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1/*2 * Copyright (c) 2010-2011 Atheros Communications Inc.3 *4 * Permission to use, copy, modify, and/or distribute this software for any5 * purpose with or without fee is hereby granted, provided that the above6 * copyright notice and this permission notice appear in all copies.7 *8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.15 */16 17#include <linux/dma-mapping.h>18#include <linux/slab.h>19 20#include "ath9k.h"21#include "mci.h"22 23static const u8 ath_mci_duty_cycle[] = { 55, 50, 60, 70, 80, 85, 90, 95, 98 };24 25static struct ath_mci_profile_info*26ath_mci_find_profile(struct ath_mci_profile *mci,27 struct ath_mci_profile_info *info)28{29 struct ath_mci_profile_info *entry;30 31 if (list_empty(&mci->info))32 return NULL;33 34 list_for_each_entry(entry, &mci->info, list) {35 if (entry->conn_handle == info->conn_handle)36 return entry;37 }38 return NULL;39}40 41static bool ath_mci_add_profile(struct ath_common *common,42 struct ath_mci_profile *mci,43 struct ath_mci_profile_info *info)44{45 struct ath_mci_profile_info *entry;46 static const u8 voice_priority[] = { 110, 110, 110, 112, 110, 110, 114, 116, 118 };47 48 if ((mci->num_sco == ATH_MCI_MAX_SCO_PROFILE) &&49 (info->type == MCI_GPM_COEX_PROFILE_VOICE))50 return false;51 52 if (((NUM_PROF(mci) - mci->num_sco) == ATH_MCI_MAX_ACL_PROFILE) &&53 (info->type != MCI_GPM_COEX_PROFILE_VOICE))54 return false;55 56 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);57 if (!entry)58 return false;59 60 memcpy(entry, info, 10);61 INC_PROF(mci, info);62 list_add_tail(&entry->list, &mci->info);63 if (info->type == MCI_GPM_COEX_PROFILE_VOICE) {64 if (info->voice_type < sizeof(voice_priority))65 mci->voice_priority = voice_priority[info->voice_type];66 else67 mci->voice_priority = 110;68 }69 70 return true;71}72 73static void ath_mci_del_profile(struct ath_common *common,74 struct ath_mci_profile *mci,75 struct ath_mci_profile_info *entry)76{77 if (!entry)78 return;79 80 DEC_PROF(mci, entry);81 list_del(&entry->list);82 kfree(entry);83}84 85void ath_mci_flush_profile(struct ath_mci_profile *mci)86{87 struct ath_mci_profile_info *info, *tinfo;88 89 mci->aggr_limit = 0;90 mci->num_mgmt = 0;91 92 if (list_empty(&mci->info))93 return;94 95 list_for_each_entry_safe(info, tinfo, &mci->info, list) {96 list_del(&info->list);97 DEC_PROF(mci, info);98 kfree(info);99 }100}101 102static void ath_mci_adjust_aggr_limit(struct ath_btcoex *btcoex)103{104 struct ath_mci_profile *mci = &btcoex->mci;105 u32 wlan_airtime = btcoex->btcoex_period *106 (100 - btcoex->duty_cycle) / 100;107 108 /*109 * Scale: wlan_airtime is in ms, aggr_limit is in 0.25 ms.110 * When wlan_airtime is less than 4ms, aggregation limit has to be111 * adjusted half of wlan_airtime to ensure that the aggregation can fit112 * without collision with BT traffic.113 */114 if ((wlan_airtime <= 4) &&115 (!mci->aggr_limit || (mci->aggr_limit > (2 * wlan_airtime))))116 mci->aggr_limit = 2 * wlan_airtime;117}118 119static void ath_mci_update_scheme(struct ath_softc *sc)120{121 struct ath_common *common = ath9k_hw_common(sc->sc_ah);122 struct ath_btcoex *btcoex = &sc->btcoex;123 struct ath_mci_profile *mci = &btcoex->mci;124 struct ath9k_hw_mci *mci_hw = &sc->sc_ah->btcoex_hw.mci;125 struct ath_mci_profile_info *info;126 u32 num_profile = NUM_PROF(mci);127 128 if (mci_hw->config & ATH_MCI_CONFIG_DISABLE_TUNING)129 goto skip_tuning;130 131 mci->aggr_limit = 0;132 btcoex->duty_cycle = ath_mci_duty_cycle[num_profile];133 btcoex->btcoex_period = ATH_MCI_DEF_BT_PERIOD;134 if (NUM_PROF(mci))135 btcoex->bt_stomp_type = ATH_BTCOEX_STOMP_LOW;136 else137 btcoex->bt_stomp_type = mci->num_mgmt ? ATH_BTCOEX_STOMP_ALL :138 ATH_BTCOEX_STOMP_LOW;139 140 if (num_profile == 1) {141 info = list_first_entry(&mci->info,142 struct ath_mci_profile_info,143 list);144 if (mci->num_sco) {145 if (info->T == 12)146 mci->aggr_limit = 8;147 else if (info->T == 6) {148 mci->aggr_limit = 6;149 btcoex->duty_cycle = 30;150 } else151 mci->aggr_limit = 6;152 ath_dbg(common, MCI,153 "Single SCO, aggregation limit %d 1/4 ms\n",154 mci->aggr_limit);155 } else if (mci->num_pan || mci->num_other_acl) {156 /*157 * For single PAN/FTP profile, allocate 35% for BT158 * to improve WLAN throughput.159 */160 btcoex->duty_cycle = AR_SREV_9565(sc->sc_ah) ? 40 : 35;161 btcoex->btcoex_period = 53;162 ath_dbg(common, MCI,163 "Single PAN/FTP bt period %d ms dutycycle %d\n",164 btcoex->duty_cycle, btcoex->btcoex_period);165 } else if (mci->num_hid) {166 btcoex->duty_cycle = 30;167 mci->aggr_limit = 6;168 ath_dbg(common, MCI,169 "Multiple attempt/timeout single HID "170 "aggregation limit 1.5 ms dutycycle 30%%\n");171 }172 } else if (num_profile == 2) {173 if (mci->num_hid == 2)174 btcoex->duty_cycle = 30;175 mci->aggr_limit = 6;176 ath_dbg(common, MCI,177 "Two BT profiles aggr limit 1.5 ms dutycycle %d%%\n",178 btcoex->duty_cycle);179 } else if (num_profile >= 3) {180 mci->aggr_limit = 4;181 ath_dbg(common, MCI,182 "Three or more profiles aggregation limit 1 ms\n");183 }184 185skip_tuning:186 if (IS_CHAN_2GHZ(sc->sc_ah->curchan)) {187 if (IS_CHAN_HT(sc->sc_ah->curchan))188 ath_mci_adjust_aggr_limit(btcoex);189 else190 btcoex->btcoex_period >>= 1;191 }192 193 ath9k_btcoex_timer_pause(sc);194 ath9k_hw_btcoex_disable(sc->sc_ah);195 196 if (IS_CHAN_5GHZ(sc->sc_ah->curchan))197 return;198 199 btcoex->duty_cycle += (mci->num_bdr ? ATH_MCI_BDR_DUTY_CYCLE : 0);200 if (btcoex->duty_cycle > ATH_MCI_MAX_DUTY_CYCLE)201 btcoex->duty_cycle = ATH_MCI_MAX_DUTY_CYCLE;202 203 btcoex->btcoex_no_stomp = btcoex->btcoex_period *204 (100 - btcoex->duty_cycle) / 100;205 206 ath9k_hw_btcoex_enable(sc->sc_ah);207 ath9k_btcoex_timer_resume(sc);208}209 210static void ath_mci_cal_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload)211{212 struct ath_hw *ah = sc->sc_ah;213 struct ath_common *common = ath9k_hw_common(ah);214 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;215 u32 payload[4] = {0, 0, 0, 0};216 217 switch (opcode) {218 case MCI_GPM_BT_CAL_REQ:219 if (mci_hw->bt_state == MCI_BT_AWAKE) {220 mci_hw->bt_state = MCI_BT_CAL_START;221 ath9k_queue_reset(sc, RESET_TYPE_MCI);222 }223 ath_dbg(common, MCI, "MCI State : %d\n", mci_hw->bt_state);224 break;225 case MCI_GPM_BT_CAL_GRANT:226 MCI_GPM_SET_CAL_TYPE(payload, MCI_GPM_WLAN_CAL_DONE);227 