Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem

23 files changed, 726 insertions, 593 deletions

diff --git a/drivers/net/wireless/iwlwifi/Makefile b/drivers/net/wireless/iwlwifi/Makefile
index 9a56ce546715..19150398a248 100644
--- a/drivers/net/wireless/iwlwifi/Makefile
+++ b/drivers/net/wireless/iwlwifi/Makefile
@@ -14,6 +14,7 @@ iwlagn-objs             += iwl-6000.o
 iwlagn-objs             += iwl-1000.o
 iwlagn-objs             += iwl-2000.o
 iwlagn-objs             += iwl-pci.o
+iwlagn-objs             += iwl-trans.o
 
 iwlagn-$(CONFIG_IWLWIFI_DEBUGFS) += iwl-debugfs.o
 iwlagn-$(CONFIG_IWLWIFI_DEVICE_TRACING) += iwl-devtrace.o
diff --git a/drivers/net/wireless/iwlwifi/iwl-1000.c b/drivers/net/wireless/iwlwifi/iwl-1000.c
index e57fad9f1f09..cf1449df4f0b 100644
--- a/drivers/net/wireless/iwlwifi/iwl-1000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-1000.c
@@ -138,7 +138,6 @@ static int iwl1000_hw_set_hw_params(struct iwl_priv *priv)
 
 	priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 					BIT(IEEE80211_BAND_5GHZ);
-	priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
 
 	priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 	if (priv->cfg->rx_with_siso_diversity)
@@ -197,7 +196,6 @@ static struct iwl_lib_ops iwl1000_lib = {
 
 static const struct iwl_ops iwl1000_ops = {
 	.lib = &iwl1000_lib,
-	.hcmd = &iwlagn_hcmd,
 	.utils = &iwlagn_hcmd_utils,
 };
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-2000.c b/drivers/net/wireless/iwlwifi/iwl-2000.c
index 64ed1f247df0..a401113c065a 100644
--- a/drivers/net/wireless/iwlwifi/iwl-2000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-2000.c
@@ -50,11 +50,13 @@
 #define IWL2030_UCODE_API_MAX 5
 #define IWL2000_UCODE_API_MAX 5
 #define IWL105_UCODE_API_MAX 5
+#define IWL135_UCODE_API_MAX 5
 
 /* Lowest firmware API version supported */
 #define IWL2030_UCODE_API_MIN 5
 #define IWL2000_UCODE_API_MIN 5
 #define IWL105_UCODE_API_MIN 5
+#define IWL135_UCODE_API_MIN 5
 
 #define IWL2030_FW_PRE "iwlwifi-2030-"
 #define IWL2030_MODULE_FIRMWARE(api) IWL2030_FW_PRE __stringify(api) ".ucode"
@@ -65,6 +67,9 @@
 #define IWL105_FW_PRE "iwlwifi-105-"
 #define IWL105_MODULE_FIRMWARE(api) IWL105_FW_PRE __stringify(api) ".ucode"
 
+#define IWL135_FW_PRE "iwlwifi-135-"
+#define IWL135_MODULE_FIRMWARE(api) IWL135_FW_PRE #api ".ucode"
+
 static void iwl2000_set_ct_threshold(struct iwl_priv *priv)
 {
 	/* want Celsius */
@@ -131,7 +136,6 @@ static int iwl2000_hw_set_hw_params(struct iwl_priv *priv)
 
 	priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 					BIT(IEEE80211_BAND_5GHZ);
-	priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
 
 	priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 	if (priv->cfg->rx_with_siso_diversity)
@@ -193,25 +197,21 @@ static struct iwl_lib_ops iwl2000_lib = {
 
 static const struct iwl_ops iwl2000_ops = {
 	.lib = &iwl2000_lib,
-	.hcmd = &iwlagn_hcmd,
 	.utils = &iwlagn_hcmd_utils,
 };
 
 static const struct iwl_ops iwl2030_ops = {
 	.lib = &iwl2000_lib,
-	.hcmd = &iwlagn_bt_hcmd,
 	.utils = &iwlagn_hcmd_utils,
 };
 
 static const struct iwl_ops iwl105_ops = {
 	.lib = &iwl2000_lib,
-	.hcmd = &iwlagn_hcmd,
 	.utils = &iwlagn_hcmd_utils,
 };
 
 static const struct iwl_ops iwl135_ops = {
 	.lib = &iwl2000_lib,
-	.hcmd = &iwlagn_bt_hcmd,
 	.utils = &iwlagn_hcmd_utils,
 };
 
@@ -344,9 +344,9 @@ struct iwl_cfg iwl105_bgn_cfg = {
 };
 
 #define IWL_DEVICE_135						\
-	.fw_name_pre = IWL105_FW_PRE,				\
-	.ucode_api_max = IWL105_UCODE_API_MAX,			\
-	.ucode_api_min = IWL105_UCODE_API_MIN,			\
+	.fw_name_pre = IWL135_FW_PRE,				\
+	.ucode_api_max = IWL135_UCODE_API_MAX,			\
+	.ucode_api_min = IWL135_UCODE_API_MIN,			\
 	.eeprom_ver = EEPROM_2000_EEPROM_VERSION,		\
 	.eeprom_calib_ver = EEPROM_2000_TX_POWER_VERSION,	\
 	.ops = &iwl135_ops,					\
@@ -359,12 +359,12 @@ struct iwl_cfg iwl105_bgn_cfg = {
 	.rx_with_siso_diversity = true				\
 
 struct iwl_cfg iwl135_bg_cfg = {
-	.name = "105 Series 1x1 BG/BT",
+	.name = "135 Series 1x1 BG/BT",
 	IWL_DEVICE_135,
 };
 
 struct iwl_cfg iwl135_bgn_cfg = {
-	.name = "105 Series 1x1 BGN/BT",
+	.name = "135 Series 1x1 BGN/BT",
 	IWL_DEVICE_135,
 	.ht_params = &iwl2000_ht_params,
 };
@@ -372,3 +372,4 @@ struct iwl_cfg iwl135_bgn_cfg = {
 MODULE_FIRMWARE(IWL2000_MODULE_FIRMWARE(IWL2000_UCODE_API_MAX));
 MODULE_FIRMWARE(IWL2030_MODULE_FIRMWARE(IWL2030_UCODE_API_MAX));
 MODULE_FIRMWARE(IWL105_MODULE_FIRMWARE(IWL105_UCODE_API_MAX));
+MODULE_FIRMWARE(IWL135_MODULE_FIRMWARE(IWL135_UCODE_API_MAX));
diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c
index 269dfdb9fe1a..c55cec853f50 100644
--- a/drivers/net/wireless/iwlwifi/iwl-5000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-5000.c
@@ -169,7 +169,6 @@ static int iwl5000_hw_set_hw_params(struct iwl_priv *priv)
 
 	priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 					BIT(IEEE80211_BAND_5GHZ);
-	priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
 
 	priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 	priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
@@ -214,7 +213,6 @@ static int iwl5150_hw_set_hw_params(struct iwl_priv *priv)
 
 	priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 					BIT(IEEE80211_BAND_5GHZ);
-	priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
 
 	priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 	priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
@@ -379,13 +377,11 @@ static struct iwl_lib_ops iwl5150_lib = {
 
 static const struct iwl_ops iwl5000_ops = {
 	.lib = &iwl5000_lib,
-	.hcmd = &iwlagn_hcmd,
 	.utils = &iwlagn_hcmd_utils,
 };
 
 static const struct iwl_ops iwl5150_ops = {
 	.lib = &iwl5150_lib,
-	.hcmd = &iwlagn_hcmd,
 	.utils = &iwlagn_hcmd_utils,
 };
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-6000.c b/drivers/net/wireless/iwlwifi/iwl-6000.c
index f1c1db76b9da..965d010794b4 100644
--- a/drivers/net/wireless/iwlwifi/iwl-6000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-6000.c
@@ -157,7 +157,6 @@ static int iwl6000_hw_set_hw_params(struct iwl_priv *priv)
 
 	priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 					BIT(IEEE80211_BAND_5GHZ);
-	priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
 
 	priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 	if (priv->cfg->rx_with_siso_diversity)
@@ -328,27 +327,23 @@ static struct iwl_nic_ops iwl6150_nic_ops = {
 
 static const struct iwl_ops iwl6000_ops = {
 	.lib = &iwl6000_lib,
-	.hcmd = &iwlagn_hcmd,
 	.utils = &iwlagn_hcmd_utils,
 };
 
 static const struct iwl_ops iwl6050_ops = {
 	.lib = &iwl6000_lib,
-	.hcmd = &iwlagn_hcmd,
 	.utils = &iwlagn_hcmd_utils,
 	.nic = &iwl6050_nic_ops,
 };
 
 static const struct iwl_ops iwl6150_ops = {
 	.lib = &iwl6000_lib,
-	.hcmd = &iwlagn_hcmd,
 	.utils = &iwlagn_hcmd_utils,
 	.nic = &iwl6150_nic_ops,
 };
 
 static const struct iwl_ops iwl6030_ops = {
 	.lib = &iwl6030_lib,
-	.hcmd = &iwlagn_bt_hcmd,
 	.utils = &iwlagn_hcmd_utils,
 };
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-hcmd.c b/drivers/net/wireless/iwlwifi/iwl-agn-hcmd.c
index ba7ed9157c92..ce7d4b56d9b2 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-hcmd.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-hcmd.c
@@ -205,7 +205,7 @@ static int iwlagn_calc_rssi(struct iwl_priv *priv,
 	return max_rssi - agc - IWLAGN_RSSI_OFFSET;
 }
 
