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dd51a993 | 1 | /** @file\r |
2 | Implementation of SmBusLib class library for PEI phase.\r | |
3 | \r | |
4 | Copyright (c) 2006, Intel Corporation<BR>\r | |
bad46384 | 5 | All rights reserved. This program and the accompanying materials\r |
6 | are 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 | |
dd51a993 | 12 | \r |
13 | \r | |
dd51a993 | 14 | **/\r |
15 | \r | |
16 | #include "InternalSmbusLib.h"\r | |
17 | \r | |
18 | /**\r | |
19 | Executes an SMBUS quick read command.\r | |
20 | \r | |
21 | Executes an SMBUS quick read command on the SMBUS device specified by SmBusAddress.\r | |
22 | Only the SMBUS slave address field of SmBusAddress is required.\r | |
23 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
24 | If PEC is set in SmBusAddress, then ASSERT().\r | |
25 | If Command in SmBusAddress is not zero, then ASSERT().\r | |
26 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
27 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
28 | \r | |
29 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
30 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
31 | @param Status Return status for the executed command.\r | |
32 | This is an optional parameter and may be NULL.\r | |
33 | \r | |
34 | **/\r | |
35 | VOID\r | |
36 | EFIAPI\r | |
37 | SmBusQuickRead (\r | |
38 | IN UINTN SmBusAddress,\r | |
39 | OUT RETURN_STATUS *Status OPTIONAL\r | |
40 | )\r | |
41 | {\r | |
42 | ASSERT (!SMBUS_LIB_PEC (SmBusAddress));\r | |
43 | ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);\r | |
44 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
45 | ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);\r | |
46 | \r | |
47 | InternalSmBusExec (EfiSmbusQuickRead, SmBusAddress, 0, NULL, Status);\r | |
48 | }\r | |
49 | \r | |
50 | /**\r | |
51 | Executes an SMBUS quick write command.\r | |
52 | \r | |
53 | Executes an SMBUS quick write command on the SMBUS device specified by SmBusAddress.\r | |
54 | Only the SMBUS slave address field of SmBusAddress is required.\r | |
55 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
56 | If PEC is set in SmBusAddress, then ASSERT().\r | |
57 | If Command in SmBusAddress is not zero, then ASSERT().\r | |
58 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
59 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
60 | \r | |
61 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
62 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
63 | @param Status Return status for the executed command.\r | |
64 | This is an optional parameter and may be NULL.\r | |
65 | \r | |
66 | **/\r | |
67 | VOID\r | |
68 | EFIAPI\r | |
69 | SmBusQuickWrite (\r | |
70 | IN UINTN SmBusAddress,\r | |
71 | OUT RETURN_STATUS *Status OPTIONAL\r | |
72 | )\r | |
73 | {\r | |
74 | ASSERT (!SMBUS_LIB_PEC (SmBusAddress));\r | |
75 | ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);\r | |
76 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
77 | ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);\r | |
78 | \r | |
79 | InternalSmBusExec (EfiSmbusQuickWrite, SmBusAddress, 0, NULL, Status);\r | |
80 | }\r | |
81 | \r | |
82 | /**\r | |
83 | Executes an SMBUS receive byte command.\r | |
84 | \r | |
85 | Executes an SMBUS receive byte command on the SMBUS device specified by SmBusAddress.\r | |
86 | Only the SMBUS slave address field of SmBusAddress is required.\r | |
87 | The byte received from the SMBUS is returned.\r | |
88 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
89 | If Command in SmBusAddress is not zero, then ASSERT().\r | |
90 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
91 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
92 | \r | |
93 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
94 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
95 | @param Status Return status for the executed command.\r | |
96 | This is an optional parameter and may be NULL.\r | |
97 | \r | |
98 | @return The byte received from the SMBUS.\r | |
99 | \r | |
100 | **/\r | |
101 | UINT8\r | |
102 | EFIAPI\r | |
103 | SmBusReceiveByte (\r | |
104 | IN UINTN SmBusAddress,\r | |
105 | OUT RETURN_STATUS *Status OPTIONAL\r | |
106 | )\r | |
107 | {\r | |
108 | UINT8 Byte;\r | |
109 | \r | |
110 | ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);\r | |
111 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
112 | ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);\r | |
113 | \r | |
114 | InternalSmBusExec (EfiSmbusReceiveByte, SmBusAddress, 1, &Byte, Status);\r | |
115 | \r | |
116 | return Byte;\r | |
117 | }\r | |
118 | \r | |
119 | /**\r | |
120 | Executes an SMBUS send byte command.\r | |
121 | \r | |
122 | Executes an SMBUS send byte command on the SMBUS device specified by SmBusAddress.\r | |
123 | The byte specified by Value is sent.\r | |
