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 MODULE_PNP_INFO("U16:vendor;U16:device;D:#", pci, ipw, ipw_ident_table,
 206     nitems(ipw_ident_table) - 1);
 207
 208 MODULE_VERSION(ipw, 1);
 209
 210 static int
 211 ipw_probe(device_t dev)
 212 {
 213         const struct ipw_ident *ident;
 214
 215         for (ident = ipw_ident_table; ident->name != NULL; ident++) {
 216                 if (pci_get_vendor(dev) == ident->vendor &&
 217                     pci_get_device(dev) == ident->device) {
 218                         device_set_desc(dev, ident->name);
 219                         return (BUS_PROBE_DEFAULT);
 220                 }
 221         }
 222         return ENXIO;
 223 }
 224
 225 /* Base Address Register */
 226 static int
 227 ipw_attach(device_t dev)
 228 {
 229         struct ipw_softc *sc = device_get_softc(dev);
 230         struct ieee80211com *ic = &sc->sc_ic;
 231         uint16_t val;
 232         int error, i;
 233
 234         sc->sc_dev = dev;
 235
 236         mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
 237             MTX_DEF | MTX_RECURSE);
 238         mbufq_init(&sc->sc_snd, ifqmaxlen);
 239         TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc);
 240         callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
 241
 242         pci_write_config(dev, 0x41, 0, 1);
 243
 244         /* enable bus-mastering */
 245         pci_enable_busmaster(dev);
 246
 247         i = PCIR_BAR(0);
 248         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
 249         if (sc->mem == NULL) {
 250                 device_printf(dev, "could not allocate memory resource\n");
 251                 goto fail;
 252         }
 253
 254         sc->sc_st = rman_get_bustag(sc->mem);
 255         sc->sc_sh = rman_get_bushandle(sc->mem);
 256
 257         i = 0;
 258         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
 259             RF_ACTIVE | RF_SHAREABLE);
 260         if (sc->irq == NULL) {
 261                 device_printf(dev, "could not allocate interrupt resource\n");
 262                 goto fail1;
 263         }
 264
 265         if (ipw_reset(sc) != 0) {
 266                 device_printf(dev, "could not reset adapter\n");
 267                 goto fail2;
 268         }
 269
 270         if (ipw_dma_alloc(sc) != 0) {
 271                 device_printf(dev, "could not allocate DMA resources\n");
 272                 goto fail2;
 273         }
 274
 275         ic->ic_softc = sc;
 276         ic->ic_name = device_get_nameunit(dev);
 277         ic->ic_opmode = IEEE80211_M_STA;
 278         ic->ic_phytype = IEEE80211_T_DS;
 279
 280         /* set device capabilities */
 281         ic->ic_caps =
 282                   IEEE80211_C_STA               /* station mode supported */
 283                 | IEEE80211_C_IBSS              /* IBSS mode supported */
 284                 | IEEE80211_C_MONITOR           /* monitor mode supported */
 285                 | IEEE80211_C_PMGT              /* power save supported */
 286                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 287                 | IEEE80211_C_WPA               /* 802.11i supported */
 288                 ;
 289
 290         /* read MAC address from EEPROM */
 291         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0);
 292         ic->ic_macaddr[0] = val >> 8;
 293         ic->ic_macaddr[1] = val & 0xff;
 294         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1);
 295         ic->ic_macaddr[2] = val >> 8;
 296         ic->ic_macaddr[3] = val & 0xff;
 297         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2);
 298         ic->ic_macaddr[4] = val >> 8;
 299         ic->ic_macaddr[5] = val & 0xff;
 300
 301         sc->chanmask = ipw_read_chanmask(sc);
 302         ipw_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
 303             ic->ic_channels);
 304
 305         /* check support for radio transmitter switch in EEPROM */
 306         if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8))
 307                 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH;
 308
 309         ieee80211_ifattach(ic);
 310         ic->ic_scan_start = ipw_scan_start;
 311         ic->ic_scan_end = ipw_scan_end;
 312         ic->ic_getradiocaps = ipw_getradiocaps;
 313         ic->ic_set_channel = ipw_set_channel;
 314         ic->ic_scan_curchan = ipw_scan_curchan;
 315         ic->ic_scan_mindwell = ipw_scan_mindwell;
 316         ic->ic_raw_xmit = ipw_raw_xmit;
 317         ic->ic_vap_create = ipw_vap_create;
 318         ic->ic_vap_delete = ipw_vap_delete;
 319         ic->ic_transmit = ipw_transmit;
 320         ic->ic_parent = ipw_parent;
 321
 322         ieee80211_radiotap_attach(ic,
 323             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 324                 IPW_TX_RADIOTAP_PRESENT,
 325             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 326                 IPW_RX_RADIOTAP_PRESENT);
 327
 328         /*
 329          * Add a few sysctl knobs.
 330          */
 331         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 332             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio",
 333             CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT, sc, 0,
 334             ipw_sysctl_radio, "I",
 335             "radio transmitter switch state (0=off, 1=on)");
 336
 337         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 338             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
 339             CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_NEEDGIANT, sc, 0,
 340             ipw_sysctl_stats, "S", "statistics");
 341
 342         /*
 343          * Hook our interrupt after all initialization is complete.
 344          */
 345         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 346             NULL, ipw_intr, sc, &sc->sc_ih);
 347         if (error != 0) {
 348                 device_printf(dev, "could not set up interrupt\n");
 349                 goto fail3;
 350         }
 351
 352         if (bootverbose)
 353                 ieee80211_announce(ic);
 354
 355         return 0;
 356 fail3:
 357         ipw_release(sc);
 358 fail2:
 359         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 360 fail1:
 361         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
 362             sc->mem);
 363 fail:
 364         mtx_destroy(&sc->sc_mtx);
 365         return ENXIO;
 366 }
 367
 368 static int
 369 ipw_detach(device_t dev)
 370 {
 371         struct ipw_softc *sc = device_get_softc(dev);
 372         struct ieee80211com *ic = &sc->sc_ic;
 373
 374         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 375
 376         ieee80211_draintask(ic, &sc->sc_init_task);
 377         ipw_stop(sc);
 378
 379         ieee80211_ifdetach(ic);
 380
 381         callout_drain(&sc->sc_wdtimer);
 382         mbufq_drain(&sc->sc_snd);
 383
 384         ipw_release(sc);
 385
 386         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 387
 388         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
 389             sc->mem);
 390
 391         if (sc->sc_firmware != NULL) {
 392                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 393                 sc->sc_firmware = NULL;
 394         }
 395
 396         mtx_destroy(&sc->sc_mtx);
 397
 398         return 0;
 399 }
 400
 401 static struct ieee80211vap *
 402 ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
 403     enum ieee80211_opmode opmode, int flags,
 404     const uint8_t bssid[IEEE80211_ADDR_LEN],
 405     const uint8_t mac[IEEE80211_ADDR_LEN])
 406 {
 407         struct ipw_softc *sc = ic->ic_softc;
 408         struct ipw_vap *ivp;
 409         struct ieee80211vap *vap;
 410         const struct firmware *fp;
 411         const struct ipw_firmware_hdr *hdr;
 412         const char *imagename;
 413
 414         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 415                 return NULL;
 416
 417         switch (opmode) {
 418         case IEEE80211_M_STA:
 419                 imagename = "ipw_bss";
 420                 break;
 421         case IEEE80211_M_IBSS:
 422                 imagename = "ipw_ibss";
 423                 break;
 424         case IEEE80211_M_MONITOR:
 425                 imagename = "ipw_monitor";
 426                 break;
 427         default:
 428                 return NULL;
 429         }
 430
 431         /*
 432          * Load firmware image using the firmware(9) subsystem.  Doing
 433          * this unlocked is ok since we're single-threaded by the
 434          * 802.11 layer.
 435          */
 436         if (sc->sc_firmware == NULL ||
 437             strcmp(sc->sc_firmware->name, imagename) != 0) {
 438                 if (sc->sc_firmware != NULL)
 439                         firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 440                 sc->sc_firmware = firmware_get(imagename);
 441         }
 442         if (sc->sc_firmware == NULL) {
 443                 device_printf(sc->sc_dev,
 444                     "could not load firmware image '%s'\n", imagename);
 445                 return NULL;
 446         }
 447         fp = sc->sc_firmware;
 448         if (fp->datasize < sizeof *hdr) {
 449                 device_printf(sc->sc_dev,
 450                     "firmware image too short %zu\n", fp->datasize);
 451                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 452                 sc->sc_firmware = NULL;
 453                 return NULL;
 454         }
 455         hdr = (const struct ipw_firmware_hdr *)fp->data;
 456         if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) +
 457             le32toh(hdr->ucodesz)) {
 458                 device_printf(sc->sc_dev,
 459                     "firmware image too short %zu\n", fp->datasize);
 460                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 461                 sc->sc_firmware = NULL;
 462                 return NULL;
 463         }
 464
 465         ivp = malloc(sizeof(struct ipw_vap), M_80211_VAP, M_WAITOK | M_ZERO);
 466         vap = &ivp->vap;
 467
 468         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
 469         /* override with driver methods */
 470         ivp->newstate = vap->iv_newstate;
 471         vap->iv_newstate = ipw_newstate;
 472
 473         /* complete setup */
 474         ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status,
 475             mac);
 476         ic->ic_opmode = opmode;
 477         return vap;
 478 }
 479
 480 static void
 481 ipw_vap_delete(struct ieee80211vap *vap)
 482 {
 483         struct ipw_vap *ivp = IPW_VAP(vap);
 484
 485         ieee80211_vap_detach(vap);
 486         free(ivp, M_80211_VAP);
 487 }
 488
 489 static int
 490 ipw_dma_alloc(struct ipw_softc *sc)
 491 {
 492         struct ipw_soft_bd *sbd;
 493         struct ipw_soft_hdr *shdr;
 494         struct ipw_soft_buf *sbuf;
 495         bus_addr_t physaddr;
 496         int error, i;
 497
 498         /*
 499          * Allocate parent DMA tag for subsequent allocations.
