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 * Join command applies filters, and if we are not associated, 339 * BSSID filter must be disabled for association to work. 340 */ 341 if (is_zero_ether_addr(wl->bssid)) 342 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 343 344 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval, 345 dtim_period); 346 if (ret < 0) 347 goto out; 348 349 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100); 350 if (ret < 0) 351 wl1251_warning("join timeout"); 352 353 out: 354 return ret; 355 } 356 357 static void wl1251_op_tx(struct ieee80211_hw *hw, 358 struct ieee80211_tx_control *control, 359 struct sk_buff *skb) 360 { 361 struct wl1251 *wl = hw->priv; 362 unsigned long flags; 363 364 skb_queue_tail(&wl->tx_queue, skb); 365 366 /* 367 * The chip specific setup must run before the first TX packet - 368 * before that, the tx_work will not be initialized! 369 */ 370 371 ieee80211_queue_work(wl->hw, &wl->tx_work); 372 373 /* 374 * The workqueue is slow to process the tx_queue and we need stop 375 * the queue here, otherwise the queue will get too long. 376 */ 377 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) { 378 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues"); 379 380 spin_lock_irqsave(&wl->wl_lock, flags); 381 ieee80211_stop_queues(wl->hw); 382 wl->tx_queue_stopped = true; 383 spin_unlock_irqrestore(&wl->wl_lock, flags); 384 } 385 } 386 387 static int wl1251_op_start(struct ieee80211_hw *hw) 388 { 389 struct wl1251 *wl = hw->priv; 390 struct wiphy *wiphy = hw->wiphy; 391 int ret = 0; 392 393 wl1251_debug(DEBUG_MAC80211, "mac80211 start"); 394 395 mutex_lock(&wl->mutex); 396 397 if (wl->state != WL1251_STATE_OFF) { 398 wl1251_error("cannot start because not in off state: %d", 399 wl->state); 400 ret = -EBUSY; 401 goto out; 402 } 403 404 ret = wl1251_chip_wakeup(wl); 405 if (ret < 0) 406 goto out; 407 408 ret = wl1251_boot(wl); 409 if (ret < 0) 410 goto out; 411 412 ret = wl1251_hw_init(wl); 413 if (ret < 0) 414 goto out; 415 416 ret = wl1251_acx_station_id(wl); 417 if (ret < 0) 418 goto out; 419 420 wl->state = WL1251_STATE_ON; 421 422 wl1251_info("firmware booted (%s)", wl->fw_ver); 423 424 /* update hw/fw version info in wiphy struct */ 425 wiphy->hw_version = wl->chip_id; 426 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version)); 427 428 out: 429 if (ret < 0) 430 wl1251_power_off(wl); 431 432 mutex_unlock(&wl->mutex); 433 434 return ret; 435 } 436 437 static void wl1251_op_stop(struct ieee80211_hw *hw) 438 { 439 struct wl1251 *wl = hw->priv; 440 441 wl1251_info("down"); 442 443 wl1251_debug(DEBUG_MAC80211, "mac80211 stop"); 444 445 mutex_lock(&wl->mutex); 446 447 WARN_ON(wl->state != WL1251_STATE_ON); 448 449 if (wl->scanning) { 450 ieee80211_scan_completed(wl->hw, true); 451 wl->scanning = false; 452 } 453 454 wl->state = WL1251_STATE_OFF; 455 456 wl1251_disable_interrupts(wl); 457 458 mutex_unlock(&wl->mutex); 459 460 cancel_work_sync(&wl->irq_work); 461 cancel_work_sync(&wl->tx_work); 462 cancel_delayed_work_sync(&wl->elp_work); 463 464 mutex_lock(&wl->mutex); 465 466 /* let's notify MAC80211 about the remaining pending TX frames */ 467 wl1251_tx_flush(wl); 468 wl1251_power_off(wl); 469 470 memset(wl->bssid, 0, ETH_ALEN); 471 wl->listen_int = 1; 472 wl->bss_type = MAX_BSS_TYPE; 473 474 wl->data_in_count = 0; 475 wl->rx_counter = 0; 476 wl->rx_handled = 0; 477 wl->rx_current_buffer = 0; 478 wl->rx_last_id = 0; 479 wl->next_tx_complete = 0; 480 wl->elp = false; 481 wl->station_mode = STATION_ACTIVE_MODE; 482 wl->tx_queue_stopped = false; 483 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 