main.c revision 675a0b049abf6edf30f8dd84c5610b6edc2296c8
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/hardirq.h> 13#include <linux/slab.h> 14 15#include <linux/etherdevice.h> 16#include <linux/module.h> 17#include "libertas_tf.h" 18 19#define DRIVER_RELEASE_VERSION "004.p0" 20/* thinfirm version: 5.132.X.pX */ 21#define LBTF_FW_VER_MIN 0x05840300 22#define LBTF_FW_VER_MAX 0x0584ffff 23#define QOS_CONTROL_LEN 2 24 25/* Module parameters */ 26unsigned int lbtf_debug; 27EXPORT_SYMBOL_GPL(lbtf_debug); 28module_param_named(libertas_tf_debug, lbtf_debug, int, 0644); 29 30static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION 31#ifdef DEBUG 32 "-dbg" 33#endif 34 ""; 35 36struct workqueue_struct *lbtf_wq; 37 38static const struct ieee80211_channel lbtf_channels[] = { 39 { .center_freq = 2412, .hw_value = 1 }, 40 { .center_freq = 2417, .hw_value = 2 }, 41 { .center_freq = 2422, .hw_value = 3 }, 42 { .center_freq = 2427, .hw_value = 4 }, 43 { .center_freq = 2432, .hw_value = 5 }, 44 { .center_freq = 2437, .hw_value = 6 }, 45 { .center_freq = 2442, .hw_value = 7 }, 46 { .center_freq = 2447, .hw_value = 8 }, 47 { .center_freq = 2452, .hw_value = 9 }, 48 { .center_freq = 2457, .hw_value = 10 }, 49 { .center_freq = 2462, .hw_value = 11 }, 50 { .center_freq = 2467, .hw_value = 12 }, 51 { .center_freq = 2472, .hw_value = 13 }, 52 { .center_freq = 2484, .hw_value = 14 }, 53}; 54 55/* This table contains the hardware specific values for the modulation rates. */ 56static const struct ieee80211_rate lbtf_rates[] = { 57 { .bitrate = 10, 58 .hw_value = 0, }, 59 { .bitrate = 20, 60 .hw_value = 1, 61 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 62 { .bitrate = 55, 63 .hw_value = 2, 64 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 65 { .bitrate = 110, 66 .hw_value = 3, 67 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 68 { .bitrate = 60, 69 .hw_value = 5, 70 .flags = 0 }, 71 { .bitrate = 90, 72 .hw_value = 6, 73 .flags = 0 }, 74 { .bitrate = 120, 75 .hw_value = 7, 76 .flags = 0 }, 77 { .bitrate = 180, 78 .hw_value = 8, 79 .flags = 0 }, 80 { .bitrate = 240, 81 .hw_value = 9, 82 .flags = 0 }, 83 { .bitrate = 360, 84 .hw_value = 10, 85 .flags = 0 }, 86 { .bitrate = 480, 87 .hw_value = 11, 88 .flags = 0 }, 89 { .bitrate = 540, 90 .hw_value = 12, 91 .flags = 0 }, 92}; 93 94static void lbtf_cmd_work(struct work_struct *work) 95{ 96 struct lbtf_private *priv = container_of(work, struct lbtf_private, 97 cmd_work); 98 99 lbtf_deb_enter(LBTF_DEB_CMD); 100 101 spin_lock_irq(&priv->driver_lock); 102 /* command response? */ 103 if (priv->cmd_response_rxed) { 104 priv->cmd_response_rxed = 0; 105 spin_unlock_irq(&priv->driver_lock); 106 lbtf_process_rx_command(priv); 107 spin_lock_irq(&priv->driver_lock); 108 } 109 110 if (priv->cmd_timed_out && priv->cur_cmd) { 111 struct cmd_ctrl_node *cmdnode = priv->cur_cmd; 112 113 if (++priv->nr_retries > 10) { 114 lbtf_complete_command(priv, cmdnode, 115 -ETIMEDOUT); 116 priv->nr_retries = 0; 117 } else { 118 priv->cur_cmd = NULL; 119 120 /* Stick it back at the _top_ of the pending 121 * queue for immediate resubmission */ 122 list_add(&cmdnode->list, &priv->cmdpendingq); 123 } 124 } 125 priv->cmd_timed_out = 0; 126 spin_unlock_irq(&priv->driver_lock); 127 128 if (!priv->fw_ready) { 129 lbtf_deb_leave_args(LBTF_DEB_CMD, "fw not ready"); 130 return; 131 } 132 133 /* Execute the next command */ 134 if (!priv->cur_cmd) 135 lbtf_execute_next_command(priv); 136 137 lbtf_deb_leave(LBTF_DEB_CMD); 138} 139 140/** 141 * lbtf_setup_firmware: initialize firmware. 