[mirror_edk2.git] / MdePkg / Library / BaseIoLibIntrinsic / IoLibFifo.c

/** @file\r
  IoFifo read/write routines.\r
\r
  Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "BaseIoLibIntrinsicInternal.h"\r
#include "IoLibSev.h"\r
#include "IoLibTdx.h"\r
#include <Uefi/UefiBaseType.h>\r
#include <Library/TdxLib.h>\r
\r
/**\r
  Reads an 8-bit I/O port fifo into a block of memory.\r
\r
  Reads the 8-bit I/O fifo port specified by Port.\r
  The port is read Count times, and the read data is\r
  stored in the provided Buffer.\r
\r
  This function must guarantee that all I/O read and write operations are\r
  serialized.\r
\r
  If 8-bit I/O port operations are not supported, then ASSERT().\r
\r
  In TDX a serial of TdIoRead8 is invoked to read the I/O port fifo.\r
\r
  @param  Port    The I/O port to read.\r
  @param  Count   The number of times to read I/O port.\r
  @param  Buffer  The buffer to store the read data into.\r
\r
**/\r
VOID\r
EFIAPI\r
IoReadFifo8 (\r
  IN      UINTN  Port,\r
  IN      UINTN  Count,\r
  OUT     VOID   *Buffer\r
  )\r
{\r
  if (IsTdxGuest ()) {\r
    TdIoReadFifo8 (Port, Count, Buffer);\r
  } else {\r
    SevIoReadFifo8 (Port, Count, Buffer);\r
  }\r
}\r
\r
/**\r
  Writes a block of memory into an 8-bit I/O port fifo.\r
\r
  Writes the 8-bit I/O fifo port specified by Port.\r
  The port is written Count times, and the write data is\r
  retrieved from the provided Buffer.\r
\r
  This function must guarantee that all I/O write and write operations are\r
  serialized.\r
\r
  If 8-bit I/O port operations are not supported, then ASSERT().\r
\r
  In TDX a serial of TdIoWrite8 is invoked to write data to the I/O port.\r
\r
  @param  Port    The I/O port to write.\r
  @param  Count   The number of times to write I/O port.\r
  @param  Buffer  The buffer to retrieve the write data from.\r
\r
**/\r
VOID\r
EFIAPI\r
IoWriteFifo8 (\r
  IN      UINTN  Port,\r
  IN      UINTN  Count,\r
  IN      VOID   *Buffer\r
  )\r
{\r
  if (IsTdxGuest ()) {\r
    TdIoWriteFifo8 (Port, Count, Buffer);\r
  } else {\r
    SevIoWriteFifo8 (Port, Count, Buffer);\r
  }\r
}\r
\r
/**\r
  Reads a 16-bit I/O port fifo into a block of memory.\r
\r
  Reads the 16-bit I/O fifo port specified by Port.\r
  The port is read Count times, and the read data is\r
  stored in the provided Buffer.\r
\r
  This function must guarantee that all I/O read and write operations are\r
  serialized.\r
\r
  If 16-bit I/O port operations are not supported, then ASSERT().\r
\r
  In TDX a serial of TdIoRead16 is invoked to read data from the I/O port.\r
\r
  @param  Port    The I/O port to read.\r
  @param  Count   The number of times to read I/O port.\r
  @param  Buffer  The buffer to store the read data into.\r
\r
**/\r
VOID\r
EFIAPI\r
IoReadFifo16 (\r
  IN      UINTN  Port,\r
  IN      UINTN  Count,\r
  OUT     VOID   *Buffer\r
  )\r
{\r
  if (IsTdxGuest ()) {\r
    TdIoReadFifo16 (Port, Count, Buffer);\r
  } else {\r
    SevIoReadFifo16 (Port, Count, Buffer);\r
  }\r
}\r
\r
/**\r
  Writes a block of memory into a 16-bit I/O port fifo.\r
\r
  Writes the 16-bit I/O fifo port specified by Port.\r
  The port is written Count times, and the write data is\r
  retrieved from the provided Buffer.\r
\r
  This function must guarantee that all I/O write and write operations are\r
  serialized.\r
\r
  If 16-bit I/O port operations are not supported, then ASSERT().\r
\r
  In TDX a serial of TdIoWrite16 is invoked to write data to the I/O port.\r
\r
  @param  Port    The I/O port to write.\r
  @param  Count   The number of times to write I/O port.\r
  @param  Buffer  The buffer to retrieve the write data from.\r
\r
**/\r
VOID\r
EFIAPI\r
IoWriteFifo16 (\r
  IN      UINTN  Port,\r
  IN      UINTN  Count,\r
  IN      VOID   *Buffer\r
  )\r
{\r
  if (IsTdxGuest ()) {\r
    TdIoWriteFifo16 (Port, Count, Buffer);\r
  } else {\r
    SevIoWriteFifo16 (Port, Count, Buffer);\r
  }\r
}\r
\r
/**\r
  Reads a 32-bit I/O port fifo into a block of memory.\r
