sys/dev/ipw/if_ipw.c

   1 /*      $FreeBSD$       */
   2
   3 /*-
   4  * Copyright (c) 2004-2006
   5  *      Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
   6  * Copyright (c) 2006 Sam Leffler, Errno Consulting
   7  * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice unmodified, this list of conditions, and the following
  14  *    disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __FBSDID("$FreeBSD$");
  34
  35 /*-
  36  * Intel(R) PRO/Wireless 2100 MiniPCI driver
  37  * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
  38  */
  39
  40 #include <sys/param.h>
  41 #include <sys/sysctl.h>
  42 #include <sys/sockio.h>
  43 #include <sys/mbuf.h>
  44 #include <sys/kernel.h>
  45 #include <sys/socket.h>
  46 #include <sys/systm.h>
  47 #include <sys/malloc.h>
  48 #include <sys/queue.h>
  49 #include <sys/taskqueue.h>
  50 #include <sys/module.h>
  51 #include <sys/bus.h>
  52 #include <sys/endian.h>
  53 #include <sys/linker.h>
  54 #include <sys/firmware.h>
  55
  56 #include <machine/bus.h>
  57 #include <machine/resource.h>
  58 #include <sys/rman.h>
  59
  60 #include <dev/pci/pcireg.h>
  61 #include <dev/pci/pcivar.h>
  62
  63 #include <net/bpf.h>
  64 #include <net/if.h>
  65 #include <net/if_arp.h>
  66 #include <net/ethernet.h>
  67 #include <net/if_dl.h>
  68 #include <net/if_media.h>
  69 #include <net/if_types.h>
  70
  71 #include <net80211/ieee80211_var.h>
  72 #include <net80211/ieee80211_radiotap.h>
  73
  74 #include <netinet/in.h>
  75 #include <netinet/in_systm.h>
  76 #include <netinet/in_var.h>
  77 #include <netinet/ip.h>
  78 #include <netinet/if_ether.h>
  79
  80 #include <dev/ipw/if_ipwreg.h>
  81 #include <dev/ipw/if_ipwvar.h>
  82
  83 #define IPW_DEBUG
  84 #ifdef IPW_DEBUG
  85 #define DPRINTF(x)      do { if (ipw_debug > 0) printf x; } while (0)
  86 #define DPRINTFN(n, x)  do { if (ipw_debug >= (n)) printf x; } while (0)
  87 int ipw_debug = 0;
  88 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level");
  89 #else
  90 #define DPRINTF(x)
  91 #define DPRINTFN(n, x)
  92 #endif
  93
  94 MODULE_DEPEND(ipw, pci,  1, 1, 1);
  95 MODULE_DEPEND(ipw, wlan, 1, 1, 1);
  96 MODULE_DEPEND(ipw, firmware, 1, 1, 1);
  97
  98 struct ipw_ident {
  99         uint16_t        vendor;
 100         uint16_t        device;
 101         const char      *name;
 102 };
 103
 104 static const struct ipw_ident ipw_ident_table[] = {
 105         { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" },
 106
 107         { 0, 0, NULL }
 108 };
 109
 110 static struct ieee80211vap *ipw_vap_create(struct ieee80211com *,
 111                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
 112                     const uint8_t [IEEE80211_ADDR_LEN],
 113                     const uint8_t [IEEE80211_ADDR_LEN]);
 114 static void     ipw_vap_delete(struct ieee80211vap *);
 115 static int      ipw_dma_alloc(struct ipw_softc *);
 116 static void     ipw_release(struct ipw_softc *);
 117 static void     ipw_media_status(struct ifnet *, struct ifmediareq *);
 118 static int      ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 119 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t);
 120 static void     ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *);
 121 static void     ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *);
 122 static void     ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *,
 123                     struct ipw_soft_bd *, struct ipw_soft_buf *);
 124 static void     ipw_rx_intr(struct ipw_softc *);
 125 static void     ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *);
 126 static void     ipw_tx_intr(struct ipw_softc *);
 127 static void     ipw_intr(void *);
 128 static void     ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int);
 129 static const char * ipw_cmdname(int);
 130 static int      ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t);
 131 static int      ipw_tx_start(struct ifnet *, struct mbuf *,
 132                     struct ieee80211_node *);
 133 static int      ipw_raw_xmit(struct ieee80211_node *, struct mbuf *,
 134                     const struct ieee80211_bpf_params *);
 135 static void     ipw_start(struct ifnet *);
 136 static void     ipw_start_locked(struct ifnet *);
 137 static void     ipw_watchdog(void *);
 138 static int      ipw_ioctl(struct ifnet *, u_long, caddr_t);
 139 static void     ipw_stop_master(struct ipw_softc *);
 140 static int      ipw_enable(struct ipw_softc *);
 141 static int      ipw_disable(struct ipw_softc *);
 142 static int      ipw_reset(struct ipw_softc *);
 143 static int      ipw_load_ucode(struct ipw_softc *, const char *, int);
 144 static int      ipw_load_firmware(struct ipw_softc *, const char *, int);
 145 static int      ipw_config(struct ipw_softc *);
 146 static void     ipw_assoc(struct ieee80211com *, struct ieee80211vap *);
 147 static void     ipw_disassoc(struct ieee80211com *, struct ieee80211vap *);
 148 static void     ipw_init_task(void *, int);
 149 static void     ipw_init(void *);
 150 static void     ipw_init_locked(struct ipw_softc *);
 151 static void     ipw_stop(void *);
 152 static void     ipw_stop_locked(struct ipw_softc *);
 153 static int      ipw_sysctl_stats(SYSCTL_HANDLER_ARGS);
 154 static int      ipw_sysctl_radio(SYSCTL_HANDLER_ARGS);
 155 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t);
 156 static void     ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t);
 157 #if 0
 158 static int      ipw_read_table2(struct ipw_softc *, uint32_t, void *,
 159                     uint32_t *);
 160 static void     ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *,
 161                     bus_size_t);
 162 #endif
 163 static void     ipw_write_mem_1(struct ipw_softc *, bus_size_t,
 164                     const uint8_t *, bus_size_t);
 165 static int      ipw_scan(struct ipw_softc *);
 166 static void     ipw_scan_start(struct ieee80211com *);
 167 static void     ipw_scan_end(struct ieee80211com *);
 168 static void     ipw_set_channel(struct ieee80211com *);
 169 static void     ipw_scan_curchan(struct ieee80211_scan_state *,
 170                     unsigned long maxdwell);
 171 static void     ipw_scan_mindwell(struct ieee80211_scan_state *);
 172
 173 static int ipw_probe(device_t);
 174 static int ipw_attach(device_t);
 175 static int ipw_detach(device_t);
 176 static int ipw_shutdown(device_t);
 177 static int ipw_suspend(device_t);
 178 static int ipw_resume(device_t);
 179
 180 static device_method_t ipw_methods[] = {
 181         /* Device interface */
 182         DEVMETHOD(device_probe,         ipw_probe),
 183         DEVMETHOD(device_attach,        ipw_attach),
 184         DEVMETHOD(device_detach,        ipw_detach),
 185         DEVMETHOD(device_shutdown,      ipw_shutdown),
 186         DEVMETHOD(device_suspend,       ipw_suspend),
 187         DEVMETHOD(device_resume,        ipw_resume),
 188
 189         { 0, 0 }
 190 };
 191
 192 static driver_t ipw_driver = {
 193         "ipw",
 194         ipw_methods,
 195         sizeof (struct ipw_softc)
 196 };
 197
 198 static devclass_t ipw_devclass;
 199
 200 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, 0, 0);
 201
 202 MODULE_VERSION(ipw, 1);
 203
 204 static int
 205 ipw_probe(device_t dev)
 206 {
 207         const struct ipw_ident *ident;
 208
 209         for (ident = ipw_ident_table; ident->name != NULL; ident++) {
 210                 if (pci_get_vendor(dev) == ident->vendor &&
 211                     pci_get_device(dev) == ident->device) {
 212                         device_set_desc(dev, ident->name);
 213                         return 0;
 214                 }
 215         }
 216         return ENXIO;
 217 }
 218
 219 /* Base Address Register */
 220 #define IPW_PCI_BAR0    0x10
 221
 222 static int
 223 ipw_attach(device_t dev)
 224 {
 225         struct ipw_softc *sc = device_get_softc(dev);
 226         struct ifnet *ifp;
 227         struct ieee80211com *ic;
 228         struct ieee80211_channel *c;
 229         uint16_t val;
 230         int error, i;
 231         uint8_t macaddr[IEEE80211_ADDR_LEN];
 232
 233         sc->sc_dev = dev;
 234
 235         mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
 236             MTX_DEF | MTX_RECURSE);
 237
 238         TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc);
 239         callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
 240
 241         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 242                 device_printf(dev, "chip is in D%d power mode "
 243                     "-- setting to D0\n", pci_get_powerstate(dev));
 244                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 245         }
 246
 247         pci_write_config(dev, 0x41, 0, 1);
 248
 249         /* enable bus-mastering */
 250         pci_enable_busmaster(dev);
 251
 252         sc->mem_rid = IPW_PCI_BAR0;
 253         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
 254             RF_ACTIVE);
 255         if (sc->mem == NULL) {
 256                 device_printf(dev, "could not allocate memory resource\n");
 257                 goto fail;
 258         }
 259
 260         sc->sc_st = rman_get_bustag(sc->mem);
 261         sc->sc_sh = rman_get_bushandle(sc->mem);
 262
 263         sc->irq_rid = 0;
 264         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
 265             RF_ACTIVE | RF_SHAREABLE);
 266         if (sc->irq == NULL) {
 267                 device_printf(dev, "could not allocate interrupt resource\n");
 268                 goto fail1;
 269         }
 270
 271         if (ipw_reset(sc) != 0) {
 272                 device_printf(dev, "could not reset adapter\n");
 273                 goto fail2;
 274         }
 275
 276         if (ipw_dma_alloc(sc) != 0) {
 277                 device_printf(dev, "could not allocate DMA resources\n");
 278                 goto fail2;
 279         }
 280
 281         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 282         if (ifp == NULL) {
 283                 device_printf(dev, "can not if_alloc()\n");
 284                 goto fail3;
 285         }
 286         ic = ifp->if_l2com;
 287
 288         ifp->if_softc = sc;
 289         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 290         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 291         ifp->if_init = ipw_init;
 292         ifp->if_ioctl = ipw_ioctl;
 293         ifp->if_start = ipw_start;
 294         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 295         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 296         IFQ_SET_READY(&ifp->if_snd);
 297
 298         ic->ic_ifp = ifp;
 299         ic->ic_opmode = IEEE80211_M_STA;
 300         ic->ic_phytype = IEEE80211_T_DS;
 301
 302         /* set device capabilities */
 303         ic->ic_caps =
 304                   IEEE80211_C_STA               /* station mode supported */
 305                 | IEEE80211_C_IBSS              /* IBSS mode supported */
 306                 | IEEE80211_C_MONITOR           /* monitor mode supported */
 307                 | IEEE80211_C_PMGT              /* power save supported */
 308                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 309                 | IEEE80211_C_WPA               /* 802.11i supported */
 310                 ;
 311
 312         /* read MAC address from EEPROM */
 313         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0);
 314         macaddr[0] = val >> 8;
 315         macaddr[1] = val & 0xff;
 316         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1);
 317         macaddr[2] = val >> 8;
 318         macaddr[3] = val & 0xff;
 319         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2);
 320         macaddr[4] = val >> 8;
 321         macaddr[5] = val & 0xff;
 322
 323         /* set supported .11b channels (read from EEPROM) */
 324         if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0)
 325                 val = 0x7ff; /* default to channels 1-11 */
 326         val <<= 1;
 327         for (i = 1; i < 16; i++) {
 328                 if (val & (1 << i)) {
 329                         c = &ic->ic_channels[ic->ic_nchans++];
 330                         c->ic_freq = ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 331                         c->ic_flags = IEEE80211_CHAN_B;
 332                         c->ic_ieee = i;
 333                 }
 334         }
 335
 336         /* check support for radio transmitter switch in EEPROM */
 337         if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8))
 338                 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH;
 339
 340         ieee80211_ifattach(ic, macaddr);
 341         ic->ic_scan_start = ipw_scan_start;
 342         ic->ic_scan_end = ipw_scan_end;
 343         ic->ic_set_channel = ipw_set_channel;
 344         ic->ic_scan_curchan = ipw_scan_curchan;
 345         ic->ic_scan_mindwell = ipw_scan_mindwell;
 346         ic->ic_raw_xmit = ipw_raw_xmit;
 347
 348         ic->ic_vap_create = ipw_vap_create;
 349         ic->ic_vap_delete = ipw_vap_delete;
 350
 351         ieee80211_radiotap_attach(ic,
 352             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 353                 IPW_TX_RADIOTAP_PRESENT,
 354             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 355                 IPW_RX_RADIOTAP_PRESENT);
 356
 357         /*
 358          * Add a few sysctl knobs.
