sys/dev/usb/wlan/if_upgt.c

   1 /*      $OpenBSD: if_upgt.c,v 1.35 2008/04/16 18:32:15 damien Exp $ */
   2 /*      $FreeBSD$ */
   3
   4 /*
   5  * Copyright (c) 2007 Marcus Glocker <mglocker@openbsd.org>
   6  *
   7  * Permission to use, copy, modify, and distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 #include <sys/param.h>
  21 #include <sys/systm.h>
  22 #include <sys/kernel.h>
  23 #include <sys/endian.h>
  24 #include <sys/firmware.h>
  25 #include <sys/linker.h>
  26 #include <sys/mbuf.h>
  27 #include <sys/malloc.h>
  28 #include <sys/module.h>
  29 #include <sys/socket.h>
  30 #include <sys/sockio.h>
  31 #include <sys/sysctl.h>
  32
  33 #include <net/if.h>
  34 #include <net/if_arp.h>
  35 #include <net/ethernet.h>
  36 #include <net/if_dl.h>
  37 #include <net/if_media.h>
  38 #include <net/if_types.h>
  39
  40 #include <sys/bus.h>
  41 #include <machine/bus.h>
  42
  43 #include <net80211/ieee80211_var.h>
  44 #include <net80211/ieee80211_phy.h>
  45 #include <net80211/ieee80211_radiotap.h>
  46 #include <net80211/ieee80211_regdomain.h>
  47
  48 #include <net/bpf.h>
  49
  50 #include <dev/usb/usb.h>
  51 #include <dev/usb/usbdi.h>
  52 #include "usbdevs.h"
  53
  54 #include <dev/usb/wlan/if_upgtvar.h>
  55
  56 /*
  57  * Driver for the USB PrismGT devices.
  58  *
  59  * For now just USB 2.0 devices with the GW3887 chipset are supported.
  60  * The driver has been written based on the firmware version 2.13.1.0_LM87.
  61  *
  62  * TODO's:
  63  * - MONITOR mode test.
  64  * - Add HOSTAP mode.
  65  * - Add IBSS mode.
  66  * - Support the USB 1.0 devices (NET2280, ISL3880, ISL3886 chipsets).
  67  *
  68  * Parts of this driver has been influenced by reading the p54u driver
  69  * written by Jean-Baptiste Note <jean-baptiste.note@m4x.org> and
  70  * Sebastien Bourdeauducq <lekernel@prism54.org>.
  71  */
  72
  73 static SYSCTL_NODE(_hw, OID_AUTO, upgt, CTLFLAG_RD, 0,
  74     "USB PrismGT GW3887 driver parameters");
  75
  76 #ifdef UPGT_DEBUG
  77 int upgt_debug = 0;
  78 SYSCTL_INT(_hw_upgt, OID_AUTO, debug, CTLFLAG_RW | CTLFLAG_TUN, &upgt_debug,
  79             0, "control debugging printfs");
  80 TUNABLE_INT("hw.upgt.debug", &upgt_debug);
  81 enum {
  82         UPGT_DEBUG_XMIT         = 0x00000001,   /* basic xmit operation */
  83         UPGT_DEBUG_RECV         = 0x00000002,   /* basic recv operation */
  84         UPGT_DEBUG_RESET        = 0x00000004,   /* reset processing */
  85         UPGT_DEBUG_INTR         = 0x00000008,   /* INTR */
  86         UPGT_DEBUG_TX_PROC      = 0x00000010,   /* tx ISR proc */
  87         UPGT_DEBUG_RX_PROC      = 0x00000020,   /* rx ISR proc */
  88         UPGT_DEBUG_STATE        = 0x00000040,   /* 802.11 state transitions */
  89         UPGT_DEBUG_STAT         = 0x00000080,   /* statistic */
  90         UPGT_DEBUG_FW           = 0x00000100,   /* firmware */
  91         UPGT_DEBUG_ANY          = 0xffffffff
  92 };
  93 #define DPRINTF(sc, m, fmt, ...) do {                           \
  94         if (sc->sc_debug & (m))                                 \
  95                 printf(fmt, __VA_ARGS__);                       \
  96 } while (0)
  97 #else
  98 #define DPRINTF(sc, m, fmt, ...) do {                           \
  99         (void) sc;                                              \
 100 } while (0)
 101 #endif
 102
 103 /*
 104  * Prototypes.
 105  */
 106 static device_probe_t upgt_match;
 107 static device_attach_t upgt_attach;
 108 static device_detach_t upgt_detach;
 109 static int      upgt_alloc_tx(struct upgt_softc *);
 110 static int      upgt_alloc_rx(struct upgt_softc *);
 111 static int      upgt_device_reset(struct upgt_softc *);
 112 static void     upgt_bulk_tx(struct upgt_softc *, struct upgt_data *);
 113 static int      upgt_fw_verify(struct upgt_softc *);
 114 static int      upgt_mem_init(struct upgt_softc *);
 115 static int      upgt_fw_load(struct upgt_softc *);
 116 static int      upgt_fw_copy(const uint8_t *, char *, int);
 117 static uint32_t upgt_crc32_le(const void *, size_t);
 118 static struct mbuf *
 119                 upgt_rxeof(struct usb_xfer *, struct upgt_data *, int *);
 120 static struct mbuf *
 121                 upgt_rx(struct upgt_softc *, uint8_t *, int, int *);
 122 static void     upgt_txeof(struct usb_xfer *, struct upgt_data *);
 123 static int      upgt_eeprom_read(struct upgt_softc *);
 124 static int      upgt_eeprom_parse(struct upgt_softc *);
 125 static void     upgt_eeprom_parse_hwrx(struct upgt_softc *, uint8_t *);
 126 static void     upgt_eeprom_parse_freq3(struct upgt_softc *, uint8_t *, int);
 127 static void     upgt_eeprom_parse_freq4(struct upgt_softc *, uint8_t *, int);
 128 static void     upgt_eeprom_parse_freq6(struct upgt_softc *, uint8_t *, int);
 129 static uint32_t upgt_chksum_le(const uint32_t *, size_t);
 130 static void     upgt_tx_done(struct upgt_softc *, uint8_t *);
 131 static void     upgt_init(void *);
 132 static void     upgt_init_locked(struct upgt_softc *);
 133 static int      upgt_ioctl(struct ifnet *, u_long, caddr_t);
 134 static void     upgt_start(struct ifnet *);
 135 static int      upgt_raw_xmit(struct ieee80211_node *, struct mbuf *,
 136                     const struct ieee80211_bpf_params *);
 137 static void     upgt_scan_start(struct ieee80211com *);
 138 static void     upgt_scan_end(struct ieee80211com *);
 139 static void     upgt_set_channel(struct ieee80211com *);
 140 static struct ieee80211vap *upgt_vap_create(struct ieee80211com *,
 141                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
 142                     const uint8_t [IEEE80211_ADDR_LEN],
 143                     const uint8_t [IEEE80211_ADDR_LEN]);
 144 static void     upgt_vap_delete(struct ieee80211vap *);
 145 static void     upgt_update_mcast(struct ifnet *);
 146 static uint8_t  upgt_rx_rate(struct upgt_softc *, const int);
 147 static void     upgt_set_multi(void *);
 148 static void     upgt_stop(struct upgt_softc *);
 149 static void     upgt_setup_rates(struct ieee80211vap *, struct ieee80211com *);
 150 static int      upgt_set_macfilter(struct upgt_softc *, uint8_t);
 151 static int      upgt_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 152 static void     upgt_set_chan(struct upgt_softc *, struct ieee80211_channel *);
 153 static void     upgt_set_led(struct upgt_softc *, int);
 154 static void     upgt_set_led_blink(void *);
 155 static void     upgt_get_stats(struct upgt_softc *);
 156 static void     upgt_mem_free(struct upgt_softc *, uint32_t);
 157 static uint32_t upgt_mem_alloc(struct upgt_softc *);
 158 static void     upgt_free_tx(struct upgt_softc *);
 159 static void     upgt_free_rx(struct upgt_softc *);
 160 static void     upgt_watchdog(void *);
 161 static void     upgt_abort_xfers(struct upgt_softc *);
 162 static void     upgt_abort_xfers_locked(struct upgt_softc *);
 163 static void     upgt_sysctl_node(struct upgt_softc *);
 164 static struct upgt_data *
 165                 upgt_getbuf(struct upgt_softc *);
 166 static struct upgt_data *
 167                 upgt_gettxbuf(struct upgt_softc *);
 168 static int      upgt_tx_start(struct upgt_softc *, struct mbuf *,
 169                     struct ieee80211_node *, struct upgt_data *);
 170
 171 static const char *upgt_fwname = "upgt-gw3887";
 172
 173 static const STRUCT_USB_HOST_ID upgt_devs[] = {
 174 #define UPGT_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
 175         /* version 2 devices */
 176         UPGT_DEV(ACCTON,        PRISM_GT),
 177         UPGT_DEV(BELKIN,        F5D7050),
 178         UPGT_DEV(CISCOLINKSYS,  WUSB54AG),
 179         UPGT_DEV(CONCEPTRONIC,  PRISM_GT),
 180         UPGT_DEV(DELL,          PRISM_GT_1),
 181         UPGT_DEV(DELL,          PRISM_GT_2),
 182         UPGT_DEV(FSC,           E5400),
 183         UPGT_DEV(GLOBESPAN,     PRISM_GT_1),
 184         UPGT_DEV(GLOBESPAN,     PRISM_GT_2),
 185         UPGT_DEV(NETGEAR,       WG111V2_2),
 186         UPGT_DEV(INTERSIL,      PRISM_GT),
 187         UPGT_DEV(SMC,           2862WG),
 188         UPGT_DEV(USR,           USR5422),
 189         UPGT_DEV(WISTRONNEWEB,  UR045G),
 190         UPGT_DEV(XYRATEX,       PRISM_GT_1),
 191         UPGT_DEV(XYRATEX,       PRISM_GT_2),
 192         UPGT_DEV(ZCOM,          XG703A),
 193         UPGT_DEV(ZCOM,          XM142)
 194 };
 195
 196 static usb_callback_t upgt_bulk_rx_callback;
 197 static usb_callback_t upgt_bulk_tx_callback;
 198
 199 static const struct usb_config upgt_config[UPGT_N_XFERS] = {
 200         [UPGT_BULK_TX] = {
 201                 .type = UE_BULK,
 202                 .endpoint = UE_ADDR_ANY,
 203                 .direction = UE_DIR_OUT,
 204                 .bufsize = MCLBYTES * UPGT_TX_MAXCOUNT,
 205                 .flags = {
 206                         .force_short_xfer = 1,
 207                         .pipe_bof = 1
 208                 },
 209                 .callback = upgt_bulk_tx_callback,
 210                 .timeout = UPGT_USB_TIMEOUT,    /* ms */
 211         },
 212         [UPGT_BULK_RX] = {
 213                 .type = UE_BULK,
 214                 .endpoint = UE_ADDR_ANY,
 215                 .direction = UE_DIR_IN,
 216                 .bufsize = MCLBYTES * UPGT_RX_MAXCOUNT,
 217                 .flags = {
 218                         .pipe_bof = 1,
 219                         .short_xfer_ok = 1
 220                 },
 221                 .callback = upgt_bulk_rx_callback,
 222         },
 223 };
 224
 225 static int
 226 upgt_match(device_t dev)
 227 {
 228         struct usb_attach_arg *uaa = device_get_ivars(dev);
 229
 230         if (uaa->usb_mode != USB_MODE_HOST)
 231                 return (ENXIO);
 232         if (uaa->info.bConfigIndex != UPGT_CONFIG_INDEX)
 233                 return (ENXIO);
 234         if (uaa->info.bIfaceIndex != UPGT_IFACE_INDEX)
 235                 return (ENXIO);
 236
 237         return (usbd_lookup_id_by_uaa(upgt_devs, sizeof(upgt_devs), uaa));
 238 }
 239
 240 static int
 241 upgt_attach(device_t dev)
 242 {
 243         int error;
 244         struct ieee80211com *ic;
 245         struct ifnet *ifp;
 246         struct upgt_softc *sc = device_get_softc(dev);
 247         struct usb_attach_arg *uaa = device_get_ivars(dev);
 248         uint8_t bands, iface_index = UPGT_IFACE_INDEX;
 249
 250         sc->sc_dev = dev;
 251         sc->sc_udev = uaa->device;
 252 #ifdef UPGT_DEBUG
 253         sc->sc_debug = upgt_debug;
 254 #endif
 255         device_set_usb_desc(dev);
 256
