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* Gowin: more clearly mark dummy pipsPepijn de Vos2021-10-101-2/+2
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* gowin: Replace the zero delays with reasonable values.YRabbit2021-10-091-12/+35
| | | | Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: add support for wide LUTs.YRabbit2021-10-071-8/+100
| | | | | | | | | * A hardwired MUX within each logical cell is used. * The delay is equal 0. * No user placement constraints. * The output route contains dummy PIPs. They are ignored by gowin_pack, but it may be worth removing them. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Place DFFs of different types in the slice.YRabbit2021-08-311-2/+26
| | | | | | | | | | | | | | | | | Allow the registers of the same type or pairs shown below to be placed in the same slide: |--------|--------| | DFFS | DFFR | | DFFSE | DFFRE | | DFFP | DFFC | | DFFPE | DFFCE | | DFFNS | DFFNR | | DFFNSE | DFFNRE | | DFFNP | DFFNC | | DFFNPE | DFFNCE | Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Add constraints on primitive placement.YRabbit2021-08-311-11/+32
| | | | | | | | | | Added support for the INS_LOC instruction in the constraints file (.CST), which is used to specify object placement. Expanded treatment of IO_LOC/IO_PORT constraints, which now can be applied to both ports and IO buffers. Port constraints have priority. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Add the IO[TRBL]style placement recognitionYRabbit2021-08-231-5/+37
| | | | | | | | | Specifying pin placement with this notation (e.g. IOR4B) allows to use the same constraint file without changes for different packages and even different families. The vendor router also understands this notation. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Change the constraint parser to support multiple options per line. ↵YRabbit2021-08-061-6/+11
| | | | | | Add support for IOBUF and TBUF I/O modes. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Fix the boolean.YRabbit2021-07-081-1/+1
| | | | Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Fix formatingYRabbit2021-07-071-24/+24
| | | | Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Fix boolean value.YRabbit2021-07-071-1/+1
| | | | Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Wip parserYRabbit2021-07-071-16/+4
| | | | Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* ParserYRabbit2021-07-051-0/+9
| | | | Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Fix parser. Comments and IO_PORTYRabbit2021-07-031-11/+9
| | | | Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* SyntaxYRabbit2021-07-021-3/+3
| | | | Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Add IO_PORT parsingYRabbit2021-07-021-14/+27
| | | | Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Fixing old emails and names in copyrightsgatecat2021-06-121-1/+1
| | | | Signed-off-by: gatecat <gatecat@ds0.me>
* Use hashlib for core netlist structuresgatecat2021-06-021-2/+2
| | | | Signed-off-by: gatecat <gatecat@ds0.me>
* only one type of dff per slicePepijn de Vos2021-02-281-1/+7
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* Fix compiler warnings introduced by -Wextragatecat2021-02-251-16/+16
| | | | Signed-off-by: gatecat <gatecat@ds0.me>
* Change CellInfo in getBelPinsForCellPin to be const.Keith Rothman2021-02-231-1/+1
| | | | Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Replace DelayInfo with DelayPair/DelayQuadgatecat2021-02-191-33/+23
| | | | | | | | | | | | | | | | | This replaces the arch-specific DelayInfo structure with new DelayPair (min/max only) and DelayQuad (min/max for both rise and fall) structures that form part of common code. This further reduces the amount of arch-specific code; and also provides useful data structures for timing analysis which will need to delay with pairs/quads of delays as it is improved. While there may be a small performance cost to arches that didn't separate the rise/fall cases (arches that aren't currently separating the min/max cases just need to be fixed...) in DelayInfo, my expectation is that inlining will mean this doesn't make much difference. Signed-off-by: gatecat <gatecat@ds0.me>
* gowin: Fix archcheck errors and add to CIgatecat2021-02-171-1/+11
| | | | Signed-off-by: gatecat <gatecat@ds0.me>
* gowin: Fix IdStrings being overwritten by wireToGlobalgatecat2021-02-171-8/+8
| | | | Signed-off-by: gatecat <gatecat@ds0.me>
* Remove isValidBelForCellgatecat2021-02-161-15/+0
| | | | | | | | | | | | | | | | | This Arch API dates from when we were first working out how to implement placement validity checking, and in practice is little used by the core parts of placer1/HeAP and the Arch implementation involves a lot of duplication with isBelLocationValid. In the short term; placement validity checking is better served by the combination of checkBelAvail and isValidBelForCellType before placement; followed by isBelLocationValid after placement (potentially after moving/swapping multiple cells). Longer term, removing this API makes things a bit cleaner for a new validity checking API. Signed-off-by: gatecat <gatecat@ds0.me>
* Add getBelPinsForCellPin to Arch APIgatecat2021-02-101-0/+2
| | | | | | | | | | | | This is a basic implementation, without considering "M of N" arrangements (e.g. for LUT permuation where you only want to route to 1 out of 4/6 sinks) or using a type other than IdString to identify bel pins. But this is also enough to start working out where in nextpnr will break due to removing the 1:1 cell:bel pin cardinality, as a next step. Signed-off-by: gatecat <gatecat@ds0.me>
* gowin: Switch to BaseArchD. Shah2021-02-051-40/+2
| | | | Signed-off-by: D. Shah <dave@ds0.me>
* Mark IdString and IdStringList single argument constructors explicit.Keith Rothman2021-02-041-19/+18
| | | | | | | | | Single argument constructors will silently convert to that type. This is typically not the right thing to do. For example, the nexus and ice40 arch_pybindings.h files were incorrectly parsing bel name strings, etc. Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* gowin: Stub implementation of IdStringListD. Shah2021-02-021-14/+14
| | | | Signed-off-by: D. Shah <dave@ds0.me>
* Run "make clangformat".Keith Rothman2021-02-021-2/+2
| | | | Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Add Partition APIs to ice40, nexus, gowin archs.Keith Rothman2021-02-021-0/+9
| | | | Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* clangformatDavid Shah2020-12-301-16/+11
| | | | Signed-off-by: David Shah <dave@ds0.me>
* Gowin target (#542)Pepijn de Vos2020-12-301-0/+1237
* load wires * add slice bels * add IOB * add aliases * local aliases * broken packing stuff * working packer * add constraints * pnr runs1111 * add timing info * constraints * more constraint stuff * add copyright * remove generic reference * remove parameters * remove generic python api * add newline to end of file * some small refactoring * warn on invalid constraints * don't error on missing cell * comment out debugging print * typo * avoid copy * faster empty idstring * remove intermediate variable * no more deadnames * fix cst warnings * increase ripup and epsilon a bit * take single device parameter * add info to readme * gui stubs * Revert 4d03b681a8634e978bd5af73c97665500047e055 * assign ff_used in assignArchInfo * decrease beta for better routability * try to fix CI
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