<div class="gmail_quote">On Sat, Mar 7, 2009 at 3:51 PM, Benjamin Herrenschmidt <span dir="ltr"><<a href="mailto:benh@kernel.crashing.org">benh@kernel.crashing.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="im">On Fri, 2009-03-06 at 10:12 -0600, Ben Menchaca wrote:<br>
> Testing now...it looks like it (almost) works, though! Why does<br>
> setting no-snoop cause snooping to work? More on the effect on<br>
> setting that bit in a few minutes...need more testing.<br>
<br>
</div>Maybe they got the documentation for that bit backward ? :-)</blockquote><div><br>For posterity...it does appear that this is the case. I don't have a bus analyzer to watch the transaction, but a JTAG trigger caught the update happening if and only if bit 3 was set in the (R|W)DMA descriptor. My FAE at FS said he is watching this thread, so hopefully some doc errata can be generated so others can avoid my confusion :-).<br>
<br>- Ben<br></div></div><br>