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Date:      Mon, 26 Jan 2009 15:00:11 +0200
From:      Timo Rikkonen <Timo.Rikkonen@syncrontech.com>
To:        "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org>
Subject:   /dev/cuau* ports hang after a while
Message-ID:  <E6A9CAA76548CB4EB02D2E3B174DD3B118E9A8E69E@ink.sad.syncrontech.com>

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Hi,

We are using "VScom PCI-200L" and "Moxa Technologies, C168H/PCI" -cards for=
 serial ports. After installing 7.0 the ports or the connection to the port=
 hang after a while. A "while" could be half-a-day or 10 minutes.
There is no error message to be seen anywhere.

Not all ports hang at the same time, it could be just one or two of them. E=
arlier versions (6.2-RELEASE) work just fine.
The ports have different devicenames after 7.0, in 6.2 they were /dev/cuad4=
-7, now they are /dev/cuau0-3 (uart?)

dmesg-output considering the card:
puc0: <VScom PCI-200L> port 0xbc00-0xbc07,0xb800-0xb807,0xb400-0xb407,0xb00=
0-0xb007 mem 0xfe5ffc00-0xfe5ffc3f irq 21 at device 0.0 on pci1
puc0: [FILTER]
uart0: <16550 or compatible> on puc0
uart0: [FILTER]
uart1: <16550 or compatible> on puc0
uart1: [FILTER]

the same in 6.2:
puc0: <VScom PCI-200L> port 0xbc00-0xbc07,0xb800-0xb807,0xb400-0xb407,0xb00=
0-
0xb007 mem 0xfe5ffc00-0xfe5ffc3f irq 21 at device 0.0 on pci1
sio4: <VScom PCI-200L> on puc0
sio4: type 16550A
sio4: unable to activate interrupt in fast mode - using normal mode
sio5: <VScom PCI-200L> on puc0
sio5: type 16550A
sio5: unable to activate interrupt in fast mode - using normal mode

We have over 20 installations, now two of them have been upgraded to 7.0 wi=
th mentioned side effects.

Yours,
Timo Rikkonen



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