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, struct sk_buff *skb) 231{ 232 struct lbtf_private *priv = hw->priv; 233 234 priv->skb_to_tx = skb; 235 queue_work(lbtf_wq, &priv->tx_work); 236 /* 237 * queue will be restarted when we receive transmission feedback if 238 * there are no buffered multicast frames to send 239 */ 240 ieee80211_stop_queues(priv->hw); 241} 242 243static void lbtf_tx_work(struct work_struct *work) 244{ 245 struct lbtf_private *priv = container_of(work, struct lbtf_private, 246 tx_work); 247 unsigned int len; 248 struct ieee80211_tx_info *info; 249 struct txpd *txpd; 250 struct sk_buff *skb = NULL; 251 int err; 252 253 lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX); 254 255 if ((priv->vif->type == NL80211_IFTYPE_AP) && 256 (!skb_queue_empty(&priv->bc_ps_buf))) 257 skb = skb_dequeue(&priv->bc_ps_buf); 258 else if (priv->skb_to_tx) { 259 skb = priv->skb_to_tx; 260 priv->skb_to_tx = NULL; 261 } else { 262 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 263 return; 264 } 265 266 len = skb->len; 267 info = IEEE80211_SKB_CB(skb); 268 txpd = (struct txpd *) skb_push(skb, sizeof(struct txpd)); 269 270 if (priv->surpriseremoved) { 271 dev_kfree_skb_any(skb); 272 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 273 return; 274 } 275 276 memset(txpd, 0, sizeof(struct txpd)); 277 /* Activate per-packet rate selection */ 278 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE | 279 ieee80211_get_tx_rate(priv->hw, info)->hw_value); 280 281 /* copy destination address from 802.11 header */ 282 memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4, 283 ETH_ALEN); 284 txpd->tx_packet_length = cpu_to_le16(len); 285 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd)); 286 lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100)); 287 BUG_ON(priv->tx_skb); 288 spin_lock_irq(&priv->driver_lock); 289 priv->tx_skb = skb; 290 err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len); 291 spin_unlock_irq(&priv->driver_lock); 292 if (err) { 293 dev_kfree_skb_any(skb); 294 priv->tx_skb = NULL; 295 pr_err("TX error: %d", err); 296 } 297 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 298} 299 300static int lbtf_op_start(struct ieee80211_hw *hw) 301{ 302 struct lbtf_private *priv = hw->priv; 303 void *card = priv->card; 304 int ret = -1; 305 306 lbtf_deb_enter(LBTF_DEB_MACOPS); 307 308 if (!priv->fw_ready) 309 /* Upload firmware */ 310 if (priv->hw_prog_firmware(card)) 311 goto err_prog_firmware; 312 313 /* poke the firmware */ 314 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE; 315 priv->radioon = RADIO_ON; 316 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON; 317 ret = lbtf_setup_firmware(priv); 318 if (ret) 319 goto err_prog_firmware; 320 321 if ((priv->fwrelease < LBTF_FW_VER_MIN) || 322 (priv->fwrelease > LBTF_FW_VER_MAX)) { 323 ret = -1; 324 goto err_prog_firmware; 325 } 326 327 printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n"); 328 lbtf_deb_leave(LBTF_DEB_MACOPS); 329 return 0; 330 331err_prog_firmware: 332 priv->hw_reset_device(card); 333 lbtf_deb_leave_args(LBTF_DEB_MACOPS, "error programing fw; ret=%d", ret); 334 return ret; 335} 336 337static void lbtf_op_stop(struct ieee80211_hw *hw) 338{ 339 struct lbtf_private *priv = hw->priv; 340 unsigned long flags; 341 struct sk_buff *skb; 342 343 struct cmd_ctrl_node *cmdnode; 344 345 lbtf_deb_enter(LBTF_DEB_MACOPS); 346 347 /* Flush pending command nodes */ 348 spin_lock_irqsave(&priv->driver_lock, flags); 349 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) { 350 cmdnode->result = -ENOENT; 351 cmdnode->cmdwaitqwoken = 1; 352 wake_up_interruptible(&cmdnode->cmdwait_q); 353 } 354 355 spin_unlock_irqrestore(&priv->driver_lock, flags); 356 cancel_work_sync(&priv->cmd_work); 357 cancel_work_sync(&priv->tx_work); 358 while ((skb = skb_dequeue(&priv->bc_ps_buf))) 