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767 lines
21 KiB
767 lines
21 KiB
/* |
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* Copyright (c) 2010-2011 Atheros Communications Inc. |
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* |
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* Permission to use, copy, modify, and/or distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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|
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#include <linux/dma-mapping.h> |
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#include <linux/slab.h> |
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|
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#include "ath9k.h" |
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#include "mci.h" |
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static const u8 ath_mci_duty_cycle[] = { 55, 50, 60, 70, 80, 85, 90, 95, 98 }; |
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static struct ath_mci_profile_info* |
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ath_mci_find_profile(struct ath_mci_profile *mci, |
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struct ath_mci_profile_info *info) |
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{ |
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struct ath_mci_profile_info *entry; |
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|
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if (list_empty(&mci->info)) |
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return NULL; |
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list_for_each_entry(entry, &mci->info, list) { |
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if (entry->conn_handle == info->conn_handle) |
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return entry; |
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} |
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return NULL; |
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} |
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static bool ath_mci_add_profile(struct ath_common *common, |
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struct ath_mci_profile *mci, |
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struct ath_mci_profile_info *info) |
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{ |
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struct ath_mci_profile_info *entry; |
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u8 voice_priority[] = { 110, 110, 110, 112, 110, 110, 114, 116, 118 }; |
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if ((mci->num_sco == ATH_MCI_MAX_SCO_PROFILE) && |
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(info->type == MCI_GPM_COEX_PROFILE_VOICE)) |
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return false; |
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if (((NUM_PROF(mci) - mci->num_sco) == ATH_MCI_MAX_ACL_PROFILE) && |
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(info->type != MCI_GPM_COEX_PROFILE_VOICE)) |
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return false; |
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entry = kzalloc(sizeof(*entry), GFP_ATOMIC); |
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if (!entry) |
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return false; |
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memcpy(entry, info, 10); |
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INC_PROF(mci, info); |
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list_add_tail(&entry->list, &mci->info); |
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if (info->type == MCI_GPM_COEX_PROFILE_VOICE) { |
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if (info->voice_type < sizeof(voice_priority)) |
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mci->voice_priority = voice_priority[info->voice_type]; |
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else |
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mci->voice_priority = 110; |
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} |
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return true; |
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} |
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static void ath_mci_del_profile(struct ath_common *common, |
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struct ath_mci_profile *mci, |
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struct ath_mci_profile_info *entry) |
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{ |
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if (!entry) |
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return; |
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DEC_PROF(mci, entry); |
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list_del(&entry->list); |
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kfree(entry); |
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} |
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void ath_mci_flush_profile(struct ath_mci_profile *mci) |
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{ |
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struct ath_mci_profile_info *info, *tinfo; |
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mci->aggr_limit = 0; |
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mci->num_mgmt = 0; |
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if (list_empty(&mci->info)) |
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return; |
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list_for_each_entry_safe(info, tinfo, &mci->info, list) { |
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list_del(&info->list); |
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DEC_PROF(mci, info); |
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kfree(info); |
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} |
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} |
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static void ath_mci_adjust_aggr_limit(struct ath_btcoex *btcoex) |
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{ |
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struct ath_mci_profile *mci = &btcoex->mci; |
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u32 wlan_airtime = btcoex->btcoex_period * |
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(100 - btcoex->duty_cycle) / 100; |
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/* |
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* Scale: wlan_airtime is in ms, aggr_limit is in 0.25 ms. |
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* When wlan_airtime is less than 4ms, aggregation limit has to be |
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* adjusted half of wlan_airtime to ensure that the aggregation can fit |
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* without collision with BT traffic. |
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*/ |
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if ((wlan_airtime <= 4) && |
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(!mci->aggr_limit || (mci->aggr_limit > (2 * wlan_airtime)))) |
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mci->aggr_limit = 2 * wlan_airtime; |
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} |
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static void ath_mci_update_scheme(struct ath_softc *sc) |
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{ |
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struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
