sys/dev/ipw/if_ipw.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2004-2006
   5  *      Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
   6  * Copyright (c) 2006 Sam Leffler, Errno Consulting
   7  * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice unmodified, this list of conditions, and the following
  14  *    disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __FBSDID("$FreeBSD$");
  34
  35 /*-
  36  * Intel(R) PRO/Wireless 2100 MiniPCI driver
  37  * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
  38  */
  39
  40 #include <sys/param.h>
  41 #include <sys/sysctl.h>
  42 #include <sys/sockio.h>
  43 #include <sys/mbuf.h>
  44 #include <sys/kernel.h>
  45 #include <sys/socket.h>
  46 #include <sys/systm.h>
  47 #include <sys/malloc.h>
  48 #include <sys/queue.h>
  49 #include <sys/taskqueue.h>
  50 #include <sys/module.h>
  51 #include <sys/bus.h>
  52 #include <sys/endian.h>
  53 #include <sys/linker.h>
  54 #include <sys/firmware.h>
  55
  56 #include <machine/bus.h>
  57 #include <machine/resource.h>
  58 #include <sys/rman.h>
  59
  60 #include <dev/pci/pcireg.h>
  61 #include <dev/pci/pcivar.h>
  62
  63 #include <net/bpf.h>
  64 #include <net/if.h>
  65 #include <net/if_var.h>
  66 #include <net/if_arp.h>
  67 #include <net/ethernet.h>
  68 #include <net/if_dl.h>
  69 #include <net/if_media.h>
  70 #include <net/if_types.h>
  71
  72 #include <net80211/ieee80211_var.h>
  73 #include <net80211/ieee80211_radiotap.h>
  74
  75 #include <netinet/in.h>
  76 #include <netinet/in_systm.h>
  77 #include <netinet/in_var.h>
  78 #include <netinet/ip.h>
  79 #include <netinet/if_ether.h>
  80
  81 #include <dev/ipw/if_ipwreg.h>
  82 #include <dev/ipw/if_ipwvar.h>
  83
  84 #define IPW_DEBUG
  85 #ifdef IPW_DEBUG
  86 #define DPRINTF(x)      do { if (ipw_debug > 0) printf x; } while (0)
  87 #define DPRINTFN(n, x)  do { if (ipw_debug >= (n)) printf x; } while (0)
  88 int ipw_debug = 0;
  89 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level");
  90 #else
  91 #define DPRINTF(x)
  92 #define DPRINTFN(n, x)
  93 #endif
  94
  95 MODULE_DEPEND(ipw, pci,  1, 1, 1);
  96 MODULE_DEPEND(ipw, wlan, 1, 1, 1);
  97 MODULE_DEPEND(ipw, firmware, 1, 1, 1);
  98
  99 struct ipw_ident {
 100         uint16_t        vendor;
 101         uint16_t        device;
 102         const char      *name;
 103 };
 104
 105 static const struct ipw_ident ipw_ident_table[] = {
 106         { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" },
 107
 108         { 0, 0, NULL }
 109 };
 110
 111 static struct ieee80211vap *ipw_vap_create(struct ieee80211com *,
 112                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
 113                     const uint8_t [IEEE80211_ADDR_LEN],
 114                     const uint8_t [IEEE80211_ADDR_LEN]);
 115 static void     ipw_vap_delete(struct ieee80211vap *);
 116 static int      ipw_dma_alloc(struct ipw_softc *);
 117 static void     ipw_release(struct ipw_softc *);
 118 static void     ipw_media_status(struct ifnet *, struct ifmediareq *);
 119 static int      ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 120 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t);
 121 static uint16_t ipw_read_chanmask(struct ipw_softc *);
 122 static void     ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *);
 123 static void     ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *);
 124 static void     ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *,
 125                     struct ipw_soft_bd *, struct ipw_soft_buf *);
 126 static void     ipw_rx_intr(struct ipw_softc *);
 127 static void     ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *);
 128 static void     ipw_tx_intr(struct ipw_softc *);
 129 static void     ipw_intr(void *);
 130 static void     ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int);
 131 static const char * ipw_cmdname(int);
 132 static int      ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t);
 133 static int      ipw_tx_start(struct ipw_softc *, struct mbuf *,
 134                     struct ieee80211_node *);
 135 static int      ipw_raw_xmit(struct ieee80211_node *, struct mbuf *,
 136                     const struct ieee80211_bpf_params *);
 137 static int      ipw_transmit(struct ieee80211com *, struct mbuf *);
 138 static void     ipw_start(struct ipw_softc *);
 139 static void     ipw_watchdog(void *);
 140 static void     ipw_parent(struct ieee80211com *);
 141 static void     ipw_stop_master(struct ipw_softc *);
 142 static int      ipw_enable(struct ipw_softc *);
 143 static int      ipw_disable(struct ipw_softc *);
 144 static int      ipw_reset(struct ipw_softc *);
 145 static int      ipw_load_ucode(struct ipw_softc *, const char *, int);
 146 static int      ipw_load_firmware(struct ipw_softc *, const char *, int);
 147 static int      ipw_config(struct ipw_softc *);
 148 static void     ipw_assoc(struct ieee80211com *, struct ieee80211vap *);
 149 static void     ipw_disassoc(struct ieee80211com *, struct ieee80211vap *);
 150 static void     ipw_init_task(void *, int);
 151 static void     ipw_init(void *);
 152 static void     ipw_init_locked(struct ipw_softc *);
 153 static void     ipw_stop(void *);
 154 static void     ipw_stop_locked(struct ipw_softc *);
 155 static int      ipw_sysctl_stats(SYSCTL_HANDLER_ARGS);
 156 static int      ipw_sysctl_radio(SYSCTL_HANDLER_ARGS);
 157 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t);
 158 static void     ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t);
 159 #if 0
 160 static int      ipw_read_table2(struct ipw_softc *, uint32_t, void *,
 161                     uint32_t *);
 162 static void     ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *,
 163                     bus_size_t);
 164 #endif
 165 static void     ipw_write_mem_1(struct ipw_softc *, bus_size_t,
 166                     const uint8_t *, bus_size_t);
 167 static int      ipw_scan(struct ipw_softc *);
 168 static void     ipw_scan_start(struct ieee80211com *);
 169 static void     ipw_scan_end(struct ieee80211com *);
 170 static void     ipw_getradiocaps(struct ieee80211com *, int, int *,
 171                     struct ieee80211_channel[]);
 172 static void     ipw_set_channel(struct ieee80211com *);
 173 static void     ipw_scan_curchan(struct ieee80211_scan_state *,
 174                     unsigned long maxdwell);
 175 static void     ipw_scan_mindwell(struct ieee80211_scan_state *);
 176
 177 static int ipw_probe(device_t);
 178 static int ipw_attach(device_t);
 179 static int ipw_detach(device_t);
 180 static int ipw_shutdown(device_t);
 181 static int ipw_suspend(device_t);
 182 static int ipw_resume(device_t);
 183
 184 static device_method_t ipw_methods[] = {
 185         /* Device interface */
 186         DEVMETHOD(device_probe,         ipw_probe),
 187         DEVMETHOD(device_attach,        ipw_attach),
 188         DEVMETHOD(device_detach,        ipw_detach),
 189         DEVMETHOD(device_shutdown,      ipw_shutdown),
 190         DEVMETHOD(device_suspend,       ipw_suspend),
 191         DEVMETHOD(device_resume,        ipw_resume),
 192
 193         DEVMETHOD_END
 194 };
 195
 196 static driver_t ipw_driver = {
 197         "ipw",
 198         ipw_methods,
 199         sizeof (struct ipw_softc)
 200 };
 201
 202 static devclass_t ipw_devclass;
 203
 204 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, NULL, NULL);
 205
 206 MODULE_VERSION(ipw, 1);
 207
 208 static int
 209 ipw_probe(device_t dev)
 210 {
 211         const struct ipw_ident *ident;
 212
 213         for (ident = ipw_ident_table; ident->name != NULL; ident++) {
 214                 if (pci_get_vendor(dev) == ident->vendor &&
 215                     pci_get_device(dev) == ident->device) {
 216                         device_set_desc(dev, ident->name);
 217                         return (BUS_PROBE_DEFAULT);
 218                 }
 219         }
 220         return ENXIO;
 221 }
 222
 223 /* Base Address Register */
 224 static int
 225 ipw_attach(device_t dev)
 226 {
 227         struct ipw_softc *sc = device_get_softc(dev);
 228         struct ieee80211com *ic = &sc->sc_ic;
 229         uint16_t val;
 230         int error, i;
 231
 232         sc->sc_dev = dev;
 233
 234         mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
 235             MTX_DEF | MTX_RECURSE);
 236         mbufq_init(&sc->sc_snd, ifqmaxlen);
 237         TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc);
 238         callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
 239
 240         pci_write_config(dev, 0x41, 0, 1);
 241
 242         /* enable bus-mastering */
 243         pci_enable_busmaster(dev);
 244
 245         i = PCIR_BAR(0);
 246         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
 247         if (sc->mem == NULL) {
 248                 device_printf(dev, "could not allocate memory resource\n");
 249                 goto fail;
 250         }
 251
 252         sc->sc_st = rman_get_bustag(sc->mem);
 253         sc->sc_sh = rman_get_bushandle(sc->mem);
 254
 255         i = 0;
 256         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
 257             RF_ACTIVE | RF_SHAREABLE);
 258         if (sc->irq == NULL) {
 259                 device_printf(dev, "could not allocate interrupt resource\n");
 260                 goto fail1;
 261         }
 262
 263         if (ipw_reset(sc) != 0) {
 264                 device_printf(dev, "could not reset adapter\n");
 265                 goto fail2;
 266         }
 267
 268         if (ipw_dma_alloc(sc) != 0) {
 269                 device_printf(dev, "could not allocate DMA resources\n");
 270                 goto fail2;
 271         }
 272
 273         ic->ic_softc = sc;
 274         ic->ic_name = device_get_nameunit(dev);
 275         ic->ic_opmode = IEEE80211_M_STA;
 276         ic->ic_phytype = IEEE80211_T_DS;
 277
 278         /* set device capabilities */
 279         ic->ic_caps =
 280                   IEEE80211_C_STA               /* station mode supported */
 281                 | IEEE80211_C_IBSS              /* IBSS mode supported */
 282                 | IEEE80211_C_MONITOR           /* monitor mode supported */
 283                 | IEEE80211_C_PMGT              /* power save supported */
 284                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 285                 | IEEE80211_C_WPA               /* 802.11i supported */
 286                 ;
 287
 288         /* read MAC address from EEPROM */
 289         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0);
 290         ic->ic_macaddr[0] = val >> 8;
 291         ic->ic_macaddr[1] = val & 0xff;
 292         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1);
 293         ic->ic_macaddr[2] = val >> 8;
 294         ic->ic_macaddr[3] = val & 0xff;
 295         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2);
 296         ic->ic_macaddr[4] = val >> 8;
 297         ic->ic_macaddr[5] = val & 0xff;
 298
 299         sc->chanmask = ipw_read_chanmask(sc);
 300         ipw_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
 301             ic->ic_channels);
 302
 303         /* check support for radio transmitter switch in EEPROM */
 304         if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8))
 305                 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH;
 306
 307         ieee80211_ifattach(ic);
 308         ic->ic_scan_start = ipw_scan_start;
 309         ic->ic_scan_end = ipw_scan_end;
 310         ic->ic_getradiocaps = ipw_getradiocaps;
 311         ic->ic_set_channel = ipw_set_channel;
 312         ic->ic_scan_curchan = ipw_scan_curchan;
 313         ic->ic_scan_mindwell = ipw_scan_mindwell;
 314         ic->ic_raw_xmit = ipw_raw_xmit;
 315         ic->ic_vap_create = ipw_vap_create;
 316         ic->ic_vap_delete = ipw_vap_delete;
 317         ic->ic_transmit = ipw_transmit;
 318         ic->ic_parent = ipw_parent;
 319
 320         ieee80211_radiotap_attach(ic,
 321             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 322                 IPW_TX_RADIOTAP_PRESENT,
 323             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 324                 IPW_RX_RADIOTAP_PRESENT);
 325
 326         /*
 327          * Add a few sysctl knobs.
