/** @file\r
Debug Port Library implementation based on usb3 debug port.\r
\r
- Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
\r
#include "DebugCommunicationLibUsb3Internal.h"\r
\r
-//\r
-// The global variable which can be used after memory is ready.\r
-//\r
-USB3_DEBUG_PORT_HANDLE mDebugCommunicationLibUsb3DebugPortHandle;\r
-\r
UINT16 mString0Desc[] = {\r
// String Descriptor Type + Length\r
( USB_DESC_TYPE_STRING << 8 ) + STRING0_DESC_LEN,\r
Write the data to the XHCI debug register.\r
\r
@param Handle Debug port handle.\r
- @param Offset The offset of the runtime register.\r
+ @param Offset The offset of the debug register.\r
@param Data The data to write.\r
\r
**/\r
}\r
\r
/**\r
- Set one bit of the runtime register while keeping other bits.\r
+ Set one bit of the debug register while keeping other bits.\r
\r
@param Handle Debug port handle.\r
- @param Offset The offset of the runtime register.\r
+ @param Offset The offset of the debug register.\r
@param Bit The bit mask of the register to set.\r
\r
**/\r
VOID\r
XhcSetDebugRegBit (\r
- IN USB3_DEBUG_PORT_HANDLE *Handle,\r
+ IN USB3_DEBUG_PORT_HANDLE *Handle,\r
IN UINT32 Offset,\r
IN UINT32 Bit\r
)\r
XhcWriteDebugReg (Handle, Offset, Data);\r
}\r
\r
+/**\r
+ Clear one bit of the debug register while keeping other bits.\r
+\r
+ @param Handle Debug port handle.\r
+ @param Offset The offset of the debug register.\r
+ @param Bit The bit mask of the register to clear.\r
+\r
+**/\r
+VOID\r
+XhcClearDebugRegBit (\r
+ IN USB3_DEBUG_PORT_HANDLE *Handle,\r
+ IN UINT32 Offset,\r
+ IN UINT32 Bit\r
+ )\r
+{\r
+ UINT32 Data;\r
+\r
+ Data = XhcReadDebugReg (Handle, Offset);\r
+ Data &= ~Bit;\r
+ XhcWriteDebugReg (Handle, Offset, Data);\r
+}\r
+\r
/**\r
Program and eanble XHCI MMIO base address.\r
\r
return XhciMmioBase;\r
}\r
\r
-/**\r
- Check if the timer is timeout.\r
- \r
- @param[in] UsbDebugPortHandle Pointer to USB Debug port handle\r
- @param[in] Timer The start timer from the begin.\r
- @param[in] TimeoutTicker Ticker number need time out.\r
-\r
- @return TRUE Timer time out occurs.\r
- @retval FALSE Timer does not time out.\r
-\r
-**/\r
-BOOLEAN\r
-IsTimerTimeout (\r
- IN USB3_DEBUG_PORT_HANDLE *UsbDebugPortHandle,\r
- IN UINT64 Timer,\r
- IN UINT64 TimeoutTicker\r
- )\r
-{\r
- UINT64 CurrentTimer;\r
- UINT64 Delta;\r
-\r
- CurrentTimer = GetPerformanceCounter ();\r
-\r
- if (UsbDebugPortHandle->TimerCountDown) {\r
- //\r
- // The timer counter counts down. Check for roll over condition.\r
- //\r
- if (CurrentTimer < Timer) {\r
- Delta = Timer - CurrentTimer;\r
- } else {\r
- //\r
- // Handle one roll-over. \r
- //\r
- Delta = UsbDebugPortHandle->TimerCycle - (CurrentTimer - Timer);\r
- }\r
- } else {\r
- //\r
- // The timer counter counts up. Check for roll over condition.\r
- //\r
- if (CurrentTimer > Timer) {\r
- Delta = CurrentTimer - Timer;\r
- } else {\r
- //\r
- // Handle one roll-over. \r
- //\r
- Delta = UsbDebugPortHandle->TimerCycle - (Timer - CurrentTimer);\r
