Sub_block base_address override? - origen-sdk

Question

Is there a way to assign a different base_address to the sub_blocks of a sub_block?
I have a case where I have something like this:
dut.rb:
sub_block ipBlock base_address: 0x11000000
and so the registers at this level all start with 0x110000000
But ipBlock also has its own sub_blocks:
ipblock.rb:
sub_block subIPBlock base_address: 0x0
with its own registers that due to an interface difference require a 0 base_address.
Unfortunately, when I add registers to subIPBlock they still have the base address of the top-level ipBlock:
sub_ipblock.rb:
add_reg :reg0, 0x0, 16, reset: 0xFFFF ...
Is there is a way to easily reassign the base address of the sub_block of a sub_block?

Answer 1

I believe you can use sub-block domains to achieve what you want.
sub_block :subx2, class_name: "SubX", base_address: { ips: 0x2000_0000, ahb: 0x3000_0000 }
dut.subx1.reg1.address(domain: :ips) # => 0x2000_0200
dut.subx1.reg1.address(domain: :ahb) # => 0x3000_0200
regards

Answer 2

In addition to the other answer, also note that reg.offset will return the block relative address, which it sounds like you want here.
All Origen drivers should override the register's address when an :address option is given, so within your model you could implement a read/write register method to add an :address option:
def write_register(reg, options = {})
if your_criteria_to_use_local_address
options[:address] = reg.offset
end
dut.write_register(reg, options) # Handover for original write
end
You could also force/override the base address within your model by implementing the following method:
def reg_base_address(options = {})
0
end
Finally, note that when using the domains per #rchitect-of-info's answer, you can define two domains when you instantiate a parent sub-block, then when you instantiate a child of that sub-block you can pick which of the available domains it is assigned to.
See this example from the documentation linked to in the other answer:
$dut.subx2.suby1.reg1.address # => 0x2000_0300
$dut.subx2.suby2.reg1.address # => 0x3000_0300