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  * $FreeBSD: head/sys/dev/iwi/if_iwi.c 298818 2016-04-29 22:14:11Z avos $
  30  */
  31
  32 /*-
  33  * Intel(R) PRO/Wireless 2200BG/2225BG/2915ABG driver
  34  * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
  35  */
  36
  37 #include <sys/param.h>
  38 #include <sys/sysctl.h>
  39 #include <sys/sockio.h>
  40 #include <sys/mbuf.h>
  41 #include <sys/kernel.h>
  42 #include <sys/socket.h>
  43 #include <sys/systm.h>
  44 #include <sys/malloc.h>
  45 #include <sys/lock.h>
  46 #include <sys/module.h>
  47 #include <sys/bus.h>
  48 #include <sys/endian.h>
  49 #include <sys/proc.h>
  50 #include <sys/mount.h>
  51 #include <sys/linker.h>
  52 #include <sys/firmware.h>
  53 #include <sys/taskqueue.h>
  54 #if defined(__DragonFly__)
  55 #include <sys/devfs.h>
  56 #endif
  57
  58 #if !defined(__DragonFly__)
  59 #include <machine/bus.h>
  60 #include <machine/resource.h>
  61 #endif
  62 #include <sys/rman.h>
  63
  64 #if defined(__DragonFly__)
  65 #include <bus/pci/pcivar.h>
  66 #include <bus/pci/pcireg.h>
  67 #else
  68 #include <dev/pci/pcireg.h>
  69 #include <dev/pci/pcivar.h>
  70 #endif
  71
  72 #include <net/bpf.h>
  73 #include <net/if.h>
  74 #include <net/if_var.h>
  75 #include <net/if_arp.h>
  76 #include <net/ethernet.h>
  77 #include <net/if_dl.h>
  78 #include <net/if_media.h>
  79 #include <net/if_types.h>
  80
  81 #if defined(__DragonFly__)
  82 #include <netproto/802_11/ieee80211_var.h>
  83 #include <netproto/802_11/ieee80211_radiotap.h>
  84 #include <netproto/802_11/ieee80211_input.h>
  85 #include <netproto/802_11/ieee80211_regdomain.h>
  86 #else
  87 #include <net80211/ieee80211_var.h>
  88 #include <net80211/ieee80211_radiotap.h>
  89 #include <net80211/ieee80211_input.h>
  90 #include <net80211/ieee80211_regdomain.h>
  91 #endif
  92
  93 #include <netinet/in.h>
  94 #include <netinet/in_systm.h>
  95 #include <netinet/in_var.h>
  96 #include <netinet/ip.h>
  97 #include <netinet/if_ether.h>
  98
  99 #if defined(__DragonFly__)
 100 #include "if_iwireg.h"
 101 #include "if_iwivar.h"
 102 #else
 103 #include <dev/iwi/if_iwireg.h>
 104 #include <dev/iwi/if_iwivar.h>
 105 #endif
 106
 107 #define IWI_DEBUG
 108 #ifdef IWI_DEBUG
 109 #define DPRINTF(x)      do { if (iwi_debug > 0) kprintf x; } while (0)
 110 #define DPRINTFN(n, x)  do { if (iwi_debug >= (n)) kprintf x; } while (0)
 111 int iwi_debug = 0;
 112 SYSCTL_INT(_debug, OID_AUTO, iwi, CTLFLAG_RW, &iwi_debug, 0, "iwi debug level");
 113
 114 static const char *iwi_fw_states[] = {
 115         "IDLE",                 /* IWI_FW_IDLE */
 116         "LOADING",              /* IWI_FW_LOADING */
 117         "ASSOCIATING",          /* IWI_FW_ASSOCIATING */
 118         "DISASSOCIATING",       /* IWI_FW_DISASSOCIATING */
 119         "SCANNING",             /* IWI_FW_SCANNING */
 120 };
 121 #else
 122 #define DPRINTF(x)
 123 #define DPRINTFN(n, x)
 124 #endif
 125
 126 MODULE_DEPEND(iwi, pci,  1, 1, 1);
 127 MODULE_DEPEND(iwi, wlan, 1, 1, 1);
 128 MODULE_DEPEND(iwi, firmware, 1, 1, 1);
 129
 130 enum {
 131         IWI_LED_TX,
 132         IWI_LED_RX,
 133         IWI_LED_POLL,
 134 };
 135
 136 struct iwi_ident {
 137         uint16_t        vendor;
 138         uint16_t        device;
 139         const char      *name;
 140 };
 141
 142 static const struct iwi_ident iwi_ident_table[] = {
 143         { 0x8086, 0x4220, "Intel(R) PRO/Wireless 2200BG" },
 144         { 0x8086, 0x4221, "Intel(R) PRO/Wireless 2225BG" },
 145         { 0x8086, 0x4223, "Intel(R) PRO/Wireless 2915ABG" },
 146         { 0x8086, 0x4224, "Intel(R) PRO/Wireless 2915ABG" },
 147
 148         { 0, 0, NULL }
 149 };
 150
 151 static struct ieee80211vap *iwi_vap_create(struct ieee80211com *,
 152                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
 153                     const uint8_t [IEEE80211_ADDR_LEN],
 154                     const uint8_t [IEEE80211_ADDR_LEN]);
 155 static void     iwi_vap_delete(struct ieee80211vap *);
 156 static void     iwi_dma_map_addr(void *, bus_dma_segment_t *, int, int);
 157 static int      iwi_alloc_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *,
 158                     int);
 159 static void     iwi_reset_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *);
 160 static void     iwi_free_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *);
 161 static int      iwi_alloc_tx_ring(struct iwi_softc *, struct iwi_tx_ring *,
 162                     int, bus_addr_t, bus_addr_t);
 163 static void     iwi_reset_tx_ring(struct iwi_softc *, struct iwi_tx_ring *);
 164 static void     iwi_free_tx_ring(struct iwi_softc *, struct iwi_tx_ring *);
 165 static int      iwi_alloc_rx_ring(struct iwi_softc *, struct iwi_rx_ring *,
 166                     int);
 167 static void     iwi_reset_rx_ring(struct iwi_softc *, struct iwi_rx_ring *);
 168 static void     iwi_free_rx_ring(struct iwi_softc *, struct iwi_rx_ring *);
 169 static struct ieee80211_node *iwi_node_alloc(struct ieee80211vap *,
 170                     const uint8_t [IEEE80211_ADDR_LEN]);
 171 static void     iwi_node_free(struct ieee80211_node *);
 172 static void     iwi_media_status(struct ifnet *, struct ifmediareq *);
 173 static int      iwi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 174 static void     iwi_wme_init(struct iwi_softc *);
 175 static int      iwi_wme_setparams(struct iwi_softc *);
 176 static int      iwi_wme_update(struct ieee80211com *);
 177 static uint16_t iwi_read_prom_word(struct iwi_softc *, uint8_t);
 178 static void     iwi_frame_intr(struct iwi_softc *, struct iwi_rx_data *, int,
 179                     struct iwi_frame *);
 180 static void     iwi_notification_intr(struct iwi_softc *, struct iwi_notif *);
 181 static void     iwi_rx_intr(struct iwi_softc *);
 182 static void     iwi_tx_intr(struct iwi_softc *, struct iwi_tx_ring *);
 183 static void     iwi_intr(void *);
 184 static int      iwi_cmd(struct iwi_softc *, uint8_t, void *, uint8_t);
 185 static void     iwi_write_ibssnode(struct iwi_softc *, const u_int8_t [], int);
 186 static int      iwi_tx_start(struct iwi_softc *, struct mbuf *,
 187                     struct ieee80211_node *, int);
 188 static int      iwi_raw_xmit(struct ieee80211_node *, struct mbuf *,
 189                     const struct ieee80211_bpf_params *);
 190 static void     iwi_start(struct iwi_softc *);
 191 static int      iwi_transmit(struct ieee80211com *, struct mbuf *);
 192 static void     iwi_watchdog(void *);
 193 static void     iwi_parent(struct ieee80211com *);
 194 static void     iwi_stop_master(struct iwi_softc *);
 195 static int      iwi_reset(struct iwi_softc *);
 196 static int      iwi_load_ucode(struct iwi_softc *, const struct iwi_fw *);
 197 static int      iwi_load_firmware(struct iwi_softc *, const struct iwi_fw *);
 198 static void     iwi_release_fw_dma(struct iwi_softc *sc);
 199 static int      iwi_config(struct iwi_softc *);
 200 static int      iwi_get_firmware(struct iwi_softc *, enum ieee80211_opmode);
 201 static void     iwi_put_firmware(struct iwi_softc *);
 202 static void     iwi_monitor_scan(void *, int);
 203 static int      iwi_scanchan(struct iwi_softc *, unsigned long, int);
 204 static void     iwi_scan_start(struct ieee80211com *);
 205 static void     iwi_scan_end(struct ieee80211com *);
 206 static void     iwi_set_channel(struct ieee80211com *);
 207 static void     iwi_scan_curchan(struct ieee80211_scan_state *, unsigned long maxdwell);
 208 static void     iwi_scan_mindwell(struct ieee80211_scan_state *);
 209 static int      iwi_auth_and_assoc(struct iwi_softc *, struct ieee80211vap *);
 210 static void     iwi_disassoc(void *, int);
 211 static int      iwi_disassociate(struct iwi_softc *, int quiet);
 212 static void     iwi_init_locked(struct iwi_softc *);
 213 static void     iwi_init(void *);
 214 static int      iwi_init_fw_dma(struct iwi_softc *, int);
 215 static void     iwi_stop_locked(void *);
 216 static void     iwi_stop(struct iwi_softc *);
 217 static void     iwi_restart(void *, int);
 218 static int      iwi_getrfkill(struct iwi_softc *);
 219 static void     iwi_radio_on(void *, int);
 220 static void     iwi_radio_off(void *, int);
 221 static void     iwi_sysctlattach(struct iwi_softc *);
 222 static void     iwi_led_event(struct iwi_softc *, int);
 223 static void     iwi_ledattach(struct iwi_softc *);
 224
 225 static int iwi_probe(device_t);
 226 static int iwi_attach(device_t);
 227 static int iwi_detach(device_t);
 228 static int iwi_shutdown(device_t);
 229 static int iwi_suspend(device_t);
 230 static int iwi_resume(device_t);
 231
 232 static device_method_t iwi_methods[] = {
 233         /* Device interface */
 234         DEVMETHOD(device_probe,         iwi_probe),
 235         DEVMETHOD(device_attach,        iwi_attach),
 236         DEVMETHOD(device_detach,        iwi_detach),
 237         DEVMETHOD(device_shutdown,      iwi_shutdown),
 238         DEVMETHOD(device_suspend,       iwi_suspend),
 239         DEVMETHOD(device_resume,        iwi_resume),
 240
 241         DEVMETHOD_END
 242 };
 243
 244 static driver_t iwi_driver = {
 245         "iwi",
 246         iwi_methods,
 247         sizeof (struct iwi_softc)
 248 };
 249
 250 static devclass_t iwi_devclass;
 251
 252 DRIVER_MODULE(iwi, pci, iwi_driver, iwi_devclass, NULL, NULL);
 253
 254 MODULE_VERSION(iwi, 1);
 255
 256 static __inline uint8_t
 257 MEM_READ_1(struct iwi_softc *sc, uint32_t addr)
 258 {
 259         CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
 260         return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA);
 261 }
 262
 263 static __inline uint32_t
 264 MEM_READ_4(struct iwi_softc *sc, uint32_t addr)
 265 {
 266         CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
 267         return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA);
 268 }
 269
 270 static int
 271 iwi_probe(device_t dev)
 272 {
 273         const struct iwi_ident *ident;
 274
 275         for (ident = iwi_ident_table; ident->name != NULL; ident++) {
 276                 if (pci_get_vendor(dev) == ident->vendor &&
 277                     pci_get_device(dev) == ident->device) {
 278                         device_set_desc(dev, ident->name);
 279                         return (BUS_PROBE_DEFAULT);
 280                 }
 281         }
 282         return ENXIO;
 283 }
 284
 285 static int
 286 iwi_attach(device_t dev)
 287 {
 288         struct iwi_softc *sc = device_get_softc(dev);
 289         struct ieee80211com *ic = &sc->sc_ic;
 290         uint16_t val;
 291         uint8_t bands[IEEE80211_MODE_BYTES];
 292         int i, error;
 293
 294         sc->sc_dev = dev;
 295
 296         IWI_LOCK_INIT(sc);
 297         mbufq_init(&sc->sc_snd, ifqmaxlen);
 298
 299 #if defined(__DragonFly__)
 300         devfs_clone_bitmap_init(&sc->sc_unr);
 301 #else
 302         sc->sc_unr = new_unrhdr(1, IWI_MAX_IBSSNODE-1, &sc->sc_mtx);
 303 #endif
 304
 305         TASK_INIT(&sc->sc_radiontask, 0, iwi_radio_on, sc);
 306         TASK_INIT(&sc->sc_radiofftask, 0, iwi_radio_off, sc);
 307         TASK_INIT(&sc->sc_restarttask, 0, iwi_restart, sc);
 308         TASK_INIT(&sc->sc_disassoctask, 0, iwi_disassoc, sc);
 309         TASK_INIT(&sc->sc_monitortask, 0, iwi_monitor_scan, sc);
 310
 311 #if defined(__DragonFly__)
 312         callout_init_lk(&sc->sc_wdtimer, &sc->sc_lock);
 313         callout_init_lk(&sc->sc_rftimer, &sc->sc_lock);
 314 #else
 315         callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
 316         callout_init_mtx(&sc->sc_rftimer, &sc->sc_mtx, 0);
 317 #endif
 318
 319         pci_write_config(dev, 0x41, 0, 1);
 320
 321         /* enable bus-mastering */
 322         pci_enable_busmaster(dev);
 323
 324         i = PCIR_BAR(0);
 325         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
 326         if (sc->mem == NULL) {
 327                 device_printf(dev, "could not allocate memory resource\n");
 328                 goto fail;
 329         }
 330
 331         sc->sc_st = rman_get_bustag(sc->mem);
 332         sc->sc_sh = rman_get_bushandle(sc->mem);
 333
 334         i = 0;
 335         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
 336             RF_ACTIVE | RF_SHAREABLE);
 337         if (sc->irq == NULL) {
 338                 device_printf(dev, "could not allocate interrupt resource\n");
 339                 goto fail;
 340         }
 341
 342         if (iwi_reset(sc) != 0) {
 343                 device_printf(dev, "could not reset adapter\n");
 344                 goto fail;
 345         }
 346
 347         /*
 348          * Allocate rings.
 349          */
 350         if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) {
 351                 device_printf(dev, "could not allocate Cmd ring\n");
 352                 goto fail;
 353         }
 354
 355         for (i = 0; i < 4; i++) {
 356                 error = iwi_alloc_tx_ring(sc, &sc->txq[i], IWI_TX_RING_COUNT,
 357                     IWI_CSR_TX1_RIDX + i * 4,
 358                     IWI_CSR_TX1_WIDX + i * 4);
 359                 if (error != 0) {
 360                         device_printf(dev, "could not allocate Tx ring %d\n",
 361                                 i+i);
 362                         goto fail;
 363                 }
 364         }
 365
 366         if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) {
 367                 device_printf(dev, "could not allocate Rx ring\n");
 368                 goto fail;
 369         }
 370
 371         iwi_wme_init(sc);
 372
 373         ic->ic_softc = sc;
 374         ic->ic_name = device_get_nameunit(dev);
 375         ic->ic_opmode = IEEE80211_M_STA;
 376         ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
 377
 378         /* set device capabilities */
 379         ic->ic_caps =
 380               IEEE80211_C_STA           /* station mode supported */
 381             | IEEE80211_C_IBSS          /* IBSS mode supported */
 382             | IEEE80211_C_MONITOR       /* monitor mode supported */
 383             | IEEE80211_C_PMGT          /* power save supported */
 384             | IEEE80211_C_SHPREAMBLE    /* short preamble supported */
 385             | IEEE80211_C_WPA           /* 802.11i */
 386             | IEEE80211_C_WME           /* 802.11e */
 387 #if 0
 388             | IEEE80211_C_BGSCAN        /* capable of bg scanning */
 389 #endif
 390             ;
 391
 392         /* read MAC address from EEPROM */
 393         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0);
 394         ic->ic_macaddr[0] = val & 0xff;
 395         ic->ic_macaddr[1] = val >> 8;
 396         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1);
 397         ic->ic_macaddr[2] = val & 0xff;
 398         ic->ic_macaddr[3] = val >> 8;
 399         val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2);
 400         ic->ic_macaddr[4] = val & 0xff;
 401         ic->ic_macaddr[5] = val >> 8;
 402
 403         memset(bands, 0, sizeof(bands));
 404         setbit(bands, IEEE80211_MODE_11B);
 405         setbit(bands, IEEE80211_MODE_11G);
 406         if (pci_get_device(dev) >= 0x4223)
 407                 setbit(bands, IEEE80211_MODE_11A);
 408         ieee80211_init_channels(ic, NULL, bands);
 409
 410         ieee80211_ifattach(ic);
 411         /* override default methods */
 412         ic->ic_node_alloc = iwi_node_alloc;
 413         sc->sc_node_free = ic->ic_node_free;
 414         ic->ic_node_free = iwi_node_free;
 415         ic->ic_raw_xmit = iwi_raw_xmit;
 416         ic->ic_scan_start = iwi_scan_start;
 417         ic->ic_scan_end = iwi_scan_end;
 418         ic->ic_set_channel = iwi_set_channel;
 419         ic->ic_scan_curchan = iwi_scan_curchan;
 420         ic->ic_scan_mindwell = iwi_scan_mindwell;
 421         ic->ic_wme.wme_update = iwi_wme_update;
 422
 423         ic->ic_vap_create = iwi_vap_create;
 424         ic->ic_vap_delete = iwi_vap_delete;
 425         ic->ic_transmit = iwi_transmit;
 426         ic->ic_parent = iwi_parent;
 427
 428         ieee80211_radiotap_attach(ic,
 429             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 430                 IWI_TX_RADIOTAP_PRESENT,
 431             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 432                 IWI_RX_RADIOTAP_PRESENT);
 433
 434         iwi_sysctlattach(sc);
 435         iwi_ledattach(sc);
 436
 437         /*
 438          * Hook our interrupt after all initialization is complete.
