1 /* 2 * Copyright (c) 2010-2011 Atheros Communications Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * 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 23 static const u8 ath_mci_duty_cycle[] = { 55, 50, 60, 70, 80, 85, 90, 95, 98 }; 24 25 static struct ath_mci_profile_info* 26 ath_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 41 static 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 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 else 67 mci->voice_priority = 110; 68 } 69 70 return true; 71 } 72 73 static 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 85 void 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 } 101 102 static 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 be 111 * adjusted half of wlan_airtime to ensure that the aggregation can fit 112 * 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 } 118 119 static 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 else 137 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 } else 151 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 BT 158 * to improve WLAN throughput. 159 */ 160 btcoex->duty_cycle = 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 } 184 185 skip_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 else 190 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 * 1000 * 204 (100 - btcoex->duty_cycle) / 100; 205 206 ath9k_hw_btcoex_enable(sc->sc_ah); 207 ath9k_btcoex_timer_resume(sc); 208 } 209 210 static void ath_mci_wait_btcal_done(struct ath_softc *sc) 211 { 212 struct ath_hw *ah = sc->sc_ah; 213 214 /* Stop tx & rx */ 215 ieee80211_stop_queues(sc->hw); 216 ath_stoprecv(sc); 217 ath_drain_all_txq(sc, false); 218 219 /* Wait for cal done */ 220 ar9003_mci_start_reset(ah, ah->curchan); 221 222 /* Resume tx & rx */ 223 ath_startrecv(sc); 224 ieee80211_wake_queues(sc->hw); 225 } 226 227 static void ath_mci_cal_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload) 228 { 229 struct ath_hw *ah = sc->sc_ah; 230 struct ath_common *common = ath9k_hw_common(ah); 231 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci; 232 u32 payload[4] = {0, 0, 0, 0}; 233 234 switch (opcode) { 235 case MCI_GPM_BT_CAL_REQ: 236 if (mci_hw->bt_state == MCI_BT_AWAKE) { 237 mci_hw->bt_state = MCI_BT_CAL_START; 238 ath_mci_wait_btcal_done(sc); 239 } 240 ath_dbg(common, MCI, "MCI State : %d\n", mci_hw->bt_state); 241 break; 242 case MCI_GPM_BT_CAL_GRANT: 243 MCI_GPM_SET_CAL_TYPE(payload, MCI_GPM_WLAN_CAL_DONE); 244 ar9003_mci_send_message(sc->sc_ah, MCI_GPM, 0, payload, 245 16, false, true); 246 break; 247 default: 248 ath_dbg(common, MCI, "Unknown GPM CAL message\n"); 249 break; 250 } 251 } 252 253 static void ath9k_mci_work(struct work_struct *work) 254 { 255 struct ath_softc *sc = container_of(work, struct ath_softc, mci_work); 256 257 ath_mci_update_scheme(sc); 258 } 259 260 static void ath_mci_update_stomp_txprio(u8 cur_txprio, u8 *stomp_prio) 261 { 262 if (cur_txprio < stomp_prio[ATH_BTCOEX_STOMP_NONE]) 263 stomp_prio[ATH_BTCOEX_STOMP_NONE] = cur_txprio; 264 265 if (cur_txprio > stomp_prio[ATH_BTCOEX_STOMP_ALL]) 266 stomp_prio[ATH_BTCOEX_STOMP_ALL] = cur_txprio; 267 268 if ((cur_txprio > ATH_MCI_HI_PRIO) && 269 (cur_txprio < stomp_prio[ATH_BTCOEX_STOMP_LOW])) 270 stomp_prio[ATH_BTCOEX_STOMP_LOW] = cur_txprio; 271 } 272 273 static void ath_mci_set_concur_txprio(struct ath_softc *sc) 274 { 275 