mirror of
https://github.com/ryujinx-mirror/ryujinx.git
synced 2024-12-05 04:57:55 +01:00
330 lines
10 KiB
C#
330 lines
10 KiB
C#
|
using Ryujinx.HLE.HOS.Kernel.Common;
|
|||
|
using System.Collections.Generic;
|
|||
|
using System.Diagnostics;
|
|||
|
|
|||
|
namespace Ryujinx.HLE.HOS.Kernel.Memory
|
|||
|
{
|
|||
|
class KMemoryBlockManager
|
|||
|
{
|
|||
|
private const int PageSize = KPageTableBase.PageSize;
|
|||
|
|
|||
|
private readonly LinkedList<KMemoryBlock> _blocks;
|
|||
|
|
|||
|
public int BlocksCount => _blocks.Count;
|
|||
|
|
|||
|
private KMemoryBlockSlabManager _slabManager;
|
|||
|
|
|||
|
private ulong _addrSpaceEnd;
|
|||
|
|
|||
|
public KMemoryBlockManager()
|
|||
|
{
|
|||
|
_blocks = new LinkedList<KMemoryBlock>();
|
|||
|
}
|
|||
|
|
|||
|
public KernelResult Initialize(ulong addrSpaceStart, ulong addrSpaceEnd, KMemoryBlockSlabManager slabManager)
|
|||
|
{
|
|||
|
_slabManager = slabManager;
|
|||
|
_addrSpaceEnd = addrSpaceEnd;
|
|||
|
|
|||
|
// First insertion will always need only a single block,
|
|||
|
// because there's nothing else to split.
|
|||
|
if (!slabManager.CanAllocate(1))
|
|||
|
{
|
|||
|
return KernelResult.OutOfResource;
|
|||
|
}
|
|||
|
|
|||
|
ulong addrSpacePagesCount = (addrSpaceEnd - addrSpaceStart) / PageSize;
|
|||
|
|
|||
|
_blocks.AddFirst(new KMemoryBlock(
|
|||
|
addrSpaceStart,
|
|||
|
addrSpacePagesCount,
|
|||
|
MemoryState.Unmapped,
|
|||
|
KMemoryPermission.None,
|
|||
|
MemoryAttribute.None));
|
|||
|
|
|||
|
return KernelResult.Success;
|
|||
|
}
|
|||
|
|
|||
|
public void InsertBlock(
|
|||
|
ulong baseAddress,
|
|||
|
ulong pagesCount,
|
|||
|
MemoryState oldState,
|
|||
|
KMemoryPermission oldPermission,
|
|||
|
MemoryAttribute oldAttribute,
|
|||
|
MemoryState newState,
|
|||
|
KMemoryPermission newPermission,
|
|||
|
MemoryAttribute newAttribute)
|
|||
|
{
|
|||
|
// Insert new block on the list only on areas where the state
|
|||
|
// of the block matches the state specified on the old* state
|
|||
|
// arguments, otherwise leave it as is.
|
|||
|
int oldCount = _blocks.Count;
|
|||
|
|
|||
|
oldAttribute |= MemoryAttribute.IpcAndDeviceMapped;
|
|||
|
|
|||
|
ulong endAddr = baseAddress + pagesCount * PageSize;
|
|||
|
|
|||
|
LinkedListNode<KMemoryBlock> node = _blocks.First;
|
|||
|
|
|||
|
while (node != null)
|
|||
|
{
|
|||
|
LinkedListNode<KMemoryBlock> newNode = node;
|
|||
|
|
|||
|
KMemoryBlock currBlock = node.Value;
|
|||
|
|
|||
|
ulong currBaseAddr = currBlock.BaseAddress;
|
|||
|
ulong currEndAddr = currBlock.PagesCount * PageSize + currBaseAddr;
|
|||
|
|
|||
|
if (baseAddress < currEndAddr && currBaseAddr < endAddr)
|
|||
|
{
|
|||
|
MemoryAttribute currBlockAttr = currBlock.Attribute | MemoryAttribute.IpcAndDeviceMapped;
|
|||
|
|
|||
|
if (currBlock.State != oldState ||
|
|||
|
currBlock.Permission != oldPermission ||
|
|||
|
currBlockAttr != oldAttribute)
|
|||
|
{
|
|||
|
node = node.Next;
|
|||
|
|
|||
|
continue;
|
|||
|
}
|
|||
|
|
|||
|
if (baseAddress > currBaseAddr)
|
|||
|
{
|
|||
|
_blocks.AddBefore(node, currBlock.SplitRightAtAddress(baseAddress));
|
|||
|
}
|
|||
|
|
|||
|
if (endAddr < currEndAddr)
|
|||
|
{
|
|||
|
newNode = _blocks.AddBefore(node, currBlock.SplitRightAtAddress(endAddr));
|
|||
|
}
|
|||
|
|
|||
|
newNode.Value.SetState(newPermission, newState, newAttribute);
|
|||
|
|
|||
|
newNode = MergeEqualStateNeighbors(newNode);
|
|||
|
}
|
|||
|
|
|||
|
if (currEndAddr - 1 >= endAddr - 1)
|
|||
|
{
|
|||
|
break;
|
|||
|
}
|
|||
|
|
|||
|
node = newNode.Next;
|
|||
|
}
|
|||
|
|
|||
|
_slabManager.Count += _blocks.Count - oldCount;
|
|||
|
|
|||
|
ValidateInternalState();
|
|||
|
}
|
|||
|
|
|||
|
public void InsertBlock(
|
|||
|
ulong baseAddress,
|
|||
|
ulong pagesCount,
|
|||
|
MemoryState state,
|
|||
|
KMemoryPermission permission = KMemoryPermission.None,
|
|||
|
MemoryAttribute attribute = MemoryAttribute.None)
|
|||
|
{
|
|||
|
// Inserts new block at the list, replacing and splitting
|
|||
|
// existing blocks as needed.
