sys/dev/ipw/if_ipw.c

   1 /*      $FreeBSD$       */
   2
   3 /*-
   4  * Copyright (c) 2004-2006
   5  *      Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
   6  * Copyright (c) 2006 Sam Leffler, Errno Consulting
   7  * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice unmodified, this list of conditions, and the following
  14  *    disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __FBSDID("$FreeBSD$");
  34
  35 /*-
  36  * Intel(R) PRO/Wireless 2100 MiniPCI driver
  37  * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
  38  */
  39
  40 #include <sys/param.h>
  41 #include <sys/sysctl.h>
  42 #include <sys/sockio.h>
  43 #include <sys/mbuf.h>
  44 #include <sys/kernel.h>
  45 #include <sys/socket.h>
  46 #include <sys/systm.h>
  47 #include <sys/malloc.h>
  48 #include <sys/queue.h>
  49 #include <sys/taskqueue.h>
  50 #include <sys/module.h>
  51 #include <sys/bus.h>
  52 #include <sys/endian.h>
  53 #include <sys/linker.h>
  54 #include <sys/firmware.h>
  55
  56 #include <machine/bus.h>
  57 #include <machine/resource.h>
  58 #include <sys/rman.h>
  59
  60 #include <dev/pci/pcireg.h>
  61 #include <dev/pci/pcivar.h>
  62
  63 #include <net/bpf.h>
  64 #include <net/if.h>
  65 #include <net/if_arp.h>
  66 #include <net/ethernet.h>
  67 #include <net/if_dl.h>
  68 #include <net/if_media.h>
  69 #include <net/if_types.h>
  70
  71 #include <net80211/ieee80211_var.h>
  72 #include <net80211/ieee80211_radiotap.h>
  73
  74 #include <netinet/in.h>
  75 #include <netinet/in_systm.h>
  76 #include <netinet/in_var.h>
  77 #include <netinet/ip.h>
  78 #include <netinet/if_ether.h>
  79
  80 #include <dev/ipw/if_ipwreg.h>
  81 #include <dev/ipw/if_ipwvar.h>
  82
  83 #define IPW_DEBUG
  84 #ifdef IPW_DEBUG
  85 #define DPRINTF(x)      do { if (ipw_debug > 0) printf x; } while (0)
  86 #define DPRINTFN(n, x)  do { if (ipw_debug >= (n)) printf x; } while (0)
  87 int ipw_debug = 0;
  88 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level");
  89 #else
  90 #define DPRINTF(x)
  91 #define DPRINTFN(n, x)
  92 #endif
  93
  94 MODULE_DEPEND(ipw, pci,  1, 1, 1);
  95 MODULE_DEPEND(ipw, wlan, 1, 1, 1);
  96 MODULE_DEPEND(ipw, firmware, 1, 1, 1);
  97
  98 struct ipw_ident {
  99         uint16_t        vendor;
 100         uint16_t        device;
 101         const char      *name;
 102 };
 103
 104 static const struct ipw_ident ipw_ident_table[] = {
 105         { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" },
 106
 107         { 0, 0, NULL }
 108 };
 109
 110 static struct ieee80211vap *ipw_vap_create(struct ieee80211com *,
 111                     const char name[IFNAMSIZ], int unit, int opmode, int flags,
 112                     const uint8_t bssid[IEEE80211_ADDR_LEN],
 113                     const uint8_t mac[IEEE80211_ADDR_LEN]);
 114 static void     ipw_vap_delete(struct ieee80211vap *);
 115 static int      ipw_dma_alloc(struct ipw_softc *);
 116 static void     ipw_release(struct ipw_softc *);
 117 static void     ipw_media_status(struct ifnet *, struct ifmediareq *);
 118 static int      ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 119 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t);
 120 static void     ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *);
 121 static void     ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *);
 122 static void     ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *,
 123                     struct ipw_soft_bd *, struct ipw_soft_buf *);
 124 static void     ipw_rx_intr(struct ipw_softc *);
 125 static void     ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *);
 126 static void     ipw_tx_intr(struct ipw_softc *);
 127 static void     ipw_intr(void *);
 128 static void     ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int);
 129 static const char * ipw_cmdname(int);
 130 static int      ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t);
 131 static int      ipw_tx_start(struct ifnet *, struct mbuf *,
 132                     struct ieee80211_node *);
 133 static int      ipw_raw_xmit(struct ieee80211_node *, struct mbuf *,
 134                     const struct ieee80211_bpf_params *);
 135 static void     ipw_start(struct ifnet *);
 136 static void     ipw_start_locked(struct ifnet *);
 137 static void     ipw_watchdog(void *);
 138 static int      ipw_ioctl(struct ifnet *, u_long, caddr_t);
 139 static void     ipw_stop_master(struct ipw_softc *);
 140 static int      ipw_enable(struct ipw_softc *);
 141 static int      ipw_disable(struct ipw_softc *);
 142 static int      ipw_reset(struct ipw_softc *);
 143 static int      ipw_load_ucode(struct ipw_softc *, const char *, int);
 144 static int      ipw_load_firmware(struct ipw_softc *, const char *, int);
 145 static int      ipw_config(struct ipw_softc *);
 146 static void     ipw_assoc(struct ieee80211com *, struct ieee80211vap *);
 147 static void     ipw_disassoc(struct ieee80211com *, struct ieee80211vap *);
 148 static void     ipw_init_task(void *, int);
 149 static void     ipw_init(void *);
 150 static void     ipw_init_locked(struct ipw_softc *);
 151 static void     ipw_stop(void *);
 152 static void     ipw_stop_locked(struct ipw_softc *);
 153 static int      ipw_sysctl_stats(SYSCTL_HANDLER_ARGS);
 154 static int      ipw_sysctl_radio(SYSCTL_HANDLER_ARGS);
 155 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t);
 156 static void     ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t);
 157 #if 0
 158 static int      ipw_read_table2(struct ipw_softc *, uint32_t, void *,
 159                     uint32_t *);
 160 static void     ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *,
 161                     bus_size_t);
 162 #endif
 163 static void     ipw_write_mem_1(struct ipw_softc *, bus_size_t,
 164                     const uint8_t *, bus_size_t);
 165 static int      ipw_scan(struct ipw_softc *);
 166 static void     ipw_scan_start(struct ieee80211com *);
 167 static void     ipw_scan_end(struct ieee80211com *);
 168 static void     ipw_set_channel(struct ieee80211com *);
 169 static void     ipw_scan_curchan(struct ieee80211_scan_state *,
 170                     unsigned long maxdwell);
 171 static void     ipw_scan_mindwell(struct ieee80211_scan_state *);
 172
 173 static int ipw_probe(device_t);
 174 static int ipw_attach(device_t);
 175 static int ipw_detach(device_t);
 176 static int ipw_shutdown(device_t);
 177 static int ipw_suspend(device_t);
 178 static int ipw_resume(device_t);
 179
 180 static device_method_t ipw_methods[] = {
 181         /* Device interface */
 182         DEVMETHOD(device_probe,         ipw_probe),
 183         DEVMETHOD(device_attach,        ipw_attach),
 184         DEVMETHOD(device_detach,        ipw_detach),
 185         DEVMETHOD(device_shutdown,      ipw_shutdown),
 186         DEVMETHOD(device_suspend,       ipw_suspend),
 187         DEVMETHOD(device_resume,        ipw_resume),
 188
 189         { 0, 0 }
 190 };
 191
 192 static driver_t ipw_driver = {
 193         "ipw",
 194         ipw_methods,
 195         sizeof (struct ipw_softc)
 196 };
 197
 198 static devclass_t ipw_devclass;
 199
 200 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, 0, 0);
 201
 202 static int
 203 ipw_probe(device_t dev)
 204 {
 205         const struct ipw_ident *ident;
 206
 207         for (ident = ipw_ident_table; ident->name != NULL; ident++) {
 208                 if (pci_get_vendor(dev) == ident->vendor &&
 209                     pci_get_device(dev) == ident->device) {
 210                         device_set_desc(dev, ident->name);
 211                         return 0;
 212                 }
 213         }
 214         return ENXIO;
 215 }
 216
 217 /* Base Address Register */
 218 #define IPW_PCI_BAR0    0x10
 219
 220 static int
 221 ipw_attach(device_t dev)
 222 {
 223         struct ipw_softc *sc = device_get_softc(dev);
 224         struct ifnet *ifp;
 225         struct ieee80211com *ic;
 226         struct ieee80211_channel *c;
 227         uint16_t val;
 228         int error, i;
 229         uint8_t macaddr[IEEE80211_ADDR_LEN];
 230
 231         sc->sc_dev = dev;
 232
 233         mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
 234             MTX_DEF | MTX_RECURSE);
 235
 236         TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc);
 237         callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
 238
 239         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 240                 device_printf(dev, "chip is in D%d power mode "
 241                     "-- setting to D0\n", pci_get_powerstate(dev));
 242                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 243         }
 244
 245         pci_write_config(dev, 0x41, 0, 1);
 246
 247         /* enable bus-mastering */
 248         pci_enable_busmaster(dev);
 249
 250         sc->mem_rid = IPW_PCI_BAR0;
 251         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
 252             RF_ACTIVE);
 253         if (sc->mem == NULL) {
 254                 device_printf(dev, "could not allocate memory resource\n");
 255                 goto fail;
 256         }
 257
 258         sc->sc_st = rman_get_bustag(sc->mem);
 259         sc->sc_sh = rman_get_bushandle(sc->mem);
 260
 261         sc->irq_rid = 0;
 262         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
 263             RF_ACTIVE | RF_SHAREABLE);
 264         if (sc->irq == NULL) {
 265                 device_printf(dev, "could not allocate interrupt resource\n");
 266                 goto fail1;
 267         }
 268
 269         if (ipw_reset(sc) != 0) {
 270                 device_printf(dev, "could not reset adapter\n");
 271                 goto fail2;
 272         }
 273
 274         if (ipw_dma_alloc(sc) != 0) {
 275                 device_printf(dev, "could not allocate DMA resources\n");
 276                 goto fail2;
 277         }
 278
 279         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 280         if (ifp == NULL) {
 281                 device_printf(dev, "can not if_alloc()\n");
 282                 goto fail3;
 283         }
 284         ic = ifp->if_l2com;
 285
 286         ifp->if_softc = sc;
 287         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 288         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 289         ifp->if_init = ipw_init;
 290         ifp->if_ioctl = ipw_ioctl;
 291         ifp->if_start = ipw_start;
 292         IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
 293         ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
 294         IFQ_SET_READY(&ifp->if_snd);
 295
 296         ic->ic_ifp = ifp;
 297         ic->ic_opmode = IEEE80211_M_STA;
 298         ic->ic_phytype = IEEE80211_T_DS;
 299
 300         /* set device capabilities */
 301         ic->ic_caps =
 302                   IEEE80211_C_STA               /* station mode supported */
 303                 | IEEE80211_C_IBSS              /* IBSS mode supported */
 304                 | IEEE80211_C_MONITOR           /* monitor mode supported */
 305                 | IEEE80211_C_PMGT              /* power save supported */
 306                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 307                 | IEEE80211_C_WPA               /* 802.11i supported */
 308                 ;
 309
 310         /* read MAC address from EEPROM */
 311         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0);
 312         macaddr[0] = val >> 8;
 313         macaddr[1] = val & 0xff;
 314         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1);
 315         macaddr[2] = val >> 8;
 316         macaddr[3] = val & 0xff;
 317         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2);
 318         macaddr[4] = val >> 8;
 319         macaddr[5] = val & 0xff;
 320
 321         /* set supported .11b channels (read from EEPROM) */
 322         if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0)
 323                 val = 0x7ff; /* default to channels 1-11 */
 324         val <<= 1;
 325         for (i = 1; i < 16; i++) {
 326                 if (val & (1 << i)) {
 327                         c = &ic->ic_channels[ic->ic_nchans++];
 328                         c->ic_freq = ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 329                         c->ic_flags = IEEE80211_CHAN_B;
 330                         c->ic_ieee = i;
 331                 }
 332         }
 333
 334         /* check support for radio transmitter switch in EEPROM */
 335         if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8))
 336                 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH;
 337
 338         ieee80211_ifattach(ic, macaddr);
 339         ic->ic_scan_start = ipw_scan_start;
 340         ic->ic_scan_end = ipw_scan_end;
 341         ic->ic_set_channel = ipw_set_channel;
 342         ic->ic_scan_curchan = ipw_scan_curchan;
 343         ic->ic_scan_mindwell = ipw_scan_mindwell;
 344         ic->ic_raw_xmit = ipw_raw_xmit;
 345
 346         ic->ic_vap_create = ipw_vap_create;
 347         ic->ic_vap_delete = ipw_vap_delete;
 348
 349         ieee80211_radiotap_attach(ic,
 350             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 351                 IPW_TX_RADIOTAP_PRESENT,
 352             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 353                 IPW_RX_RADIOTAP_PRESENT);
 354
 355         /*
 356          * Add a few sysctl knobs.
