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
  42 #include <net80211/ieee80211_var.h>
  43 #include <net80211/ieee80211_phy.h>
  44 #include <net80211/ieee80211_radiotap.h>
  45 #include <net80211/ieee80211_regdomain.h>
  46
  47 #include <net/bpf.h>
  48
  49 #include <dev/usb/usb.h>
  50 #include <dev/usb/usbdi.h>
  51 #include "usbdevs.h"
  52
  53 #include <dev/usb/wlan/if_upgtvar.h>
  54
  55 /*
  56  * Driver for the USB PrismGT devices.
  57  *
  58  * For now just USB 2.0 devices with the GW3887 chipset are supported.
  59  * The driver has been written based on the firmware version 2.13.1.0_LM87.
  60  *
  61  * TODO's:
  62  * - MONITOR mode test.
  63  * - Add HOSTAP mode.
  64  * - Add IBSS mode.
  65  * - Support the USB 1.0 devices (NET2280, ISL3880, ISL3886 chipsets).
  66  *
  67  * Parts of this driver has been influenced by reading the p54u driver
  68  * written by Jean-Baptiste Note <jean-baptiste.note@m4x.org> and
  69  * Sebastien Bourdeauducq <lekernel@prism54.org>.
  70  */
  71
  72 static SYSCTL_NODE(_hw, OID_AUTO, upgt, CTLFLAG_RD, 0,
  73     "USB PrismGT GW3887 driver parameters");
  74
  75 #ifdef UPGT_DEBUG
  76 int upgt_debug = 0;
  77 SYSCTL_INT(_hw_upgt, OID_AUTO, debug, CTLFLAG_RW | CTLFLAG_TUN, &upgt_debug,
  78             0, "control debugging printfs");
  79 TUNABLE_INT("hw.upgt.debug", &upgt_debug);
  80 enum {
  81         UPGT_DEBUG_XMIT         = 0x00000001,   /* basic xmit operation */
  82         UPGT_DEBUG_RECV         = 0x00000002,   /* basic recv operation */
  83         UPGT_DEBUG_RESET        = 0x00000004,   /* reset processing */
  84         UPGT_DEBUG_INTR         = 0x00000008,   /* INTR */
  85         UPGT_DEBUG_TX_PROC      = 0x00000010,   /* tx ISR proc */
  86         UPGT_DEBUG_RX_PROC      = 0x00000020,   /* rx ISR proc */
  87         UPGT_DEBUG_STATE        = 0x00000040,   /* 802.11 state transitions */
  88         UPGT_DEBUG_STAT         = 0x00000080,   /* statistic */
  89         UPGT_DEBUG_FW           = 0x00000100,   /* firmware */
  90         UPGT_DEBUG_ANY          = 0xffffffff
  91 };
  92 #define DPRINTF(sc, m, fmt, ...) do {                           \
  93         if (sc->sc_debug & (m))                                 \
  94                 printf(fmt, __VA_ARGS__);                       \
  95 } while (0)
  96 #else
  97 #define DPRINTF(sc, m, fmt, ...) do {                           \
  98         (void) sc;                                              \
  99 } while (0)
 100 #endif
 101
 102 /*
 103  * Prototypes.
 104  */
 105 static device_probe_t upgt_match;
 106 static device_attach_t upgt_attach;
 107 static device_detach_t upgt_detach;
 108 static int      upgt_alloc_tx(struct upgt_softc *);
 109 static int      upgt_alloc_rx(struct upgt_softc *);
 110 static int      upgt_device_reset(struct upgt_softc *);
 111 static void     upgt_bulk_tx(struct upgt_softc *, struct upgt_data *);
 112 static int      upgt_fw_verify(struct upgt_softc *);
 113 static int      upgt_mem_init(struct upgt_softc *);
 114 static int      upgt_fw_load(struct upgt_softc *);
 115 static int      upgt_fw_copy(const uint8_t *, char *, int);
 116 static uint32_t upgt_crc32_le(const void *, size_t);
 117 static struct mbuf *
 118                 upgt_rxeof(struct usb_xfer *, struct upgt_data *, int *);
 119 static struct mbuf *
 120                 upgt_rx(struct upgt_softc *, uint8_t *, int, int *);
 121 static void     upgt_txeof(struct usb_xfer *, struct upgt_data *);
 122 static int      upgt_eeprom_read(struct upgt_softc *);
 123 static int      upgt_eeprom_parse(struct upgt_softc *);
 124 static void     upgt_eeprom_parse_hwrx(struct upgt_softc *, uint8_t *);
 125 static void     upgt_eeprom_parse_freq3(struct upgt_softc *, uint8_t *, int);
 126 static void     upgt_eeprom_parse_freq4(struct upgt_softc *, uint8_t *, int);
 127 static void     upgt_eeprom_parse_freq6(struct upgt_softc *, uint8_t *, int);
 128 static uint32_t upgt_chksum_le(const uint32_t *, size_t);
 129 static void     upgt_tx_done(struct upgt_softc *, uint8_t *);
 130 static void     upgt_init(void *);
 131 static void     upgt_init_locked(struct upgt_softc *);
 132 static int      upgt_ioctl(struct ifnet *, u_long, caddr_t);
 133 static void     upgt_start(struct ifnet *);
 134 static int      upgt_raw_xmit(struct ieee80211_node *, struct mbuf *,
 135                     const struct ieee80211_bpf_params *);
 136 static void     upgt_scan_start(struct ieee80211com *);
 137 static void     upgt_scan_end(struct ieee80211com *);
 138 static void     upgt_set_channel(struct ieee80211com *);
 139 static struct ieee80211vap *upgt_vap_create(struct ieee80211com *,
 140                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
 141                     const uint8_t [IEEE80211_ADDR_LEN],
 142                     const uint8_t [IEEE80211_ADDR_LEN]);
 143 static void     upgt_vap_delete(struct ieee80211vap *);
 144 static void     upgt_update_mcast(struct ifnet *);
 145 static uint8_t  upgt_rx_rate(struct upgt_softc *, const int);
 146 static void     upgt_set_multi(void *);
 147 static void     upgt_stop(struct upgt_softc *);
 148 static void     upgt_setup_rates(struct ieee80211vap *, struct ieee80211com *);
 149 static int      upgt_set_macfilter(struct upgt_softc *, uint8_t);
 150 static int      upgt_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 151 static void     upgt_set_chan(struct upgt_softc *, struct ieee80211_channel *);
 152 static void     upgt_set_led(struct upgt_softc *, int);
 153 static void     upgt_set_led_blink(void *);
 154 static void     upgt_get_stats(struct upgt_softc *);
 155 static void     upgt_mem_free(struct upgt_softc *, uint32_t);
 156 static uint32_t upgt_mem_alloc(struct upgt_softc *);
 157 static void     upgt_free_tx(struct upgt_softc *);
 158 static void     upgt_free_rx(struct upgt_softc *);
 159 static void     upgt_watchdog(void *);
 160 static void     upgt_abort_xfers(struct upgt_softc *);
 161 static void     upgt_abort_xfers_locked(struct upgt_softc *);
 162 static void     upgt_sysctl_node(struct upgt_softc *);
 163 static struct upgt_data *
 164                 upgt_getbuf(struct upgt_softc *);
 165 static struct upgt_data *
 166                 upgt_gettxbuf(struct upgt_softc *);
 167 static int      upgt_tx_start(struct upgt_softc *, struct mbuf *,
 168                     struct ieee80211_node *, struct upgt_data *);
 169
 170 static const char *upgt_fwname = "upgt-gw3887";
 171
 172 static const STRUCT_USB_HOST_ID upgt_devs[] = {
 173 #define UPGT_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
 174         /* version 2 devices */
 175         UPGT_DEV(ACCTON,        PRISM_GT),
 176         UPGT_DEV(BELKIN,        F5D7050),
 177         UPGT_DEV(CISCOLINKSYS,  WUSB54AG),
 178         UPGT_DEV(CONCEPTRONIC,  PRISM_GT),
 179         UPGT_DEV(DELL,          PRISM_GT_1),
 180         UPGT_DEV(DELL,          PRISM_GT_2),
 181         UPGT_DEV(FSC,           E5400),
 182         UPGT_DEV(GLOBESPAN,     PRISM_GT_1),
 183         UPGT_DEV(GLOBESPAN,     PRISM_GT_2),
 184         UPGT_DEV(NETGEAR,       WG111V1_2),
 185         UPGT_DEV(INTERSIL,      PRISM_GT),
 186         UPGT_DEV(SMC,           2862WG),
 187         UPGT_DEV(USR,           USR5422),
 188         UPGT_DEV(WISTRONNEWEB,  UR045G),
 189         UPGT_DEV(XYRATEX,       PRISM_GT_1),
 190         UPGT_DEV(XYRATEX,       PRISM_GT_2),
 191         UPGT_DEV(ZCOM,          XG703A),
 192         UPGT_DEV(ZCOM,          XM142)
 193 };
 194
 195 static usb_callback_t upgt_bulk_rx_callback;
 196 static usb_callback_t upgt_bulk_tx_callback;
 197
 198 static const struct usb_config upgt_config[UPGT_N_XFERS] = {
 199         [UPGT_BULK_TX] = {
 200                 .type = UE_BULK,
 201                 .endpoint = UE_ADDR_ANY,
 202                 .direction = UE_DIR_OUT,
 203                 .bufsize = MCLBYTES * UPGT_TX_MAXCOUNT,
 204                 .flags = {
 205                         .force_short_xfer = 1,
 206                         .pipe_bof = 1
 207                 },
 208                 .callback = upgt_bulk_tx_callback,
 209                 .timeout = UPGT_USB_TIMEOUT,    /* ms */
 210         },
 211         [UPGT_BULK_RX] = {
 212                 .type = UE_BULK,
 213                 .endpoint = UE_ADDR_ANY,
 214                 .direction = UE_DIR_IN,
 215                 .bufsize = MCLBYTES * UPGT_RX_MAXCOUNT,
 216                 .flags = {
 217                         .pipe_bof = 1,
 218                         .short_xfer_ok = 1
 219                 },
 220                 .callback = upgt_bulk_rx_callback,
 221         },
 222 };
 223
 224 static int
 225 upgt_match(device_t dev)
 226 {
 227         struct usb_attach_arg *uaa = device_get_ivars(dev);
 228
 229         if (uaa->usb_mode != USB_MODE_HOST)
 230                 return (ENXIO);
 231         if (uaa->info.bConfigIndex != UPGT_CONFIG_INDEX)
 232                 return (ENXIO);
 233         if (uaa->info.bIfaceIndex != UPGT_IFACE_INDEX)
 234                 return (ENXIO);
 235
 236         return (usbd_lookup_id_by_uaa(upgt_devs, sizeof(upgt_devs), uaa));
 237 }
 238
 239 static int
 240 upgt_attach(device_t dev)
 241 {
 242         int error;
 243         struct ieee80211com *ic;
 244         struct ifnet *ifp;
 245         struct upgt_softc *sc = device_get_softc(dev);
 246         struct usb_attach_arg *uaa = device_get_ivars(dev);
 247         uint8_t bands, iface_index = UPGT_IFACE_INDEX;
 248
 249         sc->sc_dev = dev;
 250         sc->sc_udev = uaa->device;
 251 #ifdef UPGT_DEBUG
 252         sc->sc_debug = upgt_debug;
 253 #endif
 254         device_set_usb_desc(dev);
 255
 256         mtx_init(&sc->sc_mtx, device_get_nameunit(sc->sc_dev), MTX_NETWORK_LOCK,
 257             MTX_DEF);
 258         callout_init(&sc->sc_led_ch, 0);
 259         callout_init(&sc->sc_watchdog_ch, 0);
 260
 261         error = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer,
 262             upgt_config, UPGT_N_XFERS, sc, &sc->sc_mtx);
 263         if (error) {
 264                 device_printf(dev, "could not allocate USB transfers, "
 265                     "err=%s\n", usbd_errstr(error));
 266                 goto fail1;