 500          */
 501         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
 502             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 503             BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED,
 504             BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat);
 505         if (error != 0) {
 506                 device_printf(sc->sc_dev, "could not create parent DMA tag\n");
 507                 goto fail;
 508         }
 509
 510         /*
 511          * Allocate and map tx ring.
 512          */
 513         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 514             BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL,
 515             NULL, &sc->tbd_dmat);
 516         if (error != 0) {
 517                 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
 518                 goto fail;
 519         }
 520
 521         error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list,
 522             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map);
 523         if (error != 0) {
 524                 device_printf(sc->sc_dev,
 525                     "could not allocate tx ring DMA memory\n");
 526                 goto fail;
 527         }
 528
 529         error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list,
 530             IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0);
 531         if (error != 0) {
 532                 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n");
 533                 goto fail;
 534         }
 535
 536         /*
 537          * Allocate and map rx ring.
 538          */
 539         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 540             BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL,
 541             NULL, &sc->rbd_dmat);
 542         if (error != 0) {
 543                 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n");
 544                 goto fail;
 545         }
 546
 547         error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list,
 548             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map);
 549         if (error != 0) {
 550                 device_printf(sc->sc_dev,
 551                     "could not allocate rx ring DMA memory\n");
 552                 goto fail;
 553         }
 554
 555         error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list,
 556             IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0);
 557         if (error != 0) {
 558                 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n");
 559                 goto fail;
 560         }
 561
 562         /*
 563          * Allocate and map status ring.
 564          */
 565         error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 566             BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0,
 567             NULL, NULL, &sc->status_dmat);
 568         if (error != 0) {
 569                 device_printf(sc->sc_dev,
 570                     "could not create status ring DMA tag\n");
 571                 goto fail;
 572         }
 573
 574         error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list,
 575             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map);
 576         if (error != 0) {
 577                 device_printf(sc->sc_dev,
 578                     "could not allocate status ring DMA memory\n");
 579                 goto fail;
 580         }
 581
 582         error = bus_dmamap_load(sc->status_dmat, sc->status_map,
 583             sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys,
 584             0);
 585         if (error != 0) {
 586                 device_printf(sc->sc_dev,
 587                     "could not map status ring DMA memory\n");
 588                 goto fail;
 589         }
 590
 591         /*
 592          * Allocate command DMA map.
 593          */
 594         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 595             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1,
 596             sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat);
 597         if (error != 0) {
 598                 device_printf(sc->sc_dev, "could not create command DMA tag\n");
 599                 goto fail;
 600         }
 601
 602         error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map);
 603         if (error != 0) {
 604                 device_printf(sc->sc_dev,
 605                     "could not create command DMA map\n");
 606                 goto fail;
 607         }
 608
 609         /*
 610          * Allocate headers DMA maps.
 611          */
 612         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 613             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1,
 614             sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat);
 615         if (error != 0) {
 616                 device_printf(sc->sc_dev, "could not create header DMA tag\n");
 617                 goto fail;
 618         }
 619
 620         SLIST_INIT(&sc->free_shdr);
 621         for (i = 0; i < IPW_NDATA; i++) {
 622                 shdr = &sc->shdr_list[i];
 623                 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map);
 624                 if (error != 0) {
 625                         device_printf(sc->sc_dev,
 626                             "could not create header DMA map\n");
 627                         goto fail;
 628                 }
 629                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
 630         }
 631
 632         /*
 633          * Allocate tx buffers DMA maps.
 634          */
 635         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 636             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0,
 637             NULL, NULL, &sc->txbuf_dmat);
 638         if (error != 0) {
 639                 device_printf(sc->sc_dev, "could not create tx DMA tag\n");
 640                 goto fail;
 641         }
 642
 643         SLIST_INIT(&sc->free_sbuf);
 644         for (i = 0; i < IPW_NDATA; i++) {
 645                 sbuf = &sc->tx_sbuf_list[i];
 646                 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map);
 647                 if (error != 0) {
 648                         device_printf(sc->sc_dev,
 649                             "could not create tx DMA map\n");
 650                         goto fail;
 651                 }
 652                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
 653         }
 654
 655         /*
 656          * Initialize tx ring.
 657          */
 658         for (i = 0; i < IPW_NTBD; i++) {
 659                 sbd = &sc->stbd_list[i];
 660                 sbd->bd = &sc->tbd_list[i];
 661                 sbd->type = IPW_SBD_TYPE_NOASSOC;
 662         }
 663
 664         /*
 665          * Pre-allocate rx buffers and DMA maps.
 666          */
 667         error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 668             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
 669             NULL, &sc->rxbuf_dmat);
 670         if (error != 0) {
 671                 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
 672                 goto fail;
 673         }
 674
 675         for (i = 0; i < IPW_NRBD; i++) {
 676                 sbd = &sc->srbd_list[i];
 677                 sbuf = &sc->rx_sbuf_list[i];
 678                 sbd->bd = &sc->rbd_list[i];
 679
 680                 sbuf->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
 681                 if (sbuf->m == NULL) {
 682                         device_printf(sc->sc_dev,
 683                             "could not allocate rx mbuf\n");
 684                         error = ENOMEM;
 685                         goto fail;
 686                 }
 687
 688                 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map);
 689                 if (error != 0) {
 690                         device_printf(sc->sc_dev,
 691                             "could not create rx DMA map\n");
 692                         goto fail;
 693                 }
 694
 695                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
 696                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
 697                     &physaddr, 0);
 698                 if (error != 0) {
 699                         device_printf(sc->sc_dev,
 700                             "could not map rx DMA memory\n");
 701                         goto fail;
 702                 }
 703
 704                 sbd->type = IPW_SBD_TYPE_DATA;
 705                 sbd->priv = sbuf;
 706                 sbd->bd->physaddr = htole32(physaddr);
 707                 sbd->bd->len = htole32(MCLBYTES);
 708         }
 709
 710         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
 711
 712         return 0;
 713
 714 fail:   ipw_release(sc);
 715         return error;
 716 }
 717
 718 static void
 719 ipw_release(struct ipw_softc *sc)
 720 {
 721         struct ipw_soft_buf *sbuf;
 722         int i;
 723
 724         if (sc->parent_dmat != NULL) {
 725                 bus_dma_tag_destroy(sc->parent_dmat);
 726         }
 727
 728         if (sc->tbd_dmat != NULL) {
 729                 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map);
 730                 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, sc->tbd_map);
 731                 bus_dma_tag_destroy(sc->tbd_dmat);
 732         }
 733
 734         if (sc->rbd_dmat != NULL) {
 735                 if (sc->rbd_list != NULL) {
 736                         bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map);
 737                         bus_dmamem_free(sc->rbd_dmat, sc->rbd_list,
 738                             sc->rbd_map);
 739                 }
 740                 bus_dma_tag_destroy(sc->rbd_dmat);
 741         }
 742
 743         if (sc->status_dmat != NULL) {
 744                 if (sc->status_list != NULL) {
 745                         bus_dmamap_unload(sc->status_dmat, sc->status_map);
 746                         bus_dmamem_free(sc->status_dmat, sc->status_list,
 747                             sc->status_map);
 748                 }
 749                 bus_dma_tag_destroy(sc->status_dmat);
 750         }
 751
 752         for (i = 0; i < IPW_NTBD; i++)
 753                 ipw_release_sbd(sc, &sc->stbd_list[i]);
 754
 755         if (sc->cmd_dmat != NULL) {
 756                 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map);
 757                 bus_dma_tag_destroy(sc->cmd_dmat);
 758         }
 759
 760         if (sc->hdr_dmat != NULL) {
 761                 for (i = 0; i < IPW_NDATA; i++)
 762                         bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map);
 763                 bus_dma_tag_destroy(sc->hdr_dmat);
 764         }
 765
 766         if (sc->txbuf_dmat != NULL) {
 767                 for (i = 0; i < IPW_NDATA; i++) {
 768                         bus_dmamap_destroy(sc->txbuf_dmat,
 769                             sc->tx_sbuf_list[i].map);
 770                 }
 771                 bus_dma_tag_destroy(sc->txbuf_dmat);
 772         }
 773
 774         if (sc->rxbuf_dmat != NULL) {
 775                 for (i = 0; i < IPW_NRBD; i++) {
 776                         sbuf = &sc->rx_sbuf_list[i];
 777                         if (sbuf->m != NULL) {
 778                                 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map,
 779                                     BUS_DMASYNC_POSTREAD);
 780                                 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
 781                                 m_freem(sbuf->m);
 782                         }
 783                         bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map);
 784                 }
 785                 bus_dma_tag_destroy(sc->rxbuf_dmat);
 786         }
 787 }
 788
 789 static int
 790 ipw_shutdown(device_t dev)
 791 {
 792         struct ipw_softc *sc = device_get_softc(dev);
 793
 794         ipw_stop(sc);
 795
 796         return 0;
 797 }
 798
 799 static int
 800 ipw_suspend(device_t dev)
 801 {
 802         struct ipw_softc *sc = device_get_softc(dev);
 803         struct ieee80211com *ic = &sc->sc_ic;
 804
 805         ieee80211_suspend_all(ic);
 806         return 0;
 807 }
 808
 809 static int
 810 ipw_resume(device_t dev)
 811 {
 812         struct ipw_softc *sc = device_get_softc(dev);
 813         struct ieee80211com *ic = &sc->sc_ic;
 814
 815         pci_write_config(dev, 0x41, 0, 1);
 816
 817         ieee80211_resume_all(ic);
 818         return 0;
 819 }
 820
 821 static int
 822 ipw_cvtrate(int ipwrate)
 823 {
 824         switch (ipwrate) {
 825         case IPW_RATE_DS1:      return 2;
 826         case IPW_RATE_DS2:      return 4;
 827         case IPW_RATE_DS5:      return 11;
 828         case IPW_RATE_DS11:     return 22;
 829         }
 830         return 0;
 831 }
 832
 833 /*
 834  * The firmware automatically adapts the transmit speed. We report its current
 835  * value here.
 836  */
 837 static void
 838 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 839 {
 840         struct ieee80211vap *vap = ifp->if_softc;
 841         struct ieee80211com *ic = vap->iv_ic;
 842         struct ipw_softc *sc = ic->ic_softc;
 843
 844         /* read current transmission rate from adapter */
 845         vap->iv_bss->ni_txrate = ipw_cvtrate(
 846             ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf);
 847         ieee80211_media_status(ifp, imr);
 848 }
 849
 850 static int
 851 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 852 {
 853         struct ipw_vap *ivp = IPW_VAP(vap);
 854         struct ieee80211com *ic = vap->iv_ic;
 855         struct ipw_softc *sc = ic->ic_softc;
 856         enum ieee80211_state ostate;
 857
 858         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
 859                 ieee80211_state_name[vap->iv_state],
 860                 ieee80211_state_name[nstate], sc->flags));
 861
 862         ostate = vap->iv_state;
 863         IEEE80211_UNLOCK(ic);
 864
 865         switch (nstate) {
 866         case IEEE80211_S_RUN:
 867                 if (ic->ic_opmode == IEEE80211_M_IBSS) {
 868                         /*
 869                          * XXX when joining an ibss network we are called
 870                          * with a SCAN -> RUN transition on scan complete.
 871                          * Use that to call ipw_assoc.  On completing the
 872                          * join we are then called again with an AUTH -> RUN
 873                          * transition and we want to do nothing.  This is
 874                          * all totally bogus and needs to be redone.
 875                          */
 876                         if (ostate == IEEE80211_S_SCAN)
 877                                 ipw_assoc(ic, vap);
 878                 }
 879                 break;
 880
 881         case IEEE80211_S_INIT:
 882                 if (sc->flags & IPW_FLAG_ASSOCIATED)
 883                         ipw_disassoc(ic, vap);
 884                 break;
 885
 886         case IEEE80211_S_AUTH:
 887                 /*
 888                  * Move to ASSOC state after the ipw_assoc() call.  Firmware
 889                  * takes care of authentication, after the call we'll receive
 890                  * only an assoc response which would otherwise be discared
 891                  * if we are still in AUTH state.
 892                  */
 893                 nstate = IEEE80211_S_ASSOC;
 894                 ipw_assoc(ic, vap);
 895                 break;
 896
 897         case IEEE80211_S_ASSOC:
 898                 /*
 899                  * If we are not transitioning from AUTH then resend the
 900                  * association request.
 901                  */
 902                 if (ostate != IEEE80211_S_AUTH)
 903                         ipw_assoc(ic, vap);
 904                 break;
 905
 906         default:
 907                 break;
 908         }
 909         IEEE80211_LOCK(ic);
 910         return ivp->newstate(vap, nstate, arg);
 911 }
 912
 913 /*
 914  * Read 16 bits at address 'addr' from the serial EEPROM.
 915  */
 916 static uint16_t
 917 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr)
 918 {
 919         uint32_t tmp;
 920         uint16_t val;
 921         int n;
 922
 923         /* clock C once before the first command */
 924         IPW_EEPROM_CTL(sc, 0);
 925         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 926         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 927         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 928
 929         /* write start bit (1) */
 930         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 931         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 932
 933         /* write READ opcode (10) */
 934         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 935         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 936         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 937         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 938
 939         /* write address A7-A0 */
 940         for (n = 7; n >= 0; n--) {
 941                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 942                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D));
 943                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 944                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C);
 945         }
 946
 947         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 948
 949         /* read data Q15-Q0 */
 950         val = 0;
 951         for (n = 15; n >= 0; n--) {
 952                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 953                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 954                 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL);
 955                 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n;
 956         }
 957
 958         IPW_EEPROM_CTL(sc, 0);
 959
 960         /* clear Chip Select and clock C */
 961         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 962         IPW_EEPROM_CTL(sc, 0);
 963         IPW_EEPROM_CTL(sc, IPW_EEPROM_C);
 964
 965         return le16toh(val);
 966 }
 967
 968 static uint16_t
 969 ipw_read_chanmask(struct ipw_softc *sc)
 970 {
 971         uint16_t val;
 972
 973         /* set supported .11b channels (read from EEPROM) */
 974         if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0)
 975                 val = 0x7ff;    /* default to channels 1-11 */
 976         val <<= 1;
 977
 978         return (val);
 979 }
 980
 981 static void
 982 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
 983 {
 984         struct ipw_cmd *cmd;
 985
 986         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
 987
 988         cmd = mtod(sbuf->m, struct ipw_cmd *);
 989
 990         DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n",
 991             ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type),
 992             le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len),
 993             le32toh(cmd->status)));
 994
 995         sc->flags &= ~IPW_FLAG_BUSY;
 996         wakeup(sc);
 997 }
 998
 999 static void
1000 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
1001 {
1002 #define IEEESTATE(vap)  ieee80211_state_name[vap->iv_state]
1003         struct ieee80211com *ic = &sc->sc_ic;
1004         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1005         uint32_t state;
1006
1007         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1008
1009         state = le32toh(*mtod(sbuf->m, uint32_t *));
1010
1011         switch (state) {
1012         case IPW_STATE_ASSOCIATED:
1013                 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n",
1014                         IEEESTATE(vap), sc->flags));
1015                 /* XXX suppress state change in case the fw auto-associates */
1016                 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) {
1017                         DPRINTF(("Unexpected association (%s, flags 0x%x)\n",
1018                                 IEEESTATE(vap), sc->flags));
1019                         break;
1020                 }
1021                 sc->flags &= ~IPW_FLAG_ASSOCIATING;
1022                 sc->flags |= IPW_FLAG_ASSOCIATED;
1023                 break;
1024
1025         case IPW_STATE_SCANNING:
1026                 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n",
1027                         IEEESTATE(vap), sc->flags));
1028                 /*
1029                  * NB: Check driver state for association on assoc
1030                  * loss as the firmware will immediately start to
1031                  * scan and we would treat it as a beacon miss if
1032                  * we checked the 802.11 layer state.
1033                  */
1034                 if (sc->flags & IPW_FLAG_ASSOCIATED) {
1035                         IPW_UNLOCK(sc);
1036                         /* XXX probably need to issue disassoc to fw */
1037                         ieee80211_beacon_miss(ic);
1038                         IPW_LOCK(sc);
1039                 }
1040                 break;
1041
1042         case IPW_STATE_SCAN_COMPLETE:
1043                 /*
1044                  * XXX For some reason scan requests generate scan
1045                  * started + scan done events before any traffic is
1046                  * received (e.g. probe response frames).  We work
1047                  * around this by marking the HACK flag and skipping
1048                  * the first scan complete event.
1049                 */
1050                 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n",
1051                             IEEESTATE(vap), sc->flags));
1052                 if (sc->flags & IPW_FLAG_HACK) {
1053                         sc->flags &= ~IPW_FLAG_HACK;
1054                         break;
1055                 }
1056                 if (sc->flags & IPW_FLAG_SCANNING) {
1057                         IPW_UNLOCK(sc);
1058                         ieee80211_scan_done(vap);
1059                         IPW_LOCK(sc);
1060                         sc->flags &= ~IPW_FLAG_SCANNING;
1061                         sc->sc_scan_timer = 0;
1062                 }
1063                 break;
1064
1065         case IPW_STATE_ASSOCIATION_LOST:
1066                 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n",
1067                         IEEESTATE(vap), sc->flags));
1068                 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1069                 if (vap->iv_state == IEEE80211_S_RUN) {
1070                         IPW_UNLOCK(sc);
1071                         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1072                         IPW_LOCK(sc);
1073                 }
1074                 break;
1075
1076         case IPW_STATE_DISABLED:
1077                 /* XXX? is this right? */
1078                 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING |
1079                     IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1080                 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n",
1081                         IEEESTATE(vap), sc->flags));
1082                 break;
1083
1084         case IPW_STATE_RADIO_DISABLED:
1085                 device_printf(sc->sc_dev, "radio turned off\n");
1086                 ieee80211_notify_radio(ic, 0);
1087                 ipw_stop_locked(sc);
1088                 /* XXX start polling thread to detect radio on */
1089                 break;
1090
1091         default:
1092                 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n",
1093                         __func__, state, IEEESTATE(vap), sc->flags));
1094                 break;
1095         }
1096 #undef IEEESTATE
1097 }
1098
1099 /*
1100  * Set driver state for current channel.
1101  */
1102 static void
1103 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan)
1104 {
1105         struct ieee80211com *ic = &sc->sc_ic;
1106
1107         ic->ic_curchan = chan;
1108         ieee80211_radiotap_chan_change(ic);
1109 }
1110
1111 /*
1112  * XXX: Hack to set the current channel to the value advertised in beacons or
1113  * probe responses. Only used during AP detection.
1114  */
1115 static void
1116 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m)
1117 {
1118         struct ieee80211com *ic = &sc->sc_ic;
1119         struct ieee80211_channel *c;
1120         struct ieee80211_frame *wh;
1121         uint8_t subtype;
1122         uint8_t *frm, *efrm;
1123
1124         wh = mtod(m, struct ieee80211_frame *);
1125
1126         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
1127                 return;
1128
1129         subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1130
1131         if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1132             subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1133                 return;
1134
1135         /* XXX use ieee80211_parse_beacon */
1136         frm = (uint8_t *)(wh + 1);
1137         efrm = mtod(m, uint8_t *) + m->m_len;
1138
1139         frm += 12;      /* skip tstamp, bintval and capinfo fields */
1140         while (frm < efrm) {
1141                 if (*frm == IEEE80211_ELEMID_DSPARMS)
1142 #if IEEE80211_CHAN_MAX < 255
1143                 if (frm[2] <= IEEE80211_CHAN_MAX)
1144 #endif
1145                 {
1146                         DPRINTF(("Fixing channel to %d\n", frm[2]));
1147                         c = ieee80211_find_channel(ic,
1148                                 ieee80211_ieee2mhz(frm[2], 0),
1149                                 IEEE80211_CHAN_B);
1150                         if (c == NULL)
1151                                 c = &ic->ic_channels[0];
1152                         ipw_setcurchan(sc, c);
1153                 }
1154
1155                 frm += frm[1] + 2;
1156         }
1157 }
1158
1159 static void
1160 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status,
1161     struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf)
1162 {
1163         struct epoch_tracker et;
1164         struct ieee80211com *ic = &sc->sc_ic;
1165         struct mbuf *mnew, *m;
1166         struct ieee80211_node *ni;
1167         bus_addr_t physaddr;
1168         int error;
1169         int8_t rssi, nf;
1170
1171         DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len),
1172             status->rssi));
1173
1174         if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) ||
1175             le32toh(status->len) > MCLBYTES)
1176                 return;
1177
1178         /*
1179          * Try to allocate a new mbuf for this ring element and load it before
1180          * processing the current mbuf. If the ring element cannot be loaded,
1181          * drop the received packet and reuse the old mbuf. In the unlikely
1182          * case that the old mbuf can't be reloaded either, explicitly panic.
1183          */
1184         mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1185         if (mnew == NULL) {
1186                 counter_u64_add(ic->ic_ierrors, 1);
1187                 return;
1188         }
1189
1190         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1191         bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
1192
1193         error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *),
1194             MCLBYTES, ipw_dma_map_addr, &physaddr, 0);
1195         if (error != 0) {
1196                 m_freem(mnew);
1197
1198                 /* try to reload the old mbuf */
1199                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
1200                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
1201                     &physaddr, 0);
1202                 if (error != 0) {
1203                         /* very unlikely that it will fail... */
1204                         panic("%s: could not load old rx mbuf",
1205                             device_get_name(sc->sc_dev));
1206                 }
1207                 counter_u64_add(ic->ic_ierrors, 1);
1208                 return;
1209         }
1210
1211         /*
1212          * New mbuf successfully loaded, update Rx ring and continue
1213          * processing.
1214          */
1215         m = sbuf->m;
1216         sbuf->m = mnew;
1217         sbd->bd->physaddr = htole32(physaddr);
1218         m->m_pkthdr.len = m->m_len = le32toh(status->len);
1219
1220         rssi = status->rssi + IPW_RSSI_TO_DBM;
1221         nf = -95;
1222         if (ieee80211_radiotap_active(ic)) {
1223                 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap;
1224
1225                 tap->wr_flags = 0;
1226                 tap->wr_antsignal = rssi;
1227                 tap->wr_antnoise = nf;
1228         }
1229
1230         if (sc->flags & IPW_FLAG_SCANNING)
1231                 ipw_fix_channel(sc, m);
1232
1233         IPW_UNLOCK(sc);
1234         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1235         NET_EPOCH_ENTER(et);
1236         if (ni != NULL) {
1237                 (void) ieee80211_input(ni, m, rssi - nf, nf);
1238                 ieee80211_free_node(ni);
1239         } else
1240                 (void) ieee80211_input_all(ic, m, rssi - nf, nf);
1241         NET_EPOCH_EXIT(et);
1242         IPW_LOCK(sc);
1243
1244         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1245 }
1246
1247 static void
1248 ipw_rx_intr(struct ipw_softc *sc)
1249 {
1250         struct ipw_status *status;
1251         struct ipw_soft_bd *sbd;
1252         struct ipw_soft_buf *sbuf;
1253         uint32_t r, i;
1254
1255         if (!(sc->flags & IPW_FLAG_FW_INITED))
1256                 return;
1257
1258         r = CSR_READ_4(sc, IPW_CSR_RX_READ);
1259
1260         bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD);
1261
1262         for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) {
1263                 status = &sc->status_list[i];
1264                 sbd = &sc->srbd_list[i];
1265                 sbuf = sbd->priv;
1266
1267                 switch (le16toh(status->code) & 0xf) {
1268                 case IPW_STATUS_CODE_COMMAND:
1269                         ipw_rx_cmd_intr(sc, sbuf);
1270                         break;
1271
1272                 case IPW_STATUS_CODE_NEWSTATE:
1273                         ipw_rx_newstate_intr(sc, sbuf);
1274                         break;
1275
1276                 case IPW_STATUS_CODE_DATA_802_3:
1277                 case IPW_STATUS_CODE_DATA_802_11:
1278                         ipw_rx_data_intr(sc, status, sbd, sbuf);
1279                         break;
1280
1281                 case IPW_STATUS_CODE_NOTIFICATION:
1282                         DPRINTFN(2, ("notification status, len %u flags 0x%x\n",
1283                             le32toh(status->len), status->flags));
1284                         /* XXX maybe drive state machine AUTH->ASSOC? */
1285                         break;
1286
1287                 default:
1288                         device_printf(sc->sc_dev, "unexpected status code %u\n",
1289                             le16toh(status->code));
1290                 }
1291
1292                 /* firmware was killed, stop processing received frames */
1293                 if (!(sc->flags & IPW_FLAG_FW_INITED))
1294                         return;
1295
1296                 sbd->bd->flags = 0;
1297         }
1298
1299         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1300
1301         /* kick the firmware */
1302         sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1;
1303         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
1304 }
1305
1306 static void
1307 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd)
1308 {
1309         struct ipw_soft_hdr *shdr;
1310         struct ipw_soft_buf *sbuf;
1311
1312         switch (sbd->type) {
1313         case IPW_SBD_TYPE_COMMAND:
1314                 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map,
1315                     BUS_DMASYNC_POSTWRITE);
1316                 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map);
1317                 break;
1318
1319         case IPW_SBD_TYPE_HEADER:
1320                 shdr = sbd->priv;
1321                 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE);
1322                 bus_dmamap_unload(sc->hdr_dmat, shdr->map);
1323                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
1324                 break;
1325
1326         case IPW_SBD_TYPE_DATA:
1327                 sbuf = sbd->priv;
1328                 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map,
1329                     BUS_DMASYNC_POSTWRITE);
1330                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1331                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
1332
1333                 ieee80211_tx_complete(sbuf->ni, sbuf->m, 0/*XXX*/);
1334
1335                 sc->sc_tx_timer = 0;
1336                 break;
1337         }
1338
1339         sbd->type = IPW_SBD_TYPE_NOASSOC;
1340 }
1341
1342 static void
1343 ipw_tx_intr(struct ipw_softc *sc)
1344 {
1345         struct ipw_soft_bd *sbd;
1346         uint32_t r, i;
1347
1348         if (!(sc->flags & IPW_FLAG_FW_INITED))
1349                 return;
1350
1351         r = CSR_READ_4(sc, IPW_CSR_TX_READ);
1352
1353         for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) {
1354                 sbd = &sc->stbd_list[i];
1355                 ipw_release_sbd(sc, sbd);
1356                 sc->txfree++;
1357         }
1358
1359         /* remember what the firmware has processed */
1360         sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1;
1361
1362         ipw_start(sc);
1363 }
1364
1365 static void
1366 ipw_fatal_error_intr(struct ipw_softc *sc)
1367 {
1368         struct ieee80211com *ic = &sc->sc_ic;
1369         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1370
1371         device_printf(sc->sc_dev, "firmware error\n");
1372         if (vap != NULL) {
1373                 IPW_UNLOCK(sc);
1374                 ieee80211_cancel_scan(vap);
1375                 IPW_LOCK(sc);
1376         }
1377         ieee80211_runtask(ic, &sc->sc_init_task);
1378 }
1379
1380 static void
1381 ipw_intr(void *arg)
1382 {
1383         struct ipw_softc *sc = arg;
1384         uint32_t r;
1385
1386         IPW_LOCK(sc);
1387
1388         r = CSR_READ_4(sc, IPW_CSR_INTR);
1389         if (r == 0 || r == 0xffffffff)
1390                 goto done;
1391
1392         /* disable interrupts */
1393         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1394
1395         /* acknowledge all interrupts */
1396         CSR_WRITE_4(sc, IPW_CSR_INTR, r);
1397
1398         if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) {
1399                 ipw_fatal_error_intr(sc);
1400                 goto done;
1401         }
1402
1403         if (r & IPW_INTR_FW_INIT_DONE)
1404                 wakeup(sc);
1405
1406         if (r & IPW_INTR_RX_TRANSFER)
1407                 ipw_rx_intr(sc);
1408
1409         if (r & IPW_INTR_TX_TRANSFER)
1410                 ipw_tx_intr(sc);
1411
1412         /* re-enable interrupts */
1413         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1414 done:
1415         IPW_UNLOCK(sc);
1416 }
1417
1418 static void
1419 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1420 {
1421         if (error != 0)
1422                 return;
1423
1424         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1425
1426         *(bus_addr_t *)arg = segs[0].ds_addr;
1427 }
1428
1429 static const char *
1430 ipw_cmdname(int cmd)
1431 {
1432         static const struct {
1433                 int     cmd;
1434                 const char *name;
1435         } cmds[] = {
1436                 { IPW_CMD_ADD_MULTICAST,        "ADD_MULTICAST" },
1437                 { IPW_CMD_BROADCAST_SCAN,       "BROADCAST_SCAN" },
1438                 { IPW_CMD_DISABLE,              "DISABLE" },
1439                 { IPW_CMD_DISABLE_PHY,          "DISABLE_PHY" },
1440                 { IPW_CMD_ENABLE,               "ENABLE" },
1441                 { IPW_CMD_PREPARE_POWER_DOWN,   "PREPARE_POWER_DOWN" },
1442                 { IPW_CMD_SET_BASIC_TX_RATES,   "SET_BASIC_TX_RATES" },
1443                 { IPW_CMD_SET_BEACON_INTERVAL,  "SET_BEACON_INTERVAL" },
1444                 { IPW_CMD_SET_CHANNEL,          "SET_CHANNEL" },
1445                 { IPW_CMD_SET_CONFIGURATION,    "SET_CONFIGURATION" },
1446                 { IPW_CMD_SET_DESIRED_BSSID,    "SET_DESIRED_BSSID" },
1447                 { IPW_CMD_SET_ESSID,            "SET_ESSID" },
1448                 { IPW_CMD_SET_FRAG_THRESHOLD,   "SET_FRAG_THRESHOLD" },
1449                 { IPW_CMD_SET_MAC_ADDRESS,      "SET_MAC_ADDRESS" },
1450                 { IPW_CMD_SET_MANDATORY_BSSID,  "SET_MANDATORY_BSSID" },
1451                 { IPW_CMD_SET_MODE,             "SET_MODE" },
1452                 { IPW_CMD_SET_MSDU_TX_RATES,    "SET_MSDU_TX_RATES" },
1453                 { IPW_CMD_SET_POWER_MODE,       "SET_POWER_MODE" },
1454                 { IPW_CMD_SET_RTS_THRESHOLD,    "SET_RTS_THRESHOLD" },
1455                 { IPW_CMD_SET_SCAN_OPTIONS,     "SET_SCAN_OPTIONS" },
1456                 { IPW_CMD_SET_SECURITY_INFO,    "SET_SECURITY_INFO" },
1457                 { IPW_CMD_SET_TX_POWER_INDEX,   "SET_TX_POWER_INDEX" },
1458                 { IPW_CMD_SET_TX_RATES,         "SET_TX_RATES" },
1459                 { IPW_CMD_SET_WEP_FLAGS,        "SET_WEP_FLAGS" },
1460                 { IPW_CMD_SET_WEP_KEY,          "SET_WEP_KEY" },
1461                 { IPW_CMD_SET_WEP_KEY_INDEX,    "SET_WEP_KEY_INDEX" },
1462                 { IPW_CMD_SET_WPA_IE,           "SET_WPA_IE" },
1463
1464         };
1465         static char buf[12];
1466         int i;
1467
1468         for (i = 0; i < nitems(cmds); i++)
1469                 if (cmds[i].cmd == cmd)
1470                         return cmds[i].name;
1471         snprintf(buf, sizeof(buf), "%u", cmd);
1472         return buf;
1473 }
1474
1475 /*
1476  * Send a command to the firmware and wait for the acknowledgement.
