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#include <stdint.h>
#include <string>
// replace with proper IdString later
typedef std::string IdString;
// -------------------------------------------------------
// Arch-specific declarations
#ifdef ARCH_ICE40
struct ObjId
{
uint8_t tile_x = 0, tile_y = 0;
uint16_t index = 0;
bool nil() const {
return !tile_x && !tile_y && !index;
}
} __attribute__((packed));
struct ObjIterator
{
// ...
ObjId operator*() const;
};
struct ObjRange
{
ObjIterator begin();
ObjIterator end();
};
struct BelPin
{
ObjId bel;
IdString pin;
};
struct BelPinIterator
{
// ...
BelPin operator*() const;
};
struct BelPinRange
{
BelPinIterator begin();
BelPinIterator end();
};
struct GuiLine
{
float x1, y1, x2, y2;
};
struct Chip
{
// ...
Chip(std::string cfg);
void setBelActive(ObjId bel, bool active);
bool getBelActive(ObjId bel);
ObjId getObjByName(IdString name) const;
IdString getObjName(ObjId obj) const;
ObjRange getBels() const;
ObjRange getBelsByType(IdString type) const;
IdString getBelType(ObjId bel) const;
void getObjPosition(ObjId obj, float &x, float &y) const;
vector<GuiLine> getGuiLines(ObjId obj) const;
ObjRange getWires() const;
ObjRange getWiresUphill(ObjId wire) const;
ObjRange getWiresDownhill(ObjId wire) const;
ObjRange getWiresBidir(ObjId wire) const;
ObjRange getWireAliases(ObjId wire) const;
// the following will only operate on / return "active" BELs
// multiple active uphill BELs for a wire will cause a runtime error
ObjId getWireBelPin(ObjId bel, IdString pin) const;
BelPin getBelPinUphill(ObjId wire) const;
BelPinRange getBelPinsDownhill(ObjId wire) const;
};
#endif
// -------------------------------------------------------
// Generic declarations
struct PortRef
{
IdString cell_name;
IdString port_name;
};
struct NetInfo
{
IdString name;
PortRef driver;
vector<PortRef> users;
dict<IdString, std::string> attrs;
// wire -> delay
dict<ObjId, float> wires;
};
enum PortType
{
PORT_IN = 0,
PORT_OUT = 1,
PORT_INOUT = 2
};
struct PortInfo
{
IdString name, net;
PortType type;
};
struct CellInfo
{
IdString name, type;
dict<IdString, PortInfo> ports;
dict<IdString, std::string> attrs, params;
ObjId bel;
// cell_port -> bel_pin
dict<IdString, IdString> pins;
};
struct Design
{
struct Chip;
Design(std::string chipCfg) : Chip(chipCfg) {
// ...
}
dict<IdString, *NetInfo> nets;
dict<IdString, *CellInfo> cells;
};
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