142 * 143 * @priv A pointer to struct lbtf_private structure 144 * 145 * Returns: 0 on success. 146 */ 147static int lbtf_setup_firmware(struct lbtf_private *priv) 148{ 149 int ret = -1; 150 151 lbtf_deb_enter(LBTF_DEB_FW); 152 /* 153 * Read priv address from HW 154 */ 155 memset(priv->current_addr, 0xff, ETH_ALEN); 156 ret = lbtf_update_hw_spec(priv); 157 if (ret) { 158 ret = -1; 159 goto done; 160 } 161 162 lbtf_set_mac_control(priv); 163 lbtf_set_radio_control(priv); 164 165 ret = 0; 166done: 167 lbtf_deb_leave_args(LBTF_DEB_FW, "ret: %d", ret); 168 return ret; 169} 170 171/** 172 * This function handles the timeout of command sending. 173 * It will re-send the same command again. 174 */ 175static void command_timer_fn(unsigned long data) 176{ 177 struct lbtf_private *priv = (struct lbtf_private *)data; 178 unsigned long flags; 179 lbtf_deb_enter(LBTF_DEB_CMD); 180 181 spin_lock_irqsave(&priv->driver_lock, flags); 182 183 if (!priv->cur_cmd) { 184 printk(KERN_DEBUG "libertastf: command timer expired; " 185 "no pending command\n"); 186 goto out; 187 } 188 189 printk(KERN_DEBUG "libertas: command %x timed out\n", 190 le16_to_cpu(priv->cur_cmd->cmdbuf->command)); 191 192 priv->cmd_timed_out = 1; 193 queue_work(lbtf_wq, &priv->cmd_work); 194out: 195 spin_unlock_irqrestore(&priv->driver_lock, flags); 196 lbtf_deb_leave(LBTF_DEB_CMD); 197} 198 199static int lbtf_init_adapter(struct lbtf_private *priv) 200{ 201 lbtf_deb_enter(LBTF_DEB_MAIN); 202 memset(priv->current_addr, 0xff, ETH_ALEN); 203 mutex_init(&priv->lock); 204 205 priv->vif = NULL; 206 setup_timer(&priv->command_timer, command_timer_fn, 207 (unsigned long)priv); 208 209 INIT_LIST_HEAD(&priv->cmdfreeq); 210 INIT_LIST_HEAD(&priv->cmdpendingq); 211 212 spin_lock_init(&priv->driver_lock); 213 214 /* Allocate the command buffers */ 215 if (lbtf_allocate_cmd_buffer(priv)) 216 return -1; 217 218 lbtf_deb_leave(LBTF_DEB_MAIN); 219 return 0; 220} 221 222static void lbtf_free_adapter(struct lbtf_private *priv) 223{ 224 lbtf_deb_enter(LBTF_DEB_MAIN); 225 lbtf_free_cmd_buffer(priv); 226 del_timer(&priv->command_timer); 227 lbtf_deb_leave(LBTF_DEB_MAIN); 228} 229 230static void lbtf_op_tx(struct ieee80211_hw *hw, 231 struct ieee80211_tx_control *control, 232 struct sk_buff *skb) 233{ 234 struct lbtf_private *priv = hw->priv; 235 236 priv->skb_to_tx = skb; 237 queue_work(lbtf_wq, &priv->tx_work); 238 /* 239 * queue will be restarted when we receive transmission feedback if 240 * there are no buffered multicast frames to send 241 */ 242 ieee80211_stop_queues(priv->hw); 243} 244 245static void lbtf_tx_work(struct work_struct *work) 246{ 247 struct lbtf_private *priv = container_of(work, struct lbtf_private, 248 tx_work); 249 unsigned int len; 250 struct ieee80211_tx_info *info; 251 struct txpd *txpd; 252 struct sk_buff *skb = NULL; 253 int err; 254 255 lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX); 256 257 if ((priv->vif->type == NL80211_IFTYPE_AP) && 258 (!skb_queue_empty(&priv->bc_ps_buf))) 259 skb = skb_dequeue(&priv->bc_ps_buf); 260 else if (priv->skb_to_tx) { 261 skb = priv->skb_to_tx; 262 priv->skb_to_tx = NULL; 263 } else { 264 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 265 return; 266 } 267 268 len = skb->len; 269 info = IEEE80211_SKB_CB(skb); 270 txpd = (struct txpd *) skb_push(skb, sizeof(struct txpd)); 271 272 if (priv->surpriseremoved) { 273 dev_kfree_skb_any(skb); 274 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 275 return; 276 } 277 278 memset(txpd, 