[mirror_edk2.git] / MdeModulePkg / Bus / Pci / SdMmcPciHcDxe / SdMmcPciHcDxe.h

/** @file\r
\r
  Provides some data structure definitions used by the SD/MMC host controller driver.\r
\r
Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution.  The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#ifndef _SD_MMC_PCI_HC_DXE_H_\r
#define _SD_MMC_PCI_HC_DXE_H_\r
\r
#include <Uefi.h>\r
\r
#include <IndustryStandard/Pci.h>\r
#include <IndustryStandard/Emmc.h>\r
#include <IndustryStandard/Sd.h>\r
\r
#include <Library/UefiDriverEntryPoint.h>\r
#include <Library/DebugLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/UefiLib.h>\r
#include <Library/DevicePathLib.h>\r
\r
#include <Protocol/DevicePath.h>\r
#include <Protocol/PciIo.h>\r
#include <Protocol/DriverBinding.h>\r
#include <Protocol/ComponentName.h>\r
#include <Protocol/ComponentName2.h>\r
#include <Protocol/SdMmcPassThru.h>\r
\r
#include "SdMmcPciHci.h"\r
\r
extern EFI_COMPONENT_NAME_PROTOCOL  gSdMmcPciHcComponentName;\r
extern EFI_COMPONENT_NAME2_PROTOCOL gSdMmcPciHcComponentName2;\r
extern EFI_DRIVER_BINDING_PROTOCOL  gSdMmcPciHcDriverBinding;\r
\r
#define SD_MMC_HC_PRIVATE_SIGNATURE  SIGNATURE_32 ('s', 'd', 't', 'f')\r
\r
#define SD_MMC_HC_PRIVATE_FROM_THIS(a) \\r
    CR(a, SD_MMC_HC_PRIVATE_DATA, PassThru, SD_MMC_HC_PRIVATE_SIGNATURE)\r
\r
//\r
// Generic time out value, 1 microsecond as unit.\r
//\r
#define SD_MMC_HC_GENERIC_TIMEOUT     1 * 1000 * 1000\r
\r
//\r
// SD/MMC async transfer timer interval, set by experience.\r
// The unit is 100us, takes 1ms as interval.\r
//\r
#define SD_MMC_HC_ASYNC_TIMER   EFI_TIMER_PERIOD_MILLISECONDS(1)\r
//\r
// SD/MMC removable device enumeration timer interval, set by experience.\r
// The unit is 100us, takes 100ms as interval.\r
//\r
#define SD_MMC_HC_ENUM_TIMER    EFI_TIMER_PERIOD_MILLISECONDS(100)\r
\r
typedef enum {\r
  UnknownCardType,\r
  SdCardType,\r
  SdioCardType,\r
  MmcCardType,\r
  EmmcCardType\r
} SD_MMC_CARD_TYPE;\r
\r
typedef enum {\r
  RemovableSlot,\r
  EmbeddedSlot,\r
  SharedBusSlot,\r
  UnknownSlot\r
} EFI_SD_MMC_SLOT_TYPE;\r
\r
typedef struct {\r
  BOOLEAN                           Enable;\r
  EFI_SD_MMC_SLOT_TYPE              SlotType;\r
  BOOLEAN                           MediaPresent;\r
  BOOLEAN                           Initialized;\r
  SD_MMC_CARD_TYPE                  CardType;\r
} SD_MMC_HC_SLOT;\r
\r
typedef struct {\r
  UINTN                               Signature;\r
\r
  EFI_HANDLE                          ControllerHandle;\r
  EFI_PCI_IO_PROTOCOL                 *PciIo;\r
\r
  EFI_SD_MMC_PASS_THRU_PROTOCOL       PassThru;\r
\r
  UINT64                              PciAttributes;\r
  //\r
  // The field is used to record the previous slot in GetNextSlot().\r
  //\r
  UINT8                               PreviousSlot;\r
  //\r
  // For Non-blocking operation.\r
  //\r
  EFI_EVENT                           TimerEvent;\r
  //\r
  // For Sd removable device enumeration.\r
  //\r
  EFI_EVENT                           ConnectEvent;\r
  LIST_ENTRY                          Queue;\r
\r
  SD_MMC_HC_SLOT                      Slot[SD_MMC_HC_MAX_SLOT];\r
  SD_MMC_HC_SLOT_CAP                  Capability[SD_MMC_HC_MAX_SLOT];\r
  UINT64                              MaxCurrent[SD_MMC_HC_MAX_SLOT];\r
\r
  UINT32                              ControllerVersion;\r
} SD_MMC_HC_PRIVATE_DATA;\r
\r
#define SD_MMC_HC_TRB_SIG             SIGNATURE_32 ('T', 'R', 'B', 'T')\r
\r
//\r
// TRB (Transfer Request Block) contains information for the cmd request.\r
//\r
typedef struct {\r
  UINT32                              Signature;\r
  LIST_ENTRY                          TrbList;\r
\r
  UINT8                               Slot;\r
  UINT16                              BlockSize;\r
\r
  EFI_SD_MMC_PASS_THRU_COMMAND_PACKET *Packet;\r
  VOID                                *Data;\r
  UINT32                              DataLen;\r
  BOOLEAN                             Read;\r
  EFI_PHYSICAL_ADDRESS                DataPhy;\r
  VOID                                *DataMap;\r
  SD_MMC_HC_TRANSFER_MODE             Mode;\r
\r
  EFI_EVENT                           Event;\r
  BOOLEAN                             Started;\r
  UINT64                              Timeout;\r
