1 /*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "host/libs/vm_manager/vm_manager.h"
18
19 #include <iomanip>
20 #include <memory>
21 #include <string>
22 #include <unordered_map>
23 #include <unordered_set>
24 #include <vector>
25
26 #include <android-base/logging.h>
27 #include <fruit/fruit.h>
28
29 #include "common/libs/utils/result.h"
30 #include "host/libs/config/command_source.h"
31 #include "host/libs/config/cuttlefish_config.h"
32 #include "host/libs/vm_manager/crosvm_manager.h"
33 #include "host/libs/vm_manager/gem5_manager.h"
34 #include "host/libs/vm_manager/qemu_manager.h"
35
36 namespace cuttlefish {
37 namespace vm_manager {
38
GetVmManager(const std::string & name,Arch arch)39 std::unique_ptr<VmManager> GetVmManager(const std::string& name, Arch arch) {
40 std::unique_ptr<VmManager> vmm;
41 if (name == QemuManager::name()) {
42 vmm.reset(new QemuManager(arch));
43 } else if (name == Gem5Manager::name()) {
44 vmm.reset(new Gem5Manager(arch));
45 } else if (name == CrosvmManager::name()) {
46 vmm.reset(new CrosvmManager());
47 }
48 if (!vmm) {
49 LOG(ERROR) << "Invalid VM manager: " << name;
50 return {};
51 }
52 if (!vmm->IsSupported()) {
53 LOG(ERROR) << "VM manager " << name << " is not supported on this machine.";
54 return {};
55 }
56 return vmm;
57 }
58
59 Result<std::unordered_map<std::string, std::string>>
ConfigureMultipleBootDevices(const std::string & pci_path,int pci_offset,int num_disks)60 ConfigureMultipleBootDevices(const std::string& pci_path, int pci_offset,
61 int num_disks) {
62 int num_boot_devices =
63 (num_disks < VmManager::kDefaultNumBootDevices) ? num_disks : VmManager::kDefaultNumBootDevices;
64 std::string boot_devices_prop_val = "";
65 for (int i = 0; i < num_boot_devices; i++) {
66 std::stringstream stream;
67 stream << std::setfill('0') << std::setw(2) << std::hex
68 << pci_offset + i + VmManager::kDefaultNumHvcs + VmManager::kMaxDisks - num_disks;
69 boot_devices_prop_val += pci_path + stream.str() + ".0,";
70 }
71 boot_devices_prop_val.pop_back();
72 return {{{"androidboot.boot_devices", boot_devices_prop_val}}};
73 }
74
75 class VmmCommands : public CommandSource {
76 public:
INJECT(VmmCommands (const CuttlefishConfig & config,VmManager & vmm))77 INJECT(VmmCommands(const CuttlefishConfig& config, VmManager& vmm))
78 : config_(config), vmm_(vmm) {}
79
80 // CommandSource
Commands()81 Result<std::vector<MonitorCommand>> Commands() override {
82 return vmm_.StartCommands(config_);
83 }
84
85 // SetupFeature
Name() const86 std::string Name() const override { return "VirtualMachineManager"; }
Enabled() const87 bool Enabled() const override { return true; }
88
89 private:
Dependencies() const90 std::unordered_set<SetupFeature*> Dependencies() const override { return {}; }
Setup()91 bool Setup() override { return true; }
92
93 const CuttlefishConfig& config_;
94 VmManager& vmm_;
95 };
96
97 fruit::Component<fruit::Required<const CuttlefishConfig,
98 const CuttlefishConfig::InstanceSpecific>,
99 VmManager>
VmManagerComponent()100 VmManagerComponent() {
101 return fruit::createComponent()
102 .registerProvider([](const CuttlefishConfig& config,
103 const CuttlefishConfig::InstanceSpecific& instance) {
104 auto vmm = GetVmManager(config.vm_manager(), instance.target_arch());
105 CHECK(vmm) << "Invalid VMM/Arch: \"" << config.vm_manager() << "\""
106 << (int)instance.target_arch() << "\"";
107 return vmm.release(); // fruit takes ownership of raw pointers
108 })
109 .addMultibinding<CommandSource, VmmCommands>()
110 .addMultibinding<SetupFeature, VmmCommands>();
111 }
112
113 } // namespace vm_manager
114 } // namespace cuttlefish
115