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 struct ieee80211vap *iwi_vap_create(struct ieee80211com *,
 134                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
 135                     const uint8_t [IEEE80211_ADDR_LEN],
 136                     const uint8_t [IEEE80211_ADDR_LEN]);
 137 static void     iwi_vap_delete(struct ieee80211vap *);
 138 static void     iwi_dma_map_addr(void *, bus_dma_segment_t *, int, int);
 139 static int      iwi_alloc_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *,
 140                     int);
 141 static void     iwi_reset_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *);
 142 static void     iwi_free_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *);
 143 static int      iwi_alloc_tx_ring(struct iwi_softc *, struct iwi_tx_ring *,
 144                     int, bus_addr_t, bus_addr_t);
 145 static void     iwi_reset_tx_ring(struct iwi_softc *, struct iwi_tx_ring *);
 146 static void     iwi_free_tx_ring(struct iwi_softc *, struct iwi_tx_ring *);
 147 static int      iwi_alloc_rx_ring(struct iwi_softc *, struct iwi_rx_ring *,
 148                     int);
 149 static void     iwi_reset_rx_ring(struct iwi_softc *, struct iwi_rx_ring *);
 150 static void     iwi_free_rx_ring(struct iwi_softc *, struct iwi_rx_ring *);
 151 static struct ieee80211_node *iwi_node_alloc(struct ieee80211vap *,
 152                     const uint8_t [IEEE80211_ADDR_LEN]);
 153 static void     iwi_node_free(struct ieee80211_node *);
 154 static void     iwi_media_status(struct ifnet *, struct ifmediareq *);
 155 static int      iwi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 156 static void     iwi_wme_init(struct iwi_softc *);
 157 static int      iwi_wme_setparams(struct iwi_softc *);
 158 static int      iwi_wme_update(struct ieee80211com *);
 159 static uint16_t iwi_read_prom_word(struct iwi_softc *, uint8_t);
 160 static void     iwi_frame_intr(struct iwi_softc *, struct iwi_rx_data *, int,
 161                     struct iwi_frame *);
 162 static void     iwi_notification_intr(struct iwi_softc *, struct iwi_notif *);
 163 static void     iwi_rx_intr(struct iwi_softc *);
 164 static void     iwi_tx_intr(struct iwi_softc *, struct iwi_tx_ring *);
 165 static void     iwi_intr(void *);
 166 static int      iwi_cmd(struct iwi_softc *, uint8_t, void *, uint8_t);
 167 static void     iwi_write_ibssnode(struct iwi_softc *, const u_int8_t [], int);
 168 static int      iwi_tx_start(struct iwi_softc *, struct mbuf *,
 169                     struct ieee80211_node *, int);
 170 static int      iwi_raw_xmit(struct ieee80211_node *, struct mbuf *,
 171                     const struct ieee80211_bpf_params *);
 172 static void     iwi_start(struct iwi_softc *);
 173 static int      iwi_transmit(struct ieee80211com *, struct mbuf *);
 174 static void     iwi_watchdog(void *);
 175 static int      iwi_ioctl(struct ieee80211com *, u_long, void *);
 176 static void     iwi_parent(struct ieee80211com *);
 177 static void     iwi_stop_master(struct iwi_softc *);
 178 static int      iwi_reset(struct iwi_softc *);
 179 static int      iwi_load_ucode(struct iwi_softc *, const struct iwi_fw *);
 180 static int      iwi_load_firmware(struct iwi_softc *, const struct iwi_fw *);
 181 static void     iwi_release_fw_dma(struct iwi_softc *sc);
 182 static int      iwi_config(struct iwi_softc *);
 183 static int      iwi_get_firmware(struct iwi_softc *, enum ieee80211_opmode);
 184 static void     iwi_put_firmware(struct iwi_softc *);
 185 static void     iwi_monitor_scan(void *, int);
 186 static int      iwi_scanchan(struct iwi_softc *, unsigned long, int);
 187 static void     iwi_scan_start(struct ieee80211com *);
 188 static void     iwi_scan_end(struct ieee80211com *);
 189 static void     iwi_set_channel(struct ieee80211com *);
 190 static void     iwi_scan_curchan(struct ieee80211_scan_state *, unsigned long maxdwell);
 191 static void     iwi_scan_mindwell(struct ieee80211_scan_state *);
 192 static int      iwi_auth_and_assoc(struct iwi_softc *, struct ieee80211vap *);
 193 static void     iwi_disassoc(void *, int);
 194 static int      iwi_disassociate(struct iwi_softc *, int quiet);
 195 static void     iwi_init_locked(struct iwi_softc *);
 196 static void     iwi_init(void *);
 197 static int      iwi_init_fw_dma(struct iwi_softc *, int);
 198 static void     iwi_stop_locked(void *);
 199 static void     iwi_stop(struct iwi_softc *);
 200 static void     iwi_restart(void *, int);
 201 static int      iwi_getrfkill(struct iwi_softc *);
 202 static void     iwi_radio_on(void *, int);
 203 static void     iwi_radio_off(void *, int);
 204 static void     iwi_sysctlattach(struct iwi_softc *);
 205 static void     iwi_led_event(struct iwi_softc *, int);
 206 static void     iwi_ledattach(struct iwi_softc *);
 207
 208 static int iwi_probe(device_t);
 209 static int iwi_attach(device_t);
 210 static int iwi_detach(device_t);
 211 static int iwi_shutdown(device_t);
 212 static int iwi_suspend(device_t);
 213 static int iwi_resume(device_t);
 214
 215 static device_method_t iwi_methods[] = {
 216         /* Device interface */
 217         DEVMETHOD(device_probe,         iwi_probe),
 218         DEVMETHOD(device_attach,        iwi_attach),
 219         DEVMETHOD(device_detach,        iwi_detach),
 220         DEVMETHOD(device_shutdown,      iwi_shutdown),
 221         DEVMETHOD(device_suspend,       iwi_suspend),
 222         DEVMETHOD(device_resume,        iwi_resume),
 223
 224         DEVMETHOD_END
 225 };
 226
 227 static driver_t iwi_driver = {
 228         "iwi",
 229         iwi_methods,
 230         sizeof (struct iwi_softc)
 231 };
 232
 233 static devclass_t iwi_devclass;
 234
 235 DRIVER_MODULE(iwi, pci, iwi_driver, iwi_devclass, NULL, NULL);
 236
 237 MODULE_VERSION(iwi, 1);
 238
 239 static __inline uint8_t
 240 MEM_READ_1(struct iwi_softc *sc, uint32_t addr)
 241 {
 242         CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
 243         return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA);
 244 }
 245
 246 static __inline uint32_t
 247 MEM_READ_4(struct iwi_softc *sc, uint32_t addr)
 248 {
 249         CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
 250         return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA);
 251 }
 252
 253 static int
 254 iwi_probe(device_t dev)
 255 {
 256         const struct iwi_ident *ident;
 257
 258         for (ident = iwi_ident_table; ident->name != NULL; ident++) {
 259                 if (pci_get_vendor(dev) == ident->vendor &&
 260                     pci_get_device(dev) == ident->device) {
 261                         device_set_desc(dev, ident->name);
 262                         return (BUS_PROBE_DEFAULT);
 263                 }
 264         }
 265         return ENXIO;
 266 }
 267
 268 static int
 269 iwi_attach(device_t dev)
 270 {
 271         struct iwi_softc *sc = device_get_softc(dev);
 272         struct ieee80211com *ic = &sc->sc_ic;
 273         uint16_t val;
 274         uint8_t bands[IEEE80211_MODE_BYTES];
 275         int i, error;
 276
 277         sc->sc_dev = dev;
 278
 279         IWI_LOCK_INIT(sc);
 280         mbufq_init(&sc->sc_snd, ifqmaxlen);
 281
 282         sc->sc_unr = new_unrhdr(1, IWI_MAX_IBSSNODE-1, &sc->sc_mtx);
 283
 284         TASK_INIT(&sc->sc_radiontask, 0, iwi_radio_on, sc);
 285         TASK_INIT(&sc->sc_radiofftask, 0, iwi_radio_off, sc);
 286         TASK_INIT(&sc->sc_restarttask, 0, iwi_restart, sc);
 287         TASK_INIT(&sc->sc_disassoctask, 0, iwi_disassoc, sc);
 288         TASK_INIT(&sc->sc_monitortask, 0, iwi_monitor_scan, sc);
 289
 290         callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
 291         callout_init_mtx(&sc->sc_rftimer, &sc->sc_mtx, 0);
 292
 293         pci_write_config(dev, 0x41, 0, 1);
 294
 295         /* enable bus-mastering */
 296         pci_enable_busmaster(dev);
 297
 298         i = PCIR_BAR(0);
 299         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
 300         if (sc->mem == NULL) {
 301                 device_printf(dev, "could not allocate memory resource\n");
 302                 goto fail;
 303         }
 304
 305         sc->sc_st = rman_get_bustag(sc->mem);
 306         sc->sc_sh = rman_get_bushandle(sc->mem);
 307
 308         i = 0;
 309         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
 310             RF_ACTIVE | RF_SHAREABLE);
 311         if (sc->irq == NULL) {
 312                 device_printf(dev, "could not allocate interrupt resource\n");
 313                 goto fail;
 314         }
 315
 316         if (iwi_reset(sc) != 0) {
 317                 device_printf(dev, "could not reset adapter\n");
 318                 goto fail;
 319         }
 320
 321         /*
 322          * Allocate rings.
 323          */
 324         if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) {
 325                 device_printf(dev, "could not allocate Cmd ring\n");
 326                 goto fail;
 327         }
 328
 329         for (i = 0; i < 4; i++) {
 330                 error = iwi_alloc_tx_ring(sc, &sc->txq[i], IWI_TX_RING_COUNT,
 331                     IWI_CSR_TX1_RIDX + i * 4,
 332                     IWI_CSR_TX1_WIDX + i * 4);
 333                 if (error != 0) {
 334                         device_printf(dev, "could not allocate Tx ring %d\n",
 335                                 i+i);
 336                         goto fail;
 337                 }
 338         }
 339
 340         if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) {
 341                 device_printf(dev, "could not allocate Rx ring\n");
 342                 goto fail;
 343         }
 344
 345         iwi_wme_init(sc);
 346
 347         ic->ic_softc = sc;
 348         ic->ic_name = device_get_nameunit(dev);
 349         ic->ic_opmode = IEEE80211_M_STA;
 350         ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
 351
 352         /* set device capabilities */
 353         ic->ic_caps =
 354               IEEE80211_C_STA           /* station mode supported */
 355             | IEEE80211_C_IBSS          /* IBSS mode supported */
 356             | IEEE80211_C_MONITOR       /* monitor mode supported */
 357             | IEEE80211_C_PMGT          /* power save supported */
 358             | IEEE80211_C_SHPREAMBLE    /* short preamble supported */
 359             | IEEE80211_C_WPA           /* 802.11i */
 360             | IEEE80211_C_WME           /* 802.11e */
 361 #if 0
 362             | IEEE80211_C_BGSCAN        /* capable of bg scanning */
 363 #endif
 364             ;
 365
 366         /* read MAC address from EEPROM */
 367         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0);
 368         ic->ic_macaddr[0] = val & 0xff;
 369         ic->ic_macaddr[1] = val >> 8;
 370         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1);
 371         ic->ic_macaddr[2] = val & 0xff;
 372         ic->ic_macaddr[3] = val >> 8;
 373         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2);
 374         ic->ic_macaddr[4] = val & 0xff;
 375         ic->ic_macaddr[5] = val >> 8;
 376
 377         memset(bands, 0, sizeof(bands));
 378         setbit(bands, IEEE80211_MODE_11B);
 379         setbit(bands, IEEE80211_MODE_11G);
 380         if (pci_get_device(dev) >= 0x4223)
 381                 setbit(bands, IEEE80211_MODE_11A);
 382         ieee80211_init_channels(ic, NULL, bands);
 383
 384         ieee80211_ifattach(ic);
 385         /* override default methods */
 386         ic->ic_node_alloc = iwi_node_alloc;
 387         sc->sc_node_free = ic->ic_node_free;
 388         ic->ic_node_free = iwi_node_free;
 389         ic->ic_raw_xmit = iwi_raw_xmit;
 390         ic->ic_scan_start = iwi_scan_start;
 391         ic->ic_scan_end = iwi_scan_end;
 392         ic->ic_set_channel = iwi_set_channel;
 393         ic->ic_scan_curchan = iwi_scan_curchan;
 394         ic->ic_scan_mindwell = iwi_scan_mindwell;
 395         ic->ic_wme.wme_update = iwi_wme_update;
 396
 397         ic->ic_vap_create = iwi_vap_create;
 398         ic->ic_vap_delete = iwi_vap_delete;
 399         ic->ic_ioctl = iwi_ioctl;
 400         ic->ic_transmit = iwi_transmit;
 401         ic->ic_parent = iwi_parent;
 402
 403         ieee80211_radiotap_attach(ic,
 404             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 405                 IWI_TX_RADIOTAP_PRESENT,
 406             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 407                 IWI_RX_RADIOTAP_PRESENT);
 408
 409         iwi_sysctlattach(sc);
 410         iwi_ledattach(sc);
 411
 412         /*
 413          * Hook our interrupt after all initialization is complete.
 414          */
 415         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 416             NULL, iwi_intr, sc, &sc->sc_ih);
 417         if (error != 0) {
 418                 device_printf(dev, "could not set up interrupt\n");
 419                 goto fail;
 420         }
 421
 422         if (bootverbose)
 423                 ieee80211_announce(ic);
 424
 425         return 0;
 426 fail:
 427         /* XXX fix */
 428         iwi_detach(dev);
 429         return ENXIO;
 430 }
 431
 432 static int
 433 iwi_detach(device_t dev)
 434 {
 435         struct iwi_softc *sc = device_get_softc(dev);
 436         struct ieee80211com *ic = &sc->sc_ic;
 437
 438         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 439
 440         /* NB: do early to drain any pending tasks */
 441         ieee80211_draintask(ic, &sc->sc_radiontask);
 442         ieee80211_draintask(ic, &sc->sc_radiofftask);
 443         ieee80211_draintask(ic, &sc->sc_restarttask);
 444         ieee80211_draintask(ic, &sc->sc_disassoctask);
 445         ieee80211_draintask(ic, &sc->sc_monitortask);
 446
 447         iwi_stop(sc);
 448
 449         ieee80211_ifdetach(ic);
 450
 451         iwi_put_firmware(sc);
 452         iwi_release_fw_dma(sc);
 453
 454         iwi_free_cmd_ring(sc, &sc->cmdq);
 455         iwi_free_tx_ring(sc, &sc->txq[0]);
 456         iwi_free_tx_ring(sc, &sc->txq[1]);
 457         iwi_free_tx_ring(sc, &sc->txq[2]);
 458         iwi_free_tx_ring(sc, &sc->txq[3]);
 459         iwi_free_rx_ring(sc, &sc->rxq);
 460
 461         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 462
 463         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
 464             sc->mem);
 465
 466         delete_unrhdr(sc->sc_unr);
 467         mbufq_drain(&sc->sc_snd);
 468
 469         IWI_LOCK_DESTROY(sc);
 470
 471         return 0;
 472 }
 473
 474 static struct ieee80211vap *
 475 iwi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 476     enum ieee80211_opmode opmode, int flags,
 477     const uint8_t bssid[IEEE80211_ADDR_LEN],
 478     const uint8_t mac[IEEE80211_ADDR_LEN])
 479 {
 480         struct iwi_softc *sc = ic->ic_softc;
 481         struct iwi_vap *ivp;
 482         struct ieee80211vap *vap;
 483         int i;
 484
 485         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 486                 return NULL;
 487         /*
 488          * Get firmware image (and possibly dma memory) on mode change.
