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Improve kernel IPC related syscalls (#1379)

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* Implement session count decrement when the handle is closed

* Remove unused field

* Implement SendSyncRequestWithUserBuffer, SendAsyncRequestWithUserBuffer and ReplyAndReceiveWithUserBuffer syscalls

* Nits

* Fix swapped copy dst/src

* Add missing pointer buffer descriptor write on reply

* Fix IPC unaligned buffer copy and restoring client attributes on reply

* Oops

* Fix SetIpcMappingPermission

* Fix unaligned copy bugs

* Free memory used for temporary IPC buffers
This commit is contained in:
gdkchan 2020-07-17 01:19:07 -03:00 • committed by GitHub
parent 46f8cef6a9
commit 9f6b24edfd
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GPG key ID: 4AEE18F83AFDEB23
14 changed files with 705 additions and 247 deletions
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11
Ryujinx.HLE/HOS/Kernel/Ipc/KBufferDescriptorTable.cs
View file

@ -115,19 +115,20 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
ulong clientEndAddrTruncated = BitUtils.AlignDown(clientEndAddr, KMemoryManager.PageSize);
ulong clientEndAddrRounded = BitUtils.AlignUp (clientEndAddr, KMemoryManager.PageSize);
ulong serverEndAddrTruncated = BitUtils.AlignDown(clientEndAddr, KMemoryManager.PageSize);
ulong serverEndAddrTruncated = BitUtils.AlignDown(serverEndAddr, KMemoryManager.PageSize);
if (clientEndAddrTruncated < clientAddrRounded)
if (clientEndAddrTruncated < clientEndAddrRounded &&
(clientAddrTruncated == clientAddrRounded || clientAddrTruncated < clientEndAddrTruncated))
{
KernelResult result = memoryManager.CopyDataToCurrentProcess(
KernelResult result = memoryManager.CopyDataFromCurrentProcess(
clientEndAddrTruncated,
clientEndAddr - clientEndAddrTruncated,
serverEndAddrTruncated,
stateMask,
stateMask,
MemoryPermission.ReadAndWrite,
attributeMask,
MemoryAttribute.None);
MemoryAttribute.None,
serverEndAddrTruncated);
if (result != KernelResult.Success)
{

76
Ryujinx.HLE/HOS/Kernel/Ipc/KClientPort.cs
View file

@ -1,21 +1,19 @@
using Ryujinx.HLE.HOS.Kernel.Common;
using Ryujinx.HLE.HOS.Kernel.Process;
using Ryujinx.HLE.HOS.Services;
using System.Threading;
namespace Ryujinx.HLE.HOS.Kernel.Ipc
{
class KClientPort : KSynchronizationObject
{
private int _sessionsCount;
private int _currentCapacity;
private readonly int _maxSessions;
private readonly KPort _parent;
public bool IsLight => _parent.IsLight;
private readonly object _countIncLock;
// TODO: Remove that, we need it for now to allow HLE
// SM implementation to work with the new IPC system.
public IpcService Service { get; set; }
@ -24,8 +22,6 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
{
_maxSessions = maxSessions;
_parent = parent;
_countIncLock = new object();
}
public KernelResult Connect(out KClientSession clientSession)
@ -40,26 +36,14 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
return KernelResult.ResLimitExceeded;
}
lock (_countIncLock)
if (!IncrementSessionsCount())
{
if (_sessionsCount < _maxSessions)
{
_sessionsCount++;
}
else
{
currentProcess.ResourceLimit?.Release(LimitableResource.Session, 1);
currentProcess.ResourceLimit?.Release(LimitableResource.Session, 1);
return KernelResult.SessionCountExceeded;
}
if (_currentCapacity < _sessionsCount)
{
_currentCapacity = _sessionsCount;
}
return KernelResult.SessionCountExceeded;
}
KSession session = new KSession(KernelContext);
KSession session = new KSession(KernelContext, this);
if (Service != null)
{
@ -93,18 +77,11 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
return KernelResult.ResLimitExceeded;
}
lock (_countIncLock)
if (!IncrementSessionsCount())
{
if (_sessionsCount < _maxSessions)
{
_sessionsCount++;
}
else
{
currentProcess.ResourceLimit?.Release(LimitableResource.Session, 1);
currentProcess.ResourceLimit?.Release(LimitableResource.Session, 1);
return KernelResult.SessionCountExceeded;
}
return KernelResult.SessionCountExceeded;
}
KLightSession session = new KLightSession(KernelContext);
@ -124,6 +101,43 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
return result;
}
private bool IncrementSessionsCount()
{
while (true)
{
int currentCount = _sessionsCount;
if (currentCount < _maxSessions)
{
if (Interlocked.CompareExchange(ref _sessionsCount, currentCount + 1, currentCount) == currentCount)
{
return true;
}
}
else
{
return false;
}
}
}
public void Disconnect()
{
KernelContext.CriticalSection.Enter();
SignalIfMaximumReached(Interlocked.Decrement(ref _sessionsCount));
KernelContext.CriticalSection.Leave();
}
private void SignalIfMaximumReached(int value)
{
if (value == _maxSessions)
{
Signal();
}
}
public new static KernelResult RemoveName(KernelContext context, string name)
{
KAutoObject foundObj = FindNamedObject(context, name);

34
Ryujinx.HLE/HOS/Kernel/Ipc/KClientSession.cs
View file

@ -13,18 +13,22 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
public ChannelState State { get; set; }
public KClientPort ParentPort { get; }
// TODO: Remove that, we need it for now to allow HLE
// services implementation to work with the new IPC system.
public IpcService Service { get; set; }
public KClientSession(KernelContext context, KSession parent) : base(context)
public KClientSession(KernelContext context, KSession parent, KClientPort parentPort) : base(context)
{
_parent = parent;
_parent = parent;
ParentPort = parentPort;
parentPort?.IncrementReferenceCount();
State = ChannelState.Open;
CreatorProcess = context.Scheduler.GetCurrentProcess();
CreatorProcess.IncrementReferenceCount();
}
@ -51,6 +55,30 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
return result;
}
public KernelResult SendAsyncRequest(KWritableEvent asyncEvent, ulong customCmdBuffAddr = 0, ulong customCmdBuffSize = 0)
{
KThread currentThread = KernelContext.Scheduler.GetCurrentThread();
KSessionRequest request = new KSessionRequest(currentThread, customCmdBuffAddr, customCmdBuffSize, asyncEvent);
KernelContext.CriticalSection.Enter();
KernelResult result = _parent.ServerSession.EnqueueRequest(request);
KernelContext.CriticalSection.Leave();
return result;
}
public void DisconnectFromPort()
{
if (ParentPort != null)
{
ParentPort.Disconnect();
ParentPort.DecrementReferenceCount();
}
}
protected override void Destroy()
{
_parent.DisconnectClient();

