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DBT-RISE-TGC/src/sysc/core_complex.cpp

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/*******************************************************************************
* Copyright (C) 2017, 2018 MINRES Technologies GmbH
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*******************************************************************************/
// clang-format off
#include <iss/debugger/gdb_session.h>
#include <iss/debugger/encoderdecoder.h>
#include <iss/debugger/server.h>
#include <iss/debugger/target_adapter_if.h>
#include <iss/iss.h>
#include <iss/vm_types.h>
#include "iss_factory.h"
#ifndef WIN32
#include <iss/plugin/loader.h>
#endif
#include "sc_core_adapter_if.h"
#include <iss/arch/tgc_mapper.h>
#include <scc/report.h>
#include <util/ities.h>
#include <iostream>
#include <sstream>
#include <array>
#include <numeric>
#include <iss/plugin/cycle_estimate.h>
#include <iss/plugin/instruction_count.h>
// clang-format on
#define STR(X) #X
#define CREATE_CORE(CN) \
if(type == STR(CN)) { \
std::tie(cpu, vm) = create_core<CN##_plat_type>(backend, gdb_port, hart_id); \
} else
#ifdef HAS_SCV
#include <scv.h>
#else
#include <scv-tr.h>
using namespace scv_tr;
#endif
#ifndef CWR_SYSTEMC
#define GET_PROP_VALUE(P) P.get_value()
#else
#define GET_PROP_VALUE(P) P.getValue()
#endif
#ifdef _MSC_VER
// not #if defined(_WIN32) || defined(_WIN64) because we have strncasecmp in mingw
#define strncasecmp _strnicmp
#define strcasecmp _stricmp
#endif
namespace sysc {
namespace tgfs {
using namespace std;
using namespace iss;
using namespace logging;
using namespace sc_core;
namespace {
iss::debugger::encoder_decoder encdec;
std::array<const char, 4> lvl = {{'U', 'S', 'H', 'M'}};
} // namespace
int cmd_sysc(int argc, char* argv[], debugger::out_func of, debugger::data_func df, debugger::target_adapter_if* tgt_adapter) {
if(argc > 1) {
if(strcasecmp(argv[1], "print_time") == 0) {
std::string t = sc_time_stamp().to_string();
of(t.c_str());
std::array<char, 64> buf;
encdec.enc_string(t.c_str(), buf.data(), 63);
df(buf.data());
return Ok;
} else if(strcasecmp(argv[1], "break") == 0) {
sc_time t;
if(argc == 4) {
t = scc::parse_from_string(argv[2], argv[3]);
} else if(argc == 3) {
t = scc::parse_from_string(argv[2]);
} else
return Err;
// no check needed as it is only called if debug server is active
tgt_adapter->add_break_condition([t]() -> unsigned {
SCCTRACE() << "Checking condition at " << sc_time_stamp();
return sc_time_stamp() >= t ? std::numeric_limits<unsigned>::max() : 0;
});
return Ok;
}
return Err;
}
return Err;
}
using cpu_ptr = std::unique_ptr<iss::arch_if>;
using vm_ptr = std::unique_ptr<iss::vm_if>;
class core_wrapper {
public:
core_wrapper(core_complex* owner)
: owner(owner) {}
void reset(uint64_t addr) { vm->reset(addr); }
inline void start(bool dump = false) { vm->start(std::numeric_limits<uint64_t>::max(), dump); }
inline std::pair<uint64_t, bool> load_file(std::string const& name) {
iss::arch_if* cc = cpu->get_arch_if();
return cc->load_file(name);
};
std::function<unsigned(void)> get_mode;
std::function<uint64_t(void)> get_state;
