PassRefPtr<SharedMemory> SharedMemory::create(size_t size)
{
// On Symbian, global chunks (shared memory segments) have system-unique names, so we pick a random
// number from the kernel's random pool and use it as a string.
// Using an integer simplifies serialization of the name in Handle::encode()
uint32_t random = Math::Random();
TBuf<KMaxKernelName> chunkName;
chunkName.Format(_L("%d"), random);
RChunk chunk;
TInt error = chunk.CreateGlobal(chunkName, size, size);
if (error) {
qCritical() << "Failed to create WK2 shared memory of size " << size << " with error " << error;
return 0;
}
RefPtr<SharedMemory> sharedMemory(adoptRef(new SharedMemory));
sharedMemory->m_handle = chunk.Handle();
sharedMemory->m_size = chunk.Size();
sharedMemory->m_data = static_cast<void*>(chunk.Base());
return sharedMemory.release();
}
PassRefPtr<SharedMemory> SharedMemory::create(const Handle& handle, Protection protection)
{
if (handle.isNull())
return 0;
// Convert number to string, and open the global chunk
TBuf<KMaxKernelName> chunkName;
chunkName.Format(_L("%d"), handle.m_chunkID);
RChunk chunk;
// NOTE: Symbian OS doesn't support read-only global chunks.
TInt error = chunk.OpenGlobal(chunkName, false);
if (error) {
qCritical() << "Failed to create WK2 shared memory from handle " << error;
return 0;
}
chunk.Adjust(chunk.MaxSize());
RefPtr<SharedMemory> sharedMemory(adoptRef(new SharedMemory));
sharedMemory->m_handle = chunk.Handle();
sharedMemory->m_size = chunk.Size();
sharedMemory->m_data = static_cast<void*>(chunk.Base());
return sharedMemory.release();
}
void RDmaSession::SelfTest(TBool aSimulatedDmac)
{
test.Start(_L("Simple transfer test"));
RDmaSession session;
TInt r = KErrUnknown;
if (aSimulatedDmac)
{
test.Next(_L("Open session (simulated DMA)"));
r = session.OpenSim();
}
else
{
test.Next(_L("Open session"));
r = session.Open();
}
test_KErrNone(r);
test.Next(_L("Get test info"));
TDmaV2TestInfo testInfo;
r = session.GetTestInfo(testInfo);
test_KErrNone(r);
if(gVerboseOutput)
{
Print(testInfo);
}
// Self test just needs 1 channel
// The real test will test all available ones
test.Next(_L("Select test channel"));
TUint testChannel = 0;
if(testInfo.iMaxSbChannels > 0)
{
testChannel = testInfo.iSbChannels[0];
}
else if(testInfo.iMaxDbChannels > 0)
{
testChannel = testInfo.iDbChannels[0];
}
else if(testInfo.iMaxSgChannels > 0)
{
testChannel = testInfo.iSgChannels[0];
}
else
{
test.Printf(_L("Driver exposes no channels to test"));
test(EFalse);
}
test.Printf(_L("using PSL cookie %d (0x%08x)\n"), testChannel, testChannel);
test.Next(_L("Open channel"));
TUint channelCookie=0;
r = session.ChannelOpen(testChannel, channelCookie);
test.Printf(_L("cookie recived = 0x%08x\n"), channelCookie);
test_KErrNone(r);
test.Next(_L("Get Channel caps"));
SDmacCaps channelCaps;
r = session.ChannelCaps(channelCookie, channelCaps);
test_KErrNone(r);
if(gVerboseOutput)
{
PRINT(channelCaps.iChannelPriorities);
PRINT(channelCaps.iChannelPauseAndResume);
PRINT(channelCaps.iAddrAlignedToElementSize);
PRINT(channelCaps.i1DIndexAddressing);
PRINT(channelCaps.i2DIndexAddressing);
PRINT(channelCaps.iSynchronizationTypes);
PRINT(channelCaps.iBurstTransactions);
PRINT(channelCaps.iDescriptorInterrupt);
PRINT(channelCaps.iFrameInterrupt);
PRINT(channelCaps.iLinkedListPausedInterrupt);
PRINT(channelCaps.iEndiannessConversion);
PRINT(channelCaps.iGraphicsOps);
PRINT(channelCaps.iRepeatingTransfers);
PRINT(channelCaps.iChannelLinking);
PRINT(channelCaps.iHwDescriptors);
PRINT(channelCaps.iSrcDstAsymmetry);
PRINT(channelCaps.iAsymHwDescriptors);
PRINT(channelCaps.iBalancedAsymSegments);
PRINT(channelCaps.iAsymCompletionInterrupt);
PRINT(channelCaps.iAsymDescriptorInterrupt);
PRINT(channelCaps.iAsymFrameInterrupt);
PRINT(channelCaps.iReserved[0]);
