1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) 2008, cozybit Inc. 4 * Copyright (C) 2003-2006, Marvell International Ltd. 5 */ 6 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 7 8 #include <linux/hardirq.h> 9 #include <linux/slab.h> 10 11 #include <linux/etherdevice.h> 12 #include <linux/module.h> 13 #include "libertas_tf.h" 14 15 /* thinfirm version: 5.132.X.pX */ 16 #define LBTF_FW_VER_MIN 0x05840300 17 #define LBTF_FW_VER_MAX 0x0584ffff 18 19 /* Module parameters */ 20 unsigned int lbtf_debug; 21 EXPORT_SYMBOL_GPL(lbtf_debug); 22 module_param_named(libertas_tf_debug, lbtf_debug, int, 0644); 23 24 struct workqueue_struct *lbtf_wq; 25 26 static const struct ieee80211_channel lbtf_channels[] = { 27 { .center_freq = 2412, .hw_value = 1 }, 28 { .center_freq = 2417, .hw_value = 2 }, 29 { .center_freq = 2422, .hw_value = 3 }, 30 { .center_freq = 2427, .hw_value = 4 }, 31 { .center_freq = 2432, .hw_value = 5 }, 32 { .center_freq = 2437, .hw_value = 6 }, 33 { .center_freq = 2442, .hw_value = 7 }, 34 { .center_freq = 2447, .hw_value = 8 }, 35 { .center_freq = 2452, .hw_value = 9 }, 36 { .center_freq = 2457, .hw_value = 10 }, 37 { .center_freq = 2462, .hw_value = 11 }, 38 { .center_freq = 2467, .hw_value = 12 }, 39 { .center_freq = 2472, .hw_value = 13 }, 40 { .center_freq = 2484, .hw_value = 14 }, 41 }; 42 43 /* This table contains the hardware specific values for the modulation rates. */ 44 static const struct ieee80211_rate lbtf_rates[] = { 45 { .bitrate = 10, 46 .hw_value = 0, }, 47 { .bitrate = 20, 48 .hw_value = 1, 49 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 50 { .bitrate = 55, 51 .hw_value = 2, 52 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 53 { .bitrate = 110, 54 .hw_value = 3, 55 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 56 { .bitrate = 60, 57 .hw_value = 5, 58 .flags = 0 }, 59 { .bitrate = 90, 60 .hw_value = 6, 61 .flags = 0 }, 62 { .bitrate = 120, 63 .hw_value = 7, 64 .flags = 0 }, 65 { .bitrate = 180, 66 .hw_value = 8, 67 .flags = 0 }, 68 { .bitrate = 240, 69 .hw_value = 9, 70 .flags = 0 }, 71 { .bitrate = 360, 72 .hw_value = 10, 73 .flags = 0 }, 74 { .bitrate = 480, 75 .hw_value = 11, 76 .flags = 0 }, 77 { .bitrate = 540, 78 .hw_value = 12, 79 .flags = 0 }, 80 }; 81 82 static void lbtf_cmd_work(struct work_struct *work) 83 { 84 struct lbtf_private *priv = container_of(work, struct lbtf_private, 85 cmd_work); 86 87 lbtf_deb_enter(LBTF_DEB_CMD); 88 89 spin_lock_irq(&priv->driver_lock); 90 /* command response? */ 91 if (priv->cmd_response_rxed) { 92 priv->cmd_response_rxed = 0; 93 spin_unlock_irq(&priv->driver_lock); 94 lbtf_process_rx_command(priv); 95 spin_lock_irq(&priv->driver_lock); 96 } 97 98 if (priv->cmd_timed_out && priv->cur_cmd) { 99 struct cmd_ctrl_node *cmdnode = priv->cur_cmd; 100 101 if (++priv->nr_retries > 10) { 102 lbtf_complete_command(priv, cmdnode, 103 -ETIMEDOUT); 104 priv->nr_retries = 0; 105 } else { 106 priv->cur_cmd = NULL; 107 108 /* Stick it back at the _top_ of the pending 109 * queue for immediate resubmission */ 110 list_add(&cmdnode->list, &priv->cmdpendingq); 111 } 112 } 113 priv->cmd_timed_out = 0; 114 spin_unlock_irq(&priv->driver_lock); 115 116 /* Execute the next command */ 117 if (!priv->cur_cmd) 118 lbtf_execute_next_command(priv); 119 120 lbtf_deb_leave(LBTF_DEB_CMD); 121 } 122 123 /* 124 * This function handles the timeout of command sending. 125 * It will re-send the same command again. 