diff options
Diffstat (limited to 'ice40/chip.h')
| -rw-r--r-- | ice40/chip.h | 163 |
1 files changed, 115 insertions, 48 deletions
diff --git a/ice40/chip.h b/ice40/chip.h index 7dd39b63..ed7f64b2 100644 --- a/ice40/chip.h +++ b/ice40/chip.h @@ -22,6 +22,48 @@ #ifndef CHIP_H #define CHIP_H +// ----------------------------------------------------------------------- + +struct BelInfoPOD +{ + const char *name; +}; + +struct WireDelayPOD +{ + int32_t wire_index; + float delay; +}; + +struct BelPortPOD +{ + int32_t bel_index; + int port_index; +}; + +struct WireInfoPOD +{ + const char *name; + int num_uphill, num_downhill, num_bidir; + WireDelayPOD *wires_uphill, *wires_downhill, *wires_bidir; + + int num_bels_downhill; + BelPortPOD bel_uphill; + BelPortPOD *bels_downhill; +}; + +extern int num_wires_384; +extern int num_wires_1k; +extern int num_wires_5k; +extern int num_wires_8k; + +extern WireInfoPOD wire_data_384[]; +extern WireInfoPOD wire_data_1k[]; +extern WireInfoPOD wire_data_5k[]; +extern WireInfoPOD wire_data_8k[]; + +// ----------------------------------------------------------------------- + struct BelId { int32_t index = -1; @@ -59,6 +101,8 @@ namespace std }; } +// ----------------------------------------------------------------------- + struct BelIterator { BelId *ptr = nullptr; @@ -75,22 +119,31 @@ struct BelRange BelIterator end() const { return e; } }; -struct WireIterator +// ----------------------------------------------------------------------- + +struct AllWiresIterator { - WireId *ptr = nullptr; + int cursor; - void operator++() { ptr++; } - bool operator!=(const WireIterator &other) const { return ptr != other.ptr; } - WireId operator*() const { return *ptr; } + void operator++() { cursor++; } + bool operator!=(const AllWiresIterator &other) const { return cursor != other.cursor; } + + WireId operator*() const { + WireId ret; + ret.index = cursor; + return ret; + } }; -struct WireRange +struct AllWiresRange { - WireIterator b, e; - WireIterator begin() const { return b; } - WireIterator end() const { return e; } + AllWiresIterator b, e; + AllWiresIterator begin() const { return b; } + AllWiresIterator end() const { return e; } }; +// ----------------------------------------------------------------------- + struct WireDelay { WireId wire; @@ -99,11 +152,17 @@ struct WireDelay struct WireDelayIterator { - WireDelay *ptr = nullptr; + WireDelayPOD *ptr = nullptr; void operator++() { ptr++; } bool operator!=(const WireDelayIterator &other) const { return ptr != other.ptr; } - WireDelay operator*() const { return *ptr; } + + WireDelay operator*() const { + WireDelay ret; + ret.wire.index = ptr->wire_index; + ret.delay = ptr->delay; + return ret; + } }; struct WireDelayRange @@ -113,6 +172,8 @@ struct WireDelayRange WireDelayIterator end() const { return e; } }; +// ----------------------------------------------------------------------- + struct BelPin { BelId bel; @@ -135,6 +196,8 @@ struct BelPinRange BelPinIterator end() const { return e; } }; +// ----------------------------------------------------------------------- + struct GuiLine { float x1, y1, x2, y2; @@ -153,46 +216,18 @@ struct ChipArgs } type = NONE; }; -struct BelInfo -{ - const char *name; -}; - -struct WireDelayPOD -{ - int32_t wire_index; - float delay; -}; - -struct BelPortPOD -{ - int32_t bel_index; - int port_index; -}; - -struct WireInfo -{ - const char *name; - int num_uphill, num_downhill, num_bidir; - WireDelayPOD *wires_uphill, *wires_downhill, *wires_bidir; - - int num_bels_downhill; - BelPortPOD bel_uphill; - BelPortPOD *bels_downhill; -}; - struct Chip { int num_bels, num_wires; - BelInfo *bel_data; - WireInfo *wire_data; + BelInfoPOD *bel_data; + WireInfoPOD *wire_data; // ... Chip(ChipArgs args); - void setBelActive(BelId bel, bool active); - bool getBelActive(BelId bel); + void setBelActive(BelId, bool) { } + bool getBelActive(BelId) { return true; } BelId getBelByName(IdString name) const; WireId getWireByName(IdString name) const; @@ -208,11 +243,43 @@ struct Chip vector<GuiLine> getBelGuiLines(BelId bel) const; vector<GuiLine> getWireGuiLines(WireId wire) const; - WireRange getWires() const; - WireDelayRange getWiresUphill(WireId wire) const; - WireDelayRange getWiresDownhill(WireId wire) const; - WireDelayRange getWiresBidir(WireId wire) const; - WireDelayRange getWireAliases(WireId wire) const; + AllWiresRange getWires() const + { + AllWiresRange range; + range.b.cursor = 0; + range.e.cursor = num_wires; + return range; + } + + WireDelayRange getWiresUphill(WireId wire) const + { + WireDelayRange range; + range.b.ptr = wire_data[wire.index].wires_uphill; + range.e.ptr = wire_data[wire.index].wires_uphill + wire_data[wire.index].num_uphill; + return range; + } + + WireDelayRange getWiresDownhill(WireId wire) const + { + WireDelayRange range; + range.b.ptr = wire_data[wire.index].wires_downhill; + range.e.ptr = wire_data[wire.index].wires_downhill + wire_data[wire.index].num_downhill; + return range; + } + + WireDelayRange getWiresBidir(WireId wire) const + { + WireDelayRange range; + range.b.ptr = wire_data[wire.index].wires_bidir; + range.e.ptr = wire_data[wire.index].wires_bidir + wire_data[wire.index].num_bidir; + return range; + } + + WireDelayRange getWireAliases(WireId wire) const + { + WireDelayRange range; + return range; + } // the following will only operate on / return "active" BELs // multiple active uphill BELs for a wire will cause a runtime error |