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 =
 309                   IEEE80211_C_STA               /* station mode supported */
 310                 | IEEE80211_C_IBSS              /* IBSS mode supported */
 311                 | IEEE80211_C_MONITOR           /* monitor mode supported */
 312                 | IEEE80211_C_PMGT              /* power save supported */
 313                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 314                 | IEEE80211_C_WPA               /* 802.11i supported */
 315                 ;
 316
 317         /* read MAC address from EEPROM */
 318         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0);
 319         ic->ic_myaddr[0] = val >> 8;
 320         ic->ic_myaddr[1] = val & 0xff;
 321         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1);
 322         ic->ic_myaddr[2] = val >> 8;
 323         ic->ic_myaddr[3] = val & 0xff;
 324         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2);
 325         ic->ic_myaddr[4] = val >> 8;
 326         ic->ic_myaddr[5] = val & 0xff;
 327
 328         /* set supported .11b channels (read from EEPROM) */
 329         if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0)
 330                 val = 0x7ff; /* default to channels 1-11 */
 331         val <<= 1;
 332         for (i = 1; i < 16; i++) {
 333                 if (val & (1 << i)) {
 334                         c = &ic->ic_channels[ic->ic_nchans++];
 335                         c->ic_freq = ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 336                         c->ic_flags = IEEE80211_CHAN_B;
 337                         c->ic_ieee = i;
 338                 }
 339         }
 340
 341         /* check support for radio transmitter switch in EEPROM */
 342         if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8))
 343                 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH;
 344
 345         ieee80211_ifattach(ic);
 346         ic->ic_scan_start = ipw_scan_start;
 347         ic->ic_scan_end = ipw_scan_end;
 348         ic->ic_set_channel = ipw_set_channel;
 349         ic->ic_scan_curchan = ipw_scan_curchan;
 350         ic->ic_scan_mindwell = ipw_scan_mindwell;
 351         ic->ic_raw_xmit = ipw_raw_xmit;
 352
 353         ic->ic_vap_create = ipw_vap_create;
 354         ic->ic_vap_delete = ipw_vap_delete;
 355
 356         bpfattach(ifp, DLT_IEEE802_11_RADIO,
 357             sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap));
 358
 359         sc->sc_rxtap_len = sizeof sc->sc_rxtap;
 360         sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
 361         sc->sc_rxtap.wr_ihdr.it_present = htole32(IPW_RX_RADIOTAP_PRESENT);
 362
 363         sc->sc_txtap_len = sizeof sc->sc_txtap;
 364         sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
 365         sc->sc_txtap.wt_ihdr.it_present = htole32(IPW_TX_RADIOTAP_PRESENT);
 366
 367         /*
 368          * Add a few sysctl knobs.
 369          */
 370         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 371             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio",
 372             CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I",
 373             "radio transmitter switch state (0=off, 1=on)");
 374
 375         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 376             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
 377             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S",
 378             "statistics");
 379
 380         /*
 381          * Hook our interrupt after all initialization is complete.
 382          */
 383         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 384             NULL, ipw_intr, sc, &sc->sc_ih);
 385         if (error != 0) {
 386                 device_printf(dev, "could not set up interrupt\n");
 387                 goto fail4;
 388         }
 389
 390         if (bootverbose)
 391                 ieee80211_announce(ic);
 392
 393         return 0;
 394 fail4:
 395         if_free(ifp);
 396 fail3:
 397         ipw_release(sc);
 398 fail2:
 399         bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
 400 fail1:
 401         bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
 402 fail:
 403         mtx_destroy(&sc->sc_mtx);
 404         return ENXIO;
 405 }
 406
 407 static int
 408 ipw_detach(device_t dev)
 409 {
 410         struct ipw_softc *sc = device_get_softc(dev);
 411         struct ifnet *ifp = sc->sc_ifp;
 412         struct ieee80211com *ic = ifp->if_l2com;
 413
 414         ipw_stop(sc);
 415
 416         bpfdetach(ifp);
 417         ieee80211_ifdetach(ic);
 418
 419         callout_drain(&sc->sc_wdtimer);
 420         taskqueue_drain(taskqueue_fast, &sc->sc_init_task);
 421         taskqueue_drain(taskqueue_fast, &sc->sc_scan_task);
 422         taskqueue_drain(taskqueue_fast, &sc->sc_bmiss_task);
 423
 424         ipw_release(sc);
 425
 426         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 427         bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
 428
 429         bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
 430
 431         if_free(ifp);
 432
 433         if (sc->sc_firmware != NULL) {
 434                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 435                 sc->sc_firmware = NULL;
 436         }
 437
 438         mtx_destroy(&sc->sc_mtx);
 439
 440         return 0;
 441 }
 442
 443 static struct ieee80211vap *
 444 ipw_vap_create(struct ieee80211com *ic,
 445         const char name[IFNAMSIZ], int unit, int opmode, int flags,
 446         const uint8_t bssid[IEEE80211_ADDR_LEN],
 447         const uint8_t mac[IEEE80211_ADDR_LEN])
 448 {
 449         struct ifnet *ifp = ic->ic_ifp;
 450         struct ipw_softc *sc = ifp->if_softc;
 451         struct ipw_vap *ivp;
 452         struct ieee80211vap *vap;
 453         const struct firmware *fp;
 454         const struct ipw_firmware_hdr *hdr;
 455         const char *imagename;
 456
 457         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 458                 return NULL;
 459
 460         switch (opmode) {
 461         case IEEE80211_M_STA:
 462                 imagename = "ipw_bss";
 463                 break;
 464         case IEEE80211_M_IBSS:
 465                 imagename = "ipw_ibss";
 466                 break;
 467         case IEEE80211_M_MONITOR:
 468                 imagename = "ipw_monitor";
 469                 break;
 470         default:
 471                 return NULL;
 472         }
 473
 474         /*
 475          * Load firmware image using the firmware(9) subsystem.  Doing
 476          * this unlocked is ok since we're single-threaded by the
 477          * 802.11 layer.
 478          */
 479         if (sc->sc_firmware == NULL ||
 480             strcmp(sc->sc_firmware->name, imagename) != 0) {
 481                 if (sc->sc_firmware != NULL)
 482                         firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 483                 sc->sc_firmware = firmware_get(imagename);
 484         }
 485         if (sc->sc_firmware == NULL) {
 486                 device_printf(sc->sc_dev,
 487                     "could not load firmware image '%s'\n", imagename);
 488                 return NULL;
 489         }
 490         fp = sc->sc_firmware;
 491         if (fp->datasize < sizeof *hdr) {
 492                 device_printf(sc->sc_dev,
 493                     "firmware image too short %zu\n", fp->datasize);
 494                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 495                 sc->sc_firmware = NULL;
 496                 return NULL;
 497         }
 498         hdr = (const struct ipw_firmware_hdr *)fp->data;
 499         if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) +
 500             le32toh(hdr->ucodesz)) {
 501                 device_printf(sc->sc_dev,
 502                     "firmware image too short %zu\n", fp->datasize);
 503                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 504                 sc->sc_firmware = NULL;
 505                 return NULL;
 506         }
 507
 508         ivp = (struct ipw_vap *) malloc(sizeof(struct ipw_vap),
 509             M_80211_VAP, M_NOWAIT | M_ZERO);
 510         if (ivp == NULL)
 511                 return NULL;
 512         vap = &ivp->vap;
 513
 514         TASK_INIT(&ivp->assoc_task, 0, ipw_assoc_task, vap);
 515         TASK_INIT(&ivp->disassoc_task, 0, ipw_disassoc_task, vap);
 516         TASK_INIT(&ivp->assoc_success_task, 0, ipw_assocsuccess, vap);
 517         TASK_INIT(&ivp->assoc_failed_task, 0, ipw_assocfailed, vap);
 518         TASK_INIT(&ivp->scandone_task, 0, ipw_scandone, vap);
 519
 520         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
 521         /* override with driver methods */
 522         ivp->newstate = vap->iv_newstate;
 523         vap->iv_newstate = ipw_newstate;
 524
 525         /* complete setup */
 526         ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status);
 527         ic->ic_opmode = opmode;
 528         return vap;
 529 }
 530
 531 static void
 532 ipw_vap_delete(struct ieee80211vap *vap)
 533 {
 534         struct ipw_vap *ivp = IPW_VAP(vap);
 535
 536         ieee80211_vap_detach(vap);
 537         free(ivp, M_80211_VAP);
 538 }
 539
 540 static int
 541 ipw_dma_alloc(struct ipw_softc *sc)
 542 {
 543         struct ipw_soft_bd *sbd;
 544         struct ipw_soft_hdr *shdr;
 545         struct ipw_soft_buf *sbuf;
 546         bus_addr_t physaddr;
 547         int error, i;
 548
 549         /*
 550          * Allocate and map tx ring.
 551          */
 552         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 553             BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL,
 554             NULL, &sc->tbd_dmat);
 555         if (error != 0) {
 556                 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
 557                 goto fail;
 558         }
 559
 560         error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list,
 561             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map);
 562         if (error != 0) {
 563                 device_printf(sc->sc_dev,
 564                     "could not allocate tx ring DMA memory\n");
 565                 goto fail;
 566         }
 567
 568         error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list,
 569             IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0);
 570         if (error != 0) {
 571                 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n");
 572                 goto fail;
 573         }
 574
 575         /*
 576          * Allocate and map rx ring.
 577          */
 578         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 579             BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL,
 580             NULL, &sc->rbd_dmat);
 581         if (error != 0) {
 582                 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n");
 583                 goto fail;
 584         }
 585
 586         error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list,
 587             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map);
 588         if (error != 0) {
 589                 device_printf(sc->sc_dev,
 590                     "could not allocate rx ring DMA memory\n");
 591                 goto fail;
 592         }
 593
 594         error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list,
 595             IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0);
 596         if (error != 0) {
 597                 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n");
 598                 goto fail;
 599         }
 600
 601         /*
 602          * Allocate and map status ring.
