sys/dev/netif/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  * __FBSDID("$FreeBSD: src/sys/dev/iwi/if_iwi.c,v 1.72 2009/07/10 15:28:33 rpaulo Exp $");
  30  */
  31
  32 #include <sys/cdefs.h>
  33
  34 /*-
  35  * Intel(R) PRO/Wireless 2200BG/2225BG/2915ABG driver
  36  * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
  37  */
  38
  39 #include <sys/param.h>
  40 #include <sys/sysctl.h>
  41 #include <sys/sockio.h>
  42 #include <sys/mbuf.h>
  43 #include <sys/kernel.h>
  44 #include <sys/socket.h>
  45 #include <sys/systm.h>
  46 #include <sys/malloc.h>
  47 #include <sys/lock.h>
  48 #include <sys/mutex.h>
  49 #include <sys/module.h>
  50 #include <sys/bus.h>
  51 #include <sys/endian.h>
  52 #include <sys/proc.h>
  53 #include <sys/mount.h>
  54 #include <sys/namei.h>
  55 #include <sys/linker.h>
  56 #include <sys/firmware.h>
  57 #include <sys/taskqueue.h>
  58 #include <sys/devfs.h>
  59
  60 #include <sys/resource.h>
  61 #include <sys/rman.h>
  62
  63 #include <bus/pci/pcireg.h>
  64 #include <bus/pci/pcivar.h>
  65
  66 #include <net/bpf.h>
  67 #include <net/if.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 #include <net/ifq_var.h>
  74
  75 #include <netproto/802_11/ieee80211_var.h>
  76 #include <netproto/802_11/ieee80211_radiotap.h>
  77 #include <netproto/802_11/ieee80211_input.h>
  78 #include <netproto/802_11/ieee80211_regdomain.h>
  79
  80 #include <netinet/in.h>
  81 #include <netinet/in_systm.h>
  82 #include <netinet/in_var.h>
  83 #include <netinet/ip.h>
  84 #include <netinet/if_ether.h>
  85
  86 #include <dev/netif/iwi/if_iwireg.h>
  87 #include <dev/netif/iwi/if_iwivar.h>
  88
  89 #define IWI_DEBUG
  90 #ifdef IWI_DEBUG
  91 #define DPRINTF(x)      do { if (iwi_debug > 0) kprintf x; } while (0)
  92 #define DPRINTFN(n, x)  do { if (iwi_debug >= (n)) kprintf 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 name[IFNAMSIZ], int unit, int opmode, int flags,
 135                     const uint8_t bssid[IEEE80211_ADDR_LEN],
 136                     const uint8_t mac[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 *, struct ieee80211com *);
 158 static void     iwi_update_wme(void *, int);
 159 static int      iwi_wme_update(struct ieee80211com *);
 160 static uint16_t iwi_read_prom_word(struct iwi_softc *, uint8_t);
 161 static void     iwi_frame_intr(struct iwi_softc *, struct iwi_rx_data *, int,
 162                     struct iwi_frame *);
 163 static void     iwi_notification_intr(struct iwi_softc *, struct iwi_notif *);
 164 static void     iwi_rx_intr(struct iwi_softc *);
 165 static void     iwi_tx_intr(struct iwi_softc *, struct iwi_tx_ring *);
 166 static void     iwi_intr(void *);
 167 static int      iwi_cmd(struct iwi_softc *, uint8_t, void *, uint8_t);
 168 static void     iwi_write_ibssnode(struct iwi_softc *, const u_int8_t [], int);
 169 static int      iwi_tx_start(struct ifnet *, struct mbuf *,
 170                     struct ieee80211_node *, int);
 171 static int      iwi_raw_xmit(struct ieee80211_node *, struct mbuf *,
 172                     const struct ieee80211_bpf_params *);
 173 static void     iwi_start_locked(struct ifnet *);
 174 static void     iwi_start(struct ifnet *);
 175 static void     iwi_watchdog(void *);
 176 static int      iwi_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *ucred);
 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 int      iwi_scanchan(struct iwi_softc *, unsigned long, int);
 186 static void     iwi_scan_start(struct ieee80211com *);
 187 static void     iwi_scan_end(struct ieee80211com *);
 188 static void     iwi_set_channel(struct ieee80211com *);
 189 static void     iwi_scan_curchan(struct ieee80211_scan_state *, unsigned long maxdwell);
 190 static void     iwi_scan_mindwell(struct ieee80211_scan_state *);
 191 static int      iwi_auth_and_assoc(struct iwi_softc *, struct ieee80211vap *);
 192 static void     iwi_disassoc(void *, int);
 193 static int      iwi_disassociate(struct iwi_softc *, int quiet);
 194 static void     iwi_init_locked(struct iwi_softc *);
 195 static void     iwi_init(void *);
 196 static int      iwi_init_fw_dma(struct iwi_softc *, int);
 197 static void     iwi_stop_locked(void *);
 198 static void     iwi_stop(struct iwi_softc *);
 199 static void     iwi_restart(void *, int);
 200 static int      iwi_getrfkill(struct iwi_softc *);
 201 static void     iwi_radio_on(void *, int);
 202 static void     iwi_radio_off(void *, int);
 203 static void     iwi_sysctlattach(struct iwi_softc *);
 204 static void     iwi_led_event(struct iwi_softc *, int);
 205 static void     iwi_ledattach(struct iwi_softc *);
 206
 207 static int iwi_probe(device_t);
 208 static int iwi_attach(device_t);
 209 static int iwi_detach(device_t);
 210 static int iwi_shutdown(device_t);
 211 static int iwi_suspend(device_t);
 212 static int iwi_resume(device_t);
 213
 214 static device_method_t iwi_methods[] = {
 215         /* Device interface */
 216         DEVMETHOD(device_probe,         iwi_probe),
 217         DEVMETHOD(device_attach,        iwi_attach),
 218         DEVMETHOD(device_detach,        iwi_detach),
 219         DEVMETHOD(device_shutdown,      iwi_shutdown),
 220         DEVMETHOD(device_suspend,       iwi_suspend),
 221         DEVMETHOD(device_resume,        iwi_resume),
 222
 223         { 0, 0 }
 224 };
 225
 226 static driver_t iwi_driver = {
 227         "iwi",
 228         iwi_methods,
 229         sizeof (struct iwi_softc)
 230 };
 231
 232 static devclass_t iwi_devclass;
 233
 234 DRIVER_MODULE(iwi, pci, iwi_driver, iwi_devclass, 0, 0);
 235
 236 static __inline uint8_t
 237 MEM_READ_1(struct iwi_softc *sc, uint32_t addr)
 238 {
 239         CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
 240         return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA);
 241 }
 242
 243 static __inline uint32_t
 244 MEM_READ_4(struct iwi_softc *sc, uint32_t addr)
 245 {
 246         CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
 247         return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA);
 248 }
 249
 250 static int
 251 iwi_probe(device_t dev)
 252 {
 253         const struct iwi_ident *ident;
 254
 255         for (ident = iwi_ident_table; ident->name != NULL; ident++) {
 256                 if (pci_get_vendor(dev) == ident->vendor &&
 257                     pci_get_device(dev) == ident->device) {
 258                         device_set_desc(dev, ident->name);
 259                         return 0;
 260                 }
 261         }
 262         return ENXIO;
 263 }
 264
 265 /* Base Address Register */
 266 #define IWI_PCI_BAR0    0x10
 267
 268 static int
 269 iwi_attach(device_t dev)
 270 {
 271         struct iwi_softc *sc = device_get_softc(dev);
 272         struct ifnet *ifp;
 273         struct ieee80211com *ic;
 274         uint16_t val;
 275         int i, error;
 276         uint8_t bands;
 277         uint8_t macaddr[IEEE80211_ADDR_LEN];
 278
 279         sc->sc_dev = dev;
 280
 281         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 282         if (ifp == NULL) {
 283                 device_printf(dev, "can not if_alloc()\n");
 284                 return ENXIO;
 285         }
 286         ic = ifp->if_l2com;
 287
 288         IWI_LOCK_INIT(sc);
 289
 290         devfs_clone_bitmap_init(&sc->sc_unr);
 291
 292         TASK_INIT(&sc->sc_radiontask, 0, iwi_radio_on, sc);
 293         TASK_INIT(&sc->sc_radiofftask, 0, iwi_radio_off, sc);
 294         TASK_INIT(&sc->sc_restarttask, 0, iwi_restart, sc);
 295         TASK_INIT(&sc->sc_disassoctask, 0, iwi_disassoc, sc);
 296         TASK_INIT(&sc->sc_wmetask, 0, iwi_update_wme, sc);
 297
 298         callout_init(&sc->sc_wdtimer);
 299         callout_init(&sc->sc_rftimer);
 300
 301         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 302                 device_printf(dev, "chip is in D%d power mode "
 303                     "-- setting to D0\n", pci_get_powerstate(dev));
 304                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 305         }
 306
 307         pci_write_config(dev, 0x41, 0, 1);
 308
 309         /* enable bus-mastering */
 310         pci_enable_busmaster(dev);
 311
 312         sc->mem_rid = IWI_PCI_BAR0;
 313         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
 314             RF_ACTIVE);
 315         if (sc->mem == NULL) {
 316                 device_printf(dev, "could not allocate memory resource\n");
 317                 goto fail;
 318         }
 319
 320         sc->sc_st = rman_get_bustag(sc->mem);
 321         sc->sc_sh = rman_get_bushandle(sc->mem);
 322
 323         sc->irq_rid = 0;
 324         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
 325             RF_ACTIVE | RF_SHAREABLE);
 326         if (sc->irq == NULL) {
 327                 device_printf(dev, "could not allocate interrupt resource\n");
 328                 goto fail;
 329         }
 330
 331         if (iwi_reset(sc) != 0) {
 332                 device_printf(dev, "could not reset adapter\n");
 333                 goto fail;
 334         }
 335
 336         /*
 337          * Allocate rings.
 338          */
 339         if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) {
 340                 device_printf(dev, "could not allocate Cmd ring\n");
 341                 goto fail;
 342         }
 343
 344         for (i = 0; i < 4; i++) {
 345                 error = iwi_alloc_tx_ring(sc, &sc->txq[i], IWI_TX_RING_COUNT,
 346                     IWI_CSR_TX1_RIDX + i * 4,
 347                     IWI_CSR_TX1_WIDX + i * 4);
 348                 if (error != 0) {
 349                         device_printf(dev, "could not allocate Tx ring %d\n",
 350                                 i+i);
 351                         goto fail;
 352                 }
 353         }
 354
 355         if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) {
 356                 device_printf(dev, "could not allocate Rx ring\n");
 357                 goto fail;
 358         }
 359
 360         iwi_wme_init(sc);
 361
 362         ifp->if_softc = sc;
 363         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 364         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 365         ifp->if_init = iwi_init;
 366         ifp->if_ioctl = iwi_ioctl;
 367         ifp->if_start = iwi_start;
 368         ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
 369         ifq_set_ready(&ifp->if_snd);
 370
 371         ic->ic_ifp = ifp;
 372         ic->ic_opmode = IEEE80211_M_STA;
 373         ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
 374
 375         /* set device capabilities */
 376         ic->ic_caps =
 377               IEEE80211_C_STA           /* station mode supported */
 378             | IEEE80211_C_IBSS          /* IBSS mode supported */
 379             | IEEE80211_C_MONITOR       /* monitor mode supported */
 380             | IEEE80211_C_PMGT          /* power save supported */
 381             | IEEE80211_C_SHPREAMBLE    /* short preamble supported */
 382             | IEEE80211_C_WPA           /* 802.11i */
 383             | IEEE80211_C_WME           /* 802.11e */
 384 #if 0
 385             | IEEE80211_C_BGSCAN        /* capable of bg scanning */
 386 #endif
 387             ;
 388
 389         /* read MAC address from EEPROM */
 390         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0);
 391         macaddr[0] = val & 0xff;
 392         macaddr[1] = val >> 8;
 393         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1);
 394         macaddr[2] = val & 0xff;
 395         macaddr[3] = val >> 8;
 396         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2);
 397         macaddr[4] = val & 0xff;
 398         macaddr[5] = val >> 8;
 399
 400         bands = 0;
 401         setbit(&bands, IEEE80211_MODE_11B);
 402         setbit(&bands, IEEE80211_MODE_11G);
 403         if (pci_get_device(dev) >= 0x4223)
 404                 setbit(&bands, IEEE80211_MODE_11A);
 405         ieee80211_init_channels(ic, NULL, &bands);
 406
 407         ieee80211_ifattach(ic, macaddr);
 408         /* override default methods */
 409         ic->ic_node_alloc = iwi_node_alloc;
 410         sc->sc_node_free = ic->ic_node_free;
 411         ic->ic_node_free = iwi_node_free;
 412         ic->ic_raw_xmit = iwi_raw_xmit;
 413         ic->ic_scan_start = iwi_scan_start;
 414         ic->ic_scan_end = iwi_scan_end;
 415         ic->ic_set_channel = iwi_set_channel;
 416         ic->ic_scan_curchan = iwi_scan_curchan;
 417         ic->ic_scan_mindwell = iwi_scan_mindwell;
 418         ic->ic_wme.wme_update = iwi_wme_update;
 419
 420         ic->ic_vap_create = iwi_vap_create;
 421         ic->ic_vap_delete = iwi_vap_delete;
 422
 423         ieee80211_radiotap_attach(ic,
 424             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 425                 IWI_TX_RADIOTAP_PRESENT,
 426             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 427                 IWI_RX_RADIOTAP_PRESENT);
 428
 429         iwi_sysctlattach(sc);
 430         iwi_ledattach(sc);
 431
 432         /*
 433          * Hook our interrupt after all initialization is complete.
 434          */
 435         error = bus_setup_intr(dev, sc->irq, INTR_MPSAFE,
 436             iwi_intr, sc, &sc->sc_ih, NULL);
 437         if (error != 0) {
 438                 device_printf(dev, "could not set up interrupt\n");
 439                 goto fail;
 440         }
 441
 442         if (bootverbose)
 443                 ieee80211_announce(ic);
 444
 445         return 0;
 446 fail:
 447         /* XXX fix */
 448         iwi_detach(dev);
 449         return ENXIO;
 450 }
 451
 452 static int
 453 iwi_detach(device_t dev)
 454 {
 455         struct iwi_softc *sc = device_get_softc(dev);
 456         struct ifnet *ifp = sc->sc_ifp;
 457         struct ieee80211com *ic = ifp->if_l2com;
 458
 459         /* NB: do early to drain any pending tasks */
 460         ieee80211_draintask(ic, &sc->sc_radiontask);
 461         ieee80211_draintask(ic, &sc->sc_radiofftask);
 462         ieee80211_draintask(ic, &sc->sc_restarttask);
 463         ieee80211_draintask(ic, &sc->sc_disassoctask);
 464
 465         iwi_stop(sc);
 466
 467         ieee80211_ifdetach(ic);
 468
 469         iwi_put_firmware(sc);
 470         iwi_release_fw_dma(sc);
 471
 472         iwi_free_cmd_ring(sc, &sc->cmdq);
 473         iwi_free_tx_ring(sc, &sc->txq[0]);
 474         iwi_free_tx_ring(sc, &sc->txq[1]);
 475         iwi_free_tx_ring(sc, &sc->txq[2]);
 476         iwi_free_tx_ring(sc, &sc->txq[3]);
 477         iwi_free_rx_ring(sc, &sc->rxq);
 478
 479         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 480         bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
 481
 482         bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
 483
 484         devfs_clone_bitmap_uninit(&sc->sc_unr);
 485
 486         if (sc->sc_sysctl_tree != NULL)
 487                 sysctl_ctx_free(&sc->sc_sysctl_ctx);
 488
 489         IWI_LOCK_DESTROY(sc);
 490
 491         if_free(ifp);
 492
 493         return 0;
 494 }
 495
 496 static struct ieee80211vap *
 497 iwi_vap_create(struct ieee80211com *ic,
 498         const char name[IFNAMSIZ], int unit, int opmode, int flags,
 499         const uint8_t bssid[IEEE80211_ADDR_LEN],
 500         const uint8_t mac[IEEE80211_ADDR_LEN])
 501 {
 502         struct ifnet *ifp = ic->ic_ifp;
 503         struct iwi_softc *sc = ifp->if_softc;
 504         struct iwi_vap *ivp;
 505         struct ieee80211vap *vap;
 506         int i;
 507
 508         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 509                 return NULL;
 510         /*
 511          * Get firmware image (and possibly dma memory) on mode change.
