caiyu/nextpnr
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5 Commits

Author SHA1 Message Date
Keith Rothman
c8dccd3e7b Implement debugging tools for site router. 
- Finishes implementation of SiteArch::nameOfPip and SiteArch::nameOfWire
 - Adds "explain_bel_status", which should be an exhaustive diagnostic
   of the status of a BEL placement.

Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
 2021-03-25 17:56:11 -07:00
gatecat
23413a4d12 Fix compiler warnings introduced by -Wextra 
Signed-off-by: gatecat <gatecat@ds0.me>
 2021-02-25 15:15:25 +00:00
Keith Rothman
a30043c8da Fix assorted bugs in FPGA interchange. 
Fixes:
 - Only use map constant pins during routing, and not during placement.
 - Unmapped cell ports have no BEL pins.
 - Fix SiteRouter congestion not taking into account initial expansion.
 - Fix psuedo-site pip output.

Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
 2021-02-23 14:09:28 -08:00
Keith Rothman
184665652e Finish dedicated interconnect implementation. 
Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
 2021-02-23 14:09:28 -08:00
Keith Rothman
2fc353d559 Add initial logic for handling dedicated interconnect situations. 
Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
 2021-02-23 14:09:28 -08:00