Adjunct is the output of dmidecode (:
I didn't try setting "try_handoff" to 0, but I think behavior is
predictable since in that case the kernel will never reach the
pci_write in question. I found a kernel compiling option named "Enable
PCI quirk workarounds". It seems what i've been looking for (i mean,
disabling of it), at least while i have this buggy bios...
2014-05-29 11:46 GMT-03:00 Alan Stern <st...@rowland.harvard.edu>:
> On Wed, 28 May 2014, Leandro Liptak wrote:
>
>> > If you comment out the pci_write and plug in a USB device, like a flash
>> > drive, does it work okay?
>> >
>> > Have you checked for any BIOS updates available from the manufacturer?
>> > This really sounds like a bug in the BIOS.
>>
>> Yes, any plugged USB device seems to work ok! I didn't find any BIOS
>> update.. So I don't know if this line of code is really necessary at
>> all, perhaps it could be a configuration option at kernel compilation
>> time (?)
>
> It really is necessary. It is documented in section 5.1 of the EHCI
> specification. If your computer hangs then your computer is not
> compliant with the spec. This is undoubtedly caused by a BIOS bug.
>
> What happens if you initialize try_handoff (at the start of the
> functionn) to 0 instead of 1, and leave the pci_write unchanged?
>
> Also, can you post the output from dmidecode?
>
> Alan Stern
>
# dmidecode 2.11
SMBIOS 2.6 present.
36 structures occupying 1377 bytes.
Table at 0x000DC010.
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: Phoenix Technologies LTD
Version: 6.00
Release Date: 03/22/2011
Address: 0xE8000
Runtime Size: 96 kB
ROM Size: 1024 kB
Characteristics:
ISA is supported
PCI is supported
PNP is supported
BIOS is upgradeable
BIOS shadowing is allowed
ESCD support is available
Boot from CD is supported
Selectable boot is supported
BIOS ROM is socketed
EDD is supported
Print screen service is supported (int 5h)
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
CGA/mono video services are supported (int 10h)
USB legacy is supported
Smart battery is supported
BIOS boot specification is supported
Targeted content distribution is supported
Handle 0x0001, DMI type 1, 27 bytes
System Information
Manufacturer: HASEE
Product Name: E200
Version: Revision A
Serial Number: 0123456789
UUID: Not Present
Wake-up Type: Power Switch
SKU Number: 1234567890
Family: 1234567890
Handle 0x0002, DMI type 2, 17 bytes
Base Board Information
Manufacturer: HASEE
Product Name: E210
Version: Revision B
Serial Number: 400
Asset Tag: PTL Nanjing
Features:
Board is a hosting board
Board is replaceable
Location In Chassis: Not Applicable
Chassis Handle: 0x0003
Type: Motherboard
Contained Object Handles: 1
0x0000
Handle 0x0003, DMI type 3, 21 bytes
Chassis Information
Manufacturer: No Enclosure
Type: Other
Lock: Not Present
Version: N/A
Serial Number: None
Asset Tag: No Asset Tag
Boot-up State: Safe
Power Supply State: Safe
Thermal State: Safe
Security Status: None
OEM Information: 0x00001234
Height: Unspecified
Number Of Power Cords: Unspecified
Contained Elements: 0
Handle 0x0004, DMI type 4, 42 bytes
Processor Information
Socket Designation: CPU 1
Type: Central Processor
Family: Other
Manufacturer: Intel
ID: CA 06 01 00 FF FB EB BF
Version: C1
Voltage: 1.8 V
External Clock: 200 MHz
