[cobalt-developers] setserial on Qube2

["Doug Forman" <doug@xxxxxxxxxxx>]

Greetings,

I'm experimenting with different PCI serial cards and modems in my Qube2.  I
currently have an ActionTec 56k PCI Modem installed, which works properly as
ttyS4, but has a low connect speed despite different modem AT and S-register
configurations.

(An external USR Sportster 56k on ttyS0 works great!)

When trying to configure ANY of the ttySx devices using setserial 2.12-4, I
get an error as in the example below.  setserial *seems* to be choking on
the I/O port address length; when I substitute a shorter address, (i.e. port
0x6400 [rather than port 0x10108000]), setserial accepts the setting, but of
course the device does not work because the port address is not correct.

I have been trying to get the *only* 3Com/USR 56k PCI FaxModem (5610) to
work with the Qube2, but have been unsuccessful since I cannot get setserial
to accept a command that includes the longer [correct] I/O port. (the 5610
is not a WinModem, but a "real" modem which others are successfully using
with Linux).

Also, when trying to use setserial to configure settings OTHER than the I/O
port (in other words, to accept whatever the current I/O port address is,
but change another setting), setserial still chokes.

Any wisdom from the list on this?  I am suspecting an I/O port address
length limitation in setserial.  Does this make sense?  Is a possible
solution to correct and recompile the setserial code?  (I'm not a c
programmer...)

Regards,

Doug

-----
Doug Forman, MCSE, MCSD (doug@xxxxxxxxxxx)
Incline Systems, Inc. - Vancouver, WA

---------------------------------------------

[root@seaview /dev]# cat /proc/pci
PCI devices found:
  Bus  0, device  12, function  0:
    Ethernet controller: DEC DC21142 (rev 65).
      Medium devsel.  Fast back-to-back capable.  IRQ 13.  Master Capable.
Late
ncy=64.  Min Gnt=20.Max Lat=40.
      I/O at 0x10101000.
      Non-prefetchable 32 bit memory at 0x60bcfc00.
********* MY COMMENT LINE - MODEM STARTS NEXT
***********************************
  Bus  0, device  10, function  0:
    Communication controller: Lucent (ex-AT&T) Microelectronics L56DV+P (rev
0).
      Medium devsel.  Fast back-to-back capable.  IRQ 9.  Master Capable.
No bu
rsts.  Min Gnt=252.Max Lat=14.
      Non-prefetchable 32 bit memory at 0x12000000.
      I/O at 0x10108000.
      I/O at 0x10108400.
      I/O at 0x10108800.
********* MY COMMENT LINE - MODEM ENDS HERE
*************************************
  Bus  0, device   9, function  2:
    USB Controller: VIA Technologies VT 82C586 Apollo USB (rev 2).
      Medium devsel.  Master Capable.  Latency=22.
      I/O at 0x300.
  Bus  0, device   9, function  1:
    IDE interface: VIA Technologies VT 82C586 Apollo IDE (rev 6).
      Medium devsel.  Fast back-to-back capable.  IRQ 14.  Master Capable.
Late
ncy=64.
      I/O at 0xcc00.
  Bus  0, device   9, function  0:
    ISA bridge: VIA Technologies VT 82C586 Apollo ISA (rev 39).
      Medium devsel.  Master Capable.  No bursts.
  Bus  0, device   7, function  0:
    Ethernet controller: DEC DC21142 (rev 65).
      Medium devsel.  Fast back-to-back capable.  IRQ 4.  Master Capable.
Laten
cy=64.  Min Gnt=20.Max Lat=40.
      I/O at 0x10100000.
      Non-prefetchable 32 bit memory at 0x3ffbe000.
  Bus  0, device   0, function  0:
    Memory: Galileo GT64011 (rev 17).
      Medium devsel.  Fast back-to-back capable.  Master Capable.
Latency=64.
      Non-prefetchable 32 bit memory at 0x8000000.
      Non-prefetchable 32 bit memory at 0x1c000000.
      Non-prefetchable 32 bit memory at 0x1f000000.
      Non-prefetchable 32 bit memory at 0x14000000.
      I/O at 0x14000000.

---------------------------------------------

[root@seaview /dev]# setserial /dev/ttyS4
/dev/ttyS4, UART: 16550A, Port: 0x10108000, IRQ: 2

[root@seaview /dev]# setserial /dev/ttyS4 spd_vhi
Cannot set serial info: Invalid argument
[root@seaview /dev]# setserial /dev/ttyS4 autoconfig
Cannot set serial info: Invalid argument
[root@seaview /dev]# setserial /dev/ttyS4 irq 2 port 0x10108000
Cannot set serial info: Invalid argument
[root@seaview /dev]# setserial /dev/ttyS4 irq 2
Cannot set serial info: Invalid argument

[root@seaview /dev]# setserial -a /dev/ttyS4
/dev/ttyS4, Line 4, UART: 16550A, Port: 0x10108000, IRQ: 2
        Baud_base: 115200, close_delay: 50, divisor: 0
        closing_wait: 3000, closing_wait2: infinte
        Flags: spd_normal

---------------------------------------------