sys/dev/usb/wlan/if_upgt.c

   1 /*      $OpenBSD: if_upgt.c,v 1.35 2008/04/16 18:32:15 damien Exp $ */
   2 /*      $FreeBSD$ */
   3
   4 /*
   5  * Copyright (c) 2007 Marcus Glocker <mglocker@openbsd.org>
   6  *
   7  * Permission to use, copy, modify, and distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 #include <sys/param.h>
  21 #include <sys/systm.h>
  22 #include <sys/kernel.h>
  23 #include <sys/endian.h>
  24 #include <sys/firmware.h>
  25 #include <sys/linker.h>
  26 #include <sys/mbuf.h>
  27 #include <sys/malloc.h>
  28 #include <sys/module.h>
  29 #include <sys/socket.h>
  30 #include <sys/sockio.h>
  31 #include <sys/sysctl.h>
  32
  33 #include <net/if.h>
  34 #include <net/if_arp.h>
  35 #include <net/ethernet.h>
  36 #include <net/if_dl.h>
  37 #include <net/if_media.h>
  38 #include <net/if_types.h>
  39
  40 #include <sys/bus.h>
  41 #include <machine/bus.h>
  42
  43 #include <net80211/ieee80211_var.h>
  44 #include <net80211/ieee80211_phy.h>
  45 #include <net80211/ieee80211_radiotap.h>
  46 #include <net80211/ieee80211_regdomain.h>
  47
  48 #include <net/bpf.h>
  49
  50 #include <dev/usb/usb.h>
  51 #include <dev/usb/usbdi.h>
  52 #include "usbdevs.h"
  53
  54 #include <dev/usb/wlan/if_upgtvar.h>
  55
  56 /*
  57  * Driver for the USB PrismGT devices.
  58  *
  59  * For now just USB 2.0 devices with the GW3887 chipset are supported.
  60  * The driver has been written based on the firmware version 2.13.1.0_LM87.
  61  *
  62  * TODO's:
  63  * - MONITOR mode test.
  64  * - Add HOSTAP mode.
  65  * - Add IBSS mode.
  66  * - Support the USB 1.0 devices (NET2280, ISL3880, ISL3886 chipsets).
  67  *
  68  * Parts of this driver has been influenced by reading the p54u driver
  69  * written by Jean-Baptiste Note <jean-baptiste.note@m4x.org> and
  70  * Sebastien Bourdeauducq <lekernel@prism54.org>.
  71  */
  72
  73 static SYSCTL_NODE(_hw, OID_AUTO, upgt, CTLFLAG_RD, 0,
  74     "USB PrismGT GW3887 driver parameters");
  75
  76 #ifdef UPGT_DEBUG
  77 int upgt_debug = 0;
  78 SYSCTL_INT(_hw_upgt, OID_AUTO, debug, CTLFLAG_RW | CTLFLAG_TUN, &upgt_debug,
  79             0, "control debugging printfs");
  80 TUNABLE_INT("hw.upgt.debug", &upgt_debug);
  81 enum {
  82         UPGT_DEBUG_XMIT         = 0x00000001,   /* basic xmit operation */
  83         UPGT_DEBUG_RECV         = 0x00000002,   /* basic recv operation */
  84         UPGT_DEBUG_RESET        = 0x00000004,   /* reset processing */
  85         UPGT_DEBUG_INTR         = 0x00000008,   /* INTR */
  86         UPGT_DEBUG_TX_PROC      = 0x00000010,   /* tx ISR proc */
  87         UPGT_DEBUG_RX_PROC      = 0x00000020,   /* rx ISR proc */
  88         UPGT_DEBUG_STATE        = 0x00000040,   /* 802.11 state transitions */
  89         UPGT_DEBUG_STAT         = 0x00000080,   /* statistic */
  90         UPGT_DEBUG_FW           = 0x00000100,   /* firmware */
  91         UPGT_DEBUG_ANY          = 0xffffffff
  92 };
  93 #define DPRINTF(sc, m, fmt, ...) do {                           \
  94         if (sc->sc_debug & (m))                                 \
  95                 printf(fmt, __VA_ARGS__);                       \
  96 } while (0)
  97 #else
  98 #define DPRINTF(sc, m, fmt, ...) do {                           \
  99         (void) sc;                                              \
 100 } while (0)
 101 #endif
 102
 103 /*
 104  * Prototypes.
 105  */
 106 static device_probe_t upgt_match;
 107 static device_attach_t upgt_attach;
 108 static device_detach_t upgt_detach;
 109 static int      upgt_alloc_tx(struct upgt_softc *);
 110 static int      upgt_alloc_rx(struct upgt_softc *);
 111 static int      upgt_device_reset(struct upgt_softc *);
 112 static void     upgt_bulk_tx(struct upgt_softc *, struct upgt_data *);
 113 static int      upgt_fw_verify(struct upgt_softc *);
 114 static int      upgt_mem_init(struct upgt_softc *);
 115 static int      upgt_fw_load(struct upgt_softc *);
 116 static int      upgt_fw_copy(const uint8_t *, char *, int);
 117 static uint32_t upgt_crc32_le(const void *, size_t);
 118 static struct mbuf *
 119                 upgt_rxeof(struct usb_xfer *, struct upgt_data *, int *);
 120 static struct mbuf *
 121                 upgt_rx(struct upgt_softc *, uint8_t *, int, int *);
 122 static void     upgt_txeof(struct usb_xfer *, struct upgt_data *);
 123 static int      upgt_eeprom_read(struct upgt_softc *);
 124 static int      upgt_eeprom_parse(struct upgt_softc *);
 125 static void     upgt_eeprom_parse_hwrx(struct upgt_softc *, uint8_t *);
 126 static void     upgt_eeprom_parse_freq3(struct upgt_softc *, uint8_t *, int);
 127 static void     upgt_eeprom_parse_freq4(struct upgt_softc *, uint8_t *, int);
 128 static void     upgt_eeprom_parse_freq6(struct upgt_softc *, uint8_t *, int);
 129 static uint32_t upgt_chksum_le(const uint32_t *, size_t);
 130 static void     upgt_tx_done(struct upgt_softc *, uint8_t *);
 131 static void     upgt_init(void *);
 132 static void     upgt_init_locked(struct upgt_softc *);
 133 static int      upgt_ioctl(struct ifnet *, u_long, caddr_t);
 134 static void     upgt_start(struct ifnet *);
 135 static int      upgt_raw_xmit(struct ieee80211_node *, struct mbuf *,
 136                     const struct ieee80211_bpf_params *);
 137 static void     upgt_scan_start(struct ieee80211com *);
 138 static void     upgt_scan_end(struct ieee80211com *);
 139 static void     upgt_set_channel(struct ieee80211com *);
 140 static struct ieee80211vap *upgt_vap_create(struct ieee80211com *,
 141                     const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
 142                     const uint8_t [IEEE80211_ADDR_LEN],
 143                     const uint8_t [IEEE80211_ADDR_LEN]);
 144 static void     upgt_vap_delete(struct ieee80211vap *);
 145 static void     upgt_update_mcast(struct ifnet *);
 146 static uint8_t  upgt_rx_rate(struct upgt_softc *, const int);
 147 static void     upgt_set_multi(void *);
 148 static void     upgt_stop(struct upgt_softc *);
 149 static void     upgt_setup_rates(struct ieee80211vap *, struct ieee80211com *);
 150 static int      upgt_set_macfilter(struct upgt_softc *, uint8_t);
 151 static int      upgt_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 152 static void     upgt_set_chan(struct upgt_softc *, struct ieee80211_channel *);
 153 static void     upgt_set_led(struct upgt_softc *, int);
 154 static void     upgt_set_led_blink(void *);
 155 static void     upgt_get_stats(struct upgt_softc *);
 156 static void     upgt_mem_free(struct upgt_softc *, uint32_t);
 157 static uint32_t upgt_mem_alloc(struct upgt_softc *);
 158 static void     upgt_free_tx(struct upgt_softc *);
 159 static void     upgt_free_rx(struct upgt_softc *);
 160 static void     upgt_watchdog(void *);
 161 static void     upgt_abort_xfers(struct upgt_softc *);
 162 static void     upgt_abort_xfers_locked(struct upgt_softc *);
 163 static void     upgt_sysctl_node(struct upgt_softc *);
 164 static struct upgt_data *
 165                 upgt_getbuf(struct upgt_softc *);
 166 static struct upgt_data *
 167                 upgt_gettxbuf(struct upgt_softc *);
 168 static int      upgt_tx_start(struct upgt_softc *, struct mbuf *,
 169                     struct ieee80211_node *, struct upgt_data *);
 170
 171 static const char *upgt_fwname = "upgt-gw3887";
 172
 173 static const STRUCT_USB_HOST_ID upgt_devs[] = {
 174 #define UPGT_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
 175         /* version 2 devices */
 176         UPGT_DEV(ACCTON,        PRISM_GT),
 177         UPGT_DEV(BELKIN,        F5D7050),
 178         UPGT_DEV(CISCOLINKSYS,  WUSB54AG),
 179         UPGT_DEV(CONCEPTRONIC,  PRISM_GT),
 180         UPGT_DEV(DELL,          PRISM_GT_1),
 181         UPGT_DEV(DELL,          PRISM_GT_2),
 182         UPGT_DEV(FSC,           E5400),
 183         UPGT_DEV(GLOBESPAN,     PRISM_GT_1),
 184         UPGT_DEV(GLOBESPAN,     PRISM_GT_2),
 185         UPGT_DEV(NETGEAR,       WG111V2_2),
 186         UPGT_DEV(INTERSIL,      PRISM_GT),
 187         UPGT_DEV(SMC,           2862WG),
 188         UPGT_DEV(USR,           USR5422),
 189         UPGT_DEV(WISTRONNEWEB,  UR045G),
 190         UPGT_DEV(XYRATEX,       PRISM_GT_1),
 191         UPGT_DEV(XYRATEX,       PRISM_GT_2),
 192         UPGT_DEV(ZCOM,          XG703A),
 193         UPGT_DEV(ZCOM,          XM142)
 194 };
 195
 196 static usb_callback_t upgt_bulk_rx_callback;
 197 static usb_callback_t upgt_bulk_tx_callback;
 198
 199 static const struct usb_config upgt_config[UPGT_N_XFERS] = {
 200         [UPGT_BULK_TX] = {
 201                 .type = UE_BULK,
 202                 .endpoint = UE_ADDR_ANY,
 203                 .direction = UE_DIR_OUT,
 204                 .bufsize = MCLBYTES,
 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_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
 342         ic->ic_opmode = IEEE80211_M_STA;
 343         /* set device capabilities */
 344         ic->ic_caps =
 345                   IEEE80211_C_STA               /* station mode */
 346                 | IEEE80211_C_MONITOR           /* monitor mode */
 347                 | IEEE80211_C_SHPREAMBLE        /* short preamble supported */
 348                 | IEEE80211_C_SHSLOT            /* short slot time supported */
 349                 | IEEE80211_C_BGSCAN            /* capable of bg scanning */
 350                 | IEEE80211_C_WPA               /* 802.11i */
 351                 ;
 352
 353         bands = 0;
 354         setbit(&bands, IEEE80211_MODE_11B);
 355         setbit(&bands, IEEE80211_MODE_11G);
 356         ieee80211_init_channels(ic, NULL, &bands);
 357
 358         ieee80211_ifattach(ic, sc->sc_myaddr);
 359         ic->ic_raw_xmit = upgt_raw_xmit;
 360         ic->ic_scan_start = upgt_scan_start;
 361         ic->ic_scan_end = upgt_scan_end;
 362         ic->ic_set_channel = upgt_set_channel;
 363
 364         ic->ic_vap_create = upgt_vap_create;
 365         ic->ic_vap_delete = upgt_vap_delete;
 366         ic->ic_update_mcast = upgt_update_mcast;
 367
 368         ieee80211_radiotap_attach(ic,
 369             &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
 370                 UPGT_TX_RADIOTAP_PRESENT,
 371             &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
 372                 UPGT_RX_RADIOTAP_PRESENT);
 373
 374         upgt_sysctl_node(sc);
 375
 376         if (bootverbose)
 377                 ieee80211_announce(ic);
 378
 379         return (0);
 380
 381 fail5:  if_free(ifp);
 382 fail4:  usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
 383 fail3:  upgt_free_rx(sc);
 384 fail2:  upgt_free_tx(sc);
 385 fail1:  mtx_destroy(&sc->sc_mtx);
 386
 387         return (error);
 388 }
 389
 390 static void
 391 upgt_txeof(struct usb_xfer *xfer, struct upgt_data *data)
 392 {
 393         struct upgt_softc *sc = usbd_xfer_softc(xfer);
 394         struct ifnet *ifp = sc->sc_ifp;
 395         struct mbuf *m;
 396
 397         UPGT_ASSERT_LOCKED(sc);
 398
 399         /*
 400          * Do any tx complete callback.  Note this must be done before releasing
 401          * the node reference.
