sys/bus/u4b/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, &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 ieee80211com *);
 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,       WG111V1_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,
 205                 .flags = {
 206                         .ext_buffer = 1,
 207                         .force_short_xfer = 1,
 208                         .pipe_bof = 1
 209                 },
 210                 .callback = upgt_bulk_tx_callback,
 211                 .timeout = UPGT_USB_TIMEOUT,    /* ms */
 212         },
 213         [UPGT_BULK_RX] = {
 214                 .type = UE_BULK,
 215                 .endpoint = UE_ADDR_ANY,
 216                 .direction = UE_DIR_IN,
 217                 .bufsize = MCLBYTES,
 218                 .flags = {
 219                         .ext_buffer = 1,
 220                         .pipe_bof = 1,
 221                         .short_xfer_ok = 1
 222                 },
 223                 .callback = upgt_bulk_rx_callback,
 224         },
 225 };
 226
 227 static int
 228 upgt_match(device_t dev)
 229 {
 230         struct usb_attach_arg *uaa = device_get_ivars(dev);
 231
 232         if (uaa->usb_mode != USB_MODE_HOST)
 233                 return (ENXIO);
 234         if (uaa->info.bConfigIndex != UPGT_CONFIG_INDEX)
 235                 return (ENXIO);
 236         if (uaa->info.bIfaceIndex != UPGT_IFACE_INDEX)
 237                 return (ENXIO);
 238
 239         return (usbd_lookup_id_by_uaa(upgt_devs, sizeof(upgt_devs), uaa));
 240 }
 241
 242 static int
 243 upgt_attach(device_t dev)
 244 {
 245         int error;
 246         struct ieee80211com *ic;
 247         struct ifnet *ifp;
 248         struct upgt_softc *sc = device_get_softc(dev);
 249         struct usb_attach_arg *uaa = device_get_ivars(dev);
 250         uint8_t bands, iface_index = UPGT_IFACE_INDEX;
 251
 252         sc->sc_dev = dev;
 253         sc->sc_udev = uaa->device;
 254 #ifdef UPGT_DEBUG
 255         sc->sc_debug = upgt_debug;
 256 #endif
 257         device_set_usb_desc(dev);
 258
 259         mtx_init(&sc->sc_mtx, device_get_nameunit(sc->sc_dev), MTX_NETWORK_LOCK,
 260             MTX_DEF);
 261         callout_init(&sc->sc_led_ch, 0);
 262         callout_init(&sc->sc_watchdog_ch, 0);
 263
 264         /* Allocate TX and RX xfers.  */
 265         error = upgt_alloc_tx(sc);
 266         if (error)
 267                 goto fail1;
 268         error = upgt_alloc_rx(sc);
 269         if (error)
 270                 goto fail2;
 271
 272         error = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer,
 273             upgt_config, UPGT_N_XFERS, sc, &sc->sc_mtx);
 274         if (error) {
 275                 device_printf(dev, "could not allocate USB transfers, "
 276                     "err=%s\n", usbd_errstr(error));
 277                 goto fail3;
 278         }
 279
 280         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 281         if (ifp == NULL) {
 282                 device_printf(dev, "can not if_alloc()\n");
 283                 goto fail4;
 284         }
 285
 286         /* Initialize the device.  */
 287         error = upgt_device_reset(sc);
 288         if (error)
 289                 goto fail5;
 290         /* Verify the firmware.  */
 291         error = upgt_fw_verify(sc);
 292         if (error)
 293                 goto fail5;
 294         /* Calculate device memory space.  */
 295         if (sc->sc_memaddr_frame_start == 0 || sc->sc_memaddr_frame_end == 0) {
 296                 device_printf(dev,
 297                     "could not find memory space addresses on FW\n");
 298                 error = EIO;
 299                 goto fail5;
 300         }
 301         sc->sc_memaddr_frame_end -= UPGT_MEMSIZE_RX + 1;
 302         sc->sc_memaddr_rx_start = sc->sc_memaddr_frame_end + 1;
 303
 304         DPRINTF(sc, UPGT_DEBUG_FW, "memory address frame start=0x%08x\n",
 305             sc->sc_memaddr_frame_start);
 306         DPRINTF(sc, UPGT_DEBUG_FW, "memory address frame end=0x%08x\n",
 307             sc->sc_memaddr_frame_end);
 308         DPRINTF(sc, UPGT_DEBUG_FW, "memory address rx start=0x%08x\n",
 309             sc->sc_memaddr_rx_start);
 310
 311         upgt_mem_init(sc);
 312
 313         /* Load the firmware.  */
 314         error = upgt_fw_load(sc);
 315         if (error)
 316                 goto fail5;
 317
 318         /* Read the whole EEPROM content and parse it.  */
 319         error = upgt_eeprom_read(sc);
 320         if (error)
 321                 goto fail5;
 322         error = upgt_eeprom_parse(sc);
 323         if (error)
 324                 goto fail5;
 325
 326         /* all works related with the device have done here. */
 327         upgt_abort_xfers(sc);
 328
 329         /* Setup the 802.11 device.  */
 330         ifp->if_softc = sc;
 331         if_initname(ifp, "upgt", device_get_unit(sc->sc_dev));
 332         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 333         ifp->if_init = upgt_init;
 334         ifp->if_ioctl = upgt_ioctl;
 335         ifp->if_start = upgt_start;
 336         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 337         IFQ_SET_READY(&ifp->if_snd);
 338
 339         ic = ifp->if_l2com;
 340         ic->ic_ifp = ifp;
 341         ic->ic_softc = sc;
 342         ic->ic_name = device_get_nameunit(dev);
 343         ic->ic_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
 344         ic->ic_opmode = IEEE80211_M_STA;
 345         /* set device capabilities */
 346         ic->ic_caps =
 347                   IEEE80211_C_STA               /* station mode */
 348                 | IEEE80211_C_MONITOR           /* monitor mode */
 349                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 350                 | IEEE80211_C_SHSLOT            /* short slot time supported */
 351                 | IEEE80211_C_BGSCAN            /* capable of bg scanning */
 352                 | IEEE80211_C_WPA               /* 802.11i */
 353                 ;
 354
 355         bands = 0;
 356         setbit(&bands, IEEE80211_MODE_11B);
 357         setbit(&bands, IEEE80211_MODE_11G);
 358         ieee80211_init_channels(ic, NULL, &bands);
 359
 360         ieee80211_ifattach(ic, sc->sc_myaddr);
 361         ic->ic_raw_xmit = upgt_raw_xmit;
 362         ic->ic_scan_start = upgt_scan_start;
 363         ic->ic_scan_end = upgt_scan_end;
 364         ic->ic_set_channel = upgt_set_channel;
 365         ic->ic_vap_create = upgt_vap_create;
 366         ic->ic_vap_delete = upgt_vap_delete;
 367         ic->ic_update_mcast = upgt_update_mcast;
 368
 369         ieee80211_radiotap_attach(ic,
 370             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 371                 UPGT_TX_RADIOTAP_PRESENT,
 372             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 373                 UPGT_RX_RADIOTAP_PRESENT);
 374
 375         upgt_sysctl_node(sc);
 376
 377         if (bootverbose)
 378                 ieee80211_announce(ic);
 379
 380         return (0);
 381
 382 fail5:  if_free(ifp);
 383 fail4:  usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
 384 fail3:  upgt_free_rx(sc);
 385 fail2:  upgt_free_tx(sc);
 386 fail1:  mtx_destroy(&sc->sc_mtx);
 387
 388         return (error);
 389 }
 390
 391 static void
 392 upgt_txeof(struct usb_xfer *xfer, struct upgt_data *data)
 393 {
 394         struct upgt_softc *sc = usbd_xfer_softc(xfer);
 395         struct ifnet *ifp = sc->sc_ifp;
 396         struct mbuf *m;
 397
 398         UPGT_ASSERT_LOCKED(sc);
 399
 400         /*
 401          * Do any tx complete callback.  Note this must be done before releasing
 402          * the node reference.
 403          */
 404         if (data->m) {
 405                 m = data->m;
 406                 if (m->m_flags & M_TXCB) {
 407                         /* XXX status? */
 408                         ieee80211_process_callback(data->ni, m, 0);
 409                 }
 410                 m_freem(m);
 411                 data->m = NULL;
 412         }
 413         if (data->ni) {
 414                 ieee80211_free_node(data->ni);
 415                 data->ni = NULL;
 416         }
 417         ifp->if_opackets++;
 418 }
 419
 420 static void
 421 upgt_get_stats(struct upgt_softc *sc)
 422 {
 423         struct upgt_data *data_cmd;
 424         struct upgt_lmac_mem *mem;
 425         struct upgt_lmac_stats *stats;
 426
 427         data_cmd = upgt_getbuf(sc);
 428         if (data_cmd == NULL) {
 429                 device_printf(sc->sc_dev, "%s: out of buffer.\n", __func__);
 430                 return;
 431         }
 432
 433         /*
 434          * Transmit the URB containing the CMD data.
 435          */
 436         memset(data_cmd->buf, 0, MCLBYTES);
 437
 438         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 439         mem->addr = htole32(sc->sc_memaddr_frame_start +
 440             UPGT_MEMSIZE_FRAME_HEAD);
 441
 442         stats = (struct upgt_lmac_stats *)(mem + 1);
 443
 444         stats->header1.flags = 0;
 445         stats->header1.type = UPGT_H1_TYPE_CTRL;
 446         stats->header1.len = htole16(
 447             sizeof(struct upgt_lmac_stats) - sizeof(struct upgt_lmac_header));
 448
 449         stats->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 450         stats->header2.type = htole16(UPGT_H2_TYPE_STATS);
 451         stats->header2.flags = 0;
 452
 453         data_cmd->buflen = sizeof(*mem) + sizeof(*stats);
 454
 455         mem->chksum = upgt_chksum_le((uint32_t *)stats,
 456             data_cmd->buflen - sizeof(*mem));
 457
 458         upgt_bulk_tx(sc, data_cmd);
 459 }
 460
 461 static int
 462 upgt_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 463 {
 464         struct upgt_softc *sc = ifp->if_softc;
 465         struct ieee80211com *ic = ifp->if_l2com;
 466         struct ifreq *ifr = (struct ifreq *) data;
 467         int error = 0, startall = 0;
 468
 469         switch (cmd) {
 470         case SIOCSIFFLAGS:
 471                 if (ifp->if_flags & IFF_UP) {
 472                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 473                                 if ((ifp->if_flags ^ sc->sc_if_flags) &
 474                                     (IFF_ALLMULTI | IFF_PROMISC))
 475                                         upgt_set_multi(sc);
 476                         } else {
 477                                 upgt_init(sc);
 478                                 startall = 1;
 479                         }
 480                 } else {
 481                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 482                                 upgt_stop(sc);
 483                 }
 484                 sc->sc_if_flags = ifp->if_flags;
 485                 if (startall)
 486                         ieee80211_start_all(ic);
 487                 break;
 488         case SIOCGIFMEDIA:
 489                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
 490                 break;
 491         case SIOCGIFADDR:
 492                 error = ether_ioctl(ifp, cmd, data);
 493                 break;
 494         default:
 495                 error = EINVAL;
 496                 break;
 497         }
 498         return error;
 499 }
 500
 501 static void
 502 upgt_stop_locked(struct upgt_softc *sc)
 503 {
 504         struct ifnet *ifp = sc->sc_ifp;
 505
 506         UPGT_ASSERT_LOCKED(sc);
 507
 508         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 509                 upgt_set_macfilter(sc, IEEE80211_S_INIT);
 510         upgt_abort_xfers_locked(sc);
 511 }
 512
 513 static void
 514 upgt_stop(struct upgt_softc *sc)
 515 {
 516         struct ifnet *ifp = sc->sc_ifp;
 517
 518         UPGT_LOCK(sc);
 519         upgt_stop_locked(sc);
 520         UPGT_UNLOCK(sc);
 521
 522         /* device down */
 523         sc->sc_tx_timer = 0;
 524         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
 525         sc->sc_flags &= ~UPGT_FLAG_INITDONE;
 526 }
 527
 528 static void
 529 upgt_set_led(struct upgt_softc *sc, int action)
 530 {
 531         struct upgt_data *data_cmd;
 532         struct upgt_lmac_mem *mem;
 533         struct upgt_lmac_led *led;
 534
 535         data_cmd = upgt_getbuf(sc);
 536         if (data_cmd == NULL) {
 537                 device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
 538                 return;
 539         }
 540
 541         /*
 542          * Transmit the URB containing the CMD data.
