/// <summary>
/// Sets up an IN transaction and adds it to the specified transfer.
/// </summary>
/// <param name="transfer">The transfer to which the transaction should be added.</param>
/// <param name="uTransaction">The USB Transaction to convert to an EHCI transaction.</param>
/// <param name="toggle">The transaction toggle state.</param>
/// <param name="buffer">The buffer to store the incoming data in.</param>
/// <param name="length">The length of the buffer.</param>
protected override void _INTransaction(USBTransfer transfer, USBTransaction uTransaction, bool toggle, void* buffer, ushort length)
{
// Create an EHCI-specific object to describe the transaction
EHCITransaction eTransaction = new EHCITransaction();
// Store the underlying HC-specific transaction info
uTransaction.underlyingTz = eTransaction;
// IN transaction so use the supplied input data buffer
eTransaction.inBuffer = buffer;
eTransaction.inLength = length;
#if EHCI_TRACE
DBGMSG(((FOS_System.String)"IN Transaction : buffer=") + (uint)buffer);
DBGMSG(((FOS_System.String)"IN Transaction : Before CreateQTD : bufferPtr=&qTDBuffer=") + (uint)buffer);
#endif
// Create and initialise the IN queue transfer descriptor
eTransaction.qTD = CreateQTD_IO(null, 1, toggle, length, length);
#if EHCI_TRACE
DBGMSG(((FOS_System.String)"IN Transaction : After CreateQTD : bufferPtr=&qTDBuffer=") + (uint)buffer + ", Buffer0=" + (uint)eTransaction.qTD.Buffer0);
#endif
// If the number of existing transactions is greater than 0
// i.e. some transactions have already been added.
if (transfer.transactions.Count > 0)
{
// Get the previous (i.e. last) transaction then the underlying transaction from it
EHCITransaction eLastTransaction = (EHCITransaction)((USBTransaction)(transfer.transactions[transfer.transactions.Count - 1])).underlyingTz;
// Create a wrapper for the last transaction (qTD)
EHCI_qTD lastQTD = eLastTransaction.qTD;
// Set the Next Transaction (qTD) Pointer on the previous qTD to point to the qTD
// we just created.
// Note: The NextqTDPointer must be the physical address of qTD data.
lastQTD.NextqTDPointer = (EHCI_qTD_Struct*)VirtMemManager.GetPhysicalAddress(eTransaction.qTD.qtd);
// Mark the previous qTD's Next Transaction Pointer as valid.
lastQTD.NextqTDPointerTerminate = false;
}
}
/// <summary>
/// Sets up an IN transaction and adds it to the specified transfer.
/// </summary>
/// <param name="transfer">The transfer to which the transaction should be added.</param>
/// <param name="uTransaction">The USB Transaction to convert to an EHCI transaction.</param>
/// <param name="toggle">The transaction toggle state.</param>
/// <param name="buffer">The buffer of outgoing data.</param>
/// <param name="length">The length of the buffer.</param>
protected override void _OUTTransaction(USBTransfer transfer, USBTransaction uTransaction, bool toggle, void* buffer, ushort length)
{
// Create an EHCI-specific object to describe the transaction
EHCITransaction eTransaction = new EHCITransaction();
// Store the underlying HC-specific transaction info
uTransaction.underlyingTz = eTransaction;
// OUT transaction so there is no input buffer
eTransaction.inBuffer = null;
eTransaction.inLength = 0u;
// Create and initialise the OUT queue transfer descriptor
EHCI_qTD theQTD = CreateQTD_IO(null, 0, toggle, length, length);
// Set the qTD structure in the transaction description object
eTransaction.qTD = theQTD;
// If there is an output buffer and it has > 0 length:
if (buffer != null && length != 0)
{
// Copy the data from the output buffer to the transaction's output buffer
// The transaction's output buffer has been allocated so it as aligned correctly
// where as there is no guarantee the output buffer passed to us has been so we
// must copy the data across.
Utilities.MemoryUtils.MemCpy_32(theQTD.Buffer0VirtAddr, (byte*)buffer, length);
#if EHCI_TRACE
BasicConsole.WriteLine("EHCI: OUTTransaction - Buffer0:");
BasicConsole.DumpMemory(theQTD.Buffer0VirtAddr, length);
#endif
}
// If the number of existing transactions is greater than 0
// i.e. some transactions have already been added.
if (transfer.transactions.Count > 0)
{
// Get the previous (i.e. last) transaction then the underlying transaction from it
EHCITransaction eLastTransaction = (EHCITransaction)((USBTransaction)(transfer.transactions[transfer.transactions.Count - 1])).underlyingTz;
// Create a wrapper for the last transaction (qTD)
EHCI_qTD lastQTD = eLastTransaction.qTD;
// Set the Next Transaction (qTD) Pointer on the previous qTD to point to the qTD
// we just created.
// Note: The NextqTDPointer must be the physical address of qTD data.
lastQTD.NextqTDPointer = (EHCI_qTD_Struct*)VirtMemManager.GetPhysicalAddress(eTransaction.qTD.qtd);
// Mark the previous qTD's Next Transaction Pointer as valid.
lastQTD.NextqTDPointerTerminate = false;
}
}
/// <summary>
/// Sets up a SETUP transaction and adds it to the specified transfer.
/// </summary>
/// <param name="transfer">The transfer to which the transaction should be added.</param>
/// <param name="uTransaction">The USB Transaction to convert to an EHCI Transaction.</param>
/// <param name="toggle">The transaction toggle state.</param>
/// <param name="tokenBytes">The number of bytes to send.</param>
/// <param name="type">The type of the USB Request.</param>
/// <param name="req">The specific USB Request.</param>
/// <param name="hiVal">The USB Request Hi-Val.</param>
/// <param name="loVal">The USB Request Lo-Val.</param>
/// <param name="index">The USB request index.</param>
/// <param name="length">The length of the USB request.</param>
protected override void _SETUPTransaction(USBTransfer transfer, USBTransaction uTransaction, bool toggle, ushort tokenBytes,
byte type, byte req, byte hiVal, byte loVal, ushort index, ushort length)
{
// Create an EHCI-specific object to describe the transaction
EHCITransaction eTransaction = new EHCITransaction();
// Store the underlying HC-specific transaction info
uTransaction.underlyingTz = eTransaction;
// SETUP transaction so there is no input buffer
eTransaction.inBuffer = null;
eTransaction.inLength = 0u;
// Create and initialise the SETUP queue transfer descriptor
eTransaction.qTD = CreateQTD_SETUP(null, toggle, tokenBytes, type, req, hiVal, loVal, index, length);
// If the number of existing transactions is greater than 0
// i.e. some transactions have already been added.
if (transfer.transactions.Count > 0)
{
// Get the previous (i.e. last) transaction then the underlying transaction from it
EHCITransaction eLastTransaction = (EHCITransaction)((USBTransaction)(transfer.transactions[transfer.transactions.Count - 1])).underlyingTz;
// Create a wrapper for the last transaction (qTD)
EHCI_qTD lastQTD = eLastTransaction.qTD;
// Set the Next Transaction (qTD) Pointer on the previous qTD to point to the qTD
// we just created.
// Note: The NextqTDPointer must be the physical address of qTD data.
lastQTD.NextqTDPointer = (EHCI_qTD_Struct*)VirtMemManager.GetPhysicalAddress(eTransaction.qTD.qtd);
// Mark the previous qTD's Next Transaction Pointer as valid.
lastQTD.NextqTDPointerTerminate = false;
}
}