Fw: PCI resource conflicts

[John Manby]

Hello again,

Just to clear up a few things. I have been informed that I was mistaken on a
couple of the configuration items below. The kernel is not Debian - that's
the development system.
The kernel is 2.4.22 w/ linuxppc-2.4.22 & rtai-24.1.12 patch files applied.
Some cleanup done to clear build errors.
Compiler is HardHat-2.95.3

Thanks again!!
-John

----- Original Message -----
From: "John Manby" <jmanby at tnex.com>
To: <linuxppc-embedded at lists.linuxppc.org>
Sent: Wednesday, January 21, 2004 10:39 AM
Subject: PCI resource conflicts


>
> Hello,
>
> I looked into the archives and found where several others have asked this
> question, but I couldn't find where anyone had received a sufficient
> solution. I am running a Debian 2.4 kernel with RTAI extensions on an IBM
> 405GP PowerPC. Initially, U-boot was failing to locate PCI devices behind
> bridges other than the first bridge it finds. I believe that this is not
an
> issue at this time and that the Linux kernel reconfigures the PCI bus on
> boot up. Now when booting Linux, I receive these messages when I plug
>
> multiple PCI cards into the chassis.
>
> PCI: Probing PCI hardware
> Scanning bus 00
> Found 00:80 [1011/0024] 000604 01
> Found 00:98 [1011/0024] 000604 01
> Fixups for bus 00
> Scanning behind PCI bridge 00:10.0, config 010100, pass 0
> Scanning bus 01
> Found 01:00 [8086/b555] 000b40 00
> Fixups for bus 01
> Bus scan for 01 returning with max=01
> Scanning behind PCI bridge 00:13.0, config 020200, pass 0
> Scanning bus 02
> Found 02:00 [104c/a106] 000000 00
> Fixups for bus 02
> Bus scan for 02 returning with max=02
> Scanning behind PCI bridge 00:10.0, config 010100, pass 1
> Scanning behind PCI bridge 00:13.0, config 020200, pass 1
> Bus scan for 00 returning with max=02
> PCI: Cannot allocate resource region 2 of PCI bridge 1
> PCI: bridge 1 resource 2 moved to bff00000..bfffffff
> PCI: Cannot allocate resource region 1 of PCI bridge 2
> PCI: bridge 2 resource 1 moved to bf000000..bfefffff
> PCI: Cannot allocate resource region 2 of PCI bridge 2
> PCI: bridge 2 resource 2 moved to bef00000..beffffff
> PCI: Cannot allocate resource region 0 of device 01:00.0
> PCI: Cannot allocate resource region 1 of device 01:00.0
> PCI: Cannot allocate resource region 0 of device 02:00.0
> PCI: Cannot allocate resource region 1 of device 02:00.0
> PCI: Failed to allocate resource 0(0-fff) for 01:00.0
> PCI: moved device 01:00.0 resource 1 (101) to f000
> PCI: Failed to allocate resource 3(c0000000-bfffffff) for 01:00.0
> PCI: Failed to allocate resource 4(0-7fffff) for 01:00.0
>
>
> Can anybody explain what is causing this or point me in the right
direction?
> I'm currently trying to follow through the PCI code, but I am new to Linux
> and a hierachical PCI design so it is slow going.
>
> Thanks!!
> -John
>
>
>
>
>


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