bslathi19/PeakRDL-regblock
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Implement write buffering (#22)

Browse Source
This commit is contained in:
Alex Mykyta
2022-10-24 21:49:47 -07:00
parent 808067fac9
commit 279a3c5788
29 changed files with 968 additions and 93 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
src/peakrdl_regblock/udps.py
View File

@@ -3,7 +3,8 @@ from typing import Any
from systemrdl.udp import UDPDefinition
from systemrdl.component import Reg
from systemrdl.rdltypes.references import RefType, PropertyReference
from systemrdl.node import Node, RegNode, VectorNode
from systemrdl.rdltypes import NoValue
from systemrdl.node import Node, RegNode, VectorNode, SignalNode
class xBufferTrigger(UDPDefinition):
@@ -13,7 +14,12 @@ class xBufferTrigger(UDPDefinition):
def validate(self, node: Node, value: Any) -> None:
# TODO: Reference shall not cross an internal/external boundary
if isinstance(value, VectorNode):
if value is NoValue:
self.msg.error(
"Double-buffer trigger property is missing a value assignment",
self.get_src_ref(node)
)
elif isinstance(value, VectorNode):
# Trigger can reference a vector, but only if it is a single-bit
if value.width != 1:
self.msg.error(
@@ -24,6 +30,14 @@ class xBufferTrigger(UDPDefinition):
),
self.get_src_ref(node)
)
if isinstance(value, SignalNode):
if not value.get_property('activehigh') and not value.get_property('activelow'):
self.msg.error(
"Trigger was asigned a signal, but it does not specify whether it is activehigh/activelow",
self.get_src_ref(node)
)
elif isinstance(value, PropertyReference) and value.width is not None:
# Trigger can reference a property, but only if it is a single-bit
if value.width != 1:
@@ -54,7 +68,6 @@ class BufferWrites(UDPDefinition):
name = "buffer_writes"
valid_components = {Reg}
valid_type = bool
default_assignment = True
def validate(self, node: 'Node', value: Any) -> None:
assert isinstance(node, RegNode)
@@ -64,7 +77,6 @@ class BufferWrites(UDPDefinition):
"'buffer_writes' is set to true, but this register does not contain any writable fields.",
self.get_src_ref(node)
)
# TODO: Should I limit the use of other properties on double-buffered registers?
def get_unassigned_default(self, node: 'Node') -> Any:
return False
@@ -84,7 +96,6 @@ class BufferReads(UDPDefinition):
name = "buffer_reads"
valid_components = {Reg}
valid_type = bool
default_assignment = True
def validate(self, node: 'Node', value: Any) -> None:
assert isinstance(node, RegNode)
@@ -95,8 +106,6 @@ class BufferReads(UDPDefinition):
self.get_src_ref(node)
)
# TODO: Should I limit the use of other properties on double-buffered registers?
def get_unassigned_default(self, node: 'Node') -> Any:
return False