Merge branch 'linus' into sched/urgent

1 files changed, 75 insertions, 47 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c
index 9b50b1052b09..4108c7c8f00f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-tx.c
@@ -208,11 +208,12 @@ EXPORT_SYMBOL(iwl_txq_update_write_ptr);
  * Free all buffers.
  * 0-fill, but do not free "txq" descriptor structure.
  */
-static void iwl_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+static void iwl_tx_queue_free(struct iwl_priv *priv, int txq_id)
 {
+	struct iwl_tx_queue *txq = &priv->txq[txq_id];
 	struct iwl_queue *q = &txq->q;
 	struct pci_dev *dev = priv->pci_dev;
-	int len;
+	int i, slots_num, len;
 
 	if (q->n_bd == 0)
 		return;
@@ -227,7 +228,12 @@ static void iwl_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 		len += IWL_MAX_SCAN_SIZE;
 
 	/* De-alloc array of command/tx buffers */
-	pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
+	slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ?
+			TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
+	for (i = 0; i < slots_num; i++)
+		kfree(txq->cmd[i]);
+	if (txq_id == IWL_CMD_QUEUE_NUM)
+		kfree(txq->cmd[slots_num]);
 
 	/* De-alloc circular buffer of TFDs */
 	if (txq->q.n_bd)
@@ -400,8 +406,7 @@ static int iwl_tx_queue_init(struct iwl_priv *priv,
 			     struct iwl_tx_queue *txq,
 			     int slots_num, u32 txq_id)
 {
-	struct pci_dev *dev = priv->pci_dev;
-	int len;
+	int i, len;
 	int rc = 0;
 
 	/*
@@ -412,17 +417,25 @@ static int iwl_tx_queue_init(struct iwl_priv *priv,
 	 * For normal Tx queues (all other queues), no super-size command
 	 * space is needed.
 	 */
-	len = sizeof(struct iwl_cmd) * slots_num;
-	if (txq_id == IWL_CMD_QUEUE_NUM)
-		len +=  IWL_MAX_SCAN_SIZE;
-	txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
-	if (!txq->cmd)
-		return -ENOMEM;
+	len = sizeof(struct iwl_cmd);
+	for (i = 0; i <= slots_num; i++) {
+		if (i == slots_num) {
+			if (txq_id == IWL_CMD_QUEUE_NUM)
+				len += IWL_MAX_SCAN_SIZE;
+			else
+				continue;
+		}
+
+		txq->cmd[i] = kmalloc(len, GFP_KERNEL | GFP_DMA);
+		if (!txq->cmd[i])
+			return -ENOMEM;
+	}
 
 	/* Alloc driver data array and TFD circular buffer */
 	rc = iwl_tx_queue_alloc(priv, txq, txq_id);
 	if (rc) {
-		pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
+		for (i = 0; i < slots_num; i++)
+			kfree(txq->cmd[i]);
 
 		return -ENOMEM;
 	}
@@ -451,7 +464,7 @@ void iwl_hw_txq_ctx_free(struct iwl_priv *priv)
 
 	/* Tx queues */
 	for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++)
-		iwl_tx_queue_free(priv, &priv->txq[txq_id]);
+		iwl_tx_queue_free(priv, txq_id);
 
 	/* Keep-warm buffer */
 	iwl_kw_free(priv);
@@ -751,20 +764,19 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 	struct iwl_tfd_frame *tfd;
-	u32 *control_flags;
-	int txq_id = skb_get_queue_mapping(skb);
-	struct iwl_tx_queue *txq = NULL;
-	struct iwl_queue *q = NULL;
+	struct iwl_tx_queue *txq;
+	struct iwl_queue *q;
+	struct iwl_cmd *out_cmd;
+	struct iwl_tx_cmd *tx_cmd;
+	int swq_id, txq_id;
 	dma_addr_t phys_addr;
 	dma_addr_t txcmd_phys;
 	dma_addr_t scratch_phys;
-	struct iwl_cmd *out_cmd = NULL;
-	struct iwl_tx_cmd *tx_cmd;
 	u16 len, idx, len_org;
 	u16 seq_number = 0;
-	u8 id, hdr_len, unicast;
-	u8 sta_id;
 	__le16 fc;
+	u8 hdr_len, unicast;
+	u8 sta_id;
 	u8 wait_write_ptr = 0;
 	u8 tid = 0;
 	u8 *qc = NULL;
@@ -789,7 +801,6 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 	}
 
