2  * Copyright (c) 2010-2011 Atheros Communications Inc.
17 #include <linux/dma-mapping.h>
31 	if (list_empty(&mci->info))  in ath_mci_find_profile()
34 	list_for_each_entry(entry, &mci->info, list) {  in ath_mci_find_profile()
35 		if (entry->conn_handle == info->conn_handle)  in ath_mci_find_profile()
48 	if ((mci->num_sco == ATH_MCI_MAX_SCO_PROFILE) &&  in ath_mci_add_profile()
49 	    (info->type == MCI_GPM_COEX_PROFILE_VOICE))  in ath_mci_add_profile()
52 	if (((NUM_PROF(mci) - mci->num_sco) == ATH_MCI_MAX_ACL_PROFILE) &&  in ath_mci_add_profile()
53 	    (info->type != MCI_GPM_COEX_PROFILE_VOICE))  in ath_mci_add_profile()
62 	list_add_tail(&entry->list, &mci->info);  in ath_mci_add_profile()
63 	if (info->type == MCI_GPM_COEX_PROFILE_VOICE) {  in ath_mci_add_profile()
64 		if (info->voice_type < sizeof(voice_priority))  in ath_mci_add_profile()
65 			mci->voice_priority = voice_priority[info->voice_type];  in ath_mci_add_profile()
67 			mci->voice_priority = 110;  in ath_mci_add_profile()
81 	list_del(&entry->list);  in ath_mci_del_profile()
89 	mci->aggr_limit = 0;  in ath_mci_flush_profile()
90 	mci->num_mgmt = 0;  in ath_mci_flush_profile()
92 	if (list_empty(&mci->info))  in ath_mci_flush_profile()
95 	list_for_each_entry_safe(info, tinfo, &mci->info, list) {  in ath_mci_flush_profile()
96 		list_del(&info->list);  in ath_mci_flush_profile()
104 	struct ath_mci_profile *mci = &btcoex->mci;  in ath_mci_adjust_aggr_limit()
105 	u32 wlan_airtime = btcoex->btcoex_period *  in ath_mci_adjust_aggr_limit()
106 				(100 - btcoex->duty_cycle) / 100;  in ath_mci_adjust_aggr_limit()
111 	 * adjusted half of wlan_airtime to ensure that the aggregation can fit  in ath_mci_adjust_aggr_limit()
115 	    (!mci->aggr_limit || (mci->aggr_limit > (2 * wlan_airtime))))  in ath_mci_adjust_aggr_limit()
116 		mci->aggr_limit = 2 * wlan_airtime;  in ath_mci_adjust_aggr_limit()
121 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);  in ath_mci_update_scheme()
122 	struct ath_btcoex *btcoex = &sc->btcoex;  in ath_mci_update_scheme()
123 	struct ath_mci_profile *mci = &btcoex->mci;  in ath_mci_update_scheme()
124 	struct ath9k_hw_mci *mci_hw = &sc->sc_ah->btcoex_hw.mci;  in ath_mci_update_scheme()
128 	if (mci_hw->config & ATH_MCI_CONFIG_DISABLE_TUNING)  in ath_mci_update_scheme()
131 	mci->aggr_limit = 0;  in ath_mci_update_scheme()
132 	btcoex->duty_cycle = ath_mci_duty_cycle[num_profile];  in ath_mci_update_scheme()
133 	btcoex->btcoex_period = ATH_MCI_DEF_BT_PERIOD;  in ath_mci_update_scheme()
135 		btcoex->bt_stomp_type = ATH_BTCOEX_STOMP_LOW;  in ath_mci_update_scheme()
137 		btcoex->bt_stomp_type = mci->num_mgmt ? ATH_BTCOEX_STOMP_ALL :  in ath_mci_update_scheme()
141 		info = list_first_entry(&mci->info,  in ath_mci_update_scheme()
144 		if (mci->num_sco) {  in ath_mci_update_scheme()
145 			if (info->T == 12)  in ath_mci_update_scheme()
146 				mci->aggr_limit = 8;  in ath_mci_update_scheme()
147 			else if (info->T == 6) {  in ath_mci_update_scheme()
148 				mci->aggr_limit = 6;  in ath_mci_update_scheme()
149 				btcoex->duty_cycle = 30;  in ath_mci_update_scheme()
151 				mci->aggr_limit = 6;  in ath_mci_update_scheme()
154 				mci->aggr_limit);  in ath_mci_update_scheme()
155 		} else if (mci->num_pan || mci->num_other_acl) {  in ath_mci_update_scheme()
160 			btcoex->duty_cycle = AR_SREV_9565(sc->sc_ah) ? 40 : 35;  in ath_mci_update_scheme()
