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1 | /** @file\r | |
2 | I/O Library MMIO Buffer Functions.\r | |
3 | \r | |
4 | Copyright (c) 2007 - 2018, 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 | \r | |
11 | /**\r | |
12 | Copy data from the MMIO region to system memory by using 8-bit access.\r | |
13 | \r | |
14 | Copy data from the MMIO region specified by starting address StartAddress\r | |
15 | to system memory specified by Buffer by using 8-bit access. The total\r | |
16 | number of byte to be copied is specified by Length. Buffer is returned.\r | |
17 | \r | |
18 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r | |
19 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
20 | \r | |
21 | \r | |
22 | @param StartAddress The starting address for the MMIO region to be copied from.\r | |
23 | @param Length The size, in bytes, of Buffer.\r | |
24 | @param Buffer The pointer to a system memory buffer receiving the data read.\r | |
25 | \r | |
26 | @return Buffer\r | |
27 | \r | |
28 | **/\r | |
29 | UINT8 *\r | |
30 | EFIAPI\r | |
31 | MmioReadBuffer8 (\r | |
32 | IN UINTN StartAddress,\r | |
33 | IN UINTN Length,\r | |
34 | OUT UINT8 *Buffer\r | |
35 | )\r | |
36 | {\r | |
37 | UINT8 *ReturnBuffer;\r | |
38 | \r | |
39 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
40 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r | |
41 | \r | |
42 | ReturnBuffer = Buffer;\r | |
43 | \r | |
44 | while (Length-- != 0) {\r | |
45 | *(Buffer++) = MmioRead8 (StartAddress++);\r | |
46 | }\r | |
47 | \r | |
48 | return ReturnBuffer;\r | |
49 | }\r | |
50 | \r | |
51 | /**\r | |
52 | Copy data from the MMIO region to system memory by using 16-bit access.\r | |
53 | \r | |
54 | Copy data from the MMIO region specified by starting address StartAddress\r | |
55 | to system memory specified by Buffer by using 16-bit access. The total\r | |
56 | number of byte to be copied is specified by Length. Buffer is returned.\r | |
57 | \r | |
58 | If StartAddress is not aligned on a 16-bit boundary, then ASSERT().\r | |
59 | \r | |
60 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r | |
61 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
62 | \r | |
63 | If Length is not aligned on a 16-bit boundary, then ASSERT().\r | |
64 | If Buffer is not aligned on a 16-bit boundary, then ASSERT().\r | |
65 | \r | |
66 | @param StartAddress The starting address for the MMIO region to be copied from.\r | |
67 | @param Length The size, in bytes, of Buffer.\r | |
68 | @param Buffer The pointer to a system memory buffer receiving the data read.\r | |
69 | \r | |
70 | @return Buffer\r | |
71 | \r | |
72 | **/\r | |
73 | UINT16 *\r | |
74 | EFIAPI\r | |
75 | MmioReadBuffer16 (\r | |
76 | IN UINTN StartAddress,\r | |
77 | IN UINTN Length,\r | |
78 | OUT UINT16 *Buffer\r | |
79 | )\r | |
80 | {\r | |
81 | UINT16 *ReturnBuffer;\r | |
82 | \r | |
83 | ASSERT ((StartAddress & (sizeof (UINT16) - 1)) == 0);\r | |
84 | \r | |
85 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
86 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r | |
87 | \r | |
88 | ASSERT ((Length & (sizeof (UINT16) - 1)) == 0);\r | |
89 | ASSERT (((UINTN)Buffer & (sizeof (UINT16) - 1)) == 0);\r | |
90 | \r | |
91 | ReturnBuffer = Buffer;\r | |
92 | \r | |
93 | while (Length != 0) {\r | |
94 | *(Buffer++) = MmioRead16 (StartAddress);\r | |
95 | StartAddress += sizeof (UINT16);\r | |
96 | Length -= sizeof (UINT16);\r | |
97 | }\r | |
98 | \r | |
99 | return ReturnBuffer;\r | |
100 | }\r | |
101 | \r | |
102 | /**\r | |
103 | Copy data from the MMIO region to system memory by using 32-bit access.\r | |
104 | \r | |
105 | Copy data from the MMIO region specified by starting address StartAddress\r | |
106 | to system memory specified by Buffer by using 32-bit access. The total\r | |
107 | number of byte to be copied is specified by Length. Buffer is returned.\r | |
108 | \r | |
109 | If StartAddress is not aligned on a 32-bit boundary, then ASSERT().\r | |
110 | \r | |
111 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r | |
112 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
113 | \r | |
114 | If Length is not aligned on a 32-bit boundary, then ASSERT().\r | |
115 | If Buffer is not aligned on a 32-bit boundary, then ASSERT().\r | |
116 | \r | |
117 | @param StartAddress The starting address for the MMIO region to be copied from.\r | |
118 | @param Length The size, in bytes, of Buffer.\r | |
119 | @param Buffer The pointer to a system memory buffer receiving the data read.\r | |
120 | \r | |
121 | @return Buffer\r | |
122 | \r | |
123 | **/\r | |
124 | UINT32 *\r | |
125 | EFIAPI\r | |
126 | MmioReadBuffer32 (\r | |
127 | IN UINTN StartAddress,\r | |
128 | IN UINTN Length,\r | |
129 | OUT UINT32 *Buffer\r | |
130 | )\r | |
131 | {\r | |
132 | UINT32 *ReturnBuffer;\r | |
133 | \r | |
134 | ASSERT ((StartAddress & (sizeof (UINT32) - 1)) == 0);\r | |
135 | \r | |
136 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
137 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r | |
138 | \r | |
139 | ASSERT ((Length & (sizeof (UINT32) - 1)) == 0);\r | |
140 | ASSERT (((UINTN)Buffer & (sizeof (UINT32) - 1)) == 0);\r | |
141 | \r | |
142 | ReturnBuffer = Buffer;\r | |
143 | \r | |
144 | while (Length != 0) {\r | |
145 | *(Buffer++) = MmioRead32 (StartAddress);\r | |
146 | StartAddress += sizeof (UINT32);\r | |
147 | Length -= sizeof (UINT32);\r | |
148 | }\r | |
149 | \r | |
150 | return ReturnBuffer;\r | |
151 | }\r | |
152 | \r | |
153 | /**\r | |
154 | Copy data from the MMIO region to system memory by using 64-bit access.\r | |
155 | \r | |
156 | Copy data from the MMIO region specified by starting address StartAddress\r | |
157 | to system memory specified by Buffer by using 64-bit access. The total\r | |
158 | number of byte to be copied is specified by Length. Buffer is returned.\r | |
159 | \r | |
160 | If StartAddress is not aligned on a 64-bit boundary, then ASSERT().\r | |
161 | \r | |
162 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r | |
163 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
164 | \r | |
165 | If Length is not aligned on a 64-bit boundary, then ASSERT().\r | |
166 | If Buffer is not aligned on a 64-bit boundary, then ASSERT().\r | |
167 | \r | |
168 | @param StartAddress The starting address for the MMIO region to be copied from.\r | |
169 | @param Length The size, in bytes, of Buffer.\r | |
170 | @param Buffer The pointer to a system memory buffer receiving the data read.\r | |
171 | \r | |
172 | @return Buffer\r | |
173 | \r | |
174 | **/\r | |
175 | UINT64 *\r | |
176 | EFIAPI\r | |
177 | MmioReadBuffer64 (\r | |
178 | IN UINTN StartAddress,\r | |
179 | IN UINTN Length,\r | |
180 | OUT UINT64 *Buffer\r | |
181 | )\r | |
182 | {\r | |
183 | UINT64 *ReturnBuffer;\r | |
184 | \r | |
185 | ASSERT ((StartAddress & (sizeof (UINT64) - 1)) == 0);\r | |
186 | \r | |
187 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
188 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r | |
189 | \r | |
190 | ASSERT ((Length & (sizeof (UINT64) - 1)) == 0);\r | |
191 | ASSERT (((UINTN)Buffer & (sizeof (UINT64) - 1)) == 0);\r | |
192 | \r | |
193 | ReturnBuffer = Buffer;\r | |
194 | \r | |
195 | while (Length != 0) {\r | |
196 | *(Buffer++) = MmioRead64 (StartAddress);\r | |
197 | StartAddress += sizeof (UINT64);\r | |
198 | Length -= sizeof (UINT64);\r | |
199 | }\r | |
200 | \r | |
201 | return ReturnBuffer;\r | |
202 | }\r | |
203 | \r | |
204 | /**\r | |
