main.c revision f7ad1eed4d4b9d5f0b7ada151d5670e7cb33a6e7
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 45void wl1251_enable_interrupts(struct wl1251 *wl) 46{ 47 wl->if_ops->enable_irq(wl); 48} 49 50void wl1251_disable_interrupts(struct wl1251 *wl) 51{ 52 wl->if_ops->disable_irq(wl); 53} 54 55static int wl1251_power_off(struct wl1251 *wl) 56{ 57 return wl->if_ops->power(wl, false); 58} 59 60static int wl1251_power_on(struct wl1251 *wl) 61{ 62 return wl->if_ops->power(wl, true); 63} 64 65static 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 98out: 99 release_firmware(fw); 100 101 return ret; 102} 103 104static 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 135out: 136 release_firmware(fw); 137 138 return ret; 139} 140 141static 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 153static 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 211out: 212 return ret; 213} 214 215#define WL1251_IRQ_LOOP_COUNT 10 216static 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 317out_sleep: 318 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask)); 319 wl1251_ps_elp_sleep(wl); 320 321out: 322 mutex_unlock(&wl->mutex); 323} 324 325static 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 353out: 354 return ret; 355} 356 357static 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 387static 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 428out: 429 if (ret < 0) 430 wl1251_power_off(wl); 431 432 mutex_unlock(&wl->mutex); 433 434 return ret; 435} 436 437static 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->psm_entry_retry = 0; 483 wl->tx_queue_stopped = false; 484 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 485 wl->rssi_thold = 0; 486 wl->channel = WL1251_DEFAULT_CHANNEL; 487 488 wl1251_debugfs_reset(wl); 489 490 mutex_unlock(&wl->mutex); 491} 492 493static int wl1251_op_add_interface(struct ieee80211_hw *hw, 494 struct ieee80211_vif *vif) 495{ 496 struct wl1251 *wl = hw->priv; 497 int ret = 0; 498 499 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 500 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 501 502 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM", 503 vif->type, vif->addr); 504 505 mutex_lock(&wl->mutex); 506 if (wl->vif) { 507 ret = -EBUSY; 508 goto out; 509 } 510 511 wl->vif = vif; 512 513 switch (vif->type) { 514 case NL80211_IFTYPE_STATION: 515 wl->bss_type = BSS_TYPE_STA_BSS; 516 break; 517 case NL80211_IFTYPE_ADHOC: 518 wl->bss_type = BSS_TYPE_IBSS; 519 break; 520 default: 521 ret = -EOPNOTSUPP; 522 goto out; 523 } 524 525 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) { 526 memcpy(wl->mac_addr, vif->addr, ETH_ALEN); 527 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 528 ret = wl1251_acx_station_id(wl); 529 if (ret < 0) 530 goto out; 531 } 532 533out: 534 mutex_unlock(&wl->mutex); 535 return ret; 536} 537 538static void wl1251_op_remove_interface(struct ieee80211_hw *hw, 539 struct ieee80211_vif *vif) 540{ 541 struct wl1251 *wl = hw->priv; 542 543 mutex_lock(&wl->mutex); 544 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface"); 545 wl->vif = NULL; 546 mutex_unlock(&wl->mutex); 547} 548 549static int wl1251_build_qos_null_data(struct wl1251 *wl) 550{ 551 struct ieee80211_qos_hdr template; 552 553 memset(&template, 0, sizeof(template)); 554 555 memcpy(template.addr1, wl->bssid, ETH_ALEN); 556 memcpy(template.addr2, wl->mac_addr, ETH_ALEN); 557 memcpy(template.addr3, wl->bssid, ETH_ALEN); 558 559 