main.c revision e9bd5bcde7af27ebb92bb866afde5ef5e4f3dc6c
1/* 2 * Copyright (C) 2008, cozybit Inc. 3 * Copyright (C) 2003-2006, Marvell International Ltd. 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or (at 8 * your option) any later version. 9 */ 10#include "deb_defs.h" 11#include "libertas_tf.h" 12#include "linux/etherdevice.h" 13 14#define DRIVER_RELEASE_VERSION "004.p0" 15/* thinfirm version: 5.132.X.pX */ 16#define LBTF_FW_VER_MIN 0x05840300 17#define LBTF_FW_VER_MAX 0x0584ffff 18#define QOS_CONTROL_LEN 2 19 20/* Module parameters */ 21unsigned int lbtf_debug; 22EXPORT_SYMBOL_GPL(lbtf_debug); 23module_param_named(libertas_tf_debug, lbtf_debug, int, 0644); 24 25static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION 26#ifdef DEBUG 27 "-dbg" 28#endif 29 ""; 30 31struct workqueue_struct *lbtf_wq; 32 33static const struct ieee80211_channel lbtf_channels[] = { 34 { .center_freq = 2412, .hw_value = 1 }, 35 { .center_freq = 2417, .hw_value = 2 }, 36 { .center_freq = 2422, .hw_value = 3 }, 37 { .center_freq = 2427, .hw_value = 4 }, 38 { .center_freq = 2432, .hw_value = 5 }, 39 { .center_freq = 2437, .hw_value = 6 }, 40 { .center_freq = 2442, .hw_value = 7 }, 41 { .center_freq = 2447, .hw_value = 8 }, 42 { .center_freq = 2452, .hw_value = 9 }, 43 { .center_freq = 2457, .hw_value = 10 }, 44 { .center_freq = 2462, .hw_value = 11 }, 45 { .center_freq = 2467, .hw_value = 12 }, 46 { .center_freq = 2472, .hw_value = 13 }, 47 { .center_freq = 2484, .hw_value = 14 }, 48}; 49 50/* This table contains the hardware specific values for the modulation rates. */ 51static const struct ieee80211_rate lbtf_rates[] = { 52 { .bitrate = 10, 53 .hw_value = 0, }, 54 { .bitrate = 20, 55 .hw_value = 1, 56 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 57 { .bitrate = 55, 58 .hw_value = 2, 59 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 60 { .bitrate = 110, 61 .hw_value = 3, 62 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 63 { .bitrate = 60, 64 .hw_value = 5, 65 .flags = 0 }, 66 { .bitrate = 90, 67 .hw_value = 6, 68 .flags = 0 }, 69 { .bitrate = 120, 70 .hw_value = 7, 71 .flags = 0 }, 72 { .bitrate = 180, 73 .hw_value = 8, 74 .flags = 0 }, 75 { .bitrate = 240, 76 .hw_value = 9, 77 .flags = 0 }, 78 { .bitrate = 360, 79 .hw_value = 10, 80 .flags = 0 }, 81 { .bitrate = 480, 82 .hw_value = 11, 83 .flags = 0 }, 84 { .bitrate = 540, 85 .hw_value = 12, 86 .flags = 0 }, 87}; 88 89static void lbtf_cmd_work(struct work_struct *work) 90{ 91 struct lbtf_private *priv = container_of(work, struct lbtf_private, 92 cmd_work); 93 94 lbtf_deb_enter(LBTF_DEB_CMD); 95 96 spin_lock_irq(&priv->driver_lock); 97 /* command response? */ 98 if (priv->cmd_response_rxed) { 99 priv->cmd_response_rxed = 0; 100 spin_unlock_irq(&priv->driver_lock); 101 lbtf_process_rx_command(priv); 102 spin_lock_irq(&priv->driver_lock); 103 } 104 105 if (priv->cmd_timed_out && priv->cur_cmd) { 106 struct cmd_ctrl_node *cmdnode = priv->cur_cmd; 107 108 if (++priv->nr_retries > 10) { 109 lbtf_complete_command(priv, cmdnode, 110 -ETIMEDOUT); 111 priv->nr_retries = 0; 112 } else { 113 priv->cur_cmd = NULL; 114 115 /* Stick it back at the _top_ of the pending 116 * queue for immediate resubmission */ 117 list_add(&cmdnode->list, &priv->cmdpendingq); 118 } 119 } 120 priv->cmd_timed_out = 0; 121 spin_unlock_irq(&priv->driver_lock); 122 123 if (!priv->fw_ready) { 124 lbtf_deb_leave_args(LBTF_DEB_CMD, "fw not ready"); 125 return; 126 } 127 128 /* Execute the next command */ 129 if (!priv->cur_cmd) 130 lbtf_execute_next_command(priv); 131 132 lbtf_deb_leave(LBTF_DEB_CMD); 133} 134 135/** 136 * lbtf_setup_firmware: initialize firmware. 