 402          */
 403         if (data->m) {
 404                 m = data->m;
 405                 if (m->m_flags & M_TXCB) {
 406                         /* XXX status? */
 407                         ieee80211_process_callback(data->ni, m, 0);
 408                 }
 409                 m_freem(m);
 410                 data->m = NULL;
 411         }
 412         if (data->ni) {
 413                 ieee80211_free_node(data->ni);
 414                 data->ni = NULL;
 415         }
 416         ifp->if_opackets++;
 417 }
 418
 419 static void
 420 upgt_get_stats(struct upgt_softc *sc)
 421 {
 422         struct upgt_data *data_cmd;
 423         struct upgt_lmac_mem *mem;
 424         struct upgt_lmac_stats *stats;
 425
 426         data_cmd = upgt_getbuf(sc);
 427         if (data_cmd == NULL) {
 428                 device_printf(sc->sc_dev, "%s: out of buffer.\n", __func__);
 429                 return;
 430         }
 431
 432         /*
 433          * Transmit the URB containing the CMD data.
 434          */
 435         memset(data_cmd->buf, 0, MCLBYTES);
 436
 437         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 438         mem->addr = htole32(sc->sc_memaddr_frame_start +
 439             UPGT_MEMSIZE_FRAME_HEAD);
 440
 441         stats = (struct upgt_lmac_stats *)(mem + 1);
 442
 443         stats->header1.flags = 0;
 444         stats->header1.type = UPGT_H1_TYPE_CTRL;
 445         stats->header1.len = htole16(
 446             sizeof(struct upgt_lmac_stats) - sizeof(struct upgt_lmac_header));
 447
 448         stats->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 449         stats->header2.type = htole16(UPGT_H2_TYPE_STATS);
 450         stats->header2.flags = 0;
 451
 452         data_cmd->buflen = sizeof(*mem) + sizeof(*stats);
 453
 454         mem->chksum = upgt_chksum_le((uint32_t *)stats,
 455             data_cmd->buflen - sizeof(*mem));
 456
 457         upgt_bulk_tx(sc, data_cmd);
 458 }
 459
 460 static int
 461 upgt_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 462 {
 463         struct upgt_softc *sc = ifp->if_softc;
 464         struct ieee80211com *ic = ifp->if_l2com;
 465         struct ifreq *ifr = (struct ifreq *) data;
 466         int error = 0, startall = 0;
 467
 468         switch (cmd) {
 469         case SIOCSIFFLAGS:
 470                 if (ifp->if_flags & IFF_UP) {
 471                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 472                                 if ((ifp->if_flags ^ sc->sc_if_flags) &
 473                                     (IFF_ALLMULTI | IFF_PROMISC))
 474                                         upgt_set_multi(sc);
 475                         } else {
 476                                 upgt_init(sc);
 477                                 startall = 1;
 478                         }
 479                 } else {
 480                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 481                                 upgt_stop(sc);
 482                 }
 483                 sc->sc_if_flags = ifp->if_flags;
 484                 if (startall)
 485                         ieee80211_start_all(ic);
 486                 break;
 487         case SIOCGIFMEDIA:
 488                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
 489                 break;
 490         case SIOCGIFADDR:
 491                 error = ether_ioctl(ifp, cmd, data);
 492                 break;
 493         default:
 494                 error = EINVAL;
 495                 break;
 496         }
 497         return error;
 498 }
 499
 500 static void
 501 upgt_stop_locked(struct upgt_softc *sc)
 502 {
 503         struct ifnet *ifp = sc->sc_ifp;
 504
 505         UPGT_ASSERT_LOCKED(sc);
 506
 507         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 508                 upgt_set_macfilter(sc, IEEE80211_S_INIT);
 509         upgt_abort_xfers_locked(sc);
 510 }
 511
 512 static void
 513 upgt_stop(struct upgt_softc *sc)
 514 {
 515         struct ifnet *ifp = sc->sc_ifp;
 516
 517         UPGT_LOCK(sc);
 518         upgt_stop_locked(sc);
 519         UPGT_UNLOCK(sc);
 520
 521         /* device down */
 522         sc->sc_tx_timer = 0;
 523         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
 524         sc->sc_flags &= ~UPGT_FLAG_INITDONE;
 525 }
 526
 527 static void
 528 upgt_set_led(struct upgt_softc *sc, int action)
 529 {
 530         struct upgt_data *data_cmd;
 531         struct upgt_lmac_mem *mem;
 532         struct upgt_lmac_led *led;
 533
 534         data_cmd = upgt_getbuf(sc);
 535         if (data_cmd == NULL) {
 536                 device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
 537                 return;
 538         }
 539
 540         /*
 541          * Transmit the URB containing the CMD data.
 542          */
 543         memset(data_cmd->buf, 0, MCLBYTES);
 544
 545         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 546         mem->addr = htole32(sc->sc_memaddr_frame_start +
 547             UPGT_MEMSIZE_FRAME_HEAD);
 548
 549         led = (struct upgt_lmac_led *)(mem + 1);
 550
 551         led->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 552         led->header1.type = UPGT_H1_TYPE_CTRL;
 553         led->header1.len = htole16(
 554             sizeof(struct upgt_lmac_led) -
 555             sizeof(struct upgt_lmac_header));
 556
 557         led->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 558         led->header2.type = htole16(UPGT_H2_TYPE_LED);
 559         led->header2.flags = 0;
 560
 561         switch (action) {
 562         case UPGT_LED_OFF:
 563                 led->mode = htole16(UPGT_LED_MODE_SET);
 564                 led->action_fix = 0;
 565                 led->action_tmp = htole16(UPGT_LED_ACTION_OFF);
 566                 led->action_tmp_dur = 0;
 567                 break;
 568         case UPGT_LED_ON:
 569                 led->mode = htole16(UPGT_LED_MODE_SET);
 570                 led->action_fix = 0;
 571                 led->action_tmp = htole16(UPGT_LED_ACTION_ON);
 572                 led->action_tmp_dur = 0;
 573                 break;
 574         case UPGT_LED_BLINK:
 575                 if (sc->sc_state != IEEE80211_S_RUN) {
 576                         STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 577                         return;
 578                 }
 579                 if (sc->sc_led_blink) {
 580                         /* previous blink was not finished */
 581                         STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 582                         return;
 583                 }
 584                 led->mode = htole16(UPGT_LED_MODE_SET);
 585                 led->action_fix = htole16(UPGT_LED_ACTION_OFF);
 586                 led->action_tmp = htole16(UPGT_LED_ACTION_ON);
 587                 led->action_tmp_dur = htole16(UPGT_LED_ACTION_TMP_DUR);
 588                 /* lock blink */
 589                 sc->sc_led_blink = 1;
 590                 callout_reset(&sc->sc_led_ch, hz, upgt_set_led_blink, sc);
 591                 break;
 592         default:
 593                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data_cmd, next);
 594                 return;
 595         }
 596
 597         data_cmd->buflen = sizeof(*mem) + sizeof(*led);
 598
 599         mem->chksum = upgt_chksum_le((uint32_t *)led,
 600             data_cmd->buflen - sizeof(*mem));
 601
 602         upgt_bulk_tx(sc, data_cmd);
 603 }
 604
 605 static void
 606 upgt_set_led_blink(void *arg)
 607 {
 608         struct upgt_softc *sc = arg;
 609
 610         /* blink finished, we are ready for a next one */
 611         sc->sc_led_blink = 0;
 612 }
 613
 614 static void
 615 upgt_init(void *priv)
 616 {
 617         struct upgt_softc *sc = priv;
 618         struct ifnet *ifp = sc->sc_ifp;
 619         struct ieee80211com *ic = ifp->if_l2com;
 620
 621         UPGT_LOCK(sc);
 622         upgt_init_locked(sc);
 623         UPGT_UNLOCK(sc);
 624
 625         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 626                 ieee80211_start_all(ic);                /* start all vap's */
 627 }
 628
 629 static void
 630 upgt_init_locked(struct upgt_softc *sc)
 631 {
 632         struct ifnet *ifp = sc->sc_ifp;
 633
 634         UPGT_ASSERT_LOCKED(sc);
 635
 636         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 637                 upgt_stop_locked(sc);
 638
 639         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_RX]);
 640
 641         (void)upgt_set_macfilter(sc, IEEE80211_S_SCAN);
 642
 643         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 644         ifp->if_drv_flags |= IFF_DRV_RUNNING;
 645         sc->sc_flags |= UPGT_FLAG_INITDONE;
 646
 647         callout_reset(&sc->sc_watchdog_ch, hz, upgt_watchdog, sc);
 648 }
 649
 650 static int
 651 upgt_set_macfilter(struct upgt_softc *sc, uint8_t state)
 652 {
 653         struct ifnet *ifp = sc->sc_ifp;
 654         struct ieee80211com *ic = ifp->if_l2com;
 655         struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
 656         struct ieee80211_node *ni;
 657         struct upgt_data *data_cmd;
 658         struct upgt_lmac_mem *mem;
 659         struct upgt_lmac_filter *filter;
 660         uint8_t broadcast[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 661
 662         UPGT_ASSERT_LOCKED(sc);
 663
 664         data_cmd = upgt_getbuf(sc);
 665         if (data_cmd == NULL) {
 666                 device_printf(sc->sc_dev, "out of TX buffers.\n");
 667                 return (ENOBUFS);
 668         }
 669
 670         /*
 671          * Transmit the URB containing the CMD data.
