iwlagn: add kick_nic API to transport layer

kick_nic means to remove the RESET bit from the embedded CPU

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.guy@intel.com>

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

@@ -494,8 +494,7 @@ int iwlagn_load_ucode_wait_alive(struct iwl_priv *priv,
 		return ret;
 	}
 
-	/* Remove all resets to allow NIC to operate */
+	trans_kick_nic(priv);
-	iwl_write32(priv, CSR_RESET, 0);
 
 	/*
 	 * Some things may run in the background now, but we

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

@@ -1245,6 +1245,7 @@ struct iwl_trans;
  * @send_cmd_pdu:send a host command: flags can be CMD_*
  * @get_tx_cmd: returns a pointer to a new Tx cmd for the upper layer use
  * @tx: send an skb
+ * @kick_nic: remove the RESET from the embedded CPU and let it run
  * @sync_irq: the upper layer will typically disable interrupt and call this
  *            handler. After this handler returns, it is guaranteed that all
  *            the ISR / tasklet etc... have finished running and the transport
@@ -1271,6 +1272,8 @@ struct iwl_trans_ops {
 		struct iwl_tx_cmd *tx_cmd, int txq_id, __le16 fc, bool ampdu,
 		struct iwl_rxon_context *ctx);
 
+	void (*kick_nic)(struct iwl_priv *priv);
+
 	void (*sync_irq)(struct iwl_priv *priv);
 	void (*free)(struct iwl_priv *priv);
 };

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

@@ -952,6 +952,12 @@ static int iwl_trans_tx(struct iwl_priv *priv, struct sk_buff *skb,
 	return 0;
 }
 
+static void iwl_trans_kick_nic(struct iwl_priv *priv)
+{
+	/* Remove all resets to allow NIC to operate */
+	iwl_write32(priv, CSR_RESET, 0);
+}
+
 static void iwl_trans_sync_irq(struct iwl_priv *priv)
 {
 	/* wait to make sure we flush pending tasklet*/
@@ -980,6 +986,7 @@ static const struct iwl_trans_ops trans_ops = {
 
 	.get_tx_cmd = iwl_trans_get_tx_cmd,
 	.tx = iwl_trans_tx,
+	.kick_nic = iwl_trans_kick_nic,
 
 	.sync_irq = iwl_trans_sync_irq,
 	.free = iwl_trans_free,

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

@@ -119,6 +119,11 @@ static inline int trans_tx(struct iwl_priv *priv, struct sk_buff *skb,
 	return priv->trans.ops->tx(priv, skb, tx_cmd, txq_id, fc, ampdu, ctx);
 }
 
+static inline void trans_kick_nic(struct iwl_priv *priv)
+{
+	priv->trans.ops->kick_nic(priv);
+}
+
 static inline void trans_sync_irq(struct iwl_priv *priv)
 {
 	priv->trans.ops->sync_irq(priv);