1 /** @file 2 3 The PCI Root Bridge header file. 4 5 Copyright (c) 1999 - 2016, Intel Corporation. All rights reserved.<BR> 6 This program and the accompanying materials 7 are licensed and made available under the terms and conditions of the BSD License 8 which accompanies this distribution. The full text of the license may be found at 9 http://opensource.org/licenses/bsd-license.php 10 11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 13 14 **/ 15 16 #ifndef _PCI_ROOT_BRIDGE_H_ 17 #define _PCI_ROOT_BRIDGE_H_ 18 19 #include <PiDxe.h> 20 #include <IndustryStandard/Acpi.h> 21 #include <IndustryStandard/Pci.h> 22 23 // 24 // Driver Consumed Protocol Prototypes 25 // 26 #include <Protocol/Metronome.h> 27 #include <Protocol/CpuIo2.h> 28 #include <Protocol/DevicePath.h> 29 #include <Protocol/PciRootBridgeIo.h> 30 #include <Library/DebugLib.h> 31 #include <Library/DevicePathLib.h> 32 #include <Library/BaseMemoryLib.h> 33 #include <Library/DxeServicesTableLib.h> 34 #include <Library/UefiBootServicesTableLib.h> 35 #include <Library/BaseLib.h> 36 #include <Library/PciSegmentLib.h> 37 #include "PciHostResource.h" 38 39 40 typedef enum { 41 IoOperation, 42 MemOperation, 43 PciOperation 44 } OPERATION_TYPE; 45 46 #define MAP_INFO_SIGNATURE SIGNATURE_32 ('_', 'm', 'a', 'p') 47 typedef struct { 48 UINT32 Signature; 49 LIST_ENTRY Link; 50 EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION Operation; 51 UINTN NumberOfBytes; 52 UINTN NumberOfPages; 53 EFI_PHYSICAL_ADDRESS HostAddress; 54 EFI_PHYSICAL_ADDRESS MappedHostAddress; 55 } MAP_INFO; 56 #define MAP_INFO_FROM_LINK(a) CR (a, MAP_INFO, Link, MAP_INFO_SIGNATURE) 57 58 #define PCI_ROOT_BRIDGE_SIGNATURE SIGNATURE_32 ('_', 'p', 'r', 'b') 59 60 typedef struct { 61 UINT32 Signature; 62 LIST_ENTRY Link; 63 EFI_HANDLE Handle; 64 UINT64 AllocationAttributes; 65 UINT64 Attributes; 66 UINT64 Supports; 67 PCI_RES_NODE ResAllocNode[TypeMax]; 68 PCI_ROOT_BRIDGE_APERTURE Bus; 69 PCI_ROOT_BRIDGE_APERTURE Io; 70 PCI_ROOT_BRIDGE_APERTURE Mem; 71 PCI_ROOT_BRIDGE_APERTURE PMem; 72 PCI_ROOT_BRIDGE_APERTURE MemAbove4G; 73 PCI_ROOT_BRIDGE_APERTURE PMemAbove4G; 74 BOOLEAN DmaAbove4G; 75 BOOLEAN NoExtendedConfigSpace; 76 VOID *ConfigBuffer; 77 EFI_DEVICE_PATH_PROTOCOL *DevicePath; 78 CHAR16 *DevicePathStr; 79 EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL RootBridgeIo; 80 81 BOOLEAN ResourceSubmitted; 82 LIST_ENTRY Maps; 83 } PCI_ROOT_BRIDGE_INSTANCE; 84 85 #define ROOT_BRIDGE_FROM_THIS(a) CR (a, PCI_ROOT_BRIDGE_INSTANCE, RootBridgeIo, PCI_ROOT_BRIDGE_SIGNATURE) 86 87 #define ROOT_BRIDGE_FROM_LINK(a) CR (a, PCI_ROOT_BRIDGE_INSTANCE, Link, PCI_ROOT_BRIDGE_SIGNATURE) 88 89 /** 90 Construct the Pci Root Bridge instance. 91 92 @param Bridge The root bridge instance. 93 94 @return The pointer to PCI_ROOT_BRIDGE_INSTANCE just created 95 or NULL if creation fails. 96 **/ 97 PCI_ROOT_BRIDGE_INSTANCE * 98 CreateRootBridge ( 99 IN PCI_ROOT_BRIDGE *Bridge 100 ); 101 102 // 103 // Protocol Member Function Prototypes 104 // 105 /** 106 107 Poll an address in memory mapped space until an exit condition is met 108 or a timeout occurs. 109 110 @param This - Pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance. 111 @param Width - Width of the memory operation. 112 @param Address - The base address of the memory operation. 113 @param Mask - Mask used for polling criteria. 114 @param Value - Comparison value used for polling exit criteria. 115 @param Delay - Number of 100ns units to poll. 116 @param Result - Pointer to the last value read from memory location. 117 118 @retval EFI_SUCCESS - Success. 119 @retval EFI_INVALID_PARAMETER - Invalid parameter found. 120 @retval EFI_TIMEOUT - Delay expired before a match occurred. 121 @retval EFI_OUT_OF_RESOURCES - Fail due to lack of resources. 