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360 Commits

Author SHA1 Message Date
mrg 79391b84da Cleanup and rename vias. 2020-01-30 01:45:33 +00:00
Bastian Koppelmann 9749c522d1 tech: Make power_grid configurable 
this is the first step to allow engineers, porting technologies, more room
for routing their handmade cells.

For now, we don't allow the specification of power_grids where the lower layer
prefers to be routed vertically. This is due to the router not
connecting some pins properly in that case.

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
 2020-01-28 12:06:34 +01:00
Bastian Koppelmann 988df8ebb9 hierarchy_layout: Add methods to create via stacks 
this allows us to simplify add_power_pin() and gives a clean
API to create vias through multiple layers.

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
 2020-01-28 11:47:32 +01:00
Matt Guthaus e62beae805 Merge branch 'tech_migration' into dev 2020-01-25 12:03:56 -08:00
mrg 877ea53b7f Fix conflicting boundary name 2020-01-24 21:24:44 +00:00
mrg 71cbe74017 Round middle position fix 2020-01-24 18:00:28 +00:00
mrg 9beb0f4ece Add separate well design rules. 
Needed to fix various pgates with wells.
Did some cleanup of these gates as well.
 2020-01-23 19:43:41 +00:00
mrg 306740f0f3 Add empty minarea function 2020-01-16 19:27:59 +00:00
mrg 262782cba0 Remove print, fix compare 2020-01-16 19:27:39 +00:00
mrg a2387da29d PEP format design 2020-01-16 19:26:57 +00:00
mrg ea00258be9 Cleanup contact 2020-01-16 19:26:43 +00:00
Bastian Koppelmann c0c89e465a vector: Implement hash cache for vector3d and vector 
this gives us a small runtime improvement in the router.

For FreePDK45 word_size=8, num_words=256

Improved
*** Maze routing supplies: 89.8 seconds
** Routing: 279.3 seconds

Non-improved
*** Maze routing supplies: 105.1 seconds
** Routing: 293.5 seconds

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
 2020-01-03 12:16:10 +01:00
Bastian Koppelmann 7ff5121d8c base/pin_layout: Implement hash cache 
the hash value only depends of the properties 'rect' and 'layer' so we
only compute the hash if those values are changed. Otherwise we just
return the precomputed value. This gives us a major speedup (~10x) if
the hash is used as a key in a dict.

During the grouping of pins in analyze_pins() this gives the best
improvements. For example for FreePDK45 with num_bits=8, num_words=256

Improved
**** Analyzing pins: 20.9 seconds
** Routing: 293.8 seconds
** SRAM creation: 349.8 seconds

Non-improved
**** Analyzing pins: 267.9 seconds
** Routing: 537.5 seconds
** SRAM creation: 592.9 seconds

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
 2020-01-03 11:39:59 +01:00
Bastian Koppelmann 14e8a26246 base/pin_layout: Make rect and layer properties 
only rect and layer are used to compute the hash for a pin. Having
those as properties allows us to cache the hash value and only update it
if either rect or layer are written.

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
 2020-01-03 11:33:34 +01:00
Matthew Guthaus bec12f5b94 Cleanup. 2019-12-23 21:16:08 +00:00
Matt Guthaus 4ad920eaf7 Small fixes to tech usage. 2019-12-23 08:42:52 -08:00
Matt Guthaus 9e8b03d6c2 Merge branch 'dev' into tech_migration 2019-12-19 16:23:22 -08:00
Matt Guthaus b7d78ec2ec Fix ptx active contact orientation to non-default M1 direction. 2019-12-19 12:54:10 -08:00
Matt Guthaus 36cb675150 Fix minwidth for multiple via bug. 2019-12-18 09:30:00 -08:00
Bastian Koppelmann de6b207798 hierachy_layout: Move number of via arg to add_power_pins() 
this allows custom modules to state how many vias they need
for power rails.