 257         mtx_init(&sc->sc_mtx, device_get_nameunit(sc->sc_dev), MTX_NETWORK_LOCK,
 258             MTX_DEF);
 259         callout_init(&sc->sc_led_ch, 0);
 260         callout_init(&sc->sc_watchdog_ch, 0);
 261
 262         error = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer,
 263             upgt_config, UPGT_N_XFERS, sc, &sc->sc_mtx);
 264         if (error) {
 265                 device_printf(dev, "could not allocate USB transfers, "
 266                     "err=%s\n", usbd_errstr(error));
 267                 goto fail1;
 268         }
 269
 270         sc->sc_rx_dma_buf = usbd_xfer_get_frame_buffer(
 271             sc->sc_xfer[UPGT_BULK_RX], 0);
 272         sc->sc_tx_dma_buf = usbd_xfer_get_frame_buffer(
 273             sc->sc_xfer[UPGT_BULK_TX], 0);
 274
 275         /* Setup TX and RX buffers */
 276         error = upgt_alloc_tx(sc);
 277         if (error)
 278                 goto fail2;
 279         error = upgt_alloc_rx(sc);
 280         if (error)
 281                 goto fail3;
 282
 283         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 284         if (ifp == NULL) {
 285                 device_printf(dev, "can not if_alloc()\n");
 286                 goto fail4;
 287         }
 288
 289         /* Initialize the device.  */
 290         error = upgt_device_reset(sc);
 291         if (error)
 292                 goto fail5;
 293         /* Verify the firmware.  */
 294         error = upgt_fw_verify(sc);
 295         if (error)
 296                 goto fail5;
 297         /* Calculate device memory space.  */
 298         if (sc->sc_memaddr_frame_start == 0 || sc->sc_memaddr_frame_end == 0) {
 299                 device_printf(dev,
 300                     "could not find memory space addresses on FW\n");
 301                 error = EIO;
 302                 goto fail5;
 303         }
 304         sc->sc_memaddr_frame_end -= UPGT_MEMSIZE_RX + 1;
 305         sc->sc_memaddr_rx_start = sc->sc_memaddr_frame_end + 1;
 306
 307         DPRINTF(sc, UPGT_DEBUG_FW, "memory address frame start=0x%08x\n",
 308             sc->sc_memaddr_frame_start);
 309         DPRINTF(sc, UPGT_DEBUG_FW, "memory address frame end=0x%08x\n",
 310             sc->sc_memaddr_frame_end);
 311         DPRINTF(sc, UPGT_DEBUG_FW, "memory address rx start=0x%08x\n",
 312             sc->sc_memaddr_rx_start);
 313
 314         upgt_mem_init(sc);
 315
 316         /* Load the firmware.  */
 317         error = upgt_fw_load(sc);
 318         if (error)
 319                 goto fail5;
 320
 321         /* Read the whole EEPROM content and parse it.  */
 322         error = upgt_eeprom_read(sc);
 323         if (error)
 324                 goto fail5;
 325         error = upgt_eeprom_parse(sc);
 326         if (error)
 327                 goto fail5;
 328
 329         /* all works related with the device have done here. */
 330         upgt_abort_xfers(sc);
 331
 332         /* Setup the 802.11 device.  */
 333         ifp->if_softc = sc;
 334         if_initname(ifp, "upgt", device_get_unit(sc->sc_dev));
 335         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 336         ifp->if_init = upgt_init;
 337         ifp->if_ioctl = upgt_ioctl;
 338         ifp->if_start = upgt_start;
 339         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 340         IFQ_SET_READY(&ifp->if_snd);
 341
 342         ic = ifp->if_l2com;
 343         ic->ic_ifp = ifp;
 344         ic->ic_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
 345         ic->ic_opmode = IEEE80211_M_STA;
 346         /* set device capabilities */
 347         ic->ic_caps =
 348                   IEEE80211_C_STA               /* station mode */
 349                 | IEEE80211_C_MONITOR           /* monitor mode */
 350                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 351                 | IEEE80211_C_SHSLOT            /* short slot time supported */
 352                 | IEEE80211_C_BGSCAN            /* capable of bg scanning */
 353                 | IEEE80211_C_WPA               /* 802.11i */
 354                 ;
 355
 356         bands = 0;
 357         setbit(&bands, IEEE80211_MODE_11B);
 358         setbit(&bands, IEEE80211_MODE_11G);
 359         ieee80211_init_channels(ic, NULL, &bands);
 360
 361         ieee80211_ifattach(ic, sc->sc_myaddr);
 362         ic->ic_raw_xmit = upgt_raw_xmit;
 363         ic->ic_scan_start = upgt_scan_start;
 364         ic->ic_scan_end = upgt_scan_end;
 365         ic->ic_set_channel = upgt_set_channel;
 366
 367         ic->ic_vap_create = upgt_vap_create;
 368         ic->ic_vap_delete = upgt_vap_delete;
 369         ic->ic_update_mcast = upgt_update_mcast;
 370
 371         ieee80211_radiotap_attach(ic,
 372             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 373                 UPGT_TX_RADIOTAP_PRESENT,
 374             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 375                 UPGT_RX_RADIOTAP_PRESENT);
 376
 377         upgt_sysctl_node(sc);
 378
 379         if (bootverbose)
 380                 ieee80211_announce(ic);
 381
 382         return (0);
 383
 384 fail5:  if_free(ifp);
 385 fail4:  upgt_free_rx(sc);
 386 fail3:  upgt_free_tx(sc);
 387 fail2:  usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
 388 fail1:  mtx_destroy(&sc->sc_mtx);
 389
 390         return (error);
 391 }
 392
 393 static void
 394 upgt_txeof(struct usb_xfer *xfer, struct upgt_data *data)
 395 {
 396         struct upgt_softc *sc = usbd_xfer_softc(xfer);
 397         struct ifnet *ifp = sc->sc_ifp;
 398         struct mbuf *m;
 399
 400         UPGT_ASSERT_LOCKED(sc);
 401
 402         /*
 403          * Do any tx complete callback.  Note this must be done before releasing
 404          * the node reference.
 405          */
 406         if (data->m) {
 407                 m = data->m;
 408                 if (m->m_flags & M_TXCB) {
 409                         /* XXX status? */
 410                         ieee80211_process_callback(data->ni, m, 0);
 411                 }
 412                 m_freem(m);
 413                 data->m = NULL;
 414         }
 415         if (data->ni) {
 416                 ieee80211_free_node(data->ni);
 417                 data->ni = NULL;
 418         }
 419         ifp->if_opackets++;
 420 }
 421
 422 static void
 423 upgt_get_stats(struct upgt_softc *sc)
 424 {
 425         struct upgt_data *data_cmd;
 426         struct upgt_lmac_mem *mem;
 427         struct upgt_lmac_stats *stats;
 428
 429         data_cmd = upgt_getbuf(sc);
 430         if (data_cmd == NULL) {
 431                 device_printf(sc->sc_dev, "%s: out of buffer.\n", __func__);
 432                 return;
 433         }
 434
 435         /*
 436          * Transmit the URB containing the CMD data.
 437          */
 438         memset(data_cmd->buf, 0, MCLBYTES);
 439
 440         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 441         mem->addr = htole32(sc->sc_memaddr_frame_start +
 442             UPGT_MEMSIZE_FRAME_HEAD);
 443
 444         stats = (struct upgt_lmac_stats *)(mem + 1);
 445
 446         stats->header1.flags = 0;
 447         stats->header1.type = UPGT_H1_TYPE_CTRL;
 448         stats->header1.len = htole16(
 449             sizeof(struct upgt_lmac_stats) - sizeof(struct upgt_lmac_header));
 450
 451         stats->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 452         stats->header2.type = htole16(UPGT_H2_TYPE_STATS);
 453         stats->header2.flags = 0;
 454
 455         data_cmd->buflen = sizeof(*mem) + sizeof(*stats);
 456
 457         mem->chksum = upgt_chksum_le((uint32_t *)stats,
 458             data_cmd->buflen - sizeof(*mem));
 459
 460         upgt_bulk_tx(sc, data_cmd);
 461 }
 462
 463 static int
 464 upgt_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 465 {
 466         struct upgt_softc *sc = ifp->if_softc;
 467         struct ieee80211com *ic = ifp->if_l2com;
 468         struct ifreq *ifr = (struct ifreq *) data;
 469         int error = 0, startall = 0;
 470
 471         switch (cmd) {
 472         case SIOCSIFFLAGS:
 473                 if (ifp->if_flags & IFF_UP) {
 474                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 475                                 if ((ifp->if_flags ^ sc->sc_if_flags) &
 476                                     (IFF_ALLMULTI | IFF_PROMISC))
 477                                         upgt_set_multi(sc);
 478                         } else {
 479                                 upgt_init(sc);
 480                                 startall = 1;
 481                         }
 482                 } else {
 483                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 484                                 upgt_stop(sc);
 485                 }
 486                 sc->sc_if_flags = ifp->if_flags;
 487                 if (startall)
 488                         ieee80211_start_all(ic);
 489                 break;
 490         case SIOCGIFMEDIA:
 491                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
 492                 break;
 493         case SIOCGIFADDR:
 494                 error = ether_ioctl(ifp, cmd, data);
 495                 break;
 496         default:
 497                 error = EINVAL;
 498                 break;
 499         }
 500         return error;
 501 }
 502
 503 static void
 504 upgt_stop_locked(struct upgt_softc *sc)
 505 {
 506         struct ifnet *ifp = sc->sc_ifp;
 507
 508         UPGT_ASSERT_LOCKED(sc);
 509
 510         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 511                 upgt_set_macfilter(sc, IEEE80211_S_INIT);
 512         upgt_abort_xfers_locked(sc);
 513 }
 514
 515 static void
 516 upgt_stop(struct upgt_softc *sc)
 517 {
 518         struct ifnet *ifp = sc->sc_ifp;
 519
 520         UPGT_LOCK(sc);
 521         upgt_stop_locked(sc);
 522         UPGT_UNLOCK(sc);
 523
 524         /* device down */
 525         sc->sc_tx_timer = 0;
 526         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
 527         sc->sc_flags &= ~UPGT_FLAG_INITDONE;
 528 }
 529
 530 static void
 531 upgt_set_led(struct upgt_softc *sc, int action)
 532 {
 533         struct upgt_data *data_cmd;
 534         struct upgt_lmac_mem *mem;
 535         struct upgt_lmac_led *led;
 536
 537         data_cmd = upgt_getbuf(sc);
 538         if (data_cmd == NULL) {
 539                 device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
 540                 return;
 541         }
 542
 543         /*
 544          * Transmit the URB containing the CMD data.
