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Merge remote-tracking branch 'origin/clifford/fix1381' into xc7dsp

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This commit is contained in:
Eddie Hung 2019-09-19 15:47:41 -07:00
commit b88f0f6450
14 changed files with 723 additions and 95 deletions
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1
passes/techmap/Makefile.inc
View file

@ -40,6 +40,7 @@ OBJS += passes/techmap/attrmap.o
OBJS += passes/techmap/zinit.o
OBJS += passes/techmap/dff2dffs.o
OBJS += passes/techmap/flowmap.o
OBJS += passes/techmap/extractinv.o
endif
GENFILES += passes/techmap/techmap.inc

123
passes/techmap/extractinv.cc Normal file
View file

@ -0,0 +1,123 @@
/*
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
* Copyright (C) 2019 Marcin Kościelnicki <mwk@0x04.net>
*
* 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 "kernel/yosys.h"
#include "kernel/sigtools.h"
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
void split_portname_pair(std::string &port1, std::string &port2)
{
size_t pos = port1.find_first_of(':');
if (pos != std::string::npos) {
port2 = port1.substr(pos+1);
port1 = port1.substr(0, pos);
}
}
struct ExtractinvPass : public Pass {
ExtractinvPass() : Pass("extractinv", "extract explicit inverter cells for invertible cell pins") { }
void help() YS_OVERRIDE
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" extractinv [options] [selection]\n");
log("\n");
log("Searches the design for all cells with invertible pins controlled by a cell\n");
log("parameter (eg. IS_CLK_INVERTED on many Xilinx cells) and removes the parameter.\n");
log("If the parameter was set to 1, inserts an explicit inverter cell in front of\n");
log("the pin instead. Normally used for output to ISE, which does not support the\n");
log("inversion parameters.\n");
log("\n");
log("To mark a cell port as invertible, use (* invertible_pin = \"param_name\" *)\n");
log("on the wire in the blackbox module. The parameter value should have\n");
log("the same width as the port, and will be effectively XORed with it.\n");
log("\n");
log(" -inv <celltype> <portname_out>:<portname_in>\n");
log(" Specifies the cell type to use for the inverters and its port names.\n");
log(" This option is required.\n");
log("\n");
}
void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
{
log_header(design, "Executing EXTRACTINV pass (extracting pin inverters).\n");
std::string inv_celltype, inv_portname, inv_portname2;
size_t argidx;
for (argidx = 1; argidx < args.size(); argidx++)
{
std::string arg = args[argidx];
if (arg == "-inv" && argidx+2 < args.size()) {
inv_celltype = args[++argidx];
inv_portname = args[++argidx];
split_portname_pair(inv_portname, inv_portname2);
continue;
}
break;
}
extra_args(args, argidx, design);
if (inv_celltype.empty())
log_error("The -inv option is required.\n");
for (auto module : design->selected_modules())
{
for (auto cell : module->selected_cells())
for (auto port : cell->connections()) {
auto cell_module = design->module(cell->type);
if (!cell_module)
continue;
auto cell_wire = cell_module->wire(port.first);
if (!cell_wire)
continue;
auto it = cell_wire->attributes.find("\\invertible_pin");
if (it == cell_wire->attributes.end())
continue;
IdString param_name = RTLIL::escape_id(it->second.decode_string());
auto it2 = cell->parameters.find(param_name);
// Inversion not used -- skip.
if (it2 == cell->parameters.end())
continue;
SigSpec sig = port.second;
if (it2->second.size() != sig.size())
log_error("The inversion parameter needs to be the same width as the port (%s.%s port %s parameter %s)", log_id(module->name), log_id(cell->type), log_id(port.first), log_id(param_name));
RTLIL::Const invmask = it2->second;
cell->parameters.erase(param_name);
if (invmask.is_fully_zero())
continue;
Wire *iwire = module->addWire(NEW_ID, sig.size());
for (int i = 0; i < sig.size(); i++)
if (invmask[i] == State::S1) {
RTLIL::Cell *icell = module->addCell(NEW_ID, RTLIL::escape_id(inv_celltype));
icell->setPort(RTLIL::escape_id(inv_portname), SigSpec(iwire, i));
icell->setPort(RTLIL::escape_id(inv_portname2), sig[i]);
log("Inserting %s on %s.%s.%s[%d].\n", inv_celltype.c_str(), log_id(module), log_id(cell->type), log_id(port.first), i);
sig[i] = SigBit(iwire, i);
}
cell->setPort(port.first, sig);
}
}
}
} ExtractinvPass;
PRIVATE_NAMESPACE_END

