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Remove blocked grids from pins and secondary grids

This commit is contained in:
Matt Guthaus 2018-10-30 16:52:11 -07:00
parent 1344a8f7f1
commit 7099ee76e9
2 changed files with 18 additions and 4 deletions
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19
compiler/router/pin_group.py
View File

@ -106,8 +106,9 @@ class pin_group:
continue
for index2,pin2 in enumerate(pin_list):
# Can't contain yourself
if pin1 == pin2:
# Can't contain yourself, but compare the indices and not the pins
# so you can remove duplicate copies.
if index1==index2:
continue
# If we already removed it, can't remove it again...
if index2 in remove_indices:
@ -420,7 +421,19 @@ class pin_group:
# Blockages will be a super-set of pins since it uses the inflated pin shape.
blockage_in_tracks = router.convert_blockage(pin)
blockage_set.update(blockage_in_tracks)
# If we have a blockage, we must remove the grids
# Remember, this excludes the pin blockages already
shared_set = pin_set & router.blocked_grids
if len(shared_set)>0:
debug.info(2,"Removing pins {}".format(shared_set))
pin_set.difference_update(router.blocked_grids)
shared_set = blockage_set & router.blocked_grids
if len(shared_set)>0:
debug.info(2,"Removing blocks {}".format(shared_set))
blockage_set.difference_update(router.blocked_grids)
# At least one of the groups must have some valid tracks
if (len(pin_set)==0 and len(blockage_set)==0):
self.write_debug_gds("blocked_pin.gds")

3
compiler/router/router.py
View File

@ -135,7 +135,8 @@ class router(router_tech):
Find the pins and blockages in the design
"""
# This finds the pin shapes and sorts them into "groups" that are connected
# This must come before the blockages, so we can ignore metal shapes that are blockages.
# This must come before the blockages, so we can not count the pins themselves
# as blockages.
for pin in pin_list:
self.find_pins(pin)