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
 2019-12-18 17:33:43 +01:00
Matthew Guthaus 8e151553e4 Update contact types. 
Use preferred directions in tech files.
Programmatically generate based on interconnect stacks.
 2019-12-17 23:45:07 +00:00
Matthew Guthaus fc4685c7f7 Cleanup. 2019-12-17 23:07:01 +00:00
Matt Guthaus c025ce6356 Add li to preferred direction 2019-12-17 14:06:23 -08:00
Matt Guthaus 24546461ad Fix over-writing of active spacing rule. 2019-12-17 11:23:59 -08:00
Matt Guthaus ed28b4983b Clean up and generalize layer rules. 
Convert metalN to mN.
Generalize helper constants in modules for
space, width, enclose, etc.
Use layer stacks whever possible.
Try to remove drc() calls in liu of helper constants.
 2019-12-17 11:03:36 -08:00
Matt Guthaus a79d03fef4 Remove poly contact 2019-12-16 17:18:49 -08:00
Matt Guthaus e143a6033f Use layer stacks from tech file in design class and throughout 2019-12-13 14:13:41 -08:00
Matt Guthaus e048ada23c Abstract basic DRC checks 2019-12-11 17:56:55 -08:00
Matt Guthaus f9a66e86b4 Add npc option to contact 2019-12-11 09:09:59 -08:00
Matt Guthaus 4a1b10ff0d Remove extra cast 2019-12-05 21:33:13 -08:00
Matthew Guthaus 5af22b79e2 Only add boundary for if there's a DRC stdc layer 2019-12-06 02:17:58 +00:00
Matt Guthaus 53c72c6054 Merge branch 'tech_migration' of github.com:VLSIDA/PrivateRAM into tech_migration 2019-12-05 15:41:56 -08:00
Matt Guthaus d150b165de Merge branch 'tech_migration' of github.com:VLSIDA/PrivateRAM into tech_migration 2019-12-05 15:38:29 -08:00
Matt Guthaus b1d8a35aa7 Add contact variation 2019-12-05 15:38:25 -08:00
Matthew Guthaus 3deeaf7164 Decrease verbosity of boundary layer 2019-12-05 23:33:23 +00:00
Matthew Guthaus 7397f110c5 Add bbox for special DRC rule boundary 2019-12-05 23:14:25 +00:00
Matt Guthaus 69bb245f28 Updates to gdsMill/tech layers 
Create active and poly contact types.
Define standard cell boundary option.
DataType and PurposeLayer are the same. Text must have type 0.
Remove vector from vlsiLayout. More debug in reader.
 2019-12-04 16:12:53 -08:00
Matt Guthaus 909321326d Ignore unused layers 2019-11-26 13:21:29 -08:00
Matthew Guthaus c4cf8134fe Undo changes for config expansion. Change unit tests to use OPENRAM_HOME. 2019-11-15 18:47:59 +00:00
Matthew Guthaus 131f4bda4a Add layer-purpose GDS support. Various PEP8 fixes. 2019-11-14 18:17:20 +00:00
Matthew Guthaus 32f1cde897 PEP8 formatting 2019-11-07 16:48:37 +00:00
Matt Guthaus 38213d998f Add separate layer and purpose pairs to tech layers. 2019-10-25 10:03:25 -07:00
mrg d583695959 Remove some flake8 errors/warnings. 2019-10-02 23:26:02 +00:00
Matt Guthaus 289d3b3988 Feedthru port edits. 
Comment about write driver size for write through to work, but
disable write through in functional simulation.
Provide warning in Verilog about write throughs.
 2019-09-27 14:18:49 -07:00
Matt Guthaus 4c3b171b72 Share nominal temperature and voltage. Nominal instead of typical. 2019-09-04 16:53:58 -07:00
jsowash 01bdea23ae Merge branch 'add_wmask' of https://github.com/VLSIDA/PrivateRAM into add_wmask 2019-09-03 11:50:57 -07:00
jsowash b5ca417b26 Added fix for column mux lib generation.: 2019-09-03 11:50:39 -07:00
Matt Guthaus 69c5608b53 Allow gds to be written with supplies off. Fix extraction bug with new options. 2019-09-03 11:23:35 -07:00
Matt Guthaus 7fe9e5704d Convert vcg and nets to ordered dict 2019-08-29 16:06:34 -07:00
Matt Guthaus ee2456f433 Merge branch 'add_wmask' into dev 2019-08-22 15:01:41 -07:00
