sys/dev/iwi/if_iwi.c

   1 /*-
   2  * Copyright (c) 2004, 2005
   3  *      Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
   4  * Copyright (c) 2005-2006 Sam Leffler, Errno Consulting
   5  * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice unmodified, this list of conditions, and the following
  12  *    disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 /*-
  34  * Intel(R) PRO/Wireless 2200BG/2225BG/2915ABG driver
  35  * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/sysctl.h>
  40 #include <sys/sockio.h>
  41 #include <sys/mbuf.h>
  42 #include <sys/kernel.h>
  43 #include <sys/socket.h>
  44 #include <sys/systm.h>
  45 #include <sys/malloc.h>
  46 #include <sys/lock.h>
  47 #include <sys/mutex.h>
  48 #include <sys/module.h>
  49 #include <sys/bus.h>
  50 #include <sys/endian.h>
  51 #include <sys/proc.h>
  52 #include <sys/mount.h>
  53 #include <sys/namei.h>
  54 #include <sys/linker.h>
  55 #include <sys/firmware.h>
  56 #include <sys/taskqueue.h>
  57
  58 #include <machine/bus.h>
  59 #include <machine/resource.h>
  60 #include <sys/rman.h>
  61
  62 #include <dev/pci/pcireg.h>
  63 #include <dev/pci/pcivar.h>
  64
  65 #include <net/bpf.h>
  66 #include <net/if.h>
  67 #include <net/if_var.h>
  68 #include <net/if_arp.h>
  69 #include <net/ethernet.h>
  70 #include <net/if_dl.h>
  71 #include <net/if_media.h>
  72 #include <net/if_types.h>
  73
  74 #include <net80211/ieee80211_var.h>
  75 #include <net80211/ieee80211_radiotap.h>
  76 #include <net80211/ieee80211_input.h>
  77 #include <net80211/ieee80211_regdomain.h>
  78
  79 #include <netinet/in.h>
  80 #include <netinet/in_systm.h>
  81 #include <netinet/in_var.h>
  82 #include <netinet/ip.h>
  83 #include <netinet/if_ether.h>
  84
  85 #include <dev/iwi/if_iwireg.h>
  86 #include <dev/iwi/if_iwivar.h>
  87 #include <dev/iwi/if_iwi_ioctl.h>
  88
  89 #define IWI_DEBUG
  90 #ifdef IWI_DEBUG
  91 #define DPRINTF(x)      do { if (iwi_debug > 0) printf x; } while (0)
  92 #define DPRINTFN(n, x)  do { if (iwi_debug >= (n)) printf x; } while (0)
  93 int iwi_debug = 0;
  94 SYSCTL_INT(_debug, OID_AUTO, iwi, CTLFLAG_RW, &iwi_debug, 0, "iwi debug level");
  95
  96 static const char *iwi_fw_states[] = {
  97         "IDLE",                 /* IWI_FW_IDLE */
  98         "LOADING",              /* IWI_FW_LOADING */
  99         "ASSOCIATING",          /* IWI_FW_ASSOCIATING */
 100         "DISASSOCIATING",       /* IWI_FW_DISASSOCIATING */
 101         "SCANNING",             /* IWI_FW_SCANNING */
 102 };
 103 #else
 104 #define DPRINTF(x)
 105 #define DPRINTFN(n, x)
 106 #endif
 107
 108 MODULE_DEPEND(iwi, pci,  1, 1, 1);
 109 MODULE_DEPEND(iwi, wlan, 1, 1, 1);
 110 MODULE_DEPEND(iwi, firmware, 1, 1, 1);
 111
 112 enum {
 113         IWI_LED_TX,
 114         IWI_LED_RX,
 115         IWI_LED_POLL,
 116 };
 117
 118 struct iwi_ident {
 119         uint16_t        vendor;
 120         uint16_t        device;
 121         const char      *name;
 122 };
 123
 124 static const struct iwi_ident iwi_ident_table[] = {
 125         { 0x8086, 0x4220, "Intel(R) PRO/Wireless 2200BG" },
 126         { 0x8086, 0x4221, "Intel(R) PRO/Wireless 2225BG" },
 127         { 0x8086, 0x4223, "Intel(R) PRO/Wireless 2915ABG" },
 128         { 0x8086, 0x4224, "Intel(R) PRO/Wireless 2915ABG" },
 129
 130         { 0, 0, NULL }
 131 };
 132
 133 static const uint8_t def_chan_2ghz[] =
 134         { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 };
 135 static const uint8_t def_chan_5ghz_band1[] =
 136         { 36, 40, 44, 48, 52, 56, 60, 64 };
 137 static const uint8_t def_chan_5ghz_band2[] =
 138         { 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 };
 139 static const uint8_t def_chan_5ghz_band3[] =
 140         { 149, 153, 157, 161, 165 };
 141
 142 static struct ieee80211vap *iwi_vap_create(struct ieee80211com *,
 143                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
 144                     const uint8_t [IEEE80211_ADDR_LEN],
 145                     const uint8_t [IEEE80211_ADDR_LEN]);
 146 static void     iwi_vap_delete(struct ieee80211vap *);
 147 static void     iwi_dma_map_addr(void *, bus_dma_segment_t *, int, int);
 148 static int      iwi_alloc_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *,
 149                     int);
 150 static void     iwi_reset_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *);
 151 static void     iwi_free_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *);
 152 static int      iwi_alloc_tx_ring(struct iwi_softc *, struct iwi_tx_ring *,
 153                     int, bus_addr_t, bus_addr_t);
 154 static void     iwi_reset_tx_ring(struct iwi_softc *, struct iwi_tx_ring *);
 155 static void     iwi_free_tx_ring(struct iwi_softc *, struct iwi_tx_ring *);
 156 static int      iwi_alloc_rx_ring(struct iwi_softc *, struct iwi_rx_ring *,
 157                     int);
 158 static void     iwi_reset_rx_ring(struct iwi_softc *, struct iwi_rx_ring *);
 159 static void     iwi_free_rx_ring(struct iwi_softc *, struct iwi_rx_ring *);
 160 static struct ieee80211_node *iwi_node_alloc(struct ieee80211vap *,
 161                     const uint8_t [IEEE80211_ADDR_LEN]);
 162 static void     iwi_node_free(struct ieee80211_node *);
 163 static void     iwi_media_status(struct ifnet *, struct ifmediareq *);
 164 static int      iwi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 165 static void     iwi_wme_init(struct iwi_softc *);
 166 static int      iwi_wme_setparams(struct iwi_softc *);
 167 static int      iwi_wme_update(struct ieee80211com *);
 168 static uint16_t iwi_read_prom_word(struct iwi_softc *, uint8_t);
 169 static void     iwi_frame_intr(struct iwi_softc *, struct iwi_rx_data *, int,
 170                     struct iwi_frame *);
 171 static void     iwi_notification_intr(struct iwi_softc *, struct iwi_notif *);
 172 static void     iwi_rx_intr(struct iwi_softc *);
 173 static void     iwi_tx_intr(struct iwi_softc *, struct iwi_tx_ring *);
 174 static void     iwi_intr(void *);
 175 static int      iwi_cmd(struct iwi_softc *, uint8_t, void *, uint8_t);
 176 static void     iwi_write_ibssnode(struct iwi_softc *, const u_int8_t [], int);
 177 static int      iwi_tx_start(struct iwi_softc *, struct mbuf *,
 178                     struct ieee80211_node *, int);
 179 static int      iwi_raw_xmit(struct ieee80211_node *, struct mbuf *,
 180                     const struct ieee80211_bpf_params *);
 181 static void     iwi_start(struct iwi_softc *);
 182 static int      iwi_transmit(struct ieee80211com *, struct mbuf *);
 183 static void     iwi_watchdog(void *);
 184 static int      iwi_ioctl(struct ieee80211com *, u_long, void *);
 185 static void     iwi_parent(struct ieee80211com *);
 186 static void     iwi_stop_master(struct iwi_softc *);
 187 static int      iwi_reset(struct iwi_softc *);
 188 static int      iwi_load_ucode(struct iwi_softc *, const struct iwi_fw *);
 189 static int      iwi_load_firmware(struct iwi_softc *, const struct iwi_fw *);
 190 static void     iwi_release_fw_dma(struct iwi_softc *sc);
 191 static int      iwi_config(struct iwi_softc *);
 192 static int      iwi_get_firmware(struct iwi_softc *, enum ieee80211_opmode);
 193 static void     iwi_put_firmware(struct iwi_softc *);
 194 static void     iwi_monitor_scan(void *, int);
 195 static int      iwi_scanchan(struct iwi_softc *, unsigned long, int);
 196 static void     iwi_scan_start(struct ieee80211com *);
 197 static void     iwi_scan_end(struct ieee80211com *);
 198 static void     iwi_set_channel(struct ieee80211com *);
 199 static void     iwi_scan_curchan(struct ieee80211_scan_state *, unsigned long maxdwell);
 200 static void     iwi_scan_mindwell(struct ieee80211_scan_state *);
 201 static int      iwi_auth_and_assoc(struct iwi_softc *, struct ieee80211vap *);
 202 static void     iwi_disassoc(void *, int);
 203 static int      iwi_disassociate(struct iwi_softc *, int quiet);
 204 static void     iwi_init_locked(struct iwi_softc *);
 205 static void     iwi_init(void *);
 206 static int      iwi_init_fw_dma(struct iwi_softc *, int);
 207 static void     iwi_stop_locked(void *);
 208 static void     iwi_stop(struct iwi_softc *);
 209 static void     iwi_restart(void *, int);
 210 static int      iwi_getrfkill(struct iwi_softc *);
 211 static void     iwi_radio_on(void *, int);
 212 static void     iwi_radio_off(void *, int);
 213 static void     iwi_sysctlattach(struct iwi_softc *);
 214 static void     iwi_led_event(struct iwi_softc *, int);
 215 static void     iwi_ledattach(struct iwi_softc *);
 216 static void     iwi_collect_bands(struct ieee80211com *, uint8_t [], size_t);
 217 static void     iwi_getradiocaps(struct ieee80211com *, int, int *,
 218                     struct ieee80211_channel []);
 219
 220 static int iwi_probe(device_t);
 221 static int iwi_attach(device_t);
 222 static int iwi_detach(device_t);
 223 static int iwi_shutdown(device_t);
 224 static int iwi_suspend(device_t);
 225 static int iwi_resume(device_t);
 226
 227 static device_method_t iwi_methods[] = {
 228         /* Device interface */
 229         DEVMETHOD(device_probe,         iwi_probe),
 230         DEVMETHOD(device_attach,        iwi_attach),
 231         DEVMETHOD(device_detach,        iwi_detach),
 232         DEVMETHOD(device_shutdown,      iwi_shutdown),
 233         DEVMETHOD(device_suspend,       iwi_suspend),
 234         DEVMETHOD(device_resume,        iwi_resume),
 235
 236         DEVMETHOD_END
 237 };
 238
 239 static driver_t iwi_driver = {
 240         "iwi",
 241         iwi_methods,
 242         sizeof (struct iwi_softc)
 243 };
 244
 245 static devclass_t iwi_devclass;
 246
 247 DRIVER_MODULE(iwi, pci, iwi_driver, iwi_devclass, NULL, NULL);
 248
 249 MODULE_VERSION(iwi, 1);
 250
 251 static __inline uint8_t
 252 MEM_READ_1(struct iwi_softc *sc, uint32_t addr)
 253 {
 254         CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
 255         return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA);
 256 }
 257
 258 static __inline uint32_t
 259 MEM_READ_4(struct iwi_softc *sc, uint32_t addr)
 260 {
 261         CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
 262         return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA);
 263 }
 264
 265 static int
 266 iwi_probe(device_t dev)
 267 {
 268         const struct iwi_ident *ident;
 269
 270         for (ident = iwi_ident_table; ident->name != NULL; ident++) {
 271                 if (pci_get_vendor(dev) == ident->vendor &&
 272                     pci_get_device(dev) == ident->device) {
 273                         device_set_desc(dev, ident->name);
 274                         return (BUS_PROBE_DEFAULT);
 275                 }
 276         }
 277         return ENXIO;
 278 }
 279
 280 static int
 281 iwi_attach(device_t dev)
 282 {
 283         struct iwi_softc *sc = device_get_softc(dev);
 284         struct ieee80211com *ic = &sc->sc_ic;
 285         uint16_t val;
 286         int i, error;
 287
 288         sc->sc_dev = dev;
 289         sc->sc_ledevent = ticks;
 290
 291         IWI_LOCK_INIT(sc);
 292         mbufq_init(&sc->sc_snd, ifqmaxlen);
 293
 294         sc->sc_unr = new_unrhdr(1, IWI_MAX_IBSSNODE-1, &sc->sc_mtx);
 295
 296         TASK_INIT(&sc->sc_radiontask, 0, iwi_radio_on, sc);
 297         TASK_INIT(&sc->sc_radiofftask, 0, iwi_radio_off, sc);
 298         TASK_INIT(&sc->sc_restarttask, 0, iwi_restart, sc);
 299         TASK_INIT(&sc->sc_disassoctask, 0, iwi_disassoc, sc);
 300         TASK_INIT(&sc->sc_monitortask, 0, iwi_monitor_scan, sc);
 301
 302         callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
 303         callout_init_mtx(&sc->sc_rftimer, &sc->sc_mtx, 0);
 304
 305         pci_write_config(dev, 0x41, 0, 1);
 306
 307         /* enable bus-mastering */
 308         pci_enable_busmaster(dev);
 309
 310         i = PCIR_BAR(0);
 311         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
 312         if (sc->mem == NULL) {
 313                 device_printf(dev, "could not allocate memory resource\n");
 314                 goto fail;
 315         }
 316
 317         sc->sc_st = rman_get_bustag(sc->mem);
 318         sc->sc_sh = rman_get_bushandle(sc->mem);
 319
 320         i = 0;
 321         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
 322             RF_ACTIVE | RF_SHAREABLE);
 323         if (sc->irq == NULL) {
 324                 device_printf(dev, "could not allocate interrupt resource\n");
 325                 goto fail;
 326         }
 327
 328         if (iwi_reset(sc) != 0) {
 329                 device_printf(dev, "could not reset adapter\n");
 330                 goto fail;
 331         }
 332
 333         /*
 334          * Allocate rings.
 335          */
 336         if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) {
 337                 device_printf(dev, "could not allocate Cmd ring\n");
 338                 goto fail;
 339         }
 340
 341         for (i = 0; i < 4; i++) {
 342                 error = iwi_alloc_tx_ring(sc, &sc->txq[i], IWI_TX_RING_COUNT,
 343                     IWI_CSR_TX1_RIDX + i * 4,
 344                     IWI_CSR_TX1_WIDX + i * 4);
 345                 if (error != 0) {
 346                         device_printf(dev, "could not allocate Tx ring %d\n",
 347                                 i+i);
 348                         goto fail;
 349                 }
 350         }
 351
 352         if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) {
 353                 device_printf(dev, "could not allocate Rx ring\n");
 354                 goto fail;
 355         }
 356
 357         iwi_wme_init(sc);
 358
 359         ic->ic_softc = sc;
 360         ic->ic_name = device_get_nameunit(dev);
 361         ic->ic_opmode = IEEE80211_M_STA;
 362         ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
 363
 364         /* set device capabilities */
 365         ic->ic_caps =
 366               IEEE80211_C_STA           /* station mode supported */
 367             | IEEE80211_C_IBSS          /* IBSS mode supported */
 368             | IEEE80211_C_MONITOR       /* monitor mode supported */
 369             | IEEE80211_C_PMGT          /* power save supported */
 370             | IEEE80211_C_SHPREAMBLE    /* short preamble supported */
 371             | IEEE80211_C_WPA           /* 802.11i */
 372             | IEEE80211_C_WME           /* 802.11e */
 373 #if 0
 374             | IEEE80211_C_BGSCAN        /* capable of bg scanning */
 375 #endif
 376             ;
 377
 378         /* read MAC address from EEPROM */
 379         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0);
 380         ic->ic_macaddr[0] = val & 0xff;
 381         ic->ic_macaddr[1] = val >> 8;
 382         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1);
 383         ic->ic_macaddr[2] = val & 0xff;
 384         ic->ic_macaddr[3] = val >> 8;
 385         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2);
 386         ic->ic_macaddr[4] = val & 0xff;
 387         ic->ic_macaddr[5] = val >> 8;
 388
 389         iwi_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
 390             ic->ic_channels);
 391
 392         ieee80211_ifattach(ic);
 393         /* override default methods */
 394         ic->ic_node_alloc = iwi_node_alloc;
 395         sc->sc_node_free = ic->ic_node_free;
 396         ic->ic_node_free = iwi_node_free;
 397         ic->ic_raw_xmit = iwi_raw_xmit;
 398         ic->ic_scan_start = iwi_scan_start;
 399         ic->ic_scan_end = iwi_scan_end;
 400         ic->ic_set_channel = iwi_set_channel;
 401         ic->ic_scan_curchan = iwi_scan_curchan;
 402         ic->ic_scan_mindwell = iwi_scan_mindwell;
 403         ic->ic_wme.wme_update = iwi_wme_update;
 404
 405         ic->ic_vap_create = iwi_vap_create;
 406         ic->ic_vap_delete = iwi_vap_delete;
 407         ic->ic_ioctl = iwi_ioctl;
 408         ic->ic_transmit = iwi_transmit;
 409         ic->ic_parent = iwi_parent;
 410         ic->ic_getradiocaps = iwi_getradiocaps;
 411
 412         ieee80211_radiotap_attach(ic,
 413             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 414                 IWI_TX_RADIOTAP_PRESENT,
 415             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 416                 IWI_RX_RADIOTAP_PRESENT);
 417
 418         iwi_sysctlattach(sc);
 419         iwi_ledattach(sc);
 420
 421         /*
 422          * Hook our interrupt after all initialization is complete.