\r
  Reads the 32-bit I/O fifo port specified by Port.\r
  The port is read Count times, and the read data is\r
  stored in the provided Buffer.\r
\r
  This function must guarantee that all I/O read and write operations are\r
  serialized.\r
\r
  If 32-bit I/O port operations are not supported, then ASSERT().\r
\r
  In TDX a serial of TdIoRead32 is invoked to read data from the I/O port.\r
\r
  @param  Port    The I/O port to read.\r
  @param  Count   The number of times to read I/O port.\r
  @param  Buffer  The buffer to store the read data into.\r
\r
**/\r
VOID\r
EFIAPI\r
IoReadFifo32 (\r
  IN      UINTN  Port,\r
  IN      UINTN  Count,\r
  OUT     VOID   *Buffer\r
  )\r
{\r
  if (IsTdxGuest ()) {\r
    TdIoReadFifo32 (Port, Count, Buffer);\r
  } else {\r
    SevIoReadFifo32 (Port, Count, Buffer);\r
  }\r
}\r
\r
/**\r
  Writes a block of memory into a 32-bit I/O port fifo.\r
\r
  Writes the 32-bit I/O fifo port specified by Port.\r
  The port is written Count times, and the write data is\r
  retrieved from the provided Buffer.\r
\r
  This function must guarantee that all I/O write and write operations are\r
  serialized.\r
\r
  If 32-bit I/O port operations are not supported, then ASSERT().\r
\r
  In TDX a serial of TdIoWrite32 is invoked to write data to the I/O port.\r
\r
  @param  Port    The I/O port to write.\r
  @param  Count   The number of times to write I/O port.\r
  @param  Buffer  The buffer to retrieve the write data from.\r
\r
**/\r
VOID\r
EFIAPI\r
IoWriteFifo32 (\r
  IN      UINTN  Port,\r
  IN      UINTN  Count,\r
  IN      VOID   *Buffer\r
  )\r
{\r
  if (IsTdxGuest ()) {\r
    TdIoWriteFifo32 (Port, Count, Buffer);\r
  } else {\r
    SevIoWriteFifo32 (Port, Count, Buffer);\r
  }\r
}\r
Commit	Line	Data
d74e9326 MX	1	/** @file\r
	2	IoFifo read/write routines.\r
	3	\r
	4	Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>\r
	5	SPDX-License-Identifier: BSD-2-Clause-Patent\r
	6	\r
	7	**/\r
	8	\r
	9	#include "BaseIoLibIntrinsicInternal.h"\r
	10	#include "IoLibSev.h"\r
	11	#include "IoLibTdx.h"\r
	12	#include <Uefi/UefiBaseType.h>\r
	13	#include <Library/TdxLib.h>\r
	14	\r
	15	/**\r
	16	Reads an 8-bit I/O port fifo into a block of memory.\r
	17	\r
	18	Reads the 8-bit I/O fifo port specified by Port.\r
	19	The port is read Count times, and the read data is\r
	20	stored in the provided Buffer.\r
	21	\r
	22	This function must guarantee that all I/O read and write operations are\r
	23	serialized.\r
	24	\r
	25	If 8-bit I/O port operations are not supported, then ASSERT().\r
	26	\r
	27	In TDX a serial of TdIoRead8 is invoked to read the I/O port fifo.\r
	28	\r
	29	@param Port The I/O port to read.\r
	30	@param Count The number of times to read I/O port.\r
	31	@param Buffer The buffer to store the read data into.\r
	32	\r
	33	**/\r
	34	VOID\r
	35	EFIAPI\r
	36	IoReadFifo8 (\r
	37	IN UINTN Port,\r
	38	IN UINTN Count,\r
	39	OUT VOID *Buffer\r
	40	)\r
	41	{\r
	42	if (IsTdxGuest ()) {\r
	43	TdIoReadFifo8 (Port, Count, Buffer);\r
	44	} else {\r
	45	SevIoReadFifo8 (Port, Count, Buffer);\r
	46	}\r
	47	}\r
	48	\r
	49	/**\r
	50	Writes a block of memory into an 8-bit I/O port fifo.\r
	51	\r
	52	Writes the 8-bit I/O fifo port specified by Port.\r
	53	The port is written Count times, and the write data is\r
	54	retrieved from the provided Buffer.\r
	55	\r
	56	This function must guarantee that all I/O write and write operations are\r
	57	serialized.\r
	58	\r
	59	If 8-bit I/O port operations are not supported, then ASSERT().\r
	60	\r
	61	In TDX a serial of TdIoWrite8 is invoked to write data to the I/O port.\r
	62	\r
	63	@param Port The I/O port to write.\r
	64	@param Count The number of times to write I/O port.\r
65	@param Buffer The buffer to retrieve the write data from.\r
66	\r
67	**/\r
68	VOID\r
69	EFIAPI\r
70	IoWriteFifo8 (\r
71	IN UINTN Port,\r
72	IN UINTN Count,\r
73	IN VOID *Buffer\r
74	)\r
75	{\r
76	if (IsTdxGuest ()) {\r
77	TdIoWriteFifo8 (Port, Count, Buffer);\r
78	} else {\r
79	SevIoWriteFifo8 (Port, Count, Buffer);\r
80	}\r
81	}\r
82	\r
83	/**\r
84	Reads a 16-bit I/O port fifo into a block of memory.\r
85	\r
86	Reads the 16-bit I/O fifo port specified by Port.\r
87	The port is read Count times, and the read data is\r
88	stored in the provided Buffer.\r
89	\r
90	This function must guarantee that all I/O read and write operations are\r
91	serialized.\r
92	\r
93	If 16-bit I/O port operations are not supported, then ASSERT().\r
94	\r
95	In TDX a serial of TdIoRead16 is invoked to read data from the I/O port.\r
96	\r
97	@param Port The I/O port to read.\r
98	@param Count The number of times to read I/O port.\r
99	@param Buffer The buffer to store the read data into.\r
100	\r
101	**/\r
102	VOID\r
103	EFIAPI\r
104	IoReadFifo16 (\r
105	IN UINTN Port,\r
106	IN UINTN Count,\r
107	OUT VOID *Buffer\r
108	)\r
109	{\r
110	if (IsTdxGuest ()) {\r
111	TdIoReadFifo16 (Port, Count, Buffer);\r
112	} else {\r
113	SevIoReadFifo16 (Port, Count, Buffer);\r
114	}\r
115	}\r
116	\r
117	/**\r
118	Writes a block of memory into a 16-bit I/O port fifo.\r
119	\r
120	Writes the 16-bit I/O fifo port specified by Port.\r
121	The port is written Count times, and the write data is\r
122	retrieved from the provided Buffer.\r
123	\r
124	This function must guarantee that all I/O write and write operations are\r
125	serialized.\r
126	\r
127	If 16-bit I/O port operations are not supported, then ASSERT().\r
128	\r
129	In TDX a serial of TdIoWrite16 is invoked to write data to the I/O port.\r
130	\r
131	@param Port The I/O port to write.\r
132	@param Count The number of times to write I/O port.\r
133	@param Buffer The buffer to retrieve the write data from.\r
134	\r
135	**/\r
136	VOID\r
137	EFIAPI\r
138	IoWriteFifo16 (\r
139	IN UINTN Port,\r
140	IN UINTN Count,\r
141	IN VOID *Buffer\r
142	)\r
143	{\r
144	if (IsTdxGuest ()) {\r
145	TdIoWriteFifo16 (Port, Count, Buffer);\r
146	} else {\r
147	SevIoWriteFifo16 (Port, Count, Buffer);\r
148	}\r
149	}\r
150	\r
151	/**\r
152	Reads a 32-bit I/O port fifo into a block of memory.\r
153	\r
154	Reads the 32-bit I/O fifo port specified by Port.\r
155	The port is read Count times, and the read data is\r
156	stored in the provided Buffer.\r
157	\r
158	This function must guarantee that all I/O read and write operations are\r
159	serialized.\r
160	\r
161	If 32-bit I/O port operations are not supported, then ASSERT().\r
162	\r
163	In TDX a serial of TdIoRead32 is invoked to read data from the I/O port.\r
164	\r
165	@param Port The I/O port to read.\r
166	@param Count The number of times to read I/O port.\r
167	@param Buffer The buffer to store the read data into.\r
168	\r
169	**/\r
170	VOID\r
171	EFIAPI\r
172	IoReadFifo32 (\r
173	IN UINTN Port,\r
174	IN UINTN Count,\r
175	OUT VOID *Buffer\r
176	)\r
177	{\r
178	if (IsTdxGuest ()) {\r
179	TdIoReadFifo32 (Port, Count, Buffer);\r
180	} else {\r
181	SevIoReadFifo32 (Port, Count, Buffer);\r
182	}\r
183	}\r
184	\r
185	/**\r
186	Writes a block of memory into a 32-bit I/O port fifo.\r
187	\r
188	Writes the 32-bit I/O fifo port specified by Port.\r
189	The port is written Count times, and the write data is\r
190	retrieved from the provided Buffer.\r
191	\r
192	This function must guarantee that all I/O write and write operations are\r
193	serialized.\r
194	\r
195	If 32-bit I/O port operations are not supported, then ASSERT().\r
196	\r
197	In TDX a serial of TdIoWrite32 is invoked to write data to the I/O port.\r
198	\r
199	@param Port The I/O port to write.\r
200	@param Count The number of times to write I/O port.\r
201	@param Buffer The buffer to retrieve the write data from.\r
202	\r
203	**/\r
204	VOID\r
205	EFIAPI\r
206	IoWriteFifo32 (\r
207	IN UINTN Port,\r
208	IN UINTN Count,\r
209	IN VOID *Buffer\r
210	)\r
211	{\r
212	if (IsTdxGuest ()) {\r
213	TdIoWriteFifo32 (Port, Count, Buffer);\r
214	} else {\r
215	SevIoWriteFifo32 (Port, Count, Buffer);\r
216	}\r
217	}\r