公开(公告)号：US10379899B2

公开(公告)日：2019-08-13

申请号：US14944350

申请日：2015-11-18

Applicant: FREESCALE SEMICONDUCTOR, INC.

Inventor： John F. Pillar ,  Michael Kardonik ,  Bernard Marchand ,  Peter W. Newton ,  Mark A. Schellhorn

IPC: G06F9/48 ,  G06F3/06

Abstract: A data processing system can comprise a first module having a workspace and configured to execute a task that can request access to a frame in a system memory, a queue manager configured to store a frame descriptor which identifies the frame in the system memory, and a memory access engine coupled to the first module and the queue manager. The memory access engine copies requested segments of the frame to the workspace and has a working frame unit to store a segment handle identifying a location and size of each requested segment copied to the workspace of the first module. The memory access engine tracks history of a requested segment by updating the working frame unit when the requested segment in the workspace is modified by the executing task.

公开(公告)号：US20170139744A1

公开(公告)日：2017-05-18

申请号：US14944350

申请日：2015-11-18

Applicant: FREESCALE SEMICONDUCTOR, INC.

Inventor： John F. PILLAR ,  Michael Kardonik ,  Bernard Marchand ,  Peter W. Newton ,  Mark A. Schellhorn

IPC: G06F9/48 ,  G06F3/06

CPC classification number: G06F9/4881 ,  G06F3/0604 ,  G06F3/0659 ,  G06F3/0673 ,  G06F9/5016

Abstract: A data processing system can comprise a first module having a workspace and configured to execute a task that can request access to a frame in a system memory, a queue manager configured to store a frame descriptor which identifies the frame in the system memory, and a memory access engine coupled to the first module and the queue manager. The memory access engine copies requested segments of the frame to the workspace and has a working frame unit to store a segment handle identifying a location and size of each requested segment copied to the workspace of the first module. The memory access engine tracks history of a requested segment by updating the working frame unit when the requested segment in the workspace is modified by the executing task.