--- /dev/null
+package edu.berkeley.slipway.mpar;
+import com.atmel.fpslic.*;
+import byucc.edif.tools.merge.*;
+import byucc.edif.*;
+import java.io.*;
+import java.util.*;
+import edu.berkeley.slipway.*;
+import com.atmel.fpslic.*;
+import static com.atmel.fpslic.FpslicConstants.*;
+import static edu.berkeley.slipway.mpar.MPARDemo.*;
+
+public class FlatNetlist {
+
+ private HashMap<String,Integer> ids = new HashMap<String,Integer>();
+
+ public HashSet<Node> nodes = new HashSet<Node>();
+ public HashSet<Net> nets = new HashSet<Net>();
+
+ /** a node is some primitive element; a potential configuration of a CLB */
+ public class Node {
+ public PhysicalDevice.PhysicalCell physicalCell = null;
+ private final String type;
+ private final int id;
+
+ public int x = -1;
+ public int y = -1;
+
+ private HashMap<String,Port> ports = new HashMap<String,Port>();
+
+ public Node(String type) {
+ nodes.add(this);
+ this.type = type.toLowerCase();
+ Integer num = ids.get(type);
+ this.id = num == null ? 0 : num.intValue();
+ ids.put(type, this.id+1);
+ }
+ public String getType() { return type; }
+ public String toString() {
+ if (x==-1 || y==-1)
+ return type + "["+id+"]";
+ return type + "@("+x+","+y+")";
+ }
+ public Port getPort(String name, boolean driver) {
+ Port p = ports.get(name);
+ if (p==null) ports.put(name, p = new Port(name, driver));
+ return p;
+ }
+
+ public Fpslic.Cell getPlacement(Fpslic fpslic) { return fpslic.cell(x, y); }
+ public void place(Fpslic fpslic) {
+ Fpslic.Cell cell = fpslic.cell(x,y);
+ cell.c(XLUT);
+ cell.b(false);
+ cell.f(false);
+ cell.xi(NW);
+ cell.yi(EAST);
+ if (type.equals("and2")) cell.xlut(LUT_SELF & LUT_OTHER);
+ else if (type.equals("or2")) cell.xlut(LUT_SELF | LUT_OTHER);
+ else if (type.equals("xor2")) cell.xlut(LUT_SELF ^ LUT_OTHER);
+ else if (type.equals("buf")) cell.xlut(LUT_SELF);
+ else if (type.equals("inv")) cell.xlut(~LUT_SELF);
+ else if (type.equals("cell0")) return;
+ }
+
+ private int portIndex = 0;
+
+ /** a port is an input or output to a Node */
+ public class Port {
+ private final String name;
+ private final boolean driver;
+ Net net;
+ public final int index;
+ public Port(String name, boolean driver) {
+ this.name = name;
+ this.driver = driver;
+ this.index = driver ? 0 : portIndex++;
+ }
+ public String toString() { return Node.this + "." + name; }
+ public Node getNode() { return Node.this; }
+ public void connect(Port p) {
+ if (net != null) { net.add(p);
+ } else if (p.net != null) { p.net.add(this);
+ } else {
+ new Net().add(this);
+ this.net.add(p);
+ }
+ }
+ public void route(Fpslic fpslic, Port[] dests, PhysicalDevice pd, FlatNetlist.Net owner) {
+ PhysicalDevice.PhysicalNet[] destsp = new PhysicalDevice.PhysicalNet[dests.length];
+ for(int i=0; i<dests.length; i++) {
+ Port dest = dests[i];
+ switch(dest.index) {
+ case 0: destsp[i] = dest.getNode().physicalCell.getNet("xi"); break;
+ case 1: destsp[i] = dest.getNode().physicalCell.getNet("yi"); break;
+ default: throw new Error();
+ }
+ }
+ //System.out.println(physicalCell.getNet("out"));
+ //System.out.println(destsp[0]);
+ pd.route(physicalCell.getNet("out"), destsp, owner);
+
+ /*
+ Fpslic.Cell driverCell = fpslic.cell(getNode().x,getNode().y);
+ Fpslic.Cell destCell = fpslic.cell(dest.getNode().x,dest.getNode().y);
+ boolean[] hblocked = new boolean[5];
+ boolean[] vblocked = new boolean[5];
+ hblocked[3] = true;
+ vblocked[3] = true;
+ int minx = Math.min(getNode().x, dest.getNode().x);
+ int miny = Math.min(getNode().y, dest.getNode().y);
+ int maxx = Math.max(getNode().x, dest.getNode().x);
+ int maxy = Math.max(getNode().y, dest.getNode().y);
+ for(int cx = 0; cx <= 3; cx++) {
+ Fpslic.Cell c = fpslic.cell(cx, getNode().y);
+ for(int i=0; i<5; i++)
+ hblocked[i] |= (c.hx(i) && !c.equals(driverCell));
+ }
+ for(int cy = 0; cy <= 3; cy++) {
+ Fpslic.Cell c = fpslic.cell(dest.getNode().x, cy);
+ for(int i=0; i<5; i++)
+ vblocked[i] |= (c.vx(i) && !c.equals(driverCell));
