drivers/net/wireless/ath/ath9k/mci.c

   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[] = { 0, 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         list_for_each_entry(entry, &mci->info, list) {
  32                 if (entry->conn_handle == info->conn_handle)
  33                         break;
  34         }
  35         return entry;
  36 }
  37
  38 static bool ath_mci_add_profile(struct ath_common *common,
  39                                 struct ath_mci_profile *mci,
  40                                 struct ath_mci_profile_info *info)
  41 {
  42         struct ath_mci_profile_info *entry;
  43
  44         if ((mci->num_sco == ATH_MCI_MAX_SCO_PROFILE) &&
  45             (info->type == MCI_GPM_COEX_PROFILE_VOICE)) {
  46                 ath_dbg(common, MCI,
  47                         "Too many SCO profile, failed to add new profile\n");
  48                 return false;
  49         }
  50
  51         if (((NUM_PROF(mci) - mci->num_sco) == ATH_MCI_MAX_ACL_PROFILE) &&
  52             (info->type != MCI_GPM_COEX_PROFILE_VOICE)) {
  53                 ath_dbg(common, MCI,
  54                         "Too many ACL profile, failed to add new profile\n");
  55                 return false;
  56         }
  57
  58         entry = ath_mci_find_profile(mci, info);
  59
  60         if (entry)
  61                 memcpy(entry, info, 10);
  62         else {
  63                 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
  64                 if (!entry)
  65                         return false;
  66
  67                 memcpy(entry, info, 10);
  68                 INC_PROF(mci, info);
  69                 list_add_tail(&info->list, &mci->info);
  70         }
  71         return true;
  72 }
  73
  74 static void ath_mci_del_profile(struct ath_common *common,
  75                                 struct ath_mci_profile *mci,
  76                                 struct ath_mci_profile_info *info)
  77 {
  78         struct ath_mci_profile_info *entry;
  79
  80         entry = ath_mci_find_profile(mci, info);
  81
  82         if (!entry) {
  83                 ath_dbg(common, MCI, "Profile to be deleted not found\n");
  84                 return;
  85         }
  86         DEC_PROF(mci, entry);
  87         list_del(&entry->list);
  88         kfree(entry);
  89 }
  90
  91 void ath_mci_flush_profile(struct ath_mci_profile *mci)
  92 {
  93         struct ath_mci_profile_info *info, *tinfo;
  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         mci->aggr_limit = 0;
 101 }
 102
 103 static void ath_mci_adjust_aggr_limit(struct ath_btcoex *btcoex)
 104 {
 105         struct ath_mci_profile *mci = &btcoex->mci;
 106         u32 wlan_airtime = btcoex->btcoex_period *
 107                                 (100 - btcoex->duty_cycle) / 100;
 108
 109         /*
 110          * Scale: wlan_airtime is in ms, aggr_limit is in 0.25 ms.
 111          * When wlan_airtime is less than 4ms, aggregation limit has to be
 112          * adjusted half of wlan_airtime to ensure that the aggregation can fit
 113          * without collision with BT traffic.
