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Diffstat (limited to 'src/core/hle/service/nvnflinger/fb_share_buffer_manager.cpp')
| -rw-r--r-- | src/core/hle/service/nvnflinger/fb_share_buffer_manager.cpp | 351 |
1 files changed, 351 insertions, 0 deletions
diff --git a/src/core/hle/service/nvnflinger/fb_share_buffer_manager.cpp b/src/core/hle/service/nvnflinger/fb_share_buffer_manager.cpp new file mode 100644 index 000000000..469a53244 --- /dev/null +++ b/src/core/hle/service/nvnflinger/fb_share_buffer_manager.cpp @@ -0,0 +1,351 @@ +// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#include <random> + +#include "core/core.h" +#include "core/hle/kernel/k_process.h" +#include "core/hle/kernel/k_system_resource.h" +#include "core/hle/service/nvdrv/devices/nvmap.h" +#include "core/hle/service/nvdrv/nvdrv.h" +#include "core/hle/service/nvnflinger/buffer_queue_producer.h" +#include "core/hle/service/nvnflinger/fb_share_buffer_manager.h" +#include "core/hle/service/nvnflinger/pixel_format.h" +#include "core/hle/service/nvnflinger/ui/graphic_buffer.h" +#include "core/hle/service/vi/layer/vi_layer.h" +#include "core/hle/service/vi/vi_results.h" + +namespace Service::Nvnflinger { + +namespace { + +Result AllocateIoForProcessAddressSpace(Common::ProcessAddress* out_map_address, + std::unique_ptr<Kernel::KPageGroup>* out_page_group, + Core::System& system, u32 size) { + using Core::Memory::YUZU_PAGESIZE; + + // Allocate memory for the system shared buffer. + // FIXME: Because the gmmu can only point to cpu addresses, we need + // to map this in the application space to allow it to be used. + // FIXME: Add proper smmu emulation. + // FIXME: This memory belongs to vi's .data section. + auto& kernel = system.Kernel(); + auto* process = system.ApplicationProcess(); + auto& page_table = process->GetPageTable(); + + // Hold a temporary page group reference while we try to map it. + auto pg = std::make_unique<Kernel::KPageGroup>( + kernel, std::addressof(kernel.GetSystemSystemResource().GetBlockInfoManager())); + + // Allocate memory from secure pool. + R_TRY(kernel.MemoryManager().AllocateAndOpen( + pg.get(), size / YUZU_PAGESIZE, + Kernel::KMemoryManager::EncodeOption(Kernel::KMemoryManager::Pool::Secure, + Kernel::KMemoryManager::Direction::FromBack))); + + // Get bounds of where mapping is possible. + const VAddr alias_code_begin = GetInteger(page_table.GetAliasCodeRegionStart()); + const VAddr alias_code_size = page_table.GetAliasCodeRegionSize() / YUZU_PAGESIZE; + const auto state = Kernel::KMemoryState::Io; + const auto perm = Kernel::KMemoryPermission::UserReadWrite; + std::mt19937_64 rng{process->GetRandomEntropy(0)}; + + // Retry up to 64 times to map into alias code range. + Result res = ResultSuccess; + int i; + for (i = 0; i < 64; i++) { + *out_map_address = alias_code_begin + ((rng() % alias_code_size) * YUZU_PAGESIZE); + res = page_table.MapPageGroup(*out_map_address, *pg, state, perm); + if (R_SUCCEEDED(res)) { + break; + } + } + + // Return failure, if necessary + R_UNLESS(i < 64, res); + + // Return the mapped page group. + *out_page_group = std::move(pg); + + // We succeeded. + R_SUCCEED(); +} + +template <typename T> +std::span<u8> SerializeIoc(T& params) { + return std::span(reinterpret_cast<u8*>(std::addressof(params)), sizeof(T)); +} + +Result CreateNvMapHandle(u32* out_nv_map_handle, Nvidia::Devices::nvmap& nvmap, u32 size) { + // Create a handle. + Nvidia::Devices::nvmap::IocCreateParams create_in_params{ + .size = size, + .handle = 0, + }; + Nvidia::Devices::nvmap::IocCreateParams create_out_params{}; + R_UNLESS(nvmap.IocCreate(SerializeIoc(create_in_params), SerializeIoc(create_out_params)) == + Nvidia::NvResult::Success, + VI::ResultOperationFailed); + + // Assign the output handle. + *out_nv_map_handle = create_out_params.handle; + + // We succeeded. + R_SUCCEED(); +} + +Result FreeNvMapHandle(Nvidia::Devices::nvmap& nvmap, u32 handle) { + // Free the handle. + Nvidia::Devices::nvmap::IocFreeParams