6/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  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice unmodified, this list of conditions, and the following
  12  *    disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 /*-
  34  * Intel(R) PRO/Wireless 2100 MiniPCI driver
  35  * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/sysctl.h>
  40 #include <sys/sockio.h>
  41 #include <sys/mbuf.h>
  42 #include <sys/kernel.h>
  43 #include <sys/socket.h>
  44 #include <sys/systm.h>
  45 #include <sys/malloc.h>
  46 #include <sys/module.h>
  47 #include <sys/bus.h>
  48 #include <sys/endian.h>
  49
  50 #include <machine/bus.h>
  51 #include <machine/resource.h>
  52 #include <machine/clock.h>
  53 #include <sys/rman.h>
  54
  55 #include <dev/pci/pcireg.h>
  56 #include <dev/pci/pcivar.h>
  57
  58 #include <net/bpf.h>
  59 #include <net/if.h>
  60 #include <net/if_arp.h>
  61 #include <net/ethernet.h>
  62 #include <net/if_dl.h>
  63 #include <net/if_media.h>
  64 #include <net/if_types.h>
  65
  66 #include <netinet/in.h>
  67 #include <netinet/in_systm.h>
  68 #include <netinet/in_var.h>
  69 #include <netinet/ip.h>
  70 #include <netinet/if_ether.h>
  71
  72 #include <net80211/ieee80211_var.h>
  73 #include <net80211/ieee80211_radiotap.h>
  74
  75 #include <dev/ipw/if_ipwreg.h>
  76 #include <dev/ipw/if_ipwvar.h>
  77
  78 #ifdef IPW_DEBUG
  79 #define DPRINTF(x)      do { if (ipw_debug > 0) printf x; } while (0)
  80 #define DPRINTFN(n, x)  do { if (ipw_debug >= (n)) printf x; } while (0)
  81 int ipw_debug = 0;
  82 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level");
  83 #else
  84 #define DPRINTF(x)
  85 #define DPRINTFN(n, x)
  86 #endif
  87
  88 MODULE_DEPEND(ipw, pci,  1, 1, 1);
  89 MODULE_DEPEND(ipw, wlan, 1, 1, 1);
  90
  91 struct ipw_ident {
  92         uint16_t        vendor;
  93         uint16_t        device;
  94         const char      *name;
  95 };
  96
  97 static const struct ipw_ident ipw_ident_table[] = {
  98         { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" },
  99
 100         { 0, 0, NULL }
 101 };
 102
 103 static int      ipw_dma_alloc(struct ipw_softc *);
 104 static void     ipw_release(struct ipw_softc *);
 105 static int      ipw_media_change(struct ifnet *);
 106 static void     ipw_media_status(struct ifnet *, struct ifmediareq *);
 107 static int      ipw_newstate(struct ieee80211com *, enum ieee80211_state, int);
 108 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t);
 109 static void     ipw_command_intr(struct ipw_softc *, struct ipw_soft_buf *);
 110 static void     ipw_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *);
 111 static void     ipw_data_intr(struct ipw_softc *, struct ipw_status *,
 112                     struct ipw_soft_bd *, struct ipw_soft_buf *);
 113 static void     ipw_rx_intr(struct ipw_softc *);
 114 static void     ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *);
 115 static void     ipw_tx_intr(struct ipw_softc *);
 116 static void     ipw_intr(void *);
 117 static void     ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int);
 118 static int      ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t);
 119 static int      ipw_tx_start(struct ifnet *, struct mbuf *,
 120                     struct ieee80211_node *);
 121 static void     ipw_start(struct ifnet *);
 122 static void     ipw_watchdog(struct ifnet *);
 123 static int      ipw_ioctl(struct ifnet *, u_long, caddr_t);
 124 static void     ipw_stop_master(struct ipw_softc *);
 125 static int      ipw_reset(struct ipw_softc *);
 126 static int      ipw_load_ucode(struct ipw_softc *, u_char *, int);
 127 static int      ipw_load_firmware(struct ipw_softc *, u_char *, int);
 128 static int      ipw_cache_firmware(struct ipw_softc *, void *);
 129 static void     ipw_free_firmware(struct ipw_softc *);
 130 static int      ipw_config(struct ipw_softc *);
 131 static void     ipw_init(void *);
 132 static void     ipw_stop(void *);
 133 static int      ipw_sysctl_stats(SYSCTL_HANDLER_ARGS);
 134 static int      ipw_sysctl_radio(SYSCTL_HANDLER_ARGS);
 135 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t);
 136 static void     ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t);
 137 static int      ipw_read_table2(struct ipw_softc *, uint32_t, void *,
 138                     uint32_t *);
 139 static void     ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *,
 140                     bus_size_t);
 141 static void     ipw_write_mem_1(struct ipw_softc *, bus_size_t, uint8_t *,
 142                     bus_size_t);
 143
 144 static int ipw_probe(device_t);
 145 static int ipw_attach(device_t);
 146 static int ipw_detach(device_t);
 147 static int ipw_shutdown(device_t);
 148 static int ipw_suspend(device_t);
 149 static int ipw_resume(device_t);
 150
 151 static device_method_t ipw_methods[] = {
 152         /* Device interface */
 153         DEVMETHOD(device_probe,         ipw_probe),
 154         DEVMETHOD(device_attach,        ipw_attach),
 155         DEVMETHOD(device_detach,        ipw_detach),
 156         DEVMETHOD(device_shutdown,      ipw_shutdown),
 157         DEVMETHOD(device_suspend,       ipw_suspend),
 158         DEVMETHOD(device_resume,        ipw_resume),
 159
 160         { 0, 0 }
 161 };
 162
 163 static driver_t ipw_driver = {
 164         "ipw",
 165         ipw_methods,
 166         sizeof (struct ipw_softc)
 167 };
 168
 169 static devclass_t ipw_devclass;
 170
 171 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, 0, 0);
 172
 173 /*
 174  * Supported rates for 802.11b mode (in 500Kbps unit).
 175  */
 176 static const struct ieee80211_rateset ipw_rateset_11b =
 177         { 4, { 2, 4, 11, 22 } };
 178
 179 static __inline uint8_t
 180 MEM_READ_1(struct ipw_softc *sc, uint32_t addr)
 181 {
 182         CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, addr);
 183         return CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA);
 184 }
 185
 186 static __inline uint32_t
 187 MEM_READ_4(struct ipw_softc *sc, uint32_t addr)
 188 {
 189         CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, addr);
 190         return CSR_READ_4(sc, IPW_CSR_INDIRECT_DATA);
 191 }
 192
 193 static int
 194 ipw_probe(device_t dev)
 195 {
 196         const struct ipw_ident *ident;
 197
 198         for (ident = ipw_ident_table; ident->name != NULL; ident++) {
 199                 if (pci_get_vendor(dev) == ident->vendor &&
 200                     pci_get_device(dev) == ident->device) {
 201                         device_set_desc(dev, ident->name);
 202                         return 0;
 203                 }
 204         }
 205         return ENXIO;
 206 }
 207
 208 /* Base Address Register */
 209 #define IPW_PCI_BAR0    0x10
 210
 211 static int
 212 ipw_attach(device_t dev)
 213 {
 214         struct ipw_softc *sc = device_get_softc(dev);
 215         struct ifnet *ifp;
 216         struct ieee80211com *ic = &sc->sc_ic;
 217         uint16_t val;
 218         int error, i;
 219
 220         sc->sc_dev = dev;
 221
 222         mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
 223             MTX_DEF);
 224
 225         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 226                 device_printf(dev, "chip is in D%d power mode "
 227                     "-- setting to D0\n", pci_get_powerstate(dev));
 228                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 229         }
 230
 231         pci_write_config(dev, 0x41, 0, 1);
 232
 233         /* enable bus-mastering */
 234         pci_enable_busmaster(dev);
 235
 236         sc->mem_rid = IPW_PCI_BAR0;
 237         sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
 238             RF_ACTIVE);
 239         if (sc->mem == NULL) {
 240                 device_printf(dev, "could not allocate memory resource\n");
 241                 goto fail;
 242         }
 243
 244         sc->sc_st = rman_get_bustag(sc->mem);
 245         sc->sc_sh = rman_get_bushandle(sc->mem);
 246
 247         sc->irq_rid = 0;
 248         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
 249             RF_ACTIVE | RF_SHAREABLE);
 250         if (sc->irq == NULL) {
 251                 device_printf(dev, "could not allocate interrupt resource\n");
 252                 goto fail;
 253         }
 254
 255         if (ipw_reset(sc) != 0) {
 256                 device_printf(dev, "could not reset adapter\n");
 257                 goto fail;
 258         }
 259
 260         if (ipw_dma_alloc(sc) != 0) {
 261                 device_printf(dev, "could not allocate DMA resources\n");
 262                 goto fail;
 263         }
 264
 265         ifp = sc->sc_ifp = if_alloc(IFT_ETHER);
 266         if (ifp == NULL) {
 267                 device_printf(dev, "can not if_alloc()\n");
 268                 goto fail;
 269         }
 270
 271         ifp->if_softc = sc;
 272         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 273         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 274         ifp->if_init = ipw_init;
 275         ifp->if_ioctl = ipw_ioctl;
 276         ifp->if_start = ipw_start;
 277         ifp->if_watchdog = ipw_watchdog;
 278         IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
 279         ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
 280         IFQ_SET_READY(&ifp->if_snd);
 281
 282         ic->ic_ifp = ifp;
 283         ic->ic_phytype = IEEE80211_T_DS;
 284         ic->ic_opmode = IEEE80211_M_STA;
 285         ic->ic_state = IEEE80211_S_INIT;
 286
 287         /* set device capabilities */
 288         ic->ic_caps = IEEE80211_C_SHPREAMBLE | IEEE80211_C_TXPMGT |
 289             IEEE80211_C_PMGT | IEEE80211_C_IBSS | IEEE80211_C_MONITOR;
 290
 291         /* read MAC address from EEPROM */
 292         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0);
 293         ic->ic_myaddr[0] = val >> 8;
 294         ic->ic_myaddr[1] = val & 0xff;
 295         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1);
 296         ic->ic_myaddr[2] = val >> 8;
 297         ic->ic_myaddr[3] = val & 0xff;
 298         val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2);
 299         ic->ic_myaddr[4] = val >> 8;
 300         ic->ic_myaddr[5] = val & 0xff;
 301
 302         /* set supported .11b rates */
 303         ic->ic_sup_rates[IEEE80211_MODE_11B] = ipw_rateset_11b;
 304