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struct ath_btcoex *btcoex = &sc->btcoex; |
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struct ath_mci_profile *mci = &btcoex->mci; |
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struct ath9k_hw_mci *mci_hw = &sc->sc_ah->btcoex_hw.mci; |
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struct ath_mci_profile_info *info; |
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u32 num_profile = NUM_PROF(mci); |
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if (mci_hw->config & ATH_MCI_CONFIG_DISABLE_TUNING) |
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goto skip_tuning; |
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mci->aggr_limit = 0; |
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btcoex->duty_cycle = ath_mci_duty_cycle[num_profile]; |
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btcoex->btcoex_period = ATH_MCI_DEF_BT_PERIOD; |
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if (NUM_PROF(mci)) |
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btcoex->bt_stomp_type = ATH_BTCOEX_STOMP_LOW; |
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else |
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btcoex->bt_stomp_type = mci->num_mgmt ? ATH_BTCOEX_STOMP_ALL : |
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ATH_BTCOEX_STOMP_LOW; |
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if (num_profile == 1) { |
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info = list_first_entry(&mci->info, |
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struct ath_mci_profile_info, |
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list); |
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if (mci->num_sco) { |
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if (info->T == 12) |
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mci->aggr_limit = 8; |
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else if (info->T == 6) { |
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mci->aggr_limit = 6; |
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btcoex->duty_cycle = 30; |
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} else |
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mci->aggr_limit = 6; |
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ath_dbg(common, MCI, |
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"Single SCO, aggregation limit %d 1/4 ms\n", |
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mci->aggr_limit); |
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} else if (mci->num_pan || mci->num_other_acl) { |
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/* |
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* For single PAN/FTP profile, allocate 35% for BT |
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* to improve WLAN throughput. |
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*/ |
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btcoex->duty_cycle = AR_SREV_9565(sc->sc_ah) ? 40 : 35; |
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btcoex->btcoex_period = 53; |
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ath_dbg(common, MCI, |
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"Single PAN/FTP bt period %d ms dutycycle %d\n", |
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btcoex->duty_cycle, btcoex->btcoex_period); |
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} else if (mci->num_hid) { |
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btcoex->duty_cycle = 30; |
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mci->aggr_limit = 6; |
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ath_dbg(common, MCI, |
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"Multiple attempt/timeout single HID " |
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"aggregation limit 1.5 ms dutycycle 30%%\n"); |
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} |
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} else if (num_profile == 2) { |
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if (mci->num_hid == 2) |
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btcoex->duty_cycle = 30; |
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mci->aggr_limit = 6; |
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ath_dbg(common, MCI, |
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"Two BT profiles aggr limit 1.5 ms dutycycle %d%%\n", |
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btcoex->duty_cycle); |
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} else if (num_profile >= 3) { |
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mci->aggr_limit = 4; |
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ath_dbg(common, MCI, |
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"Three or more profiles aggregation limit 1 ms\n"); |
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} |
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skip_tuning: |
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if (IS_CHAN_2GHZ(sc->sc_ah->curchan)) { |
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if (IS_CHAN_HT(sc->sc_ah->curchan)) |
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ath_mci_adjust_aggr_limit(btcoex); |
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else |
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btcoex->btcoex_period >>= 1; |
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} |
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ath9k_btcoex_timer_pause(sc); |
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ath9k_hw_btcoex_disable(sc->sc_ah); |
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if (IS_CHAN_5GHZ(sc->sc_ah->curchan)) |
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return; |
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btcoex->duty_cycle += (mci->num_bdr ? ATH_MCI_BDR_DUTY_CYCLE : 0); |
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if (btcoex->duty_cycle > ATH_MCI_MAX_DUTY_CYCLE) |
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btcoex->duty_cycle = ATH_MCI_MAX_DUTY_CYCLE; |
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btcoex->btcoex_no_stomp = btcoex->btcoex_period * |
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(100 - btcoex->duty_cycle) / 100; |
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ath9k_hw_btcoex_enable(sc->sc_ah); |
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ath9k_btcoex_timer_resume(sc); |
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} |
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static void ath_mci_cal_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload) |
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{ |
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struct ath_hw *ah = sc->sc_ah; |
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struct ath_common *common = ath9k_hw_common(ah); |
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struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci; |
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u32 payload[4] = {0, 0, 0, 0}; |
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switch (opcode) { |
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case MCI_GPM_BT_CAL_REQ: |
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if (mci_hw->bt_state == MCI_BT_AWAKE) { |
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mci_hw->bt_state = MCI_BT_CAL_START; |
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ath9k_queue_reset(sc, RESET_TYPE_MCI); |
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} |
