iwlwifi: move agn only tx functions from iwlcore to iwlagn

Identify the tx functions only used by agn driver and move those from
iwlcore to iwlagn.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

drivers/net/wireless/iwlwifi/iwl-4965.c

@@ -46,6 +46,7 @@
 #include "iwl-calib.h"
 #include "iwl-sta.h"
 #include "iwl-agn-led.h"
+#include "iwl-agn.h"
 
 static int iwl4965_send_tx_power(struct iwl_priv *priv);
 static int iwl4965_hw_get_temperature(struct iwl_priv *priv);
@@ -2020,7 +2021,7 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
 			index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
 			IWL_DEBUG_TX_REPLY(priv, "Retry scheduler reclaim scd_ssn "
 					   "%d index %d\n", scd_ssn , index);
-			freed = iwl_tx_queue_reclaim(priv, txq_id, index);
+			freed = iwlagn_tx_queue_reclaim(priv, txq_id, index);
 			iwl_free_tfds_in_queue(priv, sta_id, tid, freed);
 
 			if (priv->mac80211_registered &&
@@ -2046,7 +2047,7 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
 				   le32_to_cpu(tx_resp->rate_n_flags),
 				   tx_resp->failure_frame);
 
-		freed = iwl_tx_queue_reclaim(priv, txq_id, index);
+		freed = iwlagn_tx_queue_reclaim(priv, txq_id, index);
 		if (qc && likely(sta_id != IWL_INVALID_STATION))
 			priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
 
@@ -2056,7 +2057,7 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
 	}
 
 	if (qc && likely(sta_id != IWL_INVALID_STATION))
-		iwl_txq_check_empty(priv, sta_id, tid, txq_id);
+		iwlagn_txq_check_empty(priv, sta_id, tid, txq_id);
 
 	if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
 		IWL_ERR(priv, "TODO:  Implement Tx ABORT REQUIRED!!!\n");

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

@@ -208,7 +208,7 @@ static void iwlagn_rx_reply_tx(struct iwl_priv *priv,
 					"scd_ssn=%d idx=%d txq=%d swq=%d\n",
 					scd_ssn , index, txq_id, txq->swq_id);
 
-			freed = iwl_tx_queue_reclaim(priv, txq_id, index);
+			freed = iwlagn_tx_queue_reclaim(priv, txq_id, index);
 			iwl_free_tfds_in_queue(priv, sta_id, tid, freed);
 
 			if (priv->mac80211_registered &&
@@ -236,7 +236,7 @@ static void iwlagn_rx_reply_tx(struct iwl_priv *priv,
 				   le32_to_cpu(tx_resp->rate_n_flags),
 				   tx_resp->failure_frame);
 
-		freed = iwl_tx_queue_reclaim(priv, txq_id, index);
+		freed = iwlagn_tx_queue_reclaim(priv, txq_id, index);
 		iwl_free_tfds_in_queue(priv, sta_id, tid, freed);
 
 		if (priv->mac80211_registered &&
@@ -244,7 +244,7 @@ static void iwlagn_rx_reply_tx(struct iwl_priv *priv,
 			iwl_wake_queue(priv, txq_id);
 	}
 
-	iwl_txq_check_empty(priv, sta_id, tid, txq_id);
+	iwlagn_txq_check_empty(priv, sta_id, tid, txq_id);
 
