How to find if BIOS has already enabled the device

How to find if BIOS has already enabled the device

[Parag Warudkar]

> On Sad, 2005-05-28 at 14:57, Parag Warudkar wrote:
> > This current problem of Hang-On-Boot if USB drive is attached does not 
happen 
> > with Windows - so it is some sort of additional (unnecessary?) thing which 
> > Linux does and the BIOS doesn't like.  (Like re-enabling the controller 
even 
> > if BIOS has already enabled it or some such.)

> > Alan Cox wrote:
> Provide dmesg output and we might be able to guess. The first obvious
> candidate would be the BIOS refusing to do a handover if it booted from
> USB disk.

Hi Alan

Sorry for digging this out so late - (Quick recap - My machine hangs for 
couple minutes on boot if USB storage disk is attached - hang occurs in 
pci_enable_device).

I have filed a bug to track this one - 
http://bugme.osdl.org/show_bug.cgi?id=4711

Further analysis points towards  wrong/differing IRQ assigments being the 
cause of this hang. I observed that when the machine hangs, the IRQ 
assignment looks like -

18:        379   IO-APIC-level  eth0   
 19:          3   IO-APIC-level  ohci1394   
 20:       1439   IO-APIC-level  ohci_hcd, NVidia nForce3 Modem   
 21:          0   IO-APIC-level  ohci_hcd, NVidia nForce3   
 22:      12884   IO-APIC-level  ehci_hcd   

And when it does NOT hang it looks like -
16:          3   IO-APIC-level  ohci1394   
 18:      49277   IO-APIC-level  nvidia   
 19:       1753   IO-APIC-level  eth0   
 20:       6253   IO-APIC-level  ohci_hcd   
 21:        646   IO-APIC-level  ohci_hcd, NVidia nForce3   
 22:       2225   IO-APIC-level  ehci_hcd, NVidia nForce3 Modem   

Seems to me like the OHCI controller doesn't like to be assigned IRQ 19. Is 
this difference in IRQ assignment normal or is it a bug somewhere? 

Parag

Re: How to find if BIOS has already enabled the device

[Parag Warudkar]

On Saturday 28 May 2005 12:15, Alan Cox wrote:
> On Sad, 2005-05-28 at 15:18, Parag Warudkar wrote:
> > dmesg is perfectly normal, not even timestamp differences before and
> > after call to pci_enable_device - since the machine is completely hung
> > for that period - not even the clock is ticking?
>
> A spurious jammed IRQ is one candidate - but you haven't provided dmesg
> data
>
Whoa - 2.6.12-rc5 automagically fixes this one! 2 *minutes* cut from boot 
time!! BTW - this was present from 2.6.9.

Parag

Re: How to find if BIOS has already enabled the device

[Parag Warudkar]

> Wow, I definitely disagree, considering that the udev maintainer has
> commit privileges for Gentoo.
> 
> Try http://www.gentoo.org/doc/en/udev-guide.xml for help.
> 
> Michael Sterrett
>    -Mr. Bones.-

"Just works" == emerge udev; rc-update add udev boot; reboot 
 -:)! Add "reading a big document" to that and it becomes "works after reading a document" ! 

Well, I had tried the gentoo udev guide, but landed in an non booting system - kernel couldn't mount /dev/hdaX since udev hadn't set it up by then. So I have to add devfs to command line. No offense to udev maintainer or the document writer - the problem might be unique to my setup.

Now going back to my original question - has anyone got an idea as to why pci_enable_device() could hang system for 2 minutes before recovering ;) ?!

Parag

Re: How to find if BIOS has already enabled the device

[Michael Sterrett -Mr. Bones.-]

[-- Attachment #1: Type: TEXT/PLAIN, Size: 535 bytes --]

On Sat, 28 May 2005, Parag Warudkar wrote:

> On Saturday 28 May 2005 20:06, Lee Revell wrote:
>> devfs is not maintained and is listed as deprecated.  You'd be better
>> off using udev.
>
> Yep, that's on my list of things to do - I tried once to switch to udev but
> it's not the  "just works" type - atleast on Gentoo!

Wow, I definitely disagree, considering that the udev maintainer has
commit privileges for Gentoo.

Try http://www.gentoo.org/doc/en/udev-guide.xml for help.

Michael Sterrett
   -Mr. Bones.-
mr_bones_@gentoo.org

Re: How to find if BIOS has already enabled the device

[Parag Warudkar]

On Saturday 28 May 2005 20:06, Lee Revell wrote:
> devfs is not maintained and is listed as deprecated.  You'd be better
> off using udev.

Yep, that's on my list of things to do - I tried once to switch to udev but 
it's not the  "just works" type - atleast on Gentoo! 

-- 

Re: How to find if BIOS has already enabled the device

[Lee Revell]

On Sat, 2005-05-28 at 13:01 -0400, Parag Warudkar wrote:
> devfs_mk_dev: could not append to parent for vcc/5
> devfs_mk_dev: could not append to parent for vcc/a5
> devfs_mk_dev: could not append to parent for vcc/6
> devfs_mk_dev: could not append to parent for vcc/a6

devfs is not maintained and is listed as deprecated.  You'd be better
off using udev.

Lee

Re: How to find if BIOS has already enabled the device

[Parag Warudkar]

On Saturday 28 May 2005 12:15, Alan Cox wrote:
>  but you haven't provided dmesg
> data
I did attach the dmesg in last mail - here it goes - inline this time. Let me 
know if you need anything else. The machine is on internet - can provide ssh 
access if need be.

