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annotate core/scemi/SceMiLayer.bsv @ 58:52f9a257c2ba pygar svn.59

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[svn r59] LUTRAMing
author punk
date Mon, 10 May 2010 13:47:12 -0400
parents 91a1f76ddd62
children
rev   line source
punk@1 1
punk@1 2 import ClientServer::*;
punk@1 3 import FIFO::*;
punk@1 4 import GetPut::*;
punk@1 5 import DefaultValue::*;
punk@1 6 import SceMi::*;
punk@1 7 import Clocks::*;
punk@1 8
punk@1 9 import Core::*;
punk@1 10 import ProcTypes::*;
punk@1 11 import Processor::*;
punk@1 12 import DataCacheBlocking::*;
punk@1 13 import InstCacheBlocking::*;
punk@1 14
punk@1 15 interface DutWrapper;
punk@1 16 interface Core core;
punk@1 17
punk@1 18 // We use a Bit#(1) instead of void because Bluespec Sce-Mi doesn't appear
punk@1 19 // to support sending void over the PCIe link yet.
punk@1 20 interface Put#(Bit#(1)) doreset;
punk@1 21 endinterface
punk@1 22
punk@1 23 (* synthesize *)
punk@1 24 module [Module] mkDutWrapper (DutWrapper);
punk@1 25
punk@1 26 Clock clk <- exposeCurrentClock;
punk@1 27 MakeResetIfc myrst <- mkReset(2000, True, clk);
punk@1 28
punk@1 29 Core coreifc <- mkCore(reset_by myrst.new_rst);
punk@1 30
punk@1 31 // For tracing
punk@1 32 Reg#(int) cycle <- mkReg(0);
punk@1 33 rule printCycles;
punk@1 34 cycle <= cycle + 1;
punk@1 35 $fdisplay(stderr, " => Cycle = %d", cycle);
punk@1 36 endrule
punk@1 37
punk@1 38 interface Core core = coreifc;
punk@1 39
punk@1 40 interface Put doreset;
punk@1 41 method Action put(Bit#(1) x);
punk@1 42 cycle <= 0;
punk@1 43 myrst.assertReset();
punk@1 44 endmethod
punk@1 45 endinterface
punk@1 46
punk@1 47 endmodule
punk@1 48
punk@1 49 module [SceMiModule] mkSceMiLayer();
punk@1 50
punk@1 51 SceMiClockConfiguration conf = defaultValue;
punk@1 52
punk@1 53 SceMiClockPortIfc clk_port <- mkSceMiClockPort(conf);
punk@1 54 DutWrapper dut <- buildDut(mkDutWrapper, clk_port);
punk@1 55
punk@1 56 Empty mmem <- mkClientXactor(dut.core.mmem_client, clk_port);
punk@1 57 Empty tohost <- mkCPUToHostXactor(dut.core.tohost, clk_port);
punk@1 58 Empty stats <- mkCoreStatsXactor(dut.core.stats, clk_port);
punk@1 59 Empty doreset <- mkPutXactor(dut.doreset, clk_port);
punk@1 60
punk@1 61 Empty shutdown <- mkShutdownXactor();
punk@1 62
punk@1 63 endmodule
punk@1 64
punk@1 65 module [SceMiModule] mkCPUToHostXactor#(CPUToHost tohost, SceMiClockPortIfc clk_port ) (Empty);
punk@1 66
punk@1 67 // Access the controlled clock and reset
punk@1 68 Clock cclock = clk_port.cclock;
punk@1 69 Reset creset = clk_port.creset;
punk@1 70
punk@1 71 // req belongs entirely to the controlled clock domain. We'll use the
punk@1 72 // clock domain crossings already implemented by the Bluespec people (in
punk@1 73 // the Put and Get transactors), because they know about such things
punk@1 74 // better than I do.
punk@1 75 FIFO#(int) req <- mkFIFO(clocked_by cclock, reset_by creset);
punk@1 76
punk@1 77 Get#(Bit#(32)) resp = interface Get;
punk@1 78 method ActionValue#(Bit#(32)) get();
punk@1 79 req.deq();
punk@1 80 return tohost.cpuToHost(req.first());
punk@1 81 endmethod
punk@1 82 endinterface;
punk@1 83
punk@1 84 Empty request <- mkPutXactor(toPut(req), clk_port);
punk@1 85 Empty response <- mkGetXactor(resp, clk_port);
punk@1 86
punk@1 87 endmodule
punk@1 88
punk@1 89 typedef enum {
punk@1 90 DCACHE_ACCESSES, DCACHE_MISSES, DCACHE_WRITEBACKS,
punk@1 91 ICACHE_ACCESSES, ICACHE_MISSES, ICACHE_EVICTIONS,
punk@1 92 PROC_INST, PROC_CYCLES
punk@1 93 } StatID deriving(Bits, Eq);
punk@1 94
punk@1 95 module [SceMiModule] mkCoreStatsXactor#(CoreStats stats, SceMiClockPortIfc clk_port) (Empty);
punk@1 96
punk@1 97 // Access the controlled clock and reset
punk@1 98 Clock cclock = clk_port.cclock;
punk@1 99 Reset creset = clk_port.creset;
punk@1 100
punk@1 101 // Again, req and resp belong to the controlled clock domain.
punk@1 102 FIFO#(StatID) req <- mkFIFO(clocked_by cclock, reset_by creset);
punk@1 103 FIFO#(Stat) resp <- mkFIFO(clocked_by cclock, reset_by creset);
punk@1 104
punk@1 105 rule handleRequest (True);
punk@1 106 case (req.first())
punk@1 107 DCACHE_ACCESSES: begin
punk@1 108 let x <- stats.dcache.num_accesses.get();
punk@1 109 resp.enq(x);
punk@1 110 end
punk@1 111 DCACHE_MISSES: begin
punk@1 112 let x <- stats.dcache.num_misses.get();
punk@1 113 resp.enq(x);
punk@1 114 end
punk@1 115 DCACHE_WRITEBACKS: begin
punk@1 116 let x <- stats.dcache.num_writebacks.get();
punk@1 117 resp.enq(x);
punk@1 118 end
punk@1 119 ICACHE_ACCESSES: begin
punk@1 120 let x <- stats.icache.num_accesses.get();
punk@1 121 resp.enq(x);
punk@1 122 end
punk@1 123 ICACHE_MISSES: begin
punk@1 124 let x <- stats.icache.num_misses.get();
punk@1 125 resp.enq(x);
punk@1 126 end
punk@1 127 ICACHE_EVICTIONS: begin
punk@1 128 let x <- stats.icache.num_evictions.get();
punk@1 129 resp.enq(x);
punk@1 130 end
punk@1 131 PROC_INST: begin
punk@1 132 let x <- stats.proc.num_inst.get();
punk@1 133 resp.enq(x);
punk@1 134 end
punk@1 135 PROC_CYCLES: begin
punk@1 136 let x <- stats.proc.num_cycles.get();
punk@1 137 resp.enq(x);
punk@1 138 end
punk@1 139 endcase
punk@1 140 req.deq();
punk@1 141 endrule
punk@1 142
punk@1 143 Server#(StatID, Stat) server = interface Server;
punk@1 144 interface Get response = toGet(resp);
punk@1 145 interface Put request = toPut(req);
punk@1 146 endinterface;
punk@1 147
punk@1 148 Empty xx <- mkServerXactor(server, clk_port);
punk@1 149 endmodule
punk@1 150