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1 | /** @file\r |
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2 | Provides services to access PCI Configuration Space.\r |
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3 | \r |
| 4 | These functions perform PCI configuration cycles using the default PCI configuration \r |
| 5 | access method. This may use I/O ports 0xCF8 and 0xCFC to perform PCI configuration accesses, \r |
| 6 | or it may use MMIO registers relative to the PcdPciExpressBaseAddress, or it may use some \r |
| 7 | alternate access method. Modules will typically use the PCI Library for its PCI configuration \r |
| 8 | accesses. However, if a module requires a mix of PCI access methods, the PCI CF8 Library or \r |
| 9 | PCI Express Library may be used in conjunction with the PCI Library. The functionality of \r |
| 10 | these three libraries is identical. The PCI CF8 Library and PCI Express Library simply use \r |
| 11 | explicit access methods.\r |
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12 | \r |
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13 | Copyright (c) 2006 - 2008, Intel Corporation\r |
| 14 | All rights reserved. This program and the accompanying materials\r |
| 15 | are licensed and made available under the terms and conditions of the BSD License\r |
| 16 | which accompanies this distribution. The full text of the license may be found at\r |
| 17 | http://opensource.org/licenses/bsd-license.php\r |
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18 | \r |
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19 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
| 20 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
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21 | \r |
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22 | **/\r |
| 23 | \r |
| 24 | #ifndef __PCI_LIB_H__\r |
| 25 | #define __PCI_LIB_H__\r |
| 26 | \r |
| 27 | /**\r |
| 28 | Macro that converts PCI Bus, PCI Device, PCI Function and PCI Register to an\r |
| 29 | address that can be passed to the PCI Library functions.\r |
| 30 | \r |
| 31 | @param Bus PCI Bus number. Range 0..255.\r |
| 32 | @param Device PCI Device number. Range 0..31.\r |
| 33 | @param Function PCI Function number. Range 0..7.\r |
| 34 | @param Register PCI Register number. Range 0..255 for PCI. Range 0..4095\r |
| 35 | for PCI Express.\r |
| 36 | \r |
| 37 | @return The encoded PCI address.\r |
| 38 | \r |
| 39 | **/\r |
| 40 | #define PCI_LIB_ADDRESS(Bus,Device,Function,Offset) \\r |
| 41 | (((Offset) & 0xfff) | (((Function) & 0x07) << 12) | (((Device) & 0x1f) << 15) | (((Bus) & 0xff) << 20))\r |
| 42 | \r |
| 43 | /**\r |
| 44 | Reads an 8-bit PCI configuration register.\r |
| 45 | \r |
| 46 | Reads and returns the 8-bit PCI configuration register specified by Address.\r |
| 47 | This function must guarantee that all PCI read and write operations are\r |
| 48 | serialized.\r |
| 49 | \r |
| 50 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 51 | \r |
| 52 | @param Address Address that encodes the PCI Bus, Device, Function and\r |
| 53 | Register.\r |
| 54 | \r |
| 55 | @return The read value from the PCI configuration register.\r |
| 56 | \r |
| 57 | **/\r |
| 58 | UINT8\r |
| 59 | EFIAPI\r |
| 60 | PciRead8 (\r |
| 61 | IN UINTN Address\r |
| 62 | );\r |
| 63 | \r |
| 64 | /**\r |
| 65 | Writes an 8-bit PCI configuration register.\r |
| 66 | \r |
| 67 | Writes the 8-bit PCI configuration register specified by Address with the\r |
| 68 | value specified by Value. Value is returned. This function must guarantee\r |
| 69 | that all PCI read and write operations are serialized.\r |
| 70 | \r |
| 71 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 72 | \r |
| 73 | @param Address Address that encodes the PCI Bus, Device, Function and\r |
| 74 | Register.\r |
| 75 | @param Value The value to write.\r |
| 76 | \r |
| 77 | @return The value written to the PCI configuration register.\r |
| 78 | \r |
| 79 | **/\r |
| 80 | UINT8\r |
| 81 | EFIAPI\r |
| 82 | PciWrite8 (\r |
| 83 | IN UINTN Address,\r |
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84 | IN UINT8 Value\r |
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85 | );\r |
| 86 | \r |
| 87 | /**\r |
| 88 | Performs a bitwise inclusive OR of an 8-bit PCI configuration register with\r |
| 89 | an 8-bit value.\r |
| 90 | \r |
| 91 | Reads the 8-bit PCI configuration register specified by Address, performs a\r |
| 92 | bitwise inclusive OR between the read result and the value specified by\r |
| 93 | OrData, and writes the result to the 8-bit PCI configuration register\r |
| 94 | specified by Address. The value written to the PCI configuration register is\r |
| 95 | returned. This function must guarantee that all PCI read and write operations\r |
| 96 | are serialized.\r |
| 97 | \r |
| 98 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 99 | \r |
| 100 | @param Address Address that encodes the PCI Bus, Device, Function and\r |
| 101 | Register.\r |
| 102 | @param OrData The value to OR with the PCI configuration register.\r |
| 103 | \r |
| 104 | @return The value written back to the PCI configuration register.\r |
| 105 | \r |
| 106 | **/\r |
| 107 | UINT8\r |
| 108 | EFIAPI\r |
| 109 | PciOr8 (\r |
| 110 | IN UINTN Address,\r |
| 111 | IN UINT8 OrData\r |
| 112 | );\r |
| 113 | \r |
| 114 | /**\r |
| 115 | Performs a bitwise AND of an 8-bit PCI configuration register with an 8-bit\r |
| 116 | value.\r |
| 117 | \r |
| 118 | Reads the 8-bit PCI configuration register specified by Address, performs a\r |
| 119 | bitwise AND between the read result and the value specified by AndData, and\r |
