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Date: Sun, 14 Mar 2010 15:12:03 -0600 From: Bjorn Helgaas <bjorn.helgaas@...com> To: "Rafael J. Wysocki" <rjw@...k.pl> Cc: Giampaolo Bellini <iw2lsi@...il.com>, linux-kernel@...r.kernel.org, Linux PCI <linux-pci@...r.kernel.org> Subject: Re: PCI conflicts with latest kernels On Sun, 2010-03-14 at 21:12 +0100, Rafael J. Wysocki wrote: > [CCing linux-pci] > > On Sunday 14 March 2010, Giampaolo Bellini wrote: > > Hi all... > > > > I'm experimenting PCI address space collisions on an ICOP PC104 > > VDX-6357 motherboard (with no cards/expansion at all) and kernels > > 2.6.33/34 > > > > collisions where not there with kernel 2.6.29 (I start with this > > .config and I've done a make oldconfig for 2.6.33/34). > > > > I have no ACPI support and I'm using the sisfb framebuffer on a XGI > > Technology Inc. (eXtreme Graphics Innovation) Volari Z7 chipset. If you apply the patches here: http://lkml.org/lkml/2010/3/11/512 on 2.6.34-rc1, you'll get a little more information about the collisions. /proc/iomem may also be helpful. The messages have changed somewhat between 2.6.29 and the current kernel, but from the snippets you posted, I don't see any functional differences. Bjorn > > ------------------------------------------------------------------- > > cat /proc/cmdline > > ------------------------------------------------------------------- > > root=/dev/sda2 quiet video=sisfb:640x480-32 ar8.debug=1 > > ar8.outputs=0x80 BOOT_IMAGE=vmlinuz-2.6.33-r3-vdx > > > > > > ------------------------------------------------------------------- > > dmesg kernel 2.6.33: > > ------------------------------------------------------------------- > > Linux version 2.6.33-ibty3-vdx (root@...ble) (gcc version 4.2.4 > > (Ubuntu 4.2.4-1ubuntu3)) #22 Sun Mar 14 00:35:18 CET 2010 > > CPU: vendor_id 'Vortex86 SoC' unknown, using generic init. > > CPU: Your system may be unstable. > > BIOS-provided physical RAM map: > > BIOS-e820: 0000000000000000 - 000000000009fc00 (usable) > > BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved) > > BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved) > > BIOS-e820: 0000000000100000 - 0000000020000000 (usable) > > BIOS-e820: 00000000ff000000 - 0000000100000000 (reserved) > > Notice: NX (Execute Disable) protection missing in CPU or disabled in BIOS! > > DMI not present or invalid. > > last_pfn = 0x20000 max_arch_pfn = 0x100000 > > initial memory mapped : 0 - 01800000 > > init_memory_mapping: 0000000000000000-0000000020000000 > > 0000000000 - 0020000000 page 4k > > kernel direct mapping tables up to 20000000 @ 7000-8a000 > > 512MB LOWMEM available. > > mapped low ram: 0 - 20000000 > > low ram: 0 - 20000000 > > node 0 low ram: 00000000 - 20000000 > > node 0 bootmap 00001000 - 00005000 > > (6 early reservations) ==> bootmem [0000000000 - 0020000000] > > #0 [0000000000 - 0000001000] BIOS data page ==> [0000000000 - 0000001000] > > #1 [0001000000 - 00012f6154] TEXT DATA BSS ==> [0001000000 - 00012f6154] > > #2 [000009fc00 - 0000100000] BIOS reserved ==> [000009fc00 - 0000100000] > > #3 [00012f7000 - 00012fd000] BRK ==> [00012f7000 - 00012fd000] > > #4 [0000007000 - 0000081000] PGTABLE ==> [0000007000 - 0000081000] > > #5 [0000001000 - 0000005000] BOOTMAP ==> [0000001000 - 0000005000] > > Zone PFN ranges: > > DMA 0x00000000 -> 0x00001000 > > Normal 0x00001000 -> 0x00020000 > > Movable zone start PFN for each node > > early_node_map[2] active PFN ranges > > 0: 0x00000000 -> 0x0000009f > > 0: 0x00000100 -> 0x00020000 > > On node 0 totalpages: 130975 > > free_area_init_node: node 0, pgdat c12a2004, node_mem_map c12fd000 > > DMA zone: 32 pages used for memmap > > DMA zone: 0 pages reserved > > DMA zone: 3967 pages, LIFO batch:0 > > Normal zone: 992 pages used for memmap > > Normal zone: 125984 pages, LIFO batch:31 > > Allocating PCI resources starting at 20000000 (gap: 20000000:df000000) > > Built 1 zonelists in Zone order, mobility grouping on. Total pages: 129951 > > Kernel command line: root=/dev/sda2 quiet video=sisfb:640x480-32 > > ar8.debug=1 ar8.outputs=0x80 BOOT_IMAGE=vmlinuz-2.6.33-r3-vdx > > PID hash table entries: 2048 (order: 1, 8192 bytes) > > Dentry cache hash table entries: 65536 (order: 6, 262144 bytes) > > Inode-cache hash table entries: 32768 (order: 5, 131072 bytes) > > Initializing CPU#0 > > Memory: 515600k/524288k available (1844k kernel code, 8044k reserved, > > 863k data, 212k init, 0k highmem) > > virtual kernel memory layout: > > fixmap : 0xfffe5000 - 0xfffff000 ( 104 kB) > > vmalloc : 0xe0800000 - 0xfffe3000 ( 503 MB) > > lowmem : 0xc0000000 - 0xe0000000 ( 512 MB) > > .init : 0xc12a5000 - 0xc12da000 ( 212 kB) > > .data : 0xc11cd056 - 0xc12a4ed8 ( 863 kB) > > .text : 0xc1000000 - 0xc11cd056 (1844 kB) > > Checking if this processor honours the WP bit even in supervisor mode...Ok. > > Hierarchical RCU implementation. > > NR_IRQS:16 > > Console: colour VGA+ 80x25 > > console [tty0] enabled > > Fast TSC calibration using PIT > > Detected 800.001 MHz processor. > > Calibrating delay loop (skipped), value calculated using timer > > frequency.. 1600.00 BogoMIPS (lpj=3200004) > > Mount-cache hash table entries: 512 > > Performance Events: > > CPU: Vortex86 SoC 05/02 stepping 02 > > Checking 'hlt' instruction... OK. > > NET: Registered protocol family 16 > > PCI: PCI BIOS revision 3.00 entry at 0xf0031, last bus=0 > > PCI: Using configuration type 1 for base access > > bio: create slab <bio-0> at 0 > > vgaarb: loaded > > SCSI subsystem initialized > > libata version 3.00 loaded. > > usbcore: registered new interface driver usbfs > > usbcore: registered new interface driver hub > > usbcore: registered new device driver usb > > PCI: Probing PCI hardware > > PCI: Probing PCI hardware (bus 00) > > pci 0000:00:01.0: reg 10: [io 0xdc00-0xdcff] > > pci 0000:00:01.0: reg 14: [mem 0xfefbb000-0xfefbb0ff] > > pci 0000:00:01.0: supports D1 D2 > > pci 0000:00:01.0: PME# supported from D1 D2 D3hot D3cold > > pci 0000:00:01.0: PME# disabled > > pci 0000:00:02.0: reg 10: [io 0xdd00-0xddff] > > pci 0000:00:02.0: reg 14: [mem 0xfefbb400-0xfefbb4ff] > > pci 0000:00:02.0: supports D1 D2 > > pci 0000:00:02.0: PME# supported from D1 D2 D3hot D3cold > > pci 0000:00:02.0: PME# disabled > > pci 0000:00:03.0: reg 10: [mem 0xf8000000-0xfbffffff pref] > > pci 0000:00:03.0: reg 14: [mem 0xfefc0000-0xfeffffff] > > pci 0000:00:03.0: reg 18: [io 0xdf80-0xdfff] > > pci 0000:00:03.0: supports D1 D2 > > pci 0000:00:08.0: reg 10: [io 0xde00-0xdeff] > > pci 0000:00:08.0: reg 14: [mem 0xfefbb800-0xfefbb8ff] > > pci 0000:00:08.0: reg 30: [mem 0xfefa0000-0xfefaffff pref] > > pci 0000:00:0b.0: reg 10: [mem 0x000e0000-0x000e0fff] > > pci 0000:00:0b.1: reg 10: [mem 0x000e1000-0x000e10ff] > > pci 0000:00:0c.0: reg 10: [io 0x01f0-0x01f7] > > pci 0000:00:0c.0: reg 14: [io 0x03f4-0x03f7] > > pci 0000:00:0c.0: reg 18: [io 0x0170-0x0177] > > pci 0000:00:0c.0: reg 1c: [io 0x0374-0x0377] > > pci 0000:00:0c.0: reg 20: [io 0xfff0-0xffff] > > pci 0000:00:0c.0: reg 30: [mem 0x00000000-0x0001ffff pref] > > vgaarb: device added: PCI:0000:00:03.0,decodes=io+mem,owns=io+mem,locks=none > > pci 0000:00:07.0: default IRQ router [17f3:6031] > > PCI: pci_cache_line_size set to 32 bytes > > > > > > pci 0000:00:0b.0: address space collision: [mem 0x000e0000-0x000e0fff] > > already in use > > pci 0000:00:0b.0: can't reserve [mem 0x000e0000-0x000e0fff] > > pci 0000:00:0b.1: address space collision: [mem 0x000e1000-0x000e10ff] > > already in use > > pci 0000:00:0b.1: can't reserve [mem 0x000e1000-0x000e10ff] > > > > > > Switching to clocksource tsc > > pci 0000:00:0c.0: BAR 6: assigned [mem 0x20000000-0x2001ffff pref] > > pci 0000:00:0b.0: BAR 0: assigned [mem 0x20020000-0x20020fff] > > pci 0000:00:0b.0: BAR 0: set to [mem 0x20020000-0x20020fff] (PCI > > address [0x20020000-0x20020fff] > > pci 0000:00:0b.1: BAR 0: assigned [mem 0x20021000-0x200210ff] > > pci 0000:00:0b.1: BAR 0: set to [mem 0x20021000-0x200210ff] (PCI > > address [0x20021000-0x200210ff] > > pci_bus 0000:00: resource 0 [io 0x0000-0xffff] > > pci_bus 0000:00: resource 1 [mem 0x00000000-0xffffffff] > > ... > > ------------------------------------------------------------------- > > > > > > ------------------------------------------------------------------- > > lspci > > ------------------------------------------------------------------- > > 00:00.0 Host bridge: RDC Semiconductor, Inc. Unknown device 6021 (rev 01) > > Control: I/O- Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- > > ParErr- Stepping- SERR- FastB2B- > > Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium > > >TAbort- <TAbort- <MAbort+ >SERR- <PERR- > > Latency: 0 > > > > 00:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. > > RTL-8139/8139C/8139C+ (rev 10) > > Subsystem: Realtek Semiconductor Co., Ltd. RT8139 > > Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- > > ParErr- Stepping- SERR+ FastB2B- > > Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium > > >TAbort- <TAbort- <MAbort- >SERR- <PERR- > > Latency: 128 (8000ns min, 16000ns max) > > Interrupt: pin A routed to IRQ 9 > > Region 0: I/O ports at dc00 [size=256] > > Region 1: Memory at fefbb000 (32-bit, non-prefetchable) [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- > > > > 00:02.0 Ethernet controller: Realtek Semiconductor Co., Ltd. > > RTL-8139/8139C/8139C+ (rev 10) > > Subsystem: Realtek Semiconductor Co., Ltd. RT8139 > > Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- > > ParErr- Stepping- SERR+ FastB2B- > > Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium > > >TAbort- <TAbort- <MAbort- >SERR- <PERR- > > Latency: 128 (8000ns min, 16000ns max) > > Interrupt: pin A routed to IRQ 6 > > Region 