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 #include <linux/netdevice.h> 32 33 #include "wl1251.h" 34 #include "wl12xx_80211.h" 35 #include "reg.h" 36 #include "io.h" 37 #include "cmd.h" 38 #include "event.h" 39 #include "tx.h" 40 #include "rx.h" 41 #include "ps.h" 42 #include "init.h" 43 #include "debugfs.h" 44 #include "boot.h" 45 46 void wl1251_enable_interrupts(struct wl1251 *wl) 47 { 48 wl->if_ops->enable_irq(wl); 49 } 50 51 void wl1251_disable_interrupts(struct wl1251 *wl) 52 { 53 wl->if_ops->disable_irq(wl); 54 } 55 56 static int wl1251_power_off(struct wl1251 *wl) 57 { 58 return wl->if_ops->power(wl, false); 59 } 60 61 static int wl1251_power_on(struct wl1251 *wl) 62 { 63 return wl->if_ops->power(wl, true); 64 } 65 66 static int wl1251_fetch_firmware(struct wl1251 *wl) 67 { 68 const struct firmware *fw; 69 struct device *dev = wiphy_dev(wl->hw->wiphy); 70 int ret; 71 72 ret = request_firmware(&fw, WL1251_FW_NAME, dev); 73 74 if (ret < 0) { 75 wl1251_error("could not get firmware: %d", ret); 76 return ret; 77 } 78 79 if (fw->size % 4) { 80 wl1251_error("firmware size is not multiple of 32 bits: %zu", 81 fw->size); 82 ret = -EILSEQ; 83 goto out; 84 } 85 86 wl->fw_len = fw->size; 87 wl->fw = vmalloc(wl->fw_len); 88 89 if (!wl->fw) { 90 wl1251_error("could not allocate memory for the firmware"); 91 ret = -ENOMEM; 92 goto out; 93 } 94 95 memcpy(wl->fw, fw->data, wl->fw_len); 96 97 ret = 0; 98 99 out: 100 release_firmware(fw); 101 102 return ret; 103 } 104 105 static int wl1251_fetch_nvs(struct wl1251 *wl) 106 { 107 const struct firmware *fw; 108 struct device *dev = wiphy_dev(wl->hw->wiphy); 109 int ret; 110 111 ret = request_firmware(&fw, WL1251_NVS_NAME, dev); 112 113 if (ret < 0) { 114 wl1251_error("could not get nvs file: %d", ret); 115 return ret; 116 } 117 118 if (fw->size % 4) { 119 wl1251_error("nvs size is not multiple of 32 bits: %zu", 120 fw->size); 121 ret = -EILSEQ; 122 goto out; 123 } 124 125 wl->nvs_len = fw->size; 126 wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL); 127 128 if (!wl->nvs) { 129 wl1251_error("could not allocate memory for the nvs file"); 130 ret = -ENOMEM; 131 goto out; 132 } 133 134 ret = 0; 135 136 out: 137 release_firmware(fw); 138 139 return ret; 140 } 141 142 static void wl1251_fw_wakeup(struct wl1251 *wl) 143 { 144 u32 elp_reg; 145 146 elp_reg = ELPCTRL_WAKE_UP; 147 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg); 148 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR); 149 150 if (!(elp_reg & ELPCTRL_WLAN_READY)) 151 wl1251_warning("WLAN not ready"); 152 } 153 154 static int wl1251_chip_wakeup(struct wl1251 *wl) 155 { 156 int ret; 157 158 ret = wl1251_power_on(wl); 159 if (ret < 0) 160 return ret; 161 162 msleep(WL1251_POWER_ON_SLEEP); 163 wl->if_ops->reset(wl); 164 165 /* We don't need a real memory partition here, because we only want 166 * to use the registers at this point. */ 167 wl1251_set_partition(wl, 168 0x00000000, 169 0x00000000, 170 REGISTERS_BASE, 171 REGISTERS_DOWN_SIZE); 172 173 /* ELP module wake up */ 174 wl1251_fw_wakeup(wl); 175 176 /* whal_FwCtrl_BootSm() */ 177 178 /* 0. read chip id from CHIP_ID */ 179 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B); 180 181 /* 1. check if chip id is valid */ 182 183 switch (wl->chip_id) { 184 case CHIP_ID_1251_PG12: 185 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)", 186 wl->chip_id); 187 break; 188 case CHIP_ID_1251_PG11: 189 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)", 190 wl->chip_id); 191 break; 192 case CHIP_ID_1251_PG10: 193 default: 194 wl1251_error("unsupported chip id: 0x%x", wl->chip_id); 195 ret = -ENODEV; 196 goto out; 197 } 198 199 if (wl->fw == NULL) { 200 ret = wl1251_fetch_firmware(wl); 201 if (ret < 0) 202 goto out; 203 } 204 205 if (wl->nvs == NULL && !wl->use_eeprom) { 206 /* No NVS from netlink, try to get it from the filesystem */ 207 ret = wl1251_fetch_nvs(wl); 208 if (ret < 0) 209 goto out; 210 } 211 212 out: 213 return ret; 214 } 215 216 #define WL1251_IRQ_LOOP_COUNT 10 217 static void wl1251_irq_work(struct work_struct *work) 218 { 219 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT; 220 struct wl1251 *wl = 221 container_of(work, struct wl1251, irq_work); 222 int ret; 223 224 mutex_lock(&wl->mutex); 225 226 wl1251_debug(DEBUG_IRQ, "IRQ work"); 227 228 if (wl->state == WL1251_STATE_OFF) 229 goto out; 230 231 ret = wl1251_ps_elp_wakeup(wl); 232 if (ret < 0) 233 goto out; 234 235 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL); 236 237 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); 238 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr); 239 240 do { 241 if (wl->data_path) { 242 wl->rx_counter = wl1251_mem_read32( 243 wl, wl->data_path->rx_control_addr); 244 245 /* We handle a frmware bug here */ 246 switch ((wl->rx_counter - wl->rx_handled) & 0xf) { 247 case 0: 248 wl1251_debug(DEBUG_IRQ, 249 "RX: FW and host in sync"); 250 intr &= ~WL1251_ACX_INTR_RX0_DATA; 251 intr &= ~WL1251_ACX_INTR_RX1_DATA; 252 break; 253 case 1: 254 wl1251_debug(DEBUG_IRQ, "RX: FW +1"); 255 intr |= WL1251_ACX_INTR_RX0_DATA; 256 intr &= ~WL1251_ACX_INTR_RX1_DATA; 257 break; 258 case 2: 259 wl1251_debug(DEBUG_IRQ, "RX: FW +2"); 260 intr |= WL1251_ACX_INTR_RX0_DATA; 261 intr |= WL1251_ACX_INTR_RX1_DATA; 262 break; 263 default: 264 wl1251_warning( 265 "RX: FW and host out of sync: %d", 266 wl->rx_counter - wl->rx_handled); 267 break; 268 } 269 270 wl->rx_handled = wl->rx_counter; 271 272 wl1251_debug(DEBUG_IRQ, "RX counter: %d", 273 wl->rx_counter); 274 } 275 276 intr &= wl->intr_mask; 277 278 if (intr == 0) { 279 wl1251_debug(DEBUG_IRQ, "INTR is 0"); 280 goto out_sleep; 281 } 282 283 if (intr & WL1251_ACX_INTR_RX0_DATA) { 284 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA"); 285 wl1251_rx(wl); 286 } 287 288 if (intr & WL1251_ACX_INTR_RX1_DATA) { 289 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA"); 290 wl1251_rx(wl); 291 } 292 293 if (intr & WL1251_ACX_INTR_TX_RESULT) { 294 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT"); 295 wl1251_tx_complete(wl); 296 } 297 298 if (intr & WL1251_ACX_INTR_EVENT_A) { 299 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A"); 300 wl1251_event_handle(wl, 0); 301 } 302 303 if (intr & WL1251_ACX_INTR_EVENT_B) { 304 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B"); 305 wl1251_event_handle(wl, 1); 306 } 307 308 if (intr & WL1251_ACX_INTR_INIT_COMPLETE) 309 wl1251_debug(DEBUG_IRQ, 310 "WL1251_ACX_INTR_INIT_COMPLETE"); 311 312 if (--ctr == 0) 313 break; 314 315 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); 316 } while (intr); 317 318 out_sleep: 319 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask)); 320 wl1251_ps_elp_sleep(wl); 321 322 out: 323 mutex_unlock(&wl->mutex); 324 } 325 326 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel, 327 u16 beacon_interval, u8 dtim_period) 328 { 329 int ret; 330 331 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE, 332 DEFAULT_HW_GEN_MODULATION_TYPE, 333 wl->tx_mgmt_frm_rate, 334 wl->tx_mgmt_frm_mod); 335 if (ret < 0) 336 goto out; 337 338 /* 339 * Join command applies filters, and if we are not associated, 340 * BSSID filter must be disabled for association to work. 341 */ 342 if (is_zero_ether_addr(wl->bssid)) 343 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 344 345 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval, 346 dtim_period); 347 if (ret < 0) 348 goto out; 349 350 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100); 351 if (ret < 0) 352 wl1251_warning("join timeout"); 353 354 out: 355 return ret; 356 } 357 358 static void wl1251_op_tx(struct ieee80211_hw *hw, 359 struct ieee80211_tx_control *control, 360 struct sk_buff *skb) 361 { 362 struct wl1251 *wl = hw->priv; 363 unsigned long flags; 364 365 skb_queue_tail(&wl->tx_queue, skb); 366 367 /* 368 * The chip specific setup must run before the first TX packet - 369 * before that, the tx_work will not be initialized! 370 */ 371 372 ieee80211_queue_work(wl->hw, &wl->tx_work); 373 374 /* 375 * The workqueue is slow to process the tx_queue and we need stop 376 * the queue here, otherwise the queue will get too long. 377 */ 378 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) { 379 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues"); 380 381 spin_lock_irqsave(&wl->wl_lock, flags); 382 ieee80211_stop_queues(wl->hw); 383 wl->tx_queue_stopped = true; 384 spin_unlock_irqrestore(&wl->wl_lock, flags); 385 } 386 } 387 388 static int wl1251_op_start(struct ieee80211_hw *hw) 389 { 390 struct wl1251 *wl = hw->priv; 391 struct wiphy *wiphy = hw->wiphy; 392 int ret = 0; 393 394 wl1251_debug(DEBUG_MAC80211, "mac80211 start"); 395 396 mutex_lock(&wl->mutex); 397 398 if (wl->state != WL1251_STATE_OFF) { 399 wl1251_error("cannot start because not in off state: %d", 400 wl->state); 401 ret = -EBUSY; 402 goto out; 403 } 404 405 ret = wl1251_chip_wakeup(wl); 406 if (ret < 0) 407 goto out; 408 409 ret = wl1251_boot(wl); 410 if (ret < 0) 411 goto out; 412 413 ret = wl1251_hw_init(wl); 414 if (ret < 0) 415 goto out; 416 417 ret = wl1251_acx_station_id(wl); 418 if (ret < 0) 419 goto out; 420 421 wl->state = WL1251_STATE_ON; 422 423 wl1251_info("firmware booted (%s)", wl->fw_ver); 424 425 /* update hw/fw version info in wiphy struct */ 426 wiphy->hw_version = wl->chip_id; 427 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version)); 428 429 out: 430 if (ret < 0) 431 wl1251_power_off(wl); 432 433 mutex_unlock(&wl->mutex); 434 435 return ret; 436 } 437 438 static void wl1251_op_stop(struct ieee80211_hw *hw) 439 { 440 struct wl1251 *wl = hw->priv; 441 442 wl1251_info("down"); 443 444 wl1251_debug(DEBUG_MAC80211, "mac80211 stop"); 445 446 mutex_lock(&wl->mutex); 447 448 WARN_ON(wl->state != WL1251_STATE_ON); 449 450 if (wl->scanning) { 451 ieee80211_scan_completed(wl->hw, true); 452 wl->scanning = false; 453 } 454 455 wl->state = WL1251_STATE_OFF; 456 457 wl1251_disable_interrupts(wl); 458 459 mutex_unlock(&wl->mutex); 460 461 cancel_work_sync(&wl->irq_work); 462 cancel_work_sync(&wl->tx_work); 463 cancel_delayed_work_sync(&wl->elp_work); 