On 06/08/2011 02:36 AM, Chris Wilson wrote:
On Tue, 07 Jun 2011 17:55:05 -0700, Kenneth Graunke<[email protected]>
wrote:
On 06/07/2011 04:14 PM, Keith Packard wrote:
What's this last DWORD supposed to be for? The IVB spec says length
should be '1' and there should be only 3 DWORDS in this command.
Good question. My reading of the docs say that it should be 3 DWORDs on
SNB as well; this code was directly lifted from "case 6" above (save the
first line).
In my ancient copy of the specs, MI_DISPLAY_FLIP is 4 dwords, with this
last dword for programming the panel-fitter and pipesrc. And it also
says that command is applicable to IVB, but as I said it is an ancient
copy.
-Chris
That's correct. SNB /does/ include a 4th DWord as you describe---newer
specs got mangled and lost that info, somehow. Argh.
IVB does only use three DWords, so the last OUT_RING should be nixed.
Removing that does change the behavior, but doesn't yet make it work.
Thanks!
--Kenneth
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