- }\r
- }\r
- \r
- return (BOOLEAN) (Delta >= TimeoutTicker);\r
-}\r
-\r
/**\r
Update XHC MMIO base address when MMIO base address is changed.\r
\r
IN EFI_PHYSICAL_ADDRESS XhciMmioBase\r
)\r
{\r
- if ((Handle == NULL) || (Handle->XhciMmioBase == XhciMmioBase)) {\r
+ if (Handle == NULL) {\r
return;\r
}\r
\r
\r
@param Handle Debug port handle.\r
\r
- @retval RETURN_UNSUPPORTED The usb host controller does not supported usb debug port capability.\r
+ @retval RETURN_UNSUPPORTED The usb host controller does not support usb debug port capability.\r
@retval RETURN_SUCCESS Get bar and offset successfully.\r
\r
**/\r
EFI_PHYSICAL_ADDRESS CapabilityPointer;\r
UINT8 CapLength;\r
\r
+ if (Handle->Initialized != USB3DBG_UNINITIALIZED) {\r
+ if (Handle->Initialized == USB3DBG_NO_DBG_CAB) {\r
+ return RETURN_UNSUPPORTED;\r
+ } else {\r
+ return RETURN_SUCCESS;\r
+ }\r
+ }\r
+\r
VendorId = PciRead16 (PcdGet32(PcdUsbXhciPciAddress) + PCI_VENDOR_ID_OFFSET);\r
DeviceId = PciRead16 (PcdGet32(PcdUsbXhciPciAddress) + PCI_DEVICE_ID_OFFSET);\r
\r
Handle->DebugCapabilityBase = CapabilityPointer;\r
Handle->DebugCapabilityOffset = CapabilityPointer - Handle->XhciMmioBase;\r
Handle->XhciOpRegister = Handle->XhciMmioBase + CapLength;\r
+ Handle->DebugSupport = TRUE;\r
Handle->Initialized = USB3DBG_DBG_CAB;\r
return RETURN_SUCCESS;\r
\r
Check if it needs to re-initialize usb debug port hardware.\r
\r
During different phases switch, such as SEC to PEI or PEI to DXE or DXE to SMM, we should check\r
- whether the usb debug port hardware configuration is changed. Such case can be triggerred by\r
+ whether the usb debug port hardware configuration is changed. Such case can be triggered by\r
Pci bus resource allocation and so on.\r
\r
@param Handle Debug port handle.\r
Dcctrl = XhcReadDebugReg (Handle, XHC_DC_DCCTRL);\r
if ((Dcctrl & BIT0) == 0) {\r
Result = TRUE;\r
+ } else if (!Handle->Ready) {\r
+ Handle->Ready = TRUE;\r
+ Handle->Initialized = USB3DBG_ENABLED;\r
}\r
\r
return Result;\r
//\r
DebugCapabilityContext->EpOutContext.CErr = 0x3;\r
DebugCapabilityContext->EpOutContext.EPType = ED_BULK_OUT;\r
- DebugCapabilityContext->EpOutContext.MaxPacketSize = 0x400;\r
+ DebugCapabilityContext->EpOutContext.MaxPacketSize = XHCI_DEBUG_DEVICE_MAX_PACKET_SIZE;\r
DebugCapabilityContext->EpOutContext.AverageTRBLength = 0x1000;\r
\r
//\r
//\r
DebugCapabilityContext->EpInContext.CErr = 0x3;\r
DebugCapabilityContext->EpInContext.EPType = ED_BULK_IN;\r
- DebugCapabilityContext->EpInContext.MaxPacketSize = 0x400;\r
+ DebugCapabilityContext->EpInContext.MaxPacketSize = XHCI_DEBUG_DEVICE_MAX_PACKET_SIZE;\r
DebugCapabilityContext->EpInContext.AverageTRBLength = 0x1000;\r
\r
//\r
}\r
\r
//\r
- // Initialize for PEI phase when AllocatePages can work\r
+ // Initialize for PEI phase when AllocatePages can work.\r
+ // Allocate data buffer with max packet size for data read and data poll.\r
+ // Allocate data buffer for data write.\r
//\r