0, sizeof(struct txpd)); 279 /* Activate per-packet rate selection */ 280 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE | 281 ieee80211_get_tx_rate(priv->hw, info)->hw_value); 282 283 /* copy destination address from 802.11 header */ 284 memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4, 285 ETH_ALEN); 286 txpd->tx_packet_length = cpu_to_le16(len); 287 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd)); 288 lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100)); 289 BUG_ON(priv->tx_skb); 290 spin_lock_irq(&priv->driver_lock); 291 priv->tx_skb = skb; 292 err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len); 293 spin_unlock_irq(&priv->driver_lock); 294 if (err) { 295 dev_kfree_skb_any(skb); 296 priv->tx_skb = NULL; 297 pr_err("TX error: %d", err); 298 } 299 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 300} 301 302static int lbtf_op_start(struct ieee80211_hw *hw) 303{ 304 struct lbtf_private *priv = hw->priv; 305 void *card = priv->card; 306 int ret = -1; 307 308 lbtf_deb_enter(LBTF_DEB_MACOPS); 309 310 if (!priv->fw_ready) 311 /* Upload firmware */ 312 if (priv->hw_prog_firmware(card)) 313 goto err_prog_firmware; 314 315 /* poke the firmware */ 316 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE; 317 priv->radioon = RADIO_ON; 318 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON; 319 ret = lbtf_setup_firmware(priv); 320 if (ret) 321 goto err_prog_firmware; 322 323 if ((priv->fwrelease < LBTF_FW_VER_MIN) || 324 (priv->fwrelease > LBTF_FW_VER_MAX)) { 325 ret = -1; 326 goto err_prog_firmware; 327 } 328 329 printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n"); 330 lbtf_deb_leave(LBTF_DEB_MACOPS); 331 return 0; 332 333err_prog_firmware: 334 priv->hw_reset_device(card); 335 lbtf_deb_leave_args(LBTF_DEB_MACOPS, "error programing fw; ret=%d", ret); 336 return ret; 337} 338 339static void lbtf_op_stop(struct ieee80211_hw *hw) 340{ 341 struct lbtf_private *priv = hw->priv; 342 unsigned long flags; 343 struct sk_buff *skb; 344 345 struct cmd_ctrl_node *cmdnode; 346 347 lbtf_deb_enter(LBTF_DEB_MACOPS); 348 349 /* Flush pending command nodes */ 350 spin_lock_irqsave(&priv->driver_lock, flags); 351 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) { 352 cmdnode->result = -ENOENT; 353 cmdnode->cmdwaitqwoken = 1; 354 wake_up_interruptible(&cmdnode->cmdwait_q); 355 } 356 357 spin_unlock_irqrestore(&priv->driver_lock, flags); 358 cancel_work_sync(&priv->cmd_work); 359 cancel_work_sync(&priv->tx_work); 360 while ((skb = skb_dequeue(&priv->bc_ps_buf))) 361 dev_kfree_skb_any(skb); 362 priv->radioon = RADIO_OFF; 363 lbtf_set_radio_control(priv); 364 365 lbtf_deb_leave(LBTF_DEB_MACOPS); 366} 367 368static int lbtf_op_add_interface(struct ieee80211_hw *hw, 369 struct ieee80211_vif *vif) 370{ 371 struct lbtf_private *priv = hw->priv; 372 lbtf_deb_enter(LBTF_DEB_MACOPS); 373 if (priv->vif != NULL) 374 return -EOPNOTSUPP; 375 376 priv->vif = vif; 377 switch (vif->type) { 378 case NL80211_IFTYPE_MESH_POINT: 379 case NL80211_IFTYPE_AP: 380 lbtf_set_mode(priv, LBTF_AP_MODE); 381 break; 382 case NL80211_IFTYPE_STATION: 383 lbtf_set_mode(priv, LBTF_STA_MODE); 384 break; 385 default: 386 priv->vif = NULL; 387 return -EOPNOTSUPP; 388 } 389 lbtf_set_mac_address(priv, (u8 *) vif->addr); 390 lbtf_deb_leave(LBTF_DEB_MACOPS); 391 return 0; 392} 393 394static void lbtf_op_remove_interface(struct ieee80211_hw *hw, 395 struct ieee80211_vif *vif) 396{ 397 struct lbtf_private *priv = hw->priv; 398 lbtf_deb_enter(LBTF_DEB_MACOPS); 399 400 if (priv->vif->type == NL80211_IFTYPE_AP || 401 priv->vif->type == NL80211_IFTYPE_MESH_POINT) 402 lbtf_beacon_ctrl(priv, 0, 0); 403 lbtf_set_mode(priv, LBTF_PASSIVE_MODE); 404 lbtf_set_bssid(priv, 0, NULL); 405 priv->vif = NULL; 406 lbtf_deb_leave(LBTF_DEB_MACOPS); 407} 408 409static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed) 410{ 411 struct lbtf_private *priv = hw->priv; 412 struct ieee80211_conf *conf = &hw->conf; 413 lbtf_deb_enter(LBTF_DEB_MACOPS); 414 415 if (conf->chandef.chan->center_freq != priv->cur_freq) { 416 priv->cur_freq = conf->chandef.chan->center_freq; 417 lbtf_set_channel(priv, conf->chandef.chan->hw_value); 418 } 419 lbtf_deb_leave(LBTF_DEB_MACOPS); 420 return 0; 421} 422 423static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw, 424 struct netdev_hw_addr_list *mc_list) 425{ 426 struct lbtf_private *priv = hw->priv; 427 int i; 428 struct netdev_hw_addr *ha; 429 int mc_count = netdev_hw_addr_list_count(mc_list); 430 431 if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE) 432 return mc_count; 433 434 priv->nr_of_multicastmacaddr = mc_count; 435 i = 0; 436 netdev_hw_addr_list_for_each(ha, mc_list) 437 memcpy(&priv->multicastlist[i++], ha->addr, ETH_ALEN); 438 439 return mc_count; 440} 441 442#define SUPPORTED_FIF_FLAGS (FIF_PROMISC_IN_BSS | FIF_ALLMULTI) 443static void lbtf_op_configure_filter(struct ieee80211_hw *hw, 444 unsigned int changed_flags, 445 unsigned int *new_flags, 446 u64 multicast) 447{ 448 struct lbtf_private *priv = hw->priv; 449 int old_mac_control = priv->mac_control; 450 451 lbtf_deb_enter(LBTF_DEB_MACOPS); 452 453 changed_flags &= SUPPORTED_FIF_FLAGS; 454 *new_flags &= SUPPORTED_FIF_FLAGS; 455 456 if (!changed_flags) { 457 lbtf_deb_leave(LBTF_DEB_MACOPS); 458 return; 459 } 460 461 if (*new_flags & (FIF_PROMISC_IN_BSS)) 462 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE; 463 else 464 priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE; 465 if (*new_flags & (FIF_ALLMULTI) || 466 multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) { 467 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE; 468 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE; 469 } else if (multicast) { 470 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE; 471 priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE; 472 lbtf_cmd_set_mac_multicast_addr(priv); 473 } else { 474 priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE | 475 CMD_ACT_MAC_ALL_MULTICAST_ENABLE); 476 if (priv->nr_of_multicastmacaddr) { 477 priv->nr_of_multicastmacaddr = 0; 478 lbtf_cmd_set_mac_multicast_addr(priv); 479 } 480 } 481 482 483 if (priv->mac_control != old_mac_control) 484 lbtf_set_mac_control(priv); 485 486 lbtf_deb_leave(LBTF_DEB_MACOPS); 487} 488 489static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw, 490 struct ieee80211_vif *vif, 491 struct ieee80211_bss_conf *bss_conf, 492 u32 changes) 493{ 494 struct lbtf_private *priv = hw->priv; 495 struct sk_buff *beacon; 496 lbtf_deb_enter(LBTF_DEB_MACOPS); 497 498 if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_INT)) { 499 switch (priv->vif->type) { 500 case NL80211_IFTYPE_AP: 501 case NL80211_IFTYPE_MESH_POINT: 502 beacon = ieee80211_beacon_get(hw, vif); 503 if (beacon) { 504 lbtf_beacon_set(priv, beacon); 505 kfree_skb(beacon); 506 lbtf_beacon_ctrl(priv, 1, 507 bss_conf->beacon_int); 508 } 509 break; 510 default: 511 break; 512 } 513 } 514 515 if (changes & BSS_CHANGED_BSSID) { 516 bool activate = !is_zero_ether_addr(bss_conf->bssid); 517 lbtf_set_bssid(priv, activate, bss_conf->bssid); 