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adds APB pinlevel adapter

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This commit is contained in:
Eyck Jentzsch
2024-08-06 16:02:03 +02:00
parent 8f8e8f928c
commit 614b1f9215
5 changed files with 355 additions and 1 deletions
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255
tests/apb_pin_level/bus_test.cpp Normal file
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#include "testbench.h"
#include <factory.h>
#include <tlm/scc/tlm_gp_shared.h>
#undef CHECK
#include <catch2/catch_all.hpp>
#include <unordered_map>
using namespace sc_core;
using namespace ahb;
factory::add<testbench> tb;
bool is_equal(tlm::tlm_generic_payload const& a, tlm::tlm_generic_payload const& b) {
auto ret = true;
ret &= a.get_command() == b.get_command();
ret &= a.get_address() == b.get_address();
ret &= a.get_data_length() == b.get_data_length();
for(auto i = 0u; i < a.get_data_length(); ++i)
ret &= a.get_data_ptr()[i] == b.get_data_ptr()[i];
// if(a.get_byte_enable_ptr() && b.get_byte_enable_ptr()) {
// ret &= a.get_byte_enable_length() == b.get_byte_enable_length();
// for(auto i=0u; i<a.get_byte_enable_length(); ++i)
// ret &= a.get_byte_enable_ptr()[i] == b.get_byte_enable_ptr()[i];
// }
ret &= a.get_command() == b.get_command();
// if(!ret) SCCWARN()<<"Comparison failed: "<<a<<" and "<<b;
return ret;
}
template <unsigned BUSWIDTH> tlm::tlm_generic_payload* prepare_trans(uint64_t start_address, unsigned len, unsigned width) {
static unsigned id{0};
auto trans = tlm::scc::tlm_mm<>::get().allocate<apb::apb_extension>(len);
trans->set_address(start_address);
tlm::scc::setId(*trans, ++id);
auto ext = trans->get_extension<apb::apb_extension>();
trans->set_data_length(len);
trans->set_streaming_width(len);
ext->set_instruction();
return trans;
}
inline void randomize(tlm::tlm_generic_payload& gp) {
static uint8_t req_cnt{0};
for(size_t i = 0; i < gp.get_data_length(); ++i) {
*(gp.get_data_ptr() + i) = i % 2 ? i : req_cnt;
}
req_cnt++;
}
template <typename STATE> unsigned run_scenario(STATE& state, unsigned wait_states = 0) {
auto& dut = factory::get<testbench>();
dut.register_b_transport([&state, wait_states](tlm::tlm_base_protocol_types::tlm_payload_type& trans, sc_core::sc_time& d) {
if(trans.is_read()) {
for(size_t i = 0; i < trans.get_data_length(); ++i) {
*(trans.get_data_ptr() + i) = i % 2 ? i : (state.resp_cnt + 128);
}
state.read_tx.second.emplace_back(&trans);
}
if(trans.is_write())
state.write_tx.second.emplace_back(&trans);
SCCDEBUG(__FUNCTION__) << "RX: " << trans;
for(unsigned i = 0; i < wait_states; ++i)
sc_core::wait(factory::get<testbench>().clk.posedge_event());
state.resp_cnt++;
trans.set_response_status(tlm::TLM_OK_RESPONSE);
});
dut.rst_n.write(false);
sc_start(state.ResetCycles * dut.clk.period());
dut.rst_n.write(true);
sc_start(dut.clk.period());
sc_start(dut.clk.period());
auto run1 = sc_spawn([&dut, &state]() {
unsigned int StartAddr{0x0};
for(int i = 0; i < state.NumberOfIterations; ++i) {
