1 /* 2 * This file is part of wl1251 3 * 4 * Copyright (C) 2008-2009 Nokia Corporation 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * version 2 as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 18 * 02110-1301 USA 19 * 20 */ 21 22 #include <linux/module.h> 23 #include <linux/interrupt.h> 24 #include <linux/firmware.h> 25 #include <linux/delay.h> 26 #include <linux/irq.h> 27 #include <linux/crc32.h> 28 #include <linux/etherdevice.h> 29 #include <linux/vmalloc.h> 30 #include <linux/slab.h> 31 #include <linux/netdevice.h> 32 33 #include "wl1251.h" 34 #include "wl12xx_80211.h" 35 #include "reg.h" 36 #include "io.h" 37 #include "cmd.h" 38 #include "event.h" 39 #include "tx.h" 40 #include "rx.h" 41 #include "ps.h" 42 #include "init.h" 43 #include "debugfs.h" 44 #include "boot.h" 45 46 void wl1251_enable_interrupts(struct wl1251 *wl) 47 { 48 wl->if_ops->enable_irq(wl); 49 } 50 51 void wl1251_disable_interrupts(struct wl1251 *wl) 52 { 53 wl->if_ops->disable_irq(wl); 54 } 55 56 static int wl1251_power_off(struct wl1251 *wl) 57 { 58 return wl->if_ops->power(wl, false); 59 } 60 61 static int wl1251_power_on(struct wl1251 *wl) 62 { 63 return wl->if_ops->power(wl, true); 64 } 65 66 static int wl1251_fetch_firmware(struct wl1251 *wl) 67 { 68 const struct firmware *fw; 69 struct device *dev = wiphy_dev(wl->hw->wiphy); 70 int ret; 71 72 ret = request_firmware(&fw, WL1251_FW_NAME, dev); 73 74 if (ret < 0) { 75 wl1251_error("could not get firmware: %d", ret); 76 return ret; 77 } 78 79 if (fw->size % 4) { 80 wl1251_error("firmware size is not multiple of 32 bits: %zu", 81 fw->size); 82 ret = -EILSEQ; 83 goto out; 84 } 85 86 wl->fw_len = fw->size; 87 wl->fw = vmalloc(wl->fw_len); 88 89 if (!wl->fw) { 90 wl1251_error("could not allocate memory for the firmware"); 91 ret = -ENOMEM; 92 goto out; 93 } 94 95 memcpy(wl->fw, fw->data, wl->fw_len); 96 97 ret = 0; 98 99 out: 100 release_firmware(fw); 101 102 return ret; 103 } 104 105 static int wl1251_fetch_nvs(struct wl1251 *wl) 106 { 107 const struct firmware *fw; 108 struct device *dev = wiphy_dev(wl->hw->wiphy); 109 int ret; 110 111 ret = request_firmware(&fw, WL1251_NVS_NAME, dev); 112 113 if (ret < 0) { 114 wl1251_error("could not get nvs file: %d", ret); 115 return ret; 116 } 117 118 if (fw->size % 4) { 119 wl1251_error("nvs size is not multiple of 32 bits: %zu", 120 fw->size); 121 ret = -EILSEQ; 122 goto out; 123 } 124 125 wl->nvs_len = fw->size; 126 wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL); 127 128 if (!wl->nvs) { 129 wl1251_error("could not allocate memory for the nvs file"); 130 ret = -ENOMEM; 131 goto out; 132 } 133 134 ret = 0; 135 136 out: 137 release_firmware(fw); 138 139 return ret; 140 } 141 142 static void wl1251_fw_wakeup(struct wl1251 *wl) 143 { 144 u32 elp_reg; 145 146 elp_reg = ELPCTRL_WAKE_UP; 147 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg); 148 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR); 149 150 if (!(elp_reg & ELPCTRL_WLAN_READY)) 151 wl1251_warning("WLAN not ready"); 152 } 153 154 static int wl1251_chip_wakeup(struct wl1251 *wl) 155 { 156 int ret; 157 158 ret = wl1251_power_on(wl); 159 if (ret < 0) 160 return ret; 161 162 msleep(WL1251_POWER_ON_SLEEP); 163 wl->if_ops->reset(wl); 164 165 /* We don't need a real memory partition here, because we only want 166 * to use the registers at this point. */ 167 wl1251_set_partition(wl, 168 0x00000000, 169 0x00000000, 170 REGISTERS_BASE, 171 REGISTERS_DOWN_SIZE); 172 173 /* ELP module wake up */ 174 wl1251_fw_wakeup(wl); 175 176 /* whal_FwCtrl_BootSm() */ 177 178 /* 0. read chip id from CHIP_ID */ 179 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B); 180 181 /* 1. check if chip id is valid */ 182 183 switch (wl->chip_id) { 184 case CHIP_ID_1251_PG12: 185 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)", 186 wl->chip_id); 187 break; 188 case CHIP_ID_1251_PG11: 189 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)", 190 wl->chip_id); 191 break; 192 case CHIP_ID_1251_PG10: 193 default: 194 wl1251_error("unsupported chip id: 0x%x", wl->chip_id); 195 ret = -ENODEV; 196 goto out; 197 } 198 199 if (wl->fw == NULL) { 200 ret = wl1251_fetch_firmware(wl); 201 if (ret < 0) 202 goto out; 203 } 204 205 if (wl->nvs == NULL && !wl->use_eeprom) { 206 /* No NVS from netlink, try to get it from the filesystem */ 207 ret = wl1251_fetch_nvs(wl); 208 if (ret < 0) 209 goto out; 210 } 211 212 out: 213 return ret; 214 } 215 216 #define WL1251_IRQ_LOOP_COUNT 10 217 static void wl1251_irq_work(struct work_struct *work) 218 { 219 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT; 220 struct wl1251 *wl = 221 container_of(work, struct wl1251, irq_work); 222 int ret; 223 224 mutex_lock(&wl->mutex); 225 226 wl1251_debug(DEBUG_IRQ, "IRQ work"); 227 228 if (wl->state == WL1251_STATE_OFF) 229 goto out; 230 231 ret = wl1251_ps_elp_wakeup(wl); 232 if (ret < 0) 233 goto out; 234 235 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL); 236 237 