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Diffstat (limited to '')
-rw-r--r-- | src/video_core/engines/maxwell_dma.cpp | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/video_core/engines/maxwell_dma.cpp b/src/video_core/engines/maxwell_dma.cpp new file mode 100644 index 000000000..442138988 --- /dev/null +++ b/src/video_core/engines/maxwell_dma.cpp @@ -0,0 +1,69 @@ +// Copyright 2018 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "core/memory.h" +#include "video_core/engines/maxwell_dma.h" +#include "video_core/textures/decoders.h" + +namespace Tegra { +namespace Engines { + +MaxwellDMA::MaxwellDMA(MemoryManager& memory_manager) : memory_manager(memory_manager) {} + +void MaxwellDMA::WriteReg(u32 method, u32 value) { + ASSERT_MSG(method < Regs::NUM_REGS, + "Invalid MaxwellDMA register, increase the size of the Regs structure"); + + regs.reg_array[method] = value; + +#define MAXWELLDMA_REG_INDEX(field_name) \ + (offsetof(Tegra::Engines::MaxwellDMA::Regs, field_name) / sizeof(u32)) + + switch (method) { + case MAXWELLDMA_REG_INDEX(exec): { + HandleCopy(); + break; + } + } + +#undef MAXWELLDMA_REG_INDEX +} + +void MaxwellDMA::HandleCopy() { + NGLOG_WARNING(HW_GPU, "Requested a DMA copy"); + + const GPUVAddr source = regs.src_address.Address(); + const GPUVAddr dest = regs.dst_address.Address(); + + const VAddr source_cpu = *memory_manager.GpuToCpuAddress(source); + const VAddr dest_cpu = *memory_manager.GpuToCpuAddress(dest); + + // TODO(Subv): Perform more research and implement all features of this engine. + ASSERT(regs.exec.enable_swizzle == 0); + ASSERT(regs.exec.enable_2d == 1); + ASSERT(regs.exec.query_mode == Regs::QueryMode::None); + ASSERT(regs.exec.query_intr == Regs::QueryIntr::None); + ASSERT(regs.exec.copy_mode == Regs::CopyMode::Unk2); + ASSERT(regs.src_params.pos_x == 0); + ASSERT(regs.src_params.pos_y == 0); + ASSERT(regs.dst_params.pos_x == 0); + ASSERT(regs.dst_params.pos_y == 0); + ASSERT(regs.exec.is_dst_linear != regs.exec.is_src_linear); + + u8* src_buffer = Memory::GetPointer(source_cpu); + u8* dst_buffer = Memory::GetPointer(dest_cpu); + + if (regs.exec.is_dst_linear && !regs.exec.is_src_linear) { + // If the input is tiled and the output is linear, deswizzle the input and copy it over. + Texture::CopySwizzledData(regs.src_params.size_x, regs.src_params.size_y, 1, 1, src_buffer, + dst_buffer, true, regs.src_params.BlockHeight()); + } else { + // If the input is linear and the output is tiled, swizzle the input and copy it over. + Texture::CopySwizzledData(regs.dst_params.size_x, regs.dst_params.size_y, 1, 1, dst_buffer, + src_buffer, false, regs.dst_params.BlockHeight()); + } +} + +} // namespace Engines +} // namespace Tegra |