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 struct cfg80211_scan_info info = { 452 .aborted = true, 453 }; 454 455 ieee80211_scan_completed(wl->hw, &info); 456 wl->scanning = false; 457 } 458 459 wl->state = WL1251_STATE_OFF; 460 461 wl1251_disable_interrupts(wl); 462 463 mutex_unlock(&wl->mutex); 464 465 cancel_work_sync(&wl->irq_work); 466 cancel_work_sync(&wl->tx_work); 467 cancel_delayed_work_sync(&wl->elp_work); 468 469 mutex_lock(&wl->mutex); 470 471 /* let's notify MAC80211 about the remaining pending TX frames */ 472 wl1251_tx_flush(wl); 473 wl1251_power_off(wl); 474 475 eth_zero_addr(wl->bssid); 476 wl->listen_int = 1; 477 wl->bss_type = MAX_BSS_TYPE; 478 479 wl->data_in_count = 0; 480 wl->rx_counter = 0; 481 wl->rx_handled = 0; 482 wl->rx_current_buffer = 0; 483 wl->rx_last_id = 0; 484 wl->next_tx_complete = 0; 485 wl->elp = false; 486 wl->station_mode = STATION_ACTIVE_MODE; 487 wl->psm_entry_retry = 0; 488 wl->tx_queue_stopped = false; 489 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 490 wl->rssi_thold = 0; 491 wl->channel = WL1251_DEFAULT_CHANNEL; 492 wl->monitor_present = false; 493 wl->joined = false; 494 495 wl1251_debugfs_reset(wl); 496 497 mutex_unlock(&wl->mutex); 498 } 499 500 static int wl1251_op_add_interface(struct ieee80211_hw *hw, 501 struct ieee80211_vif *vif) 502 { 503 struct wl1251 *wl = hw->priv; 504 int ret = 0; 505 506 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 507 IEEE80211_VIF_SUPPORTS_UAPSD | 508 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 509 510 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM", 511 vif->type, vif->addr); 512 513 mutex_lock(&wl->mutex); 514 if (wl->vif) { 515 ret = -EBUSY; 516 goto out; 517 } 518 519 wl->vif = vif; 520 521 switch (vif->type) { 522 case NL80211_IFTYPE_STATION: 523 wl->bss_type = BSS_TYPE_STA_BSS; 524 break; 525 case NL80211_IFTYPE_ADHOC: 526 wl->bss_type = BSS_TYPE_IBSS; 527 break; 528 default: 529 ret = -EOPNOTSUPP; 530 goto out; 531 } 532 533 if (!ether_addr_equal_unaligned(wl->mac_addr, vif->addr)) { 534 memcpy(wl->mac_addr, vif->addr, ETH_ALEN); 535 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 536 ret = wl1251_acx_station_id(wl); 537 if (ret < 0) 538 goto out; 539 } 540 541 out: 542 mutex_unlock(&wl->mutex); 543 return ret; 544 } 545 546 static void wl1251_op_remove_interface(struct ieee80211_hw *hw, 547 struct ieee80211_vif *vif) 548 { 549 struct wl1251 *wl = hw->priv; 550 551 mutex_lock(&wl->mutex); 552 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface"); 553 wl->vif = NULL; 554 eth_zero_addr(wl->bssid); 555 mutex_unlock(&wl->mutex); 556 } 557 558 static int wl1251_build_null_data(struct wl1251 *wl) 559 { 560 struct sk_buff *skb = NULL; 561 int size; 562 void *ptr; 563 int ret = -ENOMEM; 564 565 if (wl->bss_type == BSS_TYPE_IBSS) { 566 size = sizeof(struct wl12xx_null_data_template); 567 ptr = NULL; 568 } else { 569 skb = ieee80211_nullfunc_get(wl->hw, wl->vif, false); 570 if (!skb) 571 goto out; 572 size = skb->len; 573 ptr = skb->data; 574 } 575 576 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA, ptr, size); 577 578 out: 579 dev_kfree_skb(skb); 580 if (ret) 581 wl1251_warning("cmd buld null data failed: %d", ret); 582 583 return ret; 584 } 585 586 static int wl1251_build_qos_null_data(struct wl1251 *wl) 587 { 588 struct ieee80211_qos_hdr template; 589 590 memset(&template, 0, sizeof(template)); 591 592 memcpy(template.addr1, wl->bssid, ETH_ALEN); 593 memcpy(template.addr2, wl->mac_addr, ETH_ALEN); 594 memcpy(template.addr3, wl->bssid, ETH_ALEN); 595 596 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | 597 IEEE80211_STYPE_QOS_NULLFUNC | 598 IEEE80211_FCTL_TODS); 599 600 /* FIXME: not sure what priority to use here */ 601 template.qos_ctrl = cpu_to_le16(0); 602 603 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template, 