Date: Tue, 10 Mar 2009 18:02:17 +0200 From: Alexander Motin <mav@FreeBSD.org> To: hartzell@alerce.com Cc: freebsd-current@freebsd.org Subject: Re: Am I using atacontrol attach properly? (sata hotplug issue). Message-ID: <49B68F09.5060706@FreeBSD.org> In-Reply-To: <18870.36237.507772.507692@almost.alerce.com> References: <1236482586.00083946.1236470402@10.7.7.3> <49B4D781.4040009@FreeBSD.org> <18870.36237.507772.507692@almost.alerce.com>
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George Hartzell wrote: > Alexander Motin writes: > > George Hartzell wrote: > > > I have a Gigabyte GA-6KIEH-RH motherboard. It has 5 SATA ports, 4 > > > attached to a Sil 3114 controller and 1 attach to an ICH8m. The > > > system is running -CURRENT from yesterday. > > > > > > I have two disks attaching as ad4 and ad6 to ata2 and ata3 resp. > > > > > > I can set ACHI mode for ICH8m in the BIOS. When I do not enable it, > > > the 5th SATA conector shows up as slave on ata6. When I do enable it > > > the 5th connector shows up as master on ata8. > > > > > > If I boot without anything connected to the fifth port, then connect a > > > drive I thought that the following should work to get the drive > > > recognized: > > > > > > sudo atacontrol detach ata8 > > > sudo atacontrol attach ata8 > > > > > > (or a similar dance with ata6 if AHCI isn't enabled). > > > > It is ICH8M port, right? > > > > > When I set boot_verbose in loader.conf I see the following when I > > > attach (two separate attempts with different SATA drives): > > > > > > ata8: AHCI reset... > > > ata8: SATA connect status=00000004 > > > ata8: AHCI reset done: phy reset found no device > > > ata8: [MPSAFE] > > > ata8: [ITHREAD] > > > ata8: Identifying devices: 00000000 > > > ata8: New devices: 00000000 > > > ata8: AHCI reset... > > > ata8: SATA connect status=00000004 > > > ata8: AHCI reset done: phy reset found no device > > > ata8: [MPSAFE] > > > ata8: [ITHREAD] > > > ata8: Identifying devices: 00000000 > > > ata8: New devices: 00000000 > > > > There is very little part of AHCI driver takes part on this stage. > > Mostly it is done by common ata_sata_phy_reset() routine. Try to comment > > if ((ATA_IDX_INL(ch, ATA_SCONTROL) & ATA_SC_DET_MASK) == > > ATA_SC_DET_IDLE) > > return ata_sata_connect(ch); > > lines in there. It will force full hardware reset to the drive. > > > > > If the drive's attached at boot time then it's recognized. > > > > > > Am I doing something wrong, or is my hardware balky? > > > > Every hardware has some specifics. I have successfully tested hot-plug > > working with AHCI on ICH8, ICH8M and JMB363. > > When I comment out those lines I end up with an unbootable kernel. I > get to the point that it tries to mount root and it gives me a prompt > asking me what to mount. Have you saved any ata messages? > I don't know if it's the same problem or > not, but the USB keyboard is also unresponsive. I don't see direct relations. > Somehow, in the course of playing with this and rebooting when things > hung, I've ended up with several hundred errors in the zpool. It'll > take me a few evenings to reinstall and rebuild things. It's a pity. On my systems commenting this lines does not brake anything. -- Alexander Motin
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