| | 1 | /** @file\r |
| | 2 | I/O Library. The implementations are based on EFI_PEI_SERVICE->CpuIo interface.\r |
| | 3 | \r |
| | 4 | Copyright (c) 2006, Intel Corporation<BR>\r |
| | 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 |
| | 12 | \r |
| | 13 | **/\r |
| | 14 | \r |
| | 15 | \r |
| | 16 | #include <PiPei.h>\r |
| | 17 | \r |
| | 18 | #include <Library/IoLib.h>\r |
| | 19 | #include <Library/DebugLib.h>\r |
| | 20 | #include <Library/BaseLib.h>\r |
| | 21 | #include <Library/PeiServicesTablePointerLib.h>\r |
| | 22 | \r |
| | 23 | /**\r |
| | 24 | Reads an 8-bit I/O port.\r |
| | 25 | \r |
| | 26 | Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned.\r |
| | 27 | This function must guarantee that all I/O read and write operations are\r |
| | 28 | serialized.\r |
| | 29 | \r |
| | 30 | If 8-bit I/O port operations are not supported, then ASSERT().\r |
| | 31 | \r |
| | 32 | @param Port The I/O port to read.\r |
| | 33 | \r |
| | 34 | @return The value read from Port.\r |
| | 35 | \r |
| | 36 | **/\r |
| | 37 | UINT8\r |
| | 38 | EFIAPI\r |
| | 39 | IoRead8 (\r |
| | 40 | IN UINTN Port\r |
| | 41 | )\r |
| | 42 | {\r |
| | 43 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 44 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 45 | \r |
| | 46 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 47 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 48 | ASSERT (CpuIo != NULL);\r |
| | 49 | \r |
| | 50 | return CpuIo->IoRead8 (PeiServices, CpuIo, (UINT64) Port);\r |
| | 51 | }\r |
| | 52 | \r |
| | 53 | /**\r |
| | 54 | Writes an 8-bit I/O port.\r |
| | 55 | \r |
| | 56 | Writes the 8-bit I/O port specified by Port with the value specified by Value\r |
| | 57 | and returns Value. This function must guarantee that all I/O read and write\r |
| | 58 | operations are serialized.\r |
| | 59 | \r |
| | 60 | If 8-bit I/O port operations are not supported, then ASSERT().\r |
| | 61 | \r |
| | 62 | @param Port The I/O port to write.\r |
| | 63 | @param Value The value to write to the I/O port.\r |
| | 64 | \r |
| | 65 | @return The value written the I/O port.\r |
| | 66 | \r |
| | 67 | **/\r |
| | 68 | UINT8\r |
| | 69 | EFIAPI\r |
| | 70 | IoWrite8 (\r |
| | 71 | IN UINTN Port,\r |
| | 72 | IN UINT8 Value\r |
| | 73 | )\r |
| | 74 | {\r |
| | 75 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 76 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 77 | \r |
| | 78 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 79 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 80 | ASSERT (CpuIo != NULL);\r |
| | 81 | \r |
| | 82 | CpuIo->IoWrite8 (PeiServices, CpuIo, (UINT64) Port, Value);\r |
| | 83 | return Value;\r |
| | 84 | }\r |
| | 85 | \r |
| | 86 | /**\r |
| | 87 | Reads a 16-bit I/O port.\r |
| | 88 | \r |
| | 89 | Reads the 16-bit I/O port specified by Port. The 16-bit read value is returned.\r |
| | 90 | This function must guarantee that all I/O read and write operations are\r |
| | 91 | serialized.\r |
| | 92 | \r |
| | 93 | If 16-bit I/O port operations are not supported, then ASSERT().\r |
| | 94 | \r |
| | 95 | @param Port The I/O port to read.\r |
| | 96 | \r |
| | 97 | @return The value read from Port.\r |
| | 98 | \r |
| | 99 | **/\r |
| | 100 | UINT16\r |
| | 101 | EFIAPI\r |
| | 102 | IoRead16 (\r |
| | 103 | IN UINTN Port\r |
| | 104 | )\r |
| | 105 | {\r |
