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From: Biju Das <biju.das.jz@bp.renesas.com>
To: Sergei Shtylyov <sergei.shtylyov@gmail.com>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>,
	Sergey Shtylyov <s.shtylyov@omprussia.ru>,
	Adam Ford <aford173@gmail.com>, Andrew Lunn <andrew@lunn.ch>,
	Yuusuke Ashizuka <ashiduka@fujitsu.com>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
	"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
	"linux-renesas-soc@vger.kernel.org" 
	<linux-renesas-soc@vger.kernel.org>,
	Chris Paterson <Chris.Paterson2@renesas.com>,
	Biju Das <biju.das@bp.renesas.com>,
	Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@bp.renesas.com>
Subject: RE: [PATCH net-next 11/18] ravb: Factorise ravb_ring_init function
Date: Fri, 30 Jul 2021 06:54:43 +0000	[thread overview]
Message-ID: <OS0PR01MB5922CAC5CDA8D5A2E045F72F86EC9@OS0PR01MB5922.jpnprd01.prod.outlook.com> (raw)
In-Reply-To: <a6728580-11d9-64f5-4c95-32a5a01379ac@gmail.com>

Hi Sergei,

Thanks for the feedback.

> Subject: Re: [PATCH net-next 11/18] ravb: Factorise ravb_ring_init
> function
> 
> 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. :-)

OK. I meant add a helper function for rx ring buffer allocation.

> 
> > 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! :-)
> 
> 
> > 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.

Ah OK.

Cheers,
Biju

> 
> > +{
> > +	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 = {
> >


  reply	other threads:[~2021-07-30  6:54 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-22 14:13 [PATCH net-next 00/18] Add Gigabit Ethernet driver support Biju Das
2021-07-22 14:13 ` [PATCH net-next 01/18] dt-bindings: net: renesas,etheravb: Document Gigabit Ethernet IP Biju Das
2021-07-22 14:13 ` [PATCH net-next 02/18] drivers: clk: renesas: rzg2l-cpg: Add support to handle MUX clocks Biju Das
2021-07-23 10:26   ` Sergei Shtylyov
2021-07-23 12:12     ` Biju Das
2021-07-26 10:53   ` Geert Uytterhoeven
2021-07-26 12:23     ` Biju Das
2021-07-22 14:13 ` [PATCH net-next 03/18] drivers: clk: renesas: r9a07g044-cpg: Add ethernet clock sources Biju Das
2021-07-26 10:50   ` Geert Uytterhoeven
2021-07-26 11:43     ` Biju Das
2021-07-26 11:50       ` Geert Uytterhoeven
2021-07-22 14:13 ` [PATCH net-next 04/18] drivers: clk: renesas: r9a07g044-cpg: Add GbEthernet clock/reset Biju Das
2021-07-26 10:11   ` Geert Uytterhoeven
2021-07-26 10:18     ` Biju Das
2021-07-22 14:13 ` [PATCH net-next 05/18] ravb: Replace chip type with a structure for driver data Biju Das
2021-07-22 20:42   ` Sergei Shtylyov
2021-07-23  6:08     ` Biju Das
2021-07-22 14:13 ` [PATCH net-next 06/18] ravb: Factorise ptp feature Biju Das
2021-07-23 20:56   ` Sergei Shtylyov
2021-07-26  9:01     ` Biju Das
2021-07-26 13:08       ` Andrew Lunn
2021-07-26 13:41         ` Biju Das
2021-07-22 14:13 ` [PATCH net-next 07/18] ravb: Add features specific to R-Car Gen3 Biju Das
2021-07-22 14:13 ` [PATCH net-next 08/18] ravb: Add R-Car common features Biju Das
2021-07-27 20:48   ` Sergei Shtylyov
2021-07-28 10:13     ` Biju Das
2021-07-28 13:45       ` Andrew Lunn
2021-07-29 15:10         ` Biju Das
2021-07-22 14:13 ` [PATCH net-next 09/18] ravb: Factorise ravb_ring_free function Biju Das
2021-07-29 18:02   ` Sergei Shtylyov
2021-07-30  6:21     ` Biju Das
2021-08-20 15:32       ` Biju Das
2021-07-22 14:13 ` [PATCH net-next 10/18] ravb: Factorise ravb_ring_format function Biju Das
2021-07-29 18:30   ` Sergei Shtylyov
2021-07-30  6:24     ` Biju Das
2021-07-22 14:13 ` [PATCH net-next 11/18] ravb: Factorise ravb_ring_init function Biju Das
2021-07-29 18:53   ` Sergei Shtylyov
2021-07-30  6:54     ` Biju Das [this message]
2021-07-22 14:13 ` [PATCH net-next 12/18] ravb: Factorise {emac,dmac} init function Biju Das
2021-08-02 19:41   ` Sergei Shtylyov
2021-08-20 15:42     ` Biju Das
2021-08-20 18:57       ` Sergey Shtylyov
2021-08-20 19:44         ` Biju Das
2021-07-22 14:13 ` [PATCH net-next 13/18] ravb: Factorise ravb_rx function Biju Das
2021-07-22 14:13 ` [PATCH net-next 14/18] ravb: Factorise ravb_adjust_link function Biju Das
2021-07-22 14:13 ` [PATCH net-next 15/18] ravb: Factorise ravb_set_features Biju Das
2021-07-22 14:13 ` [PATCH net-next 16/18] ravb: Add reset support Biju Das
2021-07-22 14:13 ` [PATCH net-next 17/18] ravb: Add GbEthernet driver support Biju Das
2021-07-22 14:13 ` [PATCH net-next 18/18] arm64: dts: renesas: r9a07g044: Add GbEther nodes Biju Das
2021-07-22 20:53 ` [PATCH net-next 00/18] Add Gigabit Ethernet driver support Sergei Shtylyov
2021-07-22 21:07   ` Andrew Lunn
2021-07-23  6:28     ` Biju Das
2021-07-26 10:55       ` Geert Uytterhoeven
2021-07-26 13:49         ` Arnd Bergmann
2021-07-23  6:23   ` Biju Das

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