/**@file\r
\r
-Copyright (c) 2006 - 2009, Intel Corporation\r
-All rights reserved. This program and the accompanying materials\r
+Copyright (c) 2006 - 2010, 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
http://opensource.org/licenses/bsd-license.php\r
//\r
UINT64 mBaudRateCurrentSupport[] = {50, 75, 110, 134, 150, 300, 600, 1200, 1800, 2000, 2400, 3600, 4800, 7200, 9600, 19200, 38400, 57600, 115200, SERIAL_PORT_MAX_BAUD_RATE + 1};\r
\r
+/**\r
+ Check the device path node whether it's the Flow Control node or not.\r
+\r
+ @param[in] FlowControl The device path node to be checked.\r
+ \r
+ @retval TRUE It's the Flow Control node.\r
+ @retval FALSE It's not.\r
+\r
+**/\r
+BOOLEAN\r
+IsUartFlowControlNode (\r
+ IN UART_FLOW_CONTROL_DEVICE_PATH *FlowControl\r
+ )\r
+{\r
+ return (BOOLEAN) (\r
+ (DevicePathType (FlowControl) == MESSAGING_DEVICE_PATH) &&\r
+ (DevicePathSubType (FlowControl) == MSG_VENDOR_DP) &&\r
+ (CompareGuid (&FlowControl->Guid, &gEfiUartDevicePathGuid))\r
+ );\r
+}\r
+\r
+/**\r
+ Check the device path node whether it contains Flow Control node or not.\r
+\r
+ @param[in] DevicePath The device path to be checked.\r
+ \r
+ @retval TRUE It contains the Flow Control node.\r
+ @retval FALSE It doesn't.\r
+\r
+**/\r
+BOOLEAN\r
+ContainsFlowControl (\r
+ IN EFI_DEVICE_PATH_PROTOCOL *DevicePath\r
+ )\r
+{\r
+ while (!IsDevicePathEnd (DevicePath)) {\r
+ if (IsUartFlowControlNode ((UART_FLOW_CONTROL_DEVICE_PATH *) DevicePath)) {\r
+ return TRUE;\r
+ }\r
+ DevicePath = NextDevicePathNode (DevicePath);\r
+ }\r
+\r
+ return FALSE;\r
+}\r
+\r
/**\r
The user Entry Point for module WinNtSerialIo. The user code starts with this function.\r
\r
// TODO: EFI_SUCCESS - add return value to function comment\r
// TODO: EFI_SUCCESS - add return value to function comment\r
{\r
- EFI_STATUS Status;\r
- EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r
- EFI_WIN_NT_IO_PROTOCOL *WinNtIo;\r
- UART_DEVICE_PATH *UartNode;\r
+ EFI_STATUS Status;\r
+ EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r
+ EFI_WIN_NT_IO_PROTOCOL *WinNtIo;\r
+ UART_DEVICE_PATH *UartNode;\r
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
+ UART_FLOW_CONTROL_DEVICE_PATH *FlowControlNode;\r
+ EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfoBuffer;\r
+ UINTN EntryCount;\r
+ UINTN Index;\r
+ BOOLEAN RemainingDevicePathContainsFlowControl; \r
\r
//\r
// Check RemainingDevicePath validation\r
if ((UartNode->DataBits >= 6) && (UartNode->DataBits <= 8) && (UartNode->StopBits == OneFiveStopBits)) {\r
goto Error;\r
}\r
+\r
+ FlowControlNode = (UART_FLOW_CONTROL_DEVICE_PATH *) NextDevicePathNode (UartNode);\r
+ if (IsUartFlowControlNode (FlowControlNode)) {\r
+ //\r
+ // If the second node is Flow Control Node,\r
+ // return error when it request other than hardware flow control.\r
+ //\r
+ if ((FlowControlNode->FlowControlMap & ~UART_FLOW_CONTROL_HARDWARE) != 0) {\r
+ goto Error;\r
+ }\r
+ }\r
}\r
}\r
\r
EFI_OPEN_PROTOCOL_BY_DRIVER\r
);\r
if (Status == EFI_ALREADY_STARTED) {\r
- return EFI_SUCCESS;\r
+ if (RemainingDevicePath == NULL || IsDevicePathEnd (RemainingDevicePath)) {\r
+ //\r
+ // If RemainingDevicePath is NULL or is the End of Device Path Node\r
+ //\r
+ return EFI_SUCCESS;\r
+ }\r
+ //\r
