sys/dev/ipw/if_ipw.c

   1 /*      $FreeBSD$       */
   2
   3 /*-
   4  * Copyright (c) 2004-2006
   5  *      Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
   6  * Copyright (c) 2006 Sam Leffler, Errno Consulting
   7  * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice unmodified, this list of conditions, and the following
  14  *    disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __FBSDID("$FreeBSD$");
  34
  35 /*-
  36  * Intel(R) PRO/Wireless 2100 MiniPCI driver
  37  * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
  38  */
  39
  40 #include <sys/param.h>
  41 #include <sys/sysctl.h>
  42 #include <sys/sockio.h>
  43 #include <sys/mbuf.h>
  44 #include <sys/kernel.h>
  45 #include <sys/socket.h>
  46 #include <sys/systm.h>
  47 #include <sys/malloc.h>
  48 #include <sys/queue.h>
  49 #include <sys/taskqueue.h>
  50 #include <sys/module.h>
  51 #include <sys/bus.h>
  52 #include <sys/endian.h>
  53 #include <sys/linker.h>
  54 #include <sys/firmware.h>
  55
  56 #include <machine/bus.h>
  57 #include <machine/resource.h>
  58 #include <sys/rman.h>
  59
  60 #include <dev/pci/pcireg.h>
  61 #include <dev/pci/pcivar.h>
  62
  63 #include <net/bpf.h>
  64 #include <net/if.h>
  65 #include <net/if_arp.h>
  66 #include <net/ethernet.h>
  67 #include <net/if_dl.h>
  68 #include <net/if_media.h>
  69 #include <net/if_types.h>
  70
  71 #include <net80211/ieee80211_var.h>
  72 #include <net80211/ieee80211_radiotap.h>
  73
  74 #include <netinet/in.h>
  75 #include <netinet/in_systm.h>
  76 #include <netinet/in_var.h>
  77 #include <netinet/ip.h>
  78 #include <netinet/if_ether.h>
  79
  80 #include <dev/ipw/if_ipwreg.h>
  81 #include <dev/ipw/if_ipwvar.h>
  82
  83 #define IPW_DEBUG
  84 #ifdef IPW_DEBUG
  85 #define DPRINTF(x)      do { if (ipw_debug > 0) printf x; } while (0)
  86 #define DPRINTFN(n, x)  do { if (ipw_debug >= (n)) printf x; } while (0)
  87 int ipw_debug = 0;
  88 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level");
  89 #else
  90 #define DPRINTF(x)
  91 #define DPRINTFN(n, x)
  92 #endif
  93
  94 MODULE_DEPEND(ipw, pci,  1, 1, 1);
  95 MODULE_DEPEND(ipw, wlan, 1, 1, 1);
  96 MODULE_DEPEND(ipw, firmware, 1, 1, 1);
  97
  98 struct ipw_ident {
  99         uint16_t        vendor;
 100         uint16_t        device;
 101         const char      *name;
 102 };
 103
 104 static const struct ipw_ident ipw_ident_table[] = {
 105         { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" },
 106
 107         { 0, 0, NULL }
 108 };
 109
 110 static struct ieee80211vap *ipw_vap_create(struct ieee80211com *,
 111                     const char name[IFNAMSIZ], int unit, int opmode, int flags,
 112                     const uint8_t bssid[IEEE80211_ADDR_LEN],
 113                     const uint8_t mac[IEEE80211_ADDR_LEN]);
 114 static void     ipw_vap_delete(struct ieee80211vap *);
 115 static int      ipw_dma_alloc(struct ipw_softc *);
 116 static void     ipw_release(struct ipw_softc *);
 117 static void     ipw_media_status(struct ifnet *, struct ifmediareq *);
 118 static int      ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 119 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t);
 120 static void     ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *);
 121 static void     ipw_assocsuccess(void *, int);
 122 static void     ipw_assocfailed(void *, int);
 123 static void     ipw_scandone(void *, int);
 124 static void     ipw_bmiss(void *, int);
 125 static void     ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *);
 126 static void     ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *,
 127                     struct ipw_soft_bd *, struct ipw_soft_buf *);
 128 static void     ipw_rx_intr(struct ipw_softc *);
 129 static void     ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *);
 130 static void     ipw_tx_intr(struct ipw_softc *);
 131 static void     ipw_intr(void *);
 132 static void     ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int);
 133 static const char * ipw_cmdname(int);
 134 static int      ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t);
 135 static int      ipw_tx_start(struct ifnet *, struct mbuf *,
 136                     struct ieee80211_node *);
 137 static int      ipw_raw_xmit(struct ieee80211_node *, struct mbuf *,
 138                     const struct ieee80211_bpf_params *);
 139 static void     ipw_start(struct ifnet *);
 140 static void     ipw_start_locked(struct ifnet *);
 141 static void     ipw_watchdog(void *);
 142 static int      ipw_ioctl(struct ifnet *, u_long, caddr_t);
 143 static void     ipw_stop_master(struct ipw_softc *);
 144 static int      ipw_enable(struct ipw_softc *);
 145 static int      ipw_disable(struct ipw_softc *);
 146 static int      ipw_reset(struct ipw_softc *);
 147 static int      ipw_load_ucode(struct ipw_softc *, const char *, int);
 148 static int      ipw_load_firmware(struct ipw_softc *, const char *, int);
 149 static int      ipw_config(struct ipw_softc *);
 150 static void     ipw_assoc_task(void *, int);
 151 static void     ipw_disassoc_task(void *, int);
 152 static void     ipw_init_task(void *, int);
 153 static void     ipw_init(void *);
 154 static void     ipw_init_locked(struct ipw_softc *);
 155 static void     ipw_stop(void *);
 156 static void     ipw_stop_locked(struct ipw_softc *);
 157 static int      ipw_sysctl_stats(SYSCTL_HANDLER_ARGS);
 158 static int      ipw_sysctl_radio(SYSCTL_HANDLER_ARGS);
 159 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t);
 160 static void     ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t);
 161 #if 0
 162 static int      ipw_read_table2(struct ipw_softc *, uint32_t, void *,
 163                     uint32_t *);
 164 static void     ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *,
 165                     bus_size_t);
 166 #endif
 167 static void     ipw_write_mem_1(struct ipw_softc *, bus_size_t,
 168                     const uint8_t *, bus_size_t);
 169 static void     ipw_scan_task(void *, int);
 170 static int      ipw_scan(struct ipw_softc *);
 171 static void     ipw_scan_start(struct ieee80211com *);
 172 static void     ipw_scan_end(struct ieee80211com *);
 173 static void     ipw_set_channel(struct ieee80211com *);
 174 static void     ipw_scan_curchan(struct ieee80211_scan_state *,
 175                     unsigned long maxdwell);
 176 static void     ipw_scan_mindwell(struct ieee80211_scan_state *);
 177
 178 static int ipw_probe(device_t);
 179 static int ipw_attach(device_t);
 180 static int ipw_detach(device_t);
 181 static int ipw_shutdown(device_t);
 182 static int ipw_suspend(device_t);
 183 static int ipw_resume(device_t);
 184
 185 static device_method_t ipw_methods[] = {
 186         /* Device interface */
 187         DEVMETHOD(device_probe,         ipw_probe),
 188         DEVMETHOD(device_attach,        ipw_attach),
 189         DEVMETHOD(device_detach,        ipw_detach),
 190         DEVMETHOD(device_shutdown,      ipw_shutdown),
 191         DEVMETHOD(device_suspend,       ipw_suspend),
 192         DEVMETHOD(device_resume,        ipw_resume),
 193
 194         { 0, 0 }
 195 };
 196
 197 static driver_t ipw_driver = {
 198         "ipw",
 199         ipw_methods,
 200         sizeof (struct ipw_softc)
 201 };
 202
 203 static devclass_t ipw_devclass;
 204
 205 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, 0, 0);
 206 DRIVER_MODULE(ipw, cardbus, ipw_driver, ipw_devclass, 0, 0);
 207
 208 static int
 209 ipw_probe(device_t dev)
 210 {
 211         const struct ipw_ident *ident;
 212
 213         for (ident = ipw_ident_table; ident->name != NULL; ident++) {
 214                 if (pci_get_vendor(dev) == ident->vendor &&
 215                     pci_get_device(dev) == ident->device) {
 216                         device_set_desc(dev, ident->name);
 217                         return 0;
 218                 }
 219         }
 220         return ENXIO;
 221 }
 222
 223 /* Base Address Register */
 224 #define IPW_PCI_BAR0    0x10
 225
 226 static int
 227 ipw_attach(device_t dev)
 228 {
 229         struct ipw_softc *sc = device_get_softc(dev);
 230         struct ifnet *ifp;
 231         struct ieee80211com *ic;
 232         struct ieee80211_channel *c;
 233         uint16_t val;
 234         int error, i;
 235
 236         sc->sc_dev = dev;
 237
 238         mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
 239             MTX_DEF | MTX_RECURSE);
 240
 241         TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc);
 242         TASK_INIT(&sc->sc_scan_task, 0, ipw_scan_task, sc);
 243         TASK_INIT(&sc->sc_bmiss_task, 0, ipw_bmiss, sc);
 244         callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
 245
 246         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 247                 device_printf(dev, "chip is in D%d power mode "
 248                     "-- setting to D0\n", pci_get_powerstate(dev));
 249                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 250         }
 251
 252         pci_write_config(dev, 0x41, 0, 1);
 253
 254         /* enable bus-mastering */
 255         pci_enable_busmaster(dev);
 256
 257         sc->mem_rid = IPW_PCI_BAR0;
 258         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
 259             RF_ACTIVE);
 260         if (sc->mem == NULL) {
 261                 device_printf(dev, "could not allocate memory resource\n");
 262                 goto fail;
 263         }
 264
 265         sc->sc_st = rman_get_bustag(sc->mem);
 266         sc->sc_sh = rman_get_bushandle(sc->mem);
 267
 268         sc->irq_rid = 0;
 269         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
 270             RF_ACTIVE | RF_SHAREABLE);
 271         if (sc->irq == NULL) {
 272                 device_printf(dev, "could not allocate interrupt resource\n");
 273                 goto fail1;
 274         }
 275
 276         if (ipw_reset(sc) != 0) {
 277                 device_printf(dev, "could not reset adapter\n");
 278                 goto fail2;
 279         }
 280
 281         if (ipw_dma_alloc(sc) != 0) {
 282                 device_printf(dev, "could not allocate DMA resources\n");
 283                 goto fail2;
 284         }
 285
 286         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 287         if (ifp == NULL) {
 288                 device_printf(dev, "can not if_alloc()\n");
 289                 goto fail3;
 290         }
 291         ic = ifp->if_l2com;
 292
 293         ifp->if_softc = sc;
 294         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 295         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 296         ifp->if_init = ipw_init;
 297         ifp->if_ioctl = ipw_ioctl;
 298         ifp->if_start = ipw_start;
 299         IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
 300         ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
 301         IFQ_SET_READY(&ifp->if_snd);
 302
 303         ic->ic_ifp = ifp;
 304         ic->ic_opmode = IEEE80211_M_STA;
 305         ic->ic_phytype = IEEE80211_T_DS;
 306
 307         /* set device capabilities */
 308         ic->ic_caps = IEEE80211_C_IBSS          /* IBSS mode supported */
 309                 | IEEE80211_C_MONITOR           /* monitor mode supported */
 310                 | IEEE80211_C_PMGT              /* power save supported */
 311                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 312                 | IEEE80211_C_WPA               /* 802.11i supported */
 313                 ;
 314
 315         /* read MAC address from EEPROM */
 316         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0);
 317         ic->ic_myaddr[0] = val >> 8;
 318         ic->ic_myaddr[1] = val & 0xff;
 319         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1);
 320         ic->ic_myaddr[2] = val >> 8;
 321         ic->ic_myaddr[3] = val & 0xff;
 322         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2);
 323         ic->ic_myaddr[4] = val >> 8;
 324         ic->ic_myaddr[5] = val & 0xff;
 325
 326         /* set supported .11b channels (read from EEPROM) */
 327         if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0)
 328                 val = 0x7ff; /* default to channels 1-11 */
 329         val <<= 1;
 330         for (i = 1; i < 16; i++) {
 331                 if (val & (1 << i)) {
 332                         c = &ic->ic_channels[ic->ic_nchans++];
 333                         c->ic_freq = ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 334                         c->ic_flags = IEEE80211_CHAN_B;
 335                         c->ic_ieee = i;
 336                 }
 337         }
 338
 339         /* check support for radio transmitter switch in EEPROM */
 340         if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8))
 341                 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH;
 342
 343         ieee80211_ifattach(ic);
 344         ic->ic_scan_start = ipw_scan_start;
 345         ic->ic_scan_end = ipw_scan_end;
 346         ic->ic_set_channel = ipw_set_channel;
 347         ic->ic_scan_curchan = ipw_scan_curchan;
 348         ic->ic_scan_mindwell = ipw_scan_mindwell;
 349         ic->ic_raw_xmit = ipw_raw_xmit;
 350
 351         ic->ic_vap_create = ipw_vap_create;
 352         ic->ic_vap_delete = ipw_vap_delete;
 353
 354         bpfattach(ifp, DLT_IEEE802_11_RADIO,
 355             sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap));
 356
 357         sc->sc_rxtap_len = sizeof sc->sc_rxtap;
 358         sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
 359         sc->sc_rxtap.wr_ihdr.it_present = htole32(IPW_RX_RADIOTAP_PRESENT);
 360
 361         sc->sc_txtap_len = sizeof sc->sc_txtap;
 362         sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
 363         sc->sc_txtap.wt_ihdr.it_present = htole32(IPW_TX_RADIOTAP_PRESENT);
 364
 365         /*
 366          * Add a few sysctl knobs.
