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 #define QOS_CONTROL_LEN 2 19 20 /* Module parameters */ 21 unsigned int lbtf_debug; 22 EXPORT_SYMBOL_GPL(lbtf_debug); 23 module_param_named(libertas_tf_debug, lbtf_debug, int, 0644); 24 25 struct workqueue_struct *lbtf_wq; 26 27 static const struct ieee80211_channel lbtf_channels[] = { 28 { .center_freq = 2412, .hw_value = 1 }, 29 { .center_freq = 2417, .hw_value = 2 }, 30 { .center_freq = 2422, .hw_value = 3 }, 31 { .center_freq = 2427, .hw_value = 4 }, 32 { .center_freq = 2432, .hw_value = 5 }, 33 { .center_freq = 2437, .hw_value = 6 }, 34 { .center_freq = 2442, .hw_value = 7 }, 35 { .center_freq = 2447, .hw_value = 8 }, 36 { .center_freq = 2452, .hw_value = 9 }, 37 { .center_freq = 2457, .hw_value = 10 }, 38 { .center_freq = 2462, .hw_value = 11 }, 39 { .center_freq = 2467, .hw_value = 12 }, 40 { .center_freq = 2472, .hw_value = 13 }, 41 { .center_freq = 2484, .hw_value = 14 }, 42 }; 43 44 /* This table contains the hardware specific values for the modulation rates. */ 45 static const struct ieee80211_rate lbtf_rates[] = { 46 { .bitrate = 10, 47 .hw_value = 0, }, 48 { .bitrate = 20, 49 .hw_value = 1, 50 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 51 { .bitrate = 55, 52 .hw_value = 2, 53 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 54 { .bitrate = 110, 55 .hw_value = 3, 56 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 57 { .bitrate = 60, 58 .hw_value = 5, 59 .flags = 0 }, 60 { .bitrate = 90, 61 .hw_value = 6, 62 .flags = 0 }, 63 { .bitrate = 120, 64 .hw_value = 7, 65 .flags = 0 }, 66 { .bitrate = 180, 67 .hw_value = 8, 68 .flags = 0 }, 69 { .bitrate = 240, 70 .hw_value = 9, 71 .flags = 0 }, 72 { .bitrate = 360, 73 .hw_value = 10, 74 .flags = 0 }, 75 { .bitrate = 480, 76 .hw_value = 11, 77 .flags = 0 }, 78 { .bitrate = 540, 79 .hw_value = 12, 80 .flags = 0 }, 81 }; 82 83 static void lbtf_cmd_work(struct work_struct *work) 84 { 85 struct lbtf_private *priv = container_of(work, struct lbtf_private, 86 cmd_work); 87 88 lbtf_deb_enter(LBTF_DEB_CMD); 89 90 spin_lock_irq(&priv->driver_lock); 91 /* command response? */ 92 if (priv->cmd_response_rxed) { 93 priv->cmd_response_rxed = 0; 94 spin_unlock_irq(&priv->driver_lock); 95 lbtf_process_rx_command(priv); 96 spin_lock_irq(&priv->driver_lock); 97 } 98 99 if (priv->cmd_timed_out && priv->cur_cmd) { 100 struct cmd_ctrl_node *cmdnode = priv->cur_cmd; 101 102 if (++priv->nr_retries > 10) { 103 lbtf_complete_command(priv, cmdnode, 104 -ETIMEDOUT); 105 priv->nr_retries = 0; 106 } else { 107 priv->cur_cmd = NULL; 108 109 /* Stick it back at the _top_ of the pending 110 * queue for immediate resubmission */ 111 list_add(&cmdnode->list, &priv->cmdpendingq); 112 } 113 } 114 priv->cmd_timed_out = 0; 115 spin_unlock_irq(&priv->driver_lock); 116 117 /* Execute the next command */ 118 if (!priv->cur_cmd) 119 lbtf_execute_next_command(priv); 120 121 lbtf_deb_leave(LBTF_DEB_CMD); 122 } 123 124 /** 125 * This function handles the timeout of command sending. 126 * It will re-send the same command again. 