USB 3.0 and Linux
Dec 15, 2008, 17:32 (0 Talkback[s])
(Other stories by Sarah Sharp)
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"For Linux to have basic USB 3.0 support, two things need to be
added. First, we need to add support to the Linux USB stack to
handle the new device speed and other changes mandated by the USB
3.0 bus specification. Second, we need to have a driver for the
xHCI host controller. A host controller is the hardware that sits
behind your USB port and talks to the USB devices you plug in.
"Now that the bus specification is public, I can start pushing
the patches for the USB core changes. They will need to be reviewed
and possibly changed before they make it into the mainline kernel.
Once the changes make it into the mainline kernel, they'll be
picked up by Linux Operating System Vendors like RedHat, Novell,
"The xHCI host controller driver is a little trickier. The xHCI
specification is not public yet. It's currently available under NDA
with Intel as a 0.9 draft specification. Since it's not a public
specification, I'm forbidden to ship code that would reveal what's
in the specification. That means the xHCI driver can't be sent out
for review by the whole Linux community until the xHCI
specification is public. The driver is much bigger than the USB
core code changes, so I know it will go through several review
iterations before it gets accepted into the mainline kernel."