 367          */
 368         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 369             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio",
 370             CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I",
 371             "radio transmitter switch state (0=off, 1=on)");
 372
 373         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 374             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
 375             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S",
 376             "statistics");
 377
 378         /*
 379          * Hook our interrupt after all initialization is complete.
 380          */
 381         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 382             NULL, ipw_intr, sc, &sc->sc_ih);
 383         if (error != 0) {
 384                 device_printf(dev, "could not set up interrupt\n");
 385                 goto fail4;
 386         }
 387
 388         if (bootverbose)
 389                 ieee80211_announce(ic);
 390
 391         return 0;
 392 fail4:
 393         if_free(ifp);
 394 fail3:
 395         ipw_release(sc);
 396 fail2:
 397         bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
 398 fail1:
 399         bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
 400 fail:
 401         mtx_destroy(&sc->sc_mtx);
 402         return ENXIO;
 403 }
 404
 405 static int
 406 ipw_detach(device_t dev)
 407 {
 408         struct ipw_softc *sc = device_get_softc(dev);
 409         struct ifnet *ifp = sc->sc_ifp;
 410         struct ieee80211com *ic = ifp->if_l2com;
 411
 412         ipw_stop(sc);
 413
 414         bpfdetach(ifp);
 415         ieee80211_ifdetach(ic);
 416
 417         callout_drain(&sc->sc_wdtimer);
 418         taskqueue_drain(taskqueue_fast, &sc->sc_init_task);
 419         taskqueue_drain(taskqueue_fast, &sc->sc_scan_task);
 420         taskqueue_drain(taskqueue_fast, &sc->sc_bmiss_task);
 421
 422         ipw_release(sc);
 423
 424         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 425         bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
 426
 427         bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
 428
 429         if_free(ifp);
 430
 431         if (sc->sc_firmware != NULL) {
 432                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 433                 sc->sc_firmware = NULL;
 434         }
 435
 436         mtx_destroy(&sc->sc_mtx);
 437
 438         return 0;
 439 }
 440
 441 static struct ieee80211vap *
 442 ipw_vap_create(struct ieee80211com *ic,
 443         const char name[IFNAMSIZ], int unit, int opmode, int flags,
 444         const uint8_t bssid[IEEE80211_ADDR_LEN],
 445         const uint8_t mac[IEEE80211_ADDR_LEN])
 446 {
 447         struct ifnet *ifp = ic->ic_ifp;
 448         struct ipw_softc *sc = ifp->if_softc;
 449         struct ipw_vap *ivp;
 450         struct ieee80211vap *vap;
 451         const struct firmware *fp;
 452         const struct ipw_firmware_hdr *hdr;
 453         const char *imagename;
 454
 455         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 456                 return NULL;
 457
 458         switch (opmode) {
 459         case IEEE80211_M_STA:
 460                 imagename = "ipw_bss";
 461                 break;
 462         case IEEE80211_M_IBSS:
 463                 imagename = "ipw_ibss";
 464                 break;
 465         case IEEE80211_M_MONITOR:
 466                 imagename = "ipw_monitor";
 467                 break;
 468         default:
 469                 return NULL;
 470         }
 471
 472         /*
 473          * Load firmware image using the firmware(9) subsystem.  Doing
 474          * this unlocked is ok since we're single-threaded by the
 475          * 802.11 layer.
 476          */
 477         if (sc->sc_firmware == NULL ||
 478             strcmp(sc->sc_firmware->name, imagename) != 0) {
 479                 if (sc->sc_firmware != NULL)
 480                         firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 481                 sc->sc_firmware = firmware_get(imagename);
 482         }
 483         if (sc->sc_firmware == NULL) {
 484                 device_printf(sc->sc_dev,
 485                     "could not load firmware image '%s'\n", imagename);
 486                 return NULL;
 487         }
 488         fp = sc->sc_firmware;
 489         if (fp->datasize < sizeof *hdr) {
 490                 device_printf(sc->sc_dev,
 491                     "firmware image too short %zu\n", fp->datasize);
 492                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 493                 sc->sc_firmware = NULL;
 494                 return NULL;
 495         }
 496         hdr = (const struct ipw_firmware_hdr *)fp->data;
 497         if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) +
 498             le32toh(hdr->ucodesz)) {
 499                 device_printf(sc->sc_dev,
 500                     "firmware image too short %zu\n", fp->datasize);
 501                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 502                 sc->sc_firmware = NULL;
 503                 return NULL;
 504         }
 505
 506         ivp = (struct ipw_vap *) malloc(sizeof(struct ipw_vap),
 507             M_80211_VAP, M_NOWAIT | M_ZERO);
 508         if (ivp == NULL)
 509                 return NULL;
 510         vap = &ivp->vap;
 511
 512         TASK_INIT(&ivp->assoc_task, 0, ipw_assoc_task, vap);
 513         TASK_INIT(&ivp->disassoc_task, 0, ipw_disassoc_task, vap);
 514         TASK_INIT(&ivp->assoc_success_task, 0, ipw_assocsuccess, vap);
 515         TASK_INIT(&ivp->assoc_failed_task, 0, ipw_assocfailed, vap);
 516         TASK_INIT(&ivp->scandone_task, 0, ipw_scandone, vap);
 517
 518         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
 519         /* override with driver methods */
 520         ivp->newstate = vap->iv_newstate;
 521         vap->iv_newstate = ipw_newstate;
 522
 523         /* complete setup */
 524         ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status);
 525         ic->ic_opmode = opmode;
 526         return vap;
 527 }
 528
 529 static void
 530 ipw_vap_delete(struct ieee80211vap *vap)
 531 {
 532         struct ipw_vap *ivp = IPW_VAP(vap);
 533
 534         ieee80211_vap_detach(vap);
 535         free(ivp, M_80211_VAP);
 536 }
 537
 538 static int
 539 ipw_dma_alloc(struct ipw_softc *sc)
 540 {
 541         struct ipw_soft_bd *sbd;
 542         struct ipw_soft_hdr *shdr;
 543         struct ipw_soft_buf *sbuf;
 544         bus_addr_t physaddr;
 545         int error, i;
 546
 547         /*
 548          * Allocate and map tx ring.
 549          */
 550         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 551             BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL,
 552             NULL, &sc->tbd_dmat);
 553         if (error != 0) {
 554                 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
 555                 goto fail;
 556         }
 557
 558         error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list,
 559             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map);
 560         if (error != 0) {
 561                 device_printf(sc->sc_dev,
 562                     "could not allocate tx ring DMA memory\n");
 563                 goto fail;
 564         }
 565
 566         error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list,
 567             IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0);
 568         if (error != 0) {
 569                 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n");
 570                 goto fail;
 571         }
 572
 573         /*
 574          * Allocate and map rx ring.
 575          */
 576         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 577             BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL,
 578             NULL, &sc->rbd_dmat);
 579         if (error != 0) {
 580                 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n");
 581                 goto fail;
 582         }
 583
 584         error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list,
 585             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map);
 586         if (error != 0) {
 587                 device_printf(sc->sc_dev,
 588                     "could not allocate rx ring DMA memory\n");
 589                 goto fail;
 590         }
 591
 592         error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list,
 593             IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0);
 594         if (error != 0) {
 595                 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n");
 596                 goto fail;
 597         }
 598
 599         /*
 600          * Allocate and map status ring.
 601          */
 602         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 603             BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0,
 604             NULL, NULL, &sc->status_dmat);
 605         if (error != 0) {
 606                 device_printf(sc->sc_dev,
 607                     "could not create status ring DMA tag\n");
 608                 goto fail;
 609         }
 610
 611         error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list,
 612             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map);
 613         if (error != 0) {
 614                 device_printf(sc->sc_dev,
 615                     "could not allocate status ring DMA memory\n");
 616                 goto fail;
 617         }
 618
 619         error = bus_dmamap_load(sc->status_dmat, sc->status_map,
 620             sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys,
 621             0);
 622         if (error != 0) {
 623                 device_printf(sc->sc_dev,
 624                     "could not map status ring DMA memory\n");
 625                 goto fail;
 626         }
 627
 628         /*
 629          * Allocate command DMA map.
 630          */
 631         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 632             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1,
 633             sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat);
 634         if (error != 0) {
 635                 device_printf(sc->sc_dev, "could not create command DMA tag\n");
 636                 goto fail;
 637         }
 638
 639         error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map);
 640         if (error != 0) {
 641                 device_printf(sc->sc_dev,
 642                     "could not create command DMA map\n");
 643                 goto fail;
 644         }
 645
 646         /*
 647          * Allocate headers DMA maps.
 648          */
 649         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 650             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1,
 651             sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat);
 652         if (error != 0) {
 653                 device_printf(sc->sc_dev, "could not create header DMA tag\n");
 654                 goto fail;
 655         }
 656
 657         SLIST_INIT(&sc->free_shdr);
 658         for (i = 0; i < IPW_NDATA; i++) {
 659                 shdr = &sc->shdr_list[i];
 660                 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map);
 661                 if (error != 0) {
 662                         device_printf(sc->sc_dev,
 663                             "could not create header DMA map\n");
 664                         goto fail;
 665                 }
 666                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
 667         }
 668
 669         /*
 670          * Allocate tx buffers DMA maps.
