From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <14dd2a7f51450785b176561c297d959c@plan9.bell-labs.com>
To: 9fans@cse.psu.edu
Subject: Re: Again: (self)hosted Plan9? Was: [9fans] extending xen to allow
Date: Sat,  9 Dec 2006 23:55:11 -0500
From: geoff@plan9.bell-labs.com
In-Reply-To: <20061209125610.E40B721EA4F@medicine-bow.quanstro.net>
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The SATA controllers I've encountered so far either emulate ordinary
(P)ATA controllers or have a BIOS setting to optionally do so.  I'm
not sure that there's much to be gained by implementing the AHCI or
other oddball interfaces.

As I mentioned at IWP9, I'm integrating Charles Forsyth's OHCI driver
into the devusb framework, and will probably end up having to write
EHCI (USB 2) support.  I've been working on getting Richard Miller's
usbsfs working with a dozen or so USB disk-like devices (MP3 players,
DVD drives, flash disks) and they are now mostly working, after adding
code to probe and use LUNs (logical unit numbers).  Some of the dumber
devices seem to be very sensitive to exactly how you talk to them and
go off into the weeds if they don't approve, so getting a version of
usbsfs that they can all talk to is taking longer than expected.

Gigabit Ethernet seems to be pretty well handled; we've got drivers
for the Intel controllers (though Intel keeps introducing new
not-quite compatible variations) and the Realtek 8169, though it
pauses and thus has low throughput on my machine.  Do the other
gigabit controllers appear on lots of motherboards?