---

yaml
---
r: 111602
b: refs/heads/master
c: 00c5ae2
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 638266f7e879e34de4a4635049c15f5a58505e75
+refs/heads/master: 00c5ae2fa0f8191a1b204e71f0ee11359e3b2c06

trunk/drivers/net/tg3.c

@@ -3861,7 +3861,10 @@ static void tg3_tx(struct tg3 *tp)
 			return;
 		}
 
-		skb_dma_unmap(&tp->pdev->dev, skb, DMA_TO_DEVICE);
+		pci_unmap_single(tp->pdev,
+				 pci_unmap_addr(ri, mapping),
+				 skb_headlen(skb),
+				 PCI_DMA_TODEVICE);
 
 		ri->skb = NULL;
 
@@ -3871,6 +3874,12 @@ static void tg3_tx(struct tg3 *tp)
 			ri = &tp->tx_buffers[sw_idx];
 			if (unlikely(ri->skb != NULL || sw_idx == hw_idx))
 				tx_bug = 1;
+
+			pci_unmap_page(tp->pdev,
+				       pci_unmap_addr(ri, mapping),
+				       skb_shinfo(skb)->frags[i].size,
+				       PCI_DMA_TODEVICE);
+
 			sw_idx = NEXT_TX(sw_idx);
 		}
 
@@ -4624,16 +4633,12 @@ static int tigon3_dma_hwbug_workaround(struct tg3 *tp, struct sk_buff *skb,
 	} else {
 		/* New SKB is guaranteed to be linear. */
 		entry = *start;
-		ret = skb_dma_map(&tp->pdev->dev, new_skb, DMA_TO_DEVICE);
-		new_addr = skb_shinfo(new_skb)->dma_maps[0];
-
+		new_addr = pci_map_single(tp->pdev, new_skb->data, new_skb->len,
+					  PCI_DMA_TODEVICE);
 		/* Make sure new skb does not cross any 4G boundaries.
 		 * Drop the packet if it does.
 		 */
-		if (ret || tg3_4g_overflow_test(new_addr, new_skb->len)) {
-			if (!ret)
-				skb_dma_unmap(&tp->pdev->dev, new_skb,
-					      DMA_TO_DEVICE);
+		if (tg3_4g_overflow_test(new_addr, new_skb->len)) {
 			ret = -1;
 			dev_kfree_skb(new_skb);
 			new_skb = NULL;
@@ -4647,16 +4652,25 @@ static int tigon3_dma_hwbug_workaround(struct tg3 *tp, struct sk_buff *skb,
 	/* Now clean up the sw ring entries. */
 	i = 0;
 	while (entry != last_plus_one) {
+		int len;
+
+		if (i == 0)
+			len = skb_headlen(skb);
+		else
+			len = skb_shinfo(skb)->frags[i-1].size;
+		pci_unmap_single(tp->pdev,
+				 pci_unmap_addr(&tp->tx_buffers[entry], mapping),
+				 len, PCI_DMA_TODEVICE);
 		if (i == 0) {
 			tp->tx_buffers[entry].skb = new_skb;
+			pci_unmap_addr_set(&tp->tx_buffers[entry], mapping, new_addr);
 		} else {
 			tp->tx_buffers[entry].skb = NULL;
 		}
 		entry = NEXT_TX(entry);
 		i++;
 	}
 
-	skb_dma_unmap(&tp->pdev->dev, skb, DMA_TO_DEVICE);
 	dev_kfree_skb(skb);
 
 	return ret;
@@ -4691,9 +4705,8 @@ static void tg3_set_txd(struct tg3 *tp, int entry,
 static int tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct tg3 *tp = netdev_priv(dev);
-	u32 len, entry, base_flags, mss;
-	struct skb_shared_info *sp;
 	dma_addr_t mapping;
+	u32 len, entry, base_flags, mss;
 
 	len = skb_headlen(skb);
 
@@ -4752,16 +4765,11 @@ static int tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
 			       (vlan_tx_tag_get(skb) << 16));
 #endif
 
