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ravb: Factorise ravb_ring_free function

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R-Car uses extended descriptor in RX, whereas RZ/G2L uses normal
descriptor. Factorise ravb_ring_free function so that it can
support later SoC.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Biju Das 2021-08-25 08:01:46 +01:00 committed by David S. Miller
parent a69a3d094d
commit bf46b75784
2 changed files with 31 additions and 17 deletions
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1
drivers/net/ethernet/renesas/ravb.h
View File

@ -980,6 +980,7 @@ struct ravb_ptp {
};
struct ravb_hw_info {
void (*rx_ring_free)(struct net_device *ndev, int q);
const char (*gstrings_stats)[ETH_GSTRING_LEN];
size_t gstrings_size;
netdev_features_t net_hw_features;

47
drivers/net/ethernet/renesas/ravb_main.c
View File

@ -216,31 +216,42 @@ static int ravb_tx_free(struct net_device *ndev, int q, bool free_txed_only)
return free_num;
}
static void ravb_rx_ring_free(struct net_device *ndev, int q)
{
struct ravb_private *priv = netdev_priv(ndev);
unsigned int ring_size;
unsigned int i;
if (!priv->rx_ring[q])
return;
for (i = 0; i < priv->num_rx_ring[q]; i++) {
struct ravb_ex_rx_desc *desc = &priv->rx_ring[q][i];
if (!dma_mapping_error(ndev->dev.parent,
le32_to_cpu(desc->dptr)))
dma_unmap_single(ndev->dev.parent,
le32_to_cpu(desc->dptr),
RX_BUF_SZ,
DMA_FROM_DEVICE);
}
ring_size = sizeof(struct ravb_ex_rx_desc) *
(priv->num_rx_ring[q] + 1);
dma_free_coherent(ndev->dev.parent, ring_size, priv->rx_ring[q],
priv->rx_desc_dma[q]);
priv->rx_ring[q] = NULL;
}
/* Free skb's and DMA buffers for Ethernet AVB */
static void ravb_ring_free(struct net_device *ndev, int q)
{
struct ravb_private *priv = netdev_priv(ndev);
const struct ravb_hw_info *info = priv->info;
unsigned int num_tx_desc = priv->num_tx_desc;
unsigned int ring_size;
unsigned int i;
if (priv->rx_ring[q]) {
for (i = 0; i < priv->num_rx_ring[q]; i++) {
struct ravb_ex_rx_desc *desc = &priv->rx_ring[q][i];
if (!dma_mapping_error(ndev->dev.parent,
le32_to_cpu(desc->dptr)))
dma_unmap_single(ndev->dev.parent,
le32_to_cpu(desc->dptr),
RX_BUF_SZ,
DMA_FROM_DEVICE);
}
ring_size = sizeof(struct ravb_ex_rx_desc) *
(priv->num_rx_ring[q] + 1);
dma_free_coherent(ndev->dev.parent, ring_size, priv->rx_ring[q],
priv->rx_desc_dma[q]);
priv->rx_ring[q] = NULL;
}
info->rx_ring_free(ndev, q);
if (priv->tx_ring[q]) {
ravb_tx_free(ndev, q, false);
@ -1937,6 +1948,7 @@ 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,
.gstrings_stats = ravb_gstrings_stats,
.gstrings_size = sizeof(ravb_gstrings_stats),
.net_hw_features = NETIF_F_RXCSUM,
@ -1950,6 +1962,7 @@ 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,
.gstrings_stats = ravb_gstrings_stats,
.gstrings_size = sizeof(ravb_gstrings_stats),
.net_hw_features = NETIF_F_RXCSUM,