 672          */
 673         memset(data_cmd->buf, 0, MCLBYTES);
 674
 675         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 676         mem->addr = htole32(sc->sc_memaddr_frame_start +
 677             UPGT_MEMSIZE_FRAME_HEAD);
 678
 679         filter = (struct upgt_lmac_filter *)(mem + 1);
 680
 681         filter->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 682         filter->header1.type = UPGT_H1_TYPE_CTRL;
 683         filter->header1.len = htole16(
 684             sizeof(struct upgt_lmac_filter) -
 685             sizeof(struct upgt_lmac_header));
 686
 687         filter->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 688         filter->header2.type = htole16(UPGT_H2_TYPE_MACFILTER);
 689         filter->header2.flags = 0;
 690
 691         switch (state) {
 692         case IEEE80211_S_INIT:
 693                 DPRINTF(sc, UPGT_DEBUG_STATE, "%s: set MAC filter to INIT\n",
 694                     __func__);
 695                 filter->type = htole16(UPGT_FILTER_TYPE_RESET);
 696                 break;
 697         case IEEE80211_S_SCAN:
 698                 DPRINTF(sc, UPGT_DEBUG_STATE,
 699                     "set MAC filter to SCAN (bssid %s)\n",
 700                     ether_sprintf(broadcast));
 701                 filter->type = htole16(UPGT_FILTER_TYPE_NONE);
 702                 IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 703                 IEEE80211_ADDR_COPY(filter->src, broadcast);
 704                 filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1);
 705                 filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 706                 filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2);
 707                 filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 708                 filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3);
 709                 break;
 710         case IEEE80211_S_RUN:
 711                 ni = ieee80211_ref_node(vap->iv_bss);
 712                 /* XXX monitor mode isn't tested yet.  */
 713                 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
 714                         filter->type = htole16(UPGT_FILTER_TYPE_MONITOR);
 715                         IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 716                         IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid);
 717                         filter->unknown1 = htole16(UPGT_FILTER_MONITOR_UNKNOWN1);
 718                         filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 719                         filter->unknown2 = htole16(UPGT_FILTER_MONITOR_UNKNOWN2);
 720                         filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 721                         filter->unknown3 = htole16(UPGT_FILTER_MONITOR_UNKNOWN3);
 722                 } else {
 723                         DPRINTF(sc, UPGT_DEBUG_STATE,
 724                             "set MAC filter to RUN (bssid %s)\n",
 725                             ether_sprintf(ni->ni_bssid));
 726                         filter->type = htole16(UPGT_FILTER_TYPE_STA);
 727                         IEEE80211_ADDR_COPY(filter->dst, sc->sc_myaddr);
 728                         IEEE80211_ADDR_COPY(filter->src, ni->ni_bssid);
 729                         filter->unknown1 = htole16(UPGT_FILTER_UNKNOWN1);
 730                         filter->rxaddr = htole32(sc->sc_memaddr_rx_start);
 731                         filter->unknown2 = htole16(UPGT_FILTER_UNKNOWN2);
 732                         filter->rxhw = htole32(sc->sc_eeprom_hwrx);
 733                         filter->unknown3 = htole16(UPGT_FILTER_UNKNOWN3);
 734                 }
 735                 ieee80211_free_node(ni);
 736                 break;
 737         default:
 738                 device_printf(sc->sc_dev,
 739                     "MAC filter does not know that state\n");
 740                 break;
 741         }
 742
 743         data_cmd->buflen = sizeof(*mem) + sizeof(*filter);
 744
 745         mem->chksum = upgt_chksum_le((uint32_t *)filter,
 746             data_cmd->buflen - sizeof(*mem));
 747
 748         upgt_bulk_tx(sc, data_cmd);
 749
 750         return (0);
 751 }
 752
 753 static void
 754 upgt_setup_rates(struct ieee80211vap *vap, struct ieee80211com *ic)
 755 {
 756         struct ifnet *ifp = ic->ic_ifp;
 757         struct upgt_softc *sc = ifp->if_softc;
 758         const struct ieee80211_txparam *tp;
 759
 760         /*
 761          * 0x01 = OFMD6   0x10 = DS1
 762          * 0x04 = OFDM9   0x11 = DS2
 763          * 0x06 = OFDM12  0x12 = DS5
 764          * 0x07 = OFDM18  0x13 = DS11
 765          * 0x08 = OFDM24
 766          * 0x09 = OFDM36
 767          * 0x0a = OFDM48
 768          * 0x0b = OFDM54
 769          */
 770         const uint8_t rateset_auto_11b[] =
 771             { 0x13, 0x13, 0x12, 0x11, 0x11, 0x10, 0x10, 0x10 };
 772         const uint8_t rateset_auto_11g[] =
 773             { 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x04, 0x01 };
 774         const uint8_t rateset_fix_11bg[] =
 775             { 0x10, 0x11, 0x12, 0x13, 0x01, 0x04, 0x06, 0x07,
 776               0x08, 0x09, 0x0a, 0x0b };
 777
 778         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
 779
 780         /* XXX */
 781         if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) {
 782                 /*
 783                  * Automatic rate control is done by the device.
 784                  * We just pass the rateset from which the device
 785                  * will pickup a rate.
 786                  */
 787                 if (ic->ic_curmode == IEEE80211_MODE_11B)
 788                         memcpy(sc->sc_cur_rateset, rateset_auto_11b,
 789                             sizeof(sc->sc_cur_rateset));
 790                 if (ic->ic_curmode == IEEE80211_MODE_11G ||
 791                     ic->ic_curmode == IEEE80211_MODE_AUTO)
 792                         memcpy(sc->sc_cur_rateset, rateset_auto_11g,
 793                             sizeof(sc->sc_cur_rateset));
 794         } else {
 795                 /* set a fixed rate */
 796                 memset(sc->sc_cur_rateset, rateset_fix_11bg[tp->ucastrate],
 797                     sizeof(sc->sc_cur_rateset));
 798         }
 799 }
 800
 801 static void
 802 upgt_set_multi(void *arg)
 803 {
 804         struct upgt_softc *sc = arg;
 805         struct ifnet *ifp = sc->sc_ifp;
 806
 807         if (!(ifp->if_flags & IFF_UP))
 808                 return;
 809
 810         /*
 811          * XXX don't know how to set a device.  Lack of docs.  Just try to set
 812          * IFF_ALLMULTI flag here.
 813          */
 814         ifp->if_flags |= IFF_ALLMULTI;
 815 }
 816
 817 static void
 818 upgt_start(struct ifnet *ifp)
 819 {
 820         struct upgt_softc *sc = ifp->if_softc;
 821         struct upgt_data *data_tx;
 822         struct ieee80211_node *ni;
 823         struct mbuf *m;
 824
 825         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
 826                 return;
 827
 828         UPGT_LOCK(sc);
 829         for (;;) {
 830                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
 831                 if (m == NULL)
 832                         break;
 833
 834                 data_tx = upgt_gettxbuf(sc);
 835                 if (data_tx == NULL) {
 836                         IFQ_DRV_PREPEND(&ifp->if_snd, m);
 837                         break;
 838                 }
 839
 840                 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
 841                 m->m_pkthdr.rcvif = NULL;
 842
 843                 if (upgt_tx_start(sc, m, ni, data_tx) != 0) {
 844                         STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, data_tx, next);
 845                         UPGT_STAT_INC(sc, st_tx_inactive);
 846                         ieee80211_free_node(ni);
 847                         ifp->if_oerrors++;
 848                         continue;
 849                 }
 850                 sc->sc_tx_timer = 5;
 851         }
 852         UPGT_UNLOCK(sc);
 853 }
 854
 855 static int
 856 upgt_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
 857         const struct ieee80211_bpf_params *params)
 858 {
 859         struct ieee80211com *ic = ni->ni_ic;
 860         struct ifnet *ifp = ic->ic_ifp;
 861         struct upgt_softc *sc = ifp->if_softc;
 862         struct upgt_data *data_tx = NULL;
 863
 864         /* prevent management frames from being sent if we're not ready */
 865         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 866                 m_freem(m);
 867                 ieee80211_free_node(ni);
 868                 return ENETDOWN;
 869         }
 870
 871         UPGT_LOCK(sc);
 872         data_tx = upgt_gettxbuf(sc);
 873         if (data_tx == NULL) {
 874                 ieee80211_free_node(ni);
 875                 m_freem(m);
 876                 UPGT_UNLOCK(sc);
 877                 return (ENOBUFS);
 878         }
 879
 880         if (upgt_tx_start(sc, m, ni, data_tx) != 0) {
 881                 STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, data_tx, next);
 882                 UPGT_STAT_INC(sc, st_tx_inactive);
 883                 ieee80211_free_node(ni);
 884                 ifp->if_oerrors++;
 885                 UPGT_UNLOCK(sc);
 886                 return (EIO);
 887         }
 888         UPGT_UNLOCK(sc);
 889
 890         sc->sc_tx_timer = 5;
 891         return (0);
 892 }
 893
 894 static void
 895 upgt_watchdog(void *arg)
 896 {
 897         struct upgt_softc *sc = arg;
 898         struct ifnet *ifp = sc->sc_ifp;
 899
 900         if (sc->sc_tx_timer > 0) {
 901                 if (--sc->sc_tx_timer == 0) {
 902                         device_printf(sc->sc_dev, "watchdog timeout\n");
 903                         /* upgt_init(ifp); XXX needs a process context ? */
 904                         ifp->if_oerrors++;
 905                         return;
 906                 }
 907                 callout_reset(&sc->sc_watchdog_ch, hz, upgt_watchdog, sc);
 908         }
 909 }
 910
 911 static uint32_t
 912 upgt_mem_alloc(struct upgt_softc *sc)
 913 {
 914         int i;
 915
 916         for (i = 0; i < sc->sc_memory.pages; i++) {
 917                 if (sc->sc_memory.page[i].used == 0) {
 918                         sc->sc_memory.page[i].used = 1;
 919                         return (sc->sc_memory.page[i].addr);
 920                 }
 921         }
 922
 923         return (0);
 924 }
 925
 926 static void
 927 upgt_scan_start(struct ieee80211com *ic)
 928 {
 929         /* do nothing.  */
 930 }
 931
 932 static void
 933 upgt_scan_end(struct ieee80211com *ic)
 934 {
 935         /* do nothing.  */
 936 }
 937
 938 static void
 939 upgt_set_channel(struct ieee80211com *ic)
 940 {
 941         struct upgt_softc *sc = ic->ic_ifp->if_softc;
 942
 943         UPGT_LOCK(sc);
 944         upgt_set_chan(sc, ic->ic_curchan);
 945         UPGT_UNLOCK(sc);
 946 }
 947
 948 static void
 949 upgt_set_chan(struct upgt_softc *sc, struct ieee80211_channel *c)
 950 {
 951         struct ifnet *ifp = sc->sc_ifp;
 952         struct ieee80211com *ic = ifp->if_l2com;
 953         struct upgt_data *data_cmd;
 954         struct upgt_lmac_mem *mem;
 955         struct upgt_lmac_channel *chan;
 956         int channel;
 957
 958         UPGT_ASSERT_LOCKED(sc);
 959
 960         channel = ieee80211_chan2ieee(ic, c);
 961         if (channel == 0 || channel == IEEE80211_CHAN_ANY) {
 962                 /* XXX should NEVER happen */
 963                 device_printf(sc->sc_dev,
 964                     "%s: invalid channel %x\n", __func__, channel);
 965                 return;
 966         }
 967
 968         DPRINTF(sc, UPGT_DEBUG_STATE, "%s: channel %d\n", __func__, channel);
 969
 970         data_cmd = upgt_getbuf(sc);
 971         if (data_cmd == NULL) {
 972                 device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
 973                 return;
 974         }
 975         /*
 976          * Transmit the URB containing the CMD data.