| 120 | writes the result to the 8-bit PCI configuration register specified by\r |
| 121 | Address. The value written to the PCI configuration register is returned.\r |
| 122 | This function must guarantee that all PCI read and write operations are\r |
| 123 | serialized.\r |
| 124 | \r |
| 125 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 126 | \r |
| 127 | @param Address Address that encodes the PCI Bus, Device, Function and\r |
| 128 | Register.\r |
| 129 | @param AndData The value to AND with the PCI configuration register.\r |
| 130 | \r |
| 131 | @return The value written back to the PCI configuration register.\r |
| 132 | \r |
| 133 | **/\r |
| 134 | UINT8\r |
| 135 | EFIAPI\r |
| 136 | PciAnd8 (\r |
| 137 | IN UINTN Address,\r |
| 138 | IN UINT8 AndData\r |
| 139 | );\r |
| 140 | \r |
| 141 | /**\r |
| 142 | Performs a bitwise AND of an 8-bit PCI configuration register with an 8-bit\r |
| 143 | value, followed a bitwise inclusive OR with another 8-bit value.\r |
| 144 | \r |
| 145 | Reads the 8-bit PCI configuration register specified by Address, performs a\r |
| 146 | bitwise AND between the read result and the value specified by AndData,\r |
| 147 | performs a bitwise inclusive OR between the result of the AND operation and\r |
| 148 | the value specified by OrData, and writes the result to the 8-bit PCI\r |
| 149 | configuration register specified by Address. The value written to the PCI\r |
| 150 | configuration register is returned. This function must guarantee that all PCI\r |
| 151 | read and write operations are serialized.\r |
| 152 | \r |
| 153 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 154 | \r |
| 155 | @param Address Address that encodes the PCI Bus, Device, Function and\r |
| 156 | Register.\r |
| 157 | @param AndData The value to AND with the PCI configuration register.\r |
| 158 | @param OrData The value to OR with the result of the AND operation.\r |
| 159 | \r |
| 160 | @return The value written back to the PCI configuration register.\r |
| 161 | \r |
| 162 | **/\r |
| 163 | UINT8\r |
| 164 | EFIAPI\r |
| 165 | PciAndThenOr8 (\r |
| 166 | IN UINTN Address,\r |
| 167 | IN UINT8 AndData,\r |
| 168 | IN UINT8 OrData\r |
| 169 | );\r |
| 170 | \r |
| 171 | /**\r |
| 172 | Reads a bit field of a PCI configuration register.\r |
| 173 | \r |
| 174 | Reads the bit field in an 8-bit PCI configuration register. The bit field is\r |
| 175 | specified by the StartBit and the EndBit. The value of the bit field is\r |
| 176 | returned.\r |
| 177 | \r |
| 178 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 179 | If StartBit is greater than 7, then ASSERT().\r |
| 180 | If EndBit is greater than 7, then ASSERT().\r |
| 181 | If EndBit is less than StartBit, then ASSERT().\r |
| 182 | \r |
| 183 | @param Address PCI configuration register to read.\r |
| 184 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
| 185 | Range 0..7.\r |
| 186 | @param EndBit The ordinal of the most significant bit in the bit field.\r |
| 187 | Range 0..7.\r |
| 188 | \r |
| 189 | @return The value of the bit field read from the PCI configuration register.\r |
| 190 | \r |
| 191 | **/\r |
| 192 | UINT8\r |
| 193 | EFIAPI\r |
| 194 | PciBitFieldRead8 (\r |
| 195 | IN UINTN Address,\r |
| 196 | IN UINTN StartBit,\r |
| 197 | IN UINTN EndBit\r |
| 198 | );\r |
| 199 | \r |
| 200 | /**\r |
| 201 | Writes a bit field to a PCI configuration register.\r |
| 202 | \r |
| 203 | Writes Value to the bit field of the PCI configuration register. The bit\r |
| 204 | field is specified by the StartBit and the EndBit. All other bits in the\r |
| 205 | destination PCI configuration register are preserved. The new value of the\r |
| 206 | 8-bit register is returned.\r |
| 207 | \r |
| 208 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 209 | If StartBit is greater than 7, then ASSERT().\r |
| 210 | If EndBit is greater than 7, then ASSERT().\r |
| 211 | If EndBit is less than StartBit, then ASSERT().\r |
| 212 | \r |
| 213 | @param Address PCI configuration register to write.\r |
| 214 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
| 215 | Range 0..7.\r |
| 216 | @param EndBit The ordinal of the most significant bit in the bit field.\r |
| 217 | Range 0..7.\r |
| 218 | @param Value New value of the bit field.\r |
| 219 | \r |
| 220 | @return The value written back to the PCI configuration register.\r |
| 221 | \r |
| 222 | **/\r |
| 223 | UINT8\r |
| 224 | EFIAPI\r |
| 225 | PciBitFieldWrite8 (\r |
| 226 | IN UINTN Address,\r |
| 227 | IN UINTN StartBit,\r |
| 228 | IN UINTN EndBit,\r |
| 229 | IN UINT8 Value\r |
| 230 | );\r |
| 231 | \r |
| 232 | /**\r |
| 233 | Reads a bit field in an 8-bit PCI configuration, performs a bitwise OR, and\r |
| 234 | writes the result back to the bit field in the 8-bit port.\r |
| 235 | \r |
| 236 | Reads the 8-bit PCI configuration register specified by Address, performs a\r |
| 237 | bitwise inclusive OR between the read result and the value specified by\r |
| 238 | OrData, and writes the result to the 8-bit PCI configuration register\r |
| 239 | specified by Address. The value written to the PCI configuration register is\r |
| 240 | returned. This function must guarantee that all PCI read and write operations\r |
| 241 | are serialized. Extra left bits in OrData are stripped.\r |
| 242 | \r |
| 243 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 244 | If StartBit is greater than 7, then ASSERT().\r |
| 245 | If EndBit is greater than 7, then ASSERT().\r |
| 246 | If EndBit is less than StartBit, then ASSERT().\r |
| 247 | \r |
