Subrata Banik | 20fe24b | 2021-12-09 02:46:38 +0530 | [diff] [blame] | 1 | /** @file |
| 2 | Smbus Library Services that conduct SMBus transactions and enable the operatation |
| 3 | to be replayed during an S3 resume. This library class maps directly on top |
| 4 | of the SmbusLib class. |
| 5 | |
| 6 | Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR> |
| 7 | |
| 8 | SPDX-License-Identifier: BSD-2-Clause-Patent |
| 9 | |
| 10 | **/ |
| 11 | |
| 12 | #ifndef __S3_SMBUS_LIB_H__ |
| 13 | #define __S3_SMBUS_LIB_H__ |
| 14 | |
| 15 | /** |
| 16 | Executes an SMBUS quick read command, and saves the value in the S3 script to be replayed |
| 17 | on S3 resume. |
| 18 | |
| 19 | Executes an SMBUS quick read command on the SMBUS device specified by SmBusAddress. |
| 20 | Only the SMBUS slave address field of SmBusAddress is required. |
| 21 | If Status is not NULL, then the status of the executed command is returned in Status. |
| 22 | If PEC is set in SmBusAddress, then ASSERT(). |
| 23 | If Command in SmBusAddress is not zero, then ASSERT(). |
| 24 | If Length in SmBusAddress is not zero, then ASSERT(). |
| 25 | If any reserved bits of SmBusAddress are set, then ASSERT(). |
| 26 | |
| 27 | @param[in] SmBusAddress The address that encodes the SMBUS Slave Address, |
| 28 | SMBUS Command, SMBUS Data Length, and PEC. |
| 29 | @param[out] Status The return status for the executed command. |
| 30 | This is an optional parameter and may be NULL. |
| 31 | RETURN_SUCCESS The SMBUS command was executed. |
| 32 | RETURN_TIMEOUT A timeout occurred while executing the SMBUS command. |
| 33 | RETURN_DEVICE_ERROR The request was not completed because a failure |
| 34 | was recorded in the Host Status Register bit. Device errors are a result |
| 35 | of a transaction collision, illegal command field, unclaimed cycle |
| 36 | (host initiated), or bus error (collision). |
| 37 | RETURN_UNSUPPORTED The SMBus operation is not supported. |
| 38 | |
| 39 | **/ |
| 40 | VOID |
| 41 | EFIAPI |
| 42 | S3SmBusQuickRead ( |
| 43 | IN UINTN SmBusAddress, |
| 44 | OUT RETURN_STATUS *Status OPTIONAL |
| 45 | ); |
| 46 | |
| 47 | /** |
| 48 | Executes an SMBUS quick write command, and saves the value in the S3 script to be replayed |
| 49 | on S3 resume. |
| 50 | |
| 51 | Executes an SMBUS quick write command on the SMBUS device specified by SmBusAddress. |
| 52 | Only the SMBUS slave address field of SmBusAddress is required. |
| 53 | If Status is not NULL, then the status of the executed command is returned in Status. |
| 54 | If PEC is set in SmBusAddress, then ASSERT(). |
| 55 | If Command in SmBusAddress is not zero, then ASSERT(). |
| 56 | If Length in SmBusAddress is not zero, then ASSERT(). |
| 57 | If any reserved bits of SmBusAddress are set, then ASSERT(). |
| 58 | |
| 59 | @param[in] SmBusAddress The address that encodes the SMBUS Slave Address, |
| 60 | SMBUS Command, SMBUS Data Length, and PEC. |
| 61 | @param[out] Status The return status for the executed command. |
| 62 | This is an optional parameter and may be NULL. |
| 63 | RETURN_SUCCESS The SMBUS command was executed. |
| 64 | RETURN_TIMEOUT A timeout occurred while executing the SMBUS command. |
| 65 | RETURN_DEVICE_ERROR The request was not completed because a failure |
| 66 | was recorded in the Host Status Register bit. Device errors are a result |
| 67 | of a transaction collision, illegal command field, unclaimed cycle |
| 68 | (host initiated), or bus error (collision). |
| 69 | RETURN_UNSUPPORTED The SMBus operation is not supported. |
| 70 | |
| 71 | **/ |
| 72 | VOID |
| 73 | EFIAPI |
| 74 | S3SmBusQuickWrite ( |
| 75 | IN UINTN SmBusAddress, |
| 76 | OUT RETURN_STATUS *Status OPTIONAL |
| 77 | ); |
| 78 | |
| 79 | /** |