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); 238 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr); 239 240 do { 241 if (wl->data_path) { 242 wl->rx_counter = wl1251_mem_read32( 243 wl, wl->data_path->rx_control_addr); 244 245 /* We handle a frmware bug here */ 246 switch ((wl->rx_counter - wl->rx_handled) & 0xf) { 247 case 0: 248 wl1251_debug(DEBUG_IRQ, 249 "RX: FW and host in sync"); 250 intr &= ~WL1251_ACX_INTR_RX0_DATA; 251 intr &= ~WL1251_ACX_INTR_RX1_DATA; 252 break; 253 case 1: 254 wl1251_debug(DEBUG_IRQ, "RX: FW +1"); 255 intr |= WL1251_ACX_INTR_RX0_DATA; 256 intr &= ~WL1251_ACX_INTR_RX1_DATA; 257 break; 258 case 2: 259 wl1251_debug(DEBUG_IRQ, "RX: FW +2"); 260 intr |= WL1251_ACX_INTR_RX0_DATA; 261 intr |= WL1251_ACX_INTR_RX1_DATA; 262 break; 263 default: 264 wl1251_warning( 265 "RX: FW and host out of sync: %d", 266 wl->rx_counter - wl->rx_handled); 267 break; 268 } 269 270 wl->rx_handled = wl->rx_counter; 271 272 wl1251_debug(DEBUG_IRQ, "RX counter: %d", 273 wl->rx_counter); 274 } 275 276 intr &= wl->intr_mask; 277 278 if (intr == 0) { 279 wl1251_debug(DEBUG_IRQ, "INTR is 0"); 280 goto out_sleep; 281 } 282 283 if (intr & WL1251_ACX_INTR_RX0_DATA) { 284 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA"); 285 wl1251_rx(wl); 286 } 287 288 if (intr & WL1251_ACX_INTR_RX1_DATA) { 289 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA"); 290 wl1251_rx(wl); 291 } 292 293 if (intr & WL1251_ACX_INTR_TX_RESULT) { 294 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT"); 295 wl1251_tx_complete(wl); 296 } 297 298 if (intr & WL1251_ACX_INTR_EVENT_A) { 299 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A"); 300 wl1251_event_handle(wl, 0); 301 } 302 303 if (intr & WL1251_ACX_INTR_EVENT_B) { 304 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B"); 305 wl1251_event_handle(wl, 1); 306 } 307 308 if (intr & WL1251_ACX_INTR_INIT_COMPLETE) 309 wl1251_debug(DEBUG_IRQ, 310 "WL1251_ACX_INTR_INIT_COMPLETE"); 311 312 if (--ctr == 0) 313 break; 314 315 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); 316 } while (intr); 317 318 out_sleep: 319 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask)); 320 wl1251_ps_elp_sleep(wl); 321 322 out: 323 mutex_unlock(&wl->mutex); 324 } 325 326 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel, 327 u16 beacon_interval, u8 dtim_period) 328 { 329 int ret; 330 331 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE, 332 DEFAULT_HW_GEN_MODULATION_TYPE, 333 wl->tx_mgmt_frm_rate, 334 wl->tx_mgmt_frm_mod); 335 if (ret < 0) 336 goto out; 337 338 /* 339 * Join command applies filters, and if we are not associated, 340 * BSSID filter must be disabled for association to work. 341 */ 342 if (is_zero_ether_addr(wl->bssid)) 343 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 344 345 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval, 346 dtim_period); 347 if (ret < 0) 348 goto out; 349 350 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100); 351 if (ret < 0) 352 wl1251_warning("join timeout"); 353 354 out: 355 return ret; 356 } 357 358 static void wl1251_op_tx(struct ieee80211_hw *hw, 359 struct ieee80211_tx_control *control, 360 struct sk_buff *skb) 361 { 362 struct wl1251 *wl = hw->priv; 363 unsigned long flags; 364 365 skb_queue_tail(&wl->tx_queue, skb); 366 367 /* 368 * The chip specific setup must run before the first TX packet - 369 * before that, the tx_work will not be initialized! 370 */ 371 372 ieee80211_queue_work(wl->hw, &wl->tx_work); 373 374 /* 375 * The workqueue is slow to process the tx_queue and we need stop 376 * the queue here, otherwise the queue will get too long. 377 */ 378 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) { 379 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues"); 380 381 spin_lock_irqsave(&wl->wl_lock, flags); 382 ieee80211_stop_queues(wl->hw); 383 wl->tx_queue_stopped = true; 384 spin_unlock_irqrestore(&wl->wl_lock, flags); 385 } 386 } 387 388 static int wl1251_op_start(struct ieee80211_hw *hw) 389 { 390 struct wl1251 *wl = hw->priv; 391 struct wiphy *wiphy = hw->wiphy; 392 int ret = 0; 393 394 wl1251_debug(DEBUG_MAC80211, "mac80211 start"); 395 396 mutex_lock(&wl->mutex); 397 398 if (wl->state != WL1251_STATE_OFF) { 399 wl1251_error("cannot start because not in off state: %d", 400 wl->state); 401 ret = -EBUSY; 402 goto out; 403 } 404 405 ret = wl1251_chip_wakeup(wl); 406 if (ret < 0) 407 goto out; 408 409 ret = wl1251_boot(wl); 410 if (ret < 0) 411 goto out; 412 413 ret = wl1251_hw_init(wl); 414 if (ret < 0) 415 goto out; 416 417 ret = wl1251_acx_station_id(wl); 418 if (ret < 0) 419 goto out; 420 421 wl->state = WL1251_STATE_ON; 422 423 wl1251_info("firmware booted (%s)", wl->fw_ver); 424 425 /* update hw/fw version info in wiphy struct */ 426 wiphy->hw_version = wl->chip_id; 427 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version)); 428 429 out: 430 if (ret < 0) 431 wl1251_power_off(wl); 432 433 mutex_unlock(&wl->mutex); 434 435 return ret; 436 } 437 438 