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

[Stefan Bader <stefan.bader@xxxxxxxxxxxxx>]

On 08.08.2013 13:49, Jan Beulich wrote:
>>>> On 08.08.13 at 13:12, Stefan Bader <stefan.bader@xxxxxxxxxxxxx> wrote:
>> On 07.08.2013 10:33, Stefan Bader wrote:
>> So I went ahead and modified Suravee's patch according to what I think Jan 
>> was suggesting.
> 
> Mostly.
> 
>> This seems to be working and preventing the messages without 
>> showing any immediately visible problems.
> 
> 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).
> 
> Jan
> 

Not sure whether I confuse things here. Would the VGA card be what you meant?

-Stefan

-[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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