| | 1 | /** @file\r |
| | 2 | I/O Library. The implementations are based on EFI_PEI_SERVICE->CpuIo interface.\r |
| | 3 | \r |
| | 4 | Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r |
| | 5 | 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.\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 = 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 = 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 | If Port is not aligned on a 16-bit boundary, then ASSERT().\r |
| | 95 | \r |
| | 96 | @param Port The I/O port to read.\r |
| | 97 | \r |
| | 98 | @return The value read.\r |
| | 99 | \r |
| | 100 | **/\r |
| | 101 | UINT16\r |
| | 102 | EFIAPI\r |
| | 103 | IoRead16 (\r |
| | 104 | IN UINTN Port\r |
| | 105 | )\r |
| | 106 | {\r |
| | 107 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 108 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 109 | \r |
| | 110 | PeiServices = GetPeiServicesTablePointer ();\r |
| | 111 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 112 | ASSERT (CpuIo != NULL);\r |
| | 113 | //\r |
| | 114 | // Make sure Port is aligned on a 16-bit boundary.\r |
| | 115 | //\r |
| | 116 | ASSERT ((Port & 1) == 0);\r |
| | 117 | return CpuIo->IoRead16 (PeiServices, CpuIo, (UINT64) Port);\r |
| | 118 | }\r |
| | 119 | \r |
| | 120 | /**\r |
| | 121 | Writes a 16-bit I/O port.\r |
| | 122 | \r |
| | 123 | Writes the 16-bit I/O port specified by Port with the value specified by Value\r |
| | 124 | and returns Value. This function must guarantee that all I/O read and write\r |
| | 125 | operations are serialized.\r |
| | 126 | \r |
| | 127 | If 16-bit I/O port operations are not supported, then ASSERT().\r |
| | 128 | If Port is not aligned on a 16-bit boundary, then ASSERT().\r |
| | 129 | \r |
| | 130 | @param Port The I/O port to write.\r |
| | 131 | @param Value The value to write to the I/O port.\r |
| | 132 | \r |
| | 133 | @return The value written the I/O port.\r |
| | 134 | \r |
| | 135 | **/\r |
| | 136 | UINT16\r |
| | 137 | EFIAPI\r |
| | 138 | IoWrite16 (\r |
| | 139 | IN UINTN Port,\r |
| | 140 | IN UINT16 Value\r |
| | 141 | )\r |
| | 142 | {\r |
| | 143 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 144 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 145 | \r |
| | 146 | PeiServices = GetPeiServicesTablePointer ();\r |
| | 147 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 148 | ASSERT (CpuIo != NULL);\r |
| | 149 | //\r |
| | 150 | // Make sure Port is aligned on a 16-bit boundary.\r |
| | 151 | //\r |
| | 152 | ASSERT ((Port & 1) == 0);\r |
| | 153 | CpuIo->IoWrite16 (PeiServices, CpuIo, (UINT64) Port, Value);\r |
| | 154 | return Value;\r |
| | 155 | }\r |
| | 156 | \r |
| | 157 | /**\r |
| | 158 | Reads a 32-bit I/O port.\r |
| | 159 | \r |
| | 160 | Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned.\r |
| | 161 | This function must guarantee that all I/O read and write operations are\r |
| | 162 | serialized.\r |
| | 163 | \r |
| | 164 | If 32-bit I/O port operations are not supported, then ASSERT().\r |
| | 165 | If Port is not aligned on a 32-bit boundary, then ASSERT().\r |
| | 166 | \r |
| | 167 | @param Port The I/O port to read.\r |
| | 168 | \r |
| | 169 | @return The value read.\r |
| | 170 | \r |
| | 171 | **/\r |
| | 172 | UINT32\r |
| | 173 | EFIAPI\r |
| | 174 | IoRead32 (\r |
| | 175 | IN UINTN Port\r |
| | 176 | )\r |
| | 177 | {\r |
| | 178 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 179 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 180 | \r |
| | 181 | PeiServices = GetPeiServicesTablePointer ();\r |
| | 182 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 183 | ASSERT (CpuIo != NULL);\r |
| | 184 | //\r |
