sys/dev/ipw/if_ipw.c

   1 /*      $FreeBSD$       */
   2
   3 /*-
   4  * Copyright (c) 2004-2006
   5  *      Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
   6  * Copyright (c) 2006 Sam Leffler, Errno Consulting
   7  * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice unmodified, this list of conditions, and the following
  14  *    disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __FBSDID("$FreeBSD$");
  34
  35 /*-
  36  * Intel(R) PRO/Wireless 2100 MiniPCI driver
  37  * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
  38  */
  39
  40 #include <sys/param.h>
  41 #include <sys/sysctl.h>
  42 #include <sys/sockio.h>
  43 #include <sys/mbuf.h>
  44 #include <sys/kernel.h>
  45 #include <sys/socket.h>
  46 #include <sys/systm.h>
  47 #include <sys/malloc.h>
  48 #include <sys/queue.h>
  49 #include <sys/taskqueue.h>
  50 #include <sys/module.h>
  51 #include <sys/bus.h>
  52 #include <sys/endian.h>
  53 #include <sys/linker.h>
  54 #include <sys/firmware.h>
  55
  56 #include <machine/bus.h>
  57 #include <machine/resource.h>
  58 #include <sys/rman.h>
  59
  60 #include <dev/pci/pcireg.h>
  61 #include <dev/pci/pcivar.h>
  62
  63 #include <net/bpf.h>
  64 #include <net/if.h>
  65 #include <net/if_arp.h>
  66 #include <net/ethernet.h>
  67 #include <net/if_dl.h>
  68 #include <net/if_media.h>
  69 #include <net/if_types.h>
  70
  71 #include <net80211/ieee80211_var.h>
  72 #include <net80211/ieee80211_radiotap.h>
  73
  74 #include <netinet/in.h>
  75 #include <netinet/in_systm.h>
  76 #include <netinet/in_var.h>
  77 #include <netinet/ip.h>
  78 #include <netinet/if_ether.h>
  79
  80 #include <dev/ipw/if_ipwreg.h>
  81 #include <dev/ipw/if_ipwvar.h>
  82
  83 #define IPW_DEBUG
  84 #ifdef IPW_DEBUG
  85 #define DPRINTF(x)      do { if (ipw_debug > 0) printf x; } while (0)
  86 #define DPRINTFN(n, x)  do { if (ipw_debug >= (n)) printf x; } while (0)
  87 int ipw_debug = 0;
  88 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level");
  89 #else
  90 #define DPRINTF(x)
  91 #define DPRINTFN(n, x)
  92 #endif
  93
  94 MODULE_DEPEND(ipw, pci,  1, 1, 1);
  95 MODULE_DEPEND(ipw, wlan, 1, 1, 1);
  96 MODULE_DEPEND(ipw, firmware, 1, 1, 1);
  97
  98 struct ipw_ident {
  99         uint16_t        vendor;
 100         uint16_t        device;
 101         const char      *name;
 102 };
 103
 104 static const struct ipw_ident ipw_ident_table[] = {
 105         { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" },
 106
 107         { 0, 0, NULL }
 108 };
 109
 110 static struct ieee80211vap *ipw_vap_create(struct ieee80211com *,
 111                     const char name[IFNAMSIZ], int unit, int opmode, int flags,
 112                     const uint8_t bssid[IEEE80211_ADDR_LEN],
 113                     const uint8_t mac[IEEE80211_ADDR_LEN]);
 114 static void     ipw_vap_delete(struct ieee80211vap *);
 115 static int      ipw_dma_alloc(struct ipw_softc *);
 116 static void     ipw_release(struct ipw_softc *);
 117 static void     ipw_media_status(struct ifnet *, struct ifmediareq *);
 118 static int      ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 119 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t);
 120 static void     ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *);
 121 static void     ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *);
 122 static void     ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *,
 123                     struct ipw_soft_bd *, struct ipw_soft_buf *);
 124 static void     ipw_rx_intr(struct ipw_softc *);
 125 static void     ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *);
 126 static void     ipw_tx_intr(struct ipw_softc *);
 127 static void     ipw_intr(void *);
 128 static void     ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int);
 129 static const char * ipw_cmdname(int);
 130 static int      ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t);
 131 static int      ipw_tx_start(struct ifnet *, struct mbuf *,
 132                     struct ieee80211_node *);
 133 static int      ipw_raw_xmit(struct ieee80211_node *, struct mbuf *,
 134                     const struct ieee80211_bpf_params *);
 135 static void     ipw_start(struct ifnet *);
 136 static void     ipw_start_locked(struct ifnet *);
 137 static void     ipw_watchdog(void *);
 138 static int      ipw_ioctl(struct ifnet *, u_long, caddr_t);
 139 static void     ipw_stop_master(struct ipw_softc *);
 140 static int      ipw_enable(struct ipw_softc *);
 141 static int      ipw_disable(struct ipw_softc *);
 142 static int      ipw_reset(struct ipw_softc *);
 143 static int      ipw_load_ucode(struct ipw_softc *, const char *, int);
 144 static int      ipw_load_firmware(struct ipw_softc *, const char *, int);
 145 static int      ipw_config(struct ipw_softc *);
 146 static void     ipw_assoc(struct ieee80211com *, struct ieee80211vap *);
 147 static void     ipw_disassoc(struct ieee80211com *, struct ieee80211vap *);
 148 static void     ipw_init_task(void *, int);
 149 static void     ipw_init(void *);
 150 static void     ipw_init_locked(struct ipw_softc *);
 151 static void     ipw_stop(void *);
 152 static void     ipw_stop_locked(struct ipw_softc *);
 153 static int      ipw_sysctl_stats(SYSCTL_HANDLER_ARGS);
 154 static int      ipw_sysctl_radio(SYSCTL_HANDLER_ARGS);
 155 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t);
 156 static void     ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t);
 157 #if 0
 158 static int      ipw_read_table2(struct ipw_softc *, uint32_t, void *,
 159                     uint32_t *);
 160 static void     ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *,
 161                     bus_size_t);
 162 #endif
 163 static void     ipw_write_mem_1(struct ipw_softc *, bus_size_t,
 164                     const uint8_t *, bus_size_t);
 165 static int      ipw_scan(struct ipw_softc *);
 166 static void     ipw_scan_start(struct ieee80211com *);
 167 static void     ipw_scan_end(struct ieee80211com *);
 168 static void     ipw_set_channel(struct ieee80211com *);
 169 static void     ipw_scan_curchan(struct ieee80211_scan_state *,
 170                     unsigned long maxdwell);
 171 static void     ipw_scan_mindwell(struct ieee80211_scan_state *);
 172
 173 static int ipw_probe(device_t);
 174 static int ipw_attach(device_t);
 175 static int ipw_detach(device_t);
 176 static int ipw_shutdown(device_t);
 177 static int ipw_suspend(device_t);
 178 static int ipw_resume(device_t);
 179
 180 static device_method_t ipw_methods[] = {
 181         /* Device interface */
 182         DEVMETHOD(device_probe,         ipw_probe),
 183         DEVMETHOD(device_attach,        ipw_attach),
 184         DEVMETHOD(device_detach,        ipw_detach),
 185         DEVMETHOD(device_shutdown,      ipw_shutdown),
 186         DEVMETHOD(device_suspend,       ipw_suspend),
 187         DEVMETHOD(device_resume,        ipw_resume),
 188
 189         { 0, 0 }
 190 };
 191
 192 static driver_t ipw_driver = {
 193         "ipw",
 194         ipw_methods,
 195         sizeof (struct ipw_softc)
 196 };
 197
 198 static devclass_t ipw_devclass;
 199
 200 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, 0, 0);
 201
 202 MODULE_VERSION(ipw, 1);
 203
 204 static int
 205 ipw_probe(device_t dev)
 206 {
 207         const struct ipw_ident *ident;
 208
 209         for (ident = ipw_ident_table; ident->name != NULL; ident++) {
 210                 if (pci_get_vendor(dev) == ident->vendor &&
 211                     pci_get_device(dev) == ident->device) {
 212                         device_set_desc(dev, ident->name);
 213                         return 0;
 214                 }
 215         }
 216         return ENXIO;
 217 }
 218
 219 /* Base Address Register */
 220 #define IPW_PCI_BAR0    0x10
 221
 222 static int
 223 ipw_attach(device_t dev)
 224 {
 225         struct ipw_softc *sc = device_get_softc(dev);
 226         struct ifnet *ifp;
 227         struct ieee80211com *ic;
 228         struct ieee80211_channel *c;
 229         uint16_t val;
 230         int error, i;
 231         uint8_t macaddr[IEEE80211_ADDR_LEN];
 232
 233         sc->sc_dev = dev;
 234
 235         mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
 236             MTX_DEF | MTX_RECURSE);
 237
 238         TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc);
 239         callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
 240
 241         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 242                 device_printf(dev, "chip is in D%d power mode "
 243                     "-- setting to D0\n", pci_get_powerstate(dev));
 244                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 245         }
 246
 247         pci_write_config(dev, 0x41, 0, 1);
 248
 249         /* enable bus-mastering */
 250         pci_enable_busmaster(dev);
 251
 252         sc->mem_rid = IPW_PCI_BAR0;
 253         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
 254             RF_ACTIVE);
 255         if (sc->mem == NULL) {
 256                 device_printf(dev, "could not allocate memory resource\n");
 257                 goto fail;
 258         }
 259
 260         sc->sc_st = rman_get_bustag(sc->mem);
 261         sc->sc_sh = rman_get_bushandle(sc->mem);
 262
 263         sc->irq_rid = 0;
 264         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
 265             RF_ACTIVE | RF_SHAREABLE);
 266         if (sc->irq == NULL) {
 267                 device_printf(dev, "could not allocate interrupt resource\n");
 268                 goto fail1;
 269         }
 270
 271         if (ipw_reset(sc) != 0) {
 272                 device_printf(dev, "could not reset adapter\n");
 273                 goto fail2;
 274         }
 275
 276         if (ipw_dma_alloc(sc) != 0) {
 277                 device_printf(dev, "could not allocate DMA resources\n");
 278                 goto fail2;
 279         }
 280
 281         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 282         if (ifp == NULL) {
 283                 device_printf(dev, "can not if_alloc()\n");
 284                 goto fail3;
 285         }
 286         ic = ifp->if_l2com;
 287
 288         ifp->if_softc = sc;
 289         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 290         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 291         ifp->if_init = ipw_init;
 292         ifp->if_ioctl = ipw_ioctl;
 293         ifp->if_start = ipw_start;
 294         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 295         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 296         IFQ_SET_READY(&ifp->if_snd);
 297
 298         ic->ic_ifp = ifp;
 299         ic->ic_opmode = IEEE80211_M_STA;
 300         ic->ic_phytype = IEEE80211_T_DS;
 301
 302         /* set device capabilities */
 303         ic->ic_caps =
 304                   IEEE80211_C_STA               /* station mode supported */
 305                 | IEEE80211_C_IBSS              /* IBSS mode supported */
 306                 | IEEE80211_C_MONITOR           /* monitor mode supported */
 307                 | IEEE80211_C_PMGT              /* power save supported */
 308                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 309                 | IEEE80211_C_WPA               /* 802.11i supported */
 310                 ;
 311
 312         /* read MAC address from EEPROM */
 313         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0);
 314         macaddr[0] = val >> 8;
 315         macaddr[1] = val & 0xff;
 316         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1);
 317         macaddr[2] = val >> 8;
 318         macaddr[3] = val & 0xff;
 319         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2);
 320         macaddr[4] = val >> 8;
 321         macaddr[5] = val & 0xff;
 322
 323         /* set supported .11b channels (read from EEPROM) */
 324         if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0)
 325                 val = 0x7ff; /* default to channels 1-11 */
 326         val <<= 1;
 327         for (i = 1; i < 16; i++) {
 328                 if (val & (1 << i)) {
 329                         c = &ic->ic_channels[ic->ic_nchans++];
 330                         c->ic_freq = ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 331                         c->ic_flags = IEEE80211_CHAN_B;
 332                         c->ic_ieee = i;
 333                 }
 334         }
 335
 336         /* check support for radio transmitter switch in EEPROM */
 337         if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8))
 338                 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH;
 339
 340         ieee80211_ifattach(ic, macaddr);
 341         ic->ic_scan_start = ipw_scan_start;
 342         ic->ic_scan_end = ipw_scan_end;
 343         ic->ic_set_channel = ipw_set_channel;
 344         ic->ic_scan_curchan = ipw_scan_curchan;
 345         ic->ic_scan_mindwell = ipw_scan_mindwell;
 346         ic->ic_raw_xmit = ipw_raw_xmit;
 347
 348         ic->ic_vap_create = ipw_vap_create;
 349         ic->ic_vap_delete = ipw_vap_delete;
 350
 351         ieee80211_radiotap_attach(ic,
 352             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 353                 IPW_TX_RADIOTAP_PRESENT,
 354             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 355                 IPW_RX_RADIOTAP_PRESENT);
 356
 357         /*
 358          * Add a few sysctl knobs.