 603          */
 604         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 605             BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0,
 606             NULL, NULL, &sc->status_dmat);
 607         if (error != 0) {
 608                 device_printf(sc->sc_dev,
 609                     "could not create status ring DMA tag\n");
 610                 goto fail;
 611         }
 612
 613         error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list,
 614             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map);
 615         if (error != 0) {
 616                 device_printf(sc->sc_dev,
 617                     "could not allocate status ring DMA memory\n");
 618                 goto fail;
 619         }
 620
 621         error = bus_dmamap_load(sc->status_dmat, sc->status_map,
 622             sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys,
 623             0);
 624         if (error != 0) {
 625                 device_printf(sc->sc_dev,
 626                     "could not map status ring DMA memory\n");
 627                 goto fail;
 628         }
 629
 630         /*
 631          * Allocate command DMA map.
 632          */
 633         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 634             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1,
 635             sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat);
 636         if (error != 0) {
 637                 device_printf(sc->sc_dev, "could not create command DMA tag\n");
 638                 goto fail;
 639         }
 640
 641         error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map);
 642         if (error != 0) {
 643                 device_printf(sc->sc_dev,
 644                     "could not create command DMA map\n");
 645                 goto fail;
 646         }
 647
 648         /*
 649          * Allocate headers DMA maps.
 650          */
 651         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 652             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1,
 653             sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat);
 654         if (error != 0) {
 655                 device_printf(sc->sc_dev, "could not create header DMA tag\n");
 656                 goto fail;
 657         }
 658
 659         SLIST_INIT(&sc->free_shdr);
 660         for (i = 0; i < IPW_NDATA; i++) {
 661                 shdr = &sc->shdr_list[i];
 662                 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map);
 663                 if (error != 0) {
 664                         device_printf(sc->sc_dev,
 665                             "could not create header DMA map\n");
 666                         goto fail;
 667                 }
 668                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
 669         }
 670
 671         /*
 672          * Allocate tx buffers DMA maps.
 673          */
 674         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 675             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0,
 676             NULL, NULL, &sc->txbuf_dmat);
 677         if (error != 0) {
 678                 device_printf(sc->sc_dev, "could not create tx DMA tag\n");
 679                 goto fail;
 680         }
 681
 682         SLIST_INIT(&sc->free_sbuf);
 683         for (i = 0; i < IPW_NDATA; i++) {
 684                 sbuf = &sc->tx_sbuf_list[i];
 685                 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map);
 686                 if (error != 0) {
 687                         device_printf(sc->sc_dev,
 688                             "could not create tx DMA map\n");
 689                         goto fail;
 690                 }
 691                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
 692         }
 693
 694         /*
 695          * Initialize tx ring.
 696          */
 697         for (i = 0; i < IPW_NTBD; i++) {
 698                 sbd = &sc->stbd_list[i];
 699                 sbd->bd = &sc->tbd_list[i];
 700                 sbd->type = IPW_SBD_TYPE_NOASSOC;
 701         }
 702
 703         /*
 704          * Pre-allocate rx buffers and DMA maps.
 705          */
 706         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 707             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
 708             NULL, &sc->rxbuf_dmat);
 709         if (error != 0) {
 710                 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
 711                 goto fail;
 712         }
 713
 714         for (i = 0; i < IPW_NRBD; i++) {
 715                 sbd = &sc->srbd_list[i];
 716                 sbuf = &sc->rx_sbuf_list[i];
 717                 sbd->bd = &sc->rbd_list[i];
 718
 719                 sbuf->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
 720                 if (sbuf->m == NULL) {
 721                         device_printf(sc->sc_dev,
 722                             "could not allocate rx mbuf\n");
 723                         error = ENOMEM;
 724                         goto fail;
 725                 }
 726
 727                 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map);
 728                 if (error != 0) {
 729                         device_printf(sc->sc_dev,
 730                             "could not create rx DMA map\n");
 731                         goto fail;
 732                 }
 733
 734                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
 735                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
 736                     &physaddr, 0);
 737                 if (error != 0) {
 738                         device_printf(sc->sc_dev,
 739                             "could not map rx DMA memory\n");
 740                         goto fail;
 741                 }
 742
 743                 sbd->type = IPW_SBD_TYPE_DATA;
 744                 sbd->priv = sbuf;
 745                 sbd->bd->physaddr = htole32(physaddr);
 746                 sbd->bd->len = htole32(MCLBYTES);
 747         }
 748
 749         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
 750
 751         return 0;
 752
 753 fail:   ipw_release(sc);
 754         return error;
 755 }
 756
 757 static void
 758 ipw_release(struct ipw_softc *sc)
 759 {
 760         struct ipw_soft_buf *sbuf;
 761         int i;
 762
 763         if (sc->tbd_dmat != NULL) {
 764                 if (sc->stbd_list != NULL) {
 765                         bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map);
 766                         bus_dmamem_free(sc->tbd_dmat, sc->tbd_list,
 767                             sc->tbd_map);
 768                 }
 769                 bus_dma_tag_destroy(sc->tbd_dmat);
 770         }
 771
 772         if (sc->rbd_dmat != NULL) {
 773                 if (sc->rbd_list != NULL) {
 774                         bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map);
 775                         bus_dmamem_free(sc->rbd_dmat, sc->rbd_list,
 776                             sc->rbd_map);
 777                 }
 778                 bus_dma_tag_destroy(sc->rbd_dmat);
 779         }
 780
 781         if (sc->status_dmat != NULL) {
 782                 if (sc->status_list != NULL) {
 783                         bus_dmamap_unload(sc->status_dmat, sc->status_map);
 784                         bus_dmamem_free(sc->status_dmat, sc->status_list,
 785                             sc->status_map);
 786                 }
 787                 bus_dma_tag_destroy(sc->status_dmat);
 788         }
 789
 790         for (i = 0; i < IPW_NTBD; i++)
 791                 ipw_release_sbd(sc, &sc->stbd_list[i]);
 792
 793         if (sc->cmd_dmat != NULL) {
 794                 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map);
 795                 bus_dma_tag_destroy(sc->cmd_dmat);
 796         }
 797
 798         if (sc->hdr_dmat != NULL) {
 799                 for (i = 0; i < IPW_NDATA; i++)
 800                         bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map);
 801                 bus_dma_tag_destroy(sc->hdr_dmat);
 802         }
 803
 804         if (sc->txbuf_dmat != NULL) {
 805                 for (i = 0; i < IPW_NDATA; i++) {
 806                         bus_dmamap_destroy(sc->txbuf_dmat,
 807                             sc->tx_sbuf_list[i].map);
 808                 }
 809                 bus_dma_tag_destroy(sc->txbuf_dmat);
 810         }
 811
 812         if (sc->rxbuf_dmat != NULL) {
 813                 for (i = 0; i < IPW_NRBD; i++) {
 814                         sbuf = &sc->rx_sbuf_list[i];
 815                         if (sbuf->m != NULL) {
 816                                 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map,
 817                                     BUS_DMASYNC_POSTREAD);
 818                                 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
 819                                 m_freem(sbuf->m);
 820                         }
 821                         bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map);
 822                 }
 823                 bus_dma_tag_destroy(sc->rxbuf_dmat);
 824         }
 825 }
 826
 827 static int
 828 ipw_shutdown(device_t dev)
 829 {
 830         struct ipw_softc *sc = device_get_softc(dev);
 831
 832         ipw_stop(sc);
 833
 834         return 0;
 835 }
 836
 837 static int
 838 ipw_suspend(device_t dev)
 839 {
 840         struct ipw_softc *sc = device_get_softc(dev);
 841
 842         ipw_stop(sc);
 843
 844         return 0;
 845 }
 846
 847 static int
 848 ipw_resume(device_t dev)
 849 {
 850         struct ipw_softc *sc = device_get_softc(dev);
 851         struct ifnet *ifp = sc->sc_ifp;
 852
 853         pci_write_config(dev, 0x41, 0, 1);
 854
 855         if (ifp->if_flags & IFF_UP)
 856                 ipw_init(sc);
 857
 858         return 0;
 859 }
 860
 861 static int
 862 ipw_cvtrate(int ipwrate)
 863 {
 864         switch (ipwrate) {
 865         case IPW_RATE_DS1:      return 2;
 866         case IPW_RATE_DS2:      return 4;
 867         case IPW_RATE_DS5:      return 11;
 868         case IPW_RATE_DS11:     return 22;
 869         }
 870         return 0;
 871 }
 872
 873 /*
 874  * The firmware automatically adapts the transmit speed. We report its current
 875  * value here.
 876  */
 877 static void
 878 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 879 {
 880         struct ieee80211vap *vap = ifp->if_softc;
 881         struct ieee80211com *ic = vap->iv_ic;
 882         struct ipw_softc *sc = ic->ic_ifp->if_softc;
 883
 884         /* read current transmission rate from adapter */
 885         vap->iv_bss->ni_txrate = ipw_cvtrate(
 886             ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf);
 887         ieee80211_media_status(ifp, imr);
 888 }
 889
 890 static int
 891 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 892 {
 893         struct ipw_vap *ivp = IPW_VAP(vap);
 894         struct ieee80211com *ic = vap->iv_ic;
 895         struct ifnet *ifp = ic->ic_ifp;
 896         struct ipw_softc *sc = ifp->if_softc;
 897
 898         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
 899                 ieee80211_state_name[vap->iv_state],
 900                 ieee80211_state_name[nstate], sc->flags));
 901
 902         switch (nstate) {
 903         case IEEE80211_S_RUN:
 904                 if (ic->ic_opmode == IEEE80211_M_IBSS) {
 905                         /*
 906                          * XXX when joining an ibss network we are called
 907                          * with a SCAN -> RUN transition on scan complete.
 908                          * Use that to call ipw_auth_and_assoc.  On completing
 909                          * the join we are then called again with an
 910                          * AUTH -> RUN transition and we want to do nothing.
 911                          * This is all totally bogus and needs to be redone.
