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* gowin: Add support for long wiresYRabbit2022-05-271-1/+9
| | | | | | | | | | | | | | | | | | | | | | Gowin chips have a highly sophisticated system of long wires that are wired to each cell and allow the clock or logic to spread quickly. This commit implements some of the capabilities of the long wire system for quadrants, leaving out the fine-tuning of them for each column. To make use of the long wire system, the specified wire is cut at the driver and a special cell is placed between the driver and the rest of the wire. * VCC and GND can not use long wires because they are in every cell and there is no point in using a net * Long wire numbers can be specified manually or assigned automatically. * The route from the driver to the port of the new cell can be quite long, this will have to be solved somehow. * It might make sense to add a mechanism for automatically finding candidates for long wires. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: handle the GW1N-9 feature.YRabbit2022-04-031-0/+2
| | | | | | | | This chip has a different default state for one type of I/O buffer --- you have to explicitly switch it to the normal state by feeding VCC/VSS to certain inputs. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Fix z-index of oscillatorTim Pambor2022-03-301-1/+2
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* gowin: Consider the peculiarity of GW1BR-9CYRabbit2022-03-261-0/+3
| | | | | | | The GW1NR-9C chip ODDR implementation differs from all other supported chips by two suspicious inputs. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: add support for ODDR primitiveYRabbit2022-03-151-4/+13
| | | | | | | | | Compatible with older versions of apicula bases. Also small fixes and as the number of virtual Bels grows it is necessary to assign them Z coordinate in a centralized way to avoid conflicts and for this purpose introduced the BelZ enum. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* refactor: Use constids instead of id("..")gatecat2022-02-161-1/+1
| | | | Signed-off-by: gatecat <gatecat@ds0.me>
* gowin: Add GUI.YRabbit2022-01-291-8/+21
| | | | | | | | | | | | | | | * Items such as LUT, DFF, MUX, ALU, IOB are displayed; * Local wires, 1-2-4-8 wires are displayed; * The clock spines, taps and branches are displayed with some caveats. For now, you can not create a project in the GUI because of possible conflict with another PR (about GW1NR-9C support), but you can specify the board in the command line and load .JSON and .CST in the GUI. Although ALUs are displayed, but the CIN and COUT wires are not. This is still an unsolved problem. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Initializing the grid dimensionsYRabbit2021-12-261-1/+1
| | | | | | | gridDimX and gridDimY are not initialized explicitly, which leads to effects when the design is reloaded, say, from the GUI. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* archapi: Use arbitrary rather than actual placement in predictDelaygatecat2021-12-191-1/+1
| | | | | | | | | | | | This makes predictDelay be based on an arbitrary belpin pair rather than a arc of a net based on cell placement. This way 'what-if' decisions can be evaluated without actually changing placement; potentially useful for parallel placement. A new helper predictArcDelay behaves like the old predictDelay to minimise the impact on existing passes; only arches need be updated. Signed-off-by: gatecat <gatecat@ds0.me>
* gowin: Check the chipdb versionYRabbit2021-11-071-0/+2
| | | | Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Use speed from chip base.YRabbit2021-11-051-2/+1
| | | | | | | Another simplification of the input regular expression, now the speed is taken from the base. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Add partnumbers and packages to the chipdbYRabbit2021-11-041-1/+9
| | | | | | | | | | Instead of parsing the partnumber with a regular expression, a simple table is used. This is done because the structure of the partnumber changes as new features appear (e.g., ES instead of C6/I5) This commit does not yet disable the very first regular expression check. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: add support for wide LUTs.YRabbit2021-10-071-0/+3
| | | | | | | | | * 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: Add constraints on primitive placement.YRabbit2021-08-311-0/+3
| | | | | | | | | | 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>
* Fixing old emails and names in copyrightsgatecat2021-06-121-1/+1
| | | | Signed-off-by: gatecat <gatecat@ds0.me>
* Using hashlib in archesgatecat2021-06-021-25/+12
| | | | Signed-off-by: gatecat <gatecat@ds0.me>
* Split nextpnr.h to allow for linear inclusion.Keith Rothman2021-03-151-4/+15
| | | | | | | | | | | | | | | | | | | "nextpnr.h" is no longer the god header. Important improvements: - Functions in log.h can be used without including BaseCtx/Arch/Context. This means that log_X functions can be called without included "nextpnr.h" - NPNR_ASSERT can be used without including "nextpnr.h" by including "nextpnr_assertions.h". This allows NPNR_ASSERT to be used safely in any header file. - Types defined in "archdefs.h" are now available without including BaseCtx/Arch/Context. This means that utility classes that will be used inside of BaseCtx/Arch/Context can be defined safely in a self-contained header. Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Fix compiler warnings introduced by -Wextragatecat2021-02-251-8/+8
| | | | 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/DelayQuadgatecat2021-02-191-19/+11
| | | | | | | | | | | | | | | | | 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: Use base bel bucket/cell type methodsgatecat2021-02-171-5/+1
| | | | Signed-off-by: gatecat <gatecat@ds0.me>
* Remove isValidBelForCellgatecat2021-02-161-1/+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>
* Use 'T' postfix to disambiguate LHS and RHS of usingD. Shah2021-02-081-21/+21
| | | | | | | Arches might otherwise have range types named ambigiously with the entry in ArchRanges. Signed-off-by: D. Shah <dave@ds0.me>
* Add archArgs and archArgsToId to Arch APID. Shah2021-02-051-2/+3
| | | | Signed-off-by: D. Shah <dave@ds0.me>
* gowin: Switch to BaseArchD. Shah2021-02-051-110/+105
| | | | Signed-off-by: D. Shah <dave@ds0.me>
* gowin: Stub implementation of IdStringListD. Shah2021-02-021-9/+12
| | | | Signed-off-by: D. Shah <dave@ds0.me>
* arch: Add getNameDelimiter API for string listsD. Shah2021-02-021-0/+1
| | | | Signed-off-by: D. Shah <dave@ds0.me>
* Run "make clangformat".Keith Rothman2021-02-021-24/+11
| | | | Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Rename Partition -> BelBucket.Keith Rothman2021-02-021-8/+8
| | | | Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Add Partition APIs to ice40, nexus, gowin archs.Keith Rothman2021-02-021-0/+37
| | | | Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Initial refactoring of placer API.Keith Rothman2021-02-021-0/+3
| | | | Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* clangformatDavid Shah2020-12-301-10/+13
| | | | Signed-off-by: David Shah <dave@ds0.me>
* Gowin target (#542)Pepijn de Vos2020-12-301-0/+436
* 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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