122 123 **/ 124 EFI_STATUS 125 EFIAPI 126 RootBridgeIoPollMem ( 127 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 128 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width, 129 IN UINT64 Address, 130 IN UINT64 Mask, 131 IN UINT64 Value, 132 IN UINT64 Delay, 133 OUT UINT64 *Result 134 ) 135 ; 136 137 /** 138 139 Poll an address in I/O space until an exit condition is met 140 or a timeout occurs. 141 142 @param This - Pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance. 143 @param Width - Width of I/O operation. 144 @param Address - The base address of the I/O operation. 145 @param Mask - Mask used for polling criteria. 146 @param Value - Comparison value used for polling exit criteria. 147 @param Delay - Number of 100ns units to poll. 148 @param Result - Pointer to the last value read from memory location. 149 150 @retval EFI_SUCCESS - Success. 151 @retval EFI_INVALID_PARAMETER - Invalid parameter found. 152 @retval EFI_TIMEOUT - Delay expired before a match occurred. 153 @retval EFI_OUT_OF_RESOURCES - Fail due to lack of resources. 154 155 **/ 156 EFI_STATUS 157 EFIAPI 158 RootBridgeIoPollIo ( 159 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 160 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width, 161 IN UINT64 Address, 162 IN UINT64 Mask, 163 IN UINT64 Value, 164 IN UINT64 Delay, 165 OUT UINT64 *Result 166 ) 167 ; 168 169 /** 170 171 Allow read from memory mapped I/O space. 172 173 @param This - Pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance. 174 @param Width - The width of memory operation. 175 @param Address - Base address of the memory operation. 176 @param Count - Number of memory opeartion to perform. 177 @param Buffer - The destination buffer to store data. 178 179 @retval EFI_SUCCESS - Success. 180 @retval EFI_INVALID_PARAMETER - Invalid parameter found. 181 @retval EFI_OUT_OF_RESOURCES - Fail due to lack of resources. 182 183 **/ 184 EFI_STATUS 185 EFIAPI 186 RootBridgeIoMemRead ( 187 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 188 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width, 189 IN UINT64 Address, 190 IN UINTN Count, 191 IN OUT VOID *Buffer 192 ) 193 ; 194 195 /** 196 197 Allow write to memory mapped I/O space. 198 199 @param This - Pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance. 200 @param Width - The width of memory operation. 201 @param Address - Base address of the memory operation. 202 @param Count - Number of memory opeartion to perform. 203 @param Buffer - The source buffer to write data from. 204 205 @retval EFI_SUCCESS - Success. 206 @retval EFI_INVALID_PARAMETER - Invalid parameter found. 207 @retval EFI_OUT_OF_RESOURCES - Fail due to lack of resources. 208 209 **/ 210 EFI_STATUS 211 EFIAPI 212 RootBridgeIoMemWrite ( 213 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 214 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width, 215 IN UINT64 Address, 216 IN UINTN Count, 217 IN OUT VOID *Buffer 218 ) 219 ; 220 221 /** 222 223 Enable a PCI driver to read PCI controller registers in the 224 PCI root bridge I/O space. 225 226 @param This - A pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL 227 @param Width - Signifies the width of the memory operation. 228 @param UserAddress - The base address of the I/O operation. 229 @param Count - The number of I/O operations to perform. 230 @param UserBuffer - The destination buffer to store the results. 231 232 @retval EFI_SUCCESS - The data was read from the PCI root bridge. 233 @retval EFI_INVALID_PARAMETER - Invalid parameters found. 234 @retval EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of 235 @retval resources. 236 **/ 237 EFI_STATUS 238 EFIAPI 239 RootBridgeIoIoRead ( 240 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 241 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width, 242 IN UINT64 UserAddress, 243 IN UINTN Count, 244 IN OUT VOID *UserBuffer 245 ) 246 ; 247 248 /** 249 250 Enable a PCI driver to write to PCI controller registers in the 251 PCI root bridge I/O space. 