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_put(&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;
1983         IWI_LOCK_DECL;
1984
1985         sc = ifp->if_softc;
1986
1987         IWI_LOCK(sc);
1988         iwi_start_locked(ifp);
1989         IWI_UNLOCK(sc);
1990 }
1991
1992 static void
1993 iwi_watchdog(void *arg)
1994 {
1995         struct iwi_softc *sc = arg;
1996         struct ifnet *ifp = sc->sc_ifp;
1997         struct ieee80211com *ic = ifp->if_l2com;
1998
1999         IWI_LOCK(sc);
2000
2001         if (sc->sc_tx_timer > 0) {
2002                 if (--sc->sc_tx_timer == 0) {
2003                         if_printf(ifp, "device timeout\n");
2004                         ifp->if_oerrors++;
2005                         ieee80211_runtask(ic, &sc->sc_restarttask);
2006                 }
2007         }
2008         if (sc->sc_state_timer > 0) {
2009                 if (--sc->sc_state_timer == 0) {
2010                         if_printf(ifp, "firmware stuck in state %d, resetting\n",
2011                             sc->fw_state);
2012                         if (sc->fw_state == IWI_FW_SCANNING) {
2013                                 struct ieee80211com *ic = ifp->if_l2com;
2014                                 ieee80211_cancel_scan(TAILQ_FIRST(&ic->ic_vaps));
2015                         }
2016                         ieee80211_runtask(ic, &sc->sc_restarttask);
2017                         sc->sc_state_timer = 3;
2018                 }
2019         }
2020         if (sc->sc_busy_timer > 0) {
2021                 if (--sc->sc_busy_timer == 0) {
2022                         if_printf(ifp, "firmware command timeout, resetting\n");
2023                         ieee80211_runtask(ic, &sc->sc_restarttask);
2024                 }
2025         }
2026         callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
2027         IWI_UNLOCK(sc);
2028 }
2029
2030 static int
2031 iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *ucred)
2032 {
2033         struct iwi_softc *sc = ifp->if_softc;
2034         struct ieee80211com *ic = ifp->if_l2com;
2035         struct ifreq *ifr = (struct ifreq *) data;
2036         int error = 0, startall = 0;
2037         IWI_LOCK_DECL;
2038
2039         switch (cmd) {
2040         case SIOCSIFFLAGS:
2041                 IWI_LOCK(sc);
2042                 if (ifp->if_flags & IFF_UP) {
2043                         if (!(ifp->if_flags & IFF_RUNNING)) {
2044                                 iwi_init_locked(sc);
2045                                 startall = 1;
2046                         }
2047                 } else {
2048                         if (ifp->if_flags & IFF_RUNNING)
2049                                 iwi_stop_locked(sc);
2050                 }
2051                 IWI_UNLOCK(sc);
2052                 if (startall)
2053                         ieee80211_start_all(ic);
2054                 break;
2055         case SIOCGIFMEDIA:
2056                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
2057                 break;
2058         case SIOCGIFADDR:
2059                 error = ether_ioctl(ifp, cmd, data);
2060                 break;
2061         default:
2062                 error = EINVAL;
2063                 break;
2064         }
2065         return error;
2066 }
2067
2068 static void
2069 iwi_stop_master(struct iwi_softc *sc)
2070 {
2071         uint32_t tmp;
2072         int ntries;
2073
2074         /* disable interrupts */
2075         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0);
2076
2077         CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER);
2078         for (ntries = 0; ntries < 5; ntries++) {
2079                 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2080                         break;
2081                 DELAY(10);
2082         }
2083         if (ntries == 5)
2084                 device_printf(sc->sc_dev, "timeout waiting for master\n");
2085
2086         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2087         CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_PRINCETON_RESET);
2088
2089         sc->flags &= ~IWI_FLAG_FW_INITED;
2090 }
2091
2092 static int
2093 iwi_reset(struct iwi_softc *sc)
2094 {
2095         uint32_t tmp;
2096         int i, ntries;
2097
2098         iwi_stop_master(sc);
2099
2100         tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2101         CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2102
2103         CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST);
2104
2105         /* wait for clock stabilization */
2106         for (ntries = 0; ntries < 1000; ntries++) {
2107                 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY)
2108                         break;
2109                 DELAY(200);
2110         }
2111         if (ntries == 1000) {
2112                 device_printf(sc->sc_dev,
2113                     "timeout waiting for clock stabilization\n");
2114                 return EIO;
2115         }
2116
2117         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2118         CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_SOFT_RESET);
2119
2120         DELAY(10);
2121
2122         tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2123         CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2124
2125         /* clear NIC memory */
2126         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0);
2127         for (i = 0; i < 0xc000; i++)
2128                 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2129
2130         return 0;
2131 }
2132
2133 static const struct iwi_firmware_ohdr *
2134 iwi_setup_ofw(struct iwi_softc *sc, struct iwi_fw *fw)
2135 {
2136         const struct firmware *fp = fw->fp;
2137         const struct iwi_firmware_ohdr *hdr;
2138
2139         if (fp->datasize < sizeof (struct iwi_firmware_ohdr)) {
2140                 device_printf(sc->sc_dev, "image '%s' too small\n", fp->name);
2141                 return NULL;
2142         }
2143         hdr = (const struct iwi_firmware_ohdr *)fp->data;
2144         if ((IWI_FW_GET_MAJOR(le32toh(hdr->version)) != IWI_FW_REQ_MAJOR) ||
2145             (IWI_FW_GET_MINOR(le32toh(hdr->version)) != IWI_FW_REQ_MINOR)) {
2146                 device_printf(sc->sc_dev, "version for '%s' %d.%d != %d.%d\n",
2147                     fp->name, IWI_FW_GET_MAJOR(le32toh(hdr->version)),
2148                     IWI_FW_GET_MINOR(le32toh(hdr->version)), IWI_FW_REQ_MAJOR,
2149                     IWI_FW_REQ_MINOR);
2150                 return NULL;
2151         }
2152         fw->data = ((const char *) fp->data) + sizeof(struct iwi_firmware_ohdr);
2153         fw->size = fp->datasize - sizeof(struct iwi_firmware_ohdr);
2154         fw->name = fp->name;
2155         return hdr;
2156 }
2157
2158 static const struct iwi_firmware_ohdr *
2159 iwi_setup_oucode(struct iwi_softc *sc, struct iwi_fw *fw)
2160 {
2161         const struct iwi_firmware_ohdr *hdr;
2162
2163         hdr = iwi_setup_ofw(sc, fw);
2164         if (hdr != NULL && le32toh(hdr->mode) != IWI_FW_MODE_UCODE) {
2165                 device_printf(sc->sc_dev, "%s is not a ucode image\n",
2166                     fw->name);
2167                 hdr = NULL;
2168         }
2169         return hdr;
2170 }
2171
2172 static void
2173 iwi_getfw(struct iwi_fw *fw, const char *fwname,
2174           struct iwi_fw *uc, const char *ucname)
2175 {
2176         if (fw->fp == NULL)
2177                 fw->fp = firmware_get(fwname);
2178
2179         /* NB: pre-3.0 ucode is packaged separately */
2180         if (uc->fp == NULL && fw->fp != NULL && fw->fp->version < 300)
2181                 uc->fp = firmware_get(ucname);
2182 }
2183
2184 /*
2185  * Get the required firmware images if not already loaded.
2186  * Note that we hold firmware images so long as the device
2187  * is marked up in case we need to reload them on device init.
2188  * This is necessary because we re-init the device sometimes
2189  * from a context where we cannot read from the filesystem
2190  * (e.g. from the taskqueue thread when rfkill is re-enabled).