\r
  SD_MMC_HC_ADMA_DESC_LINE            *AdmaDesc;\r
  EFI_PHYSICAL_ADDRESS                AdmaDescPhy;\r
  VOID                                *AdmaMap;\r
  UINT32                              AdmaPages;\r
\r
  SD_MMC_HC_PRIVATE_DATA              *Private;\r
} SD_MMC_HC_TRB;\r
\r
#define SD_MMC_HC_TRB_FROM_THIS(a) \\r
    CR(a, SD_MMC_HC_TRB, TrbList, SD_MMC_HC_TRB_SIG)\r
\r
//\r
// Task for Non-blocking mode.\r
//\r
typedef struct {\r
  UINT32                              Signature;\r
  LIST_ENTRY                          Link;\r
\r
  UINT8                               Slot;\r
  EFI_SD_MMC_PASS_THRU_COMMAND_PACKET *Packet;\r
  BOOLEAN                             IsStart;\r
  EFI_EVENT                           Event;\r
  UINT64                              RetryTimes;\r
  BOOLEAN                             InfiniteWait;\r
  VOID                                *Map;\r
  VOID                                *MapAddress;\r
} SD_MMC_HC_QUEUE;\r
\r
//\r
// Prototypes\r
//\r
/**\r
  Execute card identification procedure.\r
\r
  @param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.\r
  @param[in] Slot           The slot number of the SD card to send the command to.\r
\r
  @retval EFI_SUCCESS       The card is identified correctly.\r
  @retval Others            The card can't be identified.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(*CARD_TYPE_DETECT_ROUTINE) (\r
  IN SD_MMC_HC_PRIVATE_DATA             *Private,\r
  IN UINT8                              Slot\r
  );\r
\r
/**\r
  Sends SD command to an SD card that is attached to the SD controller.\r
\r
  The PassThru() function sends the SD command specified by Packet to the SD card\r
  specified by Slot.\r
\r
  If Packet is successfully sent to the SD card, then EFI_SUCCESS is returned.\r
\r
  If a device error occurs while sending the Packet, then EFI_DEVICE_ERROR is returned.\r
\r
  If Slot is not in a valid range for the SD controller, then EFI_INVALID_PARAMETER\r
  is returned.\r
\r
  If Packet defines a data command but both InDataBuffer and OutDataBuffer are NULL,\r
  EFI_INVALID_PARAMETER is returned.\r
\r
  @param[in]     This           A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r
  @param[in]     Slot           The slot number of the SD card to send the command to.\r
  @param[in,out] Packet         A pointer to the SD command data structure.\r
  @param[in]     Event          If Event is NULL, blocking I/O is performed. If Event is\r
                                not NULL, then nonblocking I/O is performed, and Event\r
                                will be signaled when the Packet completes.\r
\r
  @retval EFI_SUCCESS           The SD Command Packet was sent by the host.\r
  @retval EFI_DEVICE_ERROR      A device error occurred while attempting to send the SD\r
                                command Packet.\r
  @retval EFI_INVALID_PARAMETER Packet, Slot, or the contents of the Packet is invalid.\r
  @retval EFI_INVALID_PARAMETER Packet defines a data command but both InDataBuffer and\r
                                OutDataBuffer are NULL.\r
  @retval EFI_NO_MEDIA          SD Device not present in the Slot.\r
  @retval EFI_UNSUPPORTED       The command described by the SD Command Packet is not\r
                                supported by the host controller.\r
  @retval EFI_BAD_BUFFER_SIZE   The InTransferLength or OutTransferLength exceeds the\r
                                limit supported by SD card ( i.e. if the number of bytes\r
                                exceed the Last LBA).\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SdMmcPassThruPassThru (\r
  IN     EFI_SD_MMC_PASS_THRU_PROTOCOL         *This,\r
  IN     UINT8                                 Slot,\r
  IN OUT EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   *Packet,\r
  IN     EFI_EVENT                             Event    OPTIONAL\r
  );\r
\r
/**\r
  Used to retrieve next slot numbers supported by the SD controller. The function\r
  returns information about all available slots (populated or not-populated).\r
\r
  The GetNextSlot() function retrieves the next slot number on an SD controller.\r
  If on input Slot is 0xFF, then the slot number of the first slot on the SD controller\r
