MdePkg/Include/Protocol/PciRootBridgeIo.h

   1 /** @file
   2   PCI Root Bridge I/O protocol as defined in the UEFI 2.0 specification.
   3
   4   PCI Root Bridge I/O protocol is used by PCI Bus Driver to perform PCI Memory, PCI I/O,
   5   and PCI Configuration cycles on a PCI Root Bridge. It also provides services to perform
   6   defferent types of bus mastering DMA
   7
   8   Copyright (c) 2006, Intel Corporation
   9   All rights reserved. This program and the accompanying materials
  10   are licensed and made available under the terms and conditions of the BSD License
  11   which accompanies this distribution.  The full text of the license may be found at
  12   http://opensource.org/licenses/bsd-license.php
  13
  14   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  15   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  16
  17 **/
  18
  19 #ifndef __PCI_ROOT_BRIDGE_IO_H__
  20 #define __PCI_ROOT_BRIDGE_IO_H__
  21
  22 #include <PiDxe.h>
  23
  24 #define EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GUID \
  25   { \
  26     0x2f707ebb, 0x4a1a, 0x11d4, {0x9a, 0x38, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \
  27   }
  28
  29 typedef struct _EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL;
  30
  31 typedef enum {
  32   EfiPciWidthUint8,
  33   EfiPciWidthUint16,
  34   EfiPciWidthUint32,
  35   EfiPciWidthUint64,
  36   EfiPciWidthFifoUint8,
  37   EfiPciWidthFifoUint16,
  38   EfiPciWidthFifoUint32,
  39   EfiPciWidthFifoUint64,
  40   EfiPciWidthFillUint8,
  41   EfiPciWidthFillUint16,
  42   EfiPciWidthFillUint32,
  43   EfiPciWidthFillUint64,
  44   EfiPciWidthMaximum
  45 } EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH;
  46
  47 typedef enum {
  48   EfiPciOperationBusMasterRead,
  49   EfiPciOperationBusMasterWrite,
  50   EfiPciOperationBusMasterCommonBuffer,
  51   EfiPciOperationBusMasterRead64,
  52   EfiPciOperationBusMasterWrite64,
  53   EfiPciOperationBusMasterCommonBuffer64,
  54   EfiPciOperationMaximum
  55 } EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION;
  56
  57 #define EFI_PCI_ATTRIBUTE_ISA_MOTHERBOARD_IO          0x0001
  58 #define EFI_PCI_ATTRIBUTE_ISA_IO                      0x0002
  59 #define EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO              0x0004
  60 #define EFI_PCI_ATTRIBUTE_VGA_MEMORY                  0x0008
  61 #define EFI_PCI_ATTRIBUTE_VGA_IO                      0x0010
  62 #define EFI_PCI_ATTRIBUTE_IDE_PRIMARY_IO              0x0020
  63 #define EFI_PCI_ATTRIBUTE_IDE_SECONDARY_IO            0x0040
  64 #define EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE        0x0080
  65 #define EFI_PCI_ATTRIBUTE_MEMORY_CACHED               0x0800
  66 #define EFI_PCI_ATTRIBUTE_MEMORY_DISABLE              0x1000
  67 #define EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE          0x8000
  68
  69 #define EFI_PCI_ATTRIBUTE_VALID_FOR_ALLOCATE_BUFFER   (EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE | EFI_PCI_ATTRIBUTE_MEMORY_CACHED | EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE)
  70
  71 #define EFI_PCI_ATTRIBUTE_INVALID_FOR_ALLOCATE_BUFFER (~EFI_PCI_ATTRIBUTE_VALID_FOR_ALLOCATE_BUFFER)
  72
  73 #define EFI_PCI_ADDRESS(bus, dev, func, reg) \
  74     ((UINT64) ((((UINTN) bus) << 24) + (((UINTN) dev) << 16) + (((UINTN) func) << 8) + ((UINTN) reg)))
  75
  76 typedef struct {
  77   UINT8   Register;
  78   UINT8   Function;
  79   UINT8   Device;
  80   UINT8   Bus;
  81   UINT32  ExtendedRegister;
  82 } EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS;
  83
  84 /**
  85   Reads from the I/O space of a PCI Root Bridge. Returns when either the polling exit criteria is
  86   satisfied or after a defined duration.