359 dev_kfree_skb_any(skb); 360 priv->radioon = RADIO_OFF; 361 lbtf_set_radio_control(priv); 362 363 lbtf_deb_leave(LBTF_DEB_MACOPS); 364} 365 366static int lbtf_op_add_interface(struct ieee80211_hw *hw, 367 struct ieee80211_vif *vif) 368{ 369 struct lbtf_private *priv = hw->priv; 370 lbtf_deb_enter(LBTF_DEB_MACOPS); 371 if (priv->vif != NULL) 372 return -EOPNOTSUPP; 373 374 priv->vif = vif; 375 switch (vif->type) { 376 case NL80211_IFTYPE_MESH_POINT: 377 case NL80211_IFTYPE_AP: 378 lbtf_set_mode(priv, LBTF_AP_MODE); 379 break; 380 case NL80211_IFTYPE_STATION: 381 lbtf_set_mode(priv, LBTF_STA_MODE); 382 break; 383 default: 384 priv->vif = NULL; 385 return -EOPNOTSUPP; 386 } 387 lbtf_set_mac_address(priv, (u8 *) vif->addr); 388 lbtf_deb_leave(LBTF_DEB_MACOPS); 389 return 0; 390} 391 392static void lbtf_op_remove_interface(struct ieee80211_hw *hw, 393 struct ieee80211_vif *vif) 394{ 395 struct lbtf_private *priv = hw->priv; 396 lbtf_deb_enter(LBTF_DEB_MACOPS); 397 398 if (priv->vif->type == NL80211_IFTYPE_AP || 399 priv->vif->type == NL80211_IFTYPE_MESH_POINT) 400 lbtf_beacon_ctrl(priv, 0, 0); 401 lbtf_set_mode(priv, LBTF_PASSIVE_MODE); 402 lbtf_set_bssid(priv, 0, NULL); 403 priv->vif = NULL; 404 lbtf_deb_leave(LBTF_DEB_MACOPS); 405} 406 407static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed) 408{ 409 struct lbtf_private *priv = hw->priv; 410 struct ieee80211_conf *conf = &hw->conf; 411 lbtf_deb_enter(LBTF_DEB_MACOPS); 412 413 if (conf->channel->center_freq != priv->cur_freq) { 414 priv->cur_freq = conf->channel->center_freq; 415 lbtf_set_channel(priv, conf->channel->hw_value); 416 } 417 lbtf_deb_leave(LBTF_DEB_MACOPS); 418 return 0; 419} 420 421static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw, 422 struct netdev_hw_addr_list *mc_list) 423{ 424 struct lbtf_private *priv = hw->priv; 425 int i; 426 struct netdev_hw_addr *ha; 427 int mc_count = netdev_hw_addr_list_count(mc_list); 428 429 if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE) 430 return mc_count; 431 432 priv->nr_of_multicastmacaddr = mc_count; 433 i = 0; 434 netdev_hw_addr_list_for_each(ha, mc_list) 435 memcpy(&priv->multicastlist[i++], ha->addr, ETH_ALEN); 436 437 return mc_count; 438} 439 440#define SUPPORTED_FIF_FLAGS (FIF_PROMISC_IN_BSS | FIF_ALLMULTI) 441static void lbtf_op_configure_filter(struct ieee80211_hw *hw, 442 unsigned int changed_flags, 443 unsigned int *new_flags, 444 u64 multicast) 445{ 446 struct lbtf_private *priv = hw->priv; 447 int old_mac_control = priv->mac_control; 448 449 lbtf_deb_enter(LBTF_DEB_MACOPS); 450 451 changed_flags &= SUPPORTED_FIF_FLAGS; 452 *new_flags &= SUPPORTED_FIF_FLAGS; 453 454 if (!changed_flags) { 455 lbtf_deb_leave(LBTF_DEB_MACOPS); 456 return; 457 } 458 459 if (*new_flags & (FIF_PROMISC_IN_BSS)) 460 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE; 461 else 462 priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE; 463 if (*new_flags & (FIF_ALLMULTI) || 464 multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) { 465 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE; 466 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE; 467 } else if (multicast) { 468 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE; 469 priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE; 470 lbtf_cmd_set_mac_multicast_addr(priv); 471 } else { 472 priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE | 473 CMD_ACT_MAC_ALL_MULTICAST_ENABLE); 474 if (priv->nr_of_multicastmacaddr) { 475 priv->nr_of_multicastmacaddr = 0; 476 lbtf_cmd_set_mac_multicast_addr(priv); 477 } 478 } 479 480 481 if (priv->mac_control != old_mac_control) 482 lbtf_set_mac_control(priv); 483 484 lbtf_deb_leave(LBTF_DEB_MACOPS); 485} 486 487static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw, 488 struct ieee80211_vif *vif, 489 struct ieee80211_bss_conf *bss_conf, 490 u32 