 671          */
 672         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 673             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0,
 674             NULL, NULL, &sc->txbuf_dmat);
 675         if (error != 0) {
 676                 device_printf(sc->sc_dev, "could not create tx DMA tag\n");
 677                 goto fail;
 678         }
 679
 680         SLIST_INIT(&sc->free_sbuf);
 681         for (i = 0; i < IPW_NDATA; i++) {
 682                 sbuf = &sc->tx_sbuf_list[i];
 683                 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map);
 684                 if (error != 0) {
 685                         device_printf(sc->sc_dev,
 686                             "could not create tx DMA map\n");
 687                         goto fail;
 688                 }
 689                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
 690         }
 691
 692         /*
 693          * Initialize tx ring.
 694          */
 695         for (i = 0; i < IPW_NTBD; i++) {
 696                 sbd = &sc->stbd_list[i];
 697                 sbd->bd = &sc->tbd_list[i];
 698                 sbd->type = IPW_SBD_TYPE_NOASSOC;
 699         }
 700
 701         /*
 702          * Pre-allocate rx buffers and DMA maps.
 703          */
 704         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 705             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
 706             NULL, &sc->rxbuf_dmat);
 707         if (error != 0) {
 708                 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
 709                 goto fail;
 710         }
 711
 712         for (i = 0; i < IPW_NRBD; i++) {
 713                 sbd = &sc->srbd_list[i];
 714                 sbuf = &sc->rx_sbuf_list[i];
 715                 sbd->bd = &sc->rbd_list[i];
 716
 717                 sbuf->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
 718                 if (sbuf->m == NULL) {
 719                         device_printf(sc->sc_dev,
 720                             "could not allocate rx mbuf\n");
 721                         error = ENOMEM;
 722                         goto fail;
 723                 }
 724
 725                 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map);
 726                 if (error != 0) {
 727                         device_printf(sc->sc_dev,
 728                             "could not create rx DMA map\n");
 729                         goto fail;
 730                 }
 731
 732                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
 733                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
 734                     &physaddr, 0);
 735                 if (error != 0) {
 736                         device_printf(sc->sc_dev,
 737                             "could not map rx DMA memory\n");
 738                         goto fail;
 739                 }
 740
 741                 sbd->type = IPW_SBD_TYPE_DATA;
 742                 sbd->priv = sbuf;
 743                 sbd->bd->physaddr = htole32(physaddr);
 744                 sbd->bd->len = htole32(MCLBYTES);
 745         }
 746
 747         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
 748
 749         return 0;
 750
 751 fail:   ipw_release(sc);
 752         return error;
 753 }
 754
 755 static void
 756 ipw_release(struct ipw_softc *sc)
 757 {
 758         struct ipw_soft_buf *sbuf;
 759         int i;
 760
 761         if (sc->tbd_dmat != NULL) {
 762                 if (sc->stbd_list != NULL) {
 763                         bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map);
 764                         bus_dmamem_free(sc->tbd_dmat, sc->tbd_list,
 765                             sc->tbd_map);
 766                 }
 767                 bus_dma_tag_destroy(sc->tbd_dmat);
 768         }
 769
 770         if (sc->rbd_dmat != NULL) {
 771                 if (sc->rbd_list != NULL) {
 772                         bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map);
 773                         bus_dmamem_free(sc->rbd_dmat, sc->rbd_list,
 774                             sc->rbd_map);
 775                 }
 776                 bus_dma_tag_destroy(sc->rbd_dmat);
 777         }
 778
 779         if (sc->status_dmat != NULL) {
 780                 if (sc->status_list != NULL) {
 781                         bus_dmamap_unload(sc->status_dmat, sc->status_map);
 782                         bus_dmamem_free(sc->status_dmat, sc->status_list,
 783                             sc->status_map);
 784                 }
 785                 bus_dma_tag_destroy(sc->status_dmat);
 786         }
 787
 788         for (i = 0; i < IPW_NTBD; i++)
 789                 ipw_release_sbd(sc, &sc->stbd_list[i]);
 790
 791         if (sc->cmd_dmat != NULL) {
 792                 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map);
 793                 bus_dma_tag_destroy(sc->cmd_dmat);
 794         }
 795
 796         if (sc->hdr_dmat != NULL) {
 797                 for (i = 0; i < IPW_NDATA; i++)
 798                         bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map);
 799                 bus_dma_tag_destroy(sc->hdr_dmat);
 800         }
 801
 802         if (sc->txbuf_dmat != NULL) {
 803                 for (i = 0; i < IPW_NDATA; i++) {
 804                         bus_dmamap_destroy(sc->txbuf_dmat,
 805                             sc->tx_sbuf_list[i].map);
 806                 }
 807                 bus_dma_tag_destroy(sc->txbuf_dmat);
 808         }
 809
 810         if (sc->rxbuf_dmat != NULL) {
 811                 for (i = 0; i < IPW_NRBD; i++) {
 812                         sbuf = &sc->rx_sbuf_list[i];
 813                         if (sbuf->m != NULL) {
 814                                 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map,
 815                                     BUS_DMASYNC_POSTREAD);
 816                                 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
 817                                 m_freem(sbuf->m);
 818                         }
 819                         bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map);
 820                 }
 821                 bus_dma_tag_destroy(sc->rxbuf_dmat);
 822         }
 823 }
 824
 825 static int
 826 ipw_shutdown(device_t dev)
 827 {
 828         struct ipw_softc *sc = device_get_softc(dev);
 829
 830         ipw_stop(sc);
 831
 832         return 0;
 833 }
 834
 835 static int
 836 ipw_suspend(device_t dev)
 837 {
 838         struct ipw_softc *sc = device_get_softc(dev);
 839
 840         ipw_stop(sc);
 841
 842         return 0;
 843 }
 844
 845 static int
 846 ipw_resume(device_t dev)
 847 {
 848         struct ipw_softc *sc = device_get_softc(dev);
 849         struct ifnet *ifp = sc->sc_ifp;
 850
 851         pci_write_config(dev, 0x41, 0, 1);
 852
 853         if (ifp->if_flags & IFF_UP)
 854                 ipw_init(sc);
 855
 856         return 0;
 857 }
 858
 859 static int
 860 ipw_cvtrate(int ipwrate)
 861 {
 862         switch (ipwrate) {
 863         case IPW_RATE_DS1:      return 2;
 864         case IPW_RATE_DS2:      return 4;
 865         case IPW_RATE_DS5:      return 11;
 866         case IPW_RATE_DS11:     return 22;
 867         }
 868         return 0;
 869 }
 870
 871 /*
 872  * The firmware automatically adapts the transmit speed. We report its current
 873  * value here.
 874  */
 875 static void
 876 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 877 {
 878         struct ieee80211vap *vap = ifp->if_softc;
 879         struct ieee80211com *ic = vap->iv_ic;
 880         struct ipw_softc *sc = ic->ic_ifp->if_softc;
 881
 882         /* read current transmission rate from adapter */
 883         vap->iv_bss->ni_txrate = ipw_cvtrate(
 884             ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf);
 885         ieee80211_media_status(ifp, imr);
 886 }
 887
 888 static int
 889 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 890 {
 891         struct ipw_vap *ivp = IPW_VAP(vap);
 892         struct ieee80211com *ic = vap->iv_ic;
 893         struct ifnet *ifp = ic->ic_ifp;
 894         struct ipw_softc *sc = ifp->if_softc;
 895
 896         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
 897                 ieee80211_state_name[vap->iv_state],
 898                 ieee80211_state_name[nstate], sc->flags));
 899
 900         switch (nstate) {
 901         case IEEE80211_S_RUN:
 902                 if (ic->ic_opmode == IEEE80211_M_IBSS) {
 903                         /*
 904                          * XXX when joining an ibss network we are called
 905                          * with a SCAN -> RUN transition on scan complete.
 906                          * Use that to call ipw_auth_and_assoc.  On completing
 907                          * the join we are then called again with an
 908                          * AUTH -> RUN transition and we want to do nothing.
 909                          * This is all totally bogus and needs to be redone.
 910                          */
 911                         if (vap->iv_state == IEEE80211_S_SCAN) {
 912                                 taskqueue_enqueue(taskqueue_swi,
 913                                     &IPW_VAP(vap)->assoc_task);
 914                                 return EINPROGRESS;
 915                         }
 916                 }
 917                 break;
 918
 919         case IEEE80211_S_INIT:
 920                 if (sc->flags & IPW_FLAG_ASSOCIATED)
 921                         taskqueue_enqueue(taskqueue_swi,
 922                             &IPW_VAP(vap)->disassoc_task);
 923                 break;
 924
 925         case IEEE80211_S_AUTH:
 926                 taskqueue_enqueue(taskqueue_swi, &IPW_VAP(vap)->assoc_task);
 927                 return EINPROGRESS;
 928
 929         case IEEE80211_S_ASSOC:
 930                 /*
 931                  * If we are not transitioning from AUTH the resend the
 932                  * association request.
 933                  */
 934                 if (vap->iv_state != IEEE80211_S_AUTH) {
 935                         taskqueue_enqueue(taskqueue_swi,
 936                             &IPW_VAP(vap)->assoc_task);
 937                         return EINPROGRESS;
 938                 }
 939                 break;
 940
 941         default:
 942                 break;
 943         }
 944         return ivp->newstate(vap, nstate, arg);
 945 }
 946
 947 /*
 948  * Read 16 bits at address 'addr' from the serial EEPROM.
