Date: Tue, 08 Feb 2005 10:11:14 +0100 From: Gerald Heinig <gheinig@syskonnect.de> To: Stephan Uphoff <ups@tree.com> Cc: hackers@freebsd.org Subject: Re: Firewire blues Message-ID: <42088232.1030001@syskonnect.de> In-Reply-To: <1107798981.6309.9.camel@palm.tree.com> References: <420731DD.3050206@syskonnect.de> <1107798981.6309.9.camel@palm.tree.com>
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Stephan Uphoff wrote: > On Mon, 2005-02-07 at 04:16, Gerald Heinig wrote: > >>Hi all, >> >>I'm having problems getting two 5.3-RELEASE boxes to communicate over >>firewire. >>I'm using two VIA Vt-6306 -based cards which are correctly recognised at >>boot-time. >> >>I've loaded the dcons and dconschat modules and obtained both firewire >>addresses via fwcontrol. > > > I assume you mean dcons_crom module instead of dconschat. Yes, sorry, my mistake. > > Did you reset the firewire bus? I did reset it, but only on the debugging system, not on the target system. > > DCONS_CROM(4): > ..... > BUGS > If you load dcons_crom.ko manually after booted, you may have to > initiate > a bus reset by ``fwcontrol -r'' to update Configuration ROM. > > > >>When I try to set up a connection with dconschat I get >> >>[dcons disconnected (get crom failed)] >> >>The exact command I gave is: >> >>dconschat -br -G 5556 -t <the remote firewire address> >> >>I also tried setting the control ROM address with the -a option, to no >>avail. >> >>Anyone have any ideas as to where I'm going wrong? >> >>BTW, I'm trying to set up remote debugging with gdb to debug a kernel hang. > > > I recall some issues with gdb and firewire as a module that may or may > not be fixed. > I recommend to put the dcons into the kernel to avoid any problems. I tried that too. There are a few additional flags that can be set. Of particular interest are DCONS_FORCE_CONSOLE and DCONS_FORCE_GDB. I presume I should set FORCE_CONSOLE to 1 if I want a console over firewire, am I right? I'll take a look and see if there are any bugfixes for firewire. Thanks for the reply! Cheers, Gerald
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