Thanks, found this now - https://www.mail-archive.com/search?l=mesa-...@lists.freedesktop.org&q=subject:%22%5C%5BMesa%5C-dev%5C%5D+gallium+r300+driver+for+PowerPC%22&o=newest&f=1
On 5 February 2016 at 18:08, Herminio Hernandez, Jr. < herminio.hernande...@gmail.com> wrote: > Yeah the issue is with the driOpenDriver function at least that what I > think from what I saw in gdb. > > On Fri, Feb 5, 2016 at 12:06 PM, Mike <michael.hel...@gmail.com> wrote: > >> True, a permanent patch was needed, but at least we are up and running >> and can identify other issues.. In the thread with the patches it is >> highlighted that the drivers are broken in the first place >> >> On 5 February 2016 at 17:51, Herminio Hernandez, Jr. < >> herminio.hernande...@gmail.com> wrote: >> >>> I have already applied his patches on my PowerBook running Jessie to get >>> accelerated graphics. However they are only a work around and not a real >>> fix so they will be committed to mesa. >>> >>> On Fri, Feb 5, 2016 at 8:44 AM, Mike <michael.hel...@gmail.com> wrote: >>> >>>> Herminio, >>>> >>>> Ok, take a look at this. >>>> https://github.com/threader/mesa-11.1.1-ppc-r300-debian or if on >>>> stable maybe this is more fitting >>>> https://github.com/threader/mesa-10.6.3-ppc-r300-debian - this only >>>> fixes the issue for r300 on powerpc though. >>>> >>>> On 5 February 2016 at 14:32, Herminio Hernandez Jr. < >>>> herminio.hernande...@gmail.com> wrote: >>>> >>>>> I have been experiencing the same thing with my iBook and PowerBook. >>>>> >>>>> Sent from my iPhone >>>>> >>>>> On Feb 4, 2016, at 8:47 PM, Mike <michael.hel...@gmail.com> wrote: >>>>> >>>>> Hi. >>>>> Managed to get the Radeon R300 running on mesa 11.1.1 with an old 2013 >>>>> patch from Michel Dànzer, next problem is of course enabling agpmode, >>>>> running with pci-mode with radeon.agpmode=-1 works, but is of course slow, >>>>> and seems to load the cpu a lot. >>>>> >>>>> Upon initial investigation i could not initially believe agp could be >>>>> this this broken for this long, until i found this. >>>>> "committed with Ben Skeggs on Feb 26, 2013" >>>>> >>>>> https://github.com/DespairFactor/bullhead/commit/650e1203c11354ba84d69ba445abc0efcfe3890a >>>>> >>>>> http://lxr.free-electrons.com/source/drivers/gpu/drm/nouveau/nouveau_agp.c?v=4.2 >>>>> #ifdef __powerpc__ >>>>> /* Disable AGP by default on all PowerPC machines for >>>>> * now -- At least some UniNorth-2 AGP bridges are >>>>> * known to be broken: DMA from the host to the card >>>>> * works just fine, but writeback from the card to the >>>>> * host goes straight to memory untranslated bypassing >>>>> * the GATT somehow, making them quite painful to deal >>>>> * with... >>>>> */ >>>>> if (nouveau_agpmode == -1) >>>>> return false; >>>>> #endif >>>>> >>>>> and now later this: >>>>> >>>>> https://github.com/torvalds/linux/blob/master/drivers/gpu/drm/nouveau/nvkm/subdev/pci/agp.c >>>>> #ifdef __powerpc__ >>>>> /* Disable AGP by default on all PowerPC machines for now -- At >>>>> * least some UniNorth-2 AGP bridges are known to be broken: >>>>> * DMA from the host to the card works just fine, but writeback >>>>> * from the card to the host goes straight to memory >>>>> * untranslated bypassing that GATT somehow, making them quite >>>>> * painful to deal with... >>>>> */ >>>>> mode = 0; >>>>> #endif >>>>> >>>>> All seems to point to serious issues had around the time of change to >>>>> ums to kms and a serious regression hitting the linux kernel? No? >>>>> >>>>> Cheers >>>>> -Mike >>>>> >>>>> _______________________________________________ >>>>> Linuxppc-dev mailing list >>>>> Linuxppc-dev@lists.ozlabs.org >>>>> https://lists.ozlabs.org/listinfo/linuxppc-dev >>>>> >>>>> >>>> >>> >> >
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