137 * 138 * @priv A pointer to struct lbtf_private structure 139 * 140 * Returns: 0 on success. 141 */ 142static int lbtf_setup_firmware(struct lbtf_private *priv) 143{ 144 int ret = -1; 145 146 lbtf_deb_enter(LBTF_DEB_FW); 147 /* 148 * Read priv address from HW 149 */ 150 memset(priv->current_addr, 0xff, ETH_ALEN); 151 ret = lbtf_update_hw_spec(priv); 152 if (ret) { 153 ret = -1; 154 goto done; 155 } 156 157 lbtf_set_mac_control(priv); 158 lbtf_set_radio_control(priv); 159 160 ret = 0; 161done: 162 lbtf_deb_leave_args(LBTF_DEB_FW, "ret: %d", ret); 163 return ret; 164} 165 166/** 167 * This function handles the timeout of command sending. 168 * It will re-send the same command again. 169 */ 170static void command_timer_fn(unsigned long data) 171{ 172 struct lbtf_private *priv = (struct lbtf_private *)data; 173 unsigned long flags; 174 lbtf_deb_enter(LBTF_DEB_CMD); 175 176 spin_lock_irqsave(&priv->driver_lock, flags); 177 178 if (!priv->cur_cmd) { 179 printk(KERN_DEBUG "libertastf: command timer expired; " 180 "no pending command\n"); 181 goto out; 182 } 183 184 printk(KERN_DEBUG "libertas: command %x timed out\n", 185 le16_to_cpu(priv->cur_cmd->cmdbuf->command)); 186 187 priv->cmd_timed_out = 1; 188 queue_work(lbtf_wq, &priv->cmd_work); 189out: 190 spin_unlock_irqrestore(&priv->driver_lock, flags); 191 lbtf_deb_leave(LBTF_DEB_CMD); 192} 193 194static int lbtf_init_adapter(struct lbtf_private *priv) 195{ 196 lbtf_deb_enter(LBTF_DEB_MAIN); 197 memset(priv->current_addr, 0xff, ETH_ALEN); 198 mutex_init(&priv->lock); 199 200 priv->vif = NULL; 201 setup_timer(&priv->command_timer, command_timer_fn, 202 (unsigned long)priv); 203 204 INIT_LIST_HEAD(&priv->cmdfreeq); 205 INIT_LIST_HEAD(&priv->cmdpendingq); 206 207 spin_lock_init(&priv->driver_lock); 208 209 /* Allocate the command buffers */ 210 if (lbtf_allocate_cmd_buffer(priv)) 211 return -1; 212 213 lbtf_deb_leave(LBTF_DEB_MAIN); 214 return 0; 215} 216 217static void lbtf_free_adapter(struct lbtf_private *priv) 218{ 219 lbtf_deb_enter(LBTF_DEB_MAIN); 220 lbtf_free_cmd_buffer(priv); 221 del_timer(&priv->command_timer); 222 lbtf_deb_leave(LBTF_DEB_MAIN); 223} 224 225static int lbtf_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb) 226{ 227 struct lbtf_private *priv = hw->priv; 228 229 priv->skb_to_tx = skb; 230 queue_work(lbtf_wq, &priv->tx_work); 231 /* 232 * queue will be restarted when we receive transmission feedback if 233 * there are no buffered multicast frames to send 234 */ 235 ieee80211_stop_queues(priv->hw); 236 return NETDEV_TX_OK; 237} 238 239static void lbtf_tx_work(struct work_struct *work) 240{ 241 struct lbtf_private *priv = container_of(work, struct lbtf_private, 242 tx_work); 243 unsigned int len; 244 struct ieee80211_tx_info *info; 245 struct txpd *txpd; 246 struct sk_buff *skb = NULL; 247 int err; 248 249 lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX); 250 251 if ((priv->vif->type == NL80211_IFTYPE_AP) && 252 (!skb_queue_empty(&priv->bc_ps_buf))) 253 skb = skb_dequeue(&priv->bc_ps_buf); 254 else if (priv->skb_to_tx) { 255 skb = priv->skb_to_tx; 256 priv->skb_to_tx = NULL; 257 } else { 258 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 259 return; 260 } 261 262 len = skb->len; 263 info = IEEE80211_SKB_CB(skb); 264 txpd = (struct txpd *) skb_push(skb, sizeof(struct txpd)); 265 266 if (priv->surpriseremoved) { 267 dev_kfree_skb_any(skb); 268 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 269 return; 270 } 271 272 memset(txpd, 0, sizeof(struct txpd)); 273 /* Activate per-packet rate selection */ 274 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE | 275 ieee80211_get_tx_rate(priv->hw, info)->hw_value); 276 277 /* copy destination address from 802.11 header */ 278 memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4, 279 ETH_ALEN); 280 txpd->tx_packet_length = cpu_to_le16(len); 281 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd)); 282 lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100)); 283 BUG_ON(priv->tx_skb); 284 spin_lock_irq(&priv->driver_lock); 285 priv->tx_skb = skb; 286 err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len); 287 spin_unlock_irq(&priv->driver_lock); 288 if (err) { 289 dev_kfree_skb_any(skb); 290 priv->tx_skb = NULL; 291 pr_err("TX error: %d", err); 292 } 293 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 294} 295 296static int lbtf_op_start(struct ieee80211_hw *hw) 297{ 298 struct lbtf_private *priv = hw->priv; 299 void *card = priv->card; 300 int ret = -1; 301 302 lbtf_deb_enter(LBTF_DEB_MACOPS); 303 304 if (!priv->fw_ready) 305 /* Upload firmware */ 306 if (priv->hw_prog_firmware(card)) 307 goto err_prog_firmware; 308 309 /* poke the firmware */ 310 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE; 311 priv->radioon = RADIO_ON; 312 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON; 313 ret = lbtf_setup_firmware(priv); 314 if (ret) 315 goto err_prog_firmware; 316 317 if ((priv->fwrelease < LBTF_FW_VER_MIN) || 318 (priv->fwrelease > LBTF_FW_VER_MAX)) { 319 ret = -1; 320 goto err_prog_firmware; 321 } 322 323 printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n"); 324 lbtf_deb_leave(LBTF_DEB_MACOPS); 325 return 0; 326 327err_prog_firmware: 328 priv->hw_reset_device(card); 329 lbtf_deb_leave_args(LBTF_DEB_MACOPS, "error programing fw; ret=%d", ret); 330 return ret; 331} 332 333static void lbtf_op_stop(struct ieee80211_hw *hw) 334{ 335 struct lbtf_private *priv = hw->priv; 336 unsigned long flags; 337 struct sk_buff *skb; 338 339 struct cmd_ctrl_node *cmdnode; 340 341 lbtf_deb_enter(LBTF_DEB_MACOPS); 342 343 /* Flush pending command nodes */ 344 spin_lock_irqsave(&priv->driver_lock, flags); 345 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) { 346 cmdnode->result = -ENOENT; 347 cmdnode->cmdwaitqwoken = 1; 348 wake_up_interruptible(&cmdnode->cmdwait_q); 349 } 350 351 spin_unlock_irqrestore(&priv->driver_lock, flags); 352 cancel_work_sync(&priv->cmd_work); 353 cancel_work_sync(&priv->tx_work); 354 while ((skb = skb_dequeue(&priv->bc_ps_buf))) 355 dev_kfree_skb_any(skb); 356 priv->radioon = RADIO_OFF; 357 lbtf_set_radio_control(priv); 358 359 lbtf_deb_leave(LBTF_DEB_MACOPS); 360 return; 361} 362 363static int lbtf_op_add_interface(struct ieee80211_hw *hw, 364 struct ieee80211_vif *vif) 365{ 366 struct lbtf_private *priv = hw->priv; 367 lbtf_deb_enter(LBTF_DEB_MACOPS); 368 if (priv->vif != NULL) 369 return -EOPNOTSUPP; 370 371 priv->vif = vif; 372 switch (vif->type) { 373 case NL80211_IFTYPE_MESH_POINT: 374 case NL80211_IFTYPE_AP: 375 lbtf_set_mode(priv, LBTF_AP_MODE); 376 break; 377 case NL80211_IFTYPE_STATION: 378 lbtf_set_mode(priv, LBTF_STA_MODE); 379 break; 380 default: 381 priv->vif = NULL; 382 return -EOPNOTSUPP; 383 } 384 lbtf_set_mac_address(priv, (u8 *) vif->addr); 385 lbtf_deb_leave(LBTF_DEB_MACOPS); 386 return 0; 387} 388 389static void lbtf_op_remove_interface(struct ieee80211_hw *hw, 390 struct ieee80211_vif *vif) 391{ 392 struct lbtf_private *priv = hw->priv; 393 lbtf_deb_enter(LBTF_DEB_MACOPS); 394 395 if (priv->vif->type == NL80211_IFTYPE_AP || 396 priv->vif->type == NL80211_IFTYPE_MESH_POINT) 397 lbtf_beacon_ctrl(priv, 0, 0); 398 lbtf_set_mode(priv, LBTF_PASSIVE_MODE); 399 lbtf_set_bssid(priv, 0, NULL); 400 priv->vif = NULL; 401 lbtf_deb_leave(LBTF_DEB_MACOPS); 402} 403 404static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed) 405{ 406 struct lbtf_private *priv = hw->priv; 407 struct ieee80211_conf *conf = &hw->conf; 408 lbtf_deb_enter(LBTF_DEB_MACOPS); 409 410 if (conf->channel->center_freq != priv->cur_freq) { 411 priv->cur_freq = conf->channel->center_freq; 412 lbtf_set_channel(priv, conf->channel->hw_value); 413 } 414 lbtf_deb_leave(LBTF_DEB_MACOPS); 415 return 0; 416} 417 418static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw, 419 int mc_count, struct dev_addr_list *mclist) 420{ 421 struct lbtf_private *priv = hw->priv; 422 int i; 423 424 if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE) 425 return mc_count; 426 427 priv->nr_of_multicastmacaddr = mc_count; 428 for (i = 0; i < mc_count; i++) { 429 if (!mclist) 430 break; 431 memcpy(&priv->multicastlist[i], mclist->da_addr, 432 ETH_ALEN); 433 mclist = mclist->next; 434 } 435 436 return mc_count; 437} 438 439#define SUPPORTED_FIF_FLAGS (FIF_PROMISC_IN_BSS | FIF_ALLMULTI) 440static void lbtf_op_configure_filter(struct ieee80211_hw *hw, 441 unsigned int changed_flags, 442 unsigned int *new_flags, 443 u64 multicast) 444{ 445 struct lbtf_private *priv = hw->priv; 446 int old_mac_control = priv->mac_control; 447 448 lbtf_deb_enter(LBTF_DEB_MACOPS); 449 450 changed_flags &= SUPPORTED_FIF_FLAGS; 451 *new_flags &= SUPPORTED_FIF_FLAGS; 452 453 if (!changed_flags) { 454 lbtf_deb_leave(LBTF_DEB_MACOPS); 455 return; 456 } 457 458 if (*new_flags & (FIF_PROMISC_IN_BSS)) 459 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE; 460 else 461 priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE; 462 if (*new_flags & (FIF_ALLMULTI) || 463 multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) { 464 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE; 465 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE; 466 } else if (multicast) { 467 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE; 468 priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE; 469 lbtf_cmd_set_mac_multicast_addr(priv); 470 } else { 471 priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE | 472 CMD_ACT_MAC_ALL_MULTICAST_ENABLE); 473 if (priv->nr_of_multicastmacaddr) { 474 priv->nr_of_multicastmacaddr = 0; 475 lbtf_cmd_set_mac_multicast_addr(priv); 476 } 477 } 478 479 480 if (priv->mac_control != old_mac_control) 481 lbtf_set_mac_control(priv); 482 483 lbtf_deb_leave(LBTF_DEB_MACOPS); 484} 485 486static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw, 487 struct ieee80211_vif *vif, 488 struct ieee80211_bss_conf *bss_conf, 489 u32 changes) 490{ 491 struct lbtf_private *priv = hw->priv; 492 struct sk_buff *beacon; 493 lbtf_deb_enter(LBTF_DEB_MACOPS); 494 495 if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_INT)) { 496 switch (priv->vif->type) { 497 case NL80211_IFTYPE_AP: 498 case NL80211_IFTYPE_MESH_POINT: 499 beacon = ieee80211_beacon_get(hw, vif); 500 if (beacon) { 