sys/dev/ipw/if_ipw.c

   1 /*-
   2  * Copyright (c) 2004-2006
   3  *      Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
   4  * Copyright (c) 2006 Sam Leffler, Errno Consulting
   5  * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice unmodified, this list of conditions, and the following
  12  *    disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 /*-
  34  * Intel(R) PRO/Wireless 2100 MiniPCI driver
  35  * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/sysctl.h>
  40 #include <sys/sockio.h>
  41 #include <sys/mbuf.h>
  42 #include <sys/kernel.h>
  43 #include <sys/socket.h>
  44 #include <sys/systm.h>
  45 #include <sys/malloc.h>
  46 #include <sys/queue.h>
  47 #include <sys/taskqueue.h>
  48 #include <sys/module.h>
  49 #include <sys/bus.h>
  50 #include <sys/endian.h>
  51 #include <sys/linker.h>
  52 #include <sys/firmware.h>
  53
  54 #include <machine/bus.h>
  55 #include <machine/resource.h>
  56 #include <sys/rman.h>
  57
  58 #include <dev/pci/pcireg.h>
  59 #include <dev/pci/pcivar.h>
  60
  61 #include <net/bpf.h>
  62 #include <net/if.h>
  63 #include <net/if_var.h>
  64 #include <net/if_arp.h>
  65 #include <net/ethernet.h>
  66 #include <net/if_dl.h>
  67 #include <net/if_media.h>
  68 #include <net/if_types.h>
  69
  70 #include <net80211/ieee80211_var.h>
  71 #include <net80211/ieee80211_radiotap.h>
  72
  73 #include <netinet/in.h>
  74 #include <netinet/in_systm.h>
  75 #include <netinet/in_var.h>
  76 #include <netinet/ip.h>
  77 #include <netinet/if_ether.h>
  78
  79 #include <dev/ipw/if_ipwreg.h>
  80 #include <dev/ipw/if_ipwvar.h>
  81
  82 #define IPW_DEBUG
  83 #ifdef IPW_DEBUG
  84 #define DPRINTF(x)      do { if (ipw_debug > 0) printf x; } while (0)
  85 #define DPRINTFN(n, x)  do { if (ipw_debug >= (n)) printf x; } while (0)
  86 int ipw_debug = 0;
  87 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level");
  88 #else
  89 #define DPRINTF(x)
  90 #define DPRINTFN(n, x)
  91 #endif
  92
  93 MODULE_DEPEND(ipw, pci,  1, 1, 1);
  94 MODULE_DEPEND(ipw, wlan, 1, 1, 1);
  95 MODULE_DEPEND(ipw, firmware, 1, 1, 1);
  96
  97 struct ipw_ident {
  98         uint16_t        vendor;
  99         uint16_t        device;
 100         const char      *name;
 101 };
 102
 103 static const struct ipw_ident ipw_ident_table[] = {
 104         { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" },
 105
 106         { 0, 0, NULL }
 107 };
 108
 109 static struct ieee80211vap *ipw_vap_create(struct ieee80211com *,
 110                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
 111                     const uint8_t [IEEE80211_ADDR_LEN],
 112                     const uint8_t [IEEE80211_ADDR_LEN]);
 113 static void     ipw_vap_delete(struct ieee80211vap *);
 114 static int      ipw_dma_alloc(struct ipw_softc *);
 115 static void     ipw_release(struct ipw_softc *);
 116 static void     ipw_media_status(struct ifnet *, struct ifmediareq *);
 117 static int      ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 118 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t);
 119 static void     ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *);
 120 static void     ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *);
 121 static void     ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *,
 122                     struct ipw_soft_bd *, struct ipw_soft_buf *);
 123 static void     ipw_rx_intr(struct ipw_softc *);
 124 static void     ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *);
 125 static void     ipw_tx_intr(struct ipw_softc *);
 126 static void     ipw_intr(void *);
 127 static void     ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int);
 128 static const char * ipw_cmdname(int);
 129 static int      ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t);
 130 static int      ipw_tx_start(struct ifnet *, struct mbuf *,
 131                     struct ieee80211_node *);
 132 static int      ipw_raw_xmit(struct ieee80211_node *, struct mbuf *,
 133                     const struct ieee80211_bpf_params *);
 134 static void     ipw_start(struct ifnet *);
 135 static void     ipw_start_locked(struct ifnet *);
 136 static void     ipw_watchdog(void *);
 137 static int      ipw_ioctl(struct ifnet *, u_long, caddr_t);
 138 static void     ipw_stop_master(struct ipw_softc *);
 139 static int      ipw_enable(struct ipw_softc *);
 140 static int      ipw_disable(struct ipw_softc *);
 141 static int      ipw_reset(struct ipw_softc *);
 142 static int      ipw_load_ucode(struct ipw_softc *, const char *, int);
 143 static int      ipw_load_firmware(struct ipw_softc *, const char *, int);
 144 static int      ipw_config(struct ipw_softc *);
 145 static void     ipw_assoc(struct ieee80211com *, struct ieee80211vap *);
 146 static void     ipw_disassoc(struct ieee80211com *, struct ieee80211vap *);
 147 static void     ipw_init_task(void *, int);
 148 static void     ipw_init(void *);
 149 static void     ipw_init_locked(struct ipw_softc *);
 150 static void     ipw_stop(void *);
 151 static void     ipw_stop_locked(struct ipw_softc *);
 152 static int      ipw_sysctl_stats(SYSCTL_HANDLER_ARGS);
 153 static int      ipw_sysctl_radio(SYSCTL_HANDLER_ARGS);
 154 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t);
 155 static void     ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t);
 156 #if 0
 157 static int      ipw_read_table2(struct ipw_softc *, uint32_t, void *,
 158                     uint32_t *);
 159 static void     ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *,
 160                     bus_size_t);
 161 #endif
 162 static void     ipw_write_mem_1(struct ipw_softc *, bus_size_t,
 163                     const uint8_t *, bus_size_t);
 164 static int      ipw_scan(struct ipw_softc *);
 165 static void     ipw_scan_start(struct ieee80211com *);
 166 static void     ipw_scan_end(struct ieee80211com *);
 167 static void     ipw_set_channel(struct ieee80211com *);
 168 static void     ipw_scan_curchan(struct ieee80211_scan_state *,
 169                     unsigned long maxdwell);
 170 static void     ipw_scan_mindwell(struct ieee80211_scan_state *);
 171
 172 static int ipw_probe(device_t);
 173 static int ipw_attach(device_t);
 174 static int ipw_detach(device_t);
 175 static int ipw_shutdown(device_t);
 176 static int ipw_suspend(device_t);
 177 static int ipw_resume(device_t);
 178
 179 static device_method_t ipw_methods[] = {
 180         /* Device interface */
 181         DEVMETHOD(device_probe,         ipw_probe),
 182         DEVMETHOD(device_attach,        ipw_attach),
 183         DEVMETHOD(device_detach,        ipw_detach),
 184         DEVMETHOD(device_shutdown,      ipw_shutdown),
 185         DEVMETHOD(device_suspend,       ipw_suspend),
 186         DEVMETHOD(device_resume,        ipw_resume),
 187
 188         DEVMETHOD_END
 189 };
 190
 191 static driver_t ipw_driver = {
 192         "ipw",
 193         ipw_methods,
 194         sizeof (struct ipw_softc)
 195 };
 196
 197 static devclass_t ipw_devclass;
 198
 199 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, NULL, NULL);
 200
 201 MODULE_VERSION(ipw, 1);
 202
 203 static int
 204 ipw_probe(device_t dev)
 205 {
 206         const struct ipw_ident *ident;
 207
 208         for (ident = ipw_ident_table; ident->name != NULL; ident++) {
 209                 if (pci_get_vendor(dev) == ident->vendor &&
 210                     pci_get_device(dev) == ident->device) {
 211                         device_set_desc(dev, ident->name);
 212                         return (BUS_PROBE_DEFAULT);
 213                 }
 214         }
 215         return ENXIO;
 216 }
 217
 218 /* Base Address Register */
 219 static int
 220 ipw_attach(device_t dev)
 221 {
 222         struct ipw_softc *sc = device_get_softc(dev);
 223         struct ifnet *ifp;
 224         struct ieee80211com *ic;
 225         struct ieee80211_channel *c;
 226         uint16_t val;
 227         int error, i;
 228         uint8_t macaddr[IEEE80211_ADDR_LEN];
 229
 230         sc->sc_dev = dev;
 231
 232         mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
 233             MTX_DEF | MTX_RECURSE);
 234
 235         TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc);
 236         callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
 237
 238         pci_write_config(dev, 0x41, 0, 1);
 239
 240         /* enable bus-mastering */
 241         pci_enable_busmaster(dev);
 242
 243         i = PCIR_BAR(0);
 244         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
 245         if (sc->mem == NULL) {
 246                 device_printf(dev, "could not allocate memory resource\n");
 247                 goto fail;
 248         }
 249
 250         sc->sc_st = rman_get_bustag(sc->mem);
 251         sc->sc_sh = rman_get_bushandle(sc->mem);
 252
 253         i = 0;
 254         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
 255             RF_ACTIVE | RF_SHAREABLE);
 256         if (sc->irq == NULL) {
 257                 device_printf(dev, "could not allocate interrupt resource\n");
 258                 goto fail1;
 259         }
 260
 261         if (ipw_reset(sc) != 0) {
 262                 device_printf(dev, "could not reset adapter\n");
 263                 goto fail2;
 264         }
 265
 266         if (ipw_dma_alloc(sc) != 0) {
 267                 device_printf(dev, "could not allocate DMA resources\n");
 268                 goto fail2;
 269         }
 270
 271         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 272         if (ifp == NULL) {
 273                 device_printf(dev, "can not if_alloc()\n");
 274                 goto fail3;
 275         }
 276         ic = ifp->if_l2com;
 277
 278         ifp->if_softc = sc;
 279         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 280         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 281         ifp->if_init = ipw_init;
 282         ifp->if_ioctl = ipw_ioctl;
 283         ifp->if_start = ipw_start;
 284         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 285         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 286         IFQ_SET_READY(&ifp->if_snd);
 287
 288         ic->ic_ifp = ifp;
 289         ic->ic_opmode = IEEE80211_M_STA;
 290         ic->ic_phytype = IEEE80211_T_DS;
 291
 292         /* set device capabilities */
 293         ic->ic_caps =
 294                   IEEE80211_C_STA               /* station mode supported */
 295                 | IEEE80211_C_IBSS              /* IBSS mode supported */
 296                 | IEEE80211_C_MONITOR           /* monitor mode supported */
 297                 | IEEE80211_C_PMGT              /* power save supported */
 298                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 299                 | IEEE80211_C_WPA               /* 802.11i supported */
 300                 ;
 301
 302         /* read MAC address from EEPROM */
 303         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0);
 304         macaddr[0] = val >> 8;
 305         macaddr[1] = val & 0xff;
 306         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1);
 307         macaddr[2] = val >> 8;
 308         macaddr[3] = val & 0xff;
 309         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2);
 310         macaddr[4] = val >> 8;
 311         macaddr[5] = val & 0xff;
 312
 313         /* set supported .11b channels (read from EEPROM) */
 314         if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0)
 315                 val = 0x7ff; /* default to channels 1-11 */
 316         val <<= 1;
 317         for (i = 1; i < 16; i++) {
 318                 if (val & (1 << i)) {
 319                         c = &ic->ic_channels[ic->ic_nchans++];
 320                         c->ic_freq = ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 321                         c->ic_flags = IEEE80211_CHAN_B;
 322                         c->ic_ieee = i;
 323                 }
 324         }
 325
 326         /* check support for radio transmitter switch in EEPROM */
 327         if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8))
 328                 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH;
 329
 330         ieee80211_ifattach(ic, macaddr);
 331         ic->ic_scan_start = ipw_scan_start;
 332         ic->ic_scan_end = ipw_scan_end;
 333         ic->ic_set_channel = ipw_set_channel;
 334         ic->ic_scan_curchan = ipw_scan_curchan;
 335         ic->ic_scan_mindwell = ipw_scan_mindwell;
 336         ic->ic_raw_xmit = ipw_raw_xmit;
 337
 338         ic->ic_vap_create = ipw_vap_create;
 339         ic->ic_vap_delete = ipw_vap_delete;
 340
 341         ieee80211_radiotap_attach(ic,
 342             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 343                 IPW_TX_RADIOTAP_PRESENT,
 344             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 345                 IPW_RX_RADIOTAP_PRESENT);
 346
 347         /*
 348          * Add a few sysctl knobs.
