Is there a way for CvP over PCIe to do CvP update?

​Hi, we just found that on page 6 of the "Intel® Stratix® 10 Configuration via Protocol (CvP) Implementation User Guide" (ug-s10-cvp-18-0.pdf), the Cvp Update is supported on Stratix 10 devices, so would like to request that Intel answers the following two questions:

1. Would Intel please confirm that Stratix 10 does support CvP Update?
2. If Status 10 does support CvP Update, why can Arria 10 not support CvP Update?

The reason to ask the above questions is that it is confusing why Stratix 10 supports CvP Update but Arria 10 does not and even there is no plan for future Arria 10 to support CvP Update. Are they using different PCIe IP from different third party developers?

Thanks

​Hi,

By reading thru the ug-s10-cvp.pdf, it appears that the Stratix 10's so-called CvP Update is very similar to Arria 10's Partial Reconfiugation in the way that it requres physically partitioning and locking a region, in this case, the so-called "core region". The only difference is that it appears that it does not require manually instantiating PR controller and PR region controller. The true CvP Update mode that existed in eariler devices that does not require physically partioning and locking any region no longer exist in Stratix 10. Can Intel clarify what is going with Stratix 10's CvP Update? If the ug-s10-cvp.pdf is correct, the Stratix 10's CvP Update mode is not as robust or flexible as Arria 10's Partial Reconfuration that allows precise control of start and stop of PR and as well as multi-region PR. In Intel's product road map, except device size, is Arria 10 more advanced in Intel's device development (it looks like Arria 10's PR is more advanced that Stratix 10's CvP Update that is a shrunk version of PR)? Does Stratix 10 support Partial Reconfiguraton (essentially the question may be equivalent to "Does Stratix 10 have PR controller and PR region controller)? Thanks.

​Hi, is there any plan that the true CvP Update (does not require physically partitioning and locking a region for the entire core design) will be available to Stratix 10 in the near future? The reason to ask this is that the CvP Update in Stratix 10 today is equivalent to PR when PR split the periphery and core design so that the periphery becomes a static region and the core design becomes a persona, which means that CvP Update of Statix 10 is essentially one of many ways of PR. Thanks.

​Hi, it is understood that both V and 10 series require logic partition between periphery and core. But the V series document ug_cvp.pdf never mentions a requirement to physically partition and lock the core region. The main disadvantage of the Stratix 10's CvP is that it requires physically partition and lock the core region (aka, place and route). Unless the V series ug_cvp.pdf document is incorrect, the CvP Updates between V series and 10 series are different. V series CvP Update is similar to CvP Initialization while 10 series CvP Update is actually a subset of PR. Looks like even though V series document clearly states that CvP Update feature will be gone, another Intel team developing 10 series mistakenly used the term CvP Update for what is actually a PR with automatic (transparent) insertion of PR controllers and with limitation of what the "persona" should be.

​Yes, but these 2 partitions are only logic partitions. The ug_cvp.pdf never mentions any physical partition requirement, which is a big difference. That said, if ug_cvp.pdf document is defective in the way that it mistakenly omits the physical partition requirement, then Intel may have never supported true CvP Update. What is documented in ug_s10_cvp.pdf is the same as the PR thru PCIe in Arria 10 except that s10 does not require insertion of PR controllers, both requires physical partition, which is bad.