2.6.39.3 radeon crash when firmware loading fails

[Marek Gleń]

On Tue, 19 Jul 2011 at 14:41:07 +0200, Frank van Maarseveen wrote:
> When booting 2.6.39.3 with radeon and KMS enabled the boot messages
> stop at some point (clocksource switching to TSC or something) and
> about 60 seconds later the screen turns into a noise pattern with some
> irregularities on top (i.e. crash).
> 
> This happens when the radeon driver is built-in.
> 
> This can be triggered too when it is a module by "insmod radeon.ko"
> when there is no provision to automatically load firmware (e.g via
> /sbin/hotplug). The insmod hangs for `cat /sys/class/firmware/timeout`
> seconds (default 60) and after that it crashes with identical
> symptoms. When /sbin/hotplug is present for loading firmware
> (radeon/RV620_pfp.bin, radeon/RV620_me.bin, radeon/R600_rlc.bin in this
> case) then all goes well.

I think you want to have CONFIG_FIRMWARE_IN_KERNEL set to not depend on
userspace to load firmware.

Can you provide dmesg of this crash?

> Because of this it is not possible to use a built-in radeon driver with
> KMS enabled.
> 
> 
> lspci -vv:
> 
> 01:00.0 VGA compatible controller: ATI Technologies Inc RV620 LE [Radeon HD 3450] (prog-if 00 [VGA controller])
>         Subsystem: Dell Device 0342
>         Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
>         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>         Latency: 0, Cache Line Size: 64 bytes
>         Interrupt: pin A routed to IRQ 16
>         Region 0: Memory at e0000000 (64-bit, prefetchable) [size=256M]
>         Region 2: Memory at f7df0000 (64-bit, non-prefetchable) [size=64K]
>         Region 4: I/O ports at dc00 [size=256]
>         Expansion ROM at f7e00000 [disabled] [size=128K]
>         Capabilities: [50] Power Management version 3
>                 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                 Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>         Capabilities: [58] Express (v2) Legacy Endpoint, MSI 00
>                 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <4us, L1 unlimited
>                         ExtTag+ AttnBtn- AttnInd- PwrInd- 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 #0, Speed 2.5GT/s, Width x16, 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 x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
>                 DevCap2: Completion Timeout: Not Supported, TimeoutDis-
>                 DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
>                 LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
>                          Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
>                          Compliance De-emphasis: -6dB
>                 LnkSta2: Current De-emphasis Level: -6dB
>         Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+
>                 Address: 0000000000000000  Data: 0000
>         Capabilities: [100 v1] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
>         Kernel driver in use: radeon
>