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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 11 12#include <linux/slab.h> 13 14#include <linux/etherdevice.h> 15#include "libertas_tf.h" 16 17#define DRIVER_RELEASE_VERSION "004.p0" 18/* thinfirm version: 5.132.X.pX */ 19#define LBTF_FW_VER_MIN 0x05840300 20#define LBTF_FW_VER_MAX 0x0584ffff 21#define QOS_CONTROL_LEN 2 22 23/* Module parameters */ 24unsigned int lbtf_debug; 25EXPORT_SYMBOL_GPL(lbtf_debug); 26module_param_named(libertas_tf_debug, lbtf_debug, int, 0644); 27 28static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION 29#ifdef DEBUG 30 "-dbg" 31#endif 32 ""; 33 34struct workqueue_struct *lbtf_wq; 35 36static const struct ieee80211_channel lbtf_channels[] = { 37 { .center_freq = 2412, .hw_value = 1 }, 38 { .center_freq = 2417, .hw_value = 2 }, 39 { .center_freq = 2422, .hw_value = 3 }, 40 { .center_freq = 2427, .hw_value = 4 }, 41 { .center_freq = 2432, .hw_value = 5 }, 42 { .center_freq = 2437, .hw_value = 6 }, 43 { .center_freq = 2442, .hw_value = 7 }, 44 { .center_freq = 2447, .hw_value = 8 }, 45 { .center_freq = 2452, .hw_value = 9 }, 46 { .center_freq = 2457, .hw_value = 10 }, 47 { .center_freq = 2462, .hw_value = 11 }, 48 { .center_freq = 2467, .hw_value = 12 }, 49 { .center_freq = 2472, .hw_value = 13 }, 50 { .center_freq = 2484, .hw_value = 14 }, 51}; 52 53/* This table contains the hardware specific values for the modulation rates. */ 54static const struct ieee80211_rate lbtf_rates[] = { 55 { .bitrate = 10, 56 .hw_value = 0, }, 57 { .bitrate = 20, 58 .hw_value = 1, 59 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 60 { .bitrate = 55, 61 .hw_value = 2, 62 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 63 { .bitrate = 110, 64 .hw_value = 3, 65 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 66 { .bitrate = 60, 67 .hw_value = 5, 68 .flags = 0 }, 69 { .bitrate = 90, 70 .hw_value = 6, 71 .flags = 0 }, 72 { .bitrate = 120, 73 .hw_value = 7, 74 .flags = 0 }, 75 { .bitrate = 180, 76 .hw_value = 8, 77 .flags = 0 }, 78 { .bitrate = 240, 79 .hw_value = 9, 80 .flags = 0 }, 81 { .bitrate = 360, 82 .hw_value = 10, 83 .flags = 0 }, 84 { .bitrate = 480, 85 .hw_value = 11, 86 .flags = 0 }, 87 { .bitrate = 540, 88 .hw_value = 12, 89 .flags = 0 }, 90}; 91 92static void lbtf_cmd_work(struct work_struct *work) 93{ 94 struct lbtf_private *priv = container_of(work, struct lbtf_private, 95 cmd_work); 96 97 lbtf_deb_enter(LBTF_DEB_CMD); 98 99 spin_lock_irq(&priv->driver_lock); 100 /* command response? */ 101 if (priv->cmd_response_rxed) { 102 priv->cmd_response_rxed = 0; 103 spin_unlock_irq(&priv->driver_lock); 104 lbtf_process_rx_command(priv); 105 spin_lock_irq(&priv->driver_lock); 106 } 107 108 if (priv->cmd_timed_out && priv->cur_cmd) { 109 struct cmd_ctrl_node *cmdnode = priv->cur_cmd; 110 111 if (++priv->nr_retries > 10) { 112 lbtf_complete_command(priv, cmdnode, 113 -ETIMEDOUT); 114 priv->nr_retries = 0; 115 } else { 116 priv->cur_cmd = NULL; 117 118 /* Stick it back at the _top_ of the pending 119 * queue for immediate resubmission */ 120 list_add(&cmdnode->list, &priv->cmdpendingq); 121 } 122 } 123 priv->cmd_timed_out = 0; 124 spin_unlock_irq(&priv->driver_lock); 125 126 if (!priv->fw_ready) { 127 lbtf_deb_leave_args(LBTF_DEB_CMD, "fw not ready"); 128 return; 129 } 130 131 /* Execute the next command */ 132 if (!priv->cur_cmd) 133 lbtf_execute_next_command(priv); 134 135 lbtf_deb_leave(LBTF_DEB_CMD); 136} 137 138/** 139 * lbtf_setup_firmware: initialize firmware. 140 * 141 * @priv A pointer to struct lbtf_private structure 142 * 143 * Returns: 0 on success. 