Date: Fri, 25 Nov 2016 23:30:57 +0300 From: Lev Serebryakov <lev@FreeBSD.org> To: Hans Petter Selasky <hps@selasky.org>, freebsd-hardware@freebsd.org, freebsd-usb@freebsd.org Subject: Re: Is here any work on USB Attached SCSI (UAS/UASP) support? Message-ID: <96c9e5ed-f35e-d9d1-16ba-b967bec3bdf4@FreeBSD.org> In-Reply-To: <ddabe5f5-23a9-0fda-f732-bcc7b66e774b@selasky.org> References: <561b3e61-0df2-0eba-24d9-7edf07a7c0ea@FreeBSD.org> <ddabe5f5-23a9-0fda-f732-bcc7b66e774b@selasky.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On 25.11.2016 17:57, Hans Petter Selasky wrote: > For Super Speed (USB 3.0) UASP uses streams mode instead of regular bulk > transfers from what I can see, which is not supported by all XHCI > controllers. Intel's ones? ASMedia's ones? Anyway, UASP is new protocol, but it is SCSI at its core, so sit should be new transport layer for CAM? > In USB 2.0 mode it will work using BULK only. Not sure if the vendors > provide BULK only configurations for USB 3.0. Attach 5 disks via one USB2 links is not good idea anyway. -- // Lev Serebryakov
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?96c9e5ed-f35e-d9d1-16ba-b967bec3bdf4>