 545          */
 546         memset(data_cmd->buf, 0, MCLBYTES);
 547
 548         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 549         mem->addr = htole32(sc->sc_memaddr_frame_start +
 550             UPGT_MEMSIZE_FRAME_HEAD);
 551
 552         led = (struct upgt_lmac_led *)(mem + 1);
 553
 554         led->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 555         led->header1.type = UPGT_H1_TYPE_CTRL;
 556         led->header1.len = htole16(
 557             sizeof(struct upgt_lmac_led) -
 558             sizeof(struct upgt_lmac_header));
 559
 560         led->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 561         led->header2.type = htole16(UPGT_H2_TYPE_LED);
 562         led->header2.flags = 0;
 563
 564         switch (action) {
 565         case UPGT_LED_OFF:
 566                 led->mode = htole16(UPGT_LED_MODE_SET);
 567                 led->action_fix = 0;
 568                 led->action_tmp = htole16(UPGT_LED_ACTION_OFF);
 569                 led->action_tmp_dur = 0;
 570                 break;
 571         case UPGT_LED_ON:
 572                 led->mode = htole16(UPGT_LED_MODE_SET);
 573                 led->action_fix = 0;
 574                 led->action_tmp = htole16(UPGT_LED_ACTION_ON);
 575                 led->action_tmp_dur = 0;
 576                 break;
 577         case UPGT_LED_BLINK:
 578                 if (sc->sc_state != IEEE80211_S_RUN) {
 579                         STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 580                         return;
 581                 }
 582                 if (sc->sc_led_blink) {
 583                         /* previous blink was not finished */
 584                         STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 585                         return;
 586                 }
 587                 led->mode = htole16(UPGT_LED_MODE_SET);
 588                 led->action_fix = htole16(UPGT_LED_ACTION_OFF);
 589                 led->action_tmp = htole16(UPGT_LED_ACTION_ON);
 590                 led->action_tmp_dur = htole16(UPGT_LED_ACTION_TMP_DUR);
 591                 /* lock blink */
 592                 sc->sc_led_blink = 1;
 593                 callout_reset(&sc->sc_led_ch, hz, upgt_set_led_blink, sc);
 594                 break;
 595         default:
 596                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 597                 return;
 598         }
 599
 600         data_cmd->buflen = sizeof(*mem) + sizeof(*led);
 601
 602         mem->chksum = upgt_chksum_le((uint32_t *)led,
 603             data_cmd->buflen - sizeof(*mem));
 604
 605         upgt_bulk_tx(sc, data_cmd);
 606 }
 607
 608 static void
 609 upgt_set_led_blink(void *arg)
 610 {
 611         struct upgt_softc *sc = arg;
 612
 613         /* blink finished, we are ready for a next one */
 614         sc->sc_led_blink = 0;
 615 }
 616
 617 static void
 618 upgt_init(void *priv)
 619 {
 620         struct upgt_softc *sc = priv;
 621         struct ifnet *ifp = sc->sc_ifp;
 622         struct ieee80211com *ic = ifp->if_l2com;
 623
 624         UPGT_LOCK(sc);
 625         upgt_init_locked(sc);
 626         UPGT_UNLOCK(sc);
 627
 628         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 629                 ieee80211_start_all(ic);                /* start all vap's */
 630 }
 631
 632 static void
 633 upgt_init_locked(struct upgt_softc *sc)
 634 {
 635         struct ifnet *ifp = sc->sc_ifp;
 636
 637         UPGT_ASSERT_LOCKED(sc);
 638
 639         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 640                 upgt_stop_locked(sc);
 641
 642         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_RX]);
 643
 644         (void)upgt_set_macfilter(sc, IEEE80211_S_SCAN);
 645
 646         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 647         ifp->if_drv_flags |= IFF_DRV_RUNNING;
 648         sc->sc_flags |= UPGT_FLAG_INITDONE;
 649
 650         callout_reset(&sc->sc_watchdog_ch, hz, upgt_watchdog, sc);
 651 }
 652
 653 static int
 654 upgt_set_macfilter(struct upgt_softc *sc, uint8_t state)
 655 {
 656         struct ifnet *ifp = sc->sc_ifp;
 657         struct ieee80211com *ic = ifp->if_l2com;
 658         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
 659         struct ieee80211_node *ni;
 660         struct upgt_data *data_cmd;
 661         struct upgt_lmac_mem *mem;
 662         struct upgt_lmac_filter *filter;
 663         uint8_t broadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 664
 665         UPGT_ASSERT_LOCKED(sc);
 666
 667         data_cmd = upgt_getbuf(sc);
 668         if (data_cmd == NULL) {
 669                 device_printf(sc->sc_dev, "out of TX buffers.\n");
 670                 return (ENOBUFS);
 671         }
 672
 673         /*
 674          * Transmit the URB containing the CMD data.
 675          */
 676         memset(data_cmd->buf, 0, MCLBYTES);
 677
 678         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 679         mem->addr = htole32(sc->sc_memaddr_frame_start +
 680             UPGT_MEMSIZE_FRAME_HEAD);
 681
 682         filter = (struct upgt_lmac_filter *)(mem + 1);
 683
 684         filter->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 685         filter->header1.type = UPGT_H1_TYPE_CTRL;
 686         filter->header1.len = htole16(
 687             sizeof(struct upgt_lmac_filter) -
 688             sizeof(struct upgt_lmac_header));
 689
 690         filter->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 691         filter->header2.type = htole16(UPGT_H2_TYPE_MACFILTER);
 692         filter->header2.flags = 0;
 693
 694         switch (state) {
 695         case IEEE80211_S_INIT:
 696                 DPRINTF(sc, UPGT_DEBUG_STATE, "%s: set MAC filter to INIT\n",
 697                     __func__);
 698                 filter->type = htole16(UPGT_FILTER_TYPE_RESET);
 699                 break;
 700         case IEEE80211_S_SCAN:
 701                 DPRINTF(sc, UPGT_DEBUG_STATE,
 702                     "set MAC filter to SCAN (bssid %s)\n",
 703                     ether_sprintf(broadcast));
 704                 filter->type = htole16(UPGT_FILTER_TYPE_NONE);
 705                 IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 706                 IEEE80211_ADDR_COPY(filter->src, broadcast);
 707                 filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1);
 708                 filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 709                 filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2);
 710                 filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 711                 filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3);
 712                 break;
 713         case IEEE80211_S_RUN:
 714                 ni = ieee80211_ref_node(vap->iv_bss);
 715                 /* XXX monitor mode isn't tested yet.  */
 716                 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
 717                         filter->type = htole16(UPGT_FILTER_TYPE_MONITOR);
 718                         IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 719                         IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid);
 720                         filter->unknown1 = htole16(UPGT_FILTER_MONITOR_UNKNOWN1);
 721                         filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 722                         filter->unknown2 = htole16(UPGT_FILTER_MONITOR_UNKNOWN2);
 723                         filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 724                         filter->unknown3 = htole16(UPGT_FILTER_MONITOR_UNKNOWN3);
 725                 } else {
 726                         DPRINTF(sc, UPGT_DEBUG_STATE,
 727                             "set MAC filter to RUN (bssid %s)\n",
 728                             ether_sprintf(ni->ni_bssid));
 729                         filter->type = htole16(UPGT_FILTER_TYPE_STA);
 730                         IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 731                         IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid);
 732                         filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1);
 733                         filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 734                         filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2);
 735                         filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 736                         filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3);
 737                 }
 738                 ieee80211_free_node(ni);
 739                 break;
 740         default:
 741                 device_printf(sc->sc_dev,
 742                     "MAC filter does not know that state\n");
 743                 break;
 744         }
 745
 746         data_cmd->buflen = sizeof(*mem) + sizeof(*filter);
 747
 748         mem->chksum = upgt_chksum_le((uint32_t *)filter,
 749             data_cmd->buflen - sizeof(*mem));
 750
 751         upgt_bulk_tx(sc, data_cmd);
 752
 753         return (0);
 754 }
 755
 756 static void
 757 upgt_setup_rates(struct ieee80211vap *vap, struct ieee80211com *ic)
 758 {
 759         struct ifnet *ifp = ic->ic_ifp;
 760         struct upgt_softc *sc = ifp->if_softc;
 761         const struct ieee80211_txparam *tp;
 762
 763         /*
 764          * 0x01 = OFMD6   0x10 = DS1
 765          * 0x04 = OFDM9   0x11 = DS2
 766          * 0x06 = OFDM12  0x12 = DS5
 767          * 0x07 = OFDM18  0x13 = DS11
 768          * 0x08 = OFDM24
 769          * 0x09 = OFDM36
 770          * 0x0a = OFDM48
 771          * 0x0b = OFDM54
 772          */
 773         const uint8_t rateset_auto_11b[] =
 774             { 0x13, 0x13, 0x12, 0x11, 0x11, 0x10, 0x10, 0x10 };
 775         const uint8_t rateset_auto_11g[] =
 776             { 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x04, 0x01 };
 777         const uint8_t rateset_fix_11bg[] =
 778             { 0x10, 0x11, 0x12, 0x13, 0x01, 0x04, 0x06, 0x07,
 779               0x08, 0x09, 0x0a, 0x0b };
 780
 781         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
 782
 783         /* XXX */
 784         if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) {
 785                 /*
 786                  * Automatic rate control is done by the device.
 787                  * We just pass the rateset from which the device
 788                  * will pickup a rate.
 789                  */
 790                 if (ic->ic_curmode == IEEE80211_MODE_11B)
 791                         memcpy(sc->sc_cur_rateset, rateset_auto_11b,
 792                             sizeof(sc->sc_cur_rateset));
 793                 if (ic->ic_curmode == IEEE80211_MODE_11G ||
 794                     ic->ic_curmode == IEEE80211_MODE_AUTO)
 795                         memcpy(sc->sc_cur_rateset, rateset_auto_11g,
 796                             sizeof(sc->sc_cur_rateset));
 797         } else {
 798                 /* set a fixed rate */
 799                 memset(sc->sc_cur_rateset, rateset_fix_11bg[tp->ucastrate],
 800                     sizeof(sc->sc_cur_rateset));
 801         }
 802 }
 803
 804 static void
 805 upgt_set_multi(void *arg)
 806 {
 807         struct upgt_softc *sc = arg;
 808         struct ifnet *ifp = sc->sc_ifp;
 809
 810         if (!(ifp->if_flags & IFF_UP))
 811                 return;
 812
 813         /*
 814          * XXX don't know how to set a device.  Lack of docs.  Just try to set
 815          * IFF_ALLMULTI flag here.