1477  */
1478 static int
1479 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len)
1480 {
1481         struct ipw_soft_bd *sbd;
1482         bus_addr_t physaddr;
1483         int error;
1484
1485         IPW_LOCK_ASSERT(sc);
1486
1487         if (sc->flags & IPW_FLAG_BUSY) {
1488                 device_printf(sc->sc_dev, "%s: %s not sent, busy\n",
1489                         __func__, ipw_cmdname(type));
1490                 return EAGAIN;
1491         }
1492         sc->flags |= IPW_FLAG_BUSY;
1493
1494         sbd = &sc->stbd_list[sc->txcur];
1495
1496         error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd,
1497             sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0);
1498         if (error != 0) {
1499                 device_printf(sc->sc_dev, "could not map command DMA memory\n");
1500                 sc->flags &= ~IPW_FLAG_BUSY;
1501                 return error;
1502         }
1503
1504         sc->cmd.type = htole32(type);
1505         sc->cmd.subtype = 0;
1506         sc->cmd.len = htole32(len);
1507         sc->cmd.seq = 0;
1508         memcpy(sc->cmd.data, data, len);
1509
1510         sbd->type = IPW_SBD_TYPE_COMMAND;
1511         sbd->bd->physaddr = htole32(physaddr);
1512         sbd->bd->len = htole32(sizeof (struct ipw_cmd));
1513         sbd->bd->nfrag = 1;
1514         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND |
1515             IPW_BD_FLAG_TX_LAST_FRAGMENT;
1516
1517         bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE);
1518         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1519
1520 #ifdef IPW_DEBUG
1521         if (ipw_debug >= 4) {
1522                 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type,
1523                     0, 0, len);
1524                 /* Print the data buffer in the higher debug level */
1525                 if (ipw_debug >= 9 && len > 0) {
1526                         printf(" data: 0x");
1527                         for (int i = 1; i <= len; i++)
1528                                 printf("%1D", (u_char *)data + len - i, "");
1529                 }
1530                 printf("\n");
1531         }
1532 #endif
1533
1534         /* kick firmware */
1535         sc->txfree--;
1536         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1537         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1538
1539         /* wait at most one second for command to complete */
1540         error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz);
1541         if (error != 0) {
1542                 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n",
1543                     __func__, ipw_cmdname(type), error);
1544                 sc->flags &= ~IPW_FLAG_BUSY;
1545                 return (error);
1546         }
1547         return (0);
1548 }
1549
1550 static int
1551 ipw_tx_start(struct ipw_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1552 {
1553         struct ieee80211com *ic = &sc->sc_ic;
1554         struct ieee80211vap *vap = ni->ni_vap;
1555         struct ieee80211_frame *wh;
1556         struct ipw_soft_bd *sbd;
1557         struct ipw_soft_hdr *shdr;
1558         struct ipw_soft_buf *sbuf;
1559         struct ieee80211_key *k;
1560         struct mbuf *mnew;
1561         bus_dma_segment_t segs[IPW_MAX_NSEG];
1562         bus_addr_t physaddr;
1563         int nsegs, error, i;
1564
1565         wh = mtod(m0, struct ieee80211_frame *);
1566
1567         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1568                 k = ieee80211_crypto_encap(ni, m0);
1569                 if (k == NULL) {
1570                         m_freem(m0);
1571                         return ENOBUFS;
1572                 }
1573                 /* packet header may have moved, reset our local pointer */
1574                 wh = mtod(m0, struct ieee80211_frame *);
1575         }
1576
1577         if (ieee80211_radiotap_active_vap(vap)) {
1578                 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap;
1579
1580                 tap->wt_flags = 0;
1581
1582                 ieee80211_radiotap_tx(vap, m0);
1583         }
1584
1585         shdr = SLIST_FIRST(&sc->free_shdr);
1586         sbuf = SLIST_FIRST(&sc->free_sbuf);
1587         KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool"));
1588
1589         shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND);
1590         shdr->hdr.subtype = 0;
1591         shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) ? 1 : 0;
1592         shdr->hdr.encrypt = 0;
1593         shdr->hdr.keyidx = 0;
1594         shdr->hdr.keysz = 0;
1595         shdr->hdr.fragmentsz = 0;
1596         IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2);
1597         if (ic->ic_opmode == IEEE80211_M_STA)
1598                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3);
1599         else
1600                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1);
1601
1602         /* trim IEEE802.11 header */
1603         m_adj(m0, sizeof (struct ieee80211_frame));
1604
1605         error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs,
1606             &nsegs, 0);
1607         if (error != 0 && error != EFBIG) {
1608                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1609                     error);
1610                 m_freem(m0);
1611                 return error;
1612         }
1613         if (error != 0) {
1614                 mnew = m_defrag(m0, M_NOWAIT);
1615                 if (mnew == NULL) {
1616                         device_printf(sc->sc_dev,
1617                             "could not defragment mbuf\n");
1618                         m_freem(m0);
1619                         return ENOBUFS;
1620                 }
1621                 m0 = mnew;
1622
1623                 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0,
1624                     segs, &nsegs, 0);
1625                 if (error != 0) {
1626                         device_printf(sc->sc_dev,
1627                             "could not map mbuf (error %d)\n", error);
1628                         m_freem(m0);
1629                         return error;
1630                 }
1631         }
1632
1633         error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr,
1634             sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0);
1635         if (error != 0) {
1636                 device_printf(sc->sc_dev, "could not map header DMA memory\n");
1637                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1638                 m_freem(m0);
1639                 return error;
1640         }
1641
1642         SLIST_REMOVE_HEAD(&sc->free_sbuf, next);
1643         SLIST_REMOVE_HEAD(&sc->free_shdr, next);
1644
1645         sbd = &sc->stbd_list[sc->txcur];
1646         sbd->type = IPW_SBD_TYPE_HEADER;
1647         sbd->priv = shdr;
1648         sbd->bd->physaddr = htole32(physaddr);
1649         sbd->bd->len = htole32(sizeof (struct ipw_hdr));
1650         sbd->bd->nfrag = 1 + nsegs;
1651         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 |
1652             IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1653
1654         DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n",
1655             shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted,
1656             shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr,
1657             ":"));
1658
1659         sc->txfree--;
1660         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1661
1662         sbuf->m = m0;
1663         sbuf->ni = ni;
1664
1665         for (i = 0; i < nsegs; i++) {
1666                 sbd = &sc->stbd_list[sc->txcur];
1667
1668                 sbd->bd->physaddr = htole32(segs[i].ds_addr);
1669                 sbd->bd->len = htole32(segs[i].ds_len);
1670                 sbd->bd->nfrag = 0;
1671                 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3;
1672                 if (i == nsegs - 1) {
1673                         sbd->type = IPW_SBD_TYPE_DATA;
1674                         sbd->priv = sbuf;
1675                         sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT;
1676                 } else {
1677                         sbd->type = IPW_SBD_TYPE_NOASSOC;
1678                         sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1679                 }
1680
1681                 DPRINTFN(5, ("sending fragment (%d)\n", i));
1682
1683                 sc->txfree--;
1684                 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1685         }
1686
1687         bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE);
1688         bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE);
1689         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1690
1691         /* kick firmware */
1692         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1693
1694         return 0;
1695 }
1696
1697 static int
1698 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1699         const struct ieee80211_bpf_params *params)
1700 {
1701         /* no support; just discard */
1702         m_freem(m);
1703         ieee80211_free_node(ni);
1704         return 0;
1705 }
1706
1707 static int
1708 ipw_transmit(struct ieee80211com *ic, struct mbuf *m)
1709 {
1710         struct ipw_softc *sc = ic->ic_softc;
1711         int error;
1712
1713         IPW_LOCK(sc);
1714         if ((sc->flags & IPW_FLAG_RUNNING) == 0) {
1715                 IPW_UNLOCK(sc);
1716                 return (ENXIO);
1717         }
1718         error = mbufq_enqueue(&sc->sc_snd, m);
1719         if (error) {
1720                 IPW_UNLOCK(sc);
1721                 return (error);
1722         }
1723         ipw_start(sc);
1724         IPW_UNLOCK(sc);
1725         return (0);
1726 }
1727
1728 static void
1729 ipw_start(struct ipw_softc *sc)
1730 {
1731         struct ieee80211_node *ni;
1732         struct mbuf *m;
1733
1734         IPW_LOCK_ASSERT(sc);
1735
1736         while (sc->txfree >= 1 + IPW_MAX_NSEG &&
1737             (m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
1738                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1739                 if (ipw_tx_start(sc, m, ni) != 0) {
1740                         if_inc_counter(ni->ni_vap->iv_ifp,
1741                             IFCOUNTER_OERRORS, 1);
1742                         ieee80211_free_node(ni);
1743                         break;
1744                 }
1745                 /* start watchdog timer */
1746                 sc->sc_tx_timer = 5;
1747         }
1748 }
1749
1750 static void
1751 ipw_watchdog(void *arg)
1752 {
1753         struct ipw_softc *sc = arg;
1754         struct ieee80211com *ic = &sc->sc_ic;
1755
1756         IPW_LOCK_ASSERT(sc);
1757
1758         if (sc->sc_tx_timer > 0) {
1759                 if (--sc->sc_tx_timer == 0) {
1760                         device_printf(sc->sc_dev, "device timeout\n");
1761                         counter_u64_add(ic->ic_oerrors, 1);
1762                         taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1763                 }
1764         }
