
2069         int ntries, error = 0;
2070
2071         sc->flags &= ~(IWI_FLAG_FW_INITED);
2072
2073         /* Allocate DMA memory for storing firmware image */
2074         error = bus_dma_tag_create(sc->iwi_parent_tag, 1, 0, BUS_SPACE_MAXADDR_32BIT,
2075             BUS_SPACE_MAXADDR, NULL, NULL, size, 1, size, BUS_DMA_ALLOCNOW, &dmat);
2076         if (error != 0) {
2077                 device_printf(sc->sc_dev,
2078                     "could not create firmware DMA tag\n");
2079                 goto fail1;
2080         }
2081
2082         /*
2083          * We cannot map fw directly because of some hardware constraints on
2084          * the mapping address.
2085          */
2086         error = bus_dmamem_alloc(dmat, &virtaddr, BUS_DMA_WAITOK, &map);
2087         if (error != 0) {
2088                 device_printf(sc->sc_dev,
2089                     "could not allocate firmware DMA memory\n");
2090                 goto fail2;
2091         }
2092
2093         error = bus_dmamap_load(dmat, map, virtaddr, size, iwi_dma_map_addr,
2094             &physaddr, 0);
2095         if (error != 0) {
2096                 device_printf(sc->sc_dev, "could not load firmware DMA map\n");
2097                 goto fail3;
2098         }
2099
2100         /* Copy firmware image to DMA memory */
2101         bcopy(fw, virtaddr, size);
2102
2103         /* Make sure the adapter will get up-to-date values */
2104         bus_dmamap_sync(dmat, map, BUS_DMASYNC_PREWRITE);
2105
2106         /* Tell the adapter where the command blocks are stored */
2107         MEM_WRITE_4(sc, 0x3000a0, 0x27000);
2108
2109         /*
2110          * Store command blocks into adapter's internal memory using register
2111          * indirections. The adapter will read the firmware image through DMA
2112          * using information stored in command blocks.
2113          */
2114         src = physaddr;
2115         p = virtaddr;
2116         end = p + size;
2117         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000);
2118
2119         while (p < end) {
2120                 dst = GETLE32(p); p += 4; src += 4;
2121                 len = GETLE32(p); p += 4; src += 4;
2122                 p += len;
2123
2124                 while (len > 0) {
2125                         mlen = min(len, IWI_CB_MAXDATALEN);
2126
2127                         ctl = IWI_CB_DEFAULT_CTL | mlen;
2128                         sum = ctl ^ src ^ dst;
2129
2130                         /* Write a command block */
2131                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl);
2132                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src);
2133                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst);
2134                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum);
2135
2136                         src += mlen;
2137                         dst += mlen;
2138                         len -= mlen;
2139                 }
2140         }
2141
2142         /* Write a fictive final command block (sentinel) */
2143         sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR);
2144         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2145
2146         CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) &
2147             ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER));
2148
2149         /* Tell the adapter to start processing command blocks */
2150         MEM_WRITE_4(sc, 0x3000a4, 0x540100);
2151
2152         /* Wait until the adapter has processed all command blocks */
2153         for (ntries = 0; ntries < 400; ntries++) {
2154                 if (MEM_READ_4(sc, 0x3000d0) >= sentinel)
2155                         break;
2156                 DELAY(100);
2157         }
2158         if (ntries == 400) {
2159                 device_printf(sc->sc_dev,
2160                     "timeout processing command blocks\n");
2161                 error = EIO;
2162                 goto fail4;
2163         }
2164
2165
2166         /* We're done with command blocks processing */
2167         MEM_WRITE_4(sc, 0x3000a4, 0x540c00);
2168
2169         /* Allow interrupts so we know when the firmware is inited */
2170         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK);
2171
2172         /* Tell the adapter to initialize the firmware */
2173         CSR_WRITE_4(sc, IWI_CSR_RST, 0);
2174         CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) |
2175             IWI_CTL_ALLOW_STANDBY);
2176
2177         /* Wait at most one second for firmware initialization to complete */
2178         if ((error = tsleep(IWI_FW_INITIALIZED(sc), 0, "iwiini", hz)) != 0) {
2179                 device_printf(sc->sc_dev, "timeout waiting for firmware "
2180                     "initialization to complete\n");
2181                 goto fail4;
2182         }
2183
2184 fail4:  bus_dmamap_sync(dmat, map, BUS_DMASYNC_POSTWRITE);
2185         bus_dmamap_unload(dmat, map);
2186 fail3:  bus_dmamem_free(dmat, virtaddr, map);
2187 fail2:  bus_dma_tag_destroy(dmat);
2188 fail1:
2189         return error;
2190 }
2191
2192 /*
2193  * Store firmware into kernel memory so we can download it when we need to,
2194  * e.g when the adapter wakes up from suspend mode.
2195  */
2196 static int
2197 iwi_cache_firmware(struct iwi_softc *sc, void *data, int is_ibss)
2198 {
2199         struct iwi_firmware *kfw = &sc->fw;
2200         struct iwi_firmware ufw;
2201         int error;
2202
2203         iwi_free_firmware(sc);
2204
2205         /*
2206          * mutex(9): no mutexes should be held across functions which access
2207          * memory in userspace, such as copyin(9) [...]
