1 package edu.berkeley.fleet.fpga;
2 import edu.berkeley.fleet.fpga.*;
3 import edu.berkeley.fleet.api.*;
4 import edu.berkeley.fleet.two.*;
5 import edu.berkeley.fleet.*;
6 import java.lang.reflect.*;
7 import edu.berkeley.sbp.chr.*;
8 import edu.berkeley.sbp.misc.*;
9 import edu.berkeley.sbp.meta.*;
10 import edu.berkeley.sbp.util.*;
13 import edu.berkeley.fleet.two.*;
14 import static edu.berkeley.fleet.two.FleetTwoFleet.*;
15 import static edu.berkeley.fleet.fpga.verilog.Verilog.*;
16 import edu.berkeley.fleet.two.PercolatedPort;
19 public abstract class Fpga extends FleetTwoFleet {
24 public LinkedHashMap<String,FpgaShip> ships = new LinkedHashMap<String,FpgaShip>();
25 public Iterator<Ship> iterator() { return (Iterator<Ship>)(Object)ships.values().iterator(); }
27 public Ship getShip(String type, int ordinal) {
29 if (s.getType().equals(type))
35 public static void main(String[] s) throws Exception {
36 ((Fpga)Fleet.getDefaultImpl()).top.dump(s[0]);
39 pw = new PrintWriter(new OutputStreamWriter(new FileOutputStream(s[0]+"/timescale.v")));
40 pw.println("`timescale 1ns / 10ps");
43 pw = new PrintWriter(new OutputStreamWriter(new FileOutputStream(s[0]+"/vram.v")));
44 pw.println("`define BRAM_ADDR_WIDTH 19");
45 pw.println("`define BRAM_DATA_WIDTH 3");
46 pw.println("`define BRAM_SIZE (640*480)");
47 pw.println("`define BRAM_NAME vram");
48 pw.println("`include \"bram.inc\"");
52 public Module getVerilogModule() { return top; }
54 public FleetProcess run(Instruction[] instructions) {
56 return new Client(this, "none", instructions);
57 } catch (Exception e) { throw new RuntimeException(e); }
60 protected BitVector getDestAddr(Path path) {
61 return ((FpgaPath)path).toBitVector();
64 // Setup //////////////////////////////////////////////////////////////////////////////
66 Ship createShip(String type) throws IOException {
67 ShipDescription sd = new ShipDescription(this, type, new BufferedReader(new InputStreamReader(new FileInputStream("ships/"+type+".ship"))));
69 for(Ship ship : ships.values()) if (ship.getType().equals(type)) count++;
70 String name = type+count;
71 FpgaShip ship = new FpgaShip(this, sd);
72 ships.put(name, ship);
76 protected Fpga() throws IOException {
77 this.top = new Module("main");
78 this.debugShip = createShip("Debug");
81 protected void init() throws IOException {
83 new Module.InstantiatedModule(top, new FifoModule(8, WIDTH_WORD));
85 ArrayList dests = new ArrayList<FabricElement>();
86 ArrayList sources = new ArrayList<FabricElement>();
87 for(FpgaShip ship : (Iterable<FpgaShip>)(Object)this) {
88 for(Dock port : ship) {
89 if (port.isInputDock()) {
90 sources.add(((FpgaDock)port));
91 dests.add(port.getInstructionDestination());
92 dests.add(port.getDataDestination());
94 sources.add(((FpgaDock)port));
95 dests.add(port.getInstructionDestination());
96 dests.add(port.getDataDestination());
99 for(Module.SourcePort sp0 : ship.docklessPorts.values()) {
100 final Module.SourcePort sp = sp0;
101 sources.add(new FabricElement.AbstractFabricElement() {
102 private FabricElement upstream;
103 public int getPathLength(FpgaDestination dest) { return upstream.getPathLength(dest); }
