MdePkg/Include/Protocol/PlatformToDriverConfiguration.h

   1 /** @file
   2   The file provides the protocol to retrieve configuration
   3   information for a device that a UEFI driver is about to start.
   4
   5   Copyright (c) 2006 - 2008, Intel Corporation
   6   All rights reserved. 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 __PLATFORM_TO_DRIVER_CONFIGUARTION_H__
  17 #define __PLATFORM_TO_DRIVER_CONFIGUARTION_H__
  18
  19 #define EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL_GUID  \
  20   { 0x642cd590, 0x8059, 0x4c0a, { 0xa9, 0x58, 0xc5, 0xec, 0x7, 0xd2, 0x3c, 0x4b } }
  21
  22
  23 typedef struct _EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL;
  24
  25
  26 /**
  27   The UEFI driver must call Query early in the Start() function
  28   before any time consuming operations are performed. If
  29   ChildHandle is NULL the driver is requesting information from
  30   the platform about the ControllerHandle that is being started.
  31   Information returned from Query may lead to the drivers Start()
  32   function failing. If the UEFI driver is a bus driver and
  33   producing a ChildHandle the driver must call Query after the
  34   child handle has been created and an EFI_DEVICE_PATH_PROTOCOL
  35   has been placed on that handle, but before any time consuming
  36   operation is performed. If information return by Query may lead
  37   the driver to decide to not create the ChildHandle. The driver
  38   must then cleanup and remove the ChildHandle from the system.
  39   The UEFI driver repeatedly calls Query, processes the
  40   information returned by the platform, and calls Response passing
  41   in the arguments returned from Query. The Instance value passed
  42   into Response must be the same value returned from the
  43   corresponding call to Query. The UEFI driver must continuously
  44   call Query and Response until EFI_NOT_FOUND is returned by
  45   Query. The only value of Instance that has meaning to the UEFI
  46   driver is zero. An Instance value of zero means return the first
  47   ParameterBlock in the set of unprocessed parameter blocks. If a
  48   ParameterBlock has been processed via a Query and corresponding
  49   Response call it must not be returned again via a Query call.
  50
  51   @param This                 A pointer to the EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL instance.
  52
  53   @param ControllerHandle     The handle the platform will return
  54                               configuration information about.
  55
  56   @param ChildHandle          The handle of the child controller to
  57                               return information on. This is an optional
  58                               parameter that may be NULL. It will be
  59                               NULL for device drivers, and for bus
  60                               drivers that attempt to get options for
  61                               the bus controller. It will not be NULL
  62                               for a bus driver that attempts to get
  63                               options for one of its child controllers.
  64
  65
  66   @param Instance             Pointer to the Instance value. On output the
  67                               instance associated with the parameter data
  68                               return. On input zero means return the first
  69                               query data or pass in a valid instance
  70                               number returned from a previous call to
  71                               Query.
  72
  73   @param ParameterTypeGuid    An EFI_GUID that defines the
  74                               contents of ParameterBlock. UEFI
  75                               drivers must use the
  76                               ParameterTypeGuid to determine how
  77                               to parser the ParameterBlock.
  78
  79   @param ParameterBlock       The platform returns a pointer to the
  80                               ParameterBlock structure which
  81                               contains details about the
  82                               configuration parameters specific to
  83                               the ParameterTypeGuid. This structure
  84                               is defined based on the protocol and
  85                               may be different for different
  86                               protocols. UEFI driver decodes this
  87                               structure and its contents based on
  88                               ProtocolGuid. ParameterBlock is
  89                               allocated by the platform and the
  90                               platform is responsible for freeing
  91                               the ParameterBlock after Result is
  92                               called.
  93
  94   @param ParameterBlockSize   The platform returns the size of
  95                               the ParameterBlock in bytes.
  96
  97
  98   @retval EFI_SUCCESS           The platform return parameter
  99                                 information for ControllerHandle.