 439          */
 440 #if defined(__DragonFly__)
 441         error = bus_setup_intr(dev, sc->irq, INTR_MPSAFE,
 442             iwi_intr, sc, &sc->sc_ih, &wlan_global_serializer);
 443 #else
 444         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 445             NULL, iwi_intr, sc, &sc->sc_ih);
 446 #endif
 447         if (error != 0) {
 448                 device_printf(dev, "could not set up interrupt\n");
 449                 goto fail;
 450         }
 451
 452         if (bootverbose)
 453                 ieee80211_announce(ic);
 454
 455         return 0;
 456 fail:
 457         /* XXX fix */
 458         iwi_detach(dev);
 459         return ENXIO;
 460 }
 461
 462 static int
 463 iwi_detach(device_t dev)
 464 {
 465         struct iwi_softc *sc = device_get_softc(dev);
 466         struct ieee80211com *ic = &sc->sc_ic;
 467
 468         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 469
 470         /* NB: do early to drain any pending tasks */
 471         ieee80211_draintask(ic, &sc->sc_radiontask);
 472         ieee80211_draintask(ic, &sc->sc_radiofftask);
 473         ieee80211_draintask(ic, &sc->sc_restarttask);
 474         ieee80211_draintask(ic, &sc->sc_disassoctask);
 475         ieee80211_draintask(ic, &sc->sc_monitortask);
 476
 477         iwi_stop(sc);
 478
 479         ieee80211_ifdetach(ic);
 480
 481         iwi_put_firmware(sc);
 482         iwi_release_fw_dma(sc);
 483
 484         iwi_free_cmd_ring(sc, &sc->cmdq);
 485         iwi_free_tx_ring(sc, &sc->txq[0]);
 486         iwi_free_tx_ring(sc, &sc->txq[1]);
 487         iwi_free_tx_ring(sc, &sc->txq[2]);
 488         iwi_free_tx_ring(sc, &sc->txq[3]);
 489         iwi_free_rx_ring(sc, &sc->rxq);
 490
 491         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 492
 493         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
 494             sc->mem);
 495
 496 #if defined(__DragonFly__)
 497         devfs_clone_bitmap_uninit(&sc->sc_unr);
 498 #else
 499         delete_unrhdr(sc->sc_unr);
 500 #endif
 501         mbufq_drain(&sc->sc_snd);
 502
 503         IWI_LOCK_DESTROY(sc);
 504
 505         return 0;
 506 }
 507
 508 static struct ieee80211vap *
 509 iwi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 510     enum ieee80211_opmode opmode, int flags,
 511     const uint8_t bssid[IEEE80211_ADDR_LEN],
 512     const uint8_t mac[IEEE80211_ADDR_LEN])
 513 {
 514         struct iwi_softc *sc = ic->ic_softc;
 515         struct iwi_vap *ivp;
 516         struct ieee80211vap *vap;
 517         int i;
 518
 519         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 520                 return NULL;
 521         /*
 522          * Get firmware image (and possibly dma memory) on mode change.
 523          */
 524         if (iwi_get_firmware(sc, opmode))
 525                 return NULL;
 526         /* allocate DMA memory for mapping firmware image */
 527         i = sc->fw_fw.size;
 528         if (sc->fw_boot.size > i)
 529                 i = sc->fw_boot.size;
 530         /* XXX do we dma the ucode as well ? */
 531         if (sc->fw_uc.size > i)
 532                 i = sc->fw_uc.size;
 533         if (iwi_init_fw_dma(sc, i))
 534                 return NULL;
 535
 536         ivp = kmalloc(sizeof(struct iwi_vap), M_80211_VAP, M_WAITOK | M_ZERO);
 537         vap = &ivp->iwi_vap;
 538         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
 539         /* override the default, the setting comes from the linux driver */
 540         vap->iv_bmissthreshold = 24;
 541         /* override with driver methods */
 542         ivp->iwi_newstate = vap->iv_newstate;
 543         vap->iv_newstate = iwi_newstate;
 544
 545         /* complete setup */
 546         ieee80211_vap_attach(vap, ieee80211_media_change, iwi_media_status,
 547             mac);
 548         ic->ic_opmode = opmode;
 549         return vap;
 550 }
 551
 552 static void
 553 iwi_vap_delete(struct ieee80211vap *vap)
 554 {
 555         struct iwi_vap *ivp = IWI_VAP(vap);
 556
 557         ieee80211_vap_detach(vap);
 558         kfree(ivp, M_80211_VAP);
 559 }
 560
 561 static void
 562 iwi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
 563 {
 564         if (error != 0)
 565                 return;
 566
 567         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
 568
 569         *(bus_addr_t *)arg = segs[0].ds_addr;
 570 }
 571
 572 static int
 573 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, int count)
 574 {
 575         int error;
 576
 577         ring->count = count;
 578         ring->queued = 0;
 579         ring->cur = ring->next = 0;
 580
 581 #if defined(__DragonFly__)
 582         error = bus_dma_tag_create(NULL, 4, 0,
 583             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
 584             count * IWI_CMD_DESC_SIZE, 1, count * IWI_CMD_DESC_SIZE,
 585             0 , &ring->desc_dmat);
 586 #else
 587         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
 588             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 589             count * IWI_CMD_DESC_SIZE, 1, count * IWI_CMD_DESC_SIZE, 0,
 590             NULL, NULL, &ring->desc_dmat);
 591 #endif
 592         if (error != 0) {
 593                 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
 594                 goto fail;
 595         }
 596
 597         error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
 598             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
 599         if (error != 0) {
 600                 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
 601                 goto fail;
 602         }
 603
 604         error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
 605             count * IWI_CMD_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
 606         if (error != 0) {
 607                 device_printf(sc->sc_dev, "could not load desc DMA map\n");
 608                 goto fail;
 609         }
 610
 611         return 0;
 612
 613 fail:   iwi_free_cmd_ring(sc, ring);
 614         return error;
 615 }
 616
 617 static void
 618 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
 619 {
 620         ring->queued = 0;
 621         ring->cur = ring->next = 0;
 622 }
 623
 624 static void
 625 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
 626 {
 627         if (ring->desc != NULL) {
 628                 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
 629                     BUS_DMASYNC_POSTWRITE);
 630                 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
 631                 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
 632         }
 633
 634         if (ring->desc_dmat != NULL)
 635                 bus_dma_tag_destroy(ring->desc_dmat);
 636 }
 637
 638 static int
 639 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, int count,
 640     bus_addr_t csr_ridx, bus_addr_t csr_widx)
 641 {
 642         int i, error;
 643
 644         ring->count = count;
 645         ring->queued = 0;
 646         ring->cur = ring->next = 0;
 647         ring->csr_ridx = csr_ridx;
 648         ring->csr_widx = csr_widx;
 649
 650 #if defined(__DragonFly__)
 651         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 652             BUS_SPACE_MAXADDR, count * IWI_TX_DESC_SIZE, 1,
 653             count * IWI_TX_DESC_SIZE, 0, &ring->desc_dmat);
 654 #else
 655         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
 656             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 657             count * IWI_TX_DESC_SIZE, 1, count * IWI_TX_DESC_SIZE, 0, NULL,
 658             NULL, &ring->desc_dmat);
 659 #endif
 660         if (error != 0) {
 661                 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
 662                 goto fail;
 663         }
 664
 665         error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
 666             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
 667         if (error != 0) {
 668                 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
 669                 goto fail;
 670         }
 671
 672         error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
 673             count * IWI_TX_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
 674         if (error != 0) {
 675                 device_printf(sc->sc_dev, "could not load desc DMA map\n");
 676                 goto fail;
 677         }
 678
 679         ring->data = kmalloc(count * sizeof (struct iwi_tx_data), M_DEVBUF,
 680             M_WAITOK | M_ZERO);
 681         if (ring->data == NULL) {
 682                 device_printf(sc->sc_dev, "could not allocate soft data\n");
 683                 error = ENOMEM;
 684                 goto fail;
 685         }
 686
 687 #if defined(__DragonFly__)
 688         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 689             BUS_SPACE_MAXADDR, MCLBYTES, IWI_MAX_NSEG,
 690             MCLBYTES, 0, &ring->data_dmat);
 691 #else
 692         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 693         BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
 694         IWI_MAX_NSEG, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
 695 #endif
 696         if (error != 0) {
 697                 device_printf(sc->sc_dev, "could not create data DMA tag\n");
 698                 goto fail;
 699         }
 700
 701         for (i = 0; i < count; i++) {
 702                 error = bus_dmamap_create(ring->data_dmat, 0,
 703                     &ring->data[i].map);
 704                 if (error != 0) {
 705                         device_printf(sc->sc_dev, "could not create DMA map\n");
 706                         goto fail;
 707                 }
 708         }
 709
 710         return 0;
 711
 712 fail:   iwi_free_tx_ring(sc, ring);
 713         return error;
 714 }
 715
 716 static void
 717 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
 718 {
 719         struct iwi_tx_data *data;
 720         int i;
 721
 722         for (i = 0; i < ring->count; i++) {
 723                 data = &ring->data[i];
 724
 725                 if (data->m != NULL) {
 726                         bus_dmamap_sync(ring->data_dmat, data->map,
 727                             BUS_DMASYNC_POSTWRITE);
 728                         bus_dmamap_unload(ring->data_dmat, data->map);
 729                         m_freem(data->m);
 730                         data->m = NULL;
 731                 }
 732
 733                 if (data->ni != NULL) {
 734                         ieee80211_free_node(data->ni);
 735                         data->ni = NULL;
 736                 }
 737         }
 738
 739         ring->queued = 0;
 740         ring->cur = ring->next = 0;
 741 }
 742
 743 static void
 744 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
 745 {
 746         struct iwi_tx_data *data;
 747         int i;
 748
 749         if (ring->desc != NULL) {
 750                 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
 751                     BUS_DMASYNC_POSTWRITE);
 752                 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
 753                 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
 754         }
 755
 756         if (ring->desc_dmat != NULL)
 757                 bus_dma_tag_destroy(ring->desc_dmat);
 758
 759         if (ring->data != NULL) {
 760                 for (i = 0; i < ring->count; i++) {
 761                         data = &ring->data[i];
 762
 763                         if (data->m != NULL) {
 764                                 bus_dmamap_sync(ring->data_dmat, data->map,
 765                                     BUS_DMASYNC_POSTWRITE);
 766                                 bus_dmamap_unload(ring->data_dmat, data->map);
 767                                 m_freem(data->m);
 768                         }
 769
 770                         if (data->ni != NULL)
 771                                 ieee80211_free_node(data->ni);
 772
 773                         if (data->map != NULL)
 774                                 bus_dmamap_destroy(ring->data_dmat, data->map);
 775                 }
 776
 777                 kfree(ring->data, M_DEVBUF);
 778         }
 779
 780         if (ring->data_dmat != NULL)
 781                 bus_dma_tag_destroy(ring->data_dmat);
 782 }
 783
 784 static int
 785 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, int count)
 786 {
 787         struct iwi_rx_data *data;
 788         int i, error;
 789
 790         ring->count = count;
 791         ring->cur = 0;
 792
 793         ring->data = kmalloc(count * sizeof (struct iwi_rx_data), M_DEVBUF,
 794             M_WAITOK | M_ZERO);
 795         if (ring->data == NULL) {
 796                 device_printf(sc->sc_dev, "could not allocate soft data\n");
 797                 error = ENOMEM;
 798                 goto fail;
 799         }
 800
 801 #if defined(__DragonFly__)
 802         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 803             BUS_SPACE_MAXADDR, MCLBYTES, 1, MCLBYTES,
 804             0, &ring->data_dmat);
 805 #else
 806         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 807             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
 808             1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
 809 #endif
 810         if (error != 0) {
 811                 device_printf(sc->sc_dev, "could not create data DMA tag\n");
 812                 goto fail;
 813         }
 814
 815         for (i = 0; i < count; i++) {
 816                 data = &ring->data[i];
 817
 818                 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
 819                 if (error != 0) {
 820                         device_printf(sc->sc_dev, "could not create DMA map\n");
 821                         goto fail;
 822                 }
 823
 824                 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 825                 if (data->m == NULL) {
 826                         device_printf(sc->sc_dev,
 827                             "could not allocate rx mbuf\n");
 828                         error = ENOMEM;
 829                         goto fail;
 830                 }
 831
 832                 error = bus_dmamap_load(ring->data_dmat, data->map,
 833                     mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
 834                     &data->physaddr, 0);
 835                 if (error != 0) {
 836                         device_printf(sc->sc_dev,
 837                             "could not load rx buf DMA map");
 838                         goto fail;
 839                 }
 840
 841                 data->reg = IWI_CSR_RX_BASE + i * 4;
 842         }
 843
 844         return 0;
 845
 846 fail:   iwi_free_rx_ring(sc, ring);
 847         return error;
 848 }
 849
 850 static void
 851 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
 852 {
 853         ring->cur = 0;
 854 }
 855
 856 static void
 857 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
 858 {
 859         struct iwi_rx_data *data;
 860         int i;
 861
 862         if (ring->data != NULL) {
 863                 for (i = 0; i < ring->count; i++) {
 864                         data = &ring->data[i];
 865
 866                         if (data->m != NULL) {
 867                                 bus_dmamap_sync(ring->data_dmat, data->map,
 868                                     BUS_DMASYNC_POSTREAD);
 869                                 bus_dmamap_unload(ring->data_dmat, data->map);
 870                                 m_freem(data->m);
 871                         }
 872
 873                         if (data->map != NULL)
 874                                 bus_dmamap_destroy(ring->data_dmat, data->map);
 875                 }
 876
 877                 kfree(ring->data, M_DEVBUF);
 878         }
 879
 880         if (ring->data_dmat != NULL)
 881                 bus_dma_tag_destroy(ring->data_dmat);
 882 }
 883
 884 static int
 885 iwi_shutdown(device_t dev)
 886 {
 887         struct iwi_softc *sc = device_get_softc(dev);
 888
 889         iwi_stop(sc);
 890         iwi_put_firmware(sc);           /* ??? XXX */
 891
 892         return 0;
 893 }
 894
 895 static int
 896 iwi_suspend(device_t dev)
 897 {
 898         struct iwi_softc *sc = device_get_softc(dev);
 899         struct ieee80211com *ic = &sc->sc_ic;
 900
 901         ieee80211_suspend_all(ic);
 902         return 0;
 903 }
 904
 905 static int
 906 iwi_resume(device_t dev)
 907 {
 908         struct iwi_softc *sc = device_get_softc(dev);
 909         struct ieee80211com *ic = &sc->sc_ic;
 910
 911         pci_write_config(dev, 0x41, 0, 1);
 912
 913         ieee80211_resume_all(ic);
 914         return 0;
 915 }
 916
 917 static struct ieee80211_node *
 918 iwi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
 919 {
 920         struct iwi_node *in;
 921
 922         in = kmalloc(sizeof (struct iwi_node), M_80211_NODE, M_INTWAIT | M_ZERO);
 923         if (in == NULL)
 924                 return NULL;
 925         /* XXX assign sta table entry for adhoc */
 926         in->in_station = -1;
 927
 928         return &in->in_node;
 929 }
 930
 931 static void
 932 iwi_node_free(struct ieee80211_node *ni)
 933 {
 934         struct ieee80211com *ic = ni->ni_ic;
 935         struct iwi_softc *sc = ic->ic_softc;
 936         struct iwi_node *in = (struct iwi_node *)ni;
 937
 938         if (in->in_station != -1) {
 939 #if defined(__DragonFly__)
 940                 DPRINTF(("%s mac %s station %u\n", __func__,
 941                     ether_sprintf(ni->ni_macaddr), in->in_station));
 942 #else
 943                 DPRINTF(("%s mac %6D station %u\n", __func__,
 944                     ni->ni_macaddr, ":", in->in_station));
 945 #endif
 946 #if defined(__DragonFly__)
 947                 devfs_clone_bitmap_put(&sc->sc_unr, in->in_station);
 948 #else
 949                 free_unr(sc->sc_unr, in->in_station);
 950 #endif
 951         }
 952
 953         sc->sc_node_free(ni);
 954 }
 955
 956 /*
 957  * Convert h/w rate code to IEEE rate code.