 328          */
 329         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 330             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio",
 331             CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I",
 332             "radio transmitter switch state (0=off, 1=on)");
 333
 334         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 335             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
 336             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S",
 337             "statistics");
 338
 339         /*
 340          * Hook our interrupt after all initialization is complete.
 341          */
 342         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 343             NULL, ipw_intr, sc, &sc->sc_ih);
 344         if (error != 0) {
 345                 device_printf(dev, "could not set up interrupt\n");
 346                 goto fail3;
 347         }
 348
 349         if (bootverbose)
 350                 ieee80211_announce(ic);
 351
 352         return 0;
 353 fail3:
 354         ipw_release(sc);
 355 fail2:
 356         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 357 fail1:
 358         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
 359             sc->mem);
 360 fail:
 361         mtx_destroy(&sc->sc_mtx);
 362         return ENXIO;
 363 }
 364
 365 static int
 366 ipw_detach(device_t dev)
 367 {
 368         struct ipw_softc *sc = device_get_softc(dev);
 369         struct ieee80211com *ic = &sc->sc_ic;
 370
 371         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 372
 373         ieee80211_draintask(ic, &sc->sc_init_task);
 374         ipw_stop(sc);
 375
 376         ieee80211_ifdetach(ic);
 377
 378         callout_drain(&sc->sc_wdtimer);
 379         mbufq_drain(&sc->sc_snd);
 380
 381         ipw_release(sc);
 382
 383         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 384
 385         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
 386             sc->mem);
 387
 388         if (sc->sc_firmware != NULL) {
 389                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 390                 sc->sc_firmware = NULL;
 391         }
 392
 393         mtx_destroy(&sc->sc_mtx);
 394
 395         return 0;
 396 }
 397
 398 static struct ieee80211vap *
 399 ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 400     enum ieee80211_opmode opmode, int flags,
 401     const uint8_t bssid[IEEE80211_ADDR_LEN],
 402     const uint8_t mac[IEEE80211_ADDR_LEN])
 403 {
 404         struct ipw_softc *sc = ic->ic_softc;
 405         struct ipw_vap *ivp;
 406         struct ieee80211vap *vap;
 407         const struct firmware *fp;
 408         const struct ipw_firmware_hdr *hdr;
 409         const char *imagename;
 410
 411         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 412                 return NULL;
 413
 414         switch (opmode) {
 415         case IEEE80211_M_STA:
 416                 imagename = "ipw_bss";
 417                 break;
 418         case IEEE80211_M_IBSS:
 419                 imagename = "ipw_ibss";
 420                 break;
 421         case IEEE80211_M_MONITOR:
 422                 imagename = "ipw_monitor";
 423                 break;
 424         default:
 425                 return NULL;
 426         }
 427
 428         /*
 429          * Load firmware image using the firmware(9) subsystem.  Doing
 430          * this unlocked is ok since we're single-threaded by the
 431          * 802.11 layer.
 432          */
 433         if (sc->sc_firmware == NULL ||
 434             strcmp(sc->sc_firmware->name, imagename) != 0) {
 435                 if (sc->sc_firmware != NULL)
 436                         firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 437                 sc->sc_firmware = firmware_get(imagename);
 438         }
 439         if (sc->sc_firmware == NULL) {
 440                 device_printf(sc->sc_dev,
 441                     "could not load firmware image '%s'\n", imagename);
 442                 return NULL;
 443         }
 444         fp = sc->sc_firmware;
 445         if (fp->datasize < sizeof *hdr) {
 446                 device_printf(sc->sc_dev,
 447                     "firmware image too short %zu\n", fp->datasize);
 448                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 449                 sc->sc_firmware = NULL;
 450                 return NULL;
 451         }
 452         hdr = (const struct ipw_firmware_hdr *)fp->data;
 453         if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) +
 454             le32toh(hdr->ucodesz)) {
 455                 device_printf(sc->sc_dev,
 456                     "firmware image too short %zu\n", fp->datasize);
 457                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 458                 sc->sc_firmware = NULL;
 459                 return NULL;
 460         }
 461
 462         ivp = malloc(sizeof(struct ipw_vap), M_80211_VAP, M_WAITOK | M_ZERO);
 463         vap = &ivp->vap;
 464
 465         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
 466         /* override with driver methods */
 467         ivp->newstate = vap->iv_newstate;
 468         vap->iv_newstate = ipw_newstate;
 469
 470         /* complete setup */
 471         ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status,
 472             mac);
 473         ic->ic_opmode = opmode;
 474         return vap;
 475 }
 476
 477 static void
 478 ipw_vap_delete(struct ieee80211vap *vap)
 479 {
 480         struct ipw_vap *ivp = IPW_VAP(vap);
 481
 482         ieee80211_vap_detach(vap);
 483         free(ivp, M_80211_VAP);
 484 }
 485
 486 static int
 487 ipw_dma_alloc(struct ipw_softc *sc)
 488 {
 489         struct ipw_soft_bd *sbd;
 490         struct ipw_soft_hdr *shdr;
 491         struct ipw_soft_buf *sbuf;
 492         bus_addr_t physaddr;
 493         int error, i;
 494
 495         /*
 496          * Allocate parent DMA tag for subsequent allocations.
 497          */
 498         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 499             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 500             BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED,
 501             BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat);
 502         if (error != 0) {
 503                 device_printf(sc->sc_dev, "could not create parent DMA tag\n");
 504                 goto fail;
 505         }
 506
 507         /*
 508          * Allocate and map tx ring.
 509          */
 510         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 511             BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL,
 512             NULL, &sc->tbd_dmat);
 513         if (error != 0) {
 514                 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
 515                 goto fail;
 516         }
 517
 518         error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list,
 519             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map);
 520         if (error != 0) {
 521                 device_printf(sc->sc_dev,
 522                     "could not allocate tx ring DMA memory\n");
 523                 goto fail;
 524         }
 525
 526         error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list,
 527             IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0);
 528         if (error != 0) {
 529                 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n");
 530                 goto fail;
 531         }
 532
 533         /*
 534          * Allocate and map rx ring.
 535          */
 536         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 537             BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL,
 538             NULL, &sc->rbd_dmat);
 539         if (error != 0) {
 540                 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n");
 541                 goto fail;
 542         }
 543
 544         error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list,
 545             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map);
 546         if (error != 0) {
 547                 device_printf(sc->sc_dev,
 548                     "could not allocate rx ring DMA memory\n");
 549                 goto fail;
 550         }
 551
 552         error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list,
 553             IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0);
 554         if (error != 0) {
 555                 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n");
 556                 goto fail;
 557         }
 558
 559         /*
 560          * Allocate and map status ring.
 561          */
 562         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 563             BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0,
 564             NULL, NULL, &sc->status_dmat);
 565         if (error != 0) {
 566                 device_printf(sc->sc_dev,
 567                     "could not create status ring DMA tag\n");
 568                 goto fail;
 569         }
 570
 571         error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list,
 572             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map);
 573         if (error != 0) {
 574                 device_printf(sc->sc_dev,
 575                     "could not allocate status ring DMA memory\n");
 576                 goto fail;
 577         }
 578
 579         error = bus_dmamap_load(sc->status_dmat, sc->status_map,
 580             sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys,
 581             0);
 582         if (error != 0) {
 583                 device_printf(sc->sc_dev,
 584                     "could not map status ring DMA memory\n");
 585                 goto fail;
 586         }
 587
 588         /*
 589          * Allocate command DMA map.
 590          */
 591         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 592             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1,
 593             sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat);
 594         if (error != 0) {
 595                 device_printf(sc->sc_dev, "could not create command DMA tag\n");
 596                 goto fail;
 597         }
 598
 599         error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map);
 600         if (error != 0) {
 601                 device_printf(sc->sc_dev,
 602                     "could not create command DMA map\n");
 603                 goto fail;
 604         }
 605
 606         /*
 607          * Allocate headers DMA maps.
 608          */
 609         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 610             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1,
 611             sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat);
 612         if (error != 0) {
 613                 device_printf(sc->sc_dev, "could not create header DMA tag\n");
 614                 goto fail;
 615         }
 616
 617         SLIST_INIT(&sc->free_shdr);
 618         for (i = 0; i < IPW_NDATA; i++) {
 619                 shdr = &sc->shdr_list[i];
 620                 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map);
 621                 if (error != 0) {
 622                         device_printf(sc->sc_dev,
 623                             "could not create header DMA map\n");
 624                         goto fail;
 625                 }
 626                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
 627         }
 628
 629         /*
 630          * Allocate tx buffers DMA maps.
 631          */
 632         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 633             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0,
 634             NULL, NULL, &sc->txbuf_dmat);
 635         if (error != 0) {
 636                 device_printf(sc->sc_dev, "could not create tx DMA tag\n");
 637                 goto fail;
 638         }
 639
 640         SLIST_INIT(&sc->free_sbuf);
 641         for (i = 0; i < IPW_NDATA; i++) {
 642                 sbuf = &sc->tx_sbuf_list[i];
 643                 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map);
 644                 if (error != 0) {
 645                         device_printf(sc->sc_dev,
 646                             "could not create tx DMA map\n");
 647                         goto fail;
 648                 }
 649                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
 650         }
 651
 652         /*
 653          * Initialize tx ring.
 654          */
 655         for (i = 0; i < IPW_NTBD; i++) {
 656                 sbd = &sc->stbd_list[i];
 657                 sbd->bd = &sc->tbd_list[i];
 658                 sbd->type = IPW_SBD_TYPE_NOASSOC;
 659         }
 660
 661         /*
 662          * Pre-allocate rx buffers and DMA maps.
