1 /* 2 * This file is part of wl1251 3 * 4 * Copyright (C) 2008-2009 Nokia Corporation 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * version 2 as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 18 * 02110-1301 USA 19 * 20 */ 21 22 #include <linux/module.h> 23 #include <linux/interrupt.h> 24 #include <linux/firmware.h> 25 #include <linux/delay.h> 26 #include <linux/irq.h> 27 #include <linux/crc32.h> 28 #include <linux/etherdevice.h> 29 #include <linux/vmalloc.h> 30 #include <linux/slab.h> 31 32 #include "wl1251.h" 33 #include "wl12xx_80211.h" 34 #include "reg.h" 35 #include "io.h" 36 #include "cmd.h" 37 #include "event.h" 38 #include "tx.h" 39 #include "rx.h" 40 #include "ps.h" 41 #include "init.h" 42 #include "debugfs.h" 43 #include "boot.h" 44 45 void wl1251_enable_interrupts(struct wl1251 *wl) 46 { 47 wl->if_ops->enable_irq(wl); 48 } 49 50 void wl1251_disable_interrupts(struct wl1251 *wl) 51 { 52 wl->if_ops->disable_irq(wl); 53 } 54 55 static int wl1251_power_off(struct wl1251 *wl) 56 { 57 return wl->if_ops->power(wl, false); 58 } 59 60 static int wl1251_power_on(struct wl1251 *wl) 61 { 62 return wl->if_ops->power(wl, true); 63 } 64 65 static int wl1251_fetch_firmware(struct wl1251 *wl) 66 { 67 const struct firmware *fw; 68 struct device *dev = wiphy_dev(wl->hw->wiphy); 69 int ret; 70 71 ret = request_firmware(&fw, WL1251_FW_NAME, dev); 72 73 if (ret < 0) { 74 wl1251_error("could not get firmware: %d", ret); 75 return ret; 76 } 77 78 if (fw->size % 4) { 79 wl1251_error("firmware size is not multiple of 32 bits: %zu", 80 fw->size); 81 ret = -EILSEQ; 82 goto out; 83 } 84 85 wl->fw_len = fw->size; 86 wl->fw = vmalloc(wl->fw_len); 87 88 if (!wl->fw) { 89 wl1251_error("could not allocate memory for the firmware"); 90 ret = -ENOMEM; 91 goto out; 92 } 93 94 memcpy(wl->fw, fw->data, wl->fw_len); 95 96 ret = 0; 97 98 out: 99 release_firmware(fw); 100 101 return ret; 102 } 103 104 static int wl1251_fetch_nvs(struct wl1251 *wl) 105 { 106 const struct firmware *fw; 107 struct device *dev = wiphy_dev(wl->hw->wiphy); 108 int ret; 109 110 ret = request_firmware(&fw, WL1251_NVS_NAME, dev); 111 112 if (ret < 0) { 113 wl1251_error("could not get nvs file: %d", ret); 114 return ret; 115 } 116 117 if (fw->size % 4) { 118 wl1251_error("nvs size is not multiple of 32 bits: %zu", 119 fw->size); 120 ret = -EILSEQ; 121 goto out; 122 } 123 124 wl->nvs_len = fw->size; 125 wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL); 126 127 if (!wl->nvs) { 128 wl1251_error("could not allocate memory for the nvs file"); 129 ret = -ENOMEM; 130 goto out; 131 } 132 133 ret = 0; 134 135 out: 136 release_firmware(fw); 137 138 return ret; 139 } 140 141 static void wl1251_fw_wakeup(struct wl1251 *wl) 142 { 143 u32 elp_reg; 144 145 elp_reg = ELPCTRL_WAKE_UP; 146 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg); 147 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR); 148 149 if (!(elp_reg & ELPCTRL_WLAN_READY)) 150 wl1251_warning("WLAN not ready"); 151 } 152 153 static int wl1251_chip_wakeup(struct wl1251 *wl) 154 { 155 int ret; 156 157 ret = wl1251_power_on(wl); 158 if (ret < 0) 159 return ret; 160 161 msleep(WL1251_POWER_ON_SLEEP); 162 wl->if_ops->reset(wl); 163 164 /* We don't need a real memory partition here, because we only want 165 * to use the registers at this point. */ 166 wl1251_set_partition(wl, 167 0x00000000, 168 0x00000000, 169 REGISTERS_BASE, 170 REGISTERS_DOWN_SIZE); 171 172 /* ELP module wake up */ 173 wl1251_fw_wakeup(wl); 174 175 /* whal_FwCtrl_BootSm() */ 176 177 /* 0. read chip id from CHIP_ID */ 178 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B); 179 180 /* 1. check if chip id is valid */ 181 182 switch (wl->chip_id) { 183 case CHIP_ID_1251_PG12: 184 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)", 185 wl->chip_id); 186 break; 187 case CHIP_ID_1251_PG11: 188 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)", 189 wl->chip_id); 190 break; 191 case CHIP_ID_1251_PG10: 192 default: 193 wl1251_error("unsupported chip id: 0x%x", wl->chip_id); 194 ret = -ENODEV; 195 goto out; 196 } 197 198 if (wl->fw == NULL) { 199 ret = wl1251_fetch_firmware(wl); 200 if (ret < 0) 201 goto out; 202 } 203 204 if (wl->nvs == NULL && !wl->use_eeprom) { 205 /* No NVS from netlink, try to get it from the filesystem */ 206 ret = wl1251_fetch_nvs(wl); 207 if (ret < 0) 208 goto out; 209 } 210 211 out: 212 return ret; 213 } 214 215 #define WL1251_IRQ_LOOP_COUNT 10 216 static void wl1251_irq_work(struct work_struct *work) 217 { 218 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT; 219 struct wl1251 *wl = 220 container_of(work, struct wl1251, irq_work); 221 int ret; 222 223 mutex_lock(&wl->mutex); 224 225 wl1251_debug(DEBUG_IRQ, "IRQ work"); 226 227 if (wl->state == WL1251_STATE_OFF) 228 goto out; 229 230 ret = wl1251_ps_elp_wakeup(wl); 231 if (ret < 0) 232 goto out; 233 234 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL); 235 236 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); 237 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr); 238 239 do { 240 if (wl->data_path) { 241 wl->rx_counter = wl1251_mem_read32( 242 wl, wl->data_path->rx_control_addr); 243 244 /* We handle a frmware bug here */ 245 switch ((wl->rx_counter - wl->rx_handled) & 0xf) { 246 case 0: 247 wl1251_debug(DEBUG_IRQ, 248 "RX: FW and host in sync"); 249 intr &= ~WL1251_ACX_INTR_RX0_DATA; 250 intr &= ~WL1251_ACX_INTR_RX1_DATA; 251 break; 252 case 1: 253 wl1251_debug(DEBUG_IRQ, "RX: FW +1"); 254 intr |= WL1251_ACX_INTR_RX0_DATA; 255 intr &= ~WL1251_ACX_INTR_RX1_DATA; 256 break; 257 case 2: 258 wl1251_debug(DEBUG_IRQ, "RX: FW +2"); 259 intr |= WL1251_ACX_INTR_RX0_DATA; 260 intr |= WL1251_ACX_INTR_RX1_DATA; 261 break; 262 default: 263 wl1251_warning( 264 "RX: FW and host out of sync: %d", 265 wl->rx_counter - wl->rx_handled); 266 break; 267 } 268 269 wl->rx_handled = wl->rx_counter; 270 271 wl1251_debug(DEBUG_IRQ, "RX counter: %d", 272 wl->rx_counter); 273 } 274 275 intr &= wl->intr_mask; 276 277 if (intr == 0) { 278 wl1251_debug(DEBUG_IRQ, "INTR is 0"); 279 goto out_sleep; 280 } 281 282 if (intr & WL1251_ACX_INTR_RX0_DATA) { 283 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA"); 284 wl1251_rx(wl); 285 } 286 287 if (intr & WL1251_ACX_INTR_RX1_DATA) { 288 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA"); 289 wl1251_rx(wl); 290 } 291 292 if (intr & WL1251_ACX_INTR_TX_RESULT) { 293 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT"); 294 wl1251_tx_complete(wl); 295 } 296 297 if (intr & WL1251_ACX_INTR_EVENT_A) { 298 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A"); 299 wl1251_event_handle(wl, 0); 300 } 301 302 if (intr & WL1251_ACX_INTR_EVENT_B) { 303 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B"); 304 wl1251_event_handle(wl, 1); 305 } 306 307 if (intr & WL1251_ACX_INTR_INIT_COMPLETE) 308 wl1251_debug(DEBUG_IRQ, 309 "WL1251_ACX_INTR_INIT_COMPLETE"); 310 311 if (--ctr == 0) 312 break; 313 314 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); 315 } while (intr); 316 317 out_sleep: 318 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask)); 319 wl1251_ps_elp_sleep(wl); 320 321 out: 322 mutex_unlock(&wl->mutex); 323 } 324 325 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel, 326 u16 beacon_interval, u8 dtim_period) 327 { 328 int ret; 329 330 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE, 331 DEFAULT_HW_GEN_MODULATION_TYPE, 332 wl->tx_mgmt_frm_rate, 333 wl->tx_mgmt_frm_mod); 334 if (ret < 0) 335 goto out; 336 337 338 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval, 339 dtim_period); 340 if (ret < 0) 341 goto out; 342 343 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100); 344 if (ret < 0) 345 wl1251_warning("join timeout"); 346 347 out: 348 return ret; 349 } 350 351 static void wl1251_filter_work(struct work_struct *work) 352 { 353 struct wl1251 *wl = 354 container_of(work, struct wl1251, filter_work); 355 int ret; 356 357 mutex_lock(&wl->mutex); 358 359 if (wl->state == WL1251_STATE_OFF) 360 goto out; 361 362 ret = wl1251_ps_elp_wakeup(wl); 363 if (ret < 0) 364 goto out; 365 366 ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int, 367 wl->dtim_period); 368 if (ret < 0) 369 goto out_sleep; 370 371 out_sleep: 372 wl1251_ps_elp_sleep(wl); 373 374 out: 375 mutex_unlock(&wl->mutex); 376 } 377 378 static void wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb) 379 { 380 struct wl1251 *wl = hw->priv; 381 unsigned long flags; 382 383 skb_queue_tail(&wl->tx_queue, skb); 384 385 /* 386 * The chip specific setup must run before the first TX packet - 387 * before that, the tx_work will not be initialized! 388 */ 389 390 ieee80211_queue_work(wl->hw, &wl->tx_work); 391 392 /* 393 * The workqueue is slow to process the tx_queue and we need stop 394 * the queue here, otherwise the queue will get too long. 395 */ 396 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) { 397 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues"); 398 399 spin_lock_irqsave(&wl->wl_lock, flags); 400 ieee80211_stop_queues(wl->hw); 401 wl->tx_queue_stopped = true; 402 spin_unlock_irqrestore(&wl->wl_lock, flags); 403 } 404 } 405 406 static int wl1251_op_start(struct ieee80211_hw *hw) 407 { 408 struct wl1251 *wl = hw->priv; 409 struct wiphy *wiphy = hw->wiphy; 410 int ret = 0; 411 412 wl1251_debug(DEBUG_MAC80211, "mac80211 start"); 413 414 mutex_lock(&wl->mutex); 415 416 if (wl->state != WL1251_STATE_OFF) { 417 wl1251_error("cannot start because not in off state: %d", 418 wl->state); 419 ret = -EBUSY; 420 goto out; 421 } 422 423 ret = wl1251_chip_wakeup(wl); 424 if (ret < 0) 425 goto out; 426 427 ret = wl1251_boot(wl); 428 if (ret < 0) 429 goto out; 430 431 ret = wl1251_hw_init(wl); 432 if (ret < 0) 433 goto out; 434 435 ret = wl1251_acx_station_id(wl); 436 if (ret < 0) 437 goto out; 438 439 wl->state = WL1251_STATE_ON; 440 441 wl1251_info("firmware booted (%s)", wl->fw_ver); 442 443 /* update hw/fw version info in wiphy struct */ 444 wiphy->hw_version = wl->chip_id; 445 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version)); 446 447 out: 448 if (ret < 0) 449 wl1251_power_off(wl); 450 451 mutex_unlock(&wl->mutex); 452 453 return ret; 454 } 455 456 static void wl1251_op_stop(struct ieee80211_hw *hw) 457 { 458 struct wl1251 *wl = hw->priv; 459 460 wl1251_info("down"); 461 462 wl1251_debug(DEBUG_MAC80211, "mac80211 stop"); 463 464 mutex_lock(&wl->mutex); 465 466 WARN_ON(wl->state != WL1251_STATE_ON); 467 468 if (wl->scanning) { 469 ieee80211_scan_completed(wl->hw, true); 470 wl->scanning = false; 471 } 472 473 wl->state = WL1251_STATE_OFF; 474 475 wl1251_disable_interrupts(wl); 476 477 mutex_unlock(&wl->mutex); 478 479 cancel_work_sync(&wl->irq_work); 480 cancel_work_sync(&wl->tx_work); 481 cancel_work_sync(&wl->filter_work); 482 cancel_delayed_work_sync(&wl->elp_work); 483 484 mutex_lock(&wl->mutex); 485 486 /* let's notify MAC80211 about the remaining pending TX frames */ 487 wl1251_tx_flush(wl); 488 wl1251_power_off(wl); 489 490 memset(wl->bssid, 0, ETH_ALEN); 491 wl->listen_int = 1; 492 wl->bss_type = MAX_BSS_TYPE; 493 494 wl->data_in_count = 0; 495 wl->rx_counter = 0; 496 wl->rx_handled = 0; 497 wl->rx_current_buffer = 0; 498 wl->rx_last_id = 0; 499 wl->next_tx_complete = 0; 500 wl->elp = false; 501 wl->station_mode = STATION_ACTIVE_MODE; 502 wl->tx_queue_stopped = false; 503 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 504 wl->rssi_thold = 0; 505 wl->channel = WL1251_DEFAULT_CHANNEL; 506 507 wl1251_debugfs_reset(wl); 508 509 mutex_unlock(&wl->mutex); 510 } 511 512 static int wl1251_op_add_interface(struct ieee80211_hw *hw, 513 struct ieee80211_vif *vif) 514 { 515 struct wl1251 *wl = hw->priv; 516 int ret = 0; 517 518 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 519 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 520 521 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM", 522 vif->type, vif->addr); 523 524 mutex_lock(&wl->mutex); 525 if (wl->vif) { 526 ret = -EBUSY; 527 goto out; 528 } 529 530 wl->vif = vif; 531 532 switch (vif->type) { 533 case NL80211_IFTYPE_STATION: 534 wl->bss_type = BSS_TYPE_STA_BSS; 535 break; 536 case NL80211_IFTYPE_ADHOC: 537 wl->bss_type = BSS_TYPE_IBSS; 538 break; 539 default: 540 ret = -EOPNOTSUPP; 541 goto out; 542 } 543 544 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) { 545 memcpy(wl->mac_addr, vif->addr, ETH_ALEN); 546 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 547 ret = wl1251_acx_station_id(wl); 548 if (ret < 0) 549 goto out; 550 } 551 552 out: 553 mutex_unlock(&wl->mutex); 554 return ret; 555 } 556 557 static void wl1251_op_remove_interface(struct ieee80211_hw *hw, 558 struct ieee80211_vif *vif) 559 { 560 struct wl1251 *wl = hw->priv; 561 562 mutex_lock(&wl->mutex); 563 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface"); 564 wl->vif = NULL; 565 mutex_unlock(&wl->mutex); 566 } 567 568 static int wl1251_build_qos_null_data(struct wl1251 *wl) 569 { 570 struct ieee80211_qos_hdr template; 571 572 memset(&template, 0, sizeof(template)); 573 574 memcpy(template.addr1, wl->bssid, ETH_ALEN); 575 memcpy(template.addr2, wl->mac_addr, ETH_ALEN); 576 memcpy(template.addr3, wl->bssid, ETH_ALEN); 577 578 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | 579 IEEE80211_STYPE_QOS_NULLFUNC | 580 IEEE80211_FCTL_TODS); 581 582 /* FIXME: not sure what priority to use here */ 583 template.qos_ctrl = cpu_to_le16(0); 584 585 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template, 586 sizeof(template)); 587 } 588 589 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed) 590 { 591 struct wl1251 *wl = hw->priv; 592 struct ieee80211_conf *conf = &hw->conf; 593 int channel, ret = 0; 594 595 channel = ieee80211_frequency_to_channel(conf->channel->center_freq); 596 597 