124 | Only the SMBUS slave address field of SmBusAddress is required. Value is returned.\r | |
125 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
126 | If Command in SmBusAddress is not zero, then ASSERT().\r | |
127 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
128 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
129 | \r | |
130 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
131 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
132 | @param Value The 8-bit value to send.\r | |
133 | @param Status Return status for the executed command.\r | |
134 | This is an optional parameter and may be NULL.\r | |
135 | \r | |
136 | @return The parameter of Value.\r | |
137 | \r | |
138 | **/\r | |
139 | UINT8\r | |
140 | EFIAPI\r | |
141 | SmBusSendByte (\r | |
142 | IN UINTN SmBusAddress,\r | |
143 | IN UINT8 Value,\r | |
144 | OUT RETURN_STATUS *Status OPTIONAL\r | |
145 | )\r | |
146 | {\r | |
147 | UINT8 Byte;\r | |
148 | \r | |
149 | ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);\r | |
150 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
151 | ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);\r | |
152 | \r | |
153 | Byte = Value;\r | |
154 | InternalSmBusExec (EfiSmbusSendByte, SmBusAddress, 1, &Byte, Status);\r | |
155 | \r | |
156 | return Value;\r | |
157 | }\r | |
158 | \r | |
159 | /**\r | |
160 | Executes an SMBUS read data byte command.\r | |
161 | \r | |
162 | Executes an SMBUS read data byte command on the SMBUS device specified by SmBusAddress.\r | |
163 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.\r | |
164 | The 8-bit value read from the SMBUS is returned.\r | |
165 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
166 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
167 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
168 | \r | |
169 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
170 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
171 | @param Status Return status for the executed command.\r | |
172 | This is an optional parameter and may be NULL.\r | |
173 | \r | |
174 | @return The byte read from the SMBUS.\r | |
175 | \r | |
176 | **/\r | |
177 | UINT8\r | |
178 | EFIAPI\r | |
179 | SmBusReadDataByte (\r | |
180 | IN UINTN SmBusAddress,\r | |
181 | OUT RETURN_STATUS *Status OPTIONAL\r | |
182 | )\r | |
183 | {\r | |
184 | UINT8 Byte;\r | |
185 | \r | |
186 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
187 | ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);\r | |
188 | \r | |
189 | InternalSmBusExec (EfiSmbusReadByte, SmBusAddress, 1, &Byte, Status);\r | |
bad46384 | 190 | \r |
dd51a993 | 191 | return Byte;\r |
192 | }\r | |
193 | \r | |
194 | /**\r | |
195 | Executes an SMBUS write data byte command.\r | |
196 | \r | |
197 | Executes an SMBUS write data byte command on the SMBUS device specified by SmBusAddress.\r | |
198 | The 8-bit value specified by Value is written.\r | |
199 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.\r | |
200 | Value is returned.\r | |
201 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
202 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
203 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
204 | \r | |
205 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
206 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
207 | @param Value The 8-bit value to write.\r | |
208 | @param Status Return status for the executed command.\r | |
209 | This is an optional parameter and may be NULL.\r | |
210 | \r | |
211 | @return The parameter of Value.\r | |
212 | \r | |
213 | **/\r | |
214 | UINT8\r | |
215 | EFIAPI\r | |
216 | SmBusWriteDataByte (\r | |
217 | IN UINTN SmBusAddress,\r | |
218 | IN UINT8 Value,\r | |
219 | OUT RETURN_STATUS *Status OPTIONAL\r | |
220 | )\r | |
221 | {\r | |
222 | UINT8 Byte;\r | |
223 | \r | |
224 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
225 | ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);\r | |
226 | \r | |
227 | Byte = Value;\r | |
228 | InternalSmBusExec (EfiSmbusWriteByte, SmBusAddress, 1, &Byte, Status);\r | |
bad46384 | 229 | \r |
dd51a993 | 230 | return Value;\r |
231 | }\r | |
232 | \r | |
233 | /**\r | |
234 | Executes an SMBUS read data word command.\r | |
235 | \r | |
236 | Executes an SMBUS read data word command on the SMBUS device specified by SmBusAddress.\r | |
237 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.\r | |
238 | The 16-bit value read from the SMBUS is returned.\r | |
239 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
240 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
241 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
bad46384 | 242 | \r |
dd51a993 | 243 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r |
244 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
245 | @param Status Return status for the executed command.\r | |