+ }
+ int free = 0;
+ for(; free < 5; free++) if (!hblocked[free]) break;
+ for(; free < 5; free++) if (!vblocked[free]) break;
+ if (free >= 5) throw new RuntimeException("unroutable!");
+ Fpslic.Cell turnCell = fpslic.cell(dest.getNode().x, getNode().y);
+ driverCell.out(free, true);
+ driverCell.h(free, true);
+ turnCell.h(free, true);
+ turnCell.v(free, true);
+ switch(dest.index) {
+ case 0: destCell.xi(L0 + free); break;
+ case 1: destCell.yi(L0 + free); break;
+ case 2: destCell.wi(L0 + free); break;
+ case 3: destCell.zi(L0 + free); break;
+ default: throw new RuntimeException("error");
+ }
+ destCell.v(free, true);
+ System.out.println("route " + this + " -> " + dest + " on planes " + free);
+ */
+ }
+ }
+ }
+
+ /** a Net is a collection of ports which are wired together */
+ public class Net implements Iterable<Node.Port> {
+ private Node.Port driver = null;
+ private HashSet<Node.Port> ports = new HashSet<Node.Port>();
+ public Net() { nets.add(this); }
+ public Iterator<Node.Port> iterator() { return ports.iterator(); }
+ public int getSize() { return ports.size(); }
+ public HashSet<PhysicalDevice.PhysicalPip> pips = new HashSet<PhysicalDevice.PhysicalPip>();
+ public HashSet<PhysicalDevice.PhysicalNet> pns = new HashSet<PhysicalDevice.PhysicalNet>();
+ public boolean routed = false;
+ public void unroute() {
+ for(PhysicalDevice.PhysicalPip pip : pips)
+ pip.set(false);
+ for(PhysicalDevice.PhysicalNet net : pns) {
+ net.owners.remove(this);
+ net.load--;
+ }
+ pips.clear();
+ pns.clear();
+ routed = false;
+ }
+ public void route(Fpslic fpslic, PhysicalDevice pd) {
+ if (driver == null) return;
+ if (routed) return;
+ //System.out.println();
+ //System.out.println("routing " + this);
+ Node.Port[] dests = new Node.Port[ports.size() - (ports.contains(driver) ? 1 : 0)];
+ int i = 0;
+ for(Node.Port p : ports)
+ if (p != driver)
+ dests[i++] = p;
+ driver.route(fpslic, dests, pd, this);
+ routed = true;
+ }
+ public void add(Node.Port p) {
+ if (p.driver) {
+ if (driver != null && driver != p)
+ throw new RuntimeException("two drivers on a port!\n "+driver+"\n "+p);
+ driver = p;
+ }
+ if (p.net==this || ports.contains(p)) return;
+ ports.add(p);
+ add(p.net);
+ p.net = this;
+ }
+ public void add(Net n) {
+ if (n==this || n==null) return;
+ for(Node.Port p : n) add(p);
+ nets.remove(n);
+ }
+ public String toString() {
+ StringBuffer ret = new StringBuffer();
+ ret.append(driver==null ? "()" : driver.toString());
+ ret.append(" -> ");
+ for(Node.Port p : this)
+ if (p!=driver)
+ ret.append(p+" ");
+ return ret.toString();
+ }
+ }
+
+
+ public HashMap<EdifCellInstance,FlatNetlist.Node> cache =
+ new HashMap<EdifCellInstance,FlatNetlist.Node>();
+ public HashMap<String,FlatNetlist.Node> top =
+ new HashMap<String,FlatNetlist.Node>();
+
+ public FlatNetlist.Node createNode(EdifCellInstance eci, String portName) {
+ FlatNetlist.Node n = eci==null ? top.get(portName) : cache.get(eci);
+ if (n != null) return n;
+ if (eci==null) {
+ n = new FlatNetlist.Node("top_"+portName);
+ top.put(portName, n);
+ return n;
+ } else {
+ n = new FlatNetlist.Node(eci.getType());
+ cache.put(eci,n);
+ }
+ for(EdifPortRef epr : eci.getAllEPRs()) {
+ EdifPort ep = epr.getPort();
+ EdifNet en = epr.getNet();
+ String name = ep.getOldName();
+ boolean driver = ep.getDirection()==ep.OUT;
+ if (eci==null) driver = !driver;
+ if (eci==null) name = driver ? "out" : "xi";
+ FlatNetlist.Node.Port p = n.getPort(name, driver);
+ for(EdifPortRef epr2 : en.getConnectedPortRefs()) {
+ EdifCellInstance eci2 = epr2.getCellInstance();
+ EdifPort ep2 = epr2.getPort();
+ Node n2 = createNode(eci2, ep2.getOldName());
+ driver = ep2.getDirection()==ep.OUT;
+ name = ep2.getOldName();
+ if (eci2==null) driver = !driver;
+ if (eci2==null) name = driver ? "out" : "xi";
+ FlatNetlist.Node.Port p2 = n2.getPort(name, driver);
+ p.connect(p2);
+ }
+ }
+ return n;
+ }
+}
projects / slipway.git / blobdiff