Re: OS-A PCIe Questions
On Thu, Dec 30, 2021 at 3:37 AM Michael Klinglesmith <michael.klinglesmith@...> wrote:
The intention behind requiring intx was to ensure better compatibility. There are few cases where we fallback to INTx if MSI is not available. For e.g:
But if such cases are considered to be rare and not required to be supported then this requirement can be removed.
AFAIK, these are two separate attributes and a requester could set either or both of them. I am not sure if we can link the two together. Please correct me if I am wrong but does it mean that ,for e.g, all the mem write requests which may have the NS attribute set must also have the RO attribute set?
Actually the requirement is to support atleast one of them ie RCiEP (+RCEC) or Root port but an RC can certainly support both.