Thanks

Parag

DMESG Output
-----------------------------------------------------------------------------------------------
0 (usable)
 BIOS-e820: 000000002ff70000 - 000000002ff7f000 (ACPI data)
 BIOS-e820: 000000002ff7f000 - 000000002ff80000 (ACPI NVS)
 BIOS-e820: 000000002ff80000 - 0000000030000000 (reserved)
 BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
ACPI: RSDP (v000 PTLTD                                 ) @ 0x00000000000f7240
ACPI: RSDT (v001 PTLTD    RSDT   0x06040000  LTP 0x00000000) @ 
0x000000002ff7a87e
ACPI: FADT (v001 NVIDIA CK8      0x06040000 PTL_ 0x000f4240) @ 
0x000000002ff7ee13
ACPI: MADT (v001 NVIDIA NV_APIC_ 0x06040000  LTP 0x00000000) @ 
0x000000002ff7ee87
ACPI: BOOT (v001 PTLTD  $SBFTBL$ 0x06040000  LTP 0x00000001) @ 
0x000000002ff7eee1
ACPI: SSDT (v001 PTLTD  POWERNOW 0x06040000  LTP 0x00000001) @ 
0x000000002ff7ef09
ACPI: DSDT (v001 NVIDIA      CK8 0x06040000 MSFT 0x0100000e) @ 
0x0000000000000000
No mptable found.
On node 0 totalpages: 196464
  DMA zone: 4096 pages, LIFO batch:1
  Normal zone: 192368 pages, LIFO batch:16
  HighMem zone: 0 pages, LIFO batch:1
Nvidia board detected. Ignoring ACPI timer override.
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
Processor #0 15:4 APIC version 16
ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 2, version 17, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 low level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: BIOS IRQ0 pin2 override ignored.
ACPI: IRQ9 used by override.
Setting APIC routing to flat
Using ACPI (MADT) for SMP configuration information
Checking aperture...
CPU 0: aperture @ e8000000 size 128 MB
Built 1 zonelists
Kernel command line: root=/dev/ram0 real_root=/dev/hda2 vga=0x317 
video=vesafb:ywrap,mtrr splash=silent,theme:gentoo gentoo=devfs console=tty0
fbsplash: silent
fbsplash: theme gentoo
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 131072 bytes)
time.c: Using 1.193182 MHz PIT timer.
time.c: Detected 1994.870 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
Memory: 766156k/785856k available (3171k kernel code, 18952k reserved, 1272k 
data, 176k init)
Calibrating delay loop... 3948.54 BogoMIPS (lpj=1974272)
Mount-cache hash table entries: 256 (order: 0, 4096 bytes)
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 1024K (64 bytes/line)
CPU: AMD Athlon(tm) 64 Processor 3200+ stepping 08
Using local APIC NMI watchdog using perfctr0
Using local APIC timer interrupts.
Detected 12.467 MHz APIC timer.
checking if image is initramfs...it isn't (no cpio magic); looks like an 
initrd
NET: Registered protocol family 16
PCI: Using configuration type 1
mtrr: v2.0 (20020519)
ACPI: Subsystem revision 20050211
ACPI: Interpreter enabled
ACPI: Using IOAPIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (00:00)
PCI: Probing PCI hardware (bus 00)
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: Embedded Controller [EC0] (gpe 33)
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P2P0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.AGP0._PRT]
ACPI: PCI Interrupt Link [LNK1] (IRQs 16 18 19) *0
ACPI: PCI Interrupt Link [LNK2] (IRQs 16 18 19) *0
ACPI: PCI Interrupt Link [LNK3] (IRQs 17) *0
ACPI: PCI Interrupt Link [LNK4] (IRQs 16 18 19) *0, disabled.
ACPI: PCI Interrupt Link [LNK5] (IRQs 16 18 19) *0
ACPI: PCI Interrupt Link [LSMB] (IRQs 20 21 22) *0
ACPI: PCI Interrupt Link [LUS0] (IRQs 20 21 22) *0
ACPI: PCI Interrupt Link [LUS1] (IRQs 20 21 22) *0
ACPI: PCI Interrupt Link [LUS2] (IRQs 20 21 22) *0
ACPI: PCI Interrupt Link [LMAC] (IRQs 20 21 22) *0, disabled.
ACPI: PCI Interrupt Link [LACI] (IRQs 20 21 22) *0
ACPI: PCI Interrupt Link [LMCI] (IRQs 20 21 22) *0
ACPI: PCI Interrupt Link [LPID] (IRQs 20 21 22) *0, disabled.
ACPI: PCI Interrupt Link [LTID] (IRQs 20 21 22) *0, disabled.
SCSI subsystem initialized
usbcore: registered new driver usbfs
usbcore: registered new driver hub
PCI: Using ACPI for IRQ routing
** PCI interrupts are no longer routed automatically.  If this
** causes a device to stop working, it is probably because the
** driver failed to call pci_enable_device().  As a temporary
** workaround, the "pci=routeirq" argument restores the old
** behavior.  If this argument makes the device work again,
** please email the output of "lspci" to bjorn.helgaas@hp.com
** so I can fix the driver.
TC classifier action (bugs to netdev@oss.sgi.com cc hadi@cyberus.ca)
agpgart: Detected AGP bridge 0
agpgart: Setting up Nforce3 AGP.
agpgart: Maximum main memory to use for agp memory: 690M
agpgart: AGP aperture is 128M @ 0xe8000000
PCI-DMA: Disabling IOMMU.
Simple Boot Flag at 0x37 set to 0x1
IA32 emulation $Id: sys_ia32.c,v 1.32 2002/03/24 13:02:28 ak Exp $
Total HugeTLB memory allocated, 0
inotify device minor=63
Squashfs 2.1 (released 2004/12/10) (C) 2002-2004 Phillip Lougher
devfs: 2004-01-31 Richard Gooch (rgooch@atnf.csiro.au)
devfs: boot_options: 0x0
SGI XFS with ACLs, large block/inode numbers, no debug enabled
Initializing Cryptographic API
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.4
Real Time Clock Driver v1.12
Non-volatile memory driver v1.2
Linux agpgart interface v0.100 (c) Dave Jones
[drm] Initialized drm 1.0.0 20040925
vesafb: framebuffer at 0xf0000000, mapped to 0xffffc20000180000, using 3072k, 
total 65536k
vesafb: mode is 1024x768x16, linelength=2048, pages=1
vesafb: scrolling: redraw
vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0
Console: switching to colour frame buffer device 128x48
fb0: VESA VGA frame buffer device
ACPI: AC Adapter [ACAD] (on-line)
ACPI: Battery Slot [BAT1] (battery present)
ACPI: Power Button (FF) [PWRF]
ACPI: Lid Switch [LID]
ACPI: CPU0 (power states: C1[C1] C2[C2])
ACPI: Thermal Zone [THRM] (73 C)
i8042.c: Detected active multiplexing controller, rev 1.1.
serio: i8042 AUX0 port at 0x60,0x64 irq 12
serio: i8042 AUX1 port at 0x60,0x64 irq 12
serio: i8042 AUX2 port at 0x60,0x64 irq 12
serio: i8042 AUX3 port at 0x60,0x64 irq 12
serio: i8042 KBD port at 0x60,0x64 irq 1
Serial: 8250/16550 driver $Revision: 1.90 $ 8 ports, IRQ sharing disabled
ACPI: PCI Interrupt Link [LMCI] enabled at IRQ 22
ACPI: PCI interrupt 0000:00:06.1[B] -> GSI 22 (level, low) -> IRQ 22
mice: PS/2 mouse device common for all mice
input: AT Translated Set 2 keyboard on isa0060/serio0
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
loop: loaded (max 8 devices)
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
NFORCE3-150: IDE controller at PCI slot 0000:00:08.0
NFORCE3-150: chipset revision 165
NFORCE3-150: not 100% native mode: will probe irqs later
NFORCE3-150: BIOS didn't set cable bits correctly. Enabling workaround.
NFORCE3-150: 0000:00:08.0 (rev a5) UDMA133 controller
    ide0: BM-DMA at 0x2080-0x2087, BIOS settings: hda:DMA, hdb:pio
Losing some ticks... checking if CPU frequency changed.
    ide1: BM-DMA at 0x2088-0x208f, BIOS settings: hdc:DMA, hdd:pio
Probing IDE interface ide0...
hda: FUJITSU MHT2060AT PL, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: HL-DT-ST DVD+RW GCA-4040N, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
Probing IDE interface ide2...
Probing IDE interface ide3...
Probing IDE interface ide4...
Probing IDE interface ide5...
hda: max request size: 128KiB
hda: 117210240 sectors (60011 MB) w/8192KiB Cache, CHS=65535/16/63, UDMA(100)
hda: cache flushes supported
 /dev/ide/host0/bus0/target0/lun0: p1 p2 p3 p4
hdc: ATAPI 24X DVD-ROM CD-R/RW drive, 2048kB Cache, DMA
Uniform CD-ROM driver Revision: 3.20
Advanced Linux Sound Architecture Driver Version 1.0.8 (Thu Jan 13 09:39:32 
2005 UTC).
ALSA device list:
  No soundcards found.
NET: Registered protocol family 2
IP: routing cache hash table of 8192 buckets, 64Kbytes
TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
TCP bind hash table entries: 65536 (order: 7, 524288 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
NET: Registered protocol family 1
NET: Registered protocol family 10
IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
NET: Registered protocol family 15
powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.00.09e)
powernow-k8:    0 : fid 0xc (2000 MHz), vid 0x2 (1500 mV)
powernow-k8:    1 : fid 0x8 (1600 MHz), vid 0xa (1300 mV)
powernow-k8:    2 : fid 0x0 (800 MHz), vid 0x12 (1100 mV)
cpu_init done, current fid 0xc, vid 0x2
ACPI wakeup devices:
USB0 USB1 USB2 PS2K PS2M MAC0
ACPI: (supports S0 S3 S4 S5)
BIOS EDD facility v0.16 2004-Jun-25, 2 devices found
RAMDISK: Compressed image found at block 0
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 176k freed
ACPI: PCI Interrupt Link [LUS2] enabled at IRQ 21
ACPI: PCI interrupt 0000:00:02.2[C] -> GSI 21 (level, low) -> IRQ 21
ehci_hcd 0000:00:02.2: nVidia Corporation nForce3 USB 2.0
PCI: Setting latency timer of device 0000:00:02.2 to 64
ehci_hcd 0000:00:02.2: irq 21, pci mem 0xe0004000
ehci_hcd 0000:00:02.2: new USB bus registered, assigned bus number 1
PCI: cache line size of 64 is not supported by device 0000:00:02.2
ehci_hcd 0000:00:02.2: park 0
ehci_hcd 0000:00:02.2: USB 2.0 initialized, EHCI 1.00, driver 10 Dec 2004
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 6 ports detected
USB Universal Host Controller Interface driver v2.2
ohci_hcd: 2004 Nov 08 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
PCI: Enabling device 0000:00:02.0 (0004 -> 0006)
ACPI: PCI Interrupt Link [LUS0] enabled at IRQ 20
ACPI: PCI interrupt 0000:00:02.0[A] -> GSI 20 (level, low) -> IRQ 20
ohci_hcd 0000:00:02.0: nVidia Corporation nForce3 USB 1.1
PCI: Setting latency timer of device 0000:00:02.0 to 64
ohci_hcd 0000:00:02.0: irq 20, pci mem 0xe0000000
ohci_hcd 0000:00:02.0: new USB bus registered, assigned bus number 2
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 3 ports detected
PCI: Enabling device 0000:00:02.1 (0004 -> 0006)
ACPI: PCI Interrupt Link [LUS1] enabled at IRQ 22
ACPI: PCI interrupt 0000:00:02.1[B] -> GSI 22 (level, low) -> IRQ 22
ohci_hcd 0000:00:02.1: nVidia Corporation nForce3 USB 1.1 (#2)
PCI: Setting latency timer of device 0000:00:02.1 to 64
ohci_hcd 0000:00:02.1: irq 22, pci mem 0xe0001000
ohci_hcd 0000:00:02.1: new USB bus registered, assigned bus number 3
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 3 ports detected
Initializing USB Mass Storage driver...
usb 1-1: new high speed USB device using ehci_hcd and address 2
scsi0 : SCSI emulation for USB Mass Storage devices
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
ieee1394: Initialized config rom entry `ip1394'
ohci1394: $Rev: 1223 $ Ben Collins <bcollins@debian.org>
ACPI: PCI Interrupt Link [LNK1] enabled at IRQ 19
ACPI: PCI interrupt 0000:02:00.0[A] -> GSI 19 (level, low) -> IRQ 19
ohci1394: fw-host0: OHCI-1394 1.1 (PCI): IRQ=[19]  MMIO=[e0108000-e01087ff]  
Max Packet=[2048]
sbp2: $Rev: 1219 $ Ben Collins <bcollins@debian.org>
libata version 1.10 loaded.
usb 3-1: new low speed USB device using ohci_hcd and address 2
ReiserFS: hda2: found reiserfs format "3.6" with standard journal
ieee1394: Host added: ID:BUS[0-00:1023]  GUID[463f0200463f0200]
ReiserFS: hda2: using ordered data mode
ReiserFS: hda2: journal params: device hda2, size 8192, journal first block 
18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
ReiserFS: hda2: checking transaction log (hda2)
ReiserFS: hda2: Using r5 hash to sort names
  Vendor: Maxtor    Model: OneTouch          Rev: 0201
  Type:   Direct-Access                      ANSI SCSI revision: 00
SCSI device sda: 398295040 512-byte hdwr sectors (203927 MB)
sda: assuming drive cache: write through
SCSI device sda: 398295040 512-byte hdwr sectors (203927 MB)
sda: assuming drive cache: write through
 /dev/scsi/host0/bus0/target0/lun0: p1 p2
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0,  type 0
usb-storage: device scan complete
Adding 2241056k swap on /dev/hda4.  Priority:-1 extents:1
st: Version 20041025, fixed bufsize 32768, s/g segs 256
8139too Fast Ethernet driver 0.9.27
ACPI: PCI Interrupt Link [LNK2] enabled at IRQ 18
ACPI: PCI interrupt 0000:02:01.0[A] -> GSI 18 (level, low) -> IRQ 18
eth0: RealTek RTL8139 at 0xffffc20000166800, 00:0f:b0:01:01:65, IRQ 18
eth0:  Identified 8139 chip type 'RTL-8101'
nvidia: module license 'NVIDIA' taints kernel.
ACPI: PCI Interrupt Link [LNK5] enabled at IRQ 16
ACPI: PCI interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> IRQ 16
NVRM: loading NVIDIA Linux x86_64 NVIDIA Kernel Module  1.0-6629  Wed Nov  3 
11:43:48 PST 2004
input: PS/2 Generic Mouse on isa0060/serio4
ReiserFS: hda3: found reiserfs format "3.6" with standard journal
ReiserFS: hda3: using ordered data mode
ReiserFS: hda3: journal params: device hda3, size 8192, journal first block 
18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
ReiserFS: hda3: checking transaction log (hda3)
ReiserFS: hda3: Using r5 hash to sort names
eth0: link up, 10Mbps, half-duplex, lpa 0x0000
i2c_adapter i2c-0: nForce2 SMBus adapter at 0x2040
i2c_adapter i2c-1: nForce2 SMBus adapter at 0x2000
ACPI: PCI Interrupt Link [LACI] enabled at IRQ 21
ACPI: PCI interrupt 0000:00:06.0[A] -> GSI 21 (level, low) -> IRQ 21
PCI: Setting latency timer of device 0000:00:06.0 to 64
intel8x0_measure_ac97_clock: measured 49413 usecs
intel8x0: clocking to 47436
ACPI: PCI interrupt 0000:00:06.1[B] -> GSI 22 (level, low) -> IRQ 22
PCI: Setting latency timer of device 0000:00:06.1 to 64
8139cp: 10/100 PCI Ethernet driver v1.2 (Mar 22, 2004)
usbcore: registered new driver hiddev
input: USB HID v1.10 Mouse [ Kensington ? Pocket Mouse Pro Wireless] on 
usb-0000:00:02.1-1
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.0:USB HID core driver
devfs_mk_dev: could not append to parent for vcc/5
devfs_mk_dev: could not append to parent for vcc/a5
devfs_mk_dev: could not append to parent for vcc/6
devfs_mk_dev: could not append to parent for vcc/a6
Disabled Privacy Extensions on device ffffffff80505ba0(lo)
fbsplash: switching to verbose mode
eth0: link up, 10Mbps, half-duplex, lpa 0x0000
devfs_mk_dev: could not append to parent for vcc/2
devfs_mk_dev: could not append to parent for vcc/a2
devfs_mk_dev: could not append to parent for vcc/3
devfs_mk_dev: could not append to parent for vcc/a3
devfs_mk_dev: could not append to parent for vcc/4
devfs_mk_dev: could not append to parent for vcc/a4
devfs_mk_dev: could not append to parent for vcc/7
devfs_mk_dev: could not append to parent for vcc/a7
agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
agpgart: Putting AGP V2 device at 0000:01:00.0 into 4x mode
agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
agpgart: Putting AGP V2 device at 0000:01:00.0 into 4x mode
eth0: no IPv6 routers present
floppy0: no floppy controllers found
floppy0: no floppy controllers found
-- 
For every vision there is an equal and opposite revision.

