sys/dev/ipw/if_ipw.c

   1 /*-
   2  * Copyright (c) 2004-2006
   3  *      Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
   4  * Copyright (c) 2006 Sam Leffler, Errno Consulting
   5  * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice unmodified, this list of conditions, and the following
  12  *    disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 /*-
  34  * Intel(R) PRO/Wireless 2100 MiniPCI driver
  35  * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/sysctl.h>
  40 #include <sys/sockio.h>
  41 #include <sys/mbuf.h>
  42 #include <sys/kernel.h>
  43 #include <sys/socket.h>
  44 #include <sys/systm.h>
  45 #include <sys/malloc.h>
  46 #include <sys/queue.h>
  47 #include <sys/taskqueue.h>
  48 #include <sys/module.h>
  49 #include <sys/bus.h>
  50 #include <sys/endian.h>
  51 #include <sys/linker.h>
  52 #include <sys/firmware.h>
  53
  54 #include <machine/bus.h>
  55 #include <machine/resource.h>
  56 #include <sys/rman.h>
  57
  58 #include <dev/pci/pcireg.h>
  59 #include <dev/pci/pcivar.h>
  60
  61 #include <net/bpf.h>
  62 #include <net/if.h>
  63 #include <net/if_var.h>
  64 #include <net/if_arp.h>
  65 #include <net/ethernet.h>
  66 #include <net/if_dl.h>
  67 #include <net/if_media.h>
  68 #include <net/if_types.h>
  69
  70 #include <net80211/ieee80211_var.h>
  71 #include <net80211/ieee80211_radiotap.h>
  72
  73 #include <netinet/in.h>
  74 #include <netinet/in_systm.h>
  75 #include <netinet/in_var.h>
  76 #include <netinet/ip.h>
  77 #include <netinet/if_ether.h>
  78
  79 #include <dev/ipw/if_ipwreg.h>
  80 #include <dev/ipw/if_ipwvar.h>
  81
  82 #define IPW_DEBUG
  83 #ifdef IPW_DEBUG
  84 #define DPRINTF(x)      do { if (ipw_debug > 0) printf x; } while (0)
  85 #define DPRINTFN(n, x)  do { if (ipw_debug >= (n)) printf x; } while (0)
  86 int ipw_debug = 0;
  87 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level");
  88 #else
  89 #define DPRINTF(x)
  90 #define DPRINTFN(n, x)
  91 #endif
  92
  93 MODULE_DEPEND(ipw, pci,  1, 1, 1);
  94 MODULE_DEPEND(ipw, wlan, 1, 1, 1);
  95 MODULE_DEPEND(ipw, firmware, 1, 1, 1);
  96
  97 struct ipw_ident {
  98         uint16_t        vendor;
  99         uint16_t        device;
 100         const char      *name;
 101 };
 102
 103 static const struct ipw_ident ipw_ident_table[] = {
 104         { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" },
 105
 106         { 0, 0, NULL }
 107 };
 108
 109 static struct ieee80211vap *ipw_vap_create(struct ieee80211com *,
 110                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
 111                     const uint8_t [IEEE80211_ADDR_LEN],
 112                     const uint8_t [IEEE80211_ADDR_LEN]);
 113 static void     ipw_vap_delete(struct ieee80211vap *);
 114 static int      ipw_dma_alloc(struct ipw_softc *);
 115 static void     ipw_release(struct ipw_softc *);
 116 static void     ipw_media_status(struct ifnet *, struct ifmediareq *);
 117 static int      ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 118 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t);
 119 static uint16_t ipw_read_chanmask(struct ipw_softc *);
 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 ipw_softc *, 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 int      ipw_transmit(struct ieee80211com *, struct mbuf *);
 136 static void     ipw_start(struct ipw_softc *);
 137 static void     ipw_watchdog(void *);
 138 static void     ipw_parent(struct ieee80211com *);
 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_getradiocaps(struct ieee80211com *, int, int *,
 169                     struct ieee80211_channel[]);
 170 static void     ipw_set_channel(struct ieee80211com *);
 171 static void     ipw_scan_curchan(struct ieee80211_scan_state *,
 172                     unsigned long maxdwell);
 173 static void     ipw_scan_mindwell(struct ieee80211_scan_state *);
 174
 175 static int ipw_probe(device_t);
 176 static int ipw_attach(device_t);
 177 static int ipw_detach(device_t);
 178 static int ipw_shutdown(device_t);
 179 static int ipw_suspend(device_t);
 180 static int ipw_resume(device_t);
 181
 182 static device_method_t ipw_methods[] = {
 183         /* Device interface */
 184         DEVMETHOD(device_probe,         ipw_probe),
 185         DEVMETHOD(device_attach,        ipw_attach),
 186         DEVMETHOD(device_detach,        ipw_detach),
 187         DEVMETHOD(device_shutdown,      ipw_shutdown),
 188         DEVMETHOD(device_suspend,       ipw_suspend),
 189         DEVMETHOD(device_resume,        ipw_resume),
 190
 191         DEVMETHOD_END
 192 };
 193
 194 static driver_t ipw_driver = {
 195         "ipw",
 196         ipw_methods,
 197         sizeof (struct ipw_softc)
 198 };
 199
 200 static devclass_t ipw_devclass;
 201
 202 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, NULL, NULL);
 203
 204 MODULE_VERSION(ipw, 1);
 205
 206 static int
 207 ipw_probe(device_t dev)
 208 {
 209         const struct ipw_ident *ident;
 210
 211         for (ident = ipw_ident_table; ident->name != NULL; ident++) {
 212                 if (pci_get_vendor(dev) == ident->vendor &&
 213                     pci_get_device(dev) == ident->device) {
 214                         device_set_desc(dev, ident->name);
 215                         return (BUS_PROBE_DEFAULT);
 216                 }
 217         }
 218         return ENXIO;
 219 }
 220
 221 /* Base Address Register */
 222 static int
 223 ipw_attach(device_t dev)
 224 {
 225         struct ipw_softc *sc = device_get_softc(dev);
 226         struct ieee80211com *ic = &sc->sc_ic;
 227         uint16_t val;
 228         int error, i;
 229
 230         sc->sc_dev = dev;
 231
 232         mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
 233             MTX_DEF | MTX_RECURSE);
 234         mbufq_init(&sc->sc_snd, ifqmaxlen);
 235         TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc);
 236         callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
 237
 238         pci_write_config(dev, 0x41, 0, 1);
 239
 240         /* enable bus-mastering */
 241         pci_enable_busmaster(dev);
 242
 243         i = PCIR_BAR(0);
 244         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
 245         if (sc->mem == NULL) {
 246                 device_printf(dev, "could not allocate memory resource\n");
 247                 goto fail;
 248         }
 249
 250         sc->sc_st = rman_get_bustag(sc->mem);
 251         sc->sc_sh = rman_get_bushandle(sc->mem);
 252
 253         i = 0;
 254         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
 255             RF_ACTIVE | RF_SHAREABLE);
 256         if (sc->irq == NULL) {
 257                 device_printf(dev, "could not allocate interrupt resource\n");
 258                 goto fail1;
 259         }
 260
 261         if (ipw_reset(sc) != 0) {
 262                 device_printf(dev, "could not reset adapter\n");
 263                 goto fail2;
 264         }
 265
 266         if (ipw_dma_alloc(sc) != 0) {
 267                 device_printf(dev, "could not allocate DMA resources\n");
 268                 goto fail2;
 269         }
 270
 271         ic->ic_softc = sc;
 272         ic->ic_name = device_get_nameunit(dev);
 273         ic->ic_opmode = IEEE80211_M_STA;
 274         ic->ic_phytype = IEEE80211_T_DS;
 275
 276         /* set device capabilities */
 277         ic->ic_caps =
 278                   IEEE80211_C_STA               /* station mode supported */
 279                 | IEEE80211_C_IBSS              /* IBSS mode supported */
 280                 | IEEE80211_C_MONITOR           /* monitor mode supported */
 281                 | IEEE80211_C_PMGT              /* power save supported */
 282                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 283                 | IEEE80211_C_WPA               /* 802.11i supported */
 284                 ;
 285
 286         /* read MAC address from EEPROM */
 287         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0);
 288         ic->ic_macaddr[0] = val >> 8;
 289         ic->ic_macaddr[1] = val & 0xff;
 290         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1);
 291         ic->ic_macaddr[2] = val >> 8;
 292         ic->ic_macaddr[3] = val & 0xff;
 293         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2);
 294         ic->ic_macaddr[4] = val >> 8;
 295         ic->ic_macaddr[5] = val & 0xff;
 296
 297         sc->chanmask = ipw_read_chanmask(sc);
 298         ipw_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
 299             ic->ic_channels);
 300
 301         /* check support for radio transmitter switch in EEPROM */
 302         if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8))
 303                 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH;
 304
 305         ieee80211_ifattach(ic);
 306         ic->ic_scan_start = ipw_scan_start;
 307         ic->ic_scan_end = ipw_scan_end;
 308         ic->ic_getradiocaps = ipw_getradiocaps;
 309         ic->ic_set_channel = ipw_set_channel;
 310         ic->ic_scan_curchan = ipw_scan_curchan;
 311         ic->ic_scan_mindwell = ipw_scan_mindwell;
 312         ic->ic_raw_xmit = ipw_raw_xmit;
 313         ic->ic_vap_create = ipw_vap_create;
 314         ic->ic_vap_delete = ipw_vap_delete;
 315         ic->ic_transmit = ipw_transmit;
 316         ic->ic_parent = ipw_parent;
 317
 318         ieee80211_radiotap_attach(ic,
 319             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 320                 IPW_TX_RADIOTAP_PRESENT,
 321             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 322                 IPW_RX_RADIOTAP_PRESENT);
 323
 324         /*
 325          * Add a few sysctl knobs.
 326          */
 327         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 328             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio",
 329             CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I",
 330             "radio transmitter switch state (0=off, 1=on)");
 331
 332         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 333             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
 334             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S",
 335             "statistics");
 336
 337         /*
 338          * Hook our interrupt after all initialization is complete.