464 465 mutex_lock(&wl->mutex); 466 467 /* let's notify MAC80211 about the remaining pending TX frames */ 468 wl1251_tx_flush(wl); 469 wl1251_power_off(wl); 470 471 memset(wl->bssid, 0, ETH_ALEN); 472 wl->listen_int = 1; 473 wl->bss_type = MAX_BSS_TYPE; 474 475 wl->data_in_count = 0; 476 wl->rx_counter = 0; 477 wl->rx_handled = 0; 478 wl->rx_current_buffer = 0; 479 wl->rx_last_id = 0; 480 wl->next_tx_complete = 0; 481 wl->elp = false; 482 wl->station_mode = STATION_ACTIVE_MODE; 483 wl->psm_entry_retry = 0; 484 wl->tx_queue_stopped = false; 485 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 486 wl->rssi_thold = 0; 487 wl->channel = WL1251_DEFAULT_CHANNEL; 488 wl->monitor_present = false; 489 wl->joined = false; 490 491 wl1251_debugfs_reset(wl); 492 493 mutex_unlock(&wl->mutex); 494 } 495 496 static int wl1251_op_add_interface(struct ieee80211_hw *hw, 497 struct ieee80211_vif *vif) 498 { 499 struct wl1251 *wl = hw->priv; 500 int ret = 0; 501 502 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 503 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 504 505 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM", 506 vif->type, vif->addr); 507 508 mutex_lock(&wl->mutex); 509 if (wl->vif) { 510 ret = -EBUSY; 511 goto out; 512 } 513 514 wl->vif = vif; 515 516 switch (vif->type) { 517 case NL80211_IFTYPE_STATION: 518 wl->bss_type = BSS_TYPE_STA_BSS; 519 break; 520 case NL80211_IFTYPE_ADHOC: 521 wl->bss_type = BSS_TYPE_IBSS; 522 break; 523 default: 524 ret = -EOPNOTSUPP; 525 goto out; 526 } 527 528 if (!ether_addr_equal_unaligned(wl->mac_addr, vif->addr)) { 529 memcpy(wl->mac_addr, vif->addr, ETH_ALEN); 530 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 531 ret = wl1251_acx_station_id(wl); 532 if (ret < 0) 533 goto out; 534 } 535 536 out: 537 mutex_unlock(&wl->mutex); 538 return ret; 539 } 540 541 static void wl1251_op_remove_interface(struct ieee80211_hw *hw, 542 struct ieee80211_vif *vif) 543 { 544 struct wl1251 *wl = hw->priv; 545 546 mutex_lock(&wl->mutex); 547 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface"); 548 wl->vif = NULL; 549 memset(wl->bssid, 0, ETH_ALEN); 550 mutex_unlock(&wl->mutex); 551 } 552 553 static int wl1251_build_qos_null_data(struct wl1251 *wl) 554 { 555 struct ieee80211_qos_hdr template; 556 557 memset(&template, 0, sizeof(template)); 558 559 memcpy(template.addr1, wl->bssid, ETH_ALEN); 560 memcpy(template.addr2, wl->mac_addr, ETH_ALEN); 561 memcpy(template.addr3, wl->bssid, ETH_ALEN); 562 563 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | 564 IEEE80211_STYPE_QOS_NULLFUNC | 565 IEEE80211_FCTL_TODS); 566 567 /* FIXME: not sure what priority to use here */ 568 template.qos_ctrl = cpu_to_le16(0); 569 570 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template, 571 sizeof(template)); 572 } 573 574 static bool wl1251_can_do_pm(struct ieee80211_conf *conf, struct wl1251 *wl) 575 { 576 return (conf->flags & IEEE80211_CONF_PS) && !wl->monitor_present; 577 } 578 579 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed) 580 { 581 struct wl1251 *wl = hw->priv; 582 struct ieee80211_conf *conf = &hw->conf; 583 int channel, ret = 0; 584 585 channel = ieee80211_frequency_to_channel( 586 conf->chandef.chan->center_freq); 587 588 wl1251_debug(DEBUG_MAC80211, 589 "mac80211 config ch %d monitor %s psm %s power %d", 590 channel, 591 conf->flags & IEEE80211_CONF_MONITOR ? "on" : "off", 592 conf->flags & IEEE80211_CONF_PS ? "on" : "off", 593 conf->power_level); 594 595 mutex_lock(&wl->mutex); 596 597 ret = wl1251_ps_elp_wakeup(wl); 598 if (ret < 0) 599 goto out; 600 601 if (changed & IEEE80211_CONF_CHANGE_MONITOR) { 602 u32 mode; 603 604 if (conf->flags & IEEE80211_CONF_MONITOR) { 605 wl->monitor_present = true; 606 mode = DF_SNIFF_MODE_ENABLE | DF_ENCRYPTION_DISABLE; 607 } else { 608 wl->monitor_present = false; 609 mode = 0; 610 } 611 612 ret = wl1251_acx_feature_cfg(wl, mode); 613 if (ret < 0) 614 goto out_sleep; 615 } 616 617 if (channel != wl->channel) { 618 wl->channel = channel; 619 620 /* 621 * Use ENABLE_RX command for channel switching when no 622 * interface is present (monitor mode only). 623 * This leaves the tx path disabled in firmware, whereas 624 * the usual JOIN command seems to transmit some frames 625 * at firmware level. 626 */ 627 if (wl->vif == NULL) { 628 wl->joined = false; 629 ret = wl1251_cmd_data_path_rx(wl, wl->channel, 1); 630 } else { 631 ret = wl1251_join(wl, wl->bss_type, wl->channel, 632 wl->beacon_int, wl->dtim_period); 633 } 634 if (ret < 0) 635 goto out_sleep; 636 } 637 638 if (wl1251_can_do_pm(conf, wl) && !wl->psm_requested) { 639 wl1251_debug(DEBUG_PSM, "psm enabled"); 640 641 wl->psm_requested = true; 642 643 wl->dtim_period = conf->ps_dtim_period; 644 645 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int, 646 wl->dtim_period); 647 648 /* 649 * mac80211 enables PSM only if we're already associated. 