 543          */
 544         memset(data_cmd->buf, 0, MCLBYTES);
 545
 546         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 547         mem->addr = htole32(sc->sc_memaddr_frame_start +
 548             UPGT_MEMSIZE_FRAME_HEAD);
 549
 550         led = (struct upgt_lmac_led *)(mem + 1);
 551
 552         led->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 553         led->header1.type = UPGT_H1_TYPE_CTRL;
 554         led->header1.len = htole16(
 555             sizeof(struct upgt_lmac_led) -
 556             sizeof(struct upgt_lmac_header));
 557
 558         led->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 559         led->header2.type = htole16(UPGT_H2_TYPE_LED);
 560         led->header2.flags = 0;
 561
 562         switch (action) {
 563         case UPGT_LED_OFF:
 564                 led->mode = htole16(UPGT_LED_MODE_SET);
 565                 led->action_fix = 0;
 566                 led->action_tmp = htole16(UPGT_LED_ACTION_OFF);
 567                 led->action_tmp_dur = 0;
 568                 break;
 569         case UPGT_LED_ON:
 570                 led->mode = htole16(UPGT_LED_MODE_SET);
 571                 led->action_fix = 0;
 572                 led->action_tmp = htole16(UPGT_LED_ACTION_ON);
 573                 led->action_tmp_dur = 0;
 574                 break;
 575         case UPGT_LED_BLINK:
 576                 if (sc->sc_state != IEEE80211_S_RUN) {
 577                         STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 578                         return;
 579                 }
 580                 if (sc->sc_led_blink) {
 581                         /* previous blink was not finished */
 582                         STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 583                         return;
 584                 }
 585                 led->mode = htole16(UPGT_LED_MODE_SET);
 586                 led->action_fix = htole16(UPGT_LED_ACTION_OFF);
 587                 led->action_tmp = htole16(UPGT_LED_ACTION_ON);
 588                 led->action_tmp_dur = htole16(UPGT_LED_ACTION_TMP_DUR);
 589                 /* lock blink */
 590                 sc->sc_led_blink = 1;
 591                 callout_reset(&sc->sc_led_ch, hz, upgt_set_led_blink, sc);
 592                 break;
 593         default:
 594                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 595                 return;
 596         }
 597
 598         data_cmd->buflen = sizeof(*mem) + sizeof(*led);
 599
 600         mem->chksum = upgt_chksum_le((uint32_t *)led,
 601             data_cmd->buflen - sizeof(*mem));
 602
 603         upgt_bulk_tx(sc, data_cmd);
 604 }
 605
 606 static void
 607 upgt_set_led_blink(void *arg)
 608 {
 609         struct upgt_softc *sc = arg;
 610
 611         /* blink finished, we are ready for a next one */
 612         sc->sc_led_blink = 0;
 613 }
 614
 615 static void
 616 upgt_init(void *priv)
 617 {
 618         struct upgt_softc *sc = priv;
 619         struct ifnet *ifp = sc->sc_ifp;
 620         struct ieee80211com *ic = ifp->if_l2com;
 621
 622         UPGT_LOCK(sc);
 623         upgt_init_locked(sc);
 624         UPGT_UNLOCK(sc);
 625
 626         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 627                 ieee80211_start_all(ic);                /* start all vap's */
 628 }
 629
 630 static void
 631 upgt_init_locked(struct upgt_softc *sc)
 632 {
 633         struct ifnet *ifp = sc->sc_ifp;
 634
 635         UPGT_ASSERT_LOCKED(sc);
 636
 637         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 638                 upgt_stop_locked(sc);
 639
 640         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_RX]);
 641
 642         (void)upgt_set_macfilter(sc, IEEE80211_S_SCAN);
 643
 644         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 645         ifp->if_drv_flags |= IFF_DRV_RUNNING;
 646         sc->sc_flags |= UPGT_FLAG_INITDONE;
 647
 648         callout_reset(&sc->sc_watchdog_ch, hz, upgt_watchdog, sc);
 649 }
 650
 651 static int
 652 upgt_set_macfilter(struct upgt_softc *sc, uint8_t state)
 653 {
 654         struct ifnet *ifp = sc->sc_ifp;
 655         struct ieee80211com *ic = ifp->if_l2com;
 656         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
 657         struct ieee80211_node *ni;
 658         struct upgt_data *data_cmd;
 659         struct upgt_lmac_mem *mem;
 660         struct upgt_lmac_filter *filter;
 661         uint8_t broadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 662
 663         UPGT_ASSERT_LOCKED(sc);
 664
 665         data_cmd = upgt_getbuf(sc);
 666         if (data_cmd == NULL) {
 667                 device_printf(sc->sc_dev, "out of TX buffers.\n");
 668                 return (ENOBUFS);
 669         }
 670
 671         /*
 672          * Transmit the URB containing the CMD data.
 673          */
 674         memset(data_cmd->buf, 0, MCLBYTES);
 675
 676         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 677         mem->addr = htole32(sc->sc_memaddr_frame_start +
 678             UPGT_MEMSIZE_FRAME_HEAD);
 679
 680         filter = (struct upgt_lmac_filter *)(mem + 1);
 681
 682         filter->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 683         filter->header1.type = UPGT_H1_TYPE_CTRL;
 684         filter->header1.len = htole16(
 685             sizeof(struct upgt_lmac_filter) -
 686             sizeof(struct upgt_lmac_header));
 687
 688         filter->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 689         filter->header2.type = htole16(UPGT_H2_TYPE_MACFILTER);
 690         filter->header2.flags = 0;
 691
 692         switch (state) {
 693         case IEEE80211_S_INIT:
 694                 DPRINTF(sc, UPGT_DEBUG_STATE, "%s: set MAC filter to INIT\n",
 695                     __func__);
 696                 filter->type = htole16(UPGT_FILTER_TYPE_RESET);
 697                 break;
 698         case IEEE80211_S_SCAN:
 699                 DPRINTF(sc, UPGT_DEBUG_STATE,
 700                     "set MAC filter to SCAN (bssid %s)\n",
 701                     ether_sprintf(broadcast));
 702                 filter->type = htole16(UPGT_FILTER_TYPE_NONE);
 703                 IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 704                 IEEE80211_ADDR_COPY(filter->src, broadcast);
 705                 filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1);
 706                 filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 707                 filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2);
 708                 filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 709                 filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3);
 710                 break;
 711         case IEEE80211_S_RUN:
 712                 ni = ieee80211_ref_node(vap->iv_bss);
 713                 /* XXX monitor mode isn't tested yet.  */
 714                 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
 715                         filter->type = htole16(UPGT_FILTER_TYPE_MONITOR);
 716                         IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 717                         IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid);
 718                         filter->unknown1 = htole16(UPGT_FILTER_MONITOR_UNKNOWN1);
 719                         filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 720                         filter->unknown2 = htole16(UPGT_FILTER_MONITOR_UNKNOWN2);
 721                         filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 722                         filter->unknown3 = htole16(UPGT_FILTER_MONITOR_UNKNOWN3);
 723                 } else {
 724                         DPRINTF(sc, UPGT_DEBUG_STATE,
 725                             "set MAC filter to RUN (bssid %s)\n",
 726                             ether_sprintf(ni->ni_bssid));
 727                         filter->type = htole16(UPGT_FILTER_TYPE_STA);
 728                         IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 729                         IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid);
 730                         filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1);
 731                         filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 732                         filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2);
 733                         filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 734                         filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3);
 735                 }
 736                 ieee80211_free_node(ni);
 737                 break;
 738         default:
 739                 device_printf(sc->sc_dev,
 740                     "MAC filter does not know that state\n");
 741                 break;
 742         }
 743
 744         data_cmd->buflen = sizeof(*mem) + sizeof(*filter);
 745
 746         mem->chksum = upgt_chksum_le((uint32_t *)filter,
 747             data_cmd->buflen - sizeof(*mem));
 748
 749         upgt_bulk_tx(sc, data_cmd);
 750
 751         return (0);
 752 }
 753
 754 static void
 755 upgt_setup_rates(struct ieee80211vap *vap, struct ieee80211com *ic)
 756 {
 757         struct ifnet *ifp = ic->ic_ifp;
 758         struct upgt_softc *sc = ifp->if_softc;
 759         const struct ieee80211_txparam *tp;
 760
 761         /*
 762          * 0x01 = OFMD6   0x10 = DS1
 763          * 0x04 = OFDM9   0x11 = DS2
 764          * 0x06 = OFDM12  0x12 = DS5
 765          * 0x07 = OFDM18  0x13 = DS11
 766          * 0x08 = OFDM24
 767          * 0x09 = OFDM36
 768          * 0x0a = OFDM48
 769          * 0x0b = OFDM54
 770          */
 771         const uint8_t rateset_auto_11b[] =
 772             { 0x13, 0x13, 0x12, 0x11, 0x11, 0x10, 0x10, 0x10 };
 773         const uint8_t rateset_auto_11g[] =
 774             { 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x04, 0x01 };
 775         const uint8_t rateset_fix_11bg[] =
 776             { 0x10, 0x11, 0x12, 0x13, 0x01, 0x04, 0x06, 0x07,
 777               0x08, 0x09, 0x0a, 0x0b };
 778
 779         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
 780
 781         /* XXX */
 782         if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) {
 783                 /*
 784                  * Automatic rate control is done by the device.