 663          */
 664         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 665             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
 666             NULL, &sc->rxbuf_dmat);
 667         if (error != 0) {
 668                 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
 669                 goto fail;
 670         }
 671
 672         for (i = 0; i < IPW_NRBD; i++) {
 673                 sbd = &sc->srbd_list[i];
 674                 sbuf = &sc->rx_sbuf_list[i];
 675                 sbd->bd = &sc->rbd_list[i];
 676
 677                 sbuf->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 678                 if (sbuf->m == NULL) {
 679                         device_printf(sc->sc_dev,
 680                             "could not allocate rx mbuf\n");
 681                         error = ENOMEM;
 682                         goto fail;
 683                 }
 684
 685                 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map);
 686                 if (error != 0) {
 687                         device_printf(sc->sc_dev,
 688                             "could not create rx DMA map\n");
 689                         goto fail;
 690                 }
 691
 692                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
 693                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
 694                     &physaddr, 0);
 695                 if (error != 0) {
 696                         device_printf(sc->sc_dev,
 697                             "could not map rx DMA memory\n");
 698                         goto fail;
 699                 }
 700
 701                 sbd->type = IPW_SBD_TYPE_DATA;
 702                 sbd->priv = sbuf;
 703                 sbd->bd->physaddr = htole32(physaddr);
 704                 sbd->bd->len = htole32(MCLBYTES);
 705         }
 706
 707         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
 708
 709         return 0;
 710
 711 fail:   ipw_release(sc);
 712         return error;
 713 }
 714
 715 static void
 716 ipw_release(struct ipw_softc *sc)
 717 {
 718         struct ipw_soft_buf *sbuf;
 719         int i;
 720
 721         if (sc->parent_dmat != NULL) {
 722                 bus_dma_tag_destroy(sc->parent_dmat);
 723         }
 724
 725         if (sc->tbd_dmat != NULL) {
 726                 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map);
 727                 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, sc->tbd_map);
 728                 bus_dma_tag_destroy(sc->tbd_dmat);
 729         }
 730
 731         if (sc->rbd_dmat != NULL) {
 732                 if (sc->rbd_list != NULL) {
 733                         bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map);
 734                         bus_dmamem_free(sc->rbd_dmat, sc->rbd_list,
 735                             sc->rbd_map);
 736                 }
 737                 bus_dma_tag_destroy(sc->rbd_dmat);
 738         }
 739
 740         if (sc->status_dmat != NULL) {
 741                 if (sc->status_list != NULL) {
 742                         bus_dmamap_unload(sc->status_dmat, sc->status_map);
 743                         bus_dmamem_free(sc->status_dmat, sc->status_list,
 744                             sc->status_map);
 745                 }
 746                 bus_dma_tag_destroy(sc->status_dmat);
 747         }
 748
 749         for (i = 0; i < IPW_NTBD; i++)
 750                 ipw_release_sbd(sc, &sc->stbd_list[i]);
 751
 752         if (sc->cmd_dmat != NULL) {
 753                 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map);
 754                 bus_dma_tag_destroy(sc->cmd_dmat);
 755         }
 756
 757         if (sc->hdr_dmat != NULL) {
 758                 for (i = 0; i < IPW_NDATA; i++)
 759                         bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map);
 760                 bus_dma_tag_destroy(sc->hdr_dmat);
 761         }
 762
 763         if (sc->txbuf_dmat != NULL) {
 764                 for (i = 0; i < IPW_NDATA; i++) {
 765                         bus_dmamap_destroy(sc->txbuf_dmat,
 766                             sc->tx_sbuf_list[i].map);
 767                 }
 768                 bus_dma_tag_destroy(sc->txbuf_dmat);
 769         }
 770
 771         if (sc->rxbuf_dmat != NULL) {
 772                 for (i = 0; i < IPW_NRBD; i++) {
 773                         sbuf = &sc->rx_sbuf_list[i];
 774                         if (sbuf->m != NULL) {
 775                                 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map,
 776                                     BUS_DMASYNC_POSTREAD);
 777                                 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
 778                                 m_freem(sbuf->m);
 779                         }
 780                         bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map);
 781                 }
 782                 bus_dma_tag_destroy(sc->rxbuf_dmat);
 783         }
 784 }
 785
 786 static int
 787 ipw_shutdown(device_t dev)
 788 {
 789         struct ipw_softc *sc = device_get_softc(dev);
 790
 791         ipw_stop(sc);
 792
 793         return 0;
 794 }
 795
 796 static int
 797 ipw_suspend(device_t dev)
 798 {
 799         struct ipw_softc *sc = device_get_softc(dev);
 800         struct ieee80211com *ic = &sc->sc_ic;
 801
 802         ieee80211_suspend_all(ic);
 803         return 0;
 804 }
 805
 806 static int
 807 ipw_resume(device_t dev)
 808 {
 809         struct ipw_softc *sc = device_get_softc(dev);
 810         struct ieee80211com *ic = &sc->sc_ic;
 811
 812         pci_write_config(dev, 0x41, 0, 1);
 813
 814         ieee80211_resume_all(ic);
 815         return 0;
 816 }
 817
 818 static int
 819 ipw_cvtrate(int ipwrate)
 820 {
 821         switch (ipwrate) {
 822         case IPW_RATE_DS1:      return 2;
 823         case IPW_RATE_DS2:      return 4;
 824         case IPW_RATE_DS5:      return 11;
 825         case IPW_RATE_DS11:     return 22;
 826         }
 827         return 0;
 828 }
 829
 830 /*
 831  * The firmware automatically adapts the transmit speed. We report its current
 832  * value here.
 833  */
 834 static void
 835 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 836 {
 837         struct ieee80211vap *vap = ifp->if_softc;
 838         struct ieee80211com *ic = vap->iv_ic;
 839         struct ipw_softc *sc = ic->ic_softc;
 840
 841         /* read current transmission rate from adapter */
 842         vap->iv_bss->ni_txrate = ipw_cvtrate(
 843             ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf);
 844         ieee80211_media_status(ifp, imr);
 845 }
 846
 847 static int
 848 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 849 {
 850         struct ipw_vap *ivp = IPW_VAP(vap);
 851         struct ieee80211com *ic = vap->iv_ic;
 852         struct ipw_softc *sc = ic->ic_softc;
 853         enum ieee80211_state ostate;
 854
 855         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
 856                 ieee80211_state_name[vap->iv_state],
 857                 ieee80211_state_name[nstate], sc->flags));
 858
 859         ostate = vap->iv_state;
 860         IEEE80211_UNLOCK(ic);
 861
 862         switch (nstate) {
 863         case IEEE80211_S_RUN:
 864                 if (ic->ic_opmode == IEEE80211_M_IBSS) {
 865                         /*
 866                          * XXX when joining an ibss network we are called
 867                          * with a SCAN -> RUN transition on scan complete.
 868                          * Use that to call ipw_assoc.  On completing the
 869                          * join we are then called again with an AUTH -> RUN
 870                          * transition and we want to do nothing.  This is
 871                          * all totally bogus and needs to be redone.
 872                          */
 873                         if (ostate == IEEE80211_S_SCAN)
 874                                 ipw_assoc(ic, vap);
 875                 }
 876                 break;
 877
 878         case IEEE80211_S_INIT:
 879                 if (sc->flags & IPW_FLAG_ASSOCIATED)
 880                         ipw_disassoc(ic, vap);
 881                 break;
 882
 883         case IEEE80211_S_AUTH:
 884                 /*
 885                  * Move to ASSOC state after the ipw_assoc() call.  Firmware
 886                  * takes care of authentication, after the call we'll receive
 887                  * only an assoc response which would otherwise be discared
 888                  * if we are still in AUTH state.
 889                  */
 890                 nstate = IEEE80211_S_ASSOC;
 891                 ipw_assoc(ic, vap);
 892                 break;
 893
 894         case IEEE80211_S_ASSOC:
 895                 /*
 896                  * If we are not transitioning from AUTH then resend the
 897                  * association request.
 898                  */
 899                 if (ostate != IEEE80211_S_AUTH)
 900                         ipw_assoc(ic, vap);
 901                 break;
 902
 903         default:
 904                 break;
 905         }
 906         IEEE80211_LOCK(ic);
 907         return ivp->newstate(vap, nstate, arg);
 908 }
 909
 910 /*
 911  * Read 16 bits at address 'addr' from the serial EEPROM.
 912  */
 913 static uint16_t
 914 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr)
 915 {
 916         uint32_t tmp;
 917         uint16_t val;
 918         int n;
 919
 920         /* clock C once before the first command */
 921         IPW_EEPROM_CTL(sc, 0);
 922         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 923         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 924         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 925
 926         /* write start bit (1) */
 927         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 928         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 929
 930         /* write READ opcode (10) */
 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         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 934         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 935
 936         /* write address A7-A0 */
 937         for (n = 7; n >= 0; n--) {
 938                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 939                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D));
 940                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 941                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C);
 942         }
 943
 944         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 945
 946         /* read data Q15-Q0 */
 947         val = 0;
 948         for (n = 15; n >= 0; n--) {
 949                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 950                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 951                 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL);
 952                 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n;
 953         }
 954
 955         IPW_EEPROM_CTL(sc, 0);
 956
 957         /* clear Chip Select and clock C */
 958         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 959         IPW_EEPROM_CTL(sc, 0);
 960         IPW_EEPROM_CTL(sc, IPW_EEPROM_C);
 961
 962         return le16toh(val);
 963 }
 964
 965 static uint16_t
 966 ipw_read_chanmask(struct ipw_softc *sc)
 967 {
 968         uint16_t val;
 969
 970         /* set supported .11b channels (read from EEPROM) */
 971         if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0)
 972                 val = 0x7ff;    /* default to channels 1-11 */
 973         val <<= 1;
 974
 975         return (val);
 976 }
 977
 978 static void
 979 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
 980 {
 981         struct ipw_cmd *cmd;
 982
 983         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
 984
 985         cmd = mtod(sbuf->m, struct ipw_cmd *);
 986
 987         DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n",
 988             ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type),
 989             le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len),
 990             le32toh(cmd->status)));
 991
 992         sc->flags &= ~IPW_FLAG_BUSY;
 993         wakeup(sc);
 994 }
 995
 996 static void
 997 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
 998 {
 999 #define IEEESTATE(vap)  ieee80211_state_name[vap->iv_state]
1000         struct ieee80211com *ic = &sc->sc_ic;
1001         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1002         uint32_t state;
1003
1004         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1005
1006         state = le32toh(*mtod(sbuf->m, uint32_t *));
1007
1008         switch (state) {
1009         case IPW_STATE_ASSOCIATED:
1010                 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n",
1011                         IEEESTATE(vap), sc->flags));
1012                 /* XXX suppress state change in case the fw auto-associates */
1013                 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) {
1014                         DPRINTF(("Unexpected association (%s, flags 0x%x)\n",
1015                                 IEEESTATE(vap), sc->flags));
1016                         break;
1017                 }
1018                 sc->flags &= ~IPW_FLAG_ASSOCIATING;
1019                 sc->flags |= IPW_FLAG_ASSOCIATED;
1020                 break;
1021
1022         case IPW_STATE_SCANNING:
1023                 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n",
1024                         IEEESTATE(vap), sc->flags));
1025                 /*
1026                  * NB: Check driver state for association on assoc
1027                  * loss as the firmware will immediately start to
1028                  * scan and we would treat it as a beacon miss if
1029                  * we checked the 802.11 layer state.