 267         }
 268
 269         sc->sc_rx_dma_buf = usbd_xfer_get_frame_buffer(
 270             sc->sc_xfer[UPGT_BULK_RX], 0);
 271         sc->sc_tx_dma_buf = usbd_xfer_get_frame_buffer(
 272             sc->sc_xfer[UPGT_BULK_TX], 0);
 273
 274         /* Setup TX and RX buffers */
 275         error = upgt_alloc_tx(sc);
 276         if (error)
 277                 goto fail2;
 278         error = upgt_alloc_rx(sc);
 279         if (error)
 280                 goto fail3;
 281
 282         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 283         if (ifp == NULL) {
 284                 device_printf(dev, "can not if_alloc()\n");
 285                 goto fail4;
 286         }
 287
 288         /* Initialize the device.  */
 289         error = upgt_device_reset(sc);
 290         if (error)
 291                 goto fail5;
 292         /* Verify the firmware.  */
 293         error = upgt_fw_verify(sc);
 294         if (error)
 295                 goto fail5;
 296         /* Calculate device memory space.  */
 297         if (sc->sc_memaddr_frame_start == 0 || sc->sc_memaddr_frame_end == 0) {
 298                 device_printf(dev,
 299                     "could not find memory space addresses on FW\n");
 300                 error = EIO;
 301                 goto fail5;
 302         }
 303         sc->sc_memaddr_frame_end -= UPGT_MEMSIZE_RX + 1;
 304         sc->sc_memaddr_rx_start = sc->sc_memaddr_frame_end + 1;
 305
 306         DPRINTF(sc, UPGT_DEBUG_FW, "memory address frame start=0x%08x\n",
 307             sc->sc_memaddr_frame_start);
 308         DPRINTF(sc, UPGT_DEBUG_FW, "memory address frame end=0x%08x\n",
 309             sc->sc_memaddr_frame_end);
 310         DPRINTF(sc, UPGT_DEBUG_FW, "memory address rx start=0x%08x\n",
 311             sc->sc_memaddr_rx_start);
 312
 313         upgt_mem_init(sc);
 314
 315         /* Load the firmware.  */
 316         error = upgt_fw_load(sc);
 317         if (error)
 318                 goto fail5;
 319
 320         /* Read the whole EEPROM content and parse it.  */
 321         error = upgt_eeprom_read(sc);
 322         if (error)
 323                 goto fail5;
 324         error = upgt_eeprom_parse(sc);
 325         if (error)
 326                 goto fail5;
 327
 328         /* all works related with the device have done here. */
 329         upgt_abort_xfers(sc);
 330
 331         /* Setup the 802.11 device.  */
 332         ifp->if_softc = sc;
 333         if_initname(ifp, "upgt", device_get_unit(sc->sc_dev));
 334         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 335         ifp->if_init = upgt_init;
 336         ifp->if_ioctl = upgt_ioctl;
 337         ifp->if_start = upgt_start;
 338         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 339         IFQ_SET_READY(&ifp->if_snd);
 340
 341         ic = ifp->if_l2com;
 342         ic->ic_ifp = ifp;
 343         ic->ic_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
 344         ic->ic_opmode = IEEE80211_M_STA;
 345         /* set device capabilities */
 346         ic->ic_caps =
 347                   IEEE80211_C_STA               /* station mode */
 348                 | IEEE80211_C_MONITOR           /* monitor mode */
 349                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 350                 | IEEE80211_C_SHSLOT            /* short slot time supported */
 351                 | IEEE80211_C_BGSCAN            /* capable of bg scanning */
 352                 | IEEE80211_C_WPA               /* 802.11i */
 353                 ;
 354
 355         bands = 0;
 356         setbit(&bands, IEEE80211_MODE_11B);
 357         setbit(&bands, IEEE80211_MODE_11G);
 358         ieee80211_init_channels(ic, NULL, &bands);
 359
 360         ieee80211_ifattach(ic, sc->sc_myaddr);
 361         ic->ic_raw_xmit = upgt_raw_xmit;
 362         ic->ic_scan_start = upgt_scan_start;
 363         ic->ic_scan_end = upgt_scan_end;
 364         ic->ic_set_channel = upgt_set_channel;
 365
 366         ic->ic_vap_create = upgt_vap_create;
 367         ic->ic_vap_delete = upgt_vap_delete;
 368         ic->ic_update_mcast = upgt_update_mcast;
 369
 370         ieee80211_radiotap_attach(ic,
 371             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 372                 UPGT_TX_RADIOTAP_PRESENT,
 373             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 374                 UPGT_RX_RADIOTAP_PRESENT);
 375
 376         upgt_sysctl_node(sc);
 377
 378         if (bootverbose)
 379                 ieee80211_announce(ic);
 380
 381         return (0);
 382
 383 fail5:  if_free(ifp);
 384 fail4:  upgt_free_rx(sc);
 385 fail3:  upgt_free_tx(sc);
 386 fail2:  usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
 387 fail1:  mtx_destroy(&sc->sc_mtx);
 388
 389         return (error);
 390 }
 391
 392 static void
 393 upgt_txeof(struct usb_xfer *xfer, struct upgt_data *data)
 394 {
 395         struct upgt_softc *sc = usbd_xfer_softc(xfer);
 396         struct ifnet *ifp = sc->sc_ifp;
 397         struct mbuf *m;
 398
 399         UPGT_ASSERT_LOCKED(sc);
 400
 401         /*
 402          * Do any tx complete callback.  Note this must be done before releasing
 403          * the node reference.
 404          */
 405         if (data->m) {
 406                 m = data->m;
 407                 if (m->m_flags & M_TXCB) {
 408                         /* XXX status? */
 409                         ieee80211_process_callback(data->ni, m, 0);
 410                 }
 411                 m_freem(m);
 412                 data->m = NULL;
 413         }
 414         if (data->ni) {
 415                 ieee80211_free_node(data->ni);
 416                 data->ni = NULL;
 417         }
 418         ifp->if_opackets++;
 419 }
 420
 421 static void
 422 upgt_get_stats(struct upgt_softc *sc)
 423 {
 424         struct upgt_data *data_cmd;
 425         struct upgt_lmac_mem *mem;
 426         struct upgt_lmac_stats *stats;
 427
 428         data_cmd = upgt_getbuf(sc);
 429         if (data_cmd == NULL) {
 430                 device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
 431                 return;
 432         }
 433
 434         /*
 435          * Transmit the URB containing the CMD data.
 436          */
 437         memset(data_cmd->buf, 0, MCLBYTES);
 438
 439         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 440         mem->addr = htole32(sc->sc_memaddr_frame_start +
 441             UPGT_MEMSIZE_FRAME_HEAD);
 442
 443         stats = (struct upgt_lmac_stats *)(mem + 1);
 444
 445         stats->header1.flags = 0;
 446         stats->header1.type = UPGT_H1_TYPE_CTRL;
 447         stats->header1.len = htole16(
 448             sizeof(struct upgt_lmac_stats) - sizeof(struct upgt_lmac_header));
 449
 450         stats->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 451         stats->header2.type = htole16(UPGT_H2_TYPE_STATS);
 452         stats->header2.flags = 0;
 453
 454         data_cmd->buflen = sizeof(*mem) + sizeof(*stats);
 455
 456         mem->chksum = upgt_chksum_le((uint32_t *)stats,
 457             data_cmd->buflen - sizeof(*mem));
 458
 459         upgt_bulk_tx(sc, data_cmd);
 460 }
 461
 462 static int
 463 upgt_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 464 {
 465         struct upgt_softc *sc = ifp->if_softc;
 466         struct ieee80211com *ic = ifp->if_l2com;
 467         struct ifreq *ifr = (struct ifreq *) data;
 468         int error;
 469         int startall = 0;
 470
 471         UPGT_LOCK(sc);
 472         error = (sc->sc_flags & UPGT_FLAG_DETACHED) ? ENXIO : 0;
 473         UPGT_UNLOCK(sc);
 474         if (error)
 475                 return (error);
 476
 477         switch (cmd) {
 478         case SIOCSIFFLAGS:
 479                 if (ifp->if_flags & IFF_UP) {
 480                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 481                                 if ((ifp->if_flags ^ sc->sc_if_flags) &
 482                                     (IFF_ALLMULTI | IFF_PROMISC))
 483                                         upgt_set_multi(sc);
 484                         } else {
 485                                 upgt_init(sc);
 486                                 startall = 1;
 487                         }
 488                 } else {
 489                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 490                                 upgt_stop(sc);
 491                 }
 492                 sc->sc_if_flags = ifp->if_flags;
 493                 if (startall)
 494                         ieee80211_start_all(ic);
 495                 break;
 496         case SIOCGIFMEDIA:
 497                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
 498                 break;
 499         case SIOCGIFADDR:
 500                 error = ether_ioctl(ifp, cmd, data);
 501                 break;
 502         default:
 503                 error = EINVAL;
 504                 break;
 505         }
 506         return error;
 507 }
 508
 509 static void
 510 upgt_stop_locked(struct upgt_softc *sc)
 511 {
 512         struct ifnet *ifp = sc->sc_ifp;
 513
 514         UPGT_ASSERT_LOCKED(sc);
 515
 516         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 517                 upgt_set_macfilter(sc, IEEE80211_S_INIT);
 518         upgt_abort_xfers_locked(sc);
 519 }
 520
 521 static void
 522 upgt_stop(struct upgt_softc *sc)
 523 {
 524         struct ifnet *ifp = sc->sc_ifp;
 525
 526         UPGT_LOCK(sc);
 527         upgt_stop_locked(sc);
 528         UPGT_UNLOCK(sc);
 529
 530         /* device down */
 531         sc->sc_tx_timer = 0;
 532         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
 533         sc->sc_flags &= ~UPGT_FLAG_INITDONE;
 534 }
 535
 536 static void
 537 upgt_set_led(struct upgt_softc *sc, int action)
 538 {
 539         struct upgt_data *data_cmd;
 540         struct upgt_lmac_mem *mem;
 541         struct upgt_lmac_led *led;
 542
 543         data_cmd = upgt_getbuf(sc);
 544         if (data_cmd == NULL) {
 545                 device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
 546                 return;
 547         }
 548
 549         /*
 550          * Transmit the URB containing the CMD data.
