iwlagn: move Keep Warm to transport layer

It is relevant for PCIe only.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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

@@ -1239,7 +1239,6 @@ struct iwl_priv {
 	/* Tx DMA processing queues */
 	struct iwl_tx_queue *txq;
 	unsigned long txq_ctx_active_msk;
-	struct iwl_dma_ptr  kw;	/* keep warm address */
 
 	/* counts mgmt, ctl, and data packets */
 	struct traffic_stats tx_stats;

drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h

@@ -95,6 +95,7 @@ struct iwl_rx_queue {
  * @trans: pointer to the generic transport area
  * @scd_base_addr: scheduler sram base address in SRAM
  * @scd_bc_tbls: pointer to the byte count table of the scheduler
+ * @kw: keep warm address
  */
 struct iwl_trans_pcie {
 	struct iwl_rx_queue rxq;
@@ -115,6 +116,7 @@ struct iwl_trans_pcie {
 	u32 inta_mask;
 	u32 scd_base_addr;
 	struct iwl_dma_ptr scd_bc_tbls;
+	struct iwl_dma_ptr kw;
 };
 
 #define IWL_TRANS_GET_PCIE_TRANS(_iwl_trans) \

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

@@ -489,7 +489,7 @@ static void iwl_trans_pcie_tx_free(struct iwl_trans *trans)
 	kfree(priv->txq);
 	priv->txq = NULL;
 
-	iwlagn_free_dma_ptr(trans, &priv->kw);
+	iwlagn_free_dma_ptr(trans, &trans_pcie->kw);
 
 	iwlagn_free_dma_ptr(trans, &trans_pcie->scd_bc_tbls);
 }
@@ -527,7 +527,7 @@ static int iwl_trans_tx_alloc(struct iwl_trans *trans)
 	}
 
 	/* Alloc keep-warm buffer */
-	ret = iwlagn_alloc_dma_ptr(trans, &priv->kw, IWL_KW_SIZE);
+	ret = iwlagn_alloc_dma_ptr(trans, &trans_pcie->kw, IWL_KW_SIZE);
 	if (ret) {
 		IWL_ERR(trans, "Keep Warm allocation failed\n");
 		goto error;
@@ -567,6 +567,8 @@ static int iwl_tx_init(struct iwl_trans *trans)
 	unsigned long flags;
 	bool alloc = false;
 	struct iwl_priv *priv = priv(trans);
+	struct iwl_trans_pcie *trans_pcie =
+		IWL_TRANS_GET_PCIE_TRANS(trans);
 
 	if (!priv->txq) {
 		ret = iwl_trans_tx_alloc(trans);
@@ -581,7 +583,7 @@ static int iwl_tx_init(struct iwl_trans *trans)
 	iwl_write_prph(priv, 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);
+	iwl_write_direct32(priv, FH_KW_MEM_ADDR_REG, trans_pcie->kw.dma >> 4);
 
 	spin_unlock_irqrestore(&trans->shrd->lock, flags);