 305         /* set supported .11b channels (read from EEPROM) */
 306         if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0)
 307                 val = 0x7ff; /* default to channels 1-11 */
 308         val <<= 1;
 309         for (i = 1; i < 16; i++) {
 310                 if (val & (1 << i)) {
 311                         ic->ic_channels[i].ic_freq =
 312                             ieee80211_ieee2mhz(i, IEEE80211_CHAN_B);
 313                         ic->ic_channels[i].ic_flags = IEEE80211_CHAN_B;
 314                 }
 315         }
 316
 317         /* check support for radio transmitter switch in EEPROM */
 318         if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8))
 319                 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH;
 320
 321         ieee80211_ifattach(ic);
 322         /* override state transition machine */
 323         sc->sc_newstate = ic->ic_newstate;
 324         ic->ic_newstate = ipw_newstate;
 325         ieee80211_media_init(ic, ipw_media_change, ipw_media_status);
 326
 327         bpfattach2(ifp, DLT_IEEE802_11_RADIO,
 328             sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf);
 329
 330         sc->sc_rxtap_len = sizeof sc->sc_rxtapu;
 331         sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
 332         sc->sc_rxtap.wr_ihdr.it_present = htole32(IPW_RX_RADIOTAP_PRESENT);
 333
 334         sc->sc_txtap_len = sizeof sc->sc_txtapu;
 335         sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
 336         sc->sc_txtap.wt_ihdr.it_present = htole32(IPW_TX_RADIOTAP_PRESENT);
 337
 338         /*
 339          * Add a few sysctl knobs.
 340          */
 341         sc->dwelltime = 100;
 342
 343         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 344             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio",
 345             CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I",
 346             "radio transmitter switch state (0=off, 1=on)");
 347
 348         SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
 349             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
 350             CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S",
 351             "statistics");
 352
 353         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
 354             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "dwell",
 355             CTLFLAG_RW, &sc->dwelltime, 0,
 356             "channel dwell time (ms) for AP/station scanning");
 357
 358         /*
 359          * Hook our interrupt after all initialization is complete.
 360          */
 361         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
 362             ipw_intr, sc, &sc->sc_ih);
 363         if (error != 0) {
 364                 device_printf(dev, "could not set up interrupt\n");
 365                 goto fail;
 366         }
 367
 368         if (bootverbose)
 369                 ieee80211_announce(ic);
 370
 371         return 0;
 372
 373 fail:   ipw_detach(dev);
 374         return ENXIO;
 375 }
 376
 377 static int
 378 ipw_detach(device_t dev)
 379 {
 380         struct ipw_softc *sc = device_get_softc(dev);
 381         struct ieee80211com *ic = &sc->sc_ic;
 382         struct ifnet *ifp = ic->ic_ifp;
 383         IPW_LOCK_DECL;
 384
 385         IPW_LOCK(sc);
 386
 387         ipw_stop(sc);
 388         ipw_free_firmware(sc);
 389
 390         IPW_UNLOCK(sc);
 391
 392         if (ifp != NULL) {
 393                 bpfdetach(ifp);
 394                 ieee80211_ifdetach(ic);
 395         }
 396
 397         ipw_release(sc);
 398
 399         if (sc->irq != NULL) {
 400                 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
 401                 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
 402         }
 403
 404         if (sc->mem != NULL)
 405                 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
 406         if (ifp != NULL)
 407                 if_free(ifp);
 408
 409         mtx_destroy(&sc->sc_mtx);
 410
 411         return 0;
 412 }
 413
 414 static int
 415 ipw_dma_alloc(struct ipw_softc *sc)
 416 {
 417         struct ipw_soft_bd *sbd;
 418         struct ipw_soft_hdr *shdr;
 419         struct ipw_soft_buf *sbuf;
 420         bus_addr_t physaddr;
 421         int error, i;
 422
 423         /*
 424          * Allocate and map tx ring.
 425          */
 426         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 427             BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL,
 428             NULL, &sc->tbd_dmat);
 429         if (error != 0) {
 430                 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
 431                 goto fail;
 432         }
 433
 434         error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list,
 435             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map);
 436         if (error != 0) {
 437                 device_printf(sc->sc_dev,
 438                     "could not allocate tx ring DMA memory\n");
 439                 goto fail;
 440         }
 441
 442         error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list,
 443             IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0);
 444         if (error != 0) {
 445                 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n");
 446                 goto fail;
 447         }
 448
 449         /*
 450          * Allocate and map rx ring.
 451          */
 452         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 453             BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL,
 454             NULL, &sc->rbd_dmat);
 455         if (error != 0) {
 456                 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n");
 457                 goto fail;
 458         }
 459
 460         error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list,
 461             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map);
 462         if (error != 0) {
 463                 device_printf(sc->sc_dev,
 464                     "could not allocate rx ring DMA memory\n");
 465                 goto fail;
 466         }
 467
 468         error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list,
 469             IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0);
 470         if (error != 0) {
 471                 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n");
 472                 goto fail;
 473         }
 474
 475         /*
 476          * Allocate and map status ring.
 477          */
 478         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
 479             BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0,
 480             NULL, NULL, &sc->status_dmat);
 481         if (error != 0) {
 482                 device_printf(sc->sc_dev,
 483                     "could not create status ring DMA tag\n");
 484                 goto fail;
 485         }
 486
 487         error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list,
 488             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map);
 489         if (error != 0) {
 490                 device_printf(sc->sc_dev,
 491                     "could not allocate status ring DMA memory\n");
 492                 goto fail;
 493         }
 494
 495         error = bus_dmamap_load(sc->status_dmat, sc->status_map,
 496             sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys,
 497             0);
 498         if (error != 0) {
 499                 device_printf(sc->sc_dev,
 500                     "could not map status ring DMA memory\n");
 501                 goto fail;
 502         }
 503
 504         /*
 505          * Allocate command DMA map.
 506          */
 507         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 508             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1,
 509             sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat);
 510         if (error != 0) {
 511                 device_printf(sc->sc_dev, "could not create command DMA tag\n");
 512                 goto fail;
 513         }
 514
 515         error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map);
 516         if (error != 0) {
 517                 device_printf(sc->sc_dev,
 518                     "could not create command DMA map\n");
 519                 goto fail;
 520         }
 521
 522         /*
 523          * Allocate headers DMA maps.
 524          */
 525         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 526             BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1,
 527             sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat);
 528         if (error != 0) {
 529                 device_printf(sc->sc_dev, "could not create header DMA tag\n");
 530                 goto fail;
 531         }
 532
 533         SLIST_INIT(&sc->free_shdr);
 534         for (i = 0; i < IPW_NDATA; i++) {
 535                 shdr = &sc->shdr_list[i];
 536                 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map);
 537                 if (error != 0) {
 538                         device_printf(sc->sc_dev,
 539                             "could not create header DMA map\n");
 540                         goto fail;
 541                 }
 542                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
 543         }
 544
 545         /*
 546          * Allocate tx buffers DMA maps.
 547          */
 548         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 549             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0,
 550             NULL, NULL, &sc->txbuf_dmat);
 551         if (error != 0) {
 552                 device_printf(sc->sc_dev, "could not create tx DMA tag\n");
 553                 goto fail;
 554         }
 555
 556         SLIST_INIT(&sc->free_sbuf);
 557         for (i = 0; i < IPW_NDATA; i++) {
 558                 sbuf = &sc->tx_sbuf_list[i];
 559                 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map);
 560                 if (error != 0) {
 561                         device_printf(sc->sc_dev,
 562                             "could not create tx DMA map\n");
 563                         goto fail;
 564                 }
 565                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
 566         }
 567
 568         /*
 569          * Initialize tx ring.
