bslathi19/cocotbext-axi
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Support overriding allocated region and window types

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This commit is contained in:
Alex Forencich
2021-12-27 17:58:52 -08:00
parent 4f26621e2b
commit 8aab5a7294
1 changed files with 22 additions and 12 deletions
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34
cocotbext/axi/address_space.py
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@@ -33,6 +33,8 @@ class MemoryInterface:
self._parent = parent self._parent = parent
self._size = size self._size = size
self._base = base self._base = base
self.window_type = Window
self.window_pool_type = WindowPool
super().__init__(**kwargs) super().__init__(**kwargs)
@property @property
@@ -125,19 +127,22 @@ class MemoryInterface:
async def write_qword(self, address, data, byteorder='little', **kwargs): async def write_qword(self, address, data, byteorder='little', **kwargs):
await self.write_qwords(address, [data], byteorder, **kwargs) await self.write_qwords(address, [data], byteorder, **kwargs)
def create_window(self, offset, size=None): def create_window(self, offset, size=None, window_type=None):
if not size or size < 0: if not size or size < 0:
size = self.size - offset size = self.size - offset
window_type = window_type or self.window_type or Window
self.check_range(offset, size) self.check_range(offset, size)
return Window(self, offset, size, base=self.get_absolute_address(offset)) return window_type(self, offset, size, base=self.get_absolute_address(offset))
def create_window_pool(self, offset=None, size=None): def create_window_pool(self, offset=None, size=None, window_pool_type=None, window_type=None):
if offset is None: if offset is None:
offset = 0 offset = 0
if size is None: if size is None:
size = self.size - offset size = self.size - offset
window_pool_type = window_pool_type or self.window_pool_type or WindowPool
window_type = window_type or self.window_type
self.check_range(offset, size) self.check_range(offset, size)
return WindowPool(self, offset, size, base=self.get_absolute_address(offset)) return window_pool_type(self, offset, size, base=self.get_absolute_address(offset), window_type=window_type)
def __len__(self): def __len__(self):
return self._size return self._size
@@ -165,12 +170,13 @@ class Window(MemoryInterface):
class WindowPool(Window): class WindowPool(Window):
def __init__(self, parent, offset, size, base=None, **kwargs): def __init__(self, parent, offset, size, base=None, window_type=None, **kwargs):
super().__init__(parent, offset, size, base=base, **kwargs) super().__init__(parent, offset, size, base=base, **kwargs)
self.window_type = window_type or Window
self.allocator = BuddyAllocator(size) self.allocator = BuddyAllocator(size)
def alloc_window(self, size): def alloc_window(self, size, window_type=None):
return self.create_window(self.allocator.alloc(size), size) return self.create_window(self.allocator.alloc(size), size, window_type)
class Region(MemoryInterface): class Region(MemoryInterface):
@@ -231,6 +237,7 @@ class PeripheralRegion(Region):
class AddressSpace(Region): class AddressSpace(Region):
def __init__(self, size=2**64, base=0, parent=None, **kwargs): def __init__(self, size=2**64, base=0, parent=None, **kwargs):
super().__init__(size=size, base=base, parent=parent, **kwargs) super().__init__(size=size, base=base, parent=parent, **kwargs)
self.pool_type = Pool
self.regions = [] self.regions = []
def find_regions(self, address, length=1): def find_regions(self, address, length=1):
@@ -299,24 +306,27 @@ class AddressSpace(Region):
if length > 0: if length > 0:
raise Exception("Invalid address") raise Exception("Invalid address")
def create_pool(self, base=None, size=None): def create_pool(self, base=None, size=None, pool_type=None, region_type=None):
if base is None: if base is None:
base = 0 base = 0
if size is None: if size is None:
size = self.size - base size = self.size - base
pool_type = pool_type or self.pool_type or Pool
self.check_range(base, size) self.check_range(base, size)
pool = Pool(self, base, size) pool = pool_type(self, base, size, region_type=region_type)
self.register_region(pool, base, size) self.register_region(pool, base, size)
return pool return pool
class Pool(AddressSpace): class Pool(AddressSpace):
def __init__(self, parent, base, size, **kwargs): def __init__(self, parent, base, size, region_type=None, **kwargs):
super().__init__(parent=parent, base=base, size=size, **kwargs) super().__init__(parent=parent, base=base, size=size, **kwargs)
self.region_type = region_type or MemoryRegion
self.allocator = BuddyAllocator(size) self.allocator = BuddyAllocator(size)
def alloc_region(self, size): def alloc_region(self, size, region_type=None):
region_type = region_type or self.region_type or MemoryRegion
base = self.allocator.alloc(size) base = self.allocator.alloc(size)
region = MemoryRegion(size) region = region_type(size)
self.register_region(region, base) self.register_region(region, base)
return region return region