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Pull declaration of variables outside of generate scope

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This ensures that code is compilation clean again. Prior to this change,
the multiplexer was reading from variables that were declared inside of
generate-scopes.

Furthermore, a small bug regarding the dimension detection of registers
was fixed. If a register wasn't multidimensional itself, but its parent
is, the multidimensionalness wasn't detected.
This commit is contained in:
Dennis Potter 2021-06-25 01:20:32 +02:00
parent 3089edc20d
commit ce4782c11d
Signed by: Dennis
GPG Key ID: 186A8AD440942BAF
2 changed files with 81 additions and 56 deletions
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98
srdl2sv/components/regfile.py
View File

@ -31,42 +31,6 @@ class RegFile(Component):
# Save and/or process important variables
self.__process_variables(obj, parents_dimensions, parents_stride)
# Create comment and provide user information about register he/she
# is looking at.
self.rtl_header = [
self.process_yaml(
RegFile.templ_dict['regfile_comment'],
{'name': obj.inst_name,
'dimensions': self.dimensions,
'depth': self.depth}
),
*self.rtl_header
]
# Create generate block for register and add comment
for i in range(self.dimensions-1, -1, -1):
self.rtl_footer.append(
self.process_yaml(
RegFile.templ_dict['generate_for_end'],
{'dimension': chr(97+i)}
)
)
if self.dimensions and not glbl_settings['generate_active']:
self.rtl_header.append("generate")
self.generate_initiated = True
glbl_settings['generate_active'] = True
else:
self.generate_initiated = False
for i in range(self.dimensions):
self.rtl_header.append(
self.process_yaml(
RegFile.templ_dict['generate_for_start'],
{'iterator': chr(97+i+self.parents_depths),
'limit': self.array_dimensions[i]}
)
)
# Empty dictionary of register objects
# We need a dictionary since it might be required to access the objects later
@ -77,6 +41,14 @@ class RegFile(Component):
# Set object to 0 for easy addressing
self.obj.current_idx = [0]
# Determine whether this regfile must add a generate block and for-loop
if self.dimensions and not glbl_settings['generate_active']:
self.generate_initiated = True
glbl_settings['generate_active'] = True
else:
self.generate_initiated = False
# Traverse through children
for child in obj.children():
if isinstance(child, node.AddrmapNode):
@ -115,15 +87,53 @@ class RegFile(Component):
# to account for all possible alias combinations
self.children = {**self.regfiles, **self.registers}
# Create RTL of all registers
[x.create_rtl() for x in self.registers.values()]
self.logger.info("Done generating all child-regfiles/registers")
# If this regfile create a generate-block, all the register's wires must
# be declared outside of that block
if self.generate_initiated:
self.rtl_header = [*self.rtl_header, *self.get_signal_instantiations_list()]
self.rtl_header.append("")
self.rtl_header.append("generate")
# Create comment and provide user information about register he/she
# is looking at.
self.rtl_header = [
self.process_yaml(
RegFile.templ_dict['regfile_comment'],
{'name': obj.inst_name,
'dimensions': self.dimensions,
'depth': self.depth}
),
*self.rtl_header
]
# Create generate block for register and add comment
for i in range(self.dimensions-1, -1, -1):
self.rtl_footer.append(
self.process_yaml(
RegFile.templ_dict['generate_for_end'],
{'dimension': chr(97+i)}
)
)
for i in range(self.dimensions):
self.rtl_header.append(
self.process_yaml(
RegFile.templ_dict['generate_for_start'],
{'iterator': chr(97+i+self.parents_depths),
'limit': self.array_dimensions[i]}
)
)
# End generate loop
if self.generate_initiated:
glbl_settings['generate_active'] = False
self.rtl_footer.append("endgenerate")
# Create RTL of all registers
[x.create_rtl() for x in self.registers.values()]
self.rtl_footer.append("")
def __process_variables(self,
obj: node.RegfileNode,
@ -167,6 +177,16 @@ class RegFile(Component):
for i in self.children.values():
yield from i.create_mux_string()
def get_signal_instantiations_list(self) -> set():
instantiations = list()
for i in self.children.values():
if isinstance(i, Register):
instantiations.append("\n// Variables of register '{}'".format(i.name))
instantiations = [*instantiations, *i.get_signal_instantiations_list()]
return instantiations
def get_package_names(self) -> set():
names = set()

21
srdl2sv/components/register.py
View File

@ -76,6 +76,9 @@ class Register(Component):
self.__add_sw_read_assignments()
# Add wire instantiation
if not self.generate_active:
# We can/should only do this if there is no encapsulating
# regfile which create a generate
self.__add_signal_instantiations()
# Create comment and provide user information about register he/she is looking at
@ -159,7 +162,7 @@ class Register(Component):
# Assign variables from bus
self.obj.current_idx = [0]
if self.dimensions:
if self.total_dimensions:
rw_wire_assign_field = 'rw_wire_assign_multi_dim'
else:
rw_wire_assign_field = 'rw_wire_assign_1_dim'
@ -179,15 +182,20 @@ class Register(Component):
def __add_signal_instantiations(self):
# Add wire/register instantiations
self.rtl_header = [
*self.get_signal_instantiations_list(),
'',
*self.rtl_header
]
def get_signal_instantiations_list(self):
dict_list = [(key, value) for (key, value) in self.get_signals().items()]
signal_width = min(max([len(value[0]) for (_, value) in dict_list]), 40)
name_width = min(max([len(key) for (key, _) in dict_list]), 40)
self.rtl_header = [
*[
Register.templ_dict['signal_declaration'].format(
return [Register.templ_dict['signal_declaration'].format(
name = key,
type = value[0],
signal_width = signal_width,
@ -196,10 +204,7 @@ class Register(Component):
']['.join(
[str(y) for y in value[1]]))
if value[1] else '')
for (key, value) in dict_list],
'',
*self.rtl_header,
]
for (key, value) in dict_list]
def add_alias(self, obj: node.RegNode):
for field in obj.fields():