linux-kernel - Re: Implementing NVMHCI...

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Message-ID: <20090411203246.513a0892@lxorguk.ukuu.org.uk>
Date:	Sat, 11 Apr 2009 20:32:46 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Linux IDE mailing list <linux-ide@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	Arjan van de Ven <arjan@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: Implementing NVMHCI...

> 	  The spec describes the sector size as
> 	  "512, 1k, 2k, 4k, 8k, etc."   It will be interesting to reach
> 	  "etc" territory.

Over 4K will be fun.

> - ahci.c becomes a tiny stub with a pci_device_id match table,
>    calling functions in libahci.c.

It needs to a be a little bit bigger because of the folks wanting to do
non PCI AHCI, so you need a little bit of PCI wrapping etc

>    With a brand new command set, might as well avoid SCSI completely IMO,
>    and create a brand new block device.

Providing we allow for the (inevitable ;)) joys of NVHCI over SAS etc 8)


Alan
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