Results 1 to 3 of 3

Thread: Only two ports on quad-port serial card (RS232) working

Hybrid View

  1. #1
    Join Date
    Mar 2008
    Beans
    9

    Only two ports on quad-port serial card (RS232) working

    I have several 4 port serial PCIe cards that I have to get working on Ubuntu 8.04 Server. After physically installing the cards, two of the ports work perfectly , but I can't see the other two at all.

    Here is my symptom:
    On boot, I always get the same 4 serial device entries, /dev/ttyS[0-3], where /dev/ttyS0 and /dev/ttyS1 are always used by the two system serial devices. When the PCIe card is installed, /dev/ttyS2 and /dev/ttyS3 are the first two ports on the PCIe card. Both ttyS2 and ttyS3 work perfectly, but /dev/ttyS4 and /dev/ttyS5 entries are created to access with the two additional ports.

    My first guess is that I just need to use something to force more device entries to be created at boot, but I'm not sure how to do that, or if that's even the right answer.


    Any help would be greatly appreciated!

    Thanks,
    Terence.

    Here is a link to an advertisement for the card I have...
    http://qualitycables.com/productdeta...232&cats=99172


    Here is the output from hwinfo

    15: PCI 900.0: 0700 Serial controller (16950)
    [Created at pci.296]
    Unique ID: x1VA.X6OsFKAdrtA
    Parent ID: GBI1.kPe8RsCV5kE
    SysFS ID: /devices/pci0000:00/0000:00:02.0/0000:04:00.0/0000:05:01.0/0000:08:00.0/0000:09:00.0
    SysFS BusID: 0000:09:00.0
    Hardware Class: unknown
    Model: "Oxford OX16PCI954 (Quad 16950 UART) function 0"
    Vendor: pci 0x1415 "Oxford Semiconductor Ltd"
    Device: pci 0x9501 "OX16PCI954 (Quad 16950 UART) function 0"
    SubVendor: pci 0x1415 "Oxford Semiconductor Ltd"
    SubDevice: pci 0x0000
    Driver: "serial"
    I/O Ports: 0xdce0-0xdcff (rw)
    Memory Range: 0xd5eff000-0xd5efffff (rw,non-prefetchable)
    I/O Ports: 0xdca0-0xdcbf (rw)
    Memory Range: 0xd5efe000-0xd5efefff (rw,non-prefetchable)
    IRQ: 17 (86 events)
    Module Alias: "pci:v00001415d00009501sv00001415sd00000000bc07sc0 0i06"
    Config Status: cfg=new, avail=yes, need=no, active=unknown
    Attached to: #16 (PCI bridge)

  2. #2
    Join Date
    Dec 2006
    Beans
    1,133
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Only two ports on quad-port serial card (RS232) working

    Install the setserial package, I think you'll need it. The man pages that come with it should help.

  3. #3
    Join Date
    Mar 2008
    Beans
    9

    Re: Only two ports on quad-port serial card (RS232) working

    I've installed the set serial package, whose manpage suggests that's the right path to follow...

    (from the manpage....)
    During the normal bootup process, only COM ports 1-4 are initialized,
    using the default I/O ports and IRQ values, as listed below. In order
    to initialize any additional serial ports, or to change the COM 1-4
    ports to a nonstandard configuration, the setserial program should be
    used.
    But I am at a loss on how to proceed. I read the setserial init script and was pointed to the configuration file /var/lib/setserial/autoserial.conf. This file contained the following entries:

    Code:
    /dev/ttyS0 uart 16550A port 0x03f8 irq 12 baud_base 115200 spd_normal skip_test
    /dev/ttyS1 uart 16550A port 0x02f8 irq 3 baud_base 115200 spd_normal skip_test
    /dev/ttyS2 uart 16950/954 port 0xdce0 irq 17 baud_base 115200 spd_normal skip_test
    /dev/ttyS3 uart 16950/954 port 0xdce8 irq 17 baud_base 115200 spd_normal skip_test
    and so I added the these lines in a blind attempt to get it working, with no luck. (Of course, I used mknod to create the device entries first...)
    Code:
    /dev/ttyS4 uart 16950/954 port 0xdcf0 irq 17 baud_base 115200 spd_normal skip_test
    /dev/ttyS5 uart 16950/954 port 0xdcf8 irq 17 baud_base 115200 spd_normal skip_test
    I'm finding this surprisingly complex, I hope somebody who has done this before can point me in the right direction!

    Thanks again,
    Terence.

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •