公开(公告)号：US20210382839A1

公开(公告)日：2021-12-09

申请号：US17412075

申请日：2021-08-25

Applicant: Intel Corporation

Inventor： Christopher Wing Hong Ngau ,  Hooi Kar Loo ,  Poh Thiam Teoh ,  Shashitheren Kerisnan ,  Maxim Dan ,  Chee Siang Chow

IPC: G06F13/40 ,  H04B10/27 ,  G06F13/42

Abstract: Aspects of the embodiments are directed to systems, methods, and devices for controlling power management entry. A PCIe root port controller can be configured to receive, at a downstream port of the root port controller, from an upstream switch port, a first power management entry request; reject the first power management entry request; transmit a negative acknowledgement message to the upstream switch port; initiate a timer for at least 20 microseconds; during the 20 microseconds, ignore any power management entry requests received from the upstream switch port; receive, after the expiration of the 20 microseconds, a subsequent power management entry request; accept the subsequent power management entry request; and transmit an acknowledgement of the acceptance of the subsequent power management entry request to the upstream switch port.

公开(公告)号：US11132319B2

公开(公告)日：2021-09-28

申请号：US15870679

申请日：2018-01-12

Applicant: Intel Corporation

Inventor： Christopher Wing Hong Ngau ,  Hooi Kar Loo ,  Poh Thiam Teoh ,  Shashitheren Kerisnan ,  Maxim Dan ,  Chee Siang Chow

IPC: G06F1/3234 ,  G06F13/38 ,  G06F13/40 ,  H04B10/27 ,  G06F13/42

Abstract: Aspects of the embodiments are directed to systems, methods, and devices for controlling power management entry. A PCIe root port controller can be configured to receive, at a downstream port of the root port controller, from an upstream switch port, a first power management entry request; reject the first power management entry request; transmit a negative acknowledgement message to the upstream switch port; initiate a timer for at least 20 microseconds; during the 20 microseconds, ignore any power management entry requests received from the upstream switch port; receive, after the expiration of the 20 microseconds, a subsequent power management entry request; accept the subsequent power management entry request; and transmit an acknowledgement of the acceptance of the subsequent power management entry request to the upstream switch port.