 570          */
 571         for (i = 0; i < IPW_NTBD; i++) {
 572                 sbd = &sc->stbd_list[i];
 573                 sbd->bd = &sc->tbd_list[i];
 574                 sbd->type = IPW_SBD_TYPE_NOASSOC;
 575         }
 576
 577         /*
 578          * Pre-allocate rx buffers and DMA maps.
 579          */
 580         error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
 581             BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
 582             NULL, &sc->rxbuf_dmat);
 583         if (error != 0) {
 584                 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
 585                 goto fail;
 586         }
 587
 588         for (i = 0; i < IPW_NRBD; i++) {
 589                 sbd = &sc->srbd_list[i];
 590                 sbuf = &sc->rx_sbuf_list[i];
 591                 sbd->bd = &sc->rbd_list[i];
 592
 593                 sbuf->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
 594                 if (sbuf->m == NULL) {
 595                         device_printf(sc->sc_dev,
 596                             "could not allocate rx mbuf\n");
 597                         error = ENOMEM;
 598                         goto fail;
 599                 }
 600
 601                 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map);
 602                 if (error != 0) {
 603                         device_printf(sc->sc_dev,
 604                             "could not create rx DMA map\n");
 605                         goto fail;
 606                 }
 607
 608                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
 609                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
 610                     &physaddr, 0);
 611                 if (error != 0) {
 612                         device_printf(sc->sc_dev,
 613                             "could not map rx DMA memory\n");
 614                         goto fail;
 615                 }
 616
 617                 sbd->type = IPW_SBD_TYPE_DATA;
 618                 sbd->priv = sbuf;
 619                 sbd->bd->physaddr = htole32(physaddr);
 620                 sbd->bd->len = htole32(MCLBYTES);
 621         }
 622
 623         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
 624
 625         return 0;
 626
 627 fail:   ipw_release(sc);
 628         return error;
 629 }
 630
 631 static void
 632 ipw_release(struct ipw_softc *sc)
 633 {
 634         struct ipw_soft_buf *sbuf;
 635         int i;
 636
 637         if (sc->tbd_dmat != NULL) {
 638                 if (sc->stbd_list != NULL) {
 639                         bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map);
 640                         bus_dmamem_free(sc->tbd_dmat, sc->tbd_list,
 641                             sc->tbd_map);
 642                 }
 643                 bus_dma_tag_destroy(sc->tbd_dmat);
 644         }
 645
 646         if (sc->rbd_dmat != NULL) {
 647                 if (sc->rbd_list != NULL) {
 648                         bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map);
 649                         bus_dmamem_free(sc->rbd_dmat, sc->rbd_list,
 650                             sc->rbd_map);
 651                 }
 652                 bus_dma_tag_destroy(sc->rbd_dmat);
 653         }
 654
 655         if (sc->status_dmat != NULL) {
 656                 if (sc->status_list != NULL) {
 657                         bus_dmamap_unload(sc->status_dmat, sc->status_map);
 658                         bus_dmamem_free(sc->status_dmat, sc->status_list,
 659                             sc->status_map);
 660                 }
 661                 bus_dma_tag_destroy(sc->status_dmat);
 662         }
 663
 664         for (i = 0; i < IPW_NTBD; i++)
 665                 ipw_release_sbd(sc, &sc->stbd_list[i]);
 666
 667         if (sc->cmd_dmat != NULL) {
 668                 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map);
 669                 bus_dma_tag_destroy(sc->cmd_dmat);
 670         }
 671
 672         if (sc->hdr_dmat != NULL) {
 673                 for (i = 0; i < IPW_NDATA; i++)
 674                         bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map);
 675                 bus_dma_tag_destroy(sc->hdr_dmat);
 676         }
 677
 678         if (sc->txbuf_dmat != NULL) {
 679                 for (i = 0; i < IPW_NDATA; i++) {
 680                         bus_dmamap_destroy(sc->txbuf_dmat,
 681                             sc->tx_sbuf_list[i].map);
 682                 }
 683                 bus_dma_tag_destroy(sc->txbuf_dmat);
 684         }
 685
 686         if (sc->rxbuf_dmat != NULL) {
 687                 for (i = 0; i < IPW_NRBD; i++) {
 688                         sbuf = &sc->rx_sbuf_list[i];
 689                         if (sbuf->m != NULL) {
 690                                 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map,
 691                                     BUS_DMASYNC_POSTREAD);
 692                                 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
 693                                 m_freem(sbuf->m);
 694                         }
 695                         bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map);
 696                 }
 697                 bus_dma_tag_destroy(sc->rxbuf_dmat);
 698         }
 699 }
 700
 701 static int
 702 ipw_shutdown(device_t dev)
 703 {
 704         struct ipw_softc *sc = device_get_softc(dev);
 705
 706         ipw_stop(sc);
 707
 708         return 0;
 709 }
 710
 711 static int
 712 ipw_suspend(device_t dev)
 713 {
 714         struct ipw_softc *sc = device_get_softc(dev);
 715
 716         ipw_stop(sc);
 717
 718         return 0;
 719 }
 720
 721 static int
 722 ipw_resume(device_t dev)
 723 {
 724         struct ipw_softc *sc = device_get_softc(dev);
 725         struct ifnet *ifp = sc->sc_ic.ic_ifp;
 726         IPW_LOCK_DECL;
 727
 728         IPW_LOCK(sc);
 729
 730         pci_write_config(dev, 0x41, 0, 1);
 731
 732         if (ifp->if_flags & IFF_UP) {
 733                 ifp->if_init(ifp->if_softc);
 734                 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 735                         ifp->if_start(ifp);
 736         }
 737
 738         IPW_UNLOCK(sc);
 739
 740         return 0;
 741 }
 742
 743 static int
 744 ipw_media_change(struct ifnet *ifp)
 745 {
 746         struct ipw_softc *sc = ifp->if_softc;
 747         int error;
 748         IPW_LOCK_DECL;
 749
 750         IPW_LOCK(sc);
 751
 752         error = ieee80211_media_change(ifp);
 753         if (error != ENETRESET) {
 754                 IPW_UNLOCK(sc);
 755                 return error;
 756         }
 757
 758         if ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING))
 759                 ipw_init(sc);
 760
 761         IPW_UNLOCK(sc);
 762
 763         return 0;
 764 }
 765
 766 /*
 767  * The firmware automaticly adapt the transmit speed. We report the current
 768  * transmit speed here.
 769  */
 770 static void
 771 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr)
 772 {
 773 #define N(a)    (sizeof (a) / sizeof (a[0]))
 774         struct ipw_softc *sc = ifp->if_softc;
 775         struct ieee80211com *ic = &sc->sc_ic;
 776         static const struct {
 777                 uint32_t        val;
 778                 int             rate;
 779         } rates[] = {
 780                 { IPW_RATE_DS1,   2 },
 781                 { IPW_RATE_DS2,   4 },
 782                 { IPW_RATE_DS5,  11 },
 783                 { IPW_RATE_DS11, 22 },
 784         };
 785         uint32_t val;
 786         int rate, i;
 787
 788         imr->ifm_status = IFM_AVALID;
 789         imr->ifm_active = IFM_IEEE80211;
 790         if (ic->ic_state == IEEE80211_S_RUN)
 791                 imr->ifm_status |= IFM_ACTIVE;
 792
 793         /* read current transmission rate from adapter */
 794         val = ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf;
 795
 796         /* convert ipw rate to 802.11 rate */
 797         for (i = 0; i < N(rates) && rates[i].val != val; i++);
 798         rate = (i < N(rates)) ? rates[i].rate : 0;
 799
 800         imr->ifm_active |= IFM_IEEE80211_11B;
 801         imr->ifm_active |= ieee80211_rate2media(ic, rate, IEEE80211_MODE_11B);
 802         switch (ic->ic_opmode) {
 803         case IEEE80211_M_STA:
 804                 break;
 805
 806         case IEEE80211_M_IBSS:
 807                 imr->ifm_active |= IFM_IEEE80211_IBSS;
 808                 break;
 809
 810         case IEEE80211_M_MONITOR:
 811                 imr->ifm_active |= IFM_IEEE80211_MONITOR;
 812                 break;
 813
 814         case IEEE80211_M_AHDEMO:
 815         case IEEE80211_M_HOSTAP:
 816                 /* should not get there */
 817                 break;
 818         }
 819 #undef N
 820 }
 821
 822 static int
 823 ipw_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
 824 {
 825         struct ifnet *ifp = ic->ic_ifp;
 826         struct ipw_softc *sc = ifp->if_softc;
 827         struct ieee80211_node *ni;
 828         uint8_t macaddr[IEEE80211_ADDR_LEN];
 829         uint32_t len;
 830
 831         switch (nstate) {
 832         case IEEE80211_S_RUN:
 833                 DELAY(200); /* firmware needs a short delay here */
 834
 835                 len = IEEE80211_ADDR_LEN;
 836                 ipw_read_table2(sc, IPW_INFO_CURRENT_BSSID, macaddr, &len);
 837
 838                 ni = ieee80211_find_node(&ic->ic_scan, macaddr);
 839                 if (ni == NULL)
 840                         break;
 841
 842                 ieee80211_ref_node(ni);
 843                 ieee80211_sta_join(ic, ni);
 844                 ieee80211_node_authorize(ni);
 845
 846                 if (ic->ic_opmode == IEEE80211_M_STA)
 847                         ieee80211_notify_node_join(ic, ni, 1);
 848                 break;
 849
 850         case IEEE80211_S_INIT:
 851         case IEEE80211_S_SCAN:
 852         case IEEE80211_S_AUTH:
 853         case IEEE80211_S_ASSOC:
 854                 break;
 855         }
 856
 857         ic->ic_state = nstate;
 858         return 0;
 859 }
 860
 861 /*
 862  * Read 16 bits at address 'addr' from the serial EEPROM.