| 248 | @param Address PCI configuration register to write.\r |
| 249 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
| 250 | Range 0..7.\r |
| 251 | @param EndBit The ordinal of the most significant bit in the bit field.\r |
| 252 | Range 0..7.\r |
| 253 | @param OrData The value to OR with the PCI configuration register.\r |
| 254 | \r |
| 255 | @return The value written back to the PCI configuration register.\r |
| 256 | \r |
| 257 | **/\r |
| 258 | UINT8\r |
| 259 | EFIAPI\r |
| 260 | PciBitFieldOr8 (\r |
| 261 | IN UINTN Address,\r |
| 262 | IN UINTN StartBit,\r |
| 263 | IN UINTN EndBit,\r |
| 264 | IN UINT8 OrData\r |
| 265 | );\r |
| 266 | \r |
| 267 | /**\r |
| 268 | Reads a bit field in an 8-bit PCI configuration register, performs a bitwise\r |
| 269 | AND, and writes the result back to the bit field in the 8-bit register.\r |
| 270 | \r |
| 271 | Reads the 8-bit PCI configuration register specified by Address, performs a\r |
| 272 | bitwise AND between the read result and the value specified by AndData, and\r |
| 273 | writes the result to the 8-bit PCI configuration register specified by\r |
| 274 | Address. The value written to the PCI configuration register is returned.\r |
| 275 | This function must guarantee that all PCI read and write operations are\r |
| 276 | serialized. Extra left bits in AndData are stripped.\r |
| 277 | \r |
| 278 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 279 | If StartBit is greater than 7, then ASSERT().\r |
| 280 | If EndBit is greater than 7, then ASSERT().\r |
| 281 | If EndBit is less than StartBit, then ASSERT().\r |
| 282 | \r |
| 283 | @param Address PCI configuration register to write.\r |
| 284 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
| 285 | Range 0..7.\r |
| 286 | @param EndBit The ordinal of the most significant bit in the bit field.\r |
| 287 | Range 0..7.\r |
| 288 | @param AndData The value to AND with the PCI configuration register.\r |
| 289 | \r |
| 290 | @return The value written back to the PCI configuration register.\r |
| 291 | \r |
| 292 | **/\r |
| 293 | UINT8\r |
| 294 | EFIAPI\r |
| 295 | PciBitFieldAnd8 (\r |
| 296 | IN UINTN Address,\r |
| 297 | IN UINTN StartBit,\r |
| 298 | IN UINTN EndBit,\r |
| 299 | IN UINT8 AndData\r |
| 300 | );\r |
| 301 | \r |
| 302 | /**\r |
| 303 | Reads a bit field in an 8-bit port, performs a bitwise AND followed by a\r |
| 304 | bitwise inclusive OR, and writes the result back to the bit field in the\r |
| 305 | 8-bit port.\r |
| 306 | \r |
| 307 | Reads the 8-bit PCI configuration register specified by Address, performs a\r |
| 308 | bitwise AND followed by a bitwise inclusive OR between the read result and\r |
| 309 | the value specified by AndData, and writes the result to the 8-bit PCI\r |
| 310 | configuration register specified by Address. The value written to the PCI\r |
| 311 | configuration register is returned. This function must guarantee that all PCI\r |
| 312 | read and write operations are serialized. Extra left bits in both AndData and\r |
| 313 | OrData are stripped.\r |
| 314 | \r |
| 315 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 316 | If StartBit is greater than 7, then ASSERT().\r |
| 317 | If EndBit is greater than 7, then ASSERT().\r |
| 318 | If EndBit is less than StartBit, then ASSERT().\r |
| 319 | \r |
| 320 | @param Address PCI configuration register to write.\r |
| 321 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
| 322 | Range 0..7.\r |
| 323 | @param EndBit The ordinal of the most significant bit in the bit field.\r |
| 324 | Range 0..7.\r |
| 325 | @param AndData The value to AND with the PCI configuration register.\r |
| 326 | @param OrData The value to OR with the result of the AND operation.\r |
| 327 | \r |
| 328 | @return The value written back to the PCI configuration register.\r |
| 329 | \r |
| 330 | **/\r |
| 331 | UINT8\r |
| 332 | EFIAPI\r |
| 333 | PciBitFieldAndThenOr8 (\r |
| 334 | IN UINTN Address,\r |
| 335 | IN UINTN StartBit,\r |
| 336 | IN UINTN EndBit,\r |
| 337 | IN UINT8 AndData,\r |
| 338 | IN UINT8 OrData\r |
| 339 | );\r |
| 340 | \r |
| 341 | /**\r |
| 342 | Reads a 16-bit PCI configuration register.\r |
| 343 | \r |
| 344 | Reads and returns the 16-bit PCI configuration register specified by Address.\r |
| 345 | This function must guarantee that all PCI read and write operations are\r |
| 346 | serialized.\r |
| 347 | \r |
| 348 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 349 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r |
| 350 | \r |
| 351 | @param Address Address that encodes the PCI Bus, Device, Function and\r |
| 352 | Register.\r |
| 353 | \r |
| 354 | @return The read value from the PCI configuration register.\r |
| 355 | \r |
| 356 | **/\r |
| 357 | UINT16\r |
| 358 | EFIAPI\r |
| 359 | PciRead16 (\r |
| 360 | IN UINTN Address\r |
| 361 | );\r |
| 362 | \r |
| 363 | /**\r |
| 364 | Writes a 16-bit PCI configuration register.\r |
| 365 | \r |
| 366 | Writes the 16-bit PCI configuration register specified by Address with the\r |
| 367 | value specified by Value. Value is returned. This function must guarantee\r |
| 368 | that all PCI read and write operations are serialized.\r |
| 369 | \r |
| 370 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 371 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r |
| 372 | \r |
| 373 | @param Address Address that encodes the PCI Bus, Device, Function and\r |
| 374 | Register.\r |
| 375 | @param Value The value to write.\r |
| 376 | \r |
| 377 | @return The value written to the PCI configuration register.\r |
| 378 | \r |
| 379 | **/\r |
| 380 | UINT16\r |
| 381 | EFIAPI\r |
