adds a test for scc::memory

tests/tlm_memory/memory_test.cpp

@@ -0,0 +1,137 @@
+
+#include "testbench.h"
+#include <factory.h>
+#include <tlm/scc/tlm_gp_shared.h>
+#undef CHECK
+#include <array>
+#include <catch2/catch_all.hpp>
+#include <cstdint>
+#include <deque>
+#include <unordered_map>
+
+using namespace sc_core;
+namespace scc {
+factory::add<testbench> tb;
+
+template <typename T> void prepare_trans(tlm::tlm_generic_payload& trans, tlm::tlm_command cmd, uint64_t addr, T val) {
+    unsigned len = cmd == tlm::TLM_IGNORE_COMMAND ? 0 : sizeof(val);
+    unsigned char* data = len ? new unsigned char[len] : nullptr;
+    if(cmd == tlm::TLM_WRITE_COMMAND) {
+        memcpy(data, &val, len);
+        trans.set_command(cmd);
+    }
+    if(cmd == tlm::TLM_READ_COMMAND) {
+        memset(data, 0, len);
+        trans.set_command(tlm::TLM_READ_COMMAND);
+    }
+    trans.set_address(addr);
+    trans.set_data_ptr(data);
+    trans.set_data_length(len);
+    trans.set_streaming_width(len);
+    trans.set_response_status(tlm::TLM_INCOMPLETE_RESPONSE);
+}
+
+TEST_CASE("simple_read_write_with host memory map", "[memory][tlm-level]") {
+    auto& dut = factory::get<testbench>();
+    std::array<unsigned char, 256> ref_data;
+    auto val = 256;
+    for(auto& e : ref_data)
+        e = --val;
+    dut.rst.write(true);
+    sc_start(10 * dut.clk.read());
+    dut.rst.write(false);
+    sc_start(dut.clk.read());
+    {
+        tlm::tlm_generic_payload gp;
+        sc_core::sc_time t;
+        for(uint64_t addr = 0; addr < 1024; addr += sizeof(uint64_t)) {
+            prepare_trans(gp, tlm::TLM_WRITE_COMMAND, addr, 123456789ULL);
+            dut.isck->b_transport(gp, t);
+            delete gp.get_data_ptr();
+            sc_start(dut.clk.read());
+        }
+    }
+    {
+        tlm::tlm_generic_payload gp;
+        prepare_trans(gp, tlm::TLM_READ_COMMAND, 256, 0ULL);
+        sc_core::sc_time t;
+        dut.isck->b_transport(gp, t);
+        uint64_t res;
+        memcpy(&res, gp.get_data_ptr(), sizeof(uint64_t));
+        REQUIRE(res == 123456789ULL);
+        delete gp.get_data_ptr();
+    }
+    sc_start(dut.clk.read());
+    {
+        tlm::tlm_generic_payload gp;
+        gp.set_command(tlm::TLM_IGNORE_COMMAND);
+        gp.set_address(256);
+        gp.set_data_ptr(nullptr);
+        gp.set_data_length(256);
+        gp.set_streaming_width(256);
+        gp.set_response_status(tlm::TLM_INCOMPLETE_RESPONSE);
+        auto ext = new scc::host_mem_map_extension(ref_data.data());
+        gp.set_extension(ext);
+        dut.isck->transport_dbg(gp);
+    }
+    sc_start(dut.clk.read());
+    {
+        tlm::tlm_generic_payload gp;
+        prepare_trans(gp, tlm::TLM_READ_COMMAND, 256, 0ULL);
+        sc_core::sc_time t;
+        dut.isck->b_transport(gp, t);
+        uint64_t res;
+        memcpy(&res, gp.get_data_ptr(), sizeof(uint64_t));
+        REQUIRE(res == 0xf8f9fafbfcfdfeffULL);
+        delete gp.get_data_ptr();
+    }
+    sc_start(dut.clk.read());
+    {
+        tlm::tlm_generic_payload gp;
+        prepare_trans(gp, tlm::TLM_READ_COMMAND, 384, 0ULL);
+        sc_core::sc_time t;
+        dut.isck->b_transport(gp, t);
+        uint64_t res;
+        memcpy(&res, gp.get_data_ptr(), sizeof(uint64_t));
+        REQUIRE(res == 0x78797a7b7c7d7e7fULL);
+        delete gp.get_data_ptr();
+    }
+    sc_start(dut.clk.read());
+    {
+        tlm::tlm_generic_payload gp;
+        gp.set_command(tlm::TLM_IGNORE_COMMAND);
+        gp.set_address(256);
+        gp.set_data_ptr(nullptr);
+        gp.set_data_length(256);
+        gp.set_streaming_width(256);
+        gp.set_response_status(tlm::TLM_INCOMPLETE_RESPONSE);
+        auto ext = new scc::host_mem_map_extension(nullptr);
+        gp.set_extension(ext);
+        dut.isck->transport_dbg(gp);
+    }
+    sc_start(dut.clk.read());
+    {
+        tlm::tlm_generic_payload gp;
+        prepare_trans(gp, tlm::TLM_READ_COMMAND, 256, 0ULL);
+        sc_core::sc_time t;
+        dut.isck->b_transport(gp, t);
+        uint64_t res;
+        memcpy(&res, gp.get_data_ptr(), sizeof(uint64_t));
+        REQUIRE(res == 123456789ULL);
+        delete gp.get_data_ptr();
+    }
+    sc_start(dut.clk.read());
+    {
+        tlm::tlm_generic_payload gp;
+        prepare_trans(gp, tlm::TLM_READ_COMMAND, 256, 0ULL);
+        sc_core::sc_time t;
+        dut.isck->b_transport(gp, t);
+        uint64_t res;
+        memcpy(&res, gp.get_data_ptr(), sizeof(uint64_t));
+        REQUIRE(res == 123456789ULL);
+        delete gp.get_data_ptr();
+    }
+    sc_start(dut.clk.read());
+}
+
+} // namespace scc