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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 45 46 #include <net/mac80211.h> 47 #include <asm/unaligned.h> 48 49 #include "ath5k.h" 50 #include "base.h" 51 #include "reg.h" 52 53 /********************\ 54 * Mac80211 functions * 55 \********************/ 56 57 static void 58 ath5k_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, 59 struct sk_buff *skb) 60 { 61 struct ath5k_hw *ah = hw->priv; 62 u16 qnum = skb_get_queue_mapping(skb); 63 64 if (WARN_ON(qnum >= ah->ah_capabilities.cap_queues.q_tx_num)) { 65 ieee80211_free_txskb(hw, skb); 66 return; 67 } 68 69 ath5k_tx_queue(hw, skb, &ah->txqs[qnum], control); 70 } 71 72 73 static int 74 ath5k_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 75 { 76 struct ath5k_hw *ah = hw->priv; 77 int ret; 78 struct ath5k_vif *avf = (void *)vif->drv_priv; 79 80 mutex_lock(&ah->lock); 81 82 if ((vif->type == NL80211_IFTYPE_AP || 83 vif->type == NL80211_IFTYPE_ADHOC) 84 && (ah->num_ap_vifs + ah->num_adhoc_vifs) >= ATH_BCBUF) { 85 ret = -ELNRNG; 86 goto end; 87 } 88 89 /* Don't allow other interfaces if one ad-hoc is configured. 90 * TODO: Fix the problems with ad-hoc and multiple other interfaces. 91 * We would need to operate the HW in ad-hoc mode to allow TSF updates 92 * for the IBSS, but this breaks with additional AP or STA interfaces 93 * at the moment. */ 94 if (ah->num_adhoc_vifs || 95 (ah->nvifs && vif->type == NL80211_IFTYPE_ADHOC)) { 96 ATH5K_ERR(ah, "Only one single ad-hoc interface is allowed.\n"); 97 ret = -ELNRNG; 98 goto end; 99 } 100 101 switch (vif->type) { 102 case NL80211_IFTYPE_AP: 103 case NL80211_IFTYPE_STATION: 104 case NL80211_IFTYPE_ADHOC: 105 case NL80211_IFTYPE_MESH_POINT: 106 avf->opmode = vif->type; 107 break; 108 default: 109 ret = -EOPNOTSUPP; 110 goto end; 111 } 112 113 ah->nvifs++; 114 ATH5K_DBG(ah, ATH5K_DEBUG_MODE, "add interface mode %d\n", avf->opmode); 115 116 /* Assign the vap/adhoc to a beacon xmit slot. */ 117 if ((avf->opmode == NL80211_IFTYPE_AP) || 118 (avf->opmode == NL80211_IFTYPE_ADHOC) || 119 (avf->opmode == NL80211_IFTYPE_MESH_POINT)) { 120 int slot; 121 122 WARN_ON(list_empty(&ah->bcbuf)); 123 avf->bbuf = list_first_entry(&ah->bcbuf, struct ath5k_buf, 124 list); 125 list_del(&avf->bbuf->list); 126 127 avf->bslot = 0; 128 for (slot = 0; slot < ATH_BCBUF; slot++) { 129 if (!ah->bslot[slot]) { 130 avf->bslot = slot; 131 break; 132 } 133 } 134 BUG_ON(ah->bslot[avf->bslot] != NULL); 135 ah->bslot[avf->bslot] = vif; 136 if (avf->opmode == NL80211_IFTYPE_AP) 137 ah->num_ap_vifs++; 138 else if (avf->opmode == NL80211_IFTYPE_ADHOC) 139 ah->num_adhoc_vifs++; 140 else if (avf->opmode == NL80211_IFTYPE_MESH_POINT) 141 ah->num_mesh_vifs++; 142 } 143 144 /* Any MAC address is fine, all others are included through the 145 * filter. 