| 382 | PciWrite16 (\r |
| 383 | IN UINTN Address,\r |
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384 | IN UINT16 Value\r |
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385 | );\r |
| 386 | \r |
| 387 | /**\r |
| 388 | Performs a bitwise inclusive OR of a 16-bit PCI configuration register with\r |
| 389 | a 16-bit value.\r |
| 390 | \r |
| 391 | Reads the 16-bit PCI configuration register specified by Address, performs a\r |
| 392 | bitwise inclusive OR between the read result and the value specified by\r |
| 393 | OrData, and writes the result to the 16-bit PCI configuration register\r |
| 394 | specified by Address. The value written to the PCI configuration register is\r |
| 395 | returned. This function must guarantee that all PCI read and write operations\r |
| 396 | are serialized.\r |
| 397 | \r |
| 398 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 399 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r |
| 400 | \r |
| 401 | @param Address Address that encodes the PCI Bus, Device, Function and\r |
| 402 | Register.\r |
| 403 | @param OrData The value to OR with the PCI configuration register.\r |
| 404 | \r |
| 405 | @return The value written back to the PCI configuration register.\r |
| 406 | \r |
| 407 | **/\r |
| 408 | UINT16\r |
| 409 | EFIAPI\r |
| 410 | PciOr16 (\r |
| 411 | IN UINTN Address,\r |
| 412 | IN UINT16 OrData\r |
| 413 | );\r |
| 414 | \r |
| 415 | /**\r |
| 416 | Performs a bitwise AND of a 16-bit PCI configuration register with a 16-bit\r |
| 417 | value.\r |
| 418 | \r |
| 419 | Reads the 16-bit PCI configuration register specified by Address, performs a\r |
| 420 | bitwise AND between the read result and the value specified by AndData, and\r |
| 421 | writes the result to the 16-bit PCI configuration register specified by\r |
| 422 | Address. The value written to the PCI configuration register is returned.\r |
| 423 | This function must guarantee that all PCI read and write operations are\r |
| 424 | serialized.\r |
| 425 | \r |
| 426 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 427 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r |
| 428 | \r |
| 429 | @param Address Address that encodes the PCI Bus, Device, Function and\r |
| 430 | Register.\r |
| 431 | @param AndData The value to AND with the PCI configuration register.\r |
| 432 | \r |
| 433 | @return The value written back to the PCI configuration register.\r |
| 434 | \r |
| 435 | **/\r |
| 436 | UINT16\r |
| 437 | EFIAPI\r |
| 438 | PciAnd16 (\r |
| 439 | IN UINTN Address,\r |
| 440 | IN UINT16 AndData\r |
| 441 | );\r |
| 442 | \r |
| 443 | /**\r |
| 444 | Performs a bitwise AND of a 16-bit PCI configuration register with a 16-bit\r |
| 445 | value, followed a bitwise inclusive OR with another 16-bit value.\r |
| 446 | \r |
| 447 | Reads the 16-bit PCI configuration register specified by Address, performs a\r |
| 448 | bitwise AND between the read result and the value specified by AndData,\r |
| 449 | performs a bitwise inclusive OR between the result of the AND operation and\r |
| 450 | the value specified by OrData, and writes the result to the 16-bit PCI\r |
| 451 | configuration register specified by Address. The value written to the PCI\r |
| 452 | configuration register is returned. This function must guarantee that all PCI\r |
| 453 | read and write operations are serialized.\r |
| 454 | \r |
| 455 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 456 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r |
| 457 | \r |
| 458 | @param Address Address that encodes the PCI Bus, Device, Function and\r |
| 459 | Register.\r |
| 460 | @param AndData The value to AND with the PCI configuration register.\r |
| 461 | @param OrData The value to OR with the result of the AND operation.\r |
| 462 | \r |
| 463 | @return The value written back to the PCI configuration register.\r |
| 464 | \r |
| 465 | **/\r |
| 466 | UINT16\r |
| 467 | EFIAPI\r |
| 468 | PciAndThenOr16 (\r |
| 469 | IN UINTN Address,\r |
| 470 | IN UINT16 AndData,\r |
| 471 | IN UINT16 OrData\r |
| 472 | );\r |
| 473 | \r |
| 474 | /**\r |
| 475 | Reads a bit field of a PCI configuration register.\r |
| 476 | \r |
| 477 | Reads the bit field in a 16-bit PCI configuration register. The bit field is\r |
| 478 | specified by the StartBit and the EndBit. The value of the bit field is\r |
| 479 | returned.\r |
| 480 | \r |
| 481 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 482 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r |
| 483 | If StartBit is greater than 15, then ASSERT().\r |
| 484 | If EndBit is greater than 15, then ASSERT().\r |
| 485 | If EndBit is less than StartBit, then ASSERT().\r |
| 486 | \r |
| 487 | @param Address PCI configuration register to read.\r |
| 488 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
| 489 | Range 0..15.\r |
| 490 | @param EndBit The ordinal of the most significant bit in the bit field.\r |
| 491 | Range 0..15.\r |
| 492 | \r |
| 493 | @return The value of the bit field read from the PCI configuration register.\r |
| 494 | \r |
| 495 | **/\r |
| 496 | UINT16\r |
| 497 | EFIAPI\r |
| 498 | PciBitFieldRead16 (\r |
| 499 | IN UINTN Address,\r |
| 500 | IN UINTN StartBit,\r |
| 501 | IN UINTN EndBit\r |
| 502 | );\r |
| 503 | \r |
| 504 | /**\r |
| 505 | Writes a bit field to a PCI configuration register.\r |
| 506 | \r |
| 507 | Writes Value to the bit field of the PCI configuration register. The bit\r |
| 508 | field is specified by the StartBit and the EndBit. All other bits in the\r |
| 509 | destination PCI configuration register are preserved. The new value of the\r |
| 510 | 16-bit register is returned.\r |
