sys/dev/usb/wlan/if_upgt.c

   1 /*      $OpenBSD: if_upgt.c,v 1.35 2008/04/16 18:32:15 damien Exp $ */
   2 /*      $FreeBSD$ */
   3
   4 /*
   5  * Copyright (c) 2007 Marcus Glocker <mglocker@openbsd.org>
   6  *
   7  * Permission to use, copy, modify, and distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 #include <sys/param.h>
  21 #include <sys/systm.h>
  22 #include <sys/kernel.h>
  23 #include <sys/endian.h>
  24 #include <sys/firmware.h>
  25 #include <sys/linker.h>
  26 #include <sys/mbuf.h>
  27 #include <sys/malloc.h>
  28 #include <sys/module.h>
  29 #include <sys/socket.h>
  30 #include <sys/sockio.h>
  31 #include <sys/sysctl.h>
  32
  33 #include <net/if.h>
  34 #include <net/if_arp.h>
  35 #include <net/ethernet.h>
  36 #include <net/if_dl.h>
  37 #include <net/if_media.h>
  38 #include <net/if_types.h>
  39
  40 #include <sys/bus.h>
  41 #include <machine/bus.h>
  42
  43 #include <net80211/ieee80211_var.h>
  44 #include <net80211/ieee80211_phy.h>
  45 #include <net80211/ieee80211_radiotap.h>
  46 #include <net80211/ieee80211_regdomain.h>
  47
  48 #include <net/bpf.h>
  49
  50 #include <dev/usb/usb.h>
  51 #include <dev/usb/usbdi.h>
  52 #include "usbdevs.h"
  53
  54 #include <dev/usb/wlan/if_upgtvar.h>
  55
  56 /*
  57  * Driver for the USB PrismGT devices.
  58  *
  59  * For now just USB 2.0 devices with the GW3887 chipset are supported.
  60  * The driver has been written based on the firmware version 2.13.1.0_LM87.
  61  *
  62  * TODO's:
  63  * - MONITOR mode test.
  64  * - Add HOSTAP mode.
  65  * - Add IBSS mode.
  66  * - Support the USB 1.0 devices (NET2280, ISL3880, ISL3886 chipsets).
  67  *
  68  * Parts of this driver has been influenced by reading the p54u driver
  69  * written by Jean-Baptiste Note <jean-baptiste.note@m4x.org> and
  70  * Sebastien Bourdeauducq <lekernel@prism54.org>.
  71  */
  72
  73 SYSCTL_NODE(_hw, OID_AUTO, upgt, CTLFLAG_RD, 0,
  74     "USB PrismGT GW3887 driver parameters");
  75
  76 #ifdef UPGT_DEBUG
  77 int upgt_debug = 0;
  78 SYSCTL_INT(_hw_upgt, OID_AUTO, debug, CTLFLAG_RW, &upgt_debug,
  79             0, "control debugging printfs");
  80 TUNABLE_INT("hw.upgt.debug", &upgt_debug);
  81 enum {
  82         UPGT_DEBUG_XMIT         = 0x00000001,   /* basic xmit operation */
  83         UPGT_DEBUG_RECV         = 0x00000002,   /* basic recv operation */
  84         UPGT_DEBUG_RESET        = 0x00000004,   /* reset processing */
  85         UPGT_DEBUG_INTR         = 0x00000008,   /* INTR */
  86         UPGT_DEBUG_TX_PROC      = 0x00000010,   /* tx ISR proc */
  87         UPGT_DEBUG_RX_PROC      = 0x00000020,   /* rx ISR proc */
  88         UPGT_DEBUG_STATE        = 0x00000040,   /* 802.11 state transitions */
  89         UPGT_DEBUG_STAT         = 0x00000080,   /* statistic */
  90         UPGT_DEBUG_FW           = 0x00000100,   /* firmware */
  91         UPGT_DEBUG_ANY          = 0xffffffff
  92 };
  93 #define DPRINTF(sc, m, fmt, ...) do {                           \
  94         if (sc->sc_debug & (m))                                 \
  95                 printf(fmt, __VA_ARGS__);                       \
  96 } while (0)
  97 #else
  98 #define DPRINTF(sc, m, fmt, ...) do {                           \
  99         (void) sc;                                              \
 100 } while (0)
 101 #endif
 102
 103 /*
 104  * Prototypes.
 105  */
 106 static device_probe_t upgt_match;
 107 static device_attach_t upgt_attach;
 108 static device_detach_t upgt_detach;
 109 static int      upgt_alloc_tx(struct upgt_softc *);
 110 static int      upgt_alloc_rx(struct upgt_softc *);
 111 static int      upgt_device_reset(struct upgt_softc *);
 112 static void     upgt_bulk_tx(struct upgt_softc *, struct upgt_data *);
 113 static int      upgt_fw_verify(struct upgt_softc *);
 114 static int      upgt_mem_init(struct upgt_softc *);
 115 static int      upgt_fw_load(struct upgt_softc *);
 116 static int      upgt_fw_copy(const uint8_t *, char *, int);
 117 static uint32_t upgt_crc32_le(const void *, size_t);
 118 static struct mbuf *
 119                 upgt_rxeof(struct usb_xfer *, struct upgt_data *, int *);
 120 static struct mbuf *
 121                 upgt_rx(struct upgt_softc *, uint8_t *, int, int *);
 122 static void     upgt_txeof(struct usb_xfer *, struct upgt_data *);
 123 static int      upgt_eeprom_read(struct upgt_softc *);
 124 static int      upgt_eeprom_parse(struct upgt_softc *);
 125 static void     upgt_eeprom_parse_hwrx(struct upgt_softc *, uint8_t *);
 126 static void     upgt_eeprom_parse_freq3(struct upgt_softc *, uint8_t *, int);
 127 static void     upgt_eeprom_parse_freq4(struct upgt_softc *, uint8_t *, int);
 128 static void     upgt_eeprom_parse_freq6(struct upgt_softc *, uint8_t *, int);
 129 static uint32_t upgt_chksum_le(const uint32_t *, size_t);
 130 static void     upgt_tx_done(struct upgt_softc *, uint8_t *);
 131 static void     upgt_init(void *);
 132 static void     upgt_init_locked(struct upgt_softc *);
 133 static int      upgt_ioctl(struct ifnet *, u_long, caddr_t);
 134 static void     upgt_start(struct ifnet *);
 135 static int      upgt_raw_xmit(struct ieee80211_node *, struct mbuf *,
 136                     const struct ieee80211_bpf_params *);
 137 static void     upgt_scan_start(struct ieee80211com *);
 138 static void     upgt_scan_end(struct ieee80211com *);
 139 static void     upgt_set_channel(struct ieee80211com *);
 140 static struct ieee80211vap *upgt_vap_create(struct ieee80211com *,
 141                     const char name[IFNAMSIZ], int unit, int opmode,
 142                     int flags, const uint8_t bssid[IEEE80211_ADDR_LEN],
 143                     const uint8_t mac[IEEE80211_ADDR_LEN]);
 144 static void     upgt_vap_delete(struct ieee80211vap *);
 145 static void     upgt_update_mcast(struct ifnet *);
 146 static uint8_t  upgt_rx_rate(struct upgt_softc *, const int);
 147 static void     upgt_set_multi(void *);
 148 static void     upgt_stop(struct upgt_softc *);
 149 static void     upgt_setup_rates(struct ieee80211vap *, struct ieee80211com *);
 150 static int      upgt_set_macfilter(struct upgt_softc *, uint8_t);
 151 static int      upgt_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 152 static void     upgt_set_chan(struct upgt_softc *, struct ieee80211_channel *);
 153 static void     upgt_set_led(struct upgt_softc *, int);
 154 static void     upgt_set_led_blink(void *);
 155 static void     upgt_get_stats(struct upgt_softc *);
 156 static void     upgt_mem_free(struct upgt_softc *, uint32_t);
 157 static uint32_t upgt_mem_alloc(struct upgt_softc *);
 158 static void     upgt_free_tx(struct upgt_softc *);
 159 static void     upgt_free_rx(struct upgt_softc *);
 160 static void     upgt_watchdog(void *);
 161 static void     upgt_abort_xfers(struct upgt_softc *);
 162 static void     upgt_abort_xfers_locked(struct upgt_softc *);
 163 static void     upgt_sysctl_node(struct upgt_softc *);
 164 static struct upgt_data *
 165                 upgt_getbuf(struct upgt_softc *);
 166 static struct upgt_data *
 167                 upgt_gettxbuf(struct upgt_softc *);
 168 static int      upgt_tx_start(struct upgt_softc *, struct mbuf *,
 169                     struct ieee80211_node *, struct upgt_data *);
 170
 171 static const char *upgt_fwname = "upgt-gw3887";
 172
 173 static const struct usb_device_id upgt_devs_2[] = {
 174 #define UPGT_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
 175         /* version 2 devices */
 176         UPGT_DEV(ACCTON,        PRISM_GT),
 177         UPGT_DEV(BELKIN,        F5D7050),
 178         UPGT_DEV(CISCOLINKSYS,  WUSB54AG),
 179         UPGT_DEV(CONCEPTRONIC,  PRISM_GT),
 180         UPGT_DEV(DELL,          PRISM_GT_1),
 181         UPGT_DEV(DELL,          PRISM_GT_2),
 182         UPGT_DEV(FSC,           E5400),
 183         UPGT_DEV(GLOBESPAN,     PRISM_GT_1),
 184         UPGT_DEV(GLOBESPAN,     PRISM_GT_2),
 185         UPGT_DEV(INTERSIL,      PRISM_GT),
 186         UPGT_DEV(SMC,           2862WG),
 187         UPGT_DEV(WISTRONNEWEB,  UR045G),
 188         UPGT_DEV(XYRATEX,       PRISM_GT_1),
 189         UPGT_DEV(XYRATEX,       PRISM_GT_2),
 190         UPGT_DEV(ZCOM,          XG703A),
 191         UPGT_DEV(ZCOM,          XM142)
 192 };
 193
 194 static usb_callback_t upgt_bulk_rx_callback;
 195 static usb_callback_t upgt_bulk_tx_callback;
 196
 197 static const struct usb_config upgt_config[UPGT_N_XFERS] = {
 198         [UPGT_BULK_TX] = {
 199                 .type = UE_BULK,
 200                 .endpoint = UE_ADDR_ANY,
 201                 .direction = UE_DIR_OUT,
 202                 .bufsize = MCLBYTES,
 203                 .flags = {
 204                         .ext_buffer = 1,
 205                         .force_short_xfer = 1,
 206                         .pipe_bof = 1
 207                 },
 208                 .callback = upgt_bulk_tx_callback,
 209                 .timeout = UPGT_USB_TIMEOUT,    /* ms */
 210         },
 211         [UPGT_BULK_RX] = {
 212                 .type = UE_BULK,
 213                 .endpoint = UE_ADDR_ANY,
 214                 .direction = UE_DIR_IN,
 215                 .bufsize = MCLBYTES,
 216                 .flags = {
 217                         .ext_buffer = 1,
 218                         .pipe_bof = 1,
 219                         .short_xfer_ok = 1
 220                 },
 221                 .callback = upgt_bulk_rx_callback,
 222         },
 223 };
 224
 225 static int
 226 upgt_match(device_t dev)
 227 {
 228         struct usb_attach_arg *uaa = device_get_ivars(dev);
 229
 230         if (uaa->usb_mode != USB_MODE_HOST)
 231                 return (ENXIO);
 232         if (uaa->info.bConfigIndex != UPGT_CONFIG_INDEX)
 233                 return (ENXIO);
 234         if (uaa->info.bIfaceIndex != UPGT_IFACE_INDEX)
 235                 return (ENXIO);
 236
 237         return (usbd_lookup_id_by_uaa(upgt_devs_2, sizeof(upgt_devs_2), uaa));
 238 }
 239
 240 static int
 241 upgt_attach(device_t dev)
 242 {
 243         int error;
 244         struct ieee80211com *ic;
 245         struct ifnet *ifp;
 246         struct upgt_softc *sc = device_get_softc(dev);
 247         struct usb_attach_arg *uaa = device_get_ivars(dev);
 248         uint8_t bands, iface_index = UPGT_IFACE_INDEX;
 249
 250         sc->sc_dev = dev;
 251         sc->sc_udev = uaa->device;
 252 #ifdef UPGT_DEBUG
 253         sc->sc_debug = upgt_debug;
 254 #endif
 255         device_set_usb_desc(dev);
 256
 257         mtx_init(&sc->sc_mtx, device_get_nameunit(sc->sc_dev), MTX_NETWORK_LOCK,
 258             MTX_DEF);
 259         callout_init(&sc->sc_led_ch, 0);
 260         callout_init(&sc->sc_watchdog_ch, 0);
 261
 262         /* Allocate TX and RX xfers.  */
 263         error = upgt_alloc_tx(sc);
 264         if (error)
 265                 goto fail1;
 266         error = upgt_alloc_rx(sc);
 267         if (error)
 268                 goto fail2;
 269
 270         error = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer,
 271             upgt_config, UPGT_N_XFERS, sc, &sc->sc_mtx);
 272         if (error) {
 273                 device_printf(dev, "could not allocate USB transfers, "
 274                     "err=%s\n", usbd_errstr(error));
 275                 goto fail3;
 276         }
 277
 278         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 279         if (ifp == NULL) {
 280                 device_printf(dev, "can not if_alloc()\n");
 281                 goto fail4;
 282         }
 283
 284         /* Initialize the device.  */
 285         error = upgt_device_reset(sc);
 286         if (error)
 287                 goto fail5;
 288         /* Verify the firmware.  */
 289         error = upgt_fw_verify(sc);
 290         if (error)
 291                 goto fail5;
 292         /* Calculate device memory space.  */
 293         if (sc->sc_memaddr_frame_start == 0 || sc->sc_memaddr_frame_end == 0) {
 294                 device_printf(dev,
 295                     "could not find memory space addresses on FW\n");
 296                 error = EIO;
 297                 goto fail5;
 298         }
 299         sc->sc_memaddr_frame_end -= UPGT_MEMSIZE_RX + 1;
 300         sc->sc_memaddr_rx_start = sc->sc_memaddr_frame_end + 1;
 301
 302         DPRINTF(sc, UPGT_DEBUG_FW, "memory address frame start=0x%08x\n",
 303             sc->sc_memaddr_frame_start);
 304         DPRINTF(sc, UPGT_DEBUG_FW, "memory address frame end=0x%08x\n",
 305             sc->sc_memaddr_frame_end);
 306         DPRINTF(sc, UPGT_DEBUG_FW, "memory address rx start=0x%08x\n",
 307             sc->sc_memaddr_rx_start);
 308
 309         upgt_mem_init(sc);
 310
 311         /* Load the firmware.  */
 312         error = upgt_fw_load(sc);
 313         if (error)
 314                 goto fail5;
 315
 316         /* Read the whole EEPROM content and parse it.  */
 317         error = upgt_eeprom_read(sc);
 318         if (error)
 319                 goto fail5;
 320         error = upgt_eeprom_parse(sc);
 321         if (error)
 322                 goto fail5;
 323
 324         /* all works related with the device have done here. */
 325         upgt_abort_xfers(sc);
 326
 327         /* Setup the 802.11 device.  */
 328         ifp->if_softc = sc;
 329         if_initname(ifp, "upgt", device_get_unit(sc->sc_dev));
 330         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 331         ifp->if_init = upgt_init;
 332         ifp->if_ioctl = upgt_ioctl;
 333         ifp->if_start = upgt_start;
 334         IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
 335         IFQ_SET_READY(&ifp->if_snd);
 336
 337         ic = ifp->if_l2com;
 338         ic->ic_ifp = ifp;
 339         ic->ic_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
 340         ic->ic_opmode = IEEE80211_M_STA;
 341         /* set device capabilities */
 342         ic->ic_caps =
 343                   IEEE80211_C_STA               /* station mode */
 344                 | IEEE80211_C_MONITOR           /* monitor mode */
 345                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 346                 | IEEE80211_C_SHSLOT            /* short slot time supported */
 347                 | IEEE80211_C_BGSCAN            /* capable of bg scanning */
 348                 | IEEE80211_C_WPA               /* 802.11i */
 349                 ;
 350
 351         bands = 0;
 352         setbit(&bands, IEEE80211_MODE_11B);
 353         setbit(&bands, IEEE80211_MODE_11G);
 354         ieee80211_init_channels(ic, NULL, &bands);
 355
 356         ieee80211_ifattach(ic, sc->sc_myaddr);
 357         ic->ic_raw_xmit = upgt_raw_xmit;
 358         ic->ic_scan_start = upgt_scan_start;
 359         ic->ic_scan_end = upgt_scan_end;
 360         ic->ic_set_channel = upgt_set_channel;
 361
 362         ic->ic_vap_create = upgt_vap_create;
 363         ic->ic_vap_delete = upgt_vap_delete;
 364         ic->ic_update_mcast = upgt_update_mcast;
 365
 366         ieee80211_radiotap_attach(ic,
 367             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 368                 UPGT_TX_RADIOTAP_PRESENT,
 369             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 370                 UPGT_RX_RADIOTAP_PRESENT);
 371
 372         upgt_sysctl_node(sc);
 373
 374         if (bootverbose)
 375                 ieee80211_announce(ic);
 376
 377         return (0);
 378
 379 fail5:  if_free(ifp);
 380 fail4:  usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
 381 fail3:  upgt_free_rx(sc);
 382 fail2:  upgt_free_tx(sc);
 383 fail1:  mtx_destroy(&sc->sc_mtx);
 384
 385         return (error);
 386 }
 387
 388 static void
 389 upgt_txeof(struct usb_xfer *xfer, struct upgt_data *data)
 390 {
 391         struct upgt_softc *sc = usbd_xfer_softc(xfer);
 392         struct ifnet *ifp = sc->sc_ifp;
 393         struct mbuf *m;
 394
 395         UPGT_ASSERT_LOCKED(sc);
 396
 397         /*
 398          * Do any tx complete callback.  Note this must be done before releasing
 399          * the node reference.
 400          */
 401         if (data->m) {
 402                 m = data->m;
 403                 if (m->m_flags & M_TXCB) {
 404                         /* XXX status? */
 405                         ieee80211_process_callback(data->ni, m, 0);
 406                 }
 407                 m_freem(m);
 408                 data->m = NULL;
 409         }
 410         if (data->ni) {
 411                 ieee80211_free_node(data->ni);
 412                 data->ni = NULL;
 413         }
 414         ifp->if_opackets++;
 415 }
 416
 417 static void
 418 upgt_get_stats(struct upgt_softc *sc)
 419 {
 420         struct upgt_data *data_cmd;
 421         struct upgt_lmac_mem *mem;
 422         struct upgt_lmac_stats *stats;
 423
 424         data_cmd = upgt_getbuf(sc);
 425         if (data_cmd == NULL) {
 426                 device_printf(sc->sc_dev, "%s: out of buffer.\n", __func__);
 427                 return;
 428         }
 429
 430         /*
 431          * Transmit the URB containing the CMD data.
 432          */
 433         bzero(data_cmd->buf, MCLBYTES);
 434
 435         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 436         mem->addr = htole32(sc->sc_memaddr_frame_start +
 437             UPGT_MEMSIZE_FRAME_HEAD);
 438
 439         stats = (struct upgt_lmac_stats *)(mem + 1);
 440
 441         stats->header1.flags = 0;
 442         stats->header1.type = UPGT_H1_TYPE_CTRL;
 443         stats->header1.len = htole16(
 444             sizeof(struct upgt_lmac_stats) - sizeof(struct upgt_lmac_header));
 445
 446         stats->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 447         stats->header2.type = htole16(UPGT_H2_TYPE_STATS);
 448         stats->header2.flags = 0;
 449
 450         data_cmd->buflen = sizeof(*mem) + sizeof(*stats);
 451
 452         mem->chksum = upgt_chksum_le((uint32_t *)stats,
 453             data_cmd->buflen - sizeof(*mem));
 454
 455         upgt_bulk_tx(sc, data_cmd);
 456 }
 457
 458 static int
 459 upgt_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 460 {
 461         struct upgt_softc *sc = ifp->if_softc;
 462         struct ieee80211com *ic = ifp->if_l2com;
 463         struct ifreq *ifr = (struct ifreq *) data;
 464         int error = 0, startall = 0;
 465
 466         switch (cmd) {
 467         case SIOCSIFFLAGS:
 468                 if (ifp->if_flags & IFF_UP) {
 469                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 470                                 if ((ifp->if_flags ^ sc->sc_if_flags) &
 471                                     (IFF_ALLMULTI | IFF_PROMISC))
 472                                         upgt_set_multi(sc);
 473                         } else {
 474                                 upgt_init(sc);
 475                                 startall = 1;
 476                         }
 477                 } else {
 478                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 479                                 upgt_stop(sc);
 480                 }
 481                 sc->sc_if_flags = ifp->if_flags;
 482                 if (startall)
 483                         ieee80211_start_all(ic);
 484                 break;
 485         case SIOCGIFMEDIA:
 486                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
 487                 break;
 488         case SIOCGIFADDR:
 489                 error = ether_ioctl(ifp, cmd, data);
 490                 break;
 491         default:
 492                 error = EINVAL;
 493                 break;
 494         }
 495         return error;
 496 }
 497
 498 static void
 499 upgt_stop_locked(struct upgt_softc *sc)
 500 {
 501         struct ifnet *ifp = sc->sc_ifp;
 502
 503         UPGT_ASSERT_LOCKED(sc);
 504
 505         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 506                 upgt_set_macfilter(sc, IEEE80211_S_INIT);
 507         upgt_abort_xfers_locked(sc);
 508 }
 509
 510 static void
 511 upgt_stop(struct upgt_softc *sc)
 512 {
 513         struct ifnet *ifp = sc->sc_ifp;
 514
 515         UPGT_LOCK(sc);
 516         upgt_stop_locked(sc);
 517         UPGT_UNLOCK(sc);
 518
 519         /* device down */
 520         sc->sc_tx_timer = 0;
 521         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
 522         sc->sc_flags &= ~UPGT_FLAG_INITDONE;
 523 }
 524
 525 static void
 526 upgt_set_led(struct upgt_softc *sc, int action)
 527 {
 528         struct upgt_data *data_cmd;
 529         struct upgt_lmac_mem *mem;
 530         struct upgt_lmac_led *led;
 531
 532         data_cmd = upgt_getbuf(sc);
 533         if (data_cmd == NULL) {
 534                 device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
 535                 return;
 536         }
 537
 538         /*
 539          * Transmit the URB containing the CMD data.
