simulation framework refactoring

This commit is contained in:
Blaise Tine
2021-10-09 10:20:42 -04:00
parent 51673665b5
commit 54bddeee9c
89 changed files with 1217 additions and 1471 deletions

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@@ -1,9 +1,16 @@
.PHONY: build_config
RTL_DIR=./rtl
SCRIPT_DIR=./scripts
DESTDIR ?= .
build_config: ./rtl/VX_config.vh
./scripts/gen_config.py -i ./rtl/VX_config.vh -o ./VX_config.h
$(MAKE) -C simulate
all: VX_config.h vortex_afu.h
VX_config.h: $(RTL_DIR)/VX_config.vh
$(SCRIPT_DIR)/gen_config.py -i $(RTL_DIR)/VX_config.vh -o $(DESTDIR)/VX_config.h
vortex_afu.h : $(RTL_DIR)/afu/vortex_afu.vh
$(SCRIPT_DIR)/gen_config.py -i $(RTL_DIR)/afu/vortex_afu.vh -o $(DESTDIR)/vortex_afu.h
clean:
rm -f ./VX_config.h
$(MAKE) -C simulate clean
rm -f $(DESTDIR)/VX_config.h $(DESTDIR)/vortex_afu.h
.PHONY: VX_config.h vortex_afu.h

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@@ -1,2 +0,0 @@
VX_config.h
/obj_dir/*

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@@ -1,99 +0,0 @@
CFLAGS += -std=c++11 -O2 -Wall -Wextra -Wfatal-errors
#CFLAGS += -std=c++11 -g -O0 -Wall -Wextra -Wfatal-errors
CFLAGS += -Wno-maybe-uninitialized
CFLAGS += -I../..
# control RTL debug print states
DBG_PRINT_FLAGS += -DDBG_PRINT_PIPELINE
DBG_PRINT_FLAGS += -DDBG_PRINT_CORE_ICACHE
DBG_PRINT_FLAGS += -DDBG_PRINT_CORE_DCACHE
DBG_PRINT_FLAGS += -DDBG_PRINT_CACHE_BANK
DBG_PRINT_FLAGS += -DDBG_PRINT_CACHE_MSHR
DBG_PRINT_FLAGS += -DDBG_PRINT_CACHE_TAG
DBG_PRINT_FLAGS += -DDBG_PRINT_CACHE_DATA
DBG_PRINT_FLAGS += -DDBG_PRINT_MEM
DBG_PRINT_FLAGS += -DDBG_PRINT_OPAE
DBG_PRINT_FLAGS += -DDBG_PRINT_AVS
DBG_PRINT_FLAGS += -DDBG_PRINT_SCOPE
DBG_FLAGS += $(DBG_PRINT_FLAGS)
DBG_FLAGS += -DDBG_CACHE_REQ_INFO
SINGLECORE = -DNUM_CLUSTERS=1 -DNUM_CORES=1 -DL2_ENABLE=0
#MULTICORE = -DNUM_CLUSTERS=2 -DNUM_CORES=4 -DL2_ENABLE=1
#MULTICORE = -DNUM_CLUSTERS=1 -DNUM_CORES=4 -DL2_ENABLE=1
MULTICORE = -DNUM_CLUSTERS=1 -DNUM_CORES=2 -DL2_ENABLE=0
SINGLECORE += $(CONFIGS)
MULTICORE += $(CONFIGS)
TOP = Vortex
RTL_DIR=../rtl
DPI_DIR=../dpi
FPU_INCLUDE = -I$(RTL_DIR)/fp_cores -I$(RTL_DIR)/fp_cores/fpnew/src/common_cells/include -I$(RTL_DIR)/fp_cores/fpnew/src/common_cells/src -I$(RTL_DIR)/fp_cores/fpnew/src/fpu_div_sqrt_mvp/hdl -I$(RTL_DIR)/fp_cores/fpnew/src
RTL_INCLUDE = -I$(RTL_DIR) -I$(DPI_DIR) -I$(RTL_DIR)/libs -I$(RTL_DIR)/interfaces -I$(RTL_DIR)/cache -I$(RTL_DIR)/simulate $(FPU_INCLUDE)
SRCS = simulator.cpp main.cpp
SRCS += $(DPI_DIR)/util_dpi.cpp $(DPI_DIR)/float_dpi.cpp
VL_FLAGS += -O2 --language 1800-2009 --assert -Wall -Wpedantic
VL_FLAGS += -Wno-DECLFILENAME -Wno-REDEFMACRO
VL_FLAGS += --x-initial unique --x-assign unique
VL_FLAGS += verilator.vlt
VL_FLAGS += --exe $(SRCS) $(RTL_INCLUDE)
VL_FLAGS += --cc $(TOP) --top-module $(TOP)
# FPU backend
FPU_CORE ?= FPU_FPNEW
VL_FLAGS += -D$(FPU_CORE)