- Buffer = AllocateAlignBuffer (XHC_DEBUG_PORT_DATA_LENGTH);\r
+ Buffer = AllocateAlignBuffer (XHCI_DEBUG_DEVICE_MAX_PACKET_SIZE * 2 + USB3_DEBUG_PORT_WRITE_MAX_PACKET_SIZE);\r
if (Buffer == NULL) {\r
//\r
// AllocatePages can not still work now, return fail and do not initialize now.\r
}\r
\r
//\r
- // Construct the buffer for URB in and URB out\r
+ // Clear DCE bit and LSE bit in DCCTRL\r
+ //\r
+ if ((XhcReadDebugReg (Handle, XHC_DC_DCCTRL) & (BIT1|BIT31)) == (BIT1|BIT31)) {\r
+ XhcClearDebugRegBit (Handle, XHC_DC_DCCTRL, BIT1|BIT31);\r
+ }\r
+\r
+ //\r
+ // Construct the buffer for read, poll and write.\r
//\r
Handle->UrbIn.Data = (EFI_PHYSICAL_ADDRESS)(UINTN) Buffer;\r
- Handle->UrbOut.Data = (EFI_PHYSICAL_ADDRESS)(UINTN) Buffer + XHC_DEBUG_PORT_DATA_LENGTH;\r
+ Handle->Data = (EFI_PHYSICAL_ADDRESS)(UINTN) Buffer + XHCI_DEBUG_DEVICE_MAX_PACKET_SIZE;\r
+ Handle->UrbOut.Data = Handle->UrbIn.Data + XHCI_DEBUG_DEVICE_MAX_PACKET_SIZE * 2;\r
\r
//\r
// Initialize event ring\r
return Status;\r
}\r
\r
+/**\r
+ Discover and initialize usb debug port.\r
+\r
+ @param Handle Debug port handle.\r
+\r
+**/\r
+VOID\r
+DiscoverInitializeUsbDebugPort (\r
+ IN USB3_DEBUG_PORT_HANDLE *Handle\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_PHYSICAL_ADDRESS XhciMmioBase;\r
+\r
+ //\r
+ // Read 64-bit MMIO base address\r
+ //\r
+ XhciMmioBase = ProgramXhciBaseAddress ();\r
+ Handle->XhciMmioBase = XhciMmioBase;\r
+\r
+ Status = CalculateUsbDebugPortMmioBase (Handle);\r
+ if (!RETURN_ERROR (Status)) {\r
+ UpdateXhcResource (Handle, XhciMmioBase);\r
+ if (NeedReinitializeHardware (Handle)) {\r
+ InitializeUsbDebugHardware (Handle);\r
+ }\r
+ }\r
+}\r
+\r
/**\r
Read data from debug device and save the data in buffer.\r
\r
@param Handle Debug port handle.\r
@param Buffer Pointer to the data buffer to store the data read from the debug device.\r
@param NumberOfBytes Number of bytes which will be read.\r
- @param Timeout Timeout value for reading from debug device. It unit is Microsecond.\r
+ @param Timeout Timeout value for reading from debug device. Its unit is Microsecond.\r
\r
@retval 0 Read data failed, no data is to be read.\r
@retval >0 Actual number of bytes read from debug device.\r
)\r
{\r
USB3_DEBUG_PORT_HANDLE *UsbDebugPortHandle;\r
- RETURN_STATUS Status;\r
- UINTN Received;\r
- UINTN Total;\r
- UINTN Remaining;\r
UINT8 Index;\r
- UINTN Length;\r
- UINT64 Begin;\r
- UINT64 TimeoutTicker;\r
- UINT64 TimerRound;\r
- EFI_PHYSICAL_ADDRESS XhciMmioBase;\r
+ UINT8 *Data;\r
\r
- if (NumberOfBytes == 0 || Buffer == NULL) {\r
+ if (NumberOfBytes != 1 || Buffer == NULL || Timeout != 0) {\r
return 0;\r
}\r
\r
- Received = 0;\r
- Total = 0;\r
- Remaining = 0;\r
-\r
- //\r
- // If Handle is NULL, it means memory is ready for use.\r
- // Use global variable to store handle value.\r
- //\r
- if (Handle == NULL) {\r
- UsbDebugPortHandle = &mDebugCommunicationLibUsb3DebugPortHandle;\r
- } else {\r
- UsbDebugPortHandle = (USB3_DEBUG_PORT_HANDLE *)Handle;\r