127 */ 128 static void command_timer_fn(struct timer_list *t) 129 { 130 struct lbtf_private *priv = from_timer(priv, t, command_timer); 131 unsigned long flags; 132 lbtf_deb_enter(LBTF_DEB_CMD); 133 134 spin_lock_irqsave(&priv->driver_lock, flags); 135 136 if (!priv->cur_cmd) { 137 printk(KERN_DEBUG "libertastf: command timer expired; " 138 "no pending command\n"); 139 goto out; 140 } 141 142 printk(KERN_DEBUG "libertas: command %x timed out\n", 143 le16_to_cpu(priv->cur_cmd->cmdbuf->command)); 144 145 priv->cmd_timed_out = 1; 146 queue_work(lbtf_wq, &priv->cmd_work); 147 out: 148 spin_unlock_irqrestore(&priv->driver_lock, flags); 149 lbtf_deb_leave(LBTF_DEB_CMD); 150 } 151 152 static int lbtf_init_adapter(struct lbtf_private *priv) 153 { 154 lbtf_deb_enter(LBTF_DEB_MAIN); 155 eth_broadcast_addr(priv->current_addr); 156 mutex_init(&priv->lock); 157 158 priv->vif = NULL; 159 timer_setup(&priv->command_timer, command_timer_fn, 0); 160 161 INIT_LIST_HEAD(&priv->cmdfreeq); 162 INIT_LIST_HEAD(&priv->cmdpendingq); 163 164 spin_lock_init(&priv->driver_lock); 165 166 /* Allocate the command buffers */ 167 if (lbtf_allocate_cmd_buffer(priv)) 168 return -1; 169 170 lbtf_deb_leave(LBTF_DEB_MAIN); 171 return 0; 172 } 173 174 static void lbtf_free_adapter(struct lbtf_private *priv) 175 { 176 lbtf_deb_enter(LBTF_DEB_MAIN); 177 lbtf_free_cmd_buffer(priv); 178 del_timer(&priv->command_timer); 179 lbtf_deb_leave(LBTF_DEB_MAIN); 180 } 181 182 static void lbtf_op_tx(struct ieee80211_hw *hw, 183 struct ieee80211_tx_control *control, 184 struct sk_buff *skb) 185 { 186 struct lbtf_private *priv = hw->priv; 187 188 priv->skb_to_tx = skb; 189 queue_work(lbtf_wq, &priv->tx_work); 190 /* 191 * queue will be restarted when we receive transmission feedback if 192 * there are no buffered multicast frames to send 193 */ 194 ieee80211_stop_queues(priv->hw); 195 } 196 197 static void lbtf_tx_work(struct work_struct *work) 198 { 199 struct lbtf_private *priv = container_of(work, struct lbtf_private, 200 tx_work); 201 unsigned int len; 202 struct ieee80211_tx_info *info; 203 struct txpd *txpd; 204 struct sk_buff *skb = NULL; 205 int err; 206 207 lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX); 208 209 if ((priv->vif->type == NL80211_IFTYPE_AP) && 210 (!skb_queue_empty(&priv->bc_ps_buf))) 211 skb = skb_dequeue(&priv->bc_ps_buf); 212 else if (priv->skb_to_tx) { 213 skb = priv->skb_to_tx; 214 priv->skb_to_tx = NULL; 215 } else { 216 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 217 return; 218 } 219 220 len = skb->len; 221 info = IEEE80211_SKB_CB(skb); 222 txpd = skb_push(skb, sizeof(struct txpd)); 223 224 if (priv->surpriseremoved) { 225 dev_kfree_skb_any(skb); 226 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 227 return; 228 } 229 230 memset(txpd, 0, sizeof(struct txpd)); 231 /* Activate per-packet rate selection */ 232 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE | 233 ieee80211_get_tx_rate(priv->hw, info)->hw_value); 234 235 /* copy destination address from 802.11 header */ 236 memcpy(txpd->tx_dest_addr_high, 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 u32 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); 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 .start = lbtf_op_start, 478 .stop = lbtf_op_stop, 479 .add_interface = lbtf_op_add_interface, 480 .remove_interface = lbtf_op_remove_interface, 481 .config = lbtf_op_config, 482 .prepare_multicast = lbtf_op_prepare_multicast, 483 .configure_filter = lbtf_op_configure_filter, 484 .bss_info_changed = lbtf_op_bss_info_changed, 485 .get_survey = lbtf_op_get_survey, 486 }; 487 488 int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb) 489 { 490 struct ieee80211_rx_status