1030                  */
1031                 if (sc->flags & IPW_FLAG_ASSOCIATED) {
1032                         IPW_UNLOCK(sc);
1033                         /* XXX probably need to issue disassoc to fw */
1034                         ieee80211_beacon_miss(ic);
1035                         IPW_LOCK(sc);
1036                 }
1037                 break;
1038
1039         case IPW_STATE_SCAN_COMPLETE:
1040                 /*
1041                  * XXX For some reason scan requests generate scan
1042                  * started + scan done events before any traffic is
1043                  * received (e.g. probe response frames).  We work
1044                  * around this by marking the HACK flag and skipping
1045                  * the first scan complete event.
1046                 */
1047                 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n",
1048                             IEEESTATE(vap), sc->flags));
1049                 if (sc->flags & IPW_FLAG_HACK) {
1050                         sc->flags &= ~IPW_FLAG_HACK;
1051                         break;
1052                 }
1053                 if (sc->flags & IPW_FLAG_SCANNING) {
1054                         IPW_UNLOCK(sc);
1055                         ieee80211_scan_done(vap);
1056                         IPW_LOCK(sc);
1057                         sc->flags &= ~IPW_FLAG_SCANNING;
1058                         sc->sc_scan_timer = 0;
1059                 }
1060                 break;
1061
1062         case IPW_STATE_ASSOCIATION_LOST:
1063                 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n",
1064                         IEEESTATE(vap), sc->flags));
1065                 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1066                 if (vap->iv_state == IEEE80211_S_RUN) {
1067                         IPW_UNLOCK(sc);
1068                         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1069                         IPW_LOCK(sc);
1070                 }
1071                 break;
1072
1073         case IPW_STATE_DISABLED:
1074                 /* XXX? is this right? */
1075                 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING |
1076                     IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1077                 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n",
1078                         IEEESTATE(vap), sc->flags));
1079                 break;
1080
1081         case IPW_STATE_RADIO_DISABLED:
1082                 device_printf(sc->sc_dev, "radio turned off\n");
1083                 ieee80211_notify_radio(ic, 0);
1084                 ipw_stop_locked(sc);
1085                 /* XXX start polling thread to detect radio on */
1086                 break;
1087
1088         default:
1089                 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n",
1090                         __func__, state, IEEESTATE(vap), sc->flags));
1091                 break;
1092         }
1093 #undef IEEESTATE
1094 }
1095
1096 /*
1097  * Set driver state for current channel.
1098  */
1099 static void
1100 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan)
1101 {
1102         struct ieee80211com *ic = &sc->sc_ic;
1103
1104         ic->ic_curchan = chan;
1105         ieee80211_radiotap_chan_change(ic);
1106 }
1107
1108 /*
1109  * XXX: Hack to set the current channel to the value advertised in beacons or
1110  * probe responses. Only used during AP detection.
1111  */
1112 static void
1113 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m)
1114 {
1115         struct ieee80211com *ic = &sc->sc_ic;
1116         struct ieee80211_channel *c;
1117         struct ieee80211_frame *wh;
1118         uint8_t subtype;
1119         uint8_t *frm, *efrm;
1120
1121         wh = mtod(m, struct ieee80211_frame *);
1122
1123         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
1124                 return;
1125
1126         subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1127
1128         if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1129             subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1130                 return;
1131
1132         /* XXX use ieee80211_parse_beacon */
1133         frm = (uint8_t *)(wh + 1);
1134         efrm = mtod(m, uint8_t *) + m->m_len;
1135
1136         frm += 12;      /* skip tstamp, bintval and capinfo fields */
1137         while (frm < efrm) {
1138                 if (*frm == IEEE80211_ELEMID_DSPARMS)
1139 #if IEEE80211_CHAN_MAX < 255
1140                 if (frm[2] <= IEEE80211_CHAN_MAX)
1141 #endif
1142                 {
1143                         DPRINTF(("Fixing channel to %d\n", frm[2]));
1144                         c = ieee80211_find_channel(ic,
1145                                 ieee80211_ieee2mhz(frm[2], 0),
1146                                 IEEE80211_CHAN_B);
1147                         if (c == NULL)
1148                                 c = &ic->ic_channels[0];
1149                         ipw_setcurchan(sc, c);
1150                 }
1151
1152                 frm += frm[1] + 2;
1153         }
1154 }
1155
1156 static void
1157 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status,
1158     struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf)
1159 {
1160         struct ieee80211com *ic = &sc->sc_ic;
1161         struct mbuf *mnew, *m;
1162         struct ieee80211_node *ni;
1163         bus_addr_t physaddr;
1164         int error;
1165         int8_t rssi, nf;
1166
1167         DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len),
1168             status->rssi));
1169
1170         if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) ||
1171             le32toh(status->len) > MCLBYTES)
1172                 return;
1173
1174         /*
1175          * Try to allocate a new mbuf for this ring element and load it before
1176          * processing the current mbuf. If the ring element cannot be loaded,
1177          * drop the received packet and reuse the old mbuf. In the unlikely
1178          * case that the old mbuf can't be reloaded either, explicitly panic.
1179          */
1180         mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1181         if (mnew == NULL) {
1182                 counter_u64_add(ic->ic_ierrors, 1);
1183                 return;
1184         }
1185
1186         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1187         bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
1188
1189         error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *),
1190             MCLBYTES, ipw_dma_map_addr, &physaddr, 0);
1191         if (error != 0) {
1192                 m_freem(mnew);
1193
1194                 /* try to reload the old mbuf */
1195                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
1196                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
1197                     &physaddr, 0);
1198                 if (error != 0) {
1199                         /* very unlikely that it will fail... */
1200                         panic("%s: could not load old rx mbuf",
1201                             device_get_name(sc->sc_dev));
1202                 }
1203                 counter_u64_add(ic->ic_ierrors, 1);
1204                 return;
1205         }
1206
1207         /*
1208          * New mbuf successfully loaded, update Rx ring and continue
1209          * processing.
1210          */
1211         m = sbuf->m;
1212         sbuf->m = mnew;
1213         sbd->bd->physaddr = htole32(physaddr);
1214         m->m_pkthdr.len = m->m_len = le32toh(status->len);
1215
1216         rssi = status->rssi + IPW_RSSI_TO_DBM;
1217         nf = -95;
1218         if (ieee80211_radiotap_active(ic)) {
1219                 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap;
1220
1221                 tap->wr_flags = 0;
1222                 tap->wr_antsignal = rssi;
1223                 tap->wr_antnoise = nf;
1224         }
1225
1226         if (sc->flags & IPW_FLAG_SCANNING)
1227                 ipw_fix_channel(sc, m);
1228
1229         IPW_UNLOCK(sc);
1230         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1231         if (ni != NULL) {
1232                 (void) ieee80211_input(ni, m, rssi - nf, nf);
1233                 ieee80211_free_node(ni);
1234         } else
1235                 (void) ieee80211_input_all(ic, m, rssi - nf, nf);
1236         IPW_LOCK(sc);
1237
1238         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1239 }
1240
1241 static void
1242 ipw_rx_intr(struct ipw_softc *sc)
1243 {
1244         struct ipw_status *status;
1245         struct ipw_soft_bd *sbd;
1246         struct ipw_soft_buf *sbuf;
1247         uint32_t r, i;
1248
1249         if (!(sc->flags & IPW_FLAG_FW_INITED))
1250                 return;
1251
1252         r = CSR_READ_4(sc, IPW_CSR_RX_READ);
1253
1254         bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD);
1255
1256         for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) {
1257                 status = &sc->status_list[i];
1258                 sbd = &sc->srbd_list[i];
1259                 sbuf = sbd->priv;
1260
1261                 switch (le16toh(status->code) & 0xf) {
1262                 case IPW_STATUS_CODE_COMMAND:
1263                         ipw_rx_cmd_intr(sc, sbuf);
1264                         break;
1265
1266                 case IPW_STATUS_CODE_NEWSTATE:
1267                         ipw_rx_newstate_intr(sc, sbuf);
1268                         break;
1269
1270                 case IPW_STATUS_CODE_DATA_802_3:
1271                 case IPW_STATUS_CODE_DATA_802_11:
1272                         ipw_rx_data_intr(sc, status, sbd, sbuf);
1273                         break;
1274
1275                 case IPW_STATUS_CODE_NOTIFICATION:
1276                         DPRINTFN(2, ("notification status, len %u flags 0x%x\n",
1277                             le32toh(status->len), status->flags));
1278                         /* XXX maybe drive state machine AUTH->ASSOC? */
1279                         break;
1280
1281                 default:
1282                         device_printf(sc->sc_dev, "unexpected status code %u\n",
1283                             le16toh(status->code));
1284                 }
1285
1286                 /* firmware was killed, stop processing received frames */
1287                 if (!(sc->flags & IPW_FLAG_FW_INITED))
1288                         return;
1289
1290                 sbd->bd->flags = 0;
1291         }
1292
1293         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1294
1295         /* kick the firmware */
1296         sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1;
1297         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
1298 }
1299
1300 static void
1301 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd)
1302 {
1303         struct ipw_soft_hdr *shdr;
1304         struct ipw_soft_buf *sbuf;
1305
1306         switch (sbd->type) {
1307         case IPW_SBD_TYPE_COMMAND:
1308                 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map,
1309                     BUS_DMASYNC_POSTWRITE);
1310                 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map);