DBG_FLAGS += -DVCD_OUTPUT
THREADS ?= $(shell python3 -c 'import multiprocessing as mp; print(max(1, mp.cpu_count() // 2))')
all: build-s
gen-s:
verilator $(VL_FLAGS) -DNDEBUG $(SINGLECORE) -CFLAGS '$(CFLAGS) -DNDEBUG $(SINGLECORE)'
gen-sd:
verilator $(VL_FLAGS) $(SINGLECORE) -CFLAGS '$(CFLAGS) $(DBG_FLAGS) $(SINGLECORE)' --trace --trace-structs $(DBG_FLAGS)
gen-st:
verilator $(VL_FLAGS) -DNDEBUG $(SINGLECORE) -CFLAGS '$(CFLAGS) -DNDEBUG $(SINGLECORE)' --threads $(THREADS)
gen-m:
verilator $(VL_FLAGS) -DNDEBUG $(MULTICORE) -CFLAGS '$(CFLAGS) -DNDEBUG $(MULTICORE)'
gen-md:
verilator $(VL_FLAGS) $(MULTICORE) -CFLAGS '$(CFLAGS) $(DBG_FLAGS) $(MULTICORE)' --trace --trace-structs $(DBG_FLAGS)
gen-mt:
verilator $(VL_FLAGS) -DNDEBUG $(MULTICORE) -CFLAGS '$(CFLAGS) -DNDEBUG $(MULTICORE)' --threads $(THREADS)
build-s: gen-s
make -j -C obj_dir -f VVortex.mk
build-sd: gen-sd
make -j -C obj_dir -f VVortex.mk
build-st: gen-st
make -j -C obj_dir -f VVortex.mk
build-m: gen-m
make -j -C obj_dir -f VVortex.mk
build-md: gen-md
make -j -C obj_dir -f VVortex.mk
build-mt: gen-mt
make -j -C obj_dir -f VVortex.mk
clean:
rm -rf obj_dir

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@@ -1,88 +0,0 @@
#include "simulator.h"
#include <iostream>
#include <fstream>
#include <iomanip>
static void show_usage() {
std::cout << "Usage: [-r] [-h: help] programs.." << std::endl;
}
bool riscv_test = false;
std::vector<const char*> programs;
static void parse_args(int argc, char **argv) {
int c;
while ((c = getopt(argc, argv, "rh?")) != -1) {
switch (c) {
case 'r':
riscv_test = true;
break;
case 'h':
case '?':
show_usage();
exit(0);
break;
default:
show_usage();
exit(-1);
}
}
for (int i = optind; i < argc; ++i) {
programs.push_back(argv[i]);
}
}
inline const char* fileExtension(const char* filepath) {
const char *ext = strrchr(filepath, '.');
if (ext == NULL || ext == filepath)
return "";
return ext + 1;
}
int main(int argc, char **argv) {
int exitcode = 0;
bool failed = false;
parse_args(argc, argv);
for (auto program : programs) {
std::cout << "Running " << program << "..." << std::endl;
RAM ram;
Simulator simulator;
simulator.attach_ram(&ram);
std::string program_ext(fileExtension(program));
if (program_ext == "bin") {
simulator.load_bin(program);
} else if (program_ext == "hex") {
simulator.load_ihex(program);
} else {
std::cout << "*** error: only *.bin or *.hex images supported." << std::endl;
return -1;
}
exitcode = simulator.run();
if (riscv_test) {
if (1 == exitcode) {
std::cout << "Passed" << std::endl;
} else {
std::cout << "Failed: exitcode=" << exitcode << std::endl;
failed = true;
}
} else {
if (exitcode != 0) {
std::cout << "*** error: exitcode=" << exitcode << std::endl;
failed = true;
}
}
if (failed)
break;
}
return failed ? exitcode : 0;
}

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@@ -1,64 +0,0 @@
#pragma once
