1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * This file is part of wl1271 4 * 5 * Copyright (C) 2009 Nokia Corporation 6 * 7 * Contact: Luciano Coelho <luciano.coelho@nokia.com> 8 */ 9 10#include <linux/kernel.h> 11#include <linux/module.h> 12#include <linux/etherdevice.h> 13#include <linux/pm_runtime.h> 14#include <linux/spinlock.h> 15 16#include "wlcore.h" 17#include "debug.h" 18#include "io.h" 19#include "ps.h" 20#include "tx.h" 21#include "event.h" 22#include "hw_ops.h" 23 24/* 25 * TODO: this is here just for now, it must be removed when the data 26 * operations are in place. 27 */ 28#include "../wl12xx/reg.h" 29 30static int wl1271_set_default_wep_key(struct wl1271 *wl, 31 struct wl12xx_vif *wlvif, u8 id) 32{ 33 int ret; 34 bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS); 35 36 if (is_ap) 37 ret = wl12xx_cmd_set_default_wep_key(wl, id, 38 wlvif->ap.bcast_hlid); 39 else 40 ret = wl12xx_cmd_set_default_wep_key(wl, id, wlvif->sta.hlid); 41 42 if (ret < 0) 43 return ret; 44 45 wl1271_debug(DEBUG_CRYPT, "default wep key idx: %d", (int)id); 46 return 0; 47} 48 49static int wl1271_alloc_tx_id(struct wl1271 *wl, struct sk_buff *skb) 50{ 51 int id; 52 53 id = find_first_zero_bit(wl->tx_frames_map, wl->num_tx_desc); 54 if (id >= wl->num_tx_desc) 55 return -EBUSY; 56 57 __set_bit(id, wl->tx_frames_map); 58 wl->tx_frames[id] = skb; 59 wl->tx_frames_cnt++; 60 return id; 61} 62 63void wl1271_free_tx_id(struct wl1271 *wl, int id) 64{ 65 if (__test_and_clear_bit(id, wl->tx_frames_map)) { 66 if (unlikely(wl->tx_frames_cnt == wl->num_tx_desc)) 67 clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags); 68 69 wl->tx_frames[id] = NULL; 70 wl->tx_frames_cnt--; 71 } 72} 73EXPORT_SYMBOL(wl1271_free_tx_id); 74 75static void wl1271_tx_ap_update_inconnection_sta(struct wl1271 *wl, 76 struct wl12xx_vif *wlvif, 77 struct sk_buff *skb) 78{ 79 struct ieee80211_hdr *hdr; 80 81 hdr = (struct ieee80211_hdr *)(skb->data + 82 sizeof(struct wl1271_tx_hw_descr)); 83 if (!ieee80211_is_auth(hdr->frame_control)) 84 return; 85 86 /* 87 * add the station to the known list before transmitting the 88 * authentication response. this way it won't get de-authed by FW 89 * when transmitting too soon. 90 */ 91 wl1271_acx_set_inconnection_sta(wl, wlvif, hdr->addr1); 92 93 /* 94 * ROC for 1 second on the AP channel for completing the connection. 95 * Note the ROC will be continued by the update_sta_state callbacks 96 * once the station reaches the associated state. 97 */ 98 wlcore_update_inconn_sta(wl, wlvif, NULL, true); 99 wlvif->pending_auth_reply_time = jiffies; 100 cancel_delayed_work(&wlvif->pending_auth_complete_work); 101 ieee80211_queue_delayed_work(wl->hw, 102 &wlvif->pending_auth_complete_work, 103 msecs_to_jiffies(WLCORE_PEND_AUTH_ROC_TIMEOUT)); 104} 105 106static void wl1271_tx_regulate_link(struct wl1271 *wl, 107 struct wl12xx_vif *wlvif, 108 u8 hlid) 109{ 110 bool fw_ps; 111 u8 tx_pkts; 112 113 if (WARN_ON(!test_bit(hlid, wlvif->links_map))) 114 return; 115 116 fw_ps = test_bit(hlid, &wl->ap_fw_ps_map); 117 tx_pkts = wl->links[hlid].allocated_pkts; 118 119 /* 120 * if in FW PS and there is enough data in FW we can put the link 121 * into high-level PS and clean out its TX queues. 122 * Make an exception if this is the only connected link. In this 123 * case FW-memory congestion is less of a problem. 124 * Note that a single connected STA means 2*ap_count + 1 active links, 125 * since we must account for the global and broadcast AP links 126 * for each AP. The "fw_ps" check assures us the other link is a STA 127 * connected to the AP. Otherwise the FW would not set the PSM bit. 128 */ 129 if (wl->active_link_count > (wl->ap_count*2 + 1) && fw_ps && 130 tx_pkts >= WL1271_PS_STA_MAX_PACKETS) 131 wl12xx_ps_link_start(wl, wlvif, hlid, true); 132} 133 134bool wl12xx_is_dummy_packet(struct wl1271 *wl, struct sk_buff *skb) 135{ 136 return wl->dummy_packet == skb; 137} 138EXPORT_SYMBOL(wl12xx_is_dummy_packet); 139 140static u8 wl12xx_tx_get_hlid_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif, 141 struct sk_buff *skb, struct ieee80211_sta *sta) 142{ 143 if (sta) { 144 struct wl1271_station *wl_sta; 145 146 wl_sta = (struct wl1271_station *)sta->drv_priv; 147 return wl_sta->hlid; 148 } else { 149 struct ieee80211_hdr *hdr; 150 151 if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) 152 return wl->system_hlid; 153 154 hdr = (struct ieee80211_hdr *)skb->data; 155 if (is_multicast_ether_addr(ieee80211_get_DA(hdr))) 156 return wlvif->ap.bcast_hlid; 157 else 158 return wlvif->ap.global_hlid; 159 } 160} 161 162u8 wl12xx_tx_get_hlid(struct wl1271 *wl, struct wl12xx_vif *wlvif, 163 struct sk_buff *skb, struct ieee80211_sta *sta) 164{ 165 struct ieee80211_tx_info *control; 166 167 if (wlvif->bss_type == BSS_TYPE_AP_BSS) 168 return wl12xx_tx_get_hlid_ap(wl, wlvif, skb, sta); 169 170 control = IEEE80211_SKB_CB(skb); 171 if (control->flags & IEEE80211_TX_CTL_TX_OFFCHAN) { 172 wl1271_debug(DEBUG_TX, "tx offchannel"); 173 return wlvif->dev_hlid; 174 } 175 176 return wlvif->sta.hlid; 177} 178 179unsigned int wlcore_calc_packet_alignment(struct wl1271 *wl, 180 unsigned int packet_length) 181{ 182 if ((wl->quirks & WLCORE_QUIRK_TX_PAD_LAST_FRAME) || 183 !