Missing serial ports...

[Ben Crosby]

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All,

I did a search in the archive, and this was discussed in June 2003,
but I'm still stumped.

I've just installed 5.2.1-RELEASE on five Sun Netra 120 servers, and I
am unable to use the second serial port.  There are no hints in the
dmesg output, and only /dev/ttya exists in the /dev directory.

To be honest, I'm not sure what driver is being used to see the
/dev/ttya device on the standard kernel.

I'd like to be able to hook up a GPS reciever to the second serial
port for accurate NTP source.

I'd very much appreciate some assistance with ideas or a solution. The
solution proposed in June 2003's discussion:

http://lists.freebsd.org/mailman/htdig/freebsd-sparc64/2003-June/000242.html

made reference to an SIO driver, so I compiled a custom kernel,
created the device.hints file as follows:

hint.sio.0.at="isa"
hint.sio.0.port="0x3F8"
hint.sio.0.irq="4"
hint.sio.1.at="isa"
hint.sio.1.port="0x2E8"

installed it, and lo, dmesg now reports:

sio0: configured irq 4 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0 at port 0x3f8-0x3ff irq 4 on isa0
sio0: type 16550A
sio1 at port 0x2e8-0x2ef on isa0
sio1: type 16550A

And, I have /dev/ttyd0 and /dev/ttyd1, however, I'm not 100%
certain this is the right way to solve the problem.

Here's the relevant entry from ofwdump:

        Node 0xf007de68: serial
          port-a-ignore-cd:
          nohupcl:
            00
          interrupt-priorities:
            00 00 00 0c 00 00 00 0c
          reg:
            00 00 00 00 00 00 03 f8 00 00 00 08
          compatible:
            73 75 31 36 35 35 30 00 73 75 00
          device_type:
            73 65 72 69 61 6c 00
            'serial'
          name:
            73 65 72 69 61 6c 00
            'serial'
          interrupts:
            00 00 00 04

and:

        Node 0xf007fb54: serial
          port-b-ignore-cd:
          nohupcl:
            00
          interrupt-priorities:
            00 00 00 0c 00 00 00 0c
          reg:
            00 00 00 00 00 00 02 e8 00 00 00 08
          compatible:
            73 75 31 36 35 35 30 00 73 75 00
          device_type:
            73 65 72 69 61 6c 00
            'serial'
          name:
            73 65 72 69 61 6c 00
            'serial'
          interrupts:
            00 00 00 04

Many thanks,
Ben.

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