| 80 | Executes an SMBUS receive byte command, and saves the value in the S3 script to be replayed |
| 81 | on S3 resume. |
| 82 | |
| 83 | Executes an SMBUS receive byte command on the SMBUS device specified by SmBusAddress. |
| 84 | Only the SMBUS slave address field of SmBusAddress is required. |
| 85 | The byte received from the SMBUS is returned. |
| 86 | If Status is not NULL, then the status of the executed command is returned in Status. |
| 87 | If Command in SmBusAddress is not zero, then ASSERT(). |
| 88 | If Length in SmBusAddress is not zero, then ASSERT(). |
| 89 | If any reserved bits of SmBusAddress are set, then ASSERT(). |
| 90 | |
| 91 | @param[in] SmBusAddress The address that encodes the SMBUS Slave Address, |
| 92 | SMBUS Command, SMBUS Data Length, and PEC. |
| 93 | @param[out] Status The return status for the executed command. |
| 94 | This is an optional parameter and may be NULL. |
| 95 | RETURN_SUCCESS The SMBUS command was executed. |
| 96 | RETURN_TIMEOUT A timeout occurred while executing the SMBUS command. |
| 97 | RETURN_DEVICE_ERROR The request was not completed because a failure |
| 98 | was recorded in the Host Status Register bit. Device errors are a result |
| 99 | of a transaction collision, illegal command field, unclaimed cycle |
| 100 | (host initiated), or bus error (collision). |
| 101 | RETURN_CRC_ERROR The checksum is not correct (PEC is incorrect). |
| 102 | RETURN_UNSUPPORTED The SMBus operation is not supported. |
| 103 | |
| 104 | @return The byte received from the SMBUS. |
| 105 | |
| 106 | **/ |
| 107 | UINT8 |
| 108 | EFIAPI |
| 109 | S3SmBusReceiveByte ( |
| 110 | IN UINTN SmBusAddress, |
| 111 | OUT RETURN_STATUS *Status OPTIONAL |
| 112 | ); |
| 113 | |
| 114 | /** |
| 115 | Executes an SMBUS send byte command, and saves the value in the S3 script to be replayed |
| 116 | on S3 resume. |
| 117 | |
| 118 | Executes an SMBUS send byte command on the SMBUS device specified by SmBusAddress. |
| 119 | The byte specified by Value is sent. |
| 120 | Only the SMBUS slave address field of SmBusAddress is required. Value is returned. |
| 121 | If Status is not NULL, then the status of the executed command is returned in Status. |
| 122 | If Command in SmBusAddress is not zero, then ASSERT(). |
| 123 | If Length in SmBusAddress is not zero, then ASSERT(). |
| 124 | If any reserved bits of SmBusAddress are set, then ASSERT(). |
| 125 | |
| 126 | @param[in] SmBusAddress The address that encodes the SMBUS Slave Address, |
| 127 | SMBUS Command, SMBUS Data Length, and PEC. |
| 128 | @param[in] Value The 8-bit value to send. |
| 129 | @param[out] Status The return status for the executed command. |
| 130 | This is an optional parameter and may be NULL. |
| 131 | RETURN_SUCCESS The SMBUS command was executed. |
| 132 | RETURN_TIMEOUT A timeout occurred while executing the SMBUS command. |
| 133 | RETURN_DEVICE_ERROR The request was not completed because a failure |
| 134 | was recorded in the Host Status Register bit. Device errors are a result |
| 135 | of a transaction collision, illegal command field, unclaimed cycle |
| 136 | (host initiated), or bus errors (collisions). |
| 137 | RETURN_CRC_ERROR The checksum is not correct (PEC is incorrect). |
| 138 | RETURN_UNSUPPORTED The SMBus operation is not supported. |
| 139 | |
| 140 | @return The parameter of Value. |
| 141 | |
| 142 | **/ |
| 143 | UINT8 |
| 144 | EFIAPI |
| 145 | S3SmBusSendByte ( |
| 146 | IN UINTN SmBusAddress, |
| 147 | IN UINT8 Value, |
| 148 | OUT RETURN_STATUS *Status OPTIONAL |
| 149 | ); |
| 150 | |
| 151 | /** |
| 152 | Executes an SMBUS read data byte command, and saves the value in the S3 script to be replayed |
| 153 | on S3 resume. |
| 154 | |
| 155 | Executes an SMBUS read data byte command on the SMBUS device specified by SmBusAddress. |
