// Copyright (c) 1996-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// e32test\pccd\t_idrv.cpp

// Overview:

// Tests for the internal RAM drive

// API Information:

// TBusLocalDrive

// Details:

// - Load a Physical Device Driver for the RAM Media Driver.

// - Find the internal drive: type == EMediaRam

// - Display and adjust various drive capabilities, verify results

// are as expected.

// - Read and write the drive using various drive sizes, verify results

// are as expected.

// - Format the drive, verify results.

// - Set original size and reformat. 

// Platforms/Drives/Compatibility:

// All.

// Assumptions/Requirement/Pre-requisites:

// Failures and causes:

// Base Port information:

// 

//

#include <e32test.h>

#include <e32svr.h>

#include <e32hal.h>

#include <e32uid.h>

#include "../mmu/mmudetect.h"

#include <f32file.h>

#define PDD_NAME _L("MEDINT")

const TInt KTestDriveLen=0x00040000;	//256K

const TInt KSmallDriveInc=0x00000400;	//1K

const TInt KBigDriveLen=0x00100000;		//1M - WINS

const TInt KTestBufLen=256;

RTest test(_L("T_IDRV"));

void Format(TInt aDrive, RFs& aFs)

//

// Format current drive

//

	{

	test.Next(_L("Format"));

	TBuf<4> driveBuf=_L("?:\\");

	driveBuf[0]=(TText)(aDrive+'A');

	RFormat format;

	TInt count;

	TInt r=format.Open(aFs,driveBuf,EHighDensity,count);

	test(r==KErrNone);

	while(count)

		{

		TInt r=format.Next(count);

		test(r==KErrNone);

		}

	format.Close();

	}

GLDEF_C TInt E32Main()

    {

	test.Title();

	if (!HaveVirtMem())

		{

		test.Printf(_L("Needs MMU\n"));

		return 0;

		}

#if defined(__EPOC32__) && defined(__CPU_X86)

	test.Printf(_L("Doesn't run on X86\n"));

#else

	TBusLocalDrive theInternalDrive;

    TInt msgHandle = KLocalMessageHandle;

	UserSvr::UnlockRamDrive();

	test.Printf(_L("Warning - this will destroy internal drive.\r\n"));

	TChar c= 'C';

	c.UpperCase();

	if (c!='C')

		return(0);

	test.Start(_L("Check loader running"));

	test.Next(_L("Load Internal Ram Media Driver"));

	TInt r=User::LoadPhysicalDevice(PDD_NAME);

	test(r==KErrNone || r==KErrAlreadyExists);

	test.Next(_L("Find internal drive"));

	TDriveInfoV1Buf driveInfoBuf;

	UserHal::DriveInfo(driveInfoBuf);

	TDriveInfoV1& driveInfo = driveInfoBuf();

	TInt drive = 0;

	for ( ; drive < driveInfo.iTotalSupportedDrives; ++drive)

		{

		TBool changedFlag;

		theInternalDrive.Connect(drive, changedFlag);

		TLocalDriveCapsV2 info;

		TPckg<TLocalDriveCapsV2> infoPckg(info);

		theInternalDrive.Caps(infoPckg);

		if (info.iType == EMediaRam)

			{

			break;

			}

		theInternalDrive.Disconnect();

		}

	test(drive < driveInfo.iTotalSupportedDrives);

	test.Next(_L("Capabilities"));

	TLocalDriveCapsV2 info;

	TPckg<TLocalDriveCapsV2> infoPckg(info);

	test(theInternalDrive.Caps(infoPckg)==KErrNone);

	TUint saveSize=I64LOW(info.iSize);

	test(info.iType==EMediaRam);

	test(info.iBattery==EBatNotSupported);

	test(info.iDriveAtt==(KDriveAttLocal|KDriveAttInternal));

	test(info.iMediaAtt==(KMediaAttVariableSize|KMediaAttFormattable));

	test(info.iFileSystemId==KDriveFileSysFAT);

	test.Printf(_L("Current drive size: %lx\n"),info.iSize);

	test.Next(_L("Set size to zero"));

	test(theInternalDrive.ReduceSize(0,saveSize)==KErrNone);

	test(theInternalDrive.Caps(infoPckg)==KErrNone);

	test(info.iSize==0);

	test(theInternalDrive.ReduceSize(0,-1)==KErrArgument);

	test(theInternalDrive.Enlarge(-1)==KErrArgument);

	test.Next(_L("Increase to large size"));