| | 185 | // Make sure Port is aligned on a 32-bit boundary.\r |
| | 186 | //\r |
| | 187 | ASSERT ((Port & 3) == 0);\r |
| | 188 | return CpuIo->IoRead32 (PeiServices, CpuIo, (UINT64) Port);\r |
| | 189 | }\r |
| | 190 | \r |
| | 191 | /**\r |
| | 192 | Writes a 32-bit I/O port.\r |
| | 193 | \r |
| | 194 | Writes the 32-bit I/O port specified by Port with the value specified by Value\r |
| | 195 | and returns Value. This function must guarantee that all I/O read and write\r |
| | 196 | operations are serialized.\r |
| | 197 | \r |
| | 198 | If 32-bit I/O port operations are not supported, then ASSERT().\r |
| | 199 | If Port is not aligned on a 32-bit boundary, then ASSERT().\r |
| | 200 | \r |
| | 201 | @param Port The I/O port to write.\r |
| | 202 | @param Value The value to write to the I/O port.\r |
| | 203 | \r |
| | 204 | @return The value written the I/O port.\r |
| | 205 | \r |
| | 206 | **/\r |
| | 207 | UINT32\r |
| | 208 | EFIAPI\r |
| | 209 | IoWrite32 (\r |
| | 210 | IN UINTN Port,\r |
| | 211 | IN UINT32 Value\r |
| | 212 | )\r |
| | 213 | {\r |
| | 214 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 215 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 216 | \r |
| | 217 | PeiServices = GetPeiServicesTablePointer ();\r |
| | 218 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 219 | ASSERT (CpuIo != NULL);\r |
| | 220 | //\r |
| | 221 | // Make sure Port is aligned on a 32-bit boundary.\r |
| | 222 | //\r |
| | 223 | ASSERT ((Port & 3) == 0);\r |
| | 224 | CpuIo->IoWrite32 (PeiServices, CpuIo, (UINT64) Port, Value);\r |
| | 225 | return Value;\r |
| | 226 | }\r |
| | 227 | \r |
| | 228 | /**\r |
| | 229 | Reads a 64-bit I/O port.\r |
| | 230 | \r |
| | 231 | Reads the 64-bit I/O port specified by Port. The 64-bit read value is returned.\r |
| | 232 | This function must guarantee that all I/O read and write operations are\r |
| | 233 | serialized.\r |
| | 234 | \r |
| | 235 | If 64-bit I/O port operations are not supported, then ASSERT().\r |
| | 236 | If Port is not aligned on a 64-bit boundary, then ASSERT().\r |
| | 237 | \r |
| | 238 | @param Port The I/O port to read.\r |
| | 239 | \r |
| | 240 | @return The value read.\r |
| | 241 | \r |
| | 242 | **/\r |
| | 243 | UINT64\r |
| | 244 | EFIAPI\r |
| | 245 | IoRead64 (\r |
| | 246 | IN UINTN Port\r |
| | 247 | )\r |
| | 248 | {\r |
| | 249 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 250 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 251 | \r |
| | 252 | PeiServices = GetPeiServicesTablePointer ();\r |
| | 253 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 254 | ASSERT (CpuIo != NULL);\r |
| | 255 | //\r |
| | 256 | // Make sure Port is aligned on a 64-bit boundary.\r |
| | 257 | //\r |
| | 258 | ASSERT ((Port & 7) == 0);\r |
| | 259 | return CpuIo->IoRead64 (PeiServices, CpuIo, (UINT64) Port);\r |
| | 260 | }\r |
| | 261 | \r |
| | 262 | /**\r |
| | 263 | Writes a 64-bit I/O port.\r |
| | 264 | \r |
| | 265 | Writes the 64-bit I/O port specified by Port with the value specified by Value\r |
| | 266 | and returns Value. This function must guarantee that all I/O read and write\r |
| | 267 | operations are serialized.\r |
| | 268 | \r |
| | 269 | If 64-bit I/O port operations are not supported, then ASSERT().\r |
| | 270 | If Port is not aligned on a 64-bit boundary, then ASSERT().\r |
| | 271 | \r |
| | 272 | @param Port The I/O port to write.\r |
| | 273 | @param Value The value to write to the I/O port.\r |
| | 274 | \r |
| | 275 | @return The value written the I/O port.\r |
| | 276 | \r |
| | 277 | **/\r |
| | 278 | UINT64\r |
| | 279 | EFIAPI\r |
| | 280 | IoWrite64 (\r |
| | 281 | IN UINTN Port,\r |