 977          */
 978         memset(data_cmd->buf, 0, MCLBYTES);
 979
 980         mem = (struct upgt_lmac_mem *)data_cmd->buf;
 981         mem->addr = htole32(sc->sc_memaddr_frame_start +
 982             UPGT_MEMSIZE_FRAME_HEAD);
 983
 984         chan = (struct upgt_lmac_channel *)(mem + 1);
 985
 986         chan->header1.flags = UPGT_H1_FLAGS_TX_NO_CALLBACK;
 987         chan->header1.type = UPGT_H1_TYPE_CTRL;
 988         chan->header1.len = htole16(
 989             sizeof(struct upgt_lmac_channel) - sizeof(struct upgt_lmac_header));
 990
 991         chan->header2.reqid = htole32(sc->sc_memaddr_frame_start);
 992         chan->header2.type = htole16(UPGT_H2_TYPE_CHANNEL);
 993         chan->header2.flags = 0;
 994
 995         chan->unknown1 = htole16(UPGT_CHANNEL_UNKNOWN1);
 996         chan->unknown2 = htole16(UPGT_CHANNEL_UNKNOWN2);
 997         chan->freq6 = sc->sc_eeprom_freq6[channel];
 998         chan->settings = sc->sc_eeprom_freq6_settings;
 999         chan->unknown3 = UPGT_CHANNEL_UNKNOWN3;
1000
1001         memcpy(chan->freq3_1, &sc->sc_eeprom_freq3[channel].data,
1002             sizeof(chan->freq3_1));
1003         memcpy(chan->freq4, &sc->sc_eeprom_freq4[channel],
1004             sizeof(sc->sc_eeprom_freq4[channel]));
1005         memcpy(chan->freq3_2, &sc->sc_eeprom_freq3[channel].data,
1006             sizeof(chan->freq3_2));
1007
1008         data_cmd->buflen = sizeof(*mem) + sizeof(*chan);
1009
1010         mem->chksum = upgt_chksum_le((uint32_t *)chan,
1011             data_cmd->buflen - sizeof(*mem));
1012
1013         upgt_bulk_tx(sc, data_cmd);
1014 }
1015
1016 static struct ieee80211vap *
1017 upgt_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
1018     enum ieee80211_opmode opmode, int flags,
1019     const uint8_t bssid[IEEE80211_ADDR_LEN],
1020     const uint8_t mac[IEEE80211_ADDR_LEN])
1021 {
1022         struct upgt_vap *uvp;
1023         struct ieee80211vap *vap;
1024
1025         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
1026                 return NULL;
1027         uvp = (struct upgt_vap *) malloc(sizeof(struct upgt_vap),
1028             M_80211_VAP, M_NOWAIT | M_ZERO);
1029         if (uvp == NULL)
1030                 return NULL;
1031         vap = &uvp->vap;
1032         /* enable s/w bmiss handling for sta mode */
1033         ieee80211_vap_setup(ic, vap, name, unit, opmode,
1034             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
1035
1036         /* override state transition machine */
1037         uvp->newstate = vap->iv_newstate;
1038         vap->iv_newstate = upgt_newstate;
1039
1040         /* setup device rates */
1041         upgt_setup_rates(vap, ic);
1042
1043         /* complete setup */
1044         ieee80211_vap_attach(vap, ieee80211_media_change,
1045             ieee80211_media_status);
1046         ic->ic_opmode = opmode;
1047         return vap;
1048 }
1049
1050 static int
1051 upgt_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1052 {
1053         struct upgt_vap *uvp = UPGT_VAP(vap);
1054         struct ieee80211com *ic = vap->iv_ic;
1055         struct upgt_softc *sc = ic->ic_ifp->if_softc;
1056
1057         /* do it in a process context */
1058         sc->sc_state = nstate;
1059
1060         IEEE80211_UNLOCK(ic);
1061         UPGT_LOCK(sc);
1062         callout_stop(&sc->sc_led_ch);
1063         callout_stop(&sc->sc_watchdog_ch);
1064
1065         switch (nstate) {
1066         case IEEE80211_S_INIT:
1067                 /* do not accept any frames if the device is down */
1068                 (void)upgt_set_macfilter(sc, sc->sc_state);
1069                 upgt_set_led(sc, UPGT_LED_OFF);
1070                 break;
1071         case IEEE80211_S_SCAN:
1072                 upgt_set_chan(sc, ic->ic_curchan);
1073                 break;
1074         case IEEE80211_S_AUTH:
1075                 upgt_set_chan(sc, ic->ic_curchan);
1076                 break;
1077         case IEEE80211_S_ASSOC:
1078                 break;
1079         case IEEE80211_S_RUN:
1080                 upgt_set_macfilter(sc, sc->sc_state);
1081                 upgt_set_led(sc, UPGT_LED_ON);
1082                 break;
1083         default:
1084                 break;
1085         }
1086         UPGT_UNLOCK(sc);
1087         IEEE80211_LOCK(ic);
1088         return (uvp->newstate(vap, nstate, arg));
1089 }
1090
1091 static void
1092 upgt_vap_delete(struct ieee80211vap *vap)
1093 {
1094         struct upgt_vap *uvp = UPGT_VAP(vap);
1095
1096         ieee80211_vap_detach(vap);
1097         free(uvp, M_80211_VAP);
1098 }
1099
1100 static void
1101 upgt_update_mcast(struct ifnet *ifp)
1102 {
1103         struct upgt_softc *sc = ifp->if_softc;
1104
1105         upgt_set_multi(sc);
1106 }
1107
1108 static int
1109 upgt_eeprom_parse(struct upgt_softc *sc)
1110 {
1111         struct upgt_eeprom_header *eeprom_header;
1112         struct upgt_eeprom_option *eeprom_option;
1113         uint16_t option_len;
1114         uint16_t option_type;
1115         uint16_t preamble_len;
1116         int option_end = 0;
1117
1118         /* calculate eeprom options start offset */
1119         eeprom_header = (struct upgt_eeprom_header *)sc->sc_eeprom;
1120         preamble_len = le16toh(eeprom_header->preamble_len);
1121         eeprom_option = (struct upgt_eeprom_option *)(sc->sc_eeprom +
1122             (sizeof(struct upgt_eeprom_header) + preamble_len));
1123
1124         while (!option_end) {
1125
1126                 /* sanity check */
1127                 if (eeprom_option >= (struct upgt_eeprom_option *)
1128                     (sc->sc_eeprom + UPGT_EEPROM_SIZE)) {
1129                         return (EINVAL);
1130                 }
1131
1132                 /* the eeprom option length is stored in words */
1133                 option_len =
1134                     (le16toh(eeprom_option->len) - 1) * sizeof(uint16_t);
1135                 option_type =
1136                     le16toh(eeprom_option->type);
1137
1138                 /* sanity check */
1139                 if (option_len == 0 || option_len >= UPGT_EEPROM_SIZE)
1140                         return (EINVAL);
1141
1142                 switch (option_type) {
1143                 case UPGT_EEPROM_TYPE_NAME:
1144                         DPRINTF(sc, UPGT_DEBUG_FW,
1145                             "EEPROM name len=%d\n", option_len);
1146                         break;
1147                 case UPGT_EEPROM_TYPE_SERIAL:
1148                         DPRINTF(sc, UPGT_DEBUG_FW,
1149                             "EEPROM serial len=%d\n", option_len);
1150                         break;
1151                 case UPGT_EEPROM_TYPE_MAC:
1152                         DPRINTF(sc, UPGT_DEBUG_FW,
1153                             "EEPROM mac len=%d\n", option_len);
1154
1155                         IEEE80211_ADDR_COPY(sc->sc_myaddr, eeprom_option->data);
1156                         break;
1157                 case UPGT_EEPROM_TYPE_HWRX:
1158                         DPRINTF(sc, UPGT_DEBUG_FW,
1159                             "EEPROM hwrx len=%d\n", option_len);
1160
1161                         upgt_eeprom_parse_hwrx(sc, eeprom_option->data);
1162                         break;
1163                 case UPGT_EEPROM_TYPE_CHIP:
1164                         DPRINTF(sc, UPGT_DEBUG_FW,
1165                             "EEPROM chip len=%d\n", option_len);
1166                         break;
1167                 case UPGT_EEPROM_TYPE_FREQ3:
1168                         DPRINTF(sc, UPGT_DEBUG_FW,
1169                             "EEPROM freq3 len=%d\n", option_len);
1170
1171                         upgt_eeprom_parse_freq3(sc, eeprom_option->data,
1172                             option_len);
1173                         break;
1174                 case UPGT_EEPROM_TYPE_FREQ4:
1175                         DPRINTF(sc, UPGT_DEBUG_FW,
1176                             "EEPROM freq4 len=%d\n", option_len);
1177
1178                         upgt_eeprom_parse_freq4(sc, eeprom_option->data,
1179                             option_len);
1180                         break;
1181                 case UPGT_EEPROM_TYPE_FREQ5:
1182                         DPRINTF(sc, UPGT_DEBUG_FW,
1183                             "EEPROM freq5 len=%d\n", option_len);
1184                         break;
1185                 case UPGT_EEPROM_TYPE_FREQ6:
1186                         DPRINTF(sc, UPGT_DEBUG_FW,
1187                             "EEPROM freq6 len=%d\n", option_len);
1188
1189                         upgt_eeprom_parse_freq6(sc, eeprom_option->data,
1190                             option_len);
1191                         break;
1192                 case UPGT_EEPROM_TYPE_END:
1193                         DPRINTF(sc, UPGT_DEBUG_FW,
1194                             "EEPROM end len=%d\n", option_len);
1195                         option_end = 1;
1196                         break;
1197                 case UPGT_EEPROM_TYPE_OFF:
1198                         DPRINTF(sc, UPGT_DEBUG_FW,
1199                             "%s: EEPROM off without end option\n", __func__);
1200                         return (EIO);
1201                 default:
1202                         DPRINTF(sc, UPGT_DEBUG_FW,
1203                             "EEPROM unknown type 0x%04x len=%d\n",
1204                             option_type, option_len);
1205                         break;
1206                 }
1207
1208                 /* jump to next EEPROM option */
1209                 eeprom_option = (struct upgt_eeprom_option *)
1210                     (eeprom_option->data + option_len);
1211         }
1212         return (0);
1213 }
1214
1215 static void
1216 upgt_eeprom_parse_freq3(struct upgt_softc *sc, uint8_t *data, int len)
1217 {
1218         struct upgt_eeprom_freq3_header *freq3_header;
1219         struct upgt_lmac_freq3 *freq3;
1220         int i;
1221         int elements;
1222         int flags;
1223         unsigned channel;
1224
1225         freq3_header = (struct upgt_eeprom_freq3_header *)data;
1226         freq3 = (struct upgt_lmac_freq3 *)(freq3_header + 1);
1227
1228         flags = freq3_header->flags;
1229         elements = freq3_header->elements;
1230
1231         DPRINTF(sc, UPGT_DEBUG_FW, "flags=0x%02x elements=%d\n",
1232             flags, elements);
1233
1234         if (elements >= (int)(UPGT_EEPROM_SIZE / sizeof(freq3[0])))
1235                 return;
1236
1237         for (i = 0; i < elements; i++) {
1238                 channel = ieee80211_mhz2ieee(le16toh(freq3[i].freq), 0);