ar9003_mci_send_message(sc->sc_ah, MCI_GPM, 0, payload,228 16, false, true);229 break;230 default:231 ath_dbg(common, MCI, "Unknown GPM CAL message\n");232 break;233 }234}235 236static void ath9k_mci_work(struct work_struct *work)237{238 struct ath_softc *sc = container_of(work, struct ath_softc, mci_work);239 240 ath_mci_update_scheme(sc);241}242 243static void ath_mci_update_stomp_txprio(u8 cur_txprio, u8 *stomp_prio)244{245 if (cur_txprio < stomp_prio[ATH_BTCOEX_STOMP_NONE])246 stomp_prio[ATH_BTCOEX_STOMP_NONE] = cur_txprio;247 248 if (cur_txprio > stomp_prio[ATH_BTCOEX_STOMP_ALL])249 stomp_prio[ATH_BTCOEX_STOMP_ALL] = cur_txprio;250 251 if ((cur_txprio > ATH_MCI_HI_PRIO) &&252 (cur_txprio < stomp_prio[ATH_BTCOEX_STOMP_LOW]))253 stomp_prio[ATH_BTCOEX_STOMP_LOW] = cur_txprio;254}255 256static void ath_mci_set_concur_txprio(struct ath_softc *sc)257{258 struct ath_btcoex *btcoex = &sc->btcoex;259 struct ath_mci_profile *mci = &btcoex->mci;260 u8 stomp_txprio[ATH_BTCOEX_STOMP_MAX];261 262 memset(stomp_txprio, 0, sizeof(stomp_txprio));263 if (mci->num_mgmt) {264 stomp_txprio[ATH_BTCOEX_STOMP_ALL] = ATH_MCI_INQUIRY_PRIO;265 if (!mci->num_pan && !mci->num_other_acl)266 stomp_txprio[ATH_BTCOEX_STOMP_NONE] =267 ATH_MCI_INQUIRY_PRIO;268 } else {269 static const u8 prof_prio[] = {270 50, 90, 94, 52271 }; /* RFCOMM, A2DP, HID, PAN */272 273 stomp_txprio[ATH_BTCOEX_STOMP_LOW] =274 stomp_txprio[ATH_BTCOEX_STOMP_NONE] = 0xff;275 276 if (mci->num_sco)277 ath_mci_update_stomp_txprio(mci->voice_priority,278 stomp_txprio);279 if (mci->num_other_acl)280 ath_mci_update_stomp_txprio(prof_prio[0], stomp_txprio);281 if (mci->num_a2dp)282 ath_mci_update_stomp_txprio(prof_prio[1], stomp_txprio);283 if (mci->num_hid)284 ath_mci_update_stomp_txprio(prof_prio[2], stomp_txprio);285 if (mci->num_pan)286 ath_mci_update_stomp_txprio(prof_prio[3], stomp_txprio);287 288 if (stomp_txprio[ATH_BTCOEX_STOMP_NONE] == 0xff)289 stomp_txprio[ATH_BTCOEX_STOMP_NONE] = 0;290 291 if (stomp_txprio[ATH_BTCOEX_STOMP_LOW] == 0xff)292 stomp_txprio[ATH_BTCOEX_STOMP_LOW] = 0;293 }294 ath9k_hw_btcoex_set_concur_txprio(sc->sc_ah, stomp_txprio);295}296 297static u8 ath_mci_process_profile(struct ath_softc *sc,298 struct ath_mci_profile_info *info)299{300 struct ath_common *common = ath9k_hw_common(sc->sc_ah);301 struct ath_btcoex *btcoex = &sc->btcoex;302 struct ath_mci_profile *mci = &btcoex->mci;303 struct ath_mci_profile_info *entry = NULL;304 305 entry = ath_mci_find_profile(mci, info);306 if (entry) {307 /*308 * Two MCI interrupts are generated while connecting to309 * headset and A2DP profile, but only one MCI interrupt310 * is generated with last added profile type while disconnecting311 * both profiles.312 * So while adding second profile type decrement313 * the first one.314 */315 if (entry->type != info->type) {316 DEC_PROF(mci, entry);317 INC_PROF(mci, info);318 }319 memcpy(entry, info, 10);320 }321 322 if (info->start) {323 if (!entry && !ath_mci_add_profile(common, mci, info))324 return 0;325 } else326 ath_mci_del_profile(common, mci, entry);327 328 ath_mci_set_concur_txprio(sc);329 return 1;330}331 332static u8 ath_mci_process_status(struct ath_softc *sc,333 struct