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 static int
 203 ipw_probe(device_t dev)
 204 {
 205         const struct ipw_ident *ident;
 206
 207         for (ident = ipw_ident_table; ident->name != NULL; ident++) {
 208                 if (pci_get_vendor(dev) == ident->vendor &&
 209                     pci_get_device(dev) == ident->device) {
 210                         device_set_desc(dev, ident->name);
 211                         return 0;
 212                 }
 213         }
 214         return ENXIO;
 215 }
 216
 217 /* Base Address Register */
 218 #define IPW_PCI_BAR0    0x10
 219
 220 static int
 221 ipw_attach(device_t dev)
 222 {
 223         struct ipw_softc *sc = device_get_softc(dev);
 224         struct ifnet *ifp;
 225         struct ieee80211com *ic;
 226         struct ieee80211_channel *c;
 227         uint16_t val;
 228         int error, i;
 229         uint8_t macaddr[IEEE80211_ADDR_LEN];
 230
 231         sc->sc_dev = dev;
 232
 233         mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
 234             MTX_DEF | MTX_RECURSE);
 235
 236         TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc);
 237         callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
 238
 239         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 240                 device_printf(dev, "chip is in D%d power mode "
 241                     "-- setting to D0\n", pci_get_powerstate(dev));
 242                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 243         }
 244
 245         pci_write_config(dev, 0x41, 0, 1);
 246
 247         /* enable bus-mastering */
 248         pci_enable_busmaster(dev);
 249
 250         sc->mem_rid = IPW_PCI_BAR0;
 251         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
 252             RF_ACTIVE);
 253         if (sc->mem == NULL) {
 254                 device_printf(dev, "could not allocate memory resource\n");
 255                 goto fail;
 256         }
 257
 258         sc->sc_st = rman_get_bustag(sc->mem);
 259         sc->sc_sh = rman_get_bushandle(sc->mem);
 260
 261         sc->irq_rid = 0;
 262         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
 263             RF_ACTIVE | RF_SHAREABLE);
 264         if (sc->irq == NULL) {
 265                 device_printf(dev, "could not allocate interrupt resource\n");
 266                 goto fail1;
 267         }
 268
 269         if (ipw_reset(sc) != 0) {
 270                 device_printf(dev, "could not reset adapter\n");
 271                 goto fail2;
 272         }
 273
 274         if (ipw_dma_alloc(sc) != 0) {
 275                 device_printf(dev, "could not allocate DMA resources\n");
 276                 goto fail2;
 277         }
 278
 279         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 280         if (ifp == NULL) {
 281                 device_printf(dev, "can not if_alloc()\n");
 282                 goto fail3;
 283         }
 284         ic = ifp->if_l2com;
 285
 286         ifp->if_softc = sc;
 287         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 288         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 289         ifp->if_init = ipw_init;
 290         ifp->if_ioctl = ipw_ioctl;
 291         ifp->if_start = ipw_start;
 292         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 293         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 294         IFQ_SET_READY(&ifp->if_snd);
 295
 296         ic->ic_ifp = ifp;
 297         ic->ic_opmode = IEEE80211_M_STA;
 298         ic->ic_phytype = IEEE80211_T_DS;
 299
 300         /* set device capabilities */
 301         ic->ic_caps =
 302                   IEEE80211_C_STA               /* station mode supported */
 303                 | IEEE80211_C_IBSS              /* IBSS mode supported */
 304                 | IEEE80211_C_MONITOR           /* monitor mode supported */
 305                 | IEEE80211_C_PMGT              /* power save supported */
 306                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 307                 | IEEE80211_C_WPA               /* 802.11i supported */
 308                 ;
 309
 310         /* read MAC address from EEPROM */
 311         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0);
 312         macaddr[0] = val >> 8;
 313         macaddr[1] = val & 0xff;
 314         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1);
 315         macaddr[2] = val >> 8;
 316         macaddr[3] = val & 0xff;
 317         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2);
 318         macaddr[4] = val >> 8;
 319         macaddr[5] = val & 0xff;
 320
 321         /* set supported .11b channels (read from EEPROM) */
 322         if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0)
 323                 val = 0x7ff; /* default to channels 1-11 */
 324         val <<= 1;
 325         for (i = 1; i < 16; i++) {
 326                 if (val & (1 << i)) {
 327                         c = &ic->ic_channels[ic->ic_nchans++];
 328                         c->ic_freq = ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 329                         c->ic_flags = IEEE80211_CHAN_B;
 330                         c->ic_ieee = i;
 331                 }
 332         }
 333
 334         /* check support for radio transmitter switch in EEPROM */
 335         if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8))
 336                 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH;
 337
 338         ieee80211_ifattach(ic, macaddr);
 339         ic->ic_scan_start = ipw_scan_start;
 340         ic->ic_scan_end = ipw_scan_end;
 341         ic->ic_set_channel = ipw_set_channel;
 342         ic->ic_scan_curchan = ipw_scan_curchan;
 343         ic->ic_scan_mindwell = ipw_scan_mindwell;
 344         ic->ic_raw_xmit = ipw_raw_xmit;
 345
 346         ic->ic_vap_create = ipw_vap_create;
 347         ic->ic_vap_delete = ipw_vap_delete;
 348
 349         ieee80211_radiotap_attach(ic,
 350             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 351                 IPW_TX_RADIOTAP_PRESENT,
 352             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 353                 IPW_RX_RADIOTAP_PRESENT);
 354
 355         /*
 356          * Add a few sysctl knobs.
 357          */
 358         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 359             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio",
 360             CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I",
 361             "radio transmitter switch state (0=off, 1=on)");
 362
 363         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 364             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
 365             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S",
 366             "statistics");
 367
 368         /*
 369          * Hook our interrupt after all initialization is complete.
 370          */
 371         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 372             NULL, ipw_intr, sc, &sc->sc_ih);
 373         if (error != 0) {
 374                 device_printf(dev, "could not set up interrupt\n");
 375                 goto fail4;
 376         }
 377
 378         if (bootverbose)
 379                 ieee80211_announce(ic);
 380
 381         return 0;
 382 fail4:
 383         if_free(ifp);
 384 fail3:
 385         ipw_release(sc);
 386 fail2:
 387         bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
 388 fail1:
 389         bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
 390 fail:
 391         mtx_destroy(&sc->sc_mtx);
 392         return ENXIO;
 393 }
 394
 395 static int
 396 ipw_detach(device_t dev)
 397 {
 398         struct ipw_softc *sc = device_get_softc(dev);
 399         struct ifnet *ifp = sc->sc_ifp;
 400         struct ieee80211com *ic = ifp->if_l2com;
 401
 402         ieee80211_draintask(ic, &sc->sc_init_task);
 403         ipw_stop(sc);
 404
 405         ieee80211_ifdetach(ic);
 406
 407         callout_drain(&sc->sc_wdtimer);
 408
 409         ipw_release(sc);
 410
 411         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 412         bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
 413
 414         bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
 415
 416         if_free(ifp);
 417
 418         if (sc->sc_firmware != NULL) {
 419                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 420                 sc->sc_firmware = NULL;
 421         }
 422
 423         mtx_destroy(&sc->sc_mtx);
 424
 425         return 0;
 426 }
 427
 428 static struct ieee80211vap *
 429 ipw_vap_create(struct ieee80211com *ic,
 430         const char name[IFNAMSIZ], int unit, int opmode, int flags,
 431         const uint8_t bssid[IEEE80211_ADDR_LEN],
 432         const uint8_t mac[IEEE80211_ADDR_LEN])
 433 {
 434         struct ifnet *ifp = ic->ic_ifp;
 435         struct ipw_softc *sc = ifp->if_softc;
 436         struct ipw_vap *ivp;
 437         struct ieee80211vap *vap;
 438         const struct firmware *fp;
 439         const struct ipw_firmware_hdr *hdr;
 440         const char *imagename;
 441
 442         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 443                 return NULL;
 444
 445         switch (opmode) {
 446         case IEEE80211_M_STA:
 447                 imagename = "ipw_bss";
 448                 break;
 449         case IEEE80211_M_IBSS:
 450                 imagename = "ipw_ibss";
 451                 break;
 452         case IEEE80211_M_MONITOR:
 453                 imagename = "ipw_monitor";
 454                 break;
 455         default:
 456                 return NULL;
 457         }
 458
 459         /*
 460          * Load firmware image using the firmware(9) subsystem.  Doing
 461          * this unlocked is ok since we're single-threaded by the
 462          * 802.11 layer.
 463          */
 464         if (sc->sc_firmware == NULL ||
 465             strcmp(sc->sc_firmware->name, imagename) != 0) {
 466                 if (sc->sc_firmware != NULL)
 467                         firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 468                 sc->sc_firmware = firmware_get(imagename);
 469         }
 470         if (sc->sc_firmware == NULL) {
 471                 device_printf(sc->sc_dev,
 472                     "could not load firmware image '%s'\n", imagename);
 473                 return NULL;
 474         }
 475         fp = sc->sc_firmware;
 476         if (fp->datasize < sizeof *hdr) {
 477                 device_printf(sc->sc_dev,
 478                     "firmware image too short %zu\n", fp->datasize);
 479                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 480                 sc->sc_firmware = NULL;
 481                 return NULL;
 482         }
 483         hdr = (const struct ipw_firmware_hdr *)fp->data;
 484         if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) +
 485             le32toh(hdr->ucodesz)) {
 486                 device_printf(sc->sc_dev,
 487                     "firmware image too short %zu\n", fp->datasize);
 488                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 489                 sc->sc_firmware = NULL;
 490                 return NULL;
 491         }
 492
 493         ivp = (struct ipw_vap *) malloc(sizeof(struct ipw_vap),
 494             M_80211_VAP, M_NOWAIT | M_ZERO);
 495         if (ivp == NULL)
 496                 return NULL;
 497         vap = &ivp->vap;
 498
 499         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
 500         /* override with driver methods */
 501         ivp->newstate = vap->iv_newstate;
 502         vap->iv_newstate = ipw_newstate;
 503
 504         /* complete setup */
 505         ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status);
 506         ic->ic_opmode = opmode;
 507         return vap;
 508 }
 509
 510 static void
 511 ipw_vap_delete(struct ieee80211vap *vap)
 512 {
 513         struct ipw_vap *ivp = IPW_VAP(vap);
 514
 515         ieee80211_vap_detach(vap);
 516         free(ivp, M_80211_VAP);
 517 }
 518
 519 static int
 520 ipw_dma_alloc(struct ipw_softc *sc)
 521 {
 522         struct ipw_soft_bd *sbd;
 523         struct ipw_soft_hdr *shdr;
 524         struct ipw_soft_buf *sbuf;
 525         bus_addr_t physaddr;
 526         int error, i;
 527
 528         /*
 529          * Allocate parent DMA tag for subsequent allocations.