 349          */
 350         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 351             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio",
 352             CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I",
 353             "radio transmitter switch state (0=off, 1=on)");
 354
 355         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 356             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
 357             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S",
 358             "statistics");
 359
 360         /*
 361          * Hook our interrupt after all initialization is complete.
 362          */
 363         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 364             NULL, ipw_intr, sc, &sc->sc_ih);
 365         if (error != 0) {
 366                 device_printf(dev, "could not set up interrupt\n");
 367                 goto fail4;
 368         }
 369
 370         if (bootverbose)
 371                 ieee80211_announce(ic);
 372
 373         return 0;
 374 fail4:
 375         if_free(ifp);
 376 fail3:
 377         ipw_release(sc);
 378 fail2:
 379         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 380 fail1:
 381         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
 382             sc->mem);
 383 fail:
 384         mtx_destroy(&sc->sc_mtx);
 385         return ENXIO;
 386 }
 387
 388 static int
 389 ipw_detach(device_t dev)
 390 {
 391         struct ipw_softc *sc = device_get_softc(dev);
 392         struct ifnet *ifp = sc->sc_ifp;
 393         struct ieee80211com *ic = ifp->if_l2com;
 394
 395         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 396
 397         ieee80211_draintask(ic, &sc->sc_init_task);
 398         ipw_stop(sc);
 399
 400         ieee80211_ifdetach(ic);
 401
 402         callout_drain(&sc->sc_wdtimer);
 403
 404         ipw_release(sc);
 405
 406         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 407
 408         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
 409             sc->mem);
 410
 411         if_free(ifp);
 412
 413         if (sc->sc_firmware != NULL) {
 414                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 415                 sc->sc_firmware = NULL;
 416         }
 417
 418         mtx_destroy(&sc->sc_mtx);
 419
 420         return 0;
 421 }
 422
 423 static struct ieee80211vap *
 424 ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 425     enum ieee80211_opmode opmode, int flags,
 426     const uint8_t bssid[IEEE80211_ADDR_LEN],
 427     const uint8_t mac[IEEE80211_ADDR_LEN])
 428 {
 429         struct ifnet *ifp = ic->ic_ifp;
 430         struct ipw_softc *sc = ifp->if_softc;
 431         struct ipw_vap *ivp;
 432         struct ieee80211vap *vap;
 433         const struct firmware *fp;
 434         const struct ipw_firmware_hdr *hdr;
 435         const char *imagename;
 436
 437         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 438                 return NULL;
 439
 440         switch (opmode) {
 441         case IEEE80211_M_STA:
 442                 imagename = "ipw_bss";
 443                 break;
 444         case IEEE80211_M_IBSS:
 445                 imagename = "ipw_ibss";
 446                 break;
 447         case IEEE80211_M_MONITOR:
 448                 imagename = "ipw_monitor";
 449                 break;
 450         default:
 451                 return NULL;
 452         }
 453
 454         /*
 455          * Load firmware image using the firmware(9) subsystem.  Doing
 456          * this unlocked is ok since we're single-threaded by the
 457          * 802.11 layer.
 458          */
 459         if (sc->sc_firmware == NULL ||
 460             strcmp(sc->sc_firmware->name, imagename) != 0) {
 461                 if (sc->sc_firmware != NULL)
 462                         firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 463                 sc->sc_firmware = firmware_get(imagename);
 464         }
 465         if (sc->sc_firmware == NULL) {
 466                 device_printf(sc->sc_dev,
 467                     "could not load firmware image '%s'\n", imagename);
 468                 return NULL;
 469         }
 470         fp = sc->sc_firmware;
 471         if (fp->datasize < sizeof *hdr) {
 472                 device_printf(sc->sc_dev,
 473                     "firmware image too short %zu\n", fp->datasize);
 474                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 475                 sc->sc_firmware = NULL;
 476                 return NULL;
 477         }
 478         hdr = (const struct ipw_firmware_hdr *)fp->data;
 479         if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) +
 480             le32toh(hdr->ucodesz)) {
 481                 device_printf(sc->sc_dev,
 482                     "firmware image too short %zu\n", fp->datasize);
 483                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 484                 sc->sc_firmware = NULL;
 485                 return NULL;
 486         }
 487
 488         ivp = (struct ipw_vap *) malloc(sizeof(struct ipw_vap),
 489             M_80211_VAP, M_NOWAIT | M_ZERO);
 490         if (ivp == NULL)
 491                 return NULL;
 492         vap = &ivp->vap;
 493
 494         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
 495         /* override with driver methods */
 496         ivp->newstate = vap->iv_newstate;
 497         vap->iv_newstate = ipw_newstate;
 498
 499         /* complete setup */
 500         ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status);
 501         ic->ic_opmode = opmode;
 502         return vap;
 503 }
 504
 505 static void
 506 ipw_vap_delete(struct ieee80211vap *vap)
 507 {
 508         struct ipw_vap *ivp = IPW_VAP(vap);
 509
 510         ieee80211_vap_detach(vap);
 511         free(ivp, M_80211_VAP);
 512 }
 513
 514 static int
 515 ipw_dma_alloc(struct ipw_softc *sc)
 516 {
 517         struct ipw_soft_bd *sbd;
 518         struct ipw_soft_hdr *shdr;
 519         struct ipw_soft_buf *sbuf;
 520         bus_addr_t physaddr;
 521         int error, i;
 522
 523         /*
 524          * Allocate parent DMA tag for subsequent allocations.
 525          */
 526         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 527             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 528             BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED,
 529             BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat);
 530         if (error != 0) {
 531                 device_printf(sc->sc_dev, "could not create parent DMA tag\n");
 532                 goto fail;
 533         }
 534
 535         /*
 536          * Allocate and map tx ring.
 537          */
 538         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 539             BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL,
 540             NULL, &sc->tbd_dmat);
 541         if (error != 0) {
 542                 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
 543                 goto fail;
 544         }
 545
 546         error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list,
 547             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map);
 548         if (error != 0) {
 549                 device_printf(sc->sc_dev,
 550                     "could not allocate tx ring DMA memory\n");
 551                 goto fail;
 552         }
 553
 554         error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list,
 555             IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0);
 556         if (error != 0) {
 557                 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n");
 558                 goto fail;
 559         }
 560
 561         /*
 562          * Allocate and map rx ring.
 563          */
 564         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 565             BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL,
 566             NULL, &sc->rbd_dmat);
 567         if (error != 0) {
 568                 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n");
 569                 goto fail;
 570         }
 571
 572         error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list,
 573             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map);
 574         if (error != 0) {
 575                 device_printf(sc->sc_dev,
 576                     "could not allocate rx ring DMA memory\n");
 577                 goto fail;
 578         }
 579
 580         error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list,
 581             IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0);
 582         if (error != 0) {
 583                 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n");
 584                 goto fail;
 585         }
 586
 587         /*
 588          * Allocate and map status ring.
 589          */
 590         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 591             BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0,
 592             NULL, NULL, &sc->status_dmat);
 593         if (error != 0) {
 594                 device_printf(sc->sc_dev,
 595                     "could not create status ring DMA tag\n");
 596                 goto fail;
 597         }
 598
 599         error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list,
 600             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map);
 601         if (error != 0) {
 602                 device_printf(sc->sc_dev,
 603                     "could not allocate status ring DMA memory\n");
 604                 goto fail;
 605         }
 606
 607         error = bus_dmamap_load(sc->status_dmat, sc->status_map,
 608             sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys,
 609             0);
 610         if (error != 0) {
 611                 device_printf(sc->sc_dev,
 612                     "could not map status ring DMA memory\n");
 613                 goto fail;
 614         }
 615
 616         /*
 617          * Allocate command DMA map.
 618          */
 619         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 620             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1,
 621             sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat);
 622         if (error != 0) {
 623                 device_printf(sc->sc_dev, "could not create command DMA tag\n");
 624                 goto fail;
 625         }
 626
 627         error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map);
 628         if (error != 0) {
 629                 device_printf(sc->sc_dev,
 630                     "could not create command DMA map\n");
 631                 goto fail;
 632         }
 633
 634         /*
 635          * Allocate headers DMA maps.
 636          */
 637         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 638             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1,
 639             sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat);
 640         if (error != 0) {
 641                 device_printf(sc->sc_dev, "could not create header DMA tag\n");
 642                 goto fail;
 643         }
 644
 645         SLIST_INIT(&sc->free_shdr);
 646         for (i = 0; i < IPW_NDATA; i++) {
 647                 shdr = &sc->shdr_list[i];
 648                 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map);
 649                 if (error != 0) {
 650                         device_printf(sc->sc_dev,
 651                             "could not create header DMA map\n");
 652                         goto fail;
 653                 }
 654                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
 655         }
 656
 657         /*
 658          * Allocate tx buffers DMA maps.
 659          */
 660         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 661             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0,
 662             NULL, NULL, &sc->txbuf_dmat);
 663         if (error != 0) {
 664                 device_printf(sc->sc_dev, "could not create tx DMA tag\n");
 665                 goto fail;
 666         }
 667
 668         SLIST_INIT(&sc->free_sbuf);
 669         for (i = 0; i < IPW_NDATA; i++) {
 670                 sbuf = &sc->tx_sbuf_list[i];
 671                 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map);
 672                 if (error != 0) {
 673                         device_printf(sc->sc_dev,
 674                             "could not create tx DMA map\n");
 675                         goto fail;
 676                 }
 677                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
 678         }
 679
 680         /*
 681          * Initialize tx ring.
