[PATCH v5 0/7] drm/mgag200: Implement VBLANK support

[Thomas Zimmermann]

Hi

Am 02.10.24 um 18:15 schrieb Luck, Tony:
>> Thanks for the bug report. Can you provide the output of 'sudo lspci
>> -vvv' for the graphics device?
> Thomas,
>
> Sure. Here's the output (run on the v6.11.0 kernel)

Thanks. It doesn't look much different from other systems. IRQ is also 
assigned.

Attached is a patch that fixes a possible off-by-one error in the 
register settings. This would affect the bug you're reporting. If 
possible, please apply the patch to your 6.12-rc1, test and report the 
result.

Best regards
Thomas

>
> $ sudo lspci -vvv -s 0000:08:00.0
> 08:00.0 VGA compatible controller: Matrox Electronics Systems Ltd. MGA G200e [Pilot] ServerEngines (SEP1) (rev 05) (prog-if 00 [VGA controller])
>          Subsystem: Intel Corporation Device 0103
>          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-
>          Interrupt: pin A routed to IRQ 16
>          Region 0: Memory at 90000000 (32-bit, prefetchable) [size=16M]
>          Region 1: Memory at 91800000 (32-bit, non-prefetchable) [size=16K]
>          Region 2: Memory at 91000000 (32-bit, non-prefetchable) [size=8M]
>          Expansion ROM at 91810000 [disabled] [size=64K]
>          Capabilities: [dc] Power Management version 2
>                  Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                  Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>          Capabilities: [e4] Express (v1) Legacy Endpoint, MSI 00
>                  DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
>                          ExtTag- AttnBtn- AttnInd- PwrInd- RBE- FLReset-
>                  DevCtl: CorrErr- NonFatalErr- FatalErr- UnsupReq-
>                          RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
>                          MaxPayload 128 bytes, MaxReadReq 128 bytes
>                  DevSta: CorrErr+ NonFatalErr- FatalErr- UnsupReq+ AuxPwr- TransPend-
>                  LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s, Exit Latency L0s <64ns
>                          ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp-
>                  LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk+
>                          ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
>                  LnkSta: Speed 2.5GT/s (ok), Width x1 (ok)
>                          TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
>          Capabilities: [54] MSI: Enable- Count=1/1 Maskable- 64bit-
>                  Address: 00000000  Data: 0000
>          Kernel driver in use: mgag200
>          Kernel modules: mgag200
>
> -Tony

-- 
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)
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