iwlwifi: pcie: allow the op_mode to freeze the stuck queue timer

[karo-tx-linux.git] / drivers / net / wireless / iwlwifi / iwl-trans.h

diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h
index 542a6810c81cba704b37a28235678a685ecf47ab..11ac5c58527f6f92b5980b15f43defa9ad5822c9 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.h
@@ -458,6 +458,8 @@ struct iwl_trans_txq_scd_cfg {
  * @txq_disable: de-configure a Tx queue to send AMPDUs
  *     Must be atomic
  * @wait_tx_queue_empty: wait until tx queues are empty. May sleep.
+ * @freeze_txq_timer: prevents the timer of the queue from firing until the
+ *     queue is set to awake. Must be atomic.
  * @dbgfs_register: add the dbgfs files under this directory. Files will be
  *     automatically deleted.
  * @write8: write a u8 to a register at offset ofs from the BAR
@@ -517,6 +519,8 @@ struct iwl_trans_ops {
 
        int (*dbgfs_register)(struct iwl_trans *trans, struct dentry* dir);
        int (*wait_tx_queue_empty)(struct iwl_trans *trans, u32 txq_bm);
+       void (*freeze_txq_timer)(struct iwl_trans *trans, unsigned long txqs,
+                                bool freeze);
 
        void (*write8)(struct iwl_trans *trans, u32 ofs, u8 val);
        void (*write32)(struct iwl_trans *trans, u32 ofs, u32 val);
@@ -873,6 +877,17 @@ void iwl_trans_ac_txq_enable(struct iwl_trans *trans, int queue, int fifo,
        iwl_trans_txq_enable_cfg(trans, queue, 0, &cfg, queue_wdg_timeout);
 }
 
+static inline void iwl_trans_freeze_txq_timer(struct iwl_trans *trans,
+                                             unsigned long txqs,
+                                             bool freeze)
+{
+       if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
+               IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
+
+       if (trans->ops->freeze_txq_timer)
+               trans->ops->freeze_txq_timer(trans, txqs, freeze);
+}
+
 static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans,
                                                u32 txqs)
 {