 785                  * We just pass the rateset from which the device
 786                  * will pickup a rate.
 787                  */
 788                 if (ic->ic_curmode == IEEE80211_MODE_11B)
 789                         memcpy(sc->sc_cur_rateset, rateset_auto_11b,
 790                             sizeof(sc->sc_cur_rateset));
 791                 if (ic->ic_curmode == IEEE80211_MODE_11G ||
 792                     ic->ic_curmode == IEEE80211_MODE_AUTO)
 793                         memcpy(sc->sc_cur_rateset, rateset_auto_11g,
 794                             sizeof(sc->sc_cur_rateset));
 795         } else {
 796                 /* set a fixed rate */
 797                 memset(sc->sc_cur_rateset, rateset_fix_11bg[tp->ucastrate],
 798                     sizeof(sc->sc_cur_rateset));
 799         }
 800 }
 801
 802 static void
 803 upgt_set_multi(void *arg)
 804 {
 805         struct upgt_softc *sc = arg;
 806         struct ifnet *ifp = sc->sc_ifp;
 807
 808         if (!(ifp->if_flags & IFF_UP))
 809                 return;
 810
 811         /*
 812          * XXX don't know how to set a device.  Lack of docs.  Just try to set
 813          * IFF_ALLMULTI flag here.
 814          */
 815         ifp->if_flags |= IFF_ALLMULTI;
 816 }
 817
 818 static void
 819 upgt_start(struct ifnet *ifp)
 820 {
 821         struct upgt_softc *sc = ifp->if_softc;
 822         struct upgt_data *data_tx;
 823         struct ieee80211_node *ni;
 824         struct mbuf *m;
 825
 826         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
 827                 return;
 828
 829         UPGT_LOCK(sc);
 830         for (;;) {
 831                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
 832                 if (m == NULL)
 833                         break;
 834
 835                 data_tx = upgt_gettxbuf(sc);
 836                 if (data_tx == NULL) {
 837                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
 838                         break;
 839                 }
 840
 841                 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
 842                 m->m_pkthdr.rcvif = NULL;
 843
 844                 if (upgt_tx_start(sc, m, ni, data_tx) != 0) {
 845                         STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, data_tx, next);
 846                         UPGT_STAT_INC(sc, st_tx_inactive);
 847                         ieee80211_free_node(ni);
 848                         ifp->if_oerrors++;
 849                         continue;
 850                 }
 851                 sc->sc_tx_timer = 5;
 852         }
 853         UPGT_UNLOCK(sc);
 854 }
 855
 856 static int
 857 upgt_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
 858         const struct ieee80211_bpf_params *params)
 859 {
 860         struct ieee80211com *ic = ni->ni_ic;
 861         struct ifnet *ifp = ic->ic_ifp;
 862         struct upgt_softc *sc = ifp->if_softc;
 863         struct upgt_data *data_tx = NULL;
 864
 865         /* prevent management frames from being sent if we're not ready */
 866         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 867                 m_freem(m);
 868                 ieee80211_free_node(ni);
 869                 return ENETDOWN;
 870         }
 871
 872         UPGT_LOCK(sc);
 873         data_tx = upgt_gettxbuf(sc);
 874         if (data_tx == NULL) {
 875                 ieee80211_free_node(ni);
 876                 m_freem(m);
 877                 UPGT_UNLOCK(sc);
 878                 return (ENOBUFS);
 879         }
 880
 881         if (upgt_tx_start(sc, m, ni, data_tx) != 0) {
 882                 STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, data_tx, next);
 883                 UPGT_STAT_INC(sc, st_tx_inactive);
 884                 ieee80211_free_node(ni);
 885                 ifp->if_oerrors++;
 886                 UPGT_UNLOCK(sc);
 887                 return (EIO);
 888         }
 889         UPGT_UNLOCK(sc);
 890
 891         sc->sc_tx_timer = 5;
 892         return (0);
 893 }
 894
 895 static void
 896 upgt_watchdog(void *arg)
 897 {
 898         struct upgt_softc *sc = arg;
 899         struct ifnet *ifp = sc->sc_ifp;
 900
 901         if (sc->sc_tx_timer > 0) {
 902                 if (--sc->sc_tx_timer == 0) {
 903                         device_printf(sc->sc_dev, "watchdog timeout\n");
 904                         /* upgt_init(ifp); XXX needs a process context ? */
 905                         ifp->if_oerrors++;
 906                         return;
 907                 }
 908                 callout_reset(&sc->sc_watchdog_ch, hz, upgt_watchdog, sc);
 909         }
 910 }
 911
 912 static uint32_t
 913 upgt_mem_alloc(struct upgt_softc *sc)
 914 {
 915         int i;
 916
 917         for (i = 0; i < sc->sc_memory.pages; i++) {
 918                 if (sc->sc_memory.page[i].used == 0) {
 919                         sc->sc_memory.page[i].used = 1;
 920                         return (sc->sc_memory.page[i].addr);
 921                 }
 922         }
 923
 924         return (0);
 925 }
 926
 927 static void
 928 upgt_scan_start(struct ieee80211com *ic)
 929 {
 930         /* do nothing.  */
 931 }
 932
 933 static void
 934 upgt_scan_end(struct ieee80211com *ic)
 935 {
 936         /* do nothing.  */
 937 }
 938
 939 static void
 940 upgt_set_channel(struct ieee80211com *ic)
 941 {
 942         struct upgt_softc *sc = ic->ic_ifp->if_softc;
 943
 944         UPGT_LOCK(sc);
 945         upgt_set_chan(sc, ic->ic_curchan);
 946         UPGT_UNLOCK(sc);
 947 }
 948
 949 static void
 950 upgt_set_chan(struct upgt_softc *sc, struct ieee80211_channel *c)
 951 {
 952         struct ifnet *ifp = sc->sc_ifp;
 953         struct ieee80211com *ic = ifp->if_l2com;
 954         struct upgt_data *data_cmd;
 955         struct upgt_lmac_mem *mem;
 956         struct upgt_lmac_channel *chan;
 957         int channel;
 958
 959         UPGT_ASSERT_LOCKED(sc);
 960
 961         channel = ieee80211_chan2ieee(ic, c);
 962         if (channel == 0 || channel == IEEE80211_CHAN_ANY) {
 963                 /* XXX should NEVER happen */
 964                 device_printf(sc->sc_dev,
 965                     "%s: invalid channel %x\n", __func__, channel);
 966                 return;
 967         }
 968
 969         DPRINTF(sc, UPGT_DEBUG_STATE, "%s: channel %d\n", __func__, channel);
 970
 971         data_cmd = upgt_getbuf(sc);
 972         if (data_cmd == NULL) {
 973                 device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
 974                 return;
 975         }
 976         /*
 977          * Transmit the URB containing the CMD data.
 978          */
 979         memset(data_cmd->buf, 0, MCLBYTES);
 980
 981         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 982         mem->addr = htole32(sc->sc_memaddr_frame_start +
 983             UPGT_MEMSIZE_FRAME_HEAD);
 984
 985         chan = (struct upgt_lmac_channel *)(mem + 1);
 986
 987         chan->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 988         chan->header1.type = UPGT_H1_TYPE_CTRL;
 989         chan->header1.len = htole16(
 990             sizeof(struct upgt_lmac_channel) - sizeof(struct upgt_lmac_header));
 991
 992         chan->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 993         chan->header2.type = htole16(UPGT_H2_TYPE_CHANNEL);
 994         chan->header2.flags = 0;
 995
 996         chan->unknown1 = htole16(UPGT_CHANNEL_UNKNOWN1);
 997         chan->unknown2 = htole16(UPGT_CHANNEL_UNKNOWN2);
 998         chan->freq6 = sc->sc_eeprom_freq6[channel];
 999         chan->settings = sc->sc_eeprom_freq6_settings;
1000         chan->unknown3 = UPGT_CHANNEL_UNKNOWN3;
1001
1002         memcpy(chan->freq3_1, &sc->sc_eeprom_freq3[channel].data,
1003             sizeof(chan->freq3_1));
1004         memcpy(chan->freq4, &sc->sc_eeprom_freq4[channel],
1005             sizeof(sc->sc_eeprom_freq4[channel]));
1006         memcpy(chan->freq3_2, &sc->sc_eeprom_freq3[channel].data,
1007             sizeof(chan->freq3_2));
1008
1009         data_cmd->buflen = sizeof(*mem) + sizeof(*chan);
1010
1011         mem->chksum = upgt_chksum_le((uint32_t *)chan,
1012             data_cmd->buflen - sizeof(*mem));
1013
1014         upgt_bulk_tx(sc, data_cmd);
1015 }
1016
1017 static struct ieee80211vap *
1018 upgt_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
1019     enum ieee80211_opmode opmode, int flags,
1020     const uint8_t bssid[IEEE80211_ADDR_LEN],
1021     const uint8_t mac[IEEE80211_ADDR_LEN])
1022 {
1023         struct upgt_vap *uvp;
1024         struct ieee80211vap *vap;
1025
1026         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
1027                 return NULL;
1028         uvp = (struct upgt_vap *) malloc(sizeof(struct upgt_vap),
1029             M_80211_VAP, M_WAITOK | M_ZERO);
1030         if (uvp == NULL)
1031                 return NULL;
1032         vap = &uvp->vap;
1033         /* enable s/w bmiss handling for sta mode */
1034         ieee80211_vap_setup(ic, vap, name, unit, opmode,
1035             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
1036
1037         /* override state transition machine */
1038         uvp->newstate = vap->iv_newstate;
1039         vap->iv_newstate = upgt_newstate;
1040
1041         /* setup device rates */
1042         upgt_setup_rates(vap, ic);
1043
1044         /* complete setup */
1045         ieee80211_vap_attach(vap, ieee80211_media_change,
1046             ieee80211_media_status);
1047         ic->ic_opmode = opmode;
1048         return vap;
1049 }
1050
1051 static int
1052 upgt_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1053 {
1054         struct upgt_vap *uvp = UPGT_VAP(vap);
1055         struct ieee80211com *ic = vap->iv_ic;
1056         struct upgt_softc *sc = ic->ic_ifp->if_softc;
1057
1058         /* do it in a process context */
1059         sc->sc_state = nstate;
1060
1061         IEEE80211_UNLOCK(ic);
1062         UPGT_LOCK(sc);
1063         callout_stop(&sc->sc_led_ch);
1064         callout_stop(&sc->sc_watchdog_ch);
1065
1066         switch (nstate) {
1067         case IEEE80211_S_INIT:
1068                 /* do not accept any frames if the device is down */
1069                 (void)upgt_set_macfilter(sc, sc->sc_state);
1070                 upgt_set_led(sc, UPGT_LED_OFF);
1071                 break;
1072         case IEEE80211_S_SCAN:
