31:30

0h

RO

Reserved

29

0h

RW/L

WQ Privilege (PRIV)

The Priv flag to be used for descriptors submitted to this WQ when it is in dedicated mode.If the WQ is in dedicated mode, WQ PASID Enable is 1, and the Privileged Mode Enable field of the PCI Express PASID capability is 0, this field must be 0.If the WQ is in shared mode or WQ PASID Enable is 0, this field is ignored.

28

0h

RW/L

WQ PASID Enable (PASIDEN)

Indicates whether PASID is used for address translation requests for descriptors from this WQ.If the PCI Express PASID capability is not enabled, this field must be 0.If WQ Mode is 0 (SWQ), this field must be 1.

27:8

0h

RW/L

WQ PASID (PASID)

The PASID to be used for descriptors submitted to this WQ when it is in dedicated mode. If the WQ is in shared mode or WQ PASID Enable is 0, this field is ignored.

7:4

0h

RW/L

WQ Priority (PRIOR)

If the WQ Priority Support field in WQCAP is 1, this field indicates the priority of this work queue relative to other WQs in the same group. This field must not be 0. See #341204 section 4.1 for a description of WQ priorities. If the WQ Priority Support field in WQCAP is 0, this field is ignored.

3

0h

RW/L

WQ PRS Disable (PRSDIS)

0: PRS is used for descriptors submitted to this WQ according to the setting of the Enable field in the PCIe PRS capability, the WQ Block on Fault Enable field, and the Block on Fault flag in the descriptor.
1: PRS is not used for descriptors submitted to this WQ even when the Enable field in the PCIe PRS capability is 1. The WQ Block on Fault Enable field must be 0.
If WQ PRS Support is 0, this field is reserved and may be hardwired to 0.
If Event Log Enable in GENCFG is 0, this field must be 0.

2

0h

RW/L

WQ ATS Disable (ATSDIS)

0: ATS is used for descriptors submitted to this WQ according to the setting of the Enable field in the PCIe ATS capability.
1: ATS is not used for descriptors submitted to this WQ even when the Enable field in the PCIe ATS capability is 1.
If WQ ATS Support is 0, this field is reserved and may be hardwired to 0.

1

0h

RW/L

WQ Block on Fault (BOF)

0: Block on fault is not allowed. The Block On Fault flag in descriptors submitted to this WQ is reserved. If a page fault occurs on a source or destination memory access, the operation stops and the page fault is reported to software.
1: Block on fault is allowed. Behavior on page faults depends on the values of the Block on Fault flag in each descriptor.
This field is reserved if the Block on Fault Support field in GENCAP is 0 or if the Enable field of the PCIe Page Request Control Register is 0.

0

0h

RW/L

WQ Mode (MODE)

0: WQ is in shared mode.
1: WQ is in dedicated mode.