From: xu chen <chenxurcy@yahoo•com.cn>
To: linuxppc-dev@ozlabs•org
Subject: opb_ethernet driver
Date: Mon, 11 Jun 2007 10:37:55 +0800 (CST) [thread overview]
Message-ID: <22250.22723.qm@web92006.mail.cnb.yahoo.com> (raw)
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Hello.
I'm porting an opb_ethernet driver to my ml403 board now, using the 2.6.17 kernel. I know the ethernet support 3 mode: No DMA, simple DMA, scatter gather DMA, when I use the No DMA mode, we can write the skb into the FIFO, but can't ping other PCs in the network. When I use the simple DMA mode, at the time of ping, in the driver, we should initialize the DMA channel, but when transfering the skb, the DMA returns a "DMA bus time out" signal.
Now I'm worry about it. Who had encountered the problem before? I think I need some help.
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next reply other threads:[~2007-06-11 2:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-11 2:37 xu chen [this message]
2007-06-12 3:45 ` opb_ethernet driver David Gibson
2007-06-14 6:13 ` Grant Likely
-- strict thread matches above, loose matches on Subject: below --
2007-06-11 2:47 xu chen
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