nexus: Working on validity checking

Signed-off-by: David Shah <dave@ds0.me>

1 files changed, 48 insertions, 0 deletions

diff --git a/nexus/pack.cc b/nexus/pack.cc
index c1e3664f..2b88a095 100644
--- a/nexus/pack.cc
+++ b/nexus/pack.cc
@@ -25,6 +25,10 @@
 
 NEXTPNR_NAMESPACE_BEGIN
 
+namespace {
+bool is_enabled(CellInfo *ci, IdString prop) { return str_or_default(ci->params, prop, "") == "ENABLED"; }
+} // namespace
+
 struct NexusPacker
 {
     Context *ctx;
@@ -182,4 +186,48 @@ bool Arch::pack()
     return true;
 }
 
+// -----------------------------------------------------------------------
+
+void Arch::assignArchInfo()
+{
+    for (auto cell : sorted(cells)) {
+        assignCellInfo(cell.second);
+    }
+}
+
+void Arch::assignCellInfo(CellInfo *cell)
+{
+    if (cell->type == id_OXIDE_COMB) {
+        cell->lutInfo.is_memory = str_or_default(cell->params, id_MODE, "LOGIC") == "DPRAM";
+        cell->lutInfo.is_carry = str_or_default(cell->params, id_MODE, "LOGIC") == "CCU2";
+        cell->lutInfo.mux2_used = port_used(cell, id_OFX);
+        cell->lutInfo.f = get_net_or_empty(cell, id_F);
+        cell->lutInfo.ofx = get_net_or_empty(cell, id_OFX);
+    } else if (cell->type == id_OXIDE_FF) {
+        cell->ffInfo.ctrlset.async = str_or_default(cell->params, id_SRMODE, "LSR_OVER_CE") == "ASYNC";
+        cell->ffInfo.ctrlset.regddr_en = is_enabled(cell, id_REGDDR);
+        cell->ffInfo.ctrlset.gsr_en = is_enabled(cell, id_GSR);
+        cell->ffInfo.ctrlset.clkmux = id(str_or_default(cell->params, id_CLKMUX, "CLK")).index;
+        cell->ffInfo.ctrlset.cemux = id(str_or_default(cell->params, id_CEMUX, "CE")).index;
+        cell->ffInfo.ctrlset.lsrmux = id(str_or_default(cell->params, id_LSRMUX, "LSR")).index;
+        cell->ffInfo.ctrlset.clk = get_net_or_empty(cell, id_CLK);
+        cell->ffInfo.ctrlset.ce = get_net_or_empty(cell, id_CE);
+        cell->ffInfo.ctrlset.lsr = get_net_or_empty(cell, id_LSR);
+        cell->ffInfo.di = get_net_or_empty(cell, id_DI);
+        cell->ffInfo.m = get_net_or_empty(cell, id_M);
+    } else if (cell->type == ID_RAMW) {
+        cell->ffInfo.ctrlset.async = false;
+        cell->ffInfo.ctrlset.regddr_en = false;
+        cell->ffInfo.ctrlset.gsr_en = false;
+        cell->ffInfo.ctrlset.clkmux = id(str_or_default(cell->params, id_CLKMUX, "CLK")).index;
+        cell->ffInfo.ctrlset.cemux = ID_CE;
+        cell->ffInfo.ctrlset.lsrmux = id(str_or_default(cell->params, id_LSRMUX, "LSR")).index;
+        cell->ffInfo.ctrlset.clk = get_net_or_empty(cell, id_CLK);
+        cell->ffInfo.ctrlset.ce = nullptr;
+        cell->ffInfo.ctrlset.lsr = get_net_or_empty(cell, id_LSR);
+        cell->ffInfo.di = nullptr;
+        cell->ffInfo.m = nullptr;
+    }
+}
+
 NEXTPNR_NAMESPACE_END
\ No newline at end of file