| // Copyright 2019 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 <lib/ddk/debug.h> |
| #include <lib/ddk/driver.h> |
| #include <lib/driver-unit-test/utils.h> |
| |
| #include <zxtest/zxtest.h> |
| |
| #include "x86.h" |
| |
| namespace x86 { |
| |
| TEST(IommuTest, BasicTest) { |
| // Initialize enough ACPI to allow us to construct an IommuManager |
| std::unique_ptr<X86> dev; |
| ASSERT_OK(X86::Create(nullptr, driver_unit_test::GetParent(), &dev)); |
| ASSERT_OK(dev->EarlyAcpiInit()); |
| // Create and destroy an IommuManager. Pass a flag to force use of the hardware iommu to ensure |
| // kernel iommu objects are actually created (and then destroyed). |
| IommuManager manager([](fx_log_severity_t severity, const char* file, int line, const char* msg, |
| va_list args) { zxlogvf_etc(severity, nullptr, file, line, msg, args); }); |
| zx_status_t status = manager.Init({} /* root_resource */, true /* use_hardware_iommu */); |
| // It could be that this system has no hardware iommus and so we tolerate ZX_ERR_NOT_FOUND. |
| EXPECT_TRUE(status == ZX_OK || status == ZX_ERR_NOT_FOUND); |
| // Let the IommuManager get destroyed and free the kernel resources, turning back off any iommus. |
| } |
| |
| } // namespace x86 |