- }\r
- \r
- if (UsbDebugPortHandle->Initialized == USB3DBG_NO_DBG_CAB) {\r
+ UsbDebugPortHandle = GetUsb3DebugPortInstance ();\r
+ if (UsbDebugPortHandle == NULL) {\r
return 0;\r
}\r
- \r
- XhciMmioBase = ProgramXhciBaseAddress ();\r
- UpdateXhcResource (UsbDebugPortHandle, XhciMmioBase);\r
- \r
- if (NeedReinitializeHardware(UsbDebugPortHandle)) {\r
- Status = InitializeUsbDebugHardware (UsbDebugPortHandle);\r
- if (RETURN_ERROR(Status)) {\r
- return 0;\r
- }\r
- }\r
\r
- //\r
- // First read data from buffer, then read debug port hw to get received data.\r
- //\r
- if (UsbDebugPortHandle->DataCount > 0) {\r
- if (NumberOfBytes <= UsbDebugPortHandle->DataCount) {\r
- Total = NumberOfBytes;\r
- } else {\r
- Total = UsbDebugPortHandle->DataCount;\r
- }\r
-\r
- for (Index = 0; Index < Total; Index++) {\r
- Buffer[Index] = UsbDebugPortHandle->Data[Index];\r
- }\r
-\r
- for (Index = 0; Index < UsbDebugPortHandle->DataCount - Total; Index++) {\r
- if (Total + Index >= 8) {\r
- return 0;\r
- }\r
- UsbDebugPortHandle->Data[Index] = UsbDebugPortHandle->Data[Total + Index];\r
- }\r
- UsbDebugPortHandle->DataCount = (UINT8)(UsbDebugPortHandle->DataCount - (UINT8)Total);\r
+ if (UsbDebugPortHandle->Initialized != USB3DBG_ENABLED) {\r
+ return 0;\r
}\r
\r
- //\r
- // If Timeout is equal to 0, then it means it should always wait until all data required are received.\r
- //\r
- Begin = 0;\r
- TimeoutTicker = 0; \r
- TimerRound = 0;\r
- if (Timeout != 0) {\r
- Begin = GetPerformanceCounter ();\r
- TimeoutTicker = DivU64x32 (\r
- MultU64x64 (\r
- UsbDebugPortHandle->TimerFrequency,\r
- Timeout\r
- ),\r
- 1000000u\r
- );\r
- TimerRound = DivU64x64Remainder (\r
- TimeoutTicker,\r
- DivU64x32 (UsbDebugPortHandle->TimerCycle, 2),\r
- &TimeoutTicker\r
- );\r
+ if (UsbDebugPortHandle->InNotify) {\r
+ return 0;\r
}\r
\r
- //\r
- // Read remaining data by executing one or more usb debug transfer transactions at usb debug port hw.\r
- //\r
- while (Total < NumberOfBytes) {\r
- if (Timeout != 0) {\r
- if (TimerRound == 0) {\r
- if (IsTimerTimeout (UsbDebugPortHandle, Begin, TimeoutTicker)) {\r
- //\r
- // If time out occurs.\r
- //\r
- return 0;\r
- }\r
- } else {\r
- if (IsTimerTimeout (UsbDebugPortHandle, Begin, DivU64x32 (UsbDebugPortHandle->TimerCycle, 2))) {\r
- TimerRound --;\r
- }\r
- }\r
- }\r
- Remaining = NumberOfBytes - Total;\r
- if (Remaining >= USB3_DEBUG_PORT_MAX_PACKET_SIZE) {\r
- Received = USB3_DEBUG_PORT_MAX_PACKET_SIZE;\r
- Status = XhcDataTransfer (UsbDebugPortHandle, EfiUsbDataIn, Buffer + Total, &Received, DATA_TRANSFER_READ_TIMEOUT);\r
- } else {\r
- Received = USB3_DEBUG_PORT_MAX_PACKET_SIZE;\r
- Status = XhcDataTransfer (UsbDebugPortHandle, EfiUsbDataIn, &UsbDebugPortHandle->Data[0], &Received, DATA_TRANSFER_READ_TIMEOUT);\r
- UsbDebugPortHandle->DataCount = (UINT8) Received;\r
-\r
- if (Remaining <= Received) {\r
- //\r
- // The data received are more than required\r
- //\r