146 */ 147 ath5k_hw_set_lladdr(ah, vif->addr); 148 149 ath5k_update_bssid_mask_and_opmode(ah, vif); 150 ret = 0; 151 end: 152 mutex_unlock(&ah->lock); 153 return ret; 154 } 155 156 157 static void 158 ath5k_remove_interface(struct ieee80211_hw *hw, 159 struct ieee80211_vif *vif) 160 { 161 struct ath5k_hw *ah = hw->priv; 162 struct ath5k_vif *avf = (void *)vif->drv_priv; 163 unsigned int i; 164 165 mutex_lock(&ah->lock); 166 ah->nvifs--; 167 168 if (avf->bbuf) { 169 ath5k_txbuf_free_skb(ah, avf->bbuf); 170 list_add_tail(&avf->bbuf->list, &ah->bcbuf); 171 for (i = 0; i < ATH_BCBUF; i++) { 172 if (ah->bslot[i] == vif) { 173 ah->bslot[i] = NULL; 174 break; 175 } 176 } 177 avf->bbuf = NULL; 178 } 179 if (avf->opmode == NL80211_IFTYPE_AP) 180 ah->num_ap_vifs--; 181 else if (avf->opmode == NL80211_IFTYPE_ADHOC) 182 ah->num_adhoc_vifs--; 183 else if (avf->opmode == NL80211_IFTYPE_MESH_POINT) 184 ah->num_mesh_vifs--; 185 186 ath5k_update_bssid_mask_and_opmode(ah, NULL); 187 mutex_unlock(&ah->lock); 188 } 189 190 191 /* 192 * TODO: Phy disable/diversity etc 193 */ 194 static int 195 ath5k_config(struct ieee80211_hw *hw, u32 changed) 196 { 197 struct ath5k_hw *ah = hw->priv; 198 struct ieee80211_conf *conf = &hw->conf; 199 int ret = 0; 200 int i; 201 202 mutex_lock(&ah->lock); 203 204 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 205 ret = ath5k_chan_set(ah, &conf->chandef); 206 if (ret < 0) 207 goto unlock; 208 } 209 210 if ((changed & IEEE80211_CONF_CHANGE_POWER) && 211 (ah->ah_txpower.txp_requested != conf->power_level)) { 212 ah->ah_txpower.txp_requested = conf->power_level; 213 214 /* Half dB steps */ 215 ath5k_hw_set_txpower_limit(ah, (conf->power_level * 2)); 216 } 217 218 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) { 219 ah->ah_retry_long = conf->long_frame_max_tx_count; 220 ah->ah_retry_short = conf->short_frame_max_tx_count; 221 222 for (i = 0; i < ah->ah_capabilities.cap_queues.q_tx_num; i++) 223 ath5k_hw_set_tx_retry_limits(ah, i); 224 } 225 226 /* TODO: 227 * 1) Move this on config_interface and handle each case 228 * separately eg. when we have only one STA vif, use 229 * AR5K_ANTMODE_SINGLE_AP 230 * 231 * 2) Allow the user to change antenna mode eg. when only 232 * one antenna is present 233 * 234 * 3) Allow the user to set default/tx antenna when possible 235 * 236 * 4) Default mode should handle 90% of the cases, together 237 * with fixed a/b and single AP modes we should be able to 238 * handle 99%. Sectored modes are extreme cases and i still 239 * haven't found a usage for them. If we decide to support them, 240 * then we must allow the user to set how many tx antennas we 241 * have available 242 */ 243 ath5k_hw_set_antenna_mode(ah, ah->ah_ant_mode); 244 245 unlock: 246 mutex_unlock(&ah->lock); 247 return ret; 248 } 249 250 251 static void 252 ath5k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 253 struct ieee80211_bss_conf *bss_conf, u32 changes) 254 { 255 struct ath5k_vif *avf = (void *)vif->drv_priv; 256 struct ath5k_hw *ah = hw->priv; 257 struct ath_common *common = ath5k_hw_common(ah); 258 259 mutex_lock(&ah->lock); 260 261 if (changes & BSS_CHANGED_BSSID) { 262 /* Cache for later use during resets */ 263 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); 264 common->curaid = 0; 265 ath5k_hw_set_bssid(ah); 266 mmiowb(); 267 } 268 269 if (changes & BSS_CHANGED_BEACON_INT) 270 ah->bintval = bss_conf->beacon_int; 271 272 if (changes & BSS_CHANGED_ERP_SLOT) { 273 int slot_time; 274 275 ah->ah_short_slot = bss_conf->use_short_slot; 276 slot_time = ath5k_hw_get_default_slottime(ah) + 277 3 * ah->ah_coverage_class; 278 ath5k_hw_set_ifs_intervals(ah, slot_time); 279 } 280 281 if (changes & BSS_CHANGED_ASSOC) { 282 avf->assoc = bss_conf->assoc; 283 if (bss_conf->assoc) 284 ah->assoc = bss_conf->assoc; 285 else 286 ah->assoc = ath5k_any_vif_assoc(ah); 287 288 if (ah->opmode == NL80211_IFTYPE_STATION) 289 ath5k_set_beacon_filter(hw, ah->assoc); 290 ath5k_hw_set_ledstate(ah, ah->assoc ? 