sys/dev/ipw/if_ipw.c

   1 /*-
   2  * Copyright (c) 2004-2006
   3  *      Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
   4  * Copyright (c) 2006 Sam Leffler, Errno Consulting
   5  * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice unmodified, this list of conditions, and the following
  12  *    disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 /*-
  34  * Intel(R) PRO/Wireless 2100 MiniPCI driver
  35  * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/sysctl.h>
  40 #include <sys/sockio.h>
  41 #include <sys/mbuf.h>
  42 #include <sys/kernel.h>
  43 #include <sys/socket.h>
  44 #include <sys/systm.h>
  45 #include <sys/malloc.h>
  46 #include <sys/queue.h>
  47 #include <sys/taskqueue.h>
  48 #include <sys/module.h>
  49 #include <sys/bus.h>
  50 #include <sys/endian.h>
  51 #include <sys/linker.h>
  52 #include <sys/firmware.h>
  53
  54 #include <machine/bus.h>
  55 #include <machine/resource.h>
  56 #include <sys/rman.h>
  57
  58 #include <dev/pci/pcireg.h>
  59 #include <dev/pci/pcivar.h>
  60
  61 #include <net/bpf.h>
  62 #include <net/if.h>
  63 #include <net/if_var.h>
  64 #include <net/if_arp.h>
  65 #include <net/ethernet.h>
  66 #include <net/if_dl.h>
  67 #include <net/if_media.h>
  68 #include <net/if_types.h>
  69
  70 #include <net80211/ieee80211_var.h>
  71 #include <net80211/ieee80211_radiotap.h>
  72
  73 #include <netinet/in.h>
  74 #include <netinet/in_systm.h>
  75 #include <netinet/in_var.h>
  76 #include <netinet/ip.h>
  77 #include <netinet/if_ether.h>
  78
  79 #include <dev/ipw/if_ipwreg.h>
  80 #include <dev/ipw/if_ipwvar.h>
  81
  82 #define IPW_DEBUG
  83 #ifdef IPW_DEBUG
  84 #define DPRINTF(x)      do { if (ipw_debug > 0) printf x; } while (0)
  85 #define DPRINTFN(n, x)  do { if (ipw_debug >= (n)) printf x; } while (0)
  86 int ipw_debug = 0;
  87 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level");
  88 #else
  89 #define DPRINTF(x)
  90 #define DPRINTFN(n, x)
  91 #endif
  92
  93 MODULE_DEPEND(ipw, pci,  1, 1, 1);
  94 MODULE_DEPEND(ipw, wlan, 1, 1, 1);
  95 MODULE_DEPEND(ipw, firmware, 1, 1, 1);
  96
  97 struct ipw_ident {
  98         uint16_t        vendor;
  99         uint16_t        device;
 100         const char      *name;
 101 };
 102
 103 static const struct ipw_ident ipw_ident_table[] = {
 104         { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" },
 105
 106         { 0, 0, NULL }
 107 };
 108
 109 static struct ieee80211vap *ipw_vap_create(struct ieee80211com *,
 110                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
 111                     const uint8_t [IEEE80211_ADDR_LEN],
 112                     const uint8_t [IEEE80211_ADDR_LEN]);
 113 static void     ipw_vap_delete(struct ieee80211vap *);
 114 static int      ipw_dma_alloc(struct ipw_softc *);
 115 static void     ipw_release(struct ipw_softc *);
 116 static void     ipw_media_status(struct ifnet *, struct ifmediareq *);
 117 static int      ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 118 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t);
 119 static void     ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *);
 120 static void     ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *);
 121 static void     ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *,
 122                     struct ipw_soft_bd *, struct ipw_soft_buf *);
 123 static void     ipw_rx_intr(struct ipw_softc *);
 124 static void     ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *);
 125 static void     ipw_tx_intr(struct ipw_softc *);
 126 static void     ipw_intr(void *);
 127 static void     ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int);
 128 static const char * ipw_cmdname(int);
 129 static int      ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t);
 130 static int      ipw_tx_start(struct ipw_softc *, struct mbuf *,
 131                     struct ieee80211_node *);
 132 static int      ipw_raw_xmit(struct ieee80211_node *, struct mbuf *,
 133                     const struct ieee80211_bpf_params *);
 134 static int      ipw_transmit(struct ieee80211com *, struct mbuf *);
 135 static void     ipw_start(struct ipw_softc *);
 136 static void     ipw_watchdog(void *);
 137 static void     ipw_parent(struct ieee80211com *);
 138 static void     ipw_stop_master(struct ipw_softc *);
 139 static int      ipw_enable(struct ipw_softc *);
 140 static int      ipw_disable(struct ipw_softc *);
 141 static int      ipw_reset(struct ipw_softc *);
 142 static int      ipw_load_ucode(struct ipw_softc *, const char *, int);
 143 static int      ipw_load_firmware(struct ipw_softc *, const char *, int);
 144 static int      ipw_config(struct ipw_softc *);
 145 static void     ipw_assoc(struct ieee80211com *, struct ieee80211vap *);
 146 static void     ipw_disassoc(struct ieee80211com *, struct ieee80211vap *);
 147 static void     ipw_init_task(void *, int);
 148 static void     ipw_init(void *);
 149 static void     ipw_init_locked(struct ipw_softc *);
 150 static void     ipw_stop(void *);
 151 static void     ipw_stop_locked(struct ipw_softc *);
 152 static int      ipw_sysctl_stats(SYSCTL_HANDLER_ARGS);
 153 static int      ipw_sysctl_radio(SYSCTL_HANDLER_ARGS);
 154 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t);
 155 static void     ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t);
 156 #if 0
 157 static int      ipw_read_table2(struct ipw_softc *, uint32_t, void *,
 158                     uint32_t *);
 159 static void     ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *,
 160                     bus_size_t);
 161 #endif
 162 static void     ipw_write_mem_1(struct ipw_softc *, bus_size_t,
 163                     const uint8_t *, bus_size_t);
 164 static int      ipw_scan(struct ipw_softc *);
 165 static void     ipw_scan_start(struct ieee80211com *);
 166 static void     ipw_scan_end(struct ieee80211com *);
 167 static void     ipw_set_channel(struct ieee80211com *);
 168 static void     ipw_scan_curchan(struct ieee80211_scan_state *,
 169                     unsigned long maxdwell);
 170 static void     ipw_scan_mindwell(struct ieee80211_scan_state *);
 171
 172 static int ipw_probe(device_t);
 173 static int ipw_attach(device_t);
 174 static int ipw_detach(device_t);
 175 static int ipw_shutdown(device_t);
 176 static int ipw_suspend(device_t);
 177 static int ipw_resume(device_t);
 178
 179 static device_method_t ipw_methods[] = {
 180         /* Device interface */
 181         DEVMETHOD(device_probe,         ipw_probe),
 182         DEVMETHOD(device_attach,        ipw_attach),
 183         DEVMETHOD(device_detach,        ipw_detach),
 184         DEVMETHOD(device_shutdown,      ipw_shutdown),
 185         DEVMETHOD(device_suspend,       ipw_suspend),
 186         DEVMETHOD(device_resume,        ipw_resume),
 187
 188         DEVMETHOD_END
 189 };
 190
 191 static driver_t ipw_driver = {
 192         "ipw",
 193         ipw_methods,
 194         sizeof (struct ipw_softc)
 195 };
 196
 197 static devclass_t ipw_devclass;
 198
 199 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, NULL, NULL);
 200
 201 MODULE_VERSION(ipw, 1);
 202
 203 static int
 204 ipw_probe(device_t dev)
 205 {
 206         const struct ipw_ident *ident;
 207
 208         for (ident = ipw_ident_table; ident->name != NULL; ident++) {
 209                 if (pci_get_vendor(dev) == ident->vendor &&
 210                     pci_get_device(dev) == ident->device) {
 211                         device_set_desc(dev, ident->name);
 212                         return (BUS_PROBE_DEFAULT);
 213                 }
 214         }
 215         return ENXIO;
 216 }
 217
 218 /* Base Address Register */
 219 static int
 220 ipw_attach(device_t dev)
 221 {
 222         struct ipw_softc *sc = device_get_softc(dev);
 223         struct ieee80211com *ic = &sc->sc_ic;
 224         struct ieee80211_channel *c;
 225         uint16_t val;
 226         int error, i;
 227
 228         sc->sc_dev = dev;
 229
 230         mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
 231             MTX_DEF | MTX_RECURSE);
 232         mbufq_init(&sc->sc_snd, ifqmaxlen);
 233         TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc);
 234         callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
 235
 236         pci_write_config(dev, 0x41, 0, 1);
 237
 238         /* enable bus-mastering */
 239         pci_enable_busmaster(dev);
 240
 241         i = PCIR_BAR(0);
 242         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
 243         if (sc->mem == NULL) {
 244                 device_printf(dev, "could not allocate memory resource\n");
 245                 goto fail;
 246         }
 247
 248         sc->sc_st = rman_get_bustag(sc->mem);
 249         sc->sc_sh = rman_get_bushandle(sc->mem);
 250
 251         i = 0;
 252         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
 253             RF_ACTIVE | RF_SHAREABLE);
 254         if (sc->irq == NULL) {
 255                 device_printf(dev, "could not allocate interrupt resource\n");
 256                 goto fail1;
 257         }
 258
 259         if (ipw_reset(sc) != 0) {
 260                 device_printf(dev, "could not reset adapter\n");
 261                 goto fail2;
 262         }
 263
 264         if (ipw_dma_alloc(sc) != 0) {
 265                 device_printf(dev, "could not allocate DMA resources\n");
 266                 goto fail2;
 267         }
 268
 269         ic->ic_softc = sc;
 270         ic->ic_name = device_get_nameunit(dev);
 271         ic->ic_opmode = IEEE80211_M_STA;
 272         ic->ic_phytype = IEEE80211_T_DS;
 273
 274         /* set device capabilities */
 275         ic->ic_caps =
 276                   IEEE80211_C_STA               /* station mode supported */
 277                 | IEEE80211_C_IBSS              /* IBSS mode supported */
 278                 | IEEE80211_C_MONITOR           /* monitor mode supported */
 279                 | IEEE80211_C_PMGT              /* power save supported */
 280                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 281                 | IEEE80211_C_WPA               /* 802.11i supported */
 282                 ;
 283
 284         /* read MAC address from EEPROM */
 285         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0);
 286         ic->ic_macaddr[0] = val >> 8;
 287         ic->ic_macaddr[1] = val & 0xff;
 288         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1);
 289         ic->ic_macaddr[2] = val >> 8;
 290         ic->ic_macaddr[3] = val & 0xff;
 291         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2);
 292         ic->ic_macaddr[4] = val >> 8;
 293         ic->ic_macaddr[5] = val & 0xff;
 294
 295         /* set supported .11b channels (read from EEPROM) */
 296         if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0)
 297                 val = 0x7ff; /* default to channels 1-11 */
 298         val <<= 1;
 299         for (i = 1; i < 16; i++) {
 300                 if (val & (1 << i)) {
 301                         c = &ic->ic_channels[ic->ic_nchans++];
 302                         c->ic_freq = ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 303                         c->ic_flags = IEEE80211_CHAN_B;
 304                         c->ic_ieee = i;
 305                 }
 306         }
 307
 308         /* check support for radio transmitter switch in EEPROM */
 309         if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8))
 310                 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH;
 311
 312         ieee80211_ifattach(ic);
 313         ic->ic_scan_start = ipw_scan_start;
 314         ic->ic_scan_end = ipw_scan_end;
 315         ic->ic_set_channel = ipw_set_channel;
 316         ic->ic_scan_curchan = ipw_scan_curchan;
 317         ic->ic_scan_mindwell = ipw_scan_mindwell;
 318         ic->ic_raw_xmit = ipw_raw_xmit;
 319         ic->ic_vap_create = ipw_vap_create;
 320         ic->ic_vap_delete = ipw_vap_delete;
 321         ic->ic_transmit = ipw_transmit;
 322         ic->ic_parent = ipw_parent;
 323
 324         ieee80211_radiotap_attach(ic,
 325             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 326                 IPW_TX_RADIOTAP_PRESENT,
 327             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 328                 IPW_RX_RADIOTAP_PRESENT);
 329
 330         /*
 331          * Add a few sysctl knobs.
