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b7c5912a | 1 | /** @file\r |
2 | I/O Library.\r | |
3 | The implementation of I/O operation for this library instance \r | |
4 | are based on EFI_CPU_IO_PROTOCOL.\r | |
5 | \r | |
19388d29 | 6 | Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>\r |
44564668 LD |
7 | Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>\r |
8 | \r | |
19388d29 | 9 | This program and the accompanying materials\r |
b7c5912a | 10 | are licensed and made available under the terms and conditions of the BSD License\r |
11 | which accompanies this distribution. The full text of the license may be found at\r | |
2fc59a00 | 12 | http://opensource.org/licenses/bsd-license.php.\r |
b7c5912a | 13 | \r |
14 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
15 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
16 | \r | |
b7c5912a | 17 | **/\r |
18 | \r | |
b7c5912a | 19 | #include "SmmCpuIoLibInternal.h"\r |
20 | \r | |
b7c5912a | 21 | /**\r |
22 | Reads registers in the EFI CPU I/O space.\r | |
23 | \r | |
24 | Reads the I/O port specified by Port with registers width specified by Width.\r | |
25 | The read value is returned. If such operations are not supported, then ASSERT().\r | |
26 | This function must guarantee that all I/O read and write operations are serialized.\r | |
27 | \r | |
28 | @param Port The base address of the I/O operation.\r | |
29 | The caller is responsible for aligning the Address if required.\r | |
30 | @param Width The width of the I/O operation.\r | |
31 | \r | |
32 | @return Data read from registers in the EFI CPU I/O space.\r | |
33 | \r | |
34 | **/\r | |
35 | UINT64\r | |
36 | EFIAPI\r | |
37 | IoReadWorker (\r | |
38 | IN UINTN Port,\r | |
39 | IN EFI_SMM_IO_WIDTH Width\r | |
40 | )\r | |
41 | {\r | |
42 | EFI_STATUS Status;\r | |
43 | UINT64 Data;\r | |
44 | \r | |
112af426 | 45 | Status = gSmst->SmmIo.Io.Read (&gSmst->SmmIo, Width, Port, 1, &Data);\r |
b7c5912a | 46 | ASSERT_EFI_ERROR (Status);\r |
47 | \r | |
48 | return Data;\r | |
49 | }\r | |
50 | \r | |
51 | /**\r | |
52 | Writes registers in the EFI CPU I/O space.\r | |
53 | \r | |
54 | Writes the I/O port specified by Port with registers width and value specified by Width\r | |
55 | and Data respectively. Data is returned. If such operations are not supported, then ASSERT().\r | |
56 | This function must guarantee that all I/O read and write operations are serialized.\r | |
57 | \r | |
58 | @param Port The base address of the I/O operation.\r | |
59 | The caller is responsible for aligning the Address if required.\r | |
60 | @param Width The width of the I/O operation.\r | |
61 | @param Data The value to write to the I/O port.\r | |
62 | \r | |
a750b4ae | 63 | @return The parameter of Data.\r |
b7c5912a | 64 | \r |
65 | **/\r | |
66 | UINT64\r | |
67 | EFIAPI\r | |
68 | IoWriteWorker (\r | |
69 | IN UINTN Port,\r | |
70 | IN EFI_SMM_IO_WIDTH Width,\r | |
71 | IN UINT64 Data\r | |
72 | )\r | |
73 | {\r | |
74 | EFI_STATUS Status;\r | |
75 | \r | |
112af426 | 76 | Status = gSmst->SmmIo.Io.Write (&gSmst->SmmIo, Width, Port, 1, &Data);\r |
b7c5912a | 77 | ASSERT_EFI_ERROR (Status);\r |
78 | \r | |
79 | return Data;\r | |
80 | }\r | |
81 | \r | |
82 | /**\r | |
83 | Reads memory-mapped registers in the EFI system memory space.\r | |
84 | \r | |
85 | Reads the MMIO registers specified by Address with registers width specified by Width.\r | |
