1 // Copyright 2016 The Android Open Source Project
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "host-common/address_space_host_memory_allocator.h"
16 #include <gtest/gtest.h>
17
18 namespace android {
19 namespace emulation {
20
21 namespace {
22 constexpr uint64_t BAD_GPA = 0x1234000;
23 constexpr uint64_t GOOD_GPA_1 = 0x10001000;
24 constexpr uint64_t GOOD_GPA_2 = 0x20002000;
25
empty_add_memory_mapping(uint64_t gpa,void * ptr,uint64_t size)26 int empty_add_memory_mapping(uint64_t gpa, void *ptr, uint64_t size) {
27 return (gpa == BAD_GPA) ? 0 : 1;
28 }
29
empty_remove_memory_mapping(uint64_t gpa,void * ptr,uint64_t size)30 int empty_remove_memory_mapping(uint64_t gpa, void *ptr, uint64_t size) { return 1; }
31
getGuestPageSize()32 uint32_t getGuestPageSize() {
33 return 4096;
34 }
35
create_address_space_device_control_ops()36 struct address_space_device_control_ops create_address_space_device_control_ops() {
37 struct address_space_device_control_ops ops = {};
38
39 ops.add_memory_mapping = &empty_add_memory_mapping;
40 ops.remove_memory_mapping = &empty_remove_memory_mapping;
41
42 return ops;
43 }
44
create_address_space_device_hw_funcs()45 AddressSpaceHwFuncs create_address_space_device_hw_funcs() {
46 AddressSpaceHwFuncs hw_funcs = {};
47
48 hw_funcs.getGuestPageSize = &getGuestPageSize;
49
50 return hw_funcs;
51 }
52
createAllocateRequest(uint64_t phys_addr)53 AddressSpaceDevicePingInfo createAllocateRequest(uint64_t phys_addr) {
54 AddressSpaceDevicePingInfo req = {};
55
56 req.metadata = static_cast<uint64_t>(
57 AddressSpaceHostMemoryAllocatorContext::HostMemoryAllocatorCommand::Allocate);
58 req.phys_addr = phys_addr;
59 req.size = 1;
60
61 return req;
62 }
63
createUnallocateRequest(uint64_t phys_addr)64 AddressSpaceDevicePingInfo createUnallocateRequest(uint64_t phys_addr) {
65 AddressSpaceDevicePingInfo req = {};
66
67 req.metadata = static_cast<uint64_t>(
68 AddressSpaceHostMemoryAllocatorContext::HostMemoryAllocatorCommand::Unallocate);
69 req.phys_addr = phys_addr;
70
71 return req;
72 }
73 } // namespace
74
TEST(AddressSpaceHostMemoryAllocatorContext,getDeviceType)75 TEST(AddressSpaceHostMemoryAllocatorContext, getDeviceType) {
76 struct address_space_device_control_ops ops =
77 create_address_space_device_control_ops();
78
79 AddressSpaceHwFuncs hw_funcs = create_address_space_device_hw_funcs();
80
81 AddressSpaceHostMemoryAllocatorContext ctx(&ops, &hw_funcs);
82
83 EXPECT_EQ(ctx.getDeviceType(), AddressSpaceDeviceType::HostMemoryAllocator);
84 }
85
TEST(AddressSpaceHostMemoryAllocatorContext,AllocateDeallocate)86 TEST(AddressSpaceHostMemoryAllocatorContext, AllocateDeallocate) {
87 struct address_space_device_control_ops ops =
88 create_address_space_device_control_ops();
89
90 AddressSpaceHwFuncs hw_funcs = create_address_space_device_hw_funcs();
91
92 AddressSpaceHostMemoryAllocatorContext ctx(&ops, &hw_funcs);
93
94 AddressSpaceDevicePingInfo req;
95
96 req = createAllocateRequest(GOOD_GPA_1);
97 ctx.perform(&req);
98 EXPECT_EQ(req.metadata, 0);
99
100 req = createUnallocateRequest(GOOD_GPA_1);
101 ctx.perform(&req);
102 EXPECT_EQ(req.metadata, 0);
103 }
104
TEST(AddressSpaceHostMemoryAllocatorContext,AllocateSamePhysAddr)105 TEST(AddressSpaceHostMemoryAllocatorContext, AllocateSamePhysAddr) {
106 struct address_space_device_control_ops ops =
107 create_address_space_device_control_ops();
108
109 AddressSpaceHwFuncs hw_funcs = create_address_space_device_hw_funcs();
110
111 AddressSpaceHostMemoryAllocatorContext ctx(&ops, &hw_funcs);
112
113 AddressSpaceDevicePingInfo req;
114
115 req = createAllocateRequest(GOOD_GPA_1);
116 ctx.perform(&req);
117 EXPECT_EQ(req.metadata, 0);
118
119 req = createAllocateRequest(GOOD_GPA_1);
120 ctx.perform(&req);
121 EXPECT_NE(req.metadata, 0);
122
123 req = createAllocateRequest(GOOD_GPA_2);
124 ctx.perform(&req);
125 EXPECT_EQ(req.metadata, 0);
126
127 req = createUnallocateRequest(GOOD_GPA_2);
128 ctx.perform(&req);
129 EXPECT_EQ(req.metadata, 0);
130
131 req = createUnallocateRequest(GOOD_GPA_1);
132 ctx.perform(&req);
133 EXPECT_EQ(req.metadata, 0);
134
135 req = createAllocateRequest(GOOD_GPA_1);
136 ctx.perform(&req);
137 EXPECT_EQ(req.metadata, 0);
138
139 req = createUnallocateRequest(GOOD_GPA_1);
140 ctx.perform(&req);
141 EXPECT_EQ(req.metadata, 0);
142 }
143
TEST(AddressSpaceHostMemoryAllocatorContext,AllocateMappingFail)144 TEST(AddressSpaceHostMemoryAllocatorContext, AllocateMappingFail) {
145 struct address_space_device_control_ops ops =
146 create_address_space_device_control_ops();
147
148 AddressSpaceHwFuncs hw_funcs = create_address_space_device_hw_funcs();
149
150 AddressSpaceHostMemoryAllocatorContext ctx(&ops, &hw_funcs);
151
152 AddressSpaceDevicePingInfo req;
153
154 req = createAllocateRequest(BAD_GPA);
155 ctx.perform(&req);
156 EXPECT_NE(req.metadata, 0);
157 }
158
TEST(AddressSpaceHostMemoryAllocatorContext,UnallocateTwice)159 TEST(AddressSpaceHostMemoryAllocatorContext, UnallocateTwice) {
160 struct address_space_device_control_ops ops =
161 create_address_space_device_control_ops();
162
163 AddressSpaceHwFuncs hw_funcs = create_address_space_device_hw_funcs();
164
165 AddressSpaceHostMemoryAllocatorContext ctx(&ops, &hw_funcs);
166
167 AddressSpaceDevicePingInfo req;
168
169 req = createAllocateRequest(GOOD_GPA_1);
170 ctx.perform(&req);
171 EXPECT_EQ(req.metadata, 0);
172
173 req = createUnallocateRequest(GOOD_GPA_1);
174 ctx.perform(&req);
175 EXPECT_EQ(req.metadata, 0);
176
177 req = createUnallocateRequest(GOOD_GPA_1);
178 ctx.perform(&req);
179 EXPECT_NE(req.metadata, 0);
180 }
181
182 } // namespace emulation
183 } // namespace android
184