 332          */
 333         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 334             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio",
 335             CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I",
 336             "radio transmitter switch state (0=off, 1=on)");
 337
 338         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 339             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
 340             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S",
 341             "statistics");
 342
 343         /*
 344          * Hook our interrupt after all initialization is complete.
 345          */
 346         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 347             NULL, ipw_intr, sc, &sc->sc_ih);
 348         if (error != 0) {
 349                 device_printf(dev, "could not set up interrupt\n");
 350                 goto fail3;
 351         }
 352
 353         if (bootverbose)
 354                 ieee80211_announce(ic);
 355
 356         return 0;
 357 fail3:
 358         ipw_release(sc);
 359 fail2:
 360         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 361 fail1:
 362         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
 363             sc->mem);
 364 fail:
 365         mtx_destroy(&sc->sc_mtx);
 366         return ENXIO;
 367 }
 368
 369 static int
 370 ipw_detach(device_t dev)
 371 {
 372         struct ipw_softc *sc = device_get_softc(dev);
 373         struct ieee80211com *ic = &sc->sc_ic;
 374
 375         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 376
 377         ieee80211_draintask(ic, &sc->sc_init_task);
 378         ipw_stop(sc);
 379
 380         ieee80211_ifdetach(ic);
 381
 382         callout_drain(&sc->sc_wdtimer);
 383         mbufq_drain(&sc->sc_snd);
 384
 385         ipw_release(sc);
 386
 387         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 388
 389         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
 390             sc->mem);
 391
 392         if (sc->sc_firmware != NULL) {
 393                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 394                 sc->sc_firmware = NULL;
 395         }
 396
 397         mtx_destroy(&sc->sc_mtx);
 398
 399         return 0;
 400 }
 401
 402 static struct ieee80211vap *
 403 ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 404     enum ieee80211_opmode opmode, int flags,
 405     const uint8_t bssid[IEEE80211_ADDR_LEN],
 406     const uint8_t mac[IEEE80211_ADDR_LEN])
 407 {
 408         struct ipw_softc *sc = ic->ic_softc;
 409         struct ipw_vap *ivp;
 410         struct ieee80211vap *vap;
 411         const struct firmware *fp;
 412         const struct ipw_firmware_hdr *hdr;
 413         const char *imagename;
 414
 415         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 416                 return NULL;
 417
 418         switch (opmode) {
 419         case IEEE80211_M_STA:
 420                 imagename = "ipw_bss";
 421                 break;
 422         case IEEE80211_M_IBSS:
 423                 imagename = "ipw_ibss";
 424                 break;
 425         case IEEE80211_M_MONITOR:
 426                 imagename = "ipw_monitor";
 427                 break;
 428         default:
 429                 return NULL;
 430         }
 431
 432         /*
 433          * Load firmware image using the firmware(9) subsystem.  Doing
 434          * this unlocked is ok since we're single-threaded by the
 435          * 802.11 layer.
 436          */
 437         if (sc->sc_firmware == NULL ||
 438             strcmp(sc->sc_firmware->name, imagename) != 0) {
 439                 if (sc->sc_firmware != NULL)
 440                         firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 441                 sc->sc_firmware = firmware_get(imagename);
 442         }
 443         if (sc->sc_firmware == NULL) {
 444                 device_printf(sc->sc_dev,
 445                     "could not load firmware image '%s'\n", imagename);
 446                 return NULL;
 447         }
 448         fp = sc->sc_firmware;
 449         if (fp->datasize < sizeof *hdr) {
 450                 device_printf(sc->sc_dev,
 451                     "firmware image too short %zu\n", fp->datasize);
 452                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 453                 sc->sc_firmware = NULL;
 454                 return NULL;
 455         }
 456         hdr = (const struct ipw_firmware_hdr *)fp->data;
 457         if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) +
 458             le32toh(hdr->ucodesz)) {
 459                 device_printf(sc->sc_dev,
 460                     "firmware image too short %zu\n", fp->datasize);
 461                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 462                 sc->sc_firmware = NULL;
 463                 return NULL;
 464         }
 465
 466         ivp = malloc(sizeof(struct ipw_vap), M_80211_VAP, M_WAITOK | M_ZERO);
 467         vap = &ivp->vap;
 468
 469         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
 470         /* override with driver methods */
 471         ivp->newstate = vap->iv_newstate;
 472         vap->iv_newstate = ipw_newstate;
 473
 474         /* complete setup */
 475         ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status,
 476             mac);
 477         ic->ic_opmode = opmode;
 478         return vap;
 479 }
 480
 481 static void
 482 ipw_vap_delete(struct ieee80211vap *vap)
 483 {
 484         struct ipw_vap *ivp = IPW_VAP(vap);
 485
 486         ieee80211_vap_detach(vap);
 487         free(ivp, M_80211_VAP);
 488 }
 489
 490 static int
 491 ipw_dma_alloc(struct ipw_softc *sc)
 492 {
 493         struct ipw_soft_bd *sbd;
 494         struct ipw_soft_hdr *shdr;
 495         struct ipw_soft_buf *sbuf;
 496         bus_addr_t physaddr;
 497         int error, i;
 498
 499         /*
 500          * Allocate parent DMA tag for subsequent allocations.
 501          */
 502         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 503             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 504             BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED,
 505             BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat);
 506         if (error != 0) {
 507                 device_printf(sc->sc_dev, "could not create parent DMA tag\n");
 508                 goto fail;
 509         }
 510
 511         /*
 512          * Allocate and map tx ring.
 513          */
 514         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 515             BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL,
 516             NULL, &sc->tbd_dmat);
 517         if (error != 0) {
 518                 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
 519                 goto fail;
 520         }
 521
 522         error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list,
 523             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map);
 524         if (error != 0) {
 525                 device_printf(sc->sc_dev,
 526                     "could not allocate tx ring DMA memory\n");
 527                 goto fail;
 528         }
 529
 530         error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list,
 531             IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0);
 532         if (error != 0) {
 533                 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n");
 534                 goto fail;
 535         }
 536
 537         /*
 538          * Allocate and map rx ring.
 539          */
 540         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 541             BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL,
 542             NULL, &sc->rbd_dmat);
 543         if (error != 0) {
 544                 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n");
 545                 goto fail;
 546         }
 547
 548         error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list,
 549             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map);
 550         if (error != 0) {
 551                 device_printf(sc->sc_dev,
 552                     "could not allocate rx ring DMA memory\n");
 553                 goto fail;
 554         }
 555
 556         error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list,
 557             IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0);
 558         if (error != 0) {
 559                 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n");
 560                 goto fail;
 561         }
 562
 563         /*
 564          * Allocate and map status ring.
 565          */
 566         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 567             BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0,
 568             NULL, NULL, &sc->status_dmat);
 569         if (error != 0) {
 570                 device_printf(sc->sc_dev,
 571                     "could not create status ring DMA tag\n");
 572                 goto fail;
 573         }
 574
 575         error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list,
 576             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map);
 577         if (error != 0) {
 578                 device_printf(sc->sc_dev,
 579                     "could not allocate status ring DMA memory\n");
 580                 goto fail;
 581         }
 582
 583         error = bus_dmamap_load(sc->status_dmat, sc->status_map,
 584             sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys,
 585             0);
 586         if (error != 0) {
 587                 device_printf(sc->sc_dev,
 588                     "could not map status ring DMA memory\n");
 589                 goto fail;
 590         }
 591
 592         /*
 593          * Allocate command DMA map.
 594          */
 595         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 596             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1,
 597             sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat);
 598         if (error != 0) {
 599                 device_printf(sc->sc_dev, "could not create command DMA tag\n");
 600                 goto fail;
 601         }
 602
 603         error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map);
 604         if (error != 0) {
 605                 device_printf(sc->sc_dev,
 606                     "could not create command DMA map\n");
 607                 goto fail;
 608         }
 609
 610         /*
 611          * Allocate headers DMA maps.
 612          */
 613         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 614             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1,
 615             sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat);
 616         if (error != 0) {
 617                 device_printf(sc->sc_dev, "could not create header DMA tag\n");
 618                 goto fail;
 619         }
 620
 621         SLIST_INIT(&sc->free_shdr);
 622         for (i = 0; i < IPW_NDATA; i++) {
 623                 shdr = &sc->shdr_list[i];
 624                 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map);
 625                 if (error != 0) {
 626                         device_printf(sc->sc_dev,
 627                             "could not create header DMA map\n");
 628                         goto fail;
 629                 }
 630                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
 631         }
 632
 633         /*
 634          * Allocate tx buffers DMA maps.
 635          */
 636         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 637             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0,
 638             NULL, NULL, &sc->txbuf_dmat);
 639         if (error != 0) {
 640                 device_printf(sc->sc_dev, "could not create tx DMA tag\n");
 641                 goto fail;
 642         }
 643
 644         SLIST_INIT(&sc->free_sbuf);
 645         for (i = 0; i < IPW_NDATA; i++) {
 646                 sbuf = &sc->tx_sbuf_list[i];
 647                 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map);
 648                 if (error != 0) {
 649                         device_printf(sc->sc_dev,
 650                             "could not create tx DMA map\n");
 651                         goto fail;
 652                 }
 653                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
 654         }
 655
 656         /*
 657          * Initialize tx ring.