tlm::scc::tlm_gp_shared_ptr trans =
prepare_trans<testbench::DATA_WIDTH>(StartAddr, state.BurstLengthByte, state.BurstSizeBytes);
trans->set_command(tlm::TLM_READ_COMMAND);
SCCDEBUG(__FUNCTION__) << "task run1, iteration " << i << " TX: " << *trans;
sc_core::sc_time d;
dut.isck->b_transport(*trans, d);
state.read_tx.first.emplace_back(trans);
StartAddr += state.BurstSizeBytes;
}
SCCDEBUG(__FUNCTION__) << "task run1 finished";
});
auto run2 = sc_spawn([&dut, &state]() {
unsigned int StartAddr{0x2000};
for(int i = 0; i < state.NumberOfIterations; ++i) {
tlm::scc::tlm_gp_shared_ptr trans =
prepare_trans<testbench::DATA_WIDTH>(StartAddr, state.BurstLengthByte, state.BurstSizeBytes);
trans->set_command(tlm::TLM_WRITE_COMMAND);
randomize(*trans);
SCCDEBUG(__FUNCTION__) << "task run2, iteration " << i << " TX: " << *trans;
sc_core::sc_time d;
dut.isck->b_transport(*trans, d);
state.write_tx.first.emplace_back(trans);
StartAddr += state.BurstSizeBytes;
}
SCCDEBUG(__FUNCTION__) << "task run2 finished";
});
auto run3 = sc_spawn([&dut, &state]() {
unsigned int StartAddr{0x1000};
for(int i = 0; i < state.NumberOfIterations; ++i) {
tlm::scc::tlm_gp_shared_ptr trans =
prepare_trans<testbench::DATA_WIDTH>(StartAddr, state.BurstLengthByte, state.BurstSizeBytes);
trans->set_command(tlm::TLM_READ_COMMAND);
SCCDEBUG(__FUNCTION__) << "task run3, iteration " << i << " TX: " << *trans;
sc_core::sc_time d;
dut.isck->b_transport(*trans, d);
state.read_tx.first.emplace_back(trans);
StartAddr += state.BurstSizeBytes;
}
SCCDEBUG(__FUNCTION__) << "task run3 finished";
});
auto run4 = sc_spawn([&dut, &state]() {
unsigned int StartAddr{0x3000};
for(int i = 0; i < state.NumberOfIterations; ++i) {
tlm::scc::tlm_gp_shared_ptr trans =
prepare_trans<testbench::DATA_WIDTH>(StartAddr, state.BurstLengthByte, state.BurstSizeBytes);
trans->set_command(tlm::TLM_WRITE_COMMAND);
randomize(*trans);
SCCDEBUG(__FUNCTION__) << "task run4, iteration " << i << " TX: " << *trans;
sc_core::sc_time d;
dut.isck->b_transport(*trans, d);
state.write_tx.first.emplace_back(trans);
StartAddr += state.BurstSizeBytes;
}
SCCDEBUG(__FUNCTION__) << "task run4 finished";
});
unsigned cycles{0};
while(cycles < 1000 && !(run1.terminated() && run2.terminated() && run3.terminated() && run4.terminated())) {
sc_start(10 * dut.clk.period());
cycles += 10;
}
return cycles;
}
TEST_CASE("apb_read_write", "[APB][pin-level]") {
struct {
unsigned int ResetCycles{4};
unsigned int BurstLengthByte{4};
unsigned int BurstSizeBytes{4};
unsigned int NumberOfIterations{1};
std::pair<std::vector<tlm::scc::tlm_gp_shared_ptr>, std::vector<tlm::scc::tlm_gp_shared_ptr>> read_tx;
std::pair<std::vector<tlm::scc::tlm_gp_shared_ptr>, std::vector<tlm::scc::tlm_gp_shared_ptr>> write_tx;
unsigned resp_cnt{0};
} state;
auto cycles = run_scenario(state);
REQUIRE(cycles < 1000);
REQUIRE(sc_report_handler::get_count(SC_ERROR) == 0);
REQUIRE(sc_report_handler::get_count(SC_WARNING) == 0);
REQUIRE(state.resp_cnt == 4 * state.NumberOfIterations);
{