 339          */
 340         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 341             NULL, ipw_intr, sc, &sc->sc_ih);
 342         if (error != 0) {
 343                 device_printf(dev, "could not set up interrupt\n");
 344                 goto fail3;
 345         }
 346
 347         if (bootverbose)
 348                 ieee80211_announce(ic);
 349
 350         return 0;
 351 fail3:
 352         ipw_release(sc);
 353 fail2:
 354         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 355 fail1:
 356         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
 357             sc->mem);
 358 fail:
 359         mtx_destroy(&sc->sc_mtx);
 360         return ENXIO;
 361 }
 362
 363 static int
 364 ipw_detach(device_t dev)
 365 {
 366         struct ipw_softc *sc = device_get_softc(dev);
 367         struct ieee80211com *ic = &sc->sc_ic;
 368
 369         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 370
 371         ieee80211_draintask(ic, &sc->sc_init_task);
 372         ipw_stop(sc);
 373
 374         ieee80211_ifdetach(ic);
 375
 376         callout_drain(&sc->sc_wdtimer);
 377         mbufq_drain(&sc->sc_snd);
 378
 379         ipw_release(sc);
 380
 381         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 382
 383         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
 384             sc->mem);
 385
 386         if (sc->sc_firmware != NULL) {
 387                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 388                 sc->sc_firmware = NULL;
 389         }
 390
 391         mtx_destroy(&sc->sc_mtx);
 392
 393         return 0;
 394 }
 395
 396 static struct ieee80211vap *
 397 ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 398     enum ieee80211_opmode opmode, int flags,
 399     const uint8_t bssid[IEEE80211_ADDR_LEN],
 400     const uint8_t mac[IEEE80211_ADDR_LEN])
 401 {
 402         struct ipw_softc *sc = ic->ic_softc;
 403         struct ipw_vap *ivp;
 404         struct ieee80211vap *vap;
 405         const struct firmware *fp;
 406         const struct ipw_firmware_hdr *hdr;
 407         const char *imagename;
 408
 409         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 410                 return NULL;
 411
 412         switch (opmode) {
 413         case IEEE80211_M_STA:
 414                 imagename = "ipw_bss";
 415                 break;
 416         case IEEE80211_M_IBSS:
 417                 imagename = "ipw_ibss";
 418                 break;
 419         case IEEE80211_M_MONITOR:
 420                 imagename = "ipw_monitor";
 421                 break;
 422         default:
 423                 return NULL;
 424         }
 425
 426         /*
 427          * Load firmware image using the firmware(9) subsystem.  Doing
 428          * this unlocked is ok since we're single-threaded by the
 429          * 802.11 layer.
 430          */
 431         if (sc->sc_firmware == NULL ||
 432             strcmp(sc->sc_firmware->name, imagename) != 0) {
 433                 if (sc->sc_firmware != NULL)
 434                         firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 435                 sc->sc_firmware = firmware_get(imagename);
 436         }
 437         if (sc->sc_firmware == NULL) {
 438                 device_printf(sc->sc_dev,
 439                     "could not load firmware image '%s'\n", imagename);
 440                 return NULL;
 441         }
 442         fp = sc->sc_firmware;
 443         if (fp->datasize < sizeof *hdr) {
 444                 device_printf(sc->sc_dev,
 445                     "firmware image too short %zu\n", fp->datasize);
 446                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 447                 sc->sc_firmware = NULL;
 448                 return NULL;
 449         }
 450         hdr = (const struct ipw_firmware_hdr *)fp->data;
 451         if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) +
 452             le32toh(hdr->ucodesz)) {
 453                 device_printf(sc->sc_dev,
 454                     "firmware image too short %zu\n", fp->datasize);
 455                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 456                 sc->sc_firmware = NULL;
 457                 return NULL;
 458         }
 459
 460         ivp = malloc(sizeof(struct ipw_vap), M_80211_VAP, M_WAITOK | M_ZERO);
 461         vap = &ivp->vap;
 462
 463         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
 464         /* override with driver methods */
 465         ivp->newstate = vap->iv_newstate;
 466         vap->iv_newstate = ipw_newstate;
 467
 468         /* complete setup */
 469         ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status,
 470             mac);
 471         ic->ic_opmode = opmode;
 472         return vap;
 473 }
 474
 475 static void
 476 ipw_vap_delete(struct ieee80211vap *vap)
 477 {
 478         struct ipw_vap *ivp = IPW_VAP(vap);
 479
 480         ieee80211_vap_detach(vap);
 481         free(ivp, M_80211_VAP);
 482 }
 483
 484 static int
 485 ipw_dma_alloc(struct ipw_softc *sc)
 486 {
 487         struct ipw_soft_bd *sbd;
 488         struct ipw_soft_hdr *shdr;
 489         struct ipw_soft_buf *sbuf;
 490         bus_addr_t physaddr;
 491         int error, i;
 492
 493         /*
 494          * Allocate parent DMA tag for subsequent allocations.
 495          */
 496         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 497             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 498             BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED,
 499             BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat);
 500         if (error != 0) {
 501                 device_printf(sc->sc_dev, "could not create parent DMA tag\n");
 502                 goto fail;
 503         }
 504
 505         /*
 506          * Allocate and map tx ring.
 507          */
 508         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 509             BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL,
 510             NULL, &sc->tbd_dmat);
 511         if (error != 0) {
 512                 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
 513                 goto fail;
 514         }
 515
 516         error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list,
 517             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map);
 518         if (error != 0) {
 519                 device_printf(sc->sc_dev,
 520                     "could not allocate tx ring DMA memory\n");
 521                 goto fail;
 522         }
 523
 524         error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list,
 525             IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0);
 526         if (error != 0) {
 527                 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n");
 528                 goto fail;
 529         }
 530
 531         /*
 532          * Allocate and map rx ring.
 533          */
 534         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 535             BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL,
 536             NULL, &sc->rbd_dmat);
 537         if (error != 0) {
 538                 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n");
 539                 goto fail;
 540         }
 541
 542         error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list,
 543             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map);
 544         if (error != 0) {
 545                 device_printf(sc->sc_dev,
 546                     "could not allocate rx ring DMA memory\n");
 547                 goto fail;
 548         }
 549
 550         error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list,
 551             IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0);
 552         if (error != 0) {
 553                 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n");
 554                 goto fail;
 555         }
 556
 557         /*
 558          * Allocate and map status ring.
 559          */
 560         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 561             BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0,
 562             NULL, NULL, &sc->status_dmat);
 563         if (error != 0) {
 564                 device_printf(sc->sc_dev,
 565                     "could not create status ring DMA tag\n");
 566                 goto fail;
 567         }
 568
 569         error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list,
 570             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map);
 571         if (error != 0) {
 572                 device_printf(sc->sc_dev,
 573                     "could not allocate status ring DMA memory\n");
 574                 goto fail;
 575         }
 576
 577         error = bus_dmamap_load(sc->status_dmat, sc->status_map,
 578             sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys,
 579             0);
 580         if (error != 0) {
 581                 device_printf(sc->sc_dev,
 582                     "could not map status ring DMA memory\n");
 583                 goto fail;
 584         }
 585
 586         /*
 587          * Allocate command DMA map.
 588          */
 589         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 590             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1,
 591             sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat);
 592         if (error != 0) {
 593                 device_printf(sc->sc_dev, "could not create command DMA tag\n");
 594                 goto fail;
 595         }
 596
 597         error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map);
 598         if (error != 0) {
 599                 device_printf(sc->sc_dev,
 600                     "could not create command DMA map\n");
 601                 goto fail;
 602         }
 603
 604         /*
 605          * Allocate headers DMA maps.
 606          */
 607         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 608             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1,
 609             sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat);
 610         if (error != 0) {
 611                 device_printf(sc->sc_dev, "could not create header DMA tag\n");
 612                 goto fail;
 613         }
 614
 615         SLIST_INIT(&sc->free_shdr);
 616         for (i = 0; i < IPW_NDATA; i++) {
 617                 shdr = &sc->shdr_list[i];
 618                 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map);
 619                 if (error != 0) {
 620                         device_printf(sc->sc_dev,
 621                             "could not create header DMA map\n");
 622                         goto fail;
 623                 }
 624                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
 625         }
 626
 627         /*
 628          * Allocate tx buffers DMA maps.
 629          */
 630         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 631             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0,
 632             NULL, NULL, &sc->txbuf_dmat);
 633         if (error != 0) {
 634                 device_printf(sc->sc_dev, "could not create tx DMA tag\n");
 635                 goto fail;
 636         }
 637
 638         SLIST_INIT(&sc->free_sbuf);
 639         for (i = 0; i < IPW_NDATA; i++) {
 640                 sbuf = &sc->tx_sbuf_list[i];
 641                 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map);
 642                 if (error != 0) {
 643                         device_printf(sc->sc_dev,
 644                             "could not create tx DMA map\n");
 645                         goto fail;
 646                 }
 647                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
 648         }
 649
 650         /*
 651          * Initialize tx ring.
 652          */
 653         for (i = 0; i < IPW_NTBD; i++) {
 654                 sbd = &sc->stbd_list[i];
 655                 sbd->bd = &sc->tbd_list[i];
 656                 sbd->type = IPW_SBD_TYPE_NOASSOC;
 657         }
 658
 659         /*
 660          * Pre-allocate rx buffers and DMA maps.