 530          */
 531         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 532             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 533             BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED,
 534             BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat);
 535         if (error != 0) {
 536                 device_printf(sc->sc_dev, "could not create parent DMA tag\n");
 537                 goto fail;
 538         }
 539
 540         /*
 541          * Allocate and map tx ring.
 542          */
 543         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 544             BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL,
 545             NULL, &sc->tbd_dmat);
 546         if (error != 0) {
 547                 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
 548                 goto fail;
 549         }
 550
 551         error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list,
 552             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map);
 553         if (error != 0) {
 554                 device_printf(sc->sc_dev,
 555                     "could not allocate tx ring DMA memory\n");
 556                 goto fail;
 557         }
 558
 559         error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list,
 560             IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0);
 561         if (error != 0) {
 562                 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n");
 563                 goto fail;
 564         }
 565
 566         /*
 567          * Allocate and map rx ring.
 568          */
 569         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 570             BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL,
 571             NULL, &sc->rbd_dmat);
 572         if (error != 0) {
 573                 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n");
 574                 goto fail;
 575         }
 576
 577         error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list,
 578             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map);
 579         if (error != 0) {
 580                 device_printf(sc->sc_dev,
 581                     "could not allocate rx ring DMA memory\n");
 582                 goto fail;
 583         }
 584
 585         error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list,
 586             IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0);
 587         if (error != 0) {
 588                 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n");
 589                 goto fail;
 590         }
 591
 592         /*
 593          * Allocate and map status ring.
 594          */
 595         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 596             BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0,
 597             NULL, NULL, &sc->status_dmat);
 598         if (error != 0) {
 599                 device_printf(sc->sc_dev,
 600                     "could not create status ring DMA tag\n");
 601                 goto fail;
 602         }
 603
 604         error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list,
 605             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map);
 606         if (error != 0) {
 607                 device_printf(sc->sc_dev,
 608                     "could not allocate status ring DMA memory\n");
 609                 goto fail;
 610         }
 611
 612         error = bus_dmamap_load(sc->status_dmat, sc->status_map,
 613             sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys,
 614             0);
 615         if (error != 0) {
 616                 device_printf(sc->sc_dev,
 617                     "could not map status ring DMA memory\n");
 618                 goto fail;
 619         }
 620
 621         /*
 622          * Allocate command DMA map.
 623          */
 624         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 625             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1,
 626             sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat);
 627         if (error != 0) {
 628                 device_printf(sc->sc_dev, "could not create command DMA tag\n");
 629                 goto fail;
 630         }
 631
 632         error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map);
 633         if (error != 0) {
 634                 device_printf(sc->sc_dev,
 635                     "could not create command DMA map\n");
 636                 goto fail;
 637         }
 638
 639         /*
 640          * Allocate headers DMA maps.
 641          */
 642         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 643             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1,
 644             sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat);
 645         if (error != 0) {
 646                 device_printf(sc->sc_dev, "could not create header DMA tag\n");
 647                 goto fail;
 648         }
 649
 650         SLIST_INIT(&sc->free_shdr);
 651         for (i = 0; i < IPW_NDATA; i++) {
 652                 shdr = &sc->shdr_list[i];
 653                 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map);
 654                 if (error != 0) {
 655                         device_printf(sc->sc_dev,
 656                             "could not create header DMA map\n");
 657                         goto fail;
 658                 }
 659                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
 660         }
 661
 662         /*
 663          * Allocate tx buffers DMA maps.
 664          */
 665         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 666             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0,
 667             NULL, NULL, &sc->txbuf_dmat);
 668         if (error != 0) {
 669                 device_printf(sc->sc_dev, "could not create tx DMA tag\n");
 670                 goto fail;
 671         }
 672
 673         SLIST_INIT(&sc->free_sbuf);
 674         for (i = 0; i < IPW_NDATA; i++) {
 675                 sbuf = &sc->tx_sbuf_list[i];
 676                 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map);
 677                 if (error != 0) {
 678                         device_printf(sc->sc_dev,
 679                             "could not create tx DMA map\n");
 680                         goto fail;
 681                 }
 682                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
 683         }
 684
 685         /*
 686          * Initialize tx ring.
 687          */
 688         for (i = 0; i < IPW_NTBD; i++) {
 689                 sbd = &sc->stbd_list[i];
 690                 sbd->bd = &sc->tbd_list[i];
 691                 sbd->type = IPW_SBD_TYPE_NOASSOC;
 692         }
 693
 694         /*
 695          * Pre-allocate rx buffers and DMA maps.
 696          */
 697         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 698             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
 699             NULL, &sc->rxbuf_dmat);
 700         if (error != 0) {
 701                 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
 702                 goto fail;
 703         }
 704
 705         for (i = 0; i < IPW_NRBD; i++) {
 706                 sbd = &sc->srbd_list[i];
 707                 sbuf = &sc->rx_sbuf_list[i];
 708                 sbd->bd = &sc->rbd_list[i];
 709
 710                 sbuf->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
 711                 if (sbuf->m == NULL) {
 712                         device_printf(sc->sc_dev,
 713                             "could not allocate rx mbuf\n");
 714                         error = ENOMEM;
 715                         goto fail;
 716                 }
 717
 718                 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map);
 719                 if (error != 0) {
 720                         device_printf(sc->sc_dev,
 721                             "could not create rx DMA map\n");
 722                         goto fail;
 723                 }
 724
 725                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
 726                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
 727                     &physaddr, 0);
 728                 if (error != 0) {
 729                         device_printf(sc->sc_dev,
 730                             "could not map rx DMA memory\n");
 731                         goto fail;
 732                 }
 733
 734                 sbd->type = IPW_SBD_TYPE_DATA;
 735                 sbd->priv = sbuf;
 736                 sbd->bd->physaddr = htole32(physaddr);
 737                 sbd->bd->len = htole32(MCLBYTES);
 738         }
 739
 740         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
 741
 742         return 0;
 743
 744 fail:   ipw_release(sc);
 745         return error;
 746 }
 747
 748 static void
 749 ipw_release(struct ipw_softc *sc)
 750 {
 751         struct ipw_soft_buf *sbuf;
 752         int i;
 753
 754         if (sc->parent_dmat != NULL) {
 755                 bus_dma_tag_destroy(sc->parent_dmat);
 756         }
 757
 758         if (sc->tbd_dmat != NULL) {
 759                 if (sc->stbd_list != NULL) {
 760                         bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map);
 761                         bus_dmamem_free(sc->tbd_dmat, sc->tbd_list,
 762                             sc->tbd_map);
 763                 }
 764                 bus_dma_tag_destroy(sc->tbd_dmat);
 765         }
 766
 767         if (sc->rbd_dmat != NULL) {
 768                 if (sc->rbd_list != NULL) {
 769                         bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map);
 770                         bus_dmamem_free(sc->rbd_dmat, sc->rbd_list,
 771                             sc->rbd_map);
 772                 }
 773                 bus_dma_tag_destroy(sc->rbd_dmat);
 774         }
 775
 776         if (sc->status_dmat != NULL) {
 777                 if (sc->status_list != NULL) {
 778                         bus_dmamap_unload(sc->status_dmat, sc->status_map);
 779                         bus_dmamem_free(sc->status_dmat, sc->status_list,
 780                             sc->status_map);
 781                 }
 782                 bus_dma_tag_destroy(sc->status_dmat);
 783         }
 784
 785         for (i = 0; i < IPW_NTBD; i++)
 786                 ipw_release_sbd(sc, &sc->stbd_list[i]);
 787
 788         if (sc->cmd_dmat != NULL) {
 789                 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map);
 790                 bus_dma_tag_destroy(sc->cmd_dmat);
 791         }
 792
 793         if (sc->hdr_dmat != NULL) {
 794                 for (i = 0; i < IPW_NDATA; i++)
 795                         bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map);
 796                 bus_dma_tag_destroy(sc->hdr_dmat);
 797         }
 798
 799         if (sc->txbuf_dmat != NULL) {
 800                 for (i = 0; i < IPW_NDATA; i++) {
 801                         bus_dmamap_destroy(sc->txbuf_dmat,
 802                             sc->tx_sbuf_list[i].map);
 803                 }
 804                 bus_dma_tag_destroy(sc->txbuf_dmat);
 805         }
 806
 807         if (sc->rxbuf_dmat != NULL) {
 808                 for (i = 0; i < IPW_NRBD; i++) {
 809                         sbuf = &sc->rx_sbuf_list[i];
 810                         if (sbuf->m != NULL) {
 811                                 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map,
 812                                     BUS_DMASYNC_POSTREAD);
 813                                 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
 814                                 m_freem(sbuf->m);
 815                         }
 816                         bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map);
 817                 }
 818                 bus_dma_tag_destroy(sc->rxbuf_dmat);
 819         }
 820 }
 821
 822 static int
 823 ipw_shutdown(device_t dev)
 824 {
 825         struct ipw_softc *sc = device_get_softc(dev);
 826
 827         ipw_stop(sc);
 828
 829         return 0;
 830 }
 831
 832 static int
 833 ipw_suspend(device_t dev)
 834 {
 835         struct ipw_softc *sc = device_get_softc(dev);
 836         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
 837
 838         ieee80211_suspend_all(ic);
 839         return 0;
 840 }
 841
 842 static int
 843 ipw_resume(device_t dev)
 844 {
 845         struct ipw_softc *sc = device_get_softc(dev);
 846         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
 847
 848         pci_write_config(dev, 0x41, 0, 1);
 849
 850         ieee80211_resume_all(ic);
 851         return 0;
 852 }
 853
 854 static int
 855 ipw_cvtrate(int ipwrate)
 856 {
 857         switch (ipwrate) {
 858         case IPW_RATE_DS1:      return 2;
 859         case IPW_RATE_DS2:      return 4;
 860         case IPW_RATE_DS5:      return 11;
 861         case IPW_RATE_DS11:     return 22;
 862         }
 863         return 0;
 864 }
 865
 866 /*
 867  * The firmware automatically adapts the transmit speed. We report its current
 868  * value here.
