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a67d1f18 | 1 | /** @file\r |
2 | Implementation of SmBusLib class library for PEI phase.\r | |
3 | \r | |
1c2f052d | 4 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r |
22a69a5e | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
a67d1f18 | 6 | \r |
7 | \r | |
8 | Module Name: SmbusLib.c\r | |
9 | \r | |
10 | **/\r | |
11 | \r | |
12 | #include "InternalSmbusLib.h"\r | |
13 | \r | |
14 | /**\r | |
15 | Executes an SMBUS quick read command.\r | |
16 | \r | |
17 | Executes an SMBUS quick read command on the SMBUS device specified by SmBusAddress.\r | |
18 | Only the SMBUS slave address field of SmBusAddress is required.\r | |
19 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
20 | If PEC is set in SmBusAddress, then ASSERT().\r | |
21 | If Command in SmBusAddress is not zero, then ASSERT().\r | |
22 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
23 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
24 | \r | |
25 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
26 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
27 | @param Status Return status for the executed command.\r | |
28 | This is an optional parameter and may be NULL.\r | |
29 | \r | |
30 | **/\r | |
31 | VOID\r | |
32 | EFIAPI\r | |
33 | SmBusQuickRead (\r | |
34 | IN UINTN SmBusAddress,\r | |
35 | OUT RETURN_STATUS *Status OPTIONAL\r | |
36 | )\r | |
37 | {\r | |
38 | ASSERT (!SMBUS_LIB_PEC (SmBusAddress));\r | |
39 | ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);\r | |
40 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
66eebcf9 | 41 | ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);\r |
a67d1f18 | 42 | \r |
43 | InternalSmBusExec (EfiSmbusQuickRead, SmBusAddress, 0, NULL, Status);\r | |
44 | }\r | |
45 | \r | |
46 | /**\r | |
47 | Executes an SMBUS quick write command.\r | |
48 | \r | |
49 | Executes an SMBUS quick write command on the SMBUS device specified by SmBusAddress.\r | |
50 | Only the SMBUS slave address field of SmBusAddress is required.\r | |
51 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
52 | If PEC is set in SmBusAddress, then ASSERT().\r | |
53 | If Command in SmBusAddress is not zero, then ASSERT().\r | |
54 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
55 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
56 | \r | |
57 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
58 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
59 | @param Status Return status for the executed command.\r | |
60 | This is an optional parameter and may be NULL.\r | |
61 | \r | |
62 | **/\r | |
63 | VOID\r | |
64 | EFIAPI\r | |
65 | SmBusQuickWrite (\r | |
66 | IN UINTN SmBusAddress,\r | |
67 | OUT RETURN_STATUS *Status OPTIONAL\r | |
68 | )\r | |
69 | {\r | |
70 | ASSERT (!SMBUS_LIB_PEC (SmBusAddress));\r | |
71 | ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);\r | |
72 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
66eebcf9 | 73 | ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);\r |
a67d1f18 | 74 | \r |
75 | InternalSmBusExec (EfiSmbusQuickWrite, SmBusAddress, 0, NULL, Status);\r | |
76 | }\r | |
77 | \r | |
78 | /**\r | |
79 | Executes an SMBUS receive byte command.\r | |
80 | \r | |
81 | Executes an SMBUS receive byte command on the SMBUS device specified by SmBusAddress.\r | |
82 | Only the SMBUS slave address field of SmBusAddress is required.\r | |
83 | The byte received from the SMBUS is returned.\r | |
84 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
85 | If Command in SmBusAddress is not zero, then ASSERT().\r | |
86 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
87 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
88 | \r | |
89 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
90 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
91 | @param Status Return status for the executed command.\r | |