252 253 @param This - A pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL 254 @param Width - Signifies the width of the memory operation. 255 @param UserAddress - The base address of the I/O operation. 256 @param Count - The number of I/O operations to perform. 257 @param UserBuffer - The source buffer to write data from. 258 259 @retval EFI_SUCCESS - The data was written to the PCI root bridge. 260 @retval EFI_INVALID_PARAMETER - Invalid parameters found. 261 @retval EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of 262 @retval resources. 263 **/ 264 EFI_STATUS 265 EFIAPI 266 RootBridgeIoIoWrite ( 267 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 268 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width, 269 IN UINT64 UserAddress, 270 IN UINTN Count, 271 IN OUT VOID *UserBuffer 272 ) 273 ; 274 275 /** 276 277 Copy one region of PCI root bridge memory space to be copied to 278 another region of PCI root bridge memory space. 279 280 @param This - A pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance. 281 @param Width - Signifies the width of the memory operation. 282 @param DestAddress - Destination address of the memory operation. 283 @param SrcAddress - Source address of the memory operation. 284 @param Count - Number of memory operations to perform. 285 286 @retval EFI_SUCCESS - The data was copied successfully. 287 @retval EFI_INVALID_PARAMETER - Invalid parameters found. 288 @retval EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of 289 @retval resources. 290 **/ 291 EFI_STATUS 292 EFIAPI 293 RootBridgeIoCopyMem ( 294 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 295 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width, 296 IN UINT64 DestAddress, 297 IN UINT64 SrcAddress, 298 IN UINTN Count 299 ) 300 ; 301 302 /** 303 304 Allows read from PCI configuration space. 305 306 @param This - A pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL 307 @param Width - Signifies the width of the memory operation. 308 @param Address - The address within the PCI configuration space 309 for the PCI controller. 310 @param Count - The number of PCI configuration operations 311 to perform. 312 @param Buffer - The destination buffer to store the results. 313 314 @retval EFI_SUCCESS - The data was read from the PCI root bridge. 315 @retval EFI_INVALID_PARAMETER - Invalid parameters found. 316 @retval EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of 317 @retval resources. 318 **/ 319 EFI_STATUS 320 EFIAPI 321 RootBridgeIoPciRead ( 322 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 323 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width, 324 IN UINT64 Address, 325 IN UINTN Count, 326 IN OUT VOID *Buffer 327 ) 328 ; 329 330 /** 331 332 Allows write to PCI configuration space. 333 334 @param This - A pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL 335 @param Width - Signifies the width of the memory operation. 336 @param Address - The address within the PCI configuration space 337 for the PCI controller. 338 @param Count - The number of PCI configuration operations 339 to perform. 340 @param Buffer - The source buffer to get the results. 341 342 @retval EFI_SUCCESS - The data was written to the PCI root bridge. 343 @retval EFI_INVALID_PARAMETER - Invalid parameters found. 344 @retval EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of 345 @retval resources. 346 **/ 347 EFI_STATUS 348 EFIAPI 349 RootBridgeIoPciWrite ( 350 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 351 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width, 352 IN UINT64 Address, 353 IN UINTN Count, 354 IN OUT VOID *Buffer 355 ) 356 ; 357 358 /** 359 Provides the PCI controller-specific address needed to access 360 system memory for DMA. 361 362 @param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL. 363 @param Operation Indicate if the bus master is going to read or write 364 to system memory. 