From owner-freebsd-hackers  Mon Jun  2 10:00:28 1997
Return-Path: <owner-hackers>
Received: (from root@localhost)
          by hub.freebsd.org (8.8.5/8.8.5) id KAA28558
          for hackers-outgoing; Mon, 2 Jun 1997 10:00:28 -0700 (PDT)
Received: from heathers.stdio.com (root@heathers.stdio.com [204.152.114.65])
          by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id KAA28541
          for <hackers@FreeBSD.ORG>; Mon, 2 Jun 1997 10:00:24 -0700 (PDT)
Received: from frog (socks7.raleigh.ibm.com [204.146.167.114]) by heathers.stdio.com (8.6.12/8.6.13) with SMTP id KAA11921 for <hackers@FreeBSD.ORG>; Mon, 2 Jun 1997 10:21:33 -0400
Message-ID: <3392FC14.41C6@stdio.com>
Date: Mon, 02 Jun 1997 13:00:04 -0400
From: Larry Lile <lile@stdio.com>
X-Mailer: Mozilla 3.01 (X11; I; AIX 1)
MIME-Version: 1.0
To: hackers@FreeBSD.ORG
Subject: Tropic token ring driver
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Sender: owner-hackers@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

Hi all,

I am working on a tropic chipset token ring driver. I was able
to get the docs from NS and IBM.  I can now probe IBM isa token
ring cards and talk to both the shared ram and hardware ports.  
What I would like to know is how to map a physical address to a
kernel address so that I do not have to "wire" the configuration
into the kernel.  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.

Also, how do you get your driver registered into the boot-up
config? (Right now it would be helpful for debugging) 

Thanks,

Larry Lile
lile@stdio.com