  87
  88   @param  This                  A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
  89   @param  Width                 Signifies the width of the memory or I/O operations.
  90   @param  Address               The base address of the memory or I/O operations.
  91   @param  Mask                  Mask used for the polling criteria.
  92   @param  Value                 The comparison value used for the polling exit criteria.
  93   @param  Delay                 The number of 100 ns units to poll.
  94   @param  Result                Pointer to the last value read from the memory location.
  95
  96   @retval EFI_SUCCESS           The last data returned from the access matched the poll exit criteria.
  97   @retval EFI_TIMEOUT           Delay expired before a match occurred.
  98   @retval EFI_OUT_OF_RESOURCES  The request could not be completed due to a lack of resources.
  99   @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
 100
 101 **/
 102 typedef
 103 EFI_STATUS
 104 (EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_POLL_IO_MEM) (
 105   IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL           *This,
 106   IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH    Width,
 107   IN  UINT64                                   Address,
 108   IN  UINT64                                   Mask,
 109   IN  UINT64                                   Value,
 110   IN  UINT64                                   Delay,
 111   OUT UINT64                                   *Result
 112   );
 113
 114 /**
 115   Enables a PCI driver to access PCI controller registers in the PCI root bridge memory space.
 116
 117   @param  This                  A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
 118   @param  Width                 Signifies the width of the memory operations.
 119   @param  Address               The base address of the memory operations.
 120   @param  Count                 The number of memory operations to perform.
 121   @param  Buffer                For read operations, the destination buffer to store the results. For write
 122                                 operations, the source buffer to write data from.
 123
 124   @retval EFI_SUCCESS           The data was read from or written to the PCI root bridge.
 125   @retval EFI_OUT_OF_RESOURCES  The request could not be completed due to a lack of resources.
 126   @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
 127
 128 **/
 129 typedef
 130 EFI_STATUS
 131 (EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_IO_MEM) (
 132   IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL              *This,
 133   IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH    Width,
 134   IN     UINT64                                   Address,
 135   IN     UINTN                                    Count,
 136   IN OUT VOID                                     *Buffer
 137   );
 138
 139 typedef struct {
 140   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_IO_MEM  Read;
 141   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_IO_MEM  Write;
 142 } EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ACCESS;
 143
 144 /**
 145   Enables a PCI driver to copy one region of PCI root bridge memory space to another region of PCI
 146   root bridge memory space.
 147
 148   @param  This                  A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance.
 149   @param  Width                 Signifies the width of the memory operations.
 150   @param  DestAddress           The destination address of the memory operation.
 151   @param  SrcAddress            The source address of the memory operation.
 152   @param  Count                 The number of memory operations to perform.
 153
 154   @retval EFI_SUCCESS           The data was copied from one memory region to another memory region.
 155   @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
 156   @retval EFI_OUT_OF_RESOURCES  The request could not be completed due to a lack of resources.
 157
 158 **/
 159 typedef
 160 EFI_STATUS
 161 (EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_COPY_MEM) (
 162   IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL              *This,
 163   IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH    Width,
 164   IN     UINT64                                   DestAddress,
 165   IN     UINT64                                   SrcAddress,
 166   IN     UINTN                                    Count
 167   );
 168
 169 /**
 170   Provides the PCI controller-Cspecific addresses required to access system memory from a
 171   DMA bus master.
 172
 173   @param  This                  A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
 174   @param  Operation             Indicates if the bus master is going to read or write to system memory.
 175   @param  HostAddress           The system memory address to map to the PCI controller.
 176   @param  NumberOfBytes         On input the number of bytes to map. On output the number of bytes
 177                                 that were mapped.
 178   @param  DeviceAddress         The resulting map address for the bus master PCI controller to use to
 179                                 access the hosts HostAddress.
 180   @param  Mapping               A resulting value to pass to Unmap().
 181
 182   @retval EFI_SUCCESS           The range was mapped for the returned NumberOfBytes.
 183   @retval EFI_UNSUPPORTED       The HostAddress cannot be mapped as a common buffer.
