Re: [PATCH net-next 11/18] ravb: Factorise ravb_ring_init function
From: Sergei Shtylyov <hidden>
Date: 2021-07-29 18:53:56
Also in:
linux-renesas-soc
On 7/22/21 5:13 PM, Biju Das wrote:
The ravb_ring_init function uses extended descriptor in rx for R-Car and normal descriptor for RZ/G2L. Factorise rx ring buffer allocation so that it can support later SoC.
In this case I think you factored out the function in question... but my ENglish is possibly too weak. :-)
quoted hunk ↗ jump to hunk
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 | 1 + drivers/net/ethernet/renesas/ravb_main.c | 20 +++++++++++++++----- 2 files changed, 16 insertions(+), 5 deletions(-)diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h index a3258c5d0c3d..d82bfa6e57c1 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h@@ -991,6 +991,7 @@ enum ravb_chip_id { struct ravb_ops { void (*ring_free)(struct net_device *ndev, int q); void (*ring_format)(struct net_device *ndev, int q); + bool (*alloc_rx_desc)(struct net_device *ndev, int q);
Aha, rx_ appears at last! :-)
quoted hunk ↗ jump to hunk
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index c23f0d420c70..3d0f6598b936 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c@@ -384,6 +384,19 @@ static void ravb_ring_format(struct net_device *ndev, int q) } /* Init skb and descriptor buffer for Ethernet AVB */ +static bool ravb_alloc_rx_desc(struct net_device *ndev, int q)
Why *bool*? I think we shold just return a pointer allocated.
quoted hunk ↗ jump to hunk
+{ + struct ravb_private *priv = netdev_priv(ndev); + 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]; +} + static int ravb_ring_init(struct net_device *ndev, int q) { struct ravb_private *priv = netdev_priv(ndev);@@ -418,11 +431,7 @@ 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->ravb_ops->alloc_rx_desc(ndev, q)) goto error; priv->dirty_rx[q] = 0;@@ -2008,6 +2017,7 @@ static int ravb_mdio_release(struct ravb_private *priv) static const struct ravb_ops ravb_gen3_ops = { .ring_free = ravb_ring_free_rx, .ring_format = ravb_ring_format_rx, + .alloc_rx_desc = ravb_alloc_rx_desc, }; static const struct ravb_drv_data ravb_gen3_data = {