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Merge pull request #801 from yrabbit/TRBL-style

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gowin: Add the IO[TRBL]style placement recognition
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gatecat 2021-08-23 21:58:08 +01:00 committed by GitHub
commit 86393c8c8e
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1 changed files with 37 additions and 5 deletions
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42
gowin/arch.cc
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@ -482,14 +482,34 @@ DelayQuad Arch::getWireTypeDelay(IdString wire)
} }
} }
static Loc getLoc(std::smatch match, int maxX, int maxY)
{
int col = std::stoi(match[2]);
int row = 1; // Top
std::string side = match[1].str();
if (side == "R") {
row = col;
col = maxX;
} else if (side == "B") {
row = maxY;
} else if (side == "L") {
row = col;
col = 1;
}
int z = match[3].str()[0] - 'A';
return Loc(col - 1, row - 1, z);
}
void Arch::read_cst(std::istream &in) void Arch::read_cst(std::istream &in)
{ {
std::regex iobre = std::regex("IO_LOC +\"([^\"]+)\" +([^ ;]+) *;.*"); std::regex iobre = std::regex("IO_LOC +\"([^\"]+)\" +([^ ;]+) *;.*");
std::regex portre = std::regex("IO_PORT +\"([^\"]+)\" +([^;]+;).*"); std::regex portre = std::regex("IO_PORT +\"([^\"]+)\" +([^;]+;).*");
std::regex port_attrre = std::regex("([^ =;]+=[^ =;]+) *([^;]*;)"); std::regex port_attrre = std::regex("([^ =;]+=[^ =;]+) *([^;]*;)");
std::smatch match, match_attr; std::regex iobelre = std::regex("IO([TRBL])([0-9]+)([A-Z])");
std::string line; std::smatch match, match_attr, match_pinloc;
std::string line, pinline;
bool io_loc; bool io_loc;
while (!in.eof()) { while (!in.eof()) {
std::getline(in, line); std::getline(in, line);
io_loc = true; io_loc = true;
@ -512,11 +532,23 @@ void Arch::read_cst(std::istream &in)
} }
if (io_loc) { // IO_LOC name pin if (io_loc) { // IO_LOC name pin
IdString pinname = id(match[2]); IdString pinname = id(match[2]);
pinline = match[2];
const PairPOD *belname = pairLookup(package->pins.get(), package->num_pins, pinname.index); const PairPOD *belname = pairLookup(package->pins.get(), package->num_pins, pinname.index);
if (belname == nullptr) if (belname != nullptr) {
std::string bel = IdString(belname->src_id).str(this);
it->second->attrs[IdString(ID_BEL)] = bel;
} else if (std::regex_match(pinline, match_pinloc, iobelre)) {
// may be it's IOx#[AB] style?
Loc loc = getLoc(match_pinloc, getGridDimX(), getGridDimY());
BelId bel = getBelByLocation(loc);
if (bel == BelId()) {
log_error("Pin %s not found\n", pinline.c_str());
}
std::string belname = getCtx()->nameOfBel(bel);
it->second->attrs[IdString(ID_BEL)] = belname;
} else {
log_error("Pin %s not found\n", pinname.c_str(this)); log_error("Pin %s not found\n", pinname.c_str(this));
std::string bel = IdString(belname->src_id).str(this); }
it->second->attrs[IdString(ID_BEL)] = bel;
} else { // IO_PORT attr=value } else { // IO_PORT attr=value
std::string attr_val = match[2]; std::string attr_val = match[2];
while (std::regex_match(attr_val, match_attr, port_attrre)) { while (std::regex_match(attr_val, match_attr, port_attrre)) {