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( 576 conf->chandef.chan->center_freq); 577 578 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d", 579 channel, 580 conf->flags & IEEE80211_CONF_PS ? "on" : "off", 581 conf->power_level); 582 583 mutex_lock(&wl->mutex); 584 585 ret = wl1251_ps_elp_wakeup(wl); 586 if (ret < 0) 587 goto out; 588 589 if (channel != wl->channel) { 590 wl->channel = channel; 591 592 ret = wl1251_join(wl, wl->bss_type, wl->channel, 593 wl->beacon_int, wl->dtim_period); 594 if (ret < 0) 595 goto out_sleep; 596 } 597 598 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) { 599 wl1251_debug(DEBUG_PSM, "psm enabled"); 600 601 wl->psm_requested = true; 602 603 wl->dtim_period = conf->ps_dtim_period; 604 605 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int, 606 wl->dtim_period); 607 608 /* 609 * mac80211 enables PSM only if we're already associated. 610 */ 611 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE); 612 if (ret < 0) 613 goto out_sleep; 614 } else if (!(conf->flags & IEEE80211_CONF_PS) && 615 wl->psm_requested) { 616 wl1251_debug(DEBUG_PSM, "psm disabled"); 617 618 wl->psm_requested = false; 619 620 if (wl->station_mode != STATION_ACTIVE_MODE) { 621 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 622 if (ret < 0) 623 goto out_sleep; 624 } 625 } 626 627 if (changed & IEEE80211_CONF_CHANGE_IDLE && !wl->scanning) { 628 if (conf->flags & IEEE80211_CONF_IDLE) { 629 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 630 if (ret < 0) 631 goto out_sleep; 632 } else { 633 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 634 if (ret < 0) 635 goto out_sleep; 636 ret = wl1251_join(wl, wl->bss_type, wl->channel, 637 wl->beacon_int, wl->dtim_period); 638 if (ret < 0) 639 goto out_sleep; 640 } 641 } 642 643 if (conf->power_level != wl->power_level) { 644 ret = wl1251_acx_tx_power(wl, conf->power_level); 645 if (ret < 0) 646 goto out_sleep; 647 648 wl->power_level = conf->power_level; 649 } 650 651 out_sleep: 652 wl1251_ps_elp_sleep(wl); 653 654 out: 655 mutex_unlock(&wl->mutex); 656 657 return ret; 658 } 659 660 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \ 661 FIF_ALLMULTI | \ 662 FIF_FCSFAIL | \ 663 FIF_BCN_PRBRESP_PROMISC | \ 664 FIF_CONTROL | \ 665 FIF_OTHER_BSS | \ 666 FIF_PROBE_REQ) 667 668 static void wl1251_op_configure_filter(struct ieee80211_hw *hw, 669 unsigned int changed, 670 unsigned int *total,u64 multicast) 671 { 672 struct wl1251 *wl = hw->priv; 673 int ret; 674 675 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter"); 676 677 *total &= WL1251_SUPPORTED_FILTERS; 678 changed &= WL1251_SUPPORTED_FILTERS; 679 680 if (changed == 0) 681 /* no filters which we support changed */ 682 return; 683 684 mutex_lock(&wl->mutex); 685 686 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 687 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 688 689 if (*total & FIF_PROMISC_IN_BSS) { 690 wl->rx_config |= CFG_BSSID_FILTER_EN; 691 wl->rx_config |= CFG_RX_ALL_GOOD; 692 } 693 if (*total & FIF_ALLMULTI) 694 /* 695 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive 696 * all multicast frames 697 */ 698 wl->rx_config &= ~CFG_MC_FILTER_EN; 699 if (*total & FIF_FCSFAIL) 700 wl->rx_filter |= CFG_RX_FCS_ERROR; 701 if (*total & FIF_BCN_PRBRESP_PROMISC) { 702 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 703 wl->rx_config &= ~CFG_SSID_FILTER_EN; 