144 */ 145static int lbtf_setup_firmware(struct lbtf_private *priv) 146{ 147 int ret = -1; 148 149 lbtf_deb_enter(LBTF_DEB_FW); 150 /* 151 * Read priv address from HW 152 */ 153 memset(priv->current_addr, 0xff, ETH_ALEN); 154 ret = lbtf_update_hw_spec(priv); 155 if (ret) { 156 ret = -1; 157 goto done; 158 } 159 160 lbtf_set_mac_control(priv); 161 lbtf_set_radio_control(priv); 162 163 ret = 0; 164done: 165 lbtf_deb_leave_args(LBTF_DEB_FW, "ret: %d", ret); 166 return ret; 167} 168 169/** 170 * This function handles the timeout of command sending. 171 * It will re-send the same command again. 172 */ 173static void command_timer_fn(unsigned long data) 174{ 175 struct lbtf_private *priv = (struct lbtf_private *)data; 176 unsigned long flags; 177 lbtf_deb_enter(LBTF_DEB_CMD); 178 179 spin_lock_irqsave(&priv->driver_lock, flags); 180 181 if (!priv->cur_cmd) { 182 printk(KERN_DEBUG "libertastf: command timer expired; " 183 "no pending command\n"); 184 goto out; 185 } 186 187 printk(KERN_DEBUG "libertas: command %x timed out\n", 188 le16_to_cpu(priv->cur_cmd->cmdbuf->command)); 189 190 priv->cmd_timed_out = 1; 191 queue_work(lbtf_wq, &priv->cmd_work); 192out: 193 spin_unlock_irqrestore(&priv->driver_lock, flags); 194 lbtf_deb_leave(LBTF_DEB_CMD); 195} 196 197static int lbtf_init_adapter(struct lbtf_private *priv) 198{ 199 lbtf_deb_enter(LBTF_DEB_MAIN); 200 memset(priv->current_addr, 0xff, ETH_ALEN); 201 mutex_init(&priv->lock); 202 203 priv->vif = NULL; 204 setup_timer(&priv->command_timer, command_timer_fn, 205 (unsigned long)priv); 206 207 INIT_LIST_HEAD(&priv->cmdfreeq); 208 INIT_LIST_HEAD(&priv->cmdpendingq); 209 210 spin_lock_init(&priv->driver_lock); 211 212 /* Allocate the command buffers */ 213 if (lbtf_allocate_cmd_buffer(priv)) 214 return -1; 215 216 lbtf_deb_leave(LBTF_DEB_MAIN); 217 return 0; 218} 219 220static void lbtf_free_adapter(struct lbtf_private *priv) 221{ 222 lbtf_deb_enter(LBTF_DEB_MAIN); 223 lbtf_free_cmd_buffer(priv); 224 del_timer(&priv->command_timer); 225 lbtf_deb_leave(LBTF_DEB_MAIN); 226} 227 228static int lbtf_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb) 229{ 230 struct lbtf_private *priv = hw->priv; 231 232 priv->skb_to_tx = skb; 233 queue_work(lbtf_wq, &priv->tx_work); 234 /* 235 * queue will be restarted when we receive transmission feedback if 236 * there are no buffered multicast frames to send 237 */ 238 ieee80211_stop_queues(priv->hw); 239 return NETDEV_TX_OK; 240} 241 242static void lbtf_tx_work(struct work_struct *work) 243{ 244 struct lbtf_private *priv = container_of(work, struct lbtf_private, 245 tx_work); 246 unsigned int len; 247 struct ieee80211_tx_info *info; 248 struct txpd *txpd; 249 struct sk_buff *skb = NULL; 250 int err; 251 252 lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX); 253 254 if ((priv->vif->type == NL80211_IFTYPE_AP) && 255 (!skb_queue_empty(&priv->bc_ps_buf))) 256 skb = skb_dequeue(&priv->bc_ps_buf); 257 else if (priv->skb_to_tx) { 258 skb = priv->skb_to_tx; 259 priv->skb_to_tx = NULL; 260 } else { 261 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 262 return; 263 } 264 265 len = skb->len; 266 info = IEEE80211_SKB_CB(skb); 267 txpd = (struct txpd *) skb_push(skb, sizeof(struct txpd)); 268 269 if (priv->surpriseremoved) { 270 dev_kfree_skb_any(skb); 271 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 272 return; 273 } 274 275 memset(txpd, 0, sizeof(struct txpd)); 276 /* Activate per-packet rate selection */ 277 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE | 278 ieee80211_get_tx_rate(priv->hw, info)->hw_value); 279 280 /* copy destination address from 802.11 header */ 281 memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4, 282 ETH_ALEN); 283 txpd->tx_packet_length = cpu_to_le16(len); 284 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd)); 