/** @file\r
- Serial I/O Port library functions definition.\r
+ This library class provides common serial I/O port functions.\r
\r
- Copyright (c) 2006 - 2008, Intel Corporation\r
- All rights reserved. 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
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2012 - 2014, ARM Ltd. All rights reserved.\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#ifndef __SERIAL_PORT_LIB__\r
#define __SERIAL_PORT_LIB__\r
\r
+#include <Uefi/UefiBaseType.h>\r
+#include <Protocol/SerialIo.h>\r
+\r
/**\r
Initialize the serial device hardware.\r
- \r
+\r
If no initialization is required, then return RETURN_SUCCESS.\r
- If the serial device was successfuly initialized, then return RETURN_SUCCESS.\r
+ If the serial device was successfully initialized, then return RETURN_SUCCESS.\r
If the serial device could not be initialized, then return RETURN_DEVICE_ERROR.\r
- \r
+\r
@retval RETURN_SUCCESS The serial device was initialized.\r
- @retval RETURN_DEVICE_ERROR The serail device could not be initialized.\r
+ @retval RETURN_DEVICE_ERROR The serial device could not be initialized.\r
\r
**/\r
RETURN_STATUS\r
);\r
\r
/**\r
- Write data from buffer to serial device. \r
- \r
- Writes NumberOfBytes data bytes from Buffer to the serial device. \r
+ Write data from buffer to serial device.\r
+\r
+ Writes NumberOfBytes data bytes from Buffer to the serial device.\r
The number of bytes actually written to the serial device is returned.\r
If the return value is less than NumberOfBytes, then the write operation failed.\r
-\r
- If Buffer is NULL, then ASSERT(). \r
-\r
+ If Buffer is NULL, then ASSERT().\r
If NumberOfBytes is zero, then return 0.\r
\r
@param Buffer Pointer to the data buffer to be written.\r
@param NumberOfBytes Number of bytes to written to the serial device.\r
\r
@retval 0 NumberOfBytes is 0.\r
- @retval >0 The number of bytes written to the serial device. \r
- If this value is less than NumberOfBytes, then the read operation failed.\r
+ @retval >0 The number of bytes written to the serial device.\r
+ If this value is less than NumberOfBytes, then the write operation failed.\r
\r
**/\r
UINTN\r
EFIAPI\r
SerialPortWrite (\r
- IN UINT8 *Buffer,\r
- IN UINTN NumberOfBytes\r
+ IN UINT8 *Buffer,\r
+ IN UINTN NumberOfBytes\r
);\r
\r
-\r
/**\r
Read data from serial device and save the datas in buffer.\r
- \r
+\r
Reads NumberOfBytes data bytes from a serial device into the buffer\r
- specified by Buffer. The number of bytes actually read is returned. \r
+ specified by Buffer. The number of bytes actually read is returned.\r
If the return value is less than NumberOfBytes, then the rest operation failed.\r
-\r
- If Buffer is NULL, then ASSERT(). \r
-\r
+ If Buffer is NULL, then ASSERT().\r
If NumberOfBytes is zero, then return 0.\r
\r
@param Buffer Pointer to the data buffer to store the data read from the serial device.\r
@param NumberOfBytes Number of bytes which will be read.\r
\r
- @retval 0 Read data failed, No data is to be read.\r
- @retval !0 Aactual number of bytes read from serial device.\r
+ @retval 0 Read data failed, no data is to be read.\r
+ @retval >0 Actual number of bytes read from serial device.\r
\r
**/\r
UINTN\r
EFIAPI\r
SerialPortRead (\r
- OUT UINT8 *Buffer,\r
- IN UINTN NumberOfBytes\r
+ OUT UINT8 *Buffer,\r
+ IN UINTN NumberOfBytes\r
);\r
\r
/**\r
- Poll the serial device to see if there is any data waiting.\r
+ Polls a serial device to see if there is any data waiting to be read.\r
\r
- If there is data waiting to be read from the serial port, then return\r
- TRUE. If there is no data waiting to be read from the serial port, then \r