86 | The read value is returned. If such operations are not supported, then ASSERT().\r | |
87 | This function must guarantee that all MMIO read and write operations are serialized.\r | |
88 | \r | |
89 | @param Address The MMIO register to read.\r | |
90 | The caller is responsible for aligning the Address if required.\r | |
91 | @param Width The width of the I/O operation.\r | |
92 | \r | |
93 | @return Data read from registers in the EFI system memory space.\r | |
94 | \r | |
95 | **/\r | |
96 | UINT64\r | |
97 | EFIAPI\r | |
98 | MmioReadWorker (\r | |
99 | IN UINTN Address,\r | |
100 | IN EFI_SMM_IO_WIDTH Width\r | |
101 | )\r | |
102 | {\r | |
103 | EFI_STATUS Status;\r | |
104 | UINT64 Data;\r | |
105 | \r | |
112af426 | 106 | Status = gSmst->SmmIo.Mem.Read (&gSmst->SmmIo, Width, Address, 1, &Data);\r |
b7c5912a | 107 | ASSERT_EFI_ERROR (Status);\r |
108 | \r | |
109 | return Data;\r | |
110 | }\r | |
111 | \r | |
112 | /**\r | |
113 | Writes memory-mapped registers in the EFI system memory space.\r | |
114 | \r | |
115 | Writes the MMIO registers specified by Address with registers width and value specified by Width\r | |
116 | and Data respectively. Data is returned. If such operations are not supported, then ASSERT().\r | |
117 | This function must guarantee that all MMIO read and write operations are serialized.\r | |
118 | \r | |
119 | @param Address The MMIO register to read.\r | |
120 | The caller is responsible for aligning the Address if required.\r | |
121 | @param Width The width of the I/O operation.\r | |
122 | @param Data The value to write to the I/O port.\r | |
123 | \r | |
124 | @return Data read from registers in the EFI system memory space.\r | |
125 | \r | |
126 | **/\r | |
127 | UINT64\r | |
128 | EFIAPI\r | |
129 | MmioWriteWorker (\r | |
130 | IN UINTN Address,\r | |
131 | IN EFI_SMM_IO_WIDTH Width,\r | |
132 | IN UINT64 Data\r | |
133 | )\r | |
134 | {\r | |
135 | EFI_STATUS Status;\r | |
136 | \r | |
112af426 | 137 | Status = gSmst->SmmIo.Mem.Write (&gSmst->SmmIo, Width, Address, 1, &Data);\r |
b7c5912a | 138 | ASSERT_EFI_ERROR (Status);\r |
139 | \r | |
140 | return Data;\r | |
141 | }\r | |
142 | \r | |
143 | /**\r | |
144 | Reads an 8-bit I/O port.\r | |
145 | \r | |
146 | Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned.\r | |
147 | This function must guarantee that all I/O read and write operations are\r | |
148 | serialized.\r | |
149 | \r | |
150 | If 8-bit I/O port operations are not supported, then ASSERT().\r | |
151 | \r | |
152 | @param Port The I/O port to read.\r | |
153 | \r | |
154 | @return The value read.\r | |
155 | \r | |
156 | **/\r | |
157 | UINT8\r | |
158 | EFIAPI\r | |
159 | IoRead8 (\r | |
160 | IN UINTN Port\r | |
161 | )\r | |
162 | {\r | |
163 | return (UINT8)IoReadWorker (Port, SMM_IO_UINT8);\r | |
164 | }\r | |
165 | \r | |
166 | /**\r | |
167 | Writes an 8-bit I/O port.\r | |
168 | \r | |
169 | Writes the 8-bit I/O port specified by Port with the value specified by Value\r | |
170 | and returns Value. This function must guarantee that all I/O read and write\r | |
171 | operations are serialized.\r | |
172 | \r | |
173 | If 8-bit I/O port operations are not supported, then ASSERT().\r | |
174 | \r | |
175 | @param Port The I/O port to write.\r | |
176 | @param Value The value to write to the I/O port.\r | |
177 | \r | |
178 | @return The value written the I/O port.\r | |
179 | \r | |
180 | **/\r | |
181 | UINT8\r | |