changes) 491{ 492 struct lbtf_private *priv = hw->priv; 493 struct sk_buff *beacon; 494 lbtf_deb_enter(LBTF_DEB_MACOPS); 495 496 if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_INT)) { 497 switch (priv->vif->type) { 498 case NL80211_IFTYPE_AP: 499 case NL80211_IFTYPE_MESH_POINT: 500 beacon = ieee80211_beacon_get(hw, vif); 501 if (beacon) { 502 lbtf_beacon_set(priv, beacon); 503 kfree_skb(beacon); 504 lbtf_beacon_ctrl(priv, 1, 505 bss_conf->beacon_int); 506 } 507 break; 508 default: 509 break; 510 } 511 } 512 513 if (changes & BSS_CHANGED_BSSID) { 514 bool activate = !is_zero_ether_addr(bss_conf->bssid); 515 lbtf_set_bssid(priv, activate, bss_conf->bssid); 516 } 517 518 if (changes & BSS_CHANGED_ERP_PREAMBLE) { 519 if (bss_conf->use_short_preamble) 520 priv->preamble = CMD_TYPE_SHORT_PREAMBLE; 521 else 522 priv->preamble = CMD_TYPE_LONG_PREAMBLE; 523 lbtf_set_radio_control(priv); 524 } 525 526 lbtf_deb_leave(LBTF_DEB_MACOPS); 527} 528 529static int lbtf_op_get_survey(struct ieee80211_hw *hw, int idx, 530 struct survey_info *survey) 531{ 532 struct lbtf_private *priv = hw->priv; 533 struct ieee80211_conf *conf = &hw->conf; 534 535 if (idx != 0) 536 return -ENOENT; 537 538 survey->channel = conf->channel; 539 survey->filled = SURVEY_INFO_NOISE_DBM; 540 survey->noise = priv->noise; 541 542 return 0; 543} 544 545static const struct ieee80211_ops lbtf_ops = { 546 .tx = lbtf_op_tx, 547 .start = lbtf_op_start, 548 .stop = lbtf_op_stop, 549 .add_interface = lbtf_op_add_interface, 550 .remove_interface = lbtf_op_remove_interface, 551 .config = lbtf_op_config, 552 .prepare_multicast = lbtf_op_prepare_multicast, 553 .configure_filter = lbtf_op_configure_filter, 554 .bss_info_changed = lbtf_op_bss_info_changed, 555 .get_survey = lbtf_op_get_survey, 556}; 557 558int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb) 559{ 560 struct ieee80211_rx_status stats; 561 struct rxpd *prxpd; 562 int need_padding; 563 unsigned int flags; 564 struct ieee80211_hdr *hdr; 565 566 lbtf_deb_enter(LBTF_DEB_RX); 567 568 prxpd = (struct rxpd *) skb->data; 569 570 memset(&stats, 0, sizeof(stats)); 571 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK))) 572 stats.flag |= RX_FLAG_FAILED_FCS_CRC; 573 stats.freq = priv->cur_freq; 574 stats.band = IEEE80211_BAND_2GHZ; 575 stats.signal = prxpd->snr; 576 priv->noise = prxpd->nf; 577 /* Marvell rate index has a hole at value 4 */ 578 if (prxpd->rx_rate > 4) 579 --prxpd->rx_rate; 580 stats.rate_idx = prxpd->rx_rate; 581 skb_pull(skb, sizeof(struct rxpd)); 582 583 hdr = (struct ieee80211_hdr *)skb->data; 584 flags = le32_to_cpu(*(__le32 *)(skb->data + 4)); 585 586 need_padding = ieee80211_is_data_qos(hdr->frame_control); 587 need_padding ^= ieee80211_has_a4(hdr->frame_control); 588 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) && 589 (*ieee80211_get_qos_ctl(hdr) & 590 IEEE80211_QOS_CTL_A_MSDU_PRESENT); 591 592 if (need_padding) { 593 memmove(skb->data + 2, skb->data, skb->len); 594 skb_reserve(skb, 2); 595 } 596 597 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats)); 598 599 lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n", 600 skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd)); 601 lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data, 602 min_t(unsigned int, skb->len, 100)); 603 604 ieee80211_rx_irqsafe(priv->hw, skb); 605 606 lbtf_deb_leave(LBTF_DEB_RX); 607 return 0; 608} 609EXPORT_SYMBOL_GPL(lbtf_rx); 610 611/** 612 * lbtf_add_card: Add and initialize the card, no fw upload yet. 613 * 614 * @card A pointer to card 615 * 616 * Returns: pointer to struct lbtf_priv. 617 */ 618struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev) 619{ 620 struct ieee80211_hw *hw; 621 struct lbtf_private *priv = NULL; 622 623 lbtf_deb_enter(LBTF_DEB_MAIN); 624 625 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops); 626 if (!hw) 627 