-	if (skb_dma_map(&tp->pdev->dev, skb, DMA_TO_DEVICE)) {
-		dev_kfree_skb(skb);
-		goto out_unlock;
-	}
-
-	sp = skb_shinfo(skb);
-
-	mapping = sp->dma_maps[0];
+	/* Queue skb data, a.k.a. the main skb fragment. */
+	mapping = pci_map_single(tp->pdev, skb->data, len, PCI_DMA_TODEVICE);
 
 	tp->tx_buffers[entry].skb = skb;
+	pci_unmap_addr_set(&tp->tx_buffers[entry], mapping, mapping);
 
 	tg3_set_txd(tp, entry, mapping, len, base_flags,
 		    (skb_shinfo(skb)->nr_frags == 0) | (mss << 1));
@@ -4777,8 +4785,13 @@ static int tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
 			skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
 			len = frag->size;
-			mapping = sp->dma_maps[i + 1];
+			mapping = pci_map_page(tp->pdev,
+					       frag->page,
+					       frag->page_offset,
+					       len, PCI_DMA_TODEVICE);
+
 			tp->tx_buffers[entry].skb = NULL;
+			pci_unmap_addr_set(&tp->tx_buffers[entry], mapping, mapping);
 
 			tg3_set_txd(tp, entry, mapping, len,
 				    base_flags, (i == last) | (mss << 1));
@@ -4846,10 +4859,9 @@ static int tg3_tso_bug(struct tg3 *tp, struct sk_buff *skb)
 static int tg3_start_xmit_dma_bug(struct sk_buff *skb, struct net_device *dev)
 {
 	struct tg3 *tp = netdev_priv(dev);
+	dma_addr_t mapping;
 	u32 len, entry, base_flags, mss;
-	struct skb_shared_info *sp;
 	int would_hit_hwbug;
-	dma_addr_t mapping;
 
 	len = skb_headlen(skb);
 
@@ -4930,16 +4942,11 @@ static int tg3_start_xmit_dma_bug(struct sk_buff *skb, struct net_device *dev)
 			       (vlan_tx_tag_get(skb) << 16));
 #endif
 
-	if (skb_dma_map(&tp->pdev->dev, skb, DMA_TO_DEVICE)) {
-		dev_kfree_skb(skb);
-		goto out_unlock;
-	}
-
-	sp = skb_shinfo(skb);
-
-	mapping = sp->dma_maps[0];
+	/* Queue skb data, a.k.a. the main skb fragment. */
+	mapping = pci_map_single(tp->pdev, skb->data, len, PCI_DMA_TODEVICE);
 
 	tp->tx_buffers[entry].skb = skb;
+	pci_unmap_addr_set(&tp->tx_buffers[entry], mapping, mapping);
 
 	would_hit_hwbug = 0;
 
@@ -4962,9 +4969,13 @@ static int tg3_start_xmit_dma_bug(struct sk_buff *skb, struct net_device *dev)
 			skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
 			len = frag->size;
-			mapping = sp->dma_maps[i + 1];
+			mapping = pci_map_page(tp->pdev,
+					       frag->page,
+					       frag->page_offset,
+					       len, PCI_DMA_TODEVICE);
 
 			tp->tx_buffers[entry].skb = NULL;
+			pci_unmap_addr_set(&tp->tx_buffers[entry], mapping, mapping);
 
 			if (tg3_4g_overflow_test(mapping, len))
 				would_hit_hwbug = 1;
@@ -5117,6 +5128,7 @@ static void tg3_free_rings(struct tg3 *tp)
 	for (i = 0; i < TG3_TX_RING_SIZE; ) {
 		struct tx_ring_info *txp;
 		struct sk_buff *skb;
+		int j;
 
 		txp = &tp->tx_buffers[i];
 		skb = txp->skb;
@@ -5126,11 +5138,22 @@ static void tg3_free_rings(struct tg3 *tp)
 			continue;
 		}
 
-		skb_dma_unmap(&tp->pdev->dev, skb, DMA_TO_DEVICE);
-
+		pci_unmap_single(tp->pdev,
+				 pci_unmap_addr(txp, mapping),
+				 skb_headlen(skb),
+				 PCI_DMA_TODEVICE);
 		txp->skb = NULL;
 
-		i += skb_shinfo(skb)->nr_frags + 1;
+		i++;
+
+		for (j = 0; j < skb_shinfo(skb)->nr_frags; j++) {
+			txp = &tp->tx_buffers[i & (TG3_TX_RING_SIZE - 1)];
+			pci_unmap_page(tp->pdev,
+				       pci_unmap_addr(txp, mapping),
+				       skb_shinfo(skb)->frags[j].size,
+				       PCI_DMA_TODEVICE);
+			i++;
+		}
 
 		dev_kfree_skb_any(skb);
 	}

trunk/drivers/net/tg3.h

@@ -2197,6 +2197,7 @@ struct ring_info {
 
 struct tx_ring_info {
 	struct sk_buff			*skb;
+	DECLARE_PCI_UNMAP_ADDR(mapping)
 	u32				prev_vlan_tag;
 };
 

trunk/drivers/net/wireless/ath9k/main.c

@@ -224,7 +224,7 @@ static void setup_ht_cap(struct ieee80211_ht_info *ht_info)
 
 	ht_info->ht_supported = 1;
 	ht_info->cap = (u16)IEEE80211_HT_CAP_SUP_WIDTH
-			|(u16)IEEE80211_HT_CAP_MIMO_PS
+			|(u16)IEEE80211_HT_CAP_SM_PS
 			|(u16)IEEE80211_HT_CAP_SGI_40
 			|(u16)IEEE80211_HT_CAP_DSSSCCK40;
 

trunk/drivers/net/wireless/iwlwifi/iwl-agn-rs.c

@@ -1153,8 +1153,8 @@ static int rs_switch_to_mimo2(struct iwl_priv *priv,
 	    !sta->ht_info.ht_supported)
 		return -1;
 