104 public FpgaPath getPath(FpgaDestination dest, BitVector signal) { return upstream.getPath(dest, signal); }
105 public void addOutput(FabricElement out, Module.Port outPort) {
107 sp.connect((Module.SinkPort)outPort);
112 FabricElement top_horn = mkNode((FabricElement[])dests.toArray(new FabricElement[0]), true);
113 mkNode((FabricElement[])sources.toArray(new FabricElement[0]), false)
114 .addOutput(top_horn, top_horn.getInputPort());
117 public FabricElement mkNode(FabricElement[] ports, boolean is_horn) { return mkNode(ports, is_horn, 0, ports.length); }
118 public FabricElement mkNode(FabricElement[] ports, boolean is_horn, int start, int end) {
120 case 0: throw new RuntimeException("this should never happen");
121 case 1: return ports[start];
123 FabricElement leftPort = mkNode(ports, is_horn, start, (end+start)/2);
124 FabricElement rightPort = mkNode(ports, is_horn, (end+start)/2, end);
126 ? new HornModule.HornInstance(this, top, leftPort, rightPort)
127 : new FunnelModule.FunnelInstance(this, top, leftPort, rightPort);
133 // Expand //////////////////////////////////////////////////////////////////////////////
135 public void expand(ShipDescription sd) {
137 if (sd.getSection("fpga")==null) return;
138 if (getShip(sd.getName(),0)==null) return; // no ships of this type
139 String filename = sd.getName().toLowerCase();
141 if (sd.getSection("ucf") != null) {
142 File outf = new File("build/fpga/"+filename+".ucf");
143 FileOutputStream out = new FileOutputStream(outf);
144 PrintWriter pw = new PrintWriter(out);
145 pw.println(sd.getSection("ucf"));
150 File outf = new File("build/fpga/"+filename+".v");
151 new File(outf.getParent()).mkdirs();
152 System.err.println("writing to " + outf);
153 FileOutputStream out = new FileOutputStream(outf);
154 PrintWriter pw = new PrintWriter(out);
156 pw.println("`define WORDWIDTH "+WIDTH_WORD);
157 pw.println("`define CODEBAG_SIZE_BITS "+CBD_SIZE.valmaskwidth);
160 for(DockDescription dd : sd.ports()) {
161 String name = dd.getName();
162 pw.println("`define "+name+"_full ("+name+"_r && !"+name+"_a)");
163 pw.println("`define "+name+"_empty (!"+name+"_r && !"+name+"_a)");
164 if (dd.isInputDock()) {
165 // gets stuck on colliding-tokens
166 //pw.println("`define drain_"+name+" if ("+name+"_r && !"+name+"_a) "+name+"_a <= 1;");
168 // gets stuck on colliding-tokens
169 //pw.println("`define drain_"+name+" if ("+name+"_r) "+name+"_a <= 1;");
172 //pw.println("`define drain_"+name+" if (!"+name+"_a) "+name+"_a <= 1;");
173 pw.println("`define drain_"+name+" "+name+"_a <= 1;");
175 pw.println("`define fill_"+name+" "+name+"_r <= 1;");
179 pw.print("`define reset ");
180 for(DockDescription bb : sd.ports()) {
181 String bb_name = bb.getName();
182 if (bb.isInputDock()) pw.print(bb_name+"_a <= 1; ");
183 else pw.print(bb_name+"_r <= 0; ");
187 pw.print("`define cleanup ");
190 for(DockDescription dd : sd.ports())
191 if (!dd.isInputDock())
192 pw.print("if ( "+dd.getName()+"_r && "+dd.getName()+"_a) "+dd.getName()+"_r <= 0; ");
194 // input docks: if all inputs are flushing, drain them all
196 for(DockDescription bb : sd.ports())
197 if (bb.isInputDock())
198 pw.print(" && "+bb.getName()+"_f");
199 pw.print(") begin ");
