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 static edu.berkeley.fleet.fpga.verilog.Verilog.PercolatedPort;
19 public 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 new Fpga(new Module("main")).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(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 public Fpga() throws Exception { this(new Module("main")); }
77 public Fpga(Module top) throws Exception {
79 debugShip = createShip("Debug");
82 //boolean small = false;
86 for(int i=0; i<1; i++) createShip("Memory");
87 for(int i=0; i<2; i++) createShip("Fifo");
88 for(int i=0; i<2; i++) createShip("Alu");
89 createShip("Counter");
90 createShip("CarrySaveAdder");
91 createShip("Rotator");
97 for(int i=0; i<3; i++) createShip("Memory");
98 for(int i=0; i<3; i++) createShip("Alu");
99 for(int i=0; i<2; i++) createShip("Fifo");
100 for(int i=0; i<14; i++) createShip("Counter");
102 // "really big" configuration: 138 docks
103 for(int i=0; i<4; i++) createShip("Alu");
104 //createShip("CarrySaveAdder");
105 //createShip("Rotator");
106 //createShip("Lut3");
108 //createShip("DDR2");
109 //createShip("Video");
113 new Module.InstantiatedModule(top, new FifoModule(8, WIDTH_WORD));
115 ArrayList dests = new ArrayList<FabricElement>();
116 ArrayList sources = new ArrayList<FabricElement>();
117 for(FpgaShip ship : (Iterable<FpgaShip>)(Object)this) {
118 for(Dock port : ship) {
119 if (port.isInputDock()) {
120 sources.add(((FpgaDock)port));
121 dests.add(port.getInstructionDestination());
122 dests.add(port.getDataDestination());
124 sources.add(((FpgaDock)port));
125 dests.add(port.getInstructionDestination());
126 dests.add(port.getDataDestination());
129 for(Module.SourcePort sp0 : ship.docklessPorts.values()) {
130 final Module.SourcePort sp = sp0;
131 sources.add(new FabricElement.AbstractFabricElement() {
132 private FabricElement upstream;
133 public FpgaPath getPath(FpgaDestination dest, BitVector signal) { return upstream.getPath(dest, signal); }
134 public void addOutput(FabricElement out, Module.Port outPort) {
136 sp.connect((Module.SinkPort)outPort);
141 FabricElement top_horn = mkNode((FabricElement[])dests.toArray(new FabricElement[0]), true);
142 mkNode((FabricElement[])sources.toArray(new FabricElement[0]), false)
143 .addOutput(top_horn, top_horn.getInputPort());
146 public FabricElement mkNode(FabricElement[] ports, boolean is_horn) { return mkNode(ports, is_horn, 0, ports.length); }
147 public FabricElement mkNode(FabricElement[] ports, boolean is_horn, int start, int end) {
149 case 0: throw new RuntimeException("this should never happen");
150 case 1: return ports[start];
152 FabricElement leftPort = mkNode(ports, is_horn, start, (end+start)/2);
153 FabricElement rightPort = mkNode(ports, is_horn, (end+start)/2, end);
155 ? new HornModule.HornInstance(this, top, leftPort, rightPort)
156 : new FunnelModule.FunnelInstance(this, top, leftPort, rightPort);
162 // Expand //////////////////////////////////////////////////////////////////////////////
164 public void expand(ShipDescription sd) {
166 if (sd.getSection("fpga")==null) return;
167 String filename = sd.getName().toLowerCase();
168 File outf = new File("build/fpga/"+filename+".v");
169 new File(outf.getParent()).mkdirs();
170 System.err.println("writing to " + outf);
171 FileOutputStream out = new FileOutputStream(outf);
172 PrintWriter pw = new PrintWriter(out);
174 pw.println("`define WORDWIDTH "+WIDTH_WORD);
175 pw.println("`define CODEBAG_SIZE_BITS "+CBD_SIZE.valmaskwidth);
178 for(DockDescription dd : sd.ports()) {
179 String name = dd.getName();
180 pw.println("`define "+name+"_full ("+name+"_r && !"+name+"_a)");
181 pw.println("`define "+name+"_empty (!"+name+"_r && !"+name+"_a)");
182 if (dd.isInputDock()) {
183 // gets stuck on colliding-tokens
184 //pw.println("`define drain_"+name+" if ("+name+"_r && !"+name+"_a) "+name+"_a <= 1;");
186 // gets stuck on colliding-tokens
187 //pw.println("`define drain_"+name+" if ("+name+"_r) "+name+"_a <= 1;");