#include <stdio.h>
#include <stdint.h>
class RAM {
private:
mutable uint8_t *mem_[(1 << 12)];
uint8_t *get(uint32_t address) const {
uint32_t block_addr = address >> 20;
uint32_t block_offset = address & 0x000FFFFF;
if (mem_[block_addr] == NULL) {
mem_[block_addr] = new uint8_t[(1 << 20)];
}
return mem_[block_addr] + block_offset;
}
public:
RAM() {
for (uint32_t i = 0; i < (1 << 12); i++) {
mem_[i] = NULL;
}
}
~RAM() {
this->clear();
}
size_t size() const {
return (1ull << 32);
}
void clear() {
for (uint32_t i = 0; i < (1 << 12); i++) {
if (mem_[i]) {
delete [] mem_[i];
mem_[i] = NULL;
}
}
}
void read(uint32_t address, uint32_t length, uint8_t *data) const {
for (unsigned i = 0; i < length; i++) {
data[i] = *this->get(address + i);
}
}
void write(uint32_t address, uint32_t length, const uint8_t *data) {
for (unsigned i = 0; i < length; i++) {
*this->get(address + i) = data[i];
}
}
uint8_t& operator[](uint32_t address) {
return *get(address);
}
const uint8_t& operator[](uint32_t address) const {
return *get(address);
}
};

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@@ -1,622 +0,0 @@
#include "simulator.h"
#include <iostream>
#include <fstream>
#include <iomanip>
#define ENABLE_MEM_STALLS
#ifndef TRACE_START_TIME
#define TRACE_START_TIME 0ull
#endif
#ifndef TRACE_STOP_TIME
#define TRACE_STOP_TIME -1ull
#endif
#ifndef MEM_LATENCY
#define MEM_LATENCY 24
#endif
#ifndef MEM_RQ_SIZE
#define MEM_RQ_SIZE 16
#endif
#ifndef MEM_STALLS_MODULO
#define MEM_STALLS_MODULO 16
#endif
#ifndef VERILATOR_RESET_VALUE
#define VERILATOR_RESET_VALUE 2
#endif
#define VL_WDATA_GETW(lwp, i, n, w) \
VL_SEL_IWII(0, n * w, 0, 0, lwp, i * w, w)
static uint64_t timestamp = 0;
double sc_time_stamp() {
return timestamp;
}
///////////////////////////////////////////////////////////////////////////////
static bool trace_enabled = false;
static uint64_t trace_start_time = TRACE_START_TIME;
static uint64_t trace_stop_time = TRACE_STOP_TIME;
bool sim_trace_enabled() {
if (timestamp >= trace_start_time
&& timestamp < trace_stop_time)
return true;
return trace_enabled;
}
void sim_trace_enable(bool enable) {
trace_enabled = enable;
}
///////////////////////////////////////////////////////////////////////////////
Simulator::Simulator() {
// force random values for unitialized signals
Verilated::randReset(VERILATOR_RESET_VALUE);
Verilated::randSeed(50);
// Turn off assertion before reset
Verilated::assertOn(false);
ram_ = nullptr;
#ifdef AXI_BUS
vortex_ = new VVortex_axi();
#else
vortex_ = new VVortex();
#endif
#ifdef VCD_OUTPUT
Verilated::traceEverOn(true);
trace_ = new VerilatedVcdC();
vortex_->trace(trace_, 99);
trace_->open("trace.vcd");
#endif
// reset the device
this->reset();
}
Simulator::~Simulator() {
for (auto& buf : print_bufs_) {
auto str = buf.second.str();
if (!str.empty()) {
std::cout << "#" << buf.first << ": " << str << std::endl;