 863  */
 864 static uint16_t
 865 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr)
 866 {
 867         uint32_t tmp;
 868         uint16_t val;
 869         int n;
 870
 871         /* clock C once before the first command */
 872         IPW_EEPROM_CTL(sc, 0);
 873         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 874         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 875         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 876
 877         /* write start bit (1) */
 878         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 879         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 880
 881         /* write READ opcode (10) */
 882         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
 883         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
 884         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 885         IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 886
 887         /* write address A7-A0 */
 888         for (n = 7; n >= 0; n--) {
 889                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 890                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D));
 891                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
 892                     (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C);
 893         }
 894
 895         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 896
 897         /* read data Q15-Q0 */
 898         val = 0;
 899         for (n = 15; n >= 0; n--) {
 900                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
 901                 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 902                 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL);
 903                 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n;
 904         }
 905
 906         IPW_EEPROM_CTL(sc, 0);
 907
 908         /* clear Chip Select and clock C */
 909         IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
 910         IPW_EEPROM_CTL(sc, 0);
 911         IPW_EEPROM_CTL(sc, IPW_EEPROM_C);
 912
 913         return le16toh(val);
 914 }
 915
 916 static void
 917 ipw_command_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
 918 {
 919         struct ipw_cmd *cmd;
 920
 921         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
 922
 923         cmd = mtod(sbuf->m, struct ipw_cmd *);
 924
 925         DPRINTFN(2, ("cmd ack'ed (%u, %u, %u, %u, %u)\n", le32toh(cmd->type),
 926             le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len),
 927             le32toh(cmd->status)));
 928
 929         wakeup(sc);
 930 }
 931
 932 static void
 933 ipw_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
 934 {
 935         struct ieee80211com *ic = &sc->sc_ic;
 936         uint32_t state;
 937
 938         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
 939
 940         state = le32toh(*mtod(sbuf->m, uint32_t *));
 941
 942         DPRINTFN(2, ("entering state %u\n", state));
 943
 944         switch (state) {
 945         case IPW_STATE_ASSOCIATED:
 946                 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
 947                 break;
 948
 949         case IPW_STATE_SCANNING:
 950                 /* don't leave run state on background scan */
 951                 if (ic->ic_state != IEEE80211_S_RUN)
 952                         ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
 953
 954                 ic->ic_flags |= IEEE80211_F_SCAN;
 955                 break;
 956
 957         case IPW_STATE_SCAN_COMPLETE:
 958                 ieee80211_notify_scan_done(ic);
 959                 ic->ic_flags &= ~IEEE80211_F_SCAN;
 960                 break;
 961
 962         case IPW_STATE_ASSOCIATION_LOST:
 963                 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
 964                 break;
 965
 966         case IPW_STATE_RADIO_DISABLED:
 967                 ic->ic_ifp->if_flags &= ~IFF_UP;
 968                 ipw_stop(sc);
 969                 break;
 970         }
 971 }
 972
 973 /*
 974  * XXX: Hack to set the current channel to the value advertised in beacons or
 975  * probe responses. Only used during AP detection.
 976  */
 977 static void
 978 ipw_fix_channel(struct ieee80211com *ic, struct mbuf *m)
 979 {
 980         struct ieee80211_frame *wh;
 981         uint8_t subtype;
 982         uint8_t *frm, *efrm;
 983
 984         wh = mtod(m, struct ieee80211_frame *);
 985
 986         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
 987                 return;
 988
 989         subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
 990
 991         if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
 992             subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
 993                 return;
 994
 995         frm = (uint8_t *)(wh + 1);
 996         efrm = mtod(m, uint8_t *) + m->m_len;
 997
 998         frm += 12;      /* skip tstamp, bintval and capinfo fields */
 999         while (frm < efrm) {
1000                 if (*frm == IEEE80211_ELEMID_DSPARMS)
1001 #if IEEE80211_CHAN_MAX < 255
1002                 if (frm[2] <= IEEE80211_CHAN_MAX)
1003 #endif
1004                         ic->ic_curchan = &ic->ic_channels[frm[2]];
1005
1006                 frm += frm[1] + 2;
1007         }
1008 }
1009
1010 static void
1011 ipw_data_intr(struct ipw_softc *sc, struct ipw_status *status,
1012     struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf)
1013 {
1014         struct ieee80211com *ic = &sc->sc_ic;
1015         struct ifnet *ifp = ic->ic_ifp;
1016         struct mbuf *mnew, *m;
1017         struct ieee80211_frame *wh;
1018         struct ieee80211_node *ni;
1019         bus_addr_t physaddr;
1020         int error;
1021
1022         DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len),
1023             status->rssi));
1024
1025         if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) ||
1026             le32toh(status->len) > MCLBYTES)
1027                 return;
1028
1029         /*
1030          * Try to allocate a new mbuf for this ring element and load it before
1031          * processing the current mbuf. If the ring element cannot be loaded,
1032          * drop the received packet and reuse the old mbuf. In the unlikely
1033          * case that the old mbuf can't be reloaded either, explicitly panic.
1034          */
1035         mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1036         if (mnew == NULL) {
1037                 ifp->if_ierrors++;
1038                 return;
1039         }
1040
1041         bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1042         bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
1043
1044         error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *),
1045             MCLBYTES, ipw_dma_map_addr, &physaddr, 0);
1046         if (error != 0) {
1047                 m_freem(mnew);
1048
1049                 /* try to reload the old mbuf */
1050                 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
1051                     mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
1052                     &physaddr, 0);
1053                 if (error != 0) {
1054                         /* very unlikely that it will fail... */
1055                         panic("%s: could not load old rx mbuf",
1056                             device_get_name(sc->sc_dev));
1057                 }
1058                 ifp->if_ierrors++;
1059                 return;
1060         }
1061
1062         /*
1063          * New mbuf successfully loaded, update Rx ring and continue
1064          * processing.
1065          */
1066         m = sbuf->m;
1067         sbuf->m = mnew;
1068         sbd->bd->physaddr = htole32(physaddr);
1069
1070         /* finalize mbuf */
1071         m->m_pkthdr.rcvif = ifp;
1072         m->m_pkthdr.len = m->m_len = le32toh(status->len);
1073
1074         if (bpf_peers_present(sc->sc_drvbpf)) {
1075                 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap;
1076
1077                 tap->wr_flags = 0;
1078                 tap->wr_antsignal = status->rssi;
1079                 tap->wr_chan_freq = htole16(ic->ic_ibss_chan->ic_freq);
1080                 tap->wr_chan_flags = htole16(ic->ic_ibss_chan->ic_flags);
1081
1082                 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m);
1083         }
1084
1085         if (ic->ic_state == IEEE80211_S_SCAN)
1086                 ipw_fix_channel(ic, m);
1087
1088         wh = mtod(m, struct ieee80211_frame *);
1089         mtx_unlock(&sc->sc_mtx);
1090         ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh);
1091
1092         /* send the frame to the 802.11 layer */
1093         ieee80211_input(ic, m, ni, status->rssi, 0);
1094
1095         /* node is no longer needed */
1096         ieee80211_free_node(ni);
1097         mtx_lock(&sc->sc_mtx);
1098
1099         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1100 }
1101
1102 static void
1103 ipw_rx_intr(struct ipw_softc *sc)
1104 {
1105         struct ipw_status *status;
1106         struct ipw_soft_bd *sbd;
1107         struct ipw_soft_buf *sbuf;
1108         uint32_t r, i;
1109
1110         if (!(sc->flags & IPW_FLAG_FW_INITED))
1111                 return;
1112
1113         r = CSR_READ_4(sc, IPW_CSR_RX_READ);
1114
1115         bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD);
1116
1117         for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) {
1118                 status = &sc->status_list[i];
1119                 sbd = &sc->srbd_list[i];
1120                 sbuf = sbd->priv;
1121
1122                 switch (le16toh(status->code) & 0xf) {
1123                 case IPW_STATUS_CODE_COMMAND:
1124                         ipw_command_intr(sc, sbuf);
1125                         break;
1126
1127                 case IPW_STATUS_CODE_NEWSTATE:
1128                         ipw_newstate_intr(sc, sbuf);
1129                         break;
1130
1131                 case IPW_STATUS_CODE_DATA_802_3:
1132                 case IPW_STATUS_CODE_DATA_802_11:
1133                         ipw_data_intr(sc, status, sbd, sbuf);
1134                         break;
1135
1136                 case IPW_STATUS_CODE_NOTIFICATION:
1137                         DPRINTFN(2, ("received notification\n"));
1138                         break;
1139
1140                 default:
1141                         device_printf(sc->sc_dev, "unknown status code %u\n",
1142                             le16toh(status->code));
1143                 }
1144
1145                 /* firmware was killed, stop processing received frames */
1146                 if (!(sc->flags & IPW_FLAG_FW_INITED))
1147                         return;
1148
1149                 sbd->bd->flags = 0;
1150         }
1151
1152         bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1153
1154         /* kick the firmware */
1155         sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1;
1156         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
1157 }
1158
1159 static void
1160 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd)
1161 {
1162         struct ipw_soft_hdr *shdr;
1163         struct ipw_soft_buf *sbuf;
1164
1165         switch (sbd->type) {
1166         case IPW_SBD_TYPE_COMMAND:
1167                 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map,
1168                     BUS_DMASYNC_POSTWRITE);
1169                 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map);
1170                 break;
1171
1172         case IPW_SBD_TYPE_HEADER:
1173                 shdr = sbd->priv;
1174                 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE);
1175                 bus_dmamap_unload(sc->hdr_dmat, shdr->map);
1176                 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
1177                 break;
1178
1179         case IPW_SBD_TYPE_DATA:
1180                 sbuf = sbd->priv;
1181                 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map,
1182                     BUS_DMASYNC_POSTWRITE);
1183                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1184                 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
1185
1186                 m_freem(sbuf->m);
1187                 ieee80211_free_node(sbuf->ni);
1188
1189                 sc->sc_tx_timer = 0;
1190                 break;
1191         }
1192
1193         sbd->type = IPW_SBD_TYPE_NOASSOC;
1194 }
1195
1196 static void
1197 ipw_tx_intr(struct ipw_softc *sc)
1198 {
1199         struct ifnet *ifp = sc->sc_ic.ic_ifp;
1200         struct ipw_soft_bd *sbd;
1201         uint32_t r, i;
1202
1203         if (!(sc->flags & IPW_FLAG_FW_INITED))
1204                 return;
1205
1206         r = CSR_READ_4(sc, IPW_CSR_TX_READ);
1207
1208         for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) {
1209                 sbd = &sc->stbd_list[i];
1210
1211                 if (sbd->type == IPW_SBD_TYPE_DATA)
1212                         ifp->if_opackets++;
1213
1214                 ipw_release_sbd(sc, sbd);
1215                 sc->txfree++;
1216         }
1217
1218         /* remember what the firmware has processed */
1219         sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1;
1220
1221         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1222         ipw_start(ifp);
1223 }
1224
1225 static void
1226 ipw_intr(void *arg)
1227 {
1228         struct ipw_softc *sc = arg;
1229         uint32_t r;
1230         IPW_LOCK_DECL;
1231
1232         IPW_LOCK(sc);
1233
1234         if ((r = CSR_READ_4(sc, IPW_CSR_INTR)) == 0 || r == 0xffffffff) {
1235                 IPW_UNLOCK(sc);
1236                 return;
1237         }
1238
1239         /* disable interrupts */
1240         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1241
1242         if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) {
1243                 device_printf(sc->sc_dev, "fatal error\n");
1244                 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP;
1245                 ipw_stop(sc);
1246         }
1247
1248         if (r & IPW_INTR_FW_INIT_DONE) {
1249                 if (!(r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)))
1250                         wakeup(sc);
1251         }
1252
1253         if (r & IPW_INTR_RX_TRANSFER)
1254                 ipw_rx_intr(sc);
1255
1256         if (r & IPW_INTR_TX_TRANSFER)
1257                 ipw_tx_intr(sc);
1258
1259         /* acknowledge all interrupts */
1260         CSR_WRITE_4(sc, IPW_CSR_INTR, r);
1261
1262         /* re-enable interrupts */
1263         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1264
1265         IPW_UNLOCK(sc);
1266 }
1267
1268 static void
1269 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1270 {
1271         if (error != 0)
1272                 return;
1273
1274         KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1275
1276         *(bus_addr_t *)arg = segs[0].ds_addr;
1277 }
1278
1279 /*
1280  * Send a command to the firmware and wait for the acknowledgement.
1281  */
1282 static int
1283 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len)
1284 {
1285         struct ipw_soft_bd *sbd;
1286         bus_addr_t physaddr;
1287         int error;
1288
1289         sbd = &sc->stbd_list[sc->txcur];
1290
1291         error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd,
1292             sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0);
1293         if (error != 0) {
1294                 device_printf(sc->sc_dev, "could not map command DMA memory\n");
1295                 return error;
1296         }
1297
1298         sc->cmd.type = htole32(type);
1299         sc->cmd.subtype = 0;
1300         sc->cmd.len = htole32(len);
1301         sc->cmd.seq = 0;
1302         memcpy(sc->cmd.data, data, len);
1303
1304         sbd->type = IPW_SBD_TYPE_COMMAND;
1305         sbd->bd->physaddr = htole32(physaddr);
1306         sbd->bd->len = htole32(sizeof (struct ipw_cmd));
1307         sbd->bd->nfrag = 1;
1308         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND |
1309             IPW_BD_FLAG_TX_LAST_FRAGMENT;
1310
1311         bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE);
1312         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1313
1314         DPRINTFN(2, ("sending command (%u, %u, %u, %u)\n", type, 0, 0, len));
1315
1316         /* kick firmware */
1317         sc->txfree--;
1318         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1319         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1320
1321         /* wait at most one second for command to complete */
1322         return msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz);
1323 }
1324
1325 static int
1326 ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni)
1327 {
1328         struct ipw_softc *sc = ifp->if_softc;
1329         struct ieee80211com *ic = &sc->sc_ic;
1330         struct ieee80211_frame *wh;
1331         struct ipw_soft_bd *sbd;
1332         struct ipw_soft_hdr *shdr;
1333         struct ipw_soft_buf *sbuf;
1334         struct ieee80211_key *k;
1335         struct mbuf *mnew;
1336         bus_dma_segment_t segs[IPW_MAX_NSEG];
1337         bus_addr_t physaddr;
1338         int nsegs, error, i;
1339
1340         wh = mtod(m0, struct ieee80211_frame *);
1341
1342         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1343                 k = ieee80211_crypto_encap(ic, ni, m0);
1344                 if (k == NULL) {
1345                         m_freem(m0);
1346                         return ENOBUFS;
1347                 }
1348
1349                 /* packet header may have moved, reset our local pointer */
1350                 wh = mtod(m0, struct ieee80211_frame *);
1351         }
1352
1353         if (bpf_peers_present(sc->sc_drvbpf)) {
1354                 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap;
1355
1356                 tap->wt_flags = 0;
1357                 tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq);
1358                 tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags);
1359
1360                 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1361         }
1362
1363         shdr = SLIST_FIRST(&sc->free_shdr);
1364         sbuf = SLIST_FIRST(&sc->free_sbuf);
1365         KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool"));
1366
1367         shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND);
1368         shdr->hdr.subtype = 0;
1369         shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_WEP) ? 1 : 0;