1073                 upgt_set_chan(sc, ic->ic_curchan);
1074                 break;
1075         case IEEE80211_S_AUTH:
1076                 upgt_set_chan(sc, ic->ic_curchan);
1077                 break;
1078         case IEEE80211_S_ASSOC:
1079                 break;
1080         case IEEE80211_S_RUN:
1081                 upgt_set_macfilter(sc, sc->sc_state);
1082                 upgt_set_led(sc, UPGT_LED_ON);
1083                 break;
1084         default:
1085                 break;
1086         }
1087         UPGT_UNLOCK(sc);
1088         IEEE80211_LOCK(ic);
1089         return (uvp->newstate(vap, nstate, arg));
1090 }
1091
1092 static void
1093 upgt_vap_delete(struct ieee80211vap *vap)
1094 {
1095         struct upgt_vap *uvp = UPGT_VAP(vap);
1096
1097         ieee80211_vap_detach(vap);
1098         free(uvp, M_80211_VAP);
1099 }
1100
1101 static void
1102 upgt_update_mcast(struct ieee80211com *ic)
1103 {
1104         struct upgt_softc *sc = ic->ic_softc;
1105
1106         upgt_set_multi(sc);
1107 }
1108
1109 static int
1110 upgt_eeprom_parse(struct upgt_softc *sc)
1111 {
1112         struct upgt_eeprom_header *eeprom_header;
1113         struct upgt_eeprom_option *eeprom_option;
1114         uint16_t option_len;
1115         uint16_t option_type;
1116         uint16_t preamble_len;
1117         int option_end = 0;
1118
1119         /* calculate eeprom options start offset */
1120         eeprom_header = (struct upgt_eeprom_header *)sc->sc_eeprom;
1121         preamble_len = le16toh(eeprom_header->preamble_len);
1122         eeprom_option = (struct upgt_eeprom_option *)(sc->sc_eeprom +
1123             (sizeof(struct upgt_eeprom_header) + preamble_len));
1124
1125         while (!option_end) {
1126                 /* the eeprom option length is stored in words */
1127                 option_len =
1128                     (le16toh(eeprom_option->len) - 1) * sizeof(uint16_t);
1129                 option_type =
1130                     le16toh(eeprom_option->type);
1131
1132                 switch (option_type) {
1133                 case UPGT_EEPROM_TYPE_NAME:
1134                         DPRINTF(sc, UPGT_DEBUG_FW,
1135                             "EEPROM name len=%d\n", option_len);
1136                         break;
1137                 case UPGT_EEPROM_TYPE_SERIAL:
1138                         DPRINTF(sc, UPGT_DEBUG_FW,
1139                             "EEPROM serial len=%d\n", option_len);
1140                         break;
1141                 case UPGT_EEPROM_TYPE_MAC:
1142                         DPRINTF(sc, UPGT_DEBUG_FW,
1143                             "EEPROM mac len=%d\n", option_len);
1144
1145                         IEEE80211_ADDR_COPY(sc->sc_myaddr, eeprom_option->data);
1146                         break;
1147                 case UPGT_EEPROM_TYPE_HWRX:
1148                         DPRINTF(sc, UPGT_DEBUG_FW,
1149                             "EEPROM hwrx len=%d\n", option_len);
1150
1151                         upgt_eeprom_parse_hwrx(sc, eeprom_option->data);
1152                         break;
1153                 case UPGT_EEPROM_TYPE_CHIP:
1154                         DPRINTF(sc, UPGT_DEBUG_FW,
1155                             "EEPROM chip len=%d\n", option_len);
1156                         break;
1157                 case UPGT_EEPROM_TYPE_FREQ3:
1158                         DPRINTF(sc, UPGT_DEBUG_FW,
1159                             "EEPROM freq3 len=%d\n", option_len);
1160
1161                         upgt_eeprom_parse_freq3(sc, eeprom_option->data,
1162                             option_len);
1163                         break;
1164                 case UPGT_EEPROM_TYPE_FREQ4:
1165                         DPRINTF(sc, UPGT_DEBUG_FW,
1166                             "EEPROM freq4 len=%d\n", option_len);
1167
1168                         upgt_eeprom_parse_freq4(sc, eeprom_option->data,
1169                             option_len);
1170                         break;
1171                 case UPGT_EEPROM_TYPE_FREQ5:
1172                         DPRINTF(sc, UPGT_DEBUG_FW,
1173                             "EEPROM freq5 len=%d\n", option_len);
1174                         break;
1175                 case UPGT_EEPROM_TYPE_FREQ6:
1176                         DPRINTF(sc, UPGT_DEBUG_FW,
1177                             "EEPROM freq6 len=%d\n", option_len);
1178
1179                         upgt_eeprom_parse_freq6(sc, eeprom_option->data,
1180                             option_len);
1181                         break;
1182                 case UPGT_EEPROM_TYPE_END:
1183                         DPRINTF(sc, UPGT_DEBUG_FW,
1184                             "EEPROM end len=%d\n", option_len);
1185                         option_end = 1;
1186                         break;
1187                 case UPGT_EEPROM_TYPE_OFF:
1188                         DPRINTF(sc, UPGT_DEBUG_FW,
1189                             "%s: EEPROM off without end option\n", __func__);
1190                         return (EIO);
1191                 default:
1192                         DPRINTF(sc, UPGT_DEBUG_FW,
1193                             "EEPROM unknown type 0x%04x len=%d\n",
1194                             option_type, option_len);
1195                         break;
1196                 }
1197
1198                 /* jump to next EEPROM option */
1199                 eeprom_option = (struct upgt_eeprom_option *)
1200                     (eeprom_option->data + option_len);
1201         }
1202
1203         return (0);
1204 }
1205
1206 static void
1207 upgt_eeprom_parse_freq3(struct upgt_softc *sc, uint8_t *data, int len)
1208 {
1209         struct upgt_eeprom_freq3_header *freq3_header;
1210         struct upgt_lmac_freq3 *freq3;
1211         int i, elements, flags;
1212         unsigned channel;
1213
1214         freq3_header = (struct upgt_eeprom_freq3_header *)data;
1215         freq3 = (struct upgt_lmac_freq3 *)(freq3_header + 1);
1216
1217         flags = freq3_header->flags;
1218         elements = freq3_header->elements;
1219
1220         DPRINTF(sc, UPGT_DEBUG_FW, "flags=0x%02x elements=%d\n",
1221             flags, elements);
1222
1223         for (i = 0; i < elements; i++) {
1224                 channel = ieee80211_mhz2ieee(le16toh(freq3[i].freq), 0);
1225                 if (!(channel >= 0 && channel < IEEE80211_CHAN_MAX))
1226                         continue;
1227
1228                 sc->sc_eeprom_freq3[channel] = freq3[i];
1229
1230                 DPRINTF(sc, UPGT_DEBUG_FW, "frequency=%d, channel=%d\n",
1231                     le16toh(sc->sc_eeprom_freq3[channel].freq), channel);
1232         }
1233 }
1234
1235 void
1236 upgt_eeprom_parse_freq4(struct upgt_softc *sc, uint8_t *data, int len)
1237 {
1238         struct upgt_eeprom_freq4_header *freq4_header;
1239         struct upgt_eeprom_freq4_1 *freq4_1;
1240         struct upgt_eeprom_freq4_2 *freq4_2;
1241         int i, j, elements, settings, flags;
1242         unsigned channel;
1243
1244         freq4_header = (struct upgt_eeprom_freq4_header *)data;
1245         freq4_1 = (struct upgt_eeprom_freq4_1 *)(freq4_header + 1);
1246         flags = freq4_header->flags;
1247         elements = freq4_header->elements;
1248         settings = freq4_header->settings;
1249
1250         /* we need this value later */
1251         sc->sc_eeprom_freq6_settings = freq4_header->settings;
1252
1253         DPRINTF(sc, UPGT_DEBUG_FW, "flags=0x%02x elements=%d settings=%d\n",
1254             flags, elements, settings);
1255
1256         for (i = 0; i < elements; i++) {
1257                 channel = ieee80211_mhz2ieee(le16toh(freq4_1[i].freq), 0);
1258                 if (!(channel >= 0 && channel < IEEE80211_CHAN_MAX))
1259                         continue;
1260
1261                 freq4_2 = (struct upgt_eeprom_freq4_2 *)freq4_1[i].data;
1262                 for (j = 0; j < settings; j++) {
1263                         sc->sc_eeprom_freq4[channel][j].cmd = freq4_2[j];
1264                         sc->sc_eeprom_freq4[channel][j].pad = 0;
1265                 }
1266
1267                 DPRINTF(sc, UPGT_DEBUG_FW, "frequency=%d, channel=%d\n",
1268                     le16toh(freq4_1[i].freq), channel);
1269         }
1270 }
1271
1272 void
1273 upgt_eeprom_parse_freq6(struct upgt_softc *sc, uint8_t *data, int len)
1274 {
1275         struct upgt_lmac_freq6 *freq6;
1276         int i, elements;
1277         unsigned channel;
1278
1279         freq6 = (struct upgt_lmac_freq6 *)data;
1280         elements = len / sizeof(struct upgt_lmac_freq6);
1281
1282         DPRINTF(sc, UPGT_DEBUG_FW, "elements=%d\n", elements);
1283
1284         for (i = 0; i < elements; i++) {
1285                 channel = ieee80211_mhz2ieee(le16toh(freq6[i].freq), 0);
1286                 if (!(channel >= 0 && channel < IEEE80211_CHAN_MAX))
1287                         continue;
1288
1289                 sc->sc_eeprom_freq6[channel] = freq6[i];
1290
1291                 DPRINTF(sc, UPGT_DEBUG_FW, "frequency=%d, channel=%d\n",
1292                     le16toh(sc->sc_eeprom_freq6[channel].freq), channel);
1293         }
1294 }
1295
1296 static void
1297 upgt_eeprom_parse_hwrx(struct upgt_softc *sc, uint8_t *data)
1298 {
1299         struct upgt_eeprom_option_hwrx *option_hwrx;
1300
1301         option_hwrx = (struct upgt_eeprom_option_hwrx *)data;
1302
1303         sc->sc_eeprom_hwrx = option_hwrx->rxfilter - UPGT_EEPROM_RX_CONST;
1304
1305         DPRINTF(sc, UPGT_DEBUG_FW, "hwrx option value=0x%04x\n",
1306             sc->sc_eeprom_hwrx);
1307 }
1308
1309 static int
1310 upgt_eeprom_read(struct upgt_softc *sc)
1311 {
1312         struct upgt_data *data_cmd;
1313         struct upgt_lmac_mem *mem;
1314         struct upgt_lmac_eeprom *eeprom;
1315         int block, error, offset;
1316
1317         UPGT_LOCK(sc);
1318         usb_pause_mtx(&sc->sc_mtx, 100);
1319
1320         offset = 0;
1321         block = UPGT_EEPROM_BLOCK_SIZE;
1322         while (offset < UPGT_EEPROM_SIZE) {
1323                 DPRINTF(sc, UPGT_DEBUG_FW,
1324                     "request EEPROM block (offset=%d, len=%d)\n", offset, block);
1325
1326                 data_cmd = upgt_getbuf(sc);
1327                 if (data_cmd == NULL) {
1328                         UPGT_UNLOCK(sc);
1329                         return (ENOBUFS);
1330                 }
1331
1332                 /*
1333                  * Transmit the URB containing the CMD data.
