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authorFernando Sahmkow <fsahmkow27@gmail.com>2021-06-13 03:34:06 +0200
committerFernando Sahmkow <fsahmkow27@gmail.com>2021-07-04 22:32:35 +0200
commitfd98fcf7f00d096322ccfaa1e35a314b4d698efd (patch)
tree90fe2a180845d1c28ad3996264188f6ae4aa9f11 /src/video_core/memory_manager.cpp
parentTexture Cache: Initial Implementation of Sparse Textures. (diff)
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Diffstat (limited to 'src/video_core/memory_manager.cpp')
-rw-r--r--src/video_core/memory_manager.cpp105
1 files changed, 100 insertions, 5 deletions
diff --git a/src/video_core/memory_manager.cpp b/src/video_core/memory_manager.cpp
index 3589c72ea..e66af4443 100644
--- a/src/video_core/memory_manager.cpp
+++ b/src/video_core/memory_manager.cpp
@@ -69,11 +69,17 @@ void MemoryManager::Unmap(GPUVAddr gpu_addr, std::size_t size) {
} else {
UNREACHABLE_MSG("Unmapping non-existent GPU address=0x{:x}", gpu_addr);
}
- // Flush and invalidate through the GPU interface, to be asynchronous if possible.
- const std::optional<VAddr> cpu_addr = GpuToCpuAddress(gpu_addr);
- ASSERT(cpu_addr);
- rasterizer->UnmapMemory(*cpu_addr, size);
+ const auto submapped_ranges = GetSubmappedRange(gpu_addr, size);
+
+ for (const auto& map : submapped_ranges) {
+ // Flush and invalidate through the GPU interface, to be asynchronous if possible.
+ const std::optional<VAddr> cpu_addr = GpuToCpuAddress(map.first);
+ ASSERT(cpu_addr);
+
+ rasterizer->UnmapMemory(*cpu_addr, map.second);
+ }
+
UpdateRange(gpu_addr, PageEntry::State::Unmapped, size);
}
@@ -128,7 +134,8 @@ void MemoryManager::SetPageEntry(GPUVAddr gpu_addr, PageEntry page_entry, std::s
//// Lock the new page
// TryLockPage(page_entry, size);
auto& current_page = page_table[PageEntryIndex(gpu_addr)];
- if (current_page.IsValid() != page_entry.IsValid() ||
+
+ if ((!current_page.IsValid() && page_entry.IsValid()) ||
current_page.ToAddress() != page_entry.ToAddress()) {
rasterizer->ModifyGPUMemory(gpu_addr, size);
}
@@ -179,6 +186,19 @@ std::optional<VAddr> MemoryManager::GpuToCpuAddress(GPUVAddr gpu_addr) const {
return page_entry.ToAddress() + (gpu_addr & page_mask);
}
+std::optional<VAddr> MemoryManager::GpuToCpuAddress(GPUVAddr addr, std::size_t size) const {
+ size_t page_index{addr >> page_bits};
+ const size_t page_last{(addr + size + page_size - 1) >> page_bits};
+ while (page_index < page_last) {
+ const auto page_addr{GpuToCpuAddress(page_index << page_bits)};
+ if (page_addr && *page_addr != 0) {
+ return page_addr;
+ }
+ ++page_index;
+ }
+ return std::nullopt;
+}
+
template <typename T>
T MemoryManager::Read(GPUVAddr addr) const {
if (auto page_pointer{GetPointer(addr)}; page_pointer) {
@@ -375,4 +395,79 @@ bool MemoryManager::IsGranularRange(GPUVAddr gpu_addr, std::size_t size) const {
return page <= Core::Memory::PAGE_SIZE;
}
+bool MemoryManager::IsContinousRange(GPUVAddr gpu_addr, std::size_t size) const {
+ size_t page_index{gpu_addr >> page_bits};
+ const size_t page_last{(gpu_addr + size + page_size - 1) >> page_bits};
+ std::optional<VAddr> old_page_addr{};
+ while (page_index != page_last) {
+ const auto page_addr{GpuToCpuAddress(page_index << page_bits)};
+ if (!page_addr || *page_addr == 0) {
+ return false;
+ }
+ if (old_page_addr) {
+ if (*old_page_addr + page_size != *page_addr) {
+ return false;
+ }
+ }
+ old_page_addr = page_addr;
+ ++page_index;
+ }
+ return true;
+}
+
+bool MemoryManager::IsFullyMappedRange(GPUVAddr gpu_addr, std::size_t size) const {
+ size_t page_index{gpu_addr >> page_bits};
+ const size_t page_last{(gpu_addr + size + page_size - 1) >> page_bits};
+ while (page_index < page_last) {
+ if (!page_table[page_index].IsValid() || page_table[page_index].ToAddress() == 0) {
+ return false;
+ }
+ ++page_index;
+ }
+ return true;
+}
+
+std::vector<std::pair<GPUVAddr, std::size_t>> MemoryManager::GetSubmappedRange(
+ GPUVAddr gpu_addr, std::size_t size) const {
+ std::vector<std::pair<GPUVAddr, std::size_t>> result{};
+ size_t page_index{gpu_addr >> page_bits};
+ size_t remaining_size{size};
+ size_t page_offset{gpu_addr & page_mask};
+ std::optional<std::pair<GPUVAddr, std::size_t>> last_segment{};
+ std::optional<VAddr> old_page_addr{};
+ const auto extend_size = [this, &last_segment, &page_index](std::size_t bytes) {
+ if (!last_segment) {
+ GPUVAddr new_base_addr = page_index << page_bits;
+ last_segment = {new_base_addr, bytes};
+ } else {
+ last_segment->second += bytes;
+ }
+ };
+ const auto split = [this, &last_segment, &result] {
+ if (last_segment) {
+ result.push_back(*last_segment);
+ last_segment = std::nullopt;
+ }
+ };
+ while (remaining_size > 0) {
+ const size_t num_bytes{std::min(page_size - page_offset, remaining_size)};
+ const auto page_addr{GpuToCpuAddress(page_index << page_bits)};
+ if (!page_addr) {
+ split();
+ } else if (old_page_addr) {
+ if (*old_page_addr + page_size != *page_addr) {
+ split();
+ }
+ extend_size(num_bytes);
+ } else {
+ extend_size(num_bytes);
+ }
+ ++page_index;
+ page_offset = 0;
+ remaining_size -= num_bytes;
+ }
+ split();
+ return result;
+}
+
} // namespace Tegra