-static int iwlagn_set_pan_params(struct iwl_priv *priv)
+int iwlagn_set_pan_params(struct iwl_priv *priv)
 {
 	struct iwl_wipan_params_cmd cmd;
 	struct iwl_rxon_context *ctx_bss, *ctx_pan;
@@ -297,20 +297,6 @@ static int iwlagn_set_pan_params(struct iwl_priv *priv)
 	return ret;
 }
 
-struct iwl_hcmd_ops iwlagn_hcmd = {
-	.set_rxon_chain = iwlagn_set_rxon_chain,
-	.set_tx_ant = iwlagn_send_tx_ant_config,
-	.send_bt_config = iwl_send_bt_config,
-	.set_pan_params = iwlagn_set_pan_params,
-};
-
-struct iwl_hcmd_ops iwlagn_bt_hcmd = {
-	.set_rxon_chain = iwlagn_set_rxon_chain,
-	.set_tx_ant = iwlagn_send_tx_ant_config,
-	.send_bt_config = iwlagn_send_advance_bt_config,
-	.set_pan_params = iwlagn_set_pan_params,
-};
-
 struct iwl_hcmd_utils_ops iwlagn_hcmd_utils = {
 	.build_addsta_hcmd = iwlagn_build_addsta_hcmd,
 	.gain_computation = iwlagn_gain_computation,
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index efdab6506ae7..90d366e15d2f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -628,38 +628,6 @@ struct iwl_mod_params iwlagn_mod_params = {
 	/* the rest are 0 by default */
 };
 
-void iwlagn_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
-{
-	unsigned long flags;
-	int i;
-	spin_lock_irqsave(&rxq->lock, flags);
-	INIT_LIST_HEAD(&rxq->rx_free);
-	INIT_LIST_HEAD(&rxq->rx_used);
-	/* Fill the rx_used queue with _all_ of the Rx buffers */
-	for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
-		/* In the reset function, these buffers may have been allocated
-		 * to an SKB, so we need to unmap and free potential storage */
-		if (rxq->pool[i].page != NULL) {
-			dma_unmap_page(priv->bus.dev, rxq->pool[i].page_dma,
-				PAGE_SIZE << priv->hw_params.rx_page_order,
-				DMA_FROM_DEVICE);
-			__iwl_free_pages(priv, rxq->pool[i].page);
-			rxq->pool[i].page = NULL;
-		}
-		list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
-	}
-
-	for (i = 0; i < RX_QUEUE_SIZE; i++)
-		rxq->queue[i] = NULL;
-
-	/* Set us so that we have processed and used all buffers, but have
-	 * not restocked the Rx queue with fresh buffers */
-	rxq->read = rxq->write = 0;
-	rxq->write_actual = 0;
-	rxq->free_count = 0;
-	spin_unlock_irqrestore(&rxq->lock, flags);
-}
-
 int iwlagn_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
 {
 	u32 rb_size;
@@ -731,7 +699,6 @@ int iwlagn_hw_nic_init(struct iwl_priv *priv)
 {
 	unsigned long flags;
 	struct iwl_rx_queue *rxq = &priv->rxq;
-	int ret;
 
 	/* nic_init */
 	spin_lock_irqsave(&priv->lock, flags);
@@ -747,14 +714,7 @@ int iwlagn_hw_nic_init(struct iwl_priv *priv)
 	priv->cfg->ops->lib->apm_ops.config(priv);
 
 	/* Allocate the RX queue, or reset if it is already allocated */
-	if (!rxq->bd) {
-		ret = iwl_rx_queue_alloc(priv);
-		if (ret) {
-			IWL_ERR(priv, "Unable to initialize Rx queue\n");
-			return -ENOMEM;
-		}
-	} else
-		iwlagn_rx_queue_reset(priv, rxq);
+	priv->trans.ops->rx_init(priv);
 
 	iwlagn_rx_replenish(priv);
 
@@ -768,12 +728,8 @@ int iwlagn_hw_nic_init(struct iwl_priv *priv)
 	spin_unlock_irqrestore(&priv->lock, flags);
 
 	/* Allocate or reset and init all Tx and Command queues */
-	if (!priv->txq) {
-		ret = iwlagn_txq_ctx_alloc(priv);
-		if (ret)
-			return ret;
-	} else
-		iwlagn_txq_ctx_reset(priv);
+	if (priv->trans.ops->tx_init(priv))
+		return -ENOMEM;
 
 	if (priv->cfg->base_params->shadow_reg_enable) {
 		/* enable shadow regs in HW */
@@ -949,33 +905,6 @@ void iwlagn_rx_replenish_now(struct iwl_priv *priv)
 	iwlagn_rx_queue_restock(priv);
 }
 
-/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
- * If an SKB has been detached, the POOL needs to have its SKB set to NULL
- * This free routine walks the list of POOL entries and if SKB is set to
- * non NULL it is unmapped and freed
- */
-void iwlagn_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
-{
-	int i;
-	for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
-		if (rxq->pool[i].page != NULL) {
-			dma_unmap_page(priv->bus.dev, rxq->pool[i].page_dma,
-				PAGE_SIZE << priv->hw_params.rx_page_order,
-				DMA_FROM_DEVICE);
-			__iwl_free_pages(priv, rxq->pool[i].page);
-			rxq->pool[i].page = NULL;
-		}
-	}
-
-	dma_free_coherent(priv->bus.dev, 4 * RX_QUEUE_SIZE,
-			  rxq->bd, rxq->bd_dma);
-	dma_free_coherent(priv->bus.dev,
-			  sizeof(struct iwl_rb_status),
-			  rxq->rb_stts, rxq->rb_stts_dma);
-	rxq->bd = NULL;
-	rxq->rb_stts  = NULL;
-}
-
 int iwlagn_rxq_stop(struct iwl_priv *priv)
 {
 
@@ -1437,17 +1366,14 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
 	/* set scan bit here for PAN params */
 	set_bit(STATUS_SCAN_HW, &priv->status);
 
-	if (priv->cfg->ops->hcmd->set_pan_params) {
-		ret = priv->cfg->ops->hcmd->set_pan_params(priv);
-		if (ret)
-			return ret;
-	}
+	ret = iwlagn_set_pan_params(priv);
+	if (ret)
+		return ret;
 
 	ret = iwl_send_cmd_sync(priv, &cmd);
 	if (ret) {
 		clear_bit(STATUS_SCAN_HW, &priv->status);
-		if (priv->cfg->ops->hcmd->set_pan_params)
-			priv->cfg->ops->hcmd->set_pan_params(priv);
+		iwlagn_set_pan_params(priv);
 	}
 
 	return ret;
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
index 8fa43d427811..c6bb73a66d9f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
@@ -436,11 +436,9 @@ int iwlagn_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 	if (ret)
 		return ret;
 
-	if (priv->cfg->ops->hcmd->set_pan_params) {
-		ret = priv->cfg->ops->hcmd->set_pan_params(priv);
-		if (ret)
-			return ret;
-	}
+	ret = iwlagn_set_pan_params(priv);
+	if (ret)
+		return ret;
 
 	if (new_assoc)
 		return iwlagn_rxon_connect(priv, ctx);
@@ -483,9 +481,8 @@ int iwlagn_mac_config(struct ieee80211_hw *hw, u32 changed)
 		 * set up the SM PS mode to OFF if an HT channel is
 		 * configured.
 		 */
-		if (priv->cfg->ops->hcmd->set_rxon_chain)
-			for_each_context(priv, ctx)
-				priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
+		for_each_context(priv, ctx)
+			iwlagn_set_rxon_chain(priv, ctx);
 	}
 
 	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
@@ -741,8 +738,7 @@ void iwlagn_bss_info_changed(struct ieee80211_hw *hw,
 		iwl_set_rxon_ht(priv, &priv->current_ht_config);
 	}
 
-	if (priv->cfg->ops->hcmd->set_rxon_chain)
-		priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
+	iwlagn_set_rxon_chain(priv, ctx);
 
 	if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
 		ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK;
@@ -821,6 +817,5 @@ void iwlagn_post_scan(struct iwl_priv *priv)
 		if (memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
 			iwlagn_commit_rxon(priv, ctx);
 
-	if (priv->cfg->ops->hcmd->set_pan_params)
-		priv->cfg->ops->hcmd->set_pan_params(priv);
+	iwlagn_set_pan_params(priv);
 }
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
index d0ac090399e9..c05a8d9fbd2e 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
@@ -878,96 +878,6 @@ void iwlagn_hw_txq_ctx_free(struct iwl_priv *priv)
 }
 
