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 = kmemdup(fw->data, fw->size, 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 wl->nvs_len = fw->size; 134 135 ret = 0; 136 137 out: 138 release_firmware(fw); 139 140 return ret; 141 } 142 143 static void wl1251_fw_wakeup(struct wl1251 *wl) 144 { 145 u32 elp_reg; 146 147 elp_reg = ELPCTRL_WAKE_UP; 148 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg); 149 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR); 150 151 if (!(elp_reg & ELPCTRL_WLAN_READY)) 152 wl1251_warning("WLAN not ready"); 153 } 154 155 static int wl1251_chip_wakeup(struct wl1251 *wl) 156 { 157 int ret; 158 159 ret = wl1251_power_on(wl); 160 if (ret < 0) 161 return ret; 162 163 msleep(WL1251_POWER_ON_SLEEP); 164 wl->if_ops->reset(wl); 165 166 /* We don't need a real memory partition here, because we only want 167 * to use the registers at this point. */ 168 wl1251_set_partition(wl, 169 0x00000000, 170 0x00000000, 171 REGISTERS_BASE, 172 REGISTERS_DOWN_SIZE); 173 174 /* ELP module wake up */ 175 wl1251_fw_wakeup(wl); 176 177 /* whal_FwCtrl_BootSm() */ 178 179 /* 0. read chip id from CHIP_ID */ 180 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B); 181 182 /* 1. check if chip id is valid */ 183 184 switch (wl->chip_id) { 185 case CHIP_ID_1251_PG12: 186 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)", 187 wl->chip_id); 188 break; 189 case CHIP_ID_1251_PG11: 190 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)", 191 wl->chip_id); 192 break; 193 case CHIP_ID_1251_PG10: 194 default: 195 wl1251_error("unsupported chip id: 0x%x", wl->chip_id); 196 ret = -ENODEV; 197 goto out; 198 } 199 200 if (wl->fw == NULL) { 201 ret = wl1251_fetch_firmware(wl); 202 if (ret < 0) 203 goto out; 204 } 205 206 out: 207 return ret; 208 } 209 210 #define WL1251_IRQ_LOOP_COUNT 10 211 static void wl1251_irq_work(struct work_struct *work) 212 { 213 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT; 214 struct wl1251 *wl = 215 container_of(work, struct wl1251, irq_work); 216 int ret; 217 218 mutex_lock(&wl->mutex); 219 220 wl1251_debug(DEBUG_IRQ, "IRQ work"); 221 222 if (wl->state == WL1251_STATE_OFF) 223 goto out; 224 225 ret = wl1251_ps_elp_wakeup(wl); 226 if (ret < 0) 227 goto out; 228 229 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL); 230 231 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); 232 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr); 233 234 do { 235 if (wl->data_path) { 236 wl->rx_counter = wl1251_mem_read32( 237 wl, wl->data_path->rx_control_addr); 238 239 /* We handle a frmware bug here */ 240 switch ((wl->rx_counter - wl->rx_handled) & 0xf) { 241 case 0: 242 wl1251_debug(DEBUG_IRQ, 243 "RX: FW and host in sync"); 244 intr &= ~WL1251_ACX_INTR_RX0_DATA; 245 intr &= ~WL1251_ACX_INTR_RX1_DATA; 246 break; 247 case 1: 248 wl1251_debug(DEBUG_IRQ, "RX: FW +1"); 249 intr |= WL1251_ACX_INTR_RX0_DATA; 250 intr &= ~WL1251_ACX_INTR_RX1_DATA; 251 break; 252 case 2: 253 wl1251_debug(DEBUG_IRQ, "RX: FW +2"); 254 intr |= WL1251_ACX_INTR_RX0_DATA; 255 intr |= WL1251_ACX_INTR_RX1_DATA; 256 break; 257 default: 258 wl1251_warning( 259 "RX: FW and host out of sync: %d", 260 wl->rx_counter - wl->rx_handled); 261 break; 262 } 263 264 wl->rx_handled = wl->rx_counter; 265 266 wl1251_debug(DEBUG_IRQ, "RX counter: %d", 267 wl->rx_counter); 268 } 269 270 intr &= wl->intr_mask; 271 272 if (intr == 0) { 273 wl1251_debug(DEBUG_IRQ, "INTR is 0"); 274 goto out_sleep; 275 } 276 277 if (intr & WL1251_ACX_INTR_RX0_DATA) { 278 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA"); 279 wl1251_rx(wl); 280 } 281 282 if (intr & WL1251_ACX_INTR_RX1_DATA) { 283 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA"); 284 wl1251_rx(wl); 285 } 286 287 if (intr & WL1251_ACX_INTR_TX_RESULT) { 288 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT"); 289 wl1251_tx_complete(wl); 290 } 291 292 if (intr & WL1251_ACX_INTR_EVENT_A) { 293 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A"); 294 wl1251_event_handle(wl, 0); 295 } 296 297 if (intr & WL1251_ACX_INTR_EVENT_B) { 298 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B"); 299 wl1251_event_handle(wl, 1); 300 } 301 302 if (intr & WL1251_ACX_INTR_INIT_COMPLETE) 303 wl1251_debug(DEBUG_IRQ, 304 "WL1251_ACX_INTR_INIT_COMPLETE"); 305 306 if (--ctr == 0) 307 break; 308 309 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); 310 } while (intr); 311 312 out_sleep: 313 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask)); 314 wl1251_ps_elp_sleep(wl); 315 316 out: 317 mutex_unlock(&wl->mutex); 318 } 319 320 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel, 321 u16 beacon_interval, u8 dtim_period) 322 { 323 int ret; 324 325 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE, 326 DEFAULT_HW_GEN_MODULATION_TYPE, 327 wl->tx_mgmt_frm_rate, 328 wl->tx_mgmt_frm_mod); 329 if (ret < 0) 330 goto out; 331 332 /* 333 * Join command applies filters, and if we are not associated, 334 * BSSID filter must be disabled for association