 489          */
 490         if (iwi_get_firmware(sc, opmode))
 491                 return NULL;
 492         /* allocate DMA memory for mapping firmware image */
 493         i = sc->fw_fw.size;
 494         if (sc->fw_boot.size > i)
 495                 i = sc->fw_boot.size;
 496         /* XXX do we dma the ucode as well ? */
 497         if (sc->fw_uc.size > i)
 498                 i = sc->fw_uc.size;
 499         if (iwi_init_fw_dma(sc, i))
 500                 return NULL;
 501
 502         ivp = malloc(sizeof(struct iwi_vap), M_80211_VAP, M_WAITOK | M_ZERO);
 503         vap = &ivp->iwi_vap;
 504         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
 505         /* override the default, the setting comes from the linux driver */
 506         vap->iv_bmissthreshold = 24;
 507         /* override with driver methods */
 508         ivp->iwi_newstate = vap->iv_newstate;
 509         vap->iv_newstate = iwi_newstate;
 510
 511         /* complete setup */
 512         ieee80211_vap_attach(vap, ieee80211_media_change, iwi_media_status,
 513             mac);
 514         ic->ic_opmode = opmode;
 515         return vap;
 516 }
 517
 518 static void
 519 iwi_vap_delete(struct ieee80211vap *vap)
 520 {
 521         struct iwi_vap *ivp = IWI_VAP(vap);
 522
 523         ieee80211_vap_detach(vap);
 524         free(ivp, M_80211_VAP);
 525 }
 526
 527 static void
 528 iwi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
 529 {
 530         if (error != 0)
 531                 return;
 532
 533         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
 534
 535         *(bus_addr_t *)arg = segs[0].ds_addr;
 536 }
 537
 538 static int
 539 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, int count)
 540 {
 541         int error;
 542
 543         ring->count = count;
 544         ring->queued = 0;
 545         ring->cur = ring->next = 0;
 546
 547         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
 548             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 549             count * IWI_CMD_DESC_SIZE, 1, count * IWI_CMD_DESC_SIZE, 0,
 550             NULL, NULL, &ring->desc_dmat);
 551         if (error != 0) {
 552                 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
 553                 goto fail;
 554         }
 555
 556         error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
 557             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
 558         if (error != 0) {
 559                 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
 560                 goto fail;
 561         }
 562
 563         error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
 564             count * IWI_CMD_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
 565         if (error != 0) {
 566                 device_printf(sc->sc_dev, "could not load desc DMA map\n");
 567                 goto fail;
 568         }
 569
 570         return 0;
 571
 572 fail:   iwi_free_cmd_ring(sc, ring);
 573         return error;
 574 }
 575
 576 static void
 577 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
 578 {
 579         ring->queued = 0;
 580         ring->cur = ring->next = 0;
 581 }
 582
 583 static void
 584 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
 585 {
 586         if (ring->desc != NULL) {
 587                 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
 588                     BUS_DMASYNC_POSTWRITE);
 589                 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
 590                 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
 591         }
 592
 593         if (ring->desc_dmat != NULL)
 594                 bus_dma_tag_destroy(ring->desc_dmat);
 595 }
 596
 597 static int
 598 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, int count,
 599     bus_addr_t csr_ridx, bus_addr_t csr_widx)
 600 {
 601         int i, error;
 602
 603         ring->count = count;
 604         ring->queued = 0;
 605         ring->cur = ring->next = 0;
 606         ring->csr_ridx = csr_ridx;
 607         ring->csr_widx = csr_widx;
 608
 609         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
 610             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 611             count * IWI_TX_DESC_SIZE, 1, count * IWI_TX_DESC_SIZE, 0, NULL,
 612             NULL, &ring->desc_dmat);
 613         if (error != 0) {
 614                 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
 615                 goto fail;
 616         }
 617
 618         error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
 619             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
 620         if (error != 0) {
 621                 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
 622                 goto fail;
 623         }
 624
 625         error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
 626             count * IWI_TX_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
 627         if (error != 0) {
 628                 device_printf(sc->sc_dev, "could not load desc DMA map\n");
 629                 goto fail;
 630         }
 631
 632         ring->data = malloc(count * sizeof (struct iwi_tx_data), M_DEVBUF,
 633             M_NOWAIT | M_ZERO);
 634         if (ring->data == NULL) {
 635                 device_printf(sc->sc_dev, "could not allocate soft data\n");
 636                 error = ENOMEM;
 637                 goto fail;
 638         }
 639
 640         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 641         BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
 642         IWI_MAX_NSEG, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
 643         if (error != 0) {
 644                 device_printf(sc->sc_dev, "could not create data DMA tag\n");
 645                 goto fail;
 646         }
 647
 648         for (i = 0; i < count; i++) {
 649                 error = bus_dmamap_create(ring->data_dmat, 0,
 650                     &ring->data[i].map);
 651                 if (error != 0) {
 652                         device_printf(sc->sc_dev, "could not create DMA map\n");
 653                         goto fail;
 654                 }
 655         }
 656
 657         return 0;
 658
 659 fail:   iwi_free_tx_ring(sc, ring);
 660         return error;
 661 }
 662
 663 static void
 664 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
 665 {
 666         struct iwi_tx_data *data;
 667         int i;
 668
 669         for (i = 0; i < ring->count; i++) {
 670                 data = &ring->data[i];
 671
 672                 if (data->m != NULL) {
 673                         bus_dmamap_sync(ring->data_dmat, data->map,
 674                             BUS_DMASYNC_POSTWRITE);
 675                         bus_dmamap_unload(ring->data_dmat, data->map);
 676                         m_freem(data->m);
 677                         data->m = NULL;
 678                 }
 679
 680                 if (data->ni != NULL) {
 681                         ieee80211_free_node(data->ni);
 682                         data->ni = NULL;
 683                 }
 684         }
 685
 686         ring->queued = 0;
 687         ring->cur = ring->next = 0;
 688 }
 689
 690 static void
 691 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
 692 {
 693         struct iwi_tx_data *data;
 694         int i;
 695
 696         if (ring->desc != NULL) {
 697                 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
 698                     BUS_DMASYNC_POSTWRITE);
 699                 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
 700                 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
 701         }
 702
 703         if (ring->desc_dmat != NULL)
 704                 bus_dma_tag_destroy(ring->desc_dmat);
 705
 706         if (ring->data != NULL) {
 707                 for (i = 0; i < ring->count; i++) {
 708                         data = &ring->data[i];
 709
 710                         if (data->m != NULL) {
 711                                 bus_dmamap_sync(ring->data_dmat, data->map,
 712                                     BUS_DMASYNC_POSTWRITE);
 713                                 bus_dmamap_unload(ring->data_dmat, data->map);
 714                                 m_freem(data->m);
 715                         }
 716
 717                         if (data->ni != NULL)
 718                                 ieee80211_free_node(data->ni);
 719
 720                         if (data->map != NULL)
 721                                 bus_dmamap_destroy(ring->data_dmat, data->map);
 722                 }
 723
 724                 free(ring->data, M_DEVBUF);
 725         }
 726
 727         if (ring->data_dmat != NULL)
 728                 bus_dma_tag_destroy(ring->data_dmat);
 729 }
 730
 731 static int
 732 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, int count)
 733 {
 734         struct iwi_rx_data *data;
 735         int i, error;
 736
 737         ring->count = count;
 738         ring->cur = 0;
 739
 740         ring->data = malloc(count * sizeof (struct iwi_rx_data), M_DEVBUF,
 741             M_NOWAIT | M_ZERO);
 742         if (ring->data == NULL) {
 743                 device_printf(sc->sc_dev, "could not allocate soft data\n");
 744                 error = ENOMEM;
 745                 goto fail;
 746         }
 747
 748         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 749             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
 750             1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
 751         if (error != 0) {
 752                 device_printf(sc->sc_dev, "could not create data DMA tag\n");
 753                 goto fail;
 754         }
 755
 756         for (i = 0; i < count; i++) {
 757                 data = &ring->data[i];
 758
 759                 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
 760                 if (error != 0) {
 761                         device_printf(sc->sc_dev, "could not create DMA map\n");
 762                         goto fail;
 763                 }
 764
 765                 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 766                 if (data->m == NULL) {
 767                         device_printf(sc->sc_dev,
 768                             "could not allocate rx mbuf\n");
 769                         error = ENOMEM;
 770                         goto fail;
 771                 }
 772
 773                 error = bus_dmamap_load(ring->data_dmat, data->map,
 774                     mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
 775                     &data->physaddr, 0);
 776                 if (error != 0) {
 777                         device_printf(sc->sc_dev,
 778                             "could not load rx buf DMA map");
 779                         goto fail;
 780                 }
 781
 782                 data->reg = IWI_CSR_RX_BASE + i * 4;
 783         }
 784
 785         return 0;
 786
 787 fail:   iwi_free_rx_ring(sc, ring);
 788         return error;
 789 }
 790
 791 static void
 792 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
 793 {
 794         ring->cur = 0;
 795 }
 796
 797 static void
 798 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
 799 {
 800         struct iwi_rx_data *data;
 801         int i;
 802
 803         if (ring->data != NULL) {
 804                 for (i = 0; i < ring->count; i++) {
 805                         data = &ring->data[i];
 806
 807                         if (data->m != NULL) {
 808                                 bus_dmamap_sync(ring->data_dmat, data->map,
 809                                     BUS_DMASYNC_POSTREAD);
 810                                 bus_dmamap_unload(ring->data_dmat, data->map);
 811                                 m_freem(data->m);
 812                         }
 813
 814                         if (data->map != NULL)
 815                                 bus_dmamap_destroy(ring->data_dmat, data->map);
 816                 }
 817
 818                 free(ring->data, M_DEVBUF);
 819         }
 820
 821         if (ring->data_dmat != NULL)
 822                 bus_dma_tag_destroy(ring->data_dmat);
 823 }
 824
 825 static int
 826 iwi_shutdown(device_t dev)
 827 {
 828         struct iwi_softc *sc = device_get_softc(dev);
 829
 830         iwi_stop(sc);
 831         iwi_put_firmware(sc);           /* ??? XXX */
 832
 833         return 0;
 834 }
 835
 836 static int
 837 iwi_suspend(device_t dev)
 838 {
 839         struct iwi_softc *sc = device_get_softc(dev);
 840         struct ieee80211com *ic = &sc->sc_ic;
 841
 842         ieee80211_suspend_all(ic);
 843         return 0;
 844 }
 845
 846 static int
 847 iwi_resume(device_t dev)
 848 {
 849         struct iwi_softc *sc = device_get_softc(dev);
 850         struct ieee80211com *ic = &sc->sc_ic;
 851
 852         pci_write_config(dev, 0x41, 0, 1);
 853
 854         ieee80211_resume_all(ic);
 855         return 0;
 856 }
 857
 858 static struct ieee80211_node *
 859 iwi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
 860 {
 861         struct iwi_node *in;
 862
 863         in = malloc(sizeof (struct iwi_node), M_80211_NODE, M_NOWAIT | M_ZERO);
 864         if (in == NULL)
 865                 return NULL;
 866         /* XXX assign sta table entry for adhoc */
 867         in->in_station = -1;
 868
 869         return &in->in_node;
 870 }
 871
 872 static void
 873 iwi_node_free(struct ieee80211_node *ni)
 874 {
 875         struct ieee80211com *ic = ni->ni_ic;
 876         struct iwi_softc *sc = ic->ic_softc;
 877         struct iwi_node *in = (struct iwi_node *)ni;
 878
 879         if (in->in_station != -1) {
 880                 DPRINTF(("%s mac %6D station %u\n", __func__,
 881                     ni->ni_macaddr, ":", in->in_station));
 882                 free_unr(sc->sc_unr, in->in_station);
 883         }
 884
 885         sc->sc_node_free(ni);
 886 }
 887
 888 /*
 889  * Convert h/w rate code to IEEE rate code.
 890  */
 891 static int
 892 iwi_cvtrate(int iwirate)
 893 {
 894         switch (iwirate) {
 895         case IWI_RATE_DS1:      return 2;
 896         case IWI_RATE_DS2:      return 4;
 897         case IWI_RATE_DS5:      return 11;
 898         case IWI_RATE_DS11:     return 22;
 899         case IWI_RATE_OFDM6:    return 12;
 900         case IWI_RATE_OFDM9:    return 18;
 901         case IWI_RATE_OFDM12:   return 24;
 902         case IWI_RATE_OFDM18:   return 36;
 903         case IWI_RATE_OFDM24:   return 48;
 904         case IWI_RATE_OFDM36:   return 72;
 905         case IWI_RATE_OFDM48:   return 96;
 906         case IWI_RATE_OFDM54:   return 108;
 907         }
 908         return 0;
 909 }
 910
 911 /*
 912  * The firmware automatically adapts the transmit speed.  We report its current
 913  * value here.
 914  */
 915 static void
 916 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 917 {
 918         struct ieee80211vap *vap = ifp->if_softc;
 919         struct ieee80211com *ic = vap->iv_ic;
 920         struct iwi_softc *sc = ic->ic_softc;
 921         struct ieee80211_node *ni;
 922
 923         /* read current transmission rate from adapter */
 924         ni = ieee80211_ref_node(vap->iv_bss);
 925         ni->ni_txrate =
 926             iwi_cvtrate(CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE));
 927         ieee80211_free_node(ni);
 928         ieee80211_media_status(ifp, imr);
 929 }
 930
 931 static int
 932 iwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 933 {
 934         struct iwi_vap *ivp = IWI_VAP(vap);
 935         struct ieee80211com *ic = vap->iv_ic;
 936         struct iwi_softc *sc = ic->ic_softc;
 937         IWI_LOCK_DECL;
 938
 939         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
 940                 ieee80211_state_name[vap->iv_state],
 941                 ieee80211_state_name[nstate], sc->flags));
 942
 943         IEEE80211_UNLOCK(ic);
 944         IWI_LOCK(sc);
 945         switch (nstate) {
 946         case IEEE80211_S_INIT:
 947                 /*
 948                  * NB: don't try to do this if iwi_stop_master has
 949                  *     shutdown the firmware and disabled interrupts.
 950                  */
 951                 if (vap->iv_state == IEEE80211_S_RUN &&
 952                     (sc->flags & IWI_FLAG_FW_INITED))
 953                         iwi_disassociate(sc, 0);
 954                 break;
 955         case IEEE80211_S_AUTH:
 956                 iwi_auth_and_assoc(sc, vap);
 957                 break;
 958         case IEEE80211_S_RUN:
 959                 if (vap->iv_opmode == IEEE80211_M_IBSS &&
 960                     vap->iv_state == IEEE80211_S_SCAN) {
 961                         /*
 962                          * XXX when joining an ibss network we are called
 963                          * with a SCAN -> RUN transition on scan complete.
 964                          * Use that to call iwi_auth_and_assoc.  On completing
 965                          * the join we are then called again with an
 966                          * AUTH -> RUN transition and we want to do nothing.
 967                          * This is all totally bogus and needs to be redone.
 968                          */
 969                         iwi_auth_and_assoc(sc, vap);
 970                 } else if (vap->iv_opmode == IEEE80211_M_MONITOR)
 971                         ieee80211_runtask(ic, &sc->sc_monitortask);
 972                 break;
 973         case IEEE80211_S_ASSOC:
 974                 /*
 975                  * If we are transitioning from AUTH then just wait
 976                  * for the ASSOC status to come back from the firmware.
 977                  * Otherwise we need to issue the association request.
 978                  */
 979                 if (vap->iv_state == IEEE80211_S_AUTH)
 980                         break;
 981                 iwi_auth_and_assoc(sc, vap);
 982                 break;
 983         default:
 984                 break;
 985         }
 986         IWI_UNLOCK(sc);
 987         IEEE80211_LOCK(ic);
 988         return ivp->iwi_newstate(vap, nstate, arg);
 989 }
 990
 991 /*
 992  * WME parameters coming from IEEE 802.11e specification.  These values are
 993  * already declared in ieee80211_proto.c, but they are static so they can't
 994  * be reused here.