 661          */
 662         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 663             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
 664             NULL, &sc->rxbuf_dmat);
 665         if (error != 0) {
 666                 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
 667                 goto fail;
 668         }
 669
 670         for (i = 0; i < IPW_NRBD; i++) {
 671                 sbd = &sc->srbd_list[i];
 672                 sbuf = &sc->rx_sbuf_list[i];
 673                 sbd->bd = &sc->rbd_list[i];
 674
 675                 sbuf->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 676                 if (sbuf->m == NULL) {
 677                         device_printf(sc->sc_dev,
 678                             "could not allocate rx mbuf\n");
 679                         error = ENOMEM;
 680                         goto fail;
 681                 }
 682
 683                 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map);
 684                 if (error != 0) {
 685                         device_printf(sc->sc_dev,
 686                             "could not create rx DMA map\n");
 687                         goto fail;
 688                 }
 689
 690                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
 691                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
 692                     &physaddr, 0);
 693                 if (error != 0) {
 694                         device_printf(sc->sc_dev,
 695                             "could not map rx DMA memory\n");
 696                         goto fail;
 697                 }
 698
 699                 sbd->type = IPW_SBD_TYPE_DATA;
 700                 sbd->priv = sbuf;
 701                 sbd->bd->physaddr = htole32(physaddr);
 702                 sbd->bd->len = htole32(MCLBYTES);
 703         }
 704
 705         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
 706
 707         return 0;
 708
 709 fail:   ipw_release(sc);
 710         return error;
 711 }
 712
 713 static void
 714 ipw_release(struct ipw_softc *sc)
 715 {
 716         struct ipw_soft_buf *sbuf;
 717         int i;
 718
 719         if (sc->parent_dmat != NULL) {
 720                 bus_dma_tag_destroy(sc->parent_dmat);
 721         }
 722
 723         if (sc->tbd_dmat != NULL) {
 724                 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map);
 725                 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, sc->tbd_map);
 726                 bus_dma_tag_destroy(sc->tbd_dmat);
 727         }
 728
 729         if (sc->rbd_dmat != NULL) {
 730                 if (sc->rbd_list != NULL) {
 731                         bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map);
 732                         bus_dmamem_free(sc->rbd_dmat, sc->rbd_list,
 733                             sc->rbd_map);
 734                 }
 735                 bus_dma_tag_destroy(sc->rbd_dmat);
 736         }
 737
 738         if (sc->status_dmat != NULL) {
 739                 if (sc->status_list != NULL) {
 740                         bus_dmamap_unload(sc->status_dmat, sc->status_map);
 741                         bus_dmamem_free(sc->status_dmat, sc->status_list,
 742                             sc->status_map);
 743                 }
 744                 bus_dma_tag_destroy(sc->status_dmat);
 745         }
 746
 747         for (i = 0; i < IPW_NTBD; i++)
 748                 ipw_release_sbd(sc, &sc->stbd_list[i]);
 749
 750         if (sc->cmd_dmat != NULL) {
 751                 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map);
 752                 bus_dma_tag_destroy(sc->cmd_dmat);
 753         }
 754
 755         if (sc->hdr_dmat != NULL) {
 756                 for (i = 0; i < IPW_NDATA; i++)
 757                         bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map);
 758                 bus_dma_tag_destroy(sc->hdr_dmat);
 759         }
 760
 761         if (sc->txbuf_dmat != NULL) {
 762                 for (i = 0; i < IPW_NDATA; i++) {
 763                         bus_dmamap_destroy(sc->txbuf_dmat,
 764                             sc->tx_sbuf_list[i].map);
 765                 }
 766                 bus_dma_tag_destroy(sc->txbuf_dmat);
 767         }
 768
 769         if (sc->rxbuf_dmat != NULL) {
 770                 for (i = 0; i < IPW_NRBD; i++) {
 771                         sbuf = &sc->rx_sbuf_list[i];
 772                         if (sbuf->m != NULL) {
 773                                 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map,
 774                                     BUS_DMASYNC_POSTREAD);
 775                                 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
 776                                 m_freem(sbuf->m);
 777                         }
 778                         bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map);
 779                 }
 780                 bus_dma_tag_destroy(sc->rxbuf_dmat);
 781         }
 782 }
 783
 784 static int
 785 ipw_shutdown(device_t dev)
 786 {
 787         struct ipw_softc *sc = device_get_softc(dev);
 788
 789         ipw_stop(sc);
 790
 791         return 0;
 792 }
 793
 794 static int
 795 ipw_suspend(device_t dev)
 796 {
 797         struct ipw_softc *sc = device_get_softc(dev);
 798         struct ieee80211com *ic = &sc->sc_ic;
 799
 800         ieee80211_suspend_all(ic);
 801         return 0;
 802 }
 803
 804 static int
 805 ipw_resume(device_t dev)
 806 {
 807         struct ipw_softc *sc = device_get_softc(dev);
 808         struct ieee80211com *ic = &sc->sc_ic;
 809
 810         pci_write_config(dev, 0x41, 0, 1);
 811
 812         ieee80211_resume_all(ic);
 813         return 0;
 814 }
 815
 816 static int
 817 ipw_cvtrate(int ipwrate)
 818 {
 819         switch (ipwrate) {
 820         case IPW_RATE_DS1:      return 2;
 821         case IPW_RATE_DS2:      return 4;
 822         case IPW_RATE_DS5:      return 11;
 823         case IPW_RATE_DS11:     return 22;
 824         }
 825         return 0;
 826 }
 827
 828 /*
 829  * The firmware automatically adapts the transmit speed. We report its current
 830  * value here.
 831  */
 832 static void
 833 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 834 {
 835         struct ieee80211vap *vap = ifp->if_softc;
 836         struct ieee80211com *ic = vap->iv_ic;
 837         struct ipw_softc *sc = ic->ic_softc;
 838
 839         /* read current transmission rate from adapter */
 840         vap->iv_bss->ni_txrate = ipw_cvtrate(
 841             ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf);
 842         ieee80211_media_status(ifp, imr);
 843 }
 844
 845 static int
 846 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 847 {
 848         struct ipw_vap *ivp = IPW_VAP(vap);
 849         struct ieee80211com *ic = vap->iv_ic;
 850         struct ipw_softc *sc = ic->ic_softc;
 851         enum ieee80211_state ostate;
 852
 853         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
 854                 ieee80211_state_name[vap->iv_state],
 855                 ieee80211_state_name[nstate], sc->flags));
 856
 857         ostate = vap->iv_state;
 858         IEEE80211_UNLOCK(ic);
 859
 860         switch (nstate) {
 861         case IEEE80211_S_RUN:
 862                 if (ic->ic_opmode == IEEE80211_M_IBSS) {
 863                         /*
 864                          * XXX when joining an ibss network we are called
 865                          * with a SCAN -> RUN transition on scan complete.
 866                          * Use that to call ipw_assoc.  On completing the
 867                          * join we are then called again with an AUTH -> RUN
 868                          * transition and we want to do nothing.  This is
 869                          * all totally bogus and needs to be redone.
 870                          */
 871                         if (ostate == IEEE80211_S_SCAN)
 872                                 ipw_assoc(ic, vap);
 873                 }
 874                 break;
 875
 876         case IEEE80211_S_INIT:
 877                 if (sc->flags & IPW_FLAG_ASSOCIATED)
 878                         ipw_disassoc(ic, vap);
 879                 break;
 880
 881         case IEEE80211_S_AUTH:
 882                 /*
 883                  * Move to ASSOC state after the ipw_assoc() call.  Firmware
 884                  * takes care of authentication, after the call we'll receive
 885                  * only an assoc response which would otherwise be discared
 886                  * if we are still in AUTH state.
 887                  */
 888                 nstate = IEEE80211_S_ASSOC;
 889                 ipw_assoc(ic, vap);
 890                 break;
 891
 892         case IEEE80211_S_ASSOC:
 893                 /*
 894                  * If we are not transitioning from AUTH then resend the
 895                  * association request.
 896                  */
 897                 if (ostate != IEEE80211_S_AUTH)
 898                         ipw_assoc(ic, vap);
 899                 break;
 900
 901         default:
 902                 break;
 903         }
 904         IEEE80211_LOCK(ic);
 905         return ivp->newstate(vap, nstate, arg);
 906 }
 907
 908 /*
 909  * Read 16 bits at address 'addr' from the serial EEPROM.
 910  */
 911 static uint16_t
 912 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr)
 913 {
 914         uint32_t tmp;
 915         uint16_t val;
 916         int n;
 917
 918         /* clock C once before the first command */
 919         IPW_EEPROM_CTL(sc, 0);
 920         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 921         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 922         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 923
 924         /* write start bit (1) */
 925         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 926         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 927
 928         /* write READ opcode (10) */
 929         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 930         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 931         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 932         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 933
 934         /* write address A7-A0 */
 935         for (n = 7; n >= 0; n--) {
 936                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 937                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D));
 938                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 939                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C);
 940         }
 941
 942         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 943
 944         /* read data Q15-Q0 */
 945         val = 0;
 946         for (n = 15; n >= 0; n--) {
 947                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 948                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 949                 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL);
 950                 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n;
 951         }
 952
 953         IPW_EEPROM_CTL(sc, 0);
 954
 955         /* clear Chip Select and clock C */
 956         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 957         IPW_EEPROM_CTL(sc, 0);
 958         IPW_EEPROM_CTL(sc, IPW_EEPROM_C);
 959
 960         return le16toh(val);
 961 }
 962
 963 static uint16_t
 964 ipw_read_chanmask(struct ipw_softc *sc)
 965 {
 966         uint16_t val;
 967
 968         /* set supported .11b channels (read from EEPROM) */
 969         if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0)
 970                 val = 0x7ff;    /* default to channels 1-11 */
 971         val <<= 1;
 972
 973         return (val);
 974 }
 975
 976 static void
 977 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
 978 {
 979         struct ipw_cmd *cmd;
 980
 981         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
 982
 983         cmd = mtod(sbuf->m, struct ipw_cmd *);
 984
 985         DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n",
 986             ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type),
 987             le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len),
 988             le32toh(cmd->status)));
 989
 990         sc->flags &= ~IPW_FLAG_BUSY;
 991         wakeup(sc);
 992 }
 993
 994 static void
 995 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
 996 {
 997 #define IEEESTATE(vap)  ieee80211_state_name[vap->iv_state]
 998         struct ieee80211com *ic = &sc->sc_ic;
 999         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1000         uint32_t state;
1001
1002         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1003
1004         state = le32toh(*mtod(sbuf->m, uint32_t *));
1005
1006         switch (state) {
1007         case IPW_STATE_ASSOCIATED:
1008                 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n",
1009                         IEEESTATE(vap), sc->flags));
1010                 /* XXX suppress state change in case the fw auto-associates */
1011                 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) {
1012                         DPRINTF(("Unexpected association (%s, flags 0x%x)\n",
1013                                 IEEESTATE(vap), sc->flags));
1014                         break;
1015                 }
1016                 sc->flags &= ~IPW_FLAG_ASSOCIATING;
1017                 sc->flags |= IPW_FLAG_ASSOCIATED;
1018                 break;
1019
1020         case IPW_STATE_SCANNING:
1021                 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n",
1022                         IEEESTATE(vap), sc->flags));
1023                 /*
1024                  * NB: Check driver state for association on assoc
1025                  * loss as the firmware will immediately start to
1026                  * scan and we would treat it as a beacon miss if
1027                  * we checked the 802.11 layer state.
1028                  */
1029                 if (sc->flags & IPW_FLAG_ASSOCIATED) {
1030                         IPW_UNLOCK(sc);
1031                         /* XXX probably need to issue disassoc to fw */
1032                         ieee80211_beacon_miss(ic);
1033                         IPW_LOCK(sc);
1034                 }
1035                 break;
1036
1037         case IPW_STATE_SCAN_COMPLETE:
1038                 /*
1039                  * XXX For some reason scan requests generate scan
1040                  * started + scan done events before any traffic is
1041                  * received (e.g. probe response frames).  We work
1042                  * around this by marking the HACK flag and skipping
1043                  * the first scan complete event.
