1 /*- 2 * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting 3 * Copyright (c) 2004-2005 Atheros Communications, Inc. 4 * Copyright (c) 2006 Devicescape Software, Inc. 5 * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com> 6 * Copyright (c) 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu> 7 * Copyright (c) 2010 Bruno Randolf <br1@einfach.org> 8 * 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer, 16 * without modification. 17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 19 * redistribution must be conditioned upon including a substantially 20 * similar Disclaimer requirement for further binary redistribution. 21 * 3. Neither the names of the above-listed copyright holders nor the names 22 * of any contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * Alternatively, this software may be distributed under the terms of the 26 * GNU General Public License ("GPL") version 2 as published by the Free 27 * Software Foundation. 28 * 29 * NO WARRANTY 30 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 31 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 32 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 33 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 34 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 35 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 36 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 37 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 38 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 40 * THE POSSIBILITY OF SUCH DAMAGES. 41 * 42 */ 43 44 #include <asm/unaligned.h> 45 46 #include "base.h" 47 #include "reg.h" 48 49 /********************\ 50 * Mac80211 functions * 51 \********************/ 52 53 static void 54 ath5k_tx(struct ieee80211_hw *hw, struct sk_buff *skb) 55 { 56 struct ath5k_hw *ah = hw->priv; 57 u16 qnum = skb_get_queue_mapping(skb); 58 59 if (WARN_ON(qnum >= ah->ah_capabilities.cap_queues.q_tx_num)) { 60 dev_kfree_skb_any(skb); 61 return; 62 } 63 64 ath5k_tx_queue(hw, skb, &ah->txqs[qnum]); 65 } 66 67 68 static int 69 ath5k_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 70 { 71 struct ath5k_hw *ah = hw->priv; 72 int ret; 73 struct ath5k_vif *avf = (void *)vif->drv_priv; 74 75 mutex_lock(&ah->lock); 76 77 if ((vif->type == NL80211_IFTYPE_AP || 78 vif->type == NL80211_IFTYPE_ADHOC) 79 && (ah->num_ap_vifs + ah->num_adhoc_vifs) >= ATH_BCBUF) { 80 ret = -ELNRNG; 81 goto end; 82 } 83 84 /* Don't allow other interfaces if one ad-hoc is configured. 85 * TODO: Fix the problems with ad-hoc and multiple other interfaces. 86 * We would need to operate the HW in ad-hoc mode to allow TSF updates 87 * for the IBSS, but this breaks with additional AP or STA interfaces 88 * at the moment. */ 89 if (ah->num_adhoc_vifs || 90 (ah->nvifs && vif->type == NL80211_IFTYPE_ADHOC)) { 91 ATH5K_ERR(ah, "Only one single ad-hoc interface is allowed.