 912                          */
 913                         if (vap->iv_state == IEEE80211_S_SCAN) {
 914                                 taskqueue_enqueue(taskqueue_swi,
 915                                     &IPW_VAP(vap)->assoc_task);
 916                                 return EINPROGRESS;
 917                         }
 918                 }
 919                 break;
 920
 921         case IEEE80211_S_INIT:
 922                 if (sc->flags & IPW_FLAG_ASSOCIATED)
 923                         taskqueue_enqueue(taskqueue_swi,
 924                             &IPW_VAP(vap)->disassoc_task);
 925                 break;
 926
 927         case IEEE80211_S_AUTH:
 928                 taskqueue_enqueue(taskqueue_swi, &IPW_VAP(vap)->assoc_task);
 929                 return EINPROGRESS;
 930
 931         case IEEE80211_S_ASSOC:
 932                 /*
 933                  * If we are not transitioning from AUTH the resend the
 934                  * association request.
 935                  */
 936                 if (vap->iv_state != IEEE80211_S_AUTH) {
 937                         taskqueue_enqueue(taskqueue_swi,
 938                             &IPW_VAP(vap)->assoc_task);
 939                         return EINPROGRESS;
 940                 }
 941                 break;
 942
 943         default:
 944                 break;
 945         }
 946         return ivp->newstate(vap, nstate, arg);
 947 }
 948
 949 /*
 950  * Read 16 bits at address 'addr' from the serial EEPROM.
 951  */
 952 static uint16_t
 953 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr)
 954 {
 955         uint32_t tmp;
 956         uint16_t val;
 957         int n;
 958
 959         /* clock C once before the first command */
 960         IPW_EEPROM_CTL(sc, 0);
 961         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 962         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 963         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 964
 965         /* write start bit (1) */
 966         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 967         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 968
 969         /* write READ opcode (10) */
 970         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 971         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 972         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 973         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 974
 975         /* write address A7-A0 */
 976         for (n = 7; n >= 0; n--) {
 977                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 978                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D));
 979                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 980                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C);
 981         }
 982
 983         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 984
 985         /* read data Q15-Q0 */
 986         val = 0;
 987         for (n = 15; n >= 0; n--) {
 988                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 989                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 990                 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL);
 991                 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n;
 992         }
 993
 994         IPW_EEPROM_CTL(sc, 0);
 995
 996         /* clear Chip Select and clock C */
 997         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 998         IPW_EEPROM_CTL(sc, 0);
 999         IPW_EEPROM_CTL(sc, IPW_EEPROM_C);
1000
1001         return le16toh(val);
1002 }
1003
1004 static void
1005 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
1006 {
1007         struct ipw_cmd *cmd;
1008
1009         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1010
1011         cmd = mtod(sbuf->m, struct ipw_cmd *);
1012
1013         DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n",
1014             ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type),
1015             le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len),
1016             le32toh(cmd->status)));
1017
1018         sc->flags &= ~IPW_FLAG_BUSY;
1019         wakeup(sc);
1020 }
1021
1022 static void
1023 ipw_assocsuccess(void *arg, int npending)
1024 {
1025         struct ieee80211vap *vap = arg;
1026
1027         ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
1028 }
1029
1030 static void
1031 ipw_assocfailed(void *arg, int npending)
1032 {
1033         struct ieee80211vap *vap = arg;
1034
1035         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1036 }
1037
1038 static void
1039 ipw_scandone(void *arg, int npending)
1040 {
1041         struct ieee80211vap *vap = arg;
1042
1043         ieee80211_scan_done(vap);
1044 }
1045
1046 static void
1047 ipw_bmiss(void *arg, int npending)
1048 {
1049         struct ieee80211com *ic = arg;
1050
1051         ieee80211_beacon_miss(ic);
1052 }
1053
1054 static void
1055 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
1056 {
1057 #define IEEESTATE(vap)  ieee80211_state_name[vap->iv_state]
1058         struct ifnet *ifp = sc->sc_ifp;
1059         struct ieee80211com *ic = ifp->if_l2com;
1060         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1061         uint32_t state;
1062
1063         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1064
1065         state = le32toh(*mtod(sbuf->m, uint32_t *));
1066
1067         switch (state) {
1068         case IPW_STATE_ASSOCIATED:
1069                 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n",
1070                         IEEESTATE(vap), sc->flags));
1071                 /* XXX suppress state change in case the fw auto-associates */
1072                 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) {
1073                         DPRINTF(("Unexpected association (%s, flags 0x%x)\n",
1074                                 IEEESTATE(vap), sc->flags));
1075                         break;
1076                 }
1077                 sc->flags &= ~IPW_FLAG_ASSOCIATING;
1078                 sc->flags |= IPW_FLAG_ASSOCIATED;
1079                 taskqueue_enqueue(taskqueue_swi,
1080                     &IPW_VAP(vap)->assoc_success_task);
1081                 break;
1082
1083         case IPW_STATE_SCANNING:
1084                 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n",
1085                         IEEESTATE(vap), sc->flags));
1086                 /*
1087                  * NB: Check driver state for association on assoc
1088                  * loss as the firmware will immediately start to
1089                  * scan and we would treat it as a beacon miss if
1090                  * we checked the 802.11 layer state.
1091                  */
1092                 if (sc->flags & IPW_FLAG_ASSOCIATED) {
1093                         /* XXX probably need to issue disassoc to fw */
1094                         taskqueue_enqueue(taskqueue_swi, &sc->sc_bmiss_task);
1095                 }
1096                 break;
1097
1098         case IPW_STATE_SCAN_COMPLETE:
1099                 /*
1100                  * XXX For some reason scan requests generate scan
1101                  * started + scan done events before any traffic is
1102                  * received (e.g. probe response frames).  We work
1103                  * around this by marking the HACK flag and skipping
1104                  * the first scan complete event.
1105                 */
1106                 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n",
1107                             IEEESTATE(vap), sc->flags));
1108                 if (sc->flags & IPW_FLAG_HACK) {
1109                         sc->flags &= ~IPW_FLAG_HACK;
1110                         break;
1111                 }
1112                 if (sc->flags & IPW_FLAG_SCANNING) {
1113                         taskqueue_enqueue(taskqueue_swi,
1114                             &IPW_VAP(vap)->scandone_task);
1115                         sc->flags &= ~IPW_FLAG_SCANNING;
1116                         sc->sc_scan_timer = 0;
1117                 }
1118                 break;
1119
1120         case IPW_STATE_ASSOCIATION_LOST:
1121                 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n",
1122                         IEEESTATE(vap), sc->flags));
1123                 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1124                 if (vap->iv_state == IEEE80211_S_RUN)
1125                         taskqueue_enqueue(taskqueue_swi,
1126                             &IPW_VAP(vap)->assoc_failed_task);
1127                 break;
1128
1129         case IPW_STATE_DISABLED:
1130                 /* XXX? is this right? */
1131                 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING |
1132                     IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1133                 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n",
1134                         IEEESTATE(vap), sc->flags));
1135                 break;
1136
1137         case IPW_STATE_RADIO_DISABLED:
1138                 device_printf(sc->sc_dev, "radio turned off\n");
1139                 ieee80211_notify_radio(ic, 0);
1140                 ipw_stop_locked(sc);
1141                 /* XXX start polling thread to detect radio on */
1142                 break;
1143
1144         default:
1145                 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n",
1146                         __func__, state, IEEESTATE(vap), sc->flags));
1147                 break;
1148         }
1149 #undef IEEESTATE
1150 }
1151
1152 /*
1153  * Set driver state for current channel.
1154  */
1155 static void
1156 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan)
1157 {
1158         struct ifnet *ifp = sc->sc_ifp;
1159         struct ieee80211com *ic = ifp->if_l2com;
1160
1161         ic->ic_curchan = chan;
1162         sc->sc_rxtap.wr_chan_freq = sc->sc_txtap.wt_chan_freq =
1163                 htole16(ic->ic_curchan->ic_freq);
1164         sc->sc_rxtap.wr_chan_flags = sc->sc_txtap.wt_chan_flags =
1165                 htole16(ic->ic_curchan->ic_flags);
1166 }
1167
1168 /*
1169  * XXX: Hack to set the current channel to the value advertised in beacons or
1170  * probe responses. Only used during AP detection.
1171  */
1172 static void
1173 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m)
1174 {
1175         struct ifnet *ifp = sc->sc_ifp;
1176         struct ieee80211com *ic = ifp->if_l2com;
1177         struct ieee80211_channel *c;
1178         struct ieee80211_frame *wh;
1179         uint8_t subtype;
1180         uint8_t *frm, *efrm;
1181
1182         wh = mtod(m, struct ieee80211_frame *);
1183
1184         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
1185                 return;
1186
1187         subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1188
1189         if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1190             subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1191                 return;
1192
1193         /* XXX use ieee80211_parse_beacon */
1194         frm = (uint8_t *)(wh + 1);
1195         efrm = mtod(m, uint8_t *) + m->m_len;
1196
1197         frm += 12;      /* skip tstamp, bintval and capinfo fields */
1198         while (frm < efrm) {
1199                 if (*frm == IEEE80211_ELEMID_DSPARMS)
1200 #if IEEE80211_CHAN_MAX < 255
1201                 if (frm[2] <= IEEE80211_CHAN_MAX)
1202 #endif
1203                 {
1204                         DPRINTF(("Fixing channel to %d\n", frm[2]));
1205                         c = ieee80211_find_channel(ic,
1206                                 ieee80211_ieee2mhz(frm[2], 0),
1207                                 IEEE80211_CHAN_B);
1208                         if (c == NULL)
1209                                 c = &ic->ic_channels[0];
1210                         ipw_setcurchan(sc, c);
1211                 }
1212
1213                 frm += frm[1] + 2;
1214         }
1215 }
1216
1217 static void
1218 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status,
1219     struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf)
1220 {
1221         struct ifnet *ifp = sc->sc_ifp;
1222         struct ieee80211com *ic = ifp->if_l2com;
1223         struct mbuf *mnew, *m;
1224         struct ieee80211_node *ni;
1225         bus_addr_t physaddr;
1226         int error;
1227         IPW_LOCK_DECL;
1228
1229         DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len),
1230             status->rssi));
1231
1232         if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) ||
1233             le32toh(status->len) > MCLBYTES)
1234                 return;
1235
1236         /*
1237          * Try to allocate a new mbuf for this ring element and load it before
1238          * processing the current mbuf. If the ring element cannot be loaded,
1239          * drop the received packet and reuse the old mbuf. In the unlikely
1240          * case that the old mbuf can't be reloaded either, explicitly panic.
