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authorClifford Wolf <clifford@clifford.at>2013-03-28 10:12:50 +0100
committerClifford Wolf <clifford@clifford.at>2013-03-28 10:12:50 +0100
commit8edf4f378a5463f0d0769a11d708148dc505d948 (patch)
treeff4474bbf40aeff175b64976340ff788a59e56f6 /passes
parent7bfc7b61a812e10177674def2f640d82cee49791 (diff)
Added proper TECHMAP_FAIL support and added support for the celltype attribute in the map file
Diffstat (limited to 'passes')
-rw-r--r--passes/techmap/techmap.cc213
1 files changed, 129 insertions, 84 deletions
diff --git a/passes/techmap/techmap.cc b/passes/techmap/techmap.cc
index 5fd5858a..ae62bcb1 100644
--- a/passes/techmap/techmap.cc
+++ b/passes/techmap/techmap.cc
@@ -47,8 +47,93 @@ static void apply_prefix(std::string prefix, RTLIL::SigSpec &sig, RTLIL::Module
}
std::map<std::pair<RTLIL::IdString, std::map<RTLIL::IdString, RTLIL::Const>>, RTLIL::Module*> techmap_cache;
+std::map<RTLIL::Module*, bool> techmap_fail_cache;
-static bool techmap_module(RTLIL::Design *design, RTLIL::Module *module, RTLIL::Design *map)
+static bool techmap_fail_check(RTLIL::Module *module)
+{
+ if (module == NULL)
+ return false;
+
+ if (techmap_fail_cache.count(module) > 0)
+ return techmap_fail_cache.at(module);
+
+ for (auto &it : module->wires) {
+ std::string name = it.first;
+ if (name == "\\TECHMAP_FAIL")
+ return techmap_fail_cache[module] = true;
+ if (name.size() > 13 && name[0] == '\\' && name.substr(name.size()-13) == ".TECHMAP_FAIL")
+ return techmap_fail_cache[module] = true;
+ }
+
+ return techmap_fail_cache[module] = false;
+}
+
+static void techmap_module_worker(RTLIL::Design *design, RTLIL::Module *module, RTLIL::Cell *cell, RTLIL::Module *tpl)
+{
+ log("Mapping `%s.%s' using `%s'.\n", RTLIL::id2cstr(module->name), RTLIL::id2cstr(cell->name), RTLIL::id2cstr(tpl->name));
+
+ if (tpl->memories.size() != 0)
+ log_error("Technology map yielded memories -> this is not supported.");
+
+ if (tpl->processes.size() != 0)
+ log_error("Technology map yielded processes -> this is not supported.");
+
+ for (auto &it : tpl->wires) {
+ RTLIL::Wire *w = new RTLIL::Wire(*it.second);
+ apply_prefix(cell->name, w->name);
+ w->port_input = false;
+ w->port_output = false;
+ w->port_id = 0;
+ module->wires[w->name] = w;
+ design->select(module, w);
+ }
+
+ for (auto &it : tpl->cells) {
+ RTLIL::Cell *c = new RTLIL::Cell(*it.second);
+ if (c->type.substr(0, 2) == "\\$")
+ c->type = c->type.substr(1);
+ apply_prefix(cell->name, c->name);
+ for (auto &it2 : c->connections)
+ apply_prefix(cell->name, it2.second, module);
+ module->cells[c->name] = c;
+ design->select(module, c);
+ }
+
+ for (auto &it : tpl->connections) {
+ RTLIL::SigSig c = it;
+ apply_prefix(cell->name, c.first, module);
+ apply_prefix(cell->name, c.second, module);
+ module->connections.push_back(c);
+ }
+
+ for (auto &it : cell->connections) {
+ assert(tpl->wires.count(it.first));
+ assert(tpl->wires[it.first]->port_id > 0);
+ RTLIL::Wire *w = tpl->wires[it.first];
+ RTLIL::SigSig c;
+ if (w->port_output) {
+ c.first = it.second;
+ c.second = RTLIL::SigSpec(w);
+ apply_prefix(cell->name, c.second, module);
+ } else {
+ c.first = RTLIL::SigSpec(w);
+ c.second = it.second;
+ apply_prefix(cell->name, c.first, module);
+ }
+ if (c.second.width > c.first.width)
+ c.second.remove(c.first.width, c.second.width - c.first.width);
+ if (c.second.width < c.first.width)
+ c.second.append(RTLIL::SigSpec(RTLIL::State::S0, c.first.width - c.second.width));
+ assert(c.first.width == c.second.width);
+ module->connections.push_back(c);
+ }
+
+ module->cells.erase(cell->name);
+ delete cell;
+}
+
+static bool techmap_module(RTLIL::Design *design, RTLIL::Module *module, RTLIL::Design *map, std::set<RTLIL::Cell*> &handled_cells,
+ const std::map<RTLIL::IdString, std::set<RTLIL::IdString>> &celltypeMap)
{
if (!design->selected(module))
return false;
@@ -67,98 +152,41 @@ static bool techmap_module(RTLIL::Design *design, RTLIL::Module *module, RTLIL::
RTLIL::Cell *cell = module->cells[cell_name];
- if (!design->selected(module, cell))
+ if (!design->selected(module, cell) || handled_cells.count(cell) > 0)
continue;
- if (map->modules.count(cell->type) == 0)
+ if (celltypeMap.count(cell->type) == 0)
continue;
- RTLIL::Module *tpl = map->modules[cell->type];
- std::pair<RTLIL::IdString, std::map<RTLIL::IdString, RTLIL::Const>> key(cell->type, cell->parameters);
-
- if (techmap_cache.count(key) > 0) {
- tpl = techmap_cache[key];
- } else {
+ for (auto &tpl_name : celltypeMap.at(cell->type))
+ {
+ RTLIL::Module *tpl = map->modules[tpl_name];