1334                  */
1335                 memset(data_cmd->buf, 0, MCLBYTES);
1336
1337                 mem = (struct upgt_lmac_mem *)data_cmd->buf;
1338                 mem->addr = htole32(sc->sc_memaddr_frame_start +
1339                     UPGT_MEMSIZE_FRAME_HEAD);
1340
1341                 eeprom = (struct upgt_lmac_eeprom *)(mem + 1);
1342                 eeprom->header1.flags = 0;
1343                 eeprom->header1.type = UPGT_H1_TYPE_CTRL;
1344                 eeprom->header1.len = htole16((
1345                     sizeof(struct upgt_lmac_eeprom) -
1346                     sizeof(struct upgt_lmac_header)) + block);
1347
1348                 eeprom->header2.reqid = htole32(sc->sc_memaddr_frame_start);
1349                 eeprom->header2.type = htole16(UPGT_H2_TYPE_EEPROM);
1350                 eeprom->header2.flags = 0;
1351
1352                 eeprom->offset = htole16(offset);
1353                 eeprom->len = htole16(block);
1354
1355                 data_cmd->buflen = sizeof(*mem) + sizeof(*eeprom) + block;
1356
1357                 mem->chksum = upgt_chksum_le((uint32_t *)eeprom,
1358                     data_cmd->buflen - sizeof(*mem));
1359                 upgt_bulk_tx(sc, data_cmd);
1360
1361                 error = mtx_sleep(sc, &sc->sc_mtx, 0, "eeprom_request", hz);
1362                 if (error != 0) {
1363                         device_printf(sc->sc_dev,
1364                             "timeout while waiting for EEPROM data\n");
1365                         UPGT_UNLOCK(sc);
1366                         return (EIO);
1367                 }
1368
1369                 offset += block;
1370                 if (UPGT_EEPROM_SIZE - offset < block)
1371                         block = UPGT_EEPROM_SIZE - offset;
1372         }
1373
1374         UPGT_UNLOCK(sc);
1375         return (0);
1376 }
1377
1378 /*
1379  * When a rx data came in the function returns a mbuf and a rssi values.
1380  */
1381 static struct mbuf *
1382 upgt_rxeof(struct usb_xfer *xfer, struct upgt_data *data, int *rssi)
1383 {
1384         struct mbuf *m = NULL;
1385         struct upgt_softc *sc = usbd_xfer_softc(xfer);
1386         struct upgt_lmac_header *header;
1387         struct upgt_lmac_eeprom *eeprom;
1388         uint8_t h1_type;
1389         uint16_t h2_type;
1390         int actlen, sumlen;
1391
1392         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
1393
1394         UPGT_ASSERT_LOCKED(sc);
1395
1396         if (actlen < 1)
1397                 return (NULL);
1398
1399         /* Check only at the very beginning.  */
1400         if (!(sc->sc_flags & UPGT_FLAG_FWLOADED) &&
1401             (memcmp(data->buf, "OK", 2) == 0)) {
1402                 sc->sc_flags |= UPGT_FLAG_FWLOADED;
1403                 wakeup_one(sc);
1404                 return (NULL);
1405         }
1406
1407         if (actlen < UPGT_RX_MINSZ)
1408                 return (NULL);
1409
1410         /*
1411          * Check what type of frame came in.
1412          */
1413         header = (struct upgt_lmac_header *)(data->buf + 4);
1414
1415         h1_type = header->header1.type;
1416         h2_type = le16toh(header->header2.type);
1417
1418         if (h1_type == UPGT_H1_TYPE_CTRL && h2_type == UPGT_H2_TYPE_EEPROM) {
1419                 eeprom = (struct upgt_lmac_eeprom *)(data->buf + 4);
1420                 uint16_t eeprom_offset = le16toh(eeprom->offset);
1421                 uint16_t eeprom_len = le16toh(eeprom->len);
1422
1423                 DPRINTF(sc, UPGT_DEBUG_FW,
1424                     "received EEPROM block (offset=%d, len=%d)\n",
1425                     eeprom_offset, eeprom_len);
1426
1427                 memcpy(sc->sc_eeprom + eeprom_offset,
1428                     data->buf + sizeof(struct upgt_lmac_eeprom) + 4,
1429                     eeprom_len);
1430
1431                 /* EEPROM data has arrived in time, wakeup.  */
1432                 wakeup(sc);
1433         } else if (h1_type == UPGT_H1_TYPE_CTRL &&
1434             h2_type == UPGT_H2_TYPE_TX_DONE) {
1435                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: received 802.11 TX done\n",
1436                     __func__);
1437                 upgt_tx_done(sc, data->buf + 4);
1438         } else if (h1_type == UPGT_H1_TYPE_RX_DATA ||
1439             h1_type == UPGT_H1_TYPE_RX_DATA_MGMT) {
1440                 DPRINTF(sc, UPGT_DEBUG_RECV, "%s: received 802.11 RX data\n",
1441                     __func__);
1442                 m = upgt_rx(sc, data->buf + 4, le16toh(header->header1.len),
1443                     rssi);
1444         } else if (h1_type == UPGT_H1_TYPE_CTRL &&
1445             h2_type == UPGT_H2_TYPE_STATS) {
1446                 DPRINTF(sc, UPGT_DEBUG_STAT, "%s: received statistic data\n",
1447                     __func__);
1448                 /* TODO: what could we do with the statistic data? */
1449         } else {
1450                 /* ignore unknown frame types */
1451                 DPRINTF(sc, UPGT_DEBUG_INTR,
1452                     "received unknown frame type 0x%02x\n",
1453                     header->header1.type);
1454         }
1455         return (m);
1456 }
1457
1458 /*
1459  * The firmware awaits a checksum for each frame we send to it.
1460  * The algorithm used therefor is uncommon but somehow similar to CRC32.
1461  */
1462 static uint32_t
1463 upgt_chksum_le(const uint32_t *buf, size_t size)
1464 {
1465         int i;
1466         uint32_t crc = 0;
1467
1468         for (i = 0; i < size; i += sizeof(uint32_t)) {
1469                 crc = htole32(crc ^ *buf++);
1470                 crc = htole32((crc >> 5) ^ (crc << 3));
1471         }
1472
1473         return (crc);
1474 }
1475
1476 static struct mbuf *
1477 upgt_rx(struct upgt_softc *sc, uint8_t *data, int pkglen, int *rssi)
1478 {
1479         struct ifnet *ifp = sc->sc_ifp;
1480         struct ieee80211com *ic = ifp->if_l2com;
1481         struct upgt_lmac_rx_desc *rxdesc;
1482         struct mbuf *m;
1483
1484         /*
1485          * don't pass packets to the ieee80211 framework if the driver isn't
1486          * RUNNING.
1487          */
1488         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
1489                 return (NULL);
1490
1491         /* access RX packet descriptor */
1492         rxdesc = (struct upgt_lmac_rx_desc *)data;
1493
1494         /* create mbuf which is suitable for strict alignment archs */
1495         KASSERT((pkglen + ETHER_ALIGN) < MCLBYTES,
1496             ("A current mbuf storage is small (%d)", pkglen + ETHER_ALIGN));
1497         m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1498         if (m == NULL) {
1499                 device_printf(sc->sc_dev, "could not create RX mbuf\n");
1500                 return (NULL);
1501         }
1502         m_adj(m, ETHER_ALIGN);
1503         memcpy(mtod(m, char *), rxdesc->data, pkglen);
1504         /* trim FCS */
1505         m->m_len = m->m_pkthdr.len = pkglen - IEEE80211_CRC_LEN;
1506         m->m_pkthdr.rcvif = ifp;
1507
1508         if (ieee80211_radiotap_active(ic)) {
1509                 struct upgt_rx_radiotap_header *tap = &sc->sc_rxtap;
1510
1511                 tap->wr_flags = 0;
1512                 tap->wr_rate = upgt_rx_rate(sc, rxdesc->rate);
1513                 tap->wr_antsignal = rxdesc->rssi;
1514         }
1515         ifp->if_ipackets++;
1516
1517         DPRINTF(sc, UPGT_DEBUG_RX_PROC, "%s: RX done\n", __func__);
1518         *rssi = rxdesc->rssi;
1519         return (m);
1520 }
1521
1522 static uint8_t
1523 upgt_rx_rate(struct upgt_softc *sc, const int rate)
1524 {
1525         struct ifnet *ifp = sc->sc_ifp;
1526         struct ieee80211com *ic = ifp->if_l2com;
1527         static const uint8_t cck_upgt2rate[4] = { 2, 4, 11, 22 };
1528         static const uint8_t ofdm_upgt2rate[12] =
1529             { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 };
1530
1531         if (ic->ic_curmode == IEEE80211_MODE_11B &&
1532             !(rate < 0 || rate > 3))
1533                 return cck_upgt2rate[rate & 0xf];
1534
1535         if (ic->ic_curmode == IEEE80211_MODE_11G &&
1536             !(rate < 0 || rate > 11))
1537                 return ofdm_upgt2rate[rate & 0xf];
1538
1539         return (0);
1540 }
1541
1542 static void
1543 upgt_tx_done(struct upgt_softc *sc, uint8_t *data)
1544 {
1545         struct ifnet *ifp = sc->sc_ifp;
1546         struct upgt_lmac_tx_done_desc *desc;
1547         int i, freed = 0;
1548
1549         UPGT_ASSERT_LOCKED(sc);
1550
1551         desc = (struct upgt_lmac_tx_done_desc *)data;
1552
1553         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
1554                 struct upgt_data *data_tx = &sc->sc_tx_data[i];
1555
1556                 if (data_tx->addr == le32toh(desc->header2.reqid)) {
1557                         upgt_mem_free(sc, data_tx->addr);
1558                         data_tx->ni = NULL;
1559                         data_tx->addr = 0;
1560                         data_tx->m = NULL;
1561                         data_tx->use = 0;
1562
1563                         DPRINTF(sc, UPGT_DEBUG_TX_PROC,
1564                             "TX done: memaddr=0x%08x, status=0x%04x, rssi=%d, ",