47
Ryujinx.HLE/HOS/Kernel/Ipc/KServerSession.cs
View file

@ -633,7 +633,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
{
CloseAllHandles(clientMsg, serverHeader, clientProcess);
CancelRequest(request, clientResult);
FinishRequest(request, clientResult);
}
if (clientHeader.ReceiveListType < 2 &&
@ -770,6 +770,8 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
PointerBufferDesc descriptor = new PointerBufferDesc(pointerDesc);
ulong recvListBufferAddress = 0;
if (descriptor.BufferSize != 0)
{
clientResult = GetReceiveListAddress(
@ -778,8 +780,8 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
clientHeader.ReceiveListType,
serverHeader.MessageSizeInWords,
receiveList,
ref recvListDstOffset,
out ulong recvListBufferAddress);
ref recvListDstOffset,
out recvListBufferAddress);
if (clientResult != KernelResult.Success)
{
@ -806,6 +808,17 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
}
}
ulong dstDescAddress = clientMsg.DramAddress + offset * 4;
ulong clientPointerDesc =
(recvListBufferAddress << 32) |
((recvListBufferAddress >> 20) & 0xf000) |
((recvListBufferAddress >> 30) & 0xffc0);
clientPointerDesc |= pointerDesc & 0xffff000f;
KernelContext.Memory.Write(dstDescAddress + 0, clientPointerDesc);
offset += 2;
}
@ -860,16 +873,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
}
// Unmap buffers from server.
clientResult = request.BufferDescriptorTable.UnmapServerBuffers(serverProcess.MemoryManager);
if (clientResult != KernelResult.Success)
{
CleanUpForError();
return serverResult;
}
WakeClientThread(request, clientResult);
FinishRequest(request, clientResult);
return serverResult;
}
@ -1109,7 +1113,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
{
foreach (KSessionRequest request in IterateWithRemovalOfAllRequests())
{
CancelRequest(request, KernelResult.PortRemoteClosed);
FinishRequest(request, KernelResult.PortRemoteClosed);
}
}
@ -1180,7 +1184,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
return hasRequest;
}
private void CancelRequest(KSessionRequest request, KernelResult result)
private void FinishRequest(KSessionRequest request, KernelResult result)
{
KProcess clientProcess = request.ClientThread.Owner;
KProcess serverProcess = request.ServerProcess;
@ -1221,14 +1225,15 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
{
KProcess clientProcess = request.ClientThread.Owner;
ulong address = clientProcess.MemoryManager.GetDramAddressFromVa(request.CustomCmdBuffAddr);
if (result != KernelResult.Success)
{
ulong address = clientProcess.MemoryManager.GetDramAddressFromVa(request.CustomCmdBuffAddr);
KernelContext.Memory.Write<ulong>(address, 0);
KernelContext.Memory.Write(address + 8, (int)result);
KernelContext.Memory.Write<ulong>(address, 0);
KernelContext.Memory.Write(address + 8, (int)result);
}
clientProcess.MemoryManager.UnborrowIpcBuffer(
request.CustomCmdBuffAddr,
request.CustomCmdBuffSize);
clientProcess.MemoryManager.UnborrowIpcBuffer(request.CustomCmdBuffAddr, request.CustomCmdBuffSize);
request.AsyncEvent.Signal();
}

7
Ryujinx.HLE/HOS/Kernel/Ipc/KSession.cs
View file

@ -11,10 +11,10 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
private bool _hasBeenInitialized;
public KSession(KernelContext context) : base(context)
public KSession(KernelContext context, KClientPort parentPort = null) : base(context)
{
ServerSession = new KServerSession(context, this);
ClientSession = new KClientSession(context, this);
ClientSession = new KClientSession(context, this, parentPort);
_hasBeenInitialized = true;
}
@ -54,10 +54,11 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
{
if (_hasBeenInitialized)
{
ClientSession.DisconnectFromPort();
KProcess creatorProcess = ClientSession.CreatorProcess;
creatorProcess.ResourceLimit?.Release(LimitableResource.Session, 1);
creatorProcess.DecrementReferenceCount();
}
}

8
Ryujinx.HLE/HOS/Kernel/Ipc/KSessionRequest.cs
View file

@ -17,13 +17,15 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
public ulong CustomCmdBuffSize { get; }
public KSessionRequest(
KThread clientThread,
ulong customCmdBuffAddr,
ulong customCmdBuffSize)
KThread clientThread,
ulong customCmdBuffAddr,
ulong customCmdBuffSize,
KWritableEvent asyncEvent = null)
{
ClientThread = clientThread;
CustomCmdBuffAddr = customCmdBuffAddr;
CustomCmdBuffSize = customCmdBuffSize;
AsyncEvent = asyncEvent;
BufferDescriptorTable = new KBufferDescriptorTable();
}