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 static 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 | CTLFLAG_TUN, &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 [IFNAMSIZ], int, enum ieee80211_opmode, int,
 142                     const uint8_t [IEEE80211_ADDR_LEN],
 143                     const uint8_t [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_HOST_ID upgt_devs[] = {
 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(NETGEAR,       WG111V2_2),
 186         UPGT_DEV(INTERSIL,      PRISM_GT),
 187         UPGT_DEV(SMC,           2862WG),
 188         UPGT_DEV(USR,           USR5422),
 189         UPGT_DEV(WISTRONNEWEB,  UR045G),
 190         UPGT_DEV(XYRATEX,       PRISM_GT_1),
 191         UPGT_DEV(XYRATEX,       PRISM_GT_2),
 192         UPGT_DEV(ZCOM,          XG703A),
 193         UPGT_DEV(ZCOM,          XM142)
 194 };
 195
 196 static usb_callback_t upgt_bulk_rx_callback;
 197 static usb_callback_t upgt_bulk_tx_callback;
 198
 199 static const struct usb_config upgt_config[UPGT_N_XFERS] = {
 200         [UPGT_BULK_TX] = {
 201                 .type = UE_BULK,
 202                 .endpoint = UE_ADDR_ANY,
 203                 .direction = UE_DIR_OUT,
 204                 .bufsize = MCLBYTES * UPGT_TX_MAXCOUNT,
 205                 .flags = {
 206                         .force_short_xfer = 1,
 207                         .pipe_bof = 1
 208                 },
 209                 .callback = upgt_bulk_tx_callback,
 210                 .timeout = UPGT_USB_TIMEOUT,    /* ms */
 211         },
 212         [UPGT_BULK_RX] = {
 213                 .type = UE_BULK,
 214                 .endpoint = UE_ADDR_ANY,
 215                 .direction = UE_DIR_IN,
 216                 .bufsize = MCLBYTES * UPGT_RX_MAXCOUNT,
 217                 .flags = {
 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, sizeof(upgt_devs), 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         error = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer,
 263             upgt_config, UPGT_N_XFERS, sc, &sc->sc_mtx);
 264         if (error) {
 265                 device_printf(dev, "could not allocate USB transfers, "
 266                     "err=%s\n", usbd_errstr(error));
 267                 goto fail1;
 268         }
 269
 270         sc->sc_rx_dma_buf = usbd_xfer_get_frame_buffer(
 271             sc->sc_xfer[UPGT_BULK_RX], 0);
 272         sc->sc_tx_dma_buf = usbd_xfer_get_frame_buffer(
 273             sc->sc_xfer[UPGT_BULK_TX], 0);
 274
 275         /* Setup TX and RX buffers */
 276         error = upgt_alloc_tx(sc);
 277         if (error)
 278                 goto fail2;
 279         error = upgt_alloc_rx(sc);
 280         if (error)
 281                 goto fail3;
 282
 283         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 284         if (ifp == NULL) {
 285                 device_printf(dev, "can not if_alloc()\n");
 286                 goto fail4;
 287         }
 288
 289         /* Initialize the device.  */
 290         error = upgt_device_reset(sc);
 291         if (error)
 292                 goto fail5;
 293         /* Verify the firmware.  */
 294         error = upgt_fw_verify(sc);
 295         if (error)
 296                 goto fail5;
 297         /* Calculate device memory space.  */
 298         if (sc->sc_memaddr_frame_start == 0 || sc->sc_memaddr_frame_end == 0) {
 299                 device_printf(dev,
 300                     "could not find memory space addresses on FW\n");
 301                 error = EIO;
 302                 goto fail5;
 303         }
 304         sc->sc_memaddr_frame_end -= UPGT_MEMSIZE_RX + 1;
 305         sc->sc_memaddr_rx_start = sc->sc_memaddr_frame_end + 1;
 306
 307         DPRINTF(sc, UPGT_DEBUG_FW, "memory address frame start=0x%08x\n",
 308             sc->sc_memaddr_frame_start);
 309         DPRINTF(sc, UPGT_DEBUG_FW, "memory address frame end=0x%08x\n",
 310             sc->sc_memaddr_frame_end);
 311         DPRINTF(sc, UPGT_DEBUG_FW, "memory address rx start=0x%08x\n",
 312             sc->sc_memaddr_rx_start);
 313
 314         upgt_mem_init(sc);
 315
 316         /* Load the firmware.  */
 317         error = upgt_fw_load(sc);
 318         if (error)
 319                 goto fail5;
 320
 321         /* Read the whole EEPROM content and parse it.  */
 322         error = upgt_eeprom_read(sc);
 323         if (error)
 324                 goto fail5;
 325         error = upgt_eeprom_parse(sc);
 326         if (error)
 327                 goto fail5;
 328
 329         /* all works related with the device have done here. */
 330         upgt_abort_xfers(sc);
 331
 332         /* Setup the 802.11 device.  */
 333         ifp->if_softc = sc;
 334         if_initname(ifp, "upgt", device_get_unit(sc->sc_dev));
 335         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 336         ifp->if_init = upgt_init;
 337         ifp->if_ioctl = upgt_ioctl;
 338         ifp->if_start = upgt_start;
 339         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 340         IFQ_SET_READY(&ifp->if_snd);
 341
 342         ic = ifp->if_l2com;
 343         ic->ic_ifp = ifp;
 344         ic->ic_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
 345         ic->ic_opmode = IEEE80211_M_STA;
 346         /* set device capabilities */
 347         ic->ic_caps =
 348                   IEEE80211_C_STA               /* station mode */
 349                 | IEEE80211_C_MONITOR           /* monitor mode */
 350                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 351                 | IEEE80211_C_SHSLOT            /* short slot time supported */
 352                 | IEEE80211_C_BGSCAN            /* capable of bg scanning */
 353                 | IEEE80211_C_WPA               /* 802.11i */
 354                 ;
 355
 356         bands = 0;
 357         setbit(&bands, IEEE80211_MODE_11B);
 358         setbit(&bands, IEEE80211_MODE_11G);
 359         ieee80211_init_channels(ic, NULL, &bands);
 360
 361         ieee80211_ifattach(ic, sc->sc_myaddr);
 362         ic->ic_raw_xmit = upgt_raw_xmit;
 363         ic->ic_scan_start = upgt_scan_start;
 364         ic->ic_scan_end = upgt_scan_end;
 365         ic->ic_set_channel = upgt_set_channel;
 366
 367         ic->ic_vap_create = upgt_vap_create;
 368         ic->ic_vap_delete = upgt_vap_delete;
 369         ic->ic_update_mcast = upgt_update_mcast;
 370
 371         ieee80211_radiotap_attach(ic,
 372             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 373                 UPGT_TX_RADIOTAP_PRESENT,
 374             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 375                 UPGT_RX_RADIOTAP_PRESENT);
 376
 377         upgt_sysctl_node(sc);
 378
 379         if (bootverbose)
 380                 ieee80211_announce(ic);
 381
 382         return (0);
 383
 384 fail5:  if_free(ifp);
 385 fail4:  upgt_free_rx(sc);
 386 fail3:  upgt_free_tx(sc);
 387 fail2:  usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
 388 fail1:  mtx_destroy(&sc->sc_mtx);
 389
 390         return (error);
 391 }
 392
 393 static void
 394 upgt_txeof(struct usb_xfer *xfer, struct upgt_data *data)
 395 {
 396         struct upgt_softc *sc = usbd_xfer_softc(xfer);
 397         struct ifnet *ifp = sc->sc_ifp;
 398         struct mbuf *m;
 399
 400         UPGT_ASSERT_LOCKED(sc);
 401
 402         /*
 403          * Do any tx complete callback.  Note this must be done before releasing
 404          * the node reference.
 405          */
 406         if (data->m) {
 407                 m = data->m;
 408                 if (m->m_flags & M_TXCB) {
 409                         /* XXX status? */
 410                         ieee80211_process_callback(data->ni, m, 0);
 411                 }
 412                 m_freem(m);
 413                 data->m = NULL;
 414         }
 415         if (data->ni) {
 416                 ieee80211_free_node(data->ni);
 417                 data->ni = NULL;
 418         }
 419         ifp->if_opackets++;
 420 }
 421
 422 static void
 423 upgt_get_stats(struct upgt_softc *sc)
 424 {
 425         struct upgt_data *data_cmd;
 426         struct upgt_lmac_mem *mem;
 427         struct upgt_lmac_stats *stats;
 428
 429         data_cmd = upgt_getbuf(sc);
 430         if (data_cmd == NULL) {
 431                 device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
 432                 return;
 433         }
 434
 435         /*
 436          * Transmit the URB containing the CMD data.
 437          */
 438         memset(data_cmd->buf, 0, MCLBYTES);
 439
 440         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 441         mem->addr = htole32(sc->sc_memaddr_frame_start +
 442             UPGT_MEMSIZE_FRAME_HEAD);
 443
 444         stats = (struct upgt_lmac_stats *)(mem + 1);
 445
 446         stats->header1.flags = 0;
 447         stats->header1.type = UPGT_H1_TYPE_CTRL;
 448         stats->header1.len = htole16(
 449             sizeof(struct upgt_lmac_stats) - sizeof(struct upgt_lmac_header));
 450
 451         stats->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 452         stats->header2.type = htole16(UPGT_H2_TYPE_STATS);
 453         stats->header2.flags = 0;
 454
 455         data_cmd->buflen = sizeof(*mem) + sizeof(*stats);
 456
 457         mem->chksum = upgt_chksum_le((uint32_t *)stats,
 458             data_cmd->buflen - sizeof(*mem));
 459
 460         upgt_bulk_tx(sc, data_cmd);
 461 }
 462
 463 static int
 464 upgt_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 465 {
 466         struct upgt_softc *sc = ifp->if_softc;
 467         struct ieee80211com *ic = ifp->if_l2com;
 468         struct ifreq *ifr = (struct ifreq *) data;
 469         int error;
 470         int startall = 0;
 471
 472         UPGT_LOCK(sc);
 473         error = (sc->sc_flags & UPGT_FLAG_DETACHED) ? ENXIO : 0;
 474         UPGT_UNLOCK(sc);
 475         if (error)
 476                 return (error);
 477
 478         switch (cmd) {
 479         case SIOCSIFFLAGS:
 480                 if (ifp->if_flags & IFF_UP) {
 481                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 482                                 if ((ifp->if_flags ^ sc->sc_if_flags) &
 483                                     (IFF_ALLMULTI | IFF_PROMISC))
 484                                         upgt_set_multi(sc);
 485                         } else {
 486                                 upgt_init(sc);
 487                                 startall = 1;
 488                         }
 489                 } else {
 490                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 491                                 upgt_stop(sc);
 492                 }
 493                 sc->sc_if_flags = ifp->if_flags;
 494                 if (startall)
 495                         ieee80211_start_all(ic);
 496                 break;
 497         case SIOCGIFMEDIA:
 498                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
 499                 break;
 500         case SIOCGIFADDR:
 501                 error = ether_ioctl(ifp, cmd, data);
 502                 break;
 503         default:
 504                 error = EINVAL;
 505                 break;
 506         }
 507         return error;
 508 }
 509
 510 static void
 511 upgt_stop_locked(struct upgt_softc *sc)
 512 {
 513         struct ifnet *ifp = sc->sc_ifp;
 514
 515         UPGT_ASSERT_LOCKED(sc);
 516
 517         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 518                 upgt_set_macfilter(sc, IEEE80211_S_INIT);
 519         upgt_abort_xfers_locked(sc);
 520 }
 521
 522 static void
 523 upgt_stop(struct upgt_softc *sc)
 524 {
 525         struct ifnet *ifp = sc->sc_ifp;
 526
 527         UPGT_LOCK(sc);
 528         upgt_stop_locked(sc);
 529         UPGT_UNLOCK(sc);
 530
 531         /* device down */
 532         sc->sc_tx_timer = 0;
 533         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
 534         sc->sc_flags &= ~UPGT_FLAG_INITDONE;
 535 }
 536
 537 static void
 538 upgt_set_led(struct upgt_softc *sc, int action)
 539 {
 540         struct upgt_data *data_cmd;
 541         struct upgt_lmac_mem *mem;
 542         struct upgt_lmac_led *led;
 543
 544         data_cmd = upgt_getbuf(sc);
 545         if (data_cmd == NULL) {
 546                 device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
 547                 return;
 548         }
 549
 550         /*
 551          * Transmit the URB containing the CMD data.