2208          */
2209
2210         if ((error = copyin(data, &ufw, sizeof ufw)) != 0)
2211                 goto fail1;
2212
2213         kfw->boot_size  = ufw.boot_size;
2214         kfw->ucode_size = ufw.ucode_size;
2215         kfw->main_size  = ufw.main_size;
2216
2217         kfw->boot = malloc(kfw->boot_size, M_DEVBUF, M_WAITOK);
2218         if (kfw->boot == NULL) {
2219                 error = ENOMEM;
2220                 goto fail1;
2221         }
2222
2223         kfw->ucode = malloc(kfw->ucode_size, M_DEVBUF, M_WAITOK);
2224         if (kfw->ucode == NULL) {
2225                 error = ENOMEM;
2226                 goto fail2;
2227         }
2228
2229         kfw->main = malloc(kfw->main_size, M_DEVBUF, M_WAITOK);
2230         if (kfw->main == NULL) {
2231                 error = ENOMEM;
2232                 goto fail3;
2233         }
2234
2235         if ((error = copyin(ufw.boot, kfw->boot, kfw->boot_size)) != 0)
2236                 goto fail4;
2237
2238         if ((error = copyin(ufw.ucode, kfw->ucode, kfw->ucode_size)) != 0)
2239                 goto fail4;
2240
2241         if ((error = copyin(ufw.main, kfw->main, kfw->main_size)) != 0)
2242                 goto fail4;
2243
2244         DPRINTF(("Firmware cached: boot %u, ucode %u, main %u\n",
2245             kfw->boot_size, kfw->ucode_size, kfw->main_size));
2246
2247
2248         sc->flags |= IWI_FLAG_FW_CACHED;
2249         sc->flags |= is_ibss ? IWI_FLAG_FW_IBSS : 0;
2250         return 0;
2251
2252 fail4:  free(kfw->boot, M_DEVBUF);
2253 fail3:  free(kfw->ucode, M_DEVBUF);
2254 fail2:  free(kfw->main, M_DEVBUF);
2255 fail1:
2256
2257         return error;
2258 }
2259
2260 static void
2261 iwi_free_firmware(struct iwi_softc *sc)
2262 {
2263         if (!(sc->flags & IWI_FLAG_FW_CACHED))
2264                 return;
2265
2266         free(sc->fw.boot, M_DEVBUF);
2267         free(sc->fw.ucode, M_DEVBUF);
2268         free(sc->fw.main, M_DEVBUF);
2269
2270         sc->flags &= ~( IWI_FLAG_FW_CACHED | IWI_FLAG_FW_IBSS );
2271 }
2272
2273 static int
2274 iwi_adapter_config(struct iwi_softc *sc, int is_a, int cmd_wait)
2275 {
2276         struct iwi_configuration config;
2277
2278         bzero(&config, sizeof config);
2279         config.enable_multicast = 1;
2280         config.noise_reported = 1;
2281
2282         config.bg_autodetect =
2283                 ( !(is_a) &&
2284                   ( sc->enable_bg_autodetect != 0 ) ) ? 1 : 0;  /* default: on  */
2285
2286         config.bluetooth_coexistence =
2287                 ( sc->enable_bt_coexist != 0 ) ? 1 : 0;         /* default: on  */
2288
2289         config.enable_cts_to_self =
2290                 ( sc->enable_cts_to_self > 0 ) ? 1 : 0;         /* default: off */
2291
2292         if (sc->antenna_diversity > 0 ) {                       /* default: BOTH */
2293                 switch( sc->antenna_diversity ) {
2294                         case 1: case 3:
2295                                 config.antenna_diversity = sc->antenna_diversity;
2296                 }
2297         }
2298
2299         config.disable_unicast_decryption =
2300                 ( sc->disable_unicast_decryption != 0 ) ? 1 : 0; /* default: on */
2301
2302         config.disable_multicast_decryption =
2303                 ( sc->disable_multicast_decryption != 0 ) ? 1 : 0;/* default: on */
2304
2305
2306         if ( sc->debug_level > 0 ) {
2307                 printf("config.bluetooth_coexistence = %d\n",
2308                          config.bluetooth_coexistence );
2309                 printf("config.bg_autodetect = %d\n",
2310                          config.bg_autodetect );
2311                 printf("config.enable_cts_to_self = %d\n",
2312                          config.enable_cts_to_self );
2313                 printf("config.antenna_diversity = %d\n",
2314                          config.antenna_diversity );
2315                 printf("config.disable_unicast_decryption = %d\n",
2316                          config.disable_unicast_decryption );
2317                 printf("config.disable_multicast_decryption = %d\n",
2318                          config.disable_multicast_decryption );
2319                 printf("config.neg_best_rates_first = %d\n",
2320                          sc->enable_neg_best_first );
2321         }
2322
2323         return iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config,
2324                  sizeof config, cmd_wait );
2325 }
2326
2327 static int
2328 iwi_config(struct iwi_softc *sc)
2329 {
2330         struct ieee80211com *ic = &sc->sc_ic;
2331         struct ifnet *ifp = &ic->ic_if;
2332         struct iwi_rateset rs;
2333         struct iwi_txpower power;
2334         struct ieee80211_wepkey *k;
2335         struct iwi_wep_key wepkey;
2336         u_int32_t data;
2337         int error, i;
2338
2339         IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp));
2340         DPRINTF(("Setting MAC address to %6D\n", ic->ic_myaddr, ":"));
2341         error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, ic->ic_myaddr,