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d", 598 channel, 599 conf->flags & IEEE80211_CONF_PS ? "on" : "off", 600 conf->power_level); 601 602 mutex_lock(&wl->mutex); 603 604 ret = wl1251_ps_elp_wakeup(wl); 605 if (ret < 0) 606 goto out; 607 608 if (channel != wl->channel) { 609 wl->channel = channel; 610 611 ret = wl1251_join(wl, wl->bss_type, wl->channel, 612 wl->beacon_int, wl->dtim_period); 613 if (ret < 0) 614 goto out_sleep; 615 } 616 617 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) { 618 wl1251_debug(DEBUG_PSM, "psm enabled"); 619 620 wl->psm_requested = true; 621 622 wl->dtim_period = conf->ps_dtim_period; 623 624 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int, 625 wl->dtim_period); 626 627 /* 628 * mac80211 enables PSM only if we're already associated. 629 */ 630 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE); 631 if (ret < 0) 632 goto out_sleep; 633 } else if (!(conf->flags & IEEE80211_CONF_PS) && 634 wl->psm_requested) { 635 wl1251_debug(DEBUG_PSM, "psm disabled"); 636 637 wl->psm_requested = false; 638 639 if (wl->station_mode != STATION_ACTIVE_MODE) { 640 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 641 if (ret < 0) 642 goto out_sleep; 643 } 644 } 645 646 if (changed & IEEE80211_CONF_CHANGE_IDLE) { 647 if (conf->flags & IEEE80211_CONF_IDLE) { 648 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 649 if (ret < 0) 650 goto out_sleep; 651 } else { 652 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 653 if (ret < 0) 654 goto out_sleep; 655 ret = wl1251_join(wl, wl->bss_type, wl->channel, 656 wl->beacon_int, wl->dtim_period); 657 if (ret < 0) 658 goto out_sleep; 659 } 660 } 661 662 if (conf->power_level != wl->power_level) { 663 ret = wl1251_acx_tx_power(wl, conf->power_level); 664 if (ret < 0) 665 goto out_sleep; 666 667 wl->power_level = conf->power_level; 668 } 669 670 out_sleep: 671 wl1251_ps_elp_sleep(wl); 672 673 out: 674 mutex_unlock(&wl->mutex); 675 676 return ret; 677 } 678 679 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \ 680 FIF_ALLMULTI | \ 681 FIF_FCSFAIL | \ 682 FIF_BCN_PRBRESP_PROMISC | \ 683 FIF_CONTROL | \ 684 FIF_OTHER_BSS) 685 686 static void wl1251_op_configure_filter(struct ieee80211_hw *hw, 687 unsigned int changed, 688 unsigned int *total,u64 multicast) 689 { 690 struct wl1251 *wl = hw->priv; 691 692 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter"); 693 694 *total &= WL1251_SUPPORTED_FILTERS; 695 changed &= WL1251_SUPPORTED_FILTERS; 696 697 if (changed == 0) 698 /* no filters which we support changed */ 699 return; 700 701 /* FIXME: wl->rx_config and wl->rx_filter are not protected */ 702 703 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 704 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 705 706 if (*total & FIF_PROMISC_IN_BSS) { 707 wl->rx_config |= CFG_BSSID_FILTER_EN; 708 wl->rx_config |= CFG_RX_ALL_GOOD; 709 } 710 if (*total & FIF_ALLMULTI) 711 /* 712 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive 713 * all multicast frames 714 */ 715 wl->rx_config &= ~CFG_MC_FILTER_EN; 716 if (*total & FIF_FCSFAIL) 717 wl->rx_filter |= CFG_RX_FCS_ERROR; 718 if (*total & FIF_BCN_PRBRESP_PROMISC) { 719 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 720 wl->rx_config &= ~CFG_SSID_FILTER_EN; 721 } 722 if (*total & FIF_CONTROL) 723 wl->rx_filter |= CFG_RX_CTL_EN; 724 if (*total & FIF_OTHER_BSS) 725 wl->rx_filter &= ~CFG_BSSID_FILTER_EN; 726 727 /* 728 * FIXME: workqueues need to be properly cancelled on stop(), for 729 * now let's just disable changing the filter settings. They will 730 * be updated any on config(). 731 */ 732 /* schedule_work(&wl->filter_work); */ 733 } 734 735 /* HW encryption */ 736 static int wl1251_set_key_type(struct wl1251 *wl, 737 struct wl1251_cmd_set_keys *key, 738 enum set_key_cmd cmd, 739 struct ieee80211_key_conf *mac80211_key, 740 const u8 *addr) 741 { 742 switch (mac80211_key->cipher) { 743 case WLAN_CIPHER_SUITE_WEP40: 744 case WLAN_CIPHER_SUITE_WEP104: 745 if (is_broadcast_ether_addr(addr)) 746 key->key_type = KEY_WEP_DEFAULT; 747 else 748 key->key_type = KEY_WEP_ADDR; 749 750 mac80211_key->hw_key_idx = mac80211_key->keyidx; 751 break; 752 case WLAN_CIPHER_SUITE_TKIP: 753 if (is_broadcast_ether_addr(addr)) 754 key->key_type = KEY_TKIP_MIC_GROUP; 755 else 756 key->key_type = KEY_TKIP_MIC_PAIRWISE; 757 758 mac80211_key->hw_key_idx = mac80211_key->keyidx; 759 break; 760 case WLAN_CIPHER_SUITE_CCMP: 761 if (is_broadcast_ether_addr(addr)) 762 key->key_type = KEY_AES_GROUP; 763 else 764 key->key_type = KEY_AES_PAIRWISE; 765 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 