704 } 705 if (*total & FIF_CONTROL) 706 wl->rx_filter |= CFG_RX_CTL_EN; 707 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid)) 708 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 709 if (*total & FIF_PROBE_REQ) 710 wl->rx_filter |= CFG_RX_PREQ_EN; 711 712 if (wl->state == WL1251_STATE_OFF) 713 goto out; 714 715 ret = wl1251_ps_elp_wakeup(wl); 716 if (ret < 0) 717 goto out; 718 719 /* send filters to firmware */ 720 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter); 721 722 wl1251_ps_elp_sleep(wl); 723 724 out: 725 mutex_unlock(&wl->mutex); 726 } 727 728 /* HW encryption */ 729 static int wl1251_set_key_type(struct wl1251 *wl, 730 struct wl1251_cmd_set_keys *key, 731 enum set_key_cmd cmd, 732 struct ieee80211_key_conf *mac80211_key, 733 const u8 *addr) 734 { 735 switch (mac80211_key->cipher) { 736 case WLAN_CIPHER_SUITE_WEP40: 737 case WLAN_CIPHER_SUITE_WEP104: 738 if (is_broadcast_ether_addr(addr)) 739 key->key_type = KEY_WEP_DEFAULT; 740 else 741 key->key_type = KEY_WEP_ADDR; 742 743 mac80211_key->hw_key_idx = mac80211_key->keyidx; 744 break; 745 case WLAN_CIPHER_SUITE_TKIP: 746 if (is_broadcast_ether_addr(addr)) 747 key->key_type = KEY_TKIP_MIC_GROUP; 748 else 749 key->key_type = KEY_TKIP_MIC_PAIRWISE; 750 751 mac80211_key->hw_key_idx = mac80211_key->keyidx; 752 break; 753 case WLAN_CIPHER_SUITE_CCMP: 754 if (is_broadcast_ether_addr(addr)) 755 key->key_type = KEY_AES_GROUP; 756 else 757 key->key_type = KEY_AES_PAIRWISE; 758 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 759 break; 760 default: 761 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher); 762 return -EOPNOTSUPP; 763 } 764 765 return 0; 766 } 767 768 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 769 struct ieee80211_vif *vif, 770 struct ieee80211_sta *sta, 771 struct ieee80211_key_conf *key) 772 { 773 struct wl1251 *wl = hw->priv; 774 struct wl1251_cmd_set_keys *wl_cmd; 775 const u8 *addr; 776 int ret; 777 778 static const u8 bcast_addr[ETH_ALEN] = 779 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 780 781 wl1251_debug(DEBUG_MAC80211, "mac80211 set key"); 782 783 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL); 784 if (!wl_cmd) { 785 ret = -ENOMEM; 786 goto out; 787 } 788 789 addr = sta ? sta->addr : bcast_addr; 790 791 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd); 792 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN); 793 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x", 794 key->cipher, key->keyidx, key->keylen, key->flags); 795 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen); 796 797 if (is_zero_ether_addr(addr)) { 798 /* We dont support TX only encryption */ 799 ret = -EOPNOTSUPP; 800 goto out; 801 } 802 803 mutex_lock(&wl->mutex); 804 805 ret = wl1251_ps_elp_wakeup(wl); 806 if (ret < 0) 807 goto out_unlock; 808 809 switch (cmd) { 810 case SET_KEY: 811 wl_cmd->key_action = KEY_ADD_OR_REPLACE; 812 break; 813 case DISABLE_KEY: 814 wl_cmd->key_action = KEY_REMOVE; 815 break; 816 default: 817 wl1251_error("Unsupported key cmd 0x%x", cmd); 818 break; 819 } 820 821 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr); 822 if (ret < 0) { 823 wl1251_error("Set KEY type failed"); 824 goto out_sleep; 825 } 826 827 if (wl_cmd->key_type != KEY_WEP_DEFAULT) 828 memcpy(wl_cmd->addr, addr, ETH_ALEN); 829 830 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) || 831 