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | 560 IEEE80211_STYPE_QOS_NULLFUNC | 561 IEEE80211_FCTL_TODS); 562 563 /* FIXME: not sure what priority to use here */ 564 template.qos_ctrl = cpu_to_le16(0); 565 566 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template, 567 sizeof(template)); 568} 569 570static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed) 571{ 572 struct wl1251 *wl = hw->priv; 573 struct ieee80211_conf *conf = &hw->conf; 574 int channel, ret = 0; 575 576 channel = ieee80211_frequency_to_channel( 577 conf->chandef.chan->center_freq); 578 579 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d", 580 channel, 581 conf->flags & IEEE80211_CONF_PS ? "on" : "off", 582 conf->power_level); 583 584 mutex_lock(&wl->mutex); 585 586 ret = wl1251_ps_elp_wakeup(wl); 587 if (ret < 0) 588 goto out; 589 590 if (channel != wl->channel) { 591 wl->channel = channel; 592 593 ret = wl1251_join(wl, wl->bss_type, wl->channel, 594 wl->beacon_int, wl->dtim_period); 595 if (ret < 0) 596 goto out_sleep; 597 } 598 599 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) { 600 wl1251_debug(DEBUG_PSM, "psm enabled"); 601 602 wl->psm_requested = true; 603 604 wl->dtim_period = conf->ps_dtim_period; 605 606 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int, 607 wl->dtim_period); 608 609 /* 610 * mac80211 enables PSM only if we're already associated. 611 */ 612 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE); 613 if (ret < 0) 614 goto out_sleep; 615 } else if (!(conf->flags & IEEE80211_CONF_PS) && 616 wl->psm_requested) { 617 wl1251_debug(DEBUG_PSM, "psm disabled"); 618 619 wl->psm_requested = false; 620 621 if (wl->station_mode != STATION_ACTIVE_MODE) { 622 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 623 if (ret < 0) 624 goto out_sleep; 625 } 626 } 627 628 if (changed & IEEE80211_CONF_CHANGE_IDLE && !wl->scanning) { 629 if (conf->flags & IEEE80211_CONF_IDLE) { 630 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 631 if (ret < 0) 632 goto out_sleep; 633 } else { 634 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 635 if (ret < 0) 636 goto out_sleep; 637 ret = wl1251_join(wl, wl->bss_type, wl->channel, 638 wl->beacon_int, wl->dtim_period); 639 if (ret < 0) 640 goto out_sleep; 641 } 642 } 643 644 if (conf->power_level != wl->power_level) { 645 ret = wl1251_acx_tx_power(wl, conf->power_level); 646 if (ret < 0) 647 goto out_sleep; 648 649 wl->power_level = conf->power_level; 650 } 651 652out_sleep: 653 wl1251_ps_elp_sleep(wl); 654 655out: 656 mutex_unlock(&wl->mutex); 657 658 return ret; 659} 660 661#define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \ 662 FIF_ALLMULTI | \ 663 FIF_FCSFAIL | \ 664 FIF_BCN_PRBRESP_PROMISC | \ 665 FIF_CONTROL | \ 666 FIF_OTHER_BSS | \ 667 FIF_PROBE_REQ) 668 669static void wl1251_op_configure_filter(struct ieee80211_hw *hw, 670 unsigned int changed, 671 unsigned int *total,u64 multicast) 672{ 673 struct wl1251 *wl = hw->priv; 674 int ret; 675 676 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter"); 677 678 *total &= WL1251_SUPPORTED_FILTERS; 679 changed &= WL1251_SUPPORTED_FILTERS; 680 681 if (changed == 0) 682 /* no filters which we support changed */ 683 return; 684 685 mutex_lock(&wl->mutex); 686 687 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 688 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 689 690 if (*total & FIF_PROMISC_IN_BSS) { 691 wl->rx_config |= CFG_BSSID_FILTER_EN; 692 wl->rx_config |= CFG_RX_ALL_GOOD; 693 } 694 if (*total & FIF_ALLMULTI) 695 /* 696 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive 697 * all multicast frames 698 */ 699 wl->rx_config &= ~CFG_MC_FILTER_EN; 700 if (*total & FIF_FCSFAIL) 701 wl->rx_filter |= CFG_RX_FCS_ERROR; 702 if (*total & FIF_BCN_PRBRESP_PROMISC) { 703 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 704 wl->rx_config &= ~CFG_SSID_FILTER_EN; 705 } 706 if (*total & FIF_CONTROL) 707 wl->rx_filter |= CFG_RX_CTL_EN; 708 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid)) 709 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 710 if (*total & FIF_PROBE_REQ) 711 wl->rx_filter |= CFG_RX_PREQ_EN; 712 713 if (wl->state == WL1251_STATE_OFF) 714 goto out; 715 716 ret = wl1251_ps_elp_wakeup(wl); 717 if (ret < 0) 718 goto out; 719 720 /* send filters to firmware */ 721 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter); 722 723 wl1251_ps_elp_sleep(wl); 724 725out: 726 mutex_unlock(&wl->mutex); 727} 728 729/* HW encryption */ 730static int wl1251_set_key_type(struct wl1251 *wl, 731 struct wl1251_cmd_set_keys *key, 732 enum set_key_cmd cmd, 733 struct ieee80211_key_conf *mac80211_key, 734 const u8 *addr) 735{ 736 switch (mac80211_key->cipher) { 737 case WLAN_CIPHER_SUITE_WEP40: 738 case WLAN_CIPHER_SUITE_WEP104: 739 if (is_broadcast_ether_addr(addr)) 740 key->key_type = KEY_WEP_DEFAULT; 741 else 742 key->key_type = KEY_WEP_ADDR; 743 744 mac80211_key->hw_key_idx = mac80211_key->keyidx; 745 break; 746 case WLAN_CIPHER_SUITE_TKIP: 747 if (is_broadcast_ether_addr(addr)) 748 key->key_type = KEY_TKIP_MIC_GROUP; 749 else 750 key->key_type = KEY_TKIP_MIC_PAIRWISE; 751 752 mac80211_key->hw_key_idx = mac80211_key->keyidx; 753 break; 754 case WLAN_CIPHER_SUITE_CCMP: 755 if (is_broadcast_ether_addr(addr)) 756 key->key_type = KEY_AES_GROUP; 757 else 758 key->key_type = KEY_AES_PAIRWISE; 759 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 760 break; 761 default: 762 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher); 763 return -EOPNOTSUPP; 764 } 765 766 return 0; 767} 768 769static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 770 struct ieee80211_vif *vif, 771 struct ieee80211_sta *sta, 772 struct ieee80211_key_conf *key) 773{ 774 struct wl1251 *wl = hw->priv; 775 struct wl1251_cmd_set_keys *wl_cmd; 776 const u8 *addr; 777 int ret; 778 779 static const u8 bcast_addr[ETH_ALEN] = 780 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 781 782 wl1251_debug(DEBUG_MAC80211, "mac80211 set key"); 783 784 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL); 785 if (!wl_cmd) { 786 ret = -ENOMEM; 787 goto out; 788 } 789 790 addr = sta ? sta->addr : bcast_addr; 791 792 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd); 793 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN); 794 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x", 795 key->cipher, key->keyidx, key->keylen, key->flags); 796 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen); 797 798 if (is_zero_ether_addr(addr)) { 799 /* We dont support TX only encryption */ 800 ret = -EOPNOTSUPP; 801 goto out; 802 } 803 804 mutex_lock(&wl->mutex); 805 806 ret = wl1251_ps_elp_wakeup(wl); 807 if (ret < 0) 808 goto out_unlock; 809 810 switch (cmd) { 811 case SET_KEY: 812 wl_cmd->key_action = KEY_ADD_OR_REPLACE; 813 break; 814 case DISABLE_KEY: 815 wl_cmd->key_action = KEY_REMOVE; 816 break; 817 default: 818 wl1251_error("Unsupported key cmd 0x%x", cmd); 819 break; 820 } 821 822 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr); 823 if (ret < 0) { 824 wl1251_error("Set KEY type failed"); 825 goto out_sleep; 826 } 827 828 if (wl_cmd->key_type != KEY_WEP_DEFAULT) 829 memcpy(wl_cmd->addr, addr, ETH_ALEN); 830 831 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) || 832 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) { 833 /* 834 * We get the key in the following form: 835 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes) 836 * but the target is expecting: 837 * TKIP - RX MIC - TX MIC 838 */ 839 memcpy(wl_cmd->key, key->key, 16); 840 memcpy(wl_cmd->key + 16, key->key + 24, 8); 841 memcpy(wl_cmd->key + 24, key->key + 16, 8); 842 843 } else { 844 memcpy(wl_cmd->key, key->key, key->keylen); 845 } 846 wl_cmd->key_size = key->keylen; 847 848 wl_cmd->id = key->keyidx; 849 wl_cmd->ssid_profile = 0; 850 851 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd)); 852 853 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd)); 854 if (ret < 0) { 855 wl1251_warning("could not set keys"); 856 goto out_sleep; 857 } 858 859out_sleep: 860 wl1251_ps_elp_sleep(wl); 861 862out_unlock: 863 mutex_unlock(&wl->mutex); 864 865out: 866 kfree(wl_cmd); 867 868 return ret; 869} 870 871static int wl1251_op_hw_scan(struct ieee80211_hw *hw, 872 struct ieee80211_vif *vif, 873 struct cfg80211_scan_request *req) 874{ 875 struct wl1251 *wl = hw->priv; 876 struct sk_buff *skb; 877 size_t ssid_len = 0; 878 u8 *ssid = NULL; 879 int ret; 880 881 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan"); 882 883 if (req->n_ssids) { 884 ssid = req->ssids[0].ssid; 885 ssid_len = req->ssids[0].ssid_len; 886 } 887 888 mutex_lock(&wl->mutex); 889 890 if (wl->scanning) { 891 wl1251_debug(DEBUG_SCAN, "scan already in progress"); 892 ret = -EINVAL; 893 goto out; 894 } 895 896 ret = wl1251_ps_elp_wakeup(wl); 897 if (ret < 0) 898 goto out; 899 900 if (hw->conf.flags & IEEE80211_CONF_IDLE) { 901 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 902 if (ret < 0) 903 goto out_sleep; 904 ret = wl1251_join(wl, wl->bss_type, wl->channel, 905 wl->beacon_int, wl->dtim_period); 906 if (ret < 0) 907 goto out_sleep; 908 } 909 910 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len, 911 req->ie_len); 912 if (!skb) { 913 ret = -ENOMEM; 914 goto out_idle; 915 } 916 if (req->ie_len) 917 memcpy(skb_put(skb, req->ie_len), req->ie, req->ie_len); 918 919 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data, 920 skb->len); 921 dev_kfree_skb(skb); 922 if (ret < 0) 923 goto out_idle; 924 925 ret = wl1251_cmd_trigger_scan_to(wl, 0); 926 if (ret < 0) 927 goto out_idle; 928 929 wl->scanning = true; 930 931 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels, 932 req->n_channels, WL1251_SCAN_NUM_PROBES); 933 if (ret < 0) { 934 wl1251_debug(DEBUG_SCAN, "scan failed %d", ret); 935 wl->scanning = false; 936 goto out_idle; 937 } 938 goto out_sleep; 939 940out_idle: 941 if (hw->conf.flags & IEEE80211_CONF_IDLE) 942 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 943out_sleep: 944 wl1251_ps_elp_sleep(wl); 945 946out: 947 mutex_unlock(&wl->mutex); 948 949 return ret; 950} 951 952static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 953{ 954 struct wl1251 *wl = hw->priv; 955 int ret; 956 957 mutex_lock(&wl->mutex); 958 959 ret = wl1251_ps_elp_wakeup(wl); 960 if (ret < 0) 961 goto out; 962 963 ret = wl1251_acx_rts_threshold(wl, (u16) value); 964 if (ret < 0) 965 