A fairly quick read of the PDF at http://www.intel.com/content/www/us/en/io/universal-serial-bus/extensible-host-controler-interface-usb-xhci.html makes it look like the xHCI controllers are able to be initialized in a 2.0-compatible fashion. Of course, one would lose out on the features added by USB 3.0 (and, soon, 3.1…) but at least the ports on a system would not be, for all intents and purposes, dead.
I do not have illumos running on hardware with USB 3 ports (and I don’t think any of the hypervisors yet support xHCI-IOV VFs [virtualized controllers]), so this is not something I was able test before chiming in. Please disregard this entire email and don't bother reading further if they are initialized that way currently. So, how hard would it be for an interested party to at least bring the controllers up in USB 2 mode, I wonder… It seems like a more approachable problem than doing a full implementation, which could be seen as "pointless extra work" since it's inevitable that full xHCI support must come at some point. However, if no one is willing and able to do a full implementation at this time, I see no reason to discourage someone who has an interest/need for "something that works" to do a minimal implementation. Matt -- Matt Lewandowsky Big Geek Greenviolet [email protected] http://www.greenviolet.net +1 415 578 5782 (US) +44 844 484 8254 (UK) Sent from my BlackBerry 10 smartphone. From: Garrett D'Amore via illumos-discuss Sent: Thursday, 13 November 2014 07:29 To: [email protected]; Jason Lawrence Reply To: [email protected] Subject: Re: [discuss] USB3 (xhci) Support? Its just a matter of someone with the appropriate skills and time getting the work done. I’ve been wanting to do the work myself for some time now, but I also have a great number of other priorities I’m working on too. - Garrett > On Nov 13, 2014, at 7:20 AM, Jason Lawrence via illumos-discuss > <[email protected]> wrote: > > OpenBSD now has initial support for USB3: > > http://undeadly.org/cgi?action=article&sid=20141110153505 > > Could the work done there have any bearing on support in Illumos any time > soon? > > > ------------------------------------------- > illumos-discuss > Archives: https://www.listbox.com/member/archive/182180/=now > RSS Feed: https://www.listbox.com/member/archive/rss/182180/22003744-9012f59c > Modify Your Subscription: https://www.listbox.com/member/?&; > Powered by Listbox: http://www.listbox.com ------------------------------------------- illumos-discuss Archives: https://www.listbox.com/member/archive/182180/=now RSS Feed: https://www.listbox.com/member/archive/rss/182180/21175668-c2484562 Modify Your Subscription: https://www.listbox.com/member/?&; Powered by Listbox: http://www.listbox.com ------------------------------------------- illumos-discuss Archives: https://www.listbox.com/member/archive/182180/=now RSS Feed: https://www.listbox.com/member/archive/rss/182180/21175430-2e6923be Modify Your Subscription: https://www.listbox.com/member/?member_id=21175430&id_secret=21175430-6a77cda4 Powered by Listbox: http://www.listbox.com
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