518 } 519 520 if (changes & BSS_CHANGED_ERP_PREAMBLE) { 521 if (bss_conf->use_short_preamble) 522 priv->preamble = CMD_TYPE_SHORT_PREAMBLE; 523 else 524 priv->preamble = CMD_TYPE_LONG_PREAMBLE; 525 lbtf_set_radio_control(priv); 526 } 527 528 lbtf_deb_leave(LBTF_DEB_MACOPS); 529} 530 531static int lbtf_op_get_survey(struct ieee80211_hw *hw, int idx, 532 struct survey_info *survey) 533{ 534 struct lbtf_private *priv = hw->priv; 535 struct ieee80211_conf *conf = &hw->conf; 536 537 if (idx != 0) 538 return -ENOENT; 539 540 survey->channel = conf->chandef.chan; 541 survey->filled = SURVEY_INFO_NOISE_DBM; 542 survey->noise = priv->noise; 543 544 return 0; 545} 546 547static const struct ieee80211_ops lbtf_ops = { 548 .tx = lbtf_op_tx, 549 .start = lbtf_op_start, 550 .stop = lbtf_op_stop, 551 .add_interface = lbtf_op_add_interface, 552 .remove_interface = lbtf_op_remove_interface, 553 .config = lbtf_op_config, 554 .prepare_multicast = lbtf_op_prepare_multicast, 555 .configure_filter = lbtf_op_configure_filter, 556 .bss_info_changed = lbtf_op_bss_info_changed, 557 .get_survey = lbtf_op_get_survey, 558}; 559 560int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb) 561{ 562 struct ieee80211_rx_status stats; 563 struct rxpd *prxpd; 564 int need_padding; 565 unsigned int flags; 566 struct ieee80211_hdr *hdr; 567 568 lbtf_deb_enter(LBTF_DEB_RX); 569 570 prxpd = (struct rxpd *) skb->data; 571 572 memset(&stats, 0, sizeof(stats)); 573 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK))) 574 stats.flag |= RX_FLAG_FAILED_FCS_CRC; 575 stats.freq = priv->cur_freq; 576 stats.band = IEEE80211_BAND_2GHZ; 577 stats.signal = prxpd->snr; 578 priv->noise = prxpd->nf; 579 /* Marvell rate index has a hole at value 4 */ 580 if (prxpd->rx_rate > 4) 581 --prxpd->rx_rate; 582 stats.rate_idx = prxpd->rx_rate; 583 skb_pull(skb, sizeof(struct rxpd)); 584 585 hdr = (struct ieee80211_hdr *)skb->data; 586 flags = le32_to_cpu(*(__le32 *)(skb->data + 4)); 587 588 need_padding = ieee80211_is_data_qos(hdr->frame_control); 589 need_padding ^= ieee80211_has_a4(hdr->frame_control); 590 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) && 591 (*ieee80211_get_qos_ctl(hdr) & 592 IEEE80211_QOS_CTL_A_MSDU_PRESENT); 593 594 if (need_padding) { 595 memmove(skb->data + 2, skb->data, skb->len); 596 skb_reserve(skb, 2); 597 } 598 599 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats)); 600 601 lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n", 602 skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd)); 603 lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data, 604 min_t(unsigned int, skb->len, 100)); 605 606 ieee80211_rx_irqsafe(priv->hw, skb); 607 608 lbtf_deb_leave(LBTF_DEB_RX); 609 return 0; 610} 611EXPORT_SYMBOL_GPL(lbtf_rx); 612 613/** 614 * lbtf_add_card: Add and initialize the card, no fw upload yet. 615 * 616 * @card A pointer to card 617 * 618 * Returns: pointer to struct lbtf_priv. 619 */ 620struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev) 621{ 622 struct ieee80211_hw *hw; 623 struct lbtf_private *priv = NULL; 624 625 lbtf_deb_enter(LBTF_DEB_MAIN); 626 627 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops); 628 if (!hw) 629 goto done; 630 631 priv = hw->priv; 632 if (lbtf_init_adapter(priv)) 633 goto err_init_adapter; 634 635 priv->hw = hw; 636 priv->card = card; 637 priv->tx_skb = NULL; 638 639 hw->queues = 1; 640 hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING; 641 hw->extra_tx_headroom = sizeof(struct txpd); 642 