| | 282 | IN UINT64 Value\r |
| | 283 | )\r |
| | 284 | {\r |
| | 285 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 286 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 287 | \r |
| | 288 | PeiServices = GetPeiServicesTablePointer ();\r |
| | 289 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 290 | ASSERT (CpuIo != NULL);\r |
| | 291 | //\r |
| | 292 | // Make sure Port is aligned on a 64-bit boundary.\r |
| | 293 | //\r |
| | 294 | ASSERT ((Port & 7) == 0);\r |
| | 295 | CpuIo->IoWrite64 (PeiServices, CpuIo, (UINT64) Port, Value);\r |
| | 296 | return Value;;\r |
| | 297 | }\r |
| | 298 | \r |
| | 299 | /**\r |
| | 300 | Reads an 8-bit MMIO register.\r |
| | 301 | \r |
| | 302 | Reads the 8-bit MMIO register specified by Address. The 8-bit read value is\r |
| | 303 | returned. This function must guarantee that all MMIO read and write\r |
| | 304 | operations are serialized.\r |
| | 305 | \r |
| | 306 | If 8-bit MMIO register operations are not supported, then ASSERT().\r |
| | 307 | \r |
| | 308 | @param Address The MMIO register to read.\r |
| | 309 | \r |
| | 310 | @return The value read.\r |
| | 311 | \r |
| | 312 | **/\r |
| | 313 | UINT8\r |
| | 314 | EFIAPI\r |
| | 315 | MmioRead8 (\r |
| | 316 | IN UINTN Address\r |
| | 317 | )\r |
| | 318 | {\r |
| | 319 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 320 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 321 | \r |
| | 322 | PeiServices = GetPeiServicesTablePointer ();\r |
| | 323 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 324 | ASSERT (CpuIo != NULL);\r |
| | 325 | \r |
| | 326 | return CpuIo->MemRead8 (PeiServices, CpuIo, (UINT64) Address);\r |
| | 327 | }\r |
| | 328 | \r |
| | 329 | /**\r |
| | 330 | Writes an 8-bit MMIO register.\r |
| | 331 | \r |
| | 332 | Writes the 8-bit MMIO register specified by Address with the value specified\r |
| | 333 | by Value and returns Value. This function must guarantee that all MMIO read\r |
| | 334 | and write operations are serialized.\r |
| | 335 | \r |
| | 336 | If 8-bit MMIO register operations are not supported, then ASSERT().\r |
| | 337 | \r |
| | 338 | @param Address The MMIO register to write.\r |
| | 339 | @param Value The value to write to the MMIO register.\r |
| | 340 | \r |
| | 341 | @return Value.\r |
| | 342 | \r |
| | 343 | **/\r |
| | 344 | UINT8\r |
| | 345 | EFIAPI\r |
| | 346 | MmioWrite8 (\r |
| | 347 | IN UINTN Address,\r |
| | 348 | IN UINT8 Value\r |
| | 349 | )\r |
| | 350 | {\r |
| | 351 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 352 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 353 | \r |
| | 354 | PeiServices = GetPeiServicesTablePointer ();\r |
| | 355 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 356 | ASSERT (CpuIo != NULL);\r |
| | 357 | \r |
| | 358 | CpuIo->MemWrite8 (PeiServices, CpuIo, (UINT64) Address, Value);\r |
| | 359 | return Value;\r |
| | 360 | }\r |
| | 361 | \r |
| | 362 | /**\r |
| | 363 | Reads a 16-bit MMIO register.\r |
| | 364 | \r |
| | 365 | Reads the 16-bit MMIO register specified by Address. The 16-bit read value is\r |
| | 366 | returned. This function must guarantee that all MMIO read and write\r |
| | 367 | operations are serialized.\r |
| | 368 | \r |
| | 369 | If 16-bit MMIO register operations are not supported, then ASSERT().\r |
| | 370 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r |
| | 371 | \r |
| | 372 | @param Address The MMIO register to read.\r |
| | 373 | \r |
| | 374 | @return The value read.\r |
| | 375 | \r |
| | 376 | **/\r |
| | 377 | UINT16\r |
| | 378 | EFIAPI\r |
| | 379 | MmioRead16 (\r |
| | 380 | IN UINTN Address\r |
| | 381 | )\r |
| | 382 | {\r |