 359          */
 360         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 361             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio",
 362             CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I",
 363             "radio transmitter switch state (0=off, 1=on)");
 364
 365         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 366             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
 367             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S",
 368             "statistics");
 369
 370         /*
 371          * Hook our interrupt after all initialization is complete.
 372          */
 373         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 374             NULL, ipw_intr, sc, &sc->sc_ih);
 375         if (error != 0) {
 376                 device_printf(dev, "could not set up interrupt\n");
 377                 goto fail4;
 378         }
 379
 380         if (bootverbose)
 381                 ieee80211_announce(ic);
 382
 383         return 0;
 384 fail4:
 385         if_free(ifp);
 386 fail3:
 387         ipw_release(sc);
 388 fail2:
 389         bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
 390 fail1:
 391         bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
 392 fail:
 393         mtx_destroy(&sc->sc_mtx);
 394         return ENXIO;
 395 }
 396
 397 static int
 398 ipw_detach(device_t dev)
 399 {
 400         struct ipw_softc *sc = device_get_softc(dev);
 401         struct ifnet *ifp = sc->sc_ifp;
 402         struct ieee80211com *ic = ifp->if_l2com;
 403
 404         ieee80211_draintask(ic, &sc->sc_init_task);
 405         ipw_stop(sc);
 406
 407         ieee80211_ifdetach(ic);
 408
 409         callout_drain(&sc->sc_wdtimer);
 410
 411         ipw_release(sc);
 412
 413         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 414         bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
 415
 416         bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
 417
 418         if_free(ifp);
 419
 420         if (sc->sc_firmware != NULL) {
 421                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 422                 sc->sc_firmware = NULL;
 423         }
 424
 425         mtx_destroy(&sc->sc_mtx);
 426
 427         return 0;
 428 }
 429
 430 static struct ieee80211vap *
 431 ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 432     enum ieee80211_opmode opmode, int flags,
 433     const uint8_t bssid[IEEE80211_ADDR_LEN],
 434     const uint8_t mac[IEEE80211_ADDR_LEN])
 435 {
 436         struct ifnet *ifp = ic->ic_ifp;
 437         struct ipw_softc *sc = ifp->if_softc;
 438         struct ipw_vap *ivp;
 439         struct ieee80211vap *vap;
 440         const struct firmware *fp;
 441         const struct ipw_firmware_hdr *hdr;
 442         const char *imagename;
 443
 444         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 445                 return NULL;
 446
 447         switch (opmode) {
 448         case IEEE80211_M_STA:
 449                 imagename = "ipw_bss";
 450                 break;
 451         case IEEE80211_M_IBSS:
 452                 imagename = "ipw_ibss";
 453                 break;
 454         case IEEE80211_M_MONITOR:
 455                 imagename = "ipw_monitor";
 456                 break;
 457         default:
 458                 return NULL;
 459         }
 460
 461         /*
 462          * Load firmware image using the firmware(9) subsystem.  Doing
 463          * this unlocked is ok since we're single-threaded by the
 464          * 802.11 layer.
 465          */
 466         if (sc->sc_firmware == NULL ||
 467             strcmp(sc->sc_firmware->name, imagename) != 0) {
 468                 if (sc->sc_firmware != NULL)
 469                         firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 470                 sc->sc_firmware = firmware_get(imagename);
 471         }
 472         if (sc->sc_firmware == NULL) {
 473                 device_printf(sc->sc_dev,
 474                     "could not load firmware image '%s'\n", imagename);
 475                 return NULL;
 476         }
 477         fp = sc->sc_firmware;
 478         if (fp->datasize < sizeof *hdr) {
 479                 device_printf(sc->sc_dev,
 480                     "firmware image too short %zu\n", fp->datasize);
 481                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 482                 sc->sc_firmware = NULL;
 483                 return NULL;
 484         }
 485         hdr = (const struct ipw_firmware_hdr *)fp->data;
 486         if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) +
 487             le32toh(hdr->ucodesz)) {
 488                 device_printf(sc->sc_dev,
 489                     "firmware image too short %zu\n", fp->datasize);
 490                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 491                 sc->sc_firmware = NULL;
 492                 return NULL;
 493         }
 494
 495         ivp = (struct ipw_vap *) malloc(sizeof(struct ipw_vap),
 496             M_80211_VAP, M_NOWAIT | M_ZERO);
 497         if (ivp == NULL)
 498                 return NULL;
 499         vap = &ivp->vap;
 500
 501         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
 502         /* override with driver methods */
 503         ivp->newstate = vap->iv_newstate;
 504         vap->iv_newstate = ipw_newstate;
 505
 506         /* complete setup */
 507         ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status);
 508         ic->ic_opmode = opmode;
 509         return vap;
 510 }
 511
 512 static void
 513 ipw_vap_delete(struct ieee80211vap *vap)
 514 {
 515         struct ipw_vap *ivp = IPW_VAP(vap);
 516
 517         ieee80211_vap_detach(vap);
 518         free(ivp, M_80211_VAP);
 519 }
 520
 521 static int
 522 ipw_dma_alloc(struct ipw_softc *sc)
 523 {
 524         struct ipw_soft_bd *sbd;
 525         struct ipw_soft_hdr *shdr;
 526         struct ipw_soft_buf *sbuf;
 527         bus_addr_t physaddr;
 528         int error, i;
 529
 530         /*
 531          * Allocate parent DMA tag for subsequent allocations.
 532          */
 533         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 534             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 535             BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED,
 536             BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat);
 537         if (error != 0) {
 538                 device_printf(sc->sc_dev, "could not create parent DMA tag\n");
 539                 goto fail;
 540         }
 541
 542         /*
 543          * Allocate and map tx ring.
 544          */
 545         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 546             BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL,
 547             NULL, &sc->tbd_dmat);
 548         if (error != 0) {
 549                 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
 550                 goto fail;
 551         }
 552
 553         error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list,
 554             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map);
 555         if (error != 0) {
 556                 device_printf(sc->sc_dev,
 557                     "could not allocate tx ring DMA memory\n");
 558                 goto fail;
 559         }
 560
 561         error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list,
 562             IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0);
 563         if (error != 0) {
 564                 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n");
 565                 goto fail;
 566         }
 567
 568         /*
 569          * Allocate and map rx ring.
 570          */
 571         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 572             BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL,
 573             NULL, &sc->rbd_dmat);
 574         if (error != 0) {
 575                 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n");
 576                 goto fail;
 577         }
 578
 579         error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list,
 580             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map);
 581         if (error != 0) {
 582                 device_printf(sc->sc_dev,
 583                     "could not allocate rx ring DMA memory\n");
 584                 goto fail;
 585         }
 586
 587         error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list,
 588             IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0);
 589         if (error != 0) {
 590                 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n");
 591                 goto fail;
 592         }
 593
 594         /*
 595          * Allocate and map status ring.
 596          */
 597         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 598             BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0,
 599             NULL, NULL, &sc->status_dmat);
 600         if (error != 0) {
 601                 device_printf(sc->sc_dev,
 602                     "could not create status ring DMA tag\n");
 603                 goto fail;
 604         }
 605
 606         error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list,
 607             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map);
 608         if (error != 0) {
 609                 device_printf(sc->sc_dev,
 610                     "could not allocate status ring DMA memory\n");
 611                 goto fail;
 612         }
 613
 614         error = bus_dmamap_load(sc->status_dmat, sc->status_map,
 615             sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys,
 616             0);
 617         if (error != 0) {
 618                 device_printf(sc->sc_dev,
 619                     "could not map status ring DMA memory\n");
 620                 goto fail;
 621         }
 622
 623         /*
 624          * Allocate command DMA map.
 625          */
 626         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 627             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1,
 628             sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat);
 629         if (error != 0) {
 630                 device_printf(sc->sc_dev, "could not create command DMA tag\n");
 631                 goto fail;
 632         }
 633
 634         error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map);
 635         if (error != 0) {
 636                 device_printf(sc->sc_dev,
 637                     "could not create command DMA map\n");
 638                 goto fail;
 639         }
 640
 641         /*
 642          * Allocate headers DMA maps.
 643          */
 644         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 645             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1,
 646             sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat);
 647         if (error != 0) {
 648                 device_printf(sc->sc_dev, "could not create header DMA tag\n");
 649                 goto fail;
 650         }
 651
 652         SLIST_INIT(&sc->free_shdr);
 653         for (i = 0; i < IPW_NDATA; i++) {
 654                 shdr = &sc->shdr_list[i];
 655                 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map);
 656                 if (error != 0) {
 657                         device_printf(sc->sc_dev,
 658                             "could not create header DMA map\n");
 659                         goto fail;
 660                 }
 661                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
 662         }
 663
 664         /*
 665          * Allocate tx buffers DMA maps.
 666          */
 667         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 668             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0,
 669             NULL, NULL, &sc->txbuf_dmat);
 670         if (error != 0) {
 671                 device_printf(sc->sc_dev, "could not create tx DMA tag\n");
 672                 goto fail;
 673         }
 674
 675         SLIST_INIT(&sc->free_sbuf);
 676         for (i = 0; i < IPW_NDATA; i++) {
 677                 sbuf = &sc->tx_sbuf_list[i];
 678                 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map);
 679                 if (error != 0) {
 680                         device_printf(sc->sc_dev,
 681                             "could not create tx DMA map\n");
 682                         goto fail;
 683                 }
 684                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
 685         }
 686
 687         /*
 688          * Initialize tx ring.