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret); 966 967 wl1251_ps_elp_sleep(wl); 968 969out: 970 mutex_unlock(&wl->mutex); 971 972 return ret; 973} 974 975static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw, 976 struct ieee80211_vif *vif, 977 struct ieee80211_bss_conf *bss_conf, 978 u32 changed) 979{ 980 struct wl1251 *wl = hw->priv; 981 struct sk_buff *beacon, *skb; 982 int ret; 983 984 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed"); 985 986 mutex_lock(&wl->mutex); 987 988 ret = wl1251_ps_elp_wakeup(wl); 989 if (ret < 0) 990 goto out; 991 992 if (changed & BSS_CHANGED_CQM) { 993 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold, 994 WL1251_DEFAULT_LOW_RSSI_WEIGHT, 995 WL1251_DEFAULT_LOW_RSSI_DEPTH, 996 WL1251_ACX_LOW_RSSI_TYPE_EDGE); 997 if (ret < 0) 998 goto out; 999 wl->rssi_thold = bss_conf->cqm_rssi_thold; 1000 } 1001 1002 if (changed & BSS_CHANGED_BSSID) { 1003 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN); 1004 1005 skb = ieee80211_nullfunc_get(wl->hw, wl->vif); 1006 if (!skb) 1007 goto out_sleep; 1008 1009 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA, 1010 skb->data, skb->len); 1011 dev_kfree_skb(skb); 1012 if (ret < 0) 1013 goto out_sleep; 1014 1015 ret = wl1251_build_qos_null_data(wl); 1016 if (ret < 0) 1017 goto out; 1018 1019 if (wl->bss_type != BSS_TYPE_IBSS) { 1020 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1021 wl->beacon_int, wl->dtim_period); 1022 if (ret < 0) 1023 goto out_sleep; 1024 } 1025 } 1026 1027 if (changed & BSS_CHANGED_ASSOC) { 1028 if (bss_conf->assoc) { 1029 wl->beacon_int = bss_conf->beacon_int; 1030 1031 skb = ieee80211_pspoll_get(wl->hw, wl->vif); 1032 if (!skb) 1033 goto out_sleep; 1034 1035 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL, 1036 skb->data, 1037 skb->len); 1038 dev_kfree_skb(skb); 1039 if (ret < 0) 1040 goto out_sleep; 1041 1042 ret = wl1251_acx_aid(wl, bss_conf->aid); 1043 if (ret < 0) 1044 goto out_sleep; 1045 } else { 1046 /* use defaults when not associated */ 1047 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1048 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1049 } 1050 } 1051 if (changed & BSS_CHANGED_ERP_SLOT) { 1052 if (bss_conf->use_short_slot) 1053 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT); 1054 else 1055 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG); 1056 if (ret < 0) { 1057 wl1251_warning("Set slot time failed %d", ret); 1058 goto out_sleep; 1059 } 1060 } 1061 1062 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 1063 if (bss_conf->use_short_preamble) 1064 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT); 1065 else 1066 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG); 1067 } 1068 1069 if (changed & BSS_CHANGED_ERP_CTS_PROT) { 1070 if (bss_conf->use_cts_prot) 1071 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE); 1072 else 1073 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE); 1074 if (ret < 0) { 1075 wl1251_warning("Set ctsprotect failed %d", ret); 1076 goto out_sleep; 1077 } 1078 } 1079 1080 if (changed & BSS_CHANGED_BEACON) { 1081 beacon = ieee80211_beacon_get(hw, vif); 1082 if (!beacon) 1083 goto out_sleep; 1084 1085 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data, 1086 beacon->len); 1087 1088 if (ret < 0) { 1089 dev_kfree_skb(beacon); 1090 goto out_sleep; 1091 } 1092 1093 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data, 1094 beacon->len); 1095 1096 dev_kfree_skb(beacon); 1097 1098 