[mirror_edk2.git] / MdeModulePkg / Bus / Ufs / UfsPassThruDxe / UfsPassThru.h

/** @file\r
\r
  Copyright (c) 2014 - 2019, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#ifndef _UFS_PASS_THRU_H_\r
#define _UFS_PASS_THRU_H_\r
\r
#include <Uefi.h>\r
\r
#include <Protocol/ScsiPassThruExt.h>\r
#include <Protocol/UfsDeviceConfig.h>\r
#include <Protocol/UfsHostController.h>\r
#include <Protocol/UfsHostControllerPlatform.h>\r
\r
#include <Library/DebugLib.h>\r
#include <Library/UefiDriverEntryPoint.h>\r
#include <Library/BaseLib.h>\r
#include <Library/UefiLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/DevicePathLib.h>\r
#include <Library/TimerLib.h>\r
\r
#include "UfsPassThruHci.h"\r
\r
#define UFS_PASS_THRU_SIG           SIGNATURE_32 ('U', 'F', 'S', 'P')\r
\r
//\r
// Lun 0~7 is for 8 common luns.\r
// Lun 8~11 is for those 4 well known luns (Refer to UFS 2.0 spec Table 10.58 for details):\r
//  Lun 8:  REPORT LUNS\r
//  Lun 9:  UFS DEVICE\r
//  Lun 10: BOOT\r
//  Lun 11: RPMB\r
//\r
#define UFS_MAX_LUNS                12\r
#define UFS_WLUN_PREFIX             0xC1\r
\r
typedef struct {\r
  UINT8    Lun[UFS_MAX_LUNS];\r
  UINT16   BitMask:12;              // Bit 0~7 is 1/1 mapping to common luns. Bit 8~11 is 1/1 mapping to well-known luns.\r
  UINT16   Rsvd:4;\r
} UFS_EXPOSED_LUNS;\r
\r
//\r
// Iterate through the double linked list. This is delete-safe.\r
// Do not touch NextEntry\r
//\r
#define EFI_LIST_FOR_EACH_SAFE(Entry, NextEntry, ListHead)            \\r
  for(Entry = (ListHead)->ForwardLink, NextEntry = Entry->ForwardLink;\\r
      Entry != (ListHead); Entry = NextEntry, NextEntry = Entry->ForwardLink)\r
\r
typedef struct _UFS_PASS_THRU_PRIVATE_DATA {\r
  UINT32                              Signature;\r
  EFI_HANDLE                          Handle;\r
  EFI_EXT_SCSI_PASS_THRU_MODE         ExtScsiPassThruMode;\r
  EFI_EXT_SCSI_PASS_THRU_PROTOCOL     ExtScsiPassThru;\r
  EFI_UFS_DEVICE_CONFIG_PROTOCOL      UfsDevConfig;\r
  EDKII_UFS_HOST_CONTROLLER_PROTOCOL  *UfsHostController;\r
  UINTN                               UfsHcBase;\r
  EDKII_UFS_HC_INFO                   UfsHcInfo;\r
\r
  UINT8                               TaskTag;\r
\r
  VOID                                *UtpTrlBase;\r
  UINT8                               Nutrs;\r
  VOID                                *TrlMapping;\r
  VOID                                *UtpTmrlBase;\r
  UINT8                               Nutmrs;\r
  VOID                                *TmrlMapping;\r
\r
  UFS_EXPOSED_LUNS                    Luns;\r
\r
  //\r
  // For Non-blocking operation.\r
  //\r
  EFI_EVENT                           TimerEvent;\r
  LIST_ENTRY                          Queue;\r
} UFS_PASS_THRU_PRIVATE_DATA;\r
\r
#define UFS_PASS_THRU_TRANS_REQ_SIG   SIGNATURE_32 ('U', 'F', 'S', 'T')\r
\r
typedef struct {\r
  UINT32                                        Signature;\r
  LIST_ENTRY                                    TransferList;\r
\r
  UINT8                                         Slot;\r
  UTP_TRD                                       *Trd;\r
  UINT32                                        CmdDescSize;\r
  VOID                                          *CmdDescHost;\r
  VOID                                          *CmdDescMapping;\r
  VOID                                          *AlignedDataBuf;\r
  UINTN                                         AlignedDataBufSize;\r
  VOID                                          *DataBufMapping;\r
\r
  EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET    *Packet;\r
  UINT64                                        TimeoutRemain;\r
  EFI_EVENT                                     CallerEvent;\r
} UFS_PASS_THRU_TRANS_REQ;\r
\r
#define UFS_PASS_THRU_TRANS_REQ_FROM_THIS(a) \\r
    CR(a, UFS_PASS_THRU_TRANS_REQ, TransferList, UFS_PASS_THRU_TRANS_REQ_SIG)\r
\r
#define UFS_TIMEOUT                   EFI_TIMER_PERIOD_SECONDS(3)\r
#define UFS_HC_ASYNC_TIMER            EFI_TIMER_PERIOD_MILLISECONDS(1)\r
\r
#define ROUNDUP8(x) (((x) % 8 == 0) ? (x) : ((x) / 8 + 1) * 8)\r
\r
#define IS_ALIGNED(addr, size)        (((UINTN) (addr) & (size - 1)) == 0)\r
\r
#define UFS_PASS_THRU_PRIVATE_DATA_FROM_THIS(a) \\r
  CR (a, \\r
      UFS_PASS_THRU_PRIVATE_DATA, \\r
      ExtScsiPassThru, \\r
      UFS_PASS_THRU_SIG \\r
      )\r
\r
#define UFS_PASS_THRU_PRIVATE_DATA_FROM_DEV_CONFIG(a) \\r
  CR (a, \\r
      UFS_PASS_THRU_PRIVATE_DATA, \\r
      UfsDevConfig, \\r
      UFS_PASS_THRU_SIG \\r
      )\r
\r
typedef struct _UFS_DEVICE_MANAGEMENT_REQUEST_PACKET {\r
  UINT64           Timeout;\r
  VOID             *DataBuffer;\r
  UINT8            Opcode;\r
  UINT8            DescId;\r
  UINT8            Index;\r
  UINT8            Selector;\r
  UINT32           TransferLength;\r
  UINT8            DataDirection;\r
} UFS_DEVICE_MANAGEMENT_REQUEST_PACKET;\r
\r
//\r
// function prototype\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
UfsPassThruDriverBindingSupported (\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
UfsPassThruDriverBindingStart (\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
UfsPassThruDriverBindingStop (\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
UfsPassThruComponentNameGetDriverName (\r
  IN  EFI_COMPONENT_NAME_PROTOCOL  *This,\r
  IN  CHAR8                        *Language,\r
  OUT CHAR16                       **DriverName\r
  );\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 NULL.\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
UfsPassThruComponentNameGetControllerName (\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
  Sends a SCSI Request Packet to a SCSI device that is attached to the SCSI channel. This function\r
  supports both blocking I/O and nonblocking I/O. The blocking I/O functionality is required, and the\r
  nonblocking I/O functionality is optional.\r
\r
  @param  This    A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
  @param  Target  The Target is an array of size TARGET_MAX_BYTES and it represents\r
                  the id of the SCSI device to send the SCSI Request Packet. Each\r
                  transport driver may choose to utilize a subset of this size to suit the needs\r
                  of transport target representation. For example, a Fibre Channel driver\r
                  may use only 8 bytes (WWN) to represent an FC target.\r
  @param  Lun     The LUN of the SCSI device to send the SCSI Request Packet.\r
  @param  Packet  A pointer to the SCSI Request Packet to send to the SCSI device\r
                  specified by Target and Lun.\r
  @param  Event   If nonblocking I/O is not supported then Event is ignored, and blocking\r
                  I/O is performed. If Event is NULL, then blocking I/O is performed. If\r
                  Event is not NULL and non blocking I/O is supported, then\r
                  nonblocking I/O is performed, and Event will be signaled when the\r
                  SCSI Request Packet completes.\r
\r
  @retval EFI_SUCCESS           The SCSI Request Packet was sent by the host. For bi-directional\r
                                commands, InTransferLength bytes were transferred from\r
                                InDataBuffer. For write and bi-directional commands,\r
                                OutTransferLength bytes were transferred by\r
                                OutDataBuffer.\r
  @retval EFI_BAD_BUFFER_SIZE   The SCSI Request Packet was not executed. The number of bytes that\r
                                could be transferred is returned in InTransferLength. For write\r
                                and bi-directional commands, OutTransferLength bytes were\r
                                transferred by OutDataBuffer.\r
  @retval EFI_NOT_READY         The SCSI Request Packet could not be sent because there are too many\r
                                SCSI Request Packets already queued. The caller may retry again later.\r
  @retval EFI_DEVICE_ERROR      A device error occurred while attempting to send the SCSI Request\r
                                Packet.\r
  @retval EFI_INVALID_PARAMETER Target, Lun, or the contents of ScsiRequestPacket are invalid.\r
  @retval EFI_UNSUPPORTED       The command described by the SCSI Request Packet is not supported\r
                                by the host adapter. This includes the case of Bi-directional SCSI\r