| 511 | \r |
| 512 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 513 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r |
| 514 | If StartBit is greater than 15, then ASSERT().\r |
| 515 | If EndBit is greater than 15, then ASSERT().\r |
| 516 | If EndBit is less than StartBit, then ASSERT().\r |
| 517 | \r |
| 518 | @param Address PCI configuration register to write.\r |
| 519 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
| 520 | Range 0..15.\r |
| 521 | @param EndBit The ordinal of the most significant bit in the bit field.\r |
| 522 | Range 0..15.\r |
| 523 | @param Value New value of the bit field.\r |
| 524 | \r |
| 525 | @return The value written back to the PCI configuration register.\r |
| 526 | \r |
| 527 | **/\r |
| 528 | UINT16\r |
| 529 | EFIAPI\r |
| 530 | PciBitFieldWrite16 (\r |
| 531 | IN UINTN Address,\r |
| 532 | IN UINTN StartBit,\r |
| 533 | IN UINTN EndBit,\r |
| 534 | IN UINT16 Value\r |
| 535 | );\r |
| 536 | \r |
| 537 | /**\r |
| 538 | Reads a bit field in a 16-bit PCI configuration, performs a bitwise OR, and\r |
| 539 | writes the result back to the bit field in the 16-bit port.\r |
| 540 | \r |
| 541 | Reads the 16-bit PCI configuration register specified by Address, performs a\r |
| 542 | bitwise inclusive OR between the read result and the value specified by\r |
| 543 | OrData, and writes the result to the 16-bit PCI configuration register\r |
| 544 | specified by Address. The value written to the PCI configuration register is\r |
| 545 | returned. This function must guarantee that all PCI read and write operations\r |
| 546 | are serialized. Extra left bits in OrData are stripped.\r |
| 547 | \r |
| 548 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 549 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r |
| 550 | If StartBit is greater than 15, then ASSERT().\r |
| 551 | If EndBit is greater than 15, then ASSERT().\r |
| 552 | If EndBit is less than StartBit, then ASSERT().\r |
| 553 | \r |
| 554 | @param Address PCI configuration register to write.\r |
| 555 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
| 556 | Range 0..15.\r |
| 557 | @param EndBit The ordinal of the most significant bit in the bit field.\r |
| 558 | Range 0..15.\r |
| 559 | @param OrData The value to OR with the PCI configuration register.\r |
| 560 | \r |
| 561 | @return The value written back to the PCI configuration register.\r |
| 562 | \r |
| 563 | **/\r |
| 564 | UINT16\r |
| 565 | EFIAPI\r |
| 566 | PciBitFieldOr16 (\r |
| 567 | IN UINTN Address,\r |
| 568 | IN UINTN StartBit,\r |
| 569 | IN UINTN EndBit,\r |
| 570 | IN UINT16 OrData\r |
| 571 | );\r |
| 572 | \r |
| 573 | /**\r |
| 574 | Reads a bit field in a 16-bit PCI configuration register, performs a bitwise\r |
| 575 | AND, and writes the result back to the bit field in the 16-bit register.\r |
| 576 | \r |
| 577 | Reads the 16-bit PCI configuration register specified by Address, performs a\r |
| 578 | bitwise AND between the read result and the value specified by AndData, and\r |
| 579 | writes the result to the 16-bit PCI configuration register specified by\r |
| 580 | Address. The value written to the PCI configuration register is returned.\r |
| 581 | This function must guarantee that all PCI read and write operations are\r |
| 582 | serialized. Extra left bits in AndData are stripped.\r |
| 583 | \r |
| 584 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 585 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r |
| 586 | If StartBit is greater than 15, then ASSERT().\r |
| 587 | If EndBit is greater than 15, then ASSERT().\r |
| 588 | If EndBit is less than StartBit, then ASSERT().\r |
| 589 | \r |
| 590 | @param Address PCI configuration register to write.\r |
| 591 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
| 592 | Range 0..15.\r |
| 593 | @param EndBit The ordinal of the most significant bit in the bit field.\r |
| 594 | Range 0..15.\r |
| 595 | @param AndData The value to AND with the PCI configuration register.\r |
| 596 | \r |
| 597 | @return The value written back to the PCI configuration register.\r |
| 598 | \r |
| 599 | **/\r |
| 600 | UINT16\r |
| 601 | EFIAPI\r |
| 602 | PciBitFieldAnd16 (\r |
| 603 | IN UINTN Address,\r |
| 604 | IN UINTN StartBit,\r |
| 605 | IN UINTN EndBit,\r |
| 606 | IN UINT16 AndData\r |
| 607 | );\r |
| 608 | \r |
| 609 | /**\r |
| 610 | Reads a bit field in a 16-bit port, performs a bitwise AND followed by a\r |
| 611 | bitwise inclusive OR, and writes the result back to the bit field in the\r |
| 612 | 16-bit port.\r |
| 613 | \r |
| 614 | Reads the 16-bit PCI configuration register specified by Address, performs a\r |
| 615 | bitwise AND followed by a bitwise inclusive OR between the read result and\r |
| 616 | the value specified by AndData, and writes the result to the 16-bit PCI\r |
| 617 | configuration register specified by Address. The value written to the PCI\r |
| 618 | configuration register is returned. This function must guarantee that all PCI\r |
| 619 | read and write operations are serialized. Extra left bits in both AndData and\r |
| 620 | OrData are stripped.\r |
| 621 | \r |
| 622 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 623 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r |
| 624 | If StartBit is greater than 15, then ASSERT().\r |
| 625 | If EndBit is greater than 15, then ASSERT().\r |
| 626 | If EndBit is less than StartBit, then ASSERT().\r |
| 627 | \r |
| 628 | @param Address PCI configuration register to write.\r |
| 629 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
| 630 | Range 0..15.\r |