501 lbtf_beacon_set(priv, beacon); 502 kfree_skb(beacon); 503 lbtf_beacon_ctrl(priv, 1, 504 bss_conf->beacon_int); 505 } 506 break; 507 default: 508 break; 509 } 510 } 511 512 if (changes & BSS_CHANGED_BSSID) { 513 bool activate = !is_zero_ether_addr(bss_conf->bssid); 514 lbtf_set_bssid(priv, activate, bss_conf->bssid); 515 } 516 517 if (changes & BSS_CHANGED_ERP_PREAMBLE) { 518 if (bss_conf->use_short_preamble) 519 priv->preamble = CMD_TYPE_SHORT_PREAMBLE; 520 else 521 priv->preamble = CMD_TYPE_LONG_PREAMBLE; 522 lbtf_set_radio_control(priv); 523 } 524 525 lbtf_deb_leave(LBTF_DEB_MACOPS); 526} 527 528static const struct ieee80211_ops lbtf_ops = { 529 .tx = lbtf_op_tx, 530 .start = lbtf_op_start, 531 .stop = lbtf_op_stop, 532 .add_interface = lbtf_op_add_interface, 533 .remove_interface = lbtf_op_remove_interface, 534 .config = lbtf_op_config, 535 .prepare_multicast = lbtf_op_prepare_multicast, 536 .configure_filter = lbtf_op_configure_filter, 537 .bss_info_changed = lbtf_op_bss_info_changed, 538}; 539 540int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb) 541{ 542 struct ieee80211_rx_status stats; 543 struct rxpd *prxpd; 544 int need_padding; 545 unsigned int flags; 546 struct ieee80211_hdr *hdr; 547 548 lbtf_deb_enter(LBTF_DEB_RX); 549 550 prxpd = (struct rxpd *) skb->data; 551 552 stats.flag = 0; 553 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK))) 554 stats.flag |= RX_FLAG_FAILED_FCS_CRC; 555 stats.freq = priv->cur_freq; 556 stats.band = IEEE80211_BAND_2GHZ; 557 stats.signal = prxpd->snr; 558 stats.noise = prxpd->nf; 559 /* Marvell rate index has a hole at value 4 */ 560 if (prxpd->rx_rate > 4) 561 --prxpd->rx_rate; 562 stats.rate_idx = prxpd->rx_rate; 563 skb_pull(skb, sizeof(struct rxpd)); 564 565 hdr = (struct ieee80211_hdr *)skb->data; 566 flags = le32_to_cpu(*(__le32 *)(skb->data + 4)); 567 568 need_padding = ieee80211_is_data_qos(hdr->frame_control); 569 need_padding ^= ieee80211_has_a4(hdr->frame_control); 570 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) && 571 (*ieee80211_get_qos_ctl(hdr) & 572 IEEE80211_QOS_CONTROL_A_MSDU_PRESENT); 573 574 if (need_padding) { 575 memmove(skb->data + 2, skb->data, skb->len); 576 skb_reserve(skb, 2); 577 } 578 579 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats)); 580 581 lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n", 582 skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd)); 583 lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data, 584 min_t(unsigned int, skb->len, 100)); 585 586 ieee80211_rx_irqsafe(priv->hw, skb); 587 588 lbtf_deb_leave(LBTF_DEB_RX); 589 return 0; 590} 591EXPORT_SYMBOL_GPL(lbtf_rx); 592 593/** 594 * lbtf_add_card: Add and initialize the card, no fw upload yet. 595 * 596 * @card A pointer to card 597 * 598 * Returns: pointer to struct lbtf_priv. 599 */ 600struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev) 601{ 602 struct ieee80211_hw *hw; 603 struct lbtf_private *priv = NULL; 604 605 lbtf_deb_enter(LBTF_DEB_MAIN); 606 607 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops); 608 if (!hw) 609 goto done; 610 611 priv = hw->priv; 612 if (lbtf_init_adapter(priv)) 613 goto err_init_adapter; 614 615 priv->hw = hw; 616 priv->card = card; 617 priv->tx_skb = NULL; 618 619 hw->queues = 1; 620 hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING; 621 hw->extra_tx_headroom = sizeof(struct txpd); 622 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels)); 623 