285 lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100)); 286 BUG_ON(priv->tx_skb); 287 spin_lock_irq(&priv->driver_lock); 288 priv->tx_skb = skb; 289 err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len); 290 spin_unlock_irq(&priv->driver_lock); 291 if (err) { 292 dev_kfree_skb_any(skb); 293 priv->tx_skb = NULL; 294 pr_err("TX error: %d", err); 295 } 296 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 297} 298 299static int lbtf_op_start(struct ieee80211_hw *hw) 300{ 301 struct lbtf_private *priv = hw->priv; 302 void *card = priv->card; 303 int ret = -1; 304 305 lbtf_deb_enter(LBTF_DEB_MACOPS); 306 307 if (!priv->fw_ready) 308 /* Upload firmware */ 309 if (priv->hw_prog_firmware(card)) 310 goto err_prog_firmware; 311 312 /* poke the firmware */ 313 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE; 314 priv->radioon = RADIO_ON; 315 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON; 316 ret = lbtf_setup_firmware(priv); 317 if (ret) 318 goto err_prog_firmware; 319 320 if ((priv->fwrelease < LBTF_FW_VER_MIN) || 321 (priv->fwrelease > LBTF_FW_VER_MAX)) { 322 ret = -1; 323 goto err_prog_firmware; 324 } 325 326 printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n"); 327 lbtf_deb_leave(LBTF_DEB_MACOPS); 328 return 0; 329 330err_prog_firmware: 331 priv->hw_reset_device(card); 332 lbtf_deb_leave_args(LBTF_DEB_MACOPS, "error programing fw; ret=%d", ret); 333 return ret; 334} 335 336static void lbtf_op_stop(struct ieee80211_hw *hw) 337{ 338 struct lbtf_private *priv = hw->priv; 339 unsigned long flags; 340 struct sk_buff *skb; 341 342 struct cmd_ctrl_node *cmdnode; 343 344 lbtf_deb_enter(LBTF_DEB_MACOPS); 345 346 /* Flush pending command nodes */ 347 spin_lock_irqsave(&priv->driver_lock, flags); 348 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) { 349 cmdnode->result = -ENOENT; 350 cmdnode->cmdwaitqwoken = 1; 351 wake_up_interruptible(&cmdnode->cmdwait_q); 352 } 353 354 spin_unlock_irqrestore(&priv->driver_lock, flags); 355 cancel_work_sync(&priv->cmd_work); 356 cancel_work_sync(&priv->tx_work); 357 while ((skb = skb_dequeue(&priv->bc_ps_buf))) 358 dev_kfree_skb_any(skb); 359 priv->radioon = RADIO_OFF; 360 lbtf_set_radio_control(priv); 361 362 lbtf_deb_leave(LBTF_DEB_MACOPS); 363} 364 365static int lbtf_op_add_interface(struct ieee80211_hw *hw, 366 struct ieee80211_vif *vif) 367{ 368 struct lbtf_private *priv = hw->priv; 369 lbtf_deb_enter(LBTF_DEB_MACOPS); 370 if (priv->vif != NULL) 371 return -EOPNOTSUPP; 372 373 priv->vif = vif; 374 switch (vif->type) { 375 case NL80211_IFTYPE_MESH_POINT: 376 case NL80211_IFTYPE_AP: 377 lbtf_set_mode(priv, LBTF_AP_MODE); 378 break; 379 case NL80211_IFTYPE_STATION: 380 lbtf_set_mode(priv, LBTF_STA_MODE); 381 break; 382 default: 383 priv->vif = NULL; 384 return -EOPNOTSUPP; 385 } 386 lbtf_set_mac_address(priv, (u8 *) vif->addr); 387 lbtf_deb_leave(LBTF_DEB_MACOPS); 388 return 0; 389} 390 391static void lbtf_op_remove_interface(struct ieee80211_hw *hw, 392 struct ieee80211_vif *vif) 393{ 394 struct lbtf_private *priv = hw->priv; 395 lbtf_deb_enter(LBTF_DEB_MACOPS); 396 397 if (priv->vif->type == NL80211_IFTYPE_AP || 398 priv->vif->type == NL80211_IFTYPE_MESH_POINT) 399 lbtf_beacon_ctrl(priv, 0, 0); 400 lbtf_set_mode(priv, LBTF_PASSIVE_MODE); 401 lbtf_set_bssid(priv, 0, NULL); 402 priv->vif = NULL; 403 lbtf_deb_leave(LBTF_DEB_MACOPS); 404} 405 406static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed) 407{ 408 struct lbtf_private *priv = hw->priv; 409 struct ieee80211_conf *conf = &hw->conf; 410 lbtf_deb_enter(LBTF_DEB_MACOPS); 411 412 if (conf->channel->center_freq != priv->cur_freq) { 413 priv->cur_freq = conf->channel->center_freq; 414 