1765         if (sc->sc_scan_timer > 0) {
1766                 if (--sc->sc_scan_timer == 0) {
1767                         DPRINTFN(3, ("Scan timeout\n"));
1768                         /* End the scan */
1769                         if (sc->flags & IPW_FLAG_SCANNING) {
1770                                 IPW_UNLOCK(sc);
1771                                 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps));
1772                                 IPW_LOCK(sc);
1773                                 sc->flags &= ~IPW_FLAG_SCANNING;
1774                         }
1775                 }
1776         }
1777         if (sc->flags & IPW_FLAG_RUNNING)
1778                 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
1779 }
1780
1781 static void
1782 ipw_parent(struct ieee80211com *ic)
1783 {
1784         struct ipw_softc *sc = ic->ic_softc;
1785         int startall = 0;
1786
1787         IPW_LOCK(sc);
1788         if (ic->ic_nrunning > 0) {
1789                 if (!(sc->flags & IPW_FLAG_RUNNING)) {
1790                         ipw_init_locked(sc);
1791                         startall = 1;
1792                 }
1793         } else if (sc->flags & IPW_FLAG_RUNNING)
1794                 ipw_stop_locked(sc);
1795         IPW_UNLOCK(sc);
1796         if (startall)
1797                 ieee80211_start_all(ic);
1798 }
1799
1800 static void
1801 ipw_stop_master(struct ipw_softc *sc)
1802 {
1803         uint32_t tmp;
1804         int ntries;
1805
1806         /* disable interrupts */
1807         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1808
1809         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER);
1810         for (ntries = 0; ntries < 50; ntries++) {
1811                 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED)
1812                         break;
1813                 DELAY(10);
1814         }
1815         if (ntries == 50)
1816                 device_printf(sc->sc_dev, "timeout waiting for master\n");
1817
1818         tmp = CSR_READ_4(sc, IPW_CSR_RST);
1819         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET);
1820
1821         /* Clear all flags except the following */
1822         sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH;
1823 }
1824
1825 static int
1826 ipw_reset(struct ipw_softc *sc)
1827 {
1828         uint32_t tmp;
1829         int ntries;
1830
1831         ipw_stop_master(sc);
1832
1833         /* move adapter to D0 state */
1834         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1835         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1836
1837         /* wait for clock stabilization */
1838         for (ntries = 0; ntries < 1000; ntries++) {
1839                 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY)
1840                         break;
1841                 DELAY(200);
1842         }
1843         if (ntries == 1000)
1844                 return EIO;
1845
1846         tmp =  CSR_READ_4(sc, IPW_CSR_RST);
1847         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET);
1848
1849         DELAY(10);
1850
1851         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1852         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1853
1854         return 0;
1855 }
1856
1857 static int
1858 ipw_waitfordisable(struct ipw_softc *sc, int waitfor)
1859 {
1860         int ms = hz < 1000 ? 1 : hz/10;
1861         int i, error;
1862
1863         for (i = 0; i < 100; i++) {
1864                 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor)
1865                         return 0;
1866                 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms);
1867                 if (error == 0 || error != EWOULDBLOCK)
1868                         return 0;
1869         }
1870         DPRINTF(("%s: timeout waiting for %s\n",
1871                 __func__, waitfor ? "disable" : "enable"));
1872         return ETIMEDOUT;
1873 }
1874
1875 static int
1876 ipw_enable(struct ipw_softc *sc)
1877 {
1878         int error;
1879
1880         if ((sc->flags & IPW_FLAG_ENABLED) == 0) {
1881                 DPRINTF(("Enable adapter\n"));
1882                 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
1883                 if (error != 0)
1884                         return error;
1885                 error = ipw_waitfordisable(sc, 0);
1886                 if (error != 0)
1887                         return error;
1888                 sc->flags |= IPW_FLAG_ENABLED;
1889         }
1890         return 0;
1891 }
1892
1893 static int
1894 ipw_disable(struct ipw_softc *sc)
1895 {
1896         int error;
1897
1898         if (sc->flags & IPW_FLAG_ENABLED) {
1899                 DPRINTF(("Disable adapter\n"));
1900                 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0);
1901                 if (error != 0)
1902                         return error;
1903                 error = ipw_waitfordisable(sc, 1);
1904                 if (error != 0)
1905                         return error;
1906                 sc->flags &= ~IPW_FLAG_ENABLED;
1907         }
1908         return 0;
1909 }
1910
1911 /*
1912  * Upload the microcode to the device.
1913  */
1914 static int
1915 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size)
1916 {
1917         int ntries;
1918
1919         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
1920         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1921
1922         MEM_WRITE_2(sc, 0x220000, 0x0703);
1923         MEM_WRITE_2(sc, 0x220000, 0x0707);
1924
1925         MEM_WRITE_1(sc, 0x210014, 0x72);
1926         MEM_WRITE_1(sc, 0x210014, 0x72);
1927
1928         MEM_WRITE_1(sc, 0x210000, 0x40);
1929         MEM_WRITE_1(sc, 0x210000, 0x00);
1930         MEM_WRITE_1(sc, 0x210000, 0x40);
1931
1932         MEM_WRITE_MULTI_1(sc, 0x210010, uc, size);
1933
1934         MEM_WRITE_1(sc, 0x210000, 0x00);
1935         MEM_WRITE_1(sc, 0x210000, 0x00);
1936         MEM_WRITE_1(sc, 0x210000, 0x80);
1937
1938         MEM_WRITE_2(sc, 0x220000, 0x0703);
1939         MEM_WRITE_2(sc, 0x220000, 0x0707);
1940
1941         MEM_WRITE_1(sc, 0x210014, 0x72);
1942         MEM_WRITE_1(sc, 0x210014, 0x72);
1943
1944         MEM_WRITE_1(sc, 0x210000, 0x00);
1945         MEM_WRITE_1(sc, 0x210000, 0x80);
1946
1947         for (ntries = 0; ntries < 10; ntries++) {
1948                 if (MEM_READ_1(sc, 0x210000) & 1)
1949                         break;
1950                 DELAY(10);
1951         }
1952         if (ntries == 10) {
1953                 device_printf(sc->sc_dev,
1954                     "timeout waiting for ucode to initialize\n");
1955                 return EIO;
1956         }
1957
1958         MEM_WRITE_4(sc, 0x3000e0, 0);
1959
1960         return 0;
1961 }
1962
1963 /* set of macros to handle unaligned little endian data in firmware image */
1964 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
1965 #define GETLE16(p) ((p)[0] | (p)[1] << 8)
1966 static int
1967 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size)
1968 {
1969         const uint8_t *p, *end;
1970         uint32_t tmp, dst;
1971         uint16_t len;
1972         int error;
1973
1974         p = fw;
1975         end = fw + size;
1976         while (p < end) {
1977                 dst = GETLE32(p); p += 4;
1978                 len = GETLE16(p); p += 2;
1979
1980                 ipw_write_mem_1(sc, dst, p, len);
1981                 p += len;
1982         }
1983
1984         CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK |
1985             IPW_IO_LED_OFF);
1986
1987         /* enable interrupts */
1988         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1989
1990         /* kick the firmware */
1991         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1992
1993         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1994         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY);
1995
1996         /* wait at most one second for firmware initialization to complete */
1997         if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) {
1998                 device_printf(sc->sc_dev, "timeout waiting for firmware "
1999                     "initialization to complete\n");
2000                 return error;
2001         }
2002
2003         tmp = CSR_READ_4(sc, IPW_CSR_IO);
2004         CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK |
2005             IPW_IO_GPIO3_MASK);
2006
2007         return 0;
2008 }
2009
2010 static int
2011 ipw_setwepkeys(struct ipw_softc *sc)
2012 {
2013         struct ieee80211com *ic = &sc->sc_ic;
2014         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2015         struct ipw_wep_key wepkey;
2016         struct ieee80211_key *wk;
2017         int error, i;
2018
2019         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2020                 wk = &vap->iv_nw_keys[i];
2021
2022                 if (wk->wk_cipher == NULL ||
2023                     wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP)
2024                         continue;
2025
2026                 wepkey.idx = i;
2027                 wepkey.len = wk->wk_keylen;
2028                 memset(wepkey.key, 0, sizeof wepkey.key);
2029                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2030                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2031                     wepkey.len));
2032                 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey,
2033                     sizeof wepkey);
2034                 if (error != 0)
2035                         return error;
2036         }
2037         return 0;
2038 }
2039
2040 static int
2041 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen)
2042 {
2043         struct ipw_wpa_ie wpaie;
2044
2045         memset(&wpaie, 0, sizeof(wpaie));
2046         wpaie.len = htole32(ielen);
2047         /* XXX verify length */
2048         memcpy(&wpaie.ie, ie, ielen);
2049         DPRINTF(("Setting WPA IE\n"));
2050         return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie));
2051 }
2052
2053 static int
2054 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid)
2055 {
2056         static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
2057
2058         if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) {
2059                 DPRINTF(("Setting mandatory BSSID to null\n"));
2060                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0);
2061         } else {
2062                 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":"));
2063                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID,
2064                         bssid, IEEE80211_ADDR_LEN);
2065         }
2066 }
2067
2068 static int
2069 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen)
2070 {
2071         if (ssidlen == 0) {
2072                 /*
2073                  * A bug in the firmware breaks the ``don't associate''
2074                  * bit in the scan options command.  To compensate for
2075                  * this install a bogus ssid when no ssid is specified
2076                  * so the firmware won't try to associate.