0: I/O ports at dd00 [size=256] > > Region 1: Memory at fefbb400 (32-bit, non-prefetchable) [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- > > > > 00:03.0 VGA compatible controller: XGI Technology Inc. (eXtreme > > Graphics Innovation) Volari Z7 (prog-if 00 [VGA controller]) > > Subsystem: XGI Technology Inc. (eXtreme Graphics Innovation) Volari Z7 > > Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- > > ParErr- Stepping- SERR- FastB2B- > > Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium > > >TAbort- <TAbort- <MAbort- >SERR- <PERR- > > BIST result: 00 > > Region 0: Memory at f8000000 (32-bit, prefetchable) [size=64M] > > Region 1: Memory at fefc0000 (32-bit, non-prefetchable) [size=256K] > > Region 2: I/O ports at df80 [size=128] > > Capabilities: [40] Power Management version 2 > > Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA > > PME(D0-,D1-,D2-,D3hot-,D3cold-) > > Status: D0 PME-Enable- DSel=0 DScale=0 PME- > > > > 00:07.0 ISA bridge: RDC Semiconductor, Inc. Unknown device 6031 (rev 01) > > Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- > > ParErr- Stepping- SERR- FastB2B- > > Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=?? >TAbort- > > <TAbort- <MAbort- >SERR- <PERR- > > Latency: 0 > > > > 00:08.0 Ethernet controller: RDC Semiconductor, Inc. R6040 MAC Controller > > Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- > > ParErr- Stepping- SERR- FastB2B- > > Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium > > >TAbort- <TAbort- <MAbort- >SERR- <PERR- > > Latency: 128 (750ns min, 2000ns max) > > Interrupt: pin A routed to IRQ 5 > > Region 0: I/O ports at de00 [size=256] > > Region 1: Memory at fefbb800 (32-bit, non-prefetchable) [size=256] > > Expansion ROM at fefa0000 [disabled] [size=64K] > > > > 00:0b.0 USB Controller: RDC Semiconductor, Inc. R6060 USB 1.1 > > Controller (rev 11) (prog-if 10 [OHCI]) > > Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- > > ParErr- Stepping- SERR+ FastB2B- > > Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium > > >TAbort- <TAbort- <MAbort- >SERR- <PERR- > > Latency: 128, Cache Line Size: 16 bytes > > Interrupt: pin A routed to IRQ 15 > > Region 0: Memory at 20020000 (32-bit, non-prefetchable) [size=4K] > > > > 00:0b.1 USB Controller: RDC Semiconductor, Inc. R6061 USB 2.0 > > Controller (rev 02) (prog-if 20 [EHCI]) > > Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- > > ParErr- Stepping- SERR+ FastB2B- > > Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium > > >TAbort- <TAbort- <MAbort- >SERR- <PERR- > > Latency: 128, Cache Line Size: 16 bytes > > Interrupt: pin B routed to IRQ 9 > > Region 0: Memory at 20021000 (32-bit, non-prefetchable) [size=256] > > > > 00:0c.0 Mass storage controller: RDC Semiconductor, Inc. Unknown > > device 1010 (rev 13) > > Subsystem: RDC Semiconductor, Inc. Unknown device 1010 > > Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- > > ParErr- Stepping- SERR- FastB2B- > > Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium > > >TAbort- <TAbort- <MAbort- >SERR- <PERR- > > Latency: 64 (2000ns min, 2000ns max) > > Interrupt: pin A routed to IRQ 14 > > Region 0: I/O ports at 01f0 [size=8] > > Region 1: I/O ports at 03f4 [size=4] > > Region 