Datasheet

Processor Configuration Registers
112 Datasheet, Volume 2
2.6.36 DCTL—Device Control Register
This register provides control for PCI Express* device specific capabilities.
The error reporting enable bits are in reference to errors detected by this device, not
error messages received across the link. The reporting of error messages (ERR_CORR,
ERR_NONFATAL, ERR_FATAL) received by Root Port is controlled exclusively by Root
Port Command Register.
B/D/F/Type: 0/1/0–2/PCI
Address Offset: A8–A9h
Reset Value: 0020h
Access: RO, RW
Size: 16 bits
BIOS Optimal Default 0h
Bit Access
Reset
Value
RST/
PWR
Description
15 RO 0h Reserved (RSVD)
14:12 RO 000b Uncore Reserved for Max Read Request Size (MRRS)
11 RO 0b Uncore Reserved for Enable No Snoop (NSE)
10:5 RO 0h Reserved (RSVD)
4RO 0bUncoreReserved for Enable Relaxed Ordering (ROE)
3RW 0bUncore
Unsupported Request Reporting Enable (URRE)
When set, this bit allows signaling ERR_NONFATAL, ERR_FATAL,
or ERR_CORR to the Root Control register when detecting an
unmasked Unsupported Request (UR). An ERR_CORR is signaled
when an unmasked Advisory Non-Fatal UR is received. An
ERR_FATAL or ERR_NONFATAL is sent to the Root Control register
when an uncorrectable non-Advisory UR is received with the
severity bit set in the Uncorrectable Error Severity register.
2RW 0bUncore
Fatal Error Reporting Enable (FERE)
When set, this bit enables signaling of ERR_FATAL to the Root
Control register due to internally detected errors or error
messages received across the link. Other bits also control the full
scope of related error reporting.
1RW 0bUncore
Non-Fatal Error Reporting Enable (NERE)
When set, this bit enables signaling of ERR_NONFATAL to the
Root Control register due to internally detected errors or error
messages received across the link. Other bits also control the full
scope of related error reporting.
0RW 0bUncore
Correctable Error Reporting Enable (CERE)
When set, this bit enables signaling of ERR_CORR to the Root
Control register due to internally detected errors or error
messages received across the link. Other bits also control the full
scope of related error reporting.