 512          */
 513         if (iwi_get_firmware(sc, opmode))
 514                 return NULL;
 515         /* allocate DMA memory for mapping firmware image */
 516         i = sc->fw_fw.size;
 517         if (sc->fw_boot.size > i)
 518                 i = sc->fw_boot.size;
 519         /* XXX do we dma the ucode as well ? */
 520         if (sc->fw_uc.size > i)
 521                 i = sc->fw_uc.size;
 522         if (iwi_init_fw_dma(sc, i))
 523                 return NULL;
 524
 525         ivp = (struct iwi_vap *) kmalloc(sizeof(struct iwi_vap),
 526             M_80211_VAP, M_WAITOK | M_ZERO);
 527         if (ivp == NULL)
 528                 return NULL;
 529         vap = &ivp->iwi_vap;
 530         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
 531         /* override the default, the setting comes from the linux driver */
 532         vap->iv_bmissthreshold = 24;
 533         /* override with driver methods */
 534         ivp->iwi_newstate = vap->iv_newstate;
 535         vap->iv_newstate = iwi_newstate;
 536
 537         /* complete setup */
 538         ieee80211_vap_attach(vap, ieee80211_media_change, iwi_media_status);
 539         ic->ic_opmode = opmode;
 540         return vap;
 541 }
 542
 543 static void
 544 iwi_vap_delete(struct ieee80211vap *vap)
 545 {
 546         struct iwi_vap *ivp = IWI_VAP(vap);
 547
 548         ieee80211_vap_detach(vap);
 549         kfree(ivp, M_80211_VAP);
 550 }
 551
 552 static void
 553 iwi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
 554 {
 555         if (error != 0)
 556                 return;
 557
 558         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
 559
 560         *(bus_addr_t *)arg = segs[0].ds_addr;
 561 }
 562
 563 static int
 564 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, int count)
 565 {
 566         int error;
 567
 568         ring->count = count;
 569         ring->queued = 0;
 570         ring->cur = ring->next = 0;
 571
 572         error = bus_dma_tag_create(NULL, 4, 0,
 573             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 574             count * IWI_CMD_DESC_SIZE, 1, count * IWI_CMD_DESC_SIZE,
 575             0 , &ring->desc_dmat);
 576         if (error != 0) {
 577                 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
 578                 goto fail;
 579         }
 580
 581         error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
 582             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
 583         if (error != 0) {
 584                 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
 585                 goto fail;
 586         }
 587
 588         error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
 589             count * IWI_CMD_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
 590         if (error != 0) {
 591                 device_printf(sc->sc_dev, "could not load desc DMA map\n");
 592                 goto fail;
 593         }
 594
 595         return 0;
 596
 597 fail:   iwi_free_cmd_ring(sc, ring);
 598         return error;
 599 }
 600
 601 static void
 602 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
 603 {
 604         ring->queued = 0;
 605         ring->cur = ring->next = 0;
 606 }
 607
 608 static void
 609 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
 610 {
 611         if (ring->desc != NULL) {
 612                 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
 613                     BUS_DMASYNC_POSTWRITE);
 614                 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
 615                 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
 616         }
 617
 618         if (ring->desc_dmat != NULL)
 619                 bus_dma_tag_destroy(ring->desc_dmat);
 620 }
 621
 622 static int
 623 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, int count,
 624     bus_addr_t csr_ridx, bus_addr_t csr_widx)
 625 {
 626         int i, error;
 627
 628         ring->count = count;
 629         ring->queued = 0;
 630         ring->cur = ring->next = 0;
 631         ring->csr_ridx = csr_ridx;
 632         ring->csr_widx = csr_widx;
 633
 634         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 635             BUS_SPACE_MAXADDR, NULL, NULL, count * IWI_TX_DESC_SIZE, 1,
 636             count * IWI_TX_DESC_SIZE, 0, &ring->desc_dmat);
 637         if (error != 0) {
 638                 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
 639                 goto fail;
 640         }
 641
 642         error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
 643             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
 644         if (error != 0) {
 645                 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
 646                 goto fail;
 647         }
 648
 649         error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
 650             count * IWI_TX_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
 651         if (error != 0) {
 652                 device_printf(sc->sc_dev, "could not load desc DMA map\n");
 653                 goto fail;
 654         }
 655
 656         ring->data = kmalloc(count * sizeof (struct iwi_tx_data), M_DEVBUF,
 657             M_WAITOK | M_ZERO);
 658         if (ring->data == NULL) {
 659                 device_printf(sc->sc_dev, "could not allocate soft data\n");
 660                 error = ENOMEM;
 661                 goto fail;
 662         }
 663
 664         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 665             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IWI_MAX_NSEG,
 666             MCLBYTES, 0, &ring->data_dmat);
 667         if (error != 0) {
 668                 device_printf(sc->sc_dev, "could not create data DMA tag\n");
 669                 goto fail;
 670         }
 671
 672         for (i = 0; i < count; i++) {
 673                 error = bus_dmamap_create(ring->data_dmat, 0,
 674                     &ring->data[i].map);
 675                 if (error != 0) {
 676                         device_printf(sc->sc_dev, "could not create DMA map\n");
 677                         goto fail;
 678                 }
 679         }
 680
 681         return 0;
 682
 683 fail:   iwi_free_tx_ring(sc, ring);
 684         return error;
 685 }
 686
 687 static void
 688 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
 689 {
 690         struct iwi_tx_data *data;
 691         int i;
 692
 693         for (i = 0; i < ring->count; i++) {
 694                 data = &ring->data[i];
 695
 696                 if (data->m != NULL) {
 697                         bus_dmamap_sync(ring->data_dmat, data->map,
 698                             BUS_DMASYNC_POSTWRITE);
 699                         bus_dmamap_unload(ring->data_dmat, data->map);
 700                         m_freem(data->m);
 701                         data->m = NULL;
 702                 }
 703
 704                 if (data->ni != NULL) {
 705                         ieee80211_free_node(data->ni);
 706                         data->ni = NULL;
 707                 }
 708         }
 709
 710         ring->queued = 0;
 711         ring->cur = ring->next = 0;
 712 }
 713
 714 static void
 715 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
 716 {
 717         struct iwi_tx_data *data;
 718         int i;
 719
 720         if (ring->desc != NULL) {
 721                 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
 722                     BUS_DMASYNC_POSTWRITE);
 723                 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
 724                 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
 725         }
 726
 727         if (ring->desc_dmat != NULL)
 728                 bus_dma_tag_destroy(ring->desc_dmat);
 729
 730         if (ring->data != NULL) {
 731                 for (i = 0; i < ring->count; i++) {
 732                         data = &ring->data[i];
 733
 734                         if (data->m != NULL) {
 735                                 bus_dmamap_sync(ring->data_dmat, data->map,
 736                                     BUS_DMASYNC_POSTWRITE);
 737                                 bus_dmamap_unload(ring->data_dmat, data->map);
 738                                 m_freem(data->m);
 739                         }
 740
 741                         if (data->ni != NULL)
 742                                 ieee80211_free_node(data->ni);
 743
 744                         if (data->map != NULL)
 745                                 bus_dmamap_destroy(ring->data_dmat, data->map);
 746                 }
 747
 748                 kfree(ring->data, M_DEVBUF);
 749         }
 750
 751         if (ring->data_dmat != NULL)
 752                 bus_dma_tag_destroy(ring->data_dmat);
 753 }
 754
 755 static int
 756 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, int count)
 757 {
 758         struct iwi_rx_data *data;
 759         int i, error;
 760
 761         ring->count = count;
 762         ring->cur = 0;
 763
 764         ring->data = kmalloc(count * sizeof (struct iwi_rx_data), M_DEVBUF,
 765             M_WAITOK | M_ZERO);
 766         if (ring->data == NULL) {
 767                 device_printf(sc->sc_dev, "could not allocate soft data\n");
 768                 error = ENOMEM;
 769                 goto fail;
 770         }
 771
 772         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 773             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES,
 774             0, &ring->data_dmat);
 775         if (error != 0) {
 776                 device_printf(sc->sc_dev, "could not create data DMA tag\n");
 777                 goto fail;
 778         }
 779
 780         for (i = 0; i < count; i++) {
 781                 data = &ring->data[i];
 782
 783                 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
 784                 if (error != 0) {
 785                         device_printf(sc->sc_dev, "could not create DMA map\n");
 786                         goto fail;
 787                 }
 788
 789                 data->m = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
 790                 if (data->m == NULL) {
 791                         device_printf(sc->sc_dev,
 792                             "could not allocate rx mbuf\n");
 793                         error = ENOMEM;
 794                         goto fail;
 795                 }
 796
 797                 error = bus_dmamap_load(ring->data_dmat, data->map,
 798                     mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
 799                     &data->physaddr, 0);
 800                 if (error != 0) {
 801                         device_printf(sc->sc_dev,
 802                             "could not load rx buf DMA map");
 803                         goto fail;
 804                 }
 805
 806                 data->reg = IWI_CSR_RX_BASE + i * 4;
 807         }
 808
 809         return 0;
 810
 811 fail:   iwi_free_rx_ring(sc, ring);
 812         return error;
 813 }
 814
 815 static void
 816 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
 817 {
 818         ring->cur = 0;
 819 }
 820
 821 static void
 822 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
 823 {
 824         struct iwi_rx_data *data;
 825         int i;
 826
 827         if (ring->data != NULL) {
 828                 for (i = 0; i < ring->count; i++) {
 829                         data = &ring->data[i];
 830
 831                         if (data->m != NULL) {
 832                                 bus_dmamap_sync(ring->data_dmat, data->map,
 833                                     BUS_DMASYNC_POSTREAD);
 834                                 bus_dmamap_unload(ring->data_dmat, data->map);
 835                                 m_freem(data->m);
 836                         }
 837
 838                         if (data->map != NULL)
 839                                 bus_dmamap_destroy(ring->data_dmat, data->map);
 840                 }
 841
 842                 kfree(ring->data, M_DEVBUF);
 843         }
 844
 845         if (ring->data_dmat != NULL)
 846                 bus_dma_tag_destroy(ring->data_dmat);
 847 }
 848
 849 static int
 850 iwi_shutdown(device_t dev)
 851 {
 852         struct iwi_softc *sc = device_get_softc(dev);
 853
 854         iwi_stop(sc);
 855         iwi_put_firmware(sc);           /* ??? XXX */
 856
 857         return 0;
 858 }
 859
 860 static int
 861 iwi_suspend(device_t dev)
 862 {
 863         struct iwi_softc *sc = device_get_softc(dev);
 864
 865         iwi_stop(sc);
 866
 867         return 0;
 868 }
 869
 870 static int
 871 iwi_resume(device_t dev)
 872 {
 873         struct iwi_softc *sc = device_get_softc(dev);
 874         struct ifnet *ifp = sc->sc_ifp;
 875
 876         pci_write_config(dev, 0x41, 0, 1);
 877
 878         if (ifp->if_flags & IFF_UP)
 879                 iwi_init(sc);
 880
 881         return 0;
 882 }
 883
 884 static struct ieee80211_node *
 885 iwi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
 886 {
 887         struct iwi_node *in;
 888
 889         in = kmalloc(sizeof (struct iwi_node), M_80211_NODE, M_NOWAIT | M_ZERO);
 890         if (in == NULL)
 891                 return NULL;
 892         /* XXX assign sta table entry for adhoc */
 893         in->in_station = -1;
 894
 895         return &in->in_node;
 896 }
 897
 898 static void
 899 iwi_node_free(struct ieee80211_node *ni)
 900 {
 901         struct ieee80211com *ic = ni->ni_ic;
 902         struct iwi_softc *sc = ic->ic_ifp->if_softc;
 903         struct iwi_node *in = (struct iwi_node *)ni;
 904
 905         if (in->in_station != -1) {
 906                 DPRINTF(("%s mac %6D station %u\n", __func__,
 907                     ni->ni_macaddr, ":", in->in_station));
 908                 devfs_clone_bitmap_rst(&sc->sc_unr, in->in_station);
 909         }
 910
 911         sc->sc_node_free(ni);
 912 }
 913
 914 /*
 915  * Convert h/w rate code to IEEE rate code.
 916  */
 917 static int
 918 iwi_cvtrate(int iwirate)
 919 {
 920         switch (iwirate) {
 921         case IWI_RATE_DS1:      return 2;
 922         case IWI_RATE_DS2:      return 4;
 923         case IWI_RATE_DS5:      return 11;
 924         case IWI_RATE_DS11:     return 22;
 925         case IWI_RATE_OFDM6:    return 12;
 926         case IWI_RATE_OFDM9:    return 18;
 927         case IWI_RATE_OFDM12:   return 24;
 928         case IWI_RATE_OFDM18:   return 36;
 929         case IWI_RATE_OFDM24:   return 48;
 930         case IWI_RATE_OFDM36:   return 72;
 931         case IWI_RATE_OFDM48:   return 96;
 932         case IWI_RATE_OFDM54:   return 108;
 933         }
 934         return 0;
 935 }
 936
 937 /*
 938  * The firmware automatically adapts the transmit speed.  We report its current
 939  * value here.
 940  */
 941 static void
 942 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 943 {
 944         struct ieee80211vap *vap = ifp->if_softc;
 945         struct ieee80211com *ic = vap->iv_ic;
 946         struct iwi_softc *sc = ic->ic_ifp->if_softc;
 947
 948         /* read current transmission rate from adapter */
 949         vap->iv_bss->ni_txrate =
 950             iwi_cvtrate(CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE));
 951         ieee80211_media_status(ifp, imr);
 952 }
 953
 954 static int
 955 iwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 956 {
 957         struct iwi_vap *ivp = IWI_VAP(vap);
 958         struct ieee80211com *ic = vap->iv_ic;
 959         struct ifnet *ifp = ic->ic_ifp;
 960         struct iwi_softc *sc = ifp->if_softc;
 961         IWI_LOCK_DECL;
 962
 963         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
 964                 ieee80211_state_name[vap->iv_state],
 965                 ieee80211_state_name[nstate], sc->flags));
 966
 967         IEEE80211_UNLOCK(ic);
 968         IWI_LOCK(sc);
 969         switch (nstate) {
 970         case IEEE80211_S_INIT:
 971                 /*
 972                  * NB: don't try to do this if iwi_stop_master has
 973                  *     shutdown the firmware and disabled interrupts.
 974                  */
 975                 if (vap->iv_state == IEEE80211_S_RUN &&
 976                     (sc->flags & IWI_FLAG_FW_INITED))
 977                         iwi_disassociate(sc, 0);
 978                 break;
 979         case IEEE80211_S_AUTH:
 980                 iwi_auth_and_assoc(sc, vap);
 981                 break;
 982         case IEEE80211_S_RUN:
 983                 if (vap->iv_opmode == IEEE80211_M_IBSS &&
 984                     vap->iv_state == IEEE80211_S_SCAN) {
 985                         /*
 986                          * XXX when joining an ibss network we are called
 987                          * with a SCAN -> RUN transition on scan complete.
 988                          * Use that to call iwi_auth_and_assoc.  On completing
 989                          * the join we are then called again with an
 990                          * AUTH -> RUN transition and we want to do nothing.
 991                          * This is all totally bogus and needs to be redone.
 992                          */
 993                         iwi_auth_and_assoc(sc, vap);
 994                 }
 995                 break;
 996         case IEEE80211_S_ASSOC:
 997                 /*
 998                  * If we are transitioning from AUTH then just wait
 999                  * for the ASSOC status to come back from the firmware.
1000                  * Otherwise we need to issue the association request.