291 AR5K_LED_ASSOC : AR5K_LED_INIT); 292 if (bss_conf->assoc) { 293 ATH5K_DBG(ah, ATH5K_DEBUG_ANY, 294 "Bss Info ASSOC %d, bssid: %pM\n", 295 bss_conf->aid, common->curbssid); 296 common->curaid = bss_conf->aid; 297 ath5k_hw_set_bssid(ah); 298 /* Once ANI is available you would start it here */ 299 } 300 } 301 302 if (changes & BSS_CHANGED_BEACON) { 303 spin_lock_bh(&ah->block); 304 ath5k_beacon_update(hw, vif); 305 spin_unlock_bh(&ah->block); 306 } 307 308 if (changes & BSS_CHANGED_BEACON_ENABLED) 309 ah->enable_beacon = bss_conf->enable_beacon; 310 311 if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_ENABLED | 312 BSS_CHANGED_BEACON_INT)) 313 ath5k_beacon_config(ah); 314 315 mutex_unlock(&ah->lock); 316 } 317 318 319 static u64 320 ath5k_prepare_multicast(struct ieee80211_hw *hw, 321 struct netdev_hw_addr_list *mc_list) 322 { 323 u32 mfilt[2], val; 324 u8 pos; 325 struct netdev_hw_addr *ha; 326 327 mfilt[0] = 0; 328 mfilt[1] = 0; 329 330 netdev_hw_addr_list_for_each(ha, mc_list) { 331 /* calculate XOR of eight 6-bit values */ 332 val = get_unaligned_le32(ha->addr + 0); 333 pos = (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val; 334 val = get_unaligned_le32(ha->addr + 3); 335 pos ^= (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val; 336 pos &= 0x3f; 337 mfilt[pos / 32] |= (1 << (pos % 32)); 338 /* XXX: we might be able to just do this instead, 339 * but not sure, needs testing, if we do use this we'd 340 * need to inform below not to reset the mcast */ 341 /* ath5k_hw_set_mcast_filterindex(ah, 342 * ha->addr[5]); */ 343 } 344 345 return ((u64)(mfilt[1]) << 32) | mfilt[0]; 346 } 347 348 349 /* 350 * o always accept unicast, broadcast, and multicast traffic 351 * o multicast traffic for all BSSIDs will be enabled if mac80211 352 * says it should be 353 * o maintain current state of phy ofdm or phy cck error reception. 354 * If the hardware detects any of these type of errors then 355 * ath5k_hw_get_rx_filter() will pass to us the respective 356 * hardware filters to be able to receive these type of frames. 357 * o probe request frames are accepted only when operating in 358 * hostap, adhoc, or monitor modes 359 * o enable promiscuous mode according to the interface state 360 * o accept beacons: 361 * - when operating in adhoc mode so the 802.11 layer creates 362 * node table entries for peers, 363 * - when operating in station mode for collecting rssi data when 364 * the station is otherwise quiet, or 365 * - when scanning 366 */ 367 static void 368 ath5k_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, 369 unsigned int *new_flags, u64 multicast) 370 { 371 #define SUPPORTED_FIF_FLAGS \ 372 (FIF_PROMISC_IN_BSS | FIF_ALLMULTI | FIF_FCSFAIL | \ 373 FIF_PLCPFAIL | FIF_CONTROL | FIF_OTHER_BSS | \ 374 FIF_BCN_PRBRESP_PROMISC) 375 376 struct ath5k_hw *ah = hw->priv; 377 u32 mfilt[2], rfilt; 378 struct ath5k_vif_iter_data iter_data; /* to count