> > A PH has its own doorbell register and each VHs also has it as well. > > > > The TASK_TAG[7:5] can be used to distinguish the origin of the > > request among VHs and remaining TASK_TAG[4:0] will be used for > > supporting 32 tags. > > > > > > > > Best Regards, > > > > Chanho Park > > Thanks for your reply. > > so you split the "Task Tag" filed byte3 in the UPIU header to two > parts, bit7~bit5 is for the VHs ID, and bit4~bit0 is for the task ID. > but this is not defined in the Spec 2.1. correct? > You're right. For PH, TASK_TAG[7:5] will be set to "0" but a VHID will be used in case of VH. Best Regards, Chanho Park