 540          */
 541         bzero(data_cmd->buf, MCLBYTES);
 542
 543         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 544         mem->addr = htole32(sc->sc_memaddr_frame_start +
 545             UPGT_MEMSIZE_FRAME_HEAD);
 546
 547         led = (struct upgt_lmac_led *)(mem + 1);
 548
 549         led->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 550         led->header1.type = UPGT_H1_TYPE_CTRL;
 551         led->header1.len = htole16(
 552             sizeof(struct upgt_lmac_led) -
 553             sizeof(struct upgt_lmac_header));
 554
 555         led->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 556         led->header2.type = htole16(UPGT_H2_TYPE_LED);
 557         led->header2.flags = 0;
 558
 559         switch (action) {
 560         case UPGT_LED_OFF:
 561                 led->mode = htole16(UPGT_LED_MODE_SET);
 562                 led->action_fix = 0;
 563                 led->action_tmp = htole16(UPGT_LED_ACTION_OFF);
 564                 led->action_tmp_dur = 0;
 565                 break;
 566         case UPGT_LED_ON:
 567                 led->mode = htole16(UPGT_LED_MODE_SET);
 568                 led->action_fix = 0;
 569                 led->action_tmp = htole16(UPGT_LED_ACTION_ON);
 570                 led->action_tmp_dur = 0;
 571                 break;
 572         case UPGT_LED_BLINK:
 573                 if (sc->sc_state != IEEE80211_S_RUN) {
 574                         STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 575                         return;
 576                 }
 577                 if (sc->sc_led_blink) {
 578                         /* previous blink was not finished */
 579                         STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 580                         return;
 581                 }
 582                 led->mode = htole16(UPGT_LED_MODE_SET);
 583                 led->action_fix = htole16(UPGT_LED_ACTION_OFF);
 584                 led->action_tmp = htole16(UPGT_LED_ACTION_ON);
 585                 led->action_tmp_dur = htole16(UPGT_LED_ACTION_TMP_DUR);
 586                 /* lock blink */
 587                 sc->sc_led_blink = 1;
 588                 callout_reset(&sc->sc_led_ch, hz, upgt_set_led_blink, sc);
 589                 break;
 590         default:
 591                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 592                 return;
 593         }
 594
 595         data_cmd->buflen = sizeof(*mem) + sizeof(*led);
 596
 597         mem->chksum = upgt_chksum_le((uint32_t *)led,
 598             data_cmd->buflen - sizeof(*mem));
 599
 600         upgt_bulk_tx(sc, data_cmd);
 601 }
 602
 603 static void
 604 upgt_set_led_blink(void *arg)
 605 {
 606         struct upgt_softc *sc = arg;
 607
 608         /* blink finished, we are ready for a next one */
 609         sc->sc_led_blink = 0;
 610 }
 611
 612 static void
 613 upgt_init(void *priv)
 614 {
 615         struct upgt_softc *sc = priv;
 616         struct ifnet *ifp = sc->sc_ifp;
 617         struct ieee80211com *ic = ifp->if_l2com;
 618
 619         UPGT_LOCK(sc);
 620         upgt_init_locked(sc);
 621         UPGT_UNLOCK(sc);
 622
 623         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 624                 ieee80211_start_all(ic);                /* start all vap's */
 625 }
 626
 627 static void
 628 upgt_init_locked(struct upgt_softc *sc)
 629 {
 630         struct ifnet *ifp = sc->sc_ifp;
 631
 632         UPGT_ASSERT_LOCKED(sc);
 633
 634         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 635                 upgt_stop_locked(sc);
 636
 637         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_RX]);
 638
 639         (void)upgt_set_macfilter(sc, IEEE80211_S_SCAN);
 640
 641         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 642         ifp->if_drv_flags |= IFF_DRV_RUNNING;
 643         sc->sc_flags |= UPGT_FLAG_INITDONE;
 644
 645         callout_reset(&sc->sc_watchdog_ch, hz, upgt_watchdog, sc);
 646 }
 647
 648 static int
 649 upgt_set_macfilter(struct upgt_softc *sc, uint8_t state)
 650 {
 651         struct ifnet *ifp = sc->sc_ifp;
 652         struct ieee80211com *ic = ifp->if_l2com;
 653         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
 654         struct ieee80211_node *ni = vap->iv_bss;
 655         struct upgt_data *data_cmd;
 656         struct upgt_lmac_mem *mem;
 657         struct upgt_lmac_filter *filter;
 658         uint8_t broadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 659
 660         UPGT_ASSERT_LOCKED(sc);
 661
 662         data_cmd = upgt_getbuf(sc);
 663         if (data_cmd == NULL) {
 664                 device_printf(sc->sc_dev, "out of TX buffers.\n");
 665                 return (ENOBUFS);
 666         }
 667
 668         /*
 669          * Transmit the URB containing the CMD data.
 670          */
 671         bzero(data_cmd->buf, MCLBYTES);
 672
 673         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 674         mem->addr = htole32(sc->sc_memaddr_frame_start +
 675             UPGT_MEMSIZE_FRAME_HEAD);
 676
 677         filter = (struct upgt_lmac_filter *)(mem + 1);
 678
 679         filter->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 680         filter->header1.type = UPGT_H1_TYPE_CTRL;
 681         filter->header1.len = htole16(
 682             sizeof(struct upgt_lmac_filter) -
 683             sizeof(struct upgt_lmac_header));
 684
 685         filter->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 686         filter->header2.type = htole16(UPGT_H2_TYPE_MACFILTER);
 687         filter->header2.flags = 0;
 688
 689         switch (state) {
 690         case IEEE80211_S_INIT:
 691                 DPRINTF(sc, UPGT_DEBUG_STATE, "%s: set MAC filter to INIT\n",
 692                     __func__);
 693                 filter->type = htole16(UPGT_FILTER_TYPE_RESET);
 694                 break;
 695         case IEEE80211_S_SCAN:
 696                 DPRINTF(sc, UPGT_DEBUG_STATE,
 697                     "set MAC filter to SCAN (bssid %s)\n",
 698                     ether_sprintf(broadcast));
 699                 filter->type = htole16(UPGT_FILTER_TYPE_NONE);
 700                 IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 701                 IEEE80211_ADDR_COPY(filter->src, broadcast);
 702                 filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1);
 703                 filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 704                 filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2);
 705                 filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 706                 filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3);
 707                 break;
 708         case IEEE80211_S_RUN:
 709                 /* XXX monitor mode isn't tested yet.  */
 710                 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
 711                         filter->type = htole16(UPGT_FILTER_TYPE_MONITOR);
 712                         IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 713                         IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid);
 714                         filter->unknown1 = htole16(UPGT_FILTER_MONITOR_UNKNOWN1);
 715                         filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 716                         filter->unknown2 = htole16(UPGT_FILTER_MONITOR_UNKNOWN2);
 717                         filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 718                         filter->unknown3 = htole16(UPGT_FILTER_MONITOR_UNKNOWN3);
 719                 } else {
 720                         DPRINTF(sc, UPGT_DEBUG_STATE,
 721                             "set MAC filter to RUN (bssid %s)\n",
 722                             ether_sprintf(ni->ni_bssid));
 723                         filter->type = htole16(UPGT_FILTER_TYPE_STA);
 724                         IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 725                         IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid);
 726                         filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1);
 727                         filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 728                         filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2);
 729                         filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 730                         filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3);
 731                 }
 732                 break;
 733         default:
 734                 device_printf(sc->sc_dev,
 735                     "MAC filter does not know that state\n");
 736                 break;
 737         }
 738
 739         data_cmd->buflen = sizeof(*mem) + sizeof(*filter);
 740
 741         mem->chksum = upgt_chksum_le((uint32_t *)filter,
 742             data_cmd->buflen - sizeof(*mem));
 743
 744         upgt_bulk_tx(sc, data_cmd);
 745
 746         return (0);
 747 }
 748
 749 static void
 750 upgt_setup_rates(struct ieee80211vap *vap, struct ieee80211com *ic)
 751 {
 752         struct ifnet *ifp = ic->ic_ifp;
 753         struct upgt_softc *sc = ifp->if_softc;
 754         const struct ieee80211_txparam *tp;
 755
 756         /*
 757          * 0x01 = OFMD6   0x10 = DS1
 758          * 0x04 = OFDM9   0x11 = DS2
 759          * 0x06 = OFDM12  0x12 = DS5
 760          * 0x07 = OFDM18  0x13 = DS11
 761          * 0x08 = OFDM24
 762          * 0x09 = OFDM36
 763          * 0x0a = OFDM48
 764          * 0x0b = OFDM54
 765          */
 766         const uint8_t rateset_auto_11b[] =
 767             { 0x13, 0x13, 0x12, 0x11, 0x11, 0x10, 0x10, 0x10 };
 768         const uint8_t rateset_auto_11g[] =
 769             { 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x04, 0x01 };
 770         const uint8_t rateset_fix_11bg[] =
 771             { 0x10, 0x11, 0x12, 0x13, 0x01, 0x04, 0x06, 0x07,
 772               0x08, 0x09, 0x0a, 0x0b };
 773
 774         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
 775
 776         /* XXX */
 777         if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) {
 778                 /*
 779                  * Automatic rate control is done by the device.
 780                  * We just pass the rateset from which the device
 781                  * will pickup a rate.
 782                  */
 783                 if (ic->ic_curmode == IEEE80211_MODE_11B)
 784                         bcopy(rateset_auto_11b, sc->sc_cur_rateset,
 785                             sizeof(sc->sc_cur_rateset));
 786                 if (ic->ic_curmode == IEEE80211_MODE_11G ||
 787                     ic->ic_curmode == IEEE80211_MODE_AUTO)
 788                         bcopy(rateset_auto_11g, sc->sc_cur_rateset,
 789                             sizeof(sc->sc_cur_rateset));
 790         } else {
 791                 /* set a fixed rate */
 792                 memset(sc->sc_cur_rateset, rateset_fix_11bg[tp->ucastrate],
 793                     sizeof(sc->sc_cur_rateset));
 794         }
 795 }
 796
 797 static void
 798 upgt_set_multi(void *arg)
 799 {
 800         struct upgt_softc *sc = arg;
 801         struct ifnet *ifp = sc->sc_ifp;
 802
 803         if (!(ifp->if_flags & IFF_UP))
 804                 return;
 805
 806         /*
 807          * XXX don't know how to set a device.  Lack of docs.  Just try to set
 808          * IFF_ALLMULTI flag here.
 809          */
 810         ifp->if_flags |= IFF_ALLMULTI;
 811 }
 812
 813 static void
 814 upgt_start(struct ifnet *ifp)
 815 {
 816         struct upgt_softc *sc = ifp->if_softc;
 817         struct upgt_data *data_tx;
 818         struct ieee80211_node *ni;
 819         struct mbuf *m;
 820
 821         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
 822                 return;
 823
 824         UPGT_LOCK(sc);
 825         for (;;) {
 826                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
 827                 if (m == NULL)
 828                         break;
 829
 830                 data_tx = upgt_gettxbuf(sc);
 831                 if (data_tx == NULL) {
 832                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
 833                         break;
 834                 }
 835
 836                 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
 837                 m->m_pkthdr.rcvif = NULL;
 838
 839                 if (upgt_tx_start(sc, m, ni, data_tx) != 0) {
 840                         STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, data_tx, next);
 841                         UPGT_STAT_INC(sc, st_tx_inactive);
 842                         ieee80211_free_node(ni);
 843                         ifp->if_oerrors++;
 844                         continue;
 845                 }
 846                 sc->sc_tx_timer = 5;
 847         }
 848         UPGT_UNLOCK(sc);
 849 }
 850
 851 static int
 852 upgt_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
 853         const struct ieee80211_bpf_params *params)
 854 {
 855         struct ieee80211com *ic = ni->ni_ic;
 856         struct ifnet *ifp = ic->ic_ifp;
 857         struct upgt_softc *sc = ifp->if_softc;
 858         struct upgt_data *data_tx = NULL;
 859
 860         /* prevent management frames from being sent if we're not ready */
 861         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 862                 m_freem(m);
 863                 ieee80211_free_node(ni);
 864                 return ENETDOWN;
 865         }
 866
 867         UPGT_LOCK(sc);
 868         data_tx = upgt_gettxbuf(sc);
 869         if (data_tx == NULL) {
 870                 ieee80211_free_node(ni);
 871                 m_freem(m);
 872                 UPGT_UNLOCK(sc);
 873                 return (ENOBUFS);
 874         }
 875
 876         if (upgt_tx_start(sc, m, ni, data_tx) != 0) {
 877                 STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, data_tx, next);
 878                 UPGT_STAT_INC(sc, st_tx_inactive);
 879                 ieee80211_free_node(ni);
 880                 ifp->if_oerrors++;
 881                 UPGT_UNLOCK(sc);
 882                 return (EIO);
 883         }
 884         UPGT_UNLOCK(sc);
 885
 886         sc->sc_tx_timer = 5;
 887         return (0);
 888 }
 889
 890 static void
 891 upgt_watchdog(void *arg)
 892 {
 893         struct upgt_softc *sc = arg;
 894         struct ifnet *ifp = sc->sc_ifp;
 895
 896         if (sc->sc_tx_timer > 0) {
 897                 if (--sc->sc_tx_timer == 0) {
 898                         device_printf(sc->sc_dev, "watchdog timeout\n");
 899                         /* upgt_init(ifp); XXX needs a process context ? */
 900                         ifp->if_oerrors++;
 901                         return;
 902                 }
 903                 callout_reset(&sc->sc_watchdog_ch, hz, upgt_watchdog, sc);
 904         }
 905 }
 906
 907 static uint32_t
 908 upgt_mem_alloc(struct upgt_softc *sc)
 909 {
 910         int i;
 911
 912         for (i = 0; i < sc->sc_memory.pages; i++) {
 913                 if (sc->sc_memory.page[i].used == 0) {
 914                         sc->sc_memory.page[i].used = 1;
 915                         return (sc->sc_memory.page[i].addr);
 916                 }
 917         }
 918
 919         return (0);
 920 }
 921
 922 static void
 923 upgt_scan_start(struct ieee80211com *ic)
 924 {
 925         /* do nothing.  */
 926 }
 927
 928 static void
 929 upgt_scan_end(struct ieee80211com *ic)
 930 {
 931         /* do nothing.  */
 932 }
 933
 934 static void
 935 upgt_set_channel(struct ieee80211com *ic)
 936 {
 937         struct upgt_softc *sc = ic->ic_ifp->if_softc;
 938
 939         UPGT_LOCK(sc);
 940         upgt_set_chan(sc, ic->ic_curchan);
 941         UPGT_UNLOCK(sc);
 942 }
 943
 944 static void
 945 upgt_set_chan(struct upgt_softc *sc, struct ieee80211_channel *c)
 946 {
 947         struct ifnet *ifp = sc->sc_ifp;
 948         struct ieee80211com *ic = ifp->if_l2com;
 949         struct upgt_data *data_cmd;
 950         struct upgt_lmac_mem *mem;
 951         struct upgt_lmac_channel *chan;
 952         int channel;
 953
 954         UPGT_ASSERT_LOCKED(sc);
 955
 956         channel = ieee80211_chan2ieee(ic, c);
 957         if (channel == 0 || channel == IEEE80211_CHAN_ANY) {
 958                 /* XXX should NEVER happen */
 959                 device_printf(sc->sc_dev,
 960                     "%s: invalid channel %x\n", __func__, channel);
 961                 return;
 962         }
 963
 964         DPRINTF(sc, UPGT_DEBUG_STATE, "%s: channel %d\n", __func__, channel);
 965
 966         data_cmd = upgt_getbuf(sc);
 967         if (data_cmd == NULL) {
 968                 device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
 969                 return;
 970         }
 971         /*
 972          * Transmit the URB containing the CMD data.
