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11f43dfd | 1 | /** @file\r |
2 | I/O Library MMIO Buffer Functions.\r | |
4ca0802e | 3 | The implementations are based on EFI_PEI_SERVICE->CpuIo interface.\r |
11f43dfd | 4 | \r |
5 | Copyright (c) 2007, Intel Corporation<BR>\r | |
6 | All rights reserved. This program and the accompanying materials\r | |
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 | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
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 | |
c892d846 | 16 | \r |
11f43dfd | 17 | #include <PiPei.h>\r |
c892d846 | 18 | \r |
11f43dfd | 19 | #include <Library/IoLib.h>\r |
20 | #include <Library/DebugLib.h>\r | |
21 | #include <Library/BaseLib.h>\r | |
22 | #include <Library/PeiServicesTablePointerLib.h>\r | |
23 | \r | |
24 | /**\r | |
25 | Copy data from MMIO region to system memory by using 8-bit access.\r | |
26 | \r | |
27 | Copy data from MMIO region specified by starting address StartAddress \r | |
28 | to system memory specified by Buffer by using 8-bit access. The total \r | |
29 | number of byte to be copied is specified by Length. Buffer is returned.\r | |
30 | \r | |
31 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r | |
32 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
33 | \r | |
34 | \r | |
35 | @param StartAddress Starting address for the MMIO region to be copied from.\r | |
36 | @param Length Size in bytes of the copy.\r | |
37 | @param Buffer Pointer to a system memory buffer receiving the data read.\r | |
38 | \r | |
4ca0802e | 39 | @return Pointer to a system memory buffer receiving the data read.\r |
11f43dfd | 40 | \r |
41 | **/\r | |
42 | UINT8 *\r | |
43 | EFIAPI\r | |
44 | MmioReadBuffer8 (\r | |
45 | IN UINTN StartAddress,\r | |
46 | IN UINTN Length,\r | |
47 | OUT UINT8 *Buffer\r | |
48 | )\r | |
49 | {\r | |
50 | UINT8 *ReturnBuffer;\r | |
51 | \r | |
52 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
53 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN) Buffer));\r | |
54 | \r | |
55 | ReturnBuffer = Buffer;\r | |
56 | \r | |
42eedea9 | 57 | while (Length-- != 0) {\r |
11f43dfd | 58 | *(Buffer++) = MmioRead8 (StartAddress++);\r |
59 | }\r | |
60 | \r | |
61 | return ReturnBuffer;\r | |
62 | }\r | |
63 | \r | |
64 | /**\r | |
65 | Copy data from MMIO region to system memory by using 16-bit access.\r | |
66 | \r | |
67 | Copy data from MMIO region specified by starting address StartAddress \r | |
68 | to system memory specified by Buffer by using 16-bit access. The total \r | |
69 | number of byte to be copied is specified by Length. Buffer is returned.\r | |
70 | \r | |
71 | If StartAddress is not aligned on a 16-bit boundary, then ASSERT().\r | |
72 | \r | |
73 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r | |
74 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
75 | \r | |
76 | If Length is not aligned on a 16-bit boundary, then ASSERT().\r | |
77 | If Buffer is not aligned on a 16-bit boundary, then ASSERT().\r | |
78 | \r | |
79 | @param StartAddress Starting address for the MMIO region to be copied from.\r | |
80 | @param Length Size in bytes of the copy.\r | |
81 | @param Buffer Pointer to a system memory buffer receiving the data read.\r | |
82 | \r | |
4ca0802e | 83 | @return Pointer to a system memory buffer receiving the data read.\r |
11f43dfd | 84 | \r |
85 | **/\r | |
86 | UINT16 *\r | |
87 | EFIAPI\r | |
88 | MmioReadBuffer16 (\r | |
89 | IN UINTN StartAddress,\r | |
90 | IN UINTN Length,\r | |
91 | OUT UINT16 *Buffer\r | |
92 | )\r | |
93 | {\r | |
94 | UINT16 *ReturnBuffer;\r | |
95 | \r | |
96 | ASSERT ((StartAddress & (sizeof (UINT16) - 1)) == 0);\r | |
97 | \r | |
98 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
99 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN) Buffer));\r | |
100 | \r | |
101 | ASSERT ((Length & (sizeof (UINT16) - 1)) == 0);\r | |
102 | ASSERT (((UINTN) Buffer & (sizeof (UINT16) - 1)) == 0);\r | |
103 | \r | |
104 | ReturnBuffer = Buffer;\r | |
105 | \r | |
42eedea9 | 106 | while (Length != 0) {\r |
11f43dfd | 107 | *(Buffer++) = MmioRead16 (StartAddress);\r |
