[Bug 60802] Corruption with DMA ring on cayman

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Comment # 61 on bug 60802 from
(In reply to comment #59)
> Alex, a couple of things changed in your last attachment. You removed the
> L2T part, you reverted the "non_disp = 2" back to "non_disp = 1" and changed
> the binary offset for 28 (instead of 27). Am I right to understand you set
> "non_disp" back to 1 because your are offsetting one more bit (according to
> your comment in v2)?

The non_disp field is two bits on cayman and one bit evergreen.  Bit 28 in this
packet represents bit 0 of the non_disp field and bit 27 represents bit 1 of
the non_disp field so that it's compatible with evergreen.  So just setting bit
28 covers us for both evergreen and cayman since we only care about non_dip bit
0.


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