604 sizeof(template)); 605 } 606 607 static bool wl1251_can_do_pm(struct ieee80211_conf *conf, struct wl1251 *wl) 608 { 609 return (conf->flags & IEEE80211_CONF_PS) && !wl->monitor_present; 610 } 611 612 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed) 613 { 614 struct wl1251 *wl = hw->priv; 615 struct ieee80211_conf *conf = &hw->conf; 616 int channel, ret = 0; 617 618 channel = ieee80211_frequency_to_channel( 619 conf->chandef.chan->center_freq); 620 621 wl1251_debug(DEBUG_MAC80211, 622 "mac80211 config ch %d monitor %s psm %s power %d", 623 channel, 624 conf->flags & IEEE80211_CONF_MONITOR ? "on" : "off", 625 conf->flags & IEEE80211_CONF_PS ? "on" : "off", 626 conf->power_level); 627 628 mutex_lock(&wl->mutex); 629 630 ret = wl1251_ps_elp_wakeup(wl); 631 if (ret < 0) 632 goto out; 633 634 if (changed & IEEE80211_CONF_CHANGE_MONITOR) { 635 u32 mode; 636 637 if (conf->flags & IEEE80211_CONF_MONITOR) { 638 wl->monitor_present = true; 639 mode = DF_SNIFF_MODE_ENABLE | DF_ENCRYPTION_DISABLE; 640 } else { 641 wl->monitor_present = false; 642 mode = 0; 643 } 644 645 ret = wl1251_acx_feature_cfg(wl, mode); 646 if (ret < 0) 647 goto out_sleep; 648 } 649 650 if (channel != wl->channel) { 651 wl->channel = channel; 652 653 /* 654 * Use ENABLE_RX command for channel switching when no 655 * interface is present (monitor mode only). 656 * This leaves the tx path disabled in firmware, whereas 657 * the usual JOIN command seems to transmit some frames 658 * at firmware level. 659 */ 660 if (wl->vif == NULL) { 661 wl->joined = false; 662 ret = wl1251_cmd_data_path_rx(wl, wl->channel, 1); 663 } else { 664 ret = wl1251_join(wl, wl->bss_type, wl->channel, 665 wl->beacon_int, wl->dtim_period); 666 } 667 if (ret < 0) 668 goto out_sleep; 669 } 670 671 if (wl1251_can_do_pm(conf, wl) && !wl->psm_requested) { 672 wl1251_debug(DEBUG_PSM, "psm enabled"); 673 674 wl->psm_requested = true; 675 676 wl->dtim_period = conf->ps_dtim_period; 677 678 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int, 679 wl->dtim_period); 680 681 /* 682 * mac80211 enables PSM only if we're already associated. 683 */ 684 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE); 685 if (ret < 0) 686 goto out_sleep; 687 } else if (!wl1251_can_do_pm(conf, wl) && wl->psm_requested) { 688 wl1251_debug(DEBUG_PSM, "psm disabled"); 689 690 wl->psm_requested = false; 691 692 if (wl->station_mode != STATION_ACTIVE_MODE) { 693 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 694 if (ret < 0) 695 goto out_sleep; 696 } 697 } 698 699 if (changed & IEEE80211_CONF_CHANGE_IDLE && !wl->scanning) { 700 if (conf->flags & IEEE80211_CONF_IDLE) { 701 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 702 if (ret < 0) 703 goto out_sleep; 704 } else { 705 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 706 if (ret < 0) 707 goto out_sleep; 708 ret = wl1251_join(wl, wl->bss_type, wl->channel, 709 wl->beacon_int, wl->dtim_period); 710 if (ret < 0) 711 goto out_sleep; 712 } 713 } 714 715 if (conf->power_level != wl->power_level) { 716 ret = wl1251_acx_tx_power(wl, conf->power_level); 717 if (ret < 0) 718 goto out_sleep; 719 720 wl->power_level = conf->power_level; 721 } 722 723 out_sleep: 724 wl1251_ps_elp_sleep(wl); 725 726 out: 727 mutex_unlock(&wl->mutex); 728 729 return ret; 730 } 731 732 struct wl1251_filter_params { 733 bool enabled; 734 int mc_list_length; 735 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN]; 736 }; 737 738 static u64 wl1251_op_prepare_multicast(struct ieee80211_hw *hw, 739 struct netdev_hw_addr_list *mc_list) 740 { 741 struct wl1251_filter_params *fp; 742 struct netdev_hw_addr *ha; 743 struct wl1251 *wl = hw->priv; 744 745 if (unlikely(wl->state == WL1251_STATE_OFF)) 746 return 0; 747 748 fp = kzalloc(sizeof(*fp), GFP_ATOMIC); 749 if (!fp) { 750 wl1251_error("Out of memory