linux-kernel - Re: PCI Quirk / Hidden Bus Report

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Date:	Mon, 30 Jul 2007 10:04:27 -0500
From:	Jeffrey Hundstad <jeffrey.hundstad@...u.edu>
To:	Adrian Bunk <bunk@...sta.de>
CC:	pat-lkml <pat-lkml@...ey.org>, Bernhard Kaindl <bk@...e.de>,
	linux-kernel@...r.kernel.org, gregkh@...e.de,
	linux-pci@...ey.karlin.mff.cuni.cz
Subject: Re: PCI Quirk / Hidden Bus Report

I also have the same type message in my dmesg from a Dell Latitude D820 
with the latest BIOS:

PCI: Probing PCI hardware (bus 00)
PCI quirk: region 1000-107f claimed by ICH6 ACPI/GPIO/TCO
PCI quirk: region 1080-10bf claimed by ICH6 GPIO
PCI: Transparent bridge - 0000:00:1e.0
PCI: Bus #04 (-#07) is hidden behind transparent bridge #03 (-#04) (try 
'pci=assign-busses')
Please report the result to linux-kernel to fix this permanently
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCIE._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.RP01._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.RP02._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PXP0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.RP04._PRT]
ACPI: PCI Interrupt Link [LNKA] (IRQs 9 10 *11)
ACPI: PCI Interrupt Link [LNKB] (IRQs 5 7) *4
ACPI: PCI Interrupt Link [LNKC] (IRQs 9 10 11) *3
ACPI: PCI Interrupt Link [LNKD] (IRQs 5 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 *9 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 9 *10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 *7 9 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 *5 6 7 9 10 11 12 14 15)
Linux Plug and Play Support v0.97 (c) Adam Belay

Full dmesg attached.

Adrian Bunk wrote:
> Bernhard?
>
> cu
> Adrian
>
>
> On Wed, Jul 18, 2007 at 11:33:55PM -0400, pat-lkml wrote:
>   
>> I received:
>>
>> PCI: Bus #0b (-#0e) is hidden behind transparent bridge #0a (-#0a) (try
>> 'pci=assign-busses')
>> Please report the result to linux-kernel to fix this permanently
>>
>> in my dmesg in 2.6.22, and am reporting it.  Context of message follows.
>>  Full dmesg output available on request.  This is a Clevo d900t laptop
>> motherboard, and everything works perfectly on it.
>>
>> Pat Erley
>>
>> --
>>
>> ENABLING IO-APIC IRQs
>> ..TIMER: vector=0x31 apic1=0 pin1=2 apic2=-1 pin2=-1
>> checking TSC synchronization [CPU#0 -> CPU#1]: passed.
>> Brought up 2 CPUs
>> migration_cost=22
>> NET: Registered protocol family 16
>> EISA bus registered
>> ACPI: bus type pci registered
>> PCI: BIOS Bug: MCFG area at e0000000 is not E820-reserved
>> PCI: Not using MMCONFIG.
>> PCI: PCI BIOS revision 2.10 entry at 0xfd951, last bus=10
>> PCI: Using configuration type 1
>> Setting up standard PCI resources
>> ACPI: Interpreter enabled
>> ACPI: Using IOAPIC for interrupt routing
>> ACPI: PCI Root Bridge [PCI0] (0000:00)
>> PCI: Probing PCI hardware (bus 00)
>> PCI quirk: region 1000-107f claimed by ICH6 ACPI/GPIO/TCO
>> PCI quirk: region 1180-11bf claimed by ICH6 GPIO
>> PCI: Transparent bridge - 0000:00:1e.0
>> PCI: Bus #0b (-#0e) is hidden behind transparent bridge #0a (-#0a) (try
>> 'pci=assign-busses')
>> Please report the result to linux-kernel to fix this permanently
>> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
>> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PEG_._PRT]
>> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCIB._PRT]
>> ACPI: PCI Interrupt Link [LNKA] (IRQs 10) *11
>> ACPI: PCI Interrupt Link [LNKB] (IRQs 11) *10
>> ACPI: PCI Interrupt Link [LNKC] (IRQs 10) *5
>> ACPI: PCI Interrupt Link [LNKD] (IRQs 11) *10
>> ACPI: PCI Interrupt Link [LNKE] (IRQs *10)
>> ACPI: PCI Interrupt Link [LNKF] (IRQs *11)
>> ACPI: PCI Interrupt Link [LNKG] (IRQs 10) *0, disabled.
>> ACPI: PCI Interrupt Link [LNKH] (IRQs *11)
>> Linux Plug and Play Support v0.97 (c) Adam Belay
>> pnp: PnP ACPI init
>> ACPI: bus type pnp registered
>> pnp: PnP ACPI: found 12 devices
>> ACPI: ACPI bus type pnp unregistered
>> SCSI subsystem initialized
>> libata version 2.21 loaded.
>> PCI: Using ACPI for IRQ routing
>> PCI: If a device doesn't work, try "pci=routeirq".  If it helps, post a
>> report
>> Time: tsc clocksource has been installed.
>>     
> -
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