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path: root/drivers/net/wireless/iwlwifi/iwl-tx.c
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-tx.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-tx.c78
1 files changed, 46 insertions, 32 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c
index 073b6ce6141c..277c9175dcf6 100644
--- a/drivers/net/wireless/iwlwifi/iwl-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-tx.c
@@ -84,7 +84,23 @@ void iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq)
}
txq->need_update = 0;
}
-EXPORT_SYMBOL(iwl_txq_update_write_ptr);
+
+/**
+ * iwl_tx_queue_unmap - Unmap any remaining DMA mappings and free skb's
+ */
+void iwl_tx_queue_unmap(struct iwl_priv *priv, int txq_id)
+{
+ struct iwl_tx_queue *txq = &priv->txq[txq_id];
+ struct iwl_queue *q = &txq->q;
+
+ if (q->n_bd == 0)
+ return;
+
+ while (q->write_ptr != q->read_ptr) {
+ priv->cfg->ops->lib->txq_free_tfd(priv, txq);
+ q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd);
+ }
+}
/**
* iwl_tx_queue_free - Deallocate DMA queue.
@@ -97,17 +113,10 @@ EXPORT_SYMBOL(iwl_txq_update_write_ptr);
void iwl_tx_queue_free(struct iwl_priv *priv, int txq_id)
{
struct iwl_tx_queue *txq = &priv->txq[txq_id];
- struct iwl_queue *q = &txq->q;
struct device *dev = &priv->pci_dev->dev;
int i;
- if (q->n_bd == 0)
- return;
-
- /* first, empty all BD's */
- for (; q->write_ptr != q->read_ptr;
- q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
- priv->cfg->ops->lib->txq_free_tfd(priv, txq);
+ iwl_tx_queue_unmap(priv, txq_id);
/* De-alloc array of command/tx buffers */
for (i = 0; i < TFD_TX_CMD_SLOTS; i++)
@@ -131,42 +140,35 @@ void iwl_tx_queue_free(struct iwl_priv *priv, int txq_id)
/* 0-fill queue descriptor structure */
memset(txq, 0, sizeof(*txq));
}
-EXPORT_SYMBOL(iwl_tx_queue_free);
/**
- * iwl_cmd_queue_free - Deallocate DMA queue.
- * @txq: Transmit queue to deallocate.
- *
- * Empty queue by removing and destroying all BD's.
- * Free all buffers.
- * 0-fill, but do not free "txq" descriptor structure.
+ * iwl_cmd_queue_unmap - Unmap any remaining DMA mappings from command queue
*/
-void iwl_cmd_queue_free(struct iwl_priv *priv)
+void iwl_cmd_queue_unmap(struct iwl_priv *priv)
{
struct iwl_tx_queue *txq = &priv->txq[priv->cmd_queue];
struct iwl_queue *q = &txq->q;
- struct device *dev = &priv->pci_dev->dev;
int i;
bool huge = false;
if (q->n_bd == 0)
return;
- for (; q->read_ptr != q->write_ptr;
- q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
+ while (q->read_ptr != q->write_ptr) {
/* we have no way to tell if it is a huge cmd ATM */
i = get_cmd_index(q, q->read_ptr, 0);
- if (txq->meta[i].flags & CMD_SIZE_HUGE) {
+ if (txq->meta[i].flags & CMD_SIZE_HUGE)
huge = true;
- continue;
- }
+ else
+ pci_unmap_single(priv->pci_dev,
+ dma_unmap_addr(&txq->meta[i], mapping),
+ dma_unmap_len(&txq->meta[i], len),
+ PCI_DMA_BIDIRECTIONAL);
- pci_unmap_single(priv->pci_dev,
- dma_unmap_addr(&txq->meta[i], mapping),
- dma_unmap_len(&txq->meta[i], len),
- PCI_DMA_BIDIRECTIONAL);
+ q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd);
}
+
if (huge) {
i = q->n_window;
pci_unmap_single(priv->pci_dev,
@@ -174,6 +176,23 @@ void iwl_cmd_queue_free(struct iwl_priv *priv)
dma_unmap_len(&txq->meta[i], len),
PCI_DMA_BIDIRECTIONAL);
}
+}
+
+/**
+ * iwl_cmd_queue_free - Deallocate DMA queue.
+ * @txq: Transmit queue to deallocate.
+ *
+ * Empty queue by removing and destroying all BD's.
+ * Free all buffers.
+ * 0-fill, but do not free "txq" descriptor structure.
+ */
+void iwl_cmd_queue_free(struct iwl_priv *priv)
+{
+ struct iwl_tx_queue *txq = &priv->txq[priv->cmd_queue];
+ struct device *dev = &priv->pci_dev->dev;
+ int i;
+
+ iwl_cmd_queue_unmap(priv);
/* De-alloc array of command/tx buffers */
for (i = 0; i <= TFD_CMD_SLOTS; i++)
@@ -193,7 +212,6 @@ void iwl_cmd_queue_free(struct iwl_priv *priv)
/* 0-fill queue descriptor structure */
memset(txq, 0, sizeof(*txq));
}
-EXPORT_SYMBOL(iwl_cmd_queue_free);
/*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
* DMA services
@@ -233,7 +251,6 @@ int iwl_queue_space(const struct iwl_queue *q)
s = 0;
return s;
}
-EXPORT_SYMBOL(iwl_queue_space);
/**
@@ -384,7 +401,6 @@ out_free_arrays:
return -ENOMEM;
}
-EXPORT_SYMBOL(iwl_tx_queue_init);
void iwl_tx_queue_reset(struct iwl_priv *priv, struct iwl_tx_queue *txq,
int slots_num, u32 txq_id)
@@ -404,7 +420,6 @@ void iwl_tx_queue_reset(struct iwl_priv *priv, struct iwl_tx_queue *txq,
/* Tell device where to find queue */
priv->cfg->ops->lib->txq_init(priv, txq);
}
-EXPORT_SYMBOL(iwl_tx_queue_reset);
/*************** HOST COMMAND QUEUE FUNCTIONS *****/
@@ -641,4 +656,3 @@ void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
}
meta->flags = 0;
}
-EXPORT_SYMBOL(iwl_tx_cmd_complete);