 973          */
 974         bzero(data_cmd->buf, MCLBYTES);
 975
 976         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 977         mem->addr = htole32(sc->sc_memaddr_frame_start +
 978             UPGT_MEMSIZE_FRAME_HEAD);
 979
 980         chan = (struct upgt_lmac_channel *)(mem + 1);
 981
 982         chan->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 983         chan->header1.type = UPGT_H1_TYPE_CTRL;
 984         chan->header1.len = htole16(
 985             sizeof(struct upgt_lmac_channel) - sizeof(struct upgt_lmac_header));
 986
 987         chan->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 988         chan->header2.type = htole16(UPGT_H2_TYPE_CHANNEL);
 989         chan->header2.flags = 0;
 990
 991         chan->unknown1 = htole16(UPGT_CHANNEL_UNKNOWN1);
 992         chan->unknown2 = htole16(UPGT_CHANNEL_UNKNOWN2);
 993         chan->freq6 = sc->sc_eeprom_freq6[channel];
 994         chan->settings = sc->sc_eeprom_freq6_settings;
 995         chan->unknown3 = UPGT_CHANNEL_UNKNOWN3;
 996
 997         bcopy(&sc->sc_eeprom_freq3[channel].data, chan->freq3_1,
 998             sizeof(chan->freq3_1));
 999         bcopy(&sc->sc_eeprom_freq4[channel], chan->freq4,
1000             sizeof(sc->sc_eeprom_freq4[channel]));
1001         bcopy(&sc->sc_eeprom_freq3[channel].data, chan->freq3_2,
1002             sizeof(chan->freq3_2));
1003
1004         data_cmd->buflen = sizeof(*mem) + sizeof(*chan);
1005
1006         mem->chksum = upgt_chksum_le((uint32_t *)chan,
1007             data_cmd->buflen - sizeof(*mem));
1008
1009         upgt_bulk_tx(sc, data_cmd);
1010 }
1011
1012 static struct ieee80211vap *
1013 upgt_vap_create(struct ieee80211com *ic,
1014         const char name[IFNAMSIZ], int unit, int opmode, int flags,
1015         const uint8_t bssid[IEEE80211_ADDR_LEN],
1016         const uint8_t mac[IEEE80211_ADDR_LEN])
1017 {
1018         struct upgt_vap *uvp;
1019         struct ieee80211vap *vap;
1020
1021         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
1022                 return NULL;
1023         uvp = (struct upgt_vap *) malloc(sizeof(struct upgt_vap),
1024             M_80211_VAP, M_NOWAIT | M_ZERO);
1025         if (uvp == NULL)
1026                 return NULL;
1027         vap = &uvp->vap;
1028         /* enable s/w bmiss handling for sta mode */
1029         ieee80211_vap_setup(ic, vap, name, unit, opmode,
1030             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
1031
1032         /* override state transition machine */
1033         uvp->newstate = vap->iv_newstate;
1034         vap->iv_newstate = upgt_newstate;
1035
1036         /* setup device rates */
1037         upgt_setup_rates(vap, ic);
1038
1039         /* complete setup */
1040         ieee80211_vap_attach(vap, ieee80211_media_change,
1041             ieee80211_media_status);
1042         ic->ic_opmode = opmode;
1043         return vap;
1044 }
1045
1046 static int
1047 upgt_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1048 {
1049         struct upgt_vap *uvp = UPGT_VAP(vap);
1050         struct ieee80211com *ic = vap->iv_ic;
1051         struct upgt_softc *sc = ic->ic_ifp->if_softc;
1052
1053         /* do it in a process context */
1054         sc->sc_state = nstate;
1055
1056         IEEE80211_UNLOCK(ic);
1057         UPGT_LOCK(sc);
1058         callout_stop(&sc->sc_led_ch);
1059         callout_stop(&sc->sc_watchdog_ch);
1060
1061         switch (nstate) {
1062         case IEEE80211_S_INIT:
1063                 /* do not accept any frames if the device is down */
1064                 (void)upgt_set_macfilter(sc, sc->sc_state);
1065                 upgt_set_led(sc, UPGT_LED_OFF);
1066                 break;
1067         case IEEE80211_S_SCAN:
1068                 upgt_set_chan(sc, ic->ic_curchan);
1069                 break;
1070         case IEEE80211_S_AUTH:
1071                 upgt_set_chan(sc, ic->ic_curchan);
1072                 break;
1073         case IEEE80211_S_ASSOC:
1074                 break;
1075         case IEEE80211_S_RUN:
1076                 upgt_set_macfilter(sc, sc->sc_state);
1077                 upgt_set_led(sc, UPGT_LED_ON);
1078                 break;
1079         default:
1080                 break;
1081         }
1082         UPGT_UNLOCK(sc);
1083         IEEE80211_LOCK(ic);
1084         return (uvp->newstate(vap, nstate, arg));
1085 }
1086
1087 static void
1088 upgt_vap_delete(struct ieee80211vap *vap)
1089 {
1090         struct upgt_vap *uvp = UPGT_VAP(vap);
1091
1092         ieee80211_vap_detach(vap);
1093         free(uvp, M_80211_VAP);
1094 }
1095
1096 static void
1097 upgt_update_mcast(struct ifnet *ifp)
1098 {
1099         struct upgt_softc *sc = ifp->if_softc;
1100
1101         upgt_set_multi(sc);
1102 }
1103
1104 static int
1105 upgt_eeprom_parse(struct upgt_softc *sc)
1106 {
1107         struct upgt_eeprom_header *eeprom_header;
1108         struct upgt_eeprom_option *eeprom_option;
1109         uint16_t option_len;
1110         uint16_t option_type;
1111         uint16_t preamble_len;
1112         int option_end = 0;
1113
1114         /* calculate eeprom options start offset */
1115         eeprom_header = (struct upgt_eeprom_header *)sc->sc_eeprom;
1116         preamble_len = le16toh(eeprom_header->preamble_len);
1117         eeprom_option = (struct upgt_eeprom_option *)(sc->sc_eeprom +
1118             (sizeof(struct upgt_eeprom_header) + preamble_len));
1119
1120         while (!option_end) {
1121                 /* the eeprom option length is stored in words */
1122                 option_len =
1123                     (le16toh(eeprom_option->len) - 1) * sizeof(uint16_t);
1124                 option_type =
1125                     le16toh(eeprom_option->type);
1126
1127                 switch (option_type) {
1128                 case UPGT_EEPROM_TYPE_NAME:
1129                         DPRINTF(sc, UPGT_DEBUG_FW,
1130                             "EEPROM name len=%d\n", option_len);
1131                         break;
1132                 case UPGT_EEPROM_TYPE_SERIAL:
1133                         DPRINTF(sc, UPGT_DEBUG_FW,
1134                             "EEPROM serial len=%d\n", option_len);
1135                         break;
1136                 case UPGT_EEPROM_TYPE_MAC:
1137                         DPRINTF(sc, UPGT_DEBUG_FW,
1138                             "EEPROM mac len=%d\n", option_len);
1139
1140                         IEEE80211_ADDR_COPY(sc->sc_myaddr, eeprom_option->data);
1141                         break;
1142                 case UPGT_EEPROM_TYPE_HWRX:
1143                         DPRINTF(sc, UPGT_DEBUG_FW,
1144                             "EEPROM hwrx len=%d\n", option_len);
1145
1146                         upgt_eeprom_parse_hwrx(sc, eeprom_option->data);
1147                         break;
1148                 case UPGT_EEPROM_TYPE_CHIP:
1149                         DPRINTF(sc, UPGT_DEBUG_FW,
1150                             "EEPROM chip len=%d\n", option_len);
1151                         break;
1152                 case UPGT_EEPROM_TYPE_FREQ3:
1153                         DPRINTF(sc, UPGT_DEBUG_FW,
1154                             "EEPROM freq3 len=%d\n", option_len);
1155
1156                         upgt_eeprom_parse_freq3(sc, eeprom_option->data,
1157                             option_len);
1158                         break;
1159                 case UPGT_EEPROM_TYPE_FREQ4:
1160                         DPRINTF(sc, UPGT_DEBUG_FW,
1161                             "EEPROM freq4 len=%d\n", option_len);
1162
1163                         upgt_eeprom_parse_freq4(sc, eeprom_option->data,
1164                             option_len);
1165                         break;
1166                 case UPGT_EEPROM_TYPE_FREQ5:
1167                         DPRINTF(sc, UPGT_DEBUG_FW,
1168                             "EEPROM freq5 len=%d\n", option_len);
1169                         break;
1170                 case UPGT_EEPROM_TYPE_FREQ6:
1171                         DPRINTF(sc, UPGT_DEBUG_FW,
1172                             "EEPROM freq6 len=%d\n", option_len);
1173
1174                         upgt_eeprom_parse_freq6(sc, eeprom_option->data,
1175                             option_len);
1176                         break;
1177                 case UPGT_EEPROM_TYPE_END:
1178                         DPRINTF(sc, UPGT_DEBUG_FW,
1179                             "EEPROM end len=%d\n", option_len);
1180                         option_end = 1;
1181                         break;
1182                 case UPGT_EEPROM_TYPE_OFF:
1183                         DPRINTF(sc, UPGT_DEBUG_FW,
1184                             "%s: EEPROM off without end option\n", __func__);
1185                         return (EIO);
1186                 default:
1187                         DPRINTF(sc, UPGT_DEBUG_FW,
1188                             "EEPROM unknown type 0x%04x len=%d\n",
1189                             option_type, option_len);
1190                         break;
1191                 }
1192
1193                 /* jump to next EEPROM option */
1194                 eeprom_option = (struct upgt_eeprom_option *)
1195                     (eeprom_option->data + option_len);
1196         }
1197
1198         return (0);
1199 }
1200
1201 static void
1202 upgt_eeprom_parse_freq3(struct upgt_softc *sc, uint8_t *data, int len)
1203 {
1204         struct upgt_eeprom_freq3_header *freq3_header;
1205         struct upgt_lmac_freq3 *freq3;
1206         int i, elements, flags;
1207         unsigned channel;
1208
1209         freq3_header = (struct upgt_eeprom_freq3_header *)data;
1210         freq3 = (struct upgt_lmac_freq3 *)(freq3_header + 1);
1211
1212         flags = freq3_header->flags;
1213         elements = freq3_header->elements;
1214
1215         DPRINTF(sc, UPGT_DEBUG_FW, "flags=0x%02x elements=%d\n",
1216             flags, elements);
1217
1218         for (i = 0; i < elements; i++) {
1219                 channel = ieee80211_mhz2ieee(le16toh(freq3[i].freq), 0);
1220                 if (!(channel >= 0 && channel < IEEE80211_CHAN_MAX))
1221                         continue;