1001                  */
1002                 if (vap->iv_state == IEEE80211_S_AUTH)
1003                         break;
1004                 iwi_auth_and_assoc(sc, vap);
1005                 break;
1006         default:
1007                 break;
1008         }
1009         IWI_UNLOCK(sc);
1010         IEEE80211_LOCK(ic);
1011         return ivp->iwi_newstate(vap, nstate, arg);
1012 }
1013
1014 /*
1015  * WME parameters coming from IEEE 802.11e specification.  These values are
1016  * already declared in ieee80211_proto.c, but they are static so they can't
1017  * be reused here.
1018  */
1019 static const struct wmeParams iwi_wme_cck_params[WME_NUM_AC] = {
1020         { 0, 3, 5,  7,   0 },   /* WME_AC_BE */
1021         { 0, 3, 5, 10,   0 },   /* WME_AC_BK */
1022         { 0, 2, 4,  5, 188 },   /* WME_AC_VI */
1023         { 0, 2, 3,  4, 102 }    /* WME_AC_VO */
1024 };
1025
1026 static const struct wmeParams iwi_wme_ofdm_params[WME_NUM_AC] = {
1027         { 0, 3, 4,  6,   0 },   /* WME_AC_BE */
1028         { 0, 3, 4, 10,   0 },   /* WME_AC_BK */
1029         { 0, 2, 3,  4,  94 },   /* WME_AC_VI */
1030         { 0, 2, 2,  3,  47 }    /* WME_AC_VO */
1031 };
1032 #define IWI_EXP2(v)     htole16((1 << (v)) - 1)
1033 #define IWI_USEC(v)     htole16(IEEE80211_TXOP_TO_US(v))
1034
1035 static void
1036 iwi_wme_init(struct iwi_softc *sc)
1037 {
1038         const struct wmeParams *wmep;
1039         int ac;
1040
1041         memset(sc->wme, 0, sizeof sc->wme);
1042         for (ac = 0; ac < WME_NUM_AC; ac++) {
1043                 /* set WME values for CCK modulation */
1044                 wmep = &iwi_wme_cck_params[ac];
1045                 sc->wme[1].aifsn[ac] = wmep->wmep_aifsn;
1046                 sc->wme[1].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1047                 sc->wme[1].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1048                 sc->wme[1].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1049                 sc->wme[1].acm[ac]   = wmep->wmep_acm;
1050
1051                 /* set WME values for OFDM modulation */
1052                 wmep = &iwi_wme_ofdm_params[ac];
1053                 sc->wme[2].aifsn[ac] = wmep->wmep_aifsn;
1054                 sc->wme[2].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1055                 sc->wme[2].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1056                 sc->wme[2].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1057                 sc->wme[2].acm[ac]   = wmep->wmep_acm;
1058         }
1059 }
1060
1061 static int
1062 iwi_wme_setparams(struct iwi_softc *sc, struct ieee80211com *ic)
1063 {
1064         const struct wmeParams *wmep;
1065         int ac;
1066
1067         for (ac = 0; ac < WME_NUM_AC; ac++) {
1068                 /* set WME values for current operating mode */
1069                 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac];
1070                 sc->wme[0].aifsn[ac] = wmep->wmep_aifsn;
1071                 sc->wme[0].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1072                 sc->wme[0].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1073                 sc->wme[0].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1074                 sc->wme[0].acm[ac]   = wmep->wmep_acm;
1075         }
1076
1077         DPRINTF(("Setting WME parameters\n"));
1078         return iwi_cmd(sc, IWI_CMD_SET_WME_PARAMS, sc->wme, sizeof sc->wme);
1079 }
1080 #undef IWI_USEC
1081 #undef IWI_EXP2
1082
1083 static void
1084 iwi_update_wme(void *arg, int npending)
1085 {
1086         struct ieee80211com *ic = arg;
1087         struct iwi_softc *sc = ic->ic_ifp->if_softc;
1088         IWI_LOCK_DECL;
1089
1090         IWI_LOCK(sc);
1091         (void) iwi_wme_setparams(sc, ic);
1092         IWI_UNLOCK(sc);
1093 }
1094
1095 static int
1096 iwi_wme_update(struct ieee80211com *ic)
1097 {
1098         struct iwi_softc *sc = ic->ic_ifp->if_softc;
1099         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1100
1101         /*
1102          * We may be called to update the WME parameters in
1103          * the adapter at various places.  If we're already
1104          * associated then initiate the request immediately;
1105          * otherwise we assume the params will get sent down
1106          * to the adapter as part of the work iwi_auth_and_assoc
1107          * does.
1108          */
1109         if (vap->iv_state == IEEE80211_S_RUN)
1110                 ieee80211_runtask(ic, &sc->sc_wmetask);
1111         return (0);
1112 }
1113
1114 static int
1115 iwi_wme_setie(struct iwi_softc *sc)
1116 {
1117         struct ieee80211_wme_info wme;
1118
1119         memset(&wme, 0, sizeof wme);
1120         wme.wme_id = IEEE80211_ELEMID_VENDOR;
1121         wme.wme_len = sizeof (struct ieee80211_wme_info) - 2;
1122         wme.wme_oui[0] = 0x00;
1123         wme.wme_oui[1] = 0x50;
1124         wme.wme_oui[2] = 0xf2;
1125         wme.wme_type = WME_OUI_TYPE;
1126         wme.wme_subtype = WME_INFO_OUI_SUBTYPE;
1127         wme.wme_version = WME_VERSION;
1128         wme.wme_info = 0;
1129
1130         DPRINTF(("Setting WME IE (len=%u)\n", wme.wme_len));
1131         return iwi_cmd(sc, IWI_CMD_SET_WMEIE, &wme, sizeof wme);
1132 }
1133
1134 /*
1135  * Read 16 bits at address 'addr' from the serial EEPROM.
1136  */
1137 static uint16_t
1138 iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr)
1139 {
1140         uint32_t tmp;
1141         uint16_t val;
1142         int n;
1143
1144         /* clock C once before the first command */
1145         IWI_EEPROM_CTL(sc, 0);
1146         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1147         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1148         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1149
1150         /* write start bit (1) */
1151         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1152         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1153
1154         /* write READ opcode (10) */
1155         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1156         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1157         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1158         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1159
1160         /* write address A7-A0 */
1161         for (n = 7; n >= 0; n--) {
1162                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1163                     (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D));
1164                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1165                     (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C);
1166         }
1167
1168         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1169
1170         /* read data Q15-Q0 */
1171         val = 0;
1172         for (n = 15; n >= 0; n--) {
1173                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1174                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1175                 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL);
1176                 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n;
1177         }
1178
1179         IWI_EEPROM_CTL(sc, 0);
1180
1181         /* clear Chip Select and clock C */
1182         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1183         IWI_EEPROM_CTL(sc, 0);
1184         IWI_EEPROM_CTL(sc, IWI_EEPROM_C);
1185
1186         return val;
1187 }
1188
1189 static void
1190 iwi_setcurchan(struct iwi_softc *sc, int chan)
1191 {
1192         struct ifnet *ifp = sc->sc_ifp;
1193         struct ieee80211com *ic = ifp->if_l2com;
1194
1195         sc->curchan = chan;
1196         ieee80211_radiotap_chan_change(ic);
1197 }
1198
1199 static void
1200 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i,
1201     struct iwi_frame *frame)
1202 {
1203         struct ifnet *ifp = sc->sc_ifp;
1204         struct ieee80211com *ic = ifp->if_l2com;
1205         struct mbuf *mnew, *m;
1206         struct ieee80211_node *ni;
1207         int type, error, framelen;
1208         int8_t rssi, nf;
1209         IWI_LOCK_DECL;
1210
1211         framelen = le16toh(frame->len);
1212         if (framelen < IEEE80211_MIN_LEN || framelen > MCLBYTES) {
1213                 /*
1214                  * XXX >MCLBYTES is bogus as it means the h/w dma'd
1215                  *     out of bounds; need to figure out how to limit
1216                  *     frame size in the firmware
1217                  */
1218                 /* XXX stat */
1219                 DPRINTFN(1,
1220                     ("drop rx frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1221                     le16toh(frame->len), frame->chan, frame->rssi,
1222                     frame->rssi_dbm));
1223                 return;
1224         }
1225
1226         DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1227             le16toh(frame->len), frame->chan, frame->rssi, frame->rssi_dbm));
1228
1229         if (frame->chan != sc->curchan)
1230                 iwi_setcurchan(sc, frame->chan);
1231
1232         /*
1233          * Try to allocate a new mbuf for this ring element and load it before
1234          * processing the current mbuf. If the ring element cannot be loaded,
1235          * drop the received packet and reuse the old mbuf. In the unlikely
1236          * case that the old mbuf can't be reloaded either, explicitly panic.
1237          */
1238         mnew = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
1239         if (mnew == NULL) {
1240                 ifp->if_ierrors++;
1241                 return;
1242         }
1243
1244         bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1245
1246         error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1247             mtod(mnew, void *), MCLBYTES, iwi_dma_map_addr, &data->physaddr,
1248             0);
1249         if (error != 0) {
1250                 m_freem(mnew);
1251
1252                 /* try to reload the old mbuf */
1253                 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1254                     mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
1255                     &data->physaddr, 0);
1256                 if (error != 0) {
1257                         /* very unlikely that it will fail... */
1258                         panic("%s: could not load old rx mbuf",
1259                             device_get_name(sc->sc_dev));
1260                 }
1261                 ifp->if_ierrors++;
1262                 return;
1263         }
1264
1265         /*
1266          * New mbuf successfully loaded, update Rx ring and continue
1267          * processing.
1268          */
1269         m = data->m;
1270         data->m = mnew;
1271         CSR_WRITE_4(sc, data->reg, data->physaddr);
1272
1273         /* finalize mbuf */
1274         m->m_pkthdr.rcvif = ifp;
1275         m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) +
1276             sizeof (struct iwi_frame) + framelen;
1277
1278         m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame));
1279
1280         rssi = frame->rssi_dbm;
1281         nf = -95;
1282         if (ieee80211_radiotap_active(ic)) {
1283                 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap;
1284
1285                 tap->wr_flags = 0;
1286                 tap->wr_antsignal = rssi;
1287                 tap->wr_antnoise = nf;
1288                 tap->wr_rate = iwi_cvtrate(frame->rate);
1289                 tap->wr_antenna = frame->antenna;
1290         }
1291         IWI_UNLOCK(sc);
1292
1293         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1294         if (ni != NULL) {
1295                 type = ieee80211_input(ni, m, rssi, nf);
1296                 ieee80211_free_node(ni);
1297         } else
1298                 type = ieee80211_input_all(ic, m, rssi, nf);
1299
1300         IWI_LOCK(sc);
1301         if (sc->sc_softled) {
1302                 /*
1303                  * Blink for any data frame.  Otherwise do a
1304                  * heartbeat-style blink when idle.  The latter
1305                  * is mainly for station mode where we depend on
1306                  * periodic beacon frames to trigger the poll event.
1307                  */
1308                 if (type == IEEE80211_FC0_TYPE_DATA) {
1309                         sc->sc_rxrate = frame->rate;
1310                         iwi_led_event(sc, IWI_LED_RX);
1311                 } else if (ticks - sc->sc_ledevent >= sc->sc_ledidle)
1312                         iwi_led_event(sc, IWI_LED_POLL);
1313         }
1314 }
1315
1316 /*
1317  * Check for an association response frame to see if QoS
1318  * has been negotiated.  We parse just enough to figure
1319  * out if we're supposed to use QoS.  The proper solution
1320  * is to pass the frame up so ieee80211_input can do the
1321  * work but that's made hard by how things currently are
1322  * done in the driver.
1323  */
1324 static void
1325 iwi_checkforqos(struct ieee80211vap *vap,
1326         const struct ieee80211_frame *wh, int len)
1327 {
1328 #define SUBTYPE(wh)     ((wh)->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
1329         const uint8_t *frm, *efrm, *wme;
1330         struct ieee80211_node *ni;
1331         uint16_t capinfo, status, associd;
1332
1333         /* NB: +8 for capinfo, status, associd, and first ie */
1334         if (!(sizeof(*wh)+8 < len && len < IEEE80211_MAX_LEN) ||
1335             SUBTYPE(wh) != IEEE80211_FC0_SUBTYPE_ASSOC_RESP)
1336                 return;
1337         /*
1338          * asresp frame format
1339          *      [2] capability information
1340          *      [2] status
1341          *      [2] association ID
1342          *      [tlv] supported rates
1343          *      [tlv] extended supported rates
1344          *      [tlv] WME
1345          */
1346         frm = (const uint8_t *)&wh[1];
1347         efrm = ((const uint8_t *) wh) + len;
1348
1349         capinfo = le16toh(*(const uint16_t *)frm);
1350         frm += 2;
1351         status = le16toh(*(const uint16_t *)frm);
1352         frm += 2;
1353         associd = le16toh(*(const uint16_t *)frm);
1354         frm += 2;
1355
1356         wme = NULL;
1357         while (frm < efrm) {
1358                 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1], return);
1359                 switch (*frm) {
1360                 case IEEE80211_ELEMID_VENDOR:
1361                         if (iswmeoui(frm))
1362                                 wme = frm;
1363                         break;
1364                 }
1365                 frm += frm[1] + 2;
1366         }
1367
1368         ni = vap->iv_bss;
1369         ni->ni_capinfo = capinfo;
1370         ni->ni_associd = associd;
1371         if (wme != NULL)
1372                 ni->ni_flags |= IEEE80211_NODE_QOS;
1373         else
1374                 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1375 #undef SUBTYPE
1376 }
1377
1378 /*
1379  * Task queue callbacks for iwi_notification_intr used to avoid LOR's.
1380  */
1381
1382 static void
1383 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif)
1384 {
1385         struct ifnet *ifp = sc->sc_ifp;
1386         struct ieee80211com *ic = ifp->if_l2com;
1387         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1388         struct iwi_notif_scan_channel *chan;
1389         struct iwi_notif_scan_complete *scan;
1390         struct iwi_notif_authentication *auth;
1391         struct iwi_notif_association *assoc;
1392         struct iwi_notif_beacon_state *beacon;
1393
1394         switch (notif->type) {
1395         case IWI_NOTIF_TYPE_SCAN_CHANNEL:
1396                 chan = (struct iwi_notif_scan_channel *)(notif + 1);
1397
1398                 DPRINTFN(3, ("Scan of channel %u complete (%u)\n",
1399                     ieee80211_ieee2mhz(chan->nchan, 0), chan->nchan));
1400
1401                 /* Reset the timer, the scan is still going */
1402                 sc->sc_state_timer = 3;
1403                 break;
1404
1405         case IWI_NOTIF_TYPE_SCAN_COMPLETE:
1406                 scan = (struct iwi_notif_scan_complete *)(notif + 1);
1407
1408                 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan,
1409                     scan->status));
1410
1411                 IWI_STATE_END(sc, IWI_FW_SCANNING);
1412
1413                 if (scan->status == IWI_SCAN_COMPLETED) {
1414                         /* NB: don't need to defer, net80211 does it for us */
1415                         ieee80211_scan_next(vap);
1416                 }
1417                 break;
1418
1419         case IWI_NOTIF_TYPE_AUTHENTICATION:
1420                 auth = (struct iwi_notif_authentication *)(notif + 1);
1421                 switch (auth->state) {
1422                 case IWI_AUTH_SUCCESS:
1423                         DPRINTFN(2, ("Authentication succeeeded\n"));
1424                         ieee80211_new_state(vap, IEEE80211_S_ASSOC, -1);
1425                         break;
1426                 case IWI_AUTH_FAIL:
1427                         /*
1428                          * These are delivered as an unsolicited deauth
1429                          * (e.g. due to inactivity) or in response to an
1430                          * associate request.
