Re: [Xen-devel] [PATCH 1/1] x86/AMD: Fix setup ssss:bb:dd:f for d0 failed

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 08.08.13 at 14:07, Stefan Bader <stefan.bader@xxxxxxxxxxxxx> wrote:
> On 08.08.2013 13:49, Jan Beulich wrote:
>> Question is - did you in particular try with a legacy PCI device
>> behind a legacy PCI bridge? That's the main scenario where the
>> bridge not having got mapped could result in problems (see my
>> other reply to Suravee on this thread).
> 
> Not sure whether I confuse things here. Would the VGA card be what you 
> meant?

If the output you provided was complete, then this really seems to
be a legacy PCI device, so yes. But please realize that this working
for you is not a guarantee that it's working in general - whether
requests get forwarded by legacy bridges with the original requester
ID or the bridge's is subject to the bridge implementation afaik. So a
theoretical answer is going to be needed here anyway... But thanks
for clarifying!

Jan

> -[0000:00]-+-00.0  Advanced Micro Devices, Inc. [AMD/ATI] RD890 PCI to PCI 
> bridg
> e (external gfx0 port A) [1002:5a13]
>            ...
>            +-14.4-[04]----04.0  Matrox Electronics Systems Ltd. MGA G200eW
> WPCM450 [102b:0532]
> 
> 00:14.4 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 PCI 
> to
> PCI Bridge [1002:4384] (prog-if 01 [Subtractive 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=04, subordinate=04, sec-latency=64
>       I/O behind bridge: 0000f000-00000fff
>       Memory behind bridge: fdf00000-fe7fffff
>       Prefetchable memory behind bridge: fc000000-fcffffff
>       Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
> <TAbort-
> <MAbort+ <SERR- <PERR-
>       BridgeCtl: Parity- SERR+ NoISA- VGA+ MAbort- >Reset- FastB2B-
>               PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
> 
> 04:04.0 VGA compatible controller [0300]: Matrox Electronics Systems Ltd. 
> MGA
> G200eW WPCM450 [102b:0532] (rev 0a) (prog-if 00 [VGA controller])
>       Subsystem: Super Micro Computer Inc Device [15d9:a711]
>       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 (4000ns min, 8000ns max), Cache Line Size: 64 bytes
>       Interrupt: pin A routed to IRQ 10
>       Region 0: Memory at fc000000 (32-bit, prefetchable) [size=16M]
>       Region 1: Memory at fdffc000 (32-bit, non-prefetchable) [size=16K]
>       Region 2: Memory at fe000000 (32-bit, non-prefetchable) [size=8M]
>       Expansion ROM at <unassigned> [disabled]
>       Capabilities: [dc] Power Management version 1
>               Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA 
> PME(D0-,D1-,D2-,D3hot-,D3cold-)
>               Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-




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