 /**
- * iwlagn_txq_ctx_alloc - allocate TX queue context
- * Allocate all Tx DMA structures and initialize them
- *
- * @param priv
- * @return error code
- */
-int iwlagn_txq_ctx_alloc(struct iwl_priv *priv)
-{
-	int ret;
-	int txq_id, slots_num;
-	unsigned long flags;
-
-	/* Free all tx/cmd queues and keep-warm buffer */
-	iwlagn_hw_txq_ctx_free(priv);
-
-	ret = iwlagn_alloc_dma_ptr(priv, &priv->scd_bc_tbls,
-				priv->hw_params.scd_bc_tbls_size);
-	if (ret) {
-		IWL_ERR(priv, "Scheduler BC Table allocation failed\n");
-		goto error_bc_tbls;
-	}
-	/* Alloc keep-warm buffer */
-	ret = iwlagn_alloc_dma_ptr(priv, &priv->kw, IWL_KW_SIZE);
-	if (ret) {
-		IWL_ERR(priv, "Keep Warm allocation failed\n");
-		goto error_kw;
-	}
-
-	/* allocate tx queue structure */
-	ret = iwl_alloc_txq_mem(priv);
-	if (ret)
-		goto error;
-
-	spin_lock_irqsave(&priv->lock, flags);
-
-	/* Turn off all Tx DMA fifos */
-	iwlagn_txq_set_sched(priv, 0);
-
-	/* Tell NIC where to find the "keep warm" buffer */
-	iwl_write_direct32(priv, FH_KW_MEM_ADDR_REG, priv->kw.dma >> 4);
-
-	spin_unlock_irqrestore(&priv->lock, flags);
-
-	/* Alloc and init all Tx queues, including the command queue (#4/#9) */
-	for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
-		slots_num = (txq_id == priv->cmd_queue) ?
-					TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
-		ret = iwl_tx_queue_init(priv, &priv->txq[txq_id], slots_num,
-				       txq_id);
-		if (ret) {
-			IWL_ERR(priv, "Tx %d queue init failed\n", txq_id);
-			goto error;
-		}
-	}
-
-	return ret;
-
- error:
-	iwlagn_hw_txq_ctx_free(priv);
-	iwlagn_free_dma_ptr(priv, &priv->kw);
- error_kw:
-	iwlagn_free_dma_ptr(priv, &priv->scd_bc_tbls);
- error_bc_tbls:
-	return ret;
-}
-
-void iwlagn_txq_ctx_reset(struct iwl_priv *priv)
-{
-	int txq_id, slots_num;
-	unsigned long flags;
-
-	spin_lock_irqsave(&priv->lock, flags);
-
-	/* Turn off all Tx DMA fifos */
-	iwlagn_txq_set_sched(priv, 0);
-
-	/* Tell NIC where to find the "keep warm" buffer */
-	iwl_write_direct32(priv, FH_KW_MEM_ADDR_REG, priv->kw.dma >> 4);
-
-	spin_unlock_irqrestore(&priv->lock, flags);
-
-	/* Alloc and init all Tx queues, including the command queue (#4) */
-	for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
-		slots_num = txq_id == priv->cmd_queue ?
-			    TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
-		iwl_tx_queue_reset(priv, &priv->txq[txq_id], slots_num, txq_id);
-	}
-}
-
-/**
  * iwlagn_txq_ctx_stop - Stop all Tx DMA channels
  */
 void iwlagn_txq_ctx_stop(struct iwl_priv *priv)
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c b/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c
index de8277e32253..2043c8b3139b 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-ucode.c
@@ -386,11 +386,13 @@ static int iwlagn_alive_notify(struct iwl_priv *priv)
 	spin_lock_irqsave(&priv->lock, flags);
 
 	priv->scd_base_addr = iwl_read_prph(priv, IWLAGN_SCD_SRAM_BASE_ADDR);
-	a = priv->scd_base_addr + IWLAGN_SCD_CONTEXT_DATA_OFFSET;
-	for (; a < priv->scd_base_addr + IWLAGN_SCD_TX_STTS_BITMAP_OFFSET;
+	a = priv->scd_base_addr + IWLAGN_SCD_CONTEXT_MEM_LOWER_BOUND;
+	/* reset conext data memory */
+	for (; a < priv->scd_base_addr + IWLAGN_SCD_CONTEXT_MEM_UPPER_BOUND;
 		a += 4)
 		iwl_write_targ_mem(priv, a, 0);
-	for (; a < priv->scd_base_addr + IWLAGN_SCD_TRANSLATE_TBL_OFFSET;
+	/* reset tx status memory */
+	for (; a < priv->scd_base_addr + IWLAGN_SCD_TX_STTS_MEM_UPPER_BOUND;
 		a += 4)
 		iwl_write_targ_mem(priv, a, 0);
 	for (; a < priv->scd_base_addr +
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index e2f6b2ab0d45..7e6c463abbdf 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -56,7 +56,7 @@
 #include "iwl-agn-calib.h"
 #include "iwl-agn.h"
 #include "iwl-pci.h"
-
+#include "iwl-trans.h"
 
 /******************************************************************************
  *
@@ -90,12 +90,10 @@ void iwl_update_chain_flags(struct iwl_priv *priv)
 {
 	struct iwl_rxon_context *ctx;
 
-	if (priv->cfg->ops->hcmd->set_rxon_chain) {
-		for_each_context(priv, ctx) {
-			priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
-			if (ctx->active.rx_chain != ctx->staging.rx_chain)
-				iwlagn_commit_rxon(priv, ctx);
-		}
+	for_each_context(priv, ctx) {
+		iwlagn_set_rxon_chain(priv, ctx);
+		if (ctx->active.rx_chain != ctx->staging.rx_chain)
+			iwlagn_commit_rxon(priv, ctx);
 	}
 }
 
@@ -260,7 +258,7 @@ static void iwl_bg_bt_runtime_config(struct work_struct *work)
 	/* dont send host command if rf-kill is on */
 	if (!iwl_is_ready_rf(priv))
 		return;
-	priv->cfg->ops->hcmd->send_bt_config(priv);
+	iwlagn_send_advance_bt_config(priv);
 }
 
 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
@@ -287,12 +285,11 @@ static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 	 * to avoid 3-wire collisions
 	 */
 	for_each_context(priv, ctx) {
-		if (priv->cfg->ops->hcmd->set_rxon_chain)
-			priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
+		iwlagn_set_rxon_chain(priv, ctx);
 		iwlagn_commit_rxon(priv, ctx);
 	}
 
-	priv->cfg->ops->hcmd->send_bt_config(priv);
+	iwlagn_send_advance_bt_config(priv);
 out:
 	mutex_unlock(&priv->mutex);
 }
@@ -2017,7 +2014,7 @@ int iwl_alive_start(struct iwl_priv *priv)
 		priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
 		priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
 		priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
-		priv->cfg->ops->hcmd->send_bt_config(priv);
+		iwlagn_send_advance_bt_config(priv);
 		priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
 		iwlagn_send_prio_tbl(priv);
 
@@ -2030,7 +2027,13 @@ int iwl_alive_start(struct iwl_priv *priv)
 					 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 		if (ret)
 			return ret;
+	} else {
+		/*
+		 * default is 2-wire BT coexexistence support
+		 */
+		iwl_send_bt_config(priv);
 	}
+
 	if (priv->hw_params.calib_rt_cfg)
 		iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);
 
@@ -2039,8 +2042,7 @@ int iwl_alive_start(struct iwl_priv *priv)
 	priv->active_rate = IWL_RATES_MASK;
 
 	/* Configure Tx antenna selection based on H/W config */
-	if (priv->cfg->ops->hcmd->set_tx_ant)
-		priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
+	iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
 
 	if (iwl_is_associated_ctx(ctx)) {
 		struct iwl_rxon_cmd *active_rxon =
@@ -2054,16 +2056,7 @@ int iwl_alive_start(struct iwl_priv *priv)
 		for_each_context(priv, tmp)
 			iwl_connection_init_rx_config(priv, tmp);
 
-		if (priv->cfg->ops->hcmd->set_rxon_chain)
-			priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
-	}
-
-	if (!priv->cfg->bt_params || (priv->cfg->bt_params &&
-	    !priv->cfg->bt_params->advanced_bt_coexist)) {
-		/*
-		 * default is 2-wire BT coexexistence support
-		 */
-		priv->cfg->ops->hcmd->send_bt_config(priv);
+		iwlagn_set_rxon_chain(priv, ctx);
 	}
 
 	iwl_reset_run_time_calib(priv);
@@ -3288,9 +3281,7 @@ static int iwl_init_drv(struct iwl_priv *priv)
 	priv->rx_statistics_jiffies = jiffies;
 
 	/* Choose which receivers/antennas to use */
-	if (priv->cfg->ops->hcmd->set_rxon_chain)
-		priv->cfg->ops->hcmd->set_rxon_chain(priv,
-					&priv->contexts[IWL_RXON_CTX_BSS]);
+	iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
 
 	iwl_init_scan_params(priv);
 
@@ -3517,6 +3508,8 @@ int iwl_probe(void *bus_specific, struct iwl_bus_ops *bus_ops,
 	priv->bus.ops->set_drv_data(&priv->bus, priv);
 	priv->bus.dev = priv->bus.ops->get_dev(&priv->bus);
 
+	iwl_trans_register(&priv->trans);
+
 	/* At this point both hw and priv are allocated. */
 
 	SET_IEEE80211_DEV(hw, priv->bus.dev);
@@ -3716,8 +3709,7 @@ void __devexit iwl_remove(struct iwl_priv * priv)
 
 	iwl_dealloc_ucode(priv);
 
-	if (priv->rxq.bd)
-		iwlagn_rx_queue_free(priv, &priv->rxq);
+	priv->trans.ops->rx_free(priv);
 	iwlagn_hw_txq_ctx_free(priv);
 
 	iwl_eeprom_free(priv);
@@ -3820,6 +3812,10 @@ MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
 
