diff options
Diffstat (limited to 'src/core/hle/service/nvdrv/memory_manager.cpp')
-rw-r--r-- | src/core/hle/service/nvdrv/memory_manager.cpp | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/src/core/hle/service/nvdrv/memory_manager.cpp b/src/core/hle/service/nvdrv/memory_manager.cpp deleted file mode 100644 index 55a8675d5..000000000 --- a/src/core/hle/service/nvdrv/memory_manager.cpp +++ /dev/null @@ -1,112 +0,0 @@ -// Copyright 2018 yuzu emulator team -// Licensed under GPLv2 or any later version -// Refer to the license.txt file included. - -#include "common/assert.h" -#include "core/hle/service/nvdrv/memory_manager.h" - -namespace Service { -namespace Nvidia { - -PAddr MemoryManager::AllocateSpace(u64 size, u64 align) { - boost::optional<PAddr> paddr = FindFreeBlock(size, align); - ASSERT(paddr); - - for (u64 offset = 0; offset < size; offset += Memory::PAGE_SIZE) { - PageSlot(*paddr + offset) = static_cast<u64>(PageStatus::Allocated); - } - - return *paddr; -} - -PAddr MemoryManager::AllocateSpace(PAddr paddr, u64 size, u64 align) { - for (u64 offset = 0; offset < size; offset += Memory::PAGE_SIZE) { - if (IsPageMapped(paddr + offset)) { - return AllocateSpace(size, align); - } - } - - for (u64 offset = 0; offset < size; offset += Memory::PAGE_SIZE) { - PageSlot(paddr + offset) = static_cast<u64>(PageStatus::Allocated); - } - - return paddr; -} - -PAddr MemoryManager::MapBufferEx(VAddr vaddr, u64 size) { - vaddr &= ~Memory::PAGE_MASK; - - boost::optional<PAddr> paddr = FindFreeBlock(size); - ASSERT(paddr); - - for (u64 offset = 0; offset < size; offset += Memory::PAGE_SIZE) { - PageSlot(*paddr + offset) = vaddr + offset; - } - - return *paddr; -} - -PAddr MemoryManager::MapBufferEx(VAddr vaddr, PAddr paddr, u64 size) { - vaddr &= ~Memory::PAGE_MASK; - paddr &= ~Memory::PAGE_MASK; - - for (u64 offset = 0; offset < size; offset += Memory::PAGE_SIZE) { - if (PageSlot(paddr + offset) != static_cast<u64>(PageStatus::Allocated)) { - return MapBufferEx(vaddr, size); - } - } - - for (u64 offset = 0; offset < size; offset += Memory::PAGE_SIZE) { - PageSlot(paddr + offset) = vaddr + offset; - } - - return paddr; -} - -boost::optional<PAddr> MemoryManager::FindFreeBlock(u64 size, u64 align) { - PAddr paddr{}; - u64 free_space{}; - align = (align + Memory::PAGE_MASK) & ~Memory::PAGE_MASK; - - while (paddr + free_space < MAX_ADDRESS) { - if (!IsPageMapped(paddr + free_space)) { - free_space += Memory::PAGE_SIZE; - if (free_space >= size) { - return paddr; - } - } else { - paddr += free_space + Memory::PAGE_SIZE; - free_space = 0; - const u64 remainder{paddr % align}; - if (!remainder) { - paddr = (paddr - remainder) + align; - } - } - } - - return {}; -} - -VAddr MemoryManager::PhysicalToVirtualAddress(PAddr paddr) { - VAddr base_addr = PageSlot(paddr); - ASSERT(base_addr != static_cast<u64>(PageStatus::Unmapped)); - return base_addr + (paddr & Memory::PAGE_MASK); -} - -bool MemoryManager::IsPageMapped(PAddr paddr) { - return PageSlot(paddr) != static_cast<u64>(PageStatus::Unmapped); -} - -VAddr& MemoryManager::PageSlot(PAddr paddr) { - auto& block = page_table[(paddr >> (Memory::PAGE_BITS + PAGE_TABLE_BITS)) & PAGE_TABLE_MASK]; - if (!block) { - block = std::make_unique<PageBlock>(); - for (unsigned index = 0; index < PAGE_BLOCK_SIZE; index++) { - (*block)[index] = static_cast<u64>(PageStatus::Unmapped); - } - } - return (*block)[(paddr >> Memory::PAGE_BITS) & PAGE_BLOCK_MASK]; -} - -} // namespace Nvidia -} // namespace Service |