 949  */
 950 static uint16_t
 951 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr)
 952 {
 953         uint32_t tmp;
 954         uint16_t val;
 955         int n;
 956
 957         /* clock C once before the first command */
 958         IPW_EEPROM_CTL(sc, 0);
 959         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 960         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 961         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 962
 963         /* write start bit (1) */
 964         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 965         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 966
 967         /* write READ opcode (10) */
 968         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 969         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 970         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 971         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 972
 973         /* write address A7-A0 */
 974         for (n = 7; n >= 0; n--) {
 975                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 976                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D));
 977                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 978                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C);
 979         }
 980
 981         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 982
 983         /* read data Q15-Q0 */
 984         val = 0;
 985         for (n = 15; n >= 0; n--) {
 986                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 987                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 988                 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL);
 989                 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n;
 990         }
 991
 992         IPW_EEPROM_CTL(sc, 0);
 993
 994         /* clear Chip Select and clock C */
 995         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 996         IPW_EEPROM_CTL(sc, 0);
 997         IPW_EEPROM_CTL(sc, IPW_EEPROM_C);
 998
 999         return le16toh(val);
1000 }
1001
1002 static void
1003 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
1004 {
1005         struct ipw_cmd *cmd;
1006
1007         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1008
1009         cmd = mtod(sbuf->m, struct ipw_cmd *);
1010
1011         DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n",
1012             ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type),
1013             le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len),
1014             le32toh(cmd->status)));
1015
1016         sc->flags &= ~IPW_FLAG_BUSY;
1017         wakeup(sc);
1018 }
1019
1020 static void
1021 ipw_assocsuccess(void *arg, int npending)
1022 {
1023         struct ieee80211vap *vap = arg;
1024
1025         ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
1026 }
1027
1028 static void
1029 ipw_assocfailed(void *arg, int npending)
1030 {
1031         struct ieee80211vap *vap = arg;
1032
1033         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1034 }
1035
1036 static void
1037 ipw_scandone(void *arg, int npending)
1038 {
1039         struct ieee80211vap *vap = arg;
1040
1041         ieee80211_scan_done(vap);
1042 }
1043
1044 static void
1045 ipw_bmiss(void *arg, int npending)
1046 {
1047         struct ieee80211com *ic = arg;
1048
1049         ieee80211_beacon_miss(ic);
1050 }
1051
1052 static void
1053 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
1054 {
1055 #define IEEESTATE(vap)  ieee80211_state_name[vap->iv_state]
1056         struct ifnet *ifp = sc->sc_ifp;
1057         struct ieee80211com *ic = ifp->if_l2com;
1058         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1059         uint32_t state;
1060
1061         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1062
1063         state = le32toh(*mtod(sbuf->m, uint32_t *));
1064
1065         switch (state) {
1066         case IPW_STATE_ASSOCIATED:
1067                 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n",
1068                         IEEESTATE(vap), sc->flags));
1069                 /* XXX suppress state change in case the fw auto-associates */
1070                 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) {
1071                         DPRINTF(("Unexpected association (%s, flags 0x%x)\n",
1072                                 IEEESTATE(vap), sc->flags));
1073                         break;
1074                 }
1075                 sc->flags &= ~IPW_FLAG_ASSOCIATING;
1076                 sc->flags |= IPW_FLAG_ASSOCIATED;
1077                 taskqueue_enqueue(taskqueue_swi,
1078                     &IPW_VAP(vap)->assoc_success_task);
1079                 break;
1080
1081         case IPW_STATE_SCANNING:
1082                 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n",
1083                         IEEESTATE(vap), sc->flags));
1084                 /*
1085                  * NB: Check driver state for association on assoc
1086                  * loss as the firmware will immediately start to
1087                  * scan and we would treat it as a beacon miss if
1088                  * we checked the 802.11 layer state.
1089                  */
1090                 if (sc->flags & IPW_FLAG_ASSOCIATED) {
1091                         /* XXX probably need to issue disassoc to fw */
1092                         taskqueue_enqueue(taskqueue_swi, &sc->sc_bmiss_task);
1093                 }
1094                 break;
1095
1096         case IPW_STATE_SCAN_COMPLETE:
1097                 /*
1098                  * XXX For some reason scan requests generate scan
1099                  * started + scan done events before any traffic is
1100                  * received (e.g. probe response frames).  We work
1101                  * around this by marking the HACK flag and skipping
1102                  * the first scan complete event.
1103                 */
1104                 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n",
1105                             IEEESTATE(vap), sc->flags));
1106                 if (sc->flags & IPW_FLAG_HACK) {
1107                         sc->flags &= ~IPW_FLAG_HACK;
1108                         break;
1109                 }
1110                 if (sc->flags & IPW_FLAG_SCANNING) {
1111                         taskqueue_enqueue(taskqueue_swi,
1112                             &IPW_VAP(vap)->scandone_task);
1113                         sc->flags &= ~IPW_FLAG_SCANNING;
1114                         sc->sc_scan_timer = 0;
1115                 }
1116                 break;
1117
1118         case IPW_STATE_ASSOCIATION_LOST:
1119                 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n",
1120                         IEEESTATE(vap), sc->flags));
1121                 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1122                 if (vap->iv_state == IEEE80211_S_RUN)
1123                         taskqueue_enqueue(taskqueue_swi,
1124                             &IPW_VAP(vap)->assoc_failed_task);
1125                 break;
1126
1127         case IPW_STATE_DISABLED:
1128                 /* XXX? is this right? */
1129                 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING |
1130                     IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1131                 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n",
1132                         IEEESTATE(vap), sc->flags));
1133                 break;
1134
1135         case IPW_STATE_RADIO_DISABLED:
1136                 device_printf(sc->sc_dev, "radio turned off\n");
1137                 ieee80211_notify_radio(ic, 0);
1138                 ipw_stop_locked(sc);
1139                 /* XXX start polling thread to detect radio on */
1140                 break;
1141
1142         default:
1143                 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n",
1144                         __func__, state, IEEESTATE(vap), sc->flags));
1145                 break;
1146         }
1147 #undef IEEESTATE
1148 }
1149
1150 /*
1151  * Set driver state for current channel.
1152  */
1153 static void
1154 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan)
1155 {
1156         struct ifnet *ifp = sc->sc_ifp;
1157         struct ieee80211com *ic = ifp->if_l2com;
1158
1159         ic->ic_curchan = chan;
1160         sc->sc_rxtap.wr_chan_freq = sc->sc_txtap.wt_chan_freq =
1161                 htole16(ic->ic_curchan->ic_freq);
1162         sc->sc_rxtap.wr_chan_flags = sc->sc_txtap.wt_chan_flags =
1163                 htole16(ic->ic_curchan->ic_flags);
1164 }
1165
1166 /*
1167  * XXX: Hack to set the current channel to the value advertised in beacons or
1168  * probe responses. Only used during AP detection.
1169  */
1170 static void
1171 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m)
1172 {
1173         struct ifnet *ifp = sc->sc_ifp;
1174         struct ieee80211com *ic = ifp->if_l2com;
1175         struct ieee80211_channel *c;
1176         struct ieee80211_frame *wh;
1177         uint8_t subtype;
1178         uint8_t *frm, *efrm;
1179
1180         wh = mtod(m, struct ieee80211_frame *);
1181
1182         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
1183                 return;
1184
1185         subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1186
1187         if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1188             subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1189                 return;
1190
1191         /* XXX use ieee80211_parse_beacon */
1192         frm = (uint8_t *)(wh + 1);
1193         efrm = mtod(m, uint8_t *) + m->m_len;
1194
1195         frm += 12;      /* skip tstamp, bintval and capinfo fields */
1196         while (frm < efrm) {
1197                 if (*frm == IEEE80211_ELEMID_DSPARMS)
1198 #if IEEE80211_CHAN_MAX < 255
1199                 if (frm[2] <= IEEE80211_CHAN_MAX)
1200 #endif
1201                 {
1202                         DPRINTF(("Fixing channel to %d\n", frm[2]));
1203                         c = ieee80211_find_channel(ic,
1204                                 ieee80211_ieee2mhz(frm[2], 0),
1205                                 IEEE80211_CHAN_B);
1206                         if (c == NULL)
1207                                 c = &ic->ic_channels[0];
1208                         ipw_setcurchan(sc, c);
1209                 }
1210
1211                 frm += frm[1] + 2;
1212         }
1213 }
1214
1215 static void
1216 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status,
1217     struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf)
1218 {
1219         struct ifnet *ifp = sc->sc_ifp;
1220         struct ieee80211com *ic = ifp->if_l2com;
1221         struct mbuf *mnew, *m;
1222         struct ieee80211_node *ni;
1223         bus_addr_t physaddr;
1224         int error;
1225         IPW_LOCK_DECL;
1226
1227         DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len),
1228             status->rssi));
1229
1230         if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) ||
1231             le32toh(status->len) > MCLBYTES)
1232                 return;
1233
1234         /*
1235          * Try to allocate a new mbuf for this ring element and load it before
1236          * processing the current mbuf. If the ring element cannot be loaded,
1237          * drop the received packet and reuse the old mbuf. In the unlikely
1238          * case that the old mbuf can't be reloaded either, explicitly panic.
1239          */
1240         mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1241         if (mnew == NULL) {
1242                 ifp->if_ierrors++;
1243                 return;
1244         }
1245
1246         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1247         bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
1248
1249         error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *),
1250             MCLBYTES, ipw_dma_map_addr, &physaddr, 0);
1251         if (error != 0) {
1252                 m_freem(mnew);
1253
1254                 /* try to reload the old mbuf */
1255                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
1256                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
1257                     &physaddr, 0);
1258                 if (error != 0) {
1259                         /* very unlikely that it will fail... */
1260                         panic("%s: could not load old rx mbuf",
1261                             device_get_name(sc->sc_dev));
1262                 }
1263                 ifp->if_ierrors++;
1264                 return;
1265         }
1266
1267         /*
1268          * New mbuf successfully loaded, update Rx ring and continue
1269          * processing.
