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1 | /** @file\r |
2 | I/O FIFO routines\r | |
3 | \r | |
4 | Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials are\r | |
6 | licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/ \r | |
14 | \r | |
15 | #ifndef _IO_FIFO_H_INCLUDED_\r | |
16 | #define _IO_FIFO_H_INCLUDED_\r | |
17 | \r | |
18 | /**\r | |
19 | Reads an 8-bit I/O port fifo into a block of memory.\r | |
20 | \r | |
21 | Reads the 8-bit I/O fifo port specified by Port.\r | |
22 | \r | |
23 | The port is read Count times, and the read data is\r | |
24 | stored in the provided Buffer.\r | |
25 | \r | |
26 | This function must guarantee that all I/O read and write operations are\r | |
27 | serialized.\r | |
28 | \r | |
29 | If 8-bit I/O port operations are not supported, then ASSERT().\r | |
30 | \r | |
31 | @param Port The I/O port to read.\r | |
32 | @param Count The number of times to read I/O port.\r | |
33 | @param Buffer The buffer to store the read data into.\r | |
34 | \r | |
35 | **/\r | |
36 | VOID\r | |
37 | EFIAPI\r | |
38 | IoReadFifo8 (\r | |
39 | IN UINTN Port,\r | |
40 | IN UINTN Count,\r | |
41 | OUT VOID *Buffer\r | |
42 | );\r | |
43 | \r | |
44 | /**\r | |
45 | Reads a 16-bit I/O port fifo into a block of memory.\r | |
46 | \r | |
47 | Reads the 16-bit I/O fifo port specified by Port.\r | |
48 | \r | |
49 | The port is read Count times, and the read data is\r | |
50 | stored in the provided Buffer.\r | |
51 | \r | |
52 | This function must guarantee that all I/O read and write operations are\r | |
53 | serialized.\r | |
54 | \r | |
55 | If 16-bit I/O port operations are not supported, then ASSERT().\r | |
56 | \r | |
57 | @param Port The I/O port to read.\r | |
58 | @param Count The number of times to read I/O port.\r | |
59 | @param Buffer The buffer to store the read data into.\r | |
60 | \r | |
61 | **/\r | |
62 | VOID\r | |
63 | EFIAPI\r | |
64 | IoReadFifo16 (\r | |
65 | IN UINTN Port,\r | |
66 | IN UINTN Count,\r | |
67 | OUT VOID *Buffer\r | |
68 | );\r | |
69 | \r | |
70 | /**\r | |
71 | Reads a 32-bit I/O port fifo into a block of memory.\r | |
72 | \r | |
73 | Reads the 32-bit I/O fifo port specified by Port.\r | |
74 | \r | |
75 | The port is read Count times, and the read data is\r | |
76 | stored in the provided Buffer.\r | |
77 | \r | |
78 | This function must guarantee that all I/O read and write operations are\r | |
79 | serialized.\r | |
80 | \r | |
81 | If 32-bit I/O port operations are not supported, then ASSERT().\r | |
82 | \r | |
83 | @param Port The I/O port to read.\r | |
84 | @param Count The number of times to read I/O port.\r | |
85 | @param Buffer The buffer to store the read data into.\r | |
86 | \r | |
87 | **/\r | |
88 | VOID\r | |
89 | EFIAPI\r | |
90 | IoReadFifo32 (\r | |
91 | IN UINTN Port,\r | |
92 | IN UINTN Count,\r | |
93 | OUT VOID *Buffer\r | |
94 | );\r | |
95 | \r | |
96 | /**\r | |
97 | Writes a block of memory into an 8-bit I/O port fifo.\r | |
98 | \r | |
99 | Writes the 8-bit I/O fifo port specified by Port.\r | |
100 | \r | |
101 | The port is written Count times, and the write data is\r | |
102 | retrieved from the provided Buffer.\r | |
103 | \r | |
104 | This function must guarantee that all I/O write and write operations are\r | |
105 | serialized.\r | |
106 | \r | |
107 | If 8-bit I/O port operations are not supported, then ASSERT().\r | |
108 | \r | |
109 | @param Port The I/O port to write.\r | |
110 | @param Count The number of times to write I/O port.\r | |
111 | @param Buffer The buffer to store the write data into.\r | |
112 | \r | |
113 | **/\r | |
114 | VOID\r | |
115 | EFIAPI\r | |
116 | IoWriteFifo8 (\r | |
117 | IN UINTN Port,\r | |
118 | IN UINTN Count,\r | |
119 | OUT VOID *Buffer\r | |
120 | );\r | |
121 | \r | |
122 | /**\r | |
123 | Writes a block of memory into a 16-bit I/O port fifo.\r | |
124 | \r | |
125 | Writes the 16-bit I/O fifo port specified by Port.\r | |
126 | \r | |
127 | The port is written Count times, and the write data is\r | |
128 | retrieved from the provided Buffer.\r | |
129 | \r | |
130 | This function must guarantee that all I/O write and write operations are\r | |
131 | serialized.\r | |
132 | \r | |
133 | If 16-bit I/O port operations are not supported, then ASSERT().\r | |
134 | \r | |
135 | @param Port The I/O port to write.\r | |
136 | @param Count The number of times to write I/O port.\r | |
137 | @param Buffer The buffer to store the write data into.\r | |
138 | \r | |
139 | **/\r | |
140 | VOID\r | |
141 | EFIAPI\r | |
142 | IoWriteFifo16 (\r | |
143 | IN UINTN Port,\r | |
144 | IN UINTN Count,\r | |
145 | OUT VOID *Buffer\r | |
146 | );\r | |
147 | \r | |
148 | /**\r | |
149 | Writes a block of memory into a 32-bit I/O port fifo.\r | |
150 | \r | |
151 | Writes the 32-bit I/O fifo port specified by Port.\r | |
152 | \r | |
153 | The port is written Count times, and the write data is\r | |
154 | retrieved from the provided Buffer.\r | |
155 | \r | |
156 | This function must guarantee that all I/O write and write operations are\r | |
157 | serialized.\r | |
158 | \r | |
159 | If 32-bit I/O port operations are not supported, then ASSERT().\r | |
160 | \r | |
161 | @param Port The I/O port to write.\r | |
162 | @param Count The number of times to write I/O port.\r | |
163 | @param Buffer The buffer to store the write data into.\r | |
164 | \r | |
165 | **/\r | |
166 | VOID\r | |
167 | EFIAPI\r | |
168 | IoWriteFifo32 (\r | |
169 | IN UINTN Port,\r | |
170 | IN UINTN Count,\r | |
171 | OUT VOID *Buffer\r | |
172 | );\r | |
173 | \r | |
174 | #endif\r | |
175 | \r |