31

0h

RW

MSIX Enable (MSIX_​ENABLE)

If 1 and MSI Enable From MSI Control register is 0, then the function is permitted to use MSI-X service. System SW sets this bit to enable MSI-X
If 0, the function is prohibited from using MSI-X service.

30

0h

RW

Function Mask (FUNCTION_​MASK)

If 1, all of the vectors associated with the function are masked, regardless of per-vector mask bit
If 0, each vectors mask bit determines whether the vector is masked or not.

29:27

0h

RO

Reserved

26:16

0h

RO

Table Size (TABLE_​SZ)

System SW reads this value to determine MSIX table size N, which encoded as N-1.

15:8

0h

RO

Next Pointer (MSIX_​NXT_​PTR)

Next Capability Pointer

7:0

11h

RO

Capability ID (MSIX_​CAP_​ID)

MSIX Capability ID