 816          */
 817         ifp->if_flags |= IFF_ALLMULTI;
 818 }
 819
 820 static void
 821 upgt_start(struct ifnet *ifp)
 822 {
 823         struct upgt_softc *sc = ifp->if_softc;
 824         struct upgt_data *data_tx;
 825         struct ieee80211_node *ni;
 826         struct mbuf *m;
 827
 828         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
 829                 return;
 830
 831         UPGT_LOCK(sc);
 832         for (;;) {
 833                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
 834                 if (m == NULL)
 835                         break;
 836
 837                 data_tx = upgt_gettxbuf(sc);
 838                 if (data_tx == NULL) {
 839                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
 840                         break;
 841                 }
 842
 843                 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
 844                 m->m_pkthdr.rcvif = NULL;
 845
 846                 if (upgt_tx_start(sc, m, ni, data_tx) != 0) {
 847                         STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, data_tx, next);
 848                         UPGT_STAT_INC(sc, st_tx_inactive);
 849                         ieee80211_free_node(ni);
 850                         ifp->if_oerrors++;
 851                         continue;
 852                 }
 853                 sc->sc_tx_timer = 5;
 854         }
 855         UPGT_UNLOCK(sc);
 856 }
 857
 858 static int
 859 upgt_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
 860         const struct ieee80211_bpf_params *params)
 861 {
 862         struct ieee80211com *ic = ni->ni_ic;
 863         struct ifnet *ifp = ic->ic_ifp;
 864         struct upgt_softc *sc = ifp->if_softc;
 865         struct upgt_data *data_tx = NULL;
 866
 867         /* prevent management frames from being sent if we're not ready */
 868         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 869                 m_freem(m);
 870                 ieee80211_free_node(ni);
 871                 return ENETDOWN;
 872         }
 873
 874         UPGT_LOCK(sc);
 875         data_tx = upgt_gettxbuf(sc);
 876         if (data_tx == NULL) {
 877                 ieee80211_free_node(ni);
 878                 m_freem(m);
 879                 UPGT_UNLOCK(sc);
 880                 return (ENOBUFS);
 881         }
 882
 883         if (upgt_tx_start(sc, m, ni, data_tx) != 0) {
 884                 STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, data_tx, next);
 885                 UPGT_STAT_INC(sc, st_tx_inactive);
 886                 ieee80211_free_node(ni);
 887                 ifp->if_oerrors++;
 888                 UPGT_UNLOCK(sc);
 889                 return (EIO);
 890         }
 891         UPGT_UNLOCK(sc);
 892
 893         sc->sc_tx_timer = 5;
 894         return (0);
 895 }
 896
 897 static void
 898 upgt_watchdog(void *arg)
 899 {
 900         struct upgt_softc *sc = arg;
 901         struct ifnet *ifp = sc->sc_ifp;
 902
 903         if (sc->sc_tx_timer > 0) {
 904                 if (--sc->sc_tx_timer == 0) {
 905                         device_printf(sc->sc_dev, "watchdog timeout\n");
 906                         /* upgt_init(ifp); XXX needs a process context ? */
 907                         ifp->if_oerrors++;
 908                         return;
 909                 }
 910                 callout_reset(&sc->sc_watchdog_ch, hz, upgt_watchdog, sc);
 911         }
 912 }
 913
 914 static uint32_t
 915 upgt_mem_alloc(struct upgt_softc *sc)
 916 {
 917         int i;
 918
 919         for (i = 0; i < sc->sc_memory.pages; i++) {
 920                 if (sc->sc_memory.page[i].used == 0) {
 921                         sc->sc_memory.page[i].used = 1;
 922                         return (sc->sc_memory.page[i].addr);
 923                 }
 924         }
 925
 926         return (0);
 927 }
 928
 929 static void
 930 upgt_scan_start(struct ieee80211com *ic)
 931 {
 932         /* do nothing.  */
 933 }
 934
 935 static void
 936 upgt_scan_end(struct ieee80211com *ic)
 937 {
 938         /* do nothing.  */
 939 }
 940
 941 static void
 942 upgt_set_channel(struct ieee80211com *ic)
 943 {
 944         struct upgt_softc *sc = ic->ic_ifp->if_softc;
 945
 946         UPGT_LOCK(sc);
 947         upgt_set_chan(sc, ic->ic_curchan);
 948         UPGT_UNLOCK(sc);
 949 }
 950
 951 static void
 952 upgt_set_chan(struct upgt_softc *sc, struct ieee80211_channel *c)
 953 {
 954         struct ifnet *ifp = sc->sc_ifp;
 955         struct ieee80211com *ic = ifp->if_l2com;
 956         struct upgt_data *data_cmd;
 957         struct upgt_lmac_mem *mem;
 958         struct upgt_lmac_channel *chan;
 959         int channel;
 960
 961         UPGT_ASSERT_LOCKED(sc);
 962
 963         channel = ieee80211_chan2ieee(ic, c);
 964         if (channel == 0 || channel == IEEE80211_CHAN_ANY) {
 965                 /* XXX should NEVER happen */
 966                 device_printf(sc->sc_dev,
 967                     "%s: invalid channel %x\n", __func__, channel);
 968                 return;
 969         }
 970
 971         DPRINTF(sc, UPGT_DEBUG_STATE, "%s: channel %d\n", __func__, channel);
 972
 973         data_cmd = upgt_getbuf(sc);
 974         if (data_cmd == NULL) {
 975                 device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
 976                 return;
 977         }
 978         /*
 979          * Transmit the URB containing the CMD data.
 980          */
 981         memset(data_cmd->buf, 0, MCLBYTES);
 982
 983         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 984         mem->addr = htole32(sc->sc_memaddr_frame_start +
 985             UPGT_MEMSIZE_FRAME_HEAD);
 986
 987         chan = (struct upgt_lmac_channel *)(mem + 1);
 988
 989         chan->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 990         chan->header1.type = UPGT_H1_TYPE_CTRL;
 991         chan->header1.len = htole16(
 992             sizeof(struct upgt_lmac_channel) - sizeof(struct upgt_lmac_header));
 993
 994         chan->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 995         chan->header2.type = htole16(UPGT_H2_TYPE_CHANNEL);
 996         chan->header2.flags = 0;
 997
 998         chan->unknown1 = htole16(UPGT_CHANNEL_UNKNOWN1);
 999         chan->unknown2 = htole16(UPGT_CHANNEL_UNKNOWN2);
1000         chan->freq6 = sc->sc_eeprom_freq6[channel];
1001         chan->settings = sc->sc_eeprom_freq6_settings;
1002         chan->unknown3 = UPGT_CHANNEL_UNKNOWN3;
1003
1004         memcpy(chan->freq3_1, &sc->sc_eeprom_freq3[channel].data,
1005             sizeof(chan->freq3_1));
1006         memcpy(chan->freq4, &sc->sc_eeprom_freq4[channel],
1007             sizeof(sc->sc_eeprom_freq4[channel]));
1008         memcpy(chan->freq3_2, &sc->sc_eeprom_freq3[channel].data,
1009             sizeof(chan->freq3_2));
1010
1011         data_cmd->buflen = sizeof(*mem) + sizeof(*chan);
1012
1013         mem->chksum = upgt_chksum_le((uint32_t *)chan,
1014             data_cmd->buflen - sizeof(*mem));
1015
1016         upgt_bulk_tx(sc, data_cmd);
1017 }
1018
1019 static struct ieee80211vap *
1020 upgt_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
1021     enum ieee80211_opmode opmode, int flags,
1022     const uint8_t bssid[IEEE80211_ADDR_LEN],
1023     const uint8_t mac[IEEE80211_ADDR_LEN])
1024 {
1025         struct upgt_vap *uvp;
1026         struct ieee80211vap *vap;
1027
1028         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
1029                 return NULL;
1030         uvp = (struct upgt_vap *) malloc(sizeof(struct upgt_vap),
1031             M_80211_VAP, M_NOWAIT | M_ZERO);
1032         if (uvp == NULL)
1033                 return NULL;
1034         vap = &uvp->vap;
1035         /* enable s/w bmiss handling for sta mode */
1036         ieee80211_vap_setup(ic, vap, name, unit, opmode,
1037             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
1038
1039         /* override state transition machine */
1040         uvp->newstate = vap->iv_newstate;
1041         vap->iv_newstate = upgt_newstate;
1042
1043         /* setup device rates */
1044         upgt_setup_rates(vap, ic);
1045
1046         /* complete setup */
1047         ieee80211_vap_attach(vap, ieee80211_media_change,
1048             ieee80211_media_status);
1049         ic->ic_opmode = opmode;
1050         return vap;
1051 }
1052
1053 static int
1054 upgt_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1055 {
1056         struct upgt_vap *uvp = UPGT_VAP(vap);
1057         struct ieee80211com *ic = vap->iv_ic;
1058         struct upgt_softc *sc = ic->ic_ifp->if_softc;
1059
1060         /* do it in a process context */
1061         sc->sc_state = nstate;
1062
1063         IEEE80211_UNLOCK(ic);
1064         UPGT_LOCK(sc);
1065         callout_stop(&sc->sc_led_ch);
1066         callout_stop(&sc->sc_watchdog_ch);
1067
1068         switch (nstate) {
1069         case IEEE80211_S_INIT:
1070                 /* do not accept any frames if the device is down */
1071                 (void)upgt_set_macfilter(sc, sc->sc_state);
1072                 upgt_set_led(sc, UPGT_LED_OFF);
1073                 break;
1074         case IEEE80211_S_SCAN:
1075                 upgt_set_chan(sc, ic->ic_curchan);
1076                 break;
1077         case IEEE80211_S_AUTH:
1078                 upgt_set_chan(sc, ic->ic_curchan);
1079                 break;
1080         case IEEE80211_S_ASSOC:
1081                 break;
1082         case IEEE80211_S_RUN:
1083                 upgt_set_macfilter(sc, sc->sc_state);
1084                 upgt_set_led(sc, UPGT_LED_ON);
1085                 break;
1086         default:
1087                 break;
1088         }
1089         UPGT_UNLOCK(sc);
1090         IEEE80211_LOCK(ic);
1091         return (uvp->newstate(vap, nstate, arg));
1092 }
1093
1094 static void
1095 upgt_vap_delete(struct ieee80211vap *vap)
1096 {
1097         struct upgt_vap *uvp = UPGT_VAP(vap);
1098
1099         ieee80211_vap_detach(vap);
1100         free(uvp, M_80211_VAP);
1101 }
1102
1103 static void
1104 upgt_update_mcast(struct ifnet *ifp)
1105 {
1106         struct upgt_softc *sc = ifp->if_softc;
1107
1108         upgt_set_multi(sc);
1109 }
1110
1111 static int
1112 upgt_eeprom_parse(struct upgt_softc *sc)
1113 {
1114         struct upgt_eeprom_header *eeprom_header;
1115         struct upgt_eeprom_option *eeprom_option;
1116         uint16_t option_len;
1117         uint16_t option_type;
1118         uint16_t preamble_len;
1119         int option_end = 0;
1120
1121         /* calculate eeprom options start offset */
1122         eeprom_header = (struct upgt_eeprom_header *)sc->sc_eeprom;
1123         preamble_len = le16toh(eeprom_header->preamble_len);
1124         eeprom_option = (struct upgt_eeprom_option *)(sc->sc_eeprom +
1125             (sizeof(struct upgt_eeprom_header) + preamble_len));
1126
1127         while (!option_end) {
1128                 /* the eeprom option length is stored in words */
1129                 option_len =
1130                     (le16toh(eeprom_option->len) - 1) * sizeof(uint16_t);
1131                 option_type =
1132                     le16toh(eeprom_option->type);
1133
1134                 switch (option_type) {
1135                 case UPGT_EEPROM_TYPE_NAME:
1136                         DPRINTF(sc, UPGT_DEBUG_FW,
1137                             "EEPROM name len=%d\n", option_len);
1138                         break;
1139                 case UPGT_EEPROM_TYPE_SERIAL:
1140                         DPRINTF(sc, UPGT_DEBUG_FW,
1141                             "EEPROM serial len=%d\n", option_len);
1142                         break;
1143                 case UPGT_EEPROM_TYPE_MAC:
1144                         DPRINTF(sc, UPGT_DEBUG_FW,
1145                             "EEPROM mac len=%d\n", option_len);
1146
1147                         IEEE80211_ADDR_COPY(sc->sc_myaddr, eeprom_option->data);
1148                         break;
1149                 case UPGT_EEPROM_TYPE_HWRX:
1150                         DPRINTF(sc, UPGT_DEBUG_FW,
1151                             "EEPROM hwrx len=%d\n", option_len);
1152
1153                         upgt_eeprom_parse_hwrx(sc, eeprom_option->data);
1154                         break;
1155                 case UPGT_EEPROM_TYPE_CHIP:
1156                         DPRINTF(sc, UPGT_DEBUG_FW,
1157                             "EEPROM chip len=%d\n", option_len);
