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-rw-r--r--tests/dram.cc336
1 files changed, 335 insertions, 1 deletions
diff --git a/tests/dram.cc b/tests/dram.cc
index 7b19ac4..8425d3b 100644
--- a/tests/dram.cc
+++ b/tests/dram.cc
@@ -186,7 +186,187 @@ TEST_CASE(
delete d;
}
-TEST_CASE("Construct singleton dram, write a line to an address", "[dram]")
+TEST_CASE(
+ "Construct singleton dram, store line in zero cycles", "[dram]")
+{
+ Dram *d = new Dram(1, 0);
+ std::array<signed int, LINE_SIZE> expected = {0, 0, 0, 0};
+ std::array<signed int, LINE_SIZE> actual = d->view(0, 1)[0];
+ CHECK(expected == actual);
+
+ signed int w = 0x11223344;
+ expected = {w, w+1, w+2, w+3};
+
+ Response r = d->write_line(MEM, expected, 0x00000000);
+ CHECK(r == OK);
+
+ actual = d->view(0, 1)[0];
+ REQUIRE(expected == actual);
+
+ delete d;
+}
+
+TEST_CASE(
+ "Construct singleton dram, store line in three cycles", "[dram]")
+{
+ int delay = 3;
+ Dram *d = new Dram(1, delay);
+ std::array<signed int, LINE_SIZE> expected = {0, 0, 0, 0};
+ std::array<signed int, LINE_SIZE> actual = d->view(0, 1)[0];
+ CHECK(expected == actual);
+
+ signed int w = 0x11223344;
+ std::array<signed int, LINE_SIZE> written_line = {w, w+1, w+2, w+3};
+
+ int i;
+ Response r;
+ for (i = 0; i < delay; ++i) {
+ r = d->write_line(MEM, written_line, 0x00000000);
+ CHECK(r == WAIT);
+
+ actual = d->view(0, 1)[0];
+ REQUIRE(expected == actual);
+ d->resolve();
+ }
+
+ r = d->write_line(MEM, written_line, 0x00000000);
+ CHECK(r == OK);
+ d->resolve();
+
+ expected = written_line;
+ actual = d->view(0, 1)[0];
+ REQUIRE(expected == actual);
+
+ delete d;
+}
+
+TEST_CASE(
+ "Construct singleton dram, store line in three cycles no "
+ "conflict",
+ "[dram]")
+{
+ int delay = 3;
+ Dram *d = new Dram(1, delay);
+ std::array<signed int, LINE_SIZE> expected = {0, 0, 0, 0};
+ std::array<signed int, LINE_SIZE> actual = d->view(0, 1)[0];
+ CHECK(expected == actual);
+
+ signed int w = 0x11223344;
+ std::array<signed int, LINE_SIZE> written_line = {w, w+1, w+2, w+3};
+
+ int i;
+ Response r;
+ for (i = 0; i < delay; ++i) {
+ r = d->write_line(MEM, written_line, 0x00000000);
+ CHECK(r == WAIT);
+
+ actual = d->view(0, 1)[0];
+ REQUIRE(expected == actual);
+ d->resolve();
+ }
+
+ r = d->write_line(MEM, written_line, 0x00000000);
+ REQUIRE(r == OK);
+ // clock cycle did NOT resolve yet!