setting filters."); 751 return 0; 752 } 753 754 /* update multicast filtering parameters */ 755 fp->mc_list_length = 0; 756 if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) { 757 fp->enabled = false; 758 } else { 759 fp->enabled = true; 760 netdev_hw_addr_list_for_each(ha, mc_list) { 761 memcpy(fp->mc_list[fp->mc_list_length], 762 ha->addr, ETH_ALEN); 763 fp->mc_list_length++; 764 } 765 } 766 767 return (u64)(unsigned long)fp; 768 } 769 770 #define WL1251_SUPPORTED_FILTERS (FIF_ALLMULTI | \ 771 FIF_FCSFAIL | \ 772 FIF_BCN_PRBRESP_PROMISC | \ 773 FIF_CONTROL | \ 774 FIF_OTHER_BSS | \ 775 FIF_PROBE_REQ) 776 777 static void wl1251_op_configure_filter(struct ieee80211_hw *hw, 778 unsigned int changed, 779 unsigned int *total, u64 multicast) 780 { 781 struct wl1251_filter_params *fp = (void *)(unsigned long)multicast; 782 struct wl1251 *wl = hw->priv; 783 int ret; 784 785 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter"); 786 787 *total &= WL1251_SUPPORTED_FILTERS; 788 changed &= WL1251_SUPPORTED_FILTERS; 789 790 if (changed == 0) { 791 /* no filters which we support changed */ 792 kfree(fp); 793 return; 794 } 795 796 mutex_lock(&wl->mutex); 797 798 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 799 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 800 801 if (*total & FIF_ALLMULTI) 802 /* 803 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive 804 * all multicast frames 805 */ 806 wl->rx_config &= ~CFG_MC_FILTER_EN; 807 if (*total & FIF_FCSFAIL) 808 wl->rx_filter |= CFG_RX_FCS_ERROR; 809 if (*total & FIF_BCN_PRBRESP_PROMISC) { 810 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 811 wl->rx_config &= ~CFG_SSID_FILTER_EN; 812 } 813 if (*total & FIF_CONTROL) 814 wl->rx_filter |= CFG_RX_CTL_EN; 815 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid)) 816 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 817 if (*total & FIF_PROBE_REQ) 818 wl->rx_filter |= CFG_RX_PREQ_EN; 819 820 if (wl->state == WL1251_STATE_OFF) 821 goto out; 822 823 ret = wl1251_ps_elp_wakeup(wl); 824 if (ret < 0) 825 goto out; 826 827 if (*total & FIF_ALLMULTI) 828 ret = wl1251_acx_group_address_tbl(wl, false, NULL, 0); 829 else if (fp) 830 ret = wl1251_acx_group_address_tbl(wl, fp->enabled, 831 fp->mc_list, 832 fp->mc_list_length); 833 if (ret < 0) 834 goto out; 835 836 /* send filters to firmware */ 837 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter); 838 839 wl1251_ps_elp_sleep(wl); 840 841 out: 842 mutex_unlock(&wl->mutex); 843 kfree(fp); 844 } 845 846 /* HW encryption */ 847 static int wl1251_set_key_type(struct wl1251 *wl, 848 struct wl1251_cmd_set_keys *key, 849 enum set_key_cmd cmd, 850 struct ieee80211_key_conf *mac80211_key, 851 const u8 *addr) 852 { 853 switch (mac80211_key->cipher) { 854 case WLAN_CIPHER_SUITE_WEP40: 855 case WLAN_CIPHER_SUITE_WEP104: 856 if (is_broadcast_ether_addr(addr)) 857 key->key_type = KEY_WEP_DEFAULT; 858 else 859 key->key_type = KEY_WEP_ADDR; 860 861 mac80211_key->hw_key_idx = mac80211_key->keyidx; 862 break; 863 case WLAN_CIPHER_SUITE_TKIP: 864 if (is_broadcast_ether_addr(addr)) 865 key->key_type = KEY_TKIP_MIC_GROUP; 866 else 867 key->key_type = KEY_TKIP_MIC_PAIRWISE; 868 869 mac80211_key->hw_key_idx = mac80211_key->keyidx; 870 break; 871 case WLAN_CIPHER_SUITE_CCMP: 872 if (is_broadcast_ether_addr(addr)) 873 key->key_type = KEY_AES_GROUP; 874 else 875 key->key_type = KEY_AES_PAIRWISE; 876 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 877 break; 878 default: 879 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher); 880 return -EOPNOTSUPP; 881 } 882 883 return 0; 884 } 885 886 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 887 struct ieee80211_vif *vif, 888 struct ieee80211_sta *sta, 889 struct ieee80211_key_conf *key) 890 { 891 struct wl1251 *wl = hw->priv; 892 struct wl1251_cmd_set_keys *wl_cmd; 893 const u8 *addr; 894 int ret; 895 896 static const u8 bcast_addr[ETH_ALEN] = 897 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 898 899 wl1251_debug(DEBUG_MAC80211, "mac80211 set key"); 900 901 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL); 902 if (!wl_cmd) { 903 ret = -ENOMEM; 904 goto out; 905 } 906 907 addr = sta ? sta->addr : bcast_addr; 908 909 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd); 910 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN); 911 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x", 912 key->cipher, key->keyidx, key->keylen, key->flags); 913 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen); 914 915 if (is_zero_ether_addr(addr)) { 916 /* We dont support TX only encryption */ 917 ret = -EOPNOTSUPP; 918 goto out; 919 } 920 921 mutex_lock(&wl->mutex); 922 923 switch (cmd) { 924 case SET_KEY: 925 if (wl->monitor_present) { 926 ret = -EOPNOTSUPP; 927 goto out_unlock; 928 } 929 wl_cmd->key_action = KEY_ADD_OR_REPLACE; 930 break; 931 case DISABLE_KEY: 932 wl_cmd->key_action = KEY_REMOVE; 933 break; 934 default: 935 wl1251_error("Unsupported key cmd 0x%x", cmd); 936 break; 937 } 938 939 ret = wl1251_ps_elp_wakeup(wl); 940 if (ret < 0) 941 goto out_unlock; 942 943 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr); 944 if (ret < 0) { 945 wl1251_error("Set KEY type failed"); 946 goto out_sleep; 947 } 948 949 if (wl_cmd->key_type != KEY_WEP_DEFAULT) 950 memcpy(wl_cmd->addr, addr, ETH_ALEN); 951 952 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) || 953 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) { 954 /* 955 * We get the key in the following form: 956 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes) 957 * but the target is expecting: 958 * TKIP - RX MIC - TX MIC 959 */ 960 memcpy(wl_cmd->key, key->key, 16); 961 memcpy(wl_cmd->key + 16, key->key + 24, 8); 962 memcpy(wl_cmd->key + 24, key->key + 16, 8); 963 964 } else { 965 memcpy(wl_cmd->key, key->key, key->keylen); 966 } 967 wl_cmd->key_size = key->keylen; 968 969 wl_cmd->id = key->keyidx; 970 wl_cmd->ssid_profile = 0; 971 972 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd)); 973 974 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd)); 975 if (ret < 0) { 976 wl1251_warning("could not set keys"); 977 goto out_sleep; 978 } 979 980 out_sleep: 981 wl1251_ps_elp_sleep(wl); 982 983 out_unlock: 984 mutex_unlock(&wl->mutex); 985 986 out: 987 kfree(wl_cmd); 988 989 return ret; 990 } 991 992 static int wl1251_op_hw_scan(struct ieee80211_hw *hw, 993 struct ieee80211_vif *vif, 994 struct ieee80211_scan_request *hw_req) 995 { 996 struct cfg80211_scan_request *req = &hw_req->req; 997 struct wl1251 *wl = hw->priv; 998 struct sk_buff *skb; 999 size_t ssid_len = 0; 1000 u8 *ssid = NULL; 1001 int ret; 1002 1003 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan"); 1004 1005 if (req->n_ssids) { 1006 ssid = req->ssids[0].ssid; 1007 ssid_len = req->ssids[0].ssid_len; 1008 } 1009 1010 mutex_lock(&wl->mutex); 1011 1012 if (wl->scanning) { 1013 wl1251_debug(DEBUG_SCAN, "scan already in progress"); 1014 ret = -EINVAL; 1015 goto out; 1016 } 1017 1018 ret = wl1251_ps_elp_wakeup(wl); 1019 if (ret < 0) 1020 goto out; 1021 1022 if (hw->conf.flags & IEEE80211_CONF_IDLE) { 1023 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 1024 if (ret < 0) 1025 goto out_sleep; 1026 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1027 wl->beacon_int, wl->dtim_period); 1028 if (ret < 0) 1029 goto out_sleep; 1030 } 1031 1032 skb = ieee80211_probereq_get(wl->hw, wl->vif->addr, ssid, ssid_len, 1033 req->ie_len); 1034 if (!skb) { 1035 ret = -ENOMEM; 1036 goto out_idle; 1037 } 1038 if (req->ie_len) 1039 skb_put_data(skb, req->ie, req->ie_len); 1040 1041 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data, 1042 skb->len); 1043 