96 lines
3.5 KiB
C++
96 lines
3.5 KiB
C++
#ifndef RR_CHAN_H
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#define RR_CHAN_H
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/********************************************************************
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* Include header files required by the data structure definition
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*******************************************************************/
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#include <vector>
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/* Headers from vtrutil library */
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#include "vtr_geometry.h"
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/* Headers from openfpgautil library */
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#include "openfpga_port.h"
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/* Headers from vpr library */
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#include "rr_graph_obj.h"
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/* Begin namespace openfpga */
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namespace openfpga {
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/********************************************************************
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* RRChan object aim to describe a routing channel in a routing resource graph
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* - What are the nodes in the RRGraph object, for each routing track
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* - What are routing segments used by each node in the channel
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* - What are the directions of each routing channel
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* being either X-direction or Y-direction
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*
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* Note :
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* - This is a collection of rr_nodes from the RRGraph Object
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* It does not rebuild or contruct any connects between rr_nodes
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* It is just an annotation on an existing RRGraph
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* ------------- ------
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* | | | |
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* | | | Y |
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* | CLB | | Chan |
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* | | | |
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* | | | |
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* ------------- ------
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* -------------
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* | X |
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* | Channel |
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* -------------
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*******************************************************************/
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class RRChan {
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public: /* Constructors */
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RRChan(const RRChan&); /* Copy Constructor */
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RRChan();
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public: /* Accessors */
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t_rr_type get_type() const;
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size_t get_chan_width() const; /* get the number of tracks in this channel */
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int get_node_track_id(const RRNodeId& node) const; /* get the track_id of a node */
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RRNodeId get_node(const size_t& track_num) const; /* get the rr_node with the track_id */
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RRSegmentId get_node_segment(const RRNodeId& node) const;
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RRSegmentId get_node_segment(const size_t& track_num) const;
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bool is_mirror(const RRGraph& rr_graph, const RRChan& cand) const; /* evaluate if two RR_chan is mirror to each other */
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std::vector<RRSegmentId> get_segment_ids() const; /* Get a list of segments used in this routing channel */
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std::vector<size_t> get_node_ids_by_segment_ids(const RRSegmentId& seg_id) const; /* Get a list of segments used in this routing channel */
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public: /* Mutators */
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/* copy */
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void set(const RRChan&);
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/* modify the type of routing channel */
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void set_type(const t_rr_type& type);
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/* reseve a number of nodes to the array */
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void reserve_node(const size_t& node_size);
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/* add a node to the routing channel */
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void add_node(const RRGraph& rr_graph, const RRNodeId& node, const RRSegmentId& node_segment);
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/* clear the content */
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void clear();
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private: /* internal functions */
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/* For the type of a routing channel, only valid type is CHANX and CHANY */
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bool valid_type(const t_rr_type& type) const;
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/* Check each node, see if the node type is consistent with the type of routing channel */
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bool valid_node_type(const RRGraph& rr_graph, const RRNodeId& node) const;
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/* Validate if the track number in the range */
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bool valid_node_id(const size_t& node_id) const;
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private: /* Internal Data */
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t_rr_type type_; /* channel type: CHANX or CHANY */
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std::vector<RRNodeId> nodes_; /* rr nodes of each track in the channel */
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std::vector<RRSegmentId> node_segments_; /* segment of each track */
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};
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} /* End namespace openfpga*/
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#endif
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