garnet/lib/magma/tests/unit_tests/test_platform_device.cc

// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <thread>

#include "helper/platform_device_helper.h"
#include "platform_device.h"
#include "platform_thread.h"
#include "gtest/gtest.h"

TEST(PlatformDevice, Basic)
{
    magma::PlatformDevice* platform_device = TestPlatformDevice::GetInstance();
    ASSERT_TRUE(platform_device);

    auto platform_mmio =
        platform_device->CpuMapMmio(0, magma::PlatformMmio::CACHE_POLICY_UNCACHED_DEVICE);
    EXPECT_TRUE(platform_mmio.get());
}

TEST(PlatformDevice, MapMmio)
{
    magma::PlatformDevice* platform_device = TestPlatformDevice::GetInstance();
    ASSERT_TRUE(platform_device);

    uint32_t index = 0;

    // Map once
    auto mmio = platform_device->CpuMapMmio(index, magma::PlatformMmio::CACHE_POLICY_CACHED);
    ASSERT_TRUE(mmio);
    EXPECT_NE(0u, mmio->physical_address());

    // Map again same policy
    auto mmio2 = platform_device->CpuMapMmio(index, magma::PlatformMmio::CACHE_POLICY_CACHED);
    EXPECT_TRUE(mmio2);

    // Map again different policy - this is now permitted though it's a bad idea.
    auto mmio3 = platform_device->CpuMapMmio(index, magma::PlatformMmio::CACHE_POLICY_UNCACHED);
    EXPECT_TRUE(mmio3);
}

TEST(PlatformDevice, SchedulerProfile)
{
    magma::PlatformDevice* platform_device = TestPlatformDevice::GetInstance();
    ASSERT_TRUE(platform_device);

    auto profile = platform_device->GetSchedulerProfile(magma::PlatformDevice::kPriorityHigher,
                                                        "msd/test-profile");
    ASSERT_TRUE(profile);

    std::thread test_thread(
        [&profile]() { EXPECT_TRUE(magma::PlatformThreadHelper::SetProfile(profile.get())); });

    test_thread.join();
}