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels)); 643 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates)); 644 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates); 645 priv->band.bitrates = priv->rates; 646 priv->band.n_channels = ARRAY_SIZE(lbtf_channels); 647 priv->band.channels = priv->channels; 648 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band; 649 hw->wiphy->interface_modes = 650 BIT(NL80211_IFTYPE_STATION) | 651 BIT(NL80211_IFTYPE_ADHOC); 652 skb_queue_head_init(&priv->bc_ps_buf); 653 654 SET_IEEE80211_DEV(hw, dmdev); 655 656 INIT_WORK(&priv->cmd_work, lbtf_cmd_work); 657 INIT_WORK(&priv->tx_work, lbtf_tx_work); 658 if (ieee80211_register_hw(hw)) 659 goto err_init_adapter; 660 661 goto done; 662 663err_init_adapter: 664 lbtf_free_adapter(priv); 665 ieee80211_free_hw(hw); 666 priv = NULL; 667 668done: 669 lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv); 670 return priv; 671} 672EXPORT_SYMBOL_GPL(lbtf_add_card); 673 674 675int lbtf_remove_card(struct lbtf_private *priv) 676{ 677 struct ieee80211_hw *hw = priv->hw; 678 679 lbtf_deb_enter(LBTF_DEB_MAIN); 680 681 priv->surpriseremoved = 1; 682 del_timer(&priv->command_timer); 683 lbtf_free_adapter(priv); 684 priv->hw = NULL; 685 ieee80211_unregister_hw(hw); 686 ieee80211_free_hw(hw); 687 688 lbtf_deb_leave(LBTF_DEB_MAIN); 689 return 0; 690} 691EXPORT_SYMBOL_GPL(lbtf_remove_card); 692 693void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail) 694{ 695 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb); 696 697 ieee80211_tx_info_clear_status(info); 698 /* 699 * Commented out, otherwise we never go beyond 1Mbit/s using mac80211 700 * default pid rc algorithm. 701 * 702 * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt; 703 */ 704 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail) 705 info->flags |= IEEE80211_TX_STAT_ACK; 706 skb_pull(priv->tx_skb, sizeof(struct txpd)); 707 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb); 708 priv->tx_skb = NULL; 709 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf)) 710 ieee80211_wake_queues(priv->hw); 711 else 712 queue_work(lbtf_wq, &priv->tx_work); 713} 714EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback); 715 716void lbtf_bcn_sent(struct lbtf_private *priv) 717{ 718 struct sk_buff *skb = NULL; 719 720 if (priv->vif->type != NL80211_IFTYPE_AP) 721 return; 722 723 if (skb_queue_empty(&priv->bc_ps_buf)) { 724 bool tx_buff_bc = false; 725 726 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) { 727 skb_queue_tail(&priv->bc_ps_buf, skb); 728 tx_buff_bc = true; 729 } 730 if (tx_buff_bc) { 731 ieee80211_stop_queues(priv->hw); 732 queue_work(lbtf_wq, &priv->tx_work); 733 } 734 } 735 736 skb = ieee80211_beacon_get(priv->hw, priv->vif); 737 738 if (skb) { 739 lbtf_beacon_set(priv, skb); 740 kfree_skb(skb); 741 } 742} 743EXPORT_SYMBOL_GPL(lbtf_bcn_sent); 744 745static int __init lbtf_init_module(void) 746{ 747 lbtf_deb_enter(LBTF_DEB_MAIN); 748 lbtf_wq = create_workqueue("libertastf"); 749 if (lbtf_wq == NULL) { 750 printk(KERN_ERR "libertastf: couldn't create workqueue\n"); 751 return -ENOMEM; 752 } 753 lbtf_deb_leave(LBTF_DEB_MAIN); 754 return 0; 755} 756 757static void __exit lbtf_exit_module(void) 758{ 759 lbtf_deb_enter(LBTF_DEB_MAIN); 760 destroy_workqueue(lbtf_wq); 761 lbtf_deb_leave(LBTF_DEB_MAIN); 762} 763 764module_init(lbtf_init_module); 765module_exit(lbtf_exit_module); 766 767MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library"); 768MODULE_AUTHOR("Cozybit Inc."); 769MODULE_LICENSE("GPL"); 770