766 break; 767 default: 768 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher); 769 return -EOPNOTSUPP; 770 } 771 772 return 0; 773 } 774 775 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 776 struct ieee80211_vif *vif, 777 struct ieee80211_sta *sta, 778 struct ieee80211_key_conf *key) 779 { 780 struct wl1251 *wl = hw->priv; 781 struct wl1251_cmd_set_keys *wl_cmd; 782 const u8 *addr; 783 int ret; 784 785 static const u8 bcast_addr[ETH_ALEN] = 786 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 787 788 wl1251_debug(DEBUG_MAC80211, "mac80211 set key"); 789 790 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL); 791 if (!wl_cmd) { 792 ret = -ENOMEM; 793 goto out; 794 } 795 796 addr = sta ? sta->addr : bcast_addr; 797 798 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd); 799 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN); 800 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x", 801 key->cipher, key->keyidx, key->keylen, key->flags); 802 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen); 803 804 if (is_zero_ether_addr(addr)) { 805 /* We dont support TX only encryption */ 806 ret = -EOPNOTSUPP; 807 goto out; 808 } 809 810 mutex_lock(&wl->mutex); 811 812 ret = wl1251_ps_elp_wakeup(wl); 813 if (ret < 0) 814 goto out_unlock; 815 816 switch (cmd) { 817 case SET_KEY: 818 wl_cmd->key_action = KEY_ADD_OR_REPLACE; 819 break; 820 case DISABLE_KEY: 821 wl_cmd->key_action = KEY_REMOVE; 822 break; 823 default: 824 wl1251_error("Unsupported key cmd 0x%x", cmd); 825 break; 826 } 827 828 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr); 829 if (ret < 0) { 830 wl1251_error("Set KEY type failed"); 831 goto out_sleep; 832 } 833 834 if (wl_cmd->key_type != KEY_WEP_DEFAULT) 835 memcpy(wl_cmd->addr, addr, ETH_ALEN); 836 837 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) || 838 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) { 839 /* 840 * We get the key in the following form: 841 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes) 842 * but the target is expecting: 843 * TKIP - RX MIC - TX MIC 844 */ 845 memcpy(wl_cmd->key, key->key, 16); 846 memcpy(wl_cmd->key + 16, key->key + 24, 8); 847 memcpy(wl_cmd->key + 24, key->key + 16, 8); 848 849 } else { 850 memcpy(wl_cmd->key, key->key, key->keylen); 851 } 852 wl_cmd->key_size = key->keylen; 853 854 wl_cmd->id = key->keyidx; 855 wl_cmd->ssid_profile = 0; 856 857 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd)); 858 859 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd)); 860 if (ret < 0) { 861 wl1251_warning("could not set keys"); 862 goto out_sleep; 863 } 864 865 out_sleep: 866 wl1251_ps_elp_sleep(wl); 867 868 out_unlock: 869 mutex_unlock(&wl->mutex); 870 871 out: 872 kfree(wl_cmd); 873 874 return ret; 875 } 876 877 static int wl1251_op_hw_scan(struct ieee80211_hw *hw, 878 struct ieee80211_vif *vif, 879 struct cfg80211_scan_request *req) 880 { 881 struct wl1251 *wl = hw->priv; 882 struct sk_buff *skb; 883 size_t ssid_len = 0; 884 u8 *ssid = NULL; 885 int ret; 886 887 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan"); 888 889 if (req->n_ssids) { 890 ssid = req->ssids[0].ssid; 891 ssid_len = req->ssids[0].ssid_len; 892 } 893 894 mutex_lock(&wl->mutex); 895 896 if (wl->scanning) { 897 wl1251_debug(DEBUG_SCAN, "scan already in progress"); 898 ret = -EINVAL; 899 goto out; 900 } 901 902 ret = wl1251_ps_elp_wakeup(wl); 903 if (ret < 0) 904 goto out; 905 906 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len, 907 req->ie, req->ie_len); 908 if (!skb) { 909 ret = -ENOMEM; 910 goto out; 911 } 912 913 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data, 914 skb->len); 915 dev_kfree_skb(skb); 916 if (ret < 0) 917 goto out_sleep; 918 919 ret = wl1251_cmd_trigger_scan_to(wl, 0); 920 if (ret < 0) 921 goto out_sleep; 922 923 wl->scanning = true; 924 925 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels, 926 req->n_channels, WL1251_SCAN_NUM_PROBES); 927 if (ret < 0) { 928 wl->scanning = false; 929 goto out_sleep; 930 } 931 932 out_sleep: 933 wl1251_ps_elp_sleep(wl); 934 935 out: 936 mutex_unlock(&wl->mutex); 937 938 return ret; 939 } 940 941 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 942 { 943 struct wl1251 *wl = hw->priv; 944 int ret; 945 946 mutex_lock(&wl->mutex); 947 948 ret = wl1251_ps_elp_wakeup(wl); 949 if (ret < 0) 950 goto out; 951 952 ret = wl1251_acx_rts_threshold(wl, (u16) value); 953 if (ret < 0) 954 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret); 955 956 wl1251_ps_elp_sleep(wl); 957 958 out: 959 mutex_unlock(&wl->mutex); 960 961 