to work. 335 */ 336 if (is_zero_ether_addr(wl->bssid)) 337 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 338 339 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval, 340 dtim_period); 341 if (ret < 0) 342 goto out; 343 344 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100); 345 if (ret < 0) 346 wl1251_warning("join timeout"); 347 348 out: 349 return ret; 350 } 351 352 static void wl1251_op_tx(struct ieee80211_hw *hw, 353 struct ieee80211_tx_control *control, 354 struct sk_buff *skb) 355 { 356 struct wl1251 *wl = hw->priv; 357 unsigned long flags; 358 359 skb_queue_tail(&wl->tx_queue, skb); 360 361 /* 362 * The chip specific setup must run before the first TX packet - 363 * before that, the tx_work will not be initialized! 364 */ 365 366 ieee80211_queue_work(wl->hw, &wl->tx_work); 367 368 /* 369 * The workqueue is slow to process the tx_queue and we need stop 370 * the queue here, otherwise the queue will get too long. 371 */ 372 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) { 373 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues"); 374 375 spin_lock_irqsave(&wl->wl_lock, flags); 376 ieee80211_stop_queues(wl->hw); 377 wl->tx_queue_stopped = true; 378 spin_unlock_irqrestore(&wl->wl_lock, flags); 379 } 380 } 381 382 static int wl1251_op_start(struct ieee80211_hw *hw) 383 { 384 struct wl1251 *wl = hw->priv; 385 struct wiphy *wiphy = hw->wiphy; 386 int ret = 0; 387 388 wl1251_debug(DEBUG_MAC80211, "mac80211 start"); 389 390 mutex_lock(&wl->mutex); 391 392 if (wl->state != WL1251_STATE_OFF) { 393 wl1251_error("cannot start because not in off state: %d", 394 wl->state); 395 ret = -EBUSY; 396 goto out; 397 } 398 399 ret = wl1251_chip_wakeup(wl); 400 if (ret < 0) 401 goto out; 402 403 ret = wl1251_boot(wl); 404 if (ret < 0) 405 goto out; 406 407 ret = wl1251_hw_init(wl); 408 if (ret < 0) 409 goto out; 410 411 ret = wl1251_acx_station_id(wl); 412 if (ret < 0) 413 goto out; 414 415 wl->state = WL1251_STATE_ON; 416 417 wl1251_info("firmware booted (%s)", wl->fw_ver); 418 419 /* update hw/fw version info in wiphy struct */ 420 wiphy->hw_version = wl->chip_id; 421 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version)); 422 423 out: 424 if (ret < 0) 425 wl1251_power_off(wl); 426 427 mutex_unlock(&wl->mutex); 428 429 return ret; 430 } 431 432 static void wl1251_op_stop(struct ieee80211_hw *hw) 433 { 434 struct wl1251 *wl = hw->priv; 435 436 wl1251_info("down"); 437 438 wl1251_debug(DEBUG_MAC80211, "mac80211 stop"); 439 440 mutex_lock(&wl->mutex); 441 442 WARN_ON(wl->state != WL1251_STATE_ON); 443 444 if (wl->scanning) { 445 struct cfg80211_scan_info info = { 446 .aborted = true, 447 }; 448 449 ieee80211_scan_completed(wl->hw, &info); 450 wl->scanning = false; 451 } 452 453 wl->state = WL1251_STATE_OFF; 454 455 wl1251_disable_interrupts(wl); 456 457 mutex_unlock(&wl->mutex); 458 459 cancel_work_sync(&wl->irq_work); 460 cancel_work_sync(&wl->tx_work); 461 cancel_delayed_work_sync(&wl->elp_work); 462 463 mutex_lock(&wl->mutex); 464 465 /* let's notify MAC80211 about the remaining pending TX frames */ 466 wl1251_tx_flush(wl); 467 wl1251_power_off(wl); 468 469 eth_zero_addr(wl->bssid); 470 wl->listen_int = 1; 471 wl->bss_type = MAX_BSS_TYPE; 472 473 wl->data_in_count = 0; 474 wl->rx_counter = 0; 475 wl->rx_handled = 0; 476 wl->rx_current_buffer = 0; 477 wl->rx_last_id = 0; 478 wl->next_tx_complete = 0; 479 wl->elp = false; 480 wl->station_mode = STATION_ACTIVE_MODE; 481 wl->psm_entry_retry = 0; 482 wl->tx_queue_stopped = false; 483 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 484 wl->rssi_thold = 0; 485 wl->channel = WL1251_DEFAULT_CHANNEL; 486 wl->monitor_present = false; 487 wl->joined = false; 488 489 wl1251_debugfs_reset(wl); 490 491 mutex_unlock(&wl->mutex); 492 } 493 494 static int wl1251_op_add_interface(struct ieee80211_hw *hw, 495 struct ieee80211_vif *vif) 496 { 497 struct wl1251 *wl = hw->priv; 498 int ret = 0; 499 500 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 501 IEEE80211_VIF_SUPPORTS_UAPSD | 502 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 503 504 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM", 505 vif->type, vif->addr); 506 507 mutex_lock(&wl->mutex); 508 if (wl->vif) { 509 ret = -EBUSY; 510 goto out; 511 } 512 513 wl->vif = vif; 514 515 switch (vif->type) { 516 case NL80211_IFTYPE_STATION: 517 wl->bss_type = BSS_TYPE_STA_BSS; 518 break; 519 case NL80211_IFTYPE_ADHOC: 520 wl->bss_type = BSS_TYPE_IBSS; 521 break; 522 default: 523 ret = -EOPNOTSUPP; 524 goto out; 525 } 526 527 if (!ether_addr_equal_unaligned(wl->mac_addr, vif->addr)) { 528 memcpy(wl->mac_addr, vif->addr, ETH_ALEN); 529 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 530 ret = wl1251_acx_station_id(wl); 531 if (ret < 0) 532 goto out; 533 } 534 535 out: 536 mutex_unlock(&wl->mutex); 537 return ret; 538 } 539 540 static void wl1251_op_remove_interface(struct ieee80211_hw *hw, 541 struct ieee80211_vif *vif) 542 { 543 struct wl1251 *wl = hw->priv; 544 545 