Re: How to find if BIOS has already enabled the device

[Alan Cox]

On Sad, 2005-05-28 at 15:18, Parag Warudkar wrote:
> dmesg is perfectly normal, not even timestamp differences before and after 
> call to pci_enable_device - since the machine is completely hung for that 
> period - not even the clock is ticking?

A spurious jammed IRQ is one candidate - but you haven't provided dmesg
data

Re: How to find if BIOS has already enabled the device

[Parag Warudkar]

On Saturday 28 May 2005 10:18, Parag Warudkar wrote:
> dmesg is perfectly normal, not even timestamp differences before and after
> call to pci_enable_device - since the machine is completely hung for that
> period - not even the clock is ticking?
I should have added - Presence or absence of Nvidia module does not make any 
difference.
-- 
Virtue would go far if vanity did not keep it company.
		-- La Rochefoucauld

Re: How to find if BIOS has already enabled the device

[Parag Warudkar]

[-- Attachment #1: Type: text/plain, Size: 1525 bytes --]

On Saturday 28 May 2005 10:04, Alan Cox wrote:
> On Sad, 2005-05-28 at 14:57, Parag Warudkar wrote:
> > This current problem of Hang-On-Boot if USB drive is attached does not
> > happen with Windows - so it is some sort of additional (unnecessary?)
> > thing which Linux does and the BIOS doesn't like.  (Like re-enabling the
> > controller even if BIOS has already enabled it or some such.)
>
> Provide dmesg output and we might be able to guess. The first obvious
> candidate would be the BIOS refusing to do a handover if it booted from
> USB disk.

In the hang case, the machine is booting from internal HDD not USB disk, the 
USB disk is just attached and powered on during boot. As I said I have 
tracked the hang down to pci_enable_device() called by usb_hcd_pci_probe(). 
If the USB disk is attached and powered on, the usb_hcd_pci_probe()'s call to 
pci_enable_device() for the controller leads to this 2 minute hang. (Which 
cures itself after that). 

There are two cases in which the hang does not occur -
1) If I remove the pci_enable_device() call load of ohci-hcd doesn't hang even 
if the USB disk was attached/on.
and 
2) If I attach the USB HDD _After_ the load of ohci-hcd is done (i.e. after 
the call to pci_enable_device())

dmesg is perfectly normal, not even timestamp differences before and after 
call to pci_enable_device - since the machine is completely hung for that 
period - not even the clock is ticking?

Parag
-- 
The memory management in Windows 95 can be used to frighten small children.

[-- Attachment #2: dmesg.out --]
[-- Type: text/plain, Size: 15457 bytes --]

