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ath9k: MCI state machine based on MCI interrupt 

Cc: Wilson Tsao <wtsao@qca.qualcomm.com>
Cc: Senthil Balasubramanian <senthilb@qca.qualcomm.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Mohammed Shafi Shajakhan 2011-11-30 10:41:28 +05:30 committed by John W. Linville
parent 63d3296741
commit 19686ddf63
5 changed files with 359 additions and 1 deletions
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4
drivers/net/wireless/ath/ath9k/hw.c
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@ -2397,7 +2397,9 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
pCap->hw_caps |= ATH9K_HW_CAP_4KB_SPLITTRANS;
if (common->btcoex_enabled) {
if (AR_SREV_9300_20_OR_LATER(ah)) {
if (AR_SREV_9462(ah))
btcoex_hw->scheme = ATH_BTCOEX_CFG_MCI;
else if (AR_SREV_9300_20_OR_LATER(ah)) {
btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO_9300;
btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO_9300;

11
drivers/net/wireless/ath/ath9k/init.c
View File

@ -424,9 +424,17 @@ static int ath9k_init_btcoex(struct ath_softc *sc)
return -1;
txq = sc->tx.txq_map[WME_AC_BE];
ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum);
sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
break;
case ATH_BTCOEX_CFG_MCI:
sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE;
INIT_LIST_HEAD(&sc->btcoex.mci.info);
r = ath_mci_setup(sc);
if (r)
return r;
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) {
ah->btcoex_hw.mci.ready = false;
ah->btcoex_hw.mci.bt_state = 0;
@ -861,6 +869,9 @@ static void ath9k_deinit_softc(struct ath_softc *sc)
sc->sc_ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
ath_gen_timer_free(sc->sc_ah, sc->btcoex.no_stomp_timer);
if (sc->sc_ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_MCI)
ath_mci_cleanup(sc);
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
if (ATH_TXQ_SETUP(sc, i))
ath_tx_cleanupq(sc, &sc->tx.txq[i]);

3
drivers/net/wireless/ath/ath9k/main.c
View File

@ -742,6 +742,9 @@ void ath9k_tasklet(unsigned long data)
if (status & ATH9K_INT_GENTIMER)
ath_gen_timer_isr(sc->sc_ah);
if (status & ATH9K_INT_MCI)
ath_mci_intr(sc);
out:
/* re-enable hardware interrupt */
ath9k_hw_enable_interrupts(ah);