 184   @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
 185   @retval EFI_OUT_OF_RESOURCES  The request could not be completed due to a lack of resources.
 186   @retval EFI_DEVICE_ERROR      The system hardware could not map the requested address.
 187
 188 **/
 189 typedef
 190 EFI_STATUS
 191 (EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_MAP) (
 192   IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL                *This,
 193   IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION  Operation,
 194   IN     VOID                                       *HostAddress,
 195   IN OUT UINTN                                      *NumberOfBytes,
 196   OUT    EFI_PHYSICAL_ADDRESS                       *DeviceAddress,
 197   OUT    VOID                                       **Mapping
 198   );
 199
 200 /**
 201   Completes the Map() operation and releases any corresponding resources.
 202
 203   @param  This                  A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
 204   @param  Mapping               The mapping value returned from Map().
 205
 206   @retval EFI_SUCCESS           The range was unmapped.
 207   @retval EFI_INVALID_PARAMETER Mapping is not a value that was returned by Map().
 208   @retval EFI_DEVICE_ERROR      The data was not committed to the target system memory.
 209
 210 **/
 211 typedef
 212 EFI_STATUS
 213 (EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_UNMAP) (
 214   IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL           *This,
 215   IN  VOID                                     *Mapping
 216   );
 217
 218 /**
 219   Allocates pages that are suitable for an EfiPciOperationBusMasterCommonBuffer or
 220   EfiPciOperationBusMasterCommonBuffer64 mapping.
 221
 222   @param  This                  A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
 223   @param  Type                  This parameter is not used and must be ignored.
 224   @param  MemoryType            The type of memory to allocate, EfiBootServicesData or
 225                                 EfiRuntimeServicesData.
 226   @param  Pages                 The number of pages to allocate.
 227   @param  HostAddress           A pointer to store the base system memory address of the
 228                                 allocated range.
 229   @param  Attributes            The requested bit mask of attributes for the allocated range.
 230
 231   @retval EFI_SUCCESS           The requested memory pages were allocated.
 232   @retval EFI_UNSUPPORTED       Attributes is unsupported. The only legal attribute bits are
 233                                 MEMORY_WRITE_COMBINE and MEMORY_CACHED.
 234   @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
 235   @retval EFI_OUT_OF_RESOURCES  The memory pages could not be allocated.
 236
 237 **/
 238 typedef
 239 EFI_STATUS
 240 (EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ALLOCATE_BUFFER) (
 241   IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL              *This,
 242   IN     EFI_ALLOCATE_TYPE                        Type,
 243   IN     EFI_MEMORY_TYPE                          MemoryType,
 244   IN     UINTN                                    Pages,
 245   IN OUT VOID                                     **HostAddress,
 246   IN     UINT64                                   Attributes
 247   );
 248
 249 /**
 250   Frees memory that was allocated with AllocateBuffer().
 251
 252   @param  This                  A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
 253   @param  Pages                 The number of pages to free.
 254   @param  HostAddress           The base system memory address of the allocated range.
 255
 256   @retval EFI_SUCCESS           The requested memory pages were freed.
 257   @retval EFI_INVALID_PARAMETER The memory range specified by HostAddress and Pages
 258                                 was not allocated with AllocateBuffer().
 259
 260 **/
 261 typedef
 262 EFI_STATUS
 263 (EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_FREE_BUFFER) (
 264   IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL           *This,
 265   IN  UINTN                                    Pages,
 266   IN  VOID                                     *HostAddress
 267   );
 268
 269 /**
 270   Flushes all PCI posted write transactions from a PCI host bridge to system memory.
 271
 272   @param  This                  A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
 273
 274   @retval EFI_SUCCESS           The PCI posted write transactions were flushed from the PCI host
 275                                 bridge to system memory.
 276   @retval EFI_DEVICE_ERROR      The PCI posted write transactions were not flushed from the PCI
 277                                 host bridge due to a hardware error.
 278
 279 **/
 280 typedef
 281 EFI_STATUS
 282 (EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_FLUSH) (
 283   IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL  *This
 284   );
 285
 286 /**
 287   Gets the attributes that a PCI root bridge supports setting with SetAttributes(), and the
 288   attributes that a PCI root bridge is currently using.
