公开(公告)号：US12169457B2

公开(公告)日：2024-12-17

申请号：US18047803

申请日：2022-10-19

Applicant: Shanghai Zhaoxin Semiconductor Co., Ltd.

Inventor： Yang Jiao ,  Qunyi Yang ,  Jin Xiang ,  Xinglin Gui ,  Tingli Cui

IPC: G06F12/10

Abstract: An electronic device includes remapping hardware, a processor, and a Northbridge IC. The remapping hardware converts a virtual address included in an unconverted DMA request into a physical address. The processor executes software to configure the remapping hardware. The Northbridge IC sends the physical address to the processor. When the software changes the configuration of the remapping hardware, the remapping hardware outputs a data draining request to the Northbridge IC. When the Northbridge IC receives the data draining request at a first time, the Northbridge IC suspends unconverted DMA requests after the first time until a second time, and outputs a first data draining response to the remapping hardware at the second time. The remapping hardware receives the first data draining response and notifies the processor that the data draining request has been completed.

公开(公告)号：US12105633B2

公开(公告)日：2024-10-01

申请号：US18047791

申请日：2022-10-19

Applicant: Shanghai Zhaoxin Semiconductor Co., Ltd.

Inventor： Qunyi Yang ,  Yang Jiao ,  Jin Xiang ,  Tingli Cui ,  Xinglin Gui

IPC: G06F12/0862 ,  G06F12/0882

CPC classification number: G06F12/0882 ,  G06F12/0862 ,  G06F2212/7201

Abstract: An electronic device is provided. The electronic device includes a memory and an integrated circuit. The integrated circuit includes an address remapping unit. The memory includes multiple memory pages. The integrated circuit converts multiple virtual addresses into multiple physical addresses in sequence. The address remapping unit prefetches a first physical address corresponding to a first virtual address if a second virtual address exceeds a preset offset. The first virtual address is in a different memory page from the second virtual address. The second virtual address is currently processed. The multiple virtual addresses include the first and second virtual addresses.