dev_kfree_skb(skb); 1044 if (ret < 0) 1045 goto out_idle; 1046 1047 ret = wl1251_cmd_trigger_scan_to(wl, 0); 1048 if (ret < 0) 1049 goto out_idle; 1050 1051 wl->scanning = true; 1052 1053 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels, 1054 req->n_channels, WL1251_SCAN_NUM_PROBES); 1055 if (ret < 0) { 1056 wl1251_debug(DEBUG_SCAN, "scan failed %d", ret); 1057 wl->scanning = false; 1058 goto out_idle; 1059 } 1060 goto out_sleep; 1061 1062 out_idle: 1063 if (hw->conf.flags & IEEE80211_CONF_IDLE) 1064 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 1065 out_sleep: 1066 wl1251_ps_elp_sleep(wl); 1067 1068 out: 1069 mutex_unlock(&wl->mutex); 1070 1071 return ret; 1072 } 1073 1074 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 1075 { 1076 struct wl1251 *wl = hw->priv; 1077 int ret; 1078 1079 mutex_lock(&wl->mutex); 1080 1081 ret = wl1251_ps_elp_wakeup(wl); 1082 if (ret < 0) 1083 goto out; 1084 1085 ret = wl1251_acx_rts_threshold(wl, (u16) value); 1086 if (ret < 0) 1087 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret); 1088 1089 wl1251_ps_elp_sleep(wl); 1090 1091 out: 1092 mutex_unlock(&wl->mutex); 1093 1094 return ret; 1095 } 1096 1097 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw, 1098 struct ieee80211_vif *vif, 1099 struct ieee80211_bss_conf *bss_conf, 1100 u32 changed) 1101 { 1102 struct wl1251 *wl = hw->priv; 1103 struct sk_buff *beacon, *skb; 1104 bool enable; 1105 int ret; 1106 1107 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed"); 1108 1109 mutex_lock(&wl->mutex); 1110 1111 ret = wl1251_ps_elp_wakeup(wl); 1112 if (ret < 0) 1113 goto out; 1114 1115 if (changed & BSS_CHANGED_CQM) { 1116 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold, 1117 WL1251_DEFAULT_LOW_RSSI_WEIGHT, 1118 WL1251_DEFAULT_LOW_RSSI_DEPTH, 1119 WL1251_ACX_LOW_RSSI_TYPE_EDGE); 1120 if (ret < 0) 1121 goto out; 1122 wl->rssi_thold = bss_conf->cqm_rssi_thold; 1123 } 1124 1125 if ((changed & BSS_CHANGED_BSSID) && 1126 memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) { 1127 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN); 1128 1129 if (!is_zero_ether_addr(wl->bssid)) { 1130 ret = wl1251_build_null_data(wl); 1131 if (ret < 0) 1132 goto out_sleep; 1133 1134 ret = wl1251_build_qos_null_data(wl); 1135 if (ret < 0) 1136 goto out_sleep; 1137 1138 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1139 wl->beacon_int, wl->dtim_period); 1140 if (ret < 0) 1141 goto out_sleep; 1142 } 1143 } 1144 1145 if (changed & BSS_CHANGED_ASSOC) { 1146 if (bss_conf->assoc) { 1147 wl->beacon_int = bss_conf->beacon_int; 1148 1149 skb = ieee80211_pspoll_get(wl->hw, wl->vif); 1150 if (!skb) 1151 goto out_sleep; 1152 1153 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL, 1154 skb->data, 1155 skb->len); 1156 dev_kfree_skb(skb); 1157 if (ret < 0) 1158 goto out_sleep; 1159 1160 ret = wl1251_acx_aid(wl, bss_conf->aid); 1161 if (ret < 0) 1162 goto out_sleep; 1163 } else { 1164 /* use defaults when not associated */ 1165 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1166 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1167 } 1168 } 1169 if (changed & BSS_CHANGED_ERP_SLOT) { 1170 if (bss_conf->use_short_slot) 1171 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT); 1172 else 1173 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG); 1174 if (ret < 0) { 1175 wl1251_warning("Set slot time failed %d", ret); 1176 goto out_sleep; 1177 } 1178 } 1179 1180 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 1181 if (bss_conf->use_short_preamble) 1182 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT); 1183 else 1184 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG); 1185 } 1186 1187 if (changed & BSS_CHANGED_ERP_CTS_PROT) { 1188 if (bss_conf->use_cts_prot) 1189 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE); 1190 else 1191 