[Nouveau] How to check for proper MSI support?
Brian Becker
brian.johnathan.b at gmail.com
Thu Jul 3 19:45:27 PDT 2014
Yijing,
cat /sys/bus/pci/devices/0000\:00\:0e.0/msi_bus returns 1, suggesting
that it supports MSI. However, this "00:0e.0 PCI bridge: PLX
Technology, Inc. PEX8112 x1 Lane PCI Express-to-PCI Bridge (rev aa)"
is a component of the addin card. Wouldn't the lack of support for MSI
by the chipset "00:00.0 Host bridge: Intel Corporation 430FX - 82437FX
TSC [Triton I] (rev 01)" preclude the use of MSI with buses attached
via a bridge?
Thanks,
Brian
On Thu, Jul 3, 2014 at 10:35 PM, Yijing Wang <wangyijing at huawei.com> wrote:
> Hi Brian,
> From your 01:00.0 VGA compatible controller PCI config register, it supports 1 MSI vector, so I think this
> card has no problem. But you didn't answer what's the pci_enable_msi() return during it enable MSI fail.
>
> You can check PCI bus whether support MSI like:
>
> cat /sys/bus/pci/devices/00:0e.0/msi_bus
>
> Other, do you call pci_enable_device() before pci_enable_msi() ?
>
> On 2014/7/4 8:35, Brian Becker wrote:
>> I mistakenly only replied to Yijing Wang the first time. Here are the further details.
>>
>> uname -a: Linux p5-133 3.15.2-p5-133 #1 Thu Jun 26 22:56:27 EDT 2014 i586 GNU/Linux
>>
>> Here is the output from lspci -vvvxxx:
>>
>> root at p5-133:~# cat lspci.txt
>> 00:00.0 Host bridge: Intel Corporation 430FX - 82437FX TSC [Triton I] (rev 01)
>> 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
>> 00: 86 80 2d 12 06 00 00 22 01 00 00 06 00 40 00 00
>> 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 50: 88 00 41 00 00 00 00 03 49 10 55 55 55 05 55 05
>> 60: 08 10 18 20 20 00 00 00 0f 00 00 00 00 00 00 00
>> 70: 00 00 0a 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 90: 00 00 00 00 00 00 00 00 00 00 00 00 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 20 00 00
>>
>> 00:07.0 ISA bridge: Intel Corporation 82371FB PIIX ISA [Triton I] (rev 02)
>> 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: 0
>> 00: 86 80 2e 12 0f 00 80 02 02 00 01 06 00 00 80 00
>> 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 40: 00 00 00 00 00 00 00 00 00 00 00 00 4d 00 60 00
>> 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 60: 0b 0b 0b 09 00 00 00 00 00 f2 05 00 00 00 00 00
>> 70: 0f 80 00 00 00 00 04 04 02 00 00 00 00 00 00 00
>> 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> a0: 03 00 e0 00 02 d0 00 a0 13 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 08 02 00 00 00 00 00 00
>>
>> 00:07.1 IDE interface: Intel Corporation 82371FB PIIX IDE [Triton I] (rev 02) (prog-if 80 [Master])
>> 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
>> Region 0: [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [size=8]
>> Region 1: [virtual] Memory at 000003f0 (type 3, non-prefetchable) [size=1]
>> Region 2: [virtual] Memory at 00000170 (32-bit, non-prefetchable) [size=8]
>> Region 3: [virtual] Memory at 00000370 (type 3, non-prefetchable) [size=1]
>> Region 4: I/O ports at ef80 [size=16]
>> Kernel driver in use: pata_oldpiix
>> 00: 86 80 30 12 05 00 80 02 02 80 01 01 00 40 00 00
>> 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 20: 81 ef 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 40: 36 a3 07 a3 00 00 00 00 00 00 00 00 00 00 00 00
>> 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 60: 00 00 00 00 00 00 00 00 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: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 90: 00 00 00 00 00 00 00 00 00 00 00 00 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 08 02 00 00 00 00 00 00
>>
>> 00:0e.0 PCI bridge: PLX Technology, Inc. PEX8112 x1 Lane PCI Express-to-PCI Bridge (rev aa) (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=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>> Latency: 66, Cache Line Size: 32 bytes
>>
>> Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
>> I/O behind bridge: 0000f000-0000ffff
>> Memory behind bridge: f5e00000-fbffffff
>> Prefetchable memory behind bridge: d5d00000-f5dfffff
>> 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] Power Management version 2
>> 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: 0000000000000000 Data: 0000
>> Capabilities: [60] Express (v1) PCI/PCI-X to PCI-Express Bridge, MSI 00
>> DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
>> ExtTag- RBE- FLReset-
>> DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
>> RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop- BrConfRtry-
>> 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 <1us, L1 <16us
>> ClockPM- Surprise- LLActRep- BwNot-
>> LnkCtl: ASPM Disabled; Disabled- Retrain- CommClk-
>> ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
>> LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
>> 00: b5 10 12 81 17 01 30 02 aa 00 04 06 08 42 01 00
>> 10: 00 00 00 00 00 00 00 00 00 01 01 00 f0 f0 00 00
>> 20: e0 f5 f0 fb d0 d5 d0 f5 00 00 00 00 00 00 00 00
>> 30: 00 00 00 00 40 00 00 00 00 00 00 00 00 01 0b 00
>> 40: 01 50 02 5a 00 00 00 00 10 28 0e 00 00 00 00 00
>> 50: 05 60 80 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 60: 10 00 81 00 00 00 00 00 00 20 00 00 11 4c 02 00
>> 70: 00 00 11 00 80 0c 00 00 00 00 40 00 00 00 00 00
>> 80: 00 00 00 00 00 00 00 00 33 00 00 00 00 00 00 00
>> 90: 00 00 00 00 00 00 00 00 00 00 00 00 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
>>
>> 00:0f.0 USB controller: ULi Electronics Inc. USB 1.1 Controller (rev 03) (prog-if 10 [OHCI])
>> Subsystem: ULi Electronics Inc. ASRock 939Dual-SATA2 Motherboard
>> 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 (20000ns max), Cache Line Size: 32 bytes
>> Interrupt: pin B routed to IRQ 9
>> Region 0: Memory at ffbeb000 (32-bit, non-prefetchable) [size=4K]
>> Capabilities: [60] Power Management version 2
>> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1+,D2-,D3hot+,D3cold+)
>> Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>> Kernel driver in use: ohci-pci
>> 00: b9 10 37 52 17 01 b0 02 03 10 03 0c 08 40 80 00
>> 10: 00 b0 be ff 00 00 00 00 00 00 00 00 00 00 00 00
>> 20: 00 00 00 00 00 00 00 00 00 00 00 00 b9 10 37 52
>> 30: 00 00 00 00 60 00 00 00 00 00 00 00 09 02 00 50
>> 40: 00 00 1f 00 e0 02 00 00 00 00 00 00 00 00 00 00
>> 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 60: 01 00 02 d8 00 00 00 00 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: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 90: 00 00 00 00 00 00 00 00 00 00 00 00 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
>>
>> 00:0f.1 USB controller: ULi Electronics Inc. USB 1.1 Controller (rev 03) (prog-if 10 [OHCI])
>> Subsystem: ULi Electronics Inc. ASRock 939Dual-SATA2 Motherboard
>> 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 (20000ns max), Cache Line Size: 32 bytes
>> Interrupt: pin C routed to IRQ 11
>> Region 0: Memory at ffbec000 (32-bit, non-prefetchable) [size=4K]
>> Capabilities: [60] Power Management version 2
>> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1+,D2-,D3hot+,D3cold+)
>> Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>> Kernel driver in use: ohci-pci
>> 00: b9 10 37 52 17 01 b0 02 03 10 03 0c 08 40 80 00
>> 10: 00 c0 be ff 00 00 00 00 00 00 00 00 00 00 00 00
>> 20: 00 00 00 00 00 00 00 00 00 00 00 00 b9 10 37 52
>> 30: 00 00 00 00 60 00 00 00 00 00 00 00 0b 03 00 50
>> 40: 00 00 1f 00 e0 02 00 00 00 00 00 00 00 00 00 00
>> 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 60: 01 00 02 d8 00 00 00 00 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: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 90: 00 00 00 00 00 00 00 00 00 00 00 00 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
>>
>> 00:0f.2 USB controller: ULi Electronics Inc. USB 1.1 Controller (rev 03) (prog-if 10 [OHCI])
>> Subsystem: ULi Electronics Inc. ASRock 939Dual-SATA2 Motherboard
>> 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 (20000ns max), Cache Line Size: 32 bytes
>> Interrupt: pin D routed to IRQ 11
>> Region 0: Memory at ffbed000 (32-bit, non-prefetchable) [size=4K]
>> Capabilities: [60] Power Management version 2
>> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1+,D2-,D3hot+,D3cold+)
>> Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>> Kernel driver in use: ohci-pci