1241          */
1242         mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1243         if (mnew == NULL) {
1244                 ifp->if_ierrors++;
1245                 return;
1246         }
1247
1248         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1249         bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
1250
1251         error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *),
1252             MCLBYTES, ipw_dma_map_addr, &physaddr, 0);
1253         if (error != 0) {
1254                 m_freem(mnew);
1255
1256                 /* try to reload the old mbuf */
1257                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
1258                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
1259                     &physaddr, 0);
1260                 if (error != 0) {
1261                         /* very unlikely that it will fail... */
1262                         panic("%s: could not load old rx mbuf",
1263                             device_get_name(sc->sc_dev));
1264                 }
1265                 ifp->if_ierrors++;
1266                 return;
1267         }
1268
1269         /*
1270          * New mbuf successfully loaded, update Rx ring and continue
1271          * processing.
1272          */
1273         m = sbuf->m;
1274         sbuf->m = mnew;
1275         sbd->bd->physaddr = htole32(physaddr);
1276
1277         /* finalize mbuf */
1278         m->m_pkthdr.rcvif = ifp;
1279         m->m_pkthdr.len = m->m_len = le32toh(status->len);
1280
1281         if (bpf_peers_present(ifp->if_bpf)) {
1282                 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap;
1283
1284                 tap->wr_flags = 0;
1285                 tap->wr_antsignal = status->rssi + IPW_RSSI_TO_DBM;
1286                 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
1287                 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
1288
1289                 bpf_mtap2(ifp->if_bpf, tap, sc->sc_rxtap_len, m);
1290         }
1291
1292         if (sc->flags & IPW_FLAG_SCANNING)
1293                 ipw_fix_channel(sc, m);
1294
1295         IPW_UNLOCK(sc);
1296         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1297         if (ni != NULL) {
1298                 (void) ieee80211_input(ni, m, status->rssi, -95, 0);
1299                 ieee80211_free_node(ni);
1300         } else
1301                 (void) ieee80211_input_all(ic, m, status->rssi, -95, 0);
1302         IPW_LOCK(sc);
1303
1304         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1305 }
1306
1307 static void
1308 ipw_rx_intr(struct ipw_softc *sc)
1309 {
1310         struct ipw_status *status;
1311         struct ipw_soft_bd *sbd;
1312         struct ipw_soft_buf *sbuf;
1313         uint32_t r, i;
1314
1315         if (!(sc->flags & IPW_FLAG_FW_INITED))
1316                 return;
1317
1318         r = CSR_READ_4(sc, IPW_CSR_RX_READ);
1319
1320         bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD);
1321
1322         for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) {
1323                 status = &sc->status_list[i];
1324                 sbd = &sc->srbd_list[i];
1325                 sbuf = sbd->priv;
1326
1327                 switch (le16toh(status->code) & 0xf) {
1328                 case IPW_STATUS_CODE_COMMAND:
1329                         ipw_rx_cmd_intr(sc, sbuf);
1330                         break;
1331
1332                 case IPW_STATUS_CODE_NEWSTATE:
1333                         ipw_rx_newstate_intr(sc, sbuf);
1334                         break;
1335
1336                 case IPW_STATUS_CODE_DATA_802_3:
1337                 case IPW_STATUS_CODE_DATA_802_11:
1338                         ipw_rx_data_intr(sc, status, sbd, sbuf);
1339                         break;
1340
1341                 case IPW_STATUS_CODE_NOTIFICATION:
1342                         DPRINTFN(2, ("notification status, len %u flags 0x%x\n",
1343                             le32toh(status->len), status->flags));
1344                         /* XXX maybe drive state machine AUTH->ASSOC? */
1345                         break;
1346
1347                 default:
1348                         device_printf(sc->sc_dev, "unexpected status code %u\n",
1349                             le16toh(status->code));
1350                 }
1351
1352                 /* firmware was killed, stop processing received frames */
1353                 if (!(sc->flags & IPW_FLAG_FW_INITED))
1354                         return;
1355
1356                 sbd->bd->flags = 0;
1357         }
1358
1359         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1360
1361         /* kick the firmware */
1362         sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1;
1363         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
1364 }
1365
1366 static void
1367 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd)
1368 {
1369         struct ipw_soft_hdr *shdr;
1370         struct ipw_soft_buf *sbuf;
1371
1372         switch (sbd->type) {
1373         case IPW_SBD_TYPE_COMMAND:
1374                 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map,
1375                     BUS_DMASYNC_POSTWRITE);
1376                 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map);
1377                 break;
1378
1379         case IPW_SBD_TYPE_HEADER:
1380                 shdr = sbd->priv;
1381                 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE);
1382                 bus_dmamap_unload(sc->hdr_dmat, shdr->map);
1383                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
1384                 break;
1385
1386         case IPW_SBD_TYPE_DATA:
1387                 sbuf = sbd->priv;
1388                 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map,
1389                     BUS_DMASYNC_POSTWRITE);
1390                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1391                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
1392
1393                 if (sbuf->m->m_flags & M_TXCB)
1394                         ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/);
1395                 m_freem(sbuf->m);
1396                 ieee80211_free_node(sbuf->ni);
1397
1398                 sc->sc_tx_timer = 0;
1399                 break;
1400         }
1401
1402         sbd->type = IPW_SBD_TYPE_NOASSOC;
1403 }
1404
1405 static void
1406 ipw_tx_intr(struct ipw_softc *sc)
1407 {
1408         struct ifnet *ifp = sc->sc_ifp;
1409         struct ipw_soft_bd *sbd;
1410         uint32_t r, i;
1411
1412         if (!(sc->flags & IPW_FLAG_FW_INITED))
1413                 return;
1414
1415         r = CSR_READ_4(sc, IPW_CSR_TX_READ);
1416
1417         for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) {
1418                 sbd = &sc->stbd_list[i];
1419
1420                 if (sbd->type == IPW_SBD_TYPE_DATA)
1421                         ifp->if_opackets++;
1422
1423                 ipw_release_sbd(sc, sbd);
1424                 sc->txfree++;
1425         }
1426
1427         /* remember what the firmware has processed */
1428         sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1;
1429
1430         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1431         ipw_start_locked(ifp);
1432 }
1433
1434 static void
1435 ipw_intr(void *arg)
1436 {
1437         struct ipw_softc *sc = arg;
1438         uint32_t r;
1439         IPW_LOCK_DECL;
1440
1441         IPW_LOCK(sc);
1442
1443         if ((r = CSR_READ_4(sc, IPW_CSR_INTR)) == 0 || r == 0xffffffff) {
1444                 IPW_UNLOCK(sc);
1445                 return;
1446         }
1447
1448         /* disable interrupts */
1449         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1450
1451         /* acknowledge all interrupts */
1452         CSR_WRITE_4(sc, IPW_CSR_INTR, r);
1453
1454         if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) {
1455                 device_printf(sc->sc_dev, "firmware error\n");
1456                 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1457                 r = 0;  /* don't process more interrupts */
1458         }
1459
1460         if (r & IPW_INTR_FW_INIT_DONE)
1461                 wakeup(sc);
1462
1463         if (r & IPW_INTR_RX_TRANSFER)
1464                 ipw_rx_intr(sc);
1465
1466         if (r & IPW_INTR_TX_TRANSFER)
1467                 ipw_tx_intr(sc);
1468
1469         /* re-enable interrupts */
1470         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1471
1472         IPW_UNLOCK(sc);
1473 }
1474
1475 static void
1476 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1477 {
1478         if (error != 0)
1479                 return;
1480
1481         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1482
1483         *(bus_addr_t *)arg = segs[0].ds_addr;
1484 }
1485
1486 static const char *
1487 ipw_cmdname(int cmd)
1488 {
1489 #define N(a)    (sizeof(a) / sizeof(a[0]))
1490         static const struct {
1491                 int     cmd;
1492                 const char *name;
1493         } cmds[] = {
1494                 { IPW_CMD_ADD_MULTICAST,        "ADD_MULTICAST" },
1495                 { IPW_CMD_BROADCAST_SCAN,       "BROADCAST_SCAN" },
1496                 { IPW_CMD_DISABLE,              "DISABLE" },
1497                 { IPW_CMD_DISABLE_PHY,          "DISABLE_PHY" },
1498                 { IPW_CMD_ENABLE,               "ENABLE" },
1499                 { IPW_CMD_PREPARE_POWER_DOWN,   "PREPARE_POWER_DOWN" },
1500                 { IPW_CMD_SET_BASIC_TX_RATES,   "SET_BASIC_TX_RATES" },
1501                 { IPW_CMD_SET_BEACON_INTERVAL,  "SET_BEACON_INTERVAL" },
1502                 { IPW_CMD_SET_CHANNEL,          "SET_CHANNEL" },
1503                 { IPW_CMD_SET_CONFIGURATION,    "SET_CONFIGURATION" },
1504                 { IPW_CMD_SET_DESIRED_BSSID,    "SET_DESIRED_BSSID" },
1505                 { IPW_CMD_SET_ESSID,            "SET_ESSID" },
1506                 { IPW_CMD_SET_FRAG_THRESHOLD,   "SET_FRAG_THRESHOLD" },
1507                 { IPW_CMD_SET_MAC_ADDRESS,      "SET_MAC_ADDRESS" },
1508                 { IPW_CMD_SET_MANDATORY_BSSID,  "SET_MANDATORY_BSSID" },
1509                 { IPW_CMD_SET_MODE,             "SET_MODE" },
1510                 { IPW_CMD_SET_MSDU_TX_RATES,    "SET_MSDU_TX_RATES" },
1511                 { IPW_CMD_SET_POWER_MODE,       "SET_POWER_MODE" },
1512                 { IPW_CMD_SET_RTS_THRESHOLD,    "SET_RTS_THRESHOLD" },
1513                 { IPW_CMD_SET_SCAN_OPTIONS,     "SET_SCAN_OPTIONS" },
1514                 { IPW_CMD_SET_SECURITY_INFO,    "SET_SECURITY_INFO" },
1515                 { IPW_CMD_SET_TX_POWER_INDEX,   "SET_TX_POWER_INDEX" },
1516                 { IPW_CMD_SET_TX_RATES,         "SET_TX_RATES" },
1517                 { IPW_CMD_SET_WEP_FLAGS,        "SET_WEP_FLAGS" },
1518                 { IPW_CMD_SET_WEP_KEY,          "SET_WEP_KEY" },
1519                 { IPW_CMD_SET_WEP_KEY_INDEX,    "SET_WEP_KEY_INDEX" },
1520                 { IPW_CMD_SET_WPA_IE,           "SET_WPA_IE" },
1521
1522         };
1523         static char buf[12];
1524         int i;
1525
1526         for (i = 0; i < N(cmds); i++)
1527                 if (cmds[i].cmd == cmd)
1528                         return cmds[i].name;
1529         snprintf(buf, sizeof(buf), "%u", cmd);
1530         return buf;
1531 #undef N
1532 }
1533
1534 /*
1535  * Send a command to the firmware and wait for the acknowledgement.
