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SubjectRe: d63e2e1f3df breaks sparc/T5-8
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On Sun, Mar 29, 2015 at 7:47 AM, David Ahern <david.ahern@oracle.com> wrote:
> On 3/28/15 2:24 PM, Yinghai Lu wrote:
>>
>> Can you append "ofpci_debug=1" in boot command line?
>
>
> here you go.


[ 286.647560] PCI: scan_bus[/pci@300/pci@1/pci@0/pci@6] bus no 8
[ 286.921232] PCI: Claiming 0000:00:01.0: Resource 15:
0000800100000000..00008004afffffff [220c]
[ 287.229190] PCI: Claiming 0000:01:00.0: Resource 15:
0000800100000000..00008004afffffff [220c]
[ 287.533428] PCI: Claiming 0000:02:04.0: Resource 15:
0000800100000000..000080012fffffff [220c]
[ 288.149831] PCI: Claiming 0000:03:00.0: Resource 15:
0000800100000000..000080012fffffff [220c]
[ 288.252466] PCI: Claiming 0000:04:06.0: Resource 14:
0000800100000000..000080010fffffff [220c]
[ 288.867196] PCI: Claiming 0000:05:00.0: Resource 0:
0000800100000000..0000800100001fff [204]
[ 288.968221] pci 0000:05:00.0: can't claim BAR 0 [mem
0x800100000000-0x800100001fff]: no compatible bridge window

the bridge resource has IORESOURCE_PREFETCH, but the device doesn't have that.

So pci_claim_resource can not find parent resource for device
resource: we can not
put non pref mem under pref mem.

Can you send out result from ?
lspci -vvxxx -s 0000:05:00.0

If it does have pref, could be of device layer does not pass the pref
flag properly
via pci_parse_of_addrs/of_get_property(node, "assigned-addresses".

or the addr0 from "ranges" and "assigned-address" has different definition.

Thanks

Yinghai


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