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graphics: add RDNA2 FLAT BDA buffer cache and faults

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This commit is contained in:
nmzik
2026-08-27 03:45:41 +02:00
parent 8072718462
commit e738535294
37 changed files with 1002 additions and 684 deletions
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src/graphics/host_gpu/renderer/cache/bufferCache.h
Vendored
+16 -3
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@@ -7,6 +7,7 @@
#include "common/slotVector.h"
#include "graphics/host_gpu/memoryTracker.h"
#include "graphics/host_gpu/rangeSet.h"
#include "graphics/host_gpu/renderer/cache/faultManager.h"
#include "graphics/host_gpu/renderer/cache/multiLevelPageTable.h"
#include "graphics/host_gpu/renderer/cache/streamBuffer.h"
@@ -26,7 +27,11 @@ inline constexpr BufferId NULL_BUFFER_ID {0};
class BufferCache {
public:
static constexpr uint64_t CACHING_PAGE_SIZE = 16ull * 1024ull;
static constexpr uint32_t CACHING_PAGEBITS = 14;
static constexpr uint64_t CACHING_PAGESIZE = uint64_t {1} << CACHING_PAGEBITS;
static constexpr uint64_t CACHING_NUMPAGES = uint64_t {1} << (40 - CACHING_PAGEBITS);
static constexpr uint64_t BDA_PAGETABLE_SIZE =
CACHING_NUMPAGES * sizeof(vk::DeviceAddress);
BufferCache(GraphicContext& graphics, CommandScheduler& scheduler, PageManager& page_manager,
TextureCache& texture_cache);
@@ -51,6 +56,8 @@ public:
EXIT("BufferCache: invalid utility-buffer usage\n");
}
[[nodiscard]] const Buffer* GetGdsBuffer() const noexcept { return &m_gds_buffer; }
[[nodiscard]] Buffer* GetBdaPageTableBuffer() noexcept { return &m_bda_pagetable_buffer; }
[[nodiscard]] Buffer* GetFaultBuffer() noexcept { return m_fault_manager.GetFaultBuffer(); }
[[nodiscard]] std::pair<Buffer*, uint64_t> ObtainBufferForImage(uint64_t vaddr, uint64_t size);
void FillBuffer(uint64_t vaddr, uint64_t size, uint32_t value, bool is_gds);
void CopyBuffer(uint64_t dst_vaddr, uint64_t src_vaddr, uint64_t size, bool dst_gds,
@@ -60,14 +67,16 @@ public:
[[nodiscard]] bool HasGpuDirtyBytes(uint64_t vaddr, uint64_t size);
[[nodiscard]] bool IsRegionCpuModified(uint64_t vaddr, uint64_t size);
[[nodiscard]] bool IsRegionGpuModified(uint64_t vaddr, uint64_t size);
void ProcessFaultBuffer();
void SynchronizeBuffersInRange(uint64_t vaddr, uint64_t size);
void RunGarbageCollector();
private:
friend struct BufferCacheTestAccess;
struct DownloadCopy;
using PageTable = MultiLevelPageTable<BufferId, 14, 40, 16>;
static_assert(CACHING_PAGE_SIZE == (uint64_t {1} << PageTable::kPageBits));
using PageTable = MultiLevelPageTable<BufferId, CACHING_PAGEBITS, 40, 16>;
static_assert(CACHING_PAGESIZE == (uint64_t {1} << PageTable::kPageBits));
static constexpr uint64_t DOWNLOAD_ALIGNMENT = 64;
[[nodiscard]] static constexpr uint64_t AlignDownload(uint64_t size) noexcept {
return (size + DOWNLOAD_ALIGNMENT - 1) & ~(DOWNLOAD_ALIGNMENT - 1);
@@ -78,6 +87,8 @@ private:
[[nodiscard]] BufferId CreateBuffer(uint64_t vaddr, uint64_t size);
void Register(BufferId id);
void Unregister(BufferId id);
template <bool insert>
void ChangeRegister(BufferId id);
void DeleteBuffer(BufferId id);
[[nodiscard]] bool SynchronizeBuffer(Buffer& buffer, uint64_t vaddr, uint64_t size,
bool is_written, bool is_texel_buffer);
@@ -90,7 +101,9 @@ private:
GraphicContext& m_graphics;
CommandScheduler& m_scheduler;
FaultManager m_fault_manager;
Buffer m_gds_buffer;
Buffer m_bda_pagetable_buffer;
Common::SlotVector<Buffer> m_slot_buffers;
Common::LeastRecentlyUsedCache<BufferId, uint64_t> m_lru_cache;
std::map<uint64_t, BufferId> m_buffers;