1311                 break;
1312
1313         case IPW_SBD_TYPE_HEADER:
1314                 shdr = sbd->priv;
1315                 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE);
1316                 bus_dmamap_unload(sc->hdr_dmat, shdr->map);
1317                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
1318                 break;
1319
1320         case IPW_SBD_TYPE_DATA:
1321                 sbuf = sbd->priv;
1322                 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map,
1323                     BUS_DMASYNC_POSTWRITE);
1324                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1325                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
1326
1327                 if (sbuf->m->m_flags & M_TXCB)
1328                         ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/);
1329                 m_freem(sbuf->m);
1330                 ieee80211_free_node(sbuf->ni);
1331
1332                 sc->sc_tx_timer = 0;
1333                 break;
1334         }
1335
1336         sbd->type = IPW_SBD_TYPE_NOASSOC;
1337 }
1338
1339 static void
1340 ipw_tx_intr(struct ipw_softc *sc)
1341 {
1342         struct ipw_soft_bd *sbd;
1343         uint32_t r, i;
1344
1345         if (!(sc->flags & IPW_FLAG_FW_INITED))
1346                 return;
1347
1348         r = CSR_READ_4(sc, IPW_CSR_TX_READ);
1349
1350         for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) {
1351                 sbd = &sc->stbd_list[i];
1352                 ipw_release_sbd(sc, sbd);
1353                 sc->txfree++;
1354         }
1355
1356         /* remember what the firmware has processed */
1357         sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1;
1358
1359         ipw_start(sc);
1360 }
1361
1362 static void
1363 ipw_fatal_error_intr(struct ipw_softc *sc)
1364 {
1365         struct ieee80211com *ic = &sc->sc_ic;
1366         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1367
1368         device_printf(sc->sc_dev, "firmware error\n");
1369         if (vap != NULL) {
1370                 IPW_UNLOCK(sc);
1371                 ieee80211_cancel_scan(vap);
1372                 IPW_LOCK(sc);
1373         }
1374         ieee80211_runtask(ic, &sc->sc_init_task);
1375 }
1376
1377 static void
1378 ipw_intr(void *arg)
1379 {
1380         struct ipw_softc *sc = arg;
1381         uint32_t r;
1382
1383         IPW_LOCK(sc);
1384
1385         r = CSR_READ_4(sc, IPW_CSR_INTR);
1386         if (r == 0 || r == 0xffffffff)
1387                 goto done;
1388
1389         /* disable interrupts */
1390         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1391
1392         /* acknowledge all interrupts */
1393         CSR_WRITE_4(sc, IPW_CSR_INTR, r);
1394
1395         if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) {
1396                 ipw_fatal_error_intr(sc);
1397                 goto done;
1398         }
1399
1400         if (r & IPW_INTR_FW_INIT_DONE)
1401                 wakeup(sc);
1402
1403         if (r & IPW_INTR_RX_TRANSFER)
1404                 ipw_rx_intr(sc);
1405
1406         if (r & IPW_INTR_TX_TRANSFER)
1407                 ipw_tx_intr(sc);
1408
1409         /* re-enable interrupts */
1410         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1411 done:
1412         IPW_UNLOCK(sc);
1413 }
1414
1415 static void
1416 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1417 {
1418         if (error != 0)
1419                 return;
1420
1421         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1422
1423         *(bus_addr_t *)arg = segs[0].ds_addr;
1424 }
1425
1426 static const char *
1427 ipw_cmdname(int cmd)
1428 {
1429         static const struct {
1430                 int     cmd;
1431                 const char *name;
1432         } cmds[] = {
1433                 { IPW_CMD_ADD_MULTICAST,        "ADD_MULTICAST" },
1434                 { IPW_CMD_BROADCAST_SCAN,       "BROADCAST_SCAN" },
1435                 { IPW_CMD_DISABLE,              "DISABLE" },
1436                 { IPW_CMD_DISABLE_PHY,          "DISABLE_PHY" },
1437                 { IPW_CMD_ENABLE,               "ENABLE" },
1438                 { IPW_CMD_PREPARE_POWER_DOWN,   "PREPARE_POWER_DOWN" },
1439                 { IPW_CMD_SET_BASIC_TX_RATES,   "SET_BASIC_TX_RATES" },
1440                 { IPW_CMD_SET_BEACON_INTERVAL,  "SET_BEACON_INTERVAL" },
1441                 { IPW_CMD_SET_CHANNEL,          "SET_CHANNEL" },
1442                 { IPW_CMD_SET_CONFIGURATION,    "SET_CONFIGURATION" },
1443                 { IPW_CMD_SET_DESIRED_BSSID,    "SET_DESIRED_BSSID" },
1444                 { IPW_CMD_SET_ESSID,            "SET_ESSID" },
1445                 { IPW_CMD_SET_FRAG_THRESHOLD,   "SET_FRAG_THRESHOLD" },
1446                 { IPW_CMD_SET_MAC_ADDRESS,      "SET_MAC_ADDRESS" },
1447                 { IPW_CMD_SET_MANDATORY_BSSID,  "SET_MANDATORY_BSSID" },
1448                 { IPW_CMD_SET_MODE,             "SET_MODE" },
1449                 { IPW_CMD_SET_MSDU_TX_RATES,    "SET_MSDU_TX_RATES" },
1450                 { IPW_CMD_SET_POWER_MODE,       "SET_POWER_MODE" },
1451                 { IPW_CMD_SET_RTS_THRESHOLD,    "SET_RTS_THRESHOLD" },
1452                 { IPW_CMD_SET_SCAN_OPTIONS,     "SET_SCAN_OPTIONS" },
1453                 { IPW_CMD_SET_SECURITY_INFO,    "SET_SECURITY_INFO" },
1454                 { IPW_CMD_SET_TX_POWER_INDEX,   "SET_TX_POWER_INDEX" },
1455                 { IPW_CMD_SET_TX_RATES,         "SET_TX_RATES" },
1456                 { IPW_CMD_SET_WEP_FLAGS,        "SET_WEP_FLAGS" },
1457                 { IPW_CMD_SET_WEP_KEY,          "SET_WEP_KEY" },
1458                 { IPW_CMD_SET_WEP_KEY_INDEX,    "SET_WEP_KEY_INDEX" },
1459                 { IPW_CMD_SET_WPA_IE,           "SET_WPA_IE" },
1460
1461         };
1462         static char buf[12];
1463         int i;
1464
1465         for (i = 0; i < nitems(cmds); i++)
1466                 if (cmds[i].cmd == cmd)
1467                         return cmds[i].name;
1468         snprintf(buf, sizeof(buf), "%u", cmd);
1469         return buf;
1470 }
1471
1472 /*
1473  * Send a command to the firmware and wait for the acknowledgement.
1474  */
1475 static int
1476 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len)
1477 {
1478         struct ipw_soft_bd *sbd;
1479         bus_addr_t physaddr;
1480         int error;
1481
1482         IPW_LOCK_ASSERT(sc);
1483
1484         if (sc->flags & IPW_FLAG_BUSY) {
1485                 device_printf(sc->sc_dev, "%s: %s not sent, busy\n",
1486                         __func__, ipw_cmdname(type));
1487                 return EAGAIN;
1488         }
1489         sc->flags |= IPW_FLAG_BUSY;
1490
1491         sbd = &sc->stbd_list[sc->txcur];
1492
1493         error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd,
1494             sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0);
1495         if (error != 0) {
1496                 device_printf(sc->sc_dev, "could not map command DMA memory\n");
1497                 sc->flags &= ~IPW_FLAG_BUSY;
1498                 return error;
1499         }
1500
1501         sc->cmd.type = htole32(type);
1502         sc->cmd.subtype = 0;
1503         sc->cmd.len = htole32(len);
1504         sc->cmd.seq = 0;
1505         memcpy(sc->cmd.data, data, len);
1506
1507         sbd->type = IPW_SBD_TYPE_COMMAND;
1508         sbd->bd->physaddr = htole32(physaddr);
1509         sbd->bd->len = htole32(sizeof (struct ipw_cmd));
1510         sbd->bd->nfrag = 1;
1511         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND |
1512             IPW_BD_FLAG_TX_LAST_FRAGMENT;
1513
1514         bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE);
1515         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1516
1517 #ifdef IPW_DEBUG
1518         if (ipw_debug >= 4) {
1519                 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type,
1520                     0, 0, len);
1521                 /* Print the data buffer in the higher debug level */
1522                 if (ipw_debug >= 9 && len > 0) {
1523                         printf(" data: 0x");
1524                         for (int i = 1; i <= len; i++)
1525                                 printf("%1D", (u_char *)data + len - i, "");
1526                 }
1527                 printf("\n");
1528         }
1529 #endif
1530
1531         /* kick firmware */
1532         sc->txfree--;
1533         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1534         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1535
1536         /* wait at most one second for command to complete */
1537         error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz);
1538         if (error != 0) {
1539                 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n",
1540                     __func__, ipw_cmdname(type), error);
1541                 sc->flags &= ~IPW_FLAG_BUSY;
1542                 return (error);
1543         }
1544         return (0);
1545 }
1546
1547 static int
1548 ipw_tx_start(struct ipw_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1549 {
1550         struct ieee80211com *ic = &sc->sc_ic;
1551         struct ieee80211vap *vap = ni->ni_vap;
1552         struct ieee80211_frame *wh;
1553         struct ipw_soft_bd *sbd;
1554         struct ipw_soft_hdr *shdr;
1555         struct ipw_soft_buf *sbuf;
1556         struct ieee80211_key *k;
1557         struct mbuf *mnew;
1558         bus_dma_segment_t segs[IPW_MAX_NSEG];
1559         bus_addr_t physaddr;
1560         int nsegs, error, i;
1561
1562         wh = mtod(m0, struct ieee80211_frame *);
1563
1564         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1565                 k = ieee80211_crypto_encap(ni, m0);
1566                 if (k == NULL) {
1567                         m_freem(m0);
1568                         return ENOBUFS;
1569                 }
1570                 /* packet header may have moved, reset our local pointer */
1571                 wh = mtod(m0, struct ieee80211_frame *);
1572         }
1573
1574         if (ieee80211_radiotap_active_vap(vap)) {
1575                 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap;
1576
1577                 tap->wt_flags = 0;
1578
1579                 ieee80211_radiotap_tx(vap, m0);
1580         }
1581
1582         shdr = SLIST_FIRST(&sc->free_shdr);
1583         sbuf = SLIST_FIRST(&sc->free_sbuf);
1584         KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool"));
1585
1586         shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND);
1587         shdr->hdr.subtype = 0;
1588         shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) ? 1 : 0;
1589         shdr->hdr.encrypt = 0;
1590         shdr->hdr.keyidx = 0;
1591         shdr->hdr.keysz = 0;
1592         shdr->hdr.fragmentsz = 0;
1593         IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2);
1594         if (ic->ic_opmode == IEEE80211_M_STA)
1595                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3);
1596         else
1597                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1);
1598
1599         /* trim IEEE802.11 header */
1600         m_adj(m0, sizeof (struct ieee80211_frame));
1601