182 | EFIAPI\r | |
183 | IoWrite8 (\r | |
184 | IN UINTN Port,\r | |
185 | IN UINT8 Value\r | |
186 | )\r | |
187 | {\r | |
188 | return (UINT8)IoWriteWorker (Port, SMM_IO_UINT8, Value);\r | |
189 | }\r | |
190 | \r | |
191 | /**\r | |
192 | Reads a 16-bit I/O port.\r | |
193 | \r | |
194 | Reads the 16-bit I/O port specified by Port. The 16-bit read value is returned.\r | |
195 | This function must guarantee that all I/O read and write operations are\r | |
196 | serialized.\r | |
197 | \r | |
198 | If Port is not aligned on a 16-bit boundary, then ASSERT().\r | |
199 | \r | |
200 | If 16-bit I/O port operations are not supported, then ASSERT().\r | |
201 | \r | |
202 | @param Port The I/O port to read.\r | |
203 | \r | |
204 | @return The value read.\r | |
205 | \r | |
206 | **/\r | |
207 | UINT16\r | |
208 | EFIAPI\r | |
209 | IoRead16 (\r | |
210 | IN UINTN Port\r | |
211 | )\r | |
212 | {\r | |
213 | //\r | |
214 | // Make sure Port is aligned on a 16-bit boundary.\r | |
215 | //\r | |
216 | ASSERT ((Port & 1) == 0);\r | |
217 | return (UINT16)IoReadWorker (Port, SMM_IO_UINT16);\r | |
218 | }\r | |
219 | \r | |
220 | /**\r | |
221 | Writes a 16-bit I/O port.\r | |
222 | \r | |
223 | Writes the 16-bit I/O port specified by Port with the value specified by Value\r | |
224 | and returns Value. This function must guarantee that all I/O read and write\r | |
225 | operations are serialized.\r | |
226 | \r | |
227 | If Port is not aligned on a 16-bit boundary, then ASSERT().\r | |
228 | \r | |
229 | If 16-bit I/O port operations are not supported, then ASSERT().\r | |
230 | \r | |
231 | @param Port The I/O port to write.\r | |
232 | @param Value The value to write to the I/O port.\r | |
233 | \r | |
234 | @return The value written the I/O port.\r | |
235 | \r | |
236 | **/\r | |
237 | UINT16\r | |
238 | EFIAPI\r | |
239 | IoWrite16 (\r | |
240 | IN UINTN Port,\r | |
241 | IN UINT16 Value\r | |
242 | )\r | |
243 | {\r | |
244 | //\r | |
245 | // Make sure Port is aligned on a 16-bit boundary.\r | |
246 | //\r | |
247 | ASSERT ((Port & 1) == 0);\r | |
248 | return (UINT16)IoWriteWorker (Port, SMM_IO_UINT16, Value);\r | |
249 | }\r | |
250 | \r | |
251 | /**\r | |
252 | Reads a 32-bit I/O port.\r | |
253 | \r | |
254 | Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned.\r | |
255 | This function must guarantee that all I/O read and write operations are\r | |
256 | serialized.\r | |
257 | \r | |
258 | If Port is not aligned on a 32-bit boundary, then ASSERT().\r | |
259 | \r | |
260 | If 32-bit I/O port operations are not supported, then ASSERT().\r | |
261 | \r | |
262 | @param Port The I/O port to read.\r | |
263 | \r | |
264 | @return The value read.\r | |
265 | \r | |
266 | **/\r | |
267 | UINT32\r | |
268 | EFIAPI\r | |
269 | IoRead32 (\r | |
270 | IN UINTN Port\r | |
271 | )\r | |
272 | {\r | |
273 | //\r | |
274 | // Make sure Port is aligned on a 32-bit boundary.\r | |
275 | //\r | |
276 | ASSERT ((Port & 3) == 0);\r | |
277 | return (UINT32)IoReadWorker (Port, SMM_IO_UINT32);\r | |
278 | }\r | |
279 | \r | |
280 | /**\r | |
281 | Writes a 32-bit I/O port.\r | |
282 | \r | |
283 | Writes the 32-bit I/O port specified by Port with the value specified by Value\r | |
284 | and returns Value. This function must guarantee that all I/O read and write\r | |
285 | operations are serialized.\r | |
286 | \r | |
287 | If Port is not aligned on a 32-bit boundary, then ASSERT().\r | |