1158                         break;
1159                 case UPGT_EEPROM_TYPE_FREQ3:
1160                         DPRINTF(sc, UPGT_DEBUG_FW,
1161                             "EEPROM freq3 len=%d\n", option_len);
1162
1163                         upgt_eeprom_parse_freq3(sc, eeprom_option->data,
1164                             option_len);
1165                         break;
1166                 case UPGT_EEPROM_TYPE_FREQ4:
1167                         DPRINTF(sc, UPGT_DEBUG_FW,
1168                             "EEPROM freq4 len=%d\n", option_len);
1169
1170                         upgt_eeprom_parse_freq4(sc, eeprom_option->data,
1171                             option_len);
1172                         break;
1173                 case UPGT_EEPROM_TYPE_FREQ5:
1174                         DPRINTF(sc, UPGT_DEBUG_FW,
1175                             "EEPROM freq5 len=%d\n", option_len);
1176                         break;
1177                 case UPGT_EEPROM_TYPE_FREQ6:
1178                         DPRINTF(sc, UPGT_DEBUG_FW,
1179                             "EEPROM freq6 len=%d\n", option_len);
1180
1181                         upgt_eeprom_parse_freq6(sc, eeprom_option->data,
1182                             option_len);
1183                         break;
1184                 case UPGT_EEPROM_TYPE_END:
1185                         DPRINTF(sc, UPGT_DEBUG_FW,
1186                             "EEPROM end len=%d\n", option_len);
1187                         option_end = 1;
1188                         break;
1189                 case UPGT_EEPROM_TYPE_OFF:
1190                         DPRINTF(sc, UPGT_DEBUG_FW,
1191                             "%s: EEPROM off without end option\n", __func__);
1192                         return (EIO);
1193                 default:
1194                         DPRINTF(sc, UPGT_DEBUG_FW,
1195                             "EEPROM unknown type 0x%04x len=%d\n",
1196                             option_type, option_len);
1197                         break;
1198                 }
1199
1200                 /* jump to next EEPROM option */
1201                 eeprom_option = (struct upgt_eeprom_option *)
1202                     (eeprom_option->data + option_len);
1203         }
1204
1205         return (0);
1206 }
1207
1208 static void
1209 upgt_eeprom_parse_freq3(struct upgt_softc *sc, uint8_t *data, int len)
1210 {
1211         struct upgt_eeprom_freq3_header *freq3_header;
1212         struct upgt_lmac_freq3 *freq3;
1213         int i, elements, flags;
1214         unsigned channel;
1215
1216         freq3_header = (struct upgt_eeprom_freq3_header *)data;
1217         freq3 = (struct upgt_lmac_freq3 *)(freq3_header + 1);
1218
1219         flags = freq3_header->flags;
1220         elements = freq3_header->elements;
1221
1222         DPRINTF(sc, UPGT_DEBUG_FW, "flags=0x%02x elements=%d\n",
1223             flags, elements);
1224
1225         for (i = 0; i < elements; i++) {
1226                 channel = ieee80211_mhz2ieee(le16toh(freq3[i].freq), 0);
1227                 if (channel >= IEEE80211_CHAN_MAX)
1228                         continue;
1229
1230                 sc->sc_eeprom_freq3[channel] = freq3[i];
1231
1232                 DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
1233                     le16toh(sc->sc_eeprom_freq3[channel].freq), channel);
1234         }
1235 }
1236
1237 void
1238 upgt_eeprom_parse_freq4(struct upgt_softc *sc, uint8_t *data, int len)
1239 {
1240         struct upgt_eeprom_freq4_header *freq4_header;
1241         struct upgt_eeprom_freq4_1 *freq4_1;
1242         struct upgt_eeprom_freq4_2 *freq4_2;
1243         int i, j, elements, settings, flags;
1244         unsigned channel;
1245
1246         freq4_header = (struct upgt_eeprom_freq4_header *)data;
1247         freq4_1 = (struct upgt_eeprom_freq4_1 *)(freq4_header + 1);
1248         flags = freq4_header->flags;
1249         elements = freq4_header->elements;
1250         settings = freq4_header->settings;
1251
1252         /* we need this value later */
1253         sc->sc_eeprom_freq6_settings = freq4_header->settings;
1254
1255         DPRINTF(sc, UPGT_DEBUG_FW, "flags=0x%02x elements=%d settings=%d\n",
1256             flags, elements, settings);
1257
1258         for (i = 0; i < elements; i++) {
1259                 channel = ieee80211_mhz2ieee(le16toh(freq4_1[i].freq), 0);
1260                 if (channel >= IEEE80211_CHAN_MAX)
1261                         continue;
1262
1263                 freq4_2 = (struct upgt_eeprom_freq4_2 *)freq4_1[i].data;
1264                 for (j = 0; j < settings; j++) {
1265                         sc->sc_eeprom_freq4[channel][j].cmd = freq4_2[j];
1266                         sc->sc_eeprom_freq4[channel][j].pad = 0;
1267                 }
1268
1269                 DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
1270                     le16toh(freq4_1[i].freq), channel);
1271         }
1272 }
1273
1274 void
1275 upgt_eeprom_parse_freq6(struct upgt_softc *sc, uint8_t *data, int len)
1276 {
1277         struct upgt_lmac_freq6 *freq6;
1278         int i, elements;
1279         unsigned channel;
1280
1281         freq6 = (struct upgt_lmac_freq6 *)data;
1282         elements = len / sizeof(struct upgt_lmac_freq6);
1283
1284         DPRINTF(sc, UPGT_DEBUG_FW, "elements=%d\n", elements);
1285
1286         for (i = 0; i < elements; i++) {
1287                 channel = ieee80211_mhz2ieee(le16toh(freq6[i].freq), 0);
1288                 if (channel >= IEEE80211_CHAN_MAX)
1289                         continue;
1290
1291                 sc->sc_eeprom_freq6[channel] = freq6[i];
1292
1293                 DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
1294                     le16toh(sc->sc_eeprom_freq6[channel].freq), channel);
1295         }
1296 }
1297
1298 static void
1299 upgt_eeprom_parse_hwrx(struct upgt_softc *sc, uint8_t *data)
1300 {
1301         struct upgt_eeprom_option_hwrx *option_hwrx;
1302
1303         option_hwrx = (struct upgt_eeprom_option_hwrx *)data;
1304
1305         sc->sc_eeprom_hwrx = option_hwrx->rxfilter - UPGT_EEPROM_RX_CONST;
1306
1307         DPRINTF(sc, UPGT_DEBUG_FW, "hwrx option value=0x%04x\n",
1308             sc->sc_eeprom_hwrx);
1309 }
1310
1311 static int
1312 upgt_eeprom_read(struct upgt_softc *sc)
1313 {
1314         struct upgt_data *data_cmd;
1315         struct upgt_lmac_mem *mem;
1316         struct upgt_lmac_eeprom *eeprom;
1317         int block, error, offset;
1318
1319         UPGT_LOCK(sc);
1320         usb_pause_mtx(&sc->sc_mtx, 100);
1321
1322         offset = 0;
1323         block = UPGT_EEPROM_BLOCK_SIZE;
1324         while (offset < UPGT_EEPROM_SIZE) {
1325                 DPRINTF(sc, UPGT_DEBUG_FW,
1326                     "request EEPROM block (offset=%d, len=%d)\n", offset, block);
1327
1328                 data_cmd = upgt_getbuf(sc);
1329                 if (data_cmd == NULL) {
1330                         UPGT_UNLOCK(sc);
1331                         return (ENOBUFS);
1332                 }
1333
1334                 /*
1335                  * Transmit the URB containing the CMD data.
1336                  */
1337                 memset(data_cmd->buf, 0, MCLBYTES);
1338
1339                 mem = (struct upgt_lmac_mem *)data_cmd->buf;
1340                 mem->addr = htole32(sc->sc_memaddr_frame_start +
1341                     UPGT_MEMSIZE_FRAME_HEAD);
1342
1343                 eeprom = (struct upgt_lmac_eeprom *)(mem + 1);
1344                 eeprom->header1.flags = 0;
1345                 eeprom->header1.type = UPGT_H1_TYPE_CTRL;
1346                 eeprom->header1.len = htole16((
1347                     sizeof(struct upgt_lmac_eeprom) -
1348                     sizeof(struct upgt_lmac_header)) + block);
1349
1350                 eeprom->header2.reqid = htole32(sc->sc_memaddr_frame_start);
1351                 eeprom->header2.type = htole16(UPGT_H2_TYPE_EEPROM);
1352                 eeprom->header2.flags = 0;
1353
1354                 eeprom->offset = htole16(offset);
1355                 eeprom->len = htole16(block);
1356
1357                 data_cmd->buflen = sizeof(*mem) + sizeof(*eeprom) + block;
1358
1359                 mem->chksum = upgt_chksum_le((uint32_t *)eeprom,
1360                     data_cmd->buflen - sizeof(*mem));
1361                 upgt_bulk_tx(sc, data_cmd);
1362
1363                 error = mtx_sleep(sc, &sc->sc_mtx, 0, "eeprom_request", hz);
1364                 if (error != 0) {
1365                         device_printf(sc->sc_dev,
1366                             "timeout while waiting for EEPROM data\n");
1367                         UPGT_UNLOCK(sc);
1368                         return (EIO);
1369                 }
1370
1371                 offset += block;
1372                 if (UPGT_EEPROM_SIZE - offset < block)
1373                         block = UPGT_EEPROM_SIZE - offset;
1374         }
1375
1376         UPGT_UNLOCK(sc);
1377         return (0);
1378 }
1379
1380 /*
1381  * When a rx data came in the function returns a mbuf and a rssi values.
1382  */
1383 static struct mbuf *
1384 upgt_rxeof(struct usb_xfer *xfer, struct upgt_data *data, int *rssi)
1385 {
1386         struct mbuf *m = NULL;
1387         struct upgt_softc *sc = usbd_xfer_softc(xfer);
1388         struct upgt_lmac_header *header;
1389         struct upgt_lmac_eeprom *eeprom;
1390         uint8_t h1_type;
1391         uint16_t h2_type;
1392         int actlen, sumlen;
1393
1394         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
1395
1396         UPGT_ASSERT_LOCKED(sc);
1397
1398         if (actlen < 1)
1399                 return (NULL);
1400
1401         /* Check only at the very beginning.  */
1402         if (!(sc->sc_flags & UPGT_FLAG_FWLOADED) &&
1403             (memcmp(data->buf, "OK", 2) == 0)) {
1404                 sc->sc_flags |= UPGT_FLAG_FWLOADED;
1405                 wakeup_one(sc);
1406                 return (NULL);
1407         }
1408
1409         if (actlen < (int)UPGT_RX_MINSZ)
1410                 return (NULL);
1411
1412         /*
1413          * Check what type of frame came in.
1414          */
1415         header = (struct upgt_lmac_header *)(data->buf + 4);
1416
1417         h1_type = header->header1.type;
1418         h2_type = le16toh(header->header2.type);
1419
1420         if (h1_type == UPGT_H1_TYPE_CTRL && h2_type == UPGT_H2_TYPE_EEPROM) {
1421                 eeprom = (struct upgt_lmac_eeprom *)(data->buf + 4);
1422                 uint16_t eeprom_offset = le16toh(eeprom->offset);
1423                 uint16_t eeprom_len = le16toh(eeprom->len);
1424
1425                 DPRINTF(sc, UPGT_DEBUG_FW,
1426                     "received EEPROM block (offset=%d, len=%d)\n",
1427                     eeprom_offset, eeprom_len);
1428
1429                 memcpy(sc->sc_eeprom + eeprom_offset,
1430                     data->buf + sizeof(struct upgt_lmac_eeprom) + 4,
1431                     eeprom_len);
1432
1433                 /* EEPROM data has arrived in time, wakeup.  */
1434                 wakeup(sc);
1435         } else if (h1_type == UPGT_H1_TYPE_CTRL &&
1436             h2_type == UPGT_H2_TYPE_TX_DONE) {
1437                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: received 802.11 TX done\n",
1438                     __func__);
1439                 upgt_tx_done(sc, data->buf + 4);
1440         } else if (h1_type == UPGT_H1_TYPE_RX_DATA ||
1441             h1_type == UPGT_H1_TYPE_RX_DATA_MGMT) {
1442                 DPRINTF(sc, UPGT_DEBUG_RECV, "%s: received 802.11 RX data\n",
1443                     __func__);
1444                 m = upgt_rx(sc, data->buf + 4, le16toh(header->header1.len),
1445                     rssi);
1446         } else if (h1_type == UPGT_H1_TYPE_CTRL &&
1447             h2_type == UPGT_H2_TYPE_STATS) {
1448                 DPRINTF(sc, UPGT_DEBUG_STAT, "%s: received statistic data\n",
1449                     __func__);
1450                 /* TODO: what could we do with the statistic data? */
1451         } else {
1452                 /* ignore unknown frame types */
1453                 DPRINTF(sc, UPGT_DEBUG_INTR,
1454                     "received unknown frame type 0x%02x\n",
1455                     header->header1.type);
1456         }
1457         return (m);
1458 }
1459
1460 /*
1461  * The firmware awaits a checksum for each frame we send to it.
1462  * The algorithm used therefor is uncommon but somehow similar to CRC32.