  is returned.\r
\r
  If Slot is a slot number that was returned on a previous call to GetNextSlot(), then\r
  the slot number of the next slot on the SD controller is returned.\r
\r
  If Slot is not 0xFF and Slot was not returned on a previous call to GetNextSlot(),\r
  EFI_INVALID_PARAMETER is returned.\r
\r
  If Slot is the slot number of the last slot on the SD controller, then EFI_NOT_FOUND\r
  is returned.\r
\r
  @param[in]     This           A pointer to the EFI_SD_MMMC_PASS_THRU_PROTOCOL instance.\r
  @param[in,out] Slot           On input, a pointer to a slot number on the SD controller.\r
                                On output, a pointer to the next slot number on the SD controller.\r
                                An input value of 0xFF retrieves the first slot number on the SD\r
                                controller.\r
\r
  @retval EFI_SUCCESS           The next slot number on the SD controller was returned in Slot.\r
  @retval EFI_NOT_FOUND         There are no more slots on this SD controller.\r
  @retval EFI_INVALID_PARAMETER Slot is not 0xFF and Slot was not returned on a previous call\r
                                to GetNextSlot().\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SdMmcPassThruGetNextSlot (\r
  IN     EFI_SD_MMC_PASS_THRU_PROTOCOL        *This,\r
  IN OUT UINT8                                *Slot\r
  );\r
\r
/**\r
  Used to allocate and build a device path node for an SD card on the SD controller.\r
\r
  The BuildDevicePath() function allocates and builds a single device node for the SD\r
  card specified by Slot.\r
\r
  If the SD card specified by Slot is not present on the SD controller, then EFI_NOT_FOUND\r
  is returned.\r
\r
  If DevicePath is NULL, then EFI_INVALID_PARAMETER is returned.\r
\r
  If there are not enough resources to allocate the device path node, then EFI_OUT_OF_RESOURCES\r
  is returned.\r
\r
  Otherwise, DevicePath is allocated with the boot service AllocatePool(), the contents of\r
  DevicePath are initialized to describe the SD card specified by Slot, and EFI_SUCCESS is\r
  returned.\r
\r
  @param[in]     This           A pointer to the EFI_SD_MMMC_PASS_THRU_PROTOCOL instance.\r
  @param[in]     Slot           Specifies the slot number of the SD card for which a device\r
                                path node is to be allocated and built.\r
  @param[in,out] DevicePath     A pointer to a single device path node that describes the SD\r
                                card specified by Slot. This function is responsible for\r
                                allocating the buffer DevicePath with the boot service\r
                                AllocatePool(). It is the caller's responsibility to free\r
                                DevicePath when the caller is finished with DevicePath.\r
\r
  @retval EFI_SUCCESS           The device path node that describes the SD card specified by\r
                                Slot was allocated and returned in DevicePath.\r
  @retval EFI_NOT_FOUND         The SD card specified by Slot does not exist on the SD controller.\r
  @retval EFI_INVALID_PARAMETER DevicePath is NULL.\r
  @retval EFI_OUT_OF_RESOURCES  There are not enough resources to allocate DevicePath.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SdMmcPassThruBuildDevicePath (\r
  IN     EFI_SD_MMC_PASS_THRU_PROTOCOL       *This,\r
  IN     UINT8                               Slot,\r
  IN OUT EFI_DEVICE_PATH_PROTOCOL            **DevicePath\r
  );\r
\r
/**\r
  This function retrieves an SD card slot number based on the input device path.\r
\r
  The GetSlotNumber() function retrieves slot number for the SD card specified by\r
  the DevicePath node. If DevicePath is NULL, EFI_INVALID_PARAMETER is returned.\r
\r
  If DevicePath is not a device path node type that the SD Pass Thru driver supports,\r
  EFI_UNSUPPORTED is returned.\r
\r
  @param[in]  This              A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r
  @param[in]  DevicePath        A pointer to the device path node that describes a SD\r
                                card on the SD controller.\r
  @param[out] Slot              On return, points to the slot number of an SD card on\r
                                the SD controller.\r
