diff options
| author |   Biju Das <biju.das.jz@bp.renesas.com> | 2021-08-25 08:01:48 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2021-08-25 11:18:17 +0100 |
| commit | 7870a41848abf8ae634e2de54effbbf32d2a472d (patch) | |
| tree | 14b1fa3dd6be62f123ee7739d8cea2d2da4d3c3f /drivers/net/ethernet/renesas | |
| parent | ravb: Factorise ravb_ring_format function (diff) | |
| download | linux-dev-7870a41848abf8ae634e2de54effbbf32d2a472d.tar.xz linux-dev-7870a41848abf8ae634e2de54effbbf32d2a472d.zip | |
ravb: Factorise ravb_ring_init function
The ravb_ring_init function uses an extended descriptor in RX for
R-Car and normal descriptor for RZ/G2L. Add a helper function
for RX ring buffer allocation to 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>
Diffstat (limited to 'drivers/net/ethernet/renesas')
| -rw-r--r-- | drivers/net/ethernet/renesas/ravb.h | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/renesas/ravb_main.c | 21 |
2 files changed, 17 insertions, 5 deletions
diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h index dbf114d2ceef..39df045b1a0b 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h @@ -982,6 +982,7 @@ struct ravb_ptp { struct ravb_hw_info { void (*rx_ring_free)(struct net_device *ndev, int q); void (*rx_ring_format)(struct net_device *ndev, int q); + void *(*alloc_rx_desc)(struct net_device *ndev, int q); const char (*gstrings_stats)[ETH_GSTRING_LEN]; size_t gstrings_size; netdev_features_t net_hw_features; diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index e52e36ccd1c6..148c974499b4 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -355,6 +355,19 @@ static void ravb_ring_format(struct net_device *ndev, int q) desc->dptr = cpu_to_le32((u32)priv->tx_desc_dma[q]); } +static void *ravb_alloc_rx_desc(struct net_device *ndev, int q) +{ + struct ravb_private *priv = netdev_priv(ndev); + unsigned int ring_size; + + ring_size = sizeof(struct ravb_ex_rx_desc) * (priv->num_rx_ring[q] + 1); + + priv->rx_ring[q] = dma_alloc_coherent(ndev->dev.parent, ring_size, + &priv->rx_desc_dma[q], + GFP_KERNEL); + return priv->rx_ring[q]; +} + /* Init skb and descriptor buffer for Ethernet AVB */ static int ravb_ring_init(struct net_device *ndev, int q) { @@ -390,11 +403,7 @@ static int ravb_ring_init(struct net_device *ndev, int q) } /* Allocate all RX descriptors. */ - ring_size = sizeof(struct ravb_ex_rx_desc) * (priv->num_rx_ring[q] + 1); - priv->rx_ring[q] = dma_alloc_coherent(ndev->dev.parent, ring_size, - &priv->rx_desc_dma[q], - GFP_KERNEL); - if (!priv->rx_ring[q]) + if (!info->alloc_rx_desc(ndev, q)) goto error; priv->dirty_rx[q] = 0; @@ -1959,6 +1968,7 @@ 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_format = ravb_rx_ring_format, + .alloc_rx_desc = ravb_alloc_rx_desc, .gstrings_stats = ravb_gstrings_stats, .gstrings_size = sizeof(ravb_gstrings_stats), .net_hw_features = NETIF_F_RXCSUM, @@ -1974,6 +1984,7 @@ 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_format = ravb_rx_ring_format, + .alloc_rx_desc = ravb_alloc_rx_desc, .gstrings_stats = ravb_gstrings_stats, .gstrings_size = sizeof(ravb_gstrings_stats), .net_hw_features = NETIF_F_RXCSUM, |