 689          */
 690         for (i = 0; i < IPW_NTBD; i++) {
 691                 sbd = &sc->stbd_list[i];
 692                 sbd->bd = &sc->tbd_list[i];
 693                 sbd->type = IPW_SBD_TYPE_NOASSOC;
 694         }
 695
 696         /*
 697          * Pre-allocate rx buffers and DMA maps.
 698          */
 699         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 700             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
 701             NULL, &sc->rxbuf_dmat);
 702         if (error != 0) {
 703                 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
 704                 goto fail;
 705         }
 706
 707         for (i = 0; i < IPW_NRBD; i++) {
 708                 sbd = &sc->srbd_list[i];
 709                 sbuf = &sc->rx_sbuf_list[i];
 710                 sbd->bd = &sc->rbd_list[i];
 711
 712                 sbuf->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 713                 if (sbuf->m == NULL) {
 714                         device_printf(sc->sc_dev,
 715                             "could not allocate rx mbuf\n");
 716                         error = ENOMEM;
 717                         goto fail;
 718                 }
 719
 720                 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map);
 721                 if (error != 0) {
 722                         device_printf(sc->sc_dev,
 723                             "could not create rx DMA map\n");
 724                         goto fail;
 725                 }
 726
 727                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
 728                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
 729                     &physaddr, 0);
 730                 if (error != 0) {
 731                         device_printf(sc->sc_dev,
 732                             "could not map rx DMA memory\n");
 733                         goto fail;
 734                 }
 735
 736                 sbd->type = IPW_SBD_TYPE_DATA;
 737                 sbd->priv = sbuf;
 738                 sbd->bd->physaddr = htole32(physaddr);
 739                 sbd->bd->len = htole32(MCLBYTES);
 740         }
 741
 742         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
 743
 744         return 0;
 745
 746 fail:   ipw_release(sc);
 747         return error;
 748 }
 749
 750 static void
 751 ipw_release(struct ipw_softc *sc)
 752 {
 753         struct ipw_soft_buf *sbuf;
 754         int i;
 755
 756         if (sc->parent_dmat != NULL) {
 757                 bus_dma_tag_destroy(sc->parent_dmat);
 758         }
 759
 760         if (sc->tbd_dmat != NULL) {
 761                 if (sc->stbd_list != NULL) {
 762                         bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map);
 763                         bus_dmamem_free(sc->tbd_dmat, sc->tbd_list,
 764                             sc->tbd_map);
 765                 }
 766                 bus_dma_tag_destroy(sc->tbd_dmat);
 767         }
 768
 769         if (sc->rbd_dmat != NULL) {
 770                 if (sc->rbd_list != NULL) {
 771                         bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map);
 772                         bus_dmamem_free(sc->rbd_dmat, sc->rbd_list,
 773                             sc->rbd_map);
 774                 }
 775                 bus_dma_tag_destroy(sc->rbd_dmat);
 776         }
 777
 778         if (sc->status_dmat != NULL) {
 779                 if (sc->status_list != NULL) {
 780                         bus_dmamap_unload(sc->status_dmat, sc->status_map);
 781                         bus_dmamem_free(sc->status_dmat, sc->status_list,
 782                             sc->status_map);
 783                 }
 784                 bus_dma_tag_destroy(sc->status_dmat);
 785         }
 786
 787         for (i = 0; i < IPW_NTBD; i++)
 788                 ipw_release_sbd(sc, &sc->stbd_list[i]);
 789
 790         if (sc->cmd_dmat != NULL) {
 791                 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map);
 792                 bus_dma_tag_destroy(sc->cmd_dmat);
 793         }
 794
 795         if (sc->hdr_dmat != NULL) {
 796                 for (i = 0; i < IPW_NDATA; i++)
 797                         bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map);
 798                 bus_dma_tag_destroy(sc->hdr_dmat);
 799         }
 800
 801         if (sc->txbuf_dmat != NULL) {
 802                 for (i = 0; i < IPW_NDATA; i++) {
 803                         bus_dmamap_destroy(sc->txbuf_dmat,
 804                             sc->tx_sbuf_list[i].map);
 805                 }
 806                 bus_dma_tag_destroy(sc->txbuf_dmat);
 807         }
 808
 809         if (sc->rxbuf_dmat != NULL) {
 810                 for (i = 0; i < IPW_NRBD; i++) {
 811                         sbuf = &sc->rx_sbuf_list[i];
 812                         if (sbuf->m != NULL) {
 813                                 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map,
 814                                     BUS_DMASYNC_POSTREAD);
 815                                 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
 816                                 m_freem(sbuf->m);
 817                         }
 818                         bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map);
 819                 }
 820                 bus_dma_tag_destroy(sc->rxbuf_dmat);
 821         }
 822 }
 823
 824 static int
 825 ipw_shutdown(device_t dev)
 826 {
 827         struct ipw_softc *sc = device_get_softc(dev);
 828
 829         ipw_stop(sc);
 830
 831         return 0;
 832 }
 833
 834 static int
 835 ipw_suspend(device_t dev)
 836 {
 837         struct ipw_softc *sc = device_get_softc(dev);
 838         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
 839
 840         ieee80211_suspend_all(ic);
 841         return 0;
 842 }
 843
 844 static int
 845 ipw_resume(device_t dev)
 846 {
 847         struct ipw_softc *sc = device_get_softc(dev);
 848         struct ieee80211com *ic = sc->sc_ifp->if_l2com;
 849
 850         pci_write_config(dev, 0x41, 0, 1);
 851
 852         ieee80211_resume_all(ic);
 853         return 0;
 854 }
 855
 856 static int
 857 ipw_cvtrate(int ipwrate)
 858 {
 859         switch (ipwrate) {
 860         case IPW_RATE_DS1:      return 2;
 861         case IPW_RATE_DS2:      return 4;
 862         case IPW_RATE_DS5:      return 11;
 863         case IPW_RATE_DS11:     return 22;
 864         }
 865         return 0;
 866 }
 867
 868 /*
 869  * The firmware automatically adapts the transmit speed. We report its current
 870  * value here.
 871  */
 872 static void
 873 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 874 {
 875         struct ieee80211vap *vap = ifp->if_softc;
 876         struct ieee80211com *ic = vap->iv_ic;
 877         struct ipw_softc *sc = ic->ic_ifp->if_softc;
 878
 879         /* read current transmission rate from adapter */
 880         vap->iv_bss->ni_txrate = ipw_cvtrate(
 881             ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf);
 882         ieee80211_media_status(ifp, imr);
 883 }
 884
 885 static int
 886 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 887 {
 888         struct ipw_vap *ivp = IPW_VAP(vap);
 889         struct ieee80211com *ic = vap->iv_ic;
 890         struct ifnet *ifp = ic->ic_ifp;
 891         struct ipw_softc *sc = ifp->if_softc;
 892         enum ieee80211_state ostate;
 893
 894         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
 895                 ieee80211_state_name[vap->iv_state],
 896                 ieee80211_state_name[nstate], sc->flags));
 897
 898         ostate = vap->iv_state;
 899         IEEE80211_UNLOCK(ic);
 900
 901         switch (nstate) {
 902         case IEEE80211_S_RUN:
 903                 if (ic->ic_opmode == IEEE80211_M_IBSS) {
 904                         /*
 905                          * XXX when joining an ibss network we are called
 906                          * with a SCAN -> RUN transition on scan complete.
 907                          * Use that to call ipw_assoc.  On completing the
 908                          * join we are then called again with an AUTH -> RUN
 909                          * transition and we want to do nothing.  This is
 910                          * all totally bogus and needs to be redone.
 911                          */
 912                         if (ostate == IEEE80211_S_SCAN)
 913                                 ipw_assoc(ic, vap);
 914                 }
 915                 break;
 916
 917         case IEEE80211_S_INIT:
 918                 if (sc->flags & IPW_FLAG_ASSOCIATED)
 919                         ipw_disassoc(ic, vap);
 920                 break;
 921
 922         case IEEE80211_S_AUTH:
 923                 /*
 924                  * Move to ASSOC state after the ipw_assoc() call.  Firmware
 925                  * takes care of authentication, after the call we'll receive
 926                  * only an assoc response which would otherwise be discared
 927                  * if we are still in AUTH state.
 928                  */
 929                 nstate = IEEE80211_S_ASSOC;
 930                 ipw_assoc(ic, vap);
 931                 break;
 932
 933         case IEEE80211_S_ASSOC:
 934                 /*
 935                  * If we are not transitioning from AUTH then resend the
 936                  * association request.
 937                  */
 938                 if (ostate != IEEE80211_S_AUTH)
 939                         ipw_assoc(ic, vap);
 940                 break;
 941
 942         default:
 943                 break;
 944         }
 945         IEEE80211_LOCK(ic);
 946         return ivp->newstate(vap, nstate, arg);
 947 }
 948
 949 /*
 950  * Read 16 bits at address 'addr' from the serial EEPROM.
 951  */
 952 static uint16_t
 953 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr)
 954 {
 955         uint32_t tmp;
 956         uint16_t val;
 957         int n;
 958
 959         /* clock C once before the first command */
 960         IPW_EEPROM_CTL(sc, 0);
 961         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 962         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 963         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 964
 965         /* write start bit (1) */
 966         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 967         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 968
 969         /* write READ opcode (10) */
 970         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 971         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 972         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 973         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 974
 975         /* write address A7-A0 */
 976         for (n = 7; n >= 0; n--) {
 977                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 978                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D));
 979                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 980                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C);
 981         }
 982
 983         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 984
 985         /* read data Q15-Q0 */
 986         val = 0;
 987         for (n = 15; n >= 0; n--) {
 988                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 989                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 990                 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL);
 991                 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n;
 992         }
 993
 994         IPW_EEPROM_CTL(sc, 0);
 995
 996         /* clear Chip Select and clock C */
 997         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 998         IPW_EEPROM_CTL(sc, 0);
 999         IPW_EEPROM_CTL(sc, IPW_EEPROM_C);
1000
1001         return le16toh(val);
1002 }
1003
1004 static void
1005 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
1006 {
1007         struct ipw_cmd *cmd;
1008
1009         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1010
1011         cmd = mtod(sbuf->m, struct ipw_cmd *);
1012
1013         DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n",
1014             ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type),
1015             le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len),
1016             le32toh(cmd->status)));
1017
1018         sc->flags &= ~IPW_FLAG_BUSY;
1019         wakeup(sc);
1020 }
1021
1022 static void
1023 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
1024 {
1025 #define IEEESTATE(vap)  ieee80211_state_name[vap->iv_state]
1026         struct ifnet *ifp = sc->sc_ifp;
1027         struct ieee80211com *ic = ifp->if_l2com;
1028         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1029         uint32_t state;
1030
1031         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1032
1033         state = le32toh(*mtod(sbuf->m, uint32_t *));
1034
1035         switch (state) {
1036         case IPW_STATE_ASSOCIATED:
1037                 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n",
1038                         IEEESTATE(vap), sc->flags));
1039                 /* XXX suppress state change in case the fw auto-associates */
1040                 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) {
1041                         DPRINTF(("Unexpected association (%s, flags 0x%x)\n",
1042                                 IEEESTATE(vap), sc->flags));
1043                         break;
1044                 }
1045                 sc->flags &= ~IPW_FLAG_ASSOCIATING;
1046                 sc->flags |= IPW_FLAG_ASSOCIATED;
1047                 break;
1048
1049         case IPW_STATE_SCANNING:
1050                 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n",
1051                         IEEESTATE(vap), sc->flags));
1052                 /*
1053                  * NB: Check driver state for association on assoc
1054                  * loss as the firmware will immediately start to
1055                  * scan and we would treat it as a beacon miss if
1056                  * we checked the 802.11 layer state.