205 | Copy data from system memory to the MMIO region by using 8-bit access.\r | |
206 | \r | |
207 | Copy data from system memory specified by Buffer to the MMIO region specified\r | |
208 | by starting address StartAddress by using 8-bit access. The total number\r | |
209 | of byte to be copied is specified by Length. Buffer is returned.\r | |
210 | \r | |
211 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r | |
212 | If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r | |
213 | \r | |
214 | \r | |
215 | @param StartAddress The starting address for the MMIO region to be copied to.\r | |
216 | @param Length The size, in bytes, of Buffer.\r | |
217 | @param Buffer The pointer to a system memory buffer containing the data to write.\r | |
218 | \r | |
219 | @return Buffer\r | |
220 | \r | |
221 | **/\r | |
222 | UINT8 *\r | |
223 | EFIAPI\r | |
224 | MmioWriteBuffer8 (\r | |
225 | IN UINTN StartAddress,\r | |
226 | IN UINTN Length,\r | |
227 | IN CONST UINT8 *Buffer\r | |
228 | )\r | |
229 | {\r | |
230 | VOID *ReturnBuffer;\r | |
231 | \r | |
232 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
233 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r | |
234 | \r | |
235 | ReturnBuffer = (UINT8 *)Buffer;\r | |
236 | \r | |
237 | while (Length-- != 0) {\r | |
238 | MmioWrite8 (StartAddress++, *(Buffer++));\r | |
239 | }\r | |
240 | \r | |
241 | return ReturnBuffer;\r | |
242 | }\r | |
243 | \r | |
244 | /**\r | |
245 | Copy data from system memory to the MMIO region by using 16-bit access.\r | |
246 | \r | |
247 | Copy data from system memory specified by Buffer to the MMIO region specified\r | |
248 | by starting address StartAddress by using 16-bit access. The total number\r | |
249 | of byte to be copied is specified by Length. Buffer is returned.\r | |
250 | \r | |
251 | If StartAddress is not aligned on a 16-bit boundary, then ASSERT().\r | |
252 | \r | |
253 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r | |
254 | If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r | |
255 | \r | |
256 | If Length is not aligned on a 16-bit boundary, then ASSERT().\r | |
257 | \r | |
258 | If Buffer is not aligned on a 16-bit boundary, then ASSERT().\r | |
259 | \r | |
260 | @param StartAddress The starting address for the MMIO region to be copied to.\r | |
261 | @param Length The size, in bytes, of Buffer.\r | |
262 | @param Buffer The pointer to a system memory buffer containing the data to write.\r | |
263 | \r | |
264 | @return Buffer\r | |
265 | \r | |
266 | **/\r | |
267 | UINT16 *\r | |
268 | EFIAPI\r | |
269 | MmioWriteBuffer16 (\r | |
270 | IN UINTN StartAddress,\r | |
271 | IN UINTN Length,\r | |
272 | IN CONST UINT16 *Buffer\r | |
273 | )\r | |
274 | {\r | |
275 | UINT16 *ReturnBuffer;\r | |
276 | \r | |
277 | ASSERT ((StartAddress & (sizeof (UINT16) - 1)) == 0);\r | |
278 | \r | |
279 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
280 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r | |
281 | \r | |
282 | ASSERT ((Length & (sizeof (UINT16) - 1)) == 0);\r | |
283 | ASSERT (((UINTN)Buffer & (sizeof (UINT16) - 1)) == 0);\r | |
284 | \r | |
285 | ReturnBuffer = (UINT16 *)Buffer;\r | |
286 | \r | |
287 | while (Length != 0) {\r | |
288 | MmioWrite16 (StartAddress, *(Buffer++));\r | |
289 | \r | |
290 | StartAddress += sizeof (UINT16);\r | |
291 | Length -= sizeof (UINT16);\r | |
292 | }\r | |
293 | \r | |
294 | return ReturnBuffer;\r | |
295 | }\r | |
296 | \r | |
297 | /**\r | |
298 | Copy data from system memory to the MMIO region by using 32-bit access.\r | |
299 | \r | |
300 | Copy data from system memory specified by Buffer to the MMIO region specified\r | |
301 | by starting address StartAddress by using 32-bit access. The total number\r | |