| 156 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required. |
| 157 | The 8-bit value read from the SMBUS is returned. |
| 158 | If Status is not NULL, then the status of the executed command is returned in Status. |
| 159 | If Length in SmBusAddress is not zero, then ASSERT(). |
| 160 | If any reserved bits of SmBusAddress are set, then ASSERT(). |
| 161 | |
| 162 | @param[in] SmBusAddress The address that encodes the SMBUS Slave Address, |
| 163 | SMBUS Command, SMBUS Data Length, and PEC. |
| 164 | @param[out] Status The return status for the executed command. |
| 165 | This is an optional parameter and may be NULL. |
| 166 | RETURN_SUCCESS The SMBUS command was executed. |
| 167 | RETURN_TIMEOUT A timeout occurred while executing the SMBUS command. |
| 168 | RETURN_DEVICE_ERROR The request was not completed because a failure |
| 169 | was recorded in the Host Status Register bit. Device errors are a result |
| 170 | of a transaction collision, illegal command field, unclaimed cycle |
| 171 | (host initiated), or bus error (collision). |
| 172 | RETURN_CRC_ERROR The checksum is not correct (PEC is incorrect). |
| 173 | RETURN_UNSUPPORTED The SMBus operation is not supported. |
| 174 | |
| 175 | @return The byte read from the SMBUS. |
| 176 | |
| 177 | **/ |
| 178 | UINT8 |
| 179 | EFIAPI |
| 180 | S3SmBusReadDataByte ( |
| 181 | IN UINTN SmBusAddress, |
| 182 | OUT RETURN_STATUS *Status OPTIONAL |
| 183 | ); |
| 184 | |
| 185 | /** |
| 186 | Executes an SMBUS write data byte command, and saves the value in the S3 script to be replayed |
| 187 | on S3 resume. |
| 188 | |
| 189 | Executes an SMBUS write data byte command on the SMBUS device specified by SmBusAddress. |
| 190 | The 8-bit value specified by Value is written. |
| 191 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required. |
| 192 | Value is returned. |
| 193 | If Status is not NULL, then the status of the executed command is returned in Status. |
| 194 | If Length in SmBusAddress is not zero, then ASSERT(). |
| 195 | If any reserved bits of SmBusAddress are set, then ASSERT(). |
| 196 | |
| 197 | @param[in] SmBusAddress The address that encodes the SMBUS Slave Address, |
| 198 | SMBUS Command, SMBUS Data Length, and PEC. |
| 199 | @param[in] Value The 8-bit value to write. |
| 200 | @param[out] Status The return status for the executed command. |
| 201 | This is an optional parameter and may be NULL. |
| 202 | RETURN_SUCCESS The SMBUS command was executed. |
| 203 | RETURN_TIMEOUT A timeout occurred while executing the SMBUS command. |
| 204 | RETURN_DEVICE_ERROR The request was not completed because a failure |
| 205 | was recorded in the Host Status Register bit. Device errors are a result |
| 206 | of a transaction collision, illegal command field, unclaimed cycle |
| 207 | (host initiated), or bus error (collision). |
| 208 | RETURN_CRC_ERROR The checksum is not correct (PEC is incorrect). |
| 209 | RETURN_UNSUPPORTED The SMBus operation is not supported. |
| 210 | |
| 211 | @return The parameter of Value. |
| 212 | |
| 213 | **/ |
| 214 | UINT8 |
| 215 | EFIAPI |
| 216 | S3SmBusWriteDataByte ( |
| 217 | IN UINTN SmBusAddress, |
| 218 | IN UINT8 Value, |
| 219 | OUT RETURN_STATUS *Status OPTIONAL |
| 220 | ); |
| 221 | |
| 222 | /** |
| 223 | Executes an SMBUS read data word command, and saves the value in the S3 script to be replayed |
| 224 | on S3 resume. |
| 225 | |
| 226 | Executes an SMBUS read data word command on the SMBUS device specified by SmBusAddress. |
| 227 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required. |
| 228 | The 16-bit value read from the SMBUS is returned. |
| 229 | If Status is not NULL, then the status of the executed command is returned in Status. |
| 230 | If Length in SmBusAddress is not zero, then ASSERT(). |