#if defined (__WINS__)

	TUint cSize=KBigDriveLen;

#else

	TMemoryInfoV1Buf memBuf;

	TMemoryInfoV1 &mi=memBuf();

	UserHal::MemoryInfo(memBuf);

//	TUint cSize=(mi.iTotalRamInBytes-KTestDriveLen); // Leave last 256K - used by Kernel etc.

//	TUint cSize=mi.iTotalRamInBytes>>1; 			 // Half ram

//	TUint cSize=mi.iTotalRamInBytes>>2; 			 // Quarter ram

	TUint cSize=mi.iTotalRamInBytes>>3; 			 // Eighth ram

#endif

	test.Printf(_L("(Increasing to %dbytes)\r\n"),cSize);

	test(theInternalDrive.Enlarge(cSize)==KErrNone);

//	test(theInternalDrive.Enlarge(cSize-saveSize)==KErrNone); // ???

	test(theInternalDrive.Caps(infoPckg)==KErrNone);

	test(I64LOW(info.iSize)==cSize);

	test.Next(_L("Increase by 1K"));

	cSize+=KSmallDriveInc;

	test(theInternalDrive.Enlarge(KSmallDriveInc)==KErrNone);

	test(theInternalDrive.Caps(infoPckg)==KErrNone);

	test(I64LOW(info.iSize)==cSize);

	test.Next(_L("Reduce to 256K"));

	test(theInternalDrive.ReduceSize(0,(cSize-KTestDriveLen))==KErrNone);

	cSize=KTestDriveLen;

	test(theInternalDrive.Caps(infoPckg)==KErrNone);

	test(I64LOW(info.iSize)==(TUint)KTestDriveLen);

	test.Next(_L("Write/Read"));

	TBuf8<KTestBufLen> wrBuf(KTestBufLen),rdBuf;

	TUint i,j,len;

	for (i=0 ; i<(TUint)KTestBufLen ; i++)

		wrBuf[i]=(TUint8)i;

	for (i=0,j=0;i<(TUint)KTestDriveLen;i+=len,j++)

		{

		len=Min(KTestBufLen,(KTestDriveLen-i));

		rdBuf.Fill(0,len);

		wrBuf[0]=(TUint8)j;

		test(theInternalDrive.Write(i,len,&wrBuf,msgHandle,0)==KErrNone);

 		test(theInternalDrive.Read(i,len,&rdBuf,msgHandle,0)==KErrNone);

		wrBuf.SetLength(len);

  	    test(rdBuf.Compare(wrBuf)==0);

		}

	test.Next(_L("Reduce size - 256 bytes from start"));

 	test(theInternalDrive.ReduceSize(0,KTestBufLen)==KErrNone);

	test(theInternalDrive.Caps(infoPckg)==KErrNone);

	cSize-=KTestBufLen;

	test(I64LOW(info.iSize)==(TUint)cSize);

	for (i=0,j=1;i<cSize;i+=len,j++)

		{

		len=Min(KTestBufLen,(cSize-i));

		rdBuf.Fill(0,len);

		wrBuf[0]=(TUint8)j;

 		test(theInternalDrive.Read(i,len,&rdBuf,msgHandle,0)==KErrNone);

		wrBuf.SetLength(len);

  	    test(rdBuf.Compare(wrBuf)==0);

		}

	test.Next(_L("Reduce size - (4K+127) bytes from middle"));

	TInt reduction=((KTestBufLen<<4)+((KTestBufLen>>1)-1)); 

 	test(theInternalDrive.ReduceSize(KTestBufLen,reduction)==KErrNone); 

	test(theInternalDrive.Caps(infoPckg)==KErrNone);

	cSize-=reduction;

	test(I64LOW(info.iSize)==(TUint)cSize);