484 wl->rssi_thold = 0; 485 wl->channel = WL1251_DEFAULT_CHANNEL; 486 487 wl1251_debugfs_reset(wl); 488 489 mutex_unlock(&wl->mutex); 490 } 491 492 static int wl1251_op_add_interface(struct ieee80211_hw *hw, 493 struct ieee80211_vif *vif) 494 { 495 struct wl1251 *wl = hw->priv; 496 int ret = 0; 497 498 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 499 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 500 501 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM", 502 vif->type, vif->addr); 503 504 mutex_lock(&wl->mutex); 505 if (wl->vif) { 506 ret = -EBUSY; 507 goto out; 508 } 509 510 wl->vif = vif; 511 512 switch (vif->type) { 513 case NL80211_IFTYPE_STATION: 514 wl->bss_type = BSS_TYPE_STA_BSS; 515 break; 516 case NL80211_IFTYPE_ADHOC: 517 wl->bss_type = BSS_TYPE_IBSS; 518 break; 519 default: 520 ret = -EOPNOTSUPP; 521 goto out; 522 } 523 524 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) { 525 memcpy(wl->mac_addr, vif->addr, ETH_ALEN); 526 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 527 ret = wl1251_acx_station_id(wl); 528 if (ret < 0) 529 goto out; 530 } 531 532 out: 533 mutex_unlock(&wl->mutex); 534 return ret; 535 } 536 537 static void wl1251_op_remove_interface(struct ieee80211_hw *hw, 538 struct ieee80211_vif *vif) 539 { 540 struct wl1251 *wl = hw->priv; 541 542 mutex_lock(&wl->mutex); 543 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface"); 544 wl->vif = NULL; 545 mutex_unlock(&wl->mutex); 546 } 547 548 static int wl1251_build_qos_null_data(struct wl1251 *wl) 549 { 550 struct ieee80211_qos_hdr template; 551 552 memset(&template, 0, sizeof(template)); 553 554 memcpy(template.addr1, wl->bssid, ETH_ALEN); 555 memcpy(template.addr2, wl->mac_addr, ETH_ALEN); 556 memcpy(template.addr3, wl->bssid, ETH_ALEN); 557 558 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | 559 IEEE80211_STYPE_QOS_NULLFUNC | 560 IEEE80211_FCTL_TODS); 561 562 /* FIXME: not sure what priority to use here */ 563 template.qos_ctrl = cpu_to_le16(0); 564 565 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template, 566 sizeof(template)); 567 } 568 569 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed) 570 { 571 struct wl1251 *wl = hw->priv; 572 struct ieee80211_conf *conf = &hw->conf; 573 int channel, ret = 0; 574 575 channel = ieee80211_frequency_to_channel(conf->channel->center_freq); 576 577 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d", 578 channel, 579 conf->flags & IEEE80211_CONF_PS ? "on" : "off", 580 conf->power_level); 581 582 mutex_lock(&wl->mutex); 583 584 ret = wl1251_ps_elp_wakeup(wl); 585 if (ret < 0) 586 goto out; 587 588 if (channel != wl->channel) { 589 wl->channel = channel; 590 591 ret = wl1251_join(wl, wl->bss_type, wl->channel, 592 wl->beacon_int, wl->dtim_period); 593 if (ret < 0) 594 goto out_sleep; 595 } 596 597 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) { 598 wl1251_debug(DEBUG_PSM, "psm enabled"); 599 600 wl->psm_requested = true; 601 602 wl->dtim_period = conf->ps_dtim_period; 603 604 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int, 605 wl->dtim_period); 606 607 /* 608 * mac80211 enables PSM only if we're already associated. 609 */ 610 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE); 611 if (ret < 0) 612 goto out_sleep; 613 } else if (!