Fix of issue 408, the game still can't boot.

Implement DVDLowUnencryptedRead, Medal Of Honor Heroes 2 use it to get DVD PartitionsInfo (disk offset 0x40000).
and the game try to use IOCtlV, code 0x8b, bushing point out, IOCtlV 0x8b is DVDLowOpenPartition too, so I just return 0 for success.
need further work on this.


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2367 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_DI.cpp

@@ -98,10 +98,28 @@ bool CWII_IPC_HLE_Device_di::IOCtl(u32 _CommandAddress)
 
 bool CWII_IPC_HLE_Device_di::IOCtlV(u32 _CommandAddress) 
 {  
-    PanicAlert("CWII_IPC_HLE_Device_di::IOCtlV() unknown");
+//	PanicAlert("CWII_IPC_HLE_Device_di::IOCtlV() unknown");
+//	DumpCommands(_CommandAddress);
+	u32 ReturnValue = 0;
 
-    DumpCommands(_CommandAddress);
+	SIOCtlVBuffer CommandBuffer(_CommandAddress);
 
+	switch (CommandBuffer.Parameter)
+	{
+	// DVDLowOpenPartition???
+	case 0x8b:
+		{
+			LOG(WII_IPC_DVD, "DVD IOCtlV: DVDLowOpenPartition");
+			_dbg_assert_msg_(WII_IPC_DVD, 0, "DVD IOCtlV: DVDLowOpenPartition");
+		}
+		break;
+	default:
+		LOG(WII_IPC_DVD, "DVD IOCtlV: %i", CommandBuffer.Parameter);
+		_dbg_assert_msg_(WII_IPC_DVD, 0, "DVD: %i", CommandBuffer.Parameter);
+		break;
+	}
+
+	Memory::Write_U32(ReturnValue, _CommandAddress+4);
     return true;
 }
 
@@ -281,7 +299,27 @@ u32 CWII_IPC_HLE_Device_di::ExecuteCommand(u32 _BufferIn, u32 _BufferInSize, u32
 
 	// DVDLowUnencryptedRead 
 	case 0x8d:
-		PanicAlert("DVDLowUnencryptedRead");
+		//PanicAlert("DVDLowUnencryptedRead");
+		{
+			if (_BufferOut == 0)
+			{
+				PanicAlert("DVDLowRead : _BufferOut == 0");
+				return 0;
+			}
+			u32 Size = Memory::Read_U32(_BufferIn + 0x04);
+			u64 DVDAddress = (u64)Memory::Read_U32(_BufferIn + 0x08) << 2;
+
+			if (Size > _BufferOutSize)
+			{
+				PanicAlert("Detected attempt to read more data from the DVD than fit inside the out buffer. Clamp.");
+				Size = _BufferOutSize;
+			}
+
+			if (VolumeHandler::RAWReadToPtr(Memory::GetPointer(_BufferOut), DVDAddress, Size) != true)
+			{
+				PanicAlert("Cant read from DVD_Plugin - DVD-Interface: Fatal Error");
+			}		
+		}
 		break;
 
     // DVDLowSeek

Source/Core/Core/Src/VolumeHandler.cpp

@@ -77,6 +77,17 @@ bool ReadToPtr(u8* ptr, u64 _dwOffset, u64 _dwLength)
     return false;
 }
 
+bool RAWReadToPtr( u8* ptr, u64 _dwOffset, u64 _dwLength )
+{
+	if (g_pVolume != NULL && ptr)
+	{
+		g_pVolume->RAWRead(_dwOffset, _dwLength, ptr);
+		return true;
+	}
+
+	return false;
+}
+
 bool IsValid()
 {
     return g_pVolume != NULL;

Source/Core/Core/Src/VolumeHandler.h

@@ -33,6 +33,7 @@ void SetVolumeDirectory(const std::string& _rFullPath, bool _bIsWii);
 
 u32 Read32(u64 _Offset);
 bool ReadToPtr(u8* ptr, u64 _dwOffset, u64 _dwLength);
+bool RAWReadToPtr(u8* ptr, u64 _dwOffset, u64 _dwLength);
 
 bool IsValid();
 bool IsWii();