 114          */
 115         if ((wlan_airtime <= 4) &&
 116             (!mci->aggr_limit || (mci->aggr_limit > (2 * wlan_airtime))))
 117                 mci->aggr_limit = 2 * wlan_airtime;
 118 }
 119
 120 static void ath_mci_update_scheme(struct ath_softc *sc)
 121 {
 122         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
 123         struct ath_btcoex *btcoex = &sc->btcoex;
 124         struct ath_mci_profile *mci = &btcoex->mci;
 125         struct ath_mci_profile_info *info;
 126         u32 num_profile = NUM_PROF(mci);
 127
 128         if (num_profile == 1) {
 129                 info = list_first_entry(&mci->info,
 130                                         struct ath_mci_profile_info,
 131                                         list);
 132                 if (mci->num_sco && info->T == 12) {
 133                         mci->aggr_limit = 8;
 134                         ath_dbg(common, MCI,
 135                                 "Single SCO, aggregation limit 2 ms\n");
 136                 } else if ((info->type == MCI_GPM_COEX_PROFILE_BNEP) &&
 137                            !info->master) {
 138                         btcoex->btcoex_period = 60;
 139                         ath_dbg(common, MCI,
 140                                 "Single slave PAN/FTP, bt period 60 ms\n");
 141                 } else if ((info->type == MCI_GPM_COEX_PROFILE_HID) &&
 142                          (info->T > 0 && info->T < 50) &&
 143                          (info->A > 1 || info->W > 1)) {
 144                         btcoex->duty_cycle = 30;
 145                         mci->aggr_limit = 8;
 146                         ath_dbg(common, MCI,
 147                                 "Multiple attempt/timeout single HID "
 148                                 "aggregation limit 2 ms dutycycle 30%%\n");
 149                 }
 150         } else if ((num_profile == 2) && (mci->num_hid == 2)) {
 151                 btcoex->duty_cycle = 30;
 152                 mci->aggr_limit = 8;
 153                 ath_dbg(common, MCI,
 154                         "Two HIDs aggregation limit 2 ms dutycycle 30%%\n");
 155         } else if (num_profile > 3) {
 156                 mci->aggr_limit = 6;
 157                 ath_dbg(common, MCI,
 158                         "Three or more profiles aggregation limit 1.5 ms\n");
 159         }
 160
 161         if (IS_CHAN_2GHZ(sc->sc_ah->curchan)) {
 162                 if (IS_CHAN_HT(sc->sc_ah->curchan))
 163                         ath_mci_adjust_aggr_limit(btcoex);
 164                 else
 165                         btcoex->btcoex_period >>= 1;
 166         }
 167
 168         ath9k_hw_btcoex_disable(sc->sc_ah);
 169         ath9k_btcoex_timer_pause(sc);
 170
 171         if (IS_CHAN_5GHZ(sc->sc_ah->curchan))
 172                 return;
 173
 174         btcoex->duty_cycle += (mci->num_bdr ? ATH_MCI_MAX_DUTY_CYCLE : 0);
 175         if (btcoex->duty_cycle > ATH_MCI_MAX_DUTY_CYCLE)
 176                 btcoex->duty_cycle = ATH_MCI_MAX_DUTY_CYCLE;
 177
 178         btcoex->btcoex_period *= 1000;
 179         btcoex->btcoex_no_stomp =  btcoex->btcoex_period *
 180                                         (100 - btcoex->duty_cycle) / 100;
 181
 182         ath9k_hw_btcoex_enable(sc->sc_ah);
 183         ath9k_btcoex_timer_resume(sc);
 184 }
 185
 186
 187 static void ath_mci_cal_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload)
 188 {
 189         struct ath_hw *ah = sc->sc_ah;
 190         struct ath_common *common = ath9k_hw_common(ah);
 191         u32 payload[4] = {0, 0, 0, 0};
 192
 193         switch (opcode) {
 194         case MCI_GPM_BT_CAL_REQ:
 195
 196                 ath_dbg(common, MCI, "MCI received BT_CAL_REQ\n");
 197
 198                 if (ar9003_mci_state(ah, MCI_STATE_BT, NULL) == MCI_BT_AWAKE) {
 199                         ar9003_mci_state(ah, MCI_STATE_SET_BT_CAL_START, NULL);
 200                         ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
 201                 } else