 359          */
 360         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 361             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio",
 362             CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I",
 363             "radio transmitter switch state (0=off, 1=on)");
 364
 365         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 366             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
 367             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S",
 368             "statistics");
 369
 370         /*
 371          * Hook our interrupt after all initialization is complete.
 372          */
 373         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 374             NULL, ipw_intr, sc, &sc->sc_ih);
 375         if (error != 0) {
 376                 device_printf(dev, "could not set up interrupt\n");
 377                 goto fail4;
 378         }
 379
 380         if (bootverbose)
 381                 ieee80211_announce(ic);
 382
 383         return 0;
 384 fail4:
 385         if_free(ifp);
 386 fail3:
 387         ipw_release(sc);
 388 fail2:
 389         bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
 390 fail1:
 391         bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
 392 fail:
 393         mtx_destroy(&sc->sc_mtx);
 394         return ENXIO;
 395 }
 396
 397 static int
 398 ipw_detach(device_t dev)
 399 {
 400         struct ipw_softc *sc = device_get_softc(dev);
 401         struct ifnet *ifp = sc->sc_ifp;
 402         struct ieee80211com *ic = ifp->if_l2com;
 403
 404         ieee80211_draintask(ic, &sc->sc_init_task);
 405         ipw_stop(sc);
 406
 407         ieee80211_ifdetach(ic);
 408
 409         callout_drain(&sc->sc_wdtimer);
 410
 411         ipw_release(sc);
 412
 413         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 414         bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
 415
 416         bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
 417
 418         if_free(ifp);
 419
 420         if (sc->sc_firmware != NULL) {
 421                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 422                 sc->sc_firmware = NULL;
 423         }
 424
 425         mtx_destroy(&sc->sc_mtx);
 426
 427         return 0;
 428 }
 429
 430 static struct ieee80211vap *
 431 ipw_vap_create(struct ieee80211com *ic,
 432         const char name[IFNAMSIZ], int unit, int opmode, int flags,
 433         const uint8_t bssid[IEEE80211_ADDR_LEN],
 434         const uint8_t mac[IEEE80211_ADDR_LEN])
 435 {
 436         struct ifnet *ifp = ic->ic_ifp;
 437         struct ipw_softc *sc = ifp->if_softc;
 438         struct ipw_vap *ivp;
 439         struct ieee80211vap *vap;
 440         const struct firmware *fp;
 441         const struct ipw_firmware_hdr *hdr;
 442         const char *imagename;
 443
 444         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 445                 return NULL;
 446
 447         switch (opmode) {
 448         case IEEE80211_M_STA:
 449                 imagename = "ipw_bss";
 450                 break;
 451         case IEEE80211_M_IBSS:
 452                 imagename = "ipw_ibss";
 453                 break;
 454         case IEEE80211_M_MONITOR:
 455                 imagename = "ipw_monitor";
 456                 break;
 457         default:
 458                 return NULL;
 459         }
 460
 461         /*
 462          * Load firmware image using the firmware(9) subsystem.  Doing
 463          * this unlocked is ok since we're single-threaded by the
 464          * 802.11 layer.
 465          */
 466         if (sc->sc_firmware == NULL ||
 467             strcmp(sc->sc_firmware->name, imagename) != 0) {
 468                 if (sc->sc_firmware != NULL)
 469                         firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 470                 sc->sc_firmware = firmware_get(imagename);
 471         }
 472         if (sc->sc_firmware == NULL) {
 473                 device_printf(sc->sc_dev,
 474                     "could not load firmware image '%s'\n", imagename);
 475                 return NULL;
 476         }
 477         fp = sc->sc_firmware;
 478         if (fp->datasize < sizeof *hdr) {
 479                 device_printf(sc->sc_dev,
 480                     "firmware image too short %zu\n", fp->datasize);
 481                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 482                 sc->sc_firmware = NULL;
 483                 return NULL;
 484         }
 485         hdr = (const struct ipw_firmware_hdr *)fp->data;
 486         if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) +
 487             le32toh(hdr->ucodesz)) {
 488                 device_printf(sc->sc_dev,
 489                     "firmware image too short %zu\n", fp->datasize);
 490                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 491                 sc->sc_firmware = NULL;
 492                 return NULL;
 493         }
 494
 495         ivp = (struct ipw_vap *) malloc(sizeof(struct ipw_vap),
 496             M_80211_VAP, M_NOWAIT | M_ZERO);
 497         if (ivp == NULL)
 498                 return NULL;
 499         vap = &ivp->vap;
 500
 501         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
 502         /* override with driver methods */
 503         ivp->newstate = vap->iv_newstate;
 504         vap->iv_newstate = ipw_newstate;
 505
 506         /* complete setup */
 507         ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status);
 508         ic->ic_opmode = opmode;
 509         return vap;
 510 }
 511
 512 static void
 513 ipw_vap_delete(struct ieee80211vap *vap)
 514 {
 515         struct ipw_vap *ivp = IPW_VAP(vap);
 516
 517         ieee80211_vap_detach(vap);
 518         free(ivp, M_80211_VAP);
 519 }
 520
 521 static int
 522 ipw_dma_alloc(struct ipw_softc *sc)
 523 {
 524         struct ipw_soft_bd *sbd;
 525         struct ipw_soft_hdr *shdr;
 526         struct ipw_soft_buf *sbuf;
 527         bus_addr_t physaddr;
 528         int error, i;
 529
 530         /*
 531          * Allocate and map tx ring.
 532          */
 533         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 534             BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL,
 535             NULL, &sc->tbd_dmat);
 536         if (error != 0) {
 537                 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
 538                 goto fail;
 539         }
 540
 541         error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list,
 542             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map);
 543         if (error != 0) {
 544                 device_printf(sc->sc_dev,
 545                     "could not allocate tx ring DMA memory\n");
 546                 goto fail;
 547         }
 548
 549         error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list,
 550             IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0);
 551         if (error != 0) {
 552                 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n");
 553                 goto fail;
 554         }
 555
 556         /*
 557          * Allocate and map rx ring.
 558          */
 559         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 560             BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL,
 561             NULL, &sc->rbd_dmat);
 562         if (error != 0) {
 563                 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n");
 564                 goto fail;
 565         }
 566
 567         error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list,
 568             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map);
 569         if (error != 0) {
 570                 device_printf(sc->sc_dev,
 571                     "could not allocate rx ring DMA memory\n");
 572                 goto fail;
 573         }
 574
 575         error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list,
 576             IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0);
 577         if (error != 0) {
 578                 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n");
 579                 goto fail;
 580         }
 581
 582         /*
 583          * Allocate and map status ring.
 584          */
 585         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 586             BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0,
 587             NULL, NULL, &sc->status_dmat);
 588         if (error != 0) {
 589                 device_printf(sc->sc_dev,
 590                     "could not create status ring DMA tag\n");
 591                 goto fail;
 592         }
 593
 594         error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list,
 595             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map);
 596         if (error != 0) {
 597                 device_printf(sc->sc_dev,
 598                     "could not allocate status ring DMA memory\n");
 599                 goto fail;
 600         }
 601
 602         error = bus_dmamap_load(sc->status_dmat, sc->status_map,
 603             sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys,
 604             0);
 605         if (error != 0) {
 606                 device_printf(sc->sc_dev,
 607                     "could not map status ring DMA memory\n");
 608                 goto fail;
 609         }
 610
 611         /*
 612          * Allocate command DMA map.
 613          */
 614         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 615             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1,
 616             sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat);
 617         if (error != 0) {
 618                 device_printf(sc->sc_dev, "could not create command DMA tag\n");
 619                 goto fail;
 620         }
 621
 622         error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map);
 623         if (error != 0) {
 624                 device_printf(sc->sc_dev,
 625                     "could not create command DMA map\n");
 626                 goto fail;
 627         }
 628
 629         /*
 630          * Allocate headers DMA maps.
 631          */
 632         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 633             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1,
 634             sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat);
 635         if (error != 0) {
 636                 device_printf(sc->sc_dev, "could not create header DMA tag\n");
 637                 goto fail;
 638         }
 639
 640         SLIST_INIT(&sc->free_shdr);
 641         for (i = 0; i < IPW_NDATA; i++) {
 642                 shdr = &sc->shdr_list[i];
 643                 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map);
 644                 if (error != 0) {
 645                         device_printf(sc->sc_dev,
 646                             "could not create header DMA map\n");
 647                         goto fail;
 648                 }
 649                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
 650         }
 651
 652         /*
 653          * Allocate tx buffers DMA maps.
 654          */
 655         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 656             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0,
 657             NULL, NULL, &sc->txbuf_dmat);
 658         if (error != 0) {
 659                 device_printf(sc->sc_dev, "could not create tx DMA tag\n");
 660                 goto fail;
 661         }
 662
 663         SLIST_INIT(&sc->free_sbuf);
 664         for (i = 0; i < IPW_NDATA; i++) {
 665                 sbuf = &sc->tx_sbuf_list[i];
 666                 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map);
 667                 if (error != 0) {
 668                         device_printf(sc->sc_dev,
 669                             "could not create tx DMA map\n");
 670                         goto fail;
 671                 }
 672                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
 673         }
 674
 675         /*
 676          * Initialize tx ring.