- Length = (UINT8)Remaining;\r
- } else {\r
- //\r
- // The data received are less than the remaining bytes\r
- //\r
- Length = (UINT8)Received;\r
- }\r
+ Data = (UINT8 *)(UINTN)UsbDebugPortHandle->Data;\r
\r
- //\r
- // Copy required data from the data buffer to user buffer.\r
- //\r
- for (Index = 0; Index < Length; Index++) {\r
- (Buffer + Total)[Index] = UsbDebugPortHandle->Data[Index];\r
- UsbDebugPortHandle->DataCount--;\r
- }\r
+ //\r
+ // Read data from buffer\r
+ //\r
+ if (UsbDebugPortHandle->DataCount < 1) {\r
+ return 0;\r
+ } else {\r
+ *Buffer = Data[0];\r
\r
- //\r
- // reorder the data buffer to make available data arranged from the beginning of the data buffer.\r
- //\r
- for (Index = 0; Index < Received - Length; Index++) {\r
- if (Length + Index >= 8) {\r
- return 0;\r
- }\r
- UsbDebugPortHandle->Data[Index] = UsbDebugPortHandle->Data[Length + Index];\r
+ for (Index = 0; Index < UsbDebugPortHandle->DataCount - 1; Index++) {\r
+ if ((Index + 1) >= XHCI_DEBUG_DEVICE_MAX_PACKET_SIZE) {\r
+ return 0;\r
}\r
- //\r
- // fixup the real required length of data.\r
- //\r
- Received = Length;\r
+ Data[Index] = Data[Index + 1];\r
}\r
- Total += Received;\r
+ UsbDebugPortHandle->DataCount = (UINT8)(UsbDebugPortHandle->DataCount - 1);\r
+ return 1;\r
}\r
- return Total;\r
}\r
\r
/**\r
\r
@retval 0 NumberOfBytes is 0.\r
@retval >0 The number of bytes written to the debug device.\r
- If this value is less than NumberOfBytes, then the read operation failed.\r
+ If this value is less than NumberOfBytes, then the write operation failed.\r
\r
**/\r
UINTN\r
)\r
{\r
USB3_DEBUG_PORT_HANDLE *UsbDebugPortHandle;\r
- RETURN_STATUS Status;\r
UINTN Sent;\r
UINTN Total;\r
- EFI_PHYSICAL_ADDRESS XhciMmioBase;\r
- UINTN Index;\r
\r
if (NumberOfBytes == 0 || Buffer == NULL) {\r
return 0;\r
Sent = 0;\r
Total = 0;\r
\r
- //\r
- // If Handle is NULL, it means memory is ready for use.\r
- // Use global variable to store handle value.\r
- //\r
- if (Handle == NULL) {\r
- UsbDebugPortHandle = &mDebugCommunicationLibUsb3DebugPortHandle;\r
- } else {\r
- UsbDebugPortHandle = (USB3_DEBUG_PORT_HANDLE *)Handle;\r
- }\r
- \r
- if (UsbDebugPortHandle->Initialized == USB3DBG_NO_DBG_CAB) {\r
+ UsbDebugPortHandle = GetUsb3DebugPortInstance ();\r
+ if (UsbDebugPortHandle == NULL) {\r
return 0;\r
}\r
\r
- //\r
- // MMIO base address is possible to clear, set it if it is cleared. (XhciMemorySpaceClose in PchUsbCommon.c)\r
- //\r
- XhciMmioBase = ProgramXhciBaseAddress ();\r
-\r
- UpdateXhcResource (UsbDebugPortHandle, XhciMmioBase);\r
+ if (UsbDebugPortHandle->Initialized != USB3DBG_ENABLED) {\r
+ return 0;\r
+ }\r
\r
- if (NeedReinitializeHardware(UsbDebugPortHandle)) {\r
- Status = InitializeUsbDebugHardware (UsbDebugPortHandle);\r
- if (RETURN_ERROR(Status)) {\r
- return 0;\r
- }\r
+ if (UsbDebugPortHandle->InNotify) {\r
+ return 0;\r
}\r
\r
//\r
// When host is trying to send data, write will be blocked.\r
// Poll to see if there is any data sent by host at first.\r