}
}
#ifdef VCD_OUTPUT
trace_->close();
delete trace_;
#endif
delete vortex_;
}
void Simulator::attach_ram(RAM* ram) {
ram_ = ram;
for (int b = 0; b < MEMORY_BANKS; ++b) {
mem_rsp_vec_[b].clear();
}
last_mem_rsp_bank_ = 0;
}
void Simulator::reset() {
print_bufs_.clear();
for (int b = 0; b < MEMORY_BANKS; ++b) {
mem_rsp_vec_[b].clear();
}
last_mem_rsp_bank_ = 0;
mem_rd_rsp_active_ = false;
mem_wr_rsp_active_ = false;
#ifdef AXI_BUS
this->reset_axi_bus();
#else
this->reset_mem_bus();
#endif
vortex_->reset = 1;
for (int i = 0; i < RESET_DELAY; ++i) {
vortex_->clk = 0;
this->eval();
vortex_->clk = 1;
this->eval();
}
vortex_->reset = 0;
// Turn on assertion after reset
Verilated::assertOn(true);
}
void Simulator::step() {
vortex_->clk = 0;
this->eval();
#ifdef AXI_BUS
this->eval_axi_bus(0);
#else
this->eval_mem_bus(0);
#endif
vortex_->clk = 1;
this->eval();
#ifdef AXI_BUS
this->eval_axi_bus(1);
#else
this->eval_mem_bus(1);
#endif
#ifndef NDEBUG
fflush(stdout);
#endif
}
void Simulator::eval() {
vortex_->eval();
#ifdef VCD_OUTPUT
if (sim_trace_enabled()) {
trace_->dump(timestamp);
}
#endif
++timestamp;
}
#ifdef AXI_BUS
void Simulator::reset_axi_bus() {
vortex_->m_axi_wready = 0;
vortex_->m_axi_awready = 0;
vortex_->m_axi_arready = 0;
vortex_->m_axi_rvalid = 0;
}
void Simulator::eval_axi_bus(bool clk) {
if (!clk) {
mem_rd_rsp_ready_ = vortex_->m_axi_rready;
mem_wr_rsp_ready_ = vortex_->m_axi_bready;
return;
}
if (ram_ == nullptr) {
vortex_->m_axi_wready = 0;
vortex_->m_axi_awready = 0;
vortex_->m_axi_arready = 0;
return;
}
// update memory responses schedule
for (int b = 0; b < MEMORY_BANKS; ++b) {
for (auto& rsp : mem_rsp_vec_[b]) {
if (rsp.cycles_left > 0)
rsp.cycles_left -= 1;
}
}
bool has_rd_response = false;
bool has_wr_response = false;
// schedule memory responses that are ready
for (int i = 0; i < MEMORY_BANKS; ++i) {
uint32_t b = (i + last_mem_rsp_bank_ + 1) % MEMORY_BANKS;
if (!mem_rsp_vec_[b].empty()) {
auto mem_rsp_it = mem_rsp_vec_[b].begin();
if (mem_rsp_it->cycles_left <= 0) {
has_rd_response = !mem_rsp_it->write;
has_wr_response = mem_rsp_it->write;
last_mem_rsp_bank_ = b;
break;
}
}
}
// send memory read response
if (mem_rd_rsp_active_
&& vortex_->m_axi_rvalid && mem_rd_rsp_ready_) {
mem_rd_rsp_active_ = false;
}
if (!mem_rd_rsp_active_) {
if (has_rd_response) {
auto mem_rsp_it = mem_rsp_vec_[last_mem_rsp_bank_].begin();
/*
printf("%0ld: [sim] MEM Rd Rsp: bank=%d, addr=%0lx, data=", timestamp, last_mem_rsp_bank_, mem_rsp_it->addr);
for (int i = 0; i < MEM_BLOCK_SIZE; i++) {
printf("%02x", mem_rsp_it->block[(MEM_BLOCK_SIZE-1)-i]);
}
printf("\n");
*/
vortex_->m_axi_rvalid = 1;
vortex_->m_axi_rid = mem_rsp_it->tag;
vortex_->m_axi_rresp = 0;
vortex_->m_axi_rlast = 1;
memcpy((uint8_t*)vortex_->m_axi_rdata, mem_rsp_it->block.data(), MEM_BLOCK_SIZE);
mem_rsp_vec_[last_mem_rsp_bank_].erase(mem_rsp_it);