PRINT(channelCaps.iReserved[1]);
PRINT(channelCaps.iReserved[2]);
PRINT(channelCaps.iReserved[3]);
PRINT(channelCaps.iReserved[4]);
}
test.Next(_L("Get extended Channel caps (TDmacTestCaps)"));
TDmacTestCaps extChannelCaps;
r = session.ChannelCaps(channelCookie, extChannelCaps);
test_KErrNone(r);
test.Printf(_L("PIL version = %d\n"), extChannelCaps.iPILVersion);
const TBool newPil = (extChannelCaps.iPILVersion > 1);
test.Next(_L("Create Dma request - max fragment size 32K"));
TUint reqCookie=0;
r = session.RequestCreateOld(channelCookie, reqCookie, 32 * KKilo);
test.Printf(_L("cookie recived = 0x%08x\n"), reqCookie);
test_KErrNone(r);
if(newPil)
{
test.Next(_L("Create Dma request (with new-style callback)"));
TUint reqCookieNewStyle=0;
r = session.RequestCreate(channelCookie, reqCookieNewStyle);
test.Printf(_L("cookie recived = 0x%08x\n"), reqCookieNewStyle );
test_KErrNone(r);
if(!aSimulatedDmac)
{
test.Next(_L("Fragment for ISR callback"));
const TInt size = 128 * KKilo;
TDmaTransferArgs transferArgs(0, size, size, KDmaMemAddr, KDmaSyncAuto, KDmaRequestCallbackFromIsr);
r = session.FragmentRequest(reqCookieNewStyle, transferArgs);
test_KErrNone(r);
TIsrRequeArgs reque;
test.Next(_L("Queue ISR callback - with default re-queue"));
r = session.QueueRequestWithRequeue(reqCookieNewStyle, &reque, 1);
test_KErrNone(r);
}
test.Next(_L("Destroy new-style Dma request"));
r = session.RequestDestroy(reqCookieNewStyle);
test_KErrNone(r);
test.Next(_L("Attempt to destroy request again "));
r = session.RequestDestroy(reqCookieNewStyle);
test_Equal(KErrNotFound, r);
}
test.Next(_L("Open chunk handle"));
RChunk chunk;
r = session.OpenSharedChunk(chunk);
test_KErrNone(r);
if(gVerboseOutput)
{
test.Printf(_L("chunk base = 0x%08x\n"), chunk.Base());
test.Printf(_L("chunk size = %d\n"), chunk.Size());
}
test(chunk.IsWritable());
test(chunk.IsReadable());
if(!aSimulatedDmac)
{
test.Next(_L("Fragment(old style)"));
const TInt size = 128 * KKilo;
TInt i;
for(i = 0; i<10; i++)
{
TUint64 time = 0;
TDmaTransferArgs transferArgs(0, size, size, KDmaMemAddr);
r = session.FragmentRequestOld(reqCookie, transferArgs, &time);
test_KErrNone(r);
if(gVerboseOutput)
{
test.Printf(_L("%lu us\n"), time);
}
}
test.Next(_L("Queue"));
TRequestStatus status;
for(i = 0; i<10; i++)
{
TUint64 time = 0;
r = session.QueueRequest(reqCookie, status, 0, &time);
User::WaitForRequest(status);
test_KErrNone(r);
if(gVerboseOutput)
{
test.Printf(_L("%lu us\n"), time);
}
}
if(newPil)
{
test.Next(_L("Fragment(new style)"));
TDmaTransferArgs transferArgs;
transferArgs.iSrcConfig.iAddr = 0;
transferArgs.iDstConfig.iAddr = size;
transferArgs.iSrcConfig.iFlags = KDmaMemAddr;
transferArgs.iDstConfig.iFlags = KDmaMemAddr;
transferArgs.iTransferCount = size;
for(i = 0; i<10; i++)
{
TUint64 time = 0;
r = session.FragmentRequest(reqCookie, transferArgs, &time);
test_KErrNone(r);
if(gVerboseOutput)
{
test.Printf(_L("%lu us\n"), time);
}
}
}
test.Next(_L("Queue"));
TCallbackRecord record;
r = session.QueueRequest(reqCookie, &record);
test_KErrNone(r);
test.Next(_L("check TCallbackRecord record"));
if(gVerboseOutput)
{
record.Print();
}
const TCallbackRecord expected(TCallbackRecord::EThread, 1);
if(!(record == expected))
{
test.Printf(_L("TCallbackRecords did not match"));
if(gVerboseOutput)
{
test.Printf(_L("expected:"));
expected.Print();
}
TEST_FAULT;
}
}
test.Next(_L("Destroy Dma request"));
r = session.RequestDestroy(reqCookie);
test_KErrNone(r);
test.Next(_L("Close chunk handle"));
chunk.Close();
test.Next(_L("Channel close"));
r = session.ChannelClose(channelCookie);
test_KErrNone(r);
test.Next(_L("Channel close (same again)"));
r = session.ChannelClose(channelCookie);
test_Equal(KErrNotFound, r);
test.Next(_L("Close session"));
RTest::CloseHandleAndWaitForDestruction(session);
test.End();
}