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE); 1192 if (ret < 0) { 1193 wl1251_warning("Set ctsprotect failed %d", ret); 1194 goto out_sleep; 1195 } 1196 } 1197 1198 if (changed & BSS_CHANGED_ARP_FILTER) { 1199 __be32 addr = bss_conf->arp_addr_list[0]; 1200 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS); 1201 1202 enable = bss_conf->arp_addr_cnt == 1 && bss_conf->assoc; 1203 ret = wl1251_acx_arp_ip_filter(wl, enable, addr); 1204 if (ret < 0) 1205 goto out_sleep; 1206 } 1207 1208 if (changed & BSS_CHANGED_BEACON) { 1209 beacon = ieee80211_beacon_get(hw, vif); 1210 if (!beacon) 1211 goto out_sleep; 1212 1213 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data, 1214 beacon->len); 1215 1216 if (ret < 0) { 1217 dev_kfree_skb(beacon); 1218 goto out_sleep; 1219 } 1220 1221 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data, 1222 beacon->len); 1223 1224 dev_kfree_skb(beacon); 1225 1226 if (ret < 0) 1227 goto out_sleep; 1228 1229 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1230 wl->beacon_int, wl->dtim_period); 1231 1232 if (ret < 0) 1233 goto out_sleep; 1234 } 1235 1236 out_sleep: 1237 wl1251_ps_elp_sleep(wl); 1238 1239 out: 1240 mutex_unlock(&wl->mutex); 1241 } 1242 1243 1244 /* can't be const, mac80211 writes to this */ 1245 static struct ieee80211_rate wl1251_rates[] = { 1246 { .bitrate = 10, 1247 .hw_value = 0x1, 1248 .hw_value_short = 0x1, }, 1249 { .bitrate = 20, 1250 .hw_value = 0x2, 1251 .hw_value_short = 0x2, 1252 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1253 { .bitrate = 55, 1254 .hw_value = 0x4, 1255 .hw_value_short = 0x4, 1256 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1257 { .bitrate = 110, 1258 .hw_value = 0x20, 1259 .hw_value_short = 0x20, 1260 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1261 { .bitrate = 60, 1262 .hw_value = 0x8, 1263 .hw_value_short = 0x8, }, 1264 { .bitrate = 90, 1265 .hw_value = 0x10, 1266 .hw_value_short = 0x10, }, 1267 { .bitrate = 120, 1268 .hw_value = 0x40, 1269 .hw_value_short = 0x40, }, 1270 { .bitrate = 180, 1271 .hw_value = 0x80, 1272 .hw_value_short = 0x80, }, 1273 { .bitrate = 240, 1274 .hw_value = 0x200, 1275 .hw_value_short = 0x200, }, 1276 { .bitrate = 360, 1277 .hw_value = 0x400, 1278 .hw_value_short = 0x400, }, 1279 { .bitrate = 480, 1280 .hw_value = 0x800, 1281 .hw_value_short = 0x800, }, 1282 { .bitrate = 540, 1283 .hw_value = 0x1000, 1284 .hw_value_short = 0x1000, }, 1285 }; 1286 1287 /* can't be const, mac80211 writes to this */ 1288 static struct ieee80211_channel wl1251_channels[] = { 1289 { .hw_value = 1, .center_freq = 2412}, 1290 { .hw_value = 2, .center_freq = 2417}, 1291 { .hw_value = 3, .center_freq = 2422}, 1292 { .hw_value = 4, .center_freq = 2427}, 1293 { .hw_value = 5, .center_freq = 2432}, 1294 { .hw_value = 6, .center_freq = 2437}, 1295 { .hw_value = 7, .center_freq = 2442}, 1296 { .hw_value = 8, .center_freq = 2447}, 1297 { .hw_value = 9, .center_freq = 2452}, 1298 { .hw_value = 10, .center_freq = 2457}, 1299 { .hw_value = 11, .center_freq = 2462}, 1300 { .hw_value = 12, .center_freq = 2467}, 1301 { .hw_value = 13, .center_freq = 2472}, 1302 }; 1303 1304 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, 1305 struct ieee80211_vif *vif, u16 queue, 1306 const struct ieee80211_tx_queue_params *params) 1307 { 1308 enum wl1251_acx_ps_scheme ps_scheme; 1309 struct wl1251 *wl = hw->priv; 1310 int ret; 1311 1312 mutex_lock(&wl->mutex); 1313 1314 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue); 1315 1316 ret = wl1251_ps_elp_wakeup(wl); 1317 if (ret < 0) 1318 goto out; 1319 1320 /* mac80211 uses units of 32 usec */ 1321 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue), 1322 params->cw_min, params->cw_max, 1323 params->aifs, params->txop * 32); 1324 if (ret < 0) 1325 goto out_sleep; 1326 1327 if (params->uapsd) 1328 