I've finally resolved my issues with the Ceton (mostly). I finally started throwing some debug lines in the driver code and narrowed it down to the one line that was misbehaving: <br><div> </div><div> vbuffer->dma_addrs[write_page_index] = pci_map_page( dev->pdev,</div>
<div> vbuffer->pages[write_page_index], 0, PAGE_SIZE, PCI_DMA_FROMDEVICE);</div><div><br></div><div>After pointing that out to Ceton support, they suggested I artificially restrict my memory in grub, and we determined that putting mem=3g into my grub config file fixed it. They have 64-bit DMA support in the works, but no idea when it'll be available, so I guess I'm stuck with this workaround for now (unless anyone else out there has a better suggestion). I'm just happy to finally get this thing up and running.</div>
<div><br></div><div>Scott</div><br><div class="gmail_quote">On Mon, Aug 1, 2011 at 6:13 PM, Scott Stancil <span dir="ltr"><<a href="mailto:hoverduck@gmail.com" target="_blank">hoverduck@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I've got the notify_cc_check happening once or twice a second too, but it's just overshadowed by the nommu error.<div>
<br></div><div><font color="#888888">Scott</font><div><div></div><div><br><br><div class="gmail_quote">On Mon, Aug 1, 2011 at 4:54 PM, Erik Jensen <span dir="ltr"><<a href="mailto:eriksjunk@laurelwoodart.com" target="_blank">eriksjunk@laurelwoodart.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>On Mon, Aug 1, 2011 at 3:52 AM, Scott Stancil <<a href="mailto:hoverduck@gmail.com" target="_blank">hoverduck@gmail.com</a>> wrote:<br>
> Are there any clues in the output of dmesg? I'm curious if you're seeing<br>
> the same thing I am:<br>
><br>
> [ 1790.797475] nommu_map_single: overflow 116dce000+4096 of device mask<br>
> ffffffff<br>
> [ 1790.797481] nommu_map_single: overflow 116dcf000+4096 of device mask<br>
> ffffffff<br>
> [ 1790.797487] nommu_map_single: overflow 1170c8000+4096 of device mask<br>
> ffffffff<br>
> [ 1790.877361] notify_cc_check:41 WARNING: (0) NOTIFY board 0 tuner 0 pid<br>
> 0xaaa out_of_sync 19000<br>
><br>
> My temperatures aren't getting quite as high as yours, though.<br>
> Scott<br>
<br>
</div>I am seeing:<br>
<br>
notify_cc_check: 41 WARNING: (0) NOTIFY board 0 tuner 0 pid 0x0 out_of_sync 1000<br>
notify_cc_check: 41 WARNING: (0) NOTIFY board 0 tuner 0 pid 0x0 out_of_sync 2000<br>
notify_cc_check: 41 WARNING: (0) NOTIFY board 0 tuner 0 pid 0x0 out_of_sync 3000<br>
notify_cc_check: 41 WARNING: (0) NOTIFY board 0 tuner 0 pid 0x0 out_of_sync 4000<br>
notify_cc_check: 41 WARNING: (0) NOTIFY board 0 tuner 0 pid 0x0 out_of_sync 5000<br>
<br>
but nothing about nommu_map_single that I can see.<br>
<font color="#888888"><br>
-- Erik Jensen<br>
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</blockquote></div><br>