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) { 832 /* 833 * We get the key in the following form: 834 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes) 835 * but the target is expecting: 836 * TKIP - RX MIC - TX MIC 837 */ 838 memcpy(wl_cmd->key, key->key, 16); 839 memcpy(wl_cmd->key + 16, key->key + 24, 8); 840 memcpy(wl_cmd->key + 24, key->key + 16, 8); 841 842 } else { 843 memcpy(wl_cmd->key, key->key, key->keylen); 844 } 845 wl_cmd->key_size = key->keylen; 846 847 wl_cmd->id = key->keyidx; 848 wl_cmd->ssid_profile = 0; 849 850 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd)); 851 852 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd)); 853 if (ret < 0) { 854 wl1251_warning("could not set keys"); 855 goto out_sleep; 856 } 857 858 out_sleep: 859 wl1251_ps_elp_sleep(wl); 860 861 out_unlock: 862 mutex_unlock(&wl->mutex); 863 864 out: 865 kfree(wl_cmd); 866 867 return ret; 868 } 869 870 static int wl1251_op_hw_scan(struct ieee80211_hw *hw, 871 struct ieee80211_vif *vif, 872 struct cfg80211_scan_request *req) 873 { 874 struct wl1251 *wl = hw->priv; 875 struct sk_buff *skb; 876 size_t ssid_len = 0; 877 u8 *ssid = NULL; 878 int ret; 879 880 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan"); 881 882 if (req->n_ssids) { 883 ssid = req->ssids[0].ssid; 884 ssid_len = req->ssids[0].ssid_len; 885 } 886 887 mutex_lock(&wl->mutex); 888 889 if (wl->scanning) { 890 wl1251_debug(DEBUG_SCAN, "scan already in progress"); 891 ret = -EINVAL; 892 goto out; 893 } 894 895 ret = wl1251_ps_elp_wakeup(wl); 896 if (ret < 0) 897 goto out; 898 899 if (hw->conf.flags & IEEE80211_CONF_IDLE) { 900 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 901 if (ret < 0) 902 goto out_sleep; 903 ret = wl1251_join(wl, wl->bss_type, wl->channel, 904 wl->beacon_int, wl->dtim_period); 905 if (ret < 0) 906 goto out_sleep; 907 } 908 909 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len, 910 req->ie_len); 911 if (!skb) { 912 ret = -ENOMEM; 913 goto out_idle; 914 } 915 if (req->ie_len) 916 memcpy(skb_put(skb, req->ie_len), req->ie, req->ie_len); 917 918 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data, 919 skb->len); 920 dev_kfree_skb(skb); 921 if (ret < 0) 922 goto out_idle; 923 924 ret = wl1251_cmd_trigger_scan_to(wl, 0); 925 if (ret < 0) 926 goto out_idle; 927 928 wl->scanning = true; 929 930 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels, 931 req->n_channels, WL1251_SCAN_NUM_PROBES); 932 if (ret < 0) { 933 wl->scanning = false; 934 goto out_idle; 935 } 936 goto out_sleep; 937 938 out_idle: 939 if (hw->conf.flags & IEEE80211_CONF_IDLE) 940 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 941 out_sleep: 942 wl1251_ps_elp_sleep(wl); 943 944 out: 945 mutex_unlock(&wl->mutex); 946 947 return ret; 948 } 949 950 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 951 { 952 struct wl1251 *wl = hw->priv; 953 int ret; 954 955 mutex_lock(&wl->mutex); 956 957 ret = wl1251_ps_elp_wakeup(wl); 958 if (ret < 0) 959 goto out; 960 961 ret = wl1251_acx_rts_threshold(wl, (u16) value); 962 if (ret < 0) 963 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret); 964 965 wl1251_ps_elp_sleep(wl); 966 967 out: 968 mutex_unlock(&wl->mutex); 969 970 return ret; 971 } 972 973 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw, 974 struct ieee80211_vif *vif, 975 struct ieee80211_bss_conf *bss_conf, 976 u32 changed) 977 { 978 struct wl1251 *wl = hw->priv; 979 struct sk_buff *beacon, *skb; 980 int ret; 981 982 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed"); 983 984 mutex_lock(&wl->mutex); 985 986 ret = wl1251_ps_elp_wakeup(wl); 987 if (ret < 0) 988 goto out; 989 990 if (changed & BSS_CHANGED_CQM) { 991 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold, 992 WL1251_DEFAULT_LOW_RSSI_WEIGHT, 993 WL1251_DEFAULT_LOW_RSSI_DEPTH, 994 WL1251_ACX_LOW_RSSI_TYPE_EDGE); 995 if (ret < 0) 996 goto out; 997 wl->rssi_thold = bss_conf->cqm_rssi_thold; 998 } 999 1000 if (changed & BSS_CHANGED_BSSID) { 1001 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN); 1002 1003 skb = ieee80211_nullfunc_get(wl->hw, wl->vif); 1004 if (!skb) 1005 goto out_sleep; 1006 1007 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA, 1008 skb->data, skb->len); 1009 dev_kfree_skb(skb); 1010 if (ret < 0) 1011 goto out_sleep; 1012 1013 ret = wl1251_build_qos_null_data(wl); 1014 if (ret < 0) 1015 goto out; 1016 1017 if (wl->bss_type != BSS_TYPE_IBSS) { 1018 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1019 wl->beacon_int, wl->dtim_period); 1020 if (ret < 0) 1021 goto out_sleep; 1022 } 1023 } 1024 1025 if (changed & BSS_CHANGED_ASSOC) { 1026 if (bss_conf->assoc) { 1027 wl->beacon_int = bss_conf->beacon_int; 1028 1029 skb = ieee80211_pspoll_get(wl->hw, wl->vif); 1030 if (!skb) 1031 goto out_sleep; 1032 1033 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL, 1034 skb->data, 1035 skb->len); 1036 dev_kfree_skb(skb); 1037 if (ret < 0) 1038 goto out_sleep; 1039 1040 ret = wl1251_acx_aid(wl, bss_conf->aid); 1041 if (ret < 0) 1042 goto out_sleep; 1043 } else { 1044 /* use defaults when not associated */ 1045 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1046 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1047 } 1048 } 1049 if (changed & BSS_CHANGED_ERP_SLOT) { 1050 if (bss_conf->use_short_slot) 1051 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT); 1052 else 1053 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG); 1054 if (ret < 0) { 1055 wl1251_warning("Set slot time failed %d", ret); 1056 goto out_sleep; 1057 } 1058 } 1059 1060 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 1061 if (bss_conf->use_short_preamble) 1062 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT); 1063 else 1064 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG); 1065 } 1066 1067 if (changed & BSS_CHANGED_ERP_CTS_PROT) { 1068 if (bss_conf->use_cts_prot) 1069 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE); 1070 else 1071 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE); 1072 if (ret < 0) { 1073 wl1251_warning("Set ctsprotect failed %d", ret); 1074 goto out_sleep; 1075 } 1076 } 1077 1078 if (changed & BSS_CHANGED_BEACON) { 1079 beacon = ieee80211_beacon_get(hw, vif); 1080 if (!beacon) 1081 goto out_sleep; 1082 1083 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data, 1084 beacon->len); 1085 1086 if (ret < 0) { 1087 dev_kfree_skb(beacon); 1088 goto out_sleep; 1089 } 1090 1091 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data, 1092 beacon->len); 1093 1094 dev_kfree_skb(beacon); 1095 1096 if (ret < 0) 1097 goto out_sleep; 1098 1099 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int, 1100 wl->channel, wl->dtim_period); 1101 1102 if (ret < 0) 1103 goto out_sleep; 1104 } 1105 1106 out_sleep: 1107 wl1251_ps_elp_sleep(wl); 