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video_core/memory_manager: Add BytesToMapEnd

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Track map address sizes in a flat ordered map and add a method to query
the number of bytes until the end of a map in a given address.
This commit is contained in:
ReinUsesLisp 2021-01-22 18:31:08 -03:00
parent a175ba1089
commit bda177ef40
2 changed files with 27 additions and 2 deletions
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23
src/video_core/memory_manager.cpp
View file

@ -4,6 +4,7 @@
#include "common/alignment.h"
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/core.h"
#include "core/hle/kernel/memory/page_table.h"
#include "core/hle/kernel/process.h"
@ -38,6 +39,12 @@ GPUVAddr MemoryManager::UpdateRange(GPUVAddr gpu_addr, PageEntry page_entry, std
}
GPUVAddr MemoryManager::Map(VAddr cpu_addr, GPUVAddr gpu_addr, std::size_t size) {
const auto it = std::ranges::lower_bound(map_ranges, gpu_addr, {}, &MapRange::first);
if (it != map_ranges.end() && it->first == gpu_addr) {
it->second = size;
} else {
map_ranges.insert(it, MapRange{gpu_addr, size});
}
return UpdateRange(gpu_addr, cpu_addr, size);
}
@ -52,10 +59,16 @@ GPUVAddr MemoryManager::MapAllocate32(VAddr cpu_addr, std::size_t size) {
}
void MemoryManager::Unmap(GPUVAddr gpu_addr, std::size_t size) {
if (!size) {
if (size == 0) {
return;
}
const auto it = std::ranges::lower_bound(map_ranges, gpu_addr, {}, &MapRange::first);
if (it != map_ranges.end()) {
ASSERT(it->first == gpu_addr);
map_ranges.erase(it);
} 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);
@ -218,6 +231,12 @@ const u8* MemoryManager::GetPointer(GPUVAddr gpu_addr) const {
return system.Memory().GetPointer(*address);
}
size_t MemoryManager::BytesToMapEnd(GPUVAddr gpu_addr) const noexcept {
auto it = std::ranges::upper_bound(map_ranges, gpu_addr, {}, &MapRange::first);
--it;
return it->second - (gpu_addr - it->first);
}
void MemoryManager::ReadBlock(GPUVAddr gpu_src_addr, void* dest_buffer, std::size_t size) const {
std::size_t remaining_size{size};
std::size_t page_index{gpu_src_addr >> page_bits};

6
src/video_core/memory_manager.h
View file

@ -85,6 +85,9 @@ public:
[[nodiscard]] u8* GetPointer(GPUVAddr addr);
[[nodiscard]] const u8* GetPointer(GPUVAddr addr) const;
/// Returns the number of bytes until the end of the memory map containing the given GPU address
[[nodiscard]] size_t BytesToMapEnd(GPUVAddr gpu_addr) const noexcept;
/**
* ReadBlock and WriteBlock are full read and write operations over virtual
* GPU Memory. It's important to use these when GPU memory may not be continuous
@ -150,6 +153,9 @@ private:
VideoCore::RasterizerInterface* rasterizer = nullptr;
std::vector<PageEntry> page_table;
using MapRange = std::pair<GPUVAddr, size_t>;
std::vector<MapRange> map_ranges;
};
} // namespace Tegra