 202                         ath_dbg(common, MCI, "MCI State mismatches: %d\n",
 203                                 ar9003_mci_state(ah, MCI_STATE_BT, NULL));
 204
 205                 break;
 206
 207         case MCI_GPM_BT_CAL_DONE:
 208
 209                 ath_dbg(common, MCI, "MCI received BT_CAL_DONE\n");
 210
 211                 if (ar9003_mci_state(ah, MCI_STATE_BT, NULL) == MCI_BT_CAL)
 212                         ath_dbg(common, MCI, "MCI error illegal!\n");
 213                 else
 214                         ath_dbg(common, MCI, "MCI BT not in CAL state\n");
 215
 216                 break;
 217
 218         case MCI_GPM_BT_CAL_GRANT:
 219
 220                 ath_dbg(common, MCI, "MCI received BT_CAL_GRANT\n");
 221
 222                 /* Send WLAN_CAL_DONE for now */
 223                 ath_dbg(common, MCI, "MCI send WLAN_CAL_DONE\n");
 224                 MCI_GPM_SET_CAL_TYPE(payload, MCI_GPM_WLAN_CAL_DONE);
 225                 ar9003_mci_send_message(sc->sc_ah, MCI_GPM, 0, payload,
 226                                         16, false, true);
 227                 break;
 228
 229         default:
 230                 ath_dbg(common, MCI, "MCI Unknown GPM CAL message\n");
 231                 break;
 232         }
 233 }
 234
 235 static void ath_mci_process_profile(struct ath_softc *sc,
 236                                     struct ath_mci_profile_info *info)
 237 {
 238         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
 239         struct ath_btcoex *btcoex = &sc->btcoex;
 240         struct ath_mci_profile *mci = &btcoex->mci;
 241
 242         if (info->start) {
 243                 if (!ath_mci_add_profile(common, mci, info))
 244                         return;
 245         } else
 246                 ath_mci_del_profile(common, mci, info);
 247
 248         btcoex->btcoex_period = ATH_MCI_DEF_BT_PERIOD;
 249         mci->aggr_limit = mci->num_sco ? 6 : 0;
 250         if (NUM_PROF(mci)) {
 251                 btcoex->bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
 252                 btcoex->duty_cycle = ath_mci_duty_cycle[NUM_PROF(mci)];
 253         } else {
 254                 btcoex->bt_stomp_type = mci->num_mgmt ? ATH_BTCOEX_STOMP_ALL :
 255                                                         ATH_BTCOEX_STOMP_LOW;
 256                 btcoex->duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE;
 257         }
 258
 259         ath_mci_update_scheme(sc);
 260 }
 261
 262 static void ath_mci_process_status(struct ath_softc *sc,
 263                                    struct ath_mci_profile_status *status)
 264 {
 265         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
 266         struct ath_btcoex *btcoex = &sc->btcoex;
 267         struct ath_mci_profile *mci = &btcoex->mci;
 268         struct ath_mci_profile_info info;
 269         int i = 0, old_num_mgmt = mci->num_mgmt;
 270
 271         /* Link status type are not handled */
 272         if (status->is_link) {
 273                 ath_dbg(common, MCI, "Skip link type status update\n");
 274                 return;
 275         }
 276
 277         memset(&info, 0, sizeof(struct ath_mci_profile_info));
 278
 279         info.conn_handle = status->conn_handle;
 280         if (ath_mci_find_profile(mci, &info)) {
 281                 ath_dbg(common, MCI,
 282                         "Skip non link state update for existing profile %d\n",
 283                         status->conn_handle);
 284                 return;
 285         }
 286         if (status->conn_handle >= ATH_MCI_MAX_PROFILE) {
 287                 ath_dbg(common, MCI, "Ignore too many non-link update\n");
 288                 return;
 289         }
 290         if (status->is_critical)
 291                 __set_bit(status->conn_handle, mci->status);
 292         else
 293                 __clear_bit(status->conn_handle, mci->status);
 294
 295         mci->num_mgmt = 0;
 296         do {
 297                 if (test_bit(i, mci->status))
 298                         mci->num_mgmt++;
 299         } while (++i < ATH_MCI_MAX_PROFILE);