246 | This is an optional parameter and may be NULL.\r | |
247 | \r | |
248 | @return The byte read from the SMBUS.\r | |
249 | \r | |
250 | **/\r | |
251 | UINT16\r | |
252 | EFIAPI\r | |
253 | SmBusReadDataWord (\r | |
254 | IN UINTN SmBusAddress,\r | |
255 | OUT RETURN_STATUS *Status OPTIONAL\r | |
256 | )\r | |
257 | {\r | |
258 | UINT16 Word;\r | |
259 | \r | |
260 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
261 | ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);\r | |
262 | \r | |
263 | InternalSmBusExec (EfiSmbusReadWord, SmBusAddress, 2, &Word, Status);\r | |
bad46384 | 264 | \r |
dd51a993 | 265 | return Word;\r |
266 | }\r | |
267 | \r | |
268 | /**\r | |
269 | Executes an SMBUS write data word command.\r | |
270 | \r | |
271 | Executes an SMBUS write data word command on the SMBUS device specified by SmBusAddress.\r | |
272 | The 16-bit value specified by Value is written.\r | |
273 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.\r | |
274 | Value is returned.\r | |
275 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
276 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
277 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
278 | \r | |
279 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
280 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
281 | @param Value The 16-bit value to write.\r | |
282 | @param Status Return status for the executed command.\r | |
283 | This is an optional parameter and may be NULL.\r | |
284 | \r | |
285 | @return The parameter of Value.\r | |
286 | \r | |
287 | **/\r | |
288 | UINT16\r | |
289 | EFIAPI\r | |
290 | SmBusWriteDataWord (\r | |
291 | IN UINTN SmBusAddress,\r | |
292 | IN UINT16 Value,\r | |
293 | OUT RETURN_STATUS *Status OPTIONAL\r | |
294 | )\r | |
295 | {\r | |
296 | UINT16 Word;\r | |
297 | \r | |
298 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
299 | ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);\r | |
300 | \r | |
301 | Word = Value;\r | |
302 | InternalSmBusExec (EfiSmbusWriteWord, SmBusAddress, 2, &Word, Status);\r | |
303 | \r | |
304 | return Value;\r | |
305 | }\r | |
306 | \r | |
307 | /**\r | |
308 | Executes an SMBUS process call command.\r | |
309 | \r | |
310 | Executes an SMBUS process call command on the SMBUS device specified by SmBusAddress.\r | |
311 | The 16-bit value specified by Value is written.\r | |
312 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.\r | |
313 | The 16-bit value returned by the process call command is returned.\r | |
314 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
315 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
316 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
317 | \r | |
318 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
319 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
320 | @param Value The 16-bit value to write.\r | |
321 | @param Status Return status for the executed command.\r | |
322 | This is an optional parameter and may be NULL.\r | |
323 | \r | |
324 | @return The 16-bit value returned by the process call command.\r | |
325 | \r | |
326 | **/\r | |
327 | UINT16\r | |
328 | EFIAPI\r | |
329 | SmBusProcessCall (\r | |
330 | IN UINTN SmBusAddress,\r | |
331 | IN UINT16 Value,\r | |
332 | OUT RETURN_STATUS *Status OPTIONAL\r | |
333 | )\r | |
334 | {\r | |
335 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
336 | ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);\r | |
337 | \r | |
338 | InternalSmBusExec (EfiSmbusProcessCall, SmBusAddress, 2, &Value, Status);\r | |
bad46384 | 339 | \r |
dd51a993 | 340 | return Value;\r |
341 | }\r | |
342 | \r | |
343 | /**\r | |
344 | Executes an SMBUS read block command.\r | |
345 | \r | |
346 | Executes an SMBUS read block command on the SMBUS device specified by SmBusAddress.\r | |
347 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.\r | |
348 | Bytes are read from the SMBUS and stored in Buffer.\r | |
349 | The number of bytes read is returned, and will never return a value larger than 32-bytes.\r | |
350 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
351 | It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.\r | |
352 | SMBUS supports a maximum transfer size of 32 bytes, so Buffer does not need to be any larger than 32 bytes.\r | |
353 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
354 | If Buffer is NULL, then ASSERT().\r | |
355 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
356 | \r | |
357 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
358 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
359 | @param Buffer Pointer to the buffer to store the bytes read from the SMBUS.\r | |
360 | @param Status Return status for the executed command.\r | |
361 | This is an optional parameter and may be NULL.\r | |
362 | \r | |