\r
  @retval EFI_SUCCESS           SD card slot number is returned in Slot.\r
  @retval EFI_INVALID_PARAMETER Slot or DevicePath is NULL.\r
  @retval EFI_UNSUPPORTED       DevicePath is not a device path node type that the SD\r
                                Pass Thru driver supports.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SdMmcPassThruGetSlotNumber (\r
  IN  EFI_SD_MMC_PASS_THRU_PROTOCOL          *This,\r
  IN  EFI_DEVICE_PATH_PROTOCOL               *DevicePath,\r
  OUT UINT8                                  *Slot\r
  );\r
\r
/**\r
  Resets an SD card that is connected to the SD controller.\r
\r
  The ResetDevice() function resets the SD card specified by Slot.\r
\r
  If this SD controller does not support a device reset operation, EFI_UNSUPPORTED is\r
  returned.\r
\r
  If Slot is not in a valid slot number for this SD controller, EFI_INVALID_PARAMETER\r
  is returned.\r
\r
  If the device reset operation is completed, EFI_SUCCESS is returned.\r
\r
  @param[in]  This              A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r
  @param[in]  Slot              Specifies the slot number of the SD card to be reset.\r
\r
  @retval EFI_SUCCESS           The SD card specified by Slot was reset.\r
  @retval EFI_UNSUPPORTED       The SD controller does not support a device reset operation.\r
  @retval EFI_INVALID_PARAMETER Slot number is invalid.\r
  @retval EFI_NO_MEDIA          SD Device not present in the Slot.\r
  @retval EFI_DEVICE_ERROR      The reset command failed due to a device error\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SdMmcPassThruResetDevice (\r
  IN EFI_SD_MMC_PASS_THRU_PROTOCOL           *This,\r
  IN UINT8                                   Slot\r
  );\r
\r
//\r
// Driver model protocol interfaces\r
//\r
/**\r
  Tests to see if this driver supports a given controller. If a child device is provided,\r
  it further tests to see if this driver supports creating a handle for the specified child device.\r
\r
  This function checks to see if the driver specified by This supports the device specified by\r
  ControllerHandle. Drivers will typically use the device path attached to\r
  ControllerHandle and/or the services from the bus I/O abstraction attached to\r
  ControllerHandle to determine if the driver supports ControllerHandle. This function\r
  may be called many times during platform initialization. In order to reduce boot times, the tests\r
  performed by this function must be very small, and take as little time as possible to execute. This\r
  function must not change the state of any hardware devices, and this function must be aware that the\r
  device specified by ControllerHandle may already be managed by the same driver or a\r
  different driver. This function must match its calls to AllocatePages() with FreePages(),\r
  AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol().\r
  Since ControllerHandle may have been previously started by the same driver, if a protocol is\r
  already in the opened state, then it must not be closed with CloseProtocol(). This is required\r
  to guarantee the state of ControllerHandle is not modified by this function.\r
\r
  @param[in]  This                 A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
  @param[in]  ControllerHandle     The handle of the controller to test. This handle\r
                                   must support a protocol interface that supplies\r
                                   an I/O abstraction to the driver.\r
  @param[in]  RemainingDevicePath  A pointer to the remaining portion of a device path.  This\r
                                   parameter is ignored by device drivers, and is optional for bus\r
                                   drivers. For bus drivers, if this parameter is not NULL, then\r
                                   the bus driver must determine if the bus controller specified\r
                                   by ControllerHandle and the child controller specified\r
                                   by RemainingDevicePath are both supported by this\r
                                   bus driver.\r
\r
  @retval EFI_SUCCESS              The device specified by ControllerHandle and\r