| | 106 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 107 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 108 | \r |
| | 109 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 110 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 111 | ASSERT (CpuIo != NULL);\r |
| | 112 | //\r |
| | 113 | // Make sure Port is aligned on a 16-bit boundary.\r |
| | 114 | //\r |
| | 115 | ASSERT ((Port & 1) == 0);\r |
| | 116 | return CpuIo->IoRead16 (PeiServices, CpuIo, (UINT64) Port);\r |
| | 117 | }\r |
| | 118 | \r |
| | 119 | /**\r |
| | 120 | Writes a 16-bit I/O port.\r |
| | 121 | \r |
| | 122 | Writes the 16-bit I/O port specified by Port with the value specified by Value\r |
| | 123 | and returns Value. This function must guarantee that all I/O read and write\r |
| | 124 | operations are serialized.\r |
| | 125 | \r |
| | 126 | If 16-bit I/O port operations are not supported, then ASSERT().\r |
| | 127 | \r |
| | 128 | @param Port The I/O port to write.\r |
| | 129 | @param Value The value to write to the I/O port.\r |
| | 130 | \r |
| | 131 | @return The value written the I/O port.\r |
| | 132 | \r |
| | 133 | **/\r |
| | 134 | UINT16\r |
| | 135 | EFIAPI\r |
| | 136 | IoWrite16 (\r |
| | 137 | IN UINTN Port,\r |
| | 138 | IN UINT16 Value\r |
| | 139 | )\r |
| | 140 | {\r |
| | 141 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 142 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 143 | \r |
| | 144 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 145 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 146 | ASSERT (CpuIo != NULL);\r |
| | 147 | //\r |
| | 148 | // Make sure Port is aligned on a 16-bit boundary.\r |
| | 149 | //\r |
| | 150 | ASSERT ((Port & 1) == 0);\r |
| | 151 | CpuIo->IoWrite16 (PeiServices, CpuIo, (UINT64) Port, Value);\r |
| | 152 | return Value;\r |
| | 153 | }\r |
| | 154 | \r |
| | 155 | /**\r |
| | 156 | Reads a 32-bit I/O port.\r |
| | 157 | \r |
| | 158 | Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned.\r |
| | 159 | This function must guarantee that all I/O read and write operations are\r |
| | 160 | serialized.\r |
| | 161 | \r |
| | 162 | If 32-bit I/O port operations are not supported, then ASSERT().\r |
| | 163 | \r |
| | 164 | @param Port The I/O port to read.\r |
| | 165 | \r |
| | 166 | @return The value read from Port.\r |
| | 167 | \r |
| | 168 | **/\r |
| | 169 | UINT32\r |
| | 170 | EFIAPI\r |
| | 171 | IoRead32 (\r |
| | 172 | IN UINTN Port\r |
| | 173 | )\r |
| | 174 | {\r |
| | 175 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 176 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 177 | \r |
| | 178 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 179 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 180 | ASSERT (CpuIo != NULL);\r |
| | 181 | //\r |
| | 182 | // Make sure Port is aligned on a 32-bit boundary.\r |
| | 183 | //\r |
| | 184 | ASSERT ((Port & 3) == 0);\r |
| | 185 | return CpuIo->IoRead32 (PeiServices, CpuIo, (UINT64) Port);\r |
| | 186 | }\r |
| | 187 | \r |
| | 188 | /**\r |
| | 189 | Writes a 32-bit I/O port.\r |
| | 190 | \r |
| | 191 | Writes the 32-bit I/O port specified by Port with the value specified by Value\r |
| | 192 | and returns Value. This function must guarantee that all I/O read and write\r |
| | 193 | operations are serialized.\r |
| | 194 | \r |
| | 195 | If 32-bit I/O port operations are not supported, then ASSERT().\r |
| | 196 | \r |
| | 197 | @param Port The I/O port to write.\r |
