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

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On Sun, Jul 11, 2010 at 3:56 PM, Torsten Kaiser
<just.for.lkml@xxxxxxxxxxxxxx> wrote:
> I just tried 2.6.35-rc4 to see, if a different bug is fixed, but noted
> that this kernel will only boot with radeon.modeset=0.
>
> If KMS is active the display turns off and the system is completely
> dead, not even SysRq+B is working.
>
> I build a new kernel with the radeon driver as a module and inserted
> it by hand via ssh.
> The ssh session, I was using has this output:
> ariolc drm # insmod ./drm_kms_helper.ko
> ariolc drm # insmod ttm/ttm.ko
> ariolc drm # insmod radeon/radeon.ko
> Segmentation fault
> ariolc drm #
>
> The final insmod segfaulted, the shell was displaying a new prompt,
> but not new input was possible.
> The system still reacted to ping and trying to create a new ssh
> connection resulted in a password prompt, but after entering the
> password no shell was provided.
> I tried SysRq+S, SysRq+U and SysRq+B, but not visible result. After a
> reboot I did not find any additional information in /var/log/messages.
> The effect was like the boot time failures with a builtin radeon
> driver: The display (attached to the VGA output) just turns off.
>
> But I had a second ssh connection open, doing tail -f /var/log/messages:
> Jul 11 21:30:23 ariolc kernel: [  131.720470] [drm] radeon defaulting
> to kernel modesetting.
> Jul 11 21:30:23 ariolc kernel: [  131.720477] [drm] radeon kernel
> modesetting enabled.
> Jul 11 21:30:23 ariolc kernel: [  131.720623] radeon 0000:01:05.0: PCI
> INT A -> GSI 18 (level, low) -> IRQ 18
> Jul 11 21:30:23 ariolc kernel: [  131.726859] [drm] initializing
> kernel modesetting (RS690 0x1002:0x791E).
> Jul 11 21:30:23 ariolc kernel: [  131.728607] [drm] register mmio
> base: 0xFE9F0000
> Jul 11 21:30:23 ariolc kernel: [  131.728613] [drm] register mmio
> size: 65536
> Jul 11 21:30:23 ariolc kernel: [  131.729591] ATOM BIOS: ATI
> Jul 11 21:30:23 ariolc kernel: [  131.729625] radeon 0000:01:05.0:
> VRAM: 32M 0xDE000000 - 0xDFFFFFFF (32M used)
> Jul 11 21:30:23 ariolc kernel: [  131.729632] radeon 0000:01:05.0:
> GTT: 512M 0xBE000000 - 0xDDFFFFFF
> Jul 11 21:30:23 ariolc kernel: [  131.729675] [drm] radeon: irq initialized.
> Jul 11 21:30:23 ariolc kernel: [  131.729690] mtrr: type mismatch for
> fc000000,2000000 old: write-back new: write-combining
> Jul 11 21:30:23 ariolc kernel: [  131.729696] [drm] Detected VRAM
> RAM=32M, BAR=32M
> Jul 11 21:30:23 ariolc kernel: [  131.729701] [drm] RAM width 128bits DDR
> Jul 11 21:30:23 ariolc kernel: [  131.729796] [TTM] Zone  kernel:
> Available graphics memory: 2010998 kiB.
> Jul 11 21:30:23 ariolc kernel: [  131.729802] [TTM] Initializing pool allocator.
> Jul 11 21:30:23 ariolc kernel: [  131.729841] [drm] radeon: 32M of
> VRAM memory ready
> Jul 11 21:30:23 ariolc kernel: [  131.729846] [drm] radeon: 512M of
> GTT memory ready.
> Jul 11 21:30:23 ariolc kernel: [  131.729857] [drm] GART: num cpu
> pages 131072, num gpu pages 131072
> Jul 11 21:30:23 ariolc kernel: [  131.736223] [drm] radeon: 1 quad
> pipes, 1 z pipes initialized.