126 */ 127 static void command_timer_fn(struct timer_list *t) 128 { 129 struct lbtf_private *priv = from_timer(priv, t, command_timer); 130 unsigned long flags; 131 lbtf_deb_enter(LBTF_DEB_CMD); 132 133 spin_lock_irqsave(&priv->driver_lock, flags); 134 135 if (!priv->cur_cmd) { 136 printk(KERN_DEBUG "libertastf: command timer expired; " 137 "no pending command\n"); 138 goto out; 139 } 140 141 printk(KERN_DEBUG "libertas: command %x timed out\n", 142 le16_to_cpu(priv->cur_cmd->cmdbuf->command)); 143 144 priv->cmd_timed_out = 1; 145 queue_work(lbtf_wq, &priv->cmd_work); 146 out: 147 spin_unlock_irqrestore(&priv->driver_lock, flags); 148 lbtf_deb_leave(LBTF_DEB_CMD); 149 } 150 151 static int lbtf_init_adapter(struct lbtf_private *priv) 152 { 153 lbtf_deb_enter(LBTF_DEB_MAIN); 154 eth_broadcast_addr(priv->current_addr); 155 mutex_init(&priv->lock); 156 157 priv->vif = NULL; 158 timer_setup(&priv->command_timer, command_timer_fn, 0); 159 160 INIT_LIST_HEAD(&priv->cmdfreeq); 161 INIT_LIST_HEAD(&priv->cmdpendingq); 162 163 spin_lock_init(&priv->driver_lock); 164 165 /* Allocate the command buffers */ 166 if (lbtf_allocate_cmd_buffer(priv)) 167 return -1; 168 169 lbtf_deb_leave(LBTF_DEB_MAIN); 170 return 0; 171 } 172 173 static void lbtf_free_adapter(struct lbtf_private *priv) 174 { 175 lbtf_deb_enter(LBTF_DEB_MAIN); 176 lbtf_free_cmd_buffer(priv); 177 del_timer(&priv->command_timer); 178 lbtf_deb_leave(LBTF_DEB_MAIN); 179 } 180 181 static void lbtf_op_tx(struct ieee80211_hw *hw, 182 struct ieee80211_tx_control *control, 183 struct sk_buff *skb) 184 { 185 struct lbtf_private *priv = hw->priv; 186 187 priv->skb_to_tx = skb; 188 queue_work(lbtf_wq, &priv->tx_work); 189 /* 190 * queue will be restarted when we receive transmission feedback if 191 * there are no buffered multicast frames to send 192 */ 193 ieee80211_stop_queues(priv->hw); 194 } 195 196 static void lbtf_tx_work(struct work_struct *work) 197 { 198 struct lbtf_private *priv = container_of(work, struct lbtf_private, 199 tx_work); 200 unsigned int len; 201 struct ieee80211_tx_info *info; 202 struct txpd *txpd; 203 struct sk_buff *skb = NULL; 204 int err; 205 206 lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX); 207 208 if ((priv->vif->type == NL80211_IFTYPE_AP) && 209 (!skb_queue_empty(&priv->bc_ps_buf))) 210 skb = skb_dequeue(&priv->bc_ps_buf); 211 else if (priv->skb_to_tx) { 212 skb = priv->skb_to_tx; 213 priv->skb_to_tx = NULL; 214 } else { 215 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 216 return; 217 } 218 219 len = skb->len; 220 info = IEEE80211_SKB_CB(skb); 221 txpd = skb_push(skb, sizeof(struct txpd)); 222 223 if (priv->surpriseremoved) { 224 dev_kfree_skb_any(skb); 225 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 226 return; 227 } 228 229 memset(txpd, 0, sizeof(struct txpd)); 230 /* Activate per-packet rate selection */ 231 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE | 232 ieee80211_get_tx_rate(priv->hw, info)->hw_value); 233 234 /* copy destination address from 802.11 header */ 235 BUILD_BUG_ON(sizeof(txpd->tx_dest_addr) != ETH_ALEN); 236 memcpy(&txpd->tx_dest_addr, skb->data + sizeof(struct txpd) + 4, 237 ETH_ALEN); 238 txpd->tx_packet_length = cpu_to_le16(len); 239 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd)); 240 lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100)); 241 BUG_ON(priv->tx_skb); 242 spin_lock_irq(&priv->driver_lock); 243 priv->tx_skb = skb; 244 err = priv->ops->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len); 245 spin_unlock_irq(&priv->driver_lock); 246 if (err) { 247 dev_kfree_skb_any(skb); 248 priv->tx_skb = NULL; 249 pr_err("TX error: %d", err); 250 } 251 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 252 } 253 254 static int lbtf_op_start(struct ieee80211_hw *hw) 255 { 256 struct lbtf_private *priv = hw->priv; 257 258 lbtf_deb_enter(LBTF_DEB_MACOPS); 259 260 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE; 261 priv->radioon = RADIO_ON; 262 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON; 263 lbtf_set_mac_control(priv); 264 lbtf_set_radio_control(priv); 265 266 lbtf_deb_leave(LBTF_DEB_MACOPS); 267 return 0; 268 } 269 270 static void lbtf_op_stop(struct ieee80211_hw *hw) 271 { 272 struct lbtf_private *priv = hw->priv; 273 unsigned long flags; 274 struct sk_buff *skb; 275 276 struct cmd_ctrl_node *cmdnode; 277 278 lbtf_deb_enter(LBTF_DEB_MACOPS); 279 280 /* Flush pending command nodes */ 281 spin_lock_irqsave(&priv->driver_lock, flags); 282 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) { 283 cmdnode->result = -ENOENT; 284 cmdnode->cmdwaitqwoken = 1; 285 wake_up_interruptible(&cmdnode->cmdwait_q); 286 } 287 288 spin_unlock_irqrestore(&priv->driver_lock, flags); 289 cancel_work_sync(&priv->cmd_work); 290 cancel_work_sync(&priv->tx_work); 291 while ((skb = skb_dequeue(&priv->bc_ps_buf))) 292 dev_kfree_skb_any(skb); 293 priv->radioon = RADIO_OFF; 294 lbtf_set_radio_control(priv); 295 296 lbtf_deb_leave(LBTF_DEB_MACOPS); 297 } 298 299 static int lbtf_op_add_interface(struct ieee80211_hw *hw, 300 struct ieee80211_vif *vif) 301 { 302 struct lbtf_private *priv = hw->priv; 303 lbtf_deb_enter(LBTF_DEB_MACOPS); 304 if (priv->vif != NULL) 305 return -EOPNOTSUPP; 306 307 priv->vif = vif; 308 switch (vif->type) { 309 case NL80211_IFTYPE_MESH_POINT: 310 case NL80211_IFTYPE_AP: 311 lbtf_set_mode(priv, LBTF_AP_MODE); 312 break; 313 case NL80211_IFTYPE_STATION: 314 lbtf_set_mode(priv, LBTF_STA_MODE); 315 break; 316 default: 317 priv->vif = NULL; 318 return -EOPNOTSUPP; 319 } 320 lbtf_set_mac_address(priv, (u8 *) vif->addr); 321 lbtf_deb_leave(LBTF_DEB_MACOPS); 322 return 0; 323 } 324 325 static void lbtf_op_remove_interface(struct ieee80211_hw *hw, 326 struct ieee80211_vif *vif) 327 { 328 struct lbtf_private *priv = hw->priv; 329 lbtf_deb_enter(LBTF_DEB_MACOPS); 330 331 if (priv->vif->type == NL80211_IFTYPE_AP || 332 priv->vif->type == NL80211_IFTYPE_MESH_POINT) 333 lbtf_beacon_ctrl(priv, 0, 0); 334 lbtf_set_mode(priv, LBTF_PASSIVE_MODE); 335 lbtf_set_bssid(priv, 0, NULL); 336 priv->vif = NULL; 337 lbtf_deb_leave(LBTF_DEB_MACOPS); 338 } 339 340 static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed) 341 { 342 struct lbtf_private *priv = hw->priv; 343 struct ieee80211_conf *conf = &hw->conf; 344 lbtf_deb_enter(LBTF_DEB_MACOPS); 345 346 if (conf->chandef.chan->center_freq != priv->cur_freq) { 347 priv->cur_freq = conf->chandef.chan->center_freq; 348 lbtf_set_channel(priv, conf->chandef.chan->hw_value); 349 } 350 lbtf_deb_leave(LBTF_DEB_MACOPS); 351 return 0; 352 } 353 354 static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw, 355 struct netdev_hw_addr_list *mc_list) 356 { 357 struct lbtf_private *priv = hw->priv; 358 int i; 359 struct netdev_hw_addr *ha; 360 int mc_count = netdev_hw_addr_list_count(mc_list); 361 362 if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE) 363 return mc_count; 364 365 priv->nr_of_multicastmacaddr = mc_count; 366 i = 0; 367 netdev_hw_addr_list_for_each(ha, mc_list) 368 memcpy(&priv->multicastlist[i++], ha->addr, ETH_ALEN); 369 370 return mc_count; 371 } 372 373 #define SUPPORTED_FIF_FLAGS FIF_ALLMULTI 374 static void lbtf_op_configure_filter(struct ieee80211_hw *hw, 375 unsigned int changed_flags, 376 unsigned int *new_flags, 377 u64 multicast) 378 { 379 struct lbtf_private *priv = hw->priv; 380 int old_mac_control = priv->mac_control; 381 382 lbtf_deb_enter(LBTF_DEB_MACOPS); 383 384 changed_flags &= SUPPORTED_FIF_FLAGS; 385 *new_flags &= SUPPORTED_FIF_FLAGS; 386 387 if (!changed_flags) { 388 lbtf_deb_leave(LBTF_DEB_MACOPS); 389 return; 390 } 391 392 priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE; 393 if (*new_flags & (FIF_ALLMULTI) || 394 multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) { 395 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE; 396 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE; 397 } else if (multicast) { 398 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE; 399 priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE; 400 lbtf_cmd_set_mac_multicast_addr(priv); 401 } else { 402 priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE | 403 CMD_ACT_MAC_ALL_MULTICAST_ENABLE); 404 if (priv->nr_of_multicastmacaddr) { 405 priv->nr_of_multicastmacaddr = 0; 406 lbtf_cmd_set_mac_multicast_addr(priv); 407 } 408 } 409 410 411 if (priv->mac_control != old_mac_control) 412 lbtf_set_mac_control(priv); 413 414 lbtf_deb_leave(LBTF_DEB_MACOPS); 415 } 416 417 static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw, 418 struct ieee80211_vif *vif, 419 struct ieee80211_bss_conf *bss_conf, 420 u64 changes) 421 { 422 struct lbtf_private *priv = hw->priv; 423 struct sk_buff *beacon; 424 lbtf_deb_enter(LBTF_DEB_MACOPS); 425 426 if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_INT)) { 427 switch (priv->vif->type) { 428 case NL80211_IFTYPE_AP: 429 case NL80211_IFTYPE_MESH_POINT: 430 beacon = ieee80211_beacon_get(hw, vif, 0); 431 if (beacon) { 432 lbtf_beacon_set(priv, beacon); 433 kfree_skb(beacon); 434 lbtf_beacon_ctrl(priv, 1, 435 bss_conf->beacon_int); 436 } 437 break; 438 default: 439 break; 440 } 441 } 442 443 if (changes & BSS_CHANGED_BSSID) { 444 bool activate = !is_zero_ether_addr(bss_conf->bssid); 445 lbtf_set_bssid(priv, activate, bss_conf->bssid); 446 } 447 448 if (changes & BSS_CHANGED_ERP_PREAMBLE) { 449 if (bss_conf->use_short_preamble) 450 priv->preamble = CMD_TYPE_SHORT_PREAMBLE; 451 else 452 priv->preamble = CMD_TYPE_LONG_PREAMBLE; 453 lbtf_set_radio_control(priv); 454 } 455 456 lbtf_deb_leave(LBTF_DEB_MACOPS); 457 } 458 459 static int lbtf_op_get_survey(struct ieee80211_hw *hw, int idx, 460 struct survey_info *survey) 461 { 462 struct lbtf_private *priv = hw->priv; 463 struct ieee80211_conf *conf = &hw->conf; 464 465 if (idx != 0) 466 return -ENOENT; 467 468 survey->channel = conf->chandef.chan; 469 survey->filled = SURVEY_INFO_NOISE_DBM; 470 survey->noise = priv->noise; 471 472 return 0; 473 } 474 475 static const struct ieee80211_ops lbtf_ops = { 476 .tx = lbtf_op_tx, 477 .wake_tx_queue = ieee80211_handle_wake_tx_queue, 478 .start = lbtf_op_start, 479 .stop = lbtf_op_stop, 480 .add_interface = lbtf_op_add_interface, 481 .remove_interface = lbtf_op_remove_interface, 482 .config = lbtf_op_config, 483 .prepare_multicast = lbtf_op_prepare_multicast, 484 .configure_filter = lbtf_op_configure_filter, 485 .bss_info_changed = lbtf_op_bss_info_changed, 486 .get_survey = lbtf_op_get_survey, 487 }; 488 489 int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb) 490 { 491 struct ieee80211_rx_status stats; 492 struct rxpd *prxpd; 493 int need_padding; 494 struct ieee80211_hdr *hdr; 495 496 lbtf_deb_enter(LBTF_DEB_RX); 497 498 if (priv->radioon != RADIO_ON) { 499 lbtf_deb_rx("rx before we turned on the radio"); 500 goto done; 501 } 502 503 prxpd = (struct rxpd *) skb->data; 504 505 memset(&stats, 0, sizeof(stats)); 506 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK))) 507 stats.flag |= RX_FLAG_FAILED_FCS_CRC; 508 stats.freq = priv->cur_freq; 509 stats.band = NL80211_BAND_2GHZ; 510 stats.signal = prxpd->snr - prxpd->nf; 511 priv->noise = prxpd->nf; 512 /* Marvell rate index has a hole at value 4 */ 513 if (prxpd->rx_rate > 4) 514 --prxpd->rx_rate; 515 stats.rate_idx = prxpd->rx_rate; 516 skb_pull(skb, sizeof(struct rxpd)); 517 518 hdr = (struct ieee80211_hdr *)skb->data; 519 520 need_padding = ieee80211_is_data_qos(hdr->frame_control); 521 need_padding ^= ieee80211_has_a4(hdr->frame_control); 522 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) && 523 (*ieee80211_get_qos_ctl(hdr) & 524 IEEE80211_QOS_CTL_A_MSDU_PRESENT); 525 526 if (need_padding) { 527 memmove(skb->data + 2, skb->data, skb->len); 528 skb_reserve(skb, 2); 529 } 530 531 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats)); 532 533 lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n", 534 skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd)); 535 lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data, 536 min_t(unsigned int, skb->len, 100)); 537 538 ieee80211_rx_irqsafe(priv->hw, skb); 539 540 done: 541 lbtf_deb_leave(LBTF_DEB_RX); 542 return 0; 543 } 544 EXPORT_SYMBOL_GPL(lbtf_rx); 545 546 /* 547 * lbtf_add_card: Add and initialize the card. 548 * 549 * Returns: pointer to struct lbtf_priv. 550 */ 551 struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev, 552 const struct lbtf_ops *ops) 553 { 554 struct ieee80211_hw *hw; 555 struct lbtf_private *priv = NULL; 556 557 lbtf_deb_enter(LBTF_DEB_MAIN); 558 559 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops); 560 if (!hw) 561 goto done; 562 563 priv = hw->priv; 564 if (lbtf_init_adapter(priv)) 565 goto err_init_adapter; 566 567 priv->hw = hw; 568 priv->card = card; 569 priv->ops = ops; 570 priv->tx_skb = NULL; 571 priv->radioon = RADIO_OFF; 572 573 hw->queues = 1; 574 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING); 575 ieee80211_hw_set(hw, SIGNAL_DBM); 576 hw->extra_tx_headroom = sizeof(struct txpd); 577 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels)); 578 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates)); 579 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates); 580 priv->band.bitrates = priv->rates; 581 priv->band.n_channels = ARRAY_SIZE(lbtf_channels); 582 priv->band.channels = priv->channels; 583 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band; 584 hw->wiphy->interface_modes = 585 BIT(NL80211_IFTYPE_STATION) | 586 BIT(NL80211_IFTYPE_ADHOC); 587 skb_queue_head_init(&priv->bc_ps_buf); 588 589 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 590 591 SET_IEEE80211_DEV(hw, dmdev); 592 593 INIT_WORK(&priv->cmd_work, lbtf_cmd_work); 594 INIT_WORK(&priv->tx_work, lbtf_tx_work); 595 596 if (priv->ops->hw_prog_firmware(priv)) { 597 lbtf_deb_usbd(dmdev, "Error programming the firmware\n"); 598 priv->ops->hw_reset_device(priv); 599 goto err_init_adapter; 600 } 601 602 eth_broadcast_addr(priv->current_addr); 603 if (lbtf_update_hw_spec(priv)) 604 goto err_init_adapter; 605 606 if (priv->fwrelease < LBTF_FW_VER_MIN || 607 priv->fwrelease > LBTF_FW_VER_MAX) { 608 goto err_init_adapter; 609 } 610 611 /* The firmware seems to start with the radio enabled. Turn it 612 * off before an actual mac80211 start callback is invoked. 