 300
 301         if (old_num_mgmt != mci->num_mgmt)
 302                 ath_mci_update_scheme(sc);
 303 }
 304
 305 static void ath_mci_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload)
 306 {
 307         struct ath_hw *ah = sc->sc_ah;
 308         struct ath_mci_profile_info profile_info;
 309         struct ath_mci_profile_status profile_status;
 310         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
 311         u32 version;
 312         u8 major;
 313         u8 minor;
 314         u32 seq_num;
 315
 316         switch (opcode) {
 317
 318         case MCI_GPM_COEX_VERSION_QUERY:
 319                 ath_dbg(common, MCI, "MCI Recv GPM COEX Version Query\n");
 320                 version = ar9003_mci_state(ah,
 321                                 MCI_STATE_SEND_WLAN_COEX_VERSION, NULL);
 322                 break;
 323
 324         case MCI_GPM_COEX_VERSION_RESPONSE:
 325                 ath_dbg(common, MCI, "MCI Recv GPM COEX Version Response\n");
 326                 major = *(rx_payload + MCI_GPM_COEX_B_MAJOR_VERSION);
 327                 minor = *(rx_payload + MCI_GPM_COEX_B_MINOR_VERSION);
 328                 ath_dbg(common, MCI, "MCI BT Coex version: %d.%d\n",
 329                         major, minor);
 330                 version = (major << 8) + minor;
 331                 version = ar9003_mci_state(ah,
 332                           MCI_STATE_SET_BT_COEX_VERSION, &version);
 333                 break;
 334
 335         case MCI_GPM_COEX_STATUS_QUERY:
 336                 ath_dbg(common, MCI,
 337                         "MCI Recv GPM COEX Status Query = 0x%02x\n",
 338                         *(rx_payload + MCI_GPM_COEX_B_WLAN_BITMAP));
 339                 ar9003_mci_state(ah,
 340                 MCI_STATE_SEND_WLAN_CHANNELS, NULL);
 341                 break;
 342
 343         case MCI_GPM_COEX_BT_PROFILE_INFO:
 344                 ath_dbg(common, MCI, "MCI Recv GPM Coex BT profile info\n");
 345                 memcpy(&profile_info,
 346                        (rx_payload + MCI_GPM_COEX_B_PROFILE_TYPE), 10);
 347
 348                 if ((profile_info.type == MCI_GPM_COEX_PROFILE_UNKNOWN)
 349                     || (profile_info.type >=
 350                                             MCI_GPM_COEX_PROFILE_MAX)) {
 351
 352                         ath_dbg(common, MCI,
 353                                 "illegal profile type = %d, state = %d\n",
 354                                 profile_info.type,
 355                                 profile_info.start);
 356                         break;
 357                 }
 358
 359                 ath_mci_process_profile(sc, &profile_info);
 360                 break;
 361
 362         case MCI_GPM_COEX_BT_STATUS_UPDATE:
 363                 profile_status.is_link = *(rx_payload +
 364                                            MCI_GPM_COEX_B_STATUS_TYPE);
 365                 profile_status.conn_handle = *(rx_payload +
 366                                                MCI_GPM_COEX_B_STATUS_LINKID);
 367                 profile_status.is_critical = *(rx_payload +
 368                                                MCI_GPM_COEX_B_STATUS_STATE);
 369
 370                 seq_num = *((u32 *)(rx_payload + 12));
 371                 ath_dbg(common, MCI,
 372                         "MCI Recv GPM COEX BT_Status_Update: is_link=%d, linkId=%d, state=%d, SEQ=%d\n",
 373                         profile_status.is_link, profile_status.conn_handle,
 374                         profile_status.is_critical, seq_num);
 375
 376                 ath_mci_process_status(sc, &profile_status);
 377                 break;
 378
 379         default:
 380                 ath_dbg(common, MCI, "MCI Unknown GPM COEX message = 0x%02x\n",
 381                         opcode);
 382                 break;
 383         }
 384 }
 385
 386 static int ath_mci_buf_alloc(struct ath_softc *sc, struct ath_mci_buf *buf)
 387 {
 388         int error = 0;
 389
 390         buf->bf_addr = dma_alloc_coherent(sc->dev, buf->bf_len,
