graphics: add RDNA2 FLAT BDA buffer cache and faults

src/graphics/host_gpu/renderer/cache/faultManager.h

@@ -0,0 +1,46 @@
+#ifndef EMULATOR_SRC_GRAPHICS_HOST_GPU_RENDERER_CACHE_FAULTMANAGER_H_
+#define EMULATOR_SRC_GRAPHICS_HOST_GPU_RENDERER_CACHE_FAULTMANAGER_H_
+
+#include "common/abi.h"
+#include "graphics/host_gpu/rangeSet.h"
+#include "graphics/host_gpu/renderer/cache/streamBuffer.h"
+
+#include <array>
+#include <cstdint>
+
+namespace Libs::Graphics {
+
+class BufferCache;
+
+class FaultManager {
+	static constexpr size_t MaxPendingFaults = 8;
+
+public:
+	FaultManager(GraphicContext& graphics, CommandScheduler& scheduler, BufferCache& buffer_cache,
+	             uint32_t caching_pagebits, uint64_t caching_num_pages);
+	~FaultManager();
+	KYTY_CLASS_NO_COPY(FaultManager);
+
+	[[nodiscard]] Buffer* GetFaultBuffer() noexcept { return &m_fault_buffer; }
+	void                  ProcessFaultBuffer();
+
+private:
+	GraphicContext&                            m_graphics;
+	CommandScheduler&                          m_scheduler;
+	BufferCache&                               m_buffer_cache;
+	RangeSet                                   m_fault_ranges;
+	uint64_t                                   m_caching_pagesize;
+	uint64_t                                   m_caching_num_pages;
+	uint64_t                                   m_fault_buffer_size;
+	Buffer                                     m_fault_buffer;
+	Buffer                                     m_download_buffer;
+	std::array<uint64_t, MaxPendingFaults>      m_fault_areas {};
+	uint32_t                                   m_current_area = 0;
+	vk::DescriptorSetLayout                    m_fault_process_desc_layout = nullptr;
+	vk::Pipeline                               m_fault_process_pipeline = nullptr;
+	vk::PipelineLayout                         m_fault_process_pipeline_layout = nullptr;
+};
+
+} // namespace Libs::Graphics
+
+#endif // EMULATOR_SRC_GRAPHICS_HOST_GPU_RENDERER_CACHE_FAULTMANAGER_H_