161 			btcoex->btcoex_period = 53;  in ath_mci_update_scheme()
164 				btcoex->duty_cycle, btcoex->btcoex_period);  in ath_mci_update_scheme()
165 		} else if (mci->num_hid) {  in ath_mci_update_scheme()
166 			btcoex->duty_cycle = 30;  in ath_mci_update_scheme()
167 			mci->aggr_limit = 6;  in ath_mci_update_scheme()
173 		if (mci->num_hid == 2)  in ath_mci_update_scheme()
174 			btcoex->duty_cycle = 30;  in ath_mci_update_scheme()
175 		mci->aggr_limit = 6;  in ath_mci_update_scheme()
178 			btcoex->duty_cycle);  in ath_mci_update_scheme()
180 		mci->aggr_limit = 4;  in ath_mci_update_scheme()
186 	if (IS_CHAN_2GHZ(sc->sc_ah->curchan)) {  in ath_mci_update_scheme()
187 		if (IS_CHAN_HT(sc->sc_ah->curchan))  in ath_mci_update_scheme()
190 			btcoex->btcoex_period >>= 1;  in ath_mci_update_scheme()
194 	ath9k_hw_btcoex_disable(sc->sc_ah);  in ath_mci_update_scheme()
196 	if (IS_CHAN_5GHZ(sc->sc_ah->curchan))  in ath_mci_update_scheme()
199 	btcoex->duty_cycle += (mci->num_bdr ? ATH_MCI_BDR_DUTY_CYCLE : 0);  in ath_mci_update_scheme()
200 	if (btcoex->duty_cycle > ATH_MCI_MAX_DUTY_CYCLE)  in ath_mci_update_scheme()
201 		btcoex->duty_cycle = ATH_MCI_MAX_DUTY_CYCLE;  in ath_mci_update_scheme()
203 	btcoex->btcoex_no_stomp =  btcoex->btcoex_period *  in ath_mci_update_scheme()
204 		(100 - btcoex->duty_cycle) / 100;  in ath_mci_update_scheme()
206 	ath9k_hw_btcoex_enable(sc->sc_ah);  in ath_mci_update_scheme()
212 	struct ath_hw *ah = sc->sc_ah;  in ath_mci_cal_msg()
214 	struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;  in ath_mci_cal_msg()
219 		if (mci_hw->bt_state == MCI_BT_AWAKE) {  in ath_mci_cal_msg()
220 			mci_hw->bt_state = MCI_BT_CAL_START;  in ath_mci_cal_msg()
223 		ath_dbg(common, MCI, "MCI State : %d\n", mci_hw->bt_state);  in ath_mci_cal_msg()
227 		ar9003_mci_send_message(sc->sc_ah, MCI_GPM, 0, payload,  in ath_mci_cal_msg()
258 	struct ath_btcoex *btcoex = &sc->btcoex;  in ath_mci_set_concur_txprio()
259 	struct ath_mci_profile *mci = &btcoex->mci;  in ath_mci_set_concur_txprio()
263 	if (mci->num_mgmt) {  in ath_mci_set_concur_txprio()
265 		if (!mci->num_pan && !mci->num_other_acl)  in ath_mci_set_concur_txprio()
274 		if (mci->num_sco)  in ath_mci_set_concur_txprio()
275 			ath_mci_update_stomp_txprio(mci->voice_priority,  in ath_mci_set_concur_txprio()
277 		if (mci->num_other_acl)  in ath_mci_set_concur_txprio()
279 		if (mci->num_a2dp)  in ath_mci_set_concur_txprio()
281 		if (mci->num_hid)  in ath_mci_set_concur_txprio()
283 		if (mci->num_pan)  in ath_mci_set_concur_txprio()
292 	ath9k_hw_btcoex_set_concur_txprio(sc->sc_ah, stomp_txprio);  in ath_mci_set_concur_txprio()
298 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);  in ath_mci_process_profile()
299 	struct ath_btcoex *btcoex = &sc->btcoex;  in ath_mci_process_profile()
300 	struct ath_mci_profile *mci = &btcoex->mci;  in ath_mci_process_profile()
313 		if (entry->type != info->type) {  in ath_mci_process_profile()
320 	if (info->start) {  in ath_mci_process_profile()
333 	struct ath_btcoex *btcoex = &sc->btcoex;  in ath_mci_process_status()
334 	struct ath_mci_profile *mci = &btcoex->mci;  in ath_mci_process_status()
336 	int i = 0, old_num_mgmt = mci->num_mgmt;  in ath_mci_process_status()
339 	if (status->is_link)  in ath_mci_process_status()
342 	info.conn_handle = status->conn_handle;  in ath_mci_process_status()