ath_mci_profile_status *status)334{335 struct ath_btcoex *btcoex = &sc->btcoex;336 struct ath_mci_profile *mci = &btcoex->mci;337 struct ath_mci_profile_info info;338 int i = 0, old_num_mgmt = mci->num_mgmt;339 340 /* Link status type are not handled */341 if (status->is_link)342 return 0;343 344 info.conn_handle = status->conn_handle;345 if (ath_mci_find_profile(mci, &info))346 return 0;347 348 if (status->conn_handle >= ATH_MCI_MAX_PROFILE)349 return 0;350 351 if (status->is_critical)352 __set_bit(status->conn_handle, mci->status);353 else354 __clear_bit(status->conn_handle, mci->status);355 356 mci->num_mgmt = 0;357 do {358 if (test_bit(i, mci->status))359 mci->num_mgmt++;360 } while (++i < ATH_MCI_MAX_PROFILE);361 362 ath_mci_set_concur_txprio(sc);363 if (old_num_mgmt != mci->num_mgmt)364 return 1;365 366 return 0;367}368 369static void ath_mci_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload)370{371 struct ath_hw *ah = sc->sc_ah;372 struct ath_mci_profile_info profile_info;373 struct ath_mci_profile_status profile_status;374 struct ath_common *common = ath9k_hw_common(sc->sc_ah);375 u8 major, minor, update_scheme = 0;376 u32 seq_num;377 378 if (ar9003_mci_state(ah, MCI_STATE_NEED_FLUSH_BT_INFO) &&379 ar9003_mci_state(ah, MCI_STATE_ENABLE)) {380 ath_dbg(common, MCI, "(MCI) Need to flush BT profiles\n");381 ath_mci_flush_profile(&sc->btcoex.mci);382 ar9003_mci_state(ah, MCI_STATE_SEND_STATUS_QUERY);383 }384 385 switch (opcode) {386 case MCI_GPM_COEX_VERSION_QUERY:387 ar9003_mci_state(ah, MCI_STATE_SEND_WLAN_COEX_VERSION);388 break;389 case MCI_GPM_COEX_VERSION_RESPONSE:390 major = *(rx_payload + MCI_GPM_COEX_B_MAJOR_VERSION);391 minor = *(rx_payload + MCI_GPM_COEX_B_MINOR_VERSION);392 ar9003_mci_set_bt_version(ah, major, minor);393 break;394 case MCI_GPM_COEX_STATUS_QUERY:395 ar9003_mci_send_wlan_channels(ah);396 break;397 case MCI_GPM_COEX_BT_PROFILE_INFO:398 memcpy(&profile_info,399 (rx_payload + MCI_GPM_COEX_B_PROFILE_TYPE), 10);400 401 if ((profile_info.type == MCI_GPM_COEX_PROFILE_UNKNOWN) ||402 (profile_info.type >= MCI_GPM_COEX_PROFILE_MAX)) {403 ath_dbg(common, MCI,404 "Illegal profile type = %d, state = %d\n",405 profile_info.type,406 profile_info.start);407 break;408 }409 410 update_scheme += ath_mci_process_profile(sc, &profile_info);411 break;412 case MCI_GPM_COEX_BT_STATUS_UPDATE:413 profile_status.is_link = *(rx_payload +414 MCI_GPM_COEX_B_STATUS_TYPE);415 profile_status.conn_handle = *(rx_payload +416 MCI_GPM_COEX_B_STATUS_LINKID);417 profile_status.is_critical = *(rx_payload +418 MCI_GPM_COEX_B_STATUS_STATE);419 420 seq_num = *((u32 *)(rx_payload + 12));421 ath_dbg(common, MCI,422 "BT_Status_Update: is_link=%d, linkId=%d, state=%d, SEQ=%u\n",423 profile_status.is_link, profile_status.conn_handle,424 profile_status.is_critical, seq_num);425 426 update_scheme += ath_mci_process_status(sc, &profile_status);427 break;428 default:429 ath_dbg(common, MCI, "Unknown GPM COEX message = 0x%02x\n", opcode);430 break;431 }432 if (update_scheme)433 ieee80211_queue_work(sc->hw, &sc->mci_work);434}435 436int ath_mci_setup(struct ath_softc *sc)437{438 struct ath_common *common = ath9k_hw_common(sc->sc_ah);439 