                                commands not supported by the implementation. The SCSI Request\r
                                Packet was not sent, so no additional status information is available.\r
  @retval EFI_TIMEOUT           A timeout occurred while waiting for the SCSI Request Packet to execute.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
UfsPassThruPassThru (\r
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL                    *This,\r
  IN UINT8                                              *Target,\r
  IN UINT64                                             Lun,\r
  IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET     *Packet,\r
  IN EFI_EVENT                                          Event OPTIONAL\r
  );\r
\r
/**\r
  Used to retrieve the list of legal Target IDs and LUNs for SCSI devices on a SCSI channel. These\r
  can either be the list SCSI devices that are actually present on the SCSI channel, or the list of legal\r
  Target Ids and LUNs for the SCSI channel. Regardless, the caller of this function must probe the\r
  Target ID and LUN returned to see if a SCSI device is actually present at that location on the SCSI\r
  channel.\r
\r
  @param  This   A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
  @param  Target On input, a pointer to the Target ID (an array of size\r
                 TARGET_MAX_BYTES) of a SCSI device present on the SCSI channel.\r
                 On output, a pointer to the Target ID (an array of\r
                 TARGET_MAX_BYTES) of the next SCSI device present on a SCSI\r
                 channel. An input value of 0xF(all bytes in the array are 0xF) in the\r
                 Target array retrieves the Target ID of the first SCSI device present on a\r
                 SCSI channel.\r
  @param  Lun    On input, a pointer to the LUN of a SCSI device present on the SCSI\r
                 channel. On output, a pointer to the LUN of the next SCSI device present\r
                 on a SCSI channel.\r
\r
  @retval EFI_SUCCESS           The Target ID and LUN of the next SCSI device on the SCSI\r
                                channel was returned in Target and Lun.\r
  @retval EFI_INVALID_PARAMETER Target array is not all 0xF, and Target and Lun were\r
                                not returned on a previous call to GetNextTargetLun().\r
  @retval EFI_NOT_FOUND         There are no more SCSI devices on this SCSI channel.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
UfsPassThruGetNextTargetLun (\r
  IN  EFI_EXT_SCSI_PASS_THRU_PROTOCOL    *This,\r
  IN OUT UINT8                           **Target,\r
  IN OUT UINT64                          *Lun\r
  );\r
\r
/**\r
  Used to allocate and build a device path node for a SCSI device on a SCSI channel.\r
\r
  @param  This       A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
  @param  Target     The Target is an array of size TARGET_MAX_BYTES and it specifies the\r
                     Target ID of the SCSI device for which a device path node is to be\r
                     allocated and built. Transport drivers may chose to utilize a subset of\r
                     this size to suit the representation of targets. For example, a Fibre\r
                     Channel driver may use only 8 bytes (WWN) in the array to represent a\r
                     FC target.\r
  @param  Lun        The LUN of the SCSI device for which a device path node is to be\r
                     allocated and built.\r
  @param  DevicePath A pointer to a single device path node that describes the SCSI device\r
                     specified by Target and Lun. 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 SCSI device specified by\r
                                Target and Lun was allocated and returned in\r
                                DevicePath.\r
  @retval EFI_INVALID_PARAMETER DevicePath is NULL.\r
  @retval EFI_NOT_FOUND         The SCSI devices specified by Target and Lun does not exist\r
                                on the SCSI channel.\r
  @retval EFI_OUT_OF_RESOURCES  There are not enough resources to allocate DevicePath.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
UfsPassThruBuildDevicePath (\r
  IN     EFI_EXT_SCSI_PASS_THRU_PROTOCOL    *This,\r
  IN     UINT8                              *Target,\r
  IN     UINT64                             Lun,\r
  IN OUT EFI_DEVICE_PATH_PROTOCOL           **DevicePath\r
  );\r
\r
/**\r
  Used to translate a device path node to a Target ID and LUN.\r
\r
  @param  This       A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
  @param  DevicePath A pointer to a single device path node that describes the SCSI device\r
                     on the SCSI channel.\r
  @param  Target     A pointer to the Target Array which represents the ID of a SCSI device\r
                     on the SCSI channel.\r
  @param  Lun        A pointer to the LUN of a SCSI device on the SCSI channel.\r
\r
  @retval EFI_SUCCESS           DevicePath was successfully translated to a Target ID and\r
                                LUN, and they were returned in Target and Lun.\r
  @retval EFI_INVALID_PARAMETER DevicePath or Target or Lun is NULL.\r
  @retval EFI_NOT_FOUND         A valid translation from DevicePath to a Target ID and LUN\r
                                does not exist.\r
  @retval EFI_UNSUPPORTED       This driver does not support the device path node type in\r
                                 DevicePath.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
UfsPassThruGetTargetLun (\r
  IN  EFI_EXT_SCSI_PASS_THRU_PROTOCOL    *This,\r
  IN  EFI_DEVICE_PATH_PROTOCOL           *DevicePath,\r
  OUT UINT8                              **Target,\r
  OUT UINT64                             *Lun\r
  );\r
\r
/**\r
  Resets a SCSI channel. This operation resets all the SCSI devices connected to the SCSI channel.\r
\r
  @param  This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
\r
  @retval EFI_SUCCESS      The SCSI channel was reset.\r
  @retval EFI_DEVICE_ERROR A device error occurred while attempting to reset the SCSI channel.\r
  @retval EFI_TIMEOUT      A timeout occurred while attempting to reset the SCSI channel.\r
  @retval EFI_UNSUPPORTED  The SCSI channel does not support a channel reset operation.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
UfsPassThruResetChannel (\r
  IN  EFI_EXT_SCSI_PASS_THRU_PROTOCOL   *This\r
  );\r
\r
/**\r
  Resets a SCSI logical unit that is connected to a SCSI channel.\r
\r
  @param  This   A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
  @param  Target The Target is an array of size TARGET_MAX_BYTE and it represents the\r
                 target port ID of the SCSI device containing the SCSI logical unit to\r
                 reset. Transport drivers may chose to utilize a subset of this array to suit\r
                 the representation of their targets.\r
  @param  Lun    The LUN of the SCSI device to reset.\r
\r
  @retval EFI_SUCCESS           The SCSI device specified by Target and Lun was reset.\r
  @retval EFI_INVALID_PARAMETER Target or Lun is NULL.\r
  @retval EFI_TIMEOUT           A timeout occurred while attempting to reset the SCSI device\r
                                specified by Target and Lun.\r
  @retval EFI_UNSUPPORTED       The SCSI channel does not support a target reset operation.\r
  @retval EFI_DEVICE_ERROR      A device error occurred while attempting to reset the SCSI device\r
                                 specified by Target and Lun.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
UfsPassThruResetTargetLun (\r
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL    *This,\r
  IN UINT8                              *Target,\r
  IN UINT64                             Lun\r
  );\r
\r
/**\r
  Used to retrieve the list of legal Target IDs for SCSI devices on a SCSI channel. These can either\r
  be the list SCSI devices that are actually present on the SCSI channel, or the list of legal Target IDs\r
  for the SCSI channel. Regardless, the caller of this function must probe the Target ID returned to\r
  see if a SCSI device is actually present at that location on the SCSI channel.\r
\r
  @param  This   A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
  @param  Target (TARGET_MAX_BYTES) of a SCSI device present on the SCSI channel.\r
                 On output, a pointer to the Target ID (an array of\r