free_in_params{ + .handle = handle, + }; + Nvidia::Devices::nvmap::IocFreeParams free_out_params{}; + R_UNLESS(nvmap.IocFree(SerializeIoc(free_in_params), SerializeIoc(free_out_params)) == + Nvidia::NvResult::Success, + VI::ResultOperationFailed); + + // We succeeded. + R_SUCCEED(); +} + +Result AllocNvMapHandle(Nvidia::Devices::nvmap& nvmap, u32 handle, Common::ProcessAddress buffer, + u32 size) { + // Assign the allocated memory to the handle. + Nvidia::Devices::nvmap::IocAllocParams alloc_in_params{ + .handle = handle, + .heap_mask = 0, + .flags = {}, + .align = 0, + .kind = 0, + .address = GetInteger(buffer), + }; + Nvidia::Devices::nvmap::IocAllocParams alloc_out_params{}; + R_UNLESS(nvmap.IocAlloc(SerializeIoc(alloc_in_params), SerializeIoc(alloc_out_params)) == + Nvidia::NvResult::Success, + VI::ResultOperationFailed); + + // We succeeded. + R_SUCCEED(); +} + +Result AllocateHandleForBuffer(u32* out_handle, Nvidia::Module& nvdrv, + Common::ProcessAddress buffer, u32 size) { + // Get the nvmap device. + auto nvmap_fd = nvdrv.Open("/dev/nvmap"); + auto nvmap = nvdrv.GetDevice<Nvidia::Devices::nvmap>(nvmap_fd); + ASSERT(nvmap != nullptr); + + // Create a handle. + R_TRY(CreateNvMapHandle(out_handle, *nvmap, size)); + + // Ensure we maintain a clean state on failure. + ON_RESULT_FAILURE { + ASSERT(R_SUCCEEDED(FreeNvMapHandle(*nvmap, *out_handle))); + }; + + // Assign the allocated memory to the handle. + R_RETURN(AllocNvMapHandle(*nvmap, *out_handle, buffer, size)); +} + +constexpr auto SharedBufferBlockLinearFormat = android::PixelFormat::Rgba8888; +constexpr u32 SharedBufferBlockLinearBpp = 4; + +constexpr u32 SharedBufferBlockLinearWidth = 1280; +constexpr u32 SharedBufferBlockLinearHeight = 768; +constexpr u32 SharedBufferBlockLinearStride = + SharedBufferBlockLinearWidth * SharedBufferBlockLinearBpp; +constexpr u32 SharedBufferNumSlots = 7; + +constexpr u32 SharedBufferWidth = 1280; +constexpr u32 SharedBufferHeight = 720; +constexpr u32 SharedBufferAsync = false; + +constexpr u32 SharedBufferSlotSize = + SharedBufferBlockLinearWidth * SharedBufferBlockLinearHeight * SharedBufferBlockLinearBpp; +constexpr u32 SharedBufferSize = SharedBufferSlotSize * SharedBufferNumSlots; + +constexpr SharedMemoryPoolLayout SharedBufferPoolLayout = [] { + SharedMemoryPoolLayout layout{}; + layout.num_slots = SharedBufferNumSlots; + + for (u32 i = 0; i < SharedBufferNumSlots; i++) { + layout.slots[i].buffer_offset = i * SharedBufferSlotSize; + layout.slots[i].size = SharedBufferSlotSize; + layout.slots[i].width = SharedBufferWidth; + layout.slots[i].height = SharedBufferHeight; + } + + return layout; +}(); + +void MakeGraphicBuffer(android::BufferQueueProducer& producer, u32 slot, u32 handle) { + auto buffer = std::make_shared<android::GraphicBuffer>(); + buffer->width = SharedBufferWidth; + buffer->height = SharedBufferHeight; + buffer->stride = SharedBufferBlockLinearStride; + buffer->format = SharedBufferBlockLinearFormat; + buffer->buffer_id = handle; + buffer->offset = slot * SharedBufferSlotSize; + ASSERT(producer.SetPreallocatedBuffer(slot, buffer) == android::Status::NoError); +} + +} // namespace + +FbShareBufferManager::FbShareBufferManager(Core::System& system, Nvnflinger& flinger, + std::shared_ptr<Nvidia::Module> nvdrv) + : m_system(system), m_flinger(flinger), m_nvdrv(std::move(nvdrv)) {} + +FbShareBufferManager::~FbShareBufferManager() = default; + +Result FbShareBufferManager::Initialize(u64* out_buffer_id, u64* out_layer_id, u64 display_id) { + std::scoped_lock lk{m_guard}; + + // Ensure we have not already created a buffer. + R_UNLESS(m_buffer_id == 0, VI::ResultOperationFailed); + + // Allocate memory and space for the shared buffer. + Common::ProcessAddress map_address; + R_TRY(AllocateIoForProcessAddressSpace(std::addressof(map_address), + std::addressof(m_buffer_page_group), m_system, + SharedBufferSize)); + + // Create an nvmap handle for the buffer and assign the memory to