2342             IEEE80211_ADDR_LEN, 0);
2343         if (error != 0)
2344                 return error;
2345
2346         DPRINTF(("Configuring adapter\n"));
2347         if ((error = iwi_adapter_config(sc, 1, 0)) != 0)
2348                 return error;
2349
2350         data = htole32(IWI_POWER_MODE_CAM);
2351         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2352         error = iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data, 0);
2353         if (error != 0)
2354                 return error;
2355
2356         data = htole32(ic->ic_rtsthreshold);
2357         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2358         error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data, 0);
2359         if (error != 0)
2360                 return error;
2361
2362         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2363                 power.mode = IWI_MODE_11B;
2364                 power.nchan = 11;
2365                 for (i = 0; i < 11; i++) {
2366                         power.chan[i].chan = i + 1;
2367                         power.chan[i].power = IWI_TXPOWER_MAX;
2368                 }
2369                 DPRINTF(("Setting .11b channels tx power\n"));
2370                 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power,
2371                     0);
2372                 if (error != 0)
2373                         return error;
2374
2375                 power.mode = IWI_MODE_11G;
2376                 DPRINTF(("Setting .11g channels tx power\n"));
2377                 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power,
2378                     0);
2379                 if (error != 0)
2380                         return error;
2381         }
2382
2383         rs.mode = IWI_MODE_11G;
2384         rs.type = IWI_RATESET_TYPE_SUPPORTED;
2385         rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates;
2386         bcopy(ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates, rs.rates,
2387             rs.nrates);
2388         DPRINTF(("Setting .11bg 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         rs.mode = IWI_MODE_11A;
2394         rs.type = IWI_RATESET_TYPE_SUPPORTED;
2395         rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates;
2396         bcopy(ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates, rs.rates,
2397             rs.nrates);
2398         DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates));
2399         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0);
2400         if (error != 0)
2401                 return error;
2402
2403         data = htole32(arc4random());
2404         DPRINTF(("Setting initialization vector to %u\n", le32toh(data)));
2405         error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data, 0);
2406         if (error != 0)
2407                 return error;
2408
2409         if (ic->ic_flags & IEEE80211_F_WEPON) {
2410                 k = ic->ic_nw_keys;
2411                 for (i = 0; i < IEEE80211_WEP_NKID; i++, k++) {
2412                         wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY;
2413                         wepkey.idx = i;
2414                         wepkey.len = k->wk_len;
2415                         bzero(wepkey.key, sizeof wepkey.key);
2416                         bcopy(k->wk_key, wepkey.key, k->wk_len);
2417                         DPRINTF(("Setting wep key index %u len %u\n",
2418                             wepkey.idx, wepkey.len));
2419                         error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey,
2420                             sizeof wepkey, 0);
2421                         if (error != 0)
2422                                 return error;
2423                 }
2424         }
2425
2426         /* Enable adapter */
2427         DPRINTF(("Enabling adapter\n"));
2428         return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0, 0);
2429 }
2430
2431 static int
2432 iwi_scan(struct iwi_softc *sc)
2433 {
2434         struct ieee80211com *ic = &sc->sc_ic;
2435         struct iwi_scan scan;
2436         u_int8_t *p;
2437         int i, count;
2438         int do_5ghz_scan = 0;
2439
2440         sc->scan_counter++; /* track the number of scans started */
2441
2442         sc->flags |= IWI_FLAG_SCANNING;
2443
2444         bzero(&scan, sizeof scan);
2445
2446         /*
2447          * Alternate two broadcast scans with
2448          * two broadcast/direct scans.
2449          */
2450         if ( sc->scan_counter & 2 ) {
2451                 scan.type = IWI_SCAN_TYPE_BROADCAST_AND_DIRECT;
2452                 scan.intval = htole16(100);
2453         } else {
2454                 scan.type = IWI_SCAN_TYPE_BROADCAST;
2455                 scan.intval = htole16(40);
2456         }
2457
2458         p = scan.channels;
2459
2460         /*
2461          * If we have .11a capable adapter, and
2462          *      - we are in .11a mode, or
2463          *      - we are in auto mode and this is an odd numbered scan
2464          * then do a 5GHz scan, otherwise do a 2GHz scan.
2465          */
2466         if ( ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates > 0 ) {
2467                 if (( ic->ic_curmode == IEEE80211_MODE_11A ) ||
2468                     (( ic->ic_curmode == IEEE80211_MODE_AUTO ) &&
2469                      ( sc->scan_counter & 1)))
2470                         do_5ghz_scan = 1;
2471         }
2472         count = 0;
2473         if ( do_5ghz_scan ) {
2474                 DPRINTF(("Scanning 5GHz band\n"));
2475                 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) {
2476                         if (IEEE80211_IS_CHAN_5GHZ(&ic->ic_channels[i]) &&
2477                                         isset(ic->ic_chan_active, i)) {
2478                                 *++p = i;
2479                                 count++;
2480                         }
2481                 }
2482                 *(p - count) = IWI_CHAN_5GHZ | count;
2483         } else {
2484                 DPRINTF(("Scanning 2GHz band\n"));
2485                 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) {
2486                         if (IEEE80211_IS_CHAN_2GHZ(&ic->ic_channels[i]) &&
2487                                         isset(ic->ic_chan_active, i)) {
2488                                 *++p = i;
2489                                 count++;
2490                         }
2491                 }
2492                 *(p - count) = IWI_CHAN_2GHZ | count;
2493         }
2494         return iwi_cmd(sc, IWI_CMD_SCAN, &scan, sizeof scan, 1);
2495 }
2496
2497 static int
2498 iwi_auth_and_assoc(struct iwi_softc *sc)
2499 {
2500         struct ieee80211com *ic = &sc->sc_ic;
2501         struct ifnet *ifp = &ic->ic_if;
2502         struct ieee80211_node *ni = ic->ic_bss;
2503         struct iwi_rateset rs;
2504         u_int32_t data;
2505         int error, x;
2506
2507         if ( ( sc->flags & IWI_FLAG_FW_IBSS ) &&
2508              !( ni->ni_capinfo & IEEE80211_CAPINFO_IBSS ) ) {
2509                 return -1; /* IBSS F/W requires network ibss capability */
2510         }
2511
2512         DPRINTF(("Configuring adapter\n"));
2513         if ((error = iwi_adapter_config(sc,
2514                 IEEE80211_IS_CHAN_5GHZ(ni->ni_chan), 1)) != 0)
2515                         return error;
2516
2517 #ifdef IWI_DEBUG
2518         if (sc->debug_level > 0) {
2519                 printf("Setting ESSID to ");
2520                 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
2521                 printf("\n");
2522         }
2523 #endif
2524         error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen, 1);
2525         if (error != 0)
2526                 return error;
2527
2528         /* the rate set has already been "negotiated" */
2529         rs.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A :
2530             IWI_MODE_11G;
2531         rs.type = IWI_RATESET_TYPE_NEGOTIATED;
2532         rs.nrates = ni->ni_rates.rs_nrates;
2533         if ( sc->enable_neg_best_first != 1 ) {
2534                 bcopy(ni->ni_rates.rs_rates, rs.rates, rs.nrates);
2535         } else {
2536                 for ( x = 0 ; x < rs.nrates; x++ ) {
2537                         /*
2538                          * Present the firmware with the most favourable
2539                          * of the negotiated rates first.
2540                          */
2541                         rs.rates[rs.nrates-x-1] = ni->ni_rates.rs_rates[x];
2542                 }
2543         }
2544
2545         if ( sc->debug_level > 0 ) {
2546                 printf("Setting negotiated rates (%u) : ", rs.nrates);
2547                 for ( x = 0 ; x < rs.nrates; x++ ) {
2548                         printf("%d ", rs.rates[x]);
2549                 }
2550                 printf("\n");
2551         }
2552
2553         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 1);
2554         if (error != 0)
2555                 return error;
2556
2557         data = htole32(ni->ni_rssi);
2558         DPRINTF(("Setting sensitivity to %d\n", (int8_t)ni->ni_rssi));
2559         error = iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &data, sizeof data, 1);
2560         if (error != 0)
2561                 return error;
2562
2563         bzero(&sc->assoc, sizeof sc->assoc);
2564         sc->assoc.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A :
2565             IWI_MODE_11G;
2566         sc->assoc.chan = ieee80211_chan2ieee(ic, ni->ni_chan);