auto& e = state.write_tx;
auto const& send_tx = e.first;
auto const& recv_tx = e.second;
REQUIRE(send_tx.size() == recv_tx.size());
for(auto i = 0; i < send_tx.size(); ++i) {
REQUIRE(send_tx[i]->get_response_status() == tlm::TLM_OK_RESPONSE);
CHECK(is_equal(*send_tx[i], *recv_tx[i]));
}
}
{
auto& e = state.read_tx;
auto const& send_tx = e.first;
auto const& recv_tx = e.second;
REQUIRE(send_tx.size() == recv_tx.size());
for(auto i = 0; i < send_tx.size(); ++i) {
REQUIRE(send_tx[i]->get_response_status() == tlm::TLM_OK_RESPONSE);
CHECK(is_equal(*send_tx[i], *recv_tx[i]));
}
}
}
TEST_CASE("apb_narrow_read_write", "[APB][pin-level]") {
struct {
unsigned int ResetCycles{4};
unsigned int BurstLengthByte{1};
unsigned int BurstSizeBytes{1};
unsigned int NumberOfIterations{8};
std::pair<std::vector<tlm::scc::tlm_gp_shared_ptr>, std::vector<tlm::scc::tlm_gp_shared_ptr>> read_tx;
std::pair<std::vector<tlm::scc::tlm_gp_shared_ptr>, std::vector<tlm::scc::tlm_gp_shared_ptr>> write_tx;
unsigned resp_cnt{0};
} state;
auto cycles = run_scenario(state);
REQUIRE(cycles < 1000);
REQUIRE(sc_report_handler::get_count(SC_ERROR) == 0);
REQUIRE(sc_report_handler::get_count(SC_WARNING) == 0);
REQUIRE(state.resp_cnt == 4 * state.NumberOfIterations);
{
auto& e = state.write_tx;
auto const& send_tx = e.first;
auto const& recv_tx = e.second;
REQUIRE(send_tx.size() == recv_tx.size());
for(auto i = 0; i < send_tx.size(); ++i)
CHECK(is_equal(*send_tx[i], *recv_tx[i]));
}
{
auto& e = state.read_tx;
auto const& send_tx = e.first;
auto const& recv_tx = e.second;
REQUIRE(send_tx.size() == recv_tx.size());
// Narrow reads cannot be checked as they arrive a word read at the target
// for(auto i = 0; i < send_tx.size(); ++i)
// CHECK(is_equal(*send_tx[i], *recv_tx[i]));
}
}
TEST_CASE("apb_delayed_read_write", "[APB][pin-level]") {
struct {
unsigned int ResetCycles{4};
unsigned int BurstLengthByte{4};
unsigned int BurstSizeBytes{4};
unsigned int NumberOfIterations{2};
std::pair<std::vector<tlm::scc::tlm_gp_shared_ptr>, std::vector<tlm::scc::tlm_gp_shared_ptr>> read_tx;
std::pair<std::vector<tlm::scc::tlm_gp_shared_ptr>, std::vector<tlm::scc::tlm_gp_shared_ptr>> write_tx;
unsigned resp_cnt{0};
} state;
auto cycles = run_scenario(state, 2);
REQUIRE(cycles < 1000);
REQUIRE(sc_report_handler::get_count(SC_ERROR) == 0);
REQUIRE(sc_report_handler::get_count(SC_WARNING) == 0);
REQUIRE(state.resp_cnt == 4 * state.NumberOfIterations);
{
auto& e = state.write_tx;
auto const& send_tx = e.first;
auto const& recv_tx = e.second;
REQUIRE(send_tx.size() == recv_tx.size());
for(auto i = 0; i < send_tx.size(); ++i) {
REQUIRE(send_tx[i]->get_response_status() == tlm::TLM_OK_RESPONSE);
CHECK(is_equal(*send_tx[i], *recv_tx[i]));
}
}
{
auto& e = state.read_tx;
auto const& send_tx = e.first;
auto const& recv_tx = e.second;
REQUIRE(send_tx.size() == recv_tx.size());
for(auto i = 0; i < send_tx.size(); ++i) {
REQUIRE(send_tx[i]->get_response_status() == tlm::TLM_OK_RESPONSE);
CHECK(is_equal(*send_tx[i], *recv_tx[i]));
}
}
}