| | 198 | @param Value The value to write to the I/O port.\r |
| | 199 | \r |
| | 200 | @return The value written the I/O port.\r |
| | 201 | \r |
| | 202 | **/\r |
| | 203 | UINT32\r |
| | 204 | EFIAPI\r |
| | 205 | IoWrite32 (\r |
| | 206 | IN UINTN Port,\r |
| | 207 | IN UINT32 Value\r |
| | 208 | )\r |
| | 209 | {\r |
| | 210 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 211 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 212 | \r |
| | 213 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 214 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 215 | ASSERT (CpuIo != NULL);\r |
| | 216 | //\r |
| | 217 | // Make sure Port is aligned on a 32-bit boundary.\r |
| | 218 | //\r |
| | 219 | ASSERT ((Port & 3) == 0);\r |
| | 220 | CpuIo->IoWrite32 (PeiServices, CpuIo, (UINT64) Port, Value);\r |
| | 221 | return Value;\r |
| | 222 | }\r |
| | 223 | \r |
| | 224 | /**\r |
| | 225 | Reads a 64-bit I/O port.\r |
| | 226 | \r |
| | 227 | Reads the 64-bit I/O port specified by Port. The 64-bit read value is returned.\r |
| | 228 | This function must guarantee that all I/O read and write operations are\r |
| | 229 | serialized.\r |
| | 230 | \r |
| | 231 | If 64-bit I/O port operations are not supported, then ASSERT().\r |
| | 232 | \r |
| | 233 | @param Port The I/O port to read.\r |
| | 234 | \r |
| | 235 | @return The value read from Port.\r |
| | 236 | \r |
| | 237 | **/\r |
| | 238 | UINT64\r |
| | 239 | EFIAPI\r |
| | 240 | IoRead64 (\r |
| | 241 | IN UINTN Port\r |
| | 242 | )\r |
| | 243 | {\r |
| | 244 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 245 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 246 | \r |
| | 247 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 248 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 249 | ASSERT (CpuIo != NULL);\r |
| | 250 | //\r |
| | 251 | // Make sure Port is aligned on a 64-bit boundary.\r |
| | 252 | //\r |
| | 253 | ASSERT ((Port & 7) == 0);\r |
| | 254 | return CpuIo->IoRead64 (PeiServices, CpuIo, (UINT64) Port);\r |
| | 255 | }\r |
| | 256 | \r |
| | 257 | /**\r |
| | 258 | Writes a 64-bit I/O port.\r |
| | 259 | \r |
| | 260 | Writes the 64-bit I/O port specified by Port with the value specified by Value\r |
| | 261 | and returns Value. This function must guarantee that all I/O read and write\r |
| | 262 | operations are serialized.\r |
| | 263 | \r |
| | 264 | If 64-bit I/O port operations are not supported, then ASSERT().\r |
| | 265 | \r |
| | 266 | @param Port The I/O port to write.\r |
| | 267 | @param Value The value to write to the I/O port.\r |
| | 268 | \r |
| | 269 | @return The value written the I/O port.\r |
| | 270 | \r |
| | 271 | **/\r |
| | 272 | UINT64\r |
| | 273 | EFIAPI\r |
| | 274 | IoWrite64 (\r |
| | 275 | IN UINTN Port,\r |
| | 276 | IN UINT64 Value\r |
| | 277 | )\r |
| | 278 | {\r |
| | 279 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 280 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 281 | \r |
| | 282 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 283 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 284 | ASSERT (CpuIo != NULL);\r |
| | 285 | //\r |
| | 286 | // Make sure Port is aligned on a 64-bit boundary.\r |
| | 287 | //\r |
| | 288 | ASSERT ((Port & 7) == 0);\r |
| | 289 | CpuIo->IoWrite64 (PeiServices, CpuIo, (UINT64) Port, Value);\r |
| | 290 | return Value;;\r |
| | 291 | }\r |
| | 292 | \r |
| | 293 | /**\r |