- return FALSE.\r
+ Polls a serial device to see if there is any data waiting to be read.\r
+ If there is data waiting to be read from the serial device, then TRUE is returned.\r
+ If there is no data waiting to be read from the serial device, then FALSE is returned.\r
\r
- @retval TRUE Data is waiting to be read.\r
- @retval FALSE There is no data waiting to be read.\r
+ @retval TRUE Data is waiting to be read from the serial device.\r
+ @retval FALSE There is no data waiting to be read from the serial device.\r
\r
**/\r
BOOLEAN\r
VOID\r
);\r
\r
+/**\r
+ Sets the control bits on a serial device.\r
+\r
+ @param Control Sets the bits of Control that are settable.\r
+\r
+ @retval RETURN_SUCCESS The new control bits were set on the serial device.\r
+ @retval RETURN_UNSUPPORTED The serial device does not support this operation.\r
+ @retval RETURN_DEVICE_ERROR The serial device is not functioning correctly.\r
+\r
+**/\r
+RETURN_STATUS\r
+EFIAPI\r
+SerialPortSetControl (\r
+ IN UINT32 Control\r
+ );\r
+\r
+/**\r
+ Retrieve the status of the control bits on a serial device.\r
+\r
+ @param Control A pointer to return the current control signals from the serial device.\r
+\r
+ @retval RETURN_SUCCESS The control bits were read from the serial device.\r
+ @retval RETURN_UNSUPPORTED The serial device does not support this operation.\r
+ @retval RETURN_DEVICE_ERROR The serial device is not functioning correctly.\r
+\r
+**/\r
+RETURN_STATUS\r
+EFIAPI\r
+SerialPortGetControl (\r
+ OUT UINT32 *Control\r
+ );\r
+\r
+/**\r
+ Sets the baud rate, receive FIFO depth, transmit/receice time out, parity,\r
+ data bits, and stop bits on a serial device.\r
+\r
+ @param BaudRate The requested baud rate. A BaudRate value of 0 will use the\r
+ device's default interface speed.\r
+ On output, the value actually set.\r
+ @param ReveiveFifoDepth The requested depth of the FIFO on the receive side of the\r
+ serial interface. A ReceiveFifoDepth value of 0 will use\r
+ the device's default FIFO depth.\r
+ On output, the value actually set.\r
+ @param Timeout The requested time out for a single character in microseconds.\r
+ This timeout applies to both the transmit and receive side of the\r
+ interface. A Timeout value of 0 will use the device's default time\r
+ out value.\r
+ On output, the value actually set.\r
+ @param Parity The type of parity to use on this serial device. A Parity value of\r
+ DefaultParity will use the device's default parity value.\r
+ On output, the value actually set.\r
+ @param DataBits The number of data bits to use on the serial device. A DataBits\r
+ vaule of 0 will use the device's default data bit setting.\r
+ On output, the value actually set.\r
+ @param StopBits The number of stop bits to use on this serial device. A StopBits\r
+ value of DefaultStopBits will use the device's default number of\r
+ stop bits.\r
+ On output, the value actually set.\r
+\r
+ @retval RETURN_SUCCESS The new attributes were set on the serial device.\r
+ @retval RETURN_UNSUPPORTED The serial device does not support this operation.\r
+ @retval RETURN_INVALID_PARAMETER One or more of the attributes has an unsupported value.\r
+ @retval RETURN_DEVICE_ERROR The serial device is not functioning correctly.\r
+\r
+**/\r
+RETURN_STATUS\r
+EFIAPI\r
+SerialPortSetAttributes (\r
+ IN OUT UINT64 *BaudRate,\r
+ IN OUT UINT32 *ReceiveFifoDepth,\r
+ IN OUT UINT32 *Timeout,\r
+ IN OUT EFI_PARITY_TYPE *Parity,\r
+ IN OUT UINT8 *DataBits,\r
+ IN OUT EFI_STOP_BITS_TYPE *StopBits\r
+ );\r
+\r
#endif\r
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