 391                                           &buf->bf_paddr, GFP_KERNEL);
 392
 393         if (buf->bf_addr == NULL) {
 394                 error = -ENOMEM;
 395                 goto fail;
 396         }
 397
 398         return 0;
 399
 400 fail:
 401         memset(buf, 0, sizeof(*buf));
 402         return error;
 403 }
 404
 405 static void ath_mci_buf_free(struct ath_softc *sc, struct ath_mci_buf *buf)
 406 {
 407         if (buf->bf_addr) {
 408                 dma_free_coherent(sc->dev, buf->bf_len, buf->bf_addr,
 409                                                         buf->bf_paddr);
 410                 memset(buf, 0, sizeof(*buf));
 411         }
 412 }
 413
 414 int ath_mci_setup(struct ath_softc *sc)
 415 {
 416         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
 417         struct ath_mci_coex *mci = &sc->mci_coex;
 418         int error = 0;
 419
 420         if (!ATH9K_HW_CAP_MCI)
 421                 return 0;
 422
 423         mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE;
 424
 425         if (ath_mci_buf_alloc(sc, &mci->sched_buf)) {
 426                 ath_dbg(common, FATAL, "MCI buffer alloc failed\n");
 427                 error = -ENOMEM;
 428                 goto fail;
 429         }
 430
 431         mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE;
 432
 433         memset(mci->sched_buf.bf_addr, MCI_GPM_RSVD_PATTERN,
 434                                                 mci->sched_buf.bf_len);
 435
 436         mci->gpm_buf.bf_len = ATH_MCI_GPM_BUF_SIZE;
 437         mci->gpm_buf.bf_addr = (u8 *)mci->sched_buf.bf_addr +
 438                                                         mci->sched_buf.bf_len;
 439         mci->gpm_buf.bf_paddr = mci->sched_buf.bf_paddr + mci->sched_buf.bf_len;
 440
 441         /* initialize the buffer */
 442         memset(mci->gpm_buf.bf_addr, MCI_GPM_RSVD_PATTERN, mci->gpm_buf.bf_len);
 443
 444         ar9003_mci_setup(sc->sc_ah, mci->gpm_buf.bf_paddr,
 445                          mci->gpm_buf.bf_addr, (mci->gpm_buf.bf_len >> 4),
 446                          mci->sched_buf.bf_paddr);
 447 fail:
 448         return error;
 449 }
 450
 451 void ath_mci_cleanup(struct ath_softc *sc)
 452 {
 453         struct ath_hw *ah = sc->sc_ah;
 454         struct ath_mci_coex *mci = &sc->mci_coex;
 455
 456         if (!ATH9K_HW_CAP_MCI)
 457                 return;
 458
 459         /*
 460          * both schedule and gpm buffers will be released
 461          */
 462         ath_mci_buf_free(sc, &mci->sched_buf);
 463         ar9003_mci_cleanup(ah);
 464 }
 465
 466 void ath_mci_intr(struct ath_softc *sc)
 467 {
 468         struct ath_mci_coex *mci = &sc->mci_coex;
 469         struct ath_hw *ah = sc->sc_ah;
 470         struct ath_common *common = ath9k_hw_common(ah);
 471         u32 mci_int, mci_int_rxmsg;
 472         u32 offset, subtype, opcode;
 473         u32 *pgpm;
 474         u32 more_data = MCI_GPM_MORE;
 475         bool skip_gpm = false;
 476
 477         if (!ATH9K_HW_CAP_MCI)
 478                 return;
 479
 480         ar9003_mci_get_interrupt(sc->sc_ah, &mci_int, &mci_int_rxmsg);
 481
 482         if (ar9003_mci_state(ah, MCI_STATE_ENABLE, NULL) == 0) {
 483
 484                 ar9003_mci_state(sc->sc_ah, MCI_STATE_INIT_GPM_OFFSET, NULL);
 485                 ath_dbg(common, MCI, "MCI interrupt but MCI disabled\n");
 486
 487                 ath_dbg(common, MCI,
 488                         "MCI interrupt: intr = 0x%x, intr_rxmsg = 0x%x\n",
 489                         mci_int, mci_int_rxmsg);
 490                 return;
 491         }
 492
 493         if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE) {
 494                 u32 payload[4] = { 0xffffffff, 0xffffffff,
 495                                    0xffffffff, 0xffffff00};
 496
 497                 /*
 498                  * The following REMOTE_RESET and SYS_WAKING used to sent
 499                  * only when BT wake up. Now they are always sent, as a
 500                  * recovery method to reset BT MCI's RX alignment.