|
|||
|
int oldCount = _blocks.Count;
|
|||
|
|
|||
|
ulong endAddr = baseAddress + pagesCount * PageSize;
|
|||
|
|
|||
|
LinkedListNode<KMemoryBlock> node = _blocks.First;
|
|||
|
|
|||
|
while (node != null)
|
|||
|
{
|
|||
|
LinkedListNode<KMemoryBlock> newNode = node;
|
|||
|
|
|||
|
KMemoryBlock currBlock = node.Value;
|
|||
|
|
|||
|
ulong currBaseAddr = currBlock.BaseAddress;
|
|||
|
ulong currEndAddr = currBlock.PagesCount * PageSize + currBaseAddr;
|
|||
|
|
|||
|
if (baseAddress < currEndAddr && currBaseAddr < endAddr)
|
|||
|
{
|
|||
|
if (baseAddress > currBaseAddr)
|
|||
|
{
|
|||
|
_blocks.AddBefore(node, currBlock.SplitRightAtAddress(baseAddress));
|
|||
|
}
|
|||
|
|
|||
|
if (endAddr < currEndAddr)
|
|||
|
{
|
|||
|
newNode = _blocks.AddBefore(node, currBlock.SplitRightAtAddress(endAddr));
|
|||
|
}
|
|||
|
|
|||
|
newNode.Value.SetState(permission, state, attribute);
|
|||
|
|
|||
|
newNode = MergeEqualStateNeighbors(newNode);
|
|||
|
}
|
|||
|
|
|||
|
if (currEndAddr - 1 >= endAddr - 1)
|
|||
|
{
|
|||
|
break;
|
|||
|
}
|
|||
|
|
|||
|
node = newNode.Next;
|
|||
|
}
|
|||
|
|
|||
|
_slabManager.Count += _blocks.Count - oldCount;
|
|||
|
|
|||
|
ValidateInternalState();
|
|||
|
}
|
|||
|
|
|||
|
public delegate void BlockMutator(KMemoryBlock block, KMemoryPermission newPerm);
|
|||
|
|
|||
|
public void InsertBlock(
|
|||
|
ulong baseAddress,
|
|||
|
ulong pagesCount,
|
|||
|
BlockMutator blockMutate,
|
|||
|
KMemoryPermission permission = KMemoryPermission.None)
|
|||
|
{
|
|||
|
// Inserts new block at the list, replacing and splitting
|
|||
|
// existing blocks as needed, then calling the callback
|
|||
|
// function on the new block.