 677          */
 678         for (i = 0; i < IPW_NTBD; i++) {
 679                 sbd = &sc->stbd_list[i];
 680                 sbd->bd = &sc->tbd_list[i];
 681                 sbd->type = IPW_SBD_TYPE_NOASSOC;
 682         }
 683
 684         /*
 685          * Pre-allocate rx buffers and DMA maps.
 686          */
 687         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 688             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
 689             NULL, &sc->rxbuf_dmat);
 690         if (error != 0) {
 691                 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
 692                 goto fail;
 693         }
 694
 695         for (i = 0; i < IPW_NRBD; i++) {
 696                 sbd = &sc->srbd_list[i];
 697                 sbuf = &sc->rx_sbuf_list[i];
 698                 sbd->bd = &sc->rbd_list[i];
 699
 700                 sbuf->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
 701                 if (sbuf->m == NULL) {
 702                         device_printf(sc->sc_dev,
 703                             "could not allocate rx mbuf\n");
 704                         error = ENOMEM;
 705                         goto fail;
 706                 }
 707
 708                 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map);
 709                 if (error != 0) {
 710                         device_printf(sc->sc_dev,
 711                             "could not create rx DMA map\n");
 712                         goto fail;
 713                 }
 714
 715                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
 716                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
 717                     &physaddr, 0);
 718                 if (error != 0) {
 719                         device_printf(sc->sc_dev,
 720                             "could not map rx DMA memory\n");
 721                         goto fail;
 722                 }
 723
 724                 sbd->type = IPW_SBD_TYPE_DATA;
 725                 sbd->priv = sbuf;
 726                 sbd->bd->physaddr = htole32(physaddr);
 727                 sbd->bd->len = htole32(MCLBYTES);
 728         }
 729
 730         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
 731
 732         return 0;
 733
 734 fail:   ipw_release(sc);
 735         return error;
 736 }
 737
 738 static void
 739 ipw_release(struct ipw_softc *sc)
 740 {
 741         struct ipw_soft_buf *sbuf;
 742         int i;
 743
 744         if (sc->tbd_dmat != NULL) {
 745                 if (sc->stbd_list != NULL) {
 746                         bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map);
 747                         bus_dmamem_free(sc->tbd_dmat, sc->tbd_list,
 748                             sc->tbd_map);
 749                 }
 750                 bus_dma_tag_destroy(sc->tbd_dmat);
 751         }
 752
 753         if (sc->rbd_dmat != NULL) {
 754                 if (sc->rbd_list != NULL) {
 755                         bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map);
 756                         bus_dmamem_free(sc->rbd_dmat, sc->rbd_list,
 757                             sc->rbd_map);
 758                 }
 759                 bus_dma_tag_destroy(sc->rbd_dmat);
 760         }
 761
 762         if (sc->status_dmat != NULL) {
 763                 if (sc->status_list != NULL) {
 764                         bus_dmamap_unload(sc->status_dmat, sc->status_map);
 765                         bus_dmamem_free(sc->status_dmat, sc->status_list,
 766                             sc->status_map);
 767                 }
 768                 bus_dma_tag_destroy(sc->status_dmat);
 769         }
 770
 771         for (i = 0; i < IPW_NTBD; i++)
 772                 ipw_release_sbd(sc, &sc->stbd_list[i]);
 773
 774         if (sc->cmd_dmat != NULL) {
 775                 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map);
 776                 bus_dma_tag_destroy(sc->cmd_dmat);
 777         }
 778
 779         if (sc->hdr_dmat != NULL) {
 780                 for (i = 0; i < IPW_NDATA; i++)
 781                         bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map);
 782                 bus_dma_tag_destroy(sc->hdr_dmat);
 783         }
 784
 785         if (sc->txbuf_dmat != NULL) {
 786                 for (i = 0; i < IPW_NDATA; i++) {
 787                         bus_dmamap_destroy(sc->txbuf_dmat,
 788                             sc->tx_sbuf_list[i].map);
 789                 }
 790                 bus_dma_tag_destroy(sc->txbuf_dmat);
 791         }
 792
 793         if (sc->rxbuf_dmat != NULL) {
 794                 for (i = 0; i < IPW_NRBD; i++) {
 795                         sbuf = &sc->rx_sbuf_list[i];
 796                         if (sbuf->m != NULL) {
 797                                 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map,
 798                                     BUS_DMASYNC_POSTREAD);
 799                                 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
 800                                 m_freem(sbuf->m);
 801                         }
 802                         bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map);
 803                 }
 804                 bus_dma_tag_destroy(sc->rxbuf_dmat);
 805         }
 806 }
 807
 808 static int
 809 ipw_shutdown(device_t dev)
 810 {
 811         struct ipw_softc *sc = device_get_softc(dev);
 812
 813         ipw_stop(sc);
 814
 815         return 0;
 816 }
 817
 818 static int
 819 ipw_suspend(device_t dev)
 820 {
 821         struct ipw_softc *sc = device_get_softc(dev);
 822
 823         ipw_stop(sc);
 824
 825         return 0;
 826 }
 827
 828 static int
 829 ipw_resume(device_t dev)
 830 {
 831         struct ipw_softc *sc = device_get_softc(dev);
 832         struct ifnet *ifp = sc->sc_ifp;
 833
 834         pci_write_config(dev, 0x41, 0, 1);
 835
 836         if (ifp->if_flags & IFF_UP)
 837                 ipw_init(sc);
 838
 839         return 0;
 840 }
 841
 842 static int
 843 ipw_cvtrate(int ipwrate)
 844 {
 845         switch (ipwrate) {
 846         case IPW_RATE_DS1:      return 2;
 847         case IPW_RATE_DS2:      return 4;
 848         case IPW_RATE_DS5:      return 11;
 849         case IPW_RATE_DS11:     return 22;
 850         }
 851         return 0;
 852 }
 853
 854 /*
 855  * The firmware automatically adapts the transmit speed. We report its current
 856  * value here.
 857  */
 858 static void
 859 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 860 {
 861         struct ieee80211vap *vap = ifp->if_softc;
 862         struct ieee80211com *ic = vap->iv_ic;
 863         struct ipw_softc *sc = ic->ic_ifp->if_softc;
 864
 865         /* read current transmission rate from adapter */
 866         vap->iv_bss->ni_txrate = ipw_cvtrate(
 867             ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf);
 868         ieee80211_media_status(ifp, imr);
 869 }
 870
 871 static int
 872 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 873 {
 874         struct ipw_vap *ivp = IPW_VAP(vap);
 875         struct ieee80211com *ic = vap->iv_ic;
 876         struct ifnet *ifp = ic->ic_ifp;
 877         struct ipw_softc *sc = ifp->if_softc;
 878         enum ieee80211_state ostate;
 879
 880         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
 881                 ieee80211_state_name[vap->iv_state],
 882                 ieee80211_state_name[nstate], sc->flags));
 883
 884         ostate = vap->iv_state;
 885         IEEE80211_UNLOCK(ic);
 886
 887         switch (nstate) {
 888         case IEEE80211_S_RUN:
 889                 if (ic->ic_opmode == IEEE80211_M_IBSS) {
 890                         /*
 891                          * XXX when joining an ibss network we are called
 892                          * with a SCAN -> RUN transition on scan complete.
 893                          * Use that to call ipw_assoc.  On completing the
 894                          * join we are then called again with an AUTH -> RUN
 895                          * transition and we want to do nothing.  This is
 896                          * all totally bogus and needs to be redone.
 897                          */
 898                         if (ostate == IEEE80211_S_SCAN)
 899                                 ipw_assoc(ic, vap);
 900                 }
 901                 break;
 902
 903         case IEEE80211_S_INIT:
 904                 if (sc->flags & IPW_FLAG_ASSOCIATED)
 905                         ipw_disassoc(ic, vap);
 906                 break;
 907
 908         case IEEE80211_S_AUTH:
 909                 /*
 910                  * Move to ASSOC state after the ipw_assoc() call.  Firmware
 911                  * takes care of authentication, after the call we'll receive
 912                  * only an assoc response which would otherwise be discared
 913                  * if we are still in AUTH state.
 914                  */
 915                 nstate = IEEE80211_S_ASSOC;
 916                 ipw_assoc(ic, vap);
 917                 break;
 918
 919         case IEEE80211_S_ASSOC:
 920                 /*
 921                  * If we are not transitioning from AUTH then resend the
 922                  * association request.
 923                  */
 924                 if (ostate != IEEE80211_S_AUTH)
 925                         ipw_assoc(ic, vap);
 926                 break;
 927
 928         default:
 929                 break;
 930         }
 931         IEEE80211_LOCK(ic);
 932         return ivp->newstate(vap, nstate, arg);
 933 }
 934
 935 /*
 936  * Read 16 bits at address 'addr' from the serial EEPROM.
 937  */
 938 static uint16_t
 939 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr)
 940 {
 941         uint32_t tmp;
 942         uint16_t val;
 943         int n;
 944
 945         /* clock C once before the first command */
 946         IPW_EEPROM_CTL(sc, 0);
 947         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 948         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 949         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 950
 951         /* write start bit (1) */
 952         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 953         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 954
 955         /* write READ opcode (10) */
 956         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 957         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 958         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 959         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 960
 961         /* write address A7-A0 */
 962         for (n = 7; n >= 0; n--) {
 963                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 964                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D));
 965                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 966                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C);
 967         }
 968
 969         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 970
 971         /* read data Q15-Q0 */
 972         val = 0;
 973         for (n = 15; n >= 0; n--) {
 974                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 975                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 976                 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL);
 977                 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n;
 978         }
 979
 980         IPW_EEPROM_CTL(sc, 0);
 981
 982         /* clear Chip Select and clock C */
 983         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 984         IPW_EEPROM_CTL(sc, 0);
 985         IPW_EEPROM_CTL(sc, IPW_EEPROM_C);
 986
 987         return le16toh(val);
 988 }
 989
 990 static void
 991 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
 992 {
 993         struct ipw_cmd *cmd;
 994
 995         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
 996
 997         cmd = mtod(sbuf->m, struct ipw_cmd *);
 998
 999         DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n",
1000             ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type),
1001             le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len),
1002             le32toh(cmd->status)));
1003
1004         sc->flags &= ~IPW_FLAG_BUSY;
1005         wakeup(sc);
1006 }
1007
1008 static void
1009 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
1010 {
1011 #define IEEESTATE(vap)  ieee80211_state_name[vap->iv_state]
1012         struct ifnet *ifp = sc->sc_ifp;
1013         struct ieee80211com *ic = ifp->if_l2com;
1014         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1015         uint32_t state;
1016
1017         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1018
1019         state = le32toh(*mtod(sbuf->m, uint32_t *));
1020
1021         switch (state) {
1022         case IPW_STATE_ASSOCIATED:
1023                 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n",
1024                         IEEESTATE(vap), sc->flags));
1025                 /* XXX suppress state change in case the fw auto-associates */
1026                 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) {
1027                         DPRINTF(("Unexpected association (%s, flags 0x%x)\n",
1028                                 IEEESTATE(vap), sc->flags));
1029                         break;
1030                 }
1031                 sc->flags &= ~IPW_FLAG_ASSOCIATING;
1032                 sc->flags |= IPW_FLAG_ASSOCIATED;
1033                 break;
1034
1035         case IPW_STATE_SCANNING:
1036                 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n",
1037                         IEEESTATE(vap), sc->flags));
1038                 /*
1039                  * NB: Check driver state for association on assoc
1040                  * loss as the firmware will immediately start to
1041                  * scan and we would treat it as a beacon miss if
1042                  * we checked the 802.11 layer state.