92 | This is an optional parameter and may be NULL.\r | |
93 | \r | |
94 | @return The byte received from the SMBUS.\r | |
95 | \r | |
96 | **/\r | |
97 | UINT8\r | |
98 | EFIAPI\r | |
99 | SmBusReceiveByte (\r | |
100 | IN UINTN SmBusAddress,\r | |
101 | OUT RETURN_STATUS *Status OPTIONAL\r | |
102 | )\r | |
103 | {\r | |
104 | UINT8 Byte;\r | |
105 | \r | |
106 | ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);\r | |
107 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
66eebcf9 | 108 | ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);\r |
a67d1f18 | 109 | \r |
110 | InternalSmBusExec (EfiSmbusReceiveByte, SmBusAddress, 1, &Byte, Status);\r | |
111 | \r | |
112 | return Byte;\r | |
113 | }\r | |
114 | \r | |
115 | /**\r | |
116 | Executes an SMBUS send byte command.\r | |
117 | \r | |
118 | Executes an SMBUS send byte command on the SMBUS device specified by SmBusAddress.\r | |
119 | The byte specified by Value is sent.\r | |
120 | Only the SMBUS slave address field of SmBusAddress is required. Value is returned.\r | |
121 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
122 | If Command in SmBusAddress is not zero, then ASSERT().\r | |
123 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
124 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
125 | \r | |
126 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
127 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
128 | @param Value The 8-bit value to send.\r | |
129 | @param Status Return status for the executed command.\r | |
130 | This is an optional parameter and may be NULL.\r | |
131 | \r | |
132 | @return The parameter of Value.\r | |
133 | \r | |
134 | **/\r | |
135 | UINT8\r | |
136 | EFIAPI\r | |
137 | SmBusSendByte (\r | |
138 | IN UINTN SmBusAddress,\r | |
139 | IN UINT8 Value,\r | |
140 | OUT RETURN_STATUS *Status OPTIONAL\r | |
141 | )\r | |
142 | {\r | |
143 | UINT8 Byte;\r | |
144 | \r | |
145 | ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);\r | |
146 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
66eebcf9 | 147 | ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);\r |
a67d1f18 | 148 | \r |
149 | Byte = Value;\r | |
150 | InternalSmBusExec (EfiSmbusSendByte, SmBusAddress, 1, &Byte, Status);\r | |
151 | \r | |
152 | return Value;\r | |
153 | }\r | |
154 | \r | |
155 | /**\r | |
156 | Executes an SMBUS read data byte command.\r | |
157 | \r | |
158 | Executes an SMBUS read data byte command on the SMBUS device specified by SmBusAddress.\r | |
159 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.\r | |
160 | The 8-bit value read from the SMBUS is returned.\r | |
161 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
162 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
163 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
164 | \r | |
165 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
166 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
167 | @param Status Return status for the executed command.\r | |
168 | This is an optional parameter and may be NULL.\r | |
169 | \r | |
170 | @return The byte read from the SMBUS.\r | |
171 | \r | |
172 | **/\r | |
173 | UINT8\r | |
174 | EFIAPI\r | |
175 | SmBusReadDataByte (\r | |
176 | IN UINTN SmBusAddress,\r | |
177 | OUT RETURN_STATUS *Status OPTIONAL\r | |
178 | )\r | |
179 | {\r | |
180 | UINT8 Byte;\r | |
181 | \r | |
182 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
66eebcf9 | 183 | ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);\r |
a67d1f18 | 184 | \r |
185 | InternalSmBusExec (EfiSmbusReadByte, SmBusAddress, 1, &Byte, Status);\r | |
1c2f052d | 186 | \r |
a67d1f18 | 187 | return Byte;\r |
188 | }\r | |
189 | \r | |
190 | /**\r | |
191 | Executes an SMBUS write data byte command.\r | |
192 | \r | |
193 | Executes an SMBUS write data byte command on the SMBUS device specified by SmBusAddress.\r | |
194 | The 8-bit value specified by Value is written.\r | |
