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agula's avatar
agula
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

Stratix 10 PCIe SR-IOV

Hi All, I am using the PCIe SR-IOV IP for Stratix 10. I see that Virtual Functions default to a Maximum Read Request and Max Payload Size of 128B. Is this a limitation of the actual specification ?...
SengKok_L_Intel's avatar
SengKok_L_Intel
Icon for Regular Contributor rankRegular Contributor
5 years ago

Hi,

The Max. Payload size and Max. Read Request Size is configurable via the "Control and Status Registers".

Regards -SK

agula's avatar
agula
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

Table 71 shows that VF Control and Status Registers and it does not show anything regarding Max Payload Size or Max Read Request Size.

The PF control and status registers have these parameters, but the VF does not inherit them. They default to 128B.