Regression 2.6.34->2.6.35-rc4: radeaon KMS an RS690 broken

Tue Jul 13 13:12:19 PDT 2010

On Tue, Jul 13, 2010 at 9:10 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
> On Tue, Jul 13, 2010 at 2:29 PM, Torsten Kaiser
> <just.for.lkml at googlemail.com> wrote:
>> On Mon, Jul 12, 2010 at 11:38 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
>>> On Mon, Jul 12, 2010 at 3:54 PM, Torsten Kaiser
>>> <just.for.lkml at googlemail.com> wrote:
>>>> 0888e883ea5ff8fac27e813256d6c1eaede5a234 is the first bad commit
>>>> commit 0888e883ea5ff8fac27e813256d6c1eaede5a234
>>>> Author: Alex Deucher <alexdeucher at gmail.com>
>>>> Date:   Sat Jun 12 11:50:13 2010 -0400
>>>>
>>>>    drm/radeon/kms: fix bandwidth calculation when sideport is present
>>>>
>>>>    Fixes fdo bug 27529:
>>>>    https://bugs.freedesktop.org/show_bug.cgi?id=27529
>>>>
>>>>    Reported-by: steckdenis at yahoo.fr
>>>>    Signed-off-by: Alex Deucher <alexdeucher at gmail.com>
>>>>    Signed-off-by: Dave Airlie <airlied at redhat.com>
>>>>
>>>> :040000 040000 2ff9114469e4569e1bebd659c9632c5b59bfc238
>>>> b0eb9a29c698da1eeb8289ba1180b8135a94ecd7 M     drivers
>>>>
>>>> My system does not have any sideport memory.
>>>> The other revisions before this did boot into the correct KMS mode,
>>>> but I did not test X, because I'm using that system as a remote
>>>> desktop server and only sometimes the fb text console to debug
>>>> something that went wrong.
>>
>> From the other mail:
>> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=f892034a8ce80ed7098f667aae2eb6300e570603
>> is part of vanilla 2.6.35-rc4 and -rc5, but neither kernel works for
>> me.
>>
>>> Does this patch help?
>> (0001-drm-radeon-kms-fix-possible-mis-detection-of-sidepor.patch)
>>
>> After adding this to 2.6.35-rc5 the system boots and works so far.
>
> I've sent the patch to Dave.

OK, thanks.

>> But the CP is still broken:
>
> Is this a regression?  If so, can you bisect it?

Yes. But looking at my logs the regression did not happen from
2.6.34->2.6.35 but from 2.6.33 to 2.6.34.
The first failed ring test was with the Gentoo 2.6.34 kernel, but all
the working bisect steps between 2.6.34 and 2.6.35-rc4 also failed.

I will try to bisect this tomorrow, but I'm not sure if this will
work, because 2.6.34 is not really working for me.
( https://bugzilla.kernel.org/show_bug.cgi?id=16371 )

Torsten

>> [    0.426931] Linux agpgart interface v0.103
>> [    0.427092] [drm] Initialized drm 1.1.0 20060810
>> [    0.427196] [drm] radeon defaulting to kernel modesetting.
>> [    0.427255] [drm] radeon kernel modesetting enabled.
>> [    0.427372] radeon 0000:01:05.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
>> [    0.429659] [drm] initializing kernel modesetting (RS690 0x1002:0x791E).
>> [    0.429817] [drm] register mmio base: 0xFE9F0000
>> [    0.429876] [drm] register mmio size: 65536
>> [    0.430457] ATOM BIOS: ATI
>> [    0.430532] radeon 0000:01:05.0: VRAM: 32M 0xDE000000 - 0xDFFFFFFF (32M used)
>> [    0.430592] radeon 0000:01:05.0: GTT: 512M 0xBE000000 - 0xDDFFFFFF
>> [    0.430675] [drm] radeon: irq initialized.
>> [    0.430737] mtrr: type mismatch for fc000000,2000000 old:
>> write-back new: write-comb
>> ining
>> [    0.430811] [drm] Detected VRAM RAM=32M, BAR=32M
>> [    0.430868] [drm] RAM width 128bits DDR
>> [    0.431011] [TTM] Zone  kernel: Available graphics memory: 2010234 kiB.
>> [    0.431070] [TTM] Initializing pool allocator.
>> [    0.431147] [drm] radeon: 32M of VRAM memory ready
>> [    0.431205] [drm] radeon: 512M of GTT memory ready.
>> [    0.431266] [drm] GART: num cpu pages 131072, num gpu pages 131072
>> [    0.434654] [drm] radeon: 1 quad pipes, 1 z pipes initialized.
>> [    0.441719] [drm] Loading RS690/RS740 Microcode
>> [    0.441926] [drm] radeon: ring at 0x00000000BE000000
>> [    0.577118] [drm:r100_ring_test] *ERROR* radeon: ring test failed
>> (sracth(0x15E4)=0x
>> CAFEDEAD)
>> [    0.577192] [drm:r100_cp_init] *ERROR* radeon: cp isn't working (-22).
>> [    0.577252] radeon 0000:01:05.0: failled initializing CP (-22).
>> [    0.577310] radeon 0000:01:05.0: Disabling GPU acceleration
>> [    0.577440] [drm] radeon: cp finalized
>> [    0.578078] [drm] Default TV standard: NTSC
>> [    0.578314] [drm] Default TV standard: NTSC
>> [    0.578590] [drm] Radeon Display Connectors
>> [    0.578648] [drm] Connector 0:
>> [    0.578706] [drm]   VGA
>> [    0.578764] [drm]   DDC: 0x7e50 0x7e40 0x7e54 0x7e44 0x7e58 0x7e48
>> 0x7e5c 0x7e4c
>> [    0.578837] [drm]   Encoders:
>> [    0.578894] [drm]     CRT1: INTERNAL_KLDSCP_DAC1
>> [    0.578952] [drm] Connector 1:
>> [    0.579010] [drm]   S-video
>> [    0.579067] [drm]   Encoders:
>> [    0.579124] [drm]     TV1: INTERNAL_KLDSCP_DAC1
>> [    0.579182] [drm] Connector 2:
>> [    0.579239] [drm]   HDMI-A
>> [    0.579297] [drm]   DDC: 0x7e40 0x7e50 0x7e44 0x7e54 0x7e48 0x7e58
>> 0x7e4c 0x7e5c
>> [    0.579369] [drm]   Encoders:
>> [    0.579427] [drm]     DFP3: INTERNAL_LVTM1
>> [    0.773375] [drm] fb mappable at 0xFC040000
>> [    0.773434] [drm] vram apper at 0xFC000000
>> [    0.773491] [drm] size 786432
>> [    0.773549] [drm] fb depth is 8
>> [    0.773606] [drm]    pitch is 1024
>> [    0.773737] fbcon: radeondrmfb (fb0) is primary device
>> [    0.793240] Console: switching to colour frame buffer device 128x48
>> [    0.794833] fb0: radeondrmfb frame buffer device
>> [    0.794852] drm: registered panic notifier
>> [    0.794871] Slow work thread pool: Starting up
>> [    0.794932] Slow work thread pool: Ready
>> [    0.794953] [drm] Initialized radeon 2.5.0 20080528 for
>> 0000:01:05.0 on minor 0
>>
>>
>> Torsten
>>
>