Max Speed: 1800 MHz
Current Speed: 1800 MHz
Status: Populated, Enabled
Upgrade: Socket LGA775
L1 Cache Handle: 0x0005
L2 Cache Handle: 0x0006
L3 Cache Handle: Not Provided
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Core Count: 2
Core Enabled: 2
Thread Count: 4
Characteristics:
64-bit capable
Handle 0x0005, DMI type 7, 19 bytes
Cache Information
Socket Designation: L1 Cache
Configuration: Enabled, Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 24 kB
Maximum Size: 24 kB
Supported SRAM Types:
Burst
Pipeline Burst
Asynchronous
Installed SRAM Type: Asynchronous
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Data
Associativity: Other
Handle 0x0006, DMI type 7, 19 bytes
Cache Information
Socket Designation: L2 Cache
Configuration: Enabled, Socketed, Level 2
Operational Mode: Write Back
Location: Internal
Installed Size: 512 kB
Maximum Size: 512 kB
Supported SRAM Types:
Burst
Pipeline Burst
Asynchronous
Installed SRAM Type: Burst
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Unified
Associativity: 8-way Set-associative
Handle 0x0007, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J8A2
Internal Connector Type: 9 Pin Dual Inline (pin 10 cut)
External Reference Designator: COM 1
External Connector Type: DB-9 male
Port Type: Serial Port 16550A Compatible
Handle 0x0008, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J7A1
Internal Connector Type: None
External Reference Designator: Keyboard
External Connector Type: Circular DIN-8 male
Port Type: Keyboard Port
Handle 0x0009, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J7A1
Internal Connector Type: None
External Reference Designator: PS/2 Mouse
External Connector Type: Circular DIN-8 male
Port Type: Keyboard Port
Handle 0x000A, DMI type 9, 17 bytes
System Slot Information
Designation: PCI Slot #1 - J1B1
Type: 32-bit PCI
Current Usage: Available
Length: Long
ID: 2
Characteristics:
5.0 V is provided
3.3 V is provided
Bus Address: 0000:11:00.0
Handle 0x000B, DMI type 9, 17 bytes
System Slot Information
Designation: PCIe Slot #1 - J2D1
Type: 32-bit PCI Express
Current Usage: Available
Length: Long
ID: 10
Characteristics:
5.0 V is provided
3.3 V is provided
Bus Address: 0000:16:00.0
Handle 0x000C, DMI type 9, 17 bytes
System Slot Information
Designation: PCIe Slot #2 - J2C1
Type: 32-bit PCI Express
Current Usage: Available
Length: Long
ID: 9
Characteristics:
5.0 V is provided
3.3 V is provided
Bus Address: 0000:15:00.0
Handle 0x000D, DMI type 9, 17 bytes
System Slot Information
Designation: PCIe Slot #3 - J3C1
Type: 32-bit PCI Express
Current Usage: In Use
Length: Long
ID: 8
Characteristics:
5.0 V is provided
3.3 V is provided
Bus Address: 0000:14:00.0
Handle 0x000E, DMI type 9, 17 bytes
System Slot Information
Designation: PCIe Slot #4 - J4C1
Type: 32-bit PCI Express
Current Usage: In Use
Length: Long
ID: 7
Characteristics:
5.0 V is provided
3.3 V is provided
Bus Address: 0000:13:00.0
Handle 0x000F, DMI type 10, 6 bytes
On Board Device Information
Type: Sound
Status: Disabled
Description: ADI1886
Handle 0x0010, DMI type 11, 5 bytes
OEM Strings
String 1: This is the Intel x35
String 2: Customer Reference Board
Handle 0x0011, DMI type 12, 5 bytes
System Configuration Options
Option 1: Jumper settings can be described here.
