Date: Sun, 10 Oct 1999 11:04:50 +0200 (CEST) From: Nick Hibma <hibma@skylink.it> To: "Kenneth D. Merry" <ken@kdm.org> Cc: Randell Jesup <rjesup@wgate.com>, hackers@FreeBSD.ORG Subject: Re: CAM-ification - documentation Message-ID: <Pine.BSF.4.10.9910101103110.6259-100000@heidi.plazza.it> In-Reply-To: <199910092224.QAA09485@panzer.kdm.org>
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> > Ick. Polling == bad. Interrupts == good. This isn't a single- > > tasking OS ala Win9x. This goes double for SCSI drivers, which are > > inherently async and overlapped. > > I never said polling was good. Nick just asked about polling, and I > commented on how it could be done. I have no idea why he wanted to know > about polling, though. Well, I am not sure whether I need polling, but there are some problems related to the fact that multiple USB transactions are needed for one SCSI transaction. Combined with the fact that some requests are done asynchronously (clear endpoint halt at the end of a transaction if the transaction failed) it might be useful to do polling to avoid massively complex code. Nick -- e-Mail: hibma@skylink.it To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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