if (ret < 0) 1099 goto out_sleep; 1100 1101 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int, 1102 wl->channel, wl->dtim_period); 1103 1104 if (ret < 0) 1105 goto out_sleep; 1106 } 1107 1108out_sleep: 1109 wl1251_ps_elp_sleep(wl); 1110 1111out: 1112 mutex_unlock(&wl->mutex); 1113} 1114 1115 1116/* can't be const, mac80211 writes to this */ 1117static struct ieee80211_rate wl1251_rates[] = { 1118 { .bitrate = 10, 1119 .hw_value = 0x1, 1120 .hw_value_short = 0x1, }, 1121 { .bitrate = 20, 1122 .hw_value = 0x2, 1123 .hw_value_short = 0x2, 1124 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1125 { .bitrate = 55, 1126 .hw_value = 0x4, 1127 .hw_value_short = 0x4, 1128 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1129 { .bitrate = 110, 1130 .hw_value = 0x20, 1131 .hw_value_short = 0x20, 1132 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1133 { .bitrate = 60, 1134 .hw_value = 0x8, 1135 .hw_value_short = 0x8, }, 1136 { .bitrate = 90, 1137 .hw_value = 0x10, 1138 .hw_value_short = 0x10, }, 1139 { .bitrate = 120, 1140 .hw_value = 0x40, 1141 .hw_value_short = 0x40, }, 1142 { .bitrate = 180, 1143 .hw_value = 0x80, 1144 .hw_value_short = 0x80, }, 1145 { .bitrate = 240, 1146 .hw_value = 0x200, 1147 .hw_value_short = 0x200, }, 1148 { .bitrate = 360, 1149 .hw_value = 0x400, 1150 .hw_value_short = 0x400, }, 1151 { .bitrate = 480, 1152 .hw_value = 0x800, 1153 .hw_value_short = 0x800, }, 1154 { .bitrate = 540, 1155 .hw_value = 0x1000, 1156 .hw_value_short = 0x1000, }, 1157}; 1158 1159/* can't be const, mac80211 writes to this */ 1160static struct ieee80211_channel wl1251_channels[] = { 1161 { .hw_value = 1, .center_freq = 2412}, 1162 { .hw_value = 2, .center_freq = 2417}, 1163 { .hw_value = 3, .center_freq = 2422}, 1164 { .hw_value = 4, .center_freq = 2427}, 1165 { .hw_value = 5, .center_freq = 2432}, 1166 { .hw_value = 6, .center_freq = 2437}, 1167 { .hw_value = 7, .center_freq = 2442}, 1168 { .hw_value = 8, .center_freq = 2447}, 1169 { .hw_value = 9, .center_freq = 2452}, 1170 { .hw_value = 10, .center_freq = 2457}, 1171 { .hw_value = 11, .center_freq = 2462}, 1172 { .hw_value = 12, .center_freq = 2467}, 1173 { .hw_value = 13, .center_freq = 2472}, 1174}; 1175 1176static int wl1251_op_conf_tx(struct ieee80211_hw *hw, 1177 struct ieee80211_vif *vif, u16 queue, 1178 const struct ieee80211_tx_queue_params *params) 1179{ 1180 enum wl1251_acx_ps_scheme ps_scheme; 1181 struct wl1251 *wl = hw->priv; 1182 int ret; 1183 1184 mutex_lock(&wl->mutex); 1185 1186 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue); 1187 1188 ret = wl1251_ps_elp_wakeup(wl); 1189 if (ret < 0) 1190 goto out; 1191 1192 /* mac80211 uses units of 32 usec */ 1193 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue), 1194 params->cw_min, params->cw_max, 1195 params->aifs, params->txop * 32); 1196 if (ret < 0) 1197 goto out_sleep; 1198 1199 if (params->uapsd) 1200 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER; 1201 else 1202 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY; 1203 1204 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue), 1205 CHANNEL_TYPE_EDCF, 1206 wl1251_tx_get_queue(queue), ps_scheme, 1207 WL1251_ACX_ACK_POLICY_LEGACY); 1208 if (ret < 0) 1209 goto out_sleep; 1210 1211out_sleep: 1212 wl1251_ps_elp_sleep(wl); 1213 1214out: 1215 mutex_unlock(&wl->mutex); 1216 1217 return ret; 1218} 1219 1220static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx, 1221 struct survey_info *survey) 