PPC Linux support for Tundra TSI148

[Martin, Tim]

Gerhard,

Thanks for the information.  More questions...

What type of transfers were you doing? (e.g. A32/D64? SST320 or SST267?)

Are these transfer from userspace data, from kernelspace data, or from
the Tundra's pattern buffer?

What was your PCI bus speed & width?

Were you using inbound/outbound windows or Tundra's DMA controller?

What was the Tundra chipset configuration for the 168 MBps?

Thanks,
Tim

> -----Original Message-----
> From: linuxppc-embedded-bounces+tmartin=viasat.com at ozlabs.org
> [mailto:linuxppc-embedded-bounces+tmartin=viasat.com at ozlabs.org] On
Behalf
> Of Gerhard Jaeger
> Sent: Wednesday, April 26, 2006 12:26 AM
> To: linuxppc-embedded at ozlabs.org
> Subject: Re: PPC Linux support for Tundra TSI148
> 
> On Wednesday 26 April 2006 01:47, Martin, Tim wrote:
> > Does anyone out there have any real world measured performance of a
> > Linux PowerPC (kernel module + user space application) doing 2eSST
VME
> > transfers with the Tundra TSI148 chipset?
> >
> > Tundra has a Linux driver available for the Motorola MVME6100 , but
told
> > me they don't have any performance data available.  I'm looking for
> > sustained throughput rates, not the peak burst rates (e.g. 320 MBps,
267
> > MBps).
> >
> 
> Hi,
> 
> I've done here some tests between two MVME6100, while updating the
6100
> BSP
> for our embedded Linux distro. Depending on the buffersize, alignment,
VME
> and
> PCI FIFO settings we have (without further optimizations) throughput
rates
> ranging
> from 100MBps up to 168MBps. I think some tuning could still be done.
> 
> HTH
> Gerhard
> 
> --
> Gerhard Jaeger <gjaeger at sysgo.com>
> SYSGO AG                      Embedded and Real-Time Software
> www.sysgo.com | www.elinos.com | www.pikeos.com | www.osek.de
> 
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