1044                 */
1045                 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n",
1046                             IEEESTATE(vap), sc->flags));
1047                 if (sc->flags & IPW_FLAG_HACK) {
1048                         sc->flags &= ~IPW_FLAG_HACK;
1049                         break;
1050                 }
1051                 if (sc->flags & IPW_FLAG_SCANNING) {
1052                         IPW_UNLOCK(sc);
1053                         ieee80211_scan_done(vap);
1054                         IPW_LOCK(sc);
1055                         sc->flags &= ~IPW_FLAG_SCANNING;
1056                         sc->sc_scan_timer = 0;
1057                 }
1058                 break;
1059
1060         case IPW_STATE_ASSOCIATION_LOST:
1061                 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n",
1062                         IEEESTATE(vap), sc->flags));
1063                 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1064                 if (vap->iv_state == IEEE80211_S_RUN) {
1065                         IPW_UNLOCK(sc);
1066                         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1067                         IPW_LOCK(sc);
1068                 }
1069                 break;
1070
1071         case IPW_STATE_DISABLED:
1072                 /* XXX? is this right? */
1073                 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING |
1074                     IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1075                 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n",
1076                         IEEESTATE(vap), sc->flags));
1077                 break;
1078
1079         case IPW_STATE_RADIO_DISABLED:
1080                 device_printf(sc->sc_dev, "radio turned off\n");
1081                 ieee80211_notify_radio(ic, 0);
1082                 ipw_stop_locked(sc);
1083                 /* XXX start polling thread to detect radio on */
1084                 break;
1085
1086         default:
1087                 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n",
1088                         __func__, state, IEEESTATE(vap), sc->flags));
1089                 break;
1090         }
1091 #undef IEEESTATE
1092 }
1093
1094 /*
1095  * Set driver state for current channel.
1096  */
1097 static void
1098 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan)
1099 {
1100         struct ieee80211com *ic = &sc->sc_ic;
1101
1102         ic->ic_curchan = chan;
1103         ieee80211_radiotap_chan_change(ic);
1104 }
1105
1106 /*
1107  * XXX: Hack to set the current channel to the value advertised in beacons or
1108  * probe responses. Only used during AP detection.
1109  */
1110 static void
1111 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m)
1112 {
1113         struct ieee80211com *ic = &sc->sc_ic;
1114         struct ieee80211_channel *c;
1115         struct ieee80211_frame *wh;
1116         uint8_t subtype;
1117         uint8_t *frm, *efrm;
1118
1119         wh = mtod(m, struct ieee80211_frame *);
1120
1121         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
1122                 return;
1123
1124         subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1125
1126         if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1127             subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1128                 return;
1129
1130         /* XXX use ieee80211_parse_beacon */
1131         frm = (uint8_t *)(wh + 1);
1132         efrm = mtod(m, uint8_t *) + m->m_len;
1133
1134         frm += 12;      /* skip tstamp, bintval and capinfo fields */
1135         while (frm < efrm) {
1136                 if (*frm == IEEE80211_ELEMID_DSPARMS)
1137 #if IEEE80211_CHAN_MAX < 255
1138                 if (frm[2] <= IEEE80211_CHAN_MAX)
1139 #endif
1140                 {
1141                         DPRINTF(("Fixing channel to %d\n", frm[2]));
1142                         c = ieee80211_find_channel(ic,
1143                                 ieee80211_ieee2mhz(frm[2], 0),
1144                                 IEEE80211_CHAN_B);
1145                         if (c == NULL)
1146                                 c = &ic->ic_channels[0];
1147                         ipw_setcurchan(sc, c);
1148                 }
1149
1150                 frm += frm[1] + 2;
1151         }
1152 }
1153
1154 static void
1155 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status,
1156     struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf)
1157 {
1158         struct ieee80211com *ic = &sc->sc_ic;
1159         struct mbuf *mnew, *m;
1160         struct ieee80211_node *ni;
1161         bus_addr_t physaddr;
1162         int error;
1163         int8_t rssi, nf;
1164
1165         DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len),
1166             status->rssi));
1167
1168         if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) ||
1169             le32toh(status->len) > MCLBYTES)
1170                 return;
1171
1172         /*
1173          * Try to allocate a new mbuf for this ring element and load it before
1174          * processing the current mbuf. If the ring element cannot be loaded,
1175          * drop the received packet and reuse the old mbuf. In the unlikely
1176          * case that the old mbuf can't be reloaded either, explicitly panic.
1177          */
1178         mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1179         if (mnew == NULL) {
1180                 counter_u64_add(ic->ic_ierrors, 1);
1181                 return;
1182         }
1183
1184         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1185         bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
1186
1187         error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *),
1188             MCLBYTES, ipw_dma_map_addr, &physaddr, 0);
1189         if (error != 0) {
1190                 m_freem(mnew);
1191
1192                 /* try to reload the old mbuf */
1193                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
1194                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
1195                     &physaddr, 0);
1196                 if (error != 0) {
1197                         /* very unlikely that it will fail... */
1198                         panic("%s: could not load old rx mbuf",
1199                             device_get_name(sc->sc_dev));
1200                 }
1201                 counter_u64_add(ic->ic_ierrors, 1);
1202                 return;
1203         }
1204
1205         /*
1206          * New mbuf successfully loaded, update Rx ring and continue
1207          * processing.
1208          */
1209         m = sbuf->m;
1210         sbuf->m = mnew;
1211         sbd->bd->physaddr = htole32(physaddr);
1212         m->m_pkthdr.len = m->m_len = le32toh(status->len);
1213
1214         rssi = status->rssi + IPW_RSSI_TO_DBM;
1215         nf = -95;
1216         if (ieee80211_radiotap_active(ic)) {
1217                 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap;
1218
1219                 tap->wr_flags = 0;
1220                 tap->wr_antsignal = rssi;
1221                 tap->wr_antnoise = nf;
1222         }
1223
1224         if (sc->flags & IPW_FLAG_SCANNING)
1225                 ipw_fix_channel(sc, m);
1226
1227         IPW_UNLOCK(sc);
1228         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1229         if (ni != NULL) {
1230                 (void) ieee80211_input(ni, m, rssi - nf, nf);
1231                 ieee80211_free_node(ni);
1232         } else
1233                 (void) ieee80211_input_all(ic, m, rssi - nf, nf);
1234         IPW_LOCK(sc);
1235
1236         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1237 }
1238
1239 static void
1240 ipw_rx_intr(struct ipw_softc *sc)
1241 {
1242         struct ipw_status *status;
1243         struct ipw_soft_bd *sbd;
1244         struct ipw_soft_buf *sbuf;
1245         uint32_t r, i;
1246
1247         if (!(sc->flags & IPW_FLAG_FW_INITED))
1248                 return;
1249
1250         r = CSR_READ_4(sc, IPW_CSR_RX_READ);
1251
1252         bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD);
1253
1254         for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) {
1255                 status = &sc->status_list[i];
1256                 sbd = &sc->srbd_list[i];
1257                 sbuf = sbd->priv;
1258
1259                 switch (le16toh(status->code) & 0xf) {
1260                 case IPW_STATUS_CODE_COMMAND:
1261                         ipw_rx_cmd_intr(sc, sbuf);
1262                         break;
1263
1264                 case IPW_STATUS_CODE_NEWSTATE:
1265                         ipw_rx_newstate_intr(sc, sbuf);
1266                         break;
1267
1268                 case IPW_STATUS_CODE_DATA_802_3:
1269                 case IPW_STATUS_CODE_DATA_802_11:
1270                         ipw_rx_data_intr(sc, status, sbd, sbuf);
1271                         break;
1272
1273                 case IPW_STATUS_CODE_NOTIFICATION:
1274                         DPRINTFN(2, ("notification status, len %u flags 0x%x\n",
1275                             le32toh(status->len), status->flags));
1276                         /* XXX maybe drive state machine AUTH->ASSOC? */
1277                         break;
1278
1279                 default:
1280                         device_printf(sc->sc_dev, "unexpected status code %u\n",
1281                             le16toh(status->code));
1282                 }
1283
1284                 /* firmware was killed, stop processing received frames */
1285                 if (!(sc->flags & IPW_FLAG_FW_INITED))
1286                         return;
1287
1288                 sbd->bd->flags = 0;
1289         }
1290
1291         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1292
1293         /* kick the firmware */
1294         sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1;
1295         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
1296 }
1297
1298 static void
1299 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd)
1300 {
1301         struct ipw_soft_hdr *shdr;
1302         struct ipw_soft_buf *sbuf;
1303
1304         switch (sbd->type) {
1305         case IPW_SBD_TYPE_COMMAND:
1306                 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map,
1307                     BUS_DMASYNC_POSTWRITE);
1308                 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map);
1309                 break;
1310
1311         case IPW_SBD_TYPE_HEADER:
1312                 shdr = sbd->priv;
1313                 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE);
1314                 bus_dmamap_unload(sc->hdr_dmat, shdr->map);
1315                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
1316                 break;
1317
1318         case IPW_SBD_TYPE_DATA:
1319                 sbuf = sbd->priv;
1320                 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map,
1321                     BUS_DMASYNC_POSTWRITE);
1322                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1323                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
1324
1325                 if (sbuf->m->m_flags & M_TXCB)
1326                         ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/);
1327                 m_freem(sbuf->m);
1328                 ieee80211_free_node(sbuf->ni);
1329
1330                 sc->sc_tx_timer = 0;
1331                 break;
1332         }
1333
1334         sbd->type = IPW_SBD_TYPE_NOASSOC;
1335 }
1336
1337 static void
1338 ipw_tx_intr(struct ipw_softc *sc)
1339 {
1340         struct ipw_soft_bd *sbd;
1341         uint32_t r, i;
1342
1343         if (!(sc->flags & IPW_FLAG_FW_INITED))
1344                 return;
1345
1346         r = CSR_READ_4(sc, IPW_CSR_TX_READ);
1347
1348         for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) {
1349                 sbd = &sc->stbd_list[i];
1350                 ipw_release_sbd(sc, sbd);
1351                 sc->txfree++;
1352         }
1353
1354         /* remember what the firmware has processed */
1355         sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1;
1356
1357         ipw_start(sc);
1358 }
1359
1360 static void
1361 ipw_fatal_error_intr(struct ipw_softc *sc)
1362 {
1363         struct ieee80211com *ic = &sc->sc_ic;
1364         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1365
1366         device_printf(sc->sc_dev, "firmware error\n");
1367         if (vap != NULL) {
1368                 IPW_UNLOCK(sc);
1369                 ieee80211_cancel_scan(vap);
1370                 IPW_LOCK(sc);
1371         }
1372         ieee80211_runtask(ic, &sc->sc_init_task);
1373 }
1374
1375 static void
1376 ipw_intr(void *arg)
1377 {
1378         struct ipw_softc *sc = arg;
1379         uint32_t r;
1380
1381         IPW_LOCK(sc);
1382
1383         r = CSR_READ_4(sc, IPW_CSR_INTR);
1384         if (r == 0 || r == 0xffffffff)
