60 lines
2.4 KiB
C++
60 lines
2.4 KiB
C++
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/***************************************************************************************
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* This file includes most utilized functions for LbRRGraph object
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***************************************************************************************/
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/* Headers from vtrutil library */
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#include "vtr_log.h"
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#include "vtr_assert.h"
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#include "lb_rr_graph_utils.h"
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/* begin namespace openfpga */
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namespace openfpga {
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/***************************************************************************************
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* Generate a string to describe a node in a logical tile rr_graph
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* in the context of logical tile
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***************************************************************************************/
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std::string describe_lb_rr_node(const LbRRGraph& lb_rr_graph,
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const LbRRNodeId& inode) {
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std::string description;
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const t_pb_graph_pin* pb_graph_pin = lb_rr_graph.node_pb_graph_pin(inode);
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if (pb_graph_pin) {
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description += "'" + pb_graph_pin->to_string(false) + "'";
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} else if (inode == lb_rr_graph.ext_source_node()) {
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VTR_ASSERT(LB_SOURCE == lb_rr_graph.node_type(inode));
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description = "cluster-external source (LB_SOURCE)";
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} else if (inode == lb_rr_graph.ext_sink_index()) {
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VTR_ASSERT(LB_SINK == lb_rr_graph.node_type(inode));
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description = "cluster-external sink (LB_SINK)";
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} else if (LB_SINK == lb_rr_graph.node_type(inode)) {
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description = "cluster-internal sink (LB_SINK accessible via architecture pins: ";
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//To account for equivalent pins multiple pins may route to a single sink.
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//As a result we need to fin all the nodes which connect to this sink in order
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//to give user-friendly pin names
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std::vector<std::string> pin_descriptions;
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for (const LbRREdgeId edge : lb_rr_graph.node_in_edges(inode)) {
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const LbRRNodeId pin_rr_idx = lb_rr_graph.edge_src_node(edge);
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const t_pb_graph_pin* pin_pb_gpin = lb_rr_graph.node_pb_graph_pin(pin_rr_idx);
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pin_descriptions.push_back(pin_pb_gpin->to_string());
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}
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description += vtr::join(pin_descriptions, ", ");
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description += ")";
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} else if (LB_SOURCE == lb_rr_graph.node_type(inode)) {
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description = "cluster-internal source (LB_SOURCE)";
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} else if (LB_INTERMEDIATE == lb_rr_graph.node_type(inode)) {
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description = "cluster-internal intermediate?";
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} else {
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description = "<unknown lb_type_rr_node>";
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}
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return description;
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}
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} /* end namespace openfpga */
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