From: Biju Das <biju.das.jz@...>

commit 2458b8edb887108b8a6aae567b01e5e2a73bd8d8 upstream.

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@...>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...>
Reviewed-by: Sergey Shtylyov <s.shtylyov@...>
Signed-off-by: Jakub Kicinski <kuba@...>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...>
---
drivers/net/ethernet/renesas/ravb_main.c | 28 ++++++++++++++++++++----
1 file changed, 24 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 02e8a7761822..6f9065212791 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -234,10 +234,30 @@ 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;
@@ -2187,7 +2207,7 @@ 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,
@@ -2212,7 +2232,7 @@ 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,
--
2.17.1