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From: Yinghai Lu <yinghai@kernel.org>
To: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>,
	Graham Ramsey <ramsey.graham@ntlworld.com>,
	linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
	bugzilla-daemon@bugzilla.kernel.org,
	Myron Stowe <myron.stowe@hp.com>,
	Robert Richter <robert.richter@amd.com>,
	Harald Welte <HaraldWelte@viatech.com>,
	Joseph Chan <JosephChan@via.com.tw>
Subject: Re: [Bug 16007] x86/pci Oops with CONFIG_SND_HDA_INTEL
Date: Fri, 11 Jun 2010 15:08:28 -0700	[thread overview]
Message-ID: <AANLkTilsQJLv57Uja59C07pq1tZ9RtD03WX-jLhfvUiA@mail.gmail.com> (raw)
In-Reply-To: <201006111549.05164.bjorn.helgaas@hp.com>

On Fri, Jun 11, 2010 at 2:49 PM, Bjorn Helgaas <bjorn.helgaas@hp.com> wrote:
> [If you haven't been following this bug, the report is at [3].]
>
> Here's a theory.  I'm not an expert in HyperTransport, so maybe somebody
> who knows HyperTransport and/or VIA chipsets can validate or refute it.
>
> This is based on the _HyperTransport I/O Link Specification_, rev 3.10b [1],
> and the _BIOS and Kernel Developer's Guide (BKDG) for AMD Family 10h
> Processors_ [2].
>
> In a nutshell, I think the problem is that amd_bus.c treats a
> HyperTransport (HT) host bridge as though it were a PCI host bridge.  In
> particular, when an HT chain contains more than one PCI host bridge, the
> HT host bridge apertures encompass all the PCI host bridges, but
> amd_bus.c mistakenly assigns all those resources to one PCI host bridge.

I don't think so. that system only have one HT chain.

May 19 23:20:33 ocham kernel: pci 0000:00:18.1 config space:
May 19 23:20:33 ocham kernel: 00: 22 10 01 11 00 00 00 00 00 00 00 06
00 00 80 00
May 19 23:20:33 ocham kernel: 10: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: 20: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: 30: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: 40: 03 00 00 00 00 00 7f 00 00 00 00 00
01 00 00 00
May 19 23:20:33 ocham kernel: 50: 00 00 00 00 02 00 00 00 00 00 00 00
03 00 00 00
May 19 23:20:33 ocham kernel: 60: 00 00 00 00 04 00 00 00 00 00 00 00
05 00 00 00
May 19 23:20:33 ocham kernel: 70: 00 00 00 00 06 00 00 00 00 00 00 00
07 00 00 00
May 19 23:20:33 ocham kernel: 80: 03 00 e0 00 80 ff ef 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: 90: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: a0: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: b0: 03 0a 00 00 00 0b 00 00 03 00 80 00
00 ff ff 00
May 19 23:20:33 ocham kernel: c0: 13 10 00 00 00 f0 ff 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: d0: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: e0: 03 00 00 ff 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: f0: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00

the (0xe4) =  ff 00 00 03

mean it will route pci operation all to node0 link0.

that chip from VIA has some design problem that will produce one orphan device.

May 19 23:20:33 ocham kernel: pci 0000:80:01.0 config space:
May 19 23:20:33 ocham kernel: 00: 06 11 88 32 06 00 10 00 10 00 03 04
10 00 00 00
May 19 23:20:33 ocham kernel: 10: 04 c0 bf fe 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: 20: 00 00 00 00 00 00 00 00 00 00 00 00
49 18 88 08
May 19 23:20:33 ocham kernel: 30: 00 00 00 00 50 00 00 00 00 00 00 00
0b 01 00 00
May 19 23:20:33 ocham kernel: 40: 00 30 00 00 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: 50: 01 60 42 c8 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: 60: 05 70 80 00 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: 70: 10 00 91 00 00 00 00 00 00 00 30 00
00 00 00 00
May 19 23:20:33 ocham kernel: 80: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: 90: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: a0: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: b0: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: c0: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: d0: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: e0: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
May 19 23:20:33 ocham kernel: f0: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00