1602         error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs,
1603             &nsegs, 0);
1604         if (error != 0 && error != EFBIG) {
1605                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1606                     error);
1607                 m_freem(m0);
1608                 return error;
1609         }
1610         if (error != 0) {
1611                 mnew = m_defrag(m0, M_NOWAIT);
1612                 if (mnew == NULL) {
1613                         device_printf(sc->sc_dev,
1614                             "could not defragment mbuf\n");
1615                         m_freem(m0);
1616                         return ENOBUFS;
1617                 }
1618                 m0 = mnew;
1619
1620                 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0,
1621                     segs, &nsegs, 0);
1622                 if (error != 0) {
1623                         device_printf(sc->sc_dev,
1624                             "could not map mbuf (error %d)\n", error);
1625                         m_freem(m0);
1626                         return error;
1627                 }
1628         }
1629
1630         error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr,
1631             sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0);
1632         if (error != 0) {
1633                 device_printf(sc->sc_dev, "could not map header DMA memory\n");
1634                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1635                 m_freem(m0);
1636                 return error;
1637         }
1638
1639         SLIST_REMOVE_HEAD(&sc->free_sbuf, next);
1640         SLIST_REMOVE_HEAD(&sc->free_shdr, next);
1641
1642         sbd = &sc->stbd_list[sc->txcur];
1643         sbd->type = IPW_SBD_TYPE_HEADER;
1644         sbd->priv = shdr;
1645         sbd->bd->physaddr = htole32(physaddr);
1646         sbd->bd->len = htole32(sizeof (struct ipw_hdr));
1647         sbd->bd->nfrag = 1 + nsegs;
1648         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 |
1649             IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1650
1651         DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n",
1652             shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted,
1653             shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr,
1654             ":"));
1655
1656         sc->txfree--;
1657         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1658
1659         sbuf->m = m0;
1660         sbuf->ni = ni;
1661
1662         for (i = 0; i < nsegs; i++) {
1663                 sbd = &sc->stbd_list[sc->txcur];
1664
1665                 sbd->bd->physaddr = htole32(segs[i].ds_addr);
1666                 sbd->bd->len = htole32(segs[i].ds_len);
1667                 sbd->bd->nfrag = 0;
1668                 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3;
1669                 if (i == nsegs - 1) {
1670                         sbd->type = IPW_SBD_TYPE_DATA;
1671                         sbd->priv = sbuf;
1672                         sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT;
1673                 } else {
1674                         sbd->type = IPW_SBD_TYPE_NOASSOC;
1675                         sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1676                 }
1677
1678                 DPRINTFN(5, ("sending fragment (%d)\n", i));
1679
1680                 sc->txfree--;
1681                 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1682         }
1683
1684         bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE);
1685         bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE);
1686         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1687
1688         /* kick firmware */
1689         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1690
1691         return 0;
1692 }
1693
1694 static int
1695 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1696         const struct ieee80211_bpf_params *params)
1697 {
1698         /* no support; just discard */
1699         m_freem(m);
1700         ieee80211_free_node(ni);
1701         return 0;
1702 }
1703
1704 static int
1705 ipw_transmit(struct ieee80211com *ic, struct mbuf *m)
1706 {
1707         struct ipw_softc *sc = ic->ic_softc;
1708         int error;
1709
1710         IPW_LOCK(sc);
1711         if ((sc->flags & IPW_FLAG_RUNNING) == 0) {
1712                 IPW_UNLOCK(sc);
1713                 return (ENXIO);
1714         }
1715         error = mbufq_enqueue(&sc->sc_snd, m);
1716         if (error) {
1717                 IPW_UNLOCK(sc);
1718                 return (error);
1719         }
1720         ipw_start(sc);
1721         IPW_UNLOCK(sc);
1722         return (0);
1723 }
1724
1725 static void
1726 ipw_start(struct ipw_softc *sc)
1727 {
1728         struct ieee80211_node *ni;
1729         struct mbuf *m;
1730
1731         IPW_LOCK_ASSERT(sc);
1732
1733         while (sc->txfree < 1 + IPW_MAX_NSEG &&
1734             (m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
1735                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1736                 if (ipw_tx_start(sc, m, ni) != 0) {
1737                         if_inc_counter(ni->ni_vap->iv_ifp,
1738                             IFCOUNTER_OERRORS, 1);
1739                         ieee80211_free_node(ni);
1740                         break;
1741                 }
1742                 /* start watchdog timer */
1743                 sc->sc_tx_timer = 5;
1744         }
1745 }
1746
1747 static void
1748 ipw_watchdog(void *arg)
1749 {
1750         struct ipw_softc *sc = arg;
1751         struct ieee80211com *ic = &sc->sc_ic;
1752
1753         IPW_LOCK_ASSERT(sc);
1754
1755         if (sc->sc_tx_timer > 0) {
1756                 if (--sc->sc_tx_timer == 0) {
1757                         device_printf(sc->sc_dev, "device timeout\n");
1758                         counter_u64_add(ic->ic_oerrors, 1);
1759                         taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1760                 }
1761         }
1762         if (sc->sc_scan_timer > 0) {
1763                 if (--sc->sc_scan_timer == 0) {
1764                         DPRINTFN(3, ("Scan timeout\n"));
1765                         /* End the scan */
1766                         if (sc->flags & IPW_FLAG_SCANNING) {
1767                                 IPW_UNLOCK(sc);
1768                                 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps));
1769                                 IPW_LOCK(sc);
1770                                 sc->flags &= ~IPW_FLAG_SCANNING;
1771                         }
1772                 }
1773         }
1774         if (sc->flags & IPW_FLAG_RUNNING)
1775                 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
1776 }
1777
1778 static void
1779 ipw_parent(struct ieee80211com *ic)
1780 {
1781         struct ipw_softc *sc = ic->ic_softc;
1782         int startall = 0;
1783
1784         IPW_LOCK(sc);
1785         if (ic->ic_nrunning > 0) {
1786                 if (!(sc->flags & IPW_FLAG_RUNNING)) {
1787                         ipw_init_locked(sc);
1788                         startall = 1;
1789                 }
1790         } else if (sc->flags & IPW_FLAG_RUNNING)
1791                 ipw_stop_locked(sc);
1792         IPW_UNLOCK(sc);
1793         if (startall)
1794                 ieee80211_start_all(ic);
1795 }
1796
1797 static void
1798 ipw_stop_master(struct ipw_softc *sc)
1799 {
1800         uint32_t tmp;
1801         int ntries;
1802
1803         /* disable interrupts */
1804         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1805
1806         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER);
1807         for (ntries = 0; ntries < 50; ntries++) {
1808                 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED)
1809                         break;
1810                 DELAY(10);
1811         }
1812         if (ntries == 50)
1813                 device_printf(sc->sc_dev, "timeout waiting for master\n");
1814
1815         tmp = CSR_READ_4(sc, IPW_CSR_RST);
1816         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET);
1817
1818         /* Clear all flags except the following */
1819         sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH;
1820 }
1821
1822 static int
1823 ipw_reset(struct ipw_softc *sc)
1824 {
1825         uint32_t tmp;
1826         int ntries;
1827
1828         ipw_stop_master(sc);
1829
1830         /* move adapter to D0 state */
1831         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1832         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1833
1834         /* wait for clock stabilization */
1835         for (ntries = 0; ntries < 1000; ntries++) {
1836                 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY)
1837                         break;
1838                 DELAY(200);
1839         }
1840         if (ntries == 1000)
1841                 return EIO;
1842
1843         tmp =  CSR_READ_4(sc, IPW_CSR_RST);
1844         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET);
1845
1846         DELAY(10);
1847
1848         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1849         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1850
1851         return 0;
1852 }
1853
1854 static int
1855 ipw_waitfordisable(struct ipw_softc *sc, int waitfor)
1856 {
1857         int ms = hz < 1000 ? 1 : hz/10;
1858         int i, error;
1859
1860         for (i = 0; i < 100; i++) {
1861                 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor)
1862                         return 0;
1863                 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms);
1864                 if (error == 0 || error != EWOULDBLOCK)
1865                         return 0;
1866         }
1867         DPRINTF(("%s: timeout waiting for %s\n",
1868                 __func__, waitfor ? "disable" : "enable"));
1869         return ETIMEDOUT;
1870 }
1871
1872 static int
1873 ipw_enable(struct ipw_softc *sc)
1874 {
1875         int error;
1876
1877         if ((sc->flags & IPW_FLAG_ENABLED) == 0) {
1878                 DPRINTF(("Enable adapter\n"));
1879                 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
1880                 if (error != 0)
1881                         return error;
1882                 error = ipw_waitfordisable(sc, 0);
1883                 if (error != 0)
1884                         return error;
1885                 sc->flags |= IPW_FLAG_ENABLED;
1886         }
1887         return 0;
1888 }
1889
1890 static int
1891 ipw_disable(struct ipw_softc *sc)
1892 {
1893         int error;
1894
1895         if (sc->flags & IPW_FLAG_ENABLED) {
1896                 DPRINTF(("Disable adapter\n"));
1897                 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0);
1898                 if (error != 0)
1899                         return error;
1900                 error = ipw_waitfordisable(sc, 1);
1901                 if (error != 0)
1902                         return error;
1903                 sc->flags &= ~IPW_FLAG_ENABLED;
1904         }
1905         return 0;
1906 }
1907
1908 /*
1909  * Upload the microcode to the device.