+ // When the driver has produced device path with flow control node but RemainingDevicePath only contains UART node,\r
+ // return unsupported, and vice versa.\r
+ //\r
+ Status = gBS->OpenProtocolInformation (\r
+ Handle,\r
+ &gEfiWinNtIoProtocolGuid,\r
+ &OpenInfoBuffer,\r
+ &EntryCount\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+\r
+ //\r
+ // See if RemainingDevicePath has a Flow Control device path node\r
+ //\r
+ RemainingDevicePathContainsFlowControl = ContainsFlowControl (RemainingDevicePath);\r
+ \r
+ for (Index = 0; Index < EntryCount; Index++) {\r
+ if ((OpenInfoBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) != 0) {\r
+ Status = gBS->OpenProtocol (\r
+ OpenInfoBuffer[Index].ControllerHandle,\r
+ &gEfiDevicePathProtocolGuid,\r
+ (VOID **) &DevicePath,\r
+ This->DriverBindingHandle,\r
+ Handle,\r
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
+ );\r
+ if (!EFI_ERROR (Status)) {\r
+ if (RemainingDevicePathContainsFlowControl ^ ContainsFlowControl (DevicePath)) {\r
+ Status = EFI_UNSUPPORTED;\r
+ }\r
+ }\r
+ break;\r
+ }\r
+ }\r
+ FreePool (OpenInfoBuffer);\r
+ return Status;\r
}\r
\r
if (EFI_ERROR (Status)) {\r
EFI_WIN_NT_IO_PROTOCOL *WinNtIo;\r
WIN_NT_SERIAL_IO_PRIVATE_DATA *Private;\r
HANDLE NtHandle;\r
- UART_DEVICE_PATH Node;\r
+ UART_DEVICE_PATH UartNode;\r
EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r
EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfoBuffer;\r
UINTN EntryCount;\r
UINTN Index;\r
EFI_SERIAL_IO_PROTOCOL *SerialIo;\r
- UART_DEVICE_PATH *UartNode;\r
+ UART_DEVICE_PATH *Uart;\r
+ UINT32 FlowControlMap;\r
+ UART_FLOW_CONTROL_DEVICE_PATH *FlowControl;\r
+ EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;\r
+ UINT32 Control;\r
\r
Private = NULL;\r
NtHandle = INVALID_HANDLE_VALUE;\r
\r
//\r
- // Grab the protocols we need\r
+ // Get the Parent Device Path\r
//\r
Status = gBS->OpenProtocol (\r
Handle,\r
\r
Status = EFI_ALREADY_STARTED;\r
for (Index = 0; Index < EntryCount; Index++) {\r
- if (OpenInfoBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) {\r
+ if ((OpenInfoBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) != 0) {\r
Status = gBS->OpenProtocol (\r
OpenInfoBuffer[Index].ControllerHandle,\r
&gEfiSerialIoProtocolGuid,\r
EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
);\r
if (!EFI_ERROR (Status)) {\r
- UartNode = (UART_DEVICE_PATH *) RemainingDevicePath;\r
+ Uart = (UART_DEVICE_PATH *) RemainingDevicePath;\r
Status = SerialIo->SetAttributes (\r
- SerialIo,\r
- UartNode->BaudRate,\r
- SerialIo->Mode->ReceiveFifoDepth,\r
- SerialIo->Mode->Timeout,\r
- (EFI_PARITY_TYPE)UartNode->Parity,\r
- UartNode->DataBits,\r
- (EFI_STOP_BITS_TYPE)UartNode->StopBits\r
- );\r
+ SerialIo,\r
+ Uart->BaudRate,\r
+ SerialIo->Mode->ReceiveFifoDepth,\r
+ SerialIo->Mode->Timeout,\r
+ (EFI_PARITY_TYPE) Uart->Parity,\r
+ Uart->DataBits,\r
+ (EFI_STOP_BITS_TYPE) Uart->StopBits\r
+ );\r
+ FlowControl = (UART_FLOW_CONTROL_DEVICE_PATH *) NextDevicePathNode (Uart);\r
+ if (!EFI_ERROR (Status) && IsUartFlowControlNode (FlowControl)) {\r
+ Status = SerialIo->GetControl (SerialIo, &Control);\r
+ if (!EFI_ERROR (Status)) {\r
+ if (FlowControl->FlowControlMap == UART_FLOW_CONTROL_HARDWARE) {\r
+ Control |= EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE;\r
+ } else {\r
+ Control &= ~EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE;\r
