From: Sylvain Munaut <tnt@246tNt.com>
To: Oliver Rutsch <orutsch@sympatec.com>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: MPC5200, PLX9054 PCI Card - stalled DMA transfers
Date: Thu, 08 Mar 2007 13:20:53 +0100 [thread overview]
Message-ID: <45EFFFA5.7080004@246tNt.com> (raw)
In-Reply-To: <45EFBF91.7080304@sympatec.com>
>> Anyway, manually setup a DMA transfer and convince yourself that
>> you know which bits to twiddle, then figure out why the driver
>> code isn't doing as its asked.
>>
>>
>
> I've done so without success. The driver seems to make everything
> correct. A block DMA is fairly simple on the 9054, so I think there must
> be a hardware reason for this.
> Has anybody ever used a PCI card on the MPC5200 which has its own
> busmaster controller? I think most people use the BestComm DMA
> controller on the MPC5200, right?
>
No, most PCI card that need big xfer uses bus mater. A ide card, a
network card, ... all most certainly use it.
Bestcomm on the 5200 is for the SoC internal peripheral mainly.
Sylvain
next prev parent reply other threads:[~2007-03-08 12:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-01 12:44 MPC5200, PLX9054 PCI Card - stalled DMA transfers Oliver Rutsch
2007-03-01 22:48 ` David Hawkins
2007-03-08 7:47 ` Oliver Rutsch
2007-03-08 12:20 ` Sylvain Munaut [this message]
2007-03-09 17:03 ` David Hawkins
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