302 | of byte to be copied is specified by Length. Buffer is returned.\r | |
303 | \r | |
304 | If StartAddress is not aligned on a 32-bit boundary, then ASSERT().\r | |
305 | \r | |
306 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r | |
307 | If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r | |
308 | \r | |
309 | If Length is not aligned on a 32-bit boundary, then ASSERT().\r | |
310 | \r | |
311 | If Buffer is not aligned on a 32-bit boundary, then ASSERT().\r | |
312 | \r | |
313 | @param StartAddress The starting address for the MMIO region to be copied to.\r | |
314 | @param Length The size, in bytes, of Buffer.\r | |
315 | @param Buffer The pointer to a system memory buffer containing the data to write.\r | |
316 | \r | |
317 | @return Buffer\r | |
318 | \r | |
319 | **/\r | |
320 | UINT32 *\r | |
321 | EFIAPI\r | |
322 | MmioWriteBuffer32 (\r | |
323 | IN UINTN StartAddress,\r | |
324 | IN UINTN Length,\r | |
325 | IN CONST UINT32 *Buffer\r | |
326 | )\r | |
327 | {\r | |
328 | UINT32 *ReturnBuffer;\r | |
329 | \r | |
330 | ASSERT ((StartAddress & (sizeof (UINT32) - 1)) == 0);\r | |
331 | \r | |
332 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
333 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r | |
334 | \r | |
335 | ASSERT ((Length & (sizeof (UINT32) - 1)) == 0);\r | |
336 | ASSERT (((UINTN)Buffer & (sizeof (UINT32) - 1)) == 0);\r | |
337 | \r | |
338 | ReturnBuffer = (UINT32 *)Buffer;\r | |
339 | \r | |
340 | while (Length != 0) {\r | |
341 | MmioWrite32 (StartAddress, *(Buffer++));\r | |
342 | \r | |
343 | StartAddress += sizeof (UINT32);\r | |
344 | Length -= sizeof (UINT32);\r | |
345 | }\r | |
346 | \r | |
347 | return ReturnBuffer;\r | |
348 | }\r | |
349 | \r | |
350 | /**\r | |
351 | Copy data from system memory to the MMIO region by using 64-bit access.\r | |
352 | \r | |
353 | Copy data from system memory specified by Buffer to the MMIO region specified\r | |
354 | by starting address StartAddress by using 64-bit access. The total number\r | |
355 | of byte to be copied is specified by Length. Buffer is returned.\r | |
356 | \r | |
357 | If StartAddress is not aligned on a 64-bit boundary, then ASSERT().\r | |
358 | \r | |
359 | If Length is greater than (MAX_ADDRESS - StartAddress + 1), then ASSERT().\r | |
360 | If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().\r | |
361 | \r | |
362 | If Length is not aligned on a 64-bit boundary, then ASSERT().\r | |
363 | \r | |
364 | If Buffer is not aligned on a 64-bit boundary, then ASSERT().\r | |
365 | \r | |
366 | @param StartAddress The starting address for the MMIO region to be copied to.\r | |
367 | @param Length The size, in bytes, of Buffer.\r | |
368 | @param Buffer The pointer to a system memory buffer containing the data to write.\r | |
369 | \r | |
370 | @return Buffer\r | |
371 | \r | |
372 | **/\r | |
373 | UINT64 *\r | |
374 | EFIAPI\r | |
375 | MmioWriteBuffer64 (\r | |
376 | IN UINTN StartAddress,\r | |
377 | IN UINTN Length,\r | |
378 | IN CONST UINT64 *Buffer\r | |
379 | )\r | |
380 | {\r | |
381 | UINT64 *ReturnBuffer;\r | |
382 | \r | |
383 | ASSERT ((StartAddress & (sizeof (UINT64) - 1)) == 0);\r | |
384 | \r | |
385 | ASSERT ((Length - 1) <= (MAX_ADDRESS - StartAddress));\r | |
386 | ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r | |
387 | \r | |
388 | ASSERT ((Length & (sizeof (UINT64) - 1)) == 0);\r | |
389 | ASSERT (((UINTN)Buffer & (sizeof (UINT64) - 1)) == 0);\r | |
390 | \r | |
391 | ReturnBuffer = (UINT64 *)Buffer;\r | |
392 | \r | |
393 | while (Length != 0) {\r | |
394 | MmioWrite64 (StartAddress, *(Buffer++));\r | |
395 | \r | |
396 | StartAddress += sizeof (UINT64);\r | |
397 | Length -= sizeof (UINT64);\r | |
398 | }\r | |
399 | \r | |
400 | return ReturnBuffer;\r | |
401 | }\r |