Add Arch constructor

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

2 files changed, 120 insertions, 2 deletions

diff --git a/nexus/arch.cc b/nexus/arch.cc
new file mode 100644
index 00000000..bd1728dc
--- /dev/null
+++ b/nexus/arch.cc
@@ -0,0 +1,109 @@
+/*
+ *  nextpnr -- Next Generation Place and Route
+ *
+ *  Copyright (C) 2020  David Shah <dave@ds0.me>
+ *
+ *
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include <boost/algorithm/string.hpp>
+
+#include "log.h"
+#include "nextpnr.h"
+#include "placer1.h"
+#include "placer_heap.h"
+#include "router1.h"
+#include "timing.h"
+#include "util.h"
+
+NEXTPNR_NAMESPACE_BEGIN
+
+// -----------------------------------------------------------------------
+
+void IdString::initialize_arch(const BaseCtx *ctx)
+{
+#define X(t) initialize_add(ctx, #t, ID_##t);
+
+#include "constids.inc"
+
+#undef X
+}
+
+// -----------------------------------------------------------------------
+
+static const DatabasePOD *get_chipdb(const RelPtr<DatabasePOD> *ptr) { return ptr->get(); }
+
+// -----------------------------------------------------------------------
+
+Arch::Arch(ArchArgs args) : args(args)
+{
+    // Parse device string
+    if (boost::starts_with(args.device, "LIFCL")) {
+        family = "LIFCL";
+    } else {
+        log_error("Unknown device string '%s' (expected device name like 'LIFCL-40-8SG72C')\n", args.device.c_str());
+    }
+    auto last_sep = args.device.rfind('-');
+    if (last_sep == std::string::npos)
+        log_error("Unknown device string '%s' (expected device name like 'LIFCL-40-8SG72C')\n", args.device.c_str());
+    device = args.device.substr(0, last_sep);
+    speed = args.device.substr(last_sep + 1, 1);
+    auto package_end = args.device.find_last_of("0123456789");
+    if (package_end == std::string::npos || package_end < last_sep)
+        log_error("Unknown device string '%s' (expected device name like 'LIFCL-40-8SG72C')\n", args.device.c_str());
+    package = args.device.substr(last_sep + 2, (package_end - (last_sep + 2)) + 1);
+    rating = args.device.substr(package_end + 1);
+    // Load database (FIXME: baked-in databases too)
+    try {
+        blob_file.open(args.chipdb);
+        if (!blob_file.is_open())
+            log_error("Unable to read chipdb %s\n", args.chipdb.c_str());
+        const char *blob = reinterpret_cast<const char *>(blob_file.data());
+        db = get_chipdb(reinterpret_cast<const RelPtr<DatabasePOD> *>(blob));
+    } catch (...) {
+        log_error("Unable to read chipdb %s\n", args.chipdb.c_str());
+    }
+    // Check database version and family
+    if (db->version != bba_version) {
+        log_error("Provided database version %d is %s than nextpnr version %d, please rebuild database/nextpnr.\n",
+                  db->version, (db->version > bba_version) ? "newer" : "older", bba_version);
+    }
+    if (db->family.get() != family) {
+        log_error("Database is for family '%s' but provided device is family '%s'.\n", db->family.get(),
+                  family.c_str());
+    }
+    // Set up chip_info
+    chip_info = nullptr;
+    for (size_t i = 0; i < db->num_chips; i++) {
+        auto &chip = db->chips[i];
+        if (chip.device_name.get() == device) {
+            chip_info = &chip;
+            break;
+        }
+    }
+    if (!chip_info)
+        log_error("Unknown device '%s'.\n", device.c_str());
+    // Set up bba IdStrings
+    for (size_t i = 0; i < db->ids->num_bba_ids; i++) {
+        IdString::initialize_add(this, db->ids->bba_id_strs[i].get(), uint32_t(i) + db->ids->num_file_ids);
+    }
+    // Set up validity structures
+    tileStatus.resize(chip_info->num_tiles);
+    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);
+    }
+}
+
+NEXTPNR_NAMESPACE_END
\ No newline at end of file
diff --git a/nexus/arch.h b/nexus/arch.h
index 349935cd..2c8bad7e 100644
--- a/nexus/arch.h
+++ b/nexus/arch.h
@@ -180,6 +180,7 @@ NPNR_PACKED_STRUCT(struct DatabasePOD {
     RelPtr<char> family;
     RelPtr<ChipInfoPOD> chips;
     RelPtr<LocTypePOD> loctypes;
+    RelPtr<IdStringDBPOD> ids;
 });
 
 // -----------------------------------------------------------------------
@@ -562,12 +563,12 @@ struct ArchArgs
 {
     std::string chipdb;
     std::string device;
-    std::string package;
 };
 
 struct Arch : BaseCtx
 {
     ArchArgs args;
+    std::string family, device, package, speed, rating;
     Arch(ArchArgs args);
 
     // -------------------------------------------------
@@ -758,6 +759,14 @@ struct Arch : BaseCtx
         return w2n == wire_to_net.end() ? nullptr : w2n->second;
     }
 
+    NetInfo *getConflictingWireNet(WireId wire) const
+    {
+        NPNR_ASSERT(wire != WireId());
+        auto w2n = wire_to_net.find(wire);
+        return w2n == wire_to_net.end() ? nullptr : w2n->second;
+    }
+
+
     WireId getConflictingWireWire(WireId wire) const { return wire; }
 
     DelayInfo getWireDelay(WireId wire) const
@@ -1047,7 +1056,7 @@ struct Arch : BaseCtx
     {
         return chip_rel_tile(chip_info, base, rel_x, rel_y, next);
     }
-    inline const WireId canonical_wire(int32_t tile, uint16_t index) const
+    inline WireId canonical_wire(int32_t tile, uint16_t index) const
     {
         return chip_canonical_wire(db, chip_info, tile, index);
     }