2191  * XXX return 0 on success, 1 on error.
2192  *
2193  * NB: the order of get'ing and put'ing images here is
2194  * intentional to support handling firmware images bundled
2195  * by operating mode and/or all together in one file with
2196  * the boot firmware as "master".
2197  */
2198 static int
2199 iwi_get_firmware(struct iwi_softc *sc, enum ieee80211_opmode opmode)
2200 {
2201         const struct iwi_firmware_hdr *hdr;
2202         const struct firmware *fp;
2203
2204         /* invalidate cached firmware on mode change */
2205         if (sc->fw_mode != opmode)
2206                 iwi_put_firmware(sc);
2207
2208         switch (opmode) {
2209         case IEEE80211_M_STA:
2210                 iwi_getfw(&sc->fw_fw, "iwi_bss", &sc->fw_uc, "iwi_ucode_bss");
2211                 break;
2212         case IEEE80211_M_IBSS:
2213                 iwi_getfw(&sc->fw_fw, "iwi_ibss", &sc->fw_uc, "iwi_ucode_ibss");
2214                 break;
2215         case IEEE80211_M_MONITOR:
2216                 iwi_getfw(&sc->fw_fw, "iwi_monitor",
2217                           &sc->fw_uc, "iwi_ucode_monitor");
2218                 break;
2219         default:
2220                 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode);
2221                 return EINVAL;
2222         }
2223         fp = sc->fw_fw.fp;
2224         if (fp == NULL) {
2225                 device_printf(sc->sc_dev, "could not load firmware\n");
2226                 goto bad;
2227         }
2228         if (fp->version < 300) {
2229                 /*
2230                  * Firmware prior to 3.0 was packaged as separate
2231                  * boot, firmware, and ucode images.  Verify the
2232                  * ucode image was read in, retrieve the boot image
2233                  * if needed, and check version stamps for consistency.
2234                  * The version stamps in the data are also checked
2235                  * above; this is a bit paranoid but is a cheap
2236                  * safeguard against mis-packaging.
2237                  */
2238                 if (sc->fw_uc.fp == NULL) {
2239                         device_printf(sc->sc_dev, "could not load ucode\n");
2240                         goto bad;
2241                 }
2242                 if (sc->fw_boot.fp == NULL) {
2243                         sc->fw_boot.fp = firmware_get("iwi_boot");
2244                         if (sc->fw_boot.fp == NULL) {
2245                                 device_printf(sc->sc_dev,
2246                                         "could not load boot firmware\n");
2247                                 goto bad;
2248                         }
2249                 }
2250                 if (sc->fw_boot.fp->version != sc->fw_fw.fp->version ||
2251                     sc->fw_boot.fp->version != sc->fw_uc.fp->version) {
2252                         device_printf(sc->sc_dev,
2253                             "firmware version mismatch: "
2254                             "'%s' is %d, '%s' is %d, '%s' is %d\n",
2255                             sc->fw_boot.fp->name, sc->fw_boot.fp->version,
2256                             sc->fw_uc.fp->name, sc->fw_uc.fp->version,
2257                             sc->fw_fw.fp->name, sc->fw_fw.fp->version
2258                         );
2259                         goto bad;
2260                 }
2261                 /*
2262                  * Check and setup each image.
2263                  */
2264                 if (iwi_setup_oucode(sc, &sc->fw_uc) == NULL ||
2265                     iwi_setup_ofw(sc, &sc->fw_boot) == NULL ||
2266                     iwi_setup_ofw(sc, &sc->fw_fw) == NULL)
2267                         goto bad;
2268         } else {
2269                 /*
2270                  * Check and setup combined image.
2271                  */
2272                 if (fp->datasize < sizeof(struct iwi_firmware_hdr)) {
2273                         device_printf(sc->sc_dev, "image '%s' too small\n",
2274                             fp->name);
2275                         goto bad;
2276                 }
2277                 hdr = (const struct iwi_firmware_hdr *)fp->data;
2278                 if (fp->datasize < sizeof(*hdr) + le32toh(hdr->bsize) + le32toh(hdr->usize)
2279                                 + le32toh(hdr->fsize)) {
2280                         device_printf(sc->sc_dev, "image '%s' too small (2)\n",
2281                             fp->name);
2282                         goto bad;
2283                 }
2284                 sc->fw_boot.data = ((const char *) fp->data) + sizeof(*hdr);
2285                 sc->fw_boot.size = le32toh(hdr->bsize);
2286                 sc->fw_boot.name = fp->name;
2287                 sc->fw_uc.data = sc->fw_boot.data + sc->fw_boot.size;
2288                 sc->fw_uc.size = le32toh(hdr->usize);
2289                 sc->fw_uc.name = fp->name;
2290                 sc->fw_fw.data = sc->fw_uc.data + sc->fw_uc.size;
2291                 sc->fw_fw.size = le32toh(hdr->fsize);
2292                 sc->fw_fw.name = fp->name;
2293         }
2294 #if 0
2295         device_printf(sc->sc_dev, "boot %d ucode %d fw %d bytes\n",
2296                 sc->fw_boot.size, sc->fw_uc.size, sc->fw_fw.size);
2297 #endif
2298
2299         sc->fw_mode = opmode;
2300         return 0;
2301 bad:
2302         iwi_put_firmware(sc);
2303         return 1;
2304 }
2305
2306 static void
2307 iwi_put_fw(struct iwi_fw *fw)
2308 {
2309         if (fw->fp != NULL) {
2310                 firmware_put(fw->fp, FIRMWARE_UNLOAD);
2311                 fw->fp = NULL;
2312         }
2313         fw->data = NULL;
2314         fw->size = 0;
2315         fw->name = NULL;
2316 }
2317
2318 /*
2319  * Release any cached firmware images.