struct ath_btcoex *btcoex = &sc->btcoex; 276 struct ath_mci_profile *mci = &btcoex->mci; 277 u8 stomp_txprio[] = { 0, 0, 0, 0 }; /* all, low, none, low_ftp */ 278 279 if (mci->num_mgmt) { 280 stomp_txprio[ATH_BTCOEX_STOMP_ALL] = ATH_MCI_INQUIRY_PRIO; 281 if (!mci->num_pan && !mci->num_other_acl) 282 stomp_txprio[ATH_BTCOEX_STOMP_NONE] = 283 ATH_MCI_INQUIRY_PRIO; 284 } else { 285 u8 prof_prio[] = { 50, 90, 94, 52 };/* RFCOMM, A2DP, HID, PAN */ 286 287 stomp_txprio[ATH_BTCOEX_STOMP_LOW] = 288 stomp_txprio[ATH_BTCOEX_STOMP_NONE] = 0xff; 289 290 if (mci->num_sco) 291 ath_mci_update_stomp_txprio(mci->voice_priority, 292 stomp_txprio); 293 if (mci->num_other_acl) 294 ath_mci_update_stomp_txprio(prof_prio[0], stomp_txprio); 295 if (mci->num_a2dp) 296 ath_mci_update_stomp_txprio(prof_prio[1], stomp_txprio); 297 if (mci->num_hid) 298 ath_mci_update_stomp_txprio(prof_prio[2], stomp_txprio); 299 if (mci->num_pan) 300 ath_mci_update_stomp_txprio(prof_prio[3], stomp_txprio); 301 302 if (stomp_txprio[ATH_BTCOEX_STOMP_NONE] == 0xff) 303 stomp_txprio[ATH_BTCOEX_STOMP_NONE] = 0; 304 305 if (stomp_txprio[ATH_BTCOEX_STOMP_LOW] == 0xff) 306 stomp_txprio[ATH_BTCOEX_STOMP_LOW] = 0; 307 } 308 ath9k_hw_btcoex_set_concur_txprio(sc->sc_ah, stomp_txprio); 309 } 310 311 static u8 ath_mci_process_profile(struct ath_softc *sc, 312 struct ath_mci_profile_info *info) 313 { 314 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 315 struct ath_btcoex *btcoex = &sc->btcoex; 316 struct ath_mci_profile *mci = &btcoex->mci; 317 struct ath_mci_profile_info *entry = NULL; 318 319 entry = ath_mci_find_profile(mci, info); 320 if (entry) { 321 /* 322 * Two MCI interrupts are generated while connecting to 323 * headset and A2DP profile, but only one MCI interrupt 324 * is generated with last added profile type while disconnecting 325 * both profiles. 326 * So while adding second profile type decrement 327 * the first one. 328 */ 329 if (entry->type != info->type) { 330 DEC_PROF(mci, entry); 331 INC_PROF(mci, info); 332 } 333 memcpy(entry, info, 10); 334 } 335 336 if (info->start) { 337 if (!entry && !ath_mci_add_profile(common, mci, info)) 338 return 0; 339 } else 340 ath_mci_del_profile(common, mci, entry); 341 342 ath_mci_set_concur_txprio(sc); 343 return 1; 344 } 345 346 static u8 ath_mci_process_status(struct ath_softc *sc, 347 struct ath_mci_profile_status *status) 348 { 349 struct ath_btcoex *btcoex = &sc->btcoex; 350 struct ath_mci_profile *mci = &btcoex->mci; 351 struct ath_mci_profile_info info; 352 int i = 0, old_num_mgmt = mci->num_mgmt; 353 354 /* Link status type are not handled */ 355 if (status->is_link) 356 return 0; 357 358 info.conn_handle = status->conn_handle; 359 if (ath_mci_find_profile(mci, &info)) 360 return 0; 361 362 if (status->conn_handle >= ATH_MCI_MAX_PROFILE) 363 return 0; 364 365 if (status->is_critical) 366 __set_bit(status->conn_handle, mci->status); 367 else 368 __clear_bit(status->conn_handle, mci->status); 369 370 mci->num_mgmt = 0; 371 do { 372 if (test_bit(i, mci->status)) 373 mci->num_mgmt++; 374 } while (++i < ATH_MCI_MAX_PROFILE); 375 376 ath_mci_set_concur_txprio(sc); 377 if (old_num_mgmt != mci->num_mgmt) 378 return 1; 379 380 return 0; 381 } 382 383 static void ath_mci_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload) 384 { 385 struct ath_hw *ah = sc->sc_ah; 386 struct ath_mci_profile_info profile_info; 