 995  */
 996 static const struct wmeParams iwi_wme_cck_params[WME_NUM_AC] = {
 997         { 0, 3, 5,  7,   0 },   /* WME_AC_BE */
 998         { 0, 3, 5, 10,   0 },   /* WME_AC_BK */
 999         { 0, 2, 4,  5, 188 },   /* WME_AC_VI */
1000         { 0, 2, 3,  4, 102 }    /* WME_AC_VO */
1001 };
1002
1003 static const struct wmeParams iwi_wme_ofdm_params[WME_NUM_AC] = {
1004         { 0, 3, 4,  6,   0 },   /* WME_AC_BE */
1005         { 0, 3, 4, 10,   0 },   /* WME_AC_BK */
1006         { 0, 2, 3,  4,  94 },   /* WME_AC_VI */
1007         { 0, 2, 2,  3,  47 }    /* WME_AC_VO */
1008 };
1009 #define IWI_EXP2(v)     htole16((1 << (v)) - 1)
1010 #define IWI_USEC(v)     htole16(IEEE80211_TXOP_TO_US(v))
1011
1012 static void
1013 iwi_wme_init(struct iwi_softc *sc)
1014 {
1015         const struct wmeParams *wmep;
1016         int ac;
1017
1018         memset(sc->wme, 0, sizeof sc->wme);
1019         for (ac = 0; ac < WME_NUM_AC; ac++) {
1020                 /* set WME values for CCK modulation */
1021                 wmep = &iwi_wme_cck_params[ac];
1022                 sc->wme[1].aifsn[ac] = wmep->wmep_aifsn;
1023                 sc->wme[1].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1024                 sc->wme[1].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1025                 sc->wme[1].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1026                 sc->wme[1].acm[ac]   = wmep->wmep_acm;
1027
1028                 /* set WME values for OFDM modulation */
1029                 wmep = &iwi_wme_ofdm_params[ac];
1030                 sc->wme[2].aifsn[ac] = wmep->wmep_aifsn;
1031                 sc->wme[2].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1032                 sc->wme[2].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1033                 sc->wme[2].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1034                 sc->wme[2].acm[ac]   = wmep->wmep_acm;
1035         }
1036 }
1037
1038 static int
1039 iwi_wme_setparams(struct iwi_softc *sc)
1040 {
1041         struct ieee80211com *ic = &sc->sc_ic;
1042         const struct wmeParams *wmep;
1043         int ac;
1044
1045         for (ac = 0; ac < WME_NUM_AC; ac++) {
1046                 /* set WME values for current operating mode */
1047                 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac];
1048                 sc->wme[0].aifsn[ac] = wmep->wmep_aifsn;
1049                 sc->wme[0].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1050                 sc->wme[0].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1051                 sc->wme[0].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1052                 sc->wme[0].acm[ac]   = wmep->wmep_acm;
1053         }
1054
1055         DPRINTF(("Setting WME parameters\n"));
1056         return iwi_cmd(sc, IWI_CMD_SET_WME_PARAMS, sc->wme, sizeof sc->wme);
1057 }
1058 #undef IWI_USEC
1059 #undef IWI_EXP2
1060
1061 static int
1062 iwi_wme_update(struct ieee80211com *ic)
1063 {
1064         struct iwi_softc *sc = ic->ic_softc;
1065         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1066         IWI_LOCK_DECL;
1067
1068         /*
1069          * We may be called to update the WME parameters in
1070          * the adapter at various places.  If we're already
1071          * associated then initiate the request immediately;
1072          * otherwise we assume the params will get sent down
1073          * to the adapter as part of the work iwi_auth_and_assoc
1074          * does.
1075          */
1076         if (vap->iv_state == IEEE80211_S_RUN) {
1077                 IWI_LOCK(sc);
1078                 iwi_wme_setparams(sc);
1079                 IWI_UNLOCK(sc);
1080         }
1081         return (0);
1082 }
1083
1084 static int
1085 iwi_wme_setie(struct iwi_softc *sc)
1086 {
1087         struct ieee80211_wme_info wme;
1088
1089         memset(&wme, 0, sizeof wme);
1090         wme.wme_id = IEEE80211_ELEMID_VENDOR;
1091         wme.wme_len = sizeof (struct ieee80211_wme_info) - 2;
1092         wme.wme_oui[0] = 0x00;
1093         wme.wme_oui[1] = 0x50;
1094         wme.wme_oui[2] = 0xf2;
1095         wme.wme_type = WME_OUI_TYPE;
1096         wme.wme_subtype = WME_INFO_OUI_SUBTYPE;
1097         wme.wme_version = WME_VERSION;
1098         wme.wme_info = 0;
1099
1100         DPRINTF(("Setting WME IE (len=%u)\n", wme.wme_len));
1101         return iwi_cmd(sc, IWI_CMD_SET_WMEIE, &wme, sizeof wme);
1102 }
1103
1104 /*
1105  * Read 16 bits at address 'addr' from the serial EEPROM.
1106  */
1107 static uint16_t
1108 iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr)
1109 {
1110         uint32_t tmp;
1111         uint16_t val;
1112         int n;
1113
1114         /* clock C once before the first command */
1115         IWI_EEPROM_CTL(sc, 0);
1116         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1117         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1118         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1119
1120         /* write start bit (1) */
1121         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1122         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1123
1124         /* write READ opcode (10) */
1125         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1126         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1127         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1128         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1129
1130         /* write address A7-A0 */
1131         for (n = 7; n >= 0; n--) {
1132                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1133                     (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D));
1134                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1135                     (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C);
1136         }
1137
1138         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1139
1140         /* read data Q15-Q0 */
1141         val = 0;
1142         for (n = 15; n >= 0; n--) {
1143                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1144                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1145                 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL);
1146                 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n;
1147         }
1148
1149         IWI_EEPROM_CTL(sc, 0);
1150
1151         /* clear Chip Select and clock C */
1152         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1153         IWI_EEPROM_CTL(sc, 0);
1154         IWI_EEPROM_CTL(sc, IWI_EEPROM_C);
1155
1156         return val;
1157 }
1158
1159 static void
1160 iwi_setcurchan(struct iwi_softc *sc, int chan)
1161 {
1162         struct ieee80211com *ic = &sc->sc_ic;
1163
1164         sc->curchan = chan;
1165         ieee80211_radiotap_chan_change(ic);
1166 }
1167
1168 static void
1169 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i,
1170     struct iwi_frame *frame)
1171 {
1172         struct ieee80211com *ic = &sc->sc_ic;
1173         struct mbuf *mnew, *m;
1174         struct ieee80211_node *ni;
1175         int type, error, framelen;
1176         int8_t rssi, nf;
1177         IWI_LOCK_DECL;
1178
1179         framelen = le16toh(frame->len);
1180         if (framelen < IEEE80211_MIN_LEN || framelen > MCLBYTES) {
1181                 /*
1182                  * XXX >MCLBYTES is bogus as it means the h/w dma'd
1183                  *     out of bounds; need to figure out how to limit
1184                  *     frame size in the firmware
1185                  */
1186                 /* XXX stat */
1187                 DPRINTFN(1,
1188                     ("drop rx frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1189                     le16toh(frame->len), frame->chan, frame->rssi,
1190                     frame->rssi_dbm));
1191                 return;
1192         }
1193
1194         DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1195             le16toh(frame->len), frame->chan, frame->rssi, frame->rssi_dbm));
1196
1197         if (frame->chan != sc->curchan)
1198                 iwi_setcurchan(sc, frame->chan);
1199
1200         /*
1201          * Try to allocate a new mbuf for this ring element and load it before
1202          * processing the current mbuf. If the ring element cannot be loaded,
1203          * drop the received packet and reuse the old mbuf. In the unlikely
1204          * case that the old mbuf can't be reloaded either, explicitly panic.
1205          */
1206         mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1207         if (mnew == NULL) {
1208                 counter_u64_add(ic->ic_ierrors, 1);
1209                 return;
1210         }
1211
1212         bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1213
1214         error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1215             mtod(mnew, void *), MCLBYTES, iwi_dma_map_addr, &data->physaddr,
1216             0);
1217         if (error != 0) {
1218                 m_freem(mnew);
1219
1220                 /* try to reload the old mbuf */
1221                 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1222                     mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
1223                     &data->physaddr, 0);
1224                 if (error != 0) {
1225                         /* very unlikely that it will fail... */
1226                         panic("%s: could not load old rx mbuf",
1227                             device_get_name(sc->sc_dev));
1228                 }
1229                 counter_u64_add(ic->ic_ierrors, 1);
1230                 return;
1231         }
1232
1233         /*
1234          * New mbuf successfully loaded, update Rx ring and continue
1235          * processing.
1236          */
1237         m = data->m;
1238         data->m = mnew;
1239         CSR_WRITE_4(sc, data->reg, data->physaddr);
1240
1241         /* finalize mbuf */
1242         m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) +
1243             sizeof (struct iwi_frame) + framelen;
1244
1245         m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame));
1246
1247         rssi = frame->rssi_dbm;
1248         nf = -95;
1249         if (ieee80211_radiotap_active(ic)) {
1250                 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap;
1251
1252                 tap->wr_flags = 0;
1253                 tap->wr_antsignal = rssi;
1254                 tap->wr_antnoise = nf;
1255                 tap->wr_rate = iwi_cvtrate(frame->rate);
1256                 tap->wr_antenna = frame->antenna;
1257         }
1258         IWI_UNLOCK(sc);
1259
1260         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1261         if (ni != NULL) {
1262                 type = ieee80211_input(ni, m, rssi, nf);
1263                 ieee80211_free_node(ni);
1264         } else
1265                 type = ieee80211_input_all(ic, m, rssi, nf);
1266
1267         IWI_LOCK(sc);
1268         if (sc->sc_softled) {
1269                 /*
1270                  * Blink for any data frame.  Otherwise do a
1271                  * heartbeat-style blink when idle.  The latter
1272                  * is mainly for station mode where we depend on
1273                  * periodic beacon frames to trigger the poll event.
1274                  */
1275                 if (type == IEEE80211_FC0_TYPE_DATA) {
1276                         sc->sc_rxrate = frame->rate;
1277                         iwi_led_event(sc, IWI_LED_RX);
1278                 } else if (ticks - sc->sc_ledevent >= sc->sc_ledidle)
1279                         iwi_led_event(sc, IWI_LED_POLL);
1280         }
1281 }
1282
1283 /*
1284  * Check for an association response frame to see if QoS
1285  * has been negotiated.  We parse just enough to figure
1286  * out if we're supposed to use QoS.  The proper solution
1287  * is to pass the frame up so ieee80211_input can do the
1288  * work but that's made hard by how things currently are
1289  * done in the driver.
1290  */
1291 static void
1292 iwi_checkforqos(struct ieee80211vap *vap,
1293         const struct ieee80211_frame *wh, int len)
1294 {
1295 #define SUBTYPE(wh)     ((wh)->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
1296         const uint8_t *frm, *efrm, *wme;
1297         struct ieee80211_node *ni;
1298         uint16_t capinfo, status, associd;
1299
1300         /* NB: +8 for capinfo, status, associd, and first ie */
1301         if (!(sizeof(*wh)+8 < len && len < IEEE80211_MAX_LEN) ||
1302             SUBTYPE(wh) != IEEE80211_FC0_SUBTYPE_ASSOC_RESP)
1303                 return;
1304         /*
1305          * asresp frame format
1306          *      [2] capability information
1307          *      [2] status
1308          *      [2] association ID
1309          *      [tlv] supported rates
1310          *      [tlv] extended supported rates
1311          *      [tlv] WME
1312          */
1313         frm = (const uint8_t *)&wh[1];
1314         efrm = ((const uint8_t *) wh) + len;
1315
1316         capinfo = le16toh(*(const uint16_t *)frm);
1317         frm += 2;
1318         status = le16toh(*(const uint16_t *)frm);
1319         frm += 2;
1320         associd = le16toh(*(const uint16_t *)frm);
1321         frm += 2;
1322
1323         wme = NULL;
1324         while (efrm - frm > 1) {
1325                 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return);
1326                 switch (*frm) {
1327                 case IEEE80211_ELEMID_VENDOR:
1328                         if (iswmeoui(frm))
1329                                 wme = frm;
1330                         break;
1331                 }
1332                 frm += frm[1] + 2;
1333         }
1334
1335         ni = ieee80211_ref_node(vap->iv_bss);
1336         ni->ni_capinfo = capinfo;
1337         ni->ni_associd = associd & 0x3fff;
1338         if (wme != NULL)
1339                 ni->ni_flags |= IEEE80211_NODE_QOS;
1340         else
1341                 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1342         ieee80211_free_node(ni);
1343 #undef SUBTYPE
1344 }
1345
1346 static void
1347 iwi_notif_link_quality(struct iwi_softc *sc, struct iwi_notif *notif)
1348 {
1349         struct iwi_notif_link_quality *lq;
1350         int len;
1351
1352         len = le16toh(notif->len);
1353
1354         DPRINTFN(5, ("Notification (%u) - len=%d, sizeof=%zu\n",
1355             notif->type,
1356             len,
1357             sizeof(struct iwi_notif_link_quality)
1358             ));
1359
1360         /* enforce length */
1361         if (len != sizeof(struct iwi_notif_link_quality)) {
1362                 DPRINTFN(5, ("Notification: (%u) too short (%d)\n",
1363                     notif->type,
1364                     len));
1365                 return;
1366         }
1367
1368         lq = (struct iwi_notif_link_quality *)(notif + 1);
1369         memcpy(&sc->sc_linkqual, lq, sizeof(sc->sc_linkqual));
1370         sc->sc_linkqual_valid = 1;
1371 }
1372
1373 /*
1374  * Task queue callbacks for iwi_notification_intr used to avoid LOR's.
1375  */
1376
1377 static void
1378 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif)
1379 {
1380         struct ieee80211com *ic = &sc->sc_ic;
1381         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1382         struct iwi_notif_scan_channel *chan;
1383         struct iwi_notif_scan_complete *scan;
1384         struct iwi_notif_authentication *auth;
1385         struct iwi_notif_association *assoc;
1386         struct iwi_notif_beacon_state *beacon;
1387
1388         switch (notif->type) {
1389         case IWI_NOTIF_TYPE_SCAN_CHANNEL:
1390                 chan = (struct iwi_notif_scan_channel *)(notif + 1);
1391
1392                 DPRINTFN(3, ("Scan of channel %u complete (%u)\n",
1393                     ieee80211_ieee2mhz(chan->nchan, 0), chan->nchan));
1394
1395                 /* Reset the timer, the scan is still going */
1396                 sc->sc_state_timer = 3;
1397                 break;
1398
1399         case IWI_NOTIF_TYPE_SCAN_COMPLETE:
1400                 scan = (struct iwi_notif_scan_complete *)(notif + 1);
1401
1402                 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan,
1403                     scan->status));
1404
1405                 IWI_STATE_END(sc, IWI_FW_SCANNING);
1406
1407                 /*
1408                  * Monitor mode works by doing a passive scan to set
1409                  * the channel and enable rx.  Because we don't want
1410                  * to abort a scan lest the firmware crash we scan
1411                  * for a short period of time and automatically restart
1412                  * the scan when notified the sweep has completed.
1413                  */
1414                 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
1415                         ieee80211_runtask(ic, &sc->sc_monitortask);
1416                         break;
1417                 }
1418
1419                 if (scan->status == IWI_SCAN_COMPLETED) {
1420                         /* NB: don't need to defer, net80211 does it for us */
1421                         ieee80211_scan_next(vap);
1422                 }
1423                 break;
1424
1425         case IWI_NOTIF_TYPE_AUTHENTICATION:
1426                 auth = (struct iwi_notif_authentication *)(notif + 1);
1427                 switch (auth->state) {
1428                 case IWI_AUTH_SUCCESS:
1429                         DPRINTFN(2, ("Authentication succeeeded\n"));
1430                         ieee80211_new_state(vap, IEEE80211_S_ASSOC, -1);
1431                         break;
1432                 case IWI_AUTH_FAIL:
1433                         /*
1434                          * These are delivered as an unsolicited deauth
1435                          * (e.g. due to inactivity) or in response to an
1436                          * associate request.