2320  */
2321 static void
2322 iwi_put_firmware(struct iwi_softc *sc)
2323 {
2324         iwi_put_fw(&sc->fw_uc);
2325         iwi_put_fw(&sc->fw_fw);
2326         iwi_put_fw(&sc->fw_boot);
2327 }
2328
2329 static int
2330 iwi_load_ucode(struct iwi_softc *sc, const struct iwi_fw *fw)
2331 {
2332         uint32_t tmp;
2333         const uint16_t *w;
2334         const char *uc = fw->data;
2335         size_t size = fw->size;
2336         int i, ntries, error;
2337
2338         IWI_LOCK_ASSERT(sc);
2339         error = 0;
2340         CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) |
2341             IWI_RST_STOP_MASTER);
2342         for (ntries = 0; ntries < 5; ntries++) {
2343                 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2344                         break;
2345                 DELAY(10);
2346         }
2347         if (ntries == 5) {
2348                 device_printf(sc->sc_dev, "timeout waiting for master\n");
2349                 error = EIO;
2350                 goto fail;
2351         }
2352
2353         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
2354         DELAY(5000);
2355
2356         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2357         tmp &= ~IWI_RST_PRINCETON_RESET;
2358         CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2359
2360         DELAY(5000);
2361         MEM_WRITE_4(sc, 0x3000e0, 0);
2362         DELAY(1000);
2363         MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 1);
2364         DELAY(1000);
2365         MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 0);
2366         DELAY(1000);
2367         MEM_WRITE_1(sc, 0x200000, 0x00);
2368         MEM_WRITE_1(sc, 0x200000, 0x40);
2369         DELAY(1000);
2370
2371         /* write microcode into adapter memory */
2372         for (w = (const uint16_t *)uc; size > 0; w++, size -= 2)
2373                 MEM_WRITE_2(sc, 0x200010, htole16(*w));
2374
2375         MEM_WRITE_1(sc, 0x200000, 0x00);
2376         MEM_WRITE_1(sc, 0x200000, 0x80);
2377
2378         /* wait until we get an answer */
2379         for (ntries = 0; ntries < 100; ntries++) {
2380                 if (MEM_READ_1(sc, 0x200000) & 1)
2381                         break;
2382                 DELAY(100);
2383         }
2384         if (ntries == 100) {
2385                 device_printf(sc->sc_dev,
2386                     "timeout waiting for ucode to initialize\n");
2387                 error = EIO;
2388                 goto fail;
2389         }
2390
2391         /* read the answer or the firmware will not initialize properly */
2392         for (i = 0; i < 7; i++)
2393                 MEM_READ_4(sc, 0x200004);
2394
2395         MEM_WRITE_1(sc, 0x200000, 0x00);
2396
2397 fail:
2398         return error;
2399 }
2400
2401 /* macro to handle unaligned little endian data in firmware image */
2402 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2403
2404 static int
2405 iwi_load_firmware(struct iwi_softc *sc, const struct iwi_fw *fw)
2406 {
2407         u_char *p, *end;
2408         uint32_t sentinel, ctl, src, dst, sum, len, mlen, tmp;
2409         int ntries, error;
2410
2411         IWI_LOCK_ASSERT(sc);
2412
2413         /* copy firmware image to DMA memory */
2414         memcpy(sc->fw_virtaddr, fw->data, fw->size);
2415
2416         /* make sure the adapter will get up-to-date values */
2417         bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_PREWRITE);
2418
2419         /* tell the adapter where the command blocks are stored */
2420         MEM_WRITE_4(sc, 0x3000a0, 0x27000);
2421
2422         /*
2423          * Store command blocks into adapter's internal memory using register
2424          * indirections. The adapter will read the firmware image through DMA
2425          * using information stored in command blocks.
2426          */
2427         src = sc->fw_physaddr;
2428         p = sc->fw_virtaddr;
2429         end = p + fw->size;
2430         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000);
2431
2432         while (p < end) {
2433                 dst = GETLE32(p); p += 4; src += 4;
2434                 len = GETLE32(p); p += 4; src += 4;
2435                 p += len;
2436
2437                 while (len > 0) {
2438                         mlen = min(len, IWI_CB_MAXDATALEN);
2439
2440                         ctl = IWI_CB_DEFAULT_CTL | mlen;
2441                         sum = ctl ^ src ^ dst;
2442
2443                         /* write a command block */
2444                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl);
2445                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src);
2446                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst);
2447                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum);
2448
2449                         src += mlen;
2450                         dst += mlen;
2451                         len -= mlen;
2452                 }
2453         }
2454
2455         /* write a fictive final command block (sentinel) */
2456         sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR);
2457         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2458
2459         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2460         tmp &= ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER);
2461         CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2462
2463         /* tell the adapter to start processing command blocks */
2464         MEM_WRITE_4(sc, 0x3000a4, 0x540100);
2465
2466         /* wait until the adapter reaches the sentinel */
2467         for (ntries = 0; ntries < 400; ntries++) {
2468                 if (MEM_READ_4(sc, 0x3000d0) >= sentinel)
2469                         break;
2470                 DELAY(100);
2471         }
2472         /* sync dma, just in case */
2473         bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_POSTWRITE);
2474         if (ntries == 400) {
2475                 device_printf(sc->sc_dev,
2476                     "timeout processing command blocks for %s firmware\n",
2477                     fw->name);
2478                 return EIO;
2479         }
2480
2481         /* we're done with command blocks processing */
2482         MEM_WRITE_4(sc, 0x3000a4, 0x540c00);
2483
2484         /* allow interrupts so we know when the firmware is ready */
2485         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK);
2486
2487         /* tell the adapter to initialize the firmware */
2488         CSR_WRITE_4(sc, IWI_CSR_RST, 0);
2489
2490         tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2491         CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_ALLOW_STANDBY);
2492
2493         /* wait at most one second for firmware initialization to complete */
2494         error = tsleep(sc, 0, "iwiinit", hz);
2495         if (error != 0) {
2496                 device_printf(sc->sc_dev, "timeout waiting for firmware "
2497                             "initialization to complete\n");
2498         }
2499
2500         return error;
2501 }
2502
2503 static int
2504 iwi_setpowermode(struct iwi_softc *sc, struct ieee80211vap *vap)
2505 {
2506         uint32_t data;
2507
2508         if (vap->iv_flags & IEEE80211_F_PMGTON) {
2509                 /* XXX set more fine-grained operation */
2510                 data = htole32(IWI_POWER_MODE_MAX);
2511         } else
2512                 data = htole32(IWI_POWER_MODE_CAM);
2513
2514         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2515         return iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data);
2516 }
2517
2518 static int
2519 iwi_setwepkeys(struct iwi_softc *sc, struct ieee80211vap *vap)
2520 {
2521         struct iwi_wep_key wepkey;
2522         struct ieee80211_key *wk;
2523         int error, i;
2524
2525         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2526                 wk = &vap->iv_nw_keys[i];
2527
2528                 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY;
2529                 wepkey.idx = i;
2530                 wepkey.len = wk->wk_keylen;
2531                 memset(wepkey.key, 0, sizeof wepkey.key);
2532                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2533                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2534                     wepkey.len));
2535                 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey,
2536                     sizeof wepkey);
2537                 if (error != 0)
2538                         return error;
2539         }
2540         return 0;
2541 }
2542
2543 static int
2544 iwi_config(struct iwi_softc *sc)
2545 {
2546         struct ifnet *ifp = sc->sc_ifp;
2547         struct ieee80211com *ic = ifp->if_l2com;
2548         struct iwi_configuration config;
2549         struct iwi_rateset rs;
2550         struct iwi_txpower power;
2551         uint32_t data;
2552         int error, i;
2553         const uint8_t *eaddr = IF_LLADDR(ifp);
2554
2555         IWI_LOCK_ASSERT(sc);
2556
2557         DPRINTF(("Setting MAC address to %6D\n", eaddr, ":"));
2558         error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, IF_LLADDR(ifp),
2559             IEEE80211_ADDR_LEN);
2560         if (error != 0)
2561                 return error;
2562
2563         memset(&config, 0, sizeof config);
2564         config.bluetooth_coexistence = sc->bluetooth;
2565         config.silence_threshold = 0x1e;
2566         config.antenna = sc->antenna;
2567         config.multicast_enabled = 1;
2568         config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2569         config.disable_unicast_decryption = 1;
2570         config.disable_multicast_decryption = 1;
2571         DPRINTF(("Configuring adapter\n"));
2572         error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2573         if (error != 0)
2574                 return error;
2575         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2576                 power.mode = IWI_MODE_11B;
2577                 power.nchan = 11;
2578                 for (i = 0; i < 11; i++) {
2579                         power.chan[i].chan = i + 1;
2580                         power.chan[i].power = IWI_TXPOWER_MAX;
2581                 }
2582                 DPRINTF(("Setting .11b channels tx power\n"));
2583                 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2584                 if (error != 0)
2585                         return error;
2586
2587                 power.mode = IWI_MODE_11G;
2588                 DPRINTF(("Setting .11g channels tx power\n"));
2589                 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2590                 if (error != 0)
2591                         return error;
2592         }
2593
2594         memset(&rs, 0, sizeof rs);
2595         rs.mode = IWI_MODE_11G;
2596         rs.type = IWI_RATESET_TYPE_SUPPORTED;
2597         rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates;
2598         memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates,
2599             rs.nrates);
2600         DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates));
2601         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2602         if (error != 0)
2603                 return error;
2604
2605         memset(&rs, 0, sizeof rs);
2606         rs.mode = IWI_MODE_11A;
2607         rs.type = IWI_RATESET_TYPE_SUPPORTED;
2608         rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates;
2609         memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates,
2610             rs.nrates);
2611         DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates));
2612         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2613         if (error != 0)
2614                 return error;
2615
2616         data = htole32(karc4random());
2617         DPRINTF(("Setting initialization vector to %u\n", le32toh(data)));
2618         error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data);
2619         if (error != 0)
2620                 return error;
2621
2622         /* enable adapter */
2623         DPRINTF(("Enabling adapter\n"));
2624         return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0);
2625 }
2626
2627 static __inline void
2628 set_scan_type(struct iwi_scan_ext *scan, int ix, int scan_type)
2629 {
2630         uint8_t *st = &scan->scan_type[ix / 2];
2631         if (ix % 2)
2632                 *st = (*st & 0xf0) | ((scan_type & 0xf) << 0);
2633         else
2634                 *st = (*st & 0x0f) | ((scan_type & 0xf) << 4);
2635 }
2636
2637 static int
2638 scan_type(const struct ieee80211_scan_state *ss,
2639         const struct ieee80211_channel *chan)
2640 {
2641         /* We can only set one essid for a directed scan */
2642         if (ss->ss_nssid != 0)
2643                 return IWI_SCAN_TYPE_BDIRECTED;
2644         if ((ss->ss_flags & IEEE80211_SCAN_ACTIVE) &&
2645             (chan->ic_flags & IEEE80211_CHAN_PASSIVE) == 0)
2646                 return IWI_SCAN_TYPE_BROADCAST;
2647         return IWI_SCAN_TYPE_PASSIVE;
2648 }
2649
2650 static __inline int
2651 scan_band(const struct ieee80211_channel *c)
2652 {
2653         return IEEE80211_IS_CHAN_5GHZ(c) ?  IWI_CHAN_5GHZ : IWI_CHAN_2GHZ;
2654 }
2655
2656 /*
2657  * Start a scan on the current channel or all channels.
