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    SubjectRe: [PATCH] pci: don't enable too much HT MSI mapping -v5 -resend
    Date
    On Samstag 28 März 2009 21:52:45 Yinghai Lu wrote:
    > On Sat, Mar 28, 2009 at 6:31 AM, Prakash Punnoor <prakash@punnoor.de> wrote:
    > > On Samstag 28 März 2009 13:34:44 Prakash Punnoor wrote:
    > >> On Freitag 27 März 2009 00:10:01 Jesse Barnes wrote:
    > >> > On Fri, 20 Mar 2009 19:29:41 -0700
    > >> >
    > >> > Yinghai Lu <yinghai@kernel.org> wrote:
    > >> > > Impact: fix bug
    > >> > >
    > >> > > Prakash reported that his c51-mcp51 system ondie sound card doesn't
    > >> > > work MSI but if he hack out the HT-MSI on mcp51, the MSI will work
    > >> > > well with sound card.
    > >> > >
    > >> > > this patch rework the nv_msi_ht_cap_quirk()
    > >> > > and will only try to avoid to enable ht_msi on device following that
    > >> > > root dev, and don't touch that root dev
    > >> > >
    > >> > > v3: will enable c51...
    > >> > > v4: will enable c51 kind of without leaf too.
    > >> > > v5: update to mainline
    > >> > >
    > >> > > Reported-by: Prakash Punnoor <prakash@punnoor.de>
    > >> > > Signed-off-by: Yinghai Lu <yinghai@kernel.org>
    > >> >
    > >> > Applied, thanks. Prakash if you get a chance can you try testing my
    > >> > linux-next branch (or just linux-next in general tomorrow) to make
    > >> > sure this is still ok for you?
    > >> >
    > >> > Thanks,
    > >>
    > >> Finally I am able to test the linux-next branch of pci tree after Jesse
    > >> gave some help with git.(Is it correct that the kernel calls itself
    > >> 2.6.28-rc8? I looked into quirks.c and it seems to be correctly
    > >> patched.) Unfortunately it doesn't seem to work for me (and I am
    > >> wondering why as the old v4 version seemed to work ontop of one of the
    > >> 2.6.29-rc versions):
    > >>
    > >> dmesg|grep HT
    > >> pci 0000:00:00.0: Found disabled HT MSI Mapping
    > >> pci 0000:00:03.0: Enabling HT MSI Mapping
    > >> pci 0000:00:09.0: Found disabled HT MSI Mapping
    > >> pci 0000:00:0e.0: Enabling HT MSI Mapping
    > >> pci 0000:00:09.0: Found disabled HT MSI Mapping
    > >> pci 0000:00:0f.0: Enabling HT MSI Mapping
    > >> pci 0000:00:09.0: Found disabled HT MSI Mapping
    > >> pci 0000:00:10.0: Enabling HT MSI Mapping
    > >> pci 0000:00:09.0: Found disabled HT MSI Mapping
    > >> pci 0000:00:10.1: Enabling HT MSI Mapping
    > >>
    > >> Device 09.0 doesn't get enabled (good) but 00.0 also not (bad). Then my
    > >> Intel HDA cannot use MSI.
    > >
    > > I sprinkeld a few debugging messages around in the code and looking at
    > > that I don't see how the code can enable NMSI for device 00.0, but not
    > > for 09.0:
    > >
    > > Both will exit here:
    > >
    > > if (host_bridge == dev && host_bridge_with_leaf(host_bridge))
    >
    > where is
    > 0000:00:03.0: Enabling HT MSI Mapping
    > from?

    As I said this time there is a PCIe device more in my system (a realtek NIC):
    I guess because of that this one appeared - or I have some different drivers
    loaded?

