mirror of
https://github.com/Ryujinx/Ryujinx.git
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![Alex Barney](/assets/img/avatar_default.png)
* Fix typos * Remove unneeded using statements * Enforce var style more * Remove redundant qualifiers * Fix some indentation * Disable naming warnings on files with external enum names * Fix build * Mass find & replace for comments with no spacing * Standardize todo capitalization and for/if spacing
399 lines
10 KiB
C#
399 lines
10 KiB
C#
using ChocolArm64.Memory;
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using Ryujinx.Graphics.Gal;
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using System;
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namespace Ryujinx.Graphics.Memory
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{
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public class NvGpuVmm : IMemory, IGalMemory
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{
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public const long AddrSize = 1L << 40;
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private const int PtLvl0Bits = 14;
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private const int PtLvl1Bits = 14;
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private const int PtPageBits = 12;
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private const int PtLvl0Size = 1 << PtLvl0Bits;
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private const int PtLvl1Size = 1 << PtLvl1Bits;
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public const int PageSize = 1 << PtPageBits;
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private const int PtLvl0Mask = PtLvl0Size - 1;
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private const int PtLvl1Mask = PtLvl1Size - 1;
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public const int PageMask = PageSize - 1;
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private const int PtLvl0Bit = PtPageBits + PtLvl1Bits;
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private const int PtLvl1Bit = PtPageBits;
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public MemoryManager Memory { get; private set; }
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private NvGpuVmmCache _cache;
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private const long PteUnmapped = -1;
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private const long PteReserved = -2;
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private long[][] _pageTable;
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public NvGpuVmm(MemoryManager memory)
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{
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Memory = memory;
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_cache = new NvGpuVmmCache(memory);
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_pageTable = new long[PtLvl0Size][];
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}
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public long Map(long pa, long va, long size)
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{
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lock (_pageTable)
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{
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for (long offset = 0; offset < size; offset += PageSize)
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{
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SetPte(va + offset, pa + offset);
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}
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}
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return va;
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}
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public long Map(long pa, long size)
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{
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lock (_pageTable)
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{
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long va = GetFreePosition(size);
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if (va != -1)
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{
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for (long offset = 0; offset < size; offset += PageSize)
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{
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SetPte(va + offset, pa + offset);
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}
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}
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return va;
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}
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}
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public long MapLow(long pa, long size)
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{
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lock (_pageTable)
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{
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long va = GetFreePosition(size, 1, PageSize);
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if (va != -1 && (ulong)va <= uint.MaxValue && (ulong)(va + size) <= uint.MaxValue)
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{
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for (long offset = 0; offset < size; offset += PageSize)
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{
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SetPte(va + offset, pa + offset);
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}
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}
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else
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{
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va = -1;
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}
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return va;
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}
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}
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public long ReserveFixed(long va, long size)
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{
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lock (_pageTable)
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{
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for (long offset = 0; offset < size; offset += PageSize)
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{
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if (IsPageInUse(va + offset))
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{
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return -1;
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}
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}
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for (long offset = 0; offset < size; offset += PageSize)
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{
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SetPte(va + offset, PteReserved);
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}
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}
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return va;
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}
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public long Reserve(long size, long align)
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{
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lock (_pageTable)
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{
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long position = GetFreePosition(size, align);
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if (position != -1)
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{
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for (long offset = 0; offset < size; offset += PageSize)
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{
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SetPte(position + offset, PteReserved);
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}
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}
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return position;
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}
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}
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public void Free(long va, long size)
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{
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lock (_pageTable)
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{
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for (long offset = 0; offset < size; offset += PageSize)
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{
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SetPte(va + offset, PteUnmapped);
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}
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}
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}
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private long GetFreePosition(long size, long align = 1, long start = 1L << 32)
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{
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// Note: Address 0 is not considered valid by the driver,
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// when 0 is returned it's considered a mapping error.