| 231 | If any reserved bits of SmBusAddress are set, then ASSERT(). |
| 232 | |
| 233 | @param[in] SmBusAddress The address that encodes the SMBUS Slave Address, |
| 234 | SMBUS Command, SMBUS Data Length, and PEC. |
| 235 | @param[out] Status The return status for the executed command. |
| 236 | This is an optional parameter and may be NULL. |
| 237 | RETURN_SUCCESS The SMBUS command was executed. |
| 238 | RETURN_TIMEOUT A timeout occurred while executing the SMBUS command. |
| 239 | RETURN_DEVICE_ERROR The request was not completed because a failure |
| 240 | was recorded in the Host Status Register bit. Device errors are a result |
| 241 | of a transaction collision, illegal command field, unclaimed cycle |
| 242 | (host initiated), or bus error (collision). |
| 243 | RETURN_CRC_ERROR The checksum is not correct (PEC is incorrect). |
| 244 | RETURN_UNSUPPORTED The SMBus operation is not supported. |
| 245 | |
| 246 | @return The byte read from the SMBUS. |
| 247 | |
| 248 | **/ |
| 249 | UINT16 |
| 250 | EFIAPI |
| 251 | S3SmBusReadDataWord ( |
| 252 | IN UINTN SmBusAddress, |
| 253 | OUT RETURN_STATUS *Status OPTIONAL |
| 254 | ); |
| 255 | |
| 256 | /** |
| 257 | Executes an SMBUS write data word command, and saves the value in the S3 script to be replayed |
| 258 | on S3 resume. |
| 259 | |
| 260 | Executes an SMBUS write data word command on the SMBUS device specified by SmBusAddress. |
| 261 | The 16-bit value specified by Value is written. |
| 262 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required. |
| 263 | Value is returned. |
| 264 | If Status is not NULL, then the status of the executed command is returned in Status. |
| 265 | If Length in SmBusAddress is not zero, then ASSERT(). |
| 266 | If any reserved bits of SmBusAddress are set, then ASSERT(). |
| 267 | |
| 268 | @param[in] SmBusAddress The address that encodes the SMBUS Slave Address, |
| 269 | SMBUS Command, SMBUS Data Length, and PEC. |
| 270 | @param[in] Value The 16-bit value to write. |
| 271 | @param[out] Status The return status for the executed command. |
| 272 | This is an optional parameter and may be NULL. |
| 273 | RETURN_SUCCESS The SMBUS command was executed. |
| 274 | RETURN_TIMEOUT A timeout occurred while executing the SMBUS command. |
| 275 | RETURN_DEVICE_ERROR The request was not completed because a failure |
| 276 | was recorded in the Host Status Register bit. Device errors are a result |
| 277 | of a transaction collision, illegal command field, unclaimed cycle |
| 278 | (host initiated), or bus error (collision). |
| 279 | RETURN_CRC_ERROR The checksum is not correct (PEC is incorrect). |
| 280 | RETURN_UNSUPPORTED The SMBus operation is not supported. |
| 281 | |
| 282 | @return The parameter of Value. |
| 283 | |
| 284 | **/ |
| 285 | UINT16 |
| 286 | EFIAPI |
| 287 | S3SmBusWriteDataWord ( |
| 288 | IN UINTN SmBusAddress, |
| 289 | IN UINT16 Value, |
| 290 | OUT RETURN_STATUS *Status OPTIONAL |
| 291 | ); |
| 292 | |
| 293 | /** |
| 294 | Executes an SMBUS process call command, and saves the value in the S3 script to be replayed |
| 295 | on S3 resume. |
| 296 | |
| 297 | Executes an SMBUS process call command on the SMBUS device specified by SmBusAddress. |
| 298 | The 16-bit value specified by Value is written. |
| 299 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required. |
| 300 | The 16-bit value returned by the process call command is returned. |
| 301 | If Status is not NULL, then the status of the executed command is returned in Status. |
| 302 | If Length in SmBusAddress is not zero, then ASSERT(). |
| 303 | If any reserved bits of SmBusAddress are set, then ASSERT(). |
| 304 | |
| 305 | @param[in] SmBusAddress The address that encodes the SMBUS Slave Address, |