1385                 goto done;
1386
1387         /* disable interrupts */
1388         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1389
1390         /* acknowledge all interrupts */
1391         CSR_WRITE_4(sc, IPW_CSR_INTR, r);
1392
1393         if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) {
1394                 ipw_fatal_error_intr(sc);
1395                 goto done;
1396         }
1397
1398         if (r & IPW_INTR_FW_INIT_DONE)
1399                 wakeup(sc);
1400
1401         if (r & IPW_INTR_RX_TRANSFER)
1402                 ipw_rx_intr(sc);
1403
1404         if (r & IPW_INTR_TX_TRANSFER)
1405                 ipw_tx_intr(sc);
1406
1407         /* re-enable interrupts */
1408         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1409 done:
1410         IPW_UNLOCK(sc);
1411 }
1412
1413 static void
1414 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1415 {
1416         if (error != 0)
1417                 return;
1418
1419         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1420
1421         *(bus_addr_t *)arg = segs[0].ds_addr;
1422 }
1423
1424 static const char *
1425 ipw_cmdname(int cmd)
1426 {
1427         static const struct {
1428                 int     cmd;
1429                 const char *name;
1430         } cmds[] = {
1431                 { IPW_CMD_ADD_MULTICAST,        "ADD_MULTICAST" },
1432                 { IPW_CMD_BROADCAST_SCAN,       "BROADCAST_SCAN" },
1433                 { IPW_CMD_DISABLE,              "DISABLE" },
1434                 { IPW_CMD_DISABLE_PHY,          "DISABLE_PHY" },
1435                 { IPW_CMD_ENABLE,               "ENABLE" },
1436                 { IPW_CMD_PREPARE_POWER_DOWN,   "PREPARE_POWER_DOWN" },
1437                 { IPW_CMD_SET_BASIC_TX_RATES,   "SET_BASIC_TX_RATES" },
1438                 { IPW_CMD_SET_BEACON_INTERVAL,  "SET_BEACON_INTERVAL" },
1439                 { IPW_CMD_SET_CHANNEL,          "SET_CHANNEL" },
1440                 { IPW_CMD_SET_CONFIGURATION,    "SET_CONFIGURATION" },
1441                 { IPW_CMD_SET_DESIRED_BSSID,    "SET_DESIRED_BSSID" },
1442                 { IPW_CMD_SET_ESSID,            "SET_ESSID" },
1443                 { IPW_CMD_SET_FRAG_THRESHOLD,   "SET_FRAG_THRESHOLD" },
1444                 { IPW_CMD_SET_MAC_ADDRESS,      "SET_MAC_ADDRESS" },
1445                 { IPW_CMD_SET_MANDATORY_BSSID,  "SET_MANDATORY_BSSID" },
1446                 { IPW_CMD_SET_MODE,             "SET_MODE" },
1447                 { IPW_CMD_SET_MSDU_TX_RATES,    "SET_MSDU_TX_RATES" },
1448                 { IPW_CMD_SET_POWER_MODE,       "SET_POWER_MODE" },
1449                 { IPW_CMD_SET_RTS_THRESHOLD,    "SET_RTS_THRESHOLD" },
1450                 { IPW_CMD_SET_SCAN_OPTIONS,     "SET_SCAN_OPTIONS" },
1451                 { IPW_CMD_SET_SECURITY_INFO,    "SET_SECURITY_INFO" },
1452                 { IPW_CMD_SET_TX_POWER_INDEX,   "SET_TX_POWER_INDEX" },
1453                 { IPW_CMD_SET_TX_RATES,         "SET_TX_RATES" },
1454                 { IPW_CMD_SET_WEP_FLAGS,        "SET_WEP_FLAGS" },
1455                 { IPW_CMD_SET_WEP_KEY,          "SET_WEP_KEY" },
1456                 { IPW_CMD_SET_WEP_KEY_INDEX,    "SET_WEP_KEY_INDEX" },
1457                 { IPW_CMD_SET_WPA_IE,           "SET_WPA_IE" },
1458
1459         };
1460         static char buf[12];
1461         int i;
1462
1463         for (i = 0; i < nitems(cmds); i++)
1464                 if (cmds[i].cmd == cmd)
1465                         return cmds[i].name;
1466         snprintf(buf, sizeof(buf), "%u", cmd);
1467         return buf;
1468 }
1469
1470 /*
1471  * Send a command to the firmware and wait for the acknowledgement.
1472  */
1473 static int
1474 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len)
1475 {
1476         struct ipw_soft_bd *sbd;
1477         bus_addr_t physaddr;
1478         int error;
1479
1480         IPW_LOCK_ASSERT(sc);
1481
1482         if (sc->flags & IPW_FLAG_BUSY) {
1483                 device_printf(sc->sc_dev, "%s: %s not sent, busy\n",
1484                         __func__, ipw_cmdname(type));
1485                 return EAGAIN;
1486         }
1487         sc->flags |= IPW_FLAG_BUSY;
1488
1489         sbd = &sc->stbd_list[sc->txcur];
1490
1491         error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd,
1492             sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0);
1493         if (error != 0) {
1494                 device_printf(sc->sc_dev, "could not map command DMA memory\n");
1495                 sc->flags &= ~IPW_FLAG_BUSY;
1496                 return error;
1497         }
1498
1499         sc->cmd.type = htole32(type);
1500         sc->cmd.subtype = 0;
1501         sc->cmd.len = htole32(len);
1502         sc->cmd.seq = 0;
1503         memcpy(sc->cmd.data, data, len);
1504
1505         sbd->type = IPW_SBD_TYPE_COMMAND;
1506         sbd->bd->physaddr = htole32(physaddr);
1507         sbd->bd->len = htole32(sizeof (struct ipw_cmd));
1508         sbd->bd->nfrag = 1;
1509         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND |
1510             IPW_BD_FLAG_TX_LAST_FRAGMENT;
1511
1512         bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE);
1513         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1514
1515 #ifdef IPW_DEBUG
1516         if (ipw_debug >= 4) {
1517                 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type,
1518                     0, 0, len);
1519                 /* Print the data buffer in the higher debug level */
1520                 if (ipw_debug >= 9 && len > 0) {
1521                         printf(" data: 0x");
1522                         for (int i = 1; i <= len; i++)
1523                                 printf("%1D", (u_char *)data + len - i, "");
1524                 }
1525                 printf("\n");
1526         }
1527 #endif
1528
1529         /* kick firmware */
1530         sc->txfree--;
1531         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1532         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1533
1534         /* wait at most one second for command to complete */
1535         error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz);
1536         if (error != 0) {
1537                 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n",
1538                     __func__, ipw_cmdname(type), error);
1539                 sc->flags &= ~IPW_FLAG_BUSY;
1540                 return (error);
1541         }
1542         return (0);
1543 }
1544
1545 static int
1546 ipw_tx_start(struct ipw_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1547 {
1548         struct ieee80211com *ic = &sc->sc_ic;
1549         struct ieee80211vap *vap = ni->ni_vap;
1550         struct ieee80211_frame *wh;
1551         struct ipw_soft_bd *sbd;
1552         struct ipw_soft_hdr *shdr;
1553         struct ipw_soft_buf *sbuf;
1554         struct ieee80211_key *k;
1555         struct mbuf *mnew;
1556         bus_dma_segment_t segs[IPW_MAX_NSEG];
1557         bus_addr_t physaddr;
1558         int nsegs, error, i;
1559
1560         wh = mtod(m0, struct ieee80211_frame *);
1561
1562         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1563                 k = ieee80211_crypto_encap(ni, m0);
1564                 if (k == NULL) {
1565                         m_freem(m0);
1566                         return ENOBUFS;
1567                 }
1568                 /* packet header may have moved, reset our local pointer */
1569                 wh = mtod(m0, struct ieee80211_frame *);
1570         }
1571
1572         if (ieee80211_radiotap_active_vap(vap)) {
1573                 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap;
1574
1575                 tap->wt_flags = 0;
1576
1577                 ieee80211_radiotap_tx(vap, m0);
1578         }
1579
1580         shdr = SLIST_FIRST(&sc->free_shdr);
1581         sbuf = SLIST_FIRST(&sc->free_sbuf);
1582         KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool"));
1583
1584         shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND);
1585         shdr->hdr.subtype = 0;
1586         shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) ? 1 : 0;
1587         shdr->hdr.encrypt = 0;
1588         shdr->hdr.keyidx = 0;
1589         shdr->hdr.keysz = 0;
1590         shdr->hdr.fragmentsz = 0;
1591         IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2);
1592         if (ic->ic_opmode == IEEE80211_M_STA)
1593                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3);
1594         else
1595                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1);
1596
1597         /* trim IEEE802.11 header */
1598         m_adj(m0, sizeof (struct ieee80211_frame));
1599
1600         error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs,
1601             &nsegs, 0);
1602         if (error != 0 && error != EFBIG) {
1603                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1604                     error);
1605                 m_freem(m0);
1606                 return error;
1607         }
1608         if (error != 0) {
1609                 mnew = m_defrag(m0, M_NOWAIT);
1610                 if (mnew == NULL) {
1611                         device_printf(sc->sc_dev,
1612                             "could not defragment mbuf\n");
1613                         m_freem(m0);
1614                         return ENOBUFS;
1615                 }
1616                 m0 = mnew;
1617
1618                 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0,
1619                     segs, &nsegs, 0);
1620                 if (error != 0) {
1621                         device_printf(sc->sc_dev,
1622                             "could not map mbuf (error %d)\n", error);
1623                         m_freem(m0);
1624                         return error;
1625                 }
1626         }
1627
1628         error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr,
1629             sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0);
1630         if (error != 0) {
1631                 device_printf(sc->sc_dev, "could not map header DMA memory\n");
1632                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1633                 m_freem(m0);
1634                 return error;
1635         }
1636
1637         SLIST_REMOVE_HEAD(&sc->free_sbuf, next);
1638         SLIST_REMOVE_HEAD(&sc->free_shdr, next);
1639
1640         sbd = &sc->stbd_list[sc->txcur];
1641         sbd->type = IPW_SBD_TYPE_HEADER;
1642         sbd->priv = shdr;
1643         sbd->bd->physaddr = htole32(physaddr);
1644         sbd->bd->len = htole32(sizeof (struct ipw_hdr));
1645         sbd->bd->nfrag = 1 + nsegs;
1646         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 |
1647             IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1648
1649         DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n",
1650             shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted,
1651             shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr,
1652             ":"));
1653
1654         sc->txfree--;
1655         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1656
1657         sbuf->m = m0;
1658         sbuf->ni = ni;
1659
1660         for (i = 0; i < nsegs; i++) {
1661                 sbd = &sc->stbd_list[sc->txcur];
1662
1663                 sbd->bd->physaddr = htole32(segs[i].ds_addr);
1664                 sbd->bd->len = htole32(segs[i].ds_len);
1665                 sbd->bd->nfrag = 0;
1666                 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3;
1667                 if (i == nsegs - 1) {
1668                         sbd->type = IPW_SBD_TYPE_DATA;
1669                         sbd->priv = sbuf;
1670                         sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT;
1671                 } else {
1672                         sbd->type = IPW_SBD_TYPE_NOASSOC;
1673                         sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1674                 }
1675
1676                 DPRINTFN(5, ("sending fragment (%d)\n", i));
1677
1678                 sc->txfree--;
1679                 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1680         }
1681
1682         bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE);
1683         bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE);
1684         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1685
1686         /* kick firmware */
1687         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1688
1689         return 0;
1690 }
1691
1692 static int
1693 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1694         const struct ieee80211_bpf_params *params)
1695 {
1696         /* no support; just discard */
1697         m_freem(m);
1698         ieee80211_free_node(ni);
1699         return 0;
1700 }
1701
1702 static int
1703 ipw_transmit(struct ieee80211com *ic, struct mbuf *m)
1704 {