2: I/O ports at 0170 [size=8] > > Region 3: I/O ports at 0374 [size=4] > > Region 4: I/O ports at fff0 [size=16] > > [virtual] Expansion ROM at 20000000 [disabled] [size=128K] > > Capabilities: [80] Power Management version 2 > > Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA > > PME(D0-,D1-,D2-,D3hot-,D3cold-) > > Status: D0 PME-Enable- DSel=0 DScale=0 PME- > > ------------------------------------------------------------------- > > > > ------------------------------------------------------------------- > > /proc/cpuinfo > > ------------------------------------------------------------------- > > processor : 0 > > vendor_id : Vortex86 SoC > > cpu family : 5 > > model : 2 > > model name : 05/02 > > stepping : 2 > > cpu MHz : 800.001 > > fdiv_bug : no > > hlt_bug : no > > f00f_bug : no > > coma_bug : no > > fpu : yes > > fpu_exception : yes > > cpuid level : 1 > > wp : yes > > flags : fpu tsc cx8 > > bogomips : 1600.00 > > clflush size : 32 > > cache_alignment : 32 > > address sizes : 32 bits physical, 32 bits virtual > > power management: > > > > > > ------------------------------------------------------------------- > > dmesg kernel 2.6.29: > > ------------------------------------------------------------------- > > ... > > PCI: Probing PCI hardware > > PCI: Probing PCI hardware (bus 00) > > pci 0000:00:01.0: reg 10 io port: [0xdc00-0xdcff] > > pci 0000:00:01.0: reg 14 32bit mmio: [0xfefbb000-0xfefbb0ff] > > pci 0000:00:01.0: supports D1 D2 > > pci 0000:00:01.0: PME# supported from D1 D2 D3hot D3cold > > pci 0000:00:01.0: PME# disabled > > pci 0000:00:02.0: reg 10 io port: [0xdd00-0xddff] > > pci 0000:00:02.0: reg 14 32bit mmio: [0xfefbb400-0xfefbb4ff] > > pci 0000:00:02.0: supports D1 D2 > > pci 0000:00:02.0: PME# supported from D1 D2 D3hot D3cold > > pci 0000:00:02.0: PME# disabled > > pci 0000:00:03.0: reg 10 32bit mmio: [0xf8000000-0xfbffffff] > > pci 0000:00:03.0: reg 14 32bit mmio: [0xfefc0000-0xfeffffff] > > pci 0000:00:03.0: reg 18 io port: [0xdf80-0xdfff] > > pci 0000:00:03.0: supports D1 D2 > > pci 0000:00:08.0: reg 10 io port: [0xde00-0xdeff] > > pci 0000:00:08.0: reg 14 32bit mmio: [0xfefbb800-0xfefbb8ff] > > pci 0000:00:08.0: reg 30 32bit mmio: [0xfefa0000-0xfefaffff] > > pci 0000:00:0b.0: reg 10 32bit mmio: [0x0e0000-0x0e0fff] > > pci 0000:00:0b.1: reg 10 32bit mmio: [0x0e1000-0x0e10ff] > > pci 0000:00:0c.0: reg 10 io port: [0x1f0-0x1f7] > > pci 0000:00:0c.0: reg 14 io port: [0x3f4-0x3f7] > > pci 0000:00:0c.0: reg 18 io port: [0x170-0x177] > > pci 0000:00:0c.0: reg 1c io port: [0x374-0x377] > > pci 0000:00:0c.0: reg 20 io port: [0xfff0-0xffff] > > pci 0000:00:0c.0: reg 30 32bit mmio: [0x000000-0x01ffff] > > pci 0000:00:07.0: default IRQ router [17f3:6031] > > pci 0000:00:0b.0: BAR 0: can't allocate resource > > pci 0000:00:0b.1: BAR 0: can't allocate resource > > ... > > ------------------------------------------------------------------- > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > > the body of a message to majordomo@...r.kernel.org > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > Please read the FAQ at http://www.tux.org/lkml/ > > > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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