PASID Extended Capability Header @0x440

The presence of a PASID Extended Capability indicates that the Endpoint supports sending and receiving TLPs containing a PASID TLP Prefix.

Table 1. i_pasid_header_reg
Bits SW Name Description Reset
15:0 R PCI Express Extended Capability ID [PECI] This field is hardwired to the Capability ID assigned by PCI SIG to the PASID Capability. 0x001B
19:16 R Capability Version [CV] Specifies the SIG assigned value for the version of the capability structure. This field is set by default to 1, but can be modified independently for each PF from the local management bus. 0x1
31:20 R Next Capability Offset [NCO] Indicates offset to the next PCI Express capability structure. The default next pointer value is dynamic and is dependent on whether the strap or LMI bits are set. 12'h5c0