 357          */
 358         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 359             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio",
 360             CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I",
 361             "radio transmitter switch state (0=off, 1=on)");
 362
 363         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 364             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
 365             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S",
 366             "statistics");
 367
 368         /*
 369          * Hook our interrupt after all initialization is complete.
 370          */
 371         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 372             NULL, ipw_intr, sc, &sc->sc_ih);
 373         if (error != 0) {
 374                 device_printf(dev, "could not set up interrupt\n");
 375                 goto fail4;
 376         }
 377
 378         if (bootverbose)
 379                 ieee80211_announce(ic);
 380
 381         return 0;
 382 fail4:
 383         if_free(ifp);
 384 fail3:
 385         ipw_release(sc);
 386 fail2:
 387         bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
 388 fail1:
 389         bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
 390 fail:
 391         mtx_destroy(&sc->sc_mtx);
 392         return ENXIO;
 393 }
 394
 395 static int
 396 ipw_detach(device_t dev)
 397 {
 398         struct ipw_softc *sc = device_get_softc(dev);
 399         struct ifnet *ifp = sc->sc_ifp;
 400         struct ieee80211com *ic = ifp->if_l2com;
 401
 402         ieee80211_draintask(ic, &sc->sc_init_task);
 403         ipw_stop(sc);
 404
 405         ieee80211_ifdetach(ic);
 406
 407         callout_drain(&sc->sc_wdtimer);
 408
 409         ipw_release(sc);
 410
 411         bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 412         bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
 413
 414         bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
 415
 416         if_free(ifp);
 417
 418         if (sc->sc_firmware != NULL) {
 419                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 420                 sc->sc_firmware = NULL;
 421         }
 422
 423         mtx_destroy(&sc->sc_mtx);
 424
 425         return 0;
 426 }
 427
 428 static struct ieee80211vap *
 429 ipw_vap_create(struct ieee80211com *ic,
 430         const char name[IFNAMSIZ], int unit, int opmode, int flags,
 431         const uint8_t bssid[IEEE80211_ADDR_LEN],
 432         const uint8_t mac[IEEE80211_ADDR_LEN])
 433 {
 434         struct ifnet *ifp = ic->ic_ifp;
 435         struct ipw_softc *sc = ifp->if_softc;
 436         struct ipw_vap *ivp;
 437         struct ieee80211vap *vap;
 438         const struct firmware *fp;
 439         const struct ipw_firmware_hdr *hdr;
 440         const char *imagename;
 441
 442         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 443                 return NULL;
 444
 445         switch (opmode) {
 446         case IEEE80211_M_STA:
 447                 imagename = "ipw_bss";
 448                 break;
 449         case IEEE80211_M_IBSS:
 450                 imagename = "ipw_ibss";
 451                 break;
 452         case IEEE80211_M_MONITOR:
 453                 imagename = "ipw_monitor";
 454                 break;
 455         default:
 456                 return NULL;
 457         }
 458
 459         /*
 460          * Load firmware image using the firmware(9) subsystem.  Doing
 461          * this unlocked is ok since we're single-threaded by the
 462          * 802.11 layer.
 463          */
 464         if (sc->sc_firmware == NULL ||
 465             strcmp(sc->sc_firmware->name, imagename) != 0) {
 466                 if (sc->sc_firmware != NULL)
 467                         firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 468                 sc->sc_firmware = firmware_get(imagename);
 469         }
 470         if (sc->sc_firmware == NULL) {
 471                 device_printf(sc->sc_dev,
 472                     "could not load firmware image '%s'\n", imagename);
 473                 return NULL;
 474         }
 475         fp = sc->sc_firmware;
 476         if (fp->datasize < sizeof *hdr) {
 477                 device_printf(sc->sc_dev,
 478                     "firmware image too short %zu\n", fp->datasize);
 479                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 480                 sc->sc_firmware = NULL;
 481                 return NULL;
 482         }
 483         hdr = (const struct ipw_firmware_hdr *)fp->data;
 484         if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) +
 485             le32toh(hdr->ucodesz)) {
 486                 device_printf(sc->sc_dev,
 487                     "firmware image too short %zu\n", fp->datasize);
 488                 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
 489                 sc->sc_firmware = NULL;
 490                 return NULL;
 491         }
 492
 493         ivp = (struct ipw_vap *) malloc(sizeof(struct ipw_vap),
 494             M_80211_VAP, M_NOWAIT | M_ZERO);
 495         if (ivp == NULL)
 496                 return NULL;
 497         vap = &ivp->vap;
 498
 499         ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
 500         /* override with driver methods */
 501         ivp->newstate = vap->iv_newstate;
 502         vap->iv_newstate = ipw_newstate;
 503
 504         /* complete setup */
 505         ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status);
 506         ic->ic_opmode = opmode;
 507         return vap;
 508 }
 509
 510 static void
 511 ipw_vap_delete(struct ieee80211vap *vap)
 512 {
 513         struct ipw_vap *ivp = IPW_VAP(vap);
 514
 515         ieee80211_vap_detach(vap);
 516         free(ivp, M_80211_VAP);
 517 }
 518
 519 static int
 520 ipw_dma_alloc(struct ipw_softc *sc)
 521 {
 522         struct ipw_soft_bd *sbd;
 523         struct ipw_soft_hdr *shdr;
 524         struct ipw_soft_buf *sbuf;
 525         bus_addr_t physaddr;
 526         int error, i;
 527
 528         /*
 529          * Allocate and map tx ring.
 530          */
 531         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 532             BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL,
 533             NULL, &sc->tbd_dmat);
 534         if (error != 0) {
 535                 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
 536                 goto fail;
 537         }
 538
 539         error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list,
 540             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map);
 541         if (error != 0) {
 542                 device_printf(sc->sc_dev,
 543                     "could not allocate tx ring DMA memory\n");
 544                 goto fail;
 545         }
 546
 547         error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list,
 548             IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0);
 549         if (error != 0) {
 550                 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n");
 551                 goto fail;
 552         }
 553
 554         /*
 555          * Allocate and map rx ring.
 556          */
 557         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 558             BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL,
 559             NULL, &sc->rbd_dmat);
 560         if (error != 0) {
 561                 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n");
 562                 goto fail;
 563         }
 564
 565         error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list,
 566             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map);
 567         if (error != 0) {
 568                 device_printf(sc->sc_dev,
 569                     "could not allocate rx ring DMA memory\n");
 570                 goto fail;
 571         }
 572
 573         error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list,
 574             IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0);
 575         if (error != 0) {
 576                 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n");
 577                 goto fail;
 578         }
 579
 580         /*
 581          * Allocate and map status ring.
 582          */
 583         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 584             BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0,
 585             NULL, NULL, &sc->status_dmat);
 586         if (error != 0) {
 587                 device_printf(sc->sc_dev,
 588                     "could not create status ring DMA tag\n");
 589                 goto fail;
 590         }
 591
 592         error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list,
 593             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map);
 594         if (error != 0) {
 595                 device_printf(sc->sc_dev,
 596                     "could not allocate status ring DMA memory\n");
 597                 goto fail;
 598         }
 599
 600         error = bus_dmamap_load(sc->status_dmat, sc->status_map,
 601             sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys,
 602             0);
 603         if (error != 0) {
 604                 device_printf(sc->sc_dev,
 605                     "could not map status ring DMA memory\n");
 606                 goto fail;
 607         }
 608
 609         /*
 610          * Allocate command DMA map.
 611          */
 612         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 613             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1,
 614             sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat);
 615         if (error != 0) {
 616                 device_printf(sc->sc_dev, "could not create command DMA tag\n");
 617                 goto fail;
 618         }
 619
 620         error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map);
 621         if (error != 0) {
 622                 device_printf(sc->sc_dev,
 623                     "could not create command DMA map\n");
 624                 goto fail;
 625         }
 626
 627         /*
 628          * Allocate headers DMA maps.
 629          */
 630         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 631             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1,
 632             sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat);
 633         if (error != 0) {
 634                 device_printf(sc->sc_dev, "could not create header DMA tag\n");
 635                 goto fail;
 636         }
 637
 638         SLIST_INIT(&sc->free_shdr);
 639         for (i = 0; i < IPW_NDATA; i++) {
 640                 shdr = &sc->shdr_list[i];
 641                 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map);
 642                 if (error != 0) {
 643                         device_printf(sc->sc_dev,
 644                             "could not create header DMA map\n");
 645                         goto fail;
 646                 }
 647                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
 648         }
 649
 650         /*
 651          * Allocate tx buffers DMA maps.
 652          */
 653         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 654             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0,
 655             NULL, NULL, &sc->txbuf_dmat);
 656         if (error != 0) {
 657                 device_printf(sc->sc_dev, "could not create tx DMA tag\n");
 658                 goto fail;
 659         }
 660
 661         SLIST_INIT(&sc->free_sbuf);
 662         for (i = 0; i < IPW_NDATA; i++) {
 663                 sbuf = &sc->tx_sbuf_list[i];
 664                 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map);
 665                 if (error != 0) {
 666                         device_printf(sc->sc_dev,
 667                             "could not create tx DMA map\n");
 668                         goto fail;
 669                 }
 670                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
 671         }
 672
 673         /*
 674          * Initialize tx ring.
 675          */
 676         for (i = 0; i < IPW_NTBD; i++) {
 677                 sbd = &sc->stbd_list[i];
 678                 sbd->bd = &sc->tbd_list[i];
 679                 sbd->type = IPW_SBD_TYPE_NOASSOC;
 680         }
 681
 682         /*
 683          * Pre-allocate rx buffers and DMA maps.
 684          */
 685         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 686             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
 687             NULL, &sc->rxbuf_dmat);
 688         if (error != 0) {
 689                 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
 690                 goto fail;
 691         }
 692
 693         for (i = 0; i < IPW_NRBD; i++) {
 694                 sbd = &sc->srbd_list[i];
 695                 sbuf = &sc->rx_sbuf_list[i];
 696                 sbd->bd = &sc->rbd_list[i];
 697
 698                 sbuf->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
 699                 if (sbuf->m == NULL) {
 700                         device_printf(sc->sc_dev,
 701                             "could not allocate rx mbuf\n");
 702                         error = ENOMEM;
 703                         goto fail;
 704                 }
 705
 706                 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map);
 707                 if (error != 0) {
 708                         device_printf(sc->sc_dev,
 709                             "could not create rx DMA map\n");
 710                         goto fail;
 711                 }
 712
 713                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
 714                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
 715                     &physaddr, 0);
 716                 if (error != 0) {
 717                         device_printf(sc->sc_dev,
 718                             "could not map rx DMA memory\n");
 719                         goto fail;
 720                 }
 721
 722                 sbd->type = IPW_SBD_TYPE_DATA;
 723                 sbd->priv = sbuf;
 724                 sbd->bd->physaddr = htole32(physaddr);
 725                 sbd->bd->len = htole32(MCLBYTES);
 726         }
 727
 728         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
 729
 730         return 0;
 731
 732 fail:   ipw_release(sc);
 733         return error;
 734 }
 735
 736 static void
 737 ipw_release(struct ipw_softc *sc)
 738 {
 739         struct ipw_soft_buf *sbuf;
 740         int i;
 741
 742         if (sc->tbd_dmat != NULL) {
 743                 if (sc->stbd_list != NULL) {
 744                         bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map);
 745                         bus_dmamem_free(sc->tbd_dmat, sc->tbd_list,
 746                             sc->tbd_map);
 747                 }
 748                 bus_dma_tag_destroy(sc->tbd_dmat);
 749         }
 750
 751         if (sc->rbd_dmat != NULL) {
 752                 if (sc->rbd_list != NULL) {
 753                         bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map);
 754                         bus_dmamem_free(sc->rbd_dmat, sc->rbd_list,
 755                             sc->rbd_map);
 756                 }
 757                 bus_dma_tag_destroy(sc->rbd_dmat);
 758         }
 759
 760         if (sc->status_dmat != NULL) {
 761                 if (sc->status_list != NULL) {
 762                         bus_dmamap_unload(sc->status_dmat, sc->status_map);
 763                         bus_dmamem_free(sc->status_dmat, sc->status_list,
 764                             sc->status_map);
 765                 }
 766                 bus_dma_tag_destroy(sc->status_dmat);
 767         }
 768
 769         for (i = 0; i < IPW_NTBD; i++)
 770                 ipw_release_sbd(sc, &sc->stbd_list[i]);
 771
 772         if (sc->cmd_dmat != NULL) {
 773                 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map);
 774                 bus_dma_tag_destroy(sc->cmd_dmat);
 775         }
 776
 777         if (sc->hdr_dmat != NULL) {
 778                 for (i = 0; i < IPW_NDATA; i++)
 779                         bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map);
 780                 bus_dma_tag_destroy(sc->hdr_dmat);
 781         }
 782
 783         if (sc->txbuf_dmat != NULL) {
 784                 for (i = 0; i < IPW_NDATA; i++) {
 785                         bus_dmamap_destroy(sc->txbuf_dmat,
 786                             sc->tx_sbuf_list[i].map);
 787                 }
 788                 bus_dma_tag_destroy(sc->txbuf_dmat);
 789         }
 790
 791         if (sc->rxbuf_dmat != NULL) {
 792                 for (i = 0; i < IPW_NRBD; i++) {
 793                         sbuf = &sc->rx_sbuf_list[i];
 794                         if (sbuf->m != NULL) {
 795                                 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map,
 796                                     BUS_DMASYNC_POSTREAD);
 797                                 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
 798                                 m_freem(sbuf->m);
 799                         }
 800                         bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map);
 801                 }
 802                 bus_dma_tag_destroy(sc->rxbuf_dmat);
 803         }
 804 }
 805
 806 static int
 807 ipw_shutdown(device_t dev)
 808 {
 809         struct ipw_softc *sc = device_get_softc(dev);
 810
 811         ipw_stop(sc);
 812
 813         return 0;
 814 }
 815
 816 static int
 817 ipw_suspend(device_t dev)
 818 {
 819         struct ipw_softc *sc = device_get_softc(dev);
 820
 821         ipw_stop(sc);
 822
 823         return 0;
 824 }
 825
 826 static int
 827 ipw_resume(device_t dev)
 828 {
 829         struct ipw_softc *sc = device_get_softc(dev);
 830         struct ifnet *ifp = sc->sc_ifp;
 831
 832         pci_write_config(dev, 0x41, 0, 1);
 833
 834         if (ifp->if_flags & IFF_UP)
 835                 ipw_init(sc);
 836
 837         return 0;
 838 }
 839
 840 static int
 841 ipw_cvtrate(int ipwrate)
 842 {
 843         switch (ipwrate) {
 844         case IPW_RATE_DS1:      return 2;
 845         case IPW_RATE_DS2:      return 4;
 846         case IPW_RATE_DS5:      return 11;
 847         case IPW_RATE_DS11:     return 22;
 848         }
 849         return 0;
 850 }
 851
 852 /*
 853  * The firmware automatically adapts the transmit speed. We report its current
 854  * value here.
 855  */
 856 static void
 857 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 858 {
 859         struct ieee80211vap *vap = ifp->if_softc;
 860         struct ieee80211com *ic = vap->iv_ic;
 861         struct ipw_softc *sc = ic->ic_ifp->if_softc;
 862
 863         /* read current transmission rate from adapter */
 864         vap->iv_bss->ni_txrate = ipw_cvtrate(
 865             ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf);
 866         ieee80211_media_status(ifp, imr);
 867 }
 868
 869 static int
 870 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 871 {
 872         struct ipw_vap *ivp = IPW_VAP(vap);
 873         struct ieee80211com *ic = vap->iv_ic;
 874         struct ifnet *ifp = ic->ic_ifp;
 875         struct ipw_softc *sc = ifp->if_softc;
 876         enum ieee80211_state ostate;
 877
 878         DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
 879                 ieee80211_state_name[vap->iv_state],
 880                 ieee80211_state_name[nstate], sc->flags));
 881
 882         ostate = vap->iv_state;
 883         IEEE80211_UNLOCK(ic);
 884
 885         switch (nstate) {
 886         case IEEE80211_S_RUN:
 887                 if (ic->ic_opmode == IEEE80211_M_IBSS) {
 888                         /*
 889                          * XXX when joining an ibss network we are called
 890                          * with a SCAN -> RUN transition on scan complete.
 891                          * Use that to call ipw_auth_and_assoc.  On completing
 892                          * the join we are then called again with an
 893                          * AUTH -> RUN transition and we want to do nothing.
 894                          * This is all totally bogus and needs to be redone.
 895                          */
 896                         if (ostate == IEEE80211_S_SCAN)
 897                                 ipw_assoc(ic, vap);
 898                 }
 899                 break;
 900
 901         case IEEE80211_S_INIT:
 902                 if (sc->flags & IPW_FLAG_ASSOCIATED)
 903                         ipw_disassoc(ic, vap);
 904                 break;
 905
 906         case IEEE80211_S_AUTH:
 907                 ipw_assoc(ic, vap);
 908                 break;
 909
 910         case IEEE80211_S_ASSOC:
 911                 /*
 912                  * If we are not transitioning from AUTH the resend the
 913                  * association request.
 914                  */
 915                 if (ostate != IEEE80211_S_AUTH)
 916                         ipw_assoc(ic, vap);
 917                 break;
 918
 919         default:
 920                 break;
 921         }
 922         IEEE80211_LOCK(ic);
 923         return ivp->newstate(vap, nstate, arg);
 924 }
 925
 926 /*
 927  * Read 16 bits at address 'addr' from the serial EEPROM.
 928  */
 929 static uint16_t
 930 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr)
 931 {
 932         uint32_t tmp;
 933         uint16_t val;
 934         int n;
 935
 936         /* clock C once before the first command */
 937         IPW_EEPROM_CTL(sc, 0);
 938         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 939         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 940         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 941
 942         /* write start bit (1) */
 943         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 944         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 945
 946         /* write READ opcode (10) */
 947         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 948         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 949         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 950         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 951
 952         /* write address A7-A0 */
 953         for (n = 7; n >= 0; n--) {
 954                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 955                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D));
 956                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 957                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C);
 958         }
 959
 960         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 961
 962         /* read data Q15-Q0 */
 963         val = 0;
 964         for (n = 15; n >= 0; n--) {
 965                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 966                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 967                 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL);
 968                 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n;
 969         }
 970
 971         IPW_EEPROM_CTL(sc, 0);
 972
 973         /* clear Chip Select and clock C */
 974         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 975         IPW_EEPROM_CTL(sc, 0);
 976         IPW_EEPROM_CTL(sc, IPW_EEPROM_C);
 977
 978         return le16toh(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 ifnet *ifp = sc->sc_ifp;
1004         struct ieee80211com *ic = ifp->if_l2com;
1005         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1006         uint32_t state;
1007
1008         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1009
1010         state = le32toh(*mtod(sbuf->m, uint32_t *));
1011
1012         switch (state) {
1013         case IPW_STATE_ASSOCIATED:
1014                 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n",
1015                         IEEESTATE(vap), sc->flags));
1016                 /* XXX suppress state change in case the fw auto-associates */
1017                 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) {
1018                         DPRINTF(("Unexpected association (%s, flags 0x%x)\n",
1019                                 IEEESTATE(vap), sc->flags));
1020                         break;
1021                 }
1022                 sc->flags &= ~IPW_FLAG_ASSOCIATING;
1023                 sc->flags |= IPW_FLAG_ASSOCIATED;
1024                 ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
1025                 break;
1026
1027         case IPW_STATE_SCANNING:
1028                 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n",
1029                         IEEESTATE(vap), sc->flags));
1030                 /*
1031                  * NB: Check driver state for association on assoc
1032                  * loss as the firmware will immediately start to
1033                  * scan and we would treat it as a beacon miss if
1034                  * we checked the 802.11 layer state.