+ // this fetch should not make progress
+ r = d->write_line(FETCH, written_line, 0x00000001);
+ CHECK(r == WAIT);
+
+ actual = d->view(0, 1)[0];
+ CHECK(r == WAIT);
+ d->resolve();
+
+ expected = written_line;
+ actual = d->view(0, 1)[0];
+ REQUIRE(expected == actual);
+
+ written_line = {w+4, w+5, w+6, w+7};
+
+ for (i = 0; i < delay; ++i) {
+ r = d->write_line(FETCH, written_line, 0x00000001);
+ CHECK(r == WAIT);
+
+ actual = d->view(0, 1)[0];
+ REQUIRE(expected == actual);
+ d->resolve();
+ }
+
+ r = d->write_line(FETCH, written_line, 0x00000001);
+ actual = d->view(0, 1)[0];
+ CHECK(r == OK);
+
+ expected = written_line;
+ actual = d->view(0, 1)[0];
+ REQUIRE(expected == actual);
+
+ delete d;
+}
+
+TEST_CASE(
+ "Construct singleton dram, store line in three cycles much "
+ "conflict",
+ "[dram]")
+{
+ int delay = 2;
+ Dram *d = new Dram(1, 2);
+ std::array<signed int, LINE_SIZE> expected = {0, 0, 0, 0};
+ std::array<signed int, LINE_SIZE> actual = d->view(0, 1)[0];
+ CHECK(expected == actual);
+
+ signed int w = 0x11223344;
+ std::array<signed int, LINE_SIZE> written_line = {w, w+1, w+2, w+3};
+
+ int i;
+ Response r;
+ for (i = 0; i < delay; ++i) {
+ r = d->write_line(MEM, written_line, 0x00000000);
+ CHECK(r == WAIT);
+
+ r = d->write_line(FETCH, written_line, 0x00000001);
+ CHECK(r == WAIT);
+
+ actual = d->view(0, 1)[0];
+ REQUIRE(expected == actual);
+ d->resolve();
+ }
+
+ r = d->write_line(MEM, written_line, 0x00000000);
+ CHECK(r == OK);
+ r = d->write_line(FETCH, written_line, 0x00000001);
+ CHECK(r == WAIT);
+ d->resolve();
+
+ actual = d->view(0, 1)[0];
+ expected = written_line;
+ REQUIRE(expected == actual);
+
+ written_line = {w+4, w+5, w+6, w+7};
+ for (i = 0; i < delay; ++i) {
+ r = d->write_line(FETCH, written_line, 0x00000001);
+ CHECK(r == WAIT);
+
+ r = d->write_line(MEM, written_line, 0x00000003);
+ CHECK(r == WAIT);
+
+ actual = d->view(0, 1)[0];
+ REQUIRE(expected == actual);
+ d->resolve();
+ }
+
+ r = d->write_line(FETCH, written_line, 0x00000001);
+ actual = d->view(0, 1)[0];
+ CHECK(r == OK);
+ r = d->write_line(MEM, written_line, 0x00000003);
+ CHECK(r == WAIT);
+
+ expected = written_line;
+ actual = d->view(0, 1)[0];
+ REQUIRE(expected == actual);
+
+ delete d;
+}
+
+TEST_CASE("Construct singleton dram, write a line to an address in 0 cycles, read in 0 cycles", "[dram]")
{
Dram *d = new Dram(1, 0);
std::array<signed int, LINE_SIZE> expected = {0, 0, 0, 0};
@@ -217,6 +397,160 @@ TEST_CASE("Construct singleton dram, write a line to an address", "[dram]")
delete d;
}
+TEST_CASE("Construct singleton dram, write a line to an address in three cycles, read it in three cycles", "[dram]")
+{
+ int delay = 3;
+ Dram *d = new Dram(1, delay);
+ std::array<signed int, LINE_SIZE> expected = {0, 0, 0, 0};
+ std::array<signed int, LINE_SIZE> actual = d->view(0, 1)[0];
+ CHECK(expected == actual);
+
+ signed int w = 0x11223311;
+ expected = {w, w+1, w+2, w+3};
+ int addr = 0x00000000;
+
+ int i;
+ Response r;
+
+ for(i=0; i<delay; ++i) {
+ r = d->write_line(MEM, expected, addr);
+ d->resolve();
+ }
+ r = d->write_line(MEM, expected, addr);
+ d->resolve();
+
+ for (i = 0; i < delay; ++i) {