	TBuf8<KTestBufLen> odBuf(KTestBufLen); // To verify new pattern 

	for (i=0 ; i<(TUint)KTestBufLen ; i++)

		{

		if (i<=(KTestBufLen>>1))

			odBuf[i]=(TUint8)(i+((KTestBufLen>>1)-1));

		else

			odBuf[i]=(TUint8)(i-((KTestBufLen>>1)+1));

		}

	for (i=0,j=1;i<cSize;i+=len,j++)

		{

		len=Min(KTestBufLen,(cSize-i));

		rdBuf.Fill(0,len);

 		test(theInternalDrive.Read(i,len,&rdBuf,msgHandle,0)==KErrNone);

		if (j==2)

			j+=17;

		if (j==1)

			{

			wrBuf[0]=(TUint8)j;

			wrBuf.SetLength(len);

  	    	test(rdBuf.Compare(wrBuf)==0);

			}

		else

			{

			odBuf.SetLength(KTestBufLen);

			odBuf[((KTestBufLen>>1)+1)]=(TUint8)j;

			odBuf.SetLength(len);

  	    	test(rdBuf.Compare(odBuf)==0);

			}

		}

	test.Next(_L("Reduce size - (8K-1) bytes from end"));

	reduction=((KTestBufLen<<5)-1); 

	test(theInternalDrive.ReduceSize((cSize-reduction),reduction)==KErrNone);

	test(theInternalDrive.Caps(infoPckg)==KErrNone);

	cSize-=reduction;

	test(info.iSize==cSize);

	for (i=0,j=1;i<cSize;i+=len,j++)

		{

		len=Min(KTestBufLen,(cSize-i));

		rdBuf.Fill(0,len);

 		test(theInternalDrive.Read(i,len,&rdBuf,msgHandle,0)==KErrNone);

		if (j==2)

			j+=17;

		if (j==1)

			{

			wrBuf[0]=(TUint8)j;

			wrBuf.SetLength(len);

  	    	test(rdBuf.Compare(wrBuf)==0);

			}

		else

			{

			odBuf.SetLength(KTestBufLen);

			odBuf[((KTestBufLen>>1)+1)]=(TUint8)j;

			odBuf.SetLength(len);

  	    	test(rdBuf.Compare(odBuf)==0);

			}

		}

	test.Next(_L("Format"));

	wrBuf.Fill(0,KTestBufLen);

	TFormatInfo fi;

	TInt ret;

	while((ret=theInternalDrive.Format(fi))!=KErrEof)

		test(ret==KErrNone);

	for (i=0;i<cSize;i+=len)

		{

		len=Min(KTestBufLen,(cSize-i));

		rdBuf.Fill(0xAA,len);

 		test(theInternalDrive.Read(i,len,&rdBuf,msgHandle,0)==KErrNone);

		wrBuf.SetLength(len);

  	    test(rdBuf.Compare(wrBuf)==0);

		}

	test.Next(_L("Restore original size"));

	TInt sizeDif=cSize-saveSize;

	if (sizeDif>0)

		test(theInternalDrive.ReduceSize(0,sizeDif)==KErrNone);

	else

		test(theInternalDrive.Enlarge(sizeDif*-1)==KErrNone);

	test.Next(_L("Disconnect from internal drive"));

	theInternalDrive.Disconnect();

	RFs fs;

	test(fs.Connect()==KErrNone);

	for(drive=25 ; drive>=0; --drive)

		{

		TDriveInfo info;

		if(fs.Drive(info,drive)==KErrNone)

			if(info.iType==EMediaRam)

				{

				TBuf<256> text;

				text.Append(_L("Formatting drive "));

				text.Append(TText(drive+'A'));

				text.Append(_L(": ..."));

				test.Next(text);

				Format(drive,fs);

				break;

				}

		}

    test.End();

#endif	// x86

	return(0);

	}