static void wl1251_op_stop(struct ieee80211_hw *hw) 439 { 440 struct wl1251 *wl = hw->priv; 441 442 wl1251_info("down"); 443 444 wl1251_debug(DEBUG_MAC80211, "mac80211 stop"); 445 446 mutex_lock(&wl->mutex); 447 448 WARN_ON(wl->state != WL1251_STATE_ON); 449 450 if (wl->scanning) { 451 ieee80211_scan_completed(wl->hw, true); 452 wl->scanning = false; 453 } 454 455 wl->state = WL1251_STATE_OFF; 456 457 wl1251_disable_interrupts(wl); 458 459 mutex_unlock(&wl->mutex); 460 461 cancel_work_sync(&wl->irq_work); 462 cancel_work_sync(&wl->tx_work); 463 cancel_delayed_work_sync(&wl->elp_work); 464 465 mutex_lock(&wl->mutex); 466 467 /* let's notify MAC80211 about the remaining pending TX frames */ 468 wl1251_tx_flush(wl); 469 wl1251_power_off(wl); 470 471 eth_zero_addr(wl->bssid); 472 wl->listen_int = 1; 473 wl->bss_type = MAX_BSS_TYPE; 474 475 wl->data_in_count = 0; 476 wl->rx_counter = 0; 477 wl->rx_handled = 0; 478 wl->rx_current_buffer = 0; 479 wl->rx_last_id = 0; 480 wl->next_tx_complete = 0; 481 wl->elp = false; 482 wl->station_mode = STATION_ACTIVE_MODE; 483 wl->psm_entry_retry = 0; 484 wl->tx_queue_stopped = false; 485 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 486 wl->rssi_thold = 0; 487 wl->channel = WL1251_DEFAULT_CHANNEL; 488 wl->monitor_present = false; 489 wl->joined = false; 490 491 wl1251_debugfs_reset(wl); 492 493 mutex_unlock(&wl->mutex); 494 } 495 496 static int wl1251_op_add_interface(struct ieee80211_hw *hw, 497 struct ieee80211_vif *vif) 498 { 499 struct wl1251 *wl = hw->priv; 500 int ret = 0; 501 502 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 503 IEEE80211_VIF_SUPPORTS_UAPSD | 504 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 505 506 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM", 507 vif->type, vif->addr); 508 509 mutex_lock(&wl->mutex); 510 if (wl->vif) { 511 ret = -EBUSY; 512 goto out; 513 } 514 515 wl->vif = vif; 516 517 switch (vif->type) { 518 case NL80211_IFTYPE_STATION: 519 wl->bss_type = BSS_TYPE_STA_BSS; 520 break; 521 case NL80211_IFTYPE_ADHOC: 522 wl->bss_type = BSS_TYPE_IBSS; 523 break; 524 default: 525 ret = -EOPNOTSUPP; 526 goto out; 527 } 528 529 if (!ether_addr_equal_unaligned(wl->mac_addr, vif->addr)) { 530 memcpy(wl->mac_addr, vif->addr, ETH_ALEN); 531 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 532 ret = wl1251_acx_station_id(wl); 533 if (ret < 0) 534 goto out; 535 } 536 537 out: 538 mutex_unlock(&wl->mutex); 539 return ret; 540 } 541 542 static void wl1251_op_remove_interface(struct ieee80211_hw *hw, 543 struct ieee80211_vif *vif) 544 { 545 struct wl1251 *wl = hw->priv; 546 547 mutex_lock(&wl->mutex); 548 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface"); 549 wl->vif = NULL; 550 eth_zero_addr(wl->bssid); 551 mutex_unlock(&wl->mutex); 552 } 553 554 static int wl1251_build_null_data(struct wl1251 *wl) 555 { 556 struct sk_buff *skb = NULL; 557 int size; 558 void *ptr; 559 int ret = -ENOMEM; 560 561 if (wl->bss_type == BSS_TYPE_IBSS) { 562 size = sizeof(struct wl12xx_null_data_template); 563 ptr = NULL; 564 } else { 565 skb = ieee80211_nullfunc_get(wl->hw, wl->vif); 566 if (!skb) 567 goto out; 568 size = skb->len; 569 ptr = skb->data; 570 } 571 572 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA, ptr, size); 573 574 out: 575 dev_kfree_skb(skb); 576 if (ret) 577 wl1251_warning("cmd buld null data failed: %d", ret); 578 579 return ret; 580 } 581 582 static int wl1251_build_qos_null_data(struct wl1251 *wl) 583 { 584 struct ieee80211_qos_hdr template; 585 586 memset(&template, 0, sizeof(template)); 587 588 memcpy(template.addr1, wl->bssid, ETH_ALEN); 589 memcpy(template.addr2, wl->mac_addr, ETH_ALEN); 590 memcpy(template.addr3, wl->bssid, ETH_ALEN); 591 592 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | 593 IEEE80211_STYPE_QOS_NULLFUNC | 594 IEEE80211_FCTL_TODS); 595 596 /* FIXME: not sure what priority to use here */ 597 template.qos_ctrl = cpu_to_le16(0); 598 599 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template, 600 sizeof(template)); 601 } 602 603 static bool wl1251_can_do_pm(struct ieee80211_conf *conf, struct wl1251 *wl) 604 { 605 return (conf->flags & IEEE80211_CONF_PS) && !wl->monitor_present; 606 } 607 608 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed) 609 { 610 struct wl1251 *wl = hw->priv; 611 struct ieee80211_conf *conf = &hw->conf; 612 int channel, ret = 0; 613 614 channel = ieee80211_frequency_to_channel( 615 conf->chandef.chan->center_freq); 616 617 wl1251_debug(DEBUG_MAC80211, 618 "mac80211 config ch %d monitor %s psm %s power %d", 619 channel, 620 conf->flags & IEEE80211_CONF_MONITOR ? "on" : "off", 621 conf->flags & IEEE80211_CONF_PS ? "on" : "off", 622 conf->power_level); 623 624 mutex_lock(&wl->mutex); 625 626 ret = wl1251_ps_elp_wakeup(wl); 627 if (ret < 0) 628 goto out; 629 630 if (changed & IEEE80211_CONF_CHANGE_MONITOR) { 631 u32 mode; 632 633 if (conf->flags & IEEE80211_CONF_MONITOR) { 634 wl->monitor_present = true; 635 mode = DF_SNIFF_MODE_ENABLE | DF_ENCRYPTION_DISABLE; 636 } else { 637 wl->monitor_present = false; 638 mode = 0; 639 } 640 641 ret = wl1251_acx_feature_cfg(wl, mode); 642 if (ret < 0) 643 goto out_sleep; 644 } 645 646 if (channel != wl->channel) { 647 wl->channel = channel; 648 649 /* 650 * Use ENABLE_RX command for channel switching when no 651 * interface is present (monitor mode only). 