1043                  */
1044                 if (sc->flags & IPW_FLAG_ASSOCIATED) {
1045                         IPW_UNLOCK(sc);
1046                         /* XXX probably need to issue disassoc to fw */
1047                         ieee80211_beacon_miss(ic);
1048                         IPW_LOCK(sc);
1049                 }
1050                 break;
1051
1052         case IPW_STATE_SCAN_COMPLETE:
1053                 /*
1054                  * XXX For some reason scan requests generate scan
1055                  * started + scan done events before any traffic is
1056                  * received (e.g. probe response frames).  We work
1057                  * around this by marking the HACK flag and skipping
1058                  * the first scan complete event.
1059                 */
1060                 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n",
1061                             IEEESTATE(vap), sc->flags));
1062                 if (sc->flags & IPW_FLAG_HACK) {
1063                         sc->flags &= ~IPW_FLAG_HACK;
1064                         break;
1065                 }
1066                 if (sc->flags & IPW_FLAG_SCANNING) {
1067                         IPW_UNLOCK(sc);
1068                         ieee80211_scan_done(vap);
1069                         IPW_LOCK(sc);
1070                         sc->flags &= ~IPW_FLAG_SCANNING;
1071                         sc->sc_scan_timer = 0;
1072                 }
1073                 break;
1074
1075         case IPW_STATE_ASSOCIATION_LOST:
1076                 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n",
1077                         IEEESTATE(vap), sc->flags));
1078                 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1079                 if (vap->iv_state == IEEE80211_S_RUN) {
1080                         IPW_UNLOCK(sc);
1081                         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1082                         IPW_LOCK(sc);
1083                 }
1084                 break;
1085
1086         case IPW_STATE_DISABLED:
1087                 /* XXX? is this right? */
1088                 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING |
1089                     IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1090                 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n",
1091                         IEEESTATE(vap), sc->flags));
1092                 break;
1093
1094         case IPW_STATE_RADIO_DISABLED:
1095                 device_printf(sc->sc_dev, "radio turned off\n");
1096                 ieee80211_notify_radio(ic, 0);
1097                 ipw_stop_locked(sc);
1098                 /* XXX start polling thread to detect radio on */
1099                 break;
1100
1101         default:
1102                 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n",
1103                         __func__, state, IEEESTATE(vap), sc->flags));
1104                 break;
1105         }
1106 #undef IEEESTATE
1107 }
1108
1109 /*
1110  * Set driver state for current channel.
1111  */
1112 static void
1113 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan)
1114 {
1115         struct ifnet *ifp = sc->sc_ifp;
1116         struct ieee80211com *ic = ifp->if_l2com;
1117
1118         ic->ic_curchan = chan;
1119         ieee80211_radiotap_chan_change(ic);
1120 }
1121
1122 /*
1123  * XXX: Hack to set the current channel to the value advertised in beacons or
1124  * probe responses. Only used during AP detection.
1125  */
1126 static void
1127 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m)
1128 {
1129         struct ifnet *ifp = sc->sc_ifp;
1130         struct ieee80211com *ic = ifp->if_l2com;
1131         struct ieee80211_channel *c;
1132         struct ieee80211_frame *wh;
1133         uint8_t subtype;
1134         uint8_t *frm, *efrm;
1135
1136         wh = mtod(m, struct ieee80211_frame *);
1137
1138         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
1139                 return;
1140
1141         subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1142
1143         if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1144             subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1145                 return;
1146
1147         /* XXX use ieee80211_parse_beacon */
1148         frm = (uint8_t *)(wh + 1);
1149         efrm = mtod(m, uint8_t *) + m->m_len;
1150
1151         frm += 12;      /* skip tstamp, bintval and capinfo fields */
1152         while (frm < efrm) {
1153                 if (*frm == IEEE80211_ELEMID_DSPARMS)
1154 #if IEEE80211_CHAN_MAX < 255
1155                 if (frm[2] <= IEEE80211_CHAN_MAX)
1156 #endif
1157                 {
1158                         DPRINTF(("Fixing channel to %d\n", frm[2]));
1159                         c = ieee80211_find_channel(ic,
1160                                 ieee80211_ieee2mhz(frm[2], 0),
1161                                 IEEE80211_CHAN_B);
1162                         if (c == NULL)
1163                                 c = &ic->ic_channels[0];
1164                         ipw_setcurchan(sc, c);
1165                 }
1166
1167                 frm += frm[1] + 2;
1168         }
1169 }
1170
1171 static void
1172 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status,
1173     struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf)
1174 {
1175         struct ifnet *ifp = sc->sc_ifp;
1176         struct ieee80211com *ic = ifp->if_l2com;
1177         struct mbuf *mnew, *m;
1178         struct ieee80211_node *ni;
1179         bus_addr_t physaddr;
1180         int error;
1181         int8_t rssi, nf;
1182
1183         DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len),
1184             status->rssi));
1185
1186         if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) ||
1187             le32toh(status->len) > MCLBYTES)
1188                 return;
1189
1190         /*
1191          * Try to allocate a new mbuf for this ring element and load it before
1192          * processing the current mbuf. If the ring element cannot be loaded,
1193          * drop the received packet and reuse the old mbuf. In the unlikely
1194          * case that the old mbuf can't be reloaded either, explicitly panic.
1195          */
1196         mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1197         if (mnew == NULL) {
1198                 ifp->if_ierrors++;
1199                 return;
1200         }
1201
1202         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1203         bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
1204
1205         error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *),
1206             MCLBYTES, ipw_dma_map_addr, &physaddr, 0);
1207         if (error != 0) {
1208                 m_freem(mnew);
1209
1210                 /* try to reload the old mbuf */
1211                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
1212                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
1213                     &physaddr, 0);
1214                 if (error != 0) {
1215                         /* very unlikely that it will fail... */
1216                         panic("%s: could not load old rx mbuf",
1217                             device_get_name(sc->sc_dev));
1218                 }
1219                 ifp->if_ierrors++;
1220                 return;
1221         }
1222
1223         /*
1224          * New mbuf successfully loaded, update Rx ring and continue
1225          * processing.
1226          */
1227         m = sbuf->m;
1228         sbuf->m = mnew;
1229         sbd->bd->physaddr = htole32(physaddr);
1230
1231         /* finalize mbuf */
1232         m->m_pkthdr.rcvif = ifp;
1233         m->m_pkthdr.len = m->m_len = le32toh(status->len);
1234
1235         rssi = status->rssi + IPW_RSSI_TO_DBM;
1236         nf = -95;
1237         if (ieee80211_radiotap_active(ic)) {
1238                 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap;
1239
1240                 tap->wr_flags = 0;
1241                 tap->wr_antsignal = rssi;
1242                 tap->wr_antnoise = nf;
1243         }
1244
1245         if (sc->flags & IPW_FLAG_SCANNING)
1246                 ipw_fix_channel(sc, m);
1247
1248         IPW_UNLOCK(sc);
1249         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1250         if (ni != NULL) {
1251                 (void) ieee80211_input(ni, m, rssi - nf, nf);
1252                 ieee80211_free_node(ni);
1253         } else
1254                 (void) ieee80211_input_all(ic, m, rssi - nf, nf);
1255         IPW_LOCK(sc);
1256
1257         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1258 }
1259
1260 static void
1261 ipw_rx_intr(struct ipw_softc *sc)
1262 {
1263         struct ipw_status *status;
1264         struct ipw_soft_bd *sbd;
1265         struct ipw_soft_buf *sbuf;
1266         uint32_t r, i;
1267
1268         if (!(sc->flags & IPW_FLAG_FW_INITED))
1269                 return;
1270
1271         r = CSR_READ_4(sc, IPW_CSR_RX_READ);
1272
1273         bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD);
1274
1275         for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) {
1276                 status = &sc->status_list[i];
1277                 sbd = &sc->srbd_list[i];
1278                 sbuf = sbd->priv;
1279
1280                 switch (le16toh(status->code) & 0xf) {
1281                 case IPW_STATUS_CODE_COMMAND:
1282                         ipw_rx_cmd_intr(sc, sbuf);
1283                         break;
1284
1285                 case IPW_STATUS_CODE_NEWSTATE:
1286                         ipw_rx_newstate_intr(sc, sbuf);
1287                         break;
1288
1289                 case IPW_STATUS_CODE_DATA_802_3:
1290                 case IPW_STATUS_CODE_DATA_802_11:
1291                         ipw_rx_data_intr(sc, status, sbd, sbuf);
1292                         break;
1293
1294                 case IPW_STATUS_CODE_NOTIFICATION:
1295                         DPRINTFN(2, ("notification status, len %u flags 0x%x\n",
1296                             le32toh(status->len), status->flags));
1297                         /* XXX maybe drive state machine AUTH->ASSOC? */
1298                         break;
1299
1300                 default:
1301                         device_printf(sc->sc_dev, "unexpected status code %u\n",
1302                             le16toh(status->code));
1303                 }
1304
1305                 /* firmware was killed, stop processing received frames */
1306                 if (!(sc->flags & IPW_FLAG_FW_INITED))
1307                         return;
1308
1309                 sbd->bd->flags = 0;
1310         }
1311
1312         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1313
1314         /* kick the firmware */
1315         sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1;
1316         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
1317 }
1318
1319 static void
1320 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd)
1321 {
1322         struct ipw_soft_hdr *shdr;
1323         struct ipw_soft_buf *sbuf;
1324
1325         switch (sbd->type) {
1326         case IPW_SBD_TYPE_COMMAND:
1327                 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map,
1328                     BUS_DMASYNC_POSTWRITE);
1329                 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map);
1330                 break;
1331
1332         case IPW_SBD_TYPE_HEADER:
1333                 shdr = sbd->priv;
1334                 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE);
1335                 bus_dmamap_unload(sc->hdr_dmat, shdr->map);