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ath_dbg(common, MCI, "MCI State : %d\n", mci_hw->bt_state); |
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break; |
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case MCI_GPM_BT_CAL_GRANT: |
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MCI_GPM_SET_CAL_TYPE(payload, MCI_GPM_WLAN_CAL_DONE); |
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ar9003_mci_send_message(sc->sc_ah, MCI_GPM, 0, payload, |
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16, false, true); |
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break; |
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default: |
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ath_dbg(common, MCI, "Unknown GPM CAL message\n"); |
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break; |
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} |
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} |
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static void ath9k_mci_work(struct work_struct *work) |
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{ |
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struct ath_softc *sc = container_of(work, struct ath_softc, mci_work); |
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ath_mci_update_scheme(sc); |
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} |
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static void ath_mci_update_stomp_txprio(u8 cur_txprio, u8 *stomp_prio) |
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{ |
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if (cur_txprio < stomp_prio[ATH_BTCOEX_STOMP_NONE]) |
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stomp_prio[ATH_BTCOEX_STOMP_NONE] = cur_txprio; |
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if (cur_txprio > stomp_prio[ATH_BTCOEX_STOMP_ALL]) |
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stomp_prio[ATH_BTCOEX_STOMP_ALL] = cur_txprio; |
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if ((cur_txprio > ATH_MCI_HI_PRIO) && |
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(cur_txprio < stomp_prio[ATH_BTCOEX_STOMP_LOW])) |
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stomp_prio[ATH_BTCOEX_STOMP_LOW] = cur_txprio; |
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} |
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static void ath_mci_set_concur_txprio(struct ath_softc *sc) |
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{ |
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struct ath_btcoex *btcoex = &sc->btcoex; |
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struct ath_mci_profile *mci = &btcoex->mci; |
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u8 stomp_txprio[ATH_BTCOEX_STOMP_MAX]; |
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memset(stomp_txprio, 0, sizeof(stomp_txprio)); |
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if (mci->num_mgmt) { |
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stomp_txprio[ATH_BTCOEX_STOMP_ALL] = ATH_MCI_INQUIRY_PRIO; |
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if (!mci->num_pan && !mci->num_other_acl) |
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stomp_txprio[ATH_BTCOEX_STOMP_NONE] = |
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ATH_MCI_INQUIRY_PRIO; |
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} else { |
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u8 prof_prio[] = { 50, 90, 94, 52 };/* RFCOMM, A2DP, HID, PAN */ |
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stomp_txprio[ATH_BTCOEX_STOMP_LOW] = |
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stomp_txprio[ATH_BTCOEX_STOMP_NONE] = 0xff; |
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if (mci->num_sco) |
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ath_mci_update_stomp_txprio(mci->voice_priority, |
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stomp_txprio); |
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if (mci->num_other_acl) |
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ath_mci_update_stomp_txprio(prof_prio[0], stomp_txprio); |
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if (mci->num_a2dp) |
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ath_mci_update_stomp_txprio(prof_prio[1], stomp_txprio); |
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if (mci->num_hid) |
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ath_mci_update_stomp_txprio(prof_prio[2], stomp_txprio); |
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if (mci->num_pan) |
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ath_mci_update_stomp_txprio(prof_prio[3], stomp_txprio); |
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if (stomp_txprio[ATH_BTCOEX_STOMP_NONE] == 0xff) |
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stomp_txprio[ATH_BTCOEX_STOMP_NONE] = 0; |
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if (stomp_txprio[ATH_BTCOEX_STOMP_LOW] == 0xff) |
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stomp_txprio[ATH_BTCOEX_STOMP_LOW] = 0; |
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} |
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ath9k_hw_btcoex_set_concur_txprio(sc->sc_ah, stomp_txprio); |
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} |
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static u8 ath_mci_process_profile(struct ath_softc *sc, |
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struct ath_mci_profile_info *info) |
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{ |
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struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
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struct ath_btcoex *btcoex = &sc->btcoex; |
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struct ath_mci_profile *mci = &btcoex->mci; |
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struct ath_mci_profile_info *entry = NULL; |
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entry = ath_mci_find_profile(mci, info); |
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if (entry) { |
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/* |
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* Two MCI interrupts are generated while connecting to |
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* headset and A2DP profile, but only one MCI interrupt |
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* is generated with last added profile type while disconnecting |
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* both profiles. |
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* So while adding second profile type decrement |
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* the first one. |
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*/ |
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if (entry->type != info->type) { |
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DEC_PROF(mci, entry); |
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INC_PROF(mci, info); |
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} |
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memcpy(entry, info, 10); |
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} |
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if (info->start) { |
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if (!entry && !ath_mci_add_profile(common, mci, info)) |
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return 0; |
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} else |
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ath_mci_del_profile(common, mci, entry); |