 658          */
 659         for (i = 0; i < IPW_NTBD; i++) {
 660                 sbd = &sc->stbd_list[i];
 661                 sbd->bd = &sc->tbd_list[i];
 662                 sbd->type = IPW_SBD_TYPE_NOASSOC;
 663         }
 664
 665         /*
 666          * Pre-allocate rx buffers and DMA maps.
 667          */
 668         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 669             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
 670             NULL, &sc->rxbuf_dmat);
 671         if (error != 0) {
 672                 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
 673                 goto fail;
 674         }
 675
 676         for (i = 0; i < IPW_NRBD; i++) {
 677                 sbd = &sc->srbd_list[i];
 678                 sbuf = &sc->rx_sbuf_list[i];
 679                 sbd->bd = &sc->rbd_list[i];
 680
 681                 sbuf->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 682                 if (sbuf->m == NULL) {
 683                         device_printf(sc->sc_dev,
 684                             "could not allocate rx mbuf\n");
 685                         error = ENOMEM;
 686                         goto fail;
 687                 }
 688
 689                 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map);
 690                 if (error != 0) {
 691                         device_printf(sc->sc_dev,
 692                             "could not create rx DMA map\n");
 693                         goto fail;
 694                 }
 695
 696                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
 697                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
 698                     &physaddr, 0);
 699                 if (error != 0) {
 700                         device_printf(sc->sc_dev,
 701                             "could not map rx DMA memory\n");
 702                         goto fail;
 703                 }
 704
 705                 sbd->type = IPW_SBD_TYPE_DATA;
 706                 sbd->priv = sbuf;
 707                 sbd->bd->physaddr = htole32(physaddr);
 708                 sbd->bd->len = htole32(MCLBYTES);
 709         }
 710
 711         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
 712
 713         return 0;
 714
 715 fail:   ipw_release(sc);
 716         return error;
 717 }
 718
 719 static void
 720 ipw_release(struct ipw_softc *sc)
 721 {
 722         struct ipw_soft_buf *sbuf;
 723         int i;
 724
 725         if (sc->parent_dmat != NULL) {
 726                 bus_dma_tag_destroy(sc->parent_dmat);
 727         }
 728
 729         if (sc->tbd_dmat != NULL) {
 730                 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map);
 731                 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, sc->tbd_map);
 732                 bus_dma_tag_destroy(sc->tbd_dmat);
 733         }
 734
 735         if (sc->rbd_dmat != NULL) {
 736                 if (sc->rbd_list != NULL) {
 737                         bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map);
 738                         bus_dmamem_free(sc->rbd_dmat, sc->rbd_list,
 739                             sc->rbd_map);
 740                 }
 741                 bus_dma_tag_destroy(sc->rbd_dmat);
 742         }
 743
 744         if (sc->status_dmat != NULL) {
 745                 if (sc->status_list != NULL) {
 746                         bus_dmamap_unload(sc->status_dmat, sc->status_map);
 747                         bus_dmamem_free(sc->status_dmat, sc->status_list,
 748                             sc->status_map);
 749                 }
 750                 bus_dma_tag_destroy(sc->status_dmat);
 751         }
 752
 753         for (i = 0; i < IPW_NTBD; i++)
 754                 ipw_release_sbd(sc, &sc->stbd_list[i]);
 755
 756         if (sc->cmd_dmat != NULL) {
 757                 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map);
 758                 bus_dma_tag_destroy(sc->cmd_dmat);
 759         }
 760
 761         if (sc->hdr_dmat != NULL) {
 762                 for (i = 0; i < IPW_NDATA; i++)
 763                         bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map);
 764                 bus_dma_tag_destroy(sc->hdr_dmat);
 765         }
 766
 767         if (sc->txbuf_dmat != NULL) {
 768                 for (i = 0; i < IPW_NDATA; i++) {
 769                         bus_dmamap_destroy(sc->txbuf_dmat,
 770                             sc->tx_sbuf_list[i].map);
 771                 }
 772                 bus_dma_tag_destroy(sc->txbuf_dmat);
 773         }
 774
 775         if (sc->rxbuf_dmat != NULL) {
 776                 for (i = 0; i < IPW_NRBD; i++) {
 777                         sbuf = &sc->rx_sbuf_list[i];
 778                         if (sbuf->m != NULL) {
 779                                 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map,
 780                                     BUS_DMASYNC_POSTREAD);
 781                                 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
 782                                 m_freem(sbuf->m);
 783                         }
 784                         bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map);
 785                 }
 786                 bus_dma_tag_destroy(sc->rxbuf_dmat);
 787         }
 788 }
 789
 790 static int
 791 ipw_shutdown(device_t dev)
 792 {
 793         struct ipw_softc *sc = device_get_softc(dev);
 794
 795         ipw_stop(sc);
 796
 797         return 0;
 798 }
 799
 800 static int
 801 ipw_suspend(device_t dev)
 802 {
 803         struct ipw_softc *sc = device_get_softc(dev);
 804         struct ieee80211com *ic = &sc->sc_ic;
 805
 806         ieee80211_suspend_all(ic);
 807         return 0;
 808 }
 809
 810 static int
 811 ipw_resume(device_t dev)
 812 {
 813         struct ipw_softc *sc = device_get_softc(dev);
 814         struct ieee80211com *ic = &sc->sc_ic;
 815
 816         pci_write_config(dev, 0x41, 0, 1);
 817
 818         ieee80211_resume_all(ic);
 819         return 0;
 820 }
 821
 822 static int
 823 ipw_cvtrate(int ipwrate)
 824 {
 825         switch (ipwrate) {
 826         case IPW_RATE_DS1:      return 2;
 827         case IPW_RATE_DS2:      return 4;
 828         case IPW_RATE_DS5:      return 11;
 829         case IPW_RATE_DS11:     return 22;
 830         }
 831         return 0;
 832 }
 833
 834 /*
 835  * The firmware automatically adapts the transmit speed. We report its current
 836  * value here.
 837  */
 838 static void
 839 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 840 {
 841         struct ieee80211vap *vap = ifp->if_softc;
 842         struct ieee80211com *ic = vap->iv_ic;
 843         struct ipw_softc *sc = ic->ic_softc;
 844
 845         /* read current transmission rate from adapter */
 846         vap->iv_bss->ni_txrate = ipw_cvtrate(
 847             ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf);
 848         ieee80211_media_status(ifp, imr);
 849 }
 850
 851 static int
 852 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 853 {
 854         struct ipw_vap *ivp = IPW_VAP(vap);
 855         struct ieee80211com *ic = vap->iv_ic;
 856         struct ipw_softc *sc = ic->ic_softc;
 857         enum ieee80211_state ostate;
 858
 859         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
 860                 ieee80211_state_name[vap->iv_state],
 861                 ieee80211_state_name[nstate], sc->flags));
 862
 863         ostate = vap->iv_state;
 864         IEEE80211_UNLOCK(ic);
 865
 866         switch (nstate) {
 867         case IEEE80211_S_RUN:
 868                 if (ic->ic_opmode == IEEE80211_M_IBSS) {
 869                         /*
 870                          * XXX when joining an ibss network we are called
 871                          * with a SCAN -> RUN transition on scan complete.
 872                          * Use that to call ipw_assoc.  On completing the
 873                          * join we are then called again with an AUTH -> RUN
 874                          * transition and we want to do nothing.  This is
 875                          * all totally bogus and needs to be redone.
 876                          */
 877                         if (ostate == IEEE80211_S_SCAN)
 878                                 ipw_assoc(ic, vap);
 879                 }
 880                 break;
 881
 882         case IEEE80211_S_INIT:
 883                 if (sc->flags & IPW_FLAG_ASSOCIATED)
 884                         ipw_disassoc(ic, vap);
 885                 break;
 886
 887         case IEEE80211_S_AUTH:
 888                 /*
 889                  * Move to ASSOC state after the ipw_assoc() call.  Firmware
 890                  * takes care of authentication, after the call we'll receive
 891                  * only an assoc response which would otherwise be discared
 892                  * if we are still in AUTH state.
 893                  */
 894                 nstate = IEEE80211_S_ASSOC;
 895                 ipw_assoc(ic, vap);
 896                 break;
 897
 898         case IEEE80211_S_ASSOC:
 899                 /*
 900                  * If we are not transitioning from AUTH then resend the
 901                  * association request.
 902                  */
 903                 if (ostate != IEEE80211_S_AUTH)
 904                         ipw_assoc(ic, vap);
 905                 break;
 906
 907         default:
 908                 break;
 909         }
 910         IEEE80211_LOCK(ic);
 911         return ivp->newstate(vap, nstate, arg);
 912 }
 913
 914 /*
 915  * Read 16 bits at address 'addr' from the serial EEPROM.
 916  */
 917 static uint16_t
 918 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr)
 919 {
 920         uint32_t tmp;
 921         uint16_t val;
 922         int n;
 923
 924         /* clock C once before the first command */
 925         IPW_EEPROM_CTL(sc, 0);
 926         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 927         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 928         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 929
 930         /* write start bit (1) */
 931         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 932         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 933
 934         /* write READ opcode (10) */
 935         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 936         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 937         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 938         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 939
 940         /* write address A7-A0 */
 941         for (n = 7; n >= 0; n--) {
 942                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 943                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D));
 944                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 945                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C);
 946         }
 947
 948         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 949
 950         /* read data Q15-Q0 */
 951         val = 0;
 952         for (n = 15; n >= 0; n--) {
 953                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 954                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 955                 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL);
 956                 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n;
 957         }
 958
 959         IPW_EEPROM_CTL(sc, 0);
 960
 961         /* clear Chip Select and clock C */
 962         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 963         IPW_EEPROM_CTL(sc, 0);
 964         IPW_EEPROM_CTL(sc, IPW_EEPROM_C);
 965
 966         return le16toh(val);
 967 }
 968
 969 static void
 970 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
 971 {
 972         struct ipw_cmd *cmd;
 973
 974         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
 975
 976         cmd = mtod(sbuf->m, struct ipw_cmd *);
 977
 978         DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n",
 979             ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type),
 980             le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len),
 981             le32toh(cmd->status)));
 982
 983         sc->flags &= ~IPW_FLAG_BUSY;
 984         wakeup(sc);
 985 }
 986
 987 static void
 988 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
 989 {
 990 #define IEEESTATE(vap)  ieee80211_state_name[vap->iv_state]
 991         struct ieee80211com *ic = &sc->sc_ic;
 992         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
 993         uint32_t state;
 994
 995         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
 996
 997         state = le32toh(*mtod(sbuf->m, uint32_t *));
 998
 999         switch (state) {
1000         case IPW_STATE_ASSOCIATED:
1001                 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n",
1002                         IEEESTATE(vap), sc->flags));
1003                 /* XXX suppress state change in case the fw auto-associates */
1004                 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) {
1005                         DPRINTF(("Unexpected association (%s, flags 0x%x)\n",
1006                                 IEEESTATE(vap), sc->flags));
1007                         break;
1008                 }
1009                 sc->flags &= ~IPW_FLAG_ASSOCIATING;
1010                 sc->flags |= IPW_FLAG_ASSOCIATED;
1011                 break;
1012
1013         case IPW_STATE_SCANNING:
1014                 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n",
1015                         IEEESTATE(vap), sc->flags));
1016                 /*
1017                  * NB: Check driver state for association on assoc
1018                  * loss as the firmware will immediately start to
1019                  * scan and we would treat it as a beacon miss if
1020                  * we checked the 802.11 layer state.