1057                  */
1058                 if (sc->flags & IPW_FLAG_ASSOCIATED) {
1059                         IPW_UNLOCK(sc);
1060                         /* XXX probably need to issue disassoc to fw */
1061                         ieee80211_beacon_miss(ic);
1062                         IPW_LOCK(sc);
1063                 }
1064                 break;
1065
1066         case IPW_STATE_SCAN_COMPLETE:
1067                 /*
1068                  * XXX For some reason scan requests generate scan
1069                  * started + scan done events before any traffic is
1070                  * received (e.g. probe response frames).  We work
1071                  * around this by marking the HACK flag and skipping
1072                  * the first scan complete event.
1073                 */
1074                 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n",
1075                             IEEESTATE(vap), sc->flags));
1076                 if (sc->flags & IPW_FLAG_HACK) {
1077                         sc->flags &= ~IPW_FLAG_HACK;
1078                         break;
1079                 }
1080                 if (sc->flags & IPW_FLAG_SCANNING) {
1081                         IPW_UNLOCK(sc);
1082                         ieee80211_scan_done(vap);
1083                         IPW_LOCK(sc);
1084                         sc->flags &= ~IPW_FLAG_SCANNING;
1085                         sc->sc_scan_timer = 0;
1086                 }
1087                 break;
1088
1089         case IPW_STATE_ASSOCIATION_LOST:
1090                 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n",
1091                         IEEESTATE(vap), sc->flags));
1092                 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1093                 if (vap->iv_state == IEEE80211_S_RUN) {
1094                         IPW_UNLOCK(sc);
1095                         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1096                         IPW_LOCK(sc);
1097                 }
1098                 break;
1099
1100         case IPW_STATE_DISABLED:
1101                 /* XXX? is this right? */
1102                 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING |
1103                     IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1104                 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n",
1105                         IEEESTATE(vap), sc->flags));
1106                 break;
1107
1108         case IPW_STATE_RADIO_DISABLED:
1109                 device_printf(sc->sc_dev, "radio turned off\n");
1110                 ieee80211_notify_radio(ic, 0);
1111                 ipw_stop_locked(sc);
1112                 /* XXX start polling thread to detect radio on */
1113                 break;
1114
1115         default:
1116                 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n",
1117                         __func__, state, IEEESTATE(vap), sc->flags));
1118                 break;
1119         }
1120 #undef IEEESTATE
1121 }
1122
1123 /*
1124  * Set driver state for current channel.
1125  */
1126 static void
1127 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan)
1128 {
1129         struct ifnet *ifp = sc->sc_ifp;
1130         struct ieee80211com *ic = ifp->if_l2com;
1131
1132         ic->ic_curchan = chan;
1133         ieee80211_radiotap_chan_change(ic);
1134 }
1135
1136 /*
1137  * XXX: Hack to set the current channel to the value advertised in beacons or
1138  * probe responses. Only used during AP detection.
1139  */
1140 static void
1141 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m)
1142 {
1143         struct ifnet *ifp = sc->sc_ifp;
1144         struct ieee80211com *ic = ifp->if_l2com;
1145         struct ieee80211_channel *c;
1146         struct ieee80211_frame *wh;
1147         uint8_t subtype;
1148         uint8_t *frm, *efrm;
1149
1150         wh = mtod(m, struct ieee80211_frame *);
1151
1152         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
1153                 return;
1154
1155         subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1156
1157         if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1158             subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1159                 return;
1160
1161         /* XXX use ieee80211_parse_beacon */
1162         frm = (uint8_t *)(wh + 1);
1163         efrm = mtod(m, uint8_t *) + m->m_len;
1164
1165         frm += 12;      /* skip tstamp, bintval and capinfo fields */
1166         while (frm < efrm) {
1167                 if (*frm == IEEE80211_ELEMID_DSPARMS)
1168 #if IEEE80211_CHAN_MAX < 255
1169                 if (frm[2] <= IEEE80211_CHAN_MAX)
1170 #endif
1171                 {
1172                         DPRINTF(("Fixing channel to %d\n", frm[2]));
1173                         c = ieee80211_find_channel(ic,
1174                                 ieee80211_ieee2mhz(frm[2], 0),
1175                                 IEEE80211_CHAN_B);
1176                         if (c == NULL)
1177                                 c = &ic->ic_channels[0];
1178                         ipw_setcurchan(sc, c);
1179                 }
1180
1181                 frm += frm[1] + 2;
1182         }
1183 }
1184
1185 static void
1186 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status,
1187     struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf)
1188 {
1189         struct ifnet *ifp = sc->sc_ifp;
1190         struct ieee80211com *ic = ifp->if_l2com;
1191         struct mbuf *mnew, *m;
1192         struct ieee80211_node *ni;
1193         bus_addr_t physaddr;
1194         int error;
1195         int8_t rssi, nf;
1196
1197         DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len),
1198             status->rssi));
1199
1200         if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) ||
1201             le32toh(status->len) > MCLBYTES)
1202                 return;
1203
1204         /*
1205          * Try to allocate a new mbuf for this ring element and load it before
1206          * processing the current mbuf. If the ring element cannot be loaded,
1207          * drop the received packet and reuse the old mbuf. In the unlikely
1208          * case that the old mbuf can't be reloaded either, explicitly panic.
1209          */
1210         mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1211         if (mnew == NULL) {
1212                 ifp->if_ierrors++;
1213                 return;
1214         }
1215
1216         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1217         bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
1218
1219         error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *),
1220             MCLBYTES, ipw_dma_map_addr, &physaddr, 0);
1221         if (error != 0) {
1222                 m_freem(mnew);
1223
1224                 /* try to reload the old mbuf */
1225                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
1226                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
1227                     &physaddr, 0);
1228                 if (error != 0) {
1229                         /* very unlikely that it will fail... */
1230                         panic("%s: could not load old rx mbuf",
1231                             device_get_name(sc->sc_dev));
1232                 }
1233                 ifp->if_ierrors++;
1234                 return;
1235         }
1236
1237         /*
1238          * New mbuf successfully loaded, update Rx ring and continue
1239          * processing.
1240          */
1241         m = sbuf->m;
1242         sbuf->m = mnew;
1243         sbd->bd->physaddr = htole32(physaddr);
1244
1245         /* finalize mbuf */
1246         m->m_pkthdr.rcvif = ifp;
1247         m->m_pkthdr.len = m->m_len = le32toh(status->len);
1248
1249         rssi = status->rssi + IPW_RSSI_TO_DBM;
1250         nf = -95;
1251         if (ieee80211_radiotap_active(ic)) {
1252                 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap;
1253
1254                 tap->wr_flags = 0;
1255                 tap->wr_antsignal = rssi;
1256                 tap->wr_antnoise = nf;
1257         }
1258
1259         if (sc->flags & IPW_FLAG_SCANNING)
1260                 ipw_fix_channel(sc, m);
1261
1262         IPW_UNLOCK(sc);
1263         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1264         if (ni != NULL) {
1265                 (void) ieee80211_input(ni, m, rssi - nf, nf);
1266                 ieee80211_free_node(ni);
1267         } else
1268                 (void) ieee80211_input_all(ic, m, rssi - nf, nf);
1269         IPW_LOCK(sc);
1270
1271         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1272 }
1273
1274 static void
1275 ipw_rx_intr(struct ipw_softc *sc)
1276 {
1277         struct ipw_status *status;
1278         struct ipw_soft_bd *sbd;
1279         struct ipw_soft_buf *sbuf;
1280         uint32_t r, i;
1281
1282         if (!(sc->flags & IPW_FLAG_FW_INITED))
1283                 return;
1284
1285         r = CSR_READ_4(sc, IPW_CSR_RX_READ);
1286
1287         bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD);
1288
1289         for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) {
1290                 status = &sc->status_list[i];
1291                 sbd = &sc->srbd_list[i];
1292                 sbuf = sbd->priv;
1293
1294                 switch (le16toh(status->code) & 0xf) {
1295                 case IPW_STATUS_CODE_COMMAND:
1296                         ipw_rx_cmd_intr(sc, sbuf);
1297                         break;
1298
1299                 case IPW_STATUS_CODE_NEWSTATE:
1300                         ipw_rx_newstate_intr(sc, sbuf);
1301                         break;
1302
1303                 case IPW_STATUS_CODE_DATA_802_3:
1304                 case IPW_STATUS_CODE_DATA_802_11:
1305                         ipw_rx_data_intr(sc, status, sbd, sbuf);
1306                         break;
1307
1308                 case IPW_STATUS_CODE_NOTIFICATION:
1309                         DPRINTFN(2, ("notification status, len %u flags 0x%x\n",
1310                             le32toh(status->len), status->flags));
1311                         /* XXX maybe drive state machine AUTH->ASSOC? */
1312                         break;
1313
1314                 default:
1315                         device_printf(sc->sc_dev, "unexpected status code %u\n",
1316                             le16toh(status->code));
1317                 }
1318
1319                 /* firmware was killed, stop processing received frames */
1320                 if (!(sc->flags & IPW_FLAG_FW_INITED))
1321                         return;
1322
1323                 sbd->bd->flags = 0;
1324         }
1325
1326         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1327
1328         /* kick the firmware */
1329         sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1;
1330         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
1331 }
1332
1333 static void
1334 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd)
1335 {
1336         struct ipw_soft_hdr *shdr;
1337         struct ipw_soft_buf *sbuf;
1338
1339         switch (sbd->type) {
1340         case IPW_SBD_TYPE_COMMAND:
1341                 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map,
1342                     BUS_DMASYNC_POSTWRITE);
1343                 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map);
1344                 break;
1345
1346         case IPW_SBD_TYPE_HEADER:
1347                 shdr = sbd->priv;
1348                 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE);
1349                 bus_dmamap_unload(sc->hdr_dmat, shdr->map);