 958  */
 959 static int
 960 iwi_cvtrate(int iwirate)
 961 {
 962         switch (iwirate) {
 963         case IWI_RATE_DS1:      return 2;
 964         case IWI_RATE_DS2:      return 4;
 965         case IWI_RATE_DS5:      return 11;
 966         case IWI_RATE_DS11:     return 22;
 967         case IWI_RATE_OFDM6:    return 12;
 968         case IWI_RATE_OFDM9:    return 18;
 969         case IWI_RATE_OFDM12:   return 24;
 970         case IWI_RATE_OFDM18:   return 36;
 971         case IWI_RATE_OFDM24:   return 48;
 972         case IWI_RATE_OFDM36:   return 72;
 973         case IWI_RATE_OFDM48:   return 96;
 974         case IWI_RATE_OFDM54:   return 108;
 975         }
 976         return 0;
 977 }
 978
 979 /*
 980  * The firmware automatically adapts the transmit speed.  We report its current
 981  * value here.
 982  */
 983 static void
 984 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 985 {
 986         struct ieee80211vap *vap = ifp->if_softc;
 987         struct ieee80211com *ic = vap->iv_ic;
 988         struct iwi_softc *sc = ic->ic_softc;
 989         struct ieee80211_node *ni;
 990
 991         /* read current transmission rate from adapter */
 992         ni = ieee80211_ref_node(vap->iv_bss);
 993         ni->ni_txrate =
 994             iwi_cvtrate(CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE));
 995         ieee80211_free_node(ni);
 996         ieee80211_media_status(ifp, imr);
 997 }
 998
 999 static int
1000 iwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1001 {
1002         struct iwi_vap *ivp = IWI_VAP(vap);
1003         struct ieee80211com *ic = vap->iv_ic;
1004         struct iwi_softc *sc = ic->ic_softc;
1005         IWI_LOCK_DECL;
1006
1007         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
1008                 ieee80211_state_name[vap->iv_state],
1009                 ieee80211_state_name[nstate], sc->flags));
1010
1011         IEEE80211_UNLOCK(ic);
1012         IWI_LOCK(sc);
1013         switch (nstate) {
1014         case IEEE80211_S_INIT:
1015                 /*
1016                  * NB: don't try to do this if iwi_stop_master has
1017                  *     shutdown the firmware and disabled interrupts.
1018                  */
1019                 if (vap->iv_state == IEEE80211_S_RUN &&
1020                     (sc->flags & IWI_FLAG_FW_INITED))
1021                         iwi_disassociate(sc, 0);
1022                 break;
1023         case IEEE80211_S_AUTH:
1024                 iwi_auth_and_assoc(sc, vap);
1025                 break;
1026         case IEEE80211_S_RUN:
1027                 if (vap->iv_opmode == IEEE80211_M_IBSS &&
1028                     vap->iv_state == IEEE80211_S_SCAN) {
1029                         /*
1030                          * XXX when joining an ibss network we are called
1031                          * with a SCAN -> RUN transition on scan complete.
1032                          * Use that to call iwi_auth_and_assoc.  On completing
1033                          * the join we are then called again with an
1034                          * AUTH -> RUN transition and we want to do nothing.
1035                          * This is all totally bogus and needs to be redone.
1036                          */
1037                         iwi_auth_and_assoc(sc, vap);
1038                 } else if (vap->iv_opmode == IEEE80211_M_MONITOR)
1039                         ieee80211_runtask(ic, &sc->sc_monitortask);
1040                 break;
1041         case IEEE80211_S_ASSOC:
1042                 /*
1043                  * If we are transitioning from AUTH then just wait
1044                  * for the ASSOC status to come back from the firmware.
1045                  * Otherwise we need to issue the association request.
1046                  */
1047                 if (vap->iv_state == IEEE80211_S_AUTH)
1048                         break;
1049                 iwi_auth_and_assoc(sc, vap);
1050                 break;
1051         default:
1052                 break;
1053         }
1054         IWI_UNLOCK(sc);
1055         IEEE80211_LOCK(ic);
1056         return ivp->iwi_newstate(vap, nstate, arg);
1057 }
1058
1059 /*
1060  * WME parameters coming from IEEE 802.11e specification.  These values are
1061  * already declared in ieee80211_proto.c, but they are static so they can't
1062  * be reused here.
1063  */
1064 static const struct wmeParams iwi_wme_cck_params[WME_NUM_AC] = {
1065         { 0, 3, 5,  7,   0 },   /* WME_AC_BE */
1066         { 0, 3, 5, 10,   0 },   /* WME_AC_BK */
1067         { 0, 2, 4,  5, 188 },   /* WME_AC_VI */
1068         { 0, 2, 3,  4, 102 }    /* WME_AC_VO */
1069 };
1070
1071 static const struct wmeParams iwi_wme_ofdm_params[WME_NUM_AC] = {
1072         { 0, 3, 4,  6,   0 },   /* WME_AC_BE */
1073         { 0, 3, 4, 10,   0 },   /* WME_AC_BK */
1074         { 0, 2, 3,  4,  94 },   /* WME_AC_VI */
1075         { 0, 2, 2,  3,  47 }    /* WME_AC_VO */
1076 };
1077 #define IWI_EXP2(v)     htole16((1 << (v)) - 1)
1078 #define IWI_USEC(v)     htole16(IEEE80211_TXOP_TO_US(v))
1079
1080 static void
1081 iwi_wme_init(struct iwi_softc *sc)
1082 {
1083         const struct wmeParams *wmep;
1084         int ac;
1085
1086         memset(sc->wme, 0, sizeof sc->wme);
1087         for (ac = 0; ac < WME_NUM_AC; ac++) {
1088                 /* set WME values for CCK modulation */
1089                 wmep = &iwi_wme_cck_params[ac];
1090                 sc->wme[1].aifsn[ac] = wmep->wmep_aifsn;
1091                 sc->wme[1].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1092                 sc->wme[1].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1093                 sc->wme[1].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1094                 sc->wme[1].acm[ac]   = wmep->wmep_acm;
1095
1096                 /* set WME values for OFDM modulation */
1097                 wmep = &iwi_wme_ofdm_params[ac];
1098                 sc->wme[2].aifsn[ac] = wmep->wmep_aifsn;
1099                 sc->wme[2].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1100                 sc->wme[2].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1101                 sc->wme[2].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1102                 sc->wme[2].acm[ac]   = wmep->wmep_acm;
1103         }
1104 }
1105
1106 static int
1107 iwi_wme_setparams(struct iwi_softc *sc)
1108 {
1109         struct ieee80211com *ic = &sc->sc_ic;
1110         const struct wmeParams *wmep;
1111         int ac;
1112
1113         for (ac = 0; ac < WME_NUM_AC; ac++) {
1114                 /* set WME values for current operating mode */
1115                 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac];
1116                 sc->wme[0].aifsn[ac] = wmep->wmep_aifsn;
1117                 sc->wme[0].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1118                 sc->wme[0].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1119                 sc->wme[0].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1120                 sc->wme[0].acm[ac]   = wmep->wmep_acm;
1121         }
1122
1123         DPRINTF(("Setting WME parameters\n"));
1124         return iwi_cmd(sc, IWI_CMD_SET_WME_PARAMS, sc->wme, sizeof sc->wme);
1125 }
1126 #undef IWI_USEC
1127 #undef IWI_EXP2
1128
1129 static int
1130 iwi_wme_update(struct ieee80211com *ic)
1131 {
1132         struct iwi_softc *sc = ic->ic_softc;
1133         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1134         IWI_LOCK_DECL;
1135
1136         /*
1137          * We may be called to update the WME parameters in
1138          * the adapter at various places.  If we're already
1139          * associated then initiate the request immediately;
1140          * otherwise we assume the params will get sent down
1141          * to the adapter as part of the work iwi_auth_and_assoc
1142          * does.
1143          */
1144         if (vap->iv_state == IEEE80211_S_RUN) {
1145                 IWI_LOCK(sc);
1146                 iwi_wme_setparams(sc);
1147                 IWI_UNLOCK(sc);
1148         }
1149         return (0);
1150 }
1151
1152 static int
1153 iwi_wme_setie(struct iwi_softc *sc)
1154 {
1155         struct ieee80211_wme_info wme;
1156
1157         memset(&wme, 0, sizeof wme);
1158         wme.wme_id = IEEE80211_ELEMID_VENDOR;
1159         wme.wme_len = sizeof (struct ieee80211_wme_info) - 2;
1160         wme.wme_oui[0] = 0x00;
1161         wme.wme_oui[1] = 0x50;
1162         wme.wme_oui[2] = 0xf2;
1163         wme.wme_type = WME_OUI_TYPE;
1164         wme.wme_subtype = WME_INFO_OUI_SUBTYPE;
1165         wme.wme_version = WME_VERSION;
1166         wme.wme_info = 0;
1167
1168         DPRINTF(("Setting WME IE (len=%u)\n", wme.wme_len));
1169         return iwi_cmd(sc, IWI_CMD_SET_WMEIE, &wme, sizeof wme);
1170 }
1171
1172 /*
1173  * Read 16 bits at address 'addr' from the serial EEPROM.
1174  */
1175 static uint16_t
1176 iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr)
1177 {
1178         uint32_t tmp;
1179         uint16_t val;
1180         int n;
1181
1182         /* clock C once before the first command */
1183         IWI_EEPROM_CTL(sc, 0);
1184         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1185         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1186         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1187
1188         /* write start bit (1) */
1189         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1190         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1191
1192         /* write READ opcode (10) */
1193         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1194         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1195         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1196         IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1197
1198         /* write address A7-A0 */
1199         for (n = 7; n >= 0; n--) {
1200                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1201                     (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D));
1202                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1203                     (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C);
1204         }
1205
1206         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1207
1208         /* read data Q15-Q0 */
1209         val = 0;
1210         for (n = 15; n >= 0; n--) {
1211                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1212                 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1213                 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL);
1214                 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n;
1215         }
1216
1217         IWI_EEPROM_CTL(sc, 0);
1218
1219         /* clear Chip Select and clock C */
1220         IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1221         IWI_EEPROM_CTL(sc, 0);
1222         IWI_EEPROM_CTL(sc, IWI_EEPROM_C);
1223
1224         return val;
1225 }
1226
1227 static void
1228 iwi_setcurchan(struct iwi_softc *sc, int chan)
1229 {
1230         struct ieee80211com *ic = &sc->sc_ic;
1231
1232         sc->curchan = chan;
1233         ieee80211_radiotap_chan_change(ic);
1234 }
1235
1236 static void
1237 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i,
1238     struct iwi_frame *frame)
1239 {
1240         struct ieee80211com *ic = &sc->sc_ic;
1241         struct mbuf *mnew, *m;
1242         struct ieee80211_node *ni;
1243         int type, error, framelen;
1244         int8_t rssi, nf;
1245         IWI_LOCK_DECL;
1246
1247         framelen = le16toh(frame->len);
1248         if (framelen < IEEE80211_MIN_LEN || framelen > MCLBYTES) {
1249                 /*
1250                  * XXX >MCLBYTES is bogus as it means the h/w dma'd
1251                  *     out of bounds; need to figure out how to limit
1252                  *     frame size in the firmware
1253                  */
1254                 /* XXX stat */
1255                 DPRINTFN(1,
1256                     ("drop rx frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1257                     le16toh(frame->len), frame->chan, frame->rssi,
1258                     frame->rssi_dbm));
1259                 return;
1260         }
1261
1262         DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1263             le16toh(frame->len), frame->chan, frame->rssi, frame->rssi_dbm));
1264
1265         if (frame->chan != sc->curchan)
1266                 iwi_setcurchan(sc, frame->chan);
1267
1268         /*
1269          * Try to allocate a new mbuf for this ring element and load it before
1270          * processing the current mbuf. If the ring element cannot be loaded,
1271          * drop the received packet and reuse the old mbuf. In the unlikely
1272          * case that the old mbuf can't be reloaded either, explicitly panic.
1273          */
1274         mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1275         if (mnew == NULL) {
1276 #if defined(__DragonFly__)
1277                 ++ic->ic_ierrors;
1278 #else
1279                 counter_u64_add(ic->ic_ierrors, 1);
1280 #endif
1281                 return;
1282         }
1283
1284         bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1285
1286         error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1287             mtod(mnew, void *), MCLBYTES, iwi_dma_map_addr, &data->physaddr,
1288             0);
1289         if (error != 0) {
1290                 m_freem(mnew);
1291
1292                 /* try to reload the old mbuf */
1293                 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1294                     mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
1295                     &data->physaddr, 0);
1296                 if (error != 0) {
1297                         /* very unlikely that it will fail... */
1298                         panic("%s: could not load old rx mbuf",
1299                             device_get_name(sc->sc_dev));
1300                 }
1301 #if defined(__DragonFly__)
1302                 ++ic->ic_ierrors;
1303 #else
1304                 counter_u64_add(ic->ic_ierrors, 1);
1305 #endif
1306                 return;
1307         }
1308
1309         /*
1310          * New mbuf successfully loaded, update Rx ring and continue
1311          * processing.
1312          */
1313         m = data->m;
1314         data->m = mnew;
1315         CSR_WRITE_4(sc, data->reg, data->physaddr);
1316
1317         /* finalize mbuf */
1318         m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) +
1319             sizeof (struct iwi_frame) + framelen;
1320
1321         m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame));
1322
1323         rssi = frame->rssi_dbm;
1324         nf = -95;
1325         if (ieee80211_radiotap_active(ic)) {
1326                 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap;
1327
1328                 tap->wr_flags = 0;
1329                 tap->wr_antsignal = rssi;
1330                 tap->wr_antnoise = nf;
1331                 tap->wr_rate = iwi_cvtrate(frame->rate);
1332                 tap->wr_antenna = frame->antenna;
1333         }
1334         IWI_UNLOCK(sc);
1335
1336         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1337         if (ni != NULL) {
1338                 type = ieee80211_input(ni, m, rssi, nf);
1339                 ieee80211_free_node(ni);
1340         } else
1341                 type = ieee80211_input_all(ic, m, rssi, nf);
1342
1343         IWI_LOCK(sc);
1344         if (sc->sc_softled) {
1345                 /*
1346                  * Blink for any data frame.  Otherwise do a
1347                  * heartbeat-style blink when idle.  The latter
1348                  * is mainly for station mode where we depend on
1349                  * periodic beacon frames to trigger the poll event.
1350                  */
1351                 if (type == IEEE80211_FC0_TYPE_DATA) {
1352                         sc->sc_rxrate = frame->rate;
1353                         iwi_led_event(sc, IWI_LED_RX);
1354                 } else if (ticks - sc->sc_ledevent >= sc->sc_ledidle)
1355                         iwi_led_event(sc, IWI_LED_POLL);
1356         }
1357 }
1358
1359 /*
1360  * Check for an association response frame to see if QoS
1361  * has been negotiated.  We parse just enough to figure
1362  * out if we're supposed to use QoS.  The proper solution
1363  * is to pass the frame up so ieee80211_input can do the
1364  * work but that's made hard by how things currently are
1365  * done in the driver.
1366  */
1367 static void
1368 iwi_checkforqos(struct ieee80211vap *vap,
1369         const struct ieee80211_frame *wh, int len)
1370 {
1371 #define SUBTYPE(wh)     ((wh)->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
1372         const uint8_t *frm, *efrm, *wme;
1373         struct ieee80211_node *ni;
1374         uint16_t capinfo, status, associd;
1375
1376         /* NB: +8 for capinfo, status, associd, and first ie */
1377         if (!(sizeof(*wh)+8 < len && len < IEEE80211_MAX_LEN) ||
1378             SUBTYPE(wh) != IEEE80211_FC0_SUBTYPE_ASSOC_RESP)
1379                 return;
1380         /*
1381          * asresp frame format
1382          *      [2] capability information
1383          *      [2] status
1384          *      [2] association ID
1385          *      [tlv] supported rates
1386          *      [tlv] extended supported rates
1387          *      [tlv] WME
1388          */
1389         frm = (const uint8_t *)&wh[1];
1390         efrm = ((const uint8_t *) wh) + len;
1391
1392         capinfo = le16toh(*(const uint16_t *)frm);
1393         frm += 2;
1394         status = le16toh(*(const uint16_t *)frm);
1395         frm += 2;
1396         associd = le16toh(*(const uint16_t *)frm);
1397         frm += 2;
1398
1399         wme = NULL;
1400         while (efrm - frm > 1) {
1401                 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return);
1402                 switch (*frm) {
1403                 case IEEE80211_ELEMID_VENDOR:
1404                         if (iswmeoui(frm))
1405                                 wme = frm;
1406                         break;
1407                 }
1408                 frm += frm[1] + 2;
1409         }
1410
1411         ni = ieee80211_ref_node(vap->iv_bss);
1412         ni->ni_capinfo = capinfo;
1413         ni->ni_associd = associd & 0x3fff;
1414         if (wme != NULL)
1415                 ni->ni_flags |= IEEE80211_NODE_QOS;
1416         else
1417                 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1418         ieee80211_free_node(ni);
1419 #undef SUBTYPE
1420 }
1421
1422 static void
1423 iwi_notif_link_quality(struct iwi_softc *sc, struct iwi_notif *notif)
1424 {
1425         struct iwi_notif_link_quality *lq;
1426         int len;
1427
1428         len = le16toh(notif->len);
1429
1430         DPRINTFN(5, ("Notification (%u) - len=%d, sizeof=%zu\n",
1431             notif->type,
1432             len,
1433             sizeof(struct iwi_notif_link_quality)
1434             ));
1435
1436         /* enforce length */
1437         if (len != sizeof(struct iwi_notif_link_quality)) {
1438                 DPRINTFN(5, ("Notification: (%u) too short (%d)\n",
1439                     notif->type,
1440                     len));
1441                 return;
1442         }
1443
1444         lq = (struct iwi_notif_link_quality *)(notif + 1);
1445         memcpy(&sc->sc_linkqual, lq, sizeof(sc->sc_linkqual));
1446         sc->sc_linkqual_valid = 1;
1447 }
1448
1449 /*
1450  * Task queue callbacks for iwi_notification_intr used to avoid LOR's.