std::function<bool(void)> get_interrupt_execution;
std::function<void(bool)> set_interrupt_execution;
std::function<void(short, bool)> local_irq;
void create_cpu(std::string const& type, std::string const& backend, unsigned gdb_port, uint32_t hart_id) {
auto& f = sysc::iss_factory::instance();
if(type.size() == 0 || type == "?") {
std::cout << "Available cores: " << util::join(f.get_names(), ", ") << std::endl;
sc_core::sc_stop();
} else if(type.find('|') != std::string::npos) {
std::tie(cpu, vm) = f.create(type + "|" + backend);
} else {
auto base_isa = type.substr(0, 5);
if(base_isa == "tgc5d" || base_isa == "tgc5e") {
std::tie(cpu, vm) = f.create(type + "|mu_p_clic_pmp|" + backend, gdb_port, owner);
} else {
std::tie(cpu, vm) = f.create(type + "|m_p|" + backend, gdb_port, owner);
}
}
if(!cpu) {
SCCFATAL() << "Could not create cpu for isa " << type << " and backend " << backend;
}
if(!vm) {
SCCFATAL() << "Could not create vm for isa " << type << " and backend " << backend;
}
auto* sc_cpu_if = reinterpret_cast<sc_core_adapter_if*>(cpu.get());
sc_cpu_if->set_mhartid(hart_id);
get_mode = [sc_cpu_if]() { return sc_cpu_if->get_mode(); };
get_state = [sc_cpu_if]() { return sc_cpu_if->get_state(); };
get_interrupt_execution = [sc_cpu_if]() { return sc_cpu_if->get_interrupt_execution(); };
set_interrupt_execution = [sc_cpu_if](bool b) { return sc_cpu_if->set_interrupt_execution(b); };
local_irq = [sc_cpu_if](short s, bool b) { return sc_cpu_if->local_irq(s, b); };
auto* srv = debugger::server<debugger::gdb_session>::get();
if(srv)
tgt_adapter = srv->get_target();
if(tgt_adapter)
tgt_adapter->add_custom_command({"sysc",
[this](int argc, char* argv[], debugger::out_func of, debugger::data_func df) -> int {
return cmd_sysc(argc, argv, of, df, tgt_adapter);
},
"SystemC sub-commands: break <time>, print_time"});
}
core_complex* const owner;
vm_ptr vm{nullptr};
sc_cpu_ptr cpu{nullptr};
iss::debugger::target_adapter_if* tgt_adapter{nullptr};
};
struct core_trace {
//! transaction recording database
scv_tr_db* m_db{nullptr};
//! blocking transaction recording stream handle
scv_tr_stream* stream_handle{nullptr};
//! transaction generator handle for blocking transactions
scv_tr_generator<_scv_tr_generator_default_data, _scv_tr_generator_default_data>* instr_tr_handle{nullptr};
scv_tr_handle tr_handle;
};
SC_HAS_PROCESS(core_complex); // NOLINT
#ifndef CWR_SYSTEMC
core_complex::core_complex(sc_module_name const& name)
: sc_module(name)
, fetch_lut(tlm_dmi_ext())
, read_lut(tlm_dmi_ext())
, write_lut(tlm_dmi_ext()) {
init();
}
#endif
void core_complex::init() {
trc = new core_trace();
ibus.register_invalidate_direct_mem_ptr([=](uint64_t start, uint64_t end) -> void {
auto lut_entry = fetch_lut.getEntry(start);
if(lut_entry.get_granted_access() != tlm::tlm_dmi::DMI_ACCESS_NONE && end <= lut_entry.get_end_address() + 1) {
fetch_lut.removeEntry(lut_entry);
}
});
dbus.register_invalidate_direct_mem_ptr([=](uint64_t start, uint64_t end) -> void {
auto lut_entry = read_lut.getEntry(start);
if(lut_entry.get_granted_access() != tlm::tlm_dmi::DMI_ACCESS_NONE && end <= lut_entry.get_end_address() + 1) {
read_lut.removeEntry(lut_entry);