1431                          */
1432                         sc->flags &= ~IWI_FLAG_ASSOCIATED;
1433                         if (vap->iv_state != IEEE80211_S_RUN) {
1434                                 DPRINTFN(2, ("Authentication failed\n"));
1435                                 vap->iv_stats.is_rx_auth_fail++;
1436                                 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1437                         } else {
1438                                 DPRINTFN(2, ("Deauthenticated\n"));
1439                                 vap->iv_stats.is_rx_deauth++;
1440                         }
1441                         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1442                         break;
1443                 case IWI_AUTH_SENT_1:
1444                 case IWI_AUTH_RECV_2:
1445                 case IWI_AUTH_SEQ1_PASS:
1446                         break;
1447                 case IWI_AUTH_SEQ1_FAIL:
1448                         DPRINTFN(2, ("Initial authentication handshake failed; "
1449                                 "you probably need shared key\n"));
1450                         vap->iv_stats.is_rx_auth_fail++;
1451                         IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1452                         /* XXX retry shared key when in auto */
1453                         break;
1454                 default:
1455                         device_printf(sc->sc_dev,
1456                             "unknown authentication state %u\n", auth->state);
1457                         break;
1458                 }
1459                 break;
1460
1461         case IWI_NOTIF_TYPE_ASSOCIATION:
1462                 assoc = (struct iwi_notif_association *)(notif + 1);
1463                 switch (assoc->state) {
1464                 case IWI_AUTH_SUCCESS:
1465                         /* re-association, do nothing */
1466                         break;
1467                 case IWI_ASSOC_SUCCESS:
1468                         DPRINTFN(2, ("Association succeeded\n"));
1469                         sc->flags |= IWI_FLAG_ASSOCIATED;
1470                         IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1471                         iwi_checkforqos(vap,
1472                             (const struct ieee80211_frame *)(assoc+1),
1473                             le16toh(notif->len) - sizeof(*assoc));
1474                         ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
1475                         break;
1476                 case IWI_ASSOC_INIT:
1477                         sc->flags &= ~IWI_FLAG_ASSOCIATED;
1478                         switch (sc->fw_state) {
1479                         case IWI_FW_ASSOCIATING:
1480                                 DPRINTFN(2, ("Association failed\n"));
1481                                 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1482                                 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1483                                 break;
1484
1485                         case IWI_FW_DISASSOCIATING:
1486                                 DPRINTFN(2, ("Dissassociated\n"));
1487                                 IWI_STATE_END(sc, IWI_FW_DISASSOCIATING);
1488                                 vap->iv_stats.is_rx_disassoc++;
1489                                 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1490                                 break;
1491                         }
1492                         break;
1493                 default:
1494                         device_printf(sc->sc_dev,
1495                             "unknown association state %u\n", assoc->state);
1496                         break;
1497                 }
1498                 break;
1499
1500         case IWI_NOTIF_TYPE_BEACON:
1501                 /* XXX check struct length */
1502                 beacon = (struct iwi_notif_beacon_state *)(notif + 1);
1503
1504                 DPRINTFN(5, ("Beacon state (%u, %u)\n",
1505                     beacon->state, le32toh(beacon->number)));
1506
1507                 if (beacon->state == IWI_BEACON_MISS) {
1508                         /*
1509                          * The firmware notifies us of every beacon miss
1510                          * so we need to track the count against the
1511                          * configured threshold before notifying the
1512                          * 802.11 layer.
1513                          * XXX try to roam, drop assoc only on much higher count
1514                          */
1515                         if (le32toh(beacon->number) >= vap->iv_bmissthreshold) {
1516                                 DPRINTF(("Beacon miss: %u >= %u\n",
1517                                     le32toh(beacon->number),
1518                                     vap->iv_bmissthreshold));
1519                                 vap->iv_stats.is_beacon_miss++;
1520                                 /*
1521                                  * It's pointless to notify the 802.11 layer
1522                                  * as it'll try to send a probe request (which
1523                                  * we'll discard) and then timeout and drop us
1524                                  * into scan state.  Instead tell the firmware
1525                                  * to disassociate and then on completion we'll
1526                                  * kick the state machine to scan.
1527                                  */
1528                                 ieee80211_runtask(ic, &sc->sc_disassoctask);
1529                         }
1530                 }
1531                 break;
1532
1533         case IWI_NOTIF_TYPE_CALIBRATION:
1534         case IWI_NOTIF_TYPE_NOISE:
1535         case IWI_NOTIF_TYPE_LINK_QUALITY:
1536                 DPRINTFN(5, ("Notification (%u)\n", notif->type));
1537                 break;
1538
1539         default:
1540                 DPRINTF(("unknown notification type %u flags 0x%x len %u\n",
1541                     notif->type, notif->flags, le16toh(notif->len)));
1542                 break;
1543         }
1544 }
1545
1546 static void
1547 iwi_rx_intr(struct iwi_softc *sc)
1548 {
1549         struct iwi_rx_data *data;
1550         struct iwi_hdr *hdr;
1551         uint32_t hw;
1552
1553         hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX);
1554
1555         for (; sc->rxq.cur != hw;) {
1556                 data = &sc->rxq.data[sc->rxq.cur];
1557
1558                 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1559                     BUS_DMASYNC_POSTREAD);
1560
1561                 hdr = mtod(data->m, struct iwi_hdr *);
1562
1563                 switch (hdr->type) {
1564                 case IWI_HDR_TYPE_FRAME:
1565                         iwi_frame_intr(sc, data, sc->rxq.cur,
1566                             (struct iwi_frame *)(hdr + 1));
1567                         break;
1568
1569                 case IWI_HDR_TYPE_NOTIF:
1570                         iwi_notification_intr(sc,
1571                             (struct iwi_notif *)(hdr + 1));
1572                         break;
1573
1574                 default:
1575                         device_printf(sc->sc_dev, "unknown hdr type %u\n",
1576                             hdr->type);
1577                 }
1578
1579                 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1580
1581                 sc->rxq.cur = (sc->rxq.cur + 1) % IWI_RX_RING_COUNT;
1582         }
1583
1584         /* tell the firmware what we have processed */
1585         hw = (hw == 0) ? IWI_RX_RING_COUNT - 1 : hw - 1;
1586         CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw);
1587 }
1588
1589 static void
1590 iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq)
1591 {
1592         struct ifnet *ifp = sc->sc_ifp;
1593         struct iwi_tx_data *data;
1594         uint32_t hw;
1595
1596         hw = CSR_READ_4(sc, txq->csr_ridx);
1597
1598         for (; txq->next != hw;) {
1599                 data = &txq->data[txq->next];
1600
1601                 bus_dmamap_sync(txq->data_dmat, data->map,
1602                     BUS_DMASYNC_POSTWRITE);
1603                 bus_dmamap_unload(txq->data_dmat, data->map);
1604                 if (data->m->m_flags & M_TXCB)
1605                         ieee80211_process_callback(data->ni, data->m, 0/*XXX*/);
1606                 m_freem(data->m);
1607                 data->m = NULL;
1608                 ieee80211_free_node(data->ni);
1609                 data->ni = NULL;
1610
1611                 DPRINTFN(15, ("tx done idx=%u\n", txq->next));
1612
1613                 ifp->if_opackets++;
1614
1615                 txq->queued--;
1616                 txq->next = (txq->next + 1) % IWI_TX_RING_COUNT;
1617         }
1618
1619         sc->sc_tx_timer = 0;
1620         ifp->if_flags &= ~IFF_OACTIVE;
1621
1622         if (sc->sc_softled)
1623                 iwi_led_event(sc, IWI_LED_TX);
1624
1625         iwi_start_locked(ifp);
1626 }
1627
1628 static void
1629 iwi_fatal_error_intr(struct iwi_softc *sc)
1630 {
1631         struct ifnet *ifp = sc->sc_ifp;
1632         struct ieee80211com *ic = ifp->if_l2com;
1633         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1634
1635         device_printf(sc->sc_dev, "firmware error\n");
1636         if (vap != NULL)
1637                 ieee80211_cancel_scan(vap);
1638         ieee80211_runtask(ic, &sc->sc_restarttask);
1639
1640         sc->flags &= ~IWI_FLAG_BUSY;
1641         sc->sc_busy_timer = 0;
1642         wakeup(sc);
1643 }
1644
1645 static void
1646 iwi_radio_off_intr(struct iwi_softc *sc)
1647 {
1648         struct ifnet *ifp = sc->sc_ifp;
1649         struct ieee80211com *ic = ifp->if_l2com;
1650
1651         ieee80211_runtask(ic, &sc->sc_radiofftask);
1652 }
1653
1654 static void
1655 iwi_intr(void *arg)
1656 {
1657         struct iwi_softc *sc = arg;
1658         uint32_t r;
1659         IWI_LOCK_DECL;
1660
1661         IWI_LOCK(sc);
1662
1663         if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) {
1664                 IWI_UNLOCK(sc);
1665                 return;
1666         }
1667
1668         /* acknowledge interrupts */
1669         CSR_WRITE_4(sc, IWI_CSR_INTR, r);
1670
1671         if (r & IWI_INTR_FATAL_ERROR) {
1672                 iwi_fatal_error_intr(sc);
1673                 goto done;
1674         }
1675
1676         if (r & IWI_INTR_FW_INITED) {
1677                 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR)))
1678                         wakeup(sc);
1679         }
1680
1681         if (r & IWI_INTR_RADIO_OFF)
1682                 iwi_radio_off_intr(sc);
1683
1684         if (r & IWI_INTR_CMD_DONE) {
1685                 sc->flags &= ~IWI_FLAG_BUSY;
1686                 sc->sc_busy_timer = 0;
1687                 wakeup(sc);
1688         }
1689
1690         if (r & IWI_INTR_TX1_DONE)
1691                 iwi_tx_intr(sc, &sc->txq[0]);
1692
1693         if (r & IWI_INTR_TX2_DONE)
1694                 iwi_tx_intr(sc, &sc->txq[1]);
1695
1696         if (r & IWI_INTR_TX3_DONE)
1697                 iwi_tx_intr(sc, &sc->txq[2]);
1698
1699         if (r & IWI_INTR_TX4_DONE)
1700                 iwi_tx_intr(sc, &sc->txq[3]);
1701
1702         if (r & IWI_INTR_RX_DONE)
1703                 iwi_rx_intr(sc);
1704
1705         if (r & IWI_INTR_PARITY_ERROR) {
1706                 /* XXX rate-limit */
1707                 device_printf(sc->sc_dev, "parity error\n");
1708         }
1709 done:
1710         IWI_UNLOCK(sc);
1711 }
1712
1713 static int
1714 iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len)
1715 {
1716         struct iwi_cmd_desc *desc;
1717
1718         IWI_LOCK_ASSERT(sc);
1719
1720         if (sc->flags & IWI_FLAG_BUSY) {
1721                 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n",
1722                         __func__, type);
1723                 return EAGAIN;
1724         }
1725
1726         sc->flags |= IWI_FLAG_BUSY;
1727         sc->sc_busy_timer = 2;
1728
1729         desc = &sc->cmdq.desc[sc->cmdq.cur];
1730
1731         desc->hdr.type = IWI_HDR_TYPE_COMMAND;
1732         desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1733         desc->type = type;
1734         desc->len = len;
1735         memcpy(desc->data, data, len);
1736
1737         bus_dmamap_sync(sc->cmdq.desc_dmat, sc->cmdq.desc_map,
1738             BUS_DMASYNC_PREWRITE);
1739
1740         DPRINTFN(2, ("sending command idx=%u type=%u len=%u\n", sc->cmdq.cur,
1741             type, len));
1742
1743         sc->cmdq.cur = (sc->cmdq.cur + 1) % IWI_CMD_RING_COUNT;
1744         CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
1745
1746         return lksleep(sc, &sc->sc_lock, PINTERLOCKED, "iwicmd", hz);
1747 }
1748
1749 static void
1750 iwi_write_ibssnode(struct iwi_softc *sc,
1751         const u_int8_t addr[IEEE80211_ADDR_LEN], int entry)
1752 {
1753         struct iwi_ibssnode node;
1754
1755         /* write node information into NIC memory */
1756         memset(&node, 0, sizeof node);
1757         IEEE80211_ADDR_COPY(node.bssid, addr);
1758
1759         DPRINTF(("%s mac %6D station %u\n", __func__, node.bssid, ":", entry));
1760
1761         CSR_WRITE_REGION_1(sc,
1762             IWI_CSR_NODE_BASE + entry * sizeof node,
1763             (uint8_t *)&node, sizeof node);
1764 }
1765
1766 static int
1767 iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni,
1768     int ac)
1769 {
1770         struct iwi_softc *sc = ifp->if_softc;
1771         struct ieee80211vap *vap = ni->ni_vap;
1772         struct ieee80211com *ic = ni->ni_ic;
1773         struct iwi_node *in = (struct iwi_node *)ni;
1774         const struct ieee80211_frame *wh;
1775         struct ieee80211_key *k;
1776         const struct chanAccParams *cap;
1777         struct iwi_tx_ring *txq = &sc->txq[ac];
1778         struct iwi_tx_data *data;
1779         struct iwi_tx_desc *desc;
1780         struct mbuf *mnew;
1781         bus_dma_segment_t segs[IWI_MAX_NSEG];
1782         int error, nsegs, hdrlen, i;
1783         int ismcast, flags, xflags, staid;
1784
1785         IWI_LOCK_ASSERT(sc);
1786         wh = mtod(m0, const struct ieee80211_frame *);
1787         /* NB: only data frames use this path */
1788         hdrlen = ieee80211_hdrsize(wh);
1789         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
1790         flags = xflags = 0;
1791
1792         if (!ismcast)
1793                 flags |= IWI_DATA_FLAG_NEED_ACK;
1794         if (vap->iv_flags & IEEE80211_F_SHPREAMBLE)
1795                 flags |= IWI_DATA_FLAG_SHPREAMBLE;
1796         if (IEEE80211_QOS_HAS_SEQ(wh)) {
1797                 xflags |= IWI_DATA_XFLAG_QOS;
1798                 cap = &ic->ic_wme.wme_chanParams;
1799                 if (!cap->cap_wmeParams[ac].wmep_noackPolicy)
1800                         flags &= ~IWI_DATA_FLAG_NEED_ACK;
1801         }
1802
1803         /*
1804          * This is only used in IBSS mode where the firmware expect an index
1805          * in a h/w table instead of a destination address.
1806          */
1807         if (vap->iv_opmode == IEEE80211_M_IBSS) {
1808                 if (!ismcast) {
1809                         if (in->in_station == -1) {
1810                                 in->in_station = devfs_clone_bitmap_get(&sc->sc_unr,
1811                                         IWI_MAX_IBSSNODE-1);
1812                                 if (in->in_station == -1) {
1813                                         /* h/w table is full */
1814                                         m_freem(m0);
1815                                         ieee80211_free_node(ni);
1816                                         ifp->if_oerrors++;
1817                                         return 0;
1818                                 }
1819                                 iwi_write_ibssnode(sc,
1820                                         ni->ni_macaddr, in->in_station);
1821                         }
1822                         staid = in->in_station;
1823                 } else {
1824                         /*
1825                          * Multicast addresses have no associated node
1826                          * so there will be no station entry.  We reserve
1827                          * entry 0 for one mcast address and use that.
1828                          * If there are many being used this will be
1829                          * expensive and we'll need to do a better job
1830                          * but for now this handles the broadcast case.
