From owner-freebsd-hackers  Thu Apr  6 19: 6:28 2000
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To: "Gary T. Corcoran" <gcorcoran@lucent.com>
Subject: Re: How to get multiple PCI I/O base addresses in attach()? 
Cc: Mike Smith <msmith@freebsd.org>, freebsd-hackers@freebsd.org
In-reply-to: Your message of "Thu, 06 Apr 2000 20:50:45 EDT."
		<38ED30E5.CA9D9578@lucent.com> 
References: <38ED30E5.CA9D9578@lucent.com>  <200004070010.RAA01618@mass.cdrom.com> 
Date: Thu, 06 Apr 2000 20:05:32 -0600
From: Warner Losh <imp@village.org>
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In message <38ED30E5.CA9D9578@lucent.com> "Gary T. Corcoran" writes:
: #define NdisRawReadPortUchar( _port, _ptr)  *(_ptr) = inb((_port))

Yes.  The bus_space_handle_t that rman_get_bushandle returns on the
i386 is the portnumber in I/O space.  However, you'll need a separate
one for each of them since you don't know where the bios is going to
map the areas relative to one another.

: for x86 machines, the "handle" is, effectively, really the I/O base address.

Yes.

: As long as I stick to x86 machines, do you see any problem in doing this?

As long as they don't cahnge too much, you should be OK at this.

Warner


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