1336                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
1337                 break;
1338
1339         case IPW_SBD_TYPE_DATA:
1340                 sbuf = sbd->priv;
1341                 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map,
1342                     BUS_DMASYNC_POSTWRITE);
1343                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1344                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
1345
1346                 if (sbuf->m->m_flags & M_TXCB)
1347                         ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/);
1348                 m_freem(sbuf->m);
1349                 ieee80211_free_node(sbuf->ni);
1350
1351                 sc->sc_tx_timer = 0;
1352                 break;
1353         }
1354
1355         sbd->type = IPW_SBD_TYPE_NOASSOC;
1356 }
1357
1358 static void
1359 ipw_tx_intr(struct ipw_softc *sc)
1360 {
1361         struct ifnet *ifp = sc->sc_ifp;
1362         struct ipw_soft_bd *sbd;
1363         uint32_t r, i;
1364
1365         if (!(sc->flags & IPW_FLAG_FW_INITED))
1366                 return;
1367
1368         r = CSR_READ_4(sc, IPW_CSR_TX_READ);
1369
1370         for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) {
1371                 sbd = &sc->stbd_list[i];
1372
1373                 if (sbd->type == IPW_SBD_TYPE_DATA)
1374                         ifp->if_opackets++;
1375
1376                 ipw_release_sbd(sc, sbd);
1377                 sc->txfree++;
1378         }
1379
1380         /* remember what the firmware has processed */
1381         sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1;
1382
1383         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1384         ipw_start_locked(ifp);
1385 }
1386
1387 static void
1388 ipw_fatal_error_intr(struct ipw_softc *sc)
1389 {
1390         struct ifnet *ifp = sc->sc_ifp;
1391         struct ieee80211com *ic = ifp->if_l2com;
1392         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1393
1394         device_printf(sc->sc_dev, "firmware error\n");
1395         if (vap != NULL) {
1396                 IPW_UNLOCK(sc);
1397                 ieee80211_cancel_scan(vap);
1398                 IPW_LOCK(sc);
1399         }
1400         ieee80211_runtask(ic, &sc->sc_init_task);
1401 }
1402
1403 static void
1404 ipw_intr(void *arg)
1405 {
1406         struct ipw_softc *sc = arg;
1407         uint32_t r;
1408
1409         IPW_LOCK(sc);
1410
1411         r = CSR_READ_4(sc, IPW_CSR_INTR);
1412         if (r == 0 || r == 0xffffffff)
1413                 goto done;
1414
1415         /* disable interrupts */
1416         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1417
1418         /* acknowledge all interrupts */
1419         CSR_WRITE_4(sc, IPW_CSR_INTR, r);
1420
1421         if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) {
1422                 ipw_fatal_error_intr(sc);
1423                 goto done;
1424         }
1425
1426         if (r & IPW_INTR_FW_INIT_DONE)
1427                 wakeup(sc);
1428
1429         if (r & IPW_INTR_RX_TRANSFER)
1430                 ipw_rx_intr(sc);
1431
1432         if (r & IPW_INTR_TX_TRANSFER)
1433                 ipw_tx_intr(sc);
1434
1435         /* re-enable interrupts */
1436         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1437 done:
1438         IPW_UNLOCK(sc);
1439 }
1440
1441 static void
1442 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1443 {
1444         if (error != 0)
1445                 return;
1446
1447         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1448
1449         *(bus_addr_t *)arg = segs[0].ds_addr;
1450 }
1451
1452 static const char *
1453 ipw_cmdname(int cmd)
1454 {
1455 #define N(a)    (sizeof(a) / sizeof(a[0]))
1456         static const struct {
1457                 int     cmd;
1458                 const char *name;
1459         } cmds[] = {
1460                 { IPW_CMD_ADD_MULTICAST,        "ADD_MULTICAST" },
1461                 { IPW_CMD_BROADCAST_SCAN,       "BROADCAST_SCAN" },
1462                 { IPW_CMD_DISABLE,              "DISABLE" },
1463                 { IPW_CMD_DISABLE_PHY,          "DISABLE_PHY" },
1464                 { IPW_CMD_ENABLE,               "ENABLE" },
1465                 { IPW_CMD_PREPARE_POWER_DOWN,   "PREPARE_POWER_DOWN" },
1466                 { IPW_CMD_SET_BASIC_TX_RATES,   "SET_BASIC_TX_RATES" },
1467                 { IPW_CMD_SET_BEACON_INTERVAL,  "SET_BEACON_INTERVAL" },
1468                 { IPW_CMD_SET_CHANNEL,          "SET_CHANNEL" },
1469                 { IPW_CMD_SET_CONFIGURATION,    "SET_CONFIGURATION" },
1470                 { IPW_CMD_SET_DESIRED_BSSID,    "SET_DESIRED_BSSID" },
1471                 { IPW_CMD_SET_ESSID,            "SET_ESSID" },
1472                 { IPW_CMD_SET_FRAG_THRESHOLD,   "SET_FRAG_THRESHOLD" },
1473                 { IPW_CMD_SET_MAC_ADDRESS,      "SET_MAC_ADDRESS" },
1474                 { IPW_CMD_SET_MANDATORY_BSSID,  "SET_MANDATORY_BSSID" },
1475                 { IPW_CMD_SET_MODE,             "SET_MODE" },
1476                 { IPW_CMD_SET_MSDU_TX_RATES,    "SET_MSDU_TX_RATES" },
1477                 { IPW_CMD_SET_POWER_MODE,       "SET_POWER_MODE" },
1478                 { IPW_CMD_SET_RTS_THRESHOLD,    "SET_RTS_THRESHOLD" },
1479                 { IPW_CMD_SET_SCAN_OPTIONS,     "SET_SCAN_OPTIONS" },
1480                 { IPW_CMD_SET_SECURITY_INFO,    "SET_SECURITY_INFO" },
1481                 { IPW_CMD_SET_TX_POWER_INDEX,   "SET_TX_POWER_INDEX" },
1482                 { IPW_CMD_SET_TX_RATES,         "SET_TX_RATES" },
1483                 { IPW_CMD_SET_WEP_FLAGS,        "SET_WEP_FLAGS" },
1484                 { IPW_CMD_SET_WEP_KEY,          "SET_WEP_KEY" },
1485                 { IPW_CMD_SET_WEP_KEY_INDEX,    "SET_WEP_KEY_INDEX" },
1486                 { IPW_CMD_SET_WPA_IE,           "SET_WPA_IE" },
1487
1488         };
1489         static char buf[12];
1490         int i;
1491
1492         for (i = 0; i < N(cmds); i++)
1493                 if (cmds[i].cmd == cmd)
1494                         return cmds[i].name;
1495         snprintf(buf, sizeof(buf), "%u", cmd);
1496         return buf;
1497 #undef N
1498 }
1499
1500 /*
1501  * Send a command to the firmware and wait for the acknowledgement.
1502  */
1503 static int
1504 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len)
1505 {
1506         struct ipw_soft_bd *sbd;
1507         bus_addr_t physaddr;
1508         int error;
1509
1510         IPW_LOCK_ASSERT(sc);
1511
1512         if (sc->flags & IPW_FLAG_BUSY) {
1513                 device_printf(sc->sc_dev, "%s: %s not sent, busy\n",
1514                         __func__, ipw_cmdname(type));
1515                 return EAGAIN;
1516         }
1517         sc->flags |= IPW_FLAG_BUSY;
1518
1519         sbd = &sc->stbd_list[sc->txcur];
1520
1521         error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd,
1522             sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0);
1523         if (error != 0) {
1524                 device_printf(sc->sc_dev, "could not map command DMA memory\n");
1525                 sc->flags &= ~IPW_FLAG_BUSY;
1526                 return error;
1527         }
1528
1529         sc->cmd.type = htole32(type);
1530         sc->cmd.subtype = 0;
1531         sc->cmd.len = htole32(len);
1532         sc->cmd.seq = 0;
1533         memcpy(sc->cmd.data, data, len);
1534
1535         sbd->type = IPW_SBD_TYPE_COMMAND;
1536         sbd->bd->physaddr = htole32(physaddr);
1537         sbd->bd->len = htole32(sizeof (struct ipw_cmd));
1538         sbd->bd->nfrag = 1;
1539         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND |
1540             IPW_BD_FLAG_TX_LAST_FRAGMENT;
1541
1542         bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE);
1543         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1544
1545 #ifdef IPW_DEBUG
1546         if (ipw_debug >= 4) {
1547                 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type,
1548                     0, 0, len);
1549                 /* Print the data buffer in the higher debug level */
1550                 if (ipw_debug >= 9 && len > 0) {
1551                         printf(" data: 0x");
1552                         for (int i = 1; i <= len; i++)
1553                                 printf("%1D", (u_char *)data + len - i, "");
1554                 }
1555                 printf("\n");
1556         }
1557 #endif
1558
1559         /* kick firmware */
1560         sc->txfree--;
1561         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1562         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1563
1564         /* wait at most one second for command to complete */
1565         error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz);
1566         if (error != 0) {
1567                 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n",
1568                     __func__, ipw_cmdname(type), error);
1569                 sc->flags &= ~IPW_FLAG_BUSY;
1570                 return (error);
1571         }
1572         return (0);
1573 }
1574
1575 static int
1576 ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni)
1577 {
1578         struct ipw_softc *sc = ifp->if_softc;
1579         struct ieee80211com *ic = ifp->if_l2com;
1580         struct ieee80211vap *vap = ni->ni_vap;
1581         struct ieee80211_frame *wh;
1582         struct ipw_soft_bd *sbd;
1583         struct ipw_soft_hdr *shdr;
1584         struct ipw_soft_buf *sbuf;
1585         struct ieee80211_key *k;
1586         struct mbuf *mnew;
1587         bus_dma_segment_t segs[IPW_MAX_NSEG];
1588         bus_addr_t physaddr;
1589         int nsegs, error, i;
1590
1591         wh = mtod(m0, struct ieee80211_frame *);
1592
1593         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1594                 k = ieee80211_crypto_encap(ni, m0);
1595                 if (k == NULL) {
1596                         m_freem(m0);
1597                         return ENOBUFS;
1598                 }
1599                 /* packet header may have moved, reset our local pointer */
1600                 wh = mtod(m0, struct ieee80211_frame *);
1601         }
1602
1603         if (ieee80211_radiotap_active_vap(vap)) {
1604                 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap;
1605
1606                 tap->wt_flags = 0;
1607
1608                 ieee80211_radiotap_tx(vap, m0);
1609         }
1610
1611         shdr = SLIST_FIRST(&sc->free_shdr);
1612         sbuf = SLIST_FIRST(&sc->free_sbuf);
1613         KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool"));
1614
1615         shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND);
1616         shdr->hdr.subtype = 0;
1617         shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_WEP) ? 1 : 0;
1618         shdr->hdr.encrypt = 0;
1619         shdr->hdr.keyidx = 0;
1620         shdr->hdr.keysz = 0;
1621         shdr->hdr.fragmentsz = 0;
1622         IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2);
1623         if (ic->ic_opmode == IEEE80211_M_STA)
1624                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3);
1625         else
1626                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1);
1627
1628         /* trim IEEE802.11 header */
1629         m_adj(m0, sizeof (struct ieee80211_frame));
1630
1631         error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs,
1632             &nsegs, 0);
1633         if (error != 0 && error != EFBIG) {
1634                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1635                     error);
1636                 m_freem(m0);