//\r
- DebugPortPollBuffer (Handle);\r
+ DebugPortPollBuffer (UsbDebugPortHandle);\r
\r
- Index = 0;\r
while ((Total < NumberOfBytes)) {\r
- if (NumberOfBytes - Total > USB3_DEBUG_PORT_MAX_PACKET_SIZE) {\r
- Sent = USB3_DEBUG_PORT_MAX_PACKET_SIZE;\r
+ if (NumberOfBytes - Total > USB3_DEBUG_PORT_WRITE_MAX_PACKET_SIZE) {\r
+ Sent = USB3_DEBUG_PORT_WRITE_MAX_PACKET_SIZE;\r
} else {\r
Sent = (UINT8)(NumberOfBytes - Total);\r
}\r
- Status = XhcDataTransfer (UsbDebugPortHandle, EfiUsbDataOut, Buffer + Total, &Sent, DATA_TRANSFER_WRITE_TIMEOUT);\r
+ XhcDataTransfer (UsbDebugPortHandle, EfiUsbDataOut, Buffer + Total, &Sent, DATA_TRANSFER_WRITE_TIMEOUT);\r
Total += Sent;\r
}\r
\r
@param Handle Debug port handle.\r
\r
@retval TRUE Data is waiting to be read from the debug device.\r
- @retval FALSE There is no data waiting to be read from the serial device.\r
+ @retval FALSE There is no data waiting to be read from the debug device.\r
\r
**/\r
BOOLEAN\r
{\r
USB3_DEBUG_PORT_HANDLE *UsbDebugPortHandle;\r
UINTN Length;\r
- RETURN_STATUS Status;\r
- UINT8 Buffer[XHC_DEBUG_PORT_DATA_LENGTH];\r
- EFI_PHYSICAL_ADDRESS XhciMmioBase;\r
\r
- //\r
- // If Handle is NULL, it means memory is ready for use.\r
- // Use global variable to store handle value.\r
- //\r
- if (Handle == NULL) {\r
- UsbDebugPortHandle = &mDebugCommunicationLibUsb3DebugPortHandle;\r
- } else {\r
- UsbDebugPortHandle = (USB3_DEBUG_PORT_HANDLE *)Handle;\r
+ UsbDebugPortHandle = GetUsb3DebugPortInstance ();\r
+ if (UsbDebugPortHandle == NULL) {\r
+ return FALSE;\r
}\r
\r
- if (UsbDebugPortHandle->Initialized == USB3DBG_NO_DBG_CAB) {\r
- return 0;\r
+ if (UsbDebugPortHandle->Initialized != USB3DBG_ENABLED) {\r
+ return FALSE;\r
}\r
\r
- XhciMmioBase = ProgramXhciBaseAddress ();\r
- UpdateXhcResource (UsbDebugPortHandle, XhciMmioBase);\r
- \r
- if (NeedReinitializeHardware(UsbDebugPortHandle)) {\r
- Status = InitializeUsbDebugHardware(UsbDebugPortHandle);\r
- if (RETURN_ERROR(Status)) {\r
- return FALSE;\r
- }\r
+ if (UsbDebugPortHandle->InNotify) {\r
+ return FALSE;\r
}\r
- \r
+\r
//\r
// If the data buffer is not empty, then return TRUE directly.\r
// Otherwise initialize a usb read transaction and read data to internal data buffer.\r
}\r
\r
//\r
- // Read most 8-bytes data\r
+ // Read data as much as we can\r
//\r
- Length = XHC_DEBUG_PORT_DATA_LENGTH;\r
- XhcDataTransfer (Handle, EfiUsbDataIn, Buffer, &Length, DATA_TRANSFER_POLL_TIMEOUT);\r
+ Length = XHCI_DEBUG_DEVICE_MAX_PACKET_SIZE;\r
+ XhcDataTransfer (UsbDebugPortHandle, EfiUsbDataIn, (VOID *)(UINTN)UsbDebugPortHandle->Data, &Length, DATA_TRANSFER_POLL_TIMEOUT);\r
\r
- if (Length > 8) {\r
+ if (Length > XHCI_DEBUG_DEVICE_MAX_PACKET_SIZE) {\r
return FALSE;\r
}\r
\r
//\r
// Store data into internal buffer for use later\r
//\r
- CopyMem (UsbDebugPortHandle->Data, Buffer, Length);\r
UsbDebugPortHandle->DataCount = (UINT8) Length;\r
return TRUE;\r
}\r
/**\r
Initialize the debug port.\r
