From: Wolfgang Grandegger <wg@grandegger•com>
To: Mike Timmons <mike_timmons@trimble•com>
Cc: linuxppc-embedded@ozlabs•org
Subject: Re: Anybody have an mpc5200b mscan linux driver under 2.6.24, ARCH=powerpc or equiv?
Date: Wed, 18 Jun 2008 15:45:11 +0200 [thread overview]
Message-ID: <48591167.1050303@grandegger.com> (raw)
In-Reply-To: <161B3BAD77161449A144FF054231C3D6022FEAAE@uss-am-xch-01.am.trimblecorp.net>
Mike Timmons wrote:
> I'm trying to wrestle the peak CAN driver for the old, non-device-tree
> ppc into submission but I'm making a mess of it so far.
>
> I think I'll get it going at some point, but if anybody has or knows of
> an mscan driver for the mpc5200 can you alert me?
http://svn.berlios.de/svnroot/repos/socketcan/trunk/README
The Socket-CAN core is part of the official kernel since 2.6.25.
Wolfgang.
>
> Thanks,
> Mike
>
> -----Original Message-----
> From: linuxppc-embedded-bounces+mike_timmons=trimble.com@ozlabs•org
> [mailto:linuxppc-embedded-bounces+mike_timmons=trimble.com@ozlabs•org]
> On Behalf Of Scott Wood
> Sent: Tuesday, June 17, 2008 4:30 PM
> To: Mike Winter
> Cc: linuxppc-embedded@ozlabs•org
> Subject: Re: PCI DMA Problems With 82xx?
>
> Mike Winter wrote:
>> We are developing with an 8248-based platform, and we have a vendor
>> telling us that the PCI hardware is unreliable on this CPU family, in
>> particular the DMA functionality. A quick search of this list doesn't
>
>> turn up any horror stories, although the processor does have some PCI
>> errata listed. Does anybody have any practical experience using PCI
> on
>> the 8248 or similar that they can share with me? Thanks.
>
> Make sure that you park the bus on PCI, and elevate PCI's arbitration
> priority. See fixup_pci() in arch/powerpc/boot/cuboot-pq2.c.
>
> I haven't had a problem with PCI DMA when that is done, though I haven't
>
> done significant stress testing.
>
> -Scott
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>
next prev parent reply other threads:[~2008-06-18 13:45 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-17 19:32 PCI DMA Problems With 82xx? Mike Winter
2008-06-17 21:29 ` Scott Wood
2008-06-17 21:49 ` Rune Torgersen
2008-06-17 21:51 ` Rune Torgersen
2008-06-17 21:52 ` Scott Wood
2008-06-18 13:32 ` Anybody have an mpc5200b mscan linux driver under 2.6.24, ARCH=powerpc or equiv? Mike Timmons
2008-06-18 13:45 ` Wolfgang Grandegger [this message]
2008-06-18 14:02 ` Mike Timmons
2008-06-18 14:18 ` Wolfgang Grandegger
2008-06-18 16:16 ` Mike Timmons
2008-06-19 10:38 ` Daniel Schnell
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