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machxo2: Implement all of Bel API except getBelPinWire.

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This commit is contained in:
William D. Jones 2020-12-07 11:48:15 -05:00 committed by gatecat
parent 138519d820
commit bbc683dd75
2 changed files with 79 additions and 12 deletions
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79
machxo2/arch.cc
View File

@ -29,6 +29,18 @@
NEXTPNR_NAMESPACE_BEGIN
static std::tuple<int, int, std::string> split_identifier_name(const std::string &name)
{
size_t first_slash = name.find('/');
NPNR_ASSERT(first_slash != std::string::npos);
size_t second_slash = name.find('/', first_slash + 1);
NPNR_ASSERT(second_slash != std::string::npos);
return std::make_tuple(std::stoi(name.substr(1, first_slash)),
std::stoi(name.substr(first_slash + 2, second_slash - first_slash)),
name.substr(second_slash + 1));
};
// -----------------------------------------------------------------------
void IdString::initialize_arch(const BaseCtx *ctx) {
@ -134,7 +146,25 @@ IdString Arch::archArgsToId(ArchArgs args) const
BelId Arch::getBelByName(IdString name) const
{
return BelId();
BelId ret;
auto it = bel_by_name.find(name);
if (it != bel_by_name.end())
return it->second;
Location loc;
std::string basename;
std::tie(loc.x, loc.y, basename) = split_identifier_name(name.str(this));
ret.location = loc;
const TileTypePOD *tilei = tileInfo(ret);
for (int i = 0; i < tilei->num_bels; i++) {
if (std::strcmp(tilei->bel_data[i].name.get(), basename.c_str()) == 0) {
ret.index = i;
break;
}
}
if (ret.index >= 0)
bel_by_name[name] = ret;
return ret;
}
BelId Arch::getBelByLocation(Loc loc) const
@ -159,16 +189,25 @@ BelId Arch::getBelByLocation(Loc loc) const
return BelId();
}
const std::vector<BelId> &Arch::getBelsByTile(int x, int y) const { return bel_id_dummy; }
BelRange Arch::getBelsByTile(int x, int y) const
{
BelRange br;
br.b.cursor_tile = y * chip_info->width + x;
br.e.cursor_tile = y * chip_info->width + x;
br.b.cursor_index = 0;
br.e.cursor_index = chip_info->tiles[y * chip_info->width + x].num_bels - 1;
br.b.chip = chip_info;
br.e.chip = chip_info;
if (br.e.cursor_index == -1)
++br.e.cursor_index;
else
++br.e;
return br;
}
bool Arch::getBelGlobalBuf(BelId bel) const { return false; }
uint32_t Arch::getBelChecksum(BelId bel) const
{
// FIXME
return 0;
}
const std::map<IdString, std::string> &Arch::getBelAttrs(BelId bel) const { return attrs_dummy; }
WireId Arch::getBelPinWire(BelId bel, IdString pin) const
@ -176,11 +215,33 @@ WireId Arch::getBelPinWire(BelId bel, IdString pin) const
return WireId();
}
PortType Arch::getBelPinType(BelId bel, IdString pin) const { return PortType(); }
PortType Arch::getBelPinType(BelId bel, IdString pin) const
{
NPNR_ASSERT(bel != BelId());
int num_bel_wires = tileInfo(bel)->bel_data[bel.index].num_bel_wires;
const BelWirePOD *bel_wires = &*tileInfo(bel)->bel_data[bel.index].bel_wires;
for(int i = 0; i < num_bel_wires; i++)
if(bel_wires[i].port == pin.index)
return PortType(bel_wires[i].dir);
return PORT_INOUT;
}
std::vector<IdString> Arch::getBelPins(BelId bel) const
{
std::vector<IdString> ret;
NPNR_ASSERT(bel != BelId());
int num_bel_wires = tileInfo(bel)->bel_data[bel.index].num_bel_wires;
const BelWirePOD *bel_wires = &*tileInfo(bel)->bel_data[bel.index].bel_wires;
for(int i = 0; i < num_bel_wires; i++) {
IdString id(bel_wires[i].port);
ret.push_back(id);
}
return ret;
}

12
machxo2/arch.h
View File

@ -50,7 +50,7 @@ NPNR_PACKED_STRUCT(struct BelWirePOD {
LocationPOD rel_wire_loc;
int32_t wire_index;
int32_t port;
int32_t dir;
int32_t dir; // FIXME: Corresponds to "type" in ECP5.
});
NPNR_PACKED_STRUCT(struct BelInfoPOD {
@ -312,6 +312,7 @@ struct Arch : BaseCtx
const PackageInfoPOD *package_info;
std::vector<CellInfo *> bel_to_cell;
mutable std::unordered_map<IdString, BelId> bel_by_name;
// Placeholders to be removed.
std::unordered_map<Loc, BelId> bel_by_loc;
@ -377,9 +378,14 @@ struct Arch : BaseCtx
}
BelId getBelByLocation(Loc loc) const;
const std::vector<BelId> &getBelsByTile(int x, int y) const;
BelRange getBelsByTile(int x, int y) const;
bool getBelGlobalBuf(BelId bel) const;
uint32_t getBelChecksum(BelId bel) const;
uint32_t getBelChecksum(BelId bel) const
{
// FIXME- Copied from ECP5. Should be return val from getBelFlatIndex?
return bel.index;
}
void bindBel(BelId bel, CellInfo *cell, PlaceStrength strength)
{