(conf->flags & IEEE80211_CONF_PS) && 614 wl->psm_requested) { 615 wl1251_debug(DEBUG_PSM, "psm disabled"); 616 617 wl->psm_requested = false; 618 619 if (wl->station_mode != STATION_ACTIVE_MODE) { 620 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 621 if (ret < 0) 622 goto out_sleep; 623 } 624 } 625 626 if (changed & IEEE80211_CONF_CHANGE_IDLE) { 627 if (conf->flags & IEEE80211_CONF_IDLE) { 628 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 629 if (ret < 0) 630 goto out_sleep; 631 } else { 632 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 633 if (ret < 0) 634 goto out_sleep; 635 ret = wl1251_join(wl, wl->bss_type, wl->channel, 636 wl->beacon_int, wl->dtim_period); 637 if (ret < 0) 638 goto out_sleep; 639 } 640 } 641 642 if (conf->power_level != wl->power_level) { 643 ret = wl1251_acx_tx_power(wl, conf->power_level); 644 if (ret < 0) 645 goto out_sleep; 646 647 wl->power_level = conf->power_level; 648 } 649 650 out_sleep: 651 wl1251_ps_elp_sleep(wl); 652 653 out: 654 mutex_unlock(&wl->mutex); 655 656 return ret; 657 } 658 659 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \ 660 FIF_ALLMULTI | \ 661 FIF_FCSFAIL | \ 662 FIF_BCN_PRBRESP_PROMISC | \ 663 FIF_CONTROL | \ 664 FIF_OTHER_BSS | \ 665 FIF_PROBE_REQ) 666 667 static void wl1251_op_configure_filter(struct ieee80211_hw *hw, 668 unsigned int changed, 669 unsigned int *total,u64 multicast) 670 { 671 struct wl1251 *wl = hw->priv; 672 int ret; 673 674 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter"); 675 676 *total &= WL1251_SUPPORTED_FILTERS; 677 changed &= WL1251_SUPPORTED_FILTERS; 678 679 if (changed == 0) 680 /* no filters which we support changed */ 681 return; 682 683 mutex_lock(&wl->mutex); 684 685 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 686 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 687 688 if (*total & FIF_PROMISC_IN_BSS) { 689 wl->rx_config |= CFG_BSSID_FILTER_EN; 690 wl->rx_config |= CFG_RX_ALL_GOOD; 691 } 692 if (*total & FIF_ALLMULTI) 693 /* 694 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive 695 * all multicast frames 696 */ 697 wl->rx_config &= ~CFG_MC_FILTER_EN; 698 if (*total & FIF_FCSFAIL) 699 wl->rx_filter |= CFG_RX_FCS_ERROR; 700 if (*total & FIF_BCN_PRBRESP_PROMISC) { 701 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 702 wl->rx_config &= ~CFG_SSID_FILTER_EN; 703 } 704 if (*total & FIF_CONTROL) 705 wl->rx_filter |= CFG_RX_CTL_EN; 706 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid)) 707 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 708 if (*total & FIF_PROBE_REQ) 709 wl->rx_filter |= CFG_RX_PREQ_EN; 710 711 if (wl->state == WL1251_STATE_OFF) 712 goto out; 713 714 ret = wl1251_ps_elp_wakeup(wl); 715 if (ret < 0) 716 goto out; 717 718 /* send filters to firmware */ 719 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter); 720 721 wl1251_ps_elp_sleep(wl); 722 723 out: 724 mutex_unlock(&wl->mutex); 725 } 726 727 /* HW encryption */ 728 static int wl1251_set_key_type(struct wl1251 *wl, 729 struct wl1251_cmd_set_keys *key, 730 enum set_key_cmd cmd, 731 struct ieee80211_key_conf *mac80211_key, 732 const u8 *addr) 733 { 734 switch (mac80211_key->cipher) { 735 case WLAN_CIPHER_SUITE_WEP40: 736 case WLAN_CIPHER_SUITE_WEP104: 737 if (is_broadcast_ether_addr(addr)) 738 key->key_type = KEY_WEP_DEFAULT; 739 else 740 key->key_type = KEY_WEP_ADDR; 741 742 mac80211_key->hw_key_idx = mac80211_key->keyidx; 743 break; 744 case WLAN_CIPHER_SUITE_TKIP: 745 if (is_broadcast_ether_addr(addr)) 746 key->key_type = KEY_TKIP_MIC_GROUP; 747 else 748 key->key_type = KEY_TKIP_MIC_PAIRWISE; 749 750 mac80211_key->hw_key_idx = mac80211_key->keyidx; 751 break; 752 case WLAN_CIPHER_SUITE_CCMP: 753 if (is_broadcast_ether_addr(addr)) 754 key->key_type = KEY_AES_GROUP; 755 else 756 key->key_type = KEY_AES_PAIRWISE; 757 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 758 break; 759 default: 760 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher); 761 return -EOPNOTSUPP; 762 } 763 764 return 0; 765 } 766 767 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 768 struct ieee80211_vif *vif, 769 struct ieee80211_sta *sta, 770 struct ieee80211_key_conf *key) 771 { 772 struct wl1251 *wl = hw->priv; 773 struct wl1251_cmd_set_keys *wl_cmd; 774 const u8 *addr; 775 int ret; 776 777 static const u8 bcast_addr[ETH_ALEN] = 778 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 779 780 wl1251_debug(DEBUG_MAC80211, "mac80211 set key"); 781 782 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL); 783 if (!wl_cmd) { 784 ret = -ENOMEM; 785 goto out; 786 } 787 788 addr = sta ? sta->addr : bcast_addr; 789 790 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd); 791 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN); 792 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x", 793 key->cipher, key->keyidx, key->keylen, key->flags); 794 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen); 795 796 if (is_zero_ether_addr(addr)) { 797 /* We dont support TX only encryption */ 798 ret = -EOPNOTSUPP; 799 goto out; 800 } 801 802 mutex_lock(&wl->mutex); 803 804 ret = wl1251_ps_elp_wakeup(wl); 805 if (ret < 0) 806 goto out_unlock; 807 808 switch (cmd) { 809 case SET_KEY: 810 wl_cmd->key_action = KEY_ADD_OR_REPLACE; 811 break; 812 case DISABLE_KEY: 813 wl_cmd->key_action = KEY_REMOVE; 814 break; 815 default: 816 wl1251_error("Unsupported key cmd 0x%x", cmd); 817 break; 818 } 819 820 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr); 821 if (ret < 0) { 822 wl1251_error("Set KEY type failed"); 823 goto out_sleep; 824 } 825 826 if (wl_cmd->key_type != KEY_WEP_DEFAULT) 827 memcpy(wl_cmd->addr, addr, ETH_ALEN); 828 829 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) || 830 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) { 831 /* 832 * We get the key in the following form: 833 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes) 834 * but the target is expecting: 835 * TKIP - RX MIC - TX MIC 836 */ 837 memcpy(wl_cmd->key, key->key, 16); 838 memcpy(wl_cmd->key + 16, key->key + 24, 8); 839 memcpy(wl_cmd->key + 24, key->key + 16, 8); 840 841 } else { 842 memcpy(wl_cmd->key, key->key, key->keylen); 843 } 844 wl_cmd->key_size = key->keylen; 845 846 wl_cmd->id = key->keyidx; 847 wl_cmd->ssid_profile = 0; 848 849 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd)); 850 851 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd)); 852 if (ret < 0) { 853 wl1251_warning("could not set keys"); 854 goto out_sleep; 855 } 856 857 out_sleep: 858 wl1251_ps_elp_sleep(wl); 859 860 out_unlock: 861 mutex_unlock(&wl->mutex); 862 863 out: 864 kfree(wl_cmd); 865 866 return ret; 867 } 868 869 static int wl1251_op_hw_scan(struct ieee80211_hw *hw, 870 struct ieee80211_vif *vif, 871 struct cfg80211_scan_request *req) 872 { 873 struct wl1251 *wl = hw->priv; 874 struct sk_buff *skb; 875 size_t ssid_len = 0; 876 u8 *ssid = NULL; 877 int ret; 878 879 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan"); 880 881 if (req->n_ssids) { 882 ssid = req->ssids[0].ssid; 883 ssid_len = req->ssids[0].ssid_len; 884 } 885 886 mutex_lock(&wl->mutex); 887 888 if (wl->scanning) { 889 wl1251_debug(DEBUG_SCAN, "scan already in progress"); 890 ret = -EINVAL; 891 goto out; 892 } 893 894 ret = wl1251_ps_elp_wakeup(wl); 895 if (ret < 0) 896 goto out; 897 898 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len, 899 req->ie, req->ie_len); 900 if (!skb) { 901 ret = -ENOMEM; 902 goto out; 903 } 904 905 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data, 906 skb->len); 907 dev_kfree_skb(skb); 908 if (ret < 0) 909 goto out_sleep; 910 911 ret = wl1251_cmd_trigger_scan_to(wl, 0); 912 if (ret < 0) 913 goto out_sleep; 914 915 wl->scanning = true; 916 917 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels, 918 req->n_channels, WL1251_SCAN_NUM_PROBES); 919 if (ret < 0) { 920 wl->scanning = false; 921 goto out_sleep; 922 } 923 924 out_sleep: 925 wl1251_ps_elp_sleep(wl); 926 927 out: 928 mutex_unlock(&wl->mutex); 929 930 return ret; 931 } 932 933 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 934 { 935 struct wl1251 *wl = hw->priv; 936 int ret; 937 938 mutex_lock(&wl->mutex); 939 940 ret = wl1251_ps_elp_wakeup(wl); 941 if (ret < 0) 942 goto out; 943 944 ret = wl1251_acx_rts_threshold(wl, (u16) value); 945 if (ret < 0) 946 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret); 947 948 wl1251_ps_elp_sleep(wl); 949 950 out: 951 mutex_unlock(&wl->mutex); 952 953 return ret; 954 } 955 956 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw, 957 struct ieee80211_vif *vif, 958 struct ieee80211_bss_conf *bss_conf, 959 u32 changed) 960 { 961 struct wl1251 *wl = hw->priv; 962 struct sk_buff *beacon, *skb; 963 int ret; 964 965 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed"); 966 967 mutex_lock(&wl->mutex); 968 969 ret = wl1251_ps_elp_wakeup(wl); 970 if (ret < 0) 971 goto out; 972 973 if (changed & BSS_CHANGED_CQM) { 974 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold, 975 WL1251_DEFAULT_LOW_RSSI_WEIGHT, 976 WL1251_DEFAULT_LOW_RSSI_DEPTH, 977 WL1251_ACX_LOW_RSSI_TYPE_EDGE); 978 if (ret < 0) 979 goto out; 980 wl->rssi_thold = bss_conf->cqm_rssi_thold; 981 } 982 983 if (changed & BSS_CHANGED_BSSID) { 984 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN); 985 986 skb = ieee80211_nullfunc_get(wl->hw, wl->vif); 987 if (!skb) 988 goto out_sleep; 989 990 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA, 991 skb->data, skb->len); 992 dev_kfree_skb(skb); 993 if (ret < 0) 994 goto out_sleep; 995 996 ret = wl1251_build_qos_null_data(wl); 997 if (ret < 0) 998 goto out; 999 1000 if (wl->bss_type != BSS_TYPE_IBSS) { 1001 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1002 wl->beacon_int, wl->dtim_period); 1003 if (ret < 0) 1004 goto out_sleep; 1005 } 1006 } 1007 1008 if (changed & BSS_CHANGED_ASSOC) { 1009 if (bss_conf->assoc) { 1010 wl->beacon_int = bss_conf->beacon_int; 1011 1012 skb = ieee80211_pspoll_get(wl->hw, wl->vif); 1013 if (!skb) 1014 goto out_sleep; 1015 1016 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL, 1017 skb->data, 1018 skb->len); 1019 dev_kfree_skb(skb); 1020 if (ret < 0) 1021 goto out_sleep; 1022 1023 ret = wl1251_acx_aid(wl, bss_conf->aid); 1024 if (ret < 0) 1025 goto out_sleep; 1026 } else { 1027 /* use defaults when not associated */ 1028 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1029 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1030 } 1031 } 1032 if (changed & BSS_CHANGED_ERP_SLOT) { 1033 if (bss_conf->use_short_slot) 1034 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT); 1035 else 1036 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG); 1037 if (ret < 0) { 1038 wl1251_warning("Set slot time failed %d", ret); 1039 goto out_sleep; 1040 } 1041 } 1042 1043 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 1044 if (bss_conf->use_short_preamble) 1045 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT); 1046 else 1047 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG); 1048 } 1049 1050 if (changed & BSS_CHANGED_ERP_CTS_PROT) { 1051 if (bss_conf->use_cts_prot) 1052 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE); 1053 else 1054 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE); 1055 if (ret < 0) { 1056 