288 | \r | |
289 | If 32-bit I/O port operations are not supported, then ASSERT().\r | |
290 | \r | |
291 | @param Port The I/O port to write.\r | |
292 | @param Value The value to write to the I/O port.\r | |
293 | \r | |
294 | @return The value written the I/O port.\r | |
295 | \r | |
296 | **/\r | |
297 | UINT32\r | |
298 | EFIAPI\r | |
299 | IoWrite32 (\r | |
300 | IN UINTN Port,\r | |
301 | IN UINT32 Value\r | |
302 | )\r | |
303 | {\r | |
304 | //\r | |
305 | // Make sure Port is aligned on a 32-bit boundary.\r | |
306 | //\r | |
307 | ASSERT ((Port & 3) == 0);\r | |
308 | return (UINT32)IoWriteWorker (Port, SMM_IO_UINT32, Value);\r | |
309 | }\r | |
310 | \r | |
311 | /**\r | |
312 | Reads a 64-bit I/O port.\r | |
313 | \r | |
314 | Reads the 64-bit I/O port specified by Port. The 64-bit read value is returned.\r | |
315 | This function must guarantee that all I/O read and write operations are\r | |
316 | serialized.\r | |
317 | \r | |
318 | If Port is not aligned on a 64-bit boundary, then ASSERT().\r | |
319 | \r | |
320 | If 64-bit I/O port operations are not supported, then ASSERT().\r | |
321 | \r | |
322 | @param Port The I/O port to read.\r | |
323 | \r | |
324 | @return The value read.\r | |
325 | \r | |
326 | **/\r | |
327 | UINT64\r | |
328 | EFIAPI\r | |
329 | IoRead64 (\r | |
330 | IN UINTN Port\r | |
331 | )\r | |
332 | {\r | |
333 | //\r | |
334 | // Make sure Port is aligned on a 64-bit boundary.\r | |
335 | //\r | |
336 | ASSERT ((Port & 7) == 0);\r | |
337 | return IoReadWorker (Port, SMM_IO_UINT64);\r | |
338 | }\r | |
339 | \r | |
340 | /**\r | |
341 | Writes a 64-bit I/O port.\r | |
342 | \r | |
343 | Writes the 64-bit I/O port specified by Port with the value specified by Value\r | |
344 | and returns Value. This function must guarantee that all I/O read and write\r | |
345 | operations are serialized.\r | |
346 | \r | |
347 | If Port is not aligned on a 64-bit boundary, then ASSERT().\r | |
348 | \r | |
349 | If 64-bit I/O port operations are not supported, then ASSERT().\r | |
350 | \r | |
351 | @param Port The I/O port to write.\r | |
352 | @param Value The value to write to the I/O port.\r | |
353 | \r | |
354 | @return The value written the I/O port.\r | |
355 | \r | |
356 | **/\r | |
357 | UINT64\r | |
358 | EFIAPI\r | |
359 | IoWrite64 (\r | |
360 | IN UINTN Port,\r | |
361 | IN UINT64 Value\r | |
362 | )\r | |
363 | {\r | |
364 | //\r | |
365 | // Make sure Port is aligned on a 64-bit boundary.\r | |
366 | //\r | |
367 | ASSERT ((Port & 7) == 0);\r | |
368 | return IoWriteWorker (Port, SMM_IO_UINT64, Value);\r | |
369 | }\r | |
370 | \r | |
44564668 LD |
371 | /**\r |
372 | Reads an 8-bit I/O port fifo into a block of memory.\r | |
373 | \r | |
374 | Reads the 8-bit I/O fifo port specified by Port.\r | |
375 | The port is read Count times, and the read data is\r | |
376 | stored in the provided Buffer.\r | |
377 | \r | |
378 | This function must guarantee that all I/O read and write operations are\r | |
379 | serialized.\r | |
380 | \r | |
381 | If 8-bit I/O port operations are not supported, then ASSERT().\r | |
382 | \r | |
383 | @param Port The I/O port to read.\r | |
384 | @param Count The number of times to read I/O port.\r | |
385 | @param Buffer The buffer to store the read data into.\r | |
386 | \r | |
387 | **/\r | |
388 | VOID\r | |
389 | EFIAPI\r | |
390 | IoReadFifo8 (\r | |
391 | IN UINTN Port,\r | |
392 | IN UINTN Count,\r | |