1270          */
1271         m = sbuf->m;
1272         sbuf->m = mnew;
1273         sbd->bd->physaddr = htole32(physaddr);
1274
1275         /* finalize mbuf */
1276         m->m_pkthdr.rcvif = ifp;
1277         m->m_pkthdr.len = m->m_len = le32toh(status->len);
1278
1279         if (bpf_peers_present(ifp->if_bpf)) {
1280                 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap;
1281
1282                 tap->wr_flags = 0;
1283                 tap->wr_antsignal = status->rssi + IPW_RSSI_TO_DBM;
1284                 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
1285                 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
1286
1287                 bpf_mtap2(ifp->if_bpf, tap, sc->sc_rxtap_len, m);
1288         }
1289
1290         if (sc->flags & IPW_FLAG_SCANNING)
1291                 ipw_fix_channel(sc, m);
1292
1293         IPW_UNLOCK(sc);
1294         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1295         if (ni != NULL) {
1296                 (void) ieee80211_input(ni, m, status->rssi, -95, 0);
1297                 ieee80211_free_node(ni);
1298         } else
1299                 (void) ieee80211_input_all(ic, m, status->rssi, -95, 0);
1300         IPW_LOCK(sc);
1301
1302         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1303 }
1304
1305 static void
1306 ipw_rx_intr(struct ipw_softc *sc)
1307 {
1308         struct ipw_status *status;
1309         struct ipw_soft_bd *sbd;
1310         struct ipw_soft_buf *sbuf;
1311         uint32_t r, i;
1312
1313         if (!(sc->flags & IPW_FLAG_FW_INITED))
1314                 return;
1315
1316         r = CSR_READ_4(sc, IPW_CSR_RX_READ);
1317
1318         bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD);
1319
1320         for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) {
1321                 status = &sc->status_list[i];
1322                 sbd = &sc->srbd_list[i];
1323                 sbuf = sbd->priv;
1324
1325                 switch (le16toh(status->code) & 0xf) {
1326                 case IPW_STATUS_CODE_COMMAND:
1327                         ipw_rx_cmd_intr(sc, sbuf);
1328                         break;
1329
1330                 case IPW_STATUS_CODE_NEWSTATE:
1331                         ipw_rx_newstate_intr(sc, sbuf);
1332                         break;
1333
1334                 case IPW_STATUS_CODE_DATA_802_3:
1335                 case IPW_STATUS_CODE_DATA_802_11:
1336                         ipw_rx_data_intr(sc, status, sbd, sbuf);
1337                         break;
1338
1339                 case IPW_STATUS_CODE_NOTIFICATION:
1340                         DPRINTFN(2, ("notification status, len %u flags 0x%x\n",
1341                             le32toh(status->len), status->flags));
1342                         /* XXX maybe drive state machine AUTH->ASSOC? */
1343                         break;
1344
1345                 default:
1346                         device_printf(sc->sc_dev, "unexpected status code %u\n",
1347                             le16toh(status->code));
1348                 }
1349
1350                 /* firmware was killed, stop processing received frames */
1351                 if (!(sc->flags & IPW_FLAG_FW_INITED))
1352                         return;
1353
1354                 sbd->bd->flags = 0;
1355         }
1356
1357         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1358
1359         /* kick the firmware */
1360         sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1;
1361         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
1362 }
1363
1364 static void
1365 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd)
1366 {
1367         struct ipw_soft_hdr *shdr;
1368         struct ipw_soft_buf *sbuf;
1369
1370         switch (sbd->type) {
1371         case IPW_SBD_TYPE_COMMAND:
1372                 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map,
1373                     BUS_DMASYNC_POSTWRITE);
1374                 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map);
1375                 break;
1376
1377         case IPW_SBD_TYPE_HEADER:
1378                 shdr = sbd->priv;
1379                 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE);
1380                 bus_dmamap_unload(sc->hdr_dmat, shdr->map);
1381                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
1382                 break;
1383
1384         case IPW_SBD_TYPE_DATA:
1385                 sbuf = sbd->priv;
1386                 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map,
1387                     BUS_DMASYNC_POSTWRITE);
1388                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1389                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
1390
1391                 if (sbuf->m->m_flags & M_TXCB)
1392                         ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/);
1393                 m_freem(sbuf->m);
1394                 ieee80211_free_node(sbuf->ni);
1395
1396                 sc->sc_tx_timer = 0;
1397                 break;
1398         }
1399
1400         sbd->type = IPW_SBD_TYPE_NOASSOC;
1401 }
1402
1403 static void
1404 ipw_tx_intr(struct ipw_softc *sc)
1405 {
1406         struct ifnet *ifp = sc->sc_ifp;
1407         struct ipw_soft_bd *sbd;
1408         uint32_t r, i;
1409
1410         if (!(sc->flags & IPW_FLAG_FW_INITED))
1411                 return;
1412
1413         r = CSR_READ_4(sc, IPW_CSR_TX_READ);
1414
1415         for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) {
1416                 sbd = &sc->stbd_list[i];
1417
1418                 if (sbd->type == IPW_SBD_TYPE_DATA)
1419                         ifp->if_opackets++;
1420
1421                 ipw_release_sbd(sc, sbd);
1422                 sc->txfree++;
1423         }
1424
1425         /* remember what the firmware has processed */
1426         sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1;
1427
1428         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1429         ipw_start_locked(ifp);
1430 }
1431
1432 static void
1433 ipw_intr(void *arg)
1434 {
1435         struct ipw_softc *sc = arg;
1436         uint32_t r;
1437         IPW_LOCK_DECL;
1438
1439         IPW_LOCK(sc);
1440
1441         if ((r = CSR_READ_4(sc, IPW_CSR_INTR)) == 0 || r == 0xffffffff) {
1442                 IPW_UNLOCK(sc);
1443                 return;
1444         }
1445
1446         /* disable interrupts */
1447         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1448
1449         /* acknowledge all interrupts */
1450         CSR_WRITE_4(sc, IPW_CSR_INTR, r);
1451
1452         if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) {
1453                 device_printf(sc->sc_dev, "firmware error\n");
1454                 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1455                 r = 0;  /* don't process more interrupts */
1456         }
1457
1458         if (r & IPW_INTR_FW_INIT_DONE)
1459                 wakeup(sc);
1460
1461         if (r & IPW_INTR_RX_TRANSFER)
1462                 ipw_rx_intr(sc);
1463
1464         if (r & IPW_INTR_TX_TRANSFER)
1465                 ipw_tx_intr(sc);
1466
1467         /* re-enable interrupts */
1468         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1469
1470         IPW_UNLOCK(sc);
1471 }
1472
1473 static void
1474 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1475 {
1476         if (error != 0)
1477                 return;
1478
1479         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1480
1481         *(bus_addr_t *)arg = segs[0].ds_addr;
1482 }
1483
1484 static const char *
1485 ipw_cmdname(int cmd)
1486 {
1487 #define N(a)    (sizeof(a) / sizeof(a[0]))
1488         static const struct {
1489                 int     cmd;
1490                 const char *name;
1491         } cmds[] = {
1492                 { IPW_CMD_ADD_MULTICAST,        "ADD_MULTICAST" },
1493                 { IPW_CMD_BROADCAST_SCAN,       "BROADCAST_SCAN" },
1494                 { IPW_CMD_DISABLE,              "DISABLE" },
1495                 { IPW_CMD_DISABLE_PHY,          "DISABLE_PHY" },
1496                 { IPW_CMD_ENABLE,               "ENABLE" },
1497                 { IPW_CMD_PREPARE_POWER_DOWN,   "PREPARE_POWER_DOWN" },
1498                 { IPW_CMD_SET_BASIC_TX_RATES,   "SET_BASIC_TX_RATES" },
1499                 { IPW_CMD_SET_BEACON_INTERVAL,  "SET_BEACON_INTERVAL" },
1500                 { IPW_CMD_SET_CHANNEL,          "SET_CHANNEL" },
1501                 { IPW_CMD_SET_CONFIGURATION,    "SET_CONFIGURATION" },
1502                 { IPW_CMD_SET_DESIRED_BSSID,    "SET_DESIRED_BSSID" },
1503                 { IPW_CMD_SET_ESSID,            "SET_ESSID" },
1504                 { IPW_CMD_SET_FRAG_THRESHOLD,   "SET_FRAG_THRESHOLD" },
1505                 { IPW_CMD_SET_MAC_ADDRESS,      "SET_MAC_ADDRESS" },
1506                 { IPW_CMD_SET_MANDATORY_BSSID,  "SET_MANDATORY_BSSID" },
1507                 { IPW_CMD_SET_MODE,             "SET_MODE" },
1508                 { IPW_CMD_SET_MSDU_TX_RATES,    "SET_MSDU_TX_RATES" },
1509                 { IPW_CMD_SET_POWER_MODE,       "SET_POWER_MODE" },
1510                 { IPW_CMD_SET_RTS_THRESHOLD,    "SET_RTS_THRESHOLD" },
1511                 { IPW_CMD_SET_SCAN_OPTIONS,     "SET_SCAN_OPTIONS" },
1512                 { IPW_CMD_SET_SECURITY_INFO,    "SET_SECURITY_INFO" },
1513                 { IPW_CMD_SET_TX_POWER_INDEX,   "SET_TX_POWER_INDEX" },
1514                 { IPW_CMD_SET_TX_RATES,         "SET_TX_RATES" },
1515                 { IPW_CMD_SET_WEP_FLAGS,        "SET_WEP_FLAGS" },
1516                 { IPW_CMD_SET_WEP_KEY,          "SET_WEP_KEY" },
1517                 { IPW_CMD_SET_WEP_KEY_INDEX,    "SET_WEP_KEY_INDEX" },
1518                 { IPW_CMD_SET_WPA_IE,           "SET_WPA_IE" },
1519
1520         };
1521         static char buf[12];
1522         int i;
1523
1524         for (i = 0; i < N(cmds); i++)
1525                 if (cmds[i].cmd == cmd)
1526                         return cmds[i].name;
1527         snprintf(buf, sizeof(buf), "%u", cmd);
1528         return buf;
1529 #undef N
1530 }
1531
1532 /*
1533  * Send a command to the firmware and wait for the acknowledgement.
1534  */
1535 static int
1536 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len)
1537 {
1538         struct ipw_soft_bd *sbd;
1539         bus_addr_t physaddr;
1540         int error;
1541
1542         IPW_LOCK_ASSERT(sc);
1543
1544         if (sc->flags & IPW_FLAG_BUSY) {
1545                 device_printf(sc->sc_dev, "%s: %s not sent, busy\n",
1546                         __func__, ipw_cmdname(type));
1547                 return EAGAIN;
1548         }
1549         sc->flags |= IPW_FLAG_BUSY;
1550
1551         sbd = &sc->stbd_list[sc->txcur];
1552
1553         error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd,
1554             sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0);
1555         if (error != 0) {
1556                 device_printf(sc->sc_dev, "could not map command DMA memory\n");
1557                 sc->flags &= ~IPW_FLAG_BUSY;
1558                 return error;
1559         }
1560
1561         sc->cmd.type = htole32(type);
1562         sc->cmd.subtype = 0;
1563         sc->cmd.len = htole32(len);
1564         sc->cmd.seq = 0;
1565         memcpy(sc->cmd.data, data, len);
1566
1567         sbd->type = IPW_SBD_TYPE_COMMAND;
1568         sbd->bd->physaddr = htole32(physaddr);
1569         sbd->bd->len = htole32(sizeof (struct ipw_cmd));
1570         sbd->bd->nfrag = 1;
1571         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND |
1572             IPW_BD_FLAG_TX_LAST_FRAGMENT;
1573
1574         bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE);
1575         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1576
1577 #ifdef IPW_DEBUG
1578         if (ipw_debug >= 4) {
1579                 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type,
1580                     0, 0, len);
1581                 /* Print the data buffer in the higher debug level */
1582                 if (ipw_debug >= 9 && len > 0) {
1583                         printf(" data: 0x");
1584                         for (int i = 1; i <= len; i++)
1585                                 printf("%1D", (u_char *)data + len - i, "");
1586                 }
1587                 printf("\n");
1588         }
1589 #endif
1590
1591         /* kick firmware */
1592         sc->txfree--;
1593         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1594         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1595
1596         /* wait at most one second for command to complete */
1597         error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz);
1598         if (error != 0) {
1599                 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n",
1600                     __func__, ipw_cmdname(type), error);
1601                 sc->flags &= ~IPW_FLAG_BUSY;
1602                 return (error);
1603         }
1604         return (0);
1605 }
1606
1607 static int
1608 ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni)
1609 {
1610         struct ipw_softc *sc = ifp->if_softc;
1611         struct ieee80211com *ic = ifp->if_l2com;
1612         struct ieee80211_frame *wh;
1613         struct ipw_soft_bd *sbd;
1614         struct ipw_soft_hdr *shdr;
1615         struct ipw_soft_buf *sbuf;
1616         struct ieee80211_key *k;
1617         struct mbuf *mnew;
1618         bus_dma_segment_t segs[IPW_MAX_NSEG];
1619         bus_addr_t physaddr;
1620         int nsegs, error, i;
1621
1622         wh = mtod(m0, struct ieee80211_frame *);
1623
1624         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1625                 k = ieee80211_crypto_encap(ni, m0);