652 * This leaves the tx path disabled in firmware, whereas 653 * the usual JOIN command seems to transmit some frames 654 * at firmware level. 655 */ 656 if (wl->vif == NULL) { 657 wl->joined = false; 658 ret = wl1251_cmd_data_path_rx(wl, wl->channel, 1); 659 } else { 660 ret = wl1251_join(wl, wl->bss_type, wl->channel, 661 wl->beacon_int, wl->dtim_period); 662 } 663 if (ret < 0) 664 goto out_sleep; 665 } 666 667 if (wl1251_can_do_pm(conf, wl) && !wl->psm_requested) { 668 wl1251_debug(DEBUG_PSM, "psm enabled"); 669 670 wl->psm_requested = true; 671 672 wl->dtim_period = conf->ps_dtim_period; 673 674 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int, 675 wl->dtim_period); 676 677 /* 678 * mac80211 enables PSM only if we're already associated. 679 */ 680 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE); 681 if (ret < 0) 682 goto out_sleep; 683 } else if (!wl1251_can_do_pm(conf, wl) && wl->psm_requested) { 684 wl1251_debug(DEBUG_PSM, "psm disabled"); 685 686 wl->psm_requested = false; 687 688 if (wl->station_mode != STATION_ACTIVE_MODE) { 689 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 690 if (ret < 0) 691 goto out_sleep; 692 } 693 } 694 695 if (changed & IEEE80211_CONF_CHANGE_IDLE && !wl->scanning) { 696 if (conf->flags & IEEE80211_CONF_IDLE) { 697 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 698 if (ret < 0) 699 goto out_sleep; 700 } else { 701 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 702 if (ret < 0) 703 goto out_sleep; 704 ret = wl1251_join(wl, wl->bss_type, wl->channel, 705 wl->beacon_int, wl->dtim_period); 706 if (ret < 0) 707 goto out_sleep; 708 } 709 } 710 711 if (conf->power_level != wl->power_level) { 712 ret = wl1251_acx_tx_power(wl, conf->power_level); 713 if (ret < 0) 714 goto out_sleep; 715 716 wl->power_level = conf->power_level; 717 } 718 719 out_sleep: 720 wl1251_ps_elp_sleep(wl); 721 722 out: 723 mutex_unlock(&wl->mutex); 724 725 return ret; 726 } 727 728 struct wl1251_filter_params { 729 bool enabled; 730 int mc_list_length; 731 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN]; 732 }; 733 734 static u64 wl1251_op_prepare_multicast(struct ieee80211_hw *hw, 735 struct netdev_hw_addr_list *mc_list) 736 { 737 struct wl1251_filter_params *fp; 738 struct netdev_hw_addr *ha; 739 struct wl1251 *wl = hw->priv; 740 741 if (unlikely(wl->state == WL1251_STATE_OFF)) 742 return 0; 743 744 fp = kzalloc(sizeof(*fp), GFP_ATOMIC); 745 if (!fp) { 746 wl1251_error("Out of memory setting filters."); 747 return 0; 748 } 749 750 /* update multicast filtering parameters */ 751 fp->mc_list_length = 0; 752 if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) { 753 fp->enabled = false; 754 } else { 755 fp->enabled = true; 756 netdev_hw_addr_list_for_each(ha, mc_list) { 757 memcpy(fp->mc_list[fp->mc_list_length], 758 ha->addr, ETH_ALEN); 759 fp->mc_list_length++; 760 } 761 } 762 763 return (u64)(unsigned long)fp; 764 } 765 766 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \ 767 FIF_ALLMULTI | \ 768 FIF_FCSFAIL | \ 769 FIF_BCN_PRBRESP_PROMISC | \ 770 FIF_CONTROL | \ 771 FIF_OTHER_BSS | \ 772 FIF_PROBE_REQ) 773 774 static void wl1251_op_configure_filter(struct ieee80211_hw *hw, 775 unsigned int changed, 776 unsigned int *total, u64 multicast) 777 { 778 struct wl1251_filter_params *fp = (void *)(unsigned long)multicast; 779 struct wl1251 *wl = hw->priv; 780 int ret; 781 782 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter"); 783 784 *total &= WL1251_SUPPORTED_FILTERS; 785 changed &= WL1251_SUPPORTED_FILTERS; 786 787 if (changed == 0) { 788 /* no filters which we support changed */ 789 kfree(fp); 790 return; 791 } 792 793 mutex_lock(&wl->mutex); 794 795 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 796 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 797 798 if (*total & FIF_PROMISC_IN_BSS) { 799 wl->rx_config |= CFG_BSSID_FILTER_EN; 800 wl->rx_config |= CFG_RX_ALL_GOOD; 801 } 802 if (*total & FIF_ALLMULTI) 803 /* 804 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive 805 * all multicast frames 806 */ 807 wl->rx_config &= ~CFG_MC_FILTER_EN; 808 if (*total & FIF_FCSFAIL) 809 wl->rx_filter |= CFG_RX_FCS_ERROR; 810 if (*total & FIF_BCN_PRBRESP_PROMISC) { 811 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 812 wl->rx_config &= ~CFG_SSID_FILTER_EN; 813 } 814 if (*total & FIF_CONTROL) 815 wl->rx_filter |= CFG_RX_CTL_EN; 816 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid)) 817 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 818 if (*total & FIF_PROBE_REQ) 819 wl->rx_filter |= CFG_RX_PREQ_EN; 820 821 if (wl->state == WL1251_STATE_OFF) 822 