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER; 1329 else 1330 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY; 1331 1332 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue), 1333 CHANNEL_TYPE_EDCF, 1334 wl1251_tx_get_queue(queue), ps_scheme, 1335 WL1251_ACX_ACK_POLICY_LEGACY); 1336 if (ret < 0) 1337 goto out_sleep; 1338 1339 out_sleep: 1340 wl1251_ps_elp_sleep(wl); 1341 1342 out: 1343 mutex_unlock(&wl->mutex); 1344 1345 return ret; 1346 } 1347 1348 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx, 1349 struct survey_info *survey) 1350 { 1351 struct wl1251 *wl = hw->priv; 1352 struct ieee80211_conf *conf = &hw->conf; 1353 1354 if (idx != 0) 1355 return -ENOENT; 1356 1357 survey->channel = conf->chandef.chan; 1358 survey->filled = SURVEY_INFO_NOISE_DBM; 1359 survey->noise = wl->noise; 1360 1361 return 0; 1362 } 1363 1364 /* can't be const, mac80211 writes to this */ 1365 static struct ieee80211_supported_band wl1251_band_2ghz = { 1366 .channels = wl1251_channels, 1367 .n_channels = ARRAY_SIZE(wl1251_channels), 1368 .bitrates = wl1251_rates, 1369 .n_bitrates = ARRAY_SIZE(wl1251_rates), 1370 }; 1371 1372 static const struct ieee80211_ops wl1251_ops = { 1373 .start = wl1251_op_start, 1374 .stop = wl1251_op_stop, 1375 .add_interface = wl1251_op_add_interface, 1376 .remove_interface = wl1251_op_remove_interface, 1377 .config = wl1251_op_config, 1378 .prepare_multicast = wl1251_op_prepare_multicast, 1379 .configure_filter = wl1251_op_configure_filter, 1380 .tx = wl1251_op_tx, 1381 .set_key = wl1251_op_set_key, 1382 .hw_scan = wl1251_op_hw_scan, 1383 .bss_info_changed = wl1251_op_bss_info_changed, 1384 .set_rts_threshold = wl1251_op_set_rts_threshold, 1385 .conf_tx = wl1251_op_conf_tx, 1386 .get_survey = wl1251_op_get_survey, 1387 }; 1388 1389 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data) 1390 { 1391 unsigned long timeout; 1392 1393 wl1251_reg_write32(wl, EE_ADDR, offset); 1394 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ); 1395 1396 /* EE_CTL_READ clears when data is ready */ 1397 timeout = jiffies + msecs_to_jiffies(100); 1398 while (1) { 1399 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ)) 1400 break; 1401 1402 if (time_after(jiffies, timeout)) 1403 return -ETIMEDOUT; 1404 1405 msleep(1); 1406 } 1407 1408 *data = wl1251_reg_read32(wl, EE_DATA); 1409 return 0; 1410 } 1411 1412 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset, 1413 u8 *data, size_t len) 1414 { 1415 size_t i; 1416 int ret; 1417 1418 wl1251_reg_write32(wl, EE_START, 0); 1419 1420 for (i = 0; i < len; i++) { 1421 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]); 1422 if (ret < 0) 1423 return ret; 1424 } 1425 1426 return 0; 1427 } 1428 1429 static int wl1251_read_eeprom_mac(struct wl1251 *wl) 1430 { 1431 u8 mac[ETH_ALEN]; 1432 int i, ret; 1433 1434 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE); 1435 1436 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac)); 1437 if (ret < 0) { 1438 wl1251_warning("failed to read MAC address from EEPROM"); 1439 return ret; 1440 } 1441 1442 /* MAC is stored in reverse order */ 1443 for (i = 0; i < ETH_ALEN; i++) 1444 wl->mac_addr[i] = mac[ETH_ALEN - i - 1]; 1445 1446 return 0; 1447 } 1448 1449 static int wl1251_register_hw(struct wl1251 *wl) 1450 { 1451 int ret; 1452 1453 if (wl->mac80211_registered) 1454 return 0; 1455 1456 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 1457 1458 ret = ieee80211_register_hw(wl->hw); 1459 if (ret < 0) { 1460 wl1251_error("unable to register mac80211 hw: %d", ret); 1461 return ret; 1462 } 1463 1464 wl->mac80211_registered = true; 1465 1466 wl1251_notice("loaded"); 1467 1468 return 0; 1469 } 1470 1471 int wl1251_init_ieee80211(struct wl1251 *wl) 1472 { 1473 int ret; 1474 1475 /* The tx descriptor buffer and the TKIP space */ 1476 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc) 