0000 (usable)
 BIOS-e820: 000000002ff70000 - 000000002ff7f000 (ACPI data)
 BIOS-e820: 000000002ff7f000 - 000000002ff80000 (ACPI NVS)
 BIOS-e820: 000000002ff80000 - 0000000030000000 (reserved)
 BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
ACPI: RSDP (v000 PTLTD                                 ) @ 0x00000000000f7240
ACPI: RSDT (v001 PTLTD    RSDT   0x06040000  LTP 0x00000000) @ 0x000000002ff7a87e
ACPI: FADT (v001 NVIDIA CK8      0x06040000 PTL_ 0x000f4240) @ 0x000000002ff7ee13
ACPI: MADT (v001 NVIDIA NV_APIC_ 0x06040000  LTP 0x00000000) @ 0x000000002ff7ee87
ACPI: BOOT (v001 PTLTD  $SBFTBL$ 0x06040000  LTP 0x00000001) @ 0x000000002ff7eee1
ACPI: SSDT (v001 PTLTD  POWERNOW 0x06040000  LTP 0x00000001) @ 0x000000002ff7ef09
ACPI: DSDT (v001 NVIDIA      CK8 0x06040000 MSFT 0x0100000e) @ 0x0000000000000000
No mptable found.
On node 0 totalpages: 196464
  DMA zone: 4096 pages, LIFO batch:1
  Normal zone: 192368 pages, LIFO batch:16
  HighMem zone: 0 pages, LIFO batch:1
Nvidia board detected. Ignoring ACPI timer override.
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
Processor #0 15:4 APIC version 16
ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 2, version 17, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 low level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: BIOS IRQ0 pin2 override ignored.
ACPI: IRQ9 used by override.
Setting APIC routing to flat
Using ACPI (MADT) for SMP configuration information
Checking aperture...
CPU 0: aperture @ e8000000 size 128 MB
Built 1 zonelists
Kernel command line: root=/dev/ram0 real_root=/dev/hda2 vga=0x317 video=vesafb:ywrap,mtrr splash=silent,theme:gentoo gentoo=devfs console=tty0
fbsplash: silent
fbsplash: theme gentoo
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 131072 bytes)
time.c: Using 1.193182 MHz PIT timer.
time.c: Detected 797.958 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
Memory: 766156k/785856k available (3171k kernel code, 18952k reserved, 1272k data, 176k init)
Calibrating delay loop... 1581.05 BogoMIPS (lpj=790528)
Mount-cache hash table entries: 256 (order: 0, 4096 bytes)
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 1024K (64 bytes/line)
CPU: AMD Athlon(tm) 64 Processor 3200+ stepping 08
Using local APIC NMI watchdog using perfctr0
Using local APIC timer interrupts.
Detected 12.468 MHz APIC timer.
checking if image is initramfs...it isn't (no cpio magic); looks like an initrd
NET: Registered protocol family 16
PCI: Using configuration type 1
mtrr: v2.0 (20020519)
ACPI: Subsystem revision 20050211
ACPI: Interpreter enabled
ACPI: Using IOAPIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (00:00)
PCI: Probing PCI hardware (bus 00)
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: Embedded Controller [EC0] (gpe 33)
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P2P0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.AGP0._PRT]
ACPI: PCI Interrupt Link [LNK1] (IRQs 16 18 19) *0
ACPI: PCI Interrupt Link [LNK2] (IRQs 16 18 19) *0
ACPI: PCI Interrupt Link [LNK3] (IRQs 17) *0
ACPI: PCI Interrupt Link [LNK4] (IRQs 16 18 19) *0, disabled.
ACPI: PCI Interrupt Link [LNK5] (IRQs 16 18 19) *0
ACPI: PCI Interrupt Link [LSMB] (IRQs 20 21 22) *0
ACPI: PCI Interrupt Link [LUS0] (IRQs 20 21 22) *0
ACPI: PCI Interrupt Link [LUS1] (IRQs 20 21 22) *0
ACPI: PCI Interrupt Link [LUS2] (IRQs 20 21 22) *0
ACPI: PCI Interrupt Link [LMAC] (IRQs 20 21 22) *0, disabled.
ACPI: PCI Interrupt Link [LACI] (IRQs 20 21 22) *0
ACPI: PCI Interrupt Link [LMCI] (IRQs 20 21 22) *0
ACPI: PCI Interrupt Link [LPID] (IRQs 20 21 22) *0, disabled.
ACPI: PCI Interrupt Link [LTID] (IRQs 20 21 22) *0, disabled.
SCSI subsystem initialized
usbcore: registered new driver usbfs
usbcore: registered new driver hub
PCI: Using ACPI for IRQ routing
** PCI interrupts are no longer routed automatically.  If this
** causes a device to stop working, it is probably because the
** driver failed to call pci_enable_device().  As a temporary
** workaround, the "pci=routeirq" argument restores the old
** behavior.  If this argument makes the device work again,
** please email the output of "lspci" to bjorn.helgaas@hp.com
** so I can fix the driver.
TC classifier action (bugs to netdev@oss.sgi.com cc hadi@cyberus.ca)
agpgart: Detected AGP bridge 0
agpgart: Setting up Nforce3 AGP.
agpgart: Maximum main memory to use for agp memory: 690M
agpgart: AGP aperture is 128M @ 0xe8000000
PCI-DMA: Disabling IOMMU.
Simple Boot Flag at 0x37 set to 0x1
IA32 emulation $Id: sys_ia32.c,v 1.32 2002/03/24 13:02:28 ak Exp $
Total HugeTLB memory allocated, 0
inotify device minor=63
Squashfs 2.1 (released 2004/12/10) (C) 2002-2004 Phillip Lougher
devfs: 2004-01-31 Richard Gooch (rgooch@atnf.csiro.au)
devfs: boot_options: 0x0
SGI XFS with ACLs, large block/inode numbers, no debug enabled
Initializing Cryptographic API
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.4
Real Time Clock Driver v1.12
Non-volatile memory driver v1.2
Linux agpgart interface v0.100 (c) Dave Jones
[drm] Initialized drm 1.0.0 20040925
vesafb: framebuffer at 0xf0000000, mapped to 0xffffc20000180000, using 3072k, total 65536k
vesafb: mode is 1024x768x16, linelength=2048, pages=1
vesafb: scrolling: redraw
vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0
Console: switching to colour frame buffer device 128x48
fb0: VESA VGA frame buffer device
ACPI: AC Adapter [ACAD] (on-line)
ACPI: Battery Slot [BAT1] (battery present)
ACPI: Power Button (FF) [PWRF]
ACPI: Lid Switch [LID]
ACPI: CPU0 (power states: C1[C1] C2[C2])
ACPI: Thermal Zone [THRM] (27 C)
i8042.c: Detected active multiplexing controller, rev 1.1.
serio: i8042 AUX0 port at 0x60,0x64 irq 12
serio: i8042 AUX1 port at 0x60,0x64 irq 12
serio: i8042 AUX2 port at 0x60,0x64 irq 12
serio: i8042 AUX3 port at 0x60,0x64 irq 12
serio: i8042 KBD port at 0x60,0x64 irq 1
Serial: 8250/16550 driver $Revision: 1.90 $ 8 ports, IRQ sharing disabled
ACPI: PCI Interrupt Link [LMCI] enabled at IRQ 22
ACPI: PCI interrupt 0000:00:06.1[B] -> GSI 22 (level, low) -> IRQ 22
mice: PS/2 mouse device common for all mice
input: AT Translated Set 2 keyboard on isa0060/serio0
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
loop: loaded (max 8 devices)
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
NFORCE3-150: IDE controller at PCI slot 0000:00:08.0
NFORCE3-150: chipset revision 165
NFORCE3-150: not 100% native mode: will probe irqs later
NFORCE3-150: BIOS didn't set cable bits correctly. Enabling workaround.
Losing some ticks... checking if CPU frequency changed.
NFORCE3-150: 0000:00:08.0 (rev a5) UDMA133 controller
    ide0: BM-DMA at 0x2080-0x2087, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0x2088-0x208f, BIOS settings: hdc:DMA, hdd:pio
Probing IDE interface ide0...
hda: FUJITSU MHT2060AT PL, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: HL-DT-ST DVD+RW GCA-4040N, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
Probing IDE interface ide2...
Probing IDE interface ide3...
Probing IDE interface ide4...
Probing IDE interface ide5...
hda: max request size: 128KiB
hda: 117210240 sectors (60011 MB) w/8192KiB Cache, CHS=65535/16/63, UDMA(100)
hda: cache flushes supported
 /dev/ide/host0/bus0/target0/lun0: p1 p2 p3 p4
