On 2/21/2017 9:37 PM, Sinan Kaya wrote: >> SR-IOV spec rev 1.1, 3.4.1.1 & 3.4.1.2, Vendor ID and Device ID fields >> for the VF return 0xFFFF when read. The "Virtualization Intermediary" >> is supposed to use the vendor ID from the PF and the device ID defined >> in the PF SR-IOV capability. > > Interesting. Since lspci was showing the correct vendor id and device id, I > assumed that it is coming from offset 0. > > Maybe, the right thing is to figure out if this is a virtual function or not. > If it is a physical function, check the CRS first before reading the command > register in the existing loop. > > I went back and read the spec for CRS in FLR case one more time. We are required to wait up to 1 seconds if the device is sending CRS. The current code seems to be already handling this delay. -- Sinan Kaya Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.
