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Date:      Fri, 26 Oct 2012 18:11:50 -0700
From:      matt <sendtomatt@gmail.com>
To:        Andreas Tobler <andreast-list@fgznet.ch>
Cc:        freebsd-x11@freebsd.org, freebsd-ppc@freebsd.org, Nathan Whitehorn <nwhitehorn@freebsd.org>, Justin Hibbits <chmeeedalf@gmail.com>
Subject:   Re: Does drm/dri currently work on PPC? (SUCCESS!)
Message-ID:  <508B34D6.6000502@gmail.com>
In-Reply-To: <508ADBBA.1060201@fgznet.ch>
References:  <5083C719.1040109@gmail.com> <CAKLtBChswXj7HcZeC=SaJgMNDrZXu==DHFP5PW4wB9=ruKSWWA@mail.gmail.com> <20121021092136.20307802@narn.knownspace> <50846392.70007@gmail.com> <CAHSQbTC7SA8qiVGQi%2BfmsmzYBVQLR09Dmzhjk1Ev=srsufc_HQ@mail.gmail.com> <5085F595.4050609@gmail.com> <20121022215945.436873dc@narn.knownspace> <5089A6DB.9070904@brakiri.com> <5089DF27.9020803@gmail.com> <20121025213018.2bfa5068@narn.knownspace> <5089F799.9030507@gmail.com> <508A17C9.4030007@gmail.com> <508A9EBD.3080107@freebsd.org> <508ADBBA.1060201@fgznet.ch>

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On 10/26/12 11:51, Andreas Tobler wrote:
> On 26.10.12 16:31, Nathan Whitehorn wrote:
>> On 10/25/12 23:55, matt wrote:
>>>> It was working without DRM "out-of-the-box". Of course I've made a
>>>> mess
>>>> trying different versions of both Xorg and the radeon driver. I'm
>>>> in the
>>>> process of getting back to the working config so I can be sure any
>>>> test
>>>> changes work/don't work.
>>>>
>>>> OpenBSD's mpi@ apparently did a lot recently over there getting DRM to
>>>> work on the G4 mini. We already had about half of the commits I see at
>>>> freshbsd, in one way or another...Our rmb/wmb() I think has had PPC
>>>> barriers since earlier this year? He did #define __BIG_ENDIAN, which
>>>> apparently was a big deal for the drm code (it's ifdef'd in a couple
>>>> places), not sure if we are already doing that.
>>>> If someone has a G4 radeon mini they could test to see if drm works
>>>> for
>>>> them or not, to rule out AGP issues (I guess they are PCI?).
>>>>
>>>> I'm not sure how the OpenBSD attachment process works vs ours, some of
>>>> the other commits of note were related to passing the BAR and memory
>>>> regions from the vgapci to drm. When I kldload drm after compiling it,
>>>> it doesn't do anything...but if I kldload radeon.ko, it recognizes agp
>>>> memory and being related to vgapci at the correct pci address...I'm
>>>> not
>>>> sure if we "are there" or not. I also didn't have DRM on OpenBSD
>>>> either.
>>>>
>>>> I think if radeon had drm on *any* big-endian platform it should rule
>>>> out endian issues in drm or radeon. Not sure if this is the case, I
>>>> guess macppc would be the most likely.
>>>>
>>>> Matt
>>> So I removed WITH_NEW_XORG, deinstalled a ton of ports, and reinstalled
>>> Xorg. I rebuild drm with __BIG_ENDIAN defined (not sure if this
>>> matters). I previously put a lot of WERROR= and NO_WERROR= into various
>>> drm makefiles to get gcc to shut up about unused return values. X
>>> -configure worked, and the xorg log indicates the drm device was
>>> successfully opened and I have drm on PPC.
>>> mesa-demos is marked broken for PPC, haven't tried glxinfo or
>>> glxgears yet.
>>>
>>> The good news is it works!
>>> The bad news:
>>> -Cannot switch back to syscons, screen gets corrupted then the system
>>> hard locks
>>> -WITH_NEW_XORG breaks it somehow
>>>
>>> Thanks to mpi@openbsd.org, Justin & Nathan!
>>>
>>> Matt
>>> _______________________________________________
>>> freebsd-ppc@freebsd.org mailing list
>>> http://lists.freebsd.org/mailman/listinfo/freebsd-ppc
>>> To unsubscribe, send any mail to "freebsd-ppc-unsubscribe@freebsd.org"
>>
>> Great to hear! I checked in some code to define __BIG_ENDIAN if needed
>> in -CURRENT's drm (Linux uses a different number of underscores than we
>> do for perverse reasons).
>
> Thank you very much all!
>
> I can confirm it works here too (G5 32-bit):
>
> [helium:~] andreast% dmesg |grep drm
> drm0: <ATI Radeon AR 9600 XT> on vgapci0
> info: [drm] Initialized radeon 1.31.0 20080613
> info: [drm] Setting GART location based on new memory map
> info: [drm] Loading R300 Microcode
> info: [drm] Num pipes: 1
> info: [drm] writeback test succeeded in 1 usecs
>
> and glxgears gives around 1250FPS vs. 52FPS w/o dri.
>
> Andreas
>
>
>
Can you change consoles or exit X successfully?
btw...issue "sync" a couple times first just in case :)
Also, is that an AGP or PCIe G5?

Thanks,

Matt



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