From: Stefan Roese <sr@denx.de>
To: linuxppc-embedded@ozlabs.org
Subject: Re: Yosemite/440EP 'issues' as a PCI target
Date: Sat, 11 Feb 2006 09:06:05 +0100 [thread overview]
Message-ID: <200602110906.05547.sr@denx.de> (raw)
In-Reply-To: <43ECD753.5000105@ovro.caltech.edu>
Hi David,
On Friday 10 February 2006 19:11, David Hawkins wrote:
> > Just use newer host CPU's! ;-)
>
> Ah, the words of a true engineer :)
>
> Of course the project manager wouldn't appreciate me doing that.
>
> However, its not totally out of the question ... $50 per 21555
> and 20 per crate, thats $1000, about half the price of
> a CPU. But of course, without the I20 unit on the 440EP,
> I might need the 21555 anyway.
Do you really need this I2O unit? You could easily create some message
ringbuffers, one in the 440EP's SDRAM for the host-to-440 messages and one in
the host-cpu SDRAM for the 440-to-host messages. This way, all messages will
be transferred using pci writes.
Best regards,
Stefan
next prev parent reply other threads:[~2006-02-11 8:06 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-02 9:35 Yosemite/440EP why are readl()/ioread32() setup to readlittle-endian? Jenkins, Clive
2006-02-02 9:46 ` Eugene Surovegin
2006-02-02 14:37 ` Matt Porter
2006-02-02 17:45 ` Eugene Surovegin
2006-02-02 18:16 ` Matt Porter
2006-02-05 4:41 ` Yosemite/440EP PLB4 vs PLB3 DMA to PCI issue David Hawkins
2006-02-05 10:39 ` Wolfgang Denk
2006-02-05 23:47 ` David Hawkins
2006-02-06 18:31 ` Stefan Roese
2006-02-06 19:09 ` David Hawkins
2006-02-08 15:38 ` Stefan Roese
2006-02-08 18:43 ` David Hawkins
2006-02-09 0:34 ` Wolfgang Denk
2006-02-09 13:25 ` Mark Chambers
2006-02-09 23:58 ` Yosemite/440EP 'issues' as a PCI target David Hawkins
2006-02-10 7:47 ` Stefan Roese
2006-02-10 17:05 ` David Hawkins
2006-02-10 17:20 ` Andrew Armitage
2006-02-10 17:26 ` David Hawkins
2006-02-10 17:31 ` Wolfgang Denk
2006-02-10 17:38 ` David Hawkins
2006-02-10 17:58 ` David Hawkins
2006-02-11 6:03 ` David Hawkins
2006-02-11 8:21 ` Stefan Roese
2006-02-11 18:15 ` David Hawkins
2006-02-11 13:03 ` Wolfgang Denk
2006-02-10 17:59 ` Stefan Roese
2006-02-10 18:11 ` David Hawkins
2006-02-11 8:06 ` Stefan Roese [this message]
2006-02-11 18:06 ` David Hawkins
2006-02-11 19:00 ` David Hawkins
[not found] ` <001701c62e6c$09c48ea0$6401a8c0@CHUCK2>
2006-02-10 18:19 ` David Hawkins
2006-02-11 6:06 ` David Hawkins
[not found] ` <43ECCCA2.1070007@sandburst.com>
[not found] ` <43ECCE7A.4090507@ovro.caltech.edu>
[not found] ` <43ECD19E.8010604@sandburst.com>
2006-02-10 19:13 ` David Hawkins
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