1222
1223                 sc->sc_eeprom_freq3[channel] = freq3[i];
1224
1225                 DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
1226                     le16toh(sc->sc_eeprom_freq3[channel].freq), channel);
1227         }
1228 }
1229
1230 void
1231 upgt_eeprom_parse_freq4(struct upgt_softc *sc, uint8_t *data, int len)
1232 {
1233         struct upgt_eeprom_freq4_header *freq4_header;
1234         struct upgt_eeprom_freq4_1 *freq4_1;
1235         struct upgt_eeprom_freq4_2 *freq4_2;
1236         int i, j, elements, settings, flags;
1237         unsigned channel;
1238
1239         freq4_header = (struct upgt_eeprom_freq4_header *)data;
1240         freq4_1 = (struct upgt_eeprom_freq4_1 *)(freq4_header + 1);
1241         flags = freq4_header->flags;
1242         elements = freq4_header->elements;
1243         settings = freq4_header->settings;
1244
1245         /* we need this value later */
1246         sc->sc_eeprom_freq6_settings = freq4_header->settings;
1247
1248         DPRINTF(sc, UPGT_DEBUG_FW, "flags=0x%02x elements=%d settings=%d\n",
1249             flags, elements, settings);
1250
1251         for (i = 0; i < elements; i++) {
1252                 channel = ieee80211_mhz2ieee(le16toh(freq4_1[i].freq), 0);
1253                 if (!(channel >= 0 && channel < IEEE80211_CHAN_MAX))
1254                         continue;
1255
1256                 freq4_2 = (struct upgt_eeprom_freq4_2 *)freq4_1[i].data;
1257                 for (j = 0; j < settings; j++) {
1258                         sc->sc_eeprom_freq4[channel][j].cmd = freq4_2[j];
1259                         sc->sc_eeprom_freq4[channel][j].pad = 0;
1260                 }
1261
1262                 DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
1263                     le16toh(freq4_1[i].freq), channel);
1264         }
1265 }
1266
1267 void
1268 upgt_eeprom_parse_freq6(struct upgt_softc *sc, uint8_t *data, int len)
1269 {
1270         struct upgt_lmac_freq6 *freq6;
1271         int i, elements;
1272         unsigned channel;
1273
1274         freq6 = (struct upgt_lmac_freq6 *)data;
1275         elements = len / sizeof(struct upgt_lmac_freq6);
1276
1277         DPRINTF(sc, UPGT_DEBUG_FW, "elements=%d\n", elements);
1278
1279         for (i = 0; i < elements; i++) {
1280                 channel = ieee80211_mhz2ieee(le16toh(freq6[i].freq), 0);
1281                 if (!(channel >= 0 && channel < IEEE80211_CHAN_MAX))
1282                         continue;
1283
1284                 sc->sc_eeprom_freq6[channel] = freq6[i];
1285
1286                 DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
1287                     le16toh(sc->sc_eeprom_freq6[channel].freq), channel);
1288         }
1289 }
1290
1291 static void
1292 upgt_eeprom_parse_hwrx(struct upgt_softc *sc, uint8_t *data)
1293 {
1294         struct upgt_eeprom_option_hwrx *option_hwrx;
1295
1296         option_hwrx = (struct upgt_eeprom_option_hwrx *)data;
1297
1298         sc->sc_eeprom_hwrx = option_hwrx->rxfilter - UPGT_EEPROM_RX_CONST;
1299
1300         DPRINTF(sc, UPGT_DEBUG_FW, "hwrx option value=0x%04x\n",
1301             sc->sc_eeprom_hwrx);
1302 }
1303
1304 static int
1305 upgt_eeprom_read(struct upgt_softc *sc)
1306 {
1307         struct upgt_data *data_cmd;
1308         struct upgt_lmac_mem *mem;
1309         struct upgt_lmac_eeprom *eeprom;
1310         int block, error, offset;
1311
1312         UPGT_LOCK(sc);
1313         usb_pause_mtx(&sc->sc_mtx, 100);
1314
1315         offset = 0;
1316         block = UPGT_EEPROM_BLOCK_SIZE;
1317         while (offset < UPGT_EEPROM_SIZE) {
1318                 DPRINTF(sc, UPGT_DEBUG_FW,
1319                     "request EEPROM block (offset=%d, len=%d)\n", offset, block);
1320
1321                 data_cmd = upgt_getbuf(sc);
1322                 if (data_cmd == NULL) {
1323                         UPGT_UNLOCK(sc);
1324                         return (ENOBUFS);
1325                 }
1326
1327                 /*
1328                  * Transmit the URB containing the CMD data.
1329                  */
1330                 bzero(data_cmd->buf, MCLBYTES);
1331
1332                 mem = (struct upgt_lmac_mem *)data_cmd->buf;
1333                 mem->addr = htole32(sc->sc_memaddr_frame_start +
1334                     UPGT_MEMSIZE_FRAME_HEAD);
1335
1336                 eeprom = (struct upgt_lmac_eeprom *)(mem + 1);
1337                 eeprom->header1.flags = 0;
1338                 eeprom->header1.type = UPGT_H1_TYPE_CTRL;
1339                 eeprom->header1.len = htole16((
1340                     sizeof(struct upgt_lmac_eeprom) -
1341                     sizeof(struct upgt_lmac_header)) + block);
1342
1343                 eeprom->header2.reqid = htole32(sc->sc_memaddr_frame_start);
1344                 eeprom->header2.type = htole16(UPGT_H2_TYPE_EEPROM);
1345                 eeprom->header2.flags = 0;
1346
1347                 eeprom->offset = htole16(offset);
1348                 eeprom->len = htole16(block);
1349
1350                 data_cmd->buflen = sizeof(*mem) + sizeof(*eeprom) + block;
1351
1352                 mem->chksum = upgt_chksum_le((uint32_t *)eeprom,
1353                     data_cmd->buflen - sizeof(*mem));
1354                 upgt_bulk_tx(sc, data_cmd);
1355
1356                 error = mtx_sleep(sc, &sc->sc_mtx, 0, "eeprom_request", hz);
1357                 if (error != 0) {
1358                         device_printf(sc->sc_dev,
1359                             "timeout while waiting for EEPROM data\n");
1360                         UPGT_UNLOCK(sc);
1361                         return (EIO);
1362                 }
1363
1364                 offset += block;
1365                 if (UPGT_EEPROM_SIZE - offset < block)
1366                         block = UPGT_EEPROM_SIZE - offset;
1367         }
1368
1369         UPGT_UNLOCK(sc);
1370         return (0);
1371 }
1372
1373 /*
1374  * When a rx data came in the function returns a mbuf and a rssi values.
1375  */
1376 static struct mbuf *
1377 upgt_rxeof(struct usb_xfer *xfer, struct upgt_data *data, int *rssi)
1378 {
1379         struct mbuf *m = NULL;
1380         struct upgt_softc *sc = usbd_xfer_softc(xfer);
1381         struct upgt_lmac_header *header;
1382         struct upgt_lmac_eeprom *eeprom;
1383         uint8_t h1_type;
1384         uint16_t h2_type;
1385         int actlen, sumlen;
1386
1387         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
1388
1389         UPGT_ASSERT_LOCKED(sc);
1390
1391         if (actlen < 1)
1392                 return (NULL);
1393
1394         /* Check only at the very beginning.  */
1395         if (!(sc->sc_flags & UPGT_FLAG_FWLOADED) &&
1396             (memcmp(data->buf, "OK", 2) == 0)) {
1397                 sc->sc_flags |= UPGT_FLAG_FWLOADED;
1398                 wakeup_one(sc);
1399                 return (NULL);
1400         }
1401
1402         if (actlen < UPGT_RX_MINSZ)
1403                 return (NULL);
1404
1405         /*
1406          * Check what type of frame came in.
1407          */
1408         header = (struct upgt_lmac_header *)(data->buf + 4);
1409
1410         h1_type = header->header1.type;
1411         h2_type = le16toh(header->header2.type);
1412
1413         if (h1_type == UPGT_H1_TYPE_CTRL && h2_type == UPGT_H2_TYPE_EEPROM) {
1414                 eeprom = (struct upgt_lmac_eeprom *)(data->buf + 4);
1415                 uint16_t eeprom_offset = le16toh(eeprom->offset);
1416                 uint16_t eeprom_len = le16toh(eeprom->len);
1417
1418                 DPRINTF(sc, UPGT_DEBUG_FW,
1419                     "received EEPROM block (offset=%d, len=%d)\n",
1420                     eeprom_offset, eeprom_len);
1421
1422                 bcopy(data->buf + sizeof(struct upgt_lmac_eeprom) + 4,
1423                         sc->sc_eeprom + eeprom_offset, eeprom_len);
1424
1425                 /* EEPROM data has arrived in time, wakeup.  */
1426                 wakeup(sc);
1427         } else if (h1_type == UPGT_H1_TYPE_CTRL &&
1428             h2_type == UPGT_H2_TYPE_TX_DONE) {
1429                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: received 802.11 TX done\n",
1430                     __func__);
1431                 upgt_tx_done(sc, data->buf + 4);
1432         } else if (h1_type == UPGT_H1_TYPE_RX_DATA ||
1433             h1_type == UPGT_H1_TYPE_RX_DATA_MGMT) {
1434                 DPRINTF(sc, UPGT_DEBUG_RECV, "%s: received 802.11 RX data\n",
1435                     __func__);
1436                 m = upgt_rx(sc, data->buf + 4, le16toh(header->header1.len),
1437                     rssi);
1438         } else if (h1_type == UPGT_H1_TYPE_CTRL &&
1439             h2_type == UPGT_H2_TYPE_STATS) {
1440                 DPRINTF(sc, UPGT_DEBUG_STAT, "%s: received statistic data\n",
1441                     __func__);
1442                 /* TODO: what could we do with the statistic data? */
1443         } else {
1444                 /* ignore unknown frame types */
1445                 DPRINTF(sc, UPGT_DEBUG_INTR,
1446                     "received unknown frame type 0x%02x\n",
1447                     header->header1.type);
1448         }
1449         return (m);
1450 }
1451
1452 /*
1453  * The firmware awaits a checksum for each frame we send to it.
1454  * The algorithm used therefor is uncommon but somehow similar to CRC32.
1455  */
1456 static uint32_t
1457 upgt_chksum_le(const uint32_t *buf, size_t size)
1458 {
1459         int i;
1460         uint32_t crc = 0;
1461
1462         for (i = 0; i < size; i += sizeof(uint32_t)) {
1463                 crc = htole32(crc ^ *buf++);
1464                 crc = htole32((crc >> 5) ^ (crc << 3));
1465         }
1466
1467         return (crc);
1468 }
1469
1470 static struct mbuf *
1471 upgt_rx(struct upgt_softc *sc, uint8_t *data, int pkglen, int *rssi)
1472 {
1473         struct ifnet *ifp = sc->sc_ifp;
1474         struct ieee80211com *ic = ifp->if_l2com;
1475         struct upgt_lmac_rx_desc *rxdesc;
1476         struct mbuf *m;
1477
1478         /*
1479          * don't pass packets to the ieee80211 framework if the driver isn't
1480          * RUNNING.
1481          */
1482         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
1483                 return (NULL);
1484
1485         /* access RX packet descriptor */
1486         rxdesc = (struct upgt_lmac_rx_desc *)data;
1487
1488         /* create mbuf which is suitable for strict alignment archs */
1489         KASSERT((pkglen + ETHER_ALIGN) < MCLBYTES,
1490             ("A current mbuf storage is small (%d)", pkglen + ETHER_ALIGN));
1491         m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1492         if (m == NULL) {
1493                 device_printf(sc->sc_dev, "could not create RX mbuf\n");
1494                 return (NULL);
1495         }
1496         m_adj(m, ETHER_ALIGN);
1497         bcopy(rxdesc->data, mtod(m, char *), pkglen);
1498         /* trim FCS */
1499         m->m_len = m->m_pkthdr.len = pkglen - IEEE80211_CRC_LEN;
1500         m->m_pkthdr.rcvif = ifp;
1501
1502         if (ieee80211_radiotap_active(ic)) {
1503                 struct upgt_rx_radiotap_header *tap = &sc->sc_rxtap;
1504
1505                 tap->wr_flags = 0;
1506                 tap->wr_rate = upgt_rx_rate(sc, rxdesc->rate);
1507                 tap->wr_antsignal = rxdesc->rssi;
1508         }
1509         ifp->if_ipackets++;
1510
1511         DPRINTF(sc, UPGT_DEBUG_RX_PROC, "%s: RX done\n", __func__);
1512         *rssi = rxdesc->rssi;
1513         return (m);
1514 }
1515
1516 static uint8_t
1517 upgt_rx_rate(struct upgt_softc *sc, const int rate)
1518 {
1519         struct ifnet *ifp = sc->sc_ifp;
1520         struct ieee80211com *ic = ifp->if_l2com;
1521         static const uint8_t cck_upgt2rate[4] = { 2, 4, 11, 22 };
1522         static const uint8_t ofdm_upgt2rate[12] =
1523             { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 };
1524
1525         if (ic->ic_curmode == IEEE80211_MODE_11B &&
1526             !(rate < 0 || rate > 3))
1527                 return cck_upgt2rate[rate & 0xf];
1528
1529         if (ic->ic_curmode == IEEE80211_MODE_11G &&
1530             !(rate < 0 || rate > 11))
1531                 return ofdm_upgt2rate[rate & 0xf];
1532
1533         return (0);
1534 }
1535
1536 static void
1537 upgt_tx_done(struct upgt_softc *sc, uint8_t *data)
1538 {
1539         struct ifnet *ifp = sc->sc_ifp;
1540         struct upgt_lmac_tx_done_desc *desc;
1541         int i, freed = 0;
1542
1543         UPGT_ASSERT_LOCKED(sc);
1544
1545         desc = (struct upgt_lmac_tx_done_desc *)data;
1546
1547         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
1548                 struct upgt_data *data_tx = &sc->sc_tx_data[i];
1549
1550                 if (data_tx->addr == le32toh(desc->header2.reqid)) {
1551                         upgt_mem_free(sc, data_tx->addr);
1552                         data_tx->ni = NULL;
1553                         data_tx->addr = 0;
1554                         data_tx->m = NULL;
1555                         data_tx->use = 0;
1556
1557                         DPRINTF(sc, UPGT_DEBUG_TX_PROC,
1558                             "TX done: memaddr=0x%08x, status=0x%04x, rssi=%d, ",
1559                             le32toh(desc->header2.reqid),
1560                             le16toh(desc->status), le16toh(desc->rssi));
1561                         DPRINTF(sc, UPGT_DEBUG_TX_PROC, "seq=%d\n",
1562                             le16toh(desc->seq));
1563
1564                         freed++;
1565                 }
1566         }
1567
1568         if (freed != 0) {
1569                 sc->sc_tx_timer = 0;
1570                 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1571                 UPGT_UNLOCK(sc);
1572                 upgt_start(ifp);
1573                 UPGT_LOCK(sc);
1574         }
1575 }
1576
1577 static void
1578 upgt_mem_free(struct upgt_softc *sc, uint32_t addr)
1579 {
1580         int i;
1581
1582         for (i = 0; i < sc->sc_memory.pages; i++) {
1583                 if (sc->sc_memory.page[i].addr == addr) {
1584                         sc->sc_memory.page[i].used = 0;
1585                         return;
1586                 }
1587         }
1588
1589         device_printf(sc->sc_dev,
1590             "could not free memory address 0x%08x\n", addr);
1591 }
1592
1593 static int
1594 upgt_fw_load(struct upgt_softc *sc)
1595 {
1596         const struct firmware *fw;
1597         struct upgt_data *data_cmd;
1598         struct upgt_fw_x2_header *x2;
1599         char start_fwload_cmd[] = { 0x3c, 0x0d };
1600         int error = 0, offset, bsize, n;
1601         uint32_t crc32;
1602
1603         fw = firmware_get(upgt_fwname);
1604         if (fw == NULL) {
1605                 device_printf(sc->sc_dev, "could not read microcode %s\n",
1606                     upgt_fwname);
1607                 return (EIO);
1608         }
1609
1610         UPGT_LOCK(sc);
1611
1612         /* send firmware start load command */
1613         data_cmd = upgt_getbuf(sc);
1614         if (data_cmd == NULL) {
1615                 error = ENOBUFS;
1616                 goto fail;
1617         }
1618         data_cmd->buflen = sizeof(start_fwload_cmd);
1619         bcopy(start_fwload_cmd, data_cmd->buf, data_cmd->buflen);
1620         upgt_bulk_tx(sc, data_cmd);
1621
1622         /* send X2 header */
1623         data_cmd = upgt_getbuf(sc);
1624         if (data_cmd == NULL) {
1625                 error = ENOBUFS;
1626                 goto fail;
1627         }
1628         data_cmd->buflen = sizeof(struct upgt_fw_x2_header);
1629         x2 = (struct upgt_fw_x2_header *)data_cmd->buf;
1630         bcopy(UPGT_X2_SIGNATURE, x2->signature, UPGT_X2_SIGNATURE_SIZE);
1631         x2->startaddr = htole32(UPGT_MEMADDR_FIRMWARE_START);
1632         x2->len = htole32(fw->datasize);
1633         x2->crc = upgt_crc32_le((uint8_t *)data_cmd->buf +
1634             UPGT_X2_SIGNATURE_SIZE,
1635             sizeof(struct upgt_fw_x2_header) - UPGT_X2_SIGNATURE_SIZE -
1636             sizeof(uint32_t));
1637         upgt_bulk_tx(sc, data_cmd);
1638
1639         /* download firmware */
1640         for (offset = 0; offset < fw->datasize; offset += bsize) {
1641                 if (fw->datasize - offset > UPGT_FW_BLOCK_SIZE)
1642                         bsize = UPGT_FW_BLOCK_SIZE;
1643                 else
1644                         bsize = fw->datasize - offset;
1645
1646                 data_cmd = upgt_getbuf(sc);
1647                 if (data_cmd == NULL) {
1648                         error = ENOBUFS;
1649                         goto fail;
1650                 }
1651                 n = upgt_fw_copy((const uint8_t *)fw->data + offset,
1652                     data_cmd->buf, bsize);
1653                 data_cmd->buflen = bsize;
1654                 upgt_bulk_tx(sc, data_cmd);
1655
1656                 DPRINTF(sc, UPGT_DEBUG_FW, "FW offset=%d, read=%d, sent=%d\n",
1657                     offset, n, bsize);
1658                 bsize = n;
1659         }
1660         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware downloaded\n", __func__);
1661
1662         /* load firmware */
1663         data_cmd = upgt_getbuf(sc);
1664         if (data_cmd == NULL) {
1665                 error = ENOBUFS;
1666                 goto fail;
1667         }
1668         crc32 = upgt_crc32_le(fw->data, fw->datasize);
1669         *((uint32_t *)(data_cmd->buf)    ) = crc32;
1670         *((uint8_t  *)(data_cmd->buf) + 4) = 'g';
1671         *((uint8_t  *)(data_cmd->buf) + 5) = '\r';
1672         data_cmd->buflen = 6;
1673         upgt_bulk_tx(sc, data_cmd);
1674
1675         /* waiting 'OK' response.  */
1676         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_RX]);
1677         error = mtx_sleep(sc, &sc->sc_mtx, 0, "upgtfw", 2 * hz);
1678         if (error != 0) {
1679                 device_printf(sc->sc_dev, "firmware load failed\n");
1680                 error = EIO;
1681         }
1682
1683         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware loaded\n", __func__);
1684 fail:
1685         UPGT_UNLOCK(sc);
1686         firmware_put(fw, FIRMWARE_UNLOAD);
1687         return (error);
1688 }
1689
1690 static uint32_t
1691 upgt_crc32_le(const void *buf, size_t size)
1692 {
1693         uint32_t crc;
1694
1695         crc = ether_crc32_le(buf, size);
1696
1697         /* apply final XOR value as common for CRC-32 */
1698         crc = htole32(crc ^ 0xffffffffU);
1699
1700         return (crc);
1701 }
1702
1703 /*
1704  * While copying the version 2 firmware, we need to replace two characters:
1705  *
1706  * 0x7e -> 0x7d 0x5e
1707  * 0x7d -> 0x7d 0x5d
1708  */
1709 static int
1710 upgt_fw_copy(const uint8_t *src, char *dst, int size)
1711 {
1712         int i, j;
1713
1714         for (i = 0, j = 0; i < size && j < size; i++) {
1715                 switch (src[i]) {
1716                 case 0x7e:
1717                         dst[j] = 0x7d;
1718                         j++;
1719                         dst[j] = 0x5e;
1720                         j++;
1721                         break;
1722                 case 0x7d:
1723                         dst[j] = 0x7d;
1724                         j++;
1725                         dst[j] = 0x5d;
1726                         j++;
1727                         break;
1728                 default:
1729                         dst[j] = src[i];
1730                         j++;
1731                         break;
1732                 }
1733         }
1734
1735         return (i);
1736 }
1737
1738 static int
1739 upgt_mem_init(struct upgt_softc *sc)
1740 {
1741         int i;
1742
1743         for (i = 0; i < UPGT_MEMORY_MAX_PAGES; i++) {
1744                 sc->sc_memory.page[i].used = 0;
1745
1746                 if (i == 0) {
1747                         /*
1748                          * The first memory page is always reserved for
1749                          * command data.
1750                          */
1751                         sc->sc_memory.page[i].addr =
1752                             sc->sc_memaddr_frame_start + MCLBYTES;
1753                 } else {
1754                         sc->sc_memory.page[i].addr =
1755                             sc->sc_memory.page[i - 1].addr + MCLBYTES;
1756                 }
1757
1758                 if (sc->sc_memory.page[i].addr + MCLBYTES >=
1759                     sc->sc_memaddr_frame_end)
1760                         break;
1761
1762                 DPRINTF(sc, UPGT_DEBUG_FW, "memory address page %d=0x%08x\n",
1763                     i, sc->sc_memory.page[i].addr);
1764         }
1765
1766         sc->sc_memory.pages = i;
1767
1768         DPRINTF(sc, UPGT_DEBUG_FW, "memory pages=%d\n", sc->sc_memory.pages);
1769         return (0);
1770 }
1771
1772 static int
1773 upgt_fw_verify(struct upgt_softc *sc)
1774 {
1775         const struct firmware *fw;
1776         const struct upgt_fw_bra_option *bra_opt;
1777         const struct upgt_fw_bra_descr *descr;
1778         const uint8_t *p;
1779         const uint32_t *uc;
1780         uint32_t bra_option_type, bra_option_len;
1781         int offset, bra_end = 0, error = 0;
1782
1783         fw = firmware_get(upgt_fwname);
1784         if (fw == NULL) {
1785                 device_printf(sc->sc_dev, "could not read microcode %s\n",
1786                     upgt_fwname);
1787                 return EIO;
1788         }
1789
1790         /*
1791          * Seek to beginning of Boot Record Area (BRA).