1035                  */
1036                 if (sc->flags & IPW_FLAG_ASSOCIATED) {
1037                         /* XXX probably need to issue disassoc to fw */
1038                         ieee80211_beacon_miss(ic);
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                         ieee80211_scan_done(vap);
1058                         sc->flags &= ~IPW_FLAG_SCANNING;
1059                         sc->sc_scan_timer = 0;
1060                 }
1061                 break;
1062
1063         case IPW_STATE_ASSOCIATION_LOST:
1064                 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n",
1065                         IEEESTATE(vap), sc->flags));
1066                 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1067                 if (vap->iv_state == IEEE80211_S_RUN)
1068                         ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1069                 break;
1070
1071         case IPW_STATE_DISABLED:
1072                 /* XXX? is this right? */
1073                 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING |
1074                     IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1075                 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n",
1076                         IEEESTATE(vap), sc->flags));
1077                 break;
1078
1079         case IPW_STATE_RADIO_DISABLED:
1080                 device_printf(sc->sc_dev, "radio turned off\n");
1081                 ieee80211_notify_radio(ic, 0);
1082                 ipw_stop_locked(sc);
1083                 /* XXX start polling thread to detect radio on */
1084                 break;
1085
1086         default:
1087                 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n",
1088                         __func__, state, IEEESTATE(vap), sc->flags));
1089                 break;
1090         }
1091 #undef IEEESTATE
1092 }
1093
1094 /*
1095  * Set driver state for current channel.
1096  */
1097 static void
1098 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan)
1099 {
1100         struct ifnet *ifp = sc->sc_ifp;
1101         struct ieee80211com *ic = ifp->if_l2com;
1102
1103         ic->ic_curchan = chan;
1104         ieee80211_radiotap_chan_change(ic);
1105 }
1106
1107 /*
1108  * XXX: Hack to set the current channel to the value advertised in beacons or
1109  * probe responses. Only used during AP detection.
1110  */
1111 static void
1112 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m)
1113 {
1114         struct ifnet *ifp = sc->sc_ifp;
1115         struct ieee80211com *ic = ifp->if_l2com;
1116         struct ieee80211_channel *c;
1117         struct ieee80211_frame *wh;
1118         uint8_t subtype;
1119         uint8_t *frm, *efrm;
1120
1121         wh = mtod(m, struct ieee80211_frame *);
1122
1123         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
1124                 return;
1125
1126         subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1127
1128         if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1129             subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1130                 return;
1131
1132         /* XXX use ieee80211_parse_beacon */
1133         frm = (uint8_t *)(wh + 1);
1134         efrm = mtod(m, uint8_t *) + m->m_len;
1135
1136         frm += 12;      /* skip tstamp, bintval and capinfo fields */
1137         while (frm < efrm) {
1138                 if (*frm == IEEE80211_ELEMID_DSPARMS)
1139 #if IEEE80211_CHAN_MAX < 255
1140                 if (frm[2] <= IEEE80211_CHAN_MAX)
1141 #endif
1142                 {
1143                         DPRINTF(("Fixing channel to %d\n", frm[2]));
1144                         c = ieee80211_find_channel(ic,
1145                                 ieee80211_ieee2mhz(frm[2], 0),
1146                                 IEEE80211_CHAN_B);
1147                         if (c == NULL)
1148                                 c = &ic->ic_channels[0];
1149                         ipw_setcurchan(sc, c);
1150                 }
1151
1152                 frm += frm[1] + 2;
1153         }
1154 }
1155
1156 static void
1157 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status,
1158     struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf)
1159 {
1160         struct ifnet *ifp = sc->sc_ifp;
1161         struct ieee80211com *ic = ifp->if_l2com;
1162         struct mbuf *mnew, *m;
1163         struct ieee80211_node *ni;
1164         bus_addr_t physaddr;
1165         int error;
1166         int8_t rssi, nf;
1167         IPW_LOCK_DECL;
1168
1169         DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len),
1170             status->rssi));
1171
1172         if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) ||
1173             le32toh(status->len) > MCLBYTES)
1174                 return;
1175
1176         /*
1177          * Try to allocate a new mbuf for this ring element and load it before
1178          * processing the current mbuf. If the ring element cannot be loaded,
1179          * drop the received packet and reuse the old mbuf. In the unlikely
1180          * case that the old mbuf can't be reloaded either, explicitly panic.
1181          */
1182         mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1183         if (mnew == NULL) {
1184                 ifp->if_ierrors++;
1185                 return;
1186         }
1187
1188         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1189         bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
1190
1191         error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *),
1192             MCLBYTES, ipw_dma_map_addr, &physaddr, 0);
1193         if (error != 0) {
1194                 m_freem(mnew);
1195
1196                 /* try to reload the old mbuf */
1197                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
1198                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
1199                     &physaddr, 0);
1200                 if (error != 0) {
1201                         /* very unlikely that it will fail... */
1202                         panic("%s: could not load old rx mbuf",
1203                             device_get_name(sc->sc_dev));
1204                 }
1205                 ifp->if_ierrors++;
1206                 return;
1207         }
1208
1209         /*
1210          * New mbuf successfully loaded, update Rx ring and continue
1211          * processing.
1212          */
1213         m = sbuf->m;
1214         sbuf->m = mnew;
1215         sbd->bd->physaddr = htole32(physaddr);
1216
1217         /* finalize mbuf */
1218         m->m_pkthdr.rcvif = ifp;
1219         m->m_pkthdr.len = m->m_len = le32toh(status->len);
1220
1221         rssi = status->rssi + IPW_RSSI_TO_DBM;
1222         nf = -95;
1223         if (ieee80211_radiotap_active(ic)) {
1224                 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap;
1225
1226                 tap->wr_flags = 0;
1227                 tap->wr_antsignal = rssi;
1228                 tap->wr_antnoise = nf;
1229         }
1230
1231         if (sc->flags & IPW_FLAG_SCANNING)
1232                 ipw_fix_channel(sc, m);
1233
1234         IPW_UNLOCK(sc);
1235         ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1236         if (ni != NULL) {
1237                 (void) ieee80211_input(ni, m, rssi, nf);
1238                 ieee80211_free_node(ni);
1239         } else
1240                 (void) ieee80211_input_all(ic, m, rssi, nf);
1241         IPW_LOCK(sc);
1242
1243         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1244 }
1245
1246 static void
1247 ipw_rx_intr(struct ipw_softc *sc)
1248 {
1249         struct ipw_status *status;
1250         struct ipw_soft_bd *sbd;
1251         struct ipw_soft_buf *sbuf;
1252         uint32_t r, i;
1253
1254         if (!(sc->flags & IPW_FLAG_FW_INITED))
1255                 return;
1256
1257         r = CSR_READ_4(sc, IPW_CSR_RX_READ);
1258
1259         bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD);
1260
1261         for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) {
1262                 status = &sc->status_list[i];
1263                 sbd = &sc->srbd_list[i];
1264                 sbuf = sbd->priv;
1265
1266                 switch (le16toh(status->code) & 0xf) {
1267                 case IPW_STATUS_CODE_COMMAND:
1268                         ipw_rx_cmd_intr(sc, sbuf);
1269                         break;
1270
1271                 case IPW_STATUS_CODE_NEWSTATE:
1272                         ipw_rx_newstate_intr(sc, sbuf);
1273                         break;
1274
1275                 case IPW_STATUS_CODE_DATA_802_3:
1276                 case IPW_STATUS_CODE_DATA_802_11:
1277                         ipw_rx_data_intr(sc, status, sbd, sbuf);
1278                         break;
1279
1280                 case IPW_STATUS_CODE_NOTIFICATION:
1281                         DPRINTFN(2, ("notification status, len %u flags 0x%x\n",
1282                             le32toh(status->len), status->flags));
1283                         /* XXX maybe drive state machine AUTH->ASSOC? */
1284                         break;
1285
1286                 default:
1287                         device_printf(sc->sc_dev, "unexpected status code %u\n",
1288                             le16toh(status->code));
1289                 }
1290
1291                 /* firmware was killed, stop processing received frames */
1292                 if (!(sc->flags & IPW_FLAG_FW_INITED))
1293                         return;
1294
1295                 sbd->bd->flags = 0;
1296         }
1297
1298         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1299
1300         /* kick the firmware */
1301         sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1;
1302         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
1303 }
1304
1305 static void
1306 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd)
1307 {
1308         struct ipw_soft_hdr *shdr;
1309         struct ipw_soft_buf *sbuf;
1310
1311         switch (sbd->type) {
1312         case IPW_SBD_TYPE_COMMAND:
1313                 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map,
1314                     BUS_DMASYNC_POSTWRITE);
1315                 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map);
1316                 break;
1317
1318         case IPW_SBD_TYPE_HEADER:
1319                 shdr = sbd->priv;
1320                 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE);
1321                 bus_dmamap_unload(sc->hdr_dmat, shdr->map);
1322                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
1323                 break;
1324
1325         case IPW_SBD_TYPE_DATA:
1326                 sbuf = sbd->priv;
1327                 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map,
1328                     BUS_DMASYNC_POSTWRITE);
1329                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1330                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
1331
1332                 if (sbuf->m->m_flags & M_TXCB)
1333                         ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/);
1334                 m_freem(sbuf->m);
1335                 ieee80211_free_node(sbuf->ni);