1350                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
1351                 break;
1352
1353         case IPW_SBD_TYPE_DATA:
1354                 sbuf = sbd->priv;
1355                 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map,
1356                     BUS_DMASYNC_POSTWRITE);
1357                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1358                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
1359
1360                 if (sbuf->m->m_flags & M_TXCB)
1361                         ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/);
1362                 m_freem(sbuf->m);
1363                 ieee80211_free_node(sbuf->ni);
1364
1365                 sc->sc_tx_timer = 0;
1366                 break;
1367         }
1368
1369         sbd->type = IPW_SBD_TYPE_NOASSOC;
1370 }
1371
1372 static void
1373 ipw_tx_intr(struct ipw_softc *sc)
1374 {
1375         struct ifnet *ifp = sc->sc_ifp;
1376         struct ipw_soft_bd *sbd;
1377         uint32_t r, i;
1378
1379         if (!(sc->flags & IPW_FLAG_FW_INITED))
1380                 return;
1381
1382         r = CSR_READ_4(sc, IPW_CSR_TX_READ);
1383
1384         for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) {
1385                 sbd = &sc->stbd_list[i];
1386
1387                 if (sbd->type == IPW_SBD_TYPE_DATA)
1388                         ifp->if_opackets++;
1389
1390                 ipw_release_sbd(sc, sbd);
1391                 sc->txfree++;
1392         }
1393
1394         /* remember what the firmware has processed */
1395         sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1;
1396
1397         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1398         ipw_start_locked(ifp);
1399 }
1400
1401 static void
1402 ipw_fatal_error_intr(struct ipw_softc *sc)
1403 {
1404         struct ifnet *ifp = sc->sc_ifp;
1405         struct ieee80211com *ic = ifp->if_l2com;
1406         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1407
1408         device_printf(sc->sc_dev, "firmware error\n");
1409         if (vap != NULL) {
1410                 IPW_UNLOCK(sc);
1411                 ieee80211_cancel_scan(vap);
1412                 IPW_LOCK(sc);
1413         }
1414         ieee80211_runtask(ic, &sc->sc_init_task);
1415 }
1416
1417 static void
1418 ipw_intr(void *arg)
1419 {
1420         struct ipw_softc *sc = arg;
1421         uint32_t r;
1422
1423         IPW_LOCK(sc);
1424
1425         r = CSR_READ_4(sc, IPW_CSR_INTR);
1426         if (r == 0 || r == 0xffffffff)
1427                 goto done;
1428
1429         /* disable interrupts */
1430         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1431
1432         /* acknowledge all interrupts */
1433         CSR_WRITE_4(sc, IPW_CSR_INTR, r);
1434
1435         if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) {
1436                 ipw_fatal_error_intr(sc);
1437                 goto done;
1438         }
1439
1440         if (r & IPW_INTR_FW_INIT_DONE)
1441                 wakeup(sc);
1442
1443         if (r & IPW_INTR_RX_TRANSFER)
1444                 ipw_rx_intr(sc);
1445
1446         if (r & IPW_INTR_TX_TRANSFER)
1447                 ipw_tx_intr(sc);
1448
1449         /* re-enable interrupts */
1450         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1451 done:
1452         IPW_UNLOCK(sc);
1453 }
1454
1455 static void
1456 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1457 {
1458         if (error != 0)
1459                 return;
1460
1461         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1462
1463         *(bus_addr_t *)arg = segs[0].ds_addr;
1464 }
1465
1466 static const char *
1467 ipw_cmdname(int cmd)
1468 {
1469 #define N(a)    (sizeof(a) / sizeof(a[0]))
1470         static const struct {
1471                 int     cmd;
1472                 const char *name;
1473         } cmds[] = {
1474                 { IPW_CMD_ADD_MULTICAST,        "ADD_MULTICAST" },
1475                 { IPW_CMD_BROADCAST_SCAN,       "BROADCAST_SCAN" },
1476                 { IPW_CMD_DISABLE,              "DISABLE" },
1477                 { IPW_CMD_DISABLE_PHY,          "DISABLE_PHY" },
1478                 { IPW_CMD_ENABLE,               "ENABLE" },
1479                 { IPW_CMD_PREPARE_POWER_DOWN,   "PREPARE_POWER_DOWN" },
1480                 { IPW_CMD_SET_BASIC_TX_RATES,   "SET_BASIC_TX_RATES" },
1481                 { IPW_CMD_SET_BEACON_INTERVAL,  "SET_BEACON_INTERVAL" },
1482                 { IPW_CMD_SET_CHANNEL,          "SET_CHANNEL" },
1483                 { IPW_CMD_SET_CONFIGURATION,    "SET_CONFIGURATION" },
1484                 { IPW_CMD_SET_DESIRED_BSSID,    "SET_DESIRED_BSSID" },
1485                 { IPW_CMD_SET_ESSID,            "SET_ESSID" },
1486                 { IPW_CMD_SET_FRAG_THRESHOLD,   "SET_FRAG_THRESHOLD" },
1487                 { IPW_CMD_SET_MAC_ADDRESS,      "SET_MAC_ADDRESS" },
1488                 { IPW_CMD_SET_MANDATORY_BSSID,  "SET_MANDATORY_BSSID" },
1489                 { IPW_CMD_SET_MODE,             "SET_MODE" },
1490                 { IPW_CMD_SET_MSDU_TX_RATES,    "SET_MSDU_TX_RATES" },
1491                 { IPW_CMD_SET_POWER_MODE,       "SET_POWER_MODE" },
1492                 { IPW_CMD_SET_RTS_THRESHOLD,    "SET_RTS_THRESHOLD" },
1493                 { IPW_CMD_SET_SCAN_OPTIONS,     "SET_SCAN_OPTIONS" },
1494                 { IPW_CMD_SET_SECURITY_INFO,    "SET_SECURITY_INFO" },
1495                 { IPW_CMD_SET_TX_POWER_INDEX,   "SET_TX_POWER_INDEX" },
1496                 { IPW_CMD_SET_TX_RATES,         "SET_TX_RATES" },
1497                 { IPW_CMD_SET_WEP_FLAGS,        "SET_WEP_FLAGS" },
1498                 { IPW_CMD_SET_WEP_KEY,          "SET_WEP_KEY" },
1499                 { IPW_CMD_SET_WEP_KEY_INDEX,    "SET_WEP_KEY_INDEX" },
1500                 { IPW_CMD_SET_WPA_IE,           "SET_WPA_IE" },
1501
1502         };
1503         static char buf[12];
1504         int i;
1505
1506         for (i = 0; i < N(cmds); i++)
1507                 if (cmds[i].cmd == cmd)
1508                         return cmds[i].name;
1509         snprintf(buf, sizeof(buf), "%u", cmd);
1510         return buf;
1511 #undef N
1512 }
1513
1514 /*
1515  * Send a command to the firmware and wait for the acknowledgement.
1516  */
1517 static int
1518 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len)
1519 {
1520         struct ipw_soft_bd *sbd;
1521         bus_addr_t physaddr;
1522         int error;
1523
1524         IPW_LOCK_ASSERT(sc);
1525
1526         if (sc->flags & IPW_FLAG_BUSY) {
1527                 device_printf(sc->sc_dev, "%s: %s not sent, busy\n",
1528                         __func__, ipw_cmdname(type));
1529                 return EAGAIN;
1530         }
1531         sc->flags |= IPW_FLAG_BUSY;
1532
1533         sbd = &sc->stbd_list[sc->txcur];
1534
1535         error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd,
1536             sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0);
1537         if (error != 0) {
1538                 device_printf(sc->sc_dev, "could not map command DMA memory\n");
1539                 sc->flags &= ~IPW_FLAG_BUSY;
1540                 return error;
1541         }
1542
1543         sc->cmd.type = htole32(type);
1544         sc->cmd.subtype = 0;
1545         sc->cmd.len = htole32(len);
1546         sc->cmd.seq = 0;
1547         memcpy(sc->cmd.data, data, len);
1548
1549         sbd->type = IPW_SBD_TYPE_COMMAND;
1550         sbd->bd->physaddr = htole32(physaddr);
1551         sbd->bd->len = htole32(sizeof (struct ipw_cmd));
1552         sbd->bd->nfrag = 1;
1553         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND |
1554             IPW_BD_FLAG_TX_LAST_FRAGMENT;
1555
1556         bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE);
1557         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1558
1559 #ifdef IPW_DEBUG
1560         if (ipw_debug >= 4) {
1561                 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type,
1562                     0, 0, len);
1563                 /* Print the data buffer in the higher debug level */
1564                 if (ipw_debug >= 9 && len > 0) {
1565                         printf(" data: 0x");
1566                         for (int i = 1; i <= len; i++)
1567                                 printf("%1D", (u_char *)data + len - i, "");
1568                 }
1569                 printf("\n");
1570         }
1571 #endif
1572
1573         /* kick firmware */
1574         sc->txfree--;
1575         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1576         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1577
1578         /* wait at most one second for command to complete */
1579         error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz);
1580         if (error != 0) {
1581                 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n",
1582                     __func__, ipw_cmdname(type), error);
1583                 sc->flags &= ~IPW_FLAG_BUSY;
1584                 return (error);
1585         }
1586         return (0);
1587 }
1588
1589 static int
1590 ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni)
1591 {
1592         struct ipw_softc *sc = ifp->if_softc;
1593         struct ieee80211com *ic = ifp->if_l2com;
1594         struct ieee80211vap *vap = ni->ni_vap;
1595         struct ieee80211_frame *wh;
1596         struct ipw_soft_bd *sbd;
1597         struct ipw_soft_hdr *shdr;
1598         struct ipw_soft_buf *sbuf;
1599         struct ieee80211_key *k;
1600         struct mbuf *mnew;
1601         bus_dma_segment_t segs[IPW_MAX_NSEG];
1602         bus_addr_t physaddr;
1603         int nsegs, error, i;
1604
1605         wh = mtod(m0, struct ieee80211_frame *);
1606
1607         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1608                 k = ieee80211_crypto_encap(ni, m0);
1609                 if (k == NULL) {
1610                         m_freem(m0);
1611                         return ENOBUFS;
1612                 }
1613                 /* packet header may have moved, reset our local pointer */
1614                 wh = mtod(m0, struct ieee80211_frame *);
1615         }
1616
1617         if (ieee80211_radiotap_active_vap(vap)) {
1618                 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap;
1619
1620                 tap->wt_flags = 0;
1621
1622                 ieee80211_radiotap_tx(vap, m0);
1623         }
1624
1625         shdr = SLIST_FIRST(&sc->free_shdr);
1626         sbuf = SLIST_FIRST(&sc->free_sbuf);
1627         KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool"));
1628
1629         shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND);
1630         shdr->hdr.subtype = 0;
1631         shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_WEP) ? 1 : 0;
1632         shdr->hdr.encrypt = 0;
1633         shdr->hdr.keyidx = 0;
1634         shdr->hdr.keysz = 0;
1635         shdr->hdr.fragmentsz = 0;
1636         IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2);
1637         if (ic->ic_opmode == IEEE80211_M_STA)
1638                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3);
1639         else
1640                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1);
1641
1642         /* trim IEEE802.11 header */
1643         m_adj(m0, sizeof (struct ieee80211_frame));
1644
1645         error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs,
1646             &nsegs, 0);
1647         if (error != 0 && error != EFBIG) {
1648                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1649                     error);
1650                 m_freem(m0);
