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#include "c11.h"
#include "cache.h"
#include "dram.h"
#include "storage.h"
#include <catch2/catch_test_macros.hpp>
#include <iostream>
/**
* One way associative, two level
* Assuming that each address is 14 bits (16384 word address space):
* LEVEL1: OFFSET=2, INDEX=5(32), TAG=7
* LEVEL2: OFFSET=2, INDEX=7(128), TAG=5
*/
class C21 : public C11
{
public:
C21() : C11()
{
this->c2 = new Cache(new Dram(this->m_delay), 7, this->c_delay);
this->c = new Cache(this->c2, 5, this->c_delay);
}
Cache *c2;
};
// TEST_CASE_METHOD(C21, "store 32th, 33rd element in DELAY cycles",
TEST_CASE_METHOD(C21, "store 32th, 96th element in DELAY cycles, evict to level 2", "[2level_cache]")
{
int r;
signed int w;
CHECK(expected == actual);
w = 0x11223344;
// delay + 1 due to internal logic, when mem
// finishes handle_miss still returns 'blocked'
this->wait_then_do(this->m_delay + (this->c_delay * 2) + 2, [this, w]() {
return this->c->write_word(this->mem, w, 0b10000000);
});
r = this->c->write_word(this->mem, w, 0b10000000);
CHECK(r);
// check level 2
// note this is write-back == no write
actual = this->c2->view(32, 1)[0];
REQUIRE(expected == actual);
// check level 1
expected.at(0) = w;
actual = this->c->view(0, 1)[0];
REQUIRE(expected == actual);
// wait = evict
this->wait_then_do(this->c_delay + 1, [this, w]() {
return this->c->write_word(this->mem, w, 0b110000000);
});
// check level 2
actual = this->c2->view(32, 1)[0];
REQUIRE(expected == actual);
// read in line
this->wait_then_do(this->m_delay + this->c_delay + 1, [this, w]() {
return this->c->write_word(this->mem, w, 0b110000000);
});
expected.at(0) = 0;
// perform write
this->wait_then_do(this->c_delay + 1, [this, w]() {
return this->c->write_word(this->mem, w, 0b110000000);
});
r = this->c->write_word(this->mem, w, 0b110000000);
CHECK(r);
// check level 2
actual = this->c2->view(96, 1)[0];
REQUIRE(expected == actual);
expected.at(0) = w;
actual = this->c2->view(32, 1)[0];
REQUIRE(expected == actual);
// check level 1
actual = this->c->view(0, 1)[0];
REQUIRE(expected == actual);
}
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