 423          */
 424         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 425             NULL, iwi_intr, sc, &sc->sc_ih);
 426         if (error != 0) {
 427                 device_printf(dev, "could not set up interrupt\n");
 428                 goto fail;
 429         }
 430
 431         if (bootverbose)
 432                 ieee80211_announce(ic);
 433
 434         return 0;
 435 fail:
 436         /* XXX fix */
 437         iwi_detach(dev);
 438         return ENXIO;
 439 }
 440
 441 static int
 442 iwi_detach(device_t dev)
 443 {
 444         struct iwi_softc *sc = device_get_softc(dev);
 445         struct ieee80211com *ic = &sc->sc_ic;
 446
 447         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 448
 449         /* NB: do early to drain any pending tasks */
 450         ieee80211_draintask(ic, &sc->sc_radiontask);
 451         ieee80211_draintask(ic, &sc->sc_radiofftask);
 452         ieee80211_draintask(ic, &sc->sc_restarttask);
 453         ieee80211_draintask(ic, &sc->sc_disassoctask);
 454         ieee80211_draintask(ic, &sc->sc_monitortask);
 455
 456         iwi_stop(sc);
 457
 458         ieee80211_ifdetach(ic);
 459
 460         iwi_put_firmware(sc);
 461         iwi_release_fw_dma(sc);
 462
 463         iwi_free_cmd_ring(sc, &sc->cmdq);
 464         iwi_free_tx_ring(sc, &sc->txq[0]);
 465         iwi_free_tx_ring(sc, &sc->txq[1]);
 466         iwi_free_tx_ring(sc, &sc->txq[2]);
 467         iwi_free_tx_ring(sc, &sc->txq[3]);
 468         iwi_free_rx_ring(sc, &sc->rxq);
 469
 470         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 471
 472         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
 473             sc->mem);
 474
 475         delete_unrhdr(sc->sc_unr);
 476         mbufq_drain(&sc->sc_snd);
 477
 478         IWI_LOCK_DESTROY(sc);
 479
 480         return 0;
 481 }
 482
 483 static struct ieee80211vap *
 484 iwi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 485     enum ieee80211_opmode opmode, int flags,
 486     const uint8_t bssid[IEEE80211_ADDR_LEN],
 487     const uint8_t mac[IEEE80211_ADDR_LEN])
 488 {
 489         struct iwi_softc *sc = ic->ic_softc;
 490         struct iwi_vap *ivp;
 491         struct ieee80211vap *vap;
 492         int i;
 493
 494         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 495                 return NULL;
 496         /*
 497          * Get firmware image (and possibly dma memory) on mode change.
 498          */
 499         if (iwi_get_firmware(sc, opmode))
 500                 return NULL;
 501         /* allocate DMA memory for mapping firmware image */
 502         i = sc->fw_fw.size;
 503         if (sc->fw_boot.size > i)
 504                 i = sc->fw_boot.size;
 505         /* XXX do we dma the ucode as well ? */
 506         if (sc->fw_uc.size > i)
 507                 i = sc->fw_uc.size;
 508         if (iwi_init_fw_dma(sc, i))
 509                 return NULL;
 510
 511         ivp = malloc(sizeof(struct iwi_vap), M_80211_VAP, M_WAITOK | M_ZERO);
 512         vap = &ivp->iwi_vap;
 513         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
 514         /* override the default, the setting comes from the linux driver */
 515         vap->iv_bmissthreshold = 24;
 516         /* override with driver methods */
 517         ivp->iwi_newstate = vap->iv_newstate;
 518         vap->iv_newstate = iwi_newstate;
 519
 520         /* complete setup */
 521         ieee80211_vap_attach(vap, ieee80211_media_change, iwi_media_status,
 522             mac);
 523         ic->ic_opmode = opmode;
 524         return vap;
 525 }
 526
 527 static void
 528 iwi_vap_delete(struct ieee80211vap *vap)
 529 {
 530         struct iwi_vap *ivp = IWI_VAP(vap);
 531
 532         ieee80211_vap_detach(vap);
 533         free(ivp, M_80211_VAP);
 534 }
 535
 536 static void
 537 iwi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
 538 {
 539         if (error != 0)
 540                 return;
 541
 542         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
 543
 544         *(bus_addr_t *)arg = segs[0].ds_addr;
 545 }
 546
 547 static int
 548 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, int count)
 549 {
 550         int error;
 551
 552         ring->count = count;
 553         ring->queued = 0;
 554         ring->cur = ring->next = 0;
 555
 556         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
 557             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 558             count * IWI_CMD_DESC_SIZE, 1, count * IWI_CMD_DESC_SIZE, 0,
 559             NULL, NULL, &ring->desc_dmat);
 560         if (error != 0) {
 561                 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
 562                 goto fail;
 563         }
 564
 565         error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
 566             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
 567         if (error != 0) {
 568                 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
 569                 goto fail;
 570         }
 571
 572         error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
 573             count * IWI_CMD_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
 574         if (error != 0) {
 575                 device_printf(sc->sc_dev, "could not load desc DMA map\n");
 576                 goto fail;
 577         }
 578
 579         return 0;
 580
 581 fail:   iwi_free_cmd_ring(sc, ring);
 582         return error;
 583 }
 584
 585 static void
 586 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
 587 {
 588         ring->queued = 0;
 589         ring->cur = ring->next = 0;
 590 }
 591
 592 static void
 593 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
 594 {
 595         if (ring->desc != NULL) {
 596                 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
 597                     BUS_DMASYNC_POSTWRITE);
 598                 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
 599                 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
 600         }
 601
 602         if (ring->desc_dmat != NULL)
 603                 bus_dma_tag_destroy(ring->desc_dmat);
 604 }
 605
 606 static int
 607 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, int count,
 608     bus_addr_t csr_ridx, bus_addr_t csr_widx)
 609 {
 610         int i, error;
 611
 612         ring->count = count;
 613         ring->queued = 0;
 614         ring->cur = ring->next = 0;
 615         ring->csr_ridx = csr_ridx;
 616         ring->csr_widx = csr_widx;
 617
 618         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
 619             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 620             count * IWI_TX_DESC_SIZE, 1, count * IWI_TX_DESC_SIZE, 0, NULL,
 621             NULL, &ring->desc_dmat);
 622         if (error != 0) {
 623                 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
 624                 goto fail;
 625         }
 626
 627         error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
 628             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
 629         if (error != 0) {
 630                 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
 631                 goto fail;
 632         }
 633
 634         error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
 635             count * IWI_TX_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
 636         if (error != 0) {
 637                 device_printf(sc->sc_dev, "could not load desc DMA map\n");
 638                 goto fail;
 639         }
 640
 641         ring->data = malloc(count * sizeof (struct iwi_tx_data), M_DEVBUF,
 642             M_NOWAIT | M_ZERO);
 643         if (ring->data == NULL) {
 644                 device_printf(sc->sc_dev, "could not allocate soft data\n");
 645                 error = ENOMEM;
 646                 goto fail;
 647         }
 648
 649         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 650         BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
 651         IWI_MAX_NSEG, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
 652         if (error != 0) {
 653                 device_printf(sc->sc_dev, "could not create data DMA tag\n");
 654                 goto fail;
 655         }
 656
 657         for (i = 0; i < count; i++) {
 658                 error = bus_dmamap_create(ring->data_dmat, 0,
 659                     &ring->data[i].map);
 660                 if (error != 0) {
 661                         device_printf(sc->sc_dev, "could not create DMA map\n");
 662                         goto fail;
 663                 }
 664         }
 665
 666         return 0;
 667
 668 fail:   iwi_free_tx_ring(sc, ring);
 669         return error;
 670 }
 671
 672 static void
 673 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
 674 {
 675         struct iwi_tx_data *data;
 676         int i;
 677
 678         for (i = 0; i < ring->count; i++) {
 679                 data = &ring->data[i];
 680
 681                 if (data->m != NULL) {
 682                         bus_dmamap_sync(ring->data_dmat, data->map,
 683                             BUS_DMASYNC_POSTWRITE);
 684                         bus_dmamap_unload(ring->data_dmat, data->map);
 685                         m_freem(data->m);
 686                         data->m = NULL;
 687                 }
 688
 689                 if (data->ni != NULL) {
 690                         ieee80211_free_node(data->ni);
 691                         data->ni = NULL;
 692                 }
 693         }
 694
 695         ring->queued = 0;
 696         ring->cur = ring->next = 0;
 697 }
 698
 699 static void
 700 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
 701 {
 702         struct iwi_tx_data *data;
 703         int i;
 704
 705         if (ring->desc != NULL) {
 706                 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
 707                     BUS_DMASYNC_POSTWRITE);
 708                 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
 709                 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
 710         }
 711
 712         if (ring->desc_dmat != NULL)
 713                 bus_dma_tag_destroy(ring->desc_dmat);
 714
 715         if (ring->data != NULL) {
 716                 for (i = 0; i < ring->count; i++) {
 717                         data = &ring->data[i];
 718
 719                         if (data->m != NULL) {
 720                                 bus_dmamap_sync(ring->data_dmat, data->map,
 721                                     BUS_DMASYNC_POSTWRITE);
 722                                 bus_dmamap_unload(ring->data_dmat, data->map);
 723                                 m_freem(data->m);
 724                         }
 725
 726                         if (data->ni != NULL)
 727                                 ieee80211_free_node(data->ni);
 728
 729                         if (data->map != NULL)
 730                                 bus_dmamap_destroy(ring->data_dmat, data->map);
 731                 }
 732
 733                 free(ring->data, M_DEVBUF);
 734         }
 735
 736         if (ring->data_dmat != NULL)
 737                 bus_dma_tag_destroy(ring->data_dmat);
 738 }
 739
 740 static int
 741 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, int count)
 742 {
 743         struct iwi_rx_data *data;
 744         int i, error;
 745
 746         ring->count = count;
 747         ring->cur = 0;
 748
 749         ring->data = malloc(count * sizeof (struct iwi_rx_data), M_DEVBUF,
 750             M_NOWAIT | M_ZERO);
 751         if (ring->data == NULL) {
 752                 device_printf(sc->sc_dev, "could not allocate soft data\n");
 753                 error = ENOMEM;
 754                 goto fail;
 755         }
 756
 757         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 758             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
 759             1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
 760         if (error != 0) {
 761                 device_printf(sc->sc_dev, "could not create data DMA tag\n");
 762                 goto fail;
 763         }
 764
 765         for (i = 0; i < count; i++) {
 766                 data = &ring->data[i];
 767
 768                 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
 769                 if (error != 0) {
 770                         device_printf(sc->sc_dev, "could not create DMA map\n");
 771                         goto fail;
 772                 }
 773
 774                 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 775                 if (data->m == NULL) {
 776                         device_printf(sc->sc_dev,
 777                             "could not allocate rx mbuf\n");
 778                         error = ENOMEM;
 779                         goto fail;
 780                 }
 781
 782                 error = bus_dmamap_load(ring->data_dmat, data->map,
 783                     mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
 784                     &data->physaddr, 0);
 785                 if (error != 0) {
 786                         device_printf(sc->sc_dev,
 787                             "could not load rx buf DMA map");
 788                         goto fail;
 789                 }
 790
 791                 data->reg = IWI_CSR_RX_BASE + i * 4;
 792         }
 793
 794         return 0;
 795
 796 fail:   iwi_free_rx_ring(sc, ring);
 797         return error;
 798 }
 799
 800 static void
 801 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
 802 {
 803         ring->cur = 0;
 804 }
 805
 806 static void
 807 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
 808 {
 809         struct iwi_rx_data *data;
 810         int i;
 811
 812         if (ring->data != NULL) {
 813                 for (i = 0; i < ring->count; i++) {
 814                         data = &ring->data[i];
 815
 816                         if (data->m != NULL) {
 817                                 bus_dmamap_sync(ring->data_dmat, data->map,
 818                                     BUS_DMASYNC_POSTREAD);
 819                                 bus_dmamap_unload(ring->data_dmat, data->map);
 820                                 m_freem(data->m);
 821                         }
 822
 823                         if (data->map != NULL)
 824                                 bus_dmamap_destroy(ring->data_dmat, data->map);
 825                 }
 826
 827                 free(ring->data, M_DEVBUF);
 828         }
 829
 830         if (ring->data_dmat != NULL)
 831                 bus_dma_tag_destroy(ring->data_dmat);
 832 }
 833
 834 static int
 835 iwi_shutdown(device_t dev)
 836 {
 837         struct iwi_softc *sc = device_get_softc(dev);
 838
 839         iwi_stop(sc);
 840         iwi_put_firmware(sc);           /* ??? XXX */
 841
 842         return 0;
 843 }
 844
 845 static int
 846 iwi_suspend(device_t dev)
 847 {
 848         struct iwi_softc *sc = device_get_softc(dev);
 849         struct ieee80211com *ic = &sc->sc_ic;
 850
 851         ieee80211_suspend_all(ic);
 852         return 0;
 853 }
 854
 855 static int
 856 iwi_resume(device_t dev)
 857 {
 858         struct iwi_softc *sc = device_get_softc(dev);
 859         struct ieee80211com *ic = &sc->sc_ic;
 860
 861         pci_write_config(dev, 0x41, 0, 1);
 862
 863         ieee80211_resume_all(ic);
 864         return 0;
 865 }
 866
 867 static struct ieee80211_node *
 868 iwi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
 869 {
 870         struct iwi_node *in;
 871
 872         in = malloc(sizeof (struct iwi_node), M_80211_NODE, M_NOWAIT | M_ZERO);
 873         if (in == NULL)
 874                 return NULL;
 875         /* XXX assign sta table entry for adhoc */
 876         in->in_station = -1;
 877
 878         return &in->in_node;
 879 }
 880
 881 static void
 882 iwi_node_free(struct ieee80211_node *ni)
 883 {
 884         struct ieee80211com *ic = ni->ni_ic;
 885         struct iwi_softc *sc = ic->ic_softc;
 886         struct iwi_node *in = (struct iwi_node *)ni;
 887
 888         if (in->in_station != -1) {
 889                 DPRINTF(("%s mac %6D station %u\n", __func__,
 890                     ni->ni_macaddr, ":", in->in_station));
 891                 free_unr(sc->sc_unr, in->in_station);
 892         }
 893
 894         sc->sc_node_free(ni);
 895 }
 896
 897 /*
 898  * Convert h/w rate code to IEEE rate code.
 899  */
 900 static int
 901 iwi_cvtrate(int iwirate)
 902 {
 903         switch (iwirate) {
 904         case IWI_RATE_DS1:      return 2;
 905         case IWI_RATE_DS2:      return 4;
 906         case IWI_RATE_DS5:      return 11;
 907         case IWI_RATE_DS11:     return 22;
 908         case IWI_RATE_OFDM6:    return 12;
 909         case IWI_RATE_OFDM9:    return 18;
 910         case IWI_RATE_OFDM12:   return 24;
 911         case IWI_RATE_OFDM18:   return 36;
 912         case IWI_RATE_OFDM24:   return 48;
 913         case IWI_RATE_OFDM36:   return 72;
 914         case IWI_RATE_OFDM48:   return 96;
 915         case IWI_RATE_OFDM54:   return 108;
 916         }
 917         return 0;
 918 }
 919
 920 /*
 921  * The firmware automatically adapts the transmit speed.  We report its current
 922  * value here.
