Broadcom has been granted a patent for a method to expose PCIe configuration space implementations as ECAM-compatible. The technology involves identifying bridge and endpoint devices, assigning synthetic identifiers to buses, and generating address data for endpoint devices, regardless of their position in the PCIe hierarchy. GlobalData’s report on Broadcom gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Broadcom, Digital watermarking was a key innovation area identified from patents. Broadcom's grant share as of April 2024 was 77%. Grant share is based on the ratio of number of grants to total number of patents.

Pcie configuration space as ecam-compatible

Source: United States Patent and Trademark Office (USPTO). Credit: Broadcom Inc

A recently granted patent (Publication Number: US11971839B2) discloses a computer-readable medium containing machine-readable instructions that, when executed by a processor, enable a computing device to identify a bridge device on a segment corresponding to a root complex, detect an endpoint device connected downstream from the bridge device, assign a synthetic segment identifier to the bus based on the connected endpoint device, and generate synthetic address data. This innovation sets the bus identifier to zero, irrespective of its hierarchical position in a standard PCIe bus hierarchy. The patent also covers loading ACPI data into memory, accessing the endpoint device based on the ACPI data, marking the bridge device as disabled in the ACPI data, and addressing filtering or granule size issues that may cause erroneous responses from the endpoint device.

Furthermore, the patent extends to a system comprising a computing device with a processor and memory containing machine-readable instructions to perform the functions described above. The system can load ACPI data, access the endpoint device, mark the bridge device as disabled, and address filtering or granule size problems. Additionally, a method is outlined in the patent, involving firmware instructions executed by a processor to identify the bridge device, detect the endpoint device, assign a synthetic segment identifier, generate synthetic address data, and set the bus identifier to zero. The method also includes loading ACPI data, accessing the endpoint device, marking the bridge device as disabled, and addressing filtering or granule size issues that may affect the endpoint device's response to device identifiers. This patent showcases advancements in computing device functionality and address potential issues in device communication within a system.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.