When we looked at requirements for UVM in Accellera, one of the highest priority requests from users was to have a single standard Register Modeling Package. After much discussion in the committee, Mentor and Synopsys worked together to create the UVM Register package, which was subsequently adopted as part of UVM.<\/p>\n
In developing the UVM register layer, we combined the VMM RAL data model with a sequence-based API that lets you write UVM sequences in terms of register read\/write transactions, independent of the specific address or bus protocol implemented on the desired interface. The collaboration was productive and efficient and gave UVM a head start in addressing a substantial installed base of register users while keeping a consistent use model for OVM-savvy users as they consider moving to UVM.<\/p>\n
So we asked ourselves, if having a standard register package is so important, why not make it available to OVM users without requiring them to move everything else to UVM? Our answer was to release a UVM Register package that does, in fact, work with OVM 2.1.2. As it says in the Release Notes, “This package is a near verbatim copy of the register layer portion of the Accellera Universal Verification Methodology (UVM 1.1) reference library. Minor additions and modifications\u00a0 were made to enable its use as a standalone package and be compatible\u00a0 with OVM 2.1.2. ” Having this register package means that OVM users now have a standard, robust and vendor-independent register solution that will not require rewrites or use-model changes if\/when they decide to migrate to UVM.<\/p>\n
To use the UVM Register package with OVM, you’ll need to import the uvm_reg_pkg and include the uvm_reg_macros.svh file:<\/p>\n
\n`include \"ovm_macros.svh\"\n`include \"uvm_reg_macros.svh\"\npackage my_reg_model;\n import ovm_pkg::*;\n import uvm_reg_pkg::*;\n ...\nendpackage<\/pre>\n<\/blockquote>\nThat’s it! If you’re using a code generator that creates UVM register code directly, you can use that code as-is with the UVM Register Package and OVM2.1.2, with the minor caveat of requiring the import and include statements mentioned above.<\/p>\n