393 | OUT VOID *Buffer\r | |
394 | )\r | |
395 | {\r | |
396 | UINT8 *Buffer8;\r | |
397 | \r | |
398 | Buffer8 = (UINT8 *)Buffer;\r | |
058cd03b | 399 | while (Count-- > 0) {\r |
44564668 LD |
400 | *Buffer8++ = IoRead8 (Port);\r |
401 | }\r | |
402 | }\r | |
403 | \r | |
404 | /**\r | |
405 | Writes a block of memory into an 8-bit I/O port fifo.\r | |
406 | \r | |
407 | Writes the 8-bit I/O fifo port specified by Port.\r | |
408 | The port is written Count times, and the write data is\r | |
409 | retrieved from the provided Buffer.\r | |
410 | \r | |
411 | This function must guarantee that all I/O write and write operations are\r | |
412 | serialized.\r | |
413 | \r | |
414 | If 8-bit I/O port operations are not supported, then ASSERT().\r | |
415 | \r | |
416 | @param Port The I/O port to write.\r | |
417 | @param Count The number of times to write I/O port.\r | |
418 | @param Buffer The buffer to retrieve the write data from.\r | |
419 | \r | |
420 | **/\r | |
421 | VOID\r | |
422 | EFIAPI\r | |
423 | IoWriteFifo8 (\r | |
424 | IN UINTN Port,\r | |
425 | IN UINTN Count,\r | |
426 | IN VOID *Buffer\r | |
427 | )\r | |
428 | {\r | |
429 | UINT8 *Buffer8;\r | |
430 | \r | |
431 | Buffer8 = (UINT8 *)Buffer;\r | |
058cd03b | 432 | while (Count-- > 0) {\r |
44564668 LD |
433 | IoWrite8 (Port, *Buffer8++);\r |
434 | }\r | |
435 | }\r | |
436 | \r | |
437 | /**\r | |
438 | Reads a 16-bit I/O port fifo into a block of memory.\r | |
439 | \r | |
440 | Reads the 16-bit I/O fifo port specified by Port.\r | |
441 | The port is read Count times, and the read data is\r | |
442 | stored in the provided Buffer.\r | |
443 | \r | |
444 | This function must guarantee that all I/O read and write operations are\r | |
445 | serialized.\r | |
446 | \r | |
447 | If 16-bit I/O port operations are not supported, then ASSERT().\r | |
448 | \r | |
449 | @param Port The I/O port to read.\r | |
450 | @param Count The number of times to read I/O port.\r | |
451 | @param Buffer The buffer to store the read data into.\r | |
452 | \r | |
453 | **/\r | |
454 | VOID\r | |
455 | EFIAPI\r | |
456 | IoReadFifo16 (\r | |
457 | IN UINTN Port,\r | |
458 | IN UINTN Count,\r | |
459 | OUT VOID *Buffer\r | |
460 | )\r | |
461 | {\r | |
462 | UINT16 *Buffer16;\r | |
463 | \r | |
464 | //\r | |
465 | // Make sure Port is aligned on a 16-bit boundary.\r | |
466 | //\r | |
467 | ASSERT ((Port & 1) == 0);\r | |
468 | Buffer16 = (UINT16 *)Buffer;\r | |
058cd03b | 469 | while (Count-- > 0) {\r |
44564668 LD |
470 | *Buffer16++ = IoRead16 (Port);\r |
471 | }\r | |
472 | }\r | |
473 | \r | |
474 | /**\r | |
475 | Writes a block of memory into a 16-bit I/O port fifo.\r | |
476 | \r | |
477 | Writes the 16-bit I/O fifo port specified by Port.\r | |
478 | The port is written Count times, and the write data is\r | |
479 | retrieved from the provided Buffer.\r | |
480 | \r | |
481 | This function must guarantee that all I/O write and write operations are\r | |
482 | serialized.\r | |
483 | \r | |
484 | If 16-bit I/O port operations are not supported, then ASSERT().\r | |
485 | \r | |
486 | @param Port The I/O port to write.\r | |
487 | @param Count The number of times to write I/O port.\r | |
488 | @param Buffer The buffer to retrieve the write data from.\r | |
489 | \r | |
490 | **/\r | |
491 | VOID\r | |
492 | EFIAPI\r | |
493 | IoWriteFifo16 (\r | |
494 | IN UINTN Port,\r | |
495 | IN UINTN Count,\r | |