1021                  */
1022                 if (sc->flags & IPW_FLAG_ASSOCIATED) {
1023                         IPW_UNLOCK(sc);
1024                         /* XXX probably need to issue disassoc to fw */
1025                         ieee80211_beacon_miss(ic);
1026                         IPW_LOCK(sc);
1027                 }
1028                 break;
1029
1030         case IPW_STATE_SCAN_COMPLETE:
1031                 /*
1032                  * XXX For some reason scan requests generate scan
1033                  * started + scan done events before any traffic is
1034                  * received (e.g. probe response frames).  We work
1035                  * around this by marking the HACK flag and skipping
1036                  * the first scan complete event.
1037                 */
1038                 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n",
1039                             IEEESTATE(vap), sc->flags));
1040                 if (sc->flags & IPW_FLAG_HACK) {
1041                         sc->flags &= ~IPW_FLAG_HACK;
1042                         break;
1043                 }
1044                 if (sc->flags & IPW_FLAG_SCANNING) {
1045                         IPW_UNLOCK(sc);
1046                         ieee80211_scan_done(vap);
1047                         IPW_LOCK(sc);
1048                         sc->flags &= ~IPW_FLAG_SCANNING;
1049                         sc->sc_scan_timer = 0;
1050                 }
1051                 break;
1052
1053         case IPW_STATE_ASSOCIATION_LOST:
1054                 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n",
1055                         IEEESTATE(vap), sc->flags));
1056                 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1057                 if (vap->iv_state == IEEE80211_S_RUN) {
1058                         IPW_UNLOCK(sc);
1059                         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1060                         IPW_LOCK(sc);
1061                 }
1062                 break;
1063
1064         case IPW_STATE_DISABLED:
1065                 /* XXX? is this right? */
1066                 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING |
1067                     IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1068                 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n",
1069                         IEEESTATE(vap), sc->flags));
1070                 break;
1071
1072         case IPW_STATE_RADIO_DISABLED:
1073                 device_printf(sc->sc_dev, "radio turned off\n");
1074                 ieee80211_notify_radio(ic, 0);
1075                 ipw_stop_locked(sc);
1076                 /* XXX start polling thread to detect radio on */
1077                 break;
1078
1079         default:
1080                 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n",
1081                         __func__, state, IEEESTATE(vap), sc->flags));
1082                 break;
1083         }
1084 #undef IEEESTATE
1085 }
1086
1087 /*
1088  * Set driver state for current channel.
1089  */
1090 static void
1091 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan)
1092 {
1093         struct ieee80211com *ic = &sc->sc_ic;
1094
1095         ic->ic_curchan = chan;
1096         ieee80211_radiotap_chan_change(ic);
1097 }
1098
1099 /*
1100  * XXX: Hack to set the current channel to the value advertised in beacons or
1101  * probe responses. Only used during AP detection.
1102  */
1103 static void
1104 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m)
1105 {
1106         struct ieee80211com *ic = &sc->sc_ic;
1107         struct ieee80211_channel *c;
1108         struct ieee80211_frame *wh;
1109         uint8_t subtype;
1110         uint8_t *frm, *efrm;
1111
1112         wh = mtod(m, struct ieee80211_frame *);
1113
1114         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
1115                 return;
1116
1117         subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1118
1119         if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1120             subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1121                 return;
1122
1123         /* XXX use ieee80211_parse_beacon */
1124         frm = (uint8_t *)(wh + 1);
1125         efrm = mtod(m, uint8_t *) + m->m_len;
1126
1127         frm += 12;      /* skip tstamp, bintval and capinfo fields */
1128         while (frm < efrm) {
1129                 if (*frm == IEEE80211_ELEMID_DSPARMS)
1130 #if IEEE80211_CHAN_MAX < 255
1131                 if (frm[2] <= IEEE80211_CHAN_MAX)
1132 #endif
1133                 {
1134                         DPRINTF(("Fixing channel to %d\n", frm[2]));
1135                         c = ieee80211_find_channel(ic,
1136                                 ieee80211_ieee2mhz(frm[2], 0),
1137                                 IEEE80211_CHAN_B);
1138                         if (c == NULL)
1139                                 c = &ic->ic_channels[0];
1140                         ipw_setcurchan(sc, c);
1141                 }
1142
1143                 frm += frm[1] + 2;
1144         }
1145 }
1146
1147 static void
1148 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status,
1149     struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf)
1150 {
1151         struct ieee80211com *ic = &sc->sc_ic;
1152         struct mbuf *mnew, *m;
1153         struct ieee80211_node *ni;
1154         bus_addr_t physaddr;
1155         int error;
1156         int8_t rssi, nf;
1157
1158         DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len),
1159             status->rssi));
1160
1161         if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) ||
1162             le32toh(status->len) > MCLBYTES)
1163                 return;
1164
1165         /*
1166          * Try to allocate a new mbuf for this ring element and load it before
1167          * processing the current mbuf. If the ring element cannot be loaded,
1168          * drop the received packet and reuse the old mbuf. In the unlikely
1169          * case that the old mbuf can't be reloaded either, explicitly panic.
1170          */
1171         mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1172         if (mnew == NULL) {
1173                 counter_u64_add(ic->ic_ierrors, 1);
1174                 return;
1175         }
1176
1177         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1178         bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
1179
1180         error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *),
1181             MCLBYTES, ipw_dma_map_addr, &physaddr, 0);
1182         if (error != 0) {
1183                 m_freem(mnew);
1184
1185                 /* try to reload the old mbuf */
1186                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
1187                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
1188                     &physaddr, 0);
1189                 if (error != 0) {
1190                         /* very unlikely that it will fail... */
1191                         panic("%s: could not load old rx mbuf",
1192                             device_get_name(sc->sc_dev));
1193                 }
1194                 counter_u64_add(ic->ic_ierrors, 1);
1195                 return;
1196         }
1197
1198         /*
1199          * New mbuf successfully loaded, update Rx ring and continue
1200          * processing.
1201          */
1202         m = sbuf->m;
1203         sbuf->m = mnew;
1204         sbd->bd->physaddr = htole32(physaddr);
1205         m->m_pkthdr.len = m->m_len = le32toh(status->len);
1206
1207         rssi = status->rssi + IPW_RSSI_TO_DBM;
1208         nf = -95;
1209         if (ieee80211_radiotap_active(ic)) {
1210                 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap;
1211
1212                 tap->wr_flags = 0;
1213                 tap->wr_antsignal = rssi;
1214                 tap->wr_antnoise = nf;
1215         }
1216
1217         if (sc->flags & IPW_FLAG_SCANNING)
1218                 ipw_fix_channel(sc, m);
1219
1220         IPW_UNLOCK(sc);
1221         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1222         if (ni != NULL) {
1223                 (void) ieee80211_input(ni, m, rssi - nf, nf);
1224                 ieee80211_free_node(ni);
1225         } else
1226                 (void) ieee80211_input_all(ic, m, rssi - nf, nf);
1227         IPW_LOCK(sc);
1228
1229         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1230 }
1231
1232 static void
1233 ipw_rx_intr(struct ipw_softc *sc)
1234 {
1235         struct ipw_status *status;
1236         struct ipw_soft_bd *sbd;
1237         struct ipw_soft_buf *sbuf;
1238         uint32_t r, i;
1239
1240         if (!(sc->flags & IPW_FLAG_FW_INITED))
1241                 return;
1242
1243         r = CSR_READ_4(sc, IPW_CSR_RX_READ);
1244
1245         bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD);
1246
1247         for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) {
1248                 status = &sc->status_list[i];
1249                 sbd = &sc->srbd_list[i];
1250                 sbuf = sbd->priv;
1251
1252                 switch (le16toh(status->code) & 0xf) {
1253                 case IPW_STATUS_CODE_COMMAND:
1254                         ipw_rx_cmd_intr(sc, sbuf);
1255                         break;
1256
1257                 case IPW_STATUS_CODE_NEWSTATE:
1258                         ipw_rx_newstate_intr(sc, sbuf);
1259                         break;
1260
1261                 case IPW_STATUS_CODE_DATA_802_3:
1262                 case IPW_STATUS_CODE_DATA_802_11:
1263                         ipw_rx_data_intr(sc, status, sbd, sbuf);
1264                         break;
1265
1266                 case IPW_STATUS_CODE_NOTIFICATION:
1267                         DPRINTFN(2, ("notification status, len %u flags 0x%x\n",
1268                             le32toh(status->len), status->flags));
1269                         /* XXX maybe drive state machine AUTH->ASSOC? */
1270                         break;
1271
1272                 default:
1273                         device_printf(sc->sc_dev, "unexpected status code %u\n",
1274                             le16toh(status->code));
1275                 }
1276
1277                 /* firmware was killed, stop processing received frames */
1278                 if (!(sc->flags & IPW_FLAG_FW_INITED))
1279                         return;
1280
1281                 sbd->bd->flags = 0;
1282         }
1283
1284         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1285
1286         /* kick the firmware */
1287         sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1;
1288         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
1289 }
1290
1291 static void
1292 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd)
1293 {
1294         struct ipw_soft_hdr *shdr;
1295         struct ipw_soft_buf *sbuf;
1296
1297         switch (sbd->type) {
1298         case IPW_SBD_TYPE_COMMAND:
1299                 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map,
1300                     BUS_DMASYNC_POSTWRITE);
1301                 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map);