return ret; 962 } 963 964 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw, 965 struct ieee80211_vif *vif, 966 struct ieee80211_bss_conf *bss_conf, 967 u32 changed) 968 { 969 struct wl1251 *wl = hw->priv; 970 struct sk_buff *beacon, *skb; 971 int ret; 972 973 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed"); 974 975 mutex_lock(&wl->mutex); 976 977 ret = wl1251_ps_elp_wakeup(wl); 978 if (ret < 0) 979 goto out; 980 981 if (changed & BSS_CHANGED_CQM) { 982 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold, 983 WL1251_DEFAULT_LOW_RSSI_WEIGHT, 984 WL1251_DEFAULT_LOW_RSSI_DEPTH, 985 WL1251_ACX_LOW_RSSI_TYPE_EDGE); 986 if (ret < 0) 987 goto out; 988 wl->rssi_thold = bss_conf->cqm_rssi_thold; 989 } 990 991 if (changed & BSS_CHANGED_BSSID) { 992 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN); 993 994 skb = ieee80211_nullfunc_get(wl->hw, wl->vif); 995 if (!skb) 996 goto out_sleep; 997 998 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA, 999 skb->data, skb->len); 1000 dev_kfree_skb(skb); 1001 if (ret < 0) 1002 goto out_sleep; 1003 1004 ret = wl1251_build_qos_null_data(wl); 1005 if (ret < 0) 1006 goto out; 1007 1008 if (wl->bss_type != BSS_TYPE_IBSS) { 1009 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1010 wl->beacon_int, wl->dtim_period); 1011 if (ret < 0) 1012 goto out_sleep; 1013 } 1014 } 1015 1016 if (changed & BSS_CHANGED_ASSOC) { 1017 if (bss_conf->assoc) { 1018 wl->beacon_int = bss_conf->beacon_int; 1019 1020 skb = ieee80211_pspoll_get(wl->hw, wl->vif); 1021 if (!skb) 1022 goto out_sleep; 1023 1024 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL, 1025 skb->data, 1026 skb->len); 1027 dev_kfree_skb(skb); 1028 if (ret < 0) 1029 goto out_sleep; 1030 1031 ret = wl1251_acx_aid(wl, bss_conf->aid); 1032 if (ret < 0) 1033 goto out_sleep; 1034 } else { 1035 /* use defaults when not associated */ 1036 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1037 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1038 } 1039 } 1040 if (changed & BSS_CHANGED_ERP_SLOT) { 1041 if (bss_conf->use_short_slot) 1042 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT); 1043 else 1044 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG); 1045 if (ret < 0) { 1046 wl1251_warning("Set slot time failed %d", ret); 1047 goto out_sleep; 1048 } 1049 } 1050 1051 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 1052 if (bss_conf->use_short_preamble) 1053 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT); 1054 else 1055 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG); 1056 } 1057 1058 if (changed & BSS_CHANGED_ERP_CTS_PROT) { 1059 if (bss_conf->use_cts_prot) 1060 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE); 1061 else 1062 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE); 1063 if (ret < 0) { 1064 wl1251_warning("Set ctsprotect failed %d", ret); 1065 goto out_sleep; 1066 } 1067 } 1068 1069 if (changed & BSS_CHANGED_BEACON) { 1070 beacon = ieee80211_beacon_get(hw, vif); 1071 if (!beacon) 1072 goto out_sleep; 1073 1074 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data, 1075 beacon->len); 1076 1077 if (ret < 0) { 1078 dev_kfree_skb(beacon); 1079 goto out_sleep; 1080 } 1081 1082 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data, 1083 beacon->len); 1084 1085 dev_kfree_skb(beacon); 1086 1087 if (ret < 0) 1088 goto out_sleep; 1089 1090 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int, 1091 wl->channel, wl->dtim_period); 1092 1093 if (ret < 0) 1094 goto out_sleep; 1095 } 1096 1097 out_sleep: 1098 wl1251_ps_elp_sleep(wl); 1099 1100 out: 1101 mutex_unlock(&wl->mutex); 1102 } 1103 1104 1105 /* can't be const, mac80211 writes to this */ 1106 static struct ieee80211_rate wl1251_rates[] = { 1107 { .bitrate = 10, 1108 .hw_value = 0x1, 1109 .hw_value_short = 0x1, }, 1110 { .bitrate = 20, 1111 .hw_value = 0x2, 1112 .hw_value_short = 0x2, 1113 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1114 { .bitrate = 55, 1115 .hw_value = 0x4, 1116 .hw_value_short = 0x4, 1117 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1118 { .bitrate = 110, 1119 .hw_value = 0x20, 1120 .hw_value_short = 0x20, 1121 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1122 { .bitrate = 60, 1123 .hw_value = 0x8, 1124 .hw_value_short = 0x8, }, 1125 { .bitrate = 90, 1126 .hw_value = 0x10, 1127 .hw_value_short = 0x10, }, 1128 { .bitrate = 120, 1129 .hw_value = 0x40, 1130 .hw_value_short = 0x40, }, 1131 { .bitrate = 180, 1132 .hw_value = 0x80, 1133 .hw_value_short = 0x80, }, 1134 { .bitrate = 240, 1135 .hw_value = 0x200, 1136 .hw_value_short = 0x200, }, 1137 { .bitrate = 360, 1138 .hw_value = 0x400, 1139 .hw_value_short = 0x400, }, 1140 { .bitrate = 480, 1141 .hw_value = 0x800, 1142 .hw_value_short = 0x800, }, 1143 { .bitrate = 540, 1144 .hw_value = 0x1000, 1145 .hw_value_short = 0x1000, }, 1146 }; 1147 1148 /* can't be const, mac80211 writes to this */ 1149 static struct ieee80211_channel wl1251_channels[] = { 1150 { .hw_value = 1, .center_freq = 2412}, 1151 { .hw_value = 2, .center_freq = 2417}, 1152 { .hw_value = 3, .center_freq = 2422}, 1153 { .hw_value = 4, .center_freq = 2427}, 1154 { .hw_value = 5, .center_freq = 2432}, 1155 { .hw_value = 6, .center_freq = 2437}, 1156 { .hw_value = 7, .center_freq = 2442}, 1157 { .hw_value = 8, .center_freq = 2447}, 1158 { .hw_value = 9, .center_freq = 2452}, 1159 { .hw_value = 10, .center_freq = 2457}, 1160 { .hw_value = 11, .center_freq = 2462}, 1161 { .hw_value = 12, .center_freq = 2467}, 1162 { .hw_value = 13, .center_freq = 2472}, 1163 }; 1164 1165 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, 1166 struct ieee80211_vif *vif, u16 queue, 1167 const struct ieee80211_tx_queue_params *params) 1168 { 1169 enum wl1251_acx_ps_scheme ps_scheme; 1170 struct wl1251 *wl = hw->priv; 1171 int ret; 1172 1173 mutex_lock(&wl->mutex); 1174 1175 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue); 1176 1177 ret = wl1251_ps_elp_wakeup(wl); 1178 if (ret < 0) 1179 goto out; 1180 1181 /* mac80211 uses units of 32 usec */ 1182 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue), 1183 params->cw_min, params->cw_max, 1184 params->aifs, params->txop * 32); 1185 if (ret < 0) 1186 goto out_sleep; 1187 1188 if (params->uapsd) 1189 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER; 1190 else 1191 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY; 1192 1193 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue), 1194 CHANNEL_TYPE_EDCF, 1195 wl1251_tx_get_queue(queue), ps_scheme, 1196 WL1251_ACX_ACK_POLICY_LEGACY); 1197 if (ret < 0) 1198 goto out_sleep; 1199 1200 out_sleep: 1201 wl1251_ps_elp_sleep(wl); 1202 1203 out: 1204 mutex_unlock(&wl->mutex); 1205 1206 return ret; 1207 } 1208 1209 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx, 1210 struct survey_info *survey) 1211 { 1212 struct wl1251 *wl = hw->priv; 1213 struct ieee80211_conf *conf = &hw->conf; 1214 1215 if (idx != 0) 1216 return -ENOENT; 1217 1218 survey->channel = conf->channel; 1219 survey->filled = SURVEY_INFO_NOISE_DBM; 1220 survey->noise = wl->noise; 1221 1222 return 0; 1223 } 1224 1225 /* can't be const, mac80211 writes to this */ 1226 static struct ieee80211_supported_band wl1251_band_2ghz = { 1227 .channels = wl1251_channels, 1228 .n_channels = ARRAY_SIZE(wl1251_channels), 1229 .bitrates = wl1251_rates, 1230 .n_bitrates = ARRAY_SIZE(wl1251_rates), 1231 }; 1232 1233 static const struct ieee80211_ops wl1251_ops = { 1234 .start = wl1251_op_start, 1235 .stop = wl1251_op_stop, 1236 .add_interface = wl1251_op_add_interface, 1237 .remove_interface = wl1251_op_remove_interface, 1238 .config = wl1251_op_config, 1239 .configure_filter = wl1251_op_configure_filter, 1240 .tx = wl1251_op_tx, 1241 .set_key = wl1251_op_set_key, 1242 .hw_scan = wl1251_op_hw_scan, 1243 .bss_info_changed = wl1251_op_bss_info_changed, 1244 .set_rts_threshold = wl1251_op_set_rts_threshold, 1245 .conf_tx = wl1251_op_conf_tx, 1246 .get_survey = wl1251_op_get_survey, 1247 }; 1248 1249 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data) 1250 { 1251 unsigned long timeout; 1252 1253 wl1251_reg_write32(wl, EE_ADDR, offset); 1254 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ); 1255 1256 /* EE_CTL_READ clears when data is ready */ 1257 timeout = jiffies + msecs_to_jiffies(100); 1258 while (1) { 1259 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ)) 1260 break; 1261 1262 if (time_after(jiffies, timeout)) 1263 return -ETIMEDOUT; 1264 1265 msleep(1); 1266 } 1267 1268 *data = wl1251_reg_read32(wl, EE_DATA); 1269 return 0; 1270 } 1271 1272 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset, 1273 u8 *data, size_t len) 1274 { 1275 size_t i; 1276 int ret; 1277 1278 wl1251_reg_write32(wl, EE_START, 0); 1279 1280 for (i = 0; i < len; i++) { 1281 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]); 1282 if (ret < 0) 1283 return ret; 1284 } 1285 1286 return 0; 1287 } 1288 1289 static int wl1251_read_eeprom_mac(struct wl1251 *wl) 1290 { 1291 u8 mac[ETH_ALEN]; 1292 int i, ret; 1293 1294 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE); 1295 1296 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac)); 1297 if (ret < 0) { 1298 wl1251_warning("failed to read MAC