 100
 101   @retval EFI_NOT_FOUND         No more unread Instance exists.
 102
 103   @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid
 104                                 EFI_HANDLE.
 105
 106   @retval EFI_INVALID_PARAMETER Instance is NULL.
 107
 108   @retval EFI_DEVICE_ERROR      A device error occurred while
 109                                 attempting to return parameter block
 110                                 information for the controller
 111                                 specified by ControllerHandle and
 112                                 ChildHandle.
 113
 114   @retval EFI_OUT_RESOURCES     There are not enough resources
 115                                 available to set the configuration
 116                                 options for the controller specified
 117                                 by ControllerHandle and ChildHandle.
 118
 119
 120 **/
 121 typedef
 122 EFI_STATUS
 123 (EFIAPI *EFI_PLATFORM_TO_DRIVER_CONFIGURATION_QUERY)(
 124   IN CONST  EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL *This,
 125   IN CONST  EFI_HANDLE  ControllerHandle,
 126   IN CONST  EFI_HANDLE  ChildHandle OPTIONAL,
 127   IN OUT    UINTN       *Instance,
 128   IN OUT    EFI_GUID    **ParameterTypeGuid,
 129   IN OUT    VOID        **ParameterBlock,
 130   IN OUT    UINTN       *ParameterBlockSize
 131 );
 132
 133 typedef enum {
 134   ///
 135   ///  The controller specified by ControllerHandle is still
 136   ///  in a usable state, it's configuration has been updated
 137   ///  via parsing the ParameterBlock. If required by the
 138   ///  parameter block and the module supports an NVRAM store
 139   ///  the configuration information from PB was successfully
 140   ///  saved to the NVRAM. No actions are required before
 141   ///  this controller can be used again with the updated
 142   ///  configuration settings.
 143   ///
 144   EfiPlatformConfigurationActionNone              = 0,
 145
 146   ///
 147   ///  The driver has detected that the controller specified
 148   ///  by ControllerHandle  is not in a usable state, and it
 149   ///  needs to be stopped. The calling agent can use the
 150   ///  DisconnectControservice to perform this operation, and
 151   ///  it should be performed as soon as possible.
 152   ///
 153   EfiPlatformConfigurationActionStopController    = 1,
 154
 155   ///
 156   ///  This controller specified by ControllerHandle needs to
 157   ///  be stopped and restarted before it can be used again.
 158   ///  The calling agent can use the DisconnectController()
 159   ///  and ConnectController() services to perform this
 160   ///  operation. The restart operation can be delayed  until
 161   ///  all of the configuratiooptions have been set.
 162   ///
 163   EfiPlatformConfigurationActionRestartController = 2,
 164
 165   ///
 166   ///  A configuration change has been made that requires the
 167   ///  platform to be restarted before the controller
 168   ///  specified by ControllerHandle can be used again. The
 169   ///  calling agent can use the ResetSystem() services to
 170   ///  perform this operation. The restart operation can be
 171   ///  delayed until all of the configuration options have
 172   ///  been set.
 173   ///
 174   EfiPlatformConfigurationActionRestartPlatform   = 3,
 175
 176   ///
 177   ///  The controller specified by ControllerHandle is still
 178   ///  in a usable state; its configuration has been updated
 179   ///  via parsing the ParameterBlock. The driver tried to
 180   ///  update the driver's private NVRAM store with
 181   ///  information from ParameterBlock and failed. No actions
 182   ///  are required before this controller can be used again
 183   ///  with the updated configuration settings, but these
 184   ///  configuration settings are not guaranteed to persist
 185   ///  after ControllerHandle is stopped.
 186   ///
 187   EfiPlatformConfigurationActionNvramFailed       = 4,
 188   EfiPlatformConfigurationActionMaximum
 189 } EFI_PLATFORM_CONFIGURATION_ACTION;
 190
 191
 192 /**
 193   The UEFI driver repeatedly calls Query, processes the
 194   information returned by the platform, and calls Response passing
 195   in the arguments returned from Query. The UEFI driver must
 196   continuously call Query until EFI_NOT_FOUND is returned. For
 197   every call to Query that returns EFI_SUCCESS a corrisponding
 198   call to Response is required passing in the same
 199   ContollerHandle, ChildHandle, Instance, ParameterTypeGuid,
 200   ParameterBlock, and ParameterBlockSize. The UEFI driver may
 201   update values in ParameterBlock based on rules defined by
 202   ParameterTypeGuid. The platform is responsible for freeing
 203   ParameterBlock and the UEFI driver must not try to free it
 204
 205   @param This               A pointer to the EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL instance.
 206
 207   @param ControllerHandle   The handle the driver is returning
 208                             configuration information about.
 209
 210   @param ChildHandle        The handle of the child controller to
 211                             return information on. This is an optional
 212                             parameter that may be NULL. It will be
 213                             NULL for device drivers, and for bus
 214                             drivers that attempt to get options for
 215                             the bus controller. It will not be NULL
 216                             for a bus driver that attempts to get
 217                             options for one of its child controllers.
 218                             Instance Instance data returned from
 219                             Query().
 220
 221   @param ParameterTypeGuid  ParameterTypeGuid returned from Query.
 222
 223   @param ParameterBlock     ParameterBlock returned from Query.
 224
 225   @param ParameterBlockSize The ParameterBlock size returned from Query.
 226
 227   @param Configuration      ActionThe driver tells the platform what
 228                             action is required for ParameterBlock to
 229                             take effect.
 230
 231
 232   @retval EFI_SUCCESS           The platform return parameter information
 233                                 for ControllerHandle.
 234
 235   @retval EFI_NOT_FOUND         Instance was not found.
 236
 237   @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.
 238
 239   @retval EFI_INVALID_PARAMETER Instance is zero.
 240
 241 **/
 242 typedef
 243 EFI_STATUS
 244 (EFIAPI *EFI_PLATFORM_TO_DRIVER_CONFIGURATION_RESPONSE)(
 245   IN CONST  EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL *This,
 246   IN CONST  EFI_HANDLE  ControllerHandle,
 247   IN CONST  EFI_HANDLE  ChildHandle OPTIONAL,
 248   IN CONST  UINTN       *Instance,
 249   IN CONST  EFI_GUID    *ParameterTypeGuid,
 250   IN CONST  VOID        *ParameterBlock,
 251   IN CONST  UINTN       ParameterBlockSize ,
 252   IN CONST  EFI_PLATFORM_CONFIGURATION_ACTION ConfigurationAction
 253 );
 254
 255
 256 /**
 257   @par Protocol Description:
 258   The EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL is used by the
 259   UEFI driver to query the platform for configuration information.
 260   The UEFI driver calls Query() multiple times to get
 261   configuration information from the platform. For every call to
 262   Query() there must be a matching call to Response() so the
 263   UEFI driver can inform the platform how it used the
 264   information passed in from Query(). It's legal for a UEFI
 265   driver to use Response() to inform the platform it does not
 266   understand the data returned via Query() and thus no action was
 267   taken.
 268
 269   @param  Query     Called by the UEFI Driver Start() function to
 270                     get configuration information from the
 271                     platform.
 272
 273   @param  Response  Called by the UEFI Driver Start() function
 274                     to let the platform know how UEFI driver
 275                     processed the data return from Query.
 276
 277
 278 **/
 279 struct _EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL {
 280   EFI_PLATFORM_TO_DRIVER_CONFIGURATION_QUERY    Query;
 281   EFI_PLATFORM_TO_DRIVER_CONFIGURATION_RESPONSE Response;
 282 };
 283
 284
 285
 286 #define EFI_PLATFORM_TO_DRIVER_CONFIGURATION_CLP_GUID   \
 287   {0x345ecc0e, 0xcb6, 0x4b75, { 0xbb, 0x57, 0x1b, 0x12, 0x9c, 0x47, 0x33,0x3e } }
 288
 289 /**
 290
 291   ParameterTypeGuid provides the support for parameters
 292   communicated through the DMTF SM CLP Specification 1.0 Final
 293   Standard to be used to configure the UEFI driver. In this
 294   section the producer of the
 295   EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL is platform
 296   firmware and the consumer is the UEFI driver. Note: if future
 297   versions of the DMTF SM CLP Specification require changes to the
 298   parameter block definition, newer ParameterTypeGuid will be
 299   used.
 300 **/
 301 typedef struct {
 302   ///
 303   ///  A pointer to the DMTF SM CLP command line null-terminated string that the
 304   ///  driver is required to parse and process when this EFI_SUCCESS The platform
 305   ///  return parameter information for ControllerHandle. EFI_NOT_FOUND Instance
 306   ///  was not found. EFI_INVALID_PARAMETER ControllerHandle is not a valid
 307   ///  EFI_HANDLE. EFI_INVALID_PARAMETER Instance is zero. function is called.
 308   ///  See the DMTF SM CLP Specification 1.0 Final Standard for details on the
 309   ///  format and syntax of the CLP command line string. CLPCommand buffer
 310   ///  is allocated by the producer of the EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOOL.
 311   ///
 312   CHAR8   *CLPCommand;
 313
 314   ///
 315   /// The length of the CLP Command in bytes.
 316   ///
 317   UINT32  CLPCommandLength;
 318
 319   ///
 320   ///  A pointer to the CLP return status string that the driver is required to
 321   ///  provide to the calling agent. The calling agent may parse and/ or pass
 322   ///  this for processing and user feedback. The SM CLP Command Response string
 323   ///  buffer is filled in by the UEFI driver in the "keyword=value" format
 324   ///  described in the SM CLP Specification, unless otherwise requested via the SM
 325   ///  CLP Coutput option in the Command Line string buffer. UEFI driver's support
 326   ///  for this default "keyword=value" output format is required if the UEFI
 327   ///  driver supports this protocol, while support for other SM CLP output
 328   ///  formats is optional (the UEFI Driver should return an EFI_UNSUPPORTED if
 329   ///  the SM CLP Coutput option requested by the caller is not supported by the
 330   ///  UEFI Driver). CLPReturnString buffer is allocated by the consumer of the
 331   ///  EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOC OL and undefined prior to the call to
 332   ///  Response().
 333   ///
 334   CHAR8   *CLPReturnString;
 335
 336   ///
 337   /// The length of the CLP return status string in bytes.
 338   ///
 339   UINT32  CLPReturnStringLength;
 340
 341   ///
 342   ///  SM CLP Command Status (see DMTF SM CLP Specification 1.0 Final Standard -
 343   ///  Table 4) CLPErrorValue SM CLP Processing Error Value (see DMTF SM
 344   ///  CLP Specification 1.0 Final Standard - Table 6). This field is filled in by
 345   ///  the consumer of the EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOC
 346   ///  OL and undefined prior to the call to Response().
 347   ///
 348   UINT8   CLPCmdStatus;
 349   UINT8   CLPErrorValue;
 350
 351   ///
 352   ///  Bit 15: OEM Message Code Flag 0 = Message Code is an SM CLP Probable
 353   ///  Cause Value. (see SM CLP Specification Table 11) 1 = Message Code is OEM
 354   ///  Specific Bits 14-0: Message Code This field is filled in by the consumer of
 355   ///  the EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOC OL and undefined prior to the call to
 356   ///  Response().
 357   ///
 358   UINT16  CLPMsgCode;
 359 } EFI_CONFIGURE_CLP_PARAMETER_BLK;
 360
 361
 362
 363 extern EFI_GUID gEfiPlatformToDriverConfigurationClpGuid;
 364
 365 extern EFI_GUID gEfiPlatformToDriverConfigurationProtocolGuid;
 366
 367 #endif