| 306 | SMBUS Command, SMBUS Data Length, and PEC. |
| 307 | @param[in] Value The 16-bit value to write. |
| 308 | @param[out] Status The return status for the executed command. |
| 309 | This is an optional parameter and may be NULL. |
| 310 | RETURN_SUCCESS The SMBUS command was executed. |
| 311 | RETURN_TIMEOUT A timeout occurred while executing the SMBUS command. |
| 312 | RETURN_DEVICE_ERROR The request was not completed because a failure |
| 313 | was recorded in the Host Status Register bit. Device errors are a result |
| 314 | of a transaction collision, illegal command field, unclaimed cycle |
| 315 | (host initiated), or bus error (collision). |
| 316 | RETURN_CRC_ERROR The checksum is not correct (PEC is incorrect). |
| 317 | RETURN_UNSUPPORTED The SMBus operation is not supported. |
| 318 | |
| 319 | @return The 16-bit value returned by the process call command. |
| 320 | |
| 321 | **/ |
| 322 | UINT16 |
| 323 | EFIAPI |
| 324 | S3SmBusProcessCall ( |
| 325 | IN UINTN SmBusAddress, |
| 326 | IN UINT16 Value, |
| 327 | OUT RETURN_STATUS *Status OPTIONAL |
| 328 | ); |
| 329 | |
| 330 | /** |
| 331 | Executes an SMBUS read block command, and saves the value in the S3 script to be replayed |
| 332 | on S3 resume. |
| 333 | |
| 334 | Executes an SMBUS read block command on the SMBUS device specified by SmBusAddress. |
| 335 | Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required. |
| 336 | Bytes are read from the SMBUS and stored in Buffer. |
| 337 | The number of bytes read is returned, and will never return a value larger than 32-bytes. |
| 338 | If Status is not NULL, then the status of the executed command is returned in Status. |
| 339 | It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read. |
| 340 | SMBUS supports a maximum transfer size of 32 bytes, so Buffer does not need to be any larger than 32 bytes. |
| 341 | If Length in SmBusAddress is not zero, then ASSERT(). |
| 342 | If Buffer is NULL, then ASSERT(). |
| 343 | If any reserved bits of SmBusAddress are set, then ASSERT(). |
| 344 | |
| 345 | @param[in] SmBusAddress The address that encodes the SMBUS Slave Address, |
| 346 | SMBUS Command, SMBUS Data Length, and PEC. |
| 347 | @param[out] Buffer The pointer to the buffer to store the bytes read from the SMBUS. |
| 348 | @param[out] Status The return status for the executed command. |
| 349 | This is an optional parameter and may be NULL. |
| 350 | RETURN_SUCCESS The SMBUS command was executed. |
| 351 | RETURN_TIMEOUT A timeout occurred while executing the SMBUS command. |
| 352 | RETURN_DEVICE_ERROR The request was not completed because a failure |
| 353 | was recorded in the Host Status Register bit. Device errors are a result |
| 354 | of a transaction collision, illegal command field, unclaimed cycle |
| 355 | (host initiated), or bus error (collision). |
| 356 | RETURN_CRC_ERROR The checksum is not correct (PEC is incorrect). |
| 357 | RETURN_UNSUPPORTED The SMBus operation is not supported. |
| 358 | |
| 359 | @return The number of bytes read. |
| 360 | |
| 361 | **/ |
| 362 | UINTN |
| 363 | EFIAPI |
| 364 | S3SmBusReadBlock ( |
| 365 | IN UINTN SmBusAddress, |
| 366 | OUT VOID *Buffer, |
| 367 | OUT RETURN_STATUS *Status OPTIONAL |
| 368 | ); |
| 369 | |
| 370 | /** |
| 371 | Executes an SMBUS write block command, and saves the value in the S3 script to be replayed |
| 372 | on S3 resume. |
| 373 | |
| 374 | Executes an SMBUS write block command on the SMBUS device specified by SmBusAddress. |
| 375 | The SMBUS slave address, SMBUS command, and SMBUS length fields of SmBusAddress are required. |
| 376 | Bytes are written to the SMBUS from Buffer. |
| 377 | The number of bytes written is returned, and will never return a value larger than 32-bytes. |