496 | IN VOID *Buffer\r | |
497 | )\r | |
498 | {\r | |
499 | UINT16 *Buffer16;\r | |
500 | \r | |
501 | //\r | |
502 | // Make sure Port is aligned on a 16-bit boundary.\r | |
503 | //\r | |
504 | ASSERT ((Port & 1) == 0);\r | |
505 | Buffer16 = (UINT16 *)Buffer;\r | |
058cd03b | 506 | while (Count-- > 0) {\r |
44564668 LD |
507 | IoWrite16 (Port, *Buffer16++);\r |
508 | }\r | |
509 | }\r | |
510 | \r | |
511 | /**\r | |
512 | Reads a 32-bit I/O port fifo into a block of memory.\r | |
513 | \r | |
514 | Reads the 32-bit I/O fifo port specified by Port.\r | |
515 | The port is read Count times, and the read data is\r | |
516 | stored in the provided Buffer.\r | |
517 | \r | |
518 | This function must guarantee that all I/O read and write operations are\r | |
519 | serialized.\r | |
520 | \r | |
521 | If 32-bit I/O port operations are not supported, then ASSERT().\r | |
522 | \r | |
523 | @param Port The I/O port to read.\r | |
524 | @param Count The number of times to read I/O port.\r | |
525 | @param Buffer The buffer to store the read data into.\r | |
526 | \r | |
527 | **/\r | |
528 | VOID\r | |
529 | EFIAPI\r | |
530 | IoReadFifo32 (\r | |
531 | IN UINTN Port,\r | |
532 | IN UINTN Count,\r | |
533 | OUT VOID *Buffer\r | |
534 | )\r | |
535 | {\r | |
536 | UINT32 *Buffer32;\r | |
537 | \r | |
538 | //\r | |
539 | // Make sure Port is aligned on a 32-bit boundary.\r | |
540 | //\r | |
541 | ASSERT ((Port & 3) == 0);\r | |
542 | Buffer32 = (UINT32 *)Buffer;\r | |
058cd03b | 543 | while (Count-- > 0) {\r |
44564668 LD |
544 | *Buffer32++ = IoRead32 (Port);\r |
545 | }\r | |
546 | }\r | |
547 | \r | |
548 | /**\r | |
549 | Writes a block of memory into a 32-bit I/O port fifo.\r | |
550 | \r | |
551 | Writes the 32-bit I/O fifo port specified by Port.\r | |
552 | The port is written Count times, and the write data is\r | |
553 | retrieved from the provided Buffer.\r | |
554 | \r | |
555 | This function must guarantee that all I/O write and write operations are\r | |
556 | serialized.\r | |
557 | \r | |
558 | If 32-bit I/O port operations are not supported, then ASSERT().\r | |
559 | \r | |
560 | @param Port The I/O port to write.\r | |
561 | @param Count The number of times to write I/O port.\r | |
562 | @param Buffer The buffer to retrieve the write data from.\r | |
563 | \r | |
564 | **/\r | |
565 | VOID\r | |
566 | EFIAPI\r | |
567 | IoWriteFifo32 (\r | |
568 | IN UINTN Port,\r | |
569 | IN UINTN Count,\r | |
570 | IN VOID *Buffer\r | |
571 | )\r | |
572 | {\r | |
573 | UINT32 *Buffer32;\r | |
574 | \r | |
575 | //\r | |
576 | // Make sure Port is aligned on a 32-bit boundary.\r | |
577 | //\r | |
578 | ASSERT ((Port & 3) == 0);\r | |
579 | Buffer32 = (UINT32 *)Buffer;\r | |
058cd03b | 580 | while (Count-- > 0) {\r |
44564668 LD |
581 | IoWrite32 (Port, *Buffer32++);\r |
582 | }\r | |
583 | }\r | |
584 | \r | |
b7c5912a | 585 | /**\r |
586 | Reads an 8-bit MMIO register.\r | |
587 | \r | |
588 | Reads the 8-bit MMIO register specified by Address. The 8-bit read value is\r | |
589 | returned. This function must guarantee that all MMIO read and write\r | |
590 | operations are serialized.\r | |
591 | \r | |
592 | If 8-bit MMIO register operations are not supported, then ASSERT().\r | |
593 | \r | |
594 | @param Address The MMIO register to read.\r | |
595 | \r | |
596 | @return The value read.\r | |
597 | \r | |
598 | **/\r | |
599 | UINT8\r | |
600 | EFIAPI\r | |
601 | MmioRead8 (\r | |