                                   RemainingDevicePath is supported by the driver specified by This.\r
  @retval EFI_ALREADY_STARTED      The device specified by ControllerHandle and\r
                                   RemainingDevicePath is already being managed by the driver\r
                                   specified by This.\r
  @retval EFI_ACCESS_DENIED        The device specified by ControllerHandle and\r
                                   RemainingDevicePath is already being managed by a different\r
                                   driver or an application that requires exclusive access.\r
                                   Currently not implemented.\r
  @retval EFI_UNSUPPORTED          The device specified by ControllerHandle and\r
                                   RemainingDevicePath is not supported by the driver specified by This.\r
**/\r
EFI_STATUS\r
EFIAPI\r
SdMmcPciHcDriverBindingSupported (\r
  IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
  IN EFI_HANDLE                  Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL    *RemainingDevicePath\r
  );\r
\r
/**\r
  Starts a device controller or a bus controller.\r
\r
  The Start() function is designed to be invoked from the EFI boot service ConnectController().\r
  As a result, much of the error checking on the parameters to Start() has been moved into this\r
  common boot service. It is legal to call Start() from other locations,\r
  but the following calling restrictions must be followed or the system behavior will not be deterministic.\r
  1. ControllerHandle must be a valid EFI_HANDLE.\r
  2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned\r
     EFI_DEVICE_PATH_PROTOCOL.\r
  3. Prior to calling Start(), the Supported() function for the driver specified by This must\r
     have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.\r
\r
  @param[in]  This                 A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
  @param[in]  ControllerHandle     The handle of the controller to start. This handle\r
                                   must support a protocol interface that supplies\r
                                   an I/O abstraction to the driver.\r
  @param[in]  RemainingDevicePath  A pointer to the remaining portion of a device path.  This\r
                                   parameter is ignored by device drivers, and is optional for bus\r
                                   drivers. For a bus driver, if this parameter is NULL, then handles\r
                                   for all the children of Controller are created by this driver.\r
                                   If this parameter is not NULL and the first Device Path Node is\r
                                   not the End of Device Path Node, then only the handle for the\r
                                   child device specified by the first Device Path Node of\r
                                   RemainingDevicePath is created by this driver.\r
                                   If the first Device Path Node of RemainingDevicePath is\r
                                   the End of Device Path Node, no child handle is created by this\r
                                   driver.\r
\r
  @retval EFI_SUCCESS              The device was started.\r
  @retval EFI_DEVICE_ERROR         The device could not be started due to a device error.Currently not implemented.\r
  @retval EFI_OUT_OF_RESOURCES     The request could not be completed due to a lack of resources.\r
  @retval Others                   The driver failded to start the device.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SdMmcPciHcDriverBindingStart (\r
  IN EFI_DRIVER_BINDING_PROTOCOL     *This,\r
  IN EFI_HANDLE                      Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL        *RemainingDevicePath\r
  );\r
\r
/**\r
  Stops a device controller or a bus controller.\r
\r
  The Stop() function is designed to be invoked from the EFI boot service DisconnectController().\r
  As a result, much of the error checking on the parameters to Stop() has been moved\r
  into this common boot service. It is legal to call Stop() from other locations,\r
  but the following calling restrictions must be followed or the system behavior will not be deterministic.\r