 869  */
 870 static void
 871 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 872 {
 873         struct ieee80211vap *vap = ifp->if_softc;
 874         struct ieee80211com *ic = vap->iv_ic;
 875         struct ipw_softc *sc = ic->ic_ifp->if_softc;
 876
 877         /* read current transmission rate from adapter */
 878         vap->iv_bss->ni_txrate = ipw_cvtrate(
 879             ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf);
 880         ieee80211_media_status(ifp, imr);
 881 }
 882
 883 static int
 884 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 885 {
 886         struct ipw_vap *ivp = IPW_VAP(vap);
 887         struct ieee80211com *ic = vap->iv_ic;
 888         struct ifnet *ifp = ic->ic_ifp;
 889         struct ipw_softc *sc = ifp->if_softc;
 890         enum ieee80211_state ostate;
 891
 892         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
 893                 ieee80211_state_name[vap->iv_state],
 894                 ieee80211_state_name[nstate], sc->flags));
 895
 896         ostate = vap->iv_state;
 897         IEEE80211_UNLOCK(ic);
 898
 899         switch (nstate) {
 900         case IEEE80211_S_RUN:
 901                 if (ic->ic_opmode == IEEE80211_M_IBSS) {
 902                         /*
 903                          * XXX when joining an ibss network we are called
 904                          * with a SCAN -> RUN transition on scan complete.
 905                          * Use that to call ipw_assoc.  On completing the
 906                          * join we are then called again with an AUTH -> RUN
 907                          * transition and we want to do nothing.  This is
 908                          * all totally bogus and needs to be redone.
 909                          */
 910                         if (ostate == IEEE80211_S_SCAN)
 911                                 ipw_assoc(ic, vap);
 912                 }
 913                 break;
 914
 915         case IEEE80211_S_INIT:
 916                 if (sc->flags & IPW_FLAG_ASSOCIATED)
 917                         ipw_disassoc(ic, vap);
 918                 break;
 919
 920         case IEEE80211_S_AUTH:
 921                 /*
 922                  * Move to ASSOC state after the ipw_assoc() call.  Firmware
 923                  * takes care of authentication, after the call we'll receive
 924                  * only an assoc response which would otherwise be discared
 925                  * if we are still in AUTH state.
 926                  */
 927                 nstate = IEEE80211_S_ASSOC;
 928                 ipw_assoc(ic, vap);
 929                 break;
 930
 931         case IEEE80211_S_ASSOC:
 932                 /*
 933                  * If we are not transitioning from AUTH then resend the
 934                  * association request.
 935                  */
 936                 if (ostate != IEEE80211_S_AUTH)
 937                         ipw_assoc(ic, vap);
 938                 break;
 939
 940         default:
 941                 break;
 942         }
 943         IEEE80211_LOCK(ic);
 944         return ivp->newstate(vap, nstate, arg);
 945 }
 946
 947 /*
 948  * Read 16 bits at address 'addr' from the serial EEPROM.
 949  */
 950 static uint16_t
 951 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr)
 952 {
 953         uint32_t tmp;
 954         uint16_t val;
 955         int n;
 956
 957         /* clock C once before the first command */
 958         IPW_EEPROM_CTL(sc, 0);
 959         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 960         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 961         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 962
 963         /* write start bit (1) */
 964         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 965         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 966
 967         /* write READ opcode (10) */
 968         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 969         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 970         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 971         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 972
 973         /* write address A7-A0 */
 974         for (n = 7; n >= 0; n--) {
 975                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 976                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D));
 977                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 978                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C);
 979         }
 980
 981         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 982
 983         /* read data Q15-Q0 */
 984         val = 0;
 985         for (n = 15; n >= 0; n--) {
 986                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 987                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 988                 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL);
 989                 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n;
 990         }
 991
 992         IPW_EEPROM_CTL(sc, 0);
 993
 994         /* clear Chip Select and clock C */
 995         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 996         IPW_EEPROM_CTL(sc, 0);
 997         IPW_EEPROM_CTL(sc, IPW_EEPROM_C);
 998
 999         return le16toh(val);
1000 }
1001
1002 static void
1003 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
1004 {
1005         struct ipw_cmd *cmd;
1006
1007         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1008
1009         cmd = mtod(sbuf->m, struct ipw_cmd *);
1010
1011         DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n",
1012             ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type),
1013             le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len),
1014             le32toh(cmd->status)));
1015
1016         sc->flags &= ~IPW_FLAG_BUSY;
1017         wakeup(sc);
1018 }
1019
1020 static void
1021 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
1022 {
1023 #define IEEESTATE(vap)  ieee80211_state_name[vap->iv_state]
1024         struct ifnet *ifp = sc->sc_ifp;
1025         struct ieee80211com *ic = ifp->if_l2com;
1026         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1027         uint32_t state;
1028
1029         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1030
1031         state = le32toh(*mtod(sbuf->m, uint32_t *));
1032
1033         switch (state) {
1034         case IPW_STATE_ASSOCIATED:
1035                 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n",
1036                         IEEESTATE(vap), sc->flags));
1037                 /* XXX suppress state change in case the fw auto-associates */
1038                 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) {
1039                         DPRINTF(("Unexpected association (%s, flags 0x%x)\n",
1040                                 IEEESTATE(vap), sc->flags));
1041                         break;
1042                 }
1043                 sc->flags &= ~IPW_FLAG_ASSOCIATING;
1044                 sc->flags |= IPW_FLAG_ASSOCIATED;
1045                 break;
1046
1047         case IPW_STATE_SCANNING:
1048                 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n",
1049                         IEEESTATE(vap), sc->flags));
1050                 /*
1051                  * NB: Check driver state for association on assoc
1052                  * loss as the firmware will immediately start to
1053                  * scan and we would treat it as a beacon miss if
1054                  * we checked the 802.11 layer state.
1055                  */
1056                 if (sc->flags & IPW_FLAG_ASSOCIATED) {
1057                         IPW_UNLOCK(sc);
1058                         /* XXX probably need to issue disassoc to fw */
1059                         ieee80211_beacon_miss(ic);
1060                         IPW_LOCK(sc);
1061                 }
1062                 break;
1063
1064         case IPW_STATE_SCAN_COMPLETE:
1065                 /*
1066                  * XXX For some reason scan requests generate scan
1067                  * started + scan done events before any traffic is
1068                  * received (e.g. probe response frames).  We work
1069                  * around this by marking the HACK flag and skipping
1070                  * the first scan complete event.
1071                 */
1072                 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n",
1073                             IEEESTATE(vap), sc->flags));
1074                 if (sc->flags & IPW_FLAG_HACK) {
1075                         sc->flags &= ~IPW_FLAG_HACK;
1076                         break;
1077                 }
1078                 if (sc->flags & IPW_FLAG_SCANNING) {
1079                         IPW_UNLOCK(sc);
1080                         ieee80211_scan_done(vap);
1081                         IPW_LOCK(sc);
1082                         sc->flags &= ~IPW_FLAG_SCANNING;
1083                         sc->sc_scan_timer = 0;
1084                 }
1085                 break;
1086
1087         case IPW_STATE_ASSOCIATION_LOST:
1088                 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n",
1089                         IEEESTATE(vap), sc->flags));
1090                 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1091                 if (vap->iv_state == IEEE80211_S_RUN) {
1092                         IPW_UNLOCK(sc);
1093                         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1094                         IPW_LOCK(sc);
1095                 }
1096                 break;
1097
1098         case IPW_STATE_DISABLED:
1099                 /* XXX? is this right? */
1100                 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING |
1101                     IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1102                 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n",
1103                         IEEESTATE(vap), sc->flags));
1104                 break;
1105
1106         case IPW_STATE_RADIO_DISABLED:
1107                 device_printf(sc->sc_dev, "radio turned off\n");
1108                 ieee80211_notify_radio(ic, 0);
1109                 ipw_stop_locked(sc);
1110                 /* XXX start polling thread to detect radio on */
1111                 break;
1112
1113         default:
1114                 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n",
1115                         __func__, state, IEEESTATE(vap), sc->flags));
1116                 break;
1117         }
1118 #undef IEEESTATE
1119 }
1120
1121 /*
1122  * Set driver state for current channel.
1123  */
1124 static void
1125 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan)
1126 {
1127         struct ifnet *ifp = sc->sc_ifp;
1128         struct ieee80211com *ic = ifp->if_l2com;
1129
1130         ic->ic_curchan = chan;
1131         ieee80211_radiotap_chan_change(ic);
1132 }
1133
1134 /*
1135  * XXX: Hack to set the current channel to the value advertised in beacons or
1136  * probe responses. Only used during AP detection.
