1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * This file is part of wl1251 4 * 5 * Copyright (C) 2008-2009 Nokia Corporation 6 */ 7 8 #include <linux/module.h> 9 #include <linux/interrupt.h> 10 #include <linux/firmware.h> 11 #include <linux/delay.h> 12 #include <linux/irq.h> 13 #include <linux/crc32.h> 14 #include <linux/etherdevice.h> 15 #include <linux/vmalloc.h> 16 #include <linux/slab.h> 17 #include <linux/netdevice.h> 18 19 #include "wl1251.h" 20 #include "wl12xx_80211.h" 21 #include "reg.h" 22 #include "io.h" 23 #include "cmd.h" 24 #include "event.h" 25 #include "tx.h" 26 #include "rx.h" 27 #include "ps.h" 28 #include "init.h" 29 #include "debugfs.h" 30 #include "boot.h" 31 32 void wl1251_enable_interrupts(struct wl1251 *wl) 33 { 34 wl->if_ops->enable_irq(wl); 35 } 36 37 void wl1251_disable_interrupts(struct wl1251 *wl) 38 { 39 wl->if_ops->disable_irq(wl); 40 } 41 42 static int wl1251_power_off(struct wl1251 *wl) 43 { 44 return wl->if_ops->power(wl, false); 45 } 46 47 static int wl1251_power_on(struct wl1251 *wl) 48 { 49 return wl->if_ops->power(wl, true); 50 } 51 52 static int wl1251_fetch_firmware(struct wl1251 *wl) 53 { 54 const struct firmware *fw; 55 struct device *dev = wiphy_dev(wl->hw->wiphy); 56 int ret; 57 58 ret = request_firmware(&fw, WL1251_FW_NAME, dev); 59 60 if (ret < 0) { 61 wl1251_error("could not get firmware: %d", ret); 62 return ret; 63 } 64 65 if (fw->size % 4) { 66 wl1251_error("firmware size is not multiple of 32 bits: %zu", 67 fw->size); 68 ret = -EILSEQ; 69 goto out; 70 } 71 72 wl->fw_len = fw->size; 73 wl->fw = vmalloc(wl->fw_len); 74 75 if (!wl->fw) { 76 wl1251_error("could not allocate memory for the firmware"); 77 ret = -ENOMEM; 78 goto out; 79 } 80 81 memcpy(wl->fw, fw->data, wl->fw_len); 82 83 ret = 0; 84 85 out: 86 release_firmware(fw); 87 88 return ret; 89 } 90 91 static int wl1251_fetch_nvs(struct wl1251 *wl) 92 { 93 const struct firmware *fw; 94 struct device *dev = wiphy_dev(wl->hw->wiphy); 95 int ret; 96 97 ret = request_firmware(&fw, WL1251_NVS_NAME, dev); 98 99 if (ret < 0) { 100 wl1251_error("could not get nvs file: %d", ret); 101 return ret; 102 } 103 104 if (fw->size % 4) { 105 wl1251_error("nvs size is not multiple of 32 bits: %zu", 106 fw->size); 107 ret = -EILSEQ; 108 goto out; 109 } 110 111 wl->nvs = kmemdup(fw->data, fw->size, GFP_KERNEL); 112 113 if (!wl->nvs) { 114 wl1251_error("could not allocate memory for the nvs file"); 115 ret = -ENOMEM; 116 goto out; 117 } 118 119 wl->nvs_len = fw->size; 120 121 ret = 0; 122 123 out: 124 release_firmware(fw); 125 126 return ret; 127 } 128 129 static void wl1251_fw_wakeup(struct wl1251 *wl) 130 { 131 u32 elp_reg; 132 133 elp_reg = ELPCTRL_WAKE_UP; 134 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg); 135 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR); 136 137 if (!(elp_reg & ELPCTRL_WLAN_READY)) 138 wl1251_warning("WLAN not ready"); 139 } 140 141 static int wl1251_chip_wakeup(struct wl1251 *wl) 142 { 143 int ret; 144 145 ret = wl1251_power_on(wl); 146 if (ret < 0) 147 return ret; 148 149 msleep(WL1251_POWER_ON_SLEEP); 150 wl->if_ops->reset(wl); 151 152 /* We don't need a real memory partition here, because we only want 153 * to use the registers at this point. */ 154 wl1251_set_partition(wl, 155 0x00000000, 156 0x00000000, 157 REGISTERS_BASE, 158 REGISTERS_DOWN_SIZE); 159 160 /* ELP module wake up */ 161 wl1251_fw_wakeup(wl); 162 163 /* whal_FwCtrl_BootSm() */ 164 165 /* 0. read chip id from CHIP_ID */ 166 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B); 167 168 /* 1. check if chip id is valid */ 169 170 switch (wl->chip_id) { 171 case CHIP_ID_1251_PG12: 172 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)", 173 wl->chip_id); 174 break; 175 case CHIP_ID_1251_PG11: 176 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)", 177 wl->chip_id); 178 break; 179 case CHIP_ID_1251_PG10: 180 default: 181 wl1251_error("unsupported chip id: 0x%x", wl->chip_id); 182 ret = -ENODEV; 183 goto out; 184 } 185 186 if (wl->fw == NULL) { 187 ret = wl1251_fetch_firmware(wl); 188 if (ret < 0) 189 goto out; 190 } 191 192 out: 193 return ret; 194 } 195 196 #define WL1251_IRQ_LOOP_COUNT 10 197 static void wl1251_irq_work(struct work_struct *work) 198 { 199 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT; 200 struct wl1251 *wl = 201 container_of(work, struct wl1251, irq_work); 202 int ret; 203 204 mutex_lock(&wl->mutex); 205 206 wl1251_debug(DEBUG_IRQ, "IRQ work"); 207 208 if (wl->state == WL1251_STATE_OFF) 209 goto out; 210 211 ret = wl1251_ps_elp_wakeup(wl); 212 if (ret < 0) 213 goto out; 214 215 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL); 216 217 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); 218 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr); 219 220 do { 221 if (wl->data_path) { 222 wl->rx_counter = wl1251_mem_read32( 223 wl, wl->data_path->rx_control_addr); 224 225 /* We handle a frmware bug here */ 226 switch ((wl->rx_counter - wl->rx_handled) & 0xf) { 227 case 0: 228 wl1251_debug(DEBUG_IRQ, 229 "RX: FW and host in sync"); 230 intr &= ~WL1251_ACX_INTR_RX0_DATA; 231 intr &= ~WL1251_ACX_INTR_RX1_DATA; 232 break; 233 case 1: 234 wl1251_debug(DEBUG_IRQ, "RX: FW +1"); 235 intr |= WL1251_ACX_INTR_RX0_DATA; 236 intr &= ~WL1251_ACX_INTR_RX1_DATA; 237 break; 238 case 2: 239 wl1251_debug(DEBUG_IRQ, "RX: FW +2"); 240 intr |= WL1251_ACX_INTR_RX0_DATA; 241 intr |= WL1251_ACX_INTR_RX1_DATA; 242 break; 243 default: 244 wl1251_warning( 245 "RX: FW and host out of sync: %d", 246 wl->rx_counter - wl->rx_handled); 247 break; 248 } 249 250 wl->rx_handled = wl->rx_counter; 251 252 wl1251_debug(DEBUG_IRQ, "RX counter: %d", 253 wl->rx_counter); 254 } 255 256 intr &= wl->intr_mask; 257 258 if (intr == 0) { 259 wl1251_debug(DEBUG_IRQ, "INTR is 0"); 260 goto out_sleep; 261 } 262 263 if (intr & WL1251_ACX_INTR_RX0_DATA) { 264 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA"); 265 wl1251_rx(wl); 266 } 267 268 if (intr & WL1251_ACX_INTR_RX1_DATA) { 269 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA"); 270 wl1251_rx(wl); 271 } 272 273 if (intr & WL1251_ACX_INTR_TX_RESULT) { 274 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT"); 275 wl1251_tx_complete(wl); 276 } 277 278 if (intr & WL1251_ACX_INTR_EVENT_A) { 279 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A"); 280 wl1251_event_handle(wl, 0); 281 } 282 283 if (intr & WL1251_ACX_INTR_EVENT_B) { 284 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B"); 285 wl1251_event_handle(wl, 1); 286 } 287 288 if (intr & WL1251_ACX_INTR_INIT_COMPLETE) 289 wl1251_debug(DEBUG_IRQ, 290 "WL1251_ACX_INTR_INIT_COMPLETE"); 291 292 if (--ctr == 0) 293 break; 294 295 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); 296 } while (intr); 297 298 out_sleep: 299 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask)); 300 wl1251_ps_elp_sleep(wl); 301 302 out: 303 mutex_unlock(&wl->mutex); 304 } 305 306 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel, 307 u16 beacon_interval, u8 dtim_period) 308 { 309 int ret; 310 311 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE, 312 DEFAULT_HW_GEN_MODULATION_TYPE, 313 wl->tx_mgmt_frm_rate, 314 wl->tx_mgmt_frm_mod); 315 if (ret < 0) 316 goto out; 317 318 /* 319 * Join command applies filters, and if we are not associated, 320 * BSSID filter must be disabled for association to work. 321 */ 322 if (is_zero_ether_addr(wl->bssid)) 323 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 324 325 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval, 326 dtim_period); 327 if (ret < 0) 328 goto out; 329 330 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100); 331 if (ret < 0) 332 wl1251_warning("join timeout"); 333 334 out: 335 return ret; 336 } 337 338 static void wl1251_op_tx(struct ieee80211_hw *hw, 339 struct ieee80211_tx_control *control, 340 struct sk_buff *skb) 341 { 342 struct wl1251 *wl = hw->priv; 343 unsigned long flags; 344 345 skb_queue_tail(&wl->tx_queue, skb); 346 347 /* 348 * The chip specific setup must run before the first TX packet - 349 * before that, the tx_work will not be initialized! 350 */ 351 352 ieee80211_queue_work(wl->hw, &wl->tx_work); 353 354 /* 355 * The workqueue is slow to process the tx_queue and we need stop 356 * the queue here, otherwise the queue will get too long. 357 */ 358 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) { 359 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues"); 360 361 spin_lock_irqsave(&wl->wl_lock, flags); 362 ieee80211_stop_queues(wl->hw); 363 wl->tx_queue_stopped = true; 364 spin_unlock_irqrestore(&wl->wl_lock, flags); 365 } 366 } 367 368 static int wl1251_op_start(struct ieee80211_hw *hw) 369 { 370 struct wl1251 *wl = hw->priv; 371 struct wiphy *wiphy = hw->wiphy; 372 int ret = 0; 373 374 wl1251_debug(DEBUG_MAC80211, "mac80211 start"); 375 376 mutex_lock(&wl->mutex); 377 378 if (wl->state != WL1251_STATE_OFF) { 379 wl1251_error("cannot start because not in off state: %d", 380 wl->state); 381 ret = -EBUSY; 382 goto out; 383 } 384 385 ret = wl1251_chip_wakeup(wl); 386 if (ret < 0) 387 goto out; 388 389 ret = wl1251_boot(wl); 390 if (ret < 0) 391 goto out; 392 393 ret = wl1251_hw_init(wl); 394 if (ret < 0) 395 goto out; 396 397 ret = wl1251_acx_station_id(wl); 398 if (ret < 0) 399 goto out; 400 401 wl->state = WL1251_STATE_ON; 402 403 wl1251_info("firmware booted (%s)", wl->fw_ver); 404 405 /* update hw/fw version info in wiphy struct */ 406 wiphy->hw_version = wl->chip_id; 407 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version)); 408 409 out: 410 if (ret < 0) 411 wl1251_power_off(wl); 412 413 mutex_unlock(&wl->mutex); 414 415 return ret; 416 } 417 418 static void wl1251_op_stop(struct ieee80211_hw *hw) 419 { 420 struct wl1251 *wl = hw->priv; 421 422 wl1251_info("down"); 423 424 wl1251_debug(DEBUG_MAC80211, "mac80211 stop"); 425 426 mutex_lock(&wl->mutex); 427 428 WARN_ON(wl->state != WL1251_STATE_ON); 429 430 if (wl->scanning) { 431 struct cfg80211_scan_info info = { 432 .aborted = true, 433 }; 434 435 ieee80211_scan_completed(wl->hw, &info); 436 wl->scanning = false; 437 } 438 439 wl->state = WL1251_STATE_OFF; 440 441 wl1251_disable_interrupts(wl); 442 443 mutex_unlock(&wl->mutex); 444 445 cancel_work_sync(&wl->irq_work); 446 cancel_work_sync(&wl->tx_work); 447 cancel_delayed_work_sync(&wl->elp_work); 448 449 mutex_lock(&wl->mutex); 450 451 /* let's notify MAC80211 about the remaining pending TX frames */ 452 wl1251_tx_flush(wl); 453 wl1251_power_off(wl); 454 455 eth_zero_addr(wl->bssid); 456 wl->listen_int = 1; 457 wl->bss_type = MAX_BSS_TYPE; 458 459 wl->data_in_count = 0; 460 wl->rx_counter = 0; 461 wl->rx_handled = 0; 462 wl->rx_current_buffer = 0; 463 wl->rx_last_id = 0; 464 wl->next_tx_complete = 0; 465 wl->elp = false; 466 wl->station_mode = STATION_ACTIVE_MODE; 467 wl->psm_entry_retry = 0; 468 wl->tx_queue_stopped = false; 469 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 470 wl->rssi_thold = 0; 471 wl->channel = WL1251_DEFAULT_CHANNEL; 472 wl->monitor_present = false; 473 wl->joined = false; 474 475 wl1251_debugfs_reset(wl); 476 477 mutex_unlock(&wl->mutex); 478 } 479 480 static int wl1251_op_add_interface(struct ieee80211_hw *hw, 481 struct ieee80211_vif *vif) 482 { 483 struct wl1251 *wl = hw->priv; 484 int ret = 0; 485 486 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 487 IEEE80211_VIF_SUPPORTS_UAPSD | 488 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 489 490 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM", 491 vif->type, vif->addr); 492 493 mutex_lock(&wl->mutex); 494 if (wl->vif) { 495 ret = -EBUSY; 496 goto out; 497 } 498 499 wl->vif = vif; 500 501 switch (vif->type) { 502 case NL80211_IFTYPE_STATION: 503 wl->bss_type = BSS_TYPE_STA_BSS; 504 break; 505 case NL80211_IFTYPE_ADHOC: 506 wl->bss_type = BSS_TYPE_IBSS; 507 break; 508 default: 509 ret = -EOPNOTSUPP; 510 goto out; 511 } 512 513 if (!ether_addr_equal_unaligned(wl->mac_addr, vif->addr)) { 514 memcpy(wl->mac_addr, vif->addr, ETH_ALEN); 515 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 516 ret = wl1251_acx_station_id(wl); 517 if (ret < 0) 518 goto out; 519 } 520 521 out: 522 mutex_unlock(&wl->mutex); 523 return ret; 524 } 525 526 static void wl1251_op_remove_interface(struct ieee80211_hw *hw, 527 struct ieee80211_vif *vif) 528 { 529 struct wl1251 *wl = hw->priv; 530 531 mutex_lock(&wl->mutex); 532 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface"); 533 wl->vif = NULL; 534 eth_zero_addr(wl->bssid); 535 mutex_unlock(&wl->mutex); 536 } 537 538 static int wl1251_build_null_data(struct wl1251 *wl) 539 { 540 struct sk_buff *skb = NULL; 541 int size; 542 void *ptr; 543 int ret = -ENOMEM; 544 545 if (wl->bss_type == BSS_TYPE_IBSS) { 546 size = sizeof(struct wl12xx_null_data_template); 547 ptr = NULL; 548 } else { 549 skb = ieee80211_nullfunc_get(wl->hw, wl->vif, false); 550 if (!skb) 551 goto out; 552 size = skb->len; 553 ptr = skb->data; 554 } 555 556 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA, ptr, size); 557 558 out: 559 dev_kfree_skb(skb); 560 if (ret) 561 wl1251_warning("cmd build null data failed: %d", ret); 562 563 return ret; 564 } 565 566 static int wl1251_build_qos_null_data(struct wl1251 *wl) 567 { 568 struct ieee80211_qos_hdr template; 569 570 memset(&template, 0, sizeof(template)); 571 572 memcpy(template.addr1, wl->bssid, ETH_ALEN); 573 memcpy(template.addr2, wl->mac_addr, ETH_ALEN); 574 memcpy(template.addr3, wl->bssid, ETH_ALEN); 575 576 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | 577 IEEE80211_STYPE_QOS_NULLFUNC | 578 IEEE80211_FCTL_TODS); 579 580 /* FIXME: not sure what priority to use here */ 581 template.qos_ctrl = cpu_to_le16(0); 582 583 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template, 584 sizeof(template)); 585 } 586 587 static bool wl1251_can_do_pm(struct ieee80211_conf *conf, struct wl1251 *wl) 588 { 589 return (conf->flags & IEEE80211_CONF_PS) && !wl->monitor_present; 590 } 591 592 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed) 593 { 594 struct wl1251 *wl = hw->priv; 595 struct ieee80211_conf *conf = &hw->conf; 596 int channel, ret = 0; 597 598 channel = ieee80211_frequency_to_channel( 599 conf->chandef.chan->center_freq); 600 601 wl1251_debug(DEBUG_MAC80211, 602 "mac80211 config ch %d monitor %s psm %s power %d", 603 channel, 604 conf->flags & IEEE80211_CONF_MONITOR ? "on" : "off", 605 conf->flags & IEEE80211_CONF_PS ? "on" : "off", 606 conf->power_level); 607 608 mutex_lock(&wl->mutex); 609 610 ret = wl1251_ps_elp_wakeup(wl); 611 if (ret < 0) 612 goto out; 613 614 if (changed & IEEE80211_CONF_CHANGE_MONITOR) { 615 u32 mode; 616 617 if (conf->flags & IEEE80211_CONF_MONITOR) { 618 wl->monitor_present = true; 619 mode = DF_SNIFF_MODE_ENABLE | DF_ENCRYPTION_DISABLE; 620 } else { 621 wl->monitor_present = false; 622 mode = 0; 623 } 624 625 ret = wl1251_acx_feature_cfg(wl, mode); 626 if (ret < 0) 627 goto out_sleep; 628 } 629 630 if (channel != wl->channel) { 631 wl->channel = channel; 632 633 /* 634 * Use ENABLE_RX command for channel switching when no 635 * interface is present (monitor mode only). 636 * This leaves the tx path disabled in firmware, whereas 637 * the usual JOIN command seems to transmit some frames 638 * at firmware level. 639 */ 640 if (wl->vif == NULL) { 641 wl->joined = false; 642 ret = wl1251_cmd_data_path_rx(wl, wl->channel, 1); 643 } else { 644 ret = wl1251_join(wl, wl->bss_type, wl->channel, 645 wl->beacon_int, wl->dtim_period); 646 } 647 if (ret < 0) 648 goto out_sleep; 649 } 650 651 if (wl1251_can_do_pm(conf, wl) && !wl->psm_requested) { 652 wl1251_debug(DEBUG_PSM, "psm enabled"); 653 654 wl->psm_requested = true; 655 656 wl->dtim_period = conf->ps_dtim_period; 657 658 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int, 659 wl->dtim_period); 660 661 /* 662 * mac80211 enables PSM only if we're already associated. 