2567         if (sc->authmode == IEEE80211_AUTH_SHARED)
2568                 sc->assoc.auth = (ic->ic_wep_txkey << 4) | IWI_AUTH_SHARED;
2569         bcopy(ni->ni_tstamp, sc->assoc.tstamp, 8);
2570         sc->assoc.capinfo = htole16(ni->ni_capinfo);
2571         sc->assoc.lintval = htole16(ic->ic_lintval);
2572         sc->assoc.intval = htole16(ni->ni_intval);
2573         IEEE80211_ADDR_COPY(sc->assoc.bssid, ni->ni_bssid);
2574         if ( ic->ic_opmode == IEEE80211_M_IBSS )
2575                 IEEE80211_ADDR_COPY(sc->assoc.dst, ifp->if_broadcastaddr);
2576         else
2577                 IEEE80211_ADDR_COPY(sc->assoc.dst, ni->ni_bssid);
2578
2579         DPRINTF(("Trying to associate to %6D channel %u auth %u\n",
2580             sc->assoc.bssid, ":", sc->assoc.chan, sc->assoc.auth));
2581         return iwi_cmd(sc, IWI_CMD_ASSOCIATE, &sc->assoc, sizeof sc->assoc, 1);
2582 }
2583
2584 static void
2585 iwi_init(void *priv)
2586 {
2587         struct iwi_softc *sc = priv;
2588         struct ieee80211com *ic = &sc->sc_ic;
2589         struct ifnet *ifp = &ic->ic_if;
2590         struct iwi_firmware *fw = &sc->fw;
2591         int i;
2592
2593         /* exit immediately if firmware has not been ioctl'd */
2594         if (!(sc->flags & IWI_FLAG_FW_CACHED)) {
2595                 ifp->if_flags &= ~IFF_UP;
2596                 return;
2597         }
2598
2599         iwi_stop(sc);
2600
2601         if (iwi_reset(sc) != 0) {
2602                 device_printf(sc->sc_dev, "could not reset adapter\n");
2603                 goto fail;
2604         }
2605
2606         if (iwi_load_firmware(sc, fw->boot, fw->boot_size) != 0) {
2607                 device_printf(sc->sc_dev, "could not load boot firmware\n");
2608                 goto fail;
2609         }
2610
2611         if (iwi_load_ucode(sc, fw->ucode, fw->ucode_size) != 0) {
2612                 device_printf(sc->sc_dev, "could not load microcode\n");
2613                 goto fail;
2614         }
2615
2616         iwi_stop_master(sc);
2617
2618         sc->tx_cur = 0;
2619         sc->tx_queued = 0;
2620         sc->tx_old = IWI_TX_RING_SIZE - 1;
2621         sc->cmd_cur = 0;
2622         sc->rx_cur = IWI_RX_RING_SIZE - 1;
2623
2624         CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmd_ring_pa);
2625         CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, IWI_CMD_RING_SIZE);
2626         CSR_WRITE_4(sc, IWI_CSR_CMD_READ_INDEX, 0);
2627         CSR_WRITE_4(sc, IWI_CSR_CMD_WRITE_INDEX, sc->cmd_cur);
2628
2629         CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->tx_ring_pa);
2630         CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, IWI_TX_RING_SIZE);
2631         CSR_WRITE_4(sc, IWI_CSR_TX1_READ_INDEX, 0);
2632         CSR_WRITE_4(sc, IWI_CSR_TX1_WRITE_INDEX, sc->tx_cur);
2633
2634         CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->tx_ring_pa);
2635         CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, IWI_TX_RING_SIZE);
2636         CSR_WRITE_4(sc, IWI_CSR_TX2_READ_INDEX, 0);
2637         CSR_WRITE_4(sc, IWI_CSR_TX2_WRITE_INDEX, 0);
2638
2639         CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->tx_ring_pa);
2640         CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, IWI_TX_RING_SIZE);
2641         CSR_WRITE_4(sc, IWI_CSR_TX3_READ_INDEX, 0);
2642         CSR_WRITE_4(sc, IWI_CSR_TX3_WRITE_INDEX, 0);
2643
2644         CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->tx_ring_pa);
2645         CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, IWI_TX_RING_SIZE);
2646         CSR_WRITE_4(sc, IWI_CSR_TX4_READ_INDEX, 0);
2647         CSR_WRITE_4(sc, IWI_CSR_TX4_WRITE_INDEX, 0);
2648
2649         for (i = 0; i < IWI_RX_RING_SIZE; i++)
2650                 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4,
2651                     sc->rx_buf[i].physaddr);
2652
2653         /*
2654          * Kick Rx
2655          */
2656         CSR_WRITE_4(sc, IWI_CSR_RX_WRITE_INDEX, sc->rx_cur);
2657         CSR_WRITE_4(sc, IWI_CSR_RX_READ_INDEX, 0);
2658
2659         if (iwi_load_firmware(sc, fw->main, fw->main_size) != 0) {
2660                 device_printf(sc->sc_dev, "could not load main firmware\n");
2661                 goto fail;
2662         }
2663
2664         /*
2665          * Force the opmode based on what firmware is loaded. This
2666          * stops folks from killing the firmware by asking it to
2667          * do something it doesn't support.