 552          */
 553         memset(data_cmd->buf, 0, MCLBYTES);
 554
 555         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 556         mem->addr = htole32(sc->sc_memaddr_frame_start +
 557             UPGT_MEMSIZE_FRAME_HEAD);
 558
 559         led = (struct upgt_lmac_led *)(mem + 1);
 560
 561         led->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 562         led->header1.type = UPGT_H1_TYPE_CTRL;
 563         led->header1.len = htole16(
 564             sizeof(struct upgt_lmac_led) -
 565             sizeof(struct upgt_lmac_header));
 566
 567         led->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 568         led->header2.type = htole16(UPGT_H2_TYPE_LED);
 569         led->header2.flags = 0;
 570
 571         switch (action) {
 572         case UPGT_LED_OFF:
 573                 led->mode = htole16(UPGT_LED_MODE_SET);
 574                 led->action_fix = 0;
 575                 led->action_tmp = htole16(UPGT_LED_ACTION_OFF);
 576                 led->action_tmp_dur = 0;
 577                 break;
 578         case UPGT_LED_ON:
 579                 led->mode = htole16(UPGT_LED_MODE_SET);
 580                 led->action_fix = 0;
 581                 led->action_tmp = htole16(UPGT_LED_ACTION_ON);
 582                 led->action_tmp_dur = 0;
 583                 break;
 584         case UPGT_LED_BLINK:
 585                 if (sc->sc_state != IEEE80211_S_RUN) {
 586                         STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 587                         return;
 588                 }
 589                 if (sc->sc_led_blink) {
 590                         /* previous blink was not finished */
 591                         STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 592                         return;
 593                 }
 594                 led->mode = htole16(UPGT_LED_MODE_SET);
 595                 led->action_fix = htole16(UPGT_LED_ACTION_OFF);
 596                 led->action_tmp = htole16(UPGT_LED_ACTION_ON);
 597                 led->action_tmp_dur = htole16(UPGT_LED_ACTION_TMP_DUR);
 598                 /* lock blink */
 599                 sc->sc_led_blink = 1;
 600                 callout_reset(&sc->sc_led_ch, hz, upgt_set_led_blink, sc);
 601                 break;
 602         default:
 603                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 604                 return;
 605         }
 606
 607         data_cmd->buflen = sizeof(*mem) + sizeof(*led);
 608
 609         mem->chksum = upgt_chksum_le((uint32_t *)led,
 610             data_cmd->buflen - sizeof(*mem));
 611
 612         upgt_bulk_tx(sc, data_cmd);
 613 }
 614
 615 static void
 616 upgt_set_led_blink(void *arg)
 617 {
 618         struct upgt_softc *sc = arg;
 619
 620         /* blink finished, we are ready for a next one */
 621         sc->sc_led_blink = 0;
 622 }
 623
 624 static void
 625 upgt_init(void *priv)
 626 {
 627         struct upgt_softc *sc = priv;
 628         struct ifnet *ifp = sc->sc_ifp;
 629         struct ieee80211com *ic = ifp->if_l2com;
 630
 631         UPGT_LOCK(sc);
 632         upgt_init_locked(sc);
 633         UPGT_UNLOCK(sc);
 634
 635         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 636                 ieee80211_start_all(ic);                /* start all vap's */
 637 }
 638
 639 static void
 640 upgt_init_locked(struct upgt_softc *sc)
 641 {
 642         struct ifnet *ifp = sc->sc_ifp;
 643
 644         UPGT_ASSERT_LOCKED(sc);
 645
 646         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 647                 upgt_stop_locked(sc);
 648
 649         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_RX]);
 650
 651         (void)upgt_set_macfilter(sc, IEEE80211_S_SCAN);
 652
 653         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 654         ifp->if_drv_flags |= IFF_DRV_RUNNING;
 655         sc->sc_flags |= UPGT_FLAG_INITDONE;
 656
 657         callout_reset(&sc->sc_watchdog_ch, hz, upgt_watchdog, sc);
 658 }
 659
 660 static int
 661 upgt_set_macfilter(struct upgt_softc *sc, uint8_t state)
 662 {
 663         struct ifnet *ifp = sc->sc_ifp;
 664         struct ieee80211com *ic = ifp->if_l2com;
 665         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
 666         struct ieee80211_node *ni;
 667         struct upgt_data *data_cmd;
 668         struct upgt_lmac_mem *mem;
 669         struct upgt_lmac_filter *filter;
 670         uint8_t broadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 671
 672         UPGT_ASSERT_LOCKED(sc);
 673
 674         data_cmd = upgt_getbuf(sc);
 675         if (data_cmd == NULL) {
 676                 device_printf(sc->sc_dev, "out of TX buffers.\n");
 677                 return (ENOBUFS);
 678         }
 679
 680         /*
 681          * Transmit the URB containing the CMD data.
 682          */
 683         memset(data_cmd->buf, 0, MCLBYTES);
 684
 685         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 686         mem->addr = htole32(sc->sc_memaddr_frame_start +
 687             UPGT_MEMSIZE_FRAME_HEAD);
 688
 689         filter = (struct upgt_lmac_filter *)(mem + 1);
 690
 691         filter->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 692         filter->header1.type = UPGT_H1_TYPE_CTRL;
 693         filter->header1.len = htole16(
 694             sizeof(struct upgt_lmac_filter) -
 695             sizeof(struct upgt_lmac_header));
 696
 697         filter->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 698         filter->header2.type = htole16(UPGT_H2_TYPE_MACFILTER);
 699         filter->header2.flags = 0;
 700
 701         switch (state) {
 702         case IEEE80211_S_INIT:
 703                 DPRINTF(sc, UPGT_DEBUG_STATE, "%s: set MAC filter to INIT\n",
 704                     __func__);
 705                 filter->type = htole16(UPGT_FILTER_TYPE_RESET);
 706                 break;
 707         case IEEE80211_S_SCAN:
 708                 DPRINTF(sc, UPGT_DEBUG_STATE,
 709                     "set MAC filter to SCAN (bssid %s)\n",
 710                     ether_sprintf(broadcast));
 711                 filter->type = htole16(UPGT_FILTER_TYPE_NONE);
 712                 IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 713                 IEEE80211_ADDR_COPY(filter->src, broadcast);
 714                 filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1);
 715                 filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 716                 filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2);
 717                 filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 718                 filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3);
 719                 break;
 720         case IEEE80211_S_RUN:
 721                 ni = ieee80211_ref_node(vap->iv_bss);
 722                 /* XXX monitor mode isn't tested yet.  */
 723                 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
 724                         filter->type = htole16(UPGT_FILTER_TYPE_MONITOR);
 725                         IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 726                         IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid);
 727                         filter->unknown1 = htole16(UPGT_FILTER_MONITOR_UNKNOWN1);
 728                         filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 729                         filter->unknown2 = htole16(UPGT_FILTER_MONITOR_UNKNOWN2);
 730                         filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 731                         filter->unknown3 = htole16(UPGT_FILTER_MONITOR_UNKNOWN3);
 732                 } else {
 733                         DPRINTF(sc, UPGT_DEBUG_STATE,
 734                             "set MAC filter to RUN (bssid %s)\n",
 735                             ether_sprintf(ni->ni_bssid));
 736                         filter->type = htole16(UPGT_FILTER_TYPE_STA);
 737                         IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 738                         IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid);
 739                         filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1);
 740                         filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 741                         filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2);
 742                         filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 743                         filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3);
 744                 }
 745                 ieee80211_free_node(ni);
 746                 break;
 747         default:
 748                 device_printf(sc->sc_dev,
 749                     "MAC filter does not know that state\n");
 750                 break;
 751         }
 752
 753         data_cmd->buflen = sizeof(*mem) + sizeof(*filter);
 754
 755         mem->chksum = upgt_chksum_le((uint32_t *)filter,
 756             data_cmd->buflen - sizeof(*mem));
 757
 758         upgt_bulk_tx(sc, data_cmd);
 759
 760         return (0);
 761 }
 762
 763 static void
 764 upgt_setup_rates(struct ieee80211vap *vap, struct ieee80211com *ic)
 765 {
 766         struct ifnet *ifp = ic->ic_ifp;
 767         struct upgt_softc *sc = ifp->if_softc;
 768         const struct ieee80211_txparam *tp;
 769
 770         /*
 771          * 0x01 = OFMD6   0x10 = DS1
 772          * 0x04 = OFDM9   0x11 = DS2
 773          * 0x06 = OFDM12  0x12 = DS5
 774          * 0x07 = OFDM18  0x13 = DS11
 775          * 0x08 = OFDM24
 776          * 0x09 = OFDM36
 777          * 0x0a = OFDM48
 778          * 0x0b = OFDM54
 779          */
 780         const uint8_t rateset_auto_11b[] =
 781             { 0x13, 0x13, 0x12, 0x11, 0x11, 0x10, 0x10, 0x10 };
 782         const uint8_t rateset_auto_11g[] =
 783             { 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x04, 0x01 };
 784         const uint8_t rateset_fix_11bg[] =
 785             { 0x10, 0x11, 0x12, 0x13, 0x01, 0x04, 0x06, 0x07,
 786               0x08, 0x09, 0x0a, 0x0b };
 787
 788         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
 789
 790         /* XXX */
 791         if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) {
 792                 /*
 793                  * Automatic rate control is done by the device.
 794                  * We just pass the rateset from which the device
 795                  * will pickup a rate.