Handle 0x0012, DMI type 15, 29 bytes
System Event Log
Area Length: 64 bytes
Header Start Offset: 0x0000
Header Length: 16 bytes
Data Start Offset: 0x0010
Access Method: General-purpose non-volatile data functions
Access Address: 0x0000
Status: Valid, Not Full
Change Token: 0x0000001F
Header Format: Type 1
Supported Log Type Descriptors: 3
Descriptor 1: POST error
Data Format 1: POST results bitmap
Descriptor 2: Single-bit ECC memory error
Data Format 2: Multiple-event
Descriptor 3: Multi-bit ECC memory error
Data Format 3: Multiple-event
Handle 0x0013, DMI type 16, 15 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 2 GB
Error Information Handle: Not Provided
Number Of Devices: 2
Handle 0x0014, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x0013
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: SODIMM
Set: 1
Locator: J6G1
Bank Locator: DIMM 0
Type: DDR3
Type Detail: Synchronous
Speed: 800 MHz
Manufacturer: 04CB
Serial Number: 141B0000
Asset Tag: 1212
Part Number: AD73I1B0873EV
Rank: Unknown
Handle 0x0015, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x0013
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: SODIMM
Set: 1
Locator: J6G2
Bank Locator: DIMM 1
Type: DDR3
Type Detail: Synchronous
Speed: 800 MHz
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Rank: Unknown
Handle 0x0016, DMI type 19, 15 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x0007FFFFFFF
Range Size: 2 GB
Physical Array Handle: 0x0013
Partition Width: 2
Handle 0x0017, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x0007FFFFFFF
Range Size: 2 GB
Physical Device Handle: 0x0014
Memory Array Mapped Address Handle: 0x0016
Partition Row Position: Unknown
Interleave Position: Unknown
Interleaved Data Depth: Unknown
Handle 0x0018, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x0007FFFFC00
Ending Address: 0x0007FFFFFFF
Range Size: 1 kB
Physical Device Handle: 0x0015
Memory Array Mapped Address Handle: 0x0016
Partition Row Position: Unknown
Interleave Position: Unknown
Interleaved Data Depth: Unknown
Handle 0x0019, DMI type 23, 13 bytes
System Reset
Status: Enabled
Watchdog Timer: Present
Boot Option: Do Not Reboot
Boot Option On Limit: Do Not Reboot
Reset Count: Unknown
Reset Limit: Unknown
Timer Interval: Unknown
Timeout: Unknown
Handle 0x001A, DMI type 24, 5 bytes
Hardware Security
Power-On Password Status: Disabled
Keyboard Password Status: Unknown
Administrator Password Status: Disabled
Front Panel Reset Status: Unknown
Handle 0x001B, DMI type 25, 9 bytes
System Power Controls
Next Scheduled Power-on: 12-31 23:59:59
Handle 0x001C, DMI type 26, 20 bytes
Voltage Probe
Description: Voltage Probe
Location: Processor
Status: OK
Maximum Value: Unknown
Minimum Value: Unknown
Resolution: Unknown
Tolerance: Unknown
Accuracy: Unknown
OEM-specific Information: 0x00000000
Handle 0x001D, DMI type 27, 12 bytes
Cooling Device
Temperature Probe Handle: 0x001E
Type: Fan
Status: OK
OEM-specific Information: 0x00000000
Handle 0x001E, DMI type 28, 20 bytes
Temperature Probe
Description: Temperature Probe
Location: Processor
Status: OK
Maximum Value: Unknown
Minimum Value: Unknown
Resolution: Unknown
Tolerance: Unknown
Accuracy: Unknown
OEM-specific Information: 0x00000000
Handle 0x001F, DMI type 29, 20 bytes
Electrical Current Probe
Description: Electrical Current Probe
Location: Processor
Status: OK
Maximum Value: Unknown
Minimum Value: Unknown
Resolution: Unknown
Tolerance: Unknown
Accuracy: Unknown
OEM-specific Information: 0x00000000
Handle 0x0020, DMI type 30, 6 bytes
Out-of-band Remote Access
Manufacturer Name: Intel
Inbound Connection: Disabled
Outbound Connection: Enabled
Handle 0x0021, DMI type 32, 20 bytes
System Boot Information
Status: <OUT OF SPEC>
Handle 0x0022, DMI type 126, 4 bytes
Inactive
Handle 0x0023, DMI type 127, 4 bytes
End Of Table
