Date: Sun, 30 Nov 2003 10:31:40 -0500 From: Dave Feustel <dfeustel@mindspring.com> To: James Van Artsdalen <james-freebsd-amd64@jrv.org>, freebsd-amd64@freebsd.org Subject: Re: disk controllers w/ 64-bit addressing? Message-ID: <200311301031.40578.dfeustel@mindspring.com> In-Reply-To: <200311260733.hAQ7XheT012676@bigtex.jrv.org> References: <200311260733.hAQ7XheT012676@bigtex.jrv.org>
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64-bit memory addressing for disk transfers can be done iin AMD native mode via programmed i/o. The question is whether 64-bit memory addressing via dma-controlled memory transfers is possible and/or supported via the disk driver. On Wednesday 26 November 2003 02:33 am, James Van Artsdalen wrote: > This is not exactly an authoritative or complete answer from > HighPoint, but it does suggest there's hope for an (relative to SCSI) > economic means of a disk system that doesn't need bounce buffers. > > Does anyone in FreeBSD already have a contact at HighPoint or should > I nag them to cough up a datasheet for whatever IC is used? > > The pictures show eight SATA ports and one control IC with no > ATA-to-SATA adapter chips in sight, so this probably isn't one of the > chips listed on their site but rather something new. > > Date: Wed, 26 Nov 2003 14:48:43 +0800 > To: James Van Artsdalen > From: "HighPoint Technologies Inc." <support@highpoint-tech.com> > Subject: Re: RocketRaid 1820 > > Dear Sir / Madam, > > Thanks for your contacting us! > The current driver for RR1820 only can work on the 32-bit OS. > > If you use the 32bit OS on Opteron, RR1820 can work properly, for Memory > Addressing, it is determined by the operating system directly. > > The 64bit-driver(Support 64bit OS) will support 64bit addressing, but it > hasn't released yet. > > Regards, > HighPoint Technologies Inc. > > At 04:13 2003-11-26, you wrote: > >Is the datasheet on the controller for the 1820 available? > > > >Can the 1820 address memory above 4 GB (i.e., Opteron)? > > > >I can see that the 1820 does 64-bit data: the question is if it does > >64-bit addresses too. > > _______________________________________________ > freebsd-amd64@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-amd64 > To unsubscribe, send any mail to "freebsd-amd64-unsubscribe@freebsd.org"
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