The MSI-X Capabilities parameters, shown in the following figure, are available in Advanced mode only. To enable MSI-X capabilities, select Advanced mode, and select the required options on the Capabilities page.
Figure 1. MSI-X Cap Tab, Advanced Mode
- Enable MSI-X
- Indicates that the MSI-X Capabilities structure exists.Note: The Capability Structure needs at least one Memory BAR to be configured. You must maintain the MSI-X Table and Pending Bit Array in the application.
- MSI-X Table Settings
- Defines the MSI-X Table structure.
- Table Size
- Specifies the MSI-X Table size. Table Size field is expecting N-1 interrupts (0x0F configures a table count of 16).
- Table Offset
- Specifies the offset from the Base Address Register that points to the base of the MSI-X Table.
- BAR Indicator
- Indicates the Base Address Register in the Configuration Space used to map the function in the MSI-X Table onto memory space. For a 64-bit Base Address Register, this indicates the lower DWORD.
- MSIx Pending Bit Array (PBA) Settings
- Defines the MSI-X Pending Bit Array (PBA) structure.
- PBA Offset
- Specifies the offset from the Base Address Register that points to the base of the MSI-X PBA.
- PBA BAR Indicator
- Indicates the Base Address Register in the Configuration Space used to map the function in the MSI-X PBA onto Memory Space.