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ebd04fc2 | 1 | /** @file\r |
2 | I/O Library for ARM. \r | |
3 | \r | |
4dd6f840 HT |
4 | Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>\r |
5 | Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r | |
6 | This program and the accompanying materials\r | |
ebd04fc2 | 7 | are licensed and made available under the terms and conditions of the BSD License\r |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
35a17154 | 9 | http://opensource.org/licenses/bsd-license.php.\r |
ebd04fc2 | 10 | \r |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | \r | |
17 | //\r | |
18 | // Include common header file for this module.\r | |
19 | //\r | |
20 | #include "BaseIoLibIntrinsicInternal.h"\r | |
21 | \r | |
22 | /**\r | |
23 | Reads an 8-bit I/O port.\r | |
24 | \r | |
25 | Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned.\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 | \r | |
33 | @return The value read.\r | |
34 | \r | |
35 | **/\r | |
36 | UINT8\r | |
37 | EFIAPI\r | |
38 | IoRead8 (\r | |
39 | IN UINTN Port\r | |
40 | )\r | |
41 | {\r | |
42 | ASSERT (FALSE);\r | |
43 | return 0;\r | |
44 | }\r | |
45 | \r | |
46 | /**\r | |
47 | Writes an 8-bit I/O port.\r | |
48 | \r | |
49 | Writes the 8-bit I/O port specified by Port with the value specified by Value\r | |
50 | and returns Value. This function must guarantee that all I/O read and write\r | |
51 | operations are serialized.\r | |
52 | \r | |
53 | If 8-bit I/O port operations are not supported, then ASSERT().\r | |
54 | \r | |
55 | @param Port The I/O port to write.\r | |
56 | @param Value The value to write to the I/O port.\r | |
57 | \r | |
58 | @return The value written the I/O port.\r | |
59 | \r | |
60 | **/\r | |
61 | UINT8\r | |
62 | EFIAPI\r | |
63 | IoWrite8 (\r | |
64 | IN UINTN Port,\r | |
65 | IN UINT8 Value\r | |
66 | )\r | |
67 | {\r | |
68 | ASSERT (FALSE);\r | |
69 | return Value;\r | |
70 | }\r | |
71 | \r | |
72 | /**\r | |
73 | Reads a 16-bit I/O port.\r | |
74 | \r | |
75 | Reads the 16-bit I/O port specified by Port. The 16-bit read value is returned.\r | |
76 | This function must guarantee that all I/O read and write operations are\r | |
77 | serialized.\r | |
78 | \r | |
79 | If 16-bit I/O port operations are not supported, then ASSERT().\r | |
80 | \r | |
81 | @param Port The I/O port to read.\r | |
82 | \r | |
83 | @return The value read.\r | |
84 | \r | |
85 | **/\r | |
86 | UINT16\r | |
87 | EFIAPI\r | |
88 | IoRead16 (\r | |
89 | IN UINTN Port\r | |
90 | )\r | |
91 | {\r | |
92 | ASSERT (FALSE);\r | |
93 | return 0;\r | |
94 | }\r | |
95 | \r | |
96 | /**\r | |
97 | Writes a 16-bit I/O port.\r | |
98 | \r | |
99 | Writes the 16-bit I/O port specified by Port with the value specified by Value\r | |
100 | and returns Value. This function must guarantee that all I/O read and write\r | |
101 | operations are serialized.\r | |
102 | \r | |
103 | If 16-bit I/O port operations are not supported, then ASSERT().\r | |
104 | \r | |
105 | @param Port The I/O port to write.\r | |
106 | @param Value The value to write to the I/O port.\r | |
107 | \r | |
108 | @return The value written the I/O port.\r | |
109 | \r | |
110 | **/\r | |
111 | UINT16\r | |
112 | EFIAPI\r | |
113 | IoWrite16 (\r | |