1463  */
1464 static uint32_t
1465 upgt_chksum_le(const uint32_t *buf, size_t size)
1466 {
1467         size_t i;
1468         uint32_t crc = 0;
1469
1470         for (i = 0; i < size; i += sizeof(uint32_t)) {
1471                 crc = htole32(crc ^ *buf++);
1472                 crc = htole32((crc >> 5) ^ (crc << 3));
1473         }
1474
1475         return (crc);
1476 }
1477
1478 static struct mbuf *
1479 upgt_rx(struct upgt_softc *sc, uint8_t *data, int pkglen, int *rssi)
1480 {
1481         struct ifnet *ifp = sc->sc_ifp;
1482         struct ieee80211com *ic = ifp->if_l2com;
1483         struct upgt_lmac_rx_desc *rxdesc;
1484         struct mbuf *m;
1485
1486         /*
1487          * don't pass packets to the ieee80211 framework if the driver isn't
1488          * RUNNING.
1489          */
1490         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
1491                 return (NULL);
1492
1493         /* access RX packet descriptor */
1494         rxdesc = (struct upgt_lmac_rx_desc *)data;
1495
1496         /* create mbuf which is suitable for strict alignment archs */
1497         KASSERT((pkglen + ETHER_ALIGN) < MCLBYTES,
1498             ("A current mbuf storage is small (%d)", pkglen + ETHER_ALIGN));
1499         m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1500         if (m == NULL) {
1501                 device_printf(sc->sc_dev, "could not create RX mbuf\n");
1502                 return (NULL);
1503         }
1504         m_adj(m, ETHER_ALIGN);
1505         memcpy(mtod(m, char *), rxdesc->data, pkglen);
1506         /* trim FCS */
1507         m->m_len = m->m_pkthdr.len = pkglen - IEEE80211_CRC_LEN;
1508         m->m_pkthdr.rcvif = ifp;
1509
1510         if (ieee80211_radiotap_active(ic)) {
1511                 struct upgt_rx_radiotap_header *tap = &sc->sc_rxtap;
1512
1513                 tap->wr_flags = 0;
1514                 tap->wr_rate = upgt_rx_rate(sc, rxdesc->rate);
1515                 tap->wr_antsignal = rxdesc->rssi;
1516         }
1517         ifp->if_ipackets++;
1518
1519         DPRINTF(sc, UPGT_DEBUG_RX_PROC, "%s: RX done\n", __func__);
1520         *rssi = rxdesc->rssi;
1521         return (m);
1522 }
1523
1524 static uint8_t
1525 upgt_rx_rate(struct upgt_softc *sc, const int rate)
1526 {
1527         struct ifnet *ifp = sc->sc_ifp;
1528         struct ieee80211com *ic = ifp->if_l2com;
1529         static const uint8_t cck_upgt2rate[4] = { 2, 4, 11, 22 };
1530         static const uint8_t ofdm_upgt2rate[12] =
1531             { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 };
1532
1533         if (ic->ic_curmode == IEEE80211_MODE_11B &&
1534             !(rate < 0 || rate > 3))
1535                 return cck_upgt2rate[rate & 0xf];
1536
1537         if (ic->ic_curmode == IEEE80211_MODE_11G &&
1538             !(rate < 0 || rate > 11))
1539                 return ofdm_upgt2rate[rate & 0xf];
1540
1541         return (0);
1542 }
1543
1544 static void
1545 upgt_tx_done(struct upgt_softc *sc, uint8_t *data)
1546 {
1547         struct ifnet *ifp = sc->sc_ifp;
1548         struct upgt_lmac_tx_done_desc *desc;
1549         int i, freed = 0;
1550
1551         UPGT_ASSERT_LOCKED(sc);
1552
1553         desc = (struct upgt_lmac_tx_done_desc *)data;
1554
1555         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
1556                 struct upgt_data *data_tx = &sc->sc_tx_data[i];
1557
1558                 if (data_tx->addr == le32toh(desc->header2.reqid)) {
1559                         upgt_mem_free(sc, data_tx->addr);
1560                         data_tx->ni = NULL;
1561                         data_tx->addr = 0;
1562                         data_tx->m = NULL;
1563                         data_tx->use = 0;
1564
1565                         DPRINTF(sc, UPGT_DEBUG_TX_PROC,
1566                             "TX done: memaddr=0x%08x, status=0x%04x, rssi=%d, ",
1567                             le32toh(desc->header2.reqid),
1568                             le16toh(desc->status), le16toh(desc->rssi));
1569                         DPRINTF(sc, UPGT_DEBUG_TX_PROC, "seq=%d\n",
1570                             le16toh(desc->seq));
1571
1572                         freed++;
1573                 }
1574         }
1575
1576         if (freed != 0) {
1577                 sc->sc_tx_timer = 0;
1578                 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1579                 UPGT_UNLOCK(sc);
1580                 upgt_start(ifp);
1581                 UPGT_LOCK(sc);
1582         }
1583 }
1584
1585 static void
1586 upgt_mem_free(struct upgt_softc *sc, uint32_t addr)
1587 {
1588         int i;
1589
1590         for (i = 0; i < sc->sc_memory.pages; i++) {
1591                 if (sc->sc_memory.page[i].addr == addr) {
1592                         sc->sc_memory.page[i].used = 0;
1593                         return;
1594                 }
1595         }
1596
1597         device_printf(sc->sc_dev,
1598             "could not free memory address 0x%08x\n", addr);
1599 }
1600
1601 static int
1602 upgt_fw_load(struct upgt_softc *sc)
1603 {
1604         const struct firmware *fw;
1605         struct upgt_data *data_cmd;
1606         struct upgt_fw_x2_header *x2;
1607         char start_fwload_cmd[] = { 0x3c, 0x0d };
1608         int error = 0;
1609         size_t offset;
1610         int bsize;
1611         int n;
1612         uint32_t crc32;
1613
1614         fw = firmware_get(upgt_fwname);
1615         if (fw == NULL) {
1616                 device_printf(sc->sc_dev, "could not read microcode %s\n",
1617                     upgt_fwname);
1618                 return (EIO);
1619         }
1620
1621         UPGT_LOCK(sc);
1622
1623         /* send firmware start load command */
1624         data_cmd = upgt_getbuf(sc);
1625         if (data_cmd == NULL) {
1626                 error = ENOBUFS;
1627                 goto fail;
1628         }
1629         data_cmd->buflen = sizeof(start_fwload_cmd);
1630         memcpy(data_cmd->buf, start_fwload_cmd, data_cmd->buflen);
1631         upgt_bulk_tx(sc, data_cmd);
1632
1633         /* send X2 header */
1634         data_cmd = upgt_getbuf(sc);
1635         if (data_cmd == NULL) {
1636                 error = ENOBUFS;
1637                 goto fail;
1638         }
1639         data_cmd->buflen = sizeof(struct upgt_fw_x2_header);
1640         x2 = (struct upgt_fw_x2_header *)data_cmd->buf;
1641         memcpy(x2->signature, UPGT_X2_SIGNATURE, UPGT_X2_SIGNATURE_SIZE);
1642         x2->startaddr = htole32(UPGT_MEMADDR_FIRMWARE_START);
1643         x2->len = htole32(fw->datasize);
1644         x2->crc = upgt_crc32_le((uint8_t *)data_cmd->buf +
1645             UPGT_X2_SIGNATURE_SIZE,
1646             sizeof(struct upgt_fw_x2_header) - UPGT_X2_SIGNATURE_SIZE -
1647             sizeof(uint32_t));
1648         upgt_bulk_tx(sc, data_cmd);
1649
1650         /* download firmware */
1651         for (offset = 0; offset < fw->datasize; offset += bsize) {
1652                 if (fw->datasize - offset > UPGT_FW_BLOCK_SIZE)
1653                         bsize = UPGT_FW_BLOCK_SIZE;
1654                 else
1655                         bsize = fw->datasize - offset;
1656
1657                 data_cmd = upgt_getbuf(sc);
1658                 if (data_cmd == NULL) {
1659                         error = ENOBUFS;
1660                         goto fail;
1661                 }
1662                 n = upgt_fw_copy((const uint8_t *)fw->data + offset,
1663                     data_cmd->buf, bsize);
1664                 data_cmd->buflen = bsize;
1665                 upgt_bulk_tx(sc, data_cmd);
1666
1667                 DPRINTF(sc, UPGT_DEBUG_FW, "FW offset=%d, read=%d, sent=%d\n",
1668                     offset, n, bsize);
1669                 bsize = n;
1670         }
1671         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware downloaded\n", __func__);
1672
1673         /* load firmware */
1674         data_cmd = upgt_getbuf(sc);
1675         if (data_cmd == NULL) {
1676                 error = ENOBUFS;
1677                 goto fail;
1678         }
1679         crc32 = upgt_crc32_le(fw->data, fw->datasize);
1680         *((uint32_t *)(data_cmd->buf)    ) = crc32;
1681         *((uint8_t  *)(data_cmd->buf) + 4) = 'g';
1682         *((uint8_t  *)(data_cmd->buf) + 5) = '\r';
1683         data_cmd->buflen = 6;
1684         upgt_bulk_tx(sc, data_cmd);
1685
1686         /* waiting 'OK' response.  */
1687         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_RX]);
1688         error = mtx_sleep(sc, &sc->sc_mtx, 0, "upgtfw", 2 * hz);
1689         if (error != 0) {
1690                 device_printf(sc->sc_dev, "firmware load failed\n");
1691                 error = EIO;
1692         }
1693
1694         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware loaded\n", __func__);
1695 fail:
1696         UPGT_UNLOCK(sc);
1697         firmware_put(fw, FIRMWARE_UNLOAD);
1698         return (error);
1699 }
1700
1701 static uint32_t
1702 upgt_crc32_le(const void *buf, size_t size)
1703 {
1704         uint32_t crc;
1705
1706         crc = ether_crc32_le(buf, size);
1707
1708         /* apply final XOR value as common for CRC-32 */
1709         crc = htole32(crc ^ 0xffffffffU);
1710
1711         return (crc);
1712 }
1713
1714 /*
1715  * While copying the version 2 firmware, we need to replace two characters:
1716  *
1717  * 0x7e -> 0x7d 0x5e
1718  * 0x7d -> 0x7d 0x5d
1719  */
1720 static int
1721 upgt_fw_copy(const uint8_t *src, char *dst, int size)
1722 {
1723         int i, j;
1724
1725         for (i = 0, j = 0; i < size && j < size; i++) {
1726                 switch (src[i]) {
1727                 case 0x7e:
1728                         dst[j] = 0x7d;
1729                         j++;
1730                         dst[j] = 0x5e;
1731                         j++;
1732                         break;
1733                 case 0x7d:
1734                         dst[j] = 0x7d;
1735                         j++;
1736                         dst[j] = 0x5d;
1737                         j++;
1738                         break;
1739                 default:
1740                         dst[j] = src[i];
1741                         j++;
1742                         break;
1743                 }
1744         }
1745
1746         return (i);
1747 }
1748
1749 static int
1750 upgt_mem_init(struct upgt_softc *sc)
1751 {
1752         int i;
1753
1754         for (i = 0; i < UPGT_MEMORY_MAX_PAGES; i++) {
1755                 sc->sc_memory.page[i].used = 0;
1756
1757                 if (i == 0) {
1758                         /*
1759                          * The first memory page is always reserved for
1760                          * command data.
1761                          */
1762                         sc->sc_memory.page[i].addr =
1763                             sc->sc_memaddr_frame_start + MCLBYTES;
1764                 } else {
1765                         sc->sc_memory.page[i].addr =
1766                             sc->sc_memory.page[i - 1].addr + MCLBYTES;
1767                 }
1768
1769                 if (sc->sc_memory.page[i].addr + MCLBYTES >=
1770                     sc->sc_memaddr_frame_end)
1771                         break;
1772
1773                 DPRINTF(sc, UPGT_DEBUG_FW, "memory address page %d=0x%08x\n",
1774                     i, sc->sc_memory.page[i].addr);
1775         }
1776
1777         sc->sc_memory.pages = i;
1778
1779         DPRINTF(sc, UPGT_DEBUG_FW, "memory pages=%d\n", sc->sc_memory.pages);
1780         return (0);
1781 }
1782
1783 static int
1784 upgt_fw_verify(struct upgt_softc *sc)
1785 {
1786         const struct firmware *fw;
1787         const struct upgt_fw_bra_option *bra_opt;
1788         const struct upgt_fw_bra_descr *descr;
1789         const uint8_t *p;
1790         const uint32_t *uc;
1791         uint32_t bra_option_type, bra_option_len;
1792         size_t offset;
1793         int bra_end = 0;
1794         int error = 0;
1795
1796         fw = firmware_get(upgt_fwname);
1797         if (fw == NULL) {
1798                 device_printf(sc->sc_dev, "could not read microcode %s\n",
1799                     upgt_fwname);
1800                 return EIO;
1801         }
1802
1803         /*
1804          * Seek to beginning of Boot Record Area (BRA).
