Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
| ID | Date | Version | Classification |
|---|---|---|---|
| 615146 | 08/09/2019 | 1.2 | Public |
MSI Message Control, Next Pointer And Capability ID (IDE_HOST_MSIMC_MSINP_MSICID) – Offset 40
This register contains the MSI message control, next pointer And capability ID values.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 30:25 | - | - | Reserved
|
| 24 | 0b | RO | Per Vector Masking Capable (PVMC) Not implemented. Hardwired to 0 to indicate the function does NOT support |
| 23 | 1b | RO | 64 Bit Address Capable (XAC) Hardwired to 1 to indicate the function is capable of |
| 22:20 | 000b | RW | Multiple Message Enable (MMEN) Encoded number of interrupt vectors allocated by SW. |
| 19:17 | 000b | RO | Multiple Message Capable (MMC) Encoded number of interrupt vectors requested by a device. |
| 16 | 0b | RW | MSI Enable (MSIE) If set, MSI interrupt delivery is enabled whereas pin-based interrupt delivery SHALL be disabled. |
| 15:8 | 50h | RO | Next Item Pointer (NP) Indicates the pointer for the next entry in the capabilities list. |
| 7:0 | 05h | RO | Capability ID (CID) Hardwired to 05h to indicate the linked list item as the MSI Capability registers |