+module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
+MODULE_PARM_DESC(wd_disable,
+		"Disable stuck queue watchdog timer (default: 0 [enabled])");
+
 /*
  * set bt_coex_active to true, uCode will do kill/defer
  * every time the priority line is asserted (BT is sending signals on the
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.h b/drivers/net/wireless/iwlwifi/iwl-agn.h
index dcdf2259520f..4351151e2a91 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.h
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.h
@@ -182,7 +182,6 @@ void iwlagn_temperature(struct iwl_priv *priv);
 u16 iwlagn_eeprom_calib_version(struct iwl_priv *priv);
 const u8 *iwlagn_eeprom_query_addr(const struct iwl_priv *priv,
 				   size_t offset);
-void iwlagn_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 int iwlagn_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 int iwlagn_hw_nic_init(struct iwl_priv *priv);
 int iwlagn_wait_tx_queue_empty(struct iwl_priv *priv);
@@ -194,7 +193,6 @@ void iwlagn_rx_queue_restock(struct iwl_priv *priv);
 void iwlagn_rx_allocate(struct iwl_priv *priv, gfp_t priority);
 void iwlagn_rx_replenish(struct iwl_priv *priv);
 void iwlagn_rx_replenish_now(struct iwl_priv *priv);
-void iwlagn_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 int iwlagn_rxq_stop(struct iwl_priv *priv);
 int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band);
 void iwl_setup_rx_handlers(struct iwl_priv *priv);
@@ -220,8 +218,6 @@ void iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv,
 				struct iwl_rx_mem_buffer *rxb);
 int iwlagn_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index);
 void iwlagn_hw_txq_ctx_free(struct iwl_priv *priv);
-int iwlagn_txq_ctx_alloc(struct iwl_priv *priv);
-void iwlagn_txq_ctx_reset(struct iwl_priv *priv);
 void iwlagn_txq_ctx_stop(struct iwl_priv *priv);
 
 static inline u32 iwl_tx_status_to_mac80211(u32 status)
@@ -260,6 +256,7 @@ int iwlagn_manage_ibss_station(struct iwl_priv *priv,
 /* hcmd */
 int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant);
 int iwlagn_send_beacon_cmd(struct iwl_priv *priv);
+int iwlagn_set_pan_params(struct iwl_priv *priv);
 
 /* bt coex */
 void iwlagn_send_advance_bt_config(struct iwl_priv *priv);
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index 7f16d1203057..f91e306c2498 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -585,8 +585,7 @@ static void _iwl_set_rxon_ht(struct iwl_priv *priv,
 		rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
 	}
 
-	if (priv->cfg->ops->hcmd->set_rxon_chain)
-		priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
+	iwlagn_set_rxon_chain(priv, ctx);
 
 	IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
 			"extension channel offset 0x%x\n",
@@ -1216,8 +1215,7 @@ static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 {
 	iwl_connection_init_rx_config(priv, ctx);
 
-	if (priv->cfg->ops->hcmd->set_rxon_chain)
-		priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
+	iwlagn_set_rxon_chain(priv, ctx);
 
 	return iwlagn_commit_rxon(priv, ctx);
 }
@@ -1372,20 +1370,6 @@ void iwl_mac_remove_interface(struct ieee80211_hw *hw,
 
 }
 
-int iwl_alloc_txq_mem(struct iwl_priv *priv)
-{
-	if (!priv->txq)
-		priv->txq = kzalloc(
-			sizeof(struct iwl_tx_queue) *
-				priv->cfg->base_params->num_of_queues,
-			GFP_KERNEL);
-	if (!priv->txq) {
-		IWL_ERR(priv, "Not enough memory for txq\n");
-		return -ENOMEM;
-	}
-	return 0;
-}
-
 void iwl_free_txq_mem(struct iwl_priv *priv)
 {
 	kfree(priv->txq);
@@ -1853,7 +1837,7 @@ void iwl_setup_watchdog(struct iwl_priv *priv)
 {
 	unsigned int timeout = priv->cfg->base_params->wd_timeout;
 
-	if (timeout)
+	if (timeout && !iwlagn_mod_params.wd_disable)
 		mod_timer(&priv->watchdog,
 			  jiffies + msecs_to_jiffies(IWL_WD_TICK(timeout)));
 	else
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h
index f881678be762..6c21de9f5b60 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.h
+++ b/drivers/net/wireless/iwlwifi/iwl-core.h
@@ -80,14 +80,6 @@ struct iwl_cmd;
 
 #define IWL_CMD(x) case x: return #x
 
-struct iwl_hcmd_ops {
-	void (*set_rxon_chain)(struct iwl_priv *priv,
-			       struct iwl_rxon_context *ctx);
-	int (*set_tx_ant)(struct iwl_priv *priv, u8 valid_tx_ant);
-	void (*send_bt_config)(struct iwl_priv *priv);
-	int (*set_pan_params)(struct iwl_priv *priv);
-};
-
 struct iwl_hcmd_utils_ops {
 	u16 (*build_addsta_hcmd)(const struct iwl_addsta_cmd *cmd, u8 *data);
 	void (*gain_computation)(struct iwl_priv *priv,
@@ -146,7 +138,6 @@ struct iwl_nic_ops {
 
 struct iwl_ops {
 	const struct iwl_lib_ops *lib;
-	const struct iwl_hcmd_ops *hcmd;
 	const struct iwl_hcmd_utils_ops *utils;
 	const struct iwl_nic_ops *nic;
 };
@@ -160,6 +151,7 @@ struct iwl_mod_params {
 	int restart_fw;		/* def: 1 = restart firmware */
 	bool plcp_check;	/* def: true = enable plcp health check */
 	bool ack_check;		/* def: false = disable ack health check */
+	bool wd_disable;	/* def: false = enable stuck queue check */
 	bool bt_coex_active;	/* def: true = enable bt coex */
 	int led_mode;		/* def: 0 = system default */
 	bool no_sleep_autoadjust; /* def: true = disable autoadjust */
@@ -336,7 +328,6 @@ void iwl_mac_remove_interface(struct ieee80211_hw *hw,
 int iwl_mac_change_interface(struct ieee80211_hw *hw,
 			     struct ieee80211_vif *vif,
 			     enum nl80211_iftype newtype, bool newp2p);
-int iwl_alloc_txq_mem(struct iwl_priv *priv);
 void iwl_free_txq_mem(struct iwl_priv *priv);
 
 #ifdef CONFIG_IWLWIFI_DEBUGFS
@@ -382,7 +373,6 @@ static inline void iwl_update_stats(struct iwl_priv *priv, bool is_tx,
 ******************************************************/
 void iwl_cmd_queue_free(struct iwl_priv *priv);
 void iwl_cmd_queue_unmap(struct iwl_priv *priv);
-int iwl_rx_queue_alloc(struct iwl_priv *priv);
 void iwl_rx_queue_update_write_ptr(struct iwl_priv *priv,
 				  struct iwl_rx_queue *q);
 int iwl_rx_queue_space(const struct iwl_rx_queue *q);
@@ -396,11 +386,9 @@ void iwl_chswitch_done(struct iwl_priv *priv, bool is_success);
 * TX
 ******************************************************/
 void iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq);
-int iwl_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq,
-		      int slots_num, u32 txq_id);
-void iwl_tx_queue_reset(struct iwl_priv *priv, struct iwl_tx_queue *txq,
-			int slots_num, u32 txq_id);
 void iwl_tx_queue_free(struct iwl_priv *priv, int txq_id);
+int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
+			  int count, int slots_num, u32 id);
 void iwl_tx_queue_unmap(struct iwl_priv *priv, int txq_id);
 void iwl_setup_watchdog(struct iwl_priv *priv);
 /*****************************************************
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index f1b1128ee1c4..c6560e97a62b 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -666,7 +666,6 @@ struct iwl_hw_params {
 	u16 max_rxq_size;
 	u16 max_rxq_log;
 	u32 rx_page_order;
-	u32 rx_wrt_ptr_reg;
 	u8  max_stations;
 	u8  ht40_channel;
 	u8  max_beacon_itrvl;	/* in 1024 ms */
@@ -1228,6 +1227,25 @@ struct iwl_bus {
 	unsigned int irq;
 };
 
+struct iwl_trans;
+
+/**
+ * struct iwl_trans_ops - transport specific operations
+
+ * @rx_init: inits the rx memory, allocate it if needed
+ * @rx_free: frees the rx memory
+ * @tx_init:inits the tx memory, allocate if needed
+ */
+struct iwl_trans_ops {
+	int (*rx_init)(struct iwl_priv *priv);
+	void (*rx_free)(struct iwl_priv *priv);
+	int (*tx_init)(struct iwl_priv *priv);
+};
+
+struct iwl_trans {
+	const struct iwl_trans_ops *ops;
+};
+
 struct iwl_priv {
 
 	/* ieee device used by generic ieee processing code */
@@ -1296,13 +1314,13 @@ struct iwl_priv {
 	struct mutex mutex;
 
 	struct iwl_bus bus;	/* bus specific data */
+	struct iwl_trans trans;
 
 	/* microcode/device supports multiple contexts */
 	u8 valid_contexts;
 
 	/* command queue number */
 	u8 cmd_queue;
-	u8 last_sync_cmd_id;
 
 	/* max number of station keys */
 	u8 sta_key_max_num;
diff --git a/drivers/net/wireless/iwlwifi/iwl-hcmd.c b/drivers/net/wireless/iwlwifi/iwl-hcmd.c
index e3e5fb614178..107b38e2ee93 100644
--- a/drivers/net/wireless/iwlwifi/iwl-hcmd.c
+++ b/drivers/net/wireless/iwlwifi/iwl-hcmd.c
@@ -171,6 +171,8 @@ int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 	int cmd_idx;
 	int ret;
 
+	lockdep_assert_held(&priv->mutex);
+
 	if (WARN_ON(cmd->flags & CMD_ASYNC))
 		return -EINVAL;
 
@@ -181,16 +183,7 @@ int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 	IWL_DEBUG_INFO(priv, "Attempting to send sync command %s\n",
 			get_cmd_string(cmd->id));
 
-	if (test_and_set_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
-		IWL_ERR(priv, "STATUS_HCMD_ACTIVE already set while sending %s"
-			      ". Previous SYNC cmdn is %s\n",
-			get_cmd_string(cmd->id),
-			get_cmd_string(priv->last_sync_cmd_id));
-		WARN_ON(1);
-	} else {
-		priv->last_sync_cmd_id = cmd->id;
-	}
-
+	set_bit(STATUS_HCMD_ACTIVE, &priv->status);
 	IWL_DEBUG_INFO(priv, "Setting HCMD_ACTIVE for command %s\n",
 			get_cmd_string(cmd->id));
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-pci.c b/drivers/net/wireless/iwlwifi/iwl-pci.c
index 3b5844b60e7c..74911348a2ee 100644
--- a/drivers/net/wireless/iwlwifi/iwl-pci.c
+++ b/drivers/net/wireless/iwlwifi/iwl-pci.c
@@ -67,6 +67,7 @@
 #include "iwl-agn.h"
 #include "iwl-core.h"
 #include "iwl-io.h"
+#include "iwl-trans.h"
 
 /* PCI registers */
 #define PCI_CFG_RETRY_TIMEOUT	0x041
@@ -93,7 +94,7 @@ static u16 iwl_pciexp_link_ctrl(struct iwl_bus *bus)
 	u16 pci_lnk_ctl;
 	struct pci_dev *pci_dev = IWL_BUS_GET_PCI_DEV(bus);
 
-	pos = pci_find_capability(pci_dev, PCI_CAP_ID_EXP);
+	pos = pci_pcie_cap(pci_dev);
 	pci_read_config_word(pci_dev, pos + PCI_EXP_LNKCTL, &pci_lnk_ctl);
 	return pci_lnk_ctl;
 }
diff --git a/drivers/net/wireless/iwlwifi/iwl-prph.h b/drivers/net/wireless/iwlwifi/iwl-prph.h
index f00d188b2cfc..1cc0ed1f488c 100644
--- a/drivers/net/wireless/iwlwifi/iwl-prph.h
+++ b/drivers/net/wireless/iwlwifi/iwl-prph.h
@@ -168,6 +168,7 @@
  * the scheduler (especially for queue #4/#9, the command queue, otherwise
  * the driver can't issue commands!):
  */
+#define SCD_MEM_LOWER_BOUND		(0x0000)
 
 /**
  * Max Tx window size is the max number of contiguous TFDs that the scheduler
@@ -197,15 +198,23 @@
 #define IWLAGN_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS	(16)
 #define IWLAGN_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK	(0x007F0000)
 
-#define IWLAGN_SCD_CONTEXT_DATA_OFFSET		(0x600)
-#define IWLAGN_SCD_TX_STTS_BITMAP_OFFSET		(0x7B1)
-#define IWLAGN_SCD_TRANSLATE_TBL_OFFSET		(0x7E0)
+/* Context Data */
+#define IWLAGN_SCD_CONTEXT_MEM_LOWER_BOUND	(SCD_MEM_LOWER_BOUND + 0x600)
+#define IWLAGN_SCD_CONTEXT_MEM_UPPER_BOUND	(SCD_MEM_LOWER_BOUND + 0x6A0)
+
+/* Tx status */
+#define IWLAGN_SCD_TX_STTS_MEM_LOWER_BOUND	(SCD_MEM_LOWER_BOUND + 0x6A0)
+#define IWLAGN_SCD_TX_STTS_MEM_UPPER_BOUND	(SCD_MEM_LOWER_BOUND + 0x7E0)
+
+/* Translation Data */
+#define IWLAGN_SCD_TRANS_TBL_MEM_LOWER_BOUND	(SCD_MEM_LOWER_BOUND + 0x7E0)
+#define IWLAGN_SCD_TRANS_TBL_MEM_UPPER_BOUND	(SCD_MEM_LOWER_BOUND + 0x808)
 
 #define IWLAGN_SCD_CONTEXT_QUEUE_OFFSET(x)\
-	(IWLAGN_SCD_CONTEXT_DATA_OFFSET + ((x) * 8))
+	(IWLAGN_SCD_CONTEXT_MEM_LOWER_BOUND + ((x) * 8))
 
 #define IWLAGN_SCD_TRANSLATE_TBL_OFFSET_QUEUE(x) \
-	((IWLAGN_SCD_TRANSLATE_TBL_OFFSET + ((x) * 2)) & 0xfffc)
+	((IWLAGN_SCD_TRANS_TBL_MEM_LOWER_BOUND + ((x) * 2)) & 0xfffc)
 
 #define IWLAGN_SCD_QUEUECHAIN_SEL_ALL(priv)	\
 	(((1<<(priv)->hw_params.max_txq_num) - 1) &\
diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index 3efa7066e987..87148bb3f628 100644
--- a/drivers/net/wireless/iwlwifi/iwl-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-rx.c
@@ -134,7 +134,6 @@ int iwl_rx_queue_space(const struct iwl_rx_queue *q)
 void iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
 {
 	unsigned long flags;
-	u32 rx_wrt_ptr_reg = priv->hw_params.rx_wrt_ptr_reg;
 	u32 reg;
 
 	spin_lock_irqsave(&q->lock, flags);
@@ -146,7 +145,7 @@ void iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q
 		/* shadow register enabled */
 		/* Device expects a multiple of 8 */
 		q->write_actual = (q->write & ~0x7);
-		iwl_write32(priv, rx_wrt_ptr_reg, q->write_actual);
+		iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write_actual);
 	} else {
 		/* If power-saving is in use, make sure device is awake */
 		if (test_bit(STATUS_POWER_PMI, &priv->status)) {
@@ -162,14 +161,14 @@ void iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q
 			}
 
 			q->write_actual = (q->write & ~0x7);
-			iwl_write_direct32(priv, rx_wrt_ptr_reg,
+			iwl_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
 					q->write_actual);
 
 		/* Else device is assumed to be awake */
 		} else {
 			/* Device expects a multiple of 8 */
 			q->write_actual = (q->write & ~0x7);
-			iwl_write_direct32(priv, rx_wrt_ptr_reg,
+			iwl_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
 				q->write_actual);
 		}
 	}
@@ -179,46 +178,6 @@ void iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q
 	spin_unlock_irqrestore(&q->lock, flags);
 }
 
-int iwl_rx_queue_alloc(struct iwl_priv *priv)
-{
-	struct iwl_rx_queue *rxq = &priv->rxq;
-	struct device *dev = priv->bus.dev;
-	int i;
-
-	spin_lock_init(&rxq->lock);
-	INIT_LIST_HEAD(&rxq->rx_free);
-	INIT_LIST_HEAD(&rxq->rx_used);
-
-	/* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
-	rxq->bd = dma_alloc_coherent(dev, 4 * RX_QUEUE_SIZE, &rxq->bd_dma,
-				     GFP_KERNEL);
-	if (!rxq->bd)
-		goto err_bd;
-
-	rxq->rb_stts = dma_alloc_coherent(dev, sizeof(struct iwl_rb_status),
-					  &rxq->rb_stts_dma, GFP_KERNEL);
-	if (!rxq->rb_stts)
-		goto err_rb;
-
-	/* Fill the rx_used queue with _all_ of the Rx buffers */
-	for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
-		list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
-
-	/* Set us so that we have processed and used all buffers, but have
-	 * not restocked the Rx queue with fresh buffers */
-	rxq->read = rxq->write = 0;
-	rxq->write_actual = 0;
-	rxq->free_count = 0;
-	rxq->need_update = 0;
-	return 0;
-
-err_rb:
-	dma_free_coherent(dev, 4 * RX_QUEUE_SIZE, rxq->bd,
-			  rxq->bd_dma);
-err_bd:
-	return -ENOMEM;
-}
-
 /******************************************************************************
  *
  * Generic RX handler implementations
diff --git a/drivers/net/wireless/iwlwifi/iwl-testmode.h b/drivers/net/wireless/iwlwifi/iwl-testmode.h
index 160911a3716a..d825188e5215 100644
--- a/drivers/net/wireless/iwlwifi/iwl-testmode.h
+++ b/drivers/net/wireless/iwlwifi/iwl-testmode.h
@@ -66,116 +66,144 @@
 #include <linux/types.h>
 