 796                  */
 797                 if (ic->ic_curmode == IEEE80211_MODE_11B)
 798                         memcpy(sc->sc_cur_rateset, rateset_auto_11b,
 799                             sizeof(sc->sc_cur_rateset));
 800                 if (ic->ic_curmode == IEEE80211_MODE_11G ||
 801                     ic->ic_curmode == IEEE80211_MODE_AUTO)
 802                         memcpy(sc->sc_cur_rateset, rateset_auto_11g,
 803                             sizeof(sc->sc_cur_rateset));
 804         } else {
 805                 /* set a fixed rate */
 806                 memset(sc->sc_cur_rateset, rateset_fix_11bg[tp->ucastrate],
 807                     sizeof(sc->sc_cur_rateset));
 808         }
 809 }
 810
 811 static void
 812 upgt_set_multi(void *arg)
 813 {
 814         struct upgt_softc *sc = arg;
 815         struct ifnet *ifp = sc->sc_ifp;
 816
 817         if (!(ifp->if_flags & IFF_UP))
 818                 return;
 819
 820         /*
 821          * XXX don't know how to set a device.  Lack of docs.  Just try to set
 822          * IFF_ALLMULTI flag here.
 823          */
 824         ifp->if_flags |= IFF_ALLMULTI;
 825 }
 826
 827 static void
 828 upgt_start(struct ifnet *ifp)
 829 {
 830         struct upgt_softc *sc = ifp->if_softc;
 831         struct upgt_data *data_tx;
 832         struct ieee80211_node *ni;
 833         struct mbuf *m;
 834
 835         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
 836                 return;
 837
 838         UPGT_LOCK(sc);
 839         for (;;) {
 840                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
 841                 if (m == NULL)
 842                         break;
 843
 844                 data_tx = upgt_gettxbuf(sc);
 845                 if (data_tx == NULL) {
 846                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
 847                         break;
 848                 }
 849
 850                 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
 851                 m->m_pkthdr.rcvif = NULL;
 852
 853                 if (upgt_tx_start(sc, m, ni, data_tx) != 0) {
 854                         STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, data_tx, next);
 855                         UPGT_STAT_INC(sc, st_tx_inactive);
 856                         ieee80211_free_node(ni);
 857                         ifp->if_oerrors++;
 858                         continue;
 859                 }
 860                 sc->sc_tx_timer = 5;
 861         }
 862         UPGT_UNLOCK(sc);
 863 }
 864
 865 static int
 866 upgt_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
 867         const struct ieee80211_bpf_params *params)
 868 {
 869         struct ieee80211com *ic = ni->ni_ic;
 870         struct ifnet *ifp = ic->ic_ifp;
 871         struct upgt_softc *sc = ifp->if_softc;
 872         struct upgt_data *data_tx = NULL;
 873
 874         /* prevent management frames from being sent if we're not ready */
 875         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 876                 m_freem(m);
 877                 ieee80211_free_node(ni);
 878                 return ENETDOWN;
 879         }
 880
 881         UPGT_LOCK(sc);
 882         data_tx = upgt_gettxbuf(sc);
 883         if (data_tx == NULL) {
 884                 ieee80211_free_node(ni);
 885                 m_freem(m);
 886                 UPGT_UNLOCK(sc);
 887                 return (ENOBUFS);
 888         }
 889
 890         if (upgt_tx_start(sc, m, ni, data_tx) != 0) {
 891                 STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, data_tx, next);
 892                 UPGT_STAT_INC(sc, st_tx_inactive);
 893                 ieee80211_free_node(ni);
 894                 ifp->if_oerrors++;
 895                 UPGT_UNLOCK(sc);
 896                 return (EIO);
 897         }
 898         UPGT_UNLOCK(sc);
 899
 900         sc->sc_tx_timer = 5;
 901         return (0);
 902 }
 903
 904 static void
 905 upgt_watchdog(void *arg)
 906 {
 907         struct upgt_softc *sc = arg;
 908         struct ifnet *ifp = sc->sc_ifp;
 909
 910         if (sc->sc_tx_timer > 0) {
 911                 if (--sc->sc_tx_timer == 0) {
 912                         device_printf(sc->sc_dev, "watchdog timeout\n");
 913                         /* upgt_init(ifp); XXX needs a process context ? */
 914                         ifp->if_oerrors++;
 915                         return;
 916                 }
 917                 callout_reset(&sc->sc_watchdog_ch, hz, upgt_watchdog, sc);
 918         }
 919 }
 920
 921 static uint32_t
 922 upgt_mem_alloc(struct upgt_softc *sc)
 923 {
 924         int i;
 925
 926         for (i = 0; i < sc->sc_memory.pages; i++) {
 927                 if (sc->sc_memory.page[i].used == 0) {
 928                         sc->sc_memory.page[i].used = 1;
 929                         return (sc->sc_memory.page[i].addr);
 930                 }
 931         }
 932
 933         return (0);
 934 }
 935
 936 static void
 937 upgt_scan_start(struct ieee80211com *ic)
 938 {
 939         /* do nothing.  */
 940 }
 941
 942 static void
 943 upgt_scan_end(struct ieee80211com *ic)
 944 {
 945         /* do nothing.  */
 946 }
 947
 948 static void
 949 upgt_set_channel(struct ieee80211com *ic)
 950 {
 951         struct upgt_softc *sc = ic->ic_ifp->if_softc;
 952
 953         UPGT_LOCK(sc);
 954         upgt_set_chan(sc, ic->ic_curchan);
 955         UPGT_UNLOCK(sc);
 956 }
 957
 958 static void
 959 upgt_set_chan(struct upgt_softc *sc, struct ieee80211_channel *c)
 960 {
 961         struct ifnet *ifp = sc->sc_ifp;
 962         struct ieee80211com *ic = ifp->if_l2com;
 963         struct upgt_data *data_cmd;
 964         struct upgt_lmac_mem *mem;
 965         struct upgt_lmac_channel *chan;
 966         int channel;
 967
 968         UPGT_ASSERT_LOCKED(sc);
 969
 970         channel = ieee80211_chan2ieee(ic, c);
 971         if (channel == 0 || channel == IEEE80211_CHAN_ANY) {
 972                 /* XXX should NEVER happen */
 973                 device_printf(sc->sc_dev,
 974                     "%s: invalid channel %x\n", __func__, channel);
 975                 return;
 976         }
 977
 978         DPRINTF(sc, UPGT_DEBUG_STATE, "%s: channel %d\n", __func__, channel);
 979
 980         data_cmd = upgt_getbuf(sc);
 981         if (data_cmd == NULL) {
 982                 device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
 983                 return;
 984         }
 985         /*
 986          * Transmit the URB containing the CMD data.
 987          */
 988         memset(data_cmd->buf, 0, MCLBYTES);
 989
 990         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 991         mem->addr = htole32(sc->sc_memaddr_frame_start +
 992             UPGT_MEMSIZE_FRAME_HEAD);
 993
 994         chan = (struct upgt_lmac_channel *)(mem + 1);
 995
 996         chan->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 997         chan->header1.type = UPGT_H1_TYPE_CTRL;
 998         chan->header1.len = htole16(
 999             sizeof(struct upgt_lmac_channel) - sizeof(struct upgt_lmac_header));
1000
1001         chan->header2.reqid = htole32(sc->sc_memaddr_frame_start);
1002         chan->header2.type = htole16(UPGT_H2_TYPE_CHANNEL);
1003         chan->header2.flags = 0;
1004
1005         chan->unknown1 = htole16(UPGT_CHANNEL_UNKNOWN1);
1006         chan->unknown2 = htole16(UPGT_CHANNEL_UNKNOWN2);
1007         chan->freq6 = sc->sc_eeprom_freq6[channel];
1008         chan->settings = sc->sc_eeprom_freq6_settings;
1009         chan->unknown3 = UPGT_CHANNEL_UNKNOWN3;
1010
1011         memcpy(chan->freq3_1, &sc->sc_eeprom_freq3[channel].data,
1012             sizeof(chan->freq3_1));
1013         memcpy(chan->freq4, &sc->sc_eeprom_freq4[channel],
1014             sizeof(sc->sc_eeprom_freq4[channel]));
1015         memcpy(chan->freq3_2, &sc->sc_eeprom_freq3[channel].data,
1016             sizeof(chan->freq3_2));
1017
1018         data_cmd->buflen = sizeof(*mem) + sizeof(*chan);
1019
1020         mem->chksum = upgt_chksum_le((uint32_t *)chan,
1021             data_cmd->buflen - sizeof(*mem));
1022
1023         upgt_bulk_tx(sc, data_cmd);
1024 }
1025
1026 static struct ieee80211vap *
1027 upgt_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
1028     enum ieee80211_opmode opmode, int flags,
1029     const uint8_t bssid[IEEE80211_ADDR_LEN],
1030     const uint8_t mac[IEEE80211_ADDR_LEN])
1031 {
1032         struct upgt_vap *uvp;
1033         struct ieee80211vap *vap;
1034
1035         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
1036                 return NULL;
1037         uvp = (struct upgt_vap *) malloc(sizeof(struct upgt_vap),
1038             M_80211_VAP, M_NOWAIT | M_ZERO);
1039         if (uvp == NULL)
1040                 return NULL;
1041         vap = &uvp->vap;
1042         /* enable s/w bmiss handling for sta mode */
1043
1044         if (ieee80211_vap_setup(ic, vap, name, unit, opmode,
1045             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac) != 0) {
1046                 /* out of memory */
1047                 free(uvp, M_80211_VAP);
1048                 return (NULL);
1049         }
1050
1051         /* override state transition machine */
1052         uvp->newstate = vap->iv_newstate;
1053         vap->iv_newstate = upgt_newstate;
1054
1055         /* setup device rates */
1056         upgt_setup_rates(vap, ic);
1057
1058         /* complete setup */
1059         ieee80211_vap_attach(vap, ieee80211_media_change,
1060             ieee80211_media_status);
1061         ic->ic_opmode = opmode;
1062         return vap;
1063 }
1064
1065 static int
1066 upgt_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1067 {
1068         struct upgt_vap *uvp = UPGT_VAP(vap);
1069         struct ieee80211com *ic = vap->iv_ic;
1070         struct upgt_softc *sc = ic->ic_ifp->if_softc;
1071
1072         /* do it in a process context */
1073         sc->sc_state = nstate;
1074
1075         IEEE80211_UNLOCK(ic);
1076         UPGT_LOCK(sc);
1077         callout_stop(&sc->sc_led_ch);
1078         callout_stop(&sc->sc_watchdog_ch);
1079
1080         switch (nstate) {
1081         case IEEE80211_S_INIT:
1082                 /* do not accept any frames if the device is down */
1083                 (void)upgt_set_macfilter(sc, sc->sc_state);
1084                 upgt_set_led(sc, UPGT_LED_OFF);
1085                 break;
1086         case IEEE80211_S_SCAN:
1087                 upgt_set_chan(sc, ic->ic_curchan);
1088                 break;
1089         case IEEE80211_S_AUTH:
1090                 upgt_set_chan(sc, ic->ic_curchan);
1091                 break;
1092         case IEEE80211_S_ASSOC:
1093                 break;
1094         case IEEE80211_S_RUN:
1095                 upgt_set_macfilter(sc, sc->sc_state);
1096                 upgt_set_led(sc, UPGT_LED_ON);