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ath_mci_set_concur_txprio(sc); |
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return 1; |
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} |
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static u8 ath_mci_process_status(struct ath_softc *sc, |
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struct ath_mci_profile_status *status) |
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{ |
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struct ath_btcoex *btcoex = &sc->btcoex; |
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struct ath_mci_profile *mci = &btcoex->mci; |
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struct ath_mci_profile_info info; |
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int i = 0, old_num_mgmt = mci->num_mgmt; |
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/* Link status type are not handled */ |
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if (status->is_link) |
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return 0; |
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info.conn_handle = status->conn_handle; |
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if (ath_mci_find_profile(mci, &info)) |
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return 0; |
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if (status->conn_handle >= ATH_MCI_MAX_PROFILE) |
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return 0; |
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if (status->is_critical) |
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__set_bit(status->conn_handle, mci->status); |
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else |
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__clear_bit(status->conn_handle, mci->status); |
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mci->num_mgmt = 0; |
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do { |
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if (test_bit(i, mci->status)) |
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mci->num_mgmt++; |
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} while (++i < ATH_MCI_MAX_PROFILE); |
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ath_mci_set_concur_txprio(sc); |
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if (old_num_mgmt != mci->num_mgmt) |
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return 1; |
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return 0; |
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} |
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static void ath_mci_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload) |
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{ |
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struct ath_hw *ah = sc->sc_ah; |
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struct ath_mci_profile_info profile_info; |
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struct ath_mci_profile_status profile_status; |
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struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
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u8 major, minor, update_scheme = 0; |
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u32 seq_num; |
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if (ar9003_mci_state(ah, MCI_STATE_NEED_FLUSH_BT_INFO) && |
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ar9003_mci_state(ah, MCI_STATE_ENABLE)) { |
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ath_dbg(common, MCI, "(MCI) Need to flush BT profiles\n"); |
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ath_mci_flush_profile(&sc->btcoex.mci); |
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ar9003_mci_state(ah, MCI_STATE_SEND_STATUS_QUERY); |
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} |
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switch (opcode) { |
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case MCI_GPM_COEX_VERSION_QUERY: |
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ar9003_mci_state(ah, MCI_STATE_SEND_WLAN_COEX_VERSION); |
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break; |
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case MCI_GPM_COEX_VERSION_RESPONSE: |
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major = *(rx_payload + MCI_GPM_COEX_B_MAJOR_VERSION); |
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minor = *(rx_payload + MCI_GPM_COEX_B_MINOR_VERSION); |
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ar9003_mci_set_bt_version(ah, major, minor); |
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break; |
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case MCI_GPM_COEX_STATUS_QUERY: |
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ar9003_mci_send_wlan_channels(ah); |
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break; |
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case MCI_GPM_COEX_BT_PROFILE_INFO: |
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memcpy(&profile_info, |
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(rx_payload + MCI_GPM_COEX_B_PROFILE_TYPE), 10); |
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|
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if ((profile_info.type == MCI_GPM_COEX_PROFILE_UNKNOWN) || |
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(profile_info.type >= MCI_GPM_COEX_PROFILE_MAX)) { |
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ath_dbg(common, MCI, |
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"Illegal profile type = %d, state = %d\n", |
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profile_info.type, |
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profile_info.start); |
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break; |
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} |
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update_scheme += ath_mci_process_profile(sc, &profile_info); |
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break; |
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case MCI_GPM_COEX_BT_STATUS_UPDATE: |
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profile_status.is_link = *(rx_payload + |
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MCI_GPM_COEX_B_STATUS_TYPE); |
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profile_status.conn_handle = *(rx_payload + |
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MCI_GPM_COEX_B_STATUS_LINKID); |
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profile_status.is_critical = *(rx_payload + |
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MCI_GPM_COEX_B_STATUS_STATE); |
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|
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seq_num = *((u32 *)(rx_payload + 12)); |
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ath_dbg(common, MCI, |
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"BT_Status_Update: is_link=%d, linkId=%d, state=%d, SEQ=%u\n", |
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profile_status.is_link, profile_status.conn_handle, |
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profile_status.is_critical, seq_num); |
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|
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update_scheme += ath_mci_process_status(sc, &profile_status); |
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break; |
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default: |
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ath_dbg(common, MCI, "Unknown GPM COEX message = 0x%02x\n", opcode); |
