net: stmmac: mapping mtl rx to dma channel
This patch adds the functionality of RX queue to dma channel mapping
based on configuration.
Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 43036da..e1d5fe7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1660,6 +1660,23 @@
}
/**
+ * stmmac_rx_queue_dma_chan_map - Map RX queue to RX dma channel
+ * @priv: driver private structure
+ * Description: It is used for mapping RX queues to RX dma channels
+ */
+static void stmmac_rx_queue_dma_chan_map(struct stmmac_priv *priv)
+{
+ u32 rx_queues_count = priv->plat->rx_queues_to_use;
+ u32 queue;
+ u32 chan;
+
+ for (queue = 0; queue < rx_queues_count; queue++) {
+ chan = priv->plat->rx_queues_cfg[queue].chan;
+ priv->hw->mac->map_mtl_to_dma(priv->hw, queue, chan);
+ }
+}
+
+/**
* stmmac_mtl_configuration - Configure MTL
* @priv: driver private structure
* Description: It is used for configurring MTL
@@ -1682,6 +1699,10 @@
priv->hw->mac->prog_mtl_tx_algorithms(priv->hw,
priv->plat->tx_sched_algorithm);
+ /* Map RX MTL to DMA channels */
+ if (rx_queues_count > 1 && priv->hw->mac->map_mtl_to_dma)
+ stmmac_rx_queue_dma_chan_map(priv);
+
/* Enable MAC RX Queues */
if (rx_queues_count > 1 && priv->hw->mac->rx_queue_enable)
stmmac_mac_enable_rx_queues(priv);