+ }\r
+ //\r
+ // Clear the bits that are not allowed to pass to SetControl\r
+ //\r
+ Control &= (EFI_SERIAL_REQUEST_TO_SEND | EFI_SERIAL_DATA_TERMINAL_READY |\r
+ EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE | EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE | \r
+ EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE);\r
+ Status = SerialIo->SetControl (SerialIo, Control);\r
+ }\r
+ }\r
}\r
break;\r
}\r
}\r
+\r
FreePool (OpenInfoBuffer);\r
- \r
- if (Index < EntryCount) {\r
- //\r
- // If gEfiWinNtIoProtocolGuid is opened by one child device, return\r
- //\r
- return Status;\r
- }\r
- //\r
- // If gEfiWinNtIoProtocolGuid is not opened by any child device,\r
- // go further to create child device handle based on RemainingDevicePath\r
- //\r
+ return Status;\r
}\r
\r
+ FlowControl = NULL;\r
+ FlowControlMap = 0;\r
if (RemainingDevicePath == NULL) {\r
//\r
// Build the device path by appending the UART node to the ParentDevicePath\r
// from the WinNtIo handle. The Uart setings are zero here, since\r
// SetAttribute() will update them to match the default setings.\r
//\r
- ZeroMem (&Node, sizeof (UART_DEVICE_PATH));\r
- Node.Header.Type = MESSAGING_DEVICE_PATH;\r
- Node.Header.SubType = MSG_UART_DP;\r
- SetDevicePathNodeLength ((EFI_DEVICE_PATH_PROTOCOL *) &Node, sizeof (UART_DEVICE_PATH));\r
+ ZeroMem (&UartNode, sizeof (UART_DEVICE_PATH));\r
+ UartNode.Header.Type = MESSAGING_DEVICE_PATH;\r
+ UartNode.Header.SubType = MSG_UART_DP;\r
+ SetDevicePathNodeLength ((EFI_DEVICE_PATH_PROTOCOL *) &UartNode, sizeof (UART_DEVICE_PATH));\r
\r
} else if (!IsDevicePathEnd (RemainingDevicePath)) {\r
//\r
// already checked to make sure the RemainingDevicePath contains settings\r
// that we can support.\r
//\r
- CopyMem (&Node, RemainingDevicePath, sizeof (UART_DEVICE_PATH));\r
+ CopyMem (&UartNode, RemainingDevicePath, sizeof (UART_DEVICE_PATH));\r
+ FlowControl = (UART_FLOW_CONTROL_DEVICE_PATH *) NextDevicePathNode (RemainingDevicePath);\r
+ if (IsUartFlowControlNode (FlowControl)) {\r
+ FlowControlMap = FlowControl->FlowControlMap;\r
+ } else {\r
+ FlowControl = NULL;\r
+ }\r
\r
} else {\r
//\r
\r
Private->SoftwareLoopbackEnable = FALSE;\r
Private->HardwareLoopbackEnable = FALSE;\r
- Private->HardwareFlowControl = FALSE;\r
+ Private->HardwareFlowControl = (BOOLEAN) (FlowControlMap == UART_FLOW_CONTROL_HARDWARE);\r
Private->Fifo.First = 0;\r
Private->Fifo.Last = 0;\r
Private->Fifo.Surplus = SERIAL_MAX_BUFFER_SIZE;\r
\r
- CopyMem (&Private->UartDevicePath, &Node, sizeof (UART_DEVICE_PATH));\r
+ CopyMem (&Private->UartDevicePath, &UartNode, sizeof (UART_DEVICE_PATH));\r
\r
AddUnicodeString2 (\r
"eng",\r
ParentDevicePath,\r
(EFI_DEVICE_PATH_PROTOCOL *) &Private->UartDevicePath\r
);\r
+ //\r
+ // Only produce the FlowControl node when remaining device path has it\r
+ //\r
+ if (FlowControl != NULL) {\r
+ TempDevicePath = Private->DevicePath;\r
+ if (TempDevicePath != NULL) {\r
+ Private->DevicePath = AppendDevicePathNode (\r
+ TempDevicePath,\r
+ (EFI_DEVICE_PATH_PROTOCOL *) FlowControl\r
+ );\r
+ FreePool (TempDevicePath);\r
+ }\r
+ }\r
if (Private->DevicePath == NULL) {\r
Status = EFI_OUT_OF_RESOURCES;\r
goto Error;\r
COMMTIMEOUTS PortTimeOuts;\r
DWORD ConvertedTime;\r
BOOL Result;\r
- EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;\r
+ UART_DEVICE_PATH *Uart;\r
EFI_TPL Tpl;\r
\r
Private = WIN_NT_SERIAL_IO_PRIVATE_DATA_FROM_THIS (This);\r
// we must set the default values if a null argument is passed in.\r
//\r
if (BaudRate == 0) {\r
- BaudRate = FixedPcdGet64 (PcdUartDefaultBaudRate);\r
+ BaudRate = PcdGet64 (PcdUartDefaultBaudRate);\r
}\r
\r
if (ReceiveFifoDepth == 0) {\r
}\r
\r
if (Parity == DefaultParity) {\r
- Parity = (EFI_PARITY_TYPE) (FixedPcdGet8 (PcdUartDefaultParity));\r
+ Parity = (EFI_PARITY_TYPE) (PcdGet8 (PcdUartDefaultParity));\r
}\r
\r
if (DataBits == 0) {\r
- DataBits = FixedPcdGet8 (PcdUartDefaultDataBits);\r
+ DataBits = PcdGet8 (PcdUartDefaultDataBits);\r
}\r
\r
if (StopBits == DefaultStopBits) {\r
- StopBits = (EFI_STOP_BITS_TYPE) FixedPcdGet8 (PcdUartDefaultStopBits);\r
+ StopBits = (EFI_STOP_BITS_TYPE) PcdGet8 (PcdUartDefaultStopBits);\r
}\r
\r
//\r
break;\r
}\r
}\r
- \r
+\r
if ((ReceiveFifoDepth < 1) || (ReceiveFifoDepth > SERIAL_PORT_MAX_RECEIVE_FIFO_DEPTH)) {\r
return EFI_INVALID_PARAMETER;\r
}\r
Private->UartDevicePath.Parity = (UINT8) Parity;\r
Private->UartDevicePath.StopBits = (UINT8) StopBits;\r
\r
- NewDevicePath = AppendDevicePathNode (\r
- Private->ParentDevicePath,\r
- (EFI_DEVICE_PATH_PROTOCOL *) &Private->UartDevicePath\r
- );\r
- if (NewDevicePath == NULL) {\r
- gBS->RestoreTPL (Tpl);\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
+ Status = EFI_SUCCESS;\r
if (Private->Handle != NULL) {\r
+ Uart = (UART_DEVICE_PATH *) (\r
+ (UINTN) Private->DevicePath\r
+ + GetDevicePathSize (Private->ParentDevicePath)\r
+ - END_DEVICE_PATH_LENGTH\r
+ );\r
+ CopyMem (Uart, &Private->UartDevicePath, sizeof (UART_DEVICE_PATH));\r
Status = gBS->ReinstallProtocolInterface (\r
Private->Handle,\r
&gEfiDevicePathProtocolGuid,\r
Private->DevicePath,\r
- NewDevicePath\r
+ Private->DevicePath\r
);\r
- if (EFI_ERROR (Status)) {\r
- gBS->RestoreTPL (Tpl);\r
- return Status;\r
- }\r
}\r
\r
- if (Private->DevicePath != NULL) {\r
- FreePool (Private->DevicePath);\r
- }\r
-\r
- Private->DevicePath = NewDevicePath;\r
-\r
gBS->RestoreTPL (Tpl);\r
\r
- return EFI_SUCCESS;\r
+ return Status;\r
}\r
\r
EFI_STATUS\r
BOOL Result;\r
DCB Dcb;\r
EFI_TPL Tpl;\r
+ UART_FLOW_CONTROL_DEVICE_PATH *FlowControl;\r
+ EFI_STATUS Status;\r
\r
//\r
// first determine the parameter is invalid\r
return EFI_DEVICE_ERROR;\r
}\r
\r
+ Status = EFI_SUCCESS;\r
+ if (Private->Handle != NULL) {\r
+ FlowControl = (UART_FLOW_CONTROL_DEVICE_PATH *) (\r
+ (UINTN) Private->DevicePath\r
+ + GetDevicePathSize (Private->ParentDevicePath)\r
+ - END_DEVICE_PATH_LENGTH\r
+ + sizeof (UART_DEVICE_PATH)\r
+ );\r
+ if (IsUartFlowControlNode (FlowControl) &&\r
+ ((FlowControl->FlowControlMap == UART_FLOW_CONTROL_HARDWARE) ^ Private->HardwareFlowControl)) {\r
+ //\r
+ // Flow Control setting is changed, need to reinstall device path protocol\r
+ //\r
+ FlowControl->FlowControlMap = Private->HardwareFlowControl ? UART_FLOW_CONTROL_HARDWARE : 0;\r
+ Status = gBS->ReinstallProtocolInterface (\r
+ Private->Handle,\r
+ &gEfiDevicePathProtocolGuid,\r
+ Private->DevicePath,\r
+ Private->DevicePath\r
+ );\r
+ }\r
+ }\r
+\r
gBS->RestoreTPL (Tpl);\r
\r
- return EFI_SUCCESS;\r
+ return Status;\r
}\r
\r
EFI_STATUS\r
projects / mirror_edk2.git / blobdiff