[PATCH net-next 09/18] ravb: Factorise ravb_ring_free function
From: Biju Das <biju.das.jz@bp.renesas.com>
Date: 2021-07-22 14:15:03
Also in:
linux-renesas-soc
Subsystem:
networking drivers, renesas ethernet avb driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Niklas Söderlund, Linus Torvalds
Extended descriptor support in RX is available for R-Car where as it is a normal descriptor for RZ/G2L. 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> --- drivers/net/ethernet/renesas/ravb.h | 5 +++ drivers/net/ethernet/renesas/ravb_main.c | 49 ++++++++++++++++-------- 2 files changed, 37 insertions(+), 17 deletions(-)
diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index a474ed68db22..3a9cf6e8671a 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h@@ -988,7 +988,12 @@ enum ravb_chip_id { RCAR_GEN3, }; +struct ravb_ops { + void (*ring_free)(struct net_device *ndev, int q); +}; + struct ravb_drv_data { + const struct ravb_ops *ravb_ops; netdev_features_t net_features; netdev_features_t net_hw_features; const char (*gstrings_stats)[ETH_GSTRING_LEN];
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 4ef2565534d2..a3b8b243fd54 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c@@ -247,30 +247,39 @@ static int ravb_tx_free(struct net_device *ndev, int q, bool free_txed_only) } /* Free skb's and DMA buffers for Ethernet AVB */ -static void ravb_ring_free(struct net_device *ndev, int q) +static void ravb_ring_free_rx(struct net_device *ndev, int q) { struct ravb_private *priv = netdev_priv(ndev); - int num_tx_desc = priv->num_tx_desc; int ring_size; 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]; + 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; + 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; +} + +static void ravb_ring_free(struct net_device *ndev, int q) +{ + struct ravb_private *priv = netdev_priv(ndev); + const struct ravb_drv_data *info = priv->info; + int num_tx_desc = priv->num_tx_desc; + int ring_size; + int i; + + if (priv->rx_ring[q]) + info->ravb_ops->ring_free(ndev, q); if (priv->tx_ring[q]) { ravb_tx_free(ndev, q, false);
@@ -1987,7 +1996,12 @@ static int ravb_mdio_release(struct ravb_private *priv) return 0; } +static const struct ravb_ops ravb_gen3_ops = { + .ring_free = ravb_ring_free_rx, +}; + static const struct ravb_drv_data ravb_gen3_data = { + .ravb_ops = &ravb_gen3_ops, .net_features = NETIF_F_RXCSUM, .net_hw_features = NETIF_F_RXCSUM, .gstrings_stats = ravb_gstrings_stats,
@@ -2001,6 +2015,7 @@ static const struct ravb_drv_data ravb_gen3_data = { }; static const struct ravb_drv_data ravb_gen2_data = { + .ravb_ops = &ravb_gen3_ops, .net_features = NETIF_F_RXCSUM, .net_hw_features = NETIF_F_RXCSUM, .gstrings_stats = ravb_gstrings_stats,
--
2.17.1