 923  */
 924 static void
 925 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 926 {
 927         struct ieee80211vap *vap = ifp->if_softc;
 928         struct ieee80211com *ic = vap->iv_ic;
 929         struct iwi_softc *sc = ic->ic_softc;
 930         struct ieee80211_node *ni;
 931
 932         /* read current transmission rate from adapter */
 933         ni = ieee80211_ref_node(vap->iv_bss);
 934         ni->ni_txrate =
 935             iwi_cvtrate(CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE));
 936         ieee80211_free_node(ni);
 937         ieee80211_media_status(ifp, imr);
 938 }
 939
 940 static int
 941 iwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 942 {
 943         struct iwi_vap *ivp = IWI_VAP(vap);
 944         struct ieee80211com *ic = vap->iv_ic;
 945         struct iwi_softc *sc = ic->ic_softc;
 946         IWI_LOCK_DECL;
 947
 948         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
 949                 ieee80211_state_name[vap->iv_state],
 950                 ieee80211_state_name[nstate], sc->flags));
 951
 952         IEEE80211_UNLOCK(ic);
 953         IWI_LOCK(sc);
 954         switch (nstate) {
 955         case IEEE80211_S_INIT:
 956                 /*
 957                  * NB: don't try to do this if iwi_stop_master has
 958                  *     shutdown the firmware and disabled interrupts.
 959                  */
 960                 if (vap->iv_state == IEEE80211_S_RUN &&
 961                     (sc->flags & IWI_FLAG_FW_INITED))
 962                         iwi_disassociate(sc, 0);
 963                 break;
 964         case IEEE80211_S_AUTH:
 965                 iwi_auth_and_assoc(sc, vap);
 966                 break;
 967         case IEEE80211_S_RUN:
 968                 if (vap->iv_opmode == IEEE80211_M_IBSS &&
 969                     vap->iv_state == IEEE80211_S_SCAN) {
 970                         /*
 971                          * XXX when joining an ibss network we are called
 972                          * with a SCAN -> RUN transition on scan complete.
 973                          * Use that to call iwi_auth_and_assoc.  On completing
 974                          * the join we are then called again with an
 975                          * AUTH -> RUN transition and we want to do nothing.
 976                          * This is all totally bogus and needs to be redone.
 977                          */
 978                         iwi_auth_and_assoc(sc, vap);
 979                 } else if (vap->iv_opmode == IEEE80211_M_MONITOR)
 980                         ieee80211_runtask(ic, &sc->sc_monitortask);
 981                 break;
 982         case IEEE80211_S_ASSOC:
 983                 /*
 984                  * If we are transitioning from AUTH then just wait
 985                  * for the ASSOC status to come back from the firmware.
 986                  * Otherwise we need to issue the association request.
 987                  */
 988                 if (vap->iv_state == IEEE80211_S_AUTH)
 989                         break;
 990                 iwi_auth_and_assoc(sc, vap);
 991                 break;
 992         default:
 993                 break;
 994         }
 995         IWI_UNLOCK(sc);
 996         IEEE80211_LOCK(ic);
 997         return ivp->iwi_newstate(vap, nstate, arg);
 998 }
 999
1000 /*
1001  * WME parameters coming from IEEE 802.11e specification.  These values are
1002  * already declared in ieee80211_proto.c, but they are static so they can't
1003  * be reused here.
1004  */
1005 static const struct wmeParams iwi_wme_cck_params[WME_NUM_AC] = {
1006         { 0, 3, 5,  7,   0 },   /* WME_AC_BE */
1007         { 0, 3, 5, 10,   0 },   /* WME_AC_BK */
1008         { 0, 2, 4,  5, 188 },   /* WME_AC_VI */
1009         { 0, 2, 3,  4, 102 }    /* WME_AC_VO */
1010 };
1011
1012 static const struct wmeParams iwi_wme_ofdm_params[WME_NUM_AC] = {
1013         { 0, 3, 4,  6,   0 },   /* WME_AC_BE */
1014         { 0, 3, 4, 10,   0 },   /* WME_AC_BK */
1015         { 0, 2, 3,  4,  94 },   /* WME_AC_VI */
1016         { 0, 2, 2,  3,  47 }    /* WME_AC_VO */
1017 };
1018 #define IWI_EXP2(v)     htole16((1 << (v)) - 1)
1019 #define IWI_USEC(v)     htole16(IEEE80211_TXOP_TO_US(v))
1020
1021 static void
1022 iwi_wme_init(struct iwi_softc *sc)
1023 {
1024         const struct wmeParams *wmep;
1025         int ac;
1026
1027         memset(sc->wme, 0, sizeof sc->wme);
1028         for (ac = 0; ac < WME_NUM_AC; ac++) {
1029                 /* set WME values for CCK modulation */
1030                 wmep = &iwi_wme_cck_params[ac];
1031                 sc->wme[1].aifsn[ac] = wmep->wmep_aifsn;
1032                 sc->wme[1].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1033                 sc->wme[1].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1034                 sc->wme[1].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1035                 sc->wme[1].acm[ac]   = wmep->wmep_acm;
1036
1037                 /* set WME values for OFDM modulation */
1038                 wmep = &iwi_wme_ofdm_params[ac];
1039                 sc->wme[2].aifsn[ac] = wmep->wmep_aifsn;
1040                 sc->wme[2].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1041                 sc->wme[2].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1042                 sc->wme[2].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1043                 sc->wme[2].acm[ac]   = wmep->wmep_acm;
1044         }
1045 }
1046
1047 static int
1048 iwi_wme_setparams(struct iwi_softc *sc)
1049 {
1050         struct ieee80211com *ic = &sc->sc_ic;
1051         const struct wmeParams *wmep;
1052         int ac;
1053
1054         for (ac = 0; ac < WME_NUM_AC; ac++) {
1055                 /* set WME values for current operating mode */
1056                 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac];
1057                 sc->wme[0].aifsn[ac] = wmep->wmep_aifsn;
1058                 sc->wme[0].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1059                 sc->wme[0].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1060                 sc->wme[0].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1061                 sc->wme[0].acm[ac]   = wmep->wmep_acm;
1062         }
1063
1064         DPRINTF(("Setting WME parameters\n"));
1065         return iwi_cmd(sc, IWI_CMD_SET_WME_PARAMS, sc->wme, sizeof sc->wme);
1066 }
1067 #undef IWI_USEC
1068 #undef IWI_EXP2
1069
1070 static int
1071 iwi_wme_update(struct ieee80211com *ic)
1072 {
1073         struct iwi_softc *sc = ic->ic_softc;
1074         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1075         IWI_LOCK_DECL;
1076
1077         /*
1078          * We may be called to update the WME parameters in
1079          * the adapter at various places.  If we're already
1080          * associated then initiate the request immediately;
1081          * otherwise we assume the params will get sent down
1082          * to the adapter as part of the work iwi_auth_and_assoc
1083          * does.
1084          */
1085         if (vap->iv_state == IEEE80211_S_RUN) {
1086                 IWI_LOCK(sc);
1087                 iwi_wme_setparams(sc);
1088                 IWI_UNLOCK(sc);
1089         }
1090         return (0);
1091 }
1092
1093 static int
1094 iwi_wme_setie(struct iwi_softc *sc)
1095 {
1096         struct ieee80211_wme_info wme;
1097
1098         memset(&wme, 0, sizeof wme);
1099         wme.wme_id = IEEE80211_ELEMID_VENDOR;
1100         wme.wme_len = sizeof (struct ieee80211_wme_info) - 2;
1101         wme.wme_oui[0] = 0x00;
1102         wme.wme_oui[1] = 0x50;
1103         wme.wme_oui[2] = 0xf2;
1104         wme.wme_type = WME_OUI_TYPE;
1105         wme.wme_subtype = WME_INFO_OUI_SUBTYPE;
1106         wme.wme_version = WME_VERSION;
1107         wme.wme_info = 0;
1108
1109         DPRINTF(("Setting WME IE (len=%u)\n", wme.wme_len));
1110         return iwi_cmd(sc, IWI_CMD_SET_WMEIE, &wme, sizeof wme);
1111 }
1112
1113 /*
1114  * Read 16 bits at address 'addr' from the serial EEPROM.
1115  */
1116 static uint16_t
1117 iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr)
1118 {
1119         uint32_t tmp;
1120         uint16_t val;
1121         int n;
1122
1123         /* clock C once before the first command */
1124         IWI_EEPROM_CTL(sc, 0);
1125         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1126         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1127         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1128
1129         /* write start bit (1) */
1130         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1131         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1132
1133         /* write READ opcode (10) */
1134         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1135         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1136         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1137         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1138
1139         /* write address A7-A0 */
1140         for (n = 7; n >= 0; n--) {
1141                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1142                     (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D));
1143                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1144                     (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C);
1145         }
1146
1147         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1148
1149         /* read data Q15-Q0 */
1150         val = 0;
1151         for (n = 15; n >= 0; n--) {
1152                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1153                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1154                 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL);
1155                 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n;
1156         }
1157
1158         IWI_EEPROM_CTL(sc, 0);
1159
1160         /* clear Chip Select and clock C */
1161         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1162         IWI_EEPROM_CTL(sc, 0);
1163         IWI_EEPROM_CTL(sc, IWI_EEPROM_C);
1164
1165         return val;
1166 }
1167
1168 static void
1169 iwi_setcurchan(struct iwi_softc *sc, int chan)
1170 {
1171         struct ieee80211com *ic = &sc->sc_ic;
1172
1173         sc->curchan = chan;
1174         ieee80211_radiotap_chan_change(ic);
1175 }
1176
1177 static void
1178 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i,
1179     struct iwi_frame *frame)
1180 {
1181         struct ieee80211com *ic = &sc->sc_ic;
1182         struct mbuf *mnew, *m;
1183         struct ieee80211_node *ni;
1184         int type, error, framelen;
1185         int8_t rssi, nf;
1186         IWI_LOCK_DECL;
1187
1188         framelen = le16toh(frame->len);
1189         if (framelen < IEEE80211_MIN_LEN || framelen > MCLBYTES) {
1190                 /*
1191                  * XXX >MCLBYTES is bogus as it means the h/w dma'd
1192                  *     out of bounds; need to figure out how to limit
1193                  *     frame size in the firmware
1194                  */
1195                 /* XXX stat */
1196                 DPRINTFN(1,
1197                     ("drop rx frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1198                     le16toh(frame->len), frame->chan, frame->rssi,
1199                     frame->rssi_dbm));
1200                 return;
1201         }
1202
1203         DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1204             le16toh(frame->len), frame->chan, frame->rssi, frame->rssi_dbm));
1205
1206         if (frame->chan != sc->curchan)
1207                 iwi_setcurchan(sc, frame->chan);
1208
1209         /*
1210          * Try to allocate a new mbuf for this ring element and load it before
1211          * processing the current mbuf. If the ring element cannot be loaded,
1212          * drop the received packet and reuse the old mbuf. In the unlikely
1213          * case that the old mbuf can't be reloaded either, explicitly panic.
1214          */
1215         mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1216         if (mnew == NULL) {
1217                 counter_u64_add(ic->ic_ierrors, 1);
1218                 return;
1219         }
1220
1221         bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1222
1223         error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1224             mtod(mnew, void *), MCLBYTES, iwi_dma_map_addr, &data->physaddr,
1225             0);
1226         if (error != 0) {
1227                 m_freem(mnew);
1228
1229                 /* try to reload the old mbuf */
1230                 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1231                     mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
1232                     &data->physaddr, 0);
1233                 if (error != 0) {
1234                         /* very unlikely that it will fail... */
1235                         panic("%s: could not load old rx mbuf",
1236                             device_get_name(sc->sc_dev));
1237                 }
1238                 counter_u64_add(ic->ic_ierrors, 1);
1239                 return;
1240         }
1241
1242         /*
1243          * New mbuf successfully loaded, update Rx ring and continue
1244          * processing.
1245          */
1246         m = data->m;
1247         data->m = mnew;
1248         CSR_WRITE_4(sc, data->reg, data->physaddr);
1249
1250         /* finalize mbuf */
1251         m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) +
1252             sizeof (struct iwi_frame) + framelen;
1253
1254         m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame));
1255
1256         rssi = frame->rssi_dbm;
1257         nf = -95;
1258         if (ieee80211_radiotap_active(ic)) {
1259                 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap;
1260
1261                 tap->wr_flags = 0;
1262                 tap->wr_antsignal = rssi;
1263                 tap->wr_antnoise = nf;
1264                 tap->wr_rate = iwi_cvtrate(frame->rate);
1265                 tap->wr_antenna = frame->antenna;
1266         }
1267         IWI_UNLOCK(sc);
1268
1269         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1270         if (ni != NULL) {
1271                 type = ieee80211_input(ni, m, rssi, nf);
1272                 ieee80211_free_node(ni);
1273         } else
1274                 type = ieee80211_input_all(ic, m, rssi, nf);
1275
1276         IWI_LOCK(sc);
1277         if (sc->sc_softled) {
1278                 /*
1279                  * Blink for any data frame.  Otherwise do a
1280                  * heartbeat-style blink when idle.  The latter
1281                  * is mainly for station mode where we depend on
1282                  * periodic beacon frames to trigger the poll event.
1283                  */
1284                 if (type == IEEE80211_FC0_TYPE_DATA) {
1285                         sc->sc_rxrate = frame->rate;
1286                         iwi_led_event(sc, IWI_LED_RX);
1287                 } else if (ticks - sc->sc_ledevent >= sc->sc_ledidle)
1288                         iwi_led_event(sc, IWI_LED_POLL);
1289         }
1290 }
1291
1292 /*
1293  * Check for an association response frame to see if QoS
1294  * has been negotiated.  We parse just enough to figure
1295  * out if we're supposed to use QoS.  The proper solution
1296  * is to pass the frame up so ieee80211_input can do the
1297  * work but that's made hard by how things currently are
1298  * done in the driver.
1299  */
1300 static void
1301 iwi_checkforqos(struct ieee80211vap *vap,
1302         const struct ieee80211_frame *wh, int len)
1303 {
1304 #define SUBTYPE(wh)     ((wh)->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
1305         const uint8_t *frm, *efrm, *wme;
1306         struct ieee80211_node *ni;
1307         uint16_t capinfo, status, associd;
1308
1309         /* NB: +8 for capinfo, status, associd, and first ie */
1310         if (!(sizeof(*wh)+8 < len && len < IEEE80211_MAX_LEN) ||
1311             SUBTYPE(wh) != IEEE80211_FC0_SUBTYPE_ASSOC_RESP)
1312                 return;
1313         /*
1314          * asresp frame format
1315          *      [2] capability information
1316          *      [2] status
1317          *      [2] association ID
1318          *      [tlv] supported rates
1319          *      [tlv] extended supported rates
1320          *      [tlv] WME
1321          */
1322         frm = (const uint8_t *)&wh[1];
1323         efrm = ((const uint8_t *) wh) + len;
1324
1325         capinfo = le16toh(*(const uint16_t *)frm);
1326         frm += 2;
1327         status = le16toh(*(const uint16_t *)frm);
1328         frm += 2;
1329         associd = le16toh(*(const uint16_t *)frm);
1330         frm += 2;
1331
1332         wme = NULL;
1333         while (efrm - frm > 1) {
1334                 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return);
1335                 switch (*frm) {
1336                 case IEEE80211_ELEMID_VENDOR:
1337                         if (iswmeoui(frm))
1338                                 wme = frm;
1339                         break;
1340                 }
1341                 frm += frm[1] + 2;
1342         }
1343
1344         ni = ieee80211_ref_node(vap->iv_bss);
1345         ni->ni_capinfo = capinfo;
1346         ni->ni_associd = associd & 0x3fff;
1347         if (wme != NULL)
1348                 ni->ni_flags |= IEEE80211_NODE_QOS;
1349         else
1350                 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1351         ieee80211_free_node(ni);
1352 #undef SUBTYPE
1353 }
1354
1355 static void
1356 iwi_notif_link_quality(struct iwi_softc *sc, struct iwi_notif *notif)
1357 {
1358         struct iwi_notif_link_quality *lq;
1359         int len;
1360
1361         len = le16toh(notif->len);
1362
1363         DPRINTFN(5, ("Notification (%u) - len=%d, sizeof=%zu\n",
1364             notif->type,
1365             len,
1366             sizeof(struct iwi_notif_link_quality)
1367             ));
1368
1369         /* enforce length */
1370         if (len != sizeof(struct iwi_notif_link_quality)) {
1371                 DPRINTFN(5, ("Notification: (%u) too short (%d)\n",
1372                     notif->type,
1373                     len));
1374                 return;
1375         }
1376
1377         lq = (struct iwi_notif_link_quality *)(notif + 1);
1378         memcpy(&sc->sc_linkqual, lq, sizeof(sc->sc_linkqual));
1379         sc->sc_linkqual_valid = 1;
1380 }
1381
1382 /*
1383  * Task queue callbacks for iwi_notification_intr used to avoid LOR's.