195 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.\r | |
196 | Value is returned.\r | |
197 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
198 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
199 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
200 | \r | |
201 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
202 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
203 | @param Value The 8-bit value to write.\r | |
204 | @param Status Return status for the executed command.\r | |
205 | This is an optional parameter and may be NULL.\r | |
206 | \r | |
207 | @return The parameter of Value.\r | |
208 | \r | |
209 | **/\r | |
210 | UINT8\r | |
211 | EFIAPI\r | |
212 | SmBusWriteDataByte (\r | |
213 | IN UINTN SmBusAddress,\r | |
214 | IN UINT8 Value,\r | |
215 | OUT RETURN_STATUS *Status OPTIONAL\r | |
216 | )\r | |
217 | {\r | |
218 | UINT8 Byte;\r | |
219 | \r | |
220 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
66eebcf9 | 221 | ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);\r |
a67d1f18 | 222 | \r |
223 | Byte = Value;\r | |
224 | InternalSmBusExec (EfiSmbusWriteByte, SmBusAddress, 1, &Byte, Status);\r | |
1c2f052d | 225 | \r |
a67d1f18 | 226 | return Value;\r |
227 | }\r | |
228 | \r | |
229 | /**\r | |
230 | Executes an SMBUS read data word command.\r | |
231 | \r | |
232 | Executes an SMBUS read data word command on the SMBUS device specified by SmBusAddress.\r | |
233 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.\r | |
234 | The 16-bit value read from the SMBUS is returned.\r | |
235 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
236 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
237 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
1c2f052d | 238 | \r |
a67d1f18 | 239 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r |
240 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
241 | @param Status Return status for the executed command.\r | |
242 | This is an optional parameter and may be NULL.\r | |
243 | \r | |
244 | @return The byte read from the SMBUS.\r | |
245 | \r | |
246 | **/\r | |
247 | UINT16\r | |
248 | EFIAPI\r | |
249 | SmBusReadDataWord (\r | |
250 | IN UINTN SmBusAddress,\r | |
251 | OUT RETURN_STATUS *Status OPTIONAL\r | |
252 | )\r | |
253 | {\r | |
254 | UINT16 Word;\r | |
255 | \r | |
256 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
66eebcf9 | 257 | ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);\r |
a67d1f18 | 258 | \r |
259 | InternalSmBusExec (EfiSmbusReadWord, SmBusAddress, 2, &Word, Status);\r | |
1c2f052d | 260 | \r |
a67d1f18 | 261 | return Word;\r |
262 | }\r | |
263 | \r | |
264 | /**\r | |
265 | Executes an SMBUS write data word command.\r | |
266 | \r | |
267 | Executes an SMBUS write data word command on the SMBUS device specified by SmBusAddress.\r | |
268 | The 16-bit value specified by Value is written.\r | |
269 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.\r | |
270 | Value is returned.\r | |
271 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
272 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
273 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
274 | \r | |
275 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
276 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
277 | @param Value The 16-bit value to write.\r | |
278 | @param Status Return status for the executed command.\r | |
279 | This is an optional parameter and may be NULL.\r | |
280 | \r | |
281 | @return The parameter of Value.\r | |
282 | \r | |
283 | **/\r | |
284 | UINT16\r | |
285 | EFIAPI\r | |
286 | SmBusWriteDataWord (\r | |
287 | IN UINTN SmBusAddress,\r | |
288 | IN UINT16 Value,\r | |
289 | OUT RETURN_STATUS *Status OPTIONAL\r | |
290 | )\r | |
291 | {\r | |
292 | UINT16 Word;\r | |
293 | \r | |
294 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
66eebcf9 | 295 | ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);\r |
a67d1f18 | 296 | \r |