1451  */
1452
1453 static void
1454 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif)
1455 {
1456         struct ieee80211com *ic = &sc->sc_ic;
1457         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1458         struct iwi_notif_scan_channel *chan;
1459         struct iwi_notif_scan_complete *scan;
1460         struct iwi_notif_authentication *auth;
1461         struct iwi_notif_association *assoc;
1462         struct iwi_notif_beacon_state *beacon;
1463
1464         switch (notif->type) {
1465         case IWI_NOTIF_TYPE_SCAN_CHANNEL:
1466                 chan = (struct iwi_notif_scan_channel *)(notif + 1);
1467
1468                 DPRINTFN(3, ("Scan of channel %u complete (%u)\n",
1469                     ieee80211_ieee2mhz(chan->nchan, 0), chan->nchan));
1470
1471                 /* Reset the timer, the scan is still going */
1472                 sc->sc_state_timer = 3;
1473                 break;
1474
1475         case IWI_NOTIF_TYPE_SCAN_COMPLETE:
1476                 scan = (struct iwi_notif_scan_complete *)(notif + 1);
1477
1478                 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan,
1479                     scan->status));
1480
1481                 IWI_STATE_END(sc, IWI_FW_SCANNING);
1482
1483                 /*
1484                  * Monitor mode works by doing a passive scan to set
1485                  * the channel and enable rx.  Because we don't want
1486                  * to abort a scan lest the firmware crash we scan
1487                  * for a short period of time and automatically restart
1488                  * the scan when notified the sweep has completed.
1489                  */
1490                 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
1491                         ieee80211_runtask(ic, &sc->sc_monitortask);
1492                         break;
1493                 }
1494
1495                 if (scan->status == IWI_SCAN_COMPLETED) {
1496                         /* NB: don't need to defer, net80211 does it for us */
1497                         ieee80211_scan_next(vap);
1498                 }
1499                 break;
1500
1501         case IWI_NOTIF_TYPE_AUTHENTICATION:
1502                 auth = (struct iwi_notif_authentication *)(notif + 1);
1503                 switch (auth->state) {
1504                 case IWI_AUTH_SUCCESS:
1505                         DPRINTFN(2, ("Authentication succeeeded\n"));
1506                         ieee80211_new_state(vap, IEEE80211_S_ASSOC, -1);
1507                         break;
1508                 case IWI_AUTH_FAIL:
1509                         /*
1510                          * These are delivered as an unsolicited deauth
1511                          * (e.g. due to inactivity) or in response to an
1512                          * associate request.
1513                          */
1514                         sc->flags &= ~IWI_FLAG_ASSOCIATED;
1515                         if (vap->iv_state != IEEE80211_S_RUN) {
1516                                 DPRINTFN(2, ("Authentication failed\n"));
1517                                 vap->iv_stats.is_rx_auth_fail++;
1518                                 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1519                         } else {
1520                                 DPRINTFN(2, ("Deauthenticated\n"));
1521                                 vap->iv_stats.is_rx_deauth++;
1522                         }
1523                         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1524                         break;
1525                 case IWI_AUTH_SENT_1:
1526                 case IWI_AUTH_RECV_2:
1527                 case IWI_AUTH_SEQ1_PASS:
1528                         break;
1529                 case IWI_AUTH_SEQ1_FAIL:
1530                         DPRINTFN(2, ("Initial authentication handshake failed; "
1531                                 "you probably need shared key\n"));
1532                         vap->iv_stats.is_rx_auth_fail++;
1533                         IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1534                         /* XXX retry shared key when in auto */
1535                         break;
1536                 default:
1537                         device_printf(sc->sc_dev,
1538                             "unknown authentication state %u\n", auth->state);
1539                         break;
1540                 }
1541                 break;
1542
1543         case IWI_NOTIF_TYPE_ASSOCIATION:
1544                 assoc = (struct iwi_notif_association *)(notif + 1);
1545                 switch (assoc->state) {
1546                 case IWI_AUTH_SUCCESS:
1547                         /* re-association, do nothing */
1548                         break;
1549                 case IWI_ASSOC_SUCCESS:
1550                         DPRINTFN(2, ("Association succeeded\n"));
1551                         sc->flags |= IWI_FLAG_ASSOCIATED;
1552                         IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1553                         iwi_checkforqos(vap,
1554                             (const struct ieee80211_frame *)(assoc+1),
1555                             le16toh(notif->len) - sizeof(*assoc) - 1);
1556                         ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
1557                         break;
1558                 case IWI_ASSOC_INIT:
1559                         sc->flags &= ~IWI_FLAG_ASSOCIATED;
1560                         switch (sc->fw_state) {
1561                         case IWI_FW_ASSOCIATING:
1562                                 DPRINTFN(2, ("Association failed\n"));
1563                                 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1564                                 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1565                                 break;
1566
1567                         case IWI_FW_DISASSOCIATING:
1568                                 DPRINTFN(2, ("Dissassociated\n"));
1569                                 IWI_STATE_END(sc, IWI_FW_DISASSOCIATING);
1570                                 vap->iv_stats.is_rx_disassoc++;
1571                                 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1572                                 break;
1573                         }
1574                         break;
1575                 default:
1576                         device_printf(sc->sc_dev,
1577                             "unknown association state %u\n", assoc->state);
1578                         break;
1579                 }
1580                 break;
1581
1582         case IWI_NOTIF_TYPE_BEACON:
1583                 /* XXX check struct length */
1584                 beacon = (struct iwi_notif_beacon_state *)(notif + 1);
1585
1586                 DPRINTFN(5, ("Beacon state (%u, %u)\n",
1587                     beacon->state, le32toh(beacon->number)));
1588
1589                 if (beacon->state == IWI_BEACON_MISS) {
1590                         /*
1591                          * The firmware notifies us of every beacon miss
1592                          * so we need to track the count against the
1593                          * configured threshold before notifying the
1594                          * 802.11 layer.
1595                          * XXX try to roam, drop assoc only on much higher count
1596                          */
1597                         if (le32toh(beacon->number) >= vap->iv_bmissthreshold) {
1598                                 DPRINTF(("Beacon miss: %u >= %u\n",
1599                                     le32toh(beacon->number),
1600                                     vap->iv_bmissthreshold));
1601                                 vap->iv_stats.is_beacon_miss++;
1602                                 /*
1603                                  * It's pointless to notify the 802.11 layer
1604                                  * as it'll try to send a probe request (which
1605                                  * we'll discard) and then timeout and drop us
1606                                  * into scan state.  Instead tell the firmware
1607                                  * to disassociate and then on completion we'll
1608                                  * kick the state machine to scan.
1609                                  */
1610                                 ieee80211_runtask(ic, &sc->sc_disassoctask);
1611                         }
1612                 }
1613                 break;
1614
1615         case IWI_NOTIF_TYPE_CALIBRATION:
1616         case IWI_NOTIF_TYPE_NOISE:
1617                 /* XXX handle? */
1618                 DPRINTFN(5, ("Notification (%u)\n", notif->type));
1619                 break;
1620         case IWI_NOTIF_TYPE_LINK_QUALITY:
1621                 iwi_notif_link_quality(sc, notif);
1622                 break;
1623
1624         default:
1625                 DPRINTF(("unknown notification type %u flags 0x%x len %u\n",
1626                     notif->type, notif->flags, le16toh(notif->len)));
1627                 break;
1628         }
1629 }
1630
1631 static void
1632 iwi_rx_intr(struct iwi_softc *sc)
1633 {
1634         struct iwi_rx_data *data;
1635         struct iwi_hdr *hdr;
1636         uint32_t hw;
1637
1638         hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX);
1639
1640         for (; sc->rxq.cur != hw;) {
1641                 data = &sc->rxq.data[sc->rxq.cur];
1642
1643                 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1644                     BUS_DMASYNC_POSTREAD);
1645
1646                 hdr = mtod(data->m, struct iwi_hdr *);
1647
1648                 switch (hdr->type) {
1649                 case IWI_HDR_TYPE_FRAME:
1650                         iwi_frame_intr(sc, data, sc->rxq.cur,
1651                             (struct iwi_frame *)(hdr + 1));
1652                         break;
1653
1654                 case IWI_HDR_TYPE_NOTIF:
1655                         iwi_notification_intr(sc,
1656                             (struct iwi_notif *)(hdr + 1));
1657                         break;
1658
1659                 default:
1660                         device_printf(sc->sc_dev, "unknown hdr type %u\n",
1661                             hdr->type);
1662                 }
1663
1664                 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1665
1666                 sc->rxq.cur = (sc->rxq.cur + 1) % IWI_RX_RING_COUNT;
1667         }
1668
1669         /* tell the firmware what we have processed */
1670         hw = (hw == 0) ? IWI_RX_RING_COUNT - 1 : hw - 1;
1671         CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw);
1672 }
1673
1674 static void
1675 iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq)
1676 {
1677         struct iwi_tx_data *data;
1678         uint32_t hw;
1679
1680         hw = CSR_READ_4(sc, txq->csr_ridx);
1681
1682         while (txq->next != hw) {
1683                 data = &txq->data[txq->next];
1684                 DPRINTFN(15, ("tx done idx=%u\n", txq->next));
1685                 bus_dmamap_sync(txq->data_dmat, data->map,
1686                     BUS_DMASYNC_POSTWRITE);
1687                 bus_dmamap_unload(txq->data_dmat, data->map);
1688                 ieee80211_tx_complete(data->ni, data->m, 0);
1689                 data->ni = NULL;
1690                 data->m = NULL;
1691                 txq->queued--;
1692                 txq->next = (txq->next + 1) % IWI_TX_RING_COUNT;
1693         }
1694         sc->sc_tx_timer = 0;
1695         if (sc->sc_softled)
1696                 iwi_led_event(sc, IWI_LED_TX);
1697         iwi_start(sc);
1698 }
1699
1700 static void
1701 iwi_fatal_error_intr(struct iwi_softc *sc)
1702 {
1703         struct ieee80211com *ic = &sc->sc_ic;
1704         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1705
1706         device_printf(sc->sc_dev, "firmware error\n");
1707         if (vap != NULL)
1708                 ieee80211_cancel_scan(vap);
1709         ieee80211_runtask(ic, &sc->sc_restarttask);
1710
1711         sc->flags &= ~IWI_FLAG_BUSY;
1712         sc->sc_busy_timer = 0;
1713         wakeup(sc);
1714 }
1715
1716 static void
1717 iwi_radio_off_intr(struct iwi_softc *sc)
1718 {
1719
1720         ieee80211_runtask(&sc->sc_ic, &sc->sc_radiofftask);
1721 }
1722
1723 static void
1724 iwi_intr(void *arg)
1725 {
1726         struct iwi_softc *sc = arg;
1727         uint32_t r;
1728         IWI_LOCK_DECL;
1729
1730         IWI_LOCK(sc);
1731
1732         if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) {
1733                 IWI_UNLOCK(sc);
1734                 return;
1735         }
1736
1737         /* acknowledge interrupts */
1738         CSR_WRITE_4(sc, IWI_CSR_INTR, r);
1739
1740         if (r & IWI_INTR_FATAL_ERROR) {
1741                 iwi_fatal_error_intr(sc);
1742                 goto done;
1743         }
1744
1745         if (r & IWI_INTR_FW_INITED) {
1746                 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR)))
1747                         wakeup(sc);
1748         }
1749
1750         if (r & IWI_INTR_RADIO_OFF)
1751                 iwi_radio_off_intr(sc);
1752
1753         if (r & IWI_INTR_CMD_DONE) {
1754                 sc->flags &= ~IWI_FLAG_BUSY;
1755                 sc->sc_busy_timer = 0;
1756                 wakeup(sc);
1757         }
1758
1759         if (r & IWI_INTR_TX1_DONE)
1760                 iwi_tx_intr(sc, &sc->txq[0]);
1761
1762         if (r & IWI_INTR_TX2_DONE)
1763                 iwi_tx_intr(sc, &sc->txq[1]);
1764
1765         if (r & IWI_INTR_TX3_DONE)
1766                 iwi_tx_intr(sc, &sc->txq[2]);
1767
1768         if (r & IWI_INTR_TX4_DONE)
1769                 iwi_tx_intr(sc, &sc->txq[3]);
1770
1771         if (r & IWI_INTR_RX_DONE)
1772                 iwi_rx_intr(sc);
1773
1774         if (r & IWI_INTR_PARITY_ERROR) {
1775                 /* XXX rate-limit */
1776                 device_printf(sc->sc_dev, "parity error\n");
1777         }
1778 done:
1779         IWI_UNLOCK(sc);
1780 }
1781
1782 static int
1783 iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len)
1784 {
1785         struct iwi_cmd_desc *desc;
1786
1787         IWI_LOCK_ASSERT(sc);
1788
1789         if (sc->flags & IWI_FLAG_BUSY) {
1790                 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n",
1791                         __func__, type);
1792                 return EAGAIN;
1793         }
1794         sc->flags |= IWI_FLAG_BUSY;
1795         sc->sc_busy_timer = 2;
1796
1797         desc = &sc->cmdq.desc[sc->cmdq.cur];
1798
1799         desc->hdr.type = IWI_HDR_TYPE_COMMAND;
1800         desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1801         desc->type = type;
1802         desc->len = len;
1803         memcpy(desc->data, data, len);
1804
1805         bus_dmamap_sync(sc->cmdq.desc_dmat, sc->cmdq.desc_map,
1806             BUS_DMASYNC_PREWRITE);
1807
1808         DPRINTFN(2, ("sending command idx=%u type=%u len=%u\n", sc->cmdq.cur,
1809             type, len));
1810
1811         sc->cmdq.cur = (sc->cmdq.cur + 1) % IWI_CMD_RING_COUNT;
1812         CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
1813
1814 #if defined(__DragonFly__)
1815         return lksleep(sc, &sc->sc_lock, 0, "iwicmd", hz);
1816 #else
1817         return msleep(sc, &sc->sc_mtx, 0, "iwicmd", hz);
1818 #endif
1819 }
1820
1821 static void
1822 iwi_write_ibssnode(struct iwi_softc *sc,
1823         const u_int8_t addr[IEEE80211_ADDR_LEN], int entry)
1824 {
1825         struct iwi_ibssnode node;
1826
1827         /* write node information into NIC memory */
1828         memset(&node, 0, sizeof node);
1829         IEEE80211_ADDR_COPY(node.bssid, addr);
1830 #if defined(__DragonFly__)
1831         DPRINTF(("%s mac %s station %u\n", __func__, ether_sprintf(node.bssid),
1832             entry));
1833 #else
1834         DPRINTF(("%s mac %6D station %u\n", __func__, node.bssid, ":", entry));
1835 #endif
1836
1837         CSR_WRITE_REGION_1(sc,
1838             IWI_CSR_NODE_BASE + entry * sizeof node,
1839             (uint8_t *)&node, sizeof node);
1840 }
1841
1842 static int
1843 iwi_tx_start(struct iwi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1844     int ac)
1845 {
1846         struct ieee80211vap *vap = ni->ni_vap;
1847         struct ieee80211com *ic = ni->ni_ic;
1848         struct iwi_node *in = (struct iwi_node *)ni;
1849         const struct ieee80211_frame *wh;
1850         struct ieee80211_key *k;
1851         const struct chanAccParams *cap;
1852         struct iwi_tx_ring *txq = &sc->txq[ac];
1853         struct iwi_tx_data *data;
1854         struct iwi_tx_desc *desc;
1855         struct mbuf *mnew;
1856         bus_dma_segment_t segs[IWI_MAX_NSEG];
1857         int error, nsegs, hdrlen, i;
1858         int ismcast, flags, xflags, staid;
1859
1860         IWI_LOCK_ASSERT(sc);
1861         wh = mtod(m0, const struct ieee80211_frame *);
1862         /* NB: only data frames use this path */
1863         hdrlen = ieee80211_hdrsize(wh);
1864         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
1865         flags = xflags = 0;
1866
1867         if (!ismcast)
1868                 flags |= IWI_DATA_FLAG_NEED_ACK;
1869         if (vap->iv_flags & IEEE80211_F_SHPREAMBLE)
1870                 flags |= IWI_DATA_FLAG_SHPREAMBLE;
1871         if (IEEE80211_QOS_HAS_SEQ(wh)) {
1872                 xflags |= IWI_DATA_XFLAG_QOS;
1873                 cap = &ic->ic_wme.wme_chanParams;
1874                 if (!cap->cap_wmeParams[ac].wmep_noackPolicy)
1875                         flags &= ~IWI_DATA_FLAG_NEED_ACK;
1876         }
1877
1878         /*
1879          * This is only used in IBSS mode where the firmware expect an index
1880          * in a h/w table instead of a destination address.