1565                             le32toh(desc->header2.reqid),
1566                             le16toh(desc->status), le16toh(desc->rssi));
1567                         DPRINTF(sc, UPGT_DEBUG_TX_PROC, "seq=%d\n",
1568                             le16toh(desc->seq));
1569
1570                         freed++;
1571                 }
1572         }
1573
1574         if (freed != 0) {
1575                 sc->sc_tx_timer = 0;
1576                 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1577                 UPGT_UNLOCK(sc);
1578                 upgt_start(ifp);
1579                 UPGT_LOCK(sc);
1580         }
1581 }
1582
1583 static void
1584 upgt_mem_free(struct upgt_softc *sc, uint32_t addr)
1585 {
1586         int i;
1587
1588         for (i = 0; i < sc->sc_memory.pages; i++) {
1589                 if (sc->sc_memory.page[i].addr == addr) {
1590                         sc->sc_memory.page[i].used = 0;
1591                         return;
1592                 }
1593         }
1594
1595         device_printf(sc->sc_dev,
1596             "could not free memory address 0x%08x\n", addr);
1597 }
1598
1599 static int
1600 upgt_fw_load(struct upgt_softc *sc)
1601 {
1602         const struct firmware *fw;
1603         struct upgt_data *data_cmd;
1604         struct upgt_fw_x2_header *x2;
1605         char start_fwload_cmd[] = { 0x3c, 0x0d };
1606         int error = 0, offset, bsize, n;
1607         uint32_t crc32;
1608
1609         fw = firmware_get(upgt_fwname);
1610         if (fw == NULL) {
1611                 device_printf(sc->sc_dev, "could not read microcode %s\n",
1612                     upgt_fwname);
1613                 return (EIO);
1614         }
1615
1616         UPGT_LOCK(sc);
1617
1618         /* send firmware start load command */
1619         data_cmd = upgt_getbuf(sc);
1620         if (data_cmd == NULL) {
1621                 error = ENOBUFS;
1622                 goto fail;
1623         }
1624         data_cmd->buflen = sizeof(start_fwload_cmd);
1625         memcpy(data_cmd->buf, start_fwload_cmd, data_cmd->buflen);
1626         upgt_bulk_tx(sc, data_cmd);
1627
1628         /* send X2 header */
1629         data_cmd = upgt_getbuf(sc);
1630         if (data_cmd == NULL) {
1631                 error = ENOBUFS;
1632                 goto fail;
1633         }
1634         data_cmd->buflen = sizeof(struct upgt_fw_x2_header);
1635         x2 = (struct upgt_fw_x2_header *)data_cmd->buf;
1636         memcpy(x2->signature, UPGT_X2_SIGNATURE, UPGT_X2_SIGNATURE_SIZE);
1637         x2->startaddr = htole32(UPGT_MEMADDR_FIRMWARE_START);
1638         x2->len = htole32(fw->datasize);
1639         x2->crc = upgt_crc32_le((uint8_t *)data_cmd->buf +
1640             UPGT_X2_SIGNATURE_SIZE,
1641             sizeof(struct upgt_fw_x2_header) - UPGT_X2_SIGNATURE_SIZE -
1642             sizeof(uint32_t));
1643         upgt_bulk_tx(sc, data_cmd);
1644
1645         /* download firmware */
1646         for (offset = 0; offset < fw->datasize; offset += bsize) {
1647                 if (fw->datasize - offset > UPGT_FW_BLOCK_SIZE)
1648                         bsize = UPGT_FW_BLOCK_SIZE;
1649                 else
1650                         bsize = fw->datasize - offset;
1651
1652                 data_cmd = upgt_getbuf(sc);
1653                 if (data_cmd == NULL) {
1654                         error = ENOBUFS;
1655                         goto fail;
1656                 }
1657                 n = upgt_fw_copy((const uint8_t *)fw->data + offset,
1658                     data_cmd->buf, bsize);
1659                 data_cmd->buflen = bsize;
1660                 upgt_bulk_tx(sc, data_cmd);
1661
1662                 DPRINTF(sc, UPGT_DEBUG_FW, "FW offset=%d, read=%d, sent=%d\n",
1663                     offset, n, bsize);
1664                 bsize = n;
1665         }
1666         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware downloaded\n", __func__);
1667
1668         /* load firmware */
1669         data_cmd = upgt_getbuf(sc);
1670         if (data_cmd == NULL) {
1671                 error = ENOBUFS;
1672                 goto fail;
1673         }
1674         crc32 = upgt_crc32_le(fw->data, fw->datasize);
1675         *((uint32_t *)(data_cmd->buf)    ) = crc32;
1676         *((uint8_t  *)(data_cmd->buf) + 4) = 'g';
1677         *((uint8_t  *)(data_cmd->buf) + 5) = '\r';
1678         data_cmd->buflen = 6;
1679         upgt_bulk_tx(sc, data_cmd);
1680
1681         /* waiting 'OK' response.  */
1682         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_RX]);
1683         error = mtx_sleep(sc, &sc->sc_mtx, 0, "upgtfw", 2 * hz);
1684         if (error != 0) {
1685                 device_printf(sc->sc_dev, "firmware load failed\n");
1686                 error = EIO;
1687         }
1688
1689         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware loaded\n", __func__);
1690 fail:
1691         UPGT_UNLOCK(sc);
1692         firmware_put(fw, FIRMWARE_UNLOAD);
1693         return (error);
1694 }
1695
1696 static uint32_t
1697 upgt_crc32_le(const void *buf, size_t size)
1698 {
1699         uint32_t crc;
1700
1701         crc = ether_crc32_le(buf, size);
1702
1703         /* apply final XOR value as common for CRC-32 */
1704         crc = htole32(crc ^ 0xffffffffU);
1705
1706         return (crc);
1707 }
1708
1709 /*
1710  * While copying the version 2 firmware, we need to replace two characters:
1711  *
1712  * 0x7e -> 0x7d 0x5e
1713  * 0x7d -> 0x7d 0x5d
1714  */
1715 static int
1716 upgt_fw_copy(const uint8_t *src, char *dst, int size)
1717 {
1718         int i, j;
1719
1720         for (i = 0, j = 0; i < size && j < size; i++) {
1721                 switch (src[i]) {
1722                 case 0x7e:
1723                         dst[j] = 0x7d;
1724                         j++;
1725                         dst[j] = 0x5e;
1726                         j++;
1727                         break;
1728                 case 0x7d:
1729                         dst[j] = 0x7d;
1730                         j++;
1731                         dst[j] = 0x5d;
1732                         j++;
1733                         break;
1734                 default:
1735                         dst[j] = src[i];
1736                         j++;
1737                         break;
1738                 }
1739         }
1740
1741         return (i);
1742 }
1743
1744 static int
1745 upgt_mem_init(struct upgt_softc *sc)
1746 {
1747         int i;
1748
1749         for (i = 0; i < UPGT_MEMORY_MAX_PAGES; i++) {
1750                 sc->sc_memory.page[i].used = 0;
1751
1752                 if (i == 0) {
1753                         /*
1754                          * The first memory page is always reserved for
1755                          * command data.
1756                          */
1757                         sc->sc_memory.page[i].addr =
1758                             sc->sc_memaddr_frame_start + MCLBYTES;
1759                 } else {
1760                         sc->sc_memory.page[i].addr =
1761                             sc->sc_memory.page[i - 1].addr + MCLBYTES;
1762                 }
1763
1764                 if (sc->sc_memory.page[i].addr + MCLBYTES >=
1765                     sc->sc_memaddr_frame_end)
1766                         break;
1767
1768                 DPRINTF(sc, UPGT_DEBUG_FW, "memory address page %d=0x%08x\n",
1769                     i, sc->sc_memory.page[i].addr);
1770         }
1771
1772         sc->sc_memory.pages = i;
1773
1774         DPRINTF(sc, UPGT_DEBUG_FW, "memory pages=%d\n", sc->sc_memory.pages);
1775         return (0);
1776 }
1777
1778 static int
1779 upgt_fw_verify(struct upgt_softc *sc)
1780 {
1781         const struct firmware *fw;
1782         const struct upgt_fw_bra_option *bra_opt;
1783         const struct upgt_fw_bra_descr *descr;
1784         const uint8_t *p;
1785         const uint32_t *uc;
1786         uint32_t bra_option_type, bra_option_len;
1787         int offset, bra_end = 0, error = 0;
1788
1789         fw = firmware_get(upgt_fwname);
1790         if (fw == NULL) {
1791                 device_printf(sc->sc_dev, "could not read microcode %s\n",
1792                     upgt_fwname);
1793                 return EIO;
1794         }
1795
1796         /*
1797          * Seek to beginning of Boot Record Area (BRA).
1798          */
1799         for (offset = 0; offset < fw->datasize; offset += sizeof(*uc)) {
1800                 uc = (const uint32_t *)((const uint8_t *)fw->data + offset);
1801                 if (*uc == 0)
1802                         break;
1803         }
1804         for (; offset < fw->datasize; offset += sizeof(*uc)) {
1805                 uc = (const uint32_t *)((const uint8_t *)fw->data + offset);
1806                 if (*uc != 0)
1807                         break;
1808         }
1809         if (offset == fw->datasize) {
1810                 device_printf(sc->sc_dev,
1811                     "firmware Boot Record Area not found\n");
1812                 error = EIO;
1813                 goto fail;
1814         }
1815
1816         DPRINTF(sc, UPGT_DEBUG_FW,
1817             "firmware Boot Record Area found at offset %d\n", offset);
1818
1819         /*
1820          * Parse Boot Record Area (BRA) options.