1651                 return error;
1652         }
1653         if (error != 0) {
1654                 mnew = m_defrag(m0, M_NOWAIT);
1655                 if (mnew == NULL) {
1656                         device_printf(sc->sc_dev,
1657                             "could not defragment mbuf\n");
1658                         m_freem(m0);
1659                         return ENOBUFS;
1660                 }
1661                 m0 = mnew;
1662
1663                 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0,
1664                     segs, &nsegs, 0);
1665                 if (error != 0) {
1666                         device_printf(sc->sc_dev,
1667                             "could not map mbuf (error %d)\n", error);
1668                         m_freem(m0);
1669                         return error;
1670                 }
1671         }
1672
1673         error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr,
1674             sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0);
1675         if (error != 0) {
1676                 device_printf(sc->sc_dev, "could not map header DMA memory\n");
1677                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1678                 m_freem(m0);
1679                 return error;
1680         }
1681
1682         SLIST_REMOVE_HEAD(&sc->free_sbuf, next);
1683         SLIST_REMOVE_HEAD(&sc->free_shdr, next);
1684
1685         sbd = &sc->stbd_list[sc->txcur];
1686         sbd->type = IPW_SBD_TYPE_HEADER;
1687         sbd->priv = shdr;
1688         sbd->bd->physaddr = htole32(physaddr);
1689         sbd->bd->len = htole32(sizeof (struct ipw_hdr));
1690         sbd->bd->nfrag = 1 + nsegs;
1691         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 |
1692             IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1693
1694         DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n",
1695             shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted,
1696             shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr,
1697             ":"));
1698
1699         sc->txfree--;
1700         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1701
1702         sbuf->m = m0;
1703         sbuf->ni = ni;
1704
1705         for (i = 0; i < nsegs; i++) {
1706                 sbd = &sc->stbd_list[sc->txcur];
1707
1708                 sbd->bd->physaddr = htole32(segs[i].ds_addr);
1709                 sbd->bd->len = htole32(segs[i].ds_len);
1710                 sbd->bd->nfrag = 0;
1711                 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3;
1712                 if (i == nsegs - 1) {
1713                         sbd->type = IPW_SBD_TYPE_DATA;
1714                         sbd->priv = sbuf;
1715                         sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT;
1716                 } else {
1717                         sbd->type = IPW_SBD_TYPE_NOASSOC;
1718                         sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1719                 }
1720
1721                 DPRINTFN(5, ("sending fragment (%d)\n", i));
1722
1723                 sc->txfree--;
1724                 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1725         }
1726
1727         bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE);
1728         bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE);
1729         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1730
1731         /* kick firmware */
1732         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1733
1734         return 0;
1735 }
1736
1737 static int
1738 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1739         const struct ieee80211_bpf_params *params)
1740 {
1741         /* no support; just discard */
1742         m_freem(m);
1743         ieee80211_free_node(ni);
1744         return 0;
1745 }
1746
1747 static void
1748 ipw_start(struct ifnet *ifp)
1749 {
1750         struct ipw_softc *sc = ifp->if_softc;
1751
1752         IPW_LOCK(sc);
1753         ipw_start_locked(ifp);
1754         IPW_UNLOCK(sc);
1755 }
1756
1757 static void
1758 ipw_start_locked(struct ifnet *ifp)
1759 {
1760         struct ipw_softc *sc = ifp->if_softc;
1761         struct ieee80211_node *ni;
1762         struct mbuf *m;
1763
1764         IPW_LOCK_ASSERT(sc);
1765
1766         for (;;) {
1767                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1768                 if (m == NULL)
1769                         break;
1770                 if (sc->txfree < 1 + IPW_MAX_NSEG) {
1771                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
1772                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1773                         break;
1774                 }
1775                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1776                 if (ipw_tx_start(ifp, m, ni) != 0) {
1777                         ieee80211_free_node(ni);
1778                         ifp->if_oerrors++;
1779                         break;
1780                 }
1781                 /* start watchdog timer */
1782                 sc->sc_tx_timer = 5;
1783         }
1784 }
1785
1786 static void
1787 ipw_watchdog(void *arg)
1788 {
1789         struct ipw_softc *sc = arg;
1790         struct ifnet *ifp = sc->sc_ifp;
1791         struct ieee80211com *ic = ifp->if_l2com;
1792
1793         IPW_LOCK_ASSERT(sc);
1794
1795         if (sc->sc_tx_timer > 0) {
1796                 if (--sc->sc_tx_timer == 0) {
1797                         if_printf(ifp, "device timeout\n");
1798                         ifp->if_oerrors++;
1799                         taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1800                 }
1801         }
1802         if (sc->sc_scan_timer > 0) {
1803                 if (--sc->sc_scan_timer == 0) {
1804                         DPRINTFN(3, ("Scan timeout\n"));
1805                         /* End the scan */
1806                         if (sc->flags & IPW_FLAG_SCANNING) {
1807                                 IPW_UNLOCK(sc);
1808                                 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps));
1809                                 IPW_LOCK(sc);
1810                                 sc->flags &= ~IPW_FLAG_SCANNING;
1811                         }
1812                 }
1813         }
1814         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1815                 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
1816 }
1817
1818 static int
1819 ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1820 {
1821         struct ipw_softc *sc = ifp->if_softc;
1822         struct ieee80211com *ic = ifp->if_l2com;
1823         struct ifreq *ifr = (struct ifreq *) data;
1824         int error = 0, startall = 0;
1825
1826         switch (cmd) {
1827         case SIOCSIFFLAGS:
1828                 IPW_LOCK(sc);
1829                 if (ifp->if_flags & IFF_UP) {
1830                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1831                                 ipw_init_locked(sc);
1832                                 startall = 1;
1833                         }
1834                 } else {
1835                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1836                                 ipw_stop_locked(sc);
1837                 }
1838                 IPW_UNLOCK(sc);
1839                 if (startall)
1840                         ieee80211_start_all(ic);
1841                 break;
1842         case SIOCGIFMEDIA:
1843                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1844                 break;
1845         case SIOCGIFADDR:
1846                 error = ether_ioctl(ifp, cmd, data);
1847                 break;
1848         default:
1849                 error = EINVAL;
1850                 break;
1851         }
1852         return error;
1853 }
1854
1855 static void
1856 ipw_stop_master(struct ipw_softc *sc)
1857 {
1858         uint32_t tmp;
1859         int ntries;
1860
1861         /* disable interrupts */
1862         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1863
1864         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER);
1865         for (ntries = 0; ntries < 50; ntries++) {
1866                 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED)
1867                         break;
1868                 DELAY(10);
1869         }
1870         if (ntries == 50)
1871                 device_printf(sc->sc_dev, "timeout waiting for master\n");
1872
1873         tmp = CSR_READ_4(sc, IPW_CSR_RST);
1874         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET);
1875
1876         /* Clear all flags except the following */
1877         sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH;
1878 }
1879
1880 static int
1881 ipw_reset(struct ipw_softc *sc)
1882 {
1883         uint32_t tmp;
1884         int ntries;
1885
1886         ipw_stop_master(sc);
1887
1888         /* move adapter to D0 state */
1889         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1890         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1891
1892         /* wait for clock stabilization */
1893         for (ntries = 0; ntries < 1000; ntries++) {
1894                 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY)
1895                         break;
1896                 DELAY(200);
1897         }
1898         if (ntries == 1000)
1899                 return EIO;
1900
1901         tmp =  CSR_READ_4(sc, IPW_CSR_RST);
1902         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET);
1903
1904         DELAY(10);
1905
1906         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1907         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1908
1909         return 0;
1910 }
1911
1912 static int
1913 ipw_waitfordisable(struct ipw_softc *sc, int waitfor)
1914 {
1915         int ms = hz < 1000 ? 1 : hz/10;
1916         int i, error;
1917
1918         for (i = 0; i < 100; i++) {
1919                 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor)
1920                         return 0;
1921                 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms);
1922                 if (error == 0 || error != EWOULDBLOCK)
1923                         return 0;
1924         }
1925         DPRINTF(("%s: timeout waiting for %s\n",
1926                 __func__, waitfor ? "disable" : "enable"));
1927         return ETIMEDOUT;
1928 }
1929
1930 static int
1931 ipw_enable(struct ipw_softc *sc)
1932 {
1933         int error;
1934
1935         if ((sc->flags & IPW_FLAG_ENABLED) == 0) {
1936                 DPRINTF(("Enable adapter\n"));
1937                 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
1938                 if (error != 0)
1939                         return error;
1940                 error = ipw_waitfordisable(sc, 0);
1941                 if (error != 0)
1942                         return error;
1943                 sc->flags |= IPW_FLAG_ENABLED;
1944         }
1945         return 0;
1946 }
1947
1948 static int
1949 ipw_disable(struct ipw_softc *sc)
1950 {
1951         int error;
1952
1953         if (sc->flags & IPW_FLAG_ENABLED) {
1954                 DPRINTF(("Disable adapter\n"));
1955                 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0);
1956                 if (error != 0)
1957                         return error;
1958                 error = ipw_waitfordisable(sc, 1);
1959                 if (error != 0)
1960                         return error;
1961                 sc->flags &= ~IPW_FLAG_ENABLED;
1962         }
1963         return 0;
1964 }
1965
1966 /*
1967  * Upload the microcode to the device.