663 */ 664 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE); 665 if (ret < 0) 666 goto out_sleep; 667 } else if (!wl1251_can_do_pm(conf, wl) && wl->psm_requested) { 668 wl1251_debug(DEBUG_PSM, "psm disabled"); 669 670 wl->psm_requested = false; 671 672 if (wl->station_mode != STATION_ACTIVE_MODE) { 673 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 674 if (ret < 0) 675 goto out_sleep; 676 } 677 } 678 679 if (changed & IEEE80211_CONF_CHANGE_IDLE && !wl->scanning) { 680 if (conf->flags & IEEE80211_CONF_IDLE) { 681 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 682 if (ret < 0) 683 goto out_sleep; 684 } else { 685 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 686 if (ret < 0) 687 goto out_sleep; 688 ret = wl1251_join(wl, wl->bss_type, wl->channel, 689 wl->beacon_int, wl->dtim_period); 690 if (ret < 0) 691 goto out_sleep; 692 } 693 } 694 695 if (conf->power_level != wl->power_level) { 696 ret = wl1251_acx_tx_power(wl, conf->power_level); 697 if (ret < 0) 698 goto out_sleep; 699 700 wl->power_level = conf->power_level; 701 } 702 703 out_sleep: 704 wl1251_ps_elp_sleep(wl); 705 706 out: 707 mutex_unlock(&wl->mutex); 708 709 return ret; 710 } 711 712 struct wl1251_filter_params { 713 bool enabled; 714 int mc_list_length; 715 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN]; 716 }; 717 718 static u64 wl1251_op_prepare_multicast(struct ieee80211_hw *hw, 719 struct netdev_hw_addr_list *mc_list) 720 { 721 struct wl1251_filter_params *fp; 722 struct netdev_hw_addr *ha; 723 struct wl1251 *wl = hw->priv; 724 725 if (unlikely(wl->state == WL1251_STATE_OFF)) 726 return 0; 727 728 fp = kzalloc(sizeof(*fp), GFP_ATOMIC); 729 if (!fp) { 730 wl1251_error("Out of memory setting filters."); 731 return 0; 732 } 733 734 /* update multicast filtering parameters */ 735 fp->mc_list_length = 0; 736 if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) { 737 fp->enabled = false; 738 } else { 739 fp->enabled = true; 740 netdev_hw_addr_list_for_each(ha, mc_list) { 741 memcpy(fp->mc_list[fp->mc_list_length], 742 ha->addr, ETH_ALEN); 743 fp->mc_list_length++; 744 } 745 } 746 747 return (u64)(unsigned long)fp; 748 } 749 750 #define WL1251_SUPPORTED_FILTERS (FIF_ALLMULTI | \ 751 FIF_FCSFAIL | \ 752 FIF_BCN_PRBRESP_PROMISC | \ 753 FIF_CONTROL | \ 754 FIF_OTHER_BSS | \ 755 FIF_PROBE_REQ) 756 757 static void wl1251_op_configure_filter(struct ieee80211_hw *hw, 758 unsigned int changed, 759 unsigned int *total, u64 multicast) 760 { 761 struct wl1251_filter_params *fp = (void *)(unsigned long)multicast; 762 struct wl1251 *wl = hw->priv; 763 int ret; 764 765 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter"); 766 767 *total &= WL1251_SUPPORTED_FILTERS; 768 changed &= WL1251_SUPPORTED_FILTERS; 769 770 if (changed == 0) { 771 /* no filters which we support changed */ 772 kfree(fp); 773 return; 774 } 775 776 mutex_lock(&wl->mutex); 777 778 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 779 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 780 781 if (*total & FIF_ALLMULTI) 782 /* 783 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive 784 * all multicast frames 785 */ 786 wl->rx_config &= ~CFG_MC_FILTER_EN; 787 if (*total & FIF_FCSFAIL) 788 wl->rx_filter |= CFG_RX_FCS_ERROR; 789 if (*total & FIF_BCN_PRBRESP_PROMISC) { 790 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 791 wl->rx_config &= ~CFG_SSID_FILTER_EN; 792 } 793 if (*total & FIF_CONTROL) 794 wl->rx_filter |= CFG_RX_CTL_EN; 795 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid)) 796 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 797 if (*total & FIF_PROBE_REQ) 798 wl->rx_filter |= CFG_RX_PREQ_EN; 799 800 if (wl->state == WL1251_STATE_OFF) 801 goto out; 802 803 ret = wl1251_ps_elp_wakeup(wl); 804 if (ret < 0) 805 goto out; 806 807 if (*total & FIF_ALLMULTI) 808 ret = wl1251_acx_group_address_tbl(wl, false, NULL, 0); 809 else if (fp) 810 ret = wl1251_acx_group_address_tbl(wl, fp->enabled, 811 fp->mc_list, 812 fp->mc_list_length); 813 if (ret < 0) 814 goto out; 815 816 /* send filters to firmware */ 817 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter); 818 819 wl1251_ps_elp_sleep(wl); 820 821 out: 822 mutex_unlock(&wl->mutex); 823 kfree(fp); 824 } 825 826 /* HW encryption */ 827 static int wl1251_set_key_type(struct wl1251 *wl, 828 struct wl1251_cmd_set_keys *key, 829 enum set_key_cmd cmd, 830 struct ieee80211_key_conf *mac80211_key, 831 const u8 *addr) 832 { 833 switch (mac80211_key->cipher) { 834 case WLAN_CIPHER_SUITE_WEP40: 835 case WLAN_CIPHER_SUITE_WEP104: 836 if (is_broadcast_ether_addr(addr)) 837 key->key_type = KEY_WEP_DEFAULT; 838 else 839 key->key_type = KEY_WEP_ADDR; 840 841 mac80211_key->hw_key_idx = mac80211_key->keyidx; 842 break; 843 case WLAN_CIPHER_SUITE_TKIP: 844 if (is_broadcast_ether_addr(addr)) 845 key->key_type = KEY_TKIP_MIC_GROUP; 846 else 847 key->key_type = KEY_TKIP_MIC_PAIRWISE; 848 849 mac80211_key->hw_key_idx = mac80211_key->keyidx; 850 break; 851 case WLAN_CIPHER_SUITE_CCMP: 852 if (is_broadcast_ether_addr(addr)) 853 key->key_type = KEY_AES_GROUP; 854 else 855 key->key_type = KEY_AES_PAIRWISE; 856 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 857 break; 858 default: 859 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher); 860 return -EOPNOTSUPP; 861 } 862 863 return 0; 864 } 865 866 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 867 struct ieee80211_vif *vif, 868 struct ieee80211_sta *sta, 869 struct ieee80211_key_conf *key) 870 { 871 struct wl1251 *wl = hw->priv; 872 struct wl1251_cmd_set_keys *wl_cmd; 873 const u8 *addr; 874 int ret; 875 876 static const u8 bcast_addr[ETH_ALEN] = 877 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 878 879 wl1251_debug(DEBUG_MAC80211, "mac80211 set key"); 880 881 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL); 882 if (!wl_cmd) { 883 ret = -ENOMEM; 884 goto out; 885 } 886 887 addr = sta ? sta->addr : bcast_addr; 888 889 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd); 890 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN); 891 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x", 892 key->cipher, key->keyidx, key->keylen, key->flags); 893 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen); 894 895 if (is_zero_ether_addr(addr)) { 896 /* We dont support TX only encryption */ 897 ret = -EOPNOTSUPP; 898 goto out; 899 } 900 901 mutex_lock(&wl->mutex); 902 903 switch (cmd) { 904 case SET_KEY: 905 if (wl->monitor_present) { 906 ret = -EOPNOTSUPP; 907 goto out_unlock; 908 } 909 wl_cmd->key_action = KEY_ADD_OR_REPLACE; 910 break; 911 case DISABLE_KEY: 912 wl_cmd->key_action = KEY_REMOVE; 913 break; 914 default: 915 wl1251_error("Unsupported key cmd 0x%x", cmd); 916 break; 917 } 918 919 ret = wl1251_ps_elp_wakeup(wl); 920 if (ret < 0) 921 goto out_unlock; 922 923 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr); 924 if (ret < 0) { 925 wl1251_error("Set KEY type failed"); 926 goto out_sleep; 927 } 928 929 if (wl_cmd->key_type != KEY_WEP_DEFAULT) 930 memcpy(wl_cmd->addr, addr, ETH_ALEN); 931 932 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) || 933 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) { 934 /* 935 * We get the key in the following form: 936 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes) 937 * but the target is expecting: 938 * TKIP - RX MIC - TX MIC 939 */ 940 memcpy(wl_cmd->key, key->key, 16); 941 memcpy(wl_cmd->key + 16, key->key + 24, 8); 942 memcpy(wl_cmd->key + 24, key->key + 16, 8); 943 944 } else { 945 memcpy(wl_cmd->key, key->key, key->keylen); 946 } 947 wl_cmd->key_size = key->keylen; 948 949 wl_cmd->id = key->keyidx; 950 wl_cmd->ssid_profile = 0; 951 952 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd)); 953 954 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd)); 955 if (ret < 0) { 956 wl1251_warning("could not set keys"); 957 goto out_sleep; 958 } 959 960 out_sleep: 961 wl1251_ps_elp_sleep(wl); 962 963 out_unlock: 964 mutex_unlock(&wl->mutex); 965 966 out: 967 kfree(wl_cmd); 968 969 return ret; 970 } 971 972 static int wl1251_op_hw_scan(struct ieee80211_hw *hw, 973 struct ieee80211_vif *vif, 974 struct ieee80211_scan_request *hw_req) 975 { 976 struct cfg80211_scan_request *req = &hw_req->req; 977 struct wl1251 *wl = hw->priv; 978 struct sk_buff *skb; 979 size_t ssid_len = 0; 980 u8 *ssid = NULL; 981 int ret; 982 983 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan"); 984 985 if (req->n_ssids) { 986 ssid = req->ssids[0].ssid; 987 ssid_len = req->ssids[0].ssid_len; 988 } 989 990 mutex_lock(&wl->mutex); 991 992 if (wl->scanning) { 993 wl1251_debug(DEBUG_SCAN, "scan already in progress"); 994 ret = -EINVAL; 995 goto out; 996 } 997 998 ret = wl1251_ps_elp_wakeup(wl); 999 if (ret < 0) 1000 goto out; 1001 1002 if (hw->conf.flags & IEEE80211_CONF_IDLE) { 1003 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 1004 if (ret < 0) 1005 goto out_sleep; 1006 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1007 wl->beacon_int, wl->dtim_period); 1008 if (ret < 0) 1009 goto out_sleep; 1010 } 1011 1012 skb = ieee80211_probereq_get(wl->hw, wl->vif->addr, ssid, ssid_len, 1013 req->ie_len); 1014 if (!skb) { 1015 ret = -ENOMEM; 1016 goto out_idle; 1017 } 1018 if (req->ie_len) 1019 skb_put_data(skb, req->ie, req->ie_len); 1020 1021 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data, 1022 skb->len); 1023 dev_kfree_skb(skb); 1024 if (ret < 0) 1025 goto out_idle; 1026 1027 ret = wl1251_cmd_trigger_scan_to(wl, 0); 1028 if (ret < 0) 1029 goto out_idle; 1030 1031 wl->scanning = true; 1032 1033 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels, 1034 req->n_channels, WL1251_SCAN_NUM_PROBES); 1035 if (ret < 0) { 1036 wl1251_debug(DEBUG_SCAN, "scan failed %d", ret); 1037 wl->scanning = false; 1038 goto out_idle; 1039 } 1040 goto out_sleep; 1041 1042 out_idle: 1043 if (hw->conf.flags & IEEE80211_CONF_IDLE) 1044 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 1045 out_sleep: 1046 wl1251_ps_elp_sleep(wl); 1047 1048 out: 1049 mutex_unlock(&wl->mutex); 1050 1051 return ret; 1052 } 1053 1054 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 1055 { 1056 struct wl1251 *wl = hw->priv; 1057 int ret; 1058 1059 mutex_lock(&wl->mutex); 1060 1061 ret = wl1251_ps_elp_wakeup(wl); 1062 if (ret < 0) 1063 goto out; 1064 1065 ret = wl1251_acx_rts_threshold(wl, (u16) value); 1066 if (ret < 0) 1067 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret); 1068 1069 wl1251_ps_elp_sleep(wl); 1070 1071 out: 1072 mutex_unlock(&wl->mutex); 1073 1074 return ret; 1075 } 1076 1077 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw, 1078 struct ieee80211_vif *vif, 1079 struct ieee80211_bss_conf *bss_conf, 1080 u64 changed) 1081 { 1082 struct wl1251 *wl = hw->priv; 1083 struct sk_buff *beacon, *skb; 1084 bool enable; 1085 int ret; 1086 1087 