Frans Pop wrote:
> With pre-2.6.31 kernels I always had the following in dmesg:
> pci 0000:00:1d.0: BAR 4: can't allocate resource
> pci 0000:00:1d.1: BAR 4: can't allocate resource
> [...]
> pnp 00:08: io resource (0x10-0x1f) overlaps 0000:00:1d.0 BAR 4 (0x0-0x1f), disabling
> pnp 00:08: io resource (0x10-0x1f) overlaps 0000:00:1d.1 BAR 4 (0x0-0x1f), disabling
>
> I was very happy to see that for 2.6.31-rc2 those messages were gone.
The commit that resulted in the messages disappearing was:
commit a76117dfd687ec4be0a9a05214f3009cc5f73a42
Author: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
Date: Wed Jun 17 16:33:35 2009 -0400
x86: Use pci_claim_resource
> But with .31-rc5 they are back again, with added "address space collision":
> pci 0000:00:1d.0: BAR 4: address space collision on of device [0xcfe0-0xcfff]
> pci 0000:00:1d.0: BAR 4: can't allocate resource
> pci 0000:00:1d.1: BAR 4: address space collision on of device [0xcf80-0xcf9f]
> pci 0000:00:1d.1: BAR 4: can't allocate resource
> [...]
> pnp 00:08: io resource (0x10-0x1f) overlaps 0000:00:1d.0 BAR 4 (0x0-0x1f), disabling
> pnp 00:08: io resource (0x10-0x1f) overlaps 0000:00:1d.1 BAR 4 (0x0-0x1f), disabling
The commit that caused the messages to return is:
commit 79896cf42f6a96d7e14f2dc3473443d68d74031d
Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Sun Aug 2 14:04:19 2009 -0700
Make pci_claim_resource() use request_resource() rather than insert_resource()
The affected devices are the two USB UHCI controllers.
Cheers,
FJP
00:00.0 Host bridge: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02)
Subsystem: Toshiba America Info Systems Device 0001
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
Latency: 0
Region 0: Memory at <unassigned> (32-bit, prefetchable)
Capabilities: [40] Vendor Specific Information <?>
Kernel driver in use: agpgart-intel
Kernel modules: intel-agp
00:00.1 System peripheral: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02)
Subsystem: Toshiba America Info Systems Device 0001
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
00:00.3 System peripheral: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02)
Subsystem: Toshiba America Info Systems Device 0001
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
00:02.0 VGA compatible controller: Intel Corporation 82852/855GM Integrated Graphics Device (rev 02) (prog-if 00 [VGA controller])
Subsystem: Toshiba America Info Systems Device 0002
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 10
Region 0: Memory at d8000000 (32-bit, prefetchable) [size=128M]
Region 1: Memory at d0000000 (32-bit, non-prefetchable) [size=512K]
Region 2: I/O ports at eff8 [size=8]
Capabilities: [d0] Power Management version 1
Flags: PMEClk- DSI+ D1+ D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:02.1 Display controller: Intel Corporation 82852/855GM Integrated Graphics Device (rev 02)
Subsystem: Toshiba America Info Systems Device 0002
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Region 0: Memory at 20000000 (32-bit, prefetchable) [disabled] [size=128M]
Region 1: Memory at 2c000000 (32-bit, non-prefetchable) [disabled] [size=512K]
Capabilities: [d0] Power Management version 1
Flags: PMEClk- DSI+ D1+ D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 03) (prog-if 00 [UHCI])
Subsystem: Toshiba America Info Systems Device 0001
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 16
Region 4: I/O ports at 18c0 [size=32]
Kernel driver in use: uhci_hcd
Kernel modules: uhci-hcd
00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 03) (prog-if 00 [UHCI])
Subsystem: Toshiba America Info Systems Device 0001
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin B routed to IRQ 19
Region 4: I/O ports at 18e0 [size=32]
Kernel driver in use: uhci_hcd
Kernel modules: uhci-hcd
00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 03) (prog-if 20 [EHCI])
Subsystem: Toshiba America Info Systems Device 0001