1831                          */
1832                         if (!IEEE80211_ADDR_EQ(wh->i_addr1, sc->sc_mcast)) {
1833                                 IEEE80211_ADDR_COPY(sc->sc_mcast, wh->i_addr1);
1834                                 iwi_write_ibssnode(sc, sc->sc_mcast, 0);
1835                         }
1836                         staid = 0;
1837                 }
1838         } else
1839                 staid = 0;
1840
1841         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1842                 k = ieee80211_crypto_encap(ni, m0);
1843                 if (k == NULL) {
1844                         m_freem(m0);
1845                         return ENOBUFS;
1846                 }
1847
1848                 /* packet header may have moved, reset our local pointer */
1849                 wh = mtod(m0, struct ieee80211_frame *);
1850         }
1851
1852         if (ieee80211_radiotap_active_vap(vap)) {
1853                 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap;
1854
1855                 tap->wt_flags = 0;
1856
1857                 ieee80211_radiotap_tx(vap, m0);
1858         }
1859
1860         data = &txq->data[txq->cur];
1861         desc = &txq->desc[txq->cur];
1862
1863         /* save and trim IEEE802.11 header */
1864         m_copydata(m0, 0, hdrlen, (caddr_t)&desc->wh);
1865         m_adj(m0, hdrlen);
1866
1867         error = bus_dmamap_load_mbuf_segment(txq->data_dmat, data->map,
1868             m0, segs, 1, &nsegs, BUS_DMA_NOWAIT);
1869         if (error != 0 && error != EFBIG) {
1870                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1871                     error);
1872                 m_freem(m0);
1873                 return error;
1874         }
1875         if (error != 0) {
1876                 mnew = m_defrag(m0, MB_DONTWAIT);
1877                 if (mnew == NULL) {
1878                         device_printf(sc->sc_dev,
1879                             "could not defragment mbuf\n");
1880                         m_freem(m0);
1881                         return ENOBUFS;
1882                 }
1883                 m0 = mnew;
1884
1885                 error = bus_dmamap_load_mbuf_segment(txq->data_dmat,
1886                     data->map, m0, segs, 1, &nsegs, BUS_DMA_NOWAIT);
1887                 if (error != 0) {
1888                         device_printf(sc->sc_dev,
1889                             "could not map mbuf (error %d)\n", error);
1890                         m_freem(m0);
1891                         return error;
1892                 }
1893         }
1894
1895         data->m = m0;
1896         data->ni = ni;
1897
1898         desc->hdr.type = IWI_HDR_TYPE_DATA;
1899         desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1900         desc->station = staid;
1901         desc->cmd = IWI_DATA_CMD_TX;
1902         desc->len = htole16(m0->m_pkthdr.len);
1903         desc->flags = flags;
1904         desc->xflags = xflags;
1905
1906 #if 0
1907         if (vap->iv_flags & IEEE80211_F_PRIVACY)
1908                 desc->wep_txkey = vap->iv_def_txkey;
1909         else
1910 #endif
1911                 desc->flags |= IWI_DATA_FLAG_NO_WEP;
1912
1913         desc->nseg = htole32(nsegs);
1914         for (i = 0; i < nsegs; i++) {
1915                 desc->seg_addr[i] = htole32(segs[i].ds_addr);
1916                 desc->seg_len[i]  = htole16(segs[i].ds_len);
1917         }
1918
1919         bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1920         bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE);
1921
1922         DPRINTFN(5, ("sending data frame txq=%u idx=%u len=%u nseg=%u\n",
1923             ac, txq->cur, le16toh(desc->len), nsegs));
1924
1925         txq->queued++;
1926         txq->cur = (txq->cur + 1) % IWI_TX_RING_COUNT;
1927         CSR_WRITE_4(sc, txq->csr_widx, txq->cur);
1928
1929         return 0;
1930 }
1931
1932 static int
1933 iwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1934         const struct ieee80211_bpf_params *params)
1935 {
1936         /* no support; just discard */
1937         m_freem(m);
1938         ieee80211_free_node(ni);
1939         return 0;
1940 }
1941
1942 static void
1943 iwi_start_locked(struct ifnet *ifp)
1944 {
1945         struct iwi_softc *sc = ifp->if_softc;
1946         struct mbuf *m;
1947         struct ieee80211_node *ni;
1948         int ac;
1949
1950         IWI_LOCK_ASSERT(sc);
1951
1952         if ((ifp->if_flags & IFF_RUNNING) == 0)
1953                 return;
1954
1955         for (;;) {
1956                 IF_DEQUEUE(&ifp->if_snd, m);
1957                 if (m == NULL)
1958                         break;
1959                 ac = M_WME_GETAC(m);
1960                 if (sc->txq[ac].queued > IWI_TX_RING_COUNT - 8) {
1961                         /* there is no place left in this ring; tail drop */
1962                         /* XXX tail drop */
1963                         IF_PREPEND(&ifp->if_snd, m);
1964                         ifp->if_flags |= IFF_OACTIVE;
1965                         break;
1966                 }
1967
1968                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1969                 if (iwi_tx_start(ifp, m, ni, ac) != 0) {
1970                         ieee80211_free_node(ni);
1971                         ifp->if_oerrors++;
1972                         break;
1973                 }
1974
1975                 sc->sc_tx_timer = 5;
1976         }
1977 }
1978
1979 static void
1980 iwi_start(struct ifnet *ifp)
1981 {
1982         struct iwi_softc *sc = ifp->if_softc;
1983         IWI_LOCK_DECL;
1984
1985         IWI_LOCK(sc);
1986         iwi_start_locked(ifp);
1987         IWI_UNLOCK(sc);
1988 }
1989
1990 static void
1991 iwi_watchdog(void *arg)
1992 {
1993         struct iwi_softc *sc = arg;
1994         struct ifnet *ifp = sc->sc_ifp;
1995         struct ieee80211com *ic = ifp->if_l2com;
1996
1997         IWI_LOCK_ASSERT(sc);
1998
1999         if (sc->sc_tx_timer > 0) {
2000                 if (--sc->sc_tx_timer == 0) {
2001                         if_printf(ifp, "device timeout\n");
2002                         ifp->if_oerrors++;
2003                         ieee80211_runtask(ic, &sc->sc_restarttask);
2004                 }
2005         }
2006         if (sc->sc_state_timer > 0) {
2007                 if (--sc->sc_state_timer == 0) {
2008                         if_printf(ifp, "firmware stuck in state %d, resetting\n",
2009                             sc->fw_state);
2010                         if (sc->fw_state == IWI_FW_SCANNING) {
2011                                 struct ieee80211com *ic = ifp->if_l2com;
2012                                 ieee80211_cancel_scan(TAILQ_FIRST(&ic->ic_vaps));
2013                         }
2014                         ieee80211_runtask(ic, &sc->sc_restarttask);
2015                         sc->sc_state_timer = 3;
2016                 }
2017         }
2018         if (sc->sc_busy_timer > 0) {
2019                 if (--sc->sc_busy_timer == 0) {
2020                         if_printf(ifp, "firmware command timeout, resetting\n");
2021                         ieee80211_runtask(ic, &sc->sc_restarttask);
2022                 }
2023         }
2024         callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
2025 }
2026
2027 static int
2028 iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *ucred)
2029 {
2030         struct iwi_softc *sc = ifp->if_softc;
2031         struct ieee80211com *ic = ifp->if_l2com;
2032         struct ifreq *ifr = (struct ifreq *) data;
2033         int error = 0, startall = 0;
2034         IWI_LOCK_DECL;
2035
2036         switch (cmd) {
2037         case SIOCSIFFLAGS:
2038                 IWI_LOCK(sc);
2039                 if (ifp->if_flags & IFF_UP) {
2040                         if (!(ifp->if_flags & IFF_RUNNING)) {
2041                                 iwi_init_locked(sc);
2042                                 startall = 1;
2043                         }
2044                 } else {
2045                         if (ifp->if_flags & IFF_RUNNING)
2046                                 iwi_stop_locked(sc);
2047                 }
2048                 IWI_UNLOCK(sc);
2049                 if (startall)
2050                         ieee80211_start_all(ic);
2051                 break;
2052         case SIOCGIFMEDIA:
2053                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
2054                 break;
2055         case SIOCGIFADDR:
2056                 error = ether_ioctl(ifp, cmd, data);
2057                 break;
2058         default:
2059                 error = EINVAL;
2060                 break;
2061         }
2062         return error;
2063 }
2064
2065 static void
2066 iwi_stop_master(struct iwi_softc *sc)
2067 {
2068         uint32_t tmp;
2069         int ntries;
2070
2071         /* disable interrupts */
2072         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0);
2073
2074         CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER);
2075         for (ntries = 0; ntries < 5; ntries++) {
2076                 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2077                         break;
2078                 DELAY(10);
2079         }
2080         if (ntries == 5)
2081                 device_printf(sc->sc_dev, "timeout waiting for master\n");
2082
2083         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2084         CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_PRINCETON_RESET);
2085
2086         sc->flags &= ~IWI_FLAG_FW_INITED;
2087 }
2088
2089 static int
2090 iwi_reset(struct iwi_softc *sc)
2091 {
2092         uint32_t tmp;
2093         int i, ntries;
2094
2095         iwi_stop_master(sc);
2096
2097         tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2098         CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2099
2100         CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST);
2101
2102         /* wait for clock stabilization */
2103         for (ntries = 0; ntries < 1000; ntries++) {
2104                 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY)
2105                         break;
2106                 DELAY(200);
2107         }
2108         if (ntries == 1000) {
2109                 device_printf(sc->sc_dev,
2110                     "timeout waiting for clock stabilization\n");
2111                 return EIO;
2112         }
2113
2114         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2115         CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_SOFT_RESET);
2116
2117         DELAY(10);
2118
2119         tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2120         CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2121
2122         /* clear NIC memory */
2123         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0);
2124         for (i = 0; i < 0xc000; i++)
2125                 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2126
2127         return 0;
2128 }
2129
2130 static const struct iwi_firmware_ohdr *
2131 iwi_setup_ofw(struct iwi_softc *sc, struct iwi_fw *fw)
2132 {
2133         const struct firmware *fp = fw->fp;
2134         const struct iwi_firmware_ohdr *hdr;
2135
2136         if (fp->datasize < sizeof (struct iwi_firmware_ohdr)) {
2137                 device_printf(sc->sc_dev, "image '%s' too small\n", fp->name);
2138                 return NULL;
2139         }
2140         hdr = (const struct iwi_firmware_ohdr *)fp->data;
2141         if ((IWI_FW_GET_MAJOR(le32toh(hdr->version)) != IWI_FW_REQ_MAJOR) ||
2142             (IWI_FW_GET_MINOR(le32toh(hdr->version)) != IWI_FW_REQ_MINOR)) {
2143                 device_printf(sc->sc_dev, "version for '%s' %d.%d != %d.%d\n",
2144                     fp->name, IWI_FW_GET_MAJOR(le32toh(hdr->version)),
2145                     IWI_FW_GET_MINOR(le32toh(hdr->version)), IWI_FW_REQ_MAJOR,
2146                     IWI_FW_REQ_MINOR);
2147                 return NULL;
2148         }
2149         fw->data = ((const char *) fp->data) + sizeof(struct iwi_firmware_ohdr);
2150         fw->size = fp->datasize - sizeof(struct iwi_firmware_ohdr);
2151         fw->name = fp->name;
2152         return hdr;
2153 }
2154
2155 static const struct iwi_firmware_ohdr *
2156 iwi_setup_oucode(struct iwi_softc *sc, struct iwi_fw *fw)
2157 {
2158         const struct iwi_firmware_ohdr *hdr;
2159
2160         hdr = iwi_setup_ofw(sc, fw);
2161         if (hdr != NULL && le32toh(hdr->mode) != IWI_FW_MODE_UCODE) {
2162                 device_printf(sc->sc_dev, "%s is not a ucode image\n",
2163                     fw->name);
2164                 hdr = NULL;
2165         }
2166         return hdr;
2167 }
2168
2169 static void
2170 iwi_getfw(struct iwi_fw *fw, const char *fwname,
2171           struct iwi_fw *uc, const char *ucname)
2172 {
2173         if (fw->fp == NULL)
2174                 fw->fp = firmware_get(fwname);
2175
2176         /* NB: pre-3.0 ucode is packaged separately */
2177         if (uc->fp == NULL && fw->fp != NULL && fw->fp->version < 300)
2178                 uc->fp = firmware_get(ucname);
2179 }
2180
2181 /*
2182  * Get the required firmware images if not already loaded.
2183  * Note that we hold firmware images so long as the device
2184  * is marked up in case we need to reload them on device init.
2185  * This is necessary because we re-init the device sometimes
2186  * from a context where we cannot read from the filesystem
2187  * (e.g. from the taskqueue thread when rfkill is re-enabled).
2188  * XXX return 0 on success, 1 on error.
2189  *
2190  * NB: the order of get'ing and put'ing images here is
2191  * intentional to support handling firmware images bundled
2192  * by operating mode and/or all together in one file with
2193  * the boot firmware as "master".
2194  */
2195 static int
2196 iwi_get_firmware(struct iwi_softc *sc, enum ieee80211_opmode opmode)
2197 {
2198         const struct iwi_firmware_hdr *hdr;
2199         const struct firmware *fp;
2200
2201         /* invalidate cached firmware on mode change */
2202         if (sc->fw_mode != opmode)
2203                 iwi_put_firmware(sc);
2204
2205         switch (opmode) {
2206         case IEEE80211_M_STA:
2207                 iwi_getfw(&sc->fw_fw, "iwi_bss", &sc->fw_uc, "iwi_ucode_bss");
2208                 break;
2209         case IEEE80211_M_IBSS:
2210                 iwi_getfw(&sc->fw_fw, "iwi_ibss", &sc->fw_uc, "iwi_ucode_ibss");
2211                 break;
2212         case IEEE80211_M_MONITOR:
2213                 iwi_getfw(&sc->fw_fw, "iwi_monitor",
2214                           &sc->fw_uc, "iwi_ucode_monitor");
2215                 break;
2216         default:
2217                 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode);
2218                 return EINVAL;
2219         }
2220         fp = sc->fw_fw.fp;
2221         if (fp == NULL) {
2222                 device_printf(sc->sc_dev, "could not load firmware\n");
2223                 goto bad;
2224         }
2225         if (fp->version < 300) {
2226                 /*
2227                  * Firmware prior to 3.0 was packaged as separate
2228                  * boot, firmware, and ucode images.  Verify the
2229                  * ucode image was read in, retrieve the boot image
2230                  * if needed, and check version stamps for consistency.
2231                  * The version stamps in the data are also checked
2232                  * above; this is a bit paranoid but is a cheap
2233                  * safeguard against mis-packaging.
2234                  */
2235                 if (sc->fw_uc.fp == NULL) {
2236                         device_printf(sc->sc_dev, "could not load ucode\n");
2237                         goto bad;
2238                 }
2239                 if (sc->fw_boot.fp == NULL) {
2240                         sc->fw_boot.fp = firmware_get("iwi_boot");
2241                         if (sc->fw_boot.fp == NULL) {
2242                                 device_printf(sc->sc_dev,
2243                                         "could not load boot firmware\n");
2244                                 goto bad;
2245                         }
2246                 }
2247                 if (sc->fw_boot.fp->version != sc->fw_fw.fp->version ||
2248                     sc->fw_boot.fp->version != sc->fw_uc.fp->version) {
2249                         device_printf(sc->sc_dev,
2250                             "firmware version mismatch: "
2251                             "'%s' is %d, '%s' is %d, '%s' is %d\n",
2252                             sc->fw_boot.fp->name, sc->fw_boot.fp->version,
2253                             sc->fw_uc.fp->name, sc->fw_uc.fp->version,
2254                             sc->fw_fw.fp->name, sc->fw_fw.fp->version
2255                         );
2256                         goto bad;
2257                 }
2258                 /*
2259                  * Check and setup each image.
2260                  */
2261                 if (iwi_setup_oucode(sc, &sc->fw_uc) == NULL ||
2262                     iwi_setup_ofw(sc, &sc->fw_boot) == NULL ||
2263                     iwi_setup_ofw(sc, &sc->fw_fw) == NULL)
2264                         goto bad;
2265         } else {
2266                 /*
2267                  * Check and setup combined image.