1370         shdr->hdr.encrypt = 0;
1371         shdr->hdr.keyidx = 0;
1372         shdr->hdr.keysz = 0;
1373         shdr->hdr.fragmentsz = 0;
1374         IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2);
1375         if (ic->ic_opmode == IEEE80211_M_STA)
1376                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3);
1377         else
1378                 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1);
1379
1380         /* trim IEEE802.11 header */
1381         m_adj(m0, sizeof (struct ieee80211_frame));
1382
1383         error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs,
1384             &nsegs, 0);
1385         if (error != 0 && error != EFBIG) {
1386                 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1387                     error);
1388                 m_freem(m0);
1389                 return error;
1390         }
1391         if (error != 0) {
1392                 mnew = m_defrag(m0, M_DONTWAIT);
1393                 if (mnew == NULL) {
1394                         device_printf(sc->sc_dev,
1395                             "could not defragment mbuf\n");
1396                         m_freem(m0);
1397                         return ENOBUFS;
1398                 }
1399                 m0 = mnew;
1400
1401                 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0,
1402                     segs, &nsegs, 0);
1403                 if (error != 0) {
1404                         device_printf(sc->sc_dev,
1405                             "could not map mbuf (error %d)\n", error);
1406                         m_freem(m0);
1407                         return error;
1408                 }
1409         }
1410
1411         error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr,
1412             sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0);
1413         if (error != 0) {
1414                 device_printf(sc->sc_dev, "could not map header DMA memory\n");
1415                 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1416                 m_freem(m0);
1417                 return error;
1418         }
1419
1420         SLIST_REMOVE_HEAD(&sc->free_sbuf, next);
1421         SLIST_REMOVE_HEAD(&sc->free_shdr, next);
1422
1423         sbd = &sc->stbd_list[sc->txcur];
1424         sbd->type = IPW_SBD_TYPE_HEADER;
1425         sbd->priv = shdr;
1426         sbd->bd->physaddr = htole32(physaddr);
1427         sbd->bd->len = htole32(sizeof (struct ipw_hdr));
1428         sbd->bd->nfrag = 1 + nsegs;
1429         sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 |
1430             IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1431
1432         DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n",
1433             shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted,
1434             shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr,
1435             ":"));
1436
1437         sc->txfree--;
1438         sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1439
1440         sbuf->m = m0;
1441         sbuf->ni = ni;
1442
1443         for (i = 0; i < nsegs; i++) {
1444                 sbd = &sc->stbd_list[sc->txcur];
1445
1446                 sbd->bd->physaddr = htole32(segs[i].ds_addr);
1447                 sbd->bd->len = htole32(segs[i].ds_len);
1448                 sbd->bd->nfrag = 0;
1449                 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3;
1450                 if (i == nsegs - 1) {
1451                         sbd->type = IPW_SBD_TYPE_DATA;
1452                         sbd->priv = sbuf;
1453                         sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT;
1454                 } else {
1455                         sbd->type = IPW_SBD_TYPE_NOASSOC;
1456                         sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1457                 }
1458
1459                 DPRINTFN(5, ("sending fragment (%d, %d)\n", i, segs[i].ds_len));
1460
1461                 sc->txfree--;
1462                 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1463         }
1464
1465         bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE);
1466         bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE);
1467         bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1468
1469         /* kick firmware */
1470         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1471
1472         return 0;
1473 }
1474
1475 static void
1476 ipw_start(struct ifnet *ifp)
1477 {
1478         struct ipw_softc *sc = ifp->if_softc;
1479         struct ieee80211com *ic = &sc->sc_ic;
1480         struct mbuf *m0;
1481         struct ether_header *eh;
1482         struct ieee80211_node *ni;
1483         IPW_LOCK_DECL;
1484
1485         IPW_LOCK(sc);
1486
1487         if (ic->ic_state != IEEE80211_S_RUN) {
1488                 IPW_UNLOCK(sc);
1489                 return;
1490         }
1491
1492         for (;;) {
1493                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m0);
1494                 if (m0 == NULL)
1495                         break;
1496
1497                 if (sc->txfree < 1 + IPW_MAX_NSEG) {
1498                         IFQ_DRV_PREPEND(&ifp->if_snd, m0);
1499                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1500                         break;
1501                 }
1502
1503                 if (m0->m_len < sizeof (struct ether_header) &&
1504                     (m0 = m_pullup(m0, sizeof (struct ether_header))) == NULL)
1505                         continue;
1506
1507                 eh = mtod(m0, struct ether_header *);
1508                 ni = ieee80211_find_txnode(ic, eh->ether_dhost);
1509                 if (ni == NULL) {
1510                         m_freem(m0);
1511                         continue;
1512                 }
1513                 BPF_MTAP(ifp, m0);
1514
1515                 m0 = ieee80211_encap(ic, m0, ni);
1516                 if (m0 == NULL) {
1517                         ieee80211_free_node(ni);
1518                         continue;
1519                 }
1520
1521                 if (bpf_peers_present(ic->ic_rawbpf))
1522                         bpf_mtap(ic->ic_rawbpf, m0);
1523
1524                 if (ipw_tx_start(ifp, m0, ni) != 0) {
1525                         ieee80211_free_node(ni);
1526                         ifp->if_oerrors++;
1527                         break;
1528                 }
1529
1530                 /* start watchdog timer */
1531                 sc->sc_tx_timer = 5;
1532                 ifp->if_timer = 1;
1533         }
1534
1535         IPW_UNLOCK(sc);
1536 }
1537
1538 static void
1539 ipw_watchdog(struct ifnet *ifp)
1540 {
1541         struct ipw_softc *sc = ifp->if_softc;
1542         struct ieee80211com *ic = &sc->sc_ic;
1543
1544         ifp->if_timer = 0;
1545
1546         if (sc->sc_tx_timer > 0) {
1547                 if (--sc->sc_tx_timer == 0) {
1548                         if_printf(ifp, "device timeout\n");
1549                         ifp->if_oerrors++;
1550                         ifp->if_flags &= ~IFF_UP;
1551                         ipw_stop(sc);
1552                         return;
1553                 }
1554                 ifp->if_timer = 1;
1555         }
1556
1557         ieee80211_watchdog(ic);
1558 }
1559
1560 static int
1561 ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1562 {
1563         struct ipw_softc *sc = ifp->if_softc;
1564         struct ieee80211com *ic = &sc->sc_ic;
1565         struct ifreq *ifr;
1566         int error = 0;
1567         IPW_LOCK_DECL;
1568
1569         IPW_LOCK(sc);
1570
1571         switch (cmd) {
1572         case SIOCSIFFLAGS:
1573                 if (ifp->if_flags & IFF_UP) {
1574                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
1575                                 ipw_init(sc);
1576                 } else {
1577                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1578                                 ipw_stop(sc);
1579                 }
1580                 break;
1581
1582         case SIOCSLOADFW:
1583                 /* only super-user can do that! */
1584                 if ((error = suser(curthread)) != 0)
1585                         break;
1586
1587                 ifr = (struct ifreq *)data;
1588                 error = ipw_cache_firmware(sc, ifr->ifr_data);
1589                 break;
1590
1591         case SIOCSKILLFW:
1592                 /* only super-user can do that! */
1593                 if ((error = suser(curthread)) != 0)
1594                         break;
1595
1596                 ifp->if_flags &= ~IFF_UP;
1597                 ipw_stop(sc);
1598                 ipw_free_firmware(sc);
1599                 break;
1600
1601         default:
1602                 error = ieee80211_ioctl(ic, cmd, data);
1603         }
1604
1605         if (error == ENETRESET) {
1606                 if ((ifp->if_flags & IFF_UP) &&
1607                     (ifp->if_drv_flags & IFF_DRV_RUNNING))
1608                         ipw_init(sc);
1609                 error = 0;
1610         }
1611
1612         IPW_UNLOCK(sc);
1613
1614         return error;
1615 }
1616
1617 static void
1618 ipw_stop_master(struct ipw_softc *sc)
1619 {
1620         int ntries;
1621
1622         /* disable interrupts */
1623         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1624
1625         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER);
1626         for (ntries = 0; ntries < 50; ntries++) {
1627                 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED)
1628                         break;
1629                 DELAY(10);
1630         }
1631         if (ntries == 50)
1632                 device_printf(sc->sc_dev, "timeout waiting for master\n");
1633
1634         CSR_WRITE_4(sc, IPW_CSR_RST, CSR_READ_4(sc, IPW_CSR_RST) |
1635             IPW_RST_PRINCETON_RESET);
1636
1637         sc->flags &= ~IPW_FLAG_FW_INITED;
1638 }
1639
1640 static int
1641 ipw_reset(struct ipw_softc *sc)
1642 {
1643         int ntries;
1644
1645         ipw_stop_master(sc);
1646
1647         /* move adapter to D0 state */
1648         CSR_WRITE_4(sc, IPW_CSR_CTL, CSR_READ_4(sc, IPW_CSR_CTL) |
1649             IPW_CTL_INIT);
1650
1651         /* wait for clock stabilization */
1652         for (ntries = 0; ntries < 1000; ntries++) {
1653                 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY)
1654                         break;
1655                 DELAY(200);
1656         }
1657         if (ntries == 1000)
1658                 return EIO;
1659
1660         CSR_WRITE_4(sc, IPW_CSR_RST, CSR_READ_4(sc, IPW_CSR_RST) |
1661             IPW_RST_SW_RESET);
1662
1663         DELAY(10);
1664
1665         CSR_WRITE_4(sc, IPW_CSR_CTL, CSR_READ_4(sc, IPW_CSR_CTL) |
1666             IPW_CTL_INIT);
1667
1668         return 0;
1669 }
1670
1671 /*
1672  * Upload the microcode to the device.