\n"); 92 ret = -ELNRNG; 93 goto end; 94 } 95 96 switch (vif->type) { 97 case NL80211_IFTYPE_AP: 98 case NL80211_IFTYPE_STATION: 99 case NL80211_IFTYPE_ADHOC: 100 case NL80211_IFTYPE_MESH_POINT: 101 avf->opmode = vif->type; 102 break; 103 default: 104 ret = -EOPNOTSUPP; 105 goto end; 106 } 107 108 ah->nvifs++; 109 ATH5K_DBG(ah, ATH5K_DEBUG_MODE, "add interface mode %d\n", avf->opmode); 110 111 /* Assign the vap/adhoc to a beacon xmit slot. */ 112 if ((avf->opmode == NL80211_IFTYPE_AP) || 113 (avf->opmode == NL80211_IFTYPE_ADHOC) || 114 (avf->opmode == NL80211_IFTYPE_MESH_POINT)) { 115 int slot; 116 117 WARN_ON(list_empty(&ah->bcbuf)); 118 avf->bbuf = list_first_entry(&ah->bcbuf, struct ath5k_buf, 119 list); 120 list_del(&avf->bbuf->list); 121 122 avf->bslot = 0; 123 for (slot = 0; slot < ATH_BCBUF; slot++) { 124 if (!ah->bslot[slot]) { 125 avf->bslot = slot; 126 break; 127 } 128 } 129 BUG_ON(ah->bslot[avf->bslot] != NULL); 130 ah->bslot[avf->bslot] = vif; 131 if (avf->opmode == NL80211_IFTYPE_AP) 132 ah->num_ap_vifs++; 133 else if (avf->opmode == NL80211_IFTYPE_ADHOC) 134 ah->num_adhoc_vifs++; 135 } 136 137 /* Any MAC address is fine, all others are included through the 138 * filter. 139 */ 140 memcpy(&ah->lladdr, vif->addr, ETH_ALEN); 141 ath5k_hw_set_lladdr(ah, vif->addr); 142 143 memcpy(&avf->lladdr, vif->addr, ETH_ALEN); 144 145 ath5k_update_bssid_mask_and_opmode(ah, vif); 146 ret = 0; 147 end: 148 mutex_unlock(&ah->lock); 149 return ret; 150 } 151 152 153 static void 154 ath5k_remove_interface(struct ieee80211_hw *hw, 155 struct ieee80211_vif *vif) 156 { 157 struct ath5k_hw *ah = hw->priv; 158 struct ath5k_vif *avf = (void *)vif->drv_priv; 159 unsigned int i; 160 161 mutex_lock(&ah->lock); 162 ah->nvifs--; 163 164 if (avf->bbuf) { 165 ath5k_txbuf_free_skb(ah, avf->bbuf); 166 list_add_tail(&avf->bbuf->list, &ah->bcbuf); 167 for (i = 0; i < ATH_BCBUF; i++) { 168 if (ah->bslot[i] == vif) { 169 ah->bslot[i] = NULL; 170 break; 171 } 172 } 173 avf->bbuf = NULL; 174 } 175 if (avf->opmode == NL80211_IFTYPE_AP) 176 ah->num_ap_vifs--; 177 else if (avf->opmode == NL80211_IFTYPE_ADHOC) 178 ah->num_adhoc_vifs--; 179 180 ath5k_update_bssid_mask_and_opmode(ah, NULL); 181 mutex_unlock(&ah->lock); 182 } 183 184 185 /* 186 * TODO: Phy disable/diversity etc 187 */ 188 static int 189 ath5k_config(struct ieee80211_hw *hw, u32 changed) 190 { 191 struct ath5k_hw *ah = hw->priv; 192 struct ieee80211_conf *conf = &hw->conf; 193 int ret = 0; 194 int i; 195 196 mutex_lock(&ah->lock); 197 198 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 199 ret = ath5k_chan_set(ah, conf->channel); 200 if (ret < 0) 201 goto unlock; 202 } 203 204 if ((changed & IEEE80211_CONF_CHANGE_POWER) && 205 (ah->power_level != conf->power_level)) { 206 ah->power_level = conf->power_level; 207 208 /* Half dB steps */ 209 ath5k_hw_set_txpower_limit(ah, (conf->power_level * 2)); 210 } 211 212 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) { 213 ah->ah_retry_long = conf->long_frame_max_tx_count; 214 ah->ah_retry_short = conf->short_frame_max_tx_count; 215 216 for (i = 0; i < ah->ah_capabilities.cap_queues.q_tx_num; i++) 217 ath5k_hw_set_tx_retry_limits(ah, i); 218 } 219 220 /* TODO: 221 * 1) Move this on config_interface and handle each case 222 * separately eg. when we have only one STA vif, use 223 * AR5K_ANTMODE_SINGLE_AP 224 * 225 * 2) Allow the user to change antenna mode eg. when only 226 * one antenna is present 227 * 228 * 3) Allow the user to set default/tx antenna when possible 229 * 230 * 4) Default mode should handle 90% of the cases, together 231 * with fixed a/b and single AP modes we should be able to 232 * handle 99%. Sectored modes are extreme cases and i still 233 * haven't found a usage for them. If we decide to support them, 234 * then we must allow the user to set how many tx antennas we 235 * have available 236 */ 237 ath5k_hw_set_antenna_mode(ah, ah->ah_ant_mode); 238 239 unlock: 240 mutex_unlock(&ah->lock); 241 return ret; 242 } 243 244 245 static void 246 ath5k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 247 struct ieee80211_bss_conf *bss_conf, u32 changes) 248 { 249 struct ath5k_vif *avf = (void *)vif->drv_priv; 250 struct ath5k_hw *ah = hw->priv; 251 struct ath_common *common = ath5k_hw_common(ah); 252 unsigned long flags; 253 254 mutex_lock(&ah->lock); 255 256 if (changes & BSS_CHANGED_BSSID) { 257 /* Cache for later use during resets */ 258 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); 259 common->curaid = 0; 260 ath5k_hw_set_bssid(ah); 261 mmiowb(); 262 } 263 264 if (changes & BSS_CHANGED_BEACON_INT) 265 ah->bintval = bss_conf->beacon_int; 266 267 if (changes & BSS_CHANGED_ERP_SLOT) { 268 int slot_time; 269 270 ah->ah_short_slot = bss_conf->use_short_slot; 271 slot_time = ath5k_hw_get_default_slottime(ah) + 272 3 * ah->ah_coverage_class; 273 ath5k_hw_set_ifs_intervals(ah, slot_time); 274 } 275 276 if (changes & BSS_CHANGED_ASSOC) { 277 avf->assoc = bss_conf->assoc; 278 if (bss_conf->assoc) 279 ah->assoc = bss_conf->assoc; 280 else 281 ah->assoc = ath5k_any_vif_assoc(ah); 282 283 if (ah->opmode == NL80211_IFTYPE_STATION) 284 ath5k_set_beacon_filter(hw, ah->assoc); 285 ath5k_hw_set_ledstate(ah, ah->assoc ? 286 AR5K_LED_ASSOC : AR5K_LED_INIT); 287 if (bss_conf->assoc) { 288 ATH5K_DBG(ah, ATH5K_DEBUG_ANY, 289 "Bss Info ASSOC %d, bssid: %pM\n", 290 bss_conf->aid, common->curbssid); 291 common->curaid = bss_conf->aid; 292 ath5k_hw_set_bssid(ah); 293 /* Once ANI is available you would start it here */ 294 } 295 } 296 297 if (changes & BSS_CHANGED_BEACON) { 298 spin_lock_irqsave(&ah->block, flags); 299 ath5k_beacon_update(hw, vif); 300 spin_unlock_irqrestore(&ah->block, flags); 301 } 302 303 if (changes & BSS_CHANGED_BEACON_ENABLED) 304 ah->enable_beacon = bss_conf->enable_beacon; 305 306 if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_ENABLED | 307 BSS_CHANGED_BEACON_INT)) 308 ath5k_beacon_config(ah); 309 310 mutex_unlock(&ah->lock); 311 } 312 313 314 static u64 315 ath5k_prepare_multicast(struct ieee80211_hw *hw, 316 struct netdev_hw_addr_list *mc_list) 317 { 318 u32 mfilt[2], val; 319 u8 pos; 320 struct netdev_hw_addr *ha; 321 322 mfilt[0] = 0; 323 mfilt[1] = 1; 324 325 netdev_hw_addr_list_for_each(ha, mc_list) { 326 /* calculate XOR of eight 6-bit values */ 327 val = get_unaligned_le32(ha->addr + 0); 328 pos = (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val; 329 val = get_unaligned_le32(ha->addr + 3); 330 pos ^= (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val; 331 pos &= 0x3f; 332 mfilt[pos / 32] |= (1 << (pos % 32)); 333 /* XXX: we might be able to just do this instead, 334 * but not sure, needs testing, if we do use this we'd 335 * need to inform below not to reset the mcast */ 336 /* ath5k_hw_set_mcast_filterindex(ah, 337 * ha->addr[5]); */ 338 } 339 340 return ((u64)(mfilt[1]) << 32) | mfilt[0]; 341 } 342 343 344 /* 345 * o always accept unicast, broadcast, and multicast traffic 346 * o multicast traffic for all BSSIDs will be enabled if mac80211 347 * says it should be 348 * o maintain current state of phy ofdm or phy cck error reception. 