1881          */
1882         if (vap->iv_opmode == IEEE80211_M_IBSS) {
1883                 if (!ismcast) {
1884                         if (in->in_station == -1) {
1885 #if defined(__DragonFly__)
1886                                 in->in_station = devfs_clone_bitmap_get(&sc->sc_unr,
1887                                         IWI_MAX_IBSSNODE-1);
1888 #else
1889                                 in->in_station = alloc_unr(sc->sc_unr);
1890 #endif
1891                                 if (in->in_station == -1) {
1892                                         /* h/w table is full */
1893                                         if_inc_counter(ni->ni_vap->iv_ifp,
1894                                             IFCOUNTER_OERRORS, 1);
1895                                         m_freem(m0);
1896                                         ieee80211_free_node(ni);
1897                                         return 0;
1898                                 }
1899                                 iwi_write_ibssnode(sc,
1900                                         ni->ni_macaddr, in->in_station);
1901                         }
1902                         staid = in->in_station;
1903                 } else {
1904                         /*
1905                          * Multicast addresses have no associated node
1906                          * so there will be no station entry.  We reserve
1907                          * entry 0 for one mcast address and use that.
1908                          * If there are many being used this will be
1909                          * expensive and we'll need to do a better job
1910                          * but for now this handles the broadcast case.
1911                          */
1912                         if (!IEEE80211_ADDR_EQ(wh->i_addr1, sc->sc_mcast)) {
1913                                 IEEE80211_ADDR_COPY(sc->sc_mcast, wh->i_addr1);
1914                                 iwi_write_ibssnode(sc, sc->sc_mcast, 0);
1915                         }
1916                         staid = 0;
1917                 }
1918         } else
1919                 staid = 0;
1920
1921         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1922                 k = ieee80211_crypto_encap(ni, m0);
1923                 if (k == NULL) {
1924                         m_freem(m0);
1925                         return ENOBUFS;
1926                 }
1927
1928                 /* packet header may have moved, reset our local pointer */
1929                 wh = mtod(m0, struct ieee80211_frame *);
1930         }
1931
1932         if (ieee80211_radiotap_active_vap(vap)) {
1933                 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap;
1934
1935                 tap->wt_flags = 0;
1936
1937                 ieee80211_radiotap_tx(vap, m0);
1938         }
1939
1940         data = &txq->data[txq->cur];
1941         desc = &txq->desc[txq->cur];
1942
1943         /* save and trim IEEE802.11 header */
1944         m_copydata(m0, 0, hdrlen, &desc->wh);
1945         m_adj(m0, hdrlen);
1946
1947 #if defined(__DragonFly__)
1948         error = bus_dmamap_load_mbuf_segment(txq->data_dmat, data->map,
1949             m0, segs, 1, &nsegs, BUS_DMA_NOWAIT);
1950 #else
1951         error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, m0, segs,
1952             &nsegs, 0);
1953 #endif
1954         if (error != 0 && error != EFBIG) {
1955                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1956                     error);
1957                 m_freem(m0);
1958                 return error;
1959         }
1960         if (error != 0) {
1961                 mnew = m_defrag(m0, M_NOWAIT);
1962                 if (mnew == NULL) {
1963                         device_printf(sc->sc_dev,
1964                             "could not defragment mbuf\n");
1965                         m_freem(m0);
1966                         return ENOBUFS;
1967                 }
1968                 m0 = mnew;
1969
1970 #if defined(__DragonFly__)
1971                 error = bus_dmamap_load_mbuf_segment(txq->data_dmat,
1972                     data->map, m0, segs, 1, &nsegs, BUS_DMA_NOWAIT);
1973 #else
1974                 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map,
1975                     m0, segs, &nsegs, 0);
1976 #endif
1977                 if (error != 0) {
1978                         device_printf(sc->sc_dev,
1979                             "could not map mbuf (error %d)\n", error);
1980                         m_freem(m0);
1981                         return error;
1982                 }
1983         }
1984
1985         data->m = m0;
1986         data->ni = ni;
1987
1988         desc->hdr.type = IWI_HDR_TYPE_DATA;
1989         desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1990         desc->station = staid;
1991         desc->cmd = IWI_DATA_CMD_TX;
1992         desc->len = htole16(m0->m_pkthdr.len);
1993         desc->flags = flags;
1994         desc->xflags = xflags;
1995
1996 #if 0
1997         if (vap->iv_flags & IEEE80211_F_PRIVACY)
1998                 desc->wep_txkey = vap->iv_def_txkey;
1999         else
2000 #endif
2001                 desc->flags |= IWI_DATA_FLAG_NO_WEP;
2002
2003         desc->nseg = htole32(nsegs);
2004         for (i = 0; i < nsegs; i++) {
2005                 desc->seg_addr[i] = htole32(segs[i].ds_addr);
2006                 desc->seg_len[i]  = htole16(segs[i].ds_len);
2007         }
2008
2009         bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
2010         bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE);
2011
2012         DPRINTFN(5, ("sending data frame txq=%u idx=%u len=%u nseg=%u\n",
2013             ac, txq->cur, le16toh(desc->len), nsegs));
2014
2015         txq->queued++;
2016         txq->cur = (txq->cur + 1) % IWI_TX_RING_COUNT;
2017         CSR_WRITE_4(sc, txq->csr_widx, txq->cur);
2018
2019         return 0;
2020 }
2021
2022 static int
2023 iwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2024         const struct ieee80211_bpf_params *params)
2025 {
2026         /* no support; just discard */
2027         m_freem(m);
2028         ieee80211_free_node(ni);
2029         return 0;
2030 }
2031
2032 static int
2033 iwi_transmit(struct ieee80211com *ic, struct mbuf *m)
2034 {
2035         struct iwi_softc *sc = ic->ic_softc;
2036         int error;
2037         IWI_LOCK_DECL;
2038
2039         IWI_LOCK(sc);
2040         if (!sc->sc_running) {
2041                 IWI_UNLOCK(sc);
2042                 return (ENXIO);
2043         }
2044         error = mbufq_enqueue(&sc->sc_snd, m);
2045         if (error) {
2046                 IWI_UNLOCK(sc);
2047                 return (error);
2048         }
2049         iwi_start(sc);
2050         IWI_UNLOCK(sc);
2051         return (0);
2052 }
2053
2054 static void
2055 iwi_start(struct iwi_softc *sc)
2056 {
2057         struct mbuf *m;
2058         struct ieee80211_node *ni;
2059         int ac;
2060
2061         IWI_LOCK_ASSERT(sc);
2062
2063         while ((m =  mbufq_dequeue(&sc->sc_snd)) != NULL) {
2064                 ac = M_WME_GETAC(m);
2065                 if (sc->txq[ac].queued > IWI_TX_RING_COUNT - 8) {
2066                         /* there is no place left in this ring; tail drop */
2067                         /* XXX tail drop */
2068                         mbufq_prepend(&sc->sc_snd, m);
2069                         break;
2070                 }
2071                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
2072                 if (iwi_tx_start(sc, m, ni, ac) != 0) {
2073                         ieee80211_free_node(ni);
2074                         if_inc_counter(ni->ni_vap->iv_ifp,
2075                             IFCOUNTER_OERRORS, 1);
2076                         break;
2077                 }
2078                 sc->sc_tx_timer = 5;
2079         }
2080 }
2081
2082 static void
2083 iwi_watchdog(void *arg)
2084 {
2085         struct iwi_softc *sc = arg;
2086         struct ieee80211com *ic = &sc->sc_ic;
2087
2088         IWI_LOCK_ASSERT(sc);
2089
2090         if (sc->sc_tx_timer > 0) {
2091                 if (--sc->sc_tx_timer == 0) {
2092                         device_printf(sc->sc_dev, "device timeout\n");
2093 #if defined(__DragonFly__)
2094                         ++ic->ic_oerrors;
2095 #else
2096                         counter_u64_add(ic->ic_oerrors, 1);
2097 #endif
2098                         ieee80211_runtask(ic, &sc->sc_restarttask);
2099                 }
2100         }
2101         if (sc->sc_state_timer > 0) {
2102                 if (--sc->sc_state_timer == 0) {
2103                         device_printf(sc->sc_dev,
2104                             "firmware stuck in state %d, resetting\n",
2105                             sc->fw_state);
2106                         if (sc->fw_state == IWI_FW_SCANNING)
2107                                 ieee80211_cancel_scan(TAILQ_FIRST(&ic->ic_vaps));
2108                         ieee80211_runtask(ic, &sc->sc_restarttask);
2109                         sc->sc_state_timer = 3;
2110                 }
2111         }
2112         if (sc->sc_busy_timer > 0) {
2113                 if (--sc->sc_busy_timer == 0) {
2114                         device_printf(sc->sc_dev,
2115                             "firmware command timeout, resetting\n");
2116                         ieee80211_runtask(ic, &sc->sc_restarttask);
2117                 }
2118         }
2119         callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
2120 }
2121
2122 static void
2123 iwi_parent(struct ieee80211com *ic)
2124 {
2125         struct iwi_softc *sc = ic->ic_softc;
2126         int startall = 0;
2127         IWI_LOCK_DECL;
2128
2129         IWI_LOCK(sc);
2130         if (ic->ic_nrunning > 0) {
2131                 if (!sc->sc_running) {
2132                         iwi_init_locked(sc);
2133                         startall = 1;
2134                 }
2135         } else if (sc->sc_running)
2136                 iwi_stop_locked(sc);
2137         IWI_UNLOCK(sc);
2138         if (startall)
2139                 ieee80211_start_all(ic);
2140 }
2141
2142 static void
2143 iwi_stop_master(struct iwi_softc *sc)
2144 {
2145         uint32_t tmp;
2146         int ntries;
2147
2148         /* disable interrupts */
2149         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0);
2150
2151         CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER);
2152         for (ntries = 0; ntries < 5; ntries++) {
2153                 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2154                         break;
2155                 DELAY(10);
2156         }
2157         if (ntries == 5)
2158                 device_printf(sc->sc_dev, "timeout waiting for master\n");
2159
2160         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2161         CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_PRINCETON_RESET);
2162
2163         sc->flags &= ~IWI_FLAG_FW_INITED;
2164 }
2165
2166 static int
2167 iwi_reset(struct iwi_softc *sc)
2168 {
2169         uint32_t tmp;
2170         int i, ntries;
2171
2172         iwi_stop_master(sc);
2173
2174         tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2175         CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2176
2177         CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST);
2178
2179         /* wait for clock stabilization */
2180         for (ntries = 0; ntries < 1000; ntries++) {
2181                 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY)
2182                         break;
2183                 DELAY(200);
2184         }
2185         if (ntries == 1000) {
2186                 device_printf(sc->sc_dev,
2187                     "timeout waiting for clock stabilization\n");
2188                 return EIO;
2189         }
2190
2191         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2192         CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_SOFT_RESET);
2193
2194         DELAY(10);
2195
2196         tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2197         CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2198
2199         /* clear NIC memory */
2200         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0);
2201         for (i = 0; i < 0xc000; i++)
2202                 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2203
2204         return 0;
2205 }
2206
2207 static const struct iwi_firmware_ohdr *
2208 iwi_setup_ofw(struct iwi_softc *sc, struct iwi_fw *fw)
2209 {
2210         const struct firmware *fp = fw->fp;
2211         const struct iwi_firmware_ohdr *hdr;
2212
2213         if (fp->datasize < sizeof (struct iwi_firmware_ohdr)) {
2214                 device_printf(sc->sc_dev, "image '%s' too small\n", fp->name);
2215                 return NULL;
2216         }
2217         hdr = (const struct iwi_firmware_ohdr *)fp->data;
2218         if ((IWI_FW_GET_MAJOR(le32toh(hdr->version)) != IWI_FW_REQ_MAJOR) ||
2219             (IWI_FW_GET_MINOR(le32toh(hdr->version)) != IWI_FW_REQ_MINOR)) {
2220                 device_printf(sc->sc_dev, "version for '%s' %d.%d != %d.%d\n",
2221                     fp->name, IWI_FW_GET_MAJOR(le32toh(hdr->version)),
2222                     IWI_FW_GET_MINOR(le32toh(hdr->version)), IWI_FW_REQ_MAJOR,
2223                     IWI_FW_REQ_MINOR);
2224                 return NULL;
2225         }
2226         fw->data = ((const char *) fp->data) + sizeof(struct iwi_firmware_ohdr);
2227         fw->size = fp->datasize - sizeof(struct iwi_firmware_ohdr);
2228         fw->name = fp->name;
2229         return hdr;
2230 }
2231
2232 static const struct iwi_firmware_ohdr *
2233 iwi_setup_oucode(struct iwi_softc *sc, struct iwi_fw *fw)
2234 {
2235         const struct iwi_firmware_ohdr *hdr;
2236
2237         hdr = iwi_setup_ofw(sc, fw);
2238         if (hdr != NULL && le32toh(hdr->mode) != IWI_FW_MODE_UCODE) {
2239                 device_printf(sc->sc_dev, "%s is not a ucode image\n",
2240                     fw->name);
2241                 hdr = NULL;
2242         }
2243         return hdr;
2244 }
2245
2246 static void
2247 iwi_getfw(struct iwi_fw *fw, const char *fwname,
2248           struct iwi_fw *uc, const char *ucname)
2249 {
2250         if (fw->fp == NULL)
2251                 fw->fp = firmware_get(fwname);
2252         /* NB: pre-3.0 ucode is packaged separately */
2253         if (uc->fp == NULL && fw->fp != NULL && fw->fp->version < 300)
2254                 uc->fp = firmware_get(ucname);
2255 }
2256
2257 /*
2258  * Get the required firmware images if not already loaded.
2259  * Note that we hold firmware images so long as the device
2260  * is marked up in case we need to reload them on device init.
2261  * This is necessary because we re-init the device sometimes
2262  * from a context where we cannot read from the filesystem
2263  * (e.g. from the taskqueue thread when rfkill is re-enabled).
2264  * XXX return 0 on success, 1 on error.
2265  *
2266  * NB: the order of get'ing and put'ing images here is
2267  * intentional to support handling firmware images bundled
2268  * by operating mode and/or all together in one file with
2269  * the boot firmware as "master".
2270  */
2271 static int
2272 iwi_get_firmware(struct iwi_softc *sc, enum ieee80211_opmode opmode)
2273 {
2274         const struct iwi_firmware_hdr *hdr;
2275         const struct firmware *fp;
2276
2277         /* invalidate cached firmware on mode change */
2278         if (sc->fw_mode != opmode)
2279                 iwi_put_firmware(sc);
2280
2281         switch (opmode) {
2282         case IEEE80211_M_STA:
2283                 iwi_getfw(&sc->fw_fw, "iwi_bss", &sc->fw_uc, "iwi_ucode_bss");
2284                 break;
2285         case IEEE80211_M_IBSS:
2286                 iwi_getfw(&sc->fw_fw, "iwi_ibss", &sc->fw_uc, "iwi_ucode_ibss");
2287                 break;
2288         case IEEE80211_M_MONITOR:
2289                 iwi_getfw(&sc->fw_fw, "iwi_monitor",
2290                           &sc->fw_uc, "iwi_ucode_monitor");
2291                 break;
2292         default:
2293                 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode);
2294                 return EINVAL;
2295         }
2296         fp = sc->fw_fw.fp;
2297         if (fp == NULL) {
2298                 device_printf(sc->sc_dev, "could not load firmware\n");
2299                 goto bad;
2300         }
2301         if (fp->version < 300) {
2302                 /*
2303                  * Firmware prior to 3.0 was packaged as separate
2304                  * boot, firmware, and ucode images.  Verify the
2305                  * ucode image was read in, retrieve the boot image
2306                  * if needed, and check version stamps for consistency.
2307                  * The version stamps in the data are also checked
2308                  * above; this is a bit paranoid but is a cheap
2309                  * safeguard against mis-packaging.