1239                 if (channel >= IEEE80211_CHAN_MAX)
1240                         continue;
1241
1242                 sc->sc_eeprom_freq3[channel] = freq3[i];
1243
1244                 DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
1245                     le16toh(sc->sc_eeprom_freq3[channel].freq), channel);
1246         }
1247 }
1248
1249 void
1250 upgt_eeprom_parse_freq4(struct upgt_softc *sc, uint8_t *data, int len)
1251 {
1252         struct upgt_eeprom_freq4_header *freq4_header;
1253         struct upgt_eeprom_freq4_1 *freq4_1;
1254         struct upgt_eeprom_freq4_2 *freq4_2;
1255         int i;
1256         int j;
1257         int elements;
1258         int settings;
1259         int flags;
1260         unsigned channel;
1261
1262         freq4_header = (struct upgt_eeprom_freq4_header *)data;
1263         freq4_1 = (struct upgt_eeprom_freq4_1 *)(freq4_header + 1);
1264         flags = freq4_header->flags;
1265         elements = freq4_header->elements;
1266         settings = freq4_header->settings;
1267
1268         /* we need this value later */
1269         sc->sc_eeprom_freq6_settings = freq4_header->settings;
1270
1271         DPRINTF(sc, UPGT_DEBUG_FW, "flags=0x%02x elements=%d settings=%d\n",
1272             flags, elements, settings);
1273
1274         if (elements >= (int)(UPGT_EEPROM_SIZE / sizeof(freq4_1[0])))
1275                 return;
1276
1277         for (i = 0; i < elements; i++) {
1278                 channel = ieee80211_mhz2ieee(le16toh(freq4_1[i].freq), 0);
1279                 if (channel >= IEEE80211_CHAN_MAX)
1280                         continue;
1281
1282                 freq4_2 = (struct upgt_eeprom_freq4_2 *)freq4_1[i].data;
1283                 for (j = 0; j < settings; j++) {
1284                         sc->sc_eeprom_freq4[channel][j].cmd = freq4_2[j];
1285                         sc->sc_eeprom_freq4[channel][j].pad = 0;
1286                 }
1287
1288                 DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
1289                     le16toh(freq4_1[i].freq), channel);
1290         }
1291 }
1292
1293 void
1294 upgt_eeprom_parse_freq6(struct upgt_softc *sc, uint8_t *data, int len)
1295 {
1296         struct upgt_lmac_freq6 *freq6;
1297         int i;
1298         int elements;
1299         unsigned channel;
1300
1301         freq6 = (struct upgt_lmac_freq6 *)data;
1302         elements = len / sizeof(struct upgt_lmac_freq6);
1303
1304         DPRINTF(sc, UPGT_DEBUG_FW, "elements=%d\n", elements);
1305
1306         if (elements >= (int)(UPGT_EEPROM_SIZE / sizeof(freq6[0])))
1307                 return;
1308
1309         for (i = 0; i < elements; i++) {
1310                 channel = ieee80211_mhz2ieee(le16toh(freq6[i].freq), 0);
1311                 if (channel >= IEEE80211_CHAN_MAX)
1312                         continue;
1313
1314                 sc->sc_eeprom_freq6[channel] = freq6[i];
1315
1316                 DPRINTF(sc, UPGT_DEBUG_FW, "frequence=%d, channel=%d\n",
1317                     le16toh(sc->sc_eeprom_freq6[channel].freq), channel);
1318         }
1319 }
1320
1321 static void
1322 upgt_eeprom_parse_hwrx(struct upgt_softc *sc, uint8_t *data)
1323 {
1324         struct upgt_eeprom_option_hwrx *option_hwrx;
1325
1326         option_hwrx = (struct upgt_eeprom_option_hwrx *)data;
1327
1328         sc->sc_eeprom_hwrx = option_hwrx->rxfilter - UPGT_EEPROM_RX_CONST;
1329
1330         DPRINTF(sc, UPGT_DEBUG_FW, "hwrx option value=0x%04x\n",
1331             sc->sc_eeprom_hwrx);
1332 }
1333
1334 static int
1335 upgt_eeprom_read(struct upgt_softc *sc)
1336 {
1337         struct upgt_data *data_cmd;
1338         struct upgt_lmac_mem *mem;
1339         struct upgt_lmac_eeprom *eeprom;
1340         int block, error, offset;
1341
1342         UPGT_LOCK(sc);
1343         usb_pause_mtx(&sc->sc_mtx, 100);
1344
1345         offset = 0;
1346         block = UPGT_EEPROM_BLOCK_SIZE;
1347         while (offset < UPGT_EEPROM_SIZE) {
1348                 DPRINTF(sc, UPGT_DEBUG_FW,
1349                     "request EEPROM block (offset=%d, len=%d)\n", offset, block);
1350
1351                 data_cmd = upgt_getbuf(sc);
1352                 if (data_cmd == NULL) {
1353                         UPGT_UNLOCK(sc);
1354                         return (ENOBUFS);
1355                 }
1356
1357                 /*
1358                  * Transmit the URB containing the CMD data.
1359                  */
1360                 memset(data_cmd->buf, 0, MCLBYTES);
1361
1362                 mem = (struct upgt_lmac_mem *)data_cmd->buf;
1363                 mem->addr = htole32(sc->sc_memaddr_frame_start +
1364                     UPGT_MEMSIZE_FRAME_HEAD);
1365
1366                 eeprom = (struct upgt_lmac_eeprom *)(mem + 1);
1367                 eeprom->header1.flags = 0;
1368                 eeprom->header1.type = UPGT_H1_TYPE_CTRL;
1369                 eeprom->header1.len = htole16((
1370                     sizeof(struct upgt_lmac_eeprom) -
1371                     sizeof(struct upgt_lmac_header)) + block);
1372
1373                 eeprom->header2.reqid = htole32(sc->sc_memaddr_frame_start);
1374                 eeprom->header2.type = htole16(UPGT_H2_TYPE_EEPROM);
1375                 eeprom->header2.flags = 0;
1376
1377                 eeprom->offset = htole16(offset);
1378                 eeprom->len = htole16(block);
1379
1380                 data_cmd->buflen = sizeof(*mem) + sizeof(*eeprom) + block;
1381
1382                 mem->chksum = upgt_chksum_le((uint32_t *)eeprom,
1383                     data_cmd->buflen - sizeof(*mem));
1384                 upgt_bulk_tx(sc, data_cmd);
1385
1386                 error = mtx_sleep(sc, &sc->sc_mtx, 0, "eeprom_request", hz);
1387                 if (error != 0) {
1388                         device_printf(sc->sc_dev,
1389                             "timeout while waiting for EEPROM data\n");
1390                         UPGT_UNLOCK(sc);
1391                         return (EIO);
1392                 }
1393
1394                 offset += block;
1395                 if (UPGT_EEPROM_SIZE - offset < block)
1396                         block = UPGT_EEPROM_SIZE - offset;
1397         }
1398
1399         UPGT_UNLOCK(sc);
1400         return (0);
1401 }
1402
1403 /*
1404  * When a rx data came in the function returns a mbuf and a rssi values.
1405  */
1406 static struct mbuf *
1407 upgt_rxeof(struct usb_xfer *xfer, struct upgt_data *data, int *rssi)
1408 {
1409         struct mbuf *m = NULL;
1410         struct upgt_softc *sc = usbd_xfer_softc(xfer);
1411         struct upgt_lmac_header *header;
1412         struct upgt_lmac_eeprom *eeprom;
1413         uint8_t h1_type;
1414         uint16_t h2_type;
1415         int actlen, sumlen;
1416
1417         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
1418
1419         UPGT_ASSERT_LOCKED(sc);
1420
1421         if (actlen < 1)
1422                 return (NULL);
1423
1424         /* Check only at the very beginning.  */
1425         if (!(sc->sc_flags & UPGT_FLAG_FWLOADED) &&
1426             (memcmp(data->buf, "OK", 2) == 0)) {
1427                 sc->sc_flags |= UPGT_FLAG_FWLOADED;
1428                 wakeup_one(sc);
1429                 return (NULL);
1430         }
1431
1432         if (actlen < (int)UPGT_RX_MINSZ)
1433                 return (NULL);
1434
1435         /*
1436          * Check what type of frame came in.
1437          */
1438         header = (struct upgt_lmac_header *)(data->buf + 4);
1439
1440         h1_type = header->header1.type;
1441         h2_type = le16toh(header->header2.type);
1442
1443         if (h1_type == UPGT_H1_TYPE_CTRL && h2_type == UPGT_H2_TYPE_EEPROM) {
1444                 eeprom = (struct upgt_lmac_eeprom *)(data->buf + 4);
1445                 uint16_t eeprom_offset = le16toh(eeprom->offset);
1446                 uint16_t eeprom_len = le16toh(eeprom->len);
1447
1448                 DPRINTF(sc, UPGT_DEBUG_FW,
1449                     "received EEPROM block (offset=%d, len=%d)\n",
1450                     eeprom_offset, eeprom_len);
1451
1452                 memcpy(sc->sc_eeprom + eeprom_offset,
1453                     data->buf + sizeof(struct upgt_lmac_eeprom) + 4,
1454                     eeprom_len);
1455
1456                 /* EEPROM data has arrived in time, wakeup.  */
1457                 wakeup(sc);
1458         } else if (h1_type == UPGT_H1_TYPE_CTRL &&
1459             h2_type == UPGT_H2_TYPE_TX_DONE) {
1460                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: received 802.11 TX done\n",
1461                     __func__);
1462                 upgt_tx_done(sc, data->buf + 4);
1463         } else if (h1_type == UPGT_H1_TYPE_RX_DATA ||
1464             h1_type == UPGT_H1_TYPE_RX_DATA_MGMT) {
1465                 DPRINTF(sc, UPGT_DEBUG_RECV, "%s: received 802.11 RX data\n",
1466                     __func__);
1467                 m = upgt_rx(sc, data->buf + 4, le16toh(header->header1.len),
1468                     rssi);
1469         } else if (h1_type == UPGT_H1_TYPE_CTRL &&
1470             h2_type == UPGT_H2_TYPE_STATS) {
1471                 DPRINTF(sc, UPGT_DEBUG_STAT, "%s: received statistic data\n",
1472                     __func__);
1473                 /* TODO: what could we do with the statistic data? */
1474         } else {
1475                 /* ignore unknown frame types */
1476                 DPRINTF(sc, UPGT_DEBUG_INTR,
1477                     "received unknown frame type 0x%02x\n",
1478                     header->header1.type);
1479         }
1480         return (m);
1481 }
1482
1483 /*
1484  * The firmware awaits a checksum for each frame we send to it.
1485  * The algorithm used therefor is uncommon but somehow similar to CRC32.
1486  */
1487 static uint32_t
1488 upgt_chksum_le(const uint32_t *buf, size_t size)
1489 {
1490         size_t i;
1491         uint32_t crc = 0;
1492
1493         for (i = 0; i < size; i += sizeof(uint32_t)) {
1494                 crc = htole32(crc ^ *buf++);
1495                 crc = htole32((crc >> 5) ^ (crc << 3));
1496         }
1497
1498         return (crc);
1499 }
1500
1501 static struct mbuf *
1502 upgt_rx(struct upgt_softc *sc, uint8_t *data, int pkglen, int *rssi)
1503 {
1504         struct ifnet *ifp = sc->sc_ifp;
1505         struct ieee80211com *ic = ifp->if_l2com;
1506         struct upgt_lmac_rx_desc *rxdesc;
1507         struct mbuf *m;
1508
1509         /*
1510          * don't pass packets to the ieee80211 framework if the driver isn't
1511          * RUNNING.
1512          */
1513         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
1514                 return (NULL);
1515
1516         /* access RX packet descriptor */
1517         rxdesc = (struct upgt_lmac_rx_desc *)data;
1518
1519         /* create mbuf which is suitable for strict alignment archs */
1520         KASSERT((pkglen + ETHER_ALIGN) < MCLBYTES,
1521             ("A current mbuf storage is small (%d)", pkglen + ETHER_ALIGN));
1522         m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1523         if (m == NULL) {
1524                 device_printf(sc->sc_dev, "could not create RX mbuf\n");
1525                 return (NULL);
1526         }
1527         m_adj(m, ETHER_ALIGN);
1528         memcpy(mtod(m, char *), rxdesc->data, pkglen);
1529         /* trim FCS */
1530         m->m_len = m->m_pkthdr.len = pkglen - IEEE80211_CRC_LEN;
1531         m->m_pkthdr.rcvif = ifp;
1532
1533         if (ieee80211_radiotap_active(ic)) {
1534                 struct upgt_rx_radiotap_header *tap = &sc->sc_rxtap;
1535
1536                 tap->wr_flags = 0;
1537                 tap->wr_rate = upgt_rx_rate(sc, rxdesc->rate);
1538                 tap->wr_antsignal = rxdesc->rssi;
1539         }
1540         ifp->if_ipackets++;
1541
1542         DPRINTF(sc, UPGT_DEBUG_RX_PROC, "%s: RX done\n", __func__);
1543         *rssi = rxdesc->rssi;
1544         return (m);
1545 }
1546
1547 static uint8_t
1548 upgt_rx_rate(struct upgt_softc *sc, const int rate)
1549 {
1550         struct ifnet *ifp = sc->sc_ifp;
1551         struct ieee80211com *ic = ifp->if_l2com;
1552         static const uint8_t cck_upgt2rate[4] = { 2, 4, 11, 22 };
1553         static const uint8_t ofdm_upgt2rate[12] =
1554             { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 };
1555
1556         if (ic->ic_curmode == IEEE80211_MODE_11B &&
1557             !(rate < 0 || rate > 3))
1558                 return cck_upgt2rate[rate & 0xf];
1559
1560         if (ic->ic_curmode == IEEE80211_MODE_11G &&
1561             !(rate < 0 || rate > 11))
1562                 return ofdm_upgt2rate[rate & 0xf];
1563
1564         return (0);
1565 }
1566
1567 static void
1568 upgt_tx_done(struct upgt_softc *sc, uint8_t *data)
1569 {
1570         struct ifnet *ifp = sc->sc_ifp;
1571         struct upgt_lmac_tx_done_desc *desc;
1572         int i, freed = 0;
1573
1574         UPGT_ASSERT_LOCKED(sc);
1575
1576         desc = (struct upgt_lmac_tx_done_desc *)data;
1577
1578         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
1579                 struct upgt_data *data_tx = &sc->sc_tx_data[i];
1580
1581                 if (data_tx->addr == le32toh(desc->header2.reqid)) {
1582                         upgt_mem_free(sc, data_tx->addr);
1583                         data_tx->ni = NULL;
1584                         data_tx->addr = 0;
1585                         data_tx->m = NULL;
1586                         data_tx->use = 0;
1587
1588                         DPRINTF(sc, UPGT_DEBUG_TX_PROC,
1589                             "TX done: memaddr=0x%08x, status=0x%04x, rssi=%d, ",
1590                             le32toh(desc->header2.reqid),
1591                             le16toh(desc->status), le16toh(desc->rssi));
1592                         DPRINTF(sc, UPGT_DEBUG_TX_PROC, "seq=%d\n",
1593                             le16toh(desc->seq));
1594
1595                         freed++;
1596                 }
1597         }
1598
1599         if (freed != 0) {
1600                 sc->sc_tx_timer = 0;
1601                 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1602                 UPGT_UNLOCK(sc);
1603                 upgt_start(ifp);
1604                 UPGT_LOCK(sc);
1605         }
1606 }
1607
1608 static void
1609 upgt_mem_free(struct upgt_softc *sc, uint32_t addr)
1610 {
1611         int i;
1612
1613         for (i = 0; i < sc->sc_memory.pages; i++) {
1614                 if (sc->sc_memory.page[i].addr == addr) {
1615                         sc->sc_memory.page[i].used = 0;
1616                         return;
1617                 }
1618         }
1619
1620         device_printf(sc->sc_dev,
1621             "could not free memory address 0x%08x\n", addr);
1622 }
1623
1624 static int
1625 upgt_fw_load(struct upgt_softc *sc)
1626 {
1627         const struct firmware *fw;
1628         struct upgt_data *data_cmd;
1629         struct upgt_fw_x2_header *x2;
1630         char start_fwload_cmd[] = { 0x3c, 0x0d };
1631         int error = 0;
1632         size_t offset;
1633         int bsize;
1634         int n;
1635         uint32_t crc32;
1636
1637         fw = firmware_get(upgt_fwname);
1638         if (fw == NULL) {
1639                 device_printf(sc->sc_dev, "could not read microcode %s\n",
1640                     upgt_fwname);
1641                 return (EIO);
1642         }
1643
1644         UPGT_LOCK(sc);
1645
1646         /* send firmware start load command */
1647         data_cmd = upgt_getbuf(sc);
1648         if (data_cmd == NULL) {
1649                 error = ENOBUFS;
1650                 goto fail;
1651         }
1652         data_cmd->buflen = sizeof(start_fwload_cmd);
1653         memcpy(data_cmd->buf, start_fwload_cmd, data_cmd->buflen);
1654         upgt_bulk_tx(sc, data_cmd);
1655
1656         /* send X2 header */
1657         data_cmd = upgt_getbuf(sc);
1658         if (data_cmd == NULL) {
1659                 error = ENOBUFS;
1660                 goto fail;
1661         }
1662         data_cmd->buflen = sizeof(struct upgt_fw_x2_header);
1663         x2 = (struct upgt_fw_x2_header *)data_cmd->buf;
1664         memcpy(x2->signature, UPGT_X2_SIGNATURE, UPGT_X2_SIGNATURE_SIZE);
1665         x2->startaddr = htole32(UPGT_MEMADDR_FIRMWARE_START);
1666         x2->len = htole32(fw->datasize);
1667         x2->crc = upgt_crc32_le((uint8_t *)data_cmd->buf +
1668             UPGT_X2_SIGNATURE_SIZE,
1669             sizeof(struct upgt_fw_x2_header) - UPGT_X2_SIGNATURE_SIZE -
1670             sizeof(uint32_t));
1671         upgt_bulk_tx(sc, data_cmd);
1672
1673         /* download firmware */
1674         for (offset = 0; offset < fw->datasize; offset += bsize) {
1675                 if (fw->datasize - offset > UPGT_FW_BLOCK_SIZE)
1676                         bsize = UPGT_FW_BLOCK_SIZE;
1677                 else
1678                         bsize = fw->datasize - offset;
1679
1680                 data_cmd = upgt_getbuf(sc);
1681                 if (data_cmd == NULL) {
1682                         error = ENOBUFS;
1683                         goto fail;
1684                 }
1685                 n = upgt_fw_copy((const uint8_t *)fw->data + offset,
1686                     data_cmd->buf, bsize);
1687                 data_cmd->buflen = bsize;
1688                 upgt_bulk_tx(sc, data_cmd);
1689
1690                 DPRINTF(sc, UPGT_DEBUG_FW, "FW offset=%d, read=%d, sent=%d\n",
1691                     offset, n, bsize);
1692                 bsize = n;
1693         }
1694         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware downloaded\n", __func__);
1695
1696         /* load firmware */
1697         data_cmd = upgt_getbuf(sc);
1698         if (data_cmd == NULL) {
1699                 error = ENOBUFS;
1700                 goto fail;
1701         }
1702         crc32 = upgt_crc32_le(fw->data, fw->datasize);
1703         *((uint32_t *)(data_cmd->buf)    ) = crc32;
1704         *((uint8_t  *)(data_cmd->buf) + 4) = 'g';
1705         *((uint8_t  *)(data_cmd->buf) + 5) = '\r';
1706         data_cmd->buflen = 6;
1707         upgt_bulk_tx(sc, data_cmd);
1708
1709         /* waiting 'OK' response.  */
1710         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_RX]);
1711         error = mtx_sleep(sc, &sc->sc_mtx, 0, "upgtfw", 2 * hz);
1712         if (error != 0) {
1713                 device_printf(sc->sc_dev, "firmware load failed\n");
1714                 error = EIO;
1715         }
1716
1717         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware loaded\n", __func__);
1718 fail:
1719         UPGT_UNLOCK(sc);
1720         firmware_put(fw, FIRMWARE_UNLOAD);
1721         return (error);
1722 }
1723
1724 static uint32_t
1725 upgt_crc32_le(const void *buf, size_t size)
1726 {
1727         uint32_t crc;
1728
1729         crc = ether_crc32_le(buf, size);
1730
1731         /* apply final XOR value as common for CRC-32 */
1732         crc = htole32(crc ^ 0xffffffffU);
1733
1734         return (crc);
1735 }
1736
1737 /*
1738  * While copying the version 2 firmware, we need to replace two characters:
1739  *
1740  * 0x7e -> 0x7d 0x5e
1741  * 0x7d -> 0x7d 0x5d
1742  */
1743 static int
1744 upgt_fw_copy(const uint8_t *src, char *dst, int size)
1745 {
1746         int i, j;
1747
1748         for (i = 0, j = 0; i < size && j < size; i++) {
1749                 switch (src[i]) {
1750                 case 0x7e:
1751                         dst[j] = 0x7d;
1752                         j++;
1753                         dst[j] = 0x5e;
1754                         j++;
1755                         break;
1756                 case 0x7d:
1757                         dst[j] = 0x7d;
1758                         j++;
1759                         dst[j] = 0x5d;
1760                         j++;
1761                         break;
1762                 default:
1763                         dst[j] = src[i];
1764                         j++;
1765                         break;
1766                 }
1767         }
1768
1769         return (i);
1770 }
1771
1772 static int
1773 upgt_mem_init(struct upgt_softc *sc)
1774 {
1775         int i;
1776
1777         for (i = 0; i < UPGT_MEMORY_MAX_PAGES; i++) {
1778                 sc->sc_memory.page[i].used = 0;
1779
1780                 if (i == 0) {
1781                         /*
1782                          * The first memory page is always reserved for
1783                          * command data.
1784                          */
1785                         sc->sc_memory.page[i].addr =
1786                             sc->sc_memaddr_frame_start + MCLBYTES;
1787                 } else {
1788                         sc->sc_memory.page[i].addr =
1789                             sc->sc_memory.page[i - 1].addr + MCLBYTES;
1790                 }
1791
1792                 if (sc->sc_memory.page[i].addr + MCLBYTES >=
1793                     sc->sc_memaddr_frame_end)
1794                         break;
1795
1796                 DPRINTF(sc, UPGT_DEBUG_FW, "memory address page %d=0x%08x\n",
1797                     i, sc->sc_memory.page[i].addr);
1798         }
1799
1800         sc->sc_memory.pages = i;
1801
1802         DPRINTF(sc, UPGT_DEBUG_FW, "memory pages=%d\n", sc->sc_memory.pages);
1803         return (0);
1804 }
1805
1806 static int
1807 upgt_fw_verify(struct upgt_softc *sc)
1808 {
1809         const struct firmware *fw;
1810         const struct upgt_fw_bra_option *bra_opt;
1811         const struct upgt_fw_bra_descr *descr;
1812         const uint8_t *p;
1813         const uint32_t *uc;
1814         uint32_t bra_option_type, bra_option_len;
1815         size_t offset;
1816         int bra_end = 0;
1817         int error = 0;
1818
1819         fw = firmware_get(upgt_fwname);
1820         if (fw == NULL) {
1821                 device_printf(sc->sc_dev, "could not read microcode %s\n",
1822                     upgt_fwname);
1823                 return EIO;
1824         }
1825
1826         /*
1827          * Seek to beginning of Boot Record Area (BRA).
1828          */
1829         for (offset = 0; offset < fw->datasize; offset += sizeof(*uc)) {
1830                 uc = (const uint32_t *)((const uint8_t *)fw->data + offset);
1831                 if (*uc == 0)
1832                         break;
1833         }
1834         for (; offset < fw->datasize; offset += sizeof(*uc)) {
1835                 uc = (const uint32_t *)((const uint8_t *)fw->data + offset);
1836                 if (*uc != 0)
1837                         break;
1838         }
1839         if (offset == fw->datasize) {
1840                 device_printf(sc->sc_dev,
1841                     "firmware Boot Record Area not found\n");
1842                 error = EIO;
1843                 goto fail;
1844         }
1845
1846         DPRINTF(sc, UPGT_DEBUG_FW,
1847             "firmware Boot Record Area found at offset %d\n", offset);
1848
1849         /*
1850          * Parse Boot Record Area (BRA) options.