349 * If the hardware detects any of these type of errors then 350 * ath5k_hw_get_rx_filter() will pass to us the respective 351 * hardware filters to be able to receive these type of frames. 352 * o probe request frames are accepted only when operating in 353 * hostap, adhoc, or monitor modes 354 * o enable promiscuous mode according to the interface state 355 * o accept beacons: 356 * - when operating in adhoc mode so the 802.11 layer creates 357 * node table entries for peers, 358 * - when operating in station mode for collecting rssi data when 359 * the station is otherwise quiet, or 360 * - when scanning 361 */ 362 static void 363 ath5k_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, 364 unsigned int *new_flags, u64 multicast) 365 { 366 #define SUPPORTED_FIF_FLAGS \ 367 (FIF_PROMISC_IN_BSS | FIF_ALLMULTI | FIF_FCSFAIL | \ 368 FIF_PLCPFAIL | FIF_CONTROL | FIF_OTHER_BSS | \ 369 FIF_BCN_PRBRESP_PROMISC) 370 371 struct ath5k_hw *ah = hw->priv; 372 u32 mfilt[2], rfilt; 373 struct ath5k_vif_iter_data iter_data; /* to count STA interfaces */ 374 375 mutex_lock(&ah->lock); 376 377 mfilt[0] = multicast; 378 mfilt[1] = multicast >> 32; 379 380 /* Only deal with supported flags */ 381 changed_flags &= SUPPORTED_FIF_FLAGS; 382 *new_flags &= SUPPORTED_FIF_FLAGS; 383 384 /* If HW detects any phy or radar errors, leave those filters on. 385 * Also, always enable Unicast, Broadcasts and Multicast 386 * XXX: move unicast, bssid broadcasts and multicast to mac80211 */ 387 rfilt = (ath5k_hw_get_rx_filter(ah) & (AR5K_RX_FILTER_PHYERR)) | 388 (AR5K_RX_FILTER_UCAST | AR5K_RX_FILTER_BCAST | 389 AR5K_RX_FILTER_MCAST); 390 391 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) { 392 if (*new_flags & FIF_PROMISC_IN_BSS) 393 __set_bit(ATH_STAT_PROMISC, ah->status); 394 else 395 __clear_bit(ATH_STAT_PROMISC, ah->status); 396 } 397 398 if (test_bit(ATH_STAT_PROMISC, ah->status)) 399 rfilt |= AR5K_RX_FILTER_PROM; 400 401 /* Note, AR5K_RX_FILTER_MCAST is already enabled */ 402 if (*new_flags & FIF_ALLMULTI) { 403 mfilt[0] = ~0; 404 mfilt[1] = ~0; 405 } 406 407 /* This is the best we can do */ 408 if (*new_flags & (FIF_FCSFAIL | FIF_PLCPFAIL)) 409 rfilt |= AR5K_RX_FILTER_PHYERR; 410 411 /* FIF_BCN_PRBRESP_PROMISC really means to enable beacons 412 * and probes for any BSSID */ 413 if ((*new_flags & FIF_BCN_PRBRESP_PROMISC) || (ah->nvifs > 1)) 414 rfilt |= AR5K_RX_FILTER_BEACON; 415 416 /* FIF_CONTROL doc says that if FIF_PROMISC_IN_BSS is not 417 * set we should only pass on control frames for this 418 * station. This needs testing. I believe right now this 419 * enables *all* control frames, which is OK.. but 420 * but we should see if we can improve on granularity */ 421 if (*new_flags & FIF_CONTROL) 422 rfilt |= AR5K_RX_FILTER_CONTROL; 423 424 /* Additional settings per mode -- this is per ath5k */ 425 426 /* XXX move these to mac80211, and add a beacon IFF flag to mac80211 */ 427 428 switch (ah->opmode) { 429 case NL80211_IFTYPE_MESH_POINT: 430 rfilt |= AR5K_RX_FILTER_CONTROL | 431 AR5K_RX_FILTER_BEACON | 432 AR5K_RX_FILTER_PROBEREQ | 433 AR5K_RX_FILTER_PROM; 434 break; 435 case NL80211_IFTYPE_AP: 436 case NL80211_IFTYPE_ADHOC: 437 rfilt |= AR5K_RX_FILTER_PROBEREQ | 438 AR5K_RX_FILTER_BEACON; 439 break; 440 case NL80211_IFTYPE_STATION: 441 if (ah->assoc) 442 rfilt |= AR5K_RX_FILTER_BEACON; 443 default: 444 break; 445 } 446 447 iter_data.hw_macaddr = NULL; 448 iter_data.n_stas = 0; 449 iter_data.need_set_hw_addr = false; 450 ieee80211_iterate_active_interfaces_atomic(ah->hw, ath5k_vif_iter, 451 &iter_data); 452 453 /* Set up RX Filter */ 454 if (iter_data.n_stas > 1) { 455 /* If you have multiple STA interfaces connected to 456 * different APs, ARPs are not received (most of the time?) 457 * Enabling PROMISC appears to fix that problem. 