1536  */
1537 static int
1538 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len)
1539 {
1540         struct ipw_soft_bd *sbd;
1541         bus_addr_t physaddr;
1542         int error;
1543
1544         IPW_LOCK_ASSERT(sc);
1545
1546         if (sc->flags & IPW_FLAG_BUSY) {
1547                 device_printf(sc->sc_dev, "%s: %s not sent, busy\n",
1548                         __func__, ipw_cmdname(type));
1549                 return EAGAIN;
1550         }
1551         sc->flags |= IPW_FLAG_BUSY;
1552
1553         sbd = &sc->stbd_list[sc->txcur];
1554
1555         error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd,
1556             sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0);
1557         if (error != 0) {
1558                 device_printf(sc->sc_dev, "could not map command DMA memory\n");
1559                 sc->flags &= ~IPW_FLAG_BUSY;
1560                 return error;
1561         }
1562
1563         sc->cmd.type = htole32(type);
1564         sc->cmd.subtype = 0;
1565         sc->cmd.len = htole32(len);
1566         sc->cmd.seq = 0;
1567         memcpy(sc->cmd.data, data, len);
1568
1569         sbd->type = IPW_SBD_TYPE_COMMAND;
1570         sbd->bd->physaddr = htole32(physaddr);
1571         sbd->bd->len = htole32(sizeof (struct ipw_cmd));
1572         sbd->bd->nfrag = 1;
1573         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND |
1574             IPW_BD_FLAG_TX_LAST_FRAGMENT;
1575
1576         bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE);
1577         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1578
1579 #ifdef IPW_DEBUG
1580         if (ipw_debug >= 4) {
1581                 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type,
1582                     0, 0, len);
1583                 /* Print the data buffer in the higher debug level */
1584                 if (ipw_debug >= 9 && len > 0) {
1585                         printf(" data: 0x");
1586                         for (int i = 1; i <= len; i++)
1587                                 printf("%1D", (u_char *)data + len - i, "");
1588                 }
1589                 printf("\n");
1590         }
1591 #endif
1592
1593         /* kick firmware */
1594         sc->txfree--;
1595         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1596         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1597
1598         /* wait at most one second for command to complete */
1599         error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz);
1600         if (error != 0) {
1601                 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n",
1602                     __func__, ipw_cmdname(type), error);
1603                 sc->flags &= ~IPW_FLAG_BUSY;
1604                 return (error);
1605         }
1606         return (0);
1607 }
1608
1609 static int
1610 ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni)
1611 {
1612         struct ipw_softc *sc = ifp->if_softc;
1613         struct ieee80211com *ic = ifp->if_l2com;
1614         struct ieee80211_frame *wh;
1615         struct ipw_soft_bd *sbd;
1616         struct ipw_soft_hdr *shdr;
1617         struct ipw_soft_buf *sbuf;
1618         struct ieee80211_key *k;
1619         struct mbuf *mnew;
1620         bus_dma_segment_t segs[IPW_MAX_NSEG];
1621         bus_addr_t physaddr;
1622         int nsegs, error, i;
1623
1624         wh = mtod(m0, struct ieee80211_frame *);
1625
1626         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1627                 k = ieee80211_crypto_encap(ni, m0);
1628                 if (k == NULL) {
1629                         m_freem(m0);
1630                         return ENOBUFS;
1631                 }
1632                 /* packet header may have moved, reset our local pointer */
1633                 wh = mtod(m0, struct ieee80211_frame *);
1634         }
1635
1636         if (bpf_peers_present(ifp->if_bpf)) {
1637                 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap;
1638
1639                 tap->wt_flags = 0;
1640                 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1641                 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1642
1643                 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0);
1644         }
1645
1646         shdr = SLIST_FIRST(&sc->free_shdr);
1647         sbuf = SLIST_FIRST(&sc->free_sbuf);
1648         KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool"));
1649
1650         shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND);
1651         shdr->hdr.subtype = 0;
1652         shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_WEP) ? 1 : 0;
1653         shdr->hdr.encrypt = 0;
1654         shdr->hdr.keyidx = 0;
1655         shdr->hdr.keysz = 0;
1656         shdr->hdr.fragmentsz = 0;
1657         IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2);
1658         if (ic->ic_opmode == IEEE80211_M_STA)
1659                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3);
1660         else
1661                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1);
1662
1663         /* trim IEEE802.11 header */
1664         m_adj(m0, sizeof (struct ieee80211_frame));
1665
1666         error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs,
1667             &nsegs, 0);
1668         if (error != 0 && error != EFBIG) {
1669                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1670                     error);
1671                 m_freem(m0);
1672                 return error;
1673         }
1674         if (error != 0) {
1675                 mnew = m_defrag(m0, M_DONTWAIT);
1676                 if (mnew == NULL) {
1677                         device_printf(sc->sc_dev,
1678                             "could not defragment mbuf\n");
1679                         m_freem(m0);
1680                         return ENOBUFS;
1681                 }
1682                 m0 = mnew;
1683
1684                 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0,
1685                     segs, &nsegs, 0);
1686                 if (error != 0) {
1687                         device_printf(sc->sc_dev,
1688                             "could not map mbuf (error %d)\n", error);
1689                         m_freem(m0);
1690                         return error;
1691                 }
1692         }
1693
1694         error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr,
1695             sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0);
1696         if (error != 0) {
1697                 device_printf(sc->sc_dev, "could not map header DMA memory\n");
1698                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1699                 m_freem(m0);
1700                 return error;
1701         }
1702
1703         SLIST_REMOVE_HEAD(&sc->free_sbuf, next);
1704         SLIST_REMOVE_HEAD(&sc->free_shdr, next);
1705
1706         sbd = &sc->stbd_list[sc->txcur];
1707         sbd->type = IPW_SBD_TYPE_HEADER;
1708         sbd->priv = shdr;
1709         sbd->bd->physaddr = htole32(physaddr);
1710         sbd->bd->len = htole32(sizeof (struct ipw_hdr));
1711         sbd->bd->nfrag = 1 + nsegs;
1712         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 |
1713             IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1714
1715         DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n",
1716             shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted,
1717             shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr,
1718             ":"));
1719
1720         sc->txfree--;
1721         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1722
1723         sbuf->m = m0;
1724         sbuf->ni = ni;
1725
1726         for (i = 0; i < nsegs; i++) {
1727                 sbd = &sc->stbd_list[sc->txcur];
1728
1729                 sbd->bd->physaddr = htole32(segs[i].ds_addr);
1730                 sbd->bd->len = htole32(segs[i].ds_len);
1731                 sbd->bd->nfrag = 0;
1732                 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3;
1733                 if (i == nsegs - 1) {
1734                         sbd->type = IPW_SBD_TYPE_DATA;
1735                         sbd->priv = sbuf;
1736                         sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT;
1737                 } else {
1738                         sbd->type = IPW_SBD_TYPE_NOASSOC;
1739                         sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1740                 }
1741
1742                 DPRINTFN(5, ("sending fragment (%d)\n", i));
1743
1744                 sc->txfree--;
1745                 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1746         }
1747
1748         bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE);
1749         bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE);
1750         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1751
1752         /* kick firmware */
1753         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1754
1755         return 0;
1756 }
1757
1758 static int
1759 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1760         const struct ieee80211_bpf_params *params)
1761 {
1762         /* no support; just discard */
1763         m_freem(m);
1764         ieee80211_free_node(ni);
1765         return 0;
1766 }
1767
1768 static void
1769 ipw_start(struct ifnet *ifp)
1770 {
1771         struct ipw_softc *sc = ifp->if_softc;
1772         IPW_LOCK_DECL;
1773
1774         IPW_LOCK(sc);
1775         ipw_start_locked(ifp);
1776         IPW_UNLOCK(sc);
1777 }
1778
1779 static void
1780 ipw_start_locked(struct ifnet *ifp)
1781 {
1782         struct ipw_softc *sc = ifp->if_softc;
1783         struct ieee80211_node *ni;
1784         struct mbuf *m;
1785
1786         IPW_LOCK_ASSERT(sc);
1787
1788         for (;;) {
1789                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1790                 if (m == NULL)
1791                         break;
1792                 if (sc->txfree < 1 + IPW_MAX_NSEG) {
1793                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
1794                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1795                         break;
1796                 }
1797                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1798                 m = ieee80211_encap(ni, m);
1799                 if (m == NULL) {
1800                         ieee80211_free_node(ni);
1801                         continue;
1802                 }
1803                 if (ipw_tx_start(ifp, m, ni) != 0) {
1804                         ieee80211_free_node(ni);
1805                         ifp->if_oerrors++;
1806                         break;
1807                 }
1808                 /* start watchdog timer */
1809                 sc->sc_tx_timer = 5;
1810         }
1811 }
1812
1813 static void
1814 ipw_watchdog(void *arg)
1815 {
1816         struct ipw_softc *sc = arg;
1817         struct ifnet *ifp = sc->sc_ifp;
1818         struct ieee80211com *ic = ifp->if_l2com;
1819
1820         IPW_LOCK_ASSERT(sc);
1821
1822         if (sc->sc_tx_timer > 0) {
1823                 if (--sc->sc_tx_timer == 0) {
1824                         if_printf(ifp, "device timeout\n");
1825                         ifp->if_oerrors++;
1826                         taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1827                 }
1828         }
1829         if (sc->sc_scan_timer > 0) {
1830                 if (--sc->sc_scan_timer == 0) {
1831                         DPRINTFN(3, ("Scan timeout\n"));
1832                         /* End the scan */
