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