struct ath_mci_coex *mci = &sc->mci_coex;440 struct ath_mci_buf *buf = &mci->sched_buf;441 int ret;442 443 buf->bf_addr = dmam_alloc_coherent(sc->dev,444 ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE,445 &buf->bf_paddr, GFP_KERNEL);446 447 if (buf->bf_addr == NULL) {448 ath_dbg(common, FATAL, "MCI buffer alloc failed\n");449 return -ENOMEM;450 }451 452 memset(buf->bf_addr, MCI_GPM_RSVD_PATTERN,453 ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE);454 455 mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE;456 457 mci->gpm_buf.bf_len = ATH_MCI_GPM_BUF_SIZE;458 mci->gpm_buf.bf_addr = mci->sched_buf.bf_addr + mci->sched_buf.bf_len;459 mci->gpm_buf.bf_paddr = mci->sched_buf.bf_paddr + mci->sched_buf.bf_len;460 461 ret = ar9003_mci_setup(sc->sc_ah, mci->gpm_buf.bf_paddr,462 mci->gpm_buf.bf_addr, (mci->gpm_buf.bf_len >> 4),463 mci->sched_buf.bf_paddr);464 if (ret) {465 ath_err(common, "Failed to initialize MCI\n");466 return ret;467 }468 469 INIT_WORK(&sc->mci_work, ath9k_mci_work);470 ath_dbg(common, MCI, "MCI Initialized\n");471 472 return 0;473}474 475void ath_mci_cleanup(struct ath_softc *sc)476{477 struct ath_common *common = ath9k_hw_common(sc->sc_ah);478 struct ath_hw *ah = sc->sc_ah;479 480 ar9003_mci_cleanup(ah);481 482 ath_dbg(common, MCI, "MCI De-Initialized\n");483}484 485void ath_mci_intr(struct ath_softc *sc)486{487 struct ath_mci_coex *mci = &sc->mci_coex;488 struct ath_hw *ah = sc->sc_ah;489 struct ath_common *common = ath9k_hw_common(ah);490 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;491 u32 mci_int, mci_int_rxmsg;492 u32 offset, subtype, opcode;493 u32 *pgpm;494 u32 more_data = MCI_GPM_MORE;495 bool skip_gpm = false;496 497 ar9003_mci_get_interrupt(sc->sc_ah, &mci_int, &mci_int_rxmsg);498 499 if (ar9003_mci_state(ah, MCI_STATE_ENABLE) == 0) {500 ar9003_mci_state(ah, MCI_STATE_INIT_GPM_OFFSET);501 return;502 }503 504 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE) {505 u32 payload[4] = { 0xffffffff, 0xffffffff,506 0xffffffff, 0xffffff00};507 508 /*509 * The following REMOTE_RESET and SYS_WAKING used to sent510 * only when BT wake up. Now they are always sent, as a511 * recovery method to reset BT MCI's RX alignment.512 */513 ar9003_mci_send_message(ah, MCI_REMOTE_RESET, 0,514 payload, 16, true, false);515 ar9003_mci_send_message(ah, MCI_SYS_WAKING, 0,516 NULL, 0, true, false);517 518 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE;519 ar9003_mci_state(ah, MCI_STATE_RESET_REQ_WAKE);520 521 /*522 * always do this for recovery and 2G/5G toggling and LNA_TRANS523 */524 ar9003_mci_state(ah, MCI_STATE_SET_BT_AWAKE);525 }526 527 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING) {528 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING;529 530 if ((mci_hw->bt_state == MCI_BT_SLEEP) &&531 (ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP) !=532 MCI_BT_SLEEP))533 ar9003_mci_state(ah, MCI_STATE_SET_BT_AWAKE);534 }535 536 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING) {537 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING;538 539 if ((mci_hw->bt_state == MCI_BT_AWAKE) &&540 (ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP) !