PCI Radeon RV100 detection hang on sparc64

[Kjetil Oftedal]

On 27 August 2014 04:24, Michel Dänzer <michel at daenzer.net> wrote:
> On 26.08.2014 16:07, Meelis Roos wrote:
>>>>>
>>>>> r100 init hangs in a different place. Original dmesg first, then my
>>>>> instrumented dmesg (seems to get further):
>>>>
>>>>
>>>> The instrumented dmesg had a couple of my local test changes and was
>>>> bad now that I had ROM. Reverted them exept my readb changes (instead
>>>> of direct dereferences of iomapped space) and redid
>>>> logging to be more precise.
>>>>
>>>>> [drm] radeon kernel modesetting enabled.
>>>>> PCI: Enabling device: (0000:02:02.0), cmd 82
>>>>> [drm] initializing kernel modesetting (RV100 0x1002:0x5159
>>>>> 0x1002:0x0908).
>>>>> [drm] register mmio base: 0x10000000
>>>>> [drm] register mmio size: 32768
>>>>> [drm:radeon_device_init] *ERROR* Unable to find PCI I/O BAR
>>>>
>>>>
>>>> This was still the unchanged kernel hanging.
>>>>
>>>> Below is a new debug log to pinpoint the hang. It seems to hang in
>>>> r100_gfx_get_rptr but not on first try.
>>>
>>>
>>> It's most likely hanging in readl() in r100_mm_rreg() then.
>>
>>
>> Yes, it is doing direct readl() there. But what does this hang mean?
>
>
> I'm not sure if the read can hang because of the GPU, or if indicates a more
> fundamental PCI issue. Dave?
>
>
>
>> By the way, I get these warnings from r100. Seem to be unrelated but
>> still worth reporting IMHO:
>
>
> Looks unrelated indeed.
>
>
>
> --
> Earthling Michel Dänzer            |                  http://www.amd.com
> Libre software enthusiast          |                Mesa and X developer

Hi,

Just a short question regarding the test setup.
Is the video card a Sun XVR-100 or is it a vanilla ATI RV100 ?
(If it is a vanilla RV100 there might be some kind of initialization issue
as the video ROM is not executed during boot?)

Regards,
Kjetil Oftedal