From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-pci-owner@vger.kernel.org>
Received: from mail-qc0-f181.google.com ([209.85.216.181]:47799 "EHLO
	mail-qc0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1755652AbaGDAkM (ORCPT
	<rfc822;linux-pci@vger.kernel.org>); Thu, 3 Jul 2014 20:40:12 -0400
Received: by mail-qc0-f181.google.com with SMTP id x13so931076qcv.40
        for <linux-pci@vger.kernel.org>; Thu, 03 Jul 2014 17:40:11 -0700 (PDT)
MIME-Version: 1.0
In-Reply-To: <53B4F0F7.9020403@huawei.com>
References: <CAKb7UviGCtebGwyHbXRLZhDOiDAez+eKkxPe9jz5kc-3R1kUvQ@mail.gmail.com>
	<53B4F0F7.9020403@huawei.com>
Date: Thu, 3 Jul 2014 20:40:11 -0400
Message-ID: <CALhae2jSNkAn-kqv44bCte=BGJY0dd9afUwoUF2gP_TX_-LnJw@mail.gmail.com>
Subject: Re: How to check for proper MSI support?
From: Brian Becker <brian.johnathan.b@gmail.com>
To: Yijing Wang <wangyijing@huawei.com>
Cc: Ilia Mirkin <imirkin@alum.mit.edu>, linux-pci@vger.kernel.org,
	"nouveau@lists.freedesktop.org" <nouveau@lists.freedesktop.org>
Content-Type: text/plain; charset=UTF-8
Sender: linux-pci-owner@vger.kernel.org
List-ID: <linux-pci.vger.kernel.org>

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

root@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@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@p5-133:~#

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