| | 383 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 384 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 385 | \r |
| | 386 | PeiServices = GetPeiServicesTablePointer ();\r |
| | 387 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 388 | ASSERT (CpuIo != NULL);\r |
| | 389 | //\r |
| | 390 | // Make sure Address is aligned on a 16-bit boundary.\r |
| | 391 | //\r |
| | 392 | ASSERT ((Address & 1) == 0);\r |
| | 393 | return CpuIo->MemRead16 (PeiServices, CpuIo, (UINT64) Address);\r |
| | 394 | \r |
| | 395 | }\r |
| | 396 | \r |
| | 397 | /**\r |
| | 398 | Writes a 16-bit MMIO register.\r |
| | 399 | \r |
| | 400 | Writes the 16-bit MMIO register specified by Address with the value specified\r |
| | 401 | by Value and returns Value. This function must guarantee that all MMIO read\r |
| | 402 | and write operations are serialized.\r |
| | 403 | \r |
| | 404 | If 16-bit MMIO register operations are not supported, then ASSERT().\r |
| | 405 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r |
| | 406 | \r |
| | 407 | @param Address The MMIO register to write.\r |
| | 408 | @param Value The value to write to the MMIO register.\r |
| | 409 | \r |
| | 410 | @return Value.\r |
| | 411 | \r |
| | 412 | **/\r |
| | 413 | UINT16\r |
| | 414 | EFIAPI\r |
| | 415 | MmioWrite16 (\r |
| | 416 | IN UINTN Address,\r |
| | 417 | IN UINT16 Value\r |
| | 418 | )\r |
| | 419 | {\r |
| | 420 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 421 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 422 | \r |
| | 423 | PeiServices = GetPeiServicesTablePointer ();\r |
| | 424 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 425 | ASSERT (CpuIo != NULL);\r |
| | 426 | //\r |
| | 427 | // Make sure Address is aligned on a 16-bit boundary.\r |
| | 428 | //\r |
| | 429 | ASSERT ((Address & 1) == 0);\r |
| | 430 | CpuIo->MemWrite16 (PeiServices, CpuIo, (UINT64) Address, Value);\r |
| | 431 | return Value;\r |
| | 432 | }\r |
| | 433 | \r |
| | 434 | /**\r |
| | 435 | Reads a 32-bit MMIO register.\r |
| | 436 | \r |
| | 437 | Reads the 32-bit MMIO register specified by Address. The 32-bit read value is\r |
| | 438 | returned. This function must guarantee that all MMIO read and write\r |
| | 439 | operations are serialized.\r |
| | 440 | \r |
| | 441 | If 32-bit MMIO register operations are not supported, then ASSERT().\r |
| | 442 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r |
| | 443 | \r |
| | 444 | @param Address The MMIO register to read.\r |
| | 445 | \r |
| | 446 | @return The value read.\r |
| | 447 | \r |
| | 448 | **/\r |
| | 449 | UINT32\r |
| | 450 | EFIAPI\r |
| | 451 | MmioRead32 (\r |
| | 452 | IN UINTN Address\r |
| | 453 | )\r |
| | 454 | {\r |
| | 455 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 456 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 457 | \r |
| | 458 | PeiServices = GetPeiServicesTablePointer ();\r |
| | 459 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 460 | ASSERT (CpuIo != NULL);\r |
| | 461 | //\r |
| | 462 | // Make sure Address is aligned on a 32-bit boundary.\r |
| | 463 | //\r |
| | 464 | ASSERT ((Address & 3) == 0);\r |
| | 465 | return CpuIo->MemRead32 (PeiServices, CpuIo, (UINT64) Address);\r |
| | 466 | \r |
| | 467 | }\r |
| | 468 | \r |
| | 469 | /**\r |
| | 470 | Writes a 32-bit MMIO register.\r |
| | 471 | \r |
| | 472 | Writes the 32-bit MMIO register specified by Address with the value specified\r |
| | 473 | by Value and returns Value. This function must guarantee that all MMIO read\r |
| | 474 | and write operations are serialized.\r |
| | 475 | \r |
| | 476 | If 32-bit MMIO register operations are not supported, then ASSERT().\r |
| | 477 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r |