297 | Word = Value;\r | |
298 | InternalSmBusExec (EfiSmbusWriteWord, SmBusAddress, 2, &Word, Status);\r | |
299 | \r | |
300 | return Value;\r | |
301 | }\r | |
302 | \r | |
303 | /**\r | |
304 | Executes an SMBUS process call command.\r | |
305 | \r | |
306 | Executes an SMBUS process call command on the SMBUS device specified by SmBusAddress.\r | |
307 | The 16-bit value specified by Value is written.\r | |
308 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.\r | |
309 | The 16-bit value returned by the process call command is returned.\r | |
310 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
311 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
312 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
313 | \r | |
314 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
315 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
316 | @param Value The 16-bit value to write.\r | |
317 | @param Status Return status for the executed command.\r | |
318 | This is an optional parameter and may be NULL.\r | |
319 | \r | |
320 | @return The 16-bit value returned by the process call command.\r | |
321 | \r | |
322 | **/\r | |
323 | UINT16\r | |
324 | EFIAPI\r | |
325 | SmBusProcessCall (\r | |
326 | IN UINTN SmBusAddress,\r | |
327 | IN UINT16 Value,\r | |
328 | OUT RETURN_STATUS *Status OPTIONAL\r | |
329 | )\r | |
330 | {\r | |
331 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
66eebcf9 | 332 | ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);\r |
a67d1f18 | 333 | \r |
334 | InternalSmBusExec (EfiSmbusProcessCall, SmBusAddress, 2, &Value, Status);\r | |
1c2f052d | 335 | \r |
a67d1f18 | 336 | return Value;\r |
337 | }\r | |
338 | \r | |
339 | /**\r | |
340 | Executes an SMBUS read block command.\r | |
341 | \r | |
342 | Executes an SMBUS read block command on the SMBUS device specified by SmBusAddress.\r | |
343 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.\r | |
344 | Bytes are read from the SMBUS and stored in Buffer.\r | |
345 | The number of bytes read is returned, and will never return a value larger than 32-bytes.\r | |
346 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
347 | It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.\r | |
348 | SMBUS supports a maximum transfer size of 32 bytes, so Buffer does not need to be any larger than 32 bytes.\r | |
349 | If Length in SmBusAddress is not zero, then ASSERT().\r | |
350 | If Buffer is NULL, then ASSERT().\r | |
351 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
352 | \r | |
353 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
354 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
355 | @param Buffer Pointer to the buffer to store the bytes read from the SMBUS.\r | |
356 | @param Status Return status for the executed command.\r | |
357 | This is an optional parameter and may be NULL.\r | |
358 | \r | |
359 | @return The number of bytes read.\r | |
360 | \r | |
361 | **/\r | |
362 | UINTN\r | |
363 | EFIAPI\r | |
364 | SmBusReadBlock (\r | |
365 | IN UINTN SmBusAddress,\r | |
366 | OUT VOID *Buffer,\r | |
367 | OUT RETURN_STATUS *Status OPTIONAL\r | |
368 | )\r | |
369 | {\r | |
370 | ASSERT (Buffer != NULL);\r | |
371 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);\r | |
66eebcf9 | 372 | ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);\r |
a67d1f18 | 373 | \r |
374 | return InternalSmBusExec (EfiSmbusReadBlock, SmBusAddress, 0x20, Buffer, Status);\r | |
375 | }\r | |
376 | \r | |
377 | /**\r | |
378 | Executes an SMBUS write block command.\r | |
379 | \r | |
380 | Executes an SMBUS write block command on the SMBUS device specified by SmBusAddress.\r | |
381 | The SMBUS slave address, SMBUS command, and SMBUS length fields of SmBusAddress are required.\r | |
382 | Bytes are written to the SMBUS from Buffer.\r | |
383 | The number of bytes written is returned, and will never return a value larger than 32-bytes.\r | |