108 | StartAddress += sizeof (UINT16);\r | |
109 | Length -= sizeof (UINT16);\r | |
110 | }\r | |
111 | \r | |
112 | return ReturnBuffer;\r | |
113 | }\r | |
114 | \r | |
115 | /**\r | |
116 | Copy data from MMIO region to system memory by using 32-bit access.\r | |
117 | \r | |
118 | Copy data from MMIO region specified by starting address StartAddress \r | |
119 | to system memory specified by Buffer by using 32-bit access. The total \r | |
120 | number of byte to be copied is specified by Length. Buffer is returned.\r | |
121 | \r | |
122 | If StartAddress is not aligned on a 32-bit boundary, then ASSERT().\r | |
123 | \r | |
124 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r | |
125 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
126 | \r | |
127 | If Length is not aligned on a 32-bit boundary, then ASSERT().\r | |
128 | If Buffer is not aligned on a 32-bit boundary, then ASSERT().\r | |
129 | \r | |
130 | @param StartAddress Starting address for the MMIO region to be copied from.\r | |
131 | @param Length Size in bytes of the copy.\r | |
132 | @param Buffer Pointer to a system memory buffer receiving the data read.\r | |
133 | \r | |
4ca0802e | 134 | @return Pointer to a system memory buffer receiving the data read.\r |
11f43dfd | 135 | \r |
136 | **/\r | |
137 | UINT32 *\r | |
138 | EFIAPI\r | |
139 | MmioReadBuffer32 (\r | |
140 | IN UINTN StartAddress,\r | |
141 | IN UINTN Length,\r | |
142 | OUT UINT32 *Buffer\r | |
143 | )\r | |
144 | {\r | |
145 | UINT32 *ReturnBuffer;\r | |
146 | \r | |
147 | ASSERT ((StartAddress & (sizeof (UINT32) - 1)) == 0);\r | |
148 | \r | |
149 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
150 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN) Buffer));\r | |
151 | \r | |
152 | ASSERT ((Length & (sizeof (UINT32) - 1)) == 0);\r | |
153 | ASSERT (((UINTN) Buffer & (sizeof (UINT32) - 1)) == 0);\r | |
154 | \r | |
155 | ReturnBuffer = Buffer;\r | |
156 | \r | |
42eedea9 | 157 | while (Length != 0) {\r |
11f43dfd | 158 | *(Buffer++) = MmioRead32 (StartAddress);\r |
159 | StartAddress += sizeof (UINT32);\r | |
160 | Length -= sizeof (UINT32);\r | |
161 | }\r | |
162 | \r | |
163 | return ReturnBuffer;\r | |
164 | }\r | |
165 | \r | |
166 | /**\r | |
167 | Copy data from MMIO region to system memory by using 64-bit access.\r | |
168 | \r | |
169 | Copy data from MMIO region specified by starting address StartAddress \r | |
170 | to system memory specified by Buffer by using 64-bit access. The total \r | |
171 | number of byte to be copied is specified by Length. Buffer is returned.\r | |
172 | \r | |
173 | If StartAddress is not aligned on a 64-bit boundary, then ASSERT().\r | |
174 | \r | |
175 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r | |
176 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
177 | \r | |
178 | If Length is not aligned on a 64-bit boundary, then ASSERT().\r | |
179 | If Buffer is not aligned on a 64-bit boundary, then ASSERT().\r | |
180 | \r | |
181 | @param StartAddress Starting address for the MMIO region to be copied from.\r | |
182 | @param Length Size in bytes of the copy.\r | |
183 | @param Buffer Pointer to a system memory buffer receiving the data read.\r | |
184 | \r | |
4ca0802e | 185 | @return Pointer to a system memory buffer receiving the data read.\r |
11f43dfd | 186 | \r |
187 | **/\r | |
188 | UINT64 *\r | |
189 | EFIAPI\r | |
190 | MmioReadBuffer64 (\r | |
191 | IN UINTN StartAddress,\r | |
192 | IN UINTN Length,\r | |
193 | OUT UINT64 *Buffer\r | |
194 | )\r | |
195 | {\r | |
196 | UINT64 *ReturnBuffer;\r | |
197 | \r | |
198 | ASSERT ((StartAddress & (sizeof (UINT64) - 1)) == 0);\r | |
199 | \r | |
200 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
201 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN) Buffer));\r | |
202 | \r | |
203 | ASSERT ((Length & (sizeof (UINT64) - 1)) == 0);\r | |
204 | ASSERT (((UINTN) Buffer & (sizeof (UINT64) - 1)) == 0);\r | |
205 | \r | |
206 | ReturnBuffer = Buffer;\r | |
207 | \r | |
42eedea9 | 208 | while (Length != 0) {\r |