458 */ 459 rfilt |= AR5K_RX_FILTER_PROM; 460 } 461 462 /* Set filters */ 463 ath5k_hw_set_rx_filter(ah, rfilt); 464 465 /* Set multicast bits */ 466 ath5k_hw_set_mcast_filter(ah, mfilt[0], mfilt[1]); 467 /* Set the cached hw filter flags, this will later actually 468 * be set in HW */ 469 ah->filter_flags = rfilt; 470 471 mutex_unlock(&ah->lock); 472 } 473 474 475 static int 476 ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 477 struct ieee80211_vif *vif, struct ieee80211_sta *sta, 478 struct ieee80211_key_conf *key) 479 { 480 struct ath5k_hw *ah = hw->priv; 481 struct ath_common *common = ath5k_hw_common(ah); 482 int ret = 0; 483 484 if (ath5k_modparam_nohwcrypt) 485 return -EOPNOTSUPP; 486 487 switch (key->cipher) { 488 case WLAN_CIPHER_SUITE_WEP40: 489 case WLAN_CIPHER_SUITE_WEP104: 490 case WLAN_CIPHER_SUITE_TKIP: 491 break; 492 case WLAN_CIPHER_SUITE_CCMP: 493 if (common->crypt_caps & ATH_CRYPT_CAP_CIPHER_AESCCM) 494 break; 495 return -EOPNOTSUPP; 496 default: 497 WARN_ON(1); 498 return -EINVAL; 499 } 500 501 mutex_lock(&ah->lock); 502 503 switch (cmd) { 504 case SET_KEY: 505 ret = ath_key_config(common, vif, sta, key); 506 if (ret >= 0) { 507 key->hw_key_idx = ret; 508 /* push IV and Michael MIC generation to stack */ 509 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 510 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 511 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 512 if (key->cipher == WLAN_CIPHER_SUITE_CCMP) 513 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT; 514 ret = 0; 515 } 516 break; 517 case DISABLE_KEY: 518 ath_key_delete(common, key); 519 break; 520 default: 521 ret = -EINVAL; 522 } 523 524 mmiowb(); 525 mutex_unlock(&ah->lock); 526 return ret; 527 } 528 529 530 static void 531 ath5k_sw_scan_start(struct ieee80211_hw *hw) 532 { 533 struct ath5k_hw *ah = hw->priv; 534 if (!ah->assoc) 535 ath5k_hw_set_ledstate(ah, AR5K_LED_SCAN); 536 } 537 538 539 static void 540 ath5k_sw_scan_complete(struct ieee80211_hw *hw) 541 { 542 struct ath5k_hw *ah = hw->priv; 543 ath5k_hw_set_ledstate(ah, ah->assoc ? 544 AR5K_LED_ASSOC : AR5K_LED_INIT); 545 } 546 547 548 static int 549 ath5k_get_stats(struct ieee80211_hw *hw, 550 struct ieee80211_low_level_stats *stats) 551 { 552 struct ath5k_hw *ah = hw->priv; 553 554 /* Force update */ 555 ath5k_hw_update_mib_counters(ah); 556 557 stats->dot11ACKFailureCount = ah->stats.ack_fail; 558 stats->dot11RTSFailureCount = ah->stats.rts_fail; 559 stats->dot11RTSSuccessCount = ah->stats.rts_ok; 560 stats->dot11FCSErrorCount = ah->stats.fcs_error; 561 562 return 0; 563 } 564 565 566 static int 567 ath5k_conf_tx(struct ieee80211_hw *hw, u16 queue, 568 const struct ieee80211_tx_queue_params *params) 569 { 570 struct ath5k_hw *ah = hw->priv; 571 struct ath5k_txq_info qi; 572 int ret = 0; 573 574 if (queue >= ah->ah_capabilities.cap_queues.q_tx_num) 575 return 