mutex_lock(&wl->mutex); 546 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface"); 547 wl->vif = NULL; 548 eth_zero_addr(wl->bssid); 549 mutex_unlock(&wl->mutex); 550 } 551 552 static int wl1251_build_null_data(struct wl1251 *wl) 553 { 554 struct sk_buff *skb = NULL; 555 int size; 556 void *ptr; 557 int ret = -ENOMEM; 558 559 if (wl->bss_type == BSS_TYPE_IBSS) { 560 size = sizeof(struct wl12xx_null_data_template); 561 ptr = NULL; 562 } else { 563 skb = ieee80211_nullfunc_get(wl->hw, wl->vif, false); 564 if (!skb) 565 goto out; 566 size = skb->len; 567 ptr = skb->data; 568 } 569 570 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA, ptr, size); 571 572 out: 573 dev_kfree_skb(skb); 574 if (ret) 575 wl1251_warning("cmd buld null data failed: %d", ret); 576 577 return ret; 578 } 579 580 static int wl1251_build_qos_null_data(struct wl1251 *wl) 581 { 582 struct ieee80211_qos_hdr template; 583 584 memset(&template, 0, sizeof(template)); 585 586 memcpy(template.addr1, wl->bssid, ETH_ALEN); 587 memcpy(template.addr2, wl->mac_addr, ETH_ALEN); 588 memcpy(template.addr3, wl->bssid, ETH_ALEN); 589 590 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | 591 IEEE80211_STYPE_QOS_NULLFUNC | 592 IEEE80211_FCTL_TODS); 593 594 /* FIXME: not sure what priority to use here */ 595 template.qos_ctrl = cpu_to_le16(0); 596 597 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template, 598 sizeof(template)); 599 } 600 601 static bool wl1251_can_do_pm(struct ieee80211_conf *conf, struct wl1251 *wl) 602 { 603 return (conf->flags & IEEE80211_CONF_PS) && !wl->monitor_present; 604 } 605 606 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed) 607 { 608 struct wl1251 *wl = hw->priv; 609 struct ieee80211_conf *conf = &hw->conf; 610 int channel, ret = 0; 611 612 channel = ieee80211_frequency_to_channel( 613 conf->chandef.chan->center_freq); 614 615 wl1251_debug(DEBUG_MAC80211, 616 "mac80211 config ch %d monitor %s psm %s power %d", 617 channel, 618 conf->flags & IEEE80211_CONF_MONITOR ? "on" : "off", 619 conf->flags & IEEE80211_CONF_PS ? "on" : "off", 620 conf->power_level); 621 622 mutex_lock(&wl->mutex); 623 624 ret = wl1251_ps_elp_wakeup(wl); 625 if (ret < 0) 626 goto out; 627 628 if (changed & IEEE80211_CONF_CHANGE_MONITOR) { 629 u32 mode; 630 631 if (conf->flags & IEEE80211_CONF_MONITOR) { 632 wl->monitor_present = true; 633 mode = DF_SNIFF_MODE_ENABLE | DF_ENCRYPTION_DISABLE; 634 } else { 635 wl->monitor_present = false; 636 mode = 0; 637 } 638 639 ret = wl1251_acx_feature_cfg(wl, mode); 640 if (ret < 0) 641 goto out_sleep; 642 } 643 644 if (channel != wl->channel) { 645 wl->channel = channel; 646 647 /* 648 * Use ENABLE_RX command for channel switching when no 649 * interface is present (monitor mode only). 650 * This leaves the tx path disabled in firmware, whereas 651 * the usual JOIN command seems to transmit some frames 652 * at firmware level. 653 */ 654 if (wl->vif == NULL) { 655 wl->joined = false; 656 ret = wl1251_cmd_data_path_rx(wl, wl->channel, 1); 657 } else { 658 ret = wl1251_join(wl, wl->bss_type, wl->channel, 659 wl->beacon_int, wl->dtim_period); 660 } 661 if (ret < 0) 662 goto out_sleep; 663 } 664 665 if (wl1251_can_do_pm(conf, wl) && !wl->psm_requested) { 666 wl1251_debug(DEBUG_PSM, "psm enabled"); 667 668 wl->psm_requested = true; 669 670 wl->dtim_period = conf->ps_dtim_period; 671 672 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int, 673 wl->dtim_period); 674 675 /* 676 * mac80211 enables PSM only if we're already associated. 677 */ 678 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE); 679 if (ret < 0) 680 goto out_sleep; 681 } else if (!wl1251_can_do_pm(conf, wl) && wl->psm_requested) { 682 wl1251_debug(DEBUG_PSM, "psm disabled"); 683 684 wl->psm_requested = false; 685 686 if (wl->station_mode != STATION_ACTIVE_MODE) { 687 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 688 if (ret < 0) 689 goto out_sleep; 690 } 691 } 692 693 if (changed & IEEE80211_CONF_CHANGE_IDLE && !wl->scanning) { 694 if (conf->flags & IEEE80211_CONF_IDLE) { 695 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 696 if (ret < 0) 697 goto out_sleep; 698 } else { 699 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 700 if (ret < 0) 701 goto out_sleep; 702 ret = wl1251_join(wl, wl->bss_type, wl->channel, 703 wl->beacon_int, wl->dtim_period); 704 if (ret < 0) 705 goto out_sleep; 706 } 707 } 708 709 if (conf->power_level != wl->power_level) { 710 ret = wl1251_acx_tx_power(wl, conf->power_level); 711 if (ret < 0) 712 goto out_sleep; 713 714 wl->power_level = conf->power_level; 715 } 716 717 out_sleep: 718 wl1251_ps_elp_sleep(wl); 719 720 out: 721 mutex_unlock(&wl->mutex); 722 723 return ret; 724 } 725 726 struct wl1251_filter_params { 727 bool enabled; 728 int mc_list_length; 729 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN]; 730 }; 731 732 static u64 wl1251_op_prepare_multicast(struct ieee80211_hw *hw, 733 struct netdev_hw_addr_list *mc_list) 734 { 735 struct wl1251_filter_params *fp; 736 struct