> Jul 11 21:30:23 ariolc kernel: [  131.752553] [drm] Loading
> RS690/RS740 Microcode
> Jul 11 21:30:23 ariolc kernel: [  131.911461] [drm] radeon: ring at
> 0x00000000BE000000
> Jul 11 21:30:23 ariolc kernel: [  132.055912] [drm:r100_ring_test]
> *ERROR* radeon: ring test failed (sracth(0x15E4)=0xCAFEDEAD)
> Jul 11 21:30:23 ariolc kernel: [  132.055918] [drm:r100_cp_init]
> *ERROR* radeon: cp isn't working (-22).
> Jul 11 21:30:23 ariolc kernel: [  132.055925] radeon 0000:01:05.0:
> failled initializing CP (-22).
> Jul 11 21:30:23 ariolc kernel: [  132.055929] radeon 0000:01:05.0:
> Disabling GPU acceleration
> Jul 11 21:30:23 ariolc kernel: [  132.056174] [drm] radeon: cp finalized
> Jul 11 21:30:23 ariolc kernel: [  132.057378] [drm] Default TV standard: NTSC
> Jul 11 21:30:23 ariolc kernel: [  132.058671] [drm] Default TV standard: NTSC
> Jul 11 21:30:23 ariolc kernel: [  132.059748] [drm] Radeon Display Connectors
> Jul 11 21:30:23 ariolc kernel: [  132.059753] [drm] Connector 0:
> Jul 11 21:30:23 ariolc kernel: [  132.059756] [drm]   VGA
> Jul 11 21:30:23 ariolc kernel: [  132.059763] [drm]   DDC: 0x7e50
> 0x7e40 0x7e54 0x7e44 0x7e58 0x7e48 0x7e5c 0x7e4c
> Jul 11 21:30:23 ariolc kernel: [  132.059766] [drm]   Encoders:
> Jul 11 21:30:23 ariolc kernel: [  132.059770] [drm]     CRT1:
> INTERNAL_KLDSCP_DAC1
> Jul 11 21:30:23 ariolc kernel: [  132.059773] [drm] Connector 1:
> Jul 11 21:30:23 ariolc kernel: [  132.059776] [drm]   S-video
> Jul 11 21:30:23 ariolc kernel: [  132.059778] [drm]   Encoders:
> Jul 11 21:30:23 ariolc kernel: [  132.059781] [drm]     TV1:
> INTERNAL_KLDSCP_DAC1
> Jul 11 21:30:23 ariolc kernel: [  132.059784] [drm] Connector 2:
> Jul 11 21:30:23 ariolc kernel: [  132.059787] [drm]   HDMI-A
> Jul 11 21:30:23 ariolc kernel: [  132.059792] [drm]   DDC: 0x7e40
> 0x7e50 0x7e44 0x7e54 0x7e48 0x7e58 0x7e4c 0x7e5c
> Jul 11 21:30:23 ariolc kernel: [  132.059795] [drm]   Encoders:
> Jul 11 21:30:23 ariolc kernel: [  132.059798] [drm]     DFP3: INTERNAL_LVTM1
> Jul 11 21:30:23 ariolc kernel: [  132.253484] [drm] fb mappable at 0xFC040000
> Jul 11 21:30:23 ariolc kernel: [  132.253488] [drm] vram apper at 0xFC000000
> Jul 11 21:30:23 ariolc kernel: [  132.253489] [drm] size 786432
> Jul 11 21:30:23 ariolc kernel: [  132.253491] [drm] fb depth is 8
> Jul 11 21:30:23 ariolc kernel: [  132.253492] [drm]    pitch is 1024
> Jul 11 21:30:23 ariolc kernel: [  132.253880] fbcon: radeondrmfb (fb0)
> is primary device
>
> Hardware info: (lspci -vv from 2.6.33)
> 00:00.0 Host bridge: ATI Technologies Inc RS690 Host Bridge
>        Subsystem: ATI Technologies Inc RS690 Host Bridge
>        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
> ParErr- Stepping- SERR- FastB2B- DisINTx-
>        Status: Cap- 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium
>>TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
>        Latency: 0
>
> 00:01.0 PCI bridge: ATI Technologies Inc RS690 PCI to PCI Bridge
> (Internal gfx) (prog-if 00 [Normal decode])
>        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
> ParErr- Stepping- SERR+ FastB2B- DisINTx-
>        Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium
>>TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>        Latency: 64
>        Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
>        I/O behind bridge: 0000c000-0000cfff
>        Memory behind bridge: fe800000-fe9fffff
>        Prefetchable memory behind bridge: 00000000fc000000-00000000fdffffff
>        Secondary status: 66MHz+ FastB2B- ParErr- DEVSEL=medium
>>TAbort- <TAbort- <MAbort- <SERR- <PERR-
>        BridgeCtl: Parity- SERR+ NoISA- VGA+ MAbort- >Reset- FastB2B-