1137  */
1138 static void
1139 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m)
1140 {
1141         struct ifnet *ifp = sc->sc_ifp;
1142         struct ieee80211com *ic = ifp->if_l2com;
1143         struct ieee80211_channel *c;
1144         struct ieee80211_frame *wh;
1145         uint8_t subtype;
1146         uint8_t *frm, *efrm;
1147
1148         wh = mtod(m, struct ieee80211_frame *);
1149
1150         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
1151                 return;
1152
1153         subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1154
1155         if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1156             subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1157                 return;
1158
1159         /* XXX use ieee80211_parse_beacon */
1160         frm = (uint8_t *)(wh + 1);
1161         efrm = mtod(m, uint8_t *) + m->m_len;
1162
1163         frm += 12;      /* skip tstamp, bintval and capinfo fields */
1164         while (frm < efrm) {
1165                 if (*frm == IEEE80211_ELEMID_DSPARMS)
1166 #if IEEE80211_CHAN_MAX < 255
1167                 if (frm[2] <= IEEE80211_CHAN_MAX)
1168 #endif
1169                 {
1170                         DPRINTF(("Fixing channel to %d\n", frm[2]));
1171                         c = ieee80211_find_channel(ic,
1172                                 ieee80211_ieee2mhz(frm[2], 0),
1173                                 IEEE80211_CHAN_B);
1174                         if (c == NULL)
1175                                 c = &ic->ic_channels[0];
1176                         ipw_setcurchan(sc, c);
1177                 }
1178
1179                 frm += frm[1] + 2;
1180         }
1181 }
1182
1183 static void
1184 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status,
1185     struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf)
1186 {
1187         struct ifnet *ifp = sc->sc_ifp;
1188         struct ieee80211com *ic = ifp->if_l2com;
1189         struct mbuf *mnew, *m;
1190         struct ieee80211_node *ni;
1191         bus_addr_t physaddr;
1192         int error;
1193         int8_t rssi, nf;
1194
1195         DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len),
1196             status->rssi));
1197
1198         if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) ||
1199             le32toh(status->len) > MCLBYTES)
1200                 return;
1201
1202         /*
1203          * Try to allocate a new mbuf for this ring element and load it before
1204          * processing the current mbuf. If the ring element cannot be loaded,
1205          * drop the received packet and reuse the old mbuf. In the unlikely
1206          * case that the old mbuf can't be reloaded either, explicitly panic.
1207          */
1208         mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1209         if (mnew == NULL) {
1210                 ifp->if_ierrors++;
1211                 return;
1212         }
1213
1214         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1215         bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
1216
1217         error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *),
1218             MCLBYTES, ipw_dma_map_addr, &physaddr, 0);
1219         if (error != 0) {
1220                 m_freem(mnew);
1221
1222                 /* try to reload the old mbuf */
1223                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
1224                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
1225                     &physaddr, 0);
1226                 if (error != 0) {
1227                         /* very unlikely that it will fail... */
1228                         panic("%s: could not load old rx mbuf",
1229                             device_get_name(sc->sc_dev));
1230                 }
1231                 ifp->if_ierrors++;
1232                 return;
1233         }
1234
1235         /*
1236          * New mbuf successfully loaded, update Rx ring and continue
1237          * processing.
1238          */
1239         m = sbuf->m;
1240         sbuf->m = mnew;
1241         sbd->bd->physaddr = htole32(physaddr);
1242
1243         /* finalize mbuf */
1244         m->m_pkthdr.rcvif = ifp;
1245         m->m_pkthdr.len = m->m_len = le32toh(status->len);
1246
1247         rssi = status->rssi + IPW_RSSI_TO_DBM;
1248         nf = -95;
1249         if (ieee80211_radiotap_active(ic)) {
1250                 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap;
1251
1252                 tap->wr_flags = 0;
1253                 tap->wr_antsignal = rssi;
1254                 tap->wr_antnoise = nf;
1255         }
1256
1257         if (sc->flags & IPW_FLAG_SCANNING)
1258                 ipw_fix_channel(sc, m);
1259
1260         IPW_UNLOCK(sc);
1261         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1262         if (ni != NULL) {
1263                 (void) ieee80211_input(ni, m, rssi - nf, nf);
1264                 ieee80211_free_node(ni);
1265         } else
1266                 (void) ieee80211_input_all(ic, m, rssi - nf, nf);
1267         IPW_LOCK(sc);
1268
1269         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1270 }
1271
1272 static void
1273 ipw_rx_intr(struct ipw_softc *sc)
1274 {
1275         struct ipw_status *status;
1276         struct ipw_soft_bd *sbd;
1277         struct ipw_soft_buf *sbuf;
1278         uint32_t r, i;
1279
1280         if (!(sc->flags & IPW_FLAG_FW_INITED))
1281                 return;
1282
1283         r = CSR_READ_4(sc, IPW_CSR_RX_READ);
1284
1285         bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD);
1286
1287         for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) {
1288                 status = &sc->status_list[i];
1289                 sbd = &sc->srbd_list[i];
1290                 sbuf = sbd->priv;
1291
1292                 switch (le16toh(status->code) & 0xf) {
1293                 case IPW_STATUS_CODE_COMMAND:
1294                         ipw_rx_cmd_intr(sc, sbuf);
1295                         break;
1296
1297                 case IPW_STATUS_CODE_NEWSTATE:
1298                         ipw_rx_newstate_intr(sc, sbuf);
1299                         break;
1300
1301                 case IPW_STATUS_CODE_DATA_802_3:
1302                 case IPW_STATUS_CODE_DATA_802_11:
1303                         ipw_rx_data_intr(sc, status, sbd, sbuf);
1304                         break;
1305
1306                 case IPW_STATUS_CODE_NOTIFICATION:
1307                         DPRINTFN(2, ("notification status, len %u flags 0x%x\n",
1308                             le32toh(status->len), status->flags));
1309                         /* XXX maybe drive state machine AUTH->ASSOC? */
1310                         break;
1311
1312                 default:
1313                         device_printf(sc->sc_dev, "unexpected status code %u\n",
1314                             le16toh(status->code));
1315                 }
1316
1317                 /* firmware was killed, stop processing received frames */
1318                 if (!(sc->flags & IPW_FLAG_FW_INITED))
1319                         return;
1320
1321                 sbd->bd->flags = 0;
1322         }
1323
1324         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1325
1326         /* kick the firmware */
1327         sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1;
1328         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
1329 }
1330
1331 static void
1332 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd)
1333 {
1334         struct ipw_soft_hdr *shdr;
1335         struct ipw_soft_buf *sbuf;
1336
1337         switch (sbd->type) {
1338         case IPW_SBD_TYPE_COMMAND:
1339                 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map,
1340                     BUS_DMASYNC_POSTWRITE);
1341                 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map);
1342                 break;
1343
1344         case IPW_SBD_TYPE_HEADER:
1345                 shdr = sbd->priv;
1346                 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE);
1347                 bus_dmamap_unload(sc->hdr_dmat, shdr->map);
1348                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
1349                 break;
1350
1351         case IPW_SBD_TYPE_DATA:
1352                 sbuf = sbd->priv;
1353                 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map,
1354                     BUS_DMASYNC_POSTWRITE);
1355                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1356                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
1357
1358                 if (sbuf->m->m_flags & M_TXCB)
1359                         ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/);
1360                 m_freem(sbuf->m);
1361                 ieee80211_free_node(sbuf->ni);
1362
1363                 sc->sc_tx_timer = 0;
1364                 break;
1365         }
1366
1367         sbd->type = IPW_SBD_TYPE_NOASSOC;
1368 }
1369
1370 static void
1371 ipw_tx_intr(struct ipw_softc *sc)
1372 {
1373         struct ifnet *ifp = sc->sc_ifp;
1374         struct ipw_soft_bd *sbd;
1375         uint32_t r, i;
1376
1377         if (!(sc->flags & IPW_FLAG_FW_INITED))
1378                 return;
1379
1380         r = CSR_READ_4(sc, IPW_CSR_TX_READ);
1381
1382         for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) {
1383                 sbd = &sc->stbd_list[i];
1384
1385                 if (sbd->type == IPW_SBD_TYPE_DATA)
1386                         ifp->if_opackets++;
1387
1388                 ipw_release_sbd(sc, sbd);
1389                 sc->txfree++;
1390         }
1391
1392         /* remember what the firmware has processed */
1393         sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1;
1394
1395         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1396         ipw_start_locked(ifp);
1397 }
1398
1399 static void
1400 ipw_fatal_error_intr(struct ipw_softc *sc)
1401 {
1402         struct ifnet *ifp = sc->sc_ifp;
1403         struct ieee80211com *ic = ifp->if_l2com;
1404         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1405
1406         device_printf(sc->sc_dev, "firmware error\n");
1407         if (vap != NULL) {
1408                 IPW_UNLOCK(sc);
1409                 ieee80211_cancel_scan(vap);
1410                 IPW_LOCK(sc);
1411         }
1412         ieee80211_runtask(ic, &sc->sc_init_task);
1413 }
1414
1415 static void
1416 ipw_intr(void *arg)
1417 {
1418         struct ipw_softc *sc = arg;
1419         uint32_t r;
1420
1421         IPW_LOCK(sc);
1422
1423         r = CSR_READ_4(sc, IPW_CSR_INTR);
1424         if (r == 0 || r == 0xffffffff)
1425                 goto done;
1426
1427         /* disable interrupts */
1428         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1429
1430         /* acknowledge all interrupts */
1431         CSR_WRITE_4(sc, IPW_CSR_INTR, r);
1432
1433         if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) {
1434                 ipw_fatal_error_intr(sc);
1435                 goto done;
1436         }
1437
1438         if (r & IPW_INTR_FW_INIT_DONE)
1439                 wakeup(sc);
1440
1441         if (r & IPW_INTR_RX_TRANSFER)
1442                 ipw_rx_intr(sc);
1443
1444         if (r & IPW_INTR_TX_TRANSFER)
1445                 ipw_tx_intr(sc);
1446
1447         /* re-enable interrupts */
1448         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1449 done:
1450         IPW_UNLOCK(sc);
1451 }
1452
1453 static void
1454 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1455 {
1456         if (error != 0)
1457                 return;
1458
1459         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1460
1461         *(bus_addr_t *)arg = segs[0].ds_addr;
1462 }
1463
1464 static const char *
1465 ipw_cmdname(int cmd)
1466 {
1467 #define N(a)    (sizeof(a) / sizeof(a[0]))
1468         static const struct {
1469                 int     cmd;
1470                 const char *name;
1471         } cmds[] = {
1472                 { IPW_CMD_ADD_MULTICAST,        "ADD_MULTICAST" },
1473                 { IPW_CMD_BROADCAST_SCAN,       "BROADCAST_SCAN" },
1474                 { IPW_CMD_DISABLE,              "DISABLE" },
1475                 { IPW_CMD_DISABLE_PHY,          "DISABLE_PHY" },
1476                 { IPW_CMD_ENABLE,               "ENABLE" },
1477                 { IPW_CMD_PREPARE_POWER_DOWN,   "PREPARE_POWER_DOWN" },
1478                 { IPW_CMD_SET_BASIC_TX_RATES,   "SET_BASIC_TX_RATES" },
1479                 { IPW_CMD_SET_BEACON_INTERVAL,  "SET_BEACON_INTERVAL" },
1480                 { IPW_CMD_SET_CHANNEL,          "SET_CHANNEL" },
1481                 { IPW_CMD_SET_CONFIGURATION,    "SET_CONFIGURATION" },
1482                 { IPW_CMD_SET_DESIRED_BSSID,    "SET_DESIRED_BSSID" },
1483                 { IPW_CMD_SET_ESSID,            "SET_ESSID" },
1484                 { IPW_CMD_SET_FRAG_THRESHOLD,   "SET_FRAG_THRESHOLD" },
1485                 { IPW_CMD_SET_MAC_ADDRESS,      "SET_MAC_ADDRESS" },
1486                 { IPW_CMD_SET_MANDATORY_BSSID,  "SET_MANDATORY_BSSID" },
1487                 { IPW_CMD_SET_MODE,             "SET_MODE" },
1488                 { IPW_CMD_SET_MSDU_TX_RATES,    "SET_MSDU_TX_RATES" },
1489                 { IPW_CMD_SET_POWER_MODE,       "SET_POWER_MODE" },
1490                 { IPW_CMD_SET_RTS_THRESHOLD,    "SET_RTS_THRESHOLD" },
1491                 { IPW_CMD_SET_SCAN_OPTIONS,     "SET_SCAN_OPTIONS" },
1492                 { IPW_CMD_SET_SECURITY_INFO,    "SET_SECURITY_INFO" },
1493                 { IPW_CMD_SET_TX_POWER_INDEX,   "SET_TX_POWER_INDEX" },
1494                 { IPW_CMD_SET_TX_RATES,         "SET_TX_RATES" },
1495                 { IPW_CMD_SET_WEP_FLAGS,        "SET_WEP_FLAGS" },
1496                 { IPW_CMD_SET_WEP_KEY,          "SET_WEP_KEY" },
1497                 { IPW_CMD_SET_WEP_KEY_INDEX,    "SET_WEP_KEY_INDEX" },
1498                 { IPW_CMD_SET_WPA_IE,           "SET_WPA_IE" },
1499
1500         };
1501         static char buf[12];
1502         int i;
1503
1504         for (i = 0; i < N(cmds); i++)
1505                 if (cmds[i].cmd == cmd)
1506                         return cmds[i].name;
1507         snprintf(buf, sizeof(buf), "%u", cmd);
1508         return buf;
1509 #undef N
1510 }
1511
1512 /*
1513  * Send a command to the firmware and wait for the acknowledgement.