 551          */
 552         memset(data_cmd->buf, 0, MCLBYTES);
 553
 554         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 555         mem->addr = htole32(sc->sc_memaddr_frame_start +
 556             UPGT_MEMSIZE_FRAME_HEAD);
 557
 558         led = (struct upgt_lmac_led *)(mem + 1);
 559
 560         led->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 561         led->header1.type = UPGT_H1_TYPE_CTRL;
 562         led->header1.len = htole16(
 563             sizeof(struct upgt_lmac_led) -
 564             sizeof(struct upgt_lmac_header));
 565
 566         led->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 567         led->header2.type = htole16(UPGT_H2_TYPE_LED);
 568         led->header2.flags = 0;
 569
 570         switch (action) {
 571         case UPGT_LED_OFF:
 572                 led->mode = htole16(UPGT_LED_MODE_SET);
 573                 led->action_fix = 0;
 574                 led->action_tmp = htole16(UPGT_LED_ACTION_OFF);
 575                 led->action_tmp_dur = 0;
 576                 break;
 577         case UPGT_LED_ON:
 578                 led->mode = htole16(UPGT_LED_MODE_SET);
 579                 led->action_fix = 0;
 580                 led->action_tmp = htole16(UPGT_LED_ACTION_ON);
 581                 led->action_tmp_dur = 0;
 582                 break;
 583         case UPGT_LED_BLINK:
 584                 if (sc->sc_state != IEEE80211_S_RUN) {
 585                         STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 586                         return;
 587                 }
 588                 if (sc->sc_led_blink) {
 589                         /* previous blink was not finished */
 590                         STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 591                         return;
 592                 }
 593                 led->mode = htole16(UPGT_LED_MODE_SET);
 594                 led->action_fix = htole16(UPGT_LED_ACTION_OFF);
 595                 led->action_tmp = htole16(UPGT_LED_ACTION_ON);
 596                 led->action_tmp_dur = htole16(UPGT_LED_ACTION_TMP_DUR);
 597                 /* lock blink */
 598                 sc->sc_led_blink = 1;
 599                 callout_reset(&sc->sc_led_ch, hz, upgt_set_led_blink, sc);
 600                 break;
 601         default:
 602                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 603                 return;
 604         }
 605
 606         data_cmd->buflen = sizeof(*mem) + sizeof(*led);
 607
 608         mem->chksum = upgt_chksum_le((uint32_t *)led,
 609             data_cmd->buflen - sizeof(*mem));
 610
 611         upgt_bulk_tx(sc, data_cmd);
 612 }
 613
 614 static void
 615 upgt_set_led_blink(void *arg)
 616 {
 617         struct upgt_softc *sc = arg;
 618
 619         /* blink finished, we are ready for a next one */
 620         sc->sc_led_blink = 0;
 621 }
 622
 623 static void
 624 upgt_init(void *priv)
 625 {
 626         struct upgt_softc *sc = priv;
 627         struct ifnet *ifp = sc->sc_ifp;
 628         struct ieee80211com *ic = ifp->if_l2com;
 629
 630         UPGT_LOCK(sc);
 631         upgt_init_locked(sc);
 632         UPGT_UNLOCK(sc);
 633
 634         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 635                 ieee80211_start_all(ic);                /* start all vap's */
 636 }
 637
 638 static void
 639 upgt_init_locked(struct upgt_softc *sc)
 640 {
 641         struct ifnet *ifp = sc->sc_ifp;
 642
 643         UPGT_ASSERT_LOCKED(sc);
 644
 645         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 646                 upgt_stop_locked(sc);
 647
 648         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_RX]);
 649
 650         (void)upgt_set_macfilter(sc, IEEE80211_S_SCAN);
 651
 652         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 653         ifp->if_drv_flags |= IFF_DRV_RUNNING;
 654         sc->sc_flags |= UPGT_FLAG_INITDONE;
 655
 656         callout_reset(&sc->sc_watchdog_ch, hz, upgt_watchdog, sc);
 657 }
 658
 659 static int
 660 upgt_set_macfilter(struct upgt_softc *sc, uint8_t state)
 661 {
 662         struct ifnet *ifp = sc->sc_ifp;
 663         struct ieee80211com *ic = ifp->if_l2com;
 664         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
 665         struct ieee80211_node *ni;
 666         struct upgt_data *data_cmd;
 667         struct upgt_lmac_mem *mem;
 668         struct upgt_lmac_filter *filter;
 669         uint8_t broadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 670
 671         UPGT_ASSERT_LOCKED(sc);
 672
 673         data_cmd = upgt_getbuf(sc);
 674         if (data_cmd == NULL) {
 675                 device_printf(sc->sc_dev, "out of TX buffers.\n");
 676                 return (ENOBUFS);
 677         }
 678
 679         /*
 680          * Transmit the URB containing the CMD data.
 681          */
 682         memset(data_cmd->buf, 0, MCLBYTES);
 683
 684         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 685         mem->addr = htole32(sc->sc_memaddr_frame_start +
 686             UPGT_MEMSIZE_FRAME_HEAD);
 687
 688         filter = (struct upgt_lmac_filter *)(mem + 1);
 689
 690         filter->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 691         filter->header1.type = UPGT_H1_TYPE_CTRL;
 692         filter->header1.len = htole16(
 693             sizeof(struct upgt_lmac_filter) -
 694             sizeof(struct upgt_lmac_header));
 695
 696         filter->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 697         filter->header2.type = htole16(UPGT_H2_TYPE_MACFILTER);
 698         filter->header2.flags = 0;
 699
 700         switch (state) {
 701         case IEEE80211_S_INIT:
 702                 DPRINTF(sc, UPGT_DEBUG_STATE, "%s: set MAC filter to INIT\n",
 703                     __func__);
 704                 filter->type = htole16(UPGT_FILTER_TYPE_RESET);
 705                 break;
 706         case IEEE80211_S_SCAN:
 707                 DPRINTF(sc, UPGT_DEBUG_STATE,
 708                     "set MAC filter to SCAN (bssid %s)\n",
 709                     ether_sprintf(broadcast));
 710                 filter->type = htole16(UPGT_FILTER_TYPE_NONE);
 711                 IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 712                 IEEE80211_ADDR_COPY(filter->src, broadcast);
 713                 filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1);
 714                 filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 715                 filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2);
 716                 filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 717                 filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3);
 718                 break;
 719         case IEEE80211_S_RUN:
 720                 ni = ieee80211_ref_node(vap->iv_bss);
 721                 /* XXX monitor mode isn't tested yet.  */
 722                 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
 723                         filter->type = htole16(UPGT_FILTER_TYPE_MONITOR);
 724                         IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 725                         IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid);
 726                         filter->unknown1 = htole16(UPGT_FILTER_MONITOR_UNKNOWN1);
 727                         filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 728                         filter->unknown2 = htole16(UPGT_FILTER_MONITOR_UNKNOWN2);
 729                         filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 730                         filter->unknown3 = htole16(UPGT_FILTER_MONITOR_UNKNOWN3);
 731                 } else {
 732                         DPRINTF(sc, UPGT_DEBUG_STATE,
 733                             "set MAC filter to RUN (bssid %s)\n",
 734                             ether_sprintf(ni->ni_bssid));
 735                         filter->type = htole16(UPGT_FILTER_TYPE_STA);
 736                         IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 737                         IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid);
 738                         filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1);
 739                         filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 740                         filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2);
 741                         filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 742                         filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3);
 743                 }
 744                 ieee80211_free_node(ni);
 745                 break;
 746         default:
 747                 device_printf(sc->sc_dev,
 748                     "MAC filter does not know that state\n");
 749                 break;
 750         }
 751
 752         data_cmd->buflen = sizeof(*mem) + sizeof(*filter);
 753
 754         mem->chksum = upgt_chksum_le((uint32_t *)filter,
 755             data_cmd->buflen - sizeof(*mem));
 756
 757         upgt_bulk_tx(sc, data_cmd);
 758
 759         return (0);
 760 }
 761
 762 static void
 763 upgt_setup_rates(struct ieee80211vap *vap, struct ieee80211com *ic)
 764 {
 765         struct ifnet *ifp = ic->ic_ifp;
 766         struct upgt_softc *sc = ifp->if_softc;
 767         const struct ieee80211_txparam *tp;
 768
 769         /*
 770          * 0x01 = OFMD6   0x10 = DS1
 771          * 0x04 = OFDM9   0x11 = DS2
 772          * 0x06 = OFDM12  0x12 = DS5
 773          * 0x07 = OFDM18  0x13 = DS11
 774          * 0x08 = OFDM24
 775          * 0x09 = OFDM36
 776          * 0x0a = OFDM48
 777          * 0x0b = OFDM54
 778          */
 779         const uint8_t rateset_auto_11b[] =
 780             { 0x13, 0x13, 0x12, 0x11, 0x11, 0x10, 0x10, 0x10 };
 781         const uint8_t rateset_auto_11g[] =
 782             { 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x04, 0x01 };
 783         const uint8_t rateset_fix_11bg[] =
 784             { 0x10, 0x11, 0x12, 0x13, 0x01, 0x04, 0x06, 0x07,
 785               0x08, 0x09, 0x0a, 0x0b };
 786
 787         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
 788
 789         /* XXX */
 790         if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) {
 791                 /*
 792                  * Automatic rate control is done by the device.
 793                  * We just pass the rateset from which the device
 794                  * will pickup a rate.
 795                  */
 796                 if (ic->ic_curmode == IEEE80211_MODE_11B)
 797                         memcpy(sc->sc_cur_rateset, rateset_auto_11b,
 798                             sizeof(sc->sc_cur_rateset));
 799                 if (ic->ic_curmode == IEEE80211_MODE_11G ||
 800                     ic->ic_curmode == IEEE80211_MODE_AUTO)
 801                         memcpy(sc->sc_cur_rateset, rateset_auto_11g,
 802                             sizeof(sc->sc_cur_rateset));
 803         } else {
 804                 /* set a fixed rate */
 805                 memset(sc->sc_cur_rateset, rateset_fix_11bg[tp->ucastrate],
 806                     sizeof(sc->sc_cur_rateset));
 807         }
 808 }
 809
 810 static void
 811 upgt_set_multi(void *arg)
 812 {
 813         struct upgt_softc *sc = arg;
 814         struct ifnet *ifp = sc->sc_ifp;
 815
 816         if (!(ifp->if_flags & IFF_UP))
 817                 return;
 818
 819         /*
 820          * XXX don't know how to set a device.  Lack of docs.  Just try to set
 821          * IFF_ALLMULTI flag here.
 822          */
 823         ifp->if_flags |= IFF_ALLMULTI;
 824 }
 825
 826 static void
 827 upgt_start(struct ifnet *ifp)
 828 {
 829         struct upgt_softc *sc = ifp->if_softc;
 830         struct upgt_data *data_tx;
 831         struct ieee80211_node *ni;
 832         struct mbuf *m;
 833
 834         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
 835                 return;
 836
 837         UPGT_LOCK(sc);
 838         for (;;) {
 839                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
 840                 if (m == NULL)
 841                         break;
 842
 843                 data_tx = upgt_gettxbuf(sc);
 844                 if (data_tx == NULL) {
 845                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
 846                         break;
 847                 }
 848
 849                 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
 850                 m->m_pkthdr.rcvif = NULL;
 851
 852                 if (upgt_tx_start(sc, m, ni, data_tx) != 0) {
 853                         STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, data_tx, next);
 854                         UPGT_STAT_INC(sc, st_tx_inactive);
 855                         ieee80211_free_node(ni);
 856                         ifp->if_oerrors++;
 857                         continue;
 858                 }
 859                 sc->sc_tx_timer = 5;
 860         }
 861         UPGT_UNLOCK(sc);
 862 }
 863
 864 static int
 865 upgt_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
 866         const struct ieee80211_bpf_params *params)
 867 {
 868         struct ieee80211com *ic = ni->ni_ic;
 869         struct ifnet *ifp = ic->ic_ifp;
 870         struct upgt_softc *sc = ifp->if_softc;
 871         struct upgt_data *data_tx = NULL;
 872
 873         /* prevent management frames from being sent if we're not ready */
 874         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 875                 m_freem(m);
 876                 ieee80211_free_node(ni);
 877                 return ENETDOWN;
 878         }
 879
 880         UPGT_LOCK(sc);
 881         data_tx = upgt_gettxbuf(sc);
 882         if (data_tx == NULL) {
 883                 ieee80211_free_node(ni);
 884                 m_freem(m);
 885                 UPGT_UNLOCK(sc);
 886                 return (ENOBUFS);
 887         }
 888
 889         if (upgt_tx_start(sc, m, ni, data_tx) != 0) {
 890                 STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, data_tx, next);
 891                 UPGT_STAT_INC(sc, st_tx_inactive);
 892                 ieee80211_free_node(ni);
 893                 ifp->if_oerrors++;
 894                 UPGT_UNLOCK(sc);
 895                 return (EIO);
 896         }
 897         UPGT_UNLOCK(sc);
 898
 899         sc->sc_tx_timer = 5;
 900         return (0);
 901 }
 902
 903 static void
 904 upgt_watchdog(void *arg)
 905 {
 906         struct upgt_softc *sc = arg;
 907         struct ifnet *ifp = sc->sc_ifp;
 908
 909         if (sc->sc_tx_timer > 0) {
 910                 if (--sc->sc_tx_timer == 0) {
 911                         device_printf(sc->sc_dev, "watchdog timeout\n");
 912                         /* upgt_init(ifp); XXX needs a process context ? */
 913                         ifp->if_oerrors++;
 914                         return;
 915                 }
 916                 callout_reset(&sc->sc_watchdog_ch, hz, upgt_watchdog, sc);
 917         }
 918 }
 919
 920 static uint32_t
 921 upgt_mem_alloc(struct upgt_softc *sc)
 922 {
 923         int i;
 924
 925         for (i = 0; i < sc->sc_memory.pages; i++) {
 926                 if (sc->sc_memory.page[i].used == 0) {
 927                         sc->sc_memory.page[i].used = 1;
 928                         return (sc->sc_memory.page[i].addr);
 929                 }
 930         }
 931
 932         return (0);
 933 }
 934
 935 static void
 936 upgt_scan_start(struct ieee80211com *ic)
 937 {
 938         /* do nothing.  */
 939 }
 940
 941 static void
 942 upgt_scan_end(struct ieee80211com *ic)
 943 {
 944         /* do nothing.  */
 945 }
 946
 947 static void
 948 upgt_set_channel(struct ieee80211com *ic)
 949 {
 950         struct upgt_softc *sc = ic->ic_ifp->if_softc;
 951
 952         UPGT_LOCK(sc);
 953         upgt_set_chan(sc, ic->ic_curchan);
 954         UPGT_UNLOCK(sc);
 955 }
 956
 957 static void
 958 upgt_set_chan(struct upgt_softc *sc, struct ieee80211_channel *c)
 959 {
 960         struct ifnet *ifp = sc->sc_ifp;
 961         struct ieee80211com *ic = ifp->if_l2com;
 962         struct upgt_data *data_cmd;
 963         struct upgt_lmac_mem *mem;
 964         struct upgt_lmac_channel *chan;
 965         int channel;
 966
 967         UPGT_ASSERT_LOCKED(sc);
 968
 969         channel = ieee80211_chan2ieee(ic, c);
 970         if (channel == 0 || channel == IEEE80211_CHAN_ANY) {
 971                 /* XXX should NEVER happen */
 972                 device_printf(sc->sc_dev,
 973                     "%s: invalid channel %x\n", __func__, channel);
 974                 return;
 975         }
 976
 977         DPRINTF(sc, UPGT_DEBUG_STATE, "%s: channel %d\n", __func__, channel);
 978
 979         data_cmd = upgt_getbuf(sc);
 980         if (data_cmd == NULL) {
 981                 device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
 982                 return;
 983         }
 984         /*
 985          * Transmit the URB containing the CMD data.