1637                 return error;
1638         }
1639         if (error != 0) {
1640                 mnew = m_defrag(m0, M_DONTWAIT);
1641                 if (mnew == NULL) {
1642                         device_printf(sc->sc_dev,
1643                             "could not defragment mbuf\n");
1644                         m_freem(m0);
1645                         return ENOBUFS;
1646                 }
1647                 m0 = mnew;
1648
1649                 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0,
1650                     segs, &nsegs, 0);
1651                 if (error != 0) {
1652                         device_printf(sc->sc_dev,
1653                             "could not map mbuf (error %d)\n", error);
1654                         m_freem(m0);
1655                         return error;
1656                 }
1657         }
1658
1659         error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr,
1660             sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0);
1661         if (error != 0) {
1662                 device_printf(sc->sc_dev, "could not map header DMA memory\n");
1663                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1664                 m_freem(m0);
1665                 return error;
1666         }
1667
1668         SLIST_REMOVE_HEAD(&sc->free_sbuf, next);
1669         SLIST_REMOVE_HEAD(&sc->free_shdr, next);
1670
1671         sbd = &sc->stbd_list[sc->txcur];
1672         sbd->type = IPW_SBD_TYPE_HEADER;
1673         sbd->priv = shdr;
1674         sbd->bd->physaddr = htole32(physaddr);
1675         sbd->bd->len = htole32(sizeof (struct ipw_hdr));
1676         sbd->bd->nfrag = 1 + nsegs;
1677         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 |
1678             IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1679
1680         DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n",
1681             shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted,
1682             shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr,
1683             ":"));
1684
1685         sc->txfree--;
1686         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1687
1688         sbuf->m = m0;
1689         sbuf->ni = ni;
1690
1691         for (i = 0; i < nsegs; i++) {
1692                 sbd = &sc->stbd_list[sc->txcur];
1693
1694                 sbd->bd->physaddr = htole32(segs[i].ds_addr);
1695                 sbd->bd->len = htole32(segs[i].ds_len);
1696                 sbd->bd->nfrag = 0;
1697                 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3;
1698                 if (i == nsegs - 1) {
1699                         sbd->type = IPW_SBD_TYPE_DATA;
1700                         sbd->priv = sbuf;
1701                         sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT;
1702                 } else {
1703                         sbd->type = IPW_SBD_TYPE_NOASSOC;
1704                         sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1705                 }
1706
1707                 DPRINTFN(5, ("sending fragment (%d)\n", i));
1708
1709                 sc->txfree--;
1710                 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1711         }
1712
1713         bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE);
1714         bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE);
1715         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1716
1717         /* kick firmware */
1718         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1719
1720         return 0;
1721 }
1722
1723 static int
1724 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1725         const struct ieee80211_bpf_params *params)
1726 {
1727         /* no support; just discard */
1728         m_freem(m);
1729         ieee80211_free_node(ni);
1730         return 0;
1731 }
1732
1733 static void
1734 ipw_start(struct ifnet *ifp)
1735 {
1736         struct ipw_softc *sc = ifp->if_softc;
1737
1738         IPW_LOCK(sc);
1739         ipw_start_locked(ifp);
1740         IPW_UNLOCK(sc);
1741 }
1742
1743 static void
1744 ipw_start_locked(struct ifnet *ifp)
1745 {
1746         struct ipw_softc *sc = ifp->if_softc;
1747         struct ieee80211_node *ni;
1748         struct mbuf *m;
1749
1750         IPW_LOCK_ASSERT(sc);
1751
1752         for (;;) {
1753                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1754                 if (m == NULL)
1755                         break;
1756                 if (sc->txfree < 1 + IPW_MAX_NSEG) {
1757                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
1758                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1759                         break;
1760                 }
1761                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1762                 if (ipw_tx_start(ifp, m, ni) != 0) {
1763                         ieee80211_free_node(ni);
1764                         ifp->if_oerrors++;
1765                         break;
1766                 }
1767                 /* start watchdog timer */
1768                 sc->sc_tx_timer = 5;
1769         }
1770 }
1771
1772 static void
1773 ipw_watchdog(void *arg)
1774 {
1775         struct ipw_softc *sc = arg;
1776         struct ifnet *ifp = sc->sc_ifp;
1777         struct ieee80211com *ic = ifp->if_l2com;
1778
1779         IPW_LOCK_ASSERT(sc);
1780
1781         if (sc->sc_tx_timer > 0) {
1782                 if (--sc->sc_tx_timer == 0) {
1783                         if_printf(ifp, "device timeout\n");
1784                         ifp->if_oerrors++;
1785                         taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1786                 }
1787         }
1788         if (sc->sc_scan_timer > 0) {
1789                 if (--sc->sc_scan_timer == 0) {
1790                         DPRINTFN(3, ("Scan timeout\n"));
1791                         /* End the scan */
1792                         if (sc->flags & IPW_FLAG_SCANNING) {
1793                                 IPW_UNLOCK(sc);
1794                                 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps));
1795                                 IPW_LOCK(sc);
1796                                 sc->flags &= ~IPW_FLAG_SCANNING;
1797                         }
1798                 }
1799         }
1800         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1801                 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
1802 }
1803
1804 static int
1805 ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1806 {
1807         struct ipw_softc *sc = ifp->if_softc;
1808         struct ieee80211com *ic = ifp->if_l2com;
1809         struct ifreq *ifr = (struct ifreq *) data;
1810         int error = 0, startall = 0;
1811
1812         switch (cmd) {
1813         case SIOCSIFFLAGS:
1814                 IPW_LOCK(sc);
1815                 if (ifp->if_flags & IFF_UP) {
1816                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1817                                 ipw_init_locked(sc);
1818                                 startall = 1;
1819                         }
1820                 } else {
1821                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1822                                 ipw_stop_locked(sc);
1823                 }
1824                 IPW_UNLOCK(sc);
1825                 if (startall)
1826                         ieee80211_start_all(ic);
1827                 break;
1828         case SIOCGIFMEDIA:
1829                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1830                 break;
1831         case SIOCGIFADDR:
1832                 error = ether_ioctl(ifp, cmd, data);
1833                 break;
1834         default:
1835                 error = EINVAL;
1836                 break;
1837         }
1838         return error;
1839 }
1840
1841 static void
1842 ipw_stop_master(struct ipw_softc *sc)
1843 {
1844         uint32_t tmp;
1845         int ntries;
1846
1847         /* disable interrupts */
1848         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1849
1850         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER);
1851         for (ntries = 0; ntries < 50; ntries++) {
1852                 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED)
1853                         break;
1854                 DELAY(10);
1855         }
1856         if (ntries == 50)
1857                 device_printf(sc->sc_dev, "timeout waiting for master\n");
1858
1859         tmp = CSR_READ_4(sc, IPW_CSR_RST);
1860         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET);
1861
1862         /* Clear all flags except the following */
1863         sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH;
1864 }
1865
1866 static int
1867 ipw_reset(struct ipw_softc *sc)
1868 {
1869         uint32_t tmp;
1870         int ntries;
1871
1872         ipw_stop_master(sc);
1873
1874         /* move adapter to D0 state */
1875         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1876         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1877
1878         /* wait for clock stabilization */
1879         for (ntries = 0; ntries < 1000; ntries++) {
1880                 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY)
1881                         break;
1882                 DELAY(200);
1883         }
1884         if (ntries == 1000)
1885                 return EIO;
1886
1887         tmp =  CSR_READ_4(sc, IPW_CSR_RST);
1888         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET);
1889
1890         DELAY(10);
1891
1892         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1893         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1894
1895         return 0;
1896 }
1897
1898 static int
1899 ipw_waitfordisable(struct ipw_softc *sc, int waitfor)
1900 {
1901         int ms = hz < 1000 ? 1 : hz/10;
1902         int i, error;
1903
1904         for (i = 0; i < 100; i++) {
1905                 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor)
1906                         return 0;
1907                 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms);
1908                 if (error == 0 || error != EWOULDBLOCK)
1909                         return 0;
1910         }
1911         DPRINTF(("%s: timeout waiting for %s\n",
1912                 __func__, waitfor ? "disable" : "enable"));
1913         return ETIMEDOUT;
1914 }
1915
1916 static int
1917 ipw_enable(struct ipw_softc *sc)
1918 {
1919         int error;
1920
1921         if ((sc->flags & IPW_FLAG_ENABLED) == 0) {
1922                 DPRINTF(("Enable adapter\n"));
1923                 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
1924                 if (error != 0)
1925                         return error;
1926                 error = ipw_waitfordisable(sc, 0);
1927                 if (error != 0)
1928                         return error;
1929                 sc->flags |= IPW_FLAG_ENABLED;
1930         }
1931         return 0;
1932 }
1933
1934 static int
1935 ipw_disable(struct ipw_softc *sc)
1936 {
1937         int error;
1938
1939         if (sc->flags & IPW_FLAG_ENABLED) {
1940                 DPRINTF(("Disable adapter\n"));
1941                 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0);
1942                 if (error != 0)
1943                         return error;
1944                 error = ipw_waitfordisable(sc, 1);
1945                 if (error != 0)
1946                         return error;
1947                 sc->flags &= ~IPW_FLAG_ENABLED;
1948         }
1949         return 0;
1950 }
1951
1952 /*
1953  * Upload the microcode to the device.