2668          */
2669         if ( ic->ic_opmode != IEEE80211_M_MONITOR ) {
2670                 ic->ic_opmode = ( sc->flags & IWI_FLAG_FW_IBSS )
2671                         ? IEEE80211_M_IBSS : IEEE80211_M_STA;
2672         }
2673
2674         sc->flags |= IWI_FLAG_FW_INITED;
2675
2676         sc->flags &= ~( IWI_FLAG_SCANNING |
2677                         IWI_FLAG_SCAN_COMPLETE |
2678                         IWI_FLAG_SCAN_ABORT |
2679                         IWI_FLAG_ASSOCIATED );
2680
2681         if (iwi_config(sc) != 0) {
2682                 device_printf(sc->sc_dev, "device configuration failed\n");
2683                 goto fail;
2684         }
2685
2686         if ( ic->ic_opmode != IEEE80211_M_MONITOR ) {
2687                 ieee80211_begin_scan(ifp);
2688                 ifp->if_flags &= ~IFF_OACTIVE;
2689                 ifp->if_flags |= IFF_RUNNING;
2690         } else {
2691                 ieee80211_begin_scan(ifp);
2692                 ifp->if_flags &= ~IFF_OACTIVE;
2693                 ifp->if_flags |= IFF_RUNNING;
2694         }
2695
2696         return;
2697
2698 fail:
2699         if ( !(sc->flags & IWI_FLAG_RESET) )
2700                 ifp->if_flags &= ~IFF_UP;
2701         iwi_stop(sc);
2702 }
2703
2704 static void
2705 iwi_init_locked(void *priv)
2706 {
2707         struct iwi_softc *sc = priv;
2708         IWI_LOCK_INFO;
2709         IWI_LOCK(sc);
2710         iwi_init(sc);
2711         IWI_UNLOCK(sc);
2712 }
2713
2714 static void
2715 iwi_stop(void *priv)
2716 {
2717         struct iwi_softc *sc = priv;
2718         struct ieee80211com *ic = &sc->sc_ic;
2719         struct ifnet *ifp = &ic->ic_if;
2720         struct iwi_tx_buf *buf;
2721         int i;
2722
2723         iwi_stop_master(sc);
2724         CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SW_RESET);
2725
2726         /*
2727          * Release Tx buffers
2728          */
2729         for (i = 0; i < IWI_TX_RING_SIZE; i++) {
2730                 buf = &sc->tx_buf[i];
2731
2732                 if (buf->m != NULL) {
2733                         bus_dmamap_sync(sc->tx_buf_dmat, buf->map,
2734                             BUS_DMASYNC_POSTWRITE);
2735                         bus_dmamap_unload(sc->tx_buf_dmat, buf->map);
2736                         m_freem(buf->m);
2737                         buf->m = NULL;
2738
2739                         if (buf->ni != NULL) {
2740                                 if (buf->ni != ic->ic_bss)
2741                                         ieee80211_free_node(ic, buf->ni);
2742                                 buf->ni = NULL;
2743                         }
2744                 }
2745         }
2746
2747         ifp->if_timer = 0;
2748         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
2749
2750         ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
2751 }
2752
2753 static int8_t
2754 iwi_cache_station(struct iwi_softc *sc, u_int8_t *mac)
2755 {
2756         int i, x, base, elemsize = sizeof(struct iwi_fw_station);
2757         for (i = 0; i < sc->num_stations; i++)
2758                 if (!memcmp(sc->stations[i], mac, IEEE80211_ADDR_LEN))
2759                         break;
2760         if (i == IWI_FW_MAX_STATIONS)
2761                 return 0xff;
2762         memcpy(sc->stations[i], mac, IEEE80211_ADDR_LEN);
2763         for (x = 0, base = IWI_STATION_TABLE + (i * elemsize) ;
2764              x < IEEE80211_ADDR_LEN ; x++ ) {
2765                 CSR_WRITE_1(sc, base + x, mac[x]);
2766         }
2767         if ( (i + 1) > sc->num_stations )
2768                 sc->num_stations++;
2769         return i;
2770 }
2771
2772 static u_int8_t
2773 iwi_find_station(struct iwi_softc *sc, u_int8_t *mac)
2774 {
2775         u_int8_t i;
2776         for (i = 0; i < sc->num_stations; i++)
2777                 if (!memcmp(sc->stations[i], mac, IEEE80211_ADDR_LEN))
2778                         return i;
2779         return 0xff;
2780 }
2781
2782 static const char *
2783 iwi_error_desc(u_int32_t val)
2784 {
2785         switch (val) {
2786         case IWI_FW_ERROR_OK:
2787                 return "OK";
2788         case IWI_FW_ERROR_FAIL:
2789                 return "FAIL";
2790         case IWI_FW_ERROR_MEMORY_UNDERFLOW:
2791                 return "MEMORY_UNDERFLOW";
2792         case IWI_FW_ERROR_MEMORY_OVERFLOW:
2793                 return "MEMORY_OVERFLOW";
2794         case IWI_FW_ERROR_BAD_PARAM:
2795                 return "BAD_PARAMETER";
2796         case IWI_FW_ERROR_BAD_CHECKSUM:
2797                 return "BAD_CHECKSUM";
2798         case IWI_FW_ERROR_NMI_INTERRUPT:
2799                 return "NMI_INTERRUPT";
2800         case IWI_FW_ERROR_BAD_DATABASE:
2801                 return "BAD_DATABASE";
2802         case IWI_FW_ERROR_ALLOC_FAIL:
2803                 return "ALLOC_FAIL";
2804         case IWI_FW_ERROR_DMA_UNDERRUN:
2805                 return "DMA_UNDERRUN";
2806         case IWI_FW_ERROR_DMA_STATUS:
2807                 return "DMA_STATUS";
2808         case IWI_FW_ERROR_DINOSTATUS_ERROR:
2809                 return "DINOSTATUS_ERROR";
2810         case IWI_FW_ERROR_EEPROMSTATUS_ERROR:
2811                 return "EEPROMSTATUS_ERROR";
2812         case IWI_FW_ERROR_SYSASSERT:
2813                 return "SYSASSERT";
2814         case IWI_FW_ERROR_FATAL_ERROR:
2815                 return "FATAL";
2816         default:
2817                 return "UNKNOWN_ERROR";
2818         }
2819 }
2820
2821 static void
2822 iwi_dump_fw_event_log(struct iwi_softc *sc)
2823 {
2824         u_int32_t ev, time, data, i, count, base;
2825         base = CSR_READ_4(sc, IWI_FW_EVENT_LOG);
2826         count = MEM_READ_4(sc, base);
2827         if ( count > 0 && (sc->flags & IWI_FLAG_FW_INITED) ) {
2828                 printf("Reading %d event log entries from base address 0x%x.\n",
2829                         count,  base);
2830                 if (IWI_FW_EVENT_START_OFFSET <= count * IWI_FW_EVENT_ELEM_SIZE)
2831                         device_printf(sc->sc_dev,"Start IWI Event Log Dump:\n");
2832                 for (i = IWI_FW_EVENT_START_OFFSET;
2833                                 i <= count * IWI_FW_EVENT_ELEM_SIZE;
2834                                 i += IWI_FW_EVENT_ELEM_SIZE) {
2835                         ev = MEM_READ_4(sc, base + i);
2836                         time  = MEM_READ_4(sc, base + i + 1 * sizeof(u_int32_t));
2837                         data  = MEM_READ_4(sc, base + i + 2 * sizeof(u_int32_t));
2838                         printf("%d %8p %8.8d\n", time, (void *) data, ev);
2839                 }
2840         } else {
2841                 printf("There are no entries in the firmware event log.\n");
2842         }
2843 }
2844
2845 static void
2846 iwi_dump_fw_error_log(struct iwi_softc *sc)
2847 {
2848         u_int32_t i = 0;
2849         int32_t count, base;
2850         base = CSR_READ_4(sc, IWI_FW_ERROR_LOG);
2851         count = MEM_READ_4(sc, base);
2852         if ( count > 0 && (sc->flags & IWI_FLAG_FW_INITED) ) {
2853                 printf("Reading %d error log entries "
2854                     "from base address 0x%p.\n", count,  (void *)base);
2855                 for ( i = IWI_FW_ERROR_START_OFFSET;
2856                         i <= count * IWI_FW_EVENT_ELEM_SIZE;
2857                         i += IWI_FW_ERROR_ELEM_SIZE ) {
2858                         u_int32_t elems;
2859                         printf("%15.15s",
2860                             iwi_error_desc(MEM_READ_4(sc, base + i)));
2861                         printf(" time(%8.8d)", MEM_READ_4(sc, base + i + 4));
2862                         for ( elems = 2 ; elems < 7 ; elems++ ) {
2863                                 printf(" %8p", (void *)
2864                                     MEM_READ_4(sc, base + i + (4 * elems)));
2865                         }
2866                         printf("\n");
2867                 }
2868         }
2869 }
2870
2871 static int
2872 iwi_sysctl_cts_to_self(SYSCTL_HANDLER_ARGS)
2873 {
2874         struct iwi_softc *sc = (void *)arg1;
2875         int cts_to_self = sc->enable_cts_to_self;
2876         int error = sysctl_handle_int(oidp, &cts_to_self, 0, req);
2877
2878         (void)arg2; /* silence WARNS == 6 */
2879
2880         if ( !error && req->newptr && cts_to_self != sc->enable_cts_to_self ) {
2881                 switch ( cts_to_self ) {
2882                         case -1: case 0: case 1:
2883                                 sc->enable_cts_to_self = cts_to_self;
2884                                 error = iwi_adapter_config(sc, 0, 0);
2885                         break;
2886                 }
2887         }
2888         return error;
2889 }
2890
2891
2892 static int
2893 iwi_sysctl_antenna_diversity(SYSCTL_HANDLER_ARGS)
2894 {
2895         struct iwi_softc *sc = (void *)arg1;
2896         int antenna_diversity = sc->antenna_diversity;
2897         int error = sysctl_handle_int(oidp, &antenna_diversity, 0, req);
2898
2899         (void)arg2; /* silence WARNS == 6 */
2900
2901         if ( !error && req->newptr && antenna_diversity != sc->antenna_diversity ) {
2902                 switch ( antenna_diversity ) {
2903                         case 1: case 3: case 0: case -1:
2904                                 sc->antenna_diversity = antenna_diversity;
2905                                 error = iwi_adapter_config(sc, 0, 0);
2906                         break;
2907                 }
2908         }
2909         return error;
2910 }
2911
2912 static int
2913 iwi_sysctl_bg_autodetect(SYSCTL_HANDLER_ARGS)
2914 {
2915         struct iwi_softc *sc = (void *)arg1;
2916         int bg_autodetect = sc->enable_bg_autodetect;
2917         int error = sysctl_handle_int(oidp, &bg_autodetect, 0, req);
2918
2919         (void)arg2; /* silence WARNS == 6 */
2920
2921         if ( !error && req->newptr && bg_autodetect != sc->enable_bg_autodetect ) {