602 | IN UINTN Address\r | |
603 | )\r | |
604 | {\r | |
605 | return (UINT8)MmioReadWorker (Address, SMM_IO_UINT8);\r | |
606 | }\r | |
607 | \r | |
608 | /**\r | |
609 | Writes an 8-bit MMIO register.\r | |
610 | \r | |
611 | Writes the 8-bit MMIO register specified by Address with the value specified\r | |
612 | by Value and returns Value. This function must guarantee that all MMIO read\r | |
613 | and write operations are serialized.\r | |
614 | \r | |
615 | If 8-bit MMIO register operations are not supported, then ASSERT().\r | |
616 | \r | |
617 | @param Address The MMIO register to write.\r | |
618 | @param Value The value to write to the MMIO register.\r | |
619 | \r | |
620 | **/\r | |
621 | UINT8\r | |
622 | EFIAPI\r | |
623 | MmioWrite8 (\r | |
624 | IN UINTN Address,\r | |
625 | IN UINT8 Value\r | |
626 | )\r | |
627 | {\r | |
628 | return (UINT8)MmioWriteWorker (Address, SMM_IO_UINT8, Value);\r | |
629 | }\r | |
630 | \r | |
631 | /**\r | |
632 | Reads a 16-bit MMIO register.\r | |
633 | \r | |
634 | Reads the 16-bit MMIO register specified by Address. The 16-bit read value is\r | |
635 | returned. This function must guarantee that all MMIO read and write\r | |
636 | operations are serialized.\r | |
637 | \r | |
638 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r | |
639 | \r | |
640 | If 16-bit MMIO register operations are not supported, then ASSERT().\r | |
641 | \r | |
642 | @param Address The MMIO register to read.\r | |
643 | \r | |
644 | @return The value read.\r | |
645 | \r | |
646 | **/\r | |
647 | UINT16\r | |
648 | EFIAPI\r | |
649 | MmioRead16 (\r | |
650 | IN UINTN Address\r | |
651 | )\r | |
652 | {\r | |
653 | //\r | |
654 | // Make sure Address is aligned on a 16-bit boundary.\r | |
655 | //\r | |
656 | ASSERT ((Address & 1) == 0);\r | |
657 | return (UINT16)MmioReadWorker (Address, SMM_IO_UINT16);\r | |
658 | }\r | |
659 | \r | |
660 | /**\r | |
661 | Writes a 16-bit MMIO register.\r | |
662 | \r | |
663 | Writes the 16-bit MMIO register specified by Address with the value specified\r | |
664 | by Value and returns Value. This function must guarantee that all MMIO read\r | |
665 | and write operations are serialized.\r | |
666 | \r | |
667 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r | |
668 | \r | |
669 | If 16-bit MMIO register operations are not supported, then ASSERT().\r | |
670 | \r | |
671 | @param Address The MMIO register to write.\r | |
672 | @param Value The value to write to the MMIO register.\r | |
673 | \r | |
674 | **/\r | |
675 | UINT16\r | |
676 | EFIAPI\r | |
677 | MmioWrite16 (\r | |
678 | IN UINTN Address,\r | |
679 | IN UINT16 Value\r | |
680 | )\r | |
681 | {\r | |
682 | //\r | |
683 | // Make sure Address is aligned on a 16-bit boundary.\r | |
684 | //\r | |
685 | ASSERT ((Address & 1) == 0);\r | |
686 | return (UINT16)MmioWriteWorker (Address, SMM_IO_UINT16, Value);\r | |
687 | }\r | |
688 | \r | |
689 | /**\r | |
690 | Reads a 32-bit MMIO register.\r | |
691 | \r | |
692 | Reads the 32-bit MMIO register specified by Address. The 32-bit read value is\r | |
693 | returned. This function must guarantee that all MMIO read and write\r | |
694 | operations are serialized.\r | |
695 | \r | |
696 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r | |
697 | \r | |
698 | If 32-bit MMIO register operations are not supported, then ASSERT().\r | |
699 | \r | |
700 | @param Address The MMIO register to read.\r | |