STA interfaces */ 379 380 mutex_lock(&ah->lock); 381 382 mfilt[0] = multicast; 383 mfilt[1] = multicast >> 32; 384 385 /* Only deal with supported flags */ 386 changed_flags &= SUPPORTED_FIF_FLAGS; 387 *new_flags &= SUPPORTED_FIF_FLAGS; 388 389 /* If HW detects any phy or radar errors, leave those filters on. 390 * Also, always enable Unicast, Broadcasts and Multicast 391 * XXX: move unicast, bssid broadcasts and multicast to mac80211 */ 392 rfilt = (ath5k_hw_get_rx_filter(ah) & (AR5K_RX_FILTER_PHYERR)) | 393 (AR5K_RX_FILTER_UCAST | AR5K_RX_FILTER_BCAST | 394 AR5K_RX_FILTER_MCAST); 395 396 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) { 397 if (*new_flags & FIF_PROMISC_IN_BSS) 398 __set_bit(ATH_STAT_PROMISC, ah->status); 399 else 400 __clear_bit(ATH_STAT_PROMISC, ah->status); 401 } 402 403 if (test_bit(ATH_STAT_PROMISC, ah->status)) 404 rfilt |= AR5K_RX_FILTER_PROM; 405 406 /* Note, AR5K_RX_FILTER_MCAST is already enabled */ 407 if (*new_flags & FIF_ALLMULTI) { 408 mfilt[0] = ~0; 409 mfilt[1] = ~0; 410 } 411 412 /* This is the best we can do */ 413 if (*new_flags & (FIF_FCSFAIL | FIF_PLCPFAIL)) 414 rfilt |= AR5K_RX_FILTER_PHYERR; 415 416 /* FIF_BCN_PRBRESP_PROMISC really means to enable beacons 417 * and probes for any BSSID */ 418 if ((*new_flags & FIF_BCN_PRBRESP_PROMISC) || (ah->nvifs > 1)) 419 rfilt |= AR5K_RX_FILTER_BEACON; 420 421 /* FIF_CONTROL doc says that if FIF_PROMISC_IN_BSS is not 422 * set we should only pass on control frames for this 423 * station. This needs testing. I believe right now this 424 * enables *all* control frames, which is OK.. but 425 * but we should see if we can improve on granularity */ 426 if (*new_flags & FIF_CONTROL) 427 rfilt |= AR5K_RX_FILTER_CONTROL; 428 429 /* Additional settings per mode -- this is per ath5k */ 430 431 /* XXX move these to mac80211, and add a beacon IFF flag to mac80211 */ 432 433 switch (ah->opmode) { 434 case NL80211_IFTYPE_MESH_POINT: 435 rfilt |= AR5K_RX_FILTER_CONTROL | 436 AR5K_RX_FILTER_BEACON | 437 AR5K_RX_FILTER_PROBEREQ | 438 AR5K_RX_FILTER_PROM; 439 break; 440 case NL80211_IFTYPE_AP: 441 case NL80211_IFTYPE_ADHOC: 442 rfilt |= AR5K_RX_FILTER_PROBEREQ | 443 AR5K_RX_FILTER_BEACON; 444 break; 445 case NL80211_IFTYPE_STATION: 446 if (ah->assoc) 447 rfilt |= AR5K_RX_FILTER_BEACON; 448 default: 449 break; 450 } 451 452 iter_data.hw_macaddr = NULL; 453 iter_data.n_stas = 0; 454 iter_data.need_set_hw_addr = false; 455 ieee80211_iterate_active_interfaces_atomic( 456 ah->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 457 ath5k_vif_iter, &iter_data); 458 459 /* Set up RX Filter */ 460 if (iter_data.n_stas > 1) { 461 /* If you have multiple STA interfaces connected to 462 * different APs, ARPs are not received (most of the time?) 463 * Enabling PROMISC appears to fix that problem. 