 986          */
 987         memset(data_cmd->buf, 0, MCLBYTES);
 988
 989         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 990         mem->addr = htole32(sc->sc_memaddr_frame_start +
 991             UPGT_MEMSIZE_FRAME_HEAD);
 992
 993         chan = (struct upgt_lmac_channel *)(mem + 1);
 994
 995         chan->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 996         chan->header1.type = UPGT_H1_TYPE_CTRL;
 997         chan->header1.len = htole16(
 998             sizeof(struct upgt_lmac_channel) - sizeof(struct upgt_lmac_header));
 999
1000         chan->header2.reqid = htole32(sc->sc_memaddr_frame_start);
1001         chan->header2.type = htole16(UPGT_H2_TYPE_CHANNEL);
1002         chan->header2.flags = 0;
1003
1004         chan->unknown1 = htole16(UPGT_CHANNEL_UNKNOWN1);
1005         chan->unknown2 = htole16(UPGT_CHANNEL_UNKNOWN2);
1006         chan->freq6 = sc->sc_eeprom_freq6[channel];
1007         chan->settings = sc->sc_eeprom_freq6_settings;
1008         chan->unknown3 = UPGT_CHANNEL_UNKNOWN3;
1009
1010         memcpy(chan->freq3_1, &sc->sc_eeprom_freq3[channel].data,
1011             sizeof(chan->freq3_1));
1012         memcpy(chan->freq4, &sc->sc_eeprom_freq4[channel],
1013             sizeof(sc->sc_eeprom_freq4[channel]));
1014         memcpy(chan->freq3_2, &sc->sc_eeprom_freq3[channel].data,
1015             sizeof(chan->freq3_2));
1016
1017         data_cmd->buflen = sizeof(*mem) + sizeof(*chan);
1018
1019         mem->chksum = upgt_chksum_le((uint32_t *)chan,
1020             data_cmd->buflen - sizeof(*mem));
1021
1022         upgt_bulk_tx(sc, data_cmd);
1023 }
1024
1025 static struct ieee80211vap *
1026 upgt_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
1027     enum ieee80211_opmode opmode, int flags,
1028     const uint8_t bssid[IEEE80211_ADDR_LEN],
1029     const uint8_t mac[IEEE80211_ADDR_LEN])
1030 {
1031         struct upgt_vap *uvp;
1032         struct ieee80211vap *vap;
1033
1034         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
1035                 return NULL;
1036         uvp = (struct upgt_vap *) malloc(sizeof(struct upgt_vap),
1037             M_80211_VAP, M_NOWAIT | M_ZERO);
1038         if (uvp == NULL)
1039                 return NULL;
1040         vap = &uvp->vap;
1041         /* enable s/w bmiss handling for sta mode */
1042
1043         if (ieee80211_vap_setup(ic, vap, name, unit, opmode,
1044             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac) != 0) {
1045                 /* out of memory */
1046                 free(uvp, M_80211_VAP);
1047                 return (NULL);
1048         }
1049
1050         /* override state transition machine */
1051         uvp->newstate = vap->iv_newstate;
1052         vap->iv_newstate = upgt_newstate;
1053
1054         /* setup device rates */
1055         upgt_setup_rates(vap, ic);
1056
1057         /* complete setup */
1058         ieee80211_vap_attach(vap, ieee80211_media_change,
1059             ieee80211_media_status);
1060         ic->ic_opmode = opmode;
1061         return vap;
1062 }
1063
1064 static int
1065 upgt_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1066 {
1067         struct upgt_vap *uvp = UPGT_VAP(vap);
1068         struct ieee80211com *ic = vap->iv_ic;
1069         struct upgt_softc *sc = ic->ic_ifp->if_softc;
1070
1071         /* do it in a process context */
1072         sc->sc_state = nstate;
1073
1074         IEEE80211_UNLOCK(ic);
1075         UPGT_LOCK(sc);
1076         callout_stop(&sc->sc_led_ch);
1077         callout_stop(&sc->sc_watchdog_ch);
1078
1079         switch (nstate) {
1080         case IEEE80211_S_INIT:
1081                 /* do not accept any frames if the device is down */
1082                 (void)upgt_set_macfilter(sc, sc->sc_state);
1083                 upgt_set_led(sc, UPGT_LED_OFF);
1084                 break;
1085         case IEEE80211_S_SCAN:
1086                 upgt_set_chan(sc, ic->ic_curchan);
1087                 break;
1088         case IEEE80211_S_AUTH:
1089                 upgt_set_chan(sc, ic->ic_curchan);
1090                 break;
1091         case IEEE80211_S_ASSOC:
1092                 break;
1093         case IEEE80211_S_RUN:
1094                 upgt_set_macfilter(sc, sc->sc_state);
1095                 upgt_set_led(sc, UPGT_LED_ON);
1096                 break;
1097         default:
1098                 break;
1099         }
1100         UPGT_UNLOCK(sc);
1101         IEEE80211_LOCK(ic);
1102         return (uvp->newstate(vap, nstate, arg));
1103 }
1104
1105 static void
1106 upgt_vap_delete(struct ieee80211vap *vap)
1107 {
1108         struct upgt_vap *uvp = UPGT_VAP(vap);
1109
1110         ieee80211_vap_detach(vap);
1111         free(uvp, M_80211_VAP);
1112 }
1113
1114 static void
1115 upgt_update_mcast(struct ifnet *ifp)
1116 {
1117         struct upgt_softc *sc = ifp->if_softc;
1118
1119         upgt_set_multi(sc);
1120 }
1121
1122 static int
1123 upgt_eeprom_parse(struct upgt_softc *sc)
1124 {
1125         struct upgt_eeprom_header *eeprom_header;
1126         struct upgt_eeprom_option *eeprom_option;
1127         uint16_t option_len;
1128         uint16_t option_type;
1129         uint16_t preamble_len;
1130         int option_end = 0;
1131
1132         /* calculate eeprom options start offset */
1133         eeprom_header = (struct upgt_eeprom_header *)sc->sc_eeprom;
1134         preamble_len = le16toh(eeprom_header->preamble_len);
1135         eeprom_option = (struct upgt_eeprom_option *)(sc->sc_eeprom +
1136             (sizeof(struct upgt_eeprom_header) + preamble_len));
1137
1138         while (!option_end) {
1139
1140                 /* sanity check */
1141                 if (eeprom_option >= (struct upgt_eeprom_option *)
1142                     (sc->sc_eeprom + UPGT_EEPROM_SIZE)) {
1143                         return (EINVAL);
1144                 }
1145
1146                 /* the eeprom option length is stored in words */
1147                 option_len =
1148                     (le16toh(eeprom_option->len) - 1) * sizeof(uint16_t);
1149                 option_type =
1150                     le16toh(eeprom_option->type);
1151
1152                 /* sanity check */
1153                 if (option_len == 0 || option_len >= UPGT_EEPROM_SIZE)
1154                         return (EINVAL);
1155
1156                 switch (option_type) {
1157                 case UPGT_EEPROM_TYPE_NAME:
1158                         DPRINTF(sc, UPGT_DEBUG_FW,
1159                             "EEPROM name len=%d\n", option_len);
1160                         break;
1161                 case UPGT_EEPROM_TYPE_SERIAL:
1162                         DPRINTF(sc, UPGT_DEBUG_FW,
1163                             "EEPROM serial len=%d\n", option_len);
1164                         break;
1165                 case UPGT_EEPROM_TYPE_MAC:
1166                         DPRINTF(sc, UPGT_DEBUG_FW,
1167                             "EEPROM mac len=%d\n", option_len);
1168
1169                         IEEE80211_ADDR_COPY(sc->sc_myaddr, eeprom_option->data);
1170                         break;
1171                 case UPGT_EEPROM_TYPE_HWRX:
1172                         DPRINTF(sc, UPGT_DEBUG_FW,
1173                             "EEPROM hwrx len=%d\n", option_len);
1174
1175                         upgt_eeprom_parse_hwrx(sc, eeprom_option->data);
1176                         break;
1177                 case UPGT_EEPROM_TYPE_CHIP:
1178                         DPRINTF(sc, UPGT_DEBUG_FW,
1179                             "EEPROM chip len=%d\n", option_len);
1180                         break;
1181                 case UPGT_EEPROM_TYPE_FREQ3:
1182                         DPRINTF(sc, UPGT_DEBUG_FW,
1183                             "EEPROM freq3 len=%d\n", option_len);
1184
1185                         upgt_eeprom_parse_freq3(sc, eeprom_option->data,
1186                             option_len);
1187                         break;
1188                 case UPGT_EEPROM_TYPE_FREQ4:
1189                         DPRINTF(sc, UPGT_DEBUG_FW,
1190                             "EEPROM freq4 len=%d\n", option_len);
1191
1192                         upgt_eeprom_parse_freq4(sc, eeprom_option->data,
1193                             option_len);
1194                         break;
1195                 case UPGT_EEPROM_TYPE_FREQ5:
1196                         DPRINTF(sc, UPGT_DEBUG_FW,
1197                             "EEPROM freq5 len=%d\n", option_len);
1198                         break;
1199                 case UPGT_EEPROM_TYPE_FREQ6:
1200                         DPRINTF(sc, UPGT_DEBUG_FW,
1201                             "EEPROM freq6 len=%d\n", option_len);
1202
1203                         upgt_eeprom_parse_freq6(sc, eeprom_option->data,
1204                             option_len);
1205                         break;
1206                 case UPGT_EEPROM_TYPE_END:
1207                         DPRINTF(sc, UPGT_DEBUG_FW,
1208                             "EEPROM end len=%d\n", option_len);
1209                         option_end = 1;
1210                         break;
1211                 case UPGT_EEPROM_TYPE_OFF:
1212                         DPRINTF(sc, UPGT_DEBUG_FW,
1213                             "%s: EEPROM off without end option\n", __func__);
1214                         return (EIO);
1215                 default:
1216                         DPRINTF(sc, UPGT_DEBUG_FW,
1217                             "EEPROM unknown type 0x%04x len=%d\n",
1218                             option_type, option_len);
1219                         break;
1220                 }
1221
1222                 /* jump to next EEPROM option */
1223                 eeprom_option = (struct upgt_eeprom_option *)
1224                     (eeprom_option->data + option_len);
1225         }
1226         return (0);
1227 }
1228
1229 static void
1230 upgt_eeprom_parse_freq3(struct upgt_softc *sc, uint8_t *data, int len)
1231 {
1232         struct upgt_eeprom_freq3_header *freq3_header;
1233         struct upgt_lmac_freq3 *freq3;
1234         int i;
1235         int elements;
1236         int flags;
1237         unsigned channel;
1238
1239         freq3_header = (struct upgt_eeprom_freq3_header *)data;
1240         freq3 = (struct upgt_lmac_freq3 *)(freq3_header + 1);
1241
1242         flags = freq3_header->flags;
1243         elements = freq3_header->elements;
1244
1245         DPRINTF(sc, UPGT_DEBUG_FW, "flags=0x%02x elements=%d\n",
1246             flags, elements);
1247
1248         if (elements >= (int)(UPGT_EEPROM_SIZE / sizeof(freq3[0])))
1249                 return;
1250
