linux-kernel - RE: Supermicro X9SRL-F - channel enumeration error & ACPI/firmware bug question

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Date:	Wed, 28 Nov 2012 19:49:32 -0500
From:	"Justin Piszcz" <jpiszcz@...idpixels.com>
To:	"'Robert Hancock'" <hancockrwd@...il.com>
Cc:	"'Bjorn Helgaas'" <bhelgaas@...gle.com>,
	'Bruno Prémont' <bonbons@...ux-vserver.org>,
	<support@...ermicro.com>, <linux-kernel@...r.kernel.org>,
	"'Dan Williams'" <djbw@...com>
Subject: RE: Supermicro X9SRL-F - channel enumeration error & ACPI/firmware bug question



-----Original Message-----
From: Robert Hancock [mailto:hancockrwd@...il.com] 
Sent: Wednesday, November 28, 2012 7:35 PM
To: Justin Piszcz
Cc: 'Bjorn Helgaas'; 'Bruno Prémont'; support@...ermicro.com;
linux-kernel@...r.kernel.org; 'Dan Williams'
Subject: Re: Supermicro X9SRL-F - channel enumeration error & ACPI/firmware
bug question


What does lspci -vv show on that controller? Not sure what actual 
chipset that controller is, but there's a known issue with some Marvell 
6Gbps SATA controllers with DMAR enabled - it seems the device issues 
memory read/write requests from the wrong PCI function ID and the IOMMU 
rightly denies access as the function listed in the requests doesn't 
have any mapping to that memory. I don't think there's presently a 
workaround other than disabling DMAR. We could (and likely should) be 
detecting that device and adding some kind of quirk for it.

That sounds likely...
It is shown below:

Card name: HighPoint Rocket 620 Dual Port SATA 6 Gbps PCI Express 2.0 Host
Adapter

lspci -vv output:

84:00.0 SATA controller: Marvell Technology Group Ltd. 88SE9123 PCIe SATA
6.0 Gb/s controller (rev 11) (prog-if 01 [AHCI 1.0])
  Subsystem: Marvell Technology Group Ltd. 88SE9123 PCIe SATA 6.0 Gb/s
controller
  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: 256 bytes
  Interrupt: pin A routed to IRQ 119
  Region 0: I/O ports at e000 [size=8]
  Region 1: I/O ports at dc00 [size=4]
  Region 2: I/O ports at ec00 [size=8]
  Region 3: I/O ports at e800 [size=4]
  Region 4: I/O ports at e400 [size=16]
  Region 5: Memory at cfeee000 (32-bit, non-prefetchable) [size=2K]
  Expansion ROM at cfef0000 [disabled] [size=64K]
  Capabilities: [40] 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: [50] MSI: Enable+ Count=1/1 Maskable- 64bit-
    Address: fee20000  Data: 4076
  Capabilities: [70] Express (v2) Legacy Endpoint, MSI 00
    DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s <1us, L1 <8us
      ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
    DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
      RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
      MaxPayload 256 bytes, MaxReadReq 512 bytes
    DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr- TransPend-
    LnkCap: Port #0, Speed 5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns,
L1 <64us
      ClockPM- Surprise- LLActRep- BwNot-
    LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
      ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
    LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt-
ABWMgmt-
    DevCap2: Completion Timeout: Not Supported, TimeoutDis+
    DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
    LnkCtl2: Target Link Speed: 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, EqualizationComplete-,
EqualizationPhase1-
       EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
  Capabilities: [100 v1] Advanced Error Reporting
    UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF-
MalfTLP- ECRC- UnsupReq- ACSViol-
    UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF-
MalfTLP- ECRC- UnsupReq- ACSViol-
    UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+
MalfTLP+ ECRC- UnsupReq- ACSViol-
    CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
    CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
    AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
  Kernel driver in use: ahci

>
> --
>
>
> ==> Further issues with the X9SRL-F -- does this board support ASPM or is
> this a Linux/ASPM implementation issue?
> [    0.632170]  pci0000:ff: ACPI _OSC support notification failed,
disabling
> PCIe ASPM
> [    0.632239]  pci0000:ff: Unable to request _OSC control (_OSC support
> mask: 0x08)

What's the full dmesg from this machine (or is it already posted somewhere)?

It is now available here:
http://home.comcast.net/~jpiszcz/20121128/dmesg.txt

Justin.


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