464 */ 465 rfilt |= AR5K_RX_FILTER_PROM; 466 } 467 468 /* Set filters */ 469 ath5k_hw_set_rx_filter(ah, rfilt); 470 471 /* Set multicast bits */ 472 ath5k_hw_set_mcast_filter(ah, mfilt[0], mfilt[1]); 473 /* Set the cached hw filter flags, this will later actually 474 * be set in HW */ 475 ah->filter_flags = rfilt; 476 /* Store current FIF filter flags */ 477 ah->fif_filter_flags = *new_flags; 478 479 mutex_unlock(&ah->lock); 480 } 481 482 483 static int 484 ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 485 struct ieee80211_vif *vif, struct ieee80211_sta *sta, 486 struct ieee80211_key_conf *key) 487 { 488 struct ath5k_hw *ah = hw->priv; 489 struct ath_common *common = ath5k_hw_common(ah); 490 int ret = 0; 491 492 if (ath5k_modparam_nohwcrypt) 493 return -EOPNOTSUPP; 494 495 if (key->flags & IEEE80211_KEY_FLAG_RX_MGMT) 496 return -EOPNOTSUPP; 497 498 if (vif->type == NL80211_IFTYPE_ADHOC && 499 (key->cipher == WLAN_CIPHER_SUITE_TKIP || 500 key->cipher == WLAN_CIPHER_SUITE_CCMP) && 501 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 502 /* don't program group keys when using IBSS_RSN */ 503 return -EOPNOTSUPP; 504 } 505 506 switch (key->cipher) { 507 case WLAN_CIPHER_SUITE_WEP40: 508 case WLAN_CIPHER_SUITE_WEP104: 509 case WLAN_CIPHER_SUITE_TKIP: 510 break; 511 case WLAN_CIPHER_SUITE_CCMP: 512 if (common->crypt_caps & ATH_CRYPT_CAP_CIPHER_AESCCM) 513 break; 514 return -EOPNOTSUPP; 515 default: 516 WARN_ON(1); 517 return -EINVAL; 518 } 519 520 mutex_lock(&ah->lock); 521 522 switch (cmd) { 523 case SET_KEY: 524 ret = ath_key_config(common, vif, sta, key); 525 if (ret >= 0) { 526 key->hw_key_idx = ret; 527 /* push IV and Michael MIC generation to stack */ 528 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 529 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 530 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 531 if (key->cipher == WLAN_CIPHER_SUITE_CCMP) 532 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; 533 ret = 0; 534 } 535 break; 536 case DISABLE_KEY: 537 ath_key_delete(common, key); 538 break; 539 default: 540 ret = -EINVAL; 541 } 542 543 mmiowb(); 544 mutex_unlock(&ah->lock); 545 return ret; 546 } 547 548 549 static void 550 ath5k_sw_scan_start(struct ieee80211_hw *hw, 551 struct ieee80211_vif *vif, 552 const u8 *mac_addr) 553 { 554 struct ath5k_hw *ah = hw->priv; 555 if (!ah->assoc) 556 ath5k_hw_set_ledstate(ah, AR5K_LED_SCAN); 557 } 558 559 560 static void 561 ath5k_sw_scan_complete(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 562 { 563 struct ath5k_hw *ah = hw->priv; 564 ath5k_hw_set_ledstate(ah, ah->assoc ? 565 AR5K_LED_ASSOC : AR5K_LED_INIT); 566 } 567 568 569 static int 570 ath5k_get_stats(struct ieee80211_hw *hw, 571 struct ieee80211_low_level_stats *stats) 572 { 573 struct ath5k_hw *ah = hw->priv; 574 575 /* Force update */ 576 ath5k_hw_update_mib_counters(ah); 577 578 stats->dot11ACKFailureCount = ah->stats.ack_fail; 579 stats->dot11RTSFailureCount = ah->stats.rts_fail; 580 stats->dot11RTSSuccessCount = ah->stats.rts_ok; 581 stats->dot11FCSErrorCount = ah->stats.fcs_error; 582 583 return 0; 584 } 585 586 587 static int 588 ath5k_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, 589 const struct ieee80211_tx_queue_params *params) 590 { 591 struct ath5k_hw *ah = hw->priv; 592 struct ath5k_txq_info qi; 593 int ret = 0; 594 595 if (queue >= ah->ah_capabilities.cap_queues.q_tx_num) 596 return 0; 597 598 mutex_lock(&ah->lock); 599 600 ath5k_hw_get_tx_queueprops(ah, queue, &qi); 601 602 qi.tqi_aifs = params->aifs; 603 qi.tqi_cw_min = params->cw_min; 604 qi.tqi_cw_max = params->cw_max; 605 qi.tqi_burst_time = params->txop * 32; 606 607 ATH5K_DBG(ah, ATH5K_DEBUG_ANY, 608 "Configure tx [queue %d], " 609 "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", 610 queue, params->aifs, params->cw_min, 611 params->cw_max, params->txop); 612 613 if (ath5k_hw_set_tx_queueprops(ah, queue, &qi)) { 614 ATH5K_ERR(ah, 615 "Unable to update hardware queue %u!