2658  */
2659 static int
2660 iwi_scanchan(struct iwi_softc *sc, unsigned long maxdwell, int allchan)
2661 {
2662         struct ieee80211com *ic;
2663         struct ieee80211_channel *chan;
2664         struct ieee80211_scan_state *ss;
2665         struct iwi_scan_ext scan;
2666         int error = 0;
2667
2668         IWI_LOCK_ASSERT(sc);
2669         if (sc->fw_state == IWI_FW_SCANNING) {
2670                 /*
2671                  * This should not happen as we only trigger scan_next after
2672                  * completion
2673                  */
2674                 DPRINTF(("%s: called too early - still scanning\n", __func__));
2675                 return (EBUSY);
2676         }
2677         IWI_STATE_BEGIN(sc, IWI_FW_SCANNING);
2678
2679         ic = sc->sc_ifp->if_l2com;
2680         ss = ic->ic_scan;
2681
2682         memset(&scan, 0, sizeof scan);
2683         scan.full_scan_index = htole32(++sc->sc_scangen);
2684         scan.dwell_time[IWI_SCAN_TYPE_PASSIVE] = htole16(maxdwell);
2685         if (ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) {
2686                 /*
2687                  * Use very short dwell times for when we send probe request
2688                  * frames.  Without this bg scans hang.  Ideally this should
2689                  * be handled with early-termination as done by net80211 but
2690                  * that's not feasible (aborting a scan is problematic).
2691                  */
2692                 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(30);
2693                 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(30);
2694         } else {
2695                 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(maxdwell);
2696                 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(maxdwell);
2697         }
2698
2699         /* We can only set one essid for a directed scan */
2700         if (ss->ss_nssid != 0) {
2701                 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ss->ss_ssid[0].ssid,
2702                     ss->ss_ssid[0].len);
2703                 if (error)
2704                         return (error);
2705         }
2706
2707         if (allchan) {
2708                 int i, next, band, b, bstart;
2709                 /*
2710                  * Convert scan list to run-length encoded channel list
2711                  * the firmware requires (preserving the order setup by
2712                  * net80211).  The first entry in each run specifies the
2713                  * band and the count of items in the run.
2714                  */
2715                 next = 0;               /* next open slot */
2716                 bstart = 0;             /* NB: not needed, silence compiler */
2717                 band = -1;              /* NB: impossible value */
2718                 KASSERT(ss->ss_last > 0, ("no channels"));
2719                 for (i = 0; i < ss->ss_last; i++) {
2720                         chan = ss->ss_chans[i];
2721                         b = scan_band(chan);
2722                         if (b != band) {
2723                                 if (band != -1)
2724                                         scan.channels[bstart] =
2725                                             (next - bstart) | band;
2726                                 /* NB: this allocates a slot for the run-len */
2727                                 band = b, bstart = next++;
2728                         }
2729                         if (next >= IWI_SCAN_CHANNELS) {
2730                                 DPRINTF(("truncating scan list\n"));
2731                                 break;
2732                         }
2733                         scan.channels[next] = ieee80211_chan2ieee(ic, chan);
2734                         set_scan_type(&scan, next, scan_type(ss, chan));
2735                         next++;
2736                 }
2737                 scan.channels[bstart] = (next - bstart) | band;
2738         } else {
2739                 /* Scan the current channel only */
2740                 chan = ic->ic_curchan;
2741                 scan.channels[0] = 1 | scan_band(chan);
2742                 scan.channels[1] = ieee80211_chan2ieee(ic, chan);
2743                 set_scan_type(&scan, 1, scan_type(ss, chan));
2744         }
2745 #ifdef IWI_DEBUG
2746         if (iwi_debug > 0) {
2747                 static const char *scantype[8] =
2748                    { "PSTOP", "PASV", "DIR", "BCAST", "BDIR", "5", "6", "7" };
2749                 int i;
2750                 kprintf("Scan request: index %u dwell %d/%d/%d\n"
2751                     , le32toh(scan.full_scan_index)
2752                     , le16toh(scan.dwell_time[IWI_SCAN_TYPE_PASSIVE])
2753                     , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BROADCAST])
2754                     , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED])
2755                 );
2756                 i = 0;
2757                 do {
2758                         int run = scan.channels[i];
2759                         if (run == 0)
2760                                 break;
2761                         kprintf("Scan %d %s channels:", run & 0x3f,
2762                             run & IWI_CHAN_2GHZ ? "2.4GHz" : "5GHz");
2763                         for (run &= 0x3f, i++; run > 0; run--, i++) {
2764                                 uint8_t type = scan.scan_type[i/2];
2765                                 kprintf(" %u/%s", scan.channels[i],
2766                                     scantype[(i & 1 ? type : type>>4) & 7]);
2767                         }
2768                         kprintf("\n");
2769                 } while (i < IWI_SCAN_CHANNELS);
2770         }
2771 #endif
2772
2773         return (iwi_cmd(sc, IWI_CMD_SCAN_EXT, &scan, sizeof scan));
2774 }
2775
2776 static int
2777 iwi_set_sensitivity(struct iwi_softc *sc, int8_t rssi_dbm)
2778 {
2779         struct iwi_sensitivity sens;
2780
2781         DPRINTF(("Setting sensitivity to %d\n", rssi_dbm));
2782
2783         memset(&sens, 0, sizeof sens);
2784         sens.rssi = htole16(rssi_dbm);
2785         return iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &sens, sizeof sens);
2786 }
2787
2788 static int
2789 iwi_auth_and_assoc(struct iwi_softc *sc, struct ieee80211vap *vap)
2790 {
2791         struct ieee80211com *ic = vap->iv_ic;
2792         struct ifnet *ifp = vap->iv_ifp;
2793         struct ieee80211_node *ni = vap->iv_bss;
2794         struct iwi_configuration config;
2795         struct iwi_associate *assoc = &sc->assoc;
2796         struct iwi_rateset rs;
2797         uint16_t capinfo;
2798         uint32_t data;
2799         int error, mode;
2800
2801         IWI_LOCK_ASSERT(sc);
2802
2803         if (sc->flags & IWI_FLAG_ASSOCIATED) {
2804                 DPRINTF(("Already associated\n"));
2805                 return (-1);
2806         }
2807
2808         IWI_STATE_BEGIN(sc, IWI_FW_ASSOCIATING);
2809         error = 0;
2810         mode = 0;
2811
2812         if (IEEE80211_IS_CHAN_A(ic->ic_curchan))
2813                 mode = IWI_MODE_11A;
2814         else if (IEEE80211_IS_CHAN_G(ic->ic_curchan))
2815                 mode = IWI_MODE_11G;
2816         if (IEEE80211_IS_CHAN_B(ic->ic_curchan))
2817                 mode = IWI_MODE_11B;
2818
2819         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2820                 memset(&config, 0, sizeof config);
2821                 config.bluetooth_coexistence = sc->bluetooth;
2822                 config.antenna = sc->antenna;
2823                 config.multicast_enabled = 1;
2824                 if (mode == IWI_MODE_11G)
2825                         config.use_protection = 1;
2826                 config.answer_pbreq =
2827                     (vap->iv_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2828                 config.disable_unicast_decryption = 1;