1251         for (i = 0; i < elements; i++) {
1252                 channel = ieee80211_mhz2ieee(le16toh(freq3[i].freq), 0);
1253                 if (channel >= IEEE80211_CHAN_MAX)
1254                         continue;
1255
1256                 sc->sc_eeprom_freq3[channel] = freq3[i];
1257
1258                 DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
1259                     le16toh(sc->sc_eeprom_freq3[channel].freq), channel);
1260         }
1261 }
1262
1263 void
1264 upgt_eeprom_parse_freq4(struct upgt_softc *sc, uint8_t *data, int len)
1265 {
1266         struct upgt_eeprom_freq4_header *freq4_header;
1267         struct upgt_eeprom_freq4_1 *freq4_1;
1268         struct upgt_eeprom_freq4_2 *freq4_2;
1269         int i;
1270         int j;
1271         int elements;
1272         int settings;
1273         int flags;
1274         unsigned channel;
1275
1276         freq4_header = (struct upgt_eeprom_freq4_header *)data;
1277         freq4_1 = (struct upgt_eeprom_freq4_1 *)(freq4_header + 1);
1278         flags = freq4_header->flags;
1279         elements = freq4_header->elements;
1280         settings = freq4_header->settings;
1281
1282         /* we need this value later */
1283         sc->sc_eeprom_freq6_settings = freq4_header->settings;
1284
1285         DPRINTF(sc, UPGT_DEBUG_FW, "flags=0x%02x elements=%d settings=%d\n",
1286             flags, elements, settings);
1287
1288         if (elements >= (int)(UPGT_EEPROM_SIZE / sizeof(freq4_1[0])))
1289                 return;
1290
1291         for (i = 0; i < elements; i++) {
1292                 channel = ieee80211_mhz2ieee(le16toh(freq4_1[i].freq), 0);
1293                 if (channel >= IEEE80211_CHAN_MAX)
1294                         continue;
1295
1296                 freq4_2 = (struct upgt_eeprom_freq4_2 *)freq4_1[i].data;
1297                 for (j = 0; j < settings; j++) {
1298                         sc->sc_eeprom_freq4[channel][j].cmd = freq4_2[j];
1299                         sc->sc_eeprom_freq4[channel][j].pad = 0;
1300                 }
1301
1302                 DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
1303                     le16toh(freq4_1[i].freq), channel);
1304         }
1305 }
1306
1307 void
1308 upgt_eeprom_parse_freq6(struct upgt_softc *sc, uint8_t *data, int len)
1309 {
1310         struct upgt_lmac_freq6 *freq6;
1311         int i;
1312         int elements;
1313         unsigned channel;
1314
1315         freq6 = (struct upgt_lmac_freq6 *)data;
1316         elements = len / sizeof(struct upgt_lmac_freq6);
1317
1318         DPRINTF(sc, UPGT_DEBUG_FW, "elements=%d\n", elements);
1319
1320         if (elements >= (int)(UPGT_EEPROM_SIZE / sizeof(freq6[0])))
1321                 return;
1322
1323         for (i = 0; i < elements; i++) {
1324                 channel = ieee80211_mhz2ieee(le16toh(freq6[i].freq), 0);
1325                 if (channel >= IEEE80211_CHAN_MAX)
1326                         continue;
1327
1328                 sc->sc_eeprom_freq6[channel] = freq6[i];
1329
1330                 DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
1331                     le16toh(sc->sc_eeprom_freq6[channel].freq), channel);
1332         }
1333 }
1334
1335 static void
1336 upgt_eeprom_parse_hwrx(struct upgt_softc *sc, uint8_t *data)
1337 {
1338         struct upgt_eeprom_option_hwrx *option_hwrx;
1339
1340         option_hwrx = (struct upgt_eeprom_option_hwrx *)data;
1341
1342         sc->sc_eeprom_hwrx = option_hwrx->rxfilter - UPGT_EEPROM_RX_CONST;
1343
1344         DPRINTF(sc, UPGT_DEBUG_FW, "hwrx option value=0x%04x\n",
1345             sc->sc_eeprom_hwrx);
1346 }
1347
1348 static int
1349 upgt_eeprom_read(struct upgt_softc *sc)
1350 {
1351         struct upgt_data *data_cmd;
1352         struct upgt_lmac_mem *mem;
1353         struct upgt_lmac_eeprom *eeprom;
1354         int block, error, offset;
1355
1356         UPGT_LOCK(sc);
1357         usb_pause_mtx(&sc->sc_mtx, 100);
1358
1359         offset = 0;
1360         block = UPGT_EEPROM_BLOCK_SIZE;
1361         while (offset < UPGT_EEPROM_SIZE) {
1362                 DPRINTF(sc, UPGT_DEBUG_FW,
1363                     "request EEPROM block (offset=%d, len=%d)\n", offset, block);
1364
1365                 data_cmd = upgt_getbuf(sc);
1366                 if (data_cmd == NULL) {
1367                         UPGT_UNLOCK(sc);
1368                         return (ENOBUFS);
1369                 }
1370
1371                 /*
1372                  * Transmit the URB containing the CMD data.
1373                  */
1374                 memset(data_cmd->buf, 0, MCLBYTES);
1375
1376                 mem = (struct upgt_lmac_mem *)data_cmd->buf;
1377                 mem->addr = htole32(sc->sc_memaddr_frame_start +
1378                     UPGT_MEMSIZE_FRAME_HEAD);
1379
1380                 eeprom = (struct upgt_lmac_eeprom *)(mem + 1);
1381                 eeprom->header1.flags = 0;
1382                 eeprom->header1.type = UPGT_H1_TYPE_CTRL;
1383                 eeprom->header1.len = htole16((
1384                     sizeof(struct upgt_lmac_eeprom) -
1385                     sizeof(struct upgt_lmac_header)) + block);
1386
1387                 eeprom->header2.reqid = htole32(sc->sc_memaddr_frame_start);
1388                 eeprom->header2.type = htole16(UPGT_H2_TYPE_EEPROM);
1389                 eeprom->header2.flags = 0;
1390
1391                 eeprom->offset = htole16(offset);
1392                 eeprom->len = htole16(block);
1393
1394                 data_cmd->buflen = sizeof(*mem) + sizeof(*eeprom) + block;
1395
1396                 mem->chksum = upgt_chksum_le((uint32_t *)eeprom,
1397                     data_cmd->buflen - sizeof(*mem));
1398                 upgt_bulk_tx(sc, data_cmd);
1399
1400                 error = mtx_sleep(sc, &sc->sc_mtx, 0, "eeprom_request", hz);
1401                 if (error != 0) {
1402                         device_printf(sc->sc_dev,
1403                             "timeout while waiting for EEPROM data\n");
1404                         UPGT_UNLOCK(sc);
1405                         return (EIO);
1406                 }
1407
1408                 offset += block;
1409                 if (UPGT_EEPROM_SIZE - offset < block)
1410                         block = UPGT_EEPROM_SIZE - offset;
1411         }
1412
1413         UPGT_UNLOCK(sc);
1414         return (0);
1415 }
1416
1417 /*
1418  * When a rx data came in the function returns a mbuf and a rssi values.
1419  */
1420 static struct mbuf *
1421 upgt_rxeof(struct usb_xfer *xfer, struct upgt_data *data, int *rssi)
1422 {
1423         struct mbuf *m = NULL;
1424         struct upgt_softc *sc = usbd_xfer_softc(xfer);
1425         struct upgt_lmac_header *header;
1426         struct upgt_lmac_eeprom *eeprom;
1427         uint8_t h1_type;
1428         uint16_t h2_type;
1429         int actlen, sumlen;
1430
1431         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
1432
1433         UPGT_ASSERT_LOCKED(sc);
1434
1435         if (actlen < 1)
1436                 return (NULL);
1437
1438         /* Check only at the very beginning.  */
1439         if (!(sc->sc_flags & UPGT_FLAG_FWLOADED) &&
1440             (memcmp(data->buf, "OK", 2) == 0)) {
1441                 sc->sc_flags |= UPGT_FLAG_FWLOADED;
1442                 wakeup_one(sc);
1443                 return (NULL);
1444         }
1445
1446         if (actlen < (int)UPGT_RX_MINSZ)
1447                 return (NULL);
1448
1449         /*
1450          * Check what type of frame came in.
1451          */
1452         header = (struct upgt_lmac_header *)(data->buf + 4);
1453
1454         h1_type = header->header1.type;
1455         h2_type = le16toh(header->header2.type);
1456
1457         if (h1_type == UPGT_H1_TYPE_CTRL && h2_type == UPGT_H2_TYPE_EEPROM) {
1458                 eeprom = (struct upgt_lmac_eeprom *)(data->buf + 4);
1459                 uint16_t eeprom_offset = le16toh(eeprom->offset);
1460                 uint16_t eeprom_len = le16toh(eeprom->len);
1461
1462                 DPRINTF(sc, UPGT_DEBUG_FW,
1463                     "received EEPROM block (offset=%d, len=%d)\n",
1464                     eeprom_offset, eeprom_len);
1465
1466                 memcpy(sc->sc_eeprom + eeprom_offset,
1467                     data->buf + sizeof(struct upgt_lmac_eeprom) + 4,
1468                     eeprom_len);
1469
1470                 /* EEPROM data has arrived in time, wakeup.  */
1471                 wakeup(sc);
1472         } else if (h1_type == UPGT_H1_TYPE_CTRL &&
1473             h2_type == UPGT_H2_TYPE_TX_DONE) {
1474                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: received 802.11 TX done\n",
1475                     __func__);
1476                 upgt_tx_done(sc, data->buf + 4);
1477         } else if (h1_type == UPGT_H1_TYPE_RX_DATA ||
1478             h1_type == UPGT_H1_TYPE_RX_DATA_MGMT) {
1479                 DPRINTF(sc, UPGT_DEBUG_RECV, "%s: received 802.11 RX data\n",
1480                     __func__);
1481                 m = upgt_rx(sc, data->buf + 4, le16toh(header->header1.len),
1482                     rssi);
1483         } else if (h1_type == UPGT_H1_TYPE_CTRL &&
1484             h2_type == UPGT_H2_TYPE_STATS) {
1485                 DPRINTF(sc, UPGT_DEBUG_STAT, "%s: received statistic data\n",
1486                     __func__);
1487                 /* TODO: what could we do with the statistic data? */
1488         } else {
1489                 /* ignore unknown frame types */
1490                 DPRINTF(sc, UPGT_DEBUG_INTR,
1491                     "received unknown frame type 0x%02x\n",
1492                     header->header1.type);
1493         }
1494         return (m);
1495 }
1496
1497 /*
1498  * The firmware awaits a checksum for each frame we send to it.
1499  * The algorithm used therefor is uncommon but somehow similar to CRC32.
1500  */
1501 static uint32_t
1502 upgt_chksum_le(const uint32_t *buf, size_t size)
1503 {
1504         size_t i;
1505         uint32_t crc = 0;
1506
1507         for (i = 0; i < size; i += sizeof(uint32_t)) {
1508                 crc = htole32(crc ^ *buf++);
1509                 crc = htole32((crc >> 5) ^ (crc << 3));
1510         }
1511
1512         return (crc);
1513 }
1514
1515 static struct mbuf *
1516 upgt_rx(struct upgt_softc *sc, uint8_t *data, int pkglen, int *rssi)
1517 {
1518         struct ifnet *ifp = sc->sc_ifp;
1519         struct ieee80211com *ic = ifp->if_l2com;
1520         struct upgt_lmac_rx_desc *rxdesc;
1521         struct mbuf *m;
1522
1523         /*
1524          * don't pass packets to the ieee80211 framework if the driver isn't
1525          * RUNNING.
1526          */
1527         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
1528                 return (NULL);
1529
1530         /* access RX packet descriptor */
1531         rxdesc = (struct upgt_lmac_rx_desc *)data;
1532
1533         /* create mbuf which is suitable for strict alignment archs */
1534         KASSERT((pkglen + ETHER_ALIGN) < MCLBYTES,
1535             ("A current mbuf storage is small (%d)", pkglen + ETHER_ALIGN));
1536         m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1537         if (m == NULL) {
1538                 device_printf(sc->sc_dev, "could not create RX mbuf\n");
1539                 return (NULL);
1540         }
1541         m_adj(m, ETHER_ALIGN);
1542         memcpy(mtod(m, char *), rxdesc->data, pkglen);
1543         /* trim FCS */
1544         m->m_len = m->m_pkthdr.len = pkglen - IEEE80211_CRC_LEN;
1545         m->m_pkthdr.rcvif = ifp;
1546
1547         if (ieee80211_radiotap_active(ic)) {
1548                 struct upgt_rx_radiotap_header *tap = &sc->sc_rxtap;
1549
1550                 tap->wr_flags = 0;
1551                 tap->wr_rate = upgt_rx_rate(sc, rxdesc->rate);
1552                 tap->wr_antsignal = rxdesc->rssi;
1553         }
1554         ifp->if_ipackets++;
1555
1556         DPRINTF(sc, UPGT_DEBUG_RX_PROC, "%s: RX done\n", __func__);
1557         *rssi = rxdesc->rssi;
1558         return (m);
1559 }
1560
1561 static uint8_t
1562 upgt_rx_rate(struct upgt_softc *sc, const int rate)
1563 {
1564         struct ifnet *ifp = sc->sc_ifp;
1565         struct ieee80211com *ic = ifp->if_l2com;
1566         static const uint8_t cck_upgt2rate[4] = { 2, 4, 11, 22 };
1567         static const uint8_t ofdm_upgt2rate[12] =
1568             { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 };
1569
1570         if (ic->ic_curmode == IEEE80211_MODE_11B &&
1571             !(rate < 0 || rate > 3))
1572                 return cck_upgt2rate[rate & 0xf];
1573
1574         if (ic->ic_curmode == IEEE80211_MODE_11G &&
1575             !(rate < 0 || rate > 11))
1576                 return ofdm_upgt2rate[rate & 0xf];
1577
1578         return (0);
1579 }
1580
1581 static void
1582 upgt_tx_done(struct upgt_softc *sc, uint8_t *data)
1583 {
1584         struct ifnet *ifp = sc->sc_ifp;
1585         struct upgt_lmac_tx_done_desc *desc;
1586         int i, freed = 0;
1587
1588         UPGT_ASSERT_LOCKED(sc);
1589
1590         desc = (struct upgt_lmac_tx_done_desc *)data;
1591
1592         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
1593                 struct upgt_data *data_tx = &sc->sc_tx_data[i];
1594
1595                 if (data_tx->addr == le32toh(desc->header2.reqid)) {
1596                         upgt_mem_free(sc, data_tx->addr);
1597                         data_tx->ni = NULL;
1598                         data_tx->addr = 0;
1599                         data_tx->m = NULL;
1600
1601                         DPRINTF(sc, UPGT_DEBUG_TX_PROC,
1602                             "TX done: memaddr=0x%08x, status=0x%04x, rssi=%d, ",
1603                             le32toh(desc->header2.reqid),
1604                             le16toh(desc->status), le16toh(desc->rssi));
1605                         DPRINTF(sc, UPGT_DEBUG_TX_PROC, "seq=%d\n",
1606                             le16toh(desc->seq));
1607
1608                         freed++;
1609                 }
1610         }
1611
1612         if (freed != 0) {
1613                 sc->sc_tx_timer = 0;
1614                 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1615                 UPGT_UNLOCK(sc);
1616                 upgt_start(ifp);
1617                 UPGT_LOCK(sc);
1618         }
1619 }
1620
1621 static void
1622 upgt_mem_free(struct upgt_softc *sc, uint32_t addr)
1623 {
1624         int i;
1625
1626         for (i = 0; i < sc->sc_memory.pages; i++) {
1627                 if (sc->sc_memory.page[i].addr == addr) {
1628                         sc->sc_memory.page[i].used = 0;
1629                         return;
1630                 }
1631         }
1632
1633         device_printf(sc->sc_dev,
1634             "could not free memory address 0x%08x\n", addr);
1635 }
1636
1637 static int
1638 upgt_fw_load(struct upgt_softc *sc)
1639 {
1640         const struct firmware *fw;
1641         struct upgt_data *data_cmd;
1642         struct upgt_fw_x2_header *x2;
1643         char start_fwload_cmd[] = { 0x3c, 0x0d };
1644         int error = 0;
1645         size_t offset;
1646         int bsize;
1647         int n;
1648         uint32_t crc32;
1649
1650         fw = firmware_get(upgt_fwname);
1651         if (fw == NULL) {
1652                 device_printf(sc->sc_dev, "could not read microcode %s\n",
1653                     upgt_fwname);
1654                 return (EIO);
1655         }
1656
1657         UPGT_LOCK(sc);
1658
1659         /* send firmware start load command */
1660         data_cmd = upgt_getbuf(sc);
1661         if (data_cmd == NULL) {
1662                 error = ENOBUFS;
1663                 goto fail;
1664         }
1665         data_cmd->buflen = sizeof(start_fwload_cmd);
1666         memcpy(data_cmd->buf, start_fwload_cmd, data_cmd->buflen);
1667         upgt_bulk_tx(sc, data_cmd);
1668
1669         /* send X2 header */
1670         data_cmd = upgt_getbuf(sc);
1671         if (data_cmd == NULL) {
1672                 error = ENOBUFS;
1673                 goto fail;
1674         }
1675         data_cmd->buflen = sizeof(struct upgt_fw_x2_header);
1676         x2 = (struct upgt_fw_x2_header *)data_cmd->buf;
1677         memcpy(x2->signature, UPGT_X2_SIGNATURE, UPGT_X2_SIGNATURE_SIZE);
1678         x2->startaddr = htole32(UPGT_MEMADDR_FIRMWARE_START);
1679         x2->len = htole32(fw->datasize);
1680         x2->crc = upgt_crc32_le((uint8_t *)data_cmd->buf +
1681             UPGT_X2_SIGNATURE_SIZE,
1682             sizeof(struct upgt_fw_x2_header) - UPGT_X2_SIGNATURE_SIZE -
1683             sizeof(uint32_t));
1684         upgt_bulk_tx(sc, data_cmd);
1685
1686         /* download firmware */
1687         for (offset = 0; offset < fw->datasize; offset += bsize) {
1688                 if (fw->datasize - offset > UPGT_FW_BLOCK_SIZE)
1689                         bsize = UPGT_FW_BLOCK_SIZE;
1690                 else
1691                         bsize = fw->datasize - offset;
1692
1693                 data_cmd = upgt_getbuf(sc);
1694                 if (data_cmd == NULL) {
1695                         error = ENOBUFS;
1696                         goto fail;
1697                 }
1698                 n = upgt_fw_copy((const uint8_t *)fw->data + offset,
1699                     data_cmd->buf, bsize);
1700                 data_cmd->buflen = bsize;
1701                 upgt_bulk_tx(sc, data_cmd);
1702
1703                 DPRINTF(sc, UPGT_DEBUG_FW, "FW offset=%d, read=%d, sent=%d\n",
1704                     offset, n, bsize);
1705                 bsize = n;
1706         }
1707         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware downloaded\n", __func__);
1708
1709         /* load firmware */
1710         data_cmd = upgt_getbuf(sc);
1711         if (data_cmd == NULL) {
1712                 error = ENOBUFS;
1713                 goto fail;
1714         }
1715         crc32 = upgt_crc32_le(fw->data, fw->datasize);
1716         *((uint32_t *)(data_cmd->buf)    ) = crc32;
1717         *((uint8_t  *)(data_cmd->buf) + 4) = 'g';
1718         *((uint8_t  *)(data_cmd->buf) + 5) = '\r';
1719         data_cmd->buflen = 6;
1720         upgt_bulk_tx(sc, data_cmd);
1721
1722         /* waiting 'OK' response.  */
1723         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_RX]);
1724         error = mtx_sleep(sc, &sc->sc_mtx, 0, "upgtfw", 2 * hz);
1725         if (error != 0) {
1726                 device_printf(sc->sc_dev, "firmware load failed\n");
1727                 error = EIO;
1728         }
1729
1730         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware loaded\n", __func__);
1731 fail:
1732         UPGT_UNLOCK(sc);
1733         firmware_put(fw, FIRMWARE_UNLOAD);
1734         return (error);
1735 }
1736
1737 static uint32_t
1738 upgt_crc32_le(const void *buf, size_t size)
1739 {
1740         uint32_t crc;
1741
1742         crc = ether_crc32_le(buf, size);
1743
1744         /* apply final XOR value as common for CRC-32 */
1745         crc = htole32(crc ^ 0xffffffffU);
1746
1747         return (crc);
1748 }
1749
1750 /*
1751  * While copying the version 2 firmware, we need to replace two characters:
1752  *
1753  * 0x7e -> 0x7d 0x5e
1754  * 0x7d -> 0x7d 0x5d
1755  */
1756 static int
1757 upgt_fw_copy(const uint8_t *src, char *dst, int size)
1758 {
1759         int i, j;
1760
1761         for (i = 0, j = 0; i < size && j < size; i++) {
1762                 switch (src[i]) {
1763                 case 0x7e:
1764                         dst[j] = 0x7d;
1765                         j++;
1766                         dst[j] = 0x5e;
1767                         j++;
1768                         break;
1769                 case 0x7d:
1770                         dst[j] = 0x7d;
1771                         j++;
1772                         dst[j] = 0x5d;
1773                         j++;
1774                         break;
1775                 default:
1776                         dst[j] = src[i];
1777                         j++;
1778                         break;
1779                 }
1780         }
1781
1782         return (i);
1783 }
1784
1785 static int
1786 upgt_mem_init(struct upgt_softc *sc)
1787 {
1788         int i;
1789
1790         for (i = 0; i < UPGT_MEMORY_MAX_PAGES; i++) {
1791                 sc->sc_memory.page[i].used = 0;
1792
1793                 if (i == 0) {
1794                         /*
1795                          * The first memory page is always reserved for
1796                          * command data.
1797                          */
1798                         sc->sc_memory.page[i].addr =
1799                             sc->sc_memaddr_frame_start + MCLBYTES;
1800                 } else {
1801                         sc->sc_memory.page[i].addr =
1802                             sc->sc_memory.page[i - 1].addr + MCLBYTES;
1803                 }
1804
1805                 if (sc->sc_memory.page[i].addr + MCLBYTES >=
1806                     sc->sc_memaddr_frame_end)
1807                         break;
1808
1809                 DPRINTF(sc, UPGT_DEBUG_FW, "memory address page %d=0x%08x\n",
1810                     i, sc->sc_memory.page[i].addr);
1811         }
1812
1813         sc->sc_memory.pages = i;
1814
1815         DPRINTF(sc, UPGT_DEBUG_FW, "memory pages=%d\n", sc->sc_memory.pages);
1816         return (0);
1817 }
1818
1819 static int
1820 upgt_fw_verify(struct upgt_softc *sc)
1821 {
1822         const struct firmware *fw;
1823         const struct upgt_fw_bra_option *bra_opt;
1824         const struct upgt_fw_bra_descr *descr;
1825         const uint8_t *p;
1826         const uint32_t *uc;
1827         uint32_t bra_option_type, bra_option_len;
1828         size_t offset;
1829         int bra_end = 0;
1830         int error = 0;
1831
1832         fw = firmware_get(upgt_fwname);
1833         if (fw == NULL) {
1834                 device_printf(sc->sc_dev, "could not read microcode %s\n",
1835                     upgt_fwname);
1836                 return EIO;
1837         }
1838
1839         /*
1840          * Seek to beginning of Boot Record Area (BRA).