stats; 491 struct rxpd *prxpd; 492 int need_padding; 493 struct ieee80211_hdr *hdr; 494 495 lbtf_deb_enter(LBTF_DEB_RX); 496 497 if (priv->radioon != RADIO_ON) { 498 lbtf_deb_rx("rx before we turned on the radio"); 499 goto done; 500 } 501 502 prxpd = (struct rxpd *) skb->data; 503 504 memset(&stats, 0, sizeof(stats)); 505 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK))) 506 stats.flag |= RX_FLAG_FAILED_FCS_CRC; 507 stats.freq = priv->cur_freq; 508 stats.band = NL80211_BAND_2GHZ; 509 stats.signal = prxpd->snr - prxpd->nf; 510 priv->noise = prxpd->nf; 511 /* Marvell rate index has a hole at value 4 */ 512 if (prxpd->rx_rate > 4) 513 --prxpd->rx_rate; 514 stats.rate_idx = prxpd->rx_rate; 515 skb_pull(skb, sizeof(struct rxpd)); 516 517 hdr = (struct ieee80211_hdr *)skb->data; 518 519 need_padding = ieee80211_is_data_qos(hdr->frame_control); 520 need_padding ^= ieee80211_has_a4(hdr->frame_control); 521 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) && 522 (*ieee80211_get_qos_ctl(hdr) & 523 IEEE80211_QOS_CTL_A_MSDU_PRESENT); 524 525 if (need_padding) { 526 memmove(skb->data + 2, skb->data, skb->len); 527 skb_reserve(skb, 2); 528 } 529 530 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats)); 531 532 lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n", 533 skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd)); 534 lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data, 535 min_t(unsigned int, skb->len, 100)); 536 537 ieee80211_rx_irqsafe(priv->hw, skb); 538 539 done: 540 lbtf_deb_leave(LBTF_DEB_RX); 541 return 0; 542 } 543 EXPORT_SYMBOL_GPL(lbtf_rx); 544 545 /** 546 * lbtf_add_card: Add and initialize the card. 547 * 548 * @card A pointer to card 549 * 550 * Returns: pointer to struct lbtf_priv. 551 */ 552 struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev, 553 const struct lbtf_ops *ops) 554 { 555 struct ieee80211_hw *hw; 556 struct lbtf_private *priv = NULL; 557 558 lbtf_deb_enter(LBTF_DEB_MAIN); 559 560 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops); 561 if (!hw) 562 goto done; 563 564 priv = hw->priv; 565 if (lbtf_init_adapter(priv)) 566 goto err_init_adapter; 567 568 priv->hw = hw; 569 priv->card = card; 570 priv->ops = ops; 571 priv->tx_skb = NULL; 572 priv->radioon = RADIO_OFF; 573 574 hw->queues = 1; 575 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING); 576 ieee80211_hw_set(hw, SIGNAL_DBM); 577 hw->extra_tx_headroom = sizeof(struct txpd); 578 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels)); 579 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates)); 580 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates); 581 priv->band.bitrates = priv->rates; 582 priv->band.n_channels = ARRAY_SIZE(lbtf_channels); 583 priv->band.channels = priv->channels; 584 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band; 585 hw->wiphy->interface_modes = 586 BIT(NL80211_IFTYPE_STATION) | 587 BIT(NL80211_IFTYPE_ADHOC); 588 skb_queue_head_init(&priv->bc_ps_buf); 589 590 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 591 592 SET_IEEE80211_DEV(hw, dmdev); 593 594 INIT_WORK(&priv->cmd_work, lbtf_cmd_work); 595 INIT_WORK(&priv->tx_work, lbtf_tx_work); 596 597 if (priv->ops->hw_prog_firmware(priv)) { 598 lbtf_deb_usbd(dmdev, "Error programming the firmware\n"); 599 priv->ops->hw_reset_device(priv); 600 goto err_init_adapter; 601 } 602 603 eth_broadcast_addr(priv->current_addr); 604 if (lbtf_update_hw_spec(priv)) 605 goto err_init_adapter; 606 607 if (priv->fwrelease < LBTF_FW_VER_MIN || 608 priv->fwrelease > LBTF_FW_VER_MAX) { 609 goto err_init_adapter; 610 } 611 612 /* The firmware seems to start with the radio enabled. Turn it 613 * off before an actual mac80211 start callback is invoked. 