650 */ 651 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE); 652 if (ret < 0) 653 goto out_sleep; 654 } else if (!wl1251_can_do_pm(conf, wl) && wl->psm_requested) { 655 wl1251_debug(DEBUG_PSM, "psm disabled"); 656 657 wl->psm_requested = false; 658 659 if (wl->station_mode != STATION_ACTIVE_MODE) { 660 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 661 if (ret < 0) 662 goto out_sleep; 663 } 664 } 665 666 if (changed & IEEE80211_CONF_CHANGE_IDLE && !wl->scanning) { 667 if (conf->flags & IEEE80211_CONF_IDLE) { 668 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 669 if (ret < 0) 670 goto out_sleep; 671 } else { 672 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 673 if (ret < 0) 674 goto out_sleep; 675 ret = wl1251_join(wl, wl->bss_type, wl->channel, 676 wl->beacon_int, wl->dtim_period); 677 if (ret < 0) 678 goto out_sleep; 679 } 680 } 681 682 if (conf->power_level != wl->power_level) { 683 ret = wl1251_acx_tx_power(wl, conf->power_level); 684 if (ret < 0) 685 goto out_sleep; 686 687 wl->power_level = conf->power_level; 688 } 689 690 /* 691 * Tell stack that connection is lost because hw encryption isn't 692 * supported in monitor mode. 693 * This requires temporary enabling of the hw connection monitor flag 694 */ 695 if ((changed & IEEE80211_CONF_CHANGE_MONITOR) && wl->vif) { 696 wl->hw->flags |= IEEE80211_HW_CONNECTION_MONITOR; 697 ieee80211_connection_loss(wl->vif); 698 } 699 700 out_sleep: 701 wl1251_ps_elp_sleep(wl); 702 703 out: 704 mutex_unlock(&wl->mutex); 705 706 return ret; 707 } 708 709 struct wl1251_filter_params { 710 bool enabled; 711 int mc_list_length; 712 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN]; 713 }; 714 715 static u64 wl1251_op_prepare_multicast(struct ieee80211_hw *hw, 716 struct netdev_hw_addr_list *mc_list) 717 { 718 struct wl1251_filter_params *fp; 719 struct netdev_hw_addr *ha; 720 struct wl1251 *wl = hw->priv; 721 722 if (unlikely(wl->state == WL1251_STATE_OFF)) 723 return 0; 724 725 fp = kzalloc(sizeof(*fp), GFP_ATOMIC); 726 if (!fp) { 727 wl1251_error("Out of memory setting filters."); 728 return 0; 729 } 730 731 /* update multicast filtering parameters */ 732 fp->mc_list_length = 0; 733 if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) { 734 fp->enabled = false; 735 } else { 736 fp->enabled = true; 737 netdev_hw_addr_list_for_each(ha, mc_list) { 738 memcpy(fp->mc_list[fp->mc_list_length], 739 ha->addr, ETH_ALEN); 740 fp->mc_list_length++; 741 } 742 } 743 744 return (u64)(unsigned long)fp; 745 } 746 747 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \ 748 FIF_ALLMULTI | \ 749 FIF_FCSFAIL | \ 750 FIF_BCN_PRBRESP_PROMISC | \ 751 FIF_CONTROL | \ 752 FIF_OTHER_BSS | \ 753 FIF_PROBE_REQ) 754 755 static void wl1251_op_configure_filter(struct ieee80211_hw *hw, 756 unsigned int changed, 757 unsigned int *total, u64 multicast) 758 { 759 struct wl1251_filter_params *fp = (void *)(unsigned long)multicast; 760 struct wl1251 *wl = hw->priv; 761 int ret; 762 763 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter"); 764 765 *total &= WL1251_SUPPORTED_FILTERS; 766 changed &= WL1251_SUPPORTED_FILTERS; 767 768 if (changed == 0) { 769 /* no filters which we support changed */ 770 kfree(fp); 771 return; 772 } 773 774 mutex_lock(&wl->mutex); 775 776 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 777 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 778 779 if (*total & FIF_PROMISC_IN_BSS) { 780 wl->rx_config |= CFG_BSSID_FILTER_EN; 781 wl->rx_config |= CFG_RX_ALL_GOOD; 782 } 783 if (*total & FIF_ALLMULTI) 784 /* 785 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive 786 * all multicast frames 787 */ 788 wl->rx_config &= ~CFG_MC_FILTER_EN; 789 if (*total & FIF_FCSFAIL) 790 wl->rx_filter |= CFG_RX_FCS_ERROR; 791 if (*total & FIF_BCN_PRBRESP_PROMISC) { 792 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 793 wl->rx_config &= ~CFG_SSID_FILTER_EN; 794 } 795 if (*total & FIF_CONTROL) 796 wl->rx_filter |= CFG_RX_CTL_EN; 797 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid)) 798 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 799 if (*total & FIF_PROBE_REQ) 800 wl->rx_filter |= CFG_RX_PREQ_EN; 801 802 if (wl->state == WL1251_STATE_OFF) 803 goto out; 804 805 ret = wl1251_ps_elp_wakeup(wl); 806 if (ret < 0) 807 goto out; 808 809 if (*total & FIF_ALLMULTI || *total & FIF_PROMISC_IN_BSS) 810 ret = wl1251_acx_group_address_tbl(wl, false, NULL, 0); 811 else if (fp) 812 ret = wl1251_acx_group_address_tbl(wl, fp->enabled, 813 fp->mc_list, 814 fp->mc_list_length); 815 if (ret < 0) 816 goto out; 817 818 /* send filters to firmware */ 819 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter); 820 821 wl1251_ps_elp_sleep(wl); 822 823 out: 824 mutex_unlock(&wl->mutex); 825 kfree(fp); 826 } 827 828 /* HW encryption */ 829 static int wl1251_set_key_type(struct wl1251 *wl, 830 struct wl1251_cmd_set_keys *key, 831 enum set_key_cmd cmd, 832 struct ieee80211_key_conf *mac80211_key, 833 const u8 *addr) 834 { 835 switch (mac80211_key->cipher) { 836 case WLAN_CIPHER_SUITE_WEP40: 837 case WLAN_CIPHER_SUITE_WEP104: 838 if (is_broadcast_ether_addr(addr)) 839 key->key_type = KEY_WEP_DEFAULT; 840 else 841 key->key_type = KEY_WEP_ADDR; 842 