1437                          */
1438                         sc->flags &= ~IWI_FLAG_ASSOCIATED;
1439                         if (vap->iv_state != IEEE80211_S_RUN) {
1440                                 DPRINTFN(2, ("Authentication failed\n"));
1441                                 vap->iv_stats.is_rx_auth_fail++;
1442                                 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1443                         } else {
1444                                 DPRINTFN(2, ("Deauthenticated\n"));
1445                                 vap->iv_stats.is_rx_deauth++;
1446                         }
1447                         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1448                         break;
1449                 case IWI_AUTH_SENT_1:
1450                 case IWI_AUTH_RECV_2:
1451                 case IWI_AUTH_SEQ1_PASS:
1452                         break;
1453                 case IWI_AUTH_SEQ1_FAIL:
1454                         DPRINTFN(2, ("Initial authentication handshake failed; "
1455                                 "you probably need shared key\n"));
1456                         vap->iv_stats.is_rx_auth_fail++;
1457                         IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1458                         /* XXX retry shared key when in auto */
1459                         break;
1460                 default:
1461                         device_printf(sc->sc_dev,
1462                             "unknown authentication state %u\n", auth->state);
1463                         break;
1464                 }
1465                 break;
1466
1467         case IWI_NOTIF_TYPE_ASSOCIATION:
1468                 assoc = (struct iwi_notif_association *)(notif + 1);
1469                 switch (assoc->state) {
1470                 case IWI_AUTH_SUCCESS:
1471                         /* re-association, do nothing */
1472                         break;
1473                 case IWI_ASSOC_SUCCESS:
1474                         DPRINTFN(2, ("Association succeeded\n"));
1475                         sc->flags |= IWI_FLAG_ASSOCIATED;
1476                         IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1477                         iwi_checkforqos(vap,
1478                             (const struct ieee80211_frame *)(assoc+1),
1479                             le16toh(notif->len) - sizeof(*assoc) - 1);
1480                         ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
1481                         break;
1482                 case IWI_ASSOC_INIT:
1483                         sc->flags &= ~IWI_FLAG_ASSOCIATED;
1484                         switch (sc->fw_state) {
1485                         case IWI_FW_ASSOCIATING:
1486                                 DPRINTFN(2, ("Association failed\n"));
1487                                 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1488                                 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1489                                 break;
1490
1491                         case IWI_FW_DISASSOCIATING:
1492                                 DPRINTFN(2, ("Dissassociated\n"));
1493                                 IWI_STATE_END(sc, IWI_FW_DISASSOCIATING);
1494                                 vap->iv_stats.is_rx_disassoc++;
1495                                 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1496                                 break;
1497                         }
1498                         break;
1499                 default:
1500                         device_printf(sc->sc_dev,
1501                             "unknown association state %u\n", assoc->state);
1502                         break;
1503                 }
1504                 break;
1505
1506         case IWI_NOTIF_TYPE_BEACON:
1507                 /* XXX check struct length */
1508                 beacon = (struct iwi_notif_beacon_state *)(notif + 1);
1509
1510                 DPRINTFN(5, ("Beacon state (%u, %u)\n",
1511                     beacon->state, le32toh(beacon->number)));
1512
1513                 if (beacon->state == IWI_BEACON_MISS) {
1514                         /*
1515                          * The firmware notifies us of every beacon miss
1516                          * so we need to track the count against the
1517                          * configured threshold before notifying the
1518                          * 802.11 layer.
1519                          * XXX try to roam, drop assoc only on much higher count
1520                          */
1521                         if (le32toh(beacon->number) >= vap->iv_bmissthreshold) {
1522                                 DPRINTF(("Beacon miss: %u >= %u\n",
1523                                     le32toh(beacon->number),
1524                                     vap->iv_bmissthreshold));
1525                                 vap->iv_stats.is_beacon_miss++;
1526                                 /*
1527                                  * It's pointless to notify the 802.11 layer
1528                                  * as it'll try to send a probe request (which
1529                                  * we'll discard) and then timeout and drop us
1530                                  * into scan state.  Instead tell the firmware
1531                                  * to disassociate and then on completion we'll
1532                                  * kick the state machine to scan.
1533                                  */
1534                                 ieee80211_runtask(ic, &sc->sc_disassoctask);
1535                         }
1536                 }
1537                 break;
1538
1539         case IWI_NOTIF_TYPE_CALIBRATION:
1540         case IWI_NOTIF_TYPE_NOISE:
1541                 /* XXX handle? */
1542                 DPRINTFN(5, ("Notification (%u)\n", notif->type));
1543                 break;
1544         case IWI_NOTIF_TYPE_LINK_QUALITY:
1545                 iwi_notif_link_quality(sc, notif);
1546                 break;
1547
1548         default:
1549                 DPRINTF(("unknown notification type %u flags 0x%x len %u\n",
1550                     notif->type, notif->flags, le16toh(notif->len)));
1551                 break;
1552         }
1553 }
1554
1555 static void
1556 iwi_rx_intr(struct iwi_softc *sc)
1557 {
1558         struct iwi_rx_data *data;
1559         struct iwi_hdr *hdr;
1560         uint32_t hw;
1561
1562         hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX);
1563
1564         for (; sc->rxq.cur != hw;) {
1565                 data = &sc->rxq.data[sc->rxq.cur];
1566
1567                 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1568                     BUS_DMASYNC_POSTREAD);
1569
1570                 hdr = mtod(data->m, struct iwi_hdr *);
1571
1572                 switch (hdr->type) {
1573                 case IWI_HDR_TYPE_FRAME:
1574                         iwi_frame_intr(sc, data, sc->rxq.cur,
1575                             (struct iwi_frame *)(hdr + 1));
1576                         break;
1577
1578                 case IWI_HDR_TYPE_NOTIF:
1579                         iwi_notification_intr(sc,
1580                             (struct iwi_notif *)(hdr + 1));
1581                         break;
1582
1583                 default:
1584                         device_printf(sc->sc_dev, "unknown hdr type %u\n",
1585                             hdr->type);
1586                 }
1587
1588                 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1589
1590                 sc->rxq.cur = (sc->rxq.cur + 1) % IWI_RX_RING_COUNT;
1591         }
1592
1593         /* tell the firmware what we have processed */
1594         hw = (hw == 0) ? IWI_RX_RING_COUNT - 1 : hw - 1;
1595         CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw);
1596 }
1597
1598 static void
1599 iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq)
1600 {
1601         struct iwi_tx_data *data;
1602         uint32_t hw;
1603
1604         hw = CSR_READ_4(sc, txq->csr_ridx);
1605
1606         while (txq->next != hw) {
1607                 data = &txq->data[txq->next];
1608                 DPRINTFN(15, ("tx done idx=%u\n", txq->next));
1609                 bus_dmamap_sync(txq->data_dmat, data->map,
1610                     BUS_DMASYNC_POSTWRITE);
1611                 bus_dmamap_unload(txq->data_dmat, data->map);
1612                 ieee80211_tx_complete(data->ni, data->m, 0);
1613                 data->ni = NULL;
1614                 data->m = NULL;
1615                 txq->queued--;
1616                 txq->next = (txq->next + 1) % IWI_TX_RING_COUNT;
1617         }
1618         sc->sc_tx_timer = 0;
1619         if (sc->sc_softled)
1620                 iwi_led_event(sc, IWI_LED_TX);
1621         iwi_start(sc);
1622 }
1623
1624 static void
1625 iwi_fatal_error_intr(struct iwi_softc *sc)
1626 {
1627         struct ieee80211com *ic = &sc->sc_ic;
1628         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1629
1630         device_printf(sc->sc_dev, "firmware error\n");
1631         if (vap != NULL)
1632                 ieee80211_cancel_scan(vap);
1633         ieee80211_runtask(ic, &sc->sc_restarttask);
1634
1635         sc->flags &= ~IWI_FLAG_BUSY;
1636         sc->sc_busy_timer = 0;
1637         wakeup(sc);
1638 }
1639
1640 static void
1641 iwi_radio_off_intr(struct iwi_softc *sc)
1642 {
1643
1644         ieee80211_runtask(&sc->sc_ic, &sc->sc_radiofftask);
1645 }
1646
1647 static void
1648 iwi_intr(void *arg)
1649 {
1650         struct iwi_softc *sc = arg;
1651         uint32_t r;
1652         IWI_LOCK_DECL;
1653
1654         IWI_LOCK(sc);
1655
1656         if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) {
1657                 IWI_UNLOCK(sc);
1658                 return;
1659         }
1660
1661         /* acknowledge interrupts */
1662         CSR_WRITE_4(sc, IWI_CSR_INTR, r);
1663
1664         if (r & IWI_INTR_FATAL_ERROR) {
1665                 iwi_fatal_error_intr(sc);
1666                 goto done;
1667         }
1668
1669         if (r & IWI_INTR_FW_INITED) {
1670                 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR)))
1671                         wakeup(sc);
1672         }
1673
1674         if (r & IWI_INTR_RADIO_OFF)
1675                 iwi_radio_off_intr(sc);
1676
1677         if (r & IWI_INTR_CMD_DONE) {
1678                 sc->flags &= ~IWI_FLAG_BUSY;
1679                 sc->sc_busy_timer = 0;
1680                 wakeup(sc);
1681         }
1682
1683         if (r & IWI_INTR_TX1_DONE)
1684                 iwi_tx_intr(sc, &sc->txq[0]);
1685
1686         if (r & IWI_INTR_TX2_DONE)
1687                 iwi_tx_intr(sc, &sc->txq[1]);
1688
1689         if (r & IWI_INTR_TX3_DONE)
1690                 iwi_tx_intr(sc, &sc->txq[2]);
1691
1692         if (r & IWI_INTR_TX4_DONE)
1693                 iwi_tx_intr(sc, &sc->txq[3]);
1694
1695         if (r & IWI_INTR_RX_DONE)
1696                 iwi_rx_intr(sc);
1697
1698         if (r & IWI_INTR_PARITY_ERROR) {
1699                 /* XXX rate-limit */
1700                 device_printf(sc->sc_dev, "parity error\n");
1701         }
1702 done:
1703         IWI_UNLOCK(sc);
1704 }
1705
1706 static int
1707 iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len)
1708 {
1709         struct iwi_cmd_desc *desc;
1710
1711         IWI_LOCK_ASSERT(sc);
1712
1713         if (sc->flags & IWI_FLAG_BUSY) {
1714                 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n",
1715                         __func__, type);
1716                 return EAGAIN;
1717         }
1718         sc->flags |= IWI_FLAG_BUSY;
1719         sc->sc_busy_timer = 2;
1720
1721         desc = &sc->cmdq.desc[sc->cmdq.cur];
1722
1723         desc->hdr.type = IWI_HDR_TYPE_COMMAND;
1724         desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1725         desc->type = type;
1726         desc->len = len;
1727         memcpy(desc->data, data, len);
1728
1729         bus_dmamap_sync(sc->cmdq.desc_dmat, sc->cmdq.desc_map,
1730             BUS_DMASYNC_PREWRITE);
1731
1732         DPRINTFN(2, ("sending command idx=%u type=%u len=%u\n", sc->cmdq.cur,
1733             type, len));
1734
1735         sc->cmdq.cur = (sc->cmdq.cur + 1) % IWI_CMD_RING_COUNT;
1736         CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
1737
1738         return msleep(sc, &sc->sc_mtx, 0, "iwicmd", hz);
1739 }
1740
1741 static void
1742 iwi_write_ibssnode(struct iwi_softc *sc,
1743         const u_int8_t addr[IEEE80211_ADDR_LEN], int entry)
1744 {
1745         struct iwi_ibssnode node;
1746
1747         /* write node information into NIC memory */
1748         memset(&node, 0, sizeof node);
1749         IEEE80211_ADDR_COPY(node.bssid, addr);
1750
1751         DPRINTF(("%s mac %6D station %u\n", __func__, node.bssid, ":", entry));
1752
1753         CSR_WRITE_REGION_1(sc,
1754             IWI_CSR_NODE_BASE + entry * sizeof node,
1755             (uint8_t *)&node, sizeof node);
1756 }
1757
1758 static int
1759 iwi_tx_start(struct iwi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1760     int ac)
1761 {
1762         struct ieee80211vap *vap = ni->ni_vap;
1763         struct ieee80211com *ic = ni->ni_ic;
1764         struct iwi_node *in = (struct iwi_node *)ni;
1765         const struct ieee80211_frame *wh;
1766         struct ieee80211_key *k;
1767         const struct chanAccParams *cap;
1768         struct iwi_tx_ring *txq = &sc->txq[ac];
1769         struct iwi_tx_data *data;
1770         struct iwi_tx_desc *desc;
1771         struct mbuf *mnew;
1772         bus_dma_segment_t segs[IWI_MAX_NSEG];
1773         int error, nsegs, hdrlen, i;
1774         int ismcast, flags, xflags, staid;
1775
1776         IWI_LOCK_ASSERT(sc);
1777         wh = mtod(m0, const struct ieee80211_frame *);
1778         /* NB: only data frames use this path */
1779         hdrlen = ieee80211_hdrsize(wh);
1780         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
1781         flags = xflags = 0;
1782
1783         if (!ismcast)
1784                 flags |= IWI_DATA_FLAG_NEED_ACK;
1785         if (vap->iv_flags & IEEE80211_F_SHPREAMBLE)
1786                 flags |= IWI_DATA_FLAG_SHPREAMBLE;
1787         if (IEEE80211_QOS_HAS_SEQ(wh)) {
1788                 xflags |= IWI_DATA_XFLAG_QOS;
1789                 cap = &ic->ic_wme.wme_chanParams;
1790                 if (!cap->cap_wmeParams[ac].wmep_noackPolicy)
1791                         flags &= ~IWI_DATA_FLAG_NEED_ACK;
1792         }
1793
1794         /*
1795          * This is only used in IBSS mode where the firmware expect an index
1796          * in a h/w table instead of a destination address.
1797          */
1798         if (vap->iv_opmode == IEEE80211_M_IBSS) {
1799                 if (!ismcast) {
1800                         if (in->in_station == -1) {
1801                                 in->in_station = alloc_unr(sc->sc_unr);
1802                                 if (in->in_station == -1) {
1803                                         /* h/w table is full */
1804                                         if_inc_counter(ni->ni_vap->iv_ifp,
1805                                             IFCOUNTER_OERRORS, 1);
1806                                         m_freem(m0);
1807                                         ieee80211_free_node(ni);
1808                                         return 0;
1809                                 }
1810                                 iwi_write_ibssnode(sc,
1811                                         ni->ni_macaddr, in->in_station);
1812                         }
1813                         staid = in->in_station;
1814                 } else {
1815                         /*
1816                          * Multicast addresses have no associated node
1817                          * so there will be no station entry.  We reserve
1818                          * entry 0 for one mcast address and use that.
1819                          * If there are many being used this will be
1820                          * expensive and we'll need to do a better job
1821                          * but for now this handles the broadcast case.