 	if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
 		IWL_ERR(priv, "TODO:  Implement Tx ABORT REQUIRED!!!\n");
@@ -381,3 +381,133 @@ struct iwl_mod_params iwlagn_mod_params = {
 	.restart_fw = 1,
 	/* 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) {
+			pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
+				PAGE_SIZE << priv->hw_params.rx_page_order,
+				PCI_DMA_FROMDEVICE);
+			__iwl_free_pages(priv, rxq->pool[i].page);
+			rxq->pool[i].page = NULL;
+		}
+		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;
+	spin_unlock_irqrestore(&rxq->lock, flags);
+}
+
+int iwlagn_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
+{
+	u32 rb_size;
+	const u32 rfdnlog = RX_QUEUE_SIZE_LOG; /* 256 RBDs */
+	u32 rb_timeout = 0; /* FIXME: RX_RB_TIMEOUT for all devices? */
+
+	if (!priv->cfg->use_isr_legacy)
+		rb_timeout = RX_RB_TIMEOUT;
+
+	if (priv->cfg->mod_params->amsdu_size_8K)
+		rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K;
+	else
+		rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K;
+
+	/* Stop Rx DMA */
+	iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0);
+
+	/* Reset driver's Rx queue write index */
+	iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_WPTR_REG, 0);
+
+	/* Tell device where to find RBD circular buffer in DRAM */
+	iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_BASE_REG,
+			   (u32)(rxq->dma_addr >> 8));
+
+	/* Tell device where in DRAM to update its Rx status */
+	iwl_write_direct32(priv, FH_RSCSR_CHNL0_STTS_WPTR_REG,
+			   rxq->rb_stts_dma >> 4);
+
+	/* Enable Rx DMA
+	 * FH_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY is set because of HW bug in
+	 *      the credit mechanism in 5000 HW RX FIFO
+	 * Direct rx interrupts to hosts
+	 * Rx buffer size 4 or 8k
+	 * RB timeout 0x10
+	 * 256 RBDs
+	 */
+	iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG,
+			   FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL |
+			   FH_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY |
+			   FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL |
+			   FH_RCSR_CHNL0_RX_CONFIG_SINGLE_FRAME_MSK |
+			   rb_size|
+			   (rb_timeout << FH_RCSR_RX_CONFIG_REG_IRQ_RBTH_POS)|
+			   (rfdnlog << FH_RCSR_RX_CONFIG_RBDCB_SIZE_POS));
+
+	/* Set interrupt coalescing timer to default (2048 usecs) */
+	iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_TIMEOUT_DEF);
+
+	return 0;
+}
+
+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);
+	priv->cfg->ops->lib->apm_ops.init(priv);
+
+	/* Set interrupt coalescing calibration timer to default (512 usecs) */
+	iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_CALIB_TIMEOUT_DEF);
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
+
+	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);
+
+	iwl_rx_replenish(priv);
+
+	iwlagn_rx_init(priv, rxq);
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	rxq->need_update = 1;
+	iwl_rx_queue_update_write_ptr(priv, rxq);
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	/* Allocate and init all Tx and Command queues */
+	ret = iwlagn_txq_ctx_reset(priv);
+	if (ret)
+		return ret;
+
+	set_bit(STATUS_INIT, &priv->status);
+
+	return 0;
+}

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

@@ -887,7 +887,7 @@ static void iwl_setup_rx_handlers(struct iwl_priv *priv)
 	priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
 	priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
 	/* block ack */
-	priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
+	priv->rx_handlers[REPLY_COMPRESSED_BA] = iwlagn_rx_reply_compressed_ba;
 	/* Set up hardware specific Rx handlers */
 	priv->cfg->ops->lib->rx_handler_setup(priv);
 }
@@ -2249,7 +2249,7 @@ static void __iwl_down(struct iwl_priv *priv)
 	/* device going down, Stop using ICT table */
 	iwl_disable_ict(priv);
 
-	iwl_txq_ctx_stop(priv);
+	iwlagn_txq_ctx_stop(priv);
 	iwl_rxq_stop(priv);
 
 	/* Power-down device's busmaster DMA clocks */
@@ -2371,7 +2371,7 @@ static int __iwl_up(struct iwl_priv *priv)
 
 	iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
 
-	ret = iwl_hw_nic_init(priv);
+	ret = iwlagn_hw_nic_init(priv);
 	if (ret) {
 		IWL_ERR(priv, "Unable to init nic\n");
 		return ret;
@@ -2782,7 +2782,7 @@ static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 	IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
 		     ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
 
-	if (iwl_tx_skb(priv, skb))
+	if (iwlagn_tx_skb(priv, skb))
 		dev_kfree_skb_any(skb);
 
 	IWL_DEBUG_MACDUMP(priv, "leave\n");
@@ -2970,7 +2970,7 @@ static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
 			return ret;
 	case IEEE80211_AMPDU_TX_START:
 		IWL_DEBUG_HT(priv, "start Tx\n");
-		ret = iwl_tx_agg_start(priv, sta->addr, tid, ssn);
+		ret = iwlagn_tx_agg_start(priv, sta->addr, tid, ssn);
 		if (ret == 0) {
 			priv->_agn.agg_tids_count++;
 			IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
@@ -2979,7 +2979,7 @@ static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
 		return ret;
 	case IEEE80211_AMPDU_TX_STOP:
 		IWL_DEBUG_HT(priv, "stop Tx\n");
-		ret = iwl_tx_agg_stop(priv, sta->addr, tid);
+		ret = iwlagn_tx_agg_stop(priv, sta->addr, tid);
 		if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
 			priv->_agn.agg_tids_count--;
 			IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
@@ -3738,7 +3738,7 @@ static void __devexit iwl_pci_remove(struct pci_dev *pdev)
 