 501                  */
 502                 ath_dbg(common, MCI, "MCI interrupt send REMOTE_RESET\n");
 503
 504                 ar9003_mci_send_message(ah, MCI_REMOTE_RESET, 0,
 505                                         payload, 16, true, false);
 506                 ath_dbg(common, MCI, "MCI interrupt send SYS_WAKING\n");
 507                 ar9003_mci_send_message(ah, MCI_SYS_WAKING, 0,
 508                                         NULL, 0, true, false);
 509
 510                 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE;
 511                 ar9003_mci_state(ah, MCI_STATE_RESET_REQ_WAKE, NULL);
 512
 513                 /*
 514                  * always do this for recovery and 2G/5G toggling and LNA_TRANS
 515                  */
 516                 ath_dbg(common, MCI, "MCI Set BT state to AWAKE\n");
 517                 ar9003_mci_state(ah, MCI_STATE_SET_BT_AWAKE, NULL);
 518         }
 519
 520         /* Processing SYS_WAKING/SYS_SLEEPING */
 521         if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING) {
 522                 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING;
 523
 524                 if (ar9003_mci_state(ah, MCI_STATE_BT, NULL) == MCI_BT_SLEEP) {
 525
 526                         if (ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP, NULL)
 527                                         == MCI_BT_SLEEP)
 528                                 ath_dbg(common, MCI,
 529                                         "MCI BT stays in sleep mode\n");
 530                         else {
 531                                 ath_dbg(common, MCI,
 532                                         "MCI Set BT state to AWAKE\n");
 533                                 ar9003_mci_state(ah,
 534                                                  MCI_STATE_SET_BT_AWAKE, NULL);
 535                         }
 536                 } else
 537                         ath_dbg(common, MCI, "MCI BT stays in AWAKE mode\n");
 538         }
 539
 540         if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING) {
 541
 542                 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING;
 543
 544                 if (ar9003_mci_state(ah, MCI_STATE_BT, NULL) == MCI_BT_AWAKE) {
 545
 546                         if (ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP, NULL)
 547                                         == MCI_BT_AWAKE)
 548                                 ath_dbg(common, MCI,
 549                                         "MCI BT stays in AWAKE mode\n");
 550                         else {
 551                                 ath_dbg(common, MCI,
 552                                         "MCI SetBT state to SLEEP\n");
 553                                 ar9003_mci_state(ah, MCI_STATE_SET_BT_SLEEP,
 554                                                  NULL);
 555                         }
 556                 } else
 557                         ath_dbg(common, MCI, "MCI BT stays in SLEEP mode\n");
 558         }
 559
 560         if ((mci_int & AR_MCI_INTERRUPT_RX_INVALID_HDR) ||
 561             (mci_int & AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT)) {
 562
 563                 ath_dbg(common, MCI, "MCI RX broken, skip GPM msgs\n");
 564                 ar9003_mci_state(ah, MCI_STATE_RECOVER_RX, NULL);
 565                 skip_gpm = true;
 566         }
 567
 568         if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SCHD_INFO) {
 569
 570                 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SCHD_INFO;
 571                 offset = ar9003_mci_state(ah, MCI_STATE_LAST_SCHD_MSG_OFFSET,
 572                                           NULL);
 573         }
 574
 575         if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_GPM) {
 576
 577                 mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_GPM;
 578
 579                 while (more_data == MCI_GPM_MORE) {
 580
 581                         pgpm = mci->gpm_buf.bf_addr;
 582                         offset = ar9003_mci_state(ah,
 583                                         MCI_STATE_NEXT_GPM_OFFSET, &more_data);
 584
 585                         if (offset == MCI_GPM_INVALID)
 586                                 break;
 587
 588                         pgpm += (offset >> 2);
 589
 590                         /*
 591                          * The first dword is timer.