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed"); 1088 1089 mutex_lock(&wl->mutex); 1090 1091 ret = wl1251_ps_elp_wakeup(wl); 1092 if (ret < 0) 1093 goto out; 1094 1095 if (changed & BSS_CHANGED_CQM) { 1096 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold, 1097 WL1251_DEFAULT_LOW_RSSI_WEIGHT, 1098 WL1251_DEFAULT_LOW_RSSI_DEPTH, 1099 WL1251_ACX_LOW_RSSI_TYPE_EDGE); 1100 if (ret < 0) 1101 goto out; 1102 wl->rssi_thold = bss_conf->cqm_rssi_thold; 1103 } 1104 1105 if ((changed & BSS_CHANGED_BSSID) && 1106 memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) { 1107 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN); 1108 1109 if (!is_zero_ether_addr(wl->bssid)) { 1110 ret = wl1251_build_null_data(wl); 1111 if (ret < 0) 1112 goto out_sleep; 1113 1114 ret = wl1251_build_qos_null_data(wl); 1115 if (ret < 0) 1116 goto out_sleep; 1117 1118 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1119 wl->beacon_int, wl->dtim_period); 1120 if (ret < 0) 1121 goto out_sleep; 1122 } 1123 } 1124 1125 if (changed & BSS_CHANGED_ASSOC) { 1126 if (vif->cfg.assoc) { 1127 wl->beacon_int = bss_conf->beacon_int; 1128 1129 skb = ieee80211_pspoll_get(wl->hw, wl->vif); 1130 if (!skb) 1131 goto out_sleep; 1132 1133 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL, 1134 skb->data, 1135 skb->len); 1136 dev_kfree_skb(skb); 1137 if (ret < 0) 1138 goto out_sleep; 1139 1140 ret = wl1251_acx_aid(wl, vif->cfg.aid); 1141 if (ret < 0) 1142 goto out_sleep; 1143 } else { 1144 /* use defaults when not associated */ 1145 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1146 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1147 } 1148 } 1149 if (changed & BSS_CHANGED_ERP_SLOT) { 1150 if (bss_conf->use_short_slot) 1151 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT); 1152 else 1153 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG); 1154 if (ret < 0) { 1155 wl1251_warning("Set slot time failed %d", ret); 1156 goto out_sleep; 1157 } 1158 } 1159 1160 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 1161 if (bss_conf->use_short_preamble) 1162 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT); 1163 else 1164 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG); 1165 } 1166 1167 if (changed & BSS_CHANGED_ERP_CTS_PROT) { 1168 if (bss_conf->use_cts_prot) 1169 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE); 1170 else 1171 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE); 1172 if (ret < 0) { 1173 wl1251_warning("Set ctsprotect failed %d", ret); 1174 goto out_sleep; 1175 } 1176 } 1177 1178 if (changed & BSS_CHANGED_ARP_FILTER) { 1179 __be32 addr = vif->cfg.arp_addr_list[0]; 1180 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS); 1181 1182 enable = vif->cfg.arp_addr_cnt == 1 && vif->cfg.assoc; 1183 ret = wl1251_acx_arp_ip_filter(wl, enable, addr); 1184 if (ret < 0) 1185 goto out_sleep; 1186 } 1187 1188 if (changed & BSS_CHANGED_BEACON) { 1189 beacon = ieee80211_beacon_get(hw, vif, 0); 1190 if (!beacon) 1191 goto out_sleep; 1192 1193 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data, 1194 beacon->len); 1195 1196 if (ret < 0) { 1197 dev_kfree_skb(beacon); 1198 goto out_sleep; 1199 } 1200 1201 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data, 1202 beacon->len); 1203 1204 dev_kfree_skb(beacon); 1205 1206 if (ret < 0) 1207 goto out_sleep; 1208 1209 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1210 wl->beacon_int, wl->dtim_period); 1211 1212 if (ret < 0) 1213 goto out_sleep; 1214 } 1215 1216 out_sleep: 1217 wl1251_ps_elp_sleep(wl); 1218 1219 out: 1220 mutex_unlock(&wl->mutex); 1221 } 1222 1223 1224 /* can't be const, mac80211 writes to this */ 1225 static struct ieee80211_rate wl1251_rates[] = { 1226 { .bitrate = 10, 1227 .hw_value = 0x1, 1228 .hw_value_short = 0x1, }, 1229 { .bitrate = 20, 1230 .hw_value = 0x2, 1231 .hw_value_short = 0x2, 1232 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1233 { .bitrate = 55, 1234 .hw_value = 0x4, 1235 .hw_value_short = 0x4, 1236 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1237 { .bitrate = 110, 1238 .hw_value = 0x20, 1239 .hw_value_short = 0x20, 1240 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1241 { .bitrate = 60, 1242 .hw_value = 0x8, 1243 .hw_value_short = 0x8, }, 1244 { .bitrate = 90, 1245 .hw_value = 0x10, 1246 .hw_value_short = 0x10, }, 1247 { .bitrate = 120, 1248 .hw_value = 0x40, 1249 .hw_value_short = 0x40, }, 1250 { .bitrate = 180, 1251 .hw_value = 0x80, 1252 .hw_value_short = 0x80, }, 1253 { .bitrate = 240, 1254 .hw_value = 0x200, 1255 .hw_value_short = 0x200, }, 1256 { .bitrate = 360, 1257 .hw_value = 0x400, 1258 .hw_value_short = 0x400, }, 1259 { .bitrate = 480, 1260 .hw_value = 0x800, 1261 .hw_value_short = 0x800, }, 1262 { .bitrate = 540, 1263 .hw_value = 0x1000, 1264 .hw_value_short = 0x1000, }, 1265 }; 1266 1267 /* can't be const, mac80211 writes to this */ 1268 static struct ieee80211_channel wl1251_channels[] = { 1269 { .hw_value = 1, .center_freq = 2412}, 1270 { .hw_value = 2, .center_freq = 2417}, 1271 { .hw_value = 3, .center_freq = 2422}, 1272 { .hw_value = 4, .center_freq = 2427}, 1273 { .hw_value = 5, .center_freq = 2432}, 1274 { .hw_value = 6, .center_freq = 2437}, 1275 { .hw_value = 7, .center_freq = 2442}, 1276 { .hw_value = 8, .center_freq = 2447}, 1277 { .hw_value = 9, .center_freq = 2452}, 1278 { .hw_value = 10, .center_freq = 2457}, 1279 { .hw_value = 11, .center_freq = 2462}, 1280 { .hw_value = 12, .center_freq = 2467}, 1281 { .hw_value = 13, .center_freq = 2472}, 1282 }; 1283 1284 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, 1285 struct ieee80211_vif *vif, u16 queue, 1286 const struct ieee80211_tx_queue_params *params) 1287 { 1288 enum wl1251_acx_ps_scheme ps_scheme; 1289 struct wl1251 *wl = hw->priv; 1290 int ret; 1291 1292 mutex_lock(&wl->mutex); 1293 1294 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue); 1295 1296 ret = wl1251_ps_elp_wakeup(wl); 1297 if (ret < 0) 1298 goto out; 1299 1300 /* mac80211 uses units of 32 usec */ 1301 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue), 1302 params->cw_min, params->cw_max, 1303 params->aifs, params->txop * 32); 1304 if (ret < 0) 1305 goto out_sleep; 1306 1307 if (params->uapsd) 1308 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER; 1309 else 1310 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY; 1311 1312 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue), 1313 CHANNEL_TYPE_EDCF, 1314 wl1251_tx_get_queue(queue), ps_scheme, 1315 WL1251_ACX_ACK_POLICY_LEGACY); 1316 if (ret < 0) 1317 goto out_sleep; 1318 1319 out_sleep: 1320 wl1251_ps_elp_sleep(wl); 1321 1322 out: 1323 mutex_unlock(&wl->mutex); 1324 1325 return ret; 1326 } 1327 1328 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx, 1329 struct survey_info *survey) 1330 { 1331 struct wl1251 *wl = hw->priv; 1332 struct ieee80211_conf *conf = &hw->conf; 1333 1334 if (idx != 0) 1335 return -ENOENT; 1336 1337 survey->channel = conf->chandef.chan; 1338 survey->filled = SURVEY_INFO_NOISE_DBM; 1339 survey->noise = wl->noise; 1340 1341 return 0; 1342 } 1343 1344 /* can't be const, mac80211 writes to this */ 1345 static struct ieee80211_supported_band wl1251_band_2ghz = { 1346 .channels = wl1251_channels, 1347 .n_channels = ARRAY_SIZE(wl1251_channels), 1348 .bitrates = wl1251_rates, 1349 .n_bitrates = ARRAY_SIZE(wl1251_rates), 1350 }; 1351 1352 static const struct ieee80211_ops wl1251_ops = { 1353 .start = wl1251_op_start, 1354 .stop = wl1251_op_stop, 1355 .add_interface = wl1251_op_add_interface, 1356 .remove_interface = wl1251_op_remove_interface, 1357 .config = wl1251_op_config, 1358 .prepare_multicast = wl1251_op_prepare_multicast, 1359 .configure_filter = wl1251_op_configure_filter, 1360 .tx = wl1251_op_tx, 1361 .set_key = wl1251_op_set_key, 1362 .hw_scan = wl1251_op_hw_scan, 1363 .bss_info_changed = wl1251_op_bss_info_changed, 1364 .set_rts_threshold = wl1251_op_set_rts_threshold, 1365 .conf_tx = wl1251_op_conf_tx, 1366 .get_survey = wl1251_op_get_survey, 1367 }; 1368 1369 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data) 1370 { 1371 unsigned long timeout; 1372 1373 wl1251_reg_write32(wl, EE_ADDR, offset); 1374 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ); 1375 1376 /* EE_CTL_READ clears when data is ready */ 1377 timeout = jiffies + msecs_to_jiffies(100); 1378 while (1) { 1379 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ)) 1380 break; 1381 1382 if (time_after(jiffies, timeout)) 1383 return -ETIMEDOUT; 1384 1385 msleep(1); 1386 } 1387 1388 *data = wl1251_reg_read32(wl, EE_DATA); 1389 return 0; 1390 } 1391 1392 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset, 1393 u8 *data, size_t len) 1394 { 1395 size_t i; 1396 int ret; 1397 1398 wl1251_reg_write32(wl, EE_START, 0); 1399 1400 for (i = 0; i < len; i++) { 1401 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]); 1402 if (ret < 0) 1403 return ret; 1404 } 1405 1406 return 0; 1407 } 1408 1409 static int wl1251_read_eeprom_mac(struct wl1251 *wl) 1410 { 1411 u8 mac[ETH_ALEN]; 1412 int i, ret; 1413 1414 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE); 1415 1416 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac)); 1417 if (ret < 0) { 1418 wl1251_warning("failed to read MAC address from EEPROM"); 1419 return ret; 1420 } 1421 1422 /* MAC is stored in reverse order */ 1423 for (i = 0; i < ETH_ALEN; i++) 1424 wl->mac_addr[i] = mac[ETH_ALEN - i - 1]; 1425 1426 return 0; 1427 } 1428 1429 #define NVS_OFF_MAC_LEN 0x19 1430 #define NVS_OFF_MAC_ADDR_LO 0x1a 1431 #define NVS_OFF_MAC_ADDR_HI 0x1b 1432 #define NVS_OFF_MAC_DATA 0x1c 1433 1434 static int wl1251_check_nvs_mac(struct wl1251 *wl) 1435 { 1436 if (wl->nvs_len < 0x24) 1437 return -ENODATA; 1438 1439 /* length is 2 and data address is 0x546c (ANDed with 0xfffe) */ 1440 if (wl->nvs[NVS_OFF_MAC_LEN] != 2 || 1441 wl->nvs[NVS_OFF_MAC_ADDR_LO] != 0x6d || 1442 wl->nvs[NVS_OFF_MAC_ADDR_HI] != 0x54) 1443 return -EINVAL; 1444 1445 return 0; 1446 } 1447 1448 static int wl1251_read_nvs_mac(struct wl1251 *wl) 1449 { 1450 u8 mac[ETH_ALEN]; 1451 int i, ret; 1452 1453 ret = wl1251_check_nvs_mac(wl); 1454 if (ret) 1455 return ret; 1456 1457 /* MAC is stored in reverse order */ 1458 for (i = 0; i < ETH_ALEN; i++) 1459 mac[i] = wl->nvs[NVS_OFF_MAC_DATA + ETH_ALEN - i - 1]; 1460 1461 /* 00:00:20:07:03:09 is in example file wl1251-nvs.bin, so invalid */ 1462 if (ether_addr_equal_unaligned(mac, "\x00\x00\x20\x07\x03\x09")) 1463 return -EINVAL; 1464 1465 memcpy(wl->mac_addr, mac, ETH_ALEN); 1466 return 0; 1467 } 1468 1469 static int wl1251_write_nvs_mac(struct wl1251 *wl) 1470 { 1471 int i, ret; 1472 1473 ret = wl1251_check_nvs_mac(wl); 1474 if (ret) 1475 return ret; 1476 