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break; |
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} |
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if (update_scheme) |
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ieee80211_queue_work(sc->hw, &sc->mci_work); |
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} |
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|
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int ath_mci_setup(struct ath_softc *sc) |
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{ |
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struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
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struct ath_mci_coex *mci = &sc->mci_coex; |
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struct ath_mci_buf *buf = &mci->sched_buf; |
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int ret; |
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|
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buf->bf_addr = dmam_alloc_coherent(sc->dev, |
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ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE, |
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&buf->bf_paddr, GFP_KERNEL); |
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|
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if (buf->bf_addr == NULL) { |
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ath_dbg(common, FATAL, "MCI buffer alloc failed\n"); |
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return -ENOMEM; |
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} |
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|
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memset(buf->bf_addr, MCI_GPM_RSVD_PATTERN, |
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ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE); |
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|
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mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE; |
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mci->gpm_buf.bf_len = ATH_MCI_GPM_BUF_SIZE; |
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mci->gpm_buf.bf_addr = mci->sched_buf.bf_addr + mci->sched_buf.bf_len; |
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mci->gpm_buf.bf_paddr = mci->sched_buf.bf_paddr + mci->sched_buf.bf_len; |
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|
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ret = ar9003_mci_setup(sc->sc_ah, mci->gpm_buf.bf_paddr, |
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mci->gpm_buf.bf_addr, (mci->gpm_buf.bf_len >> 4), |
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mci->sched_buf.bf_paddr); |
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if (ret) { |
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ath_err(common, "Failed to initialize MCI\n"); |
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return ret; |
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} |
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|
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INIT_WORK(&sc->mci_work, ath9k_mci_work); |
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ath_dbg(common, MCI, "MCI Initialized\n"); |
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|
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return 0; |
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} |
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|
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void ath_mci_cleanup(struct ath_softc *sc) |
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{ |
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struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
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struct ath_hw *ah = sc->sc_ah; |
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|
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ar9003_mci_cleanup(ah); |
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|
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ath_dbg(common, MCI, "MCI De-Initialized\n"); |
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} |
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|
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void ath_mci_intr(struct ath_softc *sc) |
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{ |
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struct ath_mci_coex *mci = &sc->mci_coex; |
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struct ath_hw *ah = sc->sc_ah; |
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struct ath_common *common = ath9k_hw_common(ah); |
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struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci; |
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u32 mci_int, mci_int_rxmsg; |
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u32 offset, subtype, opcode; |
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u32 *pgpm; |
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u32 more_data = MCI_GPM_MORE; |
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bool skip_gpm = false; |
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|
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ar9003_mci_get_interrupt(sc->sc_ah, &mci_int, &mci_int_rxmsg); |
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|
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if (ar9003_mci_state(ah, MCI_STATE_ENABLE) == 0) { |
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ar9003_mci_state(ah, MCI_STATE_INIT_GPM_OFFSET); |
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return; |
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} |
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|
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if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE) { |
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u32 payload[4] = { 0xffffffff, 0xffffffff, |
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0xffffffff, 0xffffff00}; |
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|
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/* |
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* The following REMOTE_RESET and SYS_WAKING used to sent |
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* only when BT wake up. Now they are always sent, as a |
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* recovery method to reset BT MCI's RX alignment. |
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*/ |
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ar9003_mci_send_message(ah, MCI_REMOTE_RESET, 0, |
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payload, 16, true, false); |
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ar9003_mci_send_message(ah, MCI_SYS_WAKING, 0, |
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NULL, 0, true, false); |
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|
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mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE; |
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ar9003_mci_state(ah, MCI_STATE_RESET_REQ_WAKE); |
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|
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/* |
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* always do this for recovery and 2G/5G toggling and LNA_TRANS |
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*/ |
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ar9003_mci_state(ah, MCI_STATE_SET_BT_AWAKE); |
