Re: SIIG DP CyberSerial 4S PCIe Support

[James Lamanna]

On Mon, Mar 8, 2010 at 11:07 AM, James Lamanna <jlamanna@xxxxxxxxx> wrote:
> Hi,
> I recently purchased a SIIG DP CyberSerial 4S PCIe card, however the
> kernel doesn't seem to recognize it.
> There are no messages in dmesg or anything about it.
> Currently I'm at 2.6.24, but looking at drivers/serial/8250_pci.c
> between 2.6.24 and 2.6.32 there doesn't
> seem to be real changes with SIIG cards.
> Seems like other SIIG cards are supported, so are we just missing the
> PCI IDs for this card?
>
> Here's the lspci -nnvvvvvv output:
>
> 01:00.0 Serial controller [0700]: Oxford Semiconductor Ltd Unknown
> device [1415:c208] (prog-if 06 [16950])
>        Subsystem: Siig Inc Unknown device [131f:2250]
>        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop-
> ParErr- Stepping- SERR- FastB2B-
>        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
>        Interrupt: pin A routed to IRQ 16
>        Region 0: Memory at fe8fc000 (32-bit, non-prefetchable) [size=16K]
>        Region 1: Memory at fe600000 (32-bit, non-prefetchable) [size=2M]
>        Region 2: Memory at fe400000 (32-bit, non-prefetchable) [size=2M]
>        Capabilities: [40] Power Management version 3
>                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=55mA
> PME(D0-,D1+,D2+,D3hot+,D3cold+)
>                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>        Capabilities: [70] Express Endpoint IRQ 0
>                Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag-
>                Device: Latency L0s <128ns, L1 <2us
>                Device: AtnBtn- AtnInd- PwrInd-
>                Device: Errors: Correctable- Non-Fatal+ Fatal+ Unsupported-
>                Device: RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
>                Device: MaxPayload 128 bytes, MaxReadReq 512 bytes
>                Link: Supported Speed 2.5Gb/s, Width x1, ASPM L0s L1, Port 0
>                Link: Latency L0s <512ns, L1 <64us
>                Link: ASPM Disabled RCB 64 bytes CommClk- ExtSynch-
>                Link: Speed 2.5Gb/s, Width x1
>        Capabilities: [b0] MSI-X: Enable- Mask- TabSize=16
>                Vector table: BAR=1 offset=001b3000
>                PBA: BAR=1 offset=001b2000

After some more digging I found these messages in dmesg which doesn't
exactly sound good:

[   52.104180] ACPI: PCI Interrupt 0000:01:00.0[A] -> GSI 16 (level,
low) -> IRQ 16
[   52.104189] ACPI: PCI interrupt for device 0000:01:00.0 disabled

01:00.0 is the device ID of the SIIG card.
Any reason ACPI would disable interrupts for this card?

Thanks.

-- James

>
> Please CC me for I am not subscribed.
>
> Thanks.
>
> -- James
>
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