1822                          */
1823                         if (!IEEE80211_ADDR_EQ(wh->i_addr1, sc->sc_mcast)) {
1824                                 IEEE80211_ADDR_COPY(sc->sc_mcast, wh->i_addr1);
1825                                 iwi_write_ibssnode(sc, sc->sc_mcast, 0);
1826                         }
1827                         staid = 0;
1828                 }
1829         } else
1830                 staid = 0;
1831
1832         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1833                 k = ieee80211_crypto_encap(ni, m0);
1834                 if (k == NULL) {
1835                         m_freem(m0);
1836                         return ENOBUFS;
1837                 }
1838
1839                 /* packet header may have moved, reset our local pointer */
1840                 wh = mtod(m0, struct ieee80211_frame *);
1841         }
1842
1843         if (ieee80211_radiotap_active_vap(vap)) {
1844                 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap;
1845
1846                 tap->wt_flags = 0;
1847
1848                 ieee80211_radiotap_tx(vap, m0);
1849         }
1850
1851         data = &txq->data[txq->cur];
1852         desc = &txq->desc[txq->cur];
1853
1854         /* save and trim IEEE802.11 header */
1855         m_copydata(m0, 0, hdrlen, (caddr_t)&desc->wh);
1856         m_adj(m0, hdrlen);
1857
1858         error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, m0, segs,
1859             &nsegs, 0);
1860         if (error != 0 && error != EFBIG) {
1861                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1862                     error);
1863                 m_freem(m0);
1864                 return error;
1865         }
1866         if (error != 0) {
1867                 mnew = m_defrag(m0, M_NOWAIT);
1868                 if (mnew == NULL) {
1869                         device_printf(sc->sc_dev,
1870                             "could not defragment mbuf\n");
1871                         m_freem(m0);
1872                         return ENOBUFS;
1873                 }
1874                 m0 = mnew;
1875
1876                 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map,
1877                     m0, segs, &nsegs, 0);
1878                 if (error != 0) {
1879                         device_printf(sc->sc_dev,
1880                             "could not map mbuf (error %d)\n", error);
1881                         m_freem(m0);
1882                         return error;
1883                 }
1884         }
1885
1886         data->m = m0;
1887         data->ni = ni;
1888
1889         desc->hdr.type = IWI_HDR_TYPE_DATA;
1890         desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1891         desc->station = staid;
1892         desc->cmd = IWI_DATA_CMD_TX;
1893         desc->len = htole16(m0->m_pkthdr.len);
1894         desc->flags = flags;
1895         desc->xflags = xflags;
1896
1897 #if 0
1898         if (vap->iv_flags & IEEE80211_F_PRIVACY)
1899                 desc->wep_txkey = vap->iv_def_txkey;
1900         else
1901 #endif
1902                 desc->flags |= IWI_DATA_FLAG_NO_WEP;
1903
1904         desc->nseg = htole32(nsegs);
1905         for (i = 0; i < nsegs; i++) {
1906                 desc->seg_addr[i] = htole32(segs[i].ds_addr);
1907                 desc->seg_len[i]  = htole16(segs[i].ds_len);
1908         }
1909
1910         bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1911         bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE);
1912
1913         DPRINTFN(5, ("sending data frame txq=%u idx=%u len=%u nseg=%u\n",
1914             ac, txq->cur, le16toh(desc->len), nsegs));
1915
1916         txq->queued++;
1917         txq->cur = (txq->cur + 1) % IWI_TX_RING_COUNT;
1918         CSR_WRITE_4(sc, txq->csr_widx, txq->cur);
1919
1920         return 0;
1921 }
1922
1923 static int
1924 iwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1925         const struct ieee80211_bpf_params *params)
1926 {
1927         /* no support; just discard */
1928         m_freem(m);
1929         ieee80211_free_node(ni);
1930         return 0;
1931 }
1932
1933 static int
1934 iwi_transmit(struct ieee80211com *ic, struct mbuf *m)
1935 {
1936         struct iwi_softc *sc = ic->ic_softc;
1937         int error;
1938         IWI_LOCK_DECL;
1939
1940         IWI_LOCK(sc);
1941         if (!sc->sc_running) {
1942                 IWI_UNLOCK(sc);
1943                 return (ENXIO);
1944         }
1945         error = mbufq_enqueue(&sc->sc_snd, m);
1946         if (error) {
1947                 IWI_UNLOCK(sc);
1948                 return (error);
1949         }
1950         iwi_start(sc);
1951         IWI_UNLOCK(sc);
1952         return (0);
1953 }
1954
1955 static void
1956 iwi_start(struct iwi_softc *sc)
1957 {
1958         struct mbuf *m;
1959         struct ieee80211_node *ni;
1960         int ac;
1961
1962         IWI_LOCK_ASSERT(sc);
1963
1964         while ((m =  mbufq_dequeue(&sc->sc_snd)) != NULL) {
1965                 ac = M_WME_GETAC(m);
1966                 if (sc->txq[ac].queued > IWI_TX_RING_COUNT - 8) {
1967                         /* there is no place left in this ring; tail drop */
1968                         /* XXX tail drop */
1969                         mbufq_prepend(&sc->sc_snd, m);
1970                         break;
1971                 }
1972                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1973                 if (iwi_tx_start(sc, m, ni, ac) != 0) {
1974                         ieee80211_free_node(ni);
1975                         if_inc_counter(ni->ni_vap->iv_ifp,
1976                             IFCOUNTER_OERRORS, 1);
1977                         break;
1978                 }
1979                 sc->sc_tx_timer = 5;
1980         }
1981 }
1982
1983 static void
1984 iwi_watchdog(void *arg)
1985 {
1986         struct iwi_softc *sc = arg;
1987         struct ieee80211com *ic = &sc->sc_ic;
1988
1989         IWI_LOCK_ASSERT(sc);
1990
1991         if (sc->sc_tx_timer > 0) {
1992                 if (--sc->sc_tx_timer == 0) {
1993                         device_printf(sc->sc_dev, "device timeout\n");
1994                         counter_u64_add(ic->ic_oerrors, 1);
1995                         ieee80211_runtask(ic, &sc->sc_restarttask);
1996                 }
1997         }
1998         if (sc->sc_state_timer > 0) {
1999                 if (--sc->sc_state_timer == 0) {
2000                         device_printf(sc->sc_dev,
2001                             "firmware stuck in state %d, resetting\n",
2002                             sc->fw_state);
2003                         if (sc->fw_state == IWI_FW_SCANNING)
2004                                 ieee80211_cancel_scan(TAILQ_FIRST(&ic->ic_vaps));
2005                         ieee80211_runtask(ic, &sc->sc_restarttask);
2006                         sc->sc_state_timer = 3;
2007                 }
2008         }
2009         if (sc->sc_busy_timer > 0) {
2010                 if (--sc->sc_busy_timer == 0) {
2011                         device_printf(sc->sc_dev,
2012                             "firmware command timeout, resetting\n");
2013                         ieee80211_runtask(ic, &sc->sc_restarttask);
2014                 }
2015         }
2016         callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
2017 }
2018
2019 static void
2020 iwi_parent(struct ieee80211com *ic)
2021 {
2022         struct iwi_softc *sc = ic->ic_softc;
2023         int startall = 0;
2024         IWI_LOCK_DECL;
2025
2026         IWI_LOCK(sc);
2027         if (ic->ic_nrunning > 0) {
2028                 if (!sc->sc_running) {
2029                         iwi_init_locked(sc);
2030                         startall = 1;
2031                 }
2032         } else if (sc->sc_running)
2033                 iwi_stop_locked(sc);
2034         IWI_UNLOCK(sc);
2035         if (startall)
2036                 ieee80211_start_all(ic);
2037 }
2038
2039 static int
2040 iwi_ioctl(struct ieee80211com *ic, u_long cmd, void *data)
2041 {
2042         struct ifreq *ifr = data;
2043         struct iwi_softc *sc = ic->ic_softc;
2044         int error;
2045         IWI_LOCK_DECL;
2046
2047         IWI_LOCK(sc);
2048         switch (cmd) {
2049         case SIOCGIWISTATS:
2050                 /* XXX validate permissions/memory/etc? */
2051                 error = copyout(&sc->sc_linkqual, ifr->ifr_data,
2052                     sizeof(struct iwi_notif_link_quality));
2053                 break;
2054         case SIOCZIWISTATS:
2055                 memset(&sc->sc_linkqual, 0,
2056                     sizeof(struct iwi_notif_link_quality));
2057                 error = 0;
2058                 break;
2059         default:
2060                 error = ENOTTY;
2061                 break;
2062         }
2063         IWI_UNLOCK(sc);
2064
2065         return (error);
2066 }
2067
2068 static void
2069 iwi_stop_master(struct iwi_softc *sc)
2070 {
2071         uint32_t tmp;
2072         int ntries;
2073
2074         /* disable interrupts */
2075         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0);
2076
2077         CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER);
2078         for (ntries = 0; ntries < 5; ntries++) {
2079                 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2080                         break;
2081                 DELAY(10);
2082         }
2083         if (ntries == 5)
2084                 device_printf(sc->sc_dev, "timeout waiting for master\n");
2085
2086         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2087         CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_PRINCETON_RESET);
2088
2089         sc->flags &= ~IWI_FLAG_FW_INITED;
2090 }
2091
2092 static int
2093 iwi_reset(struct iwi_softc *sc)
2094 {
2095         uint32_t tmp;
2096         int i, ntries;
2097
2098         iwi_stop_master(sc);
2099
2100         tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2101         CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2102
2103         CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST);
2104
2105         /* wait for clock stabilization */
2106         for (ntries = 0; ntries < 1000; ntries++) {
2107                 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY)
2108                         break;
2109                 DELAY(200);
2110         }
2111         if (ntries == 1000) {
2112                 device_printf(sc->sc_dev,
2113                     "timeout waiting for clock stabilization\n");
2114                 return EIO;
2115         }
2116
2117         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2118         CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_SOFT_RESET);
2119
2120         DELAY(10);
2121
2122         tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2123         CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2124
2125         /* clear NIC memory */
2126         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0);
2127         for (i = 0; i < 0xc000; i++)
2128                 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2129
2130         return 0;
2131 }
2132
2133 static const struct iwi_firmware_ohdr *
2134 iwi_setup_ofw(struct iwi_softc *sc, struct iwi_fw *fw)
2135 {
2136         const struct firmware *fp = fw->fp;
2137         const struct iwi_firmware_ohdr *hdr;
2138
2139         if (fp->datasize < sizeof (struct iwi_firmware_ohdr)) {
2140                 device_printf(sc->sc_dev, "image '%s' too small\n", fp->name);
2141                 return NULL;
2142         }
2143         hdr = (const struct iwi_firmware_ohdr *)fp->data;
2144         if ((IWI_FW_GET_MAJOR(le32toh(hdr->version)) != IWI_FW_REQ_MAJOR) ||
2145             (IWI_FW_GET_MINOR(le32toh(hdr->version)) != IWI_FW_REQ_MINOR)) {
2146                 device_printf(sc->sc_dev, "version for '%s' %d.%d != %d.%d\n",
2147                     fp->name, IWI_FW_GET_MAJOR(le32toh(hdr->version)),
2148                     IWI_FW_GET_MINOR(le32toh(hdr->version)), IWI_FW_REQ_MAJOR,
2149                     IWI_FW_REQ_MINOR);
2150                 return NULL;
2151         }
2152         fw->data = ((const char *) fp->data) + sizeof(struct iwi_firmware_ohdr);
2153         fw->size = fp->datasize - sizeof(struct iwi_firmware_ohdr);
2154         fw->name = fp->name;
2155         return hdr;
2156 }
2157
2158 static const struct iwi_firmware_ohdr *
2159 iwi_setup_oucode(struct iwi_softc *sc, struct iwi_fw *fw)
2160 {
2161         const struct iwi_firmware_ohdr *hdr;
2162
2163         hdr = iwi_setup_ofw(sc, fw);
2164         if (hdr != NULL && le32toh(hdr->mode) != IWI_FW_MODE_UCODE) {
2165                 device_printf(sc->sc_dev, "%s is not a ucode image\n",
2166                     fw->name);
2167                 hdr = NULL;
2168         }
2169         return hdr;
2170 }
2171
2172 static void
2173 iwi_getfw(struct iwi_fw *fw, const char *fwname,
2174           struct iwi_fw *uc, const char *ucname)
2175 {
2176         if (fw->fp == NULL)
2177                 fw->fp = firmware_get(fwname);
2178         /* NB: pre-3.0 ucode is packaged separately */
2179         if (uc->fp == NULL && fw->fp != NULL && fw->fp->version < 300)
2180                 uc->fp = firmware_get(ucname);
2181 }
2182
2183 /*
2184  * Get the required firmware images if not already loaded.
2185  * Note that we hold firmware images so long as the device
2186  * is marked up in case we need to reload them on device init.
2187  * This is necessary because we re-init the device sometimes
2188  * from a context where we cannot read from the filesystem
2189  * (e.g. from the taskqueue thread when rfkill is re-enabled).
2190  * XXX return 0 on success, 1 on error.
2191  *
2192  * NB: the order of get'ing and put'ing images here is
2193  * intentional to support handling firmware images bundled
2194  * by operating mode and/or all together in one file with
2195  * the boot firmware as "master".
2196  */
2197 static int
2198 iwi_get_firmware(struct iwi_softc *sc, enum ieee80211_opmode opmode)
2199 {
2200         const struct iwi_firmware_hdr *hdr;
2201         const struct firmware *fp;
2202
2203         /* invalidate cached firmware on mode change */
2204         if (sc->fw_mode != opmode)
2205                 iwi_put_firmware(sc);
2206
2207         switch (opmode) {
2208         case IEEE80211_M_STA:
2209                 iwi_getfw(&sc->fw_fw, "iwi_bss", &sc->fw_uc, "iwi_ucode_bss");
2210                 break;
2211         case IEEE80211_M_IBSS:
2212                 iwi_getfw(&sc->fw_fw, "iwi_ibss", &sc->fw_uc, "iwi_ucode_ibss");
2213                 break;
2214         case IEEE80211_M_MONITOR:
2215                 iwi_getfw(&sc->fw_fw, "iwi_monitor",
2216                           &sc->fw_uc, "iwi_ucode_monitor");
2217                 break;
2218         default:
2219                 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode);
2220                 return EINVAL;
2221         }
2222         fp = sc->fw_fw.fp;
2223         if (fp == NULL) {
2224                 device_printf(sc->sc_dev, "could not load firmware\n");
2225                 goto bad;
2226         }
2227         if (fp->version < 300) {
2228                 /*
2229                  * Firmware prior to 3.0 was packaged as separate
2230                  * boot, firmware, and ucode images.  Verify the
2231                  * ucode image was read in, retrieve the boot image
2232                  * if needed, and check version stamps for consistency.
2233                  * The version stamps in the data are also checked
2234                  * above; this is a bit paranoid but is a cheap
2235                  * safeguard against mis-packaging.
2236                  */
2237                 if (sc->fw_uc.fp == NULL) {
2238                         device_printf(sc->sc_dev, "could not load ucode\n");
2239                         goto bad;
2240                 }
2241                 if (sc->fw_boot.fp == NULL) {
2242                         sc->fw_boot.fp = firmware_get("iwi_boot");
2243                         if (sc->fw_boot.fp == NULL) {
2244                                 device_printf(sc->sc_dev,
2245                                         "could not load boot firmware\n");
2246                                 goto bad;
2247                         }
2248                 }
2249                 if (sc->fw_boot.fp->version != sc->fw_fw.fp->version ||
2250                     sc->fw_boot.fp->version != sc->fw_uc.fp->version) {
2251                         device_printf(sc->sc_dev,
2252                             "firmware version mismatch: "
2253                             "'%s' is %d, '%s' is %d, '%s' is %d\n",
2254                             sc->fw_boot.fp->name, sc->fw_boot.fp->version,
2255                             sc->fw_uc.fp->name, sc->fw_uc.fp->version,
2256                             sc->fw_fw.fp->name, sc->fw_fw.fp->version
2257                         );
2258                         goto bad;
2259                 }
2260                 /*
2261                  * Check and setup each image.
2262                  */
2263                 if (iwi_setup_oucode(sc, &sc->fw_uc) == NULL ||
2264                     iwi_setup_ofw(sc, &sc->fw_boot) == NULL ||
2265                     iwi_setup_ofw(sc, &sc->fw_fw) == NULL)
2266                         goto bad;
2267         } else {
2268                 /*
2269                  * Check and setup combined image.