\n", queue); 616 ret = -EIO; 617 } else 618 ath5k_hw_reset_tx_queue(ah, queue); 619 620 mutex_unlock(&ah->lock); 621 622 return ret; 623 } 624 625 626 static u64 627 ath5k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 628 { 629 struct ath5k_hw *ah = hw->priv; 630 631 return ath5k_hw_get_tsf64(ah); 632 } 633 634 635 static void 636 ath5k_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u64 tsf) 637 { 638 struct ath5k_hw *ah = hw->priv; 639 640 ath5k_hw_set_tsf64(ah, tsf); 641 } 642 643 644 static void 645 ath5k_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 646 { 647 struct ath5k_hw *ah = hw->priv; 648 649 /* 650 * in IBSS mode we need to update the beacon timers too. 651 * this will also reset the TSF if we call it with 0 652 */ 653 if (ah->opmode == NL80211_IFTYPE_ADHOC) 654 ath5k_beacon_update_timers(ah, 0); 655 else 656 ath5k_hw_reset_tsf(ah); 657 } 658 659 660 static int 661 ath5k_get_survey(struct ieee80211_hw *hw, int idx, struct survey_info *survey) 662 { 663 struct ath5k_hw *ah = hw->priv; 664 struct ieee80211_conf *conf = &hw->conf; 665 struct ath_common *common = ath5k_hw_common(ah); 666 struct ath_cycle_counters *cc = &common->cc_survey; 667 unsigned int div = common->clockrate * 1000; 668 669 if (idx != 0) 670 return -ENOENT; 671 672 spin_lock_bh(&common->cc_lock); 673 ath_hw_cycle_counters_update(common); 674 if (cc->cycles > 0) { 675 ah->survey.channel_time += cc->cycles / div; 676 ah->survey.channel_time_busy += cc->rx_busy / div; 677 ah->survey.channel_time_rx += cc->rx_frame / div; 678 ah->survey.channel_time_tx += cc->tx_frame / div; 679 } 680 memset(cc, 0, sizeof(*cc)); 681 spin_unlock_bh(&common->cc_lock); 682 683 memcpy(survey, &ah->survey, sizeof(*survey)); 684 685 survey->channel = conf->chandef.chan; 686 survey->noise = ah->ah_noise_floor; 687 survey->filled = SURVEY_INFO_NOISE_DBM | 688 SURVEY_INFO_IN_USE | 689 SURVEY_INFO_CHANNEL_TIME | 690 SURVEY_INFO_CHANNEL_TIME_BUSY | 691 SURVEY_INFO_CHANNEL_TIME_RX | 692 SURVEY_INFO_CHANNEL_TIME_TX; 693 694 return 0; 695 } 696 697 698 /** 699 * ath5k_set_coverage_class - Set IEEE 802.11 coverage class 700 * 701 * @hw: struct ieee80211_hw pointer 702 * @coverage_class: IEEE 802.11 coverage class number 703 * 704 * Mac80211 callback. Sets slot time, ACK timeout and CTS timeout for given 705 * coverage class. The values are persistent, they are restored after device 706 * reset. 707 */ 708 static void 709 ath5k_set_coverage_class(struct ieee80211_hw *hw, s16 coverage_class) 710 { 711 struct ath5k_hw *ah = hw->priv; 712 713 mutex_lock(&ah->lock); 714 ath5k_hw_set_coverage_class(ah, coverage_class); 715 mutex_unlock(&ah->lock); 716 } 717 718 719 static int 720 ath5k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant) 721 { 722 struct ath5k_hw *ah = hw->priv; 723 724 if (tx_ant == 1 && rx_ant == 1) 725 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_A); 726 else if (tx_ant == 2 && rx_ant == 2) 727 