| 631 | @param EndBit The ordinal of the most significant bit in the bit field.\r |
| 632 | Range 0..15.\r |
| 633 | @param AndData The value to AND with the PCI configuration register.\r |
| 634 | @param OrData The value to OR with the result of the AND operation.\r |
| 635 | \r |
| 636 | @return The value written back to the PCI configuration register.\r |
| 637 | \r |
| 638 | **/\r |
| 639 | UINT16\r |
| 640 | EFIAPI\r |
| 641 | PciBitFieldAndThenOr16 (\r |
| 642 | IN UINTN Address,\r |
| 643 | IN UINTN StartBit,\r |
| 644 | IN UINTN EndBit,\r |
| 645 | IN UINT16 AndData,\r |
| 646 | IN UINT16 OrData\r |
| 647 | );\r |
| 648 | \r |
| 649 | /**\r |
| 650 | Reads a 32-bit PCI configuration register.\r |
| 651 | \r |
| 652 | Reads and returns the 32-bit PCI configuration register specified by Address.\r |
| 653 | This function must guarantee that all PCI read and write operations are\r |
| 654 | serialized.\r |
| 655 | \r |
| 656 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 657 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r |
| 658 | \r |
| 659 | @param Address Address that encodes the PCI Bus, Device, Function and\r |
| 660 | Register.\r |
| 661 | \r |
| 662 | @return The read value from the PCI configuration register.\r |
| 663 | \r |
| 664 | **/\r |
| 665 | UINT32\r |
| 666 | EFIAPI\r |
| 667 | PciRead32 (\r |
| 668 | IN UINTN Address\r |
| 669 | );\r |
| 670 | \r |
| 671 | /**\r |
| 672 | Writes a 32-bit PCI configuration register.\r |
| 673 | \r |
| 674 | Writes the 32-bit PCI configuration register specified by Address with the\r |
| 675 | value specified by Value. Value is returned. This function must guarantee\r |
| 676 | that all PCI read and write operations are serialized.\r |
| 677 | \r |
| 678 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 679 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r |
| 680 | \r |
| 681 | @param Address Address that encodes the PCI Bus, Device, Function and\r |
| 682 | Register.\r |
| 683 | @param Value The value to write.\r |
| 684 | \r |
| 685 | @return The value written to the PCI configuration register.\r |
| 686 | \r |
| 687 | **/\r |
| 688 | UINT32\r |
| 689 | EFIAPI\r |
| 690 | PciWrite32 (\r |
| 691 | IN UINTN Address,\r |
| 94646ec0 |
692 | IN UINT32 Value\r |
| fb3df220 |
693 | );\r |
| 694 | \r |
| 695 | /**\r |
| 696 | Performs a bitwise inclusive OR of a 32-bit PCI configuration register with\r |
| 697 | a 32-bit value.\r |
| 698 | \r |
| 699 | Reads the 32-bit PCI configuration register specified by Address, performs a\r |
| 700 | bitwise inclusive OR between the read result and the value specified by\r |
| 701 | OrData, and writes the result to the 32-bit PCI configuration register\r |
| 702 | specified by Address. The value written to the PCI configuration register is\r |
| 703 | returned. This function must guarantee that all PCI read and write operations\r |
| 704 | are serialized.\r |
| 705 | \r |
| 706 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 707 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r |
| 708 | \r |
| 709 | @param Address Address that encodes the PCI Bus, Device, Function and\r |
| 710 | Register.\r |
| 711 | @param OrData The value to OR with the PCI configuration register.\r |
| 712 | \r |
| 713 | @return The value written back to the PCI configuration register.\r |
| 714 | \r |
| 715 | **/\r |
| 716 | UINT32\r |
| 717 | EFIAPI\r |
| 718 | PciOr32 (\r |
| 719 | IN UINTN Address,\r |
| 720 | IN UINT32 OrData\r |
| 721 | );\r |
| 722 | \r |
| 723 | /**\r |
| 724 | Performs a bitwise AND of a 32-bit PCI configuration register with a 32-bit\r |
| 725 | value.\r |
| 726 | \r |
| 727 | Reads the 32-bit PCI configuration register specified by Address, performs a\r |
| 728 | bitwise AND between the read result and the value specified by AndData, and\r |
| 729 | writes the result to the 32-bit PCI configuration register specified by\r |
| 730 | Address. The value written to the PCI configuration register is returned.\r |
| 731 | This function must guarantee that all PCI read and write operations are\r |
| 732 | serialized.\r |
| 733 | \r |
| 734 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 735 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r |
| 736 | \r |
| 737 | @param Address Address that encodes the PCI Bus, Device, Function and\r |
| 738 | Register.\r |
| 739 | @param AndData The value to AND with the PCI configuration register.\r |
| 740 | \r |
| 741 | @return The value written back to the PCI configuration register.\r |
| 742 | \r |
| 743 | **/\r |
| 744 | UINT32\r |
| 745 | EFIAPI\r |
| 746 | PciAnd32 (\r |
| 747 | IN UINTN Address,\r |
| 748 | IN UINT32 AndData\r |
| 749 | );\r |
| 750 | \r |
| 751 | /**\r |
| 752 | Performs a bitwise AND of a 32-bit PCI configuration register with a 32-bit\r |
| 753 | value, followed a bitwise inclusive OR with another 32-bit value.\r |
| 754 | \r |
| 755 | Reads the 32-bit PCI configuration register specified by Address, performs a\r |
| 756 | bitwise AND between the read result and the value specified by AndData,\r |
| 757 | performs a bitwise inclusive OR between the result of the AND operation and\r |
| 758 | the value specified by OrData, and writes the result to the 32-bit PCI\r |
| 759 | configuration register specified by Address. The value written to the PCI\r |
| 760 | configuration register is returned. This function must guarantee that all PCI\r |
| 761 | read and write operations are serialized.\r |
| 762 | \r |
| 763 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 764 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r |
| 765 | \r |
