NVAF chipset not supported by nouveau

[Marcin Kościelnicki]

NVAF is a chipset used by GeForce 320M card, which in turn is used on recent MacBookPro. Trying to use it with current ubuntu
results in the following kernel messages:

[ 63.031163] [drm] nouveau 0000:04:00.0: I don't know how to make a ctxprog for your NVaf card.
[ 63.031166] [drm] nouveau 0000:04:00.0: Disabling acceleration. Please contact the devs.

Adding support for this chipset requires getting a mmiotrace of the binary nvidia driver running on it - see nouveau wiki for details.

Note that I'm *not* experiencing this bug, I'm a nouveau developer and was asked to create a bug entry for this issue to gather data.

[Jeremy Foshee (jeremyfoshee)]

Hi Marcin,

Please be sure to confirm this issue exists with the latest development release of Ubuntu. ISO CD images are available from http://cdimage.ubuntu.com/daily/current/ . If the issue remains, please run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 602518

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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[Dave Walker (davewalker)]

As requested, here is a mmiotrace. If you require further information, please feel free to request it.

Thanks.

[Marcin Kościelnicki (koriakin)]

Ew. No good news, Apparently blob uses a different method to write to card's memory on this chipset, since it's an IGP and uses stolen system RAM instead of dedicated VRAM. And this doesn't go through mmiotrace.

We're having a brainstorm on how to modify the mmiotrace/blob to catch the required stuff. One idea is to use older blob, since we somehow got valid traces for NVAA/NVAC IGPs in the past. But I have no idea how much older it'd have to be. Possibly too old to support NVAF.

Alternatively, I could try guessing the remaining required stuff from strand scan instead. This involves the following:

1. Load blob, run X, glxgears.
2. Kill X, unload blob.
3. git clone git://0x04.net/pgtest && cd pgtest && make
4. sudo ./peek 400000 10000 > nvaf-mmio
5. sudo ./strscan > nvaf-strscan
6. Submit the two resulting files

Note that these two commands should be run without blob loaded, or stuff will explode.

[Dave Walker (davewalker)]

@Marcin. Okay, sorry that trace wasn't of more use.

I will provide the additional data as requested later today, unless someone else provides it first.

Thanks.

[Marcin Kościelnicki (koriakin)]

ping?

[Dave Walker (davewalker)]

@Marcin, apologies for the delay. Here is the two files, the nvaf-mmio appears less than useful :/

$ cat /tmp/nvaf-mmio
...

[Marcin Kościelnicki (koriakin)]

hmm, maybe blob turns off PGRAPH after unload... how about doing the peek after strscan?

The strscan looks good and I should be able to reconstruct corresponding part of grctx with it.

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

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