Date: Mon, 27 Nov 2006 07:50:20 GMT From: Marcel Moolenaar <xcllnt@mac.com> To: freebsd-i386@FreeBSD.org Subject: Re: i386/105616: UART PCI device just silent... Message-ID: <200611270750.kAR7oK6p071168@freefall.freebsd.org>
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The following reply was made to PR i386/105616; it has been noted by GNATS. From: Marcel Moolenaar <xcllnt@mac.com> To: puc-uart@oldach.net (Helge Oldach) Cc: FreeBSD-gnats-submit@FreeBSD.org Subject: Re: i386/105616: UART PCI device just silent... Date: Sun, 26 Nov 2006 23:48:48 -0800 On Nov 26, 2006, at 11:42 PM, Helge Oldach wrote: > Hi Marcel, > >> I think it's time to go back to the question why uart(4) detects >> the SUN 1889 chipset as 166550 compatible and not as 16650 >> compatible. I think there may be a chipset-specific issue here >> that uart(4) seems to trigger. I need to get one of those cards >> and analyze the problem in more detail. > > Note that also sio detects it as a 16550A. The sio(4) driver can only differentiate between non-FIFO and FIFO hardware (roughly speaking). It cannot differentiate between 16550, 16650, 16750 and/or 16950. > If it helps, I can place this card in a test machine over here for a > couple of days and plug some serial device to it, so that you can play > with it from remote. That may take a day or two to set up however. That would definitely help. If you have a cross-over cable then you can connect both UART interfaces with each other, which makes testing much easier. -- Marcel Moolenaar xcllnt@mac.com
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