1805          */
1806         for (offset = 0; offset < fw->datasize; offset += sizeof(*uc)) {
1807                 uc = (const uint32_t *)((const uint8_t *)fw->data + offset);
1808                 if (*uc == 0)
1809                         break;
1810         }
1811         for (; offset < fw->datasize; offset += sizeof(*uc)) {
1812                 uc = (const uint32_t *)((const uint8_t *)fw->data + offset);
1813                 if (*uc != 0)
1814                         break;
1815         }
1816         if (offset == fw->datasize) {
1817                 device_printf(sc->sc_dev,
1818                     "firmware Boot Record Area not found\n");
1819                 error = EIO;
1820                 goto fail;
1821         }
1822
1823         DPRINTF(sc, UPGT_DEBUG_FW,
1824             "firmware Boot Record Area found at offset %d\n", offset);
1825
1826         /*
1827          * Parse Boot Record Area (BRA) options.
1828          */
1829         while (offset < fw->datasize && bra_end == 0) {
1830                 /* get current BRA option */
1831                 p = (const uint8_t *)fw->data + offset;
1832                 bra_opt = (const struct upgt_fw_bra_option *)p;
1833                 bra_option_type = le32toh(bra_opt->type);
1834                 bra_option_len = le32toh(bra_opt->len) * sizeof(*uc);
1835
1836                 switch (bra_option_type) {
1837                 case UPGT_BRA_TYPE_FW:
1838                         DPRINTF(sc, UPGT_DEBUG_FW, "UPGT_BRA_TYPE_FW len=%d\n",
1839                             bra_option_len);
1840
1841                         if (bra_option_len != UPGT_BRA_FWTYPE_SIZE) {
1842                                 device_printf(sc->sc_dev,
1843                                     "wrong UPGT_BRA_TYPE_FW len\n");
1844                                 error = EIO;
1845                                 goto fail;
1846                         }
1847                         if (memcmp(UPGT_BRA_FWTYPE_LM86, bra_opt->data,
1848                             bra_option_len) == 0) {
1849                                 sc->sc_fw_type = UPGT_FWTYPE_LM86;
1850                                 break;
1851                         }
1852                         if (memcmp(UPGT_BRA_FWTYPE_LM87, bra_opt->data,
1853                             bra_option_len) == 0) {
1854                                 sc->sc_fw_type = UPGT_FWTYPE_LM87;
1855                                 break;
1856                         }
1857                         device_printf(sc->sc_dev,
1858                             "unsupported firmware type\n");
1859                         error = EIO;
1860                         goto fail;
1861                 case UPGT_BRA_TYPE_VERSION:
1862                         DPRINTF(sc, UPGT_DEBUG_FW,
1863                             "UPGT_BRA_TYPE_VERSION len=%d\n", bra_option_len);
1864                         break;
1865                 case UPGT_BRA_TYPE_DEPIF:
1866                         DPRINTF(sc, UPGT_DEBUG_FW,
1867                             "UPGT_BRA_TYPE_DEPIF len=%d\n", bra_option_len);
1868                         break;
1869                 case UPGT_BRA_TYPE_EXPIF:
1870                         DPRINTF(sc, UPGT_DEBUG_FW,
1871                             "UPGT_BRA_TYPE_EXPIF len=%d\n", bra_option_len);
1872                         break;
1873                 case UPGT_BRA_TYPE_DESCR:
1874                         DPRINTF(sc, UPGT_DEBUG_FW,
1875                             "UPGT_BRA_TYPE_DESCR len=%d\n", bra_option_len);
1876
1877                         descr = (const struct upgt_fw_bra_descr *)bra_opt->data;
1878
1879                         sc->sc_memaddr_frame_start =
1880                             le32toh(descr->memaddr_space_start);
1881                         sc->sc_memaddr_frame_end =
1882                             le32toh(descr->memaddr_space_end);
1883
1884                         DPRINTF(sc, UPGT_DEBUG_FW,
1885                             "memory address space start=0x%08x\n",
1886                             sc->sc_memaddr_frame_start);
1887                         DPRINTF(sc, UPGT_DEBUG_FW,
1888                             "memory address space end=0x%08x\n",
1889                             sc->sc_memaddr_frame_end);
1890                         break;
1891                 case UPGT_BRA_TYPE_END:
1892                         DPRINTF(sc, UPGT_DEBUG_FW, "UPGT_BRA_TYPE_END len=%d\n",
1893                             bra_option_len);
1894                         bra_end = 1;
1895                         break;
1896                 default:
1897                         DPRINTF(sc, UPGT_DEBUG_FW, "unknown BRA option len=%d\n",
1898                             bra_option_len);
1899                         error = EIO;
1900                         goto fail;
1901                 }
1902
1903                 /* jump to next BRA option */
1904                 offset += sizeof(struct upgt_fw_bra_option) + bra_option_len;
1905         }
1906
1907         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware verified", __func__);
1908 fail:
1909         firmware_put(fw, FIRMWARE_UNLOAD);
1910         return (error);
1911 }
1912
1913 static void
1914 upgt_bulk_tx(struct upgt_softc *sc, struct upgt_data *data)
1915 {
1916
1917         UPGT_ASSERT_LOCKED(sc);
1918
1919         STAILQ_INSERT_TAIL(&sc->sc_tx_pending, data, next);
1920         UPGT_STAT_INC(sc, st_tx_pending);
1921         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_TX]);
1922 }
1923
1924 static int
1925 upgt_device_reset(struct upgt_softc *sc)
1926 {
1927         struct upgt_data *data;
1928         char init_cmd[] = { 0x7e, 0x7e, 0x7e, 0x7e };
1929
1930         UPGT_LOCK(sc);
1931
1932         data = upgt_getbuf(sc);
1933         if (data == NULL) {
1934                 UPGT_UNLOCK(sc);
1935                 return (ENOBUFS);
1936         }
1937         memcpy(data->buf, init_cmd, sizeof(init_cmd));
1938         data->buflen = sizeof(init_cmd);
1939         upgt_bulk_tx(sc, data);
1940         usb_pause_mtx(&sc->sc_mtx, 100);
1941
1942         UPGT_UNLOCK(sc);
1943         DPRINTF(sc, UPGT_DEBUG_FW, "%s: device initialized\n", __func__);
1944         return (0);
1945 }
1946
1947 static int
1948 upgt_alloc_tx(struct upgt_softc *sc)
1949 {
1950         int i;
1951
1952         STAILQ_INIT(&sc->sc_tx_active);
1953         STAILQ_INIT(&sc->sc_tx_inactive);
1954         STAILQ_INIT(&sc->sc_tx_pending);
1955
1956         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
1957                 struct upgt_data *data = &sc->sc_tx_data[i];
1958                 data->buf = ((uint8_t *)sc->sc_tx_dma_buf) + (i * MCLBYTES);
1959                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
1960                 UPGT_STAT_INC(sc, st_tx_inactive);
1961         }
1962
1963         return (0);
1964 }
1965
1966 static int
1967 upgt_alloc_rx(struct upgt_softc *sc)
1968 {
1969         int i;
1970
1971         STAILQ_INIT(&sc->sc_rx_active);
1972         STAILQ_INIT(&sc->sc_rx_inactive);
1973
1974         for (i = 0; i < UPGT_RX_MAXCOUNT; i++) {
1975                 struct upgt_data *data = &sc->sc_rx_data[i];
1976                 data->buf = ((uint8_t *)sc->sc_rx_dma_buf) + (i * MCLBYTES);
1977                 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
1978         }
1979
1980         return (0);
1981 }
1982
1983 static int
1984 upgt_detach(device_t dev)
1985 {
1986         struct upgt_softc *sc = device_get_softc(dev);
1987         struct ifnet *ifp = sc->sc_ifp;
1988         struct ieee80211com *ic = ifp->if_l2com;
1989
1990         if (!device_is_attached(dev))
1991                 return 0;
1992
1993         upgt_stop(sc);
1994
1995         callout_drain(&sc->sc_led_ch);
1996         callout_drain(&sc->sc_watchdog_ch);
1997
1998         ieee80211_ifdetach(ic);
1999
2000         usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
2001
2002         upgt_free_rx(sc);
2003         upgt_free_tx(sc);
2004
2005         if_free(ifp);
2006         mtx_destroy(&sc->sc_mtx);
2007
2008         return (0);
2009 }
2010
2011 static void
2012 upgt_free_rx(struct upgt_softc *sc)
2013 {
2014         int i;
2015
2016         for (i = 0; i < UPGT_RX_MAXCOUNT; i++) {
2017                 struct upgt_data *data = &sc->sc_rx_data[i];
2018
2019                 data->buf = NULL;
2020                 data->ni = NULL;
2021         }
2022 }
2023
2024 static void
2025 upgt_free_tx(struct upgt_softc *sc)
2026 {
2027         int i;
2028
2029         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
2030                 struct upgt_data *data = &sc->sc_tx_data[i];
2031
2032                 data->buf = NULL;
2033                 data->ni = NULL;
2034         }
2035 }
2036
2037 static void
2038 upgt_abort_xfers_locked(struct upgt_softc *sc)
2039 {
2040         int i;
2041
2042         UPGT_ASSERT_LOCKED(sc);
2043         /* abort any pending transfers */
2044         for (i = 0; i < UPGT_N_XFERS; i++)
2045                 usbd_transfer_stop(sc->sc_xfer[i]);
2046 }
2047
2048 static void
2049 upgt_abort_xfers(struct upgt_softc *sc)
2050 {
2051
2052         UPGT_LOCK(sc);
2053         upgt_abort_xfers_locked(sc);
2054         UPGT_UNLOCK(sc);
2055 }
2056
2057 #define UPGT_SYSCTL_STAT_ADD32(c, h, n, p, d)   \
2058             SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
2059
2060 static void
2061 upgt_sysctl_node(struct upgt_softc *sc)
2062 {
2063         struct sysctl_ctx_list *ctx;
2064         struct sysctl_oid_list *child;
2065         struct sysctl_oid *tree;
2066         struct upgt_stat *stats;
2067
2068         stats = &sc->sc_stat;
2069         ctx = device_get_sysctl_ctx(sc->sc_dev);
2070         child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->sc_dev));
2071
2072         tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
2073             NULL, "UPGT statistics");
2074         child = SYSCTL_CHILDREN(tree);
2075         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_active",
2076             &stats->st_tx_active, "Active numbers in TX queue");
2077         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_inactive",
2078             &stats->st_tx_inactive, "Inactive numbers in TX queue");
2079         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_pending",
2080             &stats->st_tx_pending, "Pending numbers in TX queue");
2081 }
2082
2083 #undef UPGT_SYSCTL_STAT_ADD32
2084
2085 static struct upgt_data *
2086 _upgt_getbuf(struct upgt_softc *sc)
2087 {
2088         struct upgt_data *bf;
2089
2090         bf = STAILQ_FIRST(&sc->sc_tx_inactive);
2091         if (bf != NULL) {
2092                 STAILQ_REMOVE_HEAD(&sc->sc_tx_inactive, next);
2093                 UPGT_STAT_DEC(sc, st_tx_inactive);
2094         } else
2095                 bf = NULL;
2096         if (bf == NULL)
2097                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: %s\n", __func__,
2098                     "out of xmit buffers");
2099         return (bf);
2100 }
2101
2102 static struct upgt_data *
2103 upgt_getbuf(struct upgt_softc *sc)
2104 {
2105         struct upgt_data *bf;
2106
2107         UPGT_ASSERT_LOCKED(sc);
2108
2109         bf = _upgt_getbuf(sc);
2110         if (bf == NULL) {
2111                 struct ifnet *ifp = sc->sc_ifp;
2112
2113                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: stop queue\n", __func__);
2114                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2115         }
2116
2117         return (bf);
2118 }
2119
2120 static struct upgt_data *
2121 upgt_gettxbuf(struct upgt_softc *sc)
2122 {
2123         struct upgt_data *bf;
2124
2125         UPGT_ASSERT_LOCKED(sc);
2126
2127         bf = upgt_getbuf(sc);
2128         if (bf == NULL)
2129                 return (NULL);
2130
2131         bf->addr = upgt_mem_alloc(sc);
2132         if (bf->addr == 0) {
2133                 struct ifnet *ifp = sc->sc_ifp;
2134
2135                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: no free prism memory!\n",
2136                     __func__);
2137                 STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, bf, next);
2138                 UPGT_STAT_INC(sc, st_tx_inactive);
2139                 if (!(ifp->if_drv_flags & IFF_DRV_OACTIVE))
2140                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2141                 return (NULL);
2142         }
2143         return (bf);
2144 }
2145
2146 static int
2147 upgt_tx_start(struct upgt_softc *sc, struct mbuf *m, struct ieee80211_node *ni,
2148     struct upgt_data *data)
2149 {
2150         struct ieee80211vap *vap = ni->ni_vap;
2151         int error = 0, len;
2152         struct ieee80211_frame *wh;
2153         struct ieee80211_key *k;
2154         struct ifnet *ifp = sc->sc_ifp;
2155         struct upgt_lmac_mem *mem;
2156         struct upgt_lmac_tx_desc *txdesc;
2157
2158         UPGT_ASSERT_LOCKED(sc);
2159
2160         upgt_set_led(sc, UPGT_LED_BLINK);
2161
2162         /*
2163          * Software crypto.