1514  */
1515 static int
1516 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len)
1517 {
1518         struct ipw_soft_bd *sbd;
1519         bus_addr_t physaddr;
1520         int error;
1521
1522         IPW_LOCK_ASSERT(sc);
1523
1524         if (sc->flags & IPW_FLAG_BUSY) {
1525                 device_printf(sc->sc_dev, "%s: %s not sent, busy\n",
1526                         __func__, ipw_cmdname(type));
1527                 return EAGAIN;
1528         }
1529         sc->flags |= IPW_FLAG_BUSY;
1530
1531         sbd = &sc->stbd_list[sc->txcur];
1532
1533         error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd,
1534             sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0);
1535         if (error != 0) {
1536                 device_printf(sc->sc_dev, "could not map command DMA memory\n");
1537                 sc->flags &= ~IPW_FLAG_BUSY;
1538                 return error;
1539         }
1540
1541         sc->cmd.type = htole32(type);
1542         sc->cmd.subtype = 0;
1543         sc->cmd.len = htole32(len);
1544         sc->cmd.seq = 0;
1545         memcpy(sc->cmd.data, data, len);
1546
1547         sbd->type = IPW_SBD_TYPE_COMMAND;
1548         sbd->bd->physaddr = htole32(physaddr);
1549         sbd->bd->len = htole32(sizeof (struct ipw_cmd));
1550         sbd->bd->nfrag = 1;
1551         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND |
1552             IPW_BD_FLAG_TX_LAST_FRAGMENT;
1553
1554         bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE);
1555         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1556
1557 #ifdef IPW_DEBUG
1558         if (ipw_debug >= 4) {
1559                 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type,
1560                     0, 0, len);
1561                 /* Print the data buffer in the higher debug level */
1562                 if (ipw_debug >= 9 && len > 0) {
1563                         printf(" data: 0x");
1564                         for (int i = 1; i <= len; i++)
1565                                 printf("%1D", (u_char *)data + len - i, "");
1566                 }
1567                 printf("\n");
1568         }
1569 #endif
1570
1571         /* kick firmware */
1572         sc->txfree--;
1573         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1574         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1575
1576         /* wait at most one second for command to complete */
1577         error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz);
1578         if (error != 0) {
1579                 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n",
1580                     __func__, ipw_cmdname(type), error);
1581                 sc->flags &= ~IPW_FLAG_BUSY;
1582                 return (error);
1583         }
1584         return (0);
1585 }
1586
1587 static int
1588 ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni)
1589 {
1590         struct ipw_softc *sc = ifp->if_softc;
1591         struct ieee80211com *ic = ifp->if_l2com;
1592         struct ieee80211vap *vap = ni->ni_vap;
1593         struct ieee80211_frame *wh;
1594         struct ipw_soft_bd *sbd;
1595         struct ipw_soft_hdr *shdr;
1596         struct ipw_soft_buf *sbuf;
1597         struct ieee80211_key *k;
1598         struct mbuf *mnew;
1599         bus_dma_segment_t segs[IPW_MAX_NSEG];
1600         bus_addr_t physaddr;
1601         int nsegs, error, i;
1602
1603         wh = mtod(m0, struct ieee80211_frame *);
1604
1605         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1606                 k = ieee80211_crypto_encap(ni, m0);
1607                 if (k == NULL) {
1608                         m_freem(m0);
1609                         return ENOBUFS;
1610                 }
1611                 /* packet header may have moved, reset our local pointer */
1612                 wh = mtod(m0, struct ieee80211_frame *);
1613         }
1614
1615         if (ieee80211_radiotap_active_vap(vap)) {
1616                 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap;
1617
1618                 tap->wt_flags = 0;
1619
1620                 ieee80211_radiotap_tx(vap, m0);
1621         }
1622
1623         shdr = SLIST_FIRST(&sc->free_shdr);
1624         sbuf = SLIST_FIRST(&sc->free_sbuf);
1625         KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool"));
1626
1627         shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND);
1628         shdr->hdr.subtype = 0;
1629         shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_WEP) ? 1 : 0;
1630         shdr->hdr.encrypt = 0;
1631         shdr->hdr.keyidx = 0;
1632         shdr->hdr.keysz = 0;
1633         shdr->hdr.fragmentsz = 0;
1634         IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2);
1635         if (ic->ic_opmode == IEEE80211_M_STA)
1636                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3);
1637         else
1638                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1);
1639
1640         /* trim IEEE802.11 header */
1641         m_adj(m0, sizeof (struct ieee80211_frame));
1642
1643         error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs,
1644             &nsegs, 0);
1645         if (error != 0 && error != EFBIG) {
1646                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1647                     error);
1648                 m_freem(m0);
1649                 return error;
1650         }
1651         if (error != 0) {
1652                 mnew = m_defrag(m0, M_DONTWAIT);
1653                 if (mnew == NULL) {
1654                         device_printf(sc->sc_dev,
1655                             "could not defragment mbuf\n");
1656                         m_freem(m0);
1657                         return ENOBUFS;
1658                 }
1659                 m0 = mnew;
1660
1661                 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0,
1662                     segs, &nsegs, 0);
1663                 if (error != 0) {
1664                         device_printf(sc->sc_dev,
1665                             "could not map mbuf (error %d)\n", error);
1666                         m_freem(m0);
1667                         return error;
1668                 }
1669         }
1670
1671         error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr,
1672             sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0);
1673         if (error != 0) {
1674                 device_printf(sc->sc_dev, "could not map header DMA memory\n");
1675                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1676                 m_freem(m0);
1677                 return error;
1678         }
1679
1680         SLIST_REMOVE_HEAD(&sc->free_sbuf, next);
1681         SLIST_REMOVE_HEAD(&sc->free_shdr, next);
1682
1683         sbd = &sc->stbd_list[sc->txcur];
1684         sbd->type = IPW_SBD_TYPE_HEADER;
1685         sbd->priv = shdr;
1686         sbd->bd->physaddr = htole32(physaddr);
1687         sbd->bd->len = htole32(sizeof (struct ipw_hdr));
1688         sbd->bd->nfrag = 1 + nsegs;
1689         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 |
1690             IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1691
1692         DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n",
1693             shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted,
1694             shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr,
1695             ":"));
1696
1697         sc->txfree--;
1698         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1699
1700         sbuf->m = m0;
1701         sbuf->ni = ni;
1702
1703         for (i = 0; i < nsegs; i++) {
1704                 sbd = &sc->stbd_list[sc->txcur];
1705
1706                 sbd->bd->physaddr = htole32(segs[i].ds_addr);
1707                 sbd->bd->len = htole32(segs[i].ds_len);
1708                 sbd->bd->nfrag = 0;
1709                 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3;
1710                 if (i == nsegs - 1) {
1711                         sbd->type = IPW_SBD_TYPE_DATA;
1712                         sbd->priv = sbuf;
1713                         sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT;
1714                 } else {
1715                         sbd->type = IPW_SBD_TYPE_NOASSOC;
1716                         sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1717                 }
1718
1719                 DPRINTFN(5, ("sending fragment (%d)\n", i));
1720
1721                 sc->txfree--;
1722                 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1723         }
1724
1725         bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE);
1726         bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE);
1727         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1728
1729         /* kick firmware */
1730         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1731
1732         return 0;
1733 }
1734
1735 static int
1736 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1737         const struct ieee80211_bpf_params *params)
1738 {
1739         /* no support; just discard */
1740         m_freem(m);
1741         ieee80211_free_node(ni);
1742         return 0;
1743 }
1744
1745 static void
1746 ipw_start(struct ifnet *ifp)
1747 {
1748         struct ipw_softc *sc = ifp->if_softc;
1749
1750         IPW_LOCK(sc);
1751         ipw_start_locked(ifp);
1752         IPW_UNLOCK(sc);
1753 }
1754
1755 static void
1756 ipw_start_locked(struct ifnet *ifp)
1757 {
1758         struct ipw_softc *sc = ifp->if_softc;
1759         struct ieee80211_node *ni;
1760         struct mbuf *m;
1761
1762         IPW_LOCK_ASSERT(sc);
1763
1764         for (;;) {
1765                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1766                 if (m == NULL)
1767                         break;
1768                 if (sc->txfree < 1 + IPW_MAX_NSEG) {
1769                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
1770                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1771                         break;
1772                 }
1773                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1774                 if (ipw_tx_start(ifp, m, ni) != 0) {
1775                         ieee80211_free_node(ni);
1776                         ifp->if_oerrors++;
1777                         break;
1778                 }
1779                 /* start watchdog timer */
1780                 sc->sc_tx_timer = 5;
1781         }
1782 }
1783
1784 static void
1785 ipw_watchdog(void *arg)
1786 {
1787         struct ipw_softc *sc = arg;
1788         struct ifnet *ifp = sc->sc_ifp;
1789         struct ieee80211com *ic = ifp->if_l2com;
1790
1791         IPW_LOCK_ASSERT(sc);
1792
1793         if (sc->sc_tx_timer > 0) {
1794                 if (--sc->sc_tx_timer == 0) {
1795                         if_printf(ifp, "device timeout\n");
1796                         ifp->if_oerrors++;
1797                         taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1798                 }
1799         }
1800         if (sc->sc_scan_timer > 0) {
1801                 if (--sc->sc_scan_timer == 0) {
1802                         DPRINTFN(3, ("Scan timeout\n"));
1803                         /* End the scan */
1804                         if (sc->flags & IPW_FLAG_SCANNING) {
1805                                 IPW_UNLOCK(sc);
1806                                 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps));
