linux-kernel - Re: irq 16: nobody cared

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Date:	Mon, 22 Apr 2013 13:33:12 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Borislav Petkov <bp@...en8.de>
Cc:	paulmck@...ux.vnet.ibm.com, x86-ml <x86@...nel.org>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: irq 16: nobody cared

At Mon, 22 Apr 2013 12:06:57 +0200,
Borislav Petkov wrote:
> 
> On Mon, Apr 22, 2013 at 11:19:07AM +0200, Takashi Iwai wrote:
> > Is the PCI device a HD-audio controller for the built-in analog or
> > a HDMI audio controller coupled with a graphics chip?
> 
> Hmm:
> 
> [    7.204020] snd_hda_intel 0000:01:00.1: irq 90 for MSI/MSI-X
> [    7.551912]   #0: HDA ATI SB at 0xfeb00000 irq 16

So, you have two PCI HD-audio controllers, and 0000:01:00.1 is for
HDMI while irq 16 is from another onboard audio.  Does the onboard
audio PCI entry have no MSI support, right?

(This might be off-topic, but I just wonder...)


thanks,

Takashi

> [    7.551965]   #1: HDA ATI HDMI at 0xfea30000 irq 90
> [   70.870377] snd_hda_intel 0000:01:00.1: irq 90 for MSI/MSI-X
> 
> # lspci -s 01:00.1 -vvv
> 01:00.1 Audio device: Advanced Micro Devices [AMD] nee ATI RV635 HDMI Audio [Radeon HD 3600 Series]
>         Subsystem: ASUSTeK Computer Inc. Device aa20
>         Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
>         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>         Latency: 0, Cache Line Size: 64 bytes
>         Interrupt: pin B routed to IRQ 90
>         Region 0: Memory at fea30000 (64-bit, non-prefetchable) [size=16K]
>         Capabilities: [50] 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: [58] Express (v2) Legacy Endpoint, MSI 00
>                 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <4us, L1 unlimited
>                         ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
>                 DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
>                         RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
>                         MaxPayload 128 bytes, MaxReadReq 128 bytes
>                 DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
>                 LnkCap: Port #0, Speed 5GT/s, Width x16, ASPM L0s L1, Latency L0 <64ns, L1 <1us
>                         ClockPM- Surprise- LLActRep- BwNot-
>                 LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
>                         ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
>                 LnkSta: Speed 5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
>                 DevCap2: Completion Timeout: Not Supported, TimeoutDis-
>                 DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
>                 LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
>                          Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
>                          Compliance De-emphasis: -6dB
>                 LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
>                          EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
>         Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
>                 Address: 00000000feeff00c  Data: 4164
>         Capabilities: [100 v1] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
>         Kernel driver in use: snd_hda_intel
> 
> -- 
> Regards/Gruss,
>     Boris.
> 
> Sent from a fat crate under my desk. Formatting is fine.
> --
> 
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