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long position = start;
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long freeSize = 0;
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if (align < 1)
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{
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align = 1;
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}
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align = (align + PageMask) & ~PageMask;
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while (position + freeSize < AddrSize)
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{
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if (!IsPageInUse(position + freeSize))
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{
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freeSize += PageSize;
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if (freeSize >= size)
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{
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return position;
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}
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}
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else
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{
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position += freeSize + PageSize;
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freeSize = 0;
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long remainder = position % align;
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if (remainder != 0)
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{
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position = (position - remainder) + align;
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}
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}
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}
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return -1;
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}
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public long GetPhysicalAddress(long va)
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{
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long basePos = GetPte(va);
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if (basePos < 0)
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{
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return -1;
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}
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return basePos + (va & PageMask);
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}
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public bool IsRegionFree(long va, long size)
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{
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for (long offset = 0; offset < size; offset += PageSize)
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{
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if (IsPageInUse(va + offset))
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{
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return false;
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}
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}
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return true;
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}
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private bool IsPageInUse(long va)
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{
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if (va >> PtLvl0Bits + PtLvl1Bits + PtPageBits != 0)
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{
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return false;
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}
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long l0 = (va >> PtLvl0Bit) & PtLvl0Mask;
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long l1 = (va >> PtLvl1Bit) & PtLvl1Mask;
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if (_pageTable[l0] == null)
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{
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return false;
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}
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return _pageTable[l0][l1] != PteUnmapped;
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}
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private long GetPte(long position)
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{
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long l0 = (position >> PtLvl0Bit) & PtLvl0Mask;
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long l1 = (position >> PtLvl1Bit) & PtLvl1Mask;
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if (_pageTable[l0] == null)
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{
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return -1;
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}
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return _pageTable[l0][l1];
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}
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private void SetPte(long position, long tgtAddr)
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{
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long l0 = (position >> PtLvl0Bit) & PtLvl0Mask;
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long l1 = (position >> PtLvl1Bit) & PtLvl1Mask;
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if (_pageTable[l0] == null)
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{
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_pageTable[l0] = new long[PtLvl1Size];
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for (int index = 0; index < PtLvl1Size; index++)
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{
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_pageTable[l0][index] = PteUnmapped;
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}
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}
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_pageTable[l0][l1] = tgtAddr;
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}
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public bool IsRegionModified(long pa, long size, NvGpuBufferType bufferType)
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{
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return _cache.IsRegionModified(pa, size, bufferType);
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}
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public bool TryGetHostAddress(long position, long size, out IntPtr ptr)
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{
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return Memory.TryGetHostAddress(GetPhysicalAddress(position), size, out ptr);
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}
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public byte ReadByte(long position)
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{
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position = GetPhysicalAddress(position);
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return Memory.ReadByte(position);
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}
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public ushort ReadUInt16(long position)
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{
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position = GetPhysicalAddress(position);
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return Memory.ReadUInt16(position);
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}
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public uint ReadUInt32(long position)
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{
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position = GetPhysicalAddress(position);
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return Memory.ReadUInt32(position);
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}
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public ulong ReadUInt64(long position)
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{
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position = GetPhysicalAddress(position);
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return Memory.ReadUInt64(position);
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}
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public sbyte ReadSByte(long position)
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{
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position = GetPhysicalAddress(position);
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return Memory.ReadSByte(position);
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}
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public short ReadInt16(long position)
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{
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position = GetPhysicalAddress(position);
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return Memory.ReadInt16(position);
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}
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public int ReadInt32(long position)
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{
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position = GetPhysicalAddress(position);
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return Memory.ReadInt32(position);
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}
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public long ReadInt64(long position)
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{
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position = GetPhysicalAddress(position);
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return Memory.ReadInt64(position);
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}
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public byte[] ReadBytes(long position, long size)
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{
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position = GetPhysicalAddress(position);
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return Memory.ReadBytes(position, size);
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}
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public void WriteByte(long position, byte value)
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{
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position = GetPhysicalAddress(position);
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Memory.WriteByte(position, value);
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}
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public void WriteUInt16(long position, ushort value)
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{
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position = GetPhysicalAddress(position);
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Memory.WriteUInt16(position, value);
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}
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public void WriteUInt32(long position, uint value)
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{
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position = GetPhysicalAddress(position);
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Memory.WriteUInt32(position, value);
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}
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public void WriteUInt64(long position, ulong value)
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{
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position = GetPhysicalAddress(position);
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Memory.WriteUInt64(position, value);
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}
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public void WriteSByte(long position, sbyte value)
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{
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position = GetPhysicalAddress(position);
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Memory.WriteSByte(position, value);
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}
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public void WriteInt16(long position, short value)
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{
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position = GetPhysicalAddress(position);
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Memory.WriteInt16(position, value);
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}
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public void WriteInt32(long position, int value)
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{
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position = GetPhysicalAddress(position);
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Memory.WriteInt32(position, value);
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}
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public void WriteInt64(long position, long value)
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{
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position = GetPhysicalAddress(position);
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Memory.WriteInt64(position, value);
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}
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public void WriteBytes(long position, byte[] data)
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{
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position = GetPhysicalAddress(position);
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Memory.WriteBytes(position, data);
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}
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}
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} |