2268                  */
2269                 if (fp->datasize < sizeof(struct iwi_firmware_hdr)) {
2270                         device_printf(sc->sc_dev, "image '%s' too small\n",
2271                             fp->name);
2272                         goto bad;
2273                 }
2274                 hdr = (const struct iwi_firmware_hdr *)fp->data;
2275                 if (fp->datasize < sizeof(*hdr) + le32toh(hdr->bsize) + le32toh(hdr->usize)
2276                                 + le32toh(hdr->fsize)) {
2277                         device_printf(sc->sc_dev, "image '%s' too small (2)\n",
2278                             fp->name);
2279                         goto bad;
2280                 }
2281                 sc->fw_boot.data = ((const char *) fp->data) + sizeof(*hdr);
2282                 sc->fw_boot.size = le32toh(hdr->bsize);
2283                 sc->fw_boot.name = fp->name;
2284                 sc->fw_uc.data = sc->fw_boot.data + sc->fw_boot.size;
2285                 sc->fw_uc.size = le32toh(hdr->usize);
2286                 sc->fw_uc.name = fp->name;
2287                 sc->fw_fw.data = sc->fw_uc.data + sc->fw_uc.size;
2288                 sc->fw_fw.size = le32toh(hdr->fsize);
2289                 sc->fw_fw.name = fp->name;
2290         }
2291 #if 0
2292         device_printf(sc->sc_dev, "boot %d ucode %d fw %d bytes\n",
2293                 sc->fw_boot.size, sc->fw_uc.size, sc->fw_fw.size);
2294 #endif
2295
2296         sc->fw_mode = opmode;
2297         return 0;
2298 bad:
2299         iwi_put_firmware(sc);
2300         return 1;
2301 }
2302
2303 static void
2304 iwi_put_fw(struct iwi_fw *fw)
2305 {
2306         if (fw->fp != NULL) {
2307                 firmware_put(fw->fp, FIRMWARE_UNLOAD);
2308                 fw->fp = NULL;
2309         }
2310         fw->data = NULL;
2311         fw->size = 0;
2312         fw->name = NULL;
2313 }
2314
2315 /*
2316  * Release any cached firmware images.
2317  */
2318 static void
2319 iwi_put_firmware(struct iwi_softc *sc)
2320 {
2321         iwi_put_fw(&sc->fw_uc);
2322         iwi_put_fw(&sc->fw_fw);
2323         iwi_put_fw(&sc->fw_boot);
2324 }
2325
2326 static int
2327 iwi_load_ucode(struct iwi_softc *sc, const struct iwi_fw *fw)
2328 {
2329         uint32_t tmp;
2330         const uint16_t *w;
2331         const char *uc = fw->data;
2332         size_t size = fw->size;
2333         int i, ntries, error;
2334
2335         IWI_LOCK_ASSERT(sc);
2336         error = 0;
2337         CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) |
2338             IWI_RST_STOP_MASTER);
2339         for (ntries = 0; ntries < 5; ntries++) {
2340                 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2341                         break;
2342                 DELAY(10);
2343         }
2344         if (ntries == 5) {
2345                 device_printf(sc->sc_dev, "timeout waiting for master\n");
2346                 error = EIO;
2347                 goto fail;
2348         }
2349
2350         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
2351         DELAY(5000);
2352
2353         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2354         tmp &= ~IWI_RST_PRINCETON_RESET;
2355         CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2356
2357         DELAY(5000);
2358         MEM_WRITE_4(sc, 0x3000e0, 0);
2359         DELAY(1000);
2360         MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 1);
2361         DELAY(1000);
2362         MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 0);
2363         DELAY(1000);
2364         MEM_WRITE_1(sc, 0x200000, 0x00);
2365         MEM_WRITE_1(sc, 0x200000, 0x40);
2366         DELAY(1000);
2367
2368         /* write microcode into adapter memory */
2369         for (w = (const uint16_t *)uc; size > 0; w++, size -= 2)
2370                 MEM_WRITE_2(sc, 0x200010, htole16(*w));
2371
2372         MEM_WRITE_1(sc, 0x200000, 0x00);
2373         MEM_WRITE_1(sc, 0x200000, 0x80);
2374
2375         /* wait until we get an answer */
2376         for (ntries = 0; ntries < 100; ntries++) {
2377                 if (MEM_READ_1(sc, 0x200000) & 1)
2378                         break;
2379                 DELAY(100);
2380         }
2381         if (ntries == 100) {
2382                 device_printf(sc->sc_dev,
2383                     "timeout waiting for ucode to initialize\n");
2384                 error = EIO;
2385                 goto fail;
2386         }
2387
2388         /* read the answer or the firmware will not initialize properly */
2389         for (i = 0; i < 7; i++)
2390                 MEM_READ_4(sc, 0x200004);
2391
2392         MEM_WRITE_1(sc, 0x200000, 0x00);
2393
2394 fail:
2395         return error;
2396 }
2397
2398 /* macro to handle unaligned little endian data in firmware image */
2399 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2400
2401 static int
2402 iwi_load_firmware(struct iwi_softc *sc, const struct iwi_fw *fw)
2403 {
2404         u_char *p, *end;
2405         uint32_t sentinel, ctl, src, dst, sum, len, mlen, tmp;
2406         int ntries, error;
2407
2408         IWI_LOCK_ASSERT(sc);
2409
2410         /* copy firmware image to DMA memory */
2411         memcpy(sc->fw_virtaddr, fw->data, fw->size);
2412
2413         /* make sure the adapter will get up-to-date values */
2414         bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_PREWRITE);
2415
2416         /* tell the adapter where the command blocks are stored */
2417         MEM_WRITE_4(sc, 0x3000a0, 0x27000);
2418
2419         /*
2420          * Store command blocks into adapter's internal memory using register
2421          * indirections. The adapter will read the firmware image through DMA
2422          * using information stored in command blocks.
2423          */
2424         src = sc->fw_physaddr;
2425         p = sc->fw_virtaddr;
2426         end = p + fw->size;
2427         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000);
2428
2429         while (p < end) {
2430                 dst = GETLE32(p); p += 4; src += 4;
2431                 len = GETLE32(p); p += 4; src += 4;
2432                 p += len;
2433
2434                 while (len > 0) {
2435                         mlen = min(len, IWI_CB_MAXDATALEN);
2436
2437                         ctl = IWI_CB_DEFAULT_CTL | mlen;
2438                         sum = ctl ^ src ^ dst;
2439
2440                         /* write a command block */
2441                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl);
2442                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src);
2443                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst);
2444                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum);
2445
2446                         src += mlen;
2447                         dst += mlen;
2448                         len -= mlen;
2449                 }
2450         }
2451
2452         /* write a fictive final command block (sentinel) */
2453         sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR);
2454         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2455
2456         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2457         tmp &= ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER);
2458         CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2459
2460         /* tell the adapter to start processing command blocks */
2461         MEM_WRITE_4(sc, 0x3000a4, 0x540100);
2462
2463         /* wait until the adapter reaches the sentinel */
2464         for (ntries = 0; ntries < 400; ntries++) {
2465                 if (MEM_READ_4(sc, 0x3000d0) >= sentinel)
2466                         break;
2467                 DELAY(100);
2468         }
2469         /* sync dma, just in case */
2470         bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_POSTWRITE);
2471         if (ntries == 400) {
2472                 device_printf(sc->sc_dev,
2473                     "timeout processing command blocks for %s firmware\n",
2474                     fw->name);
2475                 return EIO;
2476         }
2477
2478         /* we're done with command blocks processing */
2479         MEM_WRITE_4(sc, 0x3000a4, 0x540c00);
2480
2481         /* allow interrupts so we know when the firmware is ready */
2482         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK);
2483
2484         /* tell the adapter to initialize the firmware */
2485         CSR_WRITE_4(sc, IWI_CSR_RST, 0);
2486
2487         tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2488         CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_ALLOW_STANDBY);
2489
2490         /* wait at most one second for firmware initialization to complete */
2491         error = lksleep(sc, &sc->sc_lock, PINTERLOCKED, "iwiinit", hz);
2492         if (error != 0) {
2493                 device_printf(sc->sc_dev, "timeout waiting for firmware "
2494                             "initialization to complete\n");
2495         }
2496
2497         return error;
2498 }
2499
2500 static int
2501 iwi_setpowermode(struct iwi_softc *sc, struct ieee80211vap *vap)
2502 {
2503         uint32_t data;
2504
2505         if (vap->iv_flags & IEEE80211_F_PMGTON) {
2506                 /* XXX set more fine-grained operation */
2507                 data = htole32(IWI_POWER_MODE_MAX);
2508         } else
2509                 data = htole32(IWI_POWER_MODE_CAM);
2510
2511         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2512         return iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data);
2513 }
2514
2515 static int
2516 iwi_setwepkeys(struct iwi_softc *sc, struct ieee80211vap *vap)
2517 {
2518         struct iwi_wep_key wepkey;
2519         struct ieee80211_key *wk;
2520         int error, i;
2521
2522         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2523                 wk = &vap->iv_nw_keys[i];
2524
2525                 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY;
2526                 wepkey.idx = i;
2527                 wepkey.len = wk->wk_keylen;
2528                 memset(wepkey.key, 0, sizeof wepkey.key);
2529                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2530                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2531                     wepkey.len));
2532                 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey,
2533                     sizeof wepkey);
2534                 if (error != 0)
2535                         return error;
2536         }
2537         return 0;
2538 }
2539
2540 static int
2541 iwi_config(struct iwi_softc *sc)
2542 {
2543         struct ifnet *ifp = sc->sc_ifp;
2544         struct ieee80211com *ic = ifp->if_l2com;
2545         struct iwi_configuration config;
2546         struct iwi_rateset rs;
2547         struct iwi_txpower power;
2548         uint32_t data;
2549         int error, i;
2550         const uint8_t *eaddr = IF_LLADDR(ifp);
2551
2552         IWI_LOCK_ASSERT(sc);
2553
2554         DPRINTF(("Setting MAC address to %6D\n", eaddr, ":"));
2555         error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, IF_LLADDR(ifp),
2556             IEEE80211_ADDR_LEN);
2557         if (error != 0)
2558                 return error;
2559
2560         memset(&config, 0, sizeof config);
2561         config.bluetooth_coexistence = sc->bluetooth;
2562         config.silence_threshold = 0x1e;
2563         config.antenna = sc->antenna;
2564         config.multicast_enabled = 1;
2565         config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2566         config.disable_unicast_decryption = 1;
2567         config.disable_multicast_decryption = 1;
2568         DPRINTF(("Configuring adapter\n"));
2569         error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2570         if (error != 0)
2571                 return error;
2572         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2573                 power.mode = IWI_MODE_11B;
2574                 power.nchan = 11;
2575                 for (i = 0; i < 11; i++) {
2576                         power.chan[i].chan = i + 1;
2577                         power.chan[i].power = IWI_TXPOWER_MAX;
2578                 }
2579                 DPRINTF(("Setting .11b channels tx power\n"));
2580                 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2581                 if (error != 0)
2582                         return error;
2583
2584                 power.mode = IWI_MODE_11G;
2585                 DPRINTF(("Setting .11g channels tx power\n"));
2586                 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2587                 if (error != 0)
2588                         return error;
2589         }
2590
2591         memset(&rs, 0, sizeof rs);
2592         rs.mode = IWI_MODE_11G;
2593         rs.type = IWI_RATESET_TYPE_SUPPORTED;
2594         rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates;
2595         memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates,
2596             rs.nrates);
2597         DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates));
2598         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2599         if (error != 0)
2600                 return error;
2601
2602         memset(&rs, 0, sizeof rs);
2603         rs.mode = IWI_MODE_11A;
2604         rs.type = IWI_RATESET_TYPE_SUPPORTED;
2605         rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates;
2606         memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates,
2607             rs.nrates);
2608         DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates));
2609         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2610         if (error != 0)
2611                 return error;
2612
2613         data = htole32(karc4random());
2614         DPRINTF(("Setting initialization vector to %u\n", le32toh(data)));
2615         error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data);
2616         if (error != 0)
2617                 return error;
2618
2619         /* enable adapter */
2620         DPRINTF(("Enabling adapter\n"));
2621         return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0);
2622 }
2623
2624 static __inline void
2625 set_scan_type(struct iwi_scan_ext *scan, int ix, int scan_type)
2626 {
2627         uint8_t *st = &scan->scan_type[ix / 2];
2628         if (ix % 2)
2629                 *st = (*st & 0xf0) | ((scan_type & 0xf) << 0);
2630         else
2631                 *st = (*st & 0x0f) | ((scan_type & 0xf) << 4);
2632 }
2633
2634 static int
2635 scan_type(const struct ieee80211_scan_state *ss,
2636         const struct ieee80211_channel *chan)
2637 {
2638         /* We can only set one essid for a directed scan */
2639         if (ss->ss_nssid != 0)
2640                 return IWI_SCAN_TYPE_BDIRECTED;
2641         if ((ss->ss_flags & IEEE80211_SCAN_ACTIVE) &&
2642             (chan->ic_flags & IEEE80211_CHAN_PASSIVE) == 0)
2643                 return IWI_SCAN_TYPE_BROADCAST;
2644         return IWI_SCAN_TYPE_PASSIVE;
2645 }
2646
2647 static __inline int
2648 scan_band(const struct ieee80211_channel *c)
2649 {
2650         return IEEE80211_IS_CHAN_5GHZ(c) ?  IWI_CHAN_5GHZ : IWI_CHAN_2GHZ;
2651 }
2652
2653 /*
2654  * Start a scan on the current channel or all channels.
2655  */
2656 static int
2657 iwi_scanchan(struct iwi_softc *sc, unsigned long maxdwell, int allchan)
2658 {
2659         struct ieee80211com *ic;
2660         struct ieee80211_channel *chan;
2661         struct ieee80211_scan_state *ss;
2662         struct iwi_scan_ext scan;
2663         int error = 0;
2664
2665         IWI_LOCK_ASSERT(sc);
2666         if (sc->fw_state == IWI_FW_SCANNING) {
2667                 /*
2668                  * This should not happen as we only trigger scan_next after
2669                  * completion
2670                  */
2671                 DPRINTF(("%s: called too early - still scanning\n", __func__));
2672                 return (EBUSY);
2673         }
2674         IWI_STATE_BEGIN(sc, IWI_FW_SCANNING);
2675
2676         ic = sc->sc_ifp->if_l2com;
2677         ss = ic->ic_scan;
2678
2679         memset(&scan, 0, sizeof scan);
2680         scan.full_scan_index = htole32(++sc->sc_scangen);
2681         scan.dwell_time[IWI_SCAN_TYPE_PASSIVE] = htole16(maxdwell);
2682         if (ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) {
2683                 /*
2684                  * Use very short dwell times for when we send probe request
2685                  * frames.  Without this bg scans hang.  Ideally this should
2686                  * be handled with early-termination as done by net80211 but
2687                  * that's not feasible (aborting a scan is problematic).
2688                  */
2689                 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(30);
2690                 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(30);
2691         } else {
2692                 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(maxdwell);
2693                 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(maxdwell);
2694         }
2695
2696         /* We can only set one essid for a directed scan */
2697         if (ss->ss_nssid != 0) {
2698                 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ss->ss_ssid[0].ssid,
2699                     ss->ss_ssid[0].len);
2700                 if (error)
2701                         return (error);
2702         }
2703
2704         if (allchan) {
2705                 int i, next, band, b, bstart;
2706                 /*
2707                  * Convert scan list to run-length encoded channel list
2708                  * the firmware requires (preserving the order setup by
2709                  * net80211).  The first entry in each run specifies the
2710                  * band and the count of items in the run.