1626                 if (k == NULL) {
1627                         m_freem(m0);
1628                         return ENOBUFS;
1629                 }
1630                 /* packet header may have moved, reset our local pointer */
1631                 wh = mtod(m0, struct ieee80211_frame *);
1632         }
1633
1634         if (bpf_peers_present(ifp->if_bpf)) {
1635                 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap;
1636
1637                 tap->wt_flags = 0;
1638                 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1639                 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1640
1641                 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0);
1642         }
1643
1644         shdr = SLIST_FIRST(&sc->free_shdr);
1645         sbuf = SLIST_FIRST(&sc->free_sbuf);
1646         KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool"));
1647
1648         shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND);
1649         shdr->hdr.subtype = 0;
1650         shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_WEP) ? 1 : 0;
1651         shdr->hdr.encrypt = 0;
1652         shdr->hdr.keyidx = 0;
1653         shdr->hdr.keysz = 0;
1654         shdr->hdr.fragmentsz = 0;
1655         IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2);
1656         if (ic->ic_opmode == IEEE80211_M_STA)
1657                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3);
1658         else
1659                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1);
1660
1661         /* trim IEEE802.11 header */
1662         m_adj(m0, sizeof (struct ieee80211_frame));
1663
1664         error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs,
1665             &nsegs, 0);
1666         if (error != 0 && error != EFBIG) {
1667                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1668                     error);
1669                 m_freem(m0);
1670                 return error;
1671         }
1672         if (error != 0) {
1673                 mnew = m_defrag(m0, M_DONTWAIT);
1674                 if (mnew == NULL) {
1675                         device_printf(sc->sc_dev,
1676                             "could not defragment mbuf\n");
1677                         m_freem(m0);
1678                         return ENOBUFS;
1679                 }
1680                 m0 = mnew;
1681
1682                 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0,
1683                     segs, &nsegs, 0);
1684                 if (error != 0) {
1685                         device_printf(sc->sc_dev,
1686                             "could not map mbuf (error %d)\n", error);
1687                         m_freem(m0);
1688                         return error;
1689                 }
1690         }
1691
1692         error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr,
1693             sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0);
1694         if (error != 0) {
1695                 device_printf(sc->sc_dev, "could not map header DMA memory\n");
1696                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1697                 m_freem(m0);
1698                 return error;
1699         }
1700
1701         SLIST_REMOVE_HEAD(&sc->free_sbuf, next);
1702         SLIST_REMOVE_HEAD(&sc->free_shdr, next);
1703
1704         sbd = &sc->stbd_list[sc->txcur];
1705         sbd->type = IPW_SBD_TYPE_HEADER;
1706         sbd->priv = shdr;
1707         sbd->bd->physaddr = htole32(physaddr);
1708         sbd->bd->len = htole32(sizeof (struct ipw_hdr));
1709         sbd->bd->nfrag = 1 + nsegs;
1710         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 |
1711             IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1712
1713         DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n",
1714             shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted,
1715             shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr,
1716             ":"));
1717
1718         sc->txfree--;
1719         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1720
1721         sbuf->m = m0;
1722         sbuf->ni = ni;
1723
1724         for (i = 0; i < nsegs; i++) {
1725                 sbd = &sc->stbd_list[sc->txcur];
1726
1727                 sbd->bd->physaddr = htole32(segs[i].ds_addr);
1728                 sbd->bd->len = htole32(segs[i].ds_len);
1729                 sbd->bd->nfrag = 0;
1730                 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3;
1731                 if (i == nsegs - 1) {
1732                         sbd->type = IPW_SBD_TYPE_DATA;
1733                         sbd->priv = sbuf;
1734                         sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT;
1735                 } else {
1736                         sbd->type = IPW_SBD_TYPE_NOASSOC;
1737                         sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1738                 }
1739
1740                 DPRINTFN(5, ("sending fragment (%d)\n", i));
1741
1742                 sc->txfree--;
1743                 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1744         }
1745
1746         bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE);
1747         bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE);
1748         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1749
1750         /* kick firmware */
1751         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1752
1753         return 0;
1754 }
1755
1756 static int
1757 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1758         const struct ieee80211_bpf_params *params)
1759 {
1760         /* no support; just discard */
1761         m_freem(m);
1762         ieee80211_free_node(ni);
1763         return 0;
1764 }
1765
1766 static void
1767 ipw_start(struct ifnet *ifp)
1768 {
1769         struct ipw_softc *sc = ifp->if_softc;
1770         IPW_LOCK_DECL;
1771
1772         IPW_LOCK(sc);
1773         ipw_start_locked(ifp);
1774         IPW_UNLOCK(sc);
1775 }
1776
1777 static void
1778 ipw_start_locked(struct ifnet *ifp)
1779 {
1780         struct ipw_softc *sc = ifp->if_softc;
1781         struct ieee80211_node *ni;
1782         struct mbuf *m;
1783
1784         IPW_LOCK_ASSERT(sc);
1785
1786         for (;;) {
1787                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1788                 if (m == NULL)
1789                         break;
1790                 if (sc->txfree < 1 + IPW_MAX_NSEG) {
1791                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
1792                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1793                         break;
1794                 }
1795                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1796                 m = ieee80211_encap(ni, m);
1797                 if (m == NULL) {
1798                         ieee80211_free_node(ni);
1799                         continue;
1800                 }
1801                 if (ipw_tx_start(ifp, m, ni) != 0) {
1802                         ieee80211_free_node(ni);
1803                         ifp->if_oerrors++;
1804                         break;
1805                 }
1806                 /* start watchdog timer */
1807                 sc->sc_tx_timer = 5;
1808         }
1809 }
1810
1811 static void
1812 ipw_watchdog(void *arg)
1813 {
1814         struct ipw_softc *sc = arg;
1815         struct ifnet *ifp = sc->sc_ifp;
1816         struct ieee80211com *ic = ifp->if_l2com;
1817
1818         IPW_LOCK_ASSERT(sc);
1819
1820         if (sc->sc_tx_timer > 0) {
1821                 if (--sc->sc_tx_timer == 0) {
1822                         if_printf(ifp, "device timeout\n");
1823                         ifp->if_oerrors++;
1824                         taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1825                 }
1826         }
1827         if (sc->sc_scan_timer > 0) {
1828                 if (--sc->sc_scan_timer == 0) {
1829                         DPRINTFN(3, ("Scan timeout\n"));
1830                         /* End the scan */
1831                         if (sc->flags & IPW_FLAG_SCANNING) {
1832                                 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps));
1833                                 sc->flags &= ~IPW_FLAG_SCANNING;
1834                         }
1835                 }
1836         }
1837         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1838                 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
1839 }
1840
1841 static int
1842 ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1843 {
1844         struct ipw_softc *sc = ifp->if_softc;
1845         struct ieee80211com *ic = ifp->if_l2com;
1846         struct ifreq *ifr = (struct ifreq *) data;
1847         int error = 0, startall = 0;
1848         IPW_LOCK_DECL;
1849
1850         IPW_LOCK(sc);
1851         switch (cmd) {
1852         case SIOCSIFFLAGS:
1853                 if (ifp->if_flags & IFF_UP) {
1854                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1855                                 ipw_init_locked(sc);
1856                                 startall = 1;
1857                         }
1858                 } else {
1859                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1860                                 ipw_stop_locked(sc);
1861                 }
1862                 break;
1863         case SIOCGIFMEDIA:
1864         case SIOCSIFMEDIA:
1865                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1866                 break;
1867         default:
1868                 error = ether_ioctl(ifp, cmd, data);
1869         }
1870         IPW_UNLOCK(sc);
1871
1872         if (startall)
1873                 ieee80211_start_all(ic);
1874         return error;
1875 }
1876
1877 static void
1878 ipw_stop_master(struct ipw_softc *sc)
1879 {
1880         uint32_t tmp;
1881         int ntries;
1882
1883         /* disable interrupts */
1884         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1885
1886         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER);
1887         for (ntries = 0; ntries < 50; ntries++) {
1888                 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED)
1889                         break;
1890                 DELAY(10);
1891         }
1892         if (ntries == 50)
1893                 device_printf(sc->sc_dev, "timeout waiting for master\n");
1894
1895         tmp = CSR_READ_4(sc, IPW_CSR_RST);
1896         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET);
1897
1898         /* Clear all flags except the following */
1899         sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH;
1900 }
1901
1902 static int
1903 ipw_reset(struct ipw_softc *sc)
1904 {
1905         uint32_t tmp;
1906         int ntries;
1907
1908         ipw_stop_master(sc);
1909
1910         /* move adapter to D0 state */
1911         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1912         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1913
1914         /* wait for clock stabilization */
1915         for (ntries = 0; ntries < 1000; ntries++) {
1916                 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY)
1917                         break;
1918                 DELAY(200);
1919         }
1920         if (ntries == 1000)
1921                 return EIO;
1922
1923         tmp =  CSR_READ_4(sc, IPW_CSR_RST);
1924         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET);
1925
1926         DELAY(10);
1927
1928         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1929         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1930
1931         return 0;
1932 }
1933
1934 static int
1935 ipw_waitfordisable(struct ipw_softc *sc, int waitfor)
1936 {
1937         int ms = hz < 1000 ? 1 : hz/10;
1938         int i, error;
1939
1940         for (i = 0; i < 100; i++) {
1941                 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor)
1942                         return 0;
1943                 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms);
1944                 if (error == 0 || error != EWOULDBLOCK)
1945                         return 0;
1946         }
1947         DPRINTF(("%s: timeout waiting for %s\n",
1948                 __func__, waitfor ? "disable" : "enable"));
1949         return ETIMEDOUT;
1950 }
1951
1952 static int
1953 ipw_enable(struct ipw_softc *sc)
1954 {
1955         int error;
1956
1957         if ((sc->flags & IPW_FLAG_ENABLED) == 0) {
1958                 DPRINTF(("Enable adapter\n"));
1959                 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
1960                 if (error != 0)
1961                         return error;
1962                 error = ipw_waitfordisable(sc, 0);
1963                 if (error != 0)
1964                         return error;
1965                 sc->flags |= IPW_FLAG_ENABLED;
1966         }
1967         return 0;
1968 }
1969
1970 static int
1971 ipw_disable(struct ipw_softc *sc)
1972 {
1973         int error;
1974
1975         if (sc->flags & IPW_FLAG_ENABLED) {
1976                 DPRINTF(("Disable adapter\n"));
1977                 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0);
1978                 if (error != 0)
1979                         return error;
1980                 error = ipw_waitfordisable(sc, 1);
1981                 if (error != 0)
1982                         return error;
1983                 sc->flags &= ~IPW_FLAG_ENABLED;
1984         }
1985         return 0;
1986 }
1987
1988 /*
1989  * Upload the microcode to the device.