200 for(DockDescription bb : sd.ports())
201 if (bb.isInputDock())
202 pw.print(bb.getName()+"_a <= 1; ");
204 // input docks: if no inputs are flushing, do normal stuff
205 pw.print("end else if (1");
206 for(DockDescription bb : sd.ports())
207 if (bb.isInputDock())
208 pw.print(" && !"+bb.getName()+"_f");
209 pw.print(") begin ");
211 for(DockDescription bb : sd.ports())
212 if (bb.isInputDock())
213 pw.print("if (!"+bb.getName()+"_r_ && "+bb.getName()+"_a) "+bb.getName()+"_a <= 0; ");
215 // input docks: if some-but-not-all inputs are flushing, drain all non-flushing docks
216 pw.print("end else begin ");
218 for(DockDescription bb : sd.ports())
219 if (bb.isInputDock()) {
220 pw.print("if (!"+bb.getName()+"_r && "+bb.getName()+"_a) "+bb.getName()+"_a <= 0; ");
221 pw.print("if ("+bb.getName()+"_r && !"+bb.getName()+"_a) "+bb.getName()+"_a <= 1; ");
228 pw.println("module " + filename + "( clk, rst ");
229 for(DockDescription bb : sd.ports()) {
230 String bb_name = bb.getName();
232 if (bb.isInputDock()) {
233 pw.print(", " + bb_name+"_r_");
234 pw.print(", " + bb_name+"_a_");
235 pw.print(", " + bb_name+"_d");
237 pw.print(", " + bb_name+"_r_");
238 pw.print(", " + bb_name+"_a");
239 pw.print(", " + bb_name+"_d_");
243 for(PercolatedPort pp : sd.percolatedPorts) {
249 pw.println(" input clk;");
250 pw.println(" input rst;");
251 for(PercolatedPort pp : sd.percolatedPorts) {
253 case UP: pw.print("output"); break;
254 case DOWN: pw.print("input"); break;
255 case INOUT: pw.print("inout"); break;
259 pw.print("["+(pp.width-1)+":0]");
265 for(DockDescription bb : sd.ports()) {
266 String bb_name = bb.getName();
267 int width = bb.isDockless() ? WIDTH_PACKET : WIDTH_WORD;
268 if (bb.isInputDock()) {
269 pw.println(" input ["+width+":0] "+bb_name+"_d;");
270 pw.println(" input "+bb_name+"_r_;");
271 pw.println(" wire "+bb_name+"_r;");
272 pw.println(" assign "+bb_name+"_r = "+bb_name+"_r_ & ~"+bb_name+"_d["+width+"];");
273 pw.println(" output "+bb_name+"_a_;");
274 pw.println(" reg "+bb_name+"_a;");
275 pw.println(" initial "+bb_name+"_a = 0;");
276 pw.println(" wire "+bb_name+"_f;");
277 pw.println(" assign "+bb_name+"_f = "+bb_name+"_r_ & "+bb_name+"_d["+width+"] && ~"+bb_name+"_a;");
278 pw.println(" assign "+bb_name+"_a_ = "+bb_name+"_a;");
280 pw.println(" output ["+width+":0] "+bb_name+"_d_;");
281 pw.println(" input "+bb_name+"_a;");
282 pw.println(" output "+bb_name+"_r_;");
283 pw.println(" reg "+bb_name+"_r;");
284 pw.println(" initial "+bb_name+"_r = 0;");
285 pw.println(" assign "+bb_name+"_r_ = "+bb_name+"_r;");
290 if (filename.equals("fifo")) {
291 pw.println(" wire in_a__;");
292 pw.println(" wire out_r__;");
293 pw.println(" fifo8x37 fifo8x37(clk, rst,");
294 pw.println(" in_r, in_a__, in_d,");
295 pw.println(" out_r__, out_a, out_d_);");
296 pw.println(" always @(posedge clk) begin");
297 pw.println(" if (rst) begin");
298 pw.println(" `reset");
299 pw.println(" end else begin");
300 pw.println(" `cleanup");
301 pw.println(" out_r <= out_r__;");
302 pw.println(" if (in_a__) in_a <= 1;");
306 pw.println(sd.getSection("fpga"));
309 pw.println("endmodule");
313 } catch (Exception e) { throw new RuntimeException(e); }