2270                  */
2271                 if (fp->datasize < sizeof(struct iwi_firmware_hdr)) {
2272                         device_printf(sc->sc_dev, "image '%s' too small\n",
2273                             fp->name);
2274                         goto bad;
2275                 }
2276                 hdr = (const struct iwi_firmware_hdr *)fp->data;
2277                 if (fp->datasize < sizeof(*hdr) + le32toh(hdr->bsize) + le32toh(hdr->usize)
2278                                 + le32toh(hdr->fsize)) {
2279                         device_printf(sc->sc_dev, "image '%s' too small (2)\n",
2280                             fp->name);
2281                         goto bad;
2282                 }
2283                 sc->fw_boot.data = ((const char *) fp->data) + sizeof(*hdr);
2284                 sc->fw_boot.size = le32toh(hdr->bsize);
2285                 sc->fw_boot.name = fp->name;
2286                 sc->fw_uc.data = sc->fw_boot.data + sc->fw_boot.size;
2287                 sc->fw_uc.size = le32toh(hdr->usize);
2288                 sc->fw_uc.name = fp->name;
2289                 sc->fw_fw.data = sc->fw_uc.data + sc->fw_uc.size;
2290                 sc->fw_fw.size = le32toh(hdr->fsize);
2291                 sc->fw_fw.name = fp->name;
2292         }
2293 #if 0
2294         device_printf(sc->sc_dev, "boot %d ucode %d fw %d bytes\n",
2295                 sc->fw_boot.size, sc->fw_uc.size, sc->fw_fw.size);
2296 #endif
2297
2298         sc->fw_mode = opmode;
2299         return 0;
2300 bad:
2301         iwi_put_firmware(sc);
2302         return 1;
2303 }
2304
2305 static void
2306 iwi_put_fw(struct iwi_fw *fw)
2307 {
2308         if (fw->fp != NULL) {
2309                 firmware_put(fw->fp, FIRMWARE_UNLOAD);
2310                 fw->fp = NULL;
2311         }
2312         fw->data = NULL;
2313         fw->size = 0;
2314         fw->name = NULL;
2315 }
2316
2317 /*
2318  * Release any cached firmware images.
2319  */
2320 static void
2321 iwi_put_firmware(struct iwi_softc *sc)
2322 {
2323         iwi_put_fw(&sc->fw_uc);
2324         iwi_put_fw(&sc->fw_fw);
2325         iwi_put_fw(&sc->fw_boot);
2326 }
2327
2328 static int
2329 iwi_load_ucode(struct iwi_softc *sc, const struct iwi_fw *fw)
2330 {
2331         uint32_t tmp;
2332         const uint16_t *w;
2333         const char *uc = fw->data;
2334         size_t size = fw->size;
2335         int i, ntries, error;
2336
2337         IWI_LOCK_ASSERT(sc);
2338         error = 0;
2339         CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) |
2340             IWI_RST_STOP_MASTER);
2341         for (ntries = 0; ntries < 5; ntries++) {
2342                 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2343                         break;
2344                 DELAY(10);
2345         }
2346         if (ntries == 5) {
2347                 device_printf(sc->sc_dev, "timeout waiting for master\n");
2348                 error = EIO;
2349                 goto fail;
2350         }
2351
2352         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
2353         DELAY(5000);
2354
2355         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2356         tmp &= ~IWI_RST_PRINCETON_RESET;
2357         CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2358
2359         DELAY(5000);
2360         MEM_WRITE_4(sc, 0x3000e0, 0);
2361         DELAY(1000);
2362         MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 1);
2363         DELAY(1000);
2364         MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 0);
2365         DELAY(1000);
2366         MEM_WRITE_1(sc, 0x200000, 0x00);
2367         MEM_WRITE_1(sc, 0x200000, 0x40);
2368         DELAY(1000);
2369
2370         /* write microcode into adapter memory */
2371         for (w = (const uint16_t *)uc; size > 0; w++, size -= 2)
2372                 MEM_WRITE_2(sc, 0x200010, htole16(*w));
2373
2374         MEM_WRITE_1(sc, 0x200000, 0x00);
2375         MEM_WRITE_1(sc, 0x200000, 0x80);
2376
2377         /* wait until we get an answer */
2378         for (ntries = 0; ntries < 100; ntries++) {
2379                 if (MEM_READ_1(sc, 0x200000) & 1)
2380                         break;
2381                 DELAY(100);
2382         }
2383         if (ntries == 100) {
2384                 device_printf(sc->sc_dev,
2385                     "timeout waiting for ucode to initialize\n");
2386                 error = EIO;
2387                 goto fail;
2388         }
2389
2390         /* read the answer or the firmware will not initialize properly */
2391         for (i = 0; i < 7; i++)
2392                 MEM_READ_4(sc, 0x200004);
2393
2394         MEM_WRITE_1(sc, 0x200000, 0x00);
2395
2396 fail:
2397         return error;
2398 }
2399
2400 /* macro to handle unaligned little endian data in firmware image */
2401 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2402
2403 static int
2404 iwi_load_firmware(struct iwi_softc *sc, const struct iwi_fw *fw)
2405 {
2406         u_char *p, *end;
2407         uint32_t sentinel, ctl, src, dst, sum, len, mlen, tmp;
2408         int ntries, error;
2409
2410         IWI_LOCK_ASSERT(sc);
2411
2412         /* copy firmware image to DMA memory */
2413         memcpy(sc->fw_virtaddr, fw->data, fw->size);
2414
2415         /* make sure the adapter will get up-to-date values */
2416         bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_PREWRITE);
2417
2418         /* tell the adapter where the command blocks are stored */
2419         MEM_WRITE_4(sc, 0x3000a0, 0x27000);
2420
2421         /*
2422          * Store command blocks into adapter's internal memory using register
2423          * indirections. The adapter will read the firmware image through DMA
2424          * using information stored in command blocks.
2425          */
2426         src = sc->fw_physaddr;
2427         p = sc->fw_virtaddr;
2428         end = p + fw->size;
2429         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000);
2430
2431         while (p < end) {
2432                 dst = GETLE32(p); p += 4; src += 4;
2433                 len = GETLE32(p); p += 4; src += 4;
2434                 p += len;
2435
2436                 while (len > 0) {
2437                         mlen = min(len, IWI_CB_MAXDATALEN);
2438
2439                         ctl = IWI_CB_DEFAULT_CTL | mlen;
2440                         sum = ctl ^ src ^ dst;
2441
2442                         /* write a command block */
2443                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl);
2444                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src);
2445                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst);
2446                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum);
2447
2448                         src += mlen;
2449                         dst += mlen;
2450                         len -= mlen;
2451                 }
2452         }
2453
2454         /* write a fictive final command block (sentinel) */
2455         sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR);
2456         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2457
2458         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2459         tmp &= ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER);
2460         CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2461
2462         /* tell the adapter to start processing command blocks */
2463         MEM_WRITE_4(sc, 0x3000a4, 0x540100);
2464
2465         /* wait until the adapter reaches the sentinel */
2466         for (ntries = 0; ntries < 400; ntries++) {
2467                 if (MEM_READ_4(sc, 0x3000d0) >= sentinel)
2468                         break;
2469                 DELAY(100);
2470         }
2471         /* sync dma, just in case */
2472         bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_POSTWRITE);
2473         if (ntries == 400) {
2474                 device_printf(sc->sc_dev,
2475                     "timeout processing command blocks for %s firmware\n",
2476                     fw->name);
2477                 return EIO;
2478         }
2479
2480         /* we're done with command blocks processing */
2481         MEM_WRITE_4(sc, 0x3000a4, 0x540c00);
2482
2483         /* allow interrupts so we know when the firmware is ready */
2484         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK);
2485
2486         /* tell the adapter to initialize the firmware */
2487         CSR_WRITE_4(sc, IWI_CSR_RST, 0);
2488
2489         tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2490         CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_ALLOW_STANDBY);
2491
2492         /* wait at most one second for firmware initialization to complete */
2493         if ((error = msleep(sc, &sc->sc_mtx, 0, "iwiinit", hz)) != 0) {
2494                 device_printf(sc->sc_dev, "timeout waiting for %s firmware "
2495                     "initialization to complete\n", fw->name);
2496         }
2497
2498         return error;
2499 }
2500
2501 static int
2502 iwi_setpowermode(struct iwi_softc *sc, struct ieee80211vap *vap)
2503 {
2504         uint32_t data;
2505
2506         if (vap->iv_flags & IEEE80211_F_PMGTON) {
2507                 /* XXX set more fine-grained operation */
2508                 data = htole32(IWI_POWER_MODE_MAX);
2509         } else
2510                 data = htole32(IWI_POWER_MODE_CAM);
2511
2512         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2513         return iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data);
2514 }
2515
2516 static int
2517 iwi_setwepkeys(struct iwi_softc *sc, struct ieee80211vap *vap)
2518 {
2519         struct iwi_wep_key wepkey;
2520         struct ieee80211_key *wk;
2521         int error, i;
2522
2523         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2524                 wk = &vap->iv_nw_keys[i];
2525
2526                 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY;
2527                 wepkey.idx = i;
2528                 wepkey.len = wk->wk_keylen;
2529                 memset(wepkey.key, 0, sizeof wepkey.key);
2530                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2531                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2532                     wepkey.len));
2533                 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey,
2534                     sizeof wepkey);
2535                 if (error != 0)
2536                         return error;
2537         }
2538         return 0;
2539 }
2540
2541 static int
2542 iwi_config(struct iwi_softc *sc)
2543 {
2544         struct ieee80211com *ic = &sc->sc_ic;
2545         struct iwi_configuration config;
2546         struct iwi_rateset rs;
2547         struct iwi_txpower power;
2548         uint32_t data;
2549         int error, i;
2550
2551         IWI_LOCK_ASSERT(sc);
2552
2553         DPRINTF(("Setting MAC address to %6D\n", ic->ic_macaddr, ":"));
2554         error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, ic->ic_macaddr,
2555             IEEE80211_ADDR_LEN);
2556         if (error != 0)
2557                 return error;
2558
2559         memset(&config, 0, sizeof config);
2560         config.bluetooth_coexistence = sc->bluetooth;
2561         config.silence_threshold = 0x1e;
2562         config.antenna = sc->antenna;
2563         config.multicast_enabled = 1;
2564         config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2565         config.disable_unicast_decryption = 1;
2566         config.disable_multicast_decryption = 1;
2567         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2568                 config.allow_invalid_frames = 1;
2569                 config.allow_beacon_and_probe_resp = 1;
2570                 config.allow_mgt = 1;
2571         }
2572         DPRINTF(("Configuring adapter\n"));
2573         error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2574         if (error != 0)
2575                 return error;
2576         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2577                 power.mode = IWI_MODE_11B;
2578                 power.nchan = 11;
2579                 for (i = 0; i < 11; i++) {
2580                         power.chan[i].chan = i + 1;
2581                         power.chan[i].power = IWI_TXPOWER_MAX;
2582                 }
2583                 DPRINTF(("Setting .11b channels tx power\n"));
2584                 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2585                 if (error != 0)
2586                         return error;
2587
2588                 power.mode = IWI_MODE_11G;
2589                 DPRINTF(("Setting .11g channels tx power\n"));
2590                 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2591                 if (error != 0)
2592                         return error;
2593         }
2594
2595         memset(&rs, 0, sizeof rs);
2596         rs.mode = IWI_MODE_11G;
2597         rs.type = IWI_RATESET_TYPE_SUPPORTED;
2598         rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates;
2599         memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates,
2600             rs.nrates);
2601         DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates));
2602         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2603         if (error != 0)
2604                 return error;
2605
2606         memset(&rs, 0, sizeof rs);
2607         rs.mode = IWI_MODE_11A;
2608         rs.type = IWI_RATESET_TYPE_SUPPORTED;
2609         rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates;
2610         memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates,
2611             rs.nrates);
2612         DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates));
2613         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2614         if (error != 0)
2615                 return error;
2616
2617         data = htole32(arc4random());
2618         DPRINTF(("Setting initialization vector to %u\n", le32toh(data)));
2619         error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data);
2620         if (error != 0)
2621                 return error;
2622
2623         /* enable adapter */
2624         DPRINTF(("Enabling adapter\n"));
2625         return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0);
2626 }
2627
2628 static __inline void
2629 set_scan_type(struct iwi_scan_ext *scan, int ix, int scan_type)
2630 {
2631         uint8_t *st = &scan->scan_type[ix / 2];
2632         if (ix % 2)
2633                 *st = (*st & 0xf0) | ((scan_type & 0xf) << 0);
2634         else
2635                 *st = (*st & 0x0f) | ((scan_type & 0xf) << 4);
2636 }
2637
2638 static int
2639 scan_type(const struct ieee80211_scan_state *ss,
2640         const struct ieee80211_channel *chan)
2641 {
2642         /* We can only set one essid for a directed scan */
2643         if (ss->ss_nssid != 0)
2644                 return IWI_SCAN_TYPE_BDIRECTED;
2645         if ((ss->ss_flags & IEEE80211_SCAN_ACTIVE) &&
2646             (chan->ic_flags & IEEE80211_CHAN_PASSIVE) == 0)
2647                 return IWI_SCAN_TYPE_BROADCAST;
2648         return IWI_SCAN_TYPE_PASSIVE;
2649 }
2650
2651 static __inline int
2652 scan_band(const struct ieee80211_channel *c)
2653 {
2654         return IEEE80211_IS_CHAN_5GHZ(c) ?  IWI_CHAN_5GHZ : IWI_CHAN_2GHZ;
2655 }
2656
2657 static void
2658 iwi_monitor_scan(void *arg, int npending)
2659 {
2660         struct iwi_softc *sc = arg;
2661         IWI_LOCK_DECL;
2662
2663         IWI_LOCK(sc);
2664         (void) iwi_scanchan(sc, 2000, 0);
2665         IWI_UNLOCK(sc);
2666 }
2667
2668 /*
2669  * Start a scan on the current channel or all channels.
2670  */
2671 static int
2672 iwi_scanchan(struct iwi_softc *sc, unsigned long maxdwell, int allchan)
2673 {
2674         struct ieee80211com *ic = &sc->sc_ic;
2675         struct ieee80211_channel *chan;
2676         struct ieee80211_scan_state *ss;
2677         struct iwi_scan_ext scan;
2678         int error = 0;
2679
2680         IWI_LOCK_ASSERT(sc);
2681         if (sc->fw_state == IWI_FW_SCANNING) {
2682                 /*
2683                  * This should not happen as we only trigger scan_next after
2684                  * completion
2685                  */
2686                 DPRINTF(("%s: called too early - still scanning\n", __func__));
2687                 return (EBUSY);
2688         }
2689         IWI_STATE_BEGIN(sc, IWI_FW_SCANNING);
2690
2691         ss = ic->ic_scan;
2692
2693         memset(&scan, 0, sizeof scan);
2694         scan.full_scan_index = htole32(++sc->sc_scangen);
2695         scan.dwell_time[IWI_SCAN_TYPE_PASSIVE] = htole16(maxdwell);
2696         if (ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) {
2697                 /*
2698                  * Use very short dwell times for when we send probe request
2699                  * frames.  Without this bg scans hang.  Ideally this should
2700                  * be handled with early-termination as done by net80211 but
2701                  * that's not feasible (aborting a scan is problematic).
2702                  */
2703                 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(30);
2704                 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(30);
2705         } else {
2706                 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(maxdwell);
2707                 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(maxdwell);
2708         }
2709
2710         /* We can only set one essid for a directed scan */
2711         if (ss->ss_nssid != 0) {
2712                 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ss->ss_ssid[0].ssid,
2713                     ss->ss_ssid[0].len);
2714                 if (error)
2715                         return (error);
2716         }
2717
2718         if (allchan) {
2719                 int i, next, band, b, bstart;
2720                 /*
2721                  * Convert scan list to run-length encoded channel list
2722                  * the firmware requires (preserving the order setup by
2723                  * net80211).  The first entry in each run specifies the
2724                  * band and the count of items in the run.