1097                 break;
1098         default:
1099                 break;
1100         }
1101         UPGT_UNLOCK(sc);
1102         IEEE80211_LOCK(ic);
1103         return (uvp->newstate(vap, nstate, arg));
1104 }
1105
1106 static void
1107 upgt_vap_delete(struct ieee80211vap *vap)
1108 {
1109         struct upgt_vap *uvp = UPGT_VAP(vap);
1110
1111         ieee80211_vap_detach(vap);
1112         free(uvp, M_80211_VAP);
1113 }
1114
1115 static void
1116 upgt_update_mcast(struct ifnet *ifp)
1117 {
1118         struct upgt_softc *sc = ifp->if_softc;
1119
1120         upgt_set_multi(sc);
1121 }
1122
1123 static int
1124 upgt_eeprom_parse(struct upgt_softc *sc)
1125 {
1126         struct upgt_eeprom_header *eeprom_header;
1127         struct upgt_eeprom_option *eeprom_option;
1128         uint16_t option_len;
1129         uint16_t option_type;
1130         uint16_t preamble_len;
1131         int option_end = 0;
1132
1133         /* calculate eeprom options start offset */
1134         eeprom_header = (struct upgt_eeprom_header *)sc->sc_eeprom;
1135         preamble_len = le16toh(eeprom_header->preamble_len);
1136         eeprom_option = (struct upgt_eeprom_option *)(sc->sc_eeprom +
1137             (sizeof(struct upgt_eeprom_header) + preamble_len));
1138
1139         while (!option_end) {
1140
1141                 /* sanity check */
1142                 if (eeprom_option >= (struct upgt_eeprom_option *)
1143                     (sc->sc_eeprom + UPGT_EEPROM_SIZE)) {
1144                         return (EINVAL);
1145                 }
1146
1147                 /* the eeprom option length is stored in words */
1148                 option_len =
1149                     (le16toh(eeprom_option->len) - 1) * sizeof(uint16_t);
1150                 option_type =
1151                     le16toh(eeprom_option->type);
1152
1153                 /* sanity check */
1154                 if (option_len == 0 || option_len >= UPGT_EEPROM_SIZE)
1155                         return (EINVAL);
1156
1157                 switch (option_type) {
1158                 case UPGT_EEPROM_TYPE_NAME:
1159                         DPRINTF(sc, UPGT_DEBUG_FW,
1160                             "EEPROM name len=%d\n", option_len);
1161                         break;
1162                 case UPGT_EEPROM_TYPE_SERIAL:
1163                         DPRINTF(sc, UPGT_DEBUG_FW,
1164                             "EEPROM serial len=%d\n", option_len);
1165                         break;
1166                 case UPGT_EEPROM_TYPE_MAC:
1167                         DPRINTF(sc, UPGT_DEBUG_FW,
1168                             "EEPROM mac len=%d\n", option_len);
1169
1170                         IEEE80211_ADDR_COPY(sc->sc_myaddr, eeprom_option->data);
1171                         break;
1172                 case UPGT_EEPROM_TYPE_HWRX:
1173                         DPRINTF(sc, UPGT_DEBUG_FW,
1174                             "EEPROM hwrx len=%d\n", option_len);
1175
1176                         upgt_eeprom_parse_hwrx(sc, eeprom_option->data);
1177                         break;
1178                 case UPGT_EEPROM_TYPE_CHIP:
1179                         DPRINTF(sc, UPGT_DEBUG_FW,
1180                             "EEPROM chip len=%d\n", option_len);
1181                         break;
1182                 case UPGT_EEPROM_TYPE_FREQ3:
1183                         DPRINTF(sc, UPGT_DEBUG_FW,
1184                             "EEPROM freq3 len=%d\n", option_len);
1185
1186                         upgt_eeprom_parse_freq3(sc, eeprom_option->data,
1187                             option_len);
1188                         break;
1189                 case UPGT_EEPROM_TYPE_FREQ4:
1190                         DPRINTF(sc, UPGT_DEBUG_FW,
1191                             "EEPROM freq4 len=%d\n", option_len);
1192
1193                         upgt_eeprom_parse_freq4(sc, eeprom_option->data,
1194                             option_len);
1195                         break;
1196                 case UPGT_EEPROM_TYPE_FREQ5:
1197                         DPRINTF(sc, UPGT_DEBUG_FW,
1198                             "EEPROM freq5 len=%d\n", option_len);
1199                         break;
1200                 case UPGT_EEPROM_TYPE_FREQ6:
1201                         DPRINTF(sc, UPGT_DEBUG_FW,
1202                             "EEPROM freq6 len=%d\n", option_len);
1203
1204                         upgt_eeprom_parse_freq6(sc, eeprom_option->data,
1205                             option_len);
1206                         break;
1207                 case UPGT_EEPROM_TYPE_END:
1208                         DPRINTF(sc, UPGT_DEBUG_FW,
1209                             "EEPROM end len=%d\n", option_len);
1210                         option_end = 1;
1211                         break;
1212                 case UPGT_EEPROM_TYPE_OFF:
1213                         DPRINTF(sc, UPGT_DEBUG_FW,
1214                             "%s: EEPROM off without end option\n", __func__);
1215                         return (EIO);
1216                 default:
1217                         DPRINTF(sc, UPGT_DEBUG_FW,
1218                             "EEPROM unknown type 0x%04x len=%d\n",
1219                             option_type, option_len);
1220                         break;
1221                 }
1222
1223                 /* jump to next EEPROM option */
1224                 eeprom_option = (struct upgt_eeprom_option *)
1225                     (eeprom_option->data + option_len);
1226         }
1227         return (0);
1228 }
1229
1230 static void
1231 upgt_eeprom_parse_freq3(struct upgt_softc *sc, uint8_t *data, int len)
1232 {
1233         struct upgt_eeprom_freq3_header *freq3_header;
1234         struct upgt_lmac_freq3 *freq3;
1235         int i;
1236         int elements;
1237         int flags;
1238         unsigned channel;
1239
1240         freq3_header = (struct upgt_eeprom_freq3_header *)data;
1241         freq3 = (struct upgt_lmac_freq3 *)(freq3_header + 1);
1242
1243         flags = freq3_header->flags;
1244         elements = freq3_header->elements;
1245
1246         DPRINTF(sc, UPGT_DEBUG_FW, "flags=0x%02x elements=%d\n",
1247             flags, elements);
1248
1249         if (elements >= (int)(UPGT_EEPROM_SIZE / sizeof(freq3[0])))
1250                 return;
1251
1252         for (i = 0; i < elements; i++) {
1253                 channel = ieee80211_mhz2ieee(le16toh(freq3[i].freq), 0);
1254                 if (channel >= IEEE80211_CHAN_MAX)
1255                         continue;
1256
1257                 sc->sc_eeprom_freq3[channel] = freq3[i];
1258
1259                 DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
1260                     le16toh(sc->sc_eeprom_freq3[channel].freq), channel);
1261         }
1262 }
1263
1264 void
1265 upgt_eeprom_parse_freq4(struct upgt_softc *sc, uint8_t *data, int len)
1266 {
1267         struct upgt_eeprom_freq4_header *freq4_header;
1268         struct upgt_eeprom_freq4_1 *freq4_1;
1269         struct upgt_eeprom_freq4_2 *freq4_2;
1270         int i;
1271         int j;
1272         int elements;
1273         int settings;
1274         int flags;
1275         unsigned channel;
1276
1277         freq4_header = (struct upgt_eeprom_freq4_header *)data;
1278         freq4_1 = (struct upgt_eeprom_freq4_1 *)(freq4_header + 1);
1279         flags = freq4_header->flags;
1280         elements = freq4_header->elements;
1281         settings = freq4_header->settings;
1282
1283         /* we need this value later */
1284         sc->sc_eeprom_freq6_settings = freq4_header->settings;
1285
1286         DPRINTF(sc, UPGT_DEBUG_FW, "flags=0x%02x elements=%d settings=%d\n",
1287             flags, elements, settings);
1288
1289         if (elements >= (int)(UPGT_EEPROM_SIZE / sizeof(freq4_1[0])))
1290                 return;
1291
1292         for (i = 0; i < elements; i++) {
1293                 channel = ieee80211_mhz2ieee(le16toh(freq4_1[i].freq), 0);
1294                 if (channel >= IEEE80211_CHAN_MAX)
1295                         continue;
1296
1297                 freq4_2 = (struct upgt_eeprom_freq4_2 *)freq4_1[i].data;
1298                 for (j = 0; j < settings; j++) {
1299                         sc->sc_eeprom_freq4[channel][j].cmd = freq4_2[j];
1300                         sc->sc_eeprom_freq4[channel][j].pad = 0;
1301                 }
1302
1303                 DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
1304                     le16toh(freq4_1[i].freq), channel);
1305         }
1306 }
1307
1308 void
1309 upgt_eeprom_parse_freq6(struct upgt_softc *sc, uint8_t *data, int len)
1310 {
1311         struct upgt_lmac_freq6 *freq6;
1312         int i;
1313         int elements;
1314         unsigned channel;
1315
1316         freq6 = (struct upgt_lmac_freq6 *)data;
1317         elements = len / sizeof(struct upgt_lmac_freq6);
1318
1319         DPRINTF(sc, UPGT_DEBUG_FW, "elements=%d\n", elements);
1320
1321         if (elements >= (int)(UPGT_EEPROM_SIZE / sizeof(freq6[0])))
1322                 return;
1323
1324         for (i = 0; i < elements; i++) {
1325                 channel = ieee80211_mhz2ieee(le16toh(freq6[i].freq), 0);
1326                 if (channel >= IEEE80211_CHAN_MAX)
1327                         continue;
1328
1329                 sc->sc_eeprom_freq6[channel] = freq6[i];
1330
1331                 DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
1332                     le16toh(sc->sc_eeprom_freq6[channel].freq), channel);
1333         }
1334 }
1335
1336 static void
1337 upgt_eeprom_parse_hwrx(struct upgt_softc *sc, uint8_t *data)
1338 {
1339         struct upgt_eeprom_option_hwrx *option_hwrx;
1340
1341         option_hwrx = (struct upgt_eeprom_option_hwrx *)data;
1342
1343         sc->sc_eeprom_hwrx = option_hwrx->rxfilter - UPGT_EEPROM_RX_CONST;
1344
1345         DPRINTF(sc, UPGT_DEBUG_FW, "hwrx option value=0x%04x\n",
1346             sc->sc_eeprom_hwrx);
1347 }
1348
1349 static int
1350 upgt_eeprom_read(struct upgt_softc *sc)
1351 {
1352         struct upgt_data *data_cmd;
1353         struct upgt_lmac_mem *mem;
1354         struct upgt_lmac_eeprom *eeprom;
1355         int block, error, offset;
1356
1357         UPGT_LOCK(sc);
1358         usb_pause_mtx(&sc->sc_mtx, 100);
1359
1360         offset = 0;
1361         block = UPGT_EEPROM_BLOCK_SIZE;
1362         while (offset < UPGT_EEPROM_SIZE) {
1363                 DPRINTF(sc, UPGT_DEBUG_FW,
1364                     "request EEPROM block (offset=%d, len=%d)\n", offset, block);
1365
1366                 data_cmd = upgt_getbuf(sc);
1367                 if (data_cmd == NULL) {
1368                         UPGT_UNLOCK(sc);
1369                         return (ENOBUFS);
1370                 }
1371
1372                 /*
1373                  * Transmit the URB containing the CMD data.
