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8 port serial PCI card on squeeze


I am trying to configure an 8 port serial PCI card and managed to get the 3 first ports working but the 5 others do not work. The ouput of /proc/tty/drivers/serial is the following:

0: uart:TI16750 port:000003F8 irq:4 tx:2608 rx:0 RTS|CTS|DTR|DSR
1: uart:16C950/954 mmio:0xA5001000 irq:19 tx:0 rx:0
2: uart:16C950/954 mmio:0xA5001200 irq:19 tx:0 rx:0
3: uart:16C950/954 mmio:0xA5001400 irq:19 tx:0 rx:0
4: uart:16550A port:00001040 irq:19 tx:11 rx:0 RTS|DTR
5: uart:16550A port:00001048 irq:19 tx:0 rx:0
6: uart:16550A port:00001050 irq:19 tx:0 rx:0
7: uart:16550A port:00001058 irq:19 tx:0 rx:0

serial port 0 is the serial port of the main board then the serial port card starts at position 1. So you see here that the port 1, 2 and 3 are configured correctly but the rest  are not. I already added the two kernel parameters "8250.runtime_uarts=8 8250.nr_uarts=8" but that didn't help. Does anyone know what could be wrong here?

I am using Debian 6.0 and the 8 port serial PCI card is the following: http://www.exsys.ch/index.php?main_page=product_info&products_id=626&language=en

Last, here is the ouput of "lspci -v" on that card:

0d:00.0 Serial controller: Oxford Semiconductor Ltd Device c308 (prog-if 02 [16550])
    Subsystem: Oxford Semiconductor Ltd Device c308
    Flags: bus master, fast devsel, latency 0, IRQ 19
    Memory at a5000000 (32-bit, non-prefetchable) [size=16K]
    Memory at a5200000 (32-bit, non-prefetchable) [size=2M]
    Memory at a5400000 (32-bit, non-prefetchable) [size=2M]
    Capabilities: [40] Power Management version 3
    Capabilities: [70] Express Endpoint, MSI 00
    Capabilities: [b0] MSI-X: Enable- Count=16 Masked-
    Kernel driver in use: serial

Thanks for your help.


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