[mythtv-users] Strange Ceton issues.

[Scott Stancil]

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:

 vbuffer->dma_addrs[write_page_index] = pci_map_page( dev->pdev,
                  vbuffer->pages[write_page_index], 0, PAGE_SIZE,
PCI_DMA_FROMDEVICE);

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.

Scott

On Mon, Aug 1, 2011 at 6:13 PM, Scott Stancil <hoverduck at gmail.com> wrote:

> I've got the notify_cc_check happening once or twice a second too, but it's
> just overshadowed by the nommu error.
>
> Scott
>
>
> On Mon, Aug 1, 2011 at 4:54 PM, Erik Jensen <eriksjunk at laurelwoodart.com>wrote:
>
>> On Mon, Aug 1, 2011 at 3:52 AM, Scott Stancil <hoverduck at gmail.com>
>> wrote:
>> > Are there any clues in the output of dmesg?  I'm curious if you're
>> seeing
>> > the same thing I am:
>> >
>> > [ 1790.797475] nommu_map_single: overflow 116dce000+4096 of device mask
>> > ffffffff
>> > [ 1790.797481] nommu_map_single: overflow 116dcf000+4096 of device mask
>> > ffffffff
>> > [ 1790.797487] nommu_map_single: overflow 1170c8000+4096 of device mask
>> > ffffffff
>> > [ 1790.877361] notify_cc_check:41 WARNING: (0) NOTIFY board 0 tuner 0
>> pid
>> > 0xaaa out_of_sync 19000
>> >
>> > My temperatures aren't getting quite as high as yours, though.
>> > Scott
>>
>> I am seeing:
>>
>> notify_cc_check: 41 WARNING: (0) NOTIFY board 0 tuner 0 pid 0x0
>> out_of_sync 1000
>> notify_cc_check: 41 WARNING: (0) NOTIFY board 0 tuner 0 pid 0x0
>> out_of_sync 2000
>> notify_cc_check: 41 WARNING: (0) NOTIFY board 0 tuner 0 pid 0x0
>> out_of_sync 3000
>> notify_cc_check: 41 WARNING: (0) NOTIFY board 0 tuner 0 pid 0x0
>> out_of_sync 4000
>> notify_cc_check: 41 WARNING: (0) NOTIFY board 0 tuner 0 pid 0x0
>> out_of_sync 5000
>>
>> but nothing about nommu_map_single that I can see.
>>
>> -- Erik Jensen
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>>
>
>
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