11f43dfd | 209 | *(Buffer++) = MmioRead64 (StartAddress);\r |
210 | StartAddress += sizeof (UINT64);\r | |
211 | Length -= sizeof (UINT64);\r | |
212 | }\r | |
213 | \r | |
214 | return ReturnBuffer;\r | |
215 | }\r | |
216 | \r | |
217 | \r | |
218 | /**\r | |
219 | Copy data from system memory to MMIO region by using 8-bit access.\r | |
220 | \r | |
221 | Copy data from system memory specified by Buffer to MMIO region specified \r | |
222 | by starting address StartAddress by using 8-bit access. The total number \r | |
223 | of byte to be copied is specified by Length. Buffer is returned.\r | |
224 | \r | |
225 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r | |
226 | If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r | |
227 | \r | |
228 | \r | |
229 | @param StartAddress Starting address for the MMIO region to be copied to.\r | |
4ca0802e | 230 | @param Length Size in bytes of the copy.\r |
11f43dfd | 231 | @param Buffer Pointer to a system memory buffer containing the data to write.\r |
232 | \r | |
4ca0802e | 233 | @return Pointer to a system memory buffer containing the data to write.\r |
11f43dfd | 234 | \r |
235 | **/\r | |
236 | UINT8 *\r | |
237 | EFIAPI\r | |
238 | MmioWriteBuffer8 (\r | |
239 | IN UINTN StartAddress,\r | |
240 | IN UINTN Length,\r | |
241 | IN CONST UINT8 *Buffer\r | |
242 | )\r | |
243 | {\r | |
244 | VOID* ReturnBuffer;\r | |
245 | \r | |
246 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
247 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN) Buffer));\r | |
248 | \r | |
249 | ReturnBuffer = (UINT8 *) Buffer;\r | |
250 | \r | |
42eedea9 | 251 | while (Length-- != 0) {\r |
11f43dfd | 252 | MmioWrite8 (StartAddress++, *(Buffer++));\r |
253 | }\r | |
254 | \r | |
255 | return ReturnBuffer;\r | |
256 | \r | |
257 | }\r | |
258 | \r | |
259 | /**\r | |
260 | Copy data from system memory to MMIO region by using 16-bit access.\r | |
261 | \r | |
262 | Copy data from system memory specified by Buffer to MMIO region specified \r | |
263 | by starting address StartAddress by using 16-bit access. The total number \r | |
264 | of byte to be copied is specified by Length. Length is returned.\r | |
265 | \r | |
266 | If StartAddress is not aligned on a 16-bit boundary, then ASSERT().\r | |
267 | \r | |
268 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r | |
269 | If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r | |
270 | \r | |
271 | If Length is not aligned on a 16-bit boundary, then ASSERT().\r | |
272 | \r | |
273 | If Buffer is not aligned on a 16-bit boundary, then ASSERT().\r | |
274 | \r | |
275 | @param StartAddress Starting address for the MMIO region to be copied to.\r | |
4ca0802e | 276 | @param Length Size in bytes of the copy.\r |
11f43dfd | 277 | @param Buffer Pointer to a system memory buffer containing the data to write.\r |
278 | \r | |
4ca0802e | 279 | @return Pointer to a system memory buffer containing the data to write.\r |
11f43dfd | 280 | \r |
281 | **/\r | |
282 | UINT16 *\r | |
283 | EFIAPI\r | |
284 | MmioWriteBuffer16 (\r | |
285 | IN UINTN StartAddress,\r | |
286 | IN UINTN Length,\r | |
287 | IN CONST UINT16 *Buffer\r | |
288 | )\r | |
289 | {\r | |
290 | UINT16 *ReturnBuffer;\r | |
291 | \r | |
292 | ASSERT ((StartAddress & (sizeof (UINT16) - 1)) == 0);\r | |
293 | \r | |
294 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
295 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN) Buffer));\r | |
296 | \r | |
297 | ASSERT ((Length & (sizeof (UINT16) - 1)) == 0);\r | |
298 | ASSERT (((UINTN) Buffer & (sizeof (UINT16) - 1)) == 0);\r | |
299 | \r | |
300 | ReturnBuffer = (UINT16 *) Buffer;\r | |
301 | \r | |
42eedea9 | 302 | while (Length != 0) {\r |
11f43dfd | 303 | MmioWrite16 (StartAddress, *(Buffer++));\r |
304 | \r | |
305 | StartAddress += sizeof (UINT16);\r | |
306 | Length -= sizeof (UINT16);\r | |
307 | }\r | |
308 | \r | |
309 | return ReturnBuffer;\r | |
310 | }\r | |
311 | \r | |
312 | \r | |
313 | /**\r | |
314 | Copy data from system memory to MMIO region by using 32-bit access.\r | |
315 | \r | |
316 | Copy data from system memory specified by Buffer to MMIO region specified \r | |
