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SMMU: Implement physical memory mirroring

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Fernando Sahmkow 2023-12-29 07:53:52 +01:00 • committed by Liam
parent 0a2536a0df
commit 34a8d0cc8e
8 changed files with 226 additions and 40 deletions
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53
src/core/memory.cpp
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@ -44,7 +44,8 @@ bool AddressSpaceContains(const Common::PageTable& table, const Common::ProcessA
// from outside classes. This also allows modification to the internals of the memory
// subsystem without needing to rebuild all files that make use of the memory interface.
struct Memory::Impl {
explicit Impl(Core::System& system_) : system{system_} {}
explicit Impl(Core::System& system_)
: system{system_} {}
void SetCurrentPageTable(Kernel::KProcess& process) {
current_page_table = &process.GetPageTable().GetImpl();
@ -817,26 +818,31 @@ struct Memory::Impl {
void HandleRasterizerDownload(VAddr v_address, size_t size) {
const auto* p = GetPointerImpl(
v_address, []() {}, []() {});
auto& gpu_device_memory = system.Host1x().MemoryManager();
DAddr address =
gpu_device_memory.GetAddressFromPAddr(system.DeviceMemory().GetRawPhysicalAddr(p));
if (!gpu_device_memory) [[unlikely]] {
gpu_device_memory = &system.Host1x().MemoryManager();
}
const size_t core = system.GetCurrentHostThreadID();
auto& current_area = rasterizer_read_areas[core];
const DAddr end_address = address + size;
if (current_area.start_address <= address && end_address <= current_area.end_address)
[[likely]] {
return;
}
current_area = system.GPU().OnCPURead(address, size);
gpu_device_memory->ApplyOpOnPointer(
p, scratch_buffers[core], [&](DAddr address) {
const DAddr end_address = address + size;
if (current_area.start_address <= address && end_address <= current_area.end_address)
[[likely]] {
return;
}
current_area = system.GPU().OnCPURead(address, size);
});
}
void HandleRasterizerWrite(VAddr v_address, size_t size) {
const auto* p = GetPointerImpl(
v_address, []() {}, []() {});
PAddr address = system.DeviceMemory().GetRawPhysicalAddr(p);
constexpr size_t sys_core = Core::Hardware::NUM_CPU_CORES - 1;
const size_t core = std::min(system.GetCurrentHostThreadID(),
sys_core); // any other calls threads go to syscore.
if (!gpu_device_memory) [[unlikely]] {
gpu_device_memory = &system.Host1x().MemoryManager();
}
// Guard on sys_core;
if (core == sys_core) [[unlikely]] {
sys_core_guard.lock();
@ -846,17 +852,20 @@ struct Memory::Impl {
sys_core_guard.unlock();
}
});
auto& current_area = rasterizer_write_areas[core];
PAddr subaddress = address >> YUZU_PAGEBITS;
bool do_collection = current_area.last_address == subaddress;
if (!do_collection) [[unlikely]] {
do_collection = system.GPU().OnCPUWrite(address, size);
if (!do_collection) {
return;
gpu_device_memory->ApplyOpOnPointer(
p, scratch_buffers[core], [&](DAddr address) {
auto& current_area = rasterizer_write_areas[core];
PAddr subaddress = address >> YUZU_PAGEBITS;
bool do_collection = current_area.last_address == subaddress;
if (!do_collection) [[unlikely]] {
do_collection = system.GPU().OnCPUWrite(address, size);
if (!do_collection) {
return;
}
current_area.last_address = subaddress;
}
current_area.last_address = subaddress;
}
gpu_dirty_managers[core].Collect(address, size);
gpu_dirty_managers[core].Collect(address, size);
});
}
struct GPUDirtyState {
@ -872,10 +881,12 @@ struct Memory::Impl {
}
Core::System& system;
Tegra::MaxwellDeviceMemoryManager* gpu_device_memory{};
Common::PageTable* current_page_table = nullptr;
std::array<VideoCore::RasterizerDownloadArea, Core::Hardware::NUM_CPU_CORES>
rasterizer_read_areas{};
std::array<GPUDirtyState, Core::Hardware::NUM_CPU_CORES> rasterizer_write_areas{};
std::array<Common::ScratchBuffer<u32>, Core::Hardware::NUM_CPU_CORES> scratch_buffers{};
std::span<Core::GPUDirtyMemoryManager> gpu_dirty_managers;
std::mutex sys_core_guard;