 
-/* Commands from user space to kernel space(IWL_TM_CMD_ID_APP2DEV_XX) and
+/*
+ * Commands from user space to kernel space(IWL_TM_CMD_ID_APP2DEV_XX) and
  * from and kernel space to user space(IWL_TM_CMD_ID_DEV2APP_XX).
- * The command ID is carried with IWL_TM_ATTR_COMMAND. There are three types of
- * of command from user space and two types of command from kernel space.
- * See below.
+ * The command ID is carried with IWL_TM_ATTR_COMMAND.
+ *
+ * @IWL_TM_CMD_APP2DEV_UCODE:
+ *	commands from user application to the uCode,
+ *	the actual uCode host command ID is carried with
+ *	IWL_TM_ATTR_UCODE_CMD_ID
+ *
+ * @IWL_TM_CMD_APP2DEV_REG_READ32:
+ * @IWL_TM_CMD_APP2DEV_REG_WRITE32:
+ * @IWL_TM_CMD_APP2DEV_REG_WRITE8:
+ *	commands from user applicaiton to access register
+ *
+ * @IWL_TM_CMD_APP2DEV_GET_DEVICENAME: retrieve device name
+ * @IWL_TM_CMD_APP2DEV_LOAD_INIT_FW: load initial uCode image
+ * @IWL_TM_CMD_APP2DEV_CFG_INIT_CALIB: perform calibration
+ * @IWL_TM_CMD_APP2DEV_LOAD_RUNTIME_FW: load runtime uCode image
+ * @IWL_TM_CMD_APP2DEV_GET_EEPROM: request EEPROM data
+ * @IWL_TM_CMD_APP2DEV_FIXRATE_REQ: set fix MCS
+ *	commands fom user space for pure driver level operations
+ *
+ * @IWL_TM_CMD_APP2DEV_BEGIN_TRACE:
+ * @IWL_TM_CMD_APP2DEV_END_TRACE:
+ * @IWL_TM_CMD_APP2DEV_READ_TRACE:
+ *	commands fom user space for uCode trace operations
+ *
+ * @IWL_TM_CMD_DEV2APP_SYNC_RSP:
+ *	commands from kernel space to carry the synchronous response
+ *	to user application
+ * @IWL_TM_CMD_DEV2APP_UCODE_RX_PKT:
+ *	commands from kernel space to multicast the spontaneous messages
+ *	to user application
+ * @IWL_TM_CMD_DEV2APP_EEPROM_RSP:
+ *	commands from kernel space to carry the eeprom response
+ *	to user application
  */
 enum iwl_tm_cmd_t {
-	/* commands from user application to the uCode,
-	 * the actual uCode host command ID is carried with
-	 * IWL_TM_ATTR_UCODE_CMD_ID */
-	IWL_TM_CMD_APP2DEV_UCODE = 1,
-
-	/* commands from user applicaiton to access register */
-	IWL_TM_CMD_APP2DEV_REG_READ32,
-	IWL_TM_CMD_APP2DEV_REG_WRITE32,
-	IWL_TM_CMD_APP2DEV_REG_WRITE8,
-
-	/* commands fom user space for pure driver level operations */
-	IWL_TM_CMD_APP2DEV_GET_DEVICENAME,
-	IWL_TM_CMD_APP2DEV_LOAD_INIT_FW,
-	IWL_TM_CMD_APP2DEV_CFG_INIT_CALIB,
-	IWL_TM_CMD_APP2DEV_LOAD_RUNTIME_FW,
-	IWL_TM_CMD_APP2DEV_GET_EEPROM,
-	IWL_TM_CMD_APP2DEV_FIXRATE_REQ,
-	/* if there is other new command for the driver layer operation,
-	 * append them here */
-
-	/* commands fom user space for uCode trace operations */
-	IWL_TM_CMD_APP2DEV_BEGIN_TRACE,
-	IWL_TM_CMD_APP2DEV_END_TRACE,
-	IWL_TM_CMD_APP2DEV_READ_TRACE,
-
-	/* commands from kernel space to carry the synchronous response
-	 * to user application */
-	IWL_TM_CMD_DEV2APP_SYNC_RSP,
-
-	/* commands from kernel space to multicast the spontaneous messages
-	 * to user application */
-	IWL_TM_CMD_DEV2APP_UCODE_RX_PKT,
-
-	/* commands from kernel space to carry the eeprom response
-	 * to user application */
-	IWL_TM_CMD_DEV2APP_EEPROM_RSP,
-
-	IWL_TM_CMD_MAX,
+	IWL_TM_CMD_APP2DEV_UCODE		= 1,
+	IWL_TM_CMD_APP2DEV_REG_READ32		= 2,
+	IWL_TM_CMD_APP2DEV_REG_WRITE32		= 3,
+	IWL_TM_CMD_APP2DEV_REG_WRITE8		= 4,
+	IWL_TM_CMD_APP2DEV_GET_DEVICENAME	= 5,
+	IWL_TM_CMD_APP2DEV_LOAD_INIT_FW		= 6,
+	IWL_TM_CMD_APP2DEV_CFG_INIT_CALIB	= 7,
+	IWL_TM_CMD_APP2DEV_LOAD_RUNTIME_FW	= 8,
+	IWL_TM_CMD_APP2DEV_GET_EEPROM		= 9,
+	IWL_TM_CMD_APP2DEV_FIXRATE_REQ		= 10,
+	IWL_TM_CMD_APP2DEV_BEGIN_TRACE		= 11,
+	IWL_TM_CMD_APP2DEV_END_TRACE		= 12,
+	IWL_TM_CMD_APP2DEV_READ_TRACE		= 13,
+	IWL_TM_CMD_DEV2APP_SYNC_RSP		= 14,
+	IWL_TM_CMD_DEV2APP_UCODE_RX_PKT		= 15,
+	IWL_TM_CMD_DEV2APP_EEPROM_RSP		= 16,
+	IWL_TM_CMD_MAX				= 17,
 };
 
+/*
+ * Atrribute filed in testmode command
+ * See enum iwl_tm_cmd_t.
+ *
+ * @IWL_TM_ATTR_NOT_APPLICABLE:
+ *	The attribute is not applicable or invalid
+ * @IWL_TM_ATTR_COMMAND:
+ *	From user space to kernel space:
+ *	the command either destines to ucode, driver, or register;
+ *	From kernel space to user space:
+ *	the command either carries synchronous response,
+ *	or the spontaneous message multicast from the device;
+ *
+ * @IWL_TM_ATTR_UCODE_CMD_ID:
+ * @IWL_TM_ATTR_UCODE_CMD_DATA:
+ *	When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_UCODE,
+ *	The mandatory fields are :
+ *	IWL_TM_ATTR_UCODE_CMD_ID for recognizable command ID;
+ *	IWL_TM_ATTR_COMMAND_FLAG for the flags of the commands;
+ *	The optional fields are:
+ *	IWL_TM_ATTR_UCODE_CMD_DATA for the actual command payload
+ *	to the ucode
+ *
+ * @IWL_TM_ATTR_REG_OFFSET:
+ * @IWL_TM_ATTR_REG_VALUE8:
+ * @IWL_TM_ATTR_REG_VALUE32:
+ *	When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_REG_XXX,
+ *	The mandatory fields are:
+ *	IWL_TM_ATTR_REG_OFFSET for the offset of the target register;
+ *	IWL_TM_ATTR_REG_VALUE8 or IWL_TM_ATTR_REG_VALUE32 for value
+ *
+ * @IWL_TM_ATTR_SYNC_RSP:
+ *	When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_DEV2APP_SYNC_RSP,
+ *	The mandatory fields are:
+ *	IWL_TM_ATTR_SYNC_RSP for the data content responding to the user
+ *	application command
+ *
+ * @IWL_TM_ATTR_UCODE_RX_PKT:
+ *	When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_DEV2APP_UCODE_RX_PKT,
+ *	The mandatory fields are:
+ *	IWL_TM_ATTR_UCODE_RX_PKT for the data content multicast to the user
+ *	application
+ *
+ * @IWL_TM_ATTR_EEPROM:
+ *	When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_DEV2APP_EEPROM,
+ *	The mandatory fields are:
+ *	IWL_TM_ATTR_EEPROM for the data content responging to the user
+ *	application
+ *
+ * @IWL_TM_ATTR_TRACE_ADDR:
+ * @IWL_TM_ATTR_TRACE_SIZE:
+ * @IWL_TM_ATTR_TRACE_DUMP:
+ *	When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_XXX_TRACE,
+ *	The mandatory fields are:
+ *	IWL_TM_ATTR_MEM_TRACE_ADDR for the trace address
+ *	IWL_TM_ATTR_MEM_TRACE_SIZE for the trace buffer size
+ *	IWL_TM_ATTR_MEM_TRACE_DUMP for the trace dump
+ *
+ * @IWL_TM_ATTR_FIXRATE:
+ *	When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_FIXRATE_REQ,
+ *	The mandatory fields are:
+ *	IWL_TM_ATTR_FIXRATE for the fixed rate
+ *
+ */
 enum iwl_tm_attr_t {
-	IWL_TM_ATTR_NOT_APPLICABLE = 0,
-
-	/* From user space to kernel space:
-	 * the command either destines to ucode, driver, or register;
-	 * See enum iwl_tm_cmd_t.
-	 *
-	 * From kernel space to user space:
-	 * the command either carries synchronous response,
-	 * or the spontaneous message multicast from the device;
-	 * See enum iwl_tm_cmd_t. */
-	IWL_TM_ATTR_COMMAND,
-
-	/* When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_UCODE,
-	 * The mandatory fields are :
-	 * IWL_TM_ATTR_UCODE_CMD_ID for recognizable command ID;
-	 * IWL_TM_ATTR_COMMAND_FLAG for the flags of the commands;
-	 * The optional fields are:
-	 * IWL_TM_ATTR_UCODE_CMD_DATA for the actual command payload
-	 * to the ucode */
-	IWL_TM_ATTR_UCODE_CMD_ID,
-	IWL_TM_ATTR_UCODE_CMD_DATA,
-
-	/* When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_REG_XXX,
-	 * The mandatory fields are:
-	 * IWL_TM_ATTR_REG_OFFSET for the offset of the target register;
-	 * IWL_TM_ATTR_REG_VALUE8 or IWL_TM_ATTR_REG_VALUE32 for value */
-	IWL_TM_ATTR_REG_OFFSET,
-	IWL_TM_ATTR_REG_VALUE8,
-	IWL_TM_ATTR_REG_VALUE32,
-
-	/* When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_DEV2APP_SYNC_RSP,
-	 * The mandatory fields are:
-	 * IWL_TM_ATTR_SYNC_RSP for the data content responding to the user
-	 * application command */
-	IWL_TM_ATTR_SYNC_RSP,
-	/* When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_DEV2APP_UCODE_RX_PKT,
-	 * The mandatory fields are:
-	 * IWL_TM_ATTR_UCODE_RX_PKT for the data content multicast to the user
-	 * application */
-	IWL_TM_ATTR_UCODE_RX_PKT,
-
-	/* When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_DEV2APP_EEPROM,
-	 * The mandatory fields are:
-	 * IWL_TM_ATTR_EEPROM for the data content responging to the user
-	 * application */
-	IWL_TM_ATTR_EEPROM,
-
-	/* When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_XXX_TRACE,
-	 * The mandatory fields are:
-	 * IWL_TM_ATTR_MEM_TRACE_ADDR for the trace address
-	 */
-	IWL_TM_ATTR_TRACE_ADDR,
-	IWL_TM_ATTR_TRACE_SIZE,
-	IWL_TM_ATTR_TRACE_DUMP,
-
-	/* When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_FIXRATE_REQ,
-	 * The mandatory fields are:
-	 * IWL_TM_ATTR_FIXRATE for the fixed rate
-	 */
-	IWL_TM_ATTR_FIXRATE,
-
-	IWL_TM_ATTR_MAX,
+	IWL_TM_ATTR_NOT_APPLICABLE		= 0,
+	IWL_TM_ATTR_COMMAND			= 1,
+	IWL_TM_ATTR_UCODE_CMD_ID		= 2,
+	IWL_TM_ATTR_UCODE_CMD_DATA		= 3,
+	IWL_TM_ATTR_REG_OFFSET			= 4,
+	IWL_TM_ATTR_REG_VALUE8			= 5,
+	IWL_TM_ATTR_REG_VALUE32			= 6,
+	IWL_TM_ATTR_SYNC_RSP			= 7,
+	IWL_TM_ATTR_UCODE_RX_PKT		= 8,
+	IWL_TM_ATTR_EEPROM			= 9,
+	IWL_TM_ATTR_TRACE_ADDR			= 10,
+	IWL_TM_ATTR_TRACE_SIZE			= 11,
+	IWL_TM_ATTR_TRACE_DUMP			= 12,
+	IWL_TM_ATTR_FIXRATE			= 13,
+	IWL_TM_ATTR_MAX				= 14,
 };
 