  1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this\r
     same driver's Start() function.\r
  2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid\r
     EFI_HANDLE. In addition, all of these handles must have been created in this driver's\r
     Start() function, and the Start() function must have called OpenProtocol() on\r
     ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.\r
\r
  @param[in]  This              A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
  @param[in]  ControllerHandle  A handle to the device being stopped. The handle must\r
                                support a bus specific I/O protocol for the driver\r
                                to use to stop the device.\r
  @param[in]  NumberOfChildren  The number of child device handles in ChildHandleBuffer.\r
  @param[in]  ChildHandleBuffer An array of child handles to be freed. May be NULL\r
                                if NumberOfChildren is 0.\r
\r
  @retval EFI_SUCCESS           The device was stopped.\r
  @retval EFI_DEVICE_ERROR      The device could not be stopped due to a device error.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SdMmcPciHcDriverBindingStop (\r
  IN  EFI_DRIVER_BINDING_PROTOCOL     *This,\r
  IN  EFI_HANDLE                      Controller,\r
  IN  UINTN                           NumberOfChildren,\r
  IN  EFI_HANDLE                      *ChildHandleBuffer\r
  );\r
\r
//\r
// EFI Component Name Functions\r
//\r
/**\r
  Retrieves a Unicode string that is the user readable name of the driver.\r
\r
  This function retrieves the user readable name of a driver in the form of a\r
  Unicode string. If the driver specified by This has a user readable name in\r
  the language specified by Language, then a pointer to the driver name is\r
  returned in DriverName, and EFI_SUCCESS is returned. If the driver specified\r
  by This does not support the language specified by Language,\r
  then EFI_UNSUPPORTED is returned.\r
\r
  @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or\r
                                EFI_COMPONENT_NAME_PROTOCOL instance.\r
\r
  @param  Language[in]          A pointer to a Null-terminated ASCII string\r
                                array indicating the language. This is the\r
                                language of the driver name that the caller is\r
                                requesting, and it must match one of the\r
                                languages specified in SupportedLanguages. The\r
                                number of languages supported by a driver is up\r
                                to the driver writer. Language is specified\r
                                in RFC 4646 or ISO 639-2 language code format.\r
\r
  @param  DriverName[out]       A pointer to the Unicode string to return.\r
                                This Unicode string is the name of the\r
                                driver specified by This in the language\r
                                specified by Language.\r
\r
  @retval EFI_SUCCESS           The Unicode string for the Driver specified by\r
                                This and the language specified by Language was\r
                                returned in DriverName.\r
\r
  @retval EFI_INVALID_PARAMETER Language is NULL.\r
\r
  @retval EFI_INVALID_PARAMETER DriverName is NULL.\r
\r
  @retval EFI_UNSUPPORTED       The driver specified by This does not support\r
                                the language specified by Language.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SdMmcPciHcComponentNameGetDriverName (\r
  IN  EFI_COMPONENT_NAME_PROTOCOL     *This,\r
  IN  CHAR8                           *Language,\r
  OUT CHAR16                          **DriverName\r
  );\r
\r
/**\r
  Retrieves a Unicode string that is the user readable name of the controller\r
  that is being managed by a driver.\r
\r
  This function retrieves the user readable name of the controller specified by\r
  ControllerHandle and ChildHandle in the form of a Unicode string. If the\r
  driver specified by This has a user readable name in the language specified by\r
  Language, then a pointer to the controller name is returned in ControllerName,\r