lbtf_set_channel(priv, conf->channel->hw_value); 415 } 416 lbtf_deb_leave(LBTF_DEB_MACOPS); 417 return 0; 418} 419 420static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw, 421 struct netdev_hw_addr_list *mc_list) 422{ 423 struct lbtf_private *priv = hw->priv; 424 int i; 425 struct netdev_hw_addr *ha; 426 int mc_count = netdev_hw_addr_list_count(mc_list); 427 428 if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE) 429 return mc_count; 430 431 priv->nr_of_multicastmacaddr = mc_count; 432 i = 0; 433 netdev_hw_addr_list_for_each(ha, mc_list) 434 memcpy(&priv->multicastlist[i++], ha->addr, ETH_ALEN); 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 int lbtf_op_get_survey(struct ieee80211_hw *hw, int idx, 529 struct survey_info *survey) 530{ 531 struct lbtf_private *priv = hw->priv; 532 struct ieee80211_conf *conf = &hw->conf; 533 534 if (idx != 0) 535 return -ENOENT; 536 537 survey->channel = conf->channel; 538 survey->filled = SURVEY_INFO_NOISE_DBM; 539 survey->noise = priv->noise; 540 541 return 0; 542} 543 544static const struct ieee80211_ops lbtf_ops = { 545 .tx = lbtf_op_tx, 546 .start = lbtf_op_start, 547 .stop = lbtf_op_stop, 548 .add_interface = lbtf_op_add_interface, 549 .remove_interface = lbtf_op_remove_interface, 550 .config = lbtf_op_config, 551 .prepare_multicast = lbtf_op_prepare_multicast, 552 .configure_filter = lbtf_op_configure_filter, 553 .bss_info_changed = lbtf_op_bss_info_changed, 554 .get_survey = lbtf_op_get_survey, 555}; 556 557int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb) 558{ 559 struct ieee80211_rx_status stats; 560 struct rxpd *prxpd; 561 int need_padding; 562 unsigned int flags; 563 struct ieee80211_hdr *hdr; 564 565 lbtf_deb_enter(LBTF_DEB_RX); 566 567 prxpd = (struct rxpd *) skb->data; 568 569 memset(&stats, 0, sizeof(stats)); 570 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK))) 571 stats.flag |= RX_FLAG_FAILED_FCS_CRC; 572 stats.freq = priv->cur_freq; 573 stats.band = IEEE80211_BAND_2GHZ; 574 stats.signal = prxpd->snr; 575 priv->noise = prxpd->nf; 576 /* Marvell rate index has a hole at value 4 */ 577 if (prxpd->rx_rate > 4) 578 --prxpd->rx_rate; 579 stats.rate_idx = prxpd->rx_rate; 580 skb_pull(skb, sizeof(struct rxpd)); 581 582 hdr = (struct ieee80211_hdr *)skb->data; 583 flags = le32_to_cpu(*(__le32 *)(skb->data + 4)); 584 585 need_padding = ieee80211_is_data_qos(hdr->frame_control); 586 need_padding ^= ieee80211_has_a4(hdr->frame_control); 587 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) && 588 (*ieee80211_get_qos_ctl(hdr) & 589 IEEE80211_QOS_CONTROL_A_MSDU_PRESENT); 590 591 if (need_padding) { 592 memmove(skb->data + 2, skb->data, skb->len); 593 skb_reserve(skb, 2); 594 } 595 596 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats)); 597 598 lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n", 599 skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd)); 600 lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data, 601 min_t(unsigned int, skb->len, 100)); 602 603 ieee80211_rx_irqsafe(priv->hw, skb); 604 605 lbtf_deb_leave(LBTF_DEB_RX); 606 return 0; 607} 608EXPORT_SYMBOL_GPL(lbtf_rx); 609 610/** 611 * lbtf_add_card: Add and initialize the card, no fw upload yet. 612 * 613 * @card A pointer to card 614 * 615 * Returns: pointer to struct lbtf_priv. 616 */ 617struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev) 618{ 619 struct ieee80211_hw *hw; 620 struct lbtf_private *priv = NULL; 621 622 lbtf_deb_enter(LBTF_DEB_MAIN); 623 624 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops); 625 if (!hw) 626 goto done; 627 628 priv = hw->priv; 629 if (lbtf_init_adapter(priv)) 630 goto err_init_adapter; 631 632 priv->hw = hw; 633 priv->card = card; 