 289
 290   @param  This                  A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
 291   @param  Supports              A pointer to the mask of attributes that this PCI root bridge supports
 292                                 setting with SetAttributes().
 293   @param  Attributes            A pointer to the mask of attributes that this PCI root bridge is currently
 294                                 using.
 295
 296   @retval EFI_SUCCESS           If Supports is not NULL, then the attributes that the PCI root
 297                                 bridge supports is returned in Supports. If Attributes is
 298                                 not NULL, then the attributes that the PCI root bridge is currently
 299                                 using is returned in Attributes.
 300   @retval EFI_INVALID_PARAMETER Both Supports and Attributes are NULL.
 301
 302
 303 **/
 304 typedef
 305 EFI_STATUS
 306 (EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GET_ATTRIBUTES) (
 307   IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL           *This,
 308   OUT UINT64                                   *Supports,
 309   OUT UINT64                                   *Attributes
 310   );
 311
 312 /**
 313   Sets attributes for a resource range on a PCI root bridge.
 314
 315   @param  This                  A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
 316   @param  Attributes            The mask of attributes to set.
 317   @param  ResourceBase          A pointer to the base address of the resource range to be modified by the
 318                                 attributes specified by Attributes.
 319   @param  ResourceLength        A pointer to the length of the resource range to be modified by the
 320                                 attributes specified by Attributes.
 321
 322   @retval EFI_SUCCESS           The set of attributes specified by Attributes for the resource
 323                                 range specified by ResourceBase and ResourceLength
 324                                 were set on the PCI root bridge, and the actual resource range is
 325                                 returned in ResuourceBase and ResourceLength.
 326   @retval EFI_UNSUPPORTED       A bit is set in Attributes that is not supported by the PCI Root
 327                                 Bridge.
 328   @retval EFI_OUT_OF_RESOURCES  There are not enough resources to set the attributes on the
 329                                 resource range specified by BaseAddress and Length.
 330   @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
 331
 332 **/
 333 typedef
 334 EFI_STATUS
 335 (EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_SET_ATTRIBUTES) (
 336   IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL              *This,
 337   IN     UINT64                                   Attributes,
 338   IN OUT UINT64                                   *ResourceBase,
 339   IN OUT UINT64                                   *ResourceLength
 340   );
 341
 342 /**
 343   Retrieves the current resource settings of this PCI root bridge in the form of a set of ACPI 2.0
 344   resource descriptors.
 345
 346   @param  This                  A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
 347   @param  Resources             A pointer to the ACPI 2.0 resource descriptors that describe the current
 348                                 configuration of this PCI root bridge.
 349
 350   @retval EFI_SUCCESS           The current configuration of this PCI root bridge was returned in
 351                                 Resources.
 352   @retval EFI_UNSUPPORTED       The current configuration of this PCI root bridge could not be
 353                                 retrieved.
 354
 355 **/
 356 typedef
 357 EFI_STATUS
 358 (EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_CONFIGURATION) (
 359   IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL          *This,
 360   OUT VOID                                     **Resources
 361   );
 362
 363 struct _EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL {
 364   EFI_HANDLE                                      ParentHandle;
 365   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_POLL_IO_MEM     PollMem;
 366   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_POLL_IO_MEM     PollIo;
 367   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ACCESS          Mem;
 368   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ACCESS          Io;
 369   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ACCESS          Pci;
 370   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_COPY_MEM        CopyMem;
 371   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_MAP             Map;
 372   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_UNMAP           Unmap;
 373   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ALLOCATE_BUFFER AllocateBuffer;
 374   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_FREE_BUFFER     FreeBuffer;
 375   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_FLUSH           Flush;
 376   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GET_ATTRIBUTES  GetAttributes;
 377   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_SET_ATTRIBUTES  SetAttributes;
 378   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_CONFIGURATION   Configuration;
 379   UINT32                                          SegmentNumber;
 380 };
 381
 382 extern EFI_GUID gEfiPciRootBridgeIoProtocolGuid;
 383
 384 #endif