1222{ 1223 struct wl1251 *wl = hw->priv; 1224 struct ieee80211_conf *conf = &hw->conf; 1225 1226 if (idx != 0) 1227 return -ENOENT; 1228 1229 survey->channel = conf->chandef.chan; 1230 survey->filled = SURVEY_INFO_NOISE_DBM; 1231 survey->noise = wl->noise; 1232 1233 return 0; 1234} 1235 1236/* can't be const, mac80211 writes to this */ 1237static struct ieee80211_supported_band wl1251_band_2ghz = { 1238 .channels = wl1251_channels, 1239 .n_channels = ARRAY_SIZE(wl1251_channels), 1240 .bitrates = wl1251_rates, 1241 .n_bitrates = ARRAY_SIZE(wl1251_rates), 1242}; 1243 1244static const struct ieee80211_ops wl1251_ops = { 1245 .start = wl1251_op_start, 1246 .stop = wl1251_op_stop, 1247 .add_interface = wl1251_op_add_interface, 1248 .remove_interface = wl1251_op_remove_interface, 1249 .config = wl1251_op_config, 1250 .configure_filter = wl1251_op_configure_filter, 1251 .tx = wl1251_op_tx, 1252 .set_key = wl1251_op_set_key, 1253 .hw_scan = wl1251_op_hw_scan, 1254 .bss_info_changed = wl1251_op_bss_info_changed, 1255 .set_rts_threshold = wl1251_op_set_rts_threshold, 1256 .conf_tx = wl1251_op_conf_tx, 1257 .get_survey = wl1251_op_get_survey, 1258}; 1259 1260static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data) 1261{ 1262 unsigned long timeout; 1263 1264 wl1251_reg_write32(wl, EE_ADDR, offset); 1265 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ); 1266 1267 /* EE_CTL_READ clears when data is ready */ 1268 timeout = jiffies + msecs_to_jiffies(100); 1269 while (1) { 1270 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ)) 1271 break; 1272 1273 if (time_after(jiffies, timeout)) 1274 return -ETIMEDOUT; 1275 1276 msleep(1); 1277 } 1278 1279 *data = wl1251_reg_read32(wl, EE_DATA); 1280 return 0; 1281} 1282 1283static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset, 1284 u8 *data, size_t len) 1285{ 1286 size_t i; 1287 int ret; 1288 1289 wl1251_reg_write32(wl, EE_START, 0); 1290 1291 for (i = 0; i < len; i++) { 1292 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]); 1293 if (ret < 0) 1294 return ret; 1295 } 1296 1297 return 0; 1298} 1299 1300static int wl1251_read_eeprom_mac(struct wl1251 *wl) 1301{ 1302 u8 mac[ETH_ALEN]; 1303 int i, ret; 1304 1305 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE); 1306 1307 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac)); 1308 if (ret < 0) { 1309 wl1251_warning("failed to read MAC address from EEPROM"); 1310 return ret; 1311 } 1312 1313 /* MAC is stored in reverse order */ 1314 for (i = 0; i < ETH_ALEN; i++) 1315 wl->mac_addr[i] = mac[ETH_ALEN - i - 1]; 1316 1317 return 0; 1318} 1319 1320static int wl1251_register_hw(struct wl1251 *wl) 1321{ 1322 int ret; 1323 1324 if (wl->mac80211_registered) 1325 return 0; 1326 1327 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 1328 1329 ret = ieee80211_register_hw(wl->hw); 1330 if (ret < 0) { 1331 wl1251_error("unable to register mac80211 hw: %d", ret); 1332 return ret; 1333 } 1334 1335 wl->mac80211_registered = true; 1336 1337 wl1251_notice("loaded"); 1338 1339 return 0; 1340} 1341 1342int wl1251_init_ieee80211(struct wl1251 *wl) 1343{ 1344 int ret; 1345 1346 /* The tx descriptor buffer and the TKIP space */ 1347 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc) 1348 + WL1251_TKIP_IV_SPACE; 1349 1350 /* unit us */ 1351 /* FIXME: find a proper value */ 1352 wl->hw->channel_change_time = 10000; 1353 1354 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM | 1355 IEEE80211_HW_SUPPORTS_PS | 1356 IEEE80211_HW_SUPPORTS_UAPSD; 1357 1358 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1359 BIT(NL80211_IFTYPE_ADHOC); 1360 wl->hw->wiphy->max_scan_ssids = 1; 1361 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz; 1362 1363 wl->hw->queues = 4; 1364 1365 if (wl->use_eeprom) 1366 wl1251_read_eeprom_mac(wl); 1367 1368 ret = wl1251_register_hw(wl); 1369 if (ret) 1370 goto out; 1371 1372 wl1251_debugfs_init(wl); 1373 wl1251_notice("initialized"); 1374 1375 ret = 0; 1376 1377out: 1378 return ret; 1379} 1380EXPORT_SYMBOL_GPL(wl1251_init_ieee80211); 1381 1382struct ieee80211_hw *wl1251_alloc_hw(void) 1383{ 1384 struct ieee80211_hw *hw; 1385 struct wl1251 *wl; 1386 int i; 1387 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf}; 1388 1389 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops); 1390 if (!hw) { 1391 wl1251_error("could not alloc ieee80211_hw"); 1392 return ERR_PTR(-ENOMEM); 1393 } 1394 1395 wl = hw->priv; 1396 memset(wl, 0, sizeof(*wl)); 1397 1398 wl->hw = hw; 1399 1400 wl->data_in_count = 0; 1401 1402 skb_queue_head_init(&wl->tx_queue); 1403 1404 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work); 1405 wl->channel = WL1251_DEFAULT_CHANNEL; 1406 wl->scanning = false; 1407 wl->default_key = 0; 1408 wl->listen_int = 1; 1409 wl->rx_counter = 0; 1410 wl->rx_handled = 0; 1411 wl->rx_current_buffer = 0; 1412 wl->rx_last_id = 0; 1413 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 1414 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 1415 wl->elp = false; 1416 wl->station_mode = STATION_ACTIVE_MODE; 1417 wl->psm_requested = false; 1418 wl->psm_entry_retry = 0; 1419 wl->tx_queue_stopped = false; 1420 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 1421 wl->rssi_thold = 0; 1422 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1423 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1424 wl->vif = NULL; 1425 1426 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) 1427 wl->tx_frames[i] = NULL; 1428 1429 wl->next_tx_complete = 0; 1430 1431 INIT_WORK(&wl->irq_work, wl1251_irq_work); 1432 INIT_WORK(&wl->tx_work, wl1251_tx_work); 1433 1434 /* 1435 * In case our MAC address is not correctly set, 1436 * we use a random but Nokia MAC. 1437 */ 1438 memcpy(wl->mac_addr, nokia_oui, 3); 1439 get_random_bytes(wl->mac_addr + 3, 3); 1440 1441 wl->state = WL1251_STATE_OFF; 1442 mutex_init(&wl->mutex); 1443 1444 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE; 1445 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE; 1446 1447 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL); 1448 if (!wl->rx_descriptor) { 1449 wl1251_error("could not allocate memory for rx descriptor"); 1450 ieee80211_free_hw(hw); 1451 return ERR_PTR(-ENOMEM); 1452 } 1453 1454 return hw; 1455} 1456EXPORT_SYMBOL_GPL(wl1251_alloc_hw); 1457 1458int wl1251_free_hw(struct wl1251 *wl) 1459{ 1460 ieee80211_unregister_hw(wl->hw); 1461 1462 wl1251_debugfs_exit(wl); 1463 1464 kfree(wl->target_mem_map); 1465 kfree(wl->data_path); 1466 vfree(wl->fw); 1467 wl->fw = NULL; 1468 kfree(wl->nvs); 1469 wl->nvs = NULL; 1470 1471 kfree(wl->rx_descriptor); 1472 wl->rx_descriptor = NULL; 1473 1474 ieee80211_free_hw(wl->hw); 1475 1476 return 0; 1477} 1478EXPORT_SYMBOL_GPL(wl1251_free_hw); 1479 1480MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core"); 1481MODULE_LICENSE("GPL"); 1482MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>"); 1483MODULE_FIRMWARE(WL1251_FW_NAME); 1484