Re: radeon kms on ppc status

["Michel Dänzer" <michel@daenzer.net>]

On Mon, 2010-08-09 at 16:16 +1000, Benjamin Herrenschmidt wrote: 
> 
> I'm currently testing on a rv350 based aluminium powerbooks.

Same here. :)


>   - AGP: locks up before the console shows anything useful, that's
> going to be fun to debug without a serial port ... I'll see what I can
> with netconsole or some firewire hack. Works fine with PCI GART.

AGP 1x works mostly fine for me. Not sure what the problem is with
higher speeds (4x used to work fine with UMS) but I guess most likely
some kind of coherency issue which only matters now that we're
dynamically changing GTT bindings.

The reason you don't get anything useful with higher AGP speeds is that
the attempt to reset the locked-up GPU kills the machine. I tried
tracking this down with netconsole but the only possibly relevant info
I've got out of that yet is that there seem to be some machine checks
occurring.


> - transition from offb. If both kms and offb are built-in, the transition
> leads to panel blooming.

I only tried this once but AFAIR it was the same for me.


> - The other fancy stuff... well, we could make up profiles on powerbooks
> I suppose, at least dynclk can be enable always and I'm sure we can make up
> default profiles with something like half clock speed, what do you reckon ?

Might be nice, though IME the CPU seems to suck more power anyway. :)

IMO the highest priority missing feature is backlight control, followed
by suspend/resume.


Note that there's also still outstanding KMS related endianness issues
in the Mesa tree, in particular concerning r300g but also the classic
driver related to the OpenGL blit functionality. I've been meaning to
clean up and push my hacks for those but had little time recently.


-- 
Earthling Michel Dänzer           |                http://www.vmware.com
Libre software enthusiast         |          Debian, X and DRI developer

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