[Nouveau] [Bug 70390] [NV84] Repeated system crashes under graphics load, E[PFIFO] DMA_PUSHER and lots of E[PGRAPH]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70390

--- Comment #6 from Ilia Mirkin <imirkin at alum.mit.edu> ---
The commonality here is that in all cases you get

[22145.017855] nouveau E[   PFIFO][0000:01:00.0] DMA_PUSHER - ch 4
[stellarium[17059]] get 0x0020049408 put 0x0020053fcc ib_get 0x00000349 ib_put
0x00000352 state 0x80007641 (err: INVALID_CMD) push 0x00406040

But 0x00406040 is a perfectly valid command, ever since the Riva TNT chips. It
should decode as

method = 0x10
subchan = 3
count = 0x10

This makes sense. These 4 methods deal with semaphore manipulation.

<reg32 offset="0x10" name="SEMAPHORE_ADDRESS_HIGH" variants="NV84-"/>
<reg32 offset="0x14" name="SEMAPHORE_ADDRESS_LOW" variants="NV84-"/>
<reg32 offset="0x18" name="SEMAPHORE_SEQUENCE" variants="NV84-"/>
<reg32 offset="0x1c" name="SEMAPHORE_TRIGGER" variants="NV84-">

which happens a fair bit for CPU vs GPU syncs.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/nouveau/attachments/20131011/2e988fb0/attachment.html>