                 TARGET_MAX_BYTES) of the next SCSI device present on a SCSI\r
                 channel. An input value of 0xF(all bytes in the array are 0xF) in the\r
                 Target array retrieves the Target ID of the first SCSI device present on a\r
                 SCSI channel.\r
\r
  @retval EFI_SUCCESS           The Target ID of the next SCSI device on the SCSI\r
                                channel was returned in Target.\r
  @retval EFI_INVALID_PARAMETER Target or Lun is NULL.\r
  @retval EFI_TIMEOUT           Target array is not all 0xF, and Target was not\r
                                returned on a previous call to GetNextTarget().\r
  @retval EFI_NOT_FOUND         There are no more SCSI devices on this SCSI channel.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
UfsPassThruGetNextTarget (\r
  IN  EFI_EXT_SCSI_PASS_THRU_PROTOCOL    *This,\r
  IN OUT UINT8                           **Target\r
  );\r
\r
/**\r
  Sends a UFS-supported SCSI Request Packet to a UFS device that is attached to the UFS host controller.\r
\r
  @param[in]      Private       The pointer to the UFS_PASS_THRU_PRIVATE_DATA data structure.\r
  @param[in]      Lun           The LUN of the UFS device to send the SCSI Request Packet.\r
  @param[in, out] Packet        A pointer to the SCSI Request Packet to send to a specified Lun of the\r
                                UFS device.\r
  @param[in]      Event         If nonblocking I/O is not supported then Event is ignored, and blocking\r
                                I/O is performed. If Event is NULL, then blocking I/O is performed. If\r
                                Event is not NULL and non blocking I/O is supported, then\r
                                nonblocking I/O is performed, and Event will be signaled when the\r
                                SCSI Request Packet completes.\r
\r
  @retval EFI_SUCCESS           The SCSI Request Packet was sent by the host. For bi-directional\r
                                commands, InTransferLength bytes were transferred from\r
                                InDataBuffer. For write and bi-directional commands,\r
                                OutTransferLength bytes were transferred by\r
                                OutDataBuffer.\r
  @retval EFI_DEVICE_ERROR      A device error occurred while attempting to send the SCSI Request\r
                                Packet.\r
  @retval EFI_OUT_OF_RESOURCES  The resource for transfer is not available.\r
  @retval EFI_TIMEOUT           A timeout occurred while waiting for the SCSI Request Packet to execute.\r
\r
**/\r
EFI_STATUS\r
UfsExecScsiCmds (\r
  IN     UFS_PASS_THRU_PRIVATE_DATA                  *Private,\r
  IN     UINT8                                       Lun,\r
  IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET  *Packet,\r
  IN     EFI_EVENT                                   Event    OPTIONAL\r
  );\r
\r
/**\r
  Initialize the UFS host controller.\r
\r
  @param[in] Private                 The pointer to the NVME_CONTROLLER_PRIVATE_DATA data structure.\r
\r
  @retval EFI_SUCCESS                The NVM Express Controller is initialized successfully.\r
  @retval Others                     A device error occurred while initializing the controller.\r
\r
**/\r
EFI_STATUS\r
UfsControllerInit (\r
  IN  UFS_PASS_THRU_PRIVATE_DATA     *Private\r
  );\r
\r
/**\r
  Stop the UFS host controller.\r
\r
  @param[in] Private                 The pointer to the UFS_PASS_THRU_PRIVATE_DATA data structure.\r
\r
  @retval EFI_SUCCESS                The Ufs Host Controller is stopped successfully.\r
  @retval Others                     A device error occurred while stopping the controller.\r
\r
**/\r
EFI_STATUS\r
UfsControllerStop (\r
  IN  UFS_PASS_THRU_PRIVATE_DATA     *Private\r
  );\r
\r
/**\r
  Allocate common buffer for host and UFS bus master access simultaneously.\r
\r
  @param[in]  Private                The pointer to the UFS_PASS_THRU_PRIVATE_DATA data structure.\r
  @param[in]  Size                   The length of buffer to be allocated.\r
  @param[out] CmdDescHost            A pointer to store the base system memory address of the allocated range.\r
  @param[out] CmdDescPhyAddr         The resulting map address for the UFS bus master to use to access the hosts CmdDescHost.\r
  @param[out] CmdDescMapping         A resulting value to pass to Unmap().\r
\r
  @retval EFI_SUCCESS                The common buffer was allocated successfully.\r
  @retval EFI_DEVICE_ERROR           The allocation fails.\r
  @retval EFI_OUT_OF_RESOURCES       The memory resource is insufficient.\r
\r
**/\r
EFI_STATUS\r
UfsAllocateAlignCommonBuffer (\r
  IN     UFS_PASS_THRU_PRIVATE_DATA    *Private,\r
  IN     UINTN                         Size,\r
     OUT VOID                          **CmdDescHost,\r
     OUT EFI_PHYSICAL_ADDRESS          *CmdDescPhyAddr,\r
     OUT VOID                          **CmdDescMapping\r
  );\r
\r
/**\r
  Set specified flag to 1 on a UFS device.\r
\r
  @param[in]  Private           The pointer to the UFS_PASS_THRU_PRIVATE_DATA data structure.\r
  @param[in]  FlagId            The ID of flag to be set.\r
\r
  @retval EFI_SUCCESS           The flag was set successfully.\r
  @retval EFI_DEVICE_ERROR      A device error occurred while attempting to set the flag.\r
  @retval EFI_TIMEOUT           A timeout occurred while waiting for the completion of setting the flag.\r
\r
**/\r
EFI_STATUS\r
UfsSetFlag (\r
  IN  UFS_PASS_THRU_PRIVATE_DATA   *Private,\r
  IN  UINT8                        FlagId\r
  );\r
\r
/**\r
  Read specified flag from a UFS device.\r
\r
  @param[in]  Private           The pointer to the UFS_PASS_THRU_PRIVATE_DATA data structure.\r
  @param[in]  FlagId            The ID of flag to be read.\r
  @param[out] Value             The flag's value.\r
\r
  @retval EFI_SUCCESS           The flag was read successfully.\r
  @retval EFI_DEVICE_ERROR      A device error occurred while attempting to read the flag.\r
  @retval EFI_TIMEOUT           A timeout occurred while waiting for the completion of reading the flag.\r
\r
**/\r
EFI_STATUS\r
UfsReadFlag (\r
  IN     UFS_PASS_THRU_PRIVATE_DATA   *Private,\r
  IN     UINT8                        FlagId,\r
     OUT UINT8                        *Value\r
  );\r
\r
/**\r
  Read or write specified flag of a UFS device.\r
\r
  @param[in]      Private       The pointer to the UFS_PASS_THRU_PRIVATE_DATA data structure.\r
  @param[in]      Read          The boolean variable to show r/w direction.\r
  @param[in]      FlagId        The ID of flag to be read or written.\r
  @param[in, out] Value         The value to set or clear flag.\r
\r
  @retval EFI_SUCCESS           The flag was read/written successfully.\r
  @retval EFI_DEVICE_ERROR      A device error occurred while attempting to r/w the flag.\r
  @retval EFI_TIMEOUT           A timeout occurred while waiting for the completion of r/w the flag.\r
\r
**/\r
EFI_STATUS\r
UfsRwFlags (\r
  IN     UFS_PASS_THRU_PRIVATE_DATA   *Private,\r
  IN     BOOLEAN                      Read,\r
  IN     UINT8                        FlagId,\r
  IN OUT UINT8                        *Value\r
  );\r
\r
/**\r
  Read or write specified device descriptor of a UFS device.\r
\r
  @param[in]      Private       The pointer to the UFS_PASS_THRU_PRIVATE_DATA data structure.\r
  @param[in]      Read          The boolean variable to show r/w direction.\r
  @param[in]      DescId        The ID of device descriptor.\r
  @param[in]      Index         The Index of device descriptor.\r
  @param[in]      Selector      The Selector of device descriptor.\r
  @param[in, out] Descriptor    The buffer of device descriptor to be read or written.\r
  @param[in, out] DescSize      The size of device descriptor buffer. On input, the size, in bytes,\r
                                of the data buffer specified by Descriptor. On output, the number\r
                                of bytes that were actually transferred.\r
\r
  @retval EFI_SUCCESS           The device descriptor was read/written successfully.\r
  @retval EFI_DEVICE_ERROR      A device error occurred while attempting to r/w the device descriptor.\r
  @retval EFI_TIMEOUT           A timeout occurred while waiting for the completion of r/w the device descriptor.\r
\r
**/\r
EFI_STATUS\r
UfsRwDeviceDesc (\r
  IN     UFS_PASS_THRU_PRIVATE_DATA   *Private,\r
  IN     BOOLEAN                      Read,\r
  IN     UINT8                        DescId,\r
  IN     UINT8                        Index,\r
  IN     UINT8                        Selector,\r
  IN OUT VOID                         *Descriptor,\r
  IN OUT UINT32                       *DescSize\r
  );\r
\r
/**\r
  Read or write specified attribute of a UFS device.\r
\r
  @param[in]      Private       The pointer to the UFS_PASS_THRU_PRIVATE_DATA data structure.\r
  @param[in]      Read          The boolean variable to show r/w direction.\r
  @param[in]      AttrId        The ID of Attribute.\r
  @param[in]      Index         The Index of Attribute.\r
  @param[in]      Selector      The Selector of Attribute.\r
  @param[in, out] Attributes    The value of Attribute to be read or written.\r
\r
  @retval EFI_SUCCESS           The Attribute was read/written successfully.\r
  @retval EFI_DEVICE_ERROR      A device error occurred while attempting to r/w the Attribute.\r
  @retval EFI_TIMEOUT           A timeout occurred while waiting for the completion of r/w the Attribute.\r
\r
**/\r
EFI_STATUS\r
UfsRwAttributes (\r
  IN     UFS_PASS_THRU_PRIVATE_DATA   *Private,\r
  IN     BOOLEAN                      Read,\r
  IN     UINT8                        AttrId,\r
  IN     UINT8                        Index,\r
  IN     UINT8                        Selector,\r
  IN OUT UINT32                       *Attributes\r
  );\r
\r
/**\r
  Sends NOP IN cmd to a UFS device for initialization process request.\r
  For more details, please refer to UFS 2.0 spec Figure 13.3.\r
\r
  @param[in]  Private           The pointer to the UFS_PASS_THRU_PRIVATE_DATA data structure.\r
\r
  @retval EFI_SUCCESS           The NOP IN command was sent by the host. The NOP OUT response was\r
                                received successfully.\r
  @retval EFI_DEVICE_ERROR      A device error occurred while attempting to execute NOP IN command.\r
  @retval EFI_OUT_OF_RESOURCES  The resource for transfer is not available.\r
  @retval EFI_TIMEOUT           A timeout occurred while waiting for the NOP IN command to execute.\r
\r
**/\r
EFI_STATUS\r
UfsExecNopCmds (\r
  IN  UFS_PASS_THRU_PRIVATE_DATA       *Private\r
  );\r
\r
/**\r
  Call back function when the timer event is signaled.\r
\r
  @param[in]  Event     The Event this notify function registered to.\r
  @param[in]  Context   Pointer to the context data registered to the Event.\r
\r
**/\r
VOID\r
EFIAPI\r
ProcessAsyncTaskList (\r
  IN EFI_EVENT          Event,\r
  IN VOID               *Context\r
  );\r
\r
/**\r
  Internal helper function which will signal the caller event and clean up\r
  resources.\r
\r
  @param[in] Private   The pointer to the UFS_PASS_THRU_PRIVATE_DATA data\r
                       structure.\r
  @param[in] TransReq  The pointer to the UFS_PASS_THRU_TRANS_REQ data\r
                       structure.\r
\r
**/\r
VOID\r
EFIAPI\r
SignalCallerEvent (\r
  IN UFS_PASS_THRU_PRIVATE_DATA      *Private,\r
  IN UFS_PASS_THRU_TRANS_REQ         *TransReq\r
  );\r
\r
/**\r
  Read or write specified device descriptor of a UFS device.\r
\r
  The function is used to read/write UFS device descriptors. The consumer of this API is\r
  responsible for allocating the data buffer pointed by Descriptor.\r
\r
  @param[in]      This          The pointer to the EFI_UFS_DEVICE_CONFIG_PROTOCOL instance.\r
  @param[in]      Read          The boolean variable to show r/w direction.\r
  @param[in]      DescId        The ID of device descriptor.\r
  @param[in]      Index         The Index of device descriptor.\r
  @param[in]      Selector      The Selector of device descriptor.\r
  @param[in, out] Descriptor    The buffer of device descriptor to be read or written.\r
  @param[in, out] DescSize      The size of device descriptor buffer. On input, the size, in bytes,\r
                                of the data buffer specified by Descriptor. On output, the number\r
                                of bytes that were actually transferred.\r
\r
  @retval EFI_SUCCESS           The device descriptor is read/written successfully.\r
  @retval EFI_INVALID_PARAMETER This is NULL or Descriptor is NULL or DescSize is NULL.\r