 /* uCode trace buffer */
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.c b/drivers/net/wireless/iwlwifi/iwl-trans.c
new file mode 100644
index 000000000000..7b7b97d8c2e1
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.c
@@ -0,0 +1,423 @@
+/******************************************************************************
+ *
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2007 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
+ * USA
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ *  Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *  * Neither the name Intel Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *****************************************************************************/
+#include "iwl-dev.h"
+#include "iwl-trans.h"
+#include "iwl-core.h"
+#include "iwl-helpers.h"
+/*TODO remove uneeded includes when the transport layer tx_free will be here */
+#include "iwl-agn.h"
+
+static int iwl_trans_rx_alloc(struct iwl_priv *priv)
+{
+	struct iwl_rx_queue *rxq = &priv->rxq;
+	struct device *dev = priv->bus.dev;
+
+	memset(&priv->rxq, 0, sizeof(priv->rxq));
+
+	spin_lock_init(&rxq->lock);
+	INIT_LIST_HEAD(&rxq->rx_free);
+	INIT_LIST_HEAD(&rxq->rx_used);
+
+	if (WARN_ON(rxq->bd || rxq->rb_stts))
+		return -EINVAL;
+
+	/* Allocate the circular buffer of Read Buffer Descriptors (RBDs) */
+	rxq->bd = dma_alloc_coherent(dev, sizeof(__le32) * RX_QUEUE_SIZE,
+				     &rxq->bd_dma, GFP_KERNEL);
+	if (!rxq->bd)
+		goto err_bd;
+	memset(rxq->bd, 0, sizeof(__le32) * RX_QUEUE_SIZE);
+
+	/*Allocate the driver's pointer to receive buffer status */
+	rxq->rb_stts = dma_alloc_coherent(dev, sizeof(*rxq->rb_stts),
+					  &rxq->rb_stts_dma, GFP_KERNEL);
+	if (!rxq->rb_stts)
+		goto err_rb_stts;
+	memset(rxq->rb_stts, 0, sizeof(*rxq->rb_stts));
+
+	return 0;
+
+err_rb_stts:
+	dma_free_coherent(dev, sizeof(__le32) * RX_QUEUE_SIZE,
+			rxq->bd, rxq->bd_dma);
+	memset(&rxq->bd_dma, 0, sizeof(rxq->bd_dma));
+	rxq->bd = NULL;
+err_bd:
+	return -ENOMEM;
+}
+
+static void iwl_trans_rxq_free_rx_bufs(struct iwl_priv *priv)
+{
+	struct iwl_rx_queue *rxq = &priv->rxq;
+	int i;
+
+	/* Fill the rx_used queue with _all_ of the Rx buffers */
+	for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
+		/* In the reset function, these buffers may have been allocated
+		 * to an SKB, so we need to unmap and free potential storage */
+		if (rxq->pool[i].page != NULL) {
+			dma_unmap_page(priv->bus.dev, rxq->pool[i].page_dma,
+				PAGE_SIZE << priv->hw_params.rx_page_order,
+				DMA_FROM_DEVICE);
+			__iwl_free_pages(priv, rxq->pool[i].page);
+			rxq->pool[i].page = NULL;
+		}
+		list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
+	}
+}
+
+static int iwl_trans_rx_init(struct iwl_priv *priv)
+{
+	struct iwl_rx_queue *rxq = &priv->rxq;
+	int i, err;
+	unsigned long flags;
+
+	if (!rxq->bd) {
+		err = iwl_trans_rx_alloc(priv);
+		if (err)
+			return err;
+	}
+
+	spin_lock_irqsave(&rxq->lock, flags);
+	INIT_LIST_HEAD(&rxq->rx_free);
+	INIT_LIST_HEAD(&rxq->rx_used);
+
+	iwl_trans_rxq_free_rx_bufs(priv);
+
+	for (i = 0; i < RX_QUEUE_SIZE; i++)
+		rxq->queue[i] = NULL;
+
+	/* Set us so that we have processed and used all buffers, but have
+	 * not restocked the Rx queue with fresh buffers */
+	rxq->read = rxq->write = 0;
+	rxq->write_actual = 0;
+	rxq->free_count = 0;
+	spin_unlock_irqrestore(&rxq->lock, flags);
+
+	return 0;
+}
+
+static void iwl_trans_rx_free(struct iwl_priv *priv)
+{
+	struct iwl_rx_queue *rxq = &priv->rxq;
+	unsigned long flags;
+
+	/*if rxq->bd is NULL, it means that nothing has been allocated,
+	 * exit now */
+	if (!rxq->bd) {
+		IWL_DEBUG_INFO(priv, "Free NULL rx context\n");
+		return;
+	}
+
+	spin_lock_irqsave(&rxq->lock, flags);
+	iwl_trans_rxq_free_rx_bufs(priv);
+	spin_unlock_irqrestore(&rxq->lock, flags);
+
+	dma_free_coherent(priv->bus.dev, sizeof(__le32) * RX_QUEUE_SIZE,
+			  rxq->bd, rxq->bd_dma);
+	memset(&rxq->bd_dma, 0, sizeof(rxq->bd_dma));
+	rxq->bd = NULL;
+
+	if (rxq->rb_stts)
+		dma_free_coherent(priv->bus.dev,
+				  sizeof(struct iwl_rb_status),
+				  rxq->rb_stts, rxq->rb_stts_dma);
+	else
+		IWL_DEBUG_INFO(priv, "Free rxq->rb_stts which is NULL\n");
+	memset(&rxq->rb_stts_dma, 0, sizeof(rxq->rb_stts_dma));
+	rxq->rb_stts = NULL;
+}
+
+/* TODO:remove this code duplication */
+static inline int iwlagn_alloc_dma_ptr(struct iwl_priv *priv,
+				    struct iwl_dma_ptr *ptr, size_t size)
+{
+	if (WARN_ON(ptr->addr))
+		return -EINVAL;
+
+	ptr->addr = dma_alloc_coherent(priv->bus.dev, size,
+				       &ptr->dma, GFP_KERNEL);
+	if (!ptr->addr)
+		return -ENOMEM;
+	ptr->size = size;
+	return 0;
+}
+
+static int iwl_trans_txq_alloc(struct iwl_priv *priv, struct iwl_tx_queue *txq,
+		      int slots_num, u32 txq_id)
+{
+	size_t tfd_sz = priv->hw_params.tfd_size * TFD_QUEUE_SIZE_MAX;
+	int i;
+
+	if (WARN_ON(txq->meta || txq->cmd || txq->txb || txq->tfds))
+		return -EINVAL;
+
+	txq->meta = kzalloc(sizeof(txq->meta[0]) * slots_num,
+			    GFP_KERNEL);
+	txq->cmd = kzalloc(sizeof(txq->cmd[0]) * slots_num,
+			   GFP_KERNEL);
+
+	if (!txq->meta || !txq->cmd)
+		goto error;
+
+	for (i = 0; i < slots_num; i++) {
+		txq->cmd[i] = kmalloc(sizeof(struct iwl_device_cmd),
+					GFP_KERNEL);
+		if (!txq->cmd[i])
+			goto error;
+	}
+
+	/* Alloc driver data array and TFD circular buffer */
+	/* Driver private data, only for Tx (not command) queues,
+	 * not shared with device. */
+	if (txq_id != priv->cmd_queue) {
+		txq->txb = kzalloc(sizeof(txq->txb[0]) *
+				   TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
+		if (!txq->txb) {
+			IWL_ERR(priv, "kmalloc for auxiliary BD "
+				  "structures failed\n");
+			goto error;
+		}
+	} else {
+		txq->txb = NULL;
+	}
+
+	/* Circular buffer of transmit frame descriptors (TFDs),
+	 * shared with device */
+	txq->tfds = dma_alloc_coherent(priv->bus.dev, tfd_sz, &txq->q.dma_addr,
+				       GFP_KERNEL);
+	if (!txq->tfds) {
+		IWL_ERR(priv, "dma_alloc_coherent(%zd) failed\n", tfd_sz);
+		goto error;
+	}
+	txq->q.id = txq_id;
+
+	return 0;
+error:
+	kfree(txq->txb);
+	txq->txb = NULL;
+	/* since txq->cmd has been zeroed,
+	 * all non allocated cmd[i] will be NULL */
+	if (txq->cmd)
+		for (i = 0; i < slots_num; i++)
+			kfree(txq->cmd[i]);
+	kfree(txq->meta);
+	kfree(txq->cmd);
+	txq->meta = NULL;
+	txq->cmd = NULL;
+
+	return -ENOMEM;
+
+}
+
+static int iwl_trans_txq_init(struct iwl_priv *priv, struct iwl_tx_queue *txq,
+		      int slots_num, u32 txq_id)
+{
+	int ret;
+
+	txq->need_update = 0;
+	memset(txq->meta, 0, sizeof(txq->meta[0]) * slots_num);
+
+	/*
+	 * For the default queues 0-3, set up the swq_id
+	 * already -- all others need to get one later
+	 * (if they need one at all).
+	 */
+	if (txq_id < 4)
+		iwl_set_swq_id(txq, txq_id, txq_id);
+
+	/* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
+	 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
+	BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
+
+	/* Initialize queue's high/low-water marks, and head/tail indexes */
+	ret = iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num,
+			txq_id);
+	if (ret)
+		return ret;
+
+	/*
+	 * Tell nic where to find circular buffer of Tx Frame Descriptors for
+	 * given Tx queue, and enable the DMA channel used for that queue.
+	 * Circular buffer (TFD queue in DRAM) physical base address */
+	iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
+			     txq->q.dma_addr >> 8);
+
+	return 0;
+}
+
+/**
+ * iwl_trans_tx_alloc - allocate TX context
+ * Allocate all Tx DMA structures and initialize them
+ *
+ * @param priv
+ * @return error code
+ */
+static int iwl_trans_tx_alloc(struct iwl_priv *priv)
+{
+	int ret;
+	int txq_id, slots_num;
+
+	/*It is not allowed to alloc twice, so warn when this happens.
+	 * We cannot rely on the previous allocation, so free and fail */
+	if (WARN_ON(priv->txq)) {
+		ret = -EINVAL;
+		goto error;
+	}
+
+	ret = iwlagn_alloc_dma_ptr(priv, &priv->scd_bc_tbls,
+				priv->hw_params.scd_bc_tbls_size);
+	if (ret) {
+		IWL_ERR(priv, "Scheduler BC Table allocation failed\n");
+		goto error;
+	}
+
+	/* Alloc keep-warm buffer */
+	ret = iwlagn_alloc_dma_ptr(priv, &priv->kw, IWL_KW_SIZE);
+	if (ret) {
+		IWL_ERR(priv, "Keep Warm allocation failed\n");
+		goto error;
+	}
+
+	priv->txq = kzalloc(sizeof(struct iwl_tx_queue) *
+			priv->cfg->base_params->num_of_queues, GFP_KERNEL);
+	if (!priv->txq) {
+		IWL_ERR(priv, "Not enough memory for txq\n");
+		ret = ENOMEM;
+		goto error;
+	}
+
+	/* Alloc and init all Tx queues, including the command queue (#4/#9) */
+	for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
+		slots_num = (txq_id == priv->cmd_queue) ?
+					TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
+		ret = iwl_trans_txq_alloc(priv, &priv->txq[txq_id], slots_num,
+				       txq_id);
+		if (ret) {
+			IWL_ERR(priv, "Tx %d queue alloc failed\n", txq_id);
+			goto error;
+		}
+	}
+
+	return 0;
+
+error:
+	iwlagn_hw_txq_ctx_free(priv);
+
+	return ret;
+}
+static int iwl_trans_tx_init(struct iwl_priv *priv)
+{
+	int ret;
+	int txq_id, slots_num;
+	unsigned long flags;
+	bool alloc = false;
+
+	if (!priv->txq) {
+		ret = iwl_trans_tx_alloc(priv);
+		if (ret)
+			goto error;
+		alloc = true;
+	}
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	/* Turn off all Tx DMA fifos */
+	iwl_write_prph(priv, IWLAGN_SCD_TXFACT, 0);
+
+	/* Tell NIC where to find the "keep warm" buffer */
+	iwl_write_direct32(priv, FH_KW_MEM_ADDR_REG, priv->kw.dma >> 4);
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	/* Alloc and init all Tx queues, including the command queue (#4/#9) */
+	for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
+		slots_num = (txq_id == priv->cmd_queue) ?
+					TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
+		ret = iwl_trans_txq_init(priv, &priv->txq[txq_id], slots_num,
+				       txq_id);
+		if (ret) {
+			IWL_ERR(priv, "Tx %d queue init failed\n", txq_id);
+			goto error;
+		}
+	}
+
+	return 0;
+error:
+	/*Upon error, free only if we allocated something */
+	if (alloc)
+		iwlagn_hw_txq_ctx_free(priv);
+	return ret;
+}
+
+static const struct iwl_trans_ops trans_ops = {
+	.rx_init = iwl_trans_rx_init,
+	.rx_free = iwl_trans_rx_free,
+
+	.tx_init = iwl_trans_tx_init,
+};
+
+void iwl_trans_register(struct iwl_trans *trans)
+{
+	trans->ops = &trans_ops;
+}
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h
new file mode 100644
index 000000000000..bec494c5a979
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.h
@@ -0,0 +1,64 @@
+/******************************************************************************
+ *
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2007 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
+ * USA
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ *  Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *  * Neither the name Intel Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *****************************************************************************/
+
+void iwl_trans_register(struct iwl_trans *trans);
diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c
index e72d2279fc5d..db5abaa2ff7e 100644
--- a/drivers/net/wireless/iwlwifi/iwl-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-tx.c
@@ -220,24 +220,6 @@ int iwlagn_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 	return 0;
 }
 
