ravb: Fillup ravb_rx_ring_format_gbeth() stub

Fillup ravb_rx_ring_format_gbeth() function to support RZ/G2L.

This patch also renames ravb_rx_ring_format to ravb_rx_ring_format_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.h b/drivers/net/ethernet/renesas/ravb.h
index ed771ea..e9de3f8 100644 (file)
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -970,6 +970,7 @@ enum CXR31_BIT {
 #define RX_BUF_SZ      (2048 - ETH_FCS_LEN + sizeof(__sum16))
 
 #define GBETH_RX_BUFF_MAX 8192
+#define GBETH_RX_DESC_DATA_SIZE 4080
 
 struct ravb_tstamp_skb {
        struct list_head list;

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 1ea25a8..f7ce9b6 100644 (file)
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -327,10 +327,36 @@ static void ravb_ring_free(struct net_device *ndev, int q)
 
 static void ravb_rx_ring_format_gbeth(struct net_device *ndev, int q)
 {
-       /* Place holder */
+       struct ravb_private *priv = netdev_priv(ndev);
+       struct ravb_rx_desc *rx_desc;
+       unsigned int rx_ring_size;
+       dma_addr_t dma_addr;
+       unsigned int i;
+
+       rx_ring_size = sizeof(*rx_desc) * priv->num_rx_ring[q];
+       memset(priv->gbeth_rx_ring, 0, rx_ring_size);
+       /* Build RX ring buffer */
+       for (i = 0; i < priv->num_rx_ring[q]; i++) {
+               /* RX descriptor */
+               rx_desc = &priv->gbeth_rx_ring[i];
+               rx_desc->ds_cc = cpu_to_le16(GBETH_RX_DESC_DATA_SIZE);
+               dma_addr = dma_map_single(ndev->dev.parent, priv->rx_skb[q][i]->data,
+                                         GBETH_RX_BUFF_MAX,
+                                         DMA_FROM_DEVICE);
+               /* We just set the data size to 0 for a failed mapping which
+                * should prevent DMA from happening...
+                */
+               if (dma_mapping_error(ndev->dev.parent, dma_addr))
+                       rx_desc->ds_cc = cpu_to_le16(0);
+               rx_desc->dptr = cpu_to_le32(dma_addr);
+               rx_desc->die_dt = DT_FEMPTY;
+       }
+       rx_desc = &priv->gbeth_rx_ring[i];
+       rx_desc->dptr = cpu_to_le32((u32)priv->rx_desc_dma[q]);
+       rx_desc->die_dt = DT_LINKFIX; /* type */
 }
 
-static void ravb_rx_ring_format(struct net_device *ndev, int q)
+static void ravb_rx_ring_format_rcar(struct net_device *ndev, int q)
 {
        struct ravb_private *priv = netdev_priv(ndev);
        struct ravb_ex_rx_desc *rx_desc;
@@ -2210,7 +2236,7 @@ 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_rcar,
-       .rx_ring_format = ravb_rx_ring_format,
+       .rx_ring_format = ravb_rx_ring_format_rcar,
        .alloc_rx_desc = ravb_alloc_rx_desc_rcar,
        .receive = ravb_rcar_rx,
        .set_rate = ravb_set_rate_rcar,
@@ -2235,7 +2261,7 @@ 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_rcar,
-       .rx_ring_format = ravb_rx_ring_format,
+       .rx_ring_format = ravb_rx_ring_format_rcar,
        .alloc_rx_desc = ravb_alloc_rx_desc_rcar,
        .receive = ravb_rcar_rx,
        .set_rate = ravb_set_rate_rcar,