0; 576 577 mutex_lock(&ah->lock); 578 579 ath5k_hw_get_tx_queueprops(ah, queue, &qi); 580 581 qi.tqi_aifs = params->aifs; 582 qi.tqi_cw_min = params->cw_min; 583 qi.tqi_cw_max = params->cw_max; 584 qi.tqi_burst_time = params->txop; 585 586 ATH5K_DBG(ah, ATH5K_DEBUG_ANY, 587 "Configure tx [queue %d], " 588 "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", 589 queue, params->aifs, params->cw_min, 590 params->cw_max, params->txop); 591 592 if (ath5k_hw_set_tx_queueprops(ah, queue, &qi)) { 593 ATH5K_ERR(ah, 594 "Unable to update hardware queue %u!\n", queue); 595 ret = -EIO; 596 } else 597 ath5k_hw_reset_tx_queue(ah, queue); 598 599 mutex_unlock(&ah->lock); 600 601 return ret; 602 } 603 604 605 static u64 606 ath5k_get_tsf(struct ieee80211_hw *hw) 607 { 608 struct ath5k_hw *ah = hw->priv; 609 610 return ath5k_hw_get_tsf64(ah); 611 } 612 613 614 static void 615 ath5k_set_tsf(struct ieee80211_hw *hw, u64 tsf) 616 { 617 struct ath5k_hw *ah = hw->priv; 618 619 ath5k_hw_set_tsf64(ah, tsf); 620 } 621 622 623 static void 624 ath5k_reset_tsf(struct ieee80211_hw *hw) 625 { 626 struct ath5k_hw *ah = hw->priv; 627 628 /* 629 * in IBSS mode we need to update the beacon timers too. 630 * this will also reset the TSF if we call it with 0 631 */ 632 if (ah->opmode == NL80211_IFTYPE_ADHOC) 633 ath5k_beacon_update_timers(ah, 0); 634 else 635 ath5k_hw_reset_tsf(ah); 636 } 637 638 639 static int 640 ath5k_get_survey(struct ieee80211_hw *hw, int idx, struct survey_info *survey) 641 { 642 struct ath5k_hw *ah = hw->priv; 643 struct ieee80211_conf *conf = &hw->conf; 644 struct ath_common *common = ath5k_hw_common(ah); 645 struct ath_cycle_counters *cc = &common->cc_survey; 646 unsigned int div = common->clockrate * 1000; 647 648 if (idx != 0) 649 return -ENOENT; 650 651 spin_lock_bh(&common->cc_lock); 652 ath_hw_cycle_counters_update(common); 653 if (cc->cycles > 0) { 654 ah->survey.channel_time += cc->cycles / div; 655 ah->survey.channel_time_busy += cc->rx_busy / div; 656 ah->survey.channel_time_rx += cc->rx_frame / div; 657 ah->survey.channel_time_tx += cc->tx_frame / div; 658 } 659 memset(cc, 0, sizeof(*cc)); 660 spin_unlock_bh(&common->cc_lock); 661 662 memcpy(survey, &ah->survey, sizeof(*survey)); 663 664 survey->channel = conf->channel; 665 survey->noise = ah->ah_noise_floor; 666 survey->filled = SURVEY_INFO_NOISE_DBM | 667 SURVEY_INFO_CHANNEL_TIME | 668 SURVEY_INFO_CHANNEL_TIME_BUSY | 669 SURVEY_INFO_CHANNEL_TIME_RX | 670 SURVEY_INFO_CHANNEL_TIME_TX; 671 672 return 0; 673 } 674 675 676 /** 677 * ath5k_set_coverage_class - Set IEEE 802.11 coverage class 678 * 679 * @hw: struct ieee80211_hw pointer 680 * @coverage_class: IEEE 802.11 coverage class number 681 * 682 * Mac80211 callback. Sets slot time, ACK timeout and CTS timeout for given 683 * coverage class. The values are persistent, they are restored after device 684 * reset. 