2829                 config.disable_multicast_decryption = 1;
2830                 DPRINTF(("Configuring adapter\n"));
2831                 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2832                 if (error != 0)
2833                         goto done;
2834         }
2835
2836 #ifdef IWI_DEBUG
2837         if (iwi_debug > 0) {
2838                 kprintf("Setting ESSID to ");
2839                 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
2840                 kprintf("\n");
2841         }
2842 #endif
2843         error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen);
2844         if (error != 0)
2845                 goto done;
2846
2847         error = iwi_setpowermode(sc, vap);
2848         if (error != 0)
2849                 goto done;
2850
2851         data = htole32(vap->iv_rtsthreshold);
2852         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2853         error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2854         if (error != 0)
2855                 goto done;
2856
2857         data = htole32(vap->iv_fragthreshold);
2858         DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data)));
2859         error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2860         if (error != 0)
2861                 goto done;
2862
2863         /* the rate set has already been "negotiated" */
2864         memset(&rs, 0, sizeof rs);
2865         rs.mode = mode;
2866         rs.type = IWI_RATESET_TYPE_NEGOTIATED;
2867         rs.nrates = ni->ni_rates.rs_nrates;
2868         if (rs.nrates > IWI_RATESET_SIZE) {
2869                 DPRINTF(("Truncating negotiated rate set from %u\n",
2870                     rs.nrates));
2871                 rs.nrates = IWI_RATESET_SIZE;
2872         }
2873         memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates);
2874         DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates));
2875         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2876         if (error != 0)
2877                 goto done;
2878
2879         memset(assoc, 0, sizeof *assoc);
2880
2881         if ((vap->iv_flags & IEEE80211_F_WME) && ni->ni_ies.wme_ie != NULL) {
2882                 /* NB: don't treat WME setup as failure */
2883                 if (iwi_wme_setparams(sc, ic) == 0 && iwi_wme_setie(sc) == 0)
2884                         assoc->policy |= htole16(IWI_POLICY_WME);
2885                 /* XXX complain on failure? */
2886         }
2887
2888         if (vap->iv_appie_wpa != NULL) {
2889                 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2890
2891                 DPRINTF(("Setting optional IE (len=%u)\n", ie->ie_len));
2892                 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ie->ie_data, ie->ie_len);
2893                 if (error != 0)
2894                         goto done;
2895         }
2896
2897         error = iwi_set_sensitivity(sc, ic->ic_node_getrssi(ni));
2898         if (error != 0)
2899                 goto done;
2900
2901         assoc->mode = mode;
2902         assoc->chan = ic->ic_curchan->ic_ieee;
2903         /*
2904          * NB: do not arrange for shared key auth w/o privacy
2905          *     (i.e. a wep key); it causes a firmware error.
2906          */
2907         if ((vap->iv_flags & IEEE80211_F_PRIVACY) &&
2908             ni->ni_authmode == IEEE80211_AUTH_SHARED) {
2909                 assoc->auth = IWI_AUTH_SHARED;
2910                 /*
2911                  * It's possible to have privacy marked but no default
2912                  * key setup.  This typically is due to a user app bug
2913                  * but if we blindly grab the key the firmware will
2914                  * barf so avoid it for now.
2915                  */
2916                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE)
2917                         assoc->auth |= vap->iv_def_txkey << 4;
2918
2919                 error = iwi_setwepkeys(sc, vap);
2920                 if (error != 0)
2921                         goto done;
2922         }
2923         if (vap->iv_flags & IEEE80211_F_WPA)
2924                 assoc->policy |= htole16(IWI_POLICY_WPA);
2925         if (vap->iv_opmode == IEEE80211_M_IBSS && ni->ni_tstamp.tsf == 0)
2926                 assoc->type = IWI_HC_IBSS_START;
2927         else
2928                 assoc->type = IWI_HC_ASSOC;
2929         memcpy(assoc->tstamp, ni->ni_tstamp.data, 8);
2930
2931         if (vap->iv_opmode == IEEE80211_M_IBSS)
2932                 capinfo = IEEE80211_CAPINFO_IBSS;
2933         else
2934                 capinfo = IEEE80211_CAPINFO_ESS;
2935         if (vap->iv_flags & IEEE80211_F_PRIVACY)
2936                 capinfo |= IEEE80211_CAPINFO_PRIVACY;
2937         if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
2938             IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
2939                 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
2940         if (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)
2941                 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME;
2942         assoc->capinfo = htole16(capinfo);
2943
2944         assoc->lintval = htole16(ic->ic_lintval);
2945         assoc->intval = htole16(ni->ni_intval);
2946         IEEE80211_ADDR_COPY(assoc->bssid, ni->ni_bssid);
2947         if (vap->iv_opmode == IEEE80211_M_IBSS)
2948                 IEEE80211_ADDR_COPY(assoc->dst, ifp->if_broadcastaddr);
2949         else
2950                 IEEE80211_ADDR_COPY(assoc->dst, ni->ni_bssid);
2951
2952         DPRINTF(("%s bssid %6D dst %6D channel %u policy 0x%x "
2953             "auth %u capinfo 0x%x lintval %u bintval %u\n",
2954             assoc->type == IWI_HC_IBSS_START ? "Start" : "Join",
2955             assoc->bssid, ":", assoc->dst, ":",
2956             assoc->chan, le16toh(assoc->policy), assoc->auth,
2957             le16toh(assoc->capinfo), le16toh(assoc->lintval),
2958             le16toh(assoc->intval)));
2959         error = iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
2960 done:
2961         if (error)
2962                 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
2963
2964         return (error);
2965 }
2966
2967 static void
2968 iwi_disassoc(void *arg, int pending)
2969 {
2970         struct iwi_softc *sc = arg;
2971         IWI_LOCK_DECL;
2972
2973         IWI_LOCK(sc);
2974         iwi_disassociate(sc, 0);
2975         IWI_UNLOCK(sc);
2976 }
2977
2978 static int
2979 iwi_disassociate(struct iwi_softc *sc, int quiet)
2980 {
2981         struct iwi_associate *assoc = &sc->assoc;
2982
2983         if ((sc->flags & IWI_FLAG_ASSOCIATED) == 0) {
2984                 DPRINTF(("Not associated\n"));
2985                 return (-1);
2986         }
2987
2988         IWI_STATE_BEGIN(sc, IWI_FW_DISASSOCIATING);
2989
2990         if (quiet)
2991                 assoc->type = IWI_HC_DISASSOC_QUIET;
2992         else
2993                 assoc->type = IWI_HC_DISASSOC;
2994
2995         DPRINTF(("Trying to disassociate from %6D channel %u\n",
2996             assoc->bssid, ":", assoc->chan));
2997         return iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
2998 }
2999
3000 /*
3001  * release dma resources for the firmware
3002  */
3003 static void
3004 iwi_release_fw_dma(struct iwi_softc *sc)
3005 {
3006         if (sc->fw_flags & IWI_FW_HAVE_PHY)
3007                 bus_dmamap_unload(sc->fw_dmat, sc->fw_map);
3008         if (sc->fw_flags & IWI_FW_HAVE_MAP)
3009                 bus_dmamem_free(sc->fw_dmat, sc->fw_virtaddr, sc->fw_map);
3010         if (sc->fw_flags & IWI_FW_HAVE_DMAT)
3011                 bus_dma_tag_destroy(sc->fw_dmat);
3012
3013         sc->fw_flags = 0;
3014         sc->fw_dma_size = 0;
3015         sc->fw_dmat = NULL;
3016         sc->fw_map = NULL;
3017         sc->fw_physaddr = 0;
3018         sc->fw_virtaddr = NULL;
3019 }
3020
3021 /*
3022  * allocate the dma descriptor for the firmware.