 682          */
 683         for (i = 0; i < IPW_NTBD; i++) {
 684                 sbd = &sc->stbd_list[i];
 685                 sbd->bd = &sc->tbd_list[i];
 686                 sbd->type = IPW_SBD_TYPE_NOASSOC;
 687         }
 688
 689         /*
 690          * Pre-allocate rx buffers and DMA maps.
 691          */
 692         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 693             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
 694             NULL, &sc->rxbuf_dmat);
 695         if (error != 0) {
 696                 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
 697                 goto fail;
 698         }
 699
 700         for (i = 0; i < IPW_NRBD; i++) {
 701                 sbd = &sc->srbd_list[i];
 702                 sbuf = &sc->rx_sbuf_list[i];
 703                 sbd->bd = &sc->rbd_list[i];
 704
 705                 sbuf->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 706                 if (sbuf->m == NULL) {
 707                         device_printf(sc->sc_dev,
 708                             "could not allocate rx mbuf\n");
 709                         error = ENOMEM;
 710                         goto fail;
 711                 }
 712
 713                 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map);
 714                 if (error != 0) {
 715                         device_printf(sc->sc_dev,
 716                             "could not create rx DMA map\n");
 717                         goto fail;
 718                 }
 719
 720                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
 721                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
 722                     &physaddr, 0);
 723                 if (error != 0) {
 724                         device_printf(sc->sc_dev,
 725                             "could not map rx DMA memory\n");
 726                         goto fail;
 727                 }
 728
 729                 sbd->type = IPW_SBD_TYPE_DATA;
 730                 sbd->priv = sbuf;
 731                 sbd->bd->physaddr = htole32(physaddr);
 732                 sbd->bd->len = htole32(MCLBYTES);
 733         }
 734
 735         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
 736
 737         return 0;
 738
 739 fail:   ipw_release(sc);
 740         return error;
 741 }
 742
 743 static void
 744 ipw_release(struct ipw_softc *sc)
 745 {
 746         struct ipw_soft_buf *sbuf;
 747         int i;
 748
 749         if (sc->parent_dmat != NULL) {
 750                 bus_dma_tag_destroy(sc->parent_dmat);
 751         }
 752
 753         if (sc->tbd_dmat != NULL) {
 754                 if (sc->stbd_list != NULL) {
 755                         bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map);
 756                         bus_dmamem_free(sc->tbd_dmat, sc->tbd_list,
 757                             sc->tbd_map);
 758                 }
 759                 bus_dma_tag_destroy(sc->tbd_dmat);
 760         }
 761
 762         if (sc->rbd_dmat != NULL) {
 763                 if (sc->rbd_list != NULL) {
 764                         bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map);
 765                         bus_dmamem_free(sc->rbd_dmat, sc->rbd_list,
 766                             sc->rbd_map);
 767                 }
 768                 bus_dma_tag_destroy(sc->rbd_dmat);
 769         }
 770
 771         if (sc->status_dmat != NULL) {
 772                 if (sc->status_list != NULL) {
 773                         bus_dmamap_unload(sc->status_dmat, sc->status_map);
 774                         bus_dmamem_free(sc->status_dmat, sc->status_list,
 775                             sc->status_map);
 776                 }
 777                 bus_dma_tag_destroy(sc->status_dmat);
 778         }
 779
 780         for (i = 0; i < IPW_NTBD; i++)
 781                 ipw_release_sbd(sc, &sc->stbd_list[i]);
 782
 783         if (sc->cmd_dmat != NULL) {
 784                 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map);
 785                 bus_dma_tag_destroy(sc->cmd_dmat);
 786         }
 787
 788         if (sc->hdr_dmat != NULL) {
 789                 for (i = 0; i < IPW_NDATA; i++)
 790                         bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map);
 791                 bus_dma_tag_destroy(sc->hdr_dmat);
 792         }
 793
 794         if (sc->txbuf_dmat != NULL) {
 795                 for (i = 0; i < IPW_NDATA; i++) {
 796                         bus_dmamap_destroy(sc->txbuf_dmat,
 797                             sc->tx_sbuf_list[i].map);
 798                 }
 799                 bus_dma_tag_destroy(sc->txbuf_dmat);
 800         }
 801
 802         if (sc->rxbuf_dmat != NULL) {
 803                 for (i = 0; i < IPW_NRBD; i++) {
 804                         sbuf = &sc->rx_sbuf_list[i];
 805                         if (sbuf->m != NULL) {
 806                                 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map,
 807                                     BUS_DMASYNC_POSTREAD);
 808                                 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
 809                                 m_freem(sbuf->m);
 810                         }
 811                         bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map);
 812                 }
 813                 bus_dma_tag_destroy(sc->rxbuf_dmat);
 814         }
 815 }
 816
 817 static int
 818 ipw_shutdown(device_t dev)
 819 {
 820         struct ipw_softc *sc = device_get_softc(dev);
 821
 822         ipw_stop(sc);
 823
 824         return 0;
 825 }
 826
 827 static int
 828 ipw_suspend(device_t dev)
 829 {
 830         struct ipw_softc *sc = device_get_softc(dev);
 831         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
 832
 833         ieee80211_suspend_all(ic);
 834         return 0;
 835 }
 836
 837 static int
 838 ipw_resume(device_t dev)
 839 {
 840         struct ipw_softc *sc = device_get_softc(dev);
 841         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
 842
 843         pci_write_config(dev, 0x41, 0, 1);
 844
 845         ieee80211_resume_all(ic);
 846         return 0;
 847 }
 848
 849 static int
 850 ipw_cvtrate(int ipwrate)
 851 {
 852         switch (ipwrate) {
 853         case IPW_RATE_DS1:      return 2;
 854         case IPW_RATE_DS2:      return 4;
 855         case IPW_RATE_DS5:      return 11;
 856         case IPW_RATE_DS11:     return 22;
 857         }
 858         return 0;
 859 }
 860
 861 /*
 862  * The firmware automatically adapts the transmit speed. We report its current
 863  * value here.
 864  */
 865 static void
 866 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 867 {
 868         struct ieee80211vap *vap = ifp->if_softc;
 869         struct ieee80211com *ic = vap->iv_ic;
 870         struct ipw_softc *sc = ic->ic_ifp->if_softc;
 871
 872         /* read current transmission rate from adapter */
 873         vap->iv_bss->ni_txrate = ipw_cvtrate(
 874             ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf);
 875         ieee80211_media_status(ifp, imr);
 876 }
 877
 878 static int
 879 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 880 {
 881         struct ipw_vap *ivp = IPW_VAP(vap);
 882         struct ieee80211com *ic = vap->iv_ic;
 883         struct ifnet *ifp = ic->ic_ifp;
 884         struct ipw_softc *sc = ifp->if_softc;
 885         enum ieee80211_state ostate;
 886
 887         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
 888                 ieee80211_state_name[vap->iv_state],
 889                 ieee80211_state_name[nstate], sc->flags));
 890
 891         ostate = vap->iv_state;
 892         IEEE80211_UNLOCK(ic);
 893
 894         switch (nstate) {
 895         case IEEE80211_S_RUN:
 896                 if (ic->ic_opmode == IEEE80211_M_IBSS) {
 897                         /*
 898                          * XXX when joining an ibss network we are called
 899                          * with a SCAN -> RUN transition on scan complete.
 900                          * Use that to call ipw_assoc.  On completing the
 901                          * join we are then called again with an AUTH -> RUN
 902                          * transition and we want to do nothing.  This is
 903                          * all totally bogus and needs to be redone.
 904                          */
 905                         if (ostate == IEEE80211_S_SCAN)
 906                                 ipw_assoc(ic, vap);
 907                 }
 908                 break;
 909
 910         case IEEE80211_S_INIT:
 911                 if (sc->flags & IPW_FLAG_ASSOCIATED)
 912                         ipw_disassoc(ic, vap);
 913                 break;
 914
 915         case IEEE80211_S_AUTH:
 916                 /*
 917                  * Move to ASSOC state after the ipw_assoc() call.  Firmware
 918                  * takes care of authentication, after the call we'll receive
 919                  * only an assoc response which would otherwise be discared
 920                  * if we are still in AUTH state.
 921                  */
 922                 nstate = IEEE80211_S_ASSOC;
 923                 ipw_assoc(ic, vap);
 924                 break;
 925
 926         case IEEE80211_S_ASSOC:
 927                 /*
 928                  * If we are not transitioning from AUTH then resend the
 929                  * association request.
 930                  */
 931                 if (ostate != IEEE80211_S_AUTH)
 932                         ipw_assoc(ic, vap);
 933                 break;
 934
 935         default:
 936                 break;
 937         }
 938         IEEE80211_LOCK(ic);
 939         return ivp->newstate(vap, nstate, arg);
 940 }
 941
 942 /*
 943  * Read 16 bits at address 'addr' from the serial EEPROM.
 944  */
 945 static uint16_t
 946 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr)
 947 {
 948         uint32_t tmp;
 949         uint16_t val;
 950         int n;
 951
 952         /* clock C once before the first command */
 953         IPW_EEPROM_CTL(sc, 0);
 954         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 955         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 956         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 957
 958         /* write start bit (1) */
 959         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 960         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 961
 962         /* write READ opcode (10) */
 963         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 964         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 965         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 966         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 967
 968         /* write address A7-A0 */
 969         for (n = 7; n >= 0; n--) {
 970                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 971                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D));
 972                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 973                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C);
 974         }
 975
 976         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 977
 978         /* read data Q15-Q0 */
 979         val = 0;
 980         for (n = 15; n >= 0; n--) {
 981                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 982                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 983                 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL);
 984                 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n;
 985         }
 986
 987         IPW_EEPROM_CTL(sc, 0);
 988
 989         /* clear Chip Select and clock C */
 990         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 991         IPW_EEPROM_CTL(sc, 0);
 992         IPW_EEPROM_CTL(sc, IPW_EEPROM_C);
 993
 994         return le16toh(val);
 995 }
 996
 997 static void
 998 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
 999 {
1000         struct ipw_cmd *cmd;
1001
1002         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1003
1004         cmd = mtod(sbuf->m, struct ipw_cmd *);
1005
1006         DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n",
1007             ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type),
1008             le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len),
1009             le32toh(cmd->status)));
1010
1011         sc->flags &= ~IPW_FLAG_BUSY;
1012         wakeup(sc);
1013 }
1014
1015 static void
1016 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
1017 {
1018 #define IEEESTATE(vap)  ieee80211_state_name[vap->iv_state]
1019         struct ifnet *ifp = sc->sc_ifp;
1020         struct ieee80211com *ic = ifp->if_l2com;
1021         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1022         uint32_t state;
1023
1024         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1025
1026         state = le32toh(*mtod(sbuf->m, uint32_t *));
1027
1028         switch (state) {
1029         case IPW_STATE_ASSOCIATED:
1030                 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n",
1031                         IEEESTATE(vap), sc->flags));
1032                 /* XXX suppress state change in case the fw auto-associates */
1033                 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) {
1034                         DPRINTF(("Unexpected association (%s, flags 0x%x)\n",
1035                                 IEEESTATE(vap), sc->flags));
1036                         break;
1037                 }
1038                 sc->flags &= ~IPW_FLAG_ASSOCIATING;
1039                 sc->flags |= IPW_FLAG_ASSOCIATED;
1040                 break;
1041
1042         case IPW_STATE_SCANNING:
1043                 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n",
1044                         IEEESTATE(vap), sc->flags));
1045                 /*
1046                  * NB: Check driver state for association on assoc
1047                  * loss as the firmware will immediately start to
1048                  * scan and we would treat it as a beacon miss if
1049                  * we checked the 802.11 layer state.
