1 // Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

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

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // e32test\mmu\t_mwait.cpp

    15 // Overview:

    16 // Memory Wait State tests

    17 // API Information:

    18 // RChunk

    19 // Details:

    20 // - Load and open the logical device driver ("D_SHADOW.LDD"). Verify

    21 // results.

    22 // - Create a user writable code chunk and copy a small "SpeedTest" function

    23 // into the chunk.

    24 // - Perform a speed test in shadow ROM and RAM and report the relative performance.

    25 // Platforms/Drives/Compatibility:

    26 // All.

    27 // Assumptions/Requirement/Pre-requisites:

    28 // Failures and causes:

    29 // Base Port information:

    30 // 

    31 //

    32 

    33 #include <e32test.h>

    34 #include "u32std.h"

    35 #include "d_shadow.h"

    36 

    37 RTest test(_L("T_MWAIT"));

    38 

    39 typedef TLinAddr (*TMemSpeedTest)(TInt,TInt&);

    40 

    41 extern TLinAddr MemSpeedTest(TInt /*aLoopSize*/, TInt& /*aCount*/);

    42 

    43 TMemSpeedTest TheSpeedTestFunction;

    44 TInt TheLoopSize;

    45 TInt Count;

    46 RSemaphore TheSemaphore;

    47 TUint8* RamSpeedTestCodePtr;	// speed test code will be copied here to run from RAM

    48 

    49 void CopyCode(RChunk& aC)

    50 	{

    51 	TLinAddr code_begin=(TLinAddr)&MemSpeedTest;

    52 	TInt dummy;

    53 	TLinAddr code_end=MemSpeedTest(0,dummy);

    54 	TInt code_size=TInt(code_end-code_begin);

    55 	test.Printf(_L("ROM Code start: %08x\n"), code_begin);

    56 	test.Printf(_L("ROM Code end  : %08x\n"), code_end);

    57 	test.Printf(_L("ROM Code size : %08x\n"), code_size);

    58 	TInt r = aC.CreateLocalCode(code_size, code_size);

    59 	test(r==KErrNone);

    60 	RamSpeedTestCodePtr = aC.Base();

    61 	Mem::Copy(RamSpeedTestCodePtr, (const TAny*)code_begin, code_size);

    62 	User::IMB_Range(RamSpeedTestCodePtr, RamSpeedTestCodePtr + code_size - 1);

    63 	test.Printf(_L("RAM Code base : %08x\n"), RamSpeedTestCodePtr);

    64 	}

    65 

    66 TInt MemSpeedTestThread(TAny*)

    67 	{

    68 	TheSemaphore.Signal();

    69 	(*TheSpeedTestFunction)(TheLoopSize,Count);

    70 	return 0;

    71 	}

    72 

    73 const TInt KHeapSize=4096;

    74 TInt KMemSpeedTestAddress = (TInt)(&MemSpeedTest);

    75 

    76 TInt DoMemSpeedTest(TBool aRam, TInt aLoopSize)

    77 	{

    78 	if (aRam)

    79 #ifdef __MARM__

    80 		TheSpeedTestFunction=(TMemSpeedTest)(RamSpeedTestCodePtr+(KMemSpeedTestAddress&1));	// add 1 if THUMB function

    81 #else

    82 		TheSpeedTestFunction=(TMemSpeedTest)RamSpeedTestCodePtr;

    83 #endif

    84 	else

    85 		TheSpeedTestFunction=MemSpeedTest;

    86 	Count=0;

    87 	TheLoopSize=aLoopSize;

    88 	RShadow sh;

    89 	TInt r=sh.Open();

    90 	test(r==KErrNone);

    91 	RThread t;

    92 	r=t.Create(_L("Speedy"),MemSpeedTestThread,KDefaultStackSize,KHeapSize,KHeapSize,NULL);

    93 	test(r==KErrNone);

    94 //	t.SetPriority(EPriorityLess);

    95 	sh.SetPriority(t.Handle(),25);

    96 	sh.SetPriority(RThread().Handle(),26);

    97 	TRequestStatus s;

    98 	t.Logon(s);

    99 	t.Resume();

   100 	TheSemaphore.Wait();

   101 	User::After(1000000);

   102 	t.Kill(0);

   103 	sh.SetPriority(RThread().Handle(),12);	// so thread gets cleaned up

   104 	User::WaitForRequest(s);

   105 	test(s.Int()==KErrNone);

   106 	test(t.ExitType()==EExitKill);

   107 	CLOSE_AND_WAIT(t);

   108 	sh.Close();

   109 	return Count;

   110 	}

   111 

   112 void DoFullTest(TBool aRam)

   113 	{

   114 	TInt count[32];

   115 	TInt i;

   116 	for (i=0; i<32; i++)

   117 		{

   118 		TInt loopSize=(i+1)*2048;

   119 		test.Printf(_L("Loop size %dK "),loopSize>>10);

   120 		count[i]=DoMemSpeedTest(aRam,loopSize);

   121 		TInt64 inst = TInt64(count[i]) * TInt64(loopSize>>2);

   122 		test.Printf(_L("%d loops %ld instructions\n"),count[i],inst);

   123 		}

   124 	test.Printf(_L("\n"));

   125 	}

   126 

   127 GLDEF_C TInt E32Main()

   128 	{

   129 	test.Title();

   130 

   131 	test.Start(_L("Memory Wait State tests"));

   132 

   133 	TInt r=TheSemaphore.CreateLocal(0);

   134 	test(r==KErrNone);

   135 

   136 	r=User::LoadLogicalDevice(_L("D_SHADOW"));

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

   138 

   139 	RChunk c;

   140 	CopyCode(c);

   141 

   142 	test.Next(_L("Testing ROM wait states..."));

   143 	DoFullTest(EFalse);

   144 

   145 	test.Next(_L("Testing RAM wait states..."));

   146 	DoFullTest(ETrue);

   147 

   148 	c.Close();

   149 	test.End();

   150 	return 0;

   151 	}