1792          */
1793         for (offset = 0; offset < fw->datasize; offset += sizeof(*uc)) {
1794                 uc = (const uint32_t *)((const uint8_t *)fw->data + offset);
1795                 if (*uc == 0)
1796                         break;
1797         }
1798         for (; offset < fw->datasize; offset += sizeof(*uc)) {
1799                 uc = (const uint32_t *)((const uint8_t *)fw->data + offset);
1800                 if (*uc != 0)
1801                         break;
1802         }
1803         if (offset == fw->datasize) {
1804                 device_printf(sc->sc_dev,
1805                     "firmware Boot Record Area not found\n");
1806                 error = EIO;
1807                 goto fail;
1808         }
1809
1810         DPRINTF(sc, UPGT_DEBUG_FW,
1811             "firmware Boot Record Area found at offset %d\n", offset);
1812
1813         /*
1814          * Parse Boot Record Area (BRA) options.
1815          */
1816         while (offset < fw->datasize && bra_end == 0) {
1817                 /* get current BRA option */
1818                 p = (const uint8_t *)fw->data + offset;
1819                 bra_opt = (const struct upgt_fw_bra_option *)p;
1820                 bra_option_type = le32toh(bra_opt->type);
1821                 bra_option_len = le32toh(bra_opt->len) * sizeof(*uc);
1822
1823                 switch (bra_option_type) {
1824                 case UPGT_BRA_TYPE_FW:
1825                         DPRINTF(sc, UPGT_DEBUG_FW, "UPGT_BRA_TYPE_FW len=%d\n",
1826                             bra_option_len);
1827
1828                         if (bra_option_len != UPGT_BRA_FWTYPE_SIZE) {
1829                                 device_printf(sc->sc_dev,
1830                                     "wrong UPGT_BRA_TYPE_FW len\n");
1831                                 error = EIO;
1832                                 goto fail;
1833                         }
1834                         if (memcmp(UPGT_BRA_FWTYPE_LM86, bra_opt->data,
1835                             bra_option_len) == 0) {
1836                                 sc->sc_fw_type = UPGT_FWTYPE_LM86;
1837                                 break;
1838                         }
1839                         if (memcmp(UPGT_BRA_FWTYPE_LM87, bra_opt->data,
1840                             bra_option_len) == 0) {
1841                                 sc->sc_fw_type = UPGT_FWTYPE_LM87;
1842                                 break;
1843                         }
1844                         device_printf(sc->sc_dev,
1845                             "unsupported firmware type\n");
1846                         error = EIO;
1847                         goto fail;
1848                 case UPGT_BRA_TYPE_VERSION:
1849                         DPRINTF(sc, UPGT_DEBUG_FW,
1850                             "UPGT_BRA_TYPE_VERSION len=%d\n", bra_option_len);
1851                         break;
1852                 case UPGT_BRA_TYPE_DEPIF:
1853                         DPRINTF(sc, UPGT_DEBUG_FW,
1854                             "UPGT_BRA_TYPE_DEPIF len=%d\n", bra_option_len);
1855                         break;
1856                 case UPGT_BRA_TYPE_EXPIF:
1857                         DPRINTF(sc, UPGT_DEBUG_FW,
1858                             "UPGT_BRA_TYPE_EXPIF len=%d\n", bra_option_len);
1859                         break;
1860                 case UPGT_BRA_TYPE_DESCR:
1861                         DPRINTF(sc, UPGT_DEBUG_FW,
1862                             "UPGT_BRA_TYPE_DESCR len=%d\n", bra_option_len);
1863
1864                         descr = (const struct upgt_fw_bra_descr *)bra_opt->data;
1865
1866                         sc->sc_memaddr_frame_start =
1867                             le32toh(descr->memaddr_space_start);
1868                         sc->sc_memaddr_frame_end =
1869                             le32toh(descr->memaddr_space_end);
1870
1871                         DPRINTF(sc, UPGT_DEBUG_FW,
1872                             "memory address space start=0x%08x\n",
1873                             sc->sc_memaddr_frame_start);
1874                         DPRINTF(sc, UPGT_DEBUG_FW,
1875                             "memory address space end=0x%08x\n",
1876                             sc->sc_memaddr_frame_end);
1877                         break;
1878                 case UPGT_BRA_TYPE_END:
1879                         DPRINTF(sc, UPGT_DEBUG_FW, "UPGT_BRA_TYPE_END len=%d\n",
1880                             bra_option_len);
1881                         bra_end = 1;
1882                         break;
1883                 default:
1884                         DPRINTF(sc, UPGT_DEBUG_FW, "unknown BRA option len=%d\n",
1885                             bra_option_len);
1886                         error = EIO;
1887                         goto fail;
1888                 }
1889
1890                 /* jump to next BRA option */
1891                 offset += sizeof(struct upgt_fw_bra_option) + bra_option_len;
1892         }
1893
1894         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware verified", __func__);
1895 fail:
1896         firmware_put(fw, FIRMWARE_UNLOAD);
1897         return (error);
1898 }
1899
1900 static void
1901 upgt_bulk_tx(struct upgt_softc *sc, struct upgt_data *data)
1902 {
1903
1904         UPGT_ASSERT_LOCKED(sc);
1905
1906         STAILQ_INSERT_TAIL(&sc->sc_tx_pending, data, next);
1907         UPGT_STAT_INC(sc, st_tx_pending);
1908         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_TX]);
1909 }
1910
1911 static int
1912 upgt_device_reset(struct upgt_softc *sc)
1913 {
1914         struct upgt_data *data;
1915         char init_cmd[] = { 0x7e, 0x7e, 0x7e, 0x7e };
1916
1917         UPGT_LOCK(sc);
1918
1919         data = upgt_getbuf(sc);
1920         if (data == NULL) {
1921                 UPGT_UNLOCK(sc);
1922                 return (ENOBUFS);
1923         }
1924         bcopy(init_cmd, data->buf, sizeof(init_cmd));
1925         data->buflen = sizeof(init_cmd);
1926         upgt_bulk_tx(sc, data);
1927         usb_pause_mtx(&sc->sc_mtx, 100);
1928
1929         UPGT_UNLOCK(sc);
1930         DPRINTF(sc, UPGT_DEBUG_FW, "%s: device initialized\n", __func__);
1931         return (0);
1932 }
1933
1934 static int
1935 upgt_alloc_tx(struct upgt_softc *sc)
1936 {
1937         int i;
1938
1939         STAILQ_INIT(&sc->sc_tx_active);
1940         STAILQ_INIT(&sc->sc_tx_inactive);
1941         STAILQ_INIT(&sc->sc_tx_pending);
1942
1943         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
1944                 struct upgt_data *data = &sc->sc_tx_data[i];
1945
1946                 data->buf = malloc(MCLBYTES, M_USBDEV, M_NOWAIT | M_ZERO);
1947                 if (data->buf == NULL) {
1948                         device_printf(sc->sc_dev,
1949                             "could not allocate TX buffer\n");
1950                         return (ENOMEM);
1951                 }
1952                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
1953                 UPGT_STAT_INC(sc, st_tx_inactive);
1954         }
1955
1956         return (0);
1957 }
1958
1959 static int
1960 upgt_alloc_rx(struct upgt_softc *sc)
1961 {
1962         int i;
1963
1964         STAILQ_INIT(&sc->sc_rx_active);
1965         STAILQ_INIT(&sc->sc_rx_inactive);
1966
1967         for (i = 0; i < UPGT_RX_MAXCOUNT; i++) {
1968                 struct upgt_data *data = &sc->sc_rx_data[i];
1969
1970                 data->buf = malloc(MCLBYTES, M_USBDEV, M_NOWAIT | M_ZERO);
1971                 if (data->buf == NULL) {
1972                         device_printf(sc->sc_dev,
1973                             "could not allocate RX buffer\n");
1974                         return (ENOMEM);
1975                 }
1976                 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
1977         }
1978
1979         return (0);
1980 }
1981
1982 static int
1983 upgt_detach(device_t dev)
1984 {
1985         struct upgt_softc *sc = device_get_softc(dev);
1986         struct ifnet *ifp = sc->sc_ifp;
1987         struct ieee80211com *ic = ifp->if_l2com;
1988
1989         if (!device_is_attached(dev))
1990                 return 0;
1991
1992         upgt_stop(sc);
1993
1994         callout_drain(&sc->sc_led_ch);
1995         callout_drain(&sc->sc_watchdog_ch);
1996
1997         usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
1998         ieee80211_ifdetach(ic);
1999         upgt_free_rx(sc);
2000         upgt_free_tx(sc);
2001
2002         if_free(ifp);
2003         mtx_destroy(&sc->sc_mtx);
2004
2005         return (0);
2006 }
2007
2008 static void
2009 upgt_free_rx(struct upgt_softc *sc)
2010 {
2011         int i;
2012
2013         for (i = 0; i < UPGT_RX_MAXCOUNT; i++) {
2014                 struct upgt_data *data = &sc->sc_rx_data[i];
2015
2016                 free(data->buf, M_USBDEV);
2017                 data->ni = NULL;
2018         }
2019 }
2020
2021 static void
2022 upgt_free_tx(struct upgt_softc *sc)
2023 {
2024         int i;
2025
2026         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
2027                 struct upgt_data *data = &sc->sc_tx_data[i];
2028
2029                 free(data->buf, M_USBDEV);
2030                 data->ni = NULL;
2031         }
2032 }
2033
2034 static void
2035 upgt_abort_xfers_locked(struct upgt_softc *sc)
2036 {
2037         int i;
2038
2039         UPGT_ASSERT_LOCKED(sc);
2040         /* abort any pending transfers */
2041         for (i = 0; i < UPGT_N_XFERS; i++)
2042                 usbd_transfer_stop(sc->sc_xfer[i]);
2043 }
2044
2045 static void
2046 upgt_abort_xfers(struct upgt_softc *sc)
2047 {
2048
2049         UPGT_LOCK(sc);
2050         upgt_abort_xfers_locked(sc);
2051         UPGT_UNLOCK(sc);
2052 }
2053
2054 #define UPGT_SYSCTL_STAT_ADD32(c, h, n, p, d)   \
2055             SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
2056
2057 static void
2058 upgt_sysctl_node(struct upgt_softc *sc)
2059 {
2060         struct sysctl_ctx_list *ctx;
2061         struct sysctl_oid_list *child;
2062         struct sysctl_oid *tree;
2063         struct upgt_stat *stats;
2064
2065         stats = &sc->sc_stat;
2066         ctx = device_get_sysctl_ctx(sc->sc_dev);
2067         child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->sc_dev));
2068
2069         tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
2070             NULL, "UPGT statistics");
2071         child = SYSCTL_CHILDREN(tree);
2072         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_active",
2073             &stats->st_tx_active, "Active numbers in TX queue");
2074         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_inactive",
2075             &stats->st_tx_inactive, "Inactive numbers in TX queue");
2076         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_pending",
2077             &stats->st_tx_pending, "Pending numbers in TX queue");
2078 }
2079
2080 #undef UPGT_SYSCTL_STAT_ADD32
2081
2082 static struct upgt_data *
2083 _upgt_getbuf(struct upgt_softc *sc)
2084 {
2085         struct upgt_data *bf;
2086
2087         bf = STAILQ_FIRST(&sc->sc_tx_inactive);
2088         if (bf != NULL) {
2089                 STAILQ_REMOVE_HEAD(&sc->sc_tx_inactive, next);
2090                 UPGT_STAT_DEC(sc, st_tx_inactive);
2091         } else
2092                 bf = NULL;
2093         if (bf == NULL)
2094                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: %s\n", __func__,
2095                     "out of xmit buffers");
2096         return (bf);
2097 }
2098
2099 static struct upgt_data *
2100 upgt_getbuf(struct upgt_softc *sc)
2101 {
2102         struct upgt_data *bf;
2103
2104         UPGT_ASSERT_LOCKED(sc);
2105
2106         bf = _upgt_getbuf(sc);
2107         if (bf == NULL) {
2108                 struct ifnet *ifp = sc->sc_ifp;
2109
2110                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: stop queue\n", __func__);
2111                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2112         }
2113
2114         return (bf);
2115 }
2116
2117 static struct upgt_data *
2118 upgt_gettxbuf(struct upgt_softc *sc)
2119 {
2120         struct upgt_data *bf;
2121
2122         UPGT_ASSERT_LOCKED(sc);
2123
2124         bf = upgt_getbuf(sc);
2125         if (bf == NULL)
2126                 return (NULL);
2127
2128         bf->addr = upgt_mem_alloc(sc);
2129         if (bf->addr == 0) {
2130                 struct ifnet *ifp = sc->sc_ifp;
2131
2132                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: no free prism memory!\n",
2133                     __func__);
2134                 STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, bf, next);
2135                 UPGT_STAT_INC(sc, st_tx_inactive);
2136                 if (!(ifp->if_drv_flags & IFF_DRV_OACTIVE))
2137                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2138                 return (NULL);
2139         }
2140         return (bf);
2141 }
2142
2143 static int
2144 upgt_tx_start(struct upgt_softc *sc, struct mbuf *m, struct ieee80211_node *ni,
2145     struct upgt_data *data)
2146 {
2147         struct ieee80211vap *vap = ni->ni_vap;
2148         int error = 0, len;
2149         struct ieee80211_frame *wh;
2150         struct ieee80211_key *k;
2151         struct ifnet *ifp = sc->sc_ifp;
2152         struct upgt_lmac_mem *mem;
2153         struct upgt_lmac_tx_desc *txdesc;
2154
2155         UPGT_ASSERT_LOCKED(sc);
2156
2157         upgt_set_led(sc, UPGT_LED_BLINK);
2158
2159         /*
2160          * Software crypto.