1954  */
1955 static int
1956 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size)
1957 {
1958         int ntries;
1959
1960         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
1961         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1962
1963         MEM_WRITE_2(sc, 0x220000, 0x0703);
1964         MEM_WRITE_2(sc, 0x220000, 0x0707);
1965
1966         MEM_WRITE_1(sc, 0x210014, 0x72);
1967         MEM_WRITE_1(sc, 0x210014, 0x72);
1968
1969         MEM_WRITE_1(sc, 0x210000, 0x40);
1970         MEM_WRITE_1(sc, 0x210000, 0x00);
1971         MEM_WRITE_1(sc, 0x210000, 0x40);
1972
1973         MEM_WRITE_MULTI_1(sc, 0x210010, uc, size);
1974
1975         MEM_WRITE_1(sc, 0x210000, 0x00);
1976         MEM_WRITE_1(sc, 0x210000, 0x00);
1977         MEM_WRITE_1(sc, 0x210000, 0x80);
1978
1979         MEM_WRITE_2(sc, 0x220000, 0x0703);
1980         MEM_WRITE_2(sc, 0x220000, 0x0707);
1981
1982         MEM_WRITE_1(sc, 0x210014, 0x72);
1983         MEM_WRITE_1(sc, 0x210014, 0x72);
1984
1985         MEM_WRITE_1(sc, 0x210000, 0x00);
1986         MEM_WRITE_1(sc, 0x210000, 0x80);
1987
1988         for (ntries = 0; ntries < 10; ntries++) {
1989                 if (MEM_READ_1(sc, 0x210000) & 1)
1990                         break;
1991                 DELAY(10);
1992         }
1993         if (ntries == 10) {
1994                 device_printf(sc->sc_dev,
1995                     "timeout waiting for ucode to initialize\n");
1996                 return EIO;
1997         }
1998
1999         MEM_WRITE_4(sc, 0x3000e0, 0);
2000
2001         return 0;
2002 }
2003
2004 /* set of macros to handle unaligned little endian data in firmware image */
2005 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2006 #define GETLE16(p) ((p)[0] | (p)[1] << 8)
2007 static int
2008 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size)
2009 {
2010         const uint8_t *p, *end;
2011         uint32_t tmp, dst;
2012         uint16_t len;
2013         int error;
2014
2015         p = fw;
2016         end = fw + size;
2017         while (p < end) {
2018                 dst = GETLE32(p); p += 4;
2019                 len = GETLE16(p); p += 2;
2020
2021                 ipw_write_mem_1(sc, dst, p, len);
2022                 p += len;
2023         }
2024
2025         CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK |
2026             IPW_IO_LED_OFF);
2027
2028         /* enable interrupts */
2029         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
2030
2031         /* kick the firmware */
2032         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
2033
2034         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
2035         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY);
2036
2037         /* wait at most one second for firmware initialization to complete */
2038         if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) {
2039                 device_printf(sc->sc_dev, "timeout waiting for firmware "
2040                     "initialization to complete\n");
2041                 return error;
2042         }
2043
2044         tmp = CSR_READ_4(sc, IPW_CSR_IO);
2045         CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK |
2046             IPW_IO_GPIO3_MASK);
2047
2048         return 0;
2049 }
2050
2051 static int
2052 ipw_setwepkeys(struct ipw_softc *sc)
2053 {
2054         struct ifnet *ifp = sc->sc_ifp;
2055         struct ieee80211com *ic = ifp->if_l2com;
2056         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2057         struct ipw_wep_key wepkey;
2058         struct ieee80211_key *wk;
2059         int error, i;
2060
2061         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2062                 wk = &vap->iv_nw_keys[i];
2063
2064                 if (wk->wk_cipher == NULL ||
2065                     wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP)
2066                         continue;
2067
2068                 wepkey.idx = i;
2069                 wepkey.len = wk->wk_keylen;
2070                 memset(wepkey.key, 0, sizeof wepkey.key);
2071                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2072                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2073                     wepkey.len));
2074                 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey,
2075                     sizeof wepkey);
2076                 if (error != 0)
2077                         return error;
2078         }
2079         return 0;
2080 }
2081
2082 static int
2083 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen)
2084 {
2085         struct ipw_wpa_ie wpaie;
2086
2087         memset(&wpaie, 0, sizeof(wpaie));
2088         wpaie.len = htole32(ielen);
2089         /* XXX verify length */
2090         memcpy(&wpaie.ie, ie, ielen);
2091         DPRINTF(("Setting WPA IE\n"));
2092         return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie));
2093 }
2094
2095 static int
2096 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid)
2097 {
2098         static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
2099
2100         if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) {
2101                 DPRINTF(("Setting mandatory BSSID to null\n"));
2102                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0);
2103         } else {
2104                 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":"));
2105                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID,
2106                         bssid, IEEE80211_ADDR_LEN);
2107         }
2108 }
2109
2110 static int
2111 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen)
2112 {
2113         if (ssidlen == 0) {
2114                 /*
2115                  * A bug in the firmware breaks the ``don't associate''
2116                  * bit in the scan options command.  To compensate for
2117                  * this install a bogus ssid when no ssid is specified
2118                  * so the firmware won't try to associate.
2119                  */
2120                 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n"));
2121                 return ipw_cmd(sc, IPW_CMD_SET_ESSID,
2122                         "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27"
2123                         "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31"
2124                         "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b"
2125                         "\x3c\x3d", IEEE80211_NWID_LEN);
2126         } else {
2127 #ifdef IPW_DEBUG
2128                 if (ipw_debug > 0) {
2129                         printf("Setting ESSID to ");
2130                         ieee80211_print_essid(ssid, ssidlen);
2131                         printf("\n");
2132                 }
2133 #endif
2134                 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen);
2135         }
2136 }
2137
2138 static int
2139 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags)
2140 {
2141         struct ipw_scan_options opts;
2142
2143         DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags));
2144         opts.channels = htole32(chanmask);
2145         opts.flags = htole32(flags);
2146         return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts));
2147 }
2148
2149 static int
2150 ipw_scan(struct ipw_softc *sc)
2151 {
2152         uint32_t params;
2153         int error;
2154
2155         DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags));
2156
2157         if (sc->flags & IPW_FLAG_SCANNING)
2158                 return (EBUSY);
2159         sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK;
2160
2161         /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */
2162         error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE);
2163         if (error != 0)
2164                 goto done;
2165
2166         /*
2167          * Setup null/bogus ssid so firmware doesn't use any previous
2168          * ssid to try and associate.  This is because the ``don't
2169          * associate'' option bit is broken (sigh).
2170          */
2171         error = ipw_setssid(sc, NULL, 0);
2172         if (error != 0)
2173                 goto done;
2174
2175         /*
2176          * NB: the adapter may be disabled on association lost;
2177          *     if so just re-enable it to kick off scanning.
2178          */
2179         DPRINTF(("Starting scan\n"));
2180         sc->sc_scan_timer = 3;
2181         if (sc->flags & IPW_FLAG_ENABLED) {
2182                 params = 0;                             /* XXX? */
2183                 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN,
2184                                 &params, sizeof(params));
2185         } else
2186                 error = ipw_enable(sc);
2187 done:
2188         if (error != 0) {
2189                 DPRINTF(("Scan failed\n"));
2190                 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK);
2191         }
2192         return (error);
2193 }
2194
2195 static int
2196 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan)
2197 {
2198         struct ifnet *ifp = sc->sc_ifp;
2199         struct ieee80211com *ic = ifp->if_l2com;
2200         uint32_t data;
2201         int error;
2202
2203         data = htole32(ieee80211_chan2ieee(ic, chan));
2204         DPRINTF(("Setting channel to %u\n", le32toh(data)));
2205         error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data);
2206         if (error == 0)
2207                 ipw_setcurchan(sc, chan);
2208         return error;
2209 }
2210
2211 static void
2212 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2213 {
2214         struct ifnet *ifp = vap->iv_ic->ic_ifp;
2215         struct ipw_softc *sc = ifp->if_softc;
2216         struct ieee80211_node *ni = vap->iv_bss;
2217         struct ipw_security security;
2218         uint32_t data;
2219         int error;
2220
2221         IPW_LOCK(sc);
2222         error = ipw_disable(sc);
2223         if (error != 0)
2224                 goto done;
2225
2226         memset(&security, 0, sizeof security);
2227         security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ?
2228             IPW_AUTH_SHARED : IPW_AUTH_OPEN;
2229         security.ciphers = htole32(IPW_CIPHER_NONE);
2230         DPRINTF(("Setting authmode to %u\n", security.authmode));
2231         error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security,
2232             sizeof security);
2233         if (error != 0)
2234                 goto done;
2235
2236         data = htole32(vap->iv_rtsthreshold);
2237         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2238         error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2239         if (error != 0)
2240                 goto done;
2241
2242         data = htole32(vap->iv_fragthreshold);
2243         DPRINTF(("Setting frag threshold to %u\n", le32toh(data)));
2244         error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2245         if (error != 0)
2246                 goto done;
2247
2248         if (vap->iv_flags & IEEE80211_F_PRIVACY) {
2249                 error = ipw_setwepkeys(sc);
2250                 if (error != 0)
2251                         goto done;
2252
2253                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) {
2254                         data = htole32(vap->iv_def_txkey);
2255                         DPRINTF(("Setting wep tx key index to %u\n",
2256                                 le32toh(data)));
2257                         error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data,
2258                             sizeof data);
2259                         if (error != 0)
2260                                 goto done;
2261                 }
2262         }
2263
2264         data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0);
2265         DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data)));
2266         error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data);
2267         if (error != 0)
2268                 goto done;
2269
2270         error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen);
2271         if (error != 0)
2272                 goto done;
2273
2274         error = ipw_setbssid(sc, ni->ni_bssid);
2275         if (error != 0)
2276                 goto done;
2277
2278         if (vap->iv_appie_wpa != NULL) {
2279                 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2280                 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len);
2281                 if (error != 0)
2282                         goto done;
2283         }
2284         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2285                 error = ipw_setchannel(sc, ni->ni_chan);
2286                 if (error != 0)
2287                         goto done;
2288         }
2289
2290         /* lock scan to ap's channel and enable associate */
2291         error = ipw_setscanopts(sc,
2292             1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0);
2293         if (error != 0)
2294                 goto done;
2295
2296         error = ipw_enable(sc);         /* finally, enable adapter */
2297         if (error == 0)
2298                 sc->flags |= IPW_FLAG_ASSOCIATING;
2299 done:
2300         IPW_UNLOCK(sc);
2301 }
2302
2303 static void
2304 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2305 {
2306         struct ifnet *ifp = vap->iv_ic->ic_ifp;
2307         struct ieee80211_node *ni = vap->iv_bss;
2308         struct ipw_softc *sc = ifp->if_softc;
2309
2310         IPW_LOCK(sc);
2311         DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":"));
2312         /*
2313          * NB: don't try to do this if ipw_stop_master has
2314          *     shutdown the firmware and disabled interrupts.
2315          */
2316         if (sc->flags & IPW_FLAG_FW_INITED) {
2317                 sc->flags &= ~IPW_FLAG_ASSOCIATED;
2318                 /*
2319                  * NB: firmware currently ignores bssid parameter, but
2320                  *     supply it in case this changes (follow linux driver).
2321                  */
2322                 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE,
2323                         ni->ni_bssid, IEEE80211_ADDR_LEN);
2324         }
2325         IPW_UNLOCK(sc);
2326 }
2327
2328 /*
2329  * Handler for sc_init_task.  This is a simple wrapper around ipw_init().
2330  * It is called on firmware panics or on watchdog timeouts.
2331  */
2332 static void
2333 ipw_init_task(void *context, int pending)
2334 {
2335         ipw_init(context);
2336 }
2337
2338 static void
2339 ipw_init(void *priv)
2340 {
2341         struct ipw_softc *sc = priv;
2342         struct ifnet *ifp = sc->sc_ifp;
2343         struct ieee80211com *ic = ifp->if_l2com;
2344
2345         IPW_LOCK(sc);
2346         ipw_init_locked(sc);
2347         IPW_UNLOCK(sc);
2348
2349         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2350                 ieee80211_start_all(ic);                /* start all vap's */
2351 }
2352
2353 static void
2354 ipw_init_locked(struct ipw_softc *sc)
2355 {
2356         struct ifnet *ifp = sc->sc_ifp;
2357         struct ieee80211com *ic = ifp->if_l2com;
2358         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2359         const struct firmware *fp;
2360         const struct ipw_firmware_hdr *hdr;
2361         const char *fw;
2362
2363         IPW_LOCK_ASSERT(sc);
2364
2365         DPRINTF(("%s: state %s flags 0x%x\n", __func__,
2366                 ieee80211_state_name[vap->iv_state], sc->flags));
2367
2368         /*
2369          * Avoid re-entrant calls.  We need to release the mutex in ipw_init()
2370          * when loading the firmware and we don't want to be called during this
2371          * operation.
