Date: Tue, 13 Apr 1999 12:18:08 +0930 From: Greg Lehey <grog@lemis.com> To: rick hamell <hamellr@dsinw.com>, Adam Dace <awd@kiwi.pyro.net> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Supported Socket 7 Motherboard UDMA Chipsets ? Message-ID: <19990413121808.A74226@lemis.com> In-Reply-To: <Pine.BSF.3.91.990412103531.17001A-100000@dsinw.com>; from rick hamell on Mon, Apr 12, 1999 at 10:39:32AM -0700 References: <Pine.LNX.4.00.9904120948530.7039-100000@kiwi.pyro.net> <Pine.BSF.3.91.990412103531.17001A-100000@dsinw.com>
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On Monday, 12 April 1999 at 10:39:32 -0700, rick hamell wrote:
>
>> Basically, I'm about to go out and buy a motherboard to create a server
>> with. I know I'll be using a UDMA disk and was wondering:
>
> Umm... if you're going to make a server with any kind of speed,
> you REALLY should look at SCSI drives not IDE. You're looking at about
> 10-15MB/Sec sustained vesus 30-50 at least in SCSI.
"*at least*"? I don't know any SCSI drives which will sustain 30
MB/s.
In fact, the maximum transfer rates between IDE and SCSI aren't that
different. What's different is the positioning time, which in a
random-access mode is just as important.
>> b) What, if any, Socket 7 motherboards contain UDMA chipsets that are
>> supported by FreeBSD?
>
> FreeBSD dosen't really care what chipset you have,
Oh yes it does, if you want to use UDMA.
> not like Windows does. I'm using a Soltek MBs with the VIA Chipset
> with no problems. Others are using the ASUS MB model you mentioned
> that same way.
The chip sets for which FreeBSD has specific support are listed in the
function ide_pci_probe, in /sys/pci/ide_pci.c. The following is the
listing from 4.0-CURRENT; you'll probably find that one or the other
is missing in earlier versions.
if (type == 0x71118086)
return ("Intel PIIX4 Bus-master IDE controller");
if (type == 0x70108086)
return ("Intel PIIX3 Bus-master IDE controller");
if (type == 0x12308086)
return ("Intel PIIX Bus-master IDE controller");
if (type == PROMISE_ULTRA33)
return ("Promise Ultra/33 IDE controller");
if (type == 0x05711106)
return ("VIA 82C586x (Apollo) Bus-master IDE controller");
if (type == 0x01021078)
return ("Cyrix 5530 Bus-master IDE controller");
if (type == 0x522910b9)
return ("Acer Aladdin IV/V (M5229) Bus-master IDE controller");
if (type == 0x55131039)
return ("SiS 5591 Bus-master IDE Controller");
if (data & 0x8000)
return ("PCI IDE controller (busmaster capable)");
There appears to be a problem with the SiS 5591 before revision d.
Note also the last line: if it can't be identified, it'll take generic
IDE settings, which may work OK if the BIOS sets the chipset up
correctly.
Greg
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