                                DescId, Index and Selector are invalid combination to point to a\r
                                type of UFS device descriptor.\r
  @retval EFI_DEVICE_ERROR      The device descriptor is not read/written successfully.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
UfsRwUfsDescriptor (\r
  IN EFI_UFS_DEVICE_CONFIG_PROTOCOL    *This,\r
  IN BOOLEAN                           Read,\r
  IN UINT8                             DescId,\r
  IN UINT8                             Index,\r
  IN UINT8                             Selector,\r
  IN OUT UINT8                         *Descriptor,\r
  IN OUT UINT32                        *DescSize\r
  );\r
\r
/**\r
  Read or write specified flag of a UFS device.\r
\r
  The function is used to read/write UFS flag descriptors. The consumer of this API is responsible\r
  for allocating the buffer pointed by Flag. The buffer size is 1 byte as UFS flag descriptor is\r
  just a single Boolean value that represents a TRUE or FALSE, '0' or '1', ON or OFF type of value.\r
\r
  @param[in]      This          The pointer to the EFI_UFS_DEVICE_CONFIG_PROTOCOL instance.\r
  @param[in]      Read          The boolean variable to show r/w direction.\r
  @param[in]      FlagId        The ID of flag to be read or written.\r
  @param[in, out] Flag          The buffer to set or clear flag.\r
\r
  @retval EFI_SUCCESS           The flag descriptor is set/clear successfully.\r
  @retval EFI_INVALID_PARAMETER This is NULL or Flag is NULL.\r
                                FlagId is an invalid UFS flag ID.\r
  @retval EFI_DEVICE_ERROR      The flag is not set/clear successfully.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
UfsRwUfsFlag (\r
  IN EFI_UFS_DEVICE_CONFIG_PROTOCOL    *This,\r
  IN BOOLEAN                           Read,\r
  IN UINT8                             FlagId,\r
  IN OUT UINT8                         *Flag\r
  );\r
\r
/**\r
  Read or write specified attribute of a UFS device.\r
\r
  The function is used to read/write UFS attributes. The consumer of this API is responsible for\r
  allocating the data buffer pointed by Attribute.\r
\r
  @param[in]      This          The pointer to the EFI_UFS_DEVICE_CONFIG_PROTOCOL instance.\r
  @param[in]      Read          The boolean variable to show r/w direction.\r
  @param[in]      AttrId        The ID of Attribute.\r
  @param[in]      Index         The Index of Attribute.\r
  @param[in]      Selector      The Selector of Attribute.\r
  @param[in, out] Attribute     The buffer of Attribute to be read or written.\r
  @param[in, out] AttrSize      The size of Attribute buffer. On input, the size, in bytes, of the\r
                                data buffer specified by Attribute. On output, the number of bytes\r
                                that were actually transferred.\r
\r
  @retval EFI_SUCCESS           The attribute is read/written successfully.\r
  @retval EFI_INVALID_PARAMETER This is NULL or Attribute is NULL or AttrSize is NULL.\r
                                AttrId, Index and Selector are invalid combination to point to a\r
                                type of UFS attribute.\r
  @retval EFI_DEVICE_ERROR      The attribute is not read/written successfully.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
UfsRwUfsAttribute (\r
  IN EFI_UFS_DEVICE_CONFIG_PROTOCOL    *This,\r
  IN BOOLEAN                           Read,\r
  IN UINT8                             AttrId,\r
  IN UINT8                             Index,\r
  IN UINT8                             Selector,\r
  IN OUT UINT8                         *Attribute,\r
  IN OUT UINT32                        *AttrSize\r
  );\r
\r
/**\r
  Initializes UfsHcInfo field in private data.\r
\r
  @param[in] Private  Pointer to host controller private data.\r
\r
  @retval EFI_SUCCESS  UfsHcInfo initialized successfully.\r
  @retval Others       Failed to initalize UfsHcInfo.\r
**/\r
EFI_STATUS\r
GetUfsHcInfo (\r
  IN UFS_PASS_THRU_PRIVATE_DATA  *Private\r
  );\r
\r
extern EFI_COMPONENT_NAME_PROTOCOL  gUfsPassThruComponentName;\r
extern EFI_COMPONENT_NAME2_PROTOCOL gUfsPassThruComponentName2;\r
extern EFI_DRIVER_BINDING_PROTOCOL  gUfsPassThruDriverBinding;\r
\r
#endif\r