2711                  */
2712                 next = 0;               /* next open slot */
2713                 bstart = 0;             /* NB: not needed, silence compiler */
2714                 band = -1;              /* NB: impossible value */
2715                 KASSERT(ss->ss_last > 0, ("no channels"));
2716                 for (i = 0; i < ss->ss_last; i++) {
2717                         chan = ss->ss_chans[i];
2718                         b = scan_band(chan);
2719                         if (b != band) {
2720                                 if (band != -1)
2721                                         scan.channels[bstart] =
2722                                             (next - bstart) | band;
2723                                 /* NB: this allocates a slot for the run-len */
2724                                 band = b, bstart = next++;
2725                         }
2726                         if (next >= IWI_SCAN_CHANNELS) {
2727                                 DPRINTF(("truncating scan list\n"));
2728                                 break;
2729                         }
2730                         scan.channels[next] = ieee80211_chan2ieee(ic, chan);
2731                         set_scan_type(&scan, next, scan_type(ss, chan));
2732                         next++;
2733                 }
2734                 scan.channels[bstart] = (next - bstart) | band;
2735         } else {
2736                 /* Scan the current channel only */
2737                 chan = ic->ic_curchan;
2738                 scan.channels[0] = 1 | scan_band(chan);
2739                 scan.channels[1] = ieee80211_chan2ieee(ic, chan);
2740                 set_scan_type(&scan, 1, scan_type(ss, chan));
2741         }
2742 #ifdef IWI_DEBUG
2743         if (iwi_debug > 0) {
2744                 static const char *scantype[8] =
2745                    { "PSTOP", "PASV", "DIR", "BCAST", "BDIR", "5", "6", "7" };
2746                 int i;
2747                 kprintf("Scan request: index %u dwell %d/%d/%d\n"
2748                     , le32toh(scan.full_scan_index)
2749                     , le16toh(scan.dwell_time[IWI_SCAN_TYPE_PASSIVE])
2750                     , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BROADCAST])
2751                     , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED])
2752                 );
2753                 i = 0;
2754                 do {
2755                         int run = scan.channels[i];
2756                         if (run == 0)
2757                                 break;
2758                         kprintf("Scan %d %s channels:", run & 0x3f,
2759                             run & IWI_CHAN_2GHZ ? "2.4GHz" : "5GHz");
2760                         for (run &= 0x3f, i++; run > 0; run--, i++) {
2761                                 uint8_t type = scan.scan_type[i/2];
2762                                 kprintf(" %u/%s", scan.channels[i],
2763                                     scantype[(i & 1 ? type : type>>4) & 7]);
2764                         }
2765                         kprintf("\n");
2766                 } while (i < IWI_SCAN_CHANNELS);
2767         }
2768 #endif
2769
2770         return (iwi_cmd(sc, IWI_CMD_SCAN_EXT, &scan, sizeof scan));
2771 }
2772
2773 static int
2774 iwi_set_sensitivity(struct iwi_softc *sc, int8_t rssi_dbm)
2775 {
2776         struct iwi_sensitivity sens;
2777
2778         DPRINTF(("Setting sensitivity to %d\n", rssi_dbm));
2779
2780         memset(&sens, 0, sizeof sens);
2781         sens.rssi = htole16(rssi_dbm);
2782         return iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &sens, sizeof sens);
2783 }
2784
2785 static int
2786 iwi_auth_and_assoc(struct iwi_softc *sc, struct ieee80211vap *vap)
2787 {
2788         struct ieee80211com *ic = vap->iv_ic;
2789         struct ifnet *ifp = vap->iv_ifp;
2790         struct ieee80211_node *ni = vap->iv_bss;
2791         struct iwi_configuration config;
2792         struct iwi_associate *assoc = &sc->assoc;
2793         struct iwi_rateset rs;
2794         uint16_t capinfo;
2795         uint32_t data;
2796         int error, mode;
2797
2798         IWI_LOCK_ASSERT(sc);
2799
2800         if (sc->flags & IWI_FLAG_ASSOCIATED) {
2801                 DPRINTF(("Already associated\n"));
2802                 return (-1);
2803         }
2804
2805         IWI_STATE_BEGIN(sc, IWI_FW_ASSOCIATING);
2806         error = 0;
2807         mode = 0;
2808
2809         if (IEEE80211_IS_CHAN_A(ic->ic_curchan))
2810                 mode = IWI_MODE_11A;
2811         else if (IEEE80211_IS_CHAN_G(ic->ic_curchan))
2812                 mode = IWI_MODE_11G;
2813         if (IEEE80211_IS_CHAN_B(ic->ic_curchan))
2814                 mode = IWI_MODE_11B;
2815
2816         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2817                 memset(&config, 0, sizeof config);
2818                 config.bluetooth_coexistence = sc->bluetooth;
2819                 config.antenna = sc->antenna;
2820                 config.multicast_enabled = 1;
2821                 if (mode == IWI_MODE_11G)
2822                         config.use_protection = 1;
2823                 config.answer_pbreq =
2824                     (vap->iv_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2825                 config.disable_unicast_decryption = 1;
2826                 config.disable_multicast_decryption = 1;
2827                 DPRINTF(("Configuring adapter\n"));
2828                 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2829                 if (error != 0)
2830                         goto done;
2831         }
2832
2833 #ifdef IWI_DEBUG
2834         if (iwi_debug > 0) {
2835                 kprintf("Setting ESSID to ");
2836                 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
2837                 kprintf("\n");
2838         }
2839 #endif
2840         error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen);
2841         if (error != 0)
2842                 goto done;
2843
2844         error = iwi_setpowermode(sc, vap);
2845         if (error != 0)
2846                 goto done;
2847
2848         data = htole32(vap->iv_rtsthreshold);
2849         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2850         error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2851         if (error != 0)
2852                 goto done;
2853
2854         data = htole32(vap->iv_fragthreshold);
2855         DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data)));
2856         error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2857         if (error != 0)
2858                 goto done;
2859
2860         /* the rate set has already been "negotiated" */
2861         memset(&rs, 0, sizeof rs);
2862         rs.mode = mode;
2863         rs.type = IWI_RATESET_TYPE_NEGOTIATED;
2864         rs.nrates = ni->ni_rates.rs_nrates;
2865         if (rs.nrates > IWI_RATESET_SIZE) {
2866                 DPRINTF(("Truncating negotiated rate set from %u\n",
2867                     rs.nrates));
2868                 rs.nrates = IWI_RATESET_SIZE;
2869         }
2870         memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates);
2871         DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates));
2872         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2873         if (error != 0)
2874                 goto done;
2875
2876         memset(assoc, 0, sizeof *assoc);
2877
2878         if ((vap->iv_flags & IEEE80211_F_WME) && ni->ni_ies.wme_ie != NULL) {
2879                 /* NB: don't treat WME setup as failure */
2880                 if (iwi_wme_setparams(sc, ic) == 0 && iwi_wme_setie(sc) == 0)
2881                         assoc->policy |= htole16(IWI_POLICY_WME);
2882                 /* XXX complain on failure? */
2883         }
2884
2885         if (vap->iv_appie_wpa != NULL) {
2886                 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2887
2888                 DPRINTF(("Setting optional IE (len=%u)\n", ie->ie_len));
2889                 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ie->ie_data, ie->ie_len);
2890                 if (error != 0)
2891                         goto done;
2892         }
2893
2894         error = iwi_set_sensitivity(sc, ic->ic_node_getrssi(ni));
2895         if (error != 0)
2896                 goto done;
2897
2898         assoc->mode = mode;
2899         assoc->chan = ic->ic_curchan->ic_ieee;
2900         /*
2901          * NB: do not arrange for shared key auth w/o privacy
2902          *     (i.e. a wep key); it causes a firmware error.
2903          */
2904         if ((vap->iv_flags & IEEE80211_F_PRIVACY) &&
2905             ni->ni_authmode == IEEE80211_AUTH_SHARED) {
2906                 assoc->auth = IWI_AUTH_SHARED;
2907                 /*
2908                  * It's possible to have privacy marked but no default
2909                  * key setup.  This typically is due to a user app bug
2910                  * but if we blindly grab the key the firmware will
2911                  * barf so avoid it for now.
2912                  */
2913                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE)
2914                         assoc->auth |= vap->iv_def_txkey << 4;
2915
2916                 error = iwi_setwepkeys(sc, vap);
2917                 if (error != 0)
2918                         goto done;
2919         }
2920         if (vap->iv_flags & IEEE80211_F_WPA)
2921                 assoc->policy |= htole16(IWI_POLICY_WPA);
2922         if (vap->iv_opmode == IEEE80211_M_IBSS && ni->ni_tstamp.tsf == 0)
2923                 assoc->type = IWI_HC_IBSS_START;
2924         else
2925                 assoc->type = IWI_HC_ASSOC;
2926         memcpy(assoc->tstamp, ni->ni_tstamp.data, 8);
2927
2928         if (vap->iv_opmode == IEEE80211_M_IBSS)
2929                 capinfo = IEEE80211_CAPINFO_IBSS;
2930         else
2931                 capinfo = IEEE80211_CAPINFO_ESS;
2932         if (vap->iv_flags & IEEE80211_F_PRIVACY)
2933                 capinfo |= IEEE80211_CAPINFO_PRIVACY;
2934         if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
2935             IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
2936                 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
2937         if (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)
2938                 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME;
2939         assoc->capinfo = htole16(capinfo);
2940
2941         assoc->lintval = htole16(ic->ic_lintval);
2942         assoc->intval = htole16(ni->ni_intval);
2943         IEEE80211_ADDR_COPY(assoc->bssid, ni->ni_bssid);
2944         if (vap->iv_opmode == IEEE80211_M_IBSS)
2945                 IEEE80211_ADDR_COPY(assoc->dst, ifp->if_broadcastaddr);
2946         else
2947                 IEEE80211_ADDR_COPY(assoc->dst, ni->ni_bssid);
2948
2949         DPRINTF(("%s bssid %6D dst %6D channel %u policy 0x%x "
2950             "auth %u capinfo 0x%x lintval %u bintval %u\n",
2951             assoc->type == IWI_HC_IBSS_START ? "Start" : "Join",
2952             assoc->bssid, ":", assoc->dst, ":",
2953             assoc->chan, le16toh(assoc->policy), assoc->auth,
2954             le16toh(assoc->capinfo), le16toh(assoc->lintval),
2955             le16toh(assoc->intval)));
2956         error = iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
2957 done:
2958         if (error)
2959                 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
2960
2961         return (error);
2962 }
2963
2964 static void
2965 iwi_disassoc(void *arg, int pending)
2966 {
2967         struct iwi_softc *sc = arg;
2968         IWI_LOCK_DECL;
2969
2970         IWI_LOCK(sc);
2971         iwi_disassociate(sc, 0);
2972         IWI_UNLOCK(sc);
2973 }
2974
2975 static int
2976 iwi_disassociate(struct iwi_softc *sc, int quiet)
2977 {
2978         struct iwi_associate *assoc = &sc->assoc;
2979
2980         if ((sc->flags & IWI_FLAG_ASSOCIATED) == 0) {
2981                 DPRINTF(("Not associated\n"));
2982                 return (-1);
2983         }
2984
2985         IWI_STATE_BEGIN(sc, IWI_FW_DISASSOCIATING);
2986
2987         if (quiet)
2988                 assoc->type = IWI_HC_DISASSOC_QUIET;
2989         else
2990                 assoc->type = IWI_HC_DISASSOC;
2991
2992         DPRINTF(("Trying to disassociate from %6D channel %u\n",
2993             assoc->bssid, ":", assoc->chan));
2994         return iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
2995 }
2996
2997 /*
2998  * release dma resources for the firmware
2999  */
3000 static void
3001 iwi_release_fw_dma(struct iwi_softc *sc)
3002 {
3003         if (sc->fw_flags & IWI_FW_HAVE_PHY)
3004                 bus_dmamap_unload(sc->fw_dmat, sc->fw_map);
3005         if (sc->fw_flags & IWI_FW_HAVE_MAP)
3006                 bus_dmamem_free(sc->fw_dmat, sc->fw_virtaddr, sc->fw_map);
3007         if (sc->fw_flags & IWI_FW_HAVE_DMAT)
3008                 bus_dma_tag_destroy(sc->fw_dmat);
3009
3010         sc->fw_flags = 0;
3011         sc->fw_dma_size = 0;
3012         sc->fw_dmat = NULL;
3013         sc->fw_map = NULL;
3014         sc->fw_physaddr = 0;
3015         sc->fw_virtaddr = NULL;
3016 }
3017
3018 /*
3019  * allocate the dma descriptor for the firmware.
3020  * Return 0 on success, 1 on error.
3021  * Must be called unlocked, protected by IWI_FLAG_FW_LOADING.
3022  */
3023 static int
3024 iwi_init_fw_dma(struct iwi_softc *sc, int size)
3025 {
3026         if (sc->fw_dma_size >= size)
3027                 return 0;
3028         if (bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
3029             BUS_SPACE_MAXADDR, NULL, NULL, size, 1, size,
3030             0, &sc->fw_dmat) != 0) {
3031                 device_printf(sc->sc_dev,
3032                     "could not create firmware DMA tag\n");
3033                 goto error;
3034         }
3035         sc->fw_flags |= IWI_FW_HAVE_DMAT;
3036         if (bus_dmamem_alloc(sc->fw_dmat, &sc->fw_virtaddr, 0,
3037             &sc->fw_map) != 0) {
3038                 device_printf(sc->sc_dev,
3039                     "could not allocate firmware DMA memory\n");
3040                 goto error;
3041         }
3042         sc->fw_flags |= IWI_FW_HAVE_MAP;
3043         if (bus_dmamap_load(sc->fw_dmat, sc->fw_map, sc->fw_virtaddr,
3044             size, iwi_dma_map_addr, &sc->fw_physaddr, 0) != 0) {
3045                 device_printf(sc->sc_dev, "could not load firmware DMA map\n");
3046                 goto error;
3047         }
3048         sc->fw_flags |= IWI_FW_HAVE_PHY;
3049         sc->fw_dma_size = size;
3050         return 0;
3051
3052 error:
3053         iwi_release_fw_dma(sc);
3054         return 1;
3055 }
3056
3057 static void
3058 iwi_init_locked(struct iwi_softc *sc)
3059 {
3060         struct ifnet *ifp = sc->sc_ifp;
3061         struct iwi_rx_data *data;
3062         int i;
3063
3064         IWI_LOCK_ASSERT(sc);
3065
3066         if (sc->fw_state == IWI_FW_LOADING) {
3067                 device_printf(sc->sc_dev, "%s: already loading\n", __func__);
3068                 return;         /* XXX: condvar? */
3069         }
3070
3071         iwi_stop_locked(sc);
3072
3073         IWI_STATE_BEGIN(sc, IWI_FW_LOADING);
3074
3075         if (iwi_reset(sc) != 0) {
3076                 device_printf(sc->sc_dev, "could not reset adapter\n");
3077                 goto fail;
3078         }
3079         if (iwi_load_firmware(sc, &sc->fw_boot) != 0) {
3080                 device_printf(sc->sc_dev,
3081                     "could not load boot firmware %s\n", sc->fw_boot.name);
3082                 goto fail;
3083         }
3084         if (iwi_load_ucode(sc, &sc->fw_uc) != 0) {
3085                 device_printf(sc->sc_dev,
3086                     "could not load microcode %s\n", sc->fw_uc.name);
3087                 goto fail;
3088         }
3089
3090         iwi_stop_master(sc);
3091
3092         CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.physaddr);
3093         CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count);
3094         CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
3095
3096         CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq[0].physaddr);
3097         CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq[0].count);
3098         CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq[0].cur);
3099
3100         CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq[1].physaddr);
3101         CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq[1].count);
3102         CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq[1].cur);
3103
3104         CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq[2].physaddr);
3105         CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq[2].count);
3106         CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq[2].cur);
3107
3108         CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq[3].physaddr);
3109         CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq[3].count);
3110         CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq[3].cur);
3111
3112         for (i = 0; i < sc->rxq.count; i++) {
3113                 data = &sc->rxq.data[i];
3114                 CSR_WRITE_4(sc, data->reg, data->physaddr);
3115         }
3116
3117         CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count - 1);
3118
3119         if (iwi_load_firmware(sc, &sc->fw_fw) != 0) {
3120                 device_printf(sc->sc_dev,
3121                     "could not load main firmware %s\n", sc->fw_fw.name);
3122                 goto fail;
3123         }
3124         sc->flags |= IWI_FLAG_FW_INITED;
3125
3126         IWI_STATE_END(sc, IWI_FW_LOADING);
3127
3128         if (iwi_config(sc) != 0) {
3129                 device_printf(sc->sc_dev, "unable to enable adapter\n");
3130                 goto fail2;
3131         }
3132
3133         callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
3134         ifp->if_flags &= ~IFF_OACTIVE;
3135         ifp->if_flags |= IFF_RUNNING;
3136         return;
3137 fail:
3138         IWI_STATE_END(sc, IWI_FW_LOADING);
3139 fail2:
3140         iwi_stop_locked(sc);
3141 }
3142
3143 static void
3144 iwi_init(void *priv)
3145 {
3146         struct iwi_softc *sc = priv;
3147         struct ifnet *ifp = sc->sc_ifp;
3148         struct ieee80211com *ic = ifp->if_l2com;
3149         IWI_LOCK_DECL;
3150
3151         IWI_LOCK(sc);
3152         iwi_init_locked(sc);
3153         IWI_UNLOCK(sc);
3154
3155         if (ifp->if_flags & IFF_RUNNING)
3156                 ieee80211_start_all(ic);
3157 }
3158
3159 static void
3160 iwi_stop_locked(void *priv)
3161 {
3162         struct iwi_softc *sc = priv;
3163         struct ifnet *ifp = sc->sc_ifp;
3164
3165         IWI_LOCK_ASSERT(sc);
3166
3167         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
3168
3169         if (sc->sc_softled) {
3170                 callout_stop(&sc->sc_ledtimer);
3171                 sc->sc_blinking = 0;
3172         }
3173         callout_stop(&sc->sc_wdtimer);
3174         callout_stop(&sc->sc_rftimer);
3175
3176         iwi_stop_master(sc);
3177
3178         CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SOFT_RESET);
3179
3180         /* reset rings */
3181         iwi_reset_cmd_ring(sc, &sc->cmdq);
3182         iwi_reset_tx_ring(sc, &sc->txq[0]);
3183         iwi_reset_tx_ring(sc, &sc->txq[1]);
3184         iwi_reset_tx_ring(sc, &sc->txq[2]);
3185         iwi_reset_tx_ring(sc, &sc->txq[3]);
3186         iwi_reset_rx_ring(sc, &sc->rxq);
3187
3188         sc->sc_tx_timer = 0;
3189         sc->sc_state_timer = 0;
3190         sc->sc_busy_timer = 0;
3191         sc->flags &= ~(IWI_FLAG_BUSY | IWI_FLAG_ASSOCIATED);
3192         sc->fw_state = IWI_FW_IDLE;
3193         wakeup(sc);
3194 }
3195
3196 static void
3197 iwi_stop(struct iwi_softc *sc)
3198 {
3199         IWI_LOCK_DECL;
3200
3201         IWI_LOCK(sc);
3202         iwi_stop_locked(sc);
3203         IWI_UNLOCK(sc);
3204 }
3205
3206 static void
3207 iwi_restart(void *arg, int npending)
3208 {
3209         struct iwi_softc *sc = arg;
3210
3211         iwi_init(sc);
3212 }
3213
3214 /*
3215  * Return whether or not the radio is enabled in hardware
3216  * (i.e. the rfkill switch is "off").