54
passes/techmap/techmap.cc
View file

@ -206,10 +206,27 @@ struct TechmapWorker
std::map<RTLIL::IdString, RTLIL::IdString> positional_ports;
dict<Wire*, IdString> temp_renamed_wires;
pool<SigBit> autopurge_tpl_bits;
for (auto &it : tpl->wires_) {
for (auto &it : tpl->wires_)
{
if (it.second->port_id > 0)
positional_ports[stringf("$%d", it.second->port_id)] = it.first;
{
IdString posportname = stringf("$%d", it.second->port_id);
positional_ports[posportname] = it.first;
if (!flatten_mode && it.second->get_bool_attribute(ID(techmap_autopurge)) &&
(!cell->hasPort(it.second->name) || !GetSize(cell->getPort(it.second->name))) &&
(!cell->hasPort(posportname) || !GetSize(cell->getPort(posportname))))
{
if (sigmaps.count(tpl) == 0)
sigmaps[tpl].set(tpl);
for (auto bit : sigmaps.at(tpl)(it.second))
if (bit.wire != nullptr)
autopurge_tpl_bits.insert(it.second);
}
}
IdString w_name = it.second->name;
apply_prefix(cell->name, w_name);
RTLIL::Wire *w = module->wire(w_name);
@ -232,6 +249,8 @@ struct TechmapWorker
w->port_input = false;
w->port_output = false;
w->port_id = 0;
if (!flatten_mode)
w->attributes.erase(ID(techmap_autopurge));
if (it.second->get_bool_attribute(ID(_techmap_special_)))
w->attributes.clear();
if (w->attributes.count(ID(src)))
@ -362,11 +381,31 @@ struct TechmapWorker
if (!flatten_mode && c->type.begins_with("\\$"))
c->type = c->type.substr(1);
for (auto &it2 : c->connections_) {
apply_prefix(cell->name, it2.second, module);
port_signal_map.apply(it2.second);
vector<IdString> autopurge_ports;
for (auto &it2 : c->connections_)
{
bool autopurge = false;
if (!autopurge_tpl_bits.empty()) {
autopurge = GetSize(it2.second) != 0;
for (auto &bit : sigmaps.at(tpl)(it2.second))
if (!autopurge_tpl_bits.count(bit)) {
autopurge = false;
break;
}
}
if (autopurge) {
autopurge_ports.push_back(it2.first);
} else {
apply_prefix(cell->name, it2.second, module);
port_signal_map.apply(it2.second);
}
}
for (auto &it2 : autopurge_ports)
c->unsetPort(it2);
if (c->type.in(ID($memrd), ID($memwr), ID($meminit))) {
IdString memid = c->getParam(ID(MEMID)).decode_string();
log_assert(memory_renames.count(memid) != 0);
@ -1064,6 +1103,11 @@ struct TechmapPass : public Pass {
log("will create a wrapper for the cell and then run the command string that the\n");
log("attribute is set to on the wrapper module.\n");
log("\n");
log("When a port on a module in the map file has the 'techmap_autopurge' attribute\n");
log("set, and that port is not connected in the instantiation that is mapped, then\n");
log("then a cell port connected only to such wires will be omitted in the mapped\n");
log("version of the circuit.\n");
log("\n");
log("All wires in the modules from the map file matching the pattern _TECHMAP_*\n");
log("or *._TECHMAP_* are special wires that are used to pass instructions from\n");
log("the mapping module to the techmap command. At the moment the following special\n");