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Date: Tue, 3 Sep 2013 23:32:25 +0800
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Subject: Re: BCM57765: timeout waiting for hardware interrupt
From: Daniel J Blueman <daniel@quora.org>
To: Chris Ball <cjb@laptop.org>
Cc: "linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
        Linux Kernel <linux-kernel@vger.kernel.org>
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On 3 September 2013 19:04, Chris Ball <cjb@laptop.org> wrote:
> On Tue, Sep 03 2013, Daniel J Blueman wrote:
>> Please let me know if there's a better vector for reporting and
>> looking into this issue, if you can.
>
> Do you know whether it's ever worked on this hardware?  If so, could
> you try bisecting to find the first bad commit?

Yes; the card reader works when an ethernet cable is plugged into the
first PCI function on the chip, the Broadcom NIC (see comment #3):
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1067222

Google also use this in one of their Chromebook models:
https://groups.google.com/a/chromium.org/forum/#!msg/chromium-os-reviews/nwFj3KVQy_Y/FOckx1trSkUJ

> If not, I suspect it's going to be very difficult to debug/fix
> remotely, and we need to wait for someone who has the hardware and
> wants to create the fix.  (Or get the hardware into the hands of
> someone who's willing to take a look.)

Got hardware and willing to take a look; just was wanting some tips on
where to look with your experience of SDHCI/MMC.

Doing some further debugging, the card reader's parent device (the
NIC) is in D3 [1] while the card reader is in D0. I'll add the missing
device IDs to the tg3 driver and force it to bring the NIC into D0 and
see what happens.

Daniel

--- [1]

$ sudo lspci -s 3:0 -vv
03:00.0 Ethernet controller: Broadcom Corporation Device 16a3 (rev 10)
    Subsystem: Broadcom Corporation Device 16b4
    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 0
    Region 0: Memory at c1800000 (64-bit, prefetchable) [disabled] [size=64K]
    Region 2: Memory at c1810000 (64-bit, prefetchable) [disabled] [size=64K]
    Expansion ROM at c1830000 [disabled] [size=2K]
    Capabilities: [48] Power Management version 3
        Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0+,D1-,D2-,D3hot+,D3cold+)
        Status: D3 NoSoftRst+ PME-Enable- DSel=0 DScale=1 PME-
    Capabilities: [58] MSI: Enable- Count=1/8 Maskable- 64bit+
        Address: 0000000000000000  Data: 0000
    Capabilities: [a0] MSI-X: Enable- Count=6 Masked-
        Vector table: BAR=2 offset=00000000
        PBA: BAR=2 offset=00000120
    Capabilities: [ac] Express (v2) Endpoint, MSI 00
        DevCap:    MaxPayload 128 bytes, PhantFunc 0, Latency L0s <4us, L1 <64us
            ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
        DevCtl:    Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
            RlxdOrd+ ExtTag- PhantFunc- AuxPwr+ NoSnoop+
            MaxPayload 128 bytes, MaxReadReq 512 bytes
        DevSta:    CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
        LnkCap:    Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1,
Latency L0 <2us, L1 <64us
            ClockPM+ Surprise- LLActRep- BwNot-
        LnkCtl:    ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
            ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
        LnkSta:    Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+
DLActive- BWMgmt- ABWMgmt-
        DevCap2: Completion Timeout: Range ABCD, 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,
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-
    Capabilities: [13c v1] Device Serial Number 00-00-00-10-18-00-00-00
    Capabilities: [150 v1] Power Budgeting <?>
    Capabilities: [160 v1] Virtual Channel
        Caps:    LPEVC=0 RefClk=100ns PATEntryBits=1
        Arb:    Fixed- WRR32- WRR64- WRR128-
        Ctrl:    ArbSelect=Fixed
        Status:    InProgress-
        VC0:    Caps:    PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
            Arb:    Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
            Ctrl:    Enable+ ID=0 ArbSelect=Fixed TC/VC=ff
            Status:    NegoPending- InProgress-

03:00.1 SD Host controller: Broadcom Corporation NetXtreme BCM57765
Memory Card Reader (rev 10) (prog-if 01)
    Subsystem: Broadcom Corporation Device 96bc
    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 B routed to IRQ 17
    Region 0: Memory at c1820000 (64-bit, prefetchable) [size=64K]
    Capabilities: [48] 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=1 PME-
    Capabilities: [58] MSI: Enable- Count=1/1 Maskable- 64bit+
        Address: 0000000000000000  Data: 0000
    Capabilities: [ac] Express (v2) Endpoint, MSI 00
        DevCap:    MaxPayload 128 bytes, PhantFunc 0, Latency L0s <4us, L1 <64us
            ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
        DevCtl:    Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
            RlxdOrd+ ExtTag- PhantFunc- AuxPwr+ NoSnoop+
            MaxPayload 128 bytes, MaxReadReq 4096 bytes
        DevSta:    CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
        LnkCap:    Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1,
Latency L0 <1us, L1 <2us
            ClockPM+ Surprise- LLActRep- BwNot-
        LnkCtl:    ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
            ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
        LnkSta:    Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+
DLActive- BWMgmt- ABWMgmt-
        DevCap2: Completion Timeout: Range ABCD, 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,
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-
    Capabilities: [150 v1] Power Budgeting <?>
    Capabilities: [160 v1] Virtual Channel
        Caps:    LPEVC=0 RefClk=100ns PATEntryBits=1
        Arb:    Fixed- WRR32- WRR64- WRR128-
        Ctrl:    ArbSelect=Fixed
        Status:    InProgress-
        VC0:    Caps:    PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
            Arb:    Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
            Ctrl:    Enable+ ID=0 ArbSelect=Fixed TC/VC=ff
            Status:    NegoPending- InProgress-
    Kernel driver in use: sdhci-pci
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