2077                  */
2078                 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n"));
2079                 return ipw_cmd(sc, IPW_CMD_SET_ESSID,
2080                         "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27"
2081                         "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31"
2082                         "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b"
2083                         "\x3c\x3d", IEEE80211_NWID_LEN);
2084         } else {
2085 #ifdef IPW_DEBUG
2086                 if (ipw_debug > 0) {
2087                         printf("Setting ESSID to ");
2088                         ieee80211_print_essid(ssid, ssidlen);
2089                         printf("\n");
2090                 }
2091 #endif
2092                 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen);
2093         }
2094 }
2095
2096 static int
2097 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags)
2098 {
2099         struct ipw_scan_options opts;
2100
2101         DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags));
2102         opts.channels = htole32(chanmask);
2103         opts.flags = htole32(flags);
2104         return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts));
2105 }
2106
2107 static int
2108 ipw_scan(struct ipw_softc *sc)
2109 {
2110         uint32_t params;
2111         int error;
2112
2113         DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags));
2114
2115         if (sc->flags & IPW_FLAG_SCANNING)
2116                 return (EBUSY);
2117         sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK;
2118
2119         /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */
2120         error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE);
2121         if (error != 0)
2122                 goto done;
2123
2124         /*
2125          * Setup null/bogus ssid so firmware doesn't use any previous
2126          * ssid to try and associate.  This is because the ``don't
2127          * associate'' option bit is broken (sigh).
2128          */
2129         error = ipw_setssid(sc, NULL, 0);
2130         if (error != 0)
2131                 goto done;
2132
2133         /*
2134          * NB: the adapter may be disabled on association lost;
2135          *     if so just re-enable it to kick off scanning.
2136          */
2137         DPRINTF(("Starting scan\n"));
2138         sc->sc_scan_timer = 3;
2139         if (sc->flags & IPW_FLAG_ENABLED) {
2140                 params = 0;                             /* XXX? */
2141                 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN,
2142                                 &params, sizeof(params));
2143         } else
2144                 error = ipw_enable(sc);
2145 done:
2146         if (error != 0) {
2147                 DPRINTF(("Scan failed\n"));
2148                 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK);
2149         }
2150         return (error);
2151 }
2152
2153 static int
2154 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan)
2155 {
2156         struct ieee80211com *ic = &sc->sc_ic;
2157         uint32_t data;
2158         int error;
2159
2160         data = htole32(ieee80211_chan2ieee(ic, chan));
2161         DPRINTF(("Setting channel to %u\n", le32toh(data)));
2162         error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data);
2163         if (error == 0)
2164                 ipw_setcurchan(sc, chan);
2165         return error;
2166 }
2167
2168 static void
2169 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2170 {
2171         struct ipw_softc *sc = ic->ic_softc;
2172         struct ieee80211_node *ni = vap->iv_bss;
2173         struct ipw_security security;
2174         uint32_t data;
2175         int error;
2176
2177         IPW_LOCK(sc);
2178         error = ipw_disable(sc);
2179         if (error != 0)
2180                 goto done;
2181
2182         memset(&security, 0, sizeof security);
2183         security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ?
2184             IPW_AUTH_SHARED : IPW_AUTH_OPEN;
2185         security.ciphers = htole32(IPW_CIPHER_NONE);
2186         DPRINTF(("Setting authmode to %u\n", security.authmode));
2187         error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security,
2188             sizeof security);
2189         if (error != 0)
2190                 goto done;
2191
2192         data = htole32(vap->iv_rtsthreshold);
2193         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2194         error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2195         if (error != 0)
2196                 goto done;
2197
2198         data = htole32(vap->iv_fragthreshold);
2199         DPRINTF(("Setting frag threshold to %u\n", le32toh(data)));
2200         error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2201         if (error != 0)
2202                 goto done;
2203
2204         if (vap->iv_flags & IEEE80211_F_PRIVACY) {
2205                 error = ipw_setwepkeys(sc);
2206                 if (error != 0)
2207                         goto done;
2208
2209                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) {
2210                         data = htole32(vap->iv_def_txkey);
2211                         DPRINTF(("Setting wep tx key index to %u\n",
2212                                 le32toh(data)));
2213                         error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data,
2214                             sizeof data);
2215                         if (error != 0)
2216                                 goto done;
2217                 }
2218         }
2219
2220         data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0);
2221         DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data)));
2222         error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data);
2223         if (error != 0)
2224                 goto done;
2225
2226         error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen);
2227         if (error != 0)
2228                 goto done;
2229
2230         error = ipw_setbssid(sc, ni->ni_bssid);
2231         if (error != 0)
2232                 goto done;
2233
2234         if (vap->iv_appie_wpa != NULL) {
2235                 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2236                 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len);
2237                 if (error != 0)
2238                         goto done;
2239         }
2240         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2241                 error = ipw_setchannel(sc, ni->ni_chan);
2242                 if (error != 0)
2243                         goto done;
2244         }
2245
2246         /* lock scan to ap's channel and enable associate */
2247         error = ipw_setscanopts(sc,
2248             1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0);
2249         if (error != 0)
2250                 goto done;
2251
2252         error = ipw_enable(sc);         /* finally, enable adapter */
2253         if (error == 0)
2254                 sc->flags |= IPW_FLAG_ASSOCIATING;
2255 done:
2256         IPW_UNLOCK(sc);
2257 }
2258
2259 static void
2260 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2261 {
2262         struct ieee80211_node *ni = vap->iv_bss;
2263         struct ipw_softc *sc = ic->ic_softc;
2264
2265         IPW_LOCK(sc);
2266         DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":"));
2267         /*
2268          * NB: don't try to do this if ipw_stop_master has
2269          *     shutdown the firmware and disabled interrupts.
2270          */
2271         if (sc->flags & IPW_FLAG_FW_INITED) {
2272                 sc->flags &= ~IPW_FLAG_ASSOCIATED;
2273                 /*
2274                  * NB: firmware currently ignores bssid parameter, but
2275                  *     supply it in case this changes (follow linux driver).
2276                  */
2277                 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE,
2278                         ni->ni_bssid, IEEE80211_ADDR_LEN);
2279         }
2280         IPW_UNLOCK(sc);
2281 }
2282
2283 /*
2284  * Handler for sc_init_task.  This is a simple wrapper around ipw_init().
2285  * It is called on firmware panics or on watchdog timeouts.
2286  */
2287 static void
2288 ipw_init_task(void *context, int pending)
2289 {
2290         ipw_init(context);
2291 }
2292
2293 static void
2294 ipw_init(void *priv)
2295 {
2296         struct ipw_softc *sc = priv;
2297         struct ieee80211com *ic = &sc->sc_ic;
2298
2299         IPW_LOCK(sc);
2300         ipw_init_locked(sc);
2301         IPW_UNLOCK(sc);
2302
2303         if (sc->flags & IPW_FLAG_RUNNING)
2304                 ieee80211_start_all(ic);                /* start all vap's */
2305 }
2306
2307 static void
2308 ipw_init_locked(struct ipw_softc *sc)
2309 {
2310         struct ieee80211com *ic = &sc->sc_ic;
2311         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2312         const struct firmware *fp;
2313         const struct ipw_firmware_hdr *hdr;
2314         const char *fw;
2315
2316         IPW_LOCK_ASSERT(sc);
2317
2318         DPRINTF(("%s: state %s flags 0x%x\n", __func__,
2319                 ieee80211_state_name[vap->iv_state], sc->flags));
2320
2321         /*
2322          * Avoid re-entrant calls.  We need to release the mutex in ipw_init()
2323          * when loading the firmware and we don't want to be called during this
2324          * operation.
2325          */
2326         if (sc->flags & IPW_FLAG_INIT_LOCKED)
2327                 return;
2328         sc->flags |= IPW_FLAG_INIT_LOCKED;
2329
2330         ipw_stop_locked(sc);
2331
2332         if (ipw_reset(sc) != 0) {
2333                 device_printf(sc->sc_dev, "could not reset adapter\n");
2334                 goto fail;
2335         }
2336
2337         if (sc->sc_firmware == NULL) {
2338                 device_printf(sc->sc_dev, "no firmware\n");
2339                 goto fail;
2340         }
2341         /* NB: consistency already checked on load */
2342         fp = sc->sc_firmware;
2343         hdr = (const struct ipw_firmware_hdr *)fp->data;
2344
2345         DPRINTF(("Loading firmware image '%s'\n", fp->name));
2346         fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz);
2347         if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) {
2348                 device_printf(sc->sc_dev, "could not load microcode\n");
2349                 goto fail;
2350         }
2351
2352         ipw_stop_master(sc);
2353
2354         /*
2355          * Setup tx, rx and status rings.
