On Fri, Jan 08, 2010 at 12:44:59PM +0100, Matthias Hopf wrote: > On Oct 13, 09 00:09:28 +0200, jfs wrote: > > i am trying to understand how the atombios parser works. i have > > been looking at both the xf86-video-ati code and the > > drivers/gpu/drm/radeon code in recent (2.6.31) linux tree. > > i pretty much get the idea, but i am stumbling on some parts. > > For what it's worth - it might be helpful to take a look at my (very > simple) AtomBIOS disassembler: > > git://anongit.freedesktop.org/~mhopf/AtomDis > > > i understand this is about some indirect i/o accesses. but would > > it be possible to have a high level description of what are these > > iios and what is happening? > > There is a high-level document describing the AtomBIOS language, but you > have to pester Alex for releasing it. I doubt there's anything IP > related in the docs, but you never know.
This document described... hrm DCE 3.0? We never got to see anything for earlier devices, i guess then it didn't exist. But DCE 3.0 and newer should have docs easily available inside ATI and under AMD """NDA""". > Dunno about this register, but we're (still) waiting for quite some of > the docs to be released to the public we were given for radeonhd > development. There were supposed to be publicly available after some > time... :) >From phoronix: "It's not like there's a big heap of ready-to-go documentation just waiting to be released. All of the code and docs you see are being purpose-written for the open source effort, and until we get something working it's not clear what we need to review & release." http://www.phoronix.com/forums/showthread.php?t=20577#post101905 Or even more recently it seems so that even basic modesetting is deemed to be IP heavy (which i find strange): "We have started taking the initial Evergreen display code through IP review anyways." http://www.phoronix.com/forums/showpost.php?p=105204&postcount=2 Not sure what the documentation policy of ATI is today. Luc Verhaegen. _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