1374                  */
1375                 memset(data_cmd->buf, 0, MCLBYTES);
1376
1377                 mem = (struct upgt_lmac_mem *)data_cmd->buf;
1378                 mem->addr = htole32(sc->sc_memaddr_frame_start +
1379                     UPGT_MEMSIZE_FRAME_HEAD);
1380
1381                 eeprom = (struct upgt_lmac_eeprom *)(mem + 1);
1382                 eeprom->header1.flags = 0;
1383                 eeprom->header1.type = UPGT_H1_TYPE_CTRL;
1384                 eeprom->header1.len = htole16((
1385                     sizeof(struct upgt_lmac_eeprom) -
1386                     sizeof(struct upgt_lmac_header)) + block);
1387
1388                 eeprom->header2.reqid = htole32(sc->sc_memaddr_frame_start);
1389                 eeprom->header2.type = htole16(UPGT_H2_TYPE_EEPROM);
1390                 eeprom->header2.flags = 0;
1391
1392                 eeprom->offset = htole16(offset);
1393                 eeprom->len = htole16(block);
1394
1395                 data_cmd->buflen = sizeof(*mem) + sizeof(*eeprom) + block;
1396
1397                 mem->chksum = upgt_chksum_le((uint32_t *)eeprom,
1398                     data_cmd->buflen - sizeof(*mem));
1399                 upgt_bulk_tx(sc, data_cmd);
1400
1401                 error = mtx_sleep(sc, &sc->sc_mtx, 0, "eeprom_request", hz);
1402                 if (error != 0) {
1403                         device_printf(sc->sc_dev,
1404                             "timeout while waiting for EEPROM data\n");
1405                         UPGT_UNLOCK(sc);
1406                         return (EIO);
1407                 }
1408
1409                 offset += block;
1410                 if (UPGT_EEPROM_SIZE - offset < block)
1411                         block = UPGT_EEPROM_SIZE - offset;
1412         }
1413
1414         UPGT_UNLOCK(sc);
1415         return (0);
1416 }
1417
1418 /*
1419  * When a rx data came in the function returns a mbuf and a rssi values.
1420  */
1421 static struct mbuf *
1422 upgt_rxeof(struct usb_xfer *xfer, struct upgt_data *data, int *rssi)
1423 {
1424         struct mbuf *m = NULL;
1425         struct upgt_softc *sc = usbd_xfer_softc(xfer);
1426         struct upgt_lmac_header *header;
1427         struct upgt_lmac_eeprom *eeprom;
1428         uint8_t h1_type;
1429         uint16_t h2_type;
1430         int actlen, sumlen;
1431
1432         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
1433
1434         UPGT_ASSERT_LOCKED(sc);
1435
1436         if (actlen < 1)
1437                 return (NULL);
1438
1439         /* Check only at the very beginning.  */
1440         if (!(sc->sc_flags & UPGT_FLAG_FWLOADED) &&
1441             (memcmp(data->buf, "OK", 2) == 0)) {
1442                 sc->sc_flags |= UPGT_FLAG_FWLOADED;
1443                 wakeup_one(sc);
1444                 return (NULL);
1445         }
1446
1447         if (actlen < (int)UPGT_RX_MINSZ)
1448                 return (NULL);
1449
1450         /*
1451          * Check what type of frame came in.
1452          */
1453         header = (struct upgt_lmac_header *)(data->buf + 4);
1454
1455         h1_type = header->header1.type;
1456         h2_type = le16toh(header->header2.type);
1457
1458         if (h1_type == UPGT_H1_TYPE_CTRL && h2_type == UPGT_H2_TYPE_EEPROM) {
1459                 eeprom = (struct upgt_lmac_eeprom *)(data->buf + 4);
1460                 uint16_t eeprom_offset = le16toh(eeprom->offset);
1461                 uint16_t eeprom_len = le16toh(eeprom->len);
1462
1463                 DPRINTF(sc, UPGT_DEBUG_FW,
1464                     "received EEPROM block (offset=%d, len=%d)\n",
1465                     eeprom_offset, eeprom_len);
1466
1467                 memcpy(sc->sc_eeprom + eeprom_offset,
1468                     data->buf + sizeof(struct upgt_lmac_eeprom) + 4,
1469                     eeprom_len);
1470
1471                 /* EEPROM data has arrived in time, wakeup.  */
1472                 wakeup(sc);
1473         } else if (h1_type == UPGT_H1_TYPE_CTRL &&
1474             h2_type == UPGT_H2_TYPE_TX_DONE) {
1475                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: received 802.11 TX done\n",
1476                     __func__);
1477                 upgt_tx_done(sc, data->buf + 4);
1478         } else if (h1_type == UPGT_H1_TYPE_RX_DATA ||
1479             h1_type == UPGT_H1_TYPE_RX_DATA_MGMT) {
1480                 DPRINTF(sc, UPGT_DEBUG_RECV, "%s: received 802.11 RX data\n",
1481                     __func__);
1482                 m = upgt_rx(sc, data->buf + 4, le16toh(header->header1.len),
1483                     rssi);
1484         } else if (h1_type == UPGT_H1_TYPE_CTRL &&
1485             h2_type == UPGT_H2_TYPE_STATS) {
1486                 DPRINTF(sc, UPGT_DEBUG_STAT, "%s: received statistic data\n",
1487                     __func__);
1488                 /* TODO: what could we do with the statistic data? */
1489         } else {
1490                 /* ignore unknown frame types */
1491                 DPRINTF(sc, UPGT_DEBUG_INTR,
1492                     "received unknown frame type 0x%02x\n",
1493                     header->header1.type);
1494         }
1495         return (m);
1496 }
1497
1498 /*
1499  * The firmware awaits a checksum for each frame we send to it.
1500  * The algorithm used therefor is uncommon but somehow similar to CRC32.
1501  */
1502 static uint32_t
1503 upgt_chksum_le(const uint32_t *buf, size_t size)
1504 {
1505         size_t i;
1506         uint32_t crc = 0;
1507
1508         for (i = 0; i < size; i += sizeof(uint32_t)) {
1509                 crc = htole32(crc ^ *buf++);
1510                 crc = htole32((crc >> 5) ^ (crc << 3));
1511         }
1512
1513         return (crc);
1514 }
1515
1516 static struct mbuf *
1517 upgt_rx(struct upgt_softc *sc, uint8_t *data, int pkglen, int *rssi)
1518 {
1519         struct ifnet *ifp = sc->sc_ifp;
1520         struct ieee80211com *ic = ifp->if_l2com;
1521         struct upgt_lmac_rx_desc *rxdesc;
1522         struct mbuf *m;
1523
1524         /*
1525          * don't pass packets to the ieee80211 framework if the driver isn't
1526          * RUNNING.
1527          */
1528         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
1529                 return (NULL);
1530
1531         /* access RX packet descriptor */
1532         rxdesc = (struct upgt_lmac_rx_desc *)data;
1533
1534         /* create mbuf which is suitable for strict alignment archs */
1535         KASSERT((pkglen + ETHER_ALIGN) < MCLBYTES,
1536             ("A current mbuf storage is small (%d)", pkglen + ETHER_ALIGN));
1537         m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1538         if (m == NULL) {
1539                 device_printf(sc->sc_dev, "could not create RX mbuf\n");
1540                 return (NULL);
1541         }
1542         m_adj(m, ETHER_ALIGN);
1543         memcpy(mtod(m, char *), rxdesc->data, pkglen);
1544         /* trim FCS */
1545         m->m_len = m->m_pkthdr.len = pkglen - IEEE80211_CRC_LEN;
1546         m->m_pkthdr.rcvif = ifp;
1547
1548         if (ieee80211_radiotap_active(ic)) {
1549                 struct upgt_rx_radiotap_header *tap = &sc->sc_rxtap;
1550
1551                 tap->wr_flags = 0;
1552                 tap->wr_rate = upgt_rx_rate(sc, rxdesc->rate);
1553                 tap->wr_antsignal = rxdesc->rssi;
1554         }
1555         ifp->if_ipackets++;
1556
1557         DPRINTF(sc, UPGT_DEBUG_RX_PROC, "%s: RX done\n", __func__);
1558         *rssi = rxdesc->rssi;
1559         return (m);
1560 }
1561
1562 static uint8_t
1563 upgt_rx_rate(struct upgt_softc *sc, const int rate)
1564 {
1565         struct ifnet *ifp = sc->sc_ifp;
1566         struct ieee80211com *ic = ifp->if_l2com;
1567         static const uint8_t cck_upgt2rate[4] = { 2, 4, 11, 22 };
1568         static const uint8_t ofdm_upgt2rate[12] =
1569             { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 };
1570
1571         if (ic->ic_curmode == IEEE80211_MODE_11B &&
1572             !(rate < 0 || rate > 3))
1573                 return cck_upgt2rate[rate & 0xf];
1574
1575         if (ic->ic_curmode == IEEE80211_MODE_11G &&
1576             !(rate < 0 || rate > 11))
1577                 return ofdm_upgt2rate[rate & 0xf];
1578
1579         return (0);
1580 }
1581
1582 static void
1583 upgt_tx_done(struct upgt_softc *sc, uint8_t *data)
1584 {
1585         struct ifnet *ifp = sc->sc_ifp;
1586         struct upgt_lmac_tx_done_desc *desc;
1587         int i, freed = 0;
1588
1589         UPGT_ASSERT_LOCKED(sc);
1590
1591         desc = (struct upgt_lmac_tx_done_desc *)data;
1592
1593         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
1594                 struct upgt_data *data_tx = &sc->sc_tx_data[i];
1595
1596                 if (data_tx->addr == le32toh(desc->header2.reqid)) {
1597                         upgt_mem_free(sc, data_tx->addr);
1598                         data_tx->ni = NULL;
1599                         data_tx->addr = 0;
1600                         data_tx->m = NULL;
1601
1602                         DPRINTF(sc, UPGT_DEBUG_TX_PROC,
1603                             "TX done: memaddr=0x%08x, status=0x%04x, rssi=%d, ",
1604                             le32toh(desc->header2.reqid),