 	if (priv->rxq.bd)
 		iwl_rx_queue_free(priv, &priv->rxq);
-	iwl_hw_txq_ctx_free(priv);
+	iwlagn_hw_txq_ctx_free(priv);
 
 	iwl_eeprom_free(priv);
 

drivers/net/wireless/iwlwifi/iwl-agn.h

@@ -113,5 +113,22 @@ 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);
+
+/* tx */
+int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb);
+int iwlagn_tx_agg_start(struct iwl_priv *priv,
+			const u8 *ra, u16 tid, u16 *ssn);
+int iwlagn_tx_agg_stop(struct iwl_priv *priv , const u8 *ra, u16 tid);
+int iwlagn_txq_check_empty(struct iwl_priv *priv,
+			   int sta_id, u8 tid, int txq_id);
+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_reset(struct iwl_priv *priv);
+void iwlagn_txq_ctx_stop(struct iwl_priv *priv);
 
 #endif /* __iwl_agn_h__ */

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

@@ -265,57 +265,6 @@ void iwl_hw_detect(struct iwl_priv *priv)
 }
 EXPORT_SYMBOL(iwl_hw_detect);
 
-int iwl_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);
-	priv->cfg->ops->lib->apm_ops.init(priv);
-
-	/* Set interrupt coalescing calibration timer to default (512 usecs) */
-	iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_CALIB_TIMEOUT_DEF);
-
-	spin_unlock_irqrestore(&priv->lock, flags);
-
-	ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
-
-	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
-		iwl_rx_queue_reset(priv, rxq);
-
-	iwl_rx_replenish(priv);
-
-	iwl_rx_init(priv, rxq);
-
-	spin_lock_irqsave(&priv->lock, flags);
-
-	rxq->need_update = 1;
-	iwl_rx_queue_update_write_ptr(priv, rxq);
-
-	spin_unlock_irqrestore(&priv->lock, flags);
-
-	/* Allocate and init all Tx and Command queues */
-	ret = iwl_txq_ctx_reset(priv);
-	if (ret)
-		return ret;
-
-	set_bit(STATUS_INIT, &priv->status);
-
-	return 0;
-}
-EXPORT_SYMBOL(iwl_hw_nic_init);
-
 /*
  * QoS  support
 */

drivers/net/wireless/iwlwifi/iwl-core.h

@@ -336,7 +336,6 @@ void iwl_irq_handle_error(struct iwl_priv *priv);
 void iwl_configure_filter(struct ieee80211_hw *hw,
 			  unsigned int changed_flags,
 			  unsigned int *total_flags, u64 multicast);
-int iwl_hw_nic_init(struct iwl_priv *priv);
 int iwl_set_hw_params(struct iwl_priv *priv);
 bool iwl_is_monitor_mode(struct iwl_priv *priv);
 void iwl_post_associate(struct iwl_priv *priv);
@@ -426,15 +425,12 @@ int iwl_rx_queue_alloc(struct iwl_priv *priv);
 void iwl_rx_handle(struct iwl_priv *priv);
 void iwl_rx_queue_update_write_ptr(struct iwl_priv *priv,
 				  struct iwl_rx_queue *q);
-void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 void iwl_rx_replenish(struct iwl_priv *priv);
 void iwl_rx_replenish_now(struct iwl_priv *priv);
-int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 void iwl_rx_queue_restock(struct iwl_priv *priv);
 int iwl_rx_queue_space(const struct iwl_rx_queue *q);
 void iwl_rx_allocate(struct iwl_priv *priv, gfp_t priority);
 void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);
-int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index);
 /* Handlers */
 void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
 			       struct iwl_rx_mem_buffer *rxb);
@@ -455,13 +451,10 @@ void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);
 /*****************************************************
 * TX
 ******************************************************/
-int iwl_txq_ctx_reset(struct iwl_priv *priv);
 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq);
 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 				 struct iwl_tx_queue *txq,
 				 dma_addr_t addr, u16 len, u8 reset, u8 pad);
-int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb);
-void iwl_hw_txq_ctx_free(struct iwl_priv *priv);
 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
 			 struct iwl_tx_queue *txq);
 void iwl_free_tfds_in_queue(struct iwl_priv *priv,
@@ -470,9 +463,6 @@ 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_free(struct iwl_priv *priv, int txq_id);
-int iwl_tx_agg_start(struct iwl_priv *priv, const u8 *ra, u16 tid, u16 *ssn);
-int iwl_tx_agg_stop(struct iwl_priv *priv , const u8 *ra, u16 tid);
-int iwl_txq_check_empty(struct iwl_priv *priv, int sta_id, u8 tid, int txq_id);
 /*****************************************************
  * TX power
  ****************************************************/
@@ -689,8 +679,6 @@ extern void iwl_rx_reply_rx(struct iwl_priv *priv,
 		struct iwl_rx_mem_buffer *rxb);
 extern void iwl_rx_reply_rx_phy(struct iwl_priv *priv,
 				    struct iwl_rx_mem_buffer *rxb);
-void iwl_rx_reply_compressed_ba(struct iwl_priv *priv,
-					   struct iwl_rx_mem_buffer *rxb);
 void iwl_apm_stop(struct iwl_priv *priv);
 int iwl_apm_init(struct iwl_priv *priv);
 

drivers/net/wireless/iwlwifi/iwl-devtrace.c

@@ -35,6 +35,7 @@ EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_iowrite8);
 EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_ioread32);
 EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_iowrite32);
 EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_rx);
+EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_tx);
 EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_ucode_event);
 EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_ucode_error);
 EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_ucode_cont_event);

drivers/net/wireless/iwlwifi/iwl-rx.c

@@ -395,86 +395,6 @@ int iwl_rx_queue_alloc(struct iwl_priv *priv)
 }
 EXPORT_SYMBOL(iwl_rx_queue_alloc);
 
-void iwl_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) {
-			pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
-				PAGE_SIZE << priv->hw_params.rx_page_order,
-				PCI_DMA_FROMDEVICE);
-			__iwl_free_pages(priv, rxq->pool[i].page);
-			rxq->pool[i].page = NULL;
-		}
-		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;
-	spin_unlock_irqrestore(&rxq->lock, flags);
-}
-
-int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
-{
-	u32 rb_size;
-	const u32 rfdnlog = RX_QUEUE_SIZE_LOG; /* 256 RBDs */
-	u32 rb_timeout = 0; /* FIXME: RX_RB_TIMEOUT for all devices? */
-
-	if (!priv->cfg->use_isr_legacy)
-		rb_timeout = RX_RB_TIMEOUT;
-
-	if (priv->cfg->mod_params->amsdu_size_8K)
-		rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K;
-	else
-		rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K;
-
-	/* Stop Rx DMA */
-	iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0);
-
-	/* Reset driver's Rx queue write index */
-	iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_WPTR_REG, 0);
-
-	/* Tell device where to find RBD circular buffer in DRAM */
-	iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_BASE_REG,
-			   (u32)(rxq->dma_addr >> 8));
-
-	/* Tell device where in DRAM to update its Rx status */
-	iwl_write_direct32(priv, FH_RSCSR_CHNL0_STTS_WPTR_REG,
-			   rxq->rb_stts_dma >> 4);
-
-	/* Enable Rx DMA
-	 * FH_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY is set because of HW bug in
-	 *      the credit mechanism in 5000 HW RX FIFO
-	 * Direct rx interrupts to hosts
-	 * Rx buffer size 4 or 8k
-	 * RB timeout 0x10
-	 * 256 RBDs
-	 */
-	iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG,
-			   FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL |
-			   FH_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY |
-			   FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL |
-			   FH_RCSR_CHNL0_RX_CONFIG_SINGLE_FRAME_MSK |
-			   rb_size|
-			   (rb_timeout << FH_RCSR_RX_CONFIG_REG_IRQ_RBTH_POS)|
-			   (rfdnlog << FH_RCSR_RX_CONFIG_RBDCB_SIZE_POS));
-
-	/* Set interrupt coalescing timer to default (2048 usecs) */
-	iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_TIMEOUT_DEF);
-
-	return 0;
-}
-
 int iwl_rxq_stop(struct iwl_priv *priv)
 {
 

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

@@ -1395,6 +1395,7 @@ void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
 
 	iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
 }
+EXPORT_SYMBOL(iwl_sta_modify_sleep_tx_count);
 
 int iwl_mac_sta_remove(struct ieee80211_hw *hw,
 			       struct ieee80211_vif *vif,