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} |
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|
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if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING) { |
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mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING; |
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|
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if ((mci_hw->bt_state == MCI_BT_SLEEP) && |
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(ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP) != |
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MCI_BT_SLEEP)) |
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ar9003_mci_state(ah, MCI_STATE_SET_BT_AWAKE); |
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} |
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|
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if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING) { |
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mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING; |
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|
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if ((mci_hw->bt_state == MCI_BT_AWAKE) && |
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(ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP) != |
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MCI_BT_AWAKE)) |
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mci_hw->bt_state = MCI_BT_SLEEP; |
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} |
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|
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if ((mci_int & AR_MCI_INTERRUPT_RX_INVALID_HDR) || |
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(mci_int & AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT)) { |
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ar9003_mci_state(ah, MCI_STATE_RECOVER_RX); |
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skip_gpm = true; |
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} |
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|
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if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SCHD_INFO) { |
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mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SCHD_INFO; |
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ar9003_mci_state(ah, MCI_STATE_LAST_SCHD_MSG_OFFSET); |
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} |
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|
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if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_GPM) { |
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mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_GPM; |
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|
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while (more_data == MCI_GPM_MORE) { |
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if (test_bit(ATH_OP_HW_RESET, &common->op_flags)) |
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return; |
|
|
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pgpm = mci->gpm_buf.bf_addr; |
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offset = ar9003_mci_get_next_gpm_offset(ah, &more_data); |
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|
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if (offset == MCI_GPM_INVALID) |
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break; |
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|
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pgpm += (offset >> 2); |
|
|
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/* |
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* The first dword is timer. |
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* The real data starts from 2nd dword. |
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*/ |
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subtype = MCI_GPM_TYPE(pgpm); |
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opcode = MCI_GPM_OPCODE(pgpm); |
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|
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if (skip_gpm) |
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goto recycle; |
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|
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if (MCI_GPM_IS_CAL_TYPE(subtype)) { |
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ath_mci_cal_msg(sc, subtype, (u8 *)pgpm); |
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} else { |
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switch (subtype) { |
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case MCI_GPM_COEX_AGENT: |
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ath_mci_msg(sc, opcode, (u8 *)pgpm); |
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break; |
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default: |
|
break; |
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} |
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} |
|
recycle: |
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MCI_GPM_RECYCLE(pgpm); |
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} |
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} |
|
|
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if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_HW_MSG_MASK) { |
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if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_LNA_CONTROL) |
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mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_LNA_CONTROL; |
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|
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if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_LNA_INFO) |
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mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_LNA_INFO; |
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|
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if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_INFO) { |
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int value_dbm = MS(mci_hw->cont_status, |
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AR_MCI_CONT_RSSI_POWER); |
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|
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mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_INFO; |
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|
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ath_dbg(common, MCI, |
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"MCI CONT_INFO: (%s) pri = %d pwr = %d dBm\n", |
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MS(mci_hw->cont_status, AR_MCI_CONT_TXRX) ? |
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"tx" : "rx", |
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MS(mci_hw->cont_status, AR_MCI_CONT_PRIORITY), |
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value_dbm); |
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} |
|
|
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if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_NACK) |
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mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_NACK; |
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|
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if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_RST) |
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mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_RST; |