1050                  */
1051                 if (sc->flags & IPW_FLAG_ASSOCIATED) {
1052                         IPW_UNLOCK(sc);
1053                         /* XXX probably need to issue disassoc to fw */
1054                         ieee80211_beacon_miss(ic);
1055                         IPW_LOCK(sc);
1056                 }
1057                 break;
1058
1059         case IPW_STATE_SCAN_COMPLETE:
1060                 /*
1061                  * XXX For some reason scan requests generate scan
1062                  * started + scan done events before any traffic is
1063                  * received (e.g. probe response frames).  We work
1064                  * around this by marking the HACK flag and skipping
1065                  * the first scan complete event.
1066                 */
1067                 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n",
1068                             IEEESTATE(vap), sc->flags));
1069                 if (sc->flags & IPW_FLAG_HACK) {
1070                         sc->flags &= ~IPW_FLAG_HACK;
1071                         break;
1072                 }
1073                 if (sc->flags & IPW_FLAG_SCANNING) {
1074                         IPW_UNLOCK(sc);
1075                         ieee80211_scan_done(vap);
1076                         IPW_LOCK(sc);
1077                         sc->flags &= ~IPW_FLAG_SCANNING;
1078                         sc->sc_scan_timer = 0;
1079                 }
1080                 break;
1081
1082         case IPW_STATE_ASSOCIATION_LOST:
1083                 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n",
1084                         IEEESTATE(vap), sc->flags));
1085                 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1086                 if (vap->iv_state == IEEE80211_S_RUN) {
1087                         IPW_UNLOCK(sc);
1088                         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1089                         IPW_LOCK(sc);
1090                 }
1091                 break;
1092
1093         case IPW_STATE_DISABLED:
1094                 /* XXX? is this right? */
1095                 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING |
1096                     IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1097                 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n",
1098                         IEEESTATE(vap), sc->flags));
1099                 break;
1100
1101         case IPW_STATE_RADIO_DISABLED:
1102                 device_printf(sc->sc_dev, "radio turned off\n");
1103                 ieee80211_notify_radio(ic, 0);
1104                 ipw_stop_locked(sc);
1105                 /* XXX start polling thread to detect radio on */
1106                 break;
1107
1108         default:
1109                 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n",
1110                         __func__, state, IEEESTATE(vap), sc->flags));
1111                 break;
1112         }
1113 #undef IEEESTATE
1114 }
1115
1116 /*
1117  * Set driver state for current channel.
1118  */
1119 static void
1120 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan)
1121 {
1122         struct ifnet *ifp = sc->sc_ifp;
1123         struct ieee80211com *ic = ifp->if_l2com;
1124
1125         ic->ic_curchan = chan;
1126         ieee80211_radiotap_chan_change(ic);
1127 }
1128
1129 /*
1130  * XXX: Hack to set the current channel to the value advertised in beacons or
1131  * probe responses. Only used during AP detection.
1132  */
1133 static void
1134 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m)
1135 {
1136         struct ifnet *ifp = sc->sc_ifp;
1137         struct ieee80211com *ic = ifp->if_l2com;
1138         struct ieee80211_channel *c;
1139         struct ieee80211_frame *wh;
1140         uint8_t subtype;
1141         uint8_t *frm, *efrm;
1142
1143         wh = mtod(m, struct ieee80211_frame *);
1144
1145         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
1146                 return;
1147
1148         subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1149
1150         if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1151             subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1152                 return;
1153
1154         /* XXX use ieee80211_parse_beacon */
1155         frm = (uint8_t *)(wh + 1);
1156         efrm = mtod(m, uint8_t *) + m->m_len;
1157
1158         frm += 12;      /* skip tstamp, bintval and capinfo fields */
1159         while (frm < efrm) {
1160                 if (*frm == IEEE80211_ELEMID_DSPARMS)
1161 #if IEEE80211_CHAN_MAX < 255
1162                 if (frm[2] <= IEEE80211_CHAN_MAX)
1163 #endif
1164                 {
1165                         DPRINTF(("Fixing channel to %d\n", frm[2]));
1166                         c = ieee80211_find_channel(ic,
1167                                 ieee80211_ieee2mhz(frm[2], 0),
1168                                 IEEE80211_CHAN_B);
1169                         if (c == NULL)
1170                                 c = &ic->ic_channels[0];
1171                         ipw_setcurchan(sc, c);
1172                 }
1173
1174                 frm += frm[1] + 2;
1175         }
1176 }
1177
1178 static void
1179 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status,
1180     struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf)
1181 {
1182         struct ifnet *ifp = sc->sc_ifp;
1183         struct ieee80211com *ic = ifp->if_l2com;
1184         struct mbuf *mnew, *m;
1185         struct ieee80211_node *ni;
1186         bus_addr_t physaddr;
1187         int error;
1188         int8_t rssi, nf;
1189
1190         DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len),
1191             status->rssi));
1192
1193         if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) ||
1194             le32toh(status->len) > MCLBYTES)
1195                 return;
1196
1197         /*
1198          * Try to allocate a new mbuf for this ring element and load it before
1199          * processing the current mbuf. If the ring element cannot be loaded,
1200          * drop the received packet and reuse the old mbuf. In the unlikely
1201          * case that the old mbuf can't be reloaded either, explicitly panic.
1202          */
1203         mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1204         if (mnew == NULL) {
1205                 ifp->if_ierrors++;
1206                 return;
1207         }
1208
1209         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1210         bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
1211
1212         error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *),
1213             MCLBYTES, ipw_dma_map_addr, &physaddr, 0);
1214         if (error != 0) {
1215                 m_freem(mnew);
1216
1217                 /* try to reload the old mbuf */
1218                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
1219                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
1220                     &physaddr, 0);
1221                 if (error != 0) {
1222                         /* very unlikely that it will fail... */
1223                         panic("%s: could not load old rx mbuf",
1224                             device_get_name(sc->sc_dev));
1225                 }
1226                 ifp->if_ierrors++;
1227                 return;
1228         }
1229
1230         /*
1231          * New mbuf successfully loaded, update Rx ring and continue
1232          * processing.
1233          */
1234         m = sbuf->m;
1235         sbuf->m = mnew;
1236         sbd->bd->physaddr = htole32(physaddr);
1237
1238         /* finalize mbuf */
1239         m->m_pkthdr.rcvif = ifp;
1240         m->m_pkthdr.len = m->m_len = le32toh(status->len);
1241
1242         rssi = status->rssi + IPW_RSSI_TO_DBM;
1243         nf = -95;
1244         if (ieee80211_radiotap_active(ic)) {
1245                 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap;
1246
1247                 tap->wr_flags = 0;
1248                 tap->wr_antsignal = rssi;
1249                 tap->wr_antnoise = nf;
1250         }
1251
1252         if (sc->flags & IPW_FLAG_SCANNING)
1253                 ipw_fix_channel(sc, m);
1254
1255         IPW_UNLOCK(sc);
1256         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1257         if (ni != NULL) {
1258                 (void) ieee80211_input(ni, m, rssi - nf, nf);
1259                 ieee80211_free_node(ni);
1260         } else
1261                 (void) ieee80211_input_all(ic, m, rssi - nf, nf);
1262         IPW_LOCK(sc);
1263
1264         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1265 }
1266
1267 static void
1268 ipw_rx_intr(struct ipw_softc *sc)
1269 {
1270         struct ipw_status *status;
1271         struct ipw_soft_bd *sbd;
1272         struct ipw_soft_buf *sbuf;
1273         uint32_t r, i;
1274
1275         if (!(sc->flags & IPW_FLAG_FW_INITED))
1276                 return;
1277
1278         r = CSR_READ_4(sc, IPW_CSR_RX_READ);
1279
1280         bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD);
1281
1282         for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) {
1283                 status = &sc->status_list[i];
1284                 sbd = &sc->srbd_list[i];
1285                 sbuf = sbd->priv;
1286
1287                 switch (le16toh(status->code) & 0xf) {
1288                 case IPW_STATUS_CODE_COMMAND:
1289                         ipw_rx_cmd_intr(sc, sbuf);
1290                         break;
1291
1292                 case IPW_STATUS_CODE_NEWSTATE:
1293                         ipw_rx_newstate_intr(sc, sbuf);
1294                         break;
1295
1296                 case IPW_STATUS_CODE_DATA_802_3:
1297                 case IPW_STATUS_CODE_DATA_802_11:
1298                         ipw_rx_data_intr(sc, status, sbd, sbuf);
1299                         break;
1300
1301                 case IPW_STATUS_CODE_NOTIFICATION:
1302                         DPRINTFN(2, ("notification status, len %u flags 0x%x\n",
1303                             le32toh(status->len), status->flags));
1304                         /* XXX maybe drive state machine AUTH->ASSOC? */
1305                         break;
1306
1307                 default:
1308                         device_printf(sc->sc_dev, "unexpected status code %u\n",
1309                             le16toh(status->code));
1310                 }
1311
1312                 /* firmware was killed, stop processing received frames */
1313                 if (!(sc->flags & IPW_FLAG_FW_INITED))
1314                         return;
1315
1316                 sbd->bd->flags = 0;
1317         }
1318
1319         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1320
1321         /* kick the firmware */
1322         sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1;
1323         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
1324 }
1325
1326 static void
1327 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd)
1328 {
1329         struct ipw_soft_hdr *shdr;
1330         struct ipw_soft_buf *sbuf;
1331
1332         switch (sbd->type) {
1333         case IPW_SBD_TYPE_COMMAND:
1334                 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map,
1335                     BUS_DMASYNC_POSTWRITE);
1336                 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map);
1337                 break;
1338
1339         case IPW_SBD_TYPE_HEADER:
1340                 shdr = sbd->priv;
1341                 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE);
1342                 bus_dmamap_unload(sc->hdr_dmat, shdr->map);
