Date: Tue, 03 Jun 1997 10:27:58 -0400 From: Larry Lile <lile@stdio.com> To: hackers@FreeBSD.ORG Subject: Re: Tropic token ring driver Message-ID: <339429EE.41C6@stdio.com> References: <3392FC14.41C6@stdio.com> <19970602223654.XZ56494@uriah.heep.sax.de>
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J Wunsch wrote: > > As Larry Lile wrote: > > > Right now I am picking up the shared ram address > > from the foo->id_maddr in the probe routine and kvtop(foo->id_maddr) > > gives the correct physical address. What I would like to do is > > pick up the address from 0x0a20 (Which after some math is usually > > either 0xcc000 or 0xdc000) and get a kvm address to it, ie the > > inverse of kvtop. > > Do you only need the KVA of it (i.e., you don't need it for things > like DMA)? If the shared memory is always in the ISA hole, there's a > fixed mapping for it (i think you need to add 0xf000000 to the > physical address). For devices that go into the higher memory area > (like PCI), you need to map it yourself anyway. > That was what I had guessed from looking at the values returned by id_maddr, but I wanted to be sure. > > Also, how do you get your driver registered into the boot-up > > config? (Right now it would be helpful for debugging) > > That's still handwork, to go into /sys/i386/i386/userconfig.c. > That helped move things along. Know it appears I have my driver defined in all the right places. :) Thanks for the help J"org. Now, does anyone have a Token-ring network architechture reference (IBM Part # SC30-3374-02) to donate (or loan) to the cause? My friend is trying to find his old copy, but that could take a while. If not I guess I can just cough up the 76.50 for it myself, and it only took about 5 days to get the card ref from IBM so this shouldn't take much longer. I remember someone talking about the arp code for a fddi card being similar, but I cant seem to locate that again. So if you're still out there drop me a line. Thanks -- Larry Lile lile@stdio.com
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