1605                             le16toh(desc->status), le16toh(desc->rssi));
1606                         DPRINTF(sc, UPGT_DEBUG_TX_PROC, "seq=%d\n",
1607                             le16toh(desc->seq));
1608
1609                         freed++;
1610                 }
1611         }
1612
1613         if (freed != 0) {
1614                 sc->sc_tx_timer = 0;
1615                 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1616                 UPGT_UNLOCK(sc);
1617                 upgt_start(ifp);
1618                 UPGT_LOCK(sc);
1619         }
1620 }
1621
1622 static void
1623 upgt_mem_free(struct upgt_softc *sc, uint32_t addr)
1624 {
1625         int i;
1626
1627         for (i = 0; i < sc->sc_memory.pages; i++) {
1628                 if (sc->sc_memory.page[i].addr == addr) {
1629                         sc->sc_memory.page[i].used = 0;
1630                         return;
1631                 }
1632         }
1633
1634         device_printf(sc->sc_dev,
1635             "could not free memory address 0x%08x\n", addr);
1636 }
1637
1638 static int
1639 upgt_fw_load(struct upgt_softc *sc)
1640 {
1641         const struct firmware *fw;
1642         struct upgt_data *data_cmd;
1643         struct upgt_fw_x2_header *x2;
1644         char start_fwload_cmd[] = { 0x3c, 0x0d };
1645         int error = 0;
1646         size_t offset;
1647         int bsize;
1648         int n;
1649         uint32_t crc32;
1650
1651         fw = firmware_get(upgt_fwname);
1652         if (fw == NULL) {
1653                 device_printf(sc->sc_dev, "could not read microcode %s\n",
1654                     upgt_fwname);
1655                 return (EIO);
1656         }
1657
1658         UPGT_LOCK(sc);
1659
1660         /* send firmware start load command */
1661         data_cmd = upgt_getbuf(sc);
1662         if (data_cmd == NULL) {
1663                 error = ENOBUFS;
1664                 goto fail;
1665         }
1666         data_cmd->buflen = sizeof(start_fwload_cmd);
1667         memcpy(data_cmd->buf, start_fwload_cmd, data_cmd->buflen);
1668         upgt_bulk_tx(sc, data_cmd);
1669
1670         /* send X2 header */
1671         data_cmd = upgt_getbuf(sc);
1672         if (data_cmd == NULL) {
1673                 error = ENOBUFS;
1674                 goto fail;
1675         }
1676         data_cmd->buflen = sizeof(struct upgt_fw_x2_header);
1677         x2 = (struct upgt_fw_x2_header *)data_cmd->buf;
1678         memcpy(x2->signature, UPGT_X2_SIGNATURE, UPGT_X2_SIGNATURE_SIZE);
1679         x2->startaddr = htole32(UPGT_MEMADDR_FIRMWARE_START);
1680         x2->len = htole32(fw->datasize);
1681         x2->crc = upgt_crc32_le((uint8_t *)data_cmd->buf +
1682             UPGT_X2_SIGNATURE_SIZE,
1683             sizeof(struct upgt_fw_x2_header) - UPGT_X2_SIGNATURE_SIZE -
1684             sizeof(uint32_t));
1685         upgt_bulk_tx(sc, data_cmd);
1686
1687         /* download firmware */
1688         for (offset = 0; offset < fw->datasize; offset += bsize) {
1689                 if (fw->datasize - offset > UPGT_FW_BLOCK_SIZE)
1690                         bsize = UPGT_FW_BLOCK_SIZE;
1691                 else
1692                         bsize = fw->datasize - offset;
1693
1694                 data_cmd = upgt_getbuf(sc);
1695                 if (data_cmd == NULL) {
1696                         error = ENOBUFS;
1697                         goto fail;
1698                 }
1699                 n = upgt_fw_copy((const uint8_t *)fw->data + offset,
1700                     data_cmd->buf, bsize);
1701                 data_cmd->buflen = bsize;
1702                 upgt_bulk_tx(sc, data_cmd);
1703
1704                 DPRINTF(sc, UPGT_DEBUG_FW, "FW offset=%d, read=%d, sent=%d\n",
1705                     offset, n, bsize);
1706                 bsize = n;
1707         }
1708         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware downloaded\n", __func__);
1709
1710         /* load firmware */
1711         data_cmd = upgt_getbuf(sc);
1712         if (data_cmd == NULL) {
1713                 error = ENOBUFS;
1714                 goto fail;
1715         }
1716         crc32 = upgt_crc32_le(fw->data, fw->datasize);
1717         *((uint32_t *)(data_cmd->buf)    ) = crc32;
1718         *((uint8_t  *)(data_cmd->buf) + 4) = 'g';
1719         *((uint8_t  *)(data_cmd->buf) + 5) = '\r';
1720         data_cmd->buflen = 6;
1721         upgt_bulk_tx(sc, data_cmd);
1722
1723         /* waiting 'OK' response.  */
1724         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_RX]);
1725         error = mtx_sleep(sc, &sc->sc_mtx, 0, "upgtfw", 2 * hz);
1726         if (error != 0) {
1727                 device_printf(sc->sc_dev, "firmware load failed\n");
1728                 error = EIO;
1729         }
1730
1731         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware loaded\n", __func__);
1732 fail:
1733         UPGT_UNLOCK(sc);
1734         firmware_put(fw, FIRMWARE_UNLOAD);
1735         return (error);
1736 }
1737
1738 static uint32_t
1739 upgt_crc32_le(const void *buf, size_t size)
1740 {
1741         uint32_t crc;
1742
1743         crc = ether_crc32_le(buf, size);
1744
1745         /* apply final XOR value as common for CRC-32 */
1746         crc = htole32(crc ^ 0xffffffffU);
1747
1748         return (crc);
1749 }
1750
1751 /*
1752  * While copying the version 2 firmware, we need to replace two characters:
1753  *
1754  * 0x7e -> 0x7d 0x5e
1755  * 0x7d -> 0x7d 0x5d
1756  */
1757 static int
1758 upgt_fw_copy(const uint8_t *src, char *dst, int size)
1759 {
1760         int i, j;
1761
1762         for (i = 0, j = 0; i < size && j < size; i++) {
1763                 switch (src[i]) {
1764                 case 0x7e:
1765                         dst[j] = 0x7d;
1766                         j++;
1767                         dst[j] = 0x5e;
1768                         j++;
1769                         break;
1770                 case 0x7d:
1771                         dst[j] = 0x7d;
1772                         j++;
1773                         dst[j] = 0x5d;
1774                         j++;
1775                         break;
1776                 default:
1777                         dst[j] = src[i];
1778                         j++;
1779                         break;
1780                 }
1781         }
1782
1783         return (i);
1784 }
1785
1786 static int
1787 upgt_mem_init(struct upgt_softc *sc)
1788 {
1789         int i;
1790
1791         for (i = 0; i < UPGT_MEMORY_MAX_PAGES; i++) {
1792                 sc->sc_memory.page[i].used = 0;
1793
1794                 if (i == 0) {
1795                         /*
1796                          * The first memory page is always reserved for
1797                          * command data.
1798                          */
1799                         sc->sc_memory.page[i].addr =
1800                             sc->sc_memaddr_frame_start + MCLBYTES;
1801                 } else {
1802                         sc->sc_memory.page[i].addr =
1803                             sc->sc_memory.page[i - 1].addr + MCLBYTES;
1804                 }
1805
1806                 if (sc->sc_memory.page[i].addr + MCLBYTES >=
1807                     sc->sc_memaddr_frame_end)
1808                         break;
1809
1810                 DPRINTF(sc, UPGT_DEBUG_FW, "memory address page %d=0x%08x\n",
1811                     i, sc->sc_memory.page[i].addr);
1812         }
1813
1814         sc->sc_memory.pages = i;
1815
1816         DPRINTF(sc, UPGT_DEBUG_FW, "memory pages=%d\n", sc->sc_memory.pages);
1817         return (0);
1818 }
1819
1820 static int
1821 upgt_fw_verify(struct upgt_softc *sc)
1822 {
1823         const struct firmware *fw;
1824         const struct upgt_fw_bra_option *bra_opt;
1825         const struct upgt_fw_bra_descr *descr;
1826         const uint8_t *p;
1827         const uint32_t *uc;
1828         uint32_t bra_option_type, bra_option_len;
1829         size_t offset;
1830         int bra_end = 0;
1831         int error = 0;
1832
1833         fw = firmware_get(upgt_fwname);
1834         if (fw == NULL) {
1835                 device_printf(sc->sc_dev, "could not read microcode %s\n",
1836                     upgt_fwname);
1837                 return EIO;
1838         }
1839
1840         /*
1841          * Seek to beginning of Boot Record Area (BRA).
1842          */
1843         for (offset = 0; offset < fw->datasize; offset += sizeof(*uc)) {
1844                 uc = (const uint32_t *)((const uint8_t *)fw->data + offset);
1845                 if (*uc == 0)
1846                         break;
1847         }
1848         for (; offset < fw->datasize; offset += sizeof(*uc)) {
1849                 uc = (const uint32_t *)((const uint8_t *)fw->data + offset);
1850                 if (*uc != 0)
1851                         break;
1852         }
1853         if (offset == fw->datasize) {
1854                 device_printf(sc->sc_dev,
1855                     "firmware Boot Record Area not found\n");
1856                 error = EIO;
1857                 goto fail;
1858         }
1859
1860         DPRINTF(sc, UPGT_DEBUG_FW,
1861             "firmware Boot Record Area found at offset %d\n", offset);
1862
1863         /*
1864          * Parse Boot Record Area (BRA) options.