365 @param HostAddress The system memory address to map on the PCI controller. 366 @param NumberOfBytes On input the number of bytes to map. 367 On output the number of bytes that were mapped. 368 @param DeviceAddress The resulting map address for the bus master PCI 369 controller to use to access the system memory's HostAddress. 370 @param Mapping The value to pass to Unmap() when the bus master DMA 371 operation is complete. 372 373 @retval EFI_SUCCESS Success. 374 @retval EFI_INVALID_PARAMETER Invalid parameters found. 375 @retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common buffer. 376 @retval EFI_DEVICE_ERROR The System hardware could not map the requested address. 377 @retval EFI_OUT_OF_RESOURCES The request could not be completed due to lack of resources. 378 **/ 379 EFI_STATUS 380 EFIAPI 381 RootBridgeIoMap ( 382 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 383 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION Operation, 384 IN VOID *HostAddress, 385 IN OUT UINTN *NumberOfBytes, 386 OUT EFI_PHYSICAL_ADDRESS *DeviceAddress, 387 OUT VOID **Mapping 388 ) 389 ; 390 391 /** 392 Completes the Map() operation and releases any corresponding resources. 393 394 The Unmap() function completes the Map() operation and releases any 395 corresponding resources. 396 If the operation was an EfiPciOperationBusMasterWrite or 397 EfiPciOperationBusMasterWrite64, the data is committed to the target system 398 memory. 399 Any resources used for the mapping are freed. 400 401 @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL. 402 @param[in] Mapping The mapping value returned from Map(). 403 404 @retval EFI_SUCCESS The range was unmapped. 405 @retval EFI_INVALID_PARAMETER Mapping is not a value that was returned by Map(). 406 @retval EFI_DEVICE_ERROR The data was not committed to the target system memory. 407 **/ 408 EFI_STATUS 409 EFIAPI 410 RootBridgeIoUnmap ( 411 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 412 IN VOID *Mapping 413 ) 414 ; 415 416 /** 417 Allocates pages that are suitable for an EfiPciOperationBusMasterCommonBuffer 418 or EfiPciOperationBusMasterCommonBuffer64 mapping. 419 420 @param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL. 421 @param Type This parameter is not used and must be ignored. 422 @param MemoryType The type of memory to allocate, EfiBootServicesData or 423 EfiRuntimeServicesData. 424 @param Pages The number of pages to allocate. 425 @param HostAddress A pointer to store the base system memory address of the 426 allocated range. 427 @param Attributes The requested bit mask of attributes for the allocated 428 range. Only the attributes 429 EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE, 430 EFI_PCI_ATTRIBUTE_MEMORY_CACHED, and 431 EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE may be used with this 432 function. 433 434 @retval EFI_SUCCESS The requested memory pages were allocated. 435 @retval EFI_INVALID_PARAMETER MemoryType is invalid. 436 @retval EFI_INVALID_PARAMETER HostAddress is NULL. 437 @retval EFI_UNSUPPORTED Attributes is unsupported. The only legal 438 attribute bits are MEMORY_WRITE_COMBINE, 439 MEMORY_CACHED, and DUAL_ADDRESS_CYCLE. 440 @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated. 441 **/ 442 EFI_STATUS 443 EFIAPI 444 RootBridgeIoAllocateBuffer ( 445 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 446 IN EFI_ALLOCATE_TYPE Type, 447 IN EFI_MEMORY_TYPE MemoryType, 448 IN UINTN Pages, 449 OUT VOID **HostAddress, 450 IN UINT64 Attributes 451 ) 452 ; 453 454 /** 455 456 Free memory allocated in AllocateBuffer. 