(wl->quirks & WLCORE_QUIRK_TX_BLOCKSIZE_ALIGN)) 184 return ALIGN(packet_length, WL1271_TX_ALIGN_TO); 185 else 186 return ALIGN(packet_length, WL12XX_BUS_BLOCK_SIZE); 187} 188EXPORT_SYMBOL(wlcore_calc_packet_alignment); 189 190static int wl1271_tx_allocate(struct wl1271 *wl, struct wl12xx_vif *wlvif, 191 struct sk_buff *skb, u32 extra, u32 buf_offset, 192 u8 hlid, bool is_gem) 193{ 194 struct wl1271_tx_hw_descr *desc; 195 u32 total_len = skb->len + sizeof(struct wl1271_tx_hw_descr) + extra; 196 u32 total_blocks; 197 int id, ret = -EBUSY, ac; 198 u32 spare_blocks; 199 200 if (buf_offset + total_len > wl->aggr_buf_size) 201 return -EAGAIN; 202 203 spare_blocks = wlcore_hw_get_spare_blocks(wl, is_gem); 204 205 /* allocate free identifier for the packet */ 206 id = wl1271_alloc_tx_id(wl, skb); 207 if (id < 0) 208 return id; 209 210 total_blocks = wlcore_hw_calc_tx_blocks(wl, total_len, spare_blocks); 211 212 if (total_blocks <= wl->tx_blocks_available) { 213 desc = skb_push(skb, total_len - skb->len); 214 215 wlcore_hw_set_tx_desc_blocks(wl, desc, total_blocks, 216 spare_blocks); 217 218 desc->id = id; 219 220 wl->tx_blocks_available -= total_blocks; 221 wl->tx_allocated_blocks += total_blocks; 222 223 /* 224 * If the FW was empty before, arm the Tx watchdog. Also do 225 * this on the first Tx after resume, as we always cancel the 226 * watchdog on suspend. 227 */ 228 if (wl->tx_allocated_blocks == total_blocks || 229 test_and_clear_bit(WL1271_FLAG_REINIT_TX_WDOG, &wl->flags)) 230 wl12xx_rearm_tx_watchdog_locked(wl); 231 232 ac = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); 233 wl->tx_allocated_pkts[ac]++; 234 235 if (test_bit(hlid, wl->links_map)) 236 wl->links[hlid].allocated_pkts++; 237 238 ret = 0; 239 240 wl1271_debug(DEBUG_TX, 241 "tx_allocate: size: %d, blocks: %d, id: %d", 242 total_len, total_blocks, id); 243 } else { 244 wl1271_free_tx_id(wl, id); 245 } 246 247 return ret; 248} 249 250static void wl1271_tx_fill_hdr(struct wl1271 *wl, struct wl12xx_vif *wlvif, 251 struct sk_buff *skb, u32 extra, 252 struct ieee80211_tx_info *control, u8 hlid) 253{ 254 struct wl1271_tx_hw_descr *desc; 255 int ac, rate_idx; 256 s64 hosttime; 257 u16 tx_attr = 0; 258 __le16 frame_control; 259 struct ieee80211_hdr *hdr; 260 u8 *frame_start; 261 bool is_dummy; 262 263 desc = (struct wl1271_tx_hw_descr *) skb->data; 264 frame_start = (u8 *)(desc + 1); 265 hdr = (struct ieee80211_hdr *)(frame_start + extra); 266 frame_control = hdr->frame_control; 267 268 /* relocate space for security header */ 269 if (extra) { 270 int hdrlen = ieee80211_hdrlen(frame_control); 271 memmove(frame_start, hdr, hdrlen); 272 skb_set_network_header(skb, skb_network_offset(skb) + extra); 273 } 274 275 /* configure packet life time */ 276 hosttime = (ktime_get_boottime_ns() >> 10); 277 desc->start_time = cpu_to_le32(hosttime - wl->time_offset); 278 279 is_dummy = wl12xx_is_dummy_packet(wl, skb); 280 if (is_dummy || !wlvif || wlvif->bss_type != BSS_TYPE_AP_BSS) 281 desc->life_time = cpu_to_le16(TX_HW_MGMT_PKT_LIFETIME_TU); 282 else 283 desc->life_time = cpu_to_le16(TX_HW_AP_MODE_PKT_LIFETIME_TU); 284 285 /* queue */ 286 ac = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); 287 desc->tid = skb->priority; 288 289 if (is_dummy) { 290 /* 291 * FW expects the dummy packet to have an invalid session id - 292 * any session id that is different than the one set in the join 293 */ 294 tx_attr = (SESSION_COUNTER_INVALID << 295 TX_HW_ATTR_OFST_SESSION_COUNTER) & 296 TX_HW_ATTR_SESSION_COUNTER; 297 298 tx_attr |= TX_HW_ATTR_TX_DUMMY_REQ; 299 } else if (wlvif) { 300 u8 session_id = wl->session_ids[hlid]; 301 302 if ((wl->quirks & WLCORE_QUIRK_AP_ZERO_SESSION_ID) && 303 (wlvif->bss_type == BSS_TYPE_AP_BSS)) 304 session_id = 0; 305 306 /* configure the tx attributes */ 307 tx_attr = session_id << TX_HW_ATTR_OFST_SESSION_COUNTER; 308 } 309 310 desc->hlid = hlid; 311 if (is_dummy || !wlvif) 312 rate_idx = 0; 313 else if (wlvif->bss_type != BSS_TYPE_AP_BSS) { 314 /* 315 * if the packets are data packets 316 * send them with AP rate policies (EAPOLs are an exception), 317 * otherwise use default basic rates 318 */ 319 if (skb->protocol == cpu_to_be16(ETH_P_PAE)) 320 rate_idx = wlvif->sta.basic_rate_idx; 321 