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_B); 728 else if ((tx_ant & 3) == 3 && (rx_ant & 3) == 3) 729 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_DEFAULT); 730 else 731 return -EINVAL; 732 return 0; 733 } 734 735 736 static int 737 ath5k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) 738 { 739 struct ath5k_hw *ah = hw->priv; 740 741 switch (ah->ah_ant_mode) { 742 case AR5K_ANTMODE_FIXED_A: 743 *tx_ant = 1; *rx_ant = 1; break; 744 case AR5K_ANTMODE_FIXED_B: 745 *tx_ant = 2; *rx_ant = 2; break; 746 case AR5K_ANTMODE_DEFAULT: 747 *tx_ant = 3; *rx_ant = 3; break; 748 } 749 return 0; 750 } 751 752 753 static void ath5k_get_ringparam(struct ieee80211_hw *hw, 754 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 755 { 756 struct ath5k_hw *ah = hw->priv; 757 758 *tx = ah->txqs[AR5K_TX_QUEUE_ID_DATA_MIN].txq_max; 759 760 *tx_max = ATH5K_TXQ_LEN_MAX; 761 *rx = *rx_max = ATH_RXBUF; 762 } 763 764 765 static int ath5k_set_ringparam(struct ieee80211_hw *hw, u32 tx, u32 rx) 766 { 767 struct ath5k_hw *ah = hw->priv; 768 u16 qnum; 769 770 /* only support setting tx ring size for now */ 771 if (rx != ATH_RXBUF) 772 return -EINVAL; 773 774 /* restrict tx ring size min/max */ 775 if (!tx || tx > ATH5K_TXQ_LEN_MAX) 776 return -EINVAL; 777 778 for (qnum = 0; qnum < ARRAY_SIZE(ah->txqs); qnum++) { 779 if (!ah->txqs[qnum].setup) 780 continue; 781 if (ah->txqs[qnum].qnum < AR5K_TX_QUEUE_ID_DATA_MIN || 782 ah->txqs[qnum].qnum > AR5K_TX_QUEUE_ID_DATA_MAX) 783 continue; 784 785 ah->txqs[qnum].txq_max = tx; 786 if (ah->txqs[qnum].txq_len >= ah->txqs[qnum].txq_max) 787 ieee80211_stop_queue(hw, ah->txqs[qnum].qnum); 788 } 789 790 return 0; 791 } 792 793 794 const struct ieee80211_ops ath5k_hw_ops = { 795 .tx = ath5k_tx, 796 .start = ath5k_start, 797 .stop = ath5k_stop, 798 .add_interface = ath5k_add_interface, 799 /* .change_interface = not implemented */ 800 .remove_interface = ath5k_remove_interface, 801 .config = ath5k_config, 802 .bss_info_changed = ath5k_bss_info_changed, 803 .prepare_multicast = ath5k_prepare_multicast, 804 .configure_filter = ath5k_configure_filter, 805 /* .set_tim = not implemented */ 806 .set_key = ath5k_set_key, 807 /* .update_tkip_key = not implemented */ 808 /* .hw_scan = not implemented */ 809 .sw_scan_start = ath5k_sw_scan_start, 810 .sw_scan_complete = ath5k_sw_scan_complete, 811 .get_stats = ath5k_get_stats, 812 /* .get_tkip_seq = not implemented */ 813 /* .set_frag_threshold = not implemented */ 814 /* .set_rts_threshold = not implemented */ 815 /* .sta_add = not implemented */ 816 /* .sta_remove = not implemented */ 817 /* .sta_notify = not implemented */ 818 .conf_tx = ath5k_conf_tx, 819 .get_tsf = ath5k_get_tsf, 820 .set_tsf = ath5k_set_tsf, 821 .reset_tsf = ath5k_reset_tsf, 822 /* .tx_last_beacon = not implemented */ 823 /* .ampdu_action = not needed */ 824 .get_survey = ath5k_get_survey, 825 .set_coverage_class = ath5k_set_coverage_class, 826 /* .rfkill_poll = not implemented */ 827 /* .flush = not implemented */ 828 /* .channel_switch = not implemented */ 829 /* .napi_poll = not implemented */ 830 .set_antenna = ath5k_set_antenna, 831 .get_antenna = ath5k_get_antenna, 832 .set_ringparam = ath5k_set_ringparam, 833 .get_ringparam = ath5k_get_ringparam, 834 }; 835