3023  * Return 0 on success, 1 on error.
3024  * Must be called unlocked, protected by IWI_FLAG_FW_LOADING.
3025  */
3026 static int
3027 iwi_init_fw_dma(struct iwi_softc *sc, int size)
3028 {
3029         if (sc->fw_dma_size >= size)
3030                 return 0;
3031         if (bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
3032             BUS_SPACE_MAXADDR, NULL, NULL, size, 1, size,
3033             0, &sc->fw_dmat) != 0) {
3034                 device_printf(sc->sc_dev,
3035                     "could not create firmware DMA tag\n");
3036                 goto error;
3037         }
3038         sc->fw_flags |= IWI_FW_HAVE_DMAT;
3039         if (bus_dmamem_alloc(sc->fw_dmat, &sc->fw_virtaddr, 0,
3040             &sc->fw_map) != 0) {
3041                 device_printf(sc->sc_dev,
3042                     "could not allocate firmware DMA memory\n");
3043                 goto error;
3044         }
3045         sc->fw_flags |= IWI_FW_HAVE_MAP;
3046         if (bus_dmamap_load(sc->fw_dmat, sc->fw_map, sc->fw_virtaddr,
3047             size, iwi_dma_map_addr, &sc->fw_physaddr, 0) != 0) {
3048                 device_printf(sc->sc_dev, "could not load firmware DMA map\n");
3049                 goto error;
3050         }
3051         sc->fw_flags |= IWI_FW_HAVE_PHY;
3052         sc->fw_dma_size = size;
3053         return 0;
3054
3055 error:
3056         iwi_release_fw_dma(sc);
3057         return 1;
3058 }
3059
3060 static void
3061 iwi_init_locked(struct iwi_softc *sc)
3062 {
3063         struct ifnet *ifp = sc->sc_ifp;
3064         struct iwi_rx_data *data;
3065         int i;
3066
3067         IWI_LOCK_ASSERT(sc);
3068
3069         if (sc->fw_state == IWI_FW_LOADING) {
3070                 device_printf(sc->sc_dev, "%s: already loading\n", __func__);
3071                 return;         /* XXX: condvar? */
3072         }
3073
3074         iwi_stop_locked(sc);
3075
3076         IWI_STATE_BEGIN(sc, IWI_FW_LOADING);
3077
3078         if (iwi_reset(sc) != 0) {
3079                 device_printf(sc->sc_dev, "could not reset adapter\n");
3080                 goto fail;
3081         }
3082         if (iwi_load_firmware(sc, &sc->fw_boot) != 0) {
3083                 device_printf(sc->sc_dev,
3084                     "could not load boot firmware %s\n", sc->fw_boot.name);
3085                 goto fail;
3086         }
3087         if (iwi_load_ucode(sc, &sc->fw_uc) != 0) {
3088                 device_printf(sc->sc_dev,
3089                     "could not load microcode %s\n", sc->fw_uc.name);
3090                 goto fail;
3091         }
3092
3093         iwi_stop_master(sc);
3094
3095         CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.physaddr);
3096         CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count);
3097         CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
3098
3099         CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq[0].physaddr);
3100         CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq[0].count);
3101         CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq[0].cur);
3102
3103         CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq[1].physaddr);
3104         CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq[1].count);
3105         CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq[1].cur);
3106
3107         CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq[2].physaddr);
3108         CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq[2].count);
3109         CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq[2].cur);
3110
3111         CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq[3].physaddr);
3112         CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq[3].count);
3113         CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq[3].cur);
3114
3115         for (i = 0; i < sc->rxq.count; i++) {
3116                 data = &sc->rxq.data[i];
3117                 CSR_WRITE_4(sc, data->reg, data->physaddr);
3118         }
3119
3120         CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count - 1);
3121
3122         if (iwi_load_firmware(sc, &sc->fw_fw) != 0) {
3123                 device_printf(sc->sc_dev,
3124                     "could not load main firmware %s\n", sc->fw_fw.name);
3125                 goto fail;
3126         }
3127         sc->flags |= IWI_FLAG_FW_INITED;
3128
3129         IWI_STATE_END(sc, IWI_FW_LOADING);
3130
3131         if (iwi_config(sc) != 0) {
3132                 device_printf(sc->sc_dev, "unable to enable adapter\n");
3133                 goto fail2;
3134         }
3135
3136         callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
3137         ifp->if_flags &= ~IFF_OACTIVE;
3138         ifp->if_flags |= IFF_RUNNING;
3139         return;
3140 fail:
3141         IWI_STATE_END(sc, IWI_FW_LOADING);
3142 fail2:
3143         iwi_stop_locked(sc);
3144 }
3145
3146 static void
3147 iwi_init(void *priv)
3148 {
3149         struct iwi_softc *sc = priv;
3150         struct ifnet *ifp = sc->sc_ifp;
3151         struct ieee80211com *ic = ifp->if_l2com;
3152         IWI_LOCK_DECL;
3153
3154         IWI_LOCK(sc);
3155         iwi_init_locked(sc);
3156         IWI_UNLOCK(sc);
3157
3158         if (ifp->if_flags & IFF_RUNNING)
3159                 ieee80211_start_all(ic);
3160 }
3161
3162 static void
3163 iwi_stop_locked(void *priv)
3164 {
3165         struct iwi_softc *sc = priv;
3166         struct ifnet *ifp = sc->sc_ifp;
3167
3168         IWI_LOCK_ASSERT(sc);
3169
3170         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
3171
3172         if (sc->sc_softled) {
3173                 callout_stop(&sc->sc_ledtimer);
3174                 sc->sc_blinking = 0;
3175         }
3176         callout_stop(&sc->sc_wdtimer);
3177         callout_stop(&sc->sc_rftimer);
3178
3179         iwi_stop_master(sc);
3180
3181         CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SOFT_RESET);
3182
3183         /* reset rings */
3184         iwi_reset_cmd_ring(sc, &sc->cmdq);
3185         iwi_reset_tx_ring(sc, &sc->txq[0]);
3186         iwi_reset_tx_ring(sc, &sc->txq[1]);
3187         iwi_reset_tx_ring(sc, &sc->txq[2]);
3188         iwi_reset_tx_ring(sc, &sc->txq[3]);
3189         iwi_reset_rx_ring(sc, &sc->rxq);
3190
3191         sc->sc_tx_timer = 0;
3192         sc->sc_state_timer = 0;
3193         sc->sc_busy_timer = 0;
3194         sc->flags &= ~(IWI_FLAG_BUSY | IWI_FLAG_ASSOCIATED);
3195         sc->fw_state = IWI_FW_IDLE;
3196         wakeup(sc);
3197 }
3198
3199 static void
3200 iwi_stop(struct iwi_softc *sc)
3201 {
3202         IWI_LOCK_DECL;
3203
3204         IWI_LOCK(sc);
3205         iwi_stop_locked(sc);
3206         IWI_UNLOCK(sc);
3207 }
3208
3209 static void
3210 iwi_restart(void *arg, int npending)
3211 {
3212         struct iwi_softc *sc = arg;
3213
3214         iwi_init(sc);
3215 }
3216
3217 /*
3218  * Return whether or not the radio is enabled in hardware
3219  * (i.e. the rfkill switch is "off").