| | 294 | Reads an 8-bit MMIO register.\r |
| | 295 | \r |
| | 296 | Reads the 8-bit MMIO register specified by Address. The 8-bit read value is\r |
| | 297 | returned. This function must guarantee that all MMIO read and write\r |
| | 298 | operations are serialized.\r |
| | 299 | \r |
| | 300 | If 8-bit MMIO register operations are not supported, then ASSERT().\r |
| | 301 | \r |
| | 302 | @param Address The MMIO register to read.\r |
| | 303 | \r |
| | 304 | @return The value read from Port.\r |
| | 305 | \r |
| | 306 | **/\r |
| | 307 | UINT8\r |
| | 308 | EFIAPI\r |
| | 309 | MmioRead8 (\r |
| | 310 | IN UINTN Address\r |
| | 311 | )\r |
| | 312 | {\r |
| | 313 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 314 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 315 | \r |
| | 316 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 317 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 318 | ASSERT (CpuIo != NULL);\r |
| | 319 | \r |
| | 320 | return CpuIo->MemRead8 (PeiServices, CpuIo, (UINT64) Address);\r |
| | 321 | }\r |
| | 322 | \r |
| | 323 | /**\r |
| | 324 | Writes an 8-bit MMIO register.\r |
| | 325 | \r |
| | 326 | Writes the 8-bit MMIO register specified by Address with the value specified\r |
| | 327 | by Value and returns Value. This function must guarantee that all MMIO read\r |
| | 328 | and write operations are serialized.\r |
| | 329 | \r |
| | 330 | If 8-bit MMIO register operations are not supported, then ASSERT().\r |
| | 331 | \r |
| | 332 | @param Address The MMIO register to write.\r |
| | 333 | @param Value The value to write to the MMIO register.\r |
| | 334 | \r |
| | 335 | @return The Value written back to Mmio register.\r |
| | 336 | **/\r |
| | 337 | UINT8\r |
| | 338 | EFIAPI\r |
| | 339 | MmioWrite8 (\r |
| | 340 | IN UINTN Address,\r |
| | 341 | IN UINT8 Value\r |
| | 342 | )\r |
| | 343 | {\r |
| | 344 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 345 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 346 | \r |
| | 347 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 348 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 349 | ASSERT (CpuIo != NULL);\r |
| | 350 | \r |
| | 351 | CpuIo->MemWrite8 (PeiServices, CpuIo, (UINT64) Address, Value);\r |
| | 352 | return Value;\r |
| | 353 | }\r |
| | 354 | \r |
| | 355 | /**\r |
| | 356 | Reads a 16-bit MMIO register.\r |
| | 357 | \r |
| | 358 | Reads the 16-bit MMIO register specified by Address. The 16-bit read value is\r |
| | 359 | returned. This function must guarantee that all MMIO read and write\r |
| | 360 | operations are serialized.\r |
| | 361 | \r |
| | 362 | If 16-bit MMIO register operations are not supported, then ASSERT().\r |
| | 363 | \r |
| | 364 | @param Address The MMIO register to read.\r |
| | 365 | \r |
| | 366 | @return The value read from Address.\r |
| | 367 | \r |
| | 368 | **/\r |
| | 369 | UINT16\r |
| | 370 | EFIAPI\r |
| | 371 | MmioRead16 (\r |
| | 372 | IN UINTN Address\r |
| | 373 | )\r |
| | 374 | {\r |
| | 375 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 376 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 377 | \r |
| | 378 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 379 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 380 | ASSERT (CpuIo != NULL);\r |
| | 381 | //\r |
| | 382 | // Make sure Address is aligned on a 16-bit boundary.\r |
| | 383 | //\r |
| | 384 | ASSERT ((Address & 1) == 0);\r |