-	if (((sta->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS) >> 2)
-						== IWL_MIMO_PS_STATIC)
+	if (((sta->ht_info.cap & IEEE80211_HT_CAP_SM_PS) >> 2)
+						== WLAN_HT_CAP_SM_PS_STATIC)
 		return -1;
 
 	/* Need both Tx chains/antennas to support MIMO */

trunk/drivers/net/wireless/iwlwifi/iwl-agn.c

@@ -564,7 +564,7 @@ static void iwl4965_ht_conf(struct iwl_priv *priv,
 	if (!iwl_conf->is_ht)
 		return;
 
-	priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
+	priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
 
 	if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 		iwl_conf->sgf |= HT_SHORT_GI_20MHZ;

trunk/drivers/net/wireless/iwlwifi/iwl-core.c

@@ -399,8 +399,8 @@ static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
 
 	ht_info->cap |= (u16)IEEE80211_HT_CAP_GRN_FLD;
 	ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_20;
-	ht_info->cap |= (u16)(IEEE80211_HT_CAP_MIMO_PS &
-			     (IWL_MIMO_PS_NONE << 2));
+	ht_info->cap |= (u16)(IEEE80211_HT_CAP_SM_PS &
+			     (WLAN_HT_CAP_SM_PS_DISABLED << 2));
 
 	max_bit_rate = MAX_BIT_RATE_20_MHZ;
 	if (priv->hw_params.fat_channel & BIT(band)) {
@@ -709,7 +709,7 @@ static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 	bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 
 	/* # of Rx chains to use when expecting MIMO. */
-	if (is_single || (!is_cam && (priv->ps_mode == IWL_MIMO_PS_STATIC)))
+	if (is_single || (!is_cam && (priv->ps_mode == WLAN_HT_CAP_SM_PS_STATIC)))
 		return 2;
 	else
 		return 3;
@@ -721,14 +721,14 @@ static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 	bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 	/* # Rx chains when idling and maybe trying to save power */
 	switch (priv->ps_mode) {
-	case IWL_MIMO_PS_STATIC:
-	case IWL_MIMO_PS_DYNAMIC:
+	case WLAN_HT_CAP_SM_PS_STATIC:
+	case WLAN_HT_CAP_SM_PS_DYNAMIC:
 		idle_cnt = (is_cam) ? 2 : 1;
 		break;
-	case IWL_MIMO_PS_NONE:
+	case WLAN_HT_CAP_SM_PS_DISABLED:
 		idle_cnt = (is_cam) ? active_cnt : 1;
 		break;
-	case IWL_MIMO_PS_INVALID:
+	case WLAN_HT_CAP_SM_PS_INVALID:
 	default:
 		IWL_ERROR("invalide mimo ps mode %d\n", priv->ps_mode);
 		WARN_ON(1);
@@ -912,7 +912,7 @@ int iwl_init_drv(struct iwl_priv *priv)
 	priv->iw_mode = IEEE80211_IF_TYPE_STA;
 
 	priv->use_ant_b_for_management_frame = 1; /* start with ant B */
-	priv->ps_mode = IWL_MIMO_PS_NONE;
+	priv->ps_mode = WLAN_HT_CAP_SM_PS_DISABLED;
 
 	/* Choose which receivers/antennas to use */
 	iwl_set_rxon_chain(priv);

trunk/drivers/net/wireless/iwlwifi/iwl-dev.h

@@ -644,11 +644,6 @@ struct iwl_kw {
 #define IWL_CHANNEL_WIDTH_20MHZ   0
 #define IWL_CHANNEL_WIDTH_40MHZ   1
 
-#define IWL_MIMO_PS_STATIC        0
-#define IWL_MIMO_PS_NONE          3
-#define IWL_MIMO_PS_DYNAMIC       1
-#define IWL_MIMO_PS_INVALID       2
-
 #define IWL_OPERATION_MODE_AUTO     0
 #define IWL_OPERATION_MODE_HT_ONLY  1
 #define IWL_OPERATION_MODE_MIXED    2

trunk/drivers/net/wireless/iwlwifi/iwl-sta.c

@@ -191,20 +191,20 @@ static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
 	if (!sta_ht_inf || !sta_ht_inf->ht_supported)
 		goto done;
 