mem_rd_rsp_active_ = true;
} else {
vortex_->m_axi_rvalid = 0;
}
}
// send memory write response
if (mem_wr_rsp_active_
&& vortex_->m_axi_bvalid && mem_wr_rsp_ready_) {
mem_wr_rsp_active_ = false;
}
if (!mem_wr_rsp_active_) {
if (has_wr_response) {
auto mem_rsp_it = mem_rsp_vec_[last_mem_rsp_bank_].begin();
/*
printf("%0ld: [sim] MEM Wr Rsp: bank=%d, addr=%0lx\n", timestamp, last_mem_rsp_bank_, mem_rsp_it->addr);
*/
vortex_->m_axi_bvalid = 1;
vortex_->m_axi_bid = mem_rsp_it->tag;
vortex_->m_axi_bresp = 0;
mem_rsp_vec_[last_mem_rsp_bank_].erase(mem_rsp_it);
mem_wr_rsp_active_ = true;
} else {
vortex_->m_axi_bvalid = 0;
}
}
// select the memory bank
uint32_t req_addr = vortex_->m_axi_wvalid ? vortex_->m_axi_awaddr : vortex_->m_axi_araddr;
uint32_t req_bank = (MEMORY_BANKS >= 2) ? ((req_addr / MEM_BLOCK_SIZE) % MEMORY_BANKS) : 0;
// handle memory stalls
bool mem_stalled = false;
#ifdef ENABLE_MEM_STALLS
if (0 == ((timestamp/2) % MEM_STALLS_MODULO)) {
mem_stalled = true;
} else
if (mem_rsp_vec_[req_bank].size() >= MEM_RQ_SIZE) {
mem_stalled = true;
}
#endif
// process memory requests
if (!mem_stalled) {
if (vortex_->m_axi_wvalid || vortex_->m_axi_arvalid) {
if (vortex_->m_axi_wvalid) {
uint64_t byteen = vortex_->m_axi_wstrb;
unsigned base_addr = vortex_->m_axi_awaddr;
uint8_t* data = (uint8_t*)(vortex_->m_axi_wdata);
// detect stdout write
if (base_addr >= IO_COUT_ADDR
&& base_addr <= (IO_COUT_ADDR + IO_COUT_SIZE - 1)) {
for (int i = 0; i < MEM_BLOCK_SIZE; i++) {
if ((byteen >> i) & 0x1) {
auto& ss_buf = print_bufs_[i];
char c = data[i];
ss_buf << c;
if (c == '\n') {
std::cout << std::dec << "#" << i << ": " << ss_buf.str() << std::flush;
ss_buf.str("");
}
}
}
} else {
/*
printf("%0ld: [sim] MEM Wr: addr=%0x, byteen=%0lx, data=", timestamp, base_addr, byteen);
for (int i = 0; i < MEM_BLOCK_SIZE; i++) {
printf("%02x", data[(MEM_BLOCK_SIZE-1)-i]);
}
printf("\n");
*/
for (int i = 0; i < MEM_BLOCK_SIZE; i++) {
if ((byteen >> i) & 0x1) {
(*ram_)[base_addr + i] = data[i];
}
}
mem_req_t mem_req;
mem_req.tag = vortex_->m_axi_arid;
mem_req.addr = vortex_->m_axi_araddr;
mem_req.cycles_left = 0;
mem_req.write = 1;
mem_rsp_vec_[req_bank].emplace_back(mem_req);
}
} else {
mem_req_t mem_req;
mem_req.tag = vortex_->m_axi_arid;
mem_req.addr = vortex_->m_axi_araddr;
ram_->read(vortex_->m_axi_araddr, MEM_BLOCK_SIZE, mem_req.block.data());
mem_req.cycles_left = MEM_LATENCY;
mem_req.write = 0;
for (auto& rsp : mem_rsp_vec_[req_bank]) {
if (mem_req.addr == rsp.addr) {
// duplicate requests receive the same cycle delay
mem_req.cycles_left = rsp.cycles_left;
break;
}
}
mem_rsp_vec_[req_bank].emplace_back(mem_req);
}
}
}
vortex_->m_axi_wready = !mem_stalled;
vortex_->m_axi_awready = !mem_stalled;
vortex_->m_axi_arready = !mem_stalled;
}
#else
void Simulator::reset_mem_bus() {
vortex_->mem_req_ready = 0;