+ r = d->read(MEM, 0x00000000, actual);
+ CHECK(r == WAIT);
+ REQUIRE(expected != actual);
+ d->resolve();
+ }
+
+ r = d->read(MEM, 0x00000000, actual);
+ CHECK(r == OK);
+ d->resolve();
+ REQUIRE(expected == actual);
+ delete d;
+}
+
+TEST_CASE(
+ "Construct singleton dram, store line in 3 cycles, read line in 3 cycles with no conflict","[dram]")
+{
+ int delay = 3;
+ Dram *d = new Dram(1, delay);
+ std::array<signed int, LINE_SIZE> expected = {0, 0, 0, 0};
+ std::array<signed int, LINE_SIZE> actual = d->view(0, 1)[0];
+ CHECK(expected == actual);
+
+ signed int w = 0x11223311;
+ expected = {w, w+1, w+2, w+3};
+ int addr = 0x00000000;
+
+ int i;
+ Response r;
+ for(int j=0; j<delay; ++j) {
+ r = d->write_line(MEM, expected, addr);
+ d->resolve();
+ }
+ r = d->write_line(MEM, expected, addr++);
+ d->resolve();
+
+ for (i = 0; i < delay; ++i) {
+ r = d->read(MEM, 0x00000000, actual);
+ CHECK(r == WAIT);
+ REQUIRE(expected != actual);
+ d->resolve();
+ }
+
+ r = d->read(MEM, 0x00000000, actual);
+ REQUIRE(r == OK);
+ r = d->read(FETCH, 0x00000003, actual);
+ CHECK(r == WAIT);
+ d->resolve();
+ REQUIRE(expected == actual);
+
+ actual = {0,0,0,0};
+ for (i = 0; i < delay; ++i) {
+ r = d->read(FETCH, 0x00000000, actual);
+ CHECK(r == WAIT);
+ REQUIRE(expected != actual);
+ d->resolve();
+ }
+
+ r = d->read(FETCH, 0x00000000, actual);
+ REQUIRE(r == OK);
+ r = d->read(MEM, 0x00000002, actual);
+ CHECK(r == WAIT);
+ d->resolve();
+ REQUIRE(expected == actual);
+
+ delete d;
+
+}
+
+TEST_CASE(
+ "Construct singleton dram, store line in 3 cycles, read line in 3 cycles with much conflict","[dram]")
+{
+ int delay = 3;
+ Dram *d = new Dram(1, delay);
+ std::array<signed int, LINE_SIZE> expected = {0, 0, 0, 0};
+ std::array<signed int, LINE_SIZE> actual = d->view(0, 1)[0];
+ CHECK(expected == actual);
+
+ signed int w = 0x11223311;
+ expected = {w, w+1, w+2, w+3};
+ int addr = 0x00000000;
+
+ int i;
+ Response r;
+ for(int j=0; j<delay; ++j) {
+ r = d->write_line(MEM, expected, addr);
+ d->resolve();
+ }
+ r = d->write_line(MEM, expected, addr++);
+ d->resolve();
+
+
+ for (i = 0; i < delay; ++i) {
+ r = d->read(MEM, 0x00000000, actual);
+ CHECK(r == WAIT);
+ REQUIRE(expected != actual);
+ r = d->read(FETCH, 0x00000002, actual);
+ CHECK(r == WAIT);
+ REQUIRE(expected != actual);
+ d->resolve();
+ }
+
+ r = d->read(MEM, 0x00000000, actual);
+ REQUIRE(r == OK);
+ r = d->read(FETCH, 0x00000003, actual);
+ CHECK(r == WAIT);
+ d->resolve();
+ REQUIRE(expected == actual);
+
+ actual = {0,0,0,0};
+ for (i = 0; i < delay; ++i) {
+ r = d->read(FETCH, 0x00000000, actual);
+ CHECK(r == WAIT);
+ REQUIRE(expected != actual);
+ r = d->read(MEM, 0x00000002, actual);
+ CHECK(r == WAIT);
+ REQUIRE(expected != actual);
+ d->resolve();
+ }
+
+ r = d->read(FETCH, 0x00000000, actual);
+ REQUIRE(r == OK);
+ r = d->read(MEM, 0x00000002, actual);
+ CHECK(r == WAIT);
+ d->resolve();
+ REQUIRE(expected == actual);
+
+ delete d;
+
+}
+
+
TEST_CASE("Construct singleton dram, write a line to an address one element at a time, read it in zero cycles", "[dram]")
{
Dram *d = new Dram(1, 0);
generated by cgit v1.2.3 (git 2.39.1) at 2025-05-13 00:21:38 +0000