| | 385 | return CpuIo->MemRead16 (PeiServices, CpuIo, (UINT64) Address);\r |
| | 386 | \r |
| | 387 | }\r |
| | 388 | \r |
| | 389 | /**\r |
| | 390 | Writes a 16-bit MMIO register.\r |
| | 391 | \r |
| | 392 | Writes the 16-bit MMIO register specified by Address with the value specified\r |
| | 393 | by Value and returns Value. This function must guarantee that all MMIO read\r |
| | 394 | and write operations are serialized.\r |
| | 395 | \r |
| | 396 | If 16-bit MMIO register operations are not supported, then ASSERT().\r |
| | 397 | \r |
| | 398 | @param Address The MMIO register to write.\r |
| | 399 | @param Value The value to write to the MMIO register.\r |
| | 400 | \r |
| | 401 | @return The Value written back to Mmio register\r |
| | 402 | \r |
| | 403 | **/\r |
| | 404 | UINT16\r |
| | 405 | EFIAPI\r |
| | 406 | MmioWrite16 (\r |
| | 407 | IN UINTN Address,\r |
| | 408 | IN UINT16 Value\r |
| | 409 | )\r |
| | 410 | {\r |
| | 411 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 412 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 413 | \r |
| | 414 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 415 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 416 | ASSERT (CpuIo != NULL);\r |
| | 417 | //\r |
| | 418 | // Make sure Address is aligned on a 16-bit boundary.\r |
| | 419 | //\r |
| | 420 | ASSERT ((Address & 1) == 0);\r |
| | 421 | CpuIo->MemWrite16 (PeiServices, CpuIo, (UINT64) Address, Value);\r |
| | 422 | return Value;\r |
| | 423 | }\r |
| | 424 | \r |
| | 425 | /**\r |
| | 426 | Reads a 32-bit MMIO register.\r |
| | 427 | \r |
| | 428 | Reads the 32-bit MMIO register specified by Address. The 32-bit read value is\r |
| | 429 | returned. This function must guarantee that all MMIO read and write\r |
| | 430 | operations are serialized.\r |
| | 431 | \r |
| | 432 | If 32-bit MMIO register operations are not supported, then ASSERT().\r |
| | 433 | \r |
| | 434 | @param Address The MMIO register to read.\r |
| | 435 | \r |
| | 436 | @return The value read from Address.\r |
| | 437 | \r |
| | 438 | **/\r |
| | 439 | UINT32\r |
| | 440 | EFIAPI\r |
| | 441 | MmioRead32 (\r |
| | 442 | IN UINTN Address\r |
| | 443 | )\r |
| | 444 | {\r |
| | 445 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 446 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 447 | \r |
| | 448 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 449 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 450 | ASSERT (CpuIo != NULL);\r |
| | 451 | //\r |
| | 452 | // Make sure Address is aligned on a 32-bit boundary.\r |
| | 453 | //\r |
| | 454 | ASSERT ((Address & 3) == 0);\r |
| | 455 | return CpuIo->MemRead32 (PeiServices, CpuIo, (UINT64) Address);\r |
| | 456 | \r |
| | 457 | }\r |
| | 458 | \r |
| | 459 | /**\r |
| | 460 | Writes a 32-bit MMIO register.\r |
| | 461 | \r |
| | 462 | Writes the 32-bit MMIO register specified by Address with the value specified\r |
| | 463 | by Value and returns Value. This function must guarantee that all MMIO read\r |
| | 464 | and write operations are serialized.\r |
| | 465 | \r |
| | 466 | If 32-bit MMIO register operations are not supported, then ASSERT().\r |
| | 467 | \r |
| | 468 | @param Address The MMIO register to write.\r |
| | 469 | @param Value The value to write to the MMIO register.\r |
| | 470 | \r |
| | 471 | @return The Value written back to Mmio register\r |
| | 472 | \r |
| | 473 | **/\r |