1336
1337                 sc->sc_tx_timer = 0;
1338                 break;
1339         }
1340
1341         sbd->type = IPW_SBD_TYPE_NOASSOC;
1342 }
1343
1344 static void
1345 ipw_tx_intr(struct ipw_softc *sc)
1346 {
1347         struct ifnet *ifp = sc->sc_ifp;
1348         struct ipw_soft_bd *sbd;
1349         uint32_t r, i;
1350
1351         if (!(sc->flags & IPW_FLAG_FW_INITED))
1352                 return;
1353
1354         r = CSR_READ_4(sc, IPW_CSR_TX_READ);
1355
1356         for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) {
1357                 sbd = &sc->stbd_list[i];
1358
1359                 if (sbd->type == IPW_SBD_TYPE_DATA)
1360                         ifp->if_opackets++;
1361
1362                 ipw_release_sbd(sc, sbd);
1363                 sc->txfree++;
1364         }
1365
1366         /* remember what the firmware has processed */
1367         sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1;
1368
1369         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1370         ipw_start_locked(ifp);
1371 }
1372
1373 static void
1374 ipw_fatal_error_intr(struct ipw_softc *sc)
1375 {
1376         struct ifnet *ifp = sc->sc_ifp;
1377         struct ieee80211com *ic = ifp->if_l2com;
1378         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1379
1380         device_printf(sc->sc_dev, "firmware error\n");
1381         if (vap != NULL)
1382                 ieee80211_cancel_scan(vap);
1383         ieee80211_runtask(ic, &sc->sc_init_task);
1384 }
1385
1386 static void
1387 ipw_intr(void *arg)
1388 {
1389         struct ipw_softc *sc = arg;
1390         uint32_t r;
1391         IPW_LOCK_DECL;
1392
1393         IPW_LOCK(sc);
1394
1395         r = CSR_READ_4(sc, IPW_CSR_INTR);
1396         if (r == 0 || r == 0xffffffff)
1397                 goto done;
1398
1399         /* disable interrupts */
1400         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1401
1402         /* acknowledge all interrupts */
1403         CSR_WRITE_4(sc, IPW_CSR_INTR, r);
1404
1405         if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) {
1406                 ipw_fatal_error_intr(sc);
1407                 goto done;
1408         }
1409
1410         if (r & IPW_INTR_FW_INIT_DONE)
1411                 wakeup(sc);
1412
1413         if (r & IPW_INTR_RX_TRANSFER)
1414                 ipw_rx_intr(sc);
1415
1416         if (r & IPW_INTR_TX_TRANSFER)
1417                 ipw_tx_intr(sc);
1418
1419         /* re-enable interrupts */
1420         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1421 done:
1422         IPW_UNLOCK(sc);
1423 }
1424
1425 static void
1426 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1427 {
1428         if (error != 0)
1429                 return;
1430
1431         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1432
1433         *(bus_addr_t *)arg = segs[0].ds_addr;
1434 }
1435
1436 static const char *
1437 ipw_cmdname(int cmd)
1438 {
1439 #define N(a)    (sizeof(a) / sizeof(a[0]))
1440         static const struct {
1441                 int     cmd;
1442                 const char *name;
1443         } cmds[] = {
1444                 { IPW_CMD_ADD_MULTICAST,        "ADD_MULTICAST" },
1445                 { IPW_CMD_BROADCAST_SCAN,       "BROADCAST_SCAN" },
1446                 { IPW_CMD_DISABLE,              "DISABLE" },
1447                 { IPW_CMD_DISABLE_PHY,          "DISABLE_PHY" },
1448                 { IPW_CMD_ENABLE,               "ENABLE" },
1449                 { IPW_CMD_PREPARE_POWER_DOWN,   "PREPARE_POWER_DOWN" },
1450                 { IPW_CMD_SET_BASIC_TX_RATES,   "SET_BASIC_TX_RATES" },
1451                 { IPW_CMD_SET_BEACON_INTERVAL,  "SET_BEACON_INTERVAL" },
1452                 { IPW_CMD_SET_CHANNEL,          "SET_CHANNEL" },
1453                 { IPW_CMD_SET_CONFIGURATION,    "SET_CONFIGURATION" },
1454                 { IPW_CMD_SET_DESIRED_BSSID,    "SET_DESIRED_BSSID" },
1455                 { IPW_CMD_SET_ESSID,            "SET_ESSID" },
1456                 { IPW_CMD_SET_FRAG_THRESHOLD,   "SET_FRAG_THRESHOLD" },
1457                 { IPW_CMD_SET_MAC_ADDRESS,      "SET_MAC_ADDRESS" },
1458                 { IPW_CMD_SET_MANDATORY_BSSID,  "SET_MANDATORY_BSSID" },
1459                 { IPW_CMD_SET_MODE,             "SET_MODE" },
1460                 { IPW_CMD_SET_MSDU_TX_RATES,    "SET_MSDU_TX_RATES" },
1461                 { IPW_CMD_SET_POWER_MODE,       "SET_POWER_MODE" },
1462                 { IPW_CMD_SET_RTS_THRESHOLD,    "SET_RTS_THRESHOLD" },
1463                 { IPW_CMD_SET_SCAN_OPTIONS,     "SET_SCAN_OPTIONS" },
1464                 { IPW_CMD_SET_SECURITY_INFO,    "SET_SECURITY_INFO" },
1465                 { IPW_CMD_SET_TX_POWER_INDEX,   "SET_TX_POWER_INDEX" },
1466                 { IPW_CMD_SET_TX_RATES,         "SET_TX_RATES" },
1467                 { IPW_CMD_SET_WEP_FLAGS,        "SET_WEP_FLAGS" },
1468                 { IPW_CMD_SET_WEP_KEY,          "SET_WEP_KEY" },
1469                 { IPW_CMD_SET_WEP_KEY_INDEX,    "SET_WEP_KEY_INDEX" },
1470                 { IPW_CMD_SET_WPA_IE,           "SET_WPA_IE" },
1471
1472         };
1473         static char buf[12];
1474         int i;
1475
1476         for (i = 0; i < N(cmds); i++)
1477                 if (cmds[i].cmd == cmd)
1478                         return cmds[i].name;
1479         snprintf(buf, sizeof(buf), "%u", cmd);
1480         return buf;
1481 #undef N
1482 }
1483
1484 /*
1485  * Send a command to the firmware and wait for the acknowledgement.
1486  */
1487 static int
1488 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len)
1489 {
1490         struct ipw_soft_bd *sbd;
1491         bus_addr_t physaddr;
1492         int error;
1493
1494         IPW_LOCK_ASSERT(sc);
1495
1496         if (sc->flags & IPW_FLAG_BUSY) {
1497                 device_printf(sc->sc_dev, "%s: %s not sent, busy\n",
1498                         __func__, ipw_cmdname(type));
1499                 return EAGAIN;
1500         }
1501         sc->flags |= IPW_FLAG_BUSY;
1502
1503         sbd = &sc->stbd_list[sc->txcur];
1504
1505         error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd,
1506             sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0);
1507         if (error != 0) {
1508                 device_printf(sc->sc_dev, "could not map command DMA memory\n");
1509                 sc->flags &= ~IPW_FLAG_BUSY;
1510                 return error;
1511         }
1512
1513         sc->cmd.type = htole32(type);
1514         sc->cmd.subtype = 0;
1515         sc->cmd.len = htole32(len);
1516         sc->cmd.seq = 0;
1517         memcpy(sc->cmd.data, data, len);
1518
1519         sbd->type = IPW_SBD_TYPE_COMMAND;
1520         sbd->bd->physaddr = htole32(physaddr);
1521         sbd->bd->len = htole32(sizeof (struct ipw_cmd));
1522         sbd->bd->nfrag = 1;
1523         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND |
1524             IPW_BD_FLAG_TX_LAST_FRAGMENT;
1525
1526         bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE);
1527         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1528
1529 #ifdef IPW_DEBUG
1530         if (ipw_debug >= 4) {
1531                 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type,
1532                     0, 0, len);
1533                 /* Print the data buffer in the higher debug level */
1534                 if (ipw_debug >= 9 && len > 0) {
1535                         printf(" data: 0x");
1536                         for (int i = 1; i <= len; i++)
1537                                 printf("%1D", (u_char *)data + len - i, "");
1538                 }
1539                 printf("\n");
1540         }
1541 #endif
1542
1543         /* kick firmware */
1544         sc->txfree--;
1545         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1546         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1547
1548         /* wait at most one second for command to complete */
1549         error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz);
1550         if (error != 0) {
1551                 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n",
1552                     __func__, ipw_cmdname(type), error);
1553                 sc->flags &= ~IPW_FLAG_BUSY;
1554                 return (error);
1555         }
1556         return (0);
1557 }
1558
1559 static int
1560 ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni)
1561 {
1562         struct ipw_softc *sc = ifp->if_softc;
1563         struct ieee80211com *ic = ifp->if_l2com;
1564         struct ieee80211vap *vap = ni->ni_vap;
1565         struct ieee80211_frame *wh;
1566         struct ipw_soft_bd *sbd;
1567         struct ipw_soft_hdr *shdr;
1568         struct ipw_soft_buf *sbuf;
1569         struct ieee80211_key *k;
1570         struct mbuf *mnew;
1571         bus_dma_segment_t segs[IPW_MAX_NSEG];
1572         bus_addr_t physaddr;
1573         int nsegs, error, i;
1574
1575         wh = mtod(m0, struct ieee80211_frame *);
1576
1577         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1578                 k = ieee80211_crypto_encap(ni, m0);
1579                 if (k == NULL) {
1580                         m_freem(m0);
1581                         return ENOBUFS;
1582                 }
1583                 /* packet header may have moved, reset our local pointer */
1584                 wh = mtod(m0, struct ieee80211_frame *);
1585         }
1586
1587         if (ieee80211_radiotap_active_vap(vap)) {
1588                 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap;
1589
1590                 tap->wt_flags = 0;
1591
1592                 ieee80211_radiotap_tx(vap, m0);
1593         }
1594
1595         shdr = SLIST_FIRST(&sc->free_shdr);
1596         sbuf = SLIST_FIRST(&sc->free_sbuf);
1597         KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool"));
1598
1599         shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND);
1600         shdr->hdr.subtype = 0;
1601         shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_WEP) ? 1 : 0;
1602         shdr->hdr.encrypt = 0;
1603         shdr->hdr.keyidx = 0;
1604         shdr->hdr.keysz = 0;
1605         shdr->hdr.fragmentsz = 0;
1606         IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2);
1607         if (ic->ic_opmode == IEEE80211_M_STA)
1608                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3);
1609         else
1610                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1);
1611
1612         /* trim IEEE802.11 header */
1613         m_adj(m0, sizeof (struct ieee80211_frame));
1614
1615         error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs,
1616             &nsegs, 0);
1617         if (error != 0 && error != EFBIG) {
1618                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1619                     error);
1620                 m_freem(m0);
1621                 return error;
1622         }
1623         if (error != 0) {
1624                 mnew = m_defrag(m0, M_DONTWAIT);
1625                 if (mnew == NULL) {
1626                         device_printf(sc->sc_dev,
1627                             "could not defragment mbuf\n");
1628                         m_freem(m0);