341
drivers/net/wireless/ath/ath9k/mci.c
View File

@ -184,6 +184,56 @@ static void ath_mci_update_scheme(struct ath_softc *sc)
ath9k_btcoex_timer_resume(sc);
}
static void ath_mci_cal_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
u32 payload[4] = {0, 0, 0, 0};
switch (opcode) {
case MCI_GPM_BT_CAL_REQ:
ath_dbg(common, ATH_DBG_MCI, "MCI received BT_CAL_REQ\n");
if (ar9003_mci_state(ah, MCI_STATE_BT, NULL) == MCI_BT_AWAKE) {
ar9003_mci_state(ah, MCI_STATE_SET_BT_CAL_START, NULL);
ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
} else
ath_dbg(common, ATH_DBG_MCI,
"MCI State mismatches: %d\n",
ar9003_mci_state(ah, MCI_STATE_BT, NULL));
break;
case MCI_GPM_BT_CAL_DONE:
ath_dbg(common, ATH_DBG_MCI, "MCI received BT_CAL_DONE\n");
if (ar9003_mci_state(ah, MCI_STATE_BT, NULL) == MCI_BT_CAL)
ath_dbg(common, ATH_DBG_MCI, "MCI error illegal!\n");
else
ath_dbg(common, ATH_DBG_MCI, "MCI BT not in CAL state\n");
break;
case MCI_GPM_BT_CAL_GRANT:
ath_dbg(common, ATH_DBG_MCI, "MCI received BT_CAL_GRANT\n");
/* Send WLAN_CAL_DONE for now */
ath_dbg(common, ATH_DBG_MCI, "MCI send WLAN_CAL_DONE\n");
MCI_GPM_SET_CAL_TYPE(payload, MCI_GPM_WLAN_CAL_DONE);
ar9003_mci_send_message(sc->sc_ah, MCI_GPM, 0, payload,
16, false, true);
break;
default:
ath_dbg(common, ATH_DBG_MCI, "MCI Unknown GPM CAL message\n");
break;
}
}
void ath_mci_process_profile(struct ath_softc *sc,
struct ath_mci_profile_info *info)
{
@ -256,6 +306,90 @@ void ath_mci_process_status(struct ath_softc *sc,
ath_mci_update_scheme(sc);
}
static void ath_mci_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_mci_profile_info profile_info;
struct ath_mci_profile_status profile_status;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
u32 version;
u8 major;
u8 minor;
u32 seq_num;
switch (opcode) {
case MCI_GPM_COEX_VERSION_QUERY:
ath_dbg(common, ATH_DBG_MCI,
"MCI Recv GPM COEX Version Query.\n");
version = ar9003_mci_state(ah,
MCI_STATE_SEND_WLAN_COEX_VERSION, NULL);
break;
case MCI_GPM_COEX_VERSION_RESPONSE:
ath_dbg(common, ATH_DBG_MCI,
"MCI Recv GPM COEX Version Response.\n");
major = *(rx_payload + MCI_GPM_COEX_B_MAJOR_VERSION);
minor = *(rx_payload + MCI_GPM_COEX_B_MINOR_VERSION);
ath_dbg(common, ATH_DBG_MCI,
"MCI BT Coex version: %d.%d\n", major, minor);
version = (major << 8) + minor;
version = ar9003_mci_state(ah,
MCI_STATE_SET_BT_COEX_VERSION, &version);
break;
case MCI_GPM_COEX_STATUS_QUERY:
ath_dbg(common, ATH_DBG_MCI,
"MCI Recv GPM COEX Status Query = 0x%02x.\n",
*(rx_payload + MCI_GPM_COEX_B_WLAN_BITMAP));
ar9003_mci_state(ah,
MCI_STATE_SEND_WLAN_CHANNELS, NULL);
break;
case MCI_GPM_COEX_BT_PROFILE_INFO:
ath_dbg(common, ATH_DBG_MCI,
"MCI Recv GPM Coex BT profile info\n");
memcpy(&profile_info,
(rx_payload + MCI_GPM_COEX_B_PROFILE_TYPE), 10);
if ((profile_info.type == MCI_GPM_COEX_PROFILE_UNKNOWN)
|| (profile_info.type >=
MCI_GPM_COEX_PROFILE_MAX)) {
ath_dbg(common, ATH_DBG_MCI,
"illegal profile type = %d,"
"state = %d\n", profile_info.type,
profile_info.start);
break;
}
ath_mci_process_profile(sc, &profile_info);
break;
case MCI_GPM_COEX_BT_STATUS_UPDATE:
profile_status.is_link = *(rx_payload +
MCI_GPM_COEX_B_STATUS_TYPE);
profile_status.conn_handle = *(rx_payload +
MCI_GPM_COEX_B_STATUS_LINKID);
profile_status.is_critical = *(rx_payload +
MCI_GPM_COEX_B_STATUS_STATE);
seq_num = *((u32 *)(rx_payload + 12));
ath_dbg(common, ATH_DBG_MCI,
"MCI Recv GPM COEX BT_Status_Update: "
"is_link=%d, linkId=%d, state=%d, SEQ=%d\n",
profile_status.is_link, profile_status.conn_handle,
profile_status.is_critical, seq_num);
ath_mci_process_status(sc, &profile_status);
break;
default:
ath_dbg(common, ATH_DBG_MCI,
"MCI Unknown GPM COEX message = 0x%02x\n", opcode);
break;
}
}
static int ath_mci_buf_alloc(struct ath_softc *sc, struct ath_mci_buf *buf)
{
@ -330,3 +464,210 @@ void ath_mci_cleanup(struct ath_softc *sc)
ath_mci_buf_free(sc, &mci->sched_buf);
ar9003_mci_cleanup(ah);
}
void ath_mci_intr(struct ath_softc *sc)
{
struct ath_mci_coex *mci = &sc->mci_coex;
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
u32 mci_int, mci_int_rxmsg;
u32 offset, subtype, opcode;
u32 *pgpm;
u32 more_data = MCI_GPM_MORE;
bool skip_gpm = false;
ar9003_mci_get_interrupt(sc->sc_ah, &mci_int, &mci_int_rxmsg);
if (ar9003_mci_state(ah, MCI_STATE_ENABLE, NULL) == 0) {
ar9003_mci_state(sc->sc_ah, MCI_STATE_INIT_GPM_OFFSET, NULL);
ath_dbg(common, ATH_DBG_MCI,
"MCI interrupt but MCI disabled\n");
ath_dbg(common, ATH_DBG_MCI,
"MCI interrupt: intr = 0x%x, intr_rxmsg = 0x%x\n",
mci_int, mci_int_rxmsg);
return;
}
if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE) {
u32 payload[4] = { 0xffffffff, 0xffffffff,
0xffffffff, 0xffffff00};
/*
* The following REMOTE_RESET and SYS_WAKING used to sent
* only when BT wake up. Now they are always sent, as a