3217  */
3218 static int
3219 iwi_getrfkill(struct iwi_softc *sc)
3220 {
3221         return (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) == 0;
3222 }
3223
3224 static void
3225 iwi_radio_on(void *arg, int pending)
3226 {
3227         struct iwi_softc *sc = arg;
3228         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
3229
3230         device_printf(sc->sc_dev, "radio turned on\n");
3231
3232         iwi_init(sc);
3233         ieee80211_notify_radio(ic, 1);
3234 }
3235
3236 static void
3237 iwi_rfkill_poll(void *arg)
3238 {
3239         struct iwi_softc *sc = arg;
3240
3241         IWI_LOCK_ASSERT(sc);
3242
3243         /*
3244          * Check for a change in rfkill state.  We get an
3245          * interrupt when a radio is disabled but not when
3246          * it is enabled so we must poll for the latter.
3247          */
3248         if (!iwi_getrfkill(sc)) {
3249                 struct ifnet *ifp = sc->sc_ifp;
3250                 struct ieee80211com *ic = ifp->if_l2com;
3251
3252                 ieee80211_runtask(ic, &sc->sc_radiontask);
3253                 return;
3254         }
3255         callout_reset(&sc->sc_rftimer, 2*hz, iwi_rfkill_poll, sc);
3256 }
3257
3258 static void
3259 iwi_radio_off(void *arg, int pending)
3260 {
3261         struct iwi_softc *sc = arg;
3262         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
3263         IWI_LOCK_DECL;
3264
3265         device_printf(sc->sc_dev, "radio turned off\n");
3266
3267         ieee80211_notify_radio(ic, 0);
3268
3269         IWI_LOCK(sc);
3270         iwi_stop_locked(sc);
3271         iwi_rfkill_poll(sc);
3272         IWI_UNLOCK(sc);
3273 }
3274
3275 static int
3276 iwi_sysctl_stats(SYSCTL_HANDLER_ARGS)
3277 {
3278         struct iwi_softc *sc = arg1;
3279         uint32_t size, buf[128];
3280
3281         memset(buf, 0, sizeof buf);
3282
3283         if (!(sc->flags & IWI_FLAG_FW_INITED))
3284                 return SYSCTL_OUT(req, buf, sizeof buf);
3285
3286         size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1);
3287         CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size);
3288
3289         return SYSCTL_OUT(req, buf, size);
3290 }
3291
3292 static int
3293 iwi_sysctl_radio(SYSCTL_HANDLER_ARGS)
3294 {
3295         struct iwi_softc *sc = arg1;
3296         int val = !iwi_getrfkill(sc);
3297
3298         return SYSCTL_OUT(req, &val, sizeof val);
3299 }
3300
3301 /*
3302  * Add sysctl knobs.
3303  */
3304 static void
3305 iwi_sysctlattach(struct iwi_softc *sc)
3306 {
3307         struct sysctl_ctx_list *ctx;
3308         struct sysctl_oid *tree;
3309
3310         ctx = &sc->sc_sysctl_ctx;
3311         sysctl_ctx_init(ctx);
3312
3313         tree = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
3314                                OID_AUTO,
3315                                device_get_nameunit(sc->sc_dev),
3316                                CTLFLAG_RD, 0, "");
3317         if (tree == NULL) {
3318                 device_printf(sc->sc_dev, "can't add sysctl node\n");
3319                 return;
3320         }
3321
3322         sc->sc_sysctl_tree = tree;
3323
3324         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "radio",
3325             CTLTYPE_INT | CTLFLAG_RD, sc, 0, iwi_sysctl_radio, "I",
3326             "radio transmitter switch state (0=off, 1=on)");
3327
3328         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "stats",
3329             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, iwi_sysctl_stats, "S",
3330             "statistics");
3331
3332         sc->bluetooth = 0;
3333         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "bluetooth",
3334             CTLFLAG_RW, &sc->bluetooth, 0, "bluetooth coexistence");
3335
3336         sc->antenna = IWI_ANTENNA_AUTO;
3337         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "antenna",
3338             CTLFLAG_RW, &sc->antenna, 0, "antenna (0=auto)");
3339 }
3340
3341 /*
3342  * LED support.
3343  *
3344  * Different cards have different capabilities.  Some have three
3345  * led's while others have only one.  The linux ipw driver defines
3346  * led's for link state (associated or not), band (11a, 11g, 11b),
3347  * and for link activity.  We use one led and vary the blink rate
3348  * according to the tx/rx traffic a la the ath driver.
3349  */
3350
3351 static __inline uint32_t
3352 iwi_toggle_event(uint32_t r)
3353 {
3354         return r &~ (IWI_RST_STANDBY | IWI_RST_GATE_ODMA |
3355                      IWI_RST_GATE_IDMA | IWI_RST_GATE_ADMA);
3356 }
3357
3358 static uint32_t
3359 iwi_read_event(struct iwi_softc *sc)
3360 {
3361         return MEM_READ_4(sc, IWI_MEM_EEPROM_EVENT);
3362 }
3363
3364 static void
3365 iwi_write_event(struct iwi_softc *sc, uint32_t v)
3366 {
3367         MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, v);
3368 }
3369
3370 static void
3371 iwi_led_done(void *arg)
3372 {
3373         struct iwi_softc *sc = arg;
3374
3375         sc->sc_blinking = 0;
3376 }
3377
3378 /*
3379  * Turn the activity LED off: flip the pin and then set a timer so no
3380  * update will happen for the specified duration.
3381  */
3382 static void
3383 iwi_led_off(void *arg)
3384 {
3385         struct iwi_softc *sc = arg;
3386         uint32_t v;
3387
3388         v = iwi_read_event(sc);
3389         v &= ~sc->sc_ledpin;
3390         iwi_write_event(sc, iwi_toggle_event(v));
3391         callout_reset(&sc->sc_ledtimer, sc->sc_ledoff, iwi_led_done, sc);
3392 }
3393
3394 /*
3395  * Blink the LED according to the specified on/off times.
3396  */
3397 static void
3398 iwi_led_blink(struct iwi_softc *sc, int on, int off)
3399 {
3400         uint32_t v;
3401
3402         v = iwi_read_event(sc);
3403         v |= sc->sc_ledpin;
3404         iwi_write_event(sc, iwi_toggle_event(v));
3405         sc->sc_blinking = 1;
3406         sc->sc_ledoff = off;
3407         callout_reset(&sc->sc_ledtimer, on, iwi_led_off, sc);
3408 }
3409
3410 static void
3411 iwi_led_event(struct iwi_softc *sc, int event)
3412 {
3413 #define N(a)    (sizeof(a)/sizeof(a[0]))
3414         /* NB: on/off times from the Atheros NDIS driver, w/ permission */
3415         static const struct {
3416                 u_int           rate;           /* tx/rx iwi rate */
3417                 u_int16_t       timeOn;         /* LED on time (ms) */
3418                 u_int16_t       timeOff;        /* LED off time (ms) */
3419         } blinkrates[] = {
3420                 { IWI_RATE_OFDM54, 40,  10 },
3421                 { IWI_RATE_OFDM48, 44,  11 },
3422                 { IWI_RATE_OFDM36, 50,  13 },
3423                 { IWI_RATE_OFDM24, 57,  14 },
3424                 { IWI_RATE_OFDM18, 67,  16 },
3425                 { IWI_RATE_OFDM12, 80,  20 },
3426                 { IWI_RATE_DS11,  100,  25 },
3427                 { IWI_RATE_OFDM9, 133,  34 },
3428                 { IWI_RATE_OFDM6, 160,  40 },
3429                 { IWI_RATE_DS5,   200,  50 },
3430                 {            6,   240,  58 },   /* XXX 3Mb/s if it existed */
3431                 { IWI_RATE_DS2,   267,  66 },
3432                 { IWI_RATE_DS1,   400, 100 },
3433                 {            0,   500, 130 },   /* unknown rate/polling */
3434         };
3435         uint32_t txrate;
3436         int j = 0;                      /* XXX silence compiler */
3437
3438         sc->sc_ledevent = ticks;        /* time of last event */
3439         if (sc->sc_blinking)            /* don't interrupt active blink */
3440                 return;
3441         switch (event) {
3442         case IWI_LED_POLL:
3443                 j = N(blinkrates)-1;
3444                 break;
3445         case IWI_LED_TX:
3446                 /* read current transmission rate from adapter */
3447                 txrate = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE);
3448                 if (blinkrates[sc->sc_txrix].rate != txrate) {
3449                         for (j = 0; j < N(blinkrates)-1; j++)
3450                                 if (blinkrates[j].rate == txrate)
3451                                         break;
3452                         sc->sc_txrix = j;
3453                 } else
3454                         j = sc->sc_txrix;
3455                 break;
3456         case IWI_LED_RX:
3457                 if (blinkrates[sc->sc_rxrix].rate != sc->sc_rxrate) {
3458                         for (j = 0; j < N(blinkrates)-1; j++)
3459                                 if (blinkrates[j].rate == sc->sc_rxrate)
3460                                         break;
3461                         sc->sc_rxrix = j;
3462                 } else
3463                         j = sc->sc_rxrix;
3464                 break;
3465         }
3466         /* XXX beware of overflow */
3467         iwi_led_blink(sc, (blinkrates[j].timeOn * hz) / 1000,
3468                 (blinkrates[j].timeOff * hz) / 1000);
3469 #undef N
3470 }
3471
3472 static int
3473 iwi_sysctl_softled(SYSCTL_HANDLER_ARGS)
3474 {
3475         struct iwi_softc *sc = arg1;
3476         int softled = sc->sc_softled;
3477         int error;
3478
3479         error = sysctl_handle_int(oidp, &softled, 0, req);
3480         if (error || !req->newptr)
3481                 return error;
3482         softled = (softled != 0);
3483         if (softled != sc->sc_softled) {
3484                 if (softled) {
3485                         uint32_t v = iwi_read_event(sc);
3486                         v &= ~sc->sc_ledpin;
3487                         iwi_write_event(sc, iwi_toggle_event(v));
3488                 }
3489                 sc->sc_softled = softled;
3490         }
3491         return 0;
3492 }
3493
3494 static void
3495 iwi_ledattach(struct iwi_softc *sc)
3496 {
3497         struct sysctl_ctx_list *ctx = &sc->sc_sysctl_ctx;
3498         struct sysctl_oid *tree = sc->sc_sysctl_tree;
3499
3500         sc->sc_blinking = 0;
3501         sc->sc_ledstate = 1;
3502         sc->sc_ledidle = (2700*hz)/1000;        /* 2.7sec */
3503         callout_init(&sc->sc_ledtimer);
3504
3505         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3506                 "softled", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
3507                 iwi_sysctl_softled, "I", "enable/disable software LED support");
3508         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3509                 "ledpin", CTLFLAG_RW, &sc->sc_ledpin, 0,
3510                 "pin setting to turn activity LED on");
3511         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3512                 "ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0,
3513                 "idle time for inactivity LED (ticks)");
3514         /* XXX for debugging */
3515         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3516                 "nictype", CTLFLAG_RD, &sc->sc_nictype, 0,
3517                 "NIC type from EEPROM");
3518
3519         sc->sc_ledpin = IWI_RST_LED_ACTIVITY;
3520         sc->sc_softled = 1;
3521
3522         sc->sc_nictype = (iwi_read_prom_word(sc, IWI_EEPROM_NIC) >> 8) & 0xff;
3523         if (sc->sc_nictype == 1) {
3524                 /*
3525                  * NB: led's are reversed.
3526                  */
3527                 sc->sc_ledpin = IWI_RST_LED_ASSOCIATED;
3528         }
3529 }
3530
3531 static void
3532 iwi_scan_start(struct ieee80211com *ic)
3533 {
3534         /* ignore */
3535 }
3536
3537 static void
3538 iwi_set_channel(struct ieee80211com *ic)
3539 {
3540         struct ifnet *ifp = ic->ic_ifp;
3541         struct iwi_softc *sc = ifp->if_softc;
3542         if (sc->fw_state == IWI_FW_IDLE)
3543                 iwi_setcurchan(sc, ic->ic_curchan->ic_ieee);
3544 }
3545
3546 static void
3547 iwi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
3548 {
3549         struct ieee80211vap *vap = ss->ss_vap;
3550         struct ifnet *ifp = vap->iv_ic->ic_ifp;
3551         struct iwi_softc *sc = ifp->if_softc;
3552         IWI_LOCK_DECL;
3553
3554         IWI_LOCK(sc);
3555         if (iwi_scanchan(sc, maxdwell, 0))
3556                 ieee80211_cancel_scan(vap);
3557         IWI_UNLOCK(sc);
3558 }
3559
3560 static void
3561 iwi_scan_mindwell(struct ieee80211_scan_state *ss)
3562 {
3563         /* NB: don't try to abort scan; wait for firmware to finish */
3564 }
3565
3566 static void
3567 iwi_scan_end(struct ieee80211com *ic)
3568 {
3569         struct ifnet *ifp = ic->ic_ifp;
3570         struct iwi_softc *sc = ifp->if_softc;
3571         IWI_LOCK_DECL;
3572
3573         IWI_LOCK(sc);
3574         sc->flags &= ~IWI_FLAG_CHANNEL_SCAN;
3575         /* NB: make sure we're still scanning */
3576         if (sc->fw_state == IWI_FW_SCANNING)
3577                 iwi_cmd(sc, IWI_CMD_ABORT_SCAN, NULL, 0);
3578         IWI_UNLOCK(sc);
3579 }