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VPATI3
Novice
1,634 Views

Does intel atom support hot plug of PCI devices

Does intel atom support hot plug of PCI devices ?

If so, is there a documentation that describes the feature ?

Use case:

 

we would keep out of reset an FPGA after system boot. That FPGA will be passed to a Linux Container, we would receive the hotplug notification for this event.

Thanks,

Vishal.

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3 Replies
Gabriel_T_Intel
Employee
132 Views

Hello Vishal

Could you tell us please the spec code of your Intel Atom?

Best Regards

Gabriel

VPATI3
Novice
132 Views

Hi Gabriel,

We are using the Intel Atom Processor,C2508 4C 2M Cache.

--

Vishal

Gabriel_T_Intel
Employee
132 Views

Hi Vishal.

Unfortunately PCI Express Hot-Plug events are not supported by the Intel Atom Processor C2508.

Please review this Document, (Doc number 51024) , http://www.intel.com/content/www/us/en/secure/intelligent-systems/privileged/rangeley/soc-external-d... Intel Atom Processor C2000 Product Family for Communications Infrastructure, External Design Specification (EDS), on section 12.2 page 247 " The Hardware-based and card-detect PCIe Hot-Plug is not a supported feature".

In the same document, section 12.5.1 page 258, "The SoC PCI Express * Root Ports do not support the hot-add and hot-removal of PCI Express adapters. The PCIe specification calls this PCI Express Hot-Plug* support. The root ports also do not support the detection of an adapter that has been newly plugged-in (connected) or newly powered-on".

If there is any other question or comment please let us know.

Best regards

Gabriel Thomas

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