1302                 break;
1303
1304         case IPW_SBD_TYPE_HEADER:
1305                 shdr = sbd->priv;
1306                 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE);
1307                 bus_dmamap_unload(sc->hdr_dmat, shdr->map);
1308                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
1309                 break;
1310
1311         case IPW_SBD_TYPE_DATA:
1312                 sbuf = sbd->priv;
1313                 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map,
1314                     BUS_DMASYNC_POSTWRITE);
1315                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1316                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
1317
1318                 if (sbuf->m->m_flags & M_TXCB)
1319                         ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/);
1320                 m_freem(sbuf->m);
1321                 ieee80211_free_node(sbuf->ni);
1322
1323                 sc->sc_tx_timer = 0;
1324                 break;
1325         }
1326
1327         sbd->type = IPW_SBD_TYPE_NOASSOC;
1328 }
1329
1330 static void
1331 ipw_tx_intr(struct ipw_softc *sc)
1332 {
1333         struct ipw_soft_bd *sbd;
1334         uint32_t r, i;
1335
1336         if (!(sc->flags & IPW_FLAG_FW_INITED))
1337                 return;
1338
1339         r = CSR_READ_4(sc, IPW_CSR_TX_READ);
1340
1341         for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) {
1342                 sbd = &sc->stbd_list[i];
1343                 ipw_release_sbd(sc, sbd);
1344                 sc->txfree++;
1345         }
1346
1347         /* remember what the firmware has processed */
1348         sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1;
1349
1350         ipw_start(sc);
1351 }
1352
1353 static void
1354 ipw_fatal_error_intr(struct ipw_softc *sc)
1355 {
1356         struct ieee80211com *ic = &sc->sc_ic;
1357         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1358
1359         device_printf(sc->sc_dev, "firmware error\n");
1360         if (vap != NULL) {
1361                 IPW_UNLOCK(sc);
1362                 ieee80211_cancel_scan(vap);
1363                 IPW_LOCK(sc);
1364         }
1365         ieee80211_runtask(ic, &sc->sc_init_task);
1366 }
1367
1368 static void
1369 ipw_intr(void *arg)
1370 {
1371         struct ipw_softc *sc = arg;
1372         uint32_t r;
1373
1374         IPW_LOCK(sc);
1375
1376         r = CSR_READ_4(sc, IPW_CSR_INTR);
1377         if (r == 0 || r == 0xffffffff)
1378                 goto done;
1379
1380         /* disable interrupts */
1381         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1382
1383         /* acknowledge all interrupts */
1384         CSR_WRITE_4(sc, IPW_CSR_INTR, r);
1385
1386         if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) {
1387                 ipw_fatal_error_intr(sc);
1388                 goto done;
1389         }
1390
1391         if (r & IPW_INTR_FW_INIT_DONE)
1392                 wakeup(sc);
1393
1394         if (r & IPW_INTR_RX_TRANSFER)
1395                 ipw_rx_intr(sc);
1396
1397         if (r & IPW_INTR_TX_TRANSFER)
1398                 ipw_tx_intr(sc);
1399
1400         /* re-enable interrupts */
1401         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1402 done:
1403         IPW_UNLOCK(sc);
1404 }
1405
1406 static void
1407 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1408 {
1409         if (error != 0)
1410                 return;
1411
1412         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1413
1414         *(bus_addr_t *)arg = segs[0].ds_addr;
1415 }
1416
1417 static const char *
1418 ipw_cmdname(int cmd)
1419 {
1420         static const struct {
1421                 int     cmd;
1422                 const char *name;
1423         } cmds[] = {
1424                 { IPW_CMD_ADD_MULTICAST,        "ADD_MULTICAST" },
1425                 { IPW_CMD_BROADCAST_SCAN,       "BROADCAST_SCAN" },
1426                 { IPW_CMD_DISABLE,              "DISABLE" },
1427                 { IPW_CMD_DISABLE_PHY,          "DISABLE_PHY" },
1428                 { IPW_CMD_ENABLE,               "ENABLE" },
1429                 { IPW_CMD_PREPARE_POWER_DOWN,   "PREPARE_POWER_DOWN" },
1430                 { IPW_CMD_SET_BASIC_TX_RATES,   "SET_BASIC_TX_RATES" },
1431                 { IPW_CMD_SET_BEACON_INTERVAL,  "SET_BEACON_INTERVAL" },
1432                 { IPW_CMD_SET_CHANNEL,          "SET_CHANNEL" },
1433                 { IPW_CMD_SET_CONFIGURATION,    "SET_CONFIGURATION" },
1434                 { IPW_CMD_SET_DESIRED_BSSID,    "SET_DESIRED_BSSID" },
1435                 { IPW_CMD_SET_ESSID,            "SET_ESSID" },
1436                 { IPW_CMD_SET_FRAG_THRESHOLD,   "SET_FRAG_THRESHOLD" },
1437                 { IPW_CMD_SET_MAC_ADDRESS,      "SET_MAC_ADDRESS" },
1438                 { IPW_CMD_SET_MANDATORY_BSSID,  "SET_MANDATORY_BSSID" },
1439                 { IPW_CMD_SET_MODE,             "SET_MODE" },
1440                 { IPW_CMD_SET_MSDU_TX_RATES,    "SET_MSDU_TX_RATES" },
1441                 { IPW_CMD_SET_POWER_MODE,       "SET_POWER_MODE" },
1442                 { IPW_CMD_SET_RTS_THRESHOLD,    "SET_RTS_THRESHOLD" },
1443                 { IPW_CMD_SET_SCAN_OPTIONS,     "SET_SCAN_OPTIONS" },
1444                 { IPW_CMD_SET_SECURITY_INFO,    "SET_SECURITY_INFO" },
1445                 { IPW_CMD_SET_TX_POWER_INDEX,   "SET_TX_POWER_INDEX" },
1446                 { IPW_CMD_SET_TX_RATES,         "SET_TX_RATES" },
1447                 { IPW_CMD_SET_WEP_FLAGS,        "SET_WEP_FLAGS" },
1448                 { IPW_CMD_SET_WEP_KEY,          "SET_WEP_KEY" },
1449                 { IPW_CMD_SET_WEP_KEY_INDEX,    "SET_WEP_KEY_INDEX" },
1450                 { IPW_CMD_SET_WPA_IE,           "SET_WPA_IE" },
1451
1452         };
1453         static char buf[12];
1454         int i;
1455
1456         for (i = 0; i < nitems(cmds); i++)
1457                 if (cmds[i].cmd == cmd)
1458                         return cmds[i].name;
1459         snprintf(buf, sizeof(buf), "%u", cmd);
1460         return buf;
1461 }
1462
1463 /*
1464  * Send a command to the firmware and wait for the acknowledgement.
1465  */
1466 static int
1467 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len)
1468 {
1469         struct ipw_soft_bd *sbd;
1470         bus_addr_t physaddr;
1471         int error;
1472
1473         IPW_LOCK_ASSERT(sc);
1474
1475         if (sc->flags & IPW_FLAG_BUSY) {
1476                 device_printf(sc->sc_dev, "%s: %s not sent, busy\n",
1477                         __func__, ipw_cmdname(type));
1478                 return EAGAIN;
1479         }
1480         sc->flags |= IPW_FLAG_BUSY;
1481
1482         sbd = &sc->stbd_list[sc->txcur];
1483
1484         error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd,
1485             sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0);
1486         if (error != 0) {
1487                 device_printf(sc->sc_dev, "could not map command DMA memory\n");
1488                 sc->flags &= ~IPW_FLAG_BUSY;
1489                 return error;
1490         }
1491
1492         sc->cmd.type = htole32(type);
1493         sc->cmd.subtype = 0;
1494         sc->cmd.len = htole32(len);
1495         sc->cmd.seq = 0;
1496         memcpy(sc->cmd.data, data, len);
1497
1498         sbd->type = IPW_SBD_TYPE_COMMAND;
1499         sbd->bd->physaddr = htole32(physaddr);
1500         sbd->bd->len = htole32(sizeof (struct ipw_cmd));
1501         sbd->bd->nfrag = 1;
1502         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND |
1503             IPW_BD_FLAG_TX_LAST_FRAGMENT;
1504
1505         bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE);
1506         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1507
1508 #ifdef IPW_DEBUG
1509         if (ipw_debug >= 4) {
1510                 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type,
1511                     0, 0, len);
1512                 /* Print the data buffer in the higher debug level */
1513                 if (ipw_debug >= 9 && len > 0) {
1514                         printf(" data: 0x");
1515                         for (int i = 1; i <= len; i++)
1516                                 printf("%1D", (u_char *)data + len - i, "");
1517                 }
1518                 printf("\n");
1519         }
1520 #endif
1521
1522         /* kick firmware */
1523         sc->txfree--;
1524         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1525         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1526
1527         /* wait at most one second for command to complete */
1528         error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz);
1529         if (error != 0) {
1530                 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n",
1531                     __func__, ipw_cmdname(type), error);
1532                 sc->flags &= ~IPW_FLAG_BUSY;
1533                 return (error);
1534         }
1535         return (0);
1536 }
1537
1538 static int
1539 ipw_tx_start(struct ipw_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1540 {
1541         struct ieee80211com *ic = &sc->sc_ic;
1542         struct ieee80211vap *vap = ni->ni_vap;
1543         struct ieee80211_frame *wh;
1544         struct ipw_soft_bd *sbd;
1545         struct ipw_soft_hdr *shdr;
1546         struct ipw_soft_buf *sbuf;
1547         struct ieee80211_key *k;
1548         struct mbuf *mnew;
1549         bus_dma_segment_t segs[IPW_MAX_NSEG];
1550         bus_addr_t physaddr;
1551         int nsegs, error, i;
1552
1553         wh = mtod(m0, struct ieee80211_frame *);
1554
1555         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1556                 k = ieee80211_crypto_encap(ni, m0);
1557                 if (k == NULL) {
1558                         m_freem(m0);
1559                         return ENOBUFS;
1560                 }
1561                 /* packet header may have moved, reset our local pointer */
1562                 wh = mtod(m0, struct ieee80211_frame *);
1563         }
1564
1565         if (ieee80211_radiotap_active_vap(vap)) {
1566                 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap;
1567
1568                 tap->wt_flags = 0;
1569
1570                 ieee80211_radiotap_tx(vap, m0);
1571         }
1572
1573         shdr = SLIST_FIRST(&sc->free_shdr);
1574         sbuf = SLIST_FIRST(&sc->free_sbuf);
1575         KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool"));
1576
1577         shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND);
1578         shdr->hdr.subtype = 0;
1579         shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) ? 1 : 0;
1580         shdr->hdr.encrypt = 0;
1581         shdr->hdr.keyidx = 0;
1582         shdr->hdr.keysz = 0;
1583         shdr->hdr.fragmentsz = 0;
1584         IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2);
1585         if (ic->ic_opmode == IEEE80211_M_STA)
1586                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3);
1587         else
1588                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1);
1589
1590         /* trim IEEE802.11 header */
1591         m_adj(m0, sizeof (struct ieee80211_frame));
1592