1841          */
1842         for (offset = 0; offset < fw->datasize; offset += sizeof(*uc)) {
1843                 uc = (const uint32_t *)((const uint8_t *)fw->data + offset);
1844                 if (*uc == 0)
1845                         break;
1846         }
1847         for (; offset < fw->datasize; offset += sizeof(*uc)) {
1848                 uc = (const uint32_t *)((const uint8_t *)fw->data + offset);
1849                 if (*uc != 0)
1850                         break;
1851         }
1852         if (offset == fw->datasize) {
1853                 device_printf(sc->sc_dev,
1854                     "firmware Boot Record Area not found\n");
1855                 error = EIO;
1856                 goto fail;
1857         }
1858
1859         DPRINTF(sc, UPGT_DEBUG_FW,
1860             "firmware Boot Record Area found at offset %d\n", offset);
1861
1862         /*
1863          * Parse Boot Record Area (BRA) options.
1864          */
1865         while (offset < fw->datasize && bra_end == 0) {
1866                 /* get current BRA option */
1867                 p = (const uint8_t *)fw->data + offset;
1868                 bra_opt = (const struct upgt_fw_bra_option *)p;
1869                 bra_option_type = le32toh(bra_opt->type);
1870                 bra_option_len = le32toh(bra_opt->len) * sizeof(*uc);
1871
1872                 switch (bra_option_type) {
1873                 case UPGT_BRA_TYPE_FW:
1874                         DPRINTF(sc, UPGT_DEBUG_FW, "UPGT_BRA_TYPE_FW len=%d\n",
1875                             bra_option_len);
1876
1877                         if (bra_option_len != UPGT_BRA_FWTYPE_SIZE) {
1878                                 device_printf(sc->sc_dev,
1879                                     "wrong UPGT_BRA_TYPE_FW len\n");
1880                                 error = EIO;
1881                                 goto fail;
1882                         }
1883                         if (memcmp(UPGT_BRA_FWTYPE_LM86, bra_opt->data,
1884                             bra_option_len) == 0) {
1885                                 sc->sc_fw_type = UPGT_FWTYPE_LM86;
1886                                 break;
1887                         }
1888                         if (memcmp(UPGT_BRA_FWTYPE_LM87, bra_opt->data,
1889                             bra_option_len) == 0) {
1890                                 sc->sc_fw_type = UPGT_FWTYPE_LM87;
1891                                 break;
1892                         }
1893                         device_printf(sc->sc_dev,
1894                             "unsupported firmware type\n");
1895                         error = EIO;
1896                         goto fail;
1897                 case UPGT_BRA_TYPE_VERSION:
1898                         DPRINTF(sc, UPGT_DEBUG_FW,
1899                             "UPGT_BRA_TYPE_VERSION len=%d\n", bra_option_len);
1900                         break;
1901                 case UPGT_BRA_TYPE_DEPIF:
1902                         DPRINTF(sc, UPGT_DEBUG_FW,
1903                             "UPGT_BRA_TYPE_DEPIF len=%d\n", bra_option_len);
1904                         break;
1905                 case UPGT_BRA_TYPE_EXPIF:
1906                         DPRINTF(sc, UPGT_DEBUG_FW,
1907                             "UPGT_BRA_TYPE_EXPIF len=%d\n", bra_option_len);
1908                         break;
1909                 case UPGT_BRA_TYPE_DESCR:
1910                         DPRINTF(sc, UPGT_DEBUG_FW,
1911                             "UPGT_BRA_TYPE_DESCR len=%d\n", bra_option_len);
1912
1913                         descr = (const struct upgt_fw_bra_descr *)bra_opt->data;
1914
1915                         sc->sc_memaddr_frame_start =
1916                             le32toh(descr->memaddr_space_start);
1917                         sc->sc_memaddr_frame_end =
1918                             le32toh(descr->memaddr_space_end);
1919
1920                         DPRINTF(sc, UPGT_DEBUG_FW,
1921                             "memory address space start=0x%08x\n",
1922                             sc->sc_memaddr_frame_start);
1923                         DPRINTF(sc, UPGT_DEBUG_FW,
1924                             "memory address space end=0x%08x\n",
1925                             sc->sc_memaddr_frame_end);
1926                         break;
1927                 case UPGT_BRA_TYPE_END:
1928                         DPRINTF(sc, UPGT_DEBUG_FW, "UPGT_BRA_TYPE_END len=%d\n",
1929                             bra_option_len);
1930                         bra_end = 1;
1931                         break;
1932                 default:
1933                         DPRINTF(sc, UPGT_DEBUG_FW, "unknown BRA option len=%d\n",
1934                             bra_option_len);
1935                         error = EIO;
1936                         goto fail;
1937                 }
1938
1939                 /* jump to next BRA option */
1940                 offset += sizeof(struct upgt_fw_bra_option) + bra_option_len;
1941         }
1942
1943         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware verified", __func__);
1944 fail:
1945         firmware_put(fw, FIRMWARE_UNLOAD);
1946         return (error);
1947 }
1948
1949 static void
1950 upgt_bulk_tx(struct upgt_softc *sc, struct upgt_data *data)
1951 {
1952
1953         UPGT_ASSERT_LOCKED(sc);
1954
1955         STAILQ_INSERT_TAIL(&sc->sc_tx_pending, data, next);
1956         UPGT_STAT_INC(sc, st_tx_pending);
1957         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_TX]);
1958 }
1959
1960 static int
1961 upgt_device_reset(struct upgt_softc *sc)
1962 {
1963         struct upgt_data *data;
1964         char init_cmd[] = { 0x7e, 0x7e, 0x7e, 0x7e };
1965
1966         UPGT_LOCK(sc);
1967
1968         data = upgt_getbuf(sc);
1969         if (data == NULL) {
1970                 UPGT_UNLOCK(sc);
1971                 return (ENOBUFS);
1972         }
1973         memcpy(data->buf, init_cmd, sizeof(init_cmd));
1974         data->buflen = sizeof(init_cmd);
1975         upgt_bulk_tx(sc, data);
1976         usb_pause_mtx(&sc->sc_mtx, 100);
1977
1978         UPGT_UNLOCK(sc);
1979         DPRINTF(sc, UPGT_DEBUG_FW, "%s: device initialized\n", __func__);
1980         return (0);
1981 }
1982
1983 static int
1984 upgt_alloc_tx(struct upgt_softc *sc)
1985 {
1986         int i;
1987
1988         STAILQ_INIT(&sc->sc_tx_active);
1989         STAILQ_INIT(&sc->sc_tx_inactive);
1990         STAILQ_INIT(&sc->sc_tx_pending);
1991
1992         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
1993                 struct upgt_data *data = &sc->sc_tx_data[i];
1994                 data->buf = ((uint8_t *)sc->sc_tx_dma_buf) + (i * MCLBYTES);
1995                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
1996                 UPGT_STAT_INC(sc, st_tx_inactive);
1997         }
1998
1999         return (0);
2000 }
2001
2002 static int
2003 upgt_alloc_rx(struct upgt_softc *sc)
2004 {
2005         int i;
2006
2007         STAILQ_INIT(&sc->sc_rx_active);
2008         STAILQ_INIT(&sc->sc_rx_inactive);
2009
2010         for (i = 0; i < UPGT_RX_MAXCOUNT; i++) {
2011                 struct upgt_data *data = &sc->sc_rx_data[i];
2012                 data->buf = ((uint8_t *)sc->sc_rx_dma_buf) + (i * MCLBYTES);
2013                 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2014         }
2015         return (0);
2016 }
2017
2018 static int
2019 upgt_detach(device_t dev)
2020 {
2021         struct upgt_softc *sc = device_get_softc(dev);
2022         struct ifnet *ifp = sc->sc_ifp;
2023         struct ieee80211com *ic = ifp->if_l2com;
2024         unsigned int x;
2025
2026         /*
2027          * Prevent further allocations from RX/TX/CMD
2028          * data lists and ioctls
2029          */
2030         UPGT_LOCK(sc);
2031         sc->sc_flags |= UPGT_FLAG_DETACHED;
2032
2033         STAILQ_INIT(&sc->sc_tx_active);
2034         STAILQ_INIT(&sc->sc_tx_inactive);
2035         STAILQ_INIT(&sc->sc_tx_pending);
2036
2037         STAILQ_INIT(&sc->sc_rx_active);
2038         STAILQ_INIT(&sc->sc_rx_inactive);
2039         UPGT_UNLOCK(sc);
2040
2041         upgt_stop(sc);
2042
2043         callout_drain(&sc->sc_led_ch);
2044         callout_drain(&sc->sc_watchdog_ch);
2045
2046         /* drain USB transfers */
2047         for (x = 0; x != UPGT_N_XFERS; x++)
2048                 usbd_transfer_drain(sc->sc_xfer[x]);
2049
2050         /* free data buffers */
2051         UPGT_LOCK(sc);
2052         upgt_free_rx(sc);
2053         upgt_free_tx(sc);
2054         UPGT_UNLOCK(sc);
2055
2056         /* free USB transfers and some data buffers */
2057         usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
2058
2059         ieee80211_ifdetach(ic);
2060         if_free(ifp);
2061         mtx_destroy(&sc->sc_mtx);
2062
2063         return (0);
2064 }
2065
2066 static void
2067 upgt_free_rx(struct upgt_softc *sc)
2068 {
2069         int i;
2070
2071         for (i = 0; i < UPGT_RX_MAXCOUNT; i++) {
2072                 struct upgt_data *data = &sc->sc_rx_data[i];
2073
2074                 data->buf = NULL;
2075                 data->ni = NULL;
2076         }
2077 }
2078
2079 static void
2080 upgt_free_tx(struct upgt_softc *sc)
2081 {
2082         int i;
2083
2084         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
2085                 struct upgt_data *data = &sc->sc_tx_data[i];
2086
2087                 if (data->ni != NULL)
2088                         ieee80211_free_node(data->ni);
2089
2090                 data->buf = NULL;
2091                 data->ni = NULL;
2092         }
2093 }
2094
2095 static void
2096 upgt_abort_xfers_locked(struct upgt_softc *sc)
2097 {
2098         int i;
2099
2100         UPGT_ASSERT_LOCKED(sc);
2101         /* abort any pending transfers */
2102         for (i = 0; i < UPGT_N_XFERS; i++)
2103                 usbd_transfer_stop(sc->sc_xfer[i]);
2104 }
2105
2106 static void
2107 upgt_abort_xfers(struct upgt_softc *sc)
2108 {
2109
2110         UPGT_LOCK(sc);
2111         upgt_abort_xfers_locked(sc);
2112         UPGT_UNLOCK(sc);
2113 }
2114
2115 #define UPGT_SYSCTL_STAT_ADD32(c, h, n, p, d)   \
2116             SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
2117
2118 static void
2119 upgt_sysctl_node(struct upgt_softc *sc)
2120 {
2121         struct sysctl_ctx_list *ctx;
2122         struct sysctl_oid_list *child;
2123         struct sysctl_oid *tree;
2124         struct upgt_stat *stats;
2125
2126         stats = &sc->sc_stat;
2127         ctx = device_get_sysctl_ctx(sc->sc_dev);
2128         child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->sc_dev));
2129
2130         tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
2131             NULL, "UPGT statistics");
2132         child = SYSCTL_CHILDREN(tree);
2133         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_active",
2134             &stats->st_tx_active, "Active numbers in TX queue");
2135         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_inactive",
2136             &stats->st_tx_inactive, "Inactive numbers in TX queue");
2137         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_pending",
2138             &stats->st_tx_pending, "Pending numbers in TX queue");
2139 }
2140
2141 #undef UPGT_SYSCTL_STAT_ADD32
2142
2143 static struct upgt_data *
2144 _upgt_getbuf(struct upgt_softc *sc)
2145 {
2146         struct upgt_data *bf;
2147
2148         bf = STAILQ_FIRST(&sc->sc_tx_inactive);
2149         if (bf != NULL) {
2150                 STAILQ_REMOVE_HEAD(&sc->sc_tx_inactive, next);
2151                 UPGT_STAT_DEC(sc, st_tx_inactive);
2152         } else
2153                 bf = NULL;
2154         if (bf == NULL)
2155                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: %s\n", __func__,
2156                     "out of xmit buffers");
2157         return (bf);
2158 }
2159
2160 static struct upgt_data *
2161 upgt_getbuf(struct upgt_softc *sc)
2162 {
2163         struct upgt_data *bf;
2164
2165         UPGT_ASSERT_LOCKED(sc);
2166
2167         bf = _upgt_getbuf(sc);
2168         if (bf == NULL) {
2169                 struct ifnet *ifp = sc->sc_ifp;
2170
2171                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: stop queue\n", __func__);
2172                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2173         }
2174
2175         return (bf);
2176 }
2177
2178 static struct upgt_data *
2179 upgt_gettxbuf(struct upgt_softc *sc)
2180 {
2181         struct upgt_data *bf;
2182
2183         UPGT_ASSERT_LOCKED(sc);
2184
2185         bf = upgt_getbuf(sc);
2186         if (bf == NULL)
2187                 return (NULL);
2188
2189         bf->addr = upgt_mem_alloc(sc);
2190         if (bf->addr == 0) {
2191                 struct ifnet *ifp = sc->sc_ifp;
2192
2193                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: no free prism memory!\n",
2194                     __func__);
2195                 STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, bf, next);
2196                 UPGT_STAT_INC(sc, st_tx_inactive);
2197                 if (!(ifp->if_drv_flags & IFF_DRV_OACTIVE))
2198                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2199                 return (NULL);
2200         }
2201         return (bf);
2202 }
2203
2204 static int
2205 upgt_tx_start(struct upgt_softc *sc, struct mbuf *m, struct ieee80211_node *ni,
2206     struct upgt_data *data)
2207 {
2208         struct ieee80211vap *vap = ni->ni_vap;
2209         int error = 0, len;
2210         struct ieee80211_frame *wh;
2211         struct ieee80211_key *k;
2212         struct ifnet *ifp = sc->sc_ifp;
2213         struct upgt_lmac_mem *mem;
2214         struct upgt_lmac_tx_desc *txdesc;
2215
2216         UPGT_ASSERT_LOCKED(sc);
2217
2218         upgt_set_led(sc, UPGT_LED_BLINK);
2219
2220         /*
2221          * Software crypto.