hdc: ATAPI 24X DVD-ROM CD-R/RW drive, 2048kB Cache, DMA
Uniform CD-ROM driver Revision: 3.20
Advanced Linux Sound Architecture Driver Version 1.0.8 (Thu Jan 13 09:39:32 2005 UTC).
ALSA device list:
  No soundcards found.
NET: Registered protocol family 2
IP: routing cache hash table of 8192 buckets, 64Kbytes
TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
TCP bind hash table entries: 65536 (order: 7, 524288 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
NET: Registered protocol family 1
NET: Registered protocol family 10
IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
NET: Registered protocol family 15
powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.00.09e)
powernow-k8:    0 : fid 0xc (2000 MHz), vid 0x2 (1500 mV)
powernow-k8:    1 : fid 0x8 (1600 MHz), vid 0xa (1300 mV)
powernow-k8:    2 : fid 0x0 (800 MHz), vid 0x12 (1100 mV)
cpu_init done, current fid 0x0, vid 0x12
ACPI wakeup devices: 
USB0 USB1 USB2 PS2K PS2M MAC0 
ACPI: (supports S0 S3 S4 S5)
BIOS EDD facility v0.16 2004-Jun-25, 1 devices found
RAMDISK: Compressed image found at block 0
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 176k freed
ACPI: PCI Interrupt Link [LUS2] enabled at IRQ 21
ACPI: PCI interrupt 0000:00:02.2[C] -> GSI 21 (level, low) -> IRQ 21
ehci_hcd 0000:00:02.2: nVidia Corporation nForce3 USB 2.0
PCI: Setting latency timer of device 0000:00:02.2 to 64
ehci_hcd 0000:00:02.2: irq 21, pci mem 0xe0004000
ehci_hcd 0000:00:02.2: new USB bus registered, assigned bus number 1
PCI: cache line size of 64 is not supported by device 0000:00:02.2
ehci_hcd 0000:00:02.2: park 0
ehci_hcd 0000:00:02.2: USB 2.0 initialized, EHCI 1.00, driver 10 Dec 2004
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 6 ports detected
USB Universal Host Controller Interface driver v2.2
ohci_hcd: 2004 Nov 08 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
PCI: Enabling device 0000:00:02.0 (0004 -> 0006)
ACPI: PCI Interrupt Link [LUS0] enabled at IRQ 20
ACPI: PCI interrupt 0000:00:02.0[A] -> GSI 20 (level, low) -> IRQ 20
ohci_hcd 0000:00:02.0: nVidia Corporation nForce3 USB 1.1
PCI: Setting latency timer of device 0000:00:02.0 to 64
ohci_hcd 0000:00:02.0: irq 20, pci mem 0xe0000000
ohci_hcd 0000:00:02.0: new USB bus registered, assigned bus number 2
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 3 ports detected
PCI: Enabling device 0000:00:02.1 (0004 -> 0006)
ACPI: PCI Interrupt Link [LUS1] enabled at IRQ 22
ACPI: PCI interrupt 0000:00:02.1[B] -> GSI 22 (level, low) -> IRQ 22
ohci_hcd 0000:00:02.1: nVidia Corporation nForce3 USB 1.1 (#2)
PCI: Setting latency timer of device 0000:00:02.1 to 64
ohci_hcd 0000:00:02.1: irq 22, pci mem 0xe0001000
ohci_hcd 0000:00:02.1: new USB bus registered, assigned bus number 3
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 3 ports detected
Initializing USB Mass Storage driver...
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
ieee1394: Initialized config rom entry `ip1394'
ohci1394: $Rev: 1223 $ Ben Collins <bcollins@debian.org>
ACPI: PCI Interrupt Link [LNK1] enabled at IRQ 19
ACPI: PCI interrupt 0000:02:00.0[A] -> GSI 19 (level, low) -> IRQ 19
ohci1394: fw-host0: OHCI-1394 1.1 (PCI): IRQ=[19]  MMIO=[e0108000-e01087ff]  Max Packet=[2048]
sbp2: $Rev: 1219 $ Ben Collins <bcollins@debian.org>
libata version 1.10 loaded.
ReiserFS: hda2: found reiserfs format "3.6" with standard journal
ieee1394: Host added: ID:BUS[0-00:1023]  GUID[463f0200463f0200]
ReiserFS: hda2: using ordered data mode
ReiserFS: hda2: journal params: device hda2, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
ReiserFS: hda2: checking transaction log (hda2)
ReiserFS: hda2: Using r5 hash to sort names
Adding 2241056k swap on /dev/hda4.  Priority:-1 extents:1
st: Version 20041025, fixed bufsize 32768, s/g segs 256
8139too Fast Ethernet driver 0.9.27
ACPI: PCI Interrupt Link [LNK2] enabled at IRQ 18
ACPI: PCI interrupt 0000:02:01.0[A] -> GSI 18 (level, low) -> IRQ 18
eth0: RealTek RTL8139 at 0xffffc20000166800, 00:0f:b0:01:01:65, IRQ 18
eth0:  Identified 8139 chip type 'RTL-8101'
nvidia: module license 'NVIDIA' taints kernel.
ACPI: PCI Interrupt Link [LNK5] enabled at IRQ 16
ACPI: PCI interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> IRQ 16
NVRM: loading NVIDIA Linux x86_64 NVIDIA Kernel Module  1.0-6629  Wed Nov  3 11:43:48 PST 2004
input: PS/2 Generic Mouse on isa0060/serio4
ReiserFS: hda3: found reiserfs format "3.6" with standard journal
ReiserFS: hda3: using ordered data mode
ReiserFS: hda3: journal params: device hda3, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
ReiserFS: hda3: checking transaction log (hda3)
ReiserFS: hda3: Using r5 hash to sort names
eth0: link up, 10Mbps, half-duplex, lpa 0x0000
i2c_adapter i2c-0: nForce2 SMBus adapter at 0x2040
i2c_adapter i2c-1: nForce2 SMBus adapter at 0x2000
ACPI: PCI Interrupt Link [LACI] enabled at IRQ 21
ACPI: PCI interrupt 0000:00:06.0[A] -> GSI 21 (level, low) -> IRQ 21
PCI: Setting latency timer of device 0000:00:06.0 to 64
intel8x0_measure_ac97_clock: measured 49403 usecs
intel8x0: clocking to 47426
ACPI: PCI interrupt 0000:00:06.1[B] -> GSI 22 (level, low) -> IRQ 22
PCI: Setting latency timer of device 0000:00:06.1 to 64
8139cp: 10/100 PCI Ethernet driver v1.2 (Mar 22, 2004)
devfs_mk_dev: could not append to parent for vcc/5
devfs_mk_dev: could not append to parent for vcc/a5
devfs_mk_dev: could not append to parent for vcc/6
devfs_mk_dev: could not append to parent for vcc/a6
devfs_mk_dev: could not append to parent for vcc/7
devfs_mk_dev: could not append to parent for vcc/a7
Disabled Privacy Extensions on device ffffffff80505ba0(lo)
fbsplash: switching to verbose mode
eth0: link up, 10Mbps, half-duplex, lpa 0x0000
agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
agpgart: Putting AGP V2 device at 0000:01:00.0 into 4x mode
agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
agpgart: Putting AGP V2 device at 0000:01:00.0 into 4x mode
eth0: no IPv6 routers present
floppy0: no floppy controllers found
floppy0: no floppy controllers found
fortune[11636] general protection rip:2aaaaaeecbfb rsp:7fffffff91c0 error:0
ohci_hcd 0000:00:02.1: wakeup
usb 3-1: new low speed USB device using ohci_hcd and address 2
usbcore: registered new driver hiddev
input: USB HID v1.10 Mouse [ Kensington ? Pocket Mouse Pro Wireless] on usb-0000:00:02.1-1
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.0:USB HID core driver
usb 1-1: new high speed USB device using ehci_hcd and address 3
scsi0 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 3
usb-storage: waiting for device to settle before scanning
  Vendor: Maxtor    Model: OneTouch          Rev: 0201
  Type:   Direct-Access                      ANSI SCSI revision: 00
SCSI device sda: 398295040 512-byte hdwr sectors (203927 MB)
sda: assuming drive cache: write through
SCSI device sda: 398295040 512-byte hdwr sectors (203927 MB)
sda: assuming drive cache: write through
 /dev/scsi/host0/bus0/target0/lun0: p1 p2
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0,  type 0
usb-storage: device scan complete
NTFS driver 2.1.22 [Flags: R/O MODULE].
NTFS volume version 3.1.
kjournald starting.  Commit interval 5 seconds
EXT3 FS on sda2, internal journal
EXT3-fs: mounted filesystem with ordered data mode.

