59 lines
1020 B
C++
59 lines
1020 B
C++
#pragma once
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#include "VVortex_Socket.h"
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#include "VVortex_Socket__Syms.h"
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#include "verilated.h"
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#ifdef VCD_OUTPUT
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#include <verilated_vcd_c.h>
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#endif
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#include "VX_config.h"
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#include "ram.h"
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#include <ostream>
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#include <vector>
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//#define ENABLE_DRAM_STALLS
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#define DRAM_LATENCY 200
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#define DRAM_RQ_SIZE 16
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#define DRAM_STALLS_MODULO 16
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#define PIPELINE_FLUSH_LATENCY 300
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typedef struct {
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int cycles_left;
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unsigned *data;
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unsigned tag;
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} dram_req_t;
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class Simulator {
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public:
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Simulator(RAM *ram);
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virtual ~Simulator();
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bool is_busy();
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void reset();
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void step();
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void flush_caches(uint32_t mem_addr, uint32_t size);
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bool run();
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void print_stats(std::ostream& out);
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private:
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void eval();
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void wait(uint32_t cycles);
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void dbus_driver();
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void io_handler();
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void send_snoops(uint32_t mem_addr, uint32_t size);
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bool dram_stalled_;
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std::vector<dram_req_t> dram_req_vec_;
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RAM *ram_;
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VVortex_Socket *vortex_;
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#ifdef VCD_OUTPUT
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VerilatedVcdC *trace_;
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#endif
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}; |