Date: Mon, 28 Oct 1996 20:31:53 -0500 (EST) From: Thomas David Rivers <ponds!rivers@dg-rtp.dg.com> To: eischen@vigrid.com, ponds!freefall.freebsd.org!freebsd-hackers, ponds!ponds!rivers Subject: Re: AHA2940UW differences with 2.1.5-STABLE. Message-ID: <199610290131.UAA00320@lakes.water.net>
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> > > I've just installed 2.1.5-STABLE (by grabbing the sys > > directory from freefall.cdrom.com and rebuilding a kernel) > > on a machine with an AHA 2940UW. > > > > I noticed a lit of changes to the aic7xxx code since 2.1.5R. > > > > I've also noticed a difference in how the two operate. I don't > > know if this is good, or bad, just different. > > > > 2.1.5R reports my SCSI devices as (from an older /var/log/messages, this is > > going to be "wide" - so expand your window :-) ): > [...] > > Oct 20 21:33:41 lakes /kernel: (ahc0:1:0): "MICROP 1548-15MZ1077802 HZ2P" type 0 fixed SCSI 1 > > Oct 20 21:33:41 lakes /kernel: sd1(ahc0:1:0): Direct-Access 1635MB (3349512 512 byte sectors) > > Oct 20 21:33:41 lakes /kernel: ahc0:A:2: refuses WIDE negotiation. Using 8bit transfers > > Oct 20 21:33:42 lakes /kernel: ahc0:A:2: refuses syncronous negotiation. Using asyncronous transfers > > Oct 20 21:33:42 lakes /kernel: (ahc0:2:0): "WANGTEK 5150ES SCSI FA23 08" type 1 removable SCSI 1 > > > You'll notice here that the "MICROP 1548-15MZ1077802 HZ2P" does not > > negotiate WIDE data paths. This is correct, as this is an ancient > > SCSI I drive (from about 1989.) > > > > My question is - is this part of the improvements in 2.1.5-STABLE? > > If you have enable Wide negotiation set in SCSI Select Utilities, > then it will attempt wide negotiation. Look at your tape drive > above; you must have wide data transfers set in SCSI Select for > the tape drive too. If you disable wide data transfers in SCSI > Select Utilities for the Micropolis and the Wangetk, then you > can get rid of both messages ;-) > Well, yes - that's true... But, my point was that 2.1.5-STABLE acts differently than 2.1.5-RELEASE on the same hardware with the exactly the same configuration. My question is - is that "on purpose" (i.e. related to the aic7xxx fixes), or is something else lurking around here... - Dave R. -
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