netdev_hw_addr *ha; 737 struct wl1251 *wl = hw->priv; 738 739 if (unlikely(wl->state == WL1251_STATE_OFF)) 740 return 0; 741 742 fp = kzalloc(sizeof(*fp), GFP_ATOMIC); 743 if (!fp) { 744 wl1251_error("Out of memory setting filters."); 745 return 0; 746 } 747 748 /* update multicast filtering parameters */ 749 fp->mc_list_length = 0; 750 if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) { 751 fp->enabled = false; 752 } else { 753 fp->enabled = true; 754 netdev_hw_addr_list_for_each(ha, mc_list) { 755 memcpy(fp->mc_list[fp->mc_list_length], 756 ha->addr, ETH_ALEN); 757 fp->mc_list_length++; 758 } 759 } 760 761 return (u64)(unsigned long)fp; 762 } 763 764 #define WL1251_SUPPORTED_FILTERS (FIF_ALLMULTI | \ 765 FIF_FCSFAIL | \ 766 FIF_BCN_PRBRESP_PROMISC | \ 767 FIF_CONTROL | \ 768 FIF_OTHER_BSS | \ 769 FIF_PROBE_REQ) 770 771 static void wl1251_op_configure_filter(struct ieee80211_hw *hw, 772 unsigned int changed, 773 unsigned int *total, u64 multicast) 774 { 775 struct wl1251_filter_params *fp = (void *)(unsigned long)multicast; 776 struct wl1251 *wl = hw->priv; 777 int ret; 778 779 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter"); 780 781 *total &= WL1251_SUPPORTED_FILTERS; 782 changed &= WL1251_SUPPORTED_FILTERS; 783 784 if (changed == 0) { 785 /* no filters which we support changed */ 786 kfree(fp); 787 return; 788 } 789 790 mutex_lock(&wl->mutex); 791 792 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 793 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 794 795 if (*total & FIF_ALLMULTI) 796 /* 797 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive 798 * all multicast frames 799 */ 800 wl->rx_config &= ~CFG_MC_FILTER_EN; 801 if (*total & FIF_FCSFAIL) 802 wl->rx_filter |= CFG_RX_FCS_ERROR; 803 if (*total & FIF_BCN_PRBRESP_PROMISC) { 804 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 805 wl->rx_config &= ~CFG_SSID_FILTER_EN; 806 } 807 if (*total & FIF_CONTROL) 808 wl->rx_filter |= CFG_RX_CTL_EN; 809 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid)) 810 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 811 if (*total & FIF_PROBE_REQ) 812 wl->rx_filter |= CFG_RX_PREQ_EN; 813 814 if (wl->state == WL1251_STATE_OFF) 815 goto out; 816 817 ret = wl1251_ps_elp_wakeup(wl); 818 if (ret < 0) 819 goto out; 820 821 if (*total & FIF_ALLMULTI) 822 ret = wl1251_acx_group_address_tbl(wl, false, NULL, 0); 823 else if (fp) 824 ret = wl1251_acx_group_address_tbl(wl, fp->enabled, 825 fp->mc_list, 826 fp->mc_list_length); 827 if (ret < 0) 828 goto out; 829 830 /* send filters to firmware */ 831 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter); 832 833 wl1251_ps_elp_sleep(wl); 834 835 out: 836 mutex_unlock(&wl->mutex); 837 kfree(fp); 838 } 839 840 /* HW encryption */ 841 static int wl1251_set_key_type(struct wl1251 *wl, 842 struct wl1251_cmd_set_keys *key, 843 enum set_key_cmd cmd, 844 struct ieee80211_key_conf *mac80211_key, 845 const u8 *addr) 846 { 847 switch (mac80211_key->cipher) { 848 case WLAN_CIPHER_SUITE_WEP40: 849 case WLAN_CIPHER_SUITE_WEP104: 850 if (is_broadcast_ether_addr(addr)) 851 key->key_type = KEY_WEP_DEFAULT; 852 else 853 key->key_type = KEY_WEP_ADDR; 854 855 mac80211_key->hw_key_idx = mac80211_key->keyidx; 856 break; 857 case WLAN_CIPHER_SUITE_TKIP: 858 if (is_broadcast_ether_addr(addr)) 859 key->key_type = KEY_TKIP_MIC_GROUP; 860 else 861 key->key_type = KEY_TKIP_MIC_PAIRWISE; 862 863 mac80211_key->hw_key_idx = mac80211_key->keyidx; 864 break; 865 case WLAN_CIPHER_SUITE_CCMP: 866 if (is_broadcast_ether_addr(addr)) 867 key->key_type = KEY_AES_GROUP; 868 else 869 key->key_type = KEY_AES_PAIRWISE; 870 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 871 break; 872 default: 873 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher); 874 return -EOPNOTSUPP; 875 } 876 877 return 0; 878 } 879 880 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 881 struct ieee80211_vif *vif, 882 struct ieee80211_sta *sta, 883 struct ieee80211_key_conf *key) 884 { 885 struct wl1251 *wl = hw->priv; 886 struct wl1251_cmd_set_keys *wl_cmd; 887 const u8 *addr; 888 int ret; 889 890 static const u8 bcast_addr[ETH_ALEN] = 891 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 892 893 wl1251_debug(DEBUG_MAC80211, "mac80211 set key"); 894 895 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL); 896 if (!wl_cmd) { 897 ret = -ENOMEM; 898 goto out; 899 } 900 901 addr = sta ? sta->addr : bcast_addr; 902 903 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd); 904 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN); 905 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x", 906 key->cipher, key->keyidx, key->keylen, key->flags); 907 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen); 908 909 if (is_zero_ether_addr(addr)) { 910 /* We dont support TX only encryption */ 911 ret = -EOPNOTSUPP; 912 goto out; 913 } 914 915 mutex_lock(&wl->mutex); 916 917 switch (cmd) { 918 case SET_KEY: 919 if (wl->monitor_present) { 920 ret = -EOPNOTSUPP; 921 goto out_unlock; 