3220  */
3221 static int
3222 iwi_getrfkill(struct iwi_softc *sc)
3223 {
3224         return (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) == 0;
3225 }
3226
3227 static void
3228 iwi_radio_on(void *arg, int pending)
3229 {
3230         struct iwi_softc *sc = arg;
3231         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
3232
3233         device_printf(sc->sc_dev, "radio turned on\n");
3234
3235         iwi_init(sc);
3236         ieee80211_notify_radio(ic, 1);
3237 }
3238
3239 static void
3240 iwi_rfkill_poll(void *arg)
3241 {
3242         struct iwi_softc *sc = arg;
3243
3244         IWI_LOCK_ASSERT(sc);
3245
3246         /*
3247          * Check for a change in rfkill state.  We get an
3248          * interrupt when a radio is disabled but not when
3249          * it is enabled so we must poll for the latter.
3250          */
3251         if (!iwi_getrfkill(sc)) {
3252                 struct ifnet *ifp = sc->sc_ifp;
3253                 struct ieee80211com *ic = ifp->if_l2com;
3254
3255                 ieee80211_runtask(ic, &sc->sc_radiontask);
3256                 return;
3257         }
3258         callout_reset(&sc->sc_rftimer, 2*hz, iwi_rfkill_poll, sc);
3259 }
3260
3261 static void
3262 iwi_radio_off(void *arg, int pending)
3263 {
3264         struct iwi_softc *sc = arg;
3265         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
3266         IWI_LOCK_DECL;
3267
3268         device_printf(sc->sc_dev, "radio turned off\n");
3269
3270         ieee80211_notify_radio(ic, 0);
3271
3272         IWI_LOCK(sc);
3273         iwi_stop_locked(sc);
3274         iwi_rfkill_poll(sc);
3275         IWI_UNLOCK(sc);
3276 }
3277
3278 static int
3279 iwi_sysctl_stats(SYSCTL_HANDLER_ARGS)
3280 {
3281         struct iwi_softc *sc = arg1;
3282         uint32_t size, buf[128];
3283
3284         memset(buf, 0, sizeof buf);
3285
3286         if (!(sc->flags & IWI_FLAG_FW_INITED))
3287                 return SYSCTL_OUT(req, buf, sizeof buf);
3288
3289         size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1);
3290         CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size);
3291
3292         return SYSCTL_OUT(req, buf, size);
3293 }
3294
3295 static int
3296 iwi_sysctl_radio(SYSCTL_HANDLER_ARGS)
3297 {
3298         struct iwi_softc *sc = arg1;
3299         int val = !iwi_getrfkill(sc);
3300
3301         return SYSCTL_OUT(req, &val, sizeof val);
3302 }
3303
3304 /*
3305  * Add sysctl knobs.
3306  */
3307 static void
3308 iwi_sysctlattach(struct iwi_softc *sc)
3309 {
3310         struct sysctl_ctx_list *ctx;
3311         struct sysctl_oid *tree;
3312
3313         ctx = &sc->sc_sysctl_ctx;
3314         sysctl_ctx_init(ctx);
3315
3316         tree = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
3317                                OID_AUTO,
3318                                device_get_nameunit(sc->sc_dev),
3319                                CTLFLAG_RD, 0, "");
3320         if (tree == NULL) {
3321                 device_printf(sc->sc_dev, "can't add sysctl node\n");
3322                 return;
3323         }
3324
3325         sc->sc_sysctl_tree = tree;
3326
3327         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "radio",
3328             CTLTYPE_INT | CTLFLAG_RD, sc, 0, iwi_sysctl_radio, "I",
3329             "radio transmitter switch state (0=off, 1=on)");
3330
3331         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "stats",
3332             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, iwi_sysctl_stats, "S",
3333             "statistics");
3334
3335         sc->bluetooth = 0;
3336         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "bluetooth",
3337             CTLFLAG_RW, &sc->bluetooth, 0, "bluetooth coexistence");
3338
3339         sc->antenna = IWI_ANTENNA_AUTO;
3340         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "antenna",
3341             CTLFLAG_RW, &sc->antenna, 0, "antenna (0=auto)");
3342 }
3343
3344 /*
3345  * LED support.
3346  *
3347  * Different cards have different capabilities.  Some have three
3348  * led's while others have only one.  The linux ipw driver defines
3349  * led's for link state (associated or not), band (11a, 11g, 11b),
3350  * and for link activity.  We use one led and vary the blink rate
3351  * according to the tx/rx traffic a la the ath driver.
3352  */
3353
3354 static __inline uint32_t
3355 iwi_toggle_event(uint32_t r)
3356 {
3357         return r &~ (IWI_RST_STANDBY | IWI_RST_GATE_ODMA |
3358                      IWI_RST_GATE_IDMA | IWI_RST_GATE_ADMA);
3359 }
3360
3361 static uint32_t
3362 iwi_read_event(struct iwi_softc *sc)
3363 {
3364         return MEM_READ_4(sc, IWI_MEM_EEPROM_EVENT);
3365 }
3366
3367 static void
3368 iwi_write_event(struct iwi_softc *sc, uint32_t v)
3369 {
3370         MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, v);
3371 }
3372
3373 static void
3374 iwi_led_done(void *arg)
3375 {
3376         struct iwi_softc *sc = arg;
3377
3378         sc->sc_blinking = 0;
3379 }
3380
3381 /*
3382  * Turn the activity LED off: flip the pin and then set a timer so no
3383  * update will happen for the specified duration.
3384  */
3385 static void
3386 iwi_led_off(void *arg)
3387 {
3388         struct iwi_softc *sc = arg;
3389         uint32_t v;
3390
3391         v = iwi_read_event(sc);
3392         v &= ~sc->sc_ledpin;
3393         iwi_write_event(sc, iwi_toggle_event(v));
3394         callout_reset(&sc->sc_ledtimer, sc->sc_ledoff, iwi_led_done, sc);
3395 }
3396
3397 /*
3398  * Blink the LED according to the specified on/off times.