1865          */
1866         while (offset < fw->datasize && bra_end == 0) {
1867                 /* get current BRA option */
1868                 p = (const uint8_t *)fw->data + offset;
1869                 bra_opt = (const struct upgt_fw_bra_option *)p;
1870                 bra_option_type = le32toh(bra_opt->type);
1871                 bra_option_len = le32toh(bra_opt->len) * sizeof(*uc);
1872
1873                 switch (bra_option_type) {
1874                 case UPGT_BRA_TYPE_FW:
1875                         DPRINTF(sc, UPGT_DEBUG_FW, "UPGT_BRA_TYPE_FW len=%d\n",
1876                             bra_option_len);
1877
1878                         if (bra_option_len != UPGT_BRA_FWTYPE_SIZE) {
1879                                 device_printf(sc->sc_dev,
1880                                     "wrong UPGT_BRA_TYPE_FW len\n");
1881                                 error = EIO;
1882                                 goto fail;
1883                         }
1884                         if (memcmp(UPGT_BRA_FWTYPE_LM86, bra_opt->data,
1885                             bra_option_len) == 0) {
1886                                 sc->sc_fw_type = UPGT_FWTYPE_LM86;
1887                                 break;
1888                         }
1889                         if (memcmp(UPGT_BRA_FWTYPE_LM87, bra_opt->data,
1890                             bra_option_len) == 0) {
1891                                 sc->sc_fw_type = UPGT_FWTYPE_LM87;
1892                                 break;
1893                         }
1894                         device_printf(sc->sc_dev,
1895                             "unsupported firmware type\n");
1896                         error = EIO;
1897                         goto fail;
1898                 case UPGT_BRA_TYPE_VERSION:
1899                         DPRINTF(sc, UPGT_DEBUG_FW,
1900                             "UPGT_BRA_TYPE_VERSION len=%d\n", bra_option_len);
1901                         break;
1902                 case UPGT_BRA_TYPE_DEPIF:
1903                         DPRINTF(sc, UPGT_DEBUG_FW,
1904                             "UPGT_BRA_TYPE_DEPIF len=%d\n", bra_option_len);
1905                         break;
1906                 case UPGT_BRA_TYPE_EXPIF:
1907                         DPRINTF(sc, UPGT_DEBUG_FW,
1908                             "UPGT_BRA_TYPE_EXPIF len=%d\n", bra_option_len);
1909                         break;
1910                 case UPGT_BRA_TYPE_DESCR:
1911                         DPRINTF(sc, UPGT_DEBUG_FW,
1912                             "UPGT_BRA_TYPE_DESCR len=%d\n", bra_option_len);
1913
1914                         descr = (const struct upgt_fw_bra_descr *)bra_opt->data;
1915
1916                         sc->sc_memaddr_frame_start =
1917                             le32toh(descr->memaddr_space_start);
1918                         sc->sc_memaddr_frame_end =
1919                             le32toh(descr->memaddr_space_end);
1920
1921                         DPRINTF(sc, UPGT_DEBUG_FW,
1922                             "memory address space start=0x%08x\n",
1923                             sc->sc_memaddr_frame_start);
1924                         DPRINTF(sc, UPGT_DEBUG_FW,
1925                             "memory address space end=0x%08x\n",
1926                             sc->sc_memaddr_frame_end);
1927                         break;
1928                 case UPGT_BRA_TYPE_END:
1929                         DPRINTF(sc, UPGT_DEBUG_FW, "UPGT_BRA_TYPE_END len=%d\n",
1930                             bra_option_len);
1931                         bra_end = 1;
1932                         break;
1933                 default:
1934                         DPRINTF(sc, UPGT_DEBUG_FW, "unknown BRA option len=%d\n",
1935                             bra_option_len);
1936                         error = EIO;
1937                         goto fail;
1938                 }
1939
1940                 /* jump to next BRA option */
1941                 offset += sizeof(struct upgt_fw_bra_option) + bra_option_len;
1942         }
1943
1944         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware verified", __func__);
1945 fail:
1946         firmware_put(fw, FIRMWARE_UNLOAD);
1947         return (error);
1948 }
1949
1950 static void
1951 upgt_bulk_tx(struct upgt_softc *sc, struct upgt_data *data)
1952 {
1953
1954         UPGT_ASSERT_LOCKED(sc);
1955
1956         STAILQ_INSERT_TAIL(&sc->sc_tx_pending, data, next);
1957         UPGT_STAT_INC(sc, st_tx_pending);
1958         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_TX]);
1959 }
1960
1961 static int
1962 upgt_device_reset(struct upgt_softc *sc)
1963 {
1964         struct upgt_data *data;
1965         char init_cmd[] = { 0x7e, 0x7e, 0x7e, 0x7e };
1966
1967         UPGT_LOCK(sc);
1968
1969         data = upgt_getbuf(sc);
1970         if (data == NULL) {
1971                 UPGT_UNLOCK(sc);
1972                 return (ENOBUFS);
1973         }
1974         memcpy(data->buf, init_cmd, sizeof(init_cmd));
1975         data->buflen = sizeof(init_cmd);
1976         upgt_bulk_tx(sc, data);
1977         usb_pause_mtx(&sc->sc_mtx, 100);
1978
1979         UPGT_UNLOCK(sc);
1980         DPRINTF(sc, UPGT_DEBUG_FW, "%s: device initialized\n", __func__);
1981         return (0);
1982 }
1983
1984 static int
1985 upgt_alloc_tx(struct upgt_softc *sc)
1986 {
1987         int i;
1988
1989         STAILQ_INIT(&sc->sc_tx_active);
1990         STAILQ_INIT(&sc->sc_tx_inactive);
1991         STAILQ_INIT(&sc->sc_tx_pending);
1992
1993         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
1994                 struct upgt_data *data = &sc->sc_tx_data[i];
1995                 data->buf = ((uint8_t *)sc->sc_tx_dma_buf) + (i * MCLBYTES);
1996                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
1997                 UPGT_STAT_INC(sc, st_tx_inactive);
1998         }
1999
2000         return (0);
2001 }
2002
2003 static int
2004 upgt_alloc_rx(struct upgt_softc *sc)
2005 {
2006         int i;
2007
2008         STAILQ_INIT(&sc->sc_rx_active);
2009         STAILQ_INIT(&sc->sc_rx_inactive);
2010
2011         for (i = 0; i < UPGT_RX_MAXCOUNT; i++) {
2012                 struct upgt_data *data = &sc->sc_rx_data[i];
2013                 data->buf = ((uint8_t *)sc->sc_rx_dma_buf) + (i * MCLBYTES);
2014                 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2015         }
2016         return (0);
2017 }
2018
2019 static int
2020 upgt_detach(device_t dev)
2021 {
2022         struct upgt_softc *sc = device_get_softc(dev);
2023         struct ifnet *ifp = sc->sc_ifp;
2024         struct ieee80211com *ic = ifp->if_l2com;
2025         unsigned int x;
2026
2027         /*
2028          * Prevent further allocations from RX/TX/CMD
2029          * data lists and ioctls
2030          */
2031         UPGT_LOCK(sc);
2032         sc->sc_flags |= UPGT_FLAG_DETACHED;
2033
2034         STAILQ_INIT(&sc->sc_tx_active);
2035         STAILQ_INIT(&sc->sc_tx_inactive);
2036         STAILQ_INIT(&sc->sc_tx_pending);
2037
2038         STAILQ_INIT(&sc->sc_rx_active);
2039         STAILQ_INIT(&sc->sc_rx_inactive);
2040         UPGT_UNLOCK(sc);
2041
2042         upgt_stop(sc);
2043
2044         callout_drain(&sc->sc_led_ch);
2045         callout_drain(&sc->sc_watchdog_ch);
2046
2047         /* drain USB transfers */
2048         for (x = 0; x != UPGT_N_XFERS; x++)
2049                 usbd_transfer_drain(sc->sc_xfer[x]);
2050
2051         /* free data buffers */
2052         UPGT_LOCK(sc);
2053         upgt_free_rx(sc);
2054         upgt_free_tx(sc);
2055         UPGT_UNLOCK(sc);
2056
2057         /* free USB transfers and some data buffers */
2058         usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
2059
2060         ieee80211_ifdetach(ic);
2061         if_free(ifp);
2062         mtx_destroy(&sc->sc_mtx);
2063
2064         return (0);
2065 }
2066
2067 static void
2068 upgt_free_rx(struct upgt_softc *sc)
2069 {
2070         int i;
2071
2072         for (i = 0; i < UPGT_RX_MAXCOUNT; i++) {
2073                 struct upgt_data *data = &sc->sc_rx_data[i];
2074
2075                 data->buf = NULL;
2076                 data->ni = NULL;
2077         }
2078 }
2079
2080 static void
2081 upgt_free_tx(struct upgt_softc *sc)
2082 {
2083         int i;
2084
2085         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
2086                 struct upgt_data *data = &sc->sc_tx_data[i];
2087
2088                 if (data->ni != NULL)
2089                         ieee80211_free_node(data->ni);
2090
2091                 data->buf = NULL;
2092                 data->ni = NULL;
2093         }
2094 }
2095
2096 static void
2097 upgt_abort_xfers_locked(struct upgt_softc *sc)
2098 {
2099         int i;
2100
2101         UPGT_ASSERT_LOCKED(sc);
2102         /* abort any pending transfers */
2103         for (i = 0; i < UPGT_N_XFERS; i++)
2104                 usbd_transfer_stop(sc->sc_xfer[i]);
2105 }
2106
2107 static void
2108 upgt_abort_xfers(struct upgt_softc *sc)
2109 {
2110
2111         UPGT_LOCK(sc);
2112         upgt_abort_xfers_locked(sc);
2113         UPGT_UNLOCK(sc);
2114 }
2115
2116 #define UPGT_SYSCTL_STAT_ADD32(c, h, n, p, d)   \
2117             SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
2118
2119 static void
2120 upgt_sysctl_node(struct upgt_softc *sc)
2121 {
2122         struct sysctl_ctx_list *ctx;
2123         struct sysctl_oid_list *child;
2124         struct sysctl_oid *tree;
2125         struct upgt_stat *stats;
2126
2127         stats = &sc->sc_stat;
2128         ctx = device_get_sysctl_ctx(sc->sc_dev);
2129         child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->sc_dev));
2130
2131         tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
2132             NULL, "UPGT statistics");
2133         child = SYSCTL_CHILDREN(tree);
2134         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_active",
2135             &stats->st_tx_active, "Active numbers in TX queue");
2136         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_inactive",
2137             &stats->st_tx_inactive, "Inactive numbers in TX queue");
2138         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_pending",
2139             &stats->st_tx_pending, "Pending numbers in TX queue");
2140 }
2141
2142 #undef UPGT_SYSCTL_STAT_ADD32
2143
2144 static struct upgt_data *
2145 _upgt_getbuf(struct upgt_softc *sc)
2146 {
2147         struct upgt_data *bf;
2148
2149         bf = STAILQ_FIRST(&sc->sc_tx_inactive);
2150         if (bf != NULL) {
2151                 STAILQ_REMOVE_HEAD(&sc->sc_tx_inactive, next);
2152                 UPGT_STAT_DEC(sc, st_tx_inactive);
2153         } else
2154                 bf = NULL;
2155         if (bf == NULL)
2156                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: %s\n", __func__,
2157                     "out of xmit buffers");
2158         return (bf);
2159 }
2160
2161 static struct upgt_data *
2162 upgt_getbuf(struct upgt_softc *sc)
2163 {
2164         struct upgt_data *bf;
2165
2166         UPGT_ASSERT_LOCKED(sc);
2167
2168         bf = _upgt_getbuf(sc);
2169         if (bf == NULL) {
2170                 struct ifnet *ifp = sc->sc_ifp;
2171
2172                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: stop queue\n", __func__);
2173                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2174         }
2175
2176         return (bf);
2177 }
2178
2179 static struct upgt_data *
2180 upgt_gettxbuf(struct upgt_softc *sc)
2181 {
2182         struct upgt_data *bf;
2183
2184         UPGT_ASSERT_LOCKED(sc);
2185
2186         bf = upgt_getbuf(sc);
2187         if (bf == NULL)
2188                 return (NULL);
2189
2190         bf->addr = upgt_mem_alloc(sc);
2191         if (bf->addr == 0) {
2192                 struct ifnet *ifp = sc->sc_ifp;
2193
2194                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: no free prism memory!\n",
2195                     __func__);
2196                 STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, bf, next);
2197                 UPGT_STAT_INC(sc, st_tx_inactive);
2198                 if (!(ifp->if_drv_flags & IFF_DRV_OACTIVE))
2199                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2200                 return (NULL);
2201         }
2202         return (bf);
2203 }
2204
2205 static int
2206 upgt_tx_start(struct upgt_softc *sc, struct mbuf *m, struct ieee80211_node *ni,
2207     struct upgt_data *data)
2208 {
2209         struct ieee80211vap *vap = ni->ni_vap;
2210         int error = 0, len;
2211         struct ieee80211_frame *wh;
2212         struct ieee80211_key *k;
2213         struct ifnet *ifp = sc->sc_ifp;
2214         struct upgt_lmac_mem *mem;
2215         struct upgt_lmac_tx_desc *txdesc;
2216
2217         UPGT_ASSERT_LOCKED(sc);
2218
2219         upgt_set_led(sc, UPGT_LED_BLINK);
2220
2221         /*
2222          * Software crypto.