1910  */
1911 static int
1912 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size)
1913 {
1914         int ntries;
1915
1916         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
1917         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1918
1919         MEM_WRITE_2(sc, 0x220000, 0x0703);
1920         MEM_WRITE_2(sc, 0x220000, 0x0707);
1921
1922         MEM_WRITE_1(sc, 0x210014, 0x72);
1923         MEM_WRITE_1(sc, 0x210014, 0x72);
1924
1925         MEM_WRITE_1(sc, 0x210000, 0x40);
1926         MEM_WRITE_1(sc, 0x210000, 0x00);
1927         MEM_WRITE_1(sc, 0x210000, 0x40);
1928
1929         MEM_WRITE_MULTI_1(sc, 0x210010, uc, size);
1930
1931         MEM_WRITE_1(sc, 0x210000, 0x00);
1932         MEM_WRITE_1(sc, 0x210000, 0x00);
1933         MEM_WRITE_1(sc, 0x210000, 0x80);
1934
1935         MEM_WRITE_2(sc, 0x220000, 0x0703);
1936         MEM_WRITE_2(sc, 0x220000, 0x0707);
1937
1938         MEM_WRITE_1(sc, 0x210014, 0x72);
1939         MEM_WRITE_1(sc, 0x210014, 0x72);
1940
1941         MEM_WRITE_1(sc, 0x210000, 0x00);
1942         MEM_WRITE_1(sc, 0x210000, 0x80);
1943
1944         for (ntries = 0; ntries < 10; ntries++) {
1945                 if (MEM_READ_1(sc, 0x210000) & 1)
1946                         break;
1947                 DELAY(10);
1948         }
1949         if (ntries == 10) {
1950                 device_printf(sc->sc_dev,
1951                     "timeout waiting for ucode to initialize\n");
1952                 return EIO;
1953         }
1954
1955         MEM_WRITE_4(sc, 0x3000e0, 0);
1956
1957         return 0;
1958 }
1959
1960 /* set of macros to handle unaligned little endian data in firmware image */
1961 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
1962 #define GETLE16(p) ((p)[0] | (p)[1] << 8)
1963 static int
1964 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size)
1965 {
1966         const uint8_t *p, *end;
1967         uint32_t tmp, dst;
1968         uint16_t len;
1969         int error;
1970
1971         p = fw;
1972         end = fw + size;
1973         while (p < end) {
1974                 dst = GETLE32(p); p += 4;
1975                 len = GETLE16(p); p += 2;
1976
1977                 ipw_write_mem_1(sc, dst, p, len);
1978                 p += len;
1979         }
1980
1981         CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK |
1982             IPW_IO_LED_OFF);
1983
1984         /* enable interrupts */
1985         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1986
1987         /* kick the firmware */
1988         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1989
1990         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1991         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY);
1992
1993         /* wait at most one second for firmware initialization to complete */
1994         if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) {
1995                 device_printf(sc->sc_dev, "timeout waiting for firmware "
1996                     "initialization to complete\n");
1997                 return error;
1998         }
1999
2000         tmp = CSR_READ_4(sc, IPW_CSR_IO);
2001         CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK |
2002             IPW_IO_GPIO3_MASK);
2003
2004         return 0;
2005 }
2006
2007 static int
2008 ipw_setwepkeys(struct ipw_softc *sc)
2009 {
2010         struct ieee80211com *ic = &sc->sc_ic;
2011         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2012         struct ipw_wep_key wepkey;
2013         struct ieee80211_key *wk;
2014         int error, i;
2015
2016         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2017                 wk = &vap->iv_nw_keys[i];
2018
2019                 if (wk->wk_cipher == NULL ||
2020                     wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP)
2021                         continue;
2022
2023                 wepkey.idx = i;
2024                 wepkey.len = wk->wk_keylen;
2025                 memset(wepkey.key, 0, sizeof wepkey.key);
2026                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2027                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2028                     wepkey.len));
2029                 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey,
2030                     sizeof wepkey);
2031                 if (error != 0)
2032                         return error;
2033         }
2034         return 0;
2035 }
2036
2037 static int
2038 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen)
2039 {
2040         struct ipw_wpa_ie wpaie;
2041
2042         memset(&wpaie, 0, sizeof(wpaie));
2043         wpaie.len = htole32(ielen);
2044         /* XXX verify length */
2045         memcpy(&wpaie.ie, ie, ielen);
2046         DPRINTF(("Setting WPA IE\n"));
2047         return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie));
2048 }
2049
2050 static int
2051 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid)
2052 {
2053         static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
2054
2055         if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) {
2056                 DPRINTF(("Setting mandatory BSSID to null\n"));
2057                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0);
2058         } else {
2059                 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":"));
2060                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID,
2061                         bssid, IEEE80211_ADDR_LEN);
2062         }
2063 }
2064
2065 static int
2066 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen)
2067 {
2068         if (ssidlen == 0) {
2069                 /*
2070                  * A bug in the firmware breaks the ``don't associate''
2071                  * bit in the scan options command.  To compensate for
2072                  * this install a bogus ssid when no ssid is specified
2073                  * so the firmware won't try to associate.
2074                  */
2075                 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n"));
2076                 return ipw_cmd(sc, IPW_CMD_SET_ESSID,
2077                         "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27"
2078                         "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31"
2079                         "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b"
2080                         "\x3c\x3d", IEEE80211_NWID_LEN);
2081         } else {
2082 #ifdef IPW_DEBUG
2083                 if (ipw_debug > 0) {
2084                         printf("Setting ESSID to ");
2085                         ieee80211_print_essid(ssid, ssidlen);
2086                         printf("\n");
2087                 }
2088 #endif
2089                 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen);
2090         }
2091 }
2092
2093 static int
2094 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags)
2095 {
2096         struct ipw_scan_options opts;
2097
2098         DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags));
2099         opts.channels = htole32(chanmask);
2100         opts.flags = htole32(flags);
2101         return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts));
2102 }
2103
2104 static int
2105 ipw_scan(struct ipw_softc *sc)
2106 {
2107         uint32_t params;
2108         int error;
2109
2110         DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags));
2111
2112         if (sc->flags & IPW_FLAG_SCANNING)
2113                 return (EBUSY);
2114         sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK;
2115
2116         /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */
2117         error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE);
2118         if (error != 0)
2119                 goto done;
2120
2121         /*
2122          * Setup null/bogus ssid so firmware doesn't use any previous
2123          * ssid to try and associate.  This is because the ``don't
2124          * associate'' option bit is broken (sigh).
2125          */
2126         error = ipw_setssid(sc, NULL, 0);
2127         if (error != 0)
2128                 goto done;
2129
2130         /*
2131          * NB: the adapter may be disabled on association lost;
2132          *     if so just re-enable it to kick off scanning.
2133          */
2134         DPRINTF(("Starting scan\n"));
2135         sc->sc_scan_timer = 3;
2136         if (sc->flags & IPW_FLAG_ENABLED) {
2137                 params = 0;                             /* XXX? */
2138                 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN,
2139                                 &params, sizeof(params));
2140         } else
2141                 error = ipw_enable(sc);
2142 done:
2143         if (error != 0) {
2144                 DPRINTF(("Scan failed\n"));
2145                 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK);
2146         }
2147         return (error);
2148 }
2149
2150 static int
2151 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan)
2152 {
2153         struct ieee80211com *ic = &sc->sc_ic;
2154         uint32_t data;
2155         int error;
2156
2157         data = htole32(ieee80211_chan2ieee(ic, chan));
2158         DPRINTF(("Setting channel to %u\n", le32toh(data)));
2159         error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data);
2160         if (error == 0)
2161                 ipw_setcurchan(sc, chan);
2162         return error;
2163 }
2164
2165 static void
2166 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2167 {
2168         struct ipw_softc *sc = ic->ic_softc;
2169         struct ieee80211_node *ni = vap->iv_bss;
2170         struct ipw_security security;
2171         uint32_t data;
2172         int error;
2173
2174         IPW_LOCK(sc);
2175         error = ipw_disable(sc);
2176         if (error != 0)
2177                 goto done;
2178
2179         memset(&security, 0, sizeof security);
2180         security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ?
2181             IPW_AUTH_SHARED : IPW_AUTH_OPEN;
2182         security.ciphers = htole32(IPW_CIPHER_NONE);
2183         DPRINTF(("Setting authmode to %u\n", security.authmode));
2184         error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security,
2185             sizeof security);
2186         if (error != 0)
2187                 goto done;
2188
2189         data = htole32(vap->iv_rtsthreshold);
2190         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2191         error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2192         if (error != 0)
2193                 goto done;
2194
2195         data = htole32(vap->iv_fragthreshold);
2196         DPRINTF(("Setting frag threshold to %u\n", le32toh(data)));
2197         error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2198         if (error != 0)
2199                 goto done;
2200
2201         if (vap->iv_flags & IEEE80211_F_PRIVACY) {
2202                 error = ipw_setwepkeys(sc);
2203                 if (error != 0)
2204                         goto done;
2205
2206                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) {
2207                         data = htole32(vap->iv_def_txkey);
2208                         DPRINTF(("Setting wep tx key index to %u\n",
2209                                 le32toh(data)));
2210                         error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data,
2211                             sizeof data);
2212                         if (error != 0)
2213                                 goto done;
2214                 }
2215         }
2216
2217         data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0);
2218         DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data)));
2219         error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data);
2220         if (error != 0)
2221                 goto done;
2222
2223         error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen);
2224         if (error != 0)
2225                 goto done;
2226
2227         error = ipw_setbssid(sc, ni->ni_bssid);
2228         if (error != 0)
2229                 goto done;
2230
2231         if (vap->iv_appie_wpa != NULL) {
2232                 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2233                 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len);
2234                 if (error != 0)
2235                         goto done;
2236         }
2237         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2238                 error = ipw_setchannel(sc, ni->ni_chan);
2239                 if (error != 0)
2240                         goto done;
2241         }
2242
2243         /* lock scan to ap's channel and enable associate */
2244         error = ipw_setscanopts(sc,
2245             1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0);
2246         if (error != 0)
2247                 goto done;
2248
2249         error = ipw_enable(sc);         /* finally, enable adapter */
2250         if (error == 0)
2251                 sc->flags |= IPW_FLAG_ASSOCIATING;
2252 done:
2253         IPW_UNLOCK(sc);
2254 }
2255
2256 static void
2257 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2258 {
2259         struct ieee80211_node *ni = vap->iv_bss;
2260         struct ipw_softc *sc = ic->ic_softc;
2261
2262         IPW_LOCK(sc);
2263         DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":"));
2264         /*
2265          * NB: don't try to do this if ipw_stop_master has
2266          *     shutdown the firmware and disabled interrupts.
2267          */
2268         if (sc->flags & IPW_FLAG_FW_INITED) {
2269                 sc->flags &= ~IPW_FLAG_ASSOCIATED;
2270                 /*
2271                  * NB: firmware currently ignores bssid parameter, but
2272                  *     supply it in case this changes (follow linux driver).
2273                  */
2274                 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE,
2275                         ni->ni_bssid, IEEE80211_ADDR_LEN);
2276         }
2277         IPW_UNLOCK(sc);
2278 }
2279
2280 /*
2281  * Handler for sc_init_task.  This is a simple wrapper around ipw_init().
2282  * It is called on firmware panics or on watchdog timeouts.
2283  */
2284 static void
2285 ipw_init_task(void *context, int pending)
2286 {
2287         ipw_init(context);
2288 }
2289
2290 static void
2291 ipw_init(void *priv)
2292 {
2293         struct ipw_softc *sc = priv;
2294         struct ieee80211com *ic = &sc->sc_ic;
2295
2296         IPW_LOCK(sc);
2297         ipw_init_locked(sc);
2298         IPW_UNLOCK(sc);
2299
2300         if (sc->flags & IPW_FLAG_RUNNING)
2301                 ieee80211_start_all(ic);                /* start all vap's */
2302 }
2303
2304 static void
2305 ipw_init_locked(struct ipw_softc *sc)
2306 {
2307         struct ieee80211com *ic = &sc->sc_ic;
2308         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2309         const struct firmware *fp;
2310         const struct ipw_firmware_hdr *hdr;
2311         const char *fw;
2312
2313         IPW_LOCK_ASSERT(sc);
2314
2315         DPRINTF(("%s: state %s flags 0x%x\n", __func__,
2316                 ieee80211_state_name[vap->iv_state], sc->flags));
2317
2318         /*
2319          * Avoid re-entrant calls.  We need to release the mutex in ipw_init()
2320          * when loading the firmware and we don't want to be called during this
2321          * operation.