2310                  */
2311                 if (sc->fw_uc.fp == NULL) {
2312                         device_printf(sc->sc_dev, "could not load ucode\n");
2313                         goto bad;
2314                 }
2315                 if (sc->fw_boot.fp == NULL) {
2316                         sc->fw_boot.fp = firmware_get("iwi_boot");
2317                         if (sc->fw_boot.fp == NULL) {
2318                                 device_printf(sc->sc_dev,
2319                                         "could not load boot firmware\n");
2320                                 goto bad;
2321                         }
2322                 }
2323                 if (sc->fw_boot.fp->version != sc->fw_fw.fp->version ||
2324                     sc->fw_boot.fp->version != sc->fw_uc.fp->version) {
2325                         device_printf(sc->sc_dev,
2326                             "firmware version mismatch: "
2327                             "'%s' is %d, '%s' is %d, '%s' is %d\n",
2328                             sc->fw_boot.fp->name, sc->fw_boot.fp->version,
2329                             sc->fw_uc.fp->name, sc->fw_uc.fp->version,
2330                             sc->fw_fw.fp->name, sc->fw_fw.fp->version
2331                         );
2332                         goto bad;
2333                 }
2334                 /*
2335                  * Check and setup each image.
2336                  */
2337                 if (iwi_setup_oucode(sc, &sc->fw_uc) == NULL ||
2338                     iwi_setup_ofw(sc, &sc->fw_boot) == NULL ||
2339                     iwi_setup_ofw(sc, &sc->fw_fw) == NULL)
2340                         goto bad;
2341         } else {
2342                 /*
2343                  * Check and setup combined image.
2344                  */
2345                 if (fp->datasize < sizeof(struct iwi_firmware_hdr)) {
2346                         device_printf(sc->sc_dev, "image '%s' too small\n",
2347                             fp->name);
2348                         goto bad;
2349                 }
2350                 hdr = (const struct iwi_firmware_hdr *)fp->data;
2351                 if (fp->datasize < sizeof(*hdr) + le32toh(hdr->bsize) + le32toh(hdr->usize)
2352                                 + le32toh(hdr->fsize)) {
2353                         device_printf(sc->sc_dev, "image '%s' too small (2)\n",
2354                             fp->name);
2355                         goto bad;
2356                 }
2357                 sc->fw_boot.data = ((const char *) fp->data) + sizeof(*hdr);
2358                 sc->fw_boot.size = le32toh(hdr->bsize);
2359                 sc->fw_boot.name = fp->name;
2360                 sc->fw_uc.data = sc->fw_boot.data + sc->fw_boot.size;
2361                 sc->fw_uc.size = le32toh(hdr->usize);
2362                 sc->fw_uc.name = fp->name;
2363                 sc->fw_fw.data = sc->fw_uc.data + sc->fw_uc.size;
2364                 sc->fw_fw.size = le32toh(hdr->fsize);
2365                 sc->fw_fw.name = fp->name;
2366         }
2367 #if 0
2368         device_printf(sc->sc_dev, "boot %d ucode %d fw %d bytes\n",
2369                 sc->fw_boot.size, sc->fw_uc.size, sc->fw_fw.size);
2370 #endif
2371
2372         sc->fw_mode = opmode;
2373         return 0;
2374 bad:
2375         iwi_put_firmware(sc);
2376         return 1;
2377 }
2378
2379 static void
2380 iwi_put_fw(struct iwi_fw *fw)
2381 {
2382         if (fw->fp != NULL) {
2383                 firmware_put(fw->fp, FIRMWARE_UNLOAD);
2384                 fw->fp = NULL;
2385         }
2386         fw->data = NULL;
2387         fw->size = 0;
2388         fw->name = NULL;
2389 }
2390
2391 /*
2392  * Release any cached firmware images.
2393  */
2394 static void
2395 iwi_put_firmware(struct iwi_softc *sc)
2396 {
2397         iwi_put_fw(&sc->fw_uc);
2398         iwi_put_fw(&sc->fw_fw);
2399         iwi_put_fw(&sc->fw_boot);
2400 }
2401
2402 static int
2403 iwi_load_ucode(struct iwi_softc *sc, const struct iwi_fw *fw)
2404 {
2405         uint32_t tmp;
2406         const uint16_t *w;
2407         const char *uc = fw->data;
2408         size_t size = fw->size;
2409         int i, ntries, error;
2410
2411         IWI_LOCK_ASSERT(sc);
2412         error = 0;
2413         CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) |
2414             IWI_RST_STOP_MASTER);
2415         for (ntries = 0; ntries < 5; ntries++) {
2416                 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2417                         break;
2418                 DELAY(10);
2419         }
2420         if (ntries == 5) {
2421                 device_printf(sc->sc_dev, "timeout waiting for master\n");
2422                 error = EIO;
2423                 goto fail;
2424         }
2425
2426         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
2427         DELAY(5000);
2428
2429         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2430         tmp &= ~IWI_RST_PRINCETON_RESET;
2431         CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2432
2433         DELAY(5000);
2434         MEM_WRITE_4(sc, 0x3000e0, 0);
2435         DELAY(1000);
2436         MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 1);
2437         DELAY(1000);
2438         MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 0);
2439         DELAY(1000);
2440         MEM_WRITE_1(sc, 0x200000, 0x00);
2441         MEM_WRITE_1(sc, 0x200000, 0x40);
2442         DELAY(1000);
2443
2444         /* write microcode into adapter memory */
2445         for (w = (const uint16_t *)uc; size > 0; w++, size -= 2)
2446                 MEM_WRITE_2(sc, 0x200010, htole16(*w));
2447
2448         MEM_WRITE_1(sc, 0x200000, 0x00);
2449         MEM_WRITE_1(sc, 0x200000, 0x80);
2450
2451         /* wait until we get an answer */
2452         for (ntries = 0; ntries < 100; ntries++) {
2453                 if (MEM_READ_1(sc, 0x200000) & 1)
2454                         break;
2455                 DELAY(100);
2456         }
2457         if (ntries == 100) {
2458                 device_printf(sc->sc_dev,
2459                     "timeout waiting for ucode to initialize\n");
2460                 error = EIO;
2461                 goto fail;
2462         }
2463
2464         /* read the answer or the firmware will not initialize properly */
2465         for (i = 0; i < 7; i++)
2466                 MEM_READ_4(sc, 0x200004);
2467
2468         MEM_WRITE_1(sc, 0x200000, 0x00);
2469
2470 fail:
2471         return error;
2472 }
2473
2474 /* macro to handle unaligned little endian data in firmware image */
2475 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2476
2477 static int
2478 iwi_load_firmware(struct iwi_softc *sc, const struct iwi_fw *fw)
2479 {
2480         u_char *p, *end;
2481         uint32_t sentinel, ctl, src, dst, sum, len, mlen, tmp;
2482         int ntries, error;
2483
2484         IWI_LOCK_ASSERT(sc);
2485
2486         /* copy firmware image to DMA memory */
2487         memcpy(sc->fw_virtaddr, fw->data, fw->size);
2488
2489         /* make sure the adapter will get up-to-date values */
2490         bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_PREWRITE);
2491
2492         /* tell the adapter where the command blocks are stored */
2493         MEM_WRITE_4(sc, 0x3000a0, 0x27000);
2494
2495         /*
2496          * Store command blocks into adapter's internal memory using register
2497          * indirections. The adapter will read the firmware image through DMA
2498          * using information stored in command blocks.
2499          */
2500         src = sc->fw_physaddr;
2501         p = sc->fw_virtaddr;
2502         end = p + fw->size;
2503         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000);
2504
2505         while (p < end) {
2506                 dst = GETLE32(p); p += 4; src += 4;
2507                 len = GETLE32(p); p += 4; src += 4;
2508                 p += len;
2509
2510                 while (len > 0) {
2511                         mlen = min(len, IWI_CB_MAXDATALEN);
2512
2513                         ctl = IWI_CB_DEFAULT_CTL | mlen;
2514                         sum = ctl ^ src ^ dst;
2515
2516                         /* write a command block */
2517                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl);
2518                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src);
2519                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst);
2520                         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum);
2521
2522                         src += mlen;
2523                         dst += mlen;
2524                         len -= mlen;
2525                 }
2526         }
2527
2528         /* write a fictive final command block (sentinel) */
2529         sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR);
2530         CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2531
2532         tmp = CSR_READ_4(sc, IWI_CSR_RST);
2533         tmp &= ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER);
2534         CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2535
2536         /* tell the adapter to start processing command blocks */
2537         MEM_WRITE_4(sc, 0x3000a4, 0x540100);
2538
2539         /* wait until the adapter reaches the sentinel */
2540         for (ntries = 0; ntries < 400; ntries++) {
2541                 if (MEM_READ_4(sc, 0x3000d0) >= sentinel)
2542                         break;
2543                 DELAY(100);
2544         }
2545         /* sync dma, just in case */
2546         bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_POSTWRITE);
2547         if (ntries == 400) {
2548                 device_printf(sc->sc_dev,
2549                     "timeout processing command blocks for %s firmware\n",
2550                     fw->name);
2551                 return EIO;
2552         }
2553
2554         /* we're done with command blocks processing */
2555         MEM_WRITE_4(sc, 0x3000a4, 0x540c00);
2556
2557         /* allow interrupts so we know when the firmware is ready */
2558         CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK);
2559
2560         /* tell the adapter to initialize the firmware */
2561         CSR_WRITE_4(sc, IWI_CSR_RST, 0);
2562
2563         tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2564         CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_ALLOW_STANDBY);
2565
2566         /* wait at most one second for firmware initialization to complete */
2567 #if defined(__DragonFly__)
2568         if ((error = lksleep(sc, &sc->sc_lock, 0, "iwiinit", hz)) != 0) {
2569 #else
2570         if ((error = msleep(sc, &sc->sc_mtx, 0, "iwiinit", hz)) != 0) {
2571 #endif
2572                 device_printf(sc->sc_dev, "timeout waiting for %s firmware "
2573                     "initialization to complete\n", fw->name);
2574         }
2575
2576         return error;
2577 }
2578
2579 static int
2580 iwi_setpowermode(struct iwi_softc *sc, struct ieee80211vap *vap)
2581 {
2582         uint32_t data;
2583
2584         if (vap->iv_flags & IEEE80211_F_PMGTON) {
2585                 /* XXX set more fine-grained operation */
2586                 data = htole32(IWI_POWER_MODE_MAX);
2587         } else
2588                 data = htole32(IWI_POWER_MODE_CAM);
2589
2590         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2591         return iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data);
2592 }
2593
2594 static int
2595 iwi_setwepkeys(struct iwi_softc *sc, struct ieee80211vap *vap)
2596 {
2597         struct iwi_wep_key wepkey;
2598         struct ieee80211_key *wk;
2599         int error, i;
2600
2601         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2602                 wk = &vap->iv_nw_keys[i];
2603
2604                 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY;
2605                 wepkey.idx = i;
2606                 wepkey.len = wk->wk_keylen;
2607                 memset(wepkey.key, 0, sizeof wepkey.key);
2608                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2609                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2610                     wepkey.len));
2611                 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey,
2612                     sizeof wepkey);
2613                 if (error != 0)
2614                         return error;
2615         }
2616         return 0;
2617 }
2618
2619 static int
2620 iwi_config(struct iwi_softc *sc)
2621 {
2622         struct ieee80211com *ic = &sc->sc_ic;
2623         struct iwi_configuration config;
2624         struct iwi_rateset rs;
2625         struct iwi_txpower power;
2626         uint32_t data;
2627         int error, i;
2628
2629         IWI_LOCK_ASSERT(sc);
2630
2631 #if defined(__DragonFly__)
2632         DPRINTF(("Setting MAC address to %s\n", ether_sprintf(ic->ic_macaddr)));
2633 #else
2634         DPRINTF(("Setting MAC address to %6D\n", ic->ic_macaddr, ":"));
2635 #endif
2636         error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, ic->ic_macaddr,
2637             IEEE80211_ADDR_LEN);
2638         if (error != 0)
2639                 return error;
2640
2641         memset(&config, 0, sizeof config);
2642         config.bluetooth_coexistence = sc->bluetooth;
2643         config.silence_threshold = 0x1e;
2644         config.antenna = sc->antenna;
2645         config.multicast_enabled = 1;
2646         config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2647         config.disable_unicast_decryption = 1;
2648         config.disable_multicast_decryption = 1;
2649         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2650                 config.allow_invalid_frames = 1;
2651                 config.allow_beacon_and_probe_resp = 1;
2652                 config.allow_mgt = 1;
2653         }
2654         DPRINTF(("Configuring adapter\n"));
2655         error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2656         if (error != 0)
2657                 return error;
2658         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2659                 power.mode = IWI_MODE_11B;
2660                 power.nchan = 11;
2661                 for (i = 0; i < 11; i++) {
2662                         power.chan[i].chan = i + 1;
2663                         power.chan[i].power = IWI_TXPOWER_MAX;
2664                 }
2665                 DPRINTF(("Setting .11b channels tx power\n"));
2666                 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2667                 if (error != 0)
2668                         return error;
2669
2670                 power.mode = IWI_MODE_11G;
2671                 DPRINTF(("Setting .11g channels tx power\n"));
2672                 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2673                 if (error != 0)
2674                         return error;
2675         }
2676
2677         memset(&rs, 0, sizeof rs);
2678         rs.mode = IWI_MODE_11G;
2679         rs.type = IWI_RATESET_TYPE_SUPPORTED;
2680         rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates;
2681         memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates,
2682             rs.nrates);
2683         DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates));
2684         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2685         if (error != 0)
2686                 return error;
2687
2688         memset(&rs, 0, sizeof rs);
2689         rs.mode = IWI_MODE_11A;
2690         rs.type = IWI_RATESET_TYPE_SUPPORTED;
2691         rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates;
2692         memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates,
2693             rs.nrates);
2694         DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates));
2695         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2696         if (error != 0)
2697                 return error;
2698
2699         data = htole32(karc4random());
2700         DPRINTF(("Setting initialization vector to %u\n", le32toh(data)));
2701         error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data);
2702         if (error != 0)
2703                 return error;
2704
2705         /* enable adapter */
2706         DPRINTF(("Enabling adapter\n"));
2707         return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0);
2708 }
2709
2710 static __inline void
2711 set_scan_type(struct iwi_scan_ext *scan, int ix, int scan_type)
2712 {
2713         uint8_t *st = &scan->scan_type[ix / 2];
2714         if (ix % 2)
2715                 *st = (*st & 0xf0) | ((scan_type & 0xf) << 0);
2716         else
2717                 *st = (*st & 0x0f) | ((scan_type & 0xf) << 4);
2718 }
2719
2720 static int
2721 scan_type(const struct ieee80211_scan_state *ss,
2722         const struct ieee80211_channel *chan)
2723 {
2724         /* We can only set one essid for a directed scan */
2725         if (ss->ss_nssid != 0)
2726                 return IWI_SCAN_TYPE_BDIRECTED;
2727         if ((ss->ss_flags & IEEE80211_SCAN_ACTIVE) &&
2728             (chan->ic_flags & IEEE80211_CHAN_PASSIVE) == 0)
2729                 return IWI_SCAN_TYPE_BROADCAST;
2730         return IWI_SCAN_TYPE_PASSIVE;
2731 }
2732
2733 static __inline int
2734 scan_band(const struct ieee80211_channel *c)
2735 {
2736         return IEEE80211_IS_CHAN_5GHZ(c) ?  IWI_CHAN_5GHZ : IWI_CHAN_2GHZ;
2737 }
2738
2739 static void
2740 iwi_monitor_scan(void *arg, int npending)
2741 {
2742         struct iwi_softc *sc = arg;
2743         IWI_LOCK_DECL;
2744
2745         IWI_LOCK(sc);
2746         (void) iwi_scanchan(sc, 2000, 0);
2747         IWI_UNLOCK(sc);
2748 }
2749
2750 /*
2751  * Start a scan on the current channel or all channels.
2752  */
2753 static int
2754 iwi_scanchan(struct iwi_softc *sc, unsigned long maxdwell, int allchan)
2755 {
2756         struct ieee80211com *ic = &sc->sc_ic;
2757         struct ieee80211_channel *chan;
2758         struct ieee80211_scan_state *ss;
2759         struct iwi_scan_ext scan;
2760         int error = 0;
2761
2762         IWI_LOCK_ASSERT(sc);
2763         if (sc->fw_state == IWI_FW_SCANNING) {
2764                 /*
2765                  * This should not happen as we only trigger scan_next after
2766                  * completion
2767                  */
2768                 DPRINTF(("%s: called too early - still scanning\n", __func__));
2769                 return (EBUSY);
2770         }
2771         IWI_STATE_BEGIN(sc, IWI_FW_SCANNING);
2772
2773         ss = ic->ic_scan;
2774
2775         memset(&scan, 0, sizeof scan);
2776         scan.full_scan_index = htole32(++sc->sc_scangen);
2777         scan.dwell_time[IWI_SCAN_TYPE_PASSIVE] = htole16(maxdwell);
2778         if (ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) {
2779                 /*
2780                  * Use very short dwell times for when we send probe request
2781                  * frames.  Without this bg scans hang.  Ideally this should
2782                  * be handled with early-termination as done by net80211 but
2783                  * that's not feasible (aborting a scan is problematic).
