Yeah that is the thread I am on On Fri, Feb 5, 2016 at 1:44 PM, Mike <michael.hel...@gmail.com> wrote:
> 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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