1343                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
1344                 break;
1345
1346         case IPW_SBD_TYPE_DATA:
1347                 sbuf = sbd->priv;
1348                 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map,
1349                     BUS_DMASYNC_POSTWRITE);
1350                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1351                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
1352
1353                 if (sbuf->m->m_flags & M_TXCB)
1354                         ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/);
1355                 m_freem(sbuf->m);
1356                 ieee80211_free_node(sbuf->ni);
1357
1358                 sc->sc_tx_timer = 0;
1359                 break;
1360         }
1361
1362         sbd->type = IPW_SBD_TYPE_NOASSOC;
1363 }
1364
1365 static void
1366 ipw_tx_intr(struct ipw_softc *sc)
1367 {
1368         struct ifnet *ifp = sc->sc_ifp;
1369         struct ipw_soft_bd *sbd;
1370         uint32_t r, i;
1371
1372         if (!(sc->flags & IPW_FLAG_FW_INITED))
1373                 return;
1374
1375         r = CSR_READ_4(sc, IPW_CSR_TX_READ);
1376
1377         for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) {
1378                 sbd = &sc->stbd_list[i];
1379
1380                 if (sbd->type == IPW_SBD_TYPE_DATA)
1381                         ifp->if_opackets++;
1382
1383                 ipw_release_sbd(sc, sbd);
1384                 sc->txfree++;
1385         }
1386
1387         /* remember what the firmware has processed */
1388         sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1;
1389
1390         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1391         ipw_start_locked(ifp);
1392 }
1393
1394 static void
1395 ipw_fatal_error_intr(struct ipw_softc *sc)
1396 {
1397         struct ifnet *ifp = sc->sc_ifp;
1398         struct ieee80211com *ic = ifp->if_l2com;
1399         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1400
1401         device_printf(sc->sc_dev, "firmware error\n");
1402         if (vap != NULL) {
1403                 IPW_UNLOCK(sc);
1404                 ieee80211_cancel_scan(vap);
1405                 IPW_LOCK(sc);
1406         }
1407         ieee80211_runtask(ic, &sc->sc_init_task);
1408 }
1409
1410 static void
1411 ipw_intr(void *arg)
1412 {
1413         struct ipw_softc *sc = arg;
1414         uint32_t r;
1415
1416         IPW_LOCK(sc);
1417
1418         r = CSR_READ_4(sc, IPW_CSR_INTR);
1419         if (r == 0 || r == 0xffffffff)
1420                 goto done;
1421
1422         /* disable interrupts */
1423         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1424
1425         /* acknowledge all interrupts */
1426         CSR_WRITE_4(sc, IPW_CSR_INTR, r);
1427
1428         if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) {
1429                 ipw_fatal_error_intr(sc);
1430                 goto done;
1431         }
1432
1433         if (r & IPW_INTR_FW_INIT_DONE)
1434                 wakeup(sc);
1435
1436         if (r & IPW_INTR_RX_TRANSFER)
1437                 ipw_rx_intr(sc);
1438
1439         if (r & IPW_INTR_TX_TRANSFER)
1440                 ipw_tx_intr(sc);
1441
1442         /* re-enable interrupts */
1443         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1444 done:
1445         IPW_UNLOCK(sc);
1446 }
1447
1448 static void
1449 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1450 {
1451         if (error != 0)
1452                 return;
1453
1454         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1455
1456         *(bus_addr_t *)arg = segs[0].ds_addr;
1457 }
1458
1459 static const char *
1460 ipw_cmdname(int cmd)
1461 {
1462 #define N(a)    (sizeof(a) / sizeof(a[0]))
1463         static const struct {
1464                 int     cmd;
1465                 const char *name;
1466         } cmds[] = {
1467                 { IPW_CMD_ADD_MULTICAST,        "ADD_MULTICAST" },
1468                 { IPW_CMD_BROADCAST_SCAN,       "BROADCAST_SCAN" },
1469                 { IPW_CMD_DISABLE,              "DISABLE" },
1470                 { IPW_CMD_DISABLE_PHY,          "DISABLE_PHY" },
1471                 { IPW_CMD_ENABLE,               "ENABLE" },
1472                 { IPW_CMD_PREPARE_POWER_DOWN,   "PREPARE_POWER_DOWN" },
1473                 { IPW_CMD_SET_BASIC_TX_RATES,   "SET_BASIC_TX_RATES" },
1474                 { IPW_CMD_SET_BEACON_INTERVAL,  "SET_BEACON_INTERVAL" },
1475                 { IPW_CMD_SET_CHANNEL,          "SET_CHANNEL" },
1476                 { IPW_CMD_SET_CONFIGURATION,    "SET_CONFIGURATION" },
1477                 { IPW_CMD_SET_DESIRED_BSSID,    "SET_DESIRED_BSSID" },
1478                 { IPW_CMD_SET_ESSID,            "SET_ESSID" },
1479                 { IPW_CMD_SET_FRAG_THRESHOLD,   "SET_FRAG_THRESHOLD" },
1480                 { IPW_CMD_SET_MAC_ADDRESS,      "SET_MAC_ADDRESS" },
1481                 { IPW_CMD_SET_MANDATORY_BSSID,  "SET_MANDATORY_BSSID" },
1482                 { IPW_CMD_SET_MODE,             "SET_MODE" },
1483                 { IPW_CMD_SET_MSDU_TX_RATES,    "SET_MSDU_TX_RATES" },
1484                 { IPW_CMD_SET_POWER_MODE,       "SET_POWER_MODE" },
1485                 { IPW_CMD_SET_RTS_THRESHOLD,    "SET_RTS_THRESHOLD" },
1486                 { IPW_CMD_SET_SCAN_OPTIONS,     "SET_SCAN_OPTIONS" },
1487                 { IPW_CMD_SET_SECURITY_INFO,    "SET_SECURITY_INFO" },
1488                 { IPW_CMD_SET_TX_POWER_INDEX,   "SET_TX_POWER_INDEX" },
1489                 { IPW_CMD_SET_TX_RATES,         "SET_TX_RATES" },
1490                 { IPW_CMD_SET_WEP_FLAGS,        "SET_WEP_FLAGS" },
1491                 { IPW_CMD_SET_WEP_KEY,          "SET_WEP_KEY" },
1492                 { IPW_CMD_SET_WEP_KEY_INDEX,    "SET_WEP_KEY_INDEX" },
1493                 { IPW_CMD_SET_WPA_IE,           "SET_WPA_IE" },
1494
1495         };
1496         static char buf[12];
1497         int i;
1498
1499         for (i = 0; i < N(cmds); i++)
1500                 if (cmds[i].cmd == cmd)
1501                         return cmds[i].name;
1502         snprintf(buf, sizeof(buf), "%u", cmd);
1503         return buf;
1504 #undef N
1505 }
1506
1507 /*
1508  * Send a command to the firmware and wait for the acknowledgement.
1509  */
1510 static int
1511 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len)
1512 {
1513         struct ipw_soft_bd *sbd;
1514         bus_addr_t physaddr;
1515         int error;
1516
1517         IPW_LOCK_ASSERT(sc);
1518
1519         if (sc->flags & IPW_FLAG_BUSY) {
1520                 device_printf(sc->sc_dev, "%s: %s not sent, busy\n",
1521                         __func__, ipw_cmdname(type));
1522                 return EAGAIN;
1523         }
1524         sc->flags |= IPW_FLAG_BUSY;
1525
1526         sbd = &sc->stbd_list[sc->txcur];
1527
1528         error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd,
1529             sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0);
1530         if (error != 0) {
1531                 device_printf(sc->sc_dev, "could not map command DMA memory\n");
1532                 sc->flags &= ~IPW_FLAG_BUSY;
1533                 return error;
1534         }
1535
1536         sc->cmd.type = htole32(type);
1537         sc->cmd.subtype = 0;
1538         sc->cmd.len = htole32(len);
1539         sc->cmd.seq = 0;
1540         memcpy(sc->cmd.data, data, len);
1541
1542         sbd->type = IPW_SBD_TYPE_COMMAND;
1543         sbd->bd->physaddr = htole32(physaddr);
1544         sbd->bd->len = htole32(sizeof (struct ipw_cmd));
1545         sbd->bd->nfrag = 1;
1546         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND |
1547             IPW_BD_FLAG_TX_LAST_FRAGMENT;
1548
1549         bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE);
1550         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1551
1552 #ifdef IPW_DEBUG
1553         if (ipw_debug >= 4) {
1554                 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type,
1555                     0, 0, len);
1556                 /* Print the data buffer in the higher debug level */
1557                 if (ipw_debug >= 9 && len > 0) {
1558                         printf(" data: 0x");
1559                         for (int i = 1; i <= len; i++)
1560                                 printf("%1D", (u_char *)data + len - i, "");
1561                 }
1562                 printf("\n");
1563         }
1564 #endif
1565
1566         /* kick firmware */
1567         sc->txfree--;
1568         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1569         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1570
1571         /* wait at most one second for command to complete */
1572         error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz);
1573         if (error != 0) {
1574                 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n",
1575                     __func__, ipw_cmdname(type), error);
1576                 sc->flags &= ~IPW_FLAG_BUSY;
1577                 return (error);
1578         }
1579         return (0);
1580 }
1581
1582 static int
1583 ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni)
1584 {
1585         struct ipw_softc *sc = ifp->if_softc;
1586         struct ieee80211com *ic = ifp->if_l2com;
1587         struct ieee80211vap *vap = ni->ni_vap;
1588         struct ieee80211_frame *wh;
1589         struct ipw_soft_bd *sbd;
1590         struct ipw_soft_hdr *shdr;
1591         struct ipw_soft_buf *sbuf;
1592         struct ieee80211_key *k;
1593         struct mbuf *mnew;
1594         bus_dma_segment_t segs[IPW_MAX_NSEG];
1595         bus_addr_t physaddr;
1596         int nsegs, error, i;
1597
1598         wh = mtod(m0, struct ieee80211_frame *);
1599
1600         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1601                 k = ieee80211_crypto_encap(ni, m0);
1602                 if (k == NULL) {
1603                         m_freem(m0);
1604                         return ENOBUFS;
1605                 }
1606                 /* packet header may have moved, reset our local pointer */
1607                 wh = mtod(m0, struct ieee80211_frame *);
1608         }
1609
1610         if (ieee80211_radiotap_active_vap(vap)) {
1611                 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap;
1612
1613                 tap->wt_flags = 0;
1614
1615                 ieee80211_radiotap_tx(vap, m0);
1616         }
1617
1618         shdr = SLIST_FIRST(&sc->free_shdr);
1619         sbuf = SLIST_FIRST(&sc->free_sbuf);
1620         KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool"));
1621
1622         shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND);
1623         shdr->hdr.subtype = 0;
1624         shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) ? 1 : 0;
1625         shdr->hdr.encrypt = 0;
1626         shdr->hdr.keyidx = 0;
1627         shdr->hdr.keysz = 0;
1628         shdr->hdr.fragmentsz = 0;
1629         IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2);
1630         if (ic->ic_opmode == IEEE80211_M_STA)
1631                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3);
1632         else
1633                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1);
1634
1635         /* trim IEEE802.11 header */
1636         m_adj(m0, sizeof (struct ieee80211_frame));
1637
1638         error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs,
1639             &nsegs, 0);
1640         if (error != 0 && error != EFBIG) {
1641                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1642                     error);
1643                 m_freem(m0);