2161          */
2162         wh = mtod(m, struct ieee80211_frame *);
2163         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
2164                 k = ieee80211_crypto_encap(ni, m);
2165                 if (k == NULL) {
2166                         device_printf(sc->sc_dev,
2167                             "ieee80211_crypto_encap returns NULL.\n");
2168                         error = EIO;
2169                         goto done;
2170                 }
2171
2172                 /* in case packet header moved, reset pointer */
2173                 wh = mtod(m, struct ieee80211_frame *);
2174         }
2175
2176         /* Transmit the URB containing the TX data.  */
2177         bzero(data->buf, MCLBYTES);
2178         mem = (struct upgt_lmac_mem *)data->buf;
2179         mem->addr = htole32(data->addr);
2180         txdesc = (struct upgt_lmac_tx_desc *)(mem + 1);
2181
2182         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
2183             IEEE80211_FC0_TYPE_MGT) {
2184                 /* mgmt frames  */
2185                 txdesc->header1.flags = UPGT_H1_FLAGS_TX_MGMT;
2186                 /* always send mgmt frames at lowest rate (DS1) */
2187                 memset(txdesc->rates, 0x10, sizeof(txdesc->rates));
2188         } else {
2189                 /* data frames  */
2190                 txdesc->header1.flags = UPGT_H1_FLAGS_TX_DATA;
2191                 bcopy(sc->sc_cur_rateset, txdesc->rates, sizeof(txdesc->rates));
2192         }
2193         txdesc->header1.type = UPGT_H1_TYPE_TX_DATA;
2194         txdesc->header1.len = htole16(m->m_pkthdr.len);
2195         txdesc->header2.reqid = htole32(data->addr);
2196         txdesc->header2.type = htole16(UPGT_H2_TYPE_TX_ACK_YES);
2197         txdesc->header2.flags = htole16(UPGT_H2_FLAGS_TX_ACK_YES);
2198         txdesc->type = htole32(UPGT_TX_DESC_TYPE_DATA);
2199         txdesc->pad3[0] = UPGT_TX_DESC_PAD3_SIZE;
2200
2201         if (ieee80211_radiotap_active_vap(vap)) {
2202                 struct upgt_tx_radiotap_header *tap = &sc->sc_txtap;
2203
2204                 tap->wt_flags = 0;
2205                 tap->wt_rate = 0;       /* XXX where to get from? */
2206
2207                 ieee80211_radiotap_tx(vap, m);
2208         }
2209
2210         /* copy frame below our TX descriptor header */
2211         m_copydata(m, 0, m->m_pkthdr.len,
2212             data->buf + (sizeof(*mem) + sizeof(*txdesc)));
2213         /* calculate frame size */
2214         len = sizeof(*mem) + sizeof(*txdesc) + m->m_pkthdr.len;
2215         /* we need to align the frame to a 4 byte boundary */
2216         len = (len + 3) & ~3;
2217         /* calculate frame checksum */
2218         mem->chksum = upgt_chksum_le((uint32_t *)txdesc, len - sizeof(*mem));
2219         data->ni = ni;
2220         data->m = m;
2221         data->buflen = len;
2222
2223         DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: TX start data sending (%d bytes)\n",
2224             __func__, len);
2225         KASSERT(len <= MCLBYTES, ("mbuf is small for saving data"));
2226
2227         upgt_bulk_tx(sc, data);
2228 done:
2229         /*
2230          * If we don't regulary read the device statistics, the RX queue
2231          * will stall.  It's strange, but it works, so we keep reading
2232          * the statistics here.  *shrug*
2233          */
2234         if (!(ifp->if_opackets % UPGT_TX_STAT_INTERVAL))
2235                 upgt_get_stats(sc);
2236
2237         return (error);
2238 }
2239
2240 static void
2241 upgt_bulk_rx_callback(struct usb_xfer *xfer, usb_error_t error)
2242 {
2243         struct upgt_softc *sc = usbd_xfer_softc(xfer);
2244         struct ifnet *ifp = sc->sc_ifp;
2245         struct ieee80211com *ic = ifp->if_l2com;
2246         struct ieee80211_frame *wh;
2247         struct ieee80211_node *ni;
2248         struct mbuf *m = NULL;
2249         struct upgt_data *data;
2250         int8_t nf;
2251         int rssi = -1;
2252
2253         UPGT_ASSERT_LOCKED(sc);
2254
2255         switch (USB_GET_STATE(xfer)) {
2256         case USB_ST_TRANSFERRED:
2257                 data = STAILQ_FIRST(&sc->sc_rx_active);
2258                 if (data == NULL)
2259                         goto setup;
2260                 STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2261                 m = upgt_rxeof(xfer, data, &rssi);
2262                 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2263                 /* FALLTHROUGH */
2264         case USB_ST_SETUP:
2265 setup:
2266                 data = STAILQ_FIRST(&sc->sc_rx_inactive);
2267                 if (data == NULL)
2268                         return;
2269                 STAILQ_REMOVE_HEAD(&sc->sc_rx_inactive, next);
2270                 STAILQ_INSERT_TAIL(&sc->sc_rx_active, data, next);
2271                 usbd_xfer_set_frame_data(xfer, 0, data->buf,
2272                     usbd_xfer_max_len(xfer));
2273                 usbd_transfer_submit(xfer);
2274
2275                 /*
2276                  * To avoid LOR we should unlock our private mutex here to call
2277                  * ieee80211_input() because here is at the end of a USB
2278                  * callback and safe to unlock.
2279                  */
2280                 UPGT_UNLOCK(sc);
2281                 if (m != NULL) {
2282                         wh = mtod(m, struct ieee80211_frame *);
2283                         ni = ieee80211_find_rxnode(ic,
2284                             (struct ieee80211_frame_min *)wh);
2285                         nf = -95;       /* XXX */
2286                         if (ni != NULL) {
2287                                 (void) ieee80211_input(ni, m, rssi, nf);
2288                                 /* node is no longer needed */
2289                                 ieee80211_free_node(ni);
2290                         } else
2291                                 (void) ieee80211_input_all(ic, m, rssi, nf);
2292                         m = NULL;
2293                 }
2294                 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
2295                     !IFQ_IS_EMPTY(&ifp->if_snd))
2296                         upgt_start(ifp);
2297                 UPGT_LOCK(sc);
2298                 break;
2299         default:
2300                 /* needs it to the inactive queue due to a error.  */
2301                 data = STAILQ_FIRST(&sc->sc_rx_active);
2302                 if (data != NULL) {
2303                         STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2304                         STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2305                 }
2306                 if (error != USB_ERR_CANCELLED) {
2307                         usbd_xfer_set_stall(xfer);
2308                         ifp->if_ierrors++;
2309                         goto setup;
2310                 }
2311                 break;
2312         }
2313 }
2314
2315 static void
2316 upgt_bulk_tx_callback(struct usb_xfer *xfer, usb_error_t error)
2317 {
2318         struct upgt_softc *sc = usbd_xfer_softc(xfer);
2319         struct ifnet *ifp = sc->sc_ifp;
2320         struct upgt_data *data;
2321
2322         UPGT_ASSERT_LOCKED(sc);
2323         switch (USB_GET_STATE(xfer)) {
2324         case USB_ST_TRANSFERRED:
2325                 data = STAILQ_FIRST(&sc->sc_tx_active);
2326                 if (data == NULL)
2327                         goto setup;
2328                 STAILQ_REMOVE_HEAD(&sc->sc_tx_active, next);
2329                 UPGT_STAT_DEC(sc, st_tx_active);
2330                 upgt_txeof(xfer, data);
2331                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
2332                 UPGT_STAT_INC(sc, st_tx_inactive);
2333                 /* FALLTHROUGH */
2334         case USB_ST_SETUP:
2335 setup:
2336                 data = STAILQ_FIRST(&sc->sc_tx_pending);
2337                 if (data == NULL) {
2338                         DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: empty pending queue\n",
2339                             __func__);
2340                         return;
2341                 }
2342                 STAILQ_REMOVE_HEAD(&sc->sc_tx_pending, next);
2343                 UPGT_STAT_DEC(sc, st_tx_pending);
2344                 STAILQ_INSERT_TAIL(&sc->sc_tx_active, data, next);
2345                 UPGT_STAT_INC(sc, st_tx_active);
2346
2347                 usbd_xfer_set_frame_data(xfer, 0, data->buf, data->buflen);
2348                 usbd_transfer_submit(xfer);
2349                 UPGT_UNLOCK(sc);
2350                 upgt_start(ifp);
2351                 UPGT_LOCK(sc);
2352                 break;
2353         default:
2354                 data = STAILQ_FIRST(&sc->sc_tx_active);
2355                 if (data == NULL)
2356                         goto setup;
2357                 if (data->ni != NULL) {
2358                         ieee80211_free_node(data->ni);
2359                         data->ni = NULL;
2360                         ifp->if_oerrors++;
2361                 }
2362                 if (error != USB_ERR_CANCELLED) {
2363                         usbd_xfer_set_stall(xfer);
2364                         goto setup;
2365                 }
2366                 break;
2367         }
2368 }
2369
2370 static device_method_t upgt_methods[] = {
2371         /* Device interface */
2372         DEVMETHOD(device_probe, upgt_match),
2373         DEVMETHOD(device_attach, upgt_attach),
2374         DEVMETHOD(device_detach, upgt_detach),
2375
2376         { 0, 0 }
2377 };
2378
2379 static driver_t upgt_driver = {
2380         "upgt",
2381         upgt_methods,
2382         sizeof(struct upgt_softc)
2383 };
2384
2385 static devclass_t upgt_devclass;
2386
2387 DRIVER_MODULE(if_upgt, uhub, upgt_driver, upgt_devclass, NULL, 0);
2388 MODULE_VERSION(if_upgt, 1);
2389 MODULE_DEPEND(if_upgt, usb, 1, 1, 1);
2390 MODULE_DEPEND(if_upgt, wlan, 1, 1, 1);
2391 MODULE_DEPEND(if_upgt, upgtfw_fw, 1, 1, 1);