1477 + WL1251_TKIP_IV_SPACE; 1478 1479 /* unit us */ 1480 /* FIXME: find a proper value */ 1481 1482 ieee80211_hw_set(wl->hw, SIGNAL_DBM); 1483 ieee80211_hw_set(wl->hw, SUPPORTS_PS); 1484 1485 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1486 BIT(NL80211_IFTYPE_ADHOC); 1487 wl->hw->wiphy->max_scan_ssids = 1; 1488 wl->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wl1251_band_2ghz; 1489 1490 wl->hw->queues = 4; 1491 1492 if (wl->use_eeprom) 1493 wl1251_read_eeprom_mac(wl); 1494 1495 ret = wl1251_register_hw(wl); 1496 if (ret) 1497 goto out; 1498 1499 wl1251_debugfs_init(wl); 1500 wl1251_notice("initialized"); 1501 1502 ret = 0; 1503 1504 out: 1505 return ret; 1506 } 1507 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211); 1508 1509 struct ieee80211_hw *wl1251_alloc_hw(void) 1510 { 1511 struct ieee80211_hw *hw; 1512 struct wl1251 *wl; 1513 int i; 1514 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf}; 1515 1516 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops); 1517 if (!hw) { 1518 wl1251_error("could not alloc ieee80211_hw"); 1519 return ERR_PTR(-ENOMEM); 1520 } 1521 1522 wl = hw->priv; 1523 memset(wl, 0, sizeof(*wl)); 1524 1525 wl->hw = hw; 1526 1527 wl->data_in_count = 0; 1528 1529 skb_queue_head_init(&wl->tx_queue); 1530 1531 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work); 1532 wl->channel = WL1251_DEFAULT_CHANNEL; 1533 wl->monitor_present = false; 1534 wl->joined = false; 1535 wl->scanning = false; 1536 wl->bss_type = MAX_BSS_TYPE; 1537 wl->default_key = 0; 1538 wl->listen_int = 1; 1539 wl->rx_counter = 0; 1540 wl->rx_handled = 0; 1541 wl->rx_current_buffer = 0; 1542 wl->rx_last_id = 0; 1543 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 1544 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 1545 wl->elp = false; 1546 wl->station_mode = STATION_ACTIVE_MODE; 1547 wl->psm_requested = false; 1548 wl->psm_entry_retry = 0; 1549 wl->tx_queue_stopped = false; 1550 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 1551 wl->rssi_thold = 0; 1552 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1553 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1554 wl->vif = NULL; 1555 1556 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) 1557 wl->tx_frames[i] = NULL; 1558 1559 wl->next_tx_complete = 0; 1560 1561 INIT_WORK(&wl->irq_work, wl1251_irq_work); 1562 INIT_WORK(&wl->tx_work, wl1251_tx_work); 1563 1564 /* 1565 * In case our MAC address is not correctly set, 1566 * we use a random but Nokia MAC. 1567 */ 1568 memcpy(wl->mac_addr, nokia_oui, 3); 1569 get_random_bytes(wl->mac_addr + 3, 3); 1570 1571 wl->state = WL1251_STATE_OFF; 1572 mutex_init(&wl->mutex); 1573 spin_lock_init(&wl->wl_lock); 1574 1575 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE; 1576 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE; 1577 1578 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL); 1579 if (!wl->rx_descriptor) { 1580 wl1251_error("could not allocate memory for rx descriptor"); 1581 ieee80211_free_hw(hw); 1582 return ERR_PTR(-ENOMEM); 1583 } 1584 1585 return hw; 1586 } 1587 EXPORT_SYMBOL_GPL(wl1251_alloc_hw); 1588 1589 int wl1251_free_hw(struct wl1251 *wl) 1590 { 1591 ieee80211_unregister_hw(wl->hw); 1592 1593 wl1251_debugfs_exit(wl); 1594 1595 kfree(wl->target_mem_map); 1596 kfree(wl->data_path); 1597 vfree(wl->fw); 1598 wl->fw = NULL; 1599 kfree(wl->nvs); 1600 wl->nvs = NULL; 1601 1602 kfree(wl->rx_descriptor); 1603 wl->rx_descriptor = NULL; 1604 1605 ieee80211_free_hw(wl->hw); 1606 1607 return 0; 1608 } 1609 EXPORT_SYMBOL_GPL(wl1251_free_hw); 1610 1611 MODULE_DESCRIPTION("TI wl1251 Wireless LAN Driver Core"); 1612 MODULE_LICENSE("GPL"); 1613 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>"); 1614 MODULE_FIRMWARE(WL1251_FW_NAME); 1615 MODULE_FIRMWARE(WL1251_NVS_NAME); 1616