From: Stefan Richter <stefanr@s5r6.in-berlin.de>
To: SCSI Mailing List <linux-scsi@vger.kernel.org>
Cc: Luben Tuikov <luben_tuikov@adaptec.com>,
Andre Hedrick <andre@linux-ide.org>,
Patrick Mansfield <patmans@us.ibm.com>,
Luben Tuikov <ltuikov@yahoo.com>, Jeff Garzik <jgarzik@pobox.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@osdl.org>, Linus Torvalds <torvalds@osdl.org>
Subject: Re: I request inclusion of SAS Transport Layer and AIC-94xx into the kernel
Date: Thu, 29 Sep 2005 21:09:11 +0200 [thread overview]
Message-ID: <433C3BD7.4090104@s5r6.in-berlin.de> (raw)
In-Reply-To: <433C0285.3050106@adaptec.com>
Luben Tuikov wrote:
> On 09/28/05 18:43, Andre Hedrick wrote:
>>Have you and company considered the approach of mapping to a library of
>>sorts?
>
> Hmm, it is not a library.
>
> It is a layer, again, because of what the chip actually is, and because
> of what it implements.
>
> Take a look at the announcement text, I do give some description there
> and in the code the drivers/scsi/sas-class/README file describes
> the event/managment infrastructure. Also you can take a look at the code.
> http://linux.adaptec.com/sas/
>
> What you'll see in the code is:
>
> hardware implementation (interconnect, SAM 4.15, 1.3)
> firmware implementation (interconnect, SDS, SAM 4.6, 1.3)
> LLDD (SAM, section 5, 6, 7)
> Transport Layer (SAM 4.15, SAS)
> SCSI Core (SAM section 4,5,8)
> Commmand Sets (SAM section 1)
>
> A very nice explanation in latest SAM4r03,
> section 4.15 The SCSI model for distributed communications.
BTW, Linux' implementations of transports like USB storage and SBP-2
have always been similarly layered. (Actually they come with at least
one more layer between LLDD and SCSI core.) Needless to say that these
transports need their specific managing infrastructures. So this
layering is not at all new to Linux.
> Now for MPT based solutions you have:
>
> LLDD (SAM, section 5, 6, 7)
> SCSI Core (SAM section 4,5,8)
> Commmand Sets (SAM section 1)
>
> You see? No Transport Layer between LLDD and SCSI Core!
> Why? Because all this work is done in FIRMWARE!
--
Stefan Richter
-=====-=-=-= =--= ===-=
http://arcgraph.de/sr/
next prev parent reply other threads:[~2005-09-29 19:11 UTC|newest]
Thread overview: 169+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-26 19:38 I request inclusion of SAS Transport Layer and AIC-94xx into the kernel Luben Tuikov
2005-09-27 21:55 ` Jeff Garzik
2005-09-27 22:51 ` Luben Tuikov
2005-09-27 23:14 ` Andre Hedrick
2005-09-28 11:37 ` Luben Tuikov
2005-09-28 12:32 ` Matthew Wilcox
2005-09-28 14:50 ` Linus Torvalds
2005-09-30 1:56 ` Junio C Hamano
2005-09-28 16:27 ` Patrick Mansfield
2005-09-28 16:34 ` Luben Tuikov
