| Bit Index | Default | Access Type | Field | Description |
|---|---|---|---|---|
| [31:3] | 0 | NA | Reserved | Reserved |
| [2] | 0 | RO | Reserved | Reserved |
| [1] | 0 | RW | msg_rcv | For VF: VF marks the message in its Incoming
Mailbox Memory as received. The hardware asserts the acknowledgement
bit of the associated PF. For PF: PF marks the message send by target_fn as received. The hardware refreshes the i_msg_status of the PF, and clears the o_msg_status of the target_fn. |
| [0] | 0 | RW | msg_send | For VF: VF marks the current message in its own Outgoing Mailbox as
valid. For PF: Current target_fn_id belongs to a VF: PF finished writing a message into the Incoming Mailbox memory of the VF with target_fn_id. The hardware sets the i_msg_status field of the target FN's status register. Current target_fn_id belongs to a PF: PF finished writing a message into its own outgoing Mailbox memory. The hardware pushes the message to the event queue of the PF with target_fn_id. |