 	unicast = !is_multicast_ether_addr(hdr->addr1);
-	id = 0;
 
 	fc = hdr->frame_control;
 
@@ -827,14 +838,16 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 
 	IWL_DEBUG_TX("station Id %d\n", sta_id);
 
+	swq_id = skb_get_queue_mapping(skb);
+	txq_id = swq_id;
 	if (ieee80211_is_data_qos(fc)) {
 		qc = ieee80211_get_qos_ctl(hdr);
 		tid = qc[0] & 0xf;
-		seq_number = priv->stations[sta_id].tid[tid].seq_number &
-				IEEE80211_SCTL_SEQ;
-		hdr->seq_ctrl = cpu_to_le16(seq_number) |
-			(hdr->seq_ctrl &
-				__constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
+		seq_number = priv->stations[sta_id].tid[tid].seq_number;
+		seq_number &= IEEE80211_SCTL_SEQ;
+		hdr->seq_ctrl = hdr->seq_ctrl &
+				__constant_cpu_to_le16(IEEE80211_SCTL_FRAG);
+		hdr->seq_ctrl |= cpu_to_le16(seq_number);
 		seq_number += 0x10;
 		/* aggregation is on for this <sta,tid> */
 		if (info->flags & IEEE80211_TX_CTL_AMPDU)
@@ -851,7 +864,6 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 	/* Set up first empty TFD within this queue's circular TFD buffer */
 	tfd = &txq->bd[q->write_ptr];
 	memset(tfd, 0, sizeof(*tfd));
-	control_flags = (u32 *) tfd;
 	idx = get_cmd_index(q, q->write_ptr, 0);
 
 	/* Set up driver data for this TFD */
@@ -859,7 +871,7 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 	txq->txb[q->write_ptr].skb[0] = skb;
 
 	/* Set up first empty entry in queue's array of Tx/cmd buffers */
-	out_cmd = &txq->cmd[idx];
+	out_cmd = txq->cmd[idx];
 	tx_cmd = &out_cmd->cmd.tx;
 	memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
 	memset(tx_cmd, 0, sizeof(struct iwl_tx_cmd));
@@ -899,14 +911,15 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 
 	/* Physical address of this Tx command's header (not MAC header!),
 	 * within command buffer array. */
-	txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
-		     offsetof(struct iwl_cmd, hdr);
+	txcmd_phys = pci_map_single(priv->pci_dev, out_cmd,
+				sizeof(struct iwl_cmd), PCI_DMA_TODEVICE);
+	txcmd_phys += offsetof(struct iwl_cmd, hdr);
 
 	/* Add buffer containing Tx command and MAC(!) header to TFD's
 	 * first entry */
 	iwl_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
 
-	if (!(info->flags & IEEE80211_TX_CTL_DO_NOT_ENCRYPT))
+	if (info->control.hw_key)
 		iwl_tx_cmd_build_hwcrypto(priv, info, tx_cmd, skb, sta_id);
 
 	/* Set up TFD's 2nd entry to point directly to remainder of skb,
@@ -962,16 +975,15 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 	if (ret)
 		return ret;
 