114 | IN UINTN Port,\r | |
115 | IN UINT16 Value\r | |
116 | )\r | |
117 | {\r | |
118 | ASSERT (FALSE);\r | |
119 | return Value;\r | |
120 | }\r | |
121 | \r | |
122 | /**\r | |
123 | Reads a 32-bit I/O port.\r | |
124 | \r | |
125 | Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned.\r | |
126 | This function must guarantee that all I/O read and write operations are\r | |
127 | serialized.\r | |
128 | \r | |
129 | If 32-bit I/O port operations are not supported, then ASSERT().\r | |
130 | \r | |
131 | @param Port The I/O port to read.\r | |
132 | \r | |
133 | @return The value read.\r | |
134 | \r | |
135 | **/\r | |
136 | UINT32\r | |
137 | EFIAPI\r | |
138 | IoRead32 (\r | |
139 | IN UINTN Port\r | |
140 | )\r | |
141 | {\r | |
142 | ASSERT (FALSE);\r | |
143 | return 0;\r | |
144 | }\r | |
145 | \r | |
146 | /**\r | |
147 | Writes a 32-bit I/O port.\r | |
148 | \r | |
149 | Writes the 32-bit I/O port specified by Port with the value specified by Value\r | |
150 | and returns Value. This function must guarantee that all I/O read and write\r | |
151 | operations are serialized.\r | |
152 | \r | |
153 | If 32-bit I/O port operations are not supported, then ASSERT().\r | |
154 | \r | |
155 | @param Port The I/O port to write.\r | |
156 | @param Value The value to write to the I/O port.\r | |
157 | \r | |
158 | @return The value written the I/O port.\r | |
159 | \r | |
160 | **/\r | |
161 | UINT32\r | |
162 | EFIAPI\r | |
163 | IoWrite32 (\r | |
164 | IN UINTN Port,\r | |
165 | IN UINT32 Value\r | |
166 | )\r | |
167 | {\r | |
168 | ASSERT (FALSE);\r | |
169 | return Value;\r | |
170 | }\r | |
171 | \r | |
172 | /**\r | |
173 | Reads a 64-bit I/O port.\r | |
174 | \r | |
175 | Reads the 64-bit I/O port specified by Port. The 64-bit read value is returned.\r | |
176 | This function must guarantee that all I/O read and write operations are\r | |
177 | serialized.\r | |
178 | \r | |
179 | If 64-bit I/O port operations are not supported, then ASSERT().\r | |
180 | If Port is not aligned on a 64-bit boundary, then ASSERT().\r | |
181 | \r | |
182 | @param Port The I/O port to read.\r | |
183 | \r | |
184 | @return The value read.\r | |
185 | \r | |
186 | **/\r | |
187 | UINT64\r | |
188 | EFIAPI\r | |
189 | IoRead64 (\r | |
190 | IN UINTN Port\r | |
191 | )\r | |
192 | {\r | |
193 | ASSERT (FALSE);\r | |
194 | return 0;\r | |
195 | }\r | |
196 | \r | |
197 | /**\r | |
198 | Writes a 64-bit I/O port.\r | |
199 | \r | |
200 | Writes the 64-bit I/O port specified by Port with the value specified by Value\r | |
201 | and returns Value. This function must guarantee that all I/O read and write\r | |
202 | operations are serialized.\r | |
203 | \r | |
204 | If 64-bit I/O port operations are not supported, then ASSERT().\r | |
205 | If Port is not aligned on a 64-bit boundary, then ASSERT().\r | |
206 | \r | |
207 | @param Port The I/O port to write.\r | |
208 | @param Value The value to write to the I/O port.\r | |
209 | \r | |
35a17154 | 210 | @return The value written to the I/O port.\r |
ebd04fc2 | 211 | \r |
212 | **/\r | |
213 | UINT64\r | |
214 | EFIAPI\r | |
215 | IoWrite64 (\r | |
216 | IN UINTN Port,\r | |
217 | IN UINT64 Value\r | |
218 | )\r | |
219 | {\r | |
220 | ASSERT (FALSE);\r | |
221 | return 0;\r | |
222 | }\r | |
223 | \r | |