wl1251_warning("Set ctsprotect failed %d", ret); 1057 goto out_sleep; 1058 } 1059 } 1060 1061 if (changed & BSS_CHANGED_BEACON) { 1062 beacon = ieee80211_beacon_get(hw, vif); 1063 if (!beacon) 1064 goto out_sleep; 1065 1066 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data, 1067 beacon->len); 1068 1069 if (ret < 0) { 1070 dev_kfree_skb(beacon); 1071 goto out_sleep; 1072 } 1073 1074 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data, 1075 beacon->len); 1076 1077 dev_kfree_skb(beacon); 1078 1079 if (ret < 0) 1080 goto out_sleep; 1081 1082 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int, 1083 wl->channel, wl->dtim_period); 1084 1085 if (ret < 0) 1086 goto out_sleep; 1087 } 1088 1089 out_sleep: 1090 wl1251_ps_elp_sleep(wl); 1091 1092 out: 1093 mutex_unlock(&wl->mutex); 1094 } 1095 1096 1097 /* can't be const, mac80211 writes to this */ 1098 static struct ieee80211_rate wl1251_rates[] = { 1099 { .bitrate = 10, 1100 .hw_value = 0x1, 1101 .hw_value_short = 0x1, }, 1102 { .bitrate = 20, 1103 .hw_value = 0x2, 1104 .hw_value_short = 0x2, 1105 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1106 { .bitrate = 55, 1107 .hw_value = 0x4, 1108 .hw_value_short = 0x4, 1109 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1110 { .bitrate = 110, 1111 .hw_value = 0x20, 1112 .hw_value_short = 0x20, 1113 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1114 { .bitrate = 60, 1115 .hw_value = 0x8, 1116 .hw_value_short = 0x8, }, 1117 { .bitrate = 90, 1118 .hw_value = 0x10, 1119 .hw_value_short = 0x10, }, 1120 { .bitrate = 120, 1121 .hw_value = 0x40, 1122 .hw_value_short = 0x40, }, 1123 { .bitrate = 180, 1124 .hw_value = 0x80, 1125 .hw_value_short = 0x80, }, 1126 { .bitrate = 240, 1127 .hw_value = 0x200, 1128 .hw_value_short = 0x200, }, 1129 { .bitrate = 360, 1130 .hw_value = 0x400, 1131 .hw_value_short = 0x400, }, 1132 { .bitrate = 480, 1133 .hw_value = 0x800, 1134 .hw_value_short = 0x800, }, 1135 { .bitrate = 540, 1136 .hw_value = 0x1000, 1137 .hw_value_short = 0x1000, }, 1138 }; 1139 1140 /* can't be const, mac80211 writes to this */ 1141 static struct ieee80211_channel wl1251_channels[] = { 1142 { .hw_value = 1, .center_freq = 2412}, 1143 { .hw_value = 2, .center_freq = 2417}, 1144 { .hw_value = 3, .center_freq = 2422}, 1145 { .hw_value = 4, .center_freq = 2427}, 1146 { .hw_value = 5, .center_freq = 2432}, 1147 { .hw_value = 6, .center_freq = 2437}, 1148 { .hw_value = 7, .center_freq = 2442}, 1149 { .hw_value = 8, .center_freq = 2447}, 1150 { .hw_value = 9, .center_freq = 2452}, 1151 { .hw_value = 10, .center_freq = 2457}, 1152 { .hw_value = 11, .center_freq = 2462}, 1153 { .hw_value = 12, .center_freq = 2467}, 1154 { .hw_value = 13, .center_freq = 2472}, 1155 }; 1156 1157 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, 1158 struct ieee80211_vif *vif, u16 queue, 1159 const struct ieee80211_tx_queue_params *params) 1160 { 1161 enum wl1251_acx_ps_scheme ps_scheme; 1162 struct wl1251 *wl = hw->priv; 1163 int ret; 1164 1165 mutex_lock(&wl->mutex); 1166 1167 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue); 1168 1169 ret = wl1251_ps_elp_wakeup(wl); 1170 if (ret < 0) 1171 goto out; 1172 1173 /* mac80211 uses units of 32 usec */ 1174 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue), 1175 params->cw_min, params->cw_max, 1176 params->aifs, params->txop * 32); 1177 if (ret < 0) 1178 goto out_sleep; 1179 1180 if (params->uapsd) 1181 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER; 1182 else 1183 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY; 1184 1185 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue), 1186 CHANNEL_TYPE_EDCF, 