Currently, the TCP format does not include any commands to manually set intrasite routing. This information was not previously included for the following reasons:
Vivado crashes when you set the SITE_PIPS property for IOB33 sites (in addition to setting the PACKAGE_PIN property). A service request was sent to Vivado, but this bug still occurs at least as of version 2017.3.
Vivado is able to set a valid intrasite configuration automatically for sites based on the first wire used in an intersite route in conjunction with the other cells/nets in a site.
Adding intrasite routing information to a TCP may increase import time.
However, the need to manually set intrasite routing can still come up in some scenarios. I have created a branch that includes code that creates the necessary TCL commands to set the intrasite routing for sites in the routing.xdc. This relies on the pipInValues data structure in CellDesign.
I have already been using this code, but we need to do some more tests (make sure no other site types cause Vivado to crash, etc.), possibly add a couple of helper methods, and update the documentation before integrating this into the master branch.
DallonTG
commented
5 years ago
Currently, the TCP format does not include any commands to manually set intrasite routing. This information was not previously included for the following reasons:
Vivado crashes when you set the SITE_PIPS property for IOB33 sites (in addition to setting the PACKAGE_PIN property). A service request was sent to Vivado, but this bug still occurs at least as of version 2017.3.
Vivado is able to set a valid intrasite configuration automatically for sites based on the first wire used in an intersite route in conjunction with the other cells/nets in a site.
Adding intrasite routing information to a TCP may increase import time.
However, the need to manually set intrasite routing can still come up in some scenarios. I have created a branch that includes code that creates the necessary TCL commands to set the intrasite routing for sites in the routing.xdc. This relies on the pipInValues data structure in CellDesign.
I have already been using this code, but we need to do some more tests (make sure no other site types cause Vivado to crash, etc.), possibly add a couple of helper methods, and update the documentation before integrating this into the master branch.