634 priv->tx_skb = NULL; 635 636 hw->queues = 1; 637 hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING; 638 hw->extra_tx_headroom = sizeof(struct txpd); 639 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels)); 640 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates)); 641 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates); 642 priv->band.bitrates = priv->rates; 643 priv->band.n_channels = ARRAY_SIZE(lbtf_channels); 644 priv->band.channels = priv->channels; 645 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band; 646 hw->wiphy->interface_modes = 647 BIT(NL80211_IFTYPE_STATION) | 648 BIT(NL80211_IFTYPE_ADHOC); 649 skb_queue_head_init(&priv->bc_ps_buf); 650 651 SET_IEEE80211_DEV(hw, dmdev); 652 653 INIT_WORK(&priv->cmd_work, lbtf_cmd_work); 654 INIT_WORK(&priv->tx_work, lbtf_tx_work); 655 if (ieee80211_register_hw(hw)) 656 goto err_init_adapter; 657 658 goto done; 659 660err_init_adapter: 661 lbtf_free_adapter(priv); 662 ieee80211_free_hw(hw); 663 priv = NULL; 664 665done: 666 lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv); 667 return priv; 668} 669EXPORT_SYMBOL_GPL(lbtf_add_card); 670 671 672int lbtf_remove_card(struct lbtf_private *priv) 673{ 674 struct ieee80211_hw *hw = priv->hw; 675 676 lbtf_deb_enter(LBTF_DEB_MAIN); 677 678 priv->surpriseremoved = 1; 679 del_timer(&priv->command_timer); 680 lbtf_free_adapter(priv); 681 priv->hw = NULL; 682 ieee80211_unregister_hw(hw); 683 ieee80211_free_hw(hw); 684 685 lbtf_deb_leave(LBTF_DEB_MAIN); 686 return 0; 687} 688EXPORT_SYMBOL_GPL(lbtf_remove_card); 689 690void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail) 691{ 692 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb); 693 694 ieee80211_tx_info_clear_status(info); 695 /* 696 * Commented out, otherwise we never go beyond 1Mbit/s using mac80211 697 * default pid rc algorithm. 698 * 699 * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt; 700 */ 701 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail) 702 info->flags |= IEEE80211_TX_STAT_ACK; 703 skb_pull(priv->tx_skb, sizeof(struct txpd)); 704 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb); 705 priv->tx_skb = NULL; 706 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf)) 707 ieee80211_wake_queues(priv->hw); 708 else 709 queue_work(lbtf_wq, &priv->tx_work); 710} 711EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback); 712 713void lbtf_bcn_sent(struct lbtf_private *priv) 714{ 715 struct sk_buff *skb = NULL; 716 717 if (priv->vif->type != NL80211_IFTYPE_AP) 718 return; 719 720 if (skb_queue_empty(&priv->bc_ps_buf)) { 721 bool tx_buff_bc = 0; 722 723 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) { 724 skb_queue_tail(&priv->bc_ps_buf, skb); 725 tx_buff_bc = 1; 726 } 727 if (tx_buff_bc) { 728 ieee80211_stop_queues(priv->hw); 729 queue_work(lbtf_wq, &priv->tx_work); 730 } 731 } 732 733 skb = ieee80211_beacon_get(priv->hw, priv->vif); 734 735 if (skb) { 736 lbtf_beacon_set(priv, skb); 737 kfree_skb(skb); 738 } 739} 740EXPORT_SYMBOL_GPL(lbtf_bcn_sent); 741 742static int __init lbtf_init_module(void) 743{ 744 lbtf_deb_enter(LBTF_DEB_MAIN); 745 lbtf_wq = create_workqueue("libertastf"); 746 if (lbtf_wq == NULL) { 747 printk(KERN_ERR "libertastf: couldn't create workqueue\n"); 748 return -ENOMEM; 749 } 750 lbtf_deb_leave(LBTF_DEB_MAIN); 751 return 0; 752} 753 754static void __exit lbtf_exit_module(void) 755{ 756 lbtf_deb_enter(LBTF_DEB_MAIN); 757 destroy_workqueue(lbtf_wq); 758 lbtf_deb_leave(LBTF_DEB_MAIN); 759} 760 761module_init(lbtf_init_module); 762module_exit(lbtf_exit_module); 763 764MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library"); 765MODULE_AUTHOR("Cozybit Inc."); 766MODULE_LICENSE("GPL"); 767