[Nouveau] How to check for proper MSI support?
Yijing Wang
wangyijing at huawei.com
Thu Jul 3 20:13:47 PDT 2014
On 2014/7/4 10:45, Brian Becker wrote:
> 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?
We have no ways to check host bridge whether support MSI routing to CPU, BIOS
is responsible for setting and config this in their private registers located in IOH.
This is transparent to OS I think.
>
> 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
>>
>
> .
>
--
Thanks!
Yijing
More information about the Nouveau
mailing list