1851          */
1852         while (offset < fw->datasize && bra_end == 0) {
1853                 /* get current BRA option */
1854                 p = (const uint8_t *)fw->data + offset;
1855                 bra_opt = (const struct upgt_fw_bra_option *)p;
1856                 bra_option_type = le32toh(bra_opt->type);
1857                 bra_option_len = le32toh(bra_opt->len) * sizeof(*uc);
1858
1859                 switch (bra_option_type) {
1860                 case UPGT_BRA_TYPE_FW:
1861                         DPRINTF(sc, UPGT_DEBUG_FW, "UPGT_BRA_TYPE_FW len=%d\n",
1862                             bra_option_len);
1863
1864                         if (bra_option_len != UPGT_BRA_FWTYPE_SIZE) {
1865                                 device_printf(sc->sc_dev,
1866                                     "wrong UPGT_BRA_TYPE_FW len\n");
1867                                 error = EIO;
1868                                 goto fail;
1869                         }
1870                         if (memcmp(UPGT_BRA_FWTYPE_LM86, bra_opt->data,
1871                             bra_option_len) == 0) {
1872                                 sc->sc_fw_type = UPGT_FWTYPE_LM86;
1873                                 break;
1874                         }
1875                         if (memcmp(UPGT_BRA_FWTYPE_LM87, bra_opt->data,
1876                             bra_option_len) == 0) {
1877                                 sc->sc_fw_type = UPGT_FWTYPE_LM87;
1878                                 break;
1879                         }
1880                         device_printf(sc->sc_dev,
1881                             "unsupported firmware type\n");
1882                         error = EIO;
1883                         goto fail;
1884                 case UPGT_BRA_TYPE_VERSION:
1885                         DPRINTF(sc, UPGT_DEBUG_FW,
1886                             "UPGT_BRA_TYPE_VERSION len=%d\n", bra_option_len);
1887                         break;
1888                 case UPGT_BRA_TYPE_DEPIF:
1889                         DPRINTF(sc, UPGT_DEBUG_FW,
1890                             "UPGT_BRA_TYPE_DEPIF len=%d\n", bra_option_len);
1891                         break;
1892                 case UPGT_BRA_TYPE_EXPIF:
1893                         DPRINTF(sc, UPGT_DEBUG_FW,
1894                             "UPGT_BRA_TYPE_EXPIF len=%d\n", bra_option_len);
1895                         break;
1896                 case UPGT_BRA_TYPE_DESCR:
1897                         DPRINTF(sc, UPGT_DEBUG_FW,
1898                             "UPGT_BRA_TYPE_DESCR len=%d\n", bra_option_len);
1899
1900                         descr = (const struct upgt_fw_bra_descr *)bra_opt->data;
1901
1902                         sc->sc_memaddr_frame_start =
1903                             le32toh(descr->memaddr_space_start);
1904                         sc->sc_memaddr_frame_end =
1905                             le32toh(descr->memaddr_space_end);
1906
1907                         DPRINTF(sc, UPGT_DEBUG_FW,
1908                             "memory address space start=0x%08x\n",
1909                             sc->sc_memaddr_frame_start);
1910                         DPRINTF(sc, UPGT_DEBUG_FW,
1911                             "memory address space end=0x%08x\n",
1912                             sc->sc_memaddr_frame_end);
1913                         break;
1914                 case UPGT_BRA_TYPE_END:
1915                         DPRINTF(sc, UPGT_DEBUG_FW, "UPGT_BRA_TYPE_END len=%d\n",
1916                             bra_option_len);
1917                         bra_end = 1;
1918                         break;
1919                 default:
1920                         DPRINTF(sc, UPGT_DEBUG_FW, "unknown BRA option len=%d\n",
1921                             bra_option_len);
1922                         error = EIO;
1923                         goto fail;
1924                 }
1925
1926                 /* jump to next BRA option */
1927                 offset += sizeof(struct upgt_fw_bra_option) + bra_option_len;
1928         }
1929
1930         DPRINTF(sc, UPGT_DEBUG_FW, "%s: firmware verified", __func__);
1931 fail:
1932         firmware_put(fw, FIRMWARE_UNLOAD);
1933         return (error);
1934 }
1935
1936 static void
1937 upgt_bulk_tx(struct upgt_softc *sc, struct upgt_data *data)
1938 {
1939
1940         UPGT_ASSERT_LOCKED(sc);
1941
1942         STAILQ_INSERT_TAIL(&sc->sc_tx_pending, data, next);
1943         UPGT_STAT_INC(sc, st_tx_pending);
1944         usbd_transfer_start(sc->sc_xfer[UPGT_BULK_TX]);
1945 }
1946
1947 static int
1948 upgt_device_reset(struct upgt_softc *sc)
1949 {
1950         struct upgt_data *data;
1951         char init_cmd[] = { 0x7e, 0x7e, 0x7e, 0x7e };
1952
1953         UPGT_LOCK(sc);
1954
1955         data = upgt_getbuf(sc);
1956         if (data == NULL) {
1957                 UPGT_UNLOCK(sc);
1958                 return (ENOBUFS);
1959         }
1960         memcpy(data->buf, init_cmd, sizeof(init_cmd));
1961         data->buflen = sizeof(init_cmd);
1962         upgt_bulk_tx(sc, data);
1963         usb_pause_mtx(&sc->sc_mtx, 100);
1964
1965         UPGT_UNLOCK(sc);
1966         DPRINTF(sc, UPGT_DEBUG_FW, "%s: device initialized\n", __func__);
1967         return (0);
1968 }
1969
1970 static int
1971 upgt_alloc_tx(struct upgt_softc *sc)
1972 {
1973         int i;
1974
1975         STAILQ_INIT(&sc->sc_tx_active);
1976         STAILQ_INIT(&sc->sc_tx_inactive);
1977         STAILQ_INIT(&sc->sc_tx_pending);
1978
1979         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
1980                 struct upgt_data *data = &sc->sc_tx_data[i];
1981
1982                 data->buf = malloc(MCLBYTES, M_USBDEV, M_NOWAIT | M_ZERO);
1983                 if (data->buf == NULL) {
1984                         device_printf(sc->sc_dev,
1985                             "could not allocate TX buffer\n");
1986                         return (ENOMEM);
1987                 }
1988                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
1989                 UPGT_STAT_INC(sc, st_tx_inactive);
1990         }
1991
1992         return (0);
1993 }
1994
1995 static int
1996 upgt_alloc_rx(struct upgt_softc *sc)
1997 {
1998         int i;
1999
2000         STAILQ_INIT(&sc->sc_rx_active);
2001         STAILQ_INIT(&sc->sc_rx_inactive);
2002
2003         for (i = 0; i < UPGT_RX_MAXCOUNT; i++) {
2004                 struct upgt_data *data = &sc->sc_rx_data[i];
2005
2006                 data->buf = malloc(MCLBYTES, M_USBDEV, M_NOWAIT | M_ZERO);
2007                 if (data->buf == NULL) {
2008                         device_printf(sc->sc_dev,
2009                             "could not allocate RX buffer\n");
2010                         return (ENOMEM);
2011                 }
2012                 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2013         }
2014
2015         return (0);
2016 }
2017
2018 static int
2019 upgt_detach(device_t dev)
2020 {
2021         struct upgt_softc *sc = device_get_softc(dev);
2022         struct ifnet *ifp = sc->sc_ifp;
2023         struct ieee80211com *ic = ifp->if_l2com;
2024
2025         if (!device_is_attached(dev))
2026                 return 0;
2027
2028         upgt_stop(sc);
2029
2030         callout_drain(&sc->sc_led_ch);
2031         callout_drain(&sc->sc_watchdog_ch);
2032
2033         usbd_transfer_unsetup(sc->sc_xfer, UPGT_N_XFERS);
2034         ieee80211_ifdetach(ic);
2035         upgt_free_rx(sc);
2036         upgt_free_tx(sc);
2037
2038         if_free(ifp);
2039         mtx_destroy(&sc->sc_mtx);
2040
2041         return (0);
2042 }
2043
2044 static void
2045 upgt_free_rx(struct upgt_softc *sc)
2046 {
2047         int i;
2048
2049         for (i = 0; i < UPGT_RX_MAXCOUNT; i++) {
2050                 struct upgt_data *data = &sc->sc_rx_data[i];
2051
2052                 free(data->buf, M_USBDEV);
2053                 data->ni = NULL;
2054         }
2055 }
2056
2057 static void
2058 upgt_free_tx(struct upgt_softc *sc)
2059 {
2060         int i;
2061
2062         for (i = 0; i < UPGT_TX_MAXCOUNT; i++) {
2063                 struct upgt_data *data = &sc->sc_tx_data[i];
2064
2065                 free(data->buf, M_USBDEV);
2066                 data->ni = NULL;
2067         }
2068 }
2069
2070 static void
2071 upgt_abort_xfers_locked(struct upgt_softc *sc)
2072 {
2073         int i;
2074
2075         UPGT_ASSERT_LOCKED(sc);
2076         /* abort any pending transfers */
2077         for (i = 0; i < UPGT_N_XFERS; i++)
2078                 usbd_transfer_stop(sc->sc_xfer[i]);
2079 }
2080
2081 static void
2082 upgt_abort_xfers(struct upgt_softc *sc)
2083 {
2084
2085         UPGT_LOCK(sc);
2086         upgt_abort_xfers_locked(sc);
2087         UPGT_UNLOCK(sc);
2088 }
2089
2090 #define UPGT_SYSCTL_STAT_ADD32(c, h, n, p, d)   \
2091             SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
2092
2093 static void
2094 upgt_sysctl_node(struct upgt_softc *sc)
2095 {
2096         struct sysctl_ctx_list *ctx;
2097         struct sysctl_oid_list *child;
2098         struct sysctl_oid *tree;
2099         struct upgt_stat *stats;
2100
2101         stats = &sc->sc_stat;
2102         ctx = device_get_sysctl_ctx(sc->sc_dev);
2103         child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->sc_dev));
2104
2105         tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
2106             NULL, "UPGT statistics");
2107         child = SYSCTL_CHILDREN(tree);
2108         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_active",
2109             &stats->st_tx_active, "Active numbers in TX queue");
2110         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_inactive",
2111             &stats->st_tx_inactive, "Inactive numbers in TX queue");
2112         UPGT_SYSCTL_STAT_ADD32(ctx, child, "tx_pending",
2113             &stats->st_tx_pending, "Pending numbers in TX queue");
2114 }
2115
2116 #undef UPGT_SYSCTL_STAT_ADD32
2117
2118 static struct upgt_data *
2119 _upgt_getbuf(struct upgt_softc *sc)
2120 {
2121         struct upgt_data *bf;
2122
2123         bf = STAILQ_FIRST(&sc->sc_tx_inactive);
2124         if (bf != NULL) {
2125                 STAILQ_REMOVE_HEAD(&sc->sc_tx_inactive, next);
2126                 UPGT_STAT_DEC(sc, st_tx_inactive);
2127         } else
2128                 bf = NULL;
2129         if (bf == NULL)
2130                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: %s\n", __func__,
2131                     "out of xmit buffers");
2132         return (bf);
2133 }
2134
2135 static struct upgt_data *
2136 upgt_getbuf(struct upgt_softc *sc)
2137 {
2138         struct upgt_data *bf;
2139
2140         UPGT_ASSERT_LOCKED(sc);
2141
2142         bf = _upgt_getbuf(sc);
2143         if (bf == NULL) {
2144                 struct ifnet *ifp = sc->sc_ifp;
2145
2146                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: stop queue\n", __func__);
2147                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2148         }
2149
2150         return (bf);
2151 }
2152
2153 static struct upgt_data *
2154 upgt_gettxbuf(struct upgt_softc *sc)
2155 {
2156         struct upgt_data *bf;
2157
2158         UPGT_ASSERT_LOCKED(sc);
2159
2160         bf = upgt_getbuf(sc);
2161         if (bf == NULL)
2162                 return (NULL);
2163
2164         bf->addr = upgt_mem_alloc(sc);
2165         if (bf->addr == 0) {
2166                 struct ifnet *ifp = sc->sc_ifp;
2167
2168                 DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: no free prism memory!\n",
2169                     __func__);
2170                 STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, bf, next);
2171                 UPGT_STAT_INC(sc, st_tx_inactive);
2172                 if (!(ifp->if_drv_flags & IFF_DRV_OACTIVE))
2173                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2174                 return (NULL);
2175         }
2176         return (bf);
2177 }
2178
2179 static int
2180 upgt_tx_start(struct upgt_softc *sc, struct mbuf *m, struct ieee80211_node *ni,
2181     struct upgt_data *data)
2182 {
2183         struct ieee80211vap *vap = ni->ni_vap;
2184         int error = 0, len;
2185         struct ieee80211_frame *wh;
2186         struct ieee80211_key *k;
2187         struct ifnet *ifp = sc->sc_ifp;
2188         struct upgt_lmac_mem *mem;
2189         struct upgt_lmac_tx_desc *txdesc;
2190
2191         UPGT_ASSERT_LOCKED(sc);
2192
2193         upgt_set_led(sc, UPGT_LED_BLINK);
2194
2195         /*
2196          * Software crypto.