\r
- If Function is not NULL, Debug Communication Libary will call this function\r
+ If Function is not NULL, Debug Communication Library will call this function\r
by passing in the Context to be the first parameter. If needed, Debug Communication\r
Library will create one debug port handle to be the second argument passing in\r
calling the Function, otherwise it will pass NULL to be the second argument of\r
\r
If Function is NULL, and Context is not NULL, the Debug Communication Library could\r
a) Return the same handle as passed in (as Context parameter).\r
- b) Ignore the input Context parameter and create new hanlde to be returned.\r
+ b) Ignore the input Context parameter and create new handle to be returned.\r
\r
If parameter Function is NULL and Context is NULL, Debug Communication Library could\r
created a new handle if needed and return it, otherwise it will return NULL.\r
IN DEBUG_PORT_CONTINUE Function\r
)\r
{\r
- RETURN_STATUS Status;\r
- USB3_DEBUG_PORT_HANDLE Handle;\r
USB3_DEBUG_PORT_HANDLE *UsbDebugPortHandle;\r
- UINT64 TimerStartValue;\r
- UINT64 TimerEndValue;\r
\r
- //\r
- // Validate the PCD PcdDebugPortHandleBufferSize value \r
- //\r
- ASSERT (PcdGet16 (PcdDebugPortHandleBufferSize) == sizeof (USB3_DEBUG_PORT_HANDLE));\r
-\r
- if (Function == NULL && Context != NULL) {\r
- UsbDebugPortHandle = (USB3_DEBUG_PORT_HANDLE *)Context;\r
- } else {\r
- ZeroMem(&Handle, sizeof (USB3_DEBUG_PORT_HANDLE));\r
- UsbDebugPortHandle = &Handle;\r
- }\r
-\r
- UsbDebugPortHandle->TimerFrequency = GetPerformanceCounterProperties (\r
- &TimerStartValue,\r
- &TimerEndValue\r
- );\r
-\r
- if (TimerEndValue < TimerStartValue) {\r
- UsbDebugPortHandle->TimerCountDown = TRUE;\r
- UsbDebugPortHandle->TimerCycle = TimerStartValue - TimerEndValue;\r
- } else {\r
- UsbDebugPortHandle->TimerCountDown = FALSE;\r
- UsbDebugPortHandle->TimerCycle = TimerEndValue - TimerStartValue;\r
- } \r
-\r
- if (Function == NULL && Context != NULL) {\r
- return (DEBUG_PORT_HANDLE *) Context;\r
- }\r
- \r
- //\r
- // Read 64-bit MMIO base address\r
- //\r
- UsbDebugPortHandle->XhciMmioBase = ProgramXhciBaseAddress ();\r
-\r
- Status = CalculateUsbDebugPortMmioBase (UsbDebugPortHandle);\r
- if (RETURN_ERROR (Status)) {\r
- goto Exit;\r
+ UsbDebugPortHandle = GetUsb3DebugPortInstance ();\r
+ if (UsbDebugPortHandle == NULL) {\r
+ return NULL;\r
}\r
\r
- if (NeedReinitializeHardware(&Handle)) {\r
- Status = InitializeUsbDebugHardware (&Handle);\r
- if (RETURN_ERROR(Status)) {\r
- goto Exit;\r
- }\r
- }\r
-\r
-Exit:\r
-\r
if (Function != NULL) {\r
- Function (Context, &Handle);\r
- } else {\r
- CopyMem(&mDebugCommunicationLibUsb3DebugPortHandle, &Handle, sizeof (USB3_DEBUG_PORT_HANDLE));\r
+ Function (Context, UsbDebugPortHandle);\r
}\r
\r
- return (DEBUG_PORT_HANDLE)(UINTN)&mDebugCommunicationLibUsb3DebugPortHandle;\r
+ return (DEBUG_PORT_HANDLE)(UINTN)UsbDebugPortHandle;\r
}\r
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