387 struct ath_mci_profile_status profile_status; 388 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 389 u8 major, minor, update_scheme = 0; 390 u32 seq_num; 391 392 if (ar9003_mci_state(ah, MCI_STATE_NEED_FLUSH_BT_INFO) && 393 ar9003_mci_state(ah, MCI_STATE_ENABLE)) { 394 ath_dbg(common, MCI, "(MCI) Need to flush BT profiles\n"); 395 ath_mci_flush_profile(&sc->btcoex.mci); 396 ar9003_mci_state(ah, MCI_STATE_SEND_STATUS_QUERY); 397 } 398 399 switch (opcode) { 400 case MCI_GPM_COEX_VERSION_QUERY: 401 ar9003_mci_state(ah, MCI_STATE_SEND_WLAN_COEX_VERSION); 402 break; 403 case MCI_GPM_COEX_VERSION_RESPONSE: 404 major = *(rx_payload + MCI_GPM_COEX_B_MAJOR_VERSION); 405 minor = *(rx_payload + MCI_GPM_COEX_B_MINOR_VERSION); 406 ar9003_mci_set_bt_version(ah, major, minor); 407 break; 408 case MCI_GPM_COEX_STATUS_QUERY: 409 ar9003_mci_send_wlan_channels(ah); 410 break; 411 case MCI_GPM_COEX_BT_PROFILE_INFO: 412 memcpy(&profile_info, 413 (rx_payload + MCI_GPM_COEX_B_PROFILE_TYPE), 10); 414 415 if ((profile_info.type == MCI_GPM_COEX_PROFILE_UNKNOWN) || 416 (profile_info.type >= MCI_GPM_COEX_PROFILE_MAX)) { 417 ath_dbg(common, MCI, 418 "Illegal profile type = %d, state = %d\n", 419 profile_info.type, 420 profile_info.start); 421 break; 422 } 423 424 update_scheme += ath_mci_process_profile(sc, &profile_info); 425 break; 426 case MCI_GPM_COEX_BT_STATUS_UPDATE: 427 profile_status.is_link = *(rx_payload + 428 MCI_GPM_COEX_B_STATUS_TYPE); 429 profile_status.conn_handle = *(rx_payload + 430 MCI_GPM_COEX_B_STATUS_LINKID); 431 profile_status.is_critical = *(rx_payload + 432 MCI_GPM_COEX_B_STATUS_STATE); 433 434 seq_num = *((u32 *)(rx_payload + 12)); 435 ath_dbg(common, MCI, 436 "BT_Status_Update: is_link=%d, linkId=%d, state=%d, SEQ=%u\n", 437 profile_status.is_link, profile_status.conn_handle, 438 profile_status.is_critical, seq_num); 439 440 update_scheme += ath_mci_process_status(sc, &profile_status); 441 break; 442 default: 443 ath_dbg(common, MCI, "Unknown GPM COEX message = 0x%02x\n", opcode); 444 break; 445 } 446 if (update_scheme) 447 ieee80211_queue_work(sc->hw, &sc->mci_work); 448 } 449 450 int ath_mci_setup(struct ath_softc *sc) 451 { 452 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 453 struct ath_mci_coex *mci = &sc->mci_coex; 454 struct ath_mci_buf *buf = &mci->sched_buf; 455 int ret; 456 457 buf->bf_addr = dma_alloc_coherent(sc->dev, 458 ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE, 459 &buf->bf_paddr, GFP_KERNEL); 460 461 if (buf->bf_addr == NULL) { 462 ath_dbg(common, FATAL, "MCI buffer alloc failed\n"); 463 return -ENOMEM; 464 } 465 466 memset(buf->bf_addr, MCI_GPM_RSVD_PATTERN, 467 ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE); 468 469 mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE; 470 471 mci->gpm_buf.bf_len = ATH_MCI_GPM_BUF_SIZE; 472 mci->gpm_buf.bf_addr = (u8 *)mci->sched_buf.bf_addr + mci->sched_buf.bf_len; 473 mci->gpm_buf.bf_paddr = mci->sched_buf.bf_paddr + mci->sched_buf.bf_len; 474 475 ret = ar9003_mci_setup(sc->sc_ah, mci->gpm_buf.bf_paddr, 476 mci->gpm_buf.bf_addr, (mci->gpm_buf.bf_len >> 4), 477 mci->sched_buf.bf_paddr); 478 if (ret) { 479 ath_err(common, "Failed to initialize MCI\n"); 480 return ret; 481 } 482 483 INIT_WORK(&sc->mci_work, ath9k_mci_work); 484 ath_dbg(common, MCI, "MCI Initialized\n"); 485 486 return 0; 487 } 488 489 void ath_mci_cleanup(struct