diff mbox series

[net-next,10/18] ravb: Factorise ravb_ring_format function

Message ID 20210722141351.13668-11-biju.das.jz@bp.renesas.com (mailing list archive)
State Superseded
Delegated to: Geert Uytterhoeven
Headers show
Series Add Gigabit Ethernet driver support | expand

Commit Message

Biju Das July 22, 2021, 2:13 p.m. UTC 
The ravb_ring_format function uses extended descriptor in rx for
R-Car where as it use normal descriptor for RZ/G2L. Factorise
rx ring buffer buildup to extend the support for 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      |  1 +
 drivers/net/ethernet/renesas/ravb_main.c | 34 +++++++++++++++---------
 2 files changed, 23 insertions(+), 12 deletions(-)

Comments

Sergey Shtylyov July 29, 2021, 6:30 p.m. UTC | #1 
On 7/22/21 5:13 PM, Biju Das wrote:

> The ravb_ring_format function uses extended descriptor in rx for
> R-Car where as it use normal descriptor for RZ/G2L. Factorise
> rx ring buffer buildup to extend the support for 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      |  1 +
>  drivers/net/ethernet/renesas/ravb_main.c | 34 +++++++++++++++---------
>  2 files changed, 23 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
> index 3a9cf6e8671a..a3258c5d0c3d 100644
> --- a/drivers/net/ethernet/renesas/ravb.h
> +++ b/drivers/net/ethernet/renesas/ravb.h
> @@ -990,6 +990,7 @@ 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);

   Like I said, we don't need another indirection.... also both ops are for RX.

[...]
> diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
> index a3b8b243fd54..c23f0d420c70 100644
> --- a/drivers/net/ethernet/renesas/ravb_main.c
> +++ b/drivers/net/ethernet/renesas/ravb_main.c
> @@ -311,26 +311,15 @@ static void ravb_ring_free(struct net_device *ndev, int q)
>  }
>  
>  /* Format skb and descriptor buffer for Ethernet AVB */
> -static void ravb_ring_format(struct net_device *ndev, int q)
> +static void ravb_ring_format_rx(struct net_device *ndev, int rxq)

   How about ravb_rx_ring_format(struct net_device *ndev, int q)?

[...]

MBR, Sergei
Biju Das July 30, 2021, 6:24 a.m. UTC | #2 
HI Sergei,

Thanks for the feedback.

> Subject: Re: [PATCH net-next 10/18] ravb: Factorise ravb_ring_format
> function
> 
> On 7/22/21 5:13 PM, Biju Das wrote:
> 
> > The ravb_ring_format function uses extended descriptor in rx for R-Car
> > where as it use normal descriptor for RZ/G2L. Factorise rx ring buffer
> > buildup to extend the support for 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      |  1 +
> >  drivers/net/ethernet/renesas/ravb_main.c | 34
> > +++++++++++++++---------
> >  2 files changed, 23 insertions(+), 12 deletions(-)
> >
> > diff --git a/drivers/net/ethernet/renesas/ravb.h
> > b/drivers/net/ethernet/renesas/ravb.h
> > index 3a9cf6e8671a..a3258c5d0c3d 100644
> > --- a/drivers/net/ethernet/renesas/ravb.h
> > +++ b/drivers/net/ethernet/renesas/ravb.h
> > @@ -990,6 +990,7 @@ 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);
> 
>    Like I said, we don't need another indirection.... also both ops are
> for RX.

OK. Will add this as part of ravb_drv_data.

> 
> [...]
> > diff --git a/drivers/net/ethernet/renesas/ravb_main.c
> > b/drivers/net/ethernet/renesas/ravb_main.c
> > index a3b8b243fd54..c23f0d420c70 100644
> > --- a/drivers/net/ethernet/renesas/ravb_main.c
> > +++ b/drivers/net/ethernet/renesas/ravb_main.c
> > @@ -311,26 +311,15 @@ static void ravb_ring_free(struct net_device
> > *ndev, int q)  }
> >
> >  /* Format skb and descriptor buffer for Ethernet AVB */ -static void
> > ravb_ring_format(struct net_device *ndev, int q)
> > +static void ravb_ring_format_rx(struct net_device *ndev, int rxq)
> 
>    How about ravb_rx_ring_format(struct net_device *ndev, int q)?

Agreed.

Cheers,
Biju

> 
> [...]
> 
> MBR, Sergei
diff mbox series

Patch

diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index 3a9cf6e8671a..a3258c5d0c3d 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -990,6 +990,7 @@  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);
 };
 
 struct ravb_drv_data {
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index a3b8b243fd54..c23f0d420c70 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -311,26 +311,15 @@  static void ravb_ring_free(struct net_device *ndev, int q)
 }
 
 /* Format skb and descriptor buffer for Ethernet AVB */
-static void ravb_ring_format(struct net_device *ndev, int q)
+static void ravb_ring_format_rx(struct net_device *ndev, int q)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
-	int num_tx_desc = priv->num_tx_desc;
 	struct ravb_ex_rx_desc *rx_desc;
-	struct ravb_tx_desc *tx_desc;
-	struct ravb_desc *desc;
 	int rx_ring_size = sizeof(*rx_desc) * priv->num_rx_ring[q];
-	int tx_ring_size = sizeof(*tx_desc) * priv->num_tx_ring[q] *
-			   num_tx_desc;
 	dma_addr_t dma_addr;
 	int i;
 
-	priv->cur_rx[q] = 0;
-	priv->cur_tx[q] = 0;
-	priv->dirty_rx[q] = 0;
-	priv->dirty_tx[q] = 0;
-
 	memset(priv->rx_ring[q], 0, rx_ring_size);
-	/* Build RX ring buffer */
 	for (i = 0; i < priv->num_rx_ring[q]; i++) {
 		/* RX descriptor */
 		rx_desc = &priv->rx_ring[q][i];
@@ -349,6 +338,26 @@  static void ravb_ring_format(struct net_device *ndev, int q)
 	rx_desc = &priv->rx_ring[q][i];
 	rx_desc->dptr = cpu_to_le32((u32)priv->rx_desc_dma[q]);
 	rx_desc->die_dt = DT_LINKFIX; /* type */
+}
+
+static void ravb_ring_format(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;
+	struct ravb_tx_desc *tx_desc;
+	struct ravb_desc *desc;
+	int tx_ring_size = sizeof(*tx_desc) * priv->num_tx_ring[q] *
+			   num_tx_desc;
+	int i;
+
+	priv->cur_rx[q] = 0;
+	priv->cur_tx[q] = 0;
+	priv->dirty_rx[q] = 0;
+	priv->dirty_tx[q] = 0;
+
+	/* Build RX ring buffer */
+	info->ravb_ops->ring_format(ndev, q);
 
 	memset(priv->tx_ring[q], 0, tx_ring_size);
 	/* Build TX ring buffer */
@@ -1998,6 +2007,7 @@  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,
 };
 
 static const struct ravb_drv_data ravb_gen3_data = {