Intel B940 Datasheet Page 265

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Datasheet, Volume 2 265
Processor Configuration Registers
27 RO 0b
Write Buffer Flush Status (WBFS)
This field is valid only for implementations requiring write buffer flushing.
This field indicates the status of the write buffer flush command. It is
Set by hardware when software sets the WBF field in the Global Command
register.
Cleared by hardware when hardware completes the write buffer flushing
operation.
26 RO 0b
Queued Invalidation Enable Status (QIES)
This field indicates queued invalidation enable status.
0 = Queued invalidation is not enabled
1 = Queued invalidation is enabled
25 RO 0b
Interrupt Remapping Enable Status (IRES)
This field indicates the status of Interrupt-remapping hardware.
0 = Interrupt-remapping hardware is not enabled
1 = Interrupt-remapping hardware is enabled
24 RO 0b
Interrupt Remapping Table Pointer Status (IRTPS)
This field indicates the status of the interrupt remapping table pointer in
hardware.
This field is cleared by hardware when software sets the SIRTP field in the
Global Command register.
This field is set by hardware when hardware completes the set interrupt
remap table pointer operation using the value provided in the Interrupt
Remapping Table Address register.
23 RO 0b
Compatibility Format Interrupt Status (CIFS)
This field indicates the status of Compatibility format interrupts on Intel 64
implementations supporting interrupt-remapping. The value reported in this
field is applicable only when interrupt-remapping is enabled and Legacy
interrupt mode is active.
0 = Compatibility format interrupts are blocked.
1 = Compatibility format interrupts are processed as pass-through
(bypassing interrupt remapping).
22:0 RO 000000h Reserved
B/D/F/Type: 0/2/0/GFXVTBAR
Address Offset: 1C–1Fh
Reset Value: 00000000h
Access: RO
Bit Attr
Reset
Value
Description
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