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Message #124901
[Bug 1426216] Comment bridged from LTC Bugzilla
------- Comment From miltonm@xxxxxxxxxx 2015-06-16 21:21 EDT-------
The PHB3 PCIe host bridge in Power8 does not support generating IO space transactions / cycles, so no IO window is assigned to the PCI bus and all IO space resources will be unassigned and must remain disabled in the pci command register. (Previous bridges in most PowerPC systems provided a memory mapped window that generates IO cycles but that function was not implemented in Power8.)
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https://bugs.launchpad.net/bugs/1426216
Title:
pci driver messages - BAR 13: no space for
Status in linux package in Ubuntu:
Confirmed
Bug description:
---Problem Description---
pci driver messages - BAR 13: no space for
---uname output---
3.18.0-12-generic
Machine Type = POWER8
---Steps to Reproduce---
Install Ubuntu 15.04 daily build running bare-metal
After the installation following messages are seen in dmesg.
Not sure if these indicate a problem. Can some one look at these and confirm if this is problem or can be ignored ?
Messages from dmesg log
[ 0.714476] pci_bus 0001:00: max bus depth: 3 pci_try_num: 4
[ 0.714519] pci 0001:04:00.0: reg 0x16c: [mem 0x00000000-0x0000ffff 64bit]
[ 0.714541] pci 0001:04:00.0: reg 0x174: [mem 0x00000000-0x0000ffff 64bit]
[ 0.714577] pci 0001:00:00.0: BAR 15: assigned [mem 0x3b1010000000-0x3b103fffffff 64bit pref]
[ 0.714579] pci 0001:00:00.0: BAR 14: assigned [mem 0x3fe080000000-0x3fe081ffffff]
[ 0.714581] pci 0001:00:00.0: BAR 13: no space for [io size 0x3000]
[ 0.714583] pci 0001:00:00.0: BAR 13: failed to assign [io size 0x3000]
[ 0.714586] pci 0001:01:00.0: BAR 15: assigned [mem 0x3b1010000000-0x3b103fffffff 64bit pref]
[ 0.714588] pci 0001:01:00.0: BAR 14: assigned [mem 0x3fe080000000-0x3fe0817fffff]
[ 0.714590] pci 0001:01:00.0: BAR 0: assigned [mem 0x3fe081800000-0x3fe08183ffff]
[ 0.714595] pci 0001:01:00.0: BAR 13: no space for [io size 0x3000]
[ 0.714597] pci 0001:01:00.0: BAR 13: failed to assign [io size 0x3000]
[ 0.714600] pci 0001:02:01.0: BAR 15: assigned [mem 0x3b1010000000-0x3b101fffffff 64bit pref]
[ 0.714602] pci 0001:02:08.0: BAR 15: assigned [mem 0x3b1020000000-0x3b102fffffff 64bit pref]
[ 0.714604] pci 0001:02:09.0: BAR 15: assigned [mem 0x3b1030000000-0x3b103fffffff 64bit pref]
[ 0.714606] pci 0001:02:01.0: BAR 14: assigned [mem 0x3fe080000000-0x3fe0807fffff]
[ 0.714608] pci 0001:02:08.0: BAR 14: assigned [mem 0x3fe080800000-0x3fe080ffffff]
[ 0.714609] pci 0001:02:09.0: BAR 14: assigned [mem 0x3fe081000000-0x3fe0817fffff]
[ 0.714611] pci 0001:02:01.0: BAR 13: no space for [io size 0x1000]
[ 0.714613] pci 0001:02:01.0: BAR 13: failed to assign [io size 0x1000]
[ 0.714614] pci 0001:02:08.0: BAR 13: no space for [io size 0x1000]
[ 0.714616] pci 0001:02:08.0: BAR 13: failed to assign [io size 0x1000]