224 | \r | |
225 | /**\r | |
226 | Reads an 8-bit MMIO register.\r | |
227 | \r | |
228 | Reads the 8-bit MMIO register specified by Address. The 8-bit read value is\r | |
229 | returned. This function must guarantee that all MMIO read and write\r | |
230 | operations are serialized.\r | |
231 | \r | |
232 | If 8-bit MMIO register operations are not supported, then ASSERT().\r | |
233 | \r | |
234 | @param Address The MMIO register to read.\r | |
235 | \r | |
236 | @return The value read.\r | |
237 | \r | |
238 | **/\r | |
239 | UINT8\r | |
240 | EFIAPI\r | |
241 | MmioRead8 (\r | |
242 | IN UINTN Address\r | |
243 | )\r | |
244 | {\r | |
245 | UINT8 Value;\r | |
246 | \r | |
247 | Value = *(volatile UINT8*)Address;\r | |
248 | return Value;\r | |
249 | }\r | |
250 | \r | |
251 | /**\r | |
252 | Writes an 8-bit MMIO register.\r | |
253 | \r | |
254 | Writes the 8-bit MMIO register specified by Address with the value specified\r | |
255 | by Value and returns Value. This function must guarantee that all MMIO read\r | |
256 | and write operations are serialized.\r | |
257 | \r | |
258 | If 8-bit MMIO register operations are not supported, then ASSERT().\r | |
259 | \r | |
260 | @param Address The MMIO register to write.\r | |
261 | @param Value The value to write to the MMIO register.\r | |
262 | \r | |
263 | **/\r | |
264 | UINT8\r | |
265 | EFIAPI\r | |
266 | MmioWrite8 (\r | |
267 | IN UINTN Address,\r | |
268 | IN UINT8 Value\r | |
269 | )\r | |
270 | {\r | |
271 | *(volatile UINT8*)Address = Value;\r | |
272 | return Value;\r | |
273 | }\r | |
274 | \r | |
275 | /**\r | |
276 | Reads a 16-bit MMIO register.\r | |
277 | \r | |
278 | Reads the 16-bit MMIO register specified by Address. The 16-bit read value is\r | |
279 | returned. This function must guarantee that all MMIO read and write\r | |
280 | operations are serialized.\r | |
281 | \r | |
282 | If 16-bit MMIO register operations are not supported, then ASSERT().\r | |
283 | \r | |
284 | @param Address The MMIO register to read.\r | |
285 | \r | |
286 | @return The value read.\r | |
287 | \r | |
288 | **/\r | |
289 | UINT16\r | |
290 | EFIAPI\r | |
291 | MmioRead16 (\r | |
292 | IN UINTN Address\r | |
293 | )\r | |
294 | {\r | |
295 | UINT16 Value;\r | |
296 | \r | |
297 | ASSERT ((Address & 1) == 0);\r | |
298 | Value = *(volatile UINT16*)Address;\r | |
299 | return Value;\r | |
300 | }\r | |
301 | \r | |
302 | /**\r | |
303 | Writes a 16-bit MMIO register.\r | |
304 | \r | |
305 | Writes the 16-bit MMIO register specified by Address with the value specified\r | |
306 | by Value and returns Value. This function must guarantee that all MMIO read\r | |
307 | and write operations are serialized.\r | |
308 | \r | |
309 | If 16-bit MMIO register operations are not supported, then ASSERT().\r | |
310 | \r | |
311 | @param Address The MMIO register to write.\r | |
312 | @param Value The value to write to the MMIO register.\r | |
313 | \r | |
314 | **/\r | |
315 | UINT16\r | |
316 | EFIAPI\r | |
317 | MmioWrite16 (\r | |
318 | IN UINTN Address,\r | |
319 | IN UINT16 Value\r | |
320 | )\r | |
321 | {\r | |
322 | ASSERT ((Address & 1) == 0);\r | |
323 | *(volatile UINT16*)Address = Value;\r | |
324 | return Value;\r | |
325 | }\r | |
326 | \r | |
327 | /**\r | |
328 | Reads a 32-bit MMIO register.\r | |