701 | \r | |
702 | @return The value read.\r | |
703 | \r | |
704 | **/\r | |
705 | UINT32\r | |
706 | EFIAPI\r | |
707 | MmioRead32 (\r | |
708 | IN UINTN Address\r | |
709 | )\r | |
710 | {\r | |
711 | //\r | |
712 | // Make sure Address is aligned on a 32-bit boundary.\r | |
713 | //\r | |
714 | ASSERT ((Address & 3) == 0);\r | |
715 | return (UINT32)MmioReadWorker (Address, SMM_IO_UINT32);\r | |
716 | }\r | |
717 | \r | |
718 | /**\r | |
719 | Writes a 32-bit MMIO register.\r | |
720 | \r | |
721 | Writes the 32-bit MMIO register specified by Address with the value specified\r | |
722 | by Value and returns Value. This function must guarantee that all MMIO read\r | |
723 | and write operations are serialized.\r | |
724 | \r | |
725 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r | |
726 | \r | |
727 | If 32-bit MMIO register operations are not supported, then ASSERT().\r | |
728 | \r | |
729 | @param Address The MMIO register to write.\r | |
730 | @param Value The value to write to the MMIO register.\r | |
731 | \r | |
732 | **/\r | |
733 | UINT32\r | |
734 | EFIAPI\r | |
735 | MmioWrite32 (\r | |
736 | IN UINTN Address,\r | |
737 | IN UINT32 Value\r | |
738 | )\r | |
739 | {\r | |
740 | //\r | |
741 | // Make sure Address is aligned on a 32-bit boundary.\r | |
742 | //\r | |
743 | ASSERT ((Address & 3) == 0);\r | |
744 | return (UINT32)MmioWriteWorker (Address, SMM_IO_UINT32, Value);\r | |
745 | }\r | |
746 | \r | |
747 | /**\r | |
748 | Reads a 64-bit MMIO register.\r | |
749 | \r | |
750 | Reads the 64-bit MMIO register specified by Address. The 64-bit read value is\r | |
751 | returned. This function must guarantee that all MMIO read and write\r | |
752 | operations are serialized.\r | |
753 | \r | |
754 | If Address is not aligned on a 64-bit boundary, then ASSERT().\r | |
755 | \r | |
756 | If 64-bit MMIO register operations are not supported, then ASSERT().\r | |
757 | \r | |
758 | @param Address The MMIO register to read.\r | |
759 | \r | |
760 | @return The value read.\r | |
761 | \r | |
762 | **/\r | |
763 | UINT64\r | |
764 | EFIAPI\r | |
765 | MmioRead64 (\r | |
766 | IN UINTN Address\r | |
767 | )\r | |
768 | {\r | |
769 | //\r | |
770 | // Make sure Address is aligned on a 64-bit boundary.\r | |
771 | //\r | |
772 | ASSERT ((Address & 7) == 0);\r | |
773 | return (UINT64)MmioReadWorker (Address, SMM_IO_UINT64);\r | |
774 | }\r | |
775 | \r | |
776 | /**\r | |
777 | Writes a 64-bit MMIO register.\r | |
778 | \r | |
779 | Writes the 64-bit MMIO register specified by Address with the value specified\r | |
780 | by Value and returns Value. This function must guarantee that all MMIO read\r | |
781 | and write operations are serialized.\r | |
782 | \r | |
783 | If Address is not aligned on a 64-bit boundary, then ASSERT().\r | |
784 | \r | |
785 | If 64-bit MMIO register operations are not supported, then ASSERT().\r | |
786 | \r | |
787 | @param Address The MMIO register to write.\r | |
788 | @param Value The value to write to the MMIO register.\r | |
789 | \r | |
790 | **/\r | |
791 | UINT64\r | |
792 | EFIAPI\r | |
793 | MmioWrite64 (\r | |
794 | IN UINTN Address,\r | |
795 | IN UINT64 Value\r | |
796 | )\r | |
797 | {\r | |
798 | //\r | |
799 | // Make sure Address is aligned on a 64-bit boundary.\r | |
800 | //\r | |
801 | ASSERT ((Address & 7) == 0);\r | |
802 | return (UINT64)MmioWriteWorker (Address, SMM_IO_UINT64, Value);\r | |
803 | }\r |