goto out; 823 824 ret = wl1251_ps_elp_wakeup(wl); 825 if (ret < 0) 826 goto out; 827 828 if (*total & FIF_ALLMULTI || *total & FIF_PROMISC_IN_BSS) 829 ret = wl1251_acx_group_address_tbl(wl, false, NULL, 0); 830 else if (fp) 831 ret = wl1251_acx_group_address_tbl(wl, fp->enabled, 832 fp->mc_list, 833 fp->mc_list_length); 834 if (ret < 0) 835 goto out; 836 837 /* send filters to firmware */ 838 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter); 839 840 wl1251_ps_elp_sleep(wl); 841 842 out: 843 mutex_unlock(&wl->mutex); 844 kfree(fp); 845 } 846 847 /* HW encryption */ 848 static int wl1251_set_key_type(struct wl1251 *wl, 849 struct wl1251_cmd_set_keys *key, 850 enum set_key_cmd cmd, 851 struct ieee80211_key_conf *mac80211_key, 852 const u8 *addr) 853 { 854 switch (mac80211_key->cipher) { 855 case WLAN_CIPHER_SUITE_WEP40: 856 case WLAN_CIPHER_SUITE_WEP104: 857 if (is_broadcast_ether_addr(addr)) 858 key->key_type = KEY_WEP_DEFAULT; 859 else 860 key->key_type = KEY_WEP_ADDR; 861 862 mac80211_key->hw_key_idx = mac80211_key->keyidx; 863 break; 864 case WLAN_CIPHER_SUITE_TKIP: 865 if (is_broadcast_ether_addr(addr)) 866 key->key_type = KEY_TKIP_MIC_GROUP; 867 else 868 key->key_type = KEY_TKIP_MIC_PAIRWISE; 869 870 mac80211_key->hw_key_idx = mac80211_key->keyidx; 871 break; 872 case WLAN_CIPHER_SUITE_CCMP: 873 if (is_broadcast_ether_addr(addr)) 874 key->key_type = KEY_AES_GROUP; 875 else 876 key->key_type = KEY_AES_PAIRWISE; 877 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 878 break; 879 default: 880 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher); 881 return -EOPNOTSUPP; 882 } 883 884 return 0; 885 } 886 887 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 888 struct ieee80211_vif *vif, 889 struct ieee80211_sta *sta, 890 struct ieee80211_key_conf *key) 891 { 892 struct wl1251 *wl = hw->priv; 893 struct wl1251_cmd_set_keys *wl_cmd; 894 const u8 *addr; 895 int ret; 896 897 static const u8 bcast_addr[ETH_ALEN] = 898 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 899 900 wl1251_debug(DEBUG_MAC80211, "mac80211 set key"); 901 902 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL); 903 if (!wl_cmd) { 904 ret = -ENOMEM; 905 goto out; 906 } 907 908 addr = sta ? sta->addr : bcast_addr; 909 910 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd); 911 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN); 912 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x", 913 key->cipher, key->keyidx, key->keylen, key->flags); 914 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen); 915 916 if (is_zero_ether_addr(addr)) { 917 /* We dont support TX only encryption */ 918 ret = -EOPNOTSUPP; 919 goto out; 920 } 921 922 mutex_lock(&wl->mutex); 923 924 switch (cmd) { 925 case SET_KEY: 926 if (wl->monitor_present) { 927 ret = -EOPNOTSUPP; 928 goto out_unlock; 929 } 930 wl_cmd->key_action = KEY_ADD_OR_REPLACE; 931 break; 932 case DISABLE_KEY: 933 wl_cmd->key_action = KEY_REMOVE; 934 break; 935 default: 936 wl1251_error("Unsupported key cmd 0x%x", cmd); 937 break; 938 } 939 940 ret = wl1251_ps_elp_wakeup(wl); 941 if (ret < 0) 942 goto out_unlock; 943 944 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr); 945 if (ret < 0) { 946 wl1251_error("Set KEY type failed"); 947 goto out_sleep; 948 } 949 950 if (wl_cmd->key_type != KEY_WEP_DEFAULT) 951 memcpy(wl_cmd->addr, addr, ETH_ALEN); 952 953 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) || 954 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) { 955 /* 956 * We get the key in the following form: 957 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes) 958 * but the target is expecting: 959 * TKIP - RX MIC - TX MIC 960 */ 961 memcpy(wl_cmd->key, key->key, 16); 962 memcpy(wl_cmd->key + 16, key->key + 24, 8); 963 memcpy(wl_cmd->key + 24, key->key + 16, 8); 964 965 } else { 966 memcpy(wl_cmd->key, key->key, key->keylen); 967 } 968 wl_cmd->key_size = key->keylen; 969 970 wl_cmd->id = key->keyidx; 971 wl_cmd->ssid_profile = 0; 972 973 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd)); 974 975 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd)); 976 if (ret < 0) { 977 wl1251_warning("could not set keys"); 978 goto out_sleep; 979 } 980 981 out_sleep: 982 wl1251_ps_elp_sleep(wl); 983 984 out_unlock: 985 mutex_unlock(&wl->mutex); 986 987 out: 988 kfree(wl_cmd); 989 990 return ret; 991 } 992 993 static int wl1251_op_hw_scan(struct ieee80211_hw *hw, 994 struct ieee80211_vif *vif, 995 struct ieee80211_scan_request *hw_req) 996 { 997 struct cfg80211_scan_request *req = &hw_req->req; 998 struct wl1251 *wl = hw->priv; 999 struct sk_buff *skb; 1000 size_t ssid_len = 0; 1001 u8 *ssid = NULL; 1002 int ret; 1003 1004 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan"); 1005 1006 if (req->n_ssids) { 1007 ssid = req->ssids[0].ssid; 1008 ssid_len = req->ssids[0].ssid_len; 1009 } 1010 1011 mutex_lock(&wl->mutex); 1012 1013 if (wl->scanning) { 1014 wl1251_debug(DEBUG_SCAN, "scan already in progress"); 1015 ret = -EINVAL; 1016 goto out; 1017 } 1018 1019 ret = wl1251_ps_elp_wakeup(wl); 1020 if (ret < 0) 1021 goto out; 1022 1023 if (hw->conf.flags & IEEE80211_CONF_IDLE) { 1024 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 1025 if (ret < 0) 1026 goto out_sleep; 1027 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1028 wl->beacon_int, wl->dtim_period); 1029 if (ret < 0) 1030 goto out_sleep; 1031 } 1032 1033 skb = ieee80211_probereq_get(wl->hw, wl->vif->addr, ssid, ssid_len, 1034 req->ie_len); 1035 if (!skb) { 1036 ret = -ENOMEM; 1037 goto out_idle; 1038 } 1039 if (req->ie_len) 1040 memcpy(skb_put(skb, req->ie_len), req->ie, req->ie_len); 1041 1042 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data, 1043 skb->len); 1044 dev_kfree_skb(skb); 1045 if (ret < 0) 1046 goto out_idle; 1047 1048 ret = wl1251_cmd_trigger_scan_to(wl, 0); 1049 if (ret < 0) 1050 goto out_idle; 1051 1052 wl->scanning = true; 1053 1054 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels, 1055 req->n_channels, WL1251_SCAN_NUM_PROBES); 1056 if (ret < 0) { 1057 wl1251_debug(DEBUG_SCAN, "scan failed %d", ret); 1058 wl->scanning = false; 1059 goto out_idle; 1060 } 1061 goto out_sleep; 1062 1063 out_idle: 1064 if (hw->conf.flags & IEEE80211_CONF_IDLE) 1065 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 1066 out_sleep: 1067 wl1251_ps_elp_sleep(wl); 1068 1069 out: 1070 mutex_unlock(&wl->mutex); 1071 1072 return ret; 1073 } 1074 1075 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 1076 { 1077 struct wl1251 *wl = hw->priv; 1078 int ret; 1079 1080 mutex_lock(&wl->mutex); 1081 1082 ret = wl1251_ps_elp_wakeup(wl); 1083 if (ret < 0) 1084 goto out; 1085 1086 ret = wl1251_acx_rts_threshold(wl, (u16) value); 1087 if (ret < 0) 1088 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret); 1089 1090 wl1251_ps_elp_sleep(wl); 1091 1092 out: 1093 mutex_unlock(&wl->mutex); 1094 1095 return ret; 1096 } 1097 1098 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw, 1099 struct ieee80211_vif *vif, 1100 struct ieee80211_bss_conf *bss_conf, 1101 u32 changed) 1102 { 1103 struct wl1251 *wl = hw->priv; 1104 struct sk_buff *beacon, *skb; 1105 bool enable; 1106 int ret; 1107 1108 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed"); 1109 1110 mutex_lock(&wl->mutex); 1111 1112 ret = wl1251_ps_elp_wakeup(wl); 1113 if (ret < 0) 1114 goto out; 1115 1116 if (changed & BSS_CHANGED_CQM) { 1117 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold, 1118 WL1251_DEFAULT_LOW_RSSI_WEIGHT, 1119 WL1251_DEFAULT_LOW_RSSI_DEPTH, 1120 WL1251_ACX_LOW_RSSI_TYPE_EDGE); 1121 if (ret < 0) 1122 goto out; 1123 wl->rssi_thold = bss_conf->cqm_rssi_thold; 1124 } 1125 1126 if ((changed & BSS_CHANGED_BSSID) && 1127 memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) { 1128 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN); 1129 1130 if (!is_zero_ether_addr(wl->bssid)) { 1131 ret = wl1251_build_null_data(wl); 1132 if (ret < 0) 1133 goto out_sleep; 1134 1135 ret = wl1251_build_qos_null_data(wl); 1136 if (ret < 0) 1137 goto out_sleep; 1138 1139 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1140 wl->beacon_int, wl->dtim_period); 1141 if (ret < 0) 1142 goto out_sleep; 1143 } 1144 } 1145 1146 if (changed & BSS_CHANGED_ASSOC) { 1147 if (bss_conf->assoc) { 1148 wl->beacon_int = bss_conf->beacon_int; 1149 1150 skb = ieee80211_pspoll_get(wl->hw, wl->vif); 1151 if (!skb) 1152 goto out_sleep; 1153 1154 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL, 1155 skb->data, 1156 skb->len); 1157 dev_kfree_skb(skb); 1158 if (ret < 0) 1159 goto out_sleep; 1160 1161 ret = wl1251_acx_aid(wl, bss_conf->aid); 1162 if (ret < 0) 1163 goto out_sleep; 1164 } else { 1165 /* use defaults when not associated */ 1166 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1167 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1168 } 1169 } 1170 if (changed & BSS_CHANGED_ERP_SLOT) { 1171 if (bss_conf->use_short_slot) 1172 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT); 1173 else 1174 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG); 1175 if (ret < 0) { 1176 wl1251_warning("Set slot time failed %d", ret); 1177 goto out_sleep; 1178 } 1179 } 1180 1181 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 1182 if (bss_conf->use_short_preamble) 1183 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT); 1184 else 1185 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG); 1186 } 1187 1188 if (changed & BSS_CHANGED_ERP_CTS_PROT) { 1189 if (bss_conf->use_cts_prot) 1190 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE); 1191 else 1192 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE); 1193 if (ret < 0) { 1194 wl1251_warning("Set ctsprotect failed %d", ret); 1195 goto out_sleep; 1196 } 1197 } 1198 1199 if (changed & BSS_CHANGED_ARP_FILTER) { 1200 __be32 addr = bss_conf->arp_addr_list[0]; 1201 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS); 1202 1203 enable = bss_conf->arp_addr_cnt == 1 && bss_conf->assoc; 1204 