-	if ((iwl_queue_space(q) < q->high_mark)
-	    && priv->mac80211_registered) {
+	if ((iwl_queue_space(q) < q->high_mark) && priv->mac80211_registered) {
 		if (wait_write_ptr) {
 			spin_lock_irqsave(&priv->lock, flags);
 			txq->need_update = 1;
 			iwl_txq_update_write_ptr(priv, txq);
 			spin_unlock_irqrestore(&priv->lock, flags);
+		} else {
+			ieee80211_stop_queue(priv->hw, swq_id);
 		}
-
-		ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
 	}
 
 	return 0;
@@ -999,13 +1011,12 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 	struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 	struct iwl_queue *q = &txq->q;
 	struct iwl_tfd_frame *tfd;
-	u32 *control_flags;
 	struct iwl_cmd *out_cmd;
-	u32 idx;
-	u16 fix_size;
 	dma_addr_t phys_addr;
-	int ret;
 	unsigned long flags;
+	int len, ret;
+	u32 idx;
+	u16 fix_size;
 
 	cmd->len = priv->cfg->ops->utils->get_hcmd_size(cmd->id, cmd->len);
 	fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
@@ -1031,10 +1042,9 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 	tfd = &txq->bd[q->write_ptr];
 	memset(tfd, 0, sizeof(*tfd));
 
-	control_flags = (u32 *) tfd;
 
 	idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
-	out_cmd = &txq->cmd[idx];
+	out_cmd = txq->cmd[idx];
 
 	out_cmd->hdr.cmd = cmd->id;
 	memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
@@ -1048,9 +1058,11 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 			INDEX_TO_SEQ(q->write_ptr));
 	if (out_cmd->meta.flags & CMD_SIZE_HUGE)
 		out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
-
-	phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
-			offsetof(struct iwl_cmd, hdr);
+	len = (idx == TFD_CMD_SLOTS) ?
+			IWL_MAX_SCAN_SIZE : sizeof(struct iwl_cmd);
+	phys_addr = pci_map_single(priv->pci_dev, out_cmd, len,
+						PCI_DMA_TODEVICE);
+	phys_addr += offsetof(struct iwl_cmd, hdr);
 	iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
 
 	IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
@@ -1115,6 +1127,9 @@ static void iwl_hcmd_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
 {
 	struct iwl_tx_queue *txq = &priv->txq[txq_id];
 	struct iwl_queue *q = &txq->q;
+	struct iwl_tfd_frame *bd = &txq->bd[index];
+	dma_addr_t dma_addr;
+	int is_odd, buf_len;
 	int nfreed = 0;
 
 	if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
@@ -1132,6 +1147,19 @@ static void iwl_hcmd_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
 					q->write_ptr, q->read_ptr);
 			queue_work(priv->workqueue, &priv->restart);
 		}
+		is_odd = (index/2) & 0x1;
+		if (is_odd) {
+			dma_addr = IWL_GET_BITS(bd->pa[index], tb2_addr_lo16) |
+					(IWL_GET_BITS(bd->pa[index],
+							tb2_addr_hi20) << 16);
+			buf_len = IWL_GET_BITS(bd->pa[index], tb2_len);
+		} else {
+			dma_addr = le32_to_cpu(bd->pa[index].tb1_addr);
+			buf_len = IWL_GET_BITS(bd->pa[index], tb1_len);
+		}
+
+		pci_unmap_single(priv->pci_dev, dma_addr, buf_len,
+				 PCI_DMA_TODEVICE);
 		nfreed++;
 	}
 }
@@ -1163,7 +1191,7 @@ void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
 	BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
 
 	cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
-	cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
+	cmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
 
 	/* Input error checking is done when commands are added to queue. */
 	if (cmd->meta.flags & CMD_WANT_SKB) {
@@ -1391,7 +1419,7 @@ static int iwl_tx_status_reply_compressed_ba(struct iwl_priv *priv,
 	/* For each frame attempted in aggregation,
 	 * update driver's record of tx frame's status. */
 	for (i = 0; i < agg->frame_count ; i++) {
-		ack = bitmap & (1 << i);
+		ack = bitmap & (1ULL << i);
 		successes += !!ack;
 		IWL_DEBUG_TX_REPLY("%s ON i=%d idx=%d raw=%d\n",
 			ack? "ACK":"NACK", i, (agg->start_idx + i) & 0xff,