From: Jeff Garzik <jeff@garzik.org>
To: infernix <infernix@infernix.net>
Cc: linux-ide@vger.kernel.org
Subject: Re: PATA port not detected when using AHCI on Intel 82801GB/GR/GH
Date: Fri, 22 Jan 2010 00:31:45 -0500 [thread overview]
Message-ID: <4B593841.2030900@garzik.org> (raw)
In-Reply-To: <4B591D61.8030003@infernix.net>
On 01/21/2010 10:37 PM, infernix wrote:
> Hi,
>
> I've got an Intel SS4200(-ESW) here which according to lspci has an
> Intel 82801GB/GR/GH controller. It has 4 sata ports + 1 pata port in
> which i have a 4GB IDE flash DOM. It also has a SIL 3132 for 2 external
> eSATA ports. There are no disks connected to any of the SATA ports.
>
> The bios allows for two modes:
>
> - Compatible mode, which makes the kernel use ata_piix. lspci shows that
> the chipset uses pci id 8086:27c0.
>
> - Enhanced mode (with sub options IDE, RAID or AHCI - using AHCI here),
> which of course makes the kernel use ahci. lspci shows the the chipset
> now uses pci id 8086:27c1.
>
> In compatible mode, the bios can be configured to make the pata
> controller the first and the sata controller the second controller under
> ata_piix. This works and I can boot off the IDE in the PATA DOM without
> issues. The DOM works fine under ata_piix as /dev/sda.
>
> The problem is with the Enhanced mode with the sub mode set to AHCI (or
> IDE for that matter, it didn't change anything). In Enhanced AHCI mode,
> the SATA ports are detected just fine, but the PATA port is not
> detected. As I'm using an IDE DOM as root device, I can't boot in AHCI
> mode.
>
> What's weird though is that if I enable the old IDE PIIX driver, the
> PATA port does get detected and the DOM shows up as /dev/hda. But
> performance is abysmal, and since this is now deprecated we should try
> to get the PATA port working while in Enhanced AHCI mode.
>
> Running in compatible mode is not an option because this allows me to
> chose PATA for controller 0 and SATA for controller 1, but as a
> consequence i lose 2 sata ports as can be seen in the dmesg output. Or I
> could set it to full SATA but then the PATA port is rendered useless.
What PCI device is the PATA port? Does the pata_marvell driver enable it?
Can you provide full lspci?
Jeff
next prev parent reply other threads:[~2010-01-22 5:31 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-22 3:37 PATA port not detected when using AHCI on Intel 82801GB/GR/GH infernix
2010-01-22 5:01 ` Robert Hancock
2010-01-22 12:57 ` infernix
2010-01-23 1:23 ` Robert Hancock
2010-01-23 2:29 ` infernix
2010-01-23 7:18 ` Robert Hancock
2010-01-23 13:14 ` infernix
2010-01-23 10:14 ` Alan Cox
2010-01-23 13:08 ` infernix
2010-01-23 13:38 ` Alan Cox
2010-01-23 14:13 ` infernix
2010-01-23 14:30 ` infernix
2010-02-12 23:30 ` infernix
2010-02-13 0:04 ` Alan Cox
2010-02-13 0:21 ` infernix
2010-01-22 5:31 ` Jeff Garzik [this message]
-- strict thread matches above, loose matches on Subject: below --
2010-02-05 2:17 Joe Ceklosky
2010-02-06 1:43 ` Robert Hancock
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