-/*
- * Tell nic where to find circular buffer of Tx Frame Descriptors for
- * given Tx queue, and enable the DMA channel used for that queue.
- *
- * supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
- * channels supported in hardware.
- */
-static int iwlagn_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq)
-{
-	int txq_id = txq->q.id;
-
-	/* Circular buffer (TFD queue in DRAM) physical base address */
-	iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
-			     txq->q.dma_addr >> 8);
-
-	return 0;
-}
-
 /**
  * iwl_tx_queue_unmap -  Unmap any remaining DMA mappings and free skb's
  */
@@ -392,11 +374,10 @@ int iwl_queue_space(const struct iwl_queue *q)
 	return s;
 }
 
-
 /**
  * iwl_queue_init - Initialize queue's high/low-water and read/write indexes
  */
-static int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
+int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
 			  int count, int slots_num, u32 id)
 {
 	q->n_bd = count;
@@ -426,124 +407,6 @@ static int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
 	return 0;
 }
 
-/**
- * iwl_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
- */
-static int iwl_tx_queue_alloc(struct iwl_priv *priv,
-			      struct iwl_tx_queue *txq, u32 id)
-{
-	struct device *dev = priv->bus.dev;
-	size_t tfd_sz = priv->hw_params.tfd_size * TFD_QUEUE_SIZE_MAX;
-
-	/* Driver private data, only for Tx (not command) queues,
-	 * not shared with device. */
-	if (id != priv->cmd_queue) {
-		txq->txb = kzalloc(sizeof(txq->txb[0]) *
-				   TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
-		if (!txq->txb) {
-			IWL_ERR(priv, "kmalloc for auxiliary BD "
-				  "structures failed\n");
-			goto error;
-		}
-	} else {
-		txq->txb = NULL;
-	}
-
-	/* Circular buffer of transmit frame descriptors (TFDs),
-	 * shared with device */
-	txq->tfds = dma_alloc_coherent(dev, tfd_sz, &txq->q.dma_addr,
-				       GFP_KERNEL);
-	if (!txq->tfds) {
-		IWL_ERR(priv, "dma_alloc_coherent(%zd) failed\n", tfd_sz);
-		goto error;
-	}
-	txq->q.id = id;
-
-	return 0;
-
- error:
-	kfree(txq->txb);
-	txq->txb = NULL;
-
-	return -ENOMEM;
-}
-
-/**
- * iwl_tx_queue_init - Allocate and initialize one tx/cmd queue
- */
-int iwl_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq,
-		      int slots_num, u32 txq_id)
-{
-	int i, len;
-	int ret;
-
-	txq->meta = kzalloc(sizeof(struct iwl_cmd_meta) * slots_num,
-			    GFP_KERNEL);
-	txq->cmd = kzalloc(sizeof(struct iwl_device_cmd *) * slots_num,
-			   GFP_KERNEL);
-
-	if (!txq->meta || !txq->cmd)
-		goto out_free_arrays;
-
-	len = sizeof(struct iwl_device_cmd);
-	for (i = 0; i < slots_num; i++) {
-		txq->cmd[i] = kmalloc(len, GFP_KERNEL);
-		if (!txq->cmd[i])
-			goto err;
-	}
-
-	/* Alloc driver data array and TFD circular buffer */
-	ret = iwl_tx_queue_alloc(priv, txq, txq_id);
-	if (ret)
-		goto err;
-
-	txq->need_update = 0;
-
-	/*
-	 * For the default queues 0-3, set up the swq_id
-	 * already -- all others need to get one later
-	 * (if they need one at all).
-	 */
-	if (txq_id < 4)
-		iwl_set_swq_id(txq, txq_id, txq_id);
-
-	/* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
-	 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
-	BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
-
-	/* Initialize queue's high/low-water marks, and head/tail indexes */
-	ret = iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
-	if (ret)
-		return ret;
-
-	/* Tell device where to find queue */
-	iwlagn_tx_queue_init(priv, txq);
-
-	return 0;
-err:
-	for (i = 0; i < slots_num; i++)
-		kfree(txq->cmd[i]);
-out_free_arrays:
-	kfree(txq->meta);
-	kfree(txq->cmd);
-
-	return -ENOMEM;
-}
-
-void iwl_tx_queue_reset(struct iwl_priv *priv, struct iwl_tx_queue *txq,
-			int slots_num, u32 txq_id)
-{
-	memset(txq->meta, 0, sizeof(struct iwl_cmd_meta) * slots_num);
-
-	txq->need_update = 0;
-
-	/* Initialize queue's high/low-water marks, and head/tail indexes */
-	iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
-
-	/* Tell device where to find queue */
-	iwlagn_tx_queue_init(priv, txq);
-}
-
 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
 
 /**