1629                         return ENOBUFS;
1630                 }
1631                 m0 = mnew;
1632
1633                 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0,
1634                     segs, &nsegs, 0);
1635                 if (error != 0) {
1636                         device_printf(sc->sc_dev,
1637                             "could not map mbuf (error %d)\n", error);
1638                         m_freem(m0);
1639                         return error;
1640                 }
1641         }
1642
1643         error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr,
1644             sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0);
1645         if (error != 0) {
1646                 device_printf(sc->sc_dev, "could not map header DMA memory\n");
1647                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1648                 m_freem(m0);
1649                 return error;
1650         }
1651
1652         SLIST_REMOVE_HEAD(&sc->free_sbuf, next);
1653         SLIST_REMOVE_HEAD(&sc->free_shdr, next);
1654
1655         sbd = &sc->stbd_list[sc->txcur];
1656         sbd->type = IPW_SBD_TYPE_HEADER;
1657         sbd->priv = shdr;
1658         sbd->bd->physaddr = htole32(physaddr);
1659         sbd->bd->len = htole32(sizeof (struct ipw_hdr));
1660         sbd->bd->nfrag = 1 + nsegs;
1661         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 |
1662             IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1663
1664         DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n",
1665             shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted,
1666             shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr,
1667             ":"));
1668
1669         sc->txfree--;
1670         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1671
1672         sbuf->m = m0;
1673         sbuf->ni = ni;
1674
1675         for (i = 0; i < nsegs; i++) {
1676                 sbd = &sc->stbd_list[sc->txcur];
1677
1678                 sbd->bd->physaddr = htole32(segs[i].ds_addr);
1679                 sbd->bd->len = htole32(segs[i].ds_len);
1680                 sbd->bd->nfrag = 0;
1681                 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3;
1682                 if (i == nsegs - 1) {
1683                         sbd->type = IPW_SBD_TYPE_DATA;
1684                         sbd->priv = sbuf;
1685                         sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT;
1686                 } else {
1687                         sbd->type = IPW_SBD_TYPE_NOASSOC;
1688                         sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1689                 }
1690
1691                 DPRINTFN(5, ("sending fragment (%d)\n", i));
1692
1693                 sc->txfree--;
1694                 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1695         }
1696
1697         bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE);
1698         bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE);
1699         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1700
1701         /* kick firmware */
1702         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1703
1704         return 0;
1705 }
1706
1707 static int
1708 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1709         const struct ieee80211_bpf_params *params)
1710 {
1711         /* no support; just discard */
1712         m_freem(m);
1713         ieee80211_free_node(ni);
1714         return 0;
1715 }
1716
1717 static void
1718 ipw_start(struct ifnet *ifp)
1719 {
1720         struct ipw_softc *sc = ifp->if_softc;
1721         IPW_LOCK_DECL;
1722
1723         IPW_LOCK(sc);
1724         ipw_start_locked(ifp);
1725         IPW_UNLOCK(sc);
1726 }
1727
1728 static void
1729 ipw_start_locked(struct ifnet *ifp)
1730 {
1731         struct ipw_softc *sc = ifp->if_softc;
1732         struct ieee80211_node *ni;
1733         struct mbuf *m;
1734
1735         IPW_LOCK_ASSERT(sc);
1736
1737         for (;;) {
1738                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1739                 if (m == NULL)
1740                         break;
1741                 if (sc->txfree < 1 + IPW_MAX_NSEG) {
1742                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
1743                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1744                         break;
1745                 }
1746                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1747                 if (ipw_tx_start(ifp, m, ni) != 0) {
1748                         ieee80211_free_node(ni);
1749                         ifp->if_oerrors++;
1750                         break;
1751                 }
1752                 /* start watchdog timer */
1753                 sc->sc_tx_timer = 5;
1754         }
1755 }
1756
1757 static void
1758 ipw_watchdog(void *arg)
1759 {
1760         struct ipw_softc *sc = arg;
1761         struct ifnet *ifp = sc->sc_ifp;
1762         struct ieee80211com *ic = ifp->if_l2com;
1763
1764         IPW_LOCK_ASSERT(sc);
1765
1766         if (sc->sc_tx_timer > 0) {
1767                 if (--sc->sc_tx_timer == 0) {
1768                         if_printf(ifp, "device timeout\n");
1769                         ifp->if_oerrors++;
1770                         taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1771                 }
1772         }
1773         if (sc->sc_scan_timer > 0) {
1774                 if (--sc->sc_scan_timer == 0) {
1775                         DPRINTFN(3, ("Scan timeout\n"));
1776                         /* End the scan */
1777                         if (sc->flags & IPW_FLAG_SCANNING) {
1778                                 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps));
1779                                 sc->flags &= ~IPW_FLAG_SCANNING;
1780                         }
1781                 }
1782         }
1783         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1784                 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
1785 }
1786
1787 static int
1788 ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1789 {
1790         struct ipw_softc *sc = ifp->if_softc;
1791         struct ieee80211com *ic = ifp->if_l2com;
1792         struct ifreq *ifr = (struct ifreq *) data;
1793         int error = 0, startall = 0;
1794         IPW_LOCK_DECL;
1795
1796         switch (cmd) {
1797         case SIOCSIFFLAGS:
1798                 IPW_LOCK(sc);
1799                 if (ifp->if_flags & IFF_UP) {
1800                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1801                                 ipw_init_locked(sc);
1802                                 startall = 1;
1803                         }
1804                 } else {
1805                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1806                                 ipw_stop_locked(sc);
1807                 }
1808                 IPW_UNLOCK(sc);
1809                 if (startall)
1810                         ieee80211_start_all(ic);
1811                 break;
1812         case SIOCGIFMEDIA:
1813                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1814                 break;
1815         case SIOCGIFADDR:
1816                 error = ether_ioctl(ifp, cmd, data);
1817                 break;
1818         default:
1819                 error = EINVAL;
1820                 break;
1821         }
1822         return error;
1823 }
1824
1825 static void
1826 ipw_stop_master(struct ipw_softc *sc)
1827 {
1828         uint32_t tmp;
1829         int ntries;
1830
1831         /* disable interrupts */
1832         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1833
1834         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER);
1835         for (ntries = 0; ntries < 50; ntries++) {
1836                 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED)
1837                         break;
1838                 DELAY(10);
1839         }
1840         if (ntries == 50)
1841                 device_printf(sc->sc_dev, "timeout waiting for master\n");
1842
1843         tmp = CSR_READ_4(sc, IPW_CSR_RST);
1844         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET);
1845
1846         /* Clear all flags except the following */
1847         sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH;
1848 }
1849
1850 static int
1851 ipw_reset(struct ipw_softc *sc)
1852 {
1853         uint32_t tmp;
1854         int ntries;
1855
1856         ipw_stop_master(sc);
1857
1858         /* move adapter to D0 state */
1859         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1860         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1861
1862         /* wait for clock stabilization */
1863         for (ntries = 0; ntries < 1000; ntries++) {
1864                 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY)
1865                         break;
1866                 DELAY(200);
1867         }
1868         if (ntries == 1000)
1869                 return EIO;
1870
1871         tmp =  CSR_READ_4(sc, IPW_CSR_RST);
1872         CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET);
1873
1874         DELAY(10);
1875
1876         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1877         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1878
1879         return 0;
1880 }
1881
1882 static int
1883 ipw_waitfordisable(struct ipw_softc *sc, int waitfor)
1884 {
1885         int ms = hz < 1000 ? 1 : hz/10;
1886         int i, error;
1887
1888         for (i = 0; i < 100; i++) {
1889                 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor)
1890                         return 0;
1891                 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms);
1892                 if (error == 0 || error != EWOULDBLOCK)
1893                         return 0;
1894         }
1895         DPRINTF(("%s: timeout waiting for %s\n",
1896                 __func__, waitfor ? "disable" : "enable"));
1897         return ETIMEDOUT;
1898 }
1899
1900 static int
1901 ipw_enable(struct ipw_softc *sc)
1902 {
1903         int error;
1904
1905         if ((sc->flags & IPW_FLAG_ENABLED) == 0) {
1906                 DPRINTF(("Enable adapter\n"));
1907                 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
1908                 if (error != 0)
1909                         return error;
1910                 error = ipw_waitfordisable(sc, 0);
1911                 if (error != 0)
1912                         return error;
1913                 sc->flags |= IPW_FLAG_ENABLED;
1914         }
1915         return 0;
1916 }
1917
1918 static int
1919 ipw_disable(struct ipw_softc *sc)
1920 {
1921         int error;
1922
1923         if (sc->flags & IPW_FLAG_ENABLED) {
1924                 DPRINTF(("Disable adapter\n"));
1925                 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0);
1926                 if (error != 0)
1927                         return error;
1928                 error = ipw_waitfordisable(sc, 1);
1929                 if (error != 0)
1930                         return error;
1931                 sc->flags &= ~IPW_FLAG_ENABLED;
1932         }
1933         return 0;
1934 }
1935
1936 /*
1937  * Upload the microcode to the device.