1477 /* MAC is stored in reverse order */ 1478 for (i = 0; i < ETH_ALEN; i++) 1479 wl->nvs[NVS_OFF_MAC_DATA + i] = wl->mac_addr[ETH_ALEN - i - 1]; 1480 1481 return 0; 1482 } 1483 1484 static int wl1251_register_hw(struct wl1251 *wl) 1485 { 1486 int ret; 1487 1488 if (wl->mac80211_registered) 1489 return 0; 1490 1491 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 1492 1493 ret = ieee80211_register_hw(wl->hw); 1494 if (ret < 0) { 1495 wl1251_error("unable to register mac80211 hw: %d", ret); 1496 return ret; 1497 } 1498 1499 wl->mac80211_registered = true; 1500 1501 wl1251_notice("loaded"); 1502 1503 return 0; 1504 } 1505 1506 int wl1251_init_ieee80211(struct wl1251 *wl) 1507 { 1508 int ret; 1509 1510 /* The tx descriptor buffer and the TKIP space */ 1511 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc) 1512 + WL1251_TKIP_IV_SPACE; 1513 1514 /* unit us */ 1515 /* FIXME: find a proper value */ 1516 1517 ieee80211_hw_set(wl->hw, SIGNAL_DBM); 1518 ieee80211_hw_set(wl->hw, SUPPORTS_PS); 1519 1520 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1521 BIT(NL80211_IFTYPE_ADHOC); 1522 wl->hw->wiphy->max_scan_ssids = 1; 1523 1524 /* We set max_scan_ie_len to a random value to make wpa_supplicant scans not 1525 * fail, as the driver will the ignore the extra passed IEs anyway 1526 */ 1527 wl->hw->wiphy->max_scan_ie_len = 512; 1528 1529 wl->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wl1251_band_2ghz; 1530 1531 wl->hw->queues = 4; 1532 1533 if (wl->nvs == NULL && !wl->use_eeprom) { 1534 ret = wl1251_fetch_nvs(wl); 1535 if (ret < 0) 1536 goto out; 1537 } 1538 1539 if (wl->use_eeprom) 1540 ret = wl1251_read_eeprom_mac(wl); 1541 else 1542 ret = wl1251_read_nvs_mac(wl); 1543 1544 if (ret == 0 && !is_valid_ether_addr(wl->mac_addr)) 1545 ret = -EINVAL; 1546 1547 if (ret < 0) { 1548 /* 1549 * In case our MAC address is not correctly set, 1550 * we use a random but Nokia MAC. 1551 */ 1552 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf}; 1553 memcpy(wl->mac_addr, nokia_oui, 3); 1554 get_random_bytes(wl->mac_addr + 3, 3); 1555 if (!wl->use_eeprom) 1556 wl1251_write_nvs_mac(wl); 1557 wl1251_warning("MAC address in eeprom or nvs data is not valid"); 1558 wl1251_warning("Setting random MAC address: %pM", wl->mac_addr); 1559 } 1560 1561 ret = wl1251_register_hw(wl); 1562 if (ret) 1563 goto out; 1564 1565 wl1251_debugfs_init(wl); 1566 wl1251_notice("initialized"); 1567 1568 ret = 0; 1569 1570 out: 1571 return ret; 1572 } 1573 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211); 1574 1575 struct ieee80211_hw *wl1251_alloc_hw(void) 1576 { 1577 struct ieee80211_hw *hw; 1578 struct wl1251 *wl; 1579 int i; 1580 1581 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops); 1582 if (!hw) { 1583 wl1251_error("could not alloc ieee80211_hw"); 1584 return ERR_PTR(-ENOMEM); 1585 } 1586 1587 wl = hw->priv; 1588 memset(wl, 0, sizeof(*wl)); 1589 1590 wl->hw = hw; 1591 1592 wl->data_in_count = 0; 1593 1594 skb_queue_head_init(&wl->tx_queue); 1595 1596 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work); 1597 wl->channel = WL1251_DEFAULT_CHANNEL; 1598 wl->monitor_present = false; 1599 wl->joined = false; 1600 wl->scanning = false; 1601 wl->bss_type = MAX_BSS_TYPE; 1602 wl->default_key = 0; 1603 wl->listen_int = 1; 1604 wl->rx_counter = 0; 1605 wl->rx_handled = 0; 1606 wl->rx_current_buffer = 0; 1607 wl->rx_last_id = 0; 1608 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 1609 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 1610 wl->elp = false; 1611 wl->station_mode = STATION_ACTIVE_MODE; 1612 wl->psm_requested = false; 1613 wl->psm_entry_retry = 0; 1614 wl->tx_queue_stopped = false; 1615 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 1616 wl->rssi_thold = 0; 1617 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1618 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1619 wl->vif = NULL; 1620 1621 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) 1622 wl->tx_frames[i] = NULL; 1623 1624 wl->next_tx_complete = 0; 1625 1626 INIT_WORK(&wl->irq_work, wl1251_irq_work); 1627 INIT_WORK(&wl->tx_work, wl1251_tx_work); 1628 1629 wl->state = WL1251_STATE_OFF; 1630 mutex_init(&wl->mutex); 1631 spin_lock_init(&wl->wl_lock); 1632 1633 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE; 1634 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE; 1635 1636 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL); 1637 if (!wl->rx_descriptor) { 1638 wl1251_error("could not allocate memory for rx descriptor"); 1639 ieee80211_free_hw(hw); 1640 return ERR_PTR(-ENOMEM); 1641 } 1642 1643 return hw; 1644 } 1645 EXPORT_SYMBOL_GPL(wl1251_alloc_hw); 1646 1647 int wl1251_free_hw(struct wl1251 *wl) 1648 { 1649 ieee80211_unregister_hw(wl->hw); 1650 1651 wl1251_debugfs_exit(wl); 1652 1653 kfree(wl->target_mem_map); 1654 kfree(wl->data_path); 1655 vfree(wl->fw); 1656 wl->fw = NULL; 1657 kfree(wl->nvs); 1658 wl->nvs = NULL; 1659 1660 kfree(wl->rx_descriptor); 1661 wl->rx_descriptor = NULL; 1662 1663 ieee80211_free_hw(wl->hw); 1664 1665 return 0; 1666 } 1667 EXPORT_SYMBOL_GPL(wl1251_free_hw); 1668 1669 MODULE_DESCRIPTION("TI wl1251 Wireless LAN Driver Core"); 1670 MODULE_LICENSE("GPL"); 1671 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>"); 1672 MODULE_FIRMWARE(WL1251_FW_NAME); 1673 MODULE_FIRMWARE(WL1251_NVS_NAME); 1674