goto done; 628 629 priv = hw->priv; 630 if (lbtf_init_adapter(priv)) 631 goto err_init_adapter; 632 633 priv->hw = hw; 634 priv->card = card; 635 priv->tx_skb = NULL; 636 637 hw->queues = 1; 638 hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING; 639 hw->extra_tx_headroom = sizeof(struct txpd); 640 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels)); 641 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates)); 642 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates); 643 priv->band.bitrates = priv->rates; 644 priv->band.n_channels = ARRAY_SIZE(lbtf_channels); 645 priv->band.channels = priv->channels; 646 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band; 647 hw->wiphy->interface_modes = 648 BIT(NL80211_IFTYPE_STATION) | 649 BIT(NL80211_IFTYPE_ADHOC); 650 skb_queue_head_init(&priv->bc_ps_buf); 651 652 SET_IEEE80211_DEV(hw, dmdev); 653 654 INIT_WORK(&priv->cmd_work, lbtf_cmd_work); 655 INIT_WORK(&priv->tx_work, lbtf_tx_work); 656 if (ieee80211_register_hw(hw)) 657 goto err_init_adapter; 658 659 goto done; 660 661err_init_adapter: 662 lbtf_free_adapter(priv); 663 ieee80211_free_hw(hw); 664 priv = NULL; 665 666done: 667 lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv); 668 return priv; 669} 670EXPORT_SYMBOL_GPL(lbtf_add_card); 671 672 673int lbtf_remove_card(struct lbtf_private *priv) 674{ 675 struct ieee80211_hw *hw = priv->hw; 676 677 lbtf_deb_enter(LBTF_DEB_MAIN); 678 679 priv->surpriseremoved = 1; 680 del_timer(&priv->command_timer); 681 lbtf_free_adapter(priv); 682 priv->hw = NULL; 683 ieee80211_unregister_hw(hw); 684 ieee80211_free_hw(hw); 685 686 lbtf_deb_leave(LBTF_DEB_MAIN); 687 return 0; 688} 689EXPORT_SYMBOL_GPL(lbtf_remove_card); 690 691void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail) 692{ 693 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb); 694 695 ieee80211_tx_info_clear_status(info); 696 /* 697 * Commented out, otherwise we never go beyond 1Mbit/s using mac80211 698 * default pid rc algorithm. 699 * 700 * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt; 701 */ 702 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail) 703 info->flags |= IEEE80211_TX_STAT_ACK; 704 skb_pull(priv->tx_skb, sizeof(struct txpd)); 705 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb); 706 priv->tx_skb = NULL; 707 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf)) 708 ieee80211_wake_queues(priv->hw); 709 else 710 queue_work(lbtf_wq, &priv->tx_work); 711} 712EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback); 713 714void lbtf_bcn_sent(struct lbtf_private *priv) 715{ 716 struct sk_buff *skb = NULL; 717 718 if (priv->vif->type != NL80211_IFTYPE_AP) 719 return; 720 721 if (skb_queue_empty(&priv->bc_ps_buf)) { 722 bool tx_buff_bc = false; 723 724 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) { 725 skb_queue_tail(&priv->bc_ps_buf, skb); 726 tx_buff_bc = true; 727 } 728 if (tx_buff_bc) { 729 ieee80211_stop_queues(priv->hw); 730 queue_work(lbtf_wq, &priv->tx_work); 731 } 732 } 733 734 skb = ieee80211_beacon_get(priv->hw, priv->vif); 735 736 if (skb) { 737 lbtf_beacon_set(priv, skb); 738 kfree_skb(skb); 739 } 740} 741EXPORT_SYMBOL_GPL(lbtf_bcn_sent); 742 743static int __init lbtf_init_module(void) 744{ 745 lbtf_deb_enter(LBTF_DEB_MAIN); 746 lbtf_wq = create_workqueue("libertastf"); 747 if (lbtf_wq == NULL) { 748 printk(KERN_ERR "libertastf: couldn't create workqueue\n"); 749 return -ENOMEM; 750 } 751 lbtf_deb_leave(LBTF_DEB_MAIN); 752 return 0; 753} 754 755static void __exit lbtf_exit_module(void) 756{ 757 lbtf_deb_enter(LBTF_DEB_MAIN); 758 destroy_workqueue(lbtf_wq); 759 lbtf_deb_leave(LBTF_DEB_MAIN); 760} 761 762module_init(lbtf_init_module); 763module_exit(lbtf_exit_module); 764 765MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library"); 766MODULE_AUTHOR("Cozybit Inc."); 767MODULE_LICENSE("GPL"); 768