else if (control->flags & IEEE80211_TX_CTL_NO_CCK_RATE) 322 rate_idx = wlvif->sta.p2p_rate_idx; 323 else if (ieee80211_is_data(frame_control)) 324 rate_idx = wlvif->sta.ap_rate_idx; 325 else 326 rate_idx = wlvif->sta.basic_rate_idx; 327 } else { 328 if (hlid == wlvif->ap.global_hlid) 329 rate_idx = wlvif->ap.mgmt_rate_idx; 330 else if (hlid == wlvif->ap.bcast_hlid || 331 skb->protocol == cpu_to_be16(ETH_P_PAE) || 332 !ieee80211_is_data(frame_control)) 333 /* 334 * send non-data, bcast and EAPOLs using the 335 * min basic rate 336 */ 337 rate_idx = wlvif->ap.bcast_rate_idx; 338 else 339 rate_idx = wlvif->ap.ucast_rate_idx[ac]; 340 } 341 342 tx_attr |= rate_idx << TX_HW_ATTR_OFST_RATE_POLICY; 343 344 /* for WEP shared auth - no fw encryption is needed */ 345 if (ieee80211_is_auth(frame_control) && 346 ieee80211_has_protected(frame_control)) 347 tx_attr |= TX_HW_ATTR_HOST_ENCRYPT; 348 349 /* send EAPOL frames as voice */ 350 if (control->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO) 351 tx_attr |= TX_HW_ATTR_EAPOL_FRAME; 352 353 desc->tx_attr = cpu_to_le16(tx_attr); 354 355 wlcore_hw_set_tx_desc_csum(wl, desc, skb); 356 wlcore_hw_set_tx_desc_data_len(wl, desc, skb); 357} 358 359/* caller must hold wl->mutex */ 360static int wl1271_prepare_tx_frame(struct wl1271 *wl, struct wl12xx_vif *wlvif, 361 struct sk_buff *skb, u32 buf_offset, u8 hlid) 362{ 363 struct ieee80211_tx_info *info; 364 u32 extra = 0; 365 int ret = 0; 366 u32 total_len; 367 bool is_dummy; 368 bool is_gem = false; 369 370 if (!skb) { 371 wl1271_error("discarding null skb"); 372 return -EINVAL; 373 } 374 375 if (hlid == WL12XX_INVALID_LINK_ID) { 376 wl1271_error("invalid hlid. dropping skb 0x%p", skb); 377 return -EINVAL; 378 } 379 380 info = IEEE80211_SKB_CB(skb); 381 382 is_dummy = wl12xx_is_dummy_packet(wl, skb); 383 384 if ((wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE) && 385 info->control.hw_key && 386 info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP) 387 extra = WL1271_EXTRA_SPACE_TKIP; 388 389 if (info->control.hw_key) { 390 bool is_wep; 391 u8 idx = info->control.hw_key->hw_key_idx; 392 u32 cipher = info->control.hw_key->cipher; 393 394 is_wep = (cipher == WLAN_CIPHER_SUITE_WEP40) || 395 (cipher == WLAN_CIPHER_SUITE_WEP104); 396 397 if (WARN_ON(is_wep && wlvif && wlvif->default_key != idx)) { 398 ret = wl1271_set_default_wep_key(wl, wlvif, idx); 399 if (ret < 0) 400 return ret; 401 wlvif->default_key = idx; 402 } 403 404 is_gem = (cipher == WL1271_CIPHER_SUITE_GEM); 405 } 406 407 ret = wl1271_tx_allocate(wl, wlvif, skb, extra, buf_offset, hlid, 408 is_gem); 409 if (ret < 0) 410 return ret; 411 412 wl1271_tx_fill_hdr(wl, wlvif, skb, extra, info, hlid); 413 414 if (!is_dummy && wlvif && wlvif->bss_type == BSS_TYPE_AP_BSS) { 415 wl1271_tx_ap_update_inconnection_sta(wl, wlvif, skb); 416 wl1271_tx_regulate_link(wl, wlvif, hlid); 417 } 418 419 /* 420 * The length of each packet is stored in terms of 421 * words. Thus, we must pad the skb data to make sure its 422 * length is aligned. The number of padding bytes is computed 423 * and set in wl1271_tx_fill_hdr. 424 * In special cases, we want to align to a specific block size 425 * (eg. for wl128x with SDIO we align to 256). 426 */ 427 total_len = wlcore_calc_packet_alignment(wl, skb->len); 428 429 memcpy(wl->aggr_buf + buf_offset, skb->data, skb->len); 430 memset(wl->aggr_buf + buf_offset + skb->len, 0, total_len - skb->len); 431 432 /* Revert side effects in the dummy packet skb, so it can be reused */ 433 if (is_dummy) 434 skb_pull(skb, sizeof(struct wl1271_tx_hw_descr)); 435 436 return total_len; 437} 438 439u32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set, 440 enum nl80211_band rate_band) 441{ 442 struct ieee80211_supported_band *band; 443 u32 enabled_rates = 0; 444 int bit; 445 446 band = wl->hw->wiphy->bands[rate_band]; 447 for (bit = 0; bit < band->n_bitrates; bit++) { 448 if (rate_set & 0x1) 449 enabled_rates |= band->bitrates[bit].hw_value; 450 rate_set >>= 1; 451 } 452 453 /* MCS rates indication are on bits 16 - 31 */ 454 rate_set >>= HW_HT_RATES_OFFSET - band->n_bitrates; 455 456 for (bit = 0; bit < 16; bit++) { 457 if (rate_set & 0x1) 458 enabled_rates |= (CONF_HW_BIT_RATE_MCS_0 << bit); 459 rate_set >>= 1; 460 } 461 462 return enabled_rates; 463} 464 465void wl1271_handle_tx_low_watermark(struct wl1271 *wl) 466{ 467 int i; 468 struct wl12xx_vif *wlvif; 469 470 wl12xx_for_each_wlvif(wl, wlvif) { 471 for (i = 0; i < NUM_TX_QUEUES; i++) { 472 if (wlcore_is_queue_stopped_by_reason(wl, wlvif, i, 473 WLCORE_QUEUE_STOP_REASON_WATERMARK) && 474 wlvif->tx_queue_count[i] <= 475 WL1271_TX_QUEUE_LOW_WATERMARK) 476 /* firmware buffer has space, restart queues */ 477 wlcore_wake_queue(wl, wlvif, i, 