公开(公告)号：US20240070092A1

公开(公告)日：2024-02-29

申请号：US17822702

申请日：2022-08-26

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Binh Q. Nguyen ,  David F. Heinrich ,  Paul Anthony Kaler

IPC: G06F13/10 ,  G06F13/42

CPC classification number: G06F13/105 ,  G06F13/4221 ,  G06F2213/0026

Abstract: In some examples, a system includes a processor, a management controller; and a programmable device to provide input/output (I/O) expansion emulation to support communication with a plurality of I/O devices of a subsystem coupled to the system, where the programmable device provides a plurality of virtual registers as part of the I/O expansion emulation, the virtual registers associated with respective I/O devices of the plurality of I/O devices. The processor writes a value to a first virtual register of the plurality of virtual registers to trigger an output event relating to a first I/O device of the plurality of I/O devices at the subsystem. The management controller reads the first virtual register and, in response to the value written to the first virtual register, interact with the subsystem to issue the output event relating to the first I/O device at the subsystem.