/*
* This is the master bt coex timer which runs for every
* 45ms, bt traffic will be given priority during 55% of this
* period while wlan gets remaining 45%
*/
static void ath_btcoex_period_timer(unsigned long data)
{
struct ath_softc *sc = (struct ath_softc *) data;
struct ath_hw *ah = sc->sc_ah;
struct ath_btcoex *btcoex = &sc->btcoex;
u32 timer_period;
bool is_btscan;
ath_detect_bt_priority(sc);
is_btscan = sc->sc_flags & SC_OP_BT_SCAN;
spin_lock_bh(&btcoex->btcoex_lock);
ath9k_btcoex_bt_stomp(sc, is_btscan ? ATH_BTCOEX_STOMP_ALL :
btcoex->bt_stomp_type);
spin_unlock_bh(&btcoex->btcoex_lock);
if (btcoex->btcoex_period != btcoex->btcoex_no_stomp) {
if (btcoex->hw_timer_enabled)
ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
timer_period = is_btscan ? btcoex->btscan_no_stomp :
btcoex->btcoex_no_stomp;
ath9k_gen_timer_start(ah,
btcoex->no_stomp_timer,
(ath9k_hw_gettsf32(ah) +
timer_period), timer_period * 10);
btcoex->hw_timer_enabled = true;
}
mod_timer(&btcoex->period_timer, jiffies +
msecs_to_jiffies(ATH_BTCOEX_DEF_BT_PERIOD));
}
u32 ar9003_mci_state(struct ath_hw *ah, u32 state_type)
{
struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
u32 value = 0, tsf;
u8 query_type;
switch (state_type) {
case MCI_STATE_ENABLE:
if (mci->ready) {
value = REG_READ(ah, AR_BTCOEX_CTRL);
if ((value == 0xdeadbeef) || (value == 0xffffffff))
value = 0;
}
value &= AR_BTCOEX_CTRL_MCI_MODE_EN;
break;
case MCI_STATE_LAST_SCHD_MSG_OFFSET:
value = MS(REG_READ(ah, AR_MCI_RX_STATUS),
AR_MCI_RX_LAST_SCHD_MSG_INDEX);
/* Make it in bytes */
value <<= 4;
break;
case MCI_STATE_REMOTE_SLEEP:
value = MS(REG_READ(ah, AR_MCI_RX_STATUS),
AR_MCI_RX_REMOTE_SLEEP) ?
MCI_BT_SLEEP : MCI_BT_AWAKE;
break;
case MCI_STATE_SET_BT_AWAKE:
mci->bt_state = MCI_BT_AWAKE;
ar9003_mci_send_coex_version_query(ah, true);
ar9003_mci_send_coex_wlan_channels(ah, true);
if (mci->unhalt_bt_gpm)
ar9003_mci_send_coex_halt_bt_gpm(ah, false, true);
ar9003_mci_2g5g_switch(ah, false);
break;
case MCI_STATE_RESET_REQ_WAKE:
ar9003_mci_reset_req_wakeup(ah);
mci->update_2g5g = true;
if (mci->config & ATH_MCI_CONFIG_MCI_OBS_MASK) {
/* Check if we still have control of the GPIOs */
if ((REG_READ(ah, AR_GLB_GPIO_CONTROL) &
ATH_MCI_CONFIG_MCI_OBS_GPIO) !=
ATH_MCI_CONFIG_MCI_OBS_GPIO) {
ar9003_mci_observation_set_up(ah);
}
}
break;
case MCI_STATE_SEND_WLAN_COEX_VERSION:
ar9003_mci_send_coex_version_response(ah, true);
break;
case MCI_STATE_SEND_VERSION_QUERY:
ar9003_mci_send_coex_version_query(ah, true);
break;
case MCI_STATE_SEND_STATUS_QUERY:
query_type = MCI_GPM_COEX_QUERY_BT_TOPOLOGY;
ar9003_mci_send_coex_bt_status_query(ah, true, query_type);
break;
case MCI_STATE_RECOVER_RX:
tsf = ath9k_hw_gettsf32(ah);
if ((tsf - mci->last_recovery) <= MCI_RECOVERY_DUR_TSF) {
ath_dbg(ath9k_hw_common(ah), MCI,
"(MCI) ignore Rx recovery\n");
break;
}
ath_dbg(ath9k_hw_common(ah), MCI, "(MCI) RECOVER RX\n");
mci->last_recovery = tsf;
ar9003_mci_prep_interface(ah);
mci->query_bt = true;
mci->need_flush_btinfo = true;
ar9003_mci_send_coex_wlan_channels(ah, true);
ar9003_mci_2g5g_switch(ah, false);
break;
case MCI_STATE_NEED_FTP_STOMP:
value = !(mci->config & ATH_MCI_CONFIG_DISABLE_FTP_STOMP);
break;
case MCI_STATE_NEED_FLUSH_BT_INFO:
value = (!mci->unhalt_bt_gpm && mci->need_flush_btinfo) ? 1 : 0;
mci->need_flush_btinfo = false;
break;
default:
break;
}
return value;
}