613 */ 614 lbtf_set_radio_control(priv); 615 616 if (ieee80211_register_hw(hw)) 617 goto err_init_adapter; 618 619 dev_info(dmdev, "libertastf: Marvell WLAN 802.11 thinfirm adapter\n"); 620 goto done; 621 622 err_init_adapter: 623 lbtf_free_adapter(priv); 624 ieee80211_free_hw(hw); 625 priv = NULL; 626 627 done: 628 lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv); 629 return priv; 630 } 631 EXPORT_SYMBOL_GPL(lbtf_add_card); 632 633 634 int lbtf_remove_card(struct lbtf_private *priv) 635 { 636 struct ieee80211_hw *hw = priv->hw; 637 638 lbtf_deb_enter(LBTF_DEB_MAIN); 639 640 priv->surpriseremoved = 1; 641 del_timer(&priv->command_timer); 642 lbtf_free_adapter(priv); 643 priv->hw = NULL; 644 ieee80211_unregister_hw(hw); 645 ieee80211_free_hw(hw); 646 647 lbtf_deb_leave(LBTF_DEB_MAIN); 648 return 0; 649 } 650 EXPORT_SYMBOL_GPL(lbtf_remove_card); 651 652 void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail) 653 { 654 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb); 655 656 ieee80211_tx_info_clear_status(info); 657 /* 658 * Commented out, otherwise we never go beyond 1Mbit/s using mac80211 659 * default pid rc algorithm. 660 * 661 * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt; 662 */ 663 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail) 664 info->flags |= IEEE80211_TX_STAT_ACK; 665 skb_pull(priv->tx_skb, sizeof(struct txpd)); 666 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb); 667 priv->tx_skb = NULL; 668 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf)) 669 ieee80211_wake_queues(priv->hw); 670 else 671 queue_work(lbtf_wq, &priv->tx_work); 672 } 673 EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback); 674 675 void lbtf_bcn_sent(struct lbtf_private *priv) 676 { 677 struct sk_buff *skb = NULL; 678 679 if (priv->vif->type != NL80211_IFTYPE_AP) 680 return; 681 682 if (skb_queue_empty(&priv->bc_ps_buf)) { 683 bool tx_buff_bc = false; 684 685 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) { 686 skb_queue_tail(&priv->bc_ps_buf, skb); 687 tx_buff_bc = true; 688 } 689 if (tx_buff_bc) { 690 ieee80211_stop_queues(priv->hw); 691 queue_work(lbtf_wq, &priv->tx_work); 692 } 693 } 694 695 skb = ieee80211_beacon_get(priv->hw, priv->vif, 0); 696 697 if (skb) { 698 lbtf_beacon_set(priv, skb); 699 kfree_skb(skb); 700 } 701 } 702 EXPORT_SYMBOL_GPL(lbtf_bcn_sent); 703 704 static int __init lbtf_init_module(void) 705 { 706 lbtf_deb_enter(LBTF_DEB_MAIN); 707 lbtf_wq = alloc_workqueue("libertastf", WQ_MEM_RECLAIM, 0); 708 if (lbtf_wq == NULL) { 709 printk(KERN_ERR "libertastf: couldn't create workqueue\n"); 710 return -ENOMEM; 711 } 712 lbtf_deb_leave(LBTF_DEB_MAIN); 713 return 0; 714 } 715 716 static void __exit lbtf_exit_module(void) 717 { 718 lbtf_deb_enter(LBTF_DEB_MAIN); 719 destroy_workqueue(lbtf_wq); 720 lbtf_deb_leave(LBTF_DEB_MAIN); 721 } 722 723 module_init(lbtf_init_module); 724 module_exit(lbtf_exit_module); 725 726 MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library"); 727 MODULE_AUTHOR("Cozybit Inc."); 728 MODULE_LICENSE("GPL"); 729