[ 0.714618] pci 0001:02:09.0: BAR 13: no space for [io size 0x1000]
[ 0.714619] pci 0001:02:09.0: BAR 13: failed to assign [io size 0x1000]
[ 0.714622] pci 0001:03:00.0: BAR 6: assigned [mem 0x3fe080000000-0x3fe08003ffff pref]
[ 0.714624] pci 0001:03:00.1: BAR 6: assigned [mem 0x3fe080040000-0x3fe08007ffff pref]
[ 0.714627] pci 0001:03:00.0: BAR 2: assigned [mem 0x3fe080080000-0x3fe080083fff 64bit]
[ 0.714641] pci 0001:03:00.1: BAR 2: assigned [mem 0x3fe080084000-0x3fe080087fff 64bit]
[ 0.714656] pci 0001:03:00.0: BAR 0: assigned [mem 0x3fe080088000-0x3fe080088fff 64bit]
[ 0.714670] pci 0001:03:00.1: BAR 0: assigned [mem 0x3fe080089000-0x3fe080089fff 64bit]
[ 0.714685] pci 0001:03:00.0: BAR 4: no space for [io size 0x0100]
[ 0.714686] pci 0001:03:00.0: BAR 4: failed to assign [io size 0x0100]
[ 0.714688] pci 0001:03:00.1: BAR 4: no space for [io size 0x0100]
[ 0.714690] pci 0001:03:00.1: BAR 4: failed to assign [io size 0x0100]
[ 0.714691] pci 0001:02:01.0: PCI bridge to [bus 03]
# lspci
0000:00:00.0 PCI bridge: IBM Device 03dc
0001:00:00.0 PCI bridge: IBM Device 03dc
0001:01:00.0 PCI bridge: PLX Technology, Inc. PEX 8732 32-lane, 8-Port PCI Express Gen 3 (8.0 GT/s) Switch (rev ca)
0001:02:01.0 PCI bridge: PLX Technology, Inc. PEX 8732 32-lane, 8-Port PCI Express Gen 3 (8.0 GT/s) Switch (rev ca)
0001:02:08.0 PCI bridge: PLX Technology, Inc. PEX 8732 32-lane, 8-Port PCI Express Gen 3 (8.0 GT/s) Switch (rev ca)
0001:02:09.0 PCI bridge: PLX Technology, Inc. PEX 8732 32-lane, 8-Port PCI Express Gen 3 (8.0 GT/s) Switch (rev ca)
0001:03:00.0 Fibre Channel: Emulex Corporation Saturn-X: LightPulse Fibre Channel Host Adapter (rev 03)
0001:03:00.1 Fibre Channel: Emulex Corporation Saturn-X: LightPulse Fibre Channel Host Adapter (rev 03)
0001:04:00.0 RAID bus controller: IBM PCI-E IPR SAS Adapter (ASIC) (rev 01)
0002:00:00.0 PCI bridge: IBM Device 03dc
0003:00:00.0 PCI bridge: IBM Device 03dc
0003:01:00.0 PCI bridge: PLX Technology, Inc. Device 8748 (rev ca)
0003:02:01.0 PCI bridge: PLX Technology, Inc. Device 8748 (rev ca)
0003:02:08.0 PCI bridge: PLX Technology, Inc. Device 8748 (rev ca)
0003:02:09.0 PCI bridge: PLX Technology, Inc. Device 8748 (rev ca)
0003:02:10.0 PCI bridge: PLX Technology, Inc. Device 8748 (rev ca)
0003:02:11.0 PCI bridge: PLX Technology, Inc. Device 8748 (rev ca)
0003:03:00.0 USB controller: Texas Instruments TUSB73x0 SuperSpeed USB 3.0 xHCI Host Controller (rev 02)
0003:09:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
0003:09:00.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
0003:09:00.2 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
0003:09:00.3 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
0004:00:00.0 PCI bridge: IBM Device 03dc
0005:00:00.0 PCI bridge: IBM Device 03dc
0006:00:00.0 PCI bridge: IBM Device 03dc
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