478 WLCORE_QUEUE_STOP_REASON_WATERMARK); 479 } 480 } 481} 482 483static int wlcore_select_ac(struct wl1271 *wl) 484{ 485 int i, q = -1, ac; 486 u32 min_pkts = 0xffffffff; 487 488 /* 489 * Find a non-empty ac where: 490 * 1. There are packets to transmit 491 * 2. The FW has the least allocated blocks 492 * 493 * We prioritize the ACs according to VO>VI>BE>BK 494 */ 495 for (i = 0; i < NUM_TX_QUEUES; i++) { 496 ac = wl1271_tx_get_queue(i); 497 if (wl->tx_queue_count[ac] && 498 wl->tx_allocated_pkts[ac] < min_pkts) { 499 q = ac; 500 min_pkts = wl->tx_allocated_pkts[q]; 501 } 502 } 503 504 return q; 505} 506 507static struct sk_buff *wlcore_lnk_dequeue(struct wl1271 *wl, 508 struct wl1271_link *lnk, u8 q) 509{ 510 struct sk_buff *skb; 511 unsigned long flags; 512 513 skb = skb_dequeue(&lnk->tx_queue[q]); 514 if (skb) { 515 spin_lock_irqsave(&wl->wl_lock, flags); 516 WARN_ON_ONCE(wl->tx_queue_count[q] <= 0); 517 wl->tx_queue_count[q]--; 518 if (lnk->wlvif) { 519 WARN_ON_ONCE(lnk->wlvif->tx_queue_count[q] <= 0); 520 lnk->wlvif->tx_queue_count[q]--; 521 } 522 spin_unlock_irqrestore(&wl->wl_lock, flags); 523 } 524 525 return skb; 526} 527 528static struct sk_buff *wlcore_lnk_dequeue_high_prio(struct wl1271 *wl, 529 u8 hlid, u8 ac, 530 u8 *low_prio_hlid) 531{ 532 struct wl1271_link *lnk = &wl->links[hlid]; 533 534 if (!wlcore_hw_lnk_high_prio(wl, hlid, lnk)) { 535 if (*low_prio_hlid == WL12XX_INVALID_LINK_ID && 536 !skb_queue_empty(&lnk->tx_queue[ac]) && 537 wlcore_hw_lnk_low_prio(wl, hlid, lnk)) 538 /* we found the first non-empty low priority queue */ 539 *low_prio_hlid = hlid; 540 541 return NULL; 542 } 543 544 return wlcore_lnk_dequeue(wl, lnk, ac); 545} 546 547static struct sk_buff *wlcore_vif_dequeue_high_prio(struct wl1271 *wl, 548 struct wl12xx_vif *wlvif, 549 u8 ac, u8 *hlid, 550 u8 *low_prio_hlid) 551{ 552 struct sk_buff *skb = NULL; 553 int i, h, start_hlid; 554 555 /* start from the link after the last one */ 556 start_hlid = (wlvif->last_tx_hlid + 1) % wl->num_links; 557 558 /* dequeue according to AC, round robin on each link */ 559 for (i = 0; i < wl->num_links; i++) { 560 h = (start_hlid + i) % wl->num_links; 561 562 /* only consider connected stations */ 563 if (!test_bit(h, wlvif->links_map)) 564 continue; 565 566 skb = wlcore_lnk_dequeue_high_prio(wl, h, ac, 567 low_prio_hlid); 568 if (!skb) 569 continue; 570 571 wlvif->last_tx_hlid = h; 572 break; 573 } 574 575 if (!skb) 576 wlvif->last_tx_hlid = 0; 577 578 *hlid = wlvif->last_tx_hlid; 579 return skb; 580} 581 582static struct sk_buff *wl1271_skb_dequeue(struct wl1271 *wl, u8 *hlid) 583{ 584 unsigned long flags; 585 struct wl12xx_vif *wlvif = wl->last_wlvif; 586 struct sk_buff *skb = NULL; 587 int ac; 588 u8 low_prio_hlid = WL12XX_INVALID_LINK_ID; 589 590 ac = wlcore_select_ac(wl); 591 if (ac < 0) 592 goto out; 593 594 /* continue from last wlvif (round robin) */ 595 if (wlvif) { 596 wl12xx_for_each_wlvif_continue(wl, wlvif) { 597 if (!wlvif->tx_queue_count[ac]) 598 continue; 599 600 skb = wlcore_vif_dequeue_high_prio(wl, wlvif, ac, hlid, 601 &low_prio_hlid); 602 if (!skb) 603 continue; 604 605 wl->last_wlvif = wlvif; 606 break; 607 } 608 } 609 610 /* dequeue from the system HLID before the restarting wlvif list */ 611 if (!skb) { 612 skb = wlcore_lnk_dequeue_high_prio(wl, wl->system_hlid, 613 ac, &low_prio_hlid); 614 if (skb) { 615 *hlid = wl->system_hlid; 616 wl->last_wlvif = NULL; 617 } 618 } 619 620 /* Do a new pass over the wlvif list. But no need to continue 621 * after last_wlvif. The previous pass should have found it. */ 622 if (!skb) { 623 wl12xx_for_each_wlvif(wl, wlvif) { 624 if (!wlvif->tx_queue_count[ac]) 625 goto next; 626 627 skb = wlcore_vif_dequeue_high_prio(wl, wlvif, ac, hlid, 628 &low_prio_hlid); 629 if (skb) { 630 wl->last_wlvif = wlvif; 631 break; 632 } 633 634next: 635 if (wlvif == wl->last_wlvif) 636 break; 637 } 638 } 639 640 /* no high priority skbs found - but maybe a low priority one? */ 641 if (!skb && low_prio_hlid != WL12XX_INVALID_LINK_ID) { 642 struct wl1271_link *lnk = &wl->links[low_prio_hlid]; 643 skb = wlcore_lnk_dequeue(wl, lnk, ac); 644 645 WARN_ON(!skb); /* we checked this before */ 646 *hlid = low_prio_hlid; 647 648 /* ensure proper round robin in the vif/link levels */ 649 wl->last_wlvif = lnk->wlvif; 650 if (lnk->wlvif) 651 lnk->wlvif->last_tx_hlid = low_prio_hlid; 652 653 } 654 655out: 656 if (!skb && 657 test_and_clear_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags)) { 658 int q; 659 660 skb = wl->dummy_packet; 661 *hlid = wl->system_hlid; 662 q = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); 663 spin_lock_irqsave(&wl->wl_lock, flags); 664 WARN_ON_ONCE(wl->tx_queue_count[q] <= 0); 665 wl->tx_queue_count[q]--; 666 