614 */ 615 lbtf_set_radio_control(priv); 616 617 if (ieee80211_register_hw(hw)) 618 goto err_init_adapter; 619 620 dev_info(dmdev, "libertastf: Marvell WLAN 802.11 thinfirm adapter\n"); 621 goto done; 622 623 err_init_adapter: 624 lbtf_free_adapter(priv); 625 ieee80211_free_hw(hw); 626 priv = NULL; 627 628 done: 629 lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv); 630 return priv; 631 } 632 EXPORT_SYMBOL_GPL(lbtf_add_card); 633 634 635 int lbtf_remove_card(struct lbtf_private *priv) 636 { 637 struct ieee80211_hw *hw = priv->hw; 638 639 lbtf_deb_enter(LBTF_DEB_MAIN); 640 641 priv->surpriseremoved = 1; 642 del_timer(&priv->command_timer); 643 lbtf_free_adapter(priv); 644 priv->hw = NULL; 645 ieee80211_unregister_hw(hw); 646 ieee80211_free_hw(hw); 647 648 lbtf_deb_leave(LBTF_DEB_MAIN); 649 return 0; 650 } 651 EXPORT_SYMBOL_GPL(lbtf_remove_card); 652 653 void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail) 654 { 655 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb); 656 657 ieee80211_tx_info_clear_status(info); 658 /* 659 * Commented out, otherwise we never go beyond 1Mbit/s using mac80211 660 * default pid rc algorithm. 661 * 662 * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt; 663 */ 664 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail) 665 info->flags |= IEEE80211_TX_STAT_ACK; 666 skb_pull(priv->tx_skb, sizeof(struct txpd)); 667 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb); 668 priv->tx_skb = NULL; 669 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf)) 670 ieee80211_wake_queues(priv->hw); 671 else 672 queue_work(lbtf_wq, &priv->tx_work); 673 } 674 EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback); 675 676 void lbtf_bcn_sent(struct lbtf_private *priv) 677 { 678 struct sk_buff *skb = NULL; 679 680 if (priv->vif->type != NL80211_IFTYPE_AP) 681 return; 682 683 if (skb_queue_empty(&priv->bc_ps_buf)) { 684 bool tx_buff_bc = false; 685 686 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) { 687 skb_queue_tail(&priv->bc_ps_buf, skb); 688 tx_buff_bc = true; 689 } 690 if (tx_buff_bc) { 691 ieee80211_stop_queues(priv->hw); 692 queue_work(lbtf_wq, &priv->tx_work); 693 } 694 } 695 696 skb = ieee80211_beacon_get(priv->hw, priv->vif); 697 698 if (skb) { 699 lbtf_beacon_set(priv, skb); 700 kfree_skb(skb); 701 } 702 } 703 EXPORT_SYMBOL_GPL(lbtf_bcn_sent); 704 705 static int __init lbtf_init_module(void) 706 { 707 lbtf_deb_enter(LBTF_DEB_MAIN); 708 lbtf_wq = alloc_workqueue("libertastf", WQ_MEM_RECLAIM, 0); 709 if (lbtf_wq == NULL) { 710 printk(KERN_ERR "libertastf: couldn't create workqueue\n"); 711 return -ENOMEM; 712 } 713 lbtf_deb_leave(LBTF_DEB_MAIN); 714 return 0; 715 } 716 717 static void __exit lbtf_exit_module(void) 718 { 719 lbtf_deb_enter(LBTF_DEB_MAIN); 720 destroy_workqueue(lbtf_wq); 721 lbtf_deb_leave(LBTF_DEB_MAIN); 722 } 723 724 module_init(lbtf_init_module); 725 module_exit(lbtf_exit_module); 726 727 MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library"); 728 MODULE_AUTHOR("Cozybit Inc."); 729 MODULE_LICENSE("GPL"); 730