+ std::pair<RTLIL::IdString, std::map<RTLIL::IdString, RTLIL::Const>> key(cell->type, cell->parameters);
std::string derived_name = cell->type;
- if (cell->parameters.size() != 0) {
- derived_name = tpl->derive(map, cell->parameters);
- tpl = map->modules[derived_name];
- log_header("Continuing TECHMAP pass.\n");
- }
- for (auto &cit : tpl->cells)
- if (cit.second->type == "\\TECHMAP_FAILED") {
- log("Not using module `%s' from techmap as it contains a TECHMAP_FAILED marker cell.\n", derived_name.c_str());
- tpl = NULL;
- break;
- }
- techmap_cache[key] = tpl;
- }
-
- if (tpl == NULL)
- goto next_cell;
-
- log("Mapping `%s.%s' using `%s'.\n", module->name.c_str(), cell_name.c_str(), tpl->name.c_str());
-
- if (tpl->memories.size() != 0)
- log_error("Technology map yielded memories -> this is not supported.");
-
- if (tpl->processes.size() != 0)
- log_error("Technology map yielded processes -> this is not supported.");
-
- for (auto &it : tpl->wires) {
- RTLIL::Wire *w = new RTLIL::Wire(*it.second);
- apply_prefix(cell_name, w->name);
- w->port_input = false;
- w->port_output = false;
- w->port_id = 0;
- module->wires[w->name] = w;
- design->select(module, w);
- }
-
- for (auto &it : tpl->cells) {
- RTLIL::Cell *c = new RTLIL::Cell(*it.second);
- if (c->type.substr(0, 2) == "\\$")
- c->type = c->type.substr(1);
- apply_prefix(cell_name, c->name);
- for (auto &it2 : c->connections)
- apply_prefix(cell_name, it2.second, module);
- module->cells[c->name] = c;
- design->select(module, c);
- }
-
- for (auto &it : tpl->connections) {
- RTLIL::SigSig c = it;
- apply_prefix(cell_name, c.first, module);
- apply_prefix(cell_name, c.second, module);
- module->connections.push_back(c);
- }
- for (auto &it : cell->connections) {
- assert(tpl->wires.count(it.first));
- assert(tpl->wires[it.first]->port_id > 0);
- RTLIL::Wire *w = tpl->wires[it.first];
- RTLIL::SigSig c;
- if (w->port_output) {
- c.first = it.second;
- c.second = RTLIL::SigSpec(w);
- apply_prefix(cell_name, c.second, module);
+ if (techmap_cache.count(key) > 0) {
+ tpl = techmap_cache[key];
} else {
- c.first = RTLIL::SigSpec(w);
- c.second = it.second;
- apply_prefix(cell_name, c.first, module);
+ if (cell->parameters.size() != 0) {
+ derived_name = tpl->derive(map, cell->parameters);
+ tpl = map->modules[derived_name];
+ log_header("Continuing TECHMAP pass.\n");
+ }
+ techmap_cache[key] = tpl;
+ }
+
+ if (techmap_fail_check(tpl)) {
+ log("Not using module `%s' from techmap as it contains a TECHMAP_FAIL marker wire.\n", derived_name.c_str());
+ continue;
}
- if (c.second.width > c.first.width)
- c.second.remove(c.first.width, c.second.width - c.first.width);
- if (c.second.width < c.first.width)
- c.second.append(RTLIL::SigSpec(RTLIL::State::S0, c.first.width - c.second.width));
- assert(c.first.width == c.second.width);
- module->connections.push_back(c);
+
+ techmap_module_worker(design, module, cell, tpl);
+ did_something = true;
+ cell = NULL;
+ break;
}
- delete cell;
- module->cells.erase(cell_name);
- did_something = true;
- next_cell:;
+ handled_cells.insert(cell);
}
return did_something;
@@ -182,6 +210,13 @@ struct TechmapPass : public Pass {
log(" transforms the internal RTL cells to the internal gate\n");
log(" library.\n");
log("\n");
+ log("When a module in the map file has the 'celltype' attribute set, it will match\n");
+ log("cells with a type that match the text value of this attribute.\n");
+ log("\n");
+ log("When a module in the map file contains a wire with the name 'TECHMAP_FAIL' (or\n");
+ log("one matching '*.TECHMAP_FAIL') then no substitution will be performed. The\n");
+ log("module in the map file are tried in alphabetical order.\n");
+ log("\n");
log("See 'help extract' for a pass that does the opposite thing.\n");
log("\n");
}
@@ -220,16 +255,26 @@ struct TechmapPass : public Pass {
}
map->modules.swap(modules_new);
+ std::map<RTLIL::IdString, std::set<RTLIL::IdString>> celltypeMap;
+ for (auto &it : map->modules) {
+ if (it.second->attributes.count("\\celltype") && !it.second->attributes.at("\\celltype").str.empty()) {
+ celltypeMap[RTLIL::escape_id(it.second->attributes.at("\\celltype").str)].insert(it.first);
+ } else
+ celltypeMap[it.first].insert(it.first);
+ }
+
bool did_something = true;
+ std::set<RTLIL::Cell*> handled_cells;
while (did_something) {
did_something = false;
for (auto &mod_it : design->modules)
- if (techmap_module(design, mod_it.second, map))
+ if (techmap_module(design, mod_it.second, map, handled_cells, celltypeMap))
did_something = true;
}
log("No more expansions possible.\n");
techmap_cache.clear();
+ techmap_fail_cache.clear();
delete map;
log_pop();
}