* recovery method to reset BT MCI's RX alignment.
*/
ath_dbg(common, ATH_DBG_MCI, "MCI interrupt send REMOTE_RESET\n");
ar9003_mci_send_message(ah, MCI_REMOTE_RESET, 0,
payload, 16, true, false);
ath_dbg(common, ATH_DBG_MCI, "MCI interrupt send SYS_WAKING\n");
ar9003_mci_send_message(ah, MCI_SYS_WAKING, 0,
NULL, 0, true, false);
mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE;
ar9003_mci_state(ah, MCI_STATE_RESET_REQ_WAKE, NULL);
/*
* always do this for recovery and 2G/5G toggling and LNA_TRANS
*/
ath_dbg(common, ATH_DBG_MCI, "MCI Set BT state to AWAKE.\n");
ar9003_mci_state(ah, MCI_STATE_SET_BT_AWAKE, NULL);
}
/* Processing SYS_WAKING/SYS_SLEEPING */
if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING) {
mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING;
if (ar9003_mci_state(ah, MCI_STATE_BT, NULL) == MCI_BT_SLEEP) {
if (ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP, NULL)
== MCI_BT_SLEEP)
ath_dbg(common, ATH_DBG_MCI,
"MCI BT stays in sleep mode\n");
else {
ath_dbg(common, ATH_DBG_MCI,
"MCI Set BT state to AWAKE.\n");
ar9003_mci_state(ah,
MCI_STATE_SET_BT_AWAKE, NULL);
}
} else
ath_dbg(common, ATH_DBG_MCI,
"MCI BT stays in AWAKE mode.\n");
}
if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING) {
mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING;
if (ar9003_mci_state(ah, MCI_STATE_BT, NULL) == MCI_BT_AWAKE) {
if (ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP, NULL)
== MCI_BT_AWAKE)
ath_dbg(common, ATH_DBG_MCI,
"MCI BT stays in AWAKE mode.\n");
else {
ath_dbg(common, ATH_DBG_MCI,
"MCI SetBT state to SLEEP\n");
ar9003_mci_state(ah, MCI_STATE_SET_BT_SLEEP,
NULL);
}
} else
ath_dbg(common, ATH_DBG_MCI,
"MCI BT stays in SLEEP mode\n");
}
if ((mci_int & AR_MCI_INTERRUPT_RX_INVALID_HDR) ||
(mci_int & AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT)) {
ath_dbg(common, ATH_DBG_MCI, "MCI RX broken, skip GPM msgs\n");
ar9003_mci_state(ah, MCI_STATE_RECOVER_RX, NULL);
skip_gpm = true;
}
if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SCHD_INFO) {
mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SCHD_INFO;
offset = ar9003_mci_state(ah, MCI_STATE_LAST_SCHD_MSG_OFFSET,
NULL);
}
if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_GPM) {
mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_GPM;
while (more_data == MCI_GPM_MORE) {
pgpm = mci->gpm_buf.bf_addr;
offset = ar9003_mci_state(ah,
MCI_STATE_NEXT_GPM_OFFSET, &more_data);
if (offset == MCI_GPM_INVALID)
break;
pgpm += (offset >> 2);
/*
* The first dword is timer.
* The real data starts from 2nd dword.
*/
subtype = MCI_GPM_TYPE(pgpm);
opcode = MCI_GPM_OPCODE(pgpm);
if (!skip_gpm) {
if (MCI_GPM_IS_CAL_TYPE(subtype))
ath_mci_cal_msg(sc, subtype,
(u8 *) pgpm);
else {
switch (subtype) {
case MCI_GPM_COEX_AGENT:
ath_mci_msg(sc, opcode,
(u8 *) pgpm);
break;
default:
break;
}
}
}
MCI_GPM_RECYCLE(pgpm);
}
}
if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_HW_MSG_MASK) {
if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_LNA_CONTROL)
mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_LNA_CONTROL;
if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_LNA_INFO) {
mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_LNA_INFO;
ath_dbg(common, ATH_DBG_MCI, "MCI LNA_INFO\n");
}
if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_INFO) {
int value_dbm = ar9003_mci_state(ah,
MCI_STATE_CONT_RSSI_POWER, NULL);
mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_INFO;
if (ar9003_mci_state(ah, MCI_STATE_CONT_TXRX, NULL))
ath_dbg(common, ATH_DBG_MCI,
"MCI CONT_INFO: "
"(tx) pri = %d, pwr = %d dBm\n",
ar9003_mci_state(ah,
MCI_STATE_CONT_PRIORITY, NULL),
value_dbm);
else
ath_dbg(common, ATH_DBG_MCI,
"MCI CONT_INFO:"
"(rx) pri = %d,pwr = %d dBm\n",
ar9003_mci_state(ah,
MCI_STATE_CONT_PRIORITY, NULL),
value_dbm);
}
if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_NACK) {
mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_NACK;
ath_dbg(common, ATH_DBG_MCI, "MCI CONT_NACK\n");
}
if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_RST) {
mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_RST;
ath_dbg(common, ATH_DBG_MCI, "MCI CONT_RST\n");
}
}
if ((mci_int & AR_MCI_INTERRUPT_RX_INVALID_HDR) ||
(mci_int & AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT))
mci_int &= ~(AR_MCI_INTERRUPT_RX_INVALID_HDR |
AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT);
if (mci_int_rxmsg & 0xfffffffe)
ath_dbg(common, ATH_DBG_MCI,
"MCI not processed mci_int_rxmsg = 0x%x\n",
mci_int_rxmsg);
}

1
drivers/net/wireless/ath/ath9k/mci.h
View File

@ -134,4 +134,5 @@ void ath_mci_process_status(struct ath_softc *sc,
struct ath_mci_profile_status *status);
int ath_mci_setup(struct ath_softc *sc);
void ath_mci_cleanup(struct ath_softc *sc);
void ath_mci_intr(struct ath_softc *sc);
#endif