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VideoCore: Update MemoryManager

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This commit is contained in:
Fernando Sahmkow
2021-11-11 21:24:40 +01:00
parent b617874724
commit cbaf3fb433
4 changed files with 86 additions and 167 deletions
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98
src/video_core/memory_manager.h
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@ -8,6 +8,7 @@
#include <vector>
#include "common/common_types.h"
#include "common/multi_level_page_table.h"
namespace VideoCore {
class RasterizerInterface;
@ -19,55 +20,10 @@ class System;
namespace Tegra {
class PageEntry final {
public:
enum class State : u32 {
Unmapped = static_cast<u32>(-1),
Allocated = static_cast<u32>(-2),
};
constexpr PageEntry() = default;
constexpr PageEntry(State state_) : state{state_} {}
constexpr PageEntry(VAddr addr) : state{static_cast<State>(addr >> ShiftBits)} {}
[[nodiscard]] constexpr bool IsUnmapped() const {
return state == State::Unmapped;
}
[[nodiscard]] constexpr bool IsAllocated() const {
return state == State::Allocated;
}
[[nodiscard]] constexpr bool IsValid() const {
return !IsUnmapped() && !IsAllocated();
}
[[nodiscard]] constexpr VAddr ToAddress() const {
if (!IsValid()) {
return {};
}
return static_cast<VAddr>(state) << ShiftBits;
}
[[nodiscard]] constexpr PageEntry operator+(u64 offset) const {
// If this is a reserved value, offsets do not apply
if (!IsValid()) {
return *this;
}
return PageEntry{(static_cast<VAddr>(state) << ShiftBits) + offset};
}
private:
static constexpr std::size_t ShiftBits{12};
State state{State::Unmapped};
};
static_assert(sizeof(PageEntry) == 4, "PageEntry is too large");
class MemoryManager final {
public:
explicit MemoryManager(Core::System& system_);
explicit MemoryManager(Core::System& system_, u64 address_space_bits_ = 40,
u64 page_bits_ = 16);
~MemoryManager();
/// Binds a renderer to the memory manager.
@ -86,9 +42,6 @@ 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
@ -145,44 +98,47 @@ public:
void FlushRegion(GPUVAddr gpu_addr, size_t size) const;
private:
[[nodiscard]] PageEntry GetPageEntry(GPUVAddr gpu_addr) const;
void SetPageEntry(GPUVAddr gpu_addr, PageEntry page_entry, std::size_t size = page_size);
GPUVAddr UpdateRange(GPUVAddr gpu_addr, PageEntry page_entry, std::size_t size);
[[nodiscard]] std::optional<GPUVAddr> FindFreeRange(std::size_t size, std::size_t align,
bool start_32bit_address = false) const;
void TryLockPage(PageEntry page_entry, std::size_t size);
void TryUnlockPage(PageEntry page_entry, std::size_t size);
void ReadBlockImpl(GPUVAddr gpu_src_addr, void* dest_buffer, std::size_t size,
bool is_safe) const;
void WriteBlockImpl(GPUVAddr gpu_dest_addr, const void* src_buffer, std::size_t size,
bool is_safe);
[[nodiscard]] static constexpr std::size_t PageEntryIndex(GPUVAddr gpu_addr) {
[[nodiscard]] inline std::size_t PageEntryIndex(GPUVAddr gpu_addr) const {
return (gpu_addr >> page_bits) & page_table_mask;
}
static constexpr u64 address_space_size = 1ULL << 40;
static constexpr u64 address_space_start = 1ULL << 32;
static constexpr u64 address_space_start_low = 1ULL << 16;
static constexpr u64 page_bits{16};
static constexpr u64 page_size{1 << page_bits};
static constexpr u64 page_mask{page_size - 1};
static constexpr u64 page_table_bits{24};
static constexpr u64 page_table_size{1 << page_table_bits};
static constexpr u64 page_table_mask{page_table_size - 1};
Core::System& system;
const u64 address_space_bits;
const u64 page_bits;
u64 address_space_size;
u64 allocate_start;
u64 page_size;
u64 page_mask;
u64 page_table_mask;
static constexpr u64 cpu_page_bits{12};
VideoCore::RasterizerInterface* rasterizer = nullptr;
std::vector<PageEntry> page_table;
enum class EntryType : u64 {
Free = 0,
Reserved = 1,
Mapped = 2,
};
using MapRange = std::pair<GPUVAddr, size_t>;
std::vector<MapRange> map_ranges;
std::vector<u64> entries;
std::vector<std::pair<VAddr, std::size_t>> cache_invalidate_queue;
template <EntryType entry_type>
GPUVAddr PageTableOp(GPUVAddr gpu_addr, [[maybe_unused]] VAddr cpu_addr, size_t size);
EntryType GetEntry(size_t position) const;
void SetEntry(size_t position, EntryType entry);
Common::MultiLevelPageTable<u32> page_table;
};
} // namespace Tegra