| 378 | If Status is not NULL, then the status of the executed command is returned in Status. |
| 379 | If Length in SmBusAddress is zero or greater than 32, then ASSERT(). |
| 380 | If Buffer is NULL, then ASSERT(). |
| 381 | If any reserved bits of SmBusAddress are set, then ASSERT(). |
| 382 | |
| 383 | @param[in] SmBusAddress The address that encodes the SMBUS Slave Address, |
| 384 | SMBUS Command, SMBUS Data Length, and PEC. |
| 385 | @param[out] Buffer The pointer to the buffer to store the bytes read from the SMBUS. |
| 386 | @param[out] Status The return status for the executed command. |
| 387 | This is an optional parameter and may be NULL. |
| 388 | RETURN_TIMEOUT A timeout occurred while executing the SMBUS command. |
| 389 | RETURN_DEVICE_ERROR The request was not completed because a failure |
| 390 | was recorded in the Host Status Register bit. Device errors are a result |
| 391 | of a transaction collision, illegal command field, unclaimed cycle |
| 392 | (host initiated), or bus error (collision). |
| 393 | RETURN_CRC_ERROR The checksum is not correct (PEC is incorrect). |
| 394 | RETURN_UNSUPPORTED The SMBus operation is not supported. |
| 395 | |
| 396 | @return The number of bytes written. |
| 397 | |
| 398 | **/ |
| 399 | UINTN |
| 400 | EFIAPI |
| 401 | S3SmBusWriteBlock ( |
| 402 | IN UINTN SmBusAddress, |
| 403 | OUT VOID *Buffer, |
| 404 | OUT RETURN_STATUS *Status OPTIONAL |
| 405 | ); |
| 406 | |
| 407 | /** |
| 408 | Executes an SMBUS block process call command, and saves the value in the S3 script to be replayed |
| 409 | on S3 resume. |
| 410 | |
| 411 | Executes an SMBUS block process call command on the SMBUS device specified by SmBusAddress. |
| 412 | The SMBUS slave address, SMBUS command, and SMBUS length fields of SmBusAddress are required. |
| 413 | Bytes are written to the SMBUS from WriteBuffer. Bytes are then read from the SMBUS into ReadBuffer. |
| 414 | If Status is not NULL, then the status of the executed command is returned in Status. |
| 415 | It is the caller's responsibility to make sure ReadBuffer is large enough for the total number of bytes read. |
| 416 | SMBUS supports a maximum transfer size of 32 bytes, so Buffer does not need to be any larger than 32 bytes. |
| 417 | If Length in SmBusAddress is zero or greater than 32, then ASSERT(). |
| 418 | If WriteBuffer is NULL, then ASSERT(). |
| 419 | If ReadBuffer is NULL, then ASSERT(). |
| 420 | If any reserved bits of SmBusAddress are set, then ASSERT(). |
| 421 | |
| 422 | @param[in] SmBusAddress The address that encodes the SMBUS Slave Address, |
| 423 | SMBUS Command, SMBUS Data Length, and PEC. |
| 424 | @param[in] WriteBuffer The pointer to the buffer of bytes to write to the SMBUS. |
| 425 | @param[out] ReadBuffer The pointer to the buffer of bytes to read from the SMBUS. |
| 426 | @param[out] Status The return status for the executed command. |
| 427 | This is an optional parameter and may be NULL. |
| 428 | RETURN_TIMEOUT A timeout occurred while executing the SMBUS command. |
| 429 | RETURN_DEVICE_ERROR The request was not completed because a failure |
| 430 | was recorded in the Host Status Register bit. Device errors are a result |
| 431 | of a transaction collision, illegal command field, unclaimed cycle |
| 432 | (host initiated), or bus error (collision). |
| 433 | RETURN_CRC_ERROR The checksum is not correct (PEC is incorrect). |
| 434 | RETURN_UNSUPPORTED The SMBus operation is not supported. |
| 435 | |
| 436 | @return The number of bytes written. |
| 437 | |
| 438 | **/ |
| 439 | UINTN |
| 440 | EFIAPI |
| 441 | S3SmBusBlockProcessCall ( |
| 442 | IN UINTN SmBusAddress, |
| 443 | IN VOID *WriteBuffer, |
| 444 | OUT VOID *ReadBuffer, |
| 445 | OUT RETURN_STATUS *Status OPTIONAL |
| 446 | ); |
| 447 | |
| 448 | #endif |