1187 wl1251_tx_get_queue(queue), ps_scheme, 1188 WL1251_ACX_ACK_POLICY_LEGACY); 1189 if (ret < 0) 1190 goto out_sleep; 1191 1192 out_sleep: 1193 wl1251_ps_elp_sleep(wl); 1194 1195 out: 1196 mutex_unlock(&wl->mutex); 1197 1198 return ret; 1199 } 1200 1201 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx, 1202 struct survey_info *survey) 1203 { 1204 struct wl1251 *wl = hw->priv; 1205 struct ieee80211_conf *conf = &hw->conf; 1206 1207 if (idx != 0) 1208 return -ENOENT; 1209 1210 survey->channel = conf->channel; 1211 survey->filled = SURVEY_INFO_NOISE_DBM; 1212 survey->noise = wl->noise; 1213 1214 return 0; 1215 } 1216 1217 /* can't be const, mac80211 writes to this */ 1218 static struct ieee80211_supported_band wl1251_band_2ghz = { 1219 .channels = wl1251_channels, 1220 .n_channels = ARRAY_SIZE(wl1251_channels), 1221 .bitrates = wl1251_rates, 1222 .n_bitrates = ARRAY_SIZE(wl1251_rates), 1223 }; 1224 1225 static const struct ieee80211_ops wl1251_ops = { 1226 .start = wl1251_op_start, 1227 .stop = wl1251_op_stop, 1228 .add_interface = wl1251_op_add_interface, 1229 .remove_interface = wl1251_op_remove_interface, 1230 .config = wl1251_op_config, 1231 .configure_filter = wl1251_op_configure_filter, 1232 .tx = wl1251_op_tx, 1233 .set_key = wl1251_op_set_key, 1234 .hw_scan = wl1251_op_hw_scan, 1235 .bss_info_changed = wl1251_op_bss_info_changed, 1236 .set_rts_threshold = wl1251_op_set_rts_threshold, 1237 .conf_tx = wl1251_op_conf_tx, 1238 .get_survey = wl1251_op_get_survey, 1239 }; 1240 1241 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data) 1242 { 1243 unsigned long timeout; 1244 1245 wl1251_reg_write32(wl, EE_ADDR, offset); 1246 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ); 1247 1248 /* EE_CTL_READ clears when data is ready */ 1249 timeout = jiffies + msecs_to_jiffies(100); 1250 while (1) { 1251 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ)) 1252 break; 1253 1254 if (time_after(jiffies, timeout)) 1255 return -ETIMEDOUT; 1256 1257 msleep(1); 1258 } 1259 1260 *data = wl1251_reg_read32(wl, EE_DATA); 1261 return 0; 1262 } 1263 1264 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset, 1265 u8 *data, size_t len) 1266 { 1267 size_t i; 1268 int ret; 1269 1270 wl1251_reg_write32(wl, EE_START, 0); 1271 1272 for (i = 0; i < len; i++) { 1273 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]); 1274 if (ret < 0) 1275 return ret; 1276 } 1277 1278 return 0; 1279 } 1280 1281 static int wl1251_read_eeprom_mac(struct wl1251 *wl) 1282 { 1283 u8 mac[ETH_ALEN]; 1284 int i, ret; 1285 1286 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE); 1287 1288 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac)); 1289 if (ret < 0) { 1290 wl1251_warning("failed to read MAC address from EEPROM"); 1291 return ret; 1292 } 1293 1294 /* MAC is stored in reverse order */ 1295 for (i = 0; i < ETH_ALEN; i++) 1296 wl->mac_addr[i] = mac[ETH_ALEN - i - 1]; 1297 1298 return 0; 1299 } 1300 1301 static int wl1251_register_hw(struct wl1251 *wl) 1302 { 1303 int ret; 1304 1305 if (wl->mac80211_registered) 1306 return 0; 1307 1308 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 1309 1310 ret = ieee80211_register_hw(wl->hw); 1311 if (ret < 0) { 1312 wl1251_error("unable to register mac80211 hw: %d", ret); 1313 return ret; 1314 } 1315 1316 wl->mac80211_registered = true; 1317 1318 wl1251_notice("loaded"); 1319 1320 return 0; 1321 } 1322 1323 int wl1251_init_ieee80211(struct wl1251 *wl) 1324 { 1325 int ret; 1326 1327 /* The tx descriptor buffer and the TKIP space */ 1328 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc) 1329 + WL1251_TKIP_IV_SPACE; 1330 1331 /* unit