2164          */
2165         wh = mtod(m, struct ieee80211_frame *);
2166         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
2167                 k = ieee80211_crypto_encap(ni, m);
2168                 if (k == NULL) {
2169                         device_printf(sc->sc_dev,
2170                             "ieee80211_crypto_encap returns NULL.\n");
2171                         error = EIO;
2172                         goto done;
2173                 }
2174
2175                 /* in case packet header moved, reset pointer */
2176                 wh = mtod(m, struct ieee80211_frame *);
2177         }
2178
2179         /* Transmit the URB containing the TX data.  */
2180         memset(data->buf, 0, MCLBYTES);
2181         mem = (struct upgt_lmac_mem *)data->buf;
2182         mem->addr = htole32(data->addr);
2183         txdesc = (struct upgt_lmac_tx_desc *)(mem + 1);
2184
2185         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
2186             IEEE80211_FC0_TYPE_MGT) {
2187                 /* mgmt frames  */
2188                 txdesc->header1.flags = UPGT_H1_FLAGS_TX_MGMT;
2189                 /* always send mgmt frames at lowest rate (DS1) */
2190                 memset(txdesc->rates, 0x10, sizeof(txdesc->rates));
2191         } else {
2192                 /* data frames  */
2193                 txdesc->header1.flags = UPGT_H1_FLAGS_TX_DATA;
2194                 memcpy(txdesc->rates, sc->sc_cur_rateset, sizeof(txdesc->rates));
2195         }
2196         txdesc->header1.type = UPGT_H1_TYPE_TX_DATA;
2197         txdesc->header1.len = htole16(m->m_pkthdr.len);
2198         txdesc->header2.reqid = htole32(data->addr);
2199         txdesc->header2.type = htole16(UPGT_H2_TYPE_TX_ACK_YES);
2200         txdesc->header2.flags = htole16(UPGT_H2_FLAGS_TX_ACK_YES);
2201         txdesc->type = htole32(UPGT_TX_DESC_TYPE_DATA);
2202         txdesc->pad3[0] = UPGT_TX_DESC_PAD3_SIZE;
2203
2204         if (ieee80211_radiotap_active_vap(vap)) {
2205                 struct upgt_tx_radiotap_header *tap = &sc->sc_txtap;
2206
2207                 tap->wt_flags = 0;
2208                 tap->wt_rate = 0;       /* XXX where to get from? */
2209
2210                 ieee80211_radiotap_tx(vap, m);
2211         }
2212
2213         /* copy frame below our TX descriptor header */
2214         m_copydata(m, 0, m->m_pkthdr.len,
2215             data->buf + (sizeof(*mem) + sizeof(*txdesc)));
2216         /* calculate frame size */
2217         len = sizeof(*mem) + sizeof(*txdesc) + m->m_pkthdr.len;
2218         /* we need to align the frame to a 4 byte boundary */
2219         len = (len + 3) & ~3;
2220         /* calculate frame checksum */
2221         mem->chksum = upgt_chksum_le((uint32_t *)txdesc, len - sizeof(*mem));
2222         data->ni = ni;
2223         data->m = m;
2224         data->buflen = len;
2225
2226         DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: TX start data sending (%d bytes)\n",
2227             __func__, len);
2228         KASSERT(len <= MCLBYTES, ("mbuf is small for saving data"));
2229
2230         upgt_bulk_tx(sc, data);
2231 done:
2232         /*
2233          * If we don't regulary read the device statistics, the RX queue
2234          * will stall.  It's strange, but it works, so we keep reading
2235          * the statistics here.  *shrug*
2236          */
2237         if (!(ifp->if_opackets % UPGT_TX_STAT_INTERVAL))
2238                 upgt_get_stats(sc);
2239
2240         return (error);
2241 }
2242
2243 static void
2244 upgt_bulk_rx_callback(struct usb_xfer *xfer, usb_error_t error)
2245 {
2246         struct upgt_softc *sc = usbd_xfer_softc(xfer);
2247         struct ifnet *ifp = sc->sc_ifp;
2248         struct ieee80211com *ic = ifp->if_l2com;
2249         struct ieee80211_frame *wh;
2250         struct ieee80211_node *ni;
2251         struct mbuf *m = NULL;
2252         struct upgt_data *data;
2253         int8_t nf;
2254         int rssi = -1;
2255
2256         UPGT_ASSERT_LOCKED(sc);
2257
2258         switch (USB_GET_STATE(xfer)) {
2259         case USB_ST_TRANSFERRED:
2260                 data = STAILQ_FIRST(&sc->sc_rx_active);
2261                 if (data == NULL)
2262                         goto setup;
2263                 STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2264                 m = upgt_rxeof(xfer, data, &rssi);
2265                 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2266                 /* FALLTHROUGH */
2267         case USB_ST_SETUP:
2268 setup:
2269                 data = STAILQ_FIRST(&sc->sc_rx_inactive);
2270                 if (data == NULL)
2271                         return;
2272                 STAILQ_REMOVE_HEAD(&sc->sc_rx_inactive, next);
2273                 STAILQ_INSERT_TAIL(&sc->sc_rx_active, data, next);
2274                 usbd_xfer_set_frame_data(xfer, 0, data->buf, MCLBYTES);
2275                 usbd_transfer_submit(xfer);
2276
2277                 /*
2278                  * To avoid LOR we should unlock our private mutex here to call
2279                  * ieee80211_input() because here is at the end of a USB
2280                  * callback and safe to unlock.
2281                  */
2282                 UPGT_UNLOCK(sc);
2283                 if (m != NULL) {
2284                         wh = mtod(m, struct ieee80211_frame *);
2285                         ni = ieee80211_find_rxnode(ic,
2286                             (struct ieee80211_frame_min *)wh);
2287                         nf = -95;       /* XXX */
2288                         if (ni != NULL) {
2289                                 (void) ieee80211_input(ni, m, rssi, nf);
2290                                 /* node is no longer needed */
2291                                 ieee80211_free_node(ni);
2292                         } else
2293                                 (void) ieee80211_input_all(ic, m, rssi, nf);
2294                         m = NULL;
2295                 }
2296                 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
2297                     !IFQ_IS_EMPTY(&ifp->if_snd))
2298                         upgt_start(ifp);
2299                 UPGT_LOCK(sc);
2300                 break;
2301         default:
2302                 /* needs it to the inactive queue due to a error.  */
2303                 data = STAILQ_FIRST(&sc->sc_rx_active);
2304                 if (data != NULL) {
2305                         STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2306                         STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2307                 }
2308                 if (error != USB_ERR_CANCELLED) {
2309                         usbd_xfer_set_stall(xfer);
2310                         ifp->if_ierrors++;
2311                         goto setup;
2312                 }
2313                 break;
2314         }
2315 }
2316
2317 static void
2318 upgt_bulk_tx_callback(struct usb_xfer *xfer, usb_error_t error)
2319 {
2320         struct upgt_softc *sc = usbd_xfer_softc(xfer);
2321         struct ifnet *ifp = sc->sc_ifp;
2322         struct upgt_data *data;
2323
2324         UPGT_ASSERT_LOCKED(sc);
2325         switch (USB_GET_STATE(xfer)) {
2326         case USB_ST_TRANSFERRED:
2327                 data = STAILQ_FIRST(&sc->sc_tx_active);
2328                 if (data == NULL)
2329                         goto setup;
2330                 STAILQ_REMOVE_HEAD(&sc->sc_tx_active, next);
2331                 UPGT_STAT_DEC(sc, st_tx_active);
2332                 upgt_txeof(xfer, data);
2333                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
2334                 UPGT_STAT_INC(sc, st_tx_inactive);
2335                 /* FALLTHROUGH */
2336         case USB_ST_SETUP:
2337 setup:
2338                 data = STAILQ_FIRST(&sc->sc_tx_pending);
2339                 if (data == NULL) {
2340                         DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: empty pending queue\n",
2341                             __func__);
2342                         return;
2343                 }
2344                 STAILQ_REMOVE_HEAD(&sc->sc_tx_pending, next);
2345                 UPGT_STAT_DEC(sc, st_tx_pending);
2346                 STAILQ_INSERT_TAIL(&sc->sc_tx_active, data, next);
2347                 UPGT_STAT_INC(sc, st_tx_active);
2348
2349                 usbd_xfer_set_frame_data(xfer, 0, data->buf, data->buflen);
2350                 usbd_transfer_submit(xfer);
2351                 UPGT_UNLOCK(sc);
2352                 upgt_start(ifp);
2353                 UPGT_LOCK(sc);
2354                 break;
2355         default:
2356                 data = STAILQ_FIRST(&sc->sc_tx_active);
2357                 if (data == NULL)
2358                         goto setup;
2359                 if (data->ni != NULL) {
2360                         ieee80211_free_node(data->ni);
2361                         data->ni = NULL;
2362                         ifp->if_oerrors++;
2363                 }
2364                 if (error != USB_ERR_CANCELLED) {
2365                         usbd_xfer_set_stall(xfer);
2366                         goto setup;
2367                 }
2368                 break;
2369         }
2370 }
2371
2372 static device_method_t upgt_methods[] = {
2373         /* Device interface */
2374         DEVMETHOD(device_probe, upgt_match),
2375         DEVMETHOD(device_attach, upgt_attach),
2376         DEVMETHOD(device_detach, upgt_detach),
2377         DEVMETHOD_END
2378 };
2379
2380 static driver_t upgt_driver = {
2381         .name = "upgt",
2382         .methods = upgt_methods,
2383         .size = sizeof(struct upgt_softc)
2384 };
2385
2386 static devclass_t upgt_devclass;
2387
2388 DRIVER_MODULE(if_upgt, uhub, upgt_driver, upgt_devclass, NULL, 0);
2389 MODULE_VERSION(if_upgt, 1);
2390 MODULE_DEPEND(if_upgt, usb, 1, 1, 1);
2391 MODULE_DEPEND(if_upgt, wlan, 1, 1, 1);
2392 MODULE_DEPEND(if_upgt, upgtfw_fw, 1, 1, 1);