Trying to setup 16650 UART serial card in FreeBSD 3.3

Trying to setup 16650 UART serial card in FreeBSD 3.3

Post by Scott Blachowic » Tue, 19 Oct 1999 04:00:00


I just upgraded a system to FreeBSD 3.3 (from 2.2.5) and I thought I'd
make another stab at getting a 2-port ByteRunner TC-200 serial card going
(connected to an ISDN modem - a USR I-Modem). I regenerated a kernel with:

___device               sio0    at isa? port "IO_COM1" flags 0x10 tty irq 4
___device               sio1    at isa? port "IO_COM2" tty irq 3
___device               sio2    at isa? port "IO_COM3" flags 0x20000 tty irq 5

and the card is jumpered so that one of the serial ports is "COM3" at
IRQ 5.  I can talk to the modem using ppp's "term" command, so I know
it's hooked up.  I'm trying to configure it to take incoming calls and
have told getty to set the speed to 230400, but it gets errors like

   Oct 15 12:32:36 ns1 getty[479]: tcsetattr /dev/ttyd2: Invalid argument

and mgetty gets similar results.  My /var/log/messages file shows

   Oct 15 12:25:27 ns1 /kernel: sio0 at 0x3f8-0x3ff irq 4 flags 0x10 on isa
   Oct 15 12:25:27 ns1 /kernel: sio0: type 16550A
   Oct 15 12:25:27 ns1 /kernel: sio1 at 0x2f8-0x2ff irq 3 on isa
   Oct 15 12:25:27 ns1 /kernel: sio1: type 16550A
   Oct 15 12:25:27 ns1 /kernel: sio2 at 0x3e8-0x3ef irq 5 on isa
   Oct 15 12:25:27 ns1 /kernel: sio2: type 16550A

Shouldn't it tell me 'flags 0x20000' and/or '16650' there?  Any suggestions on
setting this up (other than set the speed to 115200 instead of 230400)?  I can
set it to 115200 to continue with the setup, but it would be real nice to get
it set to 230K or higher longer term...



1. External Serial Cards - new 16650 and 16750 UART

I see that setserial supports 16550 uart chips.  I just plugged in two 16650
cards to be used with
ISDN modems.  How can I take full advantage of these cards - they should be
able to go as high
as 460.8 kbs.  When I plug them in - the system just sees them as 16550.

Please Help


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