 592                          * The real data starts from 2nd dword.
 593                          */
 594
 595                         subtype = MCI_GPM_TYPE(pgpm);
 596                         opcode = MCI_GPM_OPCODE(pgpm);
 597
 598                         if (!skip_gpm) {
 599
 600                                 if (MCI_GPM_IS_CAL_TYPE(subtype))
 601                                         ath_mci_cal_msg(sc, subtype,
 602                                                         (u8 *) pgpm);
 603                                 else {
 604                                         switch (subtype) {
 605                                         case MCI_GPM_COEX_AGENT:
 606                                                 ath_mci_msg(sc, opcode,
 607                                                             (u8 *) pgpm);
 608                                                 break;
 609                                         default:
 610                                                 break;
 611                                         }
 612                                 }
 613                         }
 614                         MCI_GPM_RECYCLE(pgpm);
 615                 }
 616         }
 617
 618         if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_HW_MSG_MASK) {
 619
 620                 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_LNA_CONTROL)
 621                         mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_LNA_CONTROL;
 622
 623                 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_LNA_INFO) {
 624                         mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_LNA_INFO;
 625                         ath_dbg(common, MCI, "MCI LNA_INFO\n");
 626                 }
 627
 628                 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_INFO) {
 629
 630                         int value_dbm = ar9003_mci_state(ah,
 631                                         MCI_STATE_CONT_RSSI_POWER, NULL);
 632
 633                         mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_INFO;
 634
 635                         if (ar9003_mci_state(ah, MCI_STATE_CONT_TXRX, NULL))
 636                                 ath_dbg(common, MCI,
 637                                         "MCI CONT_INFO: (tx) pri = %d, pwr = %d dBm\n",
 638                                         ar9003_mci_state(ah,
 639                                                 MCI_STATE_CONT_PRIORITY, NULL),
 640                                         value_dbm);
 641                         else
 642                                 ath_dbg(common, MCI,
 643                                         "MCI CONT_INFO: (rx) pri = %d,pwr = %d dBm\n",
 644                                         ar9003_mci_state(ah,
 645                                                 MCI_STATE_CONT_PRIORITY, NULL),
 646                                         value_dbm);
 647                 }
 648
 649                 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_NACK) {
 650                         mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_NACK;
 651                         ath_dbg(common, MCI, "MCI CONT_NACK\n");
 652                 }
 653
 654                 if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_RST) {
 655                         mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_RST;
 656                         ath_dbg(common, MCI, "MCI CONT_RST\n");
 657                 }
 658         }
 659
 660         if ((mci_int & AR_MCI_INTERRUPT_RX_INVALID_HDR) ||
 661             (mci_int & AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT))
 662                 mci_int &= ~(AR_MCI_INTERRUPT_RX_INVALID_HDR |
 663                              AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT);
 664
 665         if (mci_int_rxmsg & 0xfffffffe)
 666                 ath_dbg(common, MCI, "MCI not processed mci_int_rxmsg = 0x%x\n",
 667                         mci_int_rxmsg);
 668 }