317 | by starting address StartAddress by using 32-bit access. The total number \r | |
318 | of byte to be copied is specified by Length. Length is returned.\r | |
319 | \r | |
320 | If StartAddress is not aligned on a 32-bit boundary, then ASSERT().\r | |
321 | \r | |
322 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r | |
323 | If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r | |
324 | \r | |
325 | If Length is not aligned on a 32-bit boundary, then ASSERT().\r | |
326 | \r | |
327 | If Buffer is not aligned on a 32-bit boundary, then ASSERT().\r | |
328 | \r | |
329 | @param StartAddress Starting address for the MMIO region to be copied to.\r | |
4ca0802e | 330 | @param Length Size in bytes of the copy.\r |
11f43dfd | 331 | @param Buffer Pointer to a system memory buffer containing the data to write.\r |
332 | \r | |
4ca0802e | 333 | @return Pointer to a system memory buffer containing the data to write.\r |
11f43dfd | 334 | \r |
335 | **/\r | |
336 | UINT32 *\r | |
337 | EFIAPI\r | |
338 | MmioWriteBuffer32 (\r | |
339 | IN UINTN StartAddress,\r | |
340 | IN UINTN Length,\r | |
341 | IN CONST UINT32 *Buffer\r | |
342 | )\r | |
343 | {\r | |
344 | UINT32 *ReturnBuffer;\r | |
345 | \r | |
346 | ASSERT ((StartAddress & (sizeof (UINT32) - 1)) == 0);\r | |
347 | \r | |
348 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
349 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN) Buffer));\r | |
350 | \r | |
351 | ASSERT ((Length & (sizeof (UINT32) - 1)) == 0);\r | |
352 | ASSERT (((UINTN) Buffer & (sizeof (UINT32) - 1)) == 0);\r | |
353 | \r | |
354 | ReturnBuffer = (UINT32 *) Buffer;\r | |
355 | \r | |
42eedea9 | 356 | while (Length != 0) {\r |
11f43dfd | 357 | MmioWrite32 (StartAddress, *(Buffer++));\r |
358 | \r | |
359 | StartAddress += sizeof (UINT32);\r | |
360 | Length -= sizeof (UINT32);\r | |
361 | }\r | |
362 | \r | |
363 | return ReturnBuffer;\r | |
364 | }\r | |
365 | \r | |
366 | /**\r | |
367 | Copy data from system memory to MMIO region by using 64-bit access.\r | |
368 | \r | |
369 | Copy data from system memory specified by Buffer to MMIO region specified \r | |
370 | by starting address StartAddress by using 64-bit access. The total number \r | |
371 | of byte to be copied is specified by Length. Length is returned.\r | |
372 | \r | |
373 | If StartAddress is not aligned on a 64-bit boundary, then ASSERT().\r | |
374 | \r | |
375 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT(). \r | |
376 | If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r | |
377 | \r | |
378 | If Length is not aligned on a 64-bit boundary, then ASSERT().\r | |
379 | \r | |
380 | If Buffer is not aligned on a 64-bit boundary, then ASSERT().\r | |
381 | \r | |
382 | @param StartAddress Starting address for the MMIO region to be copied to.\r | |
4ca0802e | 383 | @param Length Size in bytes of the copy.\r |
11f43dfd | 384 | @param Buffer Pointer to a system memory buffer containing the data to write.\r |
385 | \r | |
4ca0802e | 386 | @return Pointer to a system memory buffer containing the data to write.\r |
11f43dfd | 387 | \r |
388 | **/\r | |
389 | UINT64 *\r | |
390 | EFIAPI\r | |
391 | MmioWriteBuffer64 (\r | |
392 | IN UINTN StartAddress,\r | |
393 | IN UINTN Length,\r | |
394 | IN CONST UINT64 *Buffer\r | |
395 | )\r | |
396 | {\r | |
397 | UINT64 *ReturnBuffer;\r | |
398 | \r | |
399 | ASSERT ((StartAddress & (sizeof (UINT64) - 1)) == 0);\r | |
400 | \r | |
401 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
402 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN) Buffer));\r | |
403 | \r | |
404 | ASSERT ((Length & (sizeof (UINT64) - 1)) == 0);\r | |
405 | ASSERT (((UINTN) Buffer & (sizeof (UINT64) - 1)) == 0);\r | |
406 | \r | |
407 | ReturnBuffer = (UINT64 *) Buffer;\r | |
408 | \r | |
42eedea9 | 409 | while (Length != 0) {\r |
11f43dfd | 410 | MmioWrite64 (StartAddress, *(Buffer++));\r |
411 | \r | |
412 | StartAddress += sizeof (UINT64);\r | |
413 | Length -= sizeof (UINT64);\r | |
414 | }\r | |
415 | \r | |
416 | return ReturnBuffer;\r | |
417 | }\r | |
418 | \r |