|
|||
|
int oldCount = _blocks.Count;
|
|||
|
|
|||
|
ulong endAddr = baseAddress + pagesCount * PageSize;
|
|||
|
|
|||
|
LinkedListNode<KMemoryBlock> node = _blocks.First;
|
|||
|
|
|||
|
while (node != null)
|
|||
|
{
|
|||
|
LinkedListNode<KMemoryBlock> newNode = node;
|
|||
|
|
|||
|
KMemoryBlock currBlock = node.Value;
|
|||
|
|
|||
|
ulong currBaseAddr = currBlock.BaseAddress;
|
|||
|
ulong currEndAddr = currBlock.PagesCount * PageSize + currBaseAddr;
|
|||
|
|
|||
|
if (baseAddress < currEndAddr && currBaseAddr < endAddr)
|
|||
|
{
|
|||
|
if (baseAddress > currBaseAddr)
|
|||
|
{
|
|||
|
_blocks.AddBefore(node, currBlock.SplitRightAtAddress(baseAddress));
|
|||
|
}
|
|||
|
|
|||
|
if (endAddr < currEndAddr)
|
|||
|
{
|
|||
|
newNode = _blocks.AddBefore(node, currBlock.SplitRightAtAddress(endAddr));
|
|||
|
}
|
|||
|
|
|||
|
KMemoryBlock newBlock = newNode.Value;
|
|||
|
|
|||
|
blockMutate(newBlock, permission);
|
|||
|
|
|||
|
newNode = MergeEqualStateNeighbors(newNode);
|
|||
|
}
|
|||
|
|
|||
|
if (currEndAddr - 1 >= endAddr - 1)
|
|||
|
{
|
|||
|
break;
|
|||
|
}
|
|||
|
|
|||
|
node = newNode.Next;
|
|||
|
}
|
|||
|
|
|||
|
_slabManager.Count += _blocks.Count - oldCount;
|
|||
|
|
|||
|
ValidateInternalState();
|
|||
|
}
|
|||
|
|
|||
|
[Conditional("DEBUG")]
|
|||
|
private void ValidateInternalState()
|
|||
|
{
|
|||
|
ulong expectedAddress = 0;
|
|||
|
|
|||
|
LinkedListNode<KMemoryBlock> node = _blocks.First;
|
|||
|
|
|||
|
while (node != null)
|
|||
|
{
|
|||
|
LinkedListNode<KMemoryBlock> newNode = node;
|
|||
|
|
|||
|
KMemoryBlock currBlock = node.Value;
|
|||
|
|
|||
|
Debug.Assert(currBlock.BaseAddress == expectedAddress);
|
|||
|
|
|||
|
expectedAddress = currBlock.BaseAddress + currBlock.PagesCount * PageSize;
|
|||
|
|
|||
|
node = newNode.Next;
|
|||
|
}
|
|||
|
|
|||
|
Debug.Assert(expectedAddress == _addrSpaceEnd);
|
|||
|
}
|
|||
|
|
|||
|
private LinkedListNode<KMemoryBlock> MergeEqualStateNeighbors(LinkedListNode<KMemoryBlock> node)
|
|||
|
{
|
|||
|
KMemoryBlock block = node.Value;
|
|||
|
|
|||
|
if (node.Previous != null)
|
|||
|
{
|
|||
|
KMemoryBlock previousBlock = node.Previous.Value;
|
|||
|
|
|||
|
if (BlockStateEquals(block, previousBlock))
|
|||
|
{
|
|||
|
LinkedListNode<KMemoryBlock> previousNode = node.Previous;
|
|||
|
|
|||
|
_blocks.Remove(node);
|
|||
|
|
|||
|
previousBlock.AddPages(block.PagesCount);
|
|||
|
|
|||
|
node = previousNode;
|
|||
|
block = previousBlock;
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
if (node.Next != null)
|
|||
|
{
|
|||
|
KMemoryBlock nextBlock = node.Next.Value;
|
|||
|
|
|||
|
if (BlockStateEquals(block, nextBlock))
|
|||
|
{
|
|||
|
_blocks.Remove(node.Next);
|
|||
|
|
|||
|
block.AddPages(nextBlock.PagesCount);
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
return node;
|
|||
|
}
|
|||
|
|
|||
|
private static bool BlockStateEquals(KMemoryBlock lhs, KMemoryBlock rhs)
|
|||
|
{
|
|||
|
return lhs.State == rhs.State &&
|
|||
|
lhs.Permission == rhs.Permission &&
|
|||
|
lhs.Attribute == rhs.Attribute &&
|
|||
|
lhs.SourcePermission == rhs.SourcePermission &&
|
|||
|
lhs.DeviceRefCount == rhs.DeviceRefCount &&
|
|||
|
lhs.IpcRefCount == rhs.IpcRefCount;
|
|||
|
}
|
|||
|
|
|||
|
public KMemoryBlock FindBlock(ulong address)
|
|||
|
{
|
|||
|
return FindBlockNode(address)?.Value;
|
|||
|
}
|
|||
|
|
|||
|
public LinkedListNode<KMemoryBlock> FindBlockNode(ulong address)
|
|||
|
{
|
|||
|
lock (_blocks)
|
|||
|
{
|
|||
|
LinkedListNode<KMemoryBlock> node = _blocks.First;
|
|||
|
|
|||
|
while (node != null)
|
|||
|
{
|
|||
|
KMemoryBlock block = node.Value;
|
|||
|
|
|||
|
ulong currEndAddr = block.PagesCount * PageSize + block.BaseAddress;
|
|||
|
|
|||
|
if (block.BaseAddress <= address && currEndAddr - 1 >= address)
|
|||
|
{
|
|||
|
return node;
|
|||
|
}
|
|||
|
|
|||
|
node = node.Next;
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
return null;
|
|||
|
}
|
|||
|
}
|
|||
|
}
|