2005-09-28 19:45 ` Andre Hedrick
2005-09-28 20:56 ` Luben Tuikov
2005-09-28 22:35 ` Willy Tarreau
2005-09-28 23:22 ` Jeff Garzik
2005-09-28 23:29 ` David S. Miller
2005-09-29 5:30 ` Andre Hedrick
2005-09-29 7:24 ` David S. Miller
2005-09-30 7:36 ` Andre Hedrick
2005-09-30 18:34 ` Luben Tuikov
2005-09-30 18:50 ` Kyle Moffett
2005-09-30 19:08 ` Luben Tuikov
2005-09-30 21:31 ` Kyle Moffett
2005-09-30 22:10 ` Greg Freemyer
2005-09-30 22:19 ` Luben Tuikov
2005-09-30 23:54 ` Jeff Garzik
2005-10-01 4:58 ` Willy Tarreau
2005-10-03 15:08 ` Luben Tuikov
2005-10-03 14:04 ` Luben Tuikov
2005-09-30 22:14 ` Luben Tuikov
2005-10-01 0:33 ` Jeff Garzik
2005-10-03 14:18 ` Luben Tuikov
2005-10-03 14:26 ` I request inclusion of SAS Transport Layer and AIC-94xx intothe kernel David Lang
2005-10-03 15:19 ` Luben Tuikov
2005-10-03 15:30 ` I request inclusion of SAS Transport Layer and AIC-94xx intothekernel David Lang
2005-10-03 16:01 ` I request inclusion of SAS Transport Layer and AIC-94xx into the kernel Jeff Garzik
2005-09-30 20:45 ` James Bottomley
2005-09-30 22:05 ` Luben Tuikov
2005-10-01 0:38 ` Jeff Garzik
2005-10-03 15:27 ` Luben Tuikov
2005-10-03 16:28 ` Jeff Garzik
2005-09-30 22:04 ` Andre Hedrick
2005-09-30 22:32 ` Luben Tuikov
2005-09-30 23:57 ` Jeff Garzik
2005-10-03 14:15 ` Luben Tuikov
2005-10-03 15:57 ` Jeff Garzik
2005-10-03 16:23 ` Luben Tuikov
2005-10-03 16:48 ` Jeff Garzik
2005-10-03 19:03 ` Luben Tuikov
2005-10-03 19:32 ` Mike Christie
2005-10-03 20:15 ` Jeff Garzik
2005-10-03 19:10 ` Mike Christie
2005-09-30 18:51 ` Luben Tuikov
2005-09-29 14:33 ` Luben Tuikov
2005-09-29 14:48 ` Jeff Garzik
2005-09-29 15:50 ` Luben Tuikov
2005-09-29 16:54 ` Jeff Garzik
2005-09-29 18:25 ` Luben Tuikov
2005-09-29 15:15 ` grundig
2005-09-29 15:17 ` Bernd Petrovitsch
2005-09-29 16:33 ` Luben Tuikov
2005-09-29 16:56 ` Jeff Garzik
2005-09-29 16:58 ` Luben Tuikov
2005-09-29 17:03 ` Jeff Garzik
2005-09-29 18:09 ` Gerrit Huizenga
2005-09-29 17:13 ` Bernd Petrovitsch
2005-09-29 18:39 ` Luben Tuikov
2005-09-29 22:43 ` Joel Becker
2005-09-29 17:52 ` John Stoffel
2005-09-29 19:20 ` Bruce Ferrell
2005-09-28 22:43 ` Andre Hedrick
2005-09-29 15:04 ` Luben Tuikov
2005-09-29 15:08 ` Jeff Garzik
2005-09-29 16:22 ` Luben Tuikov
2005-09-29 19:09 ` Stefan Richter [this message]
2005-09-29 22:06 ` Luben Tuikov
2005-09-28 16:30 ` Valdis.Kletnieks
2005-09-28 16:35 ` Luben Tuikov
2005-09-28 2:02 ` Jeff Garzik
2005-09-28 20:36 ` Luben Tuikov
2005-09-28 21:00 ` Jeff Garzik
2005-09-28 22:10 ` Luben Tuikov
2005-09-28 23:04 ` Jeff Garzik
2005-09-29 4:04 ` Willy Tarreau
2005-09-29 7:44 ` Arjan van de Ven
2005-09-29 15:09 ` Luben Tuikov
2005-09-29 15:20 ` Jeff Garzik
2005-09-29 16:56 ` Luben Tuikov
2005-09-29 17:11 ` Jeff Garzik