address from EEPROM"); 1299 return ret; 1300 } 1301 1302 /* MAC is stored in reverse order */ 1303 for (i = 0; i < ETH_ALEN; i++) 1304 wl->mac_addr[i] = mac[ETH_ALEN - i - 1]; 1305 1306 return 0; 1307 } 1308 1309 static int wl1251_register_hw(struct wl1251 *wl) 1310 { 1311 int ret; 1312 1313 if (wl->mac80211_registered) 1314 return 0; 1315 1316 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 1317 1318 ret = ieee80211_register_hw(wl->hw); 1319 if (ret < 0) { 1320 wl1251_error("unable to register mac80211 hw: %d", ret); 1321 return ret; 1322 } 1323 1324 wl->mac80211_registered = true; 1325 1326 wl1251_notice("loaded"); 1327 1328 return 0; 1329 } 1330 1331 int wl1251_init_ieee80211(struct wl1251 *wl) 1332 { 1333 int ret; 1334 1335 /* The tx descriptor buffer and the TKIP space */ 1336 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc) 1337 + WL1251_TKIP_IV_SPACE; 1338 1339 /* unit us */ 1340 /* FIXME: find a proper value */ 1341 wl->hw->channel_change_time = 10000; 1342 1343 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM | 1344 IEEE80211_HW_SUPPORTS_PS | 1345 IEEE80211_HW_SUPPORTS_UAPSD; 1346 1347 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1348 BIT(NL80211_IFTYPE_ADHOC); 1349 wl->hw->wiphy->max_scan_ssids = 1; 1350 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz; 1351 1352 wl->hw->queues = 4; 1353 1354 if (wl->use_eeprom) 1355 wl1251_read_eeprom_mac(wl); 1356 1357 ret = wl1251_register_hw(wl); 1358 if (ret) 1359 goto out; 1360 1361 wl1251_debugfs_init(wl); 1362 wl1251_notice("initialized"); 1363 1364 ret = 0; 1365 1366 out: 1367 return ret; 1368 } 1369 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211); 1370 1371 struct ieee80211_hw *wl1251_alloc_hw(void) 1372 { 1373 struct ieee80211_hw *hw; 1374 struct wl1251 *wl; 1375 int i; 1376 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf}; 1377 1378 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops); 1379 if (!hw) { 1380 wl1251_error("could not alloc ieee80211_hw"); 1381 return ERR_PTR(-ENOMEM); 1382 } 1383 1384 wl = hw->priv; 1385 memset(wl, 0, sizeof(*wl)); 1386 1387 wl->hw = hw; 1388 1389 wl->data_in_count = 0; 1390 1391 skb_queue_head_init(&wl->tx_queue); 1392 1393 INIT_WORK(&wl->filter_work, wl1251_filter_work); 1394 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work); 1395 wl->channel = WL1251_DEFAULT_CHANNEL; 1396 wl->scanning = false; 1397 wl->default_key = 0; 1398 wl->listen_int = 1; 1399 wl->rx_counter = 0; 1400 wl->rx_handled = 0; 1401 wl->rx_current_buffer = 0; 1402 wl->rx_last_id = 0; 1403 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 1404 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 1405 wl->elp = false; 1406 wl->station_mode = STATION_ACTIVE_MODE; 1407 wl->psm_requested = false; 1408 wl->tx_queue_stopped = false; 1409 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 1410 wl->rssi_thold = 0; 1411 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1412 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1413 wl->vif = NULL; 1414 1415 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) 1416 wl->tx_frames[i] = NULL; 1417 1418 wl->next_tx_complete = 0; 1419 1420 INIT_WORK(&wl->irq_work, wl1251_irq_work); 1421 INIT_WORK(&wl->tx_work, wl1251_tx_work); 1422 1423 /* 1424 * In case our MAC address is not correctly set, 1425 * we use a random but Nokia MAC. 1426 */ 1427 memcpy(wl->mac_addr, nokia_oui, 3); 1428 get_random_bytes(wl->mac_addr + 3, 3); 1429 1430 wl->state = WL1251_STATE_OFF; 1431 mutex_init(&wl->mutex); 1432 1433 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE; 1434 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE; 1435 1436 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL); 1437 if (!wl->rx_descriptor) { 1438 wl1251_error("could not allocate memory for rx descriptor"); 1439 ieee80211_free_hw(hw); 1440 return ERR_PTR(-ENOMEM); 1441 } 1442 1443 return hw; 1444 } 1445 EXPORT_SYMBOL_GPL(wl1251_alloc_hw); 1446 1447 int wl1251_free_hw(struct wl1251 *wl) 1448 { 1449 ieee80211_unregister_hw(wl->hw); 1450 1451 wl1251_debugfs_exit(wl); 1452 1453 kfree(wl->target_mem_map); 1454 kfree(wl->data_path); 1455 vfree(wl->fw); 1456 wl->fw = NULL; 1457 kfree(wl->nvs); 1458 wl->nvs = NULL; 1459 1460 kfree(wl->rx_descriptor); 1461 wl->rx_descriptor = NULL; 1462 1463 ieee80211_free_hw(wl->hw); 1464 1465 return 0; 1466 } 1467 EXPORT_SYMBOL_GPL(wl1251_free_hw); 1468 1469 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core"); 1470 MODULE_LICENSE("GPL"); 1471 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>"); 1472 MODULE_FIRMWARE(WL1251_FW_NAME); 1473