1673  */
1674 static int
1675 ipw_load_ucode(struct ipw_softc *sc, u_char *uc, int size)
1676 {
1677         int ntries;
1678
1679         MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
1680         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1681
1682         MEM_WRITE_2(sc, 0x220000, 0x0703);
1683         MEM_WRITE_2(sc, 0x220000, 0x0707);
1684
1685         MEM_WRITE_1(sc, 0x210014, 0x72);
1686         MEM_WRITE_1(sc, 0x210014, 0x72);
1687
1688         MEM_WRITE_1(sc, 0x210000, 0x40);
1689         MEM_WRITE_1(sc, 0x210000, 0x00);
1690         MEM_WRITE_1(sc, 0x210000, 0x40);
1691
1692         MEM_WRITE_MULTI_1(sc, 0x210010, uc, size);
1693
1694         MEM_WRITE_1(sc, 0x210000, 0x00);
1695         MEM_WRITE_1(sc, 0x210000, 0x00);
1696         MEM_WRITE_1(sc, 0x210000, 0x80);
1697
1698         MEM_WRITE_2(sc, 0x220000, 0x0703);
1699         MEM_WRITE_2(sc, 0x220000, 0x0707);
1700
1701         MEM_WRITE_1(sc, 0x210014, 0x72);
1702         MEM_WRITE_1(sc, 0x210014, 0x72);
1703
1704         MEM_WRITE_1(sc, 0x210000, 0x00);
1705         MEM_WRITE_1(sc, 0x210000, 0x80);
1706
1707         for (ntries = 0; ntries < 10; ntries++) {
1708                 if (MEM_READ_1(sc, 0x210000) & 1)
1709                         break;
1710                 DELAY(10);
1711         }
1712         if (ntries == 10) {
1713                 device_printf(sc->sc_dev,
1714                     "timeout waiting for ucode to initialize\n");
1715                 return EIO;
1716         }
1717
1718         MEM_WRITE_4(sc, 0x3000e0, 0);
1719
1720         return 0;
1721 }
1722
1723 /* set of macros to handle unaligned little endian data in firmware image */
1724 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
1725 #define GETLE16(p) ((p)[0] | (p)[1] << 8)
1726 static int
1727 ipw_load_firmware(struct ipw_softc *sc, u_char *fw, int size)
1728 {
1729         u_char *p, *end;
1730         uint32_t dst;
1731         uint16_t len;
1732         int error;
1733
1734         p = fw;
1735         end = fw + size;
1736         while (p < end) {
1737                 dst = GETLE32(p); p += 4;
1738                 len = GETLE16(p); p += 2;
1739
1740                 ipw_write_mem_1(sc, dst, p, len);
1741                 p += len;
1742         }
1743
1744         CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK |
1745             IPW_IO_LED_OFF);
1746
1747         /* enable interrupts */
1748         CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1749
1750         /* kick the firmware */
1751         CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1752
1753         CSR_WRITE_4(sc, IPW_CSR_CTL, CSR_READ_4(sc, IPW_CSR_CTL) |
1754             IPW_CTL_ALLOW_STANDBY);
1755
1756         /* wait at most one second for firmware initialization to complete */
1757         if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) {
1758                 device_printf(sc->sc_dev, "timeout waiting for firmware "
1759                     "initialization to complete\n");
1760                 return error;
1761         }
1762
1763         CSR_WRITE_4(sc, IPW_CSR_IO, CSR_READ_4(sc, IPW_CSR_IO) |
1764             IPW_IO_GPIO1_MASK | IPW_IO_GPIO3_MASK);
1765
1766         return 0;
1767 }
1768
1769 /*
1770  * Store firmware into kernel memory so we can download it when we need to,
1771  * e.g when the adapter wakes up from suspend mode.
1772  */
1773 static int
1774 ipw_cache_firmware(struct ipw_softc *sc, void *data)
1775 {
1776         struct ipw_firmware *fw = &sc->fw;
1777         struct ipw_firmware_hdr hdr;
1778         u_char *p = data;
1779         int error;
1780         IPW_LOCK_DECL;
1781
1782         ipw_free_firmware(sc);
1783
1784         IPW_UNLOCK(sc);
1785
1786         if ((error = copyin(data, &hdr, sizeof hdr)) != 0)
1787                 goto fail1;
1788
1789         fw->main_size  = le32toh(hdr.main_size);
1790         fw->ucode_size = le32toh(hdr.ucode_size);
1791         p += sizeof hdr;
1792
1793         fw->main = malloc(fw->main_size, M_DEVBUF, M_NOWAIT);
1794         if (fw->main == NULL) {
1795                 error = ENOMEM;
1796                 goto fail1;
1797         }
1798
1799         fw->ucode = malloc(fw->ucode_size, M_DEVBUF, M_NOWAIT);
1800         if (fw->ucode == NULL) {
1801                 error = ENOMEM;
1802                 goto fail2;
1803         }
1804
1805         if ((error = copyin(p, fw->main, fw->main_size)) != 0)
1806                 goto fail3;
1807
1808         p += fw->main_size;
1809         if ((error = copyin(p, fw->ucode, fw->ucode_size)) != 0)
1810                 goto fail3;
1811
1812         DPRINTF(("Firmware cached: main %u, ucode %u\n", fw->main_size,
1813             fw->ucode_size));
1814
1815         IPW_LOCK(sc);
1816
1817         sc->flags |= IPW_FLAG_FW_CACHED;
1818
1819         return 0;
1820
1821 fail3:  free(fw->ucode, M_DEVBUF);
1822 fail2:  free(fw->main, M_DEVBUF);
1823 fail1:  IPW_LOCK(sc);
1824
1825         return error;
1826 }
1827
1828 static void
1829 ipw_free_firmware(struct ipw_softc *sc)
1830 {
1831         if (!(sc->flags & IPW_FLAG_FW_CACHED))
1832                 return;
1833
1834         free(sc->fw.main, M_DEVBUF);
1835         free(sc->fw.ucode, M_DEVBUF);
1836
1837         sc->flags &= ~IPW_FLAG_FW_CACHED;
1838 }
1839
1840 static int
1841 ipw_config(struct ipw_softc *sc)
1842 {
1843         struct ieee80211com *ic = &sc->sc_ic;
1844         struct ifnet *ifp = ic->ic_ifp;
1845         struct ipw_security security;
1846         struct ieee80211_key *k;
1847         struct ipw_wep_key wepkey;
1848         struct ipw_scan_options options;
1849         struct ipw_configuration config;
1850         uint32_t data;
1851         int error, i;
1852
1853         switch (ic->ic_opmode) {
1854         case IEEE80211_M_STA:
1855         case IEEE80211_M_HOSTAP:
1856                 data = htole32(IPW_MODE_BSS);
1857                 break;
1858
1859         case IEEE80211_M_IBSS:
1860         case IEEE80211_M_AHDEMO:
1861                 data = htole32(IPW_MODE_IBSS);
1862                 break;
1863
1864         case IEEE80211_M_MONITOR:
1865                 data = htole32(IPW_MODE_MONITOR);
1866                 break;
1867         }
1868         DPRINTF(("Setting mode to %u\n", le32toh(data)));
1869         error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data);
1870         if (error != 0)
1871                 return error;
1872
1873         if (ic->ic_opmode == IEEE80211_M_IBSS ||
1874             ic->ic_opmode == IEEE80211_M_MONITOR) {
1875                 data = htole32(ieee80211_chan2ieee(ic, ic->ic_ibss_chan));
1876                 DPRINTF(("Setting channel to %u\n", le32toh(data)));
1877                 error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data);
1878                 if (error != 0)
1879                         return error;
1880         }
1881
1882         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
1883                 DPRINTF(("Enabling adapter\n"));
1884                 return ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
1885         }
1886
1887         IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp));
1888         DPRINTF(("Setting MAC address to %6D\n", ic->ic_myaddr, ":"));
1889         error = ipw_cmd(sc, IPW_CMD_SET_MAC_ADDRESS, ic->ic_myaddr,
1890             IEEE80211_ADDR_LEN);
1891         if (error != 0)
1892                 return error;
1893
1894         config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK |
1895             IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE);
1896         if (ic->ic_opmode == IEEE80211_M_IBSS)
1897                 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START);
1898         if (ifp->if_flags & IFF_PROMISC)
1899                 config.flags |= htole32(IPW_CFG_PROMISCUOUS);
1900         config.bss_chan = htole32(0x3fff); /* channels 1-14 */
1901         config.ibss_chan = htole32(0x7ff); /* channels 1-11 */
1902         DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags)));
1903         error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config);
1904         if (error != 0)
1905                 return error;
1906
1907         data = htole32(0x3); /* 1, 2 */
1908         DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data)));
1909         error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data);
1910         if (error != 0)
1911                 return error;
1912
1913         data = htole32(0xf); /* 1, 2, 5.5, 11 */
1914         DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data)));
1915         error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data);
1916         if (error != 0)
1917                 return error;
1918
1919         data = htole32(IPW_POWER_MODE_CAM);
1920         DPRINTF(("Setting power mode to %u\n", le32toh(data)));
1921         error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data);
1922         if (error != 0)
1923                 return error;
1924
1925         if (ic->ic_opmode == IEEE80211_M_IBSS) {
1926                 data = htole32(32); /* default value */
1927                 DPRINTF(("Setting tx power index to %u\n", le32toh(data)));
1928                 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data,
1929                     sizeof data);
1930                 if (error != 0)
1931                         return error;
1932         }
1933
1934         data = htole32(ic->ic_rtsthreshold);
1935         DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
1936         error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
1937         if (error != 0)
1938                 return error;
1939
1940         data = htole32(ic->ic_fragthreshold);
1941         DPRINTF(("Setting frag threshold to %u\n", le32toh(data)));
1942         error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
1943         if (error != 0)
1944                 return error;
1945
1946 #ifdef IPW_DEBUG
1947         if (ipw_debug > 0) {
1948                 printf("Setting ESSID to ");
1949                 ieee80211_print_essid(ic->ic_des_essid, ic->ic_des_esslen);
1950                 printf("\n");
1951         }
1952 #endif
1953         error = ipw_cmd(sc, IPW_CMD_SET_ESSID, ic->ic_des_essid,
1954             ic->ic_des_esslen);
1955         if (error != 0)
1956                 return error;
1957
1958         /* no mandatory BSSID */
1959         DPRINTF(("Setting mandatory BSSID to null\n"));
1960         error = ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0);
1961         if (error != 0)
1962                 return error;
1963
1964         if (ic->ic_flags & IEEE80211_F_DESBSSID) {
1965                 DPRINTF(("Setting desired BSSID to %6D\n", ic->ic_des_bssid,
1966                     ":"));
1967                 error = ipw_cmd(sc, IPW_CMD_SET_DESIRED_BSSID,
1968                     ic->ic_des_bssid, IEEE80211_ADDR_LEN);
1969                 if (error != 0)
1970                         return error;
1971         }
1972
1973         memset(&security, 0, sizeof security);
1974         security.authmode = (ic->ic_bss->ni_authmode == IEEE80211_AUTH_SHARED) ?
