1 files changed, 112 insertions, 62 deletions

diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c
index a533ed60bb4..bd2c580d1f1 100644
--- a/drivers/net/wireless/ath5k/base.c
+++ b/drivers/net/wireless/ath5k/base.c
@@ -232,13 +232,14 @@ static void ath5k_configure_filter(struct ieee80211_hw *hw,
 		int mc_count, struct dev_mc_list *mclist);
 static int ath5k_set_key(struct ieee80211_hw *hw,
 		enum set_key_cmd cmd,
-		const u8 *local_addr, const u8 *addr,
+		struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 		struct ieee80211_key_conf *key);
 static int ath5k_get_stats(struct ieee80211_hw *hw,
 		struct ieee80211_low_level_stats *stats);
 static int ath5k_get_tx_stats(struct ieee80211_hw *hw,
 		struct ieee80211_tx_queue_stats *stats);
 static u64 ath5k_get_tsf(struct ieee80211_hw *hw);
+static void ath5k_set_tsf(struct ieee80211_hw *hw, u64 tsf);
 static void ath5k_reset_tsf(struct ieee80211_hw *hw);
 static int ath5k_beacon_update(struct ath5k_softc *sc,
 		struct sk_buff *skb);
@@ -261,6 +262,7 @@ static struct ieee80211_ops ath5k_hw_ops = {
 	.conf_tx 	= NULL,
 	.get_tx_stats 	= ath5k_get_tx_stats,
 	.get_tsf 	= ath5k_get_tsf,
+	.set_tsf 	= ath5k_set_tsf,
 	.reset_tsf 	= ath5k_reset_tsf,
 	.bss_info_changed = ath5k_bss_info_changed,
 };
@@ -347,9 +349,9 @@ static inline u64 ath5k_extend_tsf(struct ath5k_hw *ah, u32 rstamp)
 }
 
 /* Interrupt handling */
-static int 	ath5k_init(struct ath5k_softc *sc, bool is_resume);
+static int 	ath5k_init(struct ath5k_softc *sc);
 static int 	ath5k_stop_locked(struct ath5k_softc *sc);
-static int 	ath5k_stop_hw(struct ath5k_softc *sc, bool is_suspend);
+static int 	ath5k_stop_hw(struct ath5k_softc *sc);
 static irqreturn_t ath5k_intr(int irq, void *dev_id);
 static void 	ath5k_tasklet_reset(unsigned long data);
 
@@ -653,8 +655,6 @@ ath5k_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 
 	ath5k_led_off(sc);
 
-	ath5k_stop_hw(sc, true);
-
 	free_irq(pdev->irq, sc);
 	pci_save_state(pdev);
 	pci_disable_device(pdev);
@@ -689,14 +689,9 @@ ath5k_pci_resume(struct pci_dev *pdev)
 		goto err_no_irq;
 	}
 
-	err = ath5k_init(sc, true);
-	if (err)
-		goto err_irq;
 	ath5k_led_enable(sc);
-
 	return 0;
-err_irq:
-	free_irq(pdev->irq, sc);
+
 err_no_irq:
 	pci_disable_device(pdev);
 	return err;
@@ -1098,6 +1093,42 @@ ath5k_hw_to_driver_rix(struct ath5k_softc *sc, int hw_rix)
 * Buffers setup *
 \***************/
 
+static
+struct sk_buff *ath5k_rx_skb_alloc(struct ath5k_softc *sc, dma_addr_t *skb_addr)
+{
+	struct sk_buff *skb;
+	unsigned int off;
+
+	/*
+	 * Allocate buffer with headroom_needed space for the
+	 * fake physical layer header at the start.
+	 */
+	skb = dev_alloc_skb(sc->rxbufsize + sc->cachelsz - 1);
+
+	if (!skb) {
+		ATH5K_ERR(sc, "can't alloc skbuff of size %u\n",
+				sc->rxbufsize + sc->cachelsz - 1);
+		return NULL;
+	}
+	/*
+	 * Cache-line-align.  This is important (for the
+	 * 5210 at least) as not doing so causes bogus data
+	 * in rx'd frames.
+	 */
+	off = ((unsigned long)skb->data) % sc->cachelsz;
+	if (off != 0)
+		skb_reserve(skb, sc->cachelsz - off);
+
+	*skb_addr = pci_map_single(sc->pdev,
+		skb->data, sc->rxbufsize, PCI_DMA_FROMDEVICE);
+	if (unlikely(pci_dma_mapping_error(sc->pdev, *skb_addr))) {
+		ATH5K_ERR(sc, "%s: DMA mapping failed\n", __func__);
+		dev_kfree_skb(skb);
+		return NULL;
+	}
+	return skb;
+}
+
 static int
 ath5k_rxbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf)
 {
@@ -1105,37 +1136,11 @@ ath5k_rxbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf)
 	struct sk_buff *skb = bf->skb;
 	struct ath5k_desc *ds;
 