1990  */
1991 static int
1992 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size)
1993 {
1994         int ntries;
1995
1996         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
1997         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1998
1999         MEM_WRITE_2(sc, 0x220000, 0x0703);
2000         MEM_WRITE_2(sc, 0x220000, 0x0707);
2001
2002         MEM_WRITE_1(sc, 0x210014, 0x72);
2003         MEM_WRITE_1(sc, 0x210014, 0x72);
2004
2005         MEM_WRITE_1(sc, 0x210000, 0x40);
2006         MEM_WRITE_1(sc, 0x210000, 0x00);
2007         MEM_WRITE_1(sc, 0x210000, 0x40);
2008
2009         MEM_WRITE_MULTI_1(sc, 0x210010, uc, size);
2010
2011         MEM_WRITE_1(sc, 0x210000, 0x00);
2012         MEM_WRITE_1(sc, 0x210000, 0x00);
2013         MEM_WRITE_1(sc, 0x210000, 0x80);
2014
2015         MEM_WRITE_2(sc, 0x220000, 0x0703);
2016         MEM_WRITE_2(sc, 0x220000, 0x0707);
2017
2018         MEM_WRITE_1(sc, 0x210014, 0x72);
2019         MEM_WRITE_1(sc, 0x210014, 0x72);
2020
2021         MEM_WRITE_1(sc, 0x210000, 0x00);
2022         MEM_WRITE_1(sc, 0x210000, 0x80);
2023
2024         for (ntries = 0; ntries < 10; ntries++) {
2025                 if (MEM_READ_1(sc, 0x210000) & 1)
2026                         break;
2027                 DELAY(10);
2028         }
2029         if (ntries == 10) {
2030                 device_printf(sc->sc_dev,
2031                     "timeout waiting for ucode to initialize\n");
2032                 return EIO;
2033         }
2034
2035         MEM_WRITE_4(sc, 0x3000e0, 0);
2036
2037         return 0;
2038 }
2039
2040 /* set of macros to handle unaligned little endian data in firmware image */
2041 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2042 #define GETLE16(p) ((p)[0] | (p)[1] << 8)
2043 static int
2044 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size)
2045 {
2046         const uint8_t *p, *end;
2047         uint32_t tmp, dst;
2048         uint16_t len;
2049         int error;
2050
2051         p = fw;
2052         end = fw + size;
2053         while (p < end) {
2054                 dst = GETLE32(p); p += 4;
2055                 len = GETLE16(p); p += 2;
2056
2057                 ipw_write_mem_1(sc, dst, p, len);
2058                 p += len;
2059         }
2060
2061         CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK |
2062             IPW_IO_LED_OFF);
2063
2064         /* enable interrupts */
2065         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
2066
2067         /* kick the firmware */
2068         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
2069
2070         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
2071         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY);
2072
2073         /* wait at most one second for firmware initialization to complete */
2074         if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) {
2075                 device_printf(sc->sc_dev, "timeout waiting for firmware "
2076                     "initialization to complete\n");
2077                 return error;
2078         }
2079
2080         tmp = CSR_READ_4(sc, IPW_CSR_IO);
2081         CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK |
2082             IPW_IO_GPIO3_MASK);
2083
2084         return 0;
2085 }
2086
2087 static int
2088 ipw_setwepkeys(struct ipw_softc *sc)
2089 {
2090         struct ifnet *ifp = sc->sc_ifp;
2091         struct ieee80211com *ic = ifp->if_l2com;
2092         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2093         struct ipw_wep_key wepkey;
2094         struct ieee80211_key *wk;
2095         int error, i;
2096
2097         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2098                 wk = &vap->iv_nw_keys[i];
2099
2100                 if (wk->wk_cipher == NULL ||
2101                     wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP)
2102                         continue;
2103
2104                 wepkey.idx = i;
2105                 wepkey.len = wk->wk_keylen;
2106                 memset(wepkey.key, 0, sizeof wepkey.key);
2107                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2108                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2109                     wepkey.len));
2110                 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey,
2111                     sizeof wepkey);
2112                 if (error != 0)
2113                         return error;
2114         }
2115         return 0;
2116 }
2117
2118 static int
2119 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen)
2120 {
2121         struct ipw_wpa_ie wpaie;
2122
2123         memset(&wpaie, 0, sizeof(wpaie));
2124         wpaie.len = htole32(ielen);
2125         /* XXX verify length */
2126         memcpy(&wpaie.ie, ie, ielen);
2127         DPRINTF(("Setting WPA IE\n"));
2128         return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie));
2129 }
2130
2131 static int
2132 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid)
2133 {
2134         static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
2135
2136         if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) {
2137                 DPRINTF(("Setting mandatory BSSID to null\n"));
2138                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0);
2139         } else {
2140                 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":"));
2141                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID,
2142                         bssid, IEEE80211_ADDR_LEN);
2143         }
2144 }
2145
2146 static int
2147 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen)
2148 {
2149         if (ssidlen == 0) {
2150                 /*
2151                  * A bug in the firmware breaks the ``don't associate''
2152                  * bit in the scan options command.  To compensate for
2153                  * this install a bogus ssid when no ssid is specified
2154                  * so the firmware won't try to associate.
2155                  */
2156                 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n"));
2157                 return ipw_cmd(sc, IPW_CMD_SET_ESSID,
2158                         "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27"
2159                         "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31"
2160                         "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b"
2161                         "\x3c\x3d", IEEE80211_NWID_LEN);
2162         } else {
2163 #ifdef IPW_DEBUG
2164                 if (ipw_debug > 0) {
2165                         printf("Setting ESSID to ");
2166                         ieee80211_print_essid(ssid, ssidlen);
2167                         printf("\n");
2168                 }
2169 #endif
2170                 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen);
2171         }
2172 }
2173
2174 static int
2175 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags)
2176 {
2177         struct ipw_scan_options opts;
2178
2179         DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags));
2180         opts.channels = htole32(chanmask);
2181         opts.flags = htole32(flags);
2182         return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts));
2183 }
2184
2185 /*
2186  * Handler for sc_scan_task.  This is a simple wrapper around ipw_scan().
2187  */
2188 static void
2189 ipw_scan_task(void *context, int pending)
2190 {
2191         struct ipw_softc *sc = context;
2192         IPW_LOCK_DECL;
2193
2194         IPW_LOCK(sc);
2195         ipw_scan(sc);
2196         IPW_UNLOCK(sc);
2197 }
2198
2199 static int
2200 ipw_scan(struct ipw_softc *sc)
2201 {
2202         uint32_t params;
2203         int error;
2204
2205         DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags));
2206
2207         if (sc->flags & IPW_FLAG_SCANNING)
2208                 return (EBUSY);
2209         sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK;
2210
2211         /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */
2212         error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE);
2213         if (error != 0)
2214                 goto done;
2215
2216         /*
2217          * Setup null/bogus ssid so firmware doesn't use any previous
2218          * ssid to try and associate.  This is because the ``don't
2219          * associate'' option bit is broken (sigh).
2220          */
2221         error = ipw_setssid(sc, NULL, 0);
2222         if (error != 0)
2223                 goto done;
2224
2225         /*
2226          * NB: the adapter may be disabled on association lost;
2227          *     if so just re-enable it to kick off scanning.
2228          */
2229         DPRINTF(("Starting scan\n"));
2230         sc->sc_scan_timer = 3;
2231         if (sc->flags & IPW_FLAG_ENABLED) {
2232                 params = 0;                             /* XXX? */
2233                 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN,
2234                                 &params, sizeof(params));
2235         } else
2236                 error = ipw_enable(sc);
2237 done:
2238         if (error != 0) {
2239                 DPRINTF(("Scan failed\n"));
2240                 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK);
2241         }
2242         return (error);
2243 }
2244
2245 static int
2246 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan)
2247 {
2248         struct ifnet *ifp = sc->sc_ifp;
2249         struct ieee80211com *ic = ifp->if_l2com;
2250         uint32_t data;
2251         int error;
2252
2253         data = htole32(ieee80211_chan2ieee(ic, chan));
2254         DPRINTF(("Setting channel to %u\n", le32toh(data)));
2255         error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data);
2256         if (error == 0)
2257                 ipw_setcurchan(sc, chan);
2258         return error;
2259 }
2260
2261 static void
2262 ipw_assoc_task(void *context, int pending)
2263 {
2264         struct ieee80211vap *vap = context;
2265         struct ifnet *ifp = vap->iv_ic->ic_ifp;
2266         struct ieee80211com *ic = ifp->if_l2com;
2267         struct ipw_softc *sc = ifp->if_softc;
2268         struct ieee80211_node *ni = vap->iv_bss;
2269         struct ipw_security security;
2270         uint32_t data;
2271         int error;
2272         IPW_LOCK_DECL;
2273
2274         IPW_LOCK(sc);
2275         error = ipw_disable(sc);
2276         if (error != 0)
2277                 goto done;
2278
2279         memset(&security, 0, sizeof security);
2280         security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ?
2281             IPW_AUTH_SHARED : IPW_AUTH_OPEN;
2282         security.ciphers = htole32(IPW_CIPHER_NONE);
2283         DPRINTF(("Setting authmode to %u\n", security.authmode));
2284         error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security,
2285             sizeof security);
2286         if (error != 0)
2287                 goto done;
2288
2289         data = htole32(vap->iv_rtsthreshold);
2290         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2291         error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2292         if (error != 0)
2293                 goto done;
2294
2295         data = htole32(vap->iv_fragthreshold);
2296         DPRINTF(("Setting frag threshold to %u\n", le32toh(data)));
2297         error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2298         if (error != 0)
2299                 goto done;
2300
2301         if (vap->iv_flags & IEEE80211_F_PRIVACY) {
2302                 error = ipw_setwepkeys(sc);
2303                 if (error != 0)
2304                         goto done;
2305
2306                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) {
2307                         data = htole32(vap->iv_def_txkey);
2308                         DPRINTF(("Setting wep tx key index to %u\n",
2309                                 le32toh(data)));
2310                         error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data,
2311                             sizeof data);
2312                         if (error != 0)
2313                                 goto done;
2314                 }
2315         }
2316
2317         data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0);
2318         DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data)));
2319         error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data);
2320         if (error != 0)
2321                 goto done;
2322
2323         error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen);
2324         if (error != 0)
2325                 goto done;
2326
2327         error = ipw_setbssid(sc, ni->ni_bssid);
2328         if (error != 0)
2329                 goto done;
2330
2331         if (vap->iv_appie_assocreq != NULL) {
2332                 struct ieee80211_appie *ie = vap->iv_appie_assocreq;
2333                 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len);
2334                 if (error != 0)
2335                         goto done;
2336         }
2337         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2338                 error = ipw_setchannel(sc, ni->ni_chan);
2339                 if (error != 0)
2340                         goto done;
2341         }
2342
2343         /* lock scan to ap's channel and enable associate */
2344         error = ipw_setscanopts(sc,
2345             1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0);
2346         if (error != 0)
2347                 goto done;
2348
2349         error = ipw_enable(sc);         /* finally, enable adapter */
2350         if (error == 0)
2351                 sc->flags |= IPW_FLAG_ASSOCIATING;
2352 done:
2353         IPW_UNLOCK(sc);
2354 }
2355
2356 static void
2357 ipw_disassoc_task(void *context, int pending)
2358 {
2359         struct ieee80211vap *vap = context;
2360         struct ifnet *ifp = vap->iv_ic->ic_ifp;
2361         struct ieee80211_node *ni = vap->iv_bss;
2362         struct ipw_softc *sc = ifp->if_softc;
2363         IPW_LOCK_DECL;
2364
2365         IPW_LOCK(sc);
2366         DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":"));
2367         /*
2368          * NB: don't try to do this if ipw_stop_master has
2369          *     shutdown the firmware and disabled interrupts.
2370          */
2371         if (sc->flags & IPW_FLAG_FW_INITED) {
2372                 sc->flags &= ~IPW_FLAG_ASSOCIATED;
2373                 /*
2374                  * NB: firmware currently ignores bssid parameter, but
2375                  *     supply it in case this changes (follow linux driver).
2376                  */
2377                 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE,
2378                         ni->ni_bssid, IEEE80211_ADDR_LEN);
2379         }
2380         IPW_UNLOCK(sc);
2381 }
2382
2383 /*
2384  * Handler for sc_init_task.  This is a simple wrapper around ipw_init().
2385  * It is called on firmware panics or on watchdog timeouts.
2386  */
2387 static void
2388 ipw_init_task(void *context, int pending)
2389 {
2390         ipw_init(context);
2391 }
2392
2393 static void
2394 ipw_init(void *priv)
2395 {
2396         struct ipw_softc *sc = priv;
2397         struct ifnet *ifp = sc->sc_ifp;
2398         struct ieee80211com *ic = ifp->if_l2com;
2399         IPW_LOCK_DECL;
2400
2401         IPW_LOCK(sc);
2402         ipw_init_locked(sc);
2403         IPW_UNLOCK(sc);
2404
2405         ieee80211_start_all(ic);
2406 }
2407
2408 static void
2409 ipw_init_locked(struct ipw_softc *sc)
2410 {
2411         struct ifnet *ifp = sc->sc_ifp;
2412         struct ieee80211com *ic = ifp->if_l2com;
2413         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2414         const struct firmware *fp;
2415         const struct ipw_firmware_hdr *hdr;
2416         const char *fw;
2417
2418         IPW_LOCK_ASSERT(sc);
2419
2420         DPRINTF(("%s: state %s flags 0x%x\n", __func__,
2421                 ieee80211_state_name[vap->iv_state], sc->flags));
2422
2423         /*
2424          * Avoid re-entrant calls.  We need to release the mutex in ipw_init()
2425          * when loading the firmware and we don't want to be called during this
2426          * operation.