457 458 @param This - Pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL 459 instance. 460 @param Pages - Number of pages to free. 461 @param HostAddress - The base system memory address of the 462 allocated range. 463 464 @retval EFI_SUCCESS - Requested memory pages were freed. 465 @retval EFI_INVALID_PARAMETER - Invalid parameter found. 466 467 **/ 468 EFI_STATUS 469 EFIAPI 470 RootBridgeIoFreeBuffer ( 471 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 472 IN UINTN Pages, 473 OUT VOID *HostAddress 474 ) 475 ; 476 477 /** 478 479 Flushes all PCI posted write transactions from a PCI host 480 bridge to system memory. 481 482 @param This - Pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance. 483 484 @retval EFI_SUCCESS - PCI posted write transactions were flushed 485 @retval from PCI host bridge to system memory. 486 @retval EFI_DEVICE_ERROR - Fail due to hardware error. 487 488 **/ 489 EFI_STATUS 490 EFIAPI 491 RootBridgeIoFlush ( 492 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This 493 ) 494 ; 495 496 /** 497 Gets the attributes that a PCI root bridge supports setting with 498 SetAttributes(), and the attributes that a PCI root bridge is currently 499 using. 500 501 The GetAttributes() function returns the mask of attributes that this PCI 502 root bridge supports and the mask of attributes that the PCI root bridge is 503 currently using. 504 505 @param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL. 506 @param Supported A pointer to the mask of attributes that this PCI root 507 bridge supports setting with SetAttributes(). 508 @param Attributes A pointer to the mask of attributes that this PCI root 509 bridge is currently using. 510 511 @retval EFI_SUCCESS If Supports is not NULL, then the attributes 512 that the PCI root bridge supports is returned 513 in Supports. If Attributes is not NULL, then 514 the attributes that the PCI root bridge is 515 currently using is returned in Attributes. 516 @retval EFI_INVALID_PARAMETER Both Supports and Attributes are NULL. 517 **/ 518 EFI_STATUS 519 EFIAPI 520 RootBridgeIoGetAttributes ( 521 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 522 OUT UINT64 *Supported, 523 OUT UINT64 *Attributes 524 ) 525 ; 526 527 /** 528 529 Sets the attributes for a resource range on a PCI root bridge. 530 531 @param This - Pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance. 532 @param Attributes - The mask of attributes to set. 533 @param ResourceBase - Pointer to the base address of the resource range 534 to be modified by the attributes specified by Attributes. 535 @param ResourceLength - Pointer to the length of the resource range to be modified. 536 537 @retval EFI_SUCCESS - Success. 538 @retval EFI_INVALID_PARAMETER - Invalid parameter found. 539 @retval EFI_OUT_OF_RESOURCES - Not enough resources to set the attributes upon. 540 541 **/ 542 EFI_STATUS 543 EFIAPI 544 RootBridgeIoSetAttributes ( 545 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 546 IN UINT64 Attributes, 547 IN OUT UINT64 *ResourceBase, 548 IN OUT UINT64 *ResourceLength 549 ) 550 ; 551 552 /** 553 554 Retrieves the current resource settings of this PCI root bridge 555 in the form of a set of ACPI 2.0 resource descriptor. 556 557 @param This - Pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance. 558 @param Resources - Pointer to the ACPI 2.0 resource descriptor that 559 describe the current configuration of this PCI root 560 bridge. 561 562 @retval EFI_SUCCESS - Success. 563 @retval EFI_UNSUPPORTED - Current configuration of the PCI root bridge 564 @retval could not be retrieved. 565 566 **/ 567 EFI_STATUS 568 EFIAPI 569 RootBridgeIoConfiguration ( 570 IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This, 571 OUT VOID **Resources 572 ) 573 ; 574 575 576 extern EFI_METRONOME_ARCH_PROTOCOL *mMetronome; 577 extern EFI_CPU_IO2_PROTOCOL *mCpuIo; 578 #endif 579