ath_softc *sc) 490 { 491 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 492 struct ath_hw *ah = sc->sc_ah; 493 struct ath_mci_coex *mci = &sc->mci_coex; 494 struct ath_mci_buf *buf = &mci->sched_buf; 495 496 if (buf->bf_addr) 497 dma_free_coherent(sc->dev, 498 ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE, 499 buf->bf_addr, buf->bf_paddr); 500 501 ar9003_mci_cleanup(ah); 502 503 ath_dbg(common, MCI, "MCI De-Initialized\n"); 504 } 505 506 void ath_mci_intr(struct ath_softc *sc) 507 { 508 struct ath_mci_coex *mci = &sc->mci_coex; 509 struct ath_hw *ah = sc->sc_ah; 510 struct ath_common *common = ath9k_hw_common(ah); 511 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci; 512 u32 mci_int, mci_int_rxmsg; 513 u32 offset, subtype, opcode; 514 u32 *pgpm; 515 u32 more_data = MCI_GPM_MORE; 516 bool skip_gpm = false; 517 518 ar9003_mci_get_interrupt(sc->sc_ah, &mci_int, &mci_int_rxmsg); 519 520 if (ar9003_mci_state(ah, MCI_STATE_ENABLE) == 0) { 521 ar9003_mci_get_next_gpm_offset(ah, true, NULL); 522 return; 523 } 524 525 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE) { 526 u32 payload[4] = { 0xffffffff, 0xffffffff, 527 0xffffffff, 0xffffff00}; 528 529 /* 530 * The following REMOTE_RESET and SYS_WAKING used to sent 531 * only when BT wake up. Now they are always sent, as a 532 * recovery method to reset BT MCI's RX alignment. 533 */ 534 ar9003_mci_send_message(ah, MCI_REMOTE_RESET, 0, 535 payload, 16, true, false); 536 ar9003_mci_send_message(ah, MCI_SYS_WAKING, 0, 537 NULL, 0, true, false); 538 539 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE; 540 ar9003_mci_state(ah, MCI_STATE_RESET_REQ_WAKE); 541 542 /* 543 * always do this for recovery and 2G/5G toggling and LNA_TRANS 544 */ 545 ar9003_mci_state(ah, MCI_STATE_SET_BT_AWAKE); 546 } 547 548 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING) { 549 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING; 550 551 if ((mci_hw->bt_state == MCI_BT_SLEEP) && 552 (ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP) != 553 MCI_BT_SLEEP)) 554 ar9003_mci_state(ah, MCI_STATE_SET_BT_AWAKE); 555 } 556 557 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING) { 558 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING; 559 560 if ((mci_hw->bt_state == MCI_BT_AWAKE) && 561 (ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP) != 562 MCI_BT_AWAKE)) 563 mci_hw->bt_state = MCI_BT_SLEEP; 564 } 565 566 if ((mci_int & AR_MCI_INTERRUPT_RX_INVALID_HDR) || 567 (mci_int & AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT)) { 568 ar9003_mci_state(ah, MCI_STATE_RECOVER_RX); 569 skip_gpm = true; 570 } 571 572 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SCHD_INFO) { 573 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SCHD_INFO; 574 offset = ar9003_mci_state(ah, MCI_STATE_LAST_SCHD_MSG_OFFSET); 575 } 576 577 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_GPM) { 578 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_GPM; 579 580 while (more_data == MCI_GPM_MORE) { 581 582 pgpm = mci->gpm_buf.bf_addr; 583 offset = ar9003_mci_get_next_gpm_offset(ah, false, 584 &more_data); 585 586 if (offset == MCI_GPM_INVALID) 587 break; 588 589 pgpm += (offset >> 2); 590 591 /* 592 * The first dword is timer. 593 * The real data starts from 2nd dword. 