1938  */
1939 static int
1940 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size)
1941 {
1942         int ntries;
1943
1944         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
1945         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1946
1947         MEM_WRITE_2(sc, 0x220000, 0x0703);
1948         MEM_WRITE_2(sc, 0x220000, 0x0707);
1949
1950         MEM_WRITE_1(sc, 0x210014, 0x72);
1951         MEM_WRITE_1(sc, 0x210014, 0x72);
1952
1953         MEM_WRITE_1(sc, 0x210000, 0x40);
1954         MEM_WRITE_1(sc, 0x210000, 0x00);
1955         MEM_WRITE_1(sc, 0x210000, 0x40);
1956
1957         MEM_WRITE_MULTI_1(sc, 0x210010, uc, size);
1958
1959         MEM_WRITE_1(sc, 0x210000, 0x00);
1960         MEM_WRITE_1(sc, 0x210000, 0x00);
1961         MEM_WRITE_1(sc, 0x210000, 0x80);
1962
1963         MEM_WRITE_2(sc, 0x220000, 0x0703);
1964         MEM_WRITE_2(sc, 0x220000, 0x0707);
1965
1966         MEM_WRITE_1(sc, 0x210014, 0x72);
1967         MEM_WRITE_1(sc, 0x210014, 0x72);
1968
1969         MEM_WRITE_1(sc, 0x210000, 0x00);
1970         MEM_WRITE_1(sc, 0x210000, 0x80);
1971
1972         for (ntries = 0; ntries < 10; ntries++) {
1973                 if (MEM_READ_1(sc, 0x210000) & 1)
1974                         break;
1975                 DELAY(10);
1976         }
1977         if (ntries == 10) {
1978                 device_printf(sc->sc_dev,
1979                     "timeout waiting for ucode to initialize\n");
1980                 return EIO;
1981         }
1982
1983         MEM_WRITE_4(sc, 0x3000e0, 0);
1984
1985         return 0;
1986 }
1987
1988 /* set of macros to handle unaligned little endian data in firmware image */
1989 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
1990 #define GETLE16(p) ((p)[0] | (p)[1] << 8)
1991 static int
1992 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size)
1993 {
1994         const uint8_t *p, *end;
1995         uint32_t tmp, dst;
1996         uint16_t len;
1997         int error;
1998
1999         p = fw;
2000         end = fw + size;
2001         while (p < end) {
2002                 dst = GETLE32(p); p += 4;
2003                 len = GETLE16(p); p += 2;
2004
2005                 ipw_write_mem_1(sc, dst, p, len);
2006                 p += len;
2007         }
2008
2009         CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK |
2010             IPW_IO_LED_OFF);
2011
2012         /* enable interrupts */
2013         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
2014
2015         /* kick the firmware */
2016         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
2017
2018         tmp = CSR_READ_4(sc, IPW_CSR_CTL);
2019         CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY);
2020
2021         /* wait at most one second for firmware initialization to complete */
2022         if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) {
2023                 device_printf(sc->sc_dev, "timeout waiting for firmware "
2024                     "initialization to complete\n");
2025                 return error;
2026         }
2027
2028         tmp = CSR_READ_4(sc, IPW_CSR_IO);
2029         CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK |
2030             IPW_IO_GPIO3_MASK);
2031
2032         return 0;
2033 }
2034
2035 static int
2036 ipw_setwepkeys(struct ipw_softc *sc)
2037 {
2038         struct ifnet *ifp = sc->sc_ifp;
2039         struct ieee80211com *ic = ifp->if_l2com;
2040         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2041         struct ipw_wep_key wepkey;
2042         struct ieee80211_key *wk;
2043         int error, i;
2044
2045         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2046                 wk = &vap->iv_nw_keys[i];
2047
2048                 if (wk->wk_cipher == NULL ||
2049                     wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP)
2050                         continue;
2051
2052                 wepkey.idx = i;
2053                 wepkey.len = wk->wk_keylen;
2054                 memset(wepkey.key, 0, sizeof wepkey.key);
2055                 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2056                 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2057                     wepkey.len));
2058                 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey,
2059                     sizeof wepkey);
2060                 if (error != 0)
2061                         return error;
2062         }
2063         return 0;
2064 }
2065
2066 static int
2067 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen)
2068 {
2069         struct ipw_wpa_ie wpaie;
2070
2071         memset(&wpaie, 0, sizeof(wpaie));
2072         wpaie.len = htole32(ielen);
2073         /* XXX verify length */
2074         memcpy(&wpaie.ie, ie, ielen);
2075         DPRINTF(("Setting WPA IE\n"));
2076         return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie));
2077 }
2078
2079 static int
2080 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid)
2081 {
2082         static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
2083
2084         if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) {
2085                 DPRINTF(("Setting mandatory BSSID to null\n"));
2086                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0);
2087         } else {
2088                 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":"));
2089                 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID,
2090                         bssid, IEEE80211_ADDR_LEN);
2091         }
2092 }
2093
2094 static int
2095 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen)
2096 {
2097         if (ssidlen == 0) {
2098                 /*
2099                  * A bug in the firmware breaks the ``don't associate''
2100                  * bit in the scan options command.  To compensate for
2101                  * this install a bogus ssid when no ssid is specified
2102                  * so the firmware won't try to associate.
2103                  */
2104                 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n"));
2105                 return ipw_cmd(sc, IPW_CMD_SET_ESSID,
2106                         "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27"
2107                         "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31"
2108                         "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b"
2109                         "\x3c\x3d", IEEE80211_NWID_LEN);
2110         } else {
2111 #ifdef IPW_DEBUG
2112                 if (ipw_debug > 0) {
2113                         printf("Setting ESSID to ");
2114                         ieee80211_print_essid(ssid, ssidlen);
2115                         printf("\n");
2116                 }
2117 #endif
2118                 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen);
2119         }
2120 }
2121
2122 static int
2123 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags)
2124 {
2125         struct ipw_scan_options opts;
2126
2127         DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags));
2128         opts.channels = htole32(chanmask);
2129         opts.flags = htole32(flags);
2130         return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts));
2131 }
2132
2133 static int
2134 ipw_scan(struct ipw_softc *sc)
2135 {
2136         uint32_t params;
2137         int error;
2138
2139         DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags));
2140
2141         if (sc->flags & IPW_FLAG_SCANNING)
2142                 return (EBUSY);
2143         sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK;
2144
2145         /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */
2146         error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE);
2147         if (error != 0)
2148                 goto done;
2149
2150         /*
2151          * Setup null/bogus ssid so firmware doesn't use any previous
2152          * ssid to try and associate.  This is because the ``don't
2153          * associate'' option bit is broken (sigh).
2154          */
2155         error = ipw_setssid(sc, NULL, 0);
2156         if (error != 0)
2157                 goto done;
2158
2159         /*
2160          * NB: the adapter may be disabled on association lost;
2161          *     if so just re-enable it to kick off scanning.
2162          */
2163         DPRINTF(("Starting scan\n"));
2164         sc->sc_scan_timer = 3;
2165         if (sc->flags & IPW_FLAG_ENABLED) {
2166                 params = 0;                             /* XXX? */
2167                 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN,
2168                                 &params, sizeof(params));
2169         } else
2170                 error = ipw_enable(sc);
2171 done:
2172         if (error != 0) {
2173                 DPRINTF(("Scan failed\n"));
2174                 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK);
2175         }
2176         return (error);
2177 }
2178
2179 static int
2180 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan)
2181 {
2182         struct ifnet *ifp = sc->sc_ifp;
2183         struct ieee80211com *ic = ifp->if_l2com;
2184         uint32_t data;
2185         int error;
2186
2187         data = htole32(ieee80211_chan2ieee(ic, chan));
2188         DPRINTF(("Setting channel to %u\n", le32toh(data)));
2189         error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data);
2190         if (error == 0)
2191                 ipw_setcurchan(sc, chan);
2192         return error;
2193 }
2194
2195 static void
2196 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2197 {
2198         struct ifnet *ifp = vap->iv_ic->ic_ifp;
2199         struct ipw_softc *sc = ifp->if_softc;
2200         struct ieee80211_node *ni = vap->iv_bss;
2201         struct ipw_security security;
2202         uint32_t data;
2203         int error;
2204         IPW_LOCK_DECL;
2205
2206         IPW_LOCK(sc);
2207         error = ipw_disable(sc);
2208         if (error != 0)
2209                 goto done;
2210
2211         memset(&security, 0, sizeof security);
2212         security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ?
2213             IPW_AUTH_SHARED : IPW_AUTH_OPEN;
2214         security.ciphers = htole32(IPW_CIPHER_NONE);
2215         DPRINTF(("Setting authmode to %u\n", security.authmode));
2216         error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security,
2217             sizeof security);
2218         if (error != 0)
2219                 goto done;
2220
2221         data = htole32(vap->iv_rtsthreshold);
2222         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2223         error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2224         if (error != 0)
2225                 goto done;
2226
2227         data = htole32(vap->iv_fragthreshold);
2228         DPRINTF(("Setting frag threshold to %u\n", le32toh(data)));
2229         error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2230         if (error != 0)
2231                 goto done;
2232
2233         if (vap->iv_flags & IEEE80211_F_PRIVACY) {
2234                 error = ipw_setwepkeys(sc);
2235                 if (error != 0)
2236                         goto done;
2237
2238                 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) {
2239                         data = htole32(vap->iv_def_txkey);
2240                         DPRINTF(("Setting wep tx key index to %u\n",
2241                                 le32toh(data)));
2242                         error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data,
2243                             sizeof data);
2244                         if (error != 0)
2245                                 goto done;
2246                 }
2247         }
2248
2249         data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0);
2250         DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data)));
2251         error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data);
2252         if (error != 0)
2253                 goto done;
2254
2255         error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen);
2256         if (error != 0)
2257                 goto done;
2258
2259         error = ipw_setbssid(sc, ni->ni_bssid);
2260         if (error != 0)
2261                 goto done;
2262
2263         if (vap->iv_appie_assocreq != NULL) {
2264                 struct ieee80211_appie *ie = vap->iv_appie_assocreq;
2265                 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len);
2266                 if (error != 0)
2267                         goto done;
2268         }
2269         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2270                 error = ipw_setchannel(sc, ni->ni_chan);
2271                 if (error != 0)
2272                         goto done;
2273         }
2274
2275         /* lock scan to ap's channel and enable associate */
2276         error = ipw_setscanopts(sc,
2277             1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0);
2278         if (error != 0)
2279                 goto done;
2280
2281         error = ipw_enable(sc);         /* finally, enable adapter */
2282         if (error == 0)
2283                 sc->flags |= IPW_FLAG_ASSOCIATING;
2284 done:
2285         IPW_UNLOCK(sc);
2286 }
2287
2288 static void
2289 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2290 {
2291         struct ifnet *ifp = vap->iv_ic->ic_ifp;
2292         struct ieee80211_node *ni = vap->iv_bss;
2293         struct ipw_softc *sc = ifp->if_softc;
2294         IPW_LOCK_DECL;
2295
2296         IPW_LOCK(sc);
2297         DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":"));
2298         /*
2299          * NB: don't try to do this if ipw_stop_master has
2300          *     shutdown the firmware and disabled interrupts.
2301          */
2302         if (sc->flags & IPW_FLAG_FW_INITED) {
2303                 sc->flags &= ~IPW_FLAG_ASSOCIATED;
2304                 /*
2305                  * NB: firmware currently ignores bssid parameter, but
2306                  *     supply it in case this changes (follow linux driver).
2307                  */
2308                 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE,
2309                         ni->ni_bssid, IEEE80211_ADDR_LEN);
2310         }
2311         IPW_UNLOCK(sc);
2312 }
2313
2314 /*
2315  * Handler for sc_init_task.  This is a simple wrapper around ipw_init().
2316  * It is called on firmware panics or on watchdog timeouts.
2317  */
2318 static void
2319 ipw_init_task(void *context, int pending)
2320 {
2321         ipw_init(context);
2322 }
2323
2324 static void
2325 ipw_init(void *priv)
2326 {
2327         struct ipw_softc *sc = priv;
2328         struct ifnet *ifp = sc->sc_ifp;
2329         struct ieee80211com *ic = ifp->if_l2com;
2330         IPW_LOCK_DECL;
2331
2332         IPW_LOCK(sc);
2333         ipw_init_locked(sc);
2334         IPW_UNLOCK(sc);
2335
2336         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2337                 ieee80211_start_all(ic);                /* start all vap's */
2338 }
2339
2340 static void
2341 ipw_init_locked(struct ipw_softc *sc)
2342 {
2343         struct ifnet *ifp = sc->sc_ifp;
2344         struct ieee80211com *ic = ifp->if_l2com;
2345         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2346         const struct firmware *fp;
2347         const struct ipw_firmware_hdr *hdr;
2348         const char *fw;
2349
2350         IPW_LOCK_ASSERT(sc);
2351
2352         DPRINTF(("%s: state %s flags 0x%x\n", __func__,
2353                 ieee80211_state_name[vap->iv_state], sc->flags));
2354
2355         /*
2356          * Avoid re-entrant calls.  We need to release the mutex in ipw_init()
2357          * when loading the firmware and we don't want to be called during this
2358          * operation.