}
lut_entry = write_lut.getEntry(start);
if(lut_entry.get_granted_access() != tlm::tlm_dmi::DMI_ACCESS_NONE && end <= lut_entry.get_end_address() + 1) {
write_lut.removeEntry(lut_entry);
}
});
SC_THREAD(run);
SC_METHOD(rst_cb);
sensitive << rst_i;
SC_METHOD(sw_irq_cb);
sensitive << sw_irq_i;
SC_METHOD(timer_irq_cb);
sensitive << timer_irq_i;
SC_METHOD(ext_irq_cb);
sensitive << ext_irq_i;
SC_METHOD(local_irq_cb);
for(auto pin : local_irq_i)
sensitive << pin;
trc->m_db = scv_tr_db::get_default_db();
SC_METHOD(forward);
#ifndef CWR_SYSTEMC
sensitive << clk_i;
#else
sensitive << curr_clk;
t2t.reset(new scc::tick2time{"t2t"});
t2t->clk_i(clk_i);
t2t->clk_o(curr_clk);
#endif
}
core_complex::~core_complex() {
delete cpu;
delete trc;
for(auto* p : plugin_list)
delete p;
}
void core_complex::trace(sc_trace_file* trf) const {}
void core_complex::before_end_of_elaboration() {
SCCDEBUG(SCMOD) << "instantiating iss::arch::tgf with " << GET_PROP_VALUE(backend) << " backend";
// cpu = scc::make_unique<core_wrapper>(this);
cpu = new core_wrapper(this);
cpu->create_cpu(GET_PROP_VALUE(core_type), GET_PROP_VALUE(backend), GET_PROP_VALUE(gdb_server_port), GET_PROP_VALUE(mhartid));
sc_assert(cpu->vm != nullptr);
cpu->vm->setDisassEnabled(GET_PROP_VALUE(enable_disass) || trc->m_db != nullptr);
if(GET_PROP_VALUE(plugins).length()) {
auto p = util::split(GET_PROP_VALUE(plugins), ';');
for(std::string const& opt_val : p) {
std::string plugin_name = opt_val;
std::string filename{"cycles.txt"};
std::size_t found = opt_val.find('=');
if(found != std::string::npos) {
plugin_name = opt_val.substr(0, found);
filename = opt_val.substr(found + 1, opt_val.size());
}
if(plugin_name == "ic") {
auto* plugin = new iss::plugin::instruction_count(filename);
cpu->vm->register_plugin(*plugin);
plugin_list.push_back(plugin);
} else if(plugin_name == "ce") {
auto* plugin = new iss::plugin::cycle_estimate(filename);
cpu->vm->register_plugin(*plugin);
plugin_list.push_back(plugin);
} else {
#ifndef WIN32
std::array<char const*, 1> a{{filename.c_str()}};
iss::plugin::loader l(plugin_name, {{"initPlugin"}});
auto* plugin = l.call_function<iss::vm_plugin*>("initPlugin", a.size(), a.data());
if(plugin) {
cpu->vm->register_plugin(*plugin);
plugin_list.push_back(plugin);
} else
#endif
SCCERR(SCMOD) << "Unknown plugin '" << plugin_name << "' or plugin not found";
}
}
}
}
void core_complex::start_of_simulation() {
// quantum_keeper.reset();
if(GET_PROP_VALUE(elf_file).size() > 0) {
istringstream is(GET_PROP_VALUE(elf_file));
string s;
while(getline(is, s, ',')) {
std::pair<uint64_t, bool> start_addr = cpu->load_file(s);
#ifndef CWR_SYSTEMC
if(reset_address.is_default_value() && start_addr.second == true)
reset_address.set_value(start_addr.first);
#else
if(start_addr.second == true)
reset_address = start_addr.first;
#endif
}
}
if(trc->m_db != nullptr && trc->stream_handle == nullptr) {
string basename(this->name());
trc->stream_handle = new scv_tr_stream((basename + ".instr").c_str(), "TRANSACTOR", trc->m_db);
trc->instr_tr_handle = new scv_tr_generator<>("execute", *trc->stream_handle);
}
}
bool core_complex::disass_output(uint64_t pc, const std::string instr_str) {