363 | @return The number of bytes read.\r | |
364 | \r | |
365 | **/\r | |
366 | UINTN\r | |
367 | EFIAPI\r | |
368 | SmBusReadBlock (\r | |
369 | IN UINTN SmBusAddress,\r | |
370 | OUT VOID *Buffer,\r | |
371 | OUT RETURN_STATUS *Status OPTIONAL\r | |
372 | )\r | |
373 | {\r | |
374 | ASSERT (Buffer != NULL);\r | |
375 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
376 | ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);\r | |
377 | \r | |
378 | return InternalSmBusExec (EfiSmbusReadBlock, SmBusAddress, 0x20, Buffer, Status);\r | |
379 | }\r | |
380 | \r | |
381 | /**\r | |
382 | Executes an SMBUS write block command.\r | |
383 | \r | |
384 | Executes an SMBUS write block command on the SMBUS device specified by SmBusAddress.\r | |
385 | The SMBUS slave address, SMBUS command, and SMBUS length fields of SmBusAddress are required.\r | |
386 | Bytes are written to the SMBUS from Buffer.\r | |
387 | The number of bytes written is returned, and will never return a value larger than 32-bytes.\r | |
bad46384 | 388 | If Status is not NULL, then the status of the executed command is returned in Status.\r |
dd51a993 | 389 | If Length in SmBusAddress is zero or greater than 32, then ASSERT().\r |
390 | If Buffer is NULL, then ASSERT().\r | |
391 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
392 | \r | |
393 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
394 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
395 | @param Buffer Pointer to the buffer to store the bytes read from the SMBUS.\r | |
396 | @param Status Return status for the executed command.\r | |
397 | This is an optional parameter and may be NULL.\r | |
398 | \r | |
399 | @return The number of bytes written.\r | |
400 | \r | |
401 | **/\r | |
402 | UINTN\r | |
403 | EFIAPI\r | |
404 | SmBusWriteBlock (\r | |
405 | IN UINTN SmBusAddress,\r | |
406 | OUT VOID *Buffer,\r | |
407 | OUT RETURN_STATUS *Status OPTIONAL\r | |
408 | )\r | |
409 | {\r | |
410 | UINTN Length;\r | |
411 | \r | |
412 | ASSERT (Buffer != NULL);\r | |
413 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) >= 1);\r | |
414 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) <= 32);\r | |
415 | ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);\r | |
416 | \r | |
417 | Length = SMBUS_LIB_LENGTH (SmBusAddress);\r | |
418 | return InternalSmBusExec (EfiSmbusWriteBlock, SmBusAddress, Length, Buffer, Status);\r | |
419 | }\r | |
420 | \r | |
421 | /**\r | |
422 | Executes an SMBUS block process call command.\r | |
423 | \r | |
424 | Executes an SMBUS block process call command on the SMBUS device specified by SmBusAddress.\r | |
425 | The SMBUS slave address, SMBUS command, and SMBUS length fields of SmBusAddress are required.\r | |
426 | Bytes are written to the SMBUS from WriteBuffer. Bytes are then read from the SMBUS into ReadBuffer.\r | |
427 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
428 | It is the caller's responsibility to make sure ReadBuffer is large enough for the total number of bytes read.\r | |
429 | SMBUS supports a maximum transfer size of 32 bytes, so Buffer does not need to be any larger than 32 bytes.\r | |
430 | If Length in SmBusAddress is zero or greater than 32, then ASSERT().\r | |
431 | If WriteBuffer is NULL, then ASSERT().\r | |
432 | If ReadBuffer is NULL, then ASSERT().\r | |
433 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
434 | \r | |
435 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
436 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
437 | @param WriteBuffer Pointer to the buffer of bytes to write to the SMBUS.\r | |
438 | @param ReadBuffer Pointer to the buffer of bytes to read from the SMBUS.\r | |
439 | @param Status Return status for the executed command.\r | |
440 | This is an optional parameter and may be NULL.\r | |
441 | \r | |
442 | @return The number of bytes written.\r | |
443 | \r | |
444 | **/\r | |
445 | UINTN\r | |
446 | EFIAPI\r | |
447 | SmBusBlockProcessCall (\r | |
448 | IN UINTN SmBusAddress,\r | |
449 | IN VOID *WriteBuffer,\r | |
450 | OUT VOID *ReadBuffer,\r | |
451 | OUT RETURN_STATUS *Status OPTIONAL\r | |
452 | )\r | |
453 | {\r | |
454 | UINTN Length;\r | |
455 | \r | |
456 | ASSERT (WriteBuffer != NULL);\r | |
457 | ASSERT (ReadBuffer != NULL);\r | |
458 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) >= 1);\r | |
459 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) <= 32);\r | |
460 | ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);\r | |
461 | \r | |
462 | Length = SMBUS_LIB_LENGTH (SmBusAddress);\r | |
463 | //\r | |
464 | // Assuming that ReadBuffer is large enough to save another memory copy.\r | |
465 | //\r | |
466 | ReadBuffer = CopyMem (ReadBuffer, WriteBuffer, Length);\r | |
467 | return InternalSmBusExec (EfiSmbusBWBRProcessCall, SmBusAddress, Length, ReadBuffer, Status);\r | |
468 | }\r |