=541 MCI_BT_AWAKE))542 mci_hw->bt_state = MCI_BT_SLEEP;543 }544 545 if ((mci_int & AR_MCI_INTERRUPT_RX_INVALID_HDR) ||546 (mci_int & AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT)) {547 ar9003_mci_state(ah, MCI_STATE_RECOVER_RX);548 skip_gpm = true;549 }550 551 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SCHD_INFO) {552 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SCHD_INFO;553 ar9003_mci_state(ah, MCI_STATE_LAST_SCHD_MSG_OFFSET);554 }555 556 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_GPM) {557 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_GPM;558 559 while (more_data == MCI_GPM_MORE) {560 if (test_bit(ATH_OP_HW_RESET, &common->op_flags))561 return;562 563 pgpm = mci->gpm_buf.bf_addr;564 offset = ar9003_mci_get_next_gpm_offset(ah, &more_data);565 566 if (offset == MCI_GPM_INVALID)567 break;568 569 pgpm += (offset >> 2);570 571 /*572 * The first dword is timer.573 * The real data starts from 2nd dword.574 */575 subtype = MCI_GPM_TYPE(pgpm);576 opcode = MCI_GPM_OPCODE(pgpm);577 578 if (skip_gpm)579 goto recycle;580 581 if (MCI_GPM_IS_CAL_TYPE(subtype)) {582 ath_mci_cal_msg(sc, subtype, (u8 *)pgpm);583 } else {584 switch (subtype) {585 case MCI_GPM_COEX_AGENT:586 ath_mci_msg(sc, opcode, (u8 *)pgpm);587 break;588 default:589 break;590 }591 }592 recycle:593 MCI_GPM_RECYCLE(pgpm);594 }595 }596 597 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_HW_MSG_MASK) {598 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_LNA_CONTROL)599 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_LNA_CONTROL;600 601 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_LNA_INFO)602 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_LNA_INFO;603 604 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_INFO) {605 int value_dbm = MS(mci_hw->cont_status,606 AR_MCI_CONT_RSSI_POWER);607 608 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_INFO;609 610 ath_dbg(common, MCI,611 "MCI CONT_INFO: (%s) pri = %d pwr = %d dBm\n",612 MS(mci_hw->cont_status, AR_MCI_CONT_TXRX) ?613 "tx" : "rx",614 MS(mci_hw->cont_status, AR_MCI_CONT_PRIORITY),615 value_dbm);616 }617 618 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_NACK)619 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_NACK;620 621 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_RST)622 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_RST;623 }624 625 if ((mci_int & AR_MCI_INTERRUPT_RX_INVALID_HDR) ||626 (mci_int & AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT)) {627 mci_int &= ~(AR_MCI_INTERRUPT_RX_INVALID_HDR |628 AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT);629 ath_mci_msg(sc, MCI_GPM_COEX_NOOP, NULL);630 }631}632 633void ath_mci_enable(struct ath_softc *sc)634{635 struct ath_common *common = ath9k_hw_common(sc->sc_ah);636 637 if (!common->btcoex_enabled)638 return;639 640 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI)641 sc->sc_ah->imask |= ATH9K_INT_MCI;642}643 644void ath9k_mci_update_wlan_channels(struct ath_softc *sc, bool allow_all)645{646 struct ath_hw *ah = sc->sc_ah;647 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;648 struct ath9k_channel *chan = ah->curchan;649 u32 