76 lines
2.6 KiB
C++
76 lines
2.6 KiB
C++
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/********************************************************************
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* This file includes the top-level function of this library
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* which reads an XML of pin constraints to the associated
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* data structures
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*******************************************************************/
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#include <string>
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/* Headers from vtr util library */
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#include "vtr_assert.h"
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#include "vtr_time.h"
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#include "vtr_log.h"
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/* Headers from libopenfpga util library */
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#include "openfpga_port_parser.h"
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#include "rapidcsv.h"
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#include "read_csv_io_pin_table.h"
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/* Begin namespace openfpga */
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namespace openfpga {
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/********************************************************************
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* Parse XML codes about <pin_constraints> to an object of PinConstraints
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*******************************************************************/
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IoPinTable read_csv_io_pin_table(const char* fname) {
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vtr::ScopedStartFinishTimer timer("Read I/O Pin Table");
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IoPinTable io_pin_table;
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rapidcsv::Document doc(fname, rapidcsv::LabelParams(-1, -1),
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rapidcsv::SeparatorParams(','));
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/* TODO: Move this to constants */
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std::map<std::string, e_side> side_str_map { {"TOP", TOP}, {"RIGHT", RIGHT}, {"LEFT", LEFT}, {"BOTTOM", BOTTOM} };
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int num_rows = doc.GetRowCount();
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io_pin_table.reserve_pins(num_rows);
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for (int irow = 1; irow < num_rows; irow++) {
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std::vector<std::string> row_vec = doc.GetRow<std::string>(irow);
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IoPinTableId pin_id = io_pin_table.create_pin();
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/* Fill pin-level information */
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PortParser internal_pin_parser(row_vec.at(4));
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io_pin_table.set_internal_pin(pin_id, internal_pin_parser.port());
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PortParser external_pin_parser(row_vec.at(5));
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io_pin_table.set_external_pin(pin_id, external_pin_parser.port());
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std::string pin_side_str = row_vec.at(0);
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if (side_str_map.end() == side_str_map.find(pin_side_str)) {
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VTR_LOG("Invalid side defintion (='%s')! Expect [TOP|RIGHT|LEFT|BOTTOM]\n", pin_side_str.c_str());
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exit(1);
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} else {
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io_pin_table.set_pin_side(pin_id, side_str_map[pin_side_str]);
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}
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/*This is not general purpose: we should have an explicit attribute in the csv file to decalare direction */
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if (internal_pin_parser.port().get_name().find("A2F") != std::string::npos) {
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io_pin_table.set_pin_direction(pin_id, IoPinTable::INPUT);
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} else if (internal_pin_parser.port().get_name().find("F2A") != std::string::npos) {
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io_pin_table.set_pin_direction(pin_id, IoPinTable::OUTPUT);
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} else {
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VTR_LOG("Invalid direction defintion! Expect [A2F|F2A] in the pin name\n");
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exit(1);
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}
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}
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return io_pin_table;
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}
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} /* End namespace openfpga*/
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