YH

  reply	other threads:[~2010-06-11 22:08 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-19 15:13 x86/pci Oops with CONFIG_SND_HDA_INTEL Graham Ramsey
2010-05-19 16:44 ` Bjorn Helgaas
2010-05-19 17:16   ` Graham Ramsey
2010-05-19 18:01     ` Yinghai
2010-05-19 22:47       ` Graham Ramsey
2010-05-20  0:03         ` Yinghai
2010-05-20  0:22           ` Jesse Barnes
2010-05-20  0:36             ` Yinghai
2010-05-20 17:08               ` [Bug 16007] " Bjorn Helgaas
2010-06-02 16:58                 ` Bjorn Helgaas
2010-06-11 21:49                   ` Bjorn Helgaas
2010-06-11 22:08                     ` Yinghai Lu [this message]
2010-06-11 23:06                     ` Yinghai Lu
2010-06-14 14:18                       ` Bjorn Helgaas
2010-06-14 17:47                       ` [PATCH -v2] x86, pci: Handle fallout pci devices with peer root bus Yinghai Lu
2010-06-14 18:14                         ` Jesse Barnes
2010-06-14 18:22                           ` Yinghai Lu
2010-06-14 18:34                         ` Bjorn Helgaas
2010-06-14 18:39                           ` H. Peter Anvin
2010-06-14 18:55                             ` Yinghai Lu
2010-06-14 20:00                               ` Bjorn Helgaas
2010-06-14 20:08                                 ` H. Peter Anvin
2010-06-14 20:20                                   ` Bjorn Helgaas
2010-06-14 21:10                                     ` H. Peter Anvin
2010-06-15  1:49                                       ` Bjorn Helgaas
2010-06-15  1:56                                         ` H. Peter Anvin
2010-06-15 15:30                                           ` Bjorn Helgaas
2010-06-14 19:43                             ` Bjorn Helgaas
2010-06-21 17:28                       ` [Bug 16007] x86/pci Oops with CONFIG_SND_HDA_INTEL Bjorn Helgaas
2010-06-13 14:45 2.6.35-rc3: Reported regressions 2.6.33 -> 2.6.34 Rafael J. Wysocki
2010-06-13 14:49 ` [Bug #16007] x86/pci Oops with CONFIG_SND_HDA_INTEL Rafael J. Wysocki
2010-06-13 14:49   ` Rafael J. Wysocki
2010-06-20 22:32 2.6.35-rc3: Reported regressions 2.6.33 -> 2.6.34 Rafael J. Wysocki
2010-06-20 22:34 ` [Bug #16007] x86/pci Oops with CONFIG_SND_HDA_INTEL Rafael J. Wysocki
2010-07-10  0:24 2.6.35-rc4-git4: Reported regressions 2.6.33 -> 2.6.34 Rafael J. Wysocki
2010-07-10  0:33 ` [Bug #16007] x86/pci Oops with CONFIG_SND_HDA_INTEL Rafael J. Wysocki
2010-07-23 12:11 2.6.35-rc6: Reported regressions 2.6.33 -> 2.6.34 Rafael J. Wysocki
2010-07-23 12:15 ` [Bug #16007] x86/pci Oops with CONFIG_SND_HDA_INTEL Rafael J. Wysocki
2010-07-23 12:15   ` Rafael J. Wysocki
2010-07-23 14:20   ` Bjorn Helgaas
2010-07-23 19:51     ` Rafael J. Wysocki
2010-08-01 14:27 2.6.35-rc6-git6: Reported regressions 2.6.33 -> 2.6.34 Rafael J. Wysocki
2010-08-01 14:44 ` [Bug #16007] x86/pci Oops with CONFIG_SND_HDA_INTEL Rafael J. Wysocki

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