channelmap[] = {0x00000000, 0xffff0000, 0xffffffff, 0x7fffffff};650 int i;651 s16 chan_start, chan_end;652 u16 wlan_chan;653 654 if (!chan || !IS_CHAN_2GHZ(chan))655 return;656 657 if (allow_all)658 goto send_wlan_chan;659 660 wlan_chan = chan->channel - 2402;661 662 chan_start = wlan_chan - 10;663 chan_end = wlan_chan + 10;664 665 if (IS_CHAN_HT40PLUS(chan))666 chan_end += 20;667 else if (IS_CHAN_HT40MINUS(chan))668 chan_start -= 20;669 670 /* adjust side band */671 chan_start -= 7;672 chan_end += 7;673 674 if (chan_start <= 0)675 chan_start = 0;676 if (chan_end >= ATH_MCI_NUM_BT_CHANNELS)677 chan_end = ATH_MCI_NUM_BT_CHANNELS - 1;678 679 ath_dbg(ath9k_hw_common(ah), MCI,680 "WLAN current channel %d mask BT channel %d - %d\n",681 wlan_chan, chan_start, chan_end);682 683 for (i = chan_start; i < chan_end; i++)684 MCI_GPM_CLR_CHANNEL_BIT(&channelmap, i);685 686send_wlan_chan:687 /* update and send wlan channels info to BT */688 for (i = 0; i < 4; i++)689 mci->wlan_channels[i] = channelmap[i];690 ar9003_mci_send_wlan_channels(ah);691 ar9003_mci_state(ah, MCI_STATE_SEND_VERSION_QUERY);692}693 694void ath9k_mci_set_txpower(struct ath_softc *sc, bool setchannel,695 bool concur_tx)696{697 struct ath_hw *ah = sc->sc_ah;698 struct ath9k_hw_mci *mci_hw = &sc->sc_ah->btcoex_hw.mci;699 bool old_concur_tx = mci_hw->concur_tx;700 701 if (!(mci_hw->config & ATH_MCI_CONFIG_CONCUR_TX)) {702 mci_hw->concur_tx = false;703 return;704 }705 706 if (!IS_CHAN_2GHZ(ah->curchan))707 return;708 709 if (setchannel) {710 struct ath9k_hw_cal_data *caldata = &sc->cur_chan->caldata;711 if (IS_CHAN_HT40PLUS(ah->curchan) &&712 (ah->curchan->channel > caldata->channel) &&713 (ah->curchan->channel <= caldata->channel + 20))714 return;715 if (IS_CHAN_HT40MINUS(ah->curchan) &&716 (ah->curchan->channel < caldata->channel) &&717 (ah->curchan->channel >= caldata->channel - 20))718 return;719 mci_hw->concur_tx = false;720 } else721 mci_hw->concur_tx = concur_tx;722 723 if (old_concur_tx != mci_hw->concur_tx)724 ath9k_hw_set_txpowerlimit(ah, sc->cur_chan->txpower, false);725}726 727static void ath9k_mci_stomp_audio(struct ath_softc *sc)728{729 struct ath_hw *ah = sc->sc_ah;730 struct ath_btcoex *btcoex = &sc->btcoex;731 struct ath_mci_profile *mci = &btcoex->mci;732 733 if (!mci->num_sco && !mci->num_a2dp)734 return;735 736 if (ah->stats.avgbrssi > 25) {737 btcoex->stomp_audio = 0;738 return;739 }740 741 btcoex->stomp_audio++;742}743void ath9k_mci_update_rssi(struct ath_softc *sc)744{745 struct ath_hw *ah = sc->sc_ah;746 struct ath_btcoex *btcoex = &sc->btcoex;747 struct ath9k_hw_mci *mci_hw = &sc->sc_ah->btcoex_hw.mci;748 749 ath9k_mci_stomp_audio(sc);750 751 if (!(mci_hw->config & ATH_MCI_CONFIG_CONCUR_TX))752 return;753 754 if (ah->stats.avgbrssi >= 40) {755 if (btcoex->rssi_count < 0)756 btcoex->rssi_count = 0;757 if (++btcoex->rssi_count >= ATH_MCI_CONCUR_TX_SWITCH) {758 btcoex->rssi_count = 0;759 ath9k_mci_set_txpower(sc, false, true);760 }761 } else {762 if (btcoex->rssi_count > 0)763 btcoex->rssi_count = 0;764 if (--btcoex->rssi_count <= -ATH_MCI_CONCUR_TX_SWITCH) {765 btcoex->rssi_count = 0;766 ath9k_mci_set_txpower(sc, false, false);767 }768 }769}770