thr3ads.net - Nouveau - [Nouveau] How to check for proper MSI support? [Jul 2014]

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Ilia Mirkin

2014-Jul-03 03:20 UTC

[Nouveau] How to check for proper MSI support?

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:

pmc->use_msi = pci_enable_msi(device->pdev) == 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?

Thanks,

  -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

Yijing Wang

2014-Jul-03 05:58 UTC

head link

[Nouveau] How to check for proper MSI support?

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
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
> 

-- 
Thanks!
Yijing

Brian Becker

2014-Jul-04 00:35 UTC

head link

[Nouveau] How to check for proper MSI support?

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>
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
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >
> >
>
>
> --
> Thanks!
> Yijing
>
>-------------- next part --------------
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Brian Becker

2014-Jul-04 00:40 UTC

head link

[Nouveau] How to check for proper MSI support?

My previous message was badly formatted, and didn't make it to
linux-pci at vger.kernel.org. Hopefully this information is of some use.

root at p5-133:~# uname -a
Linux p5-133 3.15.2-p5-133 #1 Thu Jun 26 22:56:27 EDT 2014 i586 GNU/Linux
root at p5-133:~# lspci -vvvxxx
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: 128
00: 86 80 2d 12 06 00 00 22 01 00 00 06 00 80 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: 128
        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 80 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: 128, 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 80 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: 128 (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 80 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: 128 (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 80 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: 128 (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 80 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: 128 (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 80 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: 128, 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 80 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 40 59 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 01 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

root at p5-133:~#

On Thu, Jul 3, 2014 at 1:58 AM, Yijing Wang <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
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>
>>
>
>
> --
> Thanks!
> Yijing
>

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