2725                  */
2726                 next = 0;               /* next open slot */
2727                 bstart = 0;             /* NB: not needed, silence compiler */
2728                 band = -1;              /* NB: impossible value */
2729                 KASSERT(ss->ss_last > 0, ("no channels"));
2730                 for (i = 0; i < ss->ss_last; i++) {
2731                         chan = ss->ss_chans[i];
2732                         b = scan_band(chan);
2733                         if (b != band) {
2734                                 if (band != -1)
2735                                         scan.channels[bstart] =
2736                                             (next - bstart) | band;
2737                                 /* NB: this allocates a slot for the run-len */
2738                                 band = b, bstart = next++;
2739                         }
2740                         if (next >= IWI_SCAN_CHANNELS) {
2741                                 DPRINTF(("truncating scan list\n"));
2742                                 break;
2743                         }
2744                         scan.channels[next] = ieee80211_chan2ieee(ic, chan);
2745                         set_scan_type(&scan, next, scan_type(ss, chan));
2746                         next++;
2747                 }
2748                 scan.channels[bstart] = (next - bstart) | band;
2749         } else {
2750                 /* Scan the current channel only */
2751                 chan = ic->ic_curchan;
2752                 scan.channels[0] = 1 | scan_band(chan);
2753                 scan.channels[1] = ieee80211_chan2ieee(ic, chan);
2754                 set_scan_type(&scan, 1, scan_type(ss, chan));
2755         }
2756 #ifdef IWI_DEBUG
2757         if (iwi_debug > 0) {
2758                 static const char *scantype[8] =
2759                    { "PSTOP", "PASV", "DIR", "BCAST", "BDIR", "5", "6", "7" };
2760                 int i;
2761                 printf("Scan request: index %u dwell %d/%d/%d\n"
2762                     , le32toh(scan.full_scan_index)
2763                     , le16toh(scan.dwell_time[IWI_SCAN_TYPE_PASSIVE])
2764                     , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BROADCAST])
2765                     , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED])
2766                 );
2767                 i = 0;
2768                 do {
2769                         int run = scan.channels[i];
2770                         if (run == 0)
2771                                 break;
2772                         printf("Scan %d %s channels:", run & 0x3f,
2773                             run & IWI_CHAN_2GHZ ? "2.4GHz" : "5GHz");
2774                         for (run &= 0x3f, i++; run > 0; run--, i++) {
2775                                 uint8_t type = scan.scan_type[i/2];
2776                                 printf(" %u/%s", scan.channels[i],
2777                                     scantype[(i & 1 ? type : type>>4) & 7]);
2778                         }
2779                         printf("\n");
2780                 } while (i < IWI_SCAN_CHANNELS);
2781         }
2782 #endif
2783
2784         return (iwi_cmd(sc, IWI_CMD_SCAN_EXT, &scan, sizeof scan));
2785 }
2786
2787 static int
2788 iwi_set_sensitivity(struct iwi_softc *sc, int8_t rssi_dbm)
2789 {
2790         struct iwi_sensitivity sens;
2791
2792         DPRINTF(("Setting sensitivity to %d\n", rssi_dbm));
2793
2794         memset(&sens, 0, sizeof sens);
2795         sens.rssi = htole16(rssi_dbm);
2796         return iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &sens, sizeof sens);
2797 }
2798
2799 static int
2800 iwi_auth_and_assoc(struct iwi_softc *sc, struct ieee80211vap *vap)
2801 {
2802         struct ieee80211com *ic = vap->iv_ic;
2803         struct ifnet *ifp = vap->iv_ifp;
2804         struct ieee80211_node *ni;
2805         struct iwi_configuration config;
2806         struct iwi_associate *assoc = &sc->assoc;
2807         struct iwi_rateset rs;
2808         uint16_t capinfo;
2809         uint32_t data;
2810         int error, mode;
2811
2812         IWI_LOCK_ASSERT(sc);
2813
2814         ni = ieee80211_ref_node(vap->iv_bss);
2815
2816         if (sc->flags & IWI_FLAG_ASSOCIATED) {
2817                 DPRINTF(("Already associated\n"));
2818                 return (-1);
2819         }
2820
2821         IWI_STATE_BEGIN(sc, IWI_FW_ASSOCIATING);
2822         error = 0;
2823         mode = 0;
2824
2825         if (IEEE80211_IS_CHAN_A(ic->ic_curchan))
2826                 mode = IWI_MODE_11A;
2827         else if (IEEE80211_IS_CHAN_G(ic->ic_curchan))
2828                 mode = IWI_MODE_11G;
2829         if (IEEE80211_IS_CHAN_B(ic->ic_curchan))
2830                 mode = IWI_MODE_11B;
2831
2832         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2833                 memset(&config, 0, sizeof config);
2834                 config.bluetooth_coexistence = sc->bluetooth;
2835                 config.antenna = sc->antenna;
2836                 config.multicast_enabled = 1;
2837                 if (mode == IWI_MODE_11G)
2838                         config.use_protection = 1;
2839                 config.answer_pbreq =
2840                     (vap->iv_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2841                 config.disable_unicast_decryption = 1;
2842                 config.disable_multicast_decryption = 1;
2843                 DPRINTF(("Configuring adapter\n"));
2844                 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2845                 if (error != 0)
2846                         goto done;
2847         }
2848
2849 #ifdef IWI_DEBUG
2850         if (iwi_debug > 0) {
2851                 printf("Setting ESSID to ");
2852                 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
2853                 printf("\n");
2854         }
2855 #endif
2856         error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen);
2857         if (error != 0)
2858                 goto done;
2859
2860         error = iwi_setpowermode(sc, vap);
2861         if (error != 0)
2862                 goto done;
2863
2864         data = htole32(vap->iv_rtsthreshold);
2865         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2866         error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2867         if (error != 0)
2868                 goto done;
2869
2870         data = htole32(vap->iv_fragthreshold);
2871         DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data)));
2872         error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2873         if (error != 0)
2874                 goto done;
2875
2876         /* the rate set has already been "negotiated" */
2877         memset(&rs, 0, sizeof rs);
2878         rs.mode = mode;
2879         rs.type = IWI_RATESET_TYPE_NEGOTIATED;
2880         rs.nrates = ni->ni_rates.rs_nrates;
2881         if (rs.nrates > IWI_RATESET_SIZE) {
2882                 DPRINTF(("Truncating negotiated rate set from %u\n",
2883                     rs.nrates));
2884                 rs.nrates = IWI_RATESET_SIZE;
2885         }
2886         memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates);
2887         DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates));
2888         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2889         if (error != 0)
2890                 goto done;
2891
2892         memset(assoc, 0, sizeof *assoc);
2893
2894         if ((vap->iv_flags & IEEE80211_F_WME) && ni->ni_ies.wme_ie != NULL) {
2895                 /* NB: don't treat WME setup as failure */
2896                 if (iwi_wme_setparams(sc) == 0 && iwi_wme_setie(sc) == 0)
2897                         assoc->policy |= htole16(IWI_POLICY_WME);
2898                 /* XXX complain on failure? */
2899         }
2900
2901         if (vap->iv_appie_wpa != NULL) {
2902                 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2903
2904                 DPRINTF(("Setting optional IE (len=%u)\n", ie->ie_len));
2905                 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ie->ie_data, ie->ie_len);
2906                 if (error != 0)
2907                         goto done;
2908         }
2909
2910         error = iwi_set_sensitivity(sc, ic->ic_node_getrssi(ni));
2911         if (error != 0)
2912                 goto done;
2913
2914         assoc->mode = mode;
2915         assoc->chan = ic->ic_curchan->ic_ieee;
2916         /*
2917          * NB: do not arrange for shared key auth w/o privacy
2918          *     (i.e. a wep key); it causes a firmware error.
2919          */
2920         if ((vap->iv_flags & IEEE80211_F_PRIVACY) &&
2921             ni->ni_authmode == IEEE80211_AUTH_SHARED) {
2922                 assoc->auth = IWI_AUTH_SHARED;
2923                 /*
2924                  * It's possible to have privacy marked but no default
2925                  * key setup.  This typically is due to a user app bug
2926                  * but if we blindly grab the key the firmware will
2927                  * barf so avoid it for now.
2928                  */
2929                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE)
2930                         assoc->auth |= vap->iv_def_txkey << 4;
2931
2932                 error = iwi_setwepkeys(sc, vap);
2933                 if (error != 0)
2934                         goto done;
2935         }
2936         if (vap->iv_flags & IEEE80211_F_WPA)
2937                 assoc->policy |= htole16(IWI_POLICY_WPA);
2938         if (vap->iv_opmode == IEEE80211_M_IBSS && ni->ni_tstamp.tsf == 0)
2939                 assoc->type = IWI_HC_IBSS_START;
2940         else
2941                 assoc->type = IWI_HC_ASSOC;
2942         memcpy(assoc->tstamp, ni->ni_tstamp.data, 8);
2943
2944         if (vap->iv_opmode == IEEE80211_M_IBSS)
2945                 capinfo = IEEE80211_CAPINFO_IBSS;
2946         else
2947                 capinfo = IEEE80211_CAPINFO_ESS;
2948         if (vap->iv_flags & IEEE80211_F_PRIVACY)
2949                 capinfo |= IEEE80211_CAPINFO_PRIVACY;
2950         if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
2951             IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
2952                 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
2953         if (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)
2954                 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME;
2955         assoc->capinfo = htole16(capinfo);
2956
2957         assoc->lintval = htole16(ic->ic_lintval);
2958         assoc->intval = htole16(ni->ni_intval);
2959         IEEE80211_ADDR_COPY(assoc->bssid, ni->ni_bssid);
2960         if (vap->iv_opmode == IEEE80211_M_IBSS)
2961                 IEEE80211_ADDR_COPY(assoc->dst, ifp->if_broadcastaddr);
2962         else
2963                 IEEE80211_ADDR_COPY(assoc->dst, ni->ni_bssid);
2964
2965         DPRINTF(("%s bssid %6D dst %6D channel %u policy 0x%x "
2966             "auth %u capinfo 0x%x lintval %u bintval %u\n",
2967             assoc->type == IWI_HC_IBSS_START ? "Start" : "Join",
2968             assoc->bssid, ":", assoc->dst, ":",
2969             assoc->chan, le16toh(assoc->policy), assoc->auth,
2970             le16toh(assoc->capinfo), le16toh(assoc->lintval),
2971             le16toh(assoc->intval)));
2972         error = iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
2973 done:
2974         ieee80211_free_node(ni);
2975         if (error)
2976                 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
2977
2978         return (error);
2979 }
2980
2981 static void
2982 iwi_disassoc(void *arg, int pending)
2983 {
2984         struct iwi_softc *sc = arg;
2985         IWI_LOCK_DECL;
2986
2987         IWI_LOCK(sc);
2988         iwi_disassociate(sc, 0);
2989         IWI_UNLOCK(sc);
2990 }
2991
2992 static int
2993 iwi_disassociate(struct iwi_softc *sc, int quiet)
2994 {
2995         struct iwi_associate *assoc = &sc->assoc;
2996
2997         if ((sc->flags & IWI_FLAG_ASSOCIATED) == 0) {
2998                 DPRINTF(("Not associated\n"));
2999                 return (-1);
3000         }
3001
3002         IWI_STATE_BEGIN(sc, IWI_FW_DISASSOCIATING);
3003
3004         if (quiet)
3005                 assoc->type = IWI_HC_DISASSOC_QUIET;
3006         else
3007                 assoc->type = IWI_HC_DISASSOC;
3008
3009         DPRINTF(("Trying to disassociate from %6D channel %u\n",
3010             assoc->bssid, ":", assoc->chan));
3011         return iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
3012 }
3013
3014 /*
3015  * release dma resources for the firmware
3016  */
3017 static void
3018 iwi_release_fw_dma(struct iwi_softc *sc)
3019 {
3020         if (sc->fw_flags & IWI_FW_HAVE_PHY)
3021                 bus_dmamap_unload(sc->fw_dmat, sc->fw_map);
3022         if (sc->fw_flags & IWI_FW_HAVE_MAP)
3023                 bus_dmamem_free(sc->fw_dmat, sc->fw_virtaddr, sc->fw_map);
3024         if (sc->fw_flags & IWI_FW_HAVE_DMAT)
3025                 bus_dma_tag_destroy(sc->fw_dmat);
3026
3027         sc->fw_flags = 0;
3028         sc->fw_dma_size = 0;
3029         sc->fw_dmat = NULL;
3030         sc->fw_map = NULL;
3031         sc->fw_physaddr = 0;
3032         sc->fw_virtaddr = NULL;
3033 }
3034
3035 /*
3036  * allocate the dma descriptor for the firmware.
3037  * Return 0 on success, 1 on error.
3038  * Must be called unlocked, protected by IWI_FLAG_FW_LOADING.