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates)); 624 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates); 625 priv->band.bitrates = priv->rates; 626 priv->band.n_channels = ARRAY_SIZE(lbtf_channels); 627 priv->band.channels = priv->channels; 628 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band; 629 hw->wiphy->interface_modes = 630 BIT(NL80211_IFTYPE_STATION) | 631 BIT(NL80211_IFTYPE_ADHOC); 632 skb_queue_head_init(&priv->bc_ps_buf); 633 634 SET_IEEE80211_DEV(hw, dmdev); 635 636 INIT_WORK(&priv->cmd_work, lbtf_cmd_work); 637 INIT_WORK(&priv->tx_work, lbtf_tx_work); 638 if (ieee80211_register_hw(hw)) 639 goto err_init_adapter; 640 641 goto done; 642 643err_init_adapter: 644 lbtf_free_adapter(priv); 645 ieee80211_free_hw(hw); 646 priv = NULL; 647 648done: 649 lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv); 650 return priv; 651} 652EXPORT_SYMBOL_GPL(lbtf_add_card); 653 654 655int lbtf_remove_card(struct lbtf_private *priv) 656{ 657 struct ieee80211_hw *hw = priv->hw; 658 659 lbtf_deb_enter(LBTF_DEB_MAIN); 660 661 priv->surpriseremoved = 1; 662 del_timer(&priv->command_timer); 663 lbtf_free_adapter(priv); 664 priv->hw = NULL; 665 ieee80211_unregister_hw(hw); 666 ieee80211_free_hw(hw); 667 668 lbtf_deb_leave(LBTF_DEB_MAIN); 669 return 0; 670} 671EXPORT_SYMBOL_GPL(lbtf_remove_card); 672 673void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail) 674{ 675 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb); 676 677 ieee80211_tx_info_clear_status(info); 678 /* 679 * Commented out, otherwise we never go beyond 1Mbit/s using mac80211 680 * default pid rc algorithm. 681 * 682 * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt; 683 */ 684 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail) 685 info->flags |= IEEE80211_TX_STAT_ACK; 686 skb_pull(priv->tx_skb, sizeof(struct txpd)); 687 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb); 688 priv->tx_skb = NULL; 689 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf)) 690 ieee80211_wake_queues(priv->hw); 691 else 692 queue_work(lbtf_wq, &priv->tx_work); 693} 694EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback); 695 696void lbtf_bcn_sent(struct lbtf_private *priv) 697{ 698 struct sk_buff *skb = NULL; 699 700 if (priv->vif->type != NL80211_IFTYPE_AP) 701 return; 702 703 if (skb_queue_empty(&priv->bc_ps_buf)) { 704 bool tx_buff_bc = 0; 705 706 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) { 707 skb_queue_tail(&priv->bc_ps_buf, skb); 708 tx_buff_bc = 1; 709 } 710 if (tx_buff_bc) { 711 ieee80211_stop_queues(priv->hw); 712 queue_work(lbtf_wq, &priv->tx_work); 713 } 714 } 715 716 skb = ieee80211_beacon_get(priv->hw, priv->vif); 717 718 if (skb) { 719 lbtf_beacon_set(priv, skb); 720 kfree_skb(skb); 721 } 722} 723EXPORT_SYMBOL_GPL(lbtf_bcn_sent); 724 725static int __init lbtf_init_module(void) 726{ 727 lbtf_deb_enter(LBTF_DEB_MAIN); 728 lbtf_wq = create_workqueue("libertastf"); 729 if (lbtf_wq == NULL) { 730 printk(KERN_ERR "libertastf: couldn't create workqueue\n"); 731 return -ENOMEM; 732 } 733 lbtf_deb_leave(LBTF_DEB_MAIN); 734 return 0; 735} 736 737static void __exit lbtf_exit_module(void) 738{ 739 lbtf_deb_enter(LBTF_DEB_MAIN); 740 destroy_workqueue(lbtf_wq); 741 lbtf_deb_leave(LBTF_DEB_MAIN); 742} 743 744module_init(lbtf_init_module); 745module_exit(lbtf_exit_module); 746 747MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library"); 748MODULE_AUTHOR("Cozybit Inc."); 749MODULE_LICENSE("GPL"); 750