Date: Tue, 30 Dec 2008 10:14:24 -0800 From: David Ehrmann <ehrmann@gmail.com> To: "Bruce M. Simpson" <bms@FreeBSD.org> Cc: "Andrey V. Elsukov" <bu7cher@yandex.ru>, freebsd-stable@freebsd.org, =?ISO-8859-1?Q?S=F8ren_Schmidt?= <sos@FreeBSD.org> Subject: Re: SATA hotplug and AHCI Message-ID: <495A6500.9050403@gmail.com> In-Reply-To: <495A4E52.70804@FreeBSD.org> References: <49582FB2.8030300@gmail.com> <4958652B.80101@gmail.com> <49588FF7.2020702@yandex.ru> <49596A3D.1060003@gmail.com> <4959B579.1000407@yandex.ru> <495A4E52.70804@FreeBSD.org>
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Bruce M. Simpson wrote: > Andrey V. Elsukov wrote: >> ... >> Linux's libata driver has a quirk for VIA AHCI: >> >> /* vt8251 doesn't clear BSY on signature FIS reception, >> * request follow-up softreset. >> */ >> >> If i right understand it issues softreset for VIA controllers just >> after hardreset. And after softreset it is trying to read device >> signature. >> >> FreeBSD CURRENT has similar code, but it is disabled by default. >> You can try install CURRENT and rebuild ata_ahci driver with AHCI_PM >> option. >> May be it will help.. >> > > I'm glad this came up. When I asked a few weeks ago about SATA Hotplug > support, I was asking because of a board with a VIA SATA controller I > was planning to add drives too, on a JBOD basis. > > Perhaps this hack can be backported to 7.x to actually make VIA > controllers useful? I'm *probably* going to wait for the next release and hope they enable the fix. Having to run atacontrol attach/detach is a little annoying, but it seems to work, so for now, I might just say that's good enough. > > P.S. VIA's SATA RAID BIOS is a pile of poop, don't bother using VIA > for RAID. I'd say the entire BIOS is. I had problems getting it to detect boot devices for the F11 boot menu. The were more or less resolved after rebooting (so the hardware was no longer new), but still...
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