3039  */
3040 static int
3041 iwi_init_fw_dma(struct iwi_softc *sc, int size)
3042 {
3043         if (sc->fw_dma_size >= size)
3044                 return 0;
3045         if (bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
3046             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
3047             size, 1, size, 0, NULL, NULL, &sc->fw_dmat) != 0) {
3048                 device_printf(sc->sc_dev,
3049                     "could not create firmware DMA tag\n");
3050                 goto error;
3051         }
3052         sc->fw_flags |= IWI_FW_HAVE_DMAT;
3053         if (bus_dmamem_alloc(sc->fw_dmat, &sc->fw_virtaddr, 0,
3054             &sc->fw_map) != 0) {
3055                 device_printf(sc->sc_dev,
3056                     "could not allocate firmware DMA memory\n");
3057                 goto error;
3058         }
3059         sc->fw_flags |= IWI_FW_HAVE_MAP;
3060         if (bus_dmamap_load(sc->fw_dmat, sc->fw_map, sc->fw_virtaddr,
3061             size, iwi_dma_map_addr, &sc->fw_physaddr, 0) != 0) {
3062                 device_printf(sc->sc_dev, "could not load firmware DMA map\n");
3063                 goto error;
3064         }
3065         sc->fw_flags |= IWI_FW_HAVE_PHY;
3066         sc->fw_dma_size = size;
3067         return 0;
3068
3069 error:
3070         iwi_release_fw_dma(sc);
3071         return 1;
3072 }
3073
3074 static void
3075 iwi_init_locked(struct iwi_softc *sc)
3076 {
3077         struct iwi_rx_data *data;
3078         int i;
3079
3080         IWI_LOCK_ASSERT(sc);
3081
3082         if (sc->fw_state == IWI_FW_LOADING) {
3083                 device_printf(sc->sc_dev, "%s: already loading\n", __func__);
3084                 return;         /* XXX: condvar? */
3085         }
3086
3087         iwi_stop_locked(sc);
3088
3089         IWI_STATE_BEGIN(sc, IWI_FW_LOADING);
3090
3091         if (iwi_reset(sc) != 0) {
3092                 device_printf(sc->sc_dev, "could not reset adapter\n");
3093                 goto fail;
3094         }
3095         if (iwi_load_firmware(sc, &sc->fw_boot) != 0) {
3096                 device_printf(sc->sc_dev,
3097                     "could not load boot firmware %s\n", sc->fw_boot.name);
3098                 goto fail;
3099         }
3100         if (iwi_load_ucode(sc, &sc->fw_uc) != 0) {
3101                 device_printf(sc->sc_dev,
3102                     "could not load microcode %s\n", sc->fw_uc.name);
3103                 goto fail;
3104         }
3105
3106         iwi_stop_master(sc);
3107
3108         CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.physaddr);
3109         CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count);
3110         CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
3111
3112         CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq[0].physaddr);
3113         CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq[0].count);
3114         CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq[0].cur);
3115
3116         CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq[1].physaddr);
3117         CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq[1].count);
3118         CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq[1].cur);
3119
3120         CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq[2].physaddr);
3121         CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq[2].count);
3122         CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq[2].cur);
3123
3124         CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq[3].physaddr);
3125         CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq[3].count);
3126         CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq[3].cur);
3127
3128         for (i = 0; i < sc->rxq.count; i++) {
3129                 data = &sc->rxq.data[i];
3130                 CSR_WRITE_4(sc, data->reg, data->physaddr);
3131         }
3132
3133         CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count - 1);
3134
3135         if (iwi_load_firmware(sc, &sc->fw_fw) != 0) {
3136                 device_printf(sc->sc_dev,
3137                     "could not load main firmware %s\n", sc->fw_fw.name);
3138                 goto fail;
3139         }
3140         sc->flags |= IWI_FLAG_FW_INITED;
3141
3142         IWI_STATE_END(sc, IWI_FW_LOADING);
3143
3144         if (iwi_config(sc) != 0) {
3145                 device_printf(sc->sc_dev, "unable to enable adapter\n");
3146                 goto fail2;
3147         }
3148
3149         callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
3150         sc->sc_running = 1;
3151         return;
3152 fail:
3153         IWI_STATE_END(sc, IWI_FW_LOADING);
3154 fail2:
3155         iwi_stop_locked(sc);
3156 }
3157
3158 static void
3159 iwi_init(void *priv)
3160 {
3161         struct iwi_softc *sc = priv;
3162         struct ieee80211com *ic = &sc->sc_ic;
3163         IWI_LOCK_DECL;
3164
3165         IWI_LOCK(sc);
3166         iwi_init_locked(sc);
3167         IWI_UNLOCK(sc);
3168
3169         if (sc->sc_running)
3170                 ieee80211_start_all(ic);
3171 }
3172
3173 static void
3174 iwi_stop_locked(void *priv)
3175 {
3176         struct iwi_softc *sc = priv;
3177
3178         IWI_LOCK_ASSERT(sc);
3179
3180         sc->sc_running = 0;
3181
3182         if (sc->sc_softled) {
3183                 callout_stop(&sc->sc_ledtimer);
3184                 sc->sc_blinking = 0;
3185         }
3186         callout_stop(&sc->sc_wdtimer);
3187         callout_stop(&sc->sc_rftimer);
3188
3189         iwi_stop_master(sc);
3190
3191         CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SOFT_RESET);
3192
3193         /* reset rings */
3194         iwi_reset_cmd_ring(sc, &sc->cmdq);
3195         iwi_reset_tx_ring(sc, &sc->txq[0]);
3196         iwi_reset_tx_ring(sc, &sc->txq[1]);
3197         iwi_reset_tx_ring(sc, &sc->txq[2]);
3198         iwi_reset_tx_ring(sc, &sc->txq[3]);
3199         iwi_reset_rx_ring(sc, &sc->rxq);
3200
3201         sc->sc_tx_timer = 0;
3202         sc->sc_state_timer = 0;
3203         sc->sc_busy_timer = 0;
3204         sc->flags &= ~(IWI_FLAG_BUSY | IWI_FLAG_ASSOCIATED);
3205         sc->fw_state = IWI_FW_IDLE;
3206         wakeup(sc);
3207 }
3208
3209 static void
3210 iwi_stop(struct iwi_softc *sc)
3211 {
3212         IWI_LOCK_DECL;
3213
3214         IWI_LOCK(sc);
3215         iwi_stop_locked(sc);
3216         IWI_UNLOCK(sc);
3217 }
3218
3219 static void
3220 iwi_restart(void *arg, int npending)
3221 {
3222         struct iwi_softc *sc = arg;
3223
3224         iwi_init(sc);
3225 }
3226
3227 /*
3228  * Return whether or not the radio is enabled in hardware
3229  * (i.e. the rfkill switch is "off").
3230  */
3231 static int
3232 iwi_getrfkill(struct iwi_softc *sc)
3233 {
3234         return (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) == 0;
3235 }
3236
3237 static void
3238 iwi_radio_on(void *arg, int pending)
3239 {
3240         struct iwi_softc *sc = arg;
3241         struct ieee80211com *ic = &sc->sc_ic;
3242
3243         device_printf(sc->sc_dev, "radio turned on\n");
3244
3245         iwi_init(sc);
3246         ieee80211_notify_radio(ic, 1);
3247 }
3248
3249 static void
3250 iwi_rfkill_poll(void *arg)
3251 {
3252         struct iwi_softc *sc = arg;
3253
3254         IWI_LOCK_ASSERT(sc);
3255
3256         /*
3257          * Check for a change in rfkill state.  We get an
3258          * interrupt when a radio is disabled but not when
3259          * it is enabled so we must poll for the latter.
3260          */
3261         if (!iwi_getrfkill(sc)) {
3262                 ieee80211_runtask(&sc->sc_ic, &sc->sc_radiontask);
3263                 return;
3264         }
3265         callout_reset(&sc->sc_rftimer, 2*hz, iwi_rfkill_poll, sc);
3266 }
3267
3268 static void
3269 iwi_radio_off(void *arg, int pending)
3270 {
3271         struct iwi_softc *sc = arg;
3272         struct ieee80211com *ic = &sc->sc_ic;
3273         IWI_LOCK_DECL;
3274
3275         device_printf(sc->sc_dev, "radio turned off\n");
3276
3277         ieee80211_notify_radio(ic, 0);
3278
3279         IWI_LOCK(sc);
3280         iwi_stop_locked(sc);
3281         iwi_rfkill_poll(sc);
3282         IWI_UNLOCK(sc);
3283 }
3284
3285 static int
3286 iwi_sysctl_stats(SYSCTL_HANDLER_ARGS)
3287 {
3288         struct iwi_softc *sc = arg1;
3289         uint32_t size, buf[128];
3290
3291         memset(buf, 0, sizeof buf);
3292
3293         if (!(sc->flags & IWI_FLAG_FW_INITED))
3294                 return SYSCTL_OUT(req, buf, sizeof buf);
3295
3296         size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1);
3297         CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size);
3298
3299         return SYSCTL_OUT(req, buf, size);
3300 }
3301
3302 static int
3303 iwi_sysctl_radio(SYSCTL_HANDLER_ARGS)
3304 {
3305         struct iwi_softc *sc = arg1;
3306         int val = !iwi_getrfkill(sc);
3307
3308         return SYSCTL_OUT(req, &val, sizeof val);
3309 }
3310
3311 /*
3312  * Add sysctl knobs.
3313  */
3314 static void
3315 iwi_sysctlattach(struct iwi_softc *sc)
3316 {
3317         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
3318         struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
3319
3320         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "radio",
3321             CTLTYPE_INT | CTLFLAG_RD, sc, 0, iwi_sysctl_radio, "I",
3322             "radio transmitter switch state (0=off, 1=on)");
3323
3324         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "stats",
3325             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, iwi_sysctl_stats, "S",
3326             "statistics");
3327
3328         sc->bluetooth = 0;
3329         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "bluetooth",
3330             CTLFLAG_RW, &sc->bluetooth, 0, "bluetooth coexistence");
3331
3332         sc->antenna = IWI_ANTENNA_AUTO;
3333         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "antenna",
3334             CTLFLAG_RW, &sc->antenna, 0, "antenna (0=auto)");
3335 }
3336
3337 /*
3338  * LED support.
3339  *
3340  * Different cards have different capabilities.  Some have three
3341  * led's while others have only one.  The linux ipw driver defines
3342  * led's for link state (associated or not), band (11a, 11g, 11b),
3343  * and for link activity.  We use one led and vary the blink rate
3344  * according to the tx/rx traffic a la the ath driver.
3345  */
3346
3347 static __inline uint32_t
3348 iwi_toggle_event(uint32_t r)
3349 {
3350         return r &~ (IWI_RST_STANDBY | IWI_RST_GATE_ODMA |
3351                      IWI_RST_GATE_IDMA | IWI_RST_GATE_ADMA);
3352 }
3353
3354 static uint32_t
3355 iwi_read_event(struct iwi_softc *sc)
3356 {
3357         return MEM_READ_4(sc, IWI_MEM_EEPROM_EVENT);
3358 }
3359
3360 static void
3361 iwi_write_event(struct iwi_softc *sc, uint32_t v)
3362 {
3363         MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, v);
3364 }
3365
3366 static void
3367 iwi_led_done(void *arg)
3368 {
3369         struct iwi_softc *sc = arg;
3370
3371         sc->sc_blinking = 0;
3372 }
3373
3374 /*
3375  * Turn the activity LED off: flip the pin and then set a timer so no
3376  * update will happen for the specified duration.
3377  */
3378 static void
3379 iwi_led_off(void *arg)
3380 {
3381         struct iwi_softc *sc = arg;
3382         uint32_t v;
3383
3384         v = iwi_read_event(sc);
3385         v &= ~sc->sc_ledpin;
3386         iwi_write_event(sc, iwi_toggle_event(v));
3387         callout_reset(&sc->sc_ledtimer, sc->sc_ledoff, iwi_led_done, sc);
3388 }
3389
3390 /*
3391  * Blink the LED according to the specified on/off times.
3392  */
3393 static void
3394 iwi_led_blink(struct iwi_softc *sc, int on, int off)
3395 {
3396         uint32_t v;
3397
3398         v = iwi_read_event(sc);
3399         v |= sc->sc_ledpin;
3400         iwi_write_event(sc, iwi_toggle_event(v));
3401         sc->sc_blinking = 1;
3402         sc->sc_ledoff = off;
3403         callout_reset(&sc->sc_ledtimer, on, iwi_led_off, sc);
3404 }
3405
3406 static void
3407 iwi_led_event(struct iwi_softc *sc, int event)
3408 {
3409         /* NB: on/off times from the Atheros NDIS driver, w/ permission */
3410         static const struct {
3411                 u_int           rate;           /* tx/rx iwi rate */
3412                 u_int16_t       timeOn;         /* LED on time (ms) */
3413                 u_int16_t       timeOff;        /* LED off time (ms) */
3414         } blinkrates[] = {
3415                 { IWI_RATE_OFDM54, 40,  10 },
3416                 { IWI_RATE_OFDM48, 44,  11 },
3417                 { IWI_RATE_OFDM36, 50,  13 },
3418                 { IWI_RATE_OFDM24, 57,  14 },
3419                 { IWI_RATE_OFDM18, 67,  16 },
3420                 { IWI_RATE_OFDM12, 80,  20 },
3421                 { IWI_RATE_DS11,  100,  25 },
3422                 { IWI_RATE_OFDM9, 133,  34 },
3423                 { IWI_RATE_OFDM6, 160,  40 },
3424                 { IWI_RATE_DS5,   200,  50 },
3425                 {            6,   240,  58 },   /* XXX 3Mb/s if it existed */
3426                 { IWI_RATE_DS2,   267,  66 },
3427                 { IWI_RATE_DS1,   400, 100 },
3428                 {            0,   500, 130 },   /* unknown rate/polling */
3429         };
3430         uint32_t txrate;
3431         int j = 0;                      /* XXX silence compiler */
3432
3433         sc->sc_ledevent = ticks;        /* time of last event */
3434         if (sc->sc_blinking)            /* don't interrupt active blink */
3435                 return;
3436         switch (event) {
3437         case IWI_LED_POLL:
3438                 j = nitems(blinkrates)-1;
3439                 break;
3440         case IWI_LED_TX:
3441                 /* read current transmission rate from adapter */
3442                 txrate = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE);
3443                 if (blinkrates[sc->sc_txrix].rate != txrate) {
3444                         for (j = 0; j < nitems(blinkrates)-1; j++)
3445                                 if (blinkrates[j].rate == txrate)
3446                                         break;
3447                         sc->sc_txrix = j;
3448                 } else
3449                         j = sc->sc_txrix;
3450                 break;
3451         case IWI_LED_RX:
3452                 if (blinkrates[sc->sc_rxrix].rate != sc->sc_rxrate) {
3453                         for (j = 0; j < nitems(blinkrates)-1; j++)
3454                                 if (blinkrates[j].rate == sc->sc_rxrate)
3455                                         break;
3456                         sc->sc_rxrix = j;
3457                 } else
3458                         j = sc->sc_rxrix;
3459                 break;
3460         }
3461         /* XXX beware of overflow */
3462         iwi_led_blink(sc, (blinkrates[j].timeOn * hz) / 1000,
3463                 (blinkrates[j].timeOff * hz) / 1000);
3464 }
3465
3466 static int
3467 iwi_sysctl_softled(SYSCTL_HANDLER_ARGS)
3468 {
3469         struct iwi_softc *sc = arg1;
3470         int softled = sc->sc_softled;
3471         int error;
3472
3473         error = sysctl_handle_int(oidp, &softled, 0, req);
3474         if (error || !req->newptr)
3475                 return error;
3476         softled = (softled != 0);
3477         if (softled != sc->sc_softled) {
3478                 if (softled) {
3479                         uint32_t v = iwi_read_event(sc);
3480                         v &= ~sc->sc_ledpin;
3481                         iwi_write_event(sc, iwi_toggle_event(v));
3482                 }
3483                 sc->sc_softled = softled;
3484         }
3485         return 0;
3486 }
3487
3488 static void
3489 iwi_ledattach(struct iwi_softc *sc)
3490 {
3491         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
3492         struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
3493
3494         sc->sc_blinking = 0;
3495         sc->sc_ledstate = 1;
3496         sc->sc_ledidle = (2700*hz)/1000;        /* 2.7sec */
3497         callout_init_mtx(&sc->sc_ledtimer, &sc->sc_mtx, 0);
3498
3499         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3500                 "softled", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
3501                 iwi_sysctl_softled, "I", "enable/disable software LED support");
3502         SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3503                 "ledpin", CTLFLAG_RW, &sc->sc_ledpin, 0,
3504                 "pin setting to turn activity LED on");
3505         SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3506                 "ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0,
3507                 "idle time for inactivity LED (ticks)");
3508         /* XXX for debugging */
3509         SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3510                 "nictype", CTLFLAG_RD, &sc->sc_nictype, 0,
3511                 "NIC type from EEPROM");
3512
3513         sc->sc_ledpin = IWI_RST_LED_ACTIVITY;
3514         sc->sc_softled = 1;
3515
3516         sc->sc_nictype = (iwi_read_prom_word(sc, IWI_EEPROM_NIC) >> 8) & 0xff;
3517         if (sc->sc_nictype == 1) {
3518                 /*
3519                  * NB: led's are reversed.
3520                  */
3521                 sc->sc_ledpin = IWI_RST_LED_ASSOCIATED;
3522         }
3523 }
3524
3525 static void
3526 iwi_scan_start(struct ieee80211com *ic)
3527 {
3528         /* ignore */
3529 }
3530
3531 static void
3532 iwi_set_channel(struct ieee80211com *ic)
3533 {
3534         struct iwi_softc *sc = ic->ic_softc;
3535
3536         if (sc->fw_state == IWI_FW_IDLE)
3537                 iwi_setcurchan(sc, ic->ic_curchan->ic_ieee);
3538 }
3539
3540 static void
3541 iwi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
3542 {
3543         struct ieee80211vap *vap = ss->ss_vap;
3544         struct iwi_softc *sc = vap->iv_ic->ic_softc;
3545         IWI_LOCK_DECL;
3546
3547         IWI_LOCK(sc);
3548         if (iwi_scanchan(sc, maxdwell, 0))
3549                 ieee80211_cancel_scan(vap);
3550         IWI_UNLOCK(sc);
3551 }
3552
3553 static void
3554 iwi_scan_mindwell(struct ieee80211_scan_state *ss)
3555 {
3556         /* NB: don't try to abort scan; wait for firmware to finish */
3557 }
3558
3559 static void
3560 iwi_scan_end(struct ieee80211com *ic)
3561 {
3562         struct iwi_softc *sc = ic->ic_softc;
3563         IWI_LOCK_DECL;
3564
3565         IWI_LOCK(sc);
3566         sc->flags &= ~IWI_FLAG_CHANNEL_SCAN;
3567         /* NB: make sure we're still scanning */
3568         if (sc->fw_state == IWI_FW_SCANNING)
3569                 iwi_cmd(sc, IWI_CMD_ABORT_SCAN, NULL, 0);
3570         IWI_UNLOCK(sc);
3571 }