2427          */
2428         if (sc->flags & IPW_FLAG_INIT_LOCKED)
2429                 return;
2430         sc->flags |= IPW_FLAG_INIT_LOCKED;
2431
2432         ipw_stop_locked(sc);
2433
2434         if (ipw_reset(sc) != 0) {
2435                 device_printf(sc->sc_dev, "could not reset adapter\n");
2436                 goto fail;
2437         }
2438
2439         if (sc->sc_firmware == NULL) {
2440                 device_printf(sc->sc_dev, "no firmware\n");
2441                 goto fail;
2442         }
2443         /* NB: consistency already checked on load */
2444         fp = sc->sc_firmware;
2445         hdr = (const struct ipw_firmware_hdr *)fp->data;
2446
2447         DPRINTF(("Loading firmware image '%s'\n", fp->name));
2448         fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz);
2449         if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) {
2450                 device_printf(sc->sc_dev, "could not load microcode\n");
2451                 goto fail;
2452         }
2453
2454         ipw_stop_master(sc);
2455
2456         /*
2457          * Setup tx, rx and status rings.
2458          */
2459         sc->txold = IPW_NTBD - 1;
2460         sc->txcur = 0;
2461         sc->txfree = IPW_NTBD - 2;
2462         sc->rxcur = IPW_NRBD - 1;
2463
2464         CSR_WRITE_4(sc, IPW_CSR_TX_BASE,  sc->tbd_phys);
2465         CSR_WRITE_4(sc, IPW_CSR_TX_SIZE,  IPW_NTBD);
2466         CSR_WRITE_4(sc, IPW_CSR_TX_READ,  0);
2467         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
2468
2469         CSR_WRITE_4(sc, IPW_CSR_RX_BASE,  sc->rbd_phys);
2470         CSR_WRITE_4(sc, IPW_CSR_RX_SIZE,  IPW_NRBD);
2471         CSR_WRITE_4(sc, IPW_CSR_RX_READ,  0);
2472         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
2473
2474         CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys);
2475
2476         fw = (const char *)fp->data + sizeof *hdr;
2477         if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) {
2478                 device_printf(sc->sc_dev, "could not load firmware\n");
2479                 goto fail;
2480         }
2481
2482         sc->flags |= IPW_FLAG_FW_INITED;
2483
2484         /* retrieve information tables base addresses */
2485         sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE);
2486         sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE);
2487
2488         ipw_write_table1(sc, IPW_INFO_LOCK, 0);
2489
2490         if (ipw_config(sc) != 0) {
2491                 device_printf(sc->sc_dev, "device configuration failed\n");
2492                 goto fail;
2493         }
2494
2495         callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
2496         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2497         ifp->if_drv_flags |= IFF_DRV_RUNNING;
2498
2499         sc->flags &=~ IPW_FLAG_INIT_LOCKED;
2500         return;
2501
2502 fail:
2503         ipw_stop_locked(sc);
2504         sc->flags &=~ IPW_FLAG_INIT_LOCKED;
2505 }
2506
2507 static int
2508 ipw_config(struct ipw_softc *sc)
2509 {
2510         struct ifnet *ifp = sc->sc_ifp;
2511         struct ieee80211com *ic = ifp->if_l2com;
2512         struct ipw_configuration config;
2513         uint32_t data;
2514         int error;
2515
2516         error = ipw_disable(sc);
2517         if (error != 0)
2518                 return error;
2519
2520         switch (ic->ic_opmode) {
2521         case IEEE80211_M_STA:
2522         case IEEE80211_M_HOSTAP:
2523         case IEEE80211_M_WDS:           /* XXX */
2524                 data = htole32(IPW_MODE_BSS);
2525                 break;
2526         case IEEE80211_M_IBSS:
2527         case IEEE80211_M_AHDEMO:
2528                 data = htole32(IPW_MODE_IBSS);
2529                 break;
2530         case IEEE80211_M_MONITOR:
2531                 data = htole32(IPW_MODE_MONITOR);
2532                 break;
2533         }
2534         DPRINTF(("Setting mode to %u\n", le32toh(data)));
2535         error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data);
2536         if (error != 0)
2537                 return error;
2538
2539         if (ic->ic_opmode == IEEE80211_M_IBSS ||
2540             ic->ic_opmode == IEEE80211_M_MONITOR) {
2541                 error = ipw_setchannel(sc, ic->ic_curchan);
2542                 if (error != 0)
2543                         return error;
2544         }
2545
2546         if (ic->ic_opmode == IEEE80211_M_MONITOR)
2547                 return ipw_enable(sc);
2548
2549         config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK |
2550             IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE);
2551         if (ic->ic_opmode == IEEE80211_M_IBSS)
2552                 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START);
2553         if (ifp->if_flags & IFF_PROMISC)
2554                 config.flags |= htole32(IPW_CFG_PROMISCUOUS);
2555         config.bss_chan = htole32(0x3fff); /* channels 1-14 */
2556         config.ibss_chan = htole32(0x7ff); /* channels 1-11 */
2557         DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags)));
2558         error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config);
2559         if (error != 0)
2560                 return error;
2561
2562         data = htole32(0x3); /* 1, 2 */
2563         DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data)));
2564         error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data);
2565         if (error != 0)
2566                 return error;
2567
2568         /* NB: use the same rate set */
2569         DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data)));
2570         error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data);
2571         if (error != 0)
2572                 return error;
2573
2574         data = htole32(0xf); /* 1, 2, 5.5, 11 */
2575         DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data)));
2576         error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data);
2577         if (error != 0)
2578                 return error;
2579
2580         data = htole32(IPW_POWER_MODE_CAM);
2581         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2582         error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data);
2583         if (error != 0)
2584                 return error;
2585
2586         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2587                 data = htole32(32); /* default value */
2588                 DPRINTF(("Setting tx power index to %u\n", le32toh(data)));
2589                 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data,
2590                     sizeof data);
2591                 if (error != 0)
2592                         return error;
2593         }
2594
2595         return 0;
2596 }
2597
2598 static void
2599 ipw_stop(void *priv)
2600 {
2601         struct ipw_softc *sc = priv;
2602         IPW_LOCK_DECL;
2603
2604         IPW_LOCK(sc);
2605         ipw_stop_locked(sc);
2606         IPW_UNLOCK(sc);
2607 }
2608
2609 static void
2610 ipw_stop_locked(struct ipw_softc *sc)
2611 {
2612         struct ifnet *ifp = sc->sc_ifp;
2613         int i;
2614
2615         IPW_LOCK_ASSERT(sc);
2616
2617         callout_stop(&sc->sc_wdtimer);
2618         ipw_stop_master(sc);
2619
2620         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET);
2621
2622         /*
2623          * Release tx buffers.
2624          */
2625         for (i = 0; i < IPW_NTBD; i++)
2626                 ipw_release_sbd(sc, &sc->stbd_list[i]);
2627
2628         sc->sc_tx_timer = 0;
2629         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2630 }
2631
2632 static int
2633 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)
2634 {
2635         struct ipw_softc *sc = arg1;
2636         uint32_t i, size, buf[256];
2637
2638         memset(buf, 0, sizeof buf);
2639
2640         if (!(sc->flags & IPW_FLAG_FW_INITED))
2641                 return SYSCTL_OUT(req, buf, sizeof buf);
2642
2643         CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base);
2644
2645         size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256);
2646         for (i = 1; i < size; i++)
2647                 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA));
2648
2649         return SYSCTL_OUT(req, buf, size);
2650 }
2651
2652 static int
2653 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)
2654 {
2655         struct ipw_softc *sc = arg1;
2656         int val;
2657
2658         val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) &&
2659                 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED));
2660
2661         return SYSCTL_OUT(req, &val, sizeof val);
2662 }
2663
2664 static uint32_t
2665 ipw_read_table1(struct ipw_softc *sc, uint32_t off)
2666 {
2667         return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off));
2668 }
2669
2670 static void
2671 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info)
2672 {
2673         MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info);
2674 }
2675
2676 #if 0
2677 static int
2678 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len)
2679 {
2680         uint32_t addr, info;
2681         uint16_t count, size;
2682         uint32_t total;
2683
2684         /* addr[4] + count[2] + size[2] */
2685         addr = MEM_READ_4(sc, sc->table2_base + off);
2686         info = MEM_READ_4(sc, sc->table2_base + off + 4);
2687
2688         count = info >> 16;
2689         size = info & 0xffff;
2690         total = count * size;
2691
2692         if (total > *len) {
2693                 *len = total;
2694                 return EINVAL;
2695         }
2696
2697         *len = total;
2698         ipw_read_mem_1(sc, addr, buf, total);
2699
2700         return 0;
2701 }
2702
2703 static void
2704 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2705     bus_size_t count)
2706 {
2707         for (; count > 0; offset++, datap++, count--) {
2708                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2709                 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3));
2710         }
2711 }
2712 #endif
2713
2714 static void
2715 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap,
2716     bus_size_t count)
2717 {
2718         for (; count > 0; offset++, datap++, count--) {
2719                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2720                 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap);
2721         }
2722 }
2723
2724 static void
2725 ipw_scan_start(struct ieee80211com *ic)
2726 {
2727         struct ifnet *ifp = ic->ic_ifp;
2728         struct ipw_softc *sc = ifp->if_softc;
2729         IPW_LOCK_DECL;
2730
2731         IPW_LOCK(sc);
2732         if (!(sc->flags & IPW_FLAG_SCANNING))
2733                 taskqueue_enqueue(taskqueue_swi, &sc->sc_scan_task);
2734         IPW_UNLOCK(sc);
2735 }
2736
2737 static void
2738 ipw_set_channel(struct ieee80211com *ic)
2739 {
2740         struct ifnet *ifp = ic->ic_ifp;
2741         struct ipw_softc *sc = ifp->if_softc;
2742         IPW_LOCK_DECL;
2743
2744         IPW_LOCK(sc);
2745         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2746                 ipw_disable(sc);
2747                 ipw_setchannel(sc, ic->ic_curchan);
2748                 ipw_enable(sc);
2749         }
2750         IPW_UNLOCK(sc);
2751 }
2752
2753 static void
2754 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
2755 {
2756         /* NB: all channels are scanned at once */
2757 }
2758
2759 static void
2760 ipw_scan_mindwell(struct ieee80211_scan_state *ss)
2761 {
2762         /* NB: don't try to abort scan; wait for firmware to finish */
2763 }
2764
2765 static void
2766 ipw_scan_end(struct ieee80211com *ic)
2767 {
2768         struct ifnet *ifp = ic->ic_ifp;
2769         struct ipw_softc *sc = ifp->if_softc;
2770         IPW_LOCK_DECL;
2771
2772         IPW_LOCK(sc);
2773         sc->flags &= ~IPW_FLAG_SCANNING;
2774         IPW_UNLOCK(sc);
2775 }