843 mac80211_key->hw_key_idx = mac80211_key->keyidx; 844 break; 845 case WLAN_CIPHER_SUITE_TKIP: 846 if (is_broadcast_ether_addr(addr)) 847 key->key_type = KEY_TKIP_MIC_GROUP; 848 else 849 key->key_type = KEY_TKIP_MIC_PAIRWISE; 850 851 mac80211_key->hw_key_idx = mac80211_key->keyidx; 852 break; 853 case WLAN_CIPHER_SUITE_CCMP: 854 if (is_broadcast_ether_addr(addr)) 855 key->key_type = KEY_AES_GROUP; 856 else 857 key->key_type = KEY_AES_PAIRWISE; 858 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 859 break; 860 default: 861 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher); 862 return -EOPNOTSUPP; 863 } 864 865 return 0; 866 } 867 868 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 869 struct ieee80211_vif *vif, 870 struct ieee80211_sta *sta, 871 struct ieee80211_key_conf *key) 872 { 873 struct wl1251 *wl = hw->priv; 874 struct wl1251_cmd_set_keys *wl_cmd; 875 const u8 *addr; 876 int ret; 877 878 static const u8 bcast_addr[ETH_ALEN] = 879 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 880 881 wl1251_debug(DEBUG_MAC80211, "mac80211 set key"); 882 883 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL); 884 if (!wl_cmd) { 885 ret = -ENOMEM; 886 goto out; 887 } 888 889 addr = sta ? sta->addr : bcast_addr; 890 891 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd); 892 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN); 893 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x", 894 key->cipher, key->keyidx, key->keylen, key->flags); 895 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen); 896 897 if (is_zero_ether_addr(addr)) { 898 /* We dont support TX only encryption */ 899 ret = -EOPNOTSUPP; 900 goto out; 901 } 902 903 mutex_lock(&wl->mutex); 904 905 switch (cmd) { 906 case SET_KEY: 907 if (wl->monitor_present) { 908 ret = -EOPNOTSUPP; 909 goto out_unlock; 910 } 911 wl_cmd->key_action = KEY_ADD_OR_REPLACE; 912 break; 913 case DISABLE_KEY: 914 wl_cmd->key_action = KEY_REMOVE; 915 break; 916 default: 917 wl1251_error("Unsupported key cmd 0x%x", cmd); 918 break; 919 } 920 921 ret = wl1251_ps_elp_wakeup(wl); 922 if (ret < 0) 923 goto out_unlock; 924 925 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr); 926 if (ret < 0) { 927 wl1251_error("Set KEY type failed"); 928 goto out_sleep; 929 } 930 931 if (wl_cmd->key_type != KEY_WEP_DEFAULT) 932 memcpy(wl_cmd->addr, addr, ETH_ALEN); 933 934 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) || 935 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) { 936 /* 937 * We get the key in the following form: 938 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes) 939 * but the target is expecting: 940 * TKIP - RX MIC - TX MIC 941 */ 942 memcpy(wl_cmd->key, key->key, 16); 943 memcpy(wl_cmd->key + 16, key->key + 24, 8); 944 memcpy(wl_cmd->key + 24, key->key + 16, 8); 945 946 } else { 947 memcpy(wl_cmd->key, key->key, key->keylen); 948 } 949 wl_cmd->key_size = key->keylen; 950 951 wl_cmd->id = key->keyidx; 952 wl_cmd->ssid_profile = 0; 953 954 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd)); 955 956 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd)); 957 if (ret < 0) { 958 wl1251_warning("could not set keys"); 959 goto out_sleep; 960 } 961 962 out_sleep: 963 wl1251_ps_elp_sleep(wl); 964 965 out_unlock: 966 mutex_unlock(&wl->mutex); 967 968 out: 969 kfree(wl_cmd); 970 971 return ret; 972 } 973 974 static int wl1251_op_hw_scan(struct ieee80211_hw *hw, 975 struct ieee80211_vif *vif, 976 struct cfg80211_scan_request *req) 977 { 978 struct wl1251 *wl = hw->priv; 979 struct sk_buff *skb; 980 size_t ssid_len = 0; 981 u8 *ssid = NULL; 982 int ret; 983 984 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan"); 985 986 if (req->n_ssids) { 987 ssid = req->ssids[0].ssid; 988 ssid_len = req->ssids[0].ssid_len; 989 } 990 991 mutex_lock(&wl->mutex); 992 993 if (wl->scanning) { 994 wl1251_debug(DEBUG_SCAN, "scan already in progress"); 995 ret = -EINVAL; 996 goto out; 997 } 998 999 ret = wl1251_ps_elp_wakeup(wl); 1000 if (ret < 0) 1001 goto out; 1002 1003 if (hw->conf.flags & IEEE80211_CONF_IDLE) { 1004 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 1005 if (ret < 0) 1006 goto out_sleep; 1007 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1008 wl->beacon_int, wl->dtim_period); 1009 if (ret < 0) 1010 goto out_sleep; 1011 } 1012 1013 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len, 1014 req->ie_len); 1015 if (!skb) { 1016 ret = -ENOMEM; 1017 goto out_idle; 1018 } 1019 if (req->ie_len) 1020 memcpy(skb_put(skb, req->ie_len), req->ie, req->ie_len); 1021 1022 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data, 1023 skb->len); 1024 dev_kfree_skb(skb); 1025 if (ret < 0) 1026 goto out_idle; 1027 1028 ret = wl1251_cmd_trigger_scan_to(wl, 0); 1029 if (ret < 0) 1030 goto out_idle; 1031 1032 wl->scanning = true; 1033 1034 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels, 1035 req->n_channels, WL1251_SCAN_NUM_PROBES); 1036 if (ret < 0) { 1037 wl1251_debug(DEBUG_SCAN, "scan failed %d", ret); 1038 wl->scanning = false; 1039 goto out_idle; 