1968  */
1969 static int
1970 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size)
1971 {
1972         int ntries;
1973
1974         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
1975         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1976
1977         MEM_WRITE_2(sc, 0x220000, 0x0703);
1978         MEM_WRITE_2(sc, 0x220000, 0x0707);
1979
1980         MEM_WRITE_1(sc, 0x210014, 0x72);
1981         MEM_WRITE_1(sc, 0x210014, 0x72);
1982
1983         MEM_WRITE_1(sc, 0x210000, 0x40);
1984         MEM_WRITE_1(sc, 0x210000, 0x00);
1985         MEM_WRITE_1(sc, 0x210000, 0x40);
1986
1987         MEM_WRITE_MULTI_1(sc, 0x210010, uc, size);
1988
1989         MEM_WRITE_1(sc, 0x210000, 0x00);
1990         MEM_WRITE_1(sc, 0x210000, 0x00);
1991         MEM_WRITE_1(sc, 0x210000, 0x80);
1992
1993         MEM_WRITE_2(sc, 0x220000, 0x0703);
1994         MEM_WRITE_2(sc, 0x220000, 0x0707);
1995
1996         MEM_WRITE_1(sc, 0x210014, 0x72);
1997         MEM_WRITE_1(sc, 0x210014, 0x72);
1998
1999         MEM_WRITE_1(sc, 0x210000, 0x00);
2000         MEM_WRITE_1(sc, 0x210000, 0x80);
2001
2002         for (ntries = 0; ntries < 10; ntries++) {
2003                 if (MEM_READ_1(sc, 0x210000) & 1)
2004                         break;
2005                 DELAY(10);
2006         }
2007         if (ntries == 10) {
2008                 device_printf(sc->sc_dev,
2009                     "timeout waiting for ucode to initialize\n");
2010                 return EIO;
2011         }
2012
2013         MEM_WRITE_4(sc, 0x3000e0, 0);
2014
2015         return 0;
2016 }
2017
2018 /* set of macros to handle unaligned little endian data in firmware image */
2019 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2020 #define GETLE16(p) ((p)[0] | (p)[1] << 8)
2021 static int
2022 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size)
2023 {
2024         const uint8_t *p, *end;
2025         uint32_t tmp, dst;
2026         uint16_t len;
2027         int error;
2028
2029         p = fw;
2030         end = fw + size;
2031         while (p < end) {
2032                 dst = GETLE32(p); p += 4;
2033                 len = GETLE16(p); p += 2;
2034
2035                 ipw_write_mem_1(sc, dst, p, len);
2036                 p += len;
2037         }
2038
2039         CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK |
2040             IPW_IO_LED_OFF);
2041
2042         /* enable interrupts */
2043         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
2044
2045         /* kick the firmware */
2046         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
2047
2048         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
2049         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY);
2050
2051         /* wait at most one second for firmware initialization to complete */
2052         if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) {
2053                 device_printf(sc->sc_dev, "timeout waiting for firmware "
2054                     "initialization to complete\n");
2055                 return error;
2056         }
2057
2058         tmp = CSR_READ_4(sc, IPW_CSR_IO);
2059         CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK |
2060             IPW_IO_GPIO3_MASK);
2061
2062         return 0;
2063 }
2064
2065 static int
2066 ipw_setwepkeys(struct ipw_softc *sc)
2067 {
2068         struct ifnet *ifp = sc->sc_ifp;
2069         struct ieee80211com *ic = ifp->if_l2com;
2070         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2071         struct ipw_wep_key wepkey;
2072         struct ieee80211_key *wk;
2073         int error, i;
2074
2075         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2076                 wk = &vap->iv_nw_keys[i];
2077
2078                 if (wk->wk_cipher == NULL ||
2079                     wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP)
2080                         continue;
2081
2082                 wepkey.idx = i;
2083                 wepkey.len = wk->wk_keylen;
2084                 memset(wepkey.key, 0, sizeof wepkey.key);
2085                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2086                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2087                     wepkey.len));
2088                 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey,
2089                     sizeof wepkey);
2090                 if (error != 0)
2091                         return error;
2092         }
2093         return 0;
2094 }
2095
2096 static int
2097 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen)
2098 {
2099         struct ipw_wpa_ie wpaie;
2100
2101         memset(&wpaie, 0, sizeof(wpaie));
2102         wpaie.len = htole32(ielen);
2103         /* XXX verify length */
2104         memcpy(&wpaie.ie, ie, ielen);
2105         DPRINTF(("Setting WPA IE\n"));
2106         return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie));
2107 }
2108
2109 static int
2110 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid)
2111 {
2112         static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
2113
2114         if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) {
2115                 DPRINTF(("Setting mandatory BSSID to null\n"));
2116                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0);
2117         } else {
2118                 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":"));
2119                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID,
2120                         bssid, IEEE80211_ADDR_LEN);
2121         }
2122 }
2123
2124 static int
2125 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen)
2126 {
2127         if (ssidlen == 0) {
2128                 /*
2129                  * A bug in the firmware breaks the ``don't associate''
2130                  * bit in the scan options command.  To compensate for
2131                  * this install a bogus ssid when no ssid is specified
2132                  * so the firmware won't try to associate.
2133                  */
2134                 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n"));
2135                 return ipw_cmd(sc, IPW_CMD_SET_ESSID,
2136                         "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27"
2137                         "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31"
2138                         "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b"
2139                         "\x3c\x3d", IEEE80211_NWID_LEN);
2140         } else {
2141 #ifdef IPW_DEBUG
2142                 if (ipw_debug > 0) {
2143                         printf("Setting ESSID to ");
2144                         ieee80211_print_essid(ssid, ssidlen);
2145                         printf("\n");
2146                 }
2147 #endif
2148                 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen);
2149         }
2150 }
2151
2152 static int
2153 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags)
2154 {
2155         struct ipw_scan_options opts;
2156
2157         DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags));
2158         opts.channels = htole32(chanmask);
2159         opts.flags = htole32(flags);
2160         return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts));
2161 }
2162
2163 static int
2164 ipw_scan(struct ipw_softc *sc)
2165 {
2166         uint32_t params;
2167         int error;
2168
2169         DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags));
2170
2171         if (sc->flags & IPW_FLAG_SCANNING)
2172                 return (EBUSY);
2173         sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK;
2174
2175         /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */
2176         error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE);
2177         if (error != 0)
2178                 goto done;
2179
2180         /*
2181          * Setup null/bogus ssid so firmware doesn't use any previous
2182          * ssid to try and associate.  This is because the ``don't
2183          * associate'' option bit is broken (sigh).
2184          */
2185         error = ipw_setssid(sc, NULL, 0);
2186         if (error != 0)
2187                 goto done;
2188
2189         /*
2190          * NB: the adapter may be disabled on association lost;
2191          *     if so just re-enable it to kick off scanning.
2192          */
2193         DPRINTF(("Starting scan\n"));
2194         sc->sc_scan_timer = 3;
2195         if (sc->flags & IPW_FLAG_ENABLED) {
2196                 params = 0;                             /* XXX? */
2197                 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN,
2198                                 &params, sizeof(params));
2199         } else
2200                 error = ipw_enable(sc);
2201 done:
2202         if (error != 0) {
2203                 DPRINTF(("Scan failed\n"));
2204                 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK);
2205         }
2206         return (error);
2207 }
2208
2209 static int
2210 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan)
2211 {
2212         struct ifnet *ifp = sc->sc_ifp;
2213         struct ieee80211com *ic = ifp->if_l2com;
2214         uint32_t data;
2215         int error;
2216
2217         data = htole32(ieee80211_chan2ieee(ic, chan));
2218         DPRINTF(("Setting channel to %u\n", le32toh(data)));
2219         error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data);
2220         if (error == 0)
2221                 ipw_setcurchan(sc, chan);
2222         return error;
2223 }
2224
2225 static void
2226 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2227 {
2228         struct ifnet *ifp = vap->iv_ic->ic_ifp;
2229         struct ipw_softc *sc = ifp->if_softc;
2230         struct ieee80211_node *ni = vap->iv_bss;
2231         struct ipw_security security;
2232         uint32_t data;
2233         int error;
2234
2235         IPW_LOCK(sc);
2236         error = ipw_disable(sc);
2237         if (error != 0)
2238                 goto done;
2239
2240         memset(&security, 0, sizeof security);
2241         security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ?
2242             IPW_AUTH_SHARED : IPW_AUTH_OPEN;
2243         security.ciphers = htole32(IPW_CIPHER_NONE);
2244         DPRINTF(("Setting authmode to %u\n", security.authmode));
2245         error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security,
2246             sizeof security);
2247         if (error != 0)
2248                 goto done;
2249
2250         data = htole32(vap->iv_rtsthreshold);
2251         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2252         error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2253         if (error != 0)
2254                 goto done;
2255
2256         data = htole32(vap->iv_fragthreshold);
2257         DPRINTF(("Setting frag threshold to %u\n", le32toh(data)));
2258         error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2259         if (error != 0)
2260                 goto done;
2261
2262         if (vap->iv_flags & IEEE80211_F_PRIVACY) {
2263                 error = ipw_setwepkeys(sc);
2264                 if (error != 0)
2265                         goto done;
2266
2267                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) {
2268                         data = htole32(vap->iv_def_txkey);
2269                         DPRINTF(("Setting wep tx key index to %u\n",
2270                                 le32toh(data)));
2271                         error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data,
2272                             sizeof data);
2273                         if (error != 0)
2274                                 goto done;
2275                 }
2276         }
2277
2278         data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0);
2279         DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data)));
2280         error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data);
2281         if (error != 0)
2282                 goto done;
2283
2284         error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen);
2285         if (error != 0)
2286                 goto done;
2287
2288         error = ipw_setbssid(sc, ni->ni_bssid);
2289         if (error != 0)
2290                 goto done;
2291
2292         if (vap->iv_appie_wpa != NULL) {
2293                 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2294                 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len);
2295                 if (error != 0)
2296                         goto done;
2297         }
2298         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2299                 error = ipw_setchannel(sc, ni->ni_chan);
2300                 if (error != 0)
2301                         goto done;
2302         }
2303
2304         /* lock scan to ap's channel and enable associate */
2305         error = ipw_setscanopts(sc,
2306             1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0);
2307         if (error != 0)
2308                 goto done;
2309
2310         error = ipw_enable(sc);         /* finally, enable adapter */
2311         if (error == 0)
2312                 sc->flags |= IPW_FLAG_ASSOCIATING;
2313 done:
2314         IPW_UNLOCK(sc);
2315 }
2316
2317 static void
2318 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2319 {
2320         struct ifnet *ifp = vap->iv_ic->ic_ifp;
2321         struct ieee80211_node *ni = vap->iv_bss;
2322         struct ipw_softc *sc = ifp->if_softc;
2323
2324         IPW_LOCK(sc);
2325         DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":"));
2326         /*
2327          * NB: don't try to do this if ipw_stop_master has
2328          *     shutdown the firmware and disabled interrupts.
2329          */
2330         if (sc->flags & IPW_FLAG_FW_INITED) {
2331                 sc->flags &= ~IPW_FLAG_ASSOCIATED;
2332                 /*
2333                  * NB: firmware currently ignores bssid parameter, but
2334                  *     supply it in case this changes (follow linux driver).
2335                  */
2336                 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE,
2337                         ni->ni_bssid, IEEE80211_ADDR_LEN);
2338         }
2339         IPW_UNLOCK(sc);
2340 }
2341
2342 /*
2343  * Handler for sc_init_task.  This is a simple wrapper around ipw_init().
2344  * It is called on firmware panics or on watchdog timeouts.
2345  */
2346 static void
2347 ipw_init_task(void *context, int pending)
2348 {
2349         ipw_init(context);
2350 }
2351
2352 static void
2353 ipw_init(void *priv)
2354 {
2355         struct ipw_softc *sc = priv;
2356         struct ifnet *ifp = sc->sc_ifp;
2357         struct ieee80211com *ic = ifp->if_l2com;
2358
2359         IPW_LOCK(sc);
2360         ipw_init_locked(sc);
2361         IPW_UNLOCK(sc);
2362
2363         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2364                 ieee80211_start_all(ic);                /* start all vap's */
2365 }
2366
2367 static void
2368 ipw_init_locked(struct ipw_softc *sc)
2369 {
2370         struct ifnet *ifp = sc->sc_ifp;
2371         struct ieee80211com *ic = ifp->if_l2com;
2372         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2373         const struct firmware *fp;
2374         const struct ipw_firmware_hdr *hdr;
2375         const char *fw;
2376
2377         IPW_LOCK_ASSERT(sc);
2378
2379         DPRINTF(("%s: state %s flags 0x%x\n", __func__,
2380                 ieee80211_state_name[vap->iv_state], sc->flags));
2381
2382         /*
2383          * Avoid re-entrant calls.  We need to release the mutex in ipw_init()
2384          * when loading the firmware and we don't want to be called during this
2385          * operation.