2784                  */
2785                 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(30);
2786                 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(30);
2787         } else {
2788                 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(maxdwell);
2789                 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(maxdwell);
2790         }
2791
2792         /* We can only set one essid for a directed scan */
2793         if (ss->ss_nssid != 0) {
2794                 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ss->ss_ssid[0].ssid,
2795                     ss->ss_ssid[0].len);
2796                 if (error)
2797                         return (error);
2798         }
2799
2800         if (allchan) {
2801                 int i, next, band, b, bstart;
2802                 /*
2803                  * Convert scan list to run-length encoded channel list
2804                  * the firmware requires (preserving the order setup by
2805                  * net80211).  The first entry in each run specifies the
2806                  * band and the count of items in the run.
2807                  */
2808                 next = 0;               /* next open slot */
2809                 bstart = 0;             /* NB: not needed, silence compiler */
2810                 band = -1;              /* NB: impossible value */
2811                 KASSERT(ss->ss_last > 0, ("no channels"));
2812                 for (i = 0; i < ss->ss_last; i++) {
2813                         chan = ss->ss_chans[i];
2814                         b = scan_band(chan);
2815                         if (b != band) {
2816                                 if (band != -1)
2817                                         scan.channels[bstart] =
2818                                             (next - bstart) | band;
2819                                 /* NB: this allocates a slot for the run-len */
2820                                 band = b, bstart = next++;
2821                         }
2822                         if (next >= IWI_SCAN_CHANNELS) {
2823                                 DPRINTF(("truncating scan list\n"));
2824                                 break;
2825                         }
2826                         scan.channels[next] = ieee80211_chan2ieee(ic, chan);
2827                         set_scan_type(&scan, next, scan_type(ss, chan));
2828                         next++;
2829                 }
2830                 scan.channels[bstart] = (next - bstart) | band;
2831         } else {
2832                 /* Scan the current channel only */
2833                 chan = ic->ic_curchan;
2834                 scan.channels[0] = 1 | scan_band(chan);
2835                 scan.channels[1] = ieee80211_chan2ieee(ic, chan);
2836                 set_scan_type(&scan, 1, scan_type(ss, chan));
2837         }
2838 #ifdef IWI_DEBUG
2839         if (iwi_debug > 0) {
2840                 static const char *scantype[8] =
2841                    { "PSTOP", "PASV", "DIR", "BCAST", "BDIR", "5", "6", "7" };
2842                 int i;
2843                 kprintf("Scan request: index %u dwell %d/%d/%d\n"
2844                     , le32toh(scan.full_scan_index)
2845                     , le16toh(scan.dwell_time[IWI_SCAN_TYPE_PASSIVE])
2846                     , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BROADCAST])
2847                     , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED])
2848                 );
2849                 i = 0;
2850                 do {
2851                         int run = scan.channels[i];
2852                         if (run == 0)
2853                                 break;
2854                         kprintf("Scan %d %s channels:", run & 0x3f,
2855                             run & IWI_CHAN_2GHZ ? "2.4GHz" : "5GHz");
2856                         for (run &= 0x3f, i++; run > 0; run--, i++) {
2857                                 uint8_t type = scan.scan_type[i/2];
2858                                 kprintf(" %u/%s", scan.channels[i],
2859                                     scantype[(i & 1 ? type : type>>4) & 7]);
2860                         }
2861                         kprintf("\n");
2862                 } while (i < IWI_SCAN_CHANNELS);
2863         }
2864 #endif
2865
2866         return (iwi_cmd(sc, IWI_CMD_SCAN_EXT, &scan, sizeof scan));
2867 }
2868
2869 static int
2870 iwi_set_sensitivity(struct iwi_softc *sc, int8_t rssi_dbm)
2871 {
2872         struct iwi_sensitivity sens;
2873
2874         DPRINTF(("Setting sensitivity to %d\n", rssi_dbm));
2875
2876         memset(&sens, 0, sizeof sens);
2877         sens.rssi = htole16(rssi_dbm);
2878         return iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &sens, sizeof sens);
2879 }
2880
2881 static int
2882 iwi_auth_and_assoc(struct iwi_softc *sc, struct ieee80211vap *vap)
2883 {
2884         struct ieee80211com *ic = vap->iv_ic;
2885         struct ifnet *ifp = vap->iv_ifp;
2886         struct ieee80211_node *ni;
2887         struct iwi_configuration config;
2888         struct iwi_associate *assoc = &sc->assoc;
2889         struct iwi_rateset rs;
2890         uint16_t capinfo;
2891         uint32_t data;
2892         int error, mode;
2893
2894         IWI_LOCK_ASSERT(sc);
2895
2896         ni = ieee80211_ref_node(vap->iv_bss);
2897
2898         if (sc->flags & IWI_FLAG_ASSOCIATED) {
2899                 DPRINTF(("Already associated\n"));
2900                 return (-1);
2901         }
2902
2903         IWI_STATE_BEGIN(sc, IWI_FW_ASSOCIATING);
2904         error = 0;
2905         mode = 0;
2906
2907         if (IEEE80211_IS_CHAN_A(ic->ic_curchan))
2908                 mode = IWI_MODE_11A;
2909         else if (IEEE80211_IS_CHAN_G(ic->ic_curchan))
2910                 mode = IWI_MODE_11G;
2911         if (IEEE80211_IS_CHAN_B(ic->ic_curchan))
2912                 mode = IWI_MODE_11B;
2913
2914         if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2915                 memset(&config, 0, sizeof config);
2916                 config.bluetooth_coexistence = sc->bluetooth;
2917                 config.antenna = sc->antenna;
2918                 config.multicast_enabled = 1;
2919                 if (mode == IWI_MODE_11G)
2920                         config.use_protection = 1;
2921                 config.answer_pbreq =
2922                     (vap->iv_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2923                 config.disable_unicast_decryption = 1;
2924                 config.disable_multicast_decryption = 1;
2925                 DPRINTF(("Configuring adapter\n"));
2926                 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2927                 if (error != 0)
2928                         goto done;
2929         }
2930
2931 #ifdef IWI_DEBUG
2932         if (iwi_debug > 0) {
2933                 kprintf("Setting ESSID to ");
2934                 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
2935                 kprintf("\n");
2936         }
2937 #endif
2938         error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen);
2939         if (error != 0)
2940                 goto done;
2941
2942         error = iwi_setpowermode(sc, vap);
2943         if (error != 0)
2944                 goto done;
2945
2946         data = htole32(vap->iv_rtsthreshold);
2947         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2948         error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2949         if (error != 0)
2950                 goto done;
2951
2952         data = htole32(vap->iv_fragthreshold);
2953         DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data)));
2954         error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2955         if (error != 0)
2956                 goto done;
2957
2958         /* the rate set has already been "negotiated" */
2959         memset(&rs, 0, sizeof rs);
2960         rs.mode = mode;
2961         rs.type = IWI_RATESET_TYPE_NEGOTIATED;
2962         rs.nrates = ni->ni_rates.rs_nrates;
2963         if (rs.nrates > IWI_RATESET_SIZE) {
2964                 DPRINTF(("Truncating negotiated rate set from %u\n",
2965                     rs.nrates));
2966                 rs.nrates = IWI_RATESET_SIZE;
2967         }
2968         memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates);
2969         DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates));
2970         error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2971         if (error != 0)
2972                 goto done;
2973
2974         memset(assoc, 0, sizeof *assoc);
2975
2976         if ((vap->iv_flags & IEEE80211_F_WME) && ni->ni_ies.wme_ie != NULL) {
2977                 /* NB: don't treat WME setup as failure */
2978                 if (iwi_wme_setparams(sc) == 0 && iwi_wme_setie(sc) == 0)
2979                         assoc->policy |= htole16(IWI_POLICY_WME);
2980                 /* XXX complain on failure? */
2981         }
2982
2983         if (vap->iv_appie_wpa != NULL) {
2984                 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2985
2986                 DPRINTF(("Setting optional IE (len=%u)\n", ie->ie_len));
2987                 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ie->ie_data, ie->ie_len);
2988                 if (error != 0)
2989                         goto done;
2990         }
2991
2992         error = iwi_set_sensitivity(sc, ic->ic_node_getrssi(ni));
2993         if (error != 0)
2994                 goto done;
2995
2996         assoc->mode = mode;
2997         assoc->chan = ic->ic_curchan->ic_ieee;
2998         /*
2999          * NB: do not arrange for shared key auth w/o privacy
3000          *     (i.e. a wep key); it causes a firmware error.
3001          */
3002         if ((vap->iv_flags & IEEE80211_F_PRIVACY) &&
3003             ni->ni_authmode == IEEE80211_AUTH_SHARED) {
3004                 assoc->auth = IWI_AUTH_SHARED;
3005                 /*
3006                  * It's possible to have privacy marked but no default
3007                  * key setup.  This typically is due to a user app bug
3008                  * but if we blindly grab the key the firmware will
3009                  * barf so avoid it for now.
3010                  */
3011                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE)
3012                         assoc->auth |= vap->iv_def_txkey << 4;
3013
3014                 error = iwi_setwepkeys(sc, vap);
3015                 if (error != 0)
3016                         goto done;
3017         }
3018         if (vap->iv_flags & IEEE80211_F_WPA)
3019                 assoc->policy |= htole16(IWI_POLICY_WPA);
3020         if (vap->iv_opmode == IEEE80211_M_IBSS && ni->ni_tstamp.tsf == 0)
3021                 assoc->type = IWI_HC_IBSS_START;
3022         else
3023                 assoc->type = IWI_HC_ASSOC;
3024         memcpy(assoc->tstamp, ni->ni_tstamp.data, 8);
3025
3026         if (vap->iv_opmode == IEEE80211_M_IBSS)
3027                 capinfo = IEEE80211_CAPINFO_IBSS;
3028         else
3029                 capinfo = IEEE80211_CAPINFO_ESS;
3030         if (vap->iv_flags & IEEE80211_F_PRIVACY)
3031                 capinfo |= IEEE80211_CAPINFO_PRIVACY;
3032         if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
3033             IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
3034                 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
3035         if (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)
3036                 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME;
3037         assoc->capinfo = htole16(capinfo);
3038
3039         assoc->lintval = htole16(ic->ic_lintval);
3040         assoc->intval = htole16(ni->ni_intval);
3041         IEEE80211_ADDR_COPY(assoc->bssid, ni->ni_bssid);
3042         if (vap->iv_opmode == IEEE80211_M_IBSS)
3043                 IEEE80211_ADDR_COPY(assoc->dst, ifp->if_broadcastaddr);
3044         else
3045                 IEEE80211_ADDR_COPY(assoc->dst, ni->ni_bssid);
3046
3047 #if defined(__DragonFly__)
3048         DPRINTF(("%s bssid %s dst %s channel %u policy 0x%x "
3049             "auth %u capinfo 0x%x lintval %u bintval %u\n",
3050             assoc->type == IWI_HC_IBSS_START ? "Start" : "Join",
3051             ether_sprintf(assoc->bssid), ether_sprintf(assoc->dst),
3052             assoc->chan, le16toh(assoc->policy), assoc->auth,
3053             le16toh(assoc->capinfo), le16toh(assoc->lintval),
3054             le16toh(assoc->intval)));
3055 #else
3056         DPRINTF(("%s bssid %6D dst %6D channel %u policy 0x%x "
3057             "auth %u capinfo 0x%x lintval %u bintval %u\n",
3058             assoc->type == IWI_HC_IBSS_START ? "Start" : "Join",
3059             assoc->bssid, ":", assoc->dst, ":",
3060             assoc->chan, le16toh(assoc->policy), assoc->auth,
3061             le16toh(assoc->capinfo), le16toh(assoc->lintval),
3062             le16toh(assoc->intval)));
3063 #endif
3064         error = iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
3065 done:
3066         ieee80211_free_node(ni);
3067         if (error)
3068                 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
3069
3070         return (error);
3071 }
3072
3073 static void
3074 iwi_disassoc(void *arg, int pending)
3075 {
3076         struct iwi_softc *sc = arg;
3077         IWI_LOCK_DECL;
3078
3079         IWI_LOCK(sc);
3080         iwi_disassociate(sc, 0);
3081         IWI_UNLOCK(sc);
3082 }
3083
3084 static int
3085 iwi_disassociate(struct iwi_softc *sc, int quiet)
3086 {
3087         struct iwi_associate *assoc = &sc->assoc;
3088
3089         if ((sc->flags & IWI_FLAG_ASSOCIATED) == 0) {
3090                 DPRINTF(("Not associated\n"));
3091                 return (-1);
3092         }
3093
3094         IWI_STATE_BEGIN(sc, IWI_FW_DISASSOCIATING);
3095
3096         if (quiet)
3097                 assoc->type = IWI_HC_DISASSOC_QUIET;
3098         else
3099                 assoc->type = IWI_HC_DISASSOC;
3100
3101 #if defined(__DragonFly__)
3102         DPRINTF(("Trying to disassociate from %s channel %u\n",
3103             ether_sprintf(assoc->bssid), assoc->chan));
3104 #else
3105         DPRINTF(("Trying to disassociate from %6D channel %u\n",
3106             assoc->bssid, ":", assoc->chan));
3107 #endif
3108         return iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
3109 }
3110
3111 /*
3112  * release dma resources for the firmware
3113  */
3114 static void
3115 iwi_release_fw_dma(struct iwi_softc *sc)
3116 {
3117         if (sc->fw_flags & IWI_FW_HAVE_PHY)
3118                 bus_dmamap_unload(sc->fw_dmat, sc->fw_map);
3119         if (sc->fw_flags & IWI_FW_HAVE_MAP)
3120                 bus_dmamem_free(sc->fw_dmat, sc->fw_virtaddr, sc->fw_map);
3121         if (sc->fw_flags & IWI_FW_HAVE_DMAT)
3122                 bus_dma_tag_destroy(sc->fw_dmat);
3123
3124         sc->fw_flags = 0;
3125         sc->fw_dma_size = 0;
3126         sc->fw_dmat = NULL;
3127         sc->fw_map = NULL;
3128         sc->fw_physaddr = 0;
3129         sc->fw_virtaddr = NULL;
3130 }
3131
3132 /*
3133  * allocate the dma descriptor for the firmware.
3134  * Return 0 on success, 1 on error.
3135  * Must be called unlocked, protected by IWI_FLAG_FW_LOADING.
3136  */
3137 static int
3138 iwi_init_fw_dma(struct iwi_softc *sc, int size)
3139 {
3140         if (sc->fw_dma_size >= size)
3141                 return 0;
3142 #if defined(__DragonFly__)
3143         if (bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
3144             BUS_SPACE_MAXADDR, size, 1, size,
3145             0, &sc->fw_dmat) != 0) {
3146 #else
3147         if (bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
3148             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
3149             size, 1, size, 0, NULL, NULL, &sc->fw_dmat) != 0) {
3150 #endif
3151                 device_printf(sc->sc_dev,
3152                     "could not create firmware DMA tag\n");
3153                 goto error;
3154         }
3155         sc->fw_flags |= IWI_FW_HAVE_DMAT;
3156         if (bus_dmamem_alloc(sc->fw_dmat, &sc->fw_virtaddr, 0,
3157             &sc->fw_map) != 0) {
3158                 device_printf(sc->sc_dev,
3159                     "could not allocate firmware DMA memory\n");
3160                 goto error;
3161         }
3162         sc->fw_flags |= IWI_FW_HAVE_MAP;
3163         if (bus_dmamap_load(sc->fw_dmat, sc->fw_map, sc->fw_virtaddr,
3164             size, iwi_dma_map_addr, &sc->fw_physaddr, 0) != 0) {
3165                 device_printf(sc->sc_dev, "could not load firmware DMA map\n");
3166                 goto error;
3167         }
3168         sc->fw_flags |= IWI_FW_HAVE_PHY;
3169         sc->fw_dma_size = size;
3170         return 0;
3171
3172 error:
3173         iwi_release_fw_dma(sc);
3174         return 1;
3175 }
3176
3177 static void
3178 iwi_init_locked(struct iwi_softc *sc)
3179 {
3180         struct iwi_rx_data *data;
3181         int i;
3182
3183         IWI_LOCK_ASSERT(sc);
3184
3185         if (sc->fw_state == IWI_FW_LOADING) {
3186                 device_printf(sc->sc_dev, "%s: already loading\n", __func__);
3187                 return;         /* XXX: condvar? */
3188         }
3189
3190         iwi_stop_locked(sc);
3191
3192         IWI_STATE_BEGIN(sc, IWI_FW_LOADING);
3193
3194         if (iwi_reset(sc) != 0) {
3195                 device_printf(sc->sc_dev, "could not reset adapter\n");
3196                 goto fail;
3197         }
3198         if (iwi_load_firmware(sc, &sc->fw_boot) != 0) {
3199                 device_printf(sc->sc_dev,
3200                     "could not load boot firmware %s\n", sc->fw_boot.name);
3201                 goto fail;
3202         }
3203         if (iwi_load_ucode(sc, &sc->fw_uc) != 0) {
3204                 device_printf(sc->sc_dev,
3205                     "could not load microcode %s\n", sc->fw_uc.name);
3206                 goto fail;
3207         }
3208
3209         iwi_stop_master(sc);
3210
3211         CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.physaddr);
3212         CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count);
3213         CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
3214
3215         CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq[0].physaddr);
3216         CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq[0].count);
3217         CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq[0].cur);
3218
3219         CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq[1].physaddr);
3220         CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq[1].count);
3221         CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq[1].cur);
3222
3223         CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq[2].physaddr);
3224         CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq[2].count);
3225         CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq[2].cur);
3226
3227         CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq[3].physaddr);
3228         CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq[3].count);
3229         CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq[3].cur);
3230
3231         for (i = 0; i < sc->rxq.count; i++) {
3232                 data = &sc->rxq.data[i];
3233                 CSR_WRITE_4(sc, data->reg, data->physaddr);
3234         }
3235
3236         CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count - 1);
3237
3238         if (iwi_load_firmware(sc, &sc->fw_fw) != 0) {
3239                 device_printf(sc->sc_dev,
3240                     "could not load main firmware %s\n", sc->fw_fw.name);
3241                 goto fail;
3242         }
3243         sc->flags |= IWI_FLAG_FW_INITED;
3244
3245         IWI_STATE_END(sc, IWI_FW_LOADING);
3246
3247         if (iwi_config(sc) != 0) {
3248                 device_printf(sc->sc_dev, "unable to enable adapter\n");
3249                 goto fail2;
3250         }
3251
3252         callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
3253         sc->sc_running = 1;
3254         return;
3255 fail:
3256         IWI_STATE_END(sc, IWI_FW_LOADING);
3257 fail2:
3258         iwi_stop_locked(sc);
3259 }
3260
3261 static void
3262 iwi_init(void *priv)
3263 {
3264         struct iwi_softc *sc = priv;
3265         struct ieee80211com *ic = &sc->sc_ic;
3266         IWI_LOCK_DECL;
3267
3268         IWI_LOCK(sc);
3269         iwi_init_locked(sc);
3270         IWI_UNLOCK(sc);
3271
3272         if (sc->sc_running)
3273                 ieee80211_start_all(ic);
3274 }
3275
3276 static void
3277 iwi_stop_locked(void *priv)
3278 {
3279         struct iwi_softc *sc = priv;
3280
3281         IWI_LOCK_ASSERT(sc);
3282
3283         sc->sc_running = 0;
3284
3285         if (sc->sc_softled) {
3286                 callout_stop(&sc->sc_ledtimer);
3287                 sc->sc_blinking = 0;
3288         }
3289         callout_stop(&sc->sc_wdtimer);
3290         callout_stop(&sc->sc_rftimer);
3291
3292         iwi_stop_master(sc);
3293
3294         CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SOFT_RESET);
3295
3296         /* reset rings */
3297         iwi_reset_cmd_ring(sc, &sc->cmdq);
3298         iwi_reset_tx_ring(sc, &sc->txq[0]);
3299         iwi_reset_tx_ring(sc, &sc->txq[1]);
3300         iwi_reset_tx_ring(sc, &sc->txq[2]);
3301         iwi_reset_tx_ring(sc, &sc->txq[3]);
3302         iwi_reset_rx_ring(sc, &sc->rxq);
3303
3304         sc->sc_tx_timer = 0;
3305         sc->sc_state_timer = 0;
3306         sc->sc_busy_timer = 0;
3307         sc->flags &= ~(IWI_FLAG_BUSY | IWI_FLAG_ASSOCIATED);
3308         sc->fw_state = IWI_FW_IDLE;
3309         wakeup(sc);
3310 }
3311
3312 static void
3313 iwi_stop(struct iwi_softc *sc)
3314 {
3315         IWI_LOCK_DECL;
3316
3317         IWI_LOCK(sc);
3318         iwi_stop_locked(sc);
3319         IWI_UNLOCK(sc);
3320 }
3321
3322 static void
3323 iwi_restart(void *arg, int npending)
3324 {
3325         struct iwi_softc *sc = arg;
3326
3327         iwi_init(sc);
3328 }
3329
3330 /*
3331  * Return whether or not the radio is enabled in hardware
3332  * (i.e. the rfkill switch is "off").
3333  */
3334 static int
3335 iwi_getrfkill(struct iwi_softc *sc)
3336 {
3337         return (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) == 0;
3338 }
3339
3340 static void
3341 iwi_radio_on(void *arg, int pending)
3342 {
3343         struct iwi_softc *sc = arg;
3344         struct ieee80211com *ic = &sc->sc_ic;
3345
3346         device_printf(sc->sc_dev, "radio turned on\n");
3347
3348         iwi_init(sc);
3349         ieee80211_notify_radio(ic, 1);
3350 }
3351
3352 static void
3353 iwi_rfkill_poll(void *arg)
3354 {
3355         struct iwi_softc *sc = arg;
3356
3357         IWI_LOCK_ASSERT(sc);
3358
3359         /*
3360          * Check for a change in rfkill state.  We get an
3361          * interrupt when a radio is disabled but not when
3362          * it is enabled so we must poll for the latter.
3363          */
3364         if (!iwi_getrfkill(sc)) {
3365                 ieee80211_runtask(&sc->sc_ic, &sc->sc_radiontask);
3366                 return;
3367         }
3368         callout_reset(&sc->sc_rftimer, 2*hz, iwi_rfkill_poll, sc);
3369 }
3370
3371 static void
3372 iwi_radio_off(void *arg, int pending)
3373 {
3374         struct iwi_softc *sc = arg;
3375         struct ieee80211com *ic = &sc->sc_ic;
3376         IWI_LOCK_DECL;
3377
3378         device_printf(sc->sc_dev, "radio turned off\n");
3379
3380         ieee80211_notify_radio(ic, 0);
3381
3382         IWI_LOCK(sc);
3383         iwi_stop_locked(sc);
3384         iwi_rfkill_poll(sc);
3385         IWI_UNLOCK(sc);
3386 }
3387
3388 static int
3389 iwi_sysctl_stats(SYSCTL_HANDLER_ARGS)
3390 {
3391         struct iwi_softc *sc = arg1;
3392         uint32_t size, buf[128];
3393
3394         memset(buf, 0, sizeof buf);
3395
3396         if (!(sc->flags & IWI_FLAG_FW_INITED))
3397                 return SYSCTL_OUT(req, buf, sizeof buf);
3398
3399         size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1);
3400         CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size);
3401
3402         return SYSCTL_OUT(req, buf, size);
3403 }
3404
3405 static int
3406 iwi_sysctl_radio(SYSCTL_HANDLER_ARGS)
3407 {
3408         struct iwi_softc *sc = arg1;
3409         int val = !iwi_getrfkill(sc);
3410
3411         return SYSCTL_OUT(req, &val, sizeof val);
3412 }
3413
3414 /*
3415  * Add sysctl knobs.
3416  */
3417 static void
3418 iwi_sysctlattach(struct iwi_softc *sc)
3419 {
3420         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
3421         struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
3422
3423         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "radio",
3424             CTLTYPE_INT | CTLFLAG_RD, sc, 0, iwi_sysctl_radio, "I",
3425             "radio transmitter switch state (0=off, 1=on)");
3426
3427         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "stats",
3428             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, iwi_sysctl_stats, "S",
3429             "statistics");
3430
3431         sc->bluetooth = 0;
3432         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "bluetooth",
3433             CTLFLAG_RW, &sc->bluetooth, 0, "bluetooth coexistence");
3434
3435         sc->antenna = IWI_ANTENNA_AUTO;
3436         SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "antenna",
3437             CTLFLAG_RW, &sc->antenna, 0, "antenna (0=auto)");
3438 }
3439
3440 /*
3441  * LED support.
3442  *
3443  * Different cards have different capabilities.  Some have three
3444  * led's while others have only one.  The linux ipw driver defines
3445  * led's for link state (associated or not), band (11a, 11g, 11b),
3446  * and for link activity.  We use one led and vary the blink rate
3447  * according to the tx/rx traffic a la the ath driver.
3448  */
3449
3450 static __inline uint32_t
3451 iwi_toggle_event(uint32_t r)
3452 {
3453         return r &~ (IWI_RST_STANDBY | IWI_RST_GATE_ODMA |
3454                      IWI_RST_GATE_IDMA | IWI_RST_GATE_ADMA);
3455 }
3456
3457 static uint32_t
3458 iwi_read_event(struct iwi_softc *sc)
3459 {
3460         return MEM_READ_4(sc, IWI_MEM_EEPROM_EVENT);
3461 }
3462
3463 static void
3464 iwi_write_event(struct iwi_softc *sc, uint32_t v)
3465 {
3466         MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, v);
3467 }
3468
3469 static void
3470 iwi_led_done(void *arg)
3471 {
3472         struct iwi_softc *sc = arg;
3473
3474         sc->sc_blinking = 0;
3475 }
3476
3477 /*
3478  * Turn the activity LED off: flip the pin and then set a timer so no
3479  * update will happen for the specified duration.
3480  */
3481 static void
3482 iwi_led_off(void *arg)
3483 {
3484         struct iwi_softc *sc = arg;
3485         uint32_t v;
3486
3487         v = iwi_read_event(sc);
3488         v &= ~sc->sc_ledpin;
3489         iwi_write_event(sc, iwi_toggle_event(v));
3490         callout_reset(&sc->sc_ledtimer, sc->sc_ledoff, iwi_led_done, sc);
3491 }
3492
3493 /*
3494  * Blink the LED according to the specified on/off times.
3495  */
3496 static void
3497 iwi_led_blink(struct iwi_softc *sc, int on, int off)
3498 {
3499         uint32_t v;
3500
3501         v = iwi_read_event(sc);
3502         v |= sc->sc_ledpin;
3503         iwi_write_event(sc, iwi_toggle_event(v));
3504         sc->sc_blinking = 1;
3505         sc->sc_ledoff = off;
3506         callout_reset(&sc->sc_ledtimer, on, iwi_led_off, sc);
3507 }
3508
3509 static void
3510 iwi_led_event(struct iwi_softc *sc, int event)
3511 {
3512         /* NB: on/off times from the Atheros NDIS driver, w/ permission */
3513         static const struct {
3514                 u_int           rate;           /* tx/rx iwi rate */
3515                 u_int16_t       timeOn;         /* LED on time (ms) */
3516                 u_int16_t       timeOff;        /* LED off time (ms) */
3517         } blinkrates[] = {
3518                 { IWI_RATE_OFDM54, 40,  10 },
3519                 { IWI_RATE_OFDM48, 44,  11 },
3520                 { IWI_RATE_OFDM36, 50,  13 },
3521                 { IWI_RATE_OFDM24, 57,  14 },
3522                 { IWI_RATE_OFDM18, 67,  16 },
3523                 { IWI_RATE_OFDM12, 80,  20 },
3524                 { IWI_RATE_DS11,  100,  25 },
3525                 { IWI_RATE_OFDM9, 133,  34 },
3526                 { IWI_RATE_OFDM6, 160,  40 },
3527                 { IWI_RATE_DS5,   200,  50 },
3528                 {            6,   240,  58 },   /* XXX 3Mb/s if it existed */
3529                 { IWI_RATE_DS2,   267,  66 },
3530                 { IWI_RATE_DS1,   400, 100 },
3531                 {            0,   500, 130 },   /* unknown rate/polling */
3532         };
3533         uint32_t txrate;
3534         int j = 0;                      /* XXX silence compiler */
3535
3536         sc->sc_ledevent = ticks;        /* time of last event */
3537         if (sc->sc_blinking)            /* don't interrupt active blink */
3538                 return;
3539         switch (event) {
3540         case IWI_LED_POLL:
3541                 j = nitems(blinkrates)-1;
3542                 break;
3543         case IWI_LED_TX:
3544                 /* read current transmission rate from adapter */
3545                 txrate = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE);
3546                 if (blinkrates[sc->sc_txrix].rate != txrate) {
3547                         for (j = 0; j < nitems(blinkrates)-1; j++)
3548                                 if (blinkrates[j].rate == txrate)
3549                                         break;
3550                         sc->sc_txrix = j;
3551                 } else
3552                         j = sc->sc_txrix;
3553                 break;
3554         case IWI_LED_RX:
3555                 if (blinkrates[sc->sc_rxrix].rate != sc->sc_rxrate) {
3556                         for (j = 0; j < nitems(blinkrates)-1; j++)
3557                                 if (blinkrates[j].rate == sc->sc_rxrate)
3558                                         break;
3559                         sc->sc_rxrix = j;
3560                 } else
3561                         j = sc->sc_rxrix;
3562                 break;
3563         }
3564         /* XXX beware of overflow */
3565         iwi_led_blink(sc, (blinkrates[j].timeOn * hz) / 1000,
3566                 (blinkrates[j].timeOff * hz) / 1000);
3567 }
3568
3569 static int
3570 iwi_sysctl_softled(SYSCTL_HANDLER_ARGS)
3571 {
3572         struct iwi_softc *sc = arg1;
3573         int softled = sc->sc_softled;
3574         int error;
3575
3576         error = sysctl_handle_int(oidp, &softled, 0, req);
3577         if (error || !req->newptr)
3578                 return error;
3579         softled = (softled != 0);
3580         if (softled != sc->sc_softled) {
3581                 if (softled) {
3582                         uint32_t v = iwi_read_event(sc);
3583                         v &= ~sc->sc_ledpin;
3584                         iwi_write_event(sc, iwi_toggle_event(v));
3585                 }
3586                 sc->sc_softled = softled;
3587         }
3588         return 0;
3589 }
3590
3591 static void
3592 iwi_ledattach(struct iwi_softc *sc)
3593 {
3594         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
3595         struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
3596
3597         sc->sc_blinking = 0;
3598         sc->sc_ledstate = 1;
3599         sc->sc_ledidle = (2700*hz)/1000;        /* 2.7sec */
3600 #if defined(__DragonFly__)
3601         callout_init_lk(&sc->sc_ledtimer, &sc->sc_lock);
3602 #else
3603         callout_init_mtx(&sc->sc_ledtimer, &sc->sc_mtx, 0);
3604 #endif
3605
3606         SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3607                 "softled", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
3608                 iwi_sysctl_softled, "I", "enable/disable software LED support");
3609         SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3610                 "ledpin", CTLFLAG_RW, &sc->sc_ledpin, 0,
3611                 "pin setting to turn activity LED on");
3612         SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3613                 "ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0,
3614                 "idle time for inactivity LED (ticks)");
3615         /* XXX for debugging */
3616         SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3617                 "nictype", CTLFLAG_RD, &sc->sc_nictype, 0,
3618                 "NIC type from EEPROM");
3619
3620         sc->sc_ledpin = IWI_RST_LED_ACTIVITY;
3621         sc->sc_softled = 1;
3622
3623         sc->sc_nictype = (iwi_read_prom_word(sc, IWI_EEPROM_NIC) >> 8) & 0xff;
3624         if (sc->sc_nictype == 1) {
3625                 /*
3626                  * NB: led's are reversed.
3627                  */
3628                 sc->sc_ledpin = IWI_RST_LED_ASSOCIATED;
3629         }
3630 }
3631
3632 static void
3633 iwi_scan_start(struct ieee80211com *ic)
3634 {
3635         /* ignore */
3636 }
3637
3638 static void
3639 iwi_set_channel(struct ieee80211com *ic)
3640 {
3641         struct iwi_softc *sc = ic->ic_softc;
3642
3643         if (sc->fw_state == IWI_FW_IDLE)
3644                 iwi_setcurchan(sc, ic->ic_curchan->ic_ieee);
3645 }
3646
3647 static void
3648 iwi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
3649 {
3650         struct ieee80211vap *vap = ss->ss_vap;
3651         struct iwi_softc *sc = vap->iv_ic->ic_softc;
3652         IWI_LOCK_DECL;
3653
3654         IWI_LOCK(sc);
3655         if (iwi_scanchan(sc, maxdwell, 0))
3656                 ieee80211_cancel_scan(vap);
3657         IWI_UNLOCK(sc);
3658 }
3659
3660 static void
3661 iwi_scan_mindwell(struct ieee80211_scan_state *ss)
3662 {
3663         /* NB: don't try to abort scan; wait for firmware to finish */
3664 }
3665
3666 static void
3667 iwi_scan_end(struct ieee80211com *ic)
3668 {
3669         struct iwi_softc *sc = ic->ic_softc;
3670         IWI_LOCK_DECL;
3671
3672         IWI_LOCK(sc);
3673         sc->flags &= ~IWI_FLAG_CHANNEL_SCAN;
3674         /* NB: make sure we're still scanning */
3675         if (sc->fw_state == IWI_FW_SCANNING)
3676                 iwi_cmd(sc, IWI_CMD_ABORT_SCAN, NULL, 0);
3677         IWI_UNLOCK(sc);
3678 }