spin_unlock_irqrestore(&wl->wl_lock, flags); 667 } 668 669 return skb; 670} 671 672static void wl1271_skb_queue_head(struct wl1271 *wl, struct wl12xx_vif *wlvif, 673 struct sk_buff *skb, u8 hlid) 674{ 675 unsigned long flags; 676 int q = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); 677 678 if (wl12xx_is_dummy_packet(wl, skb)) { 679 set_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags); 680 } else { 681 skb_queue_head(&wl->links[hlid].tx_queue[q], skb); 682 683 /* make sure we dequeue the same packet next time */ 684 wlvif->last_tx_hlid = (hlid + wl->num_links - 1) % 685 wl->num_links; 686 } 687 688 spin_lock_irqsave(&wl->wl_lock, flags); 689 wl->tx_queue_count[q]++; 690 if (wlvif) 691 wlvif->tx_queue_count[q]++; 692 spin_unlock_irqrestore(&wl->wl_lock, flags); 693} 694 695static bool wl1271_tx_is_data_present(struct sk_buff *skb) 696{ 697 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data); 698 699 return ieee80211_is_data_present(hdr->frame_control); 700} 701 702void wl12xx_rearm_rx_streaming(struct wl1271 *wl, unsigned long *active_hlids) 703{ 704 struct wl12xx_vif *wlvif; 705 u32 timeout; 706 u8 hlid; 707 708 if (!wl->conf.rx_streaming.interval) 709 return; 710 711 if (!wl->conf.rx_streaming.always && 712 !test_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags)) 713 return; 714 715 timeout = wl->conf.rx_streaming.duration; 716 wl12xx_for_each_wlvif_sta(wl, wlvif) { 717 bool found = false; 718 for_each_set_bit(hlid, active_hlids, wl->num_links) { 719 if (test_bit(hlid, wlvif->links_map)) { 720 found = true; 721 break; 722 } 723 } 724 725 if (!found) 726 continue; 727 728 /* enable rx streaming */ 729 if (!test_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags)) 730 ieee80211_queue_work(wl->hw, 731 &wlvif->rx_streaming_enable_work); 732 733 mod_timer(&wlvif->rx_streaming_timer, 734 jiffies + msecs_to_jiffies(timeout)); 735 } 736} 737 738/* 739 * Returns failure values only in case of failed bus ops within this function. 740 * wl1271_prepare_tx_frame retvals won't be returned in order to avoid 741 * triggering recovery by higher layers when not necessary. 742 * In case a FW command fails within wl1271_prepare_tx_frame fails a recovery 743 * will be queued in wl1271_cmd_send. -EAGAIN/-EBUSY from prepare_tx_frame 744 * can occur and are legitimate so don't propagate. -EINVAL will emit a WARNING 745 * within prepare_tx_frame code but there's nothing we should do about those 746 * as well. 747 */ 748int wlcore_tx_work_locked(struct wl1271 *wl) 749{ 750 struct wl12xx_vif *wlvif; 751 struct sk_buff *skb; 752 struct wl1271_tx_hw_descr *desc; 753 u32 buf_offset = 0, last_len = 0; 754 bool sent_packets = false; 755 unsigned long active_hlids[BITS_TO_LONGS(WLCORE_MAX_LINKS)] = {0}; 756 int ret = 0; 757 int bus_ret = 0; 758 u8 hlid; 759 760 if (unlikely(wl->state != WLCORE_STATE_ON)) 761 return 0; 762 763 while ((skb = wl1271_skb_dequeue(wl, &hlid))) { 764 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 765 bool has_data = false; 766 767 wlvif = NULL; 768 if (!wl12xx_is_dummy_packet(wl, skb)) 769 wlvif = wl12xx_vif_to_data(info->control.vif); 770 else 771 hlid = wl->system_hlid; 772 773 has_data = wlvif && wl1271_tx_is_data_present(skb); 774 ret = wl1271_prepare_tx_frame(wl, wlvif, skb, buf_offset, 775 hlid); 776 if (ret == -EAGAIN) { 777 /* 778 * Aggregation buffer is full. 779 * Flush buffer and try again. 780 */ 781 wl1271_skb_queue_head(wl, wlvif, skb, hlid); 782 783 buf_offset = wlcore_hw_pre_pkt_send(wl, buf_offset, 784 last_len); 785 bus_ret = wlcore_write_data(wl, REG_SLV_MEM_DATA, 786 wl->aggr_buf, buf_offset, true); 787 if (bus_ret < 0) 788 goto out; 789 790 sent_packets = true; 791 buf_offset = 0; 792 continue; 793 } else if (ret == -EBUSY) { 794 /* 795 * Firmware buffer is full. 796 * Queue back last skb, and stop aggregating. 797 */ 798 wl1271_skb_queue_head(wl, wlvif, skb, hlid); 799 /* No work left, avoid scheduling redundant tx work */ 800 set_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags); 801 goto out_ack; 802 } else if (ret < 0) { 803 if (wl12xx_is_dummy_packet(wl, skb)) 804 /* 805 * fw still expects dummy packet, 806 * so re-enqueue it 807 */ 808 wl1271_skb_queue_head(wl, wlvif, skb, hlid); 809 else 810 ieee80211_free_txskb(wl->hw, skb); 811 goto out_ack; 812 } 813 last_len = ret; 814 buf_offset += last_len; 815 wl->tx_packets_count++; 816 if (has_data) { 817 desc = (struct wl1271_tx_hw_descr *) skb->data; 818 __set_bit(desc->hlid, active_hlids); 819 } 820 } 821 822out_ack: 823 if (buf_offset) { 824 buf_offset = wlcore_hw_pre_pkt_send(wl, buf_offset, last_len); 825 bus_ret = wlcore_write_data(wl, REG_SLV_MEM_DATA, wl->aggr_buf, 826 buf_offset, true); 827 if (bus_ret < 0) 828 goto out; 829 830 