ravb: Fillup ravb_rx_ring_free_gbeth() stub

Fillup ravb_rx_ring_free_gbeth() function to support RZ/G2L.

This patch also renames ravb_rx_ring_free to ravb_rx_ring_free_rcar
to be consistent with the naming convention used in sh_eth driver.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index c6bab0d..1ea25a8 100644 (file)
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -236,10 +236,30 @@ static int ravb_tx_free(struct net_device *ndev, int q, bool free_txed_only)
 
 static void ravb_rx_ring_free_gbeth(struct net_device *ndev, int q)
 {
-       /* Place holder */
+       struct ravb_private *priv = netdev_priv(ndev);
+       unsigned int ring_size;
+       unsigned int i;
+
+       if (!priv->gbeth_rx_ring)
+               return;
+
+       for (i = 0; i < priv->num_rx_ring[q]; i++) {
+               struct ravb_rx_desc *desc = &priv->gbeth_rx_ring[i];
+
+               if (!dma_mapping_error(ndev->dev.parent,
+                                      le32_to_cpu(desc->dptr)))
+                       dma_unmap_single(ndev->dev.parent,
+                                        le32_to_cpu(desc->dptr),
+                                        GBETH_RX_BUFF_MAX,
+                                        DMA_FROM_DEVICE);
+       }
+       ring_size = sizeof(struct ravb_rx_desc) * (priv->num_rx_ring[q] + 1);
+       dma_free_coherent(ndev->dev.parent, ring_size, priv->gbeth_rx_ring,
+                         priv->rx_desc_dma[q]);
+       priv->gbeth_rx_ring = NULL;
 }
 
-static void ravb_rx_ring_free(struct net_device *ndev, int q)
+static void ravb_rx_ring_free_rcar(struct net_device *ndev, int q)
 {
        struct ravb_private *priv = netdev_priv(ndev);
        unsigned int ring_size;
@@ -2189,7 +2209,7 @@ static int ravb_mdio_release(struct ravb_private *priv)
 }
 
 static const struct ravb_hw_info ravb_gen3_hw_info = {
-       .rx_ring_free = ravb_rx_ring_free,
+       .rx_ring_free = ravb_rx_ring_free_rcar,
        .rx_ring_format = ravb_rx_ring_format,
        .alloc_rx_desc = ravb_alloc_rx_desc_rcar,
        .receive = ravb_rcar_rx,
@@ -2214,7 +2234,7 @@ static const struct ravb_hw_info ravb_gen3_hw_info = {
 };
 
 static const struct ravb_hw_info ravb_gen2_hw_info = {
-       .rx_ring_free = ravb_rx_ring_free,
+       .rx_ring_free = ravb_rx_ring_free_rcar,
        .rx_ring_format = ravb_rx_ring_format,
        .alloc_rx_desc = ravb_alloc_rx_desc_rcar,
        .receive = ravb_rcar_rx,