linux-kernel - Re: Intel X25E doesn't work with nv sata in current kernels

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Date:	Tue, 19 May 2009 15:57:05 +0900
From:	Tejun Heo <tj@...nel.org>
To:	david@...g.hm
CC:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Intel X25E doesn't work with nv sata in current kernels

david@...g.hm wrote:
> according to but 12703 ( http://bugzilla.kernel.org/show_bug.cgi?id=12703 )
> this worked with older kernels, but with 2.6.29.[13] and 2.6.30-rc6
> 
> according to this ticket it did work with older vendor kernels, but it's
> not clear which ones (and no older vanilla kernels)
> 
> I have verified that this drive does work on a PCI controller card in
> the same machine (with the same cables), so this is definantly a
> controller/kernel issue
> 
> booting with libata.force=#:nohrst (with # being the SATA controller
> that the SSD is on) does allow it to be detected, but the patch listed
> in the ticket
> 
> diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
> index 6cda12b..6673b1d 100644
> --- a/drivers/ata/sata_nv.c
> +++ b/drivers/ata/sata_nv.c
> @@ -1565,7 +1565,7 @@ static int nv_noclassify_hardreset(struct ata_link
> *link, unsigned int *class,
>         bool online;
>         int rc;
> 
> -       rc = sata_link_hardreset(link, sata_deb_timing_hotplug, deadline,
> +       rc = sata_link_hardreset(link, sata_deb_timing_long, deadline,
>                                  &online, NULL);
>         return online ? -EAGAIN : rc;
>  }
> 
> does not work.
> 
> Tejun Heo was working on this back in April, but it looks like the
> troubleshooting petered out.
> 
> one issue that I did notice, in the dmesg I see
> 
> $ grep SATA dmesg
> ata1: SATA max UDMA/133 cmd 0xd480 ctl 0xd400 bmdma 0xcc00 irq 11
> ata2: SATA max UDMA/133 cmd 0xd080 ctl 0xd000 bmdma 0xcc08 irq 11
> ata1: SATA link down (SStatus 100 SControl 300)
> ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> ata3: SATA max UDMA/133 cmd 0xc880 ctl 0xc800 bmdma 0xc080 irq 5
> ata4: SATA max UDMA/133 cmd 0xc480 ctl 0xc400 bmdma 0xc088 irq 5
> ata3: SATA link down (SStatus 0 SControl 300)
> ata4: SATA link down (SStatus 0 SControl 300)
> ata5: SATA max UDMA/133 cmd 0xc000 ctl 0xbc00 bmdma 0xb480 irq 10
> ata6: SATA max UDMA/133 cmd 0xb880 ctl 0xb800 bmdma 0xb488 irq 10
> ata5: SATA link down (SStatus 0 SControl 300)
> ata6: SATA link down (SStatus 0 SControl 300)
> 
> note the ata1 line. it detects something different than the links where
> there really is nothing plugged in, but it doesn't come up
> 
> booting with nohrst results in SStatus 123

Great, a new tester.  :-)

Let's track it on the bz.

Thanks.

-- 
tejun
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