vortex_->mem_rsp_valid = 0;
}
void Simulator::eval_mem_bus(bool clk) {
if (!clk) {
mem_rd_rsp_ready_ = vortex_->mem_rsp_ready;
return;
}
if (ram_ == nullptr) {
vortex_->mem_req_ready = 0;
return;
}
// update memory responses schedule
for (int b = 0; b < MEMORY_BANKS; ++b) {
for (auto& rsp : mem_rsp_vec_[b]) {
if (rsp.cycles_left > 0)
rsp.cycles_left -= 1;
}
}
bool has_response = false;
// schedule memory responses that are ready
for (int i = 0; i < MEMORY_BANKS; ++i) {
uint32_t b = (i + last_mem_rsp_bank_ + 1) % MEMORY_BANKS;
if (!mem_rsp_vec_[b].empty()
&& (mem_rsp_vec_[b].begin()->cycles_left) <= 0) {
has_response = true;
last_mem_rsp_bank_ = b;
break;
}
}
// send memory response
if (mem_rd_rsp_active_
&& vortex_->mem_rsp_valid && mem_rd_rsp_ready_) {
mem_rd_rsp_active_ = false;
}
if (!mem_rd_rsp_active_) {
if (has_response) {
vortex_->mem_rsp_valid = 1;
auto mem_rsp_it = mem_rsp_vec_[last_mem_rsp_bank_].begin();
/*
printf("%0ld: [sim] MEM Rd: bank=%d, addr=%0lx, data=", timestamp, last_mem_rsp_bank_, mem_rsp_it->addr);
for (int i = 0; i < MEM_BLOCK_SIZE; i++) {
printf("%02x", mem_rsp_it->block[(MEM_BLOCK_SIZE-1)-i]);
}
printf("\n");
*/
memcpy((uint8_t*)vortex_->mem_rsp_data, mem_rsp_it->block.data(), MEM_BLOCK_SIZE);
vortex_->mem_rsp_tag = mem_rsp_it->tag;
mem_rsp_vec_[last_mem_rsp_bank_].erase(mem_rsp_it);
mem_rd_rsp_active_ = true;
} else {
vortex_->mem_rsp_valid = 0;
}
}
// select the memory bank
uint32_t req_bank = (MEMORY_BANKS >= 2) ? (vortex_->mem_req_addr % MEMORY_BANKS) : 0;
// handle memory stalls
bool mem_stalled = false;
#ifdef ENABLE_MEM_STALLS
if (0 == ((timestamp/2) % MEM_STALLS_MODULO)) {
mem_stalled = true;
} else
if (mem_rsp_vec_[req_bank].size() >= MEM_RQ_SIZE) {
mem_stalled = true;
}
#endif
// process memory requests
if (!mem_stalled) {
if (vortex_->mem_req_valid) {
if (vortex_->mem_req_rw) {
uint64_t byteen = vortex_->mem_req_byteen;
unsigned base_addr = (vortex_->mem_req_addr * MEM_BLOCK_SIZE);
uint8_t* data = (uint8_t*)(vortex_->mem_req_data);
if (base_addr >= IO_COUT_ADDR
&& base_addr <= (IO_COUT_ADDR + IO_COUT_SIZE - 1)) {
for (int i = 0; i < MEM_BLOCK_SIZE; i++) {
if ((byteen >> i) & 0x1) {
auto& ss_buf = print_bufs_[i];
char c = data[i];
ss_buf << c;
if (c == '\n') {
std::cout << std::dec << "#" << i << ": " << ss_buf.str() << std::flush;
ss_buf.str("");
}
}
}
} else {
/*
printf("%0ld: [sim] MEM Wr: addr=%0x, byteen=%0lx, data=", timestamp, base_addr, byteen);
for (int i = 0; i < MEM_BLOCK_SIZE; i++) {
printf("%02x", data[(MEM_BLOCK_SIZE-1)-i]);
}
printf("\n");
*/
for (int i = 0; i < MEM_BLOCK_SIZE; i++) {
if ((byteen >> i) & 0x1) {
(*ram_)[base_addr + i] = data[i];
}
}
}
} else {
mem_req_t mem_req;
mem_req.tag = vortex_->mem_req_tag;
mem_req.addr = (vortex_->mem_req_addr * MEM_BLOCK_SIZE);
ram_->read(vortex_->mem_req_addr * MEM_BLOCK_SIZE, MEM_BLOCK_SIZE, mem_req.block.data());