1384  */
1385
1386 static void
1387 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif)
1388 {
1389         struct ieee80211com *ic = &sc->sc_ic;
1390         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1391         struct iwi_notif_scan_channel *chan;
1392         struct iwi_notif_scan_complete *scan;
1393         struct iwi_notif_authentication *auth;
1394         struct iwi_notif_association *assoc;
1395         struct iwi_notif_beacon_state *beacon;
1396
1397         switch (notif->type) {
1398         case IWI_NOTIF_TYPE_SCAN_CHANNEL:
1399                 chan = (struct iwi_notif_scan_channel *)(notif + 1);
1400
1401                 DPRINTFN(3, ("Scan of channel %u complete (%u)\n",
1402                     ieee80211_ieee2mhz(chan->nchan, 0), chan->nchan));
1403
1404                 /* Reset the timer, the scan is still going */
1405                 sc->sc_state_timer = 3;
1406                 break;
1407
1408         case IWI_NOTIF_TYPE_SCAN_COMPLETE:
1409                 scan = (struct iwi_notif_scan_complete *)(notif + 1);
1410
1411                 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan,
1412                     scan->status));
1413
1414                 IWI_STATE_END(sc, IWI_FW_SCANNING);
1415
1416                 /*
1417                  * Monitor mode works by doing a passive scan to set
1418                  * the channel and enable rx.  Because we don't want
1419                  * to abort a scan lest the firmware crash we scan
1420                  * for a short period of time and automatically restart
1421                  * the scan when notified the sweep has completed.
1422                  */
1423                 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
1424                         ieee80211_runtask(ic, &sc->sc_monitortask);
1425                         break;
1426                 }
1427
1428                 if (scan->status == IWI_SCAN_COMPLETED) {
1429                         /* NB: don't need to defer, net80211 does it for us */
1430                         ieee80211_scan_next(vap);
1431                 }
1432                 break;
1433
1434         case IWI_NOTIF_TYPE_AUTHENTICATION:
1435                 auth = (struct iwi_notif_authentication *)(notif + 1);
1436                 switch (auth->state) {
1437                 case IWI_AUTH_SUCCESS:
1438                         DPRINTFN(2, ("Authentication succeeeded\n"));
1439                         ieee80211_new_state(vap, IEEE80211_S_ASSOC, -1);
1440                         break;
1441                 case IWI_AUTH_FAIL:
1442                         /*
1443                          * These are delivered as an unsolicited deauth
1444                          * (e.g. due to inactivity) or in response to an
1445                          * associate request.
1446                          */
1447                         sc->flags &= ~IWI_FLAG_ASSOCIATED;
1448                         if (vap->iv_state != IEEE80211_S_RUN) {
1449                                 DPRINTFN(2, ("Authentication failed\n"));
1450                                 vap->iv_stats.is_rx_auth_fail++;
1451                                 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1452                         } else {
1453                                 DPRINTFN(2, ("Deauthenticated\n"));
1454                                 vap->iv_stats.is_rx_deauth++;
1455                         }
1456                         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1457                         break;
1458                 case IWI_AUTH_SENT_1:
1459                 case IWI_AUTH_RECV_2:
1460                 case IWI_AUTH_SEQ1_PASS:
1461                         break;
1462                 case IWI_AUTH_SEQ1_FAIL:
1463                         DPRINTFN(2, ("Initial authentication handshake failed; "
1464                                 "you probably need shared key\n"));
1465                         vap->iv_stats.is_rx_auth_fail++;
1466                         IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1467                         /* XXX retry shared key when in auto */
1468                         break;
1469                 default:
1470                         device_printf(sc->sc_dev,
1471                             "unknown authentication state %u\n", auth->state);
1472                         break;
1473                 }
1474                 break;
1475
1476         case IWI_NOTIF_TYPE_ASSOCIATION:
1477                 assoc = (struct iwi_notif_association *)(notif + 1);
1478                 switch (assoc->state) {
1479                 case IWI_AUTH_SUCCESS:
1480                         /* re-association, do nothing */
1481                         break;
1482                 case IWI_ASSOC_SUCCESS:
1483                         DPRINTFN(2, ("Association succeeded\n"));
1484                         sc->flags |= IWI_FLAG_ASSOCIATED;
1485                         IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1486                         iwi_checkforqos(vap,
1487                             (const struct ieee80211_frame *)(assoc+1),
1488                             le16toh(notif->len) - sizeof(*assoc) - 1);
1489                         ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
1490                         break;
1491                 case IWI_ASSOC_INIT:
1492                         sc->flags &= ~IWI_FLAG_ASSOCIATED;
1493                         switch (sc->fw_state) {
1494                         case IWI_FW_ASSOCIATING:
1495                                 DPRINTFN(2, ("Association failed\n"));
1496                                 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1497                                 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1498                                 break;
1499
1500                         case IWI_FW_DISASSOCIATING:
1501                                 DPRINTFN(2, ("Dissassociated\n"));
1502                                 IWI_STATE_END(sc, IWI_FW_DISASSOCIATING);
1503                                 vap->iv_stats.is_rx_disassoc++;
1504                                 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1505                                 break;
1506                         }
1507                         break;
1508                 default:
1509                         device_printf(sc->sc_dev,
1510                             "unknown association state %u\n", assoc->state);
1511                         break;
1512                 }
1513                 break;
1514
1515         case IWI_NOTIF_TYPE_BEACON:
1516                 /* XXX check struct length */
1517                 beacon = (struct iwi_notif_beacon_state *)(notif + 1);
1518
1519                 DPRINTFN(5, ("Beacon state (%u, %u)\n",
1520                     beacon->state, le32toh(beacon->number)));
1521
1522                 if (beacon->state == IWI_BEACON_MISS) {
1523                         /*
1524                          * The firmware notifies us of every beacon miss
1525                          * so we need to track the count against the
1526                          * configured threshold before notifying the
1527                          * 802.11 layer.
1528                          * XXX try to roam, drop assoc only on much higher count
1529                          */
1530                         if (le32toh(beacon->number) >= vap->iv_bmissthreshold) {
1531                                 DPRINTF(("Beacon miss: %u >= %u\n",
1532                                     le32toh(beacon->number),
1533                                     vap->iv_bmissthreshold));
1534                                 vap->iv_stats.is_beacon_miss++;
1535                                 /*
1536                                  * It's pointless to notify the 802.11 layer
1537                                  * as it'll try to send a probe request (which
1538                                  * we'll discard) and then timeout and drop us
1539                                  * into scan state.  Instead tell the firmware
1540                                  * to disassociate and then on completion we'll
1541                                  * kick the state machine to scan.
1542                                  */
1543                                 ieee80211_runtask(ic, &sc->sc_disassoctask);
1544                         }
1545                 }
1546                 break;
1547
1548         case IWI_NOTIF_TYPE_CALIBRATION:
1549         case IWI_NOTIF_TYPE_NOISE:
1550                 /* XXX handle? */
1551                 DPRINTFN(5, ("Notification (%u)\n", notif->type));
1552                 break;
1553         case IWI_NOTIF_TYPE_LINK_QUALITY:
1554                 iwi_notif_link_quality(sc, notif);
1555                 break;
1556
1557         default:
1558                 DPRINTF(("unknown notification type %u flags 0x%x len %u\n",
1559                     notif->type, notif->flags, le16toh(notif->len)));
1560                 break;
1561         }
1562 }
1563
1564 static void
1565 iwi_rx_intr(struct iwi_softc *sc)
1566 {
1567         struct iwi_rx_data *data;
1568         struct iwi_hdr *hdr;
1569         uint32_t hw;
1570
1571         hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX);
1572
1573         for (; sc->rxq.cur != hw;) {
1574                 data = &sc->rxq.data[sc->rxq.cur];
1575
1576                 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1577                     BUS_DMASYNC_POSTREAD);
1578
1579                 hdr = mtod(data->m, struct iwi_hdr *);
1580
1581                 switch (hdr->type) {
1582                 case IWI_HDR_TYPE_FRAME:
1583                         iwi_frame_intr(sc, data, sc->rxq.cur,
1584                             (struct iwi_frame *)(hdr + 1));
1585                         break;
1586
1587                 case IWI_HDR_TYPE_NOTIF:
1588                         iwi_notification_intr(sc,
1589                             (struct iwi_notif *)(hdr + 1));
1590                         break;
1591
1592                 default:
1593                         device_printf(sc->sc_dev, "unknown hdr type %u\n",
1594                             hdr->type);
1595                 }
1596
1597                 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1598
1599                 sc->rxq.cur = (sc->rxq.cur + 1) % IWI_RX_RING_COUNT;
1600         }
1601
1602         /* tell the firmware what we have processed */
1603         hw = (hw == 0) ? IWI_RX_RING_COUNT - 1 : hw - 1;
1604         CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw);
1605 }
1606
1607 static void
1608 iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq)
1609 {
1610         struct iwi_tx_data *data;
1611         uint32_t hw;
1612
1613         hw = CSR_READ_4(sc, txq->csr_ridx);
1614
1615         while (txq->next != hw) {
1616                 data = &txq->data[txq->next];
1617                 DPRINTFN(15, ("tx done idx=%u\n", txq->next));
1618                 bus_dmamap_sync(txq->data_dmat, data->map,
1619                     BUS_DMASYNC_POSTWRITE);
1620                 bus_dmamap_unload(txq->data_dmat, data->map);
1621                 ieee80211_tx_complete(data->ni, data->m, 0);
1622                 data->ni = NULL;
1623                 data->m = NULL;
1624                 txq->queued--;
1625                 txq->next = (txq->next + 1) % IWI_TX_RING_COUNT;
1626         }
1627         sc->sc_tx_timer = 0;
1628         if (sc->sc_softled)
1629                 iwi_led_event(sc, IWI_LED_TX);
1630         iwi_start(sc);
1631 }
1632
1633 static void
1634 iwi_fatal_error_intr(struct iwi_softc *sc)
1635 {
1636         struct ieee80211com *ic = &sc->sc_ic;
1637         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1638
1639         device_printf(sc->sc_dev, "firmware error\n");
1640         if (vap != NULL)
1641                 ieee80211_cancel_scan(vap);
1642         ieee80211_runtask(ic, &sc->sc_restarttask);
1643
1644         sc->flags &= ~IWI_FLAG_BUSY;
1645         sc->sc_busy_timer = 0;
1646         wakeup(sc);
1647 }
1648
1649 static void
1650 iwi_radio_off_intr(struct iwi_softc *sc)
1651 {
1652
1653         ieee80211_runtask(&sc->sc_ic, &sc->sc_radiofftask);
1654 }
1655
1656 static void
1657 iwi_intr(void *arg)
1658 {
1659         struct iwi_softc *sc = arg;
1660         uint32_t r;
1661         IWI_LOCK_DECL;
1662
1663         IWI_LOCK(sc);
1664
1665         if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) {
1666                 IWI_UNLOCK(sc);
1667                 return;
1668         }
1669
1670         /* acknowledge interrupts */
1671         CSR_WRITE_4(sc, IWI_CSR_INTR, r);
1672
1673         if (r & IWI_INTR_FATAL_ERROR) {
1674                 iwi_fatal_error_intr(sc);
1675                 goto done;
1676         }
1677
1678         if (r & IWI_INTR_FW_INITED) {
1679                 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR)))
1680                         wakeup(sc);
1681         }
1682
1683         if (r & IWI_INTR_RADIO_OFF)
1684                 iwi_radio_off_intr(sc);
1685
1686         if (r & IWI_INTR_CMD_DONE) {
1687                 sc->flags &= ~IWI_FLAG_BUSY;
1688                 sc->sc_busy_timer = 0;
1689                 wakeup(sc);
1690         }
1691
1692         if (r & IWI_INTR_TX1_DONE)
1693                 iwi_tx_intr(sc, &sc->txq[0]);
1694
1695         if (r & IWI_INTR_TX2_DONE)
1696                 iwi_tx_intr(sc, &sc->txq[1]);
1697
1698         if (r & IWI_INTR_TX3_DONE)
1699                 iwi_tx_intr(sc, &sc->txq[2]);
1700
1701         if (r & IWI_INTR_TX4_DONE)
1702                 iwi_tx_intr(sc, &sc->txq[3]);
1703
1704         if (r & IWI_INTR_RX_DONE)
1705                 iwi_rx_intr(sc);
1706
1707         if (r & IWI_INTR_PARITY_ERROR) {
1708                 /* XXX rate-limit */
1709                 device_printf(sc->sc_dev, "parity error\n");
1710         }
1711 done:
1712         IWI_UNLOCK(sc);
1713 }
1714
1715 static int
1716 iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len)
1717 {
1718         struct iwi_cmd_desc *desc;
1719
1720         IWI_LOCK_ASSERT(sc);
1721
1722         if (sc->flags & IWI_FLAG_BUSY) {
1723                 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n",
1724                         __func__, type);
1725                 return EAGAIN;
1726         }
1727         sc->flags |= IWI_FLAG_BUSY;
1728         sc->sc_busy_timer = 2;
1729
1730         desc = &sc->cmdq.desc[sc->cmdq.cur];
1731
1732         desc->hdr.type = IWI_HDR_TYPE_COMMAND;
1733         desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1734         desc->type = type;
1735         desc->len = len;
1736         memcpy(desc->data, data, len);
1737
1738         bus_dmamap_sync(sc->cmdq.desc_dmat, sc->cmdq.desc_map,
1739             BUS_DMASYNC_PREWRITE);
1740
1741         DPRINTFN(2, ("sending command idx=%u type=%u len=%u\n", sc->cmdq.cur,
1742             type, len));
1743
1744         sc->cmdq.cur = (sc->cmdq.cur + 1) % IWI_CMD_RING_COUNT;
1745         CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
1746
1747         return msleep(sc, &sc->sc_mtx, 0, "iwicmd", hz);
1748 }
1749
1750 static void
1751 iwi_write_ibssnode(struct iwi_softc *sc,
1752         const u_int8_t addr[IEEE80211_ADDR_LEN], int entry)
1753 {
1754         struct iwi_ibssnode node;
1755
1756         /* write node information into NIC memory */
1757         memset(&node, 0, sizeof node);
1758         IEEE80211_ADDR_COPY(node.bssid, addr);
1759
1760         DPRINTF(("%s mac %6D station %u\n", __func__, node.bssid, ":", entry));
1761
1762         CSR_WRITE_REGION_1(sc,
1763             IWI_CSR_NODE_BASE + entry * sizeof node,
1764             (uint8_t *)&node, sizeof node);
1765 }
1766
1767 static int
1768 iwi_tx_start(struct iwi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1769     int ac)
1770 {
1771         struct ieee80211vap *vap = ni->ni_vap;
1772         struct ieee80211com *ic = ni->ni_ic;
1773         struct iwi_node *in = (struct iwi_node *)ni;
1774         const struct ieee80211_frame *wh;
1775         struct ieee80211_key *k;
1776         const struct chanAccParams *cap;
1777         struct iwi_tx_ring *txq = &sc->txq[ac];
1778         struct iwi_tx_data *data;
1779         struct iwi_tx_desc *desc;
1780         struct mbuf *mnew;
1781         bus_dma_segment_t segs[IWI_MAX_NSEG];
1782         int error, nsegs, hdrlen, i;
1783         int ismcast, flags, xflags, staid;
1784
1785         IWI_LOCK_ASSERT(sc);
1786         wh = mtod(m0, const struct ieee80211_frame *);
1787         /* NB: only data frames use this path */
1788         hdrlen = ieee80211_hdrsize(wh);
1789         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
1790         flags = xflags = 0;
1791
1792         if (!ismcast)
1793                 flags |= IWI_DATA_FLAG_NEED_ACK;
1794         if (vap->iv_flags & IEEE80211_F_SHPREAMBLE)
1795                 flags |= IWI_DATA_FLAG_SHPREAMBLE;
1796         if (IEEE80211_QOS_HAS_SEQ(wh)) {
1797                 xflags |= IWI_DATA_XFLAG_QOS;
1798                 cap = &ic->ic_wme.wme_chanParams;
1799                 if (!cap->cap_wmeParams[ac].wmep_noackPolicy)
1800                         flags &= ~IWI_DATA_FLAG_NEED_ACK;
1801         }
1802
1803         /*
1804          * This is only used in IBSS mode where the firmware expect an index
1805          * in a h/w table instead of a destination address.