>> 00: b9 10 37 52 17 01 b0 02 03 10 03 0c 08 40 80 00
>> 10: 00 d0 be ff 00 00 00 00 00 00 00 00 00 00 00 00
>> 20: 00 00 00 00 00 00 00 00 00 00 00 00 b9 10 37 52
>> 30: 00 00 00 00 60 00 00 00 00 00 00 00 0b 04 00 50
>> 40: 00 00 1f 00 e0 02 00 00 00 00 00 00 00 00 00 00
>> 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 60: 01 00 02 d8 00 00 00 00 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: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 90: 00 00 00 00 00 00 00 00 00 00 00 00 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
>>
>> 00:0f.3 USB controller: ULi Electronics Inc. USB 2.0 Controller (rev 01) (prog-if 20 [EHCI])
>> Subsystem: ULi Electronics Inc. Device 5272
>> 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 (20000ns max), Cache Line Size: 32 bytes
>> Interrupt: pin A routed to IRQ 11
>> Region 0: Memory at ffbefc00 (32-bit, non-prefetchable) [size=256]
>> Capabilities: [50] Power Management version 2
>> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
>> Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>> Capabilities: [58] Debug port: BAR=1 offset=0090
>> Kernel driver in use: ehci-pci
>> 00: b9 10 39 52 16 01 b0 02 01 20 03 0c 08 40 80 00
>> 10: 00 fc be ff 00 00 00 00 00 00 00 00 00 00 00 00
>> 20: 00 00 00 00 00 00 00 00 00 00 00 00 b9 10 72 52
>> 30: 00 00 00 00 50 00 00 00 00 00 00 00 0b 01 00 50
>> 40: 01 02 00 ee 00 00 10 c4 00 00 00 00 00 00 00 00
>> 50: 01 58 02 c8 00 00 00 00 0a 00 90 20 00 00 00 00
>> 60: 20 20 7f 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 70: 01 00 00 00 00 00 00 c0 00 00 00 00 00 00 00 00
>> 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 90: 00 00 00 00 00 00 00 00 00 00 00 00 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
>>
>> 00:10.0 RAID bus controller: Silicon Image, Inc. PCI0680 Ultra ATA-133 Host Controller (rev 02)
>> Subsystem: Silicon Image, Inc. Winic W-680 (Silicon Image 680 based)
>> 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, Cache Line Size: 4 bytes
>> Interrupt: pin A routed to IRQ 9
>> Region 0: I/O ports at eff0 [size=8]
>> Region 1: I/O ports at efe4 [size=4]
>> Region 2: I/O ports at efa8 [size=8]
>> Region 3: I/O ports at efe0 [size=4]
>> Region 4: I/O ports at ef90 [size=16]
>> Region 5: Memory at ffbeec00 (32-bit, non-prefetchable) [size=256]
>> [virtual] Expansion ROM at 08000000 [disabled] [size=512K]
>> Capabilities: [60] Power Management version 2
>> Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
>> Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=2 PME-
>> Kernel driver in use: pata_sil680
>> 00: 95 10 80 06 07 01 90 02 02 00 04 01 01 40 00 00
>> 10: f1 ef 00 00 e5 ef 00 00 a9 ef 00 00 e1 ef 00 00
>> 20: 91 ef 00 00 00 ec be ff 00 00 00 00 95 10 80 36
>> 30: 00 00 00 00 60 00 00 00 00 00 00 00 09 01 00 00
>> 40: 00 00 00 00 90 14 19 08 00 00 00 00 00 00 00 00
>> 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 60: 01 00 22 06 00 40 00 64 00 00 00 00 00 00 00 00
>> 70: 08 00 00 00 00 70 57 07 00 00 00 00 00 00 00 00
>> 80: 03 00 00 00 00 00 00 00 00 00 11 00 d9 7d ff 7b
>> 90: 00 fe 00 0d ff ff ff 3b 33 00 00 19 ff 00 00 00
>> a0: 00 62 c1 10 c1 10 8a 32 c1 10 92 43 07 40 09 40
>> b0: 01 60 8a 32 8a 32 8a 32 92 43 92 43 09 40 09 40
>> 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
>>
>> 01:00.0 VGA compatible controller: NVIDIA Corporation G96 [GeForce 9400 GT] (rev a1) (prog-if 00 [VGA controller])
>> Subsystem: Jaton Corp Device 0641
>> 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
>> Interrupt: pin A routed to IRQ 11
>> Region 0: Memory at fb000000 (32-bit, non-prefetchable) [size=16M]
>> Region 1: Memory at e0000000 (64-bit, prefetchable) [size=256M]
>> Region 3: Memory at f8000000 (64-bit, non-prefetchable) [size=32M]
>> Region 5: I/O ports at fc80 [size=128]
>>
>> [virtual] Expansion ROM at d5d00000 [disabled] [size=512K]
>> Capabilities: [60] 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: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
>> Address: 0000000000000000 Data: 0000
>> Capabilities: [78] Express (v1) Endpoint, MSI 00
>> DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <4us
>> 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 x16, ASPM L0s L1, Latency L0 <512ns, L1 <1us
>> ClockPM- Surprise- LLActRep- BwNot-
>> LnkCtl: ASPM Disabled; RCB 128 bytes Disabled- Retrain- CommClk-
>> ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
>> LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
>>
>> Capabilities: [b4] Vendor Specific Information: Len=14 <?>
>> Kernel driver in use: nouveau
>> 00: de 10 41 06 07 01 10 00 a1 00 00 03 08 00 00 00
>> 10: 00 00 00 fb 0c 00 00 e0 00 00 00 00 04 00 00 f8
>> 20: 00 00 00 00 81 fc 00 00 00 00 00 00 13 1b 41 06
>> 30: 00 00 00 00 60 00 00 00 00 00 00 00 0b 01 00 00
>> 40: 13 1b 41 06 00 00 00 00 00 00 00 00 00 00 00 00
>> 50: 01 00 00 00 01 00 00 00 ce d6 23 00 00 00 00 00
>> 60: 01 68 03 00 00 00 00 00 05 78 80 00 00 00 00 00
>> 70: 00 00 00 00 00 00 00 00 10 b4 01 00 e0 84 64 00
>> 80: 10 28 00 00 01 3d 00 00 08 00 11 10 00 00 00 00
>> 90: 00 00 00 00 00 00 00 00 00 00 00 00 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 09 00 14 01 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
>>
>>
>>
>> On Thu, Jul 3, 2014 at 1:58 AM, Yijing Wang <wangyijing at huawei.com <mailto:wangyijing at huawei.com>> wrote:
>>
>> On 2014/7/3 11:20, Ilia Mirkin wrote:
>> > Hello,
>> >
>> > A user (cc'd) reported that nouveau's enabling of MSI causes the card
>> > to not work on his setup [1]. I think the situation is that MSI is
>> > just not supported by the underlying motherboard, even though the
>> > card, and probably bridge, support it just fine. It's a very old
>> > board. The nouveau code does:
>>
>>
>> What is the kernel version running in your board ?
>>
>> >
>> > pmc->use_msi = pci_enable_msi(device->pdev) == 0;
>>
>> Driver call pci_enable_msi() and always return 0 ?
>>
>> >
>> > Does it need to do more checking than that before trying to enable MSI
>> > on the device? Could it be that the linux pci subsystem is missing on
>> > inheriting MSI capabilities somewhere?
>>
>> pci_enable_msi() will checking your device whether it supports MSI.
>> Can you provide the detailed lspci information ? eg. lspci -vvvxxx ?
>>
>>
>> >
>> > -ilia
>> >
>> > [1]
>> >
>> > 00:00.0 Host bridge [0600]: Intel Corporation 430FX - 82437FX TSC
>> > [Triton I] [8086:122d] (rev 01)
>> > Flags: bus master, medium devsel, latency 64
>> >
>> > 00:0e.0 PCI bridge [0604]: PLX Technology, Inc. PEX8112 x1 Lane PCI
>> > Express-to-PCI Bridge [10b5:8112] (rev aa) (prog-if 00 [Normal
>> > decode])
>> > Flags: bus master, 66MHz, medium devsel, latency 66
>> > Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
>> > I/O behind bridge: 0000f000-0000ffff
>> > Memory behind bridge: f5e00000-fbffffff
>> > Prefetchable memory behind bridge: d5d00000-f5dfffff
>> > Capabilities: [40] Power Management version 2
>> > Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
>> > Capabilities: [60] Express PCI/PCI-X to PCI-Express Bridge, MSI 00
>> >
>> > 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation G96
>> > [GeForce 9400 GT] [10de:0641] (rev a1) (prog-if 00 [VGA controller])
>> > Subsystem: Jaton Corp Device [1b13:0641]
>> > Flags: bus master, fast devsel, latency 0, IRQ 11
>> > Memory at fb000000 (32-bit, non-prefetchable) [size=16M]
>> > Memory at e0000000 (64-bit, prefetchable) [size=256M]
>> > Memory at f8000000 (64-bit, non-prefetchable) [size=32M]
>> > I/O ports at fc80 [size=128]
>> > [virtual] Expansion ROM at d5d00000 [disabled] [size=512K]
>> > Capabilities: [60] Power Management version 3
>> > Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
>> > Capabilities: [78] Express Endpoint, MSI 00
>> > Capabilities: [b4] Vendor Specific Information: Len=14 <?>
>> > Kernel driver in use: nouveau
>> > --
>> > To unsubscribe from this list: send the line "unsubscribe linux-pci" in
>> > the body of a message to majordomo at vger.kernel.org <mailto:majordomo at vger.kernel.org>
>> > More majordomo info at http://vger.kernel.org/majordomo-info.html
>> >
>> >
>>
>>
>> --
>> Thanks!
>> Yijing
>>
>>
>
>
> --
> Thanks!
> Yijing
>
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