Re: PCI-e rs232 card on linux

On Fri, 2006-04-07 at 11:12 +1000, Dan wrote:
> I have a PCI express rs232 card made by these people: www.softio.com. In
> particular I am using several ic0658kb in several machines. Dell
> Poweredge 850s to be precise, using the A02 bios firmware.
> 
> The softio people say their cards are supported in Linux, but I suspect
> the 2.6 kernel's serial driver does not know/recognize the device id of
> this card.
> 
> Here is what lspci says:
> 
> 02:00.0 Class 0700: 1415:950b (prog-if 06)
>         Subsystem: 1415:0001
>         Flags: medium devsel, IRQ 169
>         I/O ports at ecf8 [size=8]
>         Memory at fe9ff000 (32-bit, non-prefetchable) [size=4K]
>         I/O ports at ece0 [size=16]
>         Memory at fe9fe000 (32-bit, non-prefetchable) [size=4K]
>         Memory at fe9fd000 (32-bit, non-prefetchable) [size=4K]
>         Capabilities: [40] Power Management version 1
> 
> 02:01.0 Class 0700: 1415:950b (prog-if 06)
>         Subsystem: 1415:0001
>         Flags: medium devsel, IRQ 50
>         I/O ports at ecf0 [size=8]
>         Memory at fe9fc000 (32-bit, non-prefetchable) [size=4K]
>         I/O ports at ecd0 [size=16]
>         Memory at fe9fb000 (32-bit, non-prefetchable) [size=4K]
>         Memory at fe9fa000 (32-bit, non-prefetchable) [size=4K]
>         Capabilities: [40] Power Management version 1
> 
> 
> When inspecting dmesg I notice the following, which seems relevant at
> this point:
> 
> 00:07: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> ACPI: PCI Interrupt 0000:02:00.0[A] -> GSI 16 (level, low) -> IRQ 169
> ACPI: PCI interrupt for device 0000:02:00.0 disabled
> ACPI: PCI Interrupt 0000:02:01.0[A] -> GSI 17 (level, low) -> IRQ 50
> ACPI: PCI interrupt for device 0000:02:01.0 disabled
> 
> The softio people suggested i manually try configuring the devices with
> setserial but i did not think this would work:
> 
> setserial /dev/ttyS4 Port 0xecf8 IRQ 169 UART 16950 baud_base 115200
> setserial /dev/ttyS5 Port 0xecf0 IRQ 50 UART 16950 baud_base 115200
> 
> However the device nodes did not exist.
> 
> Bit of googling shows the chip used on this card has been used in pcmcia
> serial controllers, but thats of little help as this device is PCI
> express.
> 
> What do I need to do to get this card to work? Anyone know?
> 
> Cheers,
> 
> Dan
> 

Dan,

Try mknod /dev/ttyS4 c 4 67 to make the device node, then:

setserial /dev/ttyS4 Port 0xecf8 IRQ 169 UART 16950 baud_base 115200

This will not survive a reboot.  Your udev config will need mods to
automagically create the device node at boot time.

Bob...