594 */ 595 subtype = MCI_GPM_TYPE(pgpm); 596 opcode = MCI_GPM_OPCODE(pgpm); 597 598 if (skip_gpm) 599 goto recycle; 600 601 if (MCI_GPM_IS_CAL_TYPE(subtype)) { 602 ath_mci_cal_msg(sc, subtype, (u8 *)pgpm); 603 } else { 604 switch (subtype) { 605 case MCI_GPM_COEX_AGENT: 606 ath_mci_msg(sc, opcode, (u8 *)pgpm); 607 break; 608 default: 609 break; 610 } 611 } 612 recycle: 613 MCI_GPM_RECYCLE(pgpm); 614 } 615 } 616 617 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_HW_MSG_MASK) { 618 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_LNA_CONTROL) 619 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_LNA_CONTROL; 620 621 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_LNA_INFO) 622 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_LNA_INFO; 623 624 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_INFO) { 625 int value_dbm = MS(mci_hw->cont_status, 626 AR_MCI_CONT_RSSI_POWER); 627 628 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_INFO; 629 630 ath_dbg(common, MCI, 631 "MCI CONT_INFO: (%s) pri = %d pwr = %d dBm\n", 632 MS(mci_hw->cont_status, AR_MCI_CONT_TXRX) ? 633 "tx" : "rx", 634 MS(mci_hw->cont_status, AR_MCI_CONT_PRIORITY), 635 value_dbm); 636 } 637 638 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_NACK) 639 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_NACK; 640 641 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_RST) 642 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_RST; 643 } 644 645 if ((mci_int & AR_MCI_INTERRUPT_RX_INVALID_HDR) || 646 (mci_int & AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT)) { 647 mci_int &= ~(AR_MCI_INTERRUPT_RX_INVALID_HDR | 648 AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT); 649 ath_mci_msg(sc, MCI_GPM_COEX_NOOP, NULL); 650 } 651 } 652 653 void ath_mci_enable(struct ath_softc *sc) 654 { 655 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 656 657 if (!common->btcoex_enabled) 658 return; 659 660 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) 661 sc->sc_ah->imask |= ATH9K_INT_MCI; 662 } 663 664 void ath9k_mci_update_wlan_channels(struct ath_softc *sc, bool allow_all) 665 { 666 struct ath_hw *ah = sc->sc_ah; 667 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci; 668 struct ath9k_channel *chan = ah->curchan; 669 u32 channelmap[] = {0x00000000, 0xffff0000, 0xffffffff, 0x7fffffff}; 670 int i; 671 s16 chan_start, chan_end; 672 u16 wlan_chan; 673 674 if (!chan || !IS_CHAN_2GHZ(chan)) 675 return; 676 677 if (allow_all) 678 goto send_wlan_chan; 679 680 wlan_chan = chan->channel - 2402; 681 682 chan_start = wlan_chan - 10; 683 chan_end = wlan_chan + 10; 684 685 if (chan->chanmode == CHANNEL_G_HT40PLUS) 686 chan_end += 20; 687 else if (chan->chanmode == CHANNEL_G_HT40MINUS) 688 chan_start -= 20; 689 690 /* adjust side band */ 691 chan_start -= 7; 692 chan_end += 7; 693 694 if (chan_start <= 0) 695 chan_start = 0; 696 if (chan_end >= ATH_MCI_NUM_BT_CHANNELS) 697 chan_end = ATH_MCI_NUM_BT_CHANNELS - 1; 698 699 ath_dbg(ath9k_hw_common(ah), MCI, 700 "WLAN current channel %d mask BT channel %d - %d\n", 701 wlan_chan, chan_start, chan_end); 702 703 for (i = chan_start; i < chan_end; i++) 704 MCI_GPM_CLR_CHANNEL_BIT(&channelmap, i); 705 706 send_wlan_chan: 707 /* update and send wlan channels info to BT */ 708 for (i = 0; i < 4; i++) 709 mci->wlan_channels[i] = channelmap[i]; 710 ar9003_mci_send_wlan_channels(ah); 711 ar9003_mci_state(ah, MCI_STATE_SEND_VERSION_QUERY); 712 } 713