Re: How to find if BIOS has already enabled the device

[Alan Cox]

On Sad, 2005-05-28 at 14:57, Parag Warudkar wrote:
> This current problem of Hang-On-Boot if USB drive is attached does not happen 
> with Windows - so it is some sort of additional (unnecessary?) thing which 
> Linux does and the BIOS doesn't like.  (Like re-enabling the controller even 
> if BIOS has already enabled it or some such.)

Provide dmesg output and we might be able to guess. The first obvious
candidate would be the BIOS refusing to do a handover if it booted from
USB disk.

Re: How to find if BIOS has already enabled the device

[Parag Warudkar]

On Friday 27 May 2005 23:24, John Livingston wrote:
> Also, is your BIOS fully up to date/modern?  A quick Google search found
> a few things like this:
> http://www.techspot.com/vb/all/windows/t-18940-USB-Hub-And-Boot-Problems.ht
>ml The problem might be more generic than a bad interaction between drive
> and kernel.
My BIOS is the latest version available from the laptop vendor. The laptop has 
some minor but peculiar issues - If I boot into Windows XP all works fine all 
the times (With USB HDD on during boot). If  I then restart the machine 
(without turning off) and boot into Linux - Linux doesn't detect my keyboard. 
I have power it off and reboot, only then it will detect the keyboard. So I 
wouldn't say the machine is 100% defect free but Windows has a way to work 
around it.

This current problem of Hang-On-Boot if USB drive is attached does not happen 
with Windows - so it is some sort of additional (unnecessary?) thing which 
Linux does and the BIOS doesn't like.  (Like re-enabling the controller even 
if BIOS has already enabled it or some such.)

Parag

Re: How to find if BIOS has already enabled the device

[John Livingston]

>
>The offending code is in hcd-pci.c - which 
>seems to be executed unconditionally. usb_hcd_pci_probe() calls 
>pci_enable_device() which hangs if there was already a device present, 
>attached to the controller. 
>  
>
Have you attempted more generic fix-hardware-hang solutions?  I've known 
more than a few times where a good old "noapic nolapic" snapped a box 
out of some strange and seemingly unrelated problems...

Also, is your BIOS fully up to date/modern?  A quick Google search found 
a few things like this:
http://www.techspot.com/vb/all/windows/t-18940-USB-Hub-And-Boot-Problems.html
The problem might be more generic than a bad interaction between drive 
and kernel.

~John Livingston

Re: How to find if BIOS has already enabled the device

[Parag Warudkar]

On Friday 27 May 2005 21:34, Aleksey Gorelov wrote:
> See if 'usb-handoff' as a kernel parameter makes it any better.
>
> Aleks.

Nope - Doesn't help as expected. The offending code is in hcd-pci.c - which 
seems to be executed unconditionally. usb_hcd_pci_probe() calls 
pci_enable_device() which hangs if there was already a device present, 
attached to the controller. 

Parag

RE: How to find if BIOS has already enabled the device

[Aleksey Gorelov]

>I am trying to trace the root cause of an annoying problem 
>with a USB Storage 
>device - 
>
>My laptop's BIOS supports booting from USB devices. I have attached an 
>external USB HDD to a USB 2.0 port. If I boot Linux with the 
>HDD attached and 
>powered on, load of OHCI-HCD module hangs the machine for 
>around 2 minutes - 
>after that it recovers and all is fine. I have tried different distros 
>without luck, but while installing debian, I figured out that the hang 
>happens after ohci-hcd calls pci_enable_device() for the USB 
>controller.
>
>This does not happen when the boot is complete. I.e. if I 
>attach the HDD after 
>boot is complete (BIOS did not get a chance to enable it 
>beforehand) load of 
>ohci-hcd (during and after boot) does not hang the machine.
>
>I think since the machine supports booting from USB HDD, the 
>BIOS must be 
>enabling the USB controller and attached device early during 
>boot, and when 
>ohci-hcd tries to re-enable it, it doesn't like it and leads 
>to a hang. 

See if 'usb-handoff' as a kernel parameter makes it any better.

Aleks.

>
>My question - Is it possible to detect if the USB controller 
>is already 
>enabled and skip enabling it second time?
>
>Thanks
>
>Parag
>-
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