2386          */
2387         if (sc->flags & IPW_FLAG_INIT_LOCKED)
2388                 return;
2389         sc->flags |= IPW_FLAG_INIT_LOCKED;
2390
2391         ipw_stop_locked(sc);
2392
2393         if (ipw_reset(sc) != 0) {
2394                 device_printf(sc->sc_dev, "could not reset adapter\n");
2395                 goto fail;
2396         }
2397
2398         if (sc->sc_firmware == NULL) {
2399                 device_printf(sc->sc_dev, "no firmware\n");
2400                 goto fail;
2401         }
2402         /* NB: consistency already checked on load */
2403         fp = sc->sc_firmware;
2404         hdr = (const struct ipw_firmware_hdr *)fp->data;
2405
2406         DPRINTF(("Loading firmware image '%s'\n", fp->name));
2407         fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz);
2408         if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) {
2409                 device_printf(sc->sc_dev, "could not load microcode\n");
2410                 goto fail;
2411         }
2412
2413         ipw_stop_master(sc);
2414
2415         /*
2416          * Setup tx, rx and status rings.
2417          */
2418         sc->txold = IPW_NTBD - 1;
2419         sc->txcur = 0;
2420         sc->txfree = IPW_NTBD - 2;
2421         sc->rxcur = IPW_NRBD - 1;
2422
2423         CSR_WRITE_4(sc, IPW_CSR_TX_BASE,  sc->tbd_phys);
2424         CSR_WRITE_4(sc, IPW_CSR_TX_SIZE,  IPW_NTBD);
2425         CSR_WRITE_4(sc, IPW_CSR_TX_READ,  0);
2426         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
2427
2428         CSR_WRITE_4(sc, IPW_CSR_RX_BASE,  sc->rbd_phys);
2429         CSR_WRITE_4(sc, IPW_CSR_RX_SIZE,  IPW_NRBD);
2430         CSR_WRITE_4(sc, IPW_CSR_RX_READ,  0);
2431         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
2432
2433         CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys);
2434
2435         fw = (const char *)fp->data + sizeof *hdr;
2436         if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) {
2437                 device_printf(sc->sc_dev, "could not load firmware\n");
2438                 goto fail;
2439         }
2440
2441         sc->flags |= IPW_FLAG_FW_INITED;
2442
2443         /* retrieve information tables base addresses */
2444         sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE);
2445         sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE);
2446
2447         ipw_write_table1(sc, IPW_INFO_LOCK, 0);
2448
2449         if (ipw_config(sc) != 0) {
2450                 device_printf(sc->sc_dev, "device configuration failed\n");
2451                 goto fail;
2452         }
2453
2454         callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
2455         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2456         ifp->if_drv_flags |= IFF_DRV_RUNNING;
2457
2458         sc->flags &=~ IPW_FLAG_INIT_LOCKED;
2459         return;
2460
2461 fail:
2462         ipw_stop_locked(sc);
2463         sc->flags &=~ IPW_FLAG_INIT_LOCKED;
2464 }
2465
2466 static int
2467 ipw_config(struct ipw_softc *sc)
2468 {
2469         struct ifnet *ifp = sc->sc_ifp;
2470         struct ieee80211com *ic = ifp->if_l2com;
2471         struct ipw_configuration config;
2472         uint32_t data;
2473         int error;
2474
2475         error = ipw_disable(sc);
2476         if (error != 0)
2477                 return error;
2478
2479         switch (ic->ic_opmode) {
2480         case IEEE80211_M_STA:
2481         case IEEE80211_M_HOSTAP:
2482         case IEEE80211_M_WDS:           /* XXX */
2483                 data = htole32(IPW_MODE_BSS);
2484                 break;
2485         case IEEE80211_M_IBSS:
2486         case IEEE80211_M_AHDEMO:
2487                 data = htole32(IPW_MODE_IBSS);
2488                 break;
2489         case IEEE80211_M_MONITOR:
2490                 data = htole32(IPW_MODE_MONITOR);
2491                 break;
2492         default:
2493                 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
2494                 return EINVAL;
2495         }
2496         DPRINTF(("Setting mode to %u\n", le32toh(data)));
2497         error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data);
2498         if (error != 0)
2499                 return error;
2500
2501         if (ic->ic_opmode == IEEE80211_M_IBSS ||
2502             ic->ic_opmode == IEEE80211_M_MONITOR) {
2503                 error = ipw_setchannel(sc, ic->ic_curchan);
2504                 if (error != 0)
2505                         return error;
2506         }
2507
2508         if (ic->ic_opmode == IEEE80211_M_MONITOR)
2509                 return ipw_enable(sc);
2510
2511         config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK |
2512             IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE);
2513         if (ic->ic_opmode == IEEE80211_M_IBSS)
2514                 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START);
2515         if (ifp->if_flags & IFF_PROMISC)
2516                 config.flags |= htole32(IPW_CFG_PROMISCUOUS);
2517         config.bss_chan = htole32(0x3fff); /* channels 1-14 */
2518         config.ibss_chan = htole32(0x7ff); /* channels 1-11 */
2519         DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags)));
2520         error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config);
2521         if (error != 0)
2522                 return error;
2523
2524         data = htole32(0xf); /* 1, 2, 5.5, 11 */
2525         DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data)));
2526         error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data);
2527         if (error != 0)
2528                 return error;
2529
2530         /* Use the same rate set */
2531         DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data)));
2532         error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data);
2533         if (error != 0)
2534                 return error;
2535
2536         /* Use the same rate set */
2537         DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data)));
2538         error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data);
2539         if (error != 0)
2540                 return error;
2541
2542         data = htole32(IPW_POWER_MODE_CAM);
2543         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2544         error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data);
2545         if (error != 0)
2546                 return error;
2547
2548         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2549                 data = htole32(32); /* default value */
2550                 DPRINTF(("Setting tx power index to %u\n", le32toh(data)));
2551                 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data,
2552                     sizeof data);
2553                 if (error != 0)
2554                         return error;
2555         }
2556
2557         return 0;
2558 }
2559
2560 static void
2561 ipw_stop(void *priv)
2562 {
2563         struct ipw_softc *sc = priv;
2564
2565         IPW_LOCK(sc);
2566         ipw_stop_locked(sc);
2567         IPW_UNLOCK(sc);
2568 }
2569
2570 static void
2571 ipw_stop_locked(struct ipw_softc *sc)
2572 {
2573         struct ifnet *ifp = sc->sc_ifp;
2574         int i;
2575
2576         IPW_LOCK_ASSERT(sc);
2577
2578         callout_stop(&sc->sc_wdtimer);
2579         ipw_stop_master(sc);
2580
2581         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET);
2582
2583         /*
2584          * Release tx buffers.
2585          */
2586         for (i = 0; i < IPW_NTBD; i++)
2587                 ipw_release_sbd(sc, &sc->stbd_list[i]);
2588
2589         sc->sc_tx_timer = 0;
2590         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2591 }
2592
2593 static int
2594 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)
2595 {
2596         struct ipw_softc *sc = arg1;
2597         uint32_t i, size, buf[256];
2598
2599         memset(buf, 0, sizeof buf);
2600
2601         if (!(sc->flags & IPW_FLAG_FW_INITED))
2602                 return SYSCTL_OUT(req, buf, sizeof buf);
2603
2604         CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base);
2605
2606         size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256);
2607         for (i = 1; i < size; i++)
2608                 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA));
2609
2610         return SYSCTL_OUT(req, buf, size);
2611 }
2612
2613 static int
2614 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)
2615 {
2616         struct ipw_softc *sc = arg1;
2617         int val;
2618
2619         val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) &&
2620                 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED));
2621
2622         return SYSCTL_OUT(req, &val, sizeof val);
2623 }
2624
2625 static uint32_t
2626 ipw_read_table1(struct ipw_softc *sc, uint32_t off)
2627 {
2628         return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off));
2629 }
2630
2631 static void
2632 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info)
2633 {
2634         MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info);
2635 }
2636
2637 #if 0
2638 static int
2639 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len)
2640 {
2641         uint32_t addr, info;
2642         uint16_t count, size;
2643         uint32_t total;
2644
2645         /* addr[4] + count[2] + size[2] */
2646         addr = MEM_READ_4(sc, sc->table2_base + off);
2647         info = MEM_READ_4(sc, sc->table2_base + off + 4);
2648
2649         count = info >> 16;
2650         size = info & 0xffff;
2651         total = count * size;
2652
2653         if (total > *len) {
2654                 *len = total;
2655                 return EINVAL;
2656         }
2657
2658         *len = total;
2659         ipw_read_mem_1(sc, addr, buf, total);
2660
2661         return 0;
2662 }
2663
2664 static void
2665 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2666     bus_size_t count)
2667 {
2668         for (; count > 0; offset++, datap++, count--) {
2669                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2670                 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3));
2671         }
2672 }
2673 #endif
2674
2675 static void
2676 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap,
2677     bus_size_t count)
2678 {
2679         for (; count > 0; offset++, datap++, count--) {
2680                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2681                 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap);
2682         }
2683 }
2684
2685 static void
2686 ipw_scan_start(struct ieee80211com *ic)
2687 {
2688         struct ifnet *ifp = ic->ic_ifp;
2689         struct ipw_softc *sc = ifp->if_softc;
2690
2691         IPW_LOCK(sc);
2692         ipw_scan(sc);
2693         IPW_UNLOCK(sc);
2694 }
2695
2696 static void
2697 ipw_set_channel(struct ieee80211com *ic)
2698 {
2699         struct ifnet *ifp = ic->ic_ifp;
2700         struct ipw_softc *sc = ifp->if_softc;
2701
2702         IPW_LOCK(sc);
2703         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2704                 ipw_disable(sc);
2705                 ipw_setchannel(sc, ic->ic_curchan);
2706                 ipw_enable(sc);
2707         }
2708         IPW_UNLOCK(sc);
2709 }
2710
2711 static void
2712 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
2713 {
2714         /* NB: all channels are scanned at once */
2715 }
2716
2717 static void
2718 ipw_scan_mindwell(struct ieee80211_scan_state *ss)
2719 {
2720         /* NB: don't try to abort scan; wait for firmware to finish */
2721 }
2722
2723 static void
2724 ipw_scan_end(struct ieee80211com *ic)
2725 {
2726         struct ifnet *ifp = ic->ic_ifp;
2727         struct ipw_softc *sc = ifp->if_softc;
2728
2729         IPW_LOCK(sc);
2730         sc->flags &= ~IPW_FLAG_SCANNING;
2731         IPW_UNLOCK(sc);
2732 }