Cache management using shared cache line storage
US-2024241830-A1 · Jul 18, 2024 · US
Coherency controller and method for data hazard handling for copending data access requests
US8949547B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8949547-B2 |
| Application number | US-201113137356-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 8, 2011 |
| Priority date | Aug 8, 2011 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A data processing system that manages data hazards at a coherency controller and not at an initiator device is disclosed. Write requests are processed in a two part form, such that a first part is transmitted and when the coherency controller has space to accept data, the data and a state of the data prior to a write are sent as a second part of a write request. When there are copending reads and writes to the same address, writes are stalled by not responding to the first part of a write request and snoop requests received to the address are processed regardless of the fact that the write is pending. When the pending read has completed, the coherency controller will respond to the first part of the write request and the initiator device will complete the write by sending the data and a state indicator following the snoop.
First claim
Opening claim text (preview).
We claim: 1. A coherency controller for maintaining data coherency of data stored in a data processing apparatus comprising at least one initiator device and at least one recipient device, said coherency controller comprising: at least one port for receiving data access requests from said at least one initiator device and for transmitting said data access requests and snoop requests to at least one of said at least one initiator device and said at least one recipient device; a b…
Assignees
Inventors
Classifications
- G06F12/0828Primary
Physics · mapped topic
- G06F12/0831Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US8949547B2 cover?
- A data processing system that manages data hazards at a coherency controller and not at an initiator device is disclosed. Write requests are processed in a two part form, such that a first part is transmitted and when the coherency controller has space to accept data, the data and a state of the data prior to a write are sent as a second part of a write request. When there are copending reads a…
- Who is the assignee on this patent?
- Mannava Phanindra Kumar, Jalal Jamshed, Prasadh Ramamoorthy Guru, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification G06F12/0828. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).