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} |
|
|
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if ((mci_int & AR_MCI_INTERRUPT_RX_INVALID_HDR) || |
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(mci_int & AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT)) { |
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mci_int &= ~(AR_MCI_INTERRUPT_RX_INVALID_HDR | |
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AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT); |
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ath_mci_msg(sc, MCI_GPM_COEX_NOOP, NULL); |
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} |
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} |
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|
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void ath_mci_enable(struct ath_softc *sc) |
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{ |
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struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
|
|
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if (!common->btcoex_enabled) |
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return; |
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|
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if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) |
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sc->sc_ah->imask |= ATH9K_INT_MCI; |
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} |
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|
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void ath9k_mci_update_wlan_channels(struct ath_softc *sc, bool allow_all) |
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{ |
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struct ath_hw *ah = sc->sc_ah; |
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struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci; |
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struct ath9k_channel *chan = ah->curchan; |
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u32 channelmap[] = {0x00000000, 0xffff0000, 0xffffffff, 0x7fffffff}; |
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int i; |
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s16 chan_start, chan_end; |
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u16 wlan_chan; |
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|
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if (!chan || !IS_CHAN_2GHZ(chan)) |
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return; |
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|
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if (allow_all) |
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goto send_wlan_chan; |
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|
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wlan_chan = chan->channel - 2402; |
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|
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chan_start = wlan_chan - 10; |
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chan_end = wlan_chan + 10; |
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|
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if (IS_CHAN_HT40PLUS(chan)) |
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chan_end += 20; |
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else if (IS_CHAN_HT40MINUS(chan)) |
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chan_start -= 20; |
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|
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/* adjust side band */ |
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chan_start -= 7; |
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chan_end += 7; |
|
|
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if (chan_start <= 0) |
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chan_start = 0; |
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if (chan_end >= ATH_MCI_NUM_BT_CHANNELS) |
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chan_end = ATH_MCI_NUM_BT_CHANNELS - 1; |
|
|
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ath_dbg(ath9k_hw_common(ah), MCI, |
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"WLAN current channel %d mask BT channel %d - %d\n", |
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wlan_chan, chan_start, chan_end); |
|
|
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for (i = chan_start; i < chan_end; i++) |
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MCI_GPM_CLR_CHANNEL_BIT(&channelmap, i); |
|
|
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send_wlan_chan: |
|
/* update and send wlan channels info to BT */ |
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for (i = 0; i < 4; i++) |
|
mci->wlan_channels[i] = channelmap[i]; |
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ar9003_mci_send_wlan_channels(ah); |
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ar9003_mci_state(ah, MCI_STATE_SEND_VERSION_QUERY); |
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} |
|
|
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void ath9k_mci_set_txpower(struct ath_softc *sc, bool setchannel, |
|
bool concur_tx) |
|
{ |
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struct ath_hw *ah = sc->sc_ah; |
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struct ath9k_hw_mci *mci_hw = &sc->sc_ah->btcoex_hw.mci; |
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bool old_concur_tx = mci_hw->concur_tx; |
|
|
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if (!(mci_hw->config & ATH_MCI_CONFIG_CONCUR_TX)) { |
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mci_hw->concur_tx = false; |
|
return; |
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} |
|
|
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if (!IS_CHAN_2GHZ(ah->curchan)) |
|
return; |
|
|
|
if (setchannel) { |
|
struct ath9k_hw_cal_data *caldata = &sc->cur_chan->caldata; |
|
if (IS_CHAN_HT40PLUS(ah->curchan) && |
|
(ah->curchan->channel > caldata->channel) && |
|
(ah->curchan->channel <= caldata->channel + 20)) |
|
return; |
|
if (IS_CHAN_HT40MINUS(ah->curchan) && |
|
(ah->curchan->channel < caldata->channel) && |
|
(ah->curchan->channel >= caldata->channel - 20)) |
|
return; |
|
mci_hw->concur_tx = false; |
|
} else |
|
mci_hw->concur_tx = concur_tx; |
|
|
|
if (old_concur_tx != mci_hw->concur_tx) |
|
ath9k_hw_set_txpowerlimit(ah, sc->cur_chan->txpower, false); |
|
} |
|
|
|
static void ath9k_mci_stomp_audio(struct ath_softc *sc) |
|
{ |
|
struct ath_hw *ah = sc->sc_ah; |
|
struct ath_btcoex *btcoex = &sc->btcoex; |
|
struct ath_mci_profile *mci = &btcoex->mci; |
|
|
|
if (!mci->num_sco && !mci->num_a2dp) |
|
return; |
|
|
|
if (ah->stats.avgbrssi > 25) { |
|
btcoex->stomp_audio = 0; |
|
return; |
|
} |
|
|
|
btcoex->stomp_audio++; |
|
} |
|
void ath9k_mci_update_rssi(struct ath_softc *sc) |
|
{ |
|
struct ath_hw *ah = sc->sc_ah; |
|
struct ath_btcoex *btcoex = &sc->btcoex; |
|
struct ath9k_hw_mci *mci_hw = &sc->sc_ah->btcoex_hw.mci; |
|
|
|
ath9k_mci_stomp_audio(sc); |
|
|
|
if (!(mci_hw->config & ATH_MCI_CONFIG_CONCUR_TX)) |
|
return; |
|
|
|
if (ah->stats.avgbrssi >= 40) { |
|
if (btcoex->rssi_count < 0) |
|
btcoex->rssi_count = 0; |
|
if (++btcoex->rssi_count >= ATH_MCI_CONCUR_TX_SWITCH) { |
|
btcoex->rssi_count = 0; |
|
ath9k_mci_set_txpower(sc, false, true); |
|
} |
|
} else { |
|
if (btcoex->rssi_count > 0) |
|
btcoex->rssi_count = 0; |
|
if (--btcoex->rssi_count <= -ATH_MCI_CONCUR_TX_SWITCH) { |
|
btcoex->rssi_count = 0; |
|
ath9k_mci_set_txpower(sc, false, false); |
|
} |
|
} |
|
}
|
|
|