346 	if (status->conn_handle >= ATH_MCI_MAX_PROFILE)  in ath_mci_process_status()
349 	if (status->is_critical)  in ath_mci_process_status()
350 		__set_bit(status->conn_handle, mci->status);  in ath_mci_process_status()
352 		__clear_bit(status->conn_handle, mci->status);  in ath_mci_process_status()
354 	mci->num_mgmt = 0;  in ath_mci_process_status()
356 		if (test_bit(i, mci->status))  in ath_mci_process_status()
357 			mci->num_mgmt++;  in ath_mci_process_status()
361 	if (old_num_mgmt != mci->num_mgmt)  in ath_mci_process_status()
369 	struct ath_hw *ah = sc->sc_ah;  in ath_mci_msg()
372 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);  in ath_mci_msg()
379 		ath_mci_flush_profile(&sc->btcoex.mci);  in ath_mci_msg()
431 		ieee80211_queue_work(sc->hw, &sc->mci_work);  in ath_mci_msg()
436 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);  in ath_mci_setup()
437 	struct ath_mci_coex *mci = &sc->mci_coex;  in ath_mci_setup()
438 	struct ath_mci_buf *buf = &mci->sched_buf;  in ath_mci_setup()
441 	buf->bf_addr = dmam_alloc_coherent(sc->dev,  in ath_mci_setup()
443 				  &buf->bf_paddr, GFP_KERNEL);  in ath_mci_setup()
445 	if (buf->bf_addr == NULL) {  in ath_mci_setup()
447 		return -ENOMEM;  in ath_mci_setup()
450 	memset(buf->bf_addr, MCI_GPM_RSVD_PATTERN,  in ath_mci_setup()
453 	mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE;  in ath_mci_setup()
455 	mci->gpm_buf.bf_len = ATH_MCI_GPM_BUF_SIZE;  in ath_mci_setup()
456 	mci->gpm_buf.bf_addr = mci->sched_buf.bf_addr + mci->sched_buf.bf_len;  in ath_mci_setup()
457 	mci->gpm_buf.bf_paddr = mci->sched_buf.bf_paddr + mci->sched_buf.bf_len;  in ath_mci_setup()
459 	ret = ar9003_mci_setup(sc->sc_ah, mci->gpm_buf.bf_paddr,  in ath_mci_setup()
460 			       mci->gpm_buf.bf_addr, (mci->gpm_buf.bf_len >> 4),  in ath_mci_setup()
461 			       mci->sched_buf.bf_paddr);  in ath_mci_setup()
467 	INIT_WORK(&sc->mci_work, ath9k_mci_work);  in ath_mci_setup()
475 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);  in ath_mci_cleanup()
476 	struct ath_hw *ah = sc->sc_ah;  in ath_mci_cleanup()
480 	ath_dbg(common, MCI, "MCI De-Initialized\n");  in ath_mci_cleanup()
485 	struct ath_mci_coex *mci = &sc->mci_coex;  in ath_mci_intr()
486 	struct ath_hw *ah = sc->sc_ah;  in ath_mci_intr()
488 	struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;  in ath_mci_intr()
495 	ar9003_mci_get_interrupt(sc->sc_ah, &mci_int, &mci_int_rxmsg);  in ath_mci_intr()
528 		if ((mci_hw->bt_state == MCI_BT_SLEEP) &&  in ath_mci_intr()
537 		if ((mci_hw->bt_state == MCI_BT_AWAKE) &&  in ath_mci_intr()
540 			mci_hw->bt_state = MCI_BT_SLEEP;  in ath_mci_intr()
558 			if (test_bit(ATH_OP_HW_RESET, &common->op_flags))  in ath_mci_intr()
561 			pgpm = mci->gpm_buf.bf_addr;  in ath_mci_intr()
603 			int value_dbm = MS(mci_hw->cont_status,  in ath_mci_intr()
609 				"MCI CONT_INFO: (%s) pri = %d pwr = %d dBm\n",  in ath_mci_intr()
610 				MS(mci_hw->cont_status, AR_MCI_CONT_TXRX) ?  in ath_mci_intr()
612 				MS(mci_hw->cont_status, AR_MCI_CONT_PRIORITY),  in ath_mci_intr()
633 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);  in ath_mci_enable()
635 	if (!common->btcoex_enabled)  in ath_mci_enable()
638 	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI)  in ath_mci_enable()
639 		sc->sc_ah->imask |= ATH9K_INT_MCI;  in ath_mci_enable()
644 	struct ath_hw *ah = sc->sc_ah;  in ath9k_mci_update_wlan_channels()