1108 1109 out: 1110 mutex_unlock(&wl->mutex); 1111 } 1112 1113 1114 /* can't be const, mac80211 writes to this */ 1115 static struct ieee80211_rate wl1251_rates[] = { 1116 { .bitrate = 10, 1117 .hw_value = 0x1, 1118 .hw_value_short = 0x1, }, 1119 { .bitrate = 20, 1120 .hw_value = 0x2, 1121 .hw_value_short = 0x2, 1122 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1123 { .bitrate = 55, 1124 .hw_value = 0x4, 1125 .hw_value_short = 0x4, 1126 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1127 { .bitrate = 110, 1128 .hw_value = 0x20, 1129 .hw_value_short = 0x20, 1130 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1131 { .bitrate = 60, 1132 .hw_value = 0x8, 1133 .hw_value_short = 0x8, }, 1134 { .bitrate = 90, 1135 .hw_value = 0x10, 1136 .hw_value_short = 0x10, }, 1137 { .bitrate = 120, 1138 .hw_value = 0x40, 1139 .hw_value_short = 0x40, }, 1140 { .bitrate = 180, 1141 .hw_value = 0x80, 1142 .hw_value_short = 0x80, }, 1143 { .bitrate = 240, 1144 .hw_value = 0x200, 1145 .hw_value_short = 0x200, }, 1146 { .bitrate = 360, 1147 .hw_value = 0x400, 1148 .hw_value_short = 0x400, }, 1149 { .bitrate = 480, 1150 .hw_value = 0x800, 1151 .hw_value_short = 0x800, }, 1152 { .bitrate = 540, 1153 .hw_value = 0x1000, 1154 .hw_value_short = 0x1000, }, 1155 }; 1156 1157 /* can't be const, mac80211 writes to this */ 1158 static struct ieee80211_channel wl1251_channels[] = { 1159 { .hw_value = 1, .center_freq = 2412}, 1160 { .hw_value = 2, .center_freq = 2417}, 1161 { .hw_value = 3, .center_freq = 2422}, 1162 { .hw_value = 4, .center_freq = 2427}, 1163 { .hw_value = 5, .center_freq = 2432}, 1164 { .hw_value = 6, .center_freq = 2437}, 1165 { .hw_value = 7, .center_freq = 2442}, 1166 { .hw_value = 8, .center_freq = 2447}, 1167 { .hw_value = 9, .center_freq = 2452}, 1168 { .hw_value = 10, .center_freq = 2457}, 1169 { .hw_value = 11, .center_freq = 2462}, 1170 { .hw_value = 12, .center_freq = 2467}, 1171 { .hw_value = 13, .center_freq = 2472}, 1172 }; 1173 1174 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, 1175 struct ieee80211_vif *vif, u16 queue, 1176 const struct ieee80211_tx_queue_params *params) 1177 { 1178 enum wl1251_acx_ps_scheme ps_scheme; 1179 struct wl1251 *wl = hw->priv; 1180 int ret; 1181 1182 mutex_lock(&wl->mutex); 1183 1184 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue); 1185 1186 ret = wl1251_ps_elp_wakeup(wl); 1187 if (ret < 0) 1188 goto out; 1189 1190 /* mac80211 uses units of 32 usec */ 1191 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue), 1192 params->cw_min, params->cw_max, 1193 params->aifs, params->txop * 32); 1194 if (ret < 0) 1195 goto out_sleep; 1196 1197 if (params->uapsd) 1198 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER; 1199 else 1200 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY; 1201 1202 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue), 1203 CHANNEL_TYPE_EDCF, 1204 wl1251_tx_get_queue(queue), ps_scheme, 1205 WL1251_ACX_ACK_POLICY_LEGACY); 1206 if (ret < 0) 1207 goto out_sleep; 1208 1209 out_sleep: 1210 wl1251_ps_elp_sleep(wl); 1211 1212 out: 1213 mutex_unlock(&wl->mutex); 1214 1215 return ret; 1216 } 1217 1218 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx, 1219 struct survey_info *survey) 1220 { 1221 struct wl1251 *wl = hw->priv; 1222 struct ieee80211_conf *conf = &hw->conf; 1223 1224 if (idx != 0) 1225 return -ENOENT; 1226 1227 survey->channel = conf->chandef.chan; 1228 survey->filled = SURVEY_INFO_NOISE_DBM; 1229 survey->noise = wl->noise; 1230 1231 return 0; 1232 } 1233 1234 /* can't be const, mac80211 writes to this */ 1235 static struct ieee80211_supported_band wl1251_band_2ghz = { 1236 .channels = wl1251_channels, 1237 .n_channels = ARRAY_SIZE(wl1251_channels), 1238 .bitrates = wl1251_rates, 1239 .n_bitrates = ARRAY_SIZE(wl1251_rates), 1240 }; 1241 1242 static const struct ieee80211_ops wl1251_ops = { 1243 .start = wl1251_op_start, 1244 .stop = wl1251_op_stop, 1245 .add_interface = wl1251_op_add_interface, 1246 .remove_interface = wl1251_op_remove_interface, 1247 .config = wl1251_op_config, 1248 .configure_filter = wl1251_op_configure_filter, 1249 .tx = wl1251_op_tx, 1250 .set_key = wl1251_op_set_key, 1251 .hw_scan = wl1251_op_hw_scan, 1252 .bss_info_changed = wl1251_op_bss_info_changed, 1253 .set_rts_threshold = wl1251_op_set_rts_threshold, 1254 .conf_tx = wl1251_op_conf_tx, 1255 .get_survey = wl1251_op_get_survey, 1256 }; 1257 1258 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data) 1259 { 1260 unsigned long timeout; 1261 1262 wl1251_reg_write32(wl, EE_ADDR, offset); 1263 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ); 1264 1265 /* EE_CTL_READ clears when data is ready */ 1266 timeout = jiffies + msecs_to_jiffies(100); 1267 while (1) { 1268 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ)) 1269 break; 1270 1271 if (time_after(jiffies, timeout)) 1272 return -ETIMEDOUT; 1273 1274 msleep(1); 1275 } 1276 1277 *data = wl1251_reg_read32(wl, EE_DATA); 1278 return 0; 1279 } 1280 1281 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset, 1282 u8 *data, size_t len) 1283 { 1284 size_t i; 1285 int ret; 1286 1287 wl1251_reg_write32(wl, EE_START, 0); 1288 1289 for (i = 0; i < len; i++) { 1290 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]); 1291 if (ret < 0) 1292 return ret; 1293 } 1294 1295 return 0; 1296 } 1297 1298 static int wl1251_read_eeprom_mac(struct wl1251 *wl) 1299 { 1300 u8 mac[ETH_ALEN]; 1301 int i, ret; 1302 1303 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE); 1304 1305 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac)); 1306 if (ret < 0) { 1307 wl1251_warning("failed to read MAC address from EEPROM"); 1308 return ret; 1309 } 1310 1311 /* MAC is stored in reverse order */ 1312 for (i = 0; i < ETH_ALEN; i++) 1313 wl->mac_addr[i] = mac[ETH_ALEN - i - 1]; 1314 1315 return 0; 1316 } 1317 1318 static int wl1251_register_hw(struct wl1251 *wl) 1319 { 1320 int ret; 1321 1322 if (wl->mac80211_registered) 1323 return 0; 1324 1325 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 1326 1327 ret = ieee80211_register_hw(wl->hw); 1328 if (ret < 0) { 1329 wl1251_error("unable to register mac80211 hw: %d", ret); 1330 return ret; 1331 } 1332 1333 wl->mac80211_registered = true; 1334 1335 wl1251_notice("loaded"); 1336 1337 return 0; 1338 } 1339 1340 int wl1251_init_ieee80211(struct wl1251 *wl) 1341 { 1342 int ret; 1343 1344 /* The tx descriptor buffer and the TKIP space */ 1345 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc) 1346 + WL1251_TKIP_IV_SPACE; 1347 1348 /* unit us */ 1349 /* FIXME: find a proper value */ 1350 wl->hw->channel_change_time = 10000; 1351 1352 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM | 1353 IEEE80211_HW_SUPPORTS_PS | 1354 IEEE80211_HW_SUPPORTS_UAPSD; 1355 1356 