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Processor Configuration Registers

258 Datasheet, Volume 2

2.18.30 FRCDH_REG—Fault Recording High Register

This register records fault information when primary fault logging is active. Hardware

reports the number and location of fault recording registers through the Capability

This register is sticky and can be cleared only through power good reset or by software

clearing the RW1C fields by writing a 1.

B/D/F/Type: 0/0/0/GFXVTBAR

Address Offset: 208–20Fh

Reset Value: 0000_0000_0000_0000h

Access: RO, RW1CS, ROS-V

Size: 64 bits

BIOS Optimal Default 0000_0000_0000_0000h

Bit Attr

Reset

Value

RST/

PWR

Description

63 RW1CS 0b

Powerg

ood

Fault (F)

Hardware sets this bit to indicate a fault is logged in this Fault

Recording register. The F field is set by hardware after the details

of the fault is recorded in other fields.

When this bit is set, hardware may collapse additional faults from

the same source-id (SID).

Software writes the value read from this field to clear it.

62 ROS-V 0b

Powerg

ood

Type (T)

Type of the faulted request:

0 = Write request

1 = Read request or AtomicOp request

This field is relevant only when the F field is Set, and when the fault

reason (FR) indicates one of the DMA-remapping fault conditions.

61:60 RO 00b Uncore

Address Type (AT)

This field captures the AT field from the faulted DMA request.

Hardware implementations not supporting Device-IOTLBs (DI field

clear in Extended Capability register) treat this field as RsvdZ.

When supported, this field is valid only when the F bit is set, and

when the fault reason (FR) indicates one of the DMA-remapping

fault conditions.

59:40 RO 0h Reserved

39:32 ROS-V 00h

Powerg

ood

Fault Reason (FR)

This field is relevant only when the F bit is set.

31:16 RO 0h Reserved

15:0 ROS-V

0000000

00b

Powerg

ood

Source Identifier (SID)

Requester-id associated with the fault condition.

This field is relevant only when the F bit is set.

1 2 ... 253 254 255 256 257 258 259 260 261 262 263 ... 299 300

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Intel E3-1275 Fiche technique Page 258

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