if(trc->m_db == nullptr)
return false;
if(trc->tr_handle.is_active())
trc->tr_handle.end_transaction();
trc->tr_handle = trc->instr_tr_handle->begin_transaction();
trc->tr_handle.record_attribute("PC", pc);
trc->tr_handle.record_attribute("INSTR", instr_str);
trc->tr_handle.record_attribute("MODE", lvl[cpu->get_mode()]);
trc->tr_handle.record_attribute("MSTATUS", cpu->get_state());
trc->tr_handle.record_attribute("LTIME_START", quantum_keeper.get_current_time().value() / 1000);
return true;
}
void core_complex::forward() {
#ifndef CWR_SYSTEMC
set_clock_period(clk_i.read());
#else
set_clock_period(curr_clk.read());
#endif
}
void core_complex::set_clock_period(sc_core::sc_time period) {
curr_clk = period;
if(period == SC_ZERO_TIME)
cpu->set_interrupt_execution(true);
}
void core_complex::rst_cb() {
if(rst_i.read())
cpu->set_interrupt_execution(true);
}
void core_complex::sw_irq_cb() { cpu->local_irq(3, sw_irq_i.read()); }
void core_complex::timer_irq_cb() { cpu->local_irq(7, timer_irq_i.read()); }
void core_complex::ext_irq_cb() { cpu->local_irq(11, ext_irq_i.read()); }
void core_complex::local_irq_cb() {
for(auto i = 0U; i < local_irq_i.size(); ++i) {
if(local_irq_i[i].event()) {
cpu->local_irq(16 + i, local_irq_i[i].read());
}
}
}
void core_complex::run() {
wait(SC_ZERO_TIME); // separate from elaboration phase
do {
wait(SC_ZERO_TIME);
if(rst_i.read()) {
cpu->reset(GET_PROP_VALUE(reset_address));
wait(rst_i.negedge_event());
}
while(curr_clk.read() == SC_ZERO_TIME) {
wait(curr_clk.value_changed_event());
}
quantum_keeper.reset();
cpu->set_interrupt_execution(false);
cpu->start(dump_ir);
} while(cpu->get_interrupt_execution());
sc_stop();
}
bool core_complex::read_mem(uint64_t addr, unsigned length, uint8_t* const data, bool is_fetch) {
auto& dmi_lut = is_fetch ? fetch_lut : read_lut;
auto lut_entry = dmi_lut.getEntry(addr);
if(lut_entry.get_granted_access() != tlm::tlm_dmi::DMI_ACCESS_NONE && addr + length <= lut_entry.get_end_address() + 1) {
auto offset = addr - lut_entry.get_start_address();
std::copy(lut_entry.get_dmi_ptr() + offset, lut_entry.get_dmi_ptr() + offset + length, data);
if(is_fetch)
ibus_inc += lut_entry.get_read_latency() / curr_clk;
else
dbus_inc += lut_entry.get_read_latency() / curr_clk;
return true;
} else {
auto& sckt = is_fetch ? ibus : dbus;
tlm::tlm_generic_payload gp;
gp.set_command(tlm::TLM_READ_COMMAND);
gp.set_address(addr);
gp.set_data_ptr(data);
gp.set_data_length(length);
gp.set_streaming_width(length);
sc_time delay = quantum_keeper.get_local_time();
if(trc->m_db != nullptr && trc->tr_handle.is_valid()) {
if(is_fetch && trc->tr_handle.is_active()) {
trc->tr_handle.end_transaction();
}
auto preExt = new tlm::scc::scv::tlm_recording_extension(trc->tr_handle, this);
gp.set_extension(preExt);
}
auto pre_delay = delay;
dbus->b_transport(gp, delay);
if(pre_delay > delay) {
quantum_keeper.reset();
} else {
auto incr = (delay - quantum_keeper.get_local_time()) / curr_clk;
if(is_fetch)
ibus_inc += incr;
else
dbus_inc += incr;
}
SCCTRACE(this->name()) << "[local time: " << delay << "]: finish read_mem(0x" << std::hex << addr << ") : 0x"
<< (length == 4 ? *(uint32_t*)data : length == 2 ? *(uint16_t*)data : (unsigned)*data);
if(gp.get_response_status() != tlm::TLM_OK_RESPONSE) {
return false;
}
if(gp.is_dmi_allowed() && !GET_PROP_VALUE(disable_dmi)) {
gp.set_command(tlm::TLM_READ_COMMAND);
gp.set_address(addr);
tlm_dmi_ext dmi_data;
if(sckt->get_direct_mem_ptr(gp, dmi_data)) {
if(dmi_data.is_read_allowed())
dmi_lut.addEntry(dmi_data, dmi_data.get_start_address(), dmi_data.get_end_address() - dmi_data.get_start_address() + 1);
}
}
return true;
}
}
bool core_complex::write_mem(uint64_t addr, unsigned length, const uint8_t* const data) {
auto lut_entry = write_lut.getEntry(addr);
if(lut_entry.get_granted_access() != tlm::tlm_dmi::DMI_ACCESS_NONE && addr + length <= lut_entry.get_end_address() + 1) {
auto offset = addr - lut_entry.get_start_address();
std::copy(data, data + length, lut_entry.get_dmi_ptr() + offset);
dbus_inc += lut_entry.get_write_latency() / curr_clk;
return true;
} else {
write_buf.resize(length);
std::copy(data, data + length, write_buf.begin()); // need to copy as TLM does not guarantee data integrity
tlm::tlm_generic_payload gp;
gp.set_command(tlm::TLM_WRITE_COMMAND);
gp.set_address(addr);
gp.set_data_ptr(write_buf.data());
gp.set_data_length(length);
gp.set_streaming_width(length);
sc_time delay = quantum_keeper.get_local_time();
if(trc->m_db != nullptr && trc->tr_handle.is_valid()) {
auto preExt = new tlm::scc::scv::tlm_recording_extension(trc->tr_handle, this);
gp.set_extension(preExt);
}
auto pre_delay = delay;
dbus->b_transport(gp, delay);
if(pre_delay > delay)
quantum_keeper.reset();
else
dbus_inc += (delay - quantum_keeper.get_local_time()) / curr_clk;
SCCTRACE() << "[local time: " << delay << "]: finish write_mem(0x" << std::hex << addr << ") : 0x"
<< (length == 4 ? *(uint32_t*)data : length == 2 ? *(uint16_t*)data : (unsigned)*data);
if(gp.get_response_status() != tlm::TLM_OK_RESPONSE) {
return false;
}
if(gp.is_dmi_allowed() && !GET_PROP_VALUE(disable_dmi)) {
gp.set_command(tlm::TLM_READ_COMMAND);
gp.set_address(addr);
tlm_dmi_ext dmi_data;
if(dbus->get_direct_mem_ptr(gp, dmi_data)) {
if(dmi_data.is_write_allowed())
write_lut.addEntry(dmi_data, dmi_data.get_start_address(),
dmi_data.get_end_address() - dmi_data.get_start_address() + 1);
}
}
return true;
}
}
bool core_complex::read_mem_dbg(uint64_t addr, unsigned length, uint8_t* const data) {
tlm::tlm_generic_payload gp;
gp.set_command(tlm::TLM_READ_COMMAND);
gp.set_address(addr);
gp.set_data_ptr(data);
gp.set_data_length(length);
gp.set_streaming_width(length);
return dbus->transport_dbg(gp) == length;
}
bool core_complex::write_mem_dbg(uint64_t addr, unsigned length, const uint8_t* const data) {
write_buf.resize(length);
std::copy(data, data + length, write_buf.begin()); // need to copy as TLM does not guarantee data integrity
tlm::tlm_generic_payload gp;
gp.set_command(tlm::TLM_WRITE_COMMAND);
gp.set_address(addr);
gp.set_data_ptr(write_buf.data());
gp.set_data_length(length);
gp.set_streaming_width(length);
return dbus->transport_dbg(gp) == length;
}
} /* namespace tgfs */
} /* namespace sysc */
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