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Merge pull request #243 from YosysHQ/ecp5lpf

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ecp5: Improve constraint-related error handling
This commit is contained in:
David Shah 2019-02-28 15:01:42 +00:00 committed by GitHub
commit 0279f63710
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 59 additions and 24 deletions
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60
ecp5/lpf.cc
View File

@ -17,6 +17,7 @@
*
*/
#include <boost/algorithm/string.hpp>
#include <sstream>
#include "log.h"
@ -25,7 +26,7 @@ NEXTPNR_NAMESPACE_BEGIN
bool Arch::applyLPF(std::string filename, std::istream &in)
{
auto isempty = [](const std::string &str) {
return std::all_of(str.begin(), str.end(), [](char c) { return isblank(c); });
return std::all_of(str.begin(), str.end(), [](char c) { return isblank(c) || c == '\r' || c == '\n'; });
};
auto strip_quotes = [](const std::string &str) {
if (str.at(0) == '"') {
@ -41,7 +42,9 @@ bool Arch::applyLPF(std::string filename, std::istream &in)
log_error("failed to open LPF file\n");
std::string line;
std::string linebuf;
int lineno = 0;
while (std::getline(in, line)) {
++lineno;
size_t cstart = line.find('#');
if (cstart != std::string::npos)
line = line.substr(0, cstart);
@ -61,51 +64,62 @@ bool Arch::applyLPF(std::string filename, std::istream &in)
if (words.size() >= 0) {
std::string verb = words.at(0);
if (verb == "BLOCK" || verb == "SYSCONFIG") {
log_warning(" ignoring unsupported LPF command '%s'\n", command.c_str());
if (words.size() != 2 || (words.at(1) != "ASYNCPATHS" && words.at(1) != "RESETPATHS"))
log_warning(" ignoring unsupported LPF command '%s' (on line %d)\n", command.c_str(),
lineno);
} else if (verb == "FREQUENCY") {
if (words.size() < 2)
log_error("expected object type after FREQUENCY (on line %d)\n", lineno);
std::string etype = words.at(1);
if (etype == "PORT" || etype == "NET") {
std::string target = words.at(2);
if (target.at(0) == '\"') {
NPNR_ASSERT(target.back() == '\"');
target = target.substr(1, target.length() - 2);
}
if (words.size() < 4)
log_error("expected frequency value and unit after 'FREQUENCY %s' (on line %d)\n",
etype.c_str(), lineno);
std::string target = strip_quotes(words.at(2));
float freq = std::stof(words.at(3));
std::string unit = words.at(4);
if (unit == "MHz")
boost::algorithm::to_upper(unit);
if (unit == "MHZ")
;
else if (unit == "kHz")
else if (unit == "KHZ")
freq /= 1.0e3;
else if (unit == "Hz")
else if (unit == "HZ")
freq /= 1.0e6;
else
log_error("unsupported frequency unit '%s'\n", unit.c_str());
log_error("unsupported frequency unit '%s' (on line %d)\n", unit.c_str(), lineno);
addClock(id(target), freq);
} else {
log_warning(" ignoring unsupported LPF command '%s %s'\n", command.c_str(),
etype.c_str());
log_warning(" ignoring unsupported LPF command '%s %s' (on line %d)\n", command.c_str(),
etype.c_str(), lineno);
}
} else if (verb == "LOCATE") {
NPNR_ASSERT(words.at(1) == "COMP");
if (words.size() < 5)
log_error("expected syntax 'LOCATE COMP <port name> SITE <pin>' (on line %d)\n", lineno);
if (words.at(1) != "COMP")
log_error("expected 'COMP' after 'LOCATE' (on line %d)\n", lineno);
std::string cell = strip_quotes(words.at(2));
NPNR_ASSERT(words.at(3) == "SITE");
if (words.at(3) != "SITE")
log_error("expected 'SITE' after 'LOCATE COMP %s' (on line %d)\n", cell.c_str(), lineno);
auto fnd_cell = cells.find(id(cell));
if (fnd_cell == cells.end()) {
log_warning("unmatched LPF 'LOCATE COMP' '%s'\n", cell.c_str());
} else {
if (fnd_cell != cells.end()) {
fnd_cell->second->attrs[id("LOC")] = strip_quotes(words.at(4));
}
} else if (verb == "IOBUF") {
NPNR_ASSERT(words.at(1) == "PORT");
if (words.size() < 3)
log_error("expected syntax 'IOBUF PORT <port name> <attr>=<value>...' (on line %d)\n",
lineno);
if (words.at(1) != "PORT")
log_error("expected 'PORT' after 'IOBUF' (on line %d)\n", lineno);
std::string cell = strip_quotes(words.at(2));
auto fnd_cell = cells.find(id(cell));
if (fnd_cell == cells.end()) {
log_warning("unmatched LPF 'IOBUF PORT' '%s'\n", cell.c_str());
} else {
if (fnd_cell != cells.end()) {
for (size_t i = 3; i < words.size(); i++) {
std::string setting = words.at(i);
size_t eqpos = setting.find('=');
NPNR_ASSERT(eqpos != std::string::npos);
if (eqpos == std::string::npos)
log_error(
"expected syntax 'IOBUF PORT <port name> <attr>=<value>...' (on line %d)\n",
lineno);
std::string key = setting.substr(0, eqpos), value = setting.substr(eqpos + 1);
fnd_cell->second->attrs[id(key)] = value;
}

23
ecp5/main.cc
View File

@ -25,6 +25,7 @@
#include "design_utils.h"
#include "log.h"
#include "timing.h"
#include "util.h"
USING_NEXTPNR_NAMESPACE
@ -68,6 +69,7 @@ po::options_description ECP5CommandHandler::getArchOptions()
specific.add_options()("textcfg", po::value<std::string>(), "textual configuration in Trellis format to write");
specific.add_options()("lpf", po::value<std::vector<std::string>>(), "LPF pin constraint file(s)");
specific.add_options()("lpf-allow-unconstrained", "don't require LPF file(s) to constrain all IO");
return specific;
}
@ -157,7 +159,26 @@ void ECP5CommandHandler::customAfterLoad(Context *ctx)
std::vector<std::string> files = vm["lpf"].as<std::vector<std::string>>();
for (const auto &filename : files) {
std::ifstream in(filename);
ctx->applyLPF(filename, in);
if (!in)
log_error("failed to open LPF file '%s'\n", filename.c_str());
if (!ctx->applyLPF(filename, in))
log_error("failed to parse LPF file '%s'\n", filename.c_str());
}
for (auto cell : sorted(ctx->cells)) {
CellInfo *ci = cell.second;
if (ci->type == ctx->id("$nextpnr_ibuf") || ci->type == ctx->id("$nextpnr_obuf") ||
ci->type == ctx->id("$nextpnr_iobuf")) {
if (!ci->attrs.count(ctx->id("LOC"))) {
if (vm.count("lpf-allow-unconstrained"))
log_warning("IO '%s' is unconstrained in LPF and will be automatically placed\n",
cell.first.c_str(ctx));
else
log_error("IO '%s' is unconstrained in LPF (override this error with "
"--lpf-allow-unconstrained)\n",
cell.first.c_str(ctx));
}
}
}
}
}