2223          */
2224         wh = mtod(m, struct ieee80211_frame *);
2225         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
2226                 k = ieee80211_crypto_encap(ni, m);
2227                 if (k == NULL) {
2228                         device_printf(sc->sc_dev,
2229                             "ieee80211_crypto_encap returns NULL.\n");
2230                         error = EIO;
2231                         goto done;
2232                 }
2233
2234                 /* in case packet header moved, reset pointer */
2235                 wh = mtod(m, struct ieee80211_frame *);
2236         }
2237
2238         /* Transmit the URB containing the TX data.  */
2239         memset(data->buf, 0, MCLBYTES);
2240         mem = (struct upgt_lmac_mem *)data->buf;
2241         mem->addr = htole32(data->addr);
2242         txdesc = (struct upgt_lmac_tx_desc *)(mem + 1);
2243
2244         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
2245             IEEE80211_FC0_TYPE_MGT) {
2246                 /* mgmt frames  */
2247                 txdesc->header1.flags = UPGT_H1_FLAGS_TX_MGMT;
2248                 /* always send mgmt frames at lowest rate (DS1) */
2249                 memset(txdesc->rates, 0x10, sizeof(txdesc->rates));
2250         } else {
2251                 /* data frames  */
2252                 txdesc->header1.flags = UPGT_H1_FLAGS_TX_DATA;
2253                 memcpy(txdesc->rates, sc->sc_cur_rateset, sizeof(txdesc->rates));
2254         }
2255         txdesc->header1.type = UPGT_H1_TYPE_TX_DATA;
2256         txdesc->header1.len = htole16(m->m_pkthdr.len);
2257         txdesc->header2.reqid = htole32(data->addr);
2258         txdesc->header2.type = htole16(UPGT_H2_TYPE_TX_ACK_YES);
2259         txdesc->header2.flags = htole16(UPGT_H2_FLAGS_TX_ACK_YES);
2260         txdesc->type = htole32(UPGT_TX_DESC_TYPE_DATA);
2261         txdesc->pad3[0] = UPGT_TX_DESC_PAD3_SIZE;
2262
2263         if (ieee80211_radiotap_active_vap(vap)) {
2264                 struct upgt_tx_radiotap_header *tap = &sc->sc_txtap;
2265
2266                 tap->wt_flags = 0;
2267                 tap->wt_rate = 0;       /* XXX where to get from? */
2268
2269                 ieee80211_radiotap_tx(vap, m);
2270         }
2271
2272         /* copy frame below our TX descriptor header */
2273         m_copydata(m, 0, m->m_pkthdr.len,
2274             data->buf + (sizeof(*mem) + sizeof(*txdesc)));
2275         /* calculate frame size */
2276         len = sizeof(*mem) + sizeof(*txdesc) + m->m_pkthdr.len;
2277         /* we need to align the frame to a 4 byte boundary */
2278         len = (len + 3) & ~3;
2279         /* calculate frame checksum */
2280         mem->chksum = upgt_chksum_le((uint32_t *)txdesc, len - sizeof(*mem));
2281         data->ni = ni;
2282         data->m = m;
2283         data->buflen = len;
2284
2285         DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: TX start data sending (%d bytes)\n",
2286             __func__, len);
2287         KASSERT(len <= MCLBYTES, ("mbuf is small for saving data"));
2288
2289         upgt_bulk_tx(sc, data);
2290 done:
2291         /*
2292          * If we don't regulary read the device statistics, the RX queue
2293          * will stall.  It's strange, but it works, so we keep reading
2294          * the statistics here.  *shrug*
2295          */
2296         if (!(ifp->if_opackets % UPGT_TX_STAT_INTERVAL))
2297                 upgt_get_stats(sc);
2298
2299         return (error);
2300 }
2301
2302 static void
2303 upgt_bulk_rx_callback(struct usb_xfer *xfer, usb_error_t error)
2304 {
2305         struct upgt_softc *sc = usbd_xfer_softc(xfer);
2306         struct ifnet *ifp = sc->sc_ifp;
2307         struct ieee80211com *ic = ifp->if_l2com;
2308         struct ieee80211_frame *wh;
2309         struct ieee80211_node *ni;
2310         struct mbuf *m = NULL;
2311         struct upgt_data *data;
2312         int8_t nf;
2313         int rssi = -1;
2314
2315         UPGT_ASSERT_LOCKED(sc);
2316
2317         switch (USB_GET_STATE(xfer)) {
2318         case USB_ST_TRANSFERRED:
2319                 data = STAILQ_FIRST(&sc->sc_rx_active);
2320                 if (data == NULL)
2321                         goto setup;
2322                 STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2323                 m = upgt_rxeof(xfer, data, &rssi);
2324                 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2325                 /* FALLTHROUGH */
2326         case USB_ST_SETUP:
2327 setup:
2328                 data = STAILQ_FIRST(&sc->sc_rx_inactive);
2329                 if (data == NULL)
2330                         return;
2331                 STAILQ_REMOVE_HEAD(&sc->sc_rx_inactive, next);
2332                 STAILQ_INSERT_TAIL(&sc->sc_rx_active, data, next);
2333                 usbd_xfer_set_frame_data(xfer, 0, data->buf, MCLBYTES);
2334                 usbd_transfer_submit(xfer);
2335
2336                 /*
2337                  * To avoid LOR we should unlock our private mutex here to call
2338                  * ieee80211_input() because here is at the end of a USB
2339                  * callback and safe to unlock.
2340                  */
2341                 UPGT_UNLOCK(sc);
2342                 if (m != NULL) {
2343                         wh = mtod(m, struct ieee80211_frame *);
2344                         ni = ieee80211_find_rxnode(ic,
2345                             (struct ieee80211_frame_min *)wh);
2346                         nf = -95;       /* XXX */
2347                         if (ni != NULL) {
2348                                 (void) ieee80211_input(ni, m, rssi, nf);
2349                                 /* node is no longer needed */
2350                                 ieee80211_free_node(ni);
2351                         } else
2352                                 (void) ieee80211_input_all(ic, m, rssi, nf);
2353                         m = NULL;
2354                 }
2355                 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
2356                     !IFQ_IS_EMPTY(&ifp->if_snd))
2357                         upgt_start(ifp);
2358                 UPGT_LOCK(sc);
2359                 break;
2360         default:
2361                 /* needs it to the inactive queue due to a error.  */
2362                 data = STAILQ_FIRST(&sc->sc_rx_active);
2363                 if (data != NULL) {
2364                         STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2365                         STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2366                 }
2367                 if (error != USB_ERR_CANCELLED) {
2368                         usbd_xfer_set_stall(xfer);
2369                         ifp->if_ierrors++;
2370                         goto setup;
2371                 }
2372                 break;
2373         }
2374 }
2375
2376 static void
2377 upgt_bulk_tx_callback(struct usb_xfer *xfer, usb_error_t error)
2378 {
2379         struct upgt_softc *sc = usbd_xfer_softc(xfer);
2380         struct ifnet *ifp = sc->sc_ifp;
2381         struct upgt_data *data;
2382
2383         UPGT_ASSERT_LOCKED(sc);
2384         switch (USB_GET_STATE(xfer)) {
2385         case USB_ST_TRANSFERRED:
2386                 data = STAILQ_FIRST(&sc->sc_tx_active);
2387                 if (data == NULL)
2388                         goto setup;
2389                 STAILQ_REMOVE_HEAD(&sc->sc_tx_active, next);
2390                 UPGT_STAT_DEC(sc, st_tx_active);
2391                 upgt_txeof(xfer, data);
2392                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
2393                 UPGT_STAT_INC(sc, st_tx_inactive);
2394                 /* FALLTHROUGH */
2395         case USB_ST_SETUP:
2396 setup:
2397                 data = STAILQ_FIRST(&sc->sc_tx_pending);
2398                 if (data == NULL) {
2399                         DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: empty pending queue\n",
2400                             __func__);
2401                         return;
2402                 }
2403                 STAILQ_REMOVE_HEAD(&sc->sc_tx_pending, next);
2404                 UPGT_STAT_DEC(sc, st_tx_pending);
2405                 STAILQ_INSERT_TAIL(&sc->sc_tx_active, data, next);
2406                 UPGT_STAT_INC(sc, st_tx_active);
2407
2408                 usbd_xfer_set_frame_data(xfer, 0, data->buf, data->buflen);
2409                 usbd_transfer_submit(xfer);
2410                 UPGT_UNLOCK(sc);
2411                 upgt_start(ifp);
2412                 UPGT_LOCK(sc);
2413                 break;
2414         default:
2415                 data = STAILQ_FIRST(&sc->sc_tx_active);
2416                 if (data == NULL)
2417                         goto setup;
2418                 if (data->ni != NULL) {
2419                         ieee80211_free_node(data->ni);
2420                         data->ni = NULL;
2421                         ifp->if_oerrors++;
2422                 }
2423                 if (error != USB_ERR_CANCELLED) {
2424                         usbd_xfer_set_stall(xfer);
2425                         goto setup;
2426                 }
2427                 break;
2428         }
2429 }
2430
2431 static device_method_t upgt_methods[] = {
2432         /* Device interface */
2433         DEVMETHOD(device_probe, upgt_match),
2434         DEVMETHOD(device_attach, upgt_attach),
2435         DEVMETHOD(device_detach, upgt_detach),
2436         DEVMETHOD_END
2437 };
2438
2439 static driver_t upgt_driver = {
2440         .name = "upgt",
2441         .methods = upgt_methods,
2442         .size = sizeof(struct upgt_softc)
2443 };
2444
2445 static devclass_t upgt_devclass;
2446
2447 DRIVER_MODULE(if_upgt, uhub, upgt_driver, upgt_devclass, NULL, 0);
2448 MODULE_VERSION(if_upgt, 1);
2449 MODULE_DEPEND(if_upgt, usb, 1, 1, 1);
2450 MODULE_DEPEND(if_upgt, wlan, 1, 1, 1);
2451 MODULE_DEPEND(if_upgt, upgtfw_fw, 1, 1, 1);