wl1251_acx_arp_ip_filter(wl, enable, addr); 1205 1206 if (ret < 0) 1207 goto out_sleep; 1208 } 1209 1210 if (changed & BSS_CHANGED_BEACON) { 1211 beacon = ieee80211_beacon_get(hw, vif); 1212 if (!beacon) 1213 goto out_sleep; 1214 1215 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data, 1216 beacon->len); 1217 1218 if (ret < 0) { 1219 dev_kfree_skb(beacon); 1220 goto out_sleep; 1221 } 1222 1223 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data, 1224 beacon->len); 1225 1226 dev_kfree_skb(beacon); 1227 1228 if (ret < 0) 1229 goto out_sleep; 1230 1231 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1232 wl->beacon_int, wl->dtim_period); 1233 1234 if (ret < 0) 1235 goto out_sleep; 1236 } 1237 1238 out_sleep: 1239 wl1251_ps_elp_sleep(wl); 1240 1241 out: 1242 mutex_unlock(&wl->mutex); 1243 } 1244 1245 1246 /* can't be const, mac80211 writes to this */ 1247 static struct ieee80211_rate wl1251_rates[] = { 1248 { .bitrate = 10, 1249 .hw_value = 0x1, 1250 .hw_value_short = 0x1, }, 1251 { .bitrate = 20, 1252 .hw_value = 0x2, 1253 .hw_value_short = 0x2, 1254 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1255 { .bitrate = 55, 1256 .hw_value = 0x4, 1257 .hw_value_short = 0x4, 1258 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1259 { .bitrate = 110, 1260 .hw_value = 0x20, 1261 .hw_value_short = 0x20, 1262 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1263 { .bitrate = 60, 1264 .hw_value = 0x8, 1265 .hw_value_short = 0x8, }, 1266 { .bitrate = 90, 1267 .hw_value = 0x10, 1268 .hw_value_short = 0x10, }, 1269 { .bitrate = 120, 1270 .hw_value = 0x40, 1271 .hw_value_short = 0x40, }, 1272 { .bitrate = 180, 1273 .hw_value = 0x80, 1274 .hw_value_short = 0x80, }, 1275 { .bitrate = 240, 1276 .hw_value = 0x200, 1277 .hw_value_short = 0x200, }, 1278 { .bitrate = 360, 1279 .hw_value = 0x400, 1280 .hw_value_short = 0x400, }, 1281 { .bitrate = 480, 1282 .hw_value = 0x800, 1283 .hw_value_short = 0x800, }, 1284 { .bitrate = 540, 1285 .hw_value = 0x1000, 1286 .hw_value_short = 0x1000, }, 1287 }; 1288 1289 /* can't be const, mac80211 writes to this */ 1290 static struct ieee80211_channel wl1251_channels[] = { 1291 { .hw_value = 1, .center_freq = 2412}, 1292 { .hw_value = 2, .center_freq = 2417}, 1293 { .hw_value = 3, .center_freq = 2422}, 1294 { .hw_value = 4, .center_freq = 2427}, 1295 { .hw_value = 5, .center_freq = 2432}, 1296 { .hw_value = 6, .center_freq = 2437}, 1297 { .hw_value = 7, .center_freq = 2442}, 1298 { .hw_value = 8, .center_freq = 2447}, 1299 { .hw_value = 9, .center_freq = 2452}, 1300 { .hw_value = 10, .center_freq = 2457}, 1301 { .hw_value = 11, .center_freq = 2462}, 1302 { .hw_value = 12, .center_freq = 2467}, 1303 { .hw_value = 13, .center_freq = 2472}, 1304 }; 1305 1306 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, 1307 struct ieee80211_vif *vif, u16 queue, 1308 const struct ieee80211_tx_queue_params *params) 1309 { 1310 enum wl1251_acx_ps_scheme ps_scheme; 1311 struct wl1251 *wl = hw->priv; 1312 int ret; 1313 1314 mutex_lock(&wl->mutex); 1315 1316 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue); 1317 1318 ret = wl1251_ps_elp_wakeup(wl); 1319 if (ret < 0) 1320 goto out; 1321 1322 /* mac80211 uses units of 32 usec */ 1323 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue), 1324 params->cw_min, params->cw_max, 1325 params->aifs, params->txop * 32); 1326 if (ret < 0) 1327 goto out_sleep; 1328 1329 if (params->uapsd) 1330 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER; 1331 else 1332 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY; 1333 1334 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue), 1335 CHANNEL_TYPE_EDCF, 1336 wl1251_tx_get_queue(queue), ps_scheme, 1337 WL1251_ACX_ACK_POLICY_LEGACY); 1338 if (ret < 0) 1339 goto out_sleep; 1340 1341 out_sleep: 1342 wl1251_ps_elp_sleep(wl); 1343 1344 out: 1345 mutex_unlock(&wl->mutex); 1346 1347 return ret; 1348 } 1349 1350 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx, 1351 struct survey_info *survey) 1352 { 1353 struct wl1251 *wl = hw->priv; 1354 struct ieee80211_conf *conf = &hw->conf; 1355 1356 if (idx != 0) 1357 return -ENOENT; 1358 1359 survey->channel = conf->chandef.chan; 1360 survey->filled = SURVEY_INFO_NOISE_DBM; 1361 survey->noise = wl->noise; 1362 1363 return 0; 1364 } 1365 1366 /* can't be const, mac80211 writes to this */ 1367 static struct ieee80211_supported_band wl1251_band_2ghz = { 1368 .channels = wl1251_channels, 1369 .n_channels = ARRAY_SIZE(wl1251_channels), 1370 .bitrates = wl1251_rates, 1371 .n_bitrates = ARRAY_SIZE(wl1251_rates), 1372 }; 1373 1374 static const struct ieee80211_ops wl1251_ops = { 1375 .start = wl1251_op_start, 1376 .stop = wl1251_op_stop, 1377 .add_interface = wl1251_op_add_interface, 1378 .remove_interface = wl1251_op_remove_interface, 1379 .config = wl1251_op_config, 1380 .prepare_multicast = wl1251_op_prepare_multicast, 1381 .configure_filter = wl1251_op_configure_filter, 1382 .tx = wl1251_op_tx, 1383 .set_key = wl1251_op_set_key, 1384 .hw_scan = wl1251_op_hw_scan, 1385 .bss_info_changed = wl1251_op_bss_info_changed, 1386 .set_rts_threshold = wl1251_op_set_rts_threshold, 1387 .conf_tx = wl1251_op_conf_tx, 1388 .get_survey = wl1251_op_get_survey, 1389 }; 1390 1391 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data) 1392 { 1393 unsigned long timeout; 1394 1395 wl1251_reg_write32(wl, EE_ADDR, offset); 1396 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ); 1397 1398 /* EE_CTL_READ clears when data is ready */ 1399 timeout = jiffies + msecs_to_jiffies(100); 1400 while (1) { 1401 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ)) 1402 break; 1403 1404 if (time_after(jiffies, timeout)) 1405 return -ETIMEDOUT; 1406 1407 msleep(1); 1408 } 1409 1410 *data = wl1251_reg_read32(wl, EE_DATA); 1411 return 0; 1412 } 1413 1414 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset, 1415 u8 *data, size_t len) 1416 { 1417 size_t i; 1418 int ret; 1419 1420 wl1251_reg_write32(wl, EE_START, 0); 1421 1422 for (i = 0; i < len; i++) { 1423 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]); 1424 if (ret < 0) 1425 return ret; 1426 } 1427 1428 return 0; 1429 } 1430 1431 static int wl1251_read_eeprom_mac(struct wl1251 *wl) 1432 { 1433 u8 mac[ETH_ALEN]; 1434 int i, ret; 1435 1436 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE); 1437 1438 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac)); 1439 if (ret < 0) { 1440 wl1251_warning("failed to read MAC address from EEPROM"); 1441 return ret; 1442 } 1443 1444 /* MAC is stored in reverse order */ 1445 for (i = 0; i < ETH_ALEN; i++) 1446 wl->mac_addr[i] = mac[ETH_ALEN - i - 1]; 1447 1448 return 0; 1449 } 1450 1451 static int wl1251_register_hw(struct wl1251 *wl) 1452 { 1453 int ret; 1454 1455 if (wl->mac80211_registered) 1456 return 0; 1457 1458 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 1459 1460 ret = ieee80211_register_hw(wl->hw); 1461 if (ret < 0) { 1462 wl1251_error("unable to register mac80211 hw: %d", ret); 1463 return ret; 1464 } 1465 1466 wl->mac80211_registered = true; 1467 1468 wl1251_notice("loaded"); 1469 1470 return 0; 1471 } 1472 1473 int wl1251_init_ieee80211(struct wl1251 *wl) 1474 { 1475 int ret; 1476 1477 /* The tx descriptor buffer and the TKIP space */ 1478 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc) 1479 + WL1251_TKIP_IV_SPACE; 1480 1481 /* unit us */ 1482 /* FIXME: find a proper value */ 1483 1484 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_SUPPORTS_PS; 1485 1486 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1487 BIT(NL80211_IFTYPE_ADHOC); 1488 wl->hw->wiphy->max_scan_ssids = 1; 1489 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz; 1490 1491 wl->hw->queues = 4; 1492 1493 if (wl->use_eeprom) 1494 wl1251_read_eeprom_mac(wl); 1495 1496 ret = wl1251_register_hw(wl); 1497 if (ret) 1498 goto out; 1499 1500 wl1251_debugfs_init(wl); 1501 wl1251_notice("initialized"); 1502 1503 ret = 0; 1504 1505 out: 1506 return ret; 1507 } 1508 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211); 1509 1510 struct ieee80211_hw *wl1251_alloc_hw(void) 1511 { 1512 struct ieee80211_hw *hw; 1513 struct wl1251 *wl; 1514 int i; 1515 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf}; 1516 1517 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops); 1518 if (!hw) { 1519 wl1251_error("could not alloc ieee80211_hw"); 1520 return ERR_PTR(-ENOMEM); 1521 } 1522 1523 wl = hw->priv; 1524 memset(wl, 0, sizeof(*wl)); 1525 1526 wl->hw = hw; 1527 1528 wl->data_in_count = 0; 1529 1530 skb_queue_head_init(&wl->tx_queue); 1531 1532 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work); 1533 wl->channel = WL1251_DEFAULT_CHANNEL; 1534 wl->monitor_present = false; 1535 wl->joined = false; 1536 wl->scanning = false; 1537 wl->bss_type = MAX_BSS_TYPE; 1538 wl->default_key = 0; 1539 wl->listen_int = 1; 1540 wl->rx_counter = 0; 1541 wl->rx_handled = 0; 1542 wl->rx_current_buffer = 0; 1543 wl->rx_last_id = 0; 1544 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 1545 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 1546 wl->elp = false; 1547 wl->station_mode = STATION_ACTIVE_MODE; 1548 wl->psm_requested = false; 1549 wl->psm_entry_retry = 0; 1550 wl->tx_queue_stopped = false; 1551 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 1552 wl->rssi_thold = 0; 1553 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1554 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1555 wl->vif = NULL; 1556 1557 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) 1558 wl->tx_frames[i] = NULL; 1559 1560 wl->next_tx_complete = 0; 1561 1562 INIT_WORK(&wl->irq_work, wl1251_irq_work); 1563 INIT_WORK(&wl->tx_work, wl1251_tx_work); 1564 1565 /* 1566 * In case our MAC address is not correctly set, 1567 * we use a random but Nokia MAC. 1568 */ 1569 memcpy(wl->mac_addr, nokia_oui, 3); 1570 get_random_bytes(wl->mac_addr + 3, 3); 1571 1572 wl->state = WL1251_STATE_OFF; 1573 mutex_init(&wl->mutex); 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