1593         error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs,
1594             &nsegs, 0);
1595         if (error != 0 && error != EFBIG) {
1596                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1597                     error);
1598                 m_freem(m0);
1599                 return error;
1600         }
1601         if (error != 0) {
1602                 mnew = m_defrag(m0, M_NOWAIT);
1603                 if (mnew == NULL) {
1604                         device_printf(sc->sc_dev,
1605                             "could not defragment mbuf\n");
1606                         m_freem(m0);
1607                         return ENOBUFS;
1608                 }
1609                 m0 = mnew;
1610
1611                 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0,
1612                     segs, &nsegs, 0);
1613                 if (error != 0) {
1614                         device_printf(sc->sc_dev,
1615                             "could not map mbuf (error %d)\n", error);
1616                         m_freem(m0);
1617                         return error;
1618                 }
1619         }
1620
1621         error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr,
1622             sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0);
1623         if (error != 0) {
1624                 device_printf(sc->sc_dev, "could not map header DMA memory\n");
1625                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1626                 m_freem(m0);
1627                 return error;
1628         }
1629
1630         SLIST_REMOVE_HEAD(&sc->free_sbuf, next);
1631         SLIST_REMOVE_HEAD(&sc->free_shdr, next);
1632
1633         sbd = &sc->stbd_list[sc->txcur];
1634         sbd->type = IPW_SBD_TYPE_HEADER;
1635         sbd->priv = shdr;
1636         sbd->bd->physaddr = htole32(physaddr);
1637         sbd->bd->len = htole32(sizeof (struct ipw_hdr));
1638         sbd->bd->nfrag = 1 + nsegs;
1639         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 |
1640             IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1641
1642         DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n",
1643             shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted,
1644             shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr,
1645             ":"));
1646
1647         sc->txfree--;
1648         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1649
1650         sbuf->m = m0;
1651         sbuf->ni = ni;
1652
1653         for (i = 0; i < nsegs; i++) {
1654                 sbd = &sc->stbd_list[sc->txcur];
1655
1656                 sbd->bd->physaddr = htole32(segs[i].ds_addr);
1657                 sbd->bd->len = htole32(segs[i].ds_len);
1658                 sbd->bd->nfrag = 0;
1659                 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3;
1660                 if (i == nsegs - 1) {
1661                         sbd->type = IPW_SBD_TYPE_DATA;
1662                         sbd->priv = sbuf;
1663                         sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT;
1664                 } else {
1665                         sbd->type = IPW_SBD_TYPE_NOASSOC;
1666                         sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1667                 }
1668
1669                 DPRINTFN(5, ("sending fragment (%d)\n", i));
1670
1671                 sc->txfree--;
1672                 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1673         }
1674
1675         bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE);
1676         bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE);
1677         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1678
1679         /* kick firmware */
1680         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1681
1682         return 0;
1683 }
1684
1685 static int
1686 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1687         const struct ieee80211_bpf_params *params)
1688 {
1689         /* no support; just discard */
1690         m_freem(m);
1691         ieee80211_free_node(ni);
1692         return 0;
1693 }
1694
1695 static int
1696 ipw_transmit(struct ieee80211com *ic, struct mbuf *m)
1697 {
1698         struct ipw_softc *sc = ic->ic_softc;
1699         int error;
1700
1701         IPW_LOCK(sc);
1702         if ((sc->flags & IPW_FLAG_RUNNING) == 0) {
1703                 IPW_UNLOCK(sc);
1704                 return (ENXIO);
1705         }
1706         error = mbufq_enqueue(&sc->sc_snd, m);
1707         if (error) {
1708                 IPW_UNLOCK(sc);
1709                 return (error);
1710         }
1711         ipw_start(sc);
1712         IPW_UNLOCK(sc);
1713         return (0);
1714 }
1715
1716 static void
1717 ipw_start(struct ipw_softc *sc)
1718 {
1719         struct ieee80211_node *ni;
1720         struct mbuf *m;
1721
1722         IPW_LOCK_ASSERT(sc);
1723
1724         while (sc->txfree < 1 + IPW_MAX_NSEG &&
1725             (m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
1726                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1727                 if (ipw_tx_start(sc, m, ni) != 0) {
1728                         if_inc_counter(ni->ni_vap->iv_ifp,
1729                             IFCOUNTER_OERRORS, 1);
1730                         ieee80211_free_node(ni);
1731                         break;
1732                 }
1733                 /* start watchdog timer */
1734                 sc->sc_tx_timer = 5;
1735         }
1736 }
1737
1738 static void
1739 ipw_watchdog(void *arg)
1740 {
1741         struct ipw_softc *sc = arg;
1742         struct ieee80211com *ic = &sc->sc_ic;
1743
1744         IPW_LOCK_ASSERT(sc);
1745
1746         if (sc->sc_tx_timer > 0) {
1747                 if (--sc->sc_tx_timer == 0) {
1748                         device_printf(sc->sc_dev, "device timeout\n");
1749                         counter_u64_add(ic->ic_oerrors, 1);
1750                         taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1751                 }
1752         }
1753         if (sc->sc_scan_timer > 0) {
1754                 if (--sc->sc_scan_timer == 0) {
1755                         DPRINTFN(3, ("Scan timeout\n"));
1756                         /* End the scan */
1757                         if (sc->flags & IPW_FLAG_SCANNING) {
1758                                 IPW_UNLOCK(sc);
1759                                 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps));
1760                                 IPW_LOCK(sc);
1761                                 sc->flags &= ~IPW_FLAG_SCANNING;
1762                         }
1763                 }
1764         }
1765         if (sc->flags & IPW_FLAG_RUNNING)
1766                 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
1767 }
1768
1769 static void
1770 ipw_parent(struct ieee80211com *ic)
1771 {
1772         struct ipw_softc *sc = ic->ic_softc;
1773         int startall = 0;
1774
1775         IPW_LOCK(sc);
1776         if (ic->ic_nrunning > 0) {
1777                 if (!(sc->flags & IPW_FLAG_RUNNING)) {
1778                         ipw_init_locked(sc);
1779                         startall = 1;
1780                 }
1781         } else if (sc->flags & IPW_FLAG_RUNNING)
1782                 ipw_stop_locked(sc);
1783         IPW_UNLOCK(sc);
1784         if (startall)
1785                 ieee80211_start_all(ic);
1786 }
1787
1788 static void
1789 ipw_stop_master(struct ipw_softc *sc)
1790 {
1791         uint32_t tmp;
1792         int ntries;
1793
1794         /* disable interrupts */
1795         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1796
1797         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER);
1798         for (ntries = 0; ntries < 50; ntries++) {
1799                 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED)
1800                         break;
1801                 DELAY(10);
1802         }
1803         if (ntries == 50)
1804                 device_printf(sc->sc_dev, "timeout waiting for master\n");
1805
1806         tmp = CSR_READ_4(sc, IPW_CSR_RST);
1807         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET);
1808
1809         /* Clear all flags except the following */
1810         sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH;
1811 }
1812
1813 static int
1814 ipw_reset(struct ipw_softc *sc)
1815 {
1816         uint32_t tmp;
1817         int ntries;
1818
1819         ipw_stop_master(sc);
1820
1821         /* move adapter to D0 state */
1822         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1823         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1824
1825         /* wait for clock stabilization */
1826         for (ntries = 0; ntries < 1000; ntries++) {
1827                 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY)
1828                         break;
1829                 DELAY(200);
1830         }
1831         if (ntries == 1000)
1832                 return EIO;
1833
1834         tmp =  CSR_READ_4(sc, IPW_CSR_RST);
1835         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET);
1836
1837         DELAY(10);
1838
1839         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1840         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1841
1842         return 0;
1843 }
1844
1845 static int
1846 ipw_waitfordisable(struct ipw_softc *sc, int waitfor)
1847 {
1848         int ms = hz < 1000 ? 1 : hz/10;
1849         int i, error;
1850
1851         for (i = 0; i < 100; i++) {
1852                 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor)
1853                         return 0;
1854                 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms);
1855                 if (error == 0 || error != EWOULDBLOCK)
1856                         return 0;
1857         }
1858         DPRINTF(("%s: timeout waiting for %s\n",
1859                 __func__, waitfor ? "disable" : "enable"));
1860         return ETIMEDOUT;
1861 }
1862
1863 static int
1864 ipw_enable(struct ipw_softc *sc)
1865 {
1866         int error;
1867
1868         if ((sc->flags & IPW_FLAG_ENABLED) == 0) {
1869                 DPRINTF(("Enable adapter\n"));
1870                 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
1871                 if (error != 0)
1872                         return error;
1873                 error = ipw_waitfordisable(sc, 0);
1874                 if (error != 0)
1875                         return error;
1876                 sc->flags |= IPW_FLAG_ENABLED;
1877         }
1878         return 0;
1879 }
1880
1881 static int
1882 ipw_disable(struct ipw_softc *sc)
1883 {
1884         int error;
1885
1886         if (sc->flags & IPW_FLAG_ENABLED) {
1887                 DPRINTF(("Disable adapter\n"));
1888                 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0);
1889                 if (error != 0)
1890                         return error;
1891                 error = ipw_waitfordisable(sc, 1);
1892                 if (error != 0)
1893                         return error;
1894                 sc->flags &= ~IPW_FLAG_ENABLED;
1895         }
1896         return 0;
1897 }
1898
1899 /*
1900  * Upload the microcode to the device.