-	if (likely(skb == NULL)) {
-		unsigned int off;
-
-		/*
-		 * Allocate buffer with headroom_needed space for the
-		 * fake physical layer header at the start.
-		 */
-		skb = dev_alloc_skb(sc->rxbufsize + sc->cachelsz - 1);
-		if (unlikely(skb == NULL)) {
-			ATH5K_ERR(sc, "can't alloc skbuff of size %u\n",
-					sc->rxbufsize + sc->cachelsz - 1);
+	if (!skb) {
+		skb = ath5k_rx_skb_alloc(sc, &bf->skbaddr);
+		if (!skb)
 			return -ENOMEM;
-		}
-		/*
-		 * Cache-line-align.  This is important (for the
-		 * 5210 at least) as not doing so causes bogus data
-		 * in rx'd frames.
-		 */
-		off = ((unsigned long)skb->data) % sc->cachelsz;
-		if (off != 0)
-			skb_reserve(skb, sc->cachelsz - off);
-
 		bf->skb = skb;
-		bf->skbaddr = pci_map_single(sc->pdev,
-			skb->data, sc->rxbufsize, PCI_DMA_FROMDEVICE);
-		if (unlikely(pci_dma_mapping_error(sc->pdev, bf->skbaddr))) {
-			ATH5K_ERR(sc, "%s: DMA mapping failed\n", __func__);
-			dev_kfree_skb(skb);
-			bf->skb = NULL;
-			return -ENOMEM;
-		}
 	}
 
 	/*
@@ -1178,6 +1183,10 @@ ath5k_txbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf)
 	struct ieee80211_rate *rate;
 	unsigned int mrr_rate[3], mrr_tries[3];
 	int i, ret;
+	u16 hw_rate;
+	u16 cts_rate = 0;
+	u16 duration = 0;
+	u8 rc_flags;
 
 	flags = AR5K_TXDESC_INTREQ | AR5K_TXDESC_CLRDMASK;
 
@@ -1185,11 +1194,30 @@ ath5k_txbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf)
 	bf->skbaddr = pci_map_single(sc->pdev, skb->data, skb->len,
 			PCI_DMA_TODEVICE);
 
+	rate = ieee80211_get_tx_rate(sc->hw, info);
+
 	if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 		flags |= AR5K_TXDESC_NOACK;
 
+	rc_flags = info->control.rates[0].flags;
+	hw_rate = (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) ?
+		rate->hw_value_short : rate->hw_value;
+
 	pktlen = skb->len;
 
+	if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
+		flags |= AR5K_TXDESC_RTSENA;
+		cts_rate = ieee80211_get_rts_cts_rate(sc->hw, info)->hw_value;
+		duration = le16_to_cpu(ieee80211_rts_duration(sc->hw,
+			sc->vif, pktlen, info));
+	}
+	if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
+		flags |= AR5K_TXDESC_CTSENA;
+		cts_rate = ieee80211_get_rts_cts_rate(sc->hw, info)->hw_value;
+		duration = le16_to_cpu(ieee80211_ctstoself_duration(sc->hw,
+			sc->vif, pktlen, info));
+	}
+
 	if (info->control.hw_key) {
 		keyidx = info->control.hw_key->hw_key_idx;
 		pktlen += info->control.hw_key->icv_len;
@@ -1197,8 +1225,9 @@ ath5k_txbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf)
 	ret = ah->ah_setup_tx_desc(ah, ds, pktlen,
 		ieee80211_get_hdrlen_from_skb(skb), AR5K_PKT_TYPE_NORMAL,
 		(sc->power_level * 2),
-		ieee80211_get_tx_rate(sc->hw, info)->hw_value,
-		info->control.rates[0].count, keyidx, 0, flags, 0, 0);
+		hw_rate,
+		info->control.rates[0].count, keyidx, 0, flags,
+		cts_rate, duration);
 	if (ret)
 		goto err_unmap;
 
@@ -1664,7 +1693,8 @@ ath5k_tasklet_rx(unsigned long data)
 {
 	struct ieee80211_rx_status rxs = {};
 	struct ath5k_rx_status rs = {};
-	struct sk_buff *skb;
+	struct sk_buff *skb, *next_skb;
+	dma_addr_t next_skb_addr;
 	struct ath5k_softc *sc = (void *)data;
 	struct ath5k_buf *bf, *bf_last;
 	struct ath5k_desc *ds;
@@ -1749,10 +1779,17 @@ ath5k_tasklet_rx(unsigned long data)
 				goto next;
 		}
 accept:
+		next_skb = ath5k_rx_skb_alloc(sc, &next_skb_addr);
+
+		/*
+		 * If we can't replace bf->skb with a new skb under memory
+		 * pressure, just skip this packet
+		 */
+		if (!next_skb)
+			goto next;
+
 		pci_unmap_single(sc->pdev, bf->skbaddr, sc->rxbufsize,
 				PCI_DMA_FROMDEVICE);
-		bf->skb = NULL;
-
 		skb_put(skb, rs.rs_datalen);
 
 		/* The MAC header is padded to have 32-bit boundary if the
@@ -1825,6 +1862,9 @@ accept:
 			ath5k_check_ibss_tsf(sc, skb, &rxs);
 
