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SubjectRE: PCI BAR mem resource allocation "regression"
>>-----Original Message-----
>>From: Chiang, Alexander
>>
>>> Also, is it just the error message, or does it actually affect
>>> functionality?
>>
>>Hm, that is a good question. ;) The particular device I was testing
>>with was an infiniband device, and I have never actually pushed any
>>traffic over it; just used it to reproduce the error.
>>
>>I can try and hook the card up to something and push traffic over it,
>>but that will have to wait until Monday. Maybe Justin (cc'ed) knows,
>>since he was the one who first reported this to me.
>

More information of the error:

I tried it on a LAN and infiniband cards. After the hotplug, the device is not registered anymore. Below is an example on the lan card (eth4, 002b:01:00.0, slot 1306):

# ls /sys/class/net
eth0 eth10 eth12 eth3 eth5 eth7 eth9 ib1 ib3
eth1 eth11 eth2 eth4 eth6 eth8 ib0 ib2 lo
# cat /sys/class/net/eth4/device/uevent
DRIVER=e1000
PCI_CLASS=20000
PCI_ID=8086:105F
PCI_SUBSYS_ID=103C:704F
PCI_SLOT_NAME=002b:01:00.0
MODALIAS=pci:v00008086d0000105Fsv0000103Csd0000704Fbc02sc00i00
# cat /sys/bus/pci/slots/1306/address
002b:01:00
# echo 0 > /sys/bus/pci/slots/1306/power
# ls /sys/class/net
eth0 eth10 eth12 eth3 eth7 eth9 ib1 ib3
eth1 eth11 eth2 eth6 eth8 ib0 ib2 lo
# echo 1 > /sys/bus/pci/slots/1306/power
PCI: Failed to allocate mem resource #0:20000@f727ee00000 for 002b:01:00.0
PCI: Failed to allocate mem resource #1:20000@f727ee00000 for 002b:01:00.0
PCI: Failed to allocate mem resource #6:20000@f727ee00000 for 002b:01:00.0
PCI: Failed to allocate mem resource #0:20000@f727ee00000 for 002b:01:00.1
PCI: Failed to allocate mem resource #1:20000@f727ee00000 for 002b:01:00.1
PCI: Failed to allocate mem resource #6:20000@f727ee00000 for 002b:01:00.1
PCI: Failed to allocate I/O resource #2:20@10000 for 002b:01:00.0
PCI: Failed to allocate I/O resource #2:20@10000 for 002b:01:00.1
e1000: 002b:01:00.0: e1000_probe: The EEPROM Checksum Is Not Valid
e1000: 002b:01:00.1: e1000_probe: The EEPROM Checksum Is Not Valid
# ls /sys/class/net
eth0 eth10 eth12 eth3 eth7 eth9 ib1 ib3
eth1 eth11 eth2 eth6 eth8 ib0 ib2 lo
#

Justin


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