I am also having problems with PCI-E device LSI 1064E on 2.6.24-rc6
kernel. This is running on 8641D processor.
I can see the device, access the config space, but seems access from
device to memory is not working. Same device (same exact hardware) works
fine for 2.6.15 kernel.
- Siva
-----Original Message-----
Date: Wed, 25 Jun 2008 10:30:35 -0500
From: Kumar Gala <[EMAIL PROTECTED]>
Subject: Re: Migrating from 2.6.11 to 2.6.23 breaks pci-e with LSI
1068 SAS chip
To: Vince Asbridge <[EMAIL PROTECTED]>
Cc: linuxppc-embedded@ozlabs.org
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=WINDOWS-1252; format=flowed;
delsp=yes
On Jun 24, 2008, at 10:51 AM, Vince Asbridge wrote:
> All,
>
> I'm new to this mailing list, but have not had any luck finding
> information on this issue.
>
> Please be kind if I break the forum rules on my first post.
>
> We recently tried to upgrade our Freescale CDS 8548 look-alike
> module (code name ATCA1000) from the 2.6.11 based BSP to the 2.6.23
> based BSP.
>
> The upgrade went fairly smoothly, until we tried using SOME pci-e
> devices (some work fine, some don't show up to lspci).
>
> LSI pci-e controllers no longer show up at all!
>
> We see the ixgbe (intel 10G), SiliconImage SATA controller but do
> not see LSI devices (Specifically 1068 SAS, FC949-E fibrechannel).
>
> We're guessing it's a resource issue behind the bridge, because the
> LSI devices try to allocate 1 - 3M behind the bridge, but we can't
> find the bug, or where we would debug such an issue.
>
> The devices seem to "train" correctly, because we have an LED on the
> pci-e switch (PLX 8 port pci-e switch), and it's ON indicating pci-e
> link between the bridge and the 1068 device).
>
> We're totally at a loss as to why this always worked on the 2.6.11
> kernel but doesn?t work on 2.6.23.
>
> Using lspci, the LSI adapters do not show up in the list at all, as
> though they are not plugged into the system.
>
> Is there something that needs to be done with respect to PCI-E
> devices that is new in the 2.6.23 based BSP that did not need to be
> done in the 2.6.11 based kit? For example, are pci resources
> allocated by a different piece of code, that may have some issue
> allocating resources for the LSI adapters?
>
>
>
Can you tree 2.6.25? There are some fixes in that kernel related to
PCIe support:
[POWERPC] FSL: Rework PCI/PCIe support for 85xx/86xx
However, its odd that lspci doesn't even show the device. Are you
using u-boot? if so what version? and does u-boot see the LSI?
- k
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