3399  */
3400 static void
3401 iwi_led_blink(struct iwi_softc *sc, int on, int off)
3402 {
3403         uint32_t v;
3404
3405         v = iwi_read_event(sc);
3406         v |= sc->sc_ledpin;
3407         iwi_write_event(sc, iwi_toggle_event(v));
3408         sc->sc_blinking = 1;
3409         sc->sc_ledoff = off;
3410         callout_reset(&sc->sc_ledtimer, on, iwi_led_off, sc);
3411 }
3412
3413 static void
3414 iwi_led_event(struct iwi_softc *sc, int event)
3415 {
3416 #define N(a)    (sizeof(a)/sizeof(a[0]))
3417         /* NB: on/off times from the Atheros NDIS driver, w/ permission */
3418         static const struct {
3419                 u_int           rate;           /* tx/rx iwi rate */
3420                 u_int16_t       timeOn;         /* LED on time (ms) */
3421                 u_int16_t       timeOff;        /* LED off time (ms) */
3422         } blinkrates[] = {
3423                 { IWI_RATE_OFDM54, 40,  10 },
3424                 { IWI_RATE_OFDM48, 44,  11 },
3425                 { IWI_RATE_OFDM36, 50,  13 },
3426                 { IWI_RATE_OFDM24, 57,  14 },
3427                 { IWI_RATE_OFDM18, 67,  16 },
3428                 { IWI_RATE_OFDM12, 80,  20 },
3429                 { IWI_RATE_DS11,  100,  25 },
3430                 { IWI_RATE_OFDM9, 133,  34 },
3431                 { IWI_RATE_OFDM6, 160,  40 },
3432                 { IWI_RATE_DS5,   200,  50 },
3433                 {            6,   240,  58 },   /* XXX 3Mb/s if it existed */
3434                 { IWI_RATE_DS2,   267,  66 },
3435                 { IWI_RATE_DS1,   400, 100 },
3436                 {            0,   500, 130 },   /* unknown rate/polling */
3437         };
3438         uint32_t txrate;
3439         int j = 0;                      /* XXX silence compiler */
3440
3441         sc->sc_ledevent = ticks;        /* time of last event */
3442         if (sc->sc_blinking)            /* don't interrupt active blink */
3443                 return;
3444         switch (event) {
3445         case IWI_LED_POLL:
3446                 j = N(blinkrates)-1;
3447                 break;
3448         case IWI_LED_TX:
3449                 /* read current transmission rate from adapter */
3450                 txrate = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE);
3451                 if (blinkrates[sc->sc_txrix].rate != txrate) {
3452                         for (j = 0; j < N(blinkrates)-1; j++)
3453                                 if (blinkrates[j].rate == txrate)
3454                                         break;
3455                         sc->sc_txrix = j;
3456                 } else
3457                         j = sc->sc_txrix;
3458                 break;
3459         case IWI_LED_RX:
3460                 if (blinkrates[sc->sc_rxrix].rate != sc->sc_rxrate) {
3461                         for (j = 0; j < N(blinkrates)-1; j++)
3462                                 if (blinkrates[j].rate == sc->sc_rxrate)
3463                                         break;
3464                         sc->sc_rxrix = j;
3465                 } else
3466                         j = sc->sc_rxrix;
3467                 break;
3468         }
3469         /* XXX beware of overflow */
3470         iwi_led_blink(sc, (blinkrates[j].timeOn * hz) / 1000,
3471                 (blinkrates[j].timeOff * hz) / 1000);
3472 #undef N
3473 }
3474
3475 static int
3476 iwi_sysctl_softled(SYSCTL_HANDLER_ARGS)
3477 {
3478         struct iwi_softc *sc = arg1;
3479         int softled = sc->sc_softled;
3480         int error;
3481
3482         error = sysctl_handle_int(oidp, &softled, 0, req);
3483         if (error || !req->newptr)
3484                 return error;
3485         softled = (softled != 0);
3486         if (softled != sc->sc_softled) {
3487                 if (softled) {
3488                         uint32_t v = iwi_read_event(sc);
3489                         v &= ~sc->sc_ledpin;
3490                         iwi_write_event(sc, iwi_toggle_event(v));
3491                 }
3492                 sc->sc_softled = softled;
3493         }
3494         return 0;
3495 }
3496
3497 static void
3498 iwi_ledattach(struct iwi_softc *sc)
3499 {
3500         struct sysctl_ctx_list *ctx = &sc->sc_sysctl_ctx;
3501         struct sysctl_oid *tree = sc->sc_sysctl_tree;
3502
3503         sc->sc_blinking = 0;
3504         sc->sc_ledstate = 1;
3505         sc->sc_ledidle = (2700*hz)/1000;        /* 2.7sec */
3506         callout_init(&sc->sc_ledtimer);
3507
3508         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3509                 "softled", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
3510                 iwi_sysctl_softled, "I", "enable/disable software LED support");
3511         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3512                 "ledpin", CTLFLAG_RW, &sc->sc_ledpin, 0,
3513                 "pin setting to turn activity LED on");
3514         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3515                 "ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0,
3516                 "idle time for inactivity LED (ticks)");
3517         /* XXX for debugging */
3518         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3519                 "nictype", CTLFLAG_RD, &sc->sc_nictype, 0,
3520                 "NIC type from EEPROM");
3521
3522         sc->sc_ledpin = IWI_RST_LED_ACTIVITY;
3523         sc->sc_softled = 1;
3524
3525         sc->sc_nictype = (iwi_read_prom_word(sc, IWI_EEPROM_NIC) >> 8) & 0xff;
3526         if (sc->sc_nictype == 1) {
3527                 /*
3528                  * NB: led's are reversed.
3529                  */
3530                 sc->sc_ledpin = IWI_RST_LED_ASSOCIATED;
3531         }
3532 }
3533
3534 static void
3535 iwi_scan_start(struct ieee80211com *ic)
3536 {
3537         /* ignore */
3538 }
3539
3540 static void
3541 iwi_set_channel(struct ieee80211com *ic)
3542 {
3543         struct ifnet *ifp = ic->ic_ifp;
3544         struct iwi_softc *sc = ifp->if_softc;
3545         if (sc->fw_state == IWI_FW_IDLE)
3546                 iwi_setcurchan(sc, ic->ic_curchan->ic_ieee);
3547 }
3548
3549 static void
3550 iwi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
3551 {
3552         struct ieee80211vap *vap = ss->ss_vap;
3553         struct ifnet *ifp = vap->iv_ic->ic_ifp;
3554         struct iwi_softc *sc = ifp->if_softc;
3555         IWI_LOCK_DECL;
3556
3557         IWI_LOCK(sc);
3558         if (iwi_scanchan(sc, maxdwell, 0))
3559                 ieee80211_cancel_scan(vap);
3560         IWI_UNLOCK(sc);
3561 }
3562
3563 static void
3564 iwi_scan_mindwell(struct ieee80211_scan_state *ss)
3565 {
3566         /* NB: don't try to abort scan; wait for firmware to finish */
3567 }
3568
3569 static void
3570 iwi_scan_end(struct ieee80211com *ic)
3571 {
3572         struct ifnet *ifp = ic->ic_ifp;
3573         struct iwi_softc *sc = ifp->if_softc;
3574         IWI_LOCK_DECL;
3575
3576         IWI_LOCK(sc);
3577         sc->flags &= ~IWI_FLAG_CHANNEL_SCAN;
3578         /* NB: make sure we're still scanning */
3579         if (sc->fw_state == IWI_FW_SCANNING)
3580                 iwi_cmd(sc, IWI_CMD_ABORT_SCAN, NULL, 0);
3581         IWI_UNLOCK(sc);
3582 }