1901  */
1902 static int
1903 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size)
1904 {
1905         int ntries;
1906
1907         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
1908         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1909
1910         MEM_WRITE_2(sc, 0x220000, 0x0703);
1911         MEM_WRITE_2(sc, 0x220000, 0x0707);
1912
1913         MEM_WRITE_1(sc, 0x210014, 0x72);
1914         MEM_WRITE_1(sc, 0x210014, 0x72);
1915
1916         MEM_WRITE_1(sc, 0x210000, 0x40);
1917         MEM_WRITE_1(sc, 0x210000, 0x00);
1918         MEM_WRITE_1(sc, 0x210000, 0x40);
1919
1920         MEM_WRITE_MULTI_1(sc, 0x210010, uc, size);
1921
1922         MEM_WRITE_1(sc, 0x210000, 0x00);
1923         MEM_WRITE_1(sc, 0x210000, 0x00);
1924         MEM_WRITE_1(sc, 0x210000, 0x80);
1925
1926         MEM_WRITE_2(sc, 0x220000, 0x0703);
1927         MEM_WRITE_2(sc, 0x220000, 0x0707);
1928
1929         MEM_WRITE_1(sc, 0x210014, 0x72);
1930         MEM_WRITE_1(sc, 0x210014, 0x72);
1931
1932         MEM_WRITE_1(sc, 0x210000, 0x00);
1933         MEM_WRITE_1(sc, 0x210000, 0x80);
1934
1935         for (ntries = 0; ntries < 10; ntries++) {
1936                 if (MEM_READ_1(sc, 0x210000) & 1)
1937                         break;
1938                 DELAY(10);
1939         }
1940         if (ntries == 10) {
1941                 device_printf(sc->sc_dev,
1942                     "timeout waiting for ucode to initialize\n");
1943                 return EIO;
1944         }
1945
1946         MEM_WRITE_4(sc, 0x3000e0, 0);
1947
1948         return 0;
1949 }
1950
1951 /* set of macros to handle unaligned little endian data in firmware image */
1952 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
1953 #define GETLE16(p) ((p)[0] | (p)[1] << 8)
1954 static int
1955 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size)
1956 {
1957         const uint8_t *p, *end;
1958         uint32_t tmp, dst;
1959         uint16_t len;
1960         int error;
1961
1962         p = fw;
1963         end = fw + size;
1964         while (p < end) {
1965                 dst = GETLE32(p); p += 4;
1966                 len = GETLE16(p); p += 2;
1967
1968                 ipw_write_mem_1(sc, dst, p, len);
1969                 p += len;
1970         }
1971
1972         CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK |
1973             IPW_IO_LED_OFF);
1974
1975         /* enable interrupts */
1976         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1977
1978         /* kick the firmware */
1979         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1980
1981         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1982         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY);
1983
1984         /* wait at most one second for firmware initialization to complete */
1985         if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) {
1986                 device_printf(sc->sc_dev, "timeout waiting for firmware "
1987                     "initialization to complete\n");
1988                 return error;
1989         }
1990
1991         tmp = CSR_READ_4(sc, IPW_CSR_IO);
1992         CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK |
1993             IPW_IO_GPIO3_MASK);
1994
1995         return 0;
1996 }
1997
1998 static int
1999 ipw_setwepkeys(struct ipw_softc *sc)
2000 {
2001         struct ieee80211com *ic = &sc->sc_ic;
2002         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2003         struct ipw_wep_key wepkey;
2004         struct ieee80211_key *wk;
2005         int error, i;
2006
2007         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2008                 wk = &vap->iv_nw_keys[i];
2009
2010                 if (wk->wk_cipher == NULL ||
2011                     wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP)
2012                         continue;
2013
2014                 wepkey.idx = i;
2015                 wepkey.len = wk->wk_keylen;
2016                 memset(wepkey.key, 0, sizeof wepkey.key);
2017                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2018                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2019                     wepkey.len));
2020                 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey,
2021                     sizeof wepkey);
2022                 if (error != 0)
2023                         return error;
2024         }
2025         return 0;
2026 }
2027
2028 static int
2029 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen)
2030 {
2031         struct ipw_wpa_ie wpaie;
2032
2033         memset(&wpaie, 0, sizeof(wpaie));
2034         wpaie.len = htole32(ielen);
2035         /* XXX verify length */
2036         memcpy(&wpaie.ie, ie, ielen);
2037         DPRINTF(("Setting WPA IE\n"));
2038         return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie));
2039 }
2040
2041 static int
2042 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid)
2043 {
2044         static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
2045
2046         if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) {
2047                 DPRINTF(("Setting mandatory BSSID to null\n"));
2048                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0);
2049         } else {
2050                 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":"));
2051                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID,
2052                         bssid, IEEE80211_ADDR_LEN);
2053         }
2054 }
2055
2056 static int
2057 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen)
2058 {
2059         if (ssidlen == 0) {
2060                 /*
2061                  * A bug in the firmware breaks the ``don't associate''
2062                  * bit in the scan options command.  To compensate for
2063                  * this install a bogus ssid when no ssid is specified
2064                  * so the firmware won't try to associate.
2065                  */
2066                 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n"));
2067                 return ipw_cmd(sc, IPW_CMD_SET_ESSID,
2068                         "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27"
2069                         "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31"
2070                         "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b"
2071                         "\x3c\x3d", IEEE80211_NWID_LEN);
2072         } else {
2073 #ifdef IPW_DEBUG
2074                 if (ipw_debug > 0) {
2075                         printf("Setting ESSID to ");
2076                         ieee80211_print_essid(ssid, ssidlen);
2077                         printf("\n");
2078                 }
2079 #endif
2080                 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen);
2081         }
2082 }
2083
2084 static int
2085 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags)
2086 {
2087         struct ipw_scan_options opts;
2088
2089         DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags));
2090         opts.channels = htole32(chanmask);
2091         opts.flags = htole32(flags);
2092         return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts));
2093 }
2094
2095 static int
2096 ipw_scan(struct ipw_softc *sc)
2097 {
2098         uint32_t params;
2099         int error;
2100
2101         DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags));
2102
2103         if (sc->flags & IPW_FLAG_SCANNING)
2104                 return (EBUSY);
2105         sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK;
2106
2107         /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */
2108         error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE);
2109         if (error != 0)
2110                 goto done;
2111
2112         /*
2113          * Setup null/bogus ssid so firmware doesn't use any previous
2114          * ssid to try and associate.  This is because the ``don't
2115          * associate'' option bit is broken (sigh).
2116          */
2117         error = ipw_setssid(sc, NULL, 0);
2118         if (error != 0)
2119                 goto done;
2120
2121         /*
2122          * NB: the adapter may be disabled on association lost;
2123          *     if so just re-enable it to kick off scanning.
2124          */
2125         DPRINTF(("Starting scan\n"));
2126         sc->sc_scan_timer = 3;
2127         if (sc->flags & IPW_FLAG_ENABLED) {
2128                 params = 0;                             /* XXX? */
2129                 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN,
2130                                 &params, sizeof(params));
2131         } else
2132                 error = ipw_enable(sc);
2133 done:
2134         if (error != 0) {
2135                 DPRINTF(("Scan failed\n"));
2136                 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK);
2137         }
2138         return (error);
2139 }
2140
2141 static int
2142 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan)
2143 {
2144         struct ieee80211com *ic = &sc->sc_ic;
2145         uint32_t data;
2146         int error;
2147
2148         data = htole32(ieee80211_chan2ieee(ic, chan));
2149         DPRINTF(("Setting channel to %u\n", le32toh(data)));
2150         error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data);
2151         if (error == 0)
2152                 ipw_setcurchan(sc, chan);
2153         return error;
2154 }
2155
2156 static void
2157 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2158 {
2159         struct ipw_softc *sc = ic->ic_softc;
2160         struct ieee80211_node *ni = vap->iv_bss;
2161         struct ipw_security security;
2162         uint32_t data;
2163         int error;
2164
2165         IPW_LOCK(sc);
2166         error = ipw_disable(sc);
2167         if (error != 0)
2168                 goto done;
2169
2170         memset(&security, 0, sizeof security);
2171         security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ?
2172             IPW_AUTH_SHARED : IPW_AUTH_OPEN;
2173         security.ciphers = htole32(IPW_CIPHER_NONE);
2174         DPRINTF(("Setting authmode to %u\n", security.authmode));
2175         error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security,
2176             sizeof security);
2177         if (error != 0)
2178                 goto done;
2179
2180         data = htole32(vap->iv_rtsthreshold);
2181         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2182         error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2183         if (error != 0)
2184                 goto done;
2185
2186         data = htole32(vap->iv_fragthreshold);
2187         DPRINTF(("Setting frag threshold to %u\n", le32toh(data)));
2188         error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2189         if (error != 0)
2190                 goto done;
2191
2192         if (vap->iv_flags & IEEE80211_F_PRIVACY) {
2193                 error = ipw_setwepkeys(sc);
2194                 if (error != 0)
2195                         goto done;
2196
2197                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) {
2198                         data = htole32(vap->iv_def_txkey);
2199                         DPRINTF(("Setting wep tx key index to %u\n",
2200                                 le32toh(data)));
2201                         error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data,
2202                             sizeof data);
2203                         if (error != 0)
2204                                 goto done;
2205                 }
2206         }
2207
2208         data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0);
2209         DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data)));
2210         error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data);
2211         if (error != 0)
2212                 goto done;
2213
2214         error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen);
2215         if (error != 0)
2216                 goto done;
2217
2218         error = ipw_setbssid(sc, ni->ni_bssid);
2219         if (error != 0)
2220                 goto done;
2221
2222         if (vap->iv_appie_wpa != NULL) {
2223                 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2224                 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len);
2225                 if (error != 0)
2226                         goto done;
2227         }
2228         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2229                 error = ipw_setchannel(sc, ni->ni_chan);
2230                 if (error != 0)
2231                         goto done;
2232         }
2233
2234         /* lock scan to ap's channel and enable associate */
2235         error = ipw_setscanopts(sc,
2236             1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0);
2237         if (error != 0)
2238                 goto done;
2239
2240         error = ipw_enable(sc);         /* finally, enable adapter */
2241         if (error == 0)
2242                 sc->flags |= IPW_FLAG_ASSOCIATING;
2243 done:
2244         IPW_UNLOCK(sc);
2245 }
2246
2247 static void
2248 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2249 {
2250         struct ieee80211_node *ni = vap->iv_bss;
2251         struct ipw_softc *sc = ic->ic_softc;
2252
2253         IPW_LOCK(sc);
2254         DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":"));
2255         /*
2256          * NB: don't try to do this if ipw_stop_master has
2257          *     shutdown the firmware and disabled interrupts.
2258          */
2259         if (sc->flags & IPW_FLAG_FW_INITED) {
2260                 sc->flags &= ~IPW_FLAG_ASSOCIATED;
2261                 /*
2262                  * NB: firmware currently ignores bssid parameter, but
2263                  *     supply it in case this changes (follow linux driver).
2264                  */
2265                 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE,
2266                         ni->ni_bssid, IEEE80211_ADDR_LEN);
2267         }
2268         IPW_UNLOCK(sc);
2269 }
2270
2271 /*
2272  * Handler for sc_init_task.  This is a simple wrapper around ipw_init().
2273  * It is called on firmware panics or on watchdog timeouts.
2274  */
2275 static void
2276 ipw_init_task(void *context, int pending)
2277 {
2278         ipw_init(context);
2279 }
2280
2281 static void
2282 ipw_init(void *priv)
2283 {
2284         struct ipw_softc *sc = priv;
2285         struct ieee80211com *ic = &sc->sc_ic;
2286
2287         IPW_LOCK(sc);
2288         ipw_init_locked(sc);
2289         IPW_UNLOCK(sc);
2290
2291         if (sc->flags & IPW_FLAG_RUNNING)
2292                 ieee80211_start_all(ic);                /* start all vap's */
2293 }
2294
2295 static void
2296 ipw_init_locked(struct ipw_softc *sc)
2297 {
2298         struct ieee80211com *ic = &sc->sc_ic;
2299         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2300         const struct firmware *fp;
2301         const struct ipw_firmware_hdr *hdr;
2302         const char *fw;
2303
2304         IPW_LOCK_ASSERT(sc);
2305
2306         DPRINTF(("%s: state %s flags 0x%x\n", __func__,
2307                 ieee80211_state_name[vap->iv_state], sc->flags));
2308
2309         /*
2310          * Avoid re-entrant calls.  We need to release the mutex in ipw_init()
2311          * when loading the firmware and we don't want to be called during this
2312          * operation.