>                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
>        Capabilities: [44] HyperTransport: MSI Mapping Enable+ Fixed+
>        Capabilities: [b0] Subsystem: ATI Technologies Inc RS690 PCI
> to PCI Bridge (Internal gfx)
>
> 00:07.0 PCI bridge: ATI Technologies Inc RS690 PCI to PCI Bridge (PCI
> Express Port 3) (
> prog-if 00 [Normal decode])
>        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
> ParErr- Stepping- S
> ERR+ FastB2B- DisINTx+
>        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
> <TAbort- <MAbort
> - >SERR- <PERR- INTx-
>        Latency: 0, Cache Line Size: 64 bytes
>        Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
>        I/O behind bridge: 0000d000-0000dfff
>        Memory behind bridge: fea00000-feafffff
>        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort-
> <TAbort- <MAbort
> - <SERR- <PERR-
>        BridgeCtl: Parity+ SERR+ NoISA- VGA- MAbort- >Reset- FastB2B-
>                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
>        Capabilities: [50] Power Management version 3
>                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
> PME(D0+,D1-,D2-,D3hot+,D3col
> d+)
>                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>        Capabilities: [58] Express (v1) Root Port (Slot+), MSI 00
>                DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s
> <64ns, L1 <1us
>                        ExtTag+ RBE+ FLReset-
>                DevCtl: Report errors: Correctable- Non-Fatal- Fatal-
> Unsupported-
>                        RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
>                        MaxPayload 128 bytes, MaxReadReq 128 bytes
>                DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq-
> AuxPwr- TransPend-
>                LnkCap: Port #4, Speed 2.5GT/s, Width x1, ASPM L0s L1,
> Latency L0 <64ns, L1 <1us
>                        ClockPM- Surprise- LLActRep+ BwNot-
>                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
>                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
>                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train-
> SlotClk+ DLActive+ BWMgmt- ABWMgmt-
>                SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd-
> HotPlug- Surpise-
>                        Slot #  6, PowerLimit 25.000000; Interlock- NoCompl-
>                SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet-
> CmdCplt- HPIrq- LinkChg-
>                        Control: AttnInd Off, PwrInd Off, Power- Interlock-
>                SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt-
> PresDet+ Interlock-
>                        Changed: MRL- PresDet+ LinkState-
>                RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal-
> PMEIntEna- CRSVisible-
>                RootCap: CRSVisible-
>                RootSta: PME ReqID 0000, PMEStatus- PMEPending-
>        Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
>                Address: fee0300c  Data: 4149
>        Capabilities: [b0] Subsystem: ATI Technologies Inc RS690 PCI
> to PCI Bridge
>        Capabilities: [b8] HyperTransport: MSI Mapping Enable+ Fixed+
>        Capabilities: [100] Virtual Channel <?>
>        Kernel driver in use: pcieport
>
> KMS was working stable on 2.6.33 and seems to work on 2.6.34 (Not
> really tested, because 2.6.34 is not working for me, but I'm not sure
> if that is KMS related)
>
> Output from working KMS in 2.6.33:
> [    0.385804] [drm] Initialized drm 1.1.0 20060810
> [    0.385896] [drm] radeon defaulting to kernel modesetting.