mem_req.cycles_left = MEM_LATENCY;
for (auto& rsp : mem_rsp_vec_[req_bank]) {
if (mem_req.addr == rsp.addr) {
// duplicate requests receive the same cycle delay
mem_req.cycles_left = rsp.cycles_left;
break;
}
}
mem_rsp_vec_[req_bank].emplace_back(mem_req);
}
}
}
vortex_->mem_req_ready = !mem_stalled;
}
#endif
void Simulator::wait(uint32_t cycles) {
for (int i = 0; i < cycles; ++i) {
this->step();
}
}
bool Simulator::is_busy() const {
return vortex_->busy;
}
int Simulator::run() {
int exitcode = 0;
#ifndef NDEBUG
std::cout << std::dec << timestamp << ": [sim] run()" << std::endl;
#endif
// execute program
while (vortex_->busy) {
if (get_ebreak()) {
exitcode = get_last_wb_value(3);
break;
}
this->step();
}
// wait 5 cycles to flush the pipeline
this->wait(5);
return exitcode;
}
bool Simulator::get_ebreak() const {
#ifdef AXI_BUS
return (int)vortex_->Vortex_axi->vortex->genblk2__BRA__0__KET____DOT__cluster->genblk2__BRA__0__KET____DOT__core->pipeline->execute->ebreak;
#else
return (int)vortex_->Vortex->genblk2__BRA__0__KET____DOT__cluster->genblk2__BRA__0__KET____DOT__core->pipeline->execute->ebreak;
#endif
}
int Simulator::get_last_wb_value(int reg) const {
#ifdef AXI_BUS
return (int)vortex_->Vortex_axi->vortex->genblk2__BRA__0__KET____DOT__cluster->genblk2__BRA__0__KET____DOT__core->pipeline->commit->writeback->last_wb_value[reg];
#else
return (int)vortex_->Vortex->genblk2__BRA__0__KET____DOT__cluster->genblk2__BRA__0__KET____DOT__core->pipeline->commit->writeback->last_wb_value[reg];
#endif
}
void Simulator::load_bin(const char* program_file) {
if (ram_ == nullptr)
return;
std::ifstream ifs(program_file);
if (!ifs) {
std::cout << "error: " << program_file << " not found" << std::endl;
}
ifs.seekg(0, ifs.end);
auto size = ifs.tellg();
std::vector<uint8_t> content(size);
ifs.seekg(0, ifs.beg);
ifs.read((char*)content.data(), size);
ram_->write(STARTUP_ADDR, size, content.data());
}
void Simulator::load_ihex(const char* program_file) {
if (ram_ == nullptr)
return;
auto hti = [&](char c)->uint32_t {
if (c >= 'A' && c <= 'F')
return c - 'A' + 10;
if (c >= 'a' && c <= 'f')
return c - 'a' + 10;
return c - '0';
};
auto hToI = [&](const char *c, uint32_t size)->uint32_t {
uint32_t value = 0;
for (uint32_t i = 0; i < size; i++) {
value += hti(c[i]) << ((size - i - 1) * 4);
}
return value;
};
std::ifstream ifs(program_file);
if (!ifs) {
std::cout << "error: " << program_file << " not found" << std::endl;
}
ifs.seekg(0, ifs.end);
uint32_t size = ifs.tellg();
std::vector<char> content(size);
ifs.seekg(0, ifs.beg);
ifs.read(content.data(), size);
int offset = 0;
char *line = content.data();
while (true) {
if (line[0] == ':') {
uint32_t byteCount = hToI(line + 1, 2);
uint32_t nextAddr = hToI(line + 3, 4) + offset;
uint32_t key = hToI(line + 7, 2);
switch (key) {
case 0:
for (uint32_t i = 0; i < byteCount; i++) {
(*ram_)[nextAddr + i] = hToI(line + 9 + i * 2, 2);
}
break;
case 2:
offset = hToI(line + 9, 4) << 4;
break;
case 4:
offset = hToI(line + 9, 4) << 16;
break;
default:
break;
}
}
while (*line != '\n' && size != 0) {
++line;
--size;
}
if (size <= 1)
break;
++line;
--size;
}
}
void Simulator::print_stats(std::ostream& out) {
out << std::left;
out << std::setw(24) << "# of total cycles:" << std::dec << timestamp/2 << std::endl;
}

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@@ -1,101 +0,0 @@
#pragma once
#include <verilated.h>
#ifdef AXI_BUS
#include "VVortex_axi.h"
#include "VVortex_axi__Syms.h"
#else
#include "VVortex.h"
#include "VVortex__Syms.h"
#endif
#ifdef VCD_OUTPUT
#include <verilated_vcd_c.h>
#endif
#include <VX_config.h>
#include "ram.h"
#include <ostream>
#include <list>
#include <vector>
#include <sstream>
#include <unordered_map>
#ifndef MEMORY_BANKS
#ifdef PLATFORM_PARAM_LOCAL_MEMORY_BANKS
#define MEMORY_BANKS PLATFORM_PARAM_LOCAL_MEMORY_BANKS
#else
#define MEMORY_BANKS 2
#endif
#endif
class Simulator {
public:
Simulator();
virtual ~Simulator();
void attach_ram(RAM* ram);
void load_bin(const char* program_file);
void load_ihex(const char* program_file);
bool is_busy() const;
void reset();
void step();
void wait(uint32_t cycles);
int run();
void print_stats(std::ostream& out);
private:
typedef struct {
int cycles_left;
std::array<uint8_t, MEM_BLOCK_SIZE> block;
uint64_t addr;
uint64_t tag;
bool write;
} mem_req_t;
std::unordered_map<int, std::stringstream> print_bufs_;
void eval();
#ifdef AXI_BUS
void reset_axi_bus();
void eval_axi_bus(bool clk);
#else
void reset_mem_bus();
void eval_mem_bus(bool clk);
#endif
int get_last_wb_value(int reg) const;
bool get_ebreak() const;
std::list<mem_req_t> mem_rsp_vec_ [MEMORY_BANKS];
uint32_t last_mem_rsp_bank_;
bool mem_rd_rsp_active_;
bool mem_rd_rsp_ready_;
bool mem_wr_rsp_active_;
bool mem_wr_rsp_ready_;
RAM *ram_;
#ifdef AXI_BUS
VVortex_axi *vortex_;
#else
VVortex *vortex_;
#endif
#ifdef VCD_OUTPUT
VerilatedVcdC *trace_;
#endif
};

View File

@@ -1,10 +0,0 @@
`verilator_config
lint_off -rule BLKANDNBLK -file "../rtl/fp_cores/fpnew/*"
lint_off -rule UNOPTFLAT -file "../rtl/fp_cores/fpnew/*"
lint_off -rule WIDTH -file "../rtl/fp_cores/fpnew/*"
lint_off -rule UNUSED -file "../rtl/fp_cores/fpnew/*"
lint_off -rule LITENDIAN -file "../rtl/fp_cores/fpnew/*"
lint_off -rule IMPORTSTAR -file "../rtl/fp_cores/fpnew/*"
lint_off -rule PINCONNECTEMPTY -file "../rtl/fp_cores/fpnew/*"
lint_off -file "../rtl/fp_cores/fpnew/*"

View File

@@ -35,5 +35,5 @@ done
# run application
pushd $PROGRAM_DIR
echo " [DBG] running ./$PROGRAM $*"
ASE_LOG=0 LD_LIBRARY_PATH=$POCL_RT_PATH/lib:$VORTEX_DRV_PATH/opae/ase:$LD_LIBRARY_PATH ./$PROGRAM $*
ASE_LOG=0 LD_LIBRARY_PATH=$POCL_RT_PATH/lib:$VORTEX_DRV_PATH/asesim:$LD_LIBRARY_PATH ./$PROGRAM $*
popd