1644                 return error;
1645         }
1646         if (error != 0) {
1647                 mnew = m_defrag(m0, M_NOWAIT);
1648                 if (mnew == NULL) {
1649                         device_printf(sc->sc_dev,
1650                             "could not defragment mbuf\n");
1651                         m_freem(m0);
1652                         return ENOBUFS;
1653                 }
1654                 m0 = mnew;
1655
1656                 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0,
1657                     segs, &nsegs, 0);
1658                 if (error != 0) {
1659                         device_printf(sc->sc_dev,
1660                             "could not map mbuf (error %d)\n", error);
1661                         m_freem(m0);
1662                         return error;
1663                 }
1664         }
1665
1666         error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr,
1667             sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0);
1668         if (error != 0) {
1669                 device_printf(sc->sc_dev, "could not map header DMA memory\n");
1670                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1671                 m_freem(m0);
1672                 return error;
1673         }
1674
1675         SLIST_REMOVE_HEAD(&sc->free_sbuf, next);
1676         SLIST_REMOVE_HEAD(&sc->free_shdr, next);
1677
1678         sbd = &sc->stbd_list[sc->txcur];
1679         sbd->type = IPW_SBD_TYPE_HEADER;
1680         sbd->priv = shdr;
1681         sbd->bd->physaddr = htole32(physaddr);
1682         sbd->bd->len = htole32(sizeof (struct ipw_hdr));
1683         sbd->bd->nfrag = 1 + nsegs;
1684         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 |
1685             IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1686
1687         DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n",
1688             shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted,
1689             shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr,
1690             ":"));
1691
1692         sc->txfree--;
1693         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1694
1695         sbuf->m = m0;
1696         sbuf->ni = ni;
1697
1698         for (i = 0; i < nsegs; i++) {
1699                 sbd = &sc->stbd_list[sc->txcur];
1700
1701                 sbd->bd->physaddr = htole32(segs[i].ds_addr);
1702                 sbd->bd->len = htole32(segs[i].ds_len);
1703                 sbd->bd->nfrag = 0;
1704                 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3;
1705                 if (i == nsegs - 1) {
1706                         sbd->type = IPW_SBD_TYPE_DATA;
1707                         sbd->priv = sbuf;
1708                         sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT;
1709                 } else {
1710                         sbd->type = IPW_SBD_TYPE_NOASSOC;
1711                         sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1712                 }
1713
1714                 DPRINTFN(5, ("sending fragment (%d)\n", i));
1715
1716                 sc->txfree--;
1717                 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1718         }
1719
1720         bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE);
1721         bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE);
1722         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1723
1724         /* kick firmware */
1725         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1726
1727         return 0;
1728 }
1729
1730 static int
1731 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1732         const struct ieee80211_bpf_params *params)
1733 {
1734         /* no support; just discard */
1735         m_freem(m);
1736         ieee80211_free_node(ni);
1737         return 0;
1738 }
1739
1740 static void
1741 ipw_start(struct ifnet *ifp)
1742 {
1743         struct ipw_softc *sc = ifp->if_softc;
1744
1745         IPW_LOCK(sc);
1746         ipw_start_locked(ifp);
1747         IPW_UNLOCK(sc);
1748 }
1749
1750 static void
1751 ipw_start_locked(struct ifnet *ifp)
1752 {
1753         struct ipw_softc *sc = ifp->if_softc;
1754         struct ieee80211_node *ni;
1755         struct mbuf *m;
1756
1757         IPW_LOCK_ASSERT(sc);
1758
1759         for (;;) {
1760                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1761                 if (m == NULL)
1762                         break;
1763                 if (sc->txfree < 1 + IPW_MAX_NSEG) {
1764                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
1765                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1766                         break;
1767                 }
1768                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1769                 if (ipw_tx_start(ifp, m, ni) != 0) {
1770                         ieee80211_free_node(ni);
1771                         ifp->if_oerrors++;
1772                         break;
1773                 }
1774                 /* start watchdog timer */
1775                 sc->sc_tx_timer = 5;
1776         }
1777 }
1778
1779 static void
1780 ipw_watchdog(void *arg)
1781 {
1782         struct ipw_softc *sc = arg;
1783         struct ifnet *ifp = sc->sc_ifp;
1784         struct ieee80211com *ic = ifp->if_l2com;
1785
1786         IPW_LOCK_ASSERT(sc);
1787
1788         if (sc->sc_tx_timer > 0) {
1789                 if (--sc->sc_tx_timer == 0) {
1790                         if_printf(ifp, "device timeout\n");
1791                         ifp->if_oerrors++;
1792                         taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1793                 }
1794         }
1795         if (sc->sc_scan_timer > 0) {
1796                 if (--sc->sc_scan_timer == 0) {
1797                         DPRINTFN(3, ("Scan timeout\n"));
1798                         /* End the scan */
1799                         if (sc->flags & IPW_FLAG_SCANNING) {
1800                                 IPW_UNLOCK(sc);
1801                                 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps));
1802                                 IPW_LOCK(sc);
1803                                 sc->flags &= ~IPW_FLAG_SCANNING;
1804                         }
1805                 }
1806         }
1807         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1808                 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
1809 }
1810
1811 static int
1812 ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1813 {
1814         struct ipw_softc *sc = ifp->if_softc;
1815         struct ieee80211com *ic = ifp->if_l2com;
1816         struct ifreq *ifr = (struct ifreq *) data;
1817         int error = 0, startall = 0;
1818
1819         switch (cmd) {
1820         case SIOCSIFFLAGS:
1821                 IPW_LOCK(sc);
1822                 if (ifp->if_flags & IFF_UP) {
1823                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1824                                 ipw_init_locked(sc);
1825                                 startall = 1;
1826                         }
1827                 } else {
1828                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1829                                 ipw_stop_locked(sc);
1830                 }
1831                 IPW_UNLOCK(sc);
1832                 if (startall)
1833                         ieee80211_start_all(ic);
1834                 break;
1835         case SIOCGIFMEDIA:
1836                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1837                 break;
1838         case SIOCGIFADDR:
1839                 error = ether_ioctl(ifp, cmd, data);
1840                 break;
1841         default:
1842                 error = EINVAL;
1843                 break;
1844         }
1845         return error;
1846 }
1847
1848 static void
1849 ipw_stop_master(struct ipw_softc *sc)
1850 {
1851         uint32_t tmp;
1852         int ntries;
1853
1854         /* disable interrupts */
1855         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1856
1857         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER);
1858         for (ntries = 0; ntries < 50; ntries++) {
1859                 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED)
1860                         break;
1861                 DELAY(10);
1862         }
1863         if (ntries == 50)
1864                 device_printf(sc->sc_dev, "timeout waiting for master\n");
1865
1866         tmp = CSR_READ_4(sc, IPW_CSR_RST);
1867         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET);
1868
1869         /* Clear all flags except the following */
1870         sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH;
1871 }
1872
1873 static int
1874 ipw_reset(struct ipw_softc *sc)
1875 {
1876         uint32_t tmp;
1877         int ntries;
1878
1879         ipw_stop_master(sc);
1880
1881         /* move adapter to D0 state */
1882         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1883         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1884
1885         /* wait for clock stabilization */
1886         for (ntries = 0; ntries < 1000; ntries++) {
1887                 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY)
1888                         break;
1889                 DELAY(200);
1890         }
1891         if (ntries == 1000)
1892                 return EIO;
1893
1894         tmp =  CSR_READ_4(sc, IPW_CSR_RST);
1895         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET);
1896
1897         DELAY(10);
1898
1899         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1900         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1901
1902         return 0;
1903 }
1904
1905 static int
1906 ipw_waitfordisable(struct ipw_softc *sc, int waitfor)
1907 {
1908         int ms = hz < 1000 ? 1 : hz/10;
1909         int i, error;
1910
1911         for (i = 0; i < 100; i++) {
1912                 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor)
1913                         return 0;
1914                 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms);
1915                 if (error == 0 || error != EWOULDBLOCK)
1916                         return 0;
1917         }
1918         DPRINTF(("%s: timeout waiting for %s\n",
1919                 __func__, waitfor ? "disable" : "enable"));
1920         return ETIMEDOUT;
1921 }
1922
1923 static int
1924 ipw_enable(struct ipw_softc *sc)
1925 {
1926         int error;
1927
1928         if ((sc->flags & IPW_FLAG_ENABLED) == 0) {
1929                 DPRINTF(("Enable adapter\n"));
1930                 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
1931                 if (error != 0)
1932                         return error;
1933                 error = ipw_waitfordisable(sc, 0);
1934                 if (error != 0)
1935                         return error;
1936                 sc->flags |= IPW_FLAG_ENABLED;
1937         }
1938         return 0;
1939 }
1940
1941 static int
1942 ipw_disable(struct ipw_softc *sc)
1943 {
1944         int error;
1945
1946         if (sc->flags & IPW_FLAG_ENABLED) {
1947                 DPRINTF(("Disable adapter\n"));
1948                 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0);
1949                 if (error != 0)
1950                         return error;
1951                 error = ipw_waitfordisable(sc, 1);
1952                 if (error != 0)
1953                         return error;
1954                 sc->flags &= ~IPW_FLAG_ENABLED;
1955         }
1956         return 0;
1957 }
1958
1959 /*
1960  * Upload the microcode to the device.