1821          */
1822         while (offset < fw->datasize && bra_end == 0) {
1823                 /* get current BRA option */
1824                 p = (const uint8_t *)fw->data + offset;
1825                 bra_opt = (const struct upgt_fw_bra_option *)p;
1826                 bra_option_type = le32toh(bra_opt->type);
1827                 bra_option_len = le32toh(bra_opt->len) * sizeof(*uc);
1828
1829                 switch (bra_option_type) {
1830                 case UPGT_BRA_TYPE_FW:
1831                         DPRINTF(sc, UPGT_DEBUG_FW, "UPGT_BRA_TYPE_FW len=%d\n",
1832                             bra_option_len);
1833
1834                         if (bra_option_len != UPGT_BRA_FWTYPE_SIZE) {
1835                                 device_printf(sc->sc_dev,
1836                                     "wrong UPGT_BRA_TYPE_FW len\n");
1837                                 error = EIO;
1838                                 goto fail;
1839                         }
1840                         if (memcmp(UPGT_BRA_FWTYPE_LM86, bra_opt->data,
1841                             bra_option_len) == 0) {
1842                                 sc->sc_fw_type = UPGT_FWTYPE_LM86;
1843                                 break;
1844                         }
1845                         if (memcmp(UPGT_BRA_FWTYPE_LM87, bra_opt->data,
1846                             bra_option_len) == 0) {
1847                                 sc->sc_fw_type = UPGT_FWTYPE_LM87;
1848                                 break;
1849                         }
1850                         device_printf(sc->sc_dev,
1851                             "unsupported firmware type\n");
1852                         error = EIO;
1853                         goto fail;
1854                 case UPGT_BRA_TYPE_VERSION:
1855                         DPRINTF(sc, UPGT_DEBUG_FW,
1856                             "UPGT_BRA_TYPE_VERSION len=%d\n", bra_option_len);
1857                         break;
1858                 case UPGT_BRA_TYPE_DEPIF:
1859                         DPRINTF(sc, UPGT_DEBUG_FW,
1860                             "UPGT_BRA_TYPE_DEPIF len=%d\n", bra_option_len);
1861                         break;
1862                 case UPGT_BRA_TYPE_EXPIF:
1863                         DPRINTF(sc, UPGT_DEBUG_FW,
1864                             "UPGT_BRA_TYPE_EXPIF len=%d\n", bra_option_len);
1865                         break;
1866                 case UPGT_BRA_TYPE_DESCR:
1867                         DPRINTF(sc, UPGT_DEBUG_FW,
1868                             "UPGT_BRA_TYPE_DESCR len=%d\n", bra_option_len);
1869
1870                         descr = (const struct upgt_fw_bra_descr *)bra_opt->data;
1871
1872                         sc->sc_memaddr_frame_start =
1873                             le32toh(descr->memaddr_space_start);
1874                         sc->sc_memaddr_frame_end =
1875                             le32toh(descr->memaddr_space_end);
1876
1877                         DPRINTF(sc, UPGT_DEBUG_FW,
1878                             "memory address space start=0x%08x\n",
1879                             sc->sc_memaddr_frame_start);
1880                         DPRINTF(sc, UPGT_DEBUG_FW,
1881                             "memory address space end=0x%08x\n",
1882                             sc->sc_memaddr_frame_end);
1883                         break;
1884                 case UPGT_BRA_TYPE_END:
1885                         DPRINTF(sc, UPGT_DEBUG_FW, "UPGT_BRA_TYPE_END len=%d\n",
1886                             bra_option_len);
1887                         bra_end = 1;
1888                         break;
1889                 default:
1890                         DPRINTF(sc, UPGT_DEBUG_FW, "unknown BRA option len=%d\n",
1891                             bra_option_len);
1892                         error = EIO;
1893                         goto fail;
1894                 }
1895
1896                 /* jump to next BRA option */
1897                 offset += sizeof(struct upgt_fw_bra_option) + bra_option_len;
1898         }
1899
1900         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware verified", __func__);
1901 fail:
1902         firmware_put(fw, FIRMWARE_UNLOAD);
1903         return (error);
1904 }
1905
1906 static void
1907 upgt_bulk_tx(struct upgt_softc *sc, struct upgt_data *data)
1908 {
1909
1910         UPGT_ASSERT_LOCKED(sc);
1911
1912         STAILQ_INSERT_TAIL(&sc->sc_tx_pending, data, next);
1913         UPGT_STAT_INC(sc, st_tx_pending);
1914         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_TX]);
1915 }
1916
1917 static int
1918 upgt_device_reset(struct upgt_softc *sc)
1919 {
1920         struct upgt_data *data;
1921         char init_cmd[] = { 0x7e, 0x7e, 0x7e, 0x7e };
1922
1923         UPGT_LOCK(sc);
1924
1925         data = upgt_getbuf(sc);
1926         if (data == NULL) {
1927                 UPGT_UNLOCK(sc);
1928                 return (ENOBUFS);
1929         }
1930         memcpy(data->buf, init_cmd, sizeof(init_cmd));
1931         data->buflen = sizeof(init_cmd);
1932         upgt_bulk_tx(sc, data);
1933         usb_pause_mtx(&sc->sc_mtx, 100);
1934
1935         UPGT_UNLOCK(sc);
1936         DPRINTF(sc, UPGT_DEBUG_FW, "%s: device initialized\n", __func__);
1937         return (0);
1938 }
1939
1940 static int
1941 upgt_alloc_tx(struct upgt_softc *sc)
1942 {
1943         int i;
1944
1945         STAILQ_INIT(&sc->sc_tx_active);
1946         STAILQ_INIT(&sc->sc_tx_inactive);
1947         STAILQ_INIT(&sc->sc_tx_pending);
1948
1949         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
1950                 struct upgt_data *data = &sc->sc_tx_data[i];
1951
1952                 data->buf = malloc(MCLBYTES, M_USBDEV, M_WAITOK | M_ZERO);
1953                 if (data->buf == NULL) {
1954                         device_printf(sc->sc_dev,
1955                             "could not allocate TX buffer\n");
1956                         return (ENOMEM);
1957                 }
1958                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
1959                 UPGT_STAT_INC(sc, st_tx_inactive);
1960         }
1961
1962         return (0);
1963 }
1964
1965 static int
1966 upgt_alloc_rx(struct upgt_softc *sc)
1967 {
1968         int i;
1969
1970         STAILQ_INIT(&sc->sc_rx_active);
1971         STAILQ_INIT(&sc->sc_rx_inactive);
1972
1973         for (i = 0; i < UPGT_RX_MAXCOUNT; i++) {
1974                 struct upgt_data *data = &sc->sc_rx_data[i];
1975
1976                 data->buf = malloc(MCLBYTES, M_USBDEV, M_WAITOK | M_ZERO);
1977                 if (data->buf == NULL) {
1978                         device_printf(sc->sc_dev,
1979                             "could not allocate RX buffer\n");
1980                         return (ENOMEM);
1981                 }
1982                 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
1983         }
1984
1985         return (0);
1986 }
1987
1988 static int
1989 upgt_detach(device_t dev)
1990 {
1991         struct upgt_softc *sc = device_get_softc(dev);
1992         struct ifnet *ifp = sc->sc_ifp;
1993         struct ieee80211com *ic = ifp->if_l2com;
1994
1995         if (!device_is_attached(dev))
1996                 return 0;
1997
1998         upgt_stop(sc);
1999
2000         callout_drain(&sc->sc_led_ch);
2001         callout_drain(&sc->sc_watchdog_ch);
2002
2003         usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
2004         ieee80211_ifdetach(ic);
2005         upgt_free_rx(sc);
2006         upgt_free_tx(sc);
2007
2008         if_free(ifp);
2009         mtx_destroy(&sc->sc_mtx);
2010
2011         return (0);
2012 }
2013
2014 static void
2015 upgt_free_rx(struct upgt_softc *sc)
2016 {
2017         int i;
2018
2019         for (i = 0; i < UPGT_RX_MAXCOUNT; i++) {
2020                 struct upgt_data *data = &sc->sc_rx_data[i];
2021
2022                 free(data->buf, M_USBDEV);
2023                 data->ni = NULL;
2024         }
2025 }
2026
2027 static void
2028 upgt_free_tx(struct upgt_softc *sc)
2029 {
2030         int i;
2031
2032         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
2033                 struct upgt_data *data = &sc->sc_tx_data[i];
2034
2035                 free(data->buf, M_USBDEV);
2036                 data->ni = NULL;
2037         }
2038 }
2039
2040 static void
2041 upgt_abort_xfers_locked(struct upgt_softc *sc)
2042 {
2043         int i;
2044
2045         UPGT_ASSERT_LOCKED(sc);
2046         /* abort any pending transfers */
2047         for (i = 0; i < UPGT_N_XFERS; i++)
2048                 usbd_transfer_stop(sc->sc_xfer[i]);
2049 }
2050
2051 static void
2052 upgt_abort_xfers(struct upgt_softc *sc)
2053 {
2054
2055         UPGT_LOCK(sc);
2056         upgt_abort_xfers_locked(sc);
2057         UPGT_UNLOCK(sc);
2058 }
2059
2060 #define UPGT_SYSCTL_STAT_ADD32(c, h, n, p, d)   \
2061             SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
2062
2063 static void
2064 upgt_sysctl_node(struct upgt_softc *sc)
2065 {
2066         struct sysctl_ctx_list *ctx;
2067         struct sysctl_oid_list *child;
2068         struct sysctl_oid *tree;
2069         struct upgt_stat *stats;
2070
2071         stats = &sc->sc_stat;
2072         ctx = device_get_sysctl_ctx(sc->sc_dev);
2073         child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->sc_dev));
2074
2075         tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
2076             NULL, "UPGT statistics");
2077         child = SYSCTL_CHILDREN(tree);
2078         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_active",
2079             &stats->st_tx_active, "Active numbers in TX queue");
2080         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_inactive",
2081             &stats->st_tx_inactive, "Inactive numbers in TX queue");
2082         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_pending",
2083             &stats->st_tx_pending, "Pending numbers in TX queue");
2084 }
2085
2086 #undef UPGT_SYSCTL_STAT_ADD32
2087
2088 static struct upgt_data *
2089 _upgt_getbuf(struct upgt_softc *sc)
2090 {
2091         struct upgt_data *bf;
2092
2093         bf = STAILQ_FIRST(&sc->sc_tx_inactive);
2094         if (bf != NULL) {
2095                 STAILQ_REMOVE_HEAD(&sc->sc_tx_inactive, next);
2096                 UPGT_STAT_DEC(sc, st_tx_inactive);
2097         } else
2098                 bf = NULL;
2099         if (bf == NULL)
2100                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: %s\n", __func__,
2101                     "out of xmit buffers");
2102         return (bf);
2103 }
2104
2105 static struct upgt_data *
2106 upgt_getbuf(struct upgt_softc *sc)
2107 {
2108         struct upgt_data *bf;
2109
2110         UPGT_ASSERT_LOCKED(sc);
2111
2112         bf = _upgt_getbuf(sc);
2113         if (bf == NULL) {
2114                 struct ifnet *ifp = sc->sc_ifp;
2115
2116                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: stop queue\n", __func__);
2117                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2118         }
2119
2120         return (bf);
2121 }
2122
2123 static struct upgt_data *
2124 upgt_gettxbuf(struct upgt_softc *sc)
2125 {
2126         struct upgt_data *bf;
2127
2128         UPGT_ASSERT_LOCKED(sc);
2129
2130         bf = upgt_getbuf(sc);
2131         if (bf == NULL)
2132                 return (NULL);
2133
2134         bf->addr = upgt_mem_alloc(sc);
2135         if (bf->addr == 0) {
2136                 struct ifnet *ifp = sc->sc_ifp;
2137
2138                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: no free prism memory!\n",
2139                     __func__);
2140                 STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, bf, next);
2141                 UPGT_STAT_INC(sc, st_tx_inactive);
2142                 if (!(ifp->if_drv_flags & IFF_DRV_OACTIVE))
2143                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2144                 return (NULL);
2145         }
2146         return (bf);
2147 }
2148
2149 static int
2150 upgt_tx_start(struct upgt_softc *sc, struct mbuf *m, struct ieee80211_node *ni,
2151     struct upgt_data *data)
2152 {
2153         struct ieee80211vap *vap = ni->ni_vap;
2154         int error = 0, len;
2155         struct ieee80211_frame *wh;
2156         struct ieee80211_key *k;
2157         struct ifnet *ifp = sc->sc_ifp;
2158         struct upgt_lmac_mem *mem;
2159         struct upgt_lmac_tx_desc *txdesc;
2160
2161         UPGT_ASSERT_LOCKED(sc);
2162
2163         upgt_set_led(sc, UPGT_LED_BLINK);
2164
2165         /*
2166          * Software crypto.
