Date: Tue, 23 Apr 2013 06:49:53 -0700 From: Jeremy Chadwick <jdc@koitsu.org> To: Tom Evans <tevans.uk@googlemail.com> Cc: freebsd-stable@freebsd.org Subject: Re: ada(4) and ahci(4) quirk printing Message-ID: <20130423134953.GA64010@icarus.home.lan> In-Reply-To: <CAFHbX1JPhfeZMv5t=jLr_2xHVz5XSrhq7Nipd-Qg7xfT%2Boo7nA@mail.gmail.com> References: <20130422051452.GA2148@icarus.home.lan> <51763BF9.2000506@FreeBSD.org> <20130423092602.GA58831@icarus.home.lan> <51765466.4040209@FreeBSD.org> <4D28DBAE46424C268AA22FCDD8657946@multiplay.co.uk> <20130423114722.GA61919@icarus.home.lan> <CC7BB743D5AB4312BB3A0FE37AC1C566@multiplay.co.uk> <20130423125144.GA62949@icarus.home.lan> <CAFHbX1JPhfeZMv5t=jLr_2xHVz5XSrhq7Nipd-Qg7xfT%2Boo7nA@mail.gmail.com>
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On Tue, Apr 23, 2013 at 02:15:31PM +0100, Tom Evans wrote: > On Tue, Apr 23, 2013 at 1:51 PM, Jeremy Chadwick <jdc@koitsu.org> wrote: > > On Tue, Apr 23, 2013 at 01:20:31PM +0100, Steven Hartland wrote: > >> >4) camcontrol wouldn't address the need/interest for ahci(4) quirks to > >> >be made available. > >> > >> Why? > > > > Because camcontrol is for CAM. ahci(4) is not part of CAM. The last > > place I'd look for "poking at AHCI" (as in *actual AHCI*) is camcontrol. > > > > This is one of the reasons sysctl exists -- it's a sort of "covers > > everything" tree, on a per-device basis. > > Just on this point, these quirks aren't actually quirks of ahci(4) are > they? They are quirks of the disks that are attached to ahci(4), and > presumably should apply regardless of whether the disk in question is > hooked up to ahci(4), siis(4) or even mps(4). There are two patches: one prints ada(4) (disk) quirks, the other prints ahci(4) (controller) quirks. These are two separate/unrelated things. > To my mind, this means the quirks should belong to da(4), or at the > very least ada(4). ada(4) and da(4) are both manipulated by CAM, so > having this in camcontrol seems logical to me. To clarify, my mind is > completely oblivious of how all this is implemented in software, so > perhaps my mind needs to be changed rather than the code! -- | Jeremy Chadwick jdc@koitsu.org | | UNIX Systems Administrator http://jdc.koitsu.org/ | | Mountain View, CA, US | | Making life hard for others since 1977. PGP 4BD6C0CB |
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