1961  */
1962 static int
1963 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size)
1964 {
1965         int ntries;
1966
1967         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
1968         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1969
1970         MEM_WRITE_2(sc, 0x220000, 0x0703);
1971         MEM_WRITE_2(sc, 0x220000, 0x0707);
1972
1973         MEM_WRITE_1(sc, 0x210014, 0x72);
1974         MEM_WRITE_1(sc, 0x210014, 0x72);
1975
1976         MEM_WRITE_1(sc, 0x210000, 0x40);
1977         MEM_WRITE_1(sc, 0x210000, 0x00);
1978         MEM_WRITE_1(sc, 0x210000, 0x40);
1979
1980         MEM_WRITE_MULTI_1(sc, 0x210010, uc, size);
1981
1982         MEM_WRITE_1(sc, 0x210000, 0x00);
1983         MEM_WRITE_1(sc, 0x210000, 0x00);
1984         MEM_WRITE_1(sc, 0x210000, 0x80);
1985
1986         MEM_WRITE_2(sc, 0x220000, 0x0703);
1987         MEM_WRITE_2(sc, 0x220000, 0x0707);
1988
1989         MEM_WRITE_1(sc, 0x210014, 0x72);
1990         MEM_WRITE_1(sc, 0x210014, 0x72);
1991
1992         MEM_WRITE_1(sc, 0x210000, 0x00);
1993         MEM_WRITE_1(sc, 0x210000, 0x80);
1994
1995         for (ntries = 0; ntries < 10; ntries++) {
1996                 if (MEM_READ_1(sc, 0x210000) & 1)
1997                         break;
1998                 DELAY(10);
1999         }
2000         if (ntries == 10) {
2001                 device_printf(sc->sc_dev,
2002                     "timeout waiting for ucode to initialize\n");
2003                 return EIO;
2004         }
2005
2006         MEM_WRITE_4(sc, 0x3000e0, 0);
2007
2008         return 0;
2009 }
2010
2011 /* set of macros to handle unaligned little endian data in firmware image */
2012 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2013 #define GETLE16(p) ((p)[0] | (p)[1] << 8)
2014 static int
2015 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size)
2016 {
2017         const uint8_t *p, *end;
2018         uint32_t tmp, dst;
2019         uint16_t len;
2020         int error;
2021
2022         p = fw;
2023         end = fw + size;
2024         while (p < end) {
2025                 dst = GETLE32(p); p += 4;
2026                 len = GETLE16(p); p += 2;
2027
2028                 ipw_write_mem_1(sc, dst, p, len);
2029                 p += len;
2030         }
2031
2032         CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK |
2033             IPW_IO_LED_OFF);
2034
2035         /* enable interrupts */
2036         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
2037
2038         /* kick the firmware */
2039         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
2040
2041         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
2042         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY);
2043
2044         /* wait at most one second for firmware initialization to complete */
2045         if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) {
2046                 device_printf(sc->sc_dev, "timeout waiting for firmware "
2047                     "initialization to complete\n");
2048                 return error;
2049         }
2050
2051         tmp = CSR_READ_4(sc, IPW_CSR_IO);
2052         CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK |
2053             IPW_IO_GPIO3_MASK);
2054
2055         return 0;
2056 }
2057
2058 static int
2059 ipw_setwepkeys(struct ipw_softc *sc)
2060 {
2061         struct ifnet *ifp = sc->sc_ifp;
2062         struct ieee80211com *ic = ifp->if_l2com;
2063         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2064         struct ipw_wep_key wepkey;
2065         struct ieee80211_key *wk;
2066         int error, i;
2067
2068         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2069                 wk = &vap->iv_nw_keys[i];
2070
2071                 if (wk->wk_cipher == NULL ||
2072                     wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP)
2073                         continue;
2074
2075                 wepkey.idx = i;
2076                 wepkey.len = wk->wk_keylen;
2077                 memset(wepkey.key, 0, sizeof wepkey.key);
2078                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2079                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2080                     wepkey.len));
2081                 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey,
2082                     sizeof wepkey);
2083                 if (error != 0)
2084                         return error;
2085         }
2086         return 0;
2087 }
2088
2089 static int
2090 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen)
2091 {
2092         struct ipw_wpa_ie wpaie;
2093
2094         memset(&wpaie, 0, sizeof(wpaie));
2095         wpaie.len = htole32(ielen);
2096         /* XXX verify length */
2097         memcpy(&wpaie.ie, ie, ielen);
2098         DPRINTF(("Setting WPA IE\n"));
2099         return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie));
2100 }
2101
2102 static int
2103 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid)
2104 {
2105         static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
2106
2107         if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) {
2108                 DPRINTF(("Setting mandatory BSSID to null\n"));
2109                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0);
2110         } else {
2111                 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":"));
2112                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID,
2113                         bssid, IEEE80211_ADDR_LEN);
2114         }
2115 }
2116
2117 static int
2118 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen)
2119 {
2120         if (ssidlen == 0) {
2121                 /*
2122                  * A bug in the firmware breaks the ``don't associate''
2123                  * bit in the scan options command.  To compensate for
2124                  * this install a bogus ssid when no ssid is specified
2125                  * so the firmware won't try to associate.
2126                  */
2127                 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n"));
2128                 return ipw_cmd(sc, IPW_CMD_SET_ESSID,
2129                         "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27"
2130                         "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31"
2131                         "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b"
2132                         "\x3c\x3d", IEEE80211_NWID_LEN);
2133         } else {
2134 #ifdef IPW_DEBUG
2135                 if (ipw_debug > 0) {
2136                         printf("Setting ESSID to ");
2137                         ieee80211_print_essid(ssid, ssidlen);
2138                         printf("\n");
2139                 }
2140 #endif
2141                 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen);
2142         }
2143 }
2144
2145 static int
2146 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags)
2147 {
2148         struct ipw_scan_options opts;
2149
2150         DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags));
2151         opts.channels = htole32(chanmask);
2152         opts.flags = htole32(flags);
2153         return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts));
2154 }
2155
2156 static int
2157 ipw_scan(struct ipw_softc *sc)
2158 {
2159         uint32_t params;
2160         int error;
2161
2162         DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags));
2163
2164         if (sc->flags & IPW_FLAG_SCANNING)
2165                 return (EBUSY);
2166         sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK;
2167
2168         /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */
2169         error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE);
2170         if (error != 0)
2171                 goto done;
2172
2173         /*
2174          * Setup null/bogus ssid so firmware doesn't use any previous
2175          * ssid to try and associate.  This is because the ``don't
2176          * associate'' option bit is broken (sigh).
2177          */
2178         error = ipw_setssid(sc, NULL, 0);
2179         if (error != 0)
2180                 goto done;
2181
2182         /*
2183          * NB: the adapter may be disabled on association lost;
2184          *     if so just re-enable it to kick off scanning.
2185          */
2186         DPRINTF(("Starting scan\n"));
2187         sc->sc_scan_timer = 3;
2188         if (sc->flags & IPW_FLAG_ENABLED) {
2189                 params = 0;                             /* XXX? */
2190                 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN,
2191                                 &params, sizeof(params));
2192         } else
2193                 error = ipw_enable(sc);
2194 done:
2195         if (error != 0) {
2196                 DPRINTF(("Scan failed\n"));
2197                 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK);
2198         }
2199         return (error);
2200 }
2201
2202 static int
2203 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan)
2204 {
2205         struct ifnet *ifp = sc->sc_ifp;
2206         struct ieee80211com *ic = ifp->if_l2com;
2207         uint32_t data;
2208         int error;
2209
2210         data = htole32(ieee80211_chan2ieee(ic, chan));
2211         DPRINTF(("Setting channel to %u\n", le32toh(data)));
2212         error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data);
2213         if (error == 0)
2214                 ipw_setcurchan(sc, chan);
2215         return error;
2216 }
2217
2218 static void
2219 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2220 {
2221         struct ifnet *ifp = vap->iv_ic->ic_ifp;
2222         struct ipw_softc *sc = ifp->if_softc;
2223         struct ieee80211_node *ni = vap->iv_bss;
2224         struct ipw_security security;
2225         uint32_t data;
2226         int error;
2227
2228         IPW_LOCK(sc);
2229         error = ipw_disable(sc);
2230         if (error != 0)
2231                 goto done;
2232
2233         memset(&security, 0, sizeof security);
2234         security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ?
2235             IPW_AUTH_SHARED : IPW_AUTH_OPEN;
2236         security.ciphers = htole32(IPW_CIPHER_NONE);
2237         DPRINTF(("Setting authmode to %u\n", security.authmode));
2238         error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security,
2239             sizeof security);
2240         if (error != 0)
2241                 goto done;
2242
2243         data = htole32(vap->iv_rtsthreshold);
2244         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2245         error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2246         if (error != 0)
2247                 goto done;
2248
2249         data = htole32(vap->iv_fragthreshold);
2250         DPRINTF(("Setting frag threshold to %u\n", le32toh(data)));
2251         error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2252         if (error != 0)
2253                 goto done;
2254
2255         if (vap->iv_flags & IEEE80211_F_PRIVACY) {
2256                 error = ipw_setwepkeys(sc);
2257                 if (error != 0)
2258                         goto done;
2259
2260                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) {
2261                         data = htole32(vap->iv_def_txkey);
2262                         DPRINTF(("Setting wep tx key index to %u\n",
2263                                 le32toh(data)));
2264                         error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data,
2265                             sizeof data);
2266                         if (error != 0)
2267                                 goto done;
2268                 }
2269         }
2270
2271         data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0);
2272         DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data)));
2273         error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data);
2274         if (error != 0)
2275                 goto done;
2276
2277         error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen);
2278         if (error != 0)
2279                 goto done;
2280
2281         error = ipw_setbssid(sc, ni->ni_bssid);
2282         if (error != 0)
2283                 goto done;
2284
2285         if (vap->iv_appie_wpa != NULL) {
2286                 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2287                 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len);
2288                 if (error != 0)
2289                         goto done;
2290         }
2291         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2292                 error = ipw_setchannel(sc, ni->ni_chan);
2293                 if (error != 0)
2294                         goto done;
2295         }
2296
2297         /* lock scan to ap's channel and enable associate */
2298         error = ipw_setscanopts(sc,
2299             1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0);
2300         if (error != 0)
2301                 goto done;
2302
2303         error = ipw_enable(sc);         /* finally, enable adapter */
2304         if (error == 0)
2305                 sc->flags |= IPW_FLAG_ASSOCIATING;
2306 done:
2307         IPW_UNLOCK(sc);
2308 }
2309
2310 static void
2311 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2312 {
2313         struct ifnet *ifp = vap->iv_ic->ic_ifp;
2314         struct ieee80211_node *ni = vap->iv_bss;
2315         struct ipw_softc *sc = ifp->if_softc;
2316
2317         IPW_LOCK(sc);
2318         DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":"));
2319         /*
2320          * NB: don't try to do this if ipw_stop_master has
2321          *     shutdown the firmware and disabled interrupts.
2322          */
2323         if (sc->flags & IPW_FLAG_FW_INITED) {
2324                 sc->flags &= ~IPW_FLAG_ASSOCIATED;
2325                 /*
2326                  * NB: firmware currently ignores bssid parameter, but
2327                  *     supply it in case this changes (follow linux driver).
2328                  */
2329                 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE,
2330                         ni->ni_bssid, IEEE80211_ADDR_LEN);
2331         }
2332         IPW_UNLOCK(sc);
2333 }
2334
2335 /*
2336  * Handler for sc_init_task.  This is a simple wrapper around ipw_init().
2337  * It is called on firmware panics or on watchdog timeouts.
2338  */
2339 static void
2340 ipw_init_task(void *context, int pending)
2341 {
2342         ipw_init(context);
2343 }
2344
2345 static void
2346 ipw_init(void *priv)
2347 {
2348         struct ipw_softc *sc = priv;
2349         struct ifnet *ifp = sc->sc_ifp;
2350         struct ieee80211com *ic = ifp->if_l2com;
2351
2352         IPW_LOCK(sc);
2353         ipw_init_locked(sc);
2354         IPW_UNLOCK(sc);
2355
2356         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2357                 ieee80211_start_all(ic);                /* start all vap's */
2358 }
2359
2360 static void
2361 ipw_init_locked(struct ipw_softc *sc)
2362 {
2363         struct ifnet *ifp = sc->sc_ifp;
2364         struct ieee80211com *ic = ifp->if_l2com;
2365         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2366         const struct firmware *fp;
2367         const struct ipw_firmware_hdr *hdr;
2368         const char *fw;
2369
2370         IPW_LOCK_ASSERT(sc);
2371
2372         DPRINTF(("%s: state %s flags 0x%x\n", __func__,
2373                 ieee80211_state_name[vap->iv_state], sc->flags));
2374
2375         /*
2376          * Avoid re-entrant calls.  We need to release the mutex in ipw_init()
2377          * when loading the firmware and we don't want to be called during this
2378          * operation.