| | 474 | UINT32\r |
| | 475 | EFIAPI\r |
| | 476 | MmioWrite32 (\r |
| | 477 | IN UINTN Address,\r |
| | 478 | IN UINT32 Value\r |
| | 479 | )\r |
| | 480 | {\r |
| | 481 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 482 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 483 | \r |
| | 484 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 485 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 486 | ASSERT (CpuIo != NULL);\r |
| | 487 | //\r |
| | 488 | // Make sure Address is aligned on a 32-bit boundary.\r |
| | 489 | //\r |
| | 490 | ASSERT ((Address & 3) == 0);\r |
| | 491 | CpuIo->MemWrite32 (PeiServices, CpuIo, (UINT64) Address, Value);\r |
| | 492 | return Value;\r |
| | 493 | }\r |
| | 494 | \r |
| | 495 | /**\r |
| | 496 | Reads a 64-bit MMIO register.\r |
| | 497 | \r |
| | 498 | Reads the 64-bit MMIO register specified by Address. The 64-bit read value is\r |
| | 499 | returned. This function must guarantee that all MMIO read and write\r |
| | 500 | operations are serialized.\r |
| | 501 | \r |
| | 502 | If 64-bit MMIO register operations are not supported, then ASSERT().\r |
| | 503 | \r |
| | 504 | @param Address The MMIO register to read.\r |
| | 505 | \r |
| | 506 | @return The value read from Address.\r |
| | 507 | \r |
| | 508 | **/\r |
| | 509 | UINT64\r |
| | 510 | EFIAPI\r |
| | 511 | MmioRead64 (\r |
| | 512 | IN UINTN Address\r |
| | 513 | )\r |
| | 514 | {\r |
| | 515 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 516 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 517 | \r |
| | 518 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 519 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 520 | ASSERT (CpuIo != NULL);\r |
| | 521 | //\r |
| | 522 | // Make sure Address is aligned on a 64-bit boundary.\r |
| | 523 | //\r |
| | 524 | ASSERT ((Address & (sizeof (UINT64) - 1)) == 0);\r |
| | 525 | return CpuIo->MemRead64 (PeiServices, CpuIo, (UINT64) Address);\r |
| | 526 | \r |
| | 527 | }\r |
| | 528 | \r |
| | 529 | /**\r |
| | 530 | Writes a 64-bit MMIO register.\r |
| | 531 | \r |
| | 532 | Writes the 64-bit MMIO register specified by Address with the value specified\r |
| | 533 | by Value and returns Value. This function must guarantee that all MMIO read\r |
| | 534 | and write operations are serialized.\r |
| | 535 | \r |
| | 536 | If 64-bit MMIO register operations are not supported, then ASSERT().\r |
| | 537 | \r |
| | 538 | @param Address The MMIO register to write.\r |
| | 539 | @param Value The value to write to the MMIO register.\r |
| | 540 | \r |
| | 541 | @return The Value written back to Mmio register\r |
| | 542 | **/\r |
| | 543 | UINT64\r |
| | 544 | EFIAPI\r |
| | 545 | MmioWrite64 (\r |
| | 546 | IN UINTN Address,\r |
| | 547 | IN UINT64 Value\r |
| | 548 | )\r |
| | 549 | {\r |
| | 550 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 551 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 552 | \r |
| | 553 | PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();\r |
| | 554 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 555 | ASSERT (CpuIo != NULL);\r |
| | 556 | //\r |
| | 557 | // Make sure Address is aligned on a 64-bit boundary.\r |
| | 558 | //\r |
| | 559 | ASSERT ((Address & 7) == 0);\r |
| | 560 | CpuIo->MemWrite64 (PeiServices, CpuIo, (UINT64) Address, Value);\r |
| | 561 | return Value;\r |
| | 562 | }\r |
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