sys/dev/ipw/if_ipw.c

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