-	mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2;
+	mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
 
 	sta_flags = priv->stations[index].sta.station_flags;
 
 	sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
 
 	switch (mimo_ps_mode) {
-	case WLAN_HT_CAP_MIMO_PS_STATIC:
+	case WLAN_HT_CAP_SM_PS_STATIC:
 		sta_flags |= STA_FLG_MIMO_DIS_MSK;
 		break;
-	case WLAN_HT_CAP_MIMO_PS_DYNAMIC:
+	case WLAN_HT_CAP_SM_PS_DYNAMIC:
 		sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
 		break;
-	case WLAN_HT_CAP_MIMO_PS_DISABLED:
+	case WLAN_HT_CAP_SM_PS_DISABLED:
 		break;
 	default:
 		IWL_WARNING("Invalid MIMO PS mode %d\n", mimo_ps_mode);

trunk/include/linux/ieee80211.h

@@ -708,7 +708,7 @@ struct ieee80211_ht_addt_info {
 
 /* 802.11n HT capabilities masks */
 #define IEEE80211_HT_CAP_SUP_WIDTH		0x0002
-#define IEEE80211_HT_CAP_MIMO_PS		0x000C
+#define IEEE80211_HT_CAP_SM_PS			0x000C
 #define IEEE80211_HT_CAP_GRN_FLD		0x0010
 #define IEEE80211_HT_CAP_SGI_20			0x0020
 #define IEEE80211_HT_CAP_SGI_40			0x0040
@@ -737,11 +737,11 @@ struct ieee80211_ht_addt_info {
 #define IEEE80211_HT_IE_NON_GF_STA_PRSNT	0x0004
 #define IEEE80211_HT_IE_NON_HT_STA_PRSNT	0x0010
 
-/* MIMO Power Save Modes */
-#define WLAN_HT_CAP_MIMO_PS_STATIC	0
-#define WLAN_HT_CAP_MIMO_PS_DYNAMIC	1
-#define WLAN_HT_CAP_MIMO_PS_INVALID	2
-#define WLAN_HT_CAP_MIMO_PS_DISABLED	3
+/* Spatial Multiplexing Power Save Modes */
+#define WLAN_HT_CAP_SM_PS_STATIC	0
+#define WLAN_HT_CAP_SM_PS_DYNAMIC	1
+#define WLAN_HT_CAP_SM_PS_INVALID	2
+#define WLAN_HT_CAP_SM_PS_DISABLED	3
 
 /* Authentication algorithms */
 #define WLAN_AUTH_OPEN 0

trunk/include/linux/skbuff.h

@@ -146,14 +146,8 @@ struct skb_shared_info {
 	unsigned short	gso_segs;
 	unsigned short  gso_type;
 	__be32          ip6_frag_id;
-#ifdef CONFIG_HAS_DMA
-	unsigned int	num_dma_maps;
-#endif
 	struct sk_buff	*frag_list;
 	skb_frag_t	frags[MAX_SKB_FRAGS];
-#ifdef CONFIG_HAS_DMA
-	dma_addr_t	dma_maps[MAX_SKB_FRAGS + 1];
-#endif
 };
 
 /* We divide dataref into two halves.  The higher 16 bits hold references
@@ -359,14 +353,6 @@ struct sk_buff {
 
 #include <asm/system.h>
 
-#ifdef CONFIG_HAS_DMA
-#include <linux/dma-mapping.h>
-extern int skb_dma_map(struct device *dev, struct sk_buff *skb,
-		       enum dma_data_direction dir);
-extern void skb_dma_unmap(struct device *dev, struct sk_buff *skb,
-			  enum dma_data_direction dir);
-#endif
-
 extern void kfree_skb(struct sk_buff *skb);
 extern void	       __kfree_skb(struct sk_buff *skb);
 extern struct sk_buff *__alloc_skb(unsigned int size,

trunk/net/core/Makefile

@@ -6,7 +6,6 @@ obj-y := sock.o request_sock.o skbuff.o iovec.o datagram.o stream.o scm.o \
 	 gen_stats.o gen_estimator.o net_namespace.o
 
 obj-$(CONFIG_SYSCTL) += sysctl_net_core.o
-obj-$(CONFIG_HAS_DMA) += skb_dma_map.o
 
 obj-y		     += dev.o ethtool.o dev_mcast.o dst.o netevent.o \
 			neighbour.o rtnetlink.o utils.o link_watch.o filter.o