1040 } 1041 goto out_sleep; 1042 1043 out_idle: 1044 if (hw->conf.flags & IEEE80211_CONF_IDLE) 1045 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 1046 out_sleep: 1047 wl1251_ps_elp_sleep(wl); 1048 1049 out: 1050 mutex_unlock(&wl->mutex); 1051 1052 return ret; 1053 } 1054 1055 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 1056 { 1057 struct wl1251 *wl = hw->priv; 1058 int ret; 1059 1060 mutex_lock(&wl->mutex); 1061 1062 ret = wl1251_ps_elp_wakeup(wl); 1063 if (ret < 0) 1064 goto out; 1065 1066 ret = wl1251_acx_rts_threshold(wl, (u16) value); 1067 if (ret < 0) 1068 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret); 1069 1070 wl1251_ps_elp_sleep(wl); 1071 1072 out: 1073 mutex_unlock(&wl->mutex); 1074 1075 return ret; 1076 } 1077 1078 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw, 1079 struct ieee80211_vif *vif, 1080 struct ieee80211_bss_conf *bss_conf, 1081 u32 changed) 1082 { 1083 struct wl1251 *wl = hw->priv; 1084 struct sk_buff *beacon, *skb; 1085 bool enable; 1086 int ret; 1087 1088 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed"); 1089 1090 mutex_lock(&wl->mutex); 1091 1092 ret = wl1251_ps_elp_wakeup(wl); 1093 if (ret < 0) 1094 goto out; 1095 1096 if (changed & BSS_CHANGED_CQM) { 1097 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold, 1098 WL1251_DEFAULT_LOW_RSSI_WEIGHT, 1099 WL1251_DEFAULT_LOW_RSSI_DEPTH, 1100 WL1251_ACX_LOW_RSSI_TYPE_EDGE); 1101 if (ret < 0) 1102 goto out; 1103 wl->rssi_thold = bss_conf->cqm_rssi_thold; 1104 } 1105 1106 if (changed & BSS_CHANGED_BSSID) { 1107 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN); 1108 1109 skb = ieee80211_nullfunc_get(wl->hw, wl->vif); 1110 if (!skb) 1111 goto out_sleep; 1112 1113 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA, 1114 skb->data, skb->len); 1115 dev_kfree_skb(skb); 1116 if (ret < 0) 1117 goto out_sleep; 1118 1119 ret = wl1251_build_qos_null_data(wl); 1120 if (ret < 0) 1121 goto out; 1122 1123 if (wl->bss_type != BSS_TYPE_IBSS) { 1124 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1125 wl->beacon_int, wl->dtim_period); 1126 if (ret < 0) 1127 goto out_sleep; 1128 } 1129 } 1130 1131 if (changed & BSS_CHANGED_ASSOC) { 1132 /* Disable temporary enabled hw connection monitor flag */ 1133 wl->hw->flags &= ~IEEE80211_HW_CONNECTION_MONITOR; 1134 1135 if (bss_conf->assoc) { 1136 wl->beacon_int = bss_conf->beacon_int; 1137 1138 skb = ieee80211_pspoll_get(wl->hw, wl->vif); 1139 if (!skb) 1140 goto out_sleep; 1141 1142 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL, 1143 skb->data, 1144 skb->len); 1145 dev_kfree_skb(skb); 1146 if (ret < 0) 1147 goto out_sleep; 1148 1149 ret = wl1251_acx_aid(wl, bss_conf->aid); 1150 if (ret < 0) 1151 goto out_sleep; 1152 } else { 1153 /* use defaults when not associated */ 1154 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1155 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1156 } 1157 } 1158 if (changed & BSS_CHANGED_ERP_SLOT) { 1159 if (bss_conf->use_short_slot) 1160 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT); 1161 else 1162 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG); 1163 if (ret < 0) { 1164 wl1251_warning("Set slot time failed %d", ret); 1165 goto out_sleep; 1166 } 1167 } 1168 1169 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 1170 if (bss_conf->use_short_preamble) 1171 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT); 1172 else 1173 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG); 1174 } 1175 1176 if (changed & BSS_CHANGED_ERP_CTS_PROT) { 1177 if (bss_conf->use_cts_prot) 1178 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE); 1179 else 1180 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE); 1181 if (ret < 0) { 1182 wl1251_warning("Set ctsprotect failed %d", ret); 1183 goto out_sleep; 1184 } 1185 } 1186 1187 if (changed & BSS_CHANGED_ARP_FILTER) { 1188 __be32 addr = bss_conf->arp_addr_list[0]; 1189 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS); 1190 1191 enable = bss_conf->arp_addr_cnt == 1 && bss_conf->assoc; 1192 wl1251_acx_arp_ip_filter(wl, enable, addr); 1193 1194 if (ret < 0) 1195 goto out_sleep; 1196 } 1197 1198 if (changed & BSS_CHANGED_BEACON) { 1199 beacon = ieee80211_beacon_get(hw, vif); 1200 if (!beacon) 1201 goto out_sleep; 1202 1203 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data, 1204 beacon->len); 1205 1206 if (ret < 0) { 1207 dev_kfree_skb(beacon); 1208 goto out_sleep; 1209 } 1210 1211 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data, 1212 beacon->len); 1213 1214 dev_kfree_skb(beacon); 1215 1216 if (ret < 0) 1217 goto out_sleep; 1218 1219 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int, 1220 wl->channel, wl->dtim_period); 1221 1222 if (ret < 0) 1223 goto out_sleep; 1224 } 1225 1226 out_sleep: 1227 wl1251_ps_elp_sleep(wl); 1228 1229 out: 1230 mutex_unlock(&wl->mutex); 1231 } 1232 1233 1234 /* can't be const, mac80211 writes to this */ 1235 static struct ieee80211_rate wl1251_rates[] = { 1236 { .bitrate = 10, 1237 .hw_value = 0x1, 1238 .hw_value_short = 0x1, }, 