922 } 923 wl_cmd->key_action = KEY_ADD_OR_REPLACE; 924 break; 925 case DISABLE_KEY: 926 wl_cmd->key_action = KEY_REMOVE; 927 break; 928 default: 929 wl1251_error("Unsupported key cmd 0x%x", cmd); 930 break; 931 } 932 933 ret = wl1251_ps_elp_wakeup(wl); 934 if (ret < 0) 935 goto out_unlock; 936 937 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr); 938 if (ret < 0) { 939 wl1251_error("Set KEY type failed"); 940 goto out_sleep; 941 } 942 943 if (wl_cmd->key_type != KEY_WEP_DEFAULT) 944 memcpy(wl_cmd->addr, addr, ETH_ALEN); 945 946 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) || 947 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) { 948 /* 949 * We get the key in the following form: 950 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes) 951 * but the target is expecting: 952 * TKIP - RX MIC - TX MIC 953 */ 954 memcpy(wl_cmd->key, key->key, 16); 955 memcpy(wl_cmd->key + 16, key->key + 24, 8); 956 memcpy(wl_cmd->key + 24, key->key + 16, 8); 957 958 } else { 959 memcpy(wl_cmd->key, key->key, key->keylen); 960 } 961 wl_cmd->key_size = key->keylen; 962 963 wl_cmd->id = key->keyidx; 964 wl_cmd->ssid_profile = 0; 965 966 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd)); 967 968 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd)); 969 if (ret < 0) { 970 wl1251_warning("could not set keys"); 971 goto out_sleep; 972 } 973 974 out_sleep: 975 wl1251_ps_elp_sleep(wl); 976 977 out_unlock: 978 mutex_unlock(&wl->mutex); 979 980 out: 981 kfree(wl_cmd); 982 983 return ret; 984 } 985 986 static int wl1251_op_hw_scan(struct ieee80211_hw *hw, 987 struct ieee80211_vif *vif, 988 struct ieee80211_scan_request *hw_req) 989 { 990 struct cfg80211_scan_request *req = &hw_req->req; 991 struct wl1251 *wl = hw->priv; 992 struct sk_buff *skb; 993 size_t ssid_len = 0; 994 u8 *ssid = NULL; 995 int ret; 996 997 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan"); 998 999 if (req->n_ssids) { 1000 ssid = req->ssids[0].ssid; 1001 ssid_len = req->ssids[0].ssid_len; 1002 } 1003 1004 mutex_lock(&wl->mutex); 1005 1006 if (wl->scanning) { 1007 wl1251_debug(DEBUG_SCAN, "scan already in progress"); 1008 ret = -EINVAL; 1009 goto out; 1010 } 1011 1012 ret = wl1251_ps_elp_wakeup(wl); 1013 if (ret < 0) 1014 goto out; 1015 1016 if (hw->conf.flags & IEEE80211_CONF_IDLE) { 1017 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 1018 if (ret < 0) 1019 goto out_sleep; 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 skb = ieee80211_probereq_get(wl->hw, wl->vif->addr, ssid, ssid_len, 1027 req->ie_len); 1028 if (!skb) { 1029 ret = -ENOMEM; 1030 goto out_idle; 1031 } 1032 if (req->ie_len) 1033 skb_put_data(skb, req->ie, req->ie_len); 1034 1035 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data, 1036 skb->len); 1037 dev_kfree_skb(skb); 1038 if (ret < 0) 1039 goto out_idle; 1040 1041 ret = wl1251_cmd_trigger_scan_to(wl, 0); 1042 if (ret < 0) 1043 goto out_idle; 1044 1045 wl->scanning = true; 1046 1047 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels, 1048 req->n_channels, WL1251_SCAN_NUM_PROBES); 1049 if (ret < 0) { 1050 wl1251_debug(DEBUG_SCAN, "scan failed %d", ret); 1051 wl->scanning = false; 1052 goto out_idle; 1053 } 1054 goto out_sleep; 1055 1056 out_idle: 1057 if (hw->conf.flags & IEEE80211_CONF_IDLE) 1058 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 1059 out_sleep: 1060 wl1251_ps_elp_sleep(wl); 1061 1062 out: 1063 mutex_unlock(&wl->mutex); 1064 1065 return ret; 1066 } 1067 1068 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 1069 { 1070 struct wl1251 *wl = hw->priv; 1071 int ret; 1072 1073 mutex_lock(&wl->mutex); 1074 1075 ret = wl1251_ps_elp_wakeup(wl); 1076 if (ret < 0) 1077 goto out; 1078 1079 ret = wl1251_acx_rts_threshold(wl, (u16) value); 1080 if (ret < 0) 1081 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret); 1082 1083 wl1251_ps_elp_sleep(wl); 1084 1085 out: 1086 mutex_unlock(&wl->mutex); 1087 1088 return ret; 1089 } 1090 1091 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw, 1092 struct ieee80211_vif *vif, 1093 struct ieee80211_bss_conf *bss_conf, 1094 u32 changed) 1095 { 1096 struct wl1251 *wl = hw->priv; 1097 struct sk_buff *beacon, *skb; 1098 bool enable; 1099 int ret; 1100 1101 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed"); 1102 1103 mutex_lock(&wl->mutex); 1104 1105 ret = wl1251_ps_elp_wakeup(wl); 1106 if (ret < 0) 1107 goto out; 1108 1109 if (changed & BSS_CHANGED_CQM) { 1110 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold, 1111 WL1251_DEFAULT_LOW_RSSI_WEIGHT, 1112 WL1251_DEFAULT_LOW_RSSI_DEPTH, 1113 WL1251_ACX_LOW_RSSI_TYPE_EDGE); 1114 if (ret < 0) 1115 goto out; 1116 wl->rssi_thold = bss_conf->cqm_rssi_thold; 1117 } 1118 1119 if ((changed & BSS_CHANGED_BSSID) && 1120 memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) { 1121 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN); 1122 1123 if (!is_zero_ether_addr(wl->bssid)) { 1124 ret = wl1251_build_null_data(wl); 1125 if (ret < 0) 1126 goto out_sleep; 1127 1128 ret = wl1251_build_qos_null_data(wl); 1129 if (ret < 0) 1130 goto out_sleep; 1131 1132 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1133 wl->beacon_int, wl->dtim_period); 1134 if (ret < 0) 1135 goto out_sleep; 1136 } 1137 } 1138 1139 if (changed & BSS_CHANGED_ASSOC) { 1140 if (bss_conf->assoc) { 1141 wl->beacon_int = bss_conf->beacon_int; 1142 1143 skb = ieee80211_pspoll_get(wl->hw, wl->vif); 1144 if (!skb) 1145 goto out_sleep; 1146 1147 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL, 1148 skb->data, 1149 skb->len); 1150 dev_kfree_skb(skb); 1151 if (ret < 0) 1152 goto out_sleep; 1153 1154 ret = wl1251_acx_aid(wl, bss_conf->aid); 1155 if (ret < 0) 1156 goto out_sleep; 1157 } else { 1158 /* use defaults when not associated */ 1159 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1160 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1161 } 1162 } 1163 if (changed & BSS_CHANGED_ERP_SLOT) { 1164 if (bss_conf->use_short_slot) 1165 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT); 1166 else 1167 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG); 1168 if (ret < 0) { 1169 wl1251_warning("Set slot time failed %d", ret); 1170 goto out_sleep; 1171 } 1172 } 1173 1174 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 1175 if (bss_conf->use_short_preamble) 1176 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT); 1177 else 1178 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG); 1179 } 1180 1181 if (changed & BSS_CHANGED_ERP_CTS_PROT) { 1182 if (bss_conf->use_cts_prot) 1183 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE); 1184 else 1185 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE); 1186 if (ret < 0) { 1187 wl1251_warning("Set ctsprotect failed %d", ret); 1188 goto out_sleep; 1189 } 1190 } 1191 1192 if (changed & BSS_CHANGED_ARP_FILTER) { 1193 __be32 addr = bss_conf->arp_addr_list[0]; 1194 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS); 1195 1196 enable = bss_conf->arp_addr_cnt == 1 && bss_conf->assoc; 1197 ret = wl1251_acx_arp_ip_filter(wl, enable, addr); 1198 if (ret < 0) 1199 goto out_sleep; 1200 } 1201 1202 if (changed & BSS_CHANGED_BEACON) { 1203 beacon = ieee80211_beacon_get(hw, vif); 1204 if (!beacon) 1205 goto out_sleep; 1206 1207 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data, 1208 beacon->len); 1209 1210 if (ret < 0) { 1211 dev_kfree_skb(beacon); 1212 goto out_sleep; 1213 } 1214 1215 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data, 1216 beacon->len); 1217 1218 dev_kfree_skb(beacon); 1219 1220 if (ret < 0) 1221 goto out_sleep; 1222 1223 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1224 wl->beacon_int, wl->dtim_period); 1225 1226 if (ret < 0) 1227 goto out_sleep; 1228 } 1229 1230 out_sleep: 1231 wl1251_ps_elp_sleep(wl); 1232 1233 out: 1234 mutex_unlock(&wl->mutex); 1235 } 1236 1237 1238 /* can't be const, mac80211 writes to this */ 1239 static struct ieee80211_rate wl1251_rates[] = { 1240 { .bitrate = 10, 1241 .hw_value = 0x1, 1242 .hw_value_short = 0x1, }, 1243 { .bitrate = 20, 1244 .hw_value = 0x2, 1245 .hw_value_short = 0x2, 1246 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1247 { .bitrate = 55, 1248 .hw_value = 0x4, 1249 .hw_value_short = 0x4, 1250 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1251 { .bitrate = 110, 1252 .hw_value = 0x20, 1253 .hw_value_short = 0x20, 1254 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1255 { .bitrate = 60, 1256 .hw_value = 0x8, 1257 .hw_value_short = 0x8, }, 1258 { .bitrate = 90, 1259 .hw_value = 0x10, 1260 .hw_value_short = 0x10, }, 1261 { .bitrate = 120, 1262 .hw_value = 0x40, 1263 .hw_value_short = 0x40, }, 1264 { .bitrate = 180, 1265 .hw_value = 0x80, 1266 .hw_value_short = 0x80, }, 1267 { .bitrate = 240, 1268 .hw_value = 0x200, 1269 .hw_value_short = 0x200, }, 1270 { .bitrate = 360, 1271 .hw_value = 0x400, 1272 .hw_value_short = 0x400, }, 1273 { .bitrate = 480, 1274 .hw_value = 0x800, 1275 .hw_value_short = 0x800, }, 1276 { .bitrate = 540, 1277 .hw_value = 0x1000, 1278 .hw_value_short = 0x1000, }, 1279 }; 1280 1281 /* can't be const, mac80211 writes to this */ 1282 static struct ieee80211_channel wl1251_channels[] = { 1283 { .hw_value = 1, .center_freq = 2412}, 1284 { .hw_value = 2, .center_freq = 2417}, 1285 { .hw_value = 3, .center_freq = 2422}, 1286 { .hw_value = 4, .center_freq = 2427}, 1287 { .hw_value = 5, .center_freq = 2432}, 1288 { .hw_value = 6, .center_freq = 2437}, 1289 { .hw_value = 7, .center_freq = 2442}, 1290 { .hw_value = 8, .center_freq = 2447}, 1291 { .hw_value = 9, .center_freq = 2452}, 1292 { .hw_value = 10, .center_freq = 2457}, 1293 { .hw_value = 11, .center_freq = 2462}, 1294 { .hw_value = 12, .center_freq = 2467}, 1295 { .hw_value = 13, .center_freq = 2472}, 1296 }; 1297 1298 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, 1299 struct ieee80211_vif *vif, u16 queue, 1300 const struct ieee80211_tx_queue_params *params) 1301 { 1302 enum wl1251_acx_ps_scheme ps_scheme; 1303 struct wl1251 *wl = hw->priv; 1304 int ret; 1305 1306 