2222          */
2223         wh = mtod(m, struct ieee80211_frame *);
2224         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
2225                 k = ieee80211_crypto_encap(ni, m);
2226                 if (k == NULL) {
2227                         device_printf(sc->sc_dev,
2228                             "ieee80211_crypto_encap returns NULL.\n");
2229                         error = EIO;
2230                         goto done;
2231                 }
2232
2233                 /* in case packet header moved, reset pointer */
2234                 wh = mtod(m, struct ieee80211_frame *);
2235         }
2236
2237         /* Transmit the URB containing the TX data.  */
2238         memset(data->buf, 0, MCLBYTES);
2239         mem = (struct upgt_lmac_mem *)data->buf;
2240         mem->addr = htole32(data->addr);
2241         txdesc = (struct upgt_lmac_tx_desc *)(mem + 1);
2242
2243         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
2244             IEEE80211_FC0_TYPE_MGT) {
2245                 /* mgmt frames  */
2246                 txdesc->header1.flags = UPGT_H1_FLAGS_TX_MGMT;
2247                 /* always send mgmt frames at lowest rate (DS1) */
2248                 memset(txdesc->rates, 0x10, sizeof(txdesc->rates));
2249         } else {
2250                 /* data frames  */
2251                 txdesc->header1.flags = UPGT_H1_FLAGS_TX_DATA;
2252                 memcpy(txdesc->rates, sc->sc_cur_rateset, sizeof(txdesc->rates));
2253         }
2254         txdesc->header1.type = UPGT_H1_TYPE_TX_DATA;
2255         txdesc->header1.len = htole16(m->m_pkthdr.len);
2256         txdesc->header2.reqid = htole32(data->addr);
2257         txdesc->header2.type = htole16(UPGT_H2_TYPE_TX_ACK_YES);
2258         txdesc->header2.flags = htole16(UPGT_H2_FLAGS_TX_ACK_YES);
2259         txdesc->type = htole32(UPGT_TX_DESC_TYPE_DATA);
2260         txdesc->pad3[0] = UPGT_TX_DESC_PAD3_SIZE;
2261
2262         if (ieee80211_radiotap_active_vap(vap)) {
2263                 struct upgt_tx_radiotap_header *tap = &sc->sc_txtap;
2264
2265                 tap->wt_flags = 0;
2266                 tap->wt_rate = 0;       /* XXX where to get from? */
2267
2268                 ieee80211_radiotap_tx(vap, m);
2269         }
2270
2271         /* copy frame below our TX descriptor header */
2272         m_copydata(m, 0, m->m_pkthdr.len,
2273             data->buf + (sizeof(*mem) + sizeof(*txdesc)));
2274         /* calculate frame size */
2275         len = sizeof(*mem) + sizeof(*txdesc) + m->m_pkthdr.len;
2276         /* we need to align the frame to a 4 byte boundary */
2277         len = (len + 3) & ~3;
2278         /* calculate frame checksum */
2279         mem->chksum = upgt_chksum_le((uint32_t *)txdesc, len - sizeof(*mem));
2280         data->ni = ni;
2281         data->m = m;
2282         data->buflen = len;
2283
2284         DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: TX start data sending (%d bytes)\n",
2285             __func__, len);
2286         KASSERT(len <= MCLBYTES, ("mbuf is small for saving data"));
2287
2288         upgt_bulk_tx(sc, data);
2289 done:
2290         /*
2291          * If we don't regulary read the device statistics, the RX queue
2292          * will stall.  It's strange, but it works, so we keep reading
2293          * the statistics here.  *shrug*
2294          */
2295         if (!(ifp->if_opackets % UPGT_TX_STAT_INTERVAL))
2296                 upgt_get_stats(sc);
2297
2298         return (error);
2299 }
2300
2301 static void
2302 upgt_bulk_rx_callback(struct usb_xfer *xfer, usb_error_t error)
2303 {
2304         struct upgt_softc *sc = usbd_xfer_softc(xfer);
2305         struct ifnet *ifp = sc->sc_ifp;
2306         struct ieee80211com *ic = ifp->if_l2com;
2307         struct ieee80211_frame *wh;
2308         struct ieee80211_node *ni;
2309         struct mbuf *m = NULL;
2310         struct upgt_data *data;
2311         int8_t nf;
2312         int rssi = -1;
2313
2314         UPGT_ASSERT_LOCKED(sc);
2315
2316         switch (USB_GET_STATE(xfer)) {
2317         case USB_ST_TRANSFERRED:
2318                 data = STAILQ_FIRST(&sc->sc_rx_active);
2319                 if (data == NULL)
2320                         goto setup;
2321                 STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2322                 m = upgt_rxeof(xfer, data, &rssi);
2323                 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2324                 /* FALLTHROUGH */
2325         case USB_ST_SETUP:
2326 setup:
2327                 data = STAILQ_FIRST(&sc->sc_rx_inactive);
2328                 if (data == NULL)
2329                         return;
2330                 STAILQ_REMOVE_HEAD(&sc->sc_rx_inactive, next);
2331                 STAILQ_INSERT_TAIL(&sc->sc_rx_active, data, next);
2332                 usbd_xfer_set_frame_data(xfer, 0, data->buf, MCLBYTES);
2333                 usbd_transfer_submit(xfer);
2334
2335                 /*
2336                  * To avoid LOR we should unlock our private mutex here to call
2337                  * ieee80211_input() because here is at the end of a USB
2338                  * callback and safe to unlock.
2339                  */
2340                 UPGT_UNLOCK(sc);
2341                 if (m != NULL) {
2342                         wh = mtod(m, struct ieee80211_frame *);
2343                         ni = ieee80211_find_rxnode(ic,
2344                             (struct ieee80211_frame_min *)wh);
2345                         nf = -95;       /* XXX */
2346                         if (ni != NULL) {
2347                                 (void) ieee80211_input(ni, m, rssi, nf);
2348                                 /* node is no longer needed */
2349                                 ieee80211_free_node(ni);
2350                         } else
2351                                 (void) ieee80211_input_all(ic, m, rssi, nf);
2352                         m = NULL;
2353                 }
2354                 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
2355                     !IFQ_IS_EMPTY(&ifp->if_snd))
2356                         upgt_start(ifp);
2357                 UPGT_LOCK(sc);
2358                 break;
2359         default:
2360                 /* needs it to the inactive queue due to a error.  */
2361                 data = STAILQ_FIRST(&sc->sc_rx_active);
2362                 if (data != NULL) {
2363                         STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2364                         STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2365                 }
2366                 if (error != USB_ERR_CANCELLED) {
2367                         usbd_xfer_set_stall(xfer);
2368                         ifp->if_ierrors++;
2369                         goto setup;
2370                 }
2371                 break;
2372         }
2373 }
2374
2375 static void
2376 upgt_bulk_tx_callback(struct usb_xfer *xfer, usb_error_t error)
2377 {
2378         struct upgt_softc *sc = usbd_xfer_softc(xfer);
2379         struct ifnet *ifp = sc->sc_ifp;
2380         struct upgt_data *data;
2381
2382         UPGT_ASSERT_LOCKED(sc);
2383         switch (USB_GET_STATE(xfer)) {
2384         case USB_ST_TRANSFERRED:
2385                 data = STAILQ_FIRST(&sc->sc_tx_active);
2386                 if (data == NULL)
2387                         goto setup;
2388                 STAILQ_REMOVE_HEAD(&sc->sc_tx_active, next);
2389                 UPGT_STAT_DEC(sc, st_tx_active);
2390                 upgt_txeof(xfer, data);
2391                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
2392                 UPGT_STAT_INC(sc, st_tx_inactive);
2393                 /* FALLTHROUGH */
2394         case USB_ST_SETUP:
2395 setup:
2396                 data = STAILQ_FIRST(&sc->sc_tx_pending);
2397                 if (data == NULL) {
2398                         DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: empty pending queue\n",
2399                             __func__);
2400                         return;
2401                 }
2402                 STAILQ_REMOVE_HEAD(&sc->sc_tx_pending, next);
2403                 UPGT_STAT_DEC(sc, st_tx_pending);
2404                 STAILQ_INSERT_TAIL(&sc->sc_tx_active, data, next);
2405                 UPGT_STAT_INC(sc, st_tx_active);
2406
2407                 usbd_xfer_set_frame_data(xfer, 0, data->buf, data->buflen);
2408                 usbd_transfer_submit(xfer);
2409                 UPGT_UNLOCK(sc);
2410                 upgt_start(ifp);
2411                 UPGT_LOCK(sc);
2412                 break;
2413         default:
2414                 data = STAILQ_FIRST(&sc->sc_tx_active);
2415                 if (data == NULL)
2416                         goto setup;
2417                 if (data->ni != NULL) {
2418                         ieee80211_free_node(data->ni);
2419                         data->ni = NULL;
2420                         ifp->if_oerrors++;
2421                 }
2422                 if (error != USB_ERR_CANCELLED) {
2423                         usbd_xfer_set_stall(xfer);
2424                         goto setup;
2425                 }
2426                 break;
2427         }
2428 }
2429
2430 static device_method_t upgt_methods[] = {
2431         /* Device interface */
2432         DEVMETHOD(device_probe, upgt_match),
2433         DEVMETHOD(device_attach, upgt_attach),
2434         DEVMETHOD(device_detach, upgt_detach),
2435         DEVMETHOD_END
2436 };
2437
2438 static driver_t upgt_driver = {
2439         .name = "upgt",
2440         .methods = upgt_methods,
2441         .size = sizeof(struct upgt_softc)
2442 };
2443
2444 static devclass_t upgt_devclass;
2445
2446 DRIVER_MODULE(if_upgt, uhub, upgt_driver, upgt_devclass, NULL, 0);
2447 MODULE_VERSION(if_upgt, 1);
2448 MODULE_DEPEND(if_upgt, usb, 1, 1, 1);
2449 MODULE_DEPEND(if_upgt, wlan, 1, 1, 1);
2450 MODULE_DEPEND(if_upgt, upgtfw_fw, 1, 1, 1);