Intel SE7501WV2 User Manual

The following table defines the data byte formats for PCI bus-related errors logged by the BIOS. 

Generator ID 

7:1  System software ID or IPMB slave 

address. 1=ID is system software ID; 
0=ID is IPMB slave address. 

7:4  0x3 for system BIOS 
3:1 
 

0  Format revision, Revision of the data format for 
OEM data bytes 2 and 3, For this revision of the 
specification, set this field to 0. All other revisions are 
reserved for now. 

 

0  1=ID is system software ID 

As a result, the generator ID byte will start from 0x31 and 
go up to 0x3f, in increments of 2 for events logged by the 
BIOS.  

Sensor Type 

See Table 34.3, Sensor Type Codes, in the 
Intelligent Management Platform Interface 
Specification v1.5.  

0x13 for critical interrupt 

Sensor number  Number of sensor that generated this event 

Unique value for each type of event because IPMI 
specification requires it that way. This field has no other 
significance. Should not be displayed to the end user if the 
event is logged by BIOS. For PERRs, the sensor number 
is 0xEA, for SERRs, the sensor number is 0xEB. 

Type code 

0x6F if event offsets are specific to the sensor 

0x6F 

Event Data 1 

7:6  00 = unspecified byte 2 
 

10 = OEM code in byte 2 

5:4   00 = unspecified byte 3 
 

10 = OEM code in byte 3. (BIOS will not 
use encodings 01 and 11 for errors 
covered by this document.) 

3:0  Offset from Event Trigger for discrete 

event state.  

Follows the IPMI definition.  
If either of the two data bytes following this do not have 
any data, that byte should be set to 0xff, and the 
appropriate filed in event data 1 should indicate that that it 
is unspecified. 
According to Table 30.3 in the Intelligent Management 
Platform Interface Specification, 3:0 is 04 for PCI PERR 
and 05 for PCI SERR. 

Event Data 2 

7:0 OEM code 2 or unspecified 

For format rev 0, if this byte is specified, it contains the 
PCI bus number on which the failing device resides. If the 
source of the PCI error cannot be determined, this byte 
contains 0xff and the event data 1 byte indicates that byte 
2 is unspecified. 

Event Data 3 

7:0 OEM code 3 or unspecified. 

For format rev 0, if this byte is specified, it contains the 
PCI device/function address in the standard format:  
7:3  Device number of the failing PCI device 
2:0  PCI function number. Will always contain a zero if the 

device is not a multifunction device. 

If the source of the PCI error cannot be determined, this 
byte contains 0xff and the event data 1 byte indicates that 
byte 3 is unspecified.