1c2f052d | 384 | If Status is not NULL, then the status of the executed command is returned in Status.\r |
a67d1f18 | 385 | If Length in SmBusAddress is zero or greater than 32, then ASSERT().\r |
386 | If Buffer is NULL, then ASSERT().\r | |
387 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
388 | \r | |
389 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
390 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
391 | @param Buffer Pointer to the buffer to store the bytes read from the SMBUS.\r | |
392 | @param Status Return status for the executed command.\r | |
393 | This is an optional parameter and may be NULL.\r | |
394 | \r | |
395 | @return The number of bytes written.\r | |
396 | \r | |
397 | **/\r | |
398 | UINTN\r | |
399 | EFIAPI\r | |
400 | SmBusWriteBlock (\r | |
401 | IN UINTN SmBusAddress,\r | |
402 | OUT VOID *Buffer,\r | |
403 | OUT RETURN_STATUS *Status OPTIONAL\r | |
404 | )\r | |
405 | {\r | |
406 | UINTN Length;\r | |
407 | \r | |
408 | ASSERT (Buffer != NULL);\r | |
409 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) >= 1);\r | |
410 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) <= 32);\r | |
66eebcf9 | 411 | ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);\r |
a67d1f18 | 412 | \r |
413 | Length = SMBUS_LIB_LENGTH (SmBusAddress);\r | |
414 | return InternalSmBusExec (EfiSmbusWriteBlock, SmBusAddress, Length, Buffer, Status);\r | |
415 | }\r | |
416 | \r | |
417 | /**\r | |
418 | Executes an SMBUS block process call command.\r | |
419 | \r | |
420 | Executes an SMBUS block process call command on the SMBUS device specified by SmBusAddress.\r | |
421 | The SMBUS slave address, SMBUS command, and SMBUS length fields of SmBusAddress are required.\r | |
422 | Bytes are written to the SMBUS from WriteBuffer. Bytes are then read from the SMBUS into ReadBuffer.\r | |
423 | If Status is not NULL, then the status of the executed command is returned in Status.\r | |
424 | It is the caller's responsibility to make sure ReadBuffer is large enough for the total number of bytes read.\r | |
425 | SMBUS supports a maximum transfer size of 32 bytes, so Buffer does not need to be any larger than 32 bytes.\r | |
426 | If Length in SmBusAddress is zero or greater than 32, then ASSERT().\r | |
427 | If WriteBuffer is NULL, then ASSERT().\r | |
428 | If ReadBuffer is NULL, then ASSERT().\r | |
429 | If any reserved bits of SmBusAddress are set, then ASSERT().\r | |
430 | \r | |
431 | @param SmBusAddress Address that encodes the SMBUS Slave Address,\r | |
432 | SMBUS Command, SMBUS Data Length, and PEC.\r | |
433 | @param WriteBuffer Pointer to the buffer of bytes to write to the SMBUS.\r | |
434 | @param ReadBuffer Pointer to the buffer of bytes to read from the SMBUS.\r | |
435 | @param Status Return status for the executed command.\r | |
436 | This is an optional parameter and may be NULL.\r | |
437 | \r | |
438 | @return The number of bytes written.\r | |
439 | \r | |
440 | **/\r | |
441 | UINTN\r | |
442 | EFIAPI\r | |
443 | SmBusBlockProcessCall (\r | |
444 | IN UINTN SmBusAddress,\r | |
445 | IN VOID *WriteBuffer,\r | |
446 | OUT VOID *ReadBuffer,\r | |
447 | OUT RETURN_STATUS *Status OPTIONAL\r | |
448 | )\r | |
449 | {\r | |
450 | UINTN Length;\r | |
451 | \r | |
452 | ASSERT (WriteBuffer != NULL);\r | |
453 | ASSERT (ReadBuffer != NULL);\r | |
454 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) >= 1);\r | |
455 | ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) <= 32);\r | |
66eebcf9 | 456 | ASSERT (SMBUS_LIB_RESERVED (SmBusAddress) == 0);\r |
a67d1f18 | 457 | \r |
458 | Length = SMBUS_LIB_LENGTH (SmBusAddress);\r | |
459 | //\r | |
460 | // Assuming that ReadBuffer is large enough to save another memory copy.\r | |
461 | //\r | |
462 | ReadBuffer = CopyMem (ReadBuffer, WriteBuffer, Length);\r | |
463 | return InternalSmBusExec (EfiSmbusBWBRProcessCall, SmBusAddress, Length, ReadBuffer, Status);\r | |
464 | }\r |