Matt Guthaus bdf29c3a26 Fix non-preferred route width again. This time it is likely right. 2019-08-22 13:57:14 -07:00
Matt Guthaus afaa946f9c Fix width of non-preferred trunk wire 2019-08-22 12:03:38 -07:00
Matt Guthaus 2ffdfb18a4 Fix trunks less than a pitch in channel route 2019-08-21 17:11:02 -07:00
Matt Guthaus 9ada9a7dfa Fix pitch in channel router to support M3/M4. 2019-08-21 15:32:49 -07:00
Matt Guthaus 9f54afbf2c Fix capitalization in verilog golden files 2019-08-21 14:29:57 -07:00
Matt Guthaus d0f04405a6 Convert capital names to lower case for consistency 2019-08-21 13:45:34 -07:00
Hunter Nichols 1d22d39667 Uncommented tests that use model delays. Fixed issue in sense amp cin. 2019-08-08 18:26:12 -07:00
Hunter Nichols fc1cba099c Made all cin function relate to farads and all input_load relate to relative units. 2019-08-08 01:57:04 -07:00
Hunter Nichols 6860d3258e Added graph functions to compute analytical delay based on graph path. 2019-08-07 01:50:48 -07:00
Matt Guthaus 0c5cd2ced9 Merge branch 'dev' into rbl_revamp 2019-07-26 18:01:43 -07:00
Matt Guthaus 0bb41b8a5d Fix duplicate paths for timing checks 2019-07-25 13:25:58 -07:00
Matt Guthaus 3df8abd38c Clean up. Split class into own file. 2019-07-24 08:15:10 -07:00
jsowash ad0af54a9f Removed dupliction of addr_size. 2019-07-22 13:18:52 -07:00
jsowash 0a5461201a Change num_wmask to num_wmasks and write_size = None not word_size if wmask not used. 2019-07-19 14:58:37 -07:00
mrg e2602dd79b Add comments for pins. Fix noconn in dummy pbitcell. 2019-07-16 17:30:31 -07:00
mrg 37fcf3bf37 Move classes to individual file. 2019-07-16 15:18:04 -07:00
jsowash 5258016c9f Changed location of port for din_reg. 2019-07-06 12:27:24 -07:00
jsowash 6fe78fe04a Removed begin end for Verilog without wmask. 2019-07-06 11:29:34 -07:00
jsowash 24bfaa3b76 Added write_size to test 16 and added a newline to Verilog with no wmask for test 25. 2019-07-05 15:55:03 -07:00
jsowash ad9193ad5a Verified 1rw mask writing and changed verilog.py accordingly. 2019-07-05 15:08:59 -07:00
jsowash f29631695c Finished merge 2019-07-05 11:43:31 -07:00
mrg c0f9cdbc12 Create port address module 2019-07-05 09:03:52 -07:00
jsowash 02a0cd71ac fixed merge conflict 2019-07-04 11:14:32 -07:00
jsowash 125112b562 Added wmask flip flop. Need work on placement still. 2019-07-04 10:34:14 -07:00
mrg 8b0b2e2817 Merge branch 'dev' into rbl_revamp 2019-07-03 14:05:28 -07:00
Hunter Nichols 4e08e2da87 Merged and fixed conflicts with dev 2019-06-25 16:55:50 -07:00
Hunter Nichols 4f3340e973 Cleaned up graph additions to characterizer. 2019-06-25 16:37:35 -07:00
jsowash 3bd69d2759 Added functionality to express polygons in LEF files. 2019-06-25 09:20:00 -07:00
Matt d22d7de195 Reapply jsowash update without spice model file 2019-06-24 08:59:58 -07:00
mrg 4523a7b9f6 Replica bitcell array working 2019-06-19 16:03:21 -07:00
Matt Guthaus 6e044b776f Merge branch 'pep8_cleanup' into dev 2019-06-14 08:47:10 -07:00
Matt Guthaus a234b0af88 Fix space before comment 2019-06-14 08:43:41 -07:00
mrg bd4d965e37 Begin single layer supply router 2019-06-03 15:27:37 -07:00
mrg fc12ea24e9 Add boundary to every module and pgate for visual debug. 2019-06-03 15:27:37 -07:00
mrg 1268a7927b Pbitcell updates. 
Fix module offset error.
Add boundary for debugging.
Line wrap code.
 2019-06-03 15:27:37 -07:00
Matt Guthaus 7cca6b4f69 Add back scn3me_subm support 
Add back scn3me_subm tech files
Update cells to be DRC clean with rule 5.5.b
Allow magic for FreePDK45 but not debugged.
