diff options
Diffstat (limited to 'common/nextpnr.h')
| -rw-r--r-- | common/nextpnr.h | 58 |
1 files changed, 48 insertions, 10 deletions
diff --git a/common/nextpnr.h b/common/nextpnr.h index f2bcb90d..c2fe5192 100644 --- a/common/nextpnr.h +++ b/common/nextpnr.h @@ -556,6 +556,44 @@ struct Property inline bool operator==(const Property &a, const Property &b) { return a.is_string == b.is_string && a.str == b.str; } inline bool operator!=(const Property &a, const Property &b) { return a.is_string != b.is_string || a.str != b.str; } +// minimum and maximum delay +struct DelayPair +{ + DelayPair(){}; + explicit DelayPair(delay_t delay) : min_delay(delay), max_delay(delay){}; + DelayPair(delay_t min_delay, delay_t max_delay) : min_delay(min_delay), max_delay(max_delay){}; + delay_t minDelay() const { return min_delay; }; + delay_t maxDelay() const { return max_delay; }; + delay_t min_delay, max_delay; + DelayPair operator+(const DelayPair &other) const + { + return {min_delay + other.min_delay, max_delay + other.max_delay}; + } +}; + +// four-quadrant, min and max rise and fall delay +struct DelayQuad +{ + DelayPair rise, fall; + DelayQuad(){}; + explicit DelayQuad(delay_t delay) : rise(delay), fall(delay){}; + DelayQuad(delay_t min_delay, delay_t max_delay) : rise(min_delay, max_delay), fall(min_delay, max_delay){}; + DelayQuad(DelayPair rise, DelayPair fall) : rise(rise), fall(fall){}; + DelayQuad(delay_t min_rise, delay_t max_rise, delay_t min_fall, delay_t max_fall) + : rise(min_rise, max_rise), fall(min_fall, max_fall){}; + + delay_t minRiseDelay() const { return rise.minDelay(); }; + delay_t maxRiseDelay() const { return rise.maxDelay(); }; + delay_t minFallDelay() const { return fall.minDelay(); }; + delay_t maxFallDelay() const { return fall.maxDelay(); }; + delay_t minDelay() const { return std::min<delay_t>(rise.minDelay(), fall.minDelay()); }; + delay_t maxDelay() const { return std::max<delay_t>(rise.maxDelay(), fall.maxDelay()); }; + + DelayPair delayPair() const { return DelayPair(minDelay(), maxDelay()); }; + + DelayQuad operator+(const DelayQuad &other) const { return {rise + other.rise, fall + other.fall}; } +}; + struct ClockConstraint; struct NetInfo : ArchNetInfo @@ -651,15 +689,15 @@ struct TimingClockingInfo { IdString clock_port; // Port name of clock domain ClockEdge edge; - DelayInfo setup, hold; // Input timing checks - DelayInfo clockToQ; // Output clock-to-Q time + DelayPair setup, hold; // Input timing checks + DelayQuad clockToQ; // Output clock-to-Q time }; struct ClockConstraint { - DelayInfo high; - DelayInfo low; - DelayInfo period; + DelayPair high; + DelayPair low; + DelayPair period; TimingConstrObjectId domain_tmg_id; }; @@ -1117,7 +1155,7 @@ template <typename R> struct ArchAPI : BaseCtx virtual NetInfo *getBoundWireNet(WireId wire) const = 0; virtual WireId getConflictingWireWire(WireId wire) const = 0; virtual NetInfo *getConflictingWireNet(WireId wire) const = 0; - virtual DelayInfo getWireDelay(WireId wire) const = 0; + virtual DelayQuad getWireDelay(WireId wire) const = 0; // Pip methods virtual typename R::AllPipsRangeT getPips() const = 0; virtual PipId getPipByName(IdStringList name) const = 0; @@ -1133,7 +1171,7 @@ template <typename R> struct ArchAPI : BaseCtx virtual NetInfo *getConflictingPipNet(PipId pip) const = 0; virtual WireId getPipSrcWire(PipId pip) const = 0; virtual WireId getPipDstWire(PipId pip) const = 0; - virtual DelayInfo getPipDelay(PipId pip) const = 0; + virtual DelayQuad getPipDelay(PipId pip) const = 0; virtual Loc getPipLocation(PipId pip) const = 0; // Group methods virtual GroupId getGroupByName(IdStringList name) const = 0; @@ -1148,7 +1186,7 @@ template <typename R> struct ArchAPI : BaseCtx virtual delay_t getDelayEpsilon() const = 0; virtual delay_t getRipupDelayPenalty() const = 0; virtual float getDelayNS(delay_t v) const = 0; - virtual DelayInfo getDelayFromNS(float ns) const = 0; + virtual delay_t getDelayFromNS(float ns) const = 0; virtual uint32_t getDelayChecksum(delay_t v) const = 0; virtual bool getBudgetOverride(const NetInfo *net_info, const PortRef &sink, delay_t &budget) const = 0; virtual delay_t estimateDelay(WireId src, WireId dst) const = 0; @@ -1160,7 +1198,7 @@ template <typename R> struct ArchAPI : BaseCtx virtual DecalXY getPipDecal(PipId pip) const = 0; virtual DecalXY getGroupDecal(GroupId group) const = 0; // Cell timing methods - virtual bool getCellDelay(const CellInfo *cell, IdString fromPort, IdString toPort, DelayInfo &delay) const = 0; + virtual bool getCellDelay(const CellInfo *cell, IdString fromPort, IdString toPort, DelayQuad &delay) const = 0; virtual TimingPortClass getPortTimingClass(const CellInfo *cell, IdString port, int &clockInfoCount) const = 0; virtual TimingClockingInfo getPortClockingInfo(const CellInfo *cell, IdString port, int index) const = 0; // Placement validity checks @@ -1391,7 +1429,7 @@ template <typename R> struct BaseArch : ArchAPI<R> virtual DecalXY getGroupDecal(GroupId group) const override { return DecalXY(); } // Cell timing methods - virtual bool getCellDelay(const CellInfo *cell, IdString fromPort, IdString toPort, DelayInfo &delay) const override + virtual bool getCellDelay(const CellInfo *cell, IdString fromPort, IdString toPort, DelayQuad &delay) const override { return false; } |