    00:03.0 PCI bridge: nVidia Corporation C51 PCI Express Bridge (rev a1) (prog-if 00 [Normal decode])
    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: 32 bytes
    Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
    I/O behind bridge: 0000a000-0000afff
    Memory behind bridge: fdc00000-fdcfffff
    Prefetchable memory behind bridge: 00000000fdd00000-00000000fddfffff
    Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
    BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
    PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
    Capabilities: [40] Subsystem: nVidia Corporation Device 0000
    Capabilities: [48] Power Management version 2
    Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
    Status: D0 PME-Enable- DSel=0 DScale=0 PME-
    Capabilities: [50] MSI: Mask- 64bit+ Count=1/2 Enable+
    Address: 00000000fee0300c Data: 4149
    Capabilities: [60] HyperTransport: MSI Mapping Enable- Fixed-
    Mapping Address Base: 00000000fee00000
    Capabilities: [80] Express (v1) Root Port (Slot+), MSI 00
    DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <4us
    ExtTag- 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 #1, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <4us
    ClockPM- Surprise- LLActRep+ BwNot-
    LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
    ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
    LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt- ABWMgmt-
    SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surpise-
    Slot # 0, PowerLimit 0.000000; Interlock- NoCompl-
    SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg-
    Control: AttnInd Off, PwrInd On, Power- Interlock-
    SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock-
    Changed: MRL- PresDet+ LinkState+
    RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-
    RootCap: CRSVisible-
    RootSta: PME ReqID 0000, PMEStatus- PMEPending-
    Capabilities: [100] Virtual Channel <?>
    Kernel driver in use: pcieport-driver
    00: de 10 fd 02 07 04 10 00 a1 00 04 06 08 00 01 00
    10: 00 00 00 00 00 00 00 00 00 01 01 00 a1 a1 00 20
    20: c0 fd c0 fd d1 fd d1 fd 00 00 00 00 00 00 00 00
    30: 00 00 00 00 40 00 00 00 00 00 00 00 ff 00 04 00
    40: 0d 48 00 00 de 10 00 00 01 50 02 f8 00 00 00 00
    50: 05 60 83 00 0c 30 e0 fe 00 00 00 00 49 41 00 00
    60: 08 80 00 a8 00 00 e0 fe 00 00 00 00 00 00 00 00
    70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    80: 10 00 41 01 c0 04 00 00 10 28 00 00 11 3c 11 01
    90: 40 00 11 30 00 00 00 00 c0 01 48 01 00 00 00 00
    a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

    The realtek nic:
    01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01)
    Subsystem: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet 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: 64 bytes
    Interrupt: pin A routed to IRQ 25
    Region 0: I/O ports at ac00 [size=256]
    Region 2: Memory at fdcff000 (64-bit, non-prefetchable) [size=4K]
    Expansion ROM at fdcc0000 [disabled] [size=128K]
    Capabilities: [40] Power Management version 2
    Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0-,D1+,D2+,D3hot+,D3cold+)
    Status: D0 PME-Enable- DSel=0 DScale=0 PME-
    Capabilities: [48] Vital Product Data
    Unknown small resource type 05
    Unknown large resource type 6c
    No end tag found
    Capabilities: [50] MSI: Mask- 64bit+ Count=1/2 Enable+
    Address: 00000000fee0300c Data: 4161
    Capabilities: [60] Express (v1) Endpoint, MSI 00
    DevCap: MaxPayload 1024 bytes, PhantFunc 0, Latency L0s <1us, L1 unlimited
    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 x4, ASPM L0s, Latency L0 unlimited, L1 unlimited
    ClockPM- Surprise- LLActRep- BwNot-
    LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
    ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
    LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
    Capabilities: [84] Vendor Specific Information <?>
    Capabilities: [100] 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: 14, GenCap- CGenEn- ChkCap- ChkEn-
    Capabilities: [12c] Virtual Channel <?>
    Capabilities: [148] Device Serial Number 68-81-ec-10-00-00-12-45
    Capabilities: [154] Power Budgeting <?>
    Kernel driver in use: r8169
    00: ec 10 68 81 07 04 10 00 01 00 00 02 10 00 00 00
    10: 01 ac 00 00 00 00 00 00 04 f0 cf fd 00 00 00 00
    20: 00 00 00 00 00 00 00 00 02 01 00 00 ec 10 68 81
    30: 00 00 cc fd 40 00 00 00 00 00 00 00 05 01 00 00
    40: 01 48 c2 f7 00 00 00 00 03 50 00 00 05 df c2 f7
    50: 05 60 83 00 0c 30 e0 fe 00 00 00 00 61 41 00 00
    60: 10 84 01 00 23 7f 00 00 10 58 1a 00 41 f4 03 00
    70: 40 00 11 10 00 00 00 00 00 00 00 00 00 00 00 00
    80: 00 00 00 00 09 00 4c 01 01 1c 02 00 fb ff ff 11
    90: 08 30 00 00 a2 10 0a 00 67 50 08 00 c3 01 00 00
    a0: 02 28 ff 01 00 00 00 00 00 08 00 00 03 00 03 00
    b0: 00 00 00 00 ff 3f ff 3f ff ff 00 00 00 00 00 00
    c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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