1833                         if (sc->flags & IPW_FLAG_SCANNING) {
1834                                 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps));
1835                                 sc->flags &= ~IPW_FLAG_SCANNING;
1836                         }
1837                 }
1838         }
1839         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1840                 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
1841 }
1842
1843 static int
1844 ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1845 {
1846         struct ipw_softc *sc = ifp->if_softc;
1847         struct ieee80211com *ic = ifp->if_l2com;
1848         struct ifreq *ifr = (struct ifreq *) data;
1849         int error = 0, startall = 0;
1850         IPW_LOCK_DECL;
1851
1852         switch (cmd) {
1853         case SIOCSIFFLAGS:
1854                 IPW_LOCK(sc);
1855                 if (ifp->if_flags & IFF_UP) {
1856                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1857                                 ipw_init_locked(sc);
1858                                 startall = 1;
1859                         }
1860                 } else {
1861                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1862                                 ipw_stop_locked(sc);
1863                 }
1864                 IPW_UNLOCK(sc);
1865                 if (startall)
1866                         ieee80211_start_all(ic);
1867                 break;
1868         case SIOCGIFMEDIA:
1869                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1870                 break;
1871         case SIOCGIFADDR:
1872                 error = ether_ioctl(ifp, cmd, data);
1873                 break;
1874         default:
1875                 error = EINVAL;
1876                 break;
1877         }
1878         return error;
1879 }
1880
1881 static void
1882 ipw_stop_master(struct ipw_softc *sc)
1883 {
1884         uint32_t tmp;
1885         int ntries;
1886
1887         /* disable interrupts */
1888         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1889
1890         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER);
1891         for (ntries = 0; ntries < 50; ntries++) {
1892                 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED)
1893                         break;
1894                 DELAY(10);
1895         }
1896         if (ntries == 50)
1897                 device_printf(sc->sc_dev, "timeout waiting for master\n");
1898
1899         tmp = CSR_READ_4(sc, IPW_CSR_RST);
1900         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET);
1901
1902         /* Clear all flags except the following */
1903         sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH;
1904 }
1905
1906 static int
1907 ipw_reset(struct ipw_softc *sc)
1908 {
1909         uint32_t tmp;
1910         int ntries;
1911
1912         ipw_stop_master(sc);
1913
1914         /* move adapter to D0 state */
1915         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1916         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1917
1918         /* wait for clock stabilization */
1919         for (ntries = 0; ntries < 1000; ntries++) {
1920                 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY)
1921                         break;
1922                 DELAY(200);
1923         }
1924         if (ntries == 1000)
1925                 return EIO;
1926
1927         tmp =  CSR_READ_4(sc, IPW_CSR_RST);
1928         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET);
1929
1930         DELAY(10);
1931
1932         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1933         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1934
1935         return 0;
1936 }
1937
1938 static int
1939 ipw_waitfordisable(struct ipw_softc *sc, int waitfor)
1940 {
1941         int ms = hz < 1000 ? 1 : hz/10;
1942         int i, error;
1943
1944         for (i = 0; i < 100; i++) {
1945                 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor)
1946                         return 0;
1947                 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms);
1948                 if (error == 0 || error != EWOULDBLOCK)
1949                         return 0;
1950         }
1951         DPRINTF(("%s: timeout waiting for %s\n",
1952                 __func__, waitfor ? "disable" : "enable"));
1953         return ETIMEDOUT;
1954 }
1955
1956 static int
1957 ipw_enable(struct ipw_softc *sc)
1958 {
1959         int error;
1960
1961         if ((sc->flags & IPW_FLAG_ENABLED) == 0) {
1962                 DPRINTF(("Enable adapter\n"));
1963                 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
1964                 if (error != 0)
1965                         return error;
1966                 error = ipw_waitfordisable(sc, 0);
1967                 if (error != 0)
1968                         return error;
1969                 sc->flags |= IPW_FLAG_ENABLED;
1970         }
1971         return 0;
1972 }
1973
1974 static int
1975 ipw_disable(struct ipw_softc *sc)
1976 {
1977         int error;
1978
1979         if (sc->flags & IPW_FLAG_ENABLED) {
1980                 DPRINTF(("Disable adapter\n"));
1981                 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0);
1982                 if (error != 0)
1983                         return error;
1984                 error = ipw_waitfordisable(sc, 1);
1985                 if (error != 0)
1986                         return error;
1987                 sc->flags &= ~IPW_FLAG_ENABLED;
1988         }
1989         return 0;
1990 }
1991
1992 /*
1993  * Upload the microcode to the device.
1994  */
1995 static int
1996 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size)
1997 {
1998         int ntries;
1999
2000         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
2001         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
2002
2003         MEM_WRITE_2(sc, 0x220000, 0x0703);
2004         MEM_WRITE_2(sc, 0x220000, 0x0707);
2005
2006         MEM_WRITE_1(sc, 0x210014, 0x72);
2007         MEM_WRITE_1(sc, 0x210014, 0x72);
2008
2009         MEM_WRITE_1(sc, 0x210000, 0x40);
2010         MEM_WRITE_1(sc, 0x210000, 0x00);
2011         MEM_WRITE_1(sc, 0x210000, 0x40);
2012
2013         MEM_WRITE_MULTI_1(sc, 0x210010, uc, size);
2014
2015         MEM_WRITE_1(sc, 0x210000, 0x00);
2016         MEM_WRITE_1(sc, 0x210000, 0x00);
2017         MEM_WRITE_1(sc, 0x210000, 0x80);
2018
2019         MEM_WRITE_2(sc, 0x220000, 0x0703);
2020         MEM_WRITE_2(sc, 0x220000, 0x0707);
2021
2022         MEM_WRITE_1(sc, 0x210014, 0x72);
2023         MEM_WRITE_1(sc, 0x210014, 0x72);
2024
2025         MEM_WRITE_1(sc, 0x210000, 0x00);
2026         MEM_WRITE_1(sc, 0x210000, 0x80);
2027
2028         for (ntries = 0; ntries < 10; ntries++) {
2029                 if (MEM_READ_1(sc, 0x210000) & 1)
2030                         break;
2031                 DELAY(10);
2032         }
2033         if (ntries == 10) {
2034                 device_printf(sc->sc_dev,
2035                     "timeout waiting for ucode to initialize\n");
2036                 return EIO;
2037         }
2038
2039         MEM_WRITE_4(sc, 0x3000e0, 0);
2040
2041         return 0;
2042 }
2043
2044 /* set of macros to handle unaligned little endian data in firmware image */
2045 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2046 #define GETLE16(p) ((p)[0] | (p)[1] << 8)
2047 static int
2048 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size)
2049 {
2050         const uint8_t *p, *end;
2051         uint32_t tmp, dst;
2052         uint16_t len;
2053         int error;
2054
2055         p = fw;
2056         end = fw + size;
2057         while (p < end) {
2058                 dst = GETLE32(p); p += 4;
2059                 len = GETLE16(p); p += 2;
2060
2061                 ipw_write_mem_1(sc, dst, p, len);
2062                 p += len;
2063         }
2064
2065         CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK |
2066             IPW_IO_LED_OFF);
2067
2068         /* enable interrupts */
2069         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
2070
2071         /* kick the firmware */
2072         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
2073
2074         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
2075         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY);
2076
2077         /* wait at most one second for firmware initialization to complete */
2078         if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) {
2079                 device_printf(sc->sc_dev, "timeout waiting for firmware "
2080                     "initialization to complete\n");
2081                 return error;
2082         }
2083
2084         tmp = CSR_READ_4(sc, IPW_CSR_IO);
2085         CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK |
2086             IPW_IO_GPIO3_MASK);
2087
2088         return 0;
2089 }
2090
2091 static int
2092 ipw_setwepkeys(struct ipw_softc *sc)
2093 {
2094         struct ifnet *ifp = sc->sc_ifp;
2095         struct ieee80211com *ic = ifp->if_l2com;
2096         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2097         struct ipw_wep_key wepkey;
2098         struct ieee80211_key *wk;
2099         int error, i;
2100
2101         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2102                 wk = &vap->iv_nw_keys[i];
2103
2104                 if (wk->wk_cipher == NULL ||
2105                     wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP)
2106                         continue;
2107
2108                 wepkey.idx = i;
2109                 wepkey.len = wk->wk_keylen;
2110                 memset(wepkey.key, 0, sizeof wepkey.key);
2111                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2112                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2113                     wepkey.len));
2114                 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey,
2115                     sizeof wepkey);
2116                 if (error != 0)
2117                         return error;
2118         }
2119         return 0;
2120 }
2121
2122 static int
2123 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen)
2124 {
2125         struct ipw_wpa_ie wpaie;
2126
2127         memset(&wpaie, 0, sizeof(wpaie));
2128         wpaie.len = htole32(ielen);
2129         /* XXX verify length */
2130         memcpy(&wpaie.ie, ie, ielen);
2131         DPRINTF(("Setting WPA IE\n"));
2132         return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie));
2133 }
2134
2135 static int
2136 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid)
2137 {
2138         static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
2139
2140         if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) {
2141                 DPRINTF(("Setting mandatory BSSID to null\n"));
2142                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0);
2143         } else {
2144                 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":"));
2145                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID,
2146                         bssid, IEEE80211_ADDR_LEN);
2147         }
2148 }
2149
2150 static int
2151 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen)
2152 {
2153         if (ssidlen == 0) {
2154                 /*
2155                  * A bug in the firmware breaks the ``don't associate''
2156                  * bit in the scan options command.  To compensate for
2157                  * this install a bogus ssid when no ssid is specified
2158                  * so the firmware won't try to associate.
2159                  */
2160                 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n"));
2161                 return ipw_cmd(sc, IPW_CMD_SET_ESSID,
2162                         "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27"
2163                         "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31"
2164                         "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b"
2165                         "\x3c\x3d", IEEE80211_NWID_LEN);
2166         } else {
2167 #ifdef IPW_DEBUG
2168                 if (ipw_debug > 0) {
2169                         printf("Setting ESSID to ");
2170                         ieee80211_print_essid(ssid, ssidlen);
2171                         printf("\n");
2172                 }
2173 #endif
2174                 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen);
2175         }
2176 }
2177
2178 static int
2179 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags)
2180 {
2181         struct ipw_scan_options opts;
2182
2183         DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags));
2184         opts.channels = htole32(chanmask);
2185         opts.flags = htole32(flags);
2186         return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts));
2187 }
2188
2189 /*
2190  * Handler for sc_scan_task.  This is a simple wrapper around ipw_scan().
2191  */
2192 static void
2193 ipw_scan_task(void *context, int pending)
2194 {
2195         struct ipw_softc *sc = context;
2196         IPW_LOCK_DECL;
2197
2198         IPW_LOCK(sc);
2199         ipw_scan(sc);
2200         IPW_UNLOCK(sc);
2201 }
2202
2203 static int
2204 ipw_scan(struct ipw_softc *sc)
2205 {
2206         uint32_t params;
2207         int error;
2208
2209         DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags));
2210
2211         if (sc->flags & IPW_FLAG_SCANNING)
2212                 return (EBUSY);
2213         sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK;
2214
2215         /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */
2216         error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE);
2217         if (error != 0)
2218                 goto done;
2219
2220         /*
2221          * Setup null/bogus ssid so firmware doesn't use any previous
2222          * ssid to try and associate.  This is because the ``don't
2223          * associate'' option bit is broken (sigh).
2224          */
2225         error = ipw_setssid(sc, NULL, 0);
2226         if (error != 0)
2227                 goto done;
2228
2229         /*
2230          * NB: the adapter may be disabled on association lost;
2231          *     if so just re-enable it to kick off scanning.
2232          */
2233         DPRINTF(("Starting scan\n"));
2234         sc->sc_scan_timer = 3;
2235         if (sc->flags & IPW_FLAG_ENABLED) {
2236                 params = 0;                             /* XXX? */
2237                 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN,
2238                                 &params, sizeof(params));
2239         } else
2240                 error = ipw_enable(sc);
2241 done:
2242         if (error != 0) {
2243                 DPRINTF(("Scan failed\n"));
2244                 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK);
2245         }
2246         return (error);
2247 }
2248
2249 static int
2250 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan)
2251 {
2252         struct ifnet *ifp = sc->sc_ifp;
2253         struct ieee80211com *ic = ifp->if_l2com;
2254         uint32_t data;
2255         int error;
2256
2257         data = htole32(ieee80211_chan2ieee(ic, chan));
2258         DPRINTF(("Setting channel to %u\n", le32toh(data)));
2259         error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data);
2260         if (error == 0)
2261                 ipw_setcurchan(sc, chan);
2262         return error;
2263 }
2264
2265 static void
2266 ipw_assoc_task(void *context, int pending)
2267 {
2268         struct ieee80211vap *vap = context;
2269         struct ifnet *ifp = vap->iv_ic->ic_ifp;
2270         struct ieee80211com *ic = ifp->if_l2com;
2271         struct ipw_softc *sc = ifp->if_softc;
2272         struct ieee80211_node *ni = vap->iv_bss;
2273         struct ipw_security security;
2274         uint32_t data;
2275         int error;
2276         IPW_LOCK_DECL;
2277
2278         IPW_LOCK(sc);
2279         error = ipw_disable(sc);
2280         if (error != 0)
2281                 goto done;
2282
2283         memset(&security, 0, sizeof security);
2284         security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ?
2285             IPW_AUTH_SHARED : IPW_AUTH_OPEN;
2286         security.ciphers = htole32(IPW_CIPHER_NONE);
2287         DPRINTF(("Setting authmode to %u\n", security.authmode));
2288         error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security,
2289             sizeof security);
2290         if (error != 0)
2291                 goto done;
2292
2293         data = htole32(vap->iv_rtsthreshold);
2294         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2295         error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2296         if (error != 0)
2297                 goto done;
2298
2299         data = htole32(vap->iv_fragthreshold);
2300         DPRINTF(("Setting frag threshold to %u\n", le32toh(data)));
2301         error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2302         if (error != 0)
2303                 goto done;
2304
2305         if (vap->iv_flags & IEEE80211_F_PRIVACY) {
2306                 error = ipw_setwepkeys(sc);
2307                 if (error != 0)
2308                         goto done;
2309
2310                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) {
2311                         data = htole32(vap->iv_def_txkey);
2312                         DPRINTF(("Setting wep tx key index to %u\n",
2313                                 le32toh(data)));
2314                         error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data,
2315                             sizeof data);
2316                         if (error != 0)
2317                                 goto done;
2318                 }
2319         }
2320
2321         data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0);
2322         DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data)));
2323         error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data);
2324         if (error != 0)
2325                 goto done;
2326
2327         error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen);
2328         if (error != 0)
2329                 goto done;
2330
2331         error = ipw_setbssid(sc, ni->ni_bssid);
2332         if (error != 0)
2333                 goto done;
2334
2335         if (vap->iv_appie_assocreq != NULL) {
2336                 struct ieee80211_appie *ie = vap->iv_appie_assocreq;
2337                 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len);
2338                 if (error != 0)
2339                         goto done;
2340         }
2341         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2342                 error = ipw_setchannel(sc, ni->ni_chan);
2343                 if (error != 0)
2344                         goto done;
2345         }
2346
2347         /* lock scan to ap's channel and enable associate */
2348         error = ipw_setscanopts(sc,
2349             1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0);
2350         if (error != 0)
2351                 goto done;
2352
2353         error = ipw_enable(sc);         /* finally, enable adapter */
2354         if (error == 0)
2355                 sc->flags |= IPW_FLAG_ASSOCIATING;
2356 done:
2357         IPW_UNLOCK(sc);
2358 }
2359
2360 static void
2361 ipw_disassoc_task(void *context, int pending)
2362 {
2363         struct ieee80211vap *vap = context;
2364         struct ifnet *ifp = vap->iv_ic->ic_ifp;
2365         struct ieee80211_node *ni = vap->iv_bss;
2366         struct ipw_softc *sc = ifp->if_softc;
2367         IPW_LOCK_DECL;
2368
2369         IPW_LOCK(sc);
2370         DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":"));
2371         /*
2372          * NB: don't try to do this if ipw_stop_master has
2373          *     shutdown the firmware and disabled interrupts.
2374          */
2375         if (sc->flags & IPW_FLAG_FW_INITED) {
2376                 sc->flags &= ~IPW_FLAG_ASSOCIATED;
2377                 /*
2378                  * NB: firmware currently ignores bssid parameter, but
2379                  *     supply it in case this changes (follow linux driver).
2380                  */
2381                 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE,
2382                         ni->ni_bssid, IEEE80211_ADDR_LEN);
2383         }
2384         IPW_UNLOCK(sc);
2385 }
2386
2387 /*
2388  * Handler for sc_init_task.  This is a simple wrapper around ipw_init().
2389  * It is called on firmware panics or on watchdog timeouts.
2390  */
2391 static void
2392 ipw_init_task(void *context, int pending)
2393 {
2394         ipw_init(context);
2395 }
2396
2397 static void
2398 ipw_init(void *priv)
2399 {
2400         struct ipw_softc *sc = priv;
2401         struct ifnet *ifp = sc->sc_ifp;
2402         struct ieee80211com *ic = ifp->if_l2com;
2403         IPW_LOCK_DECL;
2404
2405         IPW_LOCK(sc);
2406         ipw_init_locked(sc);
2407         IPW_UNLOCK(sc);
2408
2409         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2410                 ieee80211_start_all(ic);                /* start all vap's */
2411 }
2412
2413 static void
2414 ipw_init_locked(struct ipw_softc *sc)
2415 {
2416         struct ifnet *ifp = sc->sc_ifp;
2417         struct ieee80211com *ic = ifp->if_l2com;
2418         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2419         const struct firmware *fp;
2420         const struct ipw_firmware_hdr *hdr;
2421         const char *fw;
2422
2423         IPW_LOCK_ASSERT(sc);
2424
2425         DPRINTF(("%s: state %s flags 0x%x\n", __func__,
2426                 ieee80211_state_name[vap->iv_state], sc->flags));
2427
2428         /*
2429          * Avoid re-entrant calls.  We need to release the mutex in ipw_init()
2430          * when loading the firmware and we don't want to be called during this
2431          * operation.
2432          */
2433         if (sc->flags & IPW_FLAG_INIT_LOCKED)
2434                 return;
2435         sc->flags |= IPW_FLAG_INIT_LOCKED;
2436
2437         ipw_stop_locked(sc);
2438
2439         if (ipw_reset(sc) != 0) {
2440                 device_printf(sc->sc_dev, "could not reset adapter\n");
2441                 goto fail;
2442         }
2443
2444         if (sc->sc_firmware == NULL) {
2445                 device_printf(sc->sc_dev, "no firmware\n");
2446                 goto fail;
2447         }
2448         /* NB: consistency already checked on load */
2449         fp = sc->sc_firmware;
2450         hdr = (const struct ipw_firmware_hdr *)fp->data;
2451
2452         DPRINTF(("Loading firmware image '%s'\n", fp->name));
2453         fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz);
2454         if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) {
2455                 device_printf(sc->sc_dev, "could not load microcode\n");
2456                 goto fail;
2457         }
2458
2459         ipw_stop_master(sc);
2460
2461         /*
2462          * Setup tx, rx and status rings.
