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// 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 {
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;
size_t Container::OpenSession(Kernel::KProcess* process) {
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 smmu_id = 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{new_id, process, smmu_id};
} else {
impl->sessions.emplace_back(new_id, process, smmu_id);
new_id = impl->new_ids++;
}
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 >> 15) >= 1024 ? smmu.Allocate(region_size) : 0;
if (start_region != 0) {
session.mapper = std::make_unique<HeapMapper>(region_start, start_region, region_size,
smmu_id, impl->host1x);
smmu.TrackContinuity(start_region, region_start, region_size, smmu_id);
session.has_preallocated_area = true;
LOG_CRITICAL(Debug, "Preallocation created!");
}
}
return new_id;
}
void Container::CloseSession(size_t id) {
std::scoped_lock lk(impl->session_guard);
auto& session = impl->sessions[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[id].smmu_id);
impl->id_pool.emplace_front(id);
}
Session* Container::GetSession(size_t id) {
std::atomic_thread_fence(std::memory_order_acquire);
return &impl->sessions[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
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