pcie_bifurcation: Fetch bifurcation at a PCIe slot with hardcoded values
This will read a json config and return the bifurcation based on that.
It will read the configure file in a persistent file to see if it is
valid machine config and return the bifurcation information
accordingly.
For example,
If it is valid config, it will return 8x8 for PE1,3,4,6.
Tested:
Unit tests passed.
Physical Tests.
PE0 -> no bifurcation
PE1 -> x8x8
```
$ ipmitool raw 0x2e 0x32 0x79 0x2b 0x00 0x0f 0
79 2b 00 0b 00
$ ipmitool raw 0x2e 0x32 0x79 0x2b 0x00 0x0f 1
79 2b 00 0b 02 08 08
```
Change-Id: I44aefbfb26372f8bc0069343c8a6d07d3cf6f42d
Signed-off-by: Willy Tu <wltu@google.com>
diff --git a/test/handler_unittest.cpp b/test/handler_unittest.cpp
index 418ba46..2edb977 100644
--- a/test/handler_unittest.cpp
+++ b/test/handler_unittest.cpp
@@ -18,7 +18,10 @@
#include <systemd/sd-bus.h>
+#include <charconv>
+#include <filesystem>
#include <fstream>
+#include <functional>
#include <nlohmann/json.hpp>
#include <sdbusplus/message.hpp>
#include <sdbusplus/test/sdbus_mock.hpp>
@@ -32,6 +35,9 @@
namespace ipmi
{
+using testing::_;
+using testing::Return;
+
TEST(HandlerTest, EthCheckValidHappy)
{
Handler h;
@@ -112,6 +118,7 @@
using ::testing::_;
using ::testing::AnyNumber;
+using ::testing::ContainerEq;
using ::testing::DoAll;
using ::testing::ElementsAre;
using ::testing::Eq;
@@ -586,6 +593,50 @@
IpmiException);
}
+TEST(HandlerTest, PcieBifurcation)
+{
+ const std::string& testJson = "/tmp/test-json";
+ auto j = R"(
+ {
+ "1": [ 1, 3 ],
+ "3": [ 3, 6 ],
+ "4": [ 3, 4, 1 ],
+ "6": [ 8 ]
+ }
+ )"_json;
+
+ std::ofstream bifurcationJson(testJson);
+ bifurcationJson << j.dump();
+ bifurcationJson.flush();
+ bifurcationJson.close();
+
+ BifurcationStatic bifurcationHelper(testJson);
+ Handler h(std::ref(bifurcationHelper));
+
+ std::unordered_map<uint8_t, std::vector<uint8_t>> expectedMapping = {
+ {1, {1, 3}}, {3, {3, 6}}, {4, {3, 4, 1}}, {6, {8}}};
+ std::vector<uint8_t> invalidBus = {0, 2, 5, 7};
+
+ for (const auto& [bus, output] : expectedMapping)
+ {
+ EXPECT_THAT(h.pcieBifurcation(bus), ContainerEq(output));
+ }
+
+ for (const auto& bus : invalidBus)
+ {
+ EXPECT_TRUE(h.pcieBifurcation(bus).empty());
+ }
+
+ std::filesystem::remove(testJson.data());
+ bifurcationHelper = BifurcationStatic(testJson);
+ Handler h2(std::ref(bifurcationHelper));
+ for (uint8_t i = 0; i < 8; ++i)
+ {
+ auto bifurcation = h2.pcieBifurcation(i);
+ EXPECT_TRUE(bifurcation.empty());
+ }
+}
+
// TODO: Add checks for other functions of handler.
} // namespace ipmi