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From: Len Brown <len.brown@intel.com>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: "Bill Rugolsky Jr." <brugolsky@telemetry-investments.com>,
	linux-kernel@vger.kernel.org
Subject: Re: libata: 2.6.7-bk6,12 hang with ata_piix in combined mode; -bk5 ok
Date: 05 Jul 2004 16:39:42 -0400	[thread overview]
Message-ID: <1089059982.15671.86.camel@dhcppc4> (raw)
In-Reply-To: <A6974D8E5F98D511BB910002A50A6647615FF44B@hdsmsx403.hd.intel.com>

On Tue, 2004-06-29 at 21:20, Jeff Garzik wrote:
> On Tue, Jun 29, 2004 at 08:54:20PM -0400, Bill Rugolsky Jr. wrote:
> > ata_piix: combined mode detected
> > ACPI: PCI interrupt 0000:1f.2[A]: no GSI
> [...]
> >  sda:<3>ata1: command 0x25 timeout, stat 0xd0 host_stat 0x64
> 
> 
> I wonder what "no GSI" is.

It means that the ACPI PCI Routing Table (_PRT)
did not have an entry for this PCI device.

This is very common for IDE, which
can't decide if it is a real PCI device
or a legacy device; and the driver
is hard-coded to IRQ14, 15 anyway.

Linux is actually sort of exposed
WRT motherboard devices, because
while Linux/ACPI finds the PCI
resources, it doesn't look for
the legacy resource, which
is where on this board IDE lives.

-Len




       reply	other threads:[~2004-07-05 20:41 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <A6974D8E5F98D511BB910002A50A6647615FF44B@hdsmsx403.hd.intel.com>
2004-07-05 20:39 ` Len Brown [this message]
2004-06-30  0:54 libata: 2.6.7-bk6,12 hang with ata_piix in combined mode; -bk5 ok Bill Rugolsky Jr.
2004-06-30  1:20 ` Jeff Garzik
2004-06-30 15:56   ` Bill Rugolsky Jr.
2004-06-30 18:02     ` Jeff Garzik
2004-07-04 18:03 ` Jeff Garzik
2004-07-05  1:34   ` Bill Rugolsky Jr.

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