1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
// SPDX-FileCopyrightText: 2022 yuzu Emulator Project
// SPDX-FileCopyrightText: 2022 Skyline Team and Contributors
// SPDX-License-Identifier: GPL-3.0-or-later
#include <atomic>
#include <deque>
#include <mutex>
#include "core/hle/kernel/k_process.h"
#include "core/hle/service/nvdrv/core/container.h"
#include "core/hle/service/nvdrv/core/heap_mapper.h"
#include "core/hle/service/nvdrv/core/nvmap.h"
#include "core/hle/service/nvdrv/core/syncpoint_manager.h"
#include "core/memory.h"
#include "video_core/host1x/host1x.h"
namespace Service::Nvidia::NvCore {
Session::Session(SessionId id_, Kernel::KProcess* process_, Core::Asid asid_)
: id{id_}, process{process_}, asid{asid_}, has_preallocated_area{}, mapper{}, is_active{} {}
Session::~Session() = default;
struct ContainerImpl {
explicit ContainerImpl(Container& core, Tegra::Host1x::Host1x& host1x_)
: host1x{host1x_}, file{core, host1x_}, manager{host1x_}, device_file_data{} {}
Tegra::Host1x::Host1x& host1x;
NvMap file;
SyncpointManager manager;
Container::Host1xDeviceFileData device_file_data;
std::deque<Session> sessions;
size_t new_ids{};
std::deque<size_t> id_pool;
std::mutex session_guard;
};
Container::Container(Tegra::Host1x::Host1x& host1x_) {
impl = std::make_unique<ContainerImpl>(*this, host1x_);
}
Container::~Container() = default;
SessionId Container::OpenSession(Kernel::KProcess* process) {
using namespace Common::Literals;
std::scoped_lock lk(impl->session_guard);
for (auto& session : impl->sessions) {
if (!session.is_active) {
continue;
}
if (session.process == process) {
return session.id;
}
}
size_t new_id{};
auto* memory_interface = &process->GetMemory();
auto& smmu = impl->host1x.MemoryManager();
auto asid = smmu.RegisterProcess(memory_interface);
if (!impl->id_pool.empty()) {
new_id = impl->id_pool.front();
impl->id_pool.pop_front();
impl->sessions[new_id] = Session{SessionId{new_id}, process, asid};
} else {
new_id = impl->new_ids++;
impl->sessions.emplace_back(SessionId{new_id}, process, asid);
}
auto& session = impl->sessions[new_id];
session.is_active = true;
// Optimization
if (process->IsApplication()) {
auto& page_table = process->GetPageTable().GetBasePageTable();
auto heap_start = page_table.GetHeapRegionStart();
Kernel::KProcessAddress cur_addr = heap_start;
size_t region_size = 0;
VAddr region_start = 0;
while (true) {
Kernel::KMemoryInfo mem_info{};
Kernel::Svc::PageInfo page_info{};
R_ASSERT(page_table.QueryInfo(std::addressof(mem_info), std::addressof(page_info),
cur_addr));
auto svc_mem_info = mem_info.GetSvcMemoryInfo();
// Check if this memory block is heap.
if (svc_mem_info.state == Kernel::Svc::MemoryState::Normal) {
if (svc_mem_info.size > region_size) {
region_size = svc_mem_info.size;
region_start = svc_mem_info.base_address;
}
}
// Check if we're done.
const uintptr_t next_address = svc_mem_info.base_address + svc_mem_info.size;
if (next_address <= GetInteger(cur_addr)) {
break;
}
cur_addr = next_address;
}
session.has_preallocated_area = false;
auto start_region = region_size >= 32_MiB ? smmu.Allocate(region_size) : 0;
if (start_region != 0) {
session.mapper = std::make_unique<HeapMapper>(region_start, start_region, region_size,
asid, impl->host1x);
smmu.TrackContinuity(start_region, region_start, region_size, asid);
session.has_preallocated_area = true;
LOG_DEBUG(Debug, "Preallocation created!");
}
}
return SessionId{new_id};
}
void Container::CloseSession(SessionId session_id) {
std::scoped_lock lk(impl->session_guard);
auto& session = impl->sessions[session_id.id];
auto& smmu = impl->host1x.MemoryManager();
if (session.has_preallocated_area) {
const DAddr region_start = session.mapper->GetRegionStart();
const size_t region_size = session.mapper->GetRegionSize();
session.mapper.reset();
smmu.Free(region_start, region_size);
session.has_preallocated_area = false;
}
session.is_active = false;
smmu.UnregisterProcess(impl->sessions[session_id.id].asid);
impl->id_pool.emplace_front(session_id.id);
}
Session* Container::GetSession(SessionId session_id) {
std::atomic_thread_fence(std::memory_order_acquire);
return &impl->sessions[session_id.id];
}
NvMap& Container::GetNvMapFile() {
return impl->file;
}
const NvMap& Container::GetNvMapFile() const {
return impl->file;
}
Container::Host1xDeviceFileData& Container::Host1xDeviceFile() {
return impl->device_file_data;
}
const Container::Host1xDeviceFileData& Container::Host1xDeviceFile() const {
return impl->device_file_data;
}
SyncpointManager& Container::GetSyncpointManager() {
return impl->manager;
}
const SyncpointManager& Container::GetSyncpointManager() const {
return impl->manager;
}
} // namespace Service::Nvidia::NvCore
|