1239 { .bitrate = 20, 1240 .hw_value = 0x2, 1241 .hw_value_short = 0x2, 1242 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1243 { .bitrate = 55, 1244 .hw_value = 0x4, 1245 .hw_value_short = 0x4, 1246 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1247 { .bitrate = 110, 1248 .hw_value = 0x20, 1249 .hw_value_short = 0x20, 1250 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1251 { .bitrate = 60, 1252 .hw_value = 0x8, 1253 .hw_value_short = 0x8, }, 1254 { .bitrate = 90, 1255 .hw_value = 0x10, 1256 .hw_value_short = 0x10, }, 1257 { .bitrate = 120, 1258 .hw_value = 0x40, 1259 .hw_value_short = 0x40, }, 1260 { .bitrate = 180, 1261 .hw_value = 0x80, 1262 .hw_value_short = 0x80, }, 1263 { .bitrate = 240, 1264 .hw_value = 0x200, 1265 .hw_value_short = 0x200, }, 1266 { .bitrate = 360, 1267 .hw_value = 0x400, 1268 .hw_value_short = 0x400, }, 1269 { .bitrate = 480, 1270 .hw_value = 0x800, 1271 .hw_value_short = 0x800, }, 1272 { .bitrate = 540, 1273 .hw_value = 0x1000, 1274 .hw_value_short = 0x1000, }, 1275 }; 1276 1277 /* can't be const, mac80211 writes to this */ 1278 static struct ieee80211_channel wl1251_channels[] = { 1279 { .hw_value = 1, .center_freq = 2412}, 1280 { .hw_value = 2, .center_freq = 2417}, 1281 { .hw_value = 3, .center_freq = 2422}, 1282 { .hw_value = 4, .center_freq = 2427}, 1283 { .hw_value = 5, .center_freq = 2432}, 1284 { .hw_value = 6, .center_freq = 2437}, 1285 { .hw_value = 7, .center_freq = 2442}, 1286 { .hw_value = 8, .center_freq = 2447}, 1287 { .hw_value = 9, .center_freq = 2452}, 1288 { .hw_value = 10, .center_freq = 2457}, 1289 { .hw_value = 11, .center_freq = 2462}, 1290 { .hw_value = 12, .center_freq = 2467}, 1291 { .hw_value = 13, .center_freq = 2472}, 1292 }; 1293 1294 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, 1295 struct ieee80211_vif *vif, u16 queue, 1296 const struct ieee80211_tx_queue_params *params) 1297 { 1298 enum wl1251_acx_ps_scheme ps_scheme; 1299 struct wl1251 *wl = hw->priv; 1300 int ret; 1301 1302 mutex_lock(&wl->mutex); 1303 1304 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue); 1305 1306 ret = wl1251_ps_elp_wakeup(wl); 1307 if (ret < 0) 1308 goto out; 1309 1310 /* mac80211 uses units of 32 usec */ 1311 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue), 1312 params->cw_min, params->cw_max, 1313 params->aifs, params->txop * 32); 1314 if (ret < 0) 1315 goto out_sleep; 1316 1317 if (params->uapsd) 1318 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER; 1319 else 1320 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY; 1321 1322 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue), 1323 CHANNEL_TYPE_EDCF, 1324 wl1251_tx_get_queue(queue), ps_scheme, 1325 WL1251_ACX_ACK_POLICY_LEGACY); 1326 if (ret < 0) 1327 goto out_sleep; 1328 1329 out_sleep: 1330 wl1251_ps_elp_sleep(wl); 1331 1332 out: 1333 mutex_unlock(&wl->mutex); 1334 1335 return ret; 1336 } 1337 1338 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx, 1339 struct survey_info *survey) 1340 { 1341 struct wl1251 *wl = hw->priv; 1342 struct ieee80211_conf *conf = &hw->conf; 1343 1344 if (idx != 0) 1345 return -ENOENT; 1346 1347 survey->channel = conf->chandef.chan; 1348 survey->filled = SURVEY_INFO_NOISE_DBM; 1349 survey->noise = wl->noise; 1350 1351 return 0; 1352 } 1353 1354 /* can't be const, mac80211 writes to this */ 1355 static struct ieee80211_supported_band wl1251_band_2ghz = { 1356 .channels = wl1251_channels, 1357 .n_channels = ARRAY_SIZE(wl1251_channels), 1358 .bitrates = wl1251_rates, 1359 .n_bitrates = ARRAY_SIZE(wl1251_rates), 1360 }; 1361 1362 static const struct ieee80211_ops wl1251_ops = { 1363 .start = wl1251_op_start, 1364 .stop = wl1251_op_stop, 1365 .add_interface = wl1251_op_add_interface, 1366 .remove_interface = wl1251_op_remove_interface, 1367 .config = wl1251_op_config, 1368 .prepare_multicast = wl1251_op_prepare_multicast, 1369 .configure_filter = wl1251_op_configure_filter, 1370 .tx = wl1251_op_tx, 1371 .set_key = wl1251_op_set_key, 1372 .hw_scan = wl1251_op_hw_scan, 1373 .bss_info_changed = wl1251_op_bss_info_changed, 1374 .set_rts_threshold = wl1251_op_set_rts_threshold, 1375 .conf_tx = wl1251_op_conf_tx, 1376 .get_survey = wl1251_op_get_survey, 1377 }; 1378 1379 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data) 1380 { 1381 unsigned long timeout; 1382 1383 wl1251_reg_write32(wl, EE_ADDR, offset); 1384 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ); 1385 1386 /* EE_CTL_READ clears when data is ready */ 1387 timeout = jiffies + msecs_to_jiffies(100); 1388 while (1) { 1389 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ)) 1390 break; 1391 1392 if (time_after(jiffies, timeout)) 1393 return -ETIMEDOUT; 1394 1395 msleep(1); 1396 } 1397 1398 *data = wl1251_reg_read32(wl, EE_DATA); 1399 return 0; 1400 } 1401 1402 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset, 1403 u8 *data, size_t len) 1404 { 1405 size_t i; 1406 int ret; 1407 1408 wl1251_reg_write32(wl, EE_START, 0); 1409 1410 for (i = 0; i < len; i++) { 1411 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]); 1412 if (ret < 0) 1413 return ret; 1414 } 1415 1416 return 0; 1417 } 1418 1419 static int wl1251_read_eeprom_mac(struct wl1251 *wl) 1420 { 1421 u8 mac[ETH_ALEN]; 1422 int i, ret; 1423 1424 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE); 1425 1426 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac)); 1427 if (ret < 0) { 1428 wl1251_warning("failed to read MAC address from EEPROM"); 1429 return ret; 1430 } 1431 1432 /* MAC is stored in reverse order */ 1433 for (i = 0; i < ETH_ALEN; i++) 1434 wl->mac_addr[i] = mac[ETH_ALEN - i - 1]; 1435 1436 return 0; 1437 } 1438 1439 static int wl1251_register_hw(struct wl1251 *wl) 1440 { 1441 int ret; 1442 1443 if (wl->mac80211_registered) 1444 return 0; 1445 1446 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 1447 1448 ret = ieee80211_register_hw(wl->hw); 1449 if (ret < 0) { 1450 wl1251_error("unable to register mac80211 hw: %d", ret); 1451 return ret; 1452 } 1453 1454 wl->mac80211_registered = true; 1455 1456 wl1251_notice("loaded"); 1457 1458 return 0; 1459 } 1460 1461 int wl1251_init_ieee80211(struct wl1251 *wl) 1462 { 1463 int ret; 1464 1465 /* The tx descriptor buffer and the TKIP space */ 1466 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc) 1467 + WL1251_TKIP_IV_SPACE; 1468 1469 /* unit us */ 1470 /* FIXME: find a proper value */ 1471 1472 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM | 1473 IEEE80211_HW_SUPPORTS_PS | 1474 IEEE80211_HW_SUPPORTS_UAPSD; 1475 1476 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1477 BIT(NL80211_IFTYPE_ADHOC); 1478 wl->hw->wiphy->max_scan_ssids = 1; 1479 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz; 1480 1481 wl->hw->queues = 4; 1482 1483 if (wl->use_eeprom) 1484 wl1251_read_eeprom_mac(wl); 1485 1486 ret = wl1251_register_hw(wl); 1487 if (ret) 1488 goto out; 1489 1490 wl1251_debugfs_init(wl); 1491 wl1251_notice("initialized"); 1492 1493 ret = 0; 1494 1495 out: 1496 return ret; 1497 } 1498 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211); 1499 1500 struct ieee80211_hw *wl1251_alloc_hw(void) 1501 { 1502 struct ieee80211_hw *hw; 1503 struct wl1251 *wl; 1504 int i; 1505 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf}; 1506 1507 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops); 1508 if (!hw) { 1509 wl1251_error("could not alloc ieee80211_hw"); 1510 return ERR_PTR(-ENOMEM); 1511 } 1512 1513 wl = hw->priv; 1514 memset(wl, 0, sizeof(*wl)); 1515 1516 wl->hw = hw; 1517 1518 wl->data_in_count = 0; 1519 1520 skb_queue_head_init(&wl->tx_queue); 1521 1522 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work); 1523 wl->channel = WL1251_DEFAULT_CHANNEL; 1524 wl->monitor_present = false; 1525 wl->joined = false; 1526 wl->scanning = false; 1527 wl->bss_type = MAX_BSS_TYPE; 1528 wl->default_key = 0; 1529 wl->listen_int = 1; 1530 wl->rx_counter = 0; 1531 wl->rx_handled = 0; 1532 wl->rx_current_buffer = 0; 1533 wl->rx_last_id = 0; 1534 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 1535 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 1536 wl->elp = false; 1537 wl->station_mode = STATION_ACTIVE_MODE; 1538 wl->psm_requested = false; 1539 wl->psm_entry_retry = 0; 1540 wl->tx_queue_stopped = false; 1541 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 1542 wl->rssi_thold = 0; 1543 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1544 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1545 wl->vif = NULL; 1546 1547 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) 1548 wl->tx_frames[i] = NULL; 1549 1550 wl->next_tx_complete = 0; 1551 1552 INIT_WORK(&wl->irq_work, wl1251_irq_work); 1553 INIT_WORK(&wl->tx_work, wl1251_tx_work); 1554 1555 /* 1556 * In case our MAC address is not correctly set, 1557 * we use a random but Nokia MAC. 1558 */ 1559 memcpy(wl->mac_addr, nokia_oui, 3); 1560 get_random_bytes(wl->mac_addr + 3, 3); 1561 1562 wl->state = WL1251_STATE_OFF; 1563 mutex_init(&wl->mutex); 1564 1565 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE; 1566 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE; 1567 1568 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL); 1569 if (!wl->rx_descriptor) { 1570 wl1251_error("could not allocate memory for rx descriptor"); 1571 ieee80211_free_hw(hw); 1572 return ERR_PTR(-ENOMEM); 1573 } 1574 1575 return hw; 1576 } 1577 EXPORT_SYMBOL_GPL(wl1251_alloc_hw); 1578 1579 int wl1251_free_hw(struct wl1251 *wl) 1580 { 1581 ieee80211_unregister_hw(wl->hw); 1582 1583 wl1251_debugfs_exit(wl); 1584 1585 kfree(wl->target_mem_map); 1586 kfree(wl->data_path); 1587 vfree(wl->fw); 1588 wl->fw = NULL; 1589 kfree(wl->nvs); 1590 wl->nvs = NULL; 1591 1592 kfree(wl->rx_descriptor); 1593 wl->rx_descriptor = NULL; 1594 1595 ieee80211_free_hw(wl->hw); 1596 1597 return 0; 1598 } 1599 EXPORT_SYMBOL_GPL(wl1251_free_hw); 1600 1601 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core"); 1602 MODULE_LICENSE("GPL"); 1603 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>"); 1604 MODULE_FIRMWARE(WL1251_FW_NAME); 1605 MODULE_FIRMWARE(WL1251_NVS_NAME); 1606