685 */ 686 static void 687 ath5k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class) 688 { 689 struct ath5k_hw *ah = hw->priv; 690 691 mutex_lock(&ah->lock); 692 ath5k_hw_set_coverage_class(ah, coverage_class); 693 mutex_unlock(&ah->lock); 694 } 695 696 697 static int 698 ath5k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant) 699 { 700 struct ath5k_hw *ah = hw->priv; 701 702 if (tx_ant == 1 && rx_ant == 1) 703 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_A); 704 else if (tx_ant == 2 && rx_ant == 2) 705 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_B); 706 else if ((tx_ant & 3) == 3 && (rx_ant & 3) == 3) 707 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_DEFAULT); 708 else 709 return -EINVAL; 710 return 0; 711 } 712 713 714 static int 715 ath5k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) 716 { 717 struct ath5k_hw *ah = hw->priv; 718 719 switch (ah->ah_ant_mode) { 720 case AR5K_ANTMODE_FIXED_A: 721 *tx_ant = 1; *rx_ant = 1; break; 722 case AR5K_ANTMODE_FIXED_B: 723 *tx_ant = 2; *rx_ant = 2; break; 724 case AR5K_ANTMODE_DEFAULT: 725 *tx_ant = 3; *rx_ant = 3; break; 726 } 727 return 0; 728 } 729 730 731 static void ath5k_get_ringparam(struct ieee80211_hw *hw, 732 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 733 { 734 struct ath5k_hw *ah = hw->priv; 735 736 *tx = ah->txqs[AR5K_TX_QUEUE_ID_DATA_MIN].txq_max; 737 738 *tx_max = ATH5K_TXQ_LEN_MAX; 739 *rx = *rx_max = ATH_RXBUF; 740 } 741 742 743 static int ath5k_set_ringparam(struct ieee80211_hw *hw, u32 tx, u32 rx) 744 { 745 struct ath5k_hw *ah = hw->priv; 746 u16 qnum; 747 748 /* only support setting tx ring size for now */ 749 if (rx != ATH_RXBUF) 750 return -EINVAL; 751 752 /* restrict tx ring size min/max */ 753 if (!tx || tx > ATH5K_TXQ_LEN_MAX) 754 return -EINVAL; 755 756 for (qnum = 0; qnum < ARRAY_SIZE(ah->txqs); qnum++) { 757 if (!ah->txqs[qnum].setup) 758 continue; 759 if (ah->txqs[qnum].qnum < AR5K_TX_QUEUE_ID_DATA_MIN || 760 ah->txqs[qnum].qnum > AR5K_TX_QUEUE_ID_DATA_MAX) 761 continue; 762 763 ah->txqs[qnum].txq_max = tx; 764 if (ah->txqs[qnum].txq_len >= ah->txqs[qnum].txq_max) 765 ieee80211_stop_queue(hw, ah->txqs[qnum].qnum); 766 } 767 768 return 0; 769 } 770 771 772 const struct ieee80211_ops ath5k_hw_ops = { 773 .tx = ath5k_tx, 774 .start = ath5k_start, 775 .stop = ath5k_stop, 776 .add_interface = ath5k_add_interface, 777 /* .change_interface = not implemented */ 778 .remove_interface = ath5k_remove_interface, 779 .config = ath5k_config, 780 .bss_info_changed = ath5k_bss_info_changed, 781 .prepare_multicast = ath5k_prepare_multicast, 782 .configure_filter = ath5k_configure_filter, 783 /* .set_tim = not implemented */ 784 .set_key = ath5k_set_key, 785 /* .update_tkip_key = not implemented */ 786 /* .hw_scan = not implemented */ 787 .sw_scan_start = ath5k_sw_scan_start, 788 .sw_scan_complete = ath5k_sw_scan_complete, 789 .get_stats = ath5k_get_stats, 790 /* .get_tkip_seq = not implemented */ 791 /* .set_frag_threshold = not implemented */ 792 /* .set_rts_threshold = not implemented */ 793 /* .sta_add = not implemented */ 794 /* .sta_remove = not implemented */ 795 /* .sta_notify = not implemented */ 796 .conf_tx = ath5k_conf_tx, 797 .get_tsf = ath5k_get_tsf, 798 .set_tsf = ath5k_set_tsf, 799 .reset_tsf = ath5k_reset_tsf, 800 /* .tx_last_beacon = not implemented */ 801 /* .ampdu_action = not needed */ 802 .get_survey = ath5k_get_survey, 803 .set_coverage_class = ath5k_set_coverage_class, 804 /* .rfkill_poll = not implemented */ 805 /* .flush = not implemented */ 806 /* .channel_switch = not implemented */ 807 /* .napi_poll = not implemented */ 808 .set_antenna = ath5k_set_antenna, 809 .get_antenna = ath5k_get_antenna, 810 .set_ringparam = ath5k_set_ringparam, 811 .get_ringparam = ath5k_get_ringparam, 812 }; 813