Date: Sat, 26 Nov 2016 08:57:23 +0100 From: Hans Petter Selasky <hps@selasky.org> To: lev@FreeBSD.org, freebsd-hardware@freebsd.org, freebsd-usb@freebsd.org Subject: Re: Is here any work on USB Attached SCSI (UAS/UASP) support? Message-ID: <c965ebf7-b475-b38e-a186-bfb4a630a0cf@selasky.org> In-Reply-To: <96c9e5ed-f35e-d9d1-16ba-b967bec3bdf4@FreeBSD.org> References: <561b3e61-0df2-0eba-24d9-7edf07a7c0ea@FreeBSD.org> <ddabe5f5-23a9-0fda-f732-bcc7b66e774b@selasky.org> <96c9e5ed-f35e-d9d1-16ba-b967bec3bdf4@FreeBSD.org>
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On 11/25/16 21:30, Lev Serebryakov wrote: > 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? Yes, UASP is using SCSI. I think INTELs XHCIs support it, but others may not. The whole concept about USB streams has been controversial in USB circles and is disabled in FreeBSD by default, because it has not been tested properly yet due to lack of hardware. sysctl hw.usb.xhci.streams=1 --HPS
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