2379          */
2380         if (sc->flags & IPW_FLAG_INIT_LOCKED)
2381                 return;
2382         sc->flags |= IPW_FLAG_INIT_LOCKED;
2383
2384         ipw_stop_locked(sc);
2385
2386         if (ipw_reset(sc) != 0) {
2387                 device_printf(sc->sc_dev, "could not reset adapter\n");
2388                 goto fail;
2389         }
2390
2391         if (sc->sc_firmware == NULL) {
2392                 device_printf(sc->sc_dev, "no firmware\n");
2393                 goto fail;
2394         }
2395         /* NB: consistency already checked on load */
2396         fp = sc->sc_firmware;
2397         hdr = (const struct ipw_firmware_hdr *)fp->data;
2398
2399         DPRINTF(("Loading firmware image '%s'\n", fp->name));
2400         fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz);
2401         if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) {
2402                 device_printf(sc->sc_dev, "could not load microcode\n");
2403                 goto fail;
2404         }
2405
2406         ipw_stop_master(sc);
2407
2408         /*
2409          * Setup tx, rx and status rings.
2410          */
2411         sc->txold = IPW_NTBD - 1;
2412         sc->txcur = 0;
2413         sc->txfree = IPW_NTBD - 2;
2414         sc->rxcur = IPW_NRBD - 1;
2415
2416         CSR_WRITE_4(sc, IPW_CSR_TX_BASE,  sc->tbd_phys);
2417         CSR_WRITE_4(sc, IPW_CSR_TX_SIZE,  IPW_NTBD);
2418         CSR_WRITE_4(sc, IPW_CSR_TX_READ,  0);
2419         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
2420
2421         CSR_WRITE_4(sc, IPW_CSR_RX_BASE,  sc->rbd_phys);
2422         CSR_WRITE_4(sc, IPW_CSR_RX_SIZE,  IPW_NRBD);
2423         CSR_WRITE_4(sc, IPW_CSR_RX_READ,  0);
2424         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
2425
2426         CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys);
2427
2428         fw = (const char *)fp->data + sizeof *hdr;
2429         if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) {
2430                 device_printf(sc->sc_dev, "could not load firmware\n");
2431                 goto fail;
2432         }
2433
2434         sc->flags |= IPW_FLAG_FW_INITED;
2435
2436         /* retrieve information tables base addresses */
2437         sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE);
2438         sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE);
2439
2440         ipw_write_table1(sc, IPW_INFO_LOCK, 0);
2441
2442         if (ipw_config(sc) != 0) {
2443                 device_printf(sc->sc_dev, "device configuration failed\n");
2444                 goto fail;
2445         }
2446
2447         callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
2448         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2449         ifp->if_drv_flags |= IFF_DRV_RUNNING;
2450
2451         sc->flags &=~ IPW_FLAG_INIT_LOCKED;
2452         return;
2453
2454 fail:
2455         ipw_stop_locked(sc);
2456         sc->flags &=~ IPW_FLAG_INIT_LOCKED;
2457 }
2458
2459 static int
2460 ipw_config(struct ipw_softc *sc)
2461 {
2462         struct ifnet *ifp = sc->sc_ifp;
2463         struct ieee80211com *ic = ifp->if_l2com;
2464         struct ipw_configuration config;
2465         uint32_t data;
2466         int error;
2467
2468         error = ipw_disable(sc);
2469         if (error != 0)
2470                 return error;
2471
2472         switch (ic->ic_opmode) {
2473         case IEEE80211_M_STA:
2474         case IEEE80211_M_HOSTAP:
2475         case IEEE80211_M_WDS:           /* XXX */
2476                 data = htole32(IPW_MODE_BSS);
2477                 break;
2478         case IEEE80211_M_IBSS:
2479         case IEEE80211_M_AHDEMO:
2480                 data = htole32(IPW_MODE_IBSS);
2481                 break;
2482         case IEEE80211_M_MONITOR:
2483                 data = htole32(IPW_MODE_MONITOR);
2484                 break;
2485         default:
2486                 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
2487                 return EINVAL;
2488         }
2489         DPRINTF(("Setting mode to %u\n", le32toh(data)));
2490         error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data);
2491         if (error != 0)
2492                 return error;
2493
2494         if (ic->ic_opmode == IEEE80211_M_IBSS ||
2495             ic->ic_opmode == IEEE80211_M_MONITOR) {
2496                 error = ipw_setchannel(sc, ic->ic_curchan);
2497                 if (error != 0)
2498                         return error;
2499         }
2500
2501         if (ic->ic_opmode == IEEE80211_M_MONITOR)
2502                 return ipw_enable(sc);
2503
2504         config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK |
2505             IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE);
2506         if (ic->ic_opmode == IEEE80211_M_IBSS)
2507                 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START);
2508         if (ifp->if_flags & IFF_PROMISC)
2509                 config.flags |= htole32(IPW_CFG_PROMISCUOUS);
2510         config.bss_chan = htole32(0x3fff); /* channels 1-14 */
2511         config.ibss_chan = htole32(0x7ff); /* channels 1-11 */
2512         DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags)));
2513         error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config);
2514         if (error != 0)
2515                 return error;
2516
2517         data = htole32(0xf); /* 1, 2, 5.5, 11 */
2518         DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data)));
2519         error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data);
2520         if (error != 0)
2521                 return error;
2522
2523         /* Use the same rate set */
2524         DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data)));
2525         error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data);
2526         if (error != 0)
2527                 return error;
2528
2529         /* Use the same rate set */
2530         DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data)));
2531         error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data);
2532         if (error != 0)
2533                 return error;
2534
2535         data = htole32(IPW_POWER_MODE_CAM);
2536         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2537         error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data);
2538         if (error != 0)
2539                 return error;
2540
2541         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2542                 data = htole32(32); /* default value */
2543                 DPRINTF(("Setting tx power index to %u\n", le32toh(data)));
2544                 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data,
2545                     sizeof data);
2546                 if (error != 0)
2547                         return error;
2548         }
2549
2550         return 0;
2551 }
2552
2553 static void
2554 ipw_stop(void *priv)
2555 {
2556         struct ipw_softc *sc = priv;
2557
2558         IPW_LOCK(sc);
2559         ipw_stop_locked(sc);
2560         IPW_UNLOCK(sc);
2561 }
2562
2563 static void
2564 ipw_stop_locked(struct ipw_softc *sc)
2565 {
2566         struct ifnet *ifp = sc->sc_ifp;
2567         int i;
2568
2569         IPW_LOCK_ASSERT(sc);
2570
2571         callout_stop(&sc->sc_wdtimer);
2572         ipw_stop_master(sc);
2573
2574         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET);
2575
2576         /*
2577          * Release tx buffers.
2578          */
2579         for (i = 0; i < IPW_NTBD; i++)
2580                 ipw_release_sbd(sc, &sc->stbd_list[i]);
2581
2582         sc->sc_tx_timer = 0;
2583         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2584 }
2585
2586 static int
2587 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)
2588 {
2589         struct ipw_softc *sc = arg1;
2590         uint32_t i, size, buf[256];
2591
2592         memset(buf, 0, sizeof buf);
2593
2594         if (!(sc->flags & IPW_FLAG_FW_INITED))
2595                 return SYSCTL_OUT(req, buf, sizeof buf);
2596
2597         CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base);
2598
2599         size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256);
2600         for (i = 1; i < size; i++)
2601                 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA));
2602
2603         return SYSCTL_OUT(req, buf, size);
2604 }
2605
2606 static int
2607 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)
2608 {
2609         struct ipw_softc *sc = arg1;
2610         int val;
2611
2612         val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) &&
2613                 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED));
2614
2615         return SYSCTL_OUT(req, &val, sizeof val);
2616 }
2617
2618 static uint32_t
2619 ipw_read_table1(struct ipw_softc *sc, uint32_t off)
2620 {
2621         return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off));
2622 }
2623
2624 static void
2625 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info)
2626 {
2627         MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info);
2628 }
2629
2630 #if 0
2631 static int
2632 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len)
2633 {
2634         uint32_t addr, info;
2635         uint16_t count, size;
2636         uint32_t total;
2637
2638         /* addr[4] + count[2] + size[2] */
2639         addr = MEM_READ_4(sc, sc->table2_base + off);
2640         info = MEM_READ_4(sc, sc->table2_base + off + 4);
2641
2642         count = info >> 16;
2643         size = info & 0xffff;
2644         total = count * size;
2645
2646         if (total > *len) {
2647                 *len = total;
2648                 return EINVAL;
2649         }
2650
2651         *len = total;
2652         ipw_read_mem_1(sc, addr, buf, total);
2653
2654         return 0;
2655 }
2656
2657 static void
2658 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2659     bus_size_t count)
2660 {
2661         for (; count > 0; offset++, datap++, count--) {
2662                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2663                 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3));
2664         }
2665 }
2666 #endif
2667
2668 static void
2669 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap,
2670     bus_size_t count)
2671 {
2672         for (; count > 0; offset++, datap++, count--) {
2673                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2674                 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap);
2675         }
2676 }
2677
2678 static void
2679 ipw_scan_start(struct ieee80211com *ic)
2680 {
2681         struct ifnet *ifp = ic->ic_ifp;
2682         struct ipw_softc *sc = ifp->if_softc;
2683
2684         IPW_LOCK(sc);
2685         ipw_scan(sc);
2686         IPW_UNLOCK(sc);
2687 }
2688
2689 static void
2690 ipw_set_channel(struct ieee80211com *ic)
2691 {
2692         struct ifnet *ifp = ic->ic_ifp;
2693         struct ipw_softc *sc = ifp->if_softc;
2694
2695         IPW_LOCK(sc);
2696         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2697                 ipw_disable(sc);
2698                 ipw_setchannel(sc, ic->ic_curchan);
2699                 ipw_enable(sc);
2700         }
2701         IPW_UNLOCK(sc);
2702 }
2703
2704 static void
2705 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
2706 {
2707         /* NB: all channels are scanned at once */
2708 }
2709
2710 static void
2711 ipw_scan_mindwell(struct ieee80211_scan_state *ss)
2712 {
2713         /* NB: don't try to abort scan; wait for firmware to finish */
2714 }
2715
2716 static void
2717 ipw_scan_end(struct ieee80211com *ic)
2718 {
2719         struct ifnet *ifp = ic->ic_ifp;
2720         struct ipw_softc *sc = ifp->if_softc;
2721
2722         IPW_LOCK(sc);
2723         sc->flags &= ~IPW_FLAG_SCANNING;
2724         IPW_UNLOCK(sc);
2725 }