1806          */
1807         if (vap->iv_opmode == IEEE80211_M_IBSS) {
1808                 if (!ismcast) {
1809                         if (in->in_station == -1) {
1810                                 in->in_station = alloc_unr(sc->sc_unr);
1811                                 if (in->in_station == -1) {
1812                                         /* h/w table is full */
1813                                         if_inc_counter(ni->ni_vap->iv_ifp,
1814                                             IFCOUNTER_OERRORS, 1);
1815                                         m_freem(m0);
1816                                         ieee80211_free_node(ni);
1817                                         return 0;
1818                                 }
1819                                 iwi_write_ibssnode(sc,
1820                                         ni->ni_macaddr, in->in_station);
1821                         }
1822                         staid = in->in_station;
1823                 } else {
1824                         /*
1825                          * Multicast addresses have no associated node
1826                          * so there will be no station entry.  We reserve
1827                          * entry 0 for one mcast address and use that.
1828                          * If there are many being used this will be
1829                          * expensive and we'll need to do a better job
1830                          * but for now this handles the broadcast case.
1831                          */
1832                         if (!IEEE80211_ADDR_EQ(wh->i_addr1, sc->sc_mcast)) {
1833                                 IEEE80211_ADDR_COPY(sc->sc_mcast, wh->i_addr1);
1834                                 iwi_write_ibssnode(sc, sc->sc_mcast, 0);
1835                         }
1836                         staid = 0;
1837                 }
1838         } else
1839                 staid = 0;
1840
1841         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1842                 k = ieee80211_crypto_encap(ni, m0);
1843                 if (k == NULL) {
1844                         m_freem(m0);
1845                         return ENOBUFS;
1846                 }
1847
1848                 /* packet header may have moved, reset our local pointer */
1849                 wh = mtod(m0, struct ieee80211_frame *);
1850         }
1851
1852         if (ieee80211_radiotap_active_vap(vap)) {
1853                 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap;
1854
1855                 tap->wt_flags = 0;
1856
1857                 ieee80211_radiotap_tx(vap, m0);
1858         }
1859
1860         data = &txq->data[txq->cur];
1861         desc = &txq->desc[txq->cur];
1862
1863         /* save and trim IEEE802.11 header */
1864         m_copydata(m0, 0, hdrlen, (caddr_t)&desc->wh);
1865         m_adj(m0, hdrlen);
1866
1867         error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, m0, segs,
1868             &nsegs, 0);
1869         if (error != 0 && error != EFBIG) {
1870                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1871                     error);
1872                 m_freem(m0);
1873                 return error;
1874         }
1875         if (error != 0) {
1876                 mnew = m_defrag(m0, M_NOWAIT);
1877                 if (mnew == NULL) {
1878                         device_printf(sc->sc_dev,
1879                             "could not defragment mbuf\n");
1880                         m_freem(m0);
1881                         return ENOBUFS;
1882                 }
1883                 m0 = mnew;
1884
1885                 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map,
1886                     m0, segs, &nsegs, 0);
1887                 if (error != 0) {
1888                         device_printf(sc->sc_dev,
1889                             "could not map mbuf (error %d)\n", error);
1890                         m_freem(m0);
1891                         return error;
1892                 }
1893         }
1894
1895         data->m = m0;
1896         data->ni = ni;
1897
1898         desc->hdr.type = IWI_HDR_TYPE_DATA;
1899         desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1900         desc->station = staid;
1901         desc->cmd = IWI_DATA_CMD_TX;
1902         desc->len = htole16(m0->m_pkthdr.len);
1903         desc->flags = flags;
1904         desc->xflags = xflags;
1905
1906 #if 0
1907         if (vap->iv_flags & IEEE80211_F_PRIVACY)
1908                 desc->wep_txkey = vap->iv_def_txkey;
1909         else
1910 #endif
1911                 desc->flags |= IWI_DATA_FLAG_NO_WEP;
1912
1913         desc->nseg = htole32(nsegs);
1914         for (i = 0; i < nsegs; i++) {
1915                 desc->seg_addr[i] = htole32(segs[i].ds_addr);
1916                 desc->seg_len[i]  = htole16(segs[i].ds_len);
1917         }
1918
1919         bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1920         bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE);
1921
1922         DPRINTFN(5, ("sending data frame txq=%u idx=%u len=%u nseg=%u\n",
1923             ac, txq->cur, le16toh(desc->len), nsegs));
1924
1925         txq->queued++;
1926         txq->cur = (txq->cur + 1) % IWI_TX_RING_COUNT;
1927         CSR_WRITE_4(sc, txq->csr_widx, txq->cur);
1928
1929         return 0;
1930 }
1931
1932 static int
1933 iwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1934         const struct ieee80211_bpf_params *params)
1935 {
1936         /* no support; just discard */
1937         m_freem(m);
1938         ieee80211_free_node(ni);
1939         return 0;
1940 }
1941
1942 static int
1943 iwi_transmit(struct ieee80211com *ic, struct mbuf *m)
1944 {
1945         struct iwi_softc *sc = ic->ic_softc;
1946         int error;
1947         IWI_LOCK_DECL;
1948
1949         IWI_LOCK(sc);
1950         if (!sc->sc_running) {
1951                 IWI_UNLOCK(sc);
1952                 return (ENXIO);
1953         }
1954         error = mbufq_enqueue(&sc->sc_snd, m);
1955         if (error) {
1956                 IWI_UNLOCK(sc);
1957                 return (error);
1958         }
1959         iwi_start(sc);
1960         IWI_UNLOCK(sc);
1961         return (0);
1962 }
1963
1964 static void
1965 iwi_start(struct iwi_softc *sc)
1966 {
1967         struct mbuf *m;
1968         struct ieee80211_node *ni;
1969         int ac;
1970
1971         IWI_LOCK_ASSERT(sc);
1972
1973         while ((m =  mbufq_dequeue(&sc->sc_snd)) != NULL) {
1974                 ac = M_WME_GETAC(m);
1975                 if (sc->txq[ac].queued > IWI_TX_RING_COUNT - 8) {
1976                         /* there is no place left in this ring; tail drop */
1977                         /* XXX tail drop */
1978                         mbufq_prepend(&sc->sc_snd, m);
1979                         break;
1980                 }
1981                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1982                 if (iwi_tx_start(sc, m, ni, ac) != 0) {
1983                         if_inc_counter(ni->ni_vap->iv_ifp,
1984                             IFCOUNTER_OERRORS, 1);
1985                         ieee80211_free_node(ni);
1986                         break;
1987                 }
1988                 sc->sc_tx_timer = 5;
1989         }
1990 }
1991
1992 static void
1993 iwi_watchdog(void *arg)
1994 {
1995         struct iwi_softc *sc = arg;
1996         struct ieee80211com *ic = &sc->sc_ic;
1997
1998         IWI_LOCK_ASSERT(sc);
1999
2000         if (sc->sc_tx_timer > 0) {
2001                 if (--sc->sc_tx_timer == 0) {
2002                         device_printf(sc->sc_dev, "device timeout\n");
2003                         counter_u64_add(ic->ic_oerrors, 1);
2004                         ieee80211_runtask(ic, &sc->sc_restarttask);
2005                 }
2006         }
2007         if (sc->sc_state_timer > 0) {
2008                 if (--sc->sc_state_timer == 0) {
2009                         device_printf(sc->sc_dev,
2010                             "firmware stuck in state %d, resetting\n",
2011                             sc->fw_state);
2012                         if (sc->fw_state == IWI_FW_SCANNING)
2013                                 ieee80211_cancel_scan(TAILQ_FIRST(&ic->ic_vaps));
2014                         ieee80211_runtask(ic, &sc->sc_restarttask);
2015                         sc->sc_state_timer = 3;
2016                 }
2017         }
2018         if (sc->sc_busy_timer > 0) {
2019                 if (--sc->sc_busy_timer == 0) {
2020                         device_printf(sc->sc_dev,
2021                             "firmware command timeout, resetting\n");
2022                         ieee80211_runtask(ic, &sc->sc_restarttask);
2023                 }
2024         }
2025         callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
2026 }
2027
2028 static void
2029 iwi_parent(struct ieee80211com *ic)
2030 {
2031         struct iwi_softc *sc = ic->ic_softc;
2032         int startall = 0;
2033         IWI_LOCK_DECL;
2034
2035         IWI_LOCK(sc);
2036         if (ic->ic_nrunning > 0) {
2037                 if (!sc->sc_running) {
2038                         iwi_init_locked(sc);
2039                         startall = 1;
2040                 }
2041         } else if (sc->sc_running)
2042                 iwi_stop_locked(sc);
2043         IWI_UNLOCK(sc);
2044         if (startall)
2045                 ieee80211_start_all(ic);
2046 }
2047
2048 static int
2049 iwi_ioctl(struct ieee80211com *ic, u_long cmd, void *data)
2050 {
2051         struct ifreq *ifr = data;
2052         struct iwi_softc *sc = ic->ic_softc;
2053         int error;
2054         IWI_LOCK_DECL;
2055
2056         IWI_LOCK(sc);
2057         switch (cmd) {
2058         case SIOCGIWISTATS:
2059                 /* XXX validate permissions/memory/etc? */
2060                 error = copyout(&sc->sc_linkqual, ifr->ifr_data,
2061                     sizeof(struct iwi_notif_link_quality));
2062                 break;
2063         case SIOCZIWISTATS:
2064                 memset(&sc->sc_linkqual, 0,
2065                     sizeof(struct iwi_notif_link_quality));
2066                 error = 0;
2067                 break;
2068         default:
2069                 error = ENOTTY;
2070                 break;
2071         }
2072         IWI_UNLOCK(sc);
2073
2074         return (error);
2075 }
2076
2077 static void
2078 iwi_stop_master(struct iwi_softc *sc)
2079 {
2080         uint32_t tmp;
2081         int ntries;
2082
2083         /* disable interrupts */
2084         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0);
2085
2086         CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER);
2087         for (ntries = 0; ntries < 5; ntries++) {
2088                 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2089                         break;
2090                 DELAY(10);
2091         }
2092         if (ntries == 5)
2093                 device_printf(sc->sc_dev, "timeout waiting for master\n");
2094
2095         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2096         CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_PRINCETON_RESET);
2097
2098         sc->flags &= ~IWI_FLAG_FW_INITED;
2099 }
2100
2101 static int
2102 iwi_reset(struct iwi_softc *sc)
2103 {
2104         uint32_t tmp;
2105         int i, ntries;
2106
2107         iwi_stop_master(sc);
2108
2109         tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2110         CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2111
2112         CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST);
2113
2114         /* wait for clock stabilization */
2115         for (ntries = 0; ntries < 1000; ntries++) {
2116                 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY)
2117                         break;
2118                 DELAY(200);
2119         }
2120         if (ntries == 1000) {
2121                 device_printf(sc->sc_dev,
2122                     "timeout waiting for clock stabilization\n");
2123                 return EIO;
2124         }
2125
2126         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2127         CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_SOFT_RESET);
2128
2129         DELAY(10);
2130
2131         tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2132         CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2133
2134         /* clear NIC memory */
2135         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0);
2136         for (i = 0; i < 0xc000; i++)
2137                 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2138
2139         return 0;
2140 }
2141
2142 static const struct iwi_firmware_ohdr *
2143 iwi_setup_ofw(struct iwi_softc *sc, struct iwi_fw *fw)
2144 {
2145         const struct firmware *fp = fw->fp;
2146         const struct iwi_firmware_ohdr *hdr;
2147
2148         if (fp->datasize < sizeof (struct iwi_firmware_ohdr)) {
2149                 device_printf(sc->sc_dev, "image '%s' too small\n", fp->name);
2150                 return NULL;
2151         }
2152         hdr = (const struct iwi_firmware_ohdr *)fp->data;
2153         if ((IWI_FW_GET_MAJOR(le32toh(hdr->version)) != IWI_FW_REQ_MAJOR) ||
2154             (IWI_FW_GET_MINOR(le32toh(hdr->version)) != IWI_FW_REQ_MINOR)) {
2155                 device_printf(sc->sc_dev, "version for '%s' %d.%d != %d.%d\n",
2156                     fp->name, IWI_FW_GET_MAJOR(le32toh(hdr->version)),
2157                     IWI_FW_GET_MINOR(le32toh(hdr->version)), IWI_FW_REQ_MAJOR,
2158                     IWI_FW_REQ_MINOR);
2159                 return NULL;
2160         }
2161         fw->data = ((const char *) fp->data) + sizeof(struct iwi_firmware_ohdr);
2162         fw->size = fp->datasize - sizeof(struct iwi_firmware_ohdr);
2163         fw->name = fp->name;
2164         return hdr;
2165 }
2166
2167 static const struct iwi_firmware_ohdr *
2168 iwi_setup_oucode(struct iwi_softc *sc, struct iwi_fw *fw)
2169 {
2170         const struct iwi_firmware_ohdr *hdr;
2171
2172         hdr = iwi_setup_ofw(sc, fw);
2173         if (hdr != NULL && le32toh(hdr->mode) != IWI_FW_MODE_UCODE) {
2174                 device_printf(sc->sc_dev, "%s is not a ucode image\n",
2175                     fw->name);
2176                 hdr = NULL;
2177         }
2178         return hdr;
2179 }
2180
2181 static void
2182 iwi_getfw(struct iwi_fw *fw, const char *fwname,
2183           struct iwi_fw *uc, const char *ucname)
2184 {
2185         if (fw->fp == NULL)
2186                 fw->fp = firmware_get(fwname);
2187         /* NB: pre-3.0 ucode is packaged separately */
2188         if (uc->fp == NULL && fw->fp != NULL && fw->fp->version < 300)
2189                 uc->fp = firmware_get(ucname);
2190 }
2191
2192 /*
2193  * Get the required firmware images if not already loaded.
2194  * Note that we hold firmware images so long as the device
2195  * is marked up in case we need to reload them on device init.
2196  * This is necessary because we re-init the device sometimes
2197  * from a context where we cannot read from the filesystem
2198  * (e.g. from the taskqueue thread when rfkill is re-enabled).
2199  * XXX return 0 on success, 1 on error.
2200  *
2201  * NB: the order of get'ing and put'ing images here is
2202  * intentional to support handling firmware images bundled
2203  * by operating mode and/or all together in one file with
2204  * the boot firmware as "master".
2205  */
2206 static int
2207 iwi_get_firmware(struct iwi_softc *sc, enum ieee80211_opmode opmode)
2208 {
2209         const struct iwi_firmware_hdr *hdr;
2210         const struct firmware *fp;
2211
2212         /* invalidate cached firmware on mode change */
2213         if (sc->fw_mode != opmode)
2214                 iwi_put_firmware(sc);
2215
2216         switch (opmode) {
2217         case IEEE80211_M_STA:
2218                 iwi_getfw(&sc->fw_fw, "iwi_bss", &sc->fw_uc, "iwi_ucode_bss");
2219                 break;
2220         case IEEE80211_M_IBSS:
2221                 iwi_getfw(&sc->fw_fw, "iwi_ibss", &sc->fw_uc, "iwi_ucode_ibss");
2222                 break;
2223         case IEEE80211_M_MONITOR:
2224                 iwi_getfw(&sc->fw_fw, "iwi_monitor",
2225                           &sc->fw_uc, "iwi_ucode_monitor");
2226                 break;
2227         default:
2228                 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode);
2229                 return EINVAL;
2230         }
2231         fp = sc->fw_fw.fp;
2232         if (fp == NULL) {
2233                 device_printf(sc->sc_dev, "could not load firmware\n");
2234                 goto bad;
2235         }
2236         if (fp->version < 300) {
2237                 /*
2238                  * Firmware prior to 3.0 was packaged as separate
2239                  * boot, firmware, and ucode images.  Verify the
2240                  * ucode image was read in, retrieve the boot image
2241                  * if needed, and check version stamps for consistency.
2242                  * The version stamps in the data are also checked
2243                  * above; this is a bit paranoid but is a cheap
2244                  * safeguard against mis-packaging.
2245                  */
2246                 if (sc->fw_uc.fp == NULL) {
2247                         device_printf(sc->sc_dev, "could not load ucode\n");
2248                         goto bad;
2249                 }
2250                 if (sc->fw_boot.fp == NULL) {
2251                         sc->fw_boot.fp = firmware_get("iwi_boot");
2252                         if (sc->fw_boot.fp == NULL) {
2253                                 device_printf(sc->sc_dev,
2254                                         "could not load boot firmware\n");
2255                                 goto bad;
2256                         }
2257                 }
2258                 if (sc->fw_boot.fp->version != sc->fw_fw.fp->version ||
2259                     sc->fw_boot.fp->version != sc->fw_uc.fp->version) {
2260                         device_printf(sc->sc_dev,
2261                             "firmware version mismatch: "
2262                             "'%s' is %d, '%s' is %d, '%s' is %d\n",
2263                             sc->fw_boot.fp->name, sc->fw_boot.fp->version,
2264                             sc->fw_uc.fp->name, sc->fw_uc.fp->version,
2265                             sc->fw_fw.fp->name, sc->fw_fw.fp->version
2266                         );
2267                         goto bad;
2268                 }
2269                 /*
2270                  * Check and setup each image.
2271                  */
2272                 if (iwi_setup_oucode(sc, &sc->fw_uc) == NULL ||
2273                     iwi_setup_ofw(sc, &sc->fw_boot) == NULL ||
2274                     iwi_setup_ofw(sc, &sc->fw_fw) == NULL)
2275                         goto bad;
2276         } else {
2277                 /*
2278                  * Check and setup combined image.
2279                  */
2280                 if (fp->datasize < sizeof(struct iwi_firmware_hdr)) {
2281                         device_printf(sc->sc_dev, "image '%s' too small\n",
2282                             fp->name);
2283                         goto bad;
2284                 }
2285                 hdr = (const struct iwi_firmware_hdr *)fp->data;
2286                 if (fp->datasize < sizeof(*hdr) + le32toh(hdr->bsize) + le32toh(hdr->usize)
2287                                 + le32toh(hdr->fsize)) {
2288                         device_printf(sc->sc_dev, "image '%s' too small (2)\n",
2289                             fp->name);
2290                         goto bad;
2291                 }
2292                 sc->fw_boot.data = ((const char *) fp->data) + sizeof(*hdr);
2293                 sc->fw_boot.size = le32toh(hdr->bsize);
2294                 sc->fw_boot.name = fp->name;
2295                 sc->fw_uc.data = sc->fw_boot.data + sc->fw_boot.size;
2296                 sc->fw_uc.size = le32toh(hdr->usize);
2297                 sc->fw_uc.name = fp->name;
2298                 sc->fw_fw.data = sc->fw_uc.data + sc->fw_uc.size;
2299                 sc->fw_fw.size = le32toh(hdr->fsize);
2300                 sc->fw_fw.name = fp->name;
2301         }
2302 #if 0
2303         device_printf(sc->sc_dev, "boot %d ucode %d fw %d bytes\n",
2304                 sc->fw_boot.size, sc->fw_uc.size, sc->fw_fw.size);
2305 #endif
2306
2307         sc->fw_mode = opmode;
2308         return 0;
2309 bad:
2310         iwi_put_firmware(sc);
2311         return 1;
2312 }
2313
2314 static void
2315 iwi_put_fw(struct iwi_fw *fw)
2316 {
2317         if (fw->fp != NULL) {
2318                 firmware_put(fw->fp, FIRMWARE_UNLOAD);
2319                 fw->fp = NULL;
2320         }
2321         fw->data = NULL;
2322         fw->size = 0;
2323         fw->name = NULL;
2324 }
2325
2326 /*
2327  * Release any cached firmware images.
2328  */
2329 static void
2330 iwi_put_firmware(struct iwi_softc *sc)
2331 {
2332         iwi_put_fw(&sc->fw_uc);
2333         iwi_put_fw(&sc->fw_fw);
2334         iwi_put_fw(&sc->fw_boot);
2335 }
2336
2337 static int
2338 iwi_load_ucode(struct iwi_softc *sc, const struct iwi_fw *fw)
2339 {
2340         uint32_t tmp;
2341         const uint16_t *w;
2342         const char *uc = fw->data;
2343         size_t size = fw->size;
2344         int i, ntries, error;
2345
2346         IWI_LOCK_ASSERT(sc);
2347         error = 0;
2348         CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) |
2349             IWI_RST_STOP_MASTER);
2350         for (ntries = 0; ntries < 5; ntries++) {
2351                 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2352                         break;
2353                 DELAY(10);
2354         }
2355         if (ntries == 5) {
2356                 device_printf(sc->sc_dev, "timeout waiting for master\n");
2357                 error = EIO;
2358                 goto fail;
2359         }
2360
2361         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
2362         DELAY(5000);
2363
2364         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2365         tmp &= ~IWI_RST_PRINCETON_RESET;
2366         CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2367
2368         DELAY(5000);
2369         MEM_WRITE_4(sc, 0x3000e0, 0);
2370         DELAY(1000);
2371         MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 1);
2372         DELAY(1000);
2373         MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 0);
2374         DELAY(1000);
2375         MEM_WRITE_1(sc, 0x200000, 0x00);
2376         MEM_WRITE_1(sc, 0x200000, 0x40);
2377         DELAY(1000);
2378
2379         /* write microcode into adapter memory */
2380         for (w = (const uint16_t *)uc; size > 0; w++, size -= 2)
2381                 MEM_WRITE_2(sc, 0x200010, htole16(*w));
2382
2383         MEM_WRITE_1(sc, 0x200000, 0x00);
2384         MEM_WRITE_1(sc, 0x200000, 0x80);
2385
2386         /* wait until we get an answer */
2387         for (ntries = 0; ntries < 100; ntries++) {
2388                 if (MEM_READ_1(sc, 0x200000) & 1)
2389                         break;
2390                 DELAY(100);
2391         }
2392         if (ntries == 100) {
2393                 device_printf(sc->sc_dev,
2394                     "timeout waiting for ucode to initialize\n");
2395                 error = EIO;
2396                 goto fail;
2397         }
2398
2399         /* read the answer or the firmware will not initialize properly */
2400         for (i = 0; i < 7; i++)
2401                 MEM_READ_4(sc, 0x200004);
2402
2403         MEM_WRITE_1(sc, 0x200000, 0x00);
2404
2405 fail:
2406         return error;
2407 }
2408
2409 /* macro to handle unaligned little endian data in firmware image */
2410 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2411
2412 static int
2413 iwi_load_firmware(struct iwi_softc *sc, const struct iwi_fw *fw)
2414 {
2415         u_char *p, *end;
2416         uint32_t sentinel, ctl, src, dst, sum, len, mlen, tmp;
2417         int ntries, error;
2418
2419         IWI_LOCK_ASSERT(sc);
2420
2421         /* copy firmware image to DMA memory */
2422         memcpy(sc->fw_virtaddr, fw->data, fw->size);
2423
2424         /* make sure the adapter will get up-to-date values */
2425         bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_PREWRITE);
2426
2427         /* tell the adapter where the command blocks are stored */
2428         MEM_WRITE_4(sc, 0x3000a0, 0x27000);
2429
2430         /*
2431          * Store command blocks into adapter's internal memory using register
2432          * indirections. The adapter will read the firmware image through DMA
2433          * using information stored in command blocks.
2434          */
2435         src = sc->fw_physaddr;
2436         p = sc->fw_virtaddr;
2437         end = p + fw->size;
2438         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000);
2439
2440         while (p < end) {
2441                 dst = GETLE32(p); p += 4; src += 4;
2442                 len = GETLE32(p); p += 4; src += 4;
2443                 p += len;
2444
2445                 while (len > 0) {
2446                         mlen = min(len, IWI_CB_MAXDATALEN);
2447
2448                         ctl = IWI_CB_DEFAULT_CTL | mlen;
2449                         sum = ctl ^ src ^ dst;
2450
2451                         /* write a command block */
2452                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl);
2453                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src);
2454                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst);
2455                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum);
2456
2457                         src += mlen;
2458                         dst += mlen;
2459                         len -= mlen;
2460                 }
2461         }
2462
2463         /* write a fictive final command block (sentinel) */
2464         sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR);
2465         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2466
2467         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2468         tmp &= ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER);
2469         CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2470
2471         /* tell the adapter to start processing command blocks */
2472         MEM_WRITE_4(sc, 0x3000a4, 0x540100);
2473
2474         /* wait until the adapter reaches the sentinel */
2475         for (ntries = 0; ntries < 400; ntries++) {
2476                 if (MEM_READ_4(sc, 0x3000d0) >= sentinel)
2477                         break;
2478                 DELAY(100);
2479         }
2480         /* sync dma, just in case */
2481         bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_POSTWRITE);
2482         if (ntries == 400) {
2483                 device_printf(sc->sc_dev,
2484                     "timeout processing command blocks for %s firmware\n",
2485                     fw->name);
2486                 return EIO;
2487         }
2488
2489         /* we're done with command blocks processing */
2490         MEM_WRITE_4(sc, 0x3000a4, 0x540c00);
2491
2492         /* allow interrupts so we know when the firmware is ready */
2493         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK);
2494
2495         /* tell the adapter to initialize the firmware */
2496         CSR_WRITE_4(sc, IWI_CSR_RST, 0);
2497
2498         tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2499         CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_ALLOW_STANDBY);
2500
2501         /* wait at most one second for firmware initialization to complete */
2502         if ((error = msleep(sc, &sc->sc_mtx, 0, "iwiinit", hz)) != 0) {
2503                 device_printf(sc->sc_dev, "timeout waiting for %s firmware "
2504                     "initialization to complete\n", fw->name);
2505         }
2506
2507         return error;
2508 }
2509
2510 static int
2511 iwi_setpowermode(struct iwi_softc *sc, struct ieee80211vap *vap)
2512 {
2513         uint32_t data;
2514
2515         if (vap->iv_flags & IEEE80211_F_PMGTON) {
2516                 /* XXX set more fine-grained operation */
2517                 data = htole32(IWI_POWER_MODE_MAX);
2518         } else
2519                 data = htole32(IWI_POWER_MODE_CAM);
2520
2521         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2522         return iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data);
2523 }
2524
2525 static int
2526 iwi_setwepkeys(struct iwi_softc *sc, struct ieee80211vap *vap)
2527 {
2528         struct iwi_wep_key wepkey;
2529         struct ieee80211_key *wk;
2530         int error, i;
2531
2532         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2533                 wk = &vap->iv_nw_keys[i];
2534
2535                 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY;
2536                 wepkey.idx = i;
2537                 wepkey.len = wk->wk_keylen;
2538                 memset(wepkey.key, 0, sizeof wepkey.key);
2539                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2540                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2541                     wepkey.len));
2542                 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey,
2543                     sizeof wepkey);
2544                 if (error != 0)
2545                         return error;
2546         }
2547         return 0;
2548 }
2549
2550 static int
2551 iwi_config(struct iwi_softc *sc)
2552 {
2553         struct ieee80211com *ic = &sc->sc_ic;
2554         struct iwi_configuration config;
2555         struct iwi_rateset rs;
2556         struct iwi_txpower power;
2557         uint32_t data;
2558         int error, i;
2559
2560         IWI_LOCK_ASSERT(sc);
2561
2562         DPRINTF(("Setting MAC address to %6D\n", ic->ic_macaddr, ":"));
2563         error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, ic->ic_macaddr,
2564             IEEE80211_ADDR_LEN);
2565         if (error != 0)
2566                 return error;
2567
2568         memset(&config, 0, sizeof config);
2569         config.bluetooth_coexistence = sc->bluetooth;
2570         config.silence_threshold = 0x1e;
2571         config.antenna = sc->antenna;
2572         config.multicast_enabled = 1;
2573         config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2574         config.disable_unicast_decryption = 1;
2575         config.disable_multicast_decryption = 1;
2576         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2577                 config.allow_invalid_frames = 1;
2578                 config.allow_beacon_and_probe_resp = 1;
2579                 config.allow_mgt = 1;
2580         }
2581         DPRINTF(("Configuring adapter\n"));
2582         error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2583         if (error != 0)
2584                 return error;
2585         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2586                 power.mode = IWI_MODE_11B;
2587                 power.nchan = 11;
2588                 for (i = 0; i < 11; i++) {
2589                         power.chan[i].chan = i + 1;
2590                         power.chan[i].power = IWI_TXPOWER_MAX;
2591                 }
2592                 DPRINTF(("Setting .11b channels tx power\n"));
2593                 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2594                 if (error != 0)
2595                         return error;
2596
2597                 power.mode = IWI_MODE_11G;
2598                 DPRINTF(("Setting .11g channels tx power\n"));
2599                 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2600                 if (error != 0)
2601                         return error;
2602         }
2603
2604         memset(&rs, 0, sizeof rs);
2605         rs.mode = IWI_MODE_11G;
2606         rs.type = IWI_RATESET_TYPE_SUPPORTED;
2607         rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates;
2608         memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates,
2609             rs.nrates);
2610         DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates));
2611         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2612         if (error != 0)
2613                 return error;
2614
2615         memset(&rs, 0, sizeof rs);
2616         rs.mode = IWI_MODE_11A;
2617         rs.type = IWI_RATESET_TYPE_SUPPORTED;
2618         rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates;
2619         memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates,
2620             rs.nrates);
2621         DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates));
2622         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2623         if (error != 0)
2624                 return error;
2625
2626         data = htole32(arc4random());
2627         DPRINTF(("Setting initialization vector to %u\n", le32toh(data)));
2628         error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data);
2629         if (error != 0)
2630                 return error;
2631
2632         /* enable adapter */
2633         DPRINTF(("Enabling adapter\n"));
2634         return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0);
2635 }
2636
2637 static __inline void
2638 set_scan_type(struct iwi_scan_ext *scan, int ix, int scan_type)
2639 {
2640         uint8_t *st = &scan->scan_type[ix / 2];
2641         if (ix % 2)
2642                 *st = (*st & 0xf0) | ((scan_type & 0xf) << 0);
2643         else
2644                 *st = (*st & 0x0f) | ((scan_type & 0xf) << 4);
2645 }
2646
2647 static int
2648 scan_type(const struct ieee80211_scan_state *ss,
2649         const struct ieee80211_channel *chan)
2650 {
2651         /* We can only set one essid for a directed scan */
2652         if (ss->ss_nssid != 0)
2653                 return IWI_SCAN_TYPE_BDIRECTED;
2654         if ((ss->ss_flags & IEEE80211_SCAN_ACTIVE) &&
2655             (chan->ic_flags & IEEE80211_CHAN_PASSIVE) == 0)
2656                 return IWI_SCAN_TYPE_BROADCAST;
2657         return IWI_SCAN_TYPE_PASSIVE;
2658 }
2659
2660 static __inline int
2661 scan_band(const struct ieee80211_channel *c)
2662 {
2663         return IEEE80211_IS_CHAN_5GHZ(c) ?  IWI_CHAN_5GHZ : IWI_CHAN_2GHZ;
2664 }
2665
2666 static void
2667 iwi_monitor_scan(void *arg, int npending)
2668 {
2669         struct iwi_softc *sc = arg;
2670         IWI_LOCK_DECL;
2671
2672         IWI_LOCK(sc);
2673         (void) iwi_scanchan(sc, 2000, 0);
2674         IWI_UNLOCK(sc);
2675 }
2676
2677 /*
2678  * Start a scan on the current channel or all channels.
2679  */
2680 static int
2681 iwi_scanchan(struct iwi_softc *sc, unsigned long maxdwell, int allchan)
2682 {
2683         struct ieee80211com *ic = &sc->sc_ic;
2684         struct ieee80211_channel *chan;
2685         struct ieee80211_scan_state *ss;
2686         struct iwi_scan_ext scan;
2687         int error = 0;
2688
2689         IWI_LOCK_ASSERT(sc);
2690         if (sc->fw_state == IWI_FW_SCANNING) {
2691                 /*
2692                  * This should not happen as we only trigger scan_next after
2693                  * completion
2694                  */
2695                 DPRINTF(("%s: called too early - still scanning\n", __func__));
2696                 return (EBUSY);
2697         }
2698         IWI_STATE_BEGIN(sc, IWI_FW_SCANNING);
2699
2700         ss = ic->ic_scan;
2701
2702         memset(&scan, 0, sizeof scan);
2703         scan.full_scan_index = htole32(++sc->sc_scangen);
2704         scan.dwell_time[IWI_SCAN_TYPE_PASSIVE] = htole16(maxdwell);
2705         if (ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) {
2706                 /*
2707                  * Use very short dwell times for when we send probe request
2708                  * frames.  Without this bg scans hang.  Ideally this should
2709                  * be handled with early-termination as done by net80211 but
2710                  * that's not feasible (aborting a scan is problematic).
2711                  */
2712                 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(30);
2713                 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(30);
2714         } else {
2715                 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(maxdwell);
2716                 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(maxdwell);
2717         }
2718
2719         /* We can only set one essid for a directed scan */
2720         if (ss->ss_nssid != 0) {
2721                 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ss->ss_ssid[0].ssid,
2722                     ss->ss_ssid[0].len);
2723                 if (error)
2724                         return (error);
2725         }
2726
2727         if (allchan) {
2728                 int i, next, band, b, bstart;
2729                 /*
2730                  * Convert scan list to run-length encoded channel list
2731                  * the firmware requires (preserving the order setup by
2732                  * net80211).  The first entry in each run specifies the
2733                  * band and the count of items in the run.