329 | \r | |
330 | Reads the 32-bit MMIO register specified by Address. The 32-bit read value is\r | |
331 | returned. This function must guarantee that all MMIO read and write\r | |
332 | operations are serialized.\r | |
333 | \r | |
334 | If 32-bit MMIO register operations are not supported, then ASSERT().\r | |
335 | \r | |
336 | @param Address The MMIO register to read.\r | |
337 | \r | |
338 | @return The value read.\r | |
339 | \r | |
340 | **/\r | |
341 | UINT32\r | |
342 | EFIAPI\r | |
343 | MmioRead32 (\r | |
344 | IN UINTN Address\r | |
345 | )\r | |
346 | {\r | |
347 | UINT32 Value;\r | |
348 | \r | |
349 | ASSERT ((Address & 3) == 0);\r | |
350 | Value = *(volatile UINT32*)Address;\r | |
351 | return Value;\r | |
352 | }\r | |
353 | \r | |
354 | /**\r | |
355 | Writes a 32-bit MMIO register.\r | |
356 | \r | |
357 | Writes the 32-bit MMIO register specified by Address with the value specified\r | |
358 | by Value and returns Value. This function must guarantee that all MMIO read\r | |
359 | and write operations are serialized.\r | |
360 | \r | |
361 | If 32-bit MMIO register operations are not supported, then ASSERT().\r | |
362 | \r | |
363 | @param Address The MMIO register to write.\r | |
364 | @param Value The value to write to the MMIO register.\r | |
365 | \r | |
366 | **/\r | |
367 | UINT32\r | |
368 | EFIAPI\r | |
369 | MmioWrite32 (\r | |
370 | IN UINTN Address,\r | |
371 | IN UINT32 Value\r | |
372 | )\r | |
373 | {\r | |
374 | ASSERT ((Address & 3) == 0);\r | |
375 | *(volatile UINT32*)Address = Value;\r | |
376 | return Value;\r | |
377 | }\r | |
378 | \r | |
379 | /**\r | |
380 | Reads a 64-bit MMIO register.\r | |
381 | \r | |
382 | Reads the 64-bit MMIO register specified by Address. The 64-bit read value is\r | |
383 | returned. This function must guarantee that all MMIO read and write\r | |
384 | operations are serialized.\r | |
385 | \r | |
386 | If 64-bit MMIO register operations are not supported, then ASSERT().\r | |
387 | \r | |
388 | @param Address The MMIO register to read.\r | |
389 | \r | |
390 | @return The value read.\r | |
391 | \r | |
392 | **/\r | |
393 | UINT64\r | |
394 | EFIAPI\r | |
395 | MmioRead64 (\r | |
396 | IN UINTN Address\r | |
397 | )\r | |
398 | {\r | |
399 | UINT64 Value;\r | |
400 | \r | |
401 | ASSERT ((Address & 7) == 0);\r | |
402 | Value = *(volatile UINT64*)Address;\r | |
403 | return Value;\r | |
404 | }\r | |
405 | \r | |
406 | /**\r | |
407 | Writes a 64-bit MMIO register.\r | |
408 | \r | |
409 | Writes the 64-bit MMIO register specified by Address with the value specified\r | |
410 | by Value and returns Value. This function must guarantee that all MMIO read\r | |
411 | and write operations are serialized.\r | |
412 | \r | |
413 | If 64-bit MMIO register operations are not supported, then ASSERT().\r | |
414 | \r | |
415 | @param Address The MMIO register to write.\r | |
416 | @param Value The value to write to the MMIO register.\r | |
417 | \r | |
418 | **/\r | |
419 | UINT64\r | |
420 | EFIAPI\r | |
421 | MmioWrite64 (\r | |
422 | IN UINTN Address,\r | |
423 | IN UINT64 Value\r | |
424 | )\r | |
425 | {\r | |
426 | ASSERT ((Address & 7) == 0);\r | |
427 | *(volatile UINT64*)Address = Value;\r | |
428 | return Value;\r | |
429 | }\r | |
430 | \r |