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1357 BIT(NL80211_IFTYPE_ADHOC); 1358 wl->hw->wiphy->max_scan_ssids = 1; 1359 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz; 1360 1361 wl->hw->queues = 4; 1362 1363 if (wl->use_eeprom) 1364 wl1251_read_eeprom_mac(wl); 1365 1366 ret = wl1251_register_hw(wl); 1367 if (ret) 1368 goto out; 1369 1370 wl1251_debugfs_init(wl); 1371 wl1251_notice("initialized"); 1372 1373 ret = 0; 1374 1375 out: 1376 return ret; 1377 } 1378 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211); 1379 1380 struct ieee80211_hw *wl1251_alloc_hw(void) 1381 { 1382 struct ieee80211_hw *hw; 1383 struct wl1251 *wl; 1384 int i; 1385 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf}; 1386 1387 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops); 1388 if (!hw) { 1389 wl1251_error("could not alloc ieee80211_hw"); 1390 return ERR_PTR(-ENOMEM); 1391 } 1392 1393 wl = hw->priv; 1394 memset(wl, 0, sizeof(*wl)); 1395 1396 wl->hw = hw; 1397 1398 wl->data_in_count = 0; 1399 1400 skb_queue_head_init(&wl->tx_queue); 1401 1402 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work); 1403 wl->channel = WL1251_DEFAULT_CHANNEL; 1404 wl->scanning = false; 1405 wl->default_key = 0; 1406 wl->listen_int = 1; 1407 wl->rx_counter = 0; 1408 wl->rx_handled = 0; 1409 wl->rx_current_buffer = 0; 1410 wl->rx_last_id = 0; 1411 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 1412 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 1413 wl->elp = false; 1414 wl->station_mode = STATION_ACTIVE_MODE; 1415 wl->psm_requested = false; 1416 wl->tx_queue_stopped = false; 1417 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 1418 wl->rssi_thold = 0; 1419 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1420 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1421 wl->vif = NULL; 1422 1423 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) 1424 wl->tx_frames[i] = NULL; 1425 1426 wl->next_tx_complete = 0; 1427 1428 INIT_WORK(&wl->irq_work, wl1251_irq_work); 1429 INIT_WORK(&wl->tx_work, wl1251_tx_work); 1430 1431 /* 1432 * In case our MAC address is not correctly set, 1433 * we use a random but Nokia MAC. 1434 */ 1435 memcpy(wl->mac_addr, nokia_oui, 3); 1436 get_random_bytes(wl->mac_addr + 3, 3); 1437 1438 wl->state = WL1251_STATE_OFF; 1439 mutex_init(&wl->mutex); 1440 1441 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE; 1442 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE; 1443 1444 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL); 1445 if (!wl->rx_descriptor) { 1446 wl1251_error("could not allocate memory for rx descriptor"); 1447 ieee80211_free_hw(hw); 1448 return ERR_PTR(-ENOMEM); 1449 } 1450 1451 return hw; 1452 } 1453 EXPORT_SYMBOL_GPL(wl1251_alloc_hw); 1454 1455 int wl1251_free_hw(struct wl1251 *wl) 1456 { 1457 ieee80211_unregister_hw(wl->hw); 1458 1459 wl1251_debugfs_exit(wl); 1460 1461 kfree(wl->target_mem_map); 1462 kfree(wl->data_path); 1463 vfree(wl->fw); 1464 wl->fw = NULL; 1465 kfree(wl->nvs); 1466 wl->nvs = NULL; 1467 1468 kfree(wl->rx_descriptor); 1469 wl->rx_descriptor = NULL; 1470 1471 ieee80211_free_hw(wl->hw); 1472 1473 return 0; 1474 } 1475 EXPORT_SYMBOL_GPL(wl1251_free_hw); 1476 1477 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core"); 1478 MODULE_LICENSE("GPL"); 1479 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>"); 1480 MODULE_FIRMWARE(WL1251_FW_NAME); 1481