2167          */
2168         wh = mtod(m, struct ieee80211_frame *);
2169         if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
2170                 k = ieee80211_crypto_encap(ni, m);
2171                 if (k == NULL) {
2172                         device_printf(sc->sc_dev,
2173                             "ieee80211_crypto_encap returns NULL.\n");
2174                         error = EIO;
2175                         goto done;
2176                 }
2177
2178                 /* in case packet header moved, reset pointer */
2179                 wh = mtod(m, struct ieee80211_frame *);
2180         }
2181
2182         /* Transmit the URB containing the TX data.  */
2183         memset(data->buf, 0, MCLBYTES);
2184         mem = (struct upgt_lmac_mem *)data->buf;
2185         mem->addr = htole32(data->addr);
2186         txdesc = (struct upgt_lmac_tx_desc *)(mem + 1);
2187
2188         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
2189             IEEE80211_FC0_TYPE_MGT) {
2190                 /* mgmt frames  */
2191                 txdesc->header1.flags = UPGT_H1_FLAGS_TX_MGMT;
2192                 /* always send mgmt frames at lowest rate (DS1) */
2193                 memset(txdesc->rates, 0x10, sizeof(txdesc->rates));
2194         } else {
2195                 /* data frames  */
2196                 txdesc->header1.flags = UPGT_H1_FLAGS_TX_DATA;
2197                 memcpy(txdesc->rates, sc->sc_cur_rateset, sizeof(txdesc->rates));
2198         }
2199         txdesc->header1.type = UPGT_H1_TYPE_TX_DATA;
2200         txdesc->header1.len = htole16(m->m_pkthdr.len);
2201         txdesc->header2.reqid = htole32(data->addr);
2202         txdesc->header2.type = htole16(UPGT_H2_TYPE_TX_ACK_YES);
2203         txdesc->header2.flags = htole16(UPGT_H2_FLAGS_TX_ACK_YES);
2204         txdesc->type = htole32(UPGT_TX_DESC_TYPE_DATA);
2205         txdesc->pad3[0] = UPGT_TX_DESC_PAD3_SIZE;
2206
2207         if (ieee80211_radiotap_active_vap(vap)) {
2208                 struct upgt_tx_radiotap_header *tap = &sc->sc_txtap;
2209
2210                 tap->wt_flags = 0;
2211                 tap->wt_rate = 0;       /* XXX where to get from? */
2212
2213                 ieee80211_radiotap_tx(vap, m);
2214         }
2215
2216         /* copy frame below our TX descriptor header */
2217         m_copydata(m, 0, m->m_pkthdr.len,
2218             data->buf + (sizeof(*mem) + sizeof(*txdesc)));
2219         /* calculate frame size */
2220         len = sizeof(*mem) + sizeof(*txdesc) + m->m_pkthdr.len;
2221         /* we need to align the frame to a 4 byte boundary */
2222         len = (len + 3) & ~3;
2223         /* calculate frame checksum */
2224         mem->chksum = upgt_chksum_le((uint32_t *)txdesc, len - sizeof(*mem));
2225         data->ni = ni;
2226         data->m = m;
2227         data->buflen = len;
2228
2229         DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: TX start data sending (%d bytes)\n",
2230             __func__, len);
2231         KASSERT(len <= MCLBYTES, ("mbuf is small for saving data"));
2232
2233         upgt_bulk_tx(sc, data);
2234 done:
2235         /*
2236          * If we don't regulary read the device statistics, the RX queue
2237          * will stall.  It's strange, but it works, so we keep reading
2238          * the statistics here.  *shrug*
2239          */
2240         if (!(ifp->if_opackets % UPGT_TX_STAT_INTERVAL))
2241                 upgt_get_stats(sc);
2242
2243         return (error);
2244 }
2245
2246 static void
2247 upgt_bulk_rx_callback(struct usb_xfer *xfer, usb_error_t error)
2248 {
2249         struct upgt_softc *sc = usbd_xfer_softc(xfer);
2250         struct ifnet *ifp = sc->sc_ifp;
2251         struct ieee80211com *ic = ifp->if_l2com;
2252         struct ieee80211_frame *wh;
2253         struct ieee80211_node *ni;
2254         struct mbuf *m = NULL;
2255         struct upgt_data *data;
2256         int8_t nf;
2257         int rssi = -1;
2258
2259         UPGT_ASSERT_LOCKED(sc);
2260
2261         switch (USB_GET_STATE(xfer)) {
2262         case USB_ST_TRANSFERRED:
2263                 data = STAILQ_FIRST(&sc->sc_rx_active);
2264                 if (data == NULL)
2265                         goto setup;
2266                 STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2267                 m = upgt_rxeof(xfer, data, &rssi);
2268                 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2269                 /* FALLTHROUGH */
2270         case USB_ST_SETUP:
2271 setup:
2272                 data = STAILQ_FIRST(&sc->sc_rx_inactive);
2273                 if (data == NULL)
2274                         return;
2275                 STAILQ_REMOVE_HEAD(&sc->sc_rx_inactive, next);
2276                 STAILQ_INSERT_TAIL(&sc->sc_rx_active, data, next);
2277                 usbd_xfer_set_frame_data(xfer, 0, data->buf,
2278                     usbd_xfer_max_len(xfer));
2279                 usbd_transfer_submit(xfer);
2280
2281                 /*
2282                  * To avoid LOR we should unlock our private mutex here to call
2283                  * ieee80211_input() because here is at the end of a USB
2284                  * callback and safe to unlock.
2285                  */
2286                 UPGT_UNLOCK(sc);
2287                 if (m != NULL) {
2288                         wh = mtod(m, struct ieee80211_frame *);
2289                         ni = ieee80211_find_rxnode(ic,
2290                             (struct ieee80211_frame_min *)wh);
2291                         nf = -95;       /* XXX */
2292                         if (ni != NULL) {
2293                                 (void) ieee80211_input(ni, m, rssi, nf);
2294                                 /* node is no longer needed */
2295                                 ieee80211_free_node(ni);
2296                         } else
2297                                 (void) ieee80211_input_all(ic, m, rssi, nf);
2298                         m = NULL;
2299                 }
2300                 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
2301                     !IFQ_IS_EMPTY(&ifp->if_snd))
2302                         upgt_start(ifp);
2303                 UPGT_LOCK(sc);
2304                 break;
2305         default:
2306                 /* needs it to the inactive queue due to a error.  */
2307                 data = STAILQ_FIRST(&sc->sc_rx_active);
2308                 if (data != NULL) {
2309                         STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2310                         STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2311                 }
2312                 if (error != USB_ERR_CANCELLED) {
2313                         usbd_xfer_set_stall(xfer);
2314                         ifp->if_ierrors++;
2315                         goto setup;
2316                 }
2317                 break;
2318         }
2319 }
2320
2321 static void
2322 upgt_bulk_tx_callback(struct usb_xfer *xfer, usb_error_t error)
2323 {
2324         struct upgt_softc *sc = usbd_xfer_softc(xfer);
2325         struct ifnet *ifp = sc->sc_ifp;
2326         struct upgt_data *data;
2327
2328         UPGT_ASSERT_LOCKED(sc);
2329         switch (USB_GET_STATE(xfer)) {
2330         case USB_ST_TRANSFERRED:
2331                 data = STAILQ_FIRST(&sc->sc_tx_active);
2332                 if (data == NULL)
2333                         goto setup;
2334                 STAILQ_REMOVE_HEAD(&sc->sc_tx_active, next);
2335                 UPGT_STAT_DEC(sc, st_tx_active);
2336                 upgt_txeof(xfer, data);
2337                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
2338                 UPGT_STAT_INC(sc, st_tx_inactive);
2339                 /* FALLTHROUGH */
2340         case USB_ST_SETUP:
2341 setup:
2342                 data = STAILQ_FIRST(&sc->sc_tx_pending);
2343                 if (data == NULL) {
2344                         DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: empty pending queue\n",
2345                             __func__);
2346                         return;
2347                 }
2348                 STAILQ_REMOVE_HEAD(&sc->sc_tx_pending, next);
2349                 UPGT_STAT_DEC(sc, st_tx_pending);
2350                 STAILQ_INSERT_TAIL(&sc->sc_tx_active, data, next);
2351                 UPGT_STAT_INC(sc, st_tx_active);
2352
2353                 usbd_xfer_set_frame_data(xfer, 0, data->buf, data->buflen);
2354                 usbd_transfer_submit(xfer);
2355                 UPGT_UNLOCK(sc);
2356                 upgt_start(ifp);
2357                 UPGT_LOCK(sc);
2358                 break;
2359         default:
2360                 data = STAILQ_FIRST(&sc->sc_tx_active);
2361                 if (data == NULL)
2362                         goto setup;
2363                 if (data->ni != NULL) {
2364                         ieee80211_free_node(data->ni);
2365                         data->ni = NULL;
2366                         ifp->if_oerrors++;
2367                 }
2368                 if (error != USB_ERR_CANCELLED) {
2369                         usbd_xfer_set_stall(xfer);
2370                         goto setup;
2371                 }
2372                 break;
2373         }
2374 }
2375
2376 static device_method_t upgt_methods[] = {
2377         /* Device interface */
2378         DEVMETHOD(device_probe, upgt_match),
2379         DEVMETHOD(device_attach, upgt_attach),
2380         DEVMETHOD(device_detach, upgt_detach),
2381
2382         DEVMETHOD_END
2383 };
2384
2385 static driver_t upgt_driver = {
2386         "upgt",
2387         upgt_methods,
2388         sizeof(struct upgt_softc)
2389 };
2390
2391 static devclass_t upgt_devclass;
2392
2393 DRIVER_MODULE(if_upgt, uhub, upgt_driver, upgt_devclass, NULL, NULL);
2394 MODULE_VERSION(if_upgt, 1);
2395 MODULE_DEPEND(if_upgt, usb, 1, 1, 1);
2396 MODULE_DEPEND(if_upgt, wlan, 1, 1, 1);
2397 MODULE_DEPEND(if_upgt, upgtfw_fw, 1, 1, 1);