1807                                 IPW_LOCK(sc);
1808                                 sc->flags &= ~IPW_FLAG_SCANNING;
1809                         }
1810                 }
1811         }
1812         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1813                 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
1814 }
1815
1816 static int
1817 ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1818 {
1819         struct ipw_softc *sc = ifp->if_softc;
1820         struct ieee80211com *ic = ifp->if_l2com;
1821         struct ifreq *ifr = (struct ifreq *) data;
1822         int error = 0, startall = 0;
1823
1824         switch (cmd) {
1825         case SIOCSIFFLAGS:
1826                 IPW_LOCK(sc);
1827                 if (ifp->if_flags & IFF_UP) {
1828                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1829                                 ipw_init_locked(sc);
1830                                 startall = 1;
1831                         }
1832                 } else {
1833                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1834                                 ipw_stop_locked(sc);
1835                 }
1836                 IPW_UNLOCK(sc);
1837                 if (startall)
1838                         ieee80211_start_all(ic);
1839                 break;
1840         case SIOCGIFMEDIA:
1841                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1842                 break;
1843         case SIOCGIFADDR:
1844                 error = ether_ioctl(ifp, cmd, data);
1845                 break;
1846         default:
1847                 error = EINVAL;
1848                 break;
1849         }
1850         return error;
1851 }
1852
1853 static void
1854 ipw_stop_master(struct ipw_softc *sc)
1855 {
1856         uint32_t tmp;
1857         int ntries;
1858
1859         /* disable interrupts */
1860         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1861
1862         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER);
1863         for (ntries = 0; ntries < 50; ntries++) {
1864                 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED)
1865                         break;
1866                 DELAY(10);
1867         }
1868         if (ntries == 50)
1869                 device_printf(sc->sc_dev, "timeout waiting for master\n");
1870
1871         tmp = CSR_READ_4(sc, IPW_CSR_RST);
1872         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET);
1873
1874         /* Clear all flags except the following */
1875         sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH;
1876 }
1877
1878 static int
1879 ipw_reset(struct ipw_softc *sc)
1880 {
1881         uint32_t tmp;
1882         int ntries;
1883
1884         ipw_stop_master(sc);
1885
1886         /* move adapter to D0 state */
1887         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1888         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1889
1890         /* wait for clock stabilization */
1891         for (ntries = 0; ntries < 1000; ntries++) {
1892                 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY)
1893                         break;
1894                 DELAY(200);
1895         }
1896         if (ntries == 1000)
1897                 return EIO;
1898
1899         tmp =  CSR_READ_4(sc, IPW_CSR_RST);
1900         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET);
1901
1902         DELAY(10);
1903
1904         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1905         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1906
1907         return 0;
1908 }
1909
1910 static int
1911 ipw_waitfordisable(struct ipw_softc *sc, int waitfor)
1912 {
1913         int ms = hz < 1000 ? 1 : hz/10;
1914         int i, error;
1915
1916         for (i = 0; i < 100; i++) {
1917                 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor)
1918                         return 0;
1919                 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms);
1920                 if (error == 0 || error != EWOULDBLOCK)
1921                         return 0;
1922         }
1923         DPRINTF(("%s: timeout waiting for %s\n",
1924                 __func__, waitfor ? "disable" : "enable"));
1925         return ETIMEDOUT;
1926 }
1927
1928 static int
1929 ipw_enable(struct ipw_softc *sc)
1930 {
1931         int error;
1932
1933         if ((sc->flags & IPW_FLAG_ENABLED) == 0) {
1934                 DPRINTF(("Enable adapter\n"));
1935                 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
1936                 if (error != 0)
1937                         return error;
1938                 error = ipw_waitfordisable(sc, 0);
1939                 if (error != 0)
1940                         return error;
1941                 sc->flags |= IPW_FLAG_ENABLED;
1942         }
1943         return 0;
1944 }
1945
1946 static int
1947 ipw_disable(struct ipw_softc *sc)
1948 {
1949         int error;
1950
1951         if (sc->flags & IPW_FLAG_ENABLED) {
1952                 DPRINTF(("Disable adapter\n"));
1953                 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0);
1954                 if (error != 0)
1955                         return error;
1956                 error = ipw_waitfordisable(sc, 1);
1957                 if (error != 0)
1958                         return error;
1959                 sc->flags &= ~IPW_FLAG_ENABLED;
1960         }
1961         return 0;
1962 }
1963
1964 /*
1965  * Upload the microcode to the device.
1966  */
1967 static int
1968 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size)
1969 {
1970         int ntries;
1971
1972         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
1973         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1974
1975         MEM_WRITE_2(sc, 0x220000, 0x0703);
1976         MEM_WRITE_2(sc, 0x220000, 0x0707);
1977
1978         MEM_WRITE_1(sc, 0x210014, 0x72);
1979         MEM_WRITE_1(sc, 0x210014, 0x72);
1980
1981         MEM_WRITE_1(sc, 0x210000, 0x40);
1982         MEM_WRITE_1(sc, 0x210000, 0x00);
1983         MEM_WRITE_1(sc, 0x210000, 0x40);
1984
1985         MEM_WRITE_MULTI_1(sc, 0x210010, uc, size);
1986
1987         MEM_WRITE_1(sc, 0x210000, 0x00);
1988         MEM_WRITE_1(sc, 0x210000, 0x00);
1989         MEM_WRITE_1(sc, 0x210000, 0x80);
1990
1991         MEM_WRITE_2(sc, 0x220000, 0x0703);
1992         MEM_WRITE_2(sc, 0x220000, 0x0707);
1993
1994         MEM_WRITE_1(sc, 0x210014, 0x72);
1995         MEM_WRITE_1(sc, 0x210014, 0x72);
1996
1997         MEM_WRITE_1(sc, 0x210000, 0x00);
1998         MEM_WRITE_1(sc, 0x210000, 0x80);
1999
2000         for (ntries = 0; ntries < 10; ntries++) {
2001                 if (MEM_READ_1(sc, 0x210000) & 1)
2002                         break;
2003                 DELAY(10);
2004         }
2005         if (ntries == 10) {
2006                 device_printf(sc->sc_dev,
2007                     "timeout waiting for ucode to initialize\n");
2008                 return EIO;
2009         }
2010
2011         MEM_WRITE_4(sc, 0x3000e0, 0);
2012
2013         return 0;
2014 }
2015
2016 /* set of macros to handle unaligned little endian data in firmware image */
2017 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2018 #define GETLE16(p) ((p)[0] | (p)[1] << 8)
2019 static int
2020 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size)
2021 {
2022         const uint8_t *p, *end;
2023         uint32_t tmp, dst;
2024         uint16_t len;
2025         int error;
2026
2027         p = fw;
2028         end = fw + size;
2029         while (p < end) {
2030                 dst = GETLE32(p); p += 4;
2031                 len = GETLE16(p); p += 2;
2032
2033                 ipw_write_mem_1(sc, dst, p, len);
2034                 p += len;
2035         }
2036
2037         CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK |
2038             IPW_IO_LED_OFF);
2039
2040         /* enable interrupts */
2041         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
2042
2043         /* kick the firmware */
2044         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
2045
2046         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
2047         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY);
2048
2049         /* wait at most one second for firmware initialization to complete */
2050         if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) {
2051                 device_printf(sc->sc_dev, "timeout waiting for firmware "
2052                     "initialization to complete\n");
2053                 return error;
2054         }
2055
2056         tmp = CSR_READ_4(sc, IPW_CSR_IO);
2057         CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK |
2058             IPW_IO_GPIO3_MASK);
2059
2060         return 0;
2061 }
2062
2063 static int
2064 ipw_setwepkeys(struct ipw_softc *sc)
2065 {
2066         struct ifnet *ifp = sc->sc_ifp;
2067         struct ieee80211com *ic = ifp->if_l2com;
2068         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2069         struct ipw_wep_key wepkey;
2070         struct ieee80211_key *wk;
2071         int error, i;
2072
2073         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2074                 wk = &vap->iv_nw_keys[i];
2075
2076                 if (wk->wk_cipher == NULL ||
2077                     wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP)
2078                         continue;
2079
2080                 wepkey.idx = i;
2081                 wepkey.len = wk->wk_keylen;
2082                 memset(wepkey.key, 0, sizeof wepkey.key);
2083                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2084                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2085                     wepkey.len));
2086                 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey,
2087                     sizeof wepkey);
2088                 if (error != 0)
2089                         return error;
2090         }
2091         return 0;
2092 }
2093
2094 static int
2095 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen)
2096 {
2097         struct ipw_wpa_ie wpaie;
2098
2099         memset(&wpaie, 0, sizeof(wpaie));
2100         wpaie.len = htole32(ielen);
2101         /* XXX verify length */
2102         memcpy(&wpaie.ie, ie, ielen);
2103         DPRINTF(("Setting WPA IE\n"));
2104         return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie));
2105 }
2106
2107 static int
2108 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid)
2109 {
2110         static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
2111
2112         if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) {
2113                 DPRINTF(("Setting mandatory BSSID to null\n"));
2114                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0);
2115         } else {
2116                 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":"));
2117                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID,
2118                         bssid, IEEE80211_ADDR_LEN);
2119         }
2120 }
2121
2122 static int
2123 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen)
2124 {
2125         if (ssidlen == 0) {
2126                 /*
2127                  * A bug in the firmware breaks the ``don't associate''
2128                  * bit in the scan options command.  To compensate for
2129                  * this install a bogus ssid when no ssid is specified
2130                  * so the firmware won't try to associate.
