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authorJoao Pinto <Joao.Pinto@synopsys.com>2017-03-10 18:24:59 +0000
committerDavid S. Miller <davem@davemloft.net>2017-03-12 23:41:04 -0700
commit19d9187317979cf0c25f67017d2676149abc46b2 (patch)
tree5107036a3df1310fc8e7d58ef545d9905591368e /drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
parentad5a87d7e3c5fcea987728027a3fae2c2f067173 (diff)
downloadlinux-stericsson-19d9187317979cf0c25f67017d2676149abc46b2.tar.gz
net: stmmac: configuration of CBS in case of a TX AVB queue
This patch adds the configuration of the AVB Credit-Based Shaper. Signed-off-by: Joao Pinto <jpinto@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac_main.c')
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/stmmac_main.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 2449487be534..915636ff2fc1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1671,6 +1671,31 @@ static void stmmac_set_tx_queue_weight(struct stmmac_priv *priv)
}
/**
+ * stmmac_configure_cbs - Configure CBS in TX queue
+ * @priv: driver private structure
+ * Description: It is used for configuring CBS in AVB TX queues
+ */
+static void stmmac_configure_cbs(struct stmmac_priv *priv)
+{
+ u32 tx_queues_count = priv->plat->tx_queues_to_use;
+ u32 mode_to_use;
+ u32 queue;
+
+ for (queue = 0; queue < tx_queues_count; queue++) {
+ mode_to_use = priv->plat->tx_queues_cfg[queue].mode_to_use;
+ if (mode_to_use == MTL_QUEUE_DCB)
+ continue;
+
+ priv->hw->mac->config_cbs(priv->hw,
+ priv->plat->tx_queues_cfg[queue].send_slope,
+ priv->plat->tx_queues_cfg[queue].idle_slope,
+ priv->plat->tx_queues_cfg[queue].high_credit,
+ priv->plat->tx_queues_cfg[queue].low_credit,
+ queue);
+ }
+}
+
+/**
* 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
@@ -1710,6 +1735,10 @@ static void stmmac_mtl_configuration(struct stmmac_priv *priv)
priv->hw->mac->prog_mtl_tx_algorithms(priv->hw,
priv->plat->tx_sched_algorithm);
+ /* Configure CBS in AVB TX queues */
+ if (tx_queues_count > 1 && priv->hw->mac->config_cbs)
+ stmmac_configure_cbs(priv);
+
/* 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);