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| author | gatecat <gatecat@ds0.me> | 2021-02-10 11:54:54 +0000 |
|---|---|---|
| committer | gatecat <gatecat@ds0.me> | 2021-02-10 11:54:54 +0000 |
| commit | 85bb108ba40f9573571de0a785f9fbc91c4e1dd0 (patch) | |
| tree | 8f198b13a648057d21c8e839afea5c4463c6189b /common | |
| parent | 6bd3dba1e39780e52097533f7e89f823d7e72956 (diff) | |
| download | nextpnr-85bb108ba40f9573571de0a785f9fbc91c4e1dd0.tar.gz nextpnr-85bb108ba40f9573571de0a785f9fbc91c4e1dd0.tar.bz2 nextpnr-85bb108ba40f9573571de0a785f9fbc91c4e1dd0.zip | |
Add getBelPinsForCellPin to Arch API
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>
Diffstat (limited to 'common')
| -rw-r--r-- | common/nextpnr.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/common/nextpnr.h b/common/nextpnr.h index c43b9dc4..cf04f831 100644 --- a/common/nextpnr.h +++ b/common/nextpnr.h @@ -1093,6 +1093,7 @@ template <typename R> struct ArchAPI : BaseCtx virtual WireId getBelPinWire(BelId bel, IdString pin) const = 0; virtual PortType getBelPinType(BelId bel, IdString pin) const = 0; virtual typename R::BelPinsRangeT getBelPins(BelId bel) const = 0; + virtual typename R::CellBelPinRangeT getBelPinsForCellPin(CellInfo *cell_info, IdString pin) const = 0; // Wire methods virtual typename R::AllWiresRangeT getWires() const = 0; virtual WireId getWireByName(IdStringList name) const = 0; @@ -1176,6 +1177,8 @@ template <typename R> struct ArchAPI : BaseCtx // This contains the relevant range types for the default implementations of Arch functions struct BaseArchRanges { + // Bels + using CellBelPinRangeT = std::array<IdString, 1>; // Attributes using BelAttrsRangeT = std::vector<std::pair<IdString, std::string>>; using WireAttrsRangeT = std::vector<std::pair<IdString, std::string>>; @@ -1241,6 +1244,11 @@ template <typename R> struct BaseArch : ArchAPI<R> return empty_if_possible<typename R::BelAttrsRangeT>(); } + virtual typename R::CellBelPinRangeT getBelPinsForCellPin(CellInfo *cell_info, IdString pin) const override + { + return return_if_match<std::array<IdString, 1>, typename R::CellBelPinRangeT>({pin}); + } + // Wire methods virtual IdString getWireType(WireId wire) const override { return IdString(); } virtual typename R::WireAttrsRangeT getWireAttrs(WireId) const override |