linux-kernel - Re: [GIT PULL] isci merge candidate

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Date:	Fri, 13 May 2011 17:46:10 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Dan Williams <dan.j.williams@...el.com>,
	James.Bottomley@...senpartnership.com,
	Christoph Hellwig <hch@....de>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-scsi <linux-scsi@...r.kernel.org>,
	Dave Jiang <dave.jiang@...el.com>,
	David Milburn <dmilburn@...hat.com>,
	Ed Ciechanowski <ed.ciechanowski@...el.com>,
	Ed Nadolski <edmund.nadolski@...el.com>,
	Jacek Danecki <jacek.danecki@...el.com>,
	Jeff Skirvin <jeffrey.d.skirvin@...el.com>
Subject: Re: [GIT PULL] isci merge candidate

On 05/13/2011 04:34 PM, Linus Torvalds wrote:
> What's the likely user base of this?

Pretty big, I imagine.

> Why is it a SCSI driver rather
> than SATA?

It's "server" SAS hardware, a la mvsas driver.  SAS hardware is that 
"lovely" superset of SATA + SCSI, where SATA is one of several frame 
formats the device may speak.  So it is definitely a SCSI driver, that 
hooks into SATA processing via ata_sas_* hooks and functions.

> Why is it so f&*%ing big?

1. Because it's a SAS driver :)

2. Because it used to be an ugly vendor driver, now in the process of 
being cleaned up, rather than a nice, clean from-scratch Linux driver.

So it's a bit of a tough call.  It still needs more hammering and 
cleaning, but if this is what winds up on all Intel "server" boards that 
makes it pretty important.

	Jeff

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