2131                  */
2132                 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n"));
2133                 return ipw_cmd(sc, IPW_CMD_SET_ESSID,
2134                         "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27"
2135                         "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31"
2136                         "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b"
2137                         "\x3c\x3d", IEEE80211_NWID_LEN);
2138         } else {
2139 #ifdef IPW_DEBUG
2140                 if (ipw_debug > 0) {
2141                         printf("Setting ESSID to ");
2142                         ieee80211_print_essid(ssid, ssidlen);
2143                         printf("\n");
2144                 }
2145 #endif
2146                 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen);
2147         }
2148 }
2149
2150 static int
2151 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags)
2152 {
2153         struct ipw_scan_options opts;
2154
2155         DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags));
2156         opts.channels = htole32(chanmask);
2157         opts.flags = htole32(flags);
2158         return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts));
2159 }
2160
2161 static int
2162 ipw_scan(struct ipw_softc *sc)
2163 {
2164         uint32_t params;
2165         int error;
2166
2167         DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags));
2168
2169         if (sc->flags & IPW_FLAG_SCANNING)
2170                 return (EBUSY);
2171         sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK;
2172
2173         /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */
2174         error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE);
2175         if (error != 0)
2176                 goto done;
2177
2178         /*
2179          * Setup null/bogus ssid so firmware doesn't use any previous
2180          * ssid to try and associate.  This is because the ``don't
2181          * associate'' option bit is broken (sigh).
2182          */
2183         error = ipw_setssid(sc, NULL, 0);
2184         if (error != 0)
2185                 goto done;
2186
2187         /*
2188          * NB: the adapter may be disabled on association lost;
2189          *     if so just re-enable it to kick off scanning.
2190          */
2191         DPRINTF(("Starting scan\n"));
2192         sc->sc_scan_timer = 3;
2193         if (sc->flags & IPW_FLAG_ENABLED) {
2194                 params = 0;                             /* XXX? */
2195                 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN,
2196                                 &params, sizeof(params));
2197         } else
2198                 error = ipw_enable(sc);
2199 done:
2200         if (error != 0) {
2201                 DPRINTF(("Scan failed\n"));
2202                 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK);
2203         }
2204         return (error);
2205 }
2206
2207 static int
2208 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan)
2209 {
2210         struct ifnet *ifp = sc->sc_ifp;
2211         struct ieee80211com *ic = ifp->if_l2com;
2212         uint32_t data;
2213         int error;
2214
2215         data = htole32(ieee80211_chan2ieee(ic, chan));
2216         DPRINTF(("Setting channel to %u\n", le32toh(data)));
2217         error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data);
2218         if (error == 0)
2219                 ipw_setcurchan(sc, chan);
2220         return error;
2221 }
2222
2223 static void
2224 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2225 {
2226         struct ifnet *ifp = vap->iv_ic->ic_ifp;
2227         struct ipw_softc *sc = ifp->if_softc;
2228         struct ieee80211_node *ni = vap->iv_bss;
2229         struct ipw_security security;
2230         uint32_t data;
2231         int error;
2232
2233         IPW_LOCK(sc);
2234         error = ipw_disable(sc);
2235         if (error != 0)
2236                 goto done;
2237
2238         memset(&security, 0, sizeof security);
2239         security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ?
2240             IPW_AUTH_SHARED : IPW_AUTH_OPEN;
2241         security.ciphers = htole32(IPW_CIPHER_NONE);
2242         DPRINTF(("Setting authmode to %u\n", security.authmode));
2243         error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security,
2244             sizeof security);
2245         if (error != 0)
2246                 goto done;
2247
2248         data = htole32(vap->iv_rtsthreshold);
2249         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2250         error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2251         if (error != 0)
2252                 goto done;
2253
2254         data = htole32(vap->iv_fragthreshold);
2255         DPRINTF(("Setting frag threshold to %u\n", le32toh(data)));
2256         error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2257         if (error != 0)
2258                 goto done;
2259
2260         if (vap->iv_flags & IEEE80211_F_PRIVACY) {
2261                 error = ipw_setwepkeys(sc);
2262                 if (error != 0)
2263                         goto done;
2264
2265                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) {
2266                         data = htole32(vap->iv_def_txkey);
2267                         DPRINTF(("Setting wep tx key index to %u\n",
2268                                 le32toh(data)));
2269                         error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data,
2270                             sizeof data);
2271                         if (error != 0)
2272                                 goto done;
2273                 }
2274         }
2275
2276         data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0);
2277         DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data)));
2278         error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data);
2279         if (error != 0)
2280                 goto done;
2281
2282         error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen);
2283         if (error != 0)
2284                 goto done;
2285
2286         error = ipw_setbssid(sc, ni->ni_bssid);
2287         if (error != 0)
2288                 goto done;
2289
2290         if (vap->iv_appie_wpa != NULL) {
2291                 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2292                 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len);
2293                 if (error != 0)
2294                         goto done;
2295         }
2296         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2297                 error = ipw_setchannel(sc, ni->ni_chan);
2298                 if (error != 0)
2299                         goto done;
2300         }
2301
2302         /* lock scan to ap's channel and enable associate */
2303         error = ipw_setscanopts(sc,
2304             1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0);
2305         if (error != 0)
2306                 goto done;
2307
2308         error = ipw_enable(sc);         /* finally, enable adapter */
2309         if (error == 0)
2310                 sc->flags |= IPW_FLAG_ASSOCIATING;
2311 done:
2312         IPW_UNLOCK(sc);
2313 }
2314
2315 static void
2316 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2317 {
2318         struct ifnet *ifp = vap->iv_ic->ic_ifp;
2319         struct ieee80211_node *ni = vap->iv_bss;
2320         struct ipw_softc *sc = ifp->if_softc;
2321
2322         IPW_LOCK(sc);
2323         DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":"));
2324         /*
2325          * NB: don't try to do this if ipw_stop_master has
2326          *     shutdown the firmware and disabled interrupts.
2327          */
2328         if (sc->flags & IPW_FLAG_FW_INITED) {
2329                 sc->flags &= ~IPW_FLAG_ASSOCIATED;
2330                 /*
2331                  * NB: firmware currently ignores bssid parameter, but
2332                  *     supply it in case this changes (follow linux driver).
2333                  */
2334                 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE,
2335                         ni->ni_bssid, IEEE80211_ADDR_LEN);
2336         }
2337         IPW_UNLOCK(sc);
2338 }
2339
2340 /*
2341  * Handler for sc_init_task.  This is a simple wrapper around ipw_init().
2342  * It is called on firmware panics or on watchdog timeouts.
2343  */
2344 static void
2345 ipw_init_task(void *context, int pending)
2346 {
2347         ipw_init(context);
2348 }
2349
2350 static void
2351 ipw_init(void *priv)
2352 {
2353         struct ipw_softc *sc = priv;
2354         struct ifnet *ifp = sc->sc_ifp;
2355         struct ieee80211com *ic = ifp->if_l2com;
2356
2357         IPW_LOCK(sc);
2358         ipw_init_locked(sc);
2359         IPW_UNLOCK(sc);
2360
2361         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2362                 ieee80211_start_all(ic);                /* start all vap's */
2363 }
2364
2365 static void
2366 ipw_init_locked(struct ipw_softc *sc)
2367 {
2368         struct ifnet *ifp = sc->sc_ifp;
2369         struct ieee80211com *ic = ifp->if_l2com;
2370         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2371         const struct firmware *fp;
2372         const struct ipw_firmware_hdr *hdr;
2373         const char *fw;
2374
2375         IPW_LOCK_ASSERT(sc);
2376
2377         DPRINTF(("%s: state %s flags 0x%x\n", __func__,
2378                 ieee80211_state_name[vap->iv_state], sc->flags));
2379
2380         /*
2381          * Avoid re-entrant calls.  We need to release the mutex in ipw_init()
2382          * when loading the firmware and we don't want to be called during this
2383          * operation.