1705         struct ipw_softc *sc = ic->ic_softc;
1706         int error;
1707
1708         IPW_LOCK(sc);
1709         if ((sc->flags & IPW_FLAG_RUNNING) == 0) {
1710                 IPW_UNLOCK(sc);
1711                 return (ENXIO);
1712         }
1713         error = mbufq_enqueue(&sc->sc_snd, m);
1714         if (error) {
1715                 IPW_UNLOCK(sc);
1716                 return (error);
1717         }
1718         ipw_start(sc);
1719         IPW_UNLOCK(sc);
1720         return (0);
1721 }
1722
1723 static void
1724 ipw_start(struct ipw_softc *sc)
1725 {
1726         struct ieee80211_node *ni;
1727         struct mbuf *m;
1728
1729         IPW_LOCK_ASSERT(sc);
1730
1731         while (sc->txfree < 1 + IPW_MAX_NSEG &&
1732             (m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
1733                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1734                 if (ipw_tx_start(sc, m, ni) != 0) {
1735                         if_inc_counter(ni->ni_vap->iv_ifp,
1736                             IFCOUNTER_OERRORS, 1);
1737                         ieee80211_free_node(ni);
1738                         break;
1739                 }
1740                 /* start watchdog timer */
1741                 sc->sc_tx_timer = 5;
1742         }
1743 }
1744
1745 static void
1746 ipw_watchdog(void *arg)
1747 {
1748         struct ipw_softc *sc = arg;
1749         struct ieee80211com *ic = &sc->sc_ic;
1750
1751         IPW_LOCK_ASSERT(sc);
1752
1753         if (sc->sc_tx_timer > 0) {
1754                 if (--sc->sc_tx_timer == 0) {
1755                         device_printf(sc->sc_dev, "device timeout\n");
1756                         counter_u64_add(ic->ic_oerrors, 1);
1757                         taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1758                 }
1759         }
1760         if (sc->sc_scan_timer > 0) {
1761                 if (--sc->sc_scan_timer == 0) {
1762                         DPRINTFN(3, ("Scan timeout\n"));
1763                         /* End the scan */
1764                         if (sc->flags & IPW_FLAG_SCANNING) {
1765                                 IPW_UNLOCK(sc);
1766                                 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps));
1767                                 IPW_LOCK(sc);
1768                                 sc->flags &= ~IPW_FLAG_SCANNING;
1769                         }
1770                 }
1771         }
1772         if (sc->flags & IPW_FLAG_RUNNING)
1773                 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
1774 }
1775
1776 static void
1777 ipw_parent(struct ieee80211com *ic)
1778 {
1779         struct ipw_softc *sc = ic->ic_softc;
1780         int startall = 0;
1781
1782         IPW_LOCK(sc);
1783         if (ic->ic_nrunning > 0) {
1784                 if (!(sc->flags & IPW_FLAG_RUNNING)) {
1785                         ipw_init_locked(sc);
1786                         startall = 1;
1787                 }
1788         } else if (sc->flags & IPW_FLAG_RUNNING)
1789                 ipw_stop_locked(sc);
1790         IPW_UNLOCK(sc);
1791         if (startall)
1792                 ieee80211_start_all(ic);
1793 }
1794
1795 static void
1796 ipw_stop_master(struct ipw_softc *sc)
1797 {
1798         uint32_t tmp;
1799         int ntries;
1800
1801         /* disable interrupts */
1802         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1803
1804         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER);
1805         for (ntries = 0; ntries < 50; ntries++) {
1806                 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED)
1807                         break;
1808                 DELAY(10);
1809         }
1810         if (ntries == 50)
1811                 device_printf(sc->sc_dev, "timeout waiting for master\n");
1812
1813         tmp = CSR_READ_4(sc, IPW_CSR_RST);
1814         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET);
1815
1816         /* Clear all flags except the following */
1817         sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH;
1818 }
1819
1820 static int
1821 ipw_reset(struct ipw_softc *sc)
1822 {
1823         uint32_t tmp;
1824         int ntries;
1825
1826         ipw_stop_master(sc);
1827
1828         /* move adapter to D0 state */
1829         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1830         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1831
1832         /* wait for clock stabilization */
1833         for (ntries = 0; ntries < 1000; ntries++) {
1834                 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY)
1835                         break;
1836                 DELAY(200);
1837         }
1838         if (ntries == 1000)
1839                 return EIO;
1840
1841         tmp =  CSR_READ_4(sc, IPW_CSR_RST);
1842         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET);
1843
1844         DELAY(10);
1845
1846         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1847         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1848
1849         return 0;
1850 }
1851
1852 static int
1853 ipw_waitfordisable(struct ipw_softc *sc, int waitfor)
1854 {
1855         int ms = hz < 1000 ? 1 : hz/10;
1856         int i, error;
1857
1858         for (i = 0; i < 100; i++) {
1859                 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor)
1860                         return 0;
1861                 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms);
1862                 if (error == 0 || error != EWOULDBLOCK)
1863                         return 0;
1864         }
1865         DPRINTF(("%s: timeout waiting for %s\n",
1866                 __func__, waitfor ? "disable" : "enable"));
1867         return ETIMEDOUT;
1868 }
1869
1870 static int
1871 ipw_enable(struct ipw_softc *sc)
1872 {
1873         int error;
1874
1875         if ((sc->flags & IPW_FLAG_ENABLED) == 0) {
1876                 DPRINTF(("Enable adapter\n"));
1877                 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
1878                 if (error != 0)
1879                         return error;
1880                 error = ipw_waitfordisable(sc, 0);
1881                 if (error != 0)
1882                         return error;
1883                 sc->flags |= IPW_FLAG_ENABLED;
1884         }
1885         return 0;
1886 }
1887
1888 static int
1889 ipw_disable(struct ipw_softc *sc)
1890 {
1891         int error;
1892
1893         if (sc->flags & IPW_FLAG_ENABLED) {
1894                 DPRINTF(("Disable adapter\n"));
1895                 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0);
1896                 if (error != 0)
1897                         return error;
1898                 error = ipw_waitfordisable(sc, 1);
1899                 if (error != 0)
1900                         return error;
1901                 sc->flags &= ~IPW_FLAG_ENABLED;
1902         }
1903         return 0;
1904 }
1905
1906 /*
1907  * Upload the microcode to the device.
1908  */
1909 static int
1910 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size)
1911 {
1912         int ntries;
1913
1914         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
1915         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1916
1917         MEM_WRITE_2(sc, 0x220000, 0x0703);
1918         MEM_WRITE_2(sc, 0x220000, 0x0707);
1919
1920         MEM_WRITE_1(sc, 0x210014, 0x72);
1921         MEM_WRITE_1(sc, 0x210014, 0x72);
1922
1923         MEM_WRITE_1(sc, 0x210000, 0x40);
1924         MEM_WRITE_1(sc, 0x210000, 0x00);
1925         MEM_WRITE_1(sc, 0x210000, 0x40);
1926
1927         MEM_WRITE_MULTI_1(sc, 0x210010, uc, size);
1928
1929         MEM_WRITE_1(sc, 0x210000, 0x00);
1930         MEM_WRITE_1(sc, 0x210000, 0x00);
1931         MEM_WRITE_1(sc, 0x210000, 0x80);
1932
1933         MEM_WRITE_2(sc, 0x220000, 0x0703);
1934         MEM_WRITE_2(sc, 0x220000, 0x0707);
1935
1936         MEM_WRITE_1(sc, 0x210014, 0x72);
1937         MEM_WRITE_1(sc, 0x210014, 0x72);
1938
1939         MEM_WRITE_1(sc, 0x210000, 0x00);
1940         MEM_WRITE_1(sc, 0x210000, 0x80);
1941
1942         for (ntries = 0; ntries < 10; ntries++) {
1943                 if (MEM_READ_1(sc, 0x210000) & 1)
1944                         break;
1945                 DELAY(10);
1946         }
1947         if (ntries == 10) {
1948                 device_printf(sc->sc_dev,
1949                     "timeout waiting for ucode to initialize\n");
1950                 return EIO;
1951         }
1952
1953         MEM_WRITE_4(sc, 0x3000e0, 0);
1954
1955         return 0;
1956 }
1957
1958 /* set of macros to handle unaligned little endian data in firmware image */
1959 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
1960 #define GETLE16(p) ((p)[0] | (p)[1] << 8)
1961 static int
1962 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size)
1963 {
1964         const uint8_t *p, *end;
1965         uint32_t tmp, dst;
1966         uint16_t len;
1967         int error;
1968
1969         p = fw;
1970         end = fw + size;
1971         while (p < end) {
1972                 dst = GETLE32(p); p += 4;
1973                 len = GETLE16(p); p += 2;
1974
1975                 ipw_write_mem_1(sc, dst, p, len);
1976                 p += len;
1977         }
1978
1979         CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK |
1980             IPW_IO_LED_OFF);
1981
1982         /* enable interrupts */
1983         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1984
1985         /* kick the firmware */
1986         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1987
1988         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1989         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY);
1990
1991         /* wait at most one second for firmware initialization to complete */
1992         if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) {
1993                 device_printf(sc->sc_dev, "timeout waiting for firmware "
1994                     "initialization to complete\n");
1995                 return error;
1996         }
1997
1998         tmp = CSR_READ_4(sc, IPW_CSR_IO);
1999         CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK |
2000             IPW_IO_GPIO3_MASK);
2001
2002         return 0;
2003 }
2004
2005 static int
2006 ipw_setwepkeys(struct ipw_softc *sc)
2007 {
2008         struct ieee80211com *ic = &sc->sc_ic;
2009         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2010         struct ipw_wep_key wepkey;
2011         struct ieee80211_key *wk;
2012         int error, i;
2013
2014         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2015                 wk = &vap->iv_nw_keys[i];
2016
2017                 if (wk->wk_cipher == NULL ||
2018                     wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP)
2019                         continue;
2020
2021                 wepkey.idx = i;
2022                 wepkey.len = wk->wk_keylen;
2023                 memset(wepkey.key, 0, sizeof wepkey.key);
2024                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2025                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2026                     wepkey.len));
2027                 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey,
2028                     sizeof wepkey);
2029                 if (error != 0)
2030                         return error;
2031         }
2032         return 0;
2033 }
2034
2035 static int
2036 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen)
2037 {
2038         struct ipw_wpa_ie wpaie;
2039
2040         memset(&wpaie, 0, sizeof(wpaie));
2041         wpaie.len = htole32(ielen);
2042         /* XXX verify length */
2043         memcpy(&wpaie.ie, ie, ielen);
2044         DPRINTF(("Setting WPA IE\n"));
2045         return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie));
2046 }
2047
2048 static int
2049 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid)
2050 {
2051         static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
2052
2053         if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) {
2054                 DPRINTF(("Setting mandatory BSSID to null\n"));
2055                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0);
2056         } else {
2057                 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":"));
2058                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID,
2059                         bssid, IEEE80211_ADDR_LEN);
2060         }
2061 }
2062
2063 static int
2064 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen)
2065 {
2066         if (ssidlen == 0) {
2067                 /*
2068                  * A bug in the firmware breaks the ``don't associate''
2069                  * bit in the scan options command.  To compensate for
2070                  * this install a bogus ssid when no ssid is specified
2071                  * so the firmware won't try to associate.