2922                 switch ( bg_autodetect ) {
2923                         case 1: case 0: case -1:
2924                                 sc->enable_bg_autodetect = bg_autodetect;
2925                                 error = iwi_adapter_config(sc, 0, 0);
2926                         break;
2927                 }
2928         }
2929         return error;
2930 }
2931
2932 static int
2933 iwi_sysctl_bt_coexist(SYSCTL_HANDLER_ARGS)
2934 {
2935         struct iwi_softc *sc = (void *)arg1;
2936         int bt_coexist = sc->enable_bt_coexist;
2937         int error = sysctl_handle_int(oidp, &bt_coexist, 0, req);
2938
2939         (void)arg2; /* silence WARNS == 6 */
2940
2941         if ( !error && req->newptr && bt_coexist != sc->enable_bt_coexist ) {
2942                 switch ( bt_coexist ) {
2943                         case 1: case 0: case -1:
2944                                 sc->enable_bt_coexist = bt_coexist;
2945                                 error = iwi_adapter_config(sc, 0, 0);
2946                         break;
2947                 }
2948         }
2949         return error;
2950 }
2951
2952 static int
2953 iwi_sysctl_dump_logs(SYSCTL_HANDLER_ARGS)
2954 {
2955         struct iwi_softc *sc = arg1;
2956         int result = -1;
2957         int error = sysctl_handle_int(oidp, &result, 0, req);
2958
2959         (void)arg2; /* silence WARNS == 6 */
2960
2961         if (!error && req->newptr && result == 1) {
2962                 iwi_dump_fw_event_log(sc);
2963                 iwi_dump_fw_error_log(sc);
2964         }
2965         return error;
2966 }
2967
2968 static int
2969 iwi_sysctl_stats(SYSCTL_HANDLER_ARGS)
2970 {
2971         struct iwi_softc *sc = arg1;
2972         u_int32_t size;
2973         struct iwi_dump_buffer dump;
2974
2975         (void)arg2; /* silence WARNS == 6 */
2976         (void)oidp; /* silence WARNS == 6 */
2977
2978         if (!(sc->flags & IWI_FLAG_FW_INITED)) {
2979                 bzero(dump.buf, sizeof dump.buf);
2980                 return SYSCTL_OUT(req, &dump, sizeof dump);
2981         }
2982
2983         size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1);
2984         CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &dump.buf[1], size);
2985
2986         return SYSCTL_OUT(req, &dump, sizeof dump);
2987 }
2988
2989 static int
2990 iwi_sysctl_radio(SYSCTL_HANDLER_ARGS)
2991 {
2992         struct iwi_softc *sc = arg1;
2993         int val;
2994
2995         (void)arg2; /* silence WARNS == 6 */
2996         (void)oidp; /* silence WARNS == 6 */
2997
2998         val = (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) ? 1 : 0;
2999         return SYSCTL_OUT(req, &val, sizeof val);
3000 }
3001
3002 static int
3003 iwi_sysctl_neg_best_rates_first(SYSCTL_HANDLER_ARGS)
3004 {
3005         struct iwi_softc *sc = arg1;
3006         int best_first = sc->enable_neg_best_first;
3007         int error = sysctl_handle_int(oidp, &best_first, 0, req);
3008
3009         (void)arg2; /* silence WARNS == 6 */
3010         (void)oidp; /* silence WARNS == 6 */
3011
3012         if ( !error && req->newptr && best_first != sc->enable_neg_best_first ) {
3013                 switch ( best_first ) {
3014                         case 1: case 0: case -1:
3015                                 sc->enable_neg_best_first = best_first;
3016                         break;
3017                 }
3018         }
3019         return error;
3020 }
3021
3022 static int
3023 iwi_sysctl_disable_unicast_decryption(SYSCTL_HANDLER_ARGS)
3024 {
3025         struct iwi_softc *sc = arg1;
3026         int disable_uni = sc->disable_unicast_decryption;
3027         int error = sysctl_handle_int(oidp, &disable_uni, 0, req);
3028
3029         (void)arg2; /* silence WARNS == 6 */
3030         (void)oidp; /* silence WARNS == 6 */
3031
3032         if (!error && req->newptr && disable_uni != sc->disable_unicast_decryption) {
3033                 switch ( disable_uni ) {
3034                         case 1: case 0: case -1:
3035                                 sc->disable_unicast_decryption = disable_uni;
3036                         break;
3037                 }
3038         }
3039         return error;
3040 }
3041
3042 static int
3043 iwi_sysctl_disable_multicast_decryption(SYSCTL_HANDLER_ARGS)
3044 {
3045         struct iwi_softc *sc = arg1;
3046         int disable_mul = sc->disable_multicast_decryption;
3047         int error = sysctl_handle_int(oidp, &disable_mul, 0, req);
3048
3049         (void)arg2; /* silence WARNS == 6 */
3050         (void)oidp; /* silence WARNS == 6 */
3051
3052         if (!error && req->newptr && disable_mul!=sc->disable_multicast_decryption){
3053                 switch ( disable_mul ) {
3054                         case 1: case 0: case -1:
3055                                 sc->disable_multicast_decryption = disable_mul;
3056                         break;
3057                 }
3058         }
3059         return error;
3060 }
3061
3062