Alexander Carver wrote:
quoted text
> Miod Vallat wrote:
>>> Hi all,
>>>
>>> I've been working on getting gpsd working on one of my old Sun IPXes 
>>> but I've run into a problem with ldattach needing the /dev/cuaa 
>>> device.  The serial port /dev/ttya is working with gpsd directly but 
>>> ldattach requires /dev/cuaa.  However, according to the system logs, 
>>> ldattach issues the error (ldattach is run as root):
>>>
>>> ldattach: can't open /dev/cuaa: Device not configured
>>
>> Oops. Big oops. cua support for zstty was removed about 7.5 years ago,
>> it was intended to be brought back, but I had completely forgotten about
>> this.
>>
>> Does the following diff help? It should apply cleanly to 4.6 too (apply
>> in sys/arch/sparc/dev).
>>
>> Miod
> 
> I just patched the sources and am now compiling (but slowly since it's 
> an IPX).  I'll let you know as soon as the compile finishes and I reboot 
> the new kernel.

Compile is complete (finally) and the patch seemed to work for partially 
enabling the /dev/cua* devices.  I was able to open one with minicom and 
read data from the port.

However, when I'm using ldattach it just sits there.  Running the following:

ldattach -d -p -s 19200 nmea /dev/cuaa

just sits, it never returns a PTY but it never errors out, either.  It 
just sits and sits until I terminate it.

If I change the device to ttya:

ldattach -d -p -s 19200 nmea /dev/ttya

then ldattach returns the PTY and opens the port at the proper speed and 
data does pass through from the port to the PTY.

So I don't understand why ldattach is having an issue with /dev/cua* but 
appears to work wtih /dev/tty*.

I say appears to work because the handshake lines aren't being reported 
by ldattach either.  I want to use the DCD line for sending PPS data 
from the gps on that port but those transitions aren't being conveyed by 
ldattach at all.  I am suspecting it has to do with having opened 
/dev/ttya instead of /dev/cuaa which means I need to still resolve the 
ttya/cuaa issue.

Any suggestions would be greatly appreciated.