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