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin D routed to IRQ 23
Region 0: Memory at 2c080000 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [58] Debug port: BAR=1 offset=0080
Kernel driver in use: ehci_hcd
Kernel modules: ehci-hcd
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 83) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR+ INTx-
Latency: 0
Bus: primary=00, secondary=01, subordinate=03, sec-latency=64
I/O behind bridge: 0000c000-0000cfff
Memory behind bridge: cff00000-cfffffff
Prefetchable memory behind bridge: 28000000-2bffffff
Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Kernel modules: shpchp
00:1f.0 ISA bridge: Intel Corporation 82801DBM (ICH4-M) LPC Interface Bridge (rev 03)
Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Kernel modules: iTCO_wdt, intel-rng
00:1f.1 IDE interface: Intel Corporation 82801DBM (ICH4-M) IDE Controller (rev 03) (prog-if 8a [Master SecP PriP])
Subsystem: Toshiba America Info Systems Device 0001
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 18
Region 0: I/O ports at 01f0 [size=8]
Region 1: I/O ports at 03f4 [size=1]
Region 2: I/O ports at 0170 [size=8]
Region 3: I/O ports at 0374 [size=1]
Region 4: I/O ports at bfa0 [size=16]
Region 5: Memory at 2c080400 (32-bit, non-prefetchable) [size=1K]
Kernel driver in use: PIIX_IDE
Kernel modules: piix, ata_piix
00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03)
Subsystem: Toshiba America Info Systems Device 0241
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin B routed to IRQ 255
Region 0: I/O ports at 1000 [disabled] [size=256]
Region 1: I/O ports at 1880 [disabled] [size=64]
Region 2: Memory at 2c080800 (32-bit, non-prefetchable) [disabled] [size=512]
Region 3: Memory at 2c080a00 (32-bit, non-prefetchable) [disabled] [size=256]
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:1f.6 Modem: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Modem Controller (rev 03) (prog-if 00 [Generic])
Subsystem: Toshiba America Info Systems Device 0001
Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin B routed to IRQ 17
Region 0: I/O ports at 1400 [size=256]
Region 1: I/O ports at 1800 [size=128]
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
01:08.0 Ethernet controller: Intel Corporation 82801DB PRO/100 VE (MOB) Ethernet Controller (rev 83)
Subsystem: Toshiba America Info Systems Device 0001
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 64 (2000ns min, 14000ns max), Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 20
Region 0: Memory at cffff000 (32-bit, non-prefetchable) [size=4K]
Region 1: I/O ports at cf40 [size=64]
Capabilities: [dc] Power Management version 2
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=2 PME-
Kernel driver in use: e100
01:0b.0 CardBus bridge: Toshiba America Info Systems ToPIC100 PCI to Cardbus Bridge with ZV Support (rev 33)
Subsystem: Toshiba America Info Systems Device 0001
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 168
Interrupt: pin A routed to IRQ 18
Region 0: Memory at cff00000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=01, secondary=02, subordinate=02, sec-latency=0
Memory window 0: 28000000-2bfff000 (prefetchable)
Memory window 1: 30000000-33fff000
I/O window 0: 0000c000-0000c0ff
I/O window 1: 0000c400-0000c4ff
BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt- PostWrite+
16-bit legacy interface ports at 0001
Kernel driver in use: yenta_cardbus
Kernel modules: yenta_socket
02:00.0 Ethernet controller: Atheros Communications Inc. AR5212/AR5213 Multiprotocol MAC/baseband processor (rev 01)
Subsystem: Global Sun Technology Inc Device 7103
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 168 (2500ns min, 7000ns max), Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 18
Region 0: Memory at 30000000 (32-bit, non-prefetchable) [size=64K]
Capabilities: [44] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=2 PME-
Kernel driver in use: ath5k
Kernel modules: ath5k