| | 478 | \r |
| | 479 | @param Address The MMIO register to write.\r |
| | 480 | @param Value The value to write to the MMIO register.\r |
| | 481 | \r |
| | 482 | @return Value.\r |
| | 483 | \r |
| | 484 | **/\r |
| | 485 | UINT32\r |
| | 486 | EFIAPI\r |
| | 487 | MmioWrite32 (\r |
| | 488 | IN UINTN Address,\r |
| | 489 | IN UINT32 Value\r |
| | 490 | )\r |
| | 491 | {\r |
| | 492 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 493 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 494 | \r |
| | 495 | PeiServices = GetPeiServicesTablePointer ();\r |
| | 496 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 497 | ASSERT (CpuIo != NULL);\r |
| | 498 | //\r |
| | 499 | // Make sure Address is aligned on a 32-bit boundary.\r |
| | 500 | //\r |
| | 501 | ASSERT ((Address & 3) == 0);\r |
| | 502 | CpuIo->MemWrite32 (PeiServices, CpuIo, (UINT64) Address, Value);\r |
| | 503 | return Value;\r |
| | 504 | }\r |
| | 505 | \r |
| | 506 | /**\r |
| | 507 | Reads a 64-bit MMIO register.\r |
| | 508 | \r |
| | 509 | Reads the 64-bit MMIO register specified by Address. The 64-bit read value is\r |
| | 510 | returned. This function must guarantee that all MMIO read and write\r |
| | 511 | operations are serialized.\r |
| | 512 | \r |
| | 513 | If 64-bit MMIO register operations are not supported, then ASSERT().\r |
| | 514 | If Address is not aligned on a 64-bit boundary, then ASSERT().\r |
| | 515 | \r |
| | 516 | @param Address The MMIO register to read.\r |
| | 517 | \r |
| | 518 | @return The value read.\r |
| | 519 | \r |
| | 520 | **/\r |
| | 521 | UINT64\r |
| | 522 | EFIAPI\r |
| | 523 | MmioRead64 (\r |
| | 524 | IN UINTN Address\r |
| | 525 | )\r |
| | 526 | {\r |
| | 527 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 528 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 529 | \r |
| | 530 | PeiServices = GetPeiServicesTablePointer ();\r |
| | 531 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 532 | ASSERT (CpuIo != NULL);\r |
| | 533 | //\r |
| | 534 | // Make sure Address is aligned on a 64-bit boundary.\r |
| | 535 | //\r |
| | 536 | ASSERT ((Address & (sizeof (UINT64) - 1)) == 0);\r |
| | 537 | return CpuIo->MemRead64 (PeiServices, CpuIo, (UINT64) Address);\r |
| | 538 | \r |
| | 539 | }\r |
| | 540 | \r |
| | 541 | /**\r |
| | 542 | Writes a 64-bit MMIO register.\r |
| | 543 | \r |
| | 544 | Writes the 64-bit MMIO register specified by Address with the value specified\r |
| | 545 | by Value and returns Value. This function must guarantee that all MMIO read\r |
| | 546 | and write operations are serialized.\r |
| | 547 | \r |
| | 548 | If 64-bit MMIO register operations are not supported, then ASSERT().\r |
| | 549 | If Address is not aligned on a 64-bit boundary, then ASSERT().\r |
| | 550 | \r |
| | 551 | @param Address The MMIO register to write.\r |
| | 552 | @param Value The value to write to the MMIO register.\r |
| | 553 | \r |
| | 554 | **/\r |
| | 555 | UINT64\r |
| | 556 | EFIAPI\r |
| | 557 | MmioWrite64 (\r |
| | 558 | IN UINTN Address,\r |
| | 559 | IN UINT64 Value\r |
| | 560 | )\r |
| | 561 | {\r |
| | 562 | CONST EFI_PEI_SERVICES **PeiServices;\r |
| | 563 | EFI_PEI_CPU_IO_PPI *CpuIo;\r |
| | 564 | \r |
| | 565 | PeiServices = GetPeiServicesTablePointer ();\r |
| | 566 | CpuIo = (*PeiServices)->CpuIo;\r |
| | 567 | ASSERT (CpuIo != NULL);\r |
| | 568 | //\r |
| | 569 | // Make sure Address is aligned on a 64-bit boundary.\r |
| | 570 | //\r |
| | 571 | ASSERT ((Address & 7) == 0);\r |
| | 572 | CpuIo->MemWrite64 (PeiServices, CpuIo, (UINT64) Address, Value);\r |
| | 573 | return Value;\r |
| | 574 | }\r |
projects / mirror_edk2.git / blame_incremental