2322          */
2323         if (sc->flags & IPW_FLAG_INIT_LOCKED)
2324                 return;
2325         sc->flags |= IPW_FLAG_INIT_LOCKED;
2326
2327         ipw_stop_locked(sc);
2328
2329         if (ipw_reset(sc) != 0) {
2330                 device_printf(sc->sc_dev, "could not reset adapter\n");
2331                 goto fail;
2332         }
2333
2334         if (sc->sc_firmware == NULL) {
2335                 device_printf(sc->sc_dev, "no firmware\n");
2336                 goto fail;
2337         }
2338         /* NB: consistency already checked on load */
2339         fp = sc->sc_firmware;
2340         hdr = (const struct ipw_firmware_hdr *)fp->data;
2341
2342         DPRINTF(("Loading firmware image '%s'\n", fp->name));
2343         fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz);
2344         if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) {
2345                 device_printf(sc->sc_dev, "could not load microcode\n");
2346                 goto fail;
2347         }
2348
2349         ipw_stop_master(sc);
2350
2351         /*
2352          * Setup tx, rx and status rings.
2353          */
2354         sc->txold = IPW_NTBD - 1;
2355         sc->txcur = 0;
2356         sc->txfree = IPW_NTBD - 2;
2357         sc->rxcur = IPW_NRBD - 1;
2358
2359         CSR_WRITE_4(sc, IPW_CSR_TX_BASE,  sc->tbd_phys);
2360         CSR_WRITE_4(sc, IPW_CSR_TX_SIZE,  IPW_NTBD);
2361         CSR_WRITE_4(sc, IPW_CSR_TX_READ,  0);
2362         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
2363
2364         CSR_WRITE_4(sc, IPW_CSR_RX_BASE,  sc->rbd_phys);
2365         CSR_WRITE_4(sc, IPW_CSR_RX_SIZE,  IPW_NRBD);
2366         CSR_WRITE_4(sc, IPW_CSR_RX_READ,  0);
2367         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
2368
2369         CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys);
2370
2371         fw = (const char *)fp->data + sizeof *hdr;
2372         if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) {
2373                 device_printf(sc->sc_dev, "could not load firmware\n");
2374                 goto fail;
2375         }
2376
2377         sc->flags |= IPW_FLAG_FW_INITED;
2378
2379         /* retrieve information tables base addresses */
2380         sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE);
2381         sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE);
2382
2383         ipw_write_table1(sc, IPW_INFO_LOCK, 0);
2384
2385         if (ipw_config(sc) != 0) {
2386                 device_printf(sc->sc_dev, "device configuration failed\n");
2387                 goto fail;
2388         }
2389
2390         callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
2391         sc->flags |= IPW_FLAG_RUNNING;
2392         sc->flags &= ~IPW_FLAG_INIT_LOCKED;
2393         return;
2394
2395 fail:
2396         ipw_stop_locked(sc);
2397         sc->flags &= ~IPW_FLAG_INIT_LOCKED;
2398 }
2399
2400 static int
2401 ipw_config(struct ipw_softc *sc)
2402 {
2403         struct ieee80211com *ic = &sc->sc_ic;
2404         struct ipw_configuration config;
2405         uint32_t data;
2406         int error;
2407
2408         error = ipw_disable(sc);
2409         if (error != 0)
2410                 return error;
2411
2412         switch (ic->ic_opmode) {
2413         case IEEE80211_M_STA:
2414         case IEEE80211_M_HOSTAP:
2415         case IEEE80211_M_WDS:           /* XXX */
2416                 data = htole32(IPW_MODE_BSS);
2417                 break;
2418         case IEEE80211_M_IBSS:
2419         case IEEE80211_M_AHDEMO:
2420                 data = htole32(IPW_MODE_IBSS);
2421                 break;
2422         case IEEE80211_M_MONITOR:
2423                 data = htole32(IPW_MODE_MONITOR);
2424                 break;
2425         default:
2426                 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
2427                 return EINVAL;
2428         }
2429         DPRINTF(("Setting mode to %u\n", le32toh(data)));
2430         error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data);
2431         if (error != 0)
2432                 return error;
2433
2434         if (ic->ic_opmode == IEEE80211_M_IBSS ||
2435             ic->ic_opmode == IEEE80211_M_MONITOR) {
2436                 error = ipw_setchannel(sc, ic->ic_curchan);
2437                 if (error != 0)
2438                         return error;
2439         }
2440
2441         if (ic->ic_opmode == IEEE80211_M_MONITOR)
2442                 return ipw_enable(sc);
2443
2444         config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK |
2445             IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE);
2446         if (ic->ic_opmode == IEEE80211_M_IBSS)
2447                 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START);
2448         if (ic->ic_promisc > 0)
2449                 config.flags |= htole32(IPW_CFG_PROMISCUOUS);
2450         config.bss_chan = htole32(0x3fff); /* channels 1-14 */
2451         config.ibss_chan = htole32(0x7ff); /* channels 1-11 */
2452         DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags)));
2453         error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config);
2454         if (error != 0)
2455                 return error;
2456
2457         data = htole32(0xf); /* 1, 2, 5.5, 11 */
2458         DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data)));
2459         error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data);
2460         if (error != 0)
2461                 return error;
2462
2463         /* Use the same rate set */
2464         DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data)));
2465         error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data);
2466         if (error != 0)
2467                 return error;
2468
2469         /* Use the same rate set */
2470         DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data)));
2471         error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data);
2472         if (error != 0)
2473                 return error;
2474
2475         data = htole32(IPW_POWER_MODE_CAM);
2476         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2477         error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data);
2478         if (error != 0)
2479                 return error;
2480
2481         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2482                 data = htole32(32); /* default value */
2483                 DPRINTF(("Setting tx power index to %u\n", le32toh(data)));
2484                 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data,
2485                     sizeof data);
2486                 if (error != 0)
2487                         return error;
2488         }
2489
2490         return 0;
2491 }
2492
2493 static void
2494 ipw_stop(void *priv)
2495 {
2496         struct ipw_softc *sc = priv;
2497
2498         IPW_LOCK(sc);
2499         ipw_stop_locked(sc);
2500         IPW_UNLOCK(sc);
2501 }
2502
2503 static void
2504 ipw_stop_locked(struct ipw_softc *sc)
2505 {
2506         int i;
2507
2508         IPW_LOCK_ASSERT(sc);
2509
2510         callout_stop(&sc->sc_wdtimer);
2511         ipw_stop_master(sc);
2512
2513         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET);
2514
2515         /*
2516          * Release tx buffers.
2517          */
2518         for (i = 0; i < IPW_NTBD; i++)
2519                 ipw_release_sbd(sc, &sc->stbd_list[i]);
2520
2521         sc->sc_tx_timer = 0;
2522         sc->flags &= ~IPW_FLAG_RUNNING;
2523 }
2524
2525 static int
2526 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)
2527 {
2528         struct ipw_softc *sc = arg1;
2529         uint32_t i, size, buf[256];
2530
2531         memset(buf, 0, sizeof buf);
2532
2533         if (!(sc->flags & IPW_FLAG_FW_INITED))
2534                 return SYSCTL_OUT(req, buf, sizeof buf);
2535
2536         CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base);
2537
2538         size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256);
2539         for (i = 1; i < size; i++)
2540                 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA));
2541
2542         return SYSCTL_OUT(req, buf, size);
2543 }
2544
2545 static int
2546 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)
2547 {
2548         struct ipw_softc *sc = arg1;
2549         int val;
2550
2551         val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) &&
2552                 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED));
2553
2554         return SYSCTL_OUT(req, &val, sizeof val);
2555 }
2556
2557 static uint32_t
2558 ipw_read_table1(struct ipw_softc *sc, uint32_t off)
2559 {
2560         return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off));
2561 }
2562
2563 static void
2564 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info)
2565 {
2566         MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info);
2567 }
2568
2569 #if 0
2570 static int
2571 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len)
2572 {
2573         uint32_t addr, info;
2574         uint16_t count, size;
2575         uint32_t total;
2576
2577         /* addr[4] + count[2] + size[2] */
2578         addr = MEM_READ_4(sc, sc->table2_base + off);
2579         info = MEM_READ_4(sc, sc->table2_base + off + 4);
2580
2581         count = info >> 16;
2582         size = info & 0xffff;
2583         total = count * size;
2584
2585         if (total > *len) {
2586                 *len = total;
2587                 return EINVAL;
2588         }
2589
2590         *len = total;
2591         ipw_read_mem_1(sc, addr, buf, total);
2592
2593         return 0;
2594 }
2595
2596 static void
2597 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2598     bus_size_t count)
2599 {
2600         for (; count > 0; offset++, datap++, count--) {
2601                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2602                 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3));
2603         }
2604 }
2605 #endif
2606
2607 static void
2608 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap,
2609     bus_size_t count)
2610 {
2611         for (; count > 0; offset++, datap++, count--) {
2612                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2613                 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap);
2614         }
2615 }
2616
2617 static void
2618 ipw_scan_start(struct ieee80211com *ic)
2619 {
2620         struct ipw_softc *sc = ic->ic_softc;
2621
2622         IPW_LOCK(sc);
2623         ipw_scan(sc);
2624         IPW_UNLOCK(sc);
2625 }
2626
2627 static void
2628 ipw_getradiocaps(struct ieee80211com *ic,
2629     int maxchans, int *nchans, struct ieee80211_channel chans[])
2630 {
2631         struct ipw_softc *sc = ic->ic_softc;
2632         uint8_t bands[IEEE80211_MODE_BYTES];
2633         int i;
2634
2635         memset(bands, 0, sizeof(bands));
2636         setbit(bands, IEEE80211_MODE_11B);
2637
2638         for (i = 1; i < 16; i++) {
2639                 if (sc->chanmask & (1 << i)) {
2640                         ieee80211_add_channel(chans, maxchans, nchans,
2641                             i, 0, 0, 0, bands);
2642                 }
2643         }
2644
2645 }
2646
2647 static void
2648 ipw_set_channel(struct ieee80211com *ic)
2649 {
2650         struct ipw_softc *sc = ic->ic_softc;
2651
2652         IPW_LOCK(sc);
2653         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2654                 ipw_disable(sc);
2655                 ipw_setchannel(sc, ic->ic_curchan);
2656                 ipw_enable(sc);
2657         }
2658         IPW_UNLOCK(sc);
2659 }
2660
2661 static void
2662 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
2663 {
2664         /* NB: all channels are scanned at once */
2665 }
2666
2667 static void
2668 ipw_scan_mindwell(struct ieee80211_scan_state *ss)
2669 {
2670         /* NB: don't try to abort scan; wait for firmware to finish */
2671 }
2672
2673 static void
2674 ipw_scan_end(struct ieee80211com *ic)
2675 {
2676         struct ipw_softc *sc = ic->ic_softc;
2677
2678         IPW_LOCK(sc);
2679         sc->flags &= ~IPW_FLAG_SCANNING;
2680         IPW_UNLOCK(sc);
2681 }