 		__ieee80211_rx(sc->hw, skb, &rxs);
+
+		bf->skb = next_skb;
+		bf->skbaddr = next_skb_addr;
 next:
 		list_move_tail(&bf->list, &sc->rxbuf);
 	} while (ath5k_rxbuf_setup(sc, bf) == 0);
@@ -2207,18 +2247,13 @@ ath5k_beacon_config(struct ath5k_softc *sc)
 \********************/
 
 static int
-ath5k_init(struct ath5k_softc *sc, bool is_resume)
+ath5k_init(struct ath5k_softc *sc)
 {
 	struct ath5k_hw *ah = sc->ah;
 	int ret, i;
 
 	mutex_lock(&sc->lock);
 
-	if (is_resume && !test_bit(ATH_STAT_STARTED, sc->status))
-		goto out_ok;
-
-	__clear_bit(ATH_STAT_STARTED, sc->status);
-
 	ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "mode %d\n", sc->opmode);
 
 	/*
@@ -2250,15 +2285,12 @@ ath5k_init(struct ath5k_softc *sc, bool is_resume)
 	for (i = 0; i < AR5K_KEYTABLE_SIZE; i++)
 		ath5k_hw_reset_key(ah, i);
 
-	__set_bit(ATH_STAT_STARTED, sc->status);
-
 	/* Set ack to be sent at low bit-rates */
 	ath5k_hw_set_ack_bitrate_high(ah, false);
 
 	mod_timer(&sc->calib_tim, round_jiffies(jiffies +
 			msecs_to_jiffies(ath5k_calinterval * 1000)));
 
-out_ok:
 	ret = 0;
 done:
 	mmiowb();
@@ -2313,7 +2345,7 @@ ath5k_stop_locked(struct ath5k_softc *sc)
  * stop is preempted).
  */
 static int
-ath5k_stop_hw(struct ath5k_softc *sc, bool is_suspend)
+ath5k_stop_hw(struct ath5k_softc *sc)
 {
 	int ret;
 
@@ -2344,8 +2376,6 @@ ath5k_stop_hw(struct ath5k_softc *sc, bool is_suspend)
 		}
 	}
 	ath5k_txbuf_free(sc, sc->bbuf);
-	if (!is_suspend)
-		__clear_bit(ATH_STAT_STARTED, sc->status);
 
 	mmiowb();
 	mutex_unlock(&sc->lock);
@@ -2598,6 +2628,17 @@ ath5k_init_leds(struct ath5k_softc *sc)
 		sc->led_pin = 1;
 		sc->led_on = 1;  /* active high */
 	}
+	/*
+	 * Pin 3 on Foxconn chips used in Acer Aspire One (0x105b:e008) and
+	 * in emachines notebooks with AMBIT subsystem.
+	 */
+	if (pdev->subsystem_vendor == PCI_VENDOR_ID_FOXCONN ||
+	    pdev->subsystem_vendor == PCI_VENDOR_ID_AMBIT) {
+		__set_bit(ATH_STAT_LEDSOFT, sc->status);
+		sc->led_pin = 3;
+		sc->led_on = 0;  /* active low */
+	}
+
 	if (!test_bit(ATH_STAT_LEDSOFT, sc->status))
 		goto out;
 
@@ -2745,12 +2786,12 @@ ath5k_reset_wake(struct ath5k_softc *sc)
 
 static int ath5k_start(struct ieee80211_hw *hw)
 {
-	return ath5k_init(hw->priv, false);
+	return ath5k_init(hw->priv);
 }
 
 static void ath5k_stop(struct ieee80211_hw *hw)
 {
-	ath5k_stop_hw(hw->priv, false);
+	ath5k_stop_hw(hw->priv);
 }
 
 static int ath5k_add_interface(struct ieee80211_hw *hw,
@@ -2999,8 +3040,8 @@ static void ath5k_configure_filter(struct ieee80211_hw *hw,
 
 static int
 ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
-		const u8 *local_addr, const u8 *addr,
-		struct ieee80211_key_conf *key)
+	      struct ieee80211_vif *vif, struct ieee80211_sta *sta,
+	      struct ieee80211_key_conf *key)
 {
 	struct ath5k_softc *sc = hw->priv;
 	int ret = 0;
@@ -3023,7 +3064,8 @@ ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 
 	switch (cmd) {
 	case SET_KEY:
-		ret = ath5k_hw_set_key(sc->ah, key->keyidx, key, addr);
+		ret = ath5k_hw_set_key(sc->ah, key->keyidx, key,
+				       sta ? sta->addr : NULL);
 		if (ret) {
 			ATH5K_ERR(sc, "can't set the key\n");
 			goto unlock;
@@ -3083,6 +3125,14 @@ ath5k_get_tsf(struct ieee80211_hw *hw)
 }
 
 static void
+ath5k_set_tsf(struct ieee80211_hw *hw, u64 tsf)
+{
+	struct ath5k_softc *sc = hw->priv;
+
+	ath5k_hw_set_tsf64(sc->ah, tsf);
+}
+
+static void
 ath5k_reset_tsf(struct ieee80211_hw *hw)
 {
 	struct ath5k_softc *sc = hw->priv;