2313          */
2314         if (sc->flags & IPW_FLAG_INIT_LOCKED)
2315                 return;
2316         sc->flags |= IPW_FLAG_INIT_LOCKED;
2317
2318         ipw_stop_locked(sc);
2319
2320         if (ipw_reset(sc) != 0) {
2321                 device_printf(sc->sc_dev, "could not reset adapter\n");
2322                 goto fail;
2323         }
2324
2325         if (sc->sc_firmware == NULL) {
2326                 device_printf(sc->sc_dev, "no firmware\n");
2327                 goto fail;
2328         }
2329         /* NB: consistency already checked on load */
2330         fp = sc->sc_firmware;
2331         hdr = (const struct ipw_firmware_hdr *)fp->data;
2332
2333         DPRINTF(("Loading firmware image '%s'\n", fp->name));
2334         fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz);
2335         if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) {
2336                 device_printf(sc->sc_dev, "could not load microcode\n");
2337                 goto fail;
2338         }
2339
2340         ipw_stop_master(sc);
2341
2342         /*
2343          * Setup tx, rx and status rings.
2344          */
2345         sc->txold = IPW_NTBD - 1;
2346         sc->txcur = 0;
2347         sc->txfree = IPW_NTBD - 2;
2348         sc->rxcur = IPW_NRBD - 1;
2349
2350         CSR_WRITE_4(sc, IPW_CSR_TX_BASE,  sc->tbd_phys);
2351         CSR_WRITE_4(sc, IPW_CSR_TX_SIZE,  IPW_NTBD);
2352         CSR_WRITE_4(sc, IPW_CSR_TX_READ,  0);
2353         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
2354
2355         CSR_WRITE_4(sc, IPW_CSR_RX_BASE,  sc->rbd_phys);
2356         CSR_WRITE_4(sc, IPW_CSR_RX_SIZE,  IPW_NRBD);
2357         CSR_WRITE_4(sc, IPW_CSR_RX_READ,  0);
2358         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
2359
2360         CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys);
2361
2362         fw = (const char *)fp->data + sizeof *hdr;
2363         if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) {
2364                 device_printf(sc->sc_dev, "could not load firmware\n");
2365                 goto fail;
2366         }
2367
2368         sc->flags |= IPW_FLAG_FW_INITED;
2369
2370         /* retrieve information tables base addresses */
2371         sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE);
2372         sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE);
2373
2374         ipw_write_table1(sc, IPW_INFO_LOCK, 0);
2375
2376         if (ipw_config(sc) != 0) {
2377                 device_printf(sc->sc_dev, "device configuration failed\n");
2378                 goto fail;
2379         }
2380
2381         callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
2382         sc->flags |= IPW_FLAG_RUNNING;
2383         sc->flags &= ~IPW_FLAG_INIT_LOCKED;
2384         return;
2385
2386 fail:
2387         ipw_stop_locked(sc);
2388         sc->flags &= ~IPW_FLAG_INIT_LOCKED;
2389 }
2390
2391 static int
2392 ipw_config(struct ipw_softc *sc)
2393 {
2394         struct ieee80211com *ic = &sc->sc_ic;
2395         struct ipw_configuration config;
2396         uint32_t data;
2397         int error;
2398
2399         error = ipw_disable(sc);
2400         if (error != 0)
2401                 return error;
2402
2403         switch (ic->ic_opmode) {
2404         case IEEE80211_M_STA:
2405         case IEEE80211_M_HOSTAP:
2406         case IEEE80211_M_WDS:           /* XXX */
2407                 data = htole32(IPW_MODE_BSS);
2408                 break;
2409         case IEEE80211_M_IBSS:
2410         case IEEE80211_M_AHDEMO:
2411                 data = htole32(IPW_MODE_IBSS);
2412                 break;
2413         case IEEE80211_M_MONITOR:
2414                 data = htole32(IPW_MODE_MONITOR);
2415                 break;
2416         default:
2417                 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
2418                 return EINVAL;
2419         }
2420         DPRINTF(("Setting mode to %u\n", le32toh(data)));
2421         error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data);
2422         if (error != 0)
2423                 return error;
2424
2425         if (ic->ic_opmode == IEEE80211_M_IBSS ||
2426             ic->ic_opmode == IEEE80211_M_MONITOR) {
2427                 error = ipw_setchannel(sc, ic->ic_curchan);
2428                 if (error != 0)
2429                         return error;
2430         }
2431
2432         if (ic->ic_opmode == IEEE80211_M_MONITOR)
2433                 return ipw_enable(sc);
2434
2435         config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK |
2436             IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE);
2437         if (ic->ic_opmode == IEEE80211_M_IBSS)
2438                 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START);
2439         if (ic->ic_promisc > 0)
2440                 config.flags |= htole32(IPW_CFG_PROMISCUOUS);
2441         config.bss_chan = htole32(0x3fff); /* channels 1-14 */
2442         config.ibss_chan = htole32(0x7ff); /* channels 1-11 */
2443         DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags)));
2444         error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config);
2445         if (error != 0)
2446                 return error;
2447
2448         data = htole32(0xf); /* 1, 2, 5.5, 11 */
2449         DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data)));
2450         error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data);
2451         if (error != 0)
2452                 return error;
2453
2454         /* Use the same rate set */
2455         DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data)));
2456         error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data);
2457         if (error != 0)
2458                 return error;
2459
2460         /* Use the same rate set */
2461         DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data)));
2462         error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data);
2463         if (error != 0)
2464                 return error;
2465
2466         data = htole32(IPW_POWER_MODE_CAM);
2467         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2468         error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data);
2469         if (error != 0)
2470                 return error;
2471
2472         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2473                 data = htole32(32); /* default value */
2474                 DPRINTF(("Setting tx power index to %u\n", le32toh(data)));
2475                 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data,
2476                     sizeof data);
2477                 if (error != 0)
2478                         return error;
2479         }
2480
2481         return 0;
2482 }
2483
2484 static void
2485 ipw_stop(void *priv)
2486 {
2487         struct ipw_softc *sc = priv;
2488
2489         IPW_LOCK(sc);
2490         ipw_stop_locked(sc);
2491         IPW_UNLOCK(sc);
2492 }
2493
2494 static void
2495 ipw_stop_locked(struct ipw_softc *sc)
2496 {
2497         int i;
2498
2499         IPW_LOCK_ASSERT(sc);
2500
2501         callout_stop(&sc->sc_wdtimer);
2502         ipw_stop_master(sc);
2503
2504         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET);
2505
2506         /*
2507          * Release tx buffers.
2508          */
2509         for (i = 0; i < IPW_NTBD; i++)
2510                 ipw_release_sbd(sc, &sc->stbd_list[i]);
2511
2512         sc->sc_tx_timer = 0;
2513         sc->flags &= ~IPW_FLAG_RUNNING;
2514 }
2515
2516 static int
2517 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)
2518 {
2519         struct ipw_softc *sc = arg1;
2520         uint32_t i, size, buf[256];
2521
2522         memset(buf, 0, sizeof buf);
2523
2524         if (!(sc->flags & IPW_FLAG_FW_INITED))
2525                 return SYSCTL_OUT(req, buf, sizeof buf);
2526
2527         CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base);
2528
2529         size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256);
2530         for (i = 1; i < size; i++)
2531                 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA));
2532
2533         return SYSCTL_OUT(req, buf, size);
2534 }
2535
2536 static int
2537 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)
2538 {
2539         struct ipw_softc *sc = arg1;
2540         int val;
2541
2542         val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) &&
2543                 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED));
2544
2545         return SYSCTL_OUT(req, &val, sizeof val);
2546 }
2547
2548 static uint32_t
2549 ipw_read_table1(struct ipw_softc *sc, uint32_t off)
2550 {
2551         return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off));
2552 }
2553
2554 static void
2555 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info)
2556 {
2557         MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info);
2558 }
2559
2560 #if 0
2561 static int
2562 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len)
2563 {
2564         uint32_t addr, info;
2565         uint16_t count, size;
2566         uint32_t total;
2567
2568         /* addr[4] + count[2] + size[2] */
2569         addr = MEM_READ_4(sc, sc->table2_base + off);
2570         info = MEM_READ_4(sc, sc->table2_base + off + 4);
2571
2572         count = info >> 16;
2573         size = info & 0xffff;
2574         total = count * size;
2575
2576         if (total > *len) {
2577                 *len = total;
2578                 return EINVAL;
2579         }
2580
2581         *len = total;
2582         ipw_read_mem_1(sc, addr, buf, total);
2583
2584         return 0;
2585 }
2586
2587 static void
2588 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2589     bus_size_t count)
2590 {
2591         for (; count > 0; offset++, datap++, count--) {
2592                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2593                 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3));
2594         }
2595 }
2596 #endif
2597
2598 static void
2599 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap,
2600     bus_size_t count)
2601 {
2602         for (; count > 0; offset++, datap++, count--) {
2603                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2604                 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap);
2605         }
2606 }
2607
2608 static void
2609 ipw_scan_start(struct ieee80211com *ic)
2610 {
2611         struct ipw_softc *sc = ic->ic_softc;
2612
2613         IPW_LOCK(sc);
2614         ipw_scan(sc);
2615         IPW_UNLOCK(sc);
2616 }
2617
2618 static void
2619 ipw_set_channel(struct ieee80211com *ic)
2620 {
2621         struct ipw_softc *sc = ic->ic_softc;
2622
2623         IPW_LOCK(sc);
2624         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2625                 ipw_disable(sc);
2626                 ipw_setchannel(sc, ic->ic_curchan);
2627                 ipw_enable(sc);
2628         }
2629         IPW_UNLOCK(sc);
2630 }
2631
2632 static void
2633 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
2634 {
2635         /* NB: all channels are scanned at once */
2636 }
2637
2638 static void
2639 ipw_scan_mindwell(struct ieee80211_scan_state *ss)
2640 {
2641         /* NB: don't try to abort scan; wait for firmware to finish */
2642 }
2643
2644 static void
2645 ipw_scan_end(struct ieee80211com *ic)
2646 {
2647         struct ipw_softc *sc = ic->ic_softc;
2648
2649         IPW_LOCK(sc);
2650         sc->flags &= ~IPW_FLAG_SCANNING;
2651         IPW_UNLOCK(sc);
2652 }