2005-09-30 18:16 ` Joe Bob Spamtest
2005-09-29 17:15 ` Stefan Richter
2005-09-29 17:29 ` Jeff Garzik
2005-09-29 19:32 ` Willy Tarreau
2005-09-29 19:57 ` Linus Torvalds
2005-09-29 22:49 ` jerome lacoste
2005-09-29 23:20 ` Luben Tuikov
2005-09-29 23:57 ` Prasenjit Sarkar
2005-09-30 6:35 ` Andre Hedrick
2005-09-30 0:35 ` Linus Torvalds
2005-09-30 1:25 ` Hua Zhong
2005-09-30 2:42 ` Marcin Dalecki
2005-09-30 19:12 ` Joe Bob Spamtest
2005-09-30 19:38 ` Bob Copeland
2005-09-30 7:29 ` Douglas Gilbert
2005-09-30 14:23 ` Luben Tuikov
2005-09-30 16:26 ` Andrew Patterson
2005-09-30 16:47 ` Luben Tuikov
2005-09-30 14:07 ` Luben Tuikov
2005-09-30 5:31 ` Theodore Ts'o
2005-09-30 6:52 ` Andre Hedrick
2005-09-29 19:59 ` Stefan Richter
2005-09-29 19:37 ` Stefan Richter
2005-09-29 19:22 ` Stefan Richter
2005-09-27 13:07 Luben Tuikov
2005-09-27 13:19 ` Christoph Hellwig
2005-09-27 15:01 ` Luben Tuikov
2005-09-27 15:53 ` James Bottomley
2005-09-27 19:35 ` Luben Tuikov
2005-09-27 20:34 ` Jeff Garzik
2005-09-27 21:44 ` Luben Tuikov
2005-09-27 22:01 ` Jeff Garzik
2005-09-27 23:03 ` Luben Tuikov
2005-09-27 23:32 ` Andrew Patterson
2005-09-28 2:07 ` Jeff Garzik
2005-09-28 0:28 Moore, Eric Dean
2005-09-28 1:34 ` Andre Hedrick
2005-09-28 11:42 ` Luben Tuikov
2005-09-28 15:15 Moore, Eric Dean
2005-09-28 16:59 ` Luben Tuikov
2005-09-28 22:17 Moore, Eric Dean
2005-09-29 12:46 ` Luben Tuikov
2005-09-29 15:45 Moore, Eric Dean
2005-09-30 1:28 Martin Fouts
2005-09-30 17:07 Salyzyn, Mark
2005-09-30 17:53 ` Arjan van de Ven
2005-10-01 23:55 ` Alan Cox
2005-10-03 16:17 ` Luben Tuikov
2005-10-04 6:51 ` Andre Hedrick
2005-10-04 15:01 ` Luben Tuikov
2005-09-30 18:39 ` Andrew Patterson
2005-09-30 19:21 ` Luben Tuikov
2005-09-30 20:14 ` Andrew Patterson
2005-09-30 20:22 ` Matthew Wilcox
2005-09-30 21:44 ` Linus Torvalds
2005-10-01 17:46 ` Greg KH
2005-09-30 20:32 ` Luben Tuikov
2005-09-30 21:15 ` Andrew Patterson
2005-09-30 21:40 ` Joel Becker
2005-09-30 22:01 ` Luben Tuikov
2005-09-30 23:42 ` Marcin Dalecki
2005-10-03 13:54 ` Luben Tuikov
2005-10-03 16:29 ` Marcin Dalecki
2005-10-03 16:35 ` Andrew Patterson
2005-10-03 16:39 ` Luben Tuikov
2005-10-03 19:16 ` Marcin Dalecki
2005-10-03 21:26 ` Tomasz Kłoczko
2005-10-03 22:04 ` Ryan Anderson
2005-10-03 22:56 ` Linus Torvalds
2005-10-03 23:22 ` Al Viro
2005-10-04 13:55 ` Tomasz Kłoczko
2005-10-04 15:09 ` Linus Torvalds
2005-10-04 14:38 ` Luben Tuikov
2005-10-04 14:54 ` Jeff Garzik
2005-10-04 15:19 ` Luben Tuikov
2005-10-04 15:26 ` Jeff Garzik
2005-10-04 15:40 ` Luben Tuikov
2005-10-04 15:46 ` Matthew Wilcox
2005-10-04 6:30 ` Andre Hedrick
2005-10-01 0:02 ` Jeff Garzik
2005-10-01 0:01 ` Jeff Garzik
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