> [    0.385955] [drm] radeon kernel modesetting enabled.
> [    0.386066] radeon 0000:01:05.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
> [    0.388388] [drm] radeon: Initializing kernel modesetting.
> [    0.388534] [drm] register mmio base: 0xFE9F0000
> [    0.388593] [drm] register mmio size: 65536
> [    0.389106] ATOM BIOS: ATI
> [    0.389374] [drm] GPU reset succeed (RBBM_STATUS=0x10000140)
> [    0.389436] [drm] radeon: VRAM 32M
> [    0.389495] [drm] radeon: VRAM from 0xDE000000 to 0xDFFFFFFF
> [    0.389554] [drm] radeon: GTT 512M
> [    0.389612] [drm] radeon: GTT from 0x00000000 to 0x1FFFFFFF
> [    0.389688] radeon 0000:01:05.0: irq 25 for MSI/MSI-X
> [    0.389692] [drm] radeon: using MSI.
> [    0.389766] [drm] radeon: irq initialized.
> [    0.389828] mtrr: type mismatch for fc000000,2000000 old:
> write-back new: write-combining
> [    0.389902] [drm] Detected VRAM RAM=32M, BAR=32M
> [    0.389960] [drm] RAM width 128bits DDR
> [    0.390238] [TTM] Zone  kernel: Available graphics memory: 2010380 kiB.
> [    0.390313] [drm] radeon: 32M of VRAM memory ready
> [    0.390372] [drm] radeon: 512M of GTT memory ready.
> [    0.390431] [drm] GART: num cpu pages 131072, num gpu pages 131072
> [    0.393504] [drm] radeon: 1 quad pipes, 1 z pipes initialized.
> [    0.393568] [drm] radeon: cp idle (0x10000C03)
> [    0.393691] [drm] Loading RS690/RS740 Microcode
> [    0.393751] platform radeon_cp.0: firmware: using built-in firmware
> radeon/RS690_cp.bin
> [    0.393964] [drm] radeon: ring at 0x0000000000000000
> [    0.394039] [drm] ring test succeeded in 1 usecs
> [    0.394180] [drm] radeon: ib pool ready.
> [    0.394249] [drm] ib test succeeded in 0 usecs
> [    0.394454] [drm] Default TV standard: NTSC
> [    0.394690] [drm] Radeon Display Connectors
> [    0.394749] [drm] Connector 0:
> [    0.394807] [drm]   VGA
> [    0.394865] [drm]   DDC: 0x7e50 0x7e40 0x7e54 0x7e44 0x7e58 0x7e48
> 0x7e5c 0x7e4c
> [    0.394938] [drm]   Encoders:
> [    0.394996] [drm]     CRT1: INTERNAL_KLDSCP_DAC1
> [    0.395055] [drm] Connector 1:
> [    0.395112] [drm]   S-video
> [    0.395169] [drm]   Encoders:
> [    0.395227] [drm]     TV1: INTERNAL_KLDSCP_DAC1
> [    0.395285] [drm] Connector 2:
> [    0.395343] [drm]   HDMI-A
> [    0.395401] [drm]   DDC: 0x7e40 0x7e50 0x7e44 0x7e54 0x7e48 0x7e58
> 0x7e4c 0x7e5c
> [    0.395474] [drm]   Encoders:
> [    0.395532] [drm]     DFP3: INTERNAL_LVTM1
> [    0.593345] [drm] fb mappable at 0xFC040000
> [    0.593404] [drm] vram apper at 0xFC000000
> [    0.593462] [drm] size 786432
> [    0.593519] [drm] fb depth is 8
> [    0.593576] [drm]    pitch is 1024
> [    0.615713] Console: switching to colour frame buffer device 128x48
> [    0.617300] fb0: radeondrmfb frame buffer device
> [    0.617319] registered panic notifier
> [    0.617337] [drm] Initialized radeon 2.0.0 20080528 for
> 0000:01:05.0 on minor 0
>
> Please ask, if I should provide more information or test something.

Can you bisect to see what commit broke it?

Alex
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