From 9bd7ef5f5fcb77e36a988b0967a59965cfe55192 Mon Sep 17 00:00:00 2001
From: gatecat <gatecat@ds0.me>
Date: Mon, 3 May 2021 18:54:31 +0100
Subject: [PATCH] cyclonev: Preparations for validity checking

Signed-off-by: gatecat <gatecat@ds0.me>
---
 cyclonev/arch.h     |  6 ++++++
 cyclonev/archdefs.h | 31 +++++++++++++++++++++++++++++++
 2 files changed, 37 insertions(+)

diff --git a/cyclonev/arch.h b/cyclonev/arch.h
index 15c647aa..53fa4174 100644
--- a/cyclonev/arch.h
+++ b/cyclonev/arch.h
@@ -336,6 +336,12 @@ struct Arch : BaseArch<ArchRanges>
 
     // -------------------------------------------------
 
+    bool is_comb_cell(IdString cell_type) const;
+    bool is_alm_legal(uint32_t lab, uint8_t alm) const;
+    bool is_lab_ctrlset_legal(uint32_t lab) const;
+
+    // -------------------------------------------------
+
     static const std::string defaultPlacer;
     static const std::vector<std::string> availablePlacers;
     static const std::string defaultRouter;
diff --git a/cyclonev/archdefs.h b/cyclonev/archdefs.h
index 249fd3d2..d6555887 100644
--- a/cyclonev/archdefs.h
+++ b/cyclonev/archdefs.h
@@ -124,8 +124,39 @@ struct ArchNetInfo
 {
 };
 
+struct ArchPinInfo
+{
+    // An inverter (INV) has been pushed onto this signal
+    bool inverted;
+    // The physical bel pins that this logical pin maps to
+    std::vector<IdString> bel_pins;
+};
+
+struct NetInfo;
+
 struct ArchCellInfo
 {
+    union
+    {
+        struct
+        {
+            // Store the nets here for fast validity checking (avoids too many map lookups in a hot path)
+            std::array<const NetInfo *, 7> input_sigs;
+            const NetInfo *comb_out;
+
+            int lut_input_count;
+            int lut_bits_count;
+
+            bool is_carry, is_shared, is_extended;
+        } combInfo;
+        struct
+        {
+            const NetInfo *clk, *ena, *aclr, *sclr, *sload, *sdata, *datain;
+            bool clk_inv, ena_inv, aclr_inv, sclr_inv, sload_inv;
+        } ffInfo;
+    };
+
+    std::unordered_map<IdString, ArchPinInfo> pin_data;
 };
 
 NEXTPNR_NAMESPACE_END