Hi .
I was testing SCC ethernet performance at our 850 custom board and found
somting interesting.
1. Tested FTP Transfer about 20MB file with 10T hub I got about 250 k bps
(someting poor ..)
2. and I found the hhl20 arch/ppc/8xx_io/enet.c source code NOT enable full
duplex ..
and I
Dan and Matt
I agree with you 100%
Chip
-- Forwarded by Ralph Blach/Raleigh/IBM on 07/16/2002
12:13 PM ---
Matt Porter @lists.linuxppc.org on 07/16/2002 11:27:26 AM
Sent by:owner-linuxppc-embedded at lists.linuxppc.org
To:Dan Malek
cc:
A little while back Tom Rini suggested that we implement the various
tricks ARM uses in its version of consistent_alloc() in our version.
I've made a start on that, but there are some complications.
There are basically two things that ARM does and we don't:
1. Frees unused pages in the all
Jim Lin wrote:
>
> Hi .
>
> I was testing SCC ethernet performance at our 850 custom board and found
> somting interesting.
>
> 1. Tested FTP Transfer about 20MB file with 10T hub I got about 250 k bps
> (someting poor ..)
> 2. and I found the hhl20 arch/ppc/8xx_io/enet.c source code NOT ena
David Gibson wrote:
> In addition, the following seem to me like desirable (to a greater or
> lesser extent) properties for consistent_alloc():
> a. one of the return values can be used as a single "handle"
> so that consistent_free() only needs one parameter.
We want the implementation AP
On Tue, Jul 16, 2002 at 10:09:03AM -0400, Dan Malek wrote:
>
> David Gibson wrote:
> > - if (in_interrupt())
> > - BUG();
> > + BUG_ON(in_interrupt());
>
> We should be able to call these functions from interrupt, let's push
> the remainder of the changes though get_free_pages() to m
[...]
> >
> > However, on powerpc, as soon as I try to do, for example:
> >
> > *buf = '\0'; // write one char to virt addr returned by ioremap
> >
> > It blows up with a machine check.
>
> You are hitting a 440GP specific feature. ioremap is trapping
> ranges of addresses and "fixing them up
On Tue, Jul 16, 2002 at 10:09:03AM -0400, Dan Malek wrote:
>
> David Gibson wrote:
> > c. be able to use highmem pages
>
> You think there will be non-coherent processors with this much memory? :-)
I guess you're kidding, but to be clear to everybody, the 440GP does
handle up to 2GB of DDR.
On Tue, Jul 16, 2002 at 10:09:03AM -0400, Dan Malek wrote:
>
> David Gibson wrote:
> >-if (in_interrupt())
> >-BUG();
> >+BUG_ON(in_interrupt());
>
> We should be able to call these functions from interrupt, let's push
> the remainder of the changes though get_free_pages() to m