Revert to older Magic tech file for SCN3ME_SUBM
 2019-06-03 15:27:37 -07:00
Hunter Nichols ad229b1504 Altered indexing of objects in SRAM factory to remove duplications of items using OPTS names. Added smarter bitline name checking. 2019-05-28 16:55:09 -07:00
Hunter Nichols e2d1f7ab0a Added smarter name checking for the characterizer. 2019-05-27 13:08:59 -07:00
Hunter Nichols d08181455c Added multiport bitcell support for storage node checks 2019-05-20 22:50:03 -07:00
Hunter Nichols 099bc4e258 Added bitcell check to storage nodes. 2019-05-20 18:35:52 -07:00
Hunter Nichols d8617acff2 Merged with dev 2019-05-15 18:48:00 -07:00
Hunter Nichols 178d3df5f5 Added graph to characterizer to get net names and perform s_en checks. Graph not working with column mux. 2019-05-14 14:44:49 -07:00
mrg a5ed9b56cd Optional m4 in design class 2019-05-08 17:51:38 -07:00
Hunter Nichols d54074d68e Made timing graph more gate-level. Changed edges to be defined by inputs/ouputs and name based. 2019-05-07 00:52:27 -07:00
Matt Guthaus 0f03553689 Update copyright to correct years. 2019-05-06 06:50:15 -07:00
Hunter Nichols 5bfc42fdbb Added quality improvements to graph: improved naming, auto vdd/gnd removal 2019-04-29 23:57:25 -07:00
Matt Guthaus 3f9a987e51 Update copyright. Add header to all OpenRAM files. 2019-04-26 12:33:53 -07:00
Matt Guthaus 05ad4285af Cleanup pgate code. 
Moved create_netlist and create_layout to the pgate class
from which everything is derived. Modified all pgates
to have consistent debug output and order of init function.
 2019-04-26 12:30:42 -07:00
Hunter Nichols f35385f42a Cleaned up names, added exclusions to narrow paths for analysis. 2019-04-24 23:51:09 -07:00
Hunter Nichols e292767166 Added graph creation and functions in base class and lower level modules. 2019-04-24 14:23:22 -07:00
Hunter Nichols 4f28295e20 Added initial graph for correct naming 2019-04-19 01:27:06 -07:00
Matt Guthaus 25bc3a66ed Add far left option for contact placement in pgates. 2019-04-17 13:41:35 -07:00
Matt Guthaus a35bf29bdd Improve print output for debugging layout objects. 2019-04-17 13:41:17 -07:00
Matt Guthaus be20408fb2 Rewrite add_contact to use layer directions. 2019-04-15 18:00:36 -07:00
Hunter Nichols c1411f4227 Applied quick corner estimation to analytical delay. 2019-04-09 12:26:54 -07:00
Matt Guthaus df4e2fead8 Return empty set instead of a list. 2019-04-01 15:59:57 -07:00
Matt Guthaus 5f37677225 Convert pin map to a set for faster membership. 2019-04-01 15:45:44 -07:00
Matt Guthaus 74f904a509 Cleanup options for front-end. Improve info output. 2019-04-01 10:35:17 -07:00
Matt Guthaus c4c844a8a2 Remove duplicate module name checking since we use the factory 2019-03-06 14:14:46 -08:00
Hunter Nichols 80a325fe32 Added corner information for analytical power estimation. 2019-03-04 19:27:53 -08:00
Hunter Nichols 0e96648211 Added linear corner factors in analytical delay model. 2019-03-04 00:42:18 -08:00
Matt Guthaus 6c9ae1c659 Remove temp names in DRC/LVS. Extract unique doesn't actually extract. 2019-02-24 07:26:21 -08:00
Matt Guthaus d043c72277 Fix temp name error in openram.py 2019-02-21 11:16:21 -08:00
Matt Guthaus 09d6a63861 Change path to wire_path for Anaconda package conflict 2019-01-25 15:07:56 -08:00
Matt Guthaus 091b4e4c62 Add size commments to spize. Change pdriver stage effort. 2019-01-23 17:27:15 -08:00
Matt Guthaus 7a152ea13d Move sram_factory to root dir 2019-01-16 17:06:29 -08:00
Matt Guthaus 9ecfaf16ea Add the factory class 2019-01-16 17:04:28 -08:00