2356          */
2357         sc->txold = IPW_NTBD - 1;
2358         sc->txcur = 0;
2359         sc->txfree = IPW_NTBD - 2;
2360         sc->rxcur = IPW_NRBD - 1;
2361
2362         CSR_WRITE_4(sc, IPW_CSR_TX_BASE,  sc->tbd_phys);
2363         CSR_WRITE_4(sc, IPW_CSR_TX_SIZE,  IPW_NTBD);
2364         CSR_WRITE_4(sc, IPW_CSR_TX_READ,  0);
2365         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
2366
2367         CSR_WRITE_4(sc, IPW_CSR_RX_BASE,  sc->rbd_phys);
2368         CSR_WRITE_4(sc, IPW_CSR_RX_SIZE,  IPW_NRBD);
2369         CSR_WRITE_4(sc, IPW_CSR_RX_READ,  0);
2370         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
2371
2372         CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys);
2373
2374         fw = (const char *)fp->data + sizeof *hdr;
2375         if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) {
2376                 device_printf(sc->sc_dev, "could not load firmware\n");
2377                 goto fail;
2378         }
2379
2380         sc->flags |= IPW_FLAG_FW_INITED;
2381
2382         /* retrieve information tables base addresses */
2383         sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE);
2384         sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE);
2385
2386         ipw_write_table1(sc, IPW_INFO_LOCK, 0);
2387
2388         if (ipw_config(sc) != 0) {
2389                 device_printf(sc->sc_dev, "device configuration failed\n");
2390                 goto fail;
2391         }
2392
2393         callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
2394         sc->flags |= IPW_FLAG_RUNNING;
2395         sc->flags &= ~IPW_FLAG_INIT_LOCKED;
2396         return;
2397
2398 fail:
2399         ipw_stop_locked(sc);
2400         sc->flags &= ~IPW_FLAG_INIT_LOCKED;
2401 }
2402
2403 static int
2404 ipw_config(struct ipw_softc *sc)
2405 {
2406         struct ieee80211com *ic = &sc->sc_ic;
2407         struct ipw_configuration config;
2408         uint32_t data;
2409         int error;
2410
2411         error = ipw_disable(sc);
2412         if (error != 0)
2413                 return error;
2414
2415         switch (ic->ic_opmode) {
2416         case IEEE80211_M_STA:
2417         case IEEE80211_M_HOSTAP:
2418         case IEEE80211_M_WDS:           /* XXX */
2419                 data = htole32(IPW_MODE_BSS);
2420                 break;
2421         case IEEE80211_M_IBSS:
2422         case IEEE80211_M_AHDEMO:
2423                 data = htole32(IPW_MODE_IBSS);
2424                 break;
2425         case IEEE80211_M_MONITOR:
2426                 data = htole32(IPW_MODE_MONITOR);
2427                 break;
2428         default:
2429                 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
2430                 return EINVAL;
2431         }
2432         DPRINTF(("Setting mode to %u\n", le32toh(data)));
2433         error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data);
2434         if (error != 0)
2435                 return error;
2436
2437         if (ic->ic_opmode == IEEE80211_M_IBSS ||
2438             ic->ic_opmode == IEEE80211_M_MONITOR) {
2439                 error = ipw_setchannel(sc, ic->ic_curchan);
2440                 if (error != 0)
2441                         return error;
2442         }
2443
2444         if (ic->ic_opmode == IEEE80211_M_MONITOR)
2445                 return ipw_enable(sc);
2446
2447         config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK |
2448             IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE);
2449         if (ic->ic_opmode == IEEE80211_M_IBSS)
2450                 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START);
2451         if (ic->ic_promisc > 0)
2452                 config.flags |= htole32(IPW_CFG_PROMISCUOUS);
2453         config.bss_chan = htole32(0x3fff); /* channels 1-14 */
2454         config.ibss_chan = htole32(0x7ff); /* channels 1-11 */
2455         DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags)));
2456         error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config);
2457         if (error != 0)
2458                 return error;
2459
2460         data = htole32(0xf); /* 1, 2, 5.5, 11 */
2461         DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data)));
2462         error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data);
2463         if (error != 0)
2464                 return error;
2465
2466         /* Use the same rate set */
2467         DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data)));
2468         error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data);
2469         if (error != 0)
2470                 return error;
2471
2472         /* Use the same rate set */
2473         DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data)));
2474         error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data);
2475         if (error != 0)
2476                 return error;
2477
2478         data = htole32(IPW_POWER_MODE_CAM);
2479         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2480         error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data);
2481         if (error != 0)
2482                 return error;
2483
2484         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2485                 data = htole32(32); /* default value */
2486                 DPRINTF(("Setting tx power index to %u\n", le32toh(data)));
2487                 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data,
2488                     sizeof data);
2489                 if (error != 0)
2490                         return error;
2491         }
2492
2493         return 0;
2494 }
2495
2496 static void
2497 ipw_stop(void *priv)
2498 {
2499         struct ipw_softc *sc = priv;
2500
2501         IPW_LOCK(sc);
2502         ipw_stop_locked(sc);
2503         IPW_UNLOCK(sc);
2504 }
2505
2506 static void
2507 ipw_stop_locked(struct ipw_softc *sc)
2508 {
2509         int i;
2510
2511         IPW_LOCK_ASSERT(sc);
2512
2513         callout_stop(&sc->sc_wdtimer);
2514         ipw_stop_master(sc);
2515
2516         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET);
2517
2518         /*
2519          * Release tx buffers.
2520          */
2521         for (i = 0; i < IPW_NTBD; i++)
2522                 ipw_release_sbd(sc, &sc->stbd_list[i]);
2523
2524         sc->sc_tx_timer = 0;
2525         sc->flags &= ~IPW_FLAG_RUNNING;
2526 }
2527
2528 static int
2529 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)
2530 {
2531         struct ipw_softc *sc = arg1;
2532         uint32_t i, size, buf[256];
2533
2534         memset(buf, 0, sizeof buf);
2535
2536         if (!(sc->flags & IPW_FLAG_FW_INITED))
2537                 return SYSCTL_OUT(req, buf, sizeof buf);
2538
2539         CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base);
2540
2541         size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256);
2542         for (i = 1; i < size; i++)
2543                 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA));
2544
2545         return SYSCTL_OUT(req, buf, size);
2546 }
2547
2548 static int
2549 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)
2550 {
2551         struct ipw_softc *sc = arg1;
2552         int val;
2553
2554         val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) &&
2555                 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED));
2556
2557         return SYSCTL_OUT(req, &val, sizeof val);
2558 }
2559
2560 static uint32_t
2561 ipw_read_table1(struct ipw_softc *sc, uint32_t off)
2562 {
2563         return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off));
2564 }
2565
2566 static void
2567 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info)
2568 {
2569         MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info);
2570 }
2571
2572 #if 0
2573 static int
2574 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len)
2575 {
2576         uint32_t addr, info;
2577         uint16_t count, size;
2578         uint32_t total;
2579
2580         /* addr[4] + count[2] + size[2] */
2581         addr = MEM_READ_4(sc, sc->table2_base + off);
2582         info = MEM_READ_4(sc, sc->table2_base + off + 4);
2583
2584         count = info >> 16;
2585         size = info & 0xffff;
2586         total = count * size;
2587
2588         if (total > *len) {
2589                 *len = total;
2590                 return EINVAL;
2591         }
2592
2593         *len = total;
2594         ipw_read_mem_1(sc, addr, buf, total);
2595
2596         return 0;
2597 }
2598
2599 static void
2600 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2601     bus_size_t count)
2602 {
2603         for (; count > 0; offset++, datap++, count--) {
2604                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2605                 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3));
2606         }
2607 }
2608 #endif
2609
2610 static void
2611 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap,
2612     bus_size_t count)
2613 {
2614         for (; count > 0; offset++, datap++, count--) {
2615                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2616                 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap);
2617         }
2618 }
2619
2620 static void
2621 ipw_scan_start(struct ieee80211com *ic)
2622 {
2623         struct ipw_softc *sc = ic->ic_softc;
2624
2625         IPW_LOCK(sc);
2626         ipw_scan(sc);
2627         IPW_UNLOCK(sc);
2628 }
2629
2630 static void
2631 ipw_getradiocaps(struct ieee80211com *ic,
2632     int maxchans, int *nchans, struct ieee80211_channel chans[])
2633 {
2634         struct ipw_softc *sc = ic->ic_softc;
2635         uint8_t bands[IEEE80211_MODE_BYTES];
2636         int i;
2637
2638         memset(bands, 0, sizeof(bands));
2639         setbit(bands, IEEE80211_MODE_11B);
2640
2641         for (i = 1; i < 16; i++) {
2642                 if (sc->chanmask & (1 << i)) {
2643                         ieee80211_add_channel(chans, maxchans, nchans,
2644                             i, 0, 0, 0, bands);
2645                 }
2646         }
2647
2648 }
2649
2650 static void
2651 ipw_set_channel(struct ieee80211com *ic)
2652 {
2653         struct ipw_softc *sc = ic->ic_softc;
2654
2655         IPW_LOCK(sc);
2656         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2657                 ipw_disable(sc);
2658                 ipw_setchannel(sc, ic->ic_curchan);
2659                 ipw_enable(sc);
2660         }
2661         IPW_UNLOCK(sc);
2662 }
2663
2664 static void
2665 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
2666 {
2667         /* NB: all channels are scanned at once */
2668 }
2669
2670 static void
2671 ipw_scan_mindwell(struct ieee80211_scan_state *ss)
2672 {
2673         /* NB: don't try to abort scan; wait for firmware to finish */
2674 }
2675
2676 static void
2677 ipw_scan_end(struct ieee80211com *ic)
2678 {
2679         struct ipw_softc *sc = ic->ic_softc;
2680
2681         IPW_LOCK(sc);
2682         sc->flags &= ~IPW_FLAG_SCANNING;
2683         IPW_UNLOCK(sc);
2684 }