| 766 | @param Address Address that encodes the PCI Bus, Device, Function and\r |
| 767 | Register.\r |
| 768 | @param AndData The value to AND with the PCI configuration register.\r |
| 769 | @param OrData The value to OR with the result of the AND operation.\r |
| 770 | \r |
| 771 | @return The value written back to the PCI configuration register.\r |
| 772 | \r |
| 773 | **/\r |
| 774 | UINT32\r |
| 775 | EFIAPI\r |
| 776 | PciAndThenOr32 (\r |
| 777 | IN UINTN Address,\r |
| 778 | IN UINT32 AndData,\r |
| 779 | IN UINT32 OrData\r |
| 780 | );\r |
| 781 | \r |
| 782 | /**\r |
| 783 | Reads a bit field of a PCI configuration register.\r |
| 784 | \r |
| 785 | Reads the bit field in a 32-bit PCI configuration register. The bit field is\r |
| 786 | specified by the StartBit and the EndBit. The value of the bit field is\r |
| 787 | returned.\r |
| 788 | \r |
| 789 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 790 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r |
| 791 | If StartBit is greater than 31, then ASSERT().\r |
| 792 | If EndBit is greater than 31, then ASSERT().\r |
| 793 | If EndBit is less than StartBit, then ASSERT().\r |
| 794 | \r |
| 795 | @param Address PCI configuration register to read.\r |
| 796 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
| 797 | Range 0..31.\r |
| 798 | @param EndBit The ordinal of the most significant bit in the bit field.\r |
| 799 | Range 0..31.\r |
| 800 | \r |
| 801 | @return The value of the bit field read from the PCI configuration register.\r |
| 802 | \r |
| 803 | **/\r |
| 804 | UINT32\r |
| 805 | EFIAPI\r |
| 806 | PciBitFieldRead32 (\r |
| 807 | IN UINTN Address,\r |
| 808 | IN UINTN StartBit,\r |
| 809 | IN UINTN EndBit\r |
| 810 | );\r |
| 811 | \r |
| 812 | /**\r |
| 813 | Writes a bit field to a PCI configuration register.\r |
| 814 | \r |
| 815 | Writes Value to the bit field of the PCI configuration register. The bit\r |
| 816 | field is specified by the StartBit and the EndBit. All other bits in the\r |
| 817 | destination PCI configuration register are preserved. The new value of the\r |
| 818 | 32-bit register is returned.\r |
| 819 | \r |
| 820 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 821 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r |
| 822 | If StartBit is greater than 31, then ASSERT().\r |
| 823 | If EndBit is greater than 31, then ASSERT().\r |
| 824 | If EndBit is less than StartBit, then ASSERT().\r |
| 825 | \r |
| 826 | @param Address PCI configuration register to write.\r |
| 827 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
| 828 | Range 0..31.\r |
| 829 | @param EndBit The ordinal of the most significant bit in the bit field.\r |
| 830 | Range 0..31.\r |
| 831 | @param Value New value of the bit field.\r |
| 832 | \r |
| 833 | @return The value written back to the PCI configuration register.\r |
| 834 | \r |
| 835 | **/\r |
| 836 | UINT32\r |
| 837 | EFIAPI\r |
| 838 | PciBitFieldWrite32 (\r |
| 839 | IN UINTN Address,\r |
| 840 | IN UINTN StartBit,\r |
| 841 | IN UINTN EndBit,\r |
| 842 | IN UINT32 Value\r |
| 843 | );\r |
| 844 | \r |
| 845 | /**\r |
| 846 | Reads a bit field in a 32-bit PCI configuration, performs a bitwise OR, and\r |
| 847 | writes the result back to the bit field in the 32-bit port.\r |
| 848 | \r |
| 849 | Reads the 32-bit PCI configuration register specified by Address, performs a\r |
| 850 | bitwise inclusive OR between the read result and the value specified by\r |
| 851 | OrData, and writes the result to the 32-bit PCI configuration register\r |
| 852 | specified by Address. The value written to the PCI configuration register is\r |
| 853 | returned. This function must guarantee that all PCI read and write operations\r |
| 854 | are serialized. Extra left bits in OrData are stripped.\r |
| 855 | \r |
| 856 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 857 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r |
| 858 | If StartBit is greater than 31, then ASSERT().\r |
| 859 | If EndBit is greater than 31, then ASSERT().\r |
| 860 | If EndBit is less than StartBit, then ASSERT().\r |
| 861 | \r |
| 862 | @param Address PCI configuration register to write.\r |
| 863 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
| 864 | Range 0..31.\r |
| 865 | @param EndBit The ordinal of the most significant bit in the bit field.\r |
| 866 | Range 0..31.\r |
| 867 | @param OrData The value to OR with the PCI configuration register.\r |
| 868 | \r |
| 869 | @return The value written back to the PCI configuration register.\r |
| 870 | \r |
| 871 | **/\r |
| 872 | UINT32\r |
| 873 | EFIAPI\r |
| 874 | PciBitFieldOr32 (\r |
| 875 | IN UINTN Address,\r |
| 876 | IN UINTN StartBit,\r |
| 877 | IN UINTN EndBit,\r |
| 878 | IN UINT32 OrData\r |
| 879 | );\r |
| 880 | \r |
| 881 | /**\r |
| 882 | Reads a bit field in a 32-bit PCI configuration register, performs a bitwise\r |
| 883 | AND, and writes the result back to the bit field in the 32-bit register.\r |
| 884 | \r |
| 885 | Reads the 32-bit PCI configuration register specified by Address, performs a\r |
| 886 | bitwise AND between the read result and the value specified by AndData, and\r |
| 887 | writes the result to the 32-bit PCI configuration register specified by\r |
| 888 | Address. The value written to the PCI configuration register is returned.\r |
| 889 | This function must guarantee that all PCI read and write operations are\r |
| 890 | serialized. Extra left bits in AndData are stripped.\r |
| 891 | \r |
| 892 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 893 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r |
| 894 | If StartBit is greater than 31, then ASSERT().\r |
