Re: Netgear FA311

[Manfred <manfred@colorfullife.com>]

Alex wrote:
> In the logs I'm seeing this: 
> 
> Dec 25 15:25:18 tahallah last message repeated 2 times 
> Dec 25 15:25:19 tahallah kernel: eth0: Something Wicked happened! 0783. 
> Dec 25 15:25:19 tahallah kernel: eth0: Something Wicked happened! 0780. 

783 means:
	Tx Underrun
	Tx Idle
	Tx Packet Error
	Tx Descriptor
	Rx Packet Error
	Rx Descriptor
	Rx OK.

Hmm. I download the Documentation from National
(http://www.national.com/pf/DP/DP83815.html),
and the the tx burst size/fill threshold/drain threshold combination is
invalid:

<<<<<<<< from natsemi.c:
 /* Configure the PCI bus bursts and FIFO thresholds. */
 /* Configure for standard, in-spec Ethernet. */
 np->tx_config = (1<<28) +       /* Automatic transmit padding */
             (1<<23) +       /* Excessive collision retry */
             (0x0<<20) +     /* Max DMA burst = 512 byte */
             (8<<8) +        /* fill threshold = 256 byte */
             2;              /* drain threshold = 64 byte */
 writel(np->tx_config, ioaddr + TxConfig);
>>>>>>>>>>>>

But:
<<<<<<<< page 51
The MXDMA MUST NOT be greater than the Tx Fill Threshold 
>>>>>>>>>>

Could you try this setup?
<<<<<<<<
 /* Configure the PCI bus bursts and FIFO thresholds. */
 /* Configure for standard, in-spec Ethernet. */
 np->tx_config = (1<<28) +       /* Automatic transmit padding */
             (1<<23) +       /* Excessive collision retry */
             (6<<20) +     /* Max DMA burst = 128 byte */
             (8<<8) +        /* fill threshold = 256 byte */
             8;              /* drain threshold = 256 byte */
 writel(np->tx_config, ioaddr + TxConfig);
>>>>>>>>

--
  Manfred
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