2197          */
2198         wh = mtod(m, struct ieee80211_frame *);
2199         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
2200                 k = ieee80211_crypto_encap(ni, m);
2201                 if (k == NULL) {
2202                         device_printf(sc->sc_dev,
2203                             "ieee80211_crypto_encap returns NULL.\n");
2204                         error = EIO;
2205                         goto done;
2206                 }
2207
2208                 /* in case packet header moved, reset pointer */
2209                 wh = mtod(m, struct ieee80211_frame *);
2210         }
2211
2212         /* Transmit the URB containing the TX data.  */
2213         memset(data->buf, 0, MCLBYTES);
2214         mem = (struct upgt_lmac_mem *)data->buf;
2215         mem->addr = htole32(data->addr);
2216         txdesc = (struct upgt_lmac_tx_desc *)(mem + 1);
2217
2218         if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
2219             IEEE80211_FC0_TYPE_MGT) {
2220                 /* mgmt frames  */
2221                 txdesc->header1.flags = UPGT_H1_FLAGS_TX_MGMT;
2222                 /* always send mgmt frames at lowest rate (DS1) */
2223                 memset(txdesc->rates, 0x10, sizeof(txdesc->rates));
2224         } else {
2225                 /* data frames  */
2226                 txdesc->header1.flags = UPGT_H1_FLAGS_TX_DATA;
2227                 memcpy(txdesc->rates, sc->sc_cur_rateset, sizeof(txdesc->rates));
2228         }
2229         txdesc->header1.type = UPGT_H1_TYPE_TX_DATA;
2230         txdesc->header1.len = htole16(m->m_pkthdr.len);
2231         txdesc->header2.reqid = htole32(data->addr);
2232         txdesc->header2.type = htole16(UPGT_H2_TYPE_TX_ACK_YES);
2233         txdesc->header2.flags = htole16(UPGT_H2_FLAGS_TX_ACK_YES);
2234         txdesc->type = htole32(UPGT_TX_DESC_TYPE_DATA);
2235         txdesc->pad3[0] = UPGT_TX_DESC_PAD3_SIZE;
2236
2237         if (ieee80211_radiotap_active_vap(vap)) {
2238                 struct upgt_tx_radiotap_header *tap = &sc->sc_txtap;
2239
2240                 tap->wt_flags = 0;
2241                 tap->wt_rate = 0;       /* XXX where to get from? */
2242
2243                 ieee80211_radiotap_tx(vap, m);
2244         }
2245
2246         /* copy frame below our TX descriptor header */
2247         m_copydata(m, 0, m->m_pkthdr.len,
2248             data->buf + (sizeof(*mem) + sizeof(*txdesc)));
2249         /* calculate frame size */
2250         len = sizeof(*mem) + sizeof(*txdesc) + m->m_pkthdr.len;
2251         /* we need to align the frame to a 4 byte boundary */
2252         len = (len + 3) & ~3;
2253         /* calculate frame checksum */
2254         mem->chksum = upgt_chksum_le((uint32_t *)txdesc, len - sizeof(*mem));
2255         data->ni = ni;
2256         data->m = m;
2257         data->buflen = len;
2258
2259         DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: TX start data sending (%d bytes)\n",
2260             __func__, len);
2261         KASSERT(len <= MCLBYTES, ("mbuf is small for saving data"));
2262
2263         upgt_bulk_tx(sc, data);
2264 done:
2265         /*
2266          * If we don't regulary read the device statistics, the RX queue
2267          * will stall.  It's strange, but it works, so we keep reading
2268          * the statistics here.  *shrug*
2269          */
2270         if (!(ifp->if_opackets % UPGT_TX_STAT_INTERVAL))
2271                 upgt_get_stats(sc);
2272
2273         return (error);
2274 }
2275
2276 static void
2277 upgt_bulk_rx_callback(struct usb_xfer *xfer, usb_error_t error)
2278 {
2279         struct upgt_softc *sc = usbd_xfer_softc(xfer);
2280         struct ifnet *ifp = sc->sc_ifp;
2281         struct ieee80211com *ic = ifp->if_l2com;
2282         struct ieee80211_frame *wh;
2283         struct ieee80211_node *ni;
2284         struct mbuf *m = NULL;
2285         struct upgt_data *data;
2286         int8_t nf;
2287         int rssi = -1;
2288
2289         UPGT_ASSERT_LOCKED(sc);
2290
2291         switch (USB_GET_STATE(xfer)) {
2292         case USB_ST_TRANSFERRED:
2293                 data = STAILQ_FIRST(&sc->sc_rx_active);
2294                 if (data == NULL)
2295                         goto setup;
2296                 STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2297                 m = upgt_rxeof(xfer, data, &rssi);
2298                 STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2299                 /* FALLTHROUGH */
2300         case USB_ST_SETUP:
2301 setup:
2302                 data = STAILQ_FIRST(&sc->sc_rx_inactive);
2303                 if (data == NULL)
2304                         return;
2305                 STAILQ_REMOVE_HEAD(&sc->sc_rx_inactive, next);
2306                 STAILQ_INSERT_TAIL(&sc->sc_rx_active, data, next);
2307                 usbd_xfer_set_frame_data(xfer, 0, data->buf,
2308                     usbd_xfer_max_len(xfer));
2309                 usbd_transfer_submit(xfer);
2310
2311                 /*
2312                  * To avoid LOR we should unlock our private mutex here to call
2313                  * ieee80211_input() because here is at the end of a USB
2314                  * callback and safe to unlock.
2315                  */
2316                 UPGT_UNLOCK(sc);
2317                 if (m != NULL) {
2318                         wh = mtod(m, struct ieee80211_frame *);
2319                         ni = ieee80211_find_rxnode(ic,
2320                             (struct ieee80211_frame_min *)wh);
2321                         nf = -95;       /* XXX */
2322                         if (ni != NULL) {
2323                                 (void) ieee80211_input(ni, m, rssi, nf);
2324                                 /* node is no longer needed */
2325                                 ieee80211_free_node(ni);
2326                         } else
2327                                 (void) ieee80211_input_all(ic, m, rssi, nf);
2328                         m = NULL;
2329                 }
2330                 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
2331                     !IFQ_IS_EMPTY(&ifp->if_snd))
2332                         upgt_start(ifp);
2333                 UPGT_LOCK(sc);
2334                 break;
2335         default:
2336                 /* needs it to the inactive queue due to a error.  */
2337                 data = STAILQ_FIRST(&sc->sc_rx_active);
2338                 if (data != NULL) {
2339                         STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
2340                         STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
2341                 }
2342                 if (error != USB_ERR_CANCELLED) {
2343                         usbd_xfer_set_stall(xfer);
2344                         ifp->if_ierrors++;
2345                         goto setup;
2346                 }
2347                 break;
2348         }
2349 }
2350
2351 static void
2352 upgt_bulk_tx_callback(struct usb_xfer *xfer, usb_error_t error)
2353 {
2354         struct upgt_softc *sc = usbd_xfer_softc(xfer);
2355         struct ifnet *ifp = sc->sc_ifp;
2356         struct upgt_data *data;
2357
2358         UPGT_ASSERT_LOCKED(sc);
2359         switch (USB_GET_STATE(xfer)) {
2360         case USB_ST_TRANSFERRED:
2361                 data = STAILQ_FIRST(&sc->sc_tx_active);
2362                 if (data == NULL)
2363                         goto setup;
2364                 STAILQ_REMOVE_HEAD(&sc->sc_tx_active, next);
2365                 UPGT_STAT_DEC(sc, st_tx_active);
2366                 upgt_txeof(xfer, data);
2367                 STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
2368                 UPGT_STAT_INC(sc, st_tx_inactive);
2369                 /* FALLTHROUGH */
2370         case USB_ST_SETUP:
2371 setup:
2372                 data = STAILQ_FIRST(&sc->sc_tx_pending);
2373                 if (data == NULL) {
2374                         DPRINTF(sc, UPGT_DEBUG_XMIT, "%s: empty pending queue\n",
2375                             __func__);
2376                         return;
2377                 }
2378                 STAILQ_REMOVE_HEAD(&sc->sc_tx_pending, next);
2379                 UPGT_STAT_DEC(sc, st_tx_pending);
2380                 STAILQ_INSERT_TAIL(&sc->sc_tx_active, data, next);
2381                 UPGT_STAT_INC(sc, st_tx_active);
2382
2383                 usbd_xfer_set_frame_data(xfer, 0, data->buf, data->buflen);
2384                 usbd_transfer_submit(xfer);
2385                 UPGT_UNLOCK(sc);
2386                 upgt_start(ifp);
2387                 UPGT_LOCK(sc);
2388                 break;
2389         default:
2390                 data = STAILQ_FIRST(&sc->sc_tx_active);
2391                 if (data == NULL)
2392                         goto setup;
2393                 if (data->ni != NULL) {
2394                         ieee80211_free_node(data->ni);
2395                         data->ni = NULL;
2396                         ifp->if_oerrors++;
2397                 }
2398                 if (error != USB_ERR_CANCELLED) {
2399                         usbd_xfer_set_stall(xfer);
2400                         goto setup;
2401                 }
2402                 break;
2403         }
2404 }
2405
2406 static device_method_t upgt_methods[] = {
2407         /* Device interface */
2408         DEVMETHOD(device_probe, upgt_match),
2409         DEVMETHOD(device_attach, upgt_attach),
2410         DEVMETHOD(device_detach, upgt_detach),
2411
2412         { 0, 0 }
2413 };
2414
2415 static driver_t upgt_driver = {
2416         .name = "upgt",
2417         .methods = upgt_methods,
2418         .size = sizeof(struct upgt_softc)
2419 };
2420
2421 static devclass_t upgt_devclass;
2422
2423 DRIVER_MODULE(if_upgt, uhub, upgt_driver, upgt_devclass, NULL, 0);
2424 MODULE_VERSION(if_upgt, 1);
2425 MODULE_DEPEND(if_upgt, usb, 1, 1, 1);
2426 MODULE_DEPEND(if_upgt, wlan, 1, 1, 1);
2427 MODULE_DEPEND(if_upgt, upgtfw_fw, 1, 1, 1);