mutex_lock(&wl->mutex); 1307 1308 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue); 1309 1310 ret = wl1251_ps_elp_wakeup(wl); 1311 if (ret < 0) 1312 goto out; 1313 1314 /* mac80211 uses units of 32 usec */ 1315 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue), 1316 params->cw_min, params->cw_max, 1317 params->aifs, params->txop * 32); 1318 if (ret < 0) 1319 goto out_sleep; 1320 1321 if (params->uapsd) 1322 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER; 1323 else 1324 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY; 1325 1326 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue), 1327 CHANNEL_TYPE_EDCF, 1328 wl1251_tx_get_queue(queue), ps_scheme, 1329 WL1251_ACX_ACK_POLICY_LEGACY); 1330 if (ret < 0) 1331 goto out_sleep; 1332 1333 out_sleep: 1334 wl1251_ps_elp_sleep(wl); 1335 1336 out: 1337 mutex_unlock(&wl->mutex); 1338 1339 return ret; 1340 } 1341 1342 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx, 1343 struct survey_info *survey) 1344 { 1345 struct wl1251 *wl = hw->priv; 1346 struct ieee80211_conf *conf = &hw->conf; 1347 1348 if (idx != 0) 1349 return -ENOENT; 1350 1351 survey->channel = conf->chandef.chan; 1352 survey->filled = SURVEY_INFO_NOISE_DBM; 1353 survey->noise = wl->noise; 1354 1355 return 0; 1356 } 1357 1358 /* can't be const, mac80211 writes to this */ 1359 static struct ieee80211_supported_band wl1251_band_2ghz = { 1360 .channels = wl1251_channels, 1361 .n_channels = ARRAY_SIZE(wl1251_channels), 1362 .bitrates = wl1251_rates, 1363 .n_bitrates = ARRAY_SIZE(wl1251_rates), 1364 }; 1365 1366 static const struct ieee80211_ops wl1251_ops = { 1367 .start = wl1251_op_start, 1368 .stop = wl1251_op_stop, 1369 .add_interface = wl1251_op_add_interface, 1370 .remove_interface = wl1251_op_remove_interface, 1371 .config = wl1251_op_config, 1372 .prepare_multicast = wl1251_op_prepare_multicast, 1373 .configure_filter = wl1251_op_configure_filter, 1374 .tx = wl1251_op_tx, 1375 .set_key = wl1251_op_set_key, 1376 .hw_scan = wl1251_op_hw_scan, 1377 .bss_info_changed = wl1251_op_bss_info_changed, 1378 .set_rts_threshold = wl1251_op_set_rts_threshold, 1379 .conf_tx = wl1251_op_conf_tx, 1380 .get_survey = wl1251_op_get_survey, 1381 }; 1382 1383 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data) 1384 { 1385 unsigned long timeout; 1386 1387 wl1251_reg_write32(wl, EE_ADDR, offset); 1388 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ); 1389 1390 /* EE_CTL_READ clears when data is ready */ 1391 timeout = jiffies + msecs_to_jiffies(100); 1392 while (1) { 1393 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ)) 1394 break; 1395 1396 if (time_after(jiffies, timeout)) 1397 return -ETIMEDOUT; 1398 1399 msleep(1); 1400 } 1401 1402 *data = wl1251_reg_read32(wl, EE_DATA); 1403 return 0; 1404 } 1405 1406 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset, 1407 u8 *data, size_t len) 1408 { 1409 size_t i; 1410 int ret; 1411 1412 wl1251_reg_write32(wl, EE_START, 0); 1413 1414 for (i = 0; i < len; i++) { 1415 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]); 1416 if (ret < 0) 1417 return ret; 1418 } 1419 1420 return 0; 1421 } 1422 1423 static int wl1251_read_eeprom_mac(struct wl1251 *wl) 1424 { 1425 u8 mac[ETH_ALEN]; 1426 int i, ret; 1427 1428 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE); 1429 1430 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac)); 1431 if (ret < 0) { 1432 wl1251_warning("failed to read MAC address from EEPROM"); 1433 return ret; 1434 } 1435 1436 /* MAC is stored in reverse order */ 1437 for (i = 0; i < ETH_ALEN; i++) 1438 wl->mac_addr[i] = mac[ETH_ALEN - i - 1]; 1439 1440 return 0; 1441 } 1442 1443 #define NVS_OFF_MAC_LEN 0x19 1444 #define NVS_OFF_MAC_ADDR_LO 0x1a 1445 #define NVS_OFF_MAC_ADDR_HI 0x1b 1446 #define NVS_OFF_MAC_DATA 0x1c 1447 1448 static int wl1251_check_nvs_mac(struct wl1251 *wl) 1449 { 1450 if (wl->nvs_len < 0x24) 1451 return -ENODATA; 1452 1453 /* length is 2 and data address is 0x546c (ANDed with 0xfffe) */ 1454 if (wl->nvs[NVS_OFF_MAC_LEN] != 2 || 1455 wl->nvs[NVS_OFF_MAC_ADDR_LO] != 0x6d || 1456 wl->nvs[NVS_OFF_MAC_ADDR_HI] != 0x54) 1457 return -EINVAL; 1458 1459 return 0; 1460 } 1461 1462 static int wl1251_read_nvs_mac(struct wl1251 *wl) 1463 { 1464 u8 mac[ETH_ALEN]; 1465 int i, ret; 1466 1467 ret = wl1251_check_nvs_mac(wl); 1468 if (ret) 1469 return ret; 1470 1471 /* MAC is stored in reverse order */ 1472 for (i = 0; i < ETH_ALEN; i++) 1473 mac[i] = wl->nvs[NVS_OFF_MAC_DATA + ETH_ALEN - i - 1]; 1474 1475 /* 00:00:20:07:03:09 is in example file wl1251-nvs.bin, so invalid */ 1476 if (ether_addr_equal_unaligned(mac, "\x00\x00\x20\x07\x03\x09")) 1477 return -EINVAL; 1478 1479 memcpy(wl->mac_addr, mac, ETH_ALEN); 1480 return 0; 1481 } 1482 1483 static int wl1251_write_nvs_mac(struct wl1251 *wl) 1484 { 1485 int i, ret; 1486 1487 ret = wl1251_check_nvs_mac(wl); 1488 if (ret) 1489 return ret; 1490 1491 /* MAC is stored in reverse order */ 1492 for (i = 0; i < ETH_ALEN; i++) 1493 wl->nvs[NVS_OFF_MAC_DATA + i] = wl->mac_addr[ETH_ALEN - i - 1]; 1494 1495 return 0; 1496 } 1497 1498 static int wl1251_register_hw(struct wl1251 *wl) 1499 { 1500 int ret; 1501 1502 if (wl->mac80211_registered) 1503 return 0; 1504 1505 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 1506 1507 ret = ieee80211_register_hw(wl->hw); 1508 if (ret < 0) { 1509 wl1251_error("unable to register mac80211 hw: %d", ret); 1510 return ret; 1511 } 1512 1513 wl->mac80211_registered = true; 1514 1515 wl1251_notice("loaded"); 1516 1517 return 0; 1518 } 1519 1520 int wl1251_init_ieee80211(struct wl1251 *wl) 1521 { 1522 int ret; 1523 1524 /* The tx descriptor buffer and the TKIP space */ 1525 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc) 1526 + WL1251_TKIP_IV_SPACE; 1527 1528 /* unit us */ 1529 /* FIXME: find a proper value */ 1530 1531 ieee80211_hw_set(wl->hw, SIGNAL_DBM); 1532 ieee80211_hw_set(wl->hw, SUPPORTS_PS); 1533 1534 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1535 BIT(NL80211_IFTYPE_ADHOC); 1536 wl->hw->wiphy->max_scan_ssids = 1; 1537 wl->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wl1251_band_2ghz; 1538 1539 wl->hw->queues = 4; 1540 1541 if (wl->nvs == NULL && !wl->use_eeprom) { 1542 ret = wl1251_fetch_nvs(wl); 1543 if (ret < 0) 1544 goto out; 1545 } 1546 1547 if (wl->use_eeprom) 1548 ret = wl1251_read_eeprom_mac(wl); 1549 else 1550 ret = wl1251_read_nvs_mac(wl); 1551 1552 if (ret == 0 && !is_valid_ether_addr(wl->mac_addr)) 1553 ret = -EINVAL; 1554 1555 if (ret < 0) { 1556 /* 1557 * In case our MAC address is not correctly set, 1558 * we use a random but Nokia MAC. 1559 */ 1560 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf}; 1561 memcpy(wl->mac_addr, nokia_oui, 3); 1562 get_random_bytes(wl->mac_addr + 3, 3); 1563 if (!wl->use_eeprom) 1564 wl1251_write_nvs_mac(wl); 1565 wl1251_warning("MAC address in eeprom or nvs data is not valid"); 1566 wl1251_warning("Setting random MAC address: %pM", wl->mac_addr); 1567 } 1568 1569 ret = wl1251_register_hw(wl); 1570 if (ret) 1571 goto out; 1572 1573 wl1251_debugfs_init(wl); 1574 wl1251_notice("initialized"); 1575 1576 ret = 0; 1577 1578 out: 1579 return ret; 1580 } 1581 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211); 1582 1583 struct ieee80211_hw *wl1251_alloc_hw(void) 1584 { 1585 struct ieee80211_hw *hw; 1586 struct wl1251 *wl; 1587 int i; 1588 1589 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops); 1590 if (!hw) { 1591 wl1251_error("could not alloc ieee80211_hw"); 1592 return ERR_PTR(-ENOMEM); 1593 } 1594 1595 wl = hw->priv; 1596 memset(wl, 0, sizeof(*wl)); 1597 1598 wl->hw = hw; 1599 1600 wl->data_in_count = 0; 1601 1602 skb_queue_head_init(&wl->tx_queue); 1603 1604 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work); 1605 wl->channel = WL1251_DEFAULT_CHANNEL; 1606 wl->monitor_present = false; 1607 wl->joined = false; 1608 wl->scanning = false; 1609 wl->bss_type = MAX_BSS_TYPE; 1610 wl->default_key = 0; 1611 wl->listen_int = 1; 1612 wl->rx_counter = 0; 1613 wl->rx_handled = 0; 1614 wl->rx_current_buffer = 0; 1615 wl->rx_last_id = 0; 1616 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 1617 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 1618 wl->elp = false; 1619 wl->station_mode = STATION_ACTIVE_MODE; 1620 wl->psm_requested = false; 1621 wl->psm_entry_retry = 0; 1622 wl->tx_queue_stopped = false; 1623 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 1624 wl->rssi_thold = 0; 1625 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1626 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1627 wl->vif = NULL; 1628 1629 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) 1630 wl->tx_frames[i] = NULL; 1631 1632 wl->next_tx_complete = 0; 1633 1634 INIT_WORK(&wl->irq_work, wl1251_irq_work); 1635 INIT_WORK(&wl->tx_work, wl1251_tx_work); 1636 1637 wl->state = WL1251_STATE_OFF; 1638 mutex_init(&wl->mutex); 1639 spin_lock_init(&wl->wl_lock); 1640 1641 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE; 1642 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE; 1643 1644 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL); 1645 if (!wl->rx_descriptor) { 1646 wl1251_error("could not allocate memory for rx descriptor"); 1647 ieee80211_free_hw(hw); 1648 return ERR_PTR(-ENOMEM); 1649 } 1650 1651 return hw; 1652 } 1653 EXPORT_SYMBOL_GPL(wl1251_alloc_hw); 1654 1655 int wl1251_free_hw(struct wl1251 *wl) 1656 { 1657 ieee80211_unregister_hw(wl->hw); 1658 1659 wl1251_debugfs_exit(wl); 1660 1661 kfree(wl->target_mem_map); 1662 kfree(wl->data_path); 1663 vfree(wl->fw); 1664 wl->fw = NULL; 1665 kfree(wl->nvs); 1666 wl->nvs = NULL; 1667 1668 kfree(wl->rx_descriptor); 1669 wl->rx_descriptor = NULL; 1670 1671 ieee80211_free_hw(wl->hw); 1672 1673 return 0; 1674 } 1675 EXPORT_SYMBOL_GPL(wl1251_free_hw); 1676 1677 MODULE_DESCRIPTION("TI wl1251 Wireless LAN Driver Core"); 1678 MODULE_LICENSE("GPL"); 1679 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>"); 1680 MODULE_FIRMWARE(WL1251_FW_NAME); 1681 MODULE_FIRMWARE(WL1251_NVS_NAME); 1682