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92 Commits

Author SHA1 Message Date
Clifford Wolf
ad0df6cea8 Update placer for new Chip API 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-16 15:38:26 +02:00
Clifford Wolf
4d14bc2914 Merge remote-tracking branch 'origin/master' into chipdbng 2018-06-16 15:25:03 +02:00
Clifford Wolf
6acf23cf37 Some refactoring of Chip API (prep for chipdb refactoring) 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-16 15:23:04 +02:00
David Shah
ef2164708b router: Fixing loop issue 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-16 14:49:38 +02:00
David Shah
c0a2627179 place: Tidying up the SA placer 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-16 14:44:10 +02:00
David Shah
71903e29d4 place: Reformat placer 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-16 14:44:10 +02:00
David Shah
2479b4ecbf Improve placement heuristic 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-16 14:44:10 +02:00
Clifford Wolf
579455d1b0 Fix router for routing to the same dest wire twice 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-16 14:44:10 +02:00
David Shah
432fe52274 Remove dead code 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-16 14:44:10 +02:00
David Shah
47566cf5e9 Improving SA placer performance 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-16 14:44:10 +02:00
David Shah
2d993d8ee9 Very slow SA placer based on arachne-pnr 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-16 14:44:10 +02:00
David Shah
32dcf6b3fe Experimenting with more unplacing 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-16 14:44:10 +02:00
David Shah
104c2dad9b Adding randomness and changes metrics to placer 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-16 14:44:10 +02:00
David Shah
828c96f80b Updating placer 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-16 14:44:10 +02:00
David Shah
2f01ec5157 Update basic placer to use new API 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-16 14:44:10 +02:00
David Shah
3ef45d2a27 Another heuristic experiment 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-16 14:44:10 +02:00
David Shah
b1e08fa064 Playing about with placement heuristics 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-16 14:44:10 +02:00
David Shah
6b74d326d4 experiment: Simple heuristic-based placer 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-16 14:44:10 +02:00
Clifford Wolf
5d343a168b Fix router for routing to the same dest wire twice 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-15 20:56:40 +02:00
Clifford Wolf
8c46cc2fce Add output of estimated total wire delay to router (as metric for placement quality) 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-14 19:13:14 +02:00
Clifford Wolf
66ced800d7 Increase ripup penalties over time 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-14 15:45:47 +02:00
Clifford Wolf
312699e590 Add route-ripup routing loop 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-14 15:09:13 +02:00
Clifford Wolf
7787ce5fd9 Refactor position/delay estimation API 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-14 12:43:00 +02:00
David Shah
b1cbae1293 python: Clear SIGINT handler after Python loads 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-14 10:08:54 +02:00
Clifford Wolf
9b3af68e44 Improve router error reporting 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-13 18:28:02 +02:00
Clifford Wolf
3d5954f997 Improve router error messages 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-13 18:10:09 +02:00
Clifford Wolf
794fc6df60 Add support for CellInfo->pins in router 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-13 17:52:18 +02:00
Clifford Wolf
9eb4943bd5 Fix router error handling for unplaced cells 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-13 17:26:03 +02:00
Clifford Wolf
aa4fedfd54 Add A*-like optimizations to router 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-13 16:52:21 +02:00
David Shah
a76f5c5678 Remove IO buffers when fed by SB_IO 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-13 10:50:05 +02:00
Miodrag Milanovic
9953012154 reveresed logic for enabling main file, and made tests link arch files 2018-06-12 19:56:03 +02:00
David Shah
330d393c59 Fixing regression due to IDStrings 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-12 16:04:02 +02:00
Clifford Wolf
da33da5bc2 Minor clangformat changes 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-12 15:52:38 +02:00
Clifford Wolf
136ce3d18f Merge branch 'master' of gitlab.com:SymbioticEDA/nextpnr 2018-06-12 15:51:51 +02:00
Clifford Wolf
9c275d0a65 Add fast IdString <-> PortPin conversion 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-12 15:50:33 +02:00
David Shah
b77a03d195 Minimal Python bindings for IdString 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-12 15:48:22 +02:00
Clifford Wolf
7e879953d6 Add proper fast IdString 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-12 15:37:28 +02:00
David Shah
6707b985b4 ice40: Add support for LC placement constraints in packer 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-12 15:13:50 +02:00
Clifford Wolf
a139654980 Add IdString API 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-12 15:08:01 +02:00
Clifford Wolf
d62e341d5a Merge branch 'master' of gitlab.com:SymbioticEDA/nextpnr 2018-06-12 14:25:12 +02:00
Clifford Wolf
391d49c13e Add nextpnr namespace 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-12 14:24:59 +02:00
David Shah
47eeda40bc Implement the placement validity checker 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-12 13:45:59 +02:00
David Shah
2f61a9b98a ice40: Start working on a packer, currently not tested 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-12 12:13:11 +02:00
David Shah
5f813410aa ice40: Adding cell utilities for packing 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-12 11:49:54 +02:00
David Shah
3ce32b6b1d Adding some utilities for packing 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-12 11:02:07 +02:00
Clifford Wolf
be73894bea Add "nextpnr.h" 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-11 20:12:57 +02:00
Clifford Wolf
ac67482380 Remove pool, dict, vector namespace aliases 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-11 19:56:33 +02:00
Clifford Wolf
70f322ab44 Renamed LOC attribute to BEL, fix ice40 IO bel names 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-09 19:52:22 +02:00
David Shah
72f5e640af Adding basic placement constraints 
Specify the attribute (* LOC="bel_name" *) on any cell to constrain its
placement to that bel.

Signed-off-by: David Shah <davey1576@gmail.com>
 2018-06-09 19:38:37 +02:00
Clifford Wolf
dfbfbf87db Add very basic router 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-06-09 18:19:20 +02:00