it. + R_TRY(AllocateHandleForBuffer(std::addressof(m_buffer_nvmap_handle), *m_nvdrv, map_address, + SharedBufferSize)); + + // Record the display id. + m_display_id = display_id; + + // Create a layer for the display. + m_layer_id = m_flinger.CreateLayer(m_display_id).value(); + + // Set up the buffer. + m_buffer_id = m_next_buffer_id++; + + // Get the layer. + VI::Layer* layer = m_flinger.FindLayer(m_display_id, m_layer_id); + ASSERT(layer != nullptr); + + // Get the producer and set preallocated buffers. + auto& producer = layer->GetBufferQueue(); + MakeGraphicBuffer(producer, 0, m_buffer_nvmap_handle); + MakeGraphicBuffer(producer, 1, m_buffer_nvmap_handle); + + // Assign outputs. + *out_buffer_id = m_buffer_id; + *out_layer_id = m_layer_id; + + // We succeeded. + R_SUCCEED(); +} + +Result FbShareBufferManager::GetSharedBufferMemoryHandleId(u64* out_buffer_size, + s32* out_nvmap_handle, + SharedMemoryPoolLayout* out_pool_layout, + u64 buffer_id, + u64 applet_resource_user_id) { + std::scoped_lock lk{m_guard}; + + R_UNLESS(m_buffer_id > 0, VI::ResultNotFound); + R_UNLESS(buffer_id == m_buffer_id, VI::ResultNotFound); + + *out_pool_layout = SharedBufferPoolLayout; + *out_buffer_size = SharedBufferSize; + *out_nvmap_handle = m_buffer_nvmap_handle; + + R_SUCCEED(); +} + +Result FbShareBufferManager::GetLayerFromId(VI::Layer** out_layer, u64 layer_id) { + // Ensure the layer id is valid. + R_UNLESS(m_layer_id > 0 && layer_id == m_layer_id, VI::ResultNotFound); + + // Get the layer. + VI::Layer* layer = m_flinger.FindLayer(m_display_id, layer_id); + R_UNLESS(layer != nullptr, VI::ResultNotFound); + + // We succeeded. + *out_layer = layer; + R_SUCCEED(); +} + +Result FbShareBufferManager::AcquireSharedFrameBuffer(android::Fence* out_fence, + std::array<s32, 4>& out_slot_indexes, + s64* out_target_slot, u64 layer_id) { + std::scoped_lock lk{m_guard}; + + // Get the layer. + VI::Layer* layer; + R_TRY(this->GetLayerFromId(std::addressof(layer), layer_id)); + + // Get the producer. + auto& producer = layer->GetBufferQueue(); + + // Get the next buffer from the producer. + s32 slot; + R_UNLESS(producer.DequeueBuffer(std::addressof(slot), out_fence, SharedBufferAsync != 0, + SharedBufferWidth, SharedBufferHeight, + SharedBufferBlockLinearFormat, 0) == android::Status::NoError, + VI::ResultOperationFailed); + + // Assign remaining outputs. + *out_target_slot = slot; + out_slot_indexes = {0, 1, -1, -1}; + + // We succeeded. + R_SUCCEED(); +} + +Result FbShareBufferManager::PresentSharedFrameBuffer(android::Fence fence, + Common::Rectangle<s32> crop_region, + u32 transform, s32 swap_interval, + u64 layer_id, s64 slot) { + std::scoped_lock lk{m_guard}; + + // Get the layer. + VI::Layer* layer; + R_TRY(this->GetLayerFromId(std::addressof(layer), layer_id)); + + // Get the producer. + auto& producer = layer->GetBufferQueue(); + + // Request to queue the buffer. + std::shared_ptr<android::GraphicBuffer> buffer; + R_UNLESS(producer.RequestBuffer(static_cast<s32>(slot), std::addressof(buffer)) == + android::Status::NoError, + VI::ResultOperationFailed); + + // Queue the buffer to the producer. + android::QueueBufferInput input{}; + android::QueueBufferOutput output{}; + input.crop = crop_region; + input.fence = fence; + input.transform = static_cast<android::NativeWindowTransform>(transform); + input.swap_interval = swap_interval; + R_UNLESS(producer.QueueBuffer(static_cast<s32>(slot), input, std::addressof(output)) == + android::Status::NoError, + VI::ResultOperationFailed); + + // We succeeded. + R_SUCCEED(); +} + +Result FbShareBufferManager::GetSharedFrameBufferAcquirableEvent(Kernel::KReadableEvent** out_event, + u64 layer_id) { + std::scoped_lock lk{m_guard}; + + // Get the layer. + VI::Layer* layer; + R_TRY(this->GetLayerFromId(std::addressof(layer), layer_id)); + + // Get the producer. + auto& producer = layer->GetBufferQueue(); + + // Set the event. + *out_event = std::addressof(producer.GetNativeHandle()); + + // We succeeded. + R_SUCCEED(); +} + +} // namespace Service::Nvnflinger |