Source/Core/DiscIO/Src/Volume.h

@@ -38,6 +38,7 @@ class IVolume
 
 
 		virtual bool Read(u64 _Offset, u64 _Length, u8* _pBuffer) const = 0;
+		virtual bool RAWRead(u64 _Offset, u64 _Length, u8* _pBuffer) const = 0;
 		virtual std::string GetUniqueID() const = 0;
 		virtual std::string GetMakerID() const = 0;
 		virtual std::string GetName() const = 0;

Source/Core/DiscIO/Src/VolumeDirectory.cpp

@@ -69,6 +69,11 @@ bool CVolumeDirectory::IsValidDirectory(const std::string& _rDirectory)
 	return File::IsDirectory(directoryName.c_str());
 }
 
+bool CVolumeDirectory::RAWRead( u64 _Offset, u64 _Length, u8* _pBuffer ) const
+{
+	return false;
+}
+
 bool CVolumeDirectory::Read(u64 _Offset, u64 _Length, u8* _pBuffer) const
 {
 	if(_Offset < FST_ADDRESS)

Source/Core/DiscIO/Src/VolumeDirectory.h

@@ -42,6 +42,7 @@ class CVolumeDirectory
 		static bool IsValidDirectory(const std::string& _rDirectory);
 
 		bool Read(u64 _Offset, u64 _Length, u8* _pBuffer) const;
+		bool RAWRead(u64 _Offset, u64 _Length, u8* _pBuffer) const;
 
 		std::string GetUniqueID() const;
 		void SetUniqueID(std::string _ID);

Source/Core/DiscIO/Src/VolumeGC.cpp

@@ -55,6 +55,11 @@ bool CVolumeGC::Read(u64 _Offset, u64 _Length, u8* _pBuffer) const
 	return m_pReader->Read(_Offset, _Length, _pBuffer);
 }
 
+bool CVolumeGC::RAWRead( u64 _Offset, u64 _Length, u8* _pBuffer ) const
+{
+	return false;
+}
+
 std::string CVolumeGC::GetUniqueID() const
 {
 	static const std::string NO_UID("NO_UID");

Source/Core/DiscIO/Src/VolumeGC.h

@@ -30,6 +30,7 @@ public:
 	CVolumeGC(IBlobReader* _pReader);
 	~CVolumeGC();
 	bool Read(u64 _Offset, u64 _Length, u8* _pBuffer) const;
+	bool RAWRead(u64 _Offset, u64 _Length, u8* _pBuffer) const;
 	std::string GetUniqueID() const;
 	std::string GetMakerID() const;
 	std::string GetName() const;

Source/Core/DiscIO/Src/VolumeWiiCrypted.cpp

@@ -41,6 +41,17 @@ CVolumeWiiCrypted::~CVolumeWiiCrypted()
 	m_pBuffer = NULL;
 }
 
+bool CVolumeWiiCrypted::RAWRead( u64 _Offset, u64 _Length, u8* _pBuffer ) const
+{
+	// HyperIris: hack for DVDLowUnencryptedRead
+	// Medal Of Honor Heroes 2 read this DVD offset for PartitionsInfo
+	// and, PartitionsInfo is not encrypted, let's read it directly.
+	if (!m_pReader->Read(_Offset, _Length, _pBuffer))
+	{
+		return(false);
+	}
+	return true;
+}
 
 bool
 CVolumeWiiCrypted::Read(u64 _ReadOffset, u64 _Length, u8* _pBuffer) const
@@ -255,4 +266,6 @@ CVolumeWiiCrypted::GetSize() const
 		return(0);
 	}
 }
+
+
 } // namespace

Source/Core/DiscIO/Src/VolumeWiiCrypted.h

@@ -32,6 +32,7 @@ public:
 	CVolumeWiiCrypted(IBlobReader* _pReader, u64 _VolumeOffset, const unsigned char* _pVolumeKey);
 	~CVolumeWiiCrypted();
 	bool Read(u64 _Offset, u64 _Length, u8* _pBuffer) const;
+	bool RAWRead(u64 _Offset, u64 _Length, u8* _pBuffer) const;
 	std::string GetUniqueID() const;
 	std::string GetMakerID() const;
 	std::string GetName() const;