sent_packets = true; 831 } 832 if (sent_packets) { 833 /* 834 * Interrupt the firmware with the new packets. This is only 835 * required for older hardware revisions 836 */ 837 if (wl->quirks & WLCORE_QUIRK_END_OF_TRANSACTION) { 838 bus_ret = wlcore_write32(wl, WL12XX_HOST_WR_ACCESS, 839 wl->tx_packets_count); 840 if (bus_ret < 0) 841 goto out; 842 } 843 844 wl1271_handle_tx_low_watermark(wl); 845 } 846 wl12xx_rearm_rx_streaming(wl, active_hlids); 847 848out: 849 return bus_ret; 850} 851 852void wl1271_tx_work(struct work_struct *work) 853{ 854 struct wl1271 *wl = container_of(work, struct wl1271, tx_work); 855 int ret; 856 857 mutex_lock(&wl->mutex); 858 ret = pm_runtime_resume_and_get(wl->dev); 859 if (ret < 0) 860 goto out; 861 862 ret = wlcore_tx_work_locked(wl); 863 if (ret < 0) { 864 pm_runtime_put_noidle(wl->dev); 865 wl12xx_queue_recovery_work(wl); 866 goto out; 867 } 868 869 pm_runtime_mark_last_busy(wl->dev); 870 pm_runtime_put_autosuspend(wl->dev); 871out: 872 mutex_unlock(&wl->mutex); 873} 874 875static u8 wl1271_tx_get_rate_flags(u8 rate_class_index) 876{ 877 u8 flags = 0; 878 879 /* 880 * TODO: use wl12xx constants when this code is moved to wl12xx, as 881 * only it uses Tx-completion. 882 */ 883 if (rate_class_index <= 8) 884 flags |= IEEE80211_TX_RC_MCS; 885 886 /* 887 * TODO: use wl12xx constants when this code is moved to wl12xx, as 888 * only it uses Tx-completion. 889 */ 890 if (rate_class_index == 0) 891 flags |= IEEE80211_TX_RC_SHORT_GI; 892 893 return flags; 894} 895 896static void wl1271_tx_complete_packet(struct wl1271 *wl, 897 struct wl1271_tx_hw_res_descr *result) 898{ 899 struct ieee80211_tx_info *info; 900 struct ieee80211_vif *vif; 901 struct wl12xx_vif *wlvif; 902 struct sk_buff *skb; 903 int id = result->id; 904 int rate = -1; 905 u8 rate_flags = 0; 906 u8 retries = 0; 907 908 /* check for id legality */ 909 if (unlikely(id >= wl->num_tx_desc || wl->tx_frames[id] == NULL)) { 910 wl1271_warning("TX result illegal id: %d", id); 911 return; 912 } 913 914 skb = wl->tx_frames[id]; 915 info = IEEE80211_SKB_CB(skb); 916 917 if (wl12xx_is_dummy_packet(wl, skb)) { 918 wl1271_free_tx_id(wl, id); 919 return; 920 } 921 922 /* info->control is valid as long as we don't update info->status */ 923 vif = info->control.vif; 924 wlvif = wl12xx_vif_to_data(vif); 925 926 /* update the TX status info */ 927 if (result->status == TX_SUCCESS) { 928 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) 929 info->flags |= IEEE80211_TX_STAT_ACK; 930 rate = wlcore_rate_to_idx(wl, result->rate_class_index, 931 wlvif->band); 932 rate_flags = wl1271_tx_get_rate_flags(result->rate_class_index); 933 retries = result->ack_failures; 934 } else if (result->status == TX_RETRY_EXCEEDED) { 935 wl->stats.excessive_retries++; 936 retries = result->ack_failures; 937 } 938 939 info->status.rates[0].idx = rate; 940 info->status.rates[0].count = retries; 941 info->status.rates[0].flags = rate_flags; 942 info->status.ack_signal = -1; 943 944 wl->stats.retry_count += result->ack_failures; 945 946 /* remove private header from packet */ 947 skb_pull(skb, sizeof(struct wl1271_tx_hw_descr)); 948 949 /* remove TKIP header space if present */ 950 if ((wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE) && 951 info->control.hw_key && 952 info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP) { 953 int hdrlen = ieee80211_get_hdrlen_from_skb(skb); 954 memmove(skb->data + WL1271_EXTRA_SPACE_TKIP, skb->data, 955 hdrlen); 956 skb_pull(skb, WL1271_EXTRA_SPACE_TKIP); 957 } 958 959 wl1271_debug(DEBUG_TX, "tx status id %u skb 0x%p failures %u rate 0x%x" 960 " status 0x%x", 961 result->id, skb, result->ack_failures, 962 result->rate_class_index, result->status); 963 964 /* return the packet to the stack */ 965 skb_queue_tail(&wl->deferred_tx_queue, skb); 966 queue_work(wl->freezable_wq, &wl->netstack_work); 967 wl1271_free_tx_id(wl, result->id); 968} 969 970/* Called upon reception of a TX complete interrupt */ 971int wlcore_tx_complete(struct wl1271 *wl) 972{ 973 struct wl1271_acx_mem_map *memmap = wl->target_mem_map; 974 u32 count, fw_counter; 975 u32 i; 976 int ret; 977 978 /* read the tx results from the chipset */ 979 ret = wlcore_read(wl, le32_to_cpu(memmap->tx_result), 980 wl->tx_res_if, sizeof(*wl->tx_res_if), false); 981 if (ret < 0) 982 goto out; 983 984 fw_counter = le32_to_cpu(wl->tx_res_if->tx_result_fw_counter); 985 986 /* write host counter to chipset (to ack) */ 987 ret = wlcore_write32(wl, le32_to_cpu(memmap->tx_result) + 988 offsetof(struct wl1271_tx_hw_res_if, 989 tx_result_host_counter), fw_counter); 990 if (ret < 0) 991 goto out; 992 993 count = fw_counter - wl->tx_results_count; 994 wl1271_debug(DEBUG_TX, "tx_complete received, packets: %d", count); 995 996 /* verify that the result buffer is not getting overrun */ 997 if (unlikely(count > TX_HW_RESULT_QUEUE_LEN)) 998 wl1271_warning("TX result overflow from chipset: %d", count); 999 1000 /* process the results */ 1001 for (i = 0; i < count; i++) { 1002 struct wl1271_tx_hw_res_descr *result; 1003 u8 offset = wl->tx_results_count & TX_HW_RESULT_QUEUE_LEN_MASK; 1004 1005 /* process the packet */ 1006 result = &(wl->tx_res_if->tx_results_queue[offset]); 1007 wl1271_tx_complete_packet(wl, result); 1008 1009 wl->tx_results_count++; 1010 } 1011 1012out: 1013 return ret; 1014} 1015EXPORT_SYMBOL(wlcore_tx_complete); 1016 1017void wl1271_tx_reset_link_queues(struct wl1271 *wl, u8 hlid) 1018{ 1019 struct sk_buff *skb; 1020 int i; 1021 unsigned long flags; 1022 struct ieee80211_tx_info *info; 1023 int total[NUM_TX_QUEUES]; 1024 struct wl1271_link *lnk = &wl->links[hlid]; 1025 1026 for (i = 0; i < NUM_TX_QUEUES; i++) { 1027 total[i] = 0; 1028 while ((skb = skb_dequeue(&lnk->tx_queue[i]))) { 1029 wl1271_debug(DEBUG_TX, "link freeing skb 0x%p", skb); 1030 1031 if (!wl12xx_is_dummy_packet(wl, skb)) { 1032 info = IEEE80211_SKB_CB(skb); 1033 info->status.rates[0].idx = -1; 1034 info->status.rates[0].count = 0; 1035 ieee80211_tx_status_ni(wl->hw, skb); 1036 } 1037 1038 total[i]++; 1039 } 1040 } 1041 1042 spin_lock_irqsave(&wl->wl_lock, flags); 1043 for (i = 0; i < NUM_TX_QUEUES; i++) { 1044 wl->tx_queue_count[i] -= total[i]; 1045 if (lnk->wlvif) 1046 lnk->wlvif->tx_queue_count[i] -= total[i]; 1047 } 1048 spin_unlock_irqrestore(&wl->wl_lock, flags); 1049 1050 wl1271_handle_tx_low_watermark(wl); 1051} 1052 1053/* caller must hold wl->mutex and TX must be stopped */ 1054void wl12xx_tx_reset_wlvif(struct wl1271 *wl, struct wl12xx_vif *wlvif) 1055{ 1056 int i; 1057 1058 /* TX failure */ 1059 for_each_set_bit(i, wlvif->links_map, wl->num_links) { 1060 if (wlvif->bss_type == BSS_TYPE_AP_BSS && 1061 i != wlvif->ap.bcast_hlid && i != wlvif->ap.global_hlid) { 1062 /* this calls wl12xx_free_link */ 1063 wl1271_free_sta(wl, wlvif, i); 1064 } else { 1065 u8 hlid = i; 1066 wl12xx_free_link(wl, wlvif, &hlid); 1067 } 1068 } 1069 wlvif->last_tx_hlid = 0; 1070 1071 for (i = 0; i < NUM_TX_QUEUES; i++) 1072 wlvif->tx_queue_count[i] = 0; 1073} 1074/* caller must hold wl->mutex and TX must be stopped */ 1075void wl12xx_tx_reset(struct wl1271 *wl) 1076{ 1077 int i; 1078 struct sk_buff *skb; 1079 struct ieee80211_tx_info *info; 1080 1081 /* only reset the queues if something bad happened */ 1082 if (wl1271_tx_total_queue_count(wl) != 0) { 1083 for (i = 0; i < wl->num_links; i++) 1084 wl1271_tx_reset_link_queues(wl, i); 1085 1086 for (i = 0; i < NUM_TX_QUEUES; i++) 1087 wl->tx_queue_count[i] = 0; 1088 } 1089 1090 /* 1091 * Make sure the driver is at a consistent state, in case this 1092 * function is called from a context other than interface removal. 1093 * This call will always wake the TX queues. 1094 */ 1095 wl1271_handle_tx_low_watermark(wl); 1096 1097 for (i = 0; i < wl->num_tx_desc; i++) { 1098 if (wl->tx_frames[i] == NULL) 1099 continue; 1100 1101 skb = wl->tx_frames[i]; 1102 wl1271_free_tx_id(wl, i); 1103 wl1271_debug(DEBUG_TX, "freeing skb 0x%p", skb); 1104 1105 if (!wl12xx_is_dummy_packet(wl, skb)) { 1106 /* 1107 * Remove private headers before passing the skb to 1108 * mac80211 1109 */ 1110 info = IEEE80211_SKB_CB(skb); 1111 skb_pull(skb, sizeof(struct wl1271_tx_hw_descr)); 1112 if ((wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE) && 1113 info->control.hw_key && 1114 info->control.hw_key->cipher == 1115 WLAN_CIPHER_SUITE_TKIP) { 1116 int hdrlen = ieee80211_get_hdrlen_from_skb(skb); 1117 memmove(skb->data + WL1271_EXTRA_SPACE_TKIP, 1118 skb->data, hdrlen); 1119 skb_pull(skb, WL1271_EXTRA_SPACE_TKIP); 1120 } 1121 1122 info->status.rates[0].idx = -1; 1123 info->status.rates[0].count = 0; 1124 1125 ieee80211_tx_status_ni(wl->hw, skb); 1126 } 1127 } 1128} 1129 1130#define WL1271_TX_FLUSH_TIMEOUT 500000 1131 1132/* caller must *NOT* hold wl->mutex */ 1133void wl1271_tx_flush(struct wl1271 *wl) 1134{ 1135 unsigned long timeout, start_time; 1136 int i; 1137 start_time = jiffies; 1138 timeout = start_time + usecs_to_jiffies(WL1271_TX_FLUSH_TIMEOUT); 1139 1140 /* only one flush should be in progress, for consistent queue state */ 1141 mutex_lock(&wl->flush_mutex); 1142 1143 mutex_lock(&wl->mutex); 1144 if (wl->tx_frames_cnt == 0 && wl1271_tx_total_queue_count(wl) == 0) { 1145 mutex_unlock(&wl->mutex); 1146 goto out; 1147 } 1148 1149 wlcore_stop_queues(wl, WLCORE_QUEUE_STOP_REASON_FLUSH); 1150 1151 while (!time_after(jiffies, timeout)) { 1152 wl1271_debug(DEBUG_MAC80211, "flushing tx buffer: %d %d", 1153 wl->tx_frames_cnt, 1154 wl1271_tx_total_queue_count(wl)); 1155 1156 /* force Tx and give the driver some time to flush data */ 1157 mutex_unlock(&wl->mutex); 1158 if (wl1271_tx_total_queue_count(wl)) 1159 wl1271_tx_work(&wl->tx_work); 1160 msleep(20); 1161 mutex_lock(&wl->mutex); 1162 1163 if ((wl->tx_frames_cnt == 0) && 1164 (wl1271_tx_total_queue_count(wl) == 0)) { 1165 wl1271_debug(DEBUG_MAC80211, "tx flush took %d ms", 1166 jiffies_to_msecs(jiffies - start_time)); 1167 goto out_wake; 1168 } 1169 } 1170 1171 wl1271_warning("Unable to flush all TX buffers, " 1172 "timed out (timeout %d ms", 1173 WL1271_TX_FLUSH_TIMEOUT / 1000); 1174 1175 /* forcibly flush all Tx buffers on our queues */ 1176 for (i = 0; i < wl->num_links; i++) 1177 wl1271_tx_reset_link_queues(wl, i); 1178 1179out_wake: 1180 wlcore_wake_queues(wl, WLCORE_QUEUE_STOP_REASON_FLUSH); 1181 mutex_unlock(&wl->mutex); 1182out: 1183 mutex_unlock(&wl->flush_mutex); 1184} 1185EXPORT_SYMBOL_GPL(wl1271_tx_flush); 1186 1187u32 wl1271_tx_min_rate_get(struct wl1271 *wl, u32 rate_set) 1188{ 1189 if (WARN_ON(!rate_set)) 1190 return 0; 1191 1192 return BIT(__ffs(rate_set)); 1193} 1194EXPORT_SYMBOL_GPL(wl1271_tx_min_rate_get); 1195 1196void wlcore_stop_queue_locked(struct wl1271 *wl, struct wl12xx_vif *wlvif, 1197 u8 queue, enum wlcore_queue_stop_reason reason) 1198{ 1199 int hwq = wlcore_tx_get_mac80211_queue(wlvif, queue); 1200 bool stopped = !!wl->queue_stop_reasons[hwq]; 1201 1202 /* queue should not be stopped for this reason */ 1203 WARN_ON_ONCE(test_and_set_bit(reason, &wl->queue_stop_reasons[hwq])); 1204 1205 if (stopped) 1206 return; 1207 1208 ieee80211_stop_queue(wl->hw, hwq); 1209} 1210 1211void wlcore_stop_queue(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 queue, 1212 enum wlcore_queue_stop_reason reason) 1213{ 1214 unsigned long flags; 1215 1216 spin_lock_irqsave(&wl->wl_lock, flags); 1217 wlcore_stop_queue_locked(wl, wlvif, queue, reason); 1218 spin_unlock_irqrestore(&wl->wl_lock, flags); 1219} 1220 1221void wlcore_wake_queue(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 queue, 1222 enum wlcore_queue_stop_reason reason) 1223{ 1224 unsigned long flags; 1225 int hwq = wlcore_tx_get_mac80211_queue(wlvif, queue); 1226 1227 spin_lock_irqsave(&wl->wl_lock, flags); 1228 1229 /* queue should not be clear for this reason */ 1230 WARN_ON_ONCE(!test_and_clear_bit(reason, &wl->queue_stop_reasons[hwq])); 1231 1232 if (wl->queue_stop_reasons[hwq]) 1233 goto out; 1234 1235 ieee80211_wake_queue(wl->hw, hwq); 1236 1237out: 1238 spin_unlock_irqrestore(&wl->wl_lock, flags); 1239} 1240 1241void wlcore_stop_queues(struct wl1271 *wl, 1242 enum wlcore_queue_stop_reason reason) 1243{ 1244 int i; 1245 unsigned long flags; 1246 1247 spin_lock_irqsave(&wl->wl_lock, flags); 1248 1249 /* mark all possible queues as stopped */ 1250 for (i = 0; i < WLCORE_NUM_MAC_ADDRESSES * NUM_TX_QUEUES; i++) 1251 WARN_ON_ONCE(test_and_set_bit(reason, 1252 &wl->queue_stop_reasons[i])); 1253 1254 /* use the global version to make sure all vifs in mac80211 we don't 1255 * know are stopped. 1256 */ 1257 ieee80211_stop_queues(wl->hw); 1258 1259 spin_unlock_irqrestore(&wl->wl_lock, flags); 1260} 1261 1262void wlcore_wake_queues(struct wl1271 *wl, 1263 enum wlcore_queue_stop_reason reason) 1264{ 1265 int i; 1266 unsigned long flags; 1267 1268 spin_lock_irqsave(&wl->wl_lock, flags); 1269 1270 /* mark all possible queues as awake */ 1271 for (i = 0; i < WLCORE_NUM_MAC_ADDRESSES * NUM_TX_QUEUES; i++) 1272 WARN_ON_ONCE(!test_and_clear_bit(reason, 1273 &wl->queue_stop_reasons[i])); 1274 1275 /* use the global version to make sure all vifs in mac80211 we don't 1276 * know are woken up. 1277 */ 1278 ieee80211_wake_queues(wl->hw); 1279 1280 spin_unlock_irqrestore(&wl->wl_lock, flags); 1281} 1282 1283bool wlcore_is_queue_stopped_by_reason(struct wl1271 *wl, 1284 struct wl12xx_vif *wlvif, u8 queue, 1285 enum wlcore_queue_stop_reason reason) 1286{ 1287 unsigned long flags; 1288 bool stopped; 1289 1290 spin_lock_irqsave(&wl->wl_lock, flags); 1291 stopped = wlcore_is_queue_stopped_by_reason_locked(wl, wlvif, queue, 1292 reason); 1293 spin_unlock_irqrestore(&wl->wl_lock, flags); 1294 1295 return stopped; 1296} 1297 1298bool wlcore_is_queue_stopped_by_reason_locked(struct wl1271 *wl, 1299 struct wl12xx_vif *wlvif, u8 queue, 1300 enum wlcore_queue_stop_reason reason) 1301{ 1302 int hwq = wlcore_tx_get_mac80211_queue(wlvif, queue); 1303 1304 assert_spin_locked(&wl->wl_lock); 1305 return test_bit(reason, &wl->queue_stop_reasons[hwq]); 1306} 1307 1308bool wlcore_is_queue_stopped_locked(struct wl1271 *wl, struct wl12xx_vif *wlvif, 1309 u8 queue) 1310{ 1311 int hwq = wlcore_tx_get_mac80211_queue(wlvif, queue); 1312 1313 assert_spin_locked(&wl->wl_lock); 1314 return !!wl->queue_stop_reasons[hwq]; 1315} 1316