2384          */
2385         if (sc->flags & IPW_FLAG_INIT_LOCKED)
2386                 return;
2387         sc->flags |= IPW_FLAG_INIT_LOCKED;
2388
2389         ipw_stop_locked(sc);
2390
2391         if (ipw_reset(sc) != 0) {
2392                 device_printf(sc->sc_dev, "could not reset adapter\n");
2393                 goto fail;
2394         }
2395
2396         if (sc->sc_firmware == NULL) {
2397                 device_printf(sc->sc_dev, "no firmware\n");
2398                 goto fail;
2399         }
2400         /* NB: consistency already checked on load */
2401         fp = sc->sc_firmware;
2402         hdr = (const struct ipw_firmware_hdr *)fp->data;
2403
2404         DPRINTF(("Loading firmware image '%s'\n", fp->name));
2405         fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz);
2406         if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) {
2407                 device_printf(sc->sc_dev, "could not load microcode\n");
2408                 goto fail;
2409         }
2410
2411         ipw_stop_master(sc);
2412
2413         /*
2414          * Setup tx, rx and status rings.
2415          */
2416         sc->txold = IPW_NTBD - 1;
2417         sc->txcur = 0;
2418         sc->txfree = IPW_NTBD - 2;
2419         sc->rxcur = IPW_NRBD - 1;
2420
2421         CSR_WRITE_4(sc, IPW_CSR_TX_BASE,  sc->tbd_phys);
2422         CSR_WRITE_4(sc, IPW_CSR_TX_SIZE,  IPW_NTBD);
2423         CSR_WRITE_4(sc, IPW_CSR_TX_READ,  0);
2424         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
2425
2426         CSR_WRITE_4(sc, IPW_CSR_RX_BASE,  sc->rbd_phys);
2427         CSR_WRITE_4(sc, IPW_CSR_RX_SIZE,  IPW_NRBD);
2428         CSR_WRITE_4(sc, IPW_CSR_RX_READ,  0);
2429         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
2430
2431         CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys);
2432
2433         fw = (const char *)fp->data + sizeof *hdr;
2434         if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) {
2435                 device_printf(sc->sc_dev, "could not load firmware\n");
2436                 goto fail;
2437         }
2438
2439         sc->flags |= IPW_FLAG_FW_INITED;
2440
2441         /* retrieve information tables base addresses */
2442         sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE);
2443         sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE);
2444
2445         ipw_write_table1(sc, IPW_INFO_LOCK, 0);
2446
2447         if (ipw_config(sc) != 0) {
2448                 device_printf(sc->sc_dev, "device configuration failed\n");
2449                 goto fail;
2450         }
2451
2452         callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
2453         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2454         ifp->if_drv_flags |= IFF_DRV_RUNNING;
2455
2456         sc->flags &=~ IPW_FLAG_INIT_LOCKED;
2457         return;
2458
2459 fail:
2460         ipw_stop_locked(sc);
2461         sc->flags &=~ IPW_FLAG_INIT_LOCKED;
2462 }
2463
2464 static int
2465 ipw_config(struct ipw_softc *sc)
2466 {
2467         struct ifnet *ifp = sc->sc_ifp;
2468         struct ieee80211com *ic = ifp->if_l2com;
2469         struct ipw_configuration config;
2470         uint32_t data;
2471         int error;
2472
2473         error = ipw_disable(sc);
2474         if (error != 0)
2475                 return error;
2476
2477         switch (ic->ic_opmode) {
2478         case IEEE80211_M_STA:
2479         case IEEE80211_M_HOSTAP:
2480         case IEEE80211_M_WDS:           /* XXX */
2481                 data = htole32(IPW_MODE_BSS);
2482                 break;
2483         case IEEE80211_M_IBSS:
2484         case IEEE80211_M_AHDEMO:
2485                 data = htole32(IPW_MODE_IBSS);
2486                 break;
2487         case IEEE80211_M_MONITOR:
2488                 data = htole32(IPW_MODE_MONITOR);
2489                 break;
2490         default:
2491                 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
2492                 return EINVAL;
2493         }
2494         DPRINTF(("Setting mode to %u\n", le32toh(data)));
2495         error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data);
2496         if (error != 0)
2497                 return error;
2498
2499         if (ic->ic_opmode == IEEE80211_M_IBSS ||
2500             ic->ic_opmode == IEEE80211_M_MONITOR) {
2501                 error = ipw_setchannel(sc, ic->ic_curchan);
2502                 if (error != 0)
2503                         return error;
2504         }
2505
2506         if (ic->ic_opmode == IEEE80211_M_MONITOR)
2507                 return ipw_enable(sc);
2508
2509         config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK |
2510             IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE);
2511         if (ic->ic_opmode == IEEE80211_M_IBSS)
2512                 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START);
2513         if (ifp->if_flags & IFF_PROMISC)
2514                 config.flags |= htole32(IPW_CFG_PROMISCUOUS);
2515         config.bss_chan = htole32(0x3fff); /* channels 1-14 */
2516         config.ibss_chan = htole32(0x7ff); /* channels 1-11 */
2517         DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags)));
2518         error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config);
2519         if (error != 0)
2520                 return error;
2521
2522         data = htole32(0xf); /* 1, 2, 5.5, 11 */
2523         DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data)));
2524         error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data);
2525         if (error != 0)
2526                 return error;
2527
2528         /* Use the same rate set */
2529         DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data)));
2530         error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data);
2531         if (error != 0)
2532                 return error;
2533
2534         /* Use the same rate set */
2535         DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data)));
2536         error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data);
2537         if (error != 0)
2538                 return error;
2539
2540         data = htole32(IPW_POWER_MODE_CAM);
2541         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2542         error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data);
2543         if (error != 0)
2544                 return error;
2545
2546         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2547                 data = htole32(32); /* default value */
2548                 DPRINTF(("Setting tx power index to %u\n", le32toh(data)));
2549                 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data,
2550                     sizeof data);
2551                 if (error != 0)
2552                         return error;
2553         }
2554
2555         return 0;
2556 }
2557
2558 static void
2559 ipw_stop(void *priv)
2560 {
2561         struct ipw_softc *sc = priv;
2562
2563         IPW_LOCK(sc);
2564         ipw_stop_locked(sc);
2565         IPW_UNLOCK(sc);
2566 }
2567
2568 static void
2569 ipw_stop_locked(struct ipw_softc *sc)
2570 {
2571         struct ifnet *ifp = sc->sc_ifp;
2572         int i;
2573
2574         IPW_LOCK_ASSERT(sc);
2575
2576         callout_stop(&sc->sc_wdtimer);
2577         ipw_stop_master(sc);
2578
2579         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET);
2580
2581         /*
2582          * Release tx buffers.
2583          */
2584         for (i = 0; i < IPW_NTBD; i++)
2585                 ipw_release_sbd(sc, &sc->stbd_list[i]);
2586
2587         sc->sc_tx_timer = 0;
2588         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2589 }
2590
2591 static int
2592 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)
2593 {
2594         struct ipw_softc *sc = arg1;
2595         uint32_t i, size, buf[256];
2596
2597         memset(buf, 0, sizeof buf);
2598
2599         if (!(sc->flags & IPW_FLAG_FW_INITED))
2600                 return SYSCTL_OUT(req, buf, sizeof buf);
2601
2602         CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base);
2603
2604         size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256);
2605         for (i = 1; i < size; i++)
2606                 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA));
2607
2608         return SYSCTL_OUT(req, buf, size);
2609 }
2610
2611 static int
2612 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)
2613 {
2614         struct ipw_softc *sc = arg1;
2615         int val;
2616
2617         val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) &&
2618                 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED));
2619
2620         return SYSCTL_OUT(req, &val, sizeof val);
2621 }
2622
2623 static uint32_t
2624 ipw_read_table1(struct ipw_softc *sc, uint32_t off)
2625 {
2626         return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off));
2627 }
2628
2629 static void
2630 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info)
2631 {
2632         MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info);
2633 }
2634
2635 #if 0
2636 static int
2637 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len)
2638 {
2639         uint32_t addr, info;
2640         uint16_t count, size;
2641         uint32_t total;
2642
2643         /* addr[4] + count[2] + size[2] */
2644         addr = MEM_READ_4(sc, sc->table2_base + off);
2645         info = MEM_READ_4(sc, sc->table2_base + off + 4);
2646
2647         count = info >> 16;
2648         size = info & 0xffff;
2649         total = count * size;
2650
2651         if (total > *len) {
2652                 *len = total;
2653                 return EINVAL;
2654         }
2655
2656         *len = total;
2657         ipw_read_mem_1(sc, addr, buf, total);
2658
2659         return 0;
2660 }
2661
2662 static void
2663 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2664     bus_size_t count)
2665 {
2666         for (; count > 0; offset++, datap++, count--) {
2667                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2668                 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3));
2669         }
2670 }
2671 #endif
2672
2673 static void
2674 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap,
2675     bus_size_t count)
2676 {
2677         for (; count > 0; offset++, datap++, count--) {
2678                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2679                 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap);
2680         }
2681 }
2682
2683 static void
2684 ipw_scan_start(struct ieee80211com *ic)
2685 {
2686         struct ifnet *ifp = ic->ic_ifp;
2687         struct ipw_softc *sc = ifp->if_softc;
2688
2689         IPW_LOCK(sc);
2690         ipw_scan(sc);
2691         IPW_UNLOCK(sc);
2692 }
2693
2694 static void
2695 ipw_set_channel(struct ieee80211com *ic)
2696 {
2697         struct ifnet *ifp = ic->ic_ifp;
2698         struct ipw_softc *sc = ifp->if_softc;
2699
2700         IPW_LOCK(sc);
2701         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2702                 ipw_disable(sc);
2703                 ipw_setchannel(sc, ic->ic_curchan);
2704                 ipw_enable(sc);
2705         }
2706         IPW_UNLOCK(sc);
2707 }
2708
2709 static void
2710 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
2711 {
2712         /* NB: all channels are scanned at once */
2713 }
2714
2715 static void
2716 ipw_scan_mindwell(struct ieee80211_scan_state *ss)
2717 {
2718         /* NB: don't try to abort scan; wait for firmware to finish */
2719 }
2720
2721 static void
2722 ipw_scan_end(struct ieee80211com *ic)
2723 {
2724         struct ifnet *ifp = ic->ic_ifp;
2725         struct ipw_softc *sc = ifp->if_softc;
2726
2727         IPW_LOCK(sc);
2728         sc->flags &= ~IPW_FLAG_SCANNING;
2729         IPW_UNLOCK(sc);
2730 }