| 895 | If EndBit is greater than 31, then ASSERT().\r |
| 896 | If EndBit is less than StartBit, then ASSERT().\r |
| 897 | \r |
| 898 | @param Address PCI configuration register to write.\r |
| 899 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
| 900 | Range 0..31.\r |
| 901 | @param EndBit The ordinal of the most significant bit in the bit field.\r |
| 902 | Range 0..31.\r |
| 903 | @param AndData The value to AND with the PCI configuration register.\r |
| 904 | \r |
| 905 | @return The value written back to the PCI configuration register.\r |
| 906 | \r |
| 907 | **/\r |
| 908 | UINT32\r |
| 909 | EFIAPI\r |
| 910 | PciBitFieldAnd32 (\r |
| 911 | IN UINTN Address,\r |
| 912 | IN UINTN StartBit,\r |
| 913 | IN UINTN EndBit,\r |
| 914 | IN UINT32 AndData\r |
| 915 | );\r |
| 916 | \r |
| 917 | /**\r |
| 918 | Reads a bit field in a 32-bit port, performs a bitwise AND followed by a\r |
| 919 | bitwise inclusive OR, and writes the result back to the bit field in the\r |
| 920 | 32-bit port.\r |
| 921 | \r |
| 922 | Reads the 32-bit PCI configuration register specified by Address, performs a\r |
| 923 | bitwise AND followed by a bitwise inclusive OR between the read result and\r |
| 924 | the value specified by AndData, and writes the result to the 32-bit PCI\r |
| 925 | configuration register specified by Address. The value written to the PCI\r |
| 926 | configuration register is returned. This function must guarantee that all PCI\r |
| 927 | read and write operations are serialized. Extra left bits in both AndData and\r |
| 928 | OrData are stripped.\r |
| 929 | \r |
| 930 | If Address > 0x0FFFFFFF, then ASSERT().\r |
| 931 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r |
| 932 | If StartBit is greater than 31, then ASSERT().\r |
| 933 | If EndBit is greater than 31, then ASSERT().\r |
| 934 | If EndBit is less than StartBit, then ASSERT().\r |
| 935 | \r |
| 936 | @param Address PCI configuration register to write.\r |
| 937 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
| 938 | Range 0..31.\r |
| 939 | @param EndBit The ordinal of the most significant bit in the bit field.\r |
| 940 | Range 0..31.\r |
| 941 | @param AndData The value to AND with the PCI configuration register.\r |
| 942 | @param OrData The value to OR with the result of the AND operation.\r |
| 943 | \r |
| 944 | @return The value written back to the PCI configuration register.\r |
| 945 | \r |
| 946 | **/\r |
| 947 | UINT32\r |
| 948 | EFIAPI\r |
| 949 | PciBitFieldAndThenOr32 (\r |
| 950 | IN UINTN Address,\r |
| 951 | IN UINTN StartBit,\r |
| 952 | IN UINTN EndBit,\r |
| 953 | IN UINT32 AndData,\r |
| 954 | IN UINT32 OrData\r |
| 955 | );\r |
| 956 | \r |
| 957 | /**\r |
| 958 | Reads a range of PCI configuration registers into a caller supplied buffer.\r |
| 959 | \r |
| 960 | Reads the range of PCI configuration registers specified by StartAddress and\r |
| 961 | Size into the buffer specified by Buffer. This function only allows the PCI\r |
| 962 | configuration registers from a single PCI function to be read. Size is\r |
| 963 | returned. When possible 32-bit PCI configuration read cycles are used to read\r |
| 964 | from StartAdress to StartAddress + Size. Due to alignment restrictions, 8-bit\r |
| 965 | and 16-bit PCI configuration read cycles may be used at the beginning and the\r |
| 966 | end of the range.\r |
| 967 | \r |
| 968 | If StartAddress > 0x0FFFFFFF, then ASSERT().\r |
| 969 | If ((StartAddress & 0xFFF) + Size) > 0x1000, then ASSERT().\r |
| 970 | If Size > 0 and Buffer is NULL, then ASSERT().\r |
| 971 | \r |
| 972 | @param StartAddress Starting address that encodes the PCI Bus, Device,\r |
| 973 | Function and Register.\r |
| 974 | @param Size Size in bytes of the transfer.\r |
| 975 | @param Buffer Pointer to a buffer receiving the data read.\r |
| 976 | \r |
| 977 | @return Size\r |
| 978 | \r |
| 979 | **/\r |
| 980 | UINTN\r |
| 981 | EFIAPI\r |
| 982 | PciReadBuffer (\r |
| 983 | IN UINTN StartAddress,\r |
| 984 | IN UINTN Size,\r |
| 985 | OUT VOID *Buffer\r |
| 986 | );\r |
| 987 | \r |
| 988 | /**\r |
| 989 | Copies the data in a caller supplied buffer to a specified range of PCI\r |
| 990 | configuration space.\r |
| 991 | \r |
| 992 | Writes the range of PCI configuration registers specified by StartAddress and\r |
| 993 | Size from the buffer specified by Buffer. This function only allows the PCI\r |
| 994 | configuration registers from a single PCI function to be written. Size is\r |
| 995 | returned. When possible 32-bit PCI configuration write cycles are used to\r |
| 996 | write from StartAdress to StartAddress + Size. Due to alignment restrictions,\r |
| 997 | 8-bit and 16-bit PCI configuration write cycles may be used at the beginning\r |
| 998 | and the end of the range.\r |
| 999 | \r |
| 1000 | If StartAddress > 0x0FFFFFFF, then ASSERT().\r |
| 1001 | If ((StartAddress & 0xFFF) + Size) > 0x1000, then ASSERT().\r |
| 1002 | If Size > 0 and Buffer is NULL, then ASSERT().\r |
| 1003 | \r |
| 1004 | @param StartAddress Starting address that encodes the PCI Bus, Device,\r |
| 1005 | Function and Register.\r |
| 1006 | @param Size Size in bytes of the transfer.\r |
| 1007 | @param Buffer Pointer to a buffer containing the data to write.\r |
| 1008 | \r |
| 9199040c |
1009 | @return Size written to StartAddress.\r |
| fb3df220 |
1010 | \r |
| 1011 | **/\r |
| 1012 | UINTN\r |
| 1013 | EFIAPI\r |
| 1014 | PciWriteBuffer (\r |
| 1015 | IN UINTN StartAddress,\r |
| 1016 | IN UINTN Size,\r |
| 1017 | IN VOID *Buffer\r |
| 1018 | );\r |
| 1019 | \r |
| 1020 | #endif\r |
projects / mirror_edk2.git / blame