us */ 1332 /* FIXME: find a proper value */ 1333 wl->hw->channel_change_time = 10000; 1334 1335 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM | 1336 IEEE80211_HW_SUPPORTS_PS | 1337 IEEE80211_HW_SUPPORTS_UAPSD; 1338 1339 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1340 BIT(NL80211_IFTYPE_ADHOC); 1341 wl->hw->wiphy->max_scan_ssids = 1; 1342 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz; 1343 1344 wl->hw->queues = 4; 1345 1346 if (wl->use_eeprom) 1347 wl1251_read_eeprom_mac(wl); 1348 1349 ret = wl1251_register_hw(wl); 1350 if (ret) 1351 goto out; 1352 1353 wl1251_debugfs_init(wl); 1354 wl1251_notice("initialized"); 1355 1356 ret = 0; 1357 1358 out: 1359 return ret; 1360 } 1361 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211); 1362 1363 struct ieee80211_hw *wl1251_alloc_hw(void) 1364 { 1365 struct ieee80211_hw *hw; 1366 struct wl1251 *wl; 1367 int i; 1368 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf}; 1369 1370 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops); 1371 if (!hw) { 1372 wl1251_error("could not alloc ieee80211_hw"); 1373 return ERR_PTR(-ENOMEM); 1374 } 1375 1376 wl = hw->priv; 1377 memset(wl, 0, sizeof(*wl)); 1378 1379 wl->hw = hw; 1380 1381 wl->data_in_count = 0; 1382 1383 skb_queue_head_init(&wl->tx_queue); 1384 1385 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work); 1386 wl->channel = WL1251_DEFAULT_CHANNEL; 1387 wl->scanning = false; 1388 wl->default_key = 0; 1389 wl->listen_int = 1; 1390 wl->rx_counter = 0; 1391 wl->rx_handled = 0; 1392 wl->rx_current_buffer = 0; 1393 wl->rx_last_id = 0; 1394 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 1395 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 1396 wl->elp = false; 1397 wl->station_mode = STATION_ACTIVE_MODE; 1398 wl->psm_requested = false; 1399 wl->tx_queue_stopped = false; 1400 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 1401 wl->rssi_thold = 0; 1402 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1403 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1404 wl->vif = NULL; 1405 1406 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) 1407 wl->tx_frames[i] = NULL; 1408 1409 wl->next_tx_complete = 0; 1410 1411 INIT_WORK(&wl->irq_work, wl1251_irq_work); 1412 INIT_WORK(&wl->tx_work, wl1251_tx_work); 1413 1414 /* 1415 * In case our MAC address is not correctly set, 1416 * we use a random but Nokia MAC. 1417 */ 1418 memcpy(wl->mac_addr, nokia_oui, 3); 1419 get_random_bytes(wl->mac_addr + 3, 3); 1420 1421 wl->state = WL1251_STATE_OFF; 1422 mutex_init(&wl->mutex); 1423 1424 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE; 1425 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE; 1426 1427 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL); 1428 if (!wl->rx_descriptor) { 1429 wl1251_error("could not allocate memory for rx descriptor"); 1430 ieee80211_free_hw(hw); 1431 return ERR_PTR(-ENOMEM); 1432 } 1433 1434 return hw; 1435 } 1436 EXPORT_SYMBOL_GPL(wl1251_alloc_hw); 1437 1438 int wl1251_free_hw(struct wl1251 *wl) 1439 { 1440 ieee80211_unregister_hw(wl->hw); 1441 1442 wl1251_debugfs_exit(wl); 1443 1444 kfree(wl->target_mem_map); 1445 kfree(wl->data_path); 1446 vfree(wl->fw); 1447 wl->fw = NULL; 1448 kfree(wl->nvs); 1449 wl->nvs = NULL; 1450 1451 kfree(wl->rx_descriptor); 1452 wl->rx_descriptor = NULL; 1453 1454 ieee80211_free_hw(wl->hw); 1455 1456 return 0; 1457 } 1458 EXPORT_SYMBOL_GPL(wl1251_free_hw); 1459 1460 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core"); 1461 MODULE_LICENSE("GPL"); 1462 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>"); 1463 MODULE_FIRMWARE(WL1251_FW_NAME); 1464