2734                  */
2735                 next = 0;               /* next open slot */
2736                 bstart = 0;             /* NB: not needed, silence compiler */
2737                 band = -1;              /* NB: impossible value */
2738                 KASSERT(ss->ss_last > 0, ("no channels"));
2739                 for (i = 0; i < ss->ss_last; i++) {
2740                         chan = ss->ss_chans[i];
2741                         b = scan_band(chan);
2742                         if (b != band) {
2743                                 if (band != -1)
2744                                         scan.channels[bstart] =
2745                                             (next - bstart) | band;
2746                                 /* NB: this allocates a slot for the run-len */
2747                                 band = b, bstart = next++;
2748                         }
2749                         if (next >= IWI_SCAN_CHANNELS) {
2750                                 DPRINTF(("truncating scan list\n"));
2751                                 break;
2752                         }
2753                         scan.channels[next] = ieee80211_chan2ieee(ic, chan);
2754                         set_scan_type(&scan, next, scan_type(ss, chan));
2755                         next++;
2756                 }
2757                 scan.channels[bstart] = (next - bstart) | band;
2758         } else {
2759                 /* Scan the current channel only */
2760                 chan = ic->ic_curchan;
2761                 scan.channels[0] = 1 | scan_band(chan);
2762                 scan.channels[1] = ieee80211_chan2ieee(ic, chan);
2763                 set_scan_type(&scan, 1, scan_type(ss, chan));
2764         }
2765 #ifdef IWI_DEBUG
2766         if (iwi_debug > 0) {
2767                 static const char *scantype[8] =
2768                    { "PSTOP", "PASV", "DIR", "BCAST", "BDIR", "5", "6", "7" };
2769                 int i;
2770                 printf("Scan request: index %u dwell %d/%d/%d\n"
2771                     , le32toh(scan.full_scan_index)
2772                     , le16toh(scan.dwell_time[IWI_SCAN_TYPE_PASSIVE])
2773                     , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BROADCAST])
2774                     , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED])
2775                 );
2776                 i = 0;
2777                 do {
2778                         int run = scan.channels[i];
2779                         if (run == 0)
2780                                 break;
2781                         printf("Scan %d %s channels:", run & 0x3f,
2782                             run & IWI_CHAN_2GHZ ? "2.4GHz" : "5GHz");
2783                         for (run &= 0x3f, i++; run > 0; run--, i++) {
2784                                 uint8_t type = scan.scan_type[i/2];
2785                                 printf(" %u/%s", scan.channels[i],
2786                                     scantype[(i & 1 ? type : type>>4) & 7]);
2787                         }
2788                         printf("\n");
2789                 } while (i < IWI_SCAN_CHANNELS);
2790         }
2791 #endif
2792
2793         return (iwi_cmd(sc, IWI_CMD_SCAN_EXT, &scan, sizeof scan));
2794 }
2795
2796 static int
2797 iwi_set_sensitivity(struct iwi_softc *sc, int8_t rssi_dbm)
2798 {
2799         struct iwi_sensitivity sens;
2800
2801         DPRINTF(("Setting sensitivity to %d\n", rssi_dbm));
2802
2803         memset(&sens, 0, sizeof sens);
2804         sens.rssi = htole16(rssi_dbm);
2805         return iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &sens, sizeof sens);
2806 }
2807
2808 static int
2809 iwi_auth_and_assoc(struct iwi_softc *sc, struct ieee80211vap *vap)
2810 {
2811         struct ieee80211com *ic = vap->iv_ic;
2812         struct ifnet *ifp = vap->iv_ifp;
2813         struct ieee80211_node *ni;
2814         struct iwi_configuration config;
2815         struct iwi_associate *assoc = &sc->assoc;
2816         struct iwi_rateset rs;
2817         uint16_t capinfo;
2818         uint32_t data;
2819         int error, mode;
2820
2821         IWI_LOCK_ASSERT(sc);
2822
2823         ni = ieee80211_ref_node(vap->iv_bss);
2824
2825         if (sc->flags & IWI_FLAG_ASSOCIATED) {
2826                 DPRINTF(("Already associated\n"));
2827                 return (-1);
2828         }
2829
2830         IWI_STATE_BEGIN(sc, IWI_FW_ASSOCIATING);
2831         error = 0;
2832         mode = 0;
2833
2834         if (IEEE80211_IS_CHAN_A(ic->ic_curchan))
2835                 mode = IWI_MODE_11A;
2836         else if (IEEE80211_IS_CHAN_G(ic->ic_curchan))
2837                 mode = IWI_MODE_11G;
2838         if (IEEE80211_IS_CHAN_B(ic->ic_curchan))
2839                 mode = IWI_MODE_11B;
2840
2841         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2842                 memset(&config, 0, sizeof config);
2843                 config.bluetooth_coexistence = sc->bluetooth;
2844                 config.antenna = sc->antenna;
2845                 config.multicast_enabled = 1;
2846                 if (mode == IWI_MODE_11G)
2847                         config.use_protection = 1;
2848                 config.answer_pbreq =
2849                     (vap->iv_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2850                 config.disable_unicast_decryption = 1;
2851                 config.disable_multicast_decryption = 1;
2852                 DPRINTF(("Configuring adapter\n"));
2853                 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2854                 if (error != 0)
2855                         goto done;
2856         }
2857
2858 #ifdef IWI_DEBUG
2859         if (iwi_debug > 0) {
2860                 printf("Setting ESSID to ");
2861                 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
2862                 printf("\n");
2863         }
2864 #endif
2865         error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen);
2866         if (error != 0)
2867                 goto done;
2868
2869         error = iwi_setpowermode(sc, vap);
2870         if (error != 0)
2871                 goto done;
2872
2873         data = htole32(vap->iv_rtsthreshold);
2874         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2875         error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2876         if (error != 0)
2877                 goto done;
2878
2879         data = htole32(vap->iv_fragthreshold);
2880         DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data)));
2881         error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2882         if (error != 0)
2883                 goto done;
2884
2885         /* the rate set has already been "negotiated" */
2886         memset(&rs, 0, sizeof rs);
2887         rs.mode = mode;
2888         rs.type = IWI_RATESET_TYPE_NEGOTIATED;
2889         rs.nrates = ni->ni_rates.rs_nrates;
2890         if (rs.nrates > IWI_RATESET_SIZE) {
2891                 DPRINTF(("Truncating negotiated rate set from %u\n",
2892                     rs.nrates));
2893                 rs.nrates = IWI_RATESET_SIZE;
2894         }
2895         memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates);
2896         DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates));
2897         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2898         if (error != 0)
2899                 goto done;
2900
2901         memset(assoc, 0, sizeof *assoc);
2902
2903         if ((vap->iv_flags & IEEE80211_F_WME) && ni->ni_ies.wme_ie != NULL) {
2904                 /* NB: don't treat WME setup as failure */
2905                 if (iwi_wme_setparams(sc) == 0 && iwi_wme_setie(sc) == 0)
2906                         assoc->policy |= htole16(IWI_POLICY_WME);
2907                 /* XXX complain on failure? */
2908         }
2909
2910         if (vap->iv_appie_wpa != NULL) {
2911                 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2912
2913                 DPRINTF(("Setting optional IE (len=%u)\n", ie->ie_len));
2914                 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ie->ie_data, ie->ie_len);
2915                 if (error != 0)
2916                         goto done;
2917         }
2918
2919         error = iwi_set_sensitivity(sc, ic->ic_node_getrssi(ni));
2920         if (error != 0)
2921                 goto done;
2922
2923         assoc->mode = mode;
2924         assoc->chan = ic->ic_curchan->ic_ieee;
2925         /*
2926          * NB: do not arrange for shared key auth w/o privacy
2927          *     (i.e. a wep key); it causes a firmware error.
2928          */
2929         if ((vap->iv_flags & IEEE80211_F_PRIVACY) &&
2930             ni->ni_authmode == IEEE80211_AUTH_SHARED) {
2931                 assoc->auth = IWI_AUTH_SHARED;
2932                 /*
2933                  * It's possible to have privacy marked but no default
2934                  * key setup.  This typically is due to a user app bug
2935                  * but if we blindly grab the key the firmware will
2936                  * barf so avoid it for now.
2937                  */
2938                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE)
2939                         assoc->auth |= vap->iv_def_txkey << 4;
2940
2941                 error = iwi_setwepkeys(sc, vap);
2942                 if (error != 0)
2943                         goto done;
2944         }
2945         if (vap->iv_flags & IEEE80211_F_WPA)
2946                 assoc->policy |= htole16(IWI_POLICY_WPA);
2947         if (vap->iv_opmode == IEEE80211_M_IBSS && ni->ni_tstamp.tsf == 0)
2948                 assoc->type = IWI_HC_IBSS_START;
2949         else
2950                 assoc->type = IWI_HC_ASSOC;
2951         memcpy(assoc->tstamp, ni->ni_tstamp.data, 8);
2952
2953         if (vap->iv_opmode == IEEE80211_M_IBSS)
2954                 capinfo = IEEE80211_CAPINFO_IBSS;
2955         else
2956                 capinfo = IEEE80211_CAPINFO_ESS;
2957         if (vap->iv_flags & IEEE80211_F_PRIVACY)
2958                 capinfo |= IEEE80211_CAPINFO_PRIVACY;
2959         if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
2960             IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
2961                 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
2962         if (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)
2963                 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME;
2964         assoc->capinfo = htole16(capinfo);
2965
2966         assoc->lintval = htole16(ic->ic_lintval);
2967         assoc->intval = htole16(ni->ni_intval);
2968         IEEE80211_ADDR_COPY(assoc->bssid, ni->ni_bssid);
2969         if (vap->iv_opmode == IEEE80211_M_IBSS)
2970                 IEEE80211_ADDR_COPY(assoc->dst, ifp->if_broadcastaddr);
2971         else
2972                 IEEE80211_ADDR_COPY(assoc->dst, ni->ni_bssid);
2973
2974         DPRINTF(("%s bssid %6D dst %6D channel %u policy 0x%x "
2975             "auth %u capinfo 0x%x lintval %u bintval %u\n",
2976             assoc->type == IWI_HC_IBSS_START ? "Start" : "Join",
2977             assoc->bssid, ":", assoc->dst, ":",
2978             assoc->chan, le16toh(assoc->policy), assoc->auth,
2979             le16toh(assoc->capinfo), le16toh(assoc->lintval),
2980             le16toh(assoc->intval)));
2981         error = iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
2982 done:
2983         ieee80211_free_node(ni);
2984         if (error)
2985                 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
2986
2987         return (error);
2988 }
2989
2990 static void
2991 iwi_disassoc(void *arg, int pending)
2992 {
2993         struct iwi_softc *sc = arg;
2994         IWI_LOCK_DECL;
2995
2996         IWI_LOCK(sc);
2997         iwi_disassociate(sc, 0);
2998         IWI_UNLOCK(sc);
2999 }
3000
3001 static int
3002 iwi_disassociate(struct iwi_softc *sc, int quiet)
3003 {
3004         struct iwi_associate *assoc = &sc->assoc;
3005
3006         if ((sc->flags & IWI_FLAG_ASSOCIATED) == 0) {
3007                 DPRINTF(("Not associated\n"));
3008                 return (-1);
3009         }
3010
3011         IWI_STATE_BEGIN(sc, IWI_FW_DISASSOCIATING);
3012
3013         if (quiet)
3014                 assoc->type = IWI_HC_DISASSOC_QUIET;
3015         else
3016                 assoc->type = IWI_HC_DISASSOC;
3017
3018         DPRINTF(("Trying to disassociate from %6D channel %u\n",
3019             assoc->bssid, ":", assoc->chan));
3020         return iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
3021 }
3022
3023 /*
3024  * release dma resources for the firmware
3025  */
3026 static void
3027 iwi_release_fw_dma(struct iwi_softc *sc)
3028 {
3029         if (sc->fw_flags & IWI_FW_HAVE_PHY)
3030                 bus_dmamap_unload(sc->fw_dmat, sc->fw_map);
3031         if (sc->fw_flags & IWI_FW_HAVE_MAP)
3032                 bus_dmamem_free(sc->fw_dmat, sc->fw_virtaddr, sc->fw_map);
3033         if (sc->fw_flags & IWI_FW_HAVE_DMAT)
3034                 bus_dma_tag_destroy(sc->fw_dmat);
3035
3036         sc->fw_flags = 0;
3037         sc->fw_dma_size = 0;
3038         sc->fw_dmat = NULL;
3039         sc->fw_map = NULL;
3040         sc->fw_physaddr = 0;
3041         sc->fw_virtaddr = NULL;
3042 }
3043
3044 /*
3045  * allocate the dma descriptor for the firmware.
3046  * Return 0 on success, 1 on error.
3047  * Must be called unlocked, protected by IWI_FLAG_FW_LOADING.
3048  */
3049 static int
3050 iwi_init_fw_dma(struct iwi_softc *sc, int size)
3051 {
3052         if (sc->fw_dma_size >= size)
3053                 return 0;
3054         if (bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
3055             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
3056             size, 1, size, 0, NULL, NULL, &sc->fw_dmat) != 0) {
3057                 device_printf(sc->sc_dev,
3058                     "could not create firmware DMA tag\n");
3059                 goto error;
3060         }
3061         sc->fw_flags |= IWI_FW_HAVE_DMAT;
3062         if (bus_dmamem_alloc(sc->fw_dmat, &sc->fw_virtaddr, 0,
3063             &sc->fw_map) != 0) {
3064                 device_printf(sc->sc_dev,
3065                     "could not allocate firmware DMA memory\n");
3066                 goto error;
3067         }
3068         sc->fw_flags |= IWI_FW_HAVE_MAP;
3069         if (bus_dmamap_load(sc->fw_dmat, sc->fw_map, sc->fw_virtaddr,
3070             size, iwi_dma_map_addr, &sc->fw_physaddr, 0) != 0) {
3071                 device_printf(sc->sc_dev, "could not load firmware DMA map\n");
3072                 goto error;
3073         }
3074         sc->fw_flags |= IWI_FW_HAVE_PHY;
3075         sc->fw_dma_size = size;
3076         return 0;
3077
3078 error:
3079         iwi_release_fw_dma(sc);
3080         return 1;
3081 }
3082
3083 static void
3084 iwi_init_locked(struct iwi_softc *sc)
3085 {
3086         struct iwi_rx_data *data;
3087         int i;
3088
3089         IWI_LOCK_ASSERT(sc);
3090
3091         if (sc->fw_state == IWI_FW_LOADING) {
3092                 device_printf(sc->sc_dev, "%s: already loading\n", __func__);
3093                 return;         /* XXX: condvar? */
3094         }
3095
3096         iwi_stop_locked(sc);
3097
3098         IWI_STATE_BEGIN(sc, IWI_FW_LOADING);
3099
3100         if (iwi_reset(sc) != 0) {
3101                 device_printf(sc->sc_dev, "could not reset adapter\n");
3102                 goto fail;
3103         }
3104         if (iwi_load_firmware(sc, &sc->fw_boot) != 0) {
3105                 device_printf(sc->sc_dev,
3106                     "could not load boot firmware %s\n", sc->fw_boot.name);
3107                 goto fail;
3108         }
3109         if (iwi_load_ucode(sc, &sc->fw_uc) != 0) {
3110                 device_printf(sc->sc_dev,
3111                     "could not load microcode %s\n", sc->fw_uc.name);
3112                 goto fail;
3113         }
3114
3115         iwi_stop_master(sc);
3116
3117         CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.physaddr);
3118         CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count);
3119         CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
3120
3121         CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq[0].physaddr);
3122         CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq[0].count);
3123         CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq[0].cur);
3124
3125         CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq[1].physaddr);
3126         CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq[1].count);
3127         CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq[1].cur);
3128
3129         CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq[2].physaddr);
3130         CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq[2].count);
3131         CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq[2].cur);
3132
3133         CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq[3].physaddr);
3134         CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq[3].count);
3135         CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq[3].cur);
3136
3137         for (i = 0; i < sc->rxq.count; i++) {
3138                 data = &sc->rxq.data[i];
3139                 CSR_WRITE_4(sc, data->reg, data->physaddr);
3140         }
3141
3142         CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count - 1);
3143
3144         if (iwi_load_firmware(sc, &sc->fw_fw) != 0) {
3145                 device_printf(sc->sc_dev,
3146                     "could not load main firmware %s\n", sc->fw_fw.name);
3147                 goto fail;
3148         }
3149         sc->flags |= IWI_FLAG_FW_INITED;
3150
3151         IWI_STATE_END(sc, IWI_FW_LOADING);
3152
3153         if (iwi_config(sc) != 0) {
3154                 device_printf(sc->sc_dev, "unable to enable adapter\n");
3155                 goto fail2;
3156         }
3157
3158         callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
3159         sc->sc_running = 1;
3160         return;
3161 fail:
3162         IWI_STATE_END(sc, IWI_FW_LOADING);
3163 fail2:
3164         iwi_stop_locked(sc);
3165 }
3166
3167 static void
3168 iwi_init(void *priv)
3169 {
3170         struct iwi_softc *sc = priv;
3171         struct ieee80211com *ic = &sc->sc_ic;
3172         IWI_LOCK_DECL;
3173
3174         IWI_LOCK(sc);
3175         iwi_init_locked(sc);
3176         IWI_UNLOCK(sc);
3177
3178         if (sc->sc_running)
3179                 ieee80211_start_all(ic);
3180 }
3181
3182 static void
3183 iwi_stop_locked(void *priv)
3184 {
3185         struct iwi_softc *sc = priv;
3186
3187         IWI_LOCK_ASSERT(sc);
3188
3189         sc->sc_running = 0;
3190
3191         if (sc->sc_softled) {
3192                 callout_stop(&sc->sc_ledtimer);
3193                 sc->sc_blinking = 0;
3194         }
3195         callout_stop(&sc->sc_wdtimer);
3196         callout_stop(&sc->sc_rftimer);
3197
3198         iwi_stop_master(sc);
3199
3200         CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SOFT_RESET);
3201
3202         /* reset rings */
3203         iwi_reset_cmd_ring(sc, &sc->cmdq);
3204         iwi_reset_tx_ring(sc, &sc->txq[0]);
3205         iwi_reset_tx_ring(sc, &sc->txq[1]);
3206         iwi_reset_tx_ring(sc, &sc->txq[2]);
3207         iwi_reset_tx_ring(sc, &sc->txq[3]);
3208         iwi_reset_rx_ring(sc, &sc->rxq);
3209
3210         sc->sc_tx_timer = 0;
3211         sc->sc_state_timer = 0;
3212         sc->sc_busy_timer = 0;
3213         sc->flags &= ~(IWI_FLAG_BUSY | IWI_FLAG_ASSOCIATED);
3214         sc->fw_state = IWI_FW_IDLE;
3215         wakeup(sc);
3216 }
3217
3218 static void
3219 iwi_stop(struct iwi_softc *sc)
3220 {
3221         IWI_LOCK_DECL;
3222
3223         IWI_LOCK(sc);
3224         iwi_stop_locked(sc);
3225         IWI_UNLOCK(sc);
3226 }
3227
3228 static void
3229 iwi_restart(void *arg, int npending)
3230 {
3231         struct iwi_softc *sc = arg;
3232
3233         iwi_init(sc);
3234 }
3235
3236 /*
3237  * Return whether or not the radio is enabled in hardware
3238  * (i.e. the rfkill switch is "off").
