Date: Fri, 19 Nov 2004 10:47:30 +0100 From: =?ISO-8859-1?Q?S=F8ren_Schmidt?= <sos@DeepCore.dk> To: "Wilkinson, Alex" <alex.wilkinson@dsto.defence.gov.au> Cc: freebsd-current@freebsd.org Subject: Re: sil3112a SATA Controller, current status Message-ID: <419DC132.2000707@DeepCore.dk> In-Reply-To: <20041119040417.GC768@squash.dsto.defence.gov.au> References: <f8646080041118045410a4629c@mail.gmail.com> <419CEFB9.7060604@DeepCore.dk> <20041119040417.GC768@squash.dsto.defence.gov.au>
next in thread | previous in thread | raw e-mail | index | archive | help
Wilkinson, Alex wrote: > Soren, I know that TCQ stands for 'Tagged Command Queing',=20 > but how about NCQ ? NCQ =3D Native Command Queueing, semilar to TCQ but with different=20 commands and sematics, still limitted to 32 tags. IIRC there is no "bus=20 release" cycle in NCQ as SATA only has one device pr chain (well, as=20 long as you dont use port multipliers that is). > And how does one find out if their SATA disk is really using a > PATA-SATA converter chip ? smartmon ? Either by asking then vendor or by visual inspection, you cannot tell pr = software, at least not in any reliable way AFAIK. --=20 -S=F8ren
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?419DC132.2000707>