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author | David Shah <dave@ds0.me> | 2020-10-12 10:18:23 +0100 |
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committer | David Shah <dave@ds0.me> | 2020-11-30 08:45:27 +0000 |
commit | 12013b4c1f7a7fc653a06d1af8216680de468147 (patch) | |
tree | c23e5d347c0b8c5e785dba93744a40cb53eeb899 /nexus/arch.cc | |
parent | e2de234ef17320773f089b9d807aaacbbcae45d2 (diff) | |
download | nextpnr-12013b4c1f7a7fc653a06d1af8216680de468147.tar.gz nextpnr-12013b4c1f7a7fc653a06d1af8216680de468147.tar.bz2 nextpnr-12013b4c1f7a7fc653a06d1af8216680de468147.zip |
nexus: Lookup of package and IO pins
Signed-off-by: David Shah <dave@ds0.me>
Diffstat (limited to 'nexus/arch.cc')
-rw-r--r-- | nexus/arch.cc | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/nexus/arch.cc b/nexus/arch.cc index dfcf9510..f309c872 100644 --- a/nexus/arch.cc +++ b/nexus/arch.cc @@ -117,6 +117,22 @@ Arch::Arch(ArchArgs args) : args(args) for (size_t i = 0; i < chip_info->num_tiles; i++) { tileStatus[i].boundcells.resize(db->loctypes[chip_info->grid[i].loc_type].num_bels); } + // Validate and set up package + package_idx = -1; + for (size_t i = 0; i < chip_info->num_packages; i++) { + if (package == chip_info->packages[i].short_name.get()) { + package_idx = i; + break; + } + } + if (package_idx == -1) { + std::string all_packages = ""; + for (size_t i = 0; i < chip_info->num_packages; i++) { + all_packages += " "; + all_packages += chip_info->packages[i].short_name.get(); + } + log_error("Unknown package '%s'. Available package options:%s\n", package.c_str(), all_packages.c_str()); + } } // ----------------------------------------------------------------------- @@ -487,6 +503,79 @@ void Arch::set_cell_pinmux(CellInfo *cell, IdString pin, CellPinMux state) // ----------------------------------------------------------------------- +const PadInfoPOD *Arch::get_pin_data(const std::string &pin) const +{ + for (size_t i = 0; i < chip_info->num_pads; i++) { + const PadInfoPOD *pad = &(chip_info->pads[i]); + if (pin == pad->pins[package_idx].get()) + return pad; + } + return nullptr; +} + +Loc Arch::get_pad_loc(const PadInfoPOD *pad) const +{ + Loc loc; + switch (pad->side) { + case PIO_LEFT: + loc.x = 0; + loc.y = pad->offset; + break; + case PIO_RIGHT: + loc.x = chip_info->width - 1; + loc.y = pad->offset; + break; + case PIO_TOP: + loc.x = pad->offset; + loc.y = 0; + break; + case PIO_BOTTOM: + loc.x = pad->offset; + loc.y = chip_info->height - 1; + } + loc.z = pad->pio_index; + return loc; +} + +BelId Arch::get_pin_bel(const std::string &pin) const +{ + const PadInfoPOD *pad = get_pin_data(pin); + if (pad == nullptr) + return BelId(); + return getBelByLocation(get_pad_loc(pad)); +} + +const PadInfoPOD *Arch::get_bel_pad(BelId bel) const +{ + Loc loc = getBelLocation(bel); + int side = -1, offset = -1; + // Convert (x, y) to (side, offset) + if (loc.x == 0) { + side = PIO_LEFT; + offset = loc.y; + } else if (loc.x == (chip_info->width - 1)) { + side = PIO_RIGHT; + offset = loc.y; + } else if (loc.y == 0) { + side = PIO_TOP; + offset = loc.x; + } else if (loc.y == (chip_info->height - 1)) { + side = PIO_BOTTOM; + offset = loc.x; + } else { + return nullptr; + } + // Lookup in the list of pads + for (size_t i = 0; i < chip_info->num_pads; i++) { + const PadInfoPOD *pad = &(chip_info->pads[i]); + if (pad->side == side && pad->offset == offset && pad->pio_index == loc.z) + return pad; + } + return nullptr; +} + +// ----------------------------------------------------------------------- + #ifdef WITH_HEAP const std::string Arch::defaultPlacer = "heap"; #else |