3239  */
3240 static int
3241 iwi_getrfkill(struct iwi_softc *sc)
3242 {
3243         return (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) == 0;
3244 }
3245
3246 static void
3247 iwi_radio_on(void *arg, int pending)
3248 {
3249         struct iwi_softc *sc = arg;
3250         struct ieee80211com *ic = &sc->sc_ic;
3251
3252         device_printf(sc->sc_dev, "radio turned on\n");
3253
3254         iwi_init(sc);
3255         ieee80211_notify_radio(ic, 1);
3256 }
3257
3258 static void
3259 iwi_rfkill_poll(void *arg)
3260 {
3261         struct iwi_softc *sc = arg;
3262
3263         IWI_LOCK_ASSERT(sc);
3264
3265         /*
3266          * Check for a change in rfkill state.  We get an
3267          * interrupt when a radio is disabled but not when
3268          * it is enabled so we must poll for the latter.
3269          */
3270         if (!iwi_getrfkill(sc)) {
3271                 ieee80211_runtask(&sc->sc_ic, &sc->sc_radiontask);
3272                 return;
3273         }
3274         callout_reset(&sc->sc_rftimer, 2*hz, iwi_rfkill_poll, sc);
3275 }
3276
3277 static void
3278 iwi_radio_off(void *arg, int pending)
3279 {
3280         struct iwi_softc *sc = arg;
3281         struct ieee80211com *ic = &sc->sc_ic;
3282         IWI_LOCK_DECL;
3283
3284         device_printf(sc->sc_dev, "radio turned off\n");
3285
3286         ieee80211_notify_radio(ic, 0);
3287
3288         IWI_LOCK(sc);
3289         iwi_stop_locked(sc);
3290         iwi_rfkill_poll(sc);
3291         IWI_UNLOCK(sc);
3292 }
3293
3294 static int
3295 iwi_sysctl_stats(SYSCTL_HANDLER_ARGS)
3296 {
3297         struct iwi_softc *sc = arg1;
3298         uint32_t size, buf[128];
3299
3300         memset(buf, 0, sizeof buf);
3301
3302         if (!(sc->flags & IWI_FLAG_FW_INITED))
3303                 return SYSCTL_OUT(req, buf, sizeof buf);
3304
3305         size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1);
3306         CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size);
3307
3308         return SYSCTL_OUT(req, buf, size);
3309 }
3310
3311 static int
3312 iwi_sysctl_radio(SYSCTL_HANDLER_ARGS)
3313 {
3314         struct iwi_softc *sc = arg1;
3315         int val = !iwi_getrfkill(sc);
3316
3317         return SYSCTL_OUT(req, &val, sizeof val);
3318 }
3319
3320 /*
3321  * Add sysctl knobs.
3322  */
3323 static void
3324 iwi_sysctlattach(struct iwi_softc *sc)
3325 {
3326         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
3327         struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
3328
3329         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "radio",
3330             CTLTYPE_INT | CTLFLAG_RD, sc, 0, iwi_sysctl_radio, "I",
3331             "radio transmitter switch state (0=off, 1=on)");
3332
3333         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "stats",
3334             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, iwi_sysctl_stats, "S",
3335             "statistics");
3336
3337         sc->bluetooth = 0;
3338         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "bluetooth",
3339             CTLFLAG_RW, &sc->bluetooth, 0, "bluetooth coexistence");
3340
3341         sc->antenna = IWI_ANTENNA_AUTO;
3342         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "antenna",
3343             CTLFLAG_RW, &sc->antenna, 0, "antenna (0=auto)");
3344 }
3345
3346 /*
3347  * LED support.
3348  *
3349  * Different cards have different capabilities.  Some have three
3350  * led's while others have only one.  The linux ipw driver defines
3351  * led's for link state (associated or not), band (11a, 11g, 11b),
3352  * and for link activity.  We use one led and vary the blink rate
3353  * according to the tx/rx traffic a la the ath driver.
3354  */
3355
3356 static __inline uint32_t
3357 iwi_toggle_event(uint32_t r)
3358 {
3359         return r &~ (IWI_RST_STANDBY | IWI_RST_GATE_ODMA |
3360                      IWI_RST_GATE_IDMA | IWI_RST_GATE_ADMA);
3361 }
3362
3363 static uint32_t
3364 iwi_read_event(struct iwi_softc *sc)
3365 {
3366         return MEM_READ_4(sc, IWI_MEM_EEPROM_EVENT);
3367 }
3368
3369 static void
3370 iwi_write_event(struct iwi_softc *sc, uint32_t v)
3371 {
3372         MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, v);
3373 }
3374
3375 static void
3376 iwi_led_done(void *arg)
3377 {
3378         struct iwi_softc *sc = arg;
3379
3380         sc->sc_blinking = 0;
3381 }
3382
3383 /*
3384  * Turn the activity LED off: flip the pin and then set a timer so no
3385  * update will happen for the specified duration.
3386  */
3387 static void
3388 iwi_led_off(void *arg)
3389 {
3390         struct iwi_softc *sc = arg;
3391         uint32_t v;
3392
3393         v = iwi_read_event(sc);
3394         v &= ~sc->sc_ledpin;
3395         iwi_write_event(sc, iwi_toggle_event(v));
3396         callout_reset(&sc->sc_ledtimer, sc->sc_ledoff, iwi_led_done, sc);
3397 }
3398
3399 /*
3400  * Blink the LED according to the specified on/off times.
3401  */
3402 static void
3403 iwi_led_blink(struct iwi_softc *sc, int on, int off)
3404 {
3405         uint32_t v;
3406
3407         v = iwi_read_event(sc);
3408         v |= sc->sc_ledpin;
3409         iwi_write_event(sc, iwi_toggle_event(v));
3410         sc->sc_blinking = 1;
3411         sc->sc_ledoff = off;
3412         callout_reset(&sc->sc_ledtimer, on, iwi_led_off, sc);
3413 }
3414
3415 static void
3416 iwi_led_event(struct iwi_softc *sc, int event)
3417 {
3418         /* NB: on/off times from the Atheros NDIS driver, w/ permission */
3419         static const struct {
3420                 u_int           rate;           /* tx/rx iwi rate */
3421                 u_int16_t       timeOn;         /* LED on time (ms) */
3422                 u_int16_t       timeOff;        /* LED off time (ms) */
3423         } blinkrates[] = {
3424                 { IWI_RATE_OFDM54, 40,  10 },
3425                 { IWI_RATE_OFDM48, 44,  11 },
3426                 { IWI_RATE_OFDM36, 50,  13 },
3427                 { IWI_RATE_OFDM24, 57,  14 },
3428                 { IWI_RATE_OFDM18, 67,  16 },
3429                 { IWI_RATE_OFDM12, 80,  20 },
3430                 { IWI_RATE_DS11,  100,  25 },
3431                 { IWI_RATE_OFDM9, 133,  34 },
3432                 { IWI_RATE_OFDM6, 160,  40 },
3433                 { IWI_RATE_DS5,   200,  50 },
3434                 {            6,   240,  58 },   /* XXX 3Mb/s if it existed */
3435                 { IWI_RATE_DS2,   267,  66 },
3436                 { IWI_RATE_DS1,   400, 100 },
3437                 {            0,   500, 130 },   /* unknown rate/polling */
3438         };
3439         uint32_t txrate;
3440         int j = 0;                      /* XXX silence compiler */
3441
3442         sc->sc_ledevent = ticks;        /* time of last event */
3443         if (sc->sc_blinking)            /* don't interrupt active blink */
3444                 return;
3445         switch (event) {
3446         case IWI_LED_POLL:
3447                 j = nitems(blinkrates)-1;
3448                 break;
3449         case IWI_LED_TX:
3450                 /* read current transmission rate from adapter */
3451                 txrate = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE);
3452                 if (blinkrates[sc->sc_txrix].rate != txrate) {
3453                         for (j = 0; j < nitems(blinkrates)-1; j++)
3454                                 if (blinkrates[j].rate == txrate)
3455                                         break;
3456                         sc->sc_txrix = j;
3457                 } else
3458                         j = sc->sc_txrix;
3459                 break;
3460         case IWI_LED_RX:
3461                 if (blinkrates[sc->sc_rxrix].rate != sc->sc_rxrate) {
3462                         for (j = 0; j < nitems(blinkrates)-1; j++)
3463                                 if (blinkrates[j].rate == sc->sc_rxrate)
3464                                         break;
3465                         sc->sc_rxrix = j;
3466                 } else
3467                         j = sc->sc_rxrix;
3468                 break;
3469         }
3470         /* XXX beware of overflow */
3471         iwi_led_blink(sc, (blinkrates[j].timeOn * hz) / 1000,
3472                 (blinkrates[j].timeOff * hz) / 1000);
3473 }
3474
3475 static int
3476 iwi_sysctl_softled(SYSCTL_HANDLER_ARGS)
3477 {
3478         struct iwi_softc *sc = arg1;
3479         int softled = sc->sc_softled;
3480         int error;
3481
3482         error = sysctl_handle_int(oidp, &softled, 0, req);
3483         if (error || !req->newptr)
3484                 return error;
3485         softled = (softled != 0);
3486         if (softled != sc->sc_softled) {
3487                 if (softled) {
3488                         uint32_t v = iwi_read_event(sc);
3489                         v &= ~sc->sc_ledpin;
3490                         iwi_write_event(sc, iwi_toggle_event(v));
3491                 }
3492                 sc->sc_softled = softled;
3493         }
3494         return 0;
3495 }
3496
3497 static void
3498 iwi_ledattach(struct iwi_softc *sc)
3499 {
3500         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
3501         struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
3502
3503         sc->sc_blinking = 0;
3504         sc->sc_ledstate = 1;
3505         sc->sc_ledidle = (2700*hz)/1000;        /* 2.7sec */
3506         callout_init_mtx(&sc->sc_ledtimer, &sc->sc_mtx, 0);
3507
3508         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3509                 "softled", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
3510                 iwi_sysctl_softled, "I", "enable/disable software LED support");
3511         SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3512                 "ledpin", CTLFLAG_RW, &sc->sc_ledpin, 0,
3513                 "pin setting to turn activity LED on");
3514         SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3515                 "ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0,
3516                 "idle time for inactivity LED (ticks)");
3517         /* XXX for debugging */
3518         SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3519                 "nictype", CTLFLAG_RD, &sc->sc_nictype, 0,
3520                 "NIC type from EEPROM");
3521
3522         sc->sc_ledpin = IWI_RST_LED_ACTIVITY;
3523         sc->sc_softled = 1;
3524
3525         sc->sc_nictype = (iwi_read_prom_word(sc, IWI_EEPROM_NIC) >> 8) & 0xff;
3526         if (sc->sc_nictype == 1) {
3527                 /*
3528                  * NB: led's are reversed.
3529                  */
3530                 sc->sc_ledpin = IWI_RST_LED_ASSOCIATED;
3531         }
3532 }
3533
3534 static void
3535 iwi_scan_start(struct ieee80211com *ic)
3536 {
3537         /* ignore */
3538 }
3539
3540 static void
3541 iwi_set_channel(struct ieee80211com *ic)
3542 {
3543         struct iwi_softc *sc = ic->ic_softc;
3544
3545         if (sc->fw_state == IWI_FW_IDLE)
3546                 iwi_setcurchan(sc, ic->ic_curchan->ic_ieee);
3547 }
3548
3549 static void
3550 iwi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
3551 {
3552         struct ieee80211vap *vap = ss->ss_vap;
3553         struct iwi_softc *sc = vap->iv_ic->ic_softc;
3554         IWI_LOCK_DECL;
3555
3556         IWI_LOCK(sc);
3557         if (iwi_scanchan(sc, maxdwell, 0))
3558                 ieee80211_cancel_scan(vap);
3559         IWI_UNLOCK(sc);
3560 }
3561
3562 static void
3563 iwi_scan_mindwell(struct ieee80211_scan_state *ss)
3564 {
3565         /* NB: don't try to abort scan; wait for firmware to finish */
3566 }
3567
3568 static void
3569 iwi_scan_end(struct ieee80211com *ic)
3570 {
3571         struct iwi_softc *sc = ic->ic_softc;
3572         IWI_LOCK_DECL;
3573
3574         IWI_LOCK(sc);
3575         sc->flags &= ~IWI_FLAG_CHANNEL_SCAN;
3576         /* NB: make sure we're still scanning */
3577         if (sc->fw_state == IWI_FW_SCANNING)
3578                 iwi_cmd(sc, IWI_CMD_ABORT_SCAN, NULL, 0);
3579         IWI_UNLOCK(sc);
3580 }
3581
3582 static void
3583 iwi_collect_bands(struct ieee80211com *ic, uint8_t bands[], size_t bands_sz)
3584 {
3585         struct iwi_softc *sc = ic->ic_softc;
3586         device_t dev = sc->sc_dev;
3587
3588         memset(bands, 0, bands_sz);
3589         setbit(bands, IEEE80211_MODE_11B);
3590         setbit(bands, IEEE80211_MODE_11G);
3591         if (pci_get_device(dev) >= 0x4223)
3592                 setbit(bands, IEEE80211_MODE_11A);
3593 }
3594
3595 static void
3596 iwi_getradiocaps(struct ieee80211com *ic,
3597     int maxchans, int *nchans, struct ieee80211_channel chans[])
3598 {
3599         uint8_t bands[IEEE80211_MODE_BYTES];
3600
3601         iwi_collect_bands(ic, bands, sizeof(bands));
3602         *nchans = 0;
3603         if (isset(bands, IEEE80211_MODE_11B) || isset(bands, IEEE80211_MODE_11G))
3604                 ieee80211_add_channel_list_2ghz(chans, maxchans, nchans,
3605                     def_chan_2ghz, nitems(def_chan_2ghz), bands, 0);
3606         if (isset(bands, IEEE80211_MODE_11A)) {
3607                 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans,
3608                     def_chan_5ghz_band1, nitems(def_chan_5ghz_band1),
3609                     bands, 0);
3610                 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans,
3611                     def_chan_5ghz_band2, nitems(def_chan_5ghz_band2),
3612                     bands, 0);
3613                 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans,
3614                     def_chan_5ghz_band3, nitems(def_chan_5ghz_band3),
3615                     bands, 0);
3616         }
3617 }