Serial Port Base I/O Address of A000 ?

[Patrick K. <pat...@ya...>]

Hello,

How can I use the base I/O addresses from a serial card that lists A000, A100, A200 and A300 as the base I/O addresses for the four  ports? 

I discovered the "share_irq=1" switch to resolve the other issue I was having, but I can't figure out how to use the base I/O address of A000.

I get errors when I try to load the module with "io=a000" and when I try to compile the module using a000 the compile fails.

The card is a SYBA PCI-Express 4 Port Serial Card Model SY-PEX-4S.
http://www.newegg.com/Product/Product.aspx?Item=N82E16815124058

The card seems to be well supported in Linux and dmesg shows it's recognized:
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
ACPI: PCI Interrupt 0000:04:00.0[A] -> GSI 18 (level, low) -> IRQ 18
ACPI: PCI interrupt for device 0000:04:00.0 disabled
ACPI: PCI Interrupt 0000:04:00.1[B] -> GSI 19 (level, low) -> IRQ 19
ACPI: PCI interrupt for device 0000:04:00.1 disabled
ACPI: PCI Interrupt 0000:04:00.2[C] -> GSI 16 (level, low) -> IRQ 16
ACPI: PCI interrupt for device 0000:04:00.2 disabled
ACPI: PCI Interrupt 0000:04:00.3[D] -> GSI 17 (level, low) -> IRQ 17
ACPI: PCI interrupt for device 0000:04:00.3 disabled

Here's what lspci shows:

04:00.0 Serial controller: NetMos Technology Unknown device 9901 (prog-if 02 [16550])
    Subsystem: Unknown device a000:1000
    Flags: fast devsel, IRQ 18
    I/O ports at a000 [size=8]
    Memory at ed000000 (32-bit, non-prefetchable) [size=4K]
    Memory at ed001000 (32-bit, non-prefetchable) [size=4K]
    Capabilities: [80] Power Management version 3
    Capabilities: [88] Message Signalled Interrupts: Mask- 64bit+ Queue=0/5 Enable-
    Capabilities: [c0] Express Legacy Endpoint IRQ 0
    Capabilities: [100] Power Budgeting

04:00.1 Serial controller: NetMos Technology Unknown device 9901 (prog-if 02 [16550])
    Subsystem: Unknown device a000:1000
    Flags: fast devsel, IRQ 19
    I/O ports at a100 [size=8]
    Memory at ed002000 (32-bit, non-prefetchable) [size=4K]
    Memory at ed003000 (32-bit, non-prefetchable) [size=4K]
    Capabilities: [80] Power Management version 3
    Capabilities: [88] Message Signalled Interrupts: Mask- 64bit+ Queue=0/5 Enable-
    Capabilities: [c0] Express Legacy Endpoint IRQ 0
    Capabilities: [100] Power Budgeting

04:00.2 Serial controller: NetMos Technology Unknown device 9901 (prog-if 02 [16550])
    Subsystem: Unknown device a000:1000
    Flags: fast devsel, IRQ 16
    I/O ports at a200 [size=8]
    Memory at ed004000 (32-bit, non-prefetchable) [size=4K]
    Memory at ed005000 (32-bit, non-prefetchable) [size=4K]
    Capabilities: [80] Power Management version 3
    Capabilities: [88] Message Signalled Interrupts: Mask- 64bit+ Queue=0/5 Enable-
    Capabilities: [c0] Express Legacy Endpoint IRQ 0
    Capabilities: [100] Power Budgeting

04:00.3 Serial controller: NetMos Technology Unknown device 9901 (prog-if 02 [16550])
    Subsystem: Unknown device a000:1000
    Flags: fast devsel, IRQ 17
    I/O ports at a300 [size=8]
    Memory at ed006000 (32-bit, non-prefetchable) [size=4K]
    Memory at ed007000 (32-bit, non-prefetchable) [size=4K]
    Capabilities: [80] Power Management version 3
    Capabilities: [88] Message Signalled Interrupts: Mask- 64bit+ Queue=0/5 Enable-
    Capabilities: [c0] Express Legacy Endpoint IRQ 0
    Capabilities: [100] Power Budgeting

Any advice would be greatly appreciated.

Thanks much,
Patrick.