Merge branch 'perf/core' into perf/uprobes

Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 114 insertions, 10 deletions

diff --git a/drivers/net/wireless/ath/ath9k/gpio.c b/drivers/net/wireless/ath/ath9k/gpio.c
index 597c84e31ad..fbe23de1297 100644
--- a/drivers/net/wireless/ath/ath9k/gpio.c
+++ b/drivers/net/wireless/ath/ath9k/gpio.c
@@ -110,6 +110,8 @@ void ath_start_rfkill_poll(struct ath_softc *sc)
 		wiphy_rfkill_start_polling(sc->hw->wiphy);
 }
 
+#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
+
 /******************/
 /*     BTCOEX     */
 /******************/
@@ -245,13 +247,10 @@ static void ath_btcoex_no_stomp_timer(void *arg)
 	ath9k_ps_restore(sc);
 }
 
-int ath_init_btcoex_timer(struct ath_softc *sc)
+static int ath_init_btcoex_timer(struct ath_softc *sc)
 {
 	struct ath_btcoex *btcoex = &sc->btcoex;
 
-	if (ath9k_hw_get_btcoex_scheme(sc->sc_ah) == ATH_BTCOEX_CFG_NONE)
-		return 0;
-
 	btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD * 1000;
 	btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
 		btcoex->btcoex_period / 100;
@@ -284,9 +283,6 @@ void ath9k_btcoex_timer_resume(struct ath_softc *sc)
 
 	ath_dbg(ath9k_hw_common(ah), BTCOEX, "Starting btcoex timers\n");
 
-	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
-		return;
-
 	/* make sure duty cycle timer is also stopped when resuming */
 	if (btcoex->hw_timer_enabled)
 		ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);
@@ -307,9 +303,6 @@ void ath9k_btcoex_timer_pause(struct ath_softc *sc)
 	struct ath_btcoex *btcoex = &sc->btcoex;
 	struct ath_hw *ah = sc->sc_ah;
 
-	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
-		return;
-
 	del_timer_sync(&btcoex->period_timer);
 
 	if (btcoex->hw_timer_enabled)
@@ -317,3 +310,114 @@ void ath9k_btcoex_timer_pause(struct ath_softc *sc)
 
 	btcoex->hw_timer_enabled = false;
 }
+
+u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen)
+{
+	struct ath_mci_profile *mci = &sc->btcoex.mci;
+	u16 aggr_limit = 0;
+
+	if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) && mci->aggr_limit)
+		aggr_limit = (max_4ms_framelen * mci->aggr_limit) >> 4;
+	else if (sc->sc_flags & SC_OP_BT_PRIORITY_DETECTED)
+		aggr_limit = min((max_4ms_framelen * 3) / 8,
+				 (u32)ATH_AMPDU_LIMIT_MAX);
+
+	return aggr_limit;
+}
+
+void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status)
+{
+	struct ath_hw *ah = sc->sc_ah;
+
+	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
+		if (status & ATH9K_INT_GENTIMER)
+			ath_gen_timer_isr(sc->sc_ah);
+
+	if (status & ATH9K_INT_MCI)
+		ath_mci_intr(sc);
+}
+
+void ath9k_start_btcoex(struct ath_softc *sc)
+{
+	struct ath_hw *ah = sc->sc_ah;
+
+	if ((ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) &&
+	    !ah->btcoex_hw.enabled) {
+		if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
+			ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
+						   AR_STOMP_LOW_WLAN_WGHT);
+		ath9k_hw_btcoex_enable(ah);
+
+		if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
+			ath9k_btcoex_timer_resume(sc);
+	}
+}
+
+void ath9k_stop_btcoex(struct ath_softc *sc)
+{
+	struct ath_hw *ah = sc->sc_ah;
+
+	if (ah->btcoex_hw.enabled &&
+	    ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
+		ath9k_hw_btcoex_disable(ah);
+		if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
+			ath9k_btcoex_timer_pause(sc);
+		if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_MCI)
+			ath_mci_flush_profile(&sc->btcoex.mci);
+	}
+}
+
+void ath9k_deinit_btcoex(struct ath_softc *sc)
+{
+        if ((sc->btcoex.no_stomp_timer) &&
+	    ath9k_hw_get_btcoex_scheme(sc->sc_ah) == ATH_BTCOEX_CFG_3WIRE)
+		ath_gen_timer_free(sc->sc_ah, sc->btcoex.no_stomp_timer);
+
+	if (ath9k_hw_get_btcoex_scheme(sc->sc_ah) == ATH_BTCOEX_CFG_MCI)
+		ath_mci_cleanup(sc);
+}
+
+int ath9k_init_btcoex(struct ath_softc *sc)
+{
+	struct ath_txq *txq;
+	struct ath_hw *ah = sc->sc_ah;
+	int r;
+
+	ath9k_hw_btcoex_init_scheme(ah);
+
+	switch (ath9k_hw_get_btcoex_scheme(sc->sc_ah)) {
+	case ATH_BTCOEX_CFG_NONE:
+		break;
+	case ATH_BTCOEX_CFG_2WIRE:
+		ath9k_hw_btcoex_init_2wire(sc->sc_ah);
+		break;
+	case ATH_BTCOEX_CFG_3WIRE:
+		ath9k_hw_btcoex_init_3wire(sc->sc_ah);
+		r = ath_init_btcoex_timer(sc);
+		if (r)
+			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;
+
+		ath9k_hw_btcoex_init_mci(ah);
+
+		break;
+	default:
+		WARN_ON(1);
+		break;
+	}
+
+	return 0;
+}
+
+#endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */