[mirror_edk2.git] / MdePkg / Include / Protocol / SerialIo.h

/** @file\r
  Serial IO protocol as defined in the EFI 1.0 specification.\r
\r
  Abstraction of a basic serial device. Targeted at 16550 UART, but\r
  could be much more generic.\r
\r
  Copyright (c) 2006, 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
\r
  Module Name:  SerialIo.h\r
\r
**/\r
\r
#ifndef __SERIAL_IO_PROTOCOL_H__\r
#define __SERIAL_IO_PROTOCOL_H__\r
\r
#define EFI_SERIAL_IO_PROTOCOL_GUID \\r
  { \\r
    0xBB25CF6F, 0xF1D4, 0x11D2, {0x9A, 0x0C, 0x00, 0x90, 0x27, 0x3F, 0xC1, 0xFD } \\r
  }\r
\r
typedef struct _EFI_SERIAL_IO_PROTOCOL EFI_SERIAL_IO_PROTOCOL;\r
\r
//\r
// Serial IO Data structures\r
//\r
typedef enum {\r
  DefaultParity,\r
  NoParity,\r
  EvenParity,\r
  OddParity,\r
  MarkParity,\r
  SpaceParity\r
} EFI_PARITY_TYPE;\r
\r
typedef enum {\r
  DefaultStopBits,\r
  OneStopBit,\r
  OneFiveStopBits,\r
  TwoStopBits\r
} EFI_STOP_BITS_TYPE;\r
\r
//\r
// define for Control bits, grouped by read only, write only, and read write\r
//\r
//\r
// Read Only\r
//\r
#define EFI_SERIAL_CLEAR_TO_SEND        0x00000010\r
#define EFI_SERIAL_DATA_SET_READY       0x00000020\r
#define EFI_SERIAL_RING_INDICATE        0x00000040\r
#define EFI_SERIAL_CARRIER_DETECT       0x00000080\r
#define EFI_SERIAL_INPUT_BUFFER_EMPTY   0x00000100\r
#define EFI_SERIAL_OUTPUT_BUFFER_EMPTY  0x00000200\r
\r
//\r
// Write Only\r
//\r
#define EFI_SERIAL_REQUEST_TO_SEND      0x00000002\r
#define EFI_SERIAL_DATA_TERMINAL_READY  0x00000001\r
\r
//\r
// Read Write\r
//\r
#define EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE     0x00001000\r
#define EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE     0x00002000\r
#define EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE 0x00004000\r
\r
//\r
// Serial IO Member Functions\r
//\r
/**\r
  Reset the serial device.\r
\r
  @param  This              Protocol instance pointer.\r
                            \r
  @retval EFI_SUCCESS       The device was reset.\r
  @retval EFI_DEVICE_ERROR  The serial device could not be reset.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SERIAL_RESET) (\r
  IN EFI_SERIAL_IO_PROTOCOL *This\r
  )\r
;\r
\r
/**\r
  Sets the baud rate, receive FIFO depth, transmit/receice time out, parity, \r
  data buts, and stop bits on a serial device.\r
\r
  @param  This             Protocol instance pointer.\r
  @param  BaudRate         The requested baud rate. A BaudRate value of 0 will use the the\r
                           device's default interface speed.\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 dfault FIFO depth.\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
  @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
  @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
  @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
\r
  @retval EFI_SUCCESS      The device was reset.\r
  @retval EFI_DEVICE_ERROR The serial device could not be reset.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SERIAL_SET_ATTRIBUTES) (\r
  IN EFI_SERIAL_IO_PROTOCOL         *This,\r
  IN UINT64                         BaudRate,\r
  IN UINT32                         ReceiveFifoDepth,\r
  IN UINT32                         Timeout,\r
  IN EFI_PARITY_TYPE                Parity,\r
  IN UINT8                          DataBits,\r
  IN EFI_STOP_BITS_TYPE             StopBits\r
  )\r
;\r
\r
/**\r
  Set the control bits on a serial device\r
\r
  @param  This             Protocol instance pointer.\r
  @param  Control          Set the bits of Control that are settable.\r
\r
  @retval EFI_SUCCESS      The new control bits were set on the serial device.\r
  @retval EFI_UNSUPPORTED  The serial device does not support this operation.\r
  @retval EFI_DEVICE_ERROR The serial device is not functioning correctly.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SERIAL_SET_CONTROL_BITS) (\r
  IN EFI_SERIAL_IO_PROTOCOL         *This,\r
  IN UINT32                         Control\r
  )\r
;\r
\r
/**\r
  Retrieves the status of thecontrol bits on a serial device\r
\r
  @param  This              Protocol instance pointer.\r
  @param  Control           A pointer to return the current Control signals from the serial device.\r
                            \r
  @retval EFI_SUCCESS       The control bits were read from the serial device.\r
  @retval EFI_DEVICE_ERROR  The serial device is not functioning correctly.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SERIAL_GET_CONTROL_BITS) (\r
  IN EFI_SERIAL_IO_PROTOCOL         *This,\r
  OUT UINT32                        *Control\r
  )\r
;\r
\r
/**\r
  Writes data to a serial device.\r
\r
  @param  This              Protocol instance pointer.\r
  @param  BufferSize        On input, the size of the Buffer. On output, the amount of\r
                            data actually written.\r
  @param  Buffer            The buffer of data to write\r
\r
  @retval EFI_SUCCESS       The data was written.\r
  @retval EFI_DEVICE_ERROR  The device reported an error.\r
  @retval EFI_TIMEOUT       The data write was stopped due to a timeout.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SERIAL_WRITE) (\r
  IN EFI_SERIAL_IO_PROTOCOL         *This,\r
  IN OUT UINTN                      *BufferSize,\r
  IN VOID                           *Buffer\r
  )\r
;\r
\r
/**\r
  Writes data to a serial device.\r
\r
  @param  This              Protocol instance pointer.\r
  @param  BufferSize        On input, the size of the Buffer. On output, the amount of\r
                            data returned in Buffer.\r
  @param  Buffer            The buffer to return the data into.\r
\r
  @retval EFI_SUCCESS       The data was read.\r
  @retval EFI_DEVICE_ERROR  The device reported an error.\r
  @retval EFI_TIMEOUT       The data write was stopped due to a timeout.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SERIAL_READ) (\r
  IN EFI_SERIAL_IO_PROTOCOL         *This,\r
  IN OUT UINTN                      *BufferSize,\r
  OUT VOID                          *Buffer\r
  )\r
;\r
\r
/**\r
  The data values in SERIAL_IO_MODE are read-only and are updated by the code \r
  that produces the SERIAL_IO_PROTOCOL member functions.\r
\r
  ControlMask - A mask fo the Control bits that the device supports. The device\r
  must always support the Input Buffer Empty control bit.\r
  TimeOut  - If applicable, the number of microseconds to wait before timing out\r
  a Read or Write operation.\r
  BaudRate - If applicable, the current baud rate setting of the device; otherwise,\r
  baud rate has the value of zero to indicate that device runs at the\r
  device's designed speed.\r
  ReceiveFifoDepth - The number of characters the device will buffer on input\r
  DataBits - The number of characters the device will buffer on input\r
  Parity   - If applicable, this is the EFI_PARITY_TYPE that is computed or \r
  checked as each character is transmitted or reveived. If the device\r
  does not support parity the value is the default parity value.\r
  StopBits - If applicable, the EFI_STOP_BITS_TYPE number of stop bits per\r
  character. If the device does not support stop bits the value is\r
  the default stop bit values.\r
\r
**/\r
typedef struct {\r
  UINT32  ControlMask;\r
\r
  //\r
  // current Attributes\r
  //\r
  UINT32  Timeout;\r
  UINT64  BaudRate;\r
  UINT32  ReceiveFifoDepth;\r
  UINT32  DataBits;\r
  UINT32  Parity;\r
  UINT32  StopBits;\r
} EFI_SERIAL_IO_MODE;\r
\r
#define SERIAL_IO_INTERFACE_REVISION    0x00010000\r
#define EFI_SERIAL_IO_PROTOCOL_REVISION SERIAL_IO_INTERFACE_REVISION\r
\r
struct _EFI_SERIAL_IO_PROTOCOL {\r
  UINT32                      Revision;\r
  EFI_SERIAL_RESET            Reset;\r
  EFI_SERIAL_SET_ATTRIBUTES   SetAttributes;\r
  EFI_SERIAL_SET_CONTROL_BITS SetControl;\r
  EFI_SERIAL_GET_CONTROL_BITS GetControl;\r
  EFI_SERIAL_WRITE            Write;\r
  EFI_SERIAL_READ             Read;\r
\r
  EFI_SERIAL_IO_MODE          *Mode;\r
};\r
\r
extern EFI_GUID gEfiSerialIoProtocolGuid;\r
\r
#endif\r
Commit	Line	Data
878ddf1f	1	/** @file\r
	2	Serial IO protocol as defined in the EFI 1.0 specification.\r
	3	\r
	4	Abstraction of a basic serial device. Targeted at 16550 UART, but\r
	5	could be much more generic.\r
	6	\r
	7	Copyright (c) 2006, Intel Corporation \r
	8	All rights reserved. This program and the accompanying materials \r
	9	are licensed and made available under the terms and conditions of the BSD License \r
	10	which accompanies this distribution. The full text of the license may be found at \r
	11	http://opensource.org/licenses/bsd-license.php \r
	12	\r
	13	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
	14	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
	15	\r
	16	Module Name: SerialIo.h\r
	17	\r
	18	**/\r
	19	\r
	20	#ifndef __SERIAL_IO_PROTOCOL_H__\r
	21	#define __SERIAL_IO_PROTOCOL_H__\r
	22	\r
	23	#define EFI_SERIAL_IO_PROTOCOL_GUID \\r
	24	{ \\r
	25	0xBB25CF6F, 0xF1D4, 0x11D2, {0x9A, 0x0C, 0x00, 0x90, 0x27, 0x3F, 0xC1, 0xFD } \\r
	26	}\r
	27	\r
	28	typedef struct _EFI_SERIAL_IO_PROTOCOL EFI_SERIAL_IO_PROTOCOL;\r
	29	\r
	30	//\r
	31	// Serial IO Data structures\r
	32	//\r
	33	typedef enum {\r
	34	DefaultParity,\r
	35	NoParity,\r
	36	EvenParity,\r
	37	OddParity,\r
	38	MarkParity,\r
	39	SpaceParity\r
	40	} EFI_PARITY_TYPE;\r
	41	\r
	42	typedef enum {\r
	43	DefaultStopBits,\r
	44	OneStopBit,\r
	45	OneFiveStopBits,\r
	46	TwoStopBits\r
	47	} EFI_STOP_BITS_TYPE;\r
	48	\r
	49	//\r
	50	// define for Control bits, grouped by read only, write only, and read write\r
	51	//\r
	52	//\r
	53	// Read Only\r
	54	//\r
	55	#define EFI_SERIAL_CLEAR_TO_SEND 0x00000010\r
	56	#define EFI_SERIAL_DATA_SET_READY 0x00000020\r
	57	#define EFI_SERIAL_RING_INDICATE 0x00000040\r
	58	#define EFI_SERIAL_CARRIER_DETECT 0x00000080\r
	59	#define EFI_SERIAL_INPUT_BUFFER_EMPTY 0x00000100\r
	60	#define EFI_SERIAL_OUTPUT_BUFFER_EMPTY 0x00000200\r
	61	\r
	62	//\r
	63	// Write Only\r
	64	//\r
65	#define EFI_SERIAL_REQUEST_TO_SEND 0x00000002\r
66	#define EFI_SERIAL_DATA_TERMINAL_READY 0x00000001\r
67	\r
68	//\r
69	// Read Write\r
70	//\r
71	#define EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE 0x00001000\r
72	#define EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE 0x00002000\r
73	#define EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE 0x00004000\r
74	\r
75	//\r
76	// Serial IO Member Functions\r
77	//\r
78	/**\r
79	Reset the serial device.\r
80	\r
81	@param This Protocol instance pointer.\r
82	\r
83	@retval EFI_SUCCESS The device was reset.\r
84	@retval EFI_DEVICE_ERROR The serial device could not be reset.\r
85	\r
86	**/\r
87	typedef\r
88	EFI_STATUS\r
89	(EFIAPI *EFI_SERIAL_RESET) (\r
90	IN EFI_SERIAL_IO_PROTOCOL *This\r
91	)\r
92	;\r
93	\r
94	/**\r
95	Sets the baud rate, receive FIFO depth, transmit/receice time out, parity, \r
96	data buts, and stop bits on a serial device.\r
97	\r
98	@param This Protocol instance pointer.\r
99	@param BaudRate The requested baud rate. A BaudRate value of 0 will use the the\r
100	device's default interface speed.\r
101	@param ReveiveFifoDepth The requested depth of the FIFO on the receive side of the\r
102	serial interface. A ReceiveFifoDepth value of 0 will use\r
103	the device's dfault FIFO depth.\r
104	@param Timeout The requested time out for a single character in microseconds.\r
105	This timeout applies to both the transmit and receive side of the\r
106	interface. A Timeout value of 0 will use the device's default time\r
107	out value.\r
108	@param Parity The type of parity to use on this serial device. A Parity value of\r
109	DefaultParity will use the device's default parity value.\r
110	@param DataBits The number of data bits to use on the serial device. A DataBits\r
111	vaule of 0 will use the device's default data bit setting.\r
112	@param StopBits The number of stop bits to use on this serial device. A StopBits\r
113	value of DefaultStopBits will use the device's default number of\r
114	stop bits.\r
115	\r
116	@retval EFI_SUCCESS The device was reset.\r
117	@retval EFI_DEVICE_ERROR The serial device could not be reset.\r
118	\r
119	**/\r
120	typedef\r
121	EFI_STATUS\r
122	(EFIAPI *EFI_SERIAL_SET_ATTRIBUTES) (\r
123	IN EFI_SERIAL_IO_PROTOCOL *This,\r
124	IN UINT64 BaudRate,\r
125	IN UINT32 ReceiveFifoDepth,\r
126	IN UINT32 Timeout,\r
127	IN EFI_PARITY_TYPE Parity,\r
128	IN UINT8 DataBits,\r
129	IN EFI_STOP_BITS_TYPE StopBits\r
130	)\r
131	;\r
132	\r
133	/**\r
134	Set the control bits on a serial device\r
135	\r
136	@param This Protocol instance pointer.\r
137	@param Control Set the bits of Control that are settable.\r
138	\r
139	@retval EFI_SUCCESS The new control bits were set on the serial device.\r
140	@retval EFI_UNSUPPORTED The serial device does not support this operation.\r
141	@retval EFI_DEVICE_ERROR The serial device is not functioning correctly.\r
142	\r
143	**/\r
144	typedef\r
145	EFI_STATUS\r
146	(EFIAPI *EFI_SERIAL_SET_CONTROL_BITS) (\r
147	IN EFI_SERIAL_IO_PROTOCOL *This,\r
148	IN UINT32 Control\r
149	)\r
150	;\r
151	\r
152	/**\r
153	Retrieves the status of thecontrol bits on a serial device\r
154	\r
155	@param This Protocol instance pointer.\r
156	@param Control A pointer to return the current Control signals from the serial device.\r
157	\r
158	@retval EFI_SUCCESS The control bits were read from the serial device.\r
159	@retval EFI_DEVICE_ERROR The serial device is not functioning correctly.\r
160	\r
161	**/\r
162	typedef\r
163	EFI_STATUS\r
164	(EFIAPI *EFI_SERIAL_GET_CONTROL_BITS) (\r
165	IN EFI_SERIAL_IO_PROTOCOL *This,\r
166	OUT UINT32 *Control\r
167	)\r
168	;\r
169	\r
170	/**\r
171	Writes data to a serial device.\r
172	\r
173	@param This Protocol instance pointer.\r
174	@param BufferSize On input, the size of the Buffer. On output, the amount of\r
175	data actually written.\r
176	@param Buffer The buffer of data to write\r
177	\r
178	@retval EFI_SUCCESS The data was written.\r
179	@retval EFI_DEVICE_ERROR The device reported an error.\r
180	@retval EFI_TIMEOUT The data write was stopped due to a timeout.\r
181	\r
182	**/\r
183	typedef\r
184	EFI_STATUS\r
185	(EFIAPI *EFI_SERIAL_WRITE) (\r
186	IN EFI_SERIAL_IO_PROTOCOL *This,\r
187	IN OUT UINTN *BufferSize,\r
188	IN VOID *Buffer\r
189	)\r
190	;\r
191	\r
192	/**\r
193	Writes data to a serial device.\r
194	\r
195	@param This Protocol instance pointer.\r
196	@param BufferSize On input, the size of the Buffer. On output, the amount of\r
197	data returned in Buffer.\r
198	@param Buffer The buffer to return the data into.\r
199	\r
200	@retval EFI_SUCCESS The data was read.\r
201	@retval EFI_DEVICE_ERROR The device reported an error.\r
202	@retval EFI_TIMEOUT The data write was stopped due to a timeout.\r
203	\r
204	**/\r
205	typedef\r
206	EFI_STATUS\r
207	(EFIAPI *EFI_SERIAL_READ) (\r
208	IN EFI_SERIAL_IO_PROTOCOL *This,\r
209	IN OUT UINTN *BufferSize,\r
210	OUT VOID *Buffer\r
211	)\r
212	;\r
213	\r
214	/**\r
215	The data values in SERIAL_IO_MODE are read-only and are updated by the code \r
216	that produces the SERIAL_IO_PROTOCOL member functions.\r
217	\r
218	ControlMask - A mask fo the Control bits that the device supports. The device\r
219	must always support the Input Buffer Empty control bit.\r
220	TimeOut - If applicable, the number of microseconds to wait before timing out\r
221	a Read or Write operation.\r
222	BaudRate - If applicable, the current baud rate setting of the device; otherwise,\r
223	baud rate has the value of zero to indicate that device runs at the\r
224	device's designed speed.\r
225	ReceiveFifoDepth - The number of characters the device will buffer on input\r
226	DataBits - The number of characters the device will buffer on input\r
227	Parity - If applicable, this is the EFI_PARITY_TYPE that is computed or \r
228	checked as each character is transmitted or reveived. If the device\r
229	does not support parity the value is the default parity value.\r
230	StopBits - If applicable, the EFI_STOP_BITS_TYPE number of stop bits per\r
231	character. If the device does not support stop bits the value is\r
232	the default stop bit values.\r
233	\r
234	**/\r
235	typedef struct {\r
236	UINT32 ControlMask;\r
237	\r
238	//\r
239	// current Attributes\r
240	//\r
241	UINT32 Timeout;\r
242	UINT64 BaudRate;\r
243	UINT32 ReceiveFifoDepth;\r
244	UINT32 DataBits;\r
245	UINT32 Parity;\r
246	UINT32 StopBits;\r
247	} EFI_SERIAL_IO_MODE;\r
248	\r
249	#define SERIAL_IO_INTERFACE_REVISION 0x00010000\r
250	#define EFI_SERIAL_IO_PROTOCOL_REVISION SERIAL_IO_INTERFACE_REVISION\r
251	\r
252	struct _EFI_SERIAL_IO_PROTOCOL {\r
253	UINT32 Revision;\r
254	EFI_SERIAL_RESET Reset;\r
255	EFI_SERIAL_SET_ATTRIBUTES SetAttributes;\r
256	EFI_SERIAL_SET_CONTROL_BITS SetControl;\r
257	EFI_SERIAL_GET_CONTROL_BITS GetControl;\r
258	EFI_SERIAL_WRITE Write;\r
259	EFI_SERIAL_READ Read;\r
260	\r
261	EFI_SERIAL_IO_MODE *Mode;\r
262	};\r
263	\r
264	extern EFI_GUID gEfiSerialIoProtocolGuid;\r
265	\r
266	#endif\r