2463          */
2464         sc->txold = IPW_NTBD - 1;
2465         sc->txcur = 0;
2466         sc->txfree = IPW_NTBD - 2;
2467         sc->rxcur = IPW_NRBD - 1;
2468
2469         CSR_WRITE_4(sc, IPW_CSR_TX_BASE,  sc->tbd_phys);
2470         CSR_WRITE_4(sc, IPW_CSR_TX_SIZE,  IPW_NTBD);
2471         CSR_WRITE_4(sc, IPW_CSR_TX_READ,  0);
2472         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
2473
2474         CSR_WRITE_4(sc, IPW_CSR_RX_BASE,  sc->rbd_phys);
2475         CSR_WRITE_4(sc, IPW_CSR_RX_SIZE,  IPW_NRBD);
2476         CSR_WRITE_4(sc, IPW_CSR_RX_READ,  0);
2477         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
2478
2479         CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys);
2480
2481         fw = (const char *)fp->data + sizeof *hdr;
2482         if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) {
2483                 device_printf(sc->sc_dev, "could not load firmware\n");
2484                 goto fail;
2485         }
2486
2487         sc->flags |= IPW_FLAG_FW_INITED;
2488
2489         /* retrieve information tables base addresses */
2490         sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE);
2491         sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE);
2492
2493         ipw_write_table1(sc, IPW_INFO_LOCK, 0);
2494
2495         if (ipw_config(sc) != 0) {
2496                 device_printf(sc->sc_dev, "device configuration failed\n");
2497                 goto fail;
2498         }
2499
2500         callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
2501         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2502         ifp->if_drv_flags |= IFF_DRV_RUNNING;
2503
2504         sc->flags &=~ IPW_FLAG_INIT_LOCKED;
2505         return;
2506
2507 fail:
2508         ipw_stop_locked(sc);
2509         sc->flags &=~ IPW_FLAG_INIT_LOCKED;
2510 }
2511
2512 static int
2513 ipw_config(struct ipw_softc *sc)
2514 {
2515         struct ifnet *ifp = sc->sc_ifp;
2516         struct ieee80211com *ic = ifp->if_l2com;
2517         struct ipw_configuration config;
2518         uint32_t data;
2519         int error;
2520
2521         error = ipw_disable(sc);
2522         if (error != 0)
2523                 return error;
2524
2525         switch (ic->ic_opmode) {
2526         case IEEE80211_M_STA:
2527         case IEEE80211_M_HOSTAP:
2528         case IEEE80211_M_WDS:           /* XXX */
2529                 data = htole32(IPW_MODE_BSS);
2530                 break;
2531         case IEEE80211_M_IBSS:
2532         case IEEE80211_M_AHDEMO:
2533                 data = htole32(IPW_MODE_IBSS);
2534                 break;
2535         case IEEE80211_M_MONITOR:
2536                 data = htole32(IPW_MODE_MONITOR);
2537                 break;
2538         }
2539         DPRINTF(("Setting mode to %u\n", le32toh(data)));
2540         error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data);
2541         if (error != 0)
2542                 return error;
2543
2544         if (ic->ic_opmode == IEEE80211_M_IBSS ||
2545             ic->ic_opmode == IEEE80211_M_MONITOR) {
2546                 error = ipw_setchannel(sc, ic->ic_curchan);
2547                 if (error != 0)
2548                         return error;
2549         }
2550
2551         if (ic->ic_opmode == IEEE80211_M_MONITOR)
2552                 return ipw_enable(sc);
2553
2554         config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK |
2555             IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE);
2556         if (ic->ic_opmode == IEEE80211_M_IBSS)
2557                 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START);
2558         if (ifp->if_flags & IFF_PROMISC)
2559                 config.flags |= htole32(IPW_CFG_PROMISCUOUS);
2560         config.bss_chan = htole32(0x3fff); /* channels 1-14 */
2561         config.ibss_chan = htole32(0x7ff); /* channels 1-11 */
2562         DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags)));
2563         error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config);
2564         if (error != 0)
2565                 return error;
2566
2567         data = htole32(0x3); /* 1, 2 */
2568         DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data)));
2569         error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data);
2570         if (error != 0)
2571                 return error;
2572
2573         /* NB: use the same rate set */
2574         DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data)));
2575         error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data);
2576         if (error != 0)
2577                 return error;
2578
2579         data = htole32(0xf); /* 1, 2, 5.5, 11 */
2580         DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data)));
2581         error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data);
2582         if (error != 0)
2583                 return error;
2584
2585         data = htole32(IPW_POWER_MODE_CAM);
2586         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2587         error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data);
2588         if (error != 0)
2589                 return error;
2590
2591         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2592                 data = htole32(32); /* default value */
2593                 DPRINTF(("Setting tx power index to %u\n", le32toh(data)));
2594                 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data,
2595                     sizeof data);
2596                 if (error != 0)
2597                         return error;
2598         }
2599
2600         return 0;
2601 }
2602
2603 static void
2604 ipw_stop(void *priv)
2605 {
2606         struct ipw_softc *sc = priv;
2607         IPW_LOCK_DECL;
2608
2609         IPW_LOCK(sc);
2610         ipw_stop_locked(sc);
2611         IPW_UNLOCK(sc);
2612 }
2613
2614 static void
2615 ipw_stop_locked(struct ipw_softc *sc)
2616 {
2617         struct ifnet *ifp = sc->sc_ifp;
2618         int i;
2619
2620         IPW_LOCK_ASSERT(sc);
2621
2622         callout_stop(&sc->sc_wdtimer);
2623         ipw_stop_master(sc);
2624
2625         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET);
2626
2627         /*
2628          * Release tx buffers.
2629          */
2630         for (i = 0; i < IPW_NTBD; i++)
2631                 ipw_release_sbd(sc, &sc->stbd_list[i]);
2632
2633         sc->sc_tx_timer = 0;
2634         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2635 }
2636
2637 static int
2638 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)
2639 {
2640         struct ipw_softc *sc = arg1;
2641         uint32_t i, size, buf[256];
2642
2643         memset(buf, 0, sizeof buf);
2644
2645         if (!(sc->flags & IPW_FLAG_FW_INITED))
2646                 return SYSCTL_OUT(req, buf, sizeof buf);
2647
2648         CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base);
2649
2650         size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256);
2651         for (i = 1; i < size; i++)
2652                 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA));
2653
2654         return SYSCTL_OUT(req, buf, size);
2655 }
2656
2657 static int
2658 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)
2659 {
2660         struct ipw_softc *sc = arg1;
2661         int val;
2662
2663         val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) &&
2664                 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED));
2665
2666         return SYSCTL_OUT(req, &val, sizeof val);
2667 }
2668
2669 static uint32_t
2670 ipw_read_table1(struct ipw_softc *sc, uint32_t off)
2671 {
2672         return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off));
2673 }
2674
2675 static void
2676 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info)
2677 {
2678         MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info);
2679 }
2680
2681 #if 0
2682 static int
2683 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len)
2684 {
2685         uint32_t addr, info;
2686         uint16_t count, size;
2687         uint32_t total;
2688
2689         /* addr[4] + count[2] + size[2] */
2690         addr = MEM_READ_4(sc, sc->table2_base + off);
2691         info = MEM_READ_4(sc, sc->table2_base + off + 4);
2692
2693         count = info >> 16;
2694         size = info & 0xffff;
2695         total = count * size;
2696
2697         if (total > *len) {
2698                 *len = total;
2699                 return EINVAL;
2700         }
2701
2702         *len = total;
2703         ipw_read_mem_1(sc, addr, buf, total);
2704
2705         return 0;
2706 }
2707
2708 static void
2709 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2710     bus_size_t count)
2711 {
2712         for (; count > 0; offset++, datap++, count--) {
2713                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2714                 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3));
2715         }
2716 }
2717 #endif
2718
2719 static void
2720 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap,
2721     bus_size_t count)
2722 {
2723         for (; count > 0; offset++, datap++, count--) {
2724                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2725                 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap);
2726         }
2727 }
2728
2729 static void
2730 ipw_scan_start(struct ieee80211com *ic)
2731 {
2732         struct ifnet *ifp = ic->ic_ifp;
2733         struct ipw_softc *sc = ifp->if_softc;
2734         IPW_LOCK_DECL;
2735
2736         IPW_LOCK(sc);
2737         if (!(sc->flags & IPW_FLAG_SCANNING))
2738                 taskqueue_enqueue(taskqueue_swi, &sc->sc_scan_task);
2739         IPW_UNLOCK(sc);
2740 }
2741
2742 static void
2743 ipw_set_channel(struct ieee80211com *ic)
2744 {
2745         struct ifnet *ifp = ic->ic_ifp;
2746         struct ipw_softc *sc = ifp->if_softc;
2747         IPW_LOCK_DECL;
2748
2749         IPW_LOCK(sc);
2750         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2751                 ipw_disable(sc);
2752                 ipw_setchannel(sc, ic->ic_curchan);
2753                 ipw_enable(sc);
2754         }
2755         IPW_UNLOCK(sc);
2756 }
2757
2758 static void
2759 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
2760 {
2761         /* NB: all channels are scanned at once */
2762 }
2763
2764 static void
2765 ipw_scan_mindwell(struct ieee80211_scan_state *ss)
2766 {
2767         /* NB: don't try to abort scan; wait for firmware to finish */
2768 }
2769
2770 static void
2771 ipw_scan_end(struct ieee80211com *ic)
2772 {
2773         struct ifnet *ifp = ic->ic_ifp;
2774         struct ipw_softc *sc = ifp->if_softc;
2775         IPW_LOCK_DECL;
2776
2777         IPW_LOCK(sc);
2778         sc->flags &= ~IPW_FLAG_SCANNING;
2779         IPW_UNLOCK(sc);
2780 }