645 	struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;  in ath9k_mci_update_wlan_channels()
646 	struct ath9k_channel *chan = ah->curchan;  in ath9k_mci_update_wlan_channels()
658 	wlan_chan = chan->channel - 2402;  in ath9k_mci_update_wlan_channels()
660 	chan_start = wlan_chan - 10;  in ath9k_mci_update_wlan_channels()
666 		chan_start -= 20;  in ath9k_mci_update_wlan_channels()
669 	chan_start -= 7;  in ath9k_mci_update_wlan_channels()
675 		chan_end = ATH_MCI_NUM_BT_CHANNELS - 1;  in ath9k_mci_update_wlan_channels()
678 		"WLAN current channel %d mask BT channel %d - %d\n",  in ath9k_mci_update_wlan_channels()
687 		mci->wlan_channels[i] = channelmap[i];  in ath9k_mci_update_wlan_channels()
695 	struct ath_hw *ah = sc->sc_ah;  in ath9k_mci_set_txpower()
696 	struct ath9k_hw_mci *mci_hw = &sc->sc_ah->btcoex_hw.mci;  in ath9k_mci_set_txpower()
697 	bool old_concur_tx = mci_hw->concur_tx;  in ath9k_mci_set_txpower()
699 	if (!(mci_hw->config & ATH_MCI_CONFIG_CONCUR_TX)) {  in ath9k_mci_set_txpower()
700 		mci_hw->concur_tx = false;  in ath9k_mci_set_txpower()
704 	if (!IS_CHAN_2GHZ(ah->curchan))  in ath9k_mci_set_txpower()
708 		struct ath9k_hw_cal_data *caldata = &sc->cur_chan->caldata;  in ath9k_mci_set_txpower()
709 		if (IS_CHAN_HT40PLUS(ah->curchan) &&  in ath9k_mci_set_txpower()
710 		    (ah->curchan->channel > caldata->channel) &&  in ath9k_mci_set_txpower()
711 		    (ah->curchan->channel <= caldata->channel + 20))  in ath9k_mci_set_txpower()
713 		if (IS_CHAN_HT40MINUS(ah->curchan) &&  in ath9k_mci_set_txpower()
714 		    (ah->curchan->channel < caldata->channel) &&  in ath9k_mci_set_txpower()
715 		    (ah->curchan->channel >= caldata->channel - 20))  in ath9k_mci_set_txpower()
717 		mci_hw->concur_tx = false;  in ath9k_mci_set_txpower()
719 		mci_hw->concur_tx = concur_tx;  in ath9k_mci_set_txpower()
721 	if (old_concur_tx != mci_hw->concur_tx)  in ath9k_mci_set_txpower()
722 		ath9k_hw_set_txpowerlimit(ah, sc->cur_chan->txpower, false);  in ath9k_mci_set_txpower()
727 	struct ath_hw *ah = sc->sc_ah;  in ath9k_mci_stomp_audio()
728 	struct ath_btcoex *btcoex = &sc->btcoex;  in ath9k_mci_stomp_audio()
729 	struct ath_mci_profile *mci = &btcoex->mci;  in ath9k_mci_stomp_audio()
731 	if (!mci->num_sco && !mci->num_a2dp)  in ath9k_mci_stomp_audio()
734 	if (ah->stats.avgbrssi > 25) {  in ath9k_mci_stomp_audio()
735 		btcoex->stomp_audio = 0;  in ath9k_mci_stomp_audio()
739 	btcoex->stomp_audio++;  in ath9k_mci_stomp_audio()
743 	struct ath_hw *ah = sc->sc_ah;  in ath9k_mci_update_rssi()
744 	struct ath_btcoex *btcoex = &sc->btcoex;  in ath9k_mci_update_rssi()
745 	struct ath9k_hw_mci *mci_hw = &sc->sc_ah->btcoex_hw.mci;  in ath9k_mci_update_rssi()
749 	if (!(mci_hw->config & ATH_MCI_CONFIG_CONCUR_TX))  in ath9k_mci_update_rssi()
752 	if (ah->stats.avgbrssi >= 40) {  in ath9k_mci_update_rssi()
753 		if (btcoex->rssi_count < 0)  in ath9k_mci_update_rssi()
754 			btcoex->rssi_count = 0;  in ath9k_mci_update_rssi()
755 		if (++btcoex->rssi_count >= ATH_MCI_CONCUR_TX_SWITCH) {  in ath9k_mci_update_rssi()
756 			btcoex->rssi_count = 0;  in ath9k_mci_update_rssi()
760 		if (btcoex->rssi_count > 0)  in ath9k_mci_update_rssi()
761 			btcoex->rssi_count = 0;  in ath9k_mci_update_rssi()
762 		if (--btcoex->rssi_count <= -ATH_MCI_CONCUR_TX_SWITCH) {  in ath9k_mci_update_rssi()
763 			btcoex->rssi_count = 0;  in ath9k_mci_update_rssi()