2072                  */
2073                 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n"));
2074                 return ipw_cmd(sc, IPW_CMD_SET_ESSID,
2075                         "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27"
2076                         "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31"
2077                         "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b"
2078                         "\x3c\x3d", IEEE80211_NWID_LEN);
2079         } else {
2080 #ifdef IPW_DEBUG
2081                 if (ipw_debug > 0) {
2082                         printf("Setting ESSID to ");
2083                         ieee80211_print_essid(ssid, ssidlen);
2084                         printf("\n");
2085                 }
2086 #endif
2087                 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen);
2088         }
2089 }
2090
2091 static int
2092 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags)
2093 {
2094         struct ipw_scan_options opts;
2095
2096         DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags));
2097         opts.channels = htole32(chanmask);
2098         opts.flags = htole32(flags);
2099         return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts));
2100 }
2101
2102 static int
2103 ipw_scan(struct ipw_softc *sc)
2104 {
2105         uint32_t params;
2106         int error;
2107
2108         DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags));
2109
2110         if (sc->flags & IPW_FLAG_SCANNING)
2111                 return (EBUSY);
2112         sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK;
2113
2114         /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */
2115         error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE);
2116         if (error != 0)
2117                 goto done;
2118
2119         /*
2120          * Setup null/bogus ssid so firmware doesn't use any previous
2121          * ssid to try and associate.  This is because the ``don't
2122          * associate'' option bit is broken (sigh).
2123          */
2124         error = ipw_setssid(sc, NULL, 0);
2125         if (error != 0)
2126                 goto done;
2127
2128         /*
2129          * NB: the adapter may be disabled on association lost;
2130          *     if so just re-enable it to kick off scanning.
2131          */
2132         DPRINTF(("Starting scan\n"));
2133         sc->sc_scan_timer = 3;
2134         if (sc->flags & IPW_FLAG_ENABLED) {
2135                 params = 0;                             /* XXX? */
2136                 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN,
2137                                 &params, sizeof(params));
2138         } else
2139                 error = ipw_enable(sc);
2140 done:
2141         if (error != 0) {
2142                 DPRINTF(("Scan failed\n"));
2143                 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK);
2144         }
2145         return (error);
2146 }
2147
2148 static int
2149 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan)
2150 {
2151         struct ieee80211com *ic = &sc->sc_ic;
2152         uint32_t data;
2153         int error;
2154
2155         data = htole32(ieee80211_chan2ieee(ic, chan));
2156         DPRINTF(("Setting channel to %u\n", le32toh(data)));
2157         error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data);
2158         if (error == 0)
2159                 ipw_setcurchan(sc, chan);
2160         return error;
2161 }
2162
2163 static void
2164 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2165 {
2166         struct ipw_softc *sc = ic->ic_softc;
2167         struct ieee80211_node *ni = vap->iv_bss;
2168         struct ipw_security security;
2169         uint32_t data;
2170         int error;
2171
2172         IPW_LOCK(sc);
2173         error = ipw_disable(sc);
2174         if (error != 0)
2175                 goto done;
2176
2177         memset(&security, 0, sizeof security);
2178         security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ?
2179             IPW_AUTH_SHARED : IPW_AUTH_OPEN;
2180         security.ciphers = htole32(IPW_CIPHER_NONE);
2181         DPRINTF(("Setting authmode to %u\n", security.authmode));
2182         error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security,
2183             sizeof security);
2184         if (error != 0)
2185                 goto done;
2186
2187         data = htole32(vap->iv_rtsthreshold);
2188         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2189         error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2190         if (error != 0)
2191                 goto done;
2192
2193         data = htole32(vap->iv_fragthreshold);
2194         DPRINTF(("Setting frag threshold to %u\n", le32toh(data)));
2195         error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2196         if (error != 0)
2197                 goto done;
2198
2199         if (vap->iv_flags & IEEE80211_F_PRIVACY) {
2200                 error = ipw_setwepkeys(sc);
2201                 if (error != 0)
2202                         goto done;
2203
2204                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) {
2205                         data = htole32(vap->iv_def_txkey);
2206                         DPRINTF(("Setting wep tx key index to %u\n",
2207                                 le32toh(data)));
2208                         error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data,
2209                             sizeof data);
2210                         if (error != 0)
2211                                 goto done;
2212                 }
2213         }
2214
2215         data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0);
2216         DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data)));
2217         error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data);
2218         if (error != 0)
2219                 goto done;
2220
2221         error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen);
2222         if (error != 0)
2223                 goto done;
2224
2225         error = ipw_setbssid(sc, ni->ni_bssid);
2226         if (error != 0)
2227                 goto done;
2228
2229         if (vap->iv_appie_wpa != NULL) {
2230                 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2231                 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len);
2232                 if (error != 0)
2233                         goto done;
2234         }
2235         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2236                 error = ipw_setchannel(sc, ni->ni_chan);
2237                 if (error != 0)
2238                         goto done;
2239         }
2240
2241         /* lock scan to ap's channel and enable associate */
2242         error = ipw_setscanopts(sc,
2243             1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0);
2244         if (error != 0)
2245                 goto done;
2246
2247         error = ipw_enable(sc);         /* finally, enable adapter */
2248         if (error == 0)
2249                 sc->flags |= IPW_FLAG_ASSOCIATING;
2250 done:
2251         IPW_UNLOCK(sc);
2252 }
2253
2254 static void
2255 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2256 {
2257         struct ieee80211_node *ni = vap->iv_bss;
2258         struct ipw_softc *sc = ic->ic_softc;
2259
2260         IPW_LOCK(sc);
2261         DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":"));
2262         /*
2263          * NB: don't try to do this if ipw_stop_master has
2264          *     shutdown the firmware and disabled interrupts.
2265          */
2266         if (sc->flags & IPW_FLAG_FW_INITED) {
2267                 sc->flags &= ~IPW_FLAG_ASSOCIATED;
2268                 /*
2269                  * NB: firmware currently ignores bssid parameter, but
2270                  *     supply it in case this changes (follow linux driver).
2271                  */
2272                 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE,
2273                         ni->ni_bssid, IEEE80211_ADDR_LEN);
2274         }
2275         IPW_UNLOCK(sc);
2276 }
2277
2278 /*
2279  * Handler for sc_init_task.  This is a simple wrapper around ipw_init().
2280  * It is called on firmware panics or on watchdog timeouts.
2281  */
2282 static void
2283 ipw_init_task(void *context, int pending)
2284 {
2285         ipw_init(context);
2286 }
2287
2288 static void
2289 ipw_init(void *priv)
2290 {
2291         struct ipw_softc *sc = priv;
2292         struct ieee80211com *ic = &sc->sc_ic;
2293
2294         IPW_LOCK(sc);
2295         ipw_init_locked(sc);
2296         IPW_UNLOCK(sc);
2297
2298         if (sc->flags & IPW_FLAG_RUNNING)
2299                 ieee80211_start_all(ic);                /* start all vap's */
2300 }
2301
2302 static void
2303 ipw_init_locked(struct ipw_softc *sc)
2304 {
2305         struct ieee80211com *ic = &sc->sc_ic;
2306         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2307         const struct firmware *fp;
2308         const struct ipw_firmware_hdr *hdr;
2309         const char *fw;
2310
2311         IPW_LOCK_ASSERT(sc);
2312
2313         DPRINTF(("%s: state %s flags 0x%x\n", __func__,
2314                 ieee80211_state_name[vap->iv_state], sc->flags));
2315
2316         /*
2317          * Avoid re-entrant calls.  We need to release the mutex in ipw_init()
2318          * when loading the firmware and we don't want to be called during this
2319          * operation.