190 //pw.println("`define drain_"+name+" if (!"+name+"_a) "+name+"_a <= 1;");
191 pw.println("`define drain_"+name+" "+name+"_a <= 1;");
193 pw.println("`define fill_"+name+" "+name+"_r <= 1;");
197 pw.print("`define reset ");
198 for(DockDescription bb : sd.ports()) {
199 String bb_name = bb.getName();
200 if (bb.isInputDock()) pw.print(bb_name+"_a <= 1; ");
201 else pw.print(bb_name+"_r <= 0; ");
205 pw.print("`define cleanup ");
208 for(DockDescription dd : sd.ports())
209 if (!dd.isInputDock())
210 pw.print("if ( "+dd.getName()+"_r && "+dd.getName()+"_a) "+dd.getName()+"_r <= 0; ");
212 // input docks: if all inputs are flushing, drain them all
214 for(DockDescription bb : sd.ports())
215 if (bb.isInputDock())
216 pw.print(" && "+bb.getName()+"_f");
217 pw.print(") begin ");
218 for(DockDescription bb : sd.ports())
219 if (bb.isInputDock())
220 pw.print(bb.getName()+"_a <= 1; ");
222 // input docks: if no inputs are flushing, do normal stuff
223 pw.print("end else if (1");
224 for(DockDescription bb : sd.ports())
225 if (bb.isInputDock())
226 pw.print(" && !"+bb.getName()+"_f");
227 pw.print(") begin ");
229 for(DockDescription bb : sd.ports())
230 if (bb.isInputDock())
231 pw.print("if (!"+bb.getName()+"_r_ && "+bb.getName()+"_a) "+bb.getName()+"_a <= 0; ");
233 // input docks: if some-but-not-all inputs are flushing, drain all non-flushing docks
234 pw.print("end else begin ");
236 for(DockDescription bb : sd.ports())
237 if (bb.isInputDock()) {
238 pw.print("if (!"+bb.getName()+"_r && "+bb.getName()+"_a) "+bb.getName()+"_a <= 0; ");
239 pw.print("if ("+bb.getName()+"_r && !"+bb.getName()+"_a) "+bb.getName()+"_a <= 1; ");
246 pw.println("module " + filename + "( clk, rst ");
247 for(DockDescription bb : sd.ports()) {
248 String bb_name = bb.getName();
250 if (bb.isInputDock()) {
251 pw.print(", " + bb_name+"_r_");
252 pw.print(", " + bb_name+"_a_");
253 pw.print(", " + bb_name+"_d");
255 pw.print(", " + bb_name+"_r_");
256 pw.print(", " + bb_name+"_a");
257 pw.print(", " + bb_name+"_d_");
261 for(PercolatedPort pp : sd.percolatedPorts) {
267 pw.println(" input clk;");
268 pw.println(" input rst;");
269 for(PercolatedPort pp : sd.percolatedPorts) {
271 case UP: pw.print("output"); break;
272 case DOWN: pw.print("input"); break;
273 case INOUT: pw.print("inout"); break;
277 pw.print("["+(pp.width-1)+":0]");
283 for(DockDescription bb : sd.ports()) {
284 String bb_name = bb.getName();
285 int width = bb.isDockless() ? WIDTH_PACKET : WIDTH_WORD;
286 if (bb.isInputDock()) {
287 pw.println(" input ["+width+":0] "+bb_name+"_d;");
288 pw.println(" input "+bb_name+"_r_;");
289 pw.println(" wire "+bb_name+"_r;");
290 pw.println(" assign "+bb_name+"_r = "+bb_name+"_r_ & ~"+bb_name+"_d["+width+"];");
291 pw.println(" output "+bb_name+"_a_;");
292 pw.println(" reg "+bb_name+"_a;");
293 pw.println(" initial "+bb_name+"_a = 0;");
294 pw.println(" wire "+bb_name+"_f;");
295 pw.println(" assign "+bb_name+"_f = "+bb_name+"_r_ & "+bb_name+"_d["+width+"] && ~"+bb_name+"_a;");
296 pw.println(" assign "+bb_name+"_a_ = "+bb_name+"_a;");
298 pw.println(" output ["+width+":0] "+bb_name+"_d_;");
299 pw.println(" input "+bb_name+"_a;");
300 pw.println(" output "+bb_name+"_r_;");
301 pw.println(" reg "+bb_name+"_r;");
302 pw.println(" initial "+bb_name+"_r = 0;");
303 pw.println(" assign "+bb_name+"_r_ = "+bb_name+"_r;");
308 if (filename.equals("fifo")) {
309 pw.println(" wire in_a__;");
310 pw.println(" wire out_r__;");
311 pw.println(" fifo8x37 fifo8x37(clk, rst,");
312 pw.println(" in_r, in_a__, in_d,");
313 pw.println(" out_r__, out_a, out_d_);");
314 pw.println(" always @(posedge clk) begin");
315 pw.println(" if (rst) begin");
316 pw.println(" `reset");
317 pw.println(" end else begin");
318 pw.println(" `cleanup");
319 pw.println(" out_r <= out_r__;");
320 pw.println(" if (in_a__) in_a <= 1;");
324 pw.println(sd.getSection("fpga"));
327 pw.println("endmodule");
331 } catch (Exception e) { throw new RuntimeException(e); }