2372          */
2373         if (sc->flags & IPW_FLAG_INIT_LOCKED)
2374                 return;
2375         sc->flags |= IPW_FLAG_INIT_LOCKED;
2376
2377         ipw_stop_locked(sc);
2378
2379         if (ipw_reset(sc) != 0) {
2380                 device_printf(sc->sc_dev, "could not reset adapter\n");
2381                 goto fail;
2382         }
2383
2384         if (sc->sc_firmware == NULL) {
2385                 device_printf(sc->sc_dev, "no firmware\n");
2386                 goto fail;
2387         }
2388         /* NB: consistency already checked on load */
2389         fp = sc->sc_firmware;
2390         hdr = (const struct ipw_firmware_hdr *)fp->data;
2391
2392         DPRINTF(("Loading firmware image '%s'\n", fp->name));
2393         fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz);
2394         if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) {
2395                 device_printf(sc->sc_dev, "could not load microcode\n");
2396                 goto fail;
2397         }
2398
2399         ipw_stop_master(sc);
2400
2401         /*
2402          * Setup tx, rx and status rings.
2403          */
2404         sc->txold = IPW_NTBD - 1;
2405         sc->txcur = 0;
2406         sc->txfree = IPW_NTBD - 2;
2407         sc->rxcur = IPW_NRBD - 1;
2408
2409         CSR_WRITE_4(sc, IPW_CSR_TX_BASE,  sc->tbd_phys);
2410         CSR_WRITE_4(sc, IPW_CSR_TX_SIZE,  IPW_NTBD);
2411         CSR_WRITE_4(sc, IPW_CSR_TX_READ,  0);
2412         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
2413
2414         CSR_WRITE_4(sc, IPW_CSR_RX_BASE,  sc->rbd_phys);
2415         CSR_WRITE_4(sc, IPW_CSR_RX_SIZE,  IPW_NRBD);
2416         CSR_WRITE_4(sc, IPW_CSR_RX_READ,  0);
2417         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
2418
2419         CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys);
2420
2421         fw = (const char *)fp->data + sizeof *hdr;
2422         if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) {
2423                 device_printf(sc->sc_dev, "could not load firmware\n");
2424                 goto fail;
2425         }
2426
2427         sc->flags |= IPW_FLAG_FW_INITED;
2428
2429         /* retrieve information tables base addresses */
2430         sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE);
2431         sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE);
2432
2433         ipw_write_table1(sc, IPW_INFO_LOCK, 0);
2434
2435         if (ipw_config(sc) != 0) {
2436                 device_printf(sc->sc_dev, "device configuration failed\n");
2437                 goto fail;
2438         }
2439
2440         callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
2441         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2442         ifp->if_drv_flags |= IFF_DRV_RUNNING;
2443
2444         sc->flags &=~ IPW_FLAG_INIT_LOCKED;
2445         return;
2446
2447 fail:
2448         ipw_stop_locked(sc);
2449         sc->flags &=~ IPW_FLAG_INIT_LOCKED;
2450 }
2451
2452 static int
2453 ipw_config(struct ipw_softc *sc)
2454 {
2455         struct ifnet *ifp = sc->sc_ifp;
2456         struct ieee80211com *ic = ifp->if_l2com;
2457         struct ipw_configuration config;
2458         uint32_t data;
2459         int error;
2460
2461         error = ipw_disable(sc);
2462         if (error != 0)
2463                 return error;
2464
2465         switch (ic->ic_opmode) {
2466         case IEEE80211_M_STA:
2467         case IEEE80211_M_HOSTAP:
2468         case IEEE80211_M_WDS:           /* XXX */
2469                 data = htole32(IPW_MODE_BSS);
2470                 break;
2471         case IEEE80211_M_IBSS:
2472         case IEEE80211_M_AHDEMO:
2473                 data = htole32(IPW_MODE_IBSS);
2474                 break;
2475         case IEEE80211_M_MONITOR:
2476                 data = htole32(IPW_MODE_MONITOR);
2477                 break;
2478         default:
2479                 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
2480                 return EINVAL;
2481         }
2482         DPRINTF(("Setting mode to %u\n", le32toh(data)));
2483         error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data);
2484         if (error != 0)
2485                 return error;
2486
2487         if (ic->ic_opmode == IEEE80211_M_IBSS ||
2488             ic->ic_opmode == IEEE80211_M_MONITOR) {
2489                 error = ipw_setchannel(sc, ic->ic_curchan);
2490                 if (error != 0)
2491                         return error;
2492         }
2493
2494         if (ic->ic_opmode == IEEE80211_M_MONITOR)
2495                 return ipw_enable(sc);
2496
2497         config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK |
2498             IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE);
2499         if (ic->ic_opmode == IEEE80211_M_IBSS)
2500                 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START);
2501         if (ifp->if_flags & IFF_PROMISC)
2502                 config.flags |= htole32(IPW_CFG_PROMISCUOUS);
2503         config.bss_chan = htole32(0x3fff); /* channels 1-14 */
2504         config.ibss_chan = htole32(0x7ff); /* channels 1-11 */
2505         DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags)));
2506         error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config);
2507         if (error != 0)
2508                 return error;
2509
2510         data = htole32(0xf); /* 1, 2, 5.5, 11 */
2511         DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data)));
2512         error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data);
2513         if (error != 0)
2514                 return error;
2515
2516         /* Use the same rate set */
2517         DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data)));
2518         error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data);
2519         if (error != 0)
2520                 return error;
2521
2522         /* Use the same rate set */
2523         DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data)));
2524         error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data);
2525         if (error != 0)
2526                 return error;
2527
2528         data = htole32(IPW_POWER_MODE_CAM);
2529         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2530         error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data);
2531         if (error != 0)
2532                 return error;
2533
2534         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2535                 data = htole32(32); /* default value */
2536                 DPRINTF(("Setting tx power index to %u\n", le32toh(data)));
2537                 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data,
2538                     sizeof data);
2539                 if (error != 0)
2540                         return error;
2541         }
2542
2543         return 0;
2544 }
2545
2546 static void
2547 ipw_stop(void *priv)
2548 {
2549         struct ipw_softc *sc = priv;
2550
2551         IPW_LOCK(sc);
2552         ipw_stop_locked(sc);
2553         IPW_UNLOCK(sc);
2554 }
2555
2556 static void
2557 ipw_stop_locked(struct ipw_softc *sc)
2558 {
2559         struct ifnet *ifp = sc->sc_ifp;
2560         int i;
2561
2562         IPW_LOCK_ASSERT(sc);
2563
2564         callout_stop(&sc->sc_wdtimer);
2565         ipw_stop_master(sc);
2566
2567         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET);
2568
2569         /*
2570          * Release tx buffers.
2571          */
2572         for (i = 0; i < IPW_NTBD; i++)
2573                 ipw_release_sbd(sc, &sc->stbd_list[i]);
2574
2575         sc->sc_tx_timer = 0;
2576         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2577 }
2578
2579 static int
2580 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)
2581 {
2582         struct ipw_softc *sc = arg1;
2583         uint32_t i, size, buf[256];
2584
2585         memset(buf, 0, sizeof buf);
2586
2587         if (!(sc->flags & IPW_FLAG_FW_INITED))
2588                 return SYSCTL_OUT(req, buf, sizeof buf);
2589
2590         CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base);
2591
2592         size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256);
2593         for (i = 1; i < size; i++)
2594                 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA));
2595
2596         return SYSCTL_OUT(req, buf, size);
2597 }
2598
2599 static int
2600 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)
2601 {
2602         struct ipw_softc *sc = arg1;
2603         int val;
2604
2605         val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) &&
2606                 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED));
2607
2608         return SYSCTL_OUT(req, &val, sizeof val);
2609 }
2610
2611 static uint32_t
2612 ipw_read_table1(struct ipw_softc *sc, uint32_t off)
2613 {
2614         return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off));
2615 }
2616
2617 static void
2618 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info)
2619 {
2620         MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info);
2621 }
2622
2623 #if 0
2624 static int
2625 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len)
2626 {
2627         uint32_t addr, info;
2628         uint16_t count, size;
2629         uint32_t total;
2630
2631         /* addr[4] + count[2] + size[2] */
2632         addr = MEM_READ_4(sc, sc->table2_base + off);
2633         info = MEM_READ_4(sc, sc->table2_base + off + 4);
2634
2635         count = info >> 16;
2636         size = info & 0xffff;
2637         total = count * size;
2638
2639         if (total > *len) {
2640                 *len = total;
2641                 return EINVAL;
2642         }
2643
2644         *len = total;
2645         ipw_read_mem_1(sc, addr, buf, total);
2646
2647         return 0;
2648 }
2649
2650 static void
2651 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2652     bus_size_t count)
2653 {
2654         for (; count > 0; offset++, datap++, count--) {
2655                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2656                 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3));
2657         }
2658 }
2659 #endif
2660
2661 static void
2662 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap,
2663     bus_size_t count)
2664 {
2665         for (; count > 0; offset++, datap++, count--) {
2666                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2667                 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap);
2668         }
2669 }
2670
2671 static void
2672 ipw_scan_start(struct ieee80211com *ic)
2673 {
2674         struct ifnet *ifp = ic->ic_ifp;
2675         struct ipw_softc *sc = ifp->if_softc;
2676
2677         IPW_LOCK(sc);
2678         ipw_scan(sc);
2679         IPW_UNLOCK(sc);
2680 }
2681
2682 static void
2683 ipw_set_channel(struct ieee80211com *ic)
2684 {
2685         struct ifnet *ifp = ic->ic_ifp;
2686         struct ipw_softc *sc = ifp->if_softc;
2687
2688         IPW_LOCK(sc);
2689         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2690                 ipw_disable(sc);
2691                 ipw_setchannel(sc, ic->ic_curchan);
2692                 ipw_enable(sc);
2693         }
2694         IPW_UNLOCK(sc);
2695 }
2696
2697 static void
2698 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
2699 {
2700         /* NB: all channels are scanned at once */
2701 }
2702
2703 static void
2704 ipw_scan_mindwell(struct ieee80211_scan_state *ss)
2705 {
2706         /* NB: don't try to abort scan; wait for firmware to finish */
2707 }
2708
2709 static void
2710 ipw_scan_end(struct ieee80211com *ic)
2711 {
2712         struct ifnet *ifp = ic->ic_ifp;
2713         struct ipw_softc *sc = ifp->if_softc;
2714
2715         IPW_LOCK(sc);
2716         sc->flags &= ~IPW_FLAG_SCANNING;
2717         IPW_UNLOCK(sc);
2718 }