2320          */
2321         if (sc->flags & IPW_FLAG_INIT_LOCKED)
2322                 return;
2323         sc->flags |= IPW_FLAG_INIT_LOCKED;
2324
2325         ipw_stop_locked(sc);
2326
2327         if (ipw_reset(sc) != 0) {
2328                 device_printf(sc->sc_dev, "could not reset adapter\n");
2329                 goto fail;
2330         }
2331
2332         if (sc->sc_firmware == NULL) {
2333                 device_printf(sc->sc_dev, "no firmware\n");
2334                 goto fail;
2335         }
2336         /* NB: consistency already checked on load */
2337         fp = sc->sc_firmware;
2338         hdr = (const struct ipw_firmware_hdr *)fp->data;
2339
2340         DPRINTF(("Loading firmware image '%s'\n", fp->name));
2341         fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz);
2342         if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) {
2343                 device_printf(sc->sc_dev, "could not load microcode\n");
2344                 goto fail;
2345         }
2346
2347         ipw_stop_master(sc);
2348
2349         /*
2350          * Setup tx, rx and status rings.
2351          */
2352         sc->txold = IPW_NTBD - 1;
2353         sc->txcur = 0;
2354         sc->txfree = IPW_NTBD - 2;
2355         sc->rxcur = IPW_NRBD - 1;
2356
2357         CSR_WRITE_4(sc, IPW_CSR_TX_BASE,  sc->tbd_phys);
2358         CSR_WRITE_4(sc, IPW_CSR_TX_SIZE,  IPW_NTBD);
2359         CSR_WRITE_4(sc, IPW_CSR_TX_READ,  0);
2360         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
2361
2362         CSR_WRITE_4(sc, IPW_CSR_RX_BASE,  sc->rbd_phys);
2363         CSR_WRITE_4(sc, IPW_CSR_RX_SIZE,  IPW_NRBD);
2364         CSR_WRITE_4(sc, IPW_CSR_RX_READ,  0);
2365         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
2366
2367         CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys);
2368
2369         fw = (const char *)fp->data + sizeof *hdr;
2370         if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) {
2371                 device_printf(sc->sc_dev, "could not load firmware\n");
2372                 goto fail;
2373         }
2374
2375         sc->flags |= IPW_FLAG_FW_INITED;
2376
2377         /* retrieve information tables base addresses */
2378         sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE);
2379         sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE);
2380
2381         ipw_write_table1(sc, IPW_INFO_LOCK, 0);
2382
2383         if (ipw_config(sc) != 0) {
2384                 device_printf(sc->sc_dev, "device configuration failed\n");
2385                 goto fail;
2386         }
2387
2388         callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
2389         sc->flags |= IPW_FLAG_RUNNING;
2390         sc->flags &= ~IPW_FLAG_INIT_LOCKED;
2391         return;
2392
2393 fail:
2394         ipw_stop_locked(sc);
2395         sc->flags &= ~IPW_FLAG_INIT_LOCKED;
2396 }
2397
2398 static int
2399 ipw_config(struct ipw_softc *sc)
2400 {
2401         struct ieee80211com *ic = &sc->sc_ic;
2402         struct ipw_configuration config;
2403         uint32_t data;
2404         int error;
2405
2406         error = ipw_disable(sc);
2407         if (error != 0)
2408                 return error;
2409
2410         switch (ic->ic_opmode) {
2411         case IEEE80211_M_STA:
2412         case IEEE80211_M_HOSTAP:
2413         case IEEE80211_M_WDS:           /* XXX */
2414                 data = htole32(IPW_MODE_BSS);
2415                 break;
2416         case IEEE80211_M_IBSS:
2417         case IEEE80211_M_AHDEMO:
2418                 data = htole32(IPW_MODE_IBSS);
2419                 break;
2420         case IEEE80211_M_MONITOR:
2421                 data = htole32(IPW_MODE_MONITOR);
2422                 break;
2423         default:
2424                 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
2425                 return EINVAL;
2426         }
2427         DPRINTF(("Setting mode to %u\n", le32toh(data)));
2428         error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data);
2429         if (error != 0)
2430                 return error;
2431
2432         if (ic->ic_opmode == IEEE80211_M_IBSS ||
2433             ic->ic_opmode == IEEE80211_M_MONITOR) {
2434                 error = ipw_setchannel(sc, ic->ic_curchan);
2435                 if (error != 0)
2436                         return error;
2437         }
2438
2439         if (ic->ic_opmode == IEEE80211_M_MONITOR)
2440                 return ipw_enable(sc);
2441
2442         config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK |
2443             IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE);
2444         if (ic->ic_opmode == IEEE80211_M_IBSS)
2445                 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START);
2446         if (ic->ic_promisc > 0)
2447                 config.flags |= htole32(IPW_CFG_PROMISCUOUS);
2448         config.bss_chan = htole32(0x3fff); /* channels 1-14 */
2449         config.ibss_chan = htole32(0x7ff); /* channels 1-11 */
2450         DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags)));
2451         error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config);
2452         if (error != 0)
2453                 return error;
2454
2455         data = htole32(0xf); /* 1, 2, 5.5, 11 */
2456         DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data)));
2457         error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data);
2458         if (error != 0)
2459                 return error;
2460
2461         /* Use the same rate set */
2462         DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data)));
2463         error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data);
2464         if (error != 0)
2465                 return error;
2466
2467         /* Use the same rate set */
2468         DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data)));
2469         error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data);
2470         if (error != 0)
2471                 return error;
2472
2473         data = htole32(IPW_POWER_MODE_CAM);
2474         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2475         error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data);
2476         if (error != 0)
2477                 return error;
2478
2479         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2480                 data = htole32(32); /* default value */
2481                 DPRINTF(("Setting tx power index to %u\n", le32toh(data)));
2482                 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data,
2483                     sizeof data);
2484                 if (error != 0)
2485                         return error;
2486         }
2487
2488         return 0;
2489 }
2490
2491 static void
2492 ipw_stop(void *priv)
2493 {
2494         struct ipw_softc *sc = priv;
2495
2496         IPW_LOCK(sc);
2497         ipw_stop_locked(sc);
2498         IPW_UNLOCK(sc);
2499 }
2500
2501 static void
2502 ipw_stop_locked(struct ipw_softc *sc)
2503 {
2504         int i;
2505
2506         IPW_LOCK_ASSERT(sc);
2507
2508         callout_stop(&sc->sc_wdtimer);
2509         ipw_stop_master(sc);
2510
2511         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET);
2512
2513         /*
2514          * Release tx buffers.
2515          */
2516         for (i = 0; i < IPW_NTBD; i++)
2517                 ipw_release_sbd(sc, &sc->stbd_list[i]);
2518
2519         sc->sc_tx_timer = 0;
2520         sc->flags &= ~IPW_FLAG_RUNNING;
2521 }
2522
2523 static int
2524 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)
2525 {
2526         struct ipw_softc *sc = arg1;
2527         uint32_t i, size, buf[256];
2528
2529         memset(buf, 0, sizeof buf);
2530
2531         if (!(sc->flags & IPW_FLAG_FW_INITED))
2532                 return SYSCTL_OUT(req, buf, sizeof buf);
2533
2534         CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base);
2535
2536         size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256);
2537         for (i = 1; i < size; i++)
2538                 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA));
2539
2540         return SYSCTL_OUT(req, buf, size);
2541 }
2542
2543 static int
2544 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)
2545 {
2546         struct ipw_softc *sc = arg1;
2547         int val;
2548
2549         val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) &&
2550                 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED));
2551
2552         return SYSCTL_OUT(req, &val, sizeof val);
2553 }
2554
2555 static uint32_t
2556 ipw_read_table1(struct ipw_softc *sc, uint32_t off)
2557 {
2558         return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off));
2559 }
2560
2561 static void
2562 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info)
2563 {
2564         MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info);
2565 }
2566
2567 #if 0
2568 static int
2569 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len)
2570 {
2571         uint32_t addr, info;
2572         uint16_t count, size;
2573         uint32_t total;
2574
2575         /* addr[4] + count[2] + size[2] */
2576         addr = MEM_READ_4(sc, sc->table2_base + off);
2577         info = MEM_READ_4(sc, sc->table2_base + off + 4);
2578
2579         count = info >> 16;
2580         size = info & 0xffff;
2581         total = count * size;
2582
2583         if (total > *len) {
2584                 *len = total;
2585                 return EINVAL;
2586         }
2587
2588         *len = total;
2589         ipw_read_mem_1(sc, addr, buf, total);
2590
2591         return 0;
2592 }
2593
2594 static void
2595 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2596     bus_size_t count)
2597 {
2598         for (; count > 0; offset++, datap++, count--) {
2599                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2600                 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3));
2601         }
2602 }
2603 #endif
2604
2605 static void
2606 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap,
2607     bus_size_t count)
2608 {
2609         for (; count > 0; offset++, datap++, count--) {
2610                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2611                 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap);
2612         }
2613 }
2614
2615 static void
2616 ipw_scan_start(struct ieee80211com *ic)
2617 {
2618         struct ipw_softc *sc = ic->ic_softc;
2619
2620         IPW_LOCK(sc);
2621         ipw_scan(sc);
2622         IPW_UNLOCK(sc);
2623 }
2624
2625 static void
2626 ipw_getradiocaps(struct ieee80211com *ic,
2627     int maxchans, int *nchans, struct ieee80211_channel chans[])
2628 {
2629         struct ipw_softc *sc = ic->ic_softc;
2630         uint8_t bands[IEEE80211_MODE_BYTES];
2631         int i;
2632
2633         memset(bands, 0, sizeof(bands));
2634         setbit(bands, IEEE80211_MODE_11B);
2635
2636         for (i = 1; i < 16; i++) {
2637                 if (sc->chanmask & (1 << i)) {
2638                         ieee80211_add_channel(chans, maxchans, nchans,
2639                             i, 0, 0, 0, bands);
2640                 }
2641         }
2642
2643 }
2644
2645 static void
2646 ipw_set_channel(struct ieee80211com *ic)
2647 {
2648         struct ipw_softc *sc = ic->ic_softc;
2649
2650         IPW_LOCK(sc);
2651         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2652                 ipw_disable(sc);
2653                 ipw_setchannel(sc, ic->ic_curchan);
2654                 ipw_enable(sc);
2655         }
2656         IPW_UNLOCK(sc);
2657 }
2658
2659 static void
2660 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
2661 {
2662         /* NB: all channels are scanned at once */
2663 }
2664
2665 static void
2666 ipw_scan_mindwell(struct ieee80211_scan_state *ss)
2667 {
2668         /* NB: don't try to abort scan; wait for firmware to finish */
2669 }
2670
2671 static void
2672 ipw_scan_end(struct ieee80211com *ic)
2673 {
2674         struct ipw_softc *sc = ic->ic_softc;
2675
2676         IPW_LOCK(sc);
2677         sc->flags &= ~IPW_FLAG_SCANNING;
2678         IPW_UNLOCK(sc);
2679 }