2359          */
2360         if (sc->flags & IPW_FLAG_INIT_LOCKED)
2361                 return;
2362         sc->flags |= IPW_FLAG_INIT_LOCKED;
2363
2364         ipw_stop_locked(sc);
2365
2366         if (ipw_reset(sc) != 0) {
2367                 device_printf(sc->sc_dev, "could not reset adapter\n");
2368                 goto fail;
2369         }
2370
2371         if (sc->sc_firmware == NULL) {
2372                 device_printf(sc->sc_dev, "no firmware\n");
2373                 goto fail;
2374         }
2375         /* NB: consistency already checked on load */
2376         fp = sc->sc_firmware;
2377         hdr = (const struct ipw_firmware_hdr *)fp->data;
2378
2379         DPRINTF(("Loading firmware image '%s'\n", fp->name));
2380         fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz);
2381         if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) {
2382                 device_printf(sc->sc_dev, "could not load microcode\n");
2383                 goto fail;
2384         }
2385
2386         ipw_stop_master(sc);
2387
2388         /*
2389          * Setup tx, rx and status rings.
2390          */
2391         sc->txold = IPW_NTBD - 1;
2392         sc->txcur = 0;
2393         sc->txfree = IPW_NTBD - 2;
2394         sc->rxcur = IPW_NRBD - 1;
2395
2396         CSR_WRITE_4(sc, IPW_CSR_TX_BASE,  sc->tbd_phys);
2397         CSR_WRITE_4(sc, IPW_CSR_TX_SIZE,  IPW_NTBD);
2398         CSR_WRITE_4(sc, IPW_CSR_TX_READ,  0);
2399         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
2400
2401         CSR_WRITE_4(sc, IPW_CSR_RX_BASE,  sc->rbd_phys);
2402         CSR_WRITE_4(sc, IPW_CSR_RX_SIZE,  IPW_NRBD);
2403         CSR_WRITE_4(sc, IPW_CSR_RX_READ,  0);
2404         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
2405
2406         CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys);
2407
2408         fw = (const char *)fp->data + sizeof *hdr;
2409         if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) {
2410                 device_printf(sc->sc_dev, "could not load firmware\n");
2411                 goto fail;
2412         }
2413
2414         sc->flags |= IPW_FLAG_FW_INITED;
2415
2416         /* retrieve information tables base addresses */
2417         sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE);
2418         sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE);
2419
2420         ipw_write_table1(sc, IPW_INFO_LOCK, 0);
2421
2422         if (ipw_config(sc) != 0) {
2423                 device_printf(sc->sc_dev, "device configuration failed\n");
2424                 goto fail;
2425         }
2426
2427         callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
2428         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2429         ifp->if_drv_flags |= IFF_DRV_RUNNING;
2430
2431         sc->flags &=~ IPW_FLAG_INIT_LOCKED;
2432         return;
2433
2434 fail:
2435         ipw_stop_locked(sc);
2436         sc->flags &=~ IPW_FLAG_INIT_LOCKED;
2437 }
2438
2439 static int
2440 ipw_config(struct ipw_softc *sc)
2441 {
2442         struct ifnet *ifp = sc->sc_ifp;
2443         struct ieee80211com *ic = ifp->if_l2com;
2444         struct ipw_configuration config;
2445         uint32_t data;
2446         int error;
2447
2448         error = ipw_disable(sc);
2449         if (error != 0)
2450                 return error;
2451
2452         switch (ic->ic_opmode) {
2453         case IEEE80211_M_STA:
2454         case IEEE80211_M_HOSTAP:
2455         case IEEE80211_M_WDS:           /* XXX */
2456                 data = htole32(IPW_MODE_BSS);
2457                 break;
2458         case IEEE80211_M_IBSS:
2459         case IEEE80211_M_AHDEMO:
2460                 data = htole32(IPW_MODE_IBSS);
2461                 break;
2462         case IEEE80211_M_MONITOR:
2463                 data = htole32(IPW_MODE_MONITOR);
2464                 break;
2465         default:
2466                 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
2467                 return EINVAL;
2468         }
2469         DPRINTF(("Setting mode to %u\n", le32toh(data)));
2470         error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data);
2471         if (error != 0)
2472                 return error;
2473
2474         if (ic->ic_opmode == IEEE80211_M_IBSS ||
2475             ic->ic_opmode == IEEE80211_M_MONITOR) {
2476                 error = ipw_setchannel(sc, ic->ic_curchan);
2477                 if (error != 0)
2478                         return error;
2479         }
2480
2481         if (ic->ic_opmode == IEEE80211_M_MONITOR)
2482                 return ipw_enable(sc);
2483
2484         config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK |
2485             IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE);
2486         if (ic->ic_opmode == IEEE80211_M_IBSS)
2487                 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START);
2488         if (ifp->if_flags & IFF_PROMISC)
2489                 config.flags |= htole32(IPW_CFG_PROMISCUOUS);
2490         config.bss_chan = htole32(0x3fff); /* channels 1-14 */
2491         config.ibss_chan = htole32(0x7ff); /* channels 1-11 */
2492         DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags)));
2493         error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config);
2494         if (error != 0)
2495                 return error;
2496
2497         data = htole32(0x3); /* 1, 2 */
2498         DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data)));
2499         error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data);
2500         if (error != 0)
2501                 return error;
2502
2503         /* NB: use the same rate set */
2504         DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data)));
2505         error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data);
2506         if (error != 0)
2507                 return error;
2508
2509         data = htole32(0xf); /* 1, 2, 5.5, 11 */
2510         DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data)));
2511         error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data);
2512         if (error != 0)
2513                 return error;
2514
2515         data = htole32(IPW_POWER_MODE_CAM);
2516         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2517         error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data);
2518         if (error != 0)
2519                 return error;
2520
2521         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2522                 data = htole32(32); /* default value */
2523                 DPRINTF(("Setting tx power index to %u\n", le32toh(data)));
2524                 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data,
2525                     sizeof data);
2526                 if (error != 0)
2527                         return error;
2528         }
2529
2530         return 0;
2531 }
2532
2533 static void
2534 ipw_stop(void *priv)
2535 {
2536         struct ipw_softc *sc = priv;
2537         IPW_LOCK_DECL;
2538
2539         IPW_LOCK(sc);
2540         ipw_stop_locked(sc);
2541         IPW_UNLOCK(sc);
2542 }
2543
2544 static void
2545 ipw_stop_locked(struct ipw_softc *sc)
2546 {
2547         struct ifnet *ifp = sc->sc_ifp;
2548         int i;
2549
2550         IPW_LOCK_ASSERT(sc);
2551
2552         callout_stop(&sc->sc_wdtimer);
2553         ipw_stop_master(sc);
2554
2555         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET);
2556
2557         /*
2558          * Release tx buffers.
2559          */
2560         for (i = 0; i < IPW_NTBD; i++)
2561                 ipw_release_sbd(sc, &sc->stbd_list[i]);
2562
2563         sc->sc_tx_timer = 0;
2564         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2565 }
2566
2567 static int
2568 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)
2569 {
2570         struct ipw_softc *sc = arg1;
2571         uint32_t i, size, buf[256];
2572
2573         memset(buf, 0, sizeof buf);
2574
2575         if (!(sc->flags & IPW_FLAG_FW_INITED))
2576                 return SYSCTL_OUT(req, buf, sizeof buf);
2577
2578         CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base);
2579
2580         size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256);
2581         for (i = 1; i < size; i++)
2582                 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA));
2583
2584         return SYSCTL_OUT(req, buf, size);
2585 }
2586
2587 static int
2588 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)
2589 {
2590         struct ipw_softc *sc = arg1;
2591         int val;
2592
2593         val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) &&
2594                 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED));
2595
2596         return SYSCTL_OUT(req, &val, sizeof val);
2597 }
2598
2599 static uint32_t
2600 ipw_read_table1(struct ipw_softc *sc, uint32_t off)
2601 {
2602         return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off));
2603 }
2604
2605 static void
2606 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info)
2607 {
2608         MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info);
2609 }
2610
2611 #if 0
2612 static int
2613 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len)
2614 {
2615         uint32_t addr, info;
2616         uint16_t count, size;
2617         uint32_t total;
2618
2619         /* addr[4] + count[2] + size[2] */
2620         addr = MEM_READ_4(sc, sc->table2_base + off);
2621         info = MEM_READ_4(sc, sc->table2_base + off + 4);
2622
2623         count = info >> 16;
2624         size = info & 0xffff;
2625         total = count * size;
2626
2627         if (total > *len) {
2628                 *len = total;
2629                 return EINVAL;
2630         }
2631
2632         *len = total;
2633         ipw_read_mem_1(sc, addr, buf, total);
2634
2635         return 0;
2636 }
2637
2638 static void
2639 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2640     bus_size_t count)
2641 {
2642         for (; count > 0; offset++, datap++, count--) {
2643                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2644                 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3));
2645         }
2646 }
2647 #endif
2648
2649 static void
2650 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap,
2651     bus_size_t count)
2652 {
2653         for (; count > 0; offset++, datap++, count--) {
2654                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2655                 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap);
2656         }
2657 }
2658
2659 static void
2660 ipw_scan_start(struct ieee80211com *ic)
2661 {
2662         struct ifnet *ifp = ic->ic_ifp;
2663         struct ipw_softc *sc = ifp->if_softc;
2664         IPW_LOCK_DECL;
2665
2666         IPW_LOCK(sc);
2667         ipw_scan(sc);
2668         IPW_UNLOCK(sc);
2669 }
2670
2671 static void
2672 ipw_set_channel(struct ieee80211com *ic)
2673 {
2674         struct ifnet *ifp = ic->ic_ifp;
2675         struct ipw_softc *sc = ifp->if_softc;
2676         IPW_LOCK_DECL;
2677
2678         IPW_LOCK(sc);
2679         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2680                 ipw_disable(sc);
2681                 ipw_setchannel(sc, ic->ic_curchan);
2682                 ipw_enable(sc);
2683         }
2684         IPW_UNLOCK(sc);
2685 }
2686
2687 static void
2688 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
2689 {
2690         /* NB: all channels are scanned at once */
2691 }
2692
2693 static void
2694 ipw_scan_mindwell(struct ieee80211_scan_state *ss)
2695 {
2696         /* NB: don't try to abort scan; wait for firmware to finish */
2697 }
2698
2699 static void
2700 ipw_scan_end(struct ieee80211com *ic)
2701 {
2702         struct ifnet *ifp = ic->ic_ifp;
2703         struct ipw_softc *sc = ifp->if_softc;
2704         IPW_LOCK_DECL;
2705
2706         IPW_LOCK(sc);
2707         sc->flags &= ~IPW_FLAG_SCANNING;
2708         IPW_UNLOCK(sc);
2709 }