Re: [PATCH 6/7] macb: fix tx ring size

[Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>]

On 17:33 Mon 11 Feb     , Sascha Hauer wrote:
> On Fri, Feb 08, 2013 at 10:18:49AM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
> > the mininal tx ring size is 2 as if one we wrap on the same descriptor
> > and can cause IP lock on GEM (gigabit version) this is always the case
> > 
> > Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
> > Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
> > ---
> >  drivers/net/macb.c |   50 ++++++++++++++++++++++++++++++++++----------------
> >  1 file changed, 34 insertions(+), 16 deletions(-)
> > 
> > diff --git a/drivers/net/macb.c b/drivers/net/macb.c
> > index d6b60aa..3a65af7 100644
> > --- a/drivers/net/macb.c
> > +++ b/drivers/net/macb.c
> > @@ -53,15 +53,17 @@
> >  
> >  #define MACB_RX_BUFFER_SIZE	128
> >  #define RX_BUFFER_MULTIPLE	64  /* bytes */
> > -#define RX_RING_SIZE		32 /* must be power of 2 */
> 
> This removes RX_RING_SIZE...

I miss split the patch with gem

I resend it

Best Regards,
J.

> 
> > @@ -244,10 +259,13 @@ static void macb_init(struct macb_device *macb)
> >  	}
> >  	macb->rx_ring[RX_RING_SIZE - 1].addr |= MACB_BIT(RX_WRAP);
> 
> But not its users.
> 
> Dropped.
> 
> Sascha
> 
> >  
> > -	macb->tx_ring[0].addr = 0;
> > -	macb->tx_ring[0].ctrl = MACB_BIT(TX_USED) | MACB_BIT(TX_WRAP);
> > +	for (i = 0; i < TX_RING_SIZE; i++) {
> > +		macb->tx_ring[i].addr = 0;
> > +		macb->tx_ring[i].ctrl = MACB_BIT(TX_USED);
> > +	}
> > +	macb->tx_ring[TX_RING_SIZE - 1].addr |= MACB_BIT(TX_WRAP);
> >  
> > -	macb->rx_tail = macb->tx_tail = 0;
> > +	macb->rx_tail = macb->tx_head = macb->tx_tail = 0;
> >  
> >  	macb_writel(macb, RBQP, (ulong)macb->rx_ring);
> >  	macb_writel(macb, TBQP, (ulong)macb->tx_ring);
> > -- 
> > 1.7.10.4
> > 
> > 
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> 
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