  and EFI_SUCCESS is returned.  If the driver specified by This is not currently\r
  managing the controller specified by ControllerHandle and ChildHandle,\r
  then EFI_UNSUPPORTED is returned.  If the driver specified by This does not\r
  support the language specified by Language, then EFI_UNSUPPORTED is returned.\r
\r
  @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or\r
                                EFI_COMPONENT_NAME_PROTOCOL instance.\r
\r
  @param  ControllerHandle[in]  The handle of a controller that the driver\r
                                specified by This is managing.  This handle\r
                                specifies the controller whose name is to be\r
                                returned.\r
\r
  @param  ChildHandle[in]       The handle of the child controller to retrieve\r
                                the name of.  This is an optional parameter that\r
                                may be NULL.  It will be NULL for device\r
                                drivers.  It will also be NULL for a bus drivers\r
                                that wish to retrieve the name of the bus\r
                                controller.  It will not be NULL for a bus\r
                                driver that wishes to retrieve the name of a\r
                                child controller.\r
\r
  @param  Language[in]          A pointer to a Null-terminated ASCII string\r
                                array indicating the language.  This is the\r
                                language of the driver name that the caller is\r
                                requesting, and it must match one of the\r
                                languages specified in SupportedLanguages. The\r
                                number of languages supported by a driver is up\r
                                to the driver writer. Language is specified in\r
                                RFC 4646 or ISO 639-2 language code format.\r
\r
  @param  ControllerName[out]   A pointer to the Unicode string to return.\r
                                This Unicode string is the name of the\r
                                controller specified by ControllerHandle and\r
                                ChildHandle in the language specified by\r
                                Language from the point of view of the driver\r
                                specified by This.\r
\r
  @retval EFI_SUCCESS           The Unicode string for the user readable name in\r
                                the language specified by Language for the\r
                                driver specified by This was returned in\r
                                DriverName.\r
\r
  @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.\r
\r
  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid\r
                                EFI_HANDLE.\r
\r
  @retval EFI_INVALID_PARAMETER Language is NULL.\r
\r
  @retval EFI_INVALID_PARAMETER ControllerName is NULL.\r
\r
  @retval EFI_UNSUPPORTED       The driver specified by This is not currently\r
                                managing the controller specified by\r
                                ControllerHandle and ChildHandle.\r
\r
  @retval EFI_UNSUPPORTED       The driver specified by This does not support\r
                                the language specified by Language.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SdMmcPciHcComponentNameGetControllerName (\r
  IN  EFI_COMPONENT_NAME_PROTOCOL     *This,\r
  IN  EFI_HANDLE                      ControllerHandle,\r
  IN  EFI_HANDLE                      ChildHandle, OPTIONAL\r
  IN  CHAR8                           *Language,\r
  OUT CHAR16                          **ControllerName\r
  );\r
\r
/**\r
  Create a new TRB for the SD/MMC cmd request.\r
\r
  @param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.\r
  @param[in] Slot           The slot number of the SD card to send the command to.\r
  @param[in] Packet         A pointer to the SD command data structure.\r
  @param[in] Event          If Event is NULL, blocking I/O is performed. If Event is\r
                            not NULL, then nonblocking I/O is performed, and Event\r
                            will be signaled when the Packet completes.\r
\r
  @return Created Trb or NULL.\r
\r
**/\r
SD_MMC_HC_TRB *\r
SdMmcCreateTrb (\r
  IN SD_MMC_HC_PRIVATE_DATA              *Private,\r
  IN UINT8                               Slot,\r
  IN EFI_SD_MMC_PASS_THRU_COMMAND_PACKET *Packet,\r
  IN EFI_EVENT                           Event\r
  );\r
\r
/**\r
  Free the resource used by the TRB.\r
\r
  @param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.\r
\r
**/\r
VOID\r
SdMmcFreeTrb (\r
  IN SD_MMC_HC_TRB           *Trb\r
  );\r
\r
/**\r
  Check if the env is ready for execute specified TRB.\r
\r
  @param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.\r
  @param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.\r
\r
  @retval EFI_SUCCESS       The env is ready for TRB execution.\r
  @retval EFI_NOT_READY     The env is not ready for TRB execution.\r
  @retval Others            Some erros happen.\r
\r
**/\r
EFI_STATUS\r
SdMmcCheckTrbEnv (\r
  IN SD_MMC_HC_PRIVATE_DATA           *Private,\r
  IN SD_MMC_HC_TRB                    *Trb\r
  );\r
\r
/**\r
  Wait for the env to be ready for execute specified TRB.\r
\r
  @param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.\r
  @param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.\r
\r
  @retval EFI_SUCCESS       The env is ready for TRB execution.\r
  @retval EFI_TIMEOUT       The env is not ready for TRB execution in time.\r
  @retval Others            Some erros happen.\r
\r
**/\r
EFI_STATUS\r
SdMmcWaitTrbEnv (\r
  IN SD_MMC_HC_PRIVATE_DATA           *Private,\r
  IN SD_MMC_HC_TRB                    *Trb\r
  );\r
\r
/**\r
  Execute the specified TRB.\r
\r
  @param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.\r
  @param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.\r
\r
  @retval EFI_SUCCESS       The TRB is sent to host controller successfully.\r
  @retval Others            Some erros happen when sending this request to the host controller.\r
\r
**/\r
EFI_STATUS\r
SdMmcExecTrb (\r
  IN SD_MMC_HC_PRIVATE_DATA           *Private,\r
  IN SD_MMC_HC_TRB                    *Trb\r
  );\r
\r
/**\r
  Check the TRB execution result.\r
\r
  @param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.\r
  @param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.\r
\r
  @retval EFI_SUCCESS       The TRB is executed successfully.\r
  @retval EFI_NOT_READY     The TRB is not completed for execution.\r
  @retval Others            Some erros happen when executing this request.\r
\r
**/\r
EFI_STATUS\r
SdMmcCheckTrbResult (\r
  IN SD_MMC_HC_PRIVATE_DATA           *Private,\r
  IN SD_MMC_HC_TRB                    *Trb\r
  );\r
\r
/**\r
  Wait for the TRB execution result.\r
\r
  @param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.\r
  @param[in] Trb            The pointer to the SD_MMC_HC_TRB instance.\r
\r
  @retval EFI_SUCCESS       The TRB is executed successfully.\r
  @retval Others            Some erros happen when executing this request.\r
\r
**/\r
EFI_STATUS\r
SdMmcWaitTrbResult (\r
  IN SD_MMC_HC_PRIVATE_DATA           *Private,\r
  IN SD_MMC_HC_TRB                    *Trb\r
  );\r
\r
/**\r
  Execute EMMC device identification procedure.\r
\r
  Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.\r
\r
  @param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.\r
  @param[in] Slot           The slot number of the SD card to send the command to.\r
\r
  @retval EFI_SUCCESS       There is a EMMC card.\r
  @retval Others            There is not a EMMC card.\r
\r
**/\r
EFI_STATUS\r
EmmcIdentification (\r
  IN SD_MMC_HC_PRIVATE_DATA             *Private,\r
  IN UINT8                              Slot\r
  );\r
\r
/**\r
  Execute EMMC device identification procedure.\r
\r
  Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.\r
\r
  @param[in] Private        A pointer to the SD_MMC_HC_PRIVATE_DATA instance.\r
  @param[in] Slot           The slot number of the SD card to send the command to.\r
\r
  @retval EFI_SUCCESS       There is a EMMC card.\r
  @retval Others            There is not a EMMC card.\r
\r
**/\r
EFI_STATUS\r
SdCardIdentification (\r
  IN SD_MMC_HC_PRIVATE_DATA             *Private,\r
  IN UINT8                              Slot\r
  );\r
\r
#endif\r