Matt Guthaus 91636be642 Convert all contacts to use the sram_factory 2019-01-16 16:56:06 -08:00
Matt Guthaus a418431a42 First draft of sram_factory code 2019-01-16 16:15:38 -08:00
Matt Guthaus 20b869f8e1 Remove tabs 2019-01-11 14:16:57 -08:00
Matt Guthaus 5de7ff3773 Updated Verilog to have multiport. Added 1rw,1rw/1r Verilog testbench. 2019-01-11 14:15:16 -08:00
Jesse Cirimelli-Low b6e7ddd023 Merge branch 'dev' into datasheet_gen 2018-12-04 16:27:04 -08:00
Matt Guthaus 126d4a8d10 Fix instersection bug. Improve primary and secondary pin algo. 2018-12-04 16:53:04 -08:00
Jesse Cirimelli-Low 9501b99df7 merged branch wtih dev 2018-12-03 09:47:34 -08:00
Matt Guthaus 90d1fa7c43 Bitcell supply routing fixes. 
Flatten and simplify 1rw 1r bitcell.
Move bitcell vias to M3 if rotation is limited.
Simplify replica bitcell vdd routing.
 2018-11-30 12:32:13 -08:00
Matt Guthaus 7e054a51e2 Some techs don't need m1 power pins 2018-11-29 18:47:38 -08:00
Matt Guthaus a7be60529f Do not rotate vias in horizontal channel routes 2018-11-29 13:57:40 -08:00
Matt Guthaus 4df862d8af Convert channel router to take netlist of pins rather than names. 2018-11-29 12:12:10 -08:00
Jesse Cirimelli-Low 1942ef33ac Merge branch 'dev' into datasheet_gen 2018-11-20 11:23:42 -08:00
Matt Guthaus b8299565eb Use grid furthest from blockages when blocked pin. Enclose multiple connectors. 2018-11-19 17:32:55 -08:00
Matt Guthaus 20d4e390f6 Add bounding box of connector for when there are multiple connectors 2018-11-19 15:45:07 -08:00
Matt Guthaus 6a7d721562 Add new bbox routine for pin enclosures 2018-11-19 09:28:29 -08:00
Matt Guthaus 8f28f4fde5 Don't always add all 3 types of contorl. Add write and read only port lists. 2018-11-16 15:03:12 -08:00
Matt Guthaus b13d938ea8 Add m3m4 short hand in design class 2018-11-16 14:10:49 -08:00
Matt Guthaus 4997a20511 Must set library cell flag for netlist only mode as well 2018-11-16 13:37:17 -08:00
Matt Guthaus ca750b698a Uniquify bitcell array 2018-11-16 12:52:22 -08:00
Matt Guthaus e040fd12f9 Bitcell and bitcell array can be named the same. 2018-11-16 12:00:23 -08:00
Matt Guthaus 5e0eb609da Check for single top-level structure in vlsiLayout. Don't allow dff_inv and dff_buf to have same names. 2018-11-16 11:48:41 -08:00
Jesse Cirimelli-Low 59c0421804 merge dev into datasheet_gen; fixed merge conflict in hierarchy_design.py 2018-11-15 10:45:33 -08:00
Matt Guthaus ff0a7851b7 Fix error when DRC is disabled so it doesn't initialize. 2018-11-13 17:41:32 -08:00
Matt Guthaus ce74827f24 Add new option to enable inline checks at each level of hierarchy. Default is off. 2018-11-13 16:51:19 -08:00
Matt Guthaus 732f35a362 Change channel router to route from bottom up to simplify code. 2018-11-11 12:25:53 -08:00
Matt Guthaus 791d74f63a Fix wrong exception handling that depended on order. Replaced with if/else instead. 2018-11-11 12:02:42 -08:00
Jesse Cirimelli-Low 4227a7886a Merge branch 'dev' into datasheet_gen 2018-11-11 07:27:42 -08:00
Jesse Cirimelli-Low 91a63fb5c2 Merge branch 'dev' 2018-11-11 07:24:03 -08:00
Jesse Cirimelli-Low 62f8d26ec6 Merge branch 'dev' into datasheet_gen 2018-11-10 10:58:35 -08:00
Matt Guthaus de61630962 Expand blocked pins to neighbor grid cells. 2018-11-09 14:25:10 -08:00
Jesse Cirimelli-Low 30bffdf1b4 Merge branch 'dev' into datasheet_gen 2018-11-08 19:26:00 -08:00
Matt Guthaus 31eff6f24e Merge branch 'dev' into multiport_layout 2018-11-08 18:00:28 -08:00
Matt Guthaus fd5cd675ac Horizontal increments top down. 2018-11-08 17:01:57 -08:00