1975             IPW_AUTH_SHARED : IPW_AUTH_OPEN;
1976         security.ciphers = htole32(IPW_CIPHER_NONE);
1977         DPRINTF(("Setting authmode to %u\n", security.authmode));
1978         error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFORMATION, &security,
1979             sizeof security);
1980         if (error != 0)
1981                 return error;
1982
1983         if (ic->ic_flags & IEEE80211_F_PRIVACY) {
1984                 k = ic->ic_crypto.cs_nw_keys;
1985                 for (i = 0; i < IEEE80211_WEP_NKID; i++, k++) {
1986                         if (k->wk_keylen == 0)
1987                                 continue;
1988
1989                         wepkey.idx = i;
1990                         wepkey.len = k->wk_keylen;
1991                         memset(wepkey.key, 0, sizeof wepkey.key);
1992                         memcpy(wepkey.key, k->wk_key, k->wk_keylen);
1993                         DPRINTF(("Setting wep key index %u len %u\n",
1994                             wepkey.idx, wepkey.len));
1995                         error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey,
1996                             sizeof wepkey);
1997                         if (error != 0)
1998                                 return error;
1999                 }
2000
2001                 data = htole32(ic->ic_crypto.cs_def_txkey);
2002                 DPRINTF(("Setting wep tx key index to %u\n", le32toh(data)));
2003                 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data,
2004                     sizeof data);
2005                 if (error != 0)
2006                         return error;
2007         }
2008
2009         data = htole32((ic->ic_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0);
2010         DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data)));
2011         error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data);
2012         if (error != 0)
2013                 return error;
2014
2015 #if 0
2016         struct ipw_wpa_ie ie;
2017
2018         memset(&ie, 0, sizeof ie);
2019         ie.len = htole32(sizeof (struct ieee80211_ie_wpa));
2020         DPRINTF(("Setting wpa ie\n"));
2021         error = ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &ie, sizeof ie);
2022         if (error != 0)
2023                 return error;
2024 #endif
2025
2026         if (ic->ic_opmode == IEEE80211_M_IBSS) {
2027                 data = htole32(ic->ic_bintval);
2028                 DPRINTF(("Setting beacon interval to %u\n", le32toh(data)));
2029                 error = ipw_cmd(sc, IPW_CMD_SET_BEACON_INTERVAL, &data,
2030                     sizeof data);
2031                 if (error != 0)
2032                         return error;
2033         }
2034
2035         options.flags = 0;
2036         options.channels = htole32(0x3fff); /* scan channels 1-14 */
2037         DPRINTF(("Setting scan options to 0x%x\n", le32toh(options.flags)));
2038         error = ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &options, sizeof options);
2039         if (error != 0)
2040                 return error;
2041
2042         /* finally, enable adapter (start scanning for an access point) */
2043         DPRINTF(("Enabling adapter\n"));
2044         return ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
2045 }
2046
2047 static void
2048 ipw_init(void *priv)
2049 {
2050         struct ipw_softc *sc = priv;
2051         struct ieee80211com *ic = &sc->sc_ic;
2052         struct ifnet *ifp = ic->ic_ifp;
2053         struct ipw_firmware *fw = &sc->fw;
2054
2055         /* exit immediately if firmware has not been ioctl'd */
2056         if (!(sc->flags & IPW_FLAG_FW_CACHED)) {
2057                 if (!(sc->flags & IPW_FLAG_FW_WARNED))
2058                         device_printf(sc->sc_dev, "Please load firmware\n");
2059                 sc->flags |= IPW_FLAG_FW_WARNED;
2060                 ifp->if_flags &= ~IFF_UP;
2061                 return;
2062         }
2063
2064         ipw_stop(sc);
2065
2066         if (ipw_reset(sc) != 0) {
2067                 device_printf(sc->sc_dev, "could not reset adapter\n");
2068                 goto fail;
2069         }
2070
2071         if (ipw_load_ucode(sc, fw->ucode, fw->ucode_size) != 0) {
2072                 device_printf(sc->sc_dev, "could not load microcode\n");
2073                 goto fail;
2074         }
2075
2076         ipw_stop_master(sc);
2077
2078         /*
2079          * Setup tx, rx and status rings.
2080          */
2081         sc->txold = IPW_NTBD - 1;
2082         sc->txcur = 0;
2083         sc->txfree = IPW_NTBD - 2;
2084         sc->rxcur = IPW_NRBD - 1;
2085
2086         CSR_WRITE_4(sc, IPW_CSR_TX_BASE,  sc->tbd_phys);
2087         CSR_WRITE_4(sc, IPW_CSR_TX_SIZE,  IPW_NTBD);
2088         CSR_WRITE_4(sc, IPW_CSR_TX_READ,  0);
2089         CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
2090
2091         CSR_WRITE_4(sc, IPW_CSR_RX_BASE,  sc->rbd_phys);
2092         CSR_WRITE_4(sc, IPW_CSR_RX_SIZE,  IPW_NRBD);
2093         CSR_WRITE_4(sc, IPW_CSR_RX_READ,  0);
2094         CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
2095
2096         CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys);
2097
2098         if (ipw_load_firmware(sc, fw->main, fw->main_size) != 0) {
2099                 device_printf(sc->sc_dev, "could not load firmware\n");
2100                 goto fail;
2101         }
2102
2103         sc->flags |= IPW_FLAG_FW_INITED;
2104
2105         /* retrieve information tables base addresses */
2106         sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE);
2107         sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE);
2108
2109         ipw_write_table1(sc, IPW_INFO_LOCK, 0);
2110
2111         if (ipw_config(sc) != 0) {
2112                 device_printf(sc->sc_dev, "device configuration failed\n");
2113                 goto fail;
2114         }
2115
2116         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2117         ifp->if_drv_flags |= IFF_DRV_RUNNING;
2118
2119         return;
2120
2121 fail:   ifp->if_flags &= ~IFF_UP;
2122         ipw_stop(sc);
2123 }
2124
2125 static void
2126 ipw_stop(void *priv)
2127 {
2128         struct ipw_softc *sc = priv;
2129         struct ieee80211com *ic = &sc->sc_ic;
2130         struct ifnet *ifp = ic->ic_ifp;
2131         int i;
2132
2133         ipw_stop_master(sc);
2134
2135         CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET);
2136
2137         /*
2138          * Release tx buffers.
2139          */
2140         for (i = 0; i < IPW_NTBD; i++)
2141                 ipw_release_sbd(sc, &sc->stbd_list[i]);
2142
2143         sc->sc_tx_timer = 0;
2144         ifp->if_timer = 0;
2145         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2146
2147         ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
2148 }
2149
2150 static int
2151 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)
2152 {
2153         struct ipw_softc *sc = arg1;
2154         uint32_t i, size, buf[256];
2155
2156         memset(buf, 0, sizeof buf);
2157
2158         if (!(sc->flags & IPW_FLAG_FW_INITED))
2159                 return SYSCTL_OUT(req, buf, sizeof buf);
2160
2161         CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base);
2162
2163         size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256);
2164         for (i = 1; i < size; i++)
2165                 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA));
2166
2167         return SYSCTL_OUT(req, buf, size);
2168 }
2169
2170 static int
2171 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)
2172 {
2173         struct ipw_softc *sc = arg1;
2174         int val;
2175
2176         val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) &&
2177                 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED));
2178
2179         return SYSCTL_OUT(req, &val, sizeof val);
2180 }
2181
2182 static uint32_t
2183 ipw_read_table1(struct ipw_softc *sc, uint32_t off)
2184 {
2185         return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off));
2186 }
2187
2188 static void
2189 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info)
2190 {
2191         MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info);
2192 }
2193
2194 static int
2195 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len)
2196 {
2197         uint32_t addr, info;
2198         uint16_t count, size;
2199         uint32_t total;
2200
2201         /* addr[4] + count[2] + size[2] */
2202         addr = MEM_READ_4(sc, sc->table2_base + off);
2203         info = MEM_READ_4(sc, sc->table2_base + off + 4);
2204
2205         count = info >> 16;
2206         size = info & 0xffff;
2207         total = count * size;
2208
2209         if (total > *len) {
2210                 *len = total;
2211                 return EINVAL;
2212         }
